WO2022237619A1 - Rrc消息的传输方法及装置、终端及可读存储介质 - Google Patents

Rrc消息的传输方法及装置、终端及可读存储介质 Download PDF

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Publication number
WO2022237619A1
WO2022237619A1 PCT/CN2022/090971 CN2022090971W WO2022237619A1 WO 2022237619 A1 WO2022237619 A1 WO 2022237619A1 CN 2022090971 W CN2022090971 W CN 2022090971W WO 2022237619 A1 WO2022237619 A1 WO 2022237619A1
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Prior art keywords
transmission path
rrc message
srb
iab node
processor
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PCT/CN2022/090971
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English (en)
French (fr)
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文鸣
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维沃移动通信有限公司
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Publication of WO2022237619A1 publication Critical patent/WO2022237619A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link

Definitions

  • the present application belongs to the technical field of communication, and in particular relates to a method and device for transmitting an RRC message, a terminal and a readable storage medium.
  • the current protocol only supports setting the primary path (Primary Path) as the master cell group (Master Cell Group, MCG) by default, that is, for all As far as the radio resource control (Radio Resource Control, RRC) message that needs to be sent through the split SRB is sent through the MCG by default, the terminal cannot autonomously switch the path for transmitting the RRC message.
  • Primary Path Primary Path
  • MCG Master Cell Group
  • Embodiments of the present application provide a method and device for transmitting an RRC message, a terminal, and a readable storage medium, which can solve the problem in the prior art that the RRC message can only be transmitted through the MCG by default.
  • a method for transmitting an RRC message including: when the first wireless access and backhaul integrated IAB node determines that a preset condition is satisfied, the first IAB node will transmit the RRC message The transmission path is switched from the first transmission path to the second transmission path; wherein, the first transmission path is a default transmission path; the first IAB node transmits the RRC messages.
  • a method for transmitting a radio resource control RRC message including: the second IAB node receives the RRC message transmitted by the first IAB node; when the second IAB node determines that a preset condition is met, the The second IAB node switches the transmission path for transmitting the RRC message from the third transmission path to the fourth transmission path; wherein, the third transmission path is a default transmission path; the second IAB node passes the first transmission path Four transmission paths transmit the RRC message.
  • an apparatus for transmitting an RRC message is provided, which is applied to a first IAB node, including: a first switching module configured to switch the transmission path for transmitting the RRC message from The first transmission path is switched to the second transmission path; wherein, the first transmission path is a default transmission path; the first transmission module is configured to transmit the RRC message to the second IAB node through the second transmission path.
  • a device for transmitting a radio resource control RRC message which is applied to a second IAB node, and includes: a receiving module, configured to receive the RRC message transmitted by the first IAB node; a second switching module, configured to determine When the preset condition is met, the node switches the transmission path for transmitting the RRC message from the third transmission path to the fourth transmission path; wherein, the third transmission path is a default transmission path; the second transmission module uses to transmit the RRC message through the fourth transmission path.
  • a terminal includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor.
  • the program or instruction is executed by the processor Implementing the steps of the method described in the first aspect, or implementing the steps of the method described in the second aspect.
  • a terminal including a processor and a communication interface, wherein the processor is configured to switch the transmission path for transmitting the RRC message from the first transmission path to A second transmission path, where the communication interface is used to transmit the RRC message to a second IAB node through the second transmission path.
  • a readable storage medium where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method according to the first aspect are implemented.
  • a chip in an eighth aspect, includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as described in the first aspect steps, or implement the method steps as described in the second aspect.
  • a ninth aspect provides a computer program/program product, the computer program/program product is stored in a non-volatile storage medium, and the program/program product is executed by at least one processor to implement the first aspect described method steps, or implement the method steps as described in the second aspect.
  • the first IAB node switches the transmission path for transmitting the RRC message from the first transmission path to the second transmission path, and then transmits the message to the second IAB node through the second transmission path. Transmit RRC message, thereby can realize the switching from the default transmission path to other paths, if the first transmission path is MCG, the second transmission path is SCG, thus can realize the switching from MCG to SCG, solve the existing technology only The problem of being able to transmit RRC messages through MCG by default.
  • Fig. 1 is a block diagram of a wireless communication system applicable to the embodiment of the application;
  • Fig. 2 is one of the schematic diagrams of separate transmission in the CP/UP separation scene of the embodiment of the present application;
  • FIG. 3 is the second schematic diagram of separate transmission in a CP/UP separation scenario according to an embodiment of the present application
  • Fig. 4 is a schematic structural diagram of the IAB system of the embodiment of the present application.
  • FIG. 5 is a schematic diagram of the CU-DU structure of the IAB system of the embodiment of the present application.
  • FIG. 6 is one of the flow charts of the RRC message transmission method of the embodiment of the present application.
  • Fig. 7 is the second flow chart of the RRC message transmission method of the embodiment of the present application.
  • FIG. 8 is one of the structural schematic diagrams of the RRC message transmission device of the embodiment of the present application.
  • FIG. 9 is a second structural schematic diagram of an RRC message transmission device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • first, second and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein and that "first" and “second” distinguish objects. It is usually one category, and the number of objects is not limited. For example, there may be one or more first objects.
  • “and/or” in the description and claims means at least one of the connected objects, and the character “/” generally means that the related objects are an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution-Advanced
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned system and radio technology, and can also be used for other systems and radio technologies.
  • the following description describes the New Radio (New Radio, NR) system for example purposes, and uses NR terminology in most of the following descriptions, but these techniques can also be applied to applications other than NR system applications, such as the 6th Generation (6th Generation , 6G) communication system.
  • 6th Generation 6th Generation
  • Fig. 1 shows a block diagram of a wireless communication system to which the embodiment of the present application is applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12 .
  • the terminal 11 can also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital Assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device (VUE), Pedestrian Terminal (PUE) and other terminal-side devices, wearable devices include: smart watches, bracelets, earphones, glasses, etc.
  • the network side device 12 may be a base station or a core network, where a base station may be called a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service Basic Service Set (BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN access point, WiFi node, transmission Receiving point (Transmitting Receiving Point, TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application, only The base station in the NR system is taken as an example, but the specific type of the base station is not limited.
  • SRB2 is used to deliver wireless access and backhaul integration (Integrated Access and Backhaul, IAB) separation unit (Distributed Unit, DU) Data related to the F1 control plane (F1-C) between the IAB host centralized unit (IAB-donor-CU), that is, IAB node 2 (IAB-node2) and the secondary node (Secondary Node, SN), that is, IAB-donor-CU , the F1-C data between them are transmitted to the main node (Main Node, MN), that is, the base station (next generation NodeB, gNB) through the air interface (Uu), and then the gNB interacts with the SN through the Xn interface, and the F1-C Data is passed to SN.
  • IAB Integrated Access and Backhaul
  • DU Distributed Unit
  • split SRB2 is used to transfer in scenario 2; where CP/UP separation describes the F1 control plane (F1-C)/F1 user plane (F1-C) between IAB-node and IAB-donor-CU
  • F1-U F1 control plane
  • F1-C F1 control plane
  • F1-C F1 user plane
  • RLC Radio Link Control
  • an IAB node includes a DU functional part and a mobile terminal (Mobile Termination, MT) functional part.
  • an access point IAB node
  • can find an upstream access point parent IAB node
  • This wireless connection is called a backhaul link.
  • the IAB node After an IAB node establishes a complete backhaul link, the IAB node turns on its DU function, and the DU will provide cell services, that is, the DU can provide access services for user equipment (UE).
  • a self-backhaul loop contains a donor IAB node (or become an IAB donor), and the donor IAB node has a directly connected wired transmission network.
  • FIG. 5 is a schematic diagram of the Centralized Unit-Distributed Unit (CU-DU) structure of an IAB system. As shown in Figure 5, in a self-backhaul loop, the DUs of all IAB nodes are connected to a The CU node is used to configure the DU through the F1-AP protocol. The CU configures the MT through the RRC protocol. Donor IAB node does not have MT functional part.
  • CU-DU Centralized Unit-Distributed Unit
  • the introduction of the IAB system is to solve the situation that the wired transmission network is not properly deployed when the access points are densely deployed. That is, when there is no wired transmission network, the access point can rely on wireless backhaul.
  • the wireless link between IAB nodes is called the Backhaul link, and the BH RLC information is configured on the BH link for wireless backhaul.
  • a primary RLC entity When a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) entity is associated with two or more RLC entities, a primary RLC entity will be defined for default data transmission; when the data resource bearer (Data Radio Bearer, DRB) to be transmitted ) when the total amount of data is less than the uplink data separation threshold (ul-DataSplitThreshold), the primary path (primary Path) is selected for data transmission; if the total amount is greater than or equal to the threshold, any associated RLC entity can be selected for data transmission transmission.
  • DRB Data Radio Bearer
  • the current protocol only supports setting the primary Path to MCG by default. And the corresponding ul-DataSplitThreshold does not need to be configured for SRB, that is, for all RRC messages that need to be sent through split SRB, they are sent through MCG by default. Only when Packet Data Convergence Protocol (Packet Data Convergence) is configured In the case of protocol (PDCP) duplication, the RRC message is sent once through the MCG and the secondary cell group (Secondary Cell Group, SCG).
  • Packet Data Convergence Protocol Packet Data Convergence
  • PDCP protocol
  • SCG secondary Cell Group
  • the embodiment of the present application provides a method for transmitting an RRC message, and the steps of the method include:
  • Step 602 when the first IAB node determines that the preset condition is satisfied, the first IAB node switches the transmission path for transmitting the RRC message from the first transmission path to the second transmission path; wherein, the first transmission path is the default transmission path path;
  • Step 604 the first IAB node transmits the RRC message to the second IAB node through the second transmission path.
  • the first IAB node switches the transmission path for transmitting the RRC message from the first transmission path to the second transmission path, and then transmits the message to the second IAB through the second transmission path
  • the node transmits the RRC message, so that the switch from the default transmission path to other paths can be realized. If the first transmission path is MCG, and the second transmission path is SCG, the switch from MCG to SCG can be realized, which solves the problem in the prior art. The problem that RRC messages can only be transmitted through MCG by default.
  • the first IAB node in the embodiment of the present application may further refer to the IAB-MT.
  • the signaling radio bearer SRB is configured as Split SRB, where the SRB is used to transmit RRC messages;
  • SRB is not configured with PDCP repetition function
  • the default transmission path configured by the SRB corresponds to the main cell group MCG;
  • Radio link failure RLF occurs on the MCG link.
  • the terminal can also switch the transmission path, so that the switching of the transmission path can be realized, and the RRC message can only be sent through the default transmission path. transmission.
  • the Split SRB may include at least one of the following: Split SRB1, Split SRB2.
  • SRB refers to the SRB between the MN (Master Node) and the UE with the RLC bearer in the MCG and SCG.
  • SRB1 is used to transmit RRC messages (possibly including attached NAS messages) and NAS messages before SRB2 is established, and the DCCH logical channel is used for all transmission processes.
  • SRB2 is used to transmit NAS messages and RRC messages containing measurement information for minimizing drive tests, and contains IAB-DU-specific F1-C related information.
  • the DCCH logical channel is used for all transmission processes.
  • the RRC message in the embodiment of the present application includes information related to the F1 control plane F1-C.
  • the RRC message can be uplink information transfer (ULInformationTransfer), which carries information such as Information (DedicatedInfoF1c).
  • the information related to F1-C includes F1 application protocol F1AP information and F1-C related IP packet information; wherein, the F1AP information is encapsulated in at least one of the following: Stream Control Transmission Protocol (Stream Control Transmission Protocol, SCTP) packets, Internet Protocol IP packets.
  • the IP data packets related to F1-C are data packets with SCTP encapsulation, or the IP data packets related to F1-C are data packets without SCTP encapsulation.
  • the RRC message is taken as an example of the ULInformationTransfer message.
  • the content of the ULInformationTransfer message is set as follows:
  • SRB2 is configured as a separate SRB, and PDCP-Duplication is not configured, and the ULInformationTransfer message includes dedicatedInfoF1c, and the primaryPath of the PDCP entity of SRB2 points to MCG, set the primary Path to point to SCG.
  • a transmission method of an RRC message is provided, and the steps of the method include:
  • Step 702 the second IAB node receives the RRC message transmitted by the first IAB node
  • Step 704 when the second IAB node determines that the preset condition is satisfied, the second IAB node switches the transmission path for transmitting the RRC message from the third transmission path to the fourth transmission path; wherein, the third transmission path is the default transmission path path;
  • Step 706 the second IAB node transmits the RRC message through the fourth transmission path.
  • the second IAB node After the second IAB node receives the RRC message, and if the preset condition is satisfied, the second IAB node switches the transmission path for transmitting the RRC message from the third transmission path to the fourth transmission path , and then transmit the RRC message through the fourth transmission path, so that switching from the default transmission path to other paths can be realized, if the third transmission path is MCG, and the fourth transmission path is SCG, so that switching from MCG to SCG can be realized, The problem in the prior art that the RRC message can only be transmitted through the MCG by default is solved.
  • the preset conditions in this embodiment of the present application include at least one of the following:
  • the signaling radio bearer SRB is configured as Split SRB, where the SRB is used to transmit RRC messages;
  • SRB is not configured with PDCP repetition function
  • the default transmission path configured by the SRB corresponds to the main cell group MCG;
  • Radio link failure RLF occurs on the MCG link.
  • the terminal can also switch the transmission path, so that the switching of the transmission path can be realized, and the RRC message can only be sent through the default transmission path. transmission.
  • the second IAB node in the embodiment of the present application is preferably a CU node.
  • the RRC message transmission method provided in the embodiment of the present application may be executed by the RRC message transmission device, or a control module in the RRC message transmission device for executing the RRC message transmission method.
  • the method for transmitting the RRC message performed by the device for transmitting the RRC message is taken as an example to describe the device for transmitting the RRC message provided in the embodiment of the present application.
  • the embodiment of the present application provides an RRC message transmission device, the device is applied to the first IAB node, and the device includes:
  • the first switching module 82 is configured to switch the transmission path for transmitting the RRC message from the first transmission path to the second transmission path when it is determined that the preset condition is met; wherein, the first transmission path is a default transmission path;
  • the first transmission module 84 is configured to transmit the RRC message to the second IAB node through the second transmission path.
  • the transmission path for transmitting the RRC message is switched from the first transmission path to the second transmission path, and then the RRC message is transmitted through the second transmission path, so that the For switching from the default transmission path to other paths, if the first transmission path is MCG and the second transmission path is SCG, the switching from MCG to SCG can be realized, which solves the problem that in the prior art, RRC messages can only be transmitted by default through MCG The problem.
  • the preset conditions in the implementation of the present application may include at least one of the following:
  • the signaling radio bearer SRB is configured as Split SRB, where the SRB is used to transmit RRC messages;
  • the SRB is not configured with the packet data convergence protocol PDCP repetition function
  • the default transmission path configured by the SRB corresponds to the main cell group MCG;
  • Radio link failure RLF occurs on the MCG link.
  • the Split SRB in this embodiment of the present application includes at least one of the following: Split SRB1, Split SRB2.
  • the RRC message in this embodiment of the present application includes information related to the F1 control plane F1-C.
  • the information related to F1-C includes F1 application protocol F1AP information and IP data packet information related to F1-C.
  • the F1AP information is encapsulated in at least one of the following: a Stream Control Transmission Protocol SCTP data packet, and an Internet Protocol IP data packet.
  • the IP data packet related to F1-C is a data packet with SCTP encapsulation, or the IP data packet related to F1-C is a data packet without SCTP encapsulation.
  • a device for transmitting an RRC message is provided, which is applied to a second IAB node, and the device includes:
  • a receiving module 92 configured to receive an RRC message transmitted by the first IAB node
  • the second switching module 94 is configured to switch the transmission path for the node to transmit the RRC message from the third transmission path to the fourth transmission path when it is determined that the preset condition is met; wherein, the third transmission path is a default transmission path;
  • the second transmission module 96 is configured to transmit the RRC message through the fourth transmission path.
  • the transmission path for transmitting the RRC message can be switched from the third transmission path to the fourth transmission path, and then through the fourth The transmission path transmits RRC messages, so that switching from the default transmission path to other paths can be realized. If the third transmission path is MCG, and the fourth transmission path is SCG, switching from MCG to SCG can be realized, which solves the problem of prior art The problem that RRC messages can only be transmitted through MCG by default.
  • the preset conditions in this embodiment of the present application include at least one of the following:
  • the signaling radio bearer SRB is configured as a Split SRB, where the SRB is used to transmit RRC messages;
  • the SRB is not configured with the packet data convergence protocol PDCP repetition function
  • the default transmission path configured by the SRB corresponds to the main cell group MCG;
  • Radio link failure RLF occurs on the MCG link.
  • the apparatus for transmitting the RRC message in the embodiment of the present application may be an apparatus, an apparatus having an operating system or an electronic device, or may be a component, an integrated circuit, or a chip in a terminal.
  • the apparatus or electronic equipment may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include but not limited to the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (Personal Computer, PC), a television ( Television, TV), teller machines or self-service machines, etc., are not specifically limited in this embodiment of the present application.
  • the RRC message transmission device provided by the embodiment of the present application can realize the various processes realized by the method embodiments in FIG. 6 and FIG. 7 , and achieve the same technical effect. In order to avoid repetition, details are not repeated here.
  • this embodiment of the present application further provides a communication device 1000, including a processor 1001, a memory 1002, and programs or instructions stored in the memory 1002 and operable on the processor 1001,
  • a communication device 1000 including a processor 1001, a memory 1002, and programs or instructions stored in the memory 1002 and operable on the processor 1001
  • the communication device 1000 is a terminal
  • the program or instruction is executed by the processor 1001
  • each process of the above-mentioned RRC message transmission method embodiment can be realized, and the same technical effect can be achieved.
  • the communication device 1000 is a network-side device, when the program or instruction is executed by the processor 1001, each process of the above-mentioned RRC message transmission method embodiment can be achieved, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.
  • the embodiment of the present application also provides a terminal, including a processor and a communication interface, and the processor is configured to switch the transmission path for transmitting the RRC message from the first transmission path to the second transmission path when it is determined that the preset condition is satisfied ;
  • the first transmission path is a default transmission path;
  • the communication interface is used to transmit the RRC message to the second IAB node through the second transmission path.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 11 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.
  • the terminal 1100 includes but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, and a processor 1110, etc. at least some of the components.
  • the terminal 1100 may also include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 1110 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions.
  • a power supply such as a battery
  • the terminal structure shown in FIG. 11 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 1104 may include a graphics processor (Graphics Processing Unit, GPU) 11041 and a microphone 11042, and the graphics processor 11041 is used for the image capture device (such as the image data of the still picture or video obtained by the camera) for processing.
  • the display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1107 includes a touch panel 11071 and other input devices 11072 . Touch panel 11071, also called touch screen.
  • the touch panel 11071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 11072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, and joysticks, which will not be repeated here.
  • the radio frequency unit 1101 receives the downlink data from the network side device, and processes it to the processor 1110; in addition, sends the uplink data to the network side device.
  • the radio frequency unit 1101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the memory 1109 can be used to store software programs or instructions as well as various data.
  • the memory 1109 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instructions required by at least one function (such as a sound playback function, an image playback function, etc.) and the like.
  • the memory 1109 may include a high-speed random access memory, and may also include a nonvolatile memory, wherein the nonvolatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • PROM erasable programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory for example at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.
  • the processor 1110 may include one or more processing units; optionally, the processor 1110 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly handle wireless communications, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 1110 .
  • the processor 1110 is configured to switch the transmission path for transmitting the RRC message from the first transmission path to the second transmission path when it is determined that the preset condition is met; wherein, the first transmission path is a default transmission path;
  • a radio frequency unit 1101, configured to transmit the RRC message to a second IAB node through the second transmission path;
  • the transmission path for transmitting the RRC message is switched from the first transmission path to the second transmission path, and then the RRC message is transmitted to the second IAB node through the second transmission path message, so that the switch from the default transmission path to other paths can be realized.
  • the first transmission path is MCG and the second transmission path is SCG
  • the switch from MCG to SCG can be realized, which solves the problem that in the prior art, only default Problems with transporting RRC messages over MCG.
  • the embodiment of the present application also provides a readable storage medium, the readable storage medium stores a program or an instruction, and when the program or instruction is executed by the processor, each process of the above-mentioned RRC message transmission method embodiment is implemented, and can To achieve the same technical effect, in order to avoid repetition, no more details are given here.
  • the processor is the processor in the terminal described in the foregoing embodiments.
  • the readable storage medium includes computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
  • the embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, the processor is used to run programs or instructions, and realize the implementation of the above RRC message transmission method
  • the chip includes a processor and a communication interface
  • the communication interface is coupled to the processor
  • the processor is used to run programs or instructions, and realize the implementation of the above RRC message transmission method
  • the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.
  • the embodiment of the present application also provides a computer program product, the computer program product is stored in a non-volatile storage medium, and when the computer program product is executed by at least one processor, the above embodiment of the RRC message transmission method is implemented.
  • Each process can achieve the same technical effect, so in order to avoid repetition, it will not be repeated here.
  • the term “comprising”, “comprising” or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase “comprising a " does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.
  • the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
  • the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation.
  • the technical solution of the present application can be embodied in the form of computer software products, which are stored in a storage medium (such as ROM/RAM, magnetic disk, etc.) , CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.

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Abstract

本申请公开了一种RRC消息的传输方法及装置、终端及可读存储介质，属于通信技术领域，本申请实施例的RRC消息的传输方法包括：在第一无线接入和回传一体化IAB节点确定满足预设条件的情况下，所述第一IAB节点将传输所述RRC消息的传输路径由第一传输路径切换至第二传输路径；其中，所述第一传输路径为默认的传输路径；所述第一IAB节点通过所述第二传输路径向第二IAB节点传输所述RRC消息。

Description

RRC消息的传输方法及装置、终端及可读存储介质
相关申请的交叉引用
本申请主张在2021年05月10日在中国提交的中国专利申请No.202110507641.6的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种RRC消息的传输方法及装置、终端及可读存储介质。
背景技术
对于分离(split)信令无线承载(Signaling Radio Bearer，SRB)而言，目前协议只支持将主路径(Primary Path)默认设置为主小区组(Master Cell Group，MCG)，也就是说，对于所有需要通过split SRB发送的无线资源控制(Radio Resource Control，RRC)消息而言，都是默认通过MCG发送的，导致终端无法自主切换传输RRC消息的路径。
发明内容
本申请实施例提供一种RRC消息的传输方法及装置、终端及可读存储介质，能够解决现有技术中只能默认通过MCG传输RRC消息的问题。
第一方面，提供了一种RRC消息的传输方法，包括：在第一无线接入和回传一体化IAB节点确定满足预设条件的情况下，所述第一IAB节点将传输所述RRC消息的传输路径由第一传输路径切换至第二传输路径；其中，所述第一传输路径为默认的传输路径；所述第一IAB节点通过所述第二传输路径向第二IAB节点传输所述RRC消息。
第二方面，提供了一种无线资源控制RRC消息的传输方法，包括：第二IAB节点接收第一IAB节点传输的RRC消息；在所述第二IAB节点确定满足预设条件的情况下，所述第二IAB节点将传输所述RRC消息的传输路径由第三传输路径切换至第四传输路径；其中，所述第三传输路径为默认的传 输路径；所述第二IAB节点通过所述第四传输路径传输所述RRC消息。
第三方面，提供了一种RRC消息的传输装置，应用于第一IAB节点，包括：第一切换模块，用于在确定满足预设条件的情况下，将传输所述RRC消息的传输路径由第一传输路径切换至第二传输路径；其中，所述第一传输路径为默认的传输路径；第一传输模块，用于通过所述第二传输路径向第二IAB节点传输所述RRC消息。
第四方面，提供了一种无线资源控制RRC消息的传输装置，应用于第二IAB节点，包括：接收模块，用于接收第一IAB节点传输的RRC消息；第二切换模块，用于在确定满足预设条件的情况下，节点将传输所述RRC消息的传输路径由第三传输路径切换至第四传输路径；其中，所述第三传输路径为默认的传输路径；第二传输模块，用于通过所述第四传输路径传输所述RRC消息。
第五方面，提供了一种终端，该终端包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤，或实现如第二方面所述的方法的步骤。
第六方面，提供了一种终端，包括处理器及通信接口，其中，所述处理器用于在确定满足预设条件的情况下，将传输所述RRC消息的传输路径由第一传输路径切换至第二传输路径，所述通信接口用于通过所述第二传输路径向第二IAB节点传输所述RRC消息。
第七方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤。
第八方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法步骤，或实现如第二方面所述的方法步骤。
第九方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在非易失的存储介质中，所述程序/程序产品被至少一个处理器执行以实现如第一方面所述的方法步骤，或实现如第二方面所述的方法步骤。
在本申请实施例中，在满足预设条件的情况下，第一IAB节点将传输RRC 消息的传输路径由第一传输路径切换至第二传输路径，进而通过第二传输路径向第二IAB节点传输RRC消息，从而可以实现由默认的传输路径到其他路径的切换，如果第一传输路径为MCG，第二传输路径为SCG，从而可以实现由MCG到SCG的切换，解决了现有技术中只能默认通过MCG传输RRC消息的问题。
附图说明
图1是申请实施例可应用的一种无线通信系统的框图；
图2是本申请实施例的在CP/UP separation场景进行分离传输的示意图之一；
图3是本申请实施例的在CP/UP separation场景进行分离传输的示意图之二；
图4是本申请实施例的IAB系统的结构示意图；
图5是本申请实施例的IAB系统的CU-DU结构示意图；
图6是本申请实施例的RRC消息的传输方法流程图之一；
图7是本申请实施例的RRC消息的传输方法流程图之二；
图8是本申请实施例的RRC消息的传输装置的结构示意图之一；
图9是本申请实施例的RRC消息的传输装置的结构示意图之二；
图10是本申请实施例的通信设备的结构示意图；
图11是本申请实施例的终端的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描 述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11也可以称作终端设备或者用户终端(User Equipment，UE)，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、可穿戴式设备(Wearable Device)或车载设备(VUE)、行人终端(PUE)等终端侧设备，可穿戴式设备包括：智能手表、手环、耳机、眼镜等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以是基站或核心网，其中，基站可被称为节点B、演进节点B、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、B节点、演进型B节点(eNB)、家用B节点、家用演进型B节 点、WLAN接入点、WiFi节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例，但是并不限定基站的具体类型。
此外，对本申请实施例中的相关术语进行解释说明
一、SRB的传递
如图2所示，在控制面和用户面分离(CP/UP separation)的场景1下SRB2来传递无线接入和回传一体化(Integrated Access and Backhaul，IAB)分离单元(Distributed Unit，DU)和IAB宿主集中单元(IAB-donor-CU)间F1控制面(F1-C)相关的数据，即IAB节点2(IAB-node2)与辅节点(Secondary Node，SN)，即IAB-donor-CU，之间的F1-C数据经由空口(Uu)进行传输至主节点(Main Node，MN)，即基站(next generation NodeB，gNB)，再由gNB通过Xn接口与SN进行交互，将F1-C数据传递至SN。
如图3所示，在场景2下使用split SRB2来传递；其中，CP/UP separation描述的是IAB-node与IAB-donor-CU之间的F1控制面(F1-C)/F1用户面(F1-U)经由不同的节点进行分离传输的场景，即IAB-node2与移动节点(Mobile Node，MN)之间的F1-C数据经由空口(Uu)进行传输，再由SN(gNB)通过Xn接口与MN节点进行交互，将F1控制面流量(F1-C traffic)传递给MN；而IAB-node2与MN节点之间的F1用户面流量(F1-U traffic)经由IAB拓扑网络中的回传(Back Haul，BH)无线链路层控制协议(Radio Link Control，RLC)信道进行传输。
二、IAB系统
如图4所示，一个IAB节点包括DU功能部分和移动终端(Mobile Termination，MT)功能部分。依靠MT，一个接入点(即IAB node)可以找到一个上游接入点(parent IAB node)，并跟上游接入点的DU建立无线连接，该无线连接被称为backhaul link。在一个IAB节点建立完整的回传链路后，该IAB节点打开其DU功能，DU会提供小区服务，即DU可以为用户终端(User Equipment，UE)提供接入服务。一个自回传回路包含一个donor IAB节点(或者成为IAB donor)，donor IAB节点有直接相连的有线传输网。
图5是一个IAB系统的集中单元-分离单元(Centralized Unit-Distributed Unit，CU-DU)结构示意图，如图5所示，在一个自回传回路中，所有的IAB节点的DU都连接到一个CU节点，由这一个节点通过F1-AP协议进行对DU进行配置。CU通过RRC协议，对MT进行配置。Donor IAB节点没有MT功能部分。
IAB系统的引入是为了解决接入点密集部署时，有线传输网部署不到位的情况。即在没有有线传输网络时，接入点可以依赖无线回传。
IAB节点之间的无线链路称为回传路径(Backhaul link)，BH link上配置有BH RLC信息进行无线回传。
三、Split SRB
当分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)实体关联2个或多个RLC实体时，会定义一个primary RLC实体来进行数据的默认传输；当需要传输的数据资源承载(Data Radio Bearer，DRB)数据总量小于上行数据分离阈值(ul-DataSplitThreshold)时，则选择主通路(primary Path)进行数据的传输，若总量大于或者等于该门限，则可以选择任意一个关联的RLC实体进行数据的传输。
而对于split SRB而言，目前协议只支持将primary Path默认设置为MCG。且对应的ul-DataSplitThreshold对于SRB而言是不需要配置的，即对于所有需要通过split SRB发送的RRC消息而言，都是默认通过MCG发送的，只有在配置了分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)重复(duplication)的情况下，才会将该RRC消息通过MCG和辅小区组(Secondary Cell Group，SCG)分别发送一次。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的RRC消息的传输方法进行详细地说明。
如图6所示，本申请实施例提供了一种RRC消息的传输方法，该方法的步骤包括：
步骤602，在第一IAB节点确定满足预设条件的情况下，第一IAB节点将传输RRC消息的传输路径由第一传输路径切换至第二传输路径；其中，第一传输路径为默认的传输路径；
步骤604，第一IAB节点通过第二传输路径向第二IAB节点传输RRC消息。
通过上述步骤602和步骤604，在满足预设条件的情况下，第一IAB节点将传输RRC消息的传输路径由第一传输路径切换至第二传输路径，进而通过第二传输路径向第二IAB节点传输RRC消息，从而可以实现由默认的传输路径到其他路径的切换，如果第一传输路径为MCG，第二传输路径为SCG，从而可以实现由MCG到SCG的切换，解决了现有技术中只能默认通过MCG传输RRC消息的问题。
在本申请实施例的可选实施方式中，本申请实施例中的第一IAB节点可以进一步是指IAB-MT。
需要说明的是，本申请实施例的预设条件可以包括以下至少一项：
1)信令无线承载SRB配置为分离Split SRB，其中，SRB用于传输RRC消息；
2)SRB未配置PDCP重复功能；
3)SRB配置的默认传输路径与主小区组MCG对应；
4)MCG链路出现无线链路失败RLF。
可见，在满足上述预设条件，如SRB未配置PDCP重复功能的情况下，终端也是可以进行传输路径的切换的，从而可以实现对传输路径的切换，避免只能够通过默认的传输路径进行RRC消息的传输。
在本申请实施例中，Split SRB可以包括以下至少一项：Split SRB1、Split SRB2。需要说明的是，SRB是指在MN(主节点)和在MCG和SCG中具有RLC承载的UE之间的SRB。其中，SRB1用于传输RRC消息(可能包括附带的NAS消息)以及在SRB2建立之前的NAS消息，传输过程全部使用DCCH逻辑信道。SRB2用于传输NAS消息，以及用于传输包含了用于最小化路测的测量信息的RRC消息，和包含了IAB-DU特定的F1-C相关的信息，传输过程全部使用DCCH逻辑信道。
在本申请实施例的中，本申请实施例中RRC消息包括与F1控制面F1-C相关的信息，例如，该RRC消息可以为上行链路信息传输(ULInformationTransfer)，其中携带如F1-C相关信息(DedicatedInfoF1c)。
进一步地，该与F1-C相关的信息包括F1应用协议F1AP信息和F1-C相关的IP数据包信息；其中，F1AP信息封装在以下至少一项中：流控制传输协议(Stream Control Transmission Protocol，SCTP)数据包、网际互连协议IP数据包。此外，F1-C相关的IP数据包为带有SCTP封装的数据包，或F1-C相关的IP数据包为未带有SCTP封装的数据包。
在本申请实施例中以RRC消息为ULInformationTransfer消息为例，在本申请实施例中对ULInformationTransfer消息的内容进行如下设置：
1)如果需要传输F1-C相关信息(仅适用于IAB-MT)，则在ULInformationTransfer内添加dedicatedInfoF1c信息；
2)如果将SRB2配置为分离SRB，并且未配置PDCP-Duplication，且ULInformationTransfer消息中包括dedicatedInfoF1c，并且SRB2的PDCP实体的primaryPath指向MCG，则将primary Path设置为指向SCG。
3)将ULInformationTransfer消息提交到下层进行传输。
需要说明的是，上述是从第一IAB节点侧对本申请实施例中的RRC消息的传输方法进行解释说明，下面将从第二IAB节点侧对本申请实施例中的RRC消息的传输方法进行解释说明。
如图7所示，提供了一种RRC消息的传输方法，该方法的步骤包括：
步骤702，第二IAB节点接收第一IAB节点传输的RRC消息；
步骤704，在第二IAB节点确定满足预设条件的情况下，第二IAB节点将传输RRC消息的传输路径由第三传输路径切换至第四传输路径；其中，第三传输路径为默认的传输路径；
步骤706，第二IAB节点通过第四传输路径传输RRC消息。
通过上述步骤702至步骤706，第二IAB节点接收到RRC消息后，且在满足预设条件的情况下，第二IAB节点将传输RRC消息的传输路径由第三传输路径切换至第四传输路径，进而通过第四传输路径传输RRC消息，从而可以实现由默认的传输路径到其他路径的切换，如果第三传输路径为MCG，第四传输路径为SCG，从而可以实现由MCG到SCG的切换，解决了现有技术中只能默认通过MCG传输RRC消息的问题。
可选地，本申请实施例中的预设条件包括以下至少一项：
1)信令无线承载SRB配置为分离Split SRB，其中，SRB用于传输RRC消息；
2)SRB未配置PDCP重复功能；
3)SRB配置的默认传输路径与主小区组MCG对应；
4)MCG链路出现无线链路失败RLF。
可见，在满足上述预设条件，如SRB未配置PDCP重复功能的情况下，终端也是可以进行传输路径的切换的，从而可以实现对传输路径的切换，避免只能够通过默认的传输路径进行RRC消息的传输。
需要说明的是，本申请实施例中的第二IAB节点优选为CU节点。
需要说明的是，本申请实施例提供的RRC消息的传输方法，执行主体可以为RRC消息的传输装置，或者，该RRC消息的传输装置中的用于执行RRC消息的传输方法的控制模块。本申请实施例中以RRC消息的传输装置执行RRC消息的传输方法为例，说明本申请实施例提供的RRC消息的传输装置。
如图8所示，本申请实施例提供了一种RRC消息的传输装置，该装置应用于第一IAB节点，该装置包括：
第一切换模块82，用于在确定满足预设条件的情况下，将传输RRC消息的传输路径由第一传输路径切换至第二传输路径；其中，第一传输路径为默认的传输路径；
第一传输模块84，用于通过第二传输路径向第二IAB节点传输RRC消息。
通过本申请实施例中的装置，在满足预设条件的情况下，将传输RRC消息的传输路径由第一传输路径切换至第二传输路径，进而通过第二传输路径传输RRC消息，从而可以实现由默认的传输路径到其他路径的切换，如果第一传输路径为MCG，第二传输路径为SCG，从而可以实现由MCG到SCG的切换，解决了现有技术中只能默认通过MCG传输RRC消息的问题。
可选地，本申请实施中的预设条件可以包括以下至少一项：
1)信令无线承载SRB配置为分离Split SRB，其中，SRB用于传输RRC消息；
2)SRB未配置分组数据汇聚协议PDCP重复功能；
3)SRB配置的默认传输路径与主小区组MCG对应；
4)MCG链路出现无线链路失败RLF。
可选地，本申请实施例中的Split SRB包括以下至少一项：Split SRB1、Split SRB2。
可选地，本申请实施例中的RRC消息内包括与F1控制面F1-C相关的信息。
可选地，与F1-C相关的信息包括F1应用协议F1AP信息和F1-C相关的IP数据包信息。其中，F1AP信息封装在以下至少一项中：流控制传输协议SCTP数据包、网际互连协议IP数据包。F1-C相关的IP数据包为带有SCTP封装的数据包，或F1-C相关的IP数据包为未带有SCTP封装的数据包。
需要说明的是，上述是从应用于第一IAB节点侧的装置对本申请实施例中的RRC消息的传输方法进行解释说明，下面将从应用于第二IAB节点侧的装置对本申请实施例中的RRC消息的传输方法进行解释说明。
如图9所示，提供了一种RRC消息的传输装置，应用于第二IAB节点，该装置包括：
接收模块92，用于接收第一IAB节点传输的RRC消息；
第二切换模块94，用于在确定满足预设条件的情况下，节点将传输RRC消息的传输路径由第三传输路径切换至第四传输路径；其中，第三传输路径为默认的传输路径；
第二传输模块96，用于通过第四传输路径传输RRC消息。
通过上述本申请实施例的装置，在接收到RRC消息后，且在满足预设条件的情况下，可以将传输RRC消息的传输路径由第三传输路径切换至第四传输路径，进而通过第四传输路径传输RRC消息，从而可以实现由默认的传输路径到其他路径的切换，如果第三传输路径为MCG，第四传输路径为SCG，从而可以实现由MCG到SCG的切换，解决了现有技术中只能默认通过MCG传输RRC消息的问题。
可选地，本申请实施例中的预设条件包括以下至少一项：
信令无线承载SRB配置为分离Split SRB，其中，SRB用于传输RRC消息；
SRB未配置分组数据汇聚协议PDCP重复功能；
SRB配置的默认传输路径与主小区组MCG对应；
MCG链路出现无线链路失败RLF。
本申请实施例中的RRC消息的传输装置可以是装置，具有操作系统的装置或电子设备，也可以是终端中的部件、集成电路、或芯片。该装置或电子设备可以是移动终端，也可以为非移动终端。示例性的，移动终端可以包括但不限于上述所列举的终端11的类型，非移动终端可以为服务器、网络附属存储器(Network Attached Storage，NAS)、个人计算机(Personal Computer，PC)、电视机(Television，TV)、柜员机或者自助机等，本申请实施例不作具体限定。
本申请实施例提供的RRC消息的传输装置能够实现图6和图7的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选的，如图10所示，本申请实施例还提供一种通信设备1000，包括处理器1001，存储器1002，存储在存储器1002上并可在所述处理器1001上运行的程序或指令，例如，该通信设备1000为终端时，该程序或指令被处理器1001执行时实现上述RRC消息的传输方法实施例的各个过程，且能达到相同的技术效果。该通信设备1000为网络侧设备时，该程序或指令被处理器1001执行时实现上述RRC消息的传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种终端，包括处理器和通信接口，处理器用于在确定满足预设条件的情况下，将传输所述RRC消息的传输路径由第一传输路径切换至第二传输路径；其中，所述第一传输路径为默认的传输路径；通信接口用于通过所述第二传输路径向第二IAB节点传输所述RRC消息。该终端实施例是与上述终端侧方法实施例对应的，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。具体地，图11为实现本申请实施例的一种终端的硬件结构示意图。
该终端1100包括但不限于：射频单元1101、网络模块1102、音频输出单元1103、输入单元1104、传感器1105、显示单元1106、用户输入单元1107、接口单元1108、存储器1109、以及处理器1110等中的至少部分部件。
本领域技术人员可以理解，终端1100还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器1110逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图11中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元1104可以包括图形处理器(Graphics Processing Unit，GPU)11041和麦克风11042，图形处理器11041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1106可包括显示面板11061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板11061。用户输入单元1107包括触控面板11071以及其他输入设备11072。触控面板11071，也称为触摸屏。触控面板11071可包括触摸检测装置和触摸控制器两个部分。其他输入设备11072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元1101将来自网络侧设备的下行数据接收后，给处理器1110处理；另外，将上行的数据发送给网络侧设备。通常，射频单元1101包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器1109可用于存储软件程序或指令以及各种数据。存储器1109可主要包括存储程序或指令区和存储数据区，其中，存储程序或指令区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器1109可以包括高速随机存取存储器，还可以包括非易失性存储器，其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。
处理器1110可包括一个或多个处理单元；可选的，处理器1110可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户 界面和应用程序或指令等，调制解调处理器主要处理无线通信，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器1110中。
其中，处理器1110，用于在确定满足预设条件的情况下，将传输所述RRC消息的传输路径由第一传输路径切换至第二传输路径；其中，所述第一传输路径为默认的传输路径；
射频单元1101，用于通过所述第二传输路径向第二IAB节点传输所述RRC消息；
通过本申请实施例中的终端，在满足预设条件的情况下，将传输RRC消息的传输路径由第一传输路径切换至第二传输路径，进而通过第二传输路径向第二IAB节点传输RRC消息，从而可以实现由默认的传输路径到其他路径的切换，如果第一传输路径为MCG，第二传输路径为SCG，从而可以实现由MCG到SCG的切换，解决了现有技术中只能默认通过MCG传输RRC消息的问题。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述RRC消息的传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述RRC消息的传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例还提供一种计算机程序产品，所述计算机程序产品被存储在非易失的存储介质中，所述计算机程序产品被至少一个处理器执行时实现上述RRC消息的传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (19)

  1. 一种无线资源控制RRC消息的传输方法，包括：
    在第一无线接入和回传一体化IAB节点确定满足预设条件的情况下，所述第一IAB节点将传输所述RRC消息的传输路径由第一传输路径切换至第二传输路径；其中，所述第一传输路径为默认的传输路径；
    所述第一IAB节点通过所述第二传输路径向第二IAB节点传输所述RRC消息。
  2. 根据权利要求1所述的方法，其中，所述预设条件包括以下至少一项：
    信令无线承载SRB配置为分离Split SRB，其中，所述SRB用于传输所述RRC消息；
    所述SRB未配置分组数据汇聚协议PDCP重复功能；
    所述SRB配置的默认传输路径与主小区组MCG对应；
    所述MCG链路出现无线链路失败RLF。
  3. 根据权利要求2所述的方法，其中，所述Split SRB包括以下至少一项：Split SRB1、Split SRB2。
  4. 根据权利要求1所述的方法，其中，所述RRC消息包括与F1控制面F1-C相关的信息。
  5. 根据权利要求4所述的方法，其中，
    所述与F1-C相关的信息包括F1应用协议F1AP信息和F1-C相关的IP数据包信息；
    所述F1AP信息封装在以下至少一项中：流控制传输协议SCTP数据包、网际互连协议IP数据包；
    所述F1-C相关的IP数据包为带有SCTP封装的数据包，或所述F1-C相关的IP数据包为未带有SCTP封装的数据包。
  6. 一种无线资源控制RRC消息的传输方法，包括：
    第二IAB节点接收第一IAB节点传输的RRC消息；
    在所述第二IAB节点确定满足预设条件的情况下，所述第二IAB节点将传输所述RRC消息的传输路径由第三传输路径切换至第四传输路径；其中， 所述第三传输路径为默认的传输路径；
    所述第二IAB节点通过所述第四传输路径传输所述RRC消息。
  7. 根据权利要求6所述的方法，其中，所述预设条件包括以下至少一项：
    信令无线承载SRB配置为分离Split SRB，其中，所述SRB用于传输所述RRC消息；
    所述SRB未配置分组数据汇聚协议PDCP重复功能；
    所述SRB配置的默认传输路径与主小区组MCG对应；
    所述MCG链路出现无线链路失败RLF。
  8. 一种RRC消息的传输装置，应用于第一IAB节点，包括：
    第一切换模块，用于在确定满足预设条件的情况下，将传输所述RRC消息的传输路径由第一传输路径切换至第二传输路径；其中，所述第一传输路径为默认的传输路径；
    第二传输模块，用于通过所述第二传输路径向第二IAB节点传输所述RRC消息。
  9. 根据权利要求8所述的装置，其中，所述预设条件包括以下至少一项：
    信令无线承载SRB配置为分离Split SRB，其中，所述SRB用于传输所述RRC消息；
    所述SRB未配置分组数据汇聚协议PDCP重复功能；
    所述SRB配置的默认传输路径与主小区组MCG对应；
    所述MCG链路出现无线链路失败RLF。
  10. 根据权利要求9所述的装置，其中，所述Split SRB包括以下至少一项：Split SRB1、Split SRB2。
  11. 根据权利要求8所述的装置，其中，所述RRC消息内包括与F1控制面F1-C相关的信息。
  12. 根据权利要求11所述的装置，其中，
    所述与F1-C相关的信息包括F1应用协议F1AP信息和F1-C相关的IP数据包信息；
    所述F1AP信息封装在以下至少一项中：流控制传输协议SCTP数据包、网际互连协议IP数据包；
    所述F1-C相关的IP数据包为带有SCTP封装的数据包，或所述F1-C相关的IP数据包为未带有SCTP封装的数据包。
  13. 一种无线资源控制RRC消息的传输装置，应用于第二IAB节点，包括：
    接收模块，用于接收第一IAB节点传输的RRC消息；
    第二切换模块，用于在确定满足预设条件的情况下，节点将传输所述RRC消息的传输路径由第三传输路径切换至第四传输路径；其中，所述第三传输路径为默认的传输路径；
    第二传输模块，用于通过所述第四传输路径传输所述RRC消息。
  14. 根据权利要求13所述的装置，其中，所述预设条件包括以下至少一项：
    信令无线承载SRB配置为分离Split SRB，其中，所述SRB用于传输所述RRC消息；
    所述SRB未配置分组数据汇聚协议PDCP重复功能；
    所述SRB配置的默认传输路径与主小区组MCG对应；
    所述MCG链路出现无线链路失败RLF。
  15. 一种无线资源控制RRC消息的传输系统，包括：权利要求8至12中任一项所述的装置，和权利要求13或14所述的装置。
  16. 一种终端，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至5中任一项所述的方法步骤，或实现如权利要求6或7所述的方法步骤。
  17. 一种可读存储介质，其中，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至5中任一项所述方法步骤，或实现如权利要求6或7所述的方法步骤。
  18. 一种芯片，包括处理器和通信接口，其中，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如权利要求1至5中任一项所述方法步骤，或实现如权利要求6或7所述的方法步骤。
  19. 一种计算机程序产品，其中，所述程序产品被存储在非易失的存储 介质中，所述程序产品被至少一个处理器执行以实现如权利要求1至5中任一项所述方法步骤，或实现如权利要求6或7所述的方法步骤。
PCT/CN2022/090971 2021-05-10 2022-05-05 Rrc消息的传输方法及装置、终端及可读存储介质 WO2022237619A1 (zh)

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