CN113286368B - Multipoint uplink data transmission method and equipment - Google Patents

Multipoint uplink data transmission method and equipment Download PDF

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Publication number
CN113286368B
CN113286368B CN202110362297.6A CN202110362297A CN113286368B CN 113286368 B CN113286368 B CN 113286368B CN 202110362297 A CN202110362297 A CN 202110362297A CN 113286368 B CN113286368 B CN 113286368B
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trp
srs resource
uplink data
trps
control information
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CN113286368A (en
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焦慧颖
王志勤
杜滢
魏贵明
徐菲
沈霞
闫志宇
刘晓峰
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China Academy of Information and Communications Technology CAICT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies

Abstract

The application discloses a multipoint uplink data transmission method and equipment. The method comprises the following steps: configuring two SRS resource sets, wherein each set comprises one or more SRS resources, and each set is respectively associated with one TRP; the dynamic downlink control signaling comprises two SRI indication information, wherein the first SRI indication information is used for indicating resources in a first SRS resource set, and the second SRI indication information is used for indicating resources in a second STS resource set; the dynamic downlink control signaling contains TRP control information, and the TRP control information is used for controlling the switching of the TRP. The device is used for realizing the method. The method and the device solve the problem that the uplink data transmission resource configuration of the mobile terminal is not flexible under the condition of multiple TRPs.

Description

Multipoint uplink data transmission method and equipment
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a method and a device for transmitting uplink data.
Background
The 5G NR standard supports uplink data transmission of a single transmit receive node (TRP), and the flow of non-codebook transmission is: firstly, a terminal calculates downlink pre-coding code words according to the measurement result of downlink CSI-RS (channel state information-reference signal), the downlink pre-coding code words are used for sending uplink channel Sounding Reference Signals (SRS), then a base station selects 1 or more SRS resources according to the received uplink SRS, the terminal is informed through SRI, and finally the terminal uses the corresponding pre-coding code words according to the SRI indicated by the base station to send uplink data. When the high layer is configured to non-codebook transmission, only one SRS resource set (SRS resource set) is allowed to be configured, the maximum number of SRS resources in the SRS resource set is related to the number of SRS resources allowed to be simultaneously transmitted on the same symbol and the terminal capability, and the maximum number of SRS resources is 4. Each SRS resource is only configured with one SRS port, an ID of one NZP CSI-RS resource is associated in the SRS resource set configuration, and the base station indicates 1 or more selected SRS resources through SRI in a downlink control signaling to implicitly indicate an uplink beam adopted by uplink data transmission.
In a scenario of repeatedly transmitting uplink data with multiple TRPs, when a terminal moves or rotates, it is necessary to use multi-beam operation, especially in a high frequency band. Therefore, how to flexibly switch the terminal device between the single-TRP and multi-TRP operating states, flexibly adapt to the operating resources under the multi-beam condition, and flexibly configure various mapping modes is a technical problem to be solved.
Disclosure of Invention
The application provides a multipoint uplink data transmission method and equipment, and aims to solve the problem that uplink data transmission resource configuration of a mobile terminal is inflexible under a multi-TRP condition.
The embodiment of the application provides a method for transmitting multipoint uplink data, which comprises the following steps:
configuring two SRS resource sets, wherein each set comprises one or more SRS resources, and each set is respectively associated with one TRP;
the dynamic downlink control signaling comprises two SRI indication information, wherein the first SRI indication information is used for indicating resources in a first SRS resource set, and the second SRI indication information is used for indicating resources in a second STS resource set;
the dynamic downlink control signaling contains TRP control information, and the TRP control information is used for controlling the switching of the TRP.
Preferably, the TRP control information indicates a single TRP transmission or a multiple TRP transmission. If the TRP control information indicates single TRP transmission, uplink data is transmitted through one TRP; and if the TRP control information indicates that multiple TRPs are transmitted, transmitting uplink data by two TRPs in turn.
Preferably, the TRP control information indicates a correspondence between two TRPs and two SRS resource sets.
Preferably, the TRP control information indicates a mapping manner of repeated transmission of multiple TRPs.
Further preferably, the TRP control information is 0 bit, and is indicated to be TRP transmission; the TRP control information is 1 bit or more, and is indicated to be sent by multiple TRPs.
Further preferably, the TRP control information is 2 bits, wherein 1 bit is used to indicate a mapping manner of repeated transmission of multiple TRPs, and is cyclic mapping or sequential mapping;
the 1 bit is used to indicate a correspondence between the two TRPs and the two SRS resource sets.
Further, the method of the present application is applied to a terminal device, and includes the following steps:
the terminal equipment receives the dynamic downlink control signaling;
the terminal equipment identifies TRP control information and determines the corresponding relation between the two SRS resource sets and the two TRPs according to the indication of the TRP control information;
the terminal equipment identifies SRI indication information and determines resources of a first SRS resource set and a second SRS resource set;
and the terminal equipment respectively uses the first SRS resource and the second SRS resource to alternately send uplink data through the two TRPs.
Further, the method also comprises the following steps:
the terminal equipment determines a mapping mode of repeated transmission of multiple TRPs according to the indication of the TRP control information;
and the terminal equipment repeatedly transmits the uplink data through the two TRPs in a cyclic mapping or sequential mapping mode.
Further, the method also comprises the following steps:
and the terminal equipment switches from multi-TRP to single TRP or from multi-TRP to single TRP according to the indication of the TRP control information and sends uplink data.
Further, the method of the present application is applied to a network device, and includes the following steps:
the network device generates the TRP control information for indicating the corresponding relation between the two SRS resource sets and the two TRPs; generating the SRI indication information for indicating the resources of the first SRS resource set and the second SRS resource set;
the network equipment sends the dynamic downlink control signaling;
and the network equipment receives uplink data in turn by using the first SRS resource and the second SRS resource through the two TRPs respectively.
Further, the method also comprises the following steps:
the network equipment generates an indication of the TRP control information and is used for indicating a mapping mode of repeated transmission of multiple TRPs;
the network equipment repeatedly receives the uplink data through the two TRPs in a cyclic mapping or sequential mapping mode.
Further, the method also comprises the following steps:
and the network equipment switches from multi-TRP to single TRP or switches from multi-TRP to single TRP according to the instruction of the TRP control information and receives uplink data.
The present application further proposes a communication device comprising: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to any one of the embodiments of the present application.
The present application also proposes a computer-readable medium on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
the invention realizes flexible mapping when multiple TRP sends uplink data multi-beam repeated sending, ensures that the best uplink beam can be adopted to carry out multiple TRP repeated sending when the terminal moves or rotates, and simultaneously realizes flexible signaling switching of single TRP and multiple TRP uplink sending. The invention patent can well realize the mapping mode with the minimum signaling overhead, and when the single TRP is switched, no signaling overhead is added.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a flowchart of an embodiment of a method for transmitting uplink data of multiple points according to the present application;
fig. 2 is a schematic diagram of an embodiment of a circular mapping starting from a first TRP;
fig. 3 is a schematic diagram of an embodiment of sequential mapping starting from a first TRP;
fig. 4 is a schematic diagram of an embodiment of a circular mapping starting from a second TRP;
fig. 5 is a schematic diagram of an embodiment of sequential mapping starting from a second TRP;
FIG. 6 is a flow chart of an embodiment of the method of the present application for a network device;
FIG. 7 is a flowchart of an embodiment of the method of the present application for a terminal device;
FIG. 8 is a flow chart of an embodiment of a network device of the present application;
fig. 9 is a flowchart of an embodiment of a terminal device according to the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to reduce signaling overhead, the design of downlink control signaling for repeated uplink data transmission of multiple TRPs preferably reuses existing downlink control signaling bits, and the mapping manner (pattern) of multiple beams (i.e., TRPs) for repeated uplink data transmission should have sufficient flexibility to be configured to adapt to beam direction changes caused by movement and rotation of the terminal in a high frequency band. Dynamic signaling indication is considered to ensure that the network has sufficient flexibility and timely adopts a varying mapping manner according to UE mobility, channels, and the like. On the other hand, single TRP and multiple TRP transmissions are dynamically switched flexibly to ensure reliable transmission as channel conditions change.
The idea of the application is that multiple TRP PUSCHs are transmitted, two SRS resource sets are configured, each SRS resource set comprises one or more resources, and the SRS resources are selected through SRI indication of DCI. For example, one way is for a first set of SRS resources to be associated with a first TRP and for a second set of SRS resources to be associated with a second TRP. It is preferred to include in the DCI indication SRS resources of two SRI fields each indicating a first set of SRS resources and a second set of SRS resources. In order to realize flexible switching between a single TRP and multiple TRPs and flexibly switch the mapping relationship of beams when multiple TRPs are transmitted, a specific signaling design is as follows.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a flowchart of an embodiment of a method for transmitting multipoint uplink data according to the present application.
The embodiment of the application provides a multipoint uplink data transmission method, which comprises the following steps of 101 to 103:
step 101, configuring two SRS resource sets, each set comprising one or more SRS resources, each set being associated with one TRP;
102, respectively indicating the resources of the two SRS resource sets by the dynamic downlink control signaling;
the dynamic downlink control signaling comprises two SRI indication information, wherein the first SRI indication information is used for indicating resources in a first SRS resource set, and the second SRI indication information is used for indicating resources in a second STS resource set;
that is, the first SRI indication information identifies a first SRS resource that is part of a first set of SRS resources; second SRI indication information identifying a second SRS resource that is part of a second set of SRS resources.
For example, for non-codebook transmission, the SRI field in the downlink control signaling is defined in table 7.3.1.1.2-28/29/30/31 of specification 38.212, where when the maximum number of layers for uplink data transmission is 4, the SRI indication information is as follows:
Figure BDA0003006032130000061
the 3GPP R17 considers repeated transmission of multiple TRPs in an uplink, supports non-codebook uplink data transmission when considering signaling design, increases the number of SRS resource sets capable of being supported to 2, and simultaneously supports sequential mapping and cyclic mapping by a plurality of repeated data.
Therefore, the SRI field includes first SRI indication information and second SRI indication information indicating resources in the first SRS resource set and the second SRS resource set, respectively. For example, the number of resources in the first set of SRS resources is N SRS 1 =2, the first SRI indication information is (0, 1), and is an identifier of the first SRS resource; as another example, the number of resources in the second set of SRS resources is N SRS 2 =3, the second SRI indication information is (1, 2), and is an identifier of the second SRS resource.
For another example:
and multi-TRP PUSCH transmission, two SRS resource sets are configured, each resource set comprises one or more resources, and the SRS resources are selected through SRI indication of DCI. One way is for the first set of SRS resources to be associated with a first TRP and for the second set of SRS resources to be associated with a second TRP. Considering the case of the single beam PUSCH of Rel15, the SRI field of the DCI indicates one or more SRS resources in the set of SRS resources. Since the two sets of SRS resources are used as multiple TRP PUSCH repetitions and the indication of SRS resources should come from both the first set and the second set, it is preferable to include SRS resources in the uplink DCI where two SRI fields each indicate the first set of SRS resources and the second set of SRS resources.
SRI Table 1 indicates the uplink beam of the first SRS resource set
Bit-field mapping index SRI(s),N SRS ＝2
0 0
1 1
2 0,1
3 reserved
SRI Table 2 indicates an uplink beam for a second set of SRS resources
Bit-field mapping index SRI(s),N SRS ＝2
0 0
1 1
2 0,1
3 reserved
103, controlling a TRP switching mode by the dynamic downlink control signaling;
the dynamic downlink control signaling contains TRP control information, and the TRP control information is used for controlling the switching of the TRP.
And the dynamic signaling dynamically gives a selection command to single TRP and multi-TRP uplink transmission.
Preferably, the TRP control information indicates a single TRP transmission or a multiple TRP transmission. The TRP control information indicates single TRP transmission, and the terminal equipment transmits uplink data through one TRP; and the TRP control information indicates that a plurality of TRPs are sent, and the terminal equipment sends uplink data by two TRPs in turn.
For example, the TRP control information is 0 bit, and is indicated to be TRP transmission; the TRP control information is 1 bit or more, and is indicated to be sent by multiple TRPs.
For another example, the downlink control signaling includes a single TRP and a multiple TRP handover indication (TRPIF), and when the handover indication is 0 bit, the single TRP is indicated to be transmitted, and when the handover indication is greater than 0 bit, the mapping mode of the multiple TRP transmission is indicated. When the switching indication is 0 bit, the method can be compatible with the existing downlink control signaling without increasing any bit number, and the flexible switching of single TRP and multiple TRPs is well realized.
When the dynamic downlink control signaling indicates that multiple TRPs are transmitted, the TRP control information indicates the corresponding relation between two TRPs and two SRS resource sets.
Further, the dynamic downlink control signaling indicates a mapping mode of repeated transmission of multiple TRPs. The TRP control information indicates a mapping mode of repeated transmission of multiple TRPs.
Further preferably, the TRP control information is 2 bits, wherein 1 bit is used to indicate a mapping manner of repeated transmission of multiple TRPs, and is cyclic mapping or sequential mapping; the 1 bit is used to indicate a correspondence between the two TRPs and the two SRS resource sets.
For example, the handover indication is 2 bits, which is used to indicate a mapping manner for repeated multi-TRP transmission, wherein one bit indicates cyclic mapping and sequential mapping, for example, when the previous bit is 0, the cyclic mapping is performed, when the previous bit is 1, the sequential mapping is performed, and the other bit of the 2 bits indicates whether mapping is performed from a first TRP (TRP 1) or from a second TRP (TRP 2), for example, when the next bit is 0, mapping is performed from TRP1, and when the next bit is 1, mapping is performed from TRP2.
The downlink control signaling designs a single TRP and a multi-TRP handover indication (TRPIF), when the handover indication is a bit, the single TRP transmission is indicated, and when the handover indication is a 2-bit, the multi-TRP transmission is indicated. When one of the 2 bits indicates cyclic mapping and sequential mapping, for example, when the previous bit is 0, the cyclic mapping is performed, when the previous bit is 1, the sequential mapping is performed, and when the next bit is 1, the other of the 2 bits indicates whether mapping is performed from TRP1 or TRP2, for example, when the next bit is 0, mapping is performed from TRP1, and when the next bit is 1, mapping is performed from TRP2.
For another example, when the signaling is 2 bits, for multi-TRP transmission, the following description is given:
bit indication Beam mapping relationships
00 TRP1 initiated circular mapping
01 TRP2 initiated cyclic mapping
10 Sequential mapping of TRP1 start
11 Sequential mapping of TRP2 start
Step 104, realizing uplink data transmission according to the SRI indication information and TRP control information of the downlink control signaling;
the method for transmitting uplink data comprises the following steps: whether a single TRP or multiple TRPs; a correspondence between a plurality of TRPs and a plurality of SRS resource sets; and a mapping mode for carrying out uplink data transmission by a plurality of TRPs.
And each TRP occupies the resource identified by the SRI indication information in the corresponding SRS resource set to transmit the uplink data. For example, a first TRP occupies a first SRS resource identified by first SRI indication information in a first SRS resource set to transmit uplink data; and the second TRP occupies a second SRS resource identified by the second SRI indication information in the second SRS resource set to transmit uplink data. Or the second TRP occupies the first SRS resource identified by the first SRI indication information in the first SRS resource set to transmit uplink data; and the first TRP occupies a second SRS resource identified by the second SRI indication information in the second SRS resource set to transmit uplink data.
Fig. 2 is a schematic diagram of an embodiment of a circular mapping starting from a first TRP.
For example, as shown in fig. 2, in a scenario of multi-TRP transmission, the sequence of the cyclic mapping is TRP1, TRP2, TRP1, TRP2. The first beam corresponds to the SRI indication of the TRP1 for uplink data transmission, and the second beam corresponds to the SRI indication of the TRP2 for uplink data transmission. The cyclic mapping is to alternately use a plurality of TRPs according to retransmission time slots until a plurality of retransmissions are finished.
Fig. 3 is a schematic diagram of an embodiment of sequential mapping starting from a first TRP.
For example, as shown in fig. 3, in a scenario of multiple TRP transmission, the TRP is used for repeated transmission of uplink data, where a first TRP corresponds to a first SRS resource set, and a second TRP corresponds to a second SRS resource set; starting from TRP1, mapping is performed sequentially, the mapping order being TRP1, TRP2. The sequential mapping is to complete multiple retransmissions according to the sequence of the TRP, and the TRP is not repeated.
Fig. 4 is a schematic diagram of an embodiment of a circular mapping starting from the second TRP.
For example, as shown in fig. 4, in a scenario of multiple TRP transmission, the TRP is used for repeated transmission of uplink data, where a first TRP corresponds to a first SRS resource set, and a second TRP corresponds to a second SRS resource set; starting from TRP2, circularly mapping, wherein the mapping order is TRP2, TRP1, TRP2 and TRP1.
Fig. 5 is a schematic diagram of an embodiment of sequential mapping starting from a second TRP.
For example, as shown in fig. 5, in a scenario of multiple TRP transmission, the TRP is used for repeated transmission of uplink data, where a first TRP corresponds to a first SRS resource set, and a second TRP corresponds to a second SRS resource set; starting from TRP2, the order of mapping is TRP2, TRP1.
Fig. 6 is a flowchart of an embodiment of the method of the present application for a network device.
Further, the method of the present application is applied to a network device, and includes at least a part of the following steps 201 to 207 or a combination thereof:
step 201, the network device selects resources of a first SRS resource set and a second SRS resource set;
step 202, the network device generates the SRI indication information for indicating resources of a first SRS resource set and a second SRS resource set; generating the TRP control information for indicating the corresponding relation between the two SRS resource sets and the two TRPs;
step 203, the network device generates the TRP control information for indicating a mapping manner of repeated transmission of multiple TRPs;
step 204, the network device sends the dynamic downlink control signaling;
step 205, the network device receives uplink data in turn by using the first SRS resource and the second SRS resource through the two TRPs, respectively. Wherein the first SRS resource is a resource identified by the first SRI indication information in a first set of SRS resources; the second SRS resource is a resource identified by the second SRI indication information in the second set of SRS resources.
And step 206, the network equipment repeatedly receives the uplink data through the two TRPs in a cyclic mapping or sequential mapping mode.
And step 207, the network device switches from the multiple TRPs to the single TRP or switches from the multiple TRPs to the single TRP according to the instruction of the TRP control information, and receives the uplink data.
Fig. 7 is a flowchart of an embodiment of the method of the present application for a terminal device.
Further, the method of the present application is applied to a terminal device, and includes at least a part of the following steps 301 to 307 or a combination of the following steps:
step 301, the terminal device receives the dynamic downlink control signaling;
step 302, the terminal device identifies TRP control information, and determines a correspondence between the two SRS resource sets and the two TRPs according to an indication of the TRP control information;
step 303, the terminal device identifies SRI indication information, and determines resources of a first SRS resource set and a second SRS resource set according to the SRI indication information;
step 304, the terminal device alternately transmits uplink data by using the first SRS resource and the second SRS resource through the two TRPs;
step 305, the terminal device determines a mapping mode of repeated transmission of multiple TRPs according to the indication of the TRP control information;
step 306, the terminal device repeatedly sends uplink data through two TRPs in a cyclic mapping or sequential mapping manner;
and 307, the terminal device switches from the multiple TRPs to the single TRP or switches from the multiple TRPs to the single TRP according to the instruction of the TRP control information, and transmits uplink data.
Fig. 8 shows a schematic diagram of an embodiment of the network device of the present invention. As shown, network device 400 includes a processor 401, a wireless interface 402, and a memory 403. Wherein the wireless interface may be a plurality of components, i.e. including a transmitter and a receiver, providing means for communicating with various other apparatus over a transmission medium. The wireless interface implements a communication function with the terminal device, and processes wireless signals through the receiving and transmitting devices, and data carried by the signals are communicated with the memory or the processor through the internal bus structure. The memory 403 contains a computer program for performing any of the embodiments of the present application, which computer program runs or is adapted on the processor 401. When the memory, processor, wireless interface circuit are connected through a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which are not described herein.
Fig. 9 is a schematic diagram of an embodiment of the terminal device of the present invention. The terminal equipment 500 (i.e., UE) includes at least one processor 501, memory 502, a user interface 503, and at least one network interface 504. The various components in the terminal device 500 are coupled together by a bus system. A bus system is used to enable the communication of the connections between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.
The user interface 503 may include a display, a keyboard, or a pointing device, such as a mouse, a trackball, a touch pad, or a touch screen, among others.
The memory 502 stores executable modules or data structures. The memory may store an operating system and application programs. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, and the like for implementing various application services.
In an embodiment of the present invention, the memory 502 contains a computer program for executing any of the embodiments of the present application, which is run or changed on the processor 501.
The memory 502 contains a computer readable storage medium, and the processor 501 reads the information in the memory 502 and combines the hardware to complete the steps of the method. In particular, the computer readable storage medium has stored thereon a computer program which, when being executed by the processor 501, carries out the steps of the method embodiments as described above with reference to any of the embodiments.
The processor 501 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method of the present application may be implemented by integrated logic circuits in hardware or instructions in software in the processor 501. The processor 501 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In a typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and a memory.
Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application therefore also proposes a computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application. For example, the memory 403, 502 of the present invention may include volatile memory in a computer readable medium, random Access Memory (RAM) and/or a form of non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM).
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Disks (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
Based on the embodiments of fig. 1 to 9, the present application further provides a mobile communication system including at least 1 embodiment of any terminal device in the present application and/or at least 1 embodiment of any network device in the present application.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising 8230; \8230;" comprises 8230; "does not exclude the presence of additional like elements in the process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims (12)

1. A multipoint uplink data transmission method, comprising the steps of:
configuring two SRS resource sets, wherein each set comprises one or more SRS resources, and each SRS resource set is respectively associated with one TRP;
the dynamic downlink control signaling comprises two SRI indication information, wherein the first SRI indication information is used for indicating resources in a first SRS resource set, and the second SRI indication information is used for indicating resources in a second SRS resource set;
the dynamic downlink control signaling comprises TRP control information, wherein the TRP control information is used for controlling the switching of TRP and comprises the following steps: indicating single TRP transmission or multiple TRP transmission, indicating the corresponding relation between two TRPs and two SRS resource sets, and indicating the mapping mode of multiple TRP repeated transmission to be cyclic mapping or sequential mapping.
2. The multipoint uplink data transmission method of claim 1,
if the TRP control information indicates single TRP transmission, uplink data is transmitted through one TRP;
and if the TRP control information indicates that multiple TRPs are transmitted, transmitting uplink data by two TRPs in turn.
3. The multipoint uplink data transmission method of claim 1,
the TRP control information is 0 bit and is indicated to be transmitted by TRP;
the TRP control information is 1 bit or more, and is indicated to be sent by multiple TRPs.
4. The multipoint uplink data transmission method of claim 1,
the TRP control information is 2 bits, wherein,
1 bit is used for indicating the mapping mode of repeated transmission of multiple TRPs;
the 1 bit is used to indicate a correspondence between the two TRPs and the two SRS resource sets.
5. The method according to any one of claims 1 to 4, used for a terminal device, comprising the following steps:
the terminal equipment receives the dynamic downlink control signaling;
the terminal equipment identifies TRP control information and determines the corresponding relation between the two SRS resource sets and the two TRPs according to the indication of the TRP control information;
the terminal equipment identifies SRI indication information and determines resources of a first SRS resource set and a second SRS resource set;
and the terminal equipment respectively uses the first SRS resource and the second SRS resource to alternately send uplink data through the two TRPs.
6. The method of claim 5, further comprising the step of:
the terminal equipment determines a mapping mode of repeated transmission of multiple TRPs according to the indication of the TRP control information;
and the terminal equipment repeatedly transmits the uplink data through the two TRPs in a cyclic mapping or sequential mapping mode.
7. The method of claim 5, further comprising the steps of:
and the terminal equipment switches from multi-TRP to single TRP or from multi-TRP to single TRP according to the indication of the TRP control information and sends uplink data.
8. The method according to any one of claims 1 to 4, comprising the following steps:
the network equipment generates the TRP control information for indicating the corresponding relation between the two SRS resource sets and the two TRPs; generating the SRI indication information for indicating the resources of the first SRS resource set and the second SRS resource set;
the network equipment sends the dynamic downlink control signaling;
and the network equipment receives uplink data in turn by using the first SRS resource and the second SRS resource through the two TRPs respectively.
9. The method of claim 8, further comprising the step of:
the network equipment generates the TRP control information and is used for indicating a mapping mode of repeated transmission of multiple TRPs;
the network equipment repeatedly receives the uplink data through the two TRPs in a cyclic mapping or sequential mapping mode.
10. The method of claim 8, further comprising the step of:
and the network equipment switches from multi-TRP to single TRP or from multi-TRP to single TRP according to the indication of the TRP control information and receives uplink data.
11. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when being executed by the processor, carries out the steps of the method according to any one of claims 1 to 10.
12. A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 10.
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