Information transmission method, configuration optimization method, device, terminal and network equipment

Abstract

This invention provides an information transmission method, configuration optimization method, apparatus, terminal, and network device, relating to the field of communication technology. The method includes: a terminal receiving small data transmission SDT configuration information sent by a network device, the SDT configuration information including configuration authorization (CG) configuration information for SDT; the terminal performing a configuration authorization-based small data transmission CG-SDT process according to the CG configuration information; the terminal sending first information related to the CG-SDT to the network device, the first information being used to optimize the CG-SDT-related configuration information; wherein the first information includes one or more of the following: CG resource-related information of the CG-SDT process; information related to the reasons for CG-SDT process failure; and CG-SDT-related information before non-SDT random access (RA) network access. This invention can solve the problem of resource waste in current SDT transmission schemes.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to an information transmission method, configuration optimization method, apparatus, terminal and network equipment. Background Technology

[0002] Small data transmission is divided into two transmission modes: one is Small Data Transmission (SDT) based on Configured Grant (CG), i.e., CG-SDT, and the other is Small Data Transmission (SDT) based on Random Access (RA), i.e., RA-SDT. The terminal, or User Equipment (UE), preferentially selects CG-SDT. If the selection criteria for CG-SDT cannot be met, the UE selects RA-SDT. Specifically, when selecting RA-SDT, the two-step random access (2-step RACH) SDT is preferred; if the criteria are not met, the four-step random access (4-step RACH) SDT is selected.

[0003] Based on the existing SDT transmission scheme, the terminal selects SDT according to the SDT configuration on the network device side to determine the SDT transmission method. After configuring the SDT configuration information for the UE on the network device side, there may be a problem that the UE can never meet the SDT access conditions, resulting in wasted resources. Summary of the Invention

[0004] This invention provides an information transmission method, configuration optimization method, apparatus, terminal, and network device, which solves the problem of resource waste in current SDT transmission schemes.

[0005] An embodiment of the present invention provides an information transmission method, comprising:

[0006] The terminal receives small data transmission SDT configuration information sent by the network device, the SDT configuration information including configuration authorization CG configuration information for SDT;

[0007] The terminal performs a small data transmission CG-SDT process based on configuration authorization according to the CG configuration information;

[0008] The terminal sends first information related to CG-SDT to the network device, the first information being used to optimize CG-SDT-related configuration information;

[0009] The first information includes one or more of the following:

[0010] CG resource-related information in the CG-SDT process;

[0011] Information related to the reasons for the failure of the CG-SDT process;

[0012] CG-SDT related information prior to random access (RA) to a non-SDT network.

[0013] Optionally, the CG resource-related information of the CG-SDT process includes at least one or more of the following:

[0014] The terminal identification information of the terminal;

[0015] Cell information corresponding to the CG resources in the CG-SDT process;

[0016] Information about the CG resource group corresponding to the CG resources in the CG-SDT process;

[0017] Beam information corresponding to CG resources in the CG-SDT process;

[0018] The terminal's status information during the CG-SDT process;

[0019] The status information corresponds to the CG resource allocation information;

[0020] The measurement threshold information corresponding to the CG resources in the CG configuration information;

[0021] The threshold value information for the payload size in the CG configuration information;

[0022] The terminal's Radio Network Temporary Identifier (RNTI) information based on CG when it is inactive.

[0023] Optionally, in the case that the CG-SDT process is a failed CG-SDT process, the CG resource-related information further includes:

[0024] This is the first indication information used to indicate that the CG-SDT timer has expired and no CG-SDT transmission feedback has been received.

[0025] Optionally, information related to the cause of failure in the CG-SDT process includes at least one or more of the following:

[0026] Second indication information used to indicate the cause of failure in the CG-SDT process;

[0027] The first measurement-related information of the terminal transitioning from an inactive state to an idle state.

[0028] Optionally, the second indication information is at least one or more of the following:

[0029] Indication information used to indicate that the CG-SDT process has failed due to cell reselection;

[0030] Indication information used to indicate that the CG-SDT process has failed due to the expiration of the CG-SDT timer;

[0031] Indication information used to indicate that the CG-SDT process fails because the Radio Link Control (RLC) reaches the maximum number of retransmissions.

[0032] Optionally, the first measurement-related information includes at least one or more of the following:

[0033] When the terminal transitions from an inactive state to an idle state, the cell information of the serving cell corresponding to CG-SDT is obtained.

[0034] The measurement results of the serving cell corresponding to CG-SDT when the terminal transitions from an inactive state to an idle state;

[0035] The measurement results of neighboring cells when the terminal changes from an inactive state to an idle state;

[0036] After the terminal transitions from an inactive state to an idle state, the cell information of the target cell is obtained.

[0037] The measurement results of the target cell after the terminal changes from an inactive state to an idle state;

[0038] The maximum number of retransmissions that cause the CG-SDT process to fail is reached when the RLC reaches its maximum retransmission count.

[0039] Optionally, SDT-related information prior to the RA access network (excluding SDT) includes at least one or more of the following:

[0040] Third indication information used to indicate whether CG-SDT or not has been experienced before RA access network is not subject to SDT;

[0041] Fourth indication information used to indicate the type of SDT related to CG-SDT experienced by the terminal when a non-SDT RA process is triggered.

[0042] Optionally, the fourth indication information is at least one or more of the following:

[0043] Indication information used to indicate that the terminal has failed to undergo the CG-SDT process, triggering the non-SDT RA process;

[0044] Indication information used to indicate that the terminal has failed to undergo the process of converting from CG-SDT to the first type of RA-SDT, triggering the non-SDT RA process;

[0045] Indication information used to indicate that the terminal fails to undergo the process of converting from CG-SDT to the first type of RA-SDT, and the process of converting from the first type of RA-SDT to the second type of RA-SDT, triggering the non-SDT RA process.

[0046] Optionally, the SDT configuration information further includes RA configuration information for SDT, and the method further includes:

[0047] The terminal performs a small data transmission RA-SDT process based on random access according to the SDT configuration information;

[0048] The terminal sends the second information related to RA-SDT to the network device, and the second information is used to optimize the configuration information related to RA-SDT.

[0049] The second information includes one or more of the following:

[0050] Information related to the reasons for the failure of the RA-SDT process;

[0051] RA-SDT related information prior to random access RA access networks that are not SDT;

[0052] Information related to the shared random access channel timing (RACH Occasion, RO) of the RA-SDT process.

[0053] Optionally, information related to the cause of failure in the RA-SDT process includes:

[0054] The fifth indication information used to indicate the cause of failure in the RA-SDT process;

[0055] The second measurement-related information is used to transition the terminal from an inactive state to an idle state.

[0056] Optionally, the fifth indication information is at least one or more of the following:

[0057] Indication information used to indicate that the RA-SDT process has failed due to cell reselection;

[0058] Indication information used to indicate that the RA-SDT process has failed due to the expiration of the RA-SDT timer;

[0059] Indication information used to indicate that the RA-SDT process fails because the RLC reaches the maximum number of retransmissions.

[0060] Optionally, the second measurement-related information includes at least one or more of the following:

[0061] When the terminal transitions from an inactive state to an idle state, the cell information of the serving cell corresponding to RA-SDT is obtained.

[0062] The measurement results of the serving cell corresponding to RA-SDT when the terminal transitions from an inactive state to an idle state;

[0063] The measurement results of neighboring cells when the terminal changes from an inactive state to an idle state;

[0064] After the terminal transitions from an inactive state to an idle state, the cell information of the target cell is obtained.

[0065] The measurement results of the target cell after the terminal changes from an inactive state to an idle state;

[0066] The maximum number of retransmissions that cause the RA-SDT process to fail is reached when the RLC reaches its maximum retransmission count.

[0067] Optionally, the RA-SDT related information prior to the non-SDT random access RA access network includes at least one or more of the following:

[0068] The sixth indication information is used to indicate whether RA-SDT has been experienced or not before a non-SDT RA access network;

[0069] The seventh indication information is used to indicate the RA-SDT related SDT type experienced by the terminal when a non-SDT RA procedure is triggered.

[0070] Optionally, the seventh indication information is at least one or more of the following:

[0071] Indication information used to indicate that the terminal has failed to undergo the first type of RA-SDT process, triggering the non-SDT RA process;

[0072] Indication information used to indicate that the terminal has failed to undergo the second type of RA-SDT process, triggering the non-SDT RA process;

[0073] Indication information used to indicate that the terminal has failed to transition from a first type of RA-SDT to a second type of RA-SDT, triggering the non-SDT RA process;

[0074] Indication information used to indicate that the terminal has failed to undergo the process of converting from CG-SDT to the first type of RA-SDT, triggering the non-SDT RA process;

[0075] Indication information used to indicate that the terminal fails to undergo the process of converting from CG-SDT to the first type of RA-SDT, and the process of converting from the first type of RA-SDT to the second type of RA-SDT, triggering the non-SDT RA process.

[0076] Optionally, the shared random access channel timing (RO) related information of the RA-SDT process includes at least one or more of the following:

[0077] The eighth indication information used to indicate that the first type of RA-SDT process and the second type of RA-SDT process share the RO;

[0078] When the first type of RA-SDT procedure and the second type of RA-SDT procedure share the RO, the number of contention-based random access preambles for the first type of RA-SDT on each synchronization signal block (SSB);

[0079] For each SSB, the first type of RA-SDT process shares a subset of RO information in the RA resources of the second type of RA-SDT process;

[0080] Ninth indication information used to indicate whether the first type of RA-SDT process uses or does not use the shared RO resource.

[0081] Optionally, the method further includes:

[0082] The terminal receives RA configuration information sent by the network device;

[0083] The terminal performs the RA process according to the RA configuration information;

[0084] The terminal sends third information related to the shared RO of the RA to the network device. The third information is used to optimize the configuration information related to the shared RO of the RA.

[0085] Optionally, the third information includes one or more of the following:

[0086] The tenth instruction information used to indicate that the first type of RA process and the second type of RA process share the RO;

[0087] When the first type of RA procedure and the second type of RA procedure share the RO, the number of contention-based random access preambles on each SSB for the first type of RA;

[0088] For each SSB, the first type of RA process shares a subset of RO information in the RA resources of the second type of RA process;

[0089] Eleventh indication information used to indicate whether the first type of RA process uses or does not use the shared RO resource.

[0090] This invention provides an information transmission method, comprising:

[0091] The terminal receives small data transmission SDT configuration information sent by the network device, the SDT configuration information including random access RA configuration information for SDT;

[0092] The terminal performs a small data transmission RA-SDT process based on random access according to the SDT configuration information;

[0093] The terminal sends the second information related to RA-SDT to the network device, and the second information is used to optimize the configuration information related to RA-SDT.

[0094] The second information includes one or more of the following:

[0095] Information related to the reasons for the failure of the RA-SDT process;

[0096] RA-SDT related information prior to random access RA access networks that are not SDT;

[0097] The shared random access channel timing (RO) related information of the RA-SDT process.

[0098] This invention provides an information transmission method, comprising:

[0099] The terminal receives random access (RA) configuration information sent by the network device;

[0100] The terminal performs the RA process according to the RA configuration information;

[0101] The terminal sends third information related to the shared random access channel (RO) of the RA to the network device. The third information is used to optimize the configuration information related to the shared RO of the RA.

[0102] This invention provides a configuration optimization method, including:

[0103] The network device sends small data transmission SDT configuration information to the terminal, the SDT configuration information including configuration authorization CG configuration information for SDT;

[0104] The network device receives first information related to CG-SDT for small data transmission based on configuration authorization sent by the terminal. The first information is obtained by the terminal during the CG-SDT process according to the CG configuration information.

[0105] Based on the first information, the network device optimizes the CG-SDT-related configuration information.

[0106] The first information includes one or more of the following:

[0107] CG resource-related information in the CG-SDT process;

[0108] Information related to the reasons for the failure of the CG-SDT process;

[0109] CG-SDT related information prior to random access (RA) to a non-SDT network.

[0110] Optionally, the SDT configuration information further includes RA configuration information for SDT, and the method further includes:

[0111] The network device receives second information related to RA-SDT for small data transmission based on random access sent by the terminal. The second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information.

[0112] The network device optimizes the RA-SDT-related configuration information based on the second information;

[0113] The second information includes one or more of the following:

[0114] Information related to the reasons for the failure of the RA-SDT process;

[0115] RA-SDT related information prior to random access RA access networks that are not SDT;

[0116] The shared random access channel timing (RO) related information of the RA-SDT process.

[0117] Optionally, the configuration optimization method further includes:

[0118] The network device sends RA configuration information to the terminal;

[0119] The network device receives third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal during the RA process based on the RA configuration information;

[0120] The network device optimizes the configuration information related to RA sharing RO based on the third information.

[0121] This invention provides a configuration optimization method, including:

[0122] The network device sends small data transmission SDT configuration information to the terminal, the SDT configuration information including random access RA configuration information for SDT;

[0123] The network device receives second information related to RA-SDT for small data transmission based on random access sent by the terminal. The second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information.

[0124] The network device optimizes the RA-SDT-related configuration information based on the second information;

[0125] The second information includes one or more of the following:

[0126] Information related to the reasons for the failure of the RA-SDT process;

[0127] RA-SDT related information prior to random access RA access networks that are not SDT;

[0128] The shared random access channel timing (RO) related information of the RA-SDT process.

[0129] This invention provides a configuration optimization method, including:

[0130] Network devices send random access (RA) configuration information to terminals;

[0131] The network device receives third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal during the RA process based on the RA configuration information;

[0132] The network device optimizes the configuration information related to RA sharing RO based on the third information.

[0133] This invention provides an information transmission device, including a memory, a transceiver, and a processor;

[0134] The memory stores computer programs; the transceiver, under the control of the processor, sends and receives data; the processor reads the computer programs from the memory and performs the following operations:

[0135] Receive small data transmission SDT configuration information sent by network devices, wherein the SDT configuration information includes configuration authorization CG configuration information for SDT;

[0136] Based on the CG configuration information, a small data transfer CG-SDT process based on configuration authorization is performed;

[0137] Send the first information related to CG-SDT to the network device, wherein the first information is used to optimize the configuration information related to CG-SDT;

[0138] The first information includes one or more of the following:

[0139] CG resource-related information in the CG-SDT process;

[0140] Information related to the reasons for the failure of the CG-SDT process;

[0141] CG-SDT related information prior to random access (RA) to a non-SDT network.

[0142] Optionally, the SDT configuration information also includes RA configuration information for the SDT, and the processor is used to read the computer program in the memory and perform the following operations:

[0143] Based on the SDT configuration information, perform the RA-SDT process for small data transmission based on random access;

[0144] Send the second information related to RA-SDT to the network device, the second information being used to optimize the configuration information related to RA-SDT;

[0145] The second information includes one or more of the following:

[0146] Information related to the reasons for the failure of the RA-SDT process;

[0147] RA-SDT related information prior to random access RA access networks that are not SDT;

[0148] The shared random access channel timing (RO) related information of the RA-SDT process.

[0149] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0150] Receive RA configuration information sent by the network device;

[0151] The RA process is performed based on the RA configuration information.

[0152] Send third information related to the shared RO of the RA to the network device. The third information is used to optimize the configuration information related to the shared RO of the RA.

[0153] This invention provides a terminal, comprising:

[0154] The first receiving unit is used to receive small data transmission SDT configuration information sent by the network device, wherein the SDT configuration information includes configuration authorization CG configuration information for SDT;

[0155] The first processing unit is used to perform a small data transmission CG-SDT process based on configuration authorization according to the CG configuration information;

[0156] The first sending unit is configured to send first information related to CG-SDT to the network device, wherein the first information is used to optimize CG-SDT-related configuration information.

[0157] The first information includes one or more of the following:

[0158] CG resource-related information in the CG-SDT process;

[0159] Information related to the reasons for the failure of the CG-SDT process;

[0160] CG-SDT related information prior to random access (RA) to a non-SDT network.

[0161] This invention provides an information transmission device, including a memory, a transceiver, and a processor;

[0162] The memory stores computer programs; the transceiver, under the control of the processor, sends and receives data; the processor reads the computer programs from the memory and performs the following operations:

[0163] Receive small data transmission SDT configuration information sent by network devices, wherein the SDT configuration information includes random access RA configuration information for SDT;

[0164] Based on the SDT configuration information, perform the RA-SDT process for small data transmission based on random access;

[0165] Send the second information related to RA-SDT to the network device, the second information being used to optimize the configuration information related to RA-SDT;

[0166] The second information includes one or more of the following:

[0167] Information related to the reasons for the failure of the RA-SDT process;

[0168] RA-SDT related information prior to random access RA access networks that are not SDT;

[0169] The shared random access channel timing (RO) related information of the RA-SDT process.

[0170] This invention provides a terminal, comprising:

[0171] The receiving unit is used to receive small data transmission SDT configuration information sent by the network device, wherein the SDT configuration information includes random access RA configuration information for SDT;

[0172] The processing unit is used to perform the RA-SDT process for small data transmission based on random access according to the SDT configuration information;

[0173] A sending unit is configured to send second information related to RA-SDT to the network device, wherein the second information is used to optimize RA-SDT-related configuration information;

[0174] The second information includes one or more of the following:

[0175] Information related to the reasons for the failure of the RA-SDT process;

[0176] RA-SDT related information prior to random access RA access networks that are not SDT;

[0177] The shared random access channel timing (RO) related information of the RA-SDT process.

[0178] This invention provides an information transmission device, including a memory, a transceiver, and a processor;

[0179] The memory stores computer programs; the transceiver, under the control of the processor, sends and receives data; the processor reads the computer programs from the memory and performs the following operations:

[0180] Receive random access (RA) configuration information sent by network devices;

[0181] The RA process is performed based on the RA configuration information.

[0182] The network device sends third information related to the shared random access channel (RO) of the RA, which is used to optimize the configuration information related to the shared RO of the RA.

[0183] This invention provides a terminal, comprising:

[0184] The receiving unit is used to receive random access (RA) configuration information sent by the network device;

[0185] The processing unit is used to perform the RA process according to the RA configuration information;

[0186] The sending unit is used to send third information related to the shared random access channel (RO) of the RA to the network device, wherein the third information is used to optimize the configuration information related to the shared RO of the RA.

[0187] This invention provides a configuration optimization device, including a memory, a transceiver, and a processor;

[0188] The memory stores computer programs; the transceiver, under the control of the processor, sends and receives data; the processor reads the computer programs from the memory and performs the following operations:

[0189] Send small data transmission SDT configuration information to the terminal, the SDT configuration information including configuration authorization CG configuration information for SDT;

[0190] The terminal receives first information related to CG-SDT for small data transmission based on configuration authorization, wherein the first information is obtained by the terminal during the CG-SDT process according to the CG configuration information;

[0191] Based on the first information, optimize the configuration information related to CG-SDT.

[0192] The first information includes one or more of the following:

[0193] CG resource-related information in the CG-SDT process;

[0194] Information related to the reasons for the failure of the CG-SDT process;

[0195] CG-SDT related information prior to random access (RA) to a non-SDT network.

[0196] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0197] The terminal receives second information related to RA-SDT for small data transmission based on random access, wherein the second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information;

[0198] Based on the second information, optimize the configuration information related to RA-SDT;

[0199] The second information includes one or more of the following:

[0200] Information related to the reasons for the failure of the RA-SDT process;

[0201] RA-SDT related information prior to random access RA access networks that are not SDT;

[0202] The shared random access channel timing (RO) related information of the RA-SDT process.

[0203] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0204] Send RA configuration information to the terminal;

[0205] The terminal receives third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal during the RA process based on the RA configuration information;

[0206] Based on the third piece of information, optimize the configuration information related to RA sharing RO.

[0207] An embodiment of the present invention provides a network device, characterized in that it comprises:

[0208] The first sending unit is used to send small data transmission SDT configuration information to the terminal, the SDT configuration information including configuration authorization CG configuration information for SDT;

[0209] The first receiving unit is configured to receive first information related to CG-SDT for small data transmission based on configuration authorization sent by the terminal, wherein the first information is obtained by the terminal during the CG-SDT process according to the CG configuration information;

[0210] The first processing unit is configured to optimize the CG-SDT-related configuration information based on the first information.

[0211] The first information includes one or more of the following:

[0212] CG resource-related information in the CG-SDT process;

[0213] Information related to the reasons for the failure of the CG-SDT process;

[0214] CG-SDT related information prior to random access (RA) to a non-SDT network.

[0215] This invention provides a configuration optimization device, including a memory, a transceiver, and a processor;

[0216] The memory stores computer programs; the transceiver, under the control of the processor, sends and receives data; the processor reads the computer programs from the memory and performs the following operations:

[0217] Send small data transmission SDT configuration information to the terminal, the SDT configuration information including random access RA configuration information for SDT;

[0218] The terminal receives second information related to RA-SDT for small data transmission based on random access, wherein the second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information;

[0219] Based on the second information, optimize the configuration information related to RA-SDT;

[0220] The second information includes one or more of the following:

[0221] Information related to the reasons for the failure of the RA-SDT process;

[0222] RA-SDT related information prior to random access RA access networks that are not SDT;

[0223] The shared random access channel timing (RO) related information of the RA-SDT process.

[0224] This invention provides a network device, comprising:

[0225] The sending unit is used to send small data transmission SDT configuration information to the terminal, wherein the SDT configuration information includes random access RA configuration information for SDT;

[0226] The receiving unit is configured to receive second information related to RA-SDT for small data transmission based on random access sent by the terminal, wherein the second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information;

[0227] The processing unit is configured to optimize the RA-SDT-related configuration information based on the second information.

[0228] The second information includes one or more of the following:

[0229] Information related to the reasons for the failure of the RA-SDT process;

[0230] RA-SDT related information prior to random access RA access networks that are not SDT;

[0231] The shared random access channel timing (RO) related information of the RA-SDT process.

[0232] This invention provides a configuration optimization device, including a memory, a transceiver, and a processor;

[0233] The memory stores computer programs; the transceiver, under the control of the processor, sends and receives data; the processor reads the computer programs from the memory and performs the following operations:

[0234] Send random access RA configuration information to the terminal;

[0235] The terminal receives third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal during the RA process based on the RA configuration information;

[0236] Based on the third piece of information, optimize the configuration information related to RA sharing RO.

[0237] This invention provides a network device, comprising:

[0238] The sending unit is used to send random access (RA) configuration information to the terminal.

[0239] A receiving unit is configured to receive third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal during the RA process based on the RA configuration information;

[0240] The processing unit is used to optimize the configuration information related to RA sharing RO based on the third information.

[0241] This invention provides a processor-readable storage medium storing a computer program that causes the processor to perform steps in the information transmission method described above, or causes the processor to perform steps in the configuration optimization method described above.

[0242] The beneficial effects of the above-mentioned technical solution of the present invention are:

[0243] In this embodiment of the invention, the terminal receives SDT configuration information sent by the network device, performs a CG-SDT process based on the CG configuration information for SDT in the SDT configuration information, and sends first information related to the CG-SDT to the network device. This first information is used to optimize the CG-SDT-related configuration information. This ensures that the network device is aware of the first information related to the CG-SDT, enabling it to optimize the CG-SDT-related configuration information accordingly, thereby reducing resource waste and ensuring that the terminal can more effectively send and receive data via SDT. Attached Figure Description

[0244] Figure 1 A flowchart illustrating the four-step random access process;

[0245] Figure 2 A flowchart illustrating a two-step random access process;

[0246] Figure 3 A flowchart illustrating the fallback from two-step random access to four-step random access;

[0247] Figure 4 One of the flowcharts illustrating the information transmission method according to an embodiment of the present invention;

[0248] Figure 5 A second flowchart illustrating the information transmission method according to an embodiment of the present invention;

[0249] Figure 6 The third flowchart illustrating the information transmission method of this invention;

[0250] Figure 7 One of the schematic diagrams illustrating the interaction flow between the terminal and the network device in an embodiment of the present invention;

[0251] Figure 8 This is the second schematic diagram illustrating the interaction flow between the terminal and the network device in an embodiment of the present invention.

[0252] Figure 9 The third schematic diagram illustrating the interaction flow between the terminal and the network device in an embodiment of the present invention;

[0253] Figure 10 One of the flowcharts illustrating the configuration optimization method of this invention embodiment;

[0254] Figure 11 The second flowchart illustrating the configuration optimization method of this invention;

[0255] Figure 12 The third flowchart illustrating the configuration optimization method of this invention;

[0256] Figure 13 A block diagram illustrating a terminal according to an embodiment of the present invention;

[0257] Figure 14 A block diagram illustrating a network device according to an embodiment of the present invention;

[0258] Figure 15 A block diagram illustrating an information transmission device according to an embodiment of the present invention;

[0259] Figure 16 A block diagram illustrating the configuration optimization apparatus of an embodiment of the present invention. Detailed Implementation

[0260] To make the technical problems, technical solutions, and advantages of this invention clearer, a detailed description will be provided below in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as particular configurations and components are provided merely to aid in a comprehensive understanding of the embodiments of this invention. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this invention. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0261] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0262] In various embodiments of the present invention, it should be understood that the sequence number of each process described below does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0263] In addition, the terms "system" and "network" are often used interchangeably in this article.

[0264] The technical solutions provided in this application can be applied to various systems, especially 5G systems. For example, applicable systems 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 systems may also include a core network component, such as Evolved Packet System (EPS) and 5G system (5GS).

[0265] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multiple-user MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0266] In this embodiment of the invention, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0267] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0268] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0269] The following is a brief introduction to the SDT process:

[0270] Small data transfer uses two transmission methods: CG-SDT and RA-SDT. The specific selection process is as follows:

[0271] Step 1: The UE performs uplink carrier selection to determine whether the selected carrier is a supplementary uplink (SUL).

[0272] Step 2: The UE performs SDT selection on the corresponding carrier.

[0273] Step 3: If the CG-SDT standard can be met, the UE selects the CG-SDT method to trigger the SDT process.

[0274] Step 4: If the CG-SDT standard cannot be met, the UE selects the RA-SDT method to trigger the SDT process.

[0275] Specifically, the UE's selection of the RA-SDT method to trigger the SDT process includes:

[0276] Step 4a: Prefer the 2-step RACH SDT process;

[0277] Step 4b: If the 2-step RACH cannot be satisfied, then the SDT procedure of the 4-step RACH is selected.

[0278] The conditions under which a UE can trigger CG-SDT include:

[0279] (1) The size of the data packet to be sent is less than or equal to a predefined threshold value;

[0280] (2) The Reference Signal Received Power (RSRP) is greater than or equal to a predefined threshold value.

[0281] The conditions under which a UE can trigger RA-SDT include:

[0282] (1) The size of the data packet to be sent is less than or equal to a predefined threshold.

[0283] (2) RSRP is greater than or equal to the configured threshold.

[0284] (3) The choice between 2-step RACH or 4-step RACH can be based on existing rules.

[0285] The random access channel (RACH) resources differ between RA-SDT and non-SDT RAs. The random access resource criteria for RA-SDT include:

[0286] If the ROs of SDT and non-SDT are different, then preamble partitioning is not required.

[0287] If the ROs of SDT and non-SDT are the same, then preamble partitioning is required.

[0288] The following is a brief introduction to the random access process:

[0289] 1. Four-step random access process:

[0290] like Figure 1 As shown, the four-step random access method (SDT) is divided into contention-based and non-contention-based random access. The SDT of the 4-step RA is based on a contention-based random access procedure. The contention-based random access procedure flow is as follows:

[0291] Step 1: The terminal sends MSG1 to the network device (such as gNB) to transmit the random access preamble;

[0292] Step 2: The terminal receives MSG2 sent by the network device and receives the Random Access Response (RAR), which carries the uplink grant (UL grant) for transmitting MSG3.

[0293] Step 3: The terminal sends MSG3 to the network device to send uplink scheduling transmission;

[0294] Step 4: The terminal receives MSG4 sent by the network device, resolving the contention.

[0295] If the contention is resolved, the four-step random access process is complete.

[0296] 2. Two-step random access process:

[0297] like Figure 2 As shown, two-step random access is divided into contention-based and non-contention-based random access. The contention-based random access process is as follows:

[0298] Step 1: The terminal sends an MSGA to the network device (such as a gNB), transmitting the random access preamble and the Physical uplink shared channel (PUSCH) payload.

[0299] Step 2: The terminal receives the MSGB sent by the network device, thus resolving the contention.

[0300] If a successful random access response (SuccessRAR) is received, the 2-step RA procedure is completed; if a fallback random access response (fallbackRAR) is received, the procedure reverts to the 4-step RA procedure, such as... Figure 3 As shown.

[0301] Step 3: The terminal sends Msg3 to the network device to initiate uplink scheduling transmission;

[0302] Step 4: The terminal receives Msg4 from the network device, resolving the contention.

[0303] The selection between two-step random access and four-step random access is as follows: if the network device is configured with resources for both two-step and four-step random access, the selection is made based on the configured threshold, such as the RSRP threshold of msgA (msgA-RSRP-Threshold). If the measured signal quality is higher than msgA-RSRP-Threshold, the two-step random access procedure is selected; if the measured signal quality is lower than msgA-RSRP-Threshold, the four-step random access procedure is selected.

[0304] The RACH report may include the following: random access purpose, cell identifier, random access frequency-related information, and RSRP measurements of the Synchronization Signal Block (SSB).

[0305] For CG-SDT, the network needs to configure dedicated CG resources for the UE, and these CG resources are only applicable to cells where the network equipment has configured CGs for connected UEs. When the UE accesses the network, it selects appropriate beam-level resources on the pre-configured CG resources and sends UL data packets. The CG resources in CG-SDT can also be UE-level resources, depending on the network implementation.

[0306] From a network optimization perspective, optimization mechanisms related to Random Access Registry (RA) involve the UE reporting information from several recent RA access attempts. This includes the purpose of the random access, the number of successful RA access attempts, SSB resource information for each RA attempt, whether the transition from 2-step RA to 4-step RA occurred after reaching the maximum number of transmissions, and whether the UE reverted to 4-step RA after receiving a fallback instruction from 2-step RA. However, this RA information reporting process cannot be used to optimize Garage Computing (CG) resources because the optimization targets are different.

[0307] The network equipment can determine that CG resources are unavailable based on the fact that the UE has CG capability and has been configured with SDT-related CG resources, but the UE accesses the network or transmits SDT data through other non-CG access methods without using CG resources. However, this information is too general; the network cannot determine the reason why the UE is not using CG resources, and therefore cannot effectively optimize CG resources. If CG resources for SDT are not optimized, the UE may never meet the conditions for CG-SDT access, resulting in wasted CG resources configured by the network equipment and the UE not being able to enjoy the benefits of low power consumption and low latency in the CG-SDT process. Furthermore, optimization of the RA (Real-Action) process in the RA-SDT process cannot be effectively achieved solely based on the existing RA reporting mechanism.

[0308] This application provides an information transmission method, configuration optimization method, apparatus, terminal, and network device to address the current lack of optimization schemes for CG-SDT-related configurations, which leads to ineffective optimization of CG resources and resulting waste of CG resources; and the fact that existing RA reporting mechanisms cannot meet the optimization requirements of RA-SDT-related configurations and RA-related configurations, which may also lead to resource waste and failure to achieve effective operation.

[0309] The method and apparatus (or terminal or network device) are based on the same concept of the application. Since the methods and apparatus (or terminal or network device) solve problems in similar principles, the implementation of the apparatus (or terminal or network device) and the method can refer to each other, and the repeated parts will not be described again.

[0310] like Figure 4 As shown, an embodiment of the present invention provides an information transmission method, specifically including the following steps:

[0311] Step 41: The terminal receives SDT configuration information sent by the network device, the SDT configuration information including CG configuration information for SDT.

[0312] Optionally, step 41 may include the terminal receiving CG configuration information for SDT in the connected state, or receiving CG configuration information for SDT during SDT transmission, etc., and the embodiments of the present invention are not limited thereto.

[0313] Optionally, the CG configuration information used for SDT includes, but is not limited to, at least one of the following: CG resource configuration information, and configuration information for the selection criteria of CG-SDT. For example: packet threshold values ​​when selecting CG-SDT, measurement result threshold values, and timing advance (TA) validity threshold values ​​or timers. During CG-SDT, the TA used for CG must be valid; otherwise, UL timing will be misaligned, and the base station cannot decode uplink data. To ensure the validity of TA, one specified method is that the terminal's measurement result cannot exceed the configured TA validity threshold value. If the terminal's measurement result exceeds this threshold value, it is considered that the terminal has made a large-scale movement, causing the TA to be invalid. To ensure the validity of TA, another specified method is to configure a timing advance timer (TAT) on the terminal side, and the TA is always valid before the TAT expires.

[0314] Step 42: The terminal performs the CG-SDT small data transmission process based on the configuration authorization according to the CG configuration information.

[0315] Optionally, the terminal can select an SDT based on the SDT configuration information. For example, if the CG-SDT conditions are met according to the CG configuration information, the CG-SDT process can be performed.

[0316] Step 43: The terminal sends the first information related to CG-SDT to the network device. The first information is used to optimize the configuration information related to CG-SDT.

[0317] The first information includes one or more of the following:

[0318] CG resource-related information in the CG-SDT process;

[0319] Information related to the reasons for the failure of the CG-SDT process;

[0320] CG-SDT related information prior to random access (RA) to a non-SDT network.

[0321] Optionally, the terminal can record CG resource-related information in an inactive or idle state, and mark whether the CG resource successfully triggered SDT transmission or failed SDT transmission, and report this to the network device for optimizing CG resource configuration. For failed SDT transmissions, the reason for the failure can also be reported to the network device for optimizing CG-SDT-related configuration information, such as optimizing CG resource configuration for SDT, optimizing cell selection reselection parameters, or optimizing parameters related to Radio Link Failure (RLF), etc. This embodiment of the invention is not limited to these specific examples.

[0322] Optionally, the terminal may successfully access the network via a non-SDT RA. In this case, the terminal may also report relevant information about its CG-SDT transmission process before accessing the network via a non-SDT RA during the RA reporting process, in order to optimize the configuration of SDT-related CG resources, etc.

[0323] In the above scheme, the terminal receives SDT configuration information sent by the network device, performs a CG-SDT process based on the CG configuration information for SDT in the SDT configuration information, and sends first information related to the CG-SDT to the network device. This first information is used to optimize the CG-SDT-related configuration information. This ensures that the network device is aware of the first information related to CG-SDT, enabling it to optimize the CG-SDT-related configuration information accordingly, thereby reducing resource waste and ensuring that the terminal can more effectively send and receive data via SDT.

[0324] Optionally, the CG resource-related information of the CG-SDT process includes at least one or more of the following:

[0325] CG resource-related information for a failed CG-SDT process;

[0326] CG resource information related to a successfully transmitted CG-SDT process;

[0327] The CG-SDT process for transmission failure includes: the CG-SDT process for initial transmission failure, and / or the CG-SDT process for subsequent transmission failure.

[0328] In this embodiment, the terminal reports CG resource-related information of a failed CG-SDT process and / or a successfully transmitted CG-SDT process to the network device. This ensures that the network device can optimize the configuration of CG resources and reduce resource waste when it learns that CG-SDT transmission has been successful or failed.

[0329] Optionally, the CG resource-related information of the CG-SDT process includes at least one or more of the following:

[0330] The terminal identification information of the terminal; for example: the terminal identification information, i.e., the UE ID, can be an inactive radio network temporary identifier (I-RNTI), a small data transmission radio network temporary identifier (SDT-RNTI), etc.

[0331] Cell information corresponding to the CG resources in the CG-SDT process; for example, cell information may include, but is not limited to, at least one of the following: cell identifier information, cell frequency information, etc.

[0332] The CG resource group information corresponding to the CG resources in the CG-SDT process; for example: the CG resource group includes multiple sets of CG resources, each set of CG resources has an ID, a corresponding period, the time domain and / or frequency domain position of the CG in each period, the available modulation and coding scheme (MCS) information, the beam information corresponding to the CG, and other information; optionally, the CG resource group information can be at least one of the above-mentioned other information and / or ID information.

[0333] The beam information corresponding to the CG resources in the CG-SDT process; for example, beam information may include, but is not limited to, at least one of the following: beam ID information, beam configuration information, and beam-level measurement results. Here, beam refers to SSB, and the SSB information corresponding to the CG resources includes, but is not limited to, at least one of the following: SSB ID information, SSB configuration information, and SSB-level measurement results.

[0334] The terminal's status information during the CG-SDT process; for example, the status information may indicate that the terminal is in an idle state (such as SDT / SON), or the status information may indicate that the terminal is in an inactive state.

[0335] The status information corresponds to the CG resource allocation information; for example, the CG resource allocation information may include, but is not limited to, at least one of the following: proportion information, threshold information, etc. For example, the proportion of CG resources that can be used by terminals in the idle state, or the proportion of CG resources that can be used by terminals in the inactive state, in the configured shared CG resources. For instance, if the network device configures 10 shared CG resources, where 1-5 are used by terminals in the inactive state, and 5-10 are shared by terminals in both the idle and inactive states, the terminal needs to report this proportion to the base station; optionally, this information may be historical information that has been updated by the base station, so it needs to be reported.

[0336] The measurement threshold information corresponding to the CG resources in the CG configuration information; for example: the measurement threshold information corresponding to the CG resources when using CG-SDT configured on the network device side, or the measurement threshold information of the beam corresponding to the CG resources when using CG-SDT configured on the network device side.

[0337] The threshold value information for the payload size in the CG configuration information;

[0338] The terminal in the inactive state uses the Cell Radio Network Temporary Identifier (RNTI) information based on the Cell Resource Classification (CG). For example, the CG resource may be UE-specific and there may only be a UE-specific CG configuration in one cell. Therefore, the UE can report its CG-RNTI in the inactive state, which is the Cell Radio Network Temporary Identifier (C-RNTI) information or I-RNTI information from the last time it was in the connected state. The network device can update the CG configuration information based on this information without having to report the CG configuration information from the previous step.

[0339] Optionally, in the case that the CG-SDT process is a failed CG-SDT process, the CG resource-related information further includes:

[0340] A first indication message is used to indicate that the CG-SDT timer has expired and no CG-SDT transmission feedback has been received. For example, the first indication message may include at least one of the following: an indication message for indicating that the CG-SDT timer has expired and no feedback has been received for the initial transmission, or an indication message for indicating that the CG-SDT timer has expired and no feedback has been received for subsequent transmissions (non-initial transmissions, or retransmissions).

[0341] The CG resource-related information of the failed CG-SDT process includes at least one or more of the following:

[0342] The terminal identification information of the terminal; for example: the terminal identification information, i.e., the UE ID, can be I-RNTI, SDT-RNTI, etc.

[0343] Cell information corresponding to the CG resources in the failed CG-SDT process; for example, cell information may include, but is not limited to, at least one of the following: cell identifier information, cell frequency information, etc.

[0344] The CG resource group information corresponding to the CG resources in the failed CG-SDT process; for example: the CG resource group includes multiple sets of CG resources, each set of CG resources has an ID, a corresponding period, the time domain and / or frequency domain location of the CG in each period, available MCS information, beam information corresponding to the CG, and other information; optionally, the CG resource group information can be at least one of the above-mentioned other information and / or ID information.

[0345] The beam information corresponding to the CG resource in the failed CG-SDT process; for example, the beam information may include, but is not limited to, at least one of the following: beam identifier (Beam ID) information, beam configuration information, and beam-level measurement results, etc. Here, beam refers to SSB, and the SSB information corresponding to the CG resource includes, but is not limited to, at least one of the following: SSB ID information, SSB configuration information, and SSB-level measurement results, etc.

[0346] The terminal's status information during a failed CG-SDT transmission process; for example, the status information may indicate that the terminal is in an idle state (such as SDT / SON), or the status information may indicate that the terminal is in an inactive state.

[0347] The status information corresponds to the CG resource allocation information; for example, the CG resource allocation information may include, but is not limited to, at least one of the following: proportion information, threshold information, etc. For example, the proportion of CG resources that can be used by terminals in the idle state, or the proportion of CG resources that can be used by terminals in the inactive state, in the configured shared CG resources. For instance, if the network device configures 10 shared CG resources, where 1-5 are used by terminals in the inactive state, and 5-10 are shared by terminals in both the idle and inactive states, the terminal needs to report this proportion to the base station; optionally, this information may be historical information that has been updated by the base station, so it needs to be reported.

[0348] The measurement threshold information corresponding to the CG resources in the CG configuration information; for example: the measurement threshold information corresponding to the CG resources when using CG-SDT configured on the network device side, or the measurement threshold information of the beam corresponding to the CG resources when using CG-SDT configured on the network device side.

[0349] The threshold value information for the payload size in the CG configuration information;

[0350] First indication information used to indicate that the CG-SDT timer has expired and no CG-SDT transmission feedback has been received; for example, the first indication information may include: indication information for indicating that the CG-SDT timer has expired and no feedback has been received for the initial transmission, indication information for indicating that the CG-SDT timer has expired and no feedback has been received for subsequent transmissions (non-initial transmissions, or retransmissions), etc.

[0351] The terminal in the inactive state uses the Cell Radio Network Temporary Identifier (RNTI) information based on the Cell Resource Classification (CG). For example, the CG resource may be UE-specific and there may only be a UE-specific CG configuration in one cell. Therefore, the UE can report its CG-RNTI in the inactive state, which is the Cell Radio Network Temporary Identifier (C-RNTI) information or I-RNTI information from the last time it was in the connected state. The network device can update the CG configuration information based on this information without having to report the CG configuration information from the previous step.

[0352] Optionally, the CG resource-related information of the successfully transmitted CG-SDT process includes at least one or more of the following:

[0353] The terminal identification information of the terminal; for example: the terminal identification information, i.e., the UE ID, can be I-RNTI, SDT-RNTI, etc.

[0354] Cell information corresponding to the CG resources of a successfully transmitted CG-SDT process; for example, cell information may include, but is not limited to, at least one of the following: cell identifier information, cell frequency information, etc.

[0355] The CG resource group information corresponding to the CG resources in the successfully transmitted CG-SDT process; for example: the CG resource group includes multiple sets of CG resources, each set of CG resources has an ID, a corresponding period, the time domain and / or frequency domain location of the CG in each period, available MCS information, beam information corresponding to the CG, and other information; optionally, the CG resource group information can be at least one of the above-mentioned other information and / or ID information.

[0356] The beam information corresponding to the CG resource in the successfully transmitted CG-SDT process; for example, the beam information may include, but is not limited to, at least one of the following: beam identifier (Beam ID) information, beam configuration information, and beam-level measurement results, etc. Here, beam refers to SSB, and the SSB information corresponding to the CG resource includes, but is not limited to, at least one of the following: SSB ID information, SSB configuration information, and SSB-level measurement results, etc.

[0357] The status information of the terminal during the successful transmission of CG-SDT; for example, the status information may indicate that the terminal is in an idle state (such as SDT / SON), or the status information may indicate that the terminal is in an inactive state.

[0358] The status information corresponds to the CG resource allocation information; for example, the CG resource allocation information may include, but is not limited to, at least one of the following: proportion information, threshold information, etc. For example, the proportion of CG resources that can be used by terminals in the idle state, or the proportion of CG resources that can be used by terminals in the inactive state, in the configured shared CG resources. For instance, if the network device configures 10 shared CG resources, where 1-5 are used by terminals in the inactive state, and 5-10 are shared by terminals in both the idle and inactive states, the terminal needs to report this proportion to the base station; optionally, this information may be historical information that has been updated by the base station, so it needs to be reported.

[0359] The measurement threshold information corresponding to the CG resources in the CG configuration information; for example: the measurement threshold information corresponding to the CG resources when using CG-SDT configured on the network device side, or the measurement threshold information of the beam corresponding to the CG resources when using CG-SDT configured on the network device side.

[0360] The threshold value information for the payload size in the CG configuration information;

[0361] The terminal's CG-based RNTI information when inactive; for example, the first indication information may include: indication information for indicating that the CG-SDT timer has expired and no feedback has been received for the initial transmission, indication information for indicating that the CG-SDT timer has expired and no feedback has been received for subsequent transmissions (non-initial transmissions, or retransmissions), etc.

[0362] Optionally, information related to the cause of failure in the CG-SDT process includes at least one or more of the following:

[0363] Second indication information used to indicate the cause of failure in the CG-SDT process;

[0364] The first measurement-related information of the terminal transitioning from an inactive state to an idle state.

[0365] In this embodiment, cell reselection, CG-SDT timer expiration, or RLC reaching the maximum retransmission count may all cause the CG-SDT process to fail. The terminal may change from inactive state to inactive state. The terminal can report relevant information to the network device to optimize CG resources for SDT, or to optimize the configuration of cell selection and reselection parameters, RLF related parameters, etc.

[0366] Optionally, the second indication information may explicitly or implicitly indicate the reason for the failure of the CG-SDT process; the second indication information may be at least one or more of the following:

[0367] Indication information used to indicate that the CG-SDT process has failed due to cell reselection;

[0368] Indication information used to indicate that the CG-SDT process has failed due to the expiration of the CG-SDT timer;

[0369] Indication information used to indicate that the CG-SDT process fails because the RLC reaches the maximum number of retransmissions.

[0370] Optionally, the first measurement-related information includes at least one or more of the following:

[0371] When the terminal transitions from an inactive state to an idle state, the cell information of the serving cell corresponding to the CG-SDT; for example, the cell information may include, but is not limited to, at least one of the following: cell identifier information, cell frequency information, etc.

[0372] The measurement results of the serving cell corresponding to CG-SDT when the terminal transitions from an inactive state to an idle state;

[0373] The measurement results of neighboring cells when the terminal changes from an inactive state to an idle state;

[0374] After the terminal transitions from an inactive state to an idle state, the cell information of the target cell is obtained; for example, the cell information may include, but is not limited to, at least one of the following: cell identifier information, cell frequency information, etc.

[0375] The measurement results of the target cell after the terminal changes from an inactive state to an idle state;

[0376] The maximum number of retransmissions that cause the CG-SDT process to fail is reached when the RLC reaches its maximum retransmission count.

[0377] Optionally, SDT-related information prior to the RA access network (excluding SDT) includes at least one or more of the following:

[0378] Third indication information used to indicate whether CG-SDT or not has been experienced before RA access network is not subject to SDT;

[0379] Fourth indication information used to indicate the type of SDT related to CG-SDT experienced by the terminal when a non-SDT RA process is triggered.

[0380] Optionally, the third indication information may be used to explicitly or implicitly indicate whether CG-SDT was experienced or not before the RA access network was not under SDT.

[0381] Optionally, a non-SDT RA process may include a first type of RA process (i.e., a 2-step RA process), or a second type of RA process (i.e., a 4-step RA process), or a conversion / rollback from a first type of RA process to a second type of RA process, etc.

[0382] In this embodiment, the terminal may successfully access the network through a non-SDT RA. In this case, the terminal can also report relevant information about its CG-SDT transmission process before accessing the network through a non-SDT RA during the RA reporting process, in order to optimize the configuration of SDT-related CG resources, etc.

[0383] Optionally, the fourth indication information may explicitly or implicitly indicate the CG-SDT-related SDT type experienced by the terminal when triggering a non-SDT RA process; the fourth indication information may be at least one or more of the following:

[0384] Indication information used to indicate that the terminal has failed to undergo the CG-SDT process, triggering the non-SDT RA process;

[0385] Indication information used to indicate that the terminal has failed to undergo the process of converting from CG-SDT to the first type of RA-SDT, triggering the non-SDT RA process;

[0386] Indication information used to indicate that the terminal fails to undergo the process of converting from CG-SDT to the first type of RA-SDT, and the process of converting from the first type of RA-SDT to the second type of RA-SDT, triggering the non-SDT RA process.

[0387] The first type of RA-SDT procedure can be a two-step random access SDT procedure, i.e., a 2-step RA-SDT procedure; the second type of RA-SDT procedure can be a four-step random access SDT procedure, i.e., a 4-step RA-SDT procedure.

[0388] Optionally, the SDT configuration information further includes RA configuration information for SDT, wherein the process of receiving the SDT configuration information may include: the terminal obtaining the RA configuration information for SDT through system broadcast information. The method further includes:

[0389] The terminal performs the RA-SDT process according to the SDT configuration information; for example, the terminal can select SDT based on the CG configuration used for SDT in the SDT configuration information, and if it is determined that the CG-SDT conditions are not met, it can perform the RA-SDT process according to the RA configuration information used for SDT in the SDT configuration information; or the terminal can select SDT based on the CG configuration used for SDT in the SDT configuration information, and if it is determined that the CG-SDT conditions are met, the CG-SDT to RA-SDT process occurs at that time, etc.

[0390] The terminal sends the second information related to RA-SDT to the network device, and the second information is used to optimize the configuration information related to RA-SDT.

[0391] The second information includes one or more of the following:

[0392] Information related to the reasons for the failure of the RA-SDT process;

[0393] RA-SDT related information prior to random access RA access networks that are not SDT;

[0394] The shared random access channel timing (RO) related information of the RA-SDT process.

[0395] Optionally, when the RA-SDT process fails, the cause of the failure can be reported to the network device for the failed SDT transmission, so as to optimize the configuration information related to RA-SDT, such as optimizing the RA resource configuration of SDT, or optimizing the parameter configuration of cell selection reselection, or optimizing the parameter configuration related to Radio Link Failure (RLF), etc. The embodiments of the present invention are not limited thereto.

[0396] Optionally, the terminal may successfully access the network via a non-SDT RA. In this case, the terminal may also report relevant information about the RA-SDT transmission process before accessing the network via a non-SDT RA during the RA reporting process, in order to optimize the configuration of SDT-related RA resources, etc.

[0397] Optionally, during the RA-SDT process, the 2-step RA-SDT process and the 4-step RA-SDT process can share RO resources. This allows the terminal to report the specific parameters when sharing RO to the network device, so that the network device can optimize the parameters when sharing RO.

[0398] In the above scheme, the terminal receives SDT configuration information sent by the network device, performs an RA-SDT process based on the RA configuration information for SDT in the SDT configuration information, and sends second information related to the RA-SDT to the network device. The first information is used to optimize the RA-SDT related configuration information. This ensures that the network device is aware of the second information related to RA-SDT, so that the network device can optimize the RA-SDT related configuration information according to the second information, thereby reducing resource waste and ensuring that the terminal can send and receive data more efficiently through SDT.

[0399] Optionally, information related to the cause of failure in the RA-SDT process includes:

[0400] The fifth indication information used to indicate the cause of failure in the RA-SDT process;

[0401] The second measurement-related information is used to transition the terminal from an inactive state to an idle state.

[0402] In this embodiment, the RA-SDT process may fail due to cell reselection, RA-SDT timer expiration, or RLC reaching the maximum retransmission count. The terminal may change from inactive to inactive state. The terminal can report relevant information to the network device to optimize RA resources for SDT, or to optimize the configuration of cell selection and reselection parameters, RLF related parameters, etc.

[0403] Optionally, the fifth indication information may indicate the cause of the RA-SDT process failure in an explicit or implicit manner; the fifth indication information may be at least one or more of the following:

[0404] Indication information used to indicate that the RA-SDT process has failed due to cell reselection;

[0405] Indication information used to indicate that the RA-SDT process has failed due to the expiration of the RA-SDT timer;

[0406] Indication information used to indicate that the RA-SDT process fails because the RLC reaches the maximum number of retransmissions.

[0407] Optionally, the second measurement-related information includes at least one or more of the following:

[0408] When the terminal transitions from an inactive state to an idle state, the cell information of the serving cell corresponding to the RA-SDT; for example, the cell information may include, but is not limited to, at least one of the following: cell identifier information, cell frequency information, etc.

[0409] The measurement results of the serving cell corresponding to RA-SDT when the terminal transitions from an inactive state to an idle state;

[0410] The measurement results of neighboring cells when the terminal changes from an inactive state to an idle state;

[0411] After the terminal transitions from an inactive state to an idle state, the cell information of the target cell is obtained; for example, the cell information may include, but is not limited to, at least one of the following: cell identifier information, cell frequency information, etc.

[0412] The measurement results of the target cell after the terminal changes from an inactive state to an idle state;

[0413] The maximum number of retransmissions that cause the RA-SDT process to fail is reached when the RLC reaches its maximum retransmission count.

[0414] Optionally, the RA-SDT related information prior to the non-SDT random access RA access network includes at least one or more of the following:

[0415] The sixth indication information is used to indicate whether RA-SDT has been experienced or not before a non-SDT RA access network;

[0416] The seventh indication information is used to indicate the RA-SDT related SDT type experienced by the terminal when a non-SDT RA procedure is triggered.

[0417] The sixth indication information may be used to indicate, explicitly or implicitly, whether RA-SDT was experienced or not before the RA access network was non-SDT.

[0418] In this embodiment, the terminal may successfully access the network through a non-SDT RA. In this case, the terminal can also report relevant information about the RA-SDT transmission process before it accesses the network through a non-SDT RA during the RA reporting process, in order to optimize the configuration of SDT-related RA resources, etc.

[0419] Optionally, the seventh indication information may explicitly or implicitly indicate the RA-SDT related SDT type experienced by the terminal when triggering a non-SDT RA process; the seventh indication information may be at least one or more of the following:

[0420] Indication information used to indicate that the terminal has failed to undergo the first type of RA-SDT process, triggering the non-SDT RA process;

[0421] Indication information used to indicate that the terminal has failed to undergo the second type of RA-SDT process, triggering the non-SDT RA process;

[0422] Indication information used to indicate that the terminal has failed to transition from a first type of RA-SDT to a second type of RA-SDT, triggering the non-SDT RA process;

[0423] Indication information used to indicate that the terminal has failed to undergo the process of converting from CG-SDT to the first type of RA-SDT, triggering the non-SDT RA process;

[0424] Indication information used to indicate that the terminal fails to undergo the process of converting from CG-SDT to the first type of RA-SDT, and the process of converting from the first type of RA-SDT to the second type of RA-SDT, triggering the non-SDT RA process.

[0425] The first type of RA-SDT procedure can be a two-step random access SDT procedure, i.e., a 2-step RA-SDT procedure; the second type of RA-SDT procedure can be a four-step random access SDT procedure, i.e., a 4-step RA-SDT procedure.

[0426] Optionally, the shared random access channel timing (RO) related information of the RA-SDT process includes at least one or more of the following:

[0427] The eighth indication information is used to indicate that the first type of RA-SDT process and the second type of RA-SDT process share the RO. For example, the eighth indication information can be used to indicate that the first type of RA-SDT process and the second type of RA-SDT process share the RO in an explicit or implicit manner. The implicit eighth indication information is: when the terminal reports the 2-step RA resource in SDT, it uses the 4-step RA resource in SDT. For example, the terminal can indicate that a transition from 2-step RA-SDT to 4-step RA-SDT has occurred by reporting the maximum number of attempts to switch from 2-step RA-SDT to 4-step RA-SDT.

[0428] When the first type of RA-SDT procedure and the second type of RA-SDT procedure share the RO, the number of contention-based random access preambles for the first type of RA-SDT on each SSB;

[0429] For each SSB, the first type of RA-SDT process shares a subset of RO information in the RA resources of the second type of RA-SDT process;

[0430] A ninth indication message used to indicate whether the first type of RA-SDT process uses or does not use the shared RO resource; for example, the ninth indication message may indicate whether the first type of RA-SDT process uses or does not use the shared RO resource in an implicit or explicit manner.

[0431] Optionally, the terminal may send an RA report to the network device, the RA report carrying the second information.

[0432] Optionally, the method further includes:

[0433] The terminal receives RA configuration information sent by the network device; optionally, the process of receiving RA configuration information may include: the terminal obtaining RA configuration information through system broadcast information.

[0434] The terminal performs the RA process according to the RA configuration information;

[0435] The terminal sends third information related to the shared RO of the RA to the network device. The third information is used to optimize the configuration information related to the shared RO of the RA.

[0436] In this embodiment, the terminal receives configuration information sent by the network device, performs the RA procedure according to the RA configuration information, and sends third information related to the shared RO of the RA to the network device. Thus, knowing the third information related to the shared RO of the RA, the network device can optimize the configuration information related to the shared RO of the RA based on the third information, thereby enabling the terminal to more effectively use the shared RO to initiate a random access procedure.

[0437] Optionally, the third information includes one or more of the following:

[0438] The tenth indication information is used to indicate that the first type of RA process and the second type of RA process share the RO; for example, the tenth indication information can be used to indicate that the first type of RA process and the second type of RA process share the RO in an explicit or implicit manner; wherein the implicit tenth indication information is: the terminal uses the resource reporting of 4-step RA when reporting 2-step RA resources, or the terminal can indicate that a transition from 2-step RA to 4-step RA has occurred by reporting the maximum number of attempts of RA to transition from 2-step RA to 4-step RA.

[0439] When the first type of RA procedure and the second type of RA procedure share the RO, the number of contention-based random access preambles on each SSB for the first type of RA;

[0440] For each SSB, the first type of RA process shares a subset of RO information in the RA resources of the second type of RA process;

[0441] Eleventh indication information used to indicate whether the first type of RA process uses or does not use the shared RO resource; for example, the eleventh indication information may indicate whether the first type of RA process uses or does not use the shared RO resource in an implicit or explicit manner.

[0442] Optionally, the terminal may send an RA report to the network device, the RA report carrying the third information.

[0443] like Figure 5 As shown, this embodiment of the invention also provides an information transmission method, including the following steps:

[0444] Step 51: The terminal receives SDT configuration information sent by the network device, the SDT configuration information including random access (RA) configuration information for SDT.

[0445] Step 52: The terminal performs the RA-SDT process according to the SDT configuration information.

[0446] Step 53: The terminal sends the second information related to RA-SDT to the network device. The second information is used to optimize the configuration information related to RA-SDT.

[0447] The second information includes one or more of the following:

[0448] Information related to the reasons for the failure of the RA-SDT process;

[0449] RA-SDT related information prior to random access RA access networks that are not SDT;

[0450] The shared random access channel timing (RO) related information of the RA-SDT process.

[0451] Optionally, the specific details of the reasons for the failure of the RA-SDT process, the specific details of the RA-SDT related information before the non-SDT random access RA access network, and the details of the shared random access channel timing (RO) related information of the RA-SDT process can be found in the above embodiments. To avoid repetition, they will not be repeated here.

[0452] Optionally, the terminal may send an RA report to the network device, the RA report carrying the second information.

[0453] In this embodiment, the terminal receives SDT configuration information sent by the network device, performs an RA-SDT process based on the RA configuration information for SDT in the SDT configuration information, and sends second information related to the RA-SDT to the network device. The first information is used to optimize the RA-SDT related configuration information. This ensures that the network device is aware of the second information related to RA-SDT, enabling the network device to optimize the RA-SDT related configuration information based on the second information, thereby reducing resource waste and ensuring that the terminal can send and receive data more efficiently through SDT.

[0454] like Figure 6 As shown, this embodiment of the invention also provides an information transmission method, including the following steps:

[0455] Step 61: The terminal receives the RA configuration information sent by the network device.

[0456] Step 62: The terminal performs the RA process according to the RA configuration information.

[0457] Step 63: The terminal sends third information related to the shared RO of the RA to the network device. The third information is used to optimize the configuration information related to the shared RO of the RA.

[0458] Optionally, the specific content of the third information can be found in the above embodiments, and will not be repeated here to avoid repetition.

[0459] Optionally, the terminal may send an RA report to the network device, the RA report carrying the third information.

[0460] In this embodiment, the terminal receives configuration information sent by the network device, performs the RA procedure according to the RA configuration information, and sends third information related to the shared RO of the RA to the network device. Thus, knowing the third information related to the shared RO of the RA, the network device can optimize the configuration information related to the shared RO of the RA based on the third information, thereby enabling the terminal to more effectively use the shared RO to initiate a random access procedure.

[0461] The information transmission method of the present invention will be described below with reference to embodiments:

[0462] Example 1: CG resource-related information in the CG-SDT process includes CG resource-related information from successfully transmitted CG-SDT processes; such as... Figure 7 As shown, the specific steps include:

[0463] Step 1: The UE receives SDT configuration information sent by the network side. This process includes the UE obtaining the CG configuration information for SDT in the connected state, or obtaining the CG configuration information for SDT during SDT transmission, and the UE obtaining the RACH configuration for SDT through system broadcast information.

[0464] This section describes the configuration information for the CG used in SDT, including CG resource configuration information and configuration information for the selection criteria used in CG-SDT. For example, it includes the packet threshold value, measurement result threshold value, and TA validity threshold value or timer when selecting CG-SDT. During CG-SDT, the TA used for CG must be valid; otherwise, the UL timing will be misaligned, and the base station will not be able to decode uplink data. To ensure TA validity, one method is that the UE's measurement result cannot exceed the configured TA validity threshold value. If the UE's measurement result exceeds this threshold value, it is considered that the UE has made a large-scale movement, resulting in the TA being invalid. Another method to ensure TA validity is to configure a timing advance timer (TAT) on the UE side. The TA is always valid until the TAT expires.

[0465] Step 2: When the UE is in an inactive or idle state, it records the information of the CG resource and marks the successful triggering of SDT transmission on that CG resource. The recorded CG resource information includes, but is not limited to, at least one of the following:

[0466] The terminal identification information of the terminal; for example: the terminal identification information, i.e., the UE ID, can be I-RNTI, SDT-RNTI, etc.

[0467] Cell information corresponding to the CG resources of a successfully transmitted CG-SDT process; for example, cell information may include, but is not limited to, at least one of the following: cell identifier information, cell frequency information, etc.

[0468] The CG resource group information corresponding to the CG resources in the successfully transmitted CG-SDT process; for example: the CG resource group includes multiple sets of CG resources, each set of CG resources has an ID, a corresponding period, the time domain and / or frequency domain location of the CG in each period, available MCS information, beam information corresponding to the CG, and other information; optionally, the CG resource group information can be at least one of the above-mentioned other information and / or ID information.

[0469] The beam information corresponding to the CG resource in the successfully transmitted CG-SDT process; for example, the beam information may include, but is not limited to, at least one of the following: beam identification information, beam configuration information, and beam-level measurement results. Here, beam refers to SSB, and the SSB information corresponding to the CG resource includes, but is not limited to, at least one of the following: SSB ID information, SSB configuration information, and SSB-level measurement results.

[0470] The status information of the terminal during the successful transmission of CG-SDT; for example, the status information may indicate that the terminal is in an Idle state (such as SDT / SON), or the status information may indicate that the terminal is in an inactive state.

[0471] The status information corresponds to the CG resource allocation information; for example, the CG resource allocation information may include, but is not limited to, at least one of the following: proportion information, threshold information, etc. For example, the proportion of CG resources that can be used by terminals in the idle state, or the proportion of CG resources that can be used by terminals in the inactive state, in the configured shared CG resources. For instance, if the network device configures 10 shared CG resources, where 1-5 are used by terminals in the inactive state, and 5-10 are shared by terminals in both the idle and inactive states, the terminal needs to report this proportion to the base station; optionally, this information may be historical information that has been updated by the base station, so it needs to be reported.

[0472] The measurement threshold information corresponding to the CG resources in the CG configuration information; for example: the measurement threshold information corresponding to the CG resources when using CG-SDT configured on the network device side, or the measurement threshold information of the beam corresponding to the CG resources when using CG-SDT configured on the network device side.

[0473] The threshold value information for the payload size in the CG configuration information;

[0474] The terminal's CG-based RNTI information when inactive; for example, the first indication information may include: indication information for indicating that the CG-SDT timer has expired and no feedback has been received for the initial transmission, indication information for indicating that the CG-SDT timer has expired and no feedback has been received for subsequent transmissions (non-initial transmissions, or retransmissions), etc.

[0475] Step 3: The UE reports the information to the network side. Based on the CG resource information related to the successful execution of the CG-SDT process reported by the UE, the network side determines whether to adjust the configuration of the CG resources corresponding to this UE, or update the TAT value or TA validity threshold related to TAT validity. More details include the process:

[0476] For example, based on the size of the data packets that the UE successfully triggers the CG-SDT process and the channel quality results, more or less CG resources can be allocated to the UE, and the MCS parameters corresponding to the CG resources can be adjusted. If the UE's channel quality is consistently good, less CG resources can be allocated and higher MSC parameters can be used. This can improve the utilization rate of CG resources and increase the efficiency of CG usage.

[0477] For example, if the TAT when the UE successfully triggers SDT-CG has not expired and the change in the measurement result has not exceeded the threshold of TA validity, a longer TAT can be assigned to the UE to increase the probability that the UE can successfully use CG-SDT.

[0478] Example 2: CG resource-related information in the CG-SDT process includes CG resource-related information in CG-SDT processes that initially fail to transmit; such as... Figure 8 As shown, the specific steps include:

[0479] Step 1: The UE receives SDT configuration information sent by the network side. This process includes the UE obtaining the CG configuration information for SDT in the connected state, or obtaining the CG configuration information for SDT during SDT transmission, and the UE obtaining the RACH configuration for SDT through system broadcast information.

[0480] This section describes the configuration information for the CG used in SDT, including CG resource configuration information and configuration information for the selection criteria used in CG-SDT. For example, it includes the packet threshold value, measurement result threshold value, and TA validity threshold value or timer when selecting CG-SDT. During CG-SDT, the TA used for CG must be valid; otherwise, the UL timing will be misaligned, and the base station will not be able to decode uplink data. To ensure TA validity, one method is that the UE's measurement result cannot exceed the configured TA validity threshold value. If the UE's measurement result exceeds this threshold value, it is considered that the UE has made a large-scale movement, resulting in the TA being invalid. Another method to ensure TA validity is to configure a timing advance timer (TAT) on the UE side. The TA is always valid until the TAT expires.

[0481] Step 2: When the UE is in an inactive or idle state, it records information about the CG resources that failed to trigger the initial CG-SDT process. The recorded information includes, but is not limited to, at least one of the following:

[0482] The terminal identification information of the terminal; for example: the terminal identification information, i.e., the UE ID, can be I-RNTI, SDT-RNTI, etc.

[0483] Cell information corresponding to the CG resources in the failed CG-SDT process; for example, cell information may include, but is not limited to, at least one of the following: cell identifier information, cell frequency information, etc.

[0484] The CG resource group information corresponding to the CG resources in the failed CG-SDT process; for example: the CG resource group includes multiple sets of CG resources, each set of CG resources has an ID, a corresponding period, the time domain and / or frequency domain location of the CG in each period, available MCS information, beam information corresponding to the CG, and other information; optionally, the CG resource group information can be at least one of the above-mentioned other information and / or ID information.

[0485] The beam information corresponding to the CG resource in the failed CG-SDT process; for example, the beam information may include, but is not limited to, at least one of the following: beam identifier (Beam ID) information, beam configuration information, and beam-level measurement results, etc. Here, beam refers to SSB, and the SSB information corresponding to the CG resource includes, but is not limited to, at least one of the following: SSB ID information, SSB configuration information, and SSB-level measurement results, etc.

[0486] The terminal's status information during a failed CG-SDT transmission process; for example, the status information may indicate that the terminal is in an idle state (such as SDT / SON), or the status information may indicate that the terminal is in an inactive state.

[0487] The status information corresponds to the CG resource allocation information; for example, the CG resource allocation information may include, but is not limited to, at least one of the following: proportion information, threshold information, etc. For example, the proportion of CG resources that can be used by terminals in the idle state, or the proportion of CG resources that can be used by terminals in the inactive state, in the configured shared CG resources. For instance, if the network device configures 10 shared CG resources, where 1-5 are used by terminals in the inactive state, and 5-10 are shared by terminals in both the idle and inactive states, the terminal needs to report this proportion to the base station; optionally, this information may be historical information that has been updated by the base station, so it needs to be reported.

[0488] The measurement threshold information corresponding to the CG resources in the CG configuration information; for example: the measurement threshold information corresponding to the CG resources when using CG-SDT configured on the network device side, or the measurement threshold information of the beam corresponding to the CG resources when using CG-SDT configured on the network device side.

[0489] The threshold value information for the payload size in the CG configuration information;

[0490] This is an indication message used to indicate that the CG-SDT timer has expired and no feedback has been received during the initial transmission.

[0491] The terminal in the inactive state uses the Cell Radio Network Temporary Identifier (RNTI) information based on the Cell Resource Classification (CG). For example, the CG resource may be UE-specific and there may only be a UE-specific CG configuration in one cell. Therefore, the UE can report its CG-RNTI in the inactive state, which is the Cell Radio Network Temporary Identifier (C-RNTI) information or I-RNTI information from the last time it was in the connected state. The network device can update the CG configuration information based on this information without having to report the CG configuration information from the previous step.

[0492] Step 3: The UE reports the information to the network side. Based on the CG resource information related to the failed CG-SDT process reported by the UE, the network side determines whether to adjust the configuration of the CG resources corresponding to this UE, or update the TAT value or TA validity threshold related to TAT validity. More details include the process:

[0493] For example, based on the size of the data packets that cause the UE to fail to trigger the CG-SDT procedure and the channel quality results, more or less CG resources can be allocated to the UE, and the MCS parameters corresponding to the CG resources can be adjusted. If the UE's channel quality is consistently poor, more CG resources and lower MSC parameters can be allocated, thus improving the success rate of the UE using CG-SDT.

[0494] For example, if the TAT expires when the UE initially selects CG-SDT and the change in the measurement result exceeds the threshold of TA validity, a shorter TAT can be assigned to the UE to increase the probability that the UE can successfully use CG-SDT.

[0495] Example 3: CG resource-related information in the CG-SDT process includes CG resource-related information in subsequent failed CG-SDT processes; such as... Figure 9 As shown, the specific steps include:

[0496] Step 1: The UE receives SDT configuration information sent by the network side. This process includes the UE obtaining the CG configuration information for SDT in the connected state, or obtaining the CG configuration information for SDT during SDT transmission, and the UE obtaining the RACH configuration for SDT through system broadcast information.

[0497] This section describes the configuration information for the CG used in SDT, including CG resource configuration information and configuration information for the selection criteria used in CG-SDT. For example, it includes the packet threshold value, measurement result threshold value, and TA validity threshold value or timer when selecting CG-SDT. During CG-SDT, the TA used for CG must be valid; otherwise, the UL timing will be misaligned, and the base station will not be able to decode uplink data. To ensure TA validity, one method is that the UE's measurement result cannot exceed the configured TA validity threshold value. If the UE's measurement result exceeds this threshold value, it is considered that the UE has made a large-scale movement, resulting in the TA being invalid. Another method to ensure TA validity is to configure a timing advance timer (TAT) on the UE side. The TA is always valid until the TAT expires.

[0498] Step 2: When the UE is in an inactive or idle state, it records information about the CG resources that caused the subsequent transmission to fail and trigger the CG-SDT process. The recorded information includes, but is not limited to, at least one of the following:

[0499] The terminal identification information of the terminal; for example: the terminal identification information, i.e., the UE ID, can be I-RNTI, SDT-RNTI, etc.

[0500] Cell information corresponding to the CG resources in the failed CG-SDT process; for example, cell information may include, but is not limited to, at least one of the following: cell identifier information, cell frequency information, etc.

[0501] The CG resource group information corresponding to the CG resources in the failed CG-SDT process; for example: the CG resource group includes multiple sets of CG resources, each set of CG resources has an ID, a corresponding period, the time domain and / or frequency domain location of the CG in each period, available MCS information, beam information corresponding to the CG, and other information; optionally, the CG resource group information can be at least one of the above-mentioned other information and / or ID information.

[0502] The beam information corresponding to the CG resource in the failed CG-SDT process; for example, the beam information may include, but is not limited to, at least one of the following: beam identifier (Beam ID) information, beam configuration information, and beam-level measurement results, etc. Here, beam refers to SSB, and the SSB information corresponding to the CG resource includes, but is not limited to, at least one of the following: SSB ID information, SSB configuration information, and SSB-level measurement results, etc.

[0503] The terminal's status information during a failed CG-SDT transmission process; for example, the status information may indicate that the terminal is in an idle state (such as SDT / SON), or the status information may indicate that the terminal is in an inactive state.

[0504] The status information corresponds to the CG resource allocation information; for example, the CG resource allocation information may include, but is not limited to, at least one of the following: proportion information, threshold information, etc. For example, the proportion of CG resources that can be used by terminals in the idle state, or the proportion of CG resources that can be used by terminals in the inactive state, in the configured shared CG resources. For instance, if the network device configures 10 shared CG resources, where 1-5 are used by terminals in the inactive state, and 5-10 are shared by terminals in both the idle and inactive states, the terminal needs to report this proportion to the base station; optionally, this information may be historical information that has been updated by the base station, so it needs to be reported.

[0505] The measurement threshold information corresponding to the CG resources in the CG configuration information; for example: the measurement threshold information corresponding to the CG resources when using CG-SDT configured on the network device side, or the measurement threshold information of the beam corresponding to the CG resources when using CG-SDT configured on the network device side.

[0506] The threshold value information for the payload size in the CG configuration information;

[0507] This is used to indicate that the CG-SDT timer has expired and no feedback has been received for subsequent transmissions.

[0508] The terminal in the inactive state uses the Cell Radio Network Temporary Identifier (RNTI) information based on the Cell Resource Classification (CG). For example, the CG resource may be UE-specific and there may only be a UE-specific CG configuration in one cell. Therefore, the UE can report its CG-RNTI in the inactive state, which is the Cell Radio Network Temporary Identifier (C-RNTI) information or I-RNTI information from the last time it was in the connected state. The network device can update the CG configuration information based on this information without having to report the CG configuration information from the previous step.

[0509] Step 3: The UE reports the information to the network side. Based on the CG resource information related to the failed CG-SDT process reported by the UE, the network side determines whether to adjust the configuration of the CG resources corresponding to this UE, or update the TAT value or TA validity threshold related to TAT validity. More details include the process:

[0510] For example, depending on the size of the data packet triggering the CG-SDT procedure and the channel quality results, allocate more or less CG resources to the UE and adjust the MCS parameters corresponding to the CG resources. If the UE's channel quality remains poor, allocate more CG resources and lower MSC parameters to improve the success rate of the UE using CG-SDT.

[0511] For example, if the TAT (Time Access Time) expires when the UE initially selects SDT-CG, and the change in the measurement result exceeds the threshold for TA (Time Access Validation) validity, a shorter TAT can be assigned to the UE to increase the probability of the UE successfully using SDT-CG. If the CG-SDT timer expires and no feedback is received in subsequent transmissions (non-initial transmissions), the network side may need to further optimize the parameters related to data packet transmission between CU and DU.

[0512] Example 4: The information related to CG-SDT includes information related to the reasons for the failure of the CG-SDT process, and the information related to RA-SDT includes information related to the reasons for the failure of the RA-SDT process. In other words, the information related to SDT includes information related to the reasons for the failure of the SDT process.

[0513] Specifically, the UE's SDT process may use either CG-SDT or RA-SDT to send data packets. Regardless of the SDT method used, the SDT process may fail due to the following reasons:

[0514] (1) Cell reselection;

[0515] (2) The SDT timer expired;

[0516] (3) The RLC reaches the maximum number of retransmissions;

[0517] If the above situation occurs, the UE may change from the inactive state to the ilde state and consider the SDT to have failed. The terminal can report this information to the base station for the base station to optimize the CG resources or RA resources of the SDT, or to optimize the configuration of cell selection reselection parameters, RLF related parameters, etc.

[0518] This information includes, but is not limited to, at least one of the following:

[0519] Indication information used to indicate that the CG-SDT process has failed due to cell reselection;

[0520] Indication information used to indicate that the CG-SDT process has failed due to the expiration of the CG-SDT timer;

[0521] Indication information used to indicate that the CG-SDT process fails because the RLC reaches the maximum number of retransmissions.

[0522] Indication information used to indicate that the RA-SDT process has failed due to cell reselection;

[0523] Indication information used to indicate that the RA-SDT process has failed due to the expiration of the RA-SDT timer;

[0524] Indication information used to indicate that the RA-SDT process fails because the RLC reaches the maximum number of retransmissions.

[0525] When the terminal transitions from an inactive state to an idle state, the cell information of the serving cell corresponding to the CG-SDT; for example, the cell information may include, but is not limited to, at least one of the following: cell identifier information, cell frequency information, etc.

[0526] The measurement results of the serving cell corresponding to CG-SDT when the terminal transitions from an inactive state to an idle state;

[0527] The measurement results of neighboring cells when the terminal changes from an inactive state to an idle state;

[0528] After the terminal transitions from an inactive state to an idle state, the cell information of the target cell is obtained.

[0529] The measurement results of the target cell after the terminal changes from an inactive state to an idle state;

[0530] The maximum number of retransmissions that cause the CG-SDT process to fail is reached when the RLC reaches its maximum retransmission count.

[0531] When the terminal transitions from an inactive state to an idle state, the cell information of the serving cell corresponding to the RA-SDT; for example, the cell information may include, but is not limited to, at least one of the following: cell identifier information, cell frequency information, etc.

[0532] The measurement results of the serving cell corresponding to RA-SDT when the terminal transitions from an inactive state to an idle state;

[0533] The measurement results of neighboring cells when the terminal changes from an inactive state to an idle state;

[0534] After the terminal transitions from an inactive state to an idle state, the cell information of the target cell is obtained.

[0535] The measurement results of the target cell after the terminal changes from an inactive state to an idle state;

[0536] The maximum number of retransmissions that cause the RA-SDT process to fail is reached when the RLC reaches its maximum retransmission count.

[0537] Based on the above information, the network side will further optimize the relevant parameters. For example, if the reason for the state transition is that the RLC layer has reached the maximum number of retransmissions and the channel quality information of the source cell has been reported, it means that the channel quality of the network is very poor. The network side can increase the threshold value of SDT transmission so that these UEs cannot trigger the use of SDT transmission based on such channel measurement. That is, the network has increased the channel threshold value requirement for SDT transmission.

[0538] Example 5: CG-SDT related information includes CG-SDT related information before the RA access network without SDT, and RA-SDT related information includes RA-SDT related information before the RA access network without SDT, that is, SDT related information includes SDT related information before the RA access network without SDT.

[0539] Specifically, for RA-SDT, the network needs to configure dedicated 2-step RACH resources for SDT and dedicated 4-step RACH resources for SDT. Both types of resources are contention-based RACH resources. If the RA resources for SDT are not optimized, the UE may never meet the conditions for RA-SDT access, and the RA resources configured by the network for SDT will be wasted, and the UE will not be able to enjoy the benefits of low power consumption and short latency in the RA-SDT process.

[0540] The terminal may successfully access the network through an existing non-SDT RA. During the RA reporting process, the terminal can report whether it has undergone SDT transmission before accessing the network through the non-SDT RA, in order to optimize the configuration of SDT-related RA resources or CG resources.

[0541] The information to be reported includes, but is not limited to, at least one of the following:

[0542] Indication information used to indicate whether an SDT transmission process is experienced before a non-SDT RA access network, such as whether RA-SDT and / or CG-SDT are experienced before a non-SDT RA access network;

[0543] Indication information used to indicate that the terminal has failed the CG-SDT process and triggered the non-SDT RA process; for example, the terminal can also indicate whether the failure was an initial transmission failure or a subsequent transmission failure.

[0544] Indication information used to indicate that the terminal has failed to undergo the process of converting from CG-SDT to the first type of RA-SDT, triggering the non-SDT RA process;

[0545] Indication information used to indicate that the terminal fails to undergo the process of converting from CG-SDT to the first type of RA-SDT, and the process of converting from the first type of RA-SDT to the second type of RA-SDT, triggering the non-SDT RA process.

[0546] Indication information used to indicate that the terminal has experienced a failure of the first type of RA-SDT process, triggering the non-SDT RA process; for example, the terminal can also indicate whether the terminal experienced an initial transmission failure or a subsequent transmission failure.

[0547] Indication information used to indicate that the terminal has experienced a failure of the second type of RA-SDT process, triggering the non-SDT RA process; for example, the terminal can also indicate whether the terminal experienced an initial transmission failure or a subsequent transmission failure.

[0548] Indication information used to indicate that the terminal has failed to transition from a first type of RA-SDT to a second type of RA-SDT, triggering the non-SDT RA process;

[0549] Indication information used to indicate that the terminal has failed to undergo the process of converting from CG-SDT to the first type of RA-SDT, triggering the non-SDT RA process;

[0550] Indication information used to indicate that the terminal fails to undergo the process of converting from CG-SDT to the first type of RA-SDT, and the process of converting from the first type of RA-SDT to the second type of RA-SDT, triggering the non-SDT RA process.

[0551] Based on the above information, the network side will make a preliminary judgment on the UE's SDT data transmission process before RA random access, which can be used by the network side to decide whether to allow the UE to continue reporting SDT-related network optimization parameters.

[0552] Optionally, the above information can be reported to the network side via a RA report.

[0553] Example 6: Optimization of RA resources;

[0554] Specifically, a UE might initiate a random access procedure from a 2-step RA, but due to a fallback mechanism or reaching the maximum number of transmissions required for a 2-step RA, it might fall back to a 4-step RA. The UE can report the uplink resource information of the RA to optimize its uplink resource configuration. Regarding this fallback from a 2-step RA to a 4-step RA, if the network is configured with a shared RO, the UE might report the same RA resource information for both the 2-step and 4-step RA. Therefore, it can report only the resource configuration information for either the 2-step or 4-step RA, allowing the network to explicitly know that the UE successfully accessed the network using a 4-step RA under a shared RO configuration. However, this only informs the network that the terminal is operating in a shared RO mode; it may not record the specific parameters used in the shared RO configuration, thus preventing further optimization of these parameters.

[0555] Optionally, the UE may report shared RO-related parameters to the network in the RA report, which may include information related to msgA-CB-PreamblesPerSSB-PerSharedRO and msgA-SSB-SharedRO-MaskIndex, to indicate that the UE's 2-step RA shares the random access channel resources of the 4-step RA, so that the network can further optimize the ratio parameters of shared resources.

[0556] Specifically, msgA-CB-PreamblesPerSSB-PerSharedRO represents the number of contention-based random access preambles for 2-step RA type mapped to each SSB when the PRACH occasions are shared between 2-step and 4-step RA types.

[0557] `msgA-SSB-SharedRO-MaskIndex` represents a subset of shared ROs for 2-step RA and 4-step RA types for each SSB. If 2-step RA type PRACH occasions are shared with 4-step RA type PRACH occasions and `msgA-SSB-SharedRO-MaskIndex` is not configured, then all 4-step RA type PRACH occasions are available for 2-step RA type.

[0558] Optionally, when reporting RA-SDT in the RA report, 2-step RA-SDT and 4-step RA-SDT share relevant information about RA resources. The reported content includes, but is not limited to, at least one of the following:

[0559] The network side configures the msgA-CB-PreamblesPerSSB-PerSharedRO parameter for SDT, which is the number of contention-based random access preambles used for 2-step RA on each SSB when 2-step RA-SDT and 4-step RA-SDT share PRACH occasions.

[0560] The msgA-SSB-SharedRO-MaskIndex parameter configured on the network side for SDT means that for each SSB, 2-step RA-SDT shares a subset of PRACH occasions information in the RA resources of 4-step RA-SDT.

[0561] Indication information used to indicate whether a 2-step RA-SDT uses shared RO resources of a 4-step RA-SDT, wherein the RO resources include time-frequency resources and / or winding resources. The indication information can implicitly indicate that the 2-step RA-SDT shares the RO resources of the 4-step RA by reporting the PUSCH resource information of the 4-step RA.

[0562] Optionally, the terminal can report the above information to the network side through RA reports.

[0563] In the above scheme, the network side can optimize the CG or RA configuration of SDT by using the recorded CG-SDT procedure reported by the UE, or the SDT procedure information before normal RA access, so that the UE can use SDT to send and receive data more effectively. In addition, the network side can also optimize the relevant configuration of shared RO by using the shared RO information reported by the UE, so that the UE can use shared RO to initiate random access procedure more effectively.

[0564] The network device involved in this application embodiment can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, a base station may also be called an access point, or a device in an access network that communicates with a wireless terminal device through one or more sectors on the air interface, or other names. The network device can 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 can also coordinate the attribute management of the air interface. For example, the network equipment involved in the embodiments of this application can be a base transceiver station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), 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 system, a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of this application. 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.

[0565] The terminal devices involved in the embodiments of this application 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 of this application.

[0566] The above embodiments describe the information transmission method on the terminal side of the present invention. The following embodiments describe the information transmission method on the network device side.

[0567] like Figure 10 As shown, this embodiment of the invention provides a configuration optimization method, including the following steps:

[0568] Step 101: The network device sends small data transmission SDT configuration information to the terminal, the SDT configuration information including configuration authorization CG configuration information for SDT.

[0569] Step 102: The network device receives first information related to CG-SDT for small data transmission based on configuration authorization sent by the terminal. The first information is obtained by the terminal during the CG-SDT process based on the CG configuration information.

[0570] Step 103: The network device optimizes the CG-SDT-related configuration information based on the first information.

[0571] The first information includes one or more of the following:

[0572] CG resource-related information in the CG-SDT process;

[0573] Information related to the reasons for the failure of the CG-SDT process;

[0574] CG-SDT related information prior to random access (RA) to a non-SDT network.

[0575] Optionally, the specific content of the SDT configuration information in this embodiment of the invention, the method of the network device sending the SDT configuration information to the terminal, and the specific content of the CG resource-related information of the CG-SDT process, the reason-related information of the failure of the CG-SDT process, and the CG-SDT-related information before the non-SDT random access RA access network also correspond to the above-mentioned terminal side. To avoid repetition, they will not be described again here.

[0576] Optionally, the way the network device optimizes the configuration information related to CG-SDT can depend on the network implementation. For specific examples, please refer to Embodiments 1 to 5 above. To avoid repetition, they will not be repeated here.

[0577] Optionally, the SDT configuration information further includes RA configuration information for SDT, and the method further includes:

[0578] The network device receives second information related to RA-SDT for small data transmission based on random access sent by the terminal. The second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information.

[0579] The network device optimizes the RA-SDT-related configuration information based on the second information;

[0580] The second information includes one or more of the following:

[0581] Information related to the reasons for the failure of the RA-SDT process;

[0582] RA-SDT related information prior to random access RA access networks that are not SDT;

[0583] The shared random access channel timing (RO) related information of the RA-SDT process.

[0584] Optionally, the specific content of the SDT configuration information in this embodiment of the invention, the method by which the network device sends the SDT configuration information to the terminal, and the related information on the reasons for the failure of the RA-SDT process, the RA-SDT related information before the non-SDT random access RA access network, and the shared random access channel timing RO related information of the RA-SDT process also correspond to the above-mentioned terminal side. To avoid repetition, they will not be described again here.

[0585] Optionally, the way the network device optimizes the RA-SDT-related configuration information may depend on the network implementation. For specific examples, please refer to embodiments 4 to 6 above. To avoid repetition, they will not be repeated here.

[0586] Optionally, the configuration optimization method is characterized by further comprising:

[0587] The network device sends RA configuration information to the terminal;

[0588] The network device receives third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal during the RA process based on the RA configuration information;

[0589] The network device optimizes the configuration information related to RA sharing RO based on the third information.

[0590] Optionally, the specific content of the RA configuration information in this embodiment of the invention, the method by which the network device sends the RA configuration information to the terminal, and the third information related to the shared RO of the RA also correspond to those of the terminal. To avoid repetition, these details will not be repeated here.

[0591] Optionally, the way the network device optimizes the configuration information related to the shared RO of the RA can depend on the network implementation. For specific examples, please refer to Embodiment 6 above. To avoid repetition, it will not be described again here.

[0592] It should be noted that the method on the network device side in this embodiment of the invention corresponds to the method on the terminal side and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0593] like Figure 11 As shown, this embodiment of the invention provides a configuration optimization method, including the following steps:

[0594] Step 11: The network device sends small data transmission SDT configuration information to the terminal, the SDT configuration information including random access RA configuration information for SDT.

[0595] Step 112: The network device receives second information related to RA-SDT for small data transmission based on random access sent by the terminal. The second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information.

[0596] Step 113: The network device optimizes the RA-SDT-related configuration information based on the second information.

[0597] The second information includes one or more of the following:

[0598] Information related to the reasons for the failure of the RA-SDT process;

[0599] RA-SDT related information prior to random access RA access networks that are not SDT;

[0600] The shared random access channel timing (RO) related information of the RA-SDT process.

[0601] Optionally, the specific content of the SDT configuration information in this embodiment of the invention, the method by which the network device sends the SDT configuration information to the terminal, and the related information on the reasons for the failure of the RA-SDT process, the RA-SDT related information before the non-SDT random access RA access network, and the shared random access channel timing RO related information of the RA-SDT process also correspond to the above-mentioned terminal side. To avoid repetition, they will not be described again here.

[0602] Optionally, the way the network device optimizes the RA-SDT-related configuration information may depend on the network implementation. For specific examples, please refer to embodiments 4 to 6 above. To avoid repetition, they will not be repeated here.

[0603] It should be noted that the method on the network device side in this embodiment of the invention corresponds to the method on the terminal side and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0604] like Figure 12 As shown, this embodiment of the invention provides a configuration optimization method, including the following steps:

[0605] Step 121: The network device sends random access RA configuration information to the terminal;

[0606] Step 122: The network device receives third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal during the RA process based on the RA configuration information;

[0607] Step 123: The network device optimizes the configuration information related to RA sharing RO based on the third information.

[0608] Optionally, the specific content of the RA configuration information in this embodiment of the invention, the method by which the network device sends the RA configuration information to the terminal, and the third information related to the shared RO of the RA also correspond to those of the terminal. To avoid repetition, these details will not be repeated here.

[0609] Optionally, the way the network device optimizes the configuration information related to the shared RO of the RA can depend on the network implementation. For specific examples, please refer to Embodiment 6 above. To avoid repetition, it will not be described again here.

[0610] It should be noted that the method on the network device side in this embodiment of the invention corresponds to the method on the terminal side and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0611] The above embodiments describe the information transmission method of the present invention. The following embodiments will further describe the corresponding devices, terminals and network equipment in conjunction with the accompanying drawings.

[0612] Specifically, such as Figure 13 As shown, the terminal 1300 of this embodiment includes:

[0613] The first receiving unit 1310 is used to receive small data transmission SDT configuration information sent by the network device, wherein the SDT configuration information includes configuration authorization CG configuration information for SDT;

[0614] The first processing unit 1320 is used to perform a small data transmission CG-SDT process based on configuration authorization according to the CG configuration information;

[0615] The first sending unit 1330 is used to send first information related to CG-SDT to the network device, the first information being used to optimize CG-SDT related configuration information;

[0616] The first information includes one or more of the following:

[0617] CG resource-related information in the CG-SDT process;

[0618] Information related to the reasons for the failure of the CG-SDT process;

[0619] CG-SDT related information prior to random access (RA) to a non-SDT network.

[0620] Optionally, the CG resource-related information of the CG-SDT process includes at least one or more of the following:

[0621] The terminal identification information of the terminal;

[0622] Cell information corresponding to the CG resources in the CG-SDT process;

[0623] Information about the CG resource group corresponding to the CG resources in the CG-SDT process;

[0624] Beam information corresponding to CG resources in the CG-SDT process;

[0625] The terminal's status information during the CG-SDT process;

[0626] The status information corresponds to the CG resource allocation information;

[0627] The measurement threshold information corresponding to the CG resources in the CG configuration information;

[0628] The threshold value information for the payload size in the CG configuration information;

[0629] The terminal's CG-based temporary wireless network identifier (RNTI) information when inactive.

[0630] Optionally, in the case that the CG-SDT process is a failed CG-SDT process, the CG resource-related information further includes:

[0631] This is the first indication information used to indicate that the CG-SDT timer has expired and no CG-SDT transmission feedback has been received.

[0632] Optionally, information related to the cause of failure in the CG-SDT process includes at least one or more of the following:

[0633] Second indication information used to indicate the cause of failure in the CG-SDT process;

[0634] The first measurement-related information of the terminal transitioning from an inactive state to an idle state.

[0635] Optionally, the second indication information is at least one or more of the following:

[0636] Indication information used to indicate that the CG-SDT process has failed due to cell reselection;

[0637] Indication information used to indicate that the CG-SDT process has failed due to the expiration of the CG-SDT timer;

[0638] Indication information used to indicate that the CG-SDT process has failed because the Radio Link Control (RLC) has reached the maximum number of retransmissions.

[0639] Optionally, the first measurement-related information includes at least one or more of the following:

[0640] When the terminal transitions from an inactive state to an idle state, the cell information of the serving cell corresponding to CG-SDT is obtained.

[0641] The measurement results of the serving cell corresponding to CG-SDT when the terminal transitions from an inactive state to an idle state;

[0642] The measurement results of neighboring cells when the terminal changes from an inactive state to an idle state;

[0643] After the terminal transitions from an inactive state to an idle state, the cell information of the target cell is obtained.

[0644] The measurement results of the target cell after the terminal changes from an inactive state to an idle state;

[0645] The maximum number of retransmissions that cause the CG-SDT process to fail is reached when the RLC reaches its maximum retransmission count.

[0646] Optionally, SDT-related information prior to the RA access network (excluding SDT) includes at least one or more of the following:

[0647] Third indication information used to indicate whether CG-SDT or not has been experienced before RA access network is not subject to SDT;

[0648] Fourth indication information used to indicate the type of SDT related to CG-SDT experienced by the terminal when a non-SDT RA process is triggered.

[0649] Optionally, the fourth indication information is at least one or more of the following:

[0650] Indication information used to indicate that the terminal has failed to undergo the CG-SDT process, triggering the non-SDT RA process;

[0651] Indication information used to indicate that the terminal has failed to undergo the process of converting from CG-SDT to the first type of RA-SDT, triggering the non-SDT RA process;

[0652] Indication information used to indicate that the terminal fails to undergo the process of converting from CG-SDT to the first type of RA-SDT, and the process of converting from the first type of RA-SDT to the second type of RA-SDT, triggering the non-SDT RA process.

[0653] Optionally, the SDT configuration information further includes RA configuration information for SDT, and the terminal 1300 further includes:

[0654] The second processing unit is used for the terminal to perform the small data transmission RA-SDT process based on random access according to the SDT configuration information;

[0655] The second sending unit is used to send the second information related to RA-SDT to the network device, the second information being used to optimize the configuration information related to RA-SDT;

[0656] The second information includes one or more of the following:

[0657] Information related to the reasons for the failure of the RA-SDT process;

[0658] RA-SDT related information prior to random access RA access networks that are not SDT;

[0659] The shared random access channel timing (RO) related information of the RA-SDT process.

[0660] Optionally, information related to the cause of failure in the RA-SDT process includes:

[0661] The fifth indication information used to indicate the cause of failure in the RA-SDT process;

[0662] The second measurement-related information is used to transition the terminal from an inactive state to an idle state.

[0663] Optionally, the fifth indication information is at least one or more of the following:

[0664] Indication information used to indicate that the RA-SDT process has failed due to cell reselection;

[0665] Indication information used to indicate that the RA-SDT process has failed due to the expiration of the RA-SDT timer;

[0666] Indication information used to indicate that the RA-SDT process fails because the RLC reaches the maximum number of retransmissions.

[0667] Optionally, the second measurement-related information includes at least one or more of the following:

[0668] When the terminal transitions from an inactive state to an idle state, the cell information of the serving cell corresponding to RA-SDT is obtained.

[0669] The measurement results of the serving cell corresponding to RA-SDT when the terminal transitions from an inactive state to an idle state;

[0670] The measurement results of neighboring cells when the terminal changes from an inactive state to an idle state;

[0671] After the terminal transitions from an inactive state to an idle state, the cell information of the target cell is obtained.

[0672] The measurement results of the target cell after the terminal changes from an inactive state to an idle state;

[0673] The maximum number of retransmissions that cause the RA-SDT process to fail is reached when the RLC reaches its maximum retransmission count.

[0674] Optionally, the RA-SDT related information prior to the non-SDT random access RA access network includes at least one or more of the following:

[0675] The sixth indication information is used to indicate whether RA-SDT has been experienced or not before a non-SDT RA access network;

[0676] The seventh indication information is used to indicate the RA-SDT related SDT type experienced by the terminal when a non-SDT RA procedure is triggered.

[0677] Optionally, the seventh indication information is at least one or more of the following:

[0678] Indication information used to indicate that the terminal has failed to undergo the first type of RA-SDT process, triggering the non-SDT RA process;

[0679] Indication information used to indicate that the terminal has failed to undergo the second type of RA-SDT process, triggering the non-SDT RA process;

[0680] Indication information used to indicate that the terminal has failed to transition from a first type of RA-SDT to a second type of RA-SDT, triggering the non-SDT RA process;

[0681] Indication information used to indicate that the terminal has failed to undergo the process of converting from CG-SDT to the first type of RA-SDT, triggering the non-SDT RA process;

[0682] Indication information used to indicate that the terminal fails to undergo the process of converting from CG-SDT to the first type of RA-SDT, and the process of converting from the first type of RA-SDT to the second type of RA-SDT, triggering the non-SDT RA process.

[0683] Optionally, the shared random access channel timing (RO) related information of the RA-SDT process includes at least one or more of the following:

[0684] The eighth indication information used to indicate that the first type of RA-SDT process and the second type of RA-SDT process share the RO;

[0685] When the first type of RA-SDT procedure and the second type of RA-SDT procedure share the RO, the number of contention-based random access preambles for the first type of RA-SDT on each SSB;

[0686] For each SSB, the first type of RA-SDT process shares a subset of RO information in the RA resources of the second type of RA-SDT process;

[0687] Ninth indication information used to indicate whether the first type of RA-SDT process uses or does not use the shared RO resource.

[0688] Optionally, the terminal 1300 further includes:

[0689] The second receiving unit is used to receive RA configuration information sent by the network device;

[0690] The third processing unit is used to perform the RA process according to the RA configuration information;

[0691] The third sending unit is used to send third information related to the shared RO of the RA to the network device, and the third information is used to optimize the configuration information related to the shared RO of the RA.

[0692] Optionally, the third information includes one or more of the following:

[0693] The tenth instruction information used to indicate that the first type of RA process and the second type of RA process share the RO;

[0694] When the first type of RA procedure and the second type of RA procedure share the RO, the number of contention-based random access preambles on each SSB for the first type of RA;

[0695] For each SSB, the first type of RA process shares a subset of RO information in the RA resources of the second type of RA process;

[0696] Eleventh indication information used to indicate whether the first type of RA process uses or does not use the shared RO resource.

[0697] It should be noted that the terminal provided in this embodiment of the invention can implement all the method steps implemented in the method embodiment applied to the terminal, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0698] Specifically, embodiments of the present invention also provide a terminal, including:

[0699] The receiving unit is used to receive small data transmission SDT configuration information sent by the network device, wherein the SDT configuration information includes random access RA configuration information for SDT;

[0700] The processing unit is used to perform the RA-SDT process for small data transmission based on random access according to the SDT configuration information;

[0701] A sending unit is configured to send second information related to RA-SDT to the network device, wherein the second information is used to optimize RA-SDT-related configuration information;

[0702] The second information includes one or more of the following:

[0703] Information related to the reasons for the failure of the RA-SDT process;

[0704] RA-SDT related information prior to random access RA access networks that are not SDT;

[0705] The shared random access channel timing (RO) related information of the RA-SDT process.

[0706] It should be noted that the terminal provided in this embodiment of the invention can implement all the method steps implemented in the method embodiment applied to the terminal, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0707] Specifically, embodiments of the present invention also provide a terminal, including:

[0708] The receiving unit is used to receive random access (RA) configuration information sent by the network device;

[0709] The processing unit is used to perform the RA process according to the RA configuration information;

[0710] The sending unit is used to send third information related to the shared random access channel (RO) of the RA to the network device, wherein the third information is used to optimize the configuration information related to the shared RO of the RA.

[0711] It should be noted that the terminal provided in this embodiment of the invention can implement all the method steps implemented in the method embodiment applied to the terminal, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0712] Specifically, such as Figure 14 As shown, an embodiment of the present invention provides a network device 1400, comprising:

[0713] The first sending unit 1410 is used to send small data transmission SDT configuration information to the terminal, the SDT configuration information including configuration authorization CG configuration information for SDT;

[0714] The first receiving unit 1420 is used to receive first information related to CG-SDT based small data transmission based on configuration authorization sent by the terminal. The first information is obtained by the terminal in the CG-SDT process according to the CG configuration information.

[0715] The first processing unit 1430 is configured to optimize the CG-SDT-related configuration information based on the first information.

[0716] The first information includes one or more of the following:

[0717] CG resource-related information in the CG-SDT process;

[0718] Information related to the reasons for the failure of the CG-SDT process;

[0719] CG-SDT related information prior to random access (RA) to a non-SDT network.

[0720] Optionally, the SDT configuration information further includes RA configuration information for SDT, and the network device 1400 further includes:

[0721] The second receiving unit is used to receive second information related to RA-SDT for small data transmission based on random access sent by the terminal. The second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information.

[0722] The second processing unit is used to optimize the RA-SDT-related configuration information based on the second information;

[0723] The second information includes one or more of the following:

[0724] Information related to the reasons for the failure of the RA-SDT process;

[0725] RA-SDT related information prior to random access RA access networks that are not SDT;

[0726] The shared random access channel timing (RO) related information of the RA-SDT process.

[0727] Optionally, the network device 1400 further includes:

[0728] The second sending unit is used to send RA configuration information to the terminal;

[0729] The third receiving unit is used to receive third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal in the RA process according to the RA configuration information;

[0730] The third processing unit is used to optimize the configuration information related to RA sharing RO based on the third information.

[0731] It should be noted that the network device provided in this embodiment of the invention can implement all the method steps implemented in the method embodiment applied to the network device, 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.

[0732] Specifically, embodiments of the present invention also provide a network device, including:

[0733] The sending unit is used to send small data transmission SDT configuration information to the terminal, wherein the SDT configuration information includes random access RA configuration information for SDT;

[0734] The receiving unit is configured to receive second information related to RA-SDT for small data transmission based on random access sent by the terminal, wherein the second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information;

[0735] The processing unit is configured to optimize the RA-SDT-related configuration information based on the second information.

[0736] The second information includes one or more of the following:

[0737] Information related to the reasons for the failure of the RA-SDT process;

[0738] RA-SDT related information prior to random access RA access networks that are not SDT;

[0739] The shared random access channel timing (RO) related information of the RA-SDT process.

[0740] It should be noted that the network device provided in this embodiment of the invention can implement all the method steps implemented in the method embodiment applied to the network device, 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.

[0741] Specifically, embodiments of the present invention also provide a network device, including:

[0742] The sending unit is used to send random access (RA) configuration information to the terminal.

[0743] A receiving unit is configured to receive third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal during the RA process based on the RA configuration information;

[0744] The processing unit is used to optimize the configuration information related to RA sharing RO based on the third information.

[0745] It should be noted that the network device provided in this embodiment of the invention can implement all the method steps implemented in the method embodiment applied to the network device, 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.

[0746] It should be noted that the division of units in the embodiments of this application 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 application 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.

[0747] 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 application, in essence, or the part that contributes to the prior art, 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 application. 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.

[0748] It should be noted that the apparatus provided in this embodiment of the invention 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.

[0749] To better achieve the above objectives, embodiments of the present invention also provide a terminal, such as... Figure 15As shown, it includes a memory 1520, a transceiver 1500, and a processor 1510; wherein, the memory 1520 is used to store computer programs; the transceiver 1500 is used to send and receive data and perform the following operations under the control of the processor 1510:

[0750] Receive small data transmission SDT configuration information sent by network devices, wherein the SDT configuration information includes configuration authorization CG configuration information for SDT;

[0751] The processor 1510 is used to read the computer program in the memory and perform the following operations:

[0752] Based on the CG configuration information, a small data transfer CG-SDT process based on configuration authorization is performed;

[0753] The transceiver 1500 is further configured to: send first information related to CG-SDT to the network device, wherein the first information is used to optimize CG-SDT-related configuration information;

[0754] The first information includes one or more of the following:

[0755] CG resource-related information in the CG-SDT process;

[0756] Information related to the reasons for the failure of the CG-SDT process;

[0757] CG-SDT related information prior to random access (RA) to a non-SDT network.

[0758] Optionally, the CG resource-related information of the CG-SDT process includes at least one or more of the following:

[0759] The terminal identification information of the terminal;

[0760] Cell information corresponding to the CG resources in the CG-SDT process;

[0761] Information about the CG resource group corresponding to the CG resources in the CG-SDT process;

[0762] Beam information corresponding to CG resources in the CG-SDT process;

[0763] The terminal's status information during the CG-SDT process;

[0764] The status information corresponds to the CG resource allocation information;

[0765] The measurement threshold information corresponding to the CG resources in the CG configuration information;

[0766] The threshold value information for the payload size in the CG configuration information;

[0767] The terminal's CG-based temporary wireless network identifier (RNTI) information when inactive.

[0768] Optionally, in the case that the CG-SDT process is a failed CG-SDT process, the CG resource-related information further includes:

[0769] This is the first indication information used to indicate that the CG-SDT timer has expired and no CG-SDT transmission feedback has been received.

[0770] Optionally, information related to the cause of failure in the CG-SDT process includes at least one or more of the following:

[0771] Second indication information used to indicate the cause of failure in the CG-SDT process;

[0772] The first measurement-related information of the terminal transitioning from an inactive state to an idle state.

[0773] Optionally, the second indication information is at least one or more of the following:

[0774] Indication information used to indicate that the CG-SDT process has failed due to cell reselection;

[0775] Indication information used to indicate that the CG-SDT process has failed due to the expiration of the CG-SDT timer;

[0776] Indication information used to indicate that the CG-SDT process has failed because the Radio Link Control (RLC) has reached the maximum number of retransmissions.

[0777] Optionally, the first measurement-related information includes at least one or more of the following:

[0778] When the terminal transitions from an inactive state to an idle state, the cell information of the serving cell corresponding to CG-SDT is obtained.

[0779] The measurement results of the serving cell corresponding to CG-SDT when the terminal transitions from an inactive state to an idle state;

[0780] The measurement results of neighboring cells when the terminal changes from an inactive state to an idle state;

[0781] After the terminal transitions from an inactive state to an idle state, the cell information of the target cell is obtained.

[0782] The measurement results of the target cell after the terminal changes from an inactive state to an idle state;

[0783] The maximum number of retransmissions that cause the CG-SDT process to fail is reached when the RLC reaches its maximum retransmission count.

[0784] Optionally, SDT-related information prior to the RA access network (excluding SDT) includes at least one or more of the following:

[0785] Third indication information used to indicate whether CG-SDT or not has been experienced before RA access network is not subject to SDT;

[0786] Fourth indication information used to indicate the type of SDT related to CG-SDT experienced by the terminal when a non-SDT RA process is triggered.

[0787] Optionally, the fourth indication information is at least one or more of the following:

[0788] Indication information used to indicate that the terminal has failed to undergo the CG-SDT process, triggering the non-SDT RA process;

[0789] Indication information used to indicate that the terminal has failed to undergo the process of converting from CG-SDT to the first type of RA-SDT, triggering the non-SDT RA process;

[0790] Indication information used to indicate that the terminal fails to undergo the process of converting from CG-SDT to the first type of RA-SDT, and the process of converting from the first type of RA-SDT to the second type of RA-SDT, triggering the non-SDT RA process.

[0791] Optionally, the SDT configuration information also includes RA configuration information for the SDT, and the processor 1510 is used to read the computer program in the memory and perform the following operations:

[0792] Based on the SDT configuration information, perform the RA-SDT process for small data transmission based on random access;

[0793] The transceiver 1500 is further configured to: send the second information related to RA-SDT to the network device, the second information being used to optimize the configuration information related to RA-SDT;

[0794] The second information includes one or more of the following:

[0795] Information related to the reasons for the failure of the RA-SDT process;

[0796] RA-SDT related information prior to random access RA access networks that are not SDT;

[0797] The shared random access channel timing (RO) related information of the RA-SDT process.

[0798] Optionally, information related to the cause of failure in the RA-SDT process includes:

[0799] The fifth indication information used to indicate the cause of failure in the RA-SDT process;

[0800] The second measurement-related information is used to transition the terminal from an inactive state to an idle state.

[0801] Optionally, the fifth indication information is at least one or more of the following:

[0802] Indication information used to indicate that the RA-SDT process has failed due to cell reselection;

[0803] Indication information used to indicate that the RA-SDT process has failed due to the expiration of the RA-SDT timer;

[0804] Indication information used to indicate that the RA-SDT process fails because the RLC reaches the maximum number of retransmissions.

[0805] Optionally, the second measurement-related information includes at least one or more of the following:

[0806] When the terminal transitions from an inactive state to an idle state, the cell information of the serving cell corresponding to RA-SDT is obtained.

[0807] The measurement results of the serving cell corresponding to RA-SDT when the terminal transitions from an inactive state to an idle state;

[0808] The measurement results of neighboring cells when the terminal changes from an inactive state to an idle state;

[0809] After the terminal transitions from an inactive state to an idle state, the cell information of the target cell is obtained.

[0810] The measurement results of the target cell after the terminal changes from an inactive state to an idle state;

[0811] The maximum number of retransmissions that cause the RA-SDT process to fail is reached when the RLC reaches its maximum retransmission count.

[0812] Optionally, the RA-SDT related information prior to the non-SDT random access RA access network includes at least one or more of the following:

[0813] The sixth indication information is used to indicate whether RA-SDT has been experienced or not before a non-SDT RA access network;

[0814] The seventh indication information is used to indicate the RA-SDT related SDT type experienced by the terminal when a non-SDT RA procedure is triggered.

[0815] Optionally, the seventh indication information is at least one or more of the following:

[0816] Indication information used to indicate that the terminal has failed to undergo the first type of RA-SDT process, triggering the non-SDT RA process;

[0817] Indication information used to indicate that the terminal has failed to undergo the second type of RA-SDT process, triggering the non-SDT RA process;

[0818] Indication information used to indicate that the terminal has failed to transition from a first type of RA-SDT to a second type of RA-SDT, triggering the non-SDT RA process;

[0819] Indication information used to indicate that the terminal has failed to undergo the process of converting from CG-SDT to the first type of RA-SDT, triggering the non-SDT RA process;

[0820] Indication information used to indicate that the terminal fails to undergo the process of converting from CG-SDT to the first type of RA-SDT, and the process of converting from the first type of RA-SDT to the second type of RA-SDT, triggering the non-SDT RA process.

[0821] Optionally, the shared random access channel timing (RO) related information of the RA-SDT process includes at least one or more of the following:

[0822] The eighth indication information used to indicate that the first type of RA-SDT process and the second type of RA-SDT process share the RO;

[0823] When the first type of RA-SDT procedure and the second type of RA-SDT procedure share the RO, the number of contention-based random access preambles for the first type of RA-SDT on each SSB;

[0824] For each SSB, the first type of RA-SDT process shares a subset of RO information in the RA resources of the second type of RA-SDT process;

[0825] Ninth indication information used to indicate whether the first type of RA-SDT process uses or does not use the shared RO resource.

[0826] Optionally, the transceiver 1500 is further configured to: receive RA configuration information sent by the network device;

[0827] The processor 1510 is used to read the computer program in the memory and perform the following operations:

[0828] The RA process is performed based on the RA configuration information.

[0829] The transceiver 1500 is further configured to: send third information related to the shared RO of the RA to the network device, the third information being used to optimize the configuration information related to the shared RO of the RA.

[0830] Optionally, the third information includes one or more of the following:

[0831] The tenth instruction information used to indicate that the first type of RA process and the second type of RA process share the RO;

[0832] When the first type of RA procedure and the second type of RA procedure share the RO, the number of contention-based random access preambles on each SSB for the first type of RA;

[0833] For each SSB, the first type of RA process shares a subset of RO information in the RA resources of the second type of RA process;

[0834] Eleventh indication information used to indicate whether the first type of RA process uses or does not use the shared RO resource.

[0835] It should be noted that, in Figure 15 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (processor 1510) and memory (memory 1520). The bus architecture can 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. The transceiver 1500 can be multiple elements, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium. For different terminals, the user interface 1530 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc. The processor 1510 is responsible for managing the bus architecture and general processing, and the memory 1520 can store data used by the processor 1510 during operation.

[0836] Optionally, the processor 1510 can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0837] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0838] It should be noted that the terminal provided in this embodiment of the invention can implement all the method steps implemented in the method embodiment applied to the terminal, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0839] To better achieve the above objectives, embodiments of the present invention also provide a terminal, including a memory, a transceiver, and a processor; wherein the memory is used to store computer programs; and the transceiver is used to send and receive data and perform the following operations under the control of the processor:

[0840] Receive small data transmission SDT configuration information sent by network devices, wherein the SDT configuration information includes random access RA configuration information for SDT;

[0841] The processor is used to read the computer program in the memory and perform the following operations:

[0842] Based on the SDT configuration information, perform the RA-SDT process for small data transmission based on random access;

[0843] The transceiver is further configured to: send second information related to RA-SDT to the network device, the second information being used to optimize RA-SDT-related configuration information;

[0844] The second information includes one or more of the following:

[0845] Information related to the reasons for the failure of the RA-SDT process;

[0846] RA-SDT related information prior to random access RA access networks that are not SDT;

[0847] The shared random access channel timing (RO) related information of the RA-SDT process.

[0848] It should be noted that the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors (represented by the processor) and memory (represented by the memory). The bus architecture can 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 the interface. A transceiver can be multiple components, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium. For different terminals, the user interface can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc. The processor is responsible for managing the bus architecture and general processing, and the memory can store the data used by the processor during operation.

[0849] Optionally, the processor can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0850] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0851] It should be noted that the terminal provided in this embodiment of the invention can implement all the method steps implemented in the method embodiment applied to the terminal, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0852] To better achieve the above objectives, embodiments of the present invention also provide a terminal, including a memory, a transceiver, and a processor; wherein the memory is used to store computer programs; and the transceiver is used to send and receive data and perform the following operations under the control of the processor:

[0853] Receive random access (RA) configuration information sent by network devices;

[0854] The processor is used to: perform the RA process according to the RA configuration information;

[0855] The transceiver is also used to: send third information related to the shared random access channel (RO) of the RA to the network device, wherein the third information is used to optimize the configuration information related to the shared RO of the RA.

[0856] It should be noted that the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors (represented by the processor) and memory (represented by the memory). The bus architecture can 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 the interface. A transceiver can be multiple components, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium. For different terminals, the user interface can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc. The processor is responsible for managing the bus architecture and general processing, and the memory can store the data used by the processor during operation.

[0857] Optionally, the processor can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0858] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0859] It should be noted that the terminal provided in this embodiment of the invention can implement all the method steps implemented in the method embodiment applied to the terminal, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0860] To better achieve the above objectives, embodiments of the present invention also provide a network device, such as... Figure 16 As shown, it includes a memory 1620, a transceiver 1600, and a processor 1610; wherein, the memory 1620 is used to store computer programs; the transceiver 1600 is used to send and receive data and perform the following operations under the control of the processor 1610:

[0861] Send small data transmission SDT configuration information to the terminal, the SDT configuration information including configuration authorization CG configuration information for SDT;

[0862] The network device receives first information related to CG-SDT for small data transmission based on configuration authorization sent by the terminal. The first information is obtained by the terminal during the CG-SDT process according to the CG configuration information.

[0863] The processor 1610 is configured to read the computer program in the memory and perform the following operations:

[0864] Based on the first information, optimize the configuration information related to CG-SDT.

[0865] The first information includes one or more of the following:

[0866] CG resource-related information in the CG-SDT process;

[0867] Information related to the reasons for the failure of the CG-SDT process;

[0868] CG-SDT related information prior to random access (RA) to a non-SDT network.

[0869] Optionally, the SDT configuration information further includes RA configuration information for SDT, and the transceiver is further used for:

[0870] The terminal receives second information related to RA-SDT for small data transmission based on random access, wherein the second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information;

[0871] The processor 1610 is configured to read the computer program in the memory and perform the following operations:

[0872] Based on the second information, optimize the configuration information related to RA-SDT;

[0873] The second information includes one or more of the following:

[0874] Information related to the reasons for the failure of the RA-SDT process;

[0875] RA-SDT related information prior to random access RA access networks that are not SDT;

[0876] The shared random access channel timing (RO) related information of the RA-SDT process.

[0877] Optionally, the transceiver is further used for:

[0878] Send RA configuration information to the terminal;

[0879] The terminal receives third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal during the RA process based on the RA configuration information;

[0880] The processor 1610 is used to read the computer program in the memory and perform the following operations:

[0881] Based on the third piece of information, optimize the configuration information related to RA sharing RO.

[0882] Among them, Figure 16 In this context, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (processor 1610) and memory (memory 1620). The bus architecture may also link together 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. The transceiver 1600 may be multiple elements, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium. The processor 1610 is responsible for managing the bus architecture and general processing, and the memory 1620 may store data used by the processor 1610 during operation.

[0883] The processor 1610 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.

[0884] It should be noted that the network-side device provided in this embodiment of the invention can implement all the method steps implemented in the method embodiment applied to the network-side device, 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.

[0885] To better achieve the above objectives, embodiments of the present invention also provide a network device, including a memory, a transceiver, and a processor; wherein the memory is used to store computer programs; and the transceiver is used to send and receive data and perform the following operations under the control of the processor:

[0886] Send small data transmission SDT configuration information to the terminal, the SDT configuration information including random access RA configuration information for SDT;

[0887] The terminal receives second information related to RA-SDT for small data transmission based on random access, wherein the second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information;

[0888] The processor is used to read the computer program in the memory and perform the following operations:

[0889] Based on the second information, optimize the configuration information related to RA-SDT;

[0890] The second information includes one or more of the following:

[0891] Information related to the reasons for the failure of the RA-SDT process;

[0892] RA-SDT related information prior to random access RA access networks that are not SDT;

[0893] The shared random access channel timing (RO) related information of the RA-SDT process.

[0894] The bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits represented by one or more processors (represented by processors) and memories (represented by memory). The bus architecture can also link various other circuits such as peripherals, 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 the interface. A transceiver can be multiple components, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium. The processor is responsible for managing the bus architecture and general processing, and the memory can store data used by the processor during operation.

[0895] The processor 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.

[0896] It should be noted that the network-side device provided in this embodiment of the invention can implement all the method steps implemented in the method embodiment applied to the network-side device, 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.

[0897] To better achieve the above objectives, embodiments of the present invention also provide a network device, including a memory, a transceiver, and a processor; wherein the memory is used to store computer programs; and the transceiver is used to send and receive data and perform the following operations under the control of the processor:

[0898] Send random access RA configuration information to the terminal;

[0899] The terminal receives third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal during the RA process based on the RA configuration information;

[0900] The processor is used to read the computer program in the memory and perform the following operations:

[0901] Based on the third piece of information, optimize the configuration information related to RA sharing RO.

[0902] The bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits represented by one or more processors (represented by processors) and memories (represented by memory). The bus architecture can also link various other circuits such as peripherals, 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 the interface. A transceiver can be multiple components, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium. The processor is responsible for managing the bus architecture and general processing, and the memory can store data used by the processor during operation.

[0903] The processor 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.

[0904] It should be noted that the network-side device provided in this embodiment of the invention can implement all the method steps implemented in the method embodiment applied to the network-side device, 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.

[0905] This invention also provides a processor-readable storage medium storing a computer program for causing the processor to execute the aforementioned information transmission method or configuration optimization method.

[0906] The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), and semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0907] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0908] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. 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, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0909] These processor-executable instructions may also be stored in a processor-readable memory that can direct 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, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0910] These processors can execute instructions that can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0911] Furthermore, it should be noted that in the apparatus and method of the present invention, 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 the present invention. Moreover, the steps performing the above-described 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 the present invention 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. This is something that those skilled in the art can achieve by using their basic programming skills after reading the description of the present invention.

[0912] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An information transmission method, characterized in that, include: The terminal receives small data transmission SDT configuration information sent by the network device, the SDT configuration information including configuration authorization CG configuration information for SDT; The terminal performs a small data transmission CG-SDT process based on configuration authorization according to the CG configuration information; The terminal sends first information related to CG-SDT to the network device, the first information being used to optimize CG-SDT-related configuration information; The first information includes: Information related to the reasons for the failure of the CG-SDT process; The relevant information regarding the cause of the failure of the CG-SDT process includes second indication information for indicating the cause of the failure of the CG-SDT process. The second indication information is used to indicate that the failure of the CG-SDT process is due to cell reselection.

2. The information transmission method according to claim 1, characterized in that, The first information also includes one or more of the following: CG resource-related information in the CG-SDT process; CG-SDT related information prior to random access (RA) to a non-SDT network.

3. The information transmission method according to claim 2, characterized in that, The CG resource-related information in the CG-SDT process includes at least one or more of the following: The terminal identification information of the terminal; Cell information corresponding to the CG resources in the CG-SDT process; Information about the CG resource group corresponding to the CG resources in the CG-SDT process; Beam information corresponding to CG resources in the CG-SDT process; The terminal's status information during the CG-SDT process; The status information corresponds to the CG resource allocation information; The measurement threshold information corresponding to the CG resources in the CG configuration information; The threshold value information for the payload size in the CG configuration information; The terminal's CG-based temporary wireless network identifier (RNTI) information when inactive.

4. The information transmission method according to claim 3, characterized in that, In the case of a failed CG-SDT process, the CG resource-related information also includes: This is the first indication information used to indicate that the CG-SDT timer has expired and no CG-SDT transmission feedback has been received.

5. The information transmission method according to claim 1, characterized in that, The second instruction information is also used to indicate at least one or more of the following: Indication information used to indicate that the CG-SDT process has failed due to the expiration of the CG-SDT timer; Indication information used to indicate that the CG-SDT process has failed because the Radio Link Control (RLC) has reached the maximum number of retransmissions.

6. The information transmission method according to claim 1, characterized in that, The information related to the reasons for the failure of the CG-SDT process also includes: The first measurement-related information of the terminal transitioning from an inactive state to an idle state.

7. The information transmission method according to claim 6, characterized in that, The first measurement-related information includes at least one or more of the following: When the terminal transitions from an inactive state to an idle state, the cell information of the serving cell corresponding to CG-SDT is obtained. The measurement results of the serving cell corresponding to CG-SDT when the terminal transitions from an inactive state to an idle state; The measurement results of neighboring cells when the terminal changes from an inactive state to an idle state; After the terminal transitions from an inactive state to an idle state, the cell information of the target cell is obtained. The measurement results of the target cell after the terminal changes from an inactive state to an idle state; The maximum number of retransmissions that cause the CG-SDT process to fail is reached when the RLC reaches its maximum retransmission count.

8. The information transmission method according to claim 2, characterized in that, SDT-related information prior to the RA access network (excluding SDT), including at least one or more of the following: Third indication information used to indicate whether CG-SDT or not has been experienced before RA access network is not subject to SDT; Fourth indication information used to indicate the type of SDT related to CG-SDT experienced by the terminal when a non-SDT RA process is triggered.

9. The information transmission method according to claim 8, characterized in that, The fourth indication information is at least one or more of the following: Indication information used to indicate that the terminal has failed to undergo the CG-SDT process, triggering the non-SDT RA process; Indication information used to indicate that the terminal has failed to undergo the process of converting from CG-SDT to the first type of RA-SDT, triggering the non-SDT RA process; Indication information used to indicate that the terminal fails to undergo the process of converting from CG-SDT to the first type of RA-SDT, and the process of converting from the first type of RA-SDT to the second type of RA-SDT, triggering the non-SDT RA process.

10. The information transmission method according to claim 1, characterized in that, The SDT configuration information also includes RA configuration information for SDT, and the method further includes: The terminal performs a small data transmission RA-SDT process based on random access according to the SDT configuration information; The terminal sends the second information related to RA-SDT to the network device, and the second information is used to optimize the configuration information related to RA-SDT. The second information includes: Information related to the reasons for the failure of the RA-SDT process.

11. The information transmission method according to claim 10, characterized in that, The second information includes one or more of the following: RA-SDT related information prior to random access RA access networks that are not SDT; The shared random access channel timing (RO) related information of the RA-SDT process.

12. The information transmission method according to claim 10, characterized in that, Information related to the reasons for the failure of the RA-SDT process includes: The fifth indication information used to indicate the cause of failure in the RA-SDT process; The second measurement-related information of the terminal transitioning from an inactive state to an idle state; The fifth indication information includes at least one or more of the following: Indication information used to indicate that the RA-SDT process has failed due to cell reselection; Indication information used to indicate that the RA-SDT process has failed due to the expiration of the RA-SDT timer; Indication information used to indicate that the RA-SDT process fails because the RLC reaches the maximum number of retransmissions.

13. The information transmission method according to claim 12, characterized in that, The second measurement-related information includes at least one or more of the following: When the terminal transitions from an inactive state to an idle state, the cell information of the serving cell corresponding to RA-SDT is obtained. The measurement results of the serving cell corresponding to RA-SDT when the terminal transitions from an inactive state to an idle state; The measurement results of neighboring cells when the terminal changes from an inactive state to an idle state; After the terminal transitions from an inactive state to an idle state, the cell information of the target cell is obtained. The measurement results of the target cell after the terminal changes from an inactive state to an idle state; The maximum number of retransmissions that cause the RA-SDT process to fail is reached when the RLC reaches its maximum retransmission count.

14. The information transmission method according to claim 11, characterized in that, The RA-SDT related information prior to the non-SDT random access RA access network includes at least one or more of the following: The sixth indication information is used to indicate whether RA-SDT has been experienced or not before a non-SDT RA access network; The seventh indication information is used to indicate the RA-SDT related SDT type experienced by the terminal when a non-SDT RA procedure is triggered.

15. The information transmission method according to claim 14, characterized in that, The seventh instruction information is at least one or more of the following: Indication information used to indicate that the terminal has failed to undergo the first type of RA-SDT process, triggering the non-SDT RA process; Indication information used to indicate that the terminal has failed to undergo the second type of RA-SDT process, triggering the non-SDT RA process; Indication information used to indicate that the terminal has failed to transition from a first type of RA-SDT to a second type of RA-SDT, triggering the non-SDT RA process; Indication information used to indicate that the terminal has failed to undergo the process of converting from CG-SDT to the first type of RA-SDT, triggering the non-SDT RA process; Indication information used to indicate that the terminal fails to undergo the process of converting from CG-SDT to the first type of RA-SDT, and the process of converting from the first type of RA-SDT to the second type of RA-SDT, triggering the non-SDT RA process.

16. The information transmission method according to claim 11, characterized in that, The shared random access channel (RO) timing-related information of the RA-SDT process includes at least one or more of the following: The eighth indication information used to indicate that the first type of RA-SDT process and the second type of RA-SDT process share the RO; When the first type of RA-SDT procedure and the second type of RA-SDT procedure share the RO, the number of contention-based random access preambles for the first type of RA-SDT on each synchronization signal block SSB; For each SSB, the first type of RA-SDT process shares a subset of RO information in the RA resources of the second type of RA-SDT process; Ninth indication information used to indicate whether the first type of RA-SDT process uses or does not use the shared RO resource.

17. The information transmission method according to claim 1, characterized in that, The method further includes: The terminal receives RA configuration information sent by the network device; The terminal performs the RA process according to the RA configuration information; The terminal sends third information related to the shared RO of the RA to the network device. The third information is used to optimize the configuration information related to the shared RO of the RA.

18. The information transmission method according to claim 17, characterized in that, The third information includes one or more of the following: The tenth instruction information used to indicate that the first type of RA process and the second type of RA process share the RO; When the first type of RA procedure and the second type of RA procedure share the RO, the number of contention-based random access preambles on each SSB for the first type of RA; For each SSB, the first type of RA process shares a subset of RO information in the RA resources of the second type of RA process; Eleventh indication information used to indicate whether the first type of RA process uses or does not use the shared RO resource.

19. A configuration optimization method, characterized in that, include: The network device sends small data transmission SDT configuration information to the terminal, the SDT configuration information including configuration authorization CG configuration information for SDT; The network device receives first information related to CG-SDT for small data transmission based on configuration authorization sent by the terminal. The first information is obtained by the terminal during the CG-SDT process according to the CG configuration information. Based on the first information, the network device optimizes the CG-SDT-related configuration information. The first information includes: Information related to the reasons for the failure of the CG-SDT process; The relevant information regarding the cause of the failure of the CG-SDT process includes second indication information for indicating the cause of the failure of the CG-SDT process. The second indication information is used to indicate that the failure of the CG-SDT process is due to cell reselection.

20. The configuration optimization method according to claim 19, characterized in that, The first information also includes one or more of the following: CG resource-related information in the CG-SDT process; CG-SDT related information prior to random access (RA) to a non-SDT network.

21. The configuration optimization method according to claim 19, characterized in that, The SDT configuration information also includes RA configuration information for SDT, and the method further includes: The network device receives second information related to RA-SDT for small data transmission based on random access sent by the terminal. The second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information. The network device optimizes the RA-SDT-related configuration information based on the second information; The second information includes: Information related to the reasons for the failure of the RA-SDT process.

22. The configuration optimization method according to claim 21, characterized in that, The second information includes one or more of the following: RA-SDT related information prior to random access RA access networks that are not SDT; The shared random access channel timing (RO) related information of the RA-SDT process.

23. The configuration optimization method according to claim 19, characterized in that, Also includes: The network device sends RA configuration information to the terminal; The network device receives third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal during the RA process based on the RA configuration information; The network device optimizes the configuration information related to RA sharing RO based on the third information.

24. An information transmission device, characterized in that, Includes memory, transceiver, and processor; The memory stores computer programs; the transceiver, under the control of the processor, sends and receives data; the processor reads the computer programs from the memory and performs the following operations: Receive small data transmission SDT configuration information sent by network devices, wherein the SDT configuration information includes configuration authorization CG configuration information for SDT; Based on the CG configuration information, a small data transfer CG-SDT process based on configuration authorization is performed; Send the first information related to CG-SDT to the network device, wherein the first information is used to optimize the configuration information related to CG-SDT; The first information includes: Information related to the reasons for the failure of the CG-SDT process; The relevant information regarding the cause of the failure of the CG-SDT process includes second indication information for indicating the cause of the failure of the CG-SDT process. The second indication information is used to indicate that the failure of the CG-SDT process is due to cell reselection.

25. The information transmission device according to claim 24, characterized in that, The first information also includes one or more of the following: CG resource-related information in the CG-SDT process; CG-SDT related information prior to random access (RA) to a non-SDT network.

26. The information transmission device according to claim 24, characterized in that, The SDT configuration information also includes RA configuration information for SDT, and the processor is used to read the computer program in the memory and perform the following operations: Based on the SDT configuration information, perform the RA-SDT process for small data transmission based on random access; Send the second information related to RA-SDT to the network device, the second information being used to optimize the configuration information related to RA-SDT; The second information includes: Information related to the reasons for the failure of the RA-SDT process.

27. The information transmission device according to claim 26, characterized in that, The second information includes one or more of the following: RA-SDT related information prior to random access RA access networks that are not SDT; The shared random access channel timing (RO) related information of the RA-SDT process.

28. The information transmission device according to claim 24, characterized in that, The processor is used to read the computer program in the memory and perform the following operations: Receive RA configuration information sent by the network device; The RA process is performed based on the RA configuration information. Send third information related to the shared RO of the RA to the network device. The third information is used to optimize the configuration information related to the shared RO of the RA.

29. A terminal, characterized in that, include: The first receiving unit is used to receive small data transmission SDT configuration information sent by the network device, wherein the SDT configuration information includes configuration authorization CG configuration information for SDT; The first processing unit is used to perform a small data transmission CG-SDT process based on configuration authorization according to the CG configuration information; The first sending unit is configured to send first information related to CG-SDT to the network device, wherein the first information is used to optimize CG-SDT-related configuration information. The first information includes: Information related to the reasons for the failure of the CG-SDT process; The relevant information regarding the cause of the failure of the CG-SDT process includes second indication information for indicating the cause of the failure of the CG-SDT process. The second indication information is used to indicate that the failure of the CG-SDT process is due to cell reselection.

30. The terminal according to claim 29, characterized in that, The first information also includes one or more of the following: CG resource-related information in the CG-SDT process; CG-SDT related information prior to random access (RA) to a non-SDT network.

31. A configuration optimization device, characterized in that, Includes memory, transceiver, and processor; The memory stores computer programs; the transceiver, under the control of the processor, sends and receives data; the processor reads the computer programs from the memory and performs the following operations: Send small data transmission SDT configuration information to the terminal, the SDT configuration information including configuration authorization CG configuration information for SDT; The terminal receives first information related to CG-SDT for small data transmission based on configuration authorization, wherein the first information is obtained by the terminal during the CG-SDT process according to the CG configuration information; Based on the first information, optimize the configuration information related to CG-SDT. The first information includes: Information related to the reasons for the failure of the CG-SDT process; The relevant information regarding the cause of the failure of the CG-SDT process includes second indication information for indicating the cause of the failure of the CG-SDT process. The second indication information is used to indicate that the failure of the CG-SDT process is due to cell reselection.

32. The configuration optimization device according to claim 31, characterized in that, The first information also includes one or more of the following: CG resource-related information in the CG-SDT process; CG-SDT related information prior to random access (RA) to a non-SDT network.

33. The configuration optimization device according to claim 31, characterized in that, The processor is used to read the computer program in the memory and perform the following operations: The terminal receives second information related to RA-SDT for small data transmission based on random access, wherein the second information is obtained by the terminal during the RA-SDT process according to the SDT configuration information; Based on the second information, optimize the configuration information related to RA-SDT; The second information includes: Information related to the reasons for the failure of the RA-SDT process.

34. The configuration optimization device according to claim 33, characterized in that, The second information includes one or more of the following: RA-SDT related information prior to random access RA access networks that are not SDT; The shared random access channel timing (RO) related information of the RA-SDT process.

35. The configuration optimization device according to claim 31, characterized in that, The processor is used to read the computer program in the memory and perform the following operations: Send RA configuration information to the terminal; The terminal receives third information related to the shared RO of the RA sent by the terminal, wherein the third information is obtained by the terminal during the RA process based on the RA configuration information; Based on the third piece of information, optimize the configuration information related to RA sharing RO.

36. A network device, characterized in that, include: The first sending unit is used to send small data transmission SDT configuration information to the terminal, the SDT configuration information including configuration authorization CG configuration information for SDT; The first receiving unit is configured to receive first information related to CG-SDT for small data transmission based on configuration authorization sent by the terminal, wherein the first information is obtained by the terminal during the CG-SDT process according to the CG configuration information; The first processing unit is configured to optimize the CG-SDT-related configuration information based on the first information. The first information includes: Information related to the reasons for the failure of the CG-SDT process; The relevant information regarding the cause of the failure of the CG-SDT process includes second indication information for indicating the cause of the failure of the CG-SDT process. The second indication information is used to indicate that the failure of the CG-SDT process is due to cell reselection.

37. The network device according to claim 36, characterized in that, The first information also includes one or more of the following: CG resource-related information in the CG-SDT process; CG-SDT related information prior to random access (RA) to a non-SDT network.

38. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a computer program that causes the processor to perform the steps of the information transmission method according to any one of claims 1 to 18, or the computer program that causes the processor to perform the steps of the configuration optimization method according to any one of claims 19 to 23.

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