A resource allocation method, a terminal, and a network side device for small data transmission

Abstract

The present invention discloses a resource allocation method, a terminal, and a network-side device for small data transmission, which are used to solve the PDCCH resource scheduling blocking problem between a small data terminal and a general terminal caused by the small data terminal occupying Type 1-PDCCH resources for a long time, and the PDCCH resource scheduling blocking problem between broadcast information and on-demand information. The method includes: before entering the connected state, the terminal determines resource configuration information of a dedicated search space for transmitting small data, where the small data is used to represent data with a data volume smaller than a threshold; the terminal determines physical downlink control channel PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and particularly to a resource allocation method, a terminal, and a network side device for small data transmission. Background Art

[0002] Since small data UEs (Small data User Equipments) hope to continuously transmit uplink data during the initial access phase (i.e., before entering the connected state), and in the prior art, the base station can only use Type1-PDCCH (Physical Downlink Control Channel) CSS (Common Search Space) to schedule small data transmission. Therefore, if a large number of Small data UEs have small data transmission requirements for a long time, they will occupy the Type1-PDCCH CSS resources for a long time, resulting in a large load in the Type1-PDCCH CSS, and there will be PDCCH scheduling blocking problems between UEs (i.e., between normal UEs or small data UEs) and PDCCH scheduling blocking problems between broadcast information and unicast information. Summary of the Invention

[0003] The present invention provides a resource allocation method, a terminal, and a network side device for small data transmission, which are used to solve the PDCCH resource scheduling blocking problems between small data terminals and ordinary terminals and between broadcast information and unicast information caused by small data terminals occupying Type1-PDCCH resources for a long time.

[0004] In a first aspect, a resource allocation method for small data transmission provided by an embodiment of the present invention includes:

[0005] Before entering the connected state, a terminal determines resource configuration information of a dedicated search space for transmitting small data, where the small data is used to represent data with a data volume less than a threshold;

[0006] The terminal determines physical downlink control channel PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space.

[0007] In the embodiment of the present invention, small data is transmitted through PDCCH resources in a dedicated search space. The dedicated search space in this embodiment is different from the common search space. That is, in the embodiment of the present invention, when a small data terminal continuously sends data, it does not need to occupy the PDCCH resources in the common search space, which can avoid the scheduling blocking problem of PDCCH resources between UEs and the scheduling blocking problem of PDCCH resources between broadcast information and on-demand information to a certain extent.

[0008] As an alternative embodiment, the terminal determines the resource configuration information of the dedicated search space for transmitting small data, including:

[0009] The terminal determines the resource configuration information of the dedicated search space for transmitting small data according to the resource configuration information of at least one predefined dedicated search space; and / or,

[0010] The terminal determines the resource configuration information of the dedicated search space for transmitting small data according to the explicit signaling carrying the resource configuration information of at least one dedicated search space, and the explicit signaling includes broadcast signaling or dedicated signaling.

[0011] As an alternative embodiment, there are multiple pieces of resource configuration information of the dedicated search space, and each resource configuration information corresponds to a unique resource configuration information number;

[0012] The terminal determines the resource configuration information of the dedicated search space for transmitting small data, including:

[0013] The terminal determines the resource configuration information corresponding to the RO number from the multiple pieces of resource configuration information according to the mapping relationship between the random access occasion RO number selected by sending the random access preamble preamble and the resource configuration information number; or,

[0014] The terminal determines the resource configuration information corresponding to the SSB index value from the multiple pieces of resource configuration information according to the mapping relationship between the received synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number; or,

[0015] The terminal determines the resource configuration information corresponding to the indication information from the multiple pieces of resource configuration information according to the indication information carried in the received contention resolution message Msg4 or MsgB.

[0016] As an alternative embodiment, the resource configuration information includes any one or more of the following:

[0017] The aggregation level AL of the dedicated search space;

[0018] The number of PDCCH candidate sets candidate corresponding to each AL of the dedicated search space;

[0019] The blind detection period parameter of the dedicated search space;

[0020] The control resource set CORESET corresponding to the dedicated search space.

[0021] As an optional implementation manner, the terminal determines the PDCCH resource for transmitting the small data according to the resource configuration information of the dedicated search space, including:

[0022] The terminal determines the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0023] The terminal determines the PDCCH resource within the CORESET according to the radio network temporary identity RNTI of the terminal, the AL of the dedicated search space, and the number of PDCCH candidates corresponding to the AL, where the RNTI includes a temporary cell radio network temporary identity TC-RNTI or a cell radio network temporary identity C-RNTI.

[0024] As an optional implementation manner, the terminal determines the PDCCH resource, including:

[0025] The terminal uses the RNTI as the randomization parameter of the hash function, and determines the PDCCH resource for transmitting the small data within the search space based on the hash function according to the AL and the number of PDCCH candidates corresponding to the AL.

[0026] As an optional implementation manner, after the terminal determines the PDCCH resource for transmitting the small data according to the resource configuration information of the dedicated search space, it further includes:

[0027] The terminal detects and receives the downlink control information DCI of the small data within the dedicated search space, where the cyclic redundancy check CRC of the DCI is scrambled by the C-RNTI of the terminal.

[0028] As an optional implementation manner, after the terminal determines the physical downlink control channel PDCCH resource for transmitting the small data, it further includes:

[0029] After the terminal receives Msg2 or Msg4 or MsgB, it transmits the small data on the determined PDCCH resource; or,

[0030] Before the terminal sends Msg1 or Msg3 or MsgA, it transmits the small data on the determined PDCCH resource.

[0031] As an alternative implementation, after the terminal determines the physical downlink control channel (PDCCH) resources for transmitting the small data, the method further includes:

[0032] After the terminal receives a radio resource control (RRC) release signaling, the terminal stops monitoring the PDCCH resources; or,

[0033] After the terminal receives the resource configuration information of the user-specific search space (USS) and / or the type 3 common search space (CSS), the terminal stops monitoring the PDCCH resources.

[0034] As an alternative implementation, after the terminal determines the PDCCH resources for transmitting the small data before initially entering the connected state, the method further includes:

[0035] Before the terminal next enters the connected state, the terminal transmits the small data according to the PDCCH resources determined before initially entering the connected state.

[0036] As an alternative implementation, after the terminal enters the connected state this time and before the terminal next enters the connected state, the method further includes:

[0037] The terminal transmits the small data according to the resource configuration information determined after the terminal enters the connected state this time; or,

[0038] The terminal transmits the small data according to the received indication signaling, where the indication signaling is used to instruct the terminal to transmit the small data according to the resource configuration information determined after the terminal enters the connected state this time.

[0039] In a second aspect, a resource allocation method for small data transmission provided by an embodiment of the present invention includes:

[0040] Before determining that the terminal enters the connected state, the base station determines the resource configuration information of the dedicated search space for transmitting the small data of the terminal, where the small data is used to represent data with a data volume less than a threshold;

[0041] The base station determines the physical downlink control channel (PDCCH) resources for transmitting the small data according to the resource configuration information of the dedicated search space.

[0042] As an alternative implementation, when the base station determines the resource configuration information of the dedicated search space for transmitting the small data of the terminal, it includes:

[0043] The base station determines the resource configuration information of the dedicated search space for transmitting the small data of the terminal according to the resource configuration information of at least one predefined dedicated search space.

[0044] As an optional implementation manner, there are multiple pieces of resource configuration information for the dedicated search space, and each piece of resource configuration information corresponds to a unique resource configuration information number;

[0045] The base station determines the resource configuration information of the dedicated search space for transmitting the small data of the terminal, including:

[0046] The base station determines, according to the mapping relationship between the received random access opportunity RO number and the resource configuration information number, the resource configuration information corresponding to the RO number from the multiple pieces of resource configuration information; or,

[0047] The base station determines, according to the mapping relationship between the synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number, the resource configuration information corresponding to the SSB index value from the multiple pieces of resource configuration information; or,

[0048] The base station itself determines the resource configuration information from the multiple pieces of resource configuration information.

[0049] As an optional implementation manner, the resource configuration information includes any one or any combination of the following:

[0050] The aggregation level AL of the dedicated search space;

[0051] The number of PDCCH candidate sets candidate corresponding to each AL of the dedicated search space;

[0052] The blind detection period parameter of the dedicated search space;

[0053] The control resource set CORESET corresponding to the dedicated search space.

[0054] As an optional implementation manner, the base station determines the PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space, including:

[0055] The base station determines the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0056] The base station determines the PDCCH resources within the CORESET according to the determined RNTI of the terminal, the AL of the dedicated search space, and the number of PDCCH candidate corresponding to the AL, where the radio network temporary identifier RNTI includes a temporary cell radio network temporary identifier TC-RNTI or a cell radio network temporary identifier C-RNTI.

[0057] As an optional implementation manner, the base station determines the PDCCH resources, including:

[0058] The base station uses the RNTI as a randomization parameter of a hash function, and determines the PDCCH resources for transmitting the small data within the search space based on the hash function according to the AL and the number of PDCCH candidates corresponding to the AL.

[0059] As an optional implementation manner, after the base station determines the resource configuration information of the dedicated search space for transmitting the small data of the terminal, it further includes:

[0060] The base station sends the at least one resource configuration information to the terminal through explicit signaling, and the explicit signaling includes broadcast signaling or dedicated signaling; or,

[0061] The base station sends the at least one resource configuration information to the terminal through a contention resolution message Msg4 or MsgB.

[0062] As an optional implementation manner, after the base station determines the PDCCH resources for transmitting the small data, it further includes:

[0063] The base station sends the downlink control information DCI of the small data within the dedicated search space, where the cyclic redundancy check CRC of the DCI is scrambled by the C-RNTI of the terminal.

[0064] As an optional implementation manner, after the base station determines the PDCCH resources for transmitting the small data, it further includes:

[0065] The base station starts to send the DCI after sending Msg2 or Msg4 or MsgB, where the DCI is carried by the PDCCH resources; or,

[0066] The base station starts to send the DCI after receiving Msg1 or Msg3 or MsgA, where the DCI is carried by the PDCCH resources.

[0067] As an optional implementation manner, after the base station determines the PDCCH resources for transmitting the small data, it further includes:

[0068] The base station stops sending the DCI after sending a radio resource control RRC release signaling, where the DCI is carried by the PDCCH resources; or,

[0069] The base station stops sending the DCI after sending the resource configuration information of the user dedicated search space USS and / or the type 3 common search space CSS, where the DCI is carried by the PDCCH resources.

[0070] As an alternative implementation, after the base station determines the PDCCH resources for transmitting the small data before determining that the terminal enters the connected state for the first time, it further includes:

[0071] The base station determines that before the terminal enters the connected state next time, the small data is transmitted according to the PDCCH resources determined before the first entry into the connected state.

[0072] As an alternative implementation, after the base station determines that the terminal enters the connected state this time and before the next entry into the connected state, it further includes:

[0073] The base station transmits the small data according to the resource configuration information determined after the terminal enters the connected state this time; and / or,

[0074] The base station sends an indication signaling to instruct the terminal to transmit the small data according to the resource configuration information determined after the terminal enters the connected state this time before the next entry into the connected state.

[0075] In a third aspect, an embodiment of the present invention further provides a resource allocation terminal for small data transmission. The terminal includes a processor and a memory. The memory is used to store a program executable by the processor. The processor is used to read the program in the memory and execute the following steps:

[0076] Before entering the connected state, determine the resource configuration information of the dedicated search space for transmitting small data, where the small data is used to represent data with a data volume less than a threshold;

[0077] According to the resource configuration information of the dedicated search space, determine the physical downlink control channel PDCCH resources for transmitting the small data.

[0078] As an alternative implementation, the processor is specifically configured to execute:

[0079] According to the resource configuration information of at least one predefined dedicated search space, determine the resource configuration information of the dedicated search space for transmitting small data; and / or,

[0080] According to the received explicit signaling carrying the resource configuration information of at least one dedicated search space, determine the resource configuration information of the dedicated search space for transmitting small data, where the explicit signaling includes broadcast signaling or dedicated signaling.

[0081] As an alternative implementation, there are multiple pieces of resource configuration information of the dedicated search space, and each resource configuration information corresponds to a unique resource configuration information number;

[0082] The processor is specifically configured to execute:

[0083] Determine the resource configuration information corresponding to the RO number from the multiple resource configuration information according to the mapping relationship between the random access opportunity RO number selected by sending the random access preamble preamble and the resource configuration information number; or,

[0084] Determine the resource configuration information corresponding to the SSB index value from the multiple resource configuration information according to the mapping relationship between the received synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number; or,

[0085] Determine the resource configuration information corresponding to the indication information from the multiple resource configuration information according to the indication information carried in the received contention resolution message Msg4 or MsgB.

[0086] As an optional implementation manner, the resource configuration information includes any one or any combination of the following:

[0087] The aggregation level AL of the dedicated search space;

[0088] The number of PDCCH candidates candidate corresponding to each AL of the dedicated search space;

[0089] The blind detection period parameter of the dedicated search space;

[0090] The control resource set CORESET corresponding to the dedicated search space.

[0091] As an optional implementation manner, the processor is specifically configured to execute:

[0092] Determine the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0093] Within the CORESET, determine the PDCCH resource according to the radio network temporary identity RNTI of the terminal, the AL of the dedicated search space, and the number of PDCCH candidates candidate corresponding to the AL, where the RNTI includes a temporary cell radio network temporary identity TC-RNTI or a cell radio network temporary identity C-RNTI.

[0094] As an optional implementation manner, the processor is specifically configured to execute:

[0095] Use the RNTI as the randomization parameter of the hash function, and based on the hash function, determine the PDCCH resource for transmitting the small data within the search space according to the AL and the number of PDCCH candidates candidate corresponding to the AL.

[0096] As an alternative implementation manner, after determining the PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space, the processor is further specifically configured to perform:

[0097] Detect downlink control information DCI for receiving the small data within the dedicated search space, where the cyclic redundancy check CRC of the DCI is scrambled by the C-RNTI of the terminal.

[0098] As an alternative implementation manner, after determining the physical downlink control channel PDCCH resources for transmitting the small data, the processor is further specifically configured to perform:

[0099] After receiving Msg2 or Msg4 or MsgB, start listening to the PDCCH resources; or,

[0100] Before sending Msg1 or Msg3 or MsgA, start listening to the PDCCH resources.

[0101] As an alternative implementation manner, after determining the physical downlink control channel PDCCH resources for transmitting the small data, the processor is further specifically configured to perform:

[0102] After receiving a radio resource control RRC release signaling, stop listening to the PDCCH resources; or,

[0103] After receiving the resource configuration information of the user-specific search space USS and / or type 3 common search space CSS, stop listening to the PDCCH resources.

[0104] As an alternative implementation manner, after determining the PDCCH resources for transmitting the small data before initially entering the connected state, the processor is further specifically configured to perform:

[0105] Before the next entry into the connected state, transmit the small data according to the PDCCH resources determined before initially entering the connected state.

[0106] As an alternative implementation manner, after the current entry into the connected state and before the next entry into the connected state, the processor is further specifically configured to perform:

[0107] Transmit the small data according to the resource configuration information determined after the current entry into the connected state; or,

[0108] Transmit the small data according to the received indication signaling, where the indication signaling is used to instruct the terminal to transmit the small data according to the resource configuration information determined after the current entry into the connected state.

[0109] Fourthly, an embodiment of the present invention further provides a network - side device for resource allocation in small - data transmission. The network - side device includes a processor and a memory. The memory is used to store programs executable by the processor, and the processor is used to read the programs in the memory and execute the following steps:

[0110] Before determining that the terminal enters the connected state, determine the resource configuration information of the dedicated search space for transmitting the small data of the terminal, where the small data is used to characterize data with a data volume less than a threshold;

[0111] According to the resource configuration information of the dedicated search space, determine the physical downlink control channel PDCCH resources for transmitting the small data.

[0112] As an optional implementation manner, the processor is specifically configured to execute:

[0113] According to the resource configuration information of at least one predefined dedicated search space, determine the resource configuration information of the dedicated search space for transmitting the small data of the terminal.

[0114] As an optional implementation manner, there are multiple pieces of resource configuration information of the dedicated search space, and each resource configuration information corresponds to a unique resource configuration information number;

[0115] The processor is specifically configured to execute:

[0116] According to the mapping relationship between the received random access opportunity RO number and the resource configuration information number, determine the resource configuration information corresponding to the RO number from the multiple pieces of resource configuration information; or,

[0117] According to the mapping relationship between the synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number, determine the resource configuration information corresponding to the SSB index value from the multiple pieces of resource configuration information; or,

[0118] Determine the resource configuration information from the multiple pieces of resource configuration information by itself.

[0119] As an optional implementation manner, the resource configuration information includes any one or any combination of the following:

[0120] The aggregation level AL of the dedicated search space;

[0121] The number of PDCCH candidate sets candidate corresponding to each AL of the dedicated search space;

[0122] The blind detection period parameter of the dedicated search space;

[0123] The control resource set CORESET corresponding to the dedicated search space.

[0124] As an alternative implementation manner, the processor is specifically configured to execute:

[0125] Determine the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0126] Within the CORESET, determine the PDCCH resource according to the determined RNTI of the terminal, the AL of the dedicated search space, and the number of PDCCH candidates corresponding to the AL, where the radio network temporary identifier RNTI includes a temporary cell radio network temporary identifier TC-RNTI or a cell radio network temporary identifier C-RNTI.

[0127] As an alternative implementation manner, the processor is specifically configured to execute:

[0128] Use the RNTI as the randomization parameter of the hash function, and based on the hash function, determine the PDCCH resource for transmitting the small data within the search space according to the AL and the number of PDCCH candidates corresponding to the AL.

[0129] As an alternative implementation manner, after determining the resource configuration information of the dedicated search space for transmitting the small data of the terminal, the processor is specifically further configured to execute:

[0130] Send the at least one resource configuration information to the terminal through a signaling message, where the signaling message includes a broadcast signaling message or a dedicated signaling message; or,

[0131] Send the at least one resource configuration information to the terminal through a contention resolution message Msg4 or MsgB.

[0132] As an alternative implementation manner, after determining the PDCCH resource for transmitting the small data, the processor is specifically further configured to execute:

[0133] Send the downlink control information DCI of the small data within the dedicated search space, where the cyclic redundancy check CRC of the DCI is scrambled by the C-RNTI of the terminal.

[0134] As an alternative implementation manner, after determining the PDCCH resource for transmitting the small data, the processor is specifically further configured to execute:

[0135] After sending Msg2 or Msg4 or MsgB, start sending the DCI, where the DCI is carried by the PDCCH resource; or,

[0136] After receiving Msg1 or Msg3 or MsgA, start sending DCI, where the DCI is carried by the PDCCH resource.

[0137] As an optional implementation manner, after determining the PDCCH resource for transmitting the small data, the processor is further specifically configured to perform:

[0138] After sending the radio resource control (RRC) release signaling, stop sending DCI, where the DCI is carried by the PDCCH resource; or,

[0139] After sending the resource configuration information of the user-specific search space (USS) and / or the type 3 common search space (CSS), stop sending DCI, where the DCI is carried by the PDCCH resource.

[0140] As an optional implementation manner, before determining that the terminal enters the connected state for the first time and after determining the PDCCH resource for transmitting the small data, the processor is further specifically configured to perform:

[0141] Determine that before the terminal enters the connected state next time, transmit the small data according to the PDCCH resource determined before entering the connected state for the first time.

[0142] As an optional implementation manner, after determining that the terminal enters the connected state this time and before entering the connected state next time, the processor is further specifically configured to perform:

[0143] Transmit the small data according to the resource configuration information determined after the terminal enters the connected state this time; and / or,

[0144] Send indication signaling, where the indication signaling is used to indicate that before the terminal enters the connected state next time, transmit the small data according to the resource configuration information determined after entering the connected state this time.

[0145] In a fifth aspect, an embodiment of the present invention further provides a computer storage medium, on which a computer program is stored, and when the program is executed by a processor, it is used to implement the steps of the method described in the first aspect or the second aspect above.

[0146] These aspects or other aspects of the present application will be more clearly understood in the following description of the embodiments. Description of the Drawings

[0147] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the attached drawings required for the description of the embodiments. Obviously, the attached drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other attached drawings can be obtained based on these attached drawings without creative efforts.

[0148] Figure 1 It is a schematic diagram of the process of a 4-step contention-based random access provided by the embodiment of the present invention;

[0149] Figure 2 It is a schematic diagram of the process of a 2-step contention-based random access provided by the embodiment of the present invention;

[0150] Figure 3 It is a flowchart of the resource allocation method for small data transmission provided by the embodiment of the present invention;

[0151] Figure 4A 、 Figure 4B It is a schematic diagram of the mapping relationship between the RO number and the resource configuration information number provided by the embodiment of the present invention;

[0152] Figure 4C 、 Figure 4D It is a schematic diagram of the mapping relationship between the SSB index value and the resource configuration information number provided by the embodiment of the present invention;

[0153] Figure 4E 、 Figure 4F It is a schematic diagram of the mapping relationship between the RO number and the SSB index value provided by the embodiment of the present invention;

[0154] Figure 5A It is the corresponding relationship between the resource configuration information of the dedicated search space and the CORESET ID provided by the embodiment of the present invention;

[0155] Figure 5B It is the corresponding relationship between the resource configuration information of the dedicated search space and the CORESET ID provided by the embodiment of the present invention;

[0156] Figure 6A It is a schematic diagram of the frequency domain position of the resource mapping of the CCE of the PDCCH of a small data UE provided by the embodiment of the present invention;

[0157] Figure 6B It is a schematic diagram of the time domain position of the dedicated search space of a small data UE provided by the embodiment of the present invention;

[0158] Figure 7 It is a flowchart of the resource allocation method for small data transmission provided by the embodiment of the present invention;

[0159] Figure 8 Schematic diagram of a resource allocation system for small data transmission provided by an embodiment of the present invention;

[0160] Figure 9A Flowchart of an embodiment for a terminal and a base station to determine resource configuration information of a dedicated search space according to a predefined manner;

[0161] Figure 9B Flowchart of an embodiment for a terminal and a base station to determine resource configuration information of a dedicated search space according to a predefined manner;

[0162] Figure 10A Flowchart of an embodiment for a terminal and a base station to determine resource configuration information of multiple dedicated search spaces according to a predefined manner;

[0163] Figure 10B Flowchart of an embodiment for a terminal and a base station to determine resource configuration information of multiple dedicated search spaces according to a predefined manner;

[0164] Figure 11A Flowchart of an embodiment for a base station to send resource configuration information of a dedicated search space to a terminal through SIB1;

[0165] Figure 11B Flowchart of an embodiment for a base station to send resource configuration information of a dedicated search space to a terminal through SIB1;

[0166] Figure 12A Flowchart of an embodiment for a base station to send resource configuration information of a dedicated search space to a terminal through RRC signaling;

[0167] Figure 12B Flowchart of an embodiment for a base station to send resource configuration information of a dedicated search space to a terminal through RRC signaling;

[0168] Figure 13A Flowchart of an embodiment for a base station to send resource configuration information of multiple dedicated search spaces to a terminal through SIB1;

[0169] Figure 13B Flowchart of an embodiment for a base station to send resource configuration information of multiple dedicated search spaces to a terminal through SIB1;

[0170] Figure 14AFlowchart for a base station to send resource configuration information of multiple dedicated search spaces to a terminal via RRC signaling provided by an embodiment of the present invention;

[0171] Figure 14B Flowchart for a base station to send resource configuration information of multiple dedicated search spaces to a terminal via RRC signaling provided by an embodiment of the present invention;

[0172] Figure 15A Flowchart for a base station to send indication information to a terminal via a contention resolution message provided by an embodiment of the present invention;

[0173] Figure 15B Flowchart for a base station to send indication information to a terminal via a contention resolution message provided by an embodiment of the present invention;

[0174] Figure 16A Flowchart for a base station to send indication information to a terminal via a contention resolution message provided by an embodiment of the present invention;

[0175] Figure 16B Flowchart for a base station to send indication information to a terminal via a contention resolution message provided by an embodiment of the present invention;

[0176] Figure 17A Flowchart for an embodiment of the present invention to send resource configuration information of a part of a dedicated search space by pre - defining it, and to send resource configuration information of the remaining part of the dedicated search space to a terminal via SIB1;

[0177] Figure 17B Flowchart for an embodiment of the present invention to send resource configuration information of a part of a dedicated search space by pre - defining it, and to send resource configuration information of the remaining part of the dedicated search space to a terminal via SIB1;

[0178] Figure 18A Flowchart for an embodiment of the present invention to send resource configuration information of a part of a dedicated search space by pre - defining it, and to send resource configuration information of the remaining part of the dedicated search space to a terminal via RRC signaling;

[0179] Figure 18B Flowchart for an embodiment of the present invention to send resource configuration information of a part of a dedicated search space by pre - defining it, and to send resource configuration information of the remaining part of the dedicated search space to a terminal via RRC signaling;

[0180] Figure 19 Schematic diagram of a resource - allocating terminal for small data transmission provided by an embodiment of the present invention;

[0181] Figure 20 Schematic diagram of a network - side device for resource allocation in small - data transmission provided by an embodiment of the present invention;

[0182] Figure 21 Schematic diagram of a device for resource allocation in small - data transmission provided by an embodiment of the present invention;

[0183] Figure 22 Schematic diagram of a device for resource allocation in small - data transmission provided by an embodiment of the present invention. Detailed implementation manners

[0184] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0185] A method for resource allocation in small - data transmission provided by an embodiment of the present invention can be applied to a terminal or a network - side device.

[0186] The technical solutions provided by the embodiments of this application can be applied to a variety of systems, especially 5G systems. For example, the applicable systems can be the global system of mobile communication (GSM) system, code division multiple access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) general packet radio service (GPRS) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (NR) system, etc. Both terminal devices and network devices are included in these various systems. The system may also include a core network part, such as the Evolved Packet System (EPS), 5G System (5GS), etc.

[0187] The terminal device involved in the embodiments of this application can be a device that provides voice and / or data connectivity to users, such as a handheld device with wireless connection capabilities, or other processing devices connected to a wireless modem, etc. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device can be called a User Equipment (UE). The wireless terminal device can communicate with one or more core networks (CN) via a Radio Access Network (RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it can be a portable, pocket-sized, handheld, computer-integrated, or vehicle-mounted mobile device that exchanges language and / or data with the wireless access network. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device can also be called a system, subscriber unit, subscriber station, mobile station, mobile, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, which is not limited in the embodiments of this application.

[0188] The network-side device involved in the embodiments of this application can be a base station, which can include multiple cells that provide services to terminals. Depending on the specific application scenarios, the base station can also be referred to as an access point, or it can be a device in the access network that communicates with wireless terminal devices through one or more sectors over the air interface, or have other names. The network-side device can be used to mutually replace the received air frames and Internet Protocol (IP) packets, and act as a router between the wireless terminal device and the rest of the access network, where the rest of the access network can include an Internet Protocol (IP) communication network. The network-side device can also coordinate the management of the attributes of the air interface. For example, the network-side device involved in the embodiments of this application can be a network-side device (Base Transceiver Station, BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), or it can be a network-side device (NodeB) in a Wide-band Code Division Multiple Access (WCDMA), or it can also be an evolved network-side device (evolutional Node B, eNB or e-NodeB) in a Long Term Evolution (LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), or it can be a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc. This application does not limit the embodiments. In some network architectures, the network device can include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node, and the centralized unit and the distributed unit can also be arranged separately geographically.

[0189] The network-side device and the terminal device can each use one or more antennas for multi-input multi-output (MIMO) transmission. The MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). According to the form and quantity of the antenna combinations, the MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or it can be diversity transmission, precoding transmission, beamforming transmission, etc.

[0190] In the embodiments of the present invention, the term "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0191] In the embodiments of this application, the term "a plurality of" refers to two or more, and other quantifiers are similar.

[0192] The application scenarios described in the embodiments of the present invention are for more clearly explaining the technical solutions of the embodiments of the present invention, and do not constitute a limitation on the technical solutions provided by the embodiments of the present invention. Those skilled in the art know that with the emergence of new application scenarios, the technical solutions provided by the embodiments of the present invention are also applicable to similar technical problems.

[0193] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application.

[0194] Embodiment 1: The embodiments of the present invention are applied to the random access process. For Small data UEs in the initial random access stage (i.e., the stage before entering the connected state), continuous uplink data transmission will cause the Type1-PDCCH resources (common search space) to be occupied for a long time, and finally, there will be PDCCH resource scheduling blocking problems between normal UEs or between small data UEs, as well as PDCCH resource scheduling blocking problems between broadcast information and unicast information.

[0195] First, a brief introduction to the random access process involved in the embodiments of the present invention will be given below.

[0196] The random access in LTE and the conventional random access in NR are mainly divided into two types: contention-based random access and non-contention-based random access. The process of contention-based random access is as follows Figure 1 shown, which is divided into four steps and is also called the 4-step RACH process. It includes the transmission of 4 messages, and the messages transmitted in each step are as follows:

[0197] Msg1: The UE selects a random access preamble and sends the selected random access preamble to the base station on the PRACH (Physical Random Access Channel) resource configured in SIB1.

[0198] Msg2: The base station receives the preamble and sends a random access response.

[0199] Msg3: The UE transmits Msg3 on the uplink PUSCH resource indicated by the UL grant carried in the RAR. Among them, different random access processes correspond to different contents of the Msg3 uplink transmission. For example, for an initially accessing UE, Msg3 sends an RRC connection establishment request and a UE identifier, while for a UE in the connected state, a C-RNTI MAC CE is sent in Msg3. In short, Msg3 sends a unique UE identifier for the base station to finally uniquely determine the UE.

[0200] Msg4: Also called the contention resolution message, the UE determines whether the random access is successful according to Msg4. For an idle UE or an inactive UE, Msg4 carries a CCCH MAC CE containing the RRC signaling content of Msg3; for a connected-state UE, Msg4 is scheduled by a PDCCH with the UE's unique identifier C-RNTI within the cell, and this PDCCH can achieve contention resolution. For an idle UE or an inactive UE, after successful contention resolution, the temporary C-RNTI is converted into the UE's unique UE identifier C-RNTI in this cell.

[0201] As Figure 2 shown, in the new-generation wireless network NR system, based on the 4-step RACH, a two-step random access 2-step RACH process is derived for contention-based random access. Among them, MsgA is divided into preamble transmission on the PRACH and data transmission on the PUSCH, which is equivalent to Msg1 and Msg3 in the 4-step RACH process; msgB is the random access response and contention resolution, which is equivalent to Msg2 and Msg4 in the 4-step RACH process. In addition, because msgB contains UE contention resolution information, its size must be different from Msg2.

[0202] During the 2-step RACH process, the base station may send a random access response (or data message) to the UE, including but not limited to any one or more of the following:

[0203] 1) Random access is successful (success response);

[0204] 2) Fall back to the 4-step response (fallback response);

[0205] 3) Random access sequence number (Random access ID response);

[0206] 4) Data message.

[0207] In order to solve the problem of PDCCH resource scheduling blocking caused by Small data UE occupying Type1-PDCCH resources for a long time in the prior art, an embodiment of the present invention provides a resource allocation method for small data transmission, which is applied to a terminal, such as Figure 3 As shown, the implementation steps of this method are as follows:

[0208] Step 300: Before entering the connected state, the terminal determines resource configuration information of a dedicated search space for transmitting small data, wherein the small data is used to represent data whose amount is less than a threshold;

[0209] Among them, the small data in this embodiment can be data that needs to be sent continuously, data that needs to be sent periodically, data that needs to be sent in batches, or data that needs to be sent all at once, and this embodiment does not impose too many restrictions on this.

[0210] Step 301: The terminal determines a physical downlink control channel PDCCH resource for transmitting the small data according to resource configuration information of the dedicated search space.

[0211] The embodiment of the present invention transmits small data through the PDCCH resources in the dedicated search space. The dedicated search space in this embodiment is different from the public search space, that is, the small data terminal in the embodiment of the present invention does not need to occupy the PDCCH resources of the public search space when continuously sending data, which can avoid the scheduling blocking problem of PDCCH resources between UEs and the scheduling blocking problem of PDCCH resources between broadcast information and on-demand information to a certain extent.

[0212] It should be noted that the embodiment of the present invention is based on how to avoid the PDCCH resource scheduling blocking problem when the terminal is in the random access process and has not entered the connected state. The core is to configure a dedicated search space for the terminal. The terminal can determine to transmit small data on the PDCCH resources of the dedicated search space based on the resource configuration information of the dedicated search space.

[0213] As an alternative implementation, the terminal determines the PDCCH resources for transmitting the small data through any one or more of the following methods according to the resource configuration information of the dedicated search space:

[0214] Method 1: Determine through a predefined method.

[0215] The terminal determines the resource configuration information of the dedicated search space for transmitting small data according to the resource configuration information of at least one predefined dedicated search space.

[0216] In implementation, the terminal can predefine the resource configuration information of a dedicated search space and determine the PDCCH resources for the terminal to transmit small data from the one resource configuration information; or,

[0217] The terminal can predefine the resource configuration information of multiple dedicated search spaces, determine one resource configuration information from the resource configuration information of the multiple dedicated search spaces, and then determine the PDCCH resources for the terminal to transmit small data from the one resource configuration information. Each of the multiple resource configuration information corresponds to a unique resource configuration information number.

[0218] Optionally, the embodiment of the present invention determines one resource configuration information from the resource configuration information of multiple dedicated search spaces through the following method:

[0219] Method 11: The terminal determines the resource configuration information corresponding to the RO number from the multiple resource configuration information according to the mapping relationship between the RO (Random Access Channel Occasion) number selected by transmitting the random access preamble and the resource configuration information number.

[0220] It should be noted that the RO number in the embodiment of the present invention is a valid RO number, and the valid RO number can be specified by the 5G NR protocol or determined according to the multiple resource configuration information numbers in the embodiment of the present invention.

[0221] In implementation, the resource configuration information number is determined according to the following formula based on the RO number:

[0222] n sd-SS configuration = mod(RO index / N);

[0223] wherein, n sd-SS configuration represents the resource configuration information number; RO index represents the RO number, and N represents the number of the resource configuration information of the dedicated search space.

[0224] Optionally, the mapping relationship between the RO number and the resource configuration information number can be predefined or determined by the mapping relationship between the RO number and the resource configuration information number carried in the received display signaling. The embodiments of the present invention do not make excessive limitations on this. Among them, the display signaling includes broadcast signaling (such as SIB1 message) and dedicated signaling (such as RRC release signaling).

[0225] Such as Figure 4A , Figure 4B is a mapping relationship between the RO number and the resource configuration information number provided by the embodiments of the present invention. Among them, PDCCH Config.Index#n represents the resource configuration information number in this embodiment, and n is an integer greater than or equal to zero.

[0226] Method 12. The terminal determines the resource configuration information corresponding to the SSB index value from the multiple resource configuration information according to the mapping relationship between the received SSB (synchronization signal and physical broadcast channel PBCH block) index value and the resource configuration information number.

[0227] In implementation, the resource configuration information number is determined according to the following formula based on the SSB index value:

[0228] n sd-SS configuration = mod(SSB index / N);

[0229] Among them, the n sd-SS configuration represents the resource configuration information number; the SSB index represents the SSB index value; N represents the number of resource configuration information in the dedicated search space.

[0230] In implementation, the SSB index value can be determined according to the measured RSRP (Reference Signal Receiving Power) of the SSB.

[0231] Optionally, the mapping relationship between the SSB index value and the resource configuration information number can be predefined or determined by the mapping relationship between the SSB index value and the resource configuration information number carried in the received display signaling. The embodiments of the present invention do not make excessive limitations on this. Among them, the display signaling includes broadcast signaling (such as SIB1 message) and dedicated signaling (such as RRC release signaling).

[0232] Such as Figure 4C , Figure 4DA mapping relationship between an SSB index value and a resource configuration information number provided by an embodiment of the present invention, where PDCCH Config.Index#n represents the resource configuration information number in this embodiment, and n is an integer greater than or equal to zero.

[0233] Such as Figure 4E , Figure 4F An embodiment of the present invention further provides a mapping relationship between an RO number and an SSB index value.

[0234] Method 13. The terminal determines the resource configuration information corresponding to the indication information from the multiple resource configuration information according to the indication information carried in the received contention resolution message Msg4 or MsgB.

[0235] In implementation, the terminal determines a resource configuration information corresponding to the indication information from the resource configuration information of multiple predefined dedicated search spaces according to the indication information.

[0236] Way 2. Determine by means of display signaling.

[0237] The terminal determines the resource configuration information of the dedicated search space for transmitting small data according to the received display signaling carrying the resource configuration information of at least one dedicated search space, and the display signaling includes broadcast signaling or dedicated signaling;

[0238] Optionally, the broadcast signaling may be SIB1 (System Information Block) signaling, and the dedicated signaling includes but is not limited to RRC signaling, such as RRC release signaling.

[0239] In implementation, the terminal may determine the PDCCH resource for the terminal to transmit small data from the received resource configuration information of a dedicated search space; or,

[0240] The terminal may determine a resource configuration information from the received resource configuration information of multiple dedicated search spaces, and then determine the PDCCH resource for the terminal to transmit small data from the one resource configuration information. Wherein, each resource configuration information in the multiple resource configuration information corresponds to a unique resource configuration information number.

[0241] Optionally, for the embodiment of the present invention to determine a resource configuration information from the resource configuration information of multiple dedicated search spaces, reference may be made to the method in Way 1 above, which will not be elaborated here.

[0242] Way 3. Determine by means of predefined and display signaling.

[0243] The terminal determines the resource configuration information of the first part of the dedicated search space for transmitting small data according to the resource configuration information of the first part of at least one predefined dedicated search space;

[0244] The terminal determines the resource configuration information of the second part of the dedicated search space for transmitting small data according to the indication signaling carrying the resource configuration information of the second part of at least one dedicated search space, and the indication signaling includes broadcast signaling or dedicated signaling;

[0245] Wherein the resource configuration information includes: the resource configuration information of the first part and the resource configuration information of the second part.

[0246] Optionally, for the embodiments of the present invention to determine a resource configuration information from the resource configuration information of multiple dedicated search spaces, the multiple methods in the above-mentioned manner 1 can be referred to, which will not be elaborated here.

[0247] As an optional implementation method, the resource configuration information in this embodiment includes any one or any combination of the following. If the resource configuration information is multiple, each resource configuration information includes any one or any combination of the following:

[0248] 1) The AL (aggregation level) of the dedicated search space;

[0249] Where AL is understood as the CCE (Control Channel Element) aggregation level of the PDCCH;

[0250] 2) The number of PDCCH candidates corresponding to each AL of the dedicated search space;

[0251] 3) The blind detection period parameter of the dedicated search space;

[0252] In implementation, it includes the slot period and offset (unit: slot) of the dedicated search space indicating the receiving PDCCH, and the starting position and number of OFDM symbols within the occupied slot (symbolswithinslot, in bitmap mode). Among them, the blind detection period parameter can determine the time domain position where the terminal needs to monitor the dedicated search space.

[0253] Optionally, the blind detection period parameter includes but is not limited to: the slot period, the offset in the time slot, the starting position of the OFDM symbol within the occupied slot, the number of occupied OFDMs (symbolswithinslot, representing the number of occupied OFDMs in bitmap mode), symbolswithinslot), and the duration of the time slot.

[0254] During implementation, the time domain position of the PDCCH resource for transmitting the small data can be determined according to the resource configuration information of the dedicated search space through the following formula:

[0255]

[0256] where n f is the frame number of the dedicated search space;

[0257] is the number of slots included in one frame;

[0258] n slot is the slot number within the frame number n f at the start of the dedicated search space;

[0259] offset is the starting position number of the OFDM symbols in the occupied slot in the RRC-configured blind detection period parameter;

[0260] P slot is the period in the RRC-configured blind detection period parameter.

[0261] 4) The CORESET (control-resource set) corresponding to the dedicated search space;

[0262] where the CORESET can be understood as a set of physical resource sets and is composed of multiple RBs in the frequency domain and 1, 2, or 3 OFDM symbols in the time domain.

[0263] Optionally, the CORESET corresponding to the dedicated search space can be determined by the CORESET ID, such as CORESET#0, or other CORESET IDs received by the terminal for the broadcast DCI.

[0264] As an alternative implementation, the terminal determines the PDCCH resource for transmitting the small data from the resource configuration information of the dedicated search space through the following steps:

[0265] Step 1: The terminal determines the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0266] Optionally, the terminal can determine the CORESET corresponding to the resource configuration information of the dedicated search space according to the CORESET ID associated with the dedicated search space.

[0267] Optionally, the CORESET ID can be the same CORESET ID as that used for the type1 PDCCH, such as Figure 5AAs shown in the figure, the CORESET where the PDCCH resources for transmitting small data in the embodiments of the present invention is the same as the CORESET where the type1 PDCCH is located, both being CORESET#0; where the PDCCH resources for transmitting small data are represented by New PDCCH for SDT (small data transmission) SS (search space); or,

[0268] The CORESET ID is different from the CORESET ID used by the type1 PDCCH, as Figure 5B As shown in the figure, the PDCCH resources for transmitting small data in the embodiments of the present invention correspond to CORESET#N, and the type1 PDCCH corresponds to CORESET#0, where N is an integer greater than zero. The PDCCH resources for transmitting small data are represented by New PDCCH for SDT (small data transmission) SS (search space).

[0269] It should be noted that regardless of whether the CORESET where the PDCCH resources for transmitting small data in the embodiments of the present invention is the same as the CORESET where the type1 PDCCH is located, it can ensure that the type1 PDCCH is not occupied to transmit small data for a long time, thereby reducing the PDCCH scheduling blocking probability between small data UEs and ordinary UEs.

[0270] Step 2: The terminal determines the PDCCH resources within the CORESET according to the radio network temporary identity RNTI of the terminal, the AL of the dedicated search space, and the number of PDCCH candidates corresponding to the AL.

[0271] In implementation, the terminal uses the RNTI as the randomization parameter of the hash function, and based on the hash function, determines the PDCCH resources for transmitting the small data within the search space according to the AL and the number of PDCCH candidates corresponding to the AL. The RNTI includes the temporary cell radio network temporary identity TC-RNTI or the cell radio network temporary identity C-RNTI. It is easy to understand that the terminal uses the RNTI as the randomization parameter of the hash function, determines the resource mapping frequency domain position of the PDCCH candidate corresponding to the RNTI according to the hash function, and then finally determines the PDCCH resource position for small data scheduling according to the CORESET information, the blind detection period parameter, and the number of PDCCH candidates under each AL in the resource configuration information.

[0272] AsFigure 6A As shown, since the RNTIs of the small data UEs in this embodiment are different, the frequency-domain positions of the CCE resource mappings of the PDCCHs of each small data UE are also different. In this way, the frequency-domain resources occupied by different small data UEs are different, thereby reducing the scheduling blocking probability of the PDCCH resources among small data UEs.

[0273] As Figure 6B shown, since the time-domain position of the dedicated search space of the small data UE in this embodiment is different from the time-domain position of the common search space of the Type1-PDCCH, the resources of the dedicated search space of the small data UE can be distinguished from the resources of the common search space of ordinary UEs, thereby reducing the PDCCH scheduling blocking probability between small data UEs and ordinary UEs.

[0274] It should be noted that the terminal obtains an RNTI before completing random access and receiving the configuration signaling of the USS and / or type3-CSS or the RRC release message. Since the RNTI is unique to the terminal, that is, the RNTI of each terminal is different, when the terminal uses the RNTI to determine the PDCCH resources in the dedicated search space, it is certain that the PDCCH resources for transmitting small data determined by different terminals are different, which can avoid the problem of PDCCH resource scheduling blocking in the same dedicated search space.

[0275] The embodiment of the present invention provides a comparison table of an AL and the corresponding number of PDCCH candidates of the AL, as shown below:

[0276]

[0277]

[0278] Among them, according to the corresponding relationship shown in the above table, the number of PDCCH candidates with the PDCCH resource AL of 4 can be configured to be 4; the number of PDCCH candidates with the PDCCH resource AL of 8 is 2; the number of candidate PDCCHs with the PDCCH resource AL of 16 is 1.

[0279] As an optional implementation manner, after the terminal determines the PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space, it can also use the resources of the dedicated search space to receive DCI, specifically as follows:

[0280] The terminal detects and receives downlink control information DCI for the small data within the dedicated search space, where the cyclic redundancy check CRC of the DCI is scrambled by the C-RNTI of the terminal.

[0281] As an alternative implementation, after the terminal in the embodiments of the present invention determines the PDCCH resource for transmitting the small data, the effective point of the PDCCH resource is determined in the following manner:

[0282] 1) The effective point of the PDCCH resource is after the terminal receives Msg2 or Msg4 or MsgB:

[0283] After the terminal receives Msg2 or Msg4 or MsgB, it starts listening to the PDCCH resource; or,

[0284] 2) The effective point of the PDCCH resource is before the terminal sends Msg1 or Msg3 or MsgA:

[0285] Before the terminal sends Msg1 or Msg3 or MsgA, it starts listening to the PDCCH resource.

[0286] As an alternative implementation, after the terminal in the embodiments of the present invention determines the PDCCH resource for transmitting the small data, the end point of the PDCCH resource is determined in the following manner:

[0287] 3) The end point of the PDCCH resource is after the terminal receives the RRC release signaling:

[0288] After the terminal receives the radio resource control RRC release signaling, it stops listening to the PDCCH resource;

[0289] It is easy to understand that when the small data terminal is in a non-connected state to save power after sending or receiving the small data, the base station will send an RRC release signaling to let the UE return to the non-active / inactive or idle state. The UE does not need to use the PDCCH resource in the idle / inactive state. Therefore, it is necessary to stop listening to the PDCCH resource after receiving the RRC release signaling to save the power of the terminal.

[0290] 4) The end point of the PDCCH resource is after the terminal receives the resource configuration information of the USS and / or type3 CSS:

[0291] After the terminal receives the resource configuration information of the user specific search space USS and / or the type3 common search space CSS, it stops listening to the PDCCH resource.

[0292] As an alternative implementation, after the terminal in the embodiments of the present invention determines the PDCCH resource for transmitting the small data before entering the connected state for the first time, it further includes:

[0293] Before the terminal enters the connected state next time, it transmits the small data according to the PDCCH resource determined before entering the connected state for the first time.

[0294] Optionally, before the terminal enters the connected state for the first time, it determines the PDCCH resource for transmitting the small data once through the method provided in the present embodiment. The detailed process is not described here again. Before the terminal enters the connected state next time, it can transmit the small data according to the PDCCH resource determined before entering the connected state for the first time in a manner agreed upon by the protocol.

[0295] Optionally, the terminal can also transmit the small data according to the signaling received from the base station and the indication information of the PDCCH resource carried in the signaling, which is determined before entering the connected state for the first time. That is, the terminal only needs to determine the PDCCH resource for transmitting the small data once, and then the terminal can transmit the small data according to the PDCCH resource determined before entering the connected state last time.

[0296] As an alternative implementation, the embodiments of the present invention also provide a method for determining the PDCCH resource for transmitting the small data, and the specific method is as follows:

[0297] After the terminal enters the connected state this time and before entering the connected state next time, it determines the PDCCH resource through any of the following methods:

[0298] Method 1: The terminal transmits the small data according to the resource configuration information determined after entering the connected state this time;

[0299] In implementation, the terminal determines the PDCCH resource for transmitting the small data according to the resource configuration information determined after entering the connected state this time, and transmits the small data through this PDCCH resource.

[0300] Optionally, the resource configuration information determined after the terminal enters the connected state this time includes but is not limited to: the resource configuration information of USS, and / or, the resource configuration information of type3 CSS.

[0301] In implementation, after the terminal enters the connected state this time and before entering the connected state next time, it can transmit the small data through the resource configuration information of USS in a pre-agreed manner; or, transmit the small data through the resource configuration information of type3 CSS.

[0302] Mode 2: The terminal transmits the small data according to the received indication signaling, where the indication signaling is used to instruct the terminal to transmit the small data according to the resource configuration information determined after entering the connected state this time.

[0303] Optionally, the resource configuration information includes, but is not limited to: resource configuration information of USS, and / or, resource configuration information of type3 CSS.

[0304] Optionally, the indication signaling is used to instruct the terminal to transmit the small data according to the resource configuration information of USS determined after entering the connected state this time; or, the indication signaling is used to instruct the terminal to transmit the small data according to the resource configuration information of type3 CSS determined after entering the connected state this time.

[0305] Optionally, the indication signaling can use a 1-bit specified bit to instruct the terminal to transmit the small data according to the resource configuration information of USS or type3 CSS determined after entering the connected state this time. For example, the indication signaling uses the bit value 0 of the specified bit to instruct the terminal to transmit the small data according to the resource configuration information of USS determined after entering the connected state this time, and uses the bit value 1 of the specified bit to instruct the terminal to transmit the small data according to the resource configuration information of type3 CSS determined after entering the connected state this time.

[0306] An embodiment of the present invention can also determine whether the terminal enters the connected state by the terminal receiving the resource configuration information of USS and / or type3 CSS. That is, if the terminal determines to enter the connected state after receiving the resource configuration information of USS and / or type3 CSS.

[0307] Embodiment 2: To solve the problem of PDCCH resource scheduling blockage caused by Small data UE occupying Type1-PDCCH resources for a long time in the prior art, based on the same inventive concept, an embodiment of the present invention provides a resource allocation method for small data transmission, which is applied to a base station, as Figure 7 shown, the implementation steps of this method are as follows:

[0308] Step 700: Before the base station determines that the terminal enters the connected state, determine the resource configuration information of the dedicated search space for transmitting the small data of the terminal, where the small data is used to represent data with a data volume less than a threshold;

[0309] Step 701: The base station determines the physical downlink control channel PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space.

[0310] In the embodiment of the present invention, small data is transmitted through PDCCH resources in a dedicated search space. The dedicated search space in this embodiment is different from the common search space. That is, in the embodiment of the present invention, when a small data terminal continuously sends data, it does not need to occupy the PDCCH resources in the common search space, which can avoid the scheduling blocking problem of PDCCH resources between UEs and the scheduling blocking problem of PDCCH resources between broadcast information and on-demand information to a certain extent. The core of the embodiment of the present invention is that the base station transmits small data through PDCCH resources in a dedicated search space different from the common search space.

[0311] As an alternative embodiment, the base station determines the resource configuration information of the dedicated search space for transmitting the small data of the terminal according to the resource configuration information of at least one predefined dedicated search space.

[0312] As an alternative embodiment, after the base station determines the resource configuration information of the dedicated search space for transmitting the small data of the terminal, it further includes:

[0313] Sending the at least one resource configuration information to the terminal through a signaling message, where the signaling message includes a broadcast signaling message or a dedicated signaling message; wherein, the broadcast signaling message may be an SIB1 message, and the dedicated signaling message may be an RRC release signaling message; or,

[0314] Sending the at least one resource configuration information to the terminal through a contention resolution message Msg4 or MsgB.

[0315] As an alternative embodiment, there are multiple pieces of resource configuration information of the dedicated search space predefined by the base station, and each piece of resource configuration information corresponds to a unique resource configuration information number;

[0316] The base station determines the resource configuration information of the dedicated search space for transmitting the small data of the terminal from the multiple pieces of resource configuration information of the dedicated search space in any of the following ways:

[0317] Method 1: The base station determines the resource configuration information corresponding to the RO number from the multiple pieces of resource configuration information according to the mapping relationship between the received random access opportunity (RO) number and the resource configuration information number;

[0318] It should be noted that the RO number in the embodiment of the present invention is a valid RO number, where the valid RO number may be specified by the 5G NR protocol or determined according to the multiple resource configuration information numbers in the embodiment of the present invention.

[0319] In implementation, the resource configuration information number is determined according to the following formula based on the RO number:

[0320] n sd-SS configuration = mod(RO index / N);

[0321] Among them, n sd-SS configuration represents the resource configuration information number; RO index represents the RO number, and N represents the number of resource configuration information of the dedicated search space.

[0322] Optionally, the mapping relationship between the RO number and the resource configuration information number can be predefined. The base station can send the mapping relationship to the terminal through a display signaling, where the display signaling includes a broadcast signaling (such as an SIB1 message) and a dedicated signaling (such as an RRC release signaling).

[0323] Method 2: The base station determines the resource configuration information corresponding to the SSB index value from the multiple resource configuration information according to the mapping relationship between the synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number;

[0324] In implementation, the resource configuration information number is determined according to the following formula based on the SSB index value:

[0325] n sd-SS configuration = mod(SSB index / N);

[0326] Among them, the n sd-SS configuration represents the resource configuration information number; the SSB index represents the SSB index value; N represents the number of resource configuration information of the dedicated search space.

[0327] Optionally, the mapping relationship between the SSB index value and the resource configuration information number can be predefined. The base station can send the mapping relationship to the terminal through a display signaling, where the display signaling includes a broadcast signaling (such as an SIB1 message) and a dedicated signaling (such as an RRC release signaling).

[0328] Method 3: The base station itself determines the resource configuration information from the multiple resource configuration information.

[0329] Optionally, the base station can send the determined resource configuration information to the terminal through a contention resolution message Msg4 or MsgB.

[0330] As an optional implementation manner, the resource configuration information includes any one or more of the following:

[0331] The aggregation level AL of the dedicated search space;

[0332] The number of candidates of the PDCCH corresponding to each AL in the dedicated search space;

[0333] The blind detection period parameter of the dedicated search space;

[0334] The control resource set CORESET corresponding to the dedicated search space.

[0335] As an optional implementation manner, the base station determines the PDCCH resource for transmitting the small data according to the resource configuration information of the dedicated search space through the following steps:

[0336] Step 1, the base station determines the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0337] Optionally, the base station may determine the CORESET corresponding to the resource configuration information of the dedicated search space according to the CORESET ID associated with the dedicated search space.

[0338] Optionally, the CORESET ID may be the same as the CORESET ID used by the type1 PDCCH, that is, the CORESET where the PDCCH resource for transmitting small data in the embodiment of the present invention is located is the same as the CORESET where the type1 PDCCH is located; or, the CORESET ID is different from the CORESET ID used by the type1 PDCCH, that is, the CORESET where the PDCCH resource for transmitting small data in the embodiment of the present invention is located is different from the CORESET where the type1 PDCCH is located.

[0339] It should be noted that regardless of whether the CORESET where the PDCCH resource for transmitting small data in the embodiment of the present invention is located is the same as the CORESET where the type1 PDCCH is located, it can be ensured that the type1 PDCCH is not occupied to transmit small data for a long time, thereby reducing the PDCCH scheduling blocking probability between small data UEs and ordinary UEs.

[0340] Step 2, the base station determines the PDCCH resource within the CORESET according to the determined RNTI of the terminal, the AL of the dedicated search space, and the number of PDCCH candidates corresponding to the AL;

[0341] In implementation, the base station uses the RNTI as the randomization parameter of the hash function, and determines the PDCCH resource for transmitting the small data in the search space based on the hash function according to the AL and the number of PDCCH candidates corresponding to the AL.

[0342] Wherein the RNTI includes TC-RNTI or C-RNTI.

[0343] It should be noted that after the base station determines that the terminal has completed random access, it will allocate a unique RNTI to the terminal. Since the RNTI is unique to the terminal, that is, the RNTI of each terminal is different, when using the RNTI to schedule the PDCCH resources in the dedicated search space, it is certain that the PDCCH resources for scheduling small data of different terminals are different, which can avoid the problem of PDCCH resource scheduling blockage in the same dedicated search space.

[0344] As an optional implementation manner, after the base station determines the PDCCH resources for transmitting the small data, it further includes:

[0345] The base station sends the DCI of the small data in the dedicated search space, where the CRC of the DCI is scrambled by the C-RNTI of the terminal.

[0346] As an optional implementation manner, after the base station determines the PDCCH resources for transmitting the small data in the embodiments of the present invention, the effective point of the PDCCH resources is determined by any of the following methods:

[0347] 1) The effective point of the PDCCH resources is after the base station sends Msg2 or Msg4 or MsgB:

[0348] That is, after the base station sends Msg2 or Msg4 or MsgB, it starts to send downlink control information (DCI), where the DCI is carried by the PDCCH resources;

[0349] It can be understood that DCI starts to be sent on the PDCCH resources for scheduling the transmission of small data.

[0350] 2) The effective point of the PDCCH resources is after the base station receives Msg1 or Msg3 or MsgA:

[0351] That is, after the base station receives Msg1 or Msg3 or MsgA, it starts to send DCI, where the DCI is carried by the PDCCH resources.

[0352] As an optional implementation manner, after the base station determines the PDCCH resources for transmitting the small data, the end point of the PDCCH resources is determined by the following method:

[0353] 3) The end point of the PDCCH resource is after the base station sends the RRC release signaling:

[0354] After the base station sends the Radio Resource Control (RRC) release signaling, it stops sending the Downlink Control Information (DCI), where the DCI is carried by the PDCCH resource;

[0355] 4) The end point of the PDCCH resource is after the base station sends the resource configuration information of the User-Specific Search Space (USS) and / or type 3 Common Search Space (CSS):

[0356] After the base station sends the resource configuration information of the User-Specific Search Space (USS) and / or type 3 Common Search Space (CSS), it stops sending the Downlink Control Information (DCI), where the DCI is carried by the PDCCH resource.

[0357] As an alternative implementation, an embodiment of the present invention further provides a method for determining the PDCCH resource for transmitting small data, and the specific method is as follows:

[0358] Before the base station determines that the terminal enters the connected state for the first time, after determining the PDCCH resource for transmitting the small data, it further includes:

[0359] The base station determines that before the terminal enters the connected state next time, it transmits the small data according to the PDCCH resource determined before the first entry into the connected state.

[0360] It should be noted that before the base station determines that the terminal enters the connected state for the first time, it determines the PDCCH resource for transmitting small data through the method provided in this embodiment, which will not be elaborated here. After the base station initially determines the PDCCH resource, it can determine, in a pre-agreed manner, that before the terminal enters the connected state for the first time and before the next entry into the connected state, it transmits the small data according to the PDCCH resource initially determined by the base station.

[0361] Optionally, after the base station determines that the terminal enters the connected state for the first time, it determines the PDCCH resource for transmitting small data through the method provided in this embodiment, which will not be elaborated here. After the base station initially determines the PDCCH resource, it can also send an indication signaling to the terminal, indicating that before the terminal enters the connected state for the first time and before the next entry into the connected state, it transmits the small data according to the PDCCH resource initially determined by the terminal

[0362] As an alternative implementation, after the base station determines that the terminal enters the connected state this time and before the next entry into the connected state, it further includes any one or any combination of the following embodiments:

[0363] Method 1: The base station transmits the small data according to the resource configuration information determined after the terminal enters the connected state this time;

[0364] Optionally, the resource configuration information determined after the terminal enters the connected state this time includes, but is not limited to, the resource configuration information of the USS, and / or the resource configuration information of the type 3 CSS.

[0365] In implementation, the base station may transmit the small data according to the pre-agreed manner through the resource configuration information of the USS; or transmit the small data through the resource configuration information of the type 3 CSS.

[0366] Method 2: The base station sends an indication signaling, which is used to instruct the terminal to transmit the small data according to the resource configuration information determined after this entry into the connected state before the next entry into the connected state.

[0367] In implementation, the base station may itself determine to use the resource configuration information of the USS or the resource configuration information of the type 3 CSS to transmit the small data, and send the determined resource configuration information to the terminal in the form of indication signaling.

[0368] Optionally, the indication signaling may use 1 bit of the specified bit to instruct the terminal to transmit the small data according to the resource configuration information of the USS or the resource configuration information of the type 3 CSS determined after this entry into the connected state.

[0369] Embodiment 3: The embodiment of the present invention provides a resource allocation method for small data transmission, which can be applied to a system. The system includes a terminal and a network-side device. The implementation steps of the system are described below:

[0370] As Figure 8 shown, the system includes a terminal 800 and a network-side device 801, where:

[0371] The terminal is used to determine the resource configuration information of the dedicated search space for transmitting small data and determine the physical downlink control channel PDCCH resources for transmitting the small data before entering the connected state;

[0372] The base station is used to determine the resource configuration information of the dedicated search space for transmitting the small data of the terminal before determining that the terminal enters the connected state, and determine the physical downlink control channel PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space.

[0373] Wherein the small data is used to represent data with a data volume less than a threshold.

[0374] As Figure 9A 、 Figure 9BAs shown in the figure, this embodiment provides a method for a terminal and a base station to determine the resource configuration information of a dedicated search space according to a predefined manner. The specific implementation steps are as follows:

[0375] Step 900: Before the terminal enters the connected state, the terminal and the base station determine the resource configuration information of the dedicated search space for transmitting small data according to the resource configuration information of a predefined dedicated search space;

[0376] Among them, the resource configuration information includes: the control resource set CORESET (optional CORESET ID) corresponding to the dedicated search space; the AL of the dedicated search space; the number of PDCCH candidates corresponding to each AL of the dedicated search space; the blind detection period parameter of the dedicated search space.

[0377] Step 901: The terminal and the base station determine the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0378] Step 902: Inside the CORESET, the terminal and the base station use the RNTI of the terminal as the randomization parameter of the hash function, and based on the hash function, according to the AL of the dedicated search space and the number of PDCCH candidates corresponding to the AL, determine the PDCCH resources for transmitting the small data in the search space;

[0379] Step 903a: After the terminal receives msg4 and before receiving the configuration signaling of USS or type3 PDCCH, the terminal starts to monitor the PDCCH resources, and the base station starts to send DCI, where the DCI is carried by the PDCCH resources; or,

[0380] Step 903b: After the terminal receives msgB and before receiving the configuration signaling of USS or type3 PDCCH, the terminal starts to monitor the PDCCH resources, and the base station starts to send DCI, where the DCI is carried by the PDCCH resources;

[0381] In implementation, the terminal sends small data through UL data and receives small data through DL data; the base station receives small data through UL data and sends small data through DL data.

[0382] Step 904: After the terminal receives the resource configuration information of USS or type3 CSS sent by the base station, the terminal stops monitoring the PDCCH resources, and the base station stops sending DCI, where the DCI is carried by the PDCCH resources;

[0383] Or,

[0384] After the terminal receives the RRC release signaling sent by the base station, the terminal stops listening to the PDCCH resources, and the base station stops sending DCI, where the DCI is carried by the PDCCH resources.

[0385] As Figure 10A 、 Figure 10B shown, this embodiment provides a terminal and a base station to determine the resource configuration information of multiple dedicated search spaces according to a predefined manner. The specific implementation steps are as follows:

[0386] Step 1000: Before the terminal enters the connected state, the terminal and the base station determine the resource configuration information of a dedicated search space for transmitting small data according to the resource configuration information of multiple dedicated search spaces defined in advance.

[0387] In implementation, the terminal and the base station determine the resource configuration information corresponding to the RO number from the multiple resource configuration information according to the mapping relationship between the RO number selected by sending the preamble and the resource configuration information number; or,

[0388] The terminal and the base station determine the resource configuration information corresponding to the SSB index value from the multiple resource configuration information according to the mapping relationship between the received SSB index value and the resource configuration information number; or,

[0389] The terminal determines the resource configuration information corresponding to the indication information from the multiple resource configuration information according to the indication information carried in Msg4 or MsgB sent by the received base station.

[0390] Step 1001: The terminal and the base station determine the CORESET corresponding to the dedicated search space according to the resource configuration information.

[0391] Step 1002: Inside the CORESET, the terminal and the base station use the RNTI of the terminal as the randomization parameter of the hash function, and based on the hash function, according to the AL of the dedicated search space and the number of PDCCH candidates corresponding to the AL, determine the PDCCH resources for transmitting the small data in the search space.

[0392] Step 1003a: After the terminal receives msg4 and before receiving the configuration signaling of USS or type3 PDCCH, the terminal starts listening to the PDCCH resources, and the base station starts sending DCI, where the DCI is carried by the PDCCH resources; or,

[0393] Step 1003b: After the terminal receives msgB and before receiving the configuration signaling of USS or type 3 PDCCH, the terminal starts to monitor the PDCCH resource and starts to send DCI, where the DCI is carried by the PDCCH resource;

[0394] In implementation, the terminal sends small data through UL data and receives small data through DL data; the base station receives small data through UL data and sends small data through DL data.

[0395] Step 1004: After the terminal receives the resource configuration information of USS or type 3 CSS sent by the base station, the terminal stops monitoring the PDCCH resource, and the base station stops sending DCI, where the DCI is carried by the PDCCH resource;

[0396] Or,

[0397] After the terminal receives the RRC release signaling sent by the base station, the terminal stops monitoring the PDCCH resource, and the base station stops sending DCI, where the DCI is carried by the PDCCH resource.

[0398] As Figure 11A 、 Figure 11B shown, this embodiment provides a method for a terminal to determine the resource configuration information of a dedicated search space according to display signaling, and the base station sends the resource configuration information of a dedicated search space to the terminal through SIB1. The specific implementation steps are as follows:

[0399] Step 1100: Before the terminal enters the connected state, the base station broadcasts the resource configuration information of a dedicated search space to the terminal through SIB1;

[0400] Step 1101: The terminal determines the resource configuration information of the dedicated search space for transmitting small data according to the received SIB1 broadcast signaling carrying the resource configuration information of a dedicated search space;

[0401] Step 1102: The terminal and the base station determine the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0402] Step 1103: In the CORESET, the terminal and the base station use the RNTI of the terminal as the randomization parameter of the hash function, and based on the hash function, according to the AL of the dedicated search space and the number of PDCCH candidates corresponding to the AL, determine the PDCCH resource for transmitting the small data in the search space;

[0403] Step 1104a: After the terminal receives msg4 and before receiving the configuration signaling of USS or type 3 PDCCH, the terminal starts to monitor the PDCCH resource, and the base station starts to send DCI, where the DCI is carried by the PDCCH resource; or,

[0404] Step 1104b: After the terminal receives msgB and before receiving the configuration signaling of USS or type 3 PDCCH, the terminal starts to monitor the PDCCH resource, and the base station starts to send DCI, where the DCI is carried by the PDCCH resource;

[0405] Step 1105: After the terminal receives the resource configuration information of USS or type 3 CSS sent by the base station, the terminal stops monitoring the PDCCH resource, and the base station stops sending DCI, where the DCI is carried by the PDCCH resource;

[0406] Or,

[0407] After the terminal receives the RRC release signaling sent by the base station, the terminal stops monitoring the PDCCH resource, and the base station stops sending DCI, where the DCI is carried by the PDCCH resource.

[0408] As Figure 12A 、 Figure 12B shown, this embodiment provides a method for a terminal to determine the resource configuration information of a dedicated search space according to display signaling and the base station to send the resource configuration information of a dedicated search space to the terminal through RRC signaling. The specific implementation steps are as follows:

[0409] Step 1200: Before the terminal enters the connected state, the base station sends the resource configuration information of a dedicated search space to the terminal through RRC signaling;

[0410] Step 1201: The terminal determines the resource configuration information of the dedicated search space for transmitting small data according to the received RRC signaling carrying the resource configuration information of a dedicated search space;

[0411] Step 1202: The terminal and the base station determine the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0412] Step 1203: In the CORESET, the terminal and the base station use the RNTI of the terminal as the randomization parameter of the hash function, and based on the hash function, according to the AL of the dedicated search space and the number of PDCCH candidates corresponding to the AL, determine the PDCCH resources for transmitting the small data in the search space;

[0413] Step 1204a: After the terminal receives msg4 and before receiving the configuration signaling of USS or type3 PDCCH, the terminal starts to monitor the PDCCH resource, and the base station starts to send DCI, where the DCI is carried by the PDCCH resource; or,

[0414] Step 1204b: After the terminal receives msgB and before receiving the configuration signaling of USS or type3 PDCCH, the terminal starts to monitor the PDCCH resource, and the base station starts to send DCI, where the DCI is carried by the PDCCH resource;

[0415] Step 1205: After the terminal receives the resource configuration information of USS or type3 CSS sent by the base station, the terminal stops monitoring the PDCCH resource, and the base station stops sending DCI, where the DCI is carried by the PDCCH resource.

[0416] As Figure 13A 、 Figure 13B shown, this embodiment provides a method for a terminal to determine the resource configuration information of a dedicated search space according to display signaling, and the base station sends the resource configuration information of multiple dedicated search spaces to the terminal through SIB1. The specific implementation steps are as follows:

[0417] Step 1300: Before the terminal enters the connected state, the base station broadcasts the resource configuration information of multiple dedicated search spaces to the terminal through SIB1;

[0418] Step 1301: The terminal determines the resource configuration information of a dedicated search space for transmitting small data from the SIB1 broadcast signaling carrying the resource configuration information of multiple dedicated search spaces received;

[0419] In implementation, the terminal and the base station determine the resource configuration information corresponding to the RO number from the multiple resource configuration information according to the mapping relationship between the RO number selected by sending the preamble and the resource configuration information number; or,

[0420] The terminal and the base station determine the resource configuration information corresponding to the SSB index value from the multiple resource configuration information according to the mapping relationship between the received SSB index value and the resource configuration information number; or,

[0421] The terminal determines the resource configuration information corresponding to the indication information from the multiple resource configuration information according to the indication information carried in Msg4 or MsgB sent by the received base station.

[0422] Step 1302: The terminal and the base station determine the CORESET corresponding to the dedicated search space according to the resource configuration information of the dedicated search space.

[0423] Step 1303: The terminal and the base station within the CORESET use the RNTI of the terminal as the randomization parameter of the hash function, and based on the hash function, determine the PDCCH resources for transmitting the small data within the search space according to the AL of the dedicated search space and the number of PDCCH candidates corresponding to the AL.

[0424] Step 1304a: After the terminal receives msg4 and before receiving the configuration signaling of the USS or type 3 PDCCH, the terminal starts to monitor the PDCCH resources, and the base station starts to send DCI, where the DCI is carried by the PDCCH resources; or,

[0425] Step 1304b: After the terminal receives msgB and before receiving the configuration signaling of the USS or type 3 PDCCH, the terminal starts to monitor the PDCCH resources, and the base station starts to send DCI, where the DCI is carried by the PDCCH resources.

[0426] Step 1305: After the terminal receives the resource configuration information of the USS or type 3 CSS sent by the base station, the terminal stops monitoring the PDCCH resources, and the base station stops sending DCI, where the DCI is carried by the PDCCH resources.

[0427] Or,

[0428] After the terminal receives the RRC release signaling sent by the base station, the terminal stops monitoring the PDCCH resources, and the base station stops sending DCI, where the DCI is carried by the PDCCH resources.

[0429] As Figure 14A 、 Figure 14B shown, this embodiment provides a method for a terminal to determine the resource configuration information of a dedicated search space according to the indication signaling, and the base station sends the resource configuration information of multiple dedicated search spaces to the terminal through the RRC signaling. The specific implementation steps are as follows:

[0430] Step 1400: Before the terminal enters the connected state, the base station sends the resource configuration information of multiple dedicated search spaces to the terminal through the RRC signaling.

[0431] Step 1401: The terminal determines the resource configuration information of a dedicated search space for transmitting small data from the received RRC signaling carrying the resource configuration information of multiple dedicated search spaces.

[0432] During implementation, the terminal and the base station determine, according to the mapping relationship between the RO number selected for sending the preamble and the resource configuration information number, the resource configuration information corresponding to the RO number from the multiple resource configuration information; or,

[0433] The terminal and the base station determine, according to the mapping relationship between the received SSB index value and the resource configuration information number, the resource configuration information corresponding to the SSB index value from the multiple resource configuration information; or,

[0434] The terminal determines, according to the indication information carried in Msg4 or MsgB sent by the received base station, the resource configuration information corresponding to the indication information from the multiple resource configuration information.

[0435] Step 1402: The terminal and the base station determine the CORESET corresponding to the dedicated search space according to the resource configuration information of the one dedicated search space;

[0436] Step 1403: Inside the CORESET, the terminal and the base station use the RNTI of the terminal as the randomization parameter of the hash function, and based on the hash function, according to the AL of the dedicated search space and the number of PDCCH candidates corresponding to the AL, determine the PDCCH resources for transmitting the small data within the search space;

[0437] Step 1404a: After the terminal receives msg4 and before receiving the configuration signaling of the USS or type3 PDCCH, the terminal starts to monitor the PDCCH resources, and the base station starts to send DCI, where the DCI is carried by the PDCCH resources; or,

[0438] Step 1404b: After the terminal receives msgB and before receiving the configuration signaling of the USS or type3 PDCCH, the terminal starts to monitor the PDCCH resources, and the base station starts to send DCI, where the DCI is carried by the PDCCH resources;

[0439] Step 1405: After the terminal receives the resource configuration information of the USS or type3 CSS sent by the base station, the terminal stops monitoring the PDCCH resources, and the base station stops sending DCI, where the DCI is carried by the PDCCH resources.

[0440] As Figure 15A 、 Figure 15B shown, this embodiment provides a method for a terminal to determine the resource configuration information of a dedicated search space according to display signaling, and for the base station to send the resource configuration information of multiple dedicated search spaces to the terminal through SIB1, and for the base station to send the indication information to the terminal through a contention resolution message. The specific implementation steps are as follows:

[0441] Step 1500: Before the terminal enters the connected state, the base station broadcasts the resource configuration information of multiple dedicated search spaces to the terminal through SIB1;

[0442] Step 1501a: The base station sends indication information to the terminal through Msg4, and the indication information carries one of the resource configuration information of the multiple dedicated search spaces;

[0443] Step 1501b: The base station sends indication information to the terminal through MsgB, and the indication information carries one of the resource configuration information of the multiple dedicated search spaces;

[0444] Step 1502: The terminal determines the resource configuration information of the dedicated search space for transmitting small data according to the received indication information;

[0445] Step 1503: The terminal and the base station determine the CORESET corresponding to the dedicated search space according to the one resource configuration information;

[0446] Step 1504: Inside the CORESET, the terminal and the base station use the RNTI of the terminal as the randomization parameter of the hash function, and based on the hash function, according to the AL of the dedicated search space and the number of PDCCH candidates corresponding to the AL, determine the PDCCH resources for transmitting the small data within the search space;

[0447] Step 1505a: After the terminal receives msg4 and before receiving the configuration signaling of USS or type3 PDCCH, the terminal starts to monitor the PDCCH resources, and the base station starts to send DCI, where the DCI is carried by the PDCCH resources; or,

[0448] Step 1505b: After the terminal receives msgB and before receiving the configuration signaling of USS or type3 PDCCH, the terminal starts to monitor the PDCCH resources, and the base station starts to send DCI, where the DCI is carried by the PDCCH resources;

[0449] Step 1506: After the terminal receives the resource configuration information of USS or type3 CSS sent by the base station, the terminal stops monitoring the PDCCH resources, and the base station stops sending DCI, where the DCI is carried by the PDCCH resources;

[0450] Or,

[0451] After the terminal receives the RRC release signaling sent by the base station, the terminal stops listening to the PDCCH resources, and the base station stops sending DCI, where the DCI is carried by the PDCCH resources.

[0452] As Figure 16A , Figure 16B shown, this embodiment provides a method for a terminal to determine the resource configuration information of a dedicated search space according to a display signaling, and the base station sends the resource configuration information of multiple dedicated search spaces to the terminal through RRC signaling. The base station sends indication information to the terminal through a contention resolution message. The specific implementation steps are as follows:

[0453] Step 1600: Before the terminal enters the connected state, the base station sends the resource configuration information of multiple dedicated search spaces to the terminal through RRC signaling;

[0454] Step 1601a: The base station sends indication information to the terminal through Msg4, and the indication information carries one resource configuration information among the resource configuration information of the multiple dedicated search spaces;

[0455] Step 1601b: The base station sends indication information to the terminal through MsgB, and the indication information carries one resource configuration information among the resource configuration information of the multiple dedicated search spaces;

[0456] Step 1602: The terminal determines the resource configuration information of the dedicated search space for transmitting small data according to the received indication information;

[0457] Step 1603: The terminal and the base station determine the CORESET corresponding to the dedicated search space according to the one resource configuration information;

[0458] Step 1604: Inside the CORESET, the terminal and the base station use the RNTI of the terminal as the randomization parameter of the hash function, and based on the hash function, according to the AL of the dedicated search space and the number of PDCCH candidates corresponding to the AL, determine the PDCCH resources for transmitting the small data in the search space;

[0459] Step 1605a: After the terminal receives msg4 and before receiving the configuration signaling of USS or type3 PDCCH, the terminal starts listening to the PDCCH resources, and the base station starts sending DCI, where the DCI is carried by the PDCCH resources; or,

[0460] Step 1605b: After the terminal receives msgB and before receiving the configuration signaling of USS or type 3 PDCCH, the terminal starts to monitor the PDCCH resource, and the base station starts to send DCI, where the DCI is carried by the PDCCH resource;

[0461] Step 1606: After the terminal receives the resource configuration information of USS or type 3 CSS sent by the base station, the terminal stops monitoring the PDCCH resource, and the base station stops sending DCI, where the DCI is carried by the PDCCH resource.

[0462] As Figure 17A 、 Figure 17B shown, this embodiment provides a method for a base station and a terminal to determine the resource configuration information of a part of a predefined dedicated search space in advance, and for the base station to send the resource configuration information of the remaining part of the dedicated search space to the terminal through SIB1. The specific implementation steps are as follows:

[0463] Step 1700: Before the terminal enters the connected state, the terminal and the base station determine the resource configuration information of the first part of a dedicated search space for transmitting small data according to the predefined resource configuration information of the first part of a dedicated search space;

[0464] Step 1701: The base station broadcasts the resource configuration information of the second part of a dedicated search space to the terminal through SIB1;

[0465] Step 1702: The base station and the terminal determine the resource configuration information of the dedicated search space for transmitting small data according to the predefined resource configuration information of the first part and the second part;

[0466] Step 1703: The terminal and the base station determine the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0467] Step 1704: In the CORESET, the terminal and the base station use the RNTI of the terminal as the randomization parameter of the hash function, and based on the hash function, according to the AL of the dedicated search space and the number of PDCCH candidates corresponding to the AL, determine the PDCCH resource for transmitting small data in the search space;

[0468] Step 1705a: After the terminal receives msg4 and before receiving the configuration signaling of USS or type 3 PDCCH, the terminal starts to monitor the PDCCH resource, and the base station starts to send DCI, where the DCI is carried by the PDCCH resource; or,

[0469] Step 1705b: After the terminal receives msgB and before receiving the configuration signaling of USS or type 3 PDCCH, the terminal starts to monitor the PDCCH resources, and the base station starts to send DCI, where the DCI is carried by the PDCCH resources;

[0470] Step 1706: After the terminal receives the resource configuration information of USS or type 3 CSS sent by the base station, the terminal stops monitoring the PDCCH resources, and the base station stops sending DCI, where the DCI is carried by the PDCCH resources;

[0471] Or,

[0472] After the terminal receives the RRC release signaling sent by the base station, the terminal stops monitoring the PDCCH resources, and the base station stops sending DCI, where the DCI is carried by the PDCCH resources.

[0473] As Figure 18A 、 Figure 18B shown, this embodiment provides a method for a base station and a terminal to determine the resource configuration information of a part of a dedicated search space in advance, and for the base station to send the resource configuration information of the remaining part of the dedicated search space to the terminal through RRC signaling. The specific implementation steps are as follows:

[0474] Step 1800: Before the terminal enters the connected state, the terminal and the base station determine the resource configuration information of the first part of a dedicated search space for transmitting small data according to the pre-defined resource configuration information of the first part of a dedicated search space;

[0475] Step 1801: The base station sends the resource configuration information of the second part of a dedicated search space to the terminal through RRC signaling;

[0476] Step 1802: The base station and the terminal determine the resource configuration information of the dedicated search space for transmitting small data according to the pre-defined resource configuration information of the first part and the resource configuration information of the second part;

[0477] Step 1803: The terminal and the base station determine the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0478] Step 1804: In the CORESET, the terminal and the base station use the RNTI of the terminal as the randomization parameter of the hash function, and based on the hash function, according to the AL of the dedicated search space and the number of PDCCH candidates corresponding to the AL, determine the PDCCH resources for transmitting the small data in the search space;

[0479] Step 1805a: After the terminal receives msg4 and before receiving the configuration signaling of USS or type 3 PDCCH, the terminal starts to monitor the PDCCH resource, and the base station starts to send DCI, where the DCI is carried by the PDCCH resource; or,

[0480] Step 1805b: After the terminal receives msgB and before receiving the configuration signaling of USS or type 3 PDCCH, the terminal starts to monitor the PDCCH resource, and the base station starts to send DCI, where the DCI is carried by the PDCCH resource;

[0481] Step 1806: After the terminal receives the resource configuration information of USS or type 3 CSS sent by the base station, the terminal stops monitoring the PDCCH resource, and the base station stops sending DCI, where the DCI is carried by the PDCCH resource.

[0482] Embodiment 4: Based on the same inventive concept, an embodiment of the present invention further provides a resource allocation terminal for small data transmission. Since this terminal is the terminal corresponding to the method of the embodiment of the present invention, and the principle of this terminal to solve problems is similar to that of the method, the implementation of this terminal can refer to the implementation of the method, and the repeated parts will not be described again.

[0483] As Figure 19 shown, an embodiment of the present invention further provides a resource allocation terminal for small data transmission, and this terminal includes: a memory, a transceiver, and a processor:

[0484] On the terminal side, before entering the connected state, determine the resource configuration information of the dedicated search space for transmitting small data, where the small data is used to represent data with a data volume less than a threshold;

[0485] According to the resource configuration information of the dedicated search space, determine the physical downlink control channel PDCCH resource for transmitting the small data.

[0486] The memory 1920 is used to store computer programs;

[0487] The transceiver 1900 is used to receive and send data under the control of the processor 1910.

[0488] Among them, in Figure 19Among them, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 1910 and memory represented by memory 1920. 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 thus will not be further described herein. The bus interface provides an interface. The transceiver 1900 may be multiple components, that is, including a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, and these transmission mediums include wireless channels, wired channels, optical fiber cables, and other transmission mediums. For different user devices, the user interface 1930 may also be an interface capable of externally or internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

[0489] The processor 1910 is responsible for managing the bus architecture and general processing, and the memory 1920 may store data used by the processor 1910 when executing operations.

[0490] Optionally, the processor 1910 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0491] The processor is used to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and the memory may also be physically separated.

[0492] As an optional implementation manner, the processor is specifically configured to execute:

[0493] Determine the resource configuration information of the dedicated search space for transmitting small data according to the resource configuration information of at least one predefined dedicated search space; and / or,

[0494] Determine the resource configuration information of the dedicated search space for transmitting small data according to the received indication signaling carrying the resource configuration information of at least one dedicated search space, where the indication signaling includes broadcast signaling or dedicated signaling.

[0495] As an optional implementation manner, there are multiple pieces of resource configuration information of the dedicated search space, and each piece of resource configuration information corresponds to a unique resource configuration information number;

[0496] The processor is specifically configured to execute:

[0497] Determine, according to the mapping relationship between the random access opportunity RO number selected based on the transmitted random access preamble preamble and the resource configuration information number, the resource configuration information corresponding to the RO number from the multiple resource configuration information; or,

[0498] Determine, according to the mapping relationship between the received synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number, the resource configuration information corresponding to the SSB index value from the multiple resource configuration information; or,

[0499] Determine, according to the indication information carried in the received contention resolution message Msg4 or MsgB, the resource configuration information corresponding to the indication information from the multiple resource configuration information.

[0500] As an optional implementation manner, the resource configuration information includes any one or any combination of the following:

[0501] The aggregation level AL of the dedicated search space;

[0502] The number of PDCCH candidates candidate corresponding to each AL of the dedicated search space;

[0503] The blind detection period parameter of the dedicated search space;

[0504] The control resource set CORESET corresponding to the dedicated search space.

[0505] As an optional implementation manner, the processor is specifically configured to execute:

[0506] Determine the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0507] Within the CORESET, determine the PDCCH resource according to the radio network temporary identity RNTI of the terminal, the AL of the dedicated search space, and the number of PDCCH candidates corresponding to the AL, where the RNTI includes a temporary cell radio network temporary identity TC-RNTI or a cell radio network temporary identity C-RNTI.

[0508] As an optional implementation manner, the processor is specifically configured to execute:

[0509] Use the RNTI as the randomization parameter of the hash function, and based on the hash function, determine the PDCCH resource for transmitting the small data within the search space according to the AL and the number of PDCCH candidates corresponding to the AL.

[0510] As an alternative implementation manner, after determining the PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space, the processor is further specifically configured to perform:

[0511] Detect the downlink control information DCI for receiving the small data within the dedicated search space, where the cyclic redundancy check CRC of the DCI is scrambled by the C-RNTI of the terminal.

[0512] As an alternative implementation manner, after determining the physical downlink control channel PDCCH resources for transmitting the small data, the processor is further specifically configured to perform:

[0513] After receiving Msg2 or Msg4 or MsgB, start listening to the PDCCH resources; or,

[0514] Before sending Msg1 or Msg3 or MsgA, start listening to the PDCCH resources.

[0515] As an alternative implementation manner, after determining the physical downlink control channel PDCCH resources for transmitting the small data, the processor is further specifically configured to perform:

[0516] After receiving the radio resource control RRC release signaling, stop listening to the PDCCH resources; or,

[0517] After receiving the resource configuration information of the user-specific search space USS and / or the type 3 common search space CSS, stop listening to the PDCCH resources.

[0518] As an alternative implementation manner, after determining the PDCCH resources for transmitting the small data before initially entering the connected state, the processor is further specifically configured to perform:

[0519] Before the next entry into the connected state, transmit the small data according to the PDCCH resources determined before initially entering the connected state.

[0520] As an alternative implementation manner, after the current entry into the connected state and before the next entry into the connected state, the processor is further specifically configured to perform:

[0521] Transmit the small data according to the resource configuration information determined after the current entry into the connected state; or,

[0522] Transmit the small data according to the received indication signaling, where the indication signaling is used to instruct the terminal to transmit the small data according to the resource configuration information determined after the current entry into the connected state.

[0523] It should be noted here that the above terminal provided by the embodiment of the present invention can implement all the method steps implemented by the above method embodiment and can achieve the same technical effects. Therefore, the same parts and beneficial effects as those in the method embodiment in this embodiment will not be specifically described herein.

[0524] Embodiment 5: Based on the same inventive concept, the embodiment of the present invention also provides a network-side device for resource allocation of small data transmission. Since this device is the device corresponding to the method of the embodiment of the present invention and the principle of solving problems by this device is similar to that of the method, the implementation of this device can refer to the implementation of the method, and the repeated parts will not be described again.

[0525] As Figure 20 shown, the embodiment of the present invention also provides a network-side device for resource allocation of small data transmission. This device includes: a memory 2020, a transceiver 2000, and a processor 2010:

[0526] On the network device side, before determining that the terminal enters the connected state, it is used to determine the resource configuration information of the dedicated search space for transmitting the small data of the terminal, where the small data is used to represent data with a data volume less than a threshold;

[0527] According to the resource configuration information of the dedicated search space, determine the physical downlink control channel PDCCH resources for transmitting the small data.

[0528] The memory 2020 is used to store computer programs;

[0529] The transceiver 2000 is used to receive and send data under the control of the processor 2010.

[0530] Among them, in Figure 20 the bus architecture may include any number of interconnected buses and bridges. Specifically, various circuits represented by one or more processors represented by the processor 2010 and a memory represented by the memory 2020 are linked together. 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. Therefore, they will not be further described herein. The bus interface provides an interface. The transceiver 2000 may be multiple elements, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium, and these transmission mediums include wireless channels, wired channels, optical fiber cables, and other transmission mediums. The processor 2010 is responsible for managing the bus architecture and general processing, and the memory 2020 can store the data used by the processor 2010 when performing operations.

[0531] The processor 2010 may 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 may also adopt a multi-core architecture.

[0532] As an alternative implementation, the processor is specifically configured to execute:

[0533] Determine the resource configuration information of the dedicated search space for transmitting the small data of the terminal according to the resource configuration information of at least one predefined dedicated search space.

[0534] As an alternative implementation, there are multiple pieces of the resource configuration information of the dedicated search space, and each resource configuration information corresponds to a unique resource configuration information number;

[0535] The processor is specifically configured to execute:

[0536] Determine the resource configuration information corresponding to the RO number from the multiple pieces of resource configuration information according to the mapping relationship between the received random access opportunity RO number and the resource configuration information number; or,

[0537] Determine the resource configuration information corresponding to the SSB index value from the multiple pieces of resource configuration information according to the mapping relationship between the synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number; or,

[0538] Determine the resource configuration information from the multiple pieces of resource configuration information by itself.

[0539] As an alternative implementation, the resource configuration information includes any one or more of the following:

[0540] The aggregation level AL of the dedicated search space;

[0541] The number of PDCCH candidate sets candidate corresponding to each AL of the dedicated search space;

[0542] The blind detection period parameter of the dedicated search space;

[0543] The control resource set CORESET corresponding to the dedicated search space.

[0544] As an alternative implementation, the processor is specifically configured to execute:

[0545] Determine the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0546] Within the CORESET, determine the PDCCH resources according to the determined RNTI of the terminal, the AL of the dedicated search space, and the number of PDCCH candidates corresponding to the AL, where the radio network temporary identifier RNTI includes a temporary cell radio network temporary identifier TC-RNTI or a cell radio network temporary identifier C-RNTI.

[0547] As an optional implementation manner, the processor is specifically configured to execute:

[0548] Use the RNTI as the randomization parameter of the hash function, and based on the hash function, determine the PDCCH resources for transmitting small data within the search space according to the AL and the number of PDCCH candidates corresponding to the AL.

[0549] As an optional implementation manner, after determining the resource configuration information of the dedicated search space for transmitting the small data of the terminal, the processor is specifically further configured to execute:

[0550] Send the at least one resource configuration information to the terminal through a signaling message, where the signaling message includes a broadcast signaling message or a dedicated signaling message; or,

[0551] Send the at least one resource configuration information to the terminal through a contention resolution message Msg4 or MsgB.

[0552] As an optional implementation manner, after determining the PDCCH resources for transmitting the small data, the processor is specifically further configured to execute:

[0553] Send the downlink control information DCI of the small data within the dedicated search space, where the cyclic redundancy check CRC of the DCI is scrambled by the C-RNTI of the terminal.

[0554] As an optional implementation manner, after determining the PDCCH resources for transmitting the small data, the processor is specifically further configured to execute:

[0555] After sending Msg2 or Msg4 or MsgB, start sending DCI, where the DCI is carried by the PDCCH resources; or,

[0556] After receiving Msg1 or Msg3 or MsgA, start sending DCI, where the DCI is carried by the PDCCH resources.

[0557] As an alternative embodiment, after determining the PDCCH resources for transmitting the small data, the processor is further specifically configured to perform:

[0558] After sending a Radio Resource Control (RRC) release signaling, stop sending Downlink Control Information (DCI), where the DCI is carried by the PDCCH resources; or,

[0559] After sending resource configuration information of a User-Specific Search Space (USS) and / or a Type 3 Common Search Space (CSS), stop sending DCI, where the DCI is carried by the PDCCH resources.

[0560] As an alternative embodiment, before determining that the terminal initially enters the connected state and after determining the PDCCH resources for transmitting the small data, the processor is further specifically configured to perform:

[0561] Determine that before the terminal next enters the connected state, transmit the small data according to the PDCCH resources determined before the initial entry into the connected state.

[0562] As an alternative embodiment, after determining that the terminal enters the connected state this time and before the next entry into the connected state, the processor is further specifically configured to perform:

[0563] Transmit the small data according to the resource configuration information determined after the terminal enters the connected state this time; and / or,

[0564] Send an indication signaling for indicating that before the terminal next enters the connected state, transmit the small data according to the resource configuration information determined after the entry into the connected state this time.

[0565] It should be noted here that the above device provided in the embodiments of the present invention can implement all the method steps implemented in the above method embodiments and can achieve the same technical effects. The same parts and beneficial effects as those in the method embodiments are not specifically described in this embodiment.

[0566] Embodiment 6. Based on the same inventive concept, an apparatus for resource allocation for small data transmission is further provided in the embodiments of the present invention. Since this apparatus corresponds to the method in the embodiments of the present invention and the principle of solving problems by this apparatus is similar to that of the method, the implementation of this apparatus can refer to the implementation of the method, and the repeated parts are not described again.

[0567] It should be noted that the division of units in the embodiments of the present application is illustrative, merely a logical function division, and there may be other division methods in actual implementation. Additionally, in each embodiment of the present application, the various functional units may be integrated in a processing unit, may exist separately physically for each unit, or two or more units may be integrated in one unit. The above-mentioned integrated units may be implemented in the form of hardware or in the form of software functional units.

[0568] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0569] As Figure 21 shown, the device includes:

[0570] A resource configuration determination unit 2100, configured to determine resource configuration information of a dedicated search space for transmitting small data before entering the connected state, where the small data is used to represent data with a data volume less than a threshold;

[0571] A transmission resource determination unit 2101, configured to determine physical downlink control channel PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space.

[0572] As an optional implementation manner, the resource configuration determination unit is specifically configured to:

[0573] Determine resource configuration information of a dedicated search space for transmitting small data according to resource configuration information of at least one predefined dedicated search space; and / or,

[0574] Determine resource configuration information of a dedicated search space for transmitting small data according to a received explicit signaling carrying resource configuration information of at least one dedicated search space, where the explicit signaling includes broadcast signaling or dedicated signaling.

[0575] As an alternative implementation, there are multiple pieces of resource configuration information for the dedicated search space, and each piece of resource configuration information corresponds to a unique resource configuration information number;

[0576] The determining resource configuration unit is specifically configured to:

[0577] Determine the resource configuration information corresponding to the RO number from the multiple pieces of resource configuration information according to the mapping relationship between the random access occasion RO number selected for sending the random access preamble preamble and the resource configuration information number; or,

[0578] Determine the resource configuration information corresponding to the SSB index value from the multiple pieces of resource configuration information according to the mapping relationship between the received synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number; or,

[0579] Determine the resource configuration information corresponding to the indication information from the multiple pieces of resource configuration information according to the indication information carried in the received contention resolution message Msg4 or MsgB.

[0580] As an alternative implementation, the resource configuration information includes any one or more of the following:

[0581] The aggregation level AL of the dedicated search space;

[0582] The number of PDCCH candidate sets candidate corresponding to each AL of the dedicated search space;

[0583] The blind detection period parameter of the dedicated search space;

[0584] The control resource set CORESET corresponding to the dedicated search space.

[0585] As an alternative implementation, the determining transmission resource unit is specifically configured to:

[0586] Determine the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0587] Within the CORESET, determine the PDCCH resource according to the radio network temporary identity RNTI of the terminal, the AL of the dedicated search space, and the number of PDCCH candidate corresponding to the AL, where the RNTI includes a temporary cell radio network temporary identity TC-RNTI or a cell radio network temporary identity C-RNTI.

[0588] As an alternative implementation, the determining transmission resource unit is specifically configured to:

[0589] Using the RNTI as a randomization parameter of a hash function, based on the hash function, determine the PDCCH resources for transmitting the small data within the search space according to the AL and the number of PDCCH candidates corresponding to the AL.

[0590] As an optional implementation manner, after determining the PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space, the determining transmission resource unit is specifically further configured to:

[0591] Detect and receive the downlink control information DCI for the small data within the dedicated search space, where the cyclic redundancy check CRC of the DCI is scrambled by the C-RNTI of the terminal.

[0592] As an optional implementation manner, after determining the physical downlink control channel PDCCH resources for transmitting the small data, the determining transmission resource unit is specifically further configured to:

[0593] After receiving Msg2 or Msg4 or MsgB, start listening to the PDCCH resources; or,

[0594] Before sending Msg1 or Msg3 or MsgA, start listening to the PDCCH resources.

[0595] As an optional implementation manner, after determining the physical downlink control channel PDCCH resources for transmitting the small data, the determining transmission resource unit is specifically further configured to:

[0596] After receiving the radio resource control RRC release signaling, stop listening to the PDCCH resources; or,

[0597] After receiving the resource configuration information of the user dedicated search space USS and / or the type 3 common search space CSS, stop listening to the PDCCH resources.

[0598] As an optional implementation manner, after determining the PDCCH resources for transmitting the small data before initially entering the connected state, the determining transmission resource unit is specifically further configured to:

[0599] Before the next entry into the connected state, transmit the small data according to the PDCCH resources determined before initially entering the connected state.

[0600] As an optional implementation manner, after the current entry into the connected state and before the next entry into the connected state, the determining transmission resource unit is specifically further configured to:

[0601] Transmit the small data according to the resource configuration information determined after the current entry into the connected state; or,

[0602] Transmit the small data according to the received indication signaling, where the indication signaling is used to instruct the terminal to transmit the small data according to the resource configuration information determined after entering the connected state this time.

[0603] It should be noted here that the above device provided in the embodiments of the present invention can implement all the method steps implemented in the above method embodiments, and can achieve the same technical effects. Therefore, the same parts and beneficial effects as those in the method embodiments will not be specifically described in this embodiment.

[0604] Embodiment 7: Based on the same inventive concept, an apparatus for resource allocation for small data transmission is further provided in the embodiments of the present invention. Since this apparatus corresponds to the method in the embodiments of the present invention, and the principle of solving problems by this apparatus is similar to that of the method, the implementation of this apparatus can refer to the implementation of the method, and the repeated parts will not be described again.

[0605] It should be noted that the division of units in the embodiments of the present application is illustrative, only a logical function division, and there may be other division methods in actual implementation. In addition, in each embodiment of the present application, each functional unit can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0606] If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of this 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 enable a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0607] As Figure 22 shown, the apparatus includes:

[0608] Determine a resource configuration unit 2200, which is used to determine resource configuration information of a dedicated search space for transmitting small data of the terminal before determining that the terminal enters the connected state, where the small data is used to characterize data with a data volume smaller than a threshold;

[0609] Determine a resource transmission unit 2201, which is used to determine physical downlink control channel PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space.

[0610] As an optional implementation manner, the resource configuration unit is specifically used for:

[0611] Determine resource configuration information of a dedicated search space for transmitting small data of the terminal according to resource configuration information of at least one predefined dedicated search space.

[0612] As an optional implementation manner, there are multiple pieces of resource configuration information of the dedicated search space, and each piece of resource configuration information corresponds to a unique resource configuration information number;

[0613] The resource configuration unit is specifically used for:

[0614] Determine resource configuration information corresponding to the RO number from the multiple pieces of resource configuration information according to the mapping relationship between the received random access opportunity RO number and the resource configuration information number; or,

[0615] Determine resource configuration information corresponding to the SSB index value from the multiple pieces of resource configuration information according to the mapping relationship between the synchronization signal and physical broadcast channel block SSB index value and the resource configuration information number; or,

[0616] Determine resource configuration information from the multiple pieces of resource configuration information by itself.

[0617] As an optional implementation manner, the resource configuration information includes any one or any combination of the following:

[0618] The aggregation level AL of the dedicated search space;

[0619] The number of PDCCH candidates candidate corresponding to each AL of the dedicated search space;

[0620] The blind detection period parameter of the dedicated search space;

[0621] The control resource set CORESET corresponding to the dedicated search space.

[0622] As an optional implementation manner, the resource transmission unit is specifically used for:

[0623] Determine the CORESET corresponding to the dedicated search space according to the resource configuration information;

[0624] Within the CORESET, determine the PDCCH resource according to the determined RNTI of the terminal, the AL of the dedicated search space, and the number of PDCCH candidates corresponding to the AL, where the radio network temporary identifier RNTI includes a temporary cell radio network temporary identifier TC-RNTI or a cell radio network temporary identifier C-RNTI.

[0625] As an alternative implementation, the determining resource transmission unit is specifically configured to:

[0626] Use the RNTI as a randomization parameter of the hash function, and determine the PDCCH resource for transmitting the small data within the search space based on the hash function according to the AL and the number of PDCCH candidates corresponding to the AL.

[0627] As an alternative implementation, after determining the resource configuration information of the dedicated search space for transmitting the small data of the terminal, the determining resource transmission unit is further specifically configured to:

[0628] Send the at least one resource configuration information to the terminal through explicit signaling, where the explicit signaling includes broadcast signaling or dedicated signaling; or,

[0629] Send the at least one resource configuration information to the terminal through a contention resolution message Msg4 or MsgB.

[0630] As an alternative implementation, after determining the PDCCH resource for transmitting the small data, the determining resource transmission unit is further specifically configured to:

[0631] Send the downlink control information DCI of the small data within the dedicated search space, where the cyclic redundancy check CRC of the DCI is scrambled by the C-RNTI of the terminal.

[0632] As an alternative implementation, after determining the PDCCH resource for transmitting the small data, the determining resource transmission unit is further specifically configured to:

[0633] Start sending DCI after sending Msg2 or Msg4 or MsgB, where the DCI is carried by the PDCCH resource; or,

[0634] Start sending DCI after receiving Msg1 or Msg3 or MsgA, where the DCI is carried by the PDCCH resource.

[0635] As an alternative implementation, after determining the PDCCH resources for transmitting the small data, the resource determination and transmission unit is further specifically configured to:

[0636] After sending a Radio Resource Control (RRC) release signaling, stop sending Downlink Control Information (DCI), where the DCI is carried by the PDCCH resources; or,

[0637] After sending resource configuration information of a User-Specific Search Space (USS) and / or a Type 3 Common Search Space (CSS), stop sending DCI, where the DCI is carried by the PDCCH resources.

[0638] As an alternative implementation, before determining that the terminal enters the connected state for the first time and after determining the PDCCH resources for transmitting the small data, the resource determination and transmission unit is further specifically configured to:

[0639] Determine that before the terminal enters the connected state next time, transmit the small data according to the PDCCH resources determined before entering the connected state for the first time.

[0640] As an alternative implementation, after determining that the terminal enters the connected state this time and before entering the connected state next time, the resource determination and transmission unit is further specifically configured to:

[0641] Transmit the small data according to the resource configuration information determined after the terminal enters the connected state this time; and / or,

[0642] Send an indication signaling for indicating that before the terminal enters the connected state next time, transmit the small data according to the resource configuration information determined after entering the connected state this time.

[0643] It should be noted here that the above device provided in the embodiments of the present invention can implement all the method steps implemented in the above method embodiments and can achieve the same technical effects. The same parts and beneficial effects as those in the method embodiments will not be specifically described in this embodiment.

[0644] This embodiment further provides a computer storage medium. The processor-readable storage medium can be any available medium or data storage device accessible by the processor, including but not limited to magnetic memories (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical memories (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor memories (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid-state drives (SSD)).

[0645] This embodiment also provides a computer storage medium. When the program is executed by a processor, the steps of the following method are implemented:

[0646] Before entering the connected state, determine the resource configuration information of the dedicated search space for transmitting small data, where the small data is used to represent data with a data volume less than a threshold;

[0647] According to the resource configuration information of the dedicated search space, determine the physical downlink control channel PDCCH resources for transmitting the small data.

[0648] This embodiment also provides a computer storage medium. The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memories (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical memories (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor memories (such as ROM, EPROM, EEPROM, non-volatile memories (NAND FLASH), solid-state drives (SSD)).

[0649] This embodiment also provides a computer storage medium. When the program is executed by a processor, the steps of the following method are implemented:

[0650] Before determining that the terminal enters the connected state, determine the resource configuration information of the dedicated search space for transmitting the small data of the terminal, where the small data is used to represent data with a data volume less than a threshold;

[0651] According to the resource configuration information of the dedicated search space, determine the physical downlink control channel PDCCH resources for transmitting the small data.

[0652] The present application is described above with reference to the block diagrams and / or flowcharts showing methods, apparatuses (systems) and / or computer program products according to embodiments of the present application. It should be understood that the functions / operations specified in the blocks of the block diagrams and / or flowcharts can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, and / or other programmable data processing devices to generate a machine, so that the instructions executed by the computer processor and / or other programmable data processing devices create a method for implementing the functions / operations specified in the blocks of the block diagrams and / or flowcharts.

[0653] Accordingly, the present application may also be implemented by hardware and / or software, including firmware, resident software, microcode, etc. Further, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of the present application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

[0654] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A resource allocation method for small data transmission, characterized in that The method includes: Before entering the connected state, the terminal determines the resource configuration information of the dedicated search space for transmitting small data, including: the terminal determines the resource configuration information of a first part of a dedicated search space for transmitting small data according to the resource configuration information of a first part of multiple predefined dedicated search spaces; the terminal determines the resource configuration information of a second part of a dedicated search space for transmitting small data according to the indication signaling carried in the received indication message carrying the resource configuration information of a second part of multiple dedicated search spaces, where the resource configuration information of the dedicated search space includes: the resource configuration information of the first part and the resource configuration information of the second part; the indication signaling includes broadcast signaling or dedicated signaling; where the small data is used to characterize data with a data volume less than a threshold; There are multiple pieces of resource configuration information for the dedicated search space, and each piece of resource configuration information corresponds to a unique resource configuration information number; the terminal determines the resource configuration information of the dedicated search space for transmitting small data, including: the terminal determines the resource configuration information corresponding to the RO number from the multiple pieces of resource configuration information according to the mapping relationship between the random access occasion RO number selected by transmitting the random access preamble preamble and the resource configuration information number; or, the terminal determines the resource configuration information corresponding to the SSB index value from the multiple pieces of resource configuration information according to the mapping relationship between the received synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number; or, the terminal determines the resource configuration information corresponding to the indication information from the multiple pieces of resource configuration information according to the indication information carried in the received contention resolution message Msg4 or MsgB; The terminal determines the physical downlink control channel PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space.

2. The method according to claim 1, wherein The resource configuration information includes any one or any combination of the following: The aggregation level AL of the dedicated search space; The number of PDCCH candidates candidate corresponding to each AL of the dedicated search space; The blind detection period parameter of the dedicated search space; The control resource set CORESET corresponding to the dedicated search space.

3. The method according to claim 1, wherein The terminal determines the PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space, including: The terminal determines the CORESET corresponding to the dedicated search space according to the resource configuration information; The terminal determines the PDCCH resources within the CORESET according to the radio network temporary identity RNTI of the terminal, the AL of the dedicated search space, and the number of PDCCH candidates candidate corresponding to the AL, where the RNTI includes a temporary cell radio network temporary identity TC-RNTI or a cell radio network temporary identity C-RNTI.

4. The method according to claim 3, wherein The terminal determines the PDCCH resources, including: The terminal uses the RNTI as a randomization parameter of the hash function, and based on the hash function, determines the PDCCH resources for transmitting the small data within the search space according to the AL and the number of PDCCH candidates corresponding to the AL.

5. The method according to claim 1, wherein After the terminal determines the PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space, it further includes: The terminal detects and receives the downlink control information DCI for the small data within the dedicated search space, where the cyclic redundancy check CRC of the DCI is scrambled by the C-RNTI of the terminal.

6. The method according to claim 1, characterized in that, After the terminal determines the physical downlink control channel PDCCH resources for transmitting the small data, it further includes: The terminal starts listening to the PDCCH resources after receiving Msg2 or Msg4 or MsgB; or, The terminal starts listening to the PDCCH resources before sending Msg1 or Msg3 or MsgA.

7. The method according to claim 1, wherein After the terminal determines the physical downlink control channel PDCCH resources for transmitting the small data, it further includes: The terminal stops listening to the PDCCH resources after receiving the radio resource control RRC release signaling; or, The terminal stops listening to the PDCCH resources after receiving the resource configuration information of the user-specific search space USS and / or the type 3 common search space CSS.

8. The method according to claim 1, wherein After the terminal determines the PDCCH resources for transmitting the small data before initially entering the connected state, it further includes: Before the terminal next enters the connected state, it transmits the small data according to the PDCCH resources determined before initially entering the connected state.

9. The method according to claim 1, wherein After the terminal enters the connected state this time and before entering the connected state next time, it further includes: The terminal transmits the small data according to the resource configuration information determined after entering the connected state this time; or, The terminal transmits the small data according to the received indication signaling, where the indication signaling is used to instruct the terminal to transmit the small data according to the resource configuration information determined after entering the connected state this time.

10. A resource allocation method for small data transmission, characterized in that, The method includes: Before determining that the terminal enters the connected state, the base station determines resource configuration information for a dedicated search space for transmitting small data of the terminal, including: the base station determines resource configuration information for a dedicated search space for transmitting small data of the terminal according to predefined resource configuration information of multiple dedicated search spaces; after the base station determines the resource configuration information for the dedicated search space for transmitting small data of the terminal, it further includes: sending the at least one resource configuration information to the terminal through explicit signaling, where the explicit signaling includes broadcast signaling or dedicated signaling; there are multiple pieces of resource configuration information for the dedicated search space, and each piece of resource configuration information corresponds to a unique resource configuration information number; the base station determines the resource configuration information for the dedicated search space for transmitting small data of the terminal, including: the base station determines the resource configuration information corresponding to the RO number from the multiple pieces of resource configuration information according to the mapping relationship between the received random access opportunity RO number and the resource configuration information number; or, the base station determines the resource configuration information corresponding to the SSB index value from the multiple pieces of resource configuration information according to the mapping relationship between the synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number; or, the base station itself determines the resource configuration information from the multiple pieces of resource configuration information; where the small data is used to represent that the data volume is less than the threshold data; The base station determines the physical downlink control channel PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space.

11. The method according to claim 10, characterized in that, The resource configuration information includes any one or any combination of the following: The aggregation level AL of the dedicated search space; The number of PDCCH candidates candidate corresponding to each AL of the dedicated search space; The blind detection period parameter of the dedicated search space; The control resource set CORESET corresponding to the dedicated search space.

12. The method according to claim 10, characterized in that The base station determines the PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space, including: The base station determines the CORESET corresponding to the dedicated search space according to the resource configuration information; Within the CORESET, the base station determines the PDCCH resources according to the determined RNTI of the terminal, the AL of the dedicated search space, and the number of PDCCH candidates corresponding to the AL, where the radio network temporary identity RNTI includes a temporary cell radio network temporary identity TC-RNTI or a cell radio network temporary identity C-RNTI.

13. The method according to claim 12, characterized in that, The base station determines the PDCCH resources, including: The base station uses the RNTI as a randomization parameter of the hash function, and based on the hash function, determines the PDCCH resources for transmitting the small data within the search space according to the AL and the number of PDCCH candidates corresponding to the AL.

14. The method according to claim 10, wherein After the base station determines the resource configuration information for the dedicated search space for transmitting small data of the terminal, it further includes: The base station sends the at least one resource configuration information to the terminal through a signaling indication, where the signaling indication includes a broadcast signaling or a dedicated signaling; or, The base station sends the at least one resource configuration information to the terminal through a contention resolution message Msg4 or MsgB.

15. The method according to claim 10, wherein After the base station determines the PDCCH resource for transmitting the small data, it further includes: The base station sends the downlink control information DCI of the small data in the dedicated search space, where the cyclic redundancy check CRC of the DCI is scrambled by the C-RNTI of the terminal.

16. The method according to claim 10, wherein After the base station determines the PDCCH resource for transmitting the small data, it further includes: After the base station sends Msg2 or Msg4 or MsgB, it starts to send the downlink control information DCI, where the DCI is carried by the PDCCH resource; or, After the base station receives Msg1 or Msg3 or MsgA, it starts to send the DCI, where the DCI is carried by the PDCCH resource.

17. The method according to claim 10, characterized in that, After the base station determines the PDCCH resource for transmitting the small data, it further includes: After the base station sends a radio resource control RRC release signaling, it stops sending the DCI, where the DCI is carried by the PDCCH resource; or, After the base station sends the resource configuration information of the user specific search space USS and / or the type3 common search space CSS, it stops sending the DCI, where the DCI is carried by the PDCCH resource.

18. The method according to claim 10, characterized in that, Before the base station determines that the terminal initially enters the connected state, after determining the PDCCH resource for transmitting the small data, it further includes: The base station determines that before the terminal next enters the connected state, the small data is transmitted according to the PDCCH resource determined before the initial entry into the connected state.

19. The method according to claim 10, characterized in that After the base station determines that the terminal enters the connected state this time and before the next entry into the connected state, it further includes: The base station transmits the small data according to the resource configuration information determined after the terminal enters the connected state this time; and / or, The base station sends an indication signaling, where the indication signaling is used to indicate that before the terminal next enters the connected state, the small data is transmitted according to the resource configuration information determined after the entry into the connected state this time.

20. A resource allocation terminal for small data transmission, characterized in that Including a memory, a transceiver, and a processor: The memory is used to store a computer program; the transceiver is used to transmit and receive data under the control of the processor; The processor is used to read the computer program in the memory and perform the following operations: Before entering the connected state, determine the resource configuration information of the dedicated search space for transmitting small data, including: the terminal determines the resource configuration information of the first part of a dedicated search space for transmitting small data according to the resource configuration information of the first part of multiple predefined dedicated search spaces; the terminal determines the resource configuration information of the second part of a dedicated search space for transmitting small data according to the indication signaling carrying the resource configuration information of the second part of multiple dedicated search spaces, where the resource configuration information of a dedicated search space includes: the resource configuration information of the first part and the resource configuration information of the second part; the indication signaling includes broadcast signaling or dedicated signaling; where the small data is used to represent data with a data volume less than a threshold and that needs to be continuously transmitted; There are multiple resource configuration information of the dedicated search space, and each resource configuration information corresponds to a unique resource configuration information number; the terminal determines the resource configuration information of the dedicated search space for transmitting small data, including: the terminal determines the resource configuration information corresponding to the RO number from the multiple resource configuration information according to the mapping relationship between the random access occasion RO number selected by sending the random access preamble preamble and the resource configuration information number; or, the terminal determines the resource configuration information corresponding to the SSB index value from the multiple resource configuration information according to the mapping relationship between the received synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number; or, the terminal determines the resource configuration information corresponding to the indication information from the multiple resource configuration information according to the indication information carried in the received contention resolution message Msg4 or MsgB; Determine the physical downlink control channel PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space.

21. A network side device for resource allocation in small data transmission, characterized in that, Including a memory, a transceiver, and a processor: The memory is used to store computer programs; the transceiver is used to transmit and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations: Before determining that the terminal enters the connected state, determine the resource configuration information of the dedicated search space for transmitting the small data of the terminal, including: determining the resource configuration information of a dedicated search space for transmitting the small data of the terminal according to the resource configuration information of a plurality of predefined dedicated search spaces; after determining the resource configuration information of the dedicated search space for transmitting the small data of the terminal, further including: sending the at least one resource configuration information to the terminal through a signaling message, where the signaling message includes a broadcast signaling message or a dedicated signaling message; the resource configuration information of the dedicated search space is multiple, and each resource configuration information corresponds to a unique resource configuration information number; determining the resource configuration information of the dedicated search space for transmitting the small data of the terminal includes: determining the resource configuration information corresponding to the RO number from the multiple resource configuration information according to the mapping relationship between the received random access occasion RO number and the resource configuration information number; or, determining the resource configuration information corresponding to the SSB index value from the multiple resource configuration information according to the mapping relationship between the synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number; or, determining the resource configuration information from the multiple resource configuration information by itself; where the small data is used to characterize data with a data volume less than a threshold and that needs to be continuously transmitted; Determine the physical downlink control channel PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space.

22. A resource allocation device for small data transmission, characterized in that Including: Determine a resource configuration unit, which is used to determine resource configuration information of a dedicated search space for transmitting small data before entering the connected state, including: determining the first part of resource configuration information of a dedicated search space for transmitting small data according to the first part of resource configuration information of a plurality of predefined dedicated search spaces; determining the second part of resource configuration information of a dedicated search space for transmitting small data according to the received indication signaling carrying the second part of resource configuration information of a plurality of dedicated search spaces, where the resource configuration information of the dedicated search space includes: the first part of resource configuration information and the second part of resource configuration information; the indication signaling includes broadcast signaling or dedicated signaling; where the small data is used to characterize data with a data volume less than a threshold and that needs to be continuously transmitted; there are multiple pieces of resource configuration information of the dedicated search space, and each piece of resource configuration information corresponds to a unique resource configuration information number; determining the resource configuration information of the dedicated search space for transmitting small data includes: determining the resource configuration information corresponding to the RO number from the multiple pieces of resource configuration information according to the mapping relationship between the random access occasion RO number selected by transmitting the random access preamble preamble and the resource configuration information number; or, determining the resource configuration information corresponding to the SSB index value from the multiple pieces of resource configuration information according to the mapping relationship between the received synchronization signal and physical broadcast channel block SSB index value and the resource configuration information number; or, determining the resource configuration information corresponding to the indication information from the multiple pieces of resource configuration information according to the indication information carried in the received contention resolution message Msg4 or MsgB; Determine a transmission resource unit, which is used to determine the physical downlink control channel PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space.

23. A resource allocation device for small data transmission, characterized in that, Including: Determine a resource configuration unit, which is used to determine the resource configuration information of a dedicated search space for transmitting small data of the terminal before determining that the terminal enters the connected state, including: determining the resource configuration information of a dedicated search space for transmitting the small data of the terminal according to the resource configuration information of a plurality of predefined dedicated search spaces; after determining the resource configuration information of the dedicated search space for transmitting the small data of the terminal, further including: sending the at least one resource configuration information to the terminal through a signaling message, where the signaling message includes a broadcast signaling message or a dedicated signaling message; there are multiple pieces of resource configuration information of the dedicated search space, and each piece of resource configuration information corresponds to a unique resource configuration information number; determining the resource configuration information of the dedicated search space for transmitting the small data of the terminal includes: determining the resource configuration information corresponding to the RO number from the multiple pieces of resource configuration information according to the mapping relationship between the received random access occasion RO number and the resource configuration information number; or, determining the resource configuration information corresponding to the SSB index value from the multiple pieces of resource configuration information according to the mapping relationship between the synchronization signal and the physical broadcast channel block SSB index value and the resource configuration information number; or, determining the resource configuration information from the multiple pieces of resource configuration information by itself; where the small data is used to represent data with a data volume less than a threshold and that needs to be continuously transmitted; Determine a resource transmission unit, which is used to determine the physical downlink control channel PDCCH resources for transmitting the small data according to the resource configuration information of the dedicated search space.

24. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the method according to any one of claims 1 to 9 or 10 to 19.

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