Small Data Transmission Processing Method, Terminal, Network Device, Apparatus, and Storage Medium

Abstract

The present disclosure provides a small data transmission method, a terminal, a network device, an apparatus, and a storage medium. The method includes receiving a first configuration message transmitted from a network device, where the first configuration message is for configuring a first configuration resource, and the first configuration resource is for transmitting related information of an MT-SDT process. When it is determined to trigger the MT-SDT process, in the first configuration resource, transmitting an RRC recovery request message to the network device.

Description

Technical Field

[0001] [Cross-reference] This application claims the priority of a Chinese patent application filed on July 29, 2022, with the application number 202210908486.3 and the invention title "Small Data Transmission Processing Method, Terminal, Network Device, Apparatus and Storage Medium", the whole of which is incorporated herein by reference.

[0002] The present disclosure relates to the technical field of communications, and in particular, to a small data transmission method, a terminal, a network device, an apparatus and a storage medium.

Background Art

[0003] When there is a need for uplink small data to be generated and transmitted to the network side for a terminal (UE: User Equipment) in an Inactive state, the UE starts a Mobile Original Small Data Transmission (MO-SDT) process triggered by the terminal.

[0004] For the MO-SDT process, the network side configures a Configured Grant (CG) resource or a Random Access Channel (RACH) resource for the transmission of the uplink small data.

[0005] For mobile terminate small data transmission (MT-SDT), the network side needs to send downlink small data to the UE and send a paging message to indicate that it is an MT-SDT process. After obtaining the paging message, the UE starts a radio resource control (RRC) recovery request message for the MT-SDT process to notify the network side that the UE is ready to receive downlink small data.

[0006] For the MT-SDT process, there is a problem of resource waste in executing the MT-SDT process by using the resources corresponding to the MO-SDT process set by the network device.

Summary of the Invention

Problems to be Solved by the Invention

[0007] Embodiments of the present disclosure provide a small data transmission method, a terminal, a network device, an apparatus, and a storage medium.

Means for Solving the Problems

[0008] In a first aspect, embodiments of the present disclosure provide a small data transmission method, the method including: receiving a first configuration message sent from a network device, where the first configuration message is for configuring a first configured resource, and the first configured resource is for transmitting related information of a mobile terminate small data transmission (MT-SDT) process; and when it is determined to trigger the MT-SDT process, sending a radio resource control (RRC) recovery request message to the network device on the first configured resource.

[0009] Optionally, the first configuration resource includes a configuration grant CG resource or a random access resource.

[0010] Optionally, the first configuration resource is the same as some resources for transmitting related information of the MO-SDT process configured by a network device, or the first configuration message includes first indication information, and the first indication information is used to instruct multiplexing of some resources for transmitting related information of the MO-SDT process configured by a network device, or the first configuration resource is a shared resource, and the shared resource is shared with resources for transmitting related information of the MO-SDT process configured by a network device.

[0011] Optionally, when the first configuration resource is a shared resource, transmitting a radio resource control RRC recovery request message to the network device includes transmitting a radio resource control RRC recovery request message and a first indication to the network device, and the first indication is for instructing that the first configuration resource is used for the MT-SDT process.

[0012] Optionally, the first configuration message carries index information of some CG resources for transmitting related information of the MO-SDT process configured by a network device, or occupancy information of some random access resources for transmitting related information of the MO-SDT process configured by a network device.

[0013] Optionally, the first set resource is the CG resource, and the first set message includes at least one or more of the time domain information of the CG resource, the frequency domain information of the CG resource, the first payload size threshold of the CG resource, and the first channel threshold of the CG resource.

[0014] Optionally, the time domain position of the CG resource is determined based on the paging timing and the time offset information in the time domain information, and / or the period in the time domain information of the CG resource and the paging period corresponding to the deactivated state terminal satisfy a preset relationship.

[0015] Optionally, the first payload size threshold is smaller than the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or the first payload size threshold is a percentage value of the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or the first payload size threshold and the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device are independent of each other.

[0016] Optionally, the first channel threshold is equal to the second channel threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device.

[0017] Optionally, the timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting the relevant information of the MO-SDT process set by the network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting the relevant information of the MO-SDT process set by the network device, or the CG resource and the CG resource for transmitting the relevant information of the MO-SDT process set by the network device share one timing advance timer and channel change threshold, wherein the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount.

[0018] Optionally, the first configured resource is the random access resource, and the first configured message includes at least one or more of a random access channel timing resource, a scrambling resource for the random access channel timing, priority information between the MT-SDT process and the MO-SDT process, and priority information between the MT-SDT process and characteristics supported by other networks.

[0019] Optionally, before transmitting the RRC recovery request message, the method determines that there is non-small data transmission triggered at the terminal and preferentially starts a random access process for the non-small data transmission triggered at the terminal, or determines that there is MO-SDT data transmission and preferentially executes the MO-SDT process.

[0020] In a second aspect, the embodiments of the present disclosure further provide a small data transmission method, and the method Transmitting a first configuration message to a terminal, where the first configuration message is for configuring a first configuration resource, and the first configuration resource is for receiving related information of the MT-SDT process, Receiving an RRC recovery request message transmitted by the terminal in the first configuration resource, and including.

[0021] Optionally, the first configuration resource includes a CG resource or a random access resource.

[0022] Optionally, the first configuration resource is the same as a part of the resources for transmitting related information of the MO-SDT process configured by the network device, or The first configuration message includes first indication information, and the first indication information is used to instruct multiplexing of a part of the resources for transmitting related information of the MO-SDT process configured by the network device, or The first configuration resource is a shared resource, and the shared resource is shared with the resources for transmitting related information of the MO-SDT process configured by the network device.

[0023] Optionally, when the first configuration resource is a shared resource, the method further includes Receiving a first indication transmitted from the terminal, where the first indication is for instructing that the first configuration resource is used for the MT-SDT process.

[0024] Optionally, the first configuration message carries index information of a part of the CG resources for transmitting related information of the MO-SDT process configured by the network device, or occupancy information of a part of the random access resources for transmitting related information of the MO-SDT process configured by the network device.

[0025] Optionally, the first set resource is the CG resource, and the first set message includes at least one or more of the time domain information of the CG resource, the frequency domain information of the CG resource, the first payload size threshold of the CG resource, and the first channel threshold of the CG resource.

[0026] Optionally, the time domain position of the CG resource is determined based on the paging timing and the time offset information in the time domain information, and / or the period in the time domain information of the CG resource and the paging period corresponding to the deactivated state terminal satisfy a preset relationship.

[0027] Optionally, the first payload size threshold is smaller than the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or, the first payload size threshold is a percentage value of the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or, the first payload size threshold and the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device are independent of each other.

[0028] Optionally, the first channel threshold is equal to the second channel threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device.

[0029] Optionally, the timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting the relevant information of the MO-SDT process set by the network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting the relevant information of the MO-SDT process set by the network device, or the CG resource and the CG resource for transmitting the relevant information of the MO-SDT process set by the network device share one timing advance timer and channel change threshold, wherein the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount.

[0030] Optionally, the first configured resource is the random access resource, and the first configured message includes at least one or more of a random access channel timing resource, a scrambling resource for the random access channel timing, priority information between the MT-SDT process and the MO-SDT process, and priority information between the MT-SDT process and characteristics supported by other networks.

[0031] In a third aspect, an embodiment of the present disclosure further provides a terminal, which includes a memory, a transceiver, and a processor. The memory is for storing a computer program, the transceiver is for transmitting and receiving data under the control of the processor, and the processor is for reading the computer program in the memory and executing the small data transmission method according to the first aspect described above.

[0032] In a fourth aspect, an embodiment of the present disclosure further provides a network device, which includes a memory, a transceiver, and a processor. The memory is for storing a computer program. The transceiver is for transmitting and receiving data under the control of the processor. The processor is for reading the computer program in the memory and executing the small data transmission method according to the second aspect described above.

[0033] In a fifth aspect, an embodiment of the present disclosure further provides a small data transmission apparatus, which is for receiving a first configuration message transmitted from a network device. The first configuration message is for configuring a first configuration resource, and the first configuration resource is for transmitting related information of a terminal terminate small data transmission (MT-SDT) process. The apparatus includes a receiving unit, and a transmitting unit. When it is determined to trigger the MT-SDT process, the transmitting unit is for transmitting a radio resource control (RRC) resume request message to the network device on the first configuration resource.

[0034] Optionally, the first configuration resource includes a configuration grant (CG) resource or a random access resource.

[0035] Optionally, the first configuration resource is the same as a part of the resources for transmitting related information of a mobile origin small data transmission (MO-SDT) process configured by the network device, or the first configuration message includes first indication information, and the first indication information is used to indicate multiplexing of a part of the resources for transmitting related information of the MO-SDT process configured by the network device, or the first configuration resource is a shared resource, and the shared resource is shared with the resources for transmitting related information of the MO-SDT process configured by the network device.

[0036] Optionally, if the first set resource is a shared resource, the sending unit further is used to send a Radio Resource Control (RRC) recovery request message and a first instruction to the network device, and the first instruction is for instructing that the first set resource is to be used in the MT-SDT process.

[0037] Optionally, the first set message carries index information of some CG resources for sending related information of the MO-SDT process set by the network device, or occupancy information of some random access resources for sending related information of the MO-SDT process set by the network device.

[0038] Optionally, the first set resource is the CG resource, and the first set message includes at least one or more of time domain information of the CG resource, frequency domain information of the CG resource, a first payload size threshold of the CG resource, and a first channel threshold of the CG resource.

[0039] Optionally, the time domain position of the CG resource is determined based on paging timing and time offset information in the time domain information, or the period in the time domain information of the CG resource and the paging period corresponding to the inactivated state terminal satisfy a preset relationship.

[0040] Optionally, the first payload size threshold is smaller than a second payload size threshold of the CG resource for sending related information of the MO-SDT process set by the network device, or the first payload size threshold is a percentage value of the second payload size threshold of the CG resource for sending related information of the MO-SDT process set by the network device, or The first payload size threshold and the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device, are independent of each other.

[0041] Optionally, the first channel threshold is equal to the second channel threshold of the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device.

[0042] Optionally, the timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device, or, The CG resource and the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device, share one timing advance timer and channel change threshold, wherein the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount.

[0043] Optionally, the first set resource is the random access resource, and the first set message includes at least one or more of a random access channel timing resource, a scrambling resource for the random access channel timing, priority information between the MT-SDT process and the MO-SDT process, and priority information between the MT-SDT process and characteristics supported by other networks.

[0044] Optionally, the device before transmitting the RRC recovery request message, It is determined that there is non-small data transmission triggered by the terminal, and a random access process for the non-small data transmission triggered by the terminal is preferentially started, or, It further includes a determination module used for determining that there is MO-SDT data transmission and preferentially executing the MO-SDT process.

[0045] In a sixth aspect, an embodiment of the present disclosure further provides a small data transmission device, and the small data transmission device is for transmitting a first configuration message to the terminal, the first configuration message is for configuring a first configuration resource, and the first configuration resource is for receiving relevant information of the MT-SDT process, and a transmission unit When it is determined to trigger the MT-SDT process, it includes a first receiving unit for receiving an RRC recovery request message transmitted by the terminal in the first configuration resource.

[0046] Optionally, the first configuration resource includes a CG resource or a random access resource.

[0047] Optionally, the first configuration resource is the same as a part of the resources for transmitting relevant information of the MO-SDT process configured by the network device, or the first configuration message includes first indication information, and the first indication information is used to indicate multiplexing of a part of the resources for transmitting relevant information of the MO-SDT process configured by the network device, or the first configuration resource is a shared resource, and the shared resource is shared with the resources for transmitting relevant information of the MO-SDT process configured by the network device.

[0048] Optionally, when the first configuration resource is a shared resource, the device It further includes a second receiving unit for receiving a first instruction transmitted from the terminal, and the first instruction is for instructing that the first set resource is used in the MT-SDT process.

[0049] Optionally, the first set message carries index information of some CG resources for transmitting related information of the MO-SDT process set by the network device, or occupancy information of some random access resources for transmitting related information of the MO-SDT process set by the network device.

[0050] Optionally, the first set resource is the CG resource, and the first set message includes at least one or more of time domain information of the CG resource, frequency domain information of the CG resource, a first payload size threshold of the CG resource, and a first channel threshold of the CG resource.

[0051] Optionally, the time domain position of the CG resource is determined based on paging timing and time offset information in the time domain information, or the period in the time domain information of the CG resource and the paging period corresponding to the deactivated terminal satisfy a preset relationship.

[0052] Optionally, the first payload size threshold is smaller than a second payload size threshold of the CG resource for transmitting related information of the MO-SDT process set by the network device, or the first payload size threshold is a percentage value of a second payload size threshold of the CG resource for transmitting related information of the MO-SDT process set by the network device, or the first payload size threshold and the second payload size threshold of the CG resource for transmitting related information of the MO-SDT process set by the network device are independent of each other.

[0053] Optionally, the first channel threshold is equal to a second channel threshold of a CG resource for transmitting related information of the MO-SDT process, which is set by a network device.

[0054] Optionally, the timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting related information of the MO-SDT process, which is set by a network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting related information of the MO-SDT process, which is set by a network device, or the CG resource and the CG resource for transmitting related information of the MO-SDT process, which is set by a network device, share one timing advance timer and one channel change threshold, wherein the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount.

[0055] Optionally, the first set resource is the random access resource, and the first set message includes at least one or more of a random access channel timing resource, a scrambling resource of the random access channel timing, priority information between the MT-SDT process and the MO-SDT process, and priority information between the MT-SDT process and characteristics supported by other networks.

[0056] In a seventh aspect, the embodiment of the present disclosure further provides a processor-readable storage medium storing a computer program for causing a processor to execute the small data transmission method according to the above-described first aspect or second aspect.

[0057] In an eighth aspect, the embodiment of the present disclosure further provides a computer-readable storage medium storing a computer program for causing a computer to execute the small data transmission method according to the above-described first aspect or second aspect.

[0058] In a ninth aspect, the embodiment of the present disclosure further provides a communication device storing a computer program for causing the communication device to execute the small data transmission method according to the above-described first aspect or second aspect.

[0059] In a tenth aspect, the embodiment of the present disclosure further provides a chip product storing a computer program for causing the chip product to execute the small data transmission method according to the above-described first aspect or second aspect.

Advantages of the Invention

[0060] In the small data transmission method, terminal, network device, apparatus, and storage medium according to the embodiment of the present disclosure, the terminal determines a first configured resource for transmitting related information of the MT-SDT process based on a first configuration message transmitted from the network device, and when it is determined that the MT-SDT process is triggered by the network side, the terminal transmits an RRC resume request message to the network device on the first configured resource. The resource configuration method for the MT-SDT process is made clear, and waste of resources is reduced.

[0061] Hereinafter, in order to more clearly explain the technical solutions in the embodiments of the present disclosure or related technologies, the drawings necessary for the description of the embodiments or related technologies will be briefly described. Of course, the drawings in the following description are some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings without creative labor.

Brief Description of the Drawings

[0062]

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Embodiments for Carrying Out the Invention

[0063] In order to better explain the technical solutions in the embodiments of the present disclosure, the following describes the related knowledge.

[0064] (1) MO-SDT process Small data transmission may be classified as follows. One type is small data transmission based on CG resources, and the other two types are small data transmission based on two-step random access or four-step random access. In the deactivated state, the UE transmits small data packets in a preset uplink resource (CG-SDT resource), or transmits small data packets in Msg.A (triggered by two-step random access) or Msg.3 (triggered by four-step random access). The small data packets include data radio bearer (DRB) data packets and signaling radio bearer (SRB) data packets. More specifically, according to the resource type used for the MO-SDT transmission, the MO-SDT process may be as follows.

[0065] (1) CG-SDT The CG resources used in the MO-SDT process are dedicated to a certain UE and set by the network side. The network side can determine the UE's identification information based on the received CG resource information of the MO-SDT and determine that this is a small data transmission process based on CG resources triggered by the UE. Based on the CG-SDT flow, the network side synchronously initializes the relevant bearers. The CG resources are periodic resources, and there is a limit on the payload size for the CG resources. As long as the size of the uplink data packet does not exceed this payload size threshold, the CG-SDT process can be used for transmission.

[0066] For the terminal-triggered CG-SDT, a Timing Advance (TA) timer is introduced. When the TA timer expires, TA becomes invalid, that is, the CG resources cannot be used. The validity of TA is guaranteed by the operation of the TA timer or by the fact that the change in the channel quality of the channel is lower than a threshold, that is, when the change range of the channel (reflecting the distance between the UE and the network device) is smaller than a certain threshold, it means that the moving distance between the UE and the base station is not large, and the TA value maintained so far remains valid.

[0067] (2) 4-Step RA-SDT Figure 1 is a flowchart of the 4-step random access according to the related art. As shown in Figure 1, the 4-step random access (4-Step RA) includes the following steps 1 to 4.

[0068] In step 1, the UE sends a message (Msg) 1 to the network-side device.

[0069] The UE selects a random access preamble and a Physical Random Access Channel (PRACH) resource, and uses the selected PRACH resource to send the selected random access preamble to the network device.

[0070] In step 2, the network device sends Msg2 to the UE.

[0071] The network device receives the random access preamble sent by the UE and sends a random access response to the UE.

[0072] In step 3, the UE sends Msg3 to the network device.

[0073] The UE transmits an uplink transmission in the uplink scheduling grant (UL Grant) specified in Msg2, and depending on different random accesses, the content of the uplink transmission in Msg3 is different. For small data transmission (SDT), it includes SDT data and an RRC recovery request message.

[0074] In step 4, the network device transmits Msg4 to the UE.

[0075] The network device transmits a contention resolution message to the UE, and the UE determines whether the random access is successful based on Msg4.

[0076] (3) 2-Step RA-SDT Figure 2 is a flowchart of a two-step random access according to the related art. As shown in Figure 2, a two-step contention random access process (2-Step RA) is derived based on 4-Step RA, specifically including the following steps 1 and 2.

[0077] In step 1, the UE transmits MsgA to the network device.

[0078] MsgA is the preamble transmission in the PRACH and the data transmission (including the payload size) in the physical uplink shared channel (PUSCH), corresponding to Msg1 and Msg3 in 4-Step RACH.

[0079] In step 2, the network device transmits MsgB to the UE.

[0080] MsgB is a random access response and a contention resolution message, corresponding to Msg2 and / or Msg4 in 4-Step RACH.

[0081] In the above-mentioned process, after the UE sends an RRC recovery request message and an SDT data packet in the CG resource, MsgA of the two-step random access, or Msg3 of the four-step random access, when receiving a response message from the network device, the SDT access is successful, and subsequent data transmission and reception in the inactive state of the UE can be performed.

[0082] In the two-step random access and four-step random access processes, for the MO-SDT process, the configuration of the CG resource and preamble resource corresponding to the MO-SDT process is introduced. The network pre-configures these resources. When the UE attempts to trigger the MO-SDT process, it sends a preamble in the corresponding resource, and the network side knows that this is the MO-SDT process and initializes the configuration of the relevant bearer of the SDT.

[0083] For the MO-SDT process, the network side allocates dedicated random access resources or scrambling resources in the random access preamble. These resources may be dedicated to the MO-SDT process or resources shared by other network-supported characteristics. Other network-supported characteristics are, for example, slices, Reduced Capability (RedCap), coverage enhancement, etc.

[0084] For the characteristics and combinations of characteristics supported by the network, the existing corresponding list in the current standard is clarified, and the network side sets the corresponding random access resources or scrambling resources for the MO-SDT process based on this list. When starting the MO-SDT request, the UE selects appropriate random access resources or scrambling resources to trigger the MO-SDT process.

[0085] (2) MT-SDT process FIG. 3 is a flowchart of the MT-SDT process according to an embodiment of the present disclosure. As shown in FIG. 3, the MT-SDT process includes at least the following steps A to C.

[0086] In step A, when the network side determines to generate small data and transmit it using the MT-SDT process, it sends a paging message to the UE, and the paging message carries MT indication information indicating that it is the MT-SDT process.

[0087] In step B, the terminal selects the corresponding SDT process and sends an RRC resume request message to the network device, which carries the MT indication information. The SDT process includes small data transmission based on CG resources and small data transmission based on two-step random access or four-step random access.

[0088] In step C, after receiving the RRC resume request message, the network device starts to configure the relevant bearer entity and sends downlink small data to the terminal.

[0089] After the MT-SDT process is introduced, the UE needs to notify the network device that it is the MT-SDT process triggered by the terminal side. If it completely reuses the MO-SDT process and sends relevant signaling in the CG resources corresponding to the MO-SDT process or the random access resources, the resources set by the network side for the uplink small data transmission of the MO-SDT process occupy relatively large time-frequency resources. For the MT-SDT process, completely reusing the resources corresponding to the MO-SDT process will result in waste of resources.

[0090] In response to the above problems existing in the related art, the embodiments of the present disclosure provide a small data transmission method, a terminal, a network device, an apparatus, and a storage medium.

[0091] In the embodiments of the present disclosure, the term "and / or" describes the relevant relationship of the relevant object, indicating that three types of relationships may exist. For example, A and / or B may indicate three cases: when A exists alone, when A and B exist simultaneously, and when B exists alone. The symbol " / " usually indicates that the relevant objects before and after are in an "or" relationship.

[0092] In the embodiments of the present disclosure, the term "a plurality of" means two or more, and other quantifiers are similar to this.

[0093] The technical solution according to the embodiments of the present disclosure is applicable to various systems, particularly 5G systems. For example, applicable systems include Global System of Mobile Communication (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA (registered trademark)), General Packet Radio Service (GPRS) systems, Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Long Term Evolution Advanced (LTE-A) systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) systems, 5G New Radio (NR) systems, and the like. Each of these various systems includes terminal devices and network devices. The system may also include a core network portion such as, for example, an Evloved Packet System (EPS), a 5G system (5GS), and the like.

[0094] The terminal device according to an embodiment of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the name of the terminal device may 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 may be a mobile terminal device such as a mobile phone (or called a "cellular" phone) or a computer having a mobile terminal device. For example, it is a portable, pocket-sized, handheld, computer-integrated, or in-vehicle mobile device, which exchanges language and / or data with the radio access network. Examples include devices such as personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA). The wireless terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, and is not limited in the embodiments of the present disclosure.

[0095] The network device according to an embodiment of the present disclosure may be a base station that can include a plurality of cells that provide services to terminals. Depending on specific application scenarios, the base station may also be referred to as an access point, and may be a device that communicates with wireless terminal devices via one or more sectors on an air interface in an access network, or may have other names. The network device can be used to exchange received air frames and Internet Protocol (IP) packets with each other as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also adjust the attribute management of the air interface. For example, the network device according to an embodiment of the present disclosure may be a network device (BTS: Base Transceiver Station) in a Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA), may be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), may be an evolved network device (eNB or e-NodeB: Evolutional Node B) in a Long Term Evolution (LTE) system, may be a 5G base station (gNB) in a 5G network architecture (Next Generation System), may be a Home evolved Node B (HeNB), a Relay Node, a Femto, a Pico, etc., and is not limited in the embodiments of the present disclosure.In a certain network structure, network devices may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, and the centralized unit and the distributed unit may be geographically separated and arranged.

[0096] Hereinafter, with reference to the drawings in the embodiments of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described. Of course, the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present disclosure.

[0097] In all embodiments of the present disclosure, when the terminal and the network perform data transmission in the MT-SDT or MO-SDT process, the terminal is in an Inactive state or an Idle state.

[0098] FIG. 4 is a first flowchart of a small data transmission method according to an embodiment of the present disclosure. As shown in FIG. 4, the execution entity of the method is a terminal, and the method includes at least step 401 and step 402.

[0099] In step 401, a first setting message sent from a network device is received. The first setting message is for setting a first setting resource, and the first setting resource is for transmitting related information of the MT-SDT process.

[0100] Specifically, the terminal receives a first setting message sent from the network. The first setting message is for setting a first setting resource, and the first setting resource is for the terminal to transmit related information of the MT-SDT process.

[0101] The first configuration message is, for example, an RRC release message or a broadcast system message, and the terminal determines a first configuration resource for transmitting related information of the MT-SDT process, which is configured by the network device, based on the RRC release message or the broadcast system message.

[0102] In step 402, if it is determined to trigger the MT-SDT process, an RRC recovery request message is transmitted to the network device in the first configuration resource.

[0103] Specifically, the terminal determines that the MT-SDT process is triggered by the network side, and transmits an RRC recovery request message to the network device in the first configuration resource. The RRC recovery request message is used to request the network device to recover the radio bearer related to MT-SDT.

[0104] The terminal may determine that the MT-SDT process is triggered by the network side based on the MT indication carried in the paging message transmitted from the network device.

[0105] In the small data transmission method according to the embodiment of the present disclosure, the terminal determines a first configuration resource for transmitting related information of the MT-SDT process based on the first configuration message transmitted from the network device. When it is determined that the MT-SDT process is triggered by the network side, an RRC recovery request message is transmitted to the network device in the first configuration resource. The resource configuration method for the MT-SDT process is clarified, and resource waste is reduced.

[0106] Optionally, the first configuration resource includes a configuration grant CG resource or a random access resource.

[0107] Specifically, the first configured resource can be classified into a CG resource or a random access resource based on the resource type. The random access resource includes a random access channel timing (RO:RACH Occasion) resource for two-step random access and four-step random access, or a scrambling resource in the random access preamble.

[0108] For the CG resource, the terminal directly transmits an RRC recovery request message in the CG resource indicated by the network side. For the random access resource, the terminal transmits a preamble in the RO resource or the scrambling resource indicated by the network side, and after receiving the preamble, the network side feeds back a random access response to the terminal. The random access response specifies an uplink scheduling grant (UL Grant), and the terminal transmits an RRC recovery request message and SDT data in the specified uplink scheduling grant.

[0109] Optionally, the first configured resource is the same as a part of the resources for transmitting the related information of the MO-SDT process configured by the network device, or the first configuration message includes first indication information, and the first indication information is used to indicate multiplexing of a part of the resources for transmitting the related information of the MO-SDT process configured by the network device, or the first configured resource is a shared resource, and the shared resource is shared with the resources for transmitting the related information of the MO-SDT process configured by the network device.

[0110] Specifically, the first configuration resource for transmitting the related information of the MT-SDT process set by the network device may be a part of the resources for transmitting the related information of the MO-SDT process set by the network device. For the convenience of description, the resources for transmitting the related information of the MO-SDT process set by the network device are denoted as the second configuration resources.

[0111] Since the data of MT-SDT is smaller than that of MO-SDT, the first configuration resource may be a part of the resources in the second configuration resource, and this part of the resources may be shared by the MO-SDT process and the MT-SDT process, or may be specified to be dedicated to the MT-SDT process. Specifically, The first configuration resource set by the network device is a part of the resources in the second configuration resource, or the first configuration message carries the first indication information, and the first indication information instructs the terminal to multiplex the second configuration resource set by the network device, or the first configuration resource is a shared resource, that is, the related information of the MT-SDT process and the related information of the MO-SDT process share the resources.

[0112] In the small data transmission method according to the embodiment of the present disclosure, the network device sets the first configuration resource for transmitting the related information of the MT-SDT process as a part of the resources for transmitting the related information of the MO-SDT process, and the overhead of the network resources is reduced.

[0113] As an option, when the first configuration resource is a shared resource, transmitting a radio resource control (RRC) recovery request message to the network device includes transmitting a radio resource control (RRC) recovery request message and a first indication to the network device, and the first indication is for instructing that the first configuration resource is used for the MT-SDT process, or Transmitting a Radio Resource Control (RRC) recovery request message and second indication information to the network device, where the second indication information is for indicating that the first configured resource is used for the MT-SDT process.

[0114] Note that the second indication information here has the same meaning as the first indication described above.

[0115] Specifically, when the first configured resource for transmitting the related information of the MT-SDT process, which is configured by the network device, is a shared resource, the terminal transmits an RRC recovery request message to the network side. The RRC recovery request message carries a first indication, and the first indication is for indicating that the first resource is used for the MT-SDT process.

[0116] When the first configured resource is a shared resource, the terminal needs to clarify whether the first configured resource is used for the MO-SDT process or the MT-SDT process by means of an MO indication or an MT indication in the signaling transmission process so as to avoid resource transmission collisions.

[0117] In the RRC recovery request message, the first indication may be an MT rhythm code, indicating that the RRC recovery request message is used to request the network device to recover the related radio bearer of MT-SDT.

[0118] The small data transmission method according to the embodiment of the present disclosure, when the first configured resource is a shared resource, uses the MT indication and the MO indication to distinguish the actual use of the first configured resource, and avoids resource transmission collisions caused by the shared resource.

[0119] As an option, the first configuration message carries index information of some CG resources for transmitting related information of the MO-SDT process, which is configured by the network device, or occupancy rate information of some random access resources for transmitting related information of the MO-SDT process, which is configured by the network device.

[0120] Specifically, when the first configuration resource is a part of the second configuration resource for transmitting related information of the MO-SDT process configured by the network device, the first configuration message may carry index information of some CG resources in the second configuration resource so as to clarify which part of the resources the CG resources used for the related information of the MT-SDT process specifically correspond to in the MO-SDT process.

[0121] Alternatively, the first configuration message may carry occupancy rate information of some random access resources in the second configuration resource so as to clarify which part of the resources the random access resources used for the MT-SDT process specifically correspond to in the MO-SDT process. As an option, in addition to clarifying the occupancy rate information, specific (for example, minimum or maximum) frequency domain resources or scrambling identifiers can be clarified.

[0122] In the small data transmission method according to the embodiment of the present disclosure, when the first configuration resource is a part of the resources for transmitting related information of the MO-SDT process configured by the network device, furthermore, the resource information available for the MT-SDT process is clarified by the index information of the CG resources or the occupancy rate information of the random access resources, thereby reducing the resource overhead of the network.

[0123] As an option, the first setting resource is the CG resource, and the first setting message includes at least one or more of the time domain information of the CG resource, the frequency domain information of the CG resource, the first payload size threshold of the CG resource, and the first channel threshold of the CG resource.

[0124] Specifically, the first setting resource for transmitting the related information of the MT-SDT process set by the network device may be part of the resources for transmitting the related information of the MO-SDT process set by the network device, or may be a resource newly set by the network device for the MT-SDT process, and the newly set resource may be a CG resource. When it is a CG resource, the network side needs to set the specific information of the CG resource, and the first setting message includes at least one or more of the following (1) to (4). (1) Time domain information of the CG resource. The time domain information is, for example, time offset information, period information, etc. (2) Frequency domain resource of the CG resource. (3) The first payload size threshold of the CG resource. Since the CG resource is a periodic resource, the CG resource is limited by the payload size threshold, and as long as the data packet does not exceed the first payload threshold size, SDT transmission can be performed using the CG resource. (4) The first channel threshold of the CG resource. When it is lower than the first channel threshold, it indicates that the distance between the terminal and the network device is too far, which affects the speed of SDT transmission.

[0125] As an option, the time domain position of the CG resource is determined based on the paging timing and the time offset information in the time domain information, and / or the period in the time domain information of the CG resource and the paging period corresponding to the inactivated state terminal satisfy a preset relationship.

[0126] As an option, the time domain position of the CG resource is determined based on the paging timing and the time offset information in the time domain information of the CG resource, and / or the periodic information of the CG resource and the paging period corresponding to the deactivated state terminal satisfy a preset relationship.

[0127] In other words, the periodic information in the time domain of the CG resource and the paging period corresponding to the deactivated state terminal satisfy a preset relationship.

[0128] Specifically, the time domain position of the CG resource is jointly determined by the paging timing (PO: Paging Occasion) of the deactivated state terminal and the time offset information in the time domain information. For example, the time domain position of the CG resource may use the paging timing of the deactivated state terminal as the starting position and the length as the time offset value in the time domain information of the CG resource. For example, the starting position of the CG resource is after the paging timing, and the length is the time offset value.

[0129] As an option, the starting position of the CG resource is after N time slots and / or M subframes after the paging message.

[0130] The period in the time domain information of the CG resource and the paging period corresponding to the deactivated state terminal satisfy a preset relationship. For example, the period of the CG resource is a specific multiple of the paging period corresponding to the deactivated state terminal, or the period of the CG resource is 1 / N of the paging period corresponding to the deactivated state terminal, where N is a positive integer.

[0131] For example, the period of the CG resource is the paging period during which the deactivated state terminal performs paging monitoring. For example, the period of the CG resource is the minimum value of the core network paging period and the radio access network paging period of the terminal. The paging period is in units of radio frames.

[0132] Optionally, the first payload size threshold is smaller than the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or the first payload size threshold is a percentage value of the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or the first payload size threshold and the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device are independent of each other.

[0133] Specifically, the payload size threshold of the CG resource for transmitting the related information of the MT-SDT process set by the network device is denoted as the first payload size threshold, and the payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device is denoted as the second payload size threshold.

[0134] The first payload size threshold may be set smaller than the second payload size threshold, or the first payload size threshold may be set to a percentage value of the second payload size threshold, for example, M percent, where M is any positive number less than 100, or the first payload size threshold is an independent numerical value set by the network side and is independent of the second payload size threshold.

[0135] Optionally, the first channel threshold is equal to the second channel threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device.

[0136] Specifically, the channel threshold of the CG resource for transmitting the related information of the MT-SDT process set by the network device is denoted as the first channel threshold, and the channel threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device is denoted as the second channel threshold.

[0137] The first channel threshold may be set to be the same as the second channel threshold, or the first channel threshold may be an independent value set by the network side and is not associated with the second channel threshold.

[0138] Optionally, the timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting the related information of the MO-SDT process set by the network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or The CG resource and the CG resource for transmitting the related information of the MO-SDT process set by the network device share one timing advance timer and channel change threshold, wherein the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount.

[0139] Specifically, the CG resource for transmitting the related information of the MT-SDT process set by the network device and the CG resource for transmitting the related information of the MO-SDT process set by the network device may have the same numerical values for both their timing advance mechanisms and channel change thresholds, or they may share one timing advance timer and channel change threshold. That the channel change of the terminal is smaller than the channel change threshold and the timing advance timer is still operating is one of the conditions for the validity of the CG resource.

[0140] The validity of the timing advance amount is guaranteed by the timing advance timer and the channel change threshold. When the timing advance timer expires, it indicates that the timing advance amount becomes invalid and the CG resource can no longer be used. When the channel change threshold is exceeded, it indicates that the change in the distance between the terminal and the network device is relatively large, the previous timing advance amount is no longer applicable, and the CG resource can no longer be used.

[0141] Optionally, the first set resource is the random access resource, and the first set message includes at least one or more of a random access channel timing resource, a scrambling resource for the random access channel timing, priority information between the MT-SDT process and the MO-SDT process, and priority information between the MT-SDT process and the characteristics supported by other networks.

[0142] Specifically, the first setting resource for transmitting the related information of the MT-SDT process set by the network device may be part of the resources for transmitting the related information of the MO-SDT process set by the network device, or may be a resource newly set by the network device for the MT-SDT process. The newly set resource may be a random access resource. When it is a random access resource, the network side needs to set the specific information of the random access resource, and the first setting message includes at least one or more of the following (1) to (4). (1) Random access channel timing resource. (2) Random access channel timing scrambling resource. (3) Priority information between the MT-SDT process and the MO-SDT process. When MO-SDT and MT-SDT transmissions exist simultaneously, it is necessary to clarify the priorities of both to avoid data transmission collisions. (4) Priority information between the MT-SDT process and the characteristics supported by other networks. The characteristics supported by other networks are, for example, slices, reduction capabilities, coverage enhancement, etc. It is necessary to clarify the priorities between the MT-SDT process and these characteristics or combinations of characteristics to avoid service collisions.

[0143] For example, it is set that the priority of MO-SDT is higher than that of MT-SDT. For example, it is set that the priority of the combination of MO-SDT and other characteristics is higher than the priority of the combination of MT-SDT and other characteristics.

[0144] The small data transmission method according to the embodiment of the present disclosure newly sets a dedicated CG resource or a random access resource for the MT-SDT process, and avoids waste of resources by completely reusing the MO-SDT resources.

[0145] Optionally, before transmitting the RRC recovery request message, the method It is determined that there is non-small data transmission triggered by the terminal, and the random access process for the non-small data transmission triggered by the terminal is preferentially started, or It is determined that there is MO-SDT data transmission, and the MO-SDT process is preferentially executed, and further includes.

[0146] Specifically, for the MT-SDT process, it is necessary to clarify the priority between the MT-SDT process and the MO-SDT process, and the priority between the MT-SDT process and the non-small data transmission process triggered by the terminal.

[0147] Before the terminal sends an RRC recovery request message, if it is determined that there is non-small data transmission triggered by the terminal, the random access process of the non-small data transmission triggered by the terminal is preferentially started, or if it is determined that there is MO-SDT data transmission, the MO-SDT process is preferentially executed.

[0148] Before sending the RRC recovery request message, it may be before sending MsgA, Msg1 (i.e., scrambling in the preamble), or before sending the SDT data of Msg3, or after receiving the paging message sent from the network side. The priorities of the MO-SDT process and the non-small data transmission process triggered by the terminal are both higher than the priority of the MT-SDT process.

[0149] The small data transmission method according to the embodiment of the present disclosure clarifies the priorities of the MO-SDT process, the non-small data transmission process triggered by the terminal, and the MT-SDT process so as to avoid resource transmission collisions.

[0150] FIG. 5 is a second flowchart of the small data transmission method according to the embodiment of the present disclosure. As shown in FIG. 5, the execution body of the method is a network device, such as a base station, etc., and the method includes at least step 501 and step 502.

[0151] In step 501, a first configuration message is sent to the terminal, and the first configuration message is for configuring a first configuration resource, and the first configuration resource is for receiving related information of the MT-SDT process.

[0152] Specifically, the network device sends a first configuration message to the terminal. The first configuration message is for configuring a first configuration resource, and the first configuration resource is for the network device to receive related information of the MT-SDT process.

[0153] The first configuration message is, for example, an RRC release message or a broadcast system message.

[0154] In step 502, the network device receives the RRC recovery request message sent by the terminal on the first configuration resource.

[0155] Specifically, when the network device determines to generate small data and transmit it using the MT-SDT process, the network device sends a paging message carrying the MT indication to the terminal. After the terminal determines to trigger the MT-SDT process, the terminal responds to the paging message of the network device. The network device receives the RRC recovery request message sent by the terminal on the first configuration resource, and restores the related radio bearer of the MT-SDT process.

[0156] In the small data transmission method according to the embodiment of the present disclosure, in the network device, a first configuration resource for transmitting related information of the MT-SDT process is configured for the terminal by a first configuration message. Thereby, after the network device starts a paging message for MT-SDT, the network device can receive the RRC recovery request message sent by the terminal on the first configuration resource, the resource configuration method for the MT-SDT process becomes clear, and resource waste is reduced.

[0157] As an option, the first configured resource includes a CG resource or a random access resource.

[0158] Specifically, the first configured resource can be classified into a CG resource or a random access resource based on the resource type. The random access resource includes a random access channel timing (RO: RACH Occasion) resource for two-step random access and four-step random access, or a scrambling resource in a random access preamble.

[0159] For the CG resource, the network device receives an RRC recovery request message in the indicated CG resource. For the random access resource, the network device receives a preamble transmitted from the terminal in the indicated RO resource or scrambling resource. After receiving the preamble, the network side feeds back a random access response to the terminal, and an uplink scheduling grant (UL Grant) is specified in the random access response. The network device receives an RRC recovery request message and SDT data in the specified uplink scheduling grant.

[0160] As an option, the first configured resource is the same as some of the resources for transmitting the related information of the MO-SDT process configured by the network device, or the first configuration message includes first indication information, and the first indication information is used to indicate multiplexing some of the resources for transmitting the related information of the MO-SDT process configured by the network device, or the first configured resource is a shared resource, and the shared resource is shared with the resources for transmitting the related information of the MO-SDT process configured by the network device.

[0161] Specifically, the network device may set a first set of resources for transmitting the related information of the MT-SDT process and set some resources for transmitting the related information of the MO-SDT process. For the convenience of description, the resources set by the network device for transmitting the related information of the MO-SDT process are denoted as the second set of resources.

[0162] Since the data of MT-SDT is smaller than that of MO-SDT, the first set of resources may be some of the resources in the second set of resources, and this part of the resources may be shared by the MO-SDT process and the MT-SDT process, or may be specified to be dedicated to the MT-SDT process. Specifically, The first set of resources set by the network device is some of the resources in the second set of resources, or the first set message carries first indication information, and the first indication information instructs the terminal to multiplex the second set of resources set by the network device, or the first set of resources is a shared resource, that is, the related information of the MT-SDT process and the related information of the MO-SDT process share resources.

[0163] In the small data transmission method according to the embodiment of the present disclosure, the network device sets that the first set of resources for transmitting the related information of the MT-SDT process is some of the resources for transmitting the related information of the MO-SDT process, and the overhead of the network resources is reduced.

[0164] Optionally, when the first set of resources is a shared resource, the method further includes: Receiving a first instruction sent from the terminal, where the first instruction is for instructing that the first set of resources is used for the MT-SDT process.

[0165] Specifically, when the first setting resource for transmitting the related information of the MT-SDT process set by the network device is a shared resource, in addition to receiving the RRC recovery request message sent from the terminal, the network side can receive the first instruction sent from the terminal, and the first instruction is for instructing that the first resource is used for the MT-SDT process.

[0166] When the first setting resource is a shared resource, the terminal needs to clarify whether the first setting resource is used for the MO-SDT process or the MT-SDT process by means of an MO instruction or an MT instruction in the signaling transmission process so as to avoid the collision of resource transmission.

[0167] In the RRC recovery request message, the first instruction may be an MT rhythm code, indicating that the RRC recovery request message is used to request the network device to recover the related radio bearer of MT-SDT.

[0168] The small data transmission method according to the embodiment of the present disclosure, when the first setting resource is a shared resource, uses the MT instruction and the MO instruction to distinguish the actual use of the first setting resource, and avoids the collision of resource transmission by the shared resource.

[0169] Optionally, the first setting message carries the index information of some CG resources for transmitting the related information of the MO-SDT process set by the network device, or the occupancy rate information of some random access resources for transmitting the related information of the MO-SDT process set by the network device.

[0170] Specifically, when the first configured resource is a part of the second configured resource for transmitting the related information of the MO-SDT process configured by the network device, the first configuration message may carry the index information of some CG resources in the second configured resource so as to clarify which part of the resources in the second configured resource the CG resources used for the related information of the MT-SDT process specifically correspond to the MO-SDT process.

[0171] Alternatively, the first configuration message may carry the occupancy information of some random access resources in the second configured resource so as to clarify which part of the resources in the second configured resource the random access resources used for the MT-SDT process specifically correspond to the MO-SDT process. As an option, in addition to clarifying the occupancy information, specific (for example, minimum or maximum) frequency domain resources or scrambling identifiers can be clarified.

[0172] The small data transmission method according to the embodiment of the present disclosure, when the first configured resource is a part of the resources for transmitting the related information of the MO-SDT process configured by the network device, further clarifies the resource information available for the MT-SDT process by the index information of the CG resources or the occupancy information of the random access resources, thereby reducing the resource overhead of the network.

[0173] As an option, the first configured resource is the CG resource, and the first configuration message includes at least one or more of the time domain information of the CG resource, the frequency domain information of the CG resource, the first payload size threshold of the CG resource, and the first channel threshold of the CG resource.

[0174] Specifically, the first setting resource for transmitting the related information of the MT-SDT process set by the network device may be part of the resources for transmitting the related information of the MO-SDT process set by the network device, or may be a resource newly set by the network device for the MT-SDT process. The newly set resource may be a CG resource. In the case of a CG resource, the network side needs to set the specific information of the CG resource, and the first setting message includes at least one or more of the following (1) to (4). (1) Time domain information of the CG resource. The time domain information is, for example, time offset information, period information, etc. (2) Frequency domain resource of the CG resource. (3) The first payload size threshold of the CG resource. Since the CG resource is a periodic resource, the CG resource is limited by the payload size threshold, and SDT transmission can be performed using the CG resource as long as the data packet does not exceed the first payload threshold size. (4) The first channel threshold of the CG resource. When it is lower than the first channel threshold, it indicates that the distance between the terminal and the network device is too far, which affects the speed of SDT transmission.

[0175] Optionally, the time domain position of the CG resource is determined based on the paging timing and the time offset information in the time domain information, or the period in the time domain information of the CG resource and the paging period corresponding to the deactivated terminal satisfy a preset relationship.

[0176] Specifically, the time-domain position of the CG resource is jointly determined by the paging timing of the deactivated state terminal and the time offset information in the time-domain information. For example, the time-domain position of the CG resource may use the paging timing of the deactivated state terminal as the starting position and the length as the time offset value in the time-domain information of the CG resource. For example, the starting position of the CG resource is after the paging timing, and the length is the time offset value.

[0177] As an option, the starting position of the CG resource is after N time slots and / or M subframes after the paging message.

[0178] The period in the time-domain information of the CG resource and the paging period corresponding to the deactivated state terminal satisfy a preset relationship. For example, the period of the CG resource is a specific multiple of the paging period corresponding to the deactivated state terminal, or the period of the CG resource is 1 / N of the paging period corresponding to the deactivated state terminal, where N is a positive integer.

[0179] For example, the period of the CG resource is the paging period during which the deactivated state terminal performs paging monitoring. For example, the period of the CG resource is the minimum value of the core network paging period and the radio access network paging period of the terminal. The paging period is in units of radio frames.

[0180] As an option, the first payload size threshold is smaller than the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or the first payload size threshold is a percentage value of the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or The first payload size threshold and the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device, are independent of each other.

[0181] Specifically, the payload size threshold of the CG resource for transmitting the related information of the MT-SDT process, which is set by the network device, is denoted as the first payload size threshold, and the payload size threshold of the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device, is denoted as the second payload size threshold.

[0182] The first payload size threshold may be set to be smaller than the second payload size threshold, or the first payload size threshold may be set to a percentage value of the second payload size threshold, for example, M percent, where M is any positive number less than 100, or the first payload size threshold is an independent numerical value set by the network side and is independent of the second payload size threshold.

[0183] Optionally, the first channel threshold is equal to the second channel threshold of the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device.

[0184] Specifically, the channel threshold of the CG resource for transmitting the related information of the MT-SDT process, which is set by the network device, is denoted as the first channel threshold, and the channel threshold of the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device, is denoted as the second channel threshold.

[0185] The first channel threshold may be set to be the same as the second channel threshold, or the first channel threshold may be an independent numerical value set by the network side and is not associated with the second channel threshold.

[0186] Optionally, the timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting the relevant information of the MO-SDT process set by the network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting the relevant information of the MO-SDT process set by the network device, or the CG resource and the CG resource for transmitting the relevant information of the MO-SDT process set by the network device share one timing advance timer and channel change threshold, wherein the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount.

[0187] Specifically, the CG resource for transmitting the relevant information of the MT-SDT process set by the network device and the CG resource for transmitting the relevant information of the MO-SDT process set by the network device may be set to the same numerical value for both their timing advance mechanisms and channel change thresholds, or both may share one timing advance timer and channel change threshold. That the channel change of the terminal is smaller than the channel change threshold and the timing advance timer is still operating is one of the conditions for the effectiveness of the CG resource.

[0188] The effectiveness of the timing advance amount is guaranteed by the timing advance timer and the channel change threshold. When the timing advance timer expires, it indicates that the timing advance amount becomes invalid and the CG resource can no longer be used. When the channel change threshold is exceeded, it indicates that the change in the distance between the terminal and the network device is relatively large, the previous timing advance amount is no longer applicable, and the CG resource can no longer be used.

[0189] As an option, the first configured resource is the random access resource, and the first configured message includes at least one or more of a random access channel timing resource, a scrambling resource for the random access channel timing, priority information between the MT-SDT process and the MO-SDT process, and priority information between the MT-SDT process and characteristics supported by other networks.

[0190] Specifically, the first configured resource for transmitting related information of the MT-SDT process set by the network device may be part of the resources for transmitting related information of the MO-SDT process set by the network device, or may be a resource newly configured by the network device for the MT-SDT process. The newly configured resource may be a random access resource. When it is a random access resource, the network side needs to set specific information of the random access resource, and the first configured message includes at least one or more of the following (1) to (4). (1) Random access channel timing resource. (2) Scrambling resource for the random access channel timing. (3) Priority information between the MT-SDT process and the MO-SDT process. When MO-SDT and MT-SDT transmissions coexist, it is necessary to clarify the priorities of both to avoid data transmission collisions. (4) Priority information between the MT-SDT process and characteristics supported by other networks. Characteristics supported by other networks are, for example, slices, reduction capabilities, coverage enhancements, etc. It is necessary to clarify the priorities between the MT-SDT process and these characteristics or combinations of characteristics to avoid service collisions.

[0191] For example, set the priority of MO-SDT to be higher than that of MT-SDT. For example, set the priority of the combination of MO-SDT and other characteristics to be higher than the priority of the combination of MT-SDT and other characteristics.

[0192] The small data transmission method according to the embodiment of the present disclosure newly sets a dedicated CG resource or a random access resource for the MT-SDT process, and avoids resource waste caused by completely reusing the MO-SDT resources.

[0193] The following further describes the technical solution of the embodiment of the present disclosure by means of several specific examples.

[0194] Example 1: The embodiment of the present disclosure provides a small data transmission method, sets the CG resource of MT-SDT on the network side, and the terminal uses the CG resource to send the RRC message of MT-SDT. Specifically, the method includes the following steps A to D.

[0195] In step A, the network device sets the CG resource of MT-SDT, specifically including the following.

[0196] (1) Select some resources set for MO-SDT and use them for MT-SDT, set a first payload size threshold dedicated to MT-SDT, and if the initial uplink data packet of MT-SDT is lower than the first payload size threshold, perform MT-SDT transmission using the corresponding CG resource.

[0197] (2) Or, newly set a dedicated CG resource for MT-SDT. Specifically, set the time domain information and frequency domain information of the CG resource. The time domain information includes period information and time offset value. The period of the CG resource is set to a specific multiple of the paging period of the inactivated state terminal. The time domain position of the CG resource starts from the paging timing of the inactivated state terminal and has a time offset value as the length.

[0198] In step B, the terminal acquires the paging message carrying the MT instruction sent from the network device, makes an autonomous selection, and then decides to use the CG-SDT method to send an RRC recovery request message on the common control channel (CCCH: Common Control Channel).

[0199] Specifically, an RRC recovery request message is sent using any one type of CG resource in step A.

[0200] In step C, after the terminal sends an RRC recovery request message on the CG resource, it receives the downlink data information fed back from the network side.

[0201] Since the CG resources for MO-SDT and MT-SDT are both uplink transmission resources, the two may share one timing advance counter and the channel change threshold regarding the validity of the timing advance amount.

[0202] Alternatively, when the CG resource for MT-SDT is set first, MO-SDT can multiplex the timing advance timer and the channel change threshold of MT-SDT.

[0203] The timing advance timer of CG-SDT may be restarted each time the timing advance amount corresponding to CG-SDT (including MO-SDT and MT-SDT) is updated.

[0204] In step D, after receiving the RRC recovery request message, the network device determines that the terminal has started the MT-SDT process and transmits downlink data information. FIG. 6 is a schematic diagram of the time domain position of the CG resource according to an embodiment of the present disclosure. As shown in FIG. 6, the period of the CG resource is in a proportional relationship with the paging period of the inactivated state terminal, and the start position of the CG resource is after the paging timing. After the terminal acquires the paging message, it is advantageous to start the MT-SDT process in consideration of the effective CG resource from the delay angle.

[0205] Correspondingly, the network sets the period and time offset value of the time domain of the CG resource, and the period is a specific multiple of the paging period of the inactivated state terminal.

[0206] Example 2: The embodiment of the present disclosure provides a small data transmission method, and sets the random access resource of MT-SDT on the network side. Specifically, the method includes the following steps A to D.

[0207] In step A, the network device sets the random access resource used for MT-SDT by using a broadcast system message or dedicated signaling. Specifically, it includes at least one of the RO resource, the scrambling resource, the priority information between the MT-SDT process and the MO-SDT process, and the priority information between the MT-SDT process and the characteristics supported by other networks.

[0208] When MT-SDT shares some RO resources of MO-SDT, the occupancy information of some RO resources is indicated by msgA-SSB-SharedRO-MaskIndex.

[0209] When MT-SDT shares some scrambling resources of MO-SDT, the corresponding scrambling identifier, or index information and count information are given.

[0210] In step B, after the terminal obtains the paging message carrying the MT indication, it makes an autonomous selection and then decides to use the RA-SDT (including 2-step random access or 4-step random access) method to send an RRC recovery request message on the CCCH. Based on the network-side configuration information, the terminal selects the RO resource or scrambling resource corresponding to the MT-SDT and sends the scrambling in the preamble corresponding to the MT-SDT.

[0211] In step C, the terminal uses the uplink scheduling grant of MsgA or Msg3 to send an RRC recovery request message.

[0212] In step D, after receiving the RRC recovery request message, the network device determines that the UE has started the MT-SDT process and sends downlink data information. FIG. 7 is a schematic diagram of the random access resource according to the embodiment of the present disclosure. As shown in FIG. 7, for 4-step random access and 2-step random access, the terminal can trigger the MT-SDT process using the Legacy random access process, and the MT indication is carried in the RRC recovery request message. The network side receives the MT indication carried in the RRC recovery request message. The network verifies the identification information of the terminal based on the paging message of the MT-SDT and recognizes the downlink data transmitted using the MT-SDT method.

[0213] Before sending the RRC recovery request message, the terminal re-establishes the Packet Data Convergence Protocol (PDCP) entity related to the SDT bearer and completes the initialization of the SDT.

[0214] Before transmitting the scrambled, MsgA or Msg3 data, if the terminal discovers that there is non-small data transmission triggered at the terminal, the RRC recovery request message carries the indication information of the non-small data transmission triggered at the terminal (optionally, in the uplink resource corresponding to MT-SDT, send an RRC recovery request message carrying an MO indication), and after the network migrates the terminal to the connected state, it performs data transmission.

[0215] Before transmitting scrambling, or before transmitting an RRC recovery request message, or after receiving a paging message, if the terminal discovers that there is MO-SDT data transmission, it triggers data transmission using the MO-SDT process, and the priority of MO-SDT is higher than that of MT-SDT.

[0216] For CG MT-SDT, the terminal triggers the MT-SDT process using the CG resources of legacy MO-SDT, and the RRC recovery request message carries an MT indication. After the network side obtains the MT indication carried in the RRC recovery request message, it transmits downlink data using the MT-SDT method. Before transmitting the RRC recovery request message, the terminal re-establishes all SDT PDCP entities and completes the initialization of SDT. Before transmitting the RRC recovery request message, if the terminal discovers that there is non-small data transmission triggered at the terminal, the RRC recovery request message carries the indication information of the non-small data transmission triggered at the terminal (optionally, in the uplink resource corresponding to MT-SDT, send an RRC recovery request message carrying an MO indication), and after the network migrates the terminal to the connected state, it performs data transmission. If the UE discovers that there is MO-SDT data transmission before transmitting the RRC recovery request message, it triggers data transmission using the MO-SDT process. The priority of MO-SDT is higher than that of MT-SDT.

[0217] For CG MT-SDT, if the UE discovers that there is non-small data transmission triggered at the terminal before transmitting the RRC recovery request message, it uses the legacy random access process for non-small data transmission, the RRC recovery request message carries the MO indication, and after the network migrates the UE to the connected state, it performs data transmission.

[0218] The small data transmission method according to the embodiments of the present disclosure clarifies resource allocation using some MO-SDT resources and resource setting of newly configured MT-SDT resources for the MT-SDT process, effectively reducing the resource overhead of the network.

[0219] FIG. 8 is a schematic diagram of the structure of a terminal according to an embodiment of the present disclosure. As shown in FIG. 8, the terminal includes a memory 801, a transceiver 802, and a processor 803. Here, The memory 801 is for storing computer programs, and the transceiver 802 is for transmitting and receiving data under the control of the processor 803.

[0220] Specifically, the transceiver 802 is for receiving and transmitting data under the control of the processor 803.

[0221] Here, in FIG. 8, the bus architecture may include any number of interconnected buses and bridges. Specifically, various circuits of one or more processors represented by processor 803 and memory represented by memory 801 are integrally linked. The bus architecture can also integrally link various other circuits such as, for example, peripheral devices, voltage regulators, power management circuits, etc. Since these are all well-known in the art, they will not be further described herein. The bus interface provides an interface. The transceiver 802 may be a plurality of elements, that is, it includes a transmitter and a receiver, and provides a unit for communicating with various other devices in the transmission medium. These transmission media include transmission media such as wireless channels, wired channels, optical cables, etc. For different user devices, the user interface 804 may be an interface that can be externally or internally connected to the required devices. The devices to be connected include, but are not limited to, keypads, displays, speakers, microphones, joysticks, etc.

[0222] The processor 803 manages the bus architecture and normal processing, and the memory 801 can store the data used when the processor 803 executes operations.

[0223] Optionally, the processor 803 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 adopt a multi-core architecture.

[0224] The processor is used to execute any of the above methods according to the obtained executable instructions by calling a computer program stored in the memory. The processor and the memory may be physically separated.

[0225] The processor 803 reads a computer program in the memory 801, receives a first configuration message sent from a network device, where the first configuration message is for configuring a first configuration resource, and the first configuration resource is for transmitting related information of a terminal terminate small data transmission MT-SDT process, and when it is determined to trigger the MT-SDT process, executes operations including transmitting a radio resource control RRC recovery request message to the network device in the first configuration resource.

[0226] Optionally, the first configuration resource includes a configuration grant CG resource or a random access resource.

[0227] Optionally, the first configuration resource is the same as a part of the resources for transmitting related information of the MO-SDT process configured by the network device, or the first configuration message includes first indication information, and the first indication information is used to indicate multiplexing of a part of the resources for transmitting related information of the MO-SDT process configured by the network device, or the first configuration resource is a shared resource, and the shared resource is shared with the resources for transmitting related information of the MO-SDT process configured by the network device.

[0228] As an option, when the first configured resource is a shared resource, sending a Radio Resource Control (RRC) recovery request message to the network device is including sending a Radio Resource Control (RRC) recovery request message and a first indication to the network device, where the first indication is for indicating that the first configured resource is to be used in the MT-SDT process.

[0229] As an option, the first configuration message carries index information of some CG resources for sending related information of the MO-SDT process configured by the network device, or occupancy information of some random access resources for sending related information of the MO-SDT process configured by the network device.

[0230] As an option, the first configured resource is the CG resource, and the first configuration message includes at least one or more of time domain information of the CG resource, frequency domain information of the CG resource, a first payload size threshold of the CG resource, and a first channel threshold of the CG resource.

[0231] As an option, the time domain position of the CG resource is determined based on paging timing and time offset information in the time domain information, or the period in the time domain information of the CG resource and the paging period corresponding to the inactivated state terminal satisfy a preset relationship.

[0232] As an option, the first payload size threshold is smaller than a second payload size threshold of the CG resource for sending related information of the MO-SDT process configured by the network device, or the first payload size threshold is a percentage value of the second payload size threshold of the CG resource for sending related information of the MO-SDT process configured by the network device, or The first payload size threshold and the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device, are independent of each other.

[0233] Optionally, the first channel threshold is equal to the second channel threshold of the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device.

[0234] Optionally, the timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device, or, The CG resource and the CG resource for transmitting the related information of the MO-SDT process, which is set by the network device, share one timing advance timer and channel change threshold, wherein the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount.

[0235] Optionally, the first set resource is the random access resource, and the first set message includes at least one or more of a random access channel timing resource, a scrambling resource for the random access channel timing, priority information between the MT-SDT process and the MO-SDT process, and priority information between the MT-SDT process and characteristics supported by other networks.

[0236] Optionally, the processor 803 reads the computer program in the memory 801, before transmitting the RRC recovery request message. It is determined that there is non-small data transmission triggered by the terminal, and the random access process for the non-small data transmission triggered by the terminal is preferentially started, or It is determined that there is MO-SDT data transmission, and the MO-SDT process is preferentially executed, and it is for further executing an operation including this.

[0237] Note that the terminal according to the embodiment of the present disclosure can realize all the method steps of the embodiment of the method with the terminal as the execution main body, and can achieve the same technical effects. Here, the details of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

[0238] FIG. 9 is a schematic diagram of the structure of a network device according to an embodiment of the present disclosure. As shown in FIG. 9, the network device includes a memory 901, a transceiver 902, and a processor 903. Here, The memory 901 is for storing a computer program, and the transceiver 902 is for transmitting and receiving data under the control of the processor 903.

[0239] Specifically, the transceiver 902 is for receiving and transmitting data under the control of the processor 903.

[0240] Here, in FIG. 9, the bus architecture may include any number of interconnected buses and bridges. Specifically, various circuits such as one or more processors represented by processor 903 and memory represented by memory 901 are integrally linked. The bus architecture can also integrally link various other circuits such as, for example, peripheral devices, voltage regulators, power management circuits, etc. Since these are all well-known in the art, they will not be further described herein. The bus interface provides an interface. The transceiver 902 may be a plurality of elements, that is, it includes a transmitter and a receiver, and provides a unit for communicating with various other devices in the transmission medium. These transmission media include transmission media such as wireless channels, wired channels, and optical cables. The processor 903 manages the bus architecture and normal processing, and the memory 901 can store data used when the processor 903 executes operations.

[0241] The processor 903 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), and the processor may adopt a multi-core architecture.

[0242] The processor 903 reads the computer program in the memory 901, and transmits a first setting message to the terminal, where the first setting message is for setting a first setting resource, and the first setting resource is for receiving related information of the MT-SDT process. When it is determined to trigger the MT-SDT process, it is for performing an operation including receiving the RRC recovery request message sent by the terminal in the first configured resource.

[0243] Optionally, the first configured resource includes a CG resource or a random access resource.

[0244] Optionally, the first configured resource is the same as a part of the resources for transmitting the related information of the MO-SDT process configured by the network device, or the first configuration message includes first indication information, and the first indication information is used to instruct multiplexing of a part of the resources for transmitting the related information of the MO-SDT process configured by the network device, or the first configured resource is a shared resource, and the shared resource is shared with the resources for transmitting the related information of the MO-SDT process configured by the network device.

[0245] Optionally, when the first configured resource is a shared resource, the processor 903 reads a computer program in the memory 901, and is for performing an operation of receiving a first indication sent from the terminal, and the first indication is for instructing that the first configured resource is used for the MT-SDT process.

[0246] Optionally, the first configuration message carries index information of a part of the CG resources for transmitting the related information of the MO-SDT process configured by the network device, or occupancy information of a part of the random access resources for transmitting the related information of the MO-SDT process configured by the network device.

[0247] Optionally, the first set resource is the CG resource, and the first set message includes at least one or more of the time domain information of the CG resource, the frequency domain information of the CG resource, the first payload size threshold of the CG resource, and the first channel threshold of the CG resource.

[0248] Optionally, the time domain position of the CG resource is determined based on the paging timing and the time offset information in the time domain information, or the period in the time domain information of the CG resource and the paging period corresponding to the deactivated state terminal satisfy a preset relationship.

[0249] Optionally, the first payload size threshold is smaller than the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or the first payload size threshold is a percentage value of the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or the first payload size threshold and the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device are independent of each other.

[0250] Optionally, the first channel threshold is equal to the second channel threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device.

[0251] As an option, the timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting related information of the MO-SDT process set by the network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting related information of the MO-SDT process set by the network device, or, The CG resource and the CG resource for transmitting related information of the MO-SDT process set by the network device share one timing advance timer and channel change threshold, wherein the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount.

[0252] As an option, the first configured resource is the random access resource, and the first configured message includes at least one or more of a random access channel timing resource, a scrambling resource for the random access channel timing, priority information between the MT-SDT process and the MO-SDT process, and priority information between the MT-SDT process and characteristics supported by other networks.

[0253] It should be noted that the network device according to the embodiment of the present disclosure can implement all the method steps of the embodiment of the above method with the network device as the execution body, and can achieve the same technical effects. Here, the same parts and the details of the beneficial effects in the method embodiment of this embodiment are omitted.

[0254] FIG. 10 is a schematic diagram of the structure of the small data transmission device according to the embodiment of the present disclosure. As shown in FIG. 10, the device includes at least It is for receiving a first setting message transmitted from a network device, the first setting message is for setting a first setting resource, and the first setting resource is for transmitting related information of a terminal terminate small data transmission MT-SDT process. A receiving unit 1001 When it is determined to trigger the MT-SDT process, in the first setting resource, a transmitting unit 1002 for transmitting a radio resource control RRC recovery request message to the network device.

[0255] Optionally, the first setting resource includes a configured grant CG resource or a random access resource.

[0256] Optionally, the first setting resource is the same as a part of the resources for transmitting related information of the MO-SDT process set by the network device, or The first setting message includes first indication information, and the first indication information is used to instruct multiplexing of a part of the resources for transmitting related information of the MO-SDT process set by the network device, or The first setting resource is a shared resource, and the shared resource is shared with the resources for transmitting related information of the MO-SDT process set by the network device.

[0257] Optionally, when the first setting resource is a shared resource, the transmitting unit 1002 specifically Is used to transmit a radio resource control RRC recovery request message and a first indication to the network device, and the first indication is for instructing that the first setting resource is used for the MT-SDT process.

[0258] As an option, the first setting message carries index information of some CG resources for transmitting related information of the MO-SDT process set by a network device, or occupancy rate information of some random access resources for transmitting related information of the MO-SDT process set by the network device.

[0259] As an option, the first setting resource is the CG resource, and the first setting message includes at least one or more of time domain information of the CG resource, frequency domain information of the CG resource, a first payload size threshold of the CG resource, and a first channel threshold of the CG resource.

[0260] As an option, the time domain position of the CG resource is determined based on paging timing and time offset information in the time domain information, or the period in the time domain information of the CG resource and the paging period corresponding to the deactivated state terminal satisfy a preset relationship.

[0261] As an option, the first payload size threshold is smaller than a second payload size threshold of the CG resource for transmitting related information of the MO-SDT process set by a network device, or the first payload size threshold is a percentage value of a second payload size threshold of the CG resource for transmitting related information of the MO-SDT process set by the network device, or the first payload size threshold and the second payload size threshold of the CG resource for transmitting related information of the MO-SDT process set by the network device are independent of each other.

[0262] As an option, the first channel threshold is equal to a second channel threshold of the CG resource for transmitting related information of the MO-SDT process set by a network device.

[0263] Optionally, the timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting related information of the MO-SDT process set by the network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting related information of the MO-SDT process set by the network device, or, the CG resource and the CG resource for transmitting related information of the MO-SDT process set by the network device share one timing advance timer and channel change threshold, wherein the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount.

[0264] Optionally, the first configured resource is the random access resource, and the first configured message includes at least one or more of a random access channel timing resource, a scrambling resource for the random access channel timing, priority information between the MT-SDT process and the MO-SDT process, and priority information between the MT-SDT process and characteristics supported by other networks.

[0265] Optionally, the apparatus before transmitting the RRC recovery request message, determines that there is non-small data transmission triggered by the terminal, and preferentially starts a random access process for the non-small data transmission triggered by the terminal, or, further includes a determination module used to determine that there is MO-SDT data transmission and preferentially execute the MO-SDT process.

[0266] FIG. 11 is a schematic diagram of the structure of the small data transmission device according to an embodiment of the present disclosure. As shown in FIG. 11, the device includes at least a transmission unit 1101 for transmitting a first setting message to a terminal, where the first setting message is for setting a first setting resource, and the first setting resource is for receiving related information of the MT-SDT process, and a first receiving unit 1102 for receiving an RRC recovery request message transmitted by the terminal in the first setting resource when it is determined to trigger the MT-SDT process.

[0267] Optionally, the first setting resource includes a CG resource or a random access resource.

[0268] Optionally, the first setting resource is the same as a part of the resources for transmitting related information of the MO-SDT process set by the network device, or the first setting message includes first indication information, and the first indication information is used to indicate multiplexing of a part of the resources for transmitting related information of the MO-SDT process set by the network device, or the first setting resource is a shared resource, and the shared resource is shared with the resources for transmitting related information of the MO-SDT process set by the network device.

[0269] Optionally, when the first setting resource is a shared resource, the device further includes a second receiving unit for receiving a first indication transmitted from the terminal, where the first indication is for indicating that the first setting resource is used for the MT-SDT process.

[0270] Optionally, the first configuration message carries index information of some CG resources for transmitting related information of the MO-SDT process, which is configured by the network device, or occupancy rate information of some random access resources for transmitting related information of the MO-SDT process, which is configured by the network device.

[0271] Optionally, the first configuration resource is the CG resource, and the first configuration message includes at least one or more of the time domain information of the CG resource, the frequency domain information of the CG resource, the first payload size threshold of the CG resource, and the first channel threshold of the CG resource.

[0272] Optionally, the time domain position of the CG resource is determined based on the paging timing and the time offset information in the time domain information, or the period in the time domain information of the CG resource and the paging period corresponding to the deactivated terminal satisfy a preset relationship.

[0273] Optionally, the first payload size threshold is smaller than the second payload size threshold of the CG resource for transmitting related information of the MO-SDT process, which is configured by the network device, or the first payload size threshold is a percentage value of the second payload size threshold of the CG resource for transmitting related information of the MO-SDT process, which is configured by the network device, or the first payload size threshold and the second payload size threshold of the CG resource for transmitting related information of the MO-SDT process, which is configured by the network device, are independent of each other.

[0274] Optionally, the first channel threshold is equal to the second channel threshold of the CG resource for transmitting related information of the MO-SDT process, which is configured by the network device.

[0275] Optionally, the timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting the relevant information of the MO-SDT process set by the network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting the relevant information of the MO-SDT process set by the network device, or, The CG resource and the CG resource for transmitting the relevant information of the MO-SDT process set by the network device share one timing advance timer and channel change threshold, Here, the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount.

[0276] Optionally, the first set resource is the random access resource, and the first set message includes at least one or more of a random access channel timing resource, a scrambling resource for the random access channel timing, priority information between the MT-SDT process and the MO-SDT process, and priority information between the MT-SDT process and the characteristics supported by other networks.

[0277] The methods and apparatuses according to the embodiments of the present disclosure are based on the concept of the same application, and since the principles for solving the problems of the methods and apparatuses are similar, the implementations of the apparatuses and methods can be referred to each other, and the overlapping points will not be described.

[0278] Note that the division of units in the embodiments of the present disclosure is schematic and is only a logical function division. In actual implementation, there may be other division methods. Also, in each embodiment of the present disclosure, each functional unit may be integrated into one processing unit, or each unit may physically exist alone, or two or more units may be integrated into one unit. The above integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0279] If the above integrated unit is realized in the form of a software functional unit and is 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 disclosure, in its essence, or the part contributing to the related technology, or all or part of the technical solution, may be embodied in the form of a software product. The 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 (Processor) to execute all or part of the steps of the methods described in each embodiment of the present disclosure. The storage medium includes various media capable of storing program codes, such as a USB disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0280] Note that the above device according to the embodiments of the present disclosure can realize all the method steps realized by the embodiments of the above method and can achieve the same technical effects. Here, the same parts and the details of the beneficial effects in the method embodiments of the present embodiment are omitted.

[0281] On the other hand, the embodiments of the present disclosure further provide a processor-readable storage medium storing a computer program for causing a processor to execute the small data transmission method according to each of the above embodiments. The method, for example, Receiving a first configuration message sent from a network device, wherein the first configuration message is for configuring a first configuration resource, and the first configuration resource is for transmitting related information of a terminal terminate small data transmission MT-SDT process; and when it is determined to trigger the MT-SDT process, transmitting a radio resource control RRC recovery request message to the network device in the first configuration resource. Or, Transmitting a first configuration message to a terminal, wherein the first configuration message is for configuring a first configuration resource, and the first configuration resource is for receiving related information of the MT-SDT process; and when it is determined to trigger the MT-SDT process, receiving an RRC recovery request message transmitted by the terminal in the first configuration resource.

[0282] The processor-readable storage medium may be any available medium or data storage device accessible by the processor, including but not limited to magnetic memory (such as flexible disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical memory (such as CDs, DVDs, BDs, HVDs, etc.), semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drives (SSD)), etc.

[0283] As will be understood by those skilled in the art, embodiments of the present disclosure can be provided as a method, system, or computer program product. Accordingly, the present disclosure can adopt a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. And the present disclosure can adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to magnetic disk memory, optical memory, etc.) containing computer-usable program code.

[0284] This disclosure will be described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be realized by computer-executable instructions. These computer-executable instructions are provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that an apparatus for realizing the functions specified in one or more flows in the flowchart and / or one or more blocks in the block diagram is generated by the instructions executed by the computer or other programmable data processing device processor.

[0285] These processor-executable instructions can also be stored in a processor-readable memory capable of causing a computer or other programmable data processing device to operate in a specific manner, and a product including instruction means can be generated by the instructions stored in the processor-readable memory. The instruction means realizes the functions specified in one or more flows in the flowchart and / or one or more blocks in the block diagram.

[0286] These processor-executable instructions can also be loaded into a computer or other programmable data processing device to cause a series of operation steps to be executed on the computer or other programmable device to generate a process implemented on the computer. Thereby, the instructions executed on the computer or other programmable device provide steps for realizing the functions specified in one or more flows in the flowchart and / or one or more blocks in the block diagram.

[0287] Regardless, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these changes and modifications to the present disclosure are within the scope of the claims of the present disclosure and its equivalent technical scope, the present disclosure is also intended to include these changes and modifications.

Claims

1. Receiving a first configuration message transmitted from a network device, where the first configuration message is for configuring a first configuration resource, and the first configuration resource is for transmitting related information of a terminal termination small data transmission MT-SDT process; When it is determined to trigger the MT-SDT process, transmitting a radio resource control RRC recovery request message to the network device in the first configuration resource. A small data transmission method comprising the above.

2. The first configuration resource includes a configuration grant CG resource or a random access resource. The small data transmission method according to claim 1.

3. The first configuration resource is the same as a part of the resources for transmitting related information of a mobile originated small data transmission MO-SDT process triggered by a terminal and configured by a network device, or The first configuration message includes first indication information, and the first indication information is used to indicate multiplexing of a part of the resources for transmitting related information of the MO-SDT process configured by the network device, or The first configuration resource is a shared resource, and the shared resource is shared with the resources for transmitting related information of the MO-SDT process configured by the network device. The small data transmission method according to claim 1.

4. When the first configuration resource is a shared resource, transmitting a radio resource control RRC recovery request message to the network device includes Transmitting a radio resource control RRC recovery request message and second indication information to the network device, where the second indication information is for indicating that the first configuration resource is used for the MT-SDT process. The small data transmission method according to claim 3.

5. The first configuration message carries index information of a part of the CG resources for transmitting related information of the MO-SDT process configured by the network device, or occupancy information of a part of the random access resources for transmitting related information of the MO-SDT process configured by the network device. The small data transmission method according to claim 3.

6. The first set resource is the CG resource, and the first set message includes the time domain information of the CG resource, and the frequency domain information of the CG resource, and the first payload size threshold of the CG resource, and the first channel threshold of the CG resource, and at least one or more of them are included The small data transmission method according to claim 2.

7. The time domain position of the CG resource is determined based on the paging timing and the time offset information in the time domain information of the CG resource, and / or the period in the time domain of the CG resource and the paging period corresponding to the deactivated terminal satisfy a preset relationship The small data transmission method according to claim 6.

8. The first payload size threshold is smaller than the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or The first payload size threshold is a percentage value of the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or The first payload size threshold and the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device are independent of each other The small data transmission method according to claim 6.

9. The first channel threshold is equal to the second channel threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device The small data transmission method according to claim 6.

10. The timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting the related information of the MO-SDT process set by the network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or The CG resource and the CG resource for transmitting the related information of the MO-SDT process set by the network device share one timing advance timer and channel change threshold Here, the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount. The small data transmission method according to claim 6.

11. The first set resource is the random access resource, and the first set message includes a random access channel timing resource, a scrambling resource for the random access channel timing, priority information between the MT-SDT process and the MO-SDT process, and at least one or more of priority information between the MT-SDT process and characteristics supported by other networks. The small data transmission method according to claim 2.

12. Before transmitting the RRC recovery request message, the method determines that there is non-small data transmission triggered by the terminal, and preferentially starts a random access process for the non-small data transmission triggered by the terminal, or determines that there is MO-SDT data transmission, and further includes preferentially executing the MO-SDT process. The small data transmission method according to claim 1.

13. Transmitting a first set message to the terminal, where the first set message is for setting a first set resource, and the first set resource is for receiving related information of the MT-SDT process, and receiving an RRC recovery request message transmitted by the terminal in the first set resource.

14. The first set resource is the same as a part of the resource set by the network device for transmitting related information of the MO-SDT process, or the first set message includes first indication information, and the first indication information is used to indicate multiplexing a part of the resource set by the network device for transmitting related information of the MO-SDT process, or the first set resource is a shared resource, and the shared resource is shared with the resource set by the network device for transmitting related information of the MO-SDT process. The small data transmission method according to claim 13.

15. When the first set resource is a shared resource, the method Further comprising receiving second instruction information transmitted from the terminal, wherein the second instruction information is for instructing that the first set resource is used for the MT-SDT process The small data transmission method according to claim 14

16. Including a memory, a transceiver, and a processor The memory is for storing a computer program, the transceiver is for transmitting and receiving data under the control of the processor, and the processor reads the computer program in the memory Receiving a first configuration message transmitted from a network device, wherein the first configuration message is for configuring a first set resource, and the first set resource is for transmitting related information of a terminal-terminated small data transmission MT-SDT process A terminal for performing operations including, when it is determined to trigger an MT-SDT process, transmitting a radio resource control RRC recovery request message to the network device in the first set resource

17. The first set resource includes a configuration grant CG resource or a random access resource The terminal according to claim 16

18. The first set resource is the same as a part of the resources for transmitting related information of a mobile-originated small data transmission MO-SDT process triggered by the terminal and configured by the network device, or The first configuration message includes first instruction information, and the first instruction information is used for instructing to multiplex a part of the resources for transmitting related information of the MO-SDT process configured by the network device, or The first set resource is a shared resource, and the shared resource is shared with the resources for transmitting related information of the MO-SDT process configured by the network device The terminal according to claim 16

19. When the first set resource is a shared resource, transmitting a radio resource control RRC recovery request message to the network device is Transmitting a Radio Resource Control (RRC) recovery request message and second indication information to the network device, wherein the second indication information is for indicating that the first configured resource is used for the MT-SDT process The terminal according to claim 18

20. The first configuration message carries index information of some CG resources for transmitting related information of the MO-SDT process configured by the network device, or occupancy rate information of some random access resources for transmitting related information of the MO-SDT process configured by the network device The terminal according to claim 18

21. The first configured resource is the CG resource, and the first configuration message includes time domain information of the CG resource, frequency domain information of the CG resource, a first payload size threshold of the CG resource, and at least one or more of a first channel threshold of the CG resource The terminal according to claim 17

22. The time domain position of the CG resource is determined based on paging timing and time offset information in the time domain information of the CG resource, and / or the period in the time domain of the CG resource and the paging period corresponding to the inactive state terminal satisfy a preset relationship The terminal according to claim 21

23. The first payload size threshold is smaller than a second payload size threshold of the CG resource for transmitting related information of the MO-SDT process configured by the network device, or The first payload size threshold is a percentage value of a second payload size threshold of the CG resource for transmitting related information of the MO-SDT process configured by the network device, or The first payload size threshold and the second payload size threshold of the CG resource for transmitting related information of the MO-SDT process configured by the network device are independent of each other The terminal according to claim 21

24. The first channel threshold is equal to a second channel threshold of the CG resource for transmitting related information of the MO-SDT process configured by the network device The terminal according to claim 21

25. The timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting the relevant information of the MO-SDT process set by the network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting the relevant information of the MO-SDT process set by the network device, or the CG resource and the CG resource for transmitting the relevant information of the MO-SDT process set by the network device share one timing advance timer and channel change threshold, wherein the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount The terminal according to claim 21.

26. The first configured resource is the random access resource, and the first configured message includes a random access channel timing resource, a scrambling resource for the random access channel timing, priority information between the MT-SDT process and the MO-SDT process, priority information between the MT-SDT process and the characteristics supported by other networks, and includes at least one or a plurality of them The terminal according to claim 17.

27. Before transmitting the RRC recovery request message, the processor reads the computer program in the memory, determines that there is non-small data transmission triggered by the terminal, and preferentially starts a random access process for the non-small data transmission triggered by the terminal, or determines that there is MO-SDT data transmission, and further executes an operation including preferentially executing the MO-SDT process The terminal according to claim 16.

28. including a memory, a transceiver, and a processor, the memory is for storing a computer program, the transceiver is for transmitting and receiving data under the control of the processor, and the processor reads the computer program in the memory, To send a first configuration message to a terminal, where the first configuration message is for configuring a first configuration resource, and the first configuration resource is for receiving related information of an MT-SDT process A network device for performing an operation including receiving an RRC recovery request message sent by the terminal in the first configuration resource [

29. ] The first configuration resource is the same as a part of the resources for transmitting related information of an MO-SDT process configured by a network device, or The first configuration message includes first indication information, and the first indication information is used to instruct multiplexing of a part of the resources for transmitting related information of an MO-SDT process configured by a network device, or The first configuration resource is a shared resource, and the shared resource is shared with the resources for transmitting related information of an MO-SDT process configured by a network device The network device according to claim 28 [

30. ] When the first configuration resource is a shared resource, the processor reads a computer program in the memory For further performing an operation including receiving second indication information sent from the terminal, where the second indication information is for instructing that the first configuration resource is used for the MT-SDT process The network device according to claim 29 [

31. ] For receiving a first configuration message sent from a network device, where the first configuration message is for configuring a first configuration resource, and the first configuration resource is for transmitting related information of a terminal terminate small data transmission MT-SDT process, a receiving unit A small data transmission device including a transmitting unit for transmitting a radio resource control RRC recovery request message to the network device in the first configuration resource when it is determined to trigger an MT-SDT process [

32. ] The first configuration resource includes a configuration grant CG resource or a random access resource The small data transmission device according to claim 31 [

33. ] The first set resource is the same as part of the resources for transmitting related information of the small data transmission MO-SDT process triggered by the terminal, which is set by the network device, or The first set message includes first indication information, and the first indication information is used to instruct multiplexing of part of the resources for transmitting related information of the MO-SDT process, which is set by the network device, or The first set resource is a shared resource, and the shared resource is shared with the resources for transmitting related information of the MO-SDT process, which is set by the network device The small data transmission device according to claim 31.

34. When the first set resource is a shared resource, the transmitting unit further is used to transmit a radio resource control RRC recovery request message and second indication information to the network device, and the second indication information is for instructing that the first set resource is used for the MT-SDT process The small data transmission device according to claim 33.

35. The first set message carries index information of part of the CG resources for transmitting related information of the MO-SDT process, which is set by the network device, or occupancy rate information of part of the random access resources for transmitting related information of the MO-SDT process, which is set by the network device The small data transmission device according to claim 33.

36. The first set resource is the CG resource, and the first set message includes time domain information of the CG resource, and frequency domain information of the CG resource, and the first payload size threshold of the CG resource, and at least one or more of the first channel threshold of the CG resource are included The small data transmission device according to claim 32.

37. The time domain position of the CG resource is determined based on paging timing and time offset information in the time domain information of the CG resource, and / or the period in the time domain of the CG resource and the paging period corresponding to the inactive state terminal satisfy a preset relationship The small data transmission device according to claim 36.

38. The first payload size threshold is smaller than the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or The first payload size threshold is a percentage value of the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or The first payload size threshold and the second payload size threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device are independent of each other The small data transmission device according to claim 36.

39. The first channel threshold is equal to the second channel threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device The small data transmission device according to claim 36.

40. The timing advance timer of the CG resource is the same as the timing advance timer of the CG resource for transmitting the related information of the MO-SDT process set by the network device, and the channel change threshold of the CG resource is the same as the channel change threshold of the CG resource for transmitting the related information of the MO-SDT process set by the network device, or The CG resource and the CG resource for transmitting the related information of the MO-SDT process set by the network device share one timing advance timer and channel change threshold, wherein the timing advance timer and the channel change threshold are used to determine the effectiveness of the timing advance amount The small data transmission device according to claim 36.

41. The first set resource is the random access resource, and the first set message includes a random access channel timing resource, and a scrambling resource for the random access channel timing, and priority information between the MT-SDT process and the MO-SDT process, and priority information between the MT-SDT process and the characteristics supported by other networks, at least one or a plurality of which are included The small data transmission device according to claim 32.

42. Before transmitting the RRC recovery request message, the device determines that there is non-small data transmission triggered by the terminal, and preferentially starts a random access process for the non-small data transmission triggered by the terminal, or determines that there is MO-SDT data transmission, and preferentially executes the MO-SDT process The small data transmission device according to claim 31.

43. For transmitting a first setting message to a terminal, the first setting message is for setting a first setting resource, and the first setting resource is for receiving related information of an MT-SDT process, a transmission unit A small data transmission device including: a first receiving unit that receives an RRC recovery request message transmitted by the terminal in the first setting resource when it is determined to trigger an MT-SDT process.

44. A computer-readable storage medium storing a computer program for causing a computer to execute the method according to any one of claims 1 to 12 or the method according to any one of claims 13 to 15.

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