Title of Invention: Method and device for transmitting and receiving uplink signals
technical field
[0001]
The embodiments of the present application relate to the field of communication technologies.
Background technique
[0002]
In recent years, with the rapid growth of various data applications and services based on the mobile communication network, the terminal equipment served by the mobile communication network has also expanded from the traditional human-based smartphone terminal to more machine-based terminals. terminal. In order to adapt to such a changing trend, future mobile communication networks need to provide more flexible and diverse services to meet the needs of different terminal devices and services.
[0003]
In addition to the traditional enhanced Mobile Broadband (eMBB, enhanced Mobile Broadband) services, the fifth generation (5G) mobile communication system also supports Massive Machine Type Communications (mMTC, Massive Machine Type Communications) services and ultra-reliable and low-latency communications ( URLLC, Ultra-Reliable and Low Latency Communications) business.
[0004]
The URLLC service has some key indicators. For example, for the URLLC service, the target of the user plane delay should be 0.5ms for uplink and 0.5ms for downlink. The overall URLLC reliability requirement for one transmission of a packet is to achieve an error rate of 1*10 -5 for 32 bytes , with a user plane delay of 1ms.
[0005]
It is a common example to perform both the URLLC service and the eMBB service in a terminal device, for example, the terminal device performs a file download service (eMBB service) and a real-time online game (URLLC service) at the same time. Since the URLLC service has very high latency requirements, if an eMBB service signal is being sent when a signal related to the URLLC service needs to be sent, in order to meet the latency requirements of the URLLC service, it is often impossible to wait until the eMBB service signal is transmitted before sending this signal. Signals related to URLLC services.
[0006]
It should be noted that the above description of the technical background is only for the convenience of clearly and completely describing the technical solutions of the present application and facilitating the understanding of those skilled in the art. It should not be assumed that the above-mentioned technical solutions are known to those skilled in the art simply because these solutions are described in the background section of this application.
[0007]
SUMMARY OF THE INVENTION
[0008]
However, the inventors found that, in the case of conflict between the uplink signal (or information) carrying eMBB service and the uplink signal (or information) carrying URLLC service, the requirement of signal transmission in some scenarios cannot be met.
[0009]
To address at least one of the above problems, embodiments of the present application provide a method and apparatus for sending and receiving uplink signals.
[0010]
According to an aspect of the embodiments of the present application, a method for sending an uplink signal is provided, including:
[0011]
The terminal device instructs the physical layer to send the first uplink signal on the first time-frequency resource from the medium access control layer;
[0012]
The terminal device determines at the medium access control layer that the second time-frequency resource and the first time-frequency resource at least partially overlap in the time domain or in the time-frequency domain; and
[0013]
The terminal device compares the first information related to the first uplink signal with the second information related to the second time-frequency resource at the medium access control layer.
[0014]
According to yet another aspect of the embodiments of the present application, an apparatus for sending an uplink signal is provided, including:
[0015]
an instructing unit, which instructs the physical layer to send the first uplink signal at the first time-frequency resource from the medium access control layer;
[0016]
a determining unit, which determines at the medium access control layer that the second time-frequency resource and the first time-frequency resource at least partially overlap in the time domain or the time-frequency domain; and
[0017]
A comparison unit, which compares the first information related to the first uplink signal and the second information related to the second time-frequency resource at the medium access control layer.
[0018]
According to yet another aspect of the embodiments of the present application, a method for sending an uplink signal is provided, including:
[0019]
The terminal device determines at the medium access control layer that the first time-frequency resource and the second time-frequency resource at least partially overlap in the time domain or in the time-frequency domain;
[0020]
The terminal device compares, at the medium access control layer, first information related to the first time-frequency resource and second information related to the second time-frequency resource; and
[0021]
The terminal device instructs the physical layer from the medium access control layer to send a first uplink signal related to the first information on the first time-frequency resource and/or send a signal related to the first information on the second time-frequency resource. the second uplink signal related to the second information, or instruct to send the third uplink signal related to the first information and the second information on the first time-frequency resource or the second time-frequency resource.
[0022]
According to yet another aspect of the embodiments of the present application, an apparatus for sending an uplink signal is provided, including:
[0023]
a determining unit, which determines at the medium access control layer that the first time-frequency resource and the second time-frequency resource at least partially overlap in the time domain or in the time-frequency domain;
[0024]
a comparing unit that compares, at the medium access control layer, first information related to the first time-frequency resource and second information related to the second time-frequency resource; and
[0025]
an instructing unit, which instructs, from the medium access control layer to the physical layer, to send a first uplink signal related to the first information on the first time-frequency resource and/or send a signal related to the first information on the second time-frequency resource. the second uplink signal related to the second information, or instruct to send the third uplink signal related to the first information and the second information on the first time-frequency resource or the second time-frequency resource.
[0026]
According to yet another aspect of the embodiments of the present application, a method for receiving an uplink signal is provided, including:
[0027]
The network device sends configuration information or indication information to the terminal device, where the configuration information or indication information is at least used by the terminal device to compare the first information related to the first uplink signal and the second information related to the second time-frequency resource , or compare the first information related to the first time-frequency resource with the second information related to the second time-frequency resource; and
[0028]
The network device receives the first uplink signal and/or the second uplink signal related to the second information sent by the terminal device, or the third uplink signal related to the first information and the second information. up signal.
[0029]
According to yet another aspect of the embodiments of the present application, an apparatus for receiving an uplink signal is provided, including:
[0030]
A sending unit, which sends configuration information or indication information to the terminal device, where the configuration information or indication information is at least used by the terminal device to compare the first information related to the first uplink signal and the first information related to the second time-frequency resource. two information, or comparing the first information related to the first time-frequency resource with the second information related to the second time-frequency resource; and
[0031]
a receiving unit, which receives the first uplink signal and/or the second uplink signal related to the second information sent by the terminal device, or the third uplink signal related to the first information and the second information up signal.
[0032]
One of the beneficial effects of the embodiments of the present application is that: the medium access control (MAC, Media Access Control) layer of the terminal device compares the first information related to the first uplink signal with the second information related to the second time-frequency resource, or The first information related to the first time-frequency resource is compared with the second information related to the second time-frequency resource. In this way, conflicts between signals carrying or indicating different services can be resolved, thereby helping to meet the time delay requirement of the services.
[0033]
With reference to the following description and drawings, specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the present application may be employed. It should be understood that the embodiments of the present application are not thereby limited in scope. Embodiments of the present application include many changes, modifications and equivalents within the spirit and scope of the appended claims.
[0034]
Features described and/or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, in combination with, or instead of features in other embodiments .
[0035]
It should be emphasized that the term "comprising/comprising" when used herein refers to the presence of a feature, integer, step or component, but does not exclude the presence or addition of one or more other features, integers, steps or components.
Description of drawings
[0036]
Elements and features described in one figure or embodiment of the present application may be combined with elements and features shown in one or more other figures or embodiments. Furthermore, in the figures, like reference numerals refer to corresponding parts throughout the several figures, and may be used to designate corresponding parts that are used in more than one embodiment.
[0037]
1 is a schematic diagram of a communication system according to an embodiment of the present application;
[0038]
2 is a schematic diagram of a method for sending an uplink signal according to an embodiment of the present application;
[0039]
3 is another schematic diagram of a method for sending an uplink signal according to an embodiment of the present application;
[0040]
4 is an example diagram of a conflict between a first uplink signal and a second uplink signal according to an embodiment of the present application;
[0041]
5 is a schematic diagram of a method for receiving an uplink signal according to an embodiment of the present application;
[0042]
6 is a schematic diagram of an apparatus for sending an uplink signal according to an embodiment of the present application;
[0043]
7 is another schematic diagram of an apparatus for sending an uplink signal according to an embodiment of the present application;
[0044]
8 is a schematic diagram of an apparatus for receiving an uplink signal according to an embodiment of the present application;
[0045]
9 is a schematic diagram of a network device according to an embodiment of the present application;
[0046]
FIG. 10 is a schematic diagram of a terminal device according to an embodiment of the present application.
Detailed ways
[0047]
The foregoing and other features of the present application will become apparent from the following description with reference to the accompanying drawings. In the specification and drawings, specific embodiments of the present application are specifically disclosed, which are indicative of some embodiments in which the principles of the present application may be employed, it being understood that the present application is not limited to the described embodiments, on the contrary, the present The application includes all modifications, variations and equivalents falling within the scope of the appended claims.
[0048]
In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements in terms of appellation, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be used by these terms restricted. The term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "comprising", "including", "having", etc. refer to the presence of a stated feature, element, element or component, but do not preclude the presence or addition of at least one other feature, element, element or component.
[0049]
In the embodiments of the present application, the singular forms "a", "the", etc. include the plural forms, and should be broadly understood as "a" or "a class" rather than being limited to the meaning of "an"; in addition, the term "the" "" is understood to include both the singular and the plural, unless the context clearly dictates otherwise. In addition, the term "based on" should be understood as "at least in part based on..." and the term "based on" should be understood as "based at least in part on..." unless the context clearly dictates otherwise.
[0050]
In the embodiments of the present application, the term "communication network" or "wireless communication network" may refer to a network conforming to any of the following communication standards, such as Long Term Evolution (LTE, Long Term Evolution), Long Term Evolution enhanced (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed ​​Packet Access (HSPA, High-Speed ​​Packet Access) and so on.
[0051]
Moreover, the communication between devices in the communication system can be carried out according to communication protocols at any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G , New Radio (NR, New Radio), etc., and/or other communication protocols currently known or to be developed in the future.
[0052]
In this embodiment 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 devices may include but are not limited to the following devices: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobility management entity (MME, Mobile Management Entity), gateway, server, Radio Network Controller (RNC, Radio Network Controller), Base Station Controller (BSC, Base Station Controller) and so on.
[0053]
The base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), and 5G base station (gNB), etc., and may also include a remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay) or low power node (eg femeto, pico, etc.). And the term "base station" may include some or all of their functions, each base station may provide communication coverage for a particular 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.
[0054]
In the embodiments of the present application, the term "User Equipment" (UE, User Equipment) or "Terminal Equipment" (TE, Terminal Equipment or Terminal Device), for example, refers to a device that accesses a communication network through a network device and receives network services. A terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, and so on.
[0055]
Wherein, the terminal device may include but is not limited to the following devices: Cellular Phone (Cellular Phone), Personal Digital Assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication device, handheld device, machine type communication device, laptop computer, Cordless phones, smartphones, smart watches, digital cameras, and more.
[0056]
For another example, in scenarios such as the Internet of Things (IoT, Internet of Things), the terminal device may also be a machine or device that performs monitoring or measurement, such as but not limited to: Machine Type Communication (MTC, Machine Type Communication) terminals, Vehicle communication terminal, device to device (D2D, Device to Device) terminal, machine to machine (M2M, Machine to Machine) terminal, etc.
[0057]
In addition, the term "network side" or "network device side" refers to one side of the network, which may be a certain base station, and may also include at least one network device as described above. The term "user side" or "terminal side" or "terminal device side" refers to the side of the user or terminal, which may be a certain UE, or may include at least one terminal device as above.
[0058]
The following describes the scenarios of the embodiments of the present application by using examples, and uses uplink service transmission for description, but the present application is not limited to this, and may also be service transmission on side links.
[0059]
FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, which schematically illustrates a situation in which a terminal device and a network device are taken as an example. As shown in FIG. 1 , a communication system 100 may include a network device 101 and terminal devices 102 and 103 . For simplicity, FIG. 1 only takes two terminal devices and one network device as an example for description, but the embodiment of the present application is not limited to this.
[0060]
In this embodiment of the present application, the network device 101 and the terminal devices 102 and 103 may perform transmission of existing services or services that can be implemented in the future. For example, these services may include, but are not limited to: Enhanced Mobile Broadband (eMBB), Massive Machine Type Communication (mMTC), Highly Reliable Low Latency Communication (URLLC), and Vehicle-to-Network (V2X) communication, among others.
[0061]
In the uplink transmission of Rel-15, when the transmission occasion (transmission occasion) of the uplink scheduling request (SR, scheduling request) overlaps with the resources of the uplink shared channel (UL-SCH), the MAC layer of the terminal device does not transmit the SR. When the PUSCH resource (eg, duration) of the uplink configured grant overlaps with the PUSCH resource (eg, duration) of the uplink grant in dynamic scheduling or RAR, data will not be sent according to the configured grant. Currently, there is no distinction as to what kind of service the uplink transmission is related to, for example, the URLLC service or the eMBB service.
[0062]
In addition, Rel-15 only standardized the conflict resolution for the URLLC downlink data channel and the eMBB downlink data channel. The current standardization of Rel-16 is discussing how to handle conflicts between URLLC services and other transports related to eMBB services. Here, other transmissions include transmission in an uplink data channel, transmission in an uplink control channel, transmission of uplink control information, and the like.
[0063]
In the following description, the terms "uplink control signal" and "uplink control information (UCI, Uplink Control Information)" or "physical uplink control channel (PUCCH, Physical Uplink Control Channel)" can be used interchangeably without causing confusion. In other words, the terms "uplink data signal" and "uplink data information" or "Physical Uplink Shared Channel (PUSCH, Physical Uplink Shared Channel)" can be interchanged;
[0064]
The terms "downlink control signal" and "downlink control information (DCI, Downlink Control Information)" or "physical downlink control channel (PDCCH, Physical Downlink Control Channel)" are interchangeable, and the terms "downlink data signal" and "downlink data information" Or "Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel)" can be interchanged.
[0065]
In addition, sending or receiving PUSCH can be understood as sending or receiving uplink data carried by PUSCH, and sending or receiving PUCCH can be understood as sending or receiving uplink information carried by PUCCH; uplink signals can include uplink data signals and/or uplink control signals and /or uplink reference signal, etc., may also be referred to as uplink transmission or uplink channel; the content carried or indicated by the signal or channel may also be referred to as service. In addition, the term "sending a signal on a resource" may be understood as "sending a signal on a resource" or "sending a signal in a resource", and may also be understood as "sending a signal using a resource" or "sending a signal according to a resource".
[0066]
Embodiments of the first aspect
[0067]
An embodiment of the present application provides a method for sending an uplink signal, which is described from the side of a terminal device. FIG. 2 is a schematic diagram of a method for sending an uplink signal according to an embodiment of the present application. As shown in FIG. 2 , the method includes:
[0068]
201. A terminal device instructs a physical layer (PHY) from a medium access control (MAC) layer to send a first uplink signal on a first time-frequency resource;
[0069]
202, the terminal device determines at the MAC layer that the second time-frequency resource and the first time-frequency resource at least partially overlap (overlap) in the time domain or in the time-frequency domain; and
[0070]
203. The terminal device compares, at the MAC layer, first information related to the first uplink signal and second information related to the second time-frequency resource.
[0071]
In this embodiment of the present application, the MAC layer has instructed the physical layer to send the first uplink signal on the first time-frequency resource, or the MAC layer has assembled (or obtained) the MAC PDU. When the second time-frequency resource conflicts with the first time-frequency resource, compare the first information and the second information; and determine whether to instruct the physical layer to send the second uplink signal related to the second information according to the comparison result. The conflict may be that the second time-frequency resource and the first time-frequency resource at least partially overlap (overlap) in the time domain or in the time-frequency domain.
[0072]
It should be noted that the above FIG. 2 only schematically illustrates the embodiment of the present application, but the present application is not limited thereto. For example, the execution order of each operation can be adjusted appropriately, and other operations can be added or some of the operations can be reduced. Those skilled in the art can make appropriate modifications according to the above content, and are not limited to the description of the above-mentioned FIG. 2 .
[0073]
In some embodiments, the first uplink signal or the second uplink signal includes at least one of the following: Physical Random Access Channel (PRACH), Physical Uplink Control Channel (PUCCH), Physical Uplink Shared Channel (PUSCH), etc.; but the present application Not limited to this.
[0074]
In some embodiments, the first information or the second information includes at least one of the following: a random access preamble (Preamble), a scheduling request (SR), a protocol data unit (PDU) of a medium access control (MAC), a logical channel data, uplink shared channel (UL-SCH) resources, channel state information (CSI), etc.; but the present application is not limited to this.
[0075]
In some embodiments, the first time-frequency resource or the second time-frequency resource includes at least one of the following: time and/or frequency resources for a physical random access channel (PRACH), a physical uplink control channel (PUCCH) time and/or frequency resources, time and/or frequency resources for physical uplink shared channel (PUSCH), etc.
[0076]
For example, the first information is a random access preamble (preamble), the first uplink signal may be the PRACH channel carrying the preamble, and the first time-frequency resource may be the time-frequency resource of the PRACH; the first information is SR, the first uplink signal The signal may be the PUCCH channel or PUSCH channel that carries the SR, and the first time-frequency resource may be the time-frequency resource of the PUCCH or the time-frequency resource of the PUSCH; the first information is the data in the MAC PDU or the logical channel or the UL-SCH resource, the first uplink signal can be the PUSCH channel that carries the data in the MAC PDU or the logical channel or the UL-SCH resource, and the first time-frequency resource can be the time-frequency resource of the PUSCH; the first information is CSI, such as a CSI report , the first uplink signal may be the PUSCH channel carrying the CSI report, the corresponding MAC layer data is padding bits, and the first time-frequency resource may be the time-frequency resource of the PUSCH.
[0077]
The above description takes the first information, the first uplink signal, and the first time-frequency resource as examples. For the second information, the second uplink signal, and the second time-frequency resource, refer to the first information, the first uplink signal, and the first time-frequency resource. The description of the frequency resources is not repeated here.
[0078]
Taking the second information as the MAC PDU or data in the logical channel or the UL-SCH resource or CSI as an example, when the terminal device performs the comparison, the MAC PDU corresponding to the second information may or may not have been generated yet. MAC PDU corresponding to the second information. This application does not limit the specific structure or form of the second information. Here, generate (generate) may also be assemble (assemble) or obtain (obtain), and may also be triggering a retransmission (retransmission) or generating a retransmission or instructing the physical layer to retransmit a transport block (Transport Block, TB) , this application does not limit.
[0079]
In some embodiments, the presence of the second information at the MAC layer may include the following conditions: the MAC layer receives or has or is configured with an uplink grant (UL grant), and generates a MAC PDU or is about to generate a MAC PDU according to the UL grant .
[0080]
In some embodiments, the occurrence of the second information at the MAC layer may include the following situation: the MAC layer triggers the SR, for example, the MAC layer triggers the SR because a buffer status report (BSR, Buffer Status Report) is triggered.
[0081]
In some embodiments, the presence of the second information at the MAC layer may include a situation in which a random access preamble is to be sent due to a specific condition or event that initiates a random access procedure at the MAC layer.
[0082]
In some embodiments, after the comparison is performed, the terminal device at least instructs the physical layer from the MAC layer to send a second uplink signal related to the second information on the second time-frequency resource. In this article, "the terminal equipment indicates from the MAC layer to the physical layer..." can be understood as "the MAC layer of the terminal equipment indicates to the physical layer..."; "the terminal equipment sends at the physical layer..." can be understood as "the physical layer of the terminal equipment sends ..."; "The terminal device determines at the MAC layer..." can be understood as "The MAC layer of the terminal device determines...". The MAC layer of the terminal device may be one or more than one MAC entity, or may be a MAC logic function.
[0083]
Taking the second information in the comparison process as MAC PDU or data in the logical channel or UL-SCH resource or CSI as an example, for example, after the comparison, the second information is prior to the first information (the content of the priority order or priority will be described later. ). In this case, if the MAC PDU corresponding to the second information has not been generated, the MAC layer of the terminal device continues to generate the MAC PDU, and instructs the physical layer to send the second uplink signal on the second time-frequency resource; After the MAC PDU has been generated, the MAC layer of the terminal device instructs the physical layer to send the second uplink signal on the second time-frequency resource.
[0084]
In some embodiments, the physical layer of the terminal device sends the second uplink signal on the second time-frequency resource.
[0085]
In some embodiments, after the comparison is performed, the terminal device does not instruct the physical layer from the MAC layer to send the second uplink signal related to the second information on the second time-frequency resource.
[0086]
For example, after the comparison, the first information takes precedence over the second information, and the MAC layer may not instruct the physical layer to send the second uplink signal related to the second information on the second time-frequency resource. In this case, the MAC layer may store the second information in the logical channel or in the hybrid automatic repeat request (HARQ, hybrid automatic repeat request) buffer (buffer), or discard the second information, which is not limited in this application .
[0087]
In some embodiments, the physical layer of the terminal device sends the first uplink signal on the first time-frequency resource.
[0088]
In some embodiments, the terminal device indicates information related to the second uplink signal or the second information or the priority of the second time-frequency resource to the physical layer at the MAC layer.
[0089]
For example, a value indicating the priority of the second information, such as a negative integer, 0, or a positive integer;
[0090]
For another example, it may be indicated that the second information takes precedence over the first information or the first uplink signal, or it may be indicated that the second information can preempt the transmission of the first information or the first uplink signal, etc., for example, a 1-bit (bit) identifier is used. (flag) to indicate, for example, when the flag appears or when the flag value is 1, it indicates that the second information has priority over the first information or the first uplink signal, when the flag does not appear or when the flag value is 1 When 0, it indicates that the second information does not take precedence over the first information or the first uplink signal;
[0091]
For another example, it may indicate whether the second information only includes padding bits, for example, whether the UL-SCH only includes padding bits of the MAC layer, and so on. The communication standard may predefine that when padding bits are included, the priority of the second information is lower.
[0092]
The priority of the second time-frequency resource (may be referred to as the third priority) may be determined by the MAC layer according to the information carried or to be carried by the time-frequency resource, for example, determined according to the second information carried or to be carried by the second time-frequency resource The priority value of the second time-frequency resource or whether the second time-frequency resource has priority over the first time-frequency resource, etc.; that is, the priority of the time-frequency resource here is determined by the MAC layer, and then notified by the MAC layer to the physical layer.
[0093]
The above description takes the use of priority or priority order as an example in the comparison process, but the present application is not limited to this, and the priority or priority order may not be used in the comparison process.
[0094]
FIG. 3 is another schematic diagram of a method for sending an uplink signal according to an embodiment of the present application. As shown in FIG. 3 , the method includes:
[0095]
301. The terminal device determines at the MAC layer that the first time-frequency resource and the second time-frequency resource at least partially overlap (overlap) in the time domain or in the time-frequency domain;
[0096]
302. The terminal device compares, at the MAC layer, first information related to the first time-frequency resource and second information related to the second time-frequency resource; and
[0097]
303. The terminal device instructs, from the MAC layer to the physical layer, to send a first uplink signal related to the first information on the first time-frequency resource and/or send on the second time-frequency resource a second uplink signal related to the second information, or instructing to send a third uplink signal related to the first information and the second information on the first time-frequency resource or the second time-frequency resource .
[0098]
In this embodiment of the present application, when the first information and the second information (may generate a MAC PDU or may not generate a MAC PDU) appear at the MAC layer and the corresponding first time-frequency resource and the second time-frequency resource conflict , compare the first information and the second information; and determine whether to send the first uplink signal related to the first information or the second uplink signal related to the second information, or to send the first information and the second uplink signal according to the comparison result. The second information is related to the third upstream signal. The conflict may be that the first time-frequency resource and the second time-frequency resource at least partially overlap (overlap) in the time domain or in the time-frequency domain.
[0099]
It should be noted that the above FIG. 3 only schematically illustrates the embodiment of the present application, but the present application is not limited thereto. For example, the execution order of each operation can be adjusted appropriately, and other operations can be added or some of the operations can be reduced. Those skilled in the art can make appropriate modifications according to the above content, and are not limited to the description of the above-mentioned FIG. 3 .
[0100]
Taking the second information as the MAC PDU or the data in the logical channel or the UL-SCH resource or CSI as an example, the terminal device may have generated the MAC PDU corresponding to the first information or the second information when performing the comparison. The MAC PDU corresponding to the first information or the second information may not be generated yet, and this application does not limit the specific structure or form of the first information or the second information. Here, generate (generate) may also be assemble (assemble) or obtain (obtain), and may also be triggering a retransmission (retransmission) or generating a retransmission or instructing the physical layer to retransmit a transport block (Transport Block, TB) , this application does not limit.
[0101]
In some embodiments, the presence of the first information and/or the second information at the MAC layer may include the following conditions: the MAC layer receives or has or is configured with an uplink grant (UL grant), and generates a MAC according to the UL grant PDU or MAC PDU will be generated.
[0102]
In some embodiments, the occurrence of the first information and/or the second information at the MAC layer may include the following situation: an SR is triggered at the MAC layer, for example, a Buffer Status Report (BSR, Buffer Status Report) at the MAC layer triggers the SR.
[0103]
In some embodiments, the presence of the first information and/or the second information at the MAC layer may include the following situation: due to a specific condition or event that initiates a random access procedure at the MAC layer, the random access preamble to be sent ).
[0104]
In some embodiments, the terminal device performs comparison at the MAC layer. Taking priority or priority order as an example in the comparison process, if the priority of the first information is higher (the content of priority order or priority will be described later), Then the terminal device at least instructs the physical layer from the MAC layer to send the first uplink signal related to the first information on the first time-frequency resource, and the physical layer of the terminal device sends the first uplink signal on the first time-frequency resource; If the priority of the second information is higher, the terminal device at least instructs from the MAC layer to the physical layer to send a second uplink signal related to the second information on the second time-frequency resource, and the physical layer of the terminal device is in the first Two time-frequency resources send the second uplink signal.
[0105]
In some embodiments, the terminal device indicates the first information and/or the first uplink signal and/or the first time-frequency resource from the MAC layer to the physical layer, and the terminal device indicates the second information and/or the first information and/or the first time-frequency resource from the MAC layer to the physical layer The second uplink signal and/or the second time-frequency resource.
[0106]
In some embodiments, the physical layer of the terminal device may combine the first information and the second information before sending, for example, in a multiplexing manner, and use the first time-frequency resource or the second time-frequency resource to send the combined A third uplink signal containing the first information and the second information.
[0107]
In some embodiments, the physical layer of the terminal device may piggy-back the first information in the second time-frequency resource, eg, the SR (first information) may be piggy-backed in the PUSCH resource (the second time-frequency resource) , which is sent together with the data carried on the PUSCH resource and/or other uplink control information (second information).
[0108]
In some embodiments, the MAC layer of the terminal device indicates to the physical layer information related to the priority of the first uplink signal or the first information or the first time-frequency resource, and/or, the second uplink signal or the second information Or information related to the priority of the second time-frequency resource.
[0109]
For example, it can indicate that the priority of the first information is 6, and the priority of the second information can be indicated to be -2, wherein the lower the value, the higher the priority; for another example, it can indicate whether the second information has priority over the first uplink signal, Or indicate whether the second information can preempt the transmission of the first uplink signal. Whether the UL-SCH resource only contains padding bits, the MAC PDU or the UL-SCH resource containing only the padding bits has a low priority.
[0110]
The priority of the first time-frequency resource and/or the second time-frequency resource (may be referred to as a third priority) may be determined by the MAC layer according to the information carried or to be carried by the first time-frequency resource and/or the second time-frequency resource , such as determining the value of the priority or whether the second time-frequency resource is prior to the first time-frequency resource, etc.; that is, the priority of the time-frequency resource here is determined by the MAC layer, and then notified by the MAC layer to the physical layer.
[0111]
FIG. 4 is an example diagram of a conflict between a first uplink signal and a second uplink signal according to an embodiment of the present application. As shown in FIG. 4 , taking the first uplink signal as the PUSCH carrying the eMBB service and the second uplink signal as the PUSCH carrying the SR as an example, the first information is the UL-SCH transmission corresponding to the eMBB service, and the second information is the SR.
[0112]
For example, the SR is triggered by the URLLC service, because the priority of the logical channel corresponding to the URLLC service that triggers the SR is higher than the priority of the logical channel corresponding to the eMBB service in UL-SCH transmission, that is, the priority of the second information is higher than that of the first The priority of a message, so the SR is sent.
[0113]
The following describes the priority order of the first information and the second information, or the priority of the first information and the priority of the second information.
[0114]
In some embodiments, the first information and the The priority order of the second information.
[0115]
In some embodiments, the first information is determined according to a medium access control (MAC) protocol data unit (PDU) and/or uplink shared channel (UL-SCH) resource and/or logical channel priority and/or trigger event, respectively The first priority of the first information and the second priority of the second information; and comparing the first priority of the first information and the second priority of the second information to determine the priority order of the first information and the second information.
[0116]
In some embodiments, the first information and the second information.
[0117]
For example, the first information and/or the second information is an SR, and the priority order or priority is determined according to the priority of the logical channel that triggers the SR. For example, the priority of the SR in FIG. 4 is equal to the priority of the logical channel corresponding to the URLLC service that triggers the SR.
[0118]
For another example, the first information and/or the second information is a random access preamble, and the priority order or priority is determined according to a condition/event that triggers a random access procedure (random access procedure). For example, the random access procedure is triggered by events as shown in Table 1 below:
[0119]
Table 1
[0120]

[0121]

[0122]
For another example, the priority order or priority of the random access preamble may further include at least one of the following manners:
[0123]
- The random access preamble of the following conditions/events triggering the random access procedure has a higher priority than MAC PDU or uplink shared channel (UL-SCH) resources or logical channel data; these conditions/events include at least one of the following : Initial access from RRC_IDLE, RRC Connection Re-establishment procedure, Handover, Request by RRC upon synchronous reconfiguration, Transition from RRC_INACTIVE, To establish time alignment at SCell addition, Beam failure recovery, etc.;
[0124]
- The priority of the random access preamble of the following conditions/events that trigger the random access process is the priority of the logical channel corresponding to uplink data or downlink data; these conditions/events include at least one of the following: DL or UL data arrival during RRC_CONNECTED when UL synchronisation status is "non-synchronised", UL data arrival during RRC_CONNECTED when there are no PUCCH resources for SR available, etc.;
[0125]
- The conditions for triggering the random access procedure/the priority of the random access preamble of the event SR failure is the priority of the logical channel that triggers the SR;
[0126]
- Conditions/Events that trigger the random access procedure The random access preamble of the Request for Other SI has a lower priority than the MAC PDU or uplink shared channel (UL-SCH) resource or logical channel data, or is higher than the MAC PDU and UL - Both SCH resources and logical channel data have low priority.
[0127]
In some embodiments, the MAC PDU or UL-SCH resource includes at least one of the following: MAC CE (control element), data corresponding to a logical channel (herein referred to as logical channel data), and padding.
[0128]
In some embodiments, no MAC PDU is generated/assembled/obtained, and the highest priority among the priorities of one or more logical channels is used as the priority of the UL-SCH resource.
[0129]
In some embodiments, without generating/assembling/obtaining a MAC PDU, the priority of one or more logical channels that satisfy the logical channel priority processing mapping restriction (LCP mapping restriction) of the first time-frequency resource/second time-frequency resource will be The highest priority in the levels is used as the priority of the UL-SCH resource.
[0130]
In some embodiments, no MAC PDU is generated/assembled/obtained, and the highest priority will be given to the priority of one or more logical channels with data to be sent that satisfy the LCP mapping constraints of the first time-frequency resource/second time-frequency resource level as the priority of the UL-SCH resource.
[0131]
In some embodiments, in the case that the MAC PDU or UL-SCH resource contains data corresponding to the logical channel (and possibly padding) but does not contain the MAC CE, the highest priority among the priorities of one or more logical channels is set As the priority of the MAC PDU or the UL-SCH resource.
[0132]
In some embodiments, in the case that the MAC PDU or UL-SCH resource contains MAC CE (and possibly padding) but does not contain data corresponding to the logical channel, the highest priority among the priorities of one or more MAC CEs is assigned As the priority of the MAC PDU or the UL-SCH resource.
[0133]
In some embodiments, in the case where a MAC PDU or UL-SCH resource contains a MAC CE (and possibly padding) but does not contain data corresponding to a logical channel, the highest priority among the priorities of the one or more MAC CEs is determined by Network device configuration, or determined according to the type of MAC CE.
[0134]
For example, the priority order of different MAC CEs is:
[0135]
- C-RNTI MAC CE;
[0136]
- Configured Grant Confirmation MAC CE (Configured Grant Confirmation MAC CE);
[0137]
- MAC CE for BSR with exception of BSR included for padding (MAC CE for BSR, with exception of BSR included for padding);
[0138]
- Single Entry PHR MAC CE or Multiple Entry PHR MAC CE;
[0139]
- MAC CE for Recommended bit rate query (MAC CE for Recommended bit rate query);
[0140]
- MAC CE for BSR included for padding.
[0141]
In some embodiments, in the case that the MAC PDU or UL-SCH resource contains both the data corresponding to the logical channel and the MAC CE (and possibly padding), the highest priority among the priorities of one or more logical channels is set As the priority of the MAC PDU or the UL-SCH resource.
[0142]
For example, the priority of all logical channels is higher than the priority of all MAC CEs.
[0143]
As another example, only the highest priority in the logical channel is considered. The highest priority in the logical channel is determined according to the priority in the logical channel.
[0144]
In some embodiments, in the case that the MAC PDU or UL-SCH resource contains both the data corresponding to the logical channel and the MAC CE (and possibly padding), the highest priority among the priorities of one or more MAC CEs is assigned As the priority of the MAC PDU or the UL-SCH resource.
[0145]
For example, the priority of all MAC CEs is higher than the priority of all logical channels.
[0146]
For another example, only the highest priority among the MAC CEs contained in the MAC PDU is considered. The highest priority in the MAC CE is determined according to the priority in the MAC CE (for example, the priority order of the MAC CE is determined according to the priority of resource allocation in the LCP process).
[0147]
In some embodiments, in the case that the MAC PDU or UL-SCH resource contains both data corresponding to the logical channel and MAC CE (and possibly padding), the one or more logical channels and the one or more MAC CEs are combined. The highest priority among the priorities is used as the priority of the MAC PDU or the UL-SCH.
[0148]
In some embodiments, when the MAC PDU or UL-SCH resource contains both data corresponding to the logical channel and MAC CE (and possibly padding), the priority order or priority is determined according to the type of the logical channel and the MAC CE.
[0149]
For example, the priority order of data for different MAC CEs and logical channels is:
[0150]
- C-RNTI MAC CE or data from UL-CCCH;
[0151]
- Configured Grant Confirmation MAC CE (Configured Grant Confirmation MAC CE);
[0152]
- MAC CE for BSR with exception of BSR included for padding (MAC CE for BSR, with exception of BSR included for padding);
[0153]
- Single Entry PHR MAC CE or Multiple Entry PHR MAC CE;
[0154]
- data from any logical channel except UL-CCCH;
[0155]
- MAC CE for Recommended bit rate query (MAC CE for Recommended bit rate query);
[0156]
- MAC CE for BSR included for padding.
[0157]
For another example, the value of the logical channel priority can be an integer from 1 to 16, and the smaller the value, the higher the priority; the priority is higher than the MAC CE of a logical channel (for example, C-RNTI MAC CE, Configured Grant Confirmation MAC The priority value of CE, etc.) can be a negative integer or 0, and the smaller the value, the higher the priority.
[0158]
For example, the priority of Single Entry PHR MAC CE or Multiple Entry PHR MAC CE is 0; the priority of MAC CE for BSR, with exception of BSR included for padding is -1; the priority of Configured Grant Confirmation MAC CE is -2; The C-RNTI MAC CE or data from UL-CCCH is -3; the priority of MAC CE for Recommended bit rate query is 17; the priority of MAC CE for BSR included for padding is 18.
[0159]
For another example, if a MAC PDU/UL-SCH resource contains the data of the Configured Grant Confirmation MAC CE and the logical channel, the priority of the MAC PDU/UL-SCH resource is the priority of the Configured Grant Confirmation MAC CE (for example, - 2).
[0160]
In some embodiments, the priority order or priority of logical channels and MAC CEs is predefined or configured by the network device.
[0161]
For example, the priority of the MAC CE and the priority of the logical channel are uniformly ordered, which may be configured by the network, for example, the network is configured by a radio resource control (RRC) message. Table 2 shows an example of the configuration.
[0162]
Table 2
[0163]
[table 0001]
MAC CE or Logical Channel (LCH) Priority
C-RNTI MAC CE 1
LCH ID 1 2
Configured Grant Confirmation MAC CE 3
BSR MAC CE (excluding padding BSR) 4
LCH ID 2 5
… …
[0164]
For the configuration structure of the RRC message, for example, the RRC reconfiguration message can be used. The priority configuration for LCH in Table 2 above can be placed in rlc-BearerToAddModList, and the priority configuration for MAC CE can be placed in mac-CellGroupConfig. An example can be shown in Tables 3 and 4 below:
[0165]
table 3
[0166]

[0167]
Table 4
[0168]

[0169]
In some embodiments, when the MAC PDU or UL-SCH resource contains both data corresponding to the logical channel and MAC CE (and possibly padding), the data of the logical channel is at least divided into data from the first logical channel and data from the second logical channel, and determine the priority order or priority according to the type of logical channel and MAC CE.
[0170]
The priority value of the logical channel corresponding to the first logical channel is lower than the first threshold, and the priority value of the logical channel corresponding to the second logical channel is higher than or equal to the first threshold; or, the transmission time corresponding to the first logical channel When the length is lower than the second threshold, the transmission time length corresponding to the second logical channel is higher than or equal to the second threshold.
[0171]
For example, the data of the logical channel may be divided into at least two types, for example, the logical channel of the URLLC service type and the logical channel of the eMBB service type. Logical channels whose logical channel priority is higher than a specific value can be classified into one category, and logical channels whose priority is lower than a specific value can be classified into one category; or logical channels whose max PUSCH duration in LCP restriction is lower than a specific value can be classified into one category. Class, logical channels above a certain value are grouped into a class. where specific values ​​can be predefined or configured.
[0172]
For example, the priority order or priority of data from the first logical channel is higher than the priority order or priority of data from the second logical channel. For example, the priority order of data for different MAC CEs and logical channels can be:
[0173]
- C-RNTI MAC CE or data from UL-CCCH;
[0174]
- Configured Grant Confirmation MAC CE (Configured Grant Confirmation MAC CE);
[0175]
- MAC CE for BSR with exception of BSR included for padding (MAC CE for BSR, with exception of BSR included for padding);
[0176]
- Single Entry PHR MAC CE or Multiple Entry PHR MAC CE;
[0177]
- data from the first logical channel other than UL-CCCH;
[0178]
- data from a second logical channel other than UL-CCCH;
[0179]
- MAC CE for Recommended bit rate query (MAC CE for Recommended bit rate query);
[0180]
- MAC CE for BSR included for padding.
[0181]
For another example, the priority order or priority of data from the first logical channel may be higher than a specific MAC CE, for example, higher than the BSR MAC CE and/or PHR MAC CE, or the priority order or priority of data from the first logical channel. The level can be lower than a specific MAC CE, eg, lower than a C-RNTI MAC CE or a configuration grant acknowledgment MAC CE. For example, the priority order of data for different MAC CEs and logical channels can be:
[0182]
- C-RNTI MAC CE or data from UL-CCCH;
[0183]
- data from the first logical channel other than UL-CCCH;
[0184]
- Configured Grant Confirmation MAC CE (Configured Grant Confirmation MAC CE);
[0185]
- MAC CE for BSR with exception of BSR included for padding (MAC CE for BSR, with exception of BSR included for padding);
[0186]
- Single Entry PHR MAC CE or Multiple Entry PHR MAC CE;
[0187]
- data from a second logical channel other than UL-CCCH;
[0188]
- MAC CE for Recommended bit rate query (MAC CE for Recommended bit rate query);
[0189]
- MAC CE for BSR included for padding.
[0190]
In some embodiments, the priority of a particular MAC PDU may be set to the lowest priority, or a predefined priority, or a configured priority, or a default priority.
[0191]
For example, if a MAC PDU does not contain logical channel data and does not contain MAC CE, for example, the MAC PDU is used for the physical layer to transmit aperiodic CSI reports and there is no data to be sent on the logical channel, the MAC PDU will only contain padding bits. At this time, the priority of the MAC PDU can be set to the lowest, for example, set to 20, or the priority of the MAC PDU can be placed at the end.
[0192]
The comparison of the first information and the second information is described in detail below according to various situations:
[0193]
In some embodiments, both the first information and the second information are SRs. For example, the first information is SR1 and the second information is SR2. If the PUCCH resources corresponding to the configuration of SR1 overlap with the PUCCH resources corresponding to the configuration of SR2, the Including at least one of the following embodiments:
[0194]
For example, when the priority of the logical channel triggering SR1 (eg, logical channel priority) is higher than or equal to the priority of the logical channel triggering SR2, the physical layer is instructed to send SR1 on the PUCCH resource corresponding to SR1. For example, the corresponding scheme of the communication standard can be described in Table 5 below:
[0195]
table 5
[0196]

[0197]

[0198]
For another example, it is also possible to compare the priorities of the logical channel that triggers SR1 and the logical channel that triggers SR2 (for example, the logical channel priority), and perform subsequent operations on the SR triggered by the logical channel with a higher priority, such as judging related Conditions and/or instructs the physical layer to send the SR on the PUCCH resource corresponding to the SR. For example, the corresponding scheme of the communication standard can be described in Table 6 below:
[0199]
Table 6
[0200]
claims
[Claim 1]
An apparatus for sending an uplink signal, comprising: an instructing unit, which instructs, from a medium access control layer to a physical layer, to send a first uplink signal at a first time-frequency resource; a determining unit, which instructs the medium access control layer to send a first uplink signal when the The frequency resource and the first time-frequency resource at least partially overlap in the time domain or in the time-frequency domain; and a comparison unit, which compares the first information related to the first uplink signal with the first information at the medium access control layer. second information related to the second time-frequency resource.
[Claim 2]
The apparatus according to claim 1, wherein the instructing unit is further configured to at least instruct from the medium access control layer to the physical layer to send the first information related to the second information on the second time-frequency resource. 2. Up signal.
[Claim 3]
The apparatus according to claim 1, wherein the apparatus further comprises: a sending unit, which sends the second uplink signal on the second time-frequency resource on the physical layer, and/or on the physical layer The layer sends the first uplink signal on the first time-frequency resource.
[Claim 4]
The apparatus according to claim 1, wherein the indicating unit is further configured to indicate the second information or the second time-frequency resource or the second uplink signal from the medium access control layer to the physical layer priority-related information.
[Claim 5]
The apparatus according to claim 1, wherein the first uplink signal or the second uplink signal comprises at least one of the following: a physical random access channel, a physical uplink control channel, and a physical uplink shared channel; the first uplink signal The information or the second information includes at least one of the following: a random access preamble, a scheduling request, a medium access control protocol data unit, data in a logical channel, uplink shared channel resources, and channel state information.
[Claim 6]
The apparatus according to claim 1, wherein the determining unit is further configured to determine the first A priority order of the first message and the second message.
[Claim 7]
The apparatus according to claim 1, wherein the determining unit is further configured to determine the the first priority of the first information and the second priority of the second information; and the comparison unit is further configured to compare the first priority of the first information and the second priority of the second information , to determine the priority order of the first information and the second information.
[Claim 8]
The apparatus according to claim 1, wherein the comparing unit is further configured to compare the first a message and the second message.
[claim 9]
The apparatus according to claim 5, wherein the protocol data unit of the medium access control or the uplink shared channel resource comprises at least one of the following: a control element of the medium access control, data corresponding to a logical channel, and padding.
[claim 10]
9. The apparatus of claim 9, wherein in the case that the medium access control protocol data unit or the uplink shared channel resource contains data corresponding to the logical channel but does not contain the medium access control control element , taking the highest priority among the priorities of one or more logical channels as the protocol data unit of the medium access control or the priority of the uplink shared channel resource.
[claim 11]
9. The apparatus of claim 9, wherein in the case that the medium access control protocol data unit or the uplink shared channel resource contains the medium access control control element but does not contain the data corresponding to the logical channel , taking the highest priority among the priorities of one or more control elements of the medium access control as the priority of the protocol data unit of the medium access control or the priority of the uplink shared channel resource.
[claim 12]
9. The apparatus of claim 9, wherein in the case that the medium access control protocol data unit or the uplink shared channel resource contains the medium access control control element but does not contain the data corresponding to the logical channel , the highest priority among the priorities of one or more media access control control elements is configured by the network device, or determined according to the type of media access control control elements.
[claim 13]
9. The apparatus of claim 9, wherein in the case that the protocol data unit of the medium access control or the uplink shared channel resource includes both the data corresponding to the logical channel and the control element of the medium access control , taking the highest priority among the priorities of one or more logical channels as the protocol data unit of the medium access control or the priority of the uplink shared channel resource, or, taking one or more control elements of the medium access control The highest priority among the priorities is used as the priority of the protocol data unit of the medium access control or the priority of the uplink shared channel resource.
[claim 14]
9. The apparatus of claim 9, wherein in the case that the protocol data unit of the medium access control or the uplink shared channel resource includes both the data corresponding to the logical channel and the control element of the medium access control , taking the highest priority among the priorities of one or more logical channels and one or more control elements of medium access control as the priority of the medium access control protocol data unit or the uplink shared channel resource.
[claim 15]
9. The apparatus of claim 9, wherein in the case that the protocol data unit of the medium access control or the uplink shared channel resource includes both the data corresponding to the logical channel and the control element of the medium access control , the priority order or priority is determined according to the type of control elements of the logical channel and medium access control.
[claim 16]
9. The apparatus of claim 9, wherein a priority order or priority of the logical channels and the control elements of the medium access control is predefined or configured by a network device.
[claim 17]
9. The apparatus of claim 9, wherein in the case that the protocol data unit of the medium access control or the uplink shared channel resource contains both the data corresponding to the logical channel and the control element of the medium access control , divide the data of the logical channel into at least the data from the first logical channel and the data from the second logical channel, and determine the priority order or priority according to the type of the logical channel and the control element of the medium access control; The priority value of the logical channel corresponding to a logical channel is lower than the first threshold, and the priority value of the logical channel corresponding to the second logical channel is higher than or equal to the first threshold; or, the first logical channel corresponds to The transmission time length of the second logical channel is lower than the second threshold, and the transmission time length corresponding to the second logical channel is higher than or equal to the second threshold.
[claim 18]
The apparatus of claim 1, wherein the priority of the second time-frequency resource is higher than or equal to the priority of the first time-frequency resource.
[claim 19]
An apparatus for sending an uplink signal, comprising: a determining unit, which determines at a medium access control layer that a first time-frequency resource and a second time-frequency resource at least partially overlap in the time domain or in the time-frequency domain; the medium access control layer compares the first information related to the first time-frequency resource with the second information related to the second time-frequency resource; and an instructing unit that instructs the physical layer from the medium access control layer Send the first uplink signal related to the first information on the first time-frequency resource and/or send the second uplink signal related to the second information on the second time-frequency resource, or indicate that the The first time-frequency resource or the second time-frequency resource sends a third uplink signal related to the first information and the second information.
[claim 20]
An apparatus for receiving an uplink signal, comprising: a sending unit, which sends configuration information or indication information to a terminal device, where the configuration information or indication information is at least used by the terminal device to compare first information related to a first uplink signal and second information related to the second time-frequency resource, or comparing the first information related to the first time-frequency resource with the second information related to the second time-frequency resource; and a receiving unit, which receives the transmission from the terminal device the first uplink signal and/or the second uplink signal related to the second information, or the third uplink signal related to the first information and the second information.