Technical field
[0001]
This application relates to the field of communications, and in particular to a method, device, and communication system for sending downlink control information.
Background technique
[0002]
In the existing wireless communication system, the downlink data transmission from the network device to the terminal device can be disturbed by the terminal device with higher priority.
[0003]
The existing wireless communication system defines a specific downlink control information format to indicate which time-frequency resources of low-priority terminal devices that are used to carry downlink data are disturbed by higher-priority terminal devices. Through the indication of the specific downlink control information format, the low-priority terminal device can better demodulate the corresponding transmission data block.
[0004]
It should be noted that the above introduction to the technical background is only set forth to facilitate a clear and complete description of the technical solution of the present application 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 this application.
[0005]
Summary of the invention
[0006]
With the development of communication technology, it may happen that the uplink data transmission of the terminal device is disturbed by the terminal device of higher priority. The inventor of the present application found that in the existing communication technology, there is no downlink control information to indicate to low-priority terminal devices which time-frequency resources used to carry uplink data are occupied by higher-priority terminal devices. disturb.
[0007]
The embodiments of the present application provide a sending method, a receiving method, a device, and a communication system for downlink control information, which can indicate to low-priority terminal equipment which time-frequency resources used to carry uplink data have higher priority through the downlink control information. Therefore, when the uplink data transmission of the terminal device is disturbed, the terminal device can be effectively indicated.
[0008]
According to the first aspect of the embodiments of the present application, there is provided an apparatus for sending downlink control information (DCI), which is set in a network device, and the apparatus includes: a first sending unit configured to send to a terminal device a Disturbing a first DCI of a first time-frequency resource used for sending uplink data, where the first DCI at least includes a first field indicating a location of the first time-frequency resource.
[0009]
According to a second aspect of the embodiments of the present application, a device for receiving downlink control information (DCI) is provided, which is set in a terminal device. The receiving device includes: a first receiving unit configured to receive instructions sent by a network device The first DCI of the first time-frequency resource that is disturbed for sending uplink data, where the first DCI at least includes a first field indicating the location of the first time-frequency resource.
[0010]
According to a third aspect of the embodiments of the present application, a communication system is provided, the communication system includes a terminal device and a network device, and the terminal device includes the downlink control information (DCI) described in the second aspect of the above-mentioned embodiment The receiving device of the network device includes the downlink control information (DCI) sending device as described in the first aspect of the above-mentioned embodiment.
[0011]
The beneficial effect of the embodiments of the present application is that the terminal device can be effectively instructed when the uplink data transmission of the terminal device is disturbed.
[0012]
With reference to the following description and drawings, specific implementations of the present application are disclosed in detail, indicating the ways in which the principles of the present application can be adopted. It should be understood that the scope of the implementation of the present application is not limited thereby. Within the scope of the terms of the appended claims, the implementation of the present application includes many changes, modifications and equivalents.
[0013]
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 .
[0014]
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
[0015]
The elements and features described in one drawing or one implementation of the embodiment of the present application may be combined with the elements and features shown in one or more other drawings or implementations. 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.
[0016]
The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the embodiments of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the attached picture:
[0017]
Figure 1 is a schematic diagram of the communication system of the present application;
[0018]
2 is a schematic diagram of a method for sending downlink control information in Embodiment 1 of the present application;
[0019]
FIG. 3 is a schematic diagram of a method for receiving downlink control information according to Embodiment 2 of the present application;
[0020]
4 is a schematic diagram of a device for sending downlink control information in Embodiment 3 of the present application;
[0021]
FIG. 5 is a schematic diagram of a receiving apparatus for downlink control information according to Embodiment 4 of the present application;
[0022]
FIG. 6 is a schematic diagram of the structure of a network device according to Embodiment 5 of the present application;
[0023]
FIG. 7 is a schematic diagram of the structure of a terminal device according to Embodiment 6 of the present application;
[0024]
FIG. 8 is a working flowchart of the communication system according to Embodiment 7 of the present application;
[0025]
FIG. 9 is a schematic diagram of a method for sending downlink control information according to Embodiment 8 of the present application;
[0026]
FIG. 10 is a schematic diagram of a method for receiving downlink control information according to Embodiment 9 of the present application;
[0027]
FIG. 11 is a schematic diagram of a device for sending downlink control information according to Embodiment 10 of the present application;
[0028]
FIG. 12 is a schematic diagram of a receiving apparatus for downlink control information according to Embodiment 11 of the present application;
[0029]
FIG. 13 is a schematic diagram of the structure of a network device in Embodiment 12 of the present application;
[0030]
FIG. 14 is a schematic diagram of the structure of a network device according to Embodiment 13 of the present application;
[0031]
FIG. 15 is a schematic diagram of the work flow of the communication system according to Embodiment 14 of the present application.
Detailed ways
[0032]
With reference to the drawings, the foregoing and other features of this application will become apparent through the following description. In the description and drawings, specific implementations of the application are specifically disclosed, which indicate some implementations in which the principles of the application can be adopted. It should be understood that the application is not limited to the described implementations, on the contrary, the The application includes all modifications, variations and equivalents falling within the scope of the appended claims. Various embodiments of the present application will be described below in conjunction with the drawings. These implementation manners are only exemplary, and not a limitation of the present application.
[0033]
In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements in terms of appellations, 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.
[0034]
In the embodiments of the present application, 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 "the" "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.
[0035]
In the embodiments of this application, 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.
[0036]
In addition, 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 currently known or future communication protocols.
[0037]
In the embodiments of the present application, 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.
[0038]
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.
[0039]
In the embodiments of the present application, the term "User Equipment" (UE, User Equipment) or "Terminal Equipment" (TE, Terminal Equipment), for example, refers to a device that accesses a communication network through a network device and receives network services. The terminal device may be fixed or mobile, and may also be called a mobile station (MS, Mobile Station), terminal, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, etc.
[0040]
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.
[0041]
For another example, in scenarios such as the Internet of Things (IoT), the terminal device may also be a machine or device that performs monitoring or measurement. For example, it may 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.
[0042]
The following describes the scenarios of the embodiments of the present application through examples, but the present application is not limited to this.
[0043]
Fig. 1 is a schematic diagram of the communication system of the present application, schematically illustrating the case of taking terminal equipment and network equipment as an example. As shown in Fig. 1, the communication system 100 may include a network equipment 101 and a terminal equipment 102 (for simplicity, Figure 1 only takes one terminal device as an example for illustration).
[0044]
In the embodiment of the present application, 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.
[0045]
Wherein, the terminal device 102 can send data to the network device 101, for example, using authorization or unauthorized transmission. The terminal 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/non-acknowledgement NACK information, etc. The terminal device 102 can confirm the end of the transmission process according to the feedback information, or it can further Perform new data transmission, or data retransmission can be performed.
[0046]
In addition, before the terminal device 102 accesses the network device 101, the network device 101 can send information related to system information to the terminal device 102, and the terminal device 102 detects the received information to achieve downlink synchronization and communicate with the network device 101. establish connection.
[0047]
The following description takes the network device in the communication system as the sending end and the terminal device as the receiving end as an example, but the application is not limited to this, and the sending end and/or the receiving end may also be other devices. For example, this application is not only applicable to signal transmission between network equipment and terminal equipment, but also applicable to signal transmission between two terminal equipment.
[0048]
Example 1
[0049]
Embodiment 1 of the present application provides a method for sending downlink control information (DCI), which may be executed by a network device.
[0050]
FIG. 2 is a schematic diagram of a method for sending downlink control information (DCI) in this embodiment. As shown in FIG. 2, the method includes:
[0051]
Step 201: The network device sends a first DCI indicating a first time-frequency resource used to send uplink data that is disturbed to a terminal device, where the first DCI at least includes a first DCI indicating the location of the first time-frequency resource. Field.
[0052]
According to this embodiment, the downlink control information can be used to indicate to the terminal device which time-frequency resources used to carry uplink data are disturbed by a terminal device with a higher priority. Therefore, when the uplink data transmission of the terminal device is disturbed , Can effectively instruct the terminal equipment.
[0053]
In this embodiment, the first time-frequency resource is interrupted, which can also be referred to as pre-emption, which means that the terminal device receives higher data when transmitting uplink data through the first time-frequency resource. Disturbance of priority terminal equipment.
[0054]
In this embodiment, when the first time-frequency resource of the terminal device is disturbed, the terminal device has a lower priority on the first time-frequency resource. Wherein, the expression of the lower priority (that is, the manner in which the uplink data transmission is disturbed) may be, for example, that the terminal device does not transmit on the first time-frequency resource, or transmits with a reduced power, or uses an incorrect The uplink data borne in the first time-frequency resource is sent in a cross multiple access mode. Wherein, reducing the power to transmit the uplink data means that the terminal device reduces the transmission power relative to the normal transmission power, so that the uplink data is transmitted at a lower power than the terminal device with a higher priority.
[0055]
In this embodiment, the expression manner of the lower priority may be instructed by the first DCI to the terminal device, or may be preset.
[0056]
In this embodiment, the terminal device may monitor (monitor) the first DCI in a certain period, and the period may be less than or equal to the period used by the terminal device to monitor (monitor) the second DCI. The second DCI is used to instruct the terminal device to send uplink data in the second time-frequency resource.
[0057]
In this embodiment, the DCI format of the first DCI is the same as or different from the DCI format of the third DCI, where the third DCI can be used to indicate to the terminal device that it is disturbed. The third time-frequency resource for transmitting downlink data. The third DCI may be a DCI with a specific format, for example, it may be a DCI format 2_1 defined in the standard Rel-15 of the first phase of 5G.
[0058]
In this embodiment, the DCI format of the first DCI (DCI format) is the same as the DCI format of the third DCI, which means that the first DCI and the third DCI have the same purpose, that is, to indicate that the resource is disturbed. Or it is preempted, and the first DCI and the third DCI use the same field but have different values. When the DCI format of the first DCI is the same as the DCI format of the third DCI, the DCI format of the first DCI may add an information field (information field) to the format of the third DCI. The information bit in the information field is used to indicate whether the currently sent DCI is the first DCI or the third DCI. For example, when the information field is 0, it means that the DCI is the first DCI, and when the information field is 1, it means the DCI. The third DCI.
[0059]
In addition, when the DCI format (DCI format) of the first DCI is the same as the DCI format of the third DCI, since the third DCI is a UE-group common DCI, the first DCI It is also a group common (UE-group common) DCI.
[0060]
In this embodiment, the DCI format of the first DCI (DCI format) is different from the DCI format of the third DCI (DCI format), which means that the first DCI and the third DCI have different usages, that is, the first DCI It is used to indicate that the uplink resource is disturbed or preempted, the third DCI is used to indicate that the downlink resource is disturbed or preempted, and the first DCI and the third DCI have different fields. When the DCI format of the first DCI is different from the DCI format of the third DCI, the first DCI is a UE-specific DCI of the terminal device, or the first DCI is a group common (UE-group) common) DCI. Among them, the dedicated (UE-specific) DCI refers to the DCI only used to indicate the terminal device, and the group common (UE-group common) DCI refers to the DCI used to identify each terminal device in the terminal device group containing the terminal device. Directed DCI.
[0061]
In this embodiment, the first field of the first DCI may have at least one first subfield, and the first subfield corresponds to a serving cell of the terminal device. Therefore, each first subfield can be specific to the The serving cell corresponding to the first subfield indicates the location of the first time-frequency resource.
[0062]
The length of the data bits of the first subfield may be a fixed value or a variable value, where the fixed value may be a preset value, for example, and the preset value may be a preset value of the network device when it leaves the factory. Or the preset value of the terminal device when it leaves the factory. In this embodiment, the length of the data bit of the first subfield can be configured by the network device to the terminal device, for example, the network device is configured to the terminal device through high-level signaling.
[0063]
In this embodiment, when the frequency domain division method of the first time-frequency resource is to use the entire frequency band as the division unit, more than one data bit in the first subfield can be used to indicate one time unit in the frequency band Whether to be disturbed, or one data bit of the first subfield may be used to indicate whether more than one time unit in the frequency band is disturbed.
[0064]
For example, in the time domain, the length of the data bits of the first subfield is a fixed value L, such as 14 bits. The first subfield is used to indicate which time units of the N time units in the first time-frequency resource are disturbed. Among them, N and L are both natural numbers. In this embodiment, the first time-frequency resource may be N time units after n+N3 in the time domain, where n is the time unit when the terminal device detects the first DCI, and N3 is the terminal device solution. The unit of time required for the process of adjusting the first DCI and preparing to switch to a lower priority.
[0065]
If n ≦ L, when , the consecutive data bits (bit) represents the j-th time unit is interrupted; if , the consecutive bit j-th time unit is interrupted; or, if N> L, the N time units may be divided into L groups, the L group L may be a one-bit, e.g., the front set of time units, each comprising units of time; the set of time units, each comprising time unit.
[0066]
In one embodiment, among the L data bits in the first subfield, when a certain data bit (one data bit corresponds to one or more time units) or a certain segment of continuous data bits (more than two Data bit corresponds to a time unit or time unit group) When the value is the first value, it means that the corresponding time unit is disturbed in the entire frequency domain; when a certain data bit (bit) or a certain continuous data bit When the value is the second value, it means that the corresponding time unit is not disturbed in the entire frequency domain. The first value and the second value may be 0 and 1, or continuous 0 and continuous 1, or 1 and 0, or continuous 1 and continuous 0, respectively.
[0067]
For another example, in the time domain, the length of the data bit of the first subfield is a variable value L v , and the first subfield is used to indicate which time units of the N time units in the first time-frequency resource are disturbed, Among them, N and L v are both natural numbers.
[0068]
If L V = N, the first data bit in each sub-field corresponds to one bit time unit; Alternatively, if the data bits of the first sub-field of each bit corresponds to a set of time units, each unit time comprising q time units, where, q may be greater than or equal to the natural number of 2; or, if L V = mN, data bits of the first sub-field of each of m consecutive bit corresponds to one time unit; Alternatively, if the Each m consecutive bits in the data bits of the first subfield corresponds to a group of time units, and each group of time units includes q time units, where q may be a natural number greater than or equal to 2.
[0069]
In one embodiment, in the L v data bits of the first subfield , when a certain data bit (bit) or a certain continuous data bit takes the first value, it represents that the corresponding time unit is in the entire Disturbance in the frequency domain; when a certain data bit or a continuous data bit takes the second value, it means that the corresponding time unit is not disturbed in the entire frequency domain. The first value and the second value may be 0 and 1, or continuous 0 and continuous 1, or 1 and 0, or continuous 1 and continuous 0, respectively.
[0070]
In this embodiment, when the frequency domain division method of the first time-frequency resource is to use partial frequency bands in the entire activated frequency band (the activated entire frequency band is, for example, a bandwidth part (BWP)) as the division unit , The frequency domain of disturbed data transmission resources can be divided into more than two partial frequency bands. The first subfield may include at least 2 groups of data bits, each group of data bits corresponding to each partial frequency band, and in each group of data bits: more than one data bit indicates whether one time unit in the partial frequency band is Disturb, or, 1 data bit indicates whether more than 1 time unit in the partial frequency band is disturbed.
[0071]
In the following description of this embodiment, the frequency domain of the first time-frequency resource is divided into two partial frequency bands as an example for description, when the frequency domain of the first time-frequency resource is divided into three or more partial frequency bands Please refer to the following instructions.
[0072]
For example, the frequency domain of the first time-frequency resource is divided into 2 partial frequency bands, the length of the data bit of the first subfield is a fixed value L, for example 14 bits, the first subfield of length L can be divided into 2 groups The first group contains a bit, a second group comprising bits. The first group of data bits may be used to indicate the front half portion of the entire band, i.e., before the physical resource blocks (physical resource block, PRB), wherein B the INT is the total number of the entire frequency band contained PRB; a second set of bits used to indicates the second half of the entire frequency band, i.e., after a PRB.
[0073]
In the time domain, the first group of data bits may be used to indicate the front of the N time units in the time unit on which a disturbed PRB, the second group of data bits may be used to indicate time units on which N time units after a PRB disturbed.
[0074]
The following will describe the data bits of the first group above:
[0075]
If when consecutive bit indicates whether the j-th unit time usurped; as consecutive bit represents the j-th time unit is usurped; or, if the N time units into groups and with a one-bit, specifically, the front set of time units, each comprising units of time; the set of time units, each comprising units of time.
[0076]
The following will describe the data bits of the above second group:
[0077]
If when consecutive bit indicates whether the j-th unit time usurped; as consecutive bit represents the j-th time unit is usurped; if the N time units are divided into groups with a one-bit, particularly , the former set of time units, each comprising units of time; the set of time units, each comprising units of time.
[0078]
In one embodiment, in the L data bits of the first subfield, when a certain data bit (bit) or a certain segment of continuous data bits takes the first value, it means that the corresponding time unit is in the corresponding The bandwidth part is disturbed; when a certain data bit (bit) or a certain continuous data bit takes the second value, it means that the corresponding time unit is not disturbed in the corresponding bandwidth part. The first value and the second value may be 0 and 1, or continuous 0 and continuous 1, or 1 and 0, or continuous 1 and continuous 0, respectively.
[0079]
For another example, the frequency domain of the first time-frequency resource is divided into two partial frequency bands, the length of the data bit of the first subfield is a variable value L v , and the first subfield whose length is L v may be divided into 2 groups, the first comprising bits, comprising a second set of bits. The first group of data bits may be used to indicate the front half portion of the entire band, i.e., before the physical resource blocks (physical resource block, PRB); a second set of bits used to indicate the latter half of the entire band, i.e. after a PRB.
[0080]
In the time domain, the first group of data bits may be used to indicate the front of the N time units in the time unit on which a disturbed PRB, the second group of data bits may be used to indicate time units on which N time units after a PRB disturbed. Let L′ represent the data bit length of each group, where for the first group and for the second group, the following will describe any one of the data bits of the first group and the data bits of the second group:
[0081]
If L '= N, the set of data bits each bit corresponding to a unit of time; or, if the set of data bits each bit corresponding to a set of time units, each unit comprising q time units of time, wherein, q may be greater than or equal to the natural number of 2; or, if L '= mN, the set of data bits each of m consecutive bit corresponds to one time unit; Alternatively, if each of m successive bit of the set of data bits corresponding A group of time units, each group of time units contains q time units, where q can be a natural number greater than or equal to 2.
[0082]
In an embodiment, in the L v data bits of the first subfield , when a certain data bit (bit) or a certain continuous data bit takes the value of the first value, it represents that the corresponding time unit is in the corresponding When a certain data bit or a certain continuous data bit takes the second value, it means that the corresponding time unit is not disturbed in the corresponding bandwidth section. The first value and the second value may be 0 and 1, or continuous 0 and continuous 1, or 1 and 0, or continuous 1 and continuous 0, respectively.
[0083]
In this embodiment, the aforementioned time unit may include one or more than two time slots (slot), or, one or more than two non-slots (non-slot), or, one or more than two micro-slots. Time slot (mini-slot), or one or more symbols (symbol), etc.
[0084]
In this embodiment, as shown in FIG. 2, the method may further include:
[0085]
Step 202: The network device sends configuration information to the terminal device.
[0086]
In step 202, the network device may send configuration information to the terminal device through high-level signaling.
[0087]
In this embodiment, the configuration information includes at least: first configuration information. The first configuration information is used to configure the first DCI.
[0088]
In this embodiment, the configuration information may also include at least one piece of configuration information as follows:
[0089]
Second configuration information, where the second configuration information is used to configure the terminal device not to send, or to reduce power to send, or to send uplink data carried on the first time-frequency resource in a non-orthogonal multiple access manner;
[0090]
The third configuration information, where the third configuration information is used to configure non-orthogonal multiple access in a manner that is sparse code multiple access (SCMA), or multi-user shared access (MUSA) ), or, interweaver division multiple access (IDMA), or other non-orthogonal multiple access methods;
[0091]
Fourth configuration information, the fourth configuration information is used to configure non-orthogonal multiple access to distinguish user signatures as sparse codewords, or non-orthogonal codewords, or interleaver, or other To distinguish the user’s signature;
[0092]
Fifth configuration information, where the fifth configuration information is used to configure the length of the first subfield and/or the length of the first field;
[0093]
Sixth configuration information, where the sixth configuration information is used to configure the division mode of the first time-frequency resource indicated by the first subfield in the frequency domain as the entire frequency band as the division unit, or a partial frequency band as the division unit ；
[0094]
Seventh configuration information, where the seventh configuration information is used to configure the time unit of the first time-frequency resource indicated by the first subfield in the time domain as one or more than two time slots (slot), or one Or two or more non-slots (non-slot), or one or more mini-slots (mini-slot), or one or more symbols (symbol);
[0095]
Eighth configuration information, where the eighth configuration information is used to configure a period of monitoring (monitor) the first DCI for the terminal device;
[0096]
Ninth configuration information, where the ninth configuration information is used to configure a set of serving cell indexes (index) of the terminal device;
[0097]
Tenth configuration information, where the tenth configuration information is used to configure the position in the first field of the first subfield corresponding to each serving cell of the terminal device;
[0098]
Eleventh configuration information, where the eleventh configuration information is used to configure a radio network temporary identifier (RNTI) that scrambles the first DCI.
[0099]
In this embodiment, different configuration information can be sent through different high-level signaling.
[0100]
In addition, in another embodiment, the information configured by at least one of the foregoing second configuration information to the eleventh configuration information may also be preset information, and thus, there is no need to configure the terminal device through the configuration information.
[0101]
According to this embodiment, the downlink control information can be used to indicate to the terminal device which time-frequency resources used to carry uplink data are disturbed by a terminal device with a higher priority. Therefore, when the uplink data transmission of the terminal device is disturbed , Can effectively instruct the terminal equipment.
[0102]
Example 2
[0103]
The second embodiment provides a method for receiving downlink control information, which is executed by a terminal device as a receiving end.
[0104]
Fig. 3 is a schematic diagram of a method for receiving downlink control information according to Embodiment 2 of the present application. As shown in Fig. 3, the method includes:
[0105]
Step 301: The terminal device receives a first DCI that is used to indicate a disturbed first time-frequency resource for sending uplink data and is sent by a network device, where the first DCI at least includes a first DCI indicating the location of the first time-frequency resource. One field.
[0106]
According to this embodiment, the terminal device can be instructed through the downlink control information which time-frequency resources used to carry uplink data are disturbed by higher priority terminal devices. Therefore, in the case where the uplink data transmission of the terminal device is disturbed , The terminal device can be effectively indicated.
[0107]
In this embodiment, the first DCI is also used to indicate to the terminal device: not to transmit on the first time-frequency resource, or to transmit at a reduced power, or to transmit in a non-orthogonal multiple access manner. The uplink data of the first time-frequency resource.
[0108]
In this embodiment, the period for monitoring (monitor) the first DCI of the terminal device is less than or equal to the period for monitoring (monitor) the second DCI of the terminal device, wherein the second DCI is used to indicate The terminal device sends uplink data in the second time-frequency resource.
[0109]
In this embodiment, the DCI format of the first DCI is the same as or different from the DCI format of the third DCI, where the third DCI is used to indicate to the terminal device the disturbed third time-frequency resource used to transmit downlink data .
[0110]
In this embodiment, when the DCI format of the first DCI is the same as the DCI format of the third DCI, the first DCI has one more information field (information field) than the third DCI, and the information bits in the information field are used for To indicate whether the currently sent DCI is the first DCI or the third DCI.
[0111]
In this embodiment, when the DCI format of the first DCI is different from the DCI format of the third DCI, the first DCI may be a UE-specific DCI of the terminal device, or the first DCI may be a group Common (UE-group common) DCI.
[0112]
In this embodiment, the first field of the first DCI has at least one first subfield, and the first subfield corresponds to a serving cell of the terminal device.
[0113]
The length of the first subfield may be a preset length or a length configured by the network device through configuration signaling.
[0114]
In this embodiment, for the correspondence between the data bit of the first subfield and the time unit in the first time-frequency resource, please refer to the description in Embodiment 1 of the present application.
[0115]
For example, when the frequency domain division method of the disturbed first time-frequency resource is to use the entire frequency band as the division unit, more than one data bit in the first subfield indicates whether one time unit in the frequency band is disturbed, Or, one data bit in the first subfield indicates whether more than one time unit in the frequency band is disturbed.
[0116]
For another example, when the frequency domain division method of the disturbed first time-frequency resource is to use partial frequency bands in the entire frequency band as the division unit, the frequency domain of the disturbed data transmission resource is divided into more than two partial frequency bands The first subfield includes at least two sets of data bits, each set of data bits corresponds to each of the above-mentioned partial frequency bands, in each set of data bits, more than one data bit indicates whether a time unit in the partial frequency band is Disturbed, or one data bit indicates whether more than one time unit in the partial frequency band is disturbed.
[0117]
In this embodiment, as shown in FIG. 3, the method further includes:
[0118]
Step 302: The terminal device receives at least the configuration information sent by the network device for configuring the first DCI.
[0119]
In this embodiment, the terminal device may receive the configuration information sent by the network device through high-level signaling.
[0120]
In this embodiment, the configuration information includes at least: first configuration information. The first configuration information is used to configure the first DCI.
[0121]
In this embodiment, the configuration information may also include at least one piece of configuration information as follows:
[0122]
Second configuration information, where the second configuration information is used to configure the terminal device not to send, or to reduce power to send, or to send uplink data carried on the first time-frequency resource in a non-orthogonal multiple access manner;
[0123]
The third configuration information, where the third configuration information is used to configure non-orthogonal multiple access in a manner that is sparse code multiple access (SCMA), or multi-user shared access (MUSA) ), or, interweaver division multiple access (IDMA), or other non-orthogonal multiple access methods;
[0124]
Fourth configuration information, the fourth configuration information is used to configure non-orthogonal multiple access to distinguish user signatures as sparse codewords, or non-orthogonal codewords, or interleaver, or other To distinguish the user’s signature;
[0125]
Fifth configuration information, where the fifth configuration information is used to configure the length of the first subfield and/or the length of the first field;
[0126]
Sixth configuration information, where the sixth configuration information is used to configure the division mode of the first time-frequency resource indicated by the first subfield in the frequency domain as the entire frequency band as the division unit, or a partial frequency band as the division unit ；
[0127]
Seventh configuration information, where the seventh configuration information is used to configure the time unit of the first time-frequency resource indicated by the first subfield in the time domain as one or more than two time slots (slot), or one Or two or more non-slots (non-slot), or one or more mini-slots (mini-slot), or one or more symbols (symbol);
[0128]
Eighth configuration information, where the eighth configuration information is used to configure a period of monitoring (monitor) the first DCI for the terminal device;
[0129]
Ninth configuration information, where the ninth configuration information is used to configure a set of serving cell indexes (index) of the terminal device;
[0130]
Tenth configuration information, where the tenth configuration information is used to configure the position in the first field of the first subfield corresponding to each serving cell of the terminal device;
[0131]
Eleventh configuration information, where the eleventh configuration information is used to configure a radio network temporary identifier (RNTI) that scrambles the first DCI.
[0132]
In this embodiment, different configuration information can be sent through different high-level signaling.
[0133]
In addition, in another embodiment, the information configured by at least one of the foregoing second configuration information to the eleventh configuration information may also be preset information, and thus, there is no need to configure the terminal device through the configuration information.
[0134]
As shown in Figure 3, the method may further include:
[0135]
Step 303: The first time-frequency resource and the second time-frequency resource used for sending uplink data of the terminal device at least partially overlap, and the terminal device does not transmit at least on the overlapping time-frequency resource, or transmits at a reduced power Or, send uplink data in non-orthogonal multiple access mode.
[0136]
In step 303 of this embodiment, in the case of the above-mentioned overlapping time-frequency resources:
[0137]
In an embodiment, the terminal device may not transmit on the overlapping time-frequency resources, or transmit at a reduced power, or transmit uplink data in a non-orthogonal multiple access manner;
[0138]
In another embodiment, the terminal device does not transmit on the second time-frequency resource, or transmits at a reduced power, or transmits uplink data in a non-orthogonal multiple access mode, that is, the terminal device does not only transmit data when overlapped. The priority is lowered on the frequency resource, but the priority is lowered on the entire second time-frequency resource. This situation is applicable when the terminal device has not yet started to send data on the second time-frequency resource when the first DCI is received. ；
[0139]
In another embodiment, the terminal device does not transmit on the second time-frequency resource after receiving the first DCI, or transmits at reduced power, or transmits uplink data in a non-orthogonal multiple access mode. This situation applies Therefore, before receiving the first DCI, the terminal device has already sent data on the second time-frequency resource.
[0140]
For example, the terminal device may perform blind detection, and after detecting the received first DCI, determine whether the second time-frequency resource used for sending uplink data and the first time-frequency resource at least partially overlap. Wherein, the first time-frequency resource may be N time units after n+N3 in the time domain, where n is the time unit when the terminal device detects the first DCI, and N3 is the terminal device demodulating the first DCI. DCI, and prepare to switch to the unit of time required for the lower priority process.
[0141]
When the terminal device determines that there is overlap, at least on the overlapped time-frequency resources, the terminal device does not transmit, or transmits at reduced power, or transmits uplink data in a non-orthogonal multiple access manner.
[0142]
When the terminal device determines that there is no overlap, the terminal device performs normal uplink data transmission on the second time-frequency resource.
[0143]
According to this embodiment, the downlink control information can be used to indicate to the terminal device which time-frequency resources used to carry uplink data are disturbed by a terminal device with a higher priority. Therefore, when the uplink data transmission of the terminal device is disturbed , Can effectively instruct the terminal equipment.
[0144]
Example 3
[0145]
The third embodiment provides a device for sending downlink control information (DCI). 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 content will not be repeated.
[0146]
FIG. 4 is a schematic diagram of a device for transmitting downlink control information (DCI) of the third embodiment. As shown in FIG. 4, the apparatus 400 includes: a first sending unit 401. The first sending unit 401 is configured to send a first DCI used to indicate a first time-frequency resource used to send uplink data that is disturbed to a terminal device, where the first DCI at least includes information indicating the location of the first time-frequency resource The first field.
[0147]
In this embodiment, the first DCI is also used to instruct the terminal equipment: not to transmit on the first time-frequency resource, or to transmit at a reduced power, or to transmit in a non-orthogonal multiple access manner to be carried on the first Uplink data of time-frequency resources.
[0148]
In this embodiment, the period of the device configured for the terminal device to monitor (monitor) the first DCI is less than or equal to the period of the device configured for the terminal device to monitor (monitor) the second The period of the DCI, where the second DCI is used to instruct the terminal device to send uplink data in the second time-frequency resource.
[0149]
In this embodiment, the DCI format of the first DCI is the same as or different from the DCI format of the third DCI, where the third DCI is used to indicate to the terminal device the interrupted first DCI used to transmit downlink data. Three-time frequency resources.
[0150]
In this embodiment, when the DCI format of the first DCI is the same as the DCI format of the third DCI, the first DCI has one more information field (information field) than the third DCI, and the information field The information bit in is used to indicate whether the currently sent DCI is the first DCI or the third DCI.
Claims
[Claim 1]
A device for sending downlink control information (DCI) is set in a network device, and the device includes: a first sending unit, which is used to send a first time frequency for sending uplink data for indicating to be disturbed to a terminal device The first DCI of the resource, where the first DCI at least includes a first field indicating the location of the first time-frequency resource.
[Claim 2]
The apparatus according to claim 1, wherein the first DCI is further used to instruct the terminal equipment to: not transmit on the first time-frequency resource, or transmit at a lower power, or use non-orthogonal multiple Sending the uplink data carried on the first time-frequency resource in an address mode.
[Claim 3]
The apparatus according to any one of claims 1, wherein the period configured by the apparatus for the terminal device to monitor (monitor) the first DCI is less than or equal to that configured by the apparatus for the terminal device A period for monitoring (monitor) the second DCI, where the second DCI is used to instruct the terminal device to send uplink data in the second time-frequency resource.
[Claim 4]
The apparatus according to any one of claims 1, wherein the DCI format of the first DCI is the same as or different from the DCI format of the third DCI, wherein the third DCI is used to indicate to the terminal device that the Disturbed third time-frequency resource used to transmit downlink data.
[Claim 5]
The apparatus of claim 4, wherein when the DCI format of the first DCI is the same as the DCI format of the third DCI, the first DCI has one more information field (information field) than the third DCI , The information bit in the information field is used to indicate whether the currently sent DCI is the first DCI or the third DCI.
[Claim 6]
5. The apparatus according to claim 4, wherein when the DCI format of the first DCI is different from the DCI format of the third DCI, the first DCI is a UE-specific DCI of the terminal device Or, the first DCI is a group common (UE-group common) DCI.
[Claim 7]
5. The apparatus of claim 1, wherein the first field has at least one first subfield, and the first subfield corresponds to a serving cell of the terminal device.
[Claim 8]
7. The apparatus according to claim 7, wherein when the frequency domain division method of the first time-frequency resource that is disturbed is to use the entire frequency band as the division unit, more than one data bit in the first subfield indicates the Whether one time unit in the frequency band is disturbed, or one data bit of the first subfield indicates whether more than one time unit in the frequency band is disturbed.
[Claim 9]
The apparatus according to claim 1, wherein the apparatus further comprises: a second sending unit, which sends configuration information at least for configuring the first DCI to the terminal device.
[Claim 10]
The apparatus according to claim 9, wherein the configuration information is further used to configure at least one of the following: The configuration information is used to configure the terminal device not to transmit, or to reduce power to transmit, or to use non-orthogonal The uplink data carried on the first time-frequency resource is sent in a multiple access mode; the configuration information is used to configure non-orthogonal multiple access in a sparse code multiple access (SCMA), or multiple User shared multiple access (multi user shared access, MUSA), or interweaver division multiple access (IDMA), or other non-orthogonal multiple access methods; the configuration information is used to configure non-orthogonal multiple access The signature used to distinguish users in the address is a sparse codeword, or a non-orthogonal codeword, or an interleaver, or other signatures used to distinguish users; the configuration information is used to configure the The length of the first subfield and/or the length of the first field; the configuration information is used to configure the division mode of the first time-frequency resource indicated by the first subfield in the frequency domain to use the entire frequency band as the division unit, Alternatively, a partial frequency band is used as a division unit; the configuration information is used to configure the time unit of the first time-frequency resource indicated by the first subfield in the time domain as one or more than two time slots, or , One or more than two non-slots (non-slot), or one or more than two mini-slots (mini-slot), or one or more than two symbols (symbol); the configuration information The period for configuring the terminal device to monitor (monitor) the first DCI; the configuration information is used to configure the set of serving cell indexes (index) of the terminal device; the configuration information is used to configure the terminal device The position of the first subfield corresponding to each serving cell in the first field; the configuration information is used to configure a radio network temporary identifier (RNTI) that scrambles the first DCI.
[Claim 11]
A device for receiving downlink control information (DCI) is set in a terminal device, and the receiving device includes: a first receiving unit, which is used to receive a first receiving unit for sending uplink data that is sent by a network device and used to indicate interruption; The first DCI of the time-frequency resource, where the first DCI at least includes a first field indicating the location of the first time-frequency resource.
[Claim 12]
The apparatus according to claim 11, wherein the first DCI is further used to instruct the terminal device: not to transmit on the first time-frequency resource, or to transmit at a lower power, or to use non-orthogonal multiple Sending the uplink data carried on the first time-frequency resource in an address mode.
[Claim 13]
The apparatus according to claim 11, wherein the DCI format of the first DCI is the same as or different from the DCI format of the third DCI, and wherein the third DCI is used to indicate to the terminal device that it is disturbed The third time-frequency resource for transmitting downlink data.
[Claim 14]
The apparatus according to claim 13, wherein when the DCI format of the first DCI is different from the DCI format of the third DCI, the first DCI is a UE-specific DCI of the terminal device Or, the first DCI is a group common (UE-group common) DCI.
[Claim 15]
The apparatus according to claim 11, wherein the first field has at least one first subfield, and the first subfield corresponds to a serving cell of the terminal device.
[Claim 16]
The apparatus according to claim 15, wherein, when the frequency domain division method of the first time-frequency resource that is disturbed is to use the entire frequency band as the division unit, more than one data bit in the first subfield indicates the Whether one time unit in the frequency band is disturbed, or one data bit of the first subfield indicates whether more than one time unit in the frequency band is disturbed.
[Claim 17]
The apparatus according to claim 11, wherein the apparatus further comprises: a second receiving unit configured to receive configuration information sent by the network device at least for configuring the first DCI.
[Claim 18]
The apparatus according to claim 17, wherein the configuration information is further used to configure at least one of the following: the configuration information is used to configure the terminal device not to transmit, or to reduce power to transmit, or to use non-orthogonal The uplink data carried on the first time-frequency resource is sent in a multiple access mode; the configuration information is used to configure non-orthogonal multiple access in a sparse code multiple access (SCMA), or multiple User shared multiple access (multi user shared access, MUSA), or interweaver division multiple access (interweaver division multiple access, IDMA); the configuration information is used to configure non-orthogonal multiple access to distinguish user signatures as sparse codes Word, or non-orthogonal code word, or interleaver; the configuration information is used to configure the length of the first subfield and/or the length of the first field; the configuration information is used to configure the first subfield The first time-frequency resource indicated by a subfield is divided in the frequency domain by using the entire frequency band as the division unit or part of the frequency band as the division unit; the configuration information is used to configure the first time-frequency resource indicated by the first subfield. The time unit of a time-frequency resource in the time domain is one or more than two time slots (slot), or one or more than two non-slots (non-slot), or one or more micro Time slot (mini-slot), or one or more than two symbols; the configuration information is used to configure the terminal device to monitor (monitor) the period of the first DCI; the configuration information is used to configure A collection of the serving cell index (index) of the terminal device; the configuration information is used to configure the position in the first field of the first subfield corresponding to each serving cell of the terminal device; the configuration information is used The radio network temporary identity (RNTI) for scrambling the first DCI is configured.
[Claim 19]
The apparatus according to claim 11, wherein the first time-frequency resource and the second time-frequency resource for sending uplink data of the terminal equipment at least partially overlap, and the apparatus further comprises: a first transmission control unit , Which is used to control the device not to transmit on at least overlapping time-frequency resources, or to reduce power to transmit, or to transmit uplink data in a non-orthogonal multiple access manner.
[Claim 20]
A communication system, the communication system having network equipment and terminal equipment, wherein the network equipment has the downlink control information (DCI) sending device according to any one of claims 1-10, the network equipment A receiving device having the downlink control information (DCI) according to any one of claims 11-19.