Configuration methods for connectionless transmission, and storage medium and electronic apparatus

Abstract

Provided in the embodiments of the present application are configuration methods for connectionless transmission, and a storage medium and an electronic apparatus. A method comprises: receiving a connectionless transmission request sent by a user equipment (UE); and in response to the connectionless transmission request, generating a contention resolution result of the UE, sending the contention resolution result to the UE, and establishing a signaling radio bearer connection with the corresponding UE on the basis of the resolution result, wherein configurations of at least some parameters of the signaling radio bearer connection are common parameter configurations or preset value configurations.

Description

Connectionless transmission configuration methods, storage media and electronic devices

[0001] Cross-reference to related applications

[0002] This disclosure is based on and claims priority to Chinese Patent Application No. 2024116433961, filed on November 15, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of communications, and more specifically, to a configuration method, storage medium, electronic device, and computer program product for connectionless transmission. Background Technology

[0004] 6G networks will be integrated networks of communication, sensing, computing, and intelligence, requiring a large number of devices to connect to the network. These IoT devices are characterized by low cost and low power consumption. Although Small Data Transmission (SDT) technology was introduced in Release 17 (the 17th version of the wireless communication standard specification of 3GPP), the bearers used for data transmission are configured with parameters related to Centralized Units (CUs) and Distributed Units (DUs). Furthermore, when the device releases the Radio Resource Control (RRC) connection, the terminal and network sides need to store the Radio Bearer Identifier (RB ID) used by SDT and related configurations to facilitate the next data transmission request by the UE. This is not conducive to the energy-saving requirements of IoT terminals. Summary of the Invention

[0005] This application provides a connectionless transmission configuration method, storage medium, electronic device, and computer program product to at least solve the problem in the related art where the large number of transmission configuration parameters during small data transmission by a terminal (User Equipment, UE) leads to high RRC signaling overhead.

[0006] According to one embodiment of this application, a configuration method for connectionless transmission is provided, comprising:

[0007] The system receives a connectionless transmission request sent by the UE; in response to the connectionless transmission request, it generates a contention resolution result for the UE, sends the contention resolution result to the UE, and establishes a signaling radio bearer connection with the corresponding UE based on the resolution result; wherein, at least some parameters of the signaling radio bearer connection are configured as common parameters or preset values.

[0008] According to another embodiment of this application, a configuration method for connectionless transmission is provided, comprising:

[0009] Send a connectionless transmission request to the base station; receive the contention resolution result sent by the base station and establish a signaling radio bearer connection with the base station; wherein, at least some parameters of the signaling radio bearer connection are configured as common parameters or preset values.

[0010] According to yet another embodiment of this application, a base station is also provided, which is used to implement the steps in any of the above method embodiments.

[0011] According to yet another embodiment of this application, a terminal is also provided, which is used to implement the steps in any of the above method embodiments.

[0012] According to yet another embodiment of this application, a communication system is also provided, which is used to implement the steps in any of the above method embodiments.

[0013] According to yet another embodiment of this application, a computer-readable storage medium is also provided, in which a computer program is stored, wherein the computer program is configured to perform the steps in any of the above method embodiments when it is run.

[0014] According to yet another embodiment of this application, an electronic device is also provided, including a memory and a processor, wherein a computer program is stored in the memory and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0015] According to yet another embodiment of this application, a computer program product is also provided, including a computer program that, when executed by a processor, implements the steps in any of the above method embodiments. Attached Figure Description

[0016] Figure 1 is a hardware structure block diagram of the mobile terminal operating in the embodiment of the method of this application;

[0017] Figure 2 is a flowchart of a connectionless transmission configuration method according to an embodiment of this application;

[0018] Figure 3 is a flowchart of a connectionless transmission configuration method according to another embodiment of this application;

[0019] Figure 4 is a schematic diagram of the parameter configuration process when a UE initiates a data service according to an embodiment of this application;

[0020] Figure 5 is a schematic diagram of the parameter configuration process when a UE receives a paging according to an embodiment of this application;

[0021] Figure 6 is a structural block diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0022] The embodiments of this application will be described in detail below with reference to the accompanying drawings and examples.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0024] In the existing protocol, in order to support SDT, 3GPP added the configuration content sdt-Config-r17 to the suspendConfig of the RRCRelease message. When the UE establishes a Radio Resource Control (RRC) connection, it needs to save the dedicated RB ID of SDT (sdt-DRB-List-r17). The specific configuration of this RB is configured through RRC. The RRC configuration has many parameters, resulting in a large RRC signaling overhead.

[0025] Based on the aforementioned technical problems, this application proposes a connectionless transmission configuration method. The technical concept is that when a UE needs to transmit data, the network configures some parameters of the bearer used to send data to the UE as common parameters or preset values, thereby reducing network signaling configuration overhead and enabling the device to transmit data with less signaling overhead.

[0026] The method embodiments provided in this application can be executed in a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, FIG1 is a hardware structure block diagram of the mobile terminal in which the method embodiments of this application are run. As shown in FIG1, the mobile terminal may include one or more (only one is shown in FIG1) processors 102 (processor 102 may include, but is not limited to, processing devices such as microprocessors MCU or programmable logic devices FPGA) and a memory 104 for storing data. The mobile terminal may also include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that the structure shown in FIG1 is only illustrative and does not limit the structure of the mobile terminal. For example, the mobile terminal may also include more or fewer components than shown in FIG1, or have a different configuration than shown in FIG1.

[0027] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the connectionless transmission configuration method in this embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thus implementing the above-described method. The memory 104 may include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0028] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module used for wireless communication with the Internet.

[0029] Example 1

[0030] This embodiment provides a configuration method for connectionless transmission. Figure 2 is a flowchart of the configuration method for connectionless transmission according to an embodiment of this application. As shown in Figure 2, the process includes the following steps:

[0031] Step S201: Receive a connectionless transmission request sent by the terminal UE.

[0032] The embodiments of this application can be applied to the network side, such as a base station. This application embodiment is illustrated using the transmission of small amounts of data as an example.

[0033] This application uses a UE-initiated connectionless transmission (CFT) as an example to illustrate the resource configuration process provided by the network side to the UE under CFT. CFT can refer to the transmission of small amounts of data between the UE and the base station in a connectionless state.

[0034] For example, when a UE has a small amount of data to transmit, the UE can initiate a Connectionless Transmission Request (CFTRequest), that is, the UE attempts to send data in a disconnected or idle state.

[0035] As an example, a UE's request can be sent via the Random Access Channel (RACH), which may include the UE's identification information (such as the Cell-Radio Network Temporary Identifier (C-RNTI) or Temp C-RNTI) and an indication of the requested data.

[0036] Step S202: In response to the connectionless transmission request, generate a contention resolution result for the UE, send the contention resolution result to the UE, and establish a signaling radio bearer connection with the corresponding UE based on the resolution result; wherein, at least some parameters of the signaling radio bearer connection are configured as common parameter configurations or preset value configurations.

[0037] For example, after receiving a CFT request from the UE, the network side can respond to this request and establish a dedicated Signaling Radio Bearer x (SRBx) with the UE for small data transmission. The SRBx can be used to transmit control plane information, such as security parameters and RRC signaling.

[0038] As an example, the establishment of SRBx can be used to carry subsequent control information and signaling information required for establishing security protocols. In traditional connection establishment processes, the configuration parameters of SRBs (SRB1 or SRB2) may require detailed personalized configuration via RRC configuration messages, including parameters for the Packet Data Convergence Protocol (PDCP), Service Data Adaptation Protocol (SDAP), Radio Link Control (RLC), and Medium Access Control (MAC) layers. However, in this embodiment, some parameters of SRBx are configured as common parameters or preset values, thereby reducing signaling overhead and facilitating rapid data transmission from the device.

[0039] In this application embodiment, at least some parameters of the SRBx connection are configured as common parameters or preset values.

[0040] It should be noted that common parameters can refer to configuration parameters shared by all UEs or specific types of UEs (such as UEs supporting connectionless transmission) in the network. These parameters are broadcast at the cell level or in a wider network area and can be used to guide UEs in initial access, channel detection, resource allocation, etc. In the System Information Block (SIB) SIB1, common parameter configuration can provide general guidance for all UEs to perform initial access and channel operation, including common parameters for channels such as the Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Physical Uplink Shared Channel (PUSCH), and Physical Uplink Control Channel (PUCCH), enabling UEs to know how to transmit data even without establishing an RRC connection.

[0041] Preset values ​​(also known as default values): These refer to a set of preset parameter values ​​that the network or terminal will use when a specific configuration parameter is not explicitly specified or sent. These parameter values ​​are usually defined in protocol standards to simplify configuration or provide basic functional support when there are no explicit instructions. In connectionless transmission scenarios of IoT devices, in order to reduce signaling overhead and terminal power consumption, some configuration parameters will use default values, so that it is not necessary to determine these parameters through signaling interaction every time a service is initiated, but to directly use the values ​​specified in the protocol.

[0042] For example, when establishing an SRBx connection, the network side can use the default Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), and Medium Access Control (MAC) parameters. After the UE sends a CFTRequest, the network side can establish an SRBx connection by default without explicitly negotiating its parameters through signaling. Instead, it can quickly establish a connection using a predefined, simplified, or default parameter configuration, which simplifies the signaling process, reduces signaling overhead, and thus reduces UE power consumption.

[0043] As an example, after configuring SRBx on the network side, the UE can be notified through mechanisms such as RRC configuration or MAC CE (Medium Access Control Control Element). In this way, the UE can transmit control plane signaling on SRBx, including RRC configuration confirmation, security procedures, and CFT-related signaling interactions.

[0044] As an example, MAC CE is a mechanism used in the MAC layer to control information transmission, and can be used in various situations such as contention resolution, scheduling requests, and uplink authorization. On the network side, the base station (gNB) can identify the UE by detecting the random access preamble and send a MAC CE. The MAC CE can contain contention resolution information, such as the UE Contention Resolution Identity. In CFT scenarios, the UE can initiate data transmission without establishing a complete RRC connection, but when multiple UEs use the same resources simultaneously, a contention resolution process needs to be performed.

[0045] As an example, when multiple UEs attempt to access the network simultaneously, they may use the same random access resources, leading to contention. To determine which UE can continue the access process, the network identifies and selects the UE through a contention resolution process. This process typically involves the allocation of a temporary C-RNTI for the UE and the transmission of the contention resolution result based on this C-RNTI.

[0046] In one exemplary embodiment, before receiving the connectionless transmission CFT request sent by the terminal UE, the method further includes:

[0047] System Information Block (SIB) information is generated and broadcast to the UE; the SIB information includes physical layer resource parameters configured by common parameters.

[0048] In this embodiment of the application, in order to reduce network signaling configuration overhead, when the network side configures the bearer used by the UE to send data, some configurations can use default values. For example, the physical layer configurations of SRB and Data Radio Bearer (DRB) both use the common parameters configured in the System Information Block (SIB).

[0049] For example, the SIB may include various parameters required for the UE to perform initial access, cell selection and reselection, and subsequent radio resource management. In a CFT scenario, the physical layer resource parameters configured by the common parameters carried in the SIB information can support data transmission by the UE in a connectionless state.

[0050] As an example, the network-side Distributed Unit (DU) can generate SIB information and broadcast it to the cell. The UE can receive the SIB information during cell search and downlink synchronization after power-on.

[0051] As an example, the common configuration of physical layer resource parameters can be used to support small data transmission. The common configuration of physical layer resource parameters reduces the signaling interaction between the UE and the network side during CFT transmission, enabling the UE to utilize these pre-configured resources for data transmission more quickly.

[0052] In one exemplary embodiment, the common parameter configuration in the SIB information includes at least one of the following physical layer resource parameters: Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Random Access Channel (RACH), Physical Uplink Control Channel (PUCCH), and Physical Uplink Shared Channel (PUSCH).

[0053] For example, Table 1 is the SIB information configuration table. The physical resource parameters configured in the system information block SIB are shown in Table 1, including: PDCCH common parameter configuration, PDSCH common parameter configuration, RACH common parameter configuration, PUSCH common parameter configuration, PUCCH common parameter configuration, BCCH configuration, PCCH configuration, and ResourceArea resource usage area configuration.

[0054] Table 1

[0055] As an example, based on the above parameter configuration, the UE can determine the physical layer resources of each channel to be used.

[0056] For example, the common parameter configuration of PDCCH can be used by the UE to detect the period and related parameters of PDCCH during subsequent data transmission; the common parameter configuration of PDSCH and PUSCH can be used to determine the physical resources for data transmission; and the common parameter configuration of RACH can be used for resource selection when the UE initiates a random access request.

[0057] In one exemplary embodiment, the configuration of the physical layer resource parameters corresponding to the SRBx connection is the common parameter configuration of the corresponding physical layer resource parameters in the SIB information.

[0058] For example, in order to reduce the number of signaling interactions and energy consumption of IoT devices when transmitting small data, and to simplify the configuration process on the network side, the physical layer resource parameters used by SRBx connections can directly reference the common parameters configured in the SIB information.

[0059] In one exemplary embodiment, some parameters of SRBx include at least one of the following: Service Data Adaptation Protocol (SDAP) parameters, Packet Data Convergence Protocol (PDCP) parameters, Radio Link Control (RLC) parameters, and Media Access Control (MAC) parameters.

[0060] As an example, some high-level parameters of SRBx, such as PDCP, RLC, and MAC layer parameters, can use default configurations or preset values.

[0061] Specifically, PDCP parameters, such as sequence number size and header compression configuration, can use default values ​​to reduce the size of configuration signaling.

[0062] Business data adaptation protocol (SDAP) parameters include, for example, associated PDU session (PDU Session Association), uplink SDAP header (UL SDAP Header), downlink SDAP header (DL SDAP Header), and QoS mapping rules. In connectionless transmission, the configuration of SDAP parameters must ensure that data transmission meets business requirements and QoS standards. Default configurations can reduce signaling overhead while guaranteeing data transmission efficiency and quality.

[0063] RLC parameters, such as RLC mode (AM, UM, or TM) and maximum number of retransmissions, can use common or preset configurations to reduce signaling interactions.

[0064] MAC parameters, including Timing Advance (TA) configuration, Buffer Status Report (BSR) configuration, and Power Headroom Report (PHR) configuration, can also use common parameters to simplify the configuration process.

[0065] By using common parameters configured in the SIB and default or preset values ​​for some higher-layer parameters, SRBx connections can be established faster and more efficiently, reducing the number of signaling interactions between the UE and the network side, and lowering power consumption. This is particularly suitable for the low-power, high-speed data transmission requirements of IoT devices. At the same time, this configuration mechanism also reduces the configuration burden on the network side and improves the efficiency and flexibility of resource allocation.

[0066] In one exemplary embodiment, after broadcasting the SIB information to the UE, the method further includes:

[0067] Receive a random access request sent by the UE using the random access RA resource; wherein, the RA resource is a specific resource used for data transmission in the SIB information;

[0068] Based on the RA resources, it is determined that the UE is in connectionless transmission mode, and a random access response is sent to the UE in connectionless transmission mode.

[0069] The connectionless transmission configuration method of this application embodiment can be triggered by a random access request sent by the UE side.

[0070] For example, before receiving a connectionless transmission (CFT) request sent by a UE, the network side can identify the UE's transmission mode by using a random access request sent by the UE using random access (RA) resources, thereby ensuring that the network can effectively identify and support the UE's data transmission needs in a connectionless state.

[0071] As an example, SIB information can be broadcast periodically by the network side. SIB information includes the network's common configuration and RA resources used for CFT. RA resources can be configured to be dedicated to data transmission in connectionless transmission mode, and RA resources can be identified in the SIB so that the UE can quickly recognize and utilize them.

[0072] As an example, when a UE in a connectionless state needs to transmit data, it can send a random access request using the RA resource configured in the SIB. This random access request may include a random access preamble sequence, or carry uplink data or identification information for network identification. Upon receiving the UE's random access request, the network can determine whether the UE is in connectionless transmission mode based on the RA resource used. By having the UE send a random access request using a specific RA resource, the network can quickly identify the UE's connectionless transmission needs.

[0073] As an example, after determining that the UE is in connectionless transmission mode, the network side can send a Random Access Response (RAR) to the UE. The RAR may include, but is not limited to, the uplink grant (UL Grant) required for data transmission by the UE, and a temporary cell-radio network temporary identity (C-RNTI) for subsequent signaling interactions. In addition, the RAR may also contain other necessary information, such as time-frequency resources, preamble sequence responses, TA commands, etc., to ensure that the UE can successfully send a CFT request.

[0074] In one exemplary embodiment, after broadcasting the SIB information to the UE, the method further includes:

[0075] Send a paging request to the UE;

[0076] Receive a random access request sent by the UE using random access RA resources in accordance with a paging request; wherein, RA resources are specific resources used for data transmission in the SIB information;

[0077] Based on the RA resources, it is determined that the UE is in connectionless transmission mode, and a random access response is sent to the UE in connectionless transmission mode.

[0078] As an example, the connectionless transmission configuration method of this application embodiment supports UE triggering and can also support network-side triggering. For example, when downlink DL data arrives, the network side can inform the UE to initiate small data transmission through paging.

[0079] In one exemplary embodiment, the random access response carries an uplink grant and a temporary cell radio network temporary identifier assigned to the UE in connectionless transmission mode; wherein the uplink grant carries an indication of the UE's transport block size, the transport block size being greater than or equal to the size of the connectionless transmission request, and the connectionless transmission request and contention resolution result are scrambled using the temporary cell radio network temporary identifier.

[0080] As an example, after a UE initiates a random access request, the network side can send a Random Access Response (RAR) message containing, in addition to regular information (such as advance time command, uplink grant, etc.), an uplink grant. This uplink grant carries an indication of the UE's Transport Block (TB) size, which can be greater than or equal to the size of the connectionless transmission request. The TB size is predetermined based on the needs of the CFT scenario and can be greater than or equal to the size of the connectionless transmission request, used by the UE to subsequently send connectionless transmission requests or small amounts of data. Using a preset TB size to transmit data in CFT mode can reduce signaling overhead while ensuring that the UE has sufficient resources to send its request or data without having to go through a full connection establishment process.

[0081] As an example, the random access response can also carry a temp C-RNTI, which is a temporary identifier assigned to the UE by the network side. This identifier can be used to uniquely identify the UE for a short period of time before the contention resolution process is completed. In connectionless transmission mode, the use of temp C-RNTI avoids the need for a complete connection establishment and release process for each data transmission, thereby saving signaling resources and UE power consumption.

[0082] As an example, scrambling is a channel coding process that enhances data security and improves transmission robustness. In a CFT scenario, the UE's connectionless transmission request and contention resolution result can be scrambled using a temp C-RNTI during transmission. That is, the network side can use the temp C-RNTI as part of the scrambling sequence in the PDCCH sent to the UE, and the UE can also encode its uplink data according to the scrambling sequence provided by the network side. The scrambling mechanism ensures that only UEs with the correct temp C-RNTI can decode their PDCCH information, and also guarantees that the data sent by the UE can only be correctly decoded by the network side, thus ensuring the security and correctness of communication.

[0083] As an example, contention resolution is part of the random access procedure and is used to resolve conflicts caused by multiple UEs simultaneously using the same random access preamble sequence. Once a UE is confirmed by the network side through the contention resolution process, the temp C-RNTI is converted into the formal C-RNTI for subsequent communication, ensuring the uniqueness of the UE's identity during CFT transmission and the accuracy of subsequent resource allocation and signaling interactions.

[0084] In one exemplary embodiment, after establishing the SRBx connection, the method further includes:

[0085] Configure the centralized unit-related parameters of the data radio bearer parameters and the geographical area where the data radio bearer resources are effective. Establish the data radio bearer and send a radio resource control configuration message to the UE. The radio resource control configuration message carries the centralized unit-related parameters of the data radio bearer parameters and the geographical area where the data radio bearer resources are effective. The configuration of the distributed unit-related parameters of the data radio bearer parameters is either a common parameter configuration or a preset value configuration.

[0086] Receive data transmitted by the UE according to the DRB parameters in the RRC configuration message.

[0087] In the connectionless transmission (CFT) technology scenario of this application embodiment, the network side will perform a series of configuration and reconfiguration operations to support data transmission of the UE in a connectionless state.

[0088] As an example, the network side can configure DRB parameters related to the UE's Centralized Unit (CU) and the geographical area where resources corresponding to data radio bearers are effective. The CU can handle higher-level protocols, including but not limited to the Service Data Adaptation Protocol (SDAP) and Packet Data Convergence Protocol (PDCP) layers, which involve data processing, security, and adaptation functions. Within this geographical area, RRC configuration parameters are valid, and parameters configured in the SIB are also valid within this geographical area.

[0089] As an example, the network side can generate an RRC configuration message. This message only includes CU-related parameter configuration information and the geographical area where the data radio bearer's resources are effective. DU-related parameters will use common parameter configurations or preset values, and will not be included in the RRC configuration message, thus reducing signaling overhead. The network side can adjust these parameters according to the UE's CU parameter requirements, while simplifying DU parameter configuration by using common parameters or preset values, ensuring efficient data transmission and reasonable resource allocation.

[0090] For example, a Protocol Data Unit (PDB) session can be established during the service initiation process. Table 2 shows the RRC configuration signaling table. The signaling radio bearer (SRBx) connection can be established by default through a UE service initiation request, as shown in Table 2. The PDCP / RLC / MAC parameter configurations of the SRB can use default values, and the resource configurations used by the physical layer can use the common resource configurations in the SIB. The RRC configuration signaling only configures and establishes the DRB bearer. The SDAP and PDCP parameters of the DRB can be configured by default through the RRC configuration signaling, while the RLC and MAC parameters use default values. The resource configurations used by the physical layer are the same as those of the SRB, using the common resource configurations in the SIB information. Simultaneously, the geographical area where the resources are effective can be configured so that the parameters configured by RRC are effective within that geographical area.

[0091] Table 2

[0092] As an example, for parameters related to the UE's Distributed Unit (DU), the UE will use common parameter configurations or preset values. The DU layer involves physical and MAC layer processing, including resource allocation and scheduling. Using common parameters or preset values ​​can simplify the configuration process, reduce the need for personalized configuration for each UE, and thus reduce the network's processing burden and signaling overhead.

[0093] As an example, the UE can receive the DRB parameter configuration in the RRC signaling and use the configured radio resources for data transmission. The network side can receive the data transmitted by the UE according to the DRB parameters in the RRC configuration message. Due to the simplified DU parameter configuration, the UE can respond to the network side's resource indications more quickly, thereby improving the efficiency of data transmission.

[0094] In one exemplary embodiment, the physical layer resource parameters corresponding to the DRB parameters are the common parameter configurations of the physical layer resource parameters corresponding to the SIB information.

[0095] As an example, the physical layer resource parameters corresponding to DRB parameters can be configured directly by the UE using common parameters in the SIB information, without needing to be configured repeatedly in the RRC configuration message. That is, before data transmission, the UE can pre-set its physical layer resource parameters through the SIB information, reducing the frequency and amount of information exchanged in the RRC.

[0096] In one exemplary embodiment, the DU-related parameters of the DRB parameters include at least one of the following: Radio Link Control (RLC) parameters and Media Access Control (MAC) parameters.

[0097] As an example, DU-related parameters may include Radio Link Control (RLC) parameters and Medium Access Control (MAC) parameters. In this embodiment, preset values ​​or common parameters can be used for DU-related parameters to simplify configuration, avoiding the problem of increased network and device burden caused by personalized configuration of these parameters in IoT device scenarios where data transmission volume is small and frequent.

[0098] For example, RLC parameters can use default segmentation and reassembly rules to reduce personalized configuration for each UE; MAC parameters can use default scheduling policies and power control parameters to simplify the UE access process.

[0099] In one exemplary embodiment, the CU-related parameters of the DRB parameters include at least one of the following: Packet Data Convergence Protocol parameter PDCP and Service Data Adaptation Protocol parameter SDAP.

[0100] As an example, CU-related parameters may include Packet Data Convergence Protocol (PDCP) parameters, Service Data Adaptation Protocol (SDAP) parameters, etc. In this embodiment, preset values ​​or common parameters can be used for CU-related parameters to simplify configuration, avoiding the problem of increased network and device burden caused by personalized configuration of these parameters in IoT device scenarios where data transmission volume is small and frequent.

[0101] For example, PDCP parameters can use default sequence number size, header compression configuration, etc., to reduce the size of configuration signaling; SDAP parameters can use default associated PDU sessions and QoS mapping rules, etc., to reduce signaling overhead while ensuring the efficiency and quality of data transmission.

[0102] In this embodiment, a connectionless transmission request is sent by a UE (User Equipment); in response to the connectionless transmission request, a signaling radio bearer (SRBx) connection is established with the UE, a contention resolution result for the UE is generated, and the contention resolution result is sent to the UE through the control information unit (MAC CE) of the media access control layer based on the SRBx connection; wherein at least some parameters of the SRBx connection are configured as common parameters or preset values. This solves the problem in related technologies where the large number of transmission configuration parameters leads to high RRC signaling overhead when the UE transmits small data, reducing network signaling configuration overhead and enabling the device to transmit data with lower signaling overhead.

[0103] Example 2

[0104] In another embodiment of this application, a configuration method for connectionless transmission running on the aforementioned mobile terminal is provided. Figure 3 is a flowchart of the configuration method for connectionless transmission according to another embodiment of this application. As shown in Figure 3, the process includes the following steps:

[0105] Step S301: Send a connectionless transmission request to the base station;

[0106] Step S302: Receive the contention resolution result sent by the base station and establish a signaling radio bearer connection with the base station; wherein, at least some parameters of the signaling radio bearer connection are configured as common parameter configurations or preset value configurations.

[0107] This embodiment can be applied to the UE side to implement the connectionless transmission configuration method of this application embodiment.

[0108] The specific implementation process is similar to that of Embodiment 1 above, and will not be described in detail here.

[0109] In one exemplary embodiment, before sending a connectionless transmission request to the base station, the method further includes:

[0110] Receive SIB information broadcast by the base station; wherein, the SIB information includes physical layer resource parameters configured with common parameters.

[0111] In one exemplary embodiment, the configuration of the physical layer resource parameters corresponding to the SRBx connection is the common parameter configuration of the corresponding physical layer resource parameters in the SIB information.

[0112] In one exemplary embodiment, after receiving the SIB information broadcast by the base station, the method further includes:

[0113] The random access (RA) resource is used to send a random access request to the base station; where the RA resource is a specific resource in the SIB information used for data transmission.

[0114] Receive random access response sent by the base station.

[0115] In one exemplary embodiment, after receiving the SIB information broadcast by the base station, the method further includes:

[0116] Receive paging requests sent by the base station;

[0117] Based on the paging request, a random access request is sent using the random access RA resource; where the RA resource is a specific resource used for data transmission in the SIB information;

[0118] Receive random access response sent by the base station.

[0119] In one exemplary embodiment, the random access response carries an uplink grant and a temporary cell radio network temporary identifier assigned to the UE in connectionless transmission mode; wherein the uplink grant carries an indication of the UE's transport block size, the transport block size being greater than or equal to the size of the connectionless transmission request, and the connectionless transmission request and contention resolution result are scrambled using the temporary cell radio network temporary identifier.

[0120] In one exemplary embodiment, after establishing the signaling radio bearer connection, the method further includes:

[0121] Receive the radio resource control configuration message sent by the base station and establish a data radio bearer with the base station; wherein, the radio resource control configuration message carries the centralized unit related parameters of the data radio bearer parameters, the geographical area where the data radio bearer resources are effective, and the configuration of the distributed unit related parameters of the data radio bearer parameters is either a common parameter configuration or a preset value configuration.

[0122] Data is transmitted to the base station according to the DRB parameters in the RRC configuration message.

[0123] In one exemplary embodiment, the configuration of the physical layer resource parameters corresponding to the DRB parameters is the common parameter configuration of the corresponding physical layer resource parameters in the SIB information.

[0124] In one exemplary embodiment, the DU-related parameters of the DRB parameters include at least one of the following: Radio Link Control (RLC) parameters and Media Access Control (MAC) parameters.

[0125] In one exemplary embodiment, the CU-related parameters of the DRB parameters include at least one of the following: Packet Data Convergence Protocol (PDCP) parameters and Service Data Adaptation Protocol (SDAP) parameters.

[0126] In one exemplary embodiment, some parameters of the signaling radio bearer include at least one of the following: Packet Data Convergence Protocol (PDCP) parameters, Service Data Adaptation Protocol (SDAP) parameters, Radio Link Control (RLC) parameters, and Media Access Control (MAC) parameters.

[0127] In one exemplary embodiment, the common parameter configuration in the SIB information includes at least one of the following physical layer resource parameters: Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Random Access Channel (RACH), Physical Uplink Control Channel (PUCCH), and Physical Uplink Shared Channel (PUSCH).

[0128] In this embodiment, a connectionless transmission request is sent to the base station; the contention resolution result sent by the base station through the Control Information Unit (MAC CE) of the Media Access Control layer based on the SRBx connection is received; wherein at least some parameters of the SRBx connection are configured as common parameters or preset values. This solves the problem in related technologies where the large number of transmission configuration parameters leads to high RRC signaling overhead when the UE performs small data transmission, reducing network signaling configuration overhead and enabling the device to transmit data with lower signaling overhead.

[0129] The following two examples further illustrate the configuration of connectionless transmission in the embodiments of this application.

[0130] Example 1

[0131] Parameter configuration process when a UE initiates a data service.

[0132] Figure 4 is a schematic diagram of the parameter configuration process when a UE initiates a data service according to an embodiment of this application. As shown in Figure 4, the specific steps include:

[0133] Step 401: The network-side xNB sends SIB information;

[0134] For example, the DU on the network side can generate SIB information and broadcast it to the UE. The configuration of the uplink and downlink common configuration parameters DownlinkConfigCommonSIB / UplinkConfigCommonSIB in SIB1 can be used as the physical layer resource parameter configuration for small data transmission.

[0135] For example, in order to facilitate the configuration of the PDCCH detection period for subsequent data transmission, a dedicated search space for CFT PDCCH can be configured for CFT users.

[0136] For example, for a UE that supports CFT, the UE can power on to perform cell search and downlink synchronization, receive the SIB1 of the cell, camp in the cell that supports CFT, obtain and save the parameters used for small data transmission.

[0137] Step 402, the UE initiates a random access (RA) request;

[0138] For example, the UE can use the RA resource specific to small data transmission configured in the SIB to send a random access request.

[0139] Step 403, network-side random access RA response;

[0140] For example, the network side identifies the user as a connectionless transport CFT user through the RA resource of the random access request. The network side sends a random access response to the UE, allocates a larger TBSize through the UL Grant uplink authorization in the random access RA response, the authorization size can accommodate the request, and allocates a temporary cell radio network temporary identifier temp C-RNTI to the UE in Msg2.

[0141] Step 404, the UE initiates a CFT request;

[0142] For example, a CFT request may at least carry a UE ID+legacy request message.

[0143] For example, a CFT request can establish a CFT-specific SRBx connection.

[0144] For example, the SDAP / PDCP / RLC / MAC parameters of the SRBx connection can use the default configuration, and the specific parameter configuration values ​​can be predefined in the RRC protocol. This SRBx connection can be used to carry out subsequent processes such as secure establishment between the RAN and UE.

[0145] Step 405: The network side sends the contention resolution result;

[0146] For example, when multiple UEs attempt to access the network simultaneously, they may use the same random access resources, which can lead to contention. In order to determine which UE can continue the access process, the network side can identify and select the UE through a contention resolution process.

[0147] For example, the network side can use MAC CE to send the contention resolution result. This contention resolution result can be sent using the legacy UE Contention Resolution Identity MAC CE, scrambled with temp C-RNTI. After a successful contention, the temp C-RNTI can be updated to C-RNTI, and subsequent air interfaces can use C-RNTI scrambling. At this point, the SRBx bearer between the network side and the UE is also established.

[0148] Step 406: The network side sends an RRC configuration message;

[0149] For example, the network side can configure the CU-related parameters SDAP / PDCP carried in the RRC configuration message for small data transmission, the DU-related RLC / MAC parameters can use the default configuration, and the physical layer PHY-related parameters can use the common parameters in the SIB. Therefore, the RRC configuration message can only carry the radio bearer configuration RadioBearerConfig, and only configure the DRB parameters (i.e., SDAP and PDCP) for small data transmission.

[0150] Step 407: UE-side RRC configuration complete.

[0151] For example, after receiving the RRC configuration message sent by the network side, the UE can send data through the DRB configured in the RRC configuration message.

[0152] In this example 1, when the UE needs to transmit data, the network side is triggered by the UE to configure some parameters of the bearer used to send data to the UE to the default value, thereby reducing the network signaling configuration overhead and enabling the device to transmit data with less signaling overhead.

[0153] Example 2

[0154] Parameter configuration process when the UE receives a paging message.

[0155] Figure 5 is a schematic diagram of the parameter configuration process when a UE receives a paging according to an embodiment of this application. As shown in Figure 5, the specific process may include the following steps:

[0156] Step 501: The network-side xNB sends SIB information;

[0157] For example, the DU on the network side can generate SIB information and broadcast it to the UE. The configuration of the uplink and downlink common configuration parameters DownlinkConfigCommonSIB / UplinkConfigCommonSIB in SIB1 can be used as the physical layer resource parameter configuration for small data transmission.

[0158] For example, in order to facilitate the configuration of the PDCCH detection period for subsequent data transmission, a dedicated search space for CFT PDCCH can be configured for CFT users.

[0159] For example, for a UE that supports CFT, the UE can power on to perform cell search and downlink synchronization, receive the SIB1 of the cell, camp in the cell that supports CFT, obtain and save the parameters used for small data transmission.

[0160] Step 502: The network side initiates a paging process;

[0161] For example, when downlink data arrives, the network side can send a paging message to page the UE.

[0162] Step 503, the UE initiates a random access request (RA);

[0163] For example, the UE can use the RA resource specific to small data transmission configured in the SIB to send a random access request.

[0164] Step 504, network-side random access RA response;

[0165] For example, the network side identifies the user as a connectionless transport CFT user through the RA resource of the random access request. The network side sends a random access response to the UE, allocates a larger TBSize through the UL Grant uplink authorization in the random access RA response, the authorization size can accommodate the request, and allocates a temporary cell radio network temporary identifier temp C-RNTI to the UE in Msg2.

[0166] Step 505, the UE initiates a CFT request;

[0167] For example, a CFT request may at least carry a UE ID+legacy request message.

[0168] For example, a CFT request can establish a CFT-specific SRBx connection.

[0169] For example, the SDAP / PDCP / RLC / MAC parameters of the SRBx connection can use the default configuration, and the specific parameter configuration values ​​can be predefined in the RRC protocol. This SRBx connection can be used to carry out subsequent processes such as secure establishment between the RAN and UE.

[0170] Step 506: The network side sends the contention resolution result;

[0171] For example, when multiple UEs attempt to access the network simultaneously, they may use the same random access resources, which can lead to contention. In order to determine which UE can continue the access process, the network side can identify and select the UE through a contention resolution process.

[0172] For example, the network side can use MAC CE to send the contention resolution result. This contention resolution result can be sent using the legacy UE Contention Resolution Identity MAC CE, scrambled with temp C-RNTI. After a successful contention, the temp C-RNTI can be updated to C-RNTI, and subsequent air interfaces can use C-RNTI scrambling. At this point, the SRBx bearer between the network side and the UE is also established.

[0173] Step 507: The network side sends an RRC configuration message;

[0174] For example, the network side can configure the CU-related parameters SDAP / PDCP carried in the RRC configuration message for small data transmission, the DU-related RLC / MAC parameters can use the default configuration, and the physical layer PHY-related parameters can use the common parameters in the SIB. Therefore, the RRC configuration message can only carry the radio bearer configuration RadioBearerConfig, and only configure the DRB parameters (i.e., SDAP and PDCP) for small data transmission.

[0175] Step 508: RRC configuration on the UE side is complete.

[0176] For example, after receiving the RRC configuration message sent by the network side, the UE can send data through the DRB configured in the RRC configuration message.

[0177] In Example 2, when the UE needs to transmit data, the network side initiates a paging process to trigger the configuration procedure. The network side configures some parameters of the bearer used to send data to the UE to default values, thereby reducing the network signaling configuration overhead and enabling the device to transmit data with less signaling overhead.

[0178] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this application.

[0179] This embodiment also provides a base station for implementing the steps in any of the above method embodiments.

[0180] This embodiment also provides a terminal for implementing the steps in any of the above method embodiments.

[0181] This embodiment also provides a communication system for implementing the steps in any of the above method embodiments.

[0182] Embodiments of this application also provide a computer-readable storage medium storing a computer program, wherein the computer program is configured to execute the steps in any of the above method embodiments when run.

[0183] In one exemplary embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard disk, magnetic disk, or optical disk.

[0184] Figure 6 is a structural block diagram of an electronic device according to an embodiment of the present application. As shown in Figure 6, an embodiment of the present application also provides an electronic device 60, including a memory 601 and a processor 602. The memory 601 stores a computer program, and the processor 602 is configured to run the computer program to perform the steps in any of the above method embodiments.

[0185] In one exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0186] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0187] Embodiments of this application also provide a computer program product, including a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0188] Obviously, those skilled in the art should understand that the modules or steps of this application described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented here, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, this application is not limited to any particular combination of hardware and software.

[0189] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A configuration method for connectionless transmission, comprising: Receive connectionless transmission requests sent by the UE (User Equipment) terminal; In response to a connectionless transmission request, a contention resolution result for the UE is generated, the contention resolution result is sent to the UE, and a signaling radio bearer connection is established with the corresponding UE based on the resolution result; wherein, at least some parameters of the signaling radio bearer connection are configured as common parameter configurations or preset value configurations.

2. The method of claim 1, wherein, Before receiving the connectionless transmission request sent by the UE, the following is also included: A system information block is generated and broadcast to the UE; wherein the system information block includes physical layer resource parameters configured with common parameters.

3. The method of claim 2, wherein, The configuration of the physical layer resource parameters corresponding to the signaling radio bearer connection is the common parameter configuration of the physical layer resource parameters corresponding to the system information block information.

4. The method of claim 2, wherein, After broadcasting the system information block information to the UE, the method further includes: Receive the random access request sent by the UE using random access resources; wherein, the random access resources are specific resources used for data transmission in the system information block information; Based on the random access resources, it is determined that the UE is in connectionless transmission mode, and a random access response is sent to the UE in connectionless transmission mode.

5. The method of claim 2, wherein, After broadcasting the system information block information to the UE, the method further includes: Send a paging request to the UE; Receive a random access request sent by the UE using random access resources according to the paging request; wherein, the random access resources are specific resources used for data transmission in the system information block information; Based on the random access resources, it is determined that the UE is in connectionless transmission mode, and a random access response is sent to the UE in connectionless transmission mode.

6. The method of claim 4 or 5, wherein, The random access response carries an uplink grant and a temporary cell radio network temporary identifier allocated to the UE for connectionless transmission mode; wherein the uplink grant carries an indication of the UE's transport block size, the transport block size being greater than or equal to the size of the connectionless transmission request, and the connectionless transmission request and the contention resolution result are scrambled using the temporary cell radio network temporary identifier.

7. The method of claim 2, wherein, After establishing the signaling radio bearer connection, the following is also included: Configure the centralized unit-related parameters of the data radio bearer parameters and the geographical area where the data radio bearer resources are effective, establish the data radio bearer and send a radio resource control configuration message to the UE. The configuration of the distributed unit-related parameters of the data radio bearer parameters is either a common parameter configuration or a preset value configuration. The radio resource control configuration message carries the centralized unit-related parameters of the data radio bearer parameters and the geographical area where the data radio bearer resources are effective. Receive data transmitted by the UE according to the data radio bearer parameters in the radio resource control configuration message.

8. The method of claim 7, wherein, The configuration of the physical layer resource parameters corresponding to the data radio bearer parameters is the common parameter configuration of the physical layer resource parameters corresponding to the system information block information.

9. The method of claim 7, wherein, The distributed unit-related parameters of the data wireless bearer parameters include at least one of the following: wireless link control parameters and media access control parameters.

10. The method of claim 7, wherein, The centralized unit-related parameters of the data wireless bearer parameters include at least one of the following: packet data aggregation protocol parameters and service data adaptation protocol parameters.

11. The method of claim 1, wherein, The parameters of the signaling radio bearer include at least one of the following: packet data aggregation protocol parameters, service data adaptation protocol parameters, radio link control parameters, and media access control parameters.

12. The method of claim 2, wherein, The common parameter configuration in the system information block information includes at least one of the following physical layer resource parameters: physical downlink control channel, physical downlink shared channel, random access channel, physical uplink control channel, and physical uplink shared channel.

13. A configuration method for connectionless transmission, comprising: Send a connectionless transmission request to the base station; The system receives the contention resolution result sent by the base station and establishes a signaling radio bearer connection with the base station; wherein at least some parameters of the signaling radio bearer connection are configured as common parameter configurations or preset value configurations.

14. The method of claim 13, wherein, Before sending a connectionless transmission request to the base station, it also includes: The system information block information broadcast by the base station is received; wherein the system information block information includes physical layer resource parameters configured with common parameters.

15. The method of claim 14, wherein, The configuration of the physical layer resource parameters corresponding to the signaling radio bearer connection is the common parameter configuration of the physical layer resource parameters corresponding to the system information block information.

16. The method of claim 14, wherein, After receiving the system information block information broadcast by the base station, the following is also included: A random access request is sent to the base station using random access resources; wherein, the random access resources are specific resources used for data transmission in the system information block information; Receive the random access response sent by the base station.

17. The method of claim 14, wherein, After receiving the system information block information broadcast by the base station, the following is also included: Receive the paging request sent by the base station; According to the paging request, a random access request is sent using random access resources; wherein, the random access resources are specific resources used for data transmission in the system information block information; Receive the random access response sent by the base station.

18. The method of claim 16 or 17, wherein, The random access response carries an uplink grant and a temporary cell radio network temporary identifier allocated to the UE in connectionless transmission mode; wherein the uplink grant carries an indication of the UE's transport block size, the transport block size being greater than or equal to the size of the connectionless transmission request, and the connectionless transmission request and the contention resolution result are scrambled using the temporary cell radio network temporary identifier.

19. The method of claim 14, wherein, After establishing the signaling radio bearer connection, the following is also included: The system receives a radio resource control configuration message sent by the base station and establishes a data radio bearer with the base station; wherein, the radio resource control configuration message carries centralized unit-related parameters of the data radio bearer parameters, the geographical area where the data radio bearer resources are effective, and the configuration of distributed unit-related parameters of the data radio bearer parameters is either a common parameter configuration or a preset value configuration. Data is transmitted to the base station according to the data radio bearer parameters in the radio resource control configuration message.

20. The method of claim 19, wherein, The configuration of the physical layer resource parameters corresponding to the data radio bearer parameters is the common parameter configuration of the physical layer resource parameters corresponding to the system information block information.

21. The method of claim 19, wherein, The distributed unit-related parameters of the data radio bearer parameters include at least one of the following: Radio Link Control (RLC) parameters and Media Access Control (MAC) parameters.

22. The method of claim 19, wherein, The centralized unit-related parameters of the data wireless bearer parameters include at least one of the following: packet data aggregation protocol parameters and service data adaptation protocol parameters.

23. The method of claim 13, wherein, The parameters of the signaling radio bearer include at least one of the following: packet data aggregation protocol parameters, service data adaptation protocol parameters, radio link control parameters, and media access control parameters.

24. The method of claim 14, wherein, The common parameter configuration in the system information block information includes at least one of the following physical layer resource parameters: physical downlink control channel, physical downlink shared channel, random access channel, physical uplink control channel, and physical uplink shared channel.

25. A base station for implementing the steps of the method according to any one of claims 1 to 12.

26. A terminal for implementing the steps of the method according to any one of claims 13 to 24.

27. A communication system comprising a base station and a terminal, wherein the base station is configured to implement the steps of the method according to any one of claims 1 to 12, and the terminal is configured to implement the steps of the method according to any one of claims 13 to 24.

28. A computer readable storage medium having stored therein a computer program, wherein, When the computer program is executed by a processor, it implements the steps of the method described in any one of claims 1 to 12, or the steps of the method described in any one of claims 13 to 24.

29. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the method of any one of claims 1 to 12, or implements the steps of the method of any one of claims 13 to 24.

30. A computer program product comprising a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1 to 12, or implements the steps of the method according to any one of claims 13 to 24.

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