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WO2023206538A1 - 一种基于多发送接收点的通信方法、装置及存储介质 - Google Patents

一种基于多发送接收点的通信方法、装置及存储介质 Download PDF

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Publication number
WO2023206538A1
WO2023206538A1 PCT/CN2022/090681 CN2022090681W WO2023206538A1 WO 2023206538 A1 WO2023206538 A1 WO 2023206538A1 CN 2022090681 W CN2022090681 W CN 2022090681W WO 2023206538 A1 WO2023206538 A1 WO 2023206538A1
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WIPO (PCT)
Prior art keywords
trp
trps
random access
synchronization signal
timing advance
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PCT/CN2022/090681
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English (en)
French (fr)
Inventor
张振宇
李明菊
Original Assignee
北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2022/090681 priority Critical patent/WO2023206538A1/zh
Priority to CN202280001383.7A priority patent/CN117322069A/zh
Publication of WO2023206538A1 publication Critical patent/WO2023206538A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present disclosure relates to the field of communication technology, and in particular, to a communication method, device and storage medium based on multiple sending and receiving points.
  • MIMO M-TRP Multiple Transmission Reception Point
  • base stations can use multiple TRPs to provide services to terminals.
  • multiple TRPs adopt a Timing Advance (TA) for transmission, that is, TA is adjusted according to one TRP.
  • TA Timing Advance
  • different TRPs are usually in different geographical areas, and the distances between terminals and different TRPs are different, so they have different transmission delay. Therefore, by adjusting TA based on one TRP, uplink and downlink time synchronization can be achieved at the TRP on which TA adjustment is based, but uplink and downlink time synchronization cannot be achieved at other TRPs, which will cause uplink and downlink inter-symbol interference (Inter). -symbol Interference, ISI), thereby causing system performance loss.
  • Inter inter-symbol Interference
  • the present disclosure provides a communication method, device and storage medium based on multiple sending and receiving points.
  • a communication method based on multiple sending and receiving points is provided, applied to a terminal, and the method includes:
  • the at least two TRPs include TRPs between different cells.
  • the at least two TRPs include TRPs in the same cell.
  • the at least two TRPs include a first TRP and a second TRP;
  • the at least two TRPs determined to provide services for the terminal include:
  • determining that there is no second synchronization signal block of control resource set 0 in the beam direction includes:
  • the method further includes: at the first random access opportunity, sending a first random access preamble based on the first TRP, the first random access opportunity and the first random access The input preamble corresponds to the first synchronization signal block; at the second random access opportunity, a second random access preamble is sent based on the second TRP, and the second random access opportunity and the second random access The input preamble corresponds to the second synchronization signal block.
  • the second random access opportunity is determined based on indication information sent by the network device, or based on predefined rules.
  • the obtaining timing advance information corresponding to each TRP in the at least two TRPs includes:
  • determining the timing advance information corresponding to each of the at least two TRPs based on the initial timing advance information includes:
  • Receive media access control-control unit MAC-CE information where the MAC-CE information is used to indicate updated timing advance information; based on the updated timing advance information and the initial timing advance information, determine the corresponding to the at least Timing advance information for each of the two TRPs.
  • a communication method based on multiple sending and receiving points is provided, applied to network equipment, and the method includes:
  • the at least two TRPs include TRPs between different cells.
  • the at least two TRPs include TRPs in the same cell.
  • the at least two TRPs include a first TRP and a second TRP;
  • the at least two TRPs determined to provide services for the terminal include:
  • determining that there is no second synchronization signal block of control resource set 0 in the beam direction includes:
  • a synchronization signal block set is sent, and the synchronization signal block in the synchronization signal block set that does not have control resource set 0 in the beam direction is used as the second synchronization signal block.
  • the method further includes:
  • At the first random access opportunity receive a first random access preamble based on the first TRP, and the first random access opportunity and the first random access preamble correspond to the first synchronization signal block; At the second random access opportunity, a second random access preamble is received based on the second TRP, and the second random access opportunity and the second random access preamble correspond to the second synchronization signal block.
  • the second random access opportunity is determined based on indication information sent by the network device, or based on predefined rules.
  • the sending of timing advance information corresponding to each of the at least two TRPs includes:
  • a random access response is sent based on each TRP in the at least two TRPs, the random access response includes initial timing advance information; the timing advance information corresponding to each TRP in the at least two TRPs is based on the initial timing advance Information confirmed.
  • the method further includes: sending media access control-control unit MAC-CE information, where the MAC-CE information is used to indicate updated timing advance information;
  • the timing advance information is determined based on the updated timing advance information and the initial timing advance information.
  • a communication device based on multiple sending and receiving points including:
  • the processing unit is configured to determine at least two transmitting and receiving points TRP that provide services for the terminal; the obtaining unit is configured to obtain timing advance information corresponding to each of the at least two TRPs.
  • the at least two TRPs include TRPs between different cells.
  • the at least two TRPs include TRPs in the same cell.
  • the at least two TRPs include a first TRP and a second TRP; the processing unit is configured to determine at least two TRPs that provide services for the terminal in the following manner:
  • the acquisition unit is configured to acquire a synchronization signal block set indicated by the network device, and the processing unit is configured to determine in the synchronization signal block set that there is no third control resource set 0 in the beam direction. Two synchronization signal blocks.
  • the communication device based on multiple transmission and reception points further includes a sending unit, and the sending unit is configured to: at the first random access opportunity, send a first random access preamble based on the first TRP. code, the first random access opportunity and the first random access preamble code correspond to the first synchronization signal block; at the second random access opportunity, a second random access preamble is sent based on the second TRP code, the second random access opportunity and the second random access preamble correspond to the second synchronization signal block.
  • the second random access opportunity is determined based on indication information sent by the network device, or based on predefined rules.
  • the acquisition unit is configured to receive a random access response sent by a network device based on each of the at least two TRPs, where the random access response includes initial timing advance information; the processing unit Configured to determine timing advance information corresponding to each of the at least two TRPs based on the initial timing advance information.
  • the acquisition unit is configured to receive media access control-control unit MAC-CE information, where the MAC-CE information is used to indicate updated timing advance information; and the processing unit is configured to receive The updated timing advance information and the initial timing advance information are used to determine timing advance information corresponding to each TRP in the at least two TRPs.
  • a communication device based on multiple sending and receiving points including:
  • the processing unit is configured to determine at least two sending and receiving points TRP that provide services for the terminal; the sending unit is configured to send timing advance information corresponding to each of the at least two TRPs.
  • the at least two TRPs include TRPs between different cells.
  • the at least two TRPs include TRPs in the same cell.
  • the at least two TRPs include a first TRP and a second TRP;
  • the processing unit is configured to determine at least two TRPs that provide services for the terminal in the following manner:
  • the sending unit is configured to send a synchronization signal block set
  • the processing unit is configured to use a synchronization signal block in the synchronization signal block set that does not have control resource set 0 in the beam direction as the second synchronization signal block.
  • Sync signal block is configured to use a synchronization signal block in the synchronization signal block set that does not have control resource set 0 in the beam direction.
  • the communication device based on multiple transmission and reception points further includes a receiving unit, and the receiving unit is configured to:
  • At the first random access opportunity receive a first random access preamble based on the first TRP, and the first random access opportunity and the first random access preamble correspond to the first synchronization signal block; At the second random access opportunity, a second random access preamble is received based on the second TRP, and the second random access opportunity and the second random access preamble correspond to the second synchronization signal block.
  • the second random access opportunity is determined based on indication information sent by the network device, or based on predefined rules.
  • the sending unit is configured to: send a random access response based on each of the at least two TRPs, where the random access response includes initial timing advance information; corresponding to the at least two The timing advance information of each TRP in the TRP is determined based on the initial timing advance information.
  • the sending unit is further configured to: send media access control-control unit MAC-CE information, where the MAC-CE information is used to indicate updated timing advance information; in the at least two TRPs The timing advance information of each TRP is determined based on the updated timing advance information and the initial timing advance information.
  • a communication device based on multiple sending and receiving points including:
  • Processor memory used to store instructions executable by the processor
  • the processor is configured to: execute the method described in the first aspect or any implementation manner of the first aspect.
  • a communication device based on multiple sending and receiving points including:
  • Processor memory used to store instructions executable by the processor
  • the processor is configured to: execute the method described in the second aspect or any implementation manner of the second aspect.
  • a storage medium is provided. Instructions are stored in the storage medium. When the instructions in the storage medium are executed by a processor of the terminal, the terminal can execute the first aspect or the first aspect. The method described in any one of the embodiments.
  • a storage medium is provided, and instructions are stored in the storage medium.
  • the instructions in the storage medium are executed by a processor of a network device, the network device is enabled to execute the second aspect or The method described in any embodiment of the second aspect.
  • the technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: by obtaining TA information corresponding to each of the at least two TRPs, the terminal can determine the TA corresponding to each of the at least two TRPs that provide services to the terminal. information, so that the terminal can communicate based on the TA information of each TRP in at least two TRPs that provide services to the terminal, so that each TRP in the at least two TRPs can achieve uplink and downlink time alignment, and alleviate uplink and downlink inter-symbol interference.
  • Figure 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment.
  • Figure 2 is a schematic diagram of TRP uplink and downlink signal transmission and reception according to an exemplary embodiment.
  • FIG. 3 is a schematic diagram of another TRP uplink and downlink signal transmission and reception according to an exemplary embodiment.
  • FIG. 4 is a flow chart of a multi-TRP-based communication method according to an exemplary embodiment.
  • FIG. 5 is a flowchart of a multi-TRP-based communication method according to an exemplary embodiment.
  • Figure 6 is a schematic diagram of a signaling structure in which the TAC indication field of a RAR indicates a TA according to an exemplary embodiment.
  • FIG. 7 is a flow chart of a multi-TRP-based communication method according to an exemplary embodiment.
  • Figure 8 is a schematic diagram of a signaling structure in which the TAC indication field of a MAC-CE indicates a TA according to an exemplary embodiment.
  • FIG. 9 is a flow chart for determining the TA of M-TRP in an intra-cell in a communication method based on multiple TRPs according to an exemplary embodiment.
  • Figure 10 is a flow chart for determining the TA of M-TRP in an intra-cell in a communication method based on multiple TRPs according to an exemplary embodiment.
  • Figure 11 is a flow chart of a multi-TRP based communication method according to an exemplary embodiment.
  • Figure 12 is a block diagram of a communication device based on multiple TRPs according to an exemplary embodiment.
  • Figure 13 is a block diagram of a communication device based on multiple TRPs according to an exemplary embodiment.
  • FIG. 14 is a block diagram illustrating a communication device based on multiple TRPs according to an exemplary embodiment.
  • FIG. 15 is a block diagram illustrating a communication device based on multiple TRPs according to an exemplary embodiment.
  • the communication method based on multiple transmitting and receiving points involved in the present disclosure can be applied to the wireless communication system shown in FIG. 1 .
  • the network system may include a network device 110 and a terminal 120. It can be understood that the wireless communication system shown in Figure 1 is only a schematic illustration, and the wireless communication system may also include other network equipment, such as core network equipment, wireless relay equipment, wireless backhaul equipment, etc., Not shown in Figure 1.
  • the embodiments of the present disclosure do not limit the number of network devices and terminals included in the wireless communication system.
  • the wireless communication system of the embodiment of the present disclosure is a network that provides wireless communication functions.
  • Wireless communication systems can use different communication technologies, such as Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA) , Frequency Division Multiple Access (FDMA), Orthogonal Frequency-Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (Single Carrier FDMA, SC-FDMA), Carrier Sense Multiple Access/Conflict Avoidance (Carrier Sense Multiple Access with Collision Avoidance).
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency-Division Multiple Access
  • Single Carrier Frequency Division Multiple Access Single Carrier Frequency Division Multiple Access
  • SC-FDMA SC-FDMA
  • Carrier Sense Multiple Access/Conflict Avoidance Carrier Sense Multiple Access with Collision Avoidance
  • the network can be divided into 2G (English: Generation) network, 3G network, 4G network or future evolution network, such as the fifth generation wireless communication system (The 5th Generation Wireless Communication System, 5G) network, 5G network can also be called New Radio (NR).
  • 5G Fifth Generation Wireless Communication System
  • 5G network can also be called New Radio (NR).
  • NR New Radio
  • this disclosure sometimes refers to the wireless communication network as simply a network.
  • the network device 110 involved in this disclosure may also be called a wireless access network device.
  • the wireless access network device can be: a base station, an evolved base station (evolved Node B, eNB), a home base station, an access point (Access Point, AP) in a wireless fidelity (Wireless Fidelity, WIFI) system, or a wireless relay A node, wireless backhaul node or transmission point (TP), etc., may also be a gNB in an NR system, or may be a component or part of the equipment that constitutes a base station.
  • V2X vehicle-to-everything
  • the network device can also be a vehicle-mounted device. It should be understood that in the embodiments of the present disclosure, there are no limitations on the specific technology and specific equipment form used by the network equipment.
  • the terminal 120 involved in this disclosure may also be called a terminal device, user equipment (User Equipment, UE), mobile station (Mobile Station, MS), mobile terminal (Mobile Terminal, MT), etc., and is a kind of mobile terminal.
  • the terminal may be a handheld device with wireless connection capabilities, a vehicle-mounted device, etc.
  • some examples of terminals are: smartphones (Mobile Phone), pocket computers (Pocket Personal Computer, PPC), PDAs, personal digital assistants (Personal Digital Assistant, PDA), notebook computers, tablet computers, wearable devices, or Vehicle equipment, etc.
  • V2X vehicle-to-everything
  • the terminal device may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific equipment form used by the terminal.
  • the network device 110 and the terminal 120 can use any feasible wireless communication technology to transmit data to each other.
  • the transmission channel corresponding to which the network device 110 sends data to the terminal 120 is called a downlink channel (DL), and the transmission channel corresponding to which the terminal 120 sends data to the network device 110 is called an uplink channel (UL).
  • DL downlink channel
  • UL uplink channel
  • the network device involved in the embodiment of the present disclosure may be a base station.
  • the network device can also be any other possible network device
  • the terminal can be any possible terminal, which is not limited by this disclosure.
  • one base station may include one or more TRPs.
  • Each TRP can correspond to beams in different directions to facilitate communication with the corresponding terminals.
  • two TRPs only consider one TA and one TA reference time. Assume that the two TRPs are TRP1 and TRP2 respectively, and the TA and TA reference times are only aligned with TRP1. Since two TRPs are usually at different distances from the UE, transmissions between the UE and different TRPs have different delays. Therefore, for the base station, the downlink signal and the uplink signal at TRP1 can be aligned in time, but the downlink signal and the uplink signal at TRP2 cannot be aligned in time, which will cause interference ISI between uplink and downlink symbols, thereby causing the system Performance loss.
  • FIG. 2 is a schematic diagram of TRP uplink and downlink signal transmission and reception according to an exemplary embodiment.
  • Figure 2 takes two TRPs (TRP1 and TRP2) using single TA information (one TA and one TA reference time) as an example for illustration.
  • T 1 is the time when the downlink signal is sent
  • T 2 is the time when the UE receives the downlink signal from TRP1
  • T 3 is the time when the UE receives the downlink signal from TRP2
  • T 4 is the time when the UE sends the uplink signal to TRP1 and TRP2.
  • Time, T 5 is the time when TRP2 receives the uplink signal from the UE.
  • the uplink signal time received by the TRP from the UE should also be T1. It can be seen from Figure 2 that when a single TA solution is adopted, the time when TRP1 receives the uplink signal from the UE is T1, and the uplink and downlink signals of TRP1 are time aligned. However, the time when TRP2 receives the uplink signal from the UE is not T1, so there is time misalignment in the uplink and downlink signals of TRP2.
  • Multi-beam multi-beam
  • inter-cell M-TRP multi-TRP different cells
  • M-DCI Multiple Downlink Control Information
  • the system sending and receiving time is as shown in Table 2 below.
  • FIG 3 is a schematic diagram of TRP uplink and downlink signal transmission and reception according to an exemplary embodiment.
  • Figure 3 takes two TRPs (TRP1 and TRP2) using multi-TA information (2 TAs and 2 TA reference times) as an example for illustration.
  • T 1 is the time when the downlink signal is sent
  • T 2 is the time when the UE receives the downlink signal from TRP1
  • T 3 is the time when the UE receives the downlink signal from TRP2
  • T 4 is the time when the UE sends the uplink signal to TRP1
  • T 5 is the time when the UE sends the uplink signal to TRP2.
  • embodiments of the present disclosure provide a communication method based on multiple TRPs.
  • TAs are respectively configured for each TRP in multiple TRPs, so that each TRP in multiple TRPs adopts its own TA, so as to reduce System performance loss caused by time misalignment of uplink and downlink signals.
  • the embodiment of the present disclosure is directed to a multi-TRP communication method including at least two TRPs. Among them, any two TRPs among multiple TRPs can be different TRPs.
  • FIG. 4 is a flow chart of a multi-TRP-based communication method according to an exemplary embodiment. As shown in Figure 4, the multi-TRP-based communication method can be used in a terminal. The method can include the following steps:
  • step S11 at least two TRPs that provide services to the terminal are determined.
  • any two TRPs among the at least two TRPs that provide services for the terminal in the embodiments of the present disclosure may be different TRPs.
  • any two different TRPs may be called a first TRP and a second TRP.
  • step S12 TA information corresponding to each of the at least two TRPs is obtained.
  • each TRP of at least two TRPs that provide services for the terminal corresponds to its own TA information.
  • the TA information involved in the embodiment of the present disclosure may include a TA value, a TA reference time, or a TA value and a TA reference time.
  • the terminal obtains the TA information of each TRP in at least two TRPs that provide services to the terminal, so that each TRP in the at least two TRPs corresponds to its own TA information. , so when subsequent terminals communicate based on multiple TRPs, each TRP in the multiple TRPs can be based on its own TA information, which can achieve time alignment of uplink and downlink signals and improve system performance.
  • each TRP of at least two TRPs that provide services for a terminal includes a TRP of a different inter-cell.
  • each TRP of at least two TRPs includes an inter-cell TRP, can be understood as a multi-TA communication in an inter-cell M-TRP system. method.
  • each TRP of at least two TRPs that provide services for a terminal includes a TRP in the same cell (intra-cell).
  • each of at least two TRPs includes an intra-cell TRP, can be understood as a multi-TA communication in an intra-cell M-TRP system. method.
  • the communication method based on multiple TRPs provides a method of obtaining TA information corresponding to any two different TRPs among at least two TRPs.
  • any two different TRPs among the at least two TRPs may be called a first TRP and a second TRP.
  • the first TRP and the second TRP may be inter-cell TRP.
  • the embodiment of the present disclosure provides a method for obtaining TA information of each TRP in an inter-cell TRP.
  • the TA information of each TRP in the inter-cell TRP can be obtained based on the process of random access by the terminal.
  • the terminal uses the first TRP and the second TRP to perform an independent random access process, sends the random access preamble to the first TRP and the second TRP respectively, and obtains the network device based on the first TRP and the second TRP.
  • the Random Access Response (RAR) sent by TRP respectively carries the initial TA information in the RAR.
  • FIG. 5 is a flow chart of a multi-TRP-based communication method according to an exemplary embodiment. As shown in Figure 5, the multi-TRP-based communication method can be used in a terminal. The method can include the following steps:
  • step S21 receive the RAR sent by the network device based on each TRP of at least two TRPs, and the RAR includes initial TA information.
  • the initial TA information can be understood as the initial TA value.
  • step S22 based on the initial TA information, TA information corresponding to each of the at least two TRPs is determined.
  • the communication method based on multiple TRPs provided by the embodiments of this disclosure can obtain the TA information of each TRP in the inter-cell TRP based on the RAR during the independent random access process of each TRP, realizing the acquisition of multiple TA information.
  • the TA information of each TRP in the inter-cell TRP may be indicated by the Time Advance Command (TAC) field included in the RAR.
  • TAC Time Advance Command
  • FIG. 6 is a schematic diagram of a signaling structure in which the TAC indication field of a RAR indicates a TA according to an exemplary embodiment.
  • the TAC indication field of the RAR indicates that the signaling structure of the TA information is a two-byte (Byte, B) 16-bit structure. Among them, it includes 1bit reserved bit R, 12bit TAC and 3bit UL permission instruction (grant). UL Grant is used to instruct the UE to allow sending data on the corresponding uplink channel.
  • the TA information can be indicated through the TAC indication field of the RAR corresponding to the signaling structure shown in Figure 6 .
  • multiple TAs may be indicated through signaling corresponding to the number of TRPs, or multiple TAs may be indicated through one signaling.
  • T TA (N TA +N TA,offset )T c (1)
  • T TA is the determined TA value of TRP
  • T c is expressed as a basic time unit.
  • ns is the unit of time, that is, nanoseconds.
  • N TA, offset can be pre-configured through signaling. In some examples, this can be configured via n-TimingAdvanceOffset in ServingCellConfigCommon or ServingCellConfigCommonSIB.
  • N TA,offset is not configured, it can be set to the default value (or default value) of frequency range (Frequency Range, FR) 1, which is 25600.
  • N TA may be indicated by a random access response (Random Access Response, RAR) during the random access process.
  • RAR Random Access Response
  • the initial N TA can be indicated by the TAC in the RAR.
  • the initial N TA can be calculated by formula (2), for example,
  • N TA TA ⁇ 16 ⁇ 64/2 ⁇ (2)
  • T A is the time advance parameter value indicated by RAR TAC.
  • TA may be indicated by 12 bits. Therefore, the value of T A can be 0, 1, 2, ..., 3846.
  • the present disclosure takes the first TRP and the second TRP as examples for explanation.
  • the initial TA formula indicated by RAR TAC can be the following formulas (3) and (4)
  • N TA,1 T A,1 ⁇ 16 ⁇ 64/2 ⁇ (3)
  • N TA,2 T A,2 ⁇ 16 ⁇ 64/2 ⁇ (4)
  • the Medium Access Control-Control Element can send TA update information, such as sending an updated TA value.
  • Figure 7 is a flow chart of a communication method based on multiple TRPs according to an exemplary embodiment. As shown in Figure 7, the communication method based on multiple TRPs can be used in a terminal. The method can include the following steps:
  • step S31 MAC-CE information is received, and the MAC-CE information is used to indicate updated TA information.
  • step S32 TA information corresponding to each of the at least two TRPs is determined based on the updated TA information and the initial TA information.
  • the communication method based on multiple TRPs can obtain updated TA information based on MAC-CE information for the TA information of each TRP in the inter-cell TRP, and determine at least two based on the updated TA information and the initial TA information.
  • the acquisition of TA information of each TRP in the TRP realizes the acquisition of multi-TA information.
  • the updated TA information corresponding to each TRP in the inter-cell TRP may be indicated by the TAC indication field included in the MAC-CE.
  • the TAC used to indicate the initial TA information is called the first TAC, such as the TAC in FIG. 6 .
  • the TAC indicating updated TA information is called a second TAC.
  • TAC in Figure 8 For example, TAC in Figure 8.
  • FIG 8 is a schematic diagram of a signaling structure in which the TAC indication field of a MAC-CE indicates a TA according to an exemplary embodiment.
  • the TAC indication field of the MAC-CE indicates that the signaling structure of the updated TA information is a 1-byte (Byte, B) 8-bit structure. Among them, it includes 2-bit Timing Advance Group Identification (TAG ID) and 6-bit TAC.
  • TAG ID Timing Advance Group Identification
  • TAC Timing Advance Group Identification
  • multiple updated TA information may be indicated through signaling corresponding to the number of TRPs, or multiple updated TA information may be indicated through one signaling.
  • the TA initial information can be indicated through the TAC indication field of the RAR corresponding to the signaling structure shown in Figure 6 and the TA information can be indicated through the signaling structure shown in Figure 8 Let the result indicate the updated TA information through the TAC indication field of the MAC-CE.
  • N TA,new N TA,old +( TA -31) ⁇ 16 ⁇ 64/2 ⁇ (5)
  • N TA,old is the initial TA indicated by RAR
  • T A is the updated TA information indicated by MAC-CE.
  • T A 0,1,2,...,63, indicated by 6 bits.
  • the present disclosure takes the first TRP and the second TRP as examples for description.
  • N TA,new,1 N TA,old +(T A,1 -31) ⁇ 16 ⁇ 64/2 ⁇ (6)
  • N TA,new,2 N TA,old +(T A,2 -31) ⁇ 16 ⁇ 64/2 ⁇ (7)
  • different TRPs adopt independent random access processes, and the terminal sends random access preambles to different TRPs (such as the first TRP and the second TRP) to obtain TA for each TRP, followed by TAC in RAR and MAC-CE indicating initial TA and updated TA for different TRPs respectively or simultaneously.
  • TRPs such as the first TRP and the second TRP
  • TAC in RAR and MAC-CE indicating initial TA and updated TA for different TRPs respectively or simultaneously.
  • “separate indication” means that different signaling indicates different TAs
  • “simultaneous indication” means that one signaling indicates different TAs.
  • the typical value of the number of TRPs in the inter-cell M-TRP system is 2, that is, including the first TRP and the second TRP.
  • the embodiment of the present disclosure provides a method for obtaining TA information of each TRP in an intra-cell TRP.
  • the TA information of each TRP in the intra-cell TRP can be obtained based on the process of random access by the terminal.
  • different TRPs can correspond to different control resource set pool indexes (Control Resource Set PoolIndex, CORESET PoolIndex).
  • the TA information of each TRP in the intra-cell TRP can be used to determine whether there is CORESET#0 in the SSB beam direction to determine different TRPs.
  • independent random access can be performed based on at least two TRPs, and the TA information of each TRP can be obtained based on the process of random access by the terminal.
  • the random access preamble can be sent based on the specified TRP, for example, the random access preamble is sent through the TRP including CORESET#0, which is subsequently called the first TRP.
  • the terminal initiates random access based on the first TRP and sends a random access preamble, and the subsequent base station uses the physical downlink control channel (Physical Downlink Control Channel, PDCCH) sequence (order) to indicate the random access of other TRPs (hereinafter referred to as the second TRP) , or the terminal itself initiates random access to obtain TA information of multiple TRPs.
  • PDCCH Physical Downlink Control Channel
  • the second random access opportunity is determined based on indication information sent by the network device, or based on predefined rules.
  • the following describes the process of determining at least two TRPs that provide services for the terminal.
  • the terminal determines the first SSB and the second SSB according to whether there is a corresponding CORESET#0.
  • the first SSB and the second SSB one SSB has a corresponding CORESET#0, and the other SSB does not have a corresponding CORESET#0.
  • the TRP corresponding to the SSB with corresponding CORESET #0 can be understood as the first TRP
  • the TRP corresponding to the SSB without CORESET #0 can be understood as the second TRP.
  • Figure 9 is a flow chart for determining the TA of M-TRP in an intra-cell in a multi-TRP-based communication method according to an exemplary embodiment.
  • the multi-TRP-based communication method can be used In the terminal, the method can include the following steps:
  • step S41 it is determined that the first synchronization signal block (Synchronization Signal/PBCH Block, SSB) of CORESET#0 exists in the beam direction, and the TRP corresponding to the first SSB is used as the first TRP.
  • SSB Synchronization Signal/PBCH Block
  • step S42 it is determined that there is no second SSB of CORESET#0 in the beam direction, and the TRP corresponding to the second SSB is used as the second TRP.
  • the first TRP and the second TRP are determined by monitoring whether there is CORESET#0 in the SSB beam direction, and independent random access is performed based on the first TRP and the second TRP. Enter, and then the TA information of the first TRP and the second TRP can be obtained.
  • the terminal can obtain the first random access opportunity (PRACH Occasion) corresponding to the first SSB by receiving and monitoring CORESET#0 and the System Information Block (SIB). , RO) and the first random access preamble.
  • PRACH Occasion corresponding to the first SSB by receiving and monitoring CORESET#0 and the System Information Block (SIB).
  • SIB System Information Block
  • RO RO
  • the first random access preamble is sent based on the first TRP, and the first RO and the first random access preamble correspond to the first SSB.
  • the terminal when the terminal determines the second TRP, it can determine the second SSB, the second RO corresponding to the second SSB, and the second random access preamble, and send the second random access preamble in the second RO. .
  • the network device when determining the second SSB, may indicate the synchronization signal block set (SSB index set) where the second SSB is located, and the terminal determines the second SSB from the SSB index set.
  • SSB index set the synchronization signal block set
  • determining that there is no second SSB of CORESET#0 in the beam direction includes: obtaining an SSB index set indicated by the network device, and determining in the SSB index set that there is no second SSB of CORESET#0 in the beam direction. .
  • the terminal After the terminal sends the random access preamble based on each TRP in the multiple TRPs separately, it can receive the network The RAR sent by the device, and the TA corresponding to the TRP is obtained based on the RAR.
  • the terminal receives the RAR sent by the network device based on each TRP of at least two TRPs, and the RAR includes initial TA information.
  • the terminal determines TA information corresponding to each TRP in the at least two TRPs based on the initial TA information.
  • the terminal receives MAC-CE information, and the MAC-CE information is used to indicate updated TA information.
  • the terminal determines TA information corresponding to each of the at least two TRPs based on the updated TA information and the initial TA information.
  • Figure 10 is a flow chart for determining the TA of M-TRP in an intra-cell in a multi-TRP-based communication method according to an exemplary embodiment.
  • the multi-TRP-based communication method can be used In the terminal, the method can include the following steps:
  • step S51 CORESET#0 and SIB are received and monitored, and the first SSB in which CORESET#0 exists in the beam direction is obtained.
  • the first RO and the first random access preamble corresponding to the first SSB are included in the first RO and the first random access preamble corresponding to the first SSB.
  • step S52 in the first RO, the first random access preamble is sent based on the first TRP.
  • the first RO and the first random access preamble correspond to the first SSB.
  • step S53 the second SSB is determined, as well as the second RO and the second random access preamble corresponding to the second SSB.
  • the terminal determines the second SSB, including the terminal determining the first SSB and the second SSB according to whether there is a corresponding CORESET#0, wherein among the first SSB and the second SSB, one SSB has a corresponding CORESET#0 , there is no corresponding CORESET#0 in another SSB.
  • the corresponding CORESET#0 exists in the first SSB and the corresponding CORESET#0 does not exist in the second SSB; or the corresponding CORESET#0 does not exist in the first SSB and the corresponding CORESET#0 exists in the second SSB.
  • the terminal can use the SSB index set indicated by the network device, and determine in the SSB index set that there is no second SSB of CORESET#0 in the beam direction.
  • step S54 in the second RO, a second random access preamble is sent based on the second TRP.
  • step S55 receive the RAR sent by the network device based on each TRP of at least two TRPs, and the RAR includes initial TA information.
  • step S56 MAC-CE information is received, and the MAC-CE information is used to indicate updated TA information.
  • step S57 TA information corresponding to each of the at least two TRPs is determined based on the updated TA information and the initial TA information.
  • the process of determining the TA of the M-TRP in the intra-cell based on the initial TA information and/or updated TA information please refer to the first MAC indication field indication through the RAR involved in the above embodiment.
  • the method, as well as the method indicated through the second MAC indication field of the MAC-CE, will not be described in detail here.
  • Embodiments of the present disclosure provide a communication method based on multiple TRPs.
  • TAs are respectively configured for each TRP in multiple TRPs, so that each TRP in multiple TRPs adopts its own TA to reduce the impact of uplink and downlink signals.
  • embodiments of the present disclosure also provide a multi-TRP-based communication method performed by a network device.
  • FIG 11 is a flow chart of a communication method based on multiple TRPs according to an exemplary embodiment. As shown in Figure 11, the communication method based on multiple TRPs can be used in network equipment. The method can include the following steps:
  • step S61 at least two TRPs that provide services to the terminal are determined.
  • step S62 TA information corresponding to each of the at least two TRPs is sent.
  • At least two TRPs include TRPs between different cells.
  • At least two TRPs include TRPs in the same cell.
  • the at least two TRPs include a first TRP and a second TRP.
  • the first TRP and the second TRP are TRPs between different cells, or TRPs within the same cell.
  • the first TRP and the second TRP are TRPs in the same cell, it can be determined that the first synchronization signal block of the control resource set 0 exists in the beam direction, and the first synchronization signal block corresponding to the TRP, as the first TRP. It is determined that the second synchronization signal block of the control resource set 0 does not exist in the beam direction, and the TRP corresponding to the second synchronization signal block is used as the second TRP.
  • the network device can send an SSB index set, and determine the SSB that does not have CORESET#0 in the beam direction in the SSB index set as the second SSB.
  • the network device receives the first random access preamble based on the first TRP at the first random access opportunity, and the first random access opportunity and the first random access preamble are received at the first random access opportunity.
  • a random access preamble corresponds to the first synchronization signal block.
  • the network device receives the second random access preamble based on the second TRP at the second random access opportunity, and the second random access opportunity and the second random access preamble correspond to the second synchronization signal block.
  • the second random access opportunity is determined based on indication information (such as PDCCH order) sent by the network device, or based on predefined rules.
  • the network device when it sends TA information corresponding to each of the at least two TRPs, it can send a random access response based on each of the at least two TRPs.
  • the random access response includes initial TA information, wherein the TA information corresponding to each TRP in the at least two TRPs is determined based on the initial TA information.
  • the network device sends MAC-CE information, and the MAC-CE information is used to indicate updated TA information.
  • the TA information of each TRP in at least two TRPs is determined based on the updated TA information and the initial TA information.
  • network equipment can achieve time alignment of uplink and downlink signals based on the TA information of multiple TRPs, reduce the impact of ISI, and improve system performance.
  • the multi-TRP-based communication method provided by the embodiments of the present disclosure is suitable for the interaction between a terminal and a network device to implement multi-TRP-based communication.
  • the terminal has the function of implementing the terminal involved in the above embodiment
  • the network device has the function of implementing the network device involved in the above embodiment.
  • embodiments of the present disclosure also provide a communication device based on multiple TRPs.
  • the multi-TRP-based communication device provided by the embodiments of the present disclosure includes hardware structures and/or software modules corresponding to each function.
  • the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to go beyond the scope of the technical solutions of the embodiments of the present disclosure.
  • FIG. 12 is a block diagram of a communication device based on multiple TRPs according to an exemplary embodiment.
  • the multi-TRP based communication device 100 may be applied to a terminal, for example, and includes a processing unit 101 and an acquisition unit 102 .
  • the processing unit 101 is configured to determine at least two TRPs that provide services for the terminal.
  • the obtaining unit 102 is configured to obtain TA information corresponding to each of the at least two TRPs.
  • At least two TRPs include TRPs between different cells.
  • At least two TRPs include TRPs in the same cell.
  • the at least two TRPs include a first TRP and a second TRP.
  • the processing unit is configured to determine at least two TRPs that provide services to the terminal in the following manner:
  • the TRP corresponding to the first SSB is used as the first TRP. It is determined that the second SSB of control resource set 0 does not exist in the beam direction, and the TRP corresponding to the second SSB is used as the second TRP.
  • the obtaining unit is configured to obtain an SSB set indicated by the network device, and the processing unit is configured to determine in the SSB set that there is no second SSB of control resource set 0 in the beam direction.
  • the communication device 100 based on multiple TRPs further includes a sending unit 103.
  • the sending unit 103 is configured to: at the first random access opportunity, send a first random access preamble based on the first TRP.
  • the access opportunity and the first random access preamble correspond to the first SSB.
  • a second random access preamble is sent based on the second TRP, and the second random access opportunity and the second random access preamble correspond to the second SSB.
  • the second random access opportunity is determined based on indication information sent by the network device, or based on predefined rules.
  • the acquisition unit 102 is configured to receive a RAR sent by the network device based on each of at least two TRPs, where the RAR includes initial TA information.
  • the processing unit 101 is configured to determine TA information corresponding to each of the at least two TRPs based on the initial TA information.
  • the obtaining unit 102 is configured to receive MAC-CE information, where the MAC-CE information is used to indicate updated TA information.
  • the processing unit 101 is configured to determine TA information corresponding to each of the at least two TRPs based on the updated TA information and the initial TA information.
  • Figure 13 is a block diagram of a communication device based on multiple TRPs according to an exemplary embodiment.
  • the multi-TRP-based communication device 200 can be applied to network equipment, for example, and includes a processing unit 201 and a sending unit 202 .
  • the processing unit 201 is configured to determine at least two transmitting and receiving points TRP that provide services for the terminal.
  • the sending unit 202 is configured to send TA information corresponding to each of the at least two TRPs.
  • At least two TRPs include TRPs between different cells.
  • At least two TRPs include TRPs in the same cell.
  • the at least two TRPs include a first TRP and a second TRP.
  • the processing unit 201 is configured to determine at least two TRPs that provide services for the terminal in the following manner:
  • the TRP corresponding to the first SSB is used as the first TRP. It is determined that the second SSB of control resource set 0 does not exist in the beam direction, and the TRP corresponding to the second SSB is used as the second TRP.
  • the sending unit 202 is configured to send an SSB set
  • the processing unit 201 is configured to use an SSB that does not have control resource set 0 in the beam direction in the SSB set as the second SSB.
  • the multi-TRP based communication device 200 further includes a receiving unit 203, and the receiving unit 203 is configured to:
  • the first random access preamble is received based on the first TRP, and the first random access opportunity and the first random access preamble correspond to the first SSB.
  • the second random access preamble is received based on the second TRP, and the second random access opportunity and the second random access preamble correspond to the second SSB.
  • the second random access opportunity is determined based on indication information sent by the network device, or based on predefined rules.
  • the sending unit 202 is configured to: send a RAR based on each TRP of at least two TRPs, where the RAR includes initial TA information.
  • TA information corresponding to each of the at least two TRPs is determined based on the initial TA information.
  • the sending unit 202 is further configured to: send MAC-CE information, where the MAC-CE information is used to indicate updated TA information.
  • the TA information of each TRP in at least two TRPs is determined based on the updated TA information and the initial TA information.
  • FIG. 14 is a block diagram illustrating a multi-TRP based communication device 300 according to an exemplary embodiment.
  • the device 300 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, or the like.
  • device 300 may include one or more of the following components: processing component 302, memory 304, power component 306, multimedia component 308, audio component 310, input/output (I/O) interface 312, sensor component 314, and Communication component 316.
  • Processing component 302 generally controls the overall operations of device 300, such as operations associated with display, phone calls, data communications, camera operations, and recording operations.
  • the processing component 302 may include one or more processors 320 to execute instructions to complete all or part of the steps of the above method.
  • processing component 302 may include one or more modules that facilitate interaction between processing component 302 and other components.
  • processing component 302 may include a multimedia module to facilitate interaction between multimedia component 308 and processing component 302.
  • Memory 304 is configured to store various types of data to support operations at device 300 . Examples of such data include instructions for any application or method operating on device 300, contact data, phonebook data, messages, pictures, videos, etc.
  • Memory 304 may be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EEPROM), Programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EEPROM erasable programmable read-only memory
  • EPROM Programmable read-only memory
  • PROM programmable read-only memory
  • ROM read-only memory
  • magnetic memory flash memory, magnetic or optical disk.
  • Power component 306 provides power to the various components of device 300 .
  • Power components 306 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to device 300 .
  • Multimedia component 308 includes a screen that provides an output interface between the device 300 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide action.
  • multimedia component 308 includes a front-facing camera and/or a rear-facing camera.
  • the front camera and/or the rear camera may receive external multimedia data.
  • Each front-facing camera and rear-facing camera can be a fixed optical lens system or have a focal length and optical zoom capabilities.
  • Audio component 310 is configured to output and/or input audio signals.
  • audio component 310 includes a microphone (MIC) configured to receive external audio signals when device 300 is in operating modes, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 304 or sent via communication component 316 .
  • audio component 310 also includes a speaker for outputting audio signals.
  • the I/O interface 312 provides an interface between the processing component 302 and a peripheral interface module, which may be a keyboard, a click wheel, a button, etc. These buttons may include, but are not limited to: Home button, Volume buttons, Start button, and Lock button.
  • Sensor component 314 includes one or more sensors for providing various aspects of status assessment for device 300 .
  • the sensor component 314 can detect the open/closed state of the device 300, the relative positioning of components, such as the display and keypad of the device 300, and the sensor component 314 can also detect a change in position of the device 300 or a component of the device 300. , the presence or absence of user contact with device 300 , device 300 orientation or acceleration/deceleration and temperature changes of device 300 .
  • Sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact.
  • Sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 314 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • Communication component 316 is configured to facilitate wired or wireless communication between apparatus 300 and other devices.
  • Device 300 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof.
  • the communication component 316 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 316 also includes a near field communication (NFC) module to facilitate short-range communications.
  • NFC near field communication
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • apparatus 300 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable Gate array (FPGA), controller, microcontroller, microprocessor or other electronic components are implemented for executing the above method.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable Gate array
  • controller microcontroller, microprocessor or other electronic components are implemented for executing the above method.
  • a non-transitory computer-readable storage medium including instructions such as a memory 304 including instructions, which can be executed by the processor 320 of the device 300 to complete the above method is also provided.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
  • FIG. 15 is a block diagram illustrating a communication device based on multiple TRPs according to an exemplary embodiment.
  • apparatus 400 may be provided as a network device.
  • apparatus 400 includes a processing component 422, which further includes one or more processors, and memory resources represented by memory 432 for storing instructions, such as application programs, executable by processing component 422.
  • the application program stored in memory 432 may include one or more modules, each corresponding to a set of instructions.
  • the processing component 422 is configured to execute instructions to perform the above-described method.
  • Device 400 may also include a power supply component 426 configured to perform power management of device 400, a wired or wireless network interface 450 configured to connect device 400 to a network, and an input-output (I/O) interface 458.
  • Device 400 may operate based on an operating system stored in memory 432, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.
  • a non-transitory computer-readable storage medium including instructions such as a memory 432 including instructions, which are executable by the processing component 422 of the apparatus 400 to complete the above method is also provided.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
  • “plurality” in this disclosure refers to two or more, and other quantifiers are similar.
  • “And/or” describes the relationship between related objects, indicating that there can be three relationships.
  • a and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.
  • the character “/” generally indicates that the related objects are in an “or” relationship.
  • the singular forms “a”, “the” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • first, second, etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other and do not imply a specific order or importance. In fact, expressions such as “first” and “second” can be used interchangeably.
  • first information may also be called second information, and similarly, the second information may also be called first information.

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Abstract

本公开是关于一种基于多发送接收点的通信方法、装置及存储介质。基于多发送接收点的通信方法，应用于终端，所述方法包括：确定为所述终端提供服务的至少两个发送接收点TRP；获取对应于所述至少两个TRP中各TRP的定时提前信息。通过本公开使得终端可以基于为终端提供服务的至少两个TRP中各TRP的TA信息进行通信，使得至少两个TRP中的各TRP各自实现上下行时间对齐，缓解上下行符号间干扰，降低系统性能损失。

Description

一种基于多发送接收点的通信方法、装置及存储介质 技术领域
本公开涉及通信技术领域，尤其涉及一种基于多发送接收点的通信方法、装置及存储介质。
背景技术
随着通信技术的发展，通信系统已演进为多输入多输出(Multiple Input Multiple Output，MIMO)的多发送接收点(Multiple Transmission Reception Point，M-TRP)系统。在MIMO M-TRP，网络设备(例如基站)可以使用多个TRP为终端提供服务。
MIMO M-TRP系统中，多个TRP采取一个定时提前量(Timing Advance，TA)进行传输，即根据一个TRP进行TA调整。然而，M-TRP系统中，针对不同小区间(inter-cell)或同小区内(intra-cell)的通信，通常不同TRP在不同的地理区域，且终端和不同TRP的距离不同，因此具有不同的传输时延。故，采用根据一个TRP进行TA调整的方式，可以在进行TA调整所依据的TRP处实现上下行时间同步，但在其他TRP处无法实现上下行时间同步，将带来上下行符号间干扰(Inter-symbol Interference，ISI)，进而导致系统性能损耗。
发明内容
为克服相关技术中存在的问题，本公开提供一种基于多发送接收点的通信方法、装置及存储介质。
根据本公开实施例的第一方面，提供一种基于多发送接收点的通信方法，应用于终端，所述方法包括：
确定为所述终端提供服务的至少两个发送接收点TRP；获取对应于所述至少两个TRP中各TRP的定时提前信息。
一种实施方式中，所述至少两个TRP包括不同小区间的TRP。
一种实施方式中，所述至少两个TRP包括同小区内的TRP。
一种实施方式中，所述至少两个TRP中包括第一TRP和第二TRP；
所述确定为所述终端提供服务的至少两个TRP，包括：
确定波束方向上存在控制资源集0的第一同步信号块，并将所述第一同步信号块所对应的TRP，作为第一TRP；确定波束方向上不存在控制资源集0的第二同步信号块，并将所述第二同步信号块所对应的TRP，作为第二TRP。
一种实施方式中，所述确定波束方向上不存在控制资源集0的第二同步信号块，包括：
获取网络设备指示的同步信号块集合，并在所述同步信号块集合中确定波束方向上不存在控制资源集0的第二同步信号块。
一种实施方式中，所述方法还包括：在第一随机接入时机，基于所述第一TRP发送第一随机接入前导码，所述第一随机接入时机和所述第一随机接入前导码对应所述第一同步信号块；在第二随机接入时机，基于所述第二TRP发送第二随机接入前导码，所述第二随机接入时机和所述第二随机接入前导码对应所述第二同步信号块。
一种实施方式中，所述第二随机接入时机基于网络设备发送的指示信息确定，或者基于预定义规则确定。
一种实施方式中，所述获取对应于所述至少两个TRP中各TRP的定时提前信息，包括：
接收网络设备基于所述至少两个TRP中各TRP发送的随机接入响应，所述随机接入响应中包括初始定时提前信息；基于所述初始定时提前信息，确定对应于所述至少两个TRP中各TRP的定时提前信息。
一种实施方式中，所述基于所述初始定时提前信息，确定对应于所述至少两个TRP中各TRP的定时提前信息，包括：
接收媒体接入控制-控制单元MAC-CE信息，所述MAC-CE信息用于指示更新的定时提前信息；基于所述更新的定时提前信息和所述初始定时提前信息，确定对应于所述至少两个TRP中各TRP的定时提前信息。
根据本公开实施例第二方面，提供一种基于多发送接收点的通信方法，应用于网络设备，所述方法包括：
确定为所述终端提供服务的至少两个发送接收点TRP；发送对应于所述至少两个TRP中各TRP的定时提前信息。
一种实施方式中，所述至少两个TRP包括不同小区间的TRP。
一种实施方式中，所述至少两个TRP包括同小区内的TRP。
一种实施方式中，所述至少两个TRP中包括第一TRP和第二TRP；
所述确定为所述终端提供服务的至少两个TRP，包括：
确定波束方向上存在控制资源集0的第一同步信号块，并将所述第一同步信号块所对应的TRP，作为第一TRP；确定波束方向上不存在控制资源集0的第二同步信号块，并将所述第二同步信号块所对应的TRP，作为第二TRP。
一种实施方式中，所述确定波束方向上不存在控制资源集0的第二同步信号块，包括：
发送同步信号块集合，将所述同步信号块集合中波束方向上不存在控制资源集0的同 步信号块作为第二同步信号块。
一种实施方式中，所述方法还包括：
在第一随机接入时机，基于所述第一TRP接收第一随机接入前导码，所述第一随机接入时机和所述第一随机接入前导码对应所述第一同步信号块；在第二随机接入时机，基于所述第二TRP接收第二随机接入前导码，所述第二随机接入时机和所述第二随机接入前导码对应所述第二同步信号块。
一种实施方式中，所述第二随机接入时机基于所述网络设备发送的指示信息确定，或者基于预定义规则确定。
一种实施方式中，所述发送对应于所述至少两个TRP中各TRP的定时提前信息，包括：
基于所述至少两个TRP中各TRP发送随机接入响应，所述随机接入响应中包括初始定时提前信息；对应于所述至少两个TRP中各TRP的定时提前信息基于所述初始定时提前信息确定。
一种实施方式中，所述方法还包括：发送媒体接入控制-控制单元MAC-CE信息，所述MAC-CE信息用于指示更新的定时提前信息；所述至少两个TRP中各TRP的定时提前信息基于所述更新的定时提前信息和所述初始定时提前信息确定。
根据本公开实施例第三方面，提供一种基于多发送接收点的通信装置，包括：
处理单元，被配置为确定为所述终端提供服务的至少两个发送接收点TRP；获取单元，被配置为获取对应于所述至少两个TRP中各TRP的定时提前信息。
一种实施方式中，所述至少两个TRP包括不同小区间的TRP。
一种实施方式中，所述至少两个TRP包括同小区内的TRP。
一种实施方式中，所述至少两个TRP中包括第一TRP和第二TRP；所述处理单元被配置为采用如下方式确定为所述终端提供服务的至少两个TRP：
确定波束方向上存在控制资源集0的第一同步信号块，并将所述第一同步信号块所对应的TRP，作为第一TRP；确定波束方向上不存在控制资源集0的第二同步信号块，并将所述第二同步信号块所对应的TRP，作为第二TRP。
一种实施方式中，所述获取单元被配置为获取网络设备指示的同步信号块集合，所述处理单元被配置为在所述同步信号块集合中确定波束方向上不存在控制资源集0的第二同步信号块。
一种实施方式中，所述基于多发送接收点的通信装置还包括发送单元，所述发送单元被配置为：在第一随机接入时机，基于所述第一TRP发送第一随机接入前导码，所述第一 随机接入时机和所述第一随机接入前导码对应所述第一同步信号块；在第二随机接入时机，基于所述第二TRP发送第二随机接入前导码，所述第二随机接入时机和所述第二随机接入前导码对应所述第二同步信号块。
一种实施方式中，所述第二随机接入时机基于网络设备发送的指示信息确定，或者基于预定义规则确定。
一种实施方式中，所述获取单元被配置为接收网络设备基于所述至少两个TRP中各TRP发送的随机接入响应，所述随机接入响应中包括初始定时提前信息；所述处理单元被配置为基于所述初始定时提前信息，确定对应于所述至少两个TRP中各TRP的定时提前信息。
一种实施方式中，所述获取单元被配置为接收媒体接入控制-控制单元MAC-CE信息，所述MAC-CE信息用于指示更新的定时提前信息；所述处理单元被配置为基于所述更新的定时提前信息和所述初始定时提前信息，确定对应于所述至少两个TRP中各TRP的定时提前信息。
根据本公开实施例第四方面，提供一种基于多发送接收点的通信装置，包括：
处理单元，被配置为确定为所述终端提供服务的至少两个发送接收点TRP；发送单元，被配置为发送对应于所述至少两个TRP中各TRP的定时提前信息。
一种实施方式中，所述至少两个TRP包括不同小区间的TRP。
一种实施方式中，所述至少两个TRP包括同小区内的TRP。
一种实施方式中，所述至少两个TRP中包括第一TRP和第二TRP；
所述处理单元被配置为采用如下方式确定为所述终端提供服务的至少两个TRP：
确定波束方向上存在控制资源集0的第一同步信号块，并将所述第一同步信号块所对应的TRP，作为第一TRP；确定波束方向上不存在控制资源集0的第二同步信号块，并将所述第二同步信号块所对应的TRP，作为第二TRP。
一种实施方式中，所述发送单元被配置为发送同步信号块集合，所述处理单元被配置为将所述同步信号块集合中波束方向上不存在控制资源集0的同步信号块作为第二同步信号块。
一种实施方式中，所述基于多发送接收点的通信装置还包括接收单元，所述接收单元被配置为：
在第一随机接入时机，基于所述第一TRP接收第一随机接入前导码，所述第一随机接入时机和所述第一随机接入前导码对应所述第一同步信号块；在第二随机接入时机，基于所述第二TRP接收第二随机接入前导码，所述第二随机接入时机和所述第二随机接入前导 码对应所述第二同步信号块。
一种实施方式中，所述第二随机接入时机基于所述网络设备发送的指示信息确定，或者基于预定义规则确定。
一种实施方式中，所述发送单元被配置为：基于所述至少两个TRP中各TRP发送随机接入响应，所述随机接入响应中包括初始定时提前信息；对应于所述至少两个TRP中各TRP的定时提前信息基于所述初始定时提前信息确定。
一种实施方式中，所述发送单元还被配置为：发送媒体接入控制-控制单元MAC-CE信息，所述MAC-CE信息用于指示更新的定时提前信息；所述至少两个TRP中各TRP的定时提前信息基于所述更新的定时提前信息和所述初始定时提前信息确定。
根据本公开实施例第五方面，提供一种基于多发送接收点的通信装置，包括：
处理器；用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：执行第一方面或者第一方面任意一种实施方式中所述的方法。
根据本公开实施例第六方面，提供一种基于多发送接收点的通信装置，包括：
处理器；用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：执行第二方面或者第二方面任意一种实施方式中所述的方法。
根据本公开实施例第七方面，提供一种存储介质，所述存储介质中存储有指令，当所述存储介质中的指令由终端的处理器执行时，使得终端能够执行第一方面或者第一方面任意一种实施方式中所述的方法。
根据本公开实施例第八方面，提供一种存储介质，所述存储介质中存储有指令，当所述存储介质中的指令由网络设备的处理器执行时，使得网络设备能够执行第二方面或者第二方面任意一种实施方式中所述的方法。
本公开的实施例提供的技术方案可以包括以下有益效果：通过获取对应于至少两个TRP中各TRP的TA信息，使得终端能够确定出为终端提供服务的至少两个TRP中各TRP对应的TA信息，使得终端可以基于为终端提供服务的至少两个TRP中各TRP的TA信息进行通信，使得至少两个TRP中的各TRP各自实现上下行时间对齐，缓解上下行符号间干扰。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
图1是根据一示例性实施例示出的一种无线通信系统示意图。
图2是根据一示例性实施例示出的一种TRP上下行信号发送接收示意图。
图3是根据一示例性实施例示出的另一种TRP上下行信号发送接收示意图。
图4是根据一示例性实施例示出的一种基于多TRP的通信方法的流程图。
图5是根据一示例性实施例示出的一种基于多TRP的通信方法的流程图。
图6是根据一示例性实施例示出的一种RAR的TAC指示域指示TA的信令结构示意图。
图7是根据一示例性实施例示出的一种基于多TRP的通信方法的流程图。
图8是根据一示例性实施例示出的一种MAC-CE的TAC指示域指示TA的信令结构示意图。
图9是根据一示例性实施例示出的一种基于多TRP的通信方法中确定intra-cell中M-TRP的TA的流程图。
图10是根据一示例性实施例示出的一种基于多TRP的通信方法中确定intra-cell中M-TRP的TA的流程图。
图11是根据一示例性实施例示出的一种基于多TRP的通信方法的流程图。
图12是根据一示例性实施例示出的一种基于多TRP的通信装置框图。
图13是根据一示例性实施例示出的一种基于多TRP的通信装置框图。
图14是根据一示例性实施例示出的一种用于基于多TRP的通信装置的框图。
图15是根据一示例性实施例示出的一种用于基于多TRP的通信装置的框图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。
本公开所涉及的基于多发送接收点的通信方法可以应用于图1所示的无线通信系统中。该网络系统可以包括网络设备110和终端120。可以理解的是，图1所示的无线通信系统仅是进行示意性说明，无线通信系统中还可包括其它网络设备，例如还可以包括核心网络设备、无线中继设备和无线回传设备等，在图1中未画出。本公开实施例对该无线通信系统中包括的网络设备数量和终端数量不做限定。
进一步可以理解的是，本公开实施例的无线通信系统，是一种提供无线通信功能的网 络。无线通信系统可以采用不同的通信技术，例如码分多址(Code Division Multiple Access,CDMA)、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency-Division Multiple Access，OFDMA)、单载波频分多址(Single Carrier FDMA，SC-FDMA)、载波侦听多路访问/冲突避免(Carrier Sense Multiple Access with Collision Avoidance)。根据不同网络的容量、速率、时延等因素可以将网络分为2G(英文：Generation)网络、3G网络、4G网络或者未来演进网络，如第五代无线通信系统(The 5th Generation Wireless Communication System，5G)网络，5G网络也可称为是新无线网络(New Radio，NR)。为了方便描述，本公开有时会将无线通信网络简称为网络。
进一步的，本公开中涉及的网络设备110也可以称为无线接入网络设备。该无线接入网络设备可以是：基站、演进型基站(evolved Node B，eNB)、家庭基站、无线保真(Wireless Fidelity，WIFI)系统中的接入点(Access Point，AP)、无线中继节点、无线回传节点或者传输点(Transmission Point，TP)等，还可以为NR系统中的gNB，或者，还可以是构成基站的组件或一部分设备等。当为车联网(V2X)通信系统时，网络设备还可以是车载设备。应理解，本公开的实施例中，对网络设备所采用的具体技术和具体设备形态不做限定。
进一步的，本公开中涉及的终端120，也可以称为终端设备、用户设备(User Equipment，UE)、移动台(Mobile Station，MS)、移动终端(Mobile Terminal，MT)等，是一种向用户提供语音和/或数据连通性的设备，例如，终端可以是具有无线连接功能的手持式设备、车载设备等。目前，一些终端的举例为：智能手机(Mobile Phone)、口袋计算机(Pocket Personal Computer，PPC)、掌上电脑、个人数字助理(Personal Digital Assistant，PDA)、笔记本电脑、平板电脑、可穿戴设备、或者车载设备等。此外，当为车联网(V2X)通信系统时，终端设备还可以是车载设备。应理解，本公开实施例对终端所采用的具体技术和具体设备形态不做限定。
本公开实施例中，网络设备110与终端120可以采用任意可行的无线通信技术以实现相互传输数据。其中，网络设备110向终端120发送数据所对应的传输通道称为下行信道(downlink，DL)，终端120向网络设备110发送数据所对应的传输通道称为上行信道(uplink，UL)。可以理解的是，本公开实施例中所涉及的网络设备可以是基站。当然网络设备还可以是其它任意可能的网络设备，终端可以是任意可能的终端，本公开不作限定。
可以理解的是，在5G方案中，一个基站可以包括一个或多个TRP。每个TRP可以对应不同方向的波束，以便于相应的终端进行通信。
相关技术中，在第17个公开版本的协议(Release 17，R17)中的MIMO M-TRP系统中，两个TRP仅考虑一个TA以及一个TA参考时间。假设两个TRP分别为TRP1和TRP2，且TA和TA参考时间仅对齐TRP1。由于两个TRP通常与UE的距离不同，而UE和不同TRP之间的传输具有不同的时延。因此，对于基站而言，在TRP1处下行信号和上行信号可以在时间上对齐，而在TRP2处下行信号和上行信号无法在时间上对齐，将带来上下行符号间的干扰ISI，进而导致系统性能损耗。
当考虑单TA方案时，系统发送接收时间如下表1所示。
表1单TA传输方案时间表
  TRP#1 TRP#2
与UE的距离 D 1 D 2
TRP发送时间 T T
传播时延 △t 1＝D 1/c △t 2＝D 2/c
UE接收时间 T+△t 1 T+△t 2
TA参考时间 T+△t 1 T+△t 1
TA T TA,1＝2△t 1 T TA,1＝2△t 1
UE发送时间 T+△t 1-T TA,1 T+△t 1-T TA,1
TRP接收时间 T+2△t 1-T TA,1 T+△t 1+△t 2-T TA,1
TRP接收时间偏移 2△t 1-T TA,1＝0 △t 1+△t 2-T TA,1＝△t 2-△t 1
图2是根据一示例性实施例示出的一种TRP上下行信号发送接收示意图。其中，图2中是以两个TRP(TRP1和TRP2)使用单TA信息(一个TA以及一个TA参考时间)为例进行说明。图2中，T 1是下行信号发送时间，T 2是UE从TRP1接收到下行信号的时间，T 3是UE从TRP2接收到下行信号的时间，T 4是UE向TRP1和TRP2发送上行信号的时间，T 5是TRP2从UE接收到上行信号的时间。若保证上下行信号时间对齐，则TRP从UE接收到的上行信号时间也应为T1。由图2可知，当采取单TA方案时，TRP1从UE接收到上行信号的时间为T1，TRP1的上下行信号时间对齐。但TRP2从UE接收到上行信号的时间不为T1，故TRP2上下行信号存在时间不对齐现象。
在R17的标准化过程中，针对多波束(Multi-beam)，多TRP不同小区间(inter-cell M-TRP)以及多TRP的物理下行控制信道/物理上行控制信道/物理上行共享信道(M-TRP PDCCH/PUCCH/PUSCH)中均简单讨论过两个TA的场景，但最终没有达成结论。在第三代合作伙伴项目(The 3rd Generation Partnership Project，3GPP)第94次无线接入网络(Radio  Access Network，RAN)会议中，给出了Rel-18MIMO演进技术的工作项目描述。其中，考虑基于多下行控制信息(Multiple Downlink Control Information，M-DCI)的M-TRP系统采用两个TA进行传输。
其中，采用多TA传输方案时，系统发送接收时间如下表2所示。
表2多TA传输方案时间表
  TRP#1 TRP#2
与UE的距离 D 1 D 2
TRP发送时间 T T
传播时延 △t 1＝D 1/c △t 2＝D 2/c
UE接收时间 T+△t 1 T+△t 2
TA参考时间 T+△t 1 T+△t 2
TA T TA,1＝2△t 1 T TA,2＝2△t 2
UE发送时间 T+△t 1-T TA,1 T+△t 2-T TA,2
TRP接收时间 T+2△t 1-T TA,1 T+2△t 2-T TA,2
TRP接收时间偏移 2△t 1-T TA,1＝0 2△t 2-T TA,2＝0
图3是根据一示例性实施例示出的一种TRP上下行信号发送接收示意图。其中，图3中是以两个TRP(TRP1和TRP2)使用多TA信息(2个TA以及2个TA参考时间)为例进行说明。图3中，T 1是下行信号发送时间，T 2是UE从TRP1接收到下行信号的时间，T 3是UE从TRP2接收到下行信号的时间，T 4是UE向TRP1发送上行信号的时间，T 5是UE向TRP2发送上行信号的时间。由图3可知，TRP1从UE接收到上行信号的时间为T1，故TRP1的上下行信号时间对齐。TRP2从UE接收到上行信号的时间为T1，故TRP2上下行信号存在时间对齐。当采取多TA方案时，由于每个TRP采取各自的TA，因此，TRP1的上下行信号时间对齐，TRP2的上下行信号时间也对齐。
有鉴于此，本公开实施例提供一种基于多TRP的通信方法，在该方法中，针对多个TRP中各TRP分别配置TA，使得多个TRP中的每个TRP采取各自的TA，以降低因上下行信号时间不对齐带来的系统性能损失。
一种实施方式中，本公开实施例中针对包括至少两个TRP的多TRP的通信方法。其中，多个TRP中任意两个TRP可以是不同的TRP。
图4是根据一示例性实施例示出的一种基于多TRP的通信方法的流程图，如图4所示，该基于多TRP的通信方法可以用于终端中，该方法可以包括以下步骤：
在步骤S11中，确定为终端提供服务的至少两个TRP。
在一些例子中，本公开实施例中为终端提供服务的至少两个TRP中任意两个TRP可以是不同的TRP，例如任意两个不同的TRP可以称为第一TRP和第二TRP。
在步骤S12中，获取对应于至少两个TRP中各TRP的TA信息。
本公开实施例中，为终端提供服务的至少两个TRP中的每个TRP对应有各自的TA信息。
其中，本公开实施例中涉及的TA信息可以包括TA值，也可以包括TA参考时间，还可以是包括TA值和TA参考时间。
本公开实施例提供的基于多TRP的通信方法中，终端获取为终端提供服务的至少两个TRP中的各TRP的TA信息，进而使得至少两个TRP中的每个TRP对应有各自的TA信息，故后续终端基于多TRP进行通信时，可以使得多TRP中的每个TRP基于各自的TA信息，能够实现上下行信号时间的对齐，提高系统性能。
本公开实施例提供的基于多TRP的通信方法中，为终端提供服务的至少两个TRP中的各TRP包括不同小区间(inter-cell)的TRP。
可以理解的是，本公开实施例提供的基于多TRP的通信方法，至少两个TRP中的各TRP包括inter-cell TRP，可以理解为是一种inter-cell M-TRP系统中的多TA通信方法。
本公开实施例提供的基于多TRP的通信方法中，为终端提供服务的至少两个TRP中的各TRP包括同小区内(intra-cell)的TRP。
可以理解的是，本公开实施例提供的基于多TRP的通信方法，至少两个TRP中的各TRP包括intra-cell TRP，可以理解为是一种intra-cell M-TRP系统中的多TA通信方法。
本公开实施例提供的基于多TRP的通信方法中，提供了获取至少两个TRP中任意两个不同TRP对应的TA信息的方法。
本公开实施例中，为方便描述将至少两个TRP中任意两个不同的TRP可以称为第一TRP和第二TRP。
本公开实施例中，第一TRP和第二TRP可以是inter-cell TRP。
本公开实施例提供一种获取inter-cell TRP中各TRP的TA信息的方法。
其中，本公开实施例中获取inter-cell TRP中各TRP的TA信息，可以基于终端进行随机接入的过程进行获取。
一种实施方式中，终端使用第一TRP和第二TRP进行独立的随机接入过程，分别向第一TRP和第二TRP发送随机接入前导码，并获取网络设备基于第一TRP和第二TRP分别发送的随机接入响应(Random Access Response，RAR)，将初始TA信息携带在RAR中。
图5是根据一示例性实施例示出的一种基于多TRP的通信方法的流程图，如图5所示，该基于多TRP的通信方法可以用于终端中，该方法可以包括以下步骤：
在步骤S21中，接收网络设备基于至少两个TRP中各TRP发送的RAR，RAR中包括初始TA信息。
其中，初始TA信息可以理解为是初始TA值。
在步骤S22中，基于初始TA信息，确定对应于至少两个TRP中各TRP的TA信息。
本公开实施例提供的基于多TRP的通信方法，针对inter-cell TRP中各TRP的TA信息，可以基于各TRP的独立随机接入过程中RAR获取，实现了多TA信息的获取。
本公开实施例中，inter-cell TRP中各TRP的TA信息可以由RAR中包括的定时提前量命令(Time Advance Command，TAC)域指示。
图6是根据一示例性实施例示出的一种RAR的TAC指示域指示TA的信令结构示意图。参阅图6所示，RAR的TAC指示域指示TA信息的信令结构为两字节(Byte，B)16bit结构。其中，包括1bit保留位R、12bit TAC以及3bit UL允许指令(grant)。UL Grant用于指示UE在相应的上行信道上允许发送数据。
本公开实施例中，针对至少两个TRP中的每个TRP各自对应的TA信息，可以通过对应图6所示的信令结构通过RAR的TAC指示域指示TA信息。其中，本公开实施例中可以通过对应TRP数量的信令指示多个TA，也可以通过一个信令指示多个TA。
本公开实施例中，确定TRP的TA信息时，可以采用如下公式(1)计算得到。
T TA＝(N TA+N TA,offset)T c     (1)
其中，T TA为确定的TRP的TA值，T c表示为基本时间单元，例如可以是5G NR的基本时间单元，如T c＝0.509ns。ns为时间单位，即纳秒。N TA,offset可以通过信令预先配置。在一些例子中，可以通过ServingCellConfigCommon或ServingCellConfigCommonSIB中的n-TimingAdvanceOffset进行配置。当然，若未配置N TA,offset，则可以设定为频率范围(Frequency Range，FR)1的默认值(或称缺省值)，即25600。可以理解，具体的配置值可以参考3GPP TS 38.133中Table 7.1.2-2，本公开不作限定。N TA可以是在随机接入过程中由随机接入响应(Random Access Response，RAR)进行指示。在一些例子中，若子载波的间隔为2 μ·15kHz时，可以由RAR中TAC指示初始N TA，例如可以通过公式(2)计算初始N TA，例如，
N TA＝T A·16·64/2 μ    (2)
其中，T A为RAR TAC指示的时间提前参数值。在一些例子中，T A可以由12个比特位(bit)进行指示。因此，T A取值可以为0，1，2，…，3846。
基于上述示例，本公开中以第一TRP和第二TRP为例进行说明。
RAR TAC指示的初始TA公式可以为如下公式(3)和(4)
N TA,1＝T A,1·16·64/2 μ                           (3)
其中，N TA,1为第一TRP的初始TA信息，T A,1＝0,1,2,…,3846。
N TA,2＝T A,2·16·64/2 μ                           (4)
其中，N TA,2为第二TRP的初始TA信息，T A,2＝0,1,2,…,3846。
进一步的，本公开实施例提供的基于多TRP的通信方法中，可以由媒体接入控制-控制单元(Medium Access Control-Control Element，MAC-CE)发送TA更新信息，例如发送更新的TA值。
图7是根据一示例性实施例示出的一种基于多TRP的通信方法的流程图，如图7所示，该基于多TRP的通信方法可以用于终端中，该方法可以包括以下步骤：
在步骤S31中，接收MAC-CE信息，MAC-CE信息用于指示更新的TA信息。
在步骤S32中，基于更新的TA信息和初始TA信息，确定对应于至少两个TRP中各TRP的TA信息。
本公开实施例提供的基于多TRP的通信方法，针对inter-cell TRP中各TRP的TA信息，可以基于MAC-CE信息获取更新的TA信息，基于更新的TA信息和初始TA信息确定至少两个TRP中各TRP的TA信息获取，实现了多TA信息的获取。
本公开实施例中，inter-cell TRP中各TRP对应的更新的TA信息可以由MAC-CE中包括的TAC指示域指示。
其中，本公开实施例中为描述方便，将用于指示初始TA信息的TAC称为第一TAC，例如图6中的TAC。将用于指示更新的TA信息的TAC称为第二TAC。例如图8中的TAC。
图8是根据一示例性实施例示出的一种MAC-CE的TAC指示域指示TA的信令结构示意图。参阅图8所示，MAC-CE的TAC指示域指示更新的TA信息的信令结构为1字节(Byte，B)8bit结构。其中，包括2bit定时提前量组标识(Timing Advance Group Identification，TAG ID)、6bit TAC。
其中，本公开实施例中可以通过对应TRP数量的信令指示多个更新的TA信息，也可以通过一个信令指示多个TA更新的TA信息。
本公开实施例中，针对至少两个TRP中每个TRP各自对应的TA信息，可以通过对应图6所示的信令结构通过RAR的TAC指示域指示TA初始信息并通过图8所示的信令结果通过MAC-CE的TAC指示域指示更新的TA信息。
本公开实施例中，确定TRP的TA信息时，可以采用如下公式5计算得到。
N TA,new＝N TA,old+(T A-31)·16·64/2 μ     (5)
其中N TA,old是RAR指示的初始TA，T A是MAC-CE指示的更新的TA信息。其中，T A＝0,1,2,…,63，由6比特指示。
基于上述示例，本公开中以第一TRP和第二TRP为例进行说明。
MAC-CE TAC指示更新的TA如下公式6和公式7
N TA,new,1＝N TA,old+(T A,1-31)·16·64/2 μ     (6)
N TA,new,2＝N TA,old+(T A,2-31)·16·64/2 μ      (7)
其中，T A,1为第一TRP的更新的TA，T A,1＝0,1,…,63。T A,2为第二TRP的更新的TA，T A,2＝0,1,…,63。
本公开实施例中，对于inter-cell M-TRP系统，不同TRP采取独立的随机接入过程，终端分别给不同TRP(例如第一TRP和第二TRP)发送随机接入前导码，以此获取每个TRP的TA，随后由RAR和MAC-CE中的TAC分别或同时为不同TRP指示初始TA和更新的TA。其中，“分别指示”表示不同信令指示不同TA，“同时指示”表示一个信令指示不同TA。
可以理解的是，本公开实施例中，inter-cell M-TRP系统中TRP数量的典型值为2，即包括第一TRP和第二TRP。
本公开实施例提供一种获取intra-cell TRP中各TRP的TA信息的方法。
其中，本公开实施例中获取intra-cell TRP中各TRP的TA信息，可以基于终端进行随机接入的过程进行获取。
其中，不同TRP可以对应不同控制资源集池索引(Control Resource Set PoolIndex，CORESET PoolIndex)。
本公开实施例针对intra-cell TRP中各TRP的TA信息可以通过SSB波束方向是否有CORESET#0来判断不同的TRP。
其中，本公开实施例中intra-cell M-TRP系统中，可以基于至少两个TRP分别进行独立的随机接入，并基于终端进行随机接入的过程获取各TRP的TA信息。
其中，本公开实施例中针对intra-cell M-TRP系统中，可以基于指定TRP发送随机接入前导码，例如通过包括CORESET#0的TRP发送随机接入前导码，后续称为第一TRP。终端基于第一TRP发起随机接入发送随机接入前导码，后续基站使用物理下行控制信道(Physical Downlink Control Channel，PDCCH)序列(order)指示其他TRP(以下称为第 二TRP)的随机接入，或者由终端自己发起随机接入，进而获取多个TRP的TA信息。换言之，一种实施方式中，第二随机接入时机基于网络设备发送的指示信息确定，或者基于预定义规则确定。
以下以至少两个TRP中包括第一TRP和第二TRP为例，对确定为终端提供服务的至少两个TRP的过程进行说明。
其中，终端根据是否存在对应的CORESET#0，确定第一SSB和第二SSB，其中第一SSB和第二SSB中，一个SSB存在对应的CORESET#0，另一个SSB不存在对应的CORESET#0。其中，存在对应的CORESET#0的SSB所对应的TRP可以理解为是第一TRP，不存在CORESET#0的SSB所对应的TRP可以理解为是第二TRP。
图9是根据一示例性实施例示出的一种基于多TRP的通信方法中确定intra-cell中M-TRP的TA的流程图，如图9所示，该基于多TRP的通信方法可以用于终端中，该方法可以包括以下步骤：
在步骤S41中，确定波束方向上存在CORESET#0的第一同步信号块(Synchronization Signal/PBCH Block，SSB)，并将第一SSB所对应的TRP，作为第一TRP。
在步骤S42中，确定波束方向上不存在CORESET#0的第二SSB，并将第二SSB所对应的TRP，作为第二TRP。
本公开实施例中，针对intra-cell M-TRP系统中，通过监测SSB波束方向上是否存在CORESET#0确定第一TRP和第二TRP，并基于第一TRP和第二TRP进行独立的随机接入，进而可以获取到第一TRP和第二TRP的TA信息。
本公开实施例提供的基于多TRP的通信方法中，终端通过接收并监测CORESET#0和系统信息块(System Information Block，SIB)，可以获得第一SSB对应的第一随机接入时机(PRACH Occasion，RO)和第一随机接入前导码。在第一随机接入时机，基于第一TRP发送第一随机接入前导码，第一RO和第一随机接入前导码对应第一SSB。
其中，可以理解的是，本公开实施例中，终端即使是针对第一SSB发起随机接入，若第一SSB没有CORESET#0，由于需要根据CORESET#0和SIB获得随机接入资源，因此也需要监听其他存在CORESET#0的SSB波束方向。
本公开实施例中，终端确定第二TRP时，可以确定第二SSB，以及第二SSB对应的第二RO和第二随机接入前导码，并在第二RO发送第二随机接入前导码。
可以理解的是，本公开实施例中在确定第二SSB时，可以由网络设备指示第二SSB所在的同步信号块集合(SSB index集合)，终端从SSB index集合中确定第二SSB。
一种实施方式中，确定波束方向上不存在CORESET#0的第二SSB，包括：获取网络 设备指示的SSB index集合，并在SSB index集合中确定波束方向上不存在CORESET#0的第二SSB。
本公开实施例提供的基于多TRP的通信方法中确定intra-cell中M-TRP的TA的方法中，终端基于多个TRP中的每个TRP单独发送了随机接入前导码后，可以接收网络设备发送的RAR，并基于该RAR获取到对应TRP的TA。
一种实施方式中，终端接收网络设备基于至少两个TRP中各TRP发送的RAR，RAR中包括初始TA信息。终端基于初始TA信息，确定对应于至少两个TRP中各TRP的TA信息。
一种实施方式中，终端接收MAC-CE信息，MAC-CE信息用于指示更新的TA信息。终端基于更新的TA信息和初始TA信息，确定对应于至少两个TRP中各TRP的TA信息。
图10是根据一示例性实施例示出的一种基于多TRP的通信方法中确定intra-cell中M-TRP的TA的流程图，如图10所示，该基于多TRP的通信方法可以用于终端中，该方法可以包括以下步骤：
在步骤S51中，接收并监测CORESET#0和SIB，并获取波束方向上存在CORESET#0的第一SSB。
其中，第一SSB对应的第一RO和第一随机接入前导码。
在步骤S52中，在第一RO，基于第一TRP发送第一随机接入前导码。
其中，第一RO和第一随机接入前导码对应第一SSB。
在步骤S53中，确定第二SSB，以及第二SSB对应的第二RO和第二随机接入前导码。
本公开实施例中，终端确定第二SSB，包括终端根据是否存在对应的CORESET#0，确定第一SSB和第二SSB，其中第一SSB和第二SSB中，一个SSB存在对应的CORESET#0，另一个SSB不存在对应的CORESET#0。
本公开实施例中，第一SSB存在对应的CORESET#0，第二SSB不存在对应的CORESET#0；或第一SSB不存在对应的CORESET#0，第二SSB存在对应的CORESET#0。
其中，终端可以网络设备指示的SSB index集合，并在SSB index集合中确定波束方向上不存在CORESET#0的第二SSB。
在步骤S54中，在第二RO，基于第二TRP发送第二随机接入前导码。
在步骤S55中，接收网络设备基于至少两个TRP中各TRP发送的RAR，RAR中包括初始TA信息。
在步骤S56中，接收MAC-CE信息，MAC-CE信息用于指示更新的TA信息。
在步骤S57中，基于更新的TA信息和初始TA信息，确定对应于至少两个TRP中各TRP的TA信息。
其中，本公开实施例中，针对intra-cell中M-TRP的TA基于初始TA信息和/或更新的TA信息确定的过程，可参阅上述实施例中涉及的通过RAR的第一MAC指示域指示的方式，以及通过MAC-CE的第二MAC指示域指示的方式，具体在此不再详述。
本公开实施例提供一种基于多TRP的通信方法，在该方法中，针对多个TRP中各TRP分别配置TA，使得多个TRP中的每个TRP采取各自的TA，以降低因上下行信号时间不对齐造成的系统性能损耗。
基于相同的构思，本公开实施例还提供一种由网络设备执行的基于多TRP的通信方法。
图11是根据一示例性实施例示出的一种基于多TRP的通信方法的流程图，如图11所示，该基于多TRP的通信方法可以用于网络设备中，该方法可以包括以下步骤：
在步骤S61中，确定为终端提供服务的至少两个TRP。
在步骤S62中，发送对应于至少两个TRP中各TRP的TA信息。
一种实施方式中，至少两个TRP包括不同小区间的TRP。
一种实施方式中，至少两个TRP包括同小区内的TRP。
一种实施方式中，至少两个TRP中包括第一TRP和第二TRP。其中，第一TRP和第二TRP为不同小区间的TRP，或者为同小区内的TRP。
本公开实施例中，第一TRP和第二TRP为同小区内的TRP的情况下，可以确定波束方向上存在控制资源集0的第一同步信号块，并将第一同步信号块所对应的TRP，作为第一TRP。确定波束方向上不存在控制资源集0的第二同步信号块，并将第二同步信号块所对应的TRP，作为第二TRP。
本公开实施例提供的基于多TRP的通信方法中，网络设备可以发送SSB index集合，并将SSB index集合中波束方向上不存在CORESET#0的SSB确定为第二SSB。
可以理解的是，本公开实施例提供的基于多TRP的通信方法中，网络设备在第一随机接入时机，基于第一TRP接收第一随机接入前导码，第一随机接入时机和第一随机接入前导码对应第一同步信号块。网络设备在第二随机接入时机，基于第二TRP接收第二随机接入前导码，第二随机接入时机和第二随机接入前导码对应第二同步信号块。
一种实施方式中，第二随机接入时机基于网络设备发送的指示信息(例如PDCCH order)确定，或者基于预定义规则确定。
本公开实施例提供的基于多TRP的通信方法中，网络设备发送对应于至少两个TRP中各TRP的TA信息时，可以基于至少两个TRP中各TRP发送随机接入响应，随机接入响应中包括初始TA信息，其中，对应于至少两个TRP中各TRP的TA信息基于初始TA信息确定。
本公开实施例提供的基于多TRP的通信方法中，网络设备发送MAC-CE信息，MAC-CE信息用于指示更新的TA信息。其中，至少两个TRP中各TRP的TA信息基于更新的TA信息和初始TA信息确定。
可以理解的是，本公开实施例中网络设备基于多TRP的通信过程中涉及的一些内容，与终端基于多TRP的通信执行过程类似，本公开实施例在此不再详述，对于描述不够详尽的地方可以参阅终端侧基于多TRP的通信过程。
本公开实施例提供的基于多TRP的通信方法，网络设备可以基于多TRP的TA信息，实现上下行信号的时间对齐，降低ISI影响，提高系统性能。
进一步可以理解的是，本公开实施例提供的基于多TRP的通信方法适用于终端与网络设备交互实现基于多TRP的通信。在终端与网络设备交互实现基于多TRP的通信过程中，终端具有实现上述实施例涉及的终端功能，网络设备具有实现上述实施例涉及的网络设备的功能，具体可参阅上述实施例的相关描述，在此不再详述。
需要说明的是，本领域内技术人员可以理解，本公开实施例上述涉及的各种实施方式/实施例中可以配合前述的实施例使用，也可以是独立使用。无论是单独使用还是配合前述的实施例一起使用，其实现原理类似。本公开实施中，部分实施例中是以一起使用的实施方式进行说明的。当然，本领域内技术人员可以理解，这样的举例说明并非对本公开实施例的限定。
基于相同的构思，本公开实施例还提供一种基于多TRP的通信装置。
可以理解的是，本公开实施例提供的基于多TRP的通信装置为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。结合本公开实施例中所公开的各示例的单元及算法步骤，本公开实施例能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同的方法来实现所描述的功能，但是这种实现不应认为超出本公开实施例的技术方案的范围。
图12是根据一示例性实施例示出的一种基于多TRP的通信装置框图。参照图12，该基于多TRP的通信装置100，例如可以应用于终端，包括处理单元101和获取单元102。
其中，处理单元101，被配置为确定为终端提供服务的至少两个TRP。获取单元102， 被配置为获取对应于至少两个TRP中各TRP的TA信息。
一种实施方式中，至少两个TRP包括不同小区间的TRP。
一种实施方式中，至少两个TRP包括同小区内的TRP。
一种实施方式中，至少两个TRP中包括第一TRP和第二TRP。所处处理单元被配置为采用如下方式确定为终端提供服务的至少两个TRP：
确定波束方向上存在控制资源集0的第一SSB，并将第一SSB所对应的TRP，作为第一TRP。确定波束方向上不存在控制资源集0的第二SSB，并将第二SSB所对应的TRP，作为第二TRP。
一种实施方式中，获取单元被配置为获取网络设备指示的SSB集合，处理单元被配置为在SSB集合中确定波束方向上不存在控制资源集0的第二SSB。
一种实施方式中，基于多TRP的通信装置100还包括发送单元103，发送单元103被配置为：在第一随机接入时机，基于第一TRP发送第一随机接入前导码，第一随机接入时机和第一随机接入前导码对应第一SSB。在第二随机接入时机，基于第二TRP发送第二随机接入前导码，第二随机接入时机和第二随机接入前导码对应第二SSB。
一种实施方式中，第二随机接入时机基于网络设备发送的指示信息确定，或者基于预定义规则确定。
一种实施方式中，获取单元102被配置为接收网络设备基于至少两个TRP中各TRP发送的RAR，RAR中包括初始TA信息。处理单元101被配置为基于初始TA信息，确定对应于至少两个TRP中各TRP的TA信息。
一种实施方式中，获取单元102被配置为接收MAC-CE信息，MAC-CE信息用于指示更新的TA信息。处理单元101被配置为基于更新的TA信息和初始TA信息，确定对应于至少两个TRP中各TRP的TA信息。
图13是根据一示例性实施例示出的一种基于多TRP的通信装置框图。参照图13，该基于多TRP的通信装置200，例如可以应用于网络设备，包括处理单元201和发送单元202。
处理单元201，被配置为确定为终端提供服务的至少两个发送接收点TRP。发送单元202，被配置为发送对应于至少两个TRP中各TRP的TA信息。
一种实施方式中，至少两个TRP包括不同小区间的TRP。
一种实施方式中，至少两个TRP包括同小区内的TRP。
一种实施方式中，至少两个TRP中包括第一TRP和第二TRP。
处理单元201被配置为采用如下方式确定为终端提供服务的至少两个TRP：
确定波束方向上存在控制资源集0的第一SSB，并将第一SSB所对应的TRP，作为第一TRP。确定波束方向上不存在控制资源集0的第二SSB，并将第二SSB所对应的TRP，作为第二TRP。
一种实施方式中，发送单元202被配置为发送SSB集合，处理单元201被配置为将SSB集合中波束方向上不存在控制资源集0的SSB作为第二SSB。
一种实施方式中，基于多TRP的通信装置200还包括接收单元203，接收单元203被配置为：
在第一随机接入时机，基于第一TRP接收第一随机接入前导码，第一随机接入时机和第一随机接入前导码对应第一SSB。在第二随机接入时机，基于第二TRP接收第二随机接入前导码，第二随机接入时机和第二随机接入前导码对应第二SSB。
一种实施方式中，第二随机接入时机基于网络设备发送的指示信息确定，或者基于预定义规则确定。
一种实施方式中，发送单元202被配置为：基于至少两个TRP中各TRP发送RAR，RAR中包括初始TA信息。对应于至少两个TRP中各TRP的TA信息基于初始TA信息确定。
一种实施方式中，发送单元202还被配置为：发送MAC-CE信息，MAC-CE信息用于指示更新的TA信息。至少两个TRP中各TRP的TA信息基于更新的TA信息和初始TA信息确定。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
图14是根据一示例性实施例示出的一种用于基于多TRP的通信装置300的框图。例如，装置300可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图14，装置300可以包括以下一个或多个组件：处理组件302，存储器304，电力组件306，多媒体组件308，音频组件310，输入/输出(I/O)接口312，传感器组件314，以及通信组件316。
处理组件302通常控制装置300的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件302可以包括一个或多个处理器320来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件302可以包括一个或多个模块，便于处理组件302和其他组件之间的交互。例如，处理组件302可以包括多媒体模块，以方便多媒体组件308和处理组件302之间的交互。
存储器304被配置为存储各种类型的数据以支持在装置300的操作。这些数据的示例包括用于在装置300上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器304可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电力组件306为装置300的各种组件提供电力。电力组件306可以包括电源管理系统，一个或多个电源，及其他与为装置300生成、管理和分配电力相关联的组件。
多媒体组件308包括在所述装置300和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件308包括一个前置摄像头和/或后置摄像头。当装置300处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件310被配置为输出和/或输入音频信号。例如，音频组件310包括一个麦克风(MIC)，当装置300处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器304或经由通信组件316发送。在一些实施例中，音频组件310还包括一个扬声器，用于输出音频信号。
I/O接口312为处理组件302和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件314包括一个或多个传感器，用于为装置300提供各个方面的状态评估。例如，传感器组件314可以检测到装置300的打开/关闭状态，组件的相对定位，例如所述组件为装置300的显示器和小键盘，传感器组件314还可以检测装置300或装置300一个组件的位置改变，用户与装置300接触的存在或不存在，装置300方位或加速/减速和装置300的温度变化。传感器组件314可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件314还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件314还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件316被配置为便于装置300和其他设备之间有线或无线方式的通信。装置300可以接入基于通信标准的无线网络，如WiFi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件316经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件316还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置300可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器304，上述指令可由装置300的处理器320执行以完成上述方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
图15是根据一示例性实施例示出的一种用于基于多TRP的通信装置的框图。例如，装置400可以被提供为一网络设备。参照图15，装置400包括处理组件422，其进一步包括一个或多个处理器，以及由存储器432所代表的存储器资源，用于存储可由处理组件422的执行的指令，例如应用程序。存储器432中存储的应用程序可以包括一个或一个以上的每一个对应于一组指令的模块。此外，处理组件422被配置为执行指令，以执行上述方法。
装置400还可以包括一个电源组件426被配置为执行装置400的电源管理，一个有线或无线网络接口450被配置为将装置400连接到网络，和一个输入输出(I/O)接口458。装置400可以操作基于存储在存储器432的操作系统，例如Windows ServerTM，Mac OS XTM，UnixTM,LinuxTM，FreeBSDTM或类似。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器432，上述指令可由装置400的处理组件422执行以完成上述方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
进一步可以理解的是，本公开中“多个”是指两个或两个以上，其它量词与之类似。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
进一步可以理解的是，术语“第一”、“第二”等用于描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开，并不表示特定的顺序或者重要程度。实际上，“第一”、“第二”等表述完全可以互换使用。例如，在不脱离本公开范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。
进一步可以理解的是，本公开实施例中尽管在附图中以特定的顺序描述操作，但是不应将其理解为要求按照所示的特定顺序或是串行顺序来执行这些操作，或是要求执行全部所示的操作以得到期望的结果。在特定环境中，多任务和并行处理可能是有利的。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利范围来限制。

Claims (24)

  1. 一种基于多发送接收点的通信方法，其特征在于，应用于终端，所述方法包括：
    确定为所述终端提供服务的至少两个发送接收点TRP；
    获取对应于所述至少两个TRP中各TRP的定时提前信息。
  2. 根据权利要求1所述的方法，其特征在于，所述至少两个TRP包括不同小区间的TRP。
  3. 根据权利要求1所述的方法，其特征在于，所述至少两个TRP包括同小区内的TRP。
  4. 根据权利要求3所述的方法，其特征在于，所述至少两个TRP中包括第一TRP和第二TRP；
    所述确定为所述终端提供服务的至少两个TRP，包括：
    确定波束方向上存在控制资源集0的第一同步信号块，并将所述第一同步信号块所对应的TRP，作为第一TRP；
    确定波束方向上不存在控制资源集0的第二同步信号块，并将所述第二同步信号块所对应的TRP，作为第二TRP。
  5. 根据权利要求4所述的方法，其特征在于，所述确定波束方向上不存在控制资源集0的第二同步信号块，包括：
    获取网络设备指示的同步信号块集合，并在所述同步信号块集合中确定波束方向上不存在控制资源集0的第二同步信号块。
  6. 根据权利要求4或5所述的方法，其特征在于，所述方法还包括：
    在第一随机接入时机，基于所述第一TRP发送第一随机接入前导码，所述第一随机接入时机和所述第一随机接入前导码对应所述第一同步信号块；
    在第二随机接入时机，基于所述第二TRP发送第二随机接入前导码，所述第二随机接入时机和所述第二随机接入前导码对应所述第二同步信号块。
  7. 根据权利要求6所述的方法，其特征在于，所述第二随机接入时机基于网络设备发送的指示信息确定，或者基于预定义规则确定。
  8. 根据权利要求1至7中任意一项所述的方法，其特征在于，所述获取对应于所述至少两个TRP中各TRP的定时提前信息，包括：
    接收网络设备基于所述至少两个TRP中各TRP发送的随机接入响应，所述随机接入响应中包括初始定时提前信息；
    基于所述初始定时提前信息，确定对应于所述至少两个TRP中各TRP的定时提前信息。
  9. 根据权利要求8所述的方法，其特征在于，所述基于所述初始定时提前信息，确定对应于所述至少两个TRP中各TRP的定时提前信息，包括：
    接收媒体接入控制-控制单元MAC-CE信息，所述MAC-CE信息用于指示更新的定时提前信息；
    基于所述更新的定时提前信息和所述初始定时提前信息，确定对应于所述至少两个TRP中各TRP的定时提前信息。
  10. 一种基于多发送接收点的通信方法，其特征在于，应用于网络设备，所述方法包括：
    确定为终端提供服务的至少两个发送接收点TRP；
    发送对应于所述至少两个TRP中各TRP的定时提前信息。
  11. 根据权利要求10所述的方法，其特征在于，所述至少两个TRP包括不同小区间的TRP。
  12. 根据权利要求10所述的方法，其特征在于，所述至少两个TRP包括同小区内的TRP。
  13. 根据权利要求12所述的方法，其特征在于，所述至少两个TRP中包括第一TRP和第二TRP；
    所述确定为所述终端提供服务的至少两个TRP，包括：
    确定波束方向上存在控制资源集0的第一同步信号块，并将所述第一同步信号块所对应的TRP，作为第一TRP；
    确定波束方向上不存在控制资源集0的第二同步信号块，并将所述第二同步信号块所对应的TRP，作为第二TRP。
  14. 根据权利要求13所述的方法，其特征在于，所述确定波束方向上不存在控制资源集0的第二同步信号块，包括：
    发送同步信号块集合，将所述同步信号块集合中波束方向上不存在控制资源集0的同步信号块作为第二同步信号块。
  15. 根据权利要求13或14所述的方法，其特征在于，所述方法还包括：
    在第一随机接入时机，基于所述第一TRP接收第一随机接入前导码，所述第一随机接入时机和所述第一随机接入前导码对应所述第一同步信号块；
    在第二随机接入时机，基于所述第二TRP接收第二随机接入前导码，所述第二随机接入时机和所述第二随机接入前导码对应所述第二同步信号块。
  16. 根据权利要求15所述的方法，其特征在于，所述第二随机接入时机基于所述网络 设备发送的指示信息确定，或者基于预定义规则确定。
  17. 根据权利要求10至16中任意一项所述的方法，其特征在于，所述发送对应于所述至少两个TRP中各TRP的定时提前信息，包括：
    基于所述至少两个TRP中各TRP发送随机接入响应，所述随机接入响应中包括初始定时提前信息；
    对应于所述至少两个TRP中各TRP的定时提前信息基于所述初始定时提前信息确定。
  18. 根据权利要求17所述的方法，其特征在于，所述方法还包括：
    发送媒体接入控制-控制单元MAC-CE信息，所述MAC-CE信息用于指示更新的定时提前信息；
    所述至少两个TRP中各TRP的定时提前信息基于所述更新的定时提前信息和所述初始定时提前信息确定。
  19. 一种基于多发送接收点的通信装置，其特征在于，包括：
    处理单元，被配置为确定为终端提供服务的至少两个发送接收点TRP；
    获取单元，被配置为获取对应于所述至少两个TRP中各TRP的定时提前信息。
  20. 一种基于多发送接收点的通信装置，其特征在于，包括：
    处理单元，被配置为确定为终端提供服务的至少两个发送接收点TRP；
    发送单元，被配置为发送对应于所述至少两个TRP中各TRP的定时提前信息。
  21. 一种基于多发送接收点的通信装置，其特征在于，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：执行权利要求1至9中任意一项所述的方法。
  22. 一种基于多发送接收点的通信装置，其特征在于，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：执行权利要求10至18中任意一项所述的方法。
  23. 一种存储介质，其特征在于，所述存储介质中存储有指令，当所述存储介质中的指令由终端的处理器执行时，使得终端能够执行权利要求1至9中任意一项所述的方法。
  24. 一种存储介质，其特征在于，所述存储介质中存储有指令，当所述存储介质中的指令由网络设备的处理器执行时，使得网络设备能够执行权利要求10至18中任意一项所述的方法。
PCT/CN2022/090681 2022-04-29 2022-04-29 一种基于多发送接收点的通信方法、装置及存储介质 WO2023206538A1 (zh)

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CN110392990A (zh) * 2017-01-08 2019-10-29 Lg电子株式会社 用于控制交叉链路干扰的方法及其设备
CN110574328A (zh) * 2017-03-08 2019-12-13 三星电子株式会社 用于在无线通信系统中处理参考信号的方法和装置
CN113630216A (zh) * 2016-08-22 2021-11-09 三星电子株式会社 在无线蜂窝通信系统中用于提供初始接入过程的各种参数的方法和设备
US20220078738A1 (en) * 2020-09-04 2022-03-10 Qualcomm Incorporated Full duplex timing advance enhancements
US20220085943A1 (en) * 2020-09-14 2022-03-17 Samsung Electronics Co., Ltd. Method and apparatus for timing adjustment in a wireless communication system

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CN110392990A (zh) * 2017-01-08 2019-10-29 Lg电子株式会社 用于控制交叉链路干扰的方法及其设备
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