Technical field
[0001]
The present invention relates to the field of communication, and in particular to a method, device and communication system for sending a reference signal.
Background technique
[0002]
In the New Radio (NR) system, it is necessary to support some low-latency and high-reliability business scenarios, such as Augmented Reality (AR)/Virtual Reality (VR), factory automation, including remote driving In the transportation scenarios, distributed power system control, etc. These services have a delay requirement of 0.5ms-1ms and a reliability requirement of 1e-6. Therefore, the fifth-generation mobile communication system (5G) needs to study transmission technologies that combine high reliability and low latency to meet these business scenarios.
[0003]
In order to improve the reliability of transmission, version 15 (Rel-15) has supported repeated transmission of data channels, that is, multiple redundant versions of the same data block (Transport Block, TB) in multiple consecutive time slots (slot) Repeat transmission. In order to continue to maintain the reliability of transmission and further reduce the transmission delay, the time domain resources of multiple repetition transmissions can be adjusted to complete multiple repetitive transmissions in the shortest possible time, for example, in one Send multiple repetitions in a time slot, etc.
[0004]
It should be noted that the above introduction to the technical background is only for the convenience of a clear and complete description of the technical solution of the present invention, and to facilitate the understanding of those skilled in the art. It should not be considered that the above technical solutions are well-known to those skilled in the art just because these solutions are described in the background art part of the present invention.
[0005]
Summary of the invention
[0006]
On the other hand, in order to improve the reliability of transmission, at the 96th meeting (#96) of the Radio Access Network Working Group 1 (RAN1) of the Third Generation Partnership Project (3GPP), three physical uplinks were proposed. Shared channel or signal (PUSCH) transmission method, one of the methods is: network equipment schedules a TB for multiple repetitive transmissions, multiple repetitions can occupy multiple consecutive uplink symbols, without the need for gaps (gap), when When encountering a slot boundary (slot boundary) or a downlink (DL)/uplink (UL) transition point, additional processing is required, that is, a repetition will be split into multiple repetitions, so that each repetition is in a slot Transmission takes place in one UL cycle. Compared with the repeated transmission of Rel-15, the transmission delay of such repeated transmission can be greatly reduced.
[0007]
However, the inventor found that according to the Rel-15 protocol, the transmission of the demodulation reference signal (Demodulation Reference Sgnal, DMRS) is associated with the transmission of the data channel or signal. When a repetition is split into multiple repetitions, whether the DMRS is also There is no solution to the need to split and how to split.
[0008]
In order to solve at least one of the above-mentioned problems or solve other similar problems, embodiments of the present invention provide a method, device, and communication system for sending a reference signal.
[0009]
According to a first aspect of the embodiments of the present invention, there is provided a method for sending a reference signal, which is applied to a sending end, wherein the method includes:
[0010]
The sending end generates one or more signals corresponding to the same transmission block, and the one or more signals include a data channel and a reference signal;
[0011]
The foregoing sending end sends the one or more signals in one or more time domain resource segments, and the position of the reference signal in the one or more signals is determined based on the one or more time domain resource segments.
[0012]
According to a second aspect of the embodiments of the present invention, there is provided a repeated transmission indication method, which is applied to a network device, wherein the method includes:
[0013]
The network device generates downlink control information, where the downlink control information includes an information field, and the information field is used to indicate a repeated transmission mode, or to indicate a repeated transmission mode and a corresponding nominal number of repeated transmissions;
[0014]
The network device sends the downlink control information.
[0015]
According to a third aspect of the embodiments of the present invention, there is provided a reference signal sending device, which is configured at the sending end, wherein the device includes:
[0016]
A generating unit, which generates one or more signals corresponding to the same transmission block, the one or more signals including a data channel and a reference signal;
[0017]
A sending unit that sends the one or more signals in one or more time domain resource segments, and the position of the reference signal in the one or more signals is determined based on the one or more time domain resource segments.
[0018]
According to a fourth aspect of the embodiments of the present invention, there is provided a repeated transmission indication device, which is configured in a network device, wherein the device includes:
[0019]
A generating unit, which generates downlink control information, where the downlink control information includes an information field, and the information field is used to indicate a repeated transmission mode, or to indicate a repeated transmission mode and a corresponding nominal number of repeated transmissions;
[0020]
A sending unit that sends the downlink control information.
[0021]
According to a fifth aspect of the embodiments of the present invention, there is provided a terminal device, wherein the terminal device includes the apparatus described in the foregoing third aspect.
[0022]
According to a sixth aspect of the embodiments of the present invention, there is provided a network device, wherein the network device includes the device described in the foregoing third or fourth aspect.
[0023]
According to a seventh aspect of the embodiments of the present invention, a communication system is provided. The communication system includes the terminal device described in the fifth aspect and the network device described in the sixth aspect.
[0024]
According to other aspects of the embodiments of the present invention, a computer-readable program is provided, wherein when the program is executed in a terminal device, the program causes the computer to execute the method described in the foregoing first aspect in the terminal device .
[0025]
According to other aspects of the embodiments of the present invention, there is provided a storage medium storing a computer readable program, wherein the computer readable program enables a computer to execute the method described in the foregoing first aspect in a terminal device.
[0026]
According to other aspects of the embodiments of the present invention, a computer-readable program is provided, wherein when the program is executed in a network device, the program causes a computer to execute the aforementioned first aspect or second aspect in the network device The method described.
[0027]
According to other aspects of the embodiments of the present invention, there is provided a storage medium storing a computer-readable program, wherein the computer-readable program enables a computer to execute the method described in the first aspect or the second aspect in a network device.
[0028]
The beneficial effect of the embodiments of the present invention is that according to at least one aspect of the embodiments of the present invention, both the network device and the terminal device can have a consistent understanding of the transmission of the reference signal, which improves the reliability of the transmission of the reference signal.
[0029]
With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the ways in which the principles of the present invention can be adopted. It should be understood that the scope of the embodiments of the present invention is not limited thereby. Within the spirit and scope of the terms of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents.
[0030]
Features described and/or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or substituted for features in other embodiments .
[0031]
It should be emphasized that the term "comprising/comprising" when used herein refers to the existence of a feature, a whole, a step or a component, but does not exclude the existence or addition of one or more other features, a whole, a step or a component.
Description of the drawings
[0032]
The elements and features described in one drawing or one embodiment of the embodiment of the present invention may be combined with the elements and features shown in one or more other drawings or embodiments. In addition, in the drawings, similar reference numerals indicate corresponding parts in several drawings, and may be used to indicate corresponding parts used in more than one embodiment.
[0033]
The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principle of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor. In the attached picture:
[0034]
Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present invention;
[0035]
Figure 2 is a schematic diagram of three examples of PUSCH repetition;
[0036]
Figure 3 is a schematic diagram of the position of a repetition reference signal;
[0037]
4 is a schematic diagram of the reference signal transmission method of Embodiment 1;
[0038]
FIG. 5 is a schematic diagram of a method for configuring the number of repeated transmissions in Embodiment 2;
[0039]
6 is a schematic diagram of the repeated transmission indication method of Embodiment 3;
[0040]
FIG. 7 is a schematic diagram of the reference signal sending device of Embodiment 4;
[0041]
FIG. 8 is another schematic diagram of the reference signal sending device of Embodiment 4;
[0042]
FIG. 9 is a schematic diagram of a device for configuring the number of repeated transmissions according to Embodiment 5;
[0043]
10 is a schematic diagram of a repeated transmission indicating device of Embodiment 6;
[0044]
FIG. 11 is a schematic diagram of a terminal device of Embodiment 7;
[0045]
FIG. 12 is a schematic diagram of a network device of Embodiment 8.
Detailed ways
[0046]
With reference to the drawings, the foregoing and other features of the present invention will become apparent through the following description. In the description and drawings, specific embodiments of the present invention are specifically disclosed, which indicate some embodiments in which the principles of the present invention can be adopted. It should be understood that the present invention is not limited to the described embodiments. On the contrary, the present invention is not limited to the described embodiments. The invention includes all modifications, variations and equivalents falling within the scope of the appended claims.
[0047]
In the embodiments of the present invention, the terms "first", "second", etc. are used to distinguish different elements from the terms, but they do not indicate the spatial arrangement or chronological order of these elements. These elements should not be used by these terms. Limited. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having" and the like refer to the existence of the stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.
[0048]
In the embodiments of the present invention, the singular forms "a", "the", etc. include plural forms, which should be broadly understood as "a" or "a type" rather than being limited to the meaning of "a"; in addition, the term "so" "Said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "based on" should be understood as "based at least in part on...", and the term "based on" should be understood as "based at least in part on..." unless the context clearly dictates otherwise.
[0049]
In the embodiment of the present invention, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), and Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed ​​Packet Access (HSPA, High-Speed ​​Packet Access), etc.
[0050]
Moreover, the communication between devices in the communication system can be carried out according to any stage of communication protocol, for example, it can include but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and future 5G, New Radio (NR, New Radio), etc., and/or other communication protocols currently known or to be developed in the future.
[0051]
In the embodiment of the present invention, the term “network device” refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device. Network equipment may include but is not limited to the following equipment: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobile management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller), etc.
[0052]
Among them, the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), 5G base station (gNB), etc., and may also include remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay) or low-power node (such as femto, pico, etc.). And the term "base station" can include some or all of their functions, and each base station can provide communication coverage for a specific geographic area. The term "cell" may refer to a base station and/or its coverage area, depending on the context in which the term is used.
[0053]
In the embodiment of the present invention, the term "User Equipment" (UE, User Equipment) refers to, for example, a device that accesses a communication network through a network device and receives network services, and may also be referred to as "Terminal Equipment" (TE, Terminal Equipment). The terminal device can be fixed or mobile, and can also be called a mobile station (MS, Mobile Station), terminal, user, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, etc. Wait.
[0054]
Among them, terminal devices may include but are not limited to the following devices: cellular phones (Cellular Phone), personal digital assistants (PDAs, Personal Digital Assistant), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, Cordless phones, smart phones, smart watches, digital cameras, etc.
[0055]
For another example, in scenarios such as the Internet of Things (IoT, Internet of Things), the terminal device can also be a machine or device that performs monitoring or measurement. For example, it can include but is not limited to: Machine Type Communication (MTC) terminals, Vehicle-mounted communication terminals, device to device (D2D, Device to Device) terminals, machine to machine (M2M, Machine to Machine) terminals, etc.
[0056]
The following describes the scenario of the embodiment of the present invention through an example, but the embodiment of the present invention is not limited to this.
[0057]
FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention, which schematically illustrates a case where a terminal device and a network device are taken as an example. As shown in FIG. 1, the communication system 100 may include: a network device 101 and a terminal device 102. For simplicity, Figure 1 only uses one terminal device as an example for illustration. The network device 101 is, for example, the network device gNB in ​​the NR system.
[0058]
In the embodiment of the present invention, existing services or services that can be implemented in the future can be performed between the network device 101 and the terminal device 102. For example, these services include but are not limited to: enhanced mobile broadband (eMBB, enhanced Mobile Broadband), massive machine type communication (mMTC, massive machine type communication), and highly reliable and low-latency communication (URLLC, Ultra-Reliable and Low- Latency Communication), etc.
[0059]
In the embodiment of the present invention, the terminal device 102 may send data to the network device 101, for example, using an authorization-free transmission mode. The network device 101 can receive data sent by one or more terminal devices 102, and feedback information to the terminal device 102, such as acknowledgement (ACK) information or non-acknowledgement (NACK) information, and the terminal device 102 can confirm the end of the transmission process according to the feedback information, Alternatively, new data transmission can be performed, or data retransmission can be performed.
[0060]
For the convenience of description, some concepts involved in the embodiments of the present invention will be described below.
[0061]
In the embodiment of the present invention, there are two types of DMRS, namely front-loaded DMRS (front-loaded DMRS) and additional DMRS (additional DMRS). The front-loaded DMRS always exists, that is, it will always be transmitted, and whether the additional DMRS exists and whether The location depends on the high-level signaling configuration and protocol provisions.
[0062]
In the embodiment of the present invention, there are two types of PUSCH transmission, PUSCH mapping type A (referred to as type A PUSCH) and PUSCH mapping type B (referred to as type B PUSCH). The DMRS transmission formats corresponding to these two transmission types are different. of. For type A PUSCH, front-loaded DMRS always appears on the third or fourth symbol of the slot, such as symbol 2 or symbol 3, starting with symbol 0. For type B PUSCH, the front-loaded DMRS is always on the first symbol of the scheduled PUSCH.
[0063]
In the embodiment of the present invention, the uplink transmission grant (UL grant) of the PUSCH may be in the form of DCI or a scheduling grant configured by RRC signaling, which may include the time domain resource assignment of the first repetition (Time Domain Resource Assignment). , TDRA), the time domain resources of other repetitions can be further determined according to the TDRA of the first repetition and the uplink and downlink transmission direction of the symbol.
[0064]
Figure 2 is a schematic diagram of three examples of PUSCH repetition split. In Figure 2(a), the network device indicates that each repetition occupies 4 symbols, a total of 2 repetitions; in Figure 2(b), the network device Indicates that each repetition occupies 4 symbols, a total of 4 repetitions; in Figure 2 (c), the network device indicates that each repetition occupies 14 symbols, a total of 1 repetition, and, in the example of Figure 2 (c) , S+L>14 is required, S is the starting position of the symbol, and L is the duration of the symbol. For its definition, you can refer to existing standards.
[0065]
It can be seen from Figure 2 that although it is said to be split, the transmitted TB needs to be transmitted in one repetition. Take (b) in Figure 2 as an example, one repetition occupies 4 symbols, a total of 4 repetitions, but, At the slot boundary, the PUSCH needs to be transmitted in the previous slot, and the repetition is transmitted again in the next slot, which results in 5 repetitions, and the 3rd repetition and the 4th repetition occupy 2 symbols respectively. However, if the repetition before the slot boundary contains DMRS, how to classify the repetition and whether the DMRS in it also needs to be split is not specified in the current plan.
[0066]
Take the repetition shown in Figure 3 as an example. If the repetition occupies 7 symbols, and the first symbol is used to transmit front-loaded DMRS, the fifth symbol is used to transmit additional DMRS, and the other symbols are used to transmit data channels or signals. For example, PDSCH or PUSCH, if there are only 4 symbols left in the current slot, which symbol or symbols are used to transmit DMRS need to be specified so that network equipment and terminal equipment have a consistent understanding. For example, one possibility is 4 There are still 2 symbols in the symbols used for DMRS transmission, another possibility is that only 1 symbol in the 4 symbols is used for DMRS transmission, and so on. Note that part of the REs of the symbol where the DMRS is located may also be used for data channel or signal transmission.
[0067]
In this embodiment, the reference signal is a DMRS and the data channel or signal is an uplink data channel or signal (such as PUSCH) as an example. However, this embodiment does not limit this. In this embodiment, the reference signal may also be other and The reference signal associated with the data channel or signal. The data channel or signal may also be a downlink data channel or signal, such as PDSCH.
[0068]
Various embodiments of the present invention will be described below with reference to the accompanying drawings. These embodiments are only exemplary, and are not limitations to the present invention.
[0069]
Example 1
[0070]
This embodiment provides a method for sending a reference signal. The method is applied to the sending end and may be a terminal device or a network device. FIG. 4 is a schematic diagram of the reference signal sending method of this embodiment. Please refer to FIG. 4. The method includes:
[0071]
Step 401: The sending end generates one or more signals corresponding to the same transmission block, and the one or more signals include a data channel and a reference signal;
[0072]
Step 402: The sending end sends the one or more signals in one or more time domain resource segments, and the position of the reference signal is determined based on the one or more time domain resource segments.
[0073]
In this embodiment, the sender determines the position of the reference signal according to the actual repetition (one or more signals sent above) occupied by the time domain resource segment, not only according to the network device configuration or the number of repeated transmissions and instructions. The reference signal type is used to determine the position of the reference signal, so that the network device and the terminal device have a consistent understanding of the transmission of the reference signal, thereby improving the reliability of the reference signal transmission. The number of repeated transmissions of network device configuration or instructions will be described later.
[0074]
In this embodiment, among the above-mentioned one or more signals, one or some signals may include both data channels and reference signals, or one or some signals may only include data channels and not reference signals, This embodiment takes as an example that each of the one or more signals includes a data channel and a reference signal, but this embodiment is not limited to this.
[0075]
In an embodiment, the above-mentioned one or more signals may include a first signal and a second signal, and the first signal and the second signal correspond to the same transmission block, for example, two repetitions of a transmission block, and , The first signal and the second signal respectively include a data channel and a reference signal, the transmitting end may send the first signal in the first time domain resource segment, and send the second signal in the second time domain resource segment, in the first signal The location of the reference signal may be determined based on the first time domain resource segment, and the location of the reference signal in the second signal may be determined based on the second time domain resource segment.
[0076]
In another embodiment, the one or more signals may include the first signal, the second signal, and the third signal. The third signal also corresponds to the transmission block, that is, the first signal, the second signal, and the second signal. The signal and the third signal are the repetition of the above-mentioned transmission block. The third signal may also include a data signal and a reference signal. The transmitting end may send the third signal in the third time domain resource segment. The position of the reference signal in the third signal It may be determined based on the third time domain resource segment.
[0077]
In this embodiment, there may be one or more than one third time domain resource segments, and correspondingly, there are one or more third signals.
[0078]
In this embodiment, the number of repeated transmissions of the transmission block, that is, the number of repetitions, is not configured or instructed by the network device, but actually occurs. Each time the position of the reference signal in the repetition is occupied by the repetition. The domain resource segment is determined, thereby avoiding the inconsistent understanding of the transmission of the reference signal by the network equipment and the terminal equipment, and improving the reliability of the transmission of the reference signal.
[0079]
In this embodiment, the position of the reference signal may be determined based on at least one of the following:
[0080]
The symbol length of the time domain resource segment;
[0081]
TDRA configuration or indication of the time domain resource segment;
[0082]
High-level signaling configuration; and
[0083]
The agreement stipulates.
[0084]
For example, the position of the reference signal may be determined based on the symbol length of the time domain resource segment. For example, the sending end may determine the time domain resource segment occupied by each repetition according to the TDRA indicated in the UL grant, and then determine the position of the reference signal according to the symbol length of the time domain resource segment of each repetition. Here, “position” refers to the position of the symbol occupied by the above-mentioned reference signal, and therefore implicitly includes the number of reference signals. In this embodiment, unless otherwise specified, the same expression has the same meaning. The foregoing UL grant may be configured by DCI signaling or RRC signaling. This embodiment is not limited to this, and it may also be a separate signaling or parameter or indication.
[0085]
Assuming that the number of repetitions actually transmitted is N, the symbol length of the time domain resource segment of each repetition is K1, K2, ..., KN. Therefore, a table of DMRS locations can be defined in the protocol, and the DMRS location can be determined according to the symbol length (K1, K2,..., KN) of the time domain resource segment. Or, you can follow the table 6.4.1.1.3-3 in the current protocol TS38.211, replace l d in the table with the symbol length of the time domain resource segment (K1, K2,..., KN), or replace l d Interpreted as the length of the time domain resource segment (K1, K2,..., KN), that is, l d is the symbol length of the time domain resource segment (K1, K2,..., KN). Table 6.4.1.1.3-3 in the current protocol TS38.211 is as follows.
0087]
For another example, the location of the reference signal may be determined based on the TDRA configuration or indication of the time domain resource segment. For example, if the TDRA configuration in the UL grant or the indication S+L≤14, in addition to the first type of reference signal, each repetition (the above signal) can also contain the second type of reference signal; if S+L>14, every repetition Each repetition (the above-mentioned signal) contains only the first type of reference signal. S is the symbol start position of the time domain resource segment, and L is the indicated symbol length of the time domain resource segment. Here, the first type of reference signal is, for example, the aforementioned front-loaded DMRS, and the second type of reference signal is, for example, the aforementioned additional MDRS, but this embodiment is not limited to this. In the following description, unless otherwise specified, the same expressions have the same meaning , Do not repeat the description.
[0088]
For another example, the position of the reference signal may be jointly determined based on the actual symbol length of the time domain resource segment and the symbol length of the time domain resource segment configured or indicated by TDRA. For example, if the actual symbol length of the time domain resource segment (such as the actual number of available uplink symbols) is K, and the symbol length of the time domain resource segment configured or indicated by TDRA is L, if L>K, it can be based on the actual The length (K) of the time domain resource segment determines the position of the reference signal. For example, L=7, the reference signal is DMRS, and its position is shown in Figure 3 as an example. When K=4, the number of DMRS symbols can be Reduce from 2 to 1; when K=5, the number of DMRS symbols can be set to 2; if L=K, the DMRS can be determined according to the length (L) of the time domain resource segment configured or indicated above s position. In addition, in the protocol, a DMRS location table can also be defined to query the DMRS location based on the actual symbol length (K) of the time domain resource segment and the symbol length (L) of the time domain resource segment configured or indicated by TDRA.
[0089]
For another example, the sender can determine the position of the reference signal according to the protocol. Taking the sending end as a terminal device as an example, when the network device configures the terminal device to perform repeated transmissions, the terminal device can determine the location of the reference signal according to the agreement, that is, the terminal device expects that the network device will not be configured with the second type of reference signal, that is The position of the second type of reference signal is always'pos0'. Still taking the sending end as the terminal device as an example, when the network device is configured with the terminal device for repeated transmission, if the network device is configured with one or more second type reference signals, the terminal device determines the position of the reference signal according to the agreement, that is, its It will be executed as if the network device is not equipped with the second type of reference signal.
[0090]
The above embodiment is applicable to the scenario where the data channel in the above signal is configured as the second type, and the network device is configured with the second type of reference signal, but this embodiment is not limited to this, the above embodiment can also be used in the above signal The data channel is configured as the first type, or the network device is not configured with the second type of reference signal, and only the first type of reference signal is configured. For example, the data channel is configured as the first type, and the network device is configured with the first type reference signal and/or the second type reference signal; for another example, the data channel is configured as the second type, and the network device is configured with the first type reference signal. Signal and/or type 2 reference signal. Here, the first type is, for example, the aforementioned type A, and the second type is, for example, the aforementioned type B, but this embodiment is not limited to this. In the following description, unless otherwise specified, the same expressions have the same meaning and will not be repeated. illustrate.
[0091]
In an implementation of this embodiment, if the network device is configured with a second type of reference signal, for example, the network device is configured with one or more first type reference signals and one or more second type reference signals, and the above signals If the data channel in the above-mentioned signal is configured as the first type, the position of the reference signal in the above-mentioned signal can be determined according to the situation that the data channel is configured as the second type and the network device is not configured with the second type of reference signal, or it can be determined according to the data channel. It can be determined based on the configuration of the second type and the network device is configured with the second type of reference signal. It can also be determined according to the fixed time domain position. It can also be determined according to the situation that the data channel is configured to the first type in R15 and the data channel is configured. It is determined when the configuration is the second type and the network device is configured with the second type of reference signal.
[0092]
For example, because the data channel is configured as the second type and the network device is not configured with the second type of reference signal, the first type of reference signal is always on the first symbol of the time domain resource occupied by the scheduled data channel, Then, if the network device is configured with the second type of reference signal, and the data channel in the above signal is configured as the first type, the position of the reference signal in the above signal can be the first symbol of the corresponding time domain resource segment, that is, every The first symbol of each time domain resource segment is used for reference signal transmission.
[0093]
For another example, since the data channel is configured as the second type and the network device is configured with the second type of reference signal, the position of the reference signal in the signal may be determined according to at least one of the following: the symbol of the corresponding time domain resource segment Length, corresponding time-domain resource allocation configuration or indication of the time-domain resource segment, high-level signaling configuration, and protocol regulations. Then, if the network device is configured with the second type of reference signal, and the data channel in the above signal is configured as the first type, the position of the reference signal in the above signal may also be determined according to the foregoing at least one item.
[0094]
For another example, if the network device is configured with the second type of reference signal, and the data channel in the above signal is configured as the first type, the position of the reference signal in the above signal may be a fixed time domain position, such as the corresponding time domain resource The first symbol of the segment, or the second symbol of the corresponding time domain resource segment, or the position of the reference signal corresponding to the above-mentioned first type.
[0095]
For another example, if the network device is configured with the second type of reference signal, and the data channel in the above signal is configured as the first type, the position of the reference signal in the above signal can be configured as the first type according to the data channel in R15. And the data channel is configured as the second type and the network device is configured with the second type of reference signal. For example, the position of the reference signal in the signal is determined according to the situation that the data channel is configured as the first type in R15, if One or more time domain resource segments do not contain reference signal symbols, then the reference signal position in the signal corresponding to the time domain resource segment may be the first symbol of the corresponding time domain resource segment, or the corresponding time domain resource segment The second symbol of the domain resource segment.
[0096]
In another implementation manner of this embodiment, if the network device is only configured with the first type reference signal, for example, the network device is configured with one or more first type reference signals, the position of the reference signal in the above signal may be fixed. The time domain position of is, for example: the first symbol of the corresponding time domain resource segment, or the second symbol of the corresponding time domain resource segment, or the first symbol and the second symbol of the corresponding resource resource segment. In this embodiment, the data channel in the above signal can be configured as the first type or the second type, that is, regardless of whether the data channel in the above signal is configured as the first type or the second type, if the network device Only the first type of reference signal is configured, and the position of the reference signal in the above-mentioned signal may be the above-mentioned fixed time-domain position.
[0097]
In this embodiment, if the network device is only configured with the first type of reference signal, according to the existing standard, one or some repetitions (such as the second repetition) do not have a reference signal. If frequency domain frequency modulation is performed, it will cause the There is no reference signal available for repetition. According to the method of this embodiment, the reference signal is sent at a fixed time domain position (the first symbol and/or the second symbol) of the corresponding time domain resource segment, which solves this problem.
[0098]
For example, even if TDRA configures or indicates that the data channel is of the first type, the second and subsequent actual repetitions can be treated as R15 type B, that is, in the first one of the time domain resource segment occupied by each repetition The symbol sends a reference signal. Alternatively, one or more repetitions can be treated as R15 type B, that is, the reference signal is sent on the first symbol of the time domain resource segment occupied by each repetition.
[0099]
In this example, when using C-RNTI, CS-RNTI or MCS-C-RNTI scrambled DCI format, or a new DCI format (such as DCI format 0-2, 1-2, etc.), or high-level signaling When configuring a terminal device to perform R16PUSCH repetition, even if the TDRA field in the UL grant or the PUSCH configured by RRC TDRA indicates the type of PUSCH is type A, the terminal device expects all time domain resource segments occupied by the repetition, or except for the first repetition. The time domain resource section other than the time domain resource section adopts the R15 type B reference signal transmission mode. Therefore, when supporting PUSCH repetition and other services, a PUSCH TDRA table or the same PUSCH TDRA configuration is used, and RRC reconfiguration is not required when supporting URLLC services.
[0100]
All the above embodiments are applicable to all DMRS configurations. For example, the data channel is configured as the first type, and the network device is configured with the first type reference signal and/or the second type reference signal; for another example, the data channel is configured For the second type, the network device is configured with the first type of reference signal and/or the second type of reference signal.
[0101]
In this embodiment, as described above, the network device may also configure or instruct repeated transmission of data channels or transmission blocks, for example, repeated transmission at the slot level in R15, or repeated transmission with low latency in R16.
[0102]
In this embodiment, for the network device, it can send a command to the terminal device, through which the command configures or instructs the data channel or transmission block to repeat transmission; for the terminal device, it can receive the command and determine the network device configuration according to the command Or indicated repeated transmission.
[0103]
In this embodiment, the network device can configure or instruct the repeated transmission of the above-mentioned data channel or transport block only through RRC signaling, or it can configure or instruct the above-mentioned data channel or transmission through a combination of RRC signaling and DCI signaling. The repeated transmission of blocks will be described separately below. In this embodiment, for the convenience of description, the repeated transmission of a data channel or a transmission block is simply referred to as repeated transmission.
[0104]
In one embodiment, the network device configures or instructs the repeated transmission only through high-layer signaling (the above-mentioned RRC signaling), and the high-layer signaling includes a first parameter indicating the above-mentioned repeated transmission, or the first parameter Indicates the above repeated transmission and the number of repeated transmissions.
[0105]
For example, a parameter used to indicate repeated transmission (referred to as the first parameter for short), such as pusch-AggregationFactor-r16, can be added to the RRC signaling to notify the terminal device to perform the aforementioned low-latency and high-reliability repeated transmission, namely , One UL grant schedules two or more repeated transmissions of one TB, and these two or more repeated transmissions can be in one slot, or can be in multiple In consecutive time slots. In addition, this parameter can also be used to notify the number of subsequent repetitions, such as 1, 2, 4, 6, 8, and so on. The number of repetitions is only a nominal number of transmissions. In actual transmission, one repetitive transmission may encounter a time slot boundary or an uplink/downlink (DL/UL) switching point and be split into multiple repetitive transmissions.
[0106]
The format of the above-mentioned first parameter may be, for example:
[0107]
pdsch-AggregationFactor-r16ENUMERATED{nA,nB,nC…}OPTIONAL
[0108]
Among them, nA, nB, and nC represent the number of repetitions, and the value is a natural number, and the number of configured repetitions is also a natural number. When pdsch-AggregationFactor-r16 is not configured, it means that the network device does not configure terminal equipment for low-latency and high-reliability repeated transmission, or the number of repeated transmissions is 1, or that the network side will not dynamically indicate through DCI signaling. The number of repeated transmissions.
[0109]
In another embodiment, the network device configures or instructs the repeated transmission only through high-layer signaling (the above-mentioned RRC signaling), and the high-layer signaling includes a second parameter that is used to enable or disable the dynamic nominal repeated transmission "Number of times", "Dynamic nominal repetitive transmission times" ON means that the network device will dynamically indicate the number of nominal repetitive transmissions through a certain domain in the DCI signaling, "Dynamic nominal repetitive transmission times" off means that there is no indication name in the DCI of the network device Relevant signaling field for the number of repeated transmissions. When the "number of dynamic nominal repeated transmissions" is turned on by the second parameter, the above repeated transmission is also turned on accordingly, and when the "number of dynamic nominal repeated transmissions" is turned off by the second parameter, the above repeated transmission is turned off accordingly.
[0110]
In this embodiment, it is also possible to increase the condition that the repeated transmission is turned on or off. For example, when the above-mentioned "number of dynamic nominal repeated transmissions" is turned on by the second parameter, and the number of dynamic nominal repeated transmissions is greater than or equal to the first value, The above repeated transmission is turned on, when the above “dynamic nominal repeated transmission times” is turned off by the second parameter, or the dynamic nominal repeated transmission times is turned on by the second parameter, but the dynamic nominal repeated transmission times are less than or equal to the second value, the above repeat The transmission is closed.
[0111]
In this embodiment, the above-mentioned “number of dynamic nominal repeated transmissions” can be indicated by DCI signaling, and the opening or closing of the domain is realized through the above-mentioned second parameter.
[0112]
For example, when the indication of the number of dynamic nominal repeated transmissions is configured as enabled by the above second parameter, the repeated transmission is also enabled at the same time; conversely, when the indication of the number of dynamic nominal repeated transmissions is configured as disabled by the second parameter above , Repeat transmission is also closed at the same time.
[0113]
For another example, when the indication of the number of dynamic nominal repeated transmissions is configured as enabled by the above second parameter, and the candidate nominal repeated transmission times is greater than or equal to the first value (for example, 0, 1, 2, etc.), the repeated transmission is also It is enabled at the same time; conversely, when the indication of the number of dynamic nominal repeated transmissions is configured as disabled by the above second parameter, or when the second parameter is configured as enabled and the candidate number of nominal repeated transmissions is less than or equal to the second value (For example, 0, 1, 2, etc.), repeated transmission is also closed at the same time.
[0114]
In this embodiment, it is also possible to determine whether to configure or indicate the above-mentioned repeated transmission through whether the time domain resource allocation configured by high-level signaling includes the number of repeated transmissions. For example, the time domain resource allocation related parameter is'PUSCH-TimeDomainResourceAllocation-16', If the parameter contains the number of repeated transmissions parameter, it means that the repeated transmission is configured, otherwise it means that the repeated transmission is not configured.
[0115]
In another embodiment, the network device configures or instructs the foregoing repeated transmission through high-level signaling and downlink control information, the high-level signaling includes a third parameter, the third parameter configures or indicates the foregoing repeated transmission, and the downlink control information includes Indication field, the indication field indicates whether to enable the above repeated transmission.
[0116]
In this embodiment, the above indication field may be any one or any combination of the following, that is, the indication field includes at least one of the following:
[0117]
DCI field used to indicate the number of nominal repeated transmissions;
[0118]
DCI field used to indicate time domain resource allocation;
[0119]
Information field used to indicate the method of repeated transmission and/or the number of nominal repeated transmissions; and
[0120]
An information field used to indicate the number of nominal repeated transmissions and/or time domain resource allocation methods.
[0121]
For the aforementioned DCI field used to indicate the number of nominal repeated transmissions, for example, it may be a separate DCI field, which is only used to transmit the nominal number of transmissions. When the above-mentioned high-level signaling indicates that the DCI field is turned on, and the DCI field indicates that the number of repeated transmissions is greater than or equal to a certain value (for example, 0, 1, 2, etc.), the terminal device is instructed to perform repeated transmission. The individual DCI field can be 1 bit or 2 bits, and the nominal number of transmissions can be a value configured by high-layer signaling. The high-layer signaling can be RRC signaling, or RRC signaling and MAC-CE signaling. , That is, RRC signaling is configured with one or more candidate values ​​for the number of repeated transmissions, and MAC-CE signaling selects one or more values ​​from them.
[0122]
For the aforementioned DCI field used to indicate time domain resource allocation, for example, when the DCI field indicates S+L>14, it means that the terminal device is notified to perform repeated transmission.
[0123]
For the above information field used to indicate the repeated transmission mode and/or the nominal number of repeated transmissions. For example, R15 supports slot-level repetitive transmission, and R16 contains low-latency and high-reliability repetitive transmission (referred to as R16 repetitive transmission). In this embodiment, an information field is used to represent the dynamic switching and repetition of R15 and R16. / Or an indication of the number of repetitions.
[0124]
In this embodiment, an information field of 1 bit or 2 bits or 3 bits or other bit values ​​can be used to indicate the repeated transmission mode and/or the number of nominal repeated transmissions. For example, different bit values ​​of the information field indicate different repetitions. Transmission method, or indicates different repeated transmission methods and the number of repeated transmissions.
[0125]
For example, the information field can be 2 bits, and different bit values ​​are used to indicate different repetitive transmission modes and/or nominal repetitive transmission times, as shown in Table 1 below:
0087]
For another example, the location of the reference signal may be determined based on the TDRA configuration or indication of the time domain resource segment. For example, if the TDRA configuration in the UL grant or the indication S+L≤14, in addition to the first type of reference signal, each repetition (the above signal) can also contain the second type of reference signal; if S+L>14, every repetition Each repetition (the above-mentioned signal) contains only the first type of reference signal. S is the symbol start position of the time domain resource segment, and L is the indicated symbol length of the time domain resource segment. Here, the first type of reference signal is, for example, the aforementioned front-loaded DMRS, and the second type of reference signal is, for example, the aforementioned additional MDRS, but this embodiment is not limited to this. In the following description, unless otherwise specified, the same expressions have the same meaning , Do not repeat the description.
[0088]
For another example, the position of the reference signal may be jointly determined based on the actual symbol length of the time domain resource segment and the symbol length of the time domain resource segment configured or indicated by TDRA. For example, if the actual symbol length of the time domain resource segment (such as the actual number of available uplink symbols) is K, and the symbol length of the time domain resource segment configured or indicated by TDRA is L, if L>K, it can be based on the actual The length (K) of the time domain resource segment determines the position of the reference signal. For example, L=7, the reference signal is DMRS, and its position is shown in Figure 3 as an example. When K=4, the number of DMRS symbols can be Reduce from 2 to 1; when K=5, the number of DMRS symbols can be set to 2; if L=K, the DMRS can be determined according to the length (L) of the time domain resource segment configured or indicated above s position. In addition, in the protocol, a DMRS location table can also be defined to query the DMRS location based on the actual symbol length (K) of the time domain resource segment and the symbol length (L) of the time domain resource segment configured or indicated by TDRA.
[0089]
For another example, the sender can determine the position of the reference signal according to the protocol. Taking the sending end as a terminal device as an example, when the network device configures the terminal device to perform repeated transmissions, the terminal device can determine the location of the reference signal according to the agreement, that is, the terminal device expects that the network device will not be configured with the second type of reference signal, that is The position of the second type of reference signal is always'pos0'. Still taking the sending end as the terminal device as an example, when the network device is configured with the terminal device for repeated transmission, if the network device is configured with one or more second type reference signals, the terminal device determines the position of the reference signal according to the agreement, that is, its It will be executed as if the network device is not equipped with the second type of reference signal.
[0090]
The above embodiment is applicable to the scenario where the data channel in the above signal is configured as the second type, and the network device is configured with the second type of reference signal, but this embodiment is not limited to this, the above embodiment can also be used in the above signal The data channel is configured as the first type, or the network device is not configured with the second type of reference signal, and only the first type of reference signal is configured. For example, the data channel is configured as the first type, and the network device is configured with the first type reference signal and/or the second type reference signal; for another example, the data channel is configured as the second type, and the network device is configured with the first type reference signal. Signal and/or type 2 reference signal. Here, the first type is, for example, the aforementioned type A, and the second type is, for example, the aforementioned type B, but this embodiment is not limited to this. In the following description, unless otherwise specified, the same expressions have the same meaning and will not be repeated. illustrate.
[0091]
In an implementation of this embodiment, if the network device is configured with a second type of reference signal, for example, the network device is configured with one or more first type reference signals and one or more second type reference signals, and the above signals If the data channel in the above-mentioned signal is configured as the first type, the position of the reference signal in the above-mentioned signal can be determined according to the situation that the data channel is configured as the second type and the network device is not configured with the second type of reference signal, or it can be determined according to the data channel. It can be determined based on the configuration of the second type and the network device is configured with the second type of reference signal. It can also be determined according to the fixed time domain position. It can also be determined according to the situation that the data channel is configured to the first type in R15 and the data channel is configured. It is determined when the configuration is the second type and the network device is configured with the second type of reference signal.
[0092]
For example, because the data channel is configured as the second type and the network device is not configured with the second type of reference signal, the first type of reference signal is always on the first symbol of the time domain resource occupied by the scheduled data channel, Then, if the network device is configured with the second type of reference signal, and the data channel in the above signal is configured as the first type, the position of the reference signal in the above signal can be the first symbol of the corresponding time domain resource segment, that is, every The first symbol of each time domain resource segment is used for reference signal transmission.
[0093]
For another example, since the data channel is configured as the second type and the network device is configured with the second type of reference signal, the position of the reference signal in the signal may be determined according to at least one of the following: the symbol of the corresponding time domain resource segment Length, corresponding time-domain resource allocation configuration or indication of the time-domain resource segment, high-level signaling configuration, and protocol regulations. Then, if the network device is configured with the second type of reference signal, and the data channel in the above signal is configured as the first type, the position of the reference signal in the above signal may also be determined according to the foregoing at least one item.
[0094]
For another example, if the network device is configured with the second type of reference signal, and the data channel in the above signal is configured as the first type, the position of the reference signal in the above signal may be a fixed time domain position, such as the corresponding time domain resource The first symbol of the segment, or the second symbol of the corresponding time domain resource segment, or the position of the reference signal corresponding to the above-mentioned first type.
[0095]
For another example, if the network device is configured with the second type of reference signal, and the data channel in the above signal is configured as the first type, the position of the reference signal in the above signal can be configured as the first type according to the data channel in R15. And the data channel is configured as the second type and the network device is configured with the second type of reference signal. For example, the position of the reference signal in the signal is determined according to the situation that the data channel is configured as the first type in R15, if One or more time domain resource segments do not contain reference signal symbols, then the reference signal position in the signal corresponding to the time domain resource segment may be the first symbol of the corresponding time domain resource segment, or the corresponding time domain resource segment The second symbol of the domain resource segment.
[0096]
In another implementation manner of this embodiment, if the network device is only configured with the first type reference signal, for example, the network device is configured with one or more first type reference signals, the position of the reference signal in the above signal may be fixed. The time domain position of is, for example: the first symbol of the corresponding time domain resource segment, or the second symbol of the corresponding time domain resource segment, or the first symbol and the second symbol of the corresponding resource resource segment. In this embodiment, the data channel in the above signal can be configured as the first type or the second type, that is, regardless of whether the data channel in the above signal is configured as the first type or the second type, if the network device Only the first type of reference signal is configured, and the position of the reference signal in the above-mentioned signal may be the above-mentioned fixed time-domain position.
[0097]
In this embodiment, if the network device is only configured with the first type of reference signal, according to the existing standard, one or some repetitions (such as the second repetition) do not have a reference signal. If frequency domain frequency modulation is performed, it will cause the There is no reference signal available for repetition. According to the method of this embodiment, the reference signal is sent at a fixed time domain position (the first symbol and/or the second symbol) of the corresponding time domain resource segment, which solves this problem.
[0098]
For example, even if TDRA configures or indicates that the data channel is of the first type, the second and subsequent actual repetitions can be treated as R15 type B, that is, in the first one of the time domain resource segment occupied by each repetition The symbol sends a reference signal. Alternatively, one or more repetitions can be treated as R15 type B, that is, the reference signal is sent on the first symbol of the time domain resource segment occupied by each repetition.
[0099]
In this example, when using C-RNTI, CS-RNTI or MCS-C-RNTI scrambled DCI format, or a new DCI format (such as DCI format 0-2, 1-2, etc.), or high-level signaling When configuring a terminal device to perform R16PUSCH repetition, even if the TDRA field in the UL grant or the PUSCH configured by RRC TDRA indicates the type of PUSCH is type A, the terminal device expects all time domain resource segments occupied by the repetition, or except for the first repetition. The time domain resource section other than the time domain resource section adopts the R15 type B reference signal transmission mode. Therefore, when supporting PUSCH repetition and other services, a PUSCH TDRA table or the same PUSCH TDRA configuration is used, and RRC reconfiguration is not required when supporting URLLC services.
[0100]
All the above embodiments are applicable to all DMRS configurations. For example, the data channel is configured as the first type, and the network device is configured with the first type reference signal and/or the second type reference signal; for another example, the data channel is configured For the second type, the network device is configured with the first type of reference signal and/or the second type of reference signal.
[0101]
In this embodiment, as described above, the network device may also configure or instruct repeated transmission of data channels or transmission blocks, for example, repeated transmission at the slot level in R15, or repeated transmission with low latency in R16.
[0102]
In this embodiment, for the network device, it can send a command to the terminal device, through which the command configures or instructs the data channel or transmission block to repeat transmission; for the terminal device, it can receive the command and determine the network device configuration according to the command Or indicated repeated transmission.
[0103]
In this embodiment, the network device can configure or instruct the repeated transmission of the above-mentioned data channel or transport block only through RRC signaling, or it can configure or instruct the above-mentioned data channel or transmission through a combination of RRC signaling and DCI signaling. The repeated transmission of blocks will be described separately below. In this embodiment, for the convenience of description, the repeated transmission of a data channel or a transmission block is simply referred to as repeated transmission.
[0104]
In one embodiment, the network device configures or instructs the repeated transmission only through high-layer signaling (the above-mentioned RRC signaling), and the high-layer signaling includes a first parameter indicating the above-mentioned repeated transmission, or the first parameter Indicates the above repeated transmission and the number of repeated transmissions.
[0105]
For example, a parameter used to indicate repeated transmission (referred to as the first parameter for short), such as pusch-AggregationFactor-r16, can be added to the RRC signaling to notify the terminal device to perform the aforementioned low-latency and high-reliability repeated transmission, namely , One UL grant schedules two or more repeated transmissions of one TB, and these two or more repeated transmissions can be in one slot, or can be in multiple In consecutive time slots. In addition, this parameter can also be used to notify the number of subsequent repetitions, such as 1, 2, 4, 6, 8, and so on. The number of repetitions is only a nominal number of transmissions. In actual transmission, one repetitive transmission may encounter a time slot boundary or an uplink/downlink (DL/UL) switching point and be split into multiple repetitive transmissions.
[0106]
The format of the above-mentioned first parameter may be, for example:
[0107]
pdsch-AggregationFactor-r16ENUMERATED{nA,nB,nC…}OPTIONAL
[0108]
Among them, nA, nB, and nC represent the number of repetitions, and the value is a natural number, and the number of configured repetitions is also a natural number. When pdsch-AggregationFactor-r16 is not configured, it means that the network device does not configure terminal equipment for low-latency and high-reliability repeated transmission, or the number of repeated transmissions is 1, or that the network side will not dynamically indicate through DCI signaling. The number of repeated transmissions.
[0109]
In another embodiment, the network device configures or instructs the repeated transmission only through high-layer signaling (the above-mentioned RRC signaling), and the high-layer signaling includes a second parameter that is used to enable or disable the dynamic nominal repeated transmission "Number of times", "Dynamic nominal repetitive transmission times" ON means that the network device will dynamically indicate the number of nominal repetitive transmissions through a certain domain in the DCI signaling, "Dynamic nominal repetitive transmission times" off means that there is no indication name in the DCI of the network device Relevant signaling field for the number of repeated transmissions. When the "number of dynamic nominal repeated transmissions" is turned on by the second parameter, the above repeated transmission is also turned on accordingly, and when the "number of dynamic nominal repeated transmissions" is turned off by the second parameter, the above repeated transmission is turned off accordingly.
[0110]
In this embodiment, it is also possible to increase the condition that the repeated transmission is turned on or off. For example, when the above-mentioned "number of dynamic nominal repeated transmissions" is turned on by the second parameter, and the number of dynamic nominal repeated transmissions is greater than or equal to the first value, The above repeated transmission is turned on, when the above “dynamic nominal repeated transmission times” is turned off by the second parameter, or the dynamic nominal repeated transmission times is turned on by the second parameter, but the dynamic nominal repeated transmission times are less than or equal to the second value, the above repeat The transmission is closed.
[0111]
In this embodiment, the above-mentioned “number of dynamic nominal repeated transmissions” can be indicated by DCI signaling, and the opening or closing of the domain is realized through the above-mentioned second parameter.
[0112]
For example, when the indication of the number of dynamic nominal repeated transmissions is configured as enabled by the above second parameter, the repeated transmission is also enabled at the same time; conversely, when the indication of the number of dynamic nominal repeated transmissions is configured as disabled by the second parameter above , Repeat transmission is also closed at the same time.
[0113]
For another example, when the indication of the number of dynamic nominal repeated transmissions is configured as enabled by the above second parameter, and the candidate nominal repeated transmission times is greater than or equal to the first value (for example, 0, 1, 2, etc.), the repeated transmission is also It is enabled at the same time; conversely, when the indication of the number of dynamic nominal repeated transmissions is configured as disabled by the above second parameter, or when the second parameter is configured as enabled and the candidate number of nominal repeated transmissions is less than or equal to the second value (For example, 0, 1, 2, etc.), repeated transmission is also closed at the same time.
[0114]
In this embodiment, it is also possible to determine whether to configure or indicate the above-mentioned repeated transmission through whether the time domain resource allocation configured by high-level signaling includes the number of repeated transmissions. For example, the time domain resource allocation related parameter is'PUSCH-TimeDomainResourceAllocation-16', If the parameter contains the number of repeated transmissions parameter, it means that the repeated transmission is configured, otherwise it means that the repeated transmission is not configured.
[0115]
In another embodiment, the network device configures or instructs the foregoing repeated transmission through high-level signaling and downlink control information, the high-level signaling includes a third parameter, the third parameter configures or indicates the foregoing repeated transmission, and the downlink control information includes Indication field, the indication field indicates whether to enable the above repeated transmission.
[0116]
In this embodiment, the above indication field may be any one or any combination of the following, that is, the indication field includes at least one of the following:
[0117]
DCI field used to indicate the number of nominal repeated transmissions;
[0118]
DCI field used to indicate time domain resource allocation;
[0119]
Information field used to indicate the method of repeated transmission and/or the number of nominal repeated transmissions; and
[0120]
An information field used to indicate the number of nominal repeated transmissions and/or time domain resource allocation methods.
[0121]
For the aforementioned DCI field used to indicate the number of nominal repeated transmissions, for example, it may be a separate DCI field, which is only used to transmit the nominal number of transmissions. When the above-mentioned high-level signaling indicates that the DCI field is turned on, and the DCI field indicates that the number of repeated transmissions is greater than or equal to a certain value (for example, 0, 1, 2, etc.), the terminal device is instructed to perform repeated transmission. The individual DCI field can be 1 bit or 2 bits, and the nominal number of transmissions can be a value configured by high-layer signaling. The high-layer signaling can be RRC signaling, or RRC signaling and MAC-CE signaling. , That is, RRC signaling is configured with one or more candidate values ​​for the number of repeated transmissions, and MAC-CE signaling selects one or more values ​​from them.
[0122]
For the aforementioned DCI field used to indicate time domain resource allocation, for example, when the DCI field indicates S+L>14, it means that the terminal device is notified to perform repeated transmission.
[0123]
For the above information field used to indicate the repeated transmission mode and/or the nominal number of repeated transmissions. For example, R15 supports slot-level repetitive transmission, and R16 contains low-latency and high-reliability repetitive transmission (referred to as R16 repetitive transmission). In this embodiment, an information field is used to represent the dynamic switching and repetition of R15 and R16. / Or an indication of the number of repetitions.
[0124]
In this embodiment, an information field of 1 bit or 2 bits or 3 bits or other bit values ​​can be used to indicate the repeated transmission mode and/or the number of nominal repeated transmissions. For example, different bit values ​​of the information field indicate different repetitions. Transmission method, or indicates different repeated transmission methods and the number of repeated transmissions.
[0125]
For example, the information field can be 2 bits, and different bit values ​​are used to indicate different repetitive transmission modes and/or nominal repetitive transmission times, as shown in Table 1 below:
[0131]
Table 2
[0132]
That is, when the bit value of the information field is '0', it indicates'R15 repeated transmission'; when the bit value of the information field is '1', it indicates'R16 repeated transmission, and the nominal number of repeated transmissions is configured by high-level signaling The number of times of the above-mentioned nominal repeated transmission is only illustrative, and the corresponding relationship between the information field bits of the DCI field and the meaning of the indication is also illustrative. In addition, the above-mentioned high-level signaling can be RRC signaling, RRC signaling and MAC-CE signaling, that is, RRC signaling is configured with one or more candidate values ​​for the number of repeated transmissions, and MAC-CE signaling is selected from them. A numerical value.
[0133]
For another example, the information field may also be 2 bits, and different bit values ​​thereof are used to indicate different repeated transmission modes and/or repeated transmission times. The repeated transmission times may be nominal, as shown in Table 3 below:
[0136]
table 3
[0137]
That is, when the bit value of the information field is '00', it indicates'R15 repeated transmission, and the number of repeated transmissions is the value 1 configured by higher layer signaling; when the bit value of the information field is '01', it indicates'R15 Repeated transmission, and the number of repeated transmissions is the value 2'configured by high-layer signaling; when the bit value of the information field is '10', it indicates'R16 repeated transmission, and the nominal number of repeated transmissions is the value 1 configured by high-layer signaling'; When the bit value of the information field is '11', it indicates'R16 repeated transmission, and the nominal number of repeated transmissions is the value 2 configured by higher layer signaling. The numerical value of the number of nominal repeated transmissions is only illustrative, the correspondence between the information field bits of the DCI field and the meaning of the indication is also illustrative, and the number of information fields used to indicate the R15 repeated transmission or the R16 repeated transmission is also illustrative. In addition, the above-mentioned high-level signaling can be RRC signaling, RRC signaling and MAC-CE signaling, that is, RRC signaling is configured with one or more candidate values ​​for the number of repeated transmissions, and MAC-CE signaling is selected from them. One or more values. The high-level signaling configuration of R15 repeated transmission and R16 repeated transmission may be the same parameter or different parameters, which is not limited in this embodiment.
[0138]
For another example, the information field may also be 3 bits, and different bit values ​​thereof are used to indicate different repeated transmission modes and/or repeated transmission times. The repeated transmission times may be nominal, as shown in Table 4 below:
[0140]
Table 4
[0141]
That is, when the bit value of the information field is '000', it indicates'R15 repeated transmission, and the number of repeated transmissions is the value 1 configured by higher layer signaling; when the bit value of the information field is '001', it indicates'R15 Repeated transmission, and the number of repeated transmissions is the value 2'configured by high-layer signaling; when the bit value of the information field is '010', it indicates'R16 repeated transmission, and the nominal number of repeated transmissions is the value 1 configured by high-layer signaling'; When the bit value of the information field is '011', it indicates'R16 repeated transmission, and the nominal number of repeated transmissions is the value 2 configured by higher layer signaling; when the bit value of the information field is '100', it indicates'R16 repeated transmission , And the nominal number of repeated transmissions is the value 3'configured by high-layer signaling; when the bit value of the information field is '101', it indicates'R16 repeated transmission, and the nominal number of repeated transmissions is the value 4'configured by high-layer signaling; When the bit value of the information field is '110', it indicates'R16 repeated transmission, and the nominal number of repeated transmissions is the value 5'configured by higher layer signaling; when the bit value of the information field is '111', it indicates'R16 repeated transmission. And the nominal number of repeated transmissions is the value 6'configured by higher layer signaling. The value of the number of nominal repeated transmissions mentioned above is only illustrative, the correspondence between the information field bits of the DCI field and the meaning of the indication is also illustrative, and the number of information fields used to indicate R15 repeated transmission or R16 repeated transmission is also illustrative. For example, the number of information fields used for R15 and R16 repetitive related indications can also be 1 and 7, 3 and 5, 4 and 4, 5 and 3, 6 and 2, 7 and 1. In addition, the above-mentioned high-level signaling can be RRC signaling, RRC signaling and MAC-CE signaling, that is, RRC signaling is configured with one or more candidate values ​​for the number of repeated transmissions, and MAC-CE signaling is selected from them. One or more values. In addition, the high-level signaling configuration of R15 repeated transmission and R16 repeated transmission may be the same parameter or different parameters, which is not limited in this embodiment.
[0142]
For the information field used to indicate the number of nominal repeated transmissions and/or time domain resource allocation methods, for example, it can be a joint code of the number of nominal repeated transmissions and the TDRA field. When the number of nominal repeated transmissions is greater than or equal to a certain value (for example, 0 , 1, 2, etc.), and the TDRA field indicates a certain resource allocation method (for example, S+L>14), indicating that the terminal device is notified to perform repeated transmission.
[0143]
In another embodiment, the network device configures or instructs the foregoing repeated transmission through high-level signaling and downlink control information. The high-level signaling includes a fourth parameter that configures or indicates the foregoing repeated transmission. The format is associated with whether to enable the repeated transmission.
[0144]
For example, when a terminal device detects a DCI format, it is used to instruct the terminal device to perform URLLC-related transmissions, and the terminal device is instructed to perform repeated transmissions through the configured high-level signaling and the detected DCI format and/or specific DCI signaling fields. .
[0145]
In this embodiment, only "network device configuration or instruction" is taken as an example for description. In specific implementation, "network device configuration or instruction" may mean that the network device sends configuration information or instruction information to the terminal device, Performing the foregoing configuration or instruction may also be that the terminal device receives configuration information or instruction information sent by the network device, and obtains the foregoing configuration or instruction from the network device.
[0146]
According to the embodiment of the present invention, the network device and the terminal device have a consistent understanding of the transmission of the reference signal, which ensures the reliability of the transmission of the reference signal.
[0147]
Example 2
[0148]
This embodiment provides a method for configuring the number of repeated transmissions, which is applied to a network device. FIG. 5 is a schematic diagram of the method for configuring the number of repeated transmissions in this embodiment. As shown in FIG. 5, the method includes:
[0149]
Step 501: The network device configures time-domain resource allocation information. The time-domain resource allocation information does not include the data channel type, or the time-domain resource allocation information includes the number of nominal repeated transmissions, or the time-domain resource allocation information includes Joint coding of data channel type and nominal number of repeated transmissions;
[0150]
Step 502: The network device sends the time domain resource allocation information.
[0151]
In this embodiment, the above-mentioned time domain resource allocation information can be configured through RRC signaling. This embodiment is not limited to this, and may also be configured through other high-level signaling.
[0152]
In this embodiment, in some cases, when the data channel is configured as the first type and the second type, the transmission mode of the reference signal is the same. In this embodiment, the network device may not indicate in the TDRA domain. Data channel type, and an indication of the number of nominal repeated transmissions is added; or, a joint coding is added for the data channel type and the number of nominal repeated transmissions.
[0153]
For example, in R15, an example of a TDRA indication is Table 6.1.2.1.1-2, as follows:
[0155]
In this embodiment, the above-mentioned second column'PUSCH mapping type' can be removed and replaced with the value of the number of nominal repeated transmissions configured by higher layer signaling, and the above-mentioned first type (ie'type A') can also be removed and replaced with The value of the nominal number of repeated transmissions configured by the higher layer signaling can also be removed from the second type (ie'typeB') and replaced with the value of the nominal number of repeated transmissions configured by the higher layer signaling. You can also modify the above second column to Joint indication of'data channel type and nominal number of repeated transmissions'. For example, as shown in Table 5 and Table 6,
[0159]
Table 6
[0160]
The above values ​​A, B, C, and D are all schematic, and the values ​​are natural numbers.
[0161]
The modified table and the above table 6.1.2.1.1-2 can exist at the same time. When high-layer signaling is configured for data channel repeated transmission, the modified table takes effect. When high-layer signaling is not configured for data channel repeated transmission, the above Table 6.1.2.1.1-2 takes effect.
[0162]
In this embodiment, since TDRA can be configured by high-level signaling, such as R15 time-domain resource allocation signaling, as shown below:
[0163]

[0164]
Then in R16, you can add the nominal repetitive transmission configuration'nrofrepetition' to TDRA, as shown below:
[0165]

[0166]
In the above example,'PUSCH-TimeDomainResourceAllocation' can also be a newly added parameter with the same function in R16, such as'PUSCH-TimeDomainResourceAllocation-16' and so on. In this example, the configurable value of the nominal number of repetitions'nrofrepetition' is only for illustration. You can also remove the configuration of'mappingType' in'PUSCH-TimeDomainResourceAllocation-16'.
[0167]
Through the method of this embodiment, the joint coding of TDRA and the number of repeated transmissions is realized.
[0168]
Example 3
[0169]
This embodiment provides a repeated transmission indication method, which is applied to a network device. FIG. 6 is a schematic diagram of the repeated transmission indication method of this embodiment. As shown in FIG. 6, the method includes:
[0170]
Step 601: The network device generates downlink control information. The downlink control information includes an information field, which is used to indicate the repeated transmission mode, or the repeated transmission mode and the corresponding nominal number of repeated transmissions, or the time domain resource allocation and Nominal repeated transmission times;
[0171]
Step 602: The network device sends the downlink control information.
[0172]
In this embodiment, the above-mentioned information field is, for example, 1 bit or 2 bits or 3 bits or other bits. Different bit values ​​can indicate different repeated transmission modes, or indicate different repeated transmission modes and corresponding retransmission times. Details See Table 1 to Table 4 of Example 1, and the description is omitted here.
[0173]
In addition, in this embodiment, different bit values ​​of the above-mentioned information field may also indicate different time-domain resource allocation and repeated transmission modes, as shown in the examples of Table 5 to Table 6 in Embodiment 2, and the description is omitted here. As a result, the joint coding of TDRA and the number of repeated transmissions is realized.
[0174]
According to the embodiment of the present invention, the repeated transmission mode can be indicated through the downlink control information, and the number of repeated transmissions can be further indicated. The terminal device can determine the position of the reference signal in the transmitted signal based on the downlink control information. To repeat it, and the network device can also determine the location of the reference signal in the transmitted signal based on this, so that the network device and the terminal device have a consistent understanding of the transmission of the reference signal, and the reliability of the transmission of the reference signal is ensured.
[0175]
Example 4
[0176]
This embodiment provides a reference signal sending device, which is configured at an originating end, such as a terminal device or a network device. Since the principle of the device to solve the problem is similar to the method of embodiment 1, its specific implementation can refer to the implementation of the method of embodiment 1, and the same contents will not be repeated.
[0177]
FIG. 7 is a schematic diagram of the reference signal sending device of this embodiment. In this embodiment, the reference signal sending device is configured in a terminal device. As shown in FIG. 7, the reference signal sending device 700 includes: a generating unit 701 and a sending unit 702. The generating unit 701 generates one or more signals corresponding to the same transmission block, the one or more signals include a data channel and a reference signal; the transmitting unit 702 transmits the one or more signals in one or more time domain resource segments , The position of the reference signal in the one or more signals is determined based on the one or more time domain resource segments.
[0178]
In this embodiment, the sending unit 701 may send the first signal in the first time domain resource segment and send the second signal in the second time domain resource segment. The first signal and the second signal are identical to the same transmission block. Correspondingly, and the first signal and the second signal respectively include a data channel and a reference signal, the position of the reference signal in the first signal is determined based on the first time domain resource segment, and the position of the reference signal in the second signal is based on The second time domain resource segment is determined.
[0179]
In this embodiment, the sending unit 701 may also send a third signal in the third time domain resource segment. The third signal corresponds to the aforementioned transmission block. The third signal includes a data channel and a reference signal. The location of the reference signal is determined based on the third time domain resource segment. In this example, the third time domain resource segment may be one or more than one, and correspondingly, the third signal may also be one or more than one.
[0180]
In this embodiment, the position of the reference signal in the above one or more signals may be determined based on at least one of the following:
[0181]
The symbol length of the time domain resource segment;
[0182]
Time domain resource allocation (TDRA) configuration or indication of the time domain resource segment;
[0183]
High-level signaling configuration; and
[0184]
The agreement stipulates.
[0185]
In one embodiment, if the network device is not configured with the second type reference signal, or the network device is configured with one or more second type reference signals, the sending unit 701 considers that the network device is not configured with the second type reference signal, based on The above protocol provides for determining the position of the reference signal in the above one or more signals.
[0186]
In one embodiment, the network device is configured with one or more first-type reference signals and one or more second-type reference signals, and the data channels in the above-mentioned signals are configured as the first type, then the reference signals in the above-mentioned signals The position of is the first symbol of the corresponding time domain resource segment.
[0187]
In one embodiment, the network device is configured with one or more first-type reference signals and one or more second-type reference signals, the data channels in the above-mentioned signals are configured as the first type, and the reference signals in the above-mentioned signals are The location is a location determined according to at least one of the following: the symbol length of the corresponding time domain resource segment, the time domain resource allocation configuration or indication of the corresponding time domain resource segment, the high-level signaling configuration, and the protocol specification.
[0188]
In one embodiment, the network device is configured with one or more reference signals of the first type and one or more reference signals of the second type, the data channel in the above-mentioned signal is configured as the first type, and the position of the reference signal in the above-mentioned signal At least one of the following: the corresponding first symbol of the time domain resource segment, the corresponding second symbol of the time domain resource segment, and the reference signal position corresponding to the first type.
[0189]
In one embodiment, the network device is configured with one or more first-type reference signals, the data channels in the above-mentioned signals are configured as the first-type or the second-type, and the positions of the reference signals in the above-mentioned signals are in the corresponding time domain. The first symbol and/or the second symbol of the resource segment.
[0190]
In this embodiment, as shown in FIG. 7, the reference signal sending apparatus 700 further includes:
[0191]
The receiving unit 703 receives a command sent by the network device, and the command configures or instructs the repeated transmission of the data channel or the transmission block. In addition, the receiving unit 703 may also receive other configuration information sent by the network device, as described above, and will not be repeated here.
[0192]
In one embodiment, the network device configures or instructs the repeated transmission of the above-mentioned transport block only through high-layer signaling, and the high-layer signaling includes a first parameter that indicates the repeated transmission of the above-mentioned transport block, or the first parameter It indicates the repeated transmission of the above-mentioned transmission block and the number of repeated transmissions.
[0193]
In one embodiment, the network device configures or instructs the repeated transmission of the above-mentioned transmission block only through high-level signaling. The high-level signaling includes a second parameter that enables or disables the number of dynamic nominal repeated transmissions. When the dynamic nominal repeats When the number of transmissions is turned on by the second parameter, the repeated transmission of the transmission block is turned on, and when the number of dynamic nominal repeated transmissions is turned off by the second parameter, the repeated transmission of the transmission block is turned off.
[0194]
In this embodiment, it may also be that when the number of dynamic nominal repeated transmissions is enabled by the second parameter, and the number of dynamic nominal repeated transmissions is greater than or equal to the first value, the repeated transmission of the transmission block is enabled. When the number of repeated transmissions is turned off by the second parameter, or the number of dynamic nominal repeated transmissions is turned on by the second parameter, but the number of dynamic nominal repeated transmissions is less than or equal to the second value, the repeated transmission of the transmission block is turned off.
[0195]
In one embodiment, the network device configures or instructs the repeated transmission of the above-mentioned transport block through high-level signaling and downlink control information, the high-level signaling includes a third parameter, and the third parameter configures or instructs the repeated transmission of the above-mentioned transport block, The aforementioned downlink control information includes an indication field, which indicates whether to enable the aforementioned repeated transmission.
[0196]
In this embodiment, the indication field includes at least one of the following: a DCI field used to indicate the number of nominal repeated transmissions; a DCI field used to indicate time domain resource allocation; used to indicate a repeated transmission mode and/or the number of nominal repeated transmissions Information field; and an information field used to indicate the number of nominal repeated transmissions and/or time-domain resource allocation methods.
[0197]
In one embodiment, the network device configures or instructs the repeated transmission of the above-mentioned transport block through high-layer signaling and downlink control information, and the high-layer signaling includes a fourth parameter that configures or instructs the repeated transmission of the above-mentioned transport block. The format of the aforementioned downlink control information is associated with whether the aforementioned repeated transmission is enabled.
[0198]
FIG. 8 is another schematic diagram of the reference signal sending apparatus of this embodiment. In this embodiment, the reference signal sending apparatus is configured in a network device. As shown in FIG. 8, the reference signal sending device 800 includes: a generating unit 801 and a sending unit 802. The implementation of the generating unit 801 and the sending unit 802 is similar to the generating unit 701 and sending of the reference signal sending device 700 shown in FIG. The unit 702 is the same and will not be repeated here.
[0199]
As shown in FIG. 8, the reference signal sending device 800 further includes:
[0200]
The configuration unit 803, which sends a command to the terminal device, configures or instructs the repeated transmission of the data channel or the transmission block through the command.
[0201]
In this embodiment, the above-mentioned repeated transmission configuration has been described in detail in the description of the reference signal sending apparatus 700 shown in FIG.
[0202]
In this embodiment, the sending unit 802 may also send other configuration information to the terminal device, as described above, and will not be repeated here.
[0203]
According to the embodiment of the present invention, the network device and the terminal device have a consistent understanding of the transmission of the reference signal, which ensures the reliability of the transmission of the reference signal.
[0204]
Example 5
[0205]
This embodiment provides a device for configuring the number of repeated transmissions, and the device is configured in a network device. Since the principle of the device to solve the problem is similar to the method of the second embodiment, the specific implementation can refer to the implementation of the method of the second embodiment, and the same contents will not be repeated.
[0206]
FIG. 9 is a schematic diagram of the device for configuring the number of repeated transmissions in this embodiment. As shown in FIG. 9, the device 900 includes:
[0207]
The configuration unit 901 and the sending unit 902. The configuration unit 901 configures time-domain resource allocation information, where the time-domain resource allocation information does not include the data channel type, or the time-domain resource allocation information includes the number of nominal repeated transmissions, or The time domain resource allocation information includes the joint coding of the data channel type and the nominal number of repeated transmissions; the sending unit 902 sends the time domain resource allocation information.
[0208]
Through the device of this embodiment, the joint coding of TDRA and the number of repeated transmissions is realized.
[0209]
Example 6
[0210]
This embodiment provides a repeated transmission indication device, which is configured in a network device. Since the principle of the device to solve the problem is similar to the method of embodiment 3, its specific implementation can refer to the implementation of the method of embodiment 3, and the same content will not be repeated.
[0211]
FIG. 10 is a schematic diagram of a repeated transmission indication device 1000 of this embodiment. As shown in FIG. 10, the device 1000 includes: a generating unit 1001 and a sending unit 1002. The generating unit 1001 generates downlink control information, the downlink control information includes an information field, the information field is used to indicate the repeated transmission mode, or indicate the repeated transmission mode and the corresponding number of nominal repeated transmissions, or indicate the time domain resource allocation and nominal repetition Number of transmissions; the sending unit 1002 sends the downlink control information.
[0212]
In this embodiment, the information field can be 1 bit or 2 bits or 3 bits or other bits, and each bit value can indicate the repeated transmission mode, and can also indicate the repeated transmission mode and the number of repeated transmissions. For details, see Embodiment 1 The examples in Table 1 to Table 4 can also indicate the time domain resource allocation and the number of repeated transmissions. For details, refer to the examples in Table 5 and Table 6 of Embodiment 2, which will not be repeated here.
[0213]
According to the embodiment of the present invention, the network device and the terminal device have a consistent understanding of the transmission of the reference signal, which ensures the reliability of the transmission of the reference signal.
[0214]
Example 7
[0215]
This embodiment provides a terminal device, which includes the device described in Embodiment 4.
[0216]
Fig. 11 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in FIG. 11, the terminal device 1100 may include a central processing unit 1101 and a memory 1102; the memory 1102 is coupled to the central processing unit 1101. It is worth noting that this figure is exemplary; other types of structures can also be used to supplement or replace this structure to implement telecommunication functions or other functions.
[0217]
In one embodiment, the functions of the device described in embodiment 4 can be integrated into the central processing unit 1101, and the central processing unit 1101 implements the functions of the device described in embodiment 4, which is related to the device described in embodiment 4 The functions of is incorporated here, so I won’t repeat them here.
[0218]
In another embodiment, the device described in Example 4 is configured separately from the central processing unit 1101. For example, the device described in Example 4 can be configured as a chip connected to the central processing unit 1101, and the central processing unit 1101 The control to realize the function of the device described in the fourth embodiment.
[0219]
As shown in FIG. 11, the terminal device 1100 may further include: a communication module 1103, an input unit 1104, an audio processing unit 1105, a display 1106, and a power supply 1107. It is worth noting that the terminal device 1100 does not necessarily include all the components shown in FIG. 11; in addition, the terminal device 1100 may also include components not shown in FIG. 11, and reference may be made to the prior art.
[0220]
As shown in FIG. 11, the central processing unit 1101 is sometimes also called a controller or an operating control, and may include a microprocessor or other processor devices and/or logic devices. The central processing unit 1101 receives inputs and controls various components of the terminal device 1100. Operation of components.
[0221]
Wherein, the memory 1102 may be, for example, one or more of a cache, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable devices. Can store various information, in addition can also store and execute programs related to the information. And the central processing unit 1101 can execute the program stored in the memory 1102 to realize information storage or processing. The functions of other components are similar to the existing ones, so I won't repeat them here. Each component of the terminal device 1100 may be implemented by dedicated hardware, firmware, software, or a combination thereof, without departing from the scope of the present invention.
[0222]
Through the terminal device of this embodiment, the network device and the terminal device have a consistent understanding of the transmission of the reference signal, which ensures the reliability of the transmission of the reference signal.
[0223]
Example 8
[0224]
The embodiment of the present invention also provides a network device, and the network device includes the device described in Embodiment 5 or Embodiment 6.
[0225]
FIG. 12 is a schematic diagram of an implementation manner of a network device according to an embodiment of the present invention. As shown in FIG. 12, the network device 1200 may include: a central processing unit (CPU) 1201 and a memory 1202; the memory 1202 is coupled to the central processing unit 1201. The memory 1202 can store various data; in addition, it also stores information processing programs, which are executed under the control of the central processing unit 1201 to receive various information sent by the terminal device and send various information to the terminal device.
[0226]
In one embodiment, the function of the device described in embodiment 5 or embodiment 6 can be integrated into the central processing unit 1201, and the central processing unit 1201 realizes the function of the device described in embodiment 5 or embodiment 6, wherein The functions of the device described in Embodiment 5 or Embodiment 6 are incorporated here, and will not be repeated here.
[0227]
In another embodiment, the device described in embodiment 5 or embodiment 6 can be configured separately from the central processing unit 1201. For example, the device described in embodiment 5 or embodiment 6 can be connected to the central processing unit 1201. The chip realizes the functions of the device described in Embodiment 5 or Embodiment 6 under the control of the central processing unit 1201.
[0228]
In addition, as shown in FIG. 12, the network device 1200 may further include: a transceiver 1203, an antenna 1204, etc.; wherein the functions of the above-mentioned components are similar to those of the prior art, and will not be repeated here. It is worth noting that the network device 1200 does not necessarily include all the components shown in FIG. 12; in addition, the network device 1200 may also include components not shown in FIG. 12, and reference may be made to the prior art.
[0229]
Through the network device of this embodiment, the network device and the terminal device have a consistent understanding of the transmission of the reference signal, which ensures the reliability of the transmission of the reference signal.
[0230]
Example 9
[0231]
An embodiment of the present invention also provides a communication system, which includes a network device and a terminal device. The network device is, for example, the network device 1200 described in Embodiment 8, and the terminal device is, for example, the terminal device 1100 described in Embodiment 7.
[0232]
In this embodiment, the terminal device is, for example, a UE served by gNB. In addition to the functions of the device described in Embodiment 4, it also includes the conventional composition and functions of the terminal device. As described in Embodiment 7, it is not here. Repeat it again.
[0233]
In this embodiment, the network device may be, for example, the gNB in ​​NR. In addition to the functions of the device described in Embodiment 5 or Embodiment 6, it also includes the regular composition and functions of the network device, as described in Embodiment 8. I will not repeat them here.
[0234]
Through the communication system of this embodiment, the network equipment and the terminal equipment have a consistent understanding of the transmission of the reference signal, which ensures the reliability of the transmission of the reference signal.
[0235]
The embodiment of the present invention also provides a computer-readable program, wherein when the program is executed in the terminal device, the program causes the computer to execute the method described in Embodiment 1 in the terminal device.
[0236]
The embodiment of the present invention also provides a storage medium storing a computer-readable program, wherein the computer-readable program enables a computer to execute the method described in Embodiment 1 in a terminal device.
[0237]
The embodiment of the present invention also provides a computer-readable program, wherein when the program is executed in the network device, the program causes the computer to execute the embodiment 1 or the embodiment 2 or the embodiment 3 in the network device Methods.
[0238]
The embodiment of the present invention also provides a storage medium storing a computer readable program, wherein the computer readable program enables a computer to execute the method described in Embodiment 1, or Embodiment 2 or Embodiment 3 in a network device.
[0239]
The above devices and methods of the present invention can be implemented by hardware, or can be implemented by hardware combined with software. The present invention relates to such a computer-readable program, when the program is executed by a logic component, the logic component can realize the above-mentioned device or constituent component, or the logic component can realize the above-mentioned various methods Or steps. Logic components such as field programmable logic components, microprocessors, processors used in computers, etc. The present invention also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memory, and the like.
[0240]
The method/device described in conjunction with the embodiments of the present invention may be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams and/or one or more combinations of the functional block diagrams shown in the figure may correspond to each software module of the computer program flow or each hardware module. These software modules can respectively correspond to the steps shown in the figure. These hardware modules can be implemented, for example, by using a field programmable gate array (FPGA) to solidify these software modules.
[0241]
The software module can be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the art. A storage medium may be coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be a component of the processor. The processor and the storage medium may be located in the ASIC. The software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a larger-capacity MEGA-SIM card or a large-capacity flash memory device, the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
[0242]
One or more of the functional blocks and/or one or more combinations of the functional blocks described in the drawings can be implemented as general-purpose processors, digital signal processors (DSPs) for performing the functions described in the present invention. ), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component or any appropriate combination thereof. One or more of the functional blocks described in the drawings and/or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, or multiple micro-processing Or any other such configuration.
[0243]
The present invention has been described above in conjunction with specific embodiments, but it should be clear to those skilled in the art that these descriptions are all exemplary and do not limit the protection scope of the present invention. Those skilled in the art can make various variations and modifications to the present invention according to the spirit and principle of the present invention, and these variations and modifications are also within the scope of the present invention.
[0244]
Regarding the above-mentioned implementations disclosed in this embodiment, the following supplementary notes are also disclosed:
[0245]
1. A repeated transmission indication device, which is configured in a network device, wherein the device includes:
[0246]
A generating unit, which generates downlink control information, the downlink control information includes an information field, the information field is used to indicate the repeated transmission mode, or indicate the repeated transmission mode and the corresponding number of nominal repeated transmissions, or indicate the time domain resource allocation and nominal Number of repeated transmissions;
[0247]
A sending unit that sends the downlink control information.
[0248]
2. The device according to appendix 1, wherein the information field is 1 bit or 2 bits or 3 bits, and different bit values ​​indicate different repeated transmission modes, or indicate different repeated transmission modes and nominal repetitions. The number of transmissions, or indicates different time domain resource allocations and the number of nominal repeated transmissions.

Claims

[Claim 1]
A reference signal sending device, configured at the sending end, wherein the device includes: a generating unit that generates one or more signals corresponding to the same transmission block, the one or more signals including a data channel and a reference signal A sending unit, which sends the one or more signals in one or more time domain resource segments, and the position of the reference signal in the one or more signals is determined based on the one or more time domain resource segments.
[Claim 2]
The apparatus according to claim 1, wherein the sending unit sends a first signal in a first time domain resource segment, and sends a second signal in a second time domain resource segment, the first signal and the second signal Corresponding to the same transmission block, and the first signal and the second signal respectively include a data channel and a reference signal, and the position of the reference signal in the first signal is determined based on the first time domain resource segment, The position of the reference signal in the second signal is determined based on the second time domain resource segment.
[Claim 3]
The apparatus according to claim 2, wherein the sending unit sends a third signal in a third time domain resource segment, the third signal corresponds to the transmission block, and the third signal includes a data channel and a reference Signal, the position of the reference signal in the third signal is determined based on the third time domain resource segment; wherein, the third time domain resource segment is one or more than one, and correspondingly, the third signal is one or More than one.
[Claim 4]
The apparatus according to claim 1, wherein determining based on the one or more time domain resource segments refers to determining based on at least one of the following: a symbol length of the time domain resource segment; Time domain resource allocation (TDRA) configuration or indication; high-level signaling configuration; and protocol regulations.
[Claim 5]
The apparatus according to claim 4, wherein the sending end is a terminal device, and the network device is not configured with the second type reference signal, or the network device is configured with one or more second type reference signals, and the sending unit considers The network device is not configured with the second type of reference signal, and the position of the reference signal in the one or more signals is determined based on the protocol.
[Claim 6]
The apparatus according to claim 1, wherein the network device is configured with one or more reference signals of the first type and one or more reference signals of the second type, and the data channels in the signals are configured as the first type, so The position of the reference signal in the signal is the first symbol of the corresponding time domain resource segment.
[Claim 7]
The apparatus according to claim 1, wherein the network device is configured with one or more reference signals of the first type and one or more reference signals of the second type, and the data channels in the signals are configured as the first type, so The position of the reference signal in the signal is a position determined according to at least one of the following: the symbol length of the corresponding time domain resource segment, the time domain resource allocation configuration or indication of the corresponding time domain resource segment, high-level signaling Configuration, and protocol provisions.
[Claim 8]
The apparatus according to claim 1, wherein the network device is configured with one or more reference signals of the first type and one or more reference signals of the second type, and the data channels in the signals are configured as the first type, so The position of the reference signal in the signal is at least one of the following: the corresponding first symbol of the time domain resource segment, the corresponding second symbol of the time domain resource segment, and the reference corresponding to the first type Signal location.
[Claim 9]
The apparatus according to claim 1, wherein the network device is configured with one or more first-type reference signals, the data channel in the signal is configured as the first type, and the position of the reference signal in the signal is corresponding The first symbol and/or the second symbol of the time domain resource segment.
[Claim 10]
The apparatus according to claim 1, wherein the network device is configured with one or more reference signals of the first type, the data channel in the signal is configured as the second type, and the position of the reference signal in the signal is corresponding The first symbol and/or the second symbol of the time domain resource segment.
[Claim 11]
The device according to claim 1, wherein the sending end is a terminal device, and the device further comprises: a receiving unit, which receives a command sent by a network device before the sending unit sends the signal, the command Configure or indicate repeated transmission of data channels or transport blocks.
[Claim 12]
The device according to claim 1, wherein the sending end is a network device, and the device further comprises: a configuration unit, which sends a command to the terminal device before the sending unit sends the signal, and passes the command Configure or indicate repeated transmission of data channels or transport blocks.
[Claim 13]
The apparatus according to claim 11, wherein the command to configure or instruct the repeated transmission of the data channel or the transport block comprises: the network device configures or instructs the repeated transmission of the transport block only through high-level signaling, and the high-level signaling Let include a first parameter, the first parameter indicating repeated transmission of the transmission block, or the first parameter indicating repeated transmission of the transmission block and the number of repeated transmissions.
[Claim 14]
The apparatus according to claim 11, wherein the command to configure or instruct the repeated transmission of the data channel or the transport block comprises: the network device configures or instructs the repeated transmission of the transport block only through high-level signaling, and the high-level signaling The command includes a second parameter. The second parameter turns on or off the number of dynamic nominal repeated transmissions. When the number of dynamic nominal repeated transmissions is turned on by the second parameter, the repeated transmission of the transmission block is turned on. When the number of dynamic nominal repeated transmissions is turned off by the second parameter, the repeated transmission of the transmission block is turned off.
[Claim 15]
The apparatus according to claim 14, wherein when the number of dynamic nominal repeated transmissions is enabled by the second parameter, and the number of nominal repeated transmissions is greater than or equal to a first value, the repeated transmission of the transmission block is enabled, When the number of dynamic nominal repeated transmissions is turned off by the second parameter, or the number of dynamic nominal repeated transmissions is turned on by the second parameter, but the nominal number of repeated transmissions is less than or equal to the second value, the transmission block The repeat transmission is turned off.
[Claim 16]
The apparatus according to claim 11, wherein the command to configure or instruct the repeated transmission of the data channel or the transmission block comprises: a network device configures or instructs the repeated transmission of the transmission block through high-level signaling and downlink control information, so The high-layer signaling includes a third parameter that configures or indicates repeated transmission of the transport block, and the downlink control information includes an indication field that indicates whether to enable the repeated transmission.
[Claim 17]
The apparatus according to claim 16, wherein the indication field comprises at least one of the following: a DCI field used to indicate the number of nominal repeated transmissions; a DCI field used to indicate time domain resource allocation; a DCI field used to indicate repeated transmission modes and / Or an information field for the number of nominal repeated transmissions; and an information field for indicating the number of nominal repeated transmissions and/or the way of resource allocation in the time domain.
[Claim 18]
The apparatus according to claim 11, wherein the command to configure or instruct the repeated transmission of the data channel or the transmission block comprises: a network device configures or instructs the repeated transmission of the transmission block through high-level signaling and downlink control information, so The high-layer signaling includes a fourth parameter, which configures or indicates repeated transmission of the transmission block, and the format of the downlink control information is associated with whether to enable the repeated transmission.
[Claim 19]
A device for configuring the number of repeated transmissions is configured in a network device, wherein the device includes: a configuration unit configured to configure time domain resource allocation information, where the time domain resource allocation information does not include a data channel type, or the time domain The resource allocation information includes the number of nominal repeated transmissions, or the time-domain resource allocation information includes a joint code of the data channel type and the number of nominal repeated transmissions; a sending unit, which sends the time-domain resource allocation information.
[Claim 20]
A repeated transmission indication device, configured in a network device, wherein the device includes: a generating unit that generates downlink control information, the downlink control information includes an information field, and the information field is used to indicate a repeated transmission mode, or to indicate Repeated transmission mode and corresponding nominal repeated transmission times, or indicate time domain resource allocation and nominal repeated transmission times; a sending unit, which sends the downlink control information.