Transmission processing method and apparatus

Abstract

The present disclosure relates to the technical field of communications. Provided are a transmission processing method and apparatus. The method of the present disclosure comprises: a terminal receiving first signaling sent by a network-side device, wherein the first signaling comprises timing advance (TA) information of a plurality of transmit-receive points (TRPs); and on the basis of the TA information, the terminal synchronizing transmissions related to the plurality of TRPs.

Description

A transmission processing method and apparatus

[0001] This disclosure claims priority to Chinese Patent Application No. 202410510877.9, filed with the Chinese Patent Office on April 26, 2024, entitled "A Transmission Processing Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a transmission processing method and apparatus. Background Technology

[0003] Currently, uplink synchronization technology relies on the base station sending Timing Advance (TA) information to the User Equipment (UE) to ensure that uplink transmissions from different UEs can reach the base station simultaneously.

[0004] However, with technological advancements, for UEs supporting Simultaneous Transmission of Multi-Panel (STxMP) or in 5G frequency range 1 (FR1) scenarios, the UE can transmit with different Transmit-Receive Points (TRPs). Therefore, how the UE can simultaneously achieve uplink transmission synchronization with various TRPs has become a pressing technical problem to be solved. Summary of the Invention

[0005] The purpose of this disclosure is to provide a transmission processing method and apparatus to solve the problem of how to achieve uplink transmission synchronization between the UE and each TRP simultaneously.

[0006] To achieve the above objectives, embodiments of this disclosure provide a transmission processing method, including:

[0007] The terminal receives a first signaling sent by the network-side device, wherein the first signaling includes timing advance TA information of multiple Transmitter-Receiver Nodes (TRPs);

[0008] The terminal synchronizes the transmissions related to the multiple TRPs based on the TA information.

[0009] In some embodiments, the TA information includes:

[0010] TA information corresponding to the TRP identifier; or,

[0011] TA information corresponding to the timing advance group TAG identifier.

[0012] In some embodiments, the first signaling further includes at least one of the following:

[0013] TRP identifier, TAG identifier, Physical Cell Identifier (PCI), Synchronization Signal Block (SSB) identifier, Antenna Channel Identifier.

[0014] In some embodiments, the first signaling includes at least one of the following:

[0015] Random Access Response (RAR);

[0016] Media Access Control Unit (MAC CE);

[0017] First control signaling.

[0018] In some embodiments, the method further includes:

[0019] The terminal receives a system message sent by the network-side device, wherein the system message includes first indication information, the first indication information indicating a first random access resource, and the first random access resource being used to determine the TA information of multiple TRPs;

[0020] The terminal initiates random access on the first random access resource according to the first instruction information.

[0021] In some embodiments, the method further includes:

[0022] The terminal receives a second control signaling sent by the network-side device, wherein the second control signaling includes second indication information, which is used to instruct the terminal to initiate random access to multiple TRPs.

[0023] In some embodiments, the second control signaling includes third indication information, which indicates a second random access resource used to determine TA information for a plurality of TRPs.

[0024] In some embodiments, the TA information included in the MAC CE signaling is either an absolute TA or a relative TA.

[0025] In some embodiments, the method further includes:

[0026] The terminal sends uplink signals, pilot signals, or uplink data to multiple TRPs, wherein the uplink signals, pilot signals, or uplink data are used to determine the TA information.

[0027] To achieve the above objectives, this disclosure also provides a transmission processing method, including:

[0028] The network-side device sends a first signaling message to the terminal, wherein the first signaling message includes TA information of multiple TRPs.

[0029] In some embodiments, the TA information includes:

[0030] TA information corresponding to the TRP identifier; or,

[0031] TA information corresponding to the timing advance group TAG identifier.

[0032] In some embodiments, the first signaling includes at least one of the following:

[0033] RAR;

[0034] MAC CE;

[0035] First control signaling.

[0036] In some embodiments, the method further includes:

[0037] The network-side device sends a system message to the terminal, wherein the system message includes first indication information, the first indication information indicating a first random access resource, and the first random access resource being used to determine the TA information of multiple TRPs;

[0038] The network-side device determines the TA information based on the first random access resource.

[0039] In some embodiments, the method further includes:

[0040] The network-side device sends a second control signaling message to the terminal, wherein the second control signaling message includes second indication information, which is used to instruct the terminal to initiate random access to multiple TRPs.

[0041] In some embodiments, the second control signaling includes third indication information, which indicates a second random access resource used to determine TA information for a plurality of TRPs.

[0042] In some embodiments, the TA information included in the MAC CE signaling is either an absolute TA or a relative TA.

[0043] In some embodiments, the method further includes:

[0044] The network-side device receives uplink signals, pilot signals, or uplink data sent by the terminal;

[0045] The network-side device determines the TA information based on the uplink signal, the pilot signal, or the uplink data.

[0046] To achieve the above objectives, this disclosure also provides a transmission processing apparatus, including: a memory, a transceiver, and a processor: the memory for storing program instructions; the transceiver for sending and receiving data under the control of the processor; and the processor for reading the program instructions from the memory and performing the following operations:

[0047] The first signaling sent by the network-side device is received, wherein the first signaling includes timing advance TA information of multiple Transmitter-Receiver Nodes (TRPs);

[0048] Based on the TA information, the transmissions associated with the multiple TRPs are synchronized.

[0049] In some embodiments, the TA information includes:

[0050] TA information corresponding to the TRP identifier; or,

[0051] TA information corresponding to the timing advance group TAG identifier.

[0052] In some embodiments, the first signaling further includes at least one of the following:

[0053] TRP identifier, TAG identifier, Physical Cell Identifier (PCI), Synchronization Signal Block (SSB) identifier, Antenna Channel Identifier.

[0054] In some embodiments, the first signaling includes at least one of the following:

[0055] RAR;

[0056] MAC CE;

[0057] First control signaling.

[0058] In some embodiments, the processor is further configured to perform the following operations:

[0059] Receive system messages sent by the network-side device, wherein the system messages include first indication information, the first indication information indicating a first random access resource, and the first random access resource being used to determine the TA information of multiple TRPs;

[0060] Based on the first instruction information, a random access is initiated on the first random access resource.

[0061] In some embodiments, the processor is further configured to perform the following operations:

[0062] The terminal receives a second control signaling sent by the network-side device, wherein the second control signaling includes second indication information, which is used to instruct the terminal to initiate random access to multiple TRPs.

[0063] In some embodiments, the second control signaling includes third indication information, which indicates a second random access resource used to determine TA information for a plurality of TRPs.

[0064] In some embodiments, the TA information included in the MAC CE signaling is either an absolute TA or a relative TA.

[0065] In some embodiments, the processor is further configured to perform the following operations:

[0066] Uplink signals, pilot signals, or uplink data are sent to multiple TRPs, wherein the uplink signals, pilot signals, or uplink data are used to determine the TA information.

[0067] To achieve the above objectives, this disclosure also provides a transmission processing apparatus, comprising:

[0068] The first receiving module is used to receive the first signaling sent by the network-side device, wherein the first signaling includes the timing advance TA information of multiple Transmitter-Receiver Nodes (TRPs);

[0069] The first processing module is used to synchronize the transmissions related to the multiple TRPs based on the TA information.

[0070] To achieve the above objectives, this disclosure also provides a transmission processing apparatus, including: a memory, a transceiver, and a processor: the memory for storing program instructions; the transceiver for sending and receiving data under the control of the processor; and the processor for reading the program instructions from the memory and performing the following operations:

[0071] Send a first signaling message to the terminal, wherein the first signaling message includes TA information of multiple TRPs.

[0072] In some embodiments, the TA information includes:

[0073] TA information corresponding to the TRP identifier; or,

[0074] TA information corresponding to the timing advance group TAG identifier.

[0075] In some embodiments, the first signaling includes at least one of the following:

[0076] RAR;

[0077] MAC CE;

[0078] First control signaling.

[0079] In some embodiments, the processor is further configured to perform the following operations:

[0080] Send a system message to the terminal, wherein the system message includes first indication information, the first indication information indicating a first random access resource, the first random access resource being used to determine the TA information of multiple TRPs;

[0081] The TA information is determined based on the first random access resource.

[0082] In some embodiments, the processor is further configured to perform the following operations:

[0083] Send a second control signaling message to the terminal, wherein the second control signaling message includes second indication information, the second indication information being used to instruct the terminal to initiate random access to multiple TRPs.

[0084] In some embodiments, the second control signaling includes third indication information, which indicates a second random access resource used to determine TA information for a plurality of TRPs.

[0085] In some embodiments, the TA information included in the MAC CE signaling is either an absolute TA or a relative TA.

[0086] In some embodiments, the processor is further configured to perform the following operations:

[0087] Receive uplink signals, pilot signals, or uplink data sent by the terminal;

[0088] The TA information is determined based on the uplink signal, the pilot signal, or the uplink data.

[0089] To achieve the above objectives, this disclosure also provides a transmission processing apparatus, including:

[0090] The first sending module is used to send a first signaling to the terminal, wherein the first signaling includes TA information of multiple TRPs.

[0091] To achieve the above objectives, this disclosure also provides a processor-readable storage medium storing program instructions for causing the processor to perform the transmission processing method as described above.

[0092] To achieve the above objectives, embodiments of this disclosure provide a computer program product including computer instructions that, when executed by a processor, implement the steps of the transmission processing method described above.

[0093] The above-disclosed technical solution has at least the following beneficial effects:

[0094] In the above technical solution of the present disclosure embodiments, the terminal can receive the first signaling sent by the network-side device, and synchronize the transmission related to the multiple TRPs by the TA information of the multiple TRPs included in the first signaling, thereby improving the efficiency of uplink synchronization between the UE and each TRP, reducing the additional overhead in the uplink synchronization process, and ensuring the reliability of uplink transmission of multiple TRPs. Attached Figure Description

[0095] Figure 1 is a schematic flowchart of one of the methods of this disclosure;

[0096] Figure 2 is a schematic diagram of the RAR format for contention-based access in an embodiment of this disclosure;

[0097] Figure 3 is a schematic diagram of RAR format for non-contention access in an embodiment of this disclosure;

[0098] Figure 4 is a schematic diagram of the absolute TA MAC CE format in an embodiment of this disclosure;

[0099] Figure 5 is a schematic diagram of the relative TA MAC CE format in an embodiment of this disclosure;

[0100] Figure 6 is a schematic diagram of the TRP associated information bits of the second control signaling in an embodiment of this disclosure;

[0101] Figure 7 is a schematic diagram illustrating one application of the method according to an embodiment of this disclosure;

[0102] Figure 8 is a second schematic diagram illustrating the application of the method according to an embodiment of this disclosure;

[0103] Figure 9 is a third schematic diagram illustrating the application of the method according to an embodiment of this disclosure;

[0104] Figure 10 is a second schematic flowchart of the method according to an embodiment of this disclosure;

[0105] Figure 11 is a structural block diagram of one of the devices according to an embodiment of the present disclosure;

[0106] Figure 12 is a schematic diagram of one of the modules of the device according to an embodiment of the present disclosure;

[0107] Figure 13 is a second structural block diagram of the device according to an embodiment of the present disclosure;

[0108] Figure 14 is a second schematic diagram of the module of the device according to an embodiment of the present disclosure. Detailed Implementation

[0109] In this disclosure, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0110] In this disclosure, the term "multiple" refers to two or more, and other quantifiers are similar.

[0111] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0112] To enable those skilled in the art to better understand the embodiments of this disclosure, the following description will be provided first:

[0113] In traditional Radio Access Networks (RANs), uplink synchronization is achieved through the TA (Transmission Control) mechanism. The base station sends TA commands (commands) to the Media Access Control (MAC) Control Element (CE) to the UE to ensure that uplink transmissions from different UEs arrive at the base station simultaneously. The base station calculates the TA command by measuring the Physical Uplink Shared Channel (PUSCH) or the Sounding Reference Signal (SRS) transmitted by the UE, and then sends it to the UE via the TA command MAC CE. The UE adjusts its uplink transmission time based on the received TA.

[0114] Simultaneous uplink multi-panel transmission (STxMP) allows two different uplink transmit panels to send the same or different PUSCHs to different TRPs, which are then received by different TRPs. If the same PUSCH is sent, the base station can merge the PUSCHs received by different TRPs, thereby improving PUSCH demodulation gain and coverage.

[0115] Dual TA for multiple Downlink Control Information (DCI) TRPs refers to configuring two Timing Advance Groups (TAGs) in intra-cell or inter-cell TRP scenarios. Each TAG is associated with a TA, thereby enabling simultaneous reception of PUSCH (supporting STxMP) on different TRPs or separate reception of PUSCH (not supporting STxMP, and the UE does not expect to send time-domain overlapping PUSCHs).

[0116] In traditional initial access, the UE obtains uplink synchronization as follows: the UE initiates a Random Access Channel (RACH) procedure. After receiving the preamble, the base station calculates the absolute TA, fills it into the Rach Access Response (RAR), and then sends the RAR to the UE. After receiving the RAR, the UE obtains the absolute TA, thereby achieving uplink alignment. This means that the base station can receive uplink transmissions from different UEs simultaneously. Uplink alignment can also be understood as uplink synchronization.

[0117] In a dual-TA scenario, the UE obtains uplink alignment with another TRP through a TRP configured with a Type 1 Common Search Space (CSS) Control Resource Set (CORESET): 1. The TRP configured with a Type 1 CSS triggers a Physical Downlink Control Channel (PDCCH) order, which contains the Physical Random Access Channel (PRACH) configuration information associated with TRP2; 2. Upon receiving the PDCCH order, the UE initiates a PRACH to TRP2 according to the configuration; 3. After receiving the preamble, TRP2 calculates the absolute TA and sends it to TRP1; 4. Upon receiving the absolute TA, TRP1 fills the absolute TA Command into the RAR and sends it to the UE. Upon receiving the RAR, the UE obtains the absolute TA of TRP2, thus achieving uplink alignment with TRP2.

[0118] After the UE obtains the initial absolute TA, the base station will send a TA Command to the UE based on the measured PUSCH or SRS. After receiving the TA Command, the UE will make fine adjustments to the uplink alignment to ensure that the UE can maintain uplink alignment even when it is in motion.

[0119] For uplink transmission supporting STxMP or FR1 with multiple DCIs and multiple TRPs, it is necessary to ensure that the transmission nodes of more than one TRP are uplink aligned with the UE at the same time. One PRACH or one TA Command MAC CE only guarantees that the UE is uplink aligned with one TRP, which is not only inefficient but also increases the system overhead.

[0120] This disclosure provides a transmission processing method and apparatus. The method and apparatus are based on the same concept, and since the principles by which the method and apparatus solve the problem are similar, their implementations can be referred to interchangeably; repeated details will not be repeated.

[0121] As shown in Figure 1, a transmission processing method provided in an embodiment of this disclosure includes:

[0122] Step 11: The terminal receives the first signaling sent by the network-side device, wherein the first signaling includes timing advance TA information of multiple Transmitter-Receiver Nodes (TRPs).

[0123] Step 12: The terminal synchronizes the transmissions related to the multiple TRPs according to the TA information.

[0124] In this way, by receiving the first signaling sent by the network-side device, the terminal can synchronize the transmissions related to the multiple TRPs by using the TA information of the multiple TRPs included in the first signaling, thereby improving the efficiency of uplink synchronization between the UE and each TRP, reducing the additional overhead in the uplink synchronization process, and ensuring the reliability of uplink transmission of multiple TRPs.

[0125] The network-side devices include, but are not limited to, Access Points (APs), Transmission Points (TRPs), Distribution Units (DUs), Distributed Data Units (DDUs), or Base Band Units (BBUs).

[0126] It should be noted that TA information can be understood as TA Command, or TA information is transmitted within TA Command.

[0127] It should also be noted that the transmissions associated with the multiple TRPs refer to the uplink transmissions between the terminal and the multiple TRPs.

[0128] In some embodiments, the TA information includes:

[0129] TA information corresponding to the TRP identifier; or,

[0130] TA information corresponding to the timing advance group TAG identifier.

[0131] In other words, if the first signaling includes TA information corresponding to the TRP identifier, the terminal can determine the TA information of the TRP with the TRP identifier from the first signaling; if the first signaling includes TA information corresponding to the TAG identifier, the terminal can determine the TA information of the TRP belonging to the TAG with the TAG identifier from the first signaling, which is applicable to scenarios where the terminal knows the TRPs corresponding to each TAG.

[0132] As an optional implementation, for a non-connected terminal, the TA information in the first signaling sent by the network-side device corresponds to the TRP identifier; for a connected terminal, the TA information in the first signaling sent by the network-side device corresponds to the TAG identifier.

[0133] In some embodiments, the first signaling further includes at least one of the following:

[0134] TRP identifier, TAG identifier, Physical Cell Identifier (PCI), Synchronization Signal Block (SSB) identifier, Antenna Channel identifier.

[0135] The TRP identifier can also be used to indicate whether the TA information included in the first signaling corresponds to a TRP with that TRP identifier. The TAG identifier can also indicate whether the TA information included in the first signaling corresponds to a TRP belonging to a TAG with that TAG identifier.

[0136] PCI is associated with TRP, such as additional PCI.

[0137] In this embodiment, the information included in the first signaling, other than the TA information, can also be referred to as TRP association information.

[0138] Of course, the first signaling includes, but is not limited to, at least one of the above-mentioned TA information, TRP identifier, TAG identifier, PCI, SSB identifier, and antenna channel identifier. The first signaling may also include reserved bits, resources (uplink (UL) grant) indicated to the terminal for uplink transmission, etc.

[0139] In some embodiments, the first signaling includes at least one of the following:

[0140] RAR;

[0141] MAC CE;

[0142] First control signaling.

[0143] That is, the network-side device can notify the terminal of the TA information of multiple TRPs by sending at least one of RAR, MAC CE, and first control signaling.

[0144] In some embodiments, the RAR can be a contention-based RAR or a non-contention-based RAR. The TA information included in the RAR is an absolute TA.

[0145] As an optional implementation, the RAR format for contention-based access is shown in Figure 2. Here, R is a reserved bit; TRPi implicitly indicates the TRP identifier and whether the RAR carries the TA information of the TRP with that identifier. If the corresponding bit is set to 1, it indicates that the information is carried; otherwise, it indicates that it is not carried. PCI represents the PCI associated with the TRP (including additional PCI); Timing Advance Command (TA information) is the absolute TA Command corresponding to the PCI, used by the MAC layer to control the amount of time adjustment; UL Grant is the resource that the network indicates the UE uses for uplink transmission; and the Temporary Cell Radio Network Temporary Identifier (C-RNTI) is a temporary identifier used by the MAC layer during the random access procedure. Thus, the RAR shown in Figure 2 can include the TA information of TRP1 to TRP8.

[0146] As an optional implementation, the RAR format for non-contention-based access is shown in Figure 3. Here, R represents a reserved bit; TAGi is the TAG identifier; Timing Advance Command (TA) information is the absolute TA Command corresponding to the TAG, used by the MAC layer to control the amount of time adjustment; UL Grant is the network-indicated resource for uplink transmission by the UE; and Temporary C-RNTI is the temporary identifier used by the MAC layer during the random access procedure. Thus, the RAR shown in Figure 3 can include the TA information for TAG1, the TA information for TAG3, and the TA information for the TRP of the same TAG is the same. This non-contention-based RAR is suitable for scenarios where the terminal knows the TRP corresponding to each TAG.

[0147] The first control signaling is downlink control signaling, which can be signaling transmitted via PDCCH, such as DCI.

[0148] In some embodiments, the TA information included in the MAC CE signaling is either an absolute TA or a relative TA.

[0149] Therefore, MAC CE signaling, including TA information, can be divided into absolute TA MAC CE and relative TA MAC CE. Absolute TA MAC CE can also be called TA Command MAC CE, and relative TA MAC CE can also be called TA Command MAC CE.

[0150] As an optional implementation, the absolute TA MAC CE format is shown in Figure 4, where R is a reserved bit; TAGi is the TAG identifier; and the Timing Advance Command, or TA information, is the absolute TA Command corresponding to the TAG, used by the MAC layer to control the amount of adjustment time. Thus, the absolute TA MAC CE shown in Figure 4 can include the absolute TA of TAG1 and the absolute TA of TAG3.

[0151] As an optional implementation, the relative TA MAC CE format is shown in Figure 5. Here, TAGi is the TAG identifier; the Timing Advance Command, or TA information, is the relative TA Command corresponding to the TAG, used by the MAC layer to control the amount of time adjustment. Thus, the relative TA MAC CE shown in Figure 5 can include the absolute TAs of TAG1 to TAGm, where m is the number of supported TAGs.

[0152] In some embodiments, for a connected terminal, the network-side device fills in the absolute TA MAC CE or relative TA MAC CE based on the calculated absolute TA or relative TA, and other relevant information, and sends a downlink data packet carrying the absolute TA MAC CE or relative TA MAC CE to the terminal. The terminal parses the absolute TA or relative TA of the absolute TA MAC CE in the downlink data packet and performs synchronization of multiple TRPs.

[0153] In some embodiments, the method further includes:

[0154] The terminal receives a system message sent by the network-side device, wherein the system message includes first indication information, the first indication information indicating a first random access resource, and the first random access resource being used to determine the TA information of multiple TRPs;

[0155] The terminal initiates random access on the first random access resource according to the first instruction information.

[0156] That is, before sending the first signaling, the network-side device sends a system message to the terminal to indicate the first random access resource through the first indication information. This first random access resource is dedicated to determining the TA information of multiple TRPs. After receiving the system message, the terminal initiates random access on the first random access resource. Subsequently, the network-side device can listen to the first random access resource on each of the multiple TRPs, obtain the TA information of each TRP, and then send the first signaling. At this time, the terminal can be a connectionless terminal or a connected terminal.

[0157] The first random access resource can be one or more specific resources. In some embodiments, when there are multiple first random access resources, these multiple resources can be associated with TRPs. For example, for TRP1 and TRP2, the first random access resources include resource 1 and resource 2. Resource 1 is associated with TRP1, and resource 2 is associated with TRP2. The terminal initiates random access on resource 1 and resource 2. TRP1 listens to resource 1 and calculates TA1, and TRP2 listens to resource 2 and calculates TA2.

[0158] For connected terminals, the terminal can proactively initiate random access based on the system message, for example, when there is uplink data to be sent.

[0159] The first indication information may be System Information Block (SIB) configuration information. Like SIB configuration information, the first indication information may include multiple TRPs (Multi-TRPs) in its Feature Combination to specify the random access resource (PRACH resource) configuration used for the Multi-TRP.

[0160] In the Information Element (IE), FeatureCombinatio indicates a function or combination of functions to be associated with a set of random access resources, such as an instance of FeatureCombinationPreambles.

[0161] As an optional implementation, the network-side device sends a system message to indicate the first random access resource; after receiving the system message, the terminal initiates random access on the first random access resource; the network-side device listens on the first random access resource on multiple TRPs and calculates the absolute TA of each TRP; the network-side device fills the absolute TAs of multiple TRPs and other relevant information into the RAR; the network-side device sends the RAR; the terminal receives the RAR, parses the absolute TAs and other relevant information in it, and performs synchronization of multiple TRPs.

[0162] In this embodiment, the network-side device sends a RAR to the terminal, including: the network-side device selecting a first target TRP (one or more TRPs) and sending the RAR to the terminal through the first target TRP. For example, the selected first target TRP may be the TRP with the strongest PRACH accept power.

[0163] In some embodiments, for a connected terminal, the network-side device sends a non-contention-based RAR to the terminal.

[0164] In some embodiments, the method further includes:

[0165] The terminal receives a second control signaling sent by the network-side device, wherein the second control signaling includes second indication information, which is used to instruct the terminal to initiate random access to multiple TRPs.

[0166] That is, before sending the first signaling, the network-side device sends a second control signaling to the terminal to instruct the terminal to initiate random access to multiple TRPs via second indication information. Here, the terminal can determine which TRPs to initiate random access to through the second control signaling. Thus, after receiving the second control signaling, the terminal sends PRACH on the specific multiple TRPs. For example, for a connected terminal, the network-side device can trigger the terminal to initiate random access to specific multiple TRPs for uplink synchronization by sending the second control signaling.

[0167] In some embodiments, the second control signaling includes third indication information, which indicates a second random access resource used to determine TA information for a plurality of TRPs.

[0168] Thus, after receiving the second control signaling, the terminal initiates random access on the second random access resource; the network-side device listens on the second random access resource on multiple TRPs and calculates the absolute TA for each TRP. The third indication information can also be understood as dedicated PRACH resource configuration information.

[0169] As an optional implementation, the network-side device sends a second control signaling instruction to instruct the terminal to initiate random access and specifies a random access resource for determining the TA information of multiple TRPs. Upon receiving the second control signaling, the terminal initiates random access on that random access resource. The network-side device listens on the random access resource on multiple TRPs and calculates the absolute TA for each TRP. The network-side device fills the absolute TAs of the multiple TRPs and other relevant information into a RAR. The network-side device sends the RAR. The terminal receives the RAR, parses the absolute TAs and other relevant information, and performs synchronization of multiple TRPs. In this embodiment, the second control signaling indicates a random access resource, and each TRP listens on this random access resource to calculate its TA.

[0170] Of course, similar to the first random access resource, the second random access resource can also be one or more specific resources. In some embodiments, when there are multiple second random access resources, these multiple resources can be associated with a TRP.

[0171] In this embodiment, the network-side device sends a RAR to the terminal, including: the network-side device selecting a second target TRP (one or more TRPs) and sending the RAR to the terminal through the second target TRP. The selected second target TRP may be a TRP configured with type1 CSS CORESET.

[0172] The second control signaling is downlink control signaling, which can be signaling transmitted via PDCCH, such as DCI.

[0173] As an optional implementation, the second control signaling is a DCI of format 1_0. Eight bits of the 12 reserved bits in this DCI are replaced with TRP association information bits. Each bit of the TRP association information bit corresponds to one TRP, supporting up to eight TRPs for uplink synchronization, as shown in Figure 6. If the corresponding bit is set to 1, it indicates that the terminal is triggered to initiate random access to that TRP; otherwise, it indicates that the terminal is not triggered to initiate random access to that TRP. This DCI may also include format identifiers, frequency domain resource allocation, random access preamble index, uplink or supplementary uplink index, synchronization signal or physical broadcast channel index, PRACH mask index, etc.

[0174] In some embodiments, the method further includes:

[0175] The terminal sends uplink signals, pilot signals, or uplink data to multiple TRPs, wherein the uplink signals, pilot signals, or uplink data are used to determine the TA information.

[0176] In this way, the terminal can send uplink signals, pilot signals, or uplink data to multiple specific TRPs, enabling the network-side equipment to calculate TA information based on the received uplink signals, pilot signals, or uplink data, and then fill it into the first signaling. Here, the terminal can be a connected terminal.

[0177] As an optional implementation, the terminal sends uplink signals, pilot signals, or uplink data to multiple TRPs; the network-side device receives the uplink signals, pilot signals, or uplink data on multiple TRPs; the network-side device calculates the relative TA based on the received uplink signals, pilot signals, or uplink data, and fills the relative TA and other information into the relative TA MAC CE; the network-side device selects to send the TA Command MAC CE; the terminal receives the TA Command MAC CE, parses the relative TA and other information in the TA Command MAC CE, adjusts the TA, and performs uplink synchronization across multiple TRPs.

[0178] The application of the method in the embodiments of this disclosure is described below with reference to specific scenarios:

[0179] Scenario 1: As shown in Figure 7, the UE accesses the RAN from the Radio Resource Control (RRC) idle state, obtains uplink TAs from multiple TRPs (TRP1 and TRP2), and completes uplink synchronization.

[0180] UE side:

[0181] 1. The UE receives the SIB configuration information and, based on the SIB configuration information, sends a PRACH resource dedicated to determining multiple TRP TA information.

[0182] 2. The UE receives the RAR, parses the absolute TA corresponding to each TRP in the RAR, and completes uplink synchronization with each TRP.

[0183] Network side:

[0184] 1. The network-side device sends the PRACH resource configuration, which is dedicated to determining multiple TRP TAs, to the UE through SIB configuration information.

[0185] 2. The network-side equipment receives PRACH resources sent by the UE at each TRP and calculates the absolute TA of each TRP by detecting the Preamble.

[0186] 3. The network-side device fills each calculated absolute TA, as well as other relevant information (such as PCI or TRP identifier (ID)) into the RAR.

[0187] 4. The network-side device selects TRP to send RAR, for example, selects TRP1 which detects the strongest PRACH signal strength to send RAR.

[0188] Scenario 2: As shown in Figure 8, the process of a connected UE acquiring the uplink TA of TRPs (TRP2 and TRP3) that have not been synchronized uplink.

[0189] UE side,

[0190] 1. The UE receives a second control signaling (PDCCH Order) sent by the network-side device (TRP1), which includes second indication information (instructing the terminal to initiate random access to TRP2 and TRP3) and third indication information (instructing the PRACH resources used to determine the TA information of TRP2 and TRP3). The second indication information includes TRP association information, such as PCI, or TRP ID.

[0191] 2. According to the second indication information, the UE obtains that the TRPs for uplink synchronization requested by TRP1 are TRP2 and TRP3. According to the PRACH resources indicated by the third indication information, the UE sends PRACH to TRP2 and TRP3.

[0192] 3. The UE receives the absolute TA Command MAC CE sent by TRP1.

[0193] 4. The UE parses the absolute TA Command MAC CE, obtains other related information (TRP association information) and the corresponding absolute TA, and obtains the absolute uplink TA, thereby achieving uplink synchronization.

[0194] On the network side,

[0195] 1. Based on the UE's measurement reports, the network-side equipment selects the TRPs that need uplink synchronization, or for TRPs that have timed out (TAT), fills in the TRP association information according to the new PDCCH Order format and sends the PDCCH Order to the UE.

[0196] 2. The network-side equipment detects and receives the PRACH sent by the UE through the corresponding TRP, and calculates the absolute TA of each TRP by detecting the Preamble.

[0197] 3. The network-side device fills each calculated absolute TA, along with the TRP association information, into the absolute TA Command MAC CE.

[0198] 4. The network-side device selects TRP (if uplink synchronization TRP1 has been achieved) and sends an absolute TA Command MAC CE to the UE.

[0199] Scenario 3: As shown in Figure 9, TRP1 and TRP2, which have already synchronized uplink, maintain the uplink synchronization process.

[0200] UE side,

[0201] 1. The UE receives an absolute TA Command MAC CE containing TA information and TRP association information sent by the network-side device.

[0202] 2. The UE parses the absolute TA Command MAC CE to obtain the contained TRP association information and the corresponding absolute TA, thereby obtaining the absolute uplink TA and achieving uplink synchronization.

[0203] On the network side,

[0204] 1. Network-side equipment measures uplink signals (such as Sounding Reference Signal (SRS)) or uplink data (data on the PUSCH) and calculates TA based on the measurements.

[0205] 2. Based on the calculated TA, the network-side device determines the TRP that needs uplink synchronization maintenance, and fills the TRP association information and the corresponding absolute TA into the absolute TA Command MAC CE.

[0206] 3. The network-side device selects TRP1 to send an absolute TA Command MAC CE.

[0207] In scenarios two and three, the network-side device can also fill each calculated absolute TA and TRP association information into the first control signaling, such as DCI; the network-side device selects TRP to send the first control signaling to the UE.

[0208] In summary, the method of this disclosure, for a multi-TRP network, improves the efficiency of uplink synchronization between the UE and each TRP by transmitting the TA information of multiple TRPs in one signaling (first signaling), reduces the additional overhead during the uplink alignment process, and thus ensures the reliability of uplink transmission of multiple TRPs.

[0209] As shown in Figure 10, a transmission processing method according to an embodiment of this disclosure includes:

[0210] Step 101: The network-side device sends a first signaling message to the terminal, wherein the first signaling message includes TA information of multiple TRPs.

[0211] In this way, by sending the first signaling to the terminal, the network-side device enables the terminal to synchronize the transmissions related to the multiple TRPs using the TA information of the multiple TRPs included in the first signaling. This improves the efficiency of uplink synchronization between the UE and each TRP, reduces the additional overhead during uplink synchronization, and ensures the reliability of uplink transmission to multiple TRPs.

[0212] In some embodiments, the TA information includes:

[0213] TA information corresponding to the TRP identifier; or,

[0214] TA information corresponding to the timing advance group TAG identifier.

[0215] In some embodiments, the first signaling further includes at least one of the following:

[0216] TRP identifier, TAG identifier, Physical Cell Identifier (PCI), Synchronization Signal Block (SSB) identifier, Antenna Channel Identifier.

[0217] In some embodiments, the first signaling includes at least one of the following:

[0218] RAR;

[0219] MAC CE;

[0220] First control signaling.

[0221] In some embodiments, the method further includes:

[0222] The network-side device sends a system message to the terminal, wherein the system message includes first indication information, the first indication information indicating a first random access resource, and the first random access resource being used to determine the TA information of multiple TRPs;

[0223] The network-side device determines the TA information based on the first random access resource.

[0224] In some embodiments, the method further includes:

[0225] The network-side device sends a second control signaling message to the terminal, wherein the second control signaling message includes second indication information, which is used to instruct the terminal to initiate random access to multiple TRPs.

[0226] In some embodiments, the second control signaling includes third indication information, which indicates a second random access resource used to determine TA information for a plurality of TRPs.

[0227] In some embodiments, the TA information included in the MAC CE signaling is either an absolute TA or a relative TA.

[0228] In some embodiments, the method further includes:

[0229] The network-side device receives uplink signals, pilot signals, or uplink data sent by the terminal;

[0230] The network-side device determines the TA information based on the uplink signal, the pilot signal, or the uplink data.

[0231] It should be noted that this method is implemented in conjunction with the method executed by the terminal described above. The implementation of the above method embodiments is adapted to this method and can achieve the same technical effect.

[0232] As shown in Figure 11, this embodiment of the present disclosure also provides a transmission processing apparatus, including: a memory 1120, a transceiver 1110, and a processor 1100: the memory 1120 is used to store program instructions; the transceiver 1110 is used to send and receive data under the control of the processor 1100; the processor 1100 is used to read the program instructions in the memory 1120 and perform the following operations:

[0233] The first signaling sent by the network-side device is received, wherein the first signaling includes timing advance TA information of multiple Transmitter-Receiver Nodes (TRPs);

[0234] Based on the TA information, the transmissions associated with the multiple TRPs are synchronized.

[0235] In Figure 11, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1100 and memory represented by memory 1120. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. Transceiver 1110 may be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. Processor 1100 is responsible for managing the bus architecture and general processing, and memory 1120 may store data used by processor 1100 during operation. For different user devices, user interface 1130 may also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0236] The processor 1100 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

[0237] In some embodiments, the TA information includes:

[0238] TA information corresponding to the TRP identifier; or,

[0239] TA information corresponding to the timing advance group TAG identifier.

[0240] In some embodiments, the first signaling further includes at least one of the following:

[0241] TRP identifier, TAG identifier, Physical Cell Identifier (PCI), Synchronization Signal Block (SSB) identifier, Antenna Channel Identifier.

[0242] In some embodiments, the first signaling includes at least one of the following:

[0243] RAR;

[0244] MAC CE;

[0245] First control signaling.

[0246] In some embodiments, the processor is further configured to perform the following operations:

[0247] Receive system messages sent by the network-side device, wherein the system messages include first indication information, the first indication information indicating a first random access resource, and the first random access resource being used to determine the TA information of multiple TRPs;

[0248] Based on the first instruction information, a random access is initiated on the first random access resource.

[0249] In some embodiments, the processor is further configured to perform the following operations:

[0250] The terminal receives a second control signaling sent by the network-side device, wherein the second control signaling includes second indication information, which is used to instruct the terminal to initiate random access to multiple TRPs.

[0251] In some embodiments, the second control signaling includes third indication information, which indicates a second random access resource used to determine TA information for a plurality of TRPs.

[0252] In some embodiments, the TA information included in the MAC CE signaling is either an absolute TA or a relative TA.

[0253] In some embodiments, the processor is further configured to perform the following operations:

[0254] Uplink signals, pilot signals, or uplink data are sent to multiple TRPs, wherein the uplink signals, pilot signals, or uplink data are used to determine the TA information.

[0255] The apparatus in this embodiment of the present disclosure, by receiving a first signaling sent by a network-side device, can synchronize the transmissions related to the multiple TRPs using the TA information of the multiple TRPs included in the first signaling, thereby improving the efficiency of uplink synchronization between the UE and each TRP, reducing the additional overhead during the uplink synchronization process, and ensuring the reliability of uplink transmission of multiple TRPs.

[0256] It should be noted that the apparatus provided in this embodiment can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0257] As shown in Figure 12, this disclosure also provides a transmission processing apparatus, including:

[0258] The first receiving module 1210 is used to receive a first signaling sent by a network-side device, wherein the first signaling includes timing advance information of multiple Transmitter-Receiver Nodes (TRPs).

[0259] The first processing module 1220 is used to synchronize the transmissions related to the multiple TRPs according to the TA information.

[0260] In some embodiments, the TA information includes:

[0261] TA information corresponding to the TRP identifier; or,

[0262] TA information corresponding to the timing advance group TAG identifier.

[0263] In some embodiments, the first signaling further includes at least one of the following:

[0264] TRP identifier, TAG identifier, Physical Cell Identifier (PCI), Synchronization Signal Block (SSB) identifier, Antenna Channel Identifier.

[0265] In some embodiments, the first signaling includes at least one of the following:

[0266] RAR;

[0267] MAC CE;

[0268] First control signaling.

[0269] In some embodiments, the apparatus further includes:

[0270] The second receiving module is used to receive system messages sent by the network-side device, wherein the system messages include first indication information, the first indication information indicating a first random access resource, and the first random access resource being used to determine the TA information of multiple TRPs;

[0271] The second processing module is used to initiate random access on the first random access resource according to the first indication information.

[0272] In some embodiments, the apparatus further includes:

[0273] The third receiving module is used to receive the second control signaling sent by the network-side device, wherein the second control signaling includes second indication information, which is used to instruct the terminal to initiate random access of multiple TRPs.

[0274] In some embodiments, the second control signaling includes third indication information, which indicates a second random access resource used to determine TA information for a plurality of TRPs.

[0275] In some embodiments, the TA information included in the MAC CE signaling is either an absolute TA or a relative TA.

[0276] In some embodiments, the apparatus further includes:

[0277] The second transmitting module is used to transmit uplink signals, pilot signals, or uplink data to multiple TRPs, wherein the uplink signals, pilot signals, or uplink data are used to determine the TA information.

[0278] The apparatus of this disclosure, by receiving a first signaling sent by a network-side device, can synchronize the transmissions related to the multiple TRPs using the TA information of the multiple TRPs included in the first signaling, thereby improving the efficiency of uplink synchronization between the UE and each TRP, reducing the additional overhead during uplink synchronization, and ensuring the reliability of uplink transmission to multiple TRPs.

[0279] It should be noted that the apparatus provided in this embodiment can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0280] In some embodiments of this disclosure, a processor-readable storage medium is also provided, the processor-readable storage medium storing program instructions for causing the processor to perform the following steps:

[0281] The first signaling sent by the network-side device is received, wherein the first signaling includes timing advance TA information of multiple Transmitter-Receiver Nodes (TRPs);

[0282] Based on the TA information, the transmissions associated with the multiple TRPs are synchronized.

[0283] When the program instructions are executed by the processor, they can implement all the above-described methods applied to the terminal side as shown in Figure 1. To avoid repetition, they will not be described again here.

[0284] As shown in Figure 13, this disclosure also provides a transmission processing apparatus, including: a memory 1320, a transceiver 1310, and a processor 1300: the memory 1320 is used to store program instructions; the transceiver 1310 is used to send and receive data under the control of the processor 1300; the processor 1300 is used to read the program instructions in the memory 1320 and perform the following operations:

[0285] Send a first signaling message to the terminal, wherein the first signaling message includes TA information of multiple TRPs.

[0286] In Figure 13, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1300 and memory represented by memory 1320. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. Transceiver 1310 may be multiple elements, including transmitters and receivers, providing units for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, and other transmission media.

[0287] The processor 1300 is responsible for managing the bus architecture and general processing, while the memory 1320 can store the data used by the processor 1300 when performing operations.

[0288] In some embodiments, the processor 1300 may be a CPU, ASIC, FPGA or CPLD, and the processor 1300 may also adopt a multi-core architecture.

[0289] The processor 1300 executes any of the methods described in the embodiments of this disclosure by calling program instructions stored in memory, according to the obtained executable instructions. The processor 1300 and the memory 1320 may also be physically separated.

[0290] In some embodiments, the TA information includes:

[0291] TA information corresponding to the TRP identifier; or,

[0292] TA information corresponding to the timing advance group TAG identifier.

[0293] In some embodiments, the first signaling includes at least one of the following:

[0294] RAR;

[0295] MAC CE;

[0296] First control signaling.

[0297] In some embodiments, the processor is further configured to perform the following operations:

[0298] Send a system message to the terminal, wherein the system message includes first indication information, the first indication information indicating a first random access resource, the first random access resource being used to determine the TA information of multiple TRPs;

[0299] The TA information is determined based on the first random access resource.

[0300] In some embodiments, the processor is further configured to perform the following operations:

[0301] Send a second control signaling message to the terminal, wherein the second control signaling message includes second indication information, the second indication information being used to instruct the terminal to initiate random access to multiple TRPs.

[0302] In some embodiments, the second control signaling includes third indication information, which indicates a second random access resource used to determine TA information for a plurality of TRPs.

[0303] In some embodiments, the TA information included in the MAC CE signaling is either an absolute TA or a relative TA.

[0304] In some embodiments, the processor is further configured to perform the following operations:

[0305] Receive uplink signals, pilot signals, or uplink data sent by the terminal;

[0306] The TA information is determined based on the uplink signal, the pilot signal, or the uplink data.

[0307] The apparatus of this embodiment sends a first signaling to a terminal, enabling the terminal to synchronize transmissions related to the multiple TRPs using the TA information of the multiple TRPs included in the first signaling. This improves the efficiency of uplink synchronization between the UE and each TRP, reduces additional overhead during uplink synchronization, and ensures the reliability of uplink transmission to multiple TRPs.

[0308] It should be noted that the apparatus provided in this embodiment can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0309] As shown in Figure 14, this disclosure also provides a transmission processing apparatus, including:

[0310] The first sending module 1410 is used to send a first signaling to the terminal, wherein the first signaling includes TA information of multiple TRPs.

[0311] In some embodiments, the TA information includes:

[0312] TA information corresponding to the TRP identifier; or,

[0313] TA information corresponding to the timing advance group TAG identifier.

[0314] In some embodiments, the first signaling includes at least one of the following:

[0315] RAR;

[0316] MAC CE;

[0317] First control signaling.

[0318] In some embodiments, the apparatus further includes:

[0319] The third sending module is used to send a system message to the terminal, wherein the system message includes first indication information, the first indication information indicating a first random access resource, and the first random access resource being used to determine the TA information of multiple TRPs;

[0320] The third processing module is used to determine the TA information based on the first random access resource.

[0321] In some embodiments, the apparatus further includes:

[0322] The fourth sending module is used to send a second control signaling to the terminal, wherein the second control signaling includes second indication information, which is used to instruct the terminal to initiate random access of multiple TRPs.

[0323] In some embodiments, the second control signaling includes third indication information, which indicates a second random access resource used to determine TA information for a plurality of TRPs.

[0324] In some embodiments, the TA information included in the MAC CE signaling is either an absolute TA or a relative TA.

[0325] In some embodiments, the apparatus further includes:

[0326] The fourth receiving module is used to receive uplink signals, pilot signals, or uplink data sent by the terminal;

[0327] The fourth processing module is used to determine the TA information based on the uplink signal, the pilot signal, or the uplink data.

[0328] The apparatus of this embodiment sends a first signaling to a terminal, enabling the terminal to synchronize transmissions related to the multiple TRPs using the TA information of the multiple TRPs included in the first signaling. This improves the efficiency of uplink synchronization between the UE and each TRP, reduces additional overhead during uplink synchronization, and ensures the reliability of uplink transmission to multiple TRPs.

[0329] It should be noted that the apparatus provided in this embodiment can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0330] In some embodiments of this disclosure, a processor-readable storage medium is also provided, the processor-readable storage medium storing program instructions for causing the processor to perform the following steps:

[0331] Send a first signaling message to the terminal, wherein the first signaling message includes TA information of multiple TRPs.

[0332] When the program instructions are executed by the processor, they can implement all the above-described implementations of the method embodiment applied to the network side as shown in Figure 10. To avoid repetition, they will not be described again here.

[0333] This disclosure also provides a computer program product, including computer instructions. When executed by a processor, these computer instructions implement the various processes of the method embodiments shown in FIG1 or FIG10 above, and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0334] The technical solutions provided in this disclosure are applicable to a variety of systems, especially 5G systems. For example, applicable systems may include Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Long Term Evolution Advanced (LTE-A), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), and 5G New Radio (NR). All of these systems include terminal equipment and network equipment. The system may also include a core network component, such as an evolved packet system (EPS) or a 5G system (5GS).

[0335] The terminal devices involved in the embodiments of this disclosure can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in a 5G system, a terminal device can be called User Equipment (UE). Wireless terminal devices can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but is not limited to these terms in the embodiments disclosed herein.

[0336] The network device disclosed in this embodiment may be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, the base station may also be called an access point, or a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network equipment involved in this disclosure can be a base transceiver station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA) system, a NodeB in a wide-band Code Division Multiple Access (WCDMA) system, an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) system, a 5G base station (gNB) in a next-generation 5G network architecture, a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in this disclosure. In some network structures, the network equipment may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and distributed unit may be geographically separated.

[0337] Network devices and terminal devices can each use one or more antennas to perform multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multiple-user MIMO (MU-MIMO). Depending on the shape and number of antenna combinations, MIMO transmission can be two-dimensional MIMO (2D-MIMO), three-dimensional MIMO (3D-MIMO), full-dimensional MIMO (FD-MIMO), or massive-scale MIMO (MMIMO), and can also be diversity transmission, pre-coded transmission, or beamforming transmission, etc.

[0338] It should be noted that the division of units in the embodiments of this disclosure is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0339] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this disclosure. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0340] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0341] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more flowchart illustrations and / or one or more block diagrams.

[0342] These processor-executable instructions may also be stored in a processor-readable memory that can instruct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0343] These processor-executable instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0344] Furthermore, it should be noted that in the apparatus and method of this disclosure, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent solutions of this disclosure. Moreover, the steps performing the above series of processes can naturally be executed in the order described, but are not necessarily required to be executed in chronological order; some steps can be executed in parallel or independently of each other. Those skilled in the art will understand that all or any step or component of the method and apparatus of this disclosure can be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or a combination thereof, which can be achieved by those skilled in the art using their basic programming skills after reading the description of this disclosure.

[0345] It should be noted that the above division of modules is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, these modules can be implemented entirely in software via processing element calls; they can be fully implemented in hardware; or some modules can be implemented by processing element calls to software, while others are implemented in hardware. For example, a module can be a separate processing element, or it can be integrated into a chip in the aforementioned device. Alternatively, it can be stored as program code in the memory of the aforementioned device, and its function can be called and executed by a processing element of the device. The implementation of other modules is similar. Moreover, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element mentioned here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed through integrated logic circuits in the hardware of the processor element or through software instructions.

[0346] For example, each module, unit, subunit, or submodule can be one or more integrated circuits configured to implement the above methods, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs). As another example, when a module is implemented using processing element scheduler code, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling program code. Furthermore, these modules can be integrated together to implement a system-on-a-chip (SOC).

[0347] The terms “first,” “second,” etc., used in this disclosure and in the claims are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this disclosure described herein may be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. Additionally, the use of “and / or” in the specification and claims indicates at least one of the connected objects, such as A and / or B and / or C, indicating seven possibilities: A alone, B alone, C alone, and both A and B, both B and C, both A and C, and A, B, and C. Similarly, the use of “at least one of A and B” in this specification and claims should be understood as “A alone, B alone, or both A and B.”

[0348] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. A transmission processing method, comprising: The terminal receives a first signaling sent by the network-side device, wherein the first signaling includes timing advance TA information of multiple Transmitter-Receiver Nodes (TRPs); The terminal synchronizes the transmissions related to the multiple TRPs based on the TA information.

2. The method according to claim 1, wherein, The TA information includes: TA information corresponding to the TRP identifier; or, TA information corresponding to the timing advance group TAG identifier.

3. The method according to claim 1 or 2, wherein, The first signaling also includes at least one of the following: TRP identifier, TAG identifier, Physical Cell Identifier (PCI), Synchronization Signal Block (SSB) identifier, Antenna Channel Identifier.

4. The method according to claim 1, wherein, The first signaling includes at least one of the following: Random Access Response (RAR); Media Access Control Unit (MAC CE); First control signaling.

5. The method according to claim 1, wherein, The method further includes: The terminal receives a system message sent by the network-side device, wherein the system message includes first indication information, the first indication information indicating a first random access resource, and the first random access resource being used to determine the TA information of multiple TRPs; The terminal initiates random access on the first random access resource according to the first instruction information.

6. The method according to claim 1, wherein, The method further includes: The terminal receives a second control signaling sent by the network-side device, wherein the second control signaling includes second indication information, which is used to instruct the terminal to initiate random access to multiple TRPs.

7. The method according to claim 6, wherein, The second control signaling includes third indication information, which indicates a second random access resource used to determine the TA information of multiple TRPs.

8. The method according to claim 4, wherein, The TA information included in the MAC CE signaling is either absolute TA or relative TA.

9. The method according to claim 1 or 8, wherein, The method further includes: The terminal sends uplink signals, pilot signals, or uplink data to multiple TRPs, wherein the uplink signals, pilot signals, or uplink data are used to determine the TA information.

10. A transmission processing method, comprising: The network-side device sends a first signaling message to the terminal, wherein the first signaling message includes TA information of multiple TRPs.

11. The method according to claim 10, wherein, The TA information includes: TA information corresponding to the TRP identifier; or, TA information corresponding to the timing advance group TAG identifier.

12. The method according to claim 10, wherein, The first signaling includes at least one of the following: RAR; MAC CE; First control signaling.

13. The method according to claim 10, wherein, The method further includes: The network-side device sends a system message to the terminal, wherein the system message includes first indication information, the first indication information indicating a first random access resource, and the first random access resource being used to determine the TA information of multiple TRPs; The network-side device determines the TA information based on the first random access resource.

14. The method of claim 10, wherein, The method further includes: The network-side device sends a second control signaling message to the terminal, wherein the second control signaling message includes second indication information, which is used to instruct the terminal to initiate random access to multiple TRPs.

15. The method according to claim 12, wherein, The TA information included in the MAC CE signaling is either absolute TA or relative TA.

16. The method according to claim 10 or 15, wherein, The method further includes: The network-side device receives uplink signals, pilot signals, or uplink data sent by the terminal; The network-side device determines the TA information based on the uplink signal, the pilot signal, or the uplink data.

17. A transmission processing apparatus, comprising: Memory, transceiver, processor; a memory for storing program instructions; Transceiver, used to send and receive data under the control of the processor; Processor, configured to read program instructions from the memory and perform the following operations: The first signaling sent by the network-side device is received, wherein the first signaling includes timing advance TA information of multiple Transmitter-Receiver Nodes (TRPs); Based on the TA information, the transmissions associated with the multiple TRPs are synchronized.

18. The apparatus according to claim 17, wherein, The TA information includes: TA information corresponding to the TRP identifier; or, TA information corresponding to the timing advance group TAG identifier.

19. The apparatus according to claim 17 or 18, wherein, The first signaling also includes at least one of the following: TRP identifier, TAG identifier, Physical Cell Identifier (PCI), Synchronization Signal Block (SSB) identifier, Antenna Channel Identifier.

20. The apparatus according to claim 17, wherein, The first signaling includes at least one of the following: RAR; MAC CE; First control signaling.

21. The apparatus according to claim 17, wherein, The processor is also used to perform the following operations: Receive system messages sent by the network-side device, wherein the system messages include first indication information, the first indication information indicating a first random access resource, and the first random access resource being used to determine the TA information of multiple TRPs; Based on the first instruction information, initiate random access on the random access resource.

22. The apparatus according to claim 17, wherein, The processor is also used to perform the following operations: The terminal receives a second control signaling sent by the network-side device, wherein the second control signaling includes second indication information, which is used to instruct the terminal to initiate random access to multiple TRPs.

23. The apparatus according to claim 22, wherein, The second control signaling includes third indication information, which indicates random access resources for determining multiple TRP TA information.

24. The apparatus according to claim 20, wherein, The TA information included in the MAC CE signaling is either absolute TA or relative TA.

25. The apparatus according to claim 17 or 24, wherein, The processor is also used to perform the following operations: Uplink signals, pilot signals, or uplink data are sent to multiple TRPs, wherein the uplink signals, pilot signals, or uplink data are used to determine the TA information.

26. A transmission processing apparatus, comprising: The first receiving module is used to receive the first signaling sent by the network-side device, wherein the first signaling includes the timing advance TA information of multiple Transmitter-Receiver Nodes (TRPs); The first processing module is used to synchronize the transmissions related to the multiple TRPs based on the TA information.

27. A transmission processing apparatus, comprising: Memory, transceiver, processor; a memory for storing program instructions; Transceiver, used to send and receive data under the control of the processor; Processor, configured to read program instructions from the memory and perform the following operations: Send a first signaling message to the terminal, wherein the first signaling message includes TA information of multiple TRPs.

28. The apparatus according to claim 27, wherein, The TA information includes: TA information corresponding to the TRP identifier; or, TA information corresponding to the timing advance group TAG identifier.

29. The apparatus according to claim 27, wherein, The first signaling includes at least one of the following: RAR; MAC CE; First control signaling.

30. The apparatus according to claim 27, wherein, The processor is also used to perform the following operations: Send a system message to the terminal, wherein the system message includes first indication information, the first indication information indicating a first random access resource, the first random access resource being used to determine the TA information of multiple TRPs; The TA information is determined based on the first random access resource.

31. The apparatus according to claim 27, wherein, The processor is also used to perform the following operations: Send a second control signaling message to the terminal, wherein the second control signaling message includes second indication information, the second indication information being used to instruct the terminal to initiate random access to multiple TRPs.

32. The apparatus according to claim 29, wherein, The TA information included in the MAC CE signaling is either absolute TA or relative TA.

33. The apparatus according to claim 27 or 32, wherein, The processor is also used to perform the following operations: Receive uplink signals, pilot signals, or uplink data sent by the terminal; The TA information is determined based on the uplink signal, the pilot signal, or the uplink data.

34. A transmission processing apparatus, comprising: The first sending module is used to send a first signaling to the terminal, wherein the first signaling includes TA information of multiple TRPs.

35. A processor-readable storage medium storing a computer program for causing the processor to perform the transmission processing method of any one of claims 1 to 9, or the transmission processing method of any one of claims 10 to 16.

36. A computer program product comprising computer instructions that, when executed by a processor, implement the transmission processing method as described in any one of claims 1 to 9, or the steps of the transmission processing method as described in any one of claims 10 to 16.

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