WO2022143090A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2022143090A1
WO2022143090A1 PCT/CN2021/136889 CN2021136889W WO2022143090A1 WO 2022143090 A1 WO2022143090 A1 WO 2022143090A1 CN 2021136889 W CN2021136889 W CN 2021136889W WO 2022143090 A1 WO2022143090 A1 WO 2022143090A1
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Prior art keywords
network device
access network
communication standard
communication
layer
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PCT/CN2021/136889
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English (en)
French (fr)
Inventor
王君
吕永霞
王婷
马江镭
张立清
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华为技术有限公司
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Publication of WO2022143090A1 publication Critical patent/WO2022143090A1/zh
Priority to US18/342,185 priority Critical patent/US20230345268A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/02—Inter-networking arrangements

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a communication method and apparatus.
  • the user plane protocol layer includes from top to bottom: packet data convergence protocol (packet data convergence protocol, PDCP) layer, radio link control (radio link control, RLC) layer, medium access control (medium access control, MAC) layer, physical (physical, PHY) layer.
  • packet data convergence protocol packet data convergence protocol
  • RLC radio link control
  • MAC medium access control
  • PHY physical (physical, PHY) layer.
  • SDAP service data adaptation protocol
  • the SDAP layer is located above the PDCP layer and is mainly used in the The function of mapping the quality of service flow (QoS flow) between the UE and the gNB to the data radio bearer (DRB) is performed on the air interface.
  • QoS flow quality of service flow
  • DRB data radio bearer
  • the access device configures the DRB-related information to the terminal in combination with the protocol layer, so that the terminal and the access device can transmit data.
  • next generation communication standard or future communication standard there are many possibilities for the specification of the protocol layers. How to be compatible with the protocol layers that may be specified in the subsequent communication standards and the protocol layers specified in the existing communication standards, and how to flexibly configure the DRB protocol layer information for the terminal is a technical problem that needs to be solved.
  • the embodiments of the present application provide a communication method and device, which are used to solve how to be compatible with the protocol layers that may be specified in subsequent communication standards and the protocol layers specified in the existing communication standards, so as to flexibly configure the protocol layer of the DRB for the terminal. question.
  • a first aspect provides a communication method.
  • a first access network device determines first configuration information; then, the first access network device sends the first configuration information to the terminal.
  • the first access network device is connected to the first core network device, and the first core network device uses the first communication standard or uses the second communication standard.
  • the first configuration information includes state indication information of a first protocol layer of the second communication standard; the first protocol layer includes a service data adaptation protocol SDAP layer; the state indication information indicates the first protocol layer
  • the first state or the second state indicates that the terminal executes the function of the first protocol layer, and the second state indicates that the terminal device does not execute the function of the first protocol layer.
  • the first access network device is compatible with the first protocol layer configured for the terminal.
  • the communication standards used are unified into the second communication standard.
  • two states are set for the first protocol layer (for example, the SDAP layer), which respectively indicate whether to execute the function of the first protocol layer.
  • the first access network device may determine whether the state of the first protocol layer is the first state or the second state in combination with whether the protocol layer is specified in the communication standard (for example, the communication standard used by the core network device). For example, if the SDAP layer is not specified in the communication standard, the state of the SDAP layer is configured as the second state. For example, if the SDAP layer is specified in the communication standard, the state of the SDAP layer is configured as the first state. Based on this way of configuring the state, it is possible to flexibly configure the information of the protocol layer of the DRB for the terminal.
  • the first access network device sends a first message to the second access network device, where the first message includes a communication standard used to indicate the first core network device Information.
  • the first access network device displays the communication standard used by the first core network to which the first access network device is connected to the second access network device, so that the second access network device knows that the first access network device is connected to
  • the communication standard used by the first core network can provide a reference for the core network equipment that selects a specific communication standard during the terminal handover process.
  • the first access network device sends the first message to the second access network device by using a first interface of a second communication standard.
  • the communication standards used by the interfaces connected between the access network devices are unified, and specifically the second communication standard is unified.
  • a message is sent between the first access network device and the second access network device using an interface of a unified second communication standard.
  • the first access network device supports the second interface and the third interface.
  • the first access network device is connected to the first core network device using the first communication standard through a second interface, and the second interface is defined in the first communication standard; or, the first communication standard
  • An access network device is connected to the first core network device using the second communication standard through a third interface, and the third interface is defined in the second communication standard.
  • the access network device only supports an interface defined in a communication standard for connecting the access network device to the core network device, for example, only the second interface or the third interface.
  • the access network device needs to upgrade the second interface to the third interface.
  • the access network device needs to upgrade the third interface to the second interface.
  • the upgrade process is rather cumbersome.
  • the first access network device supports interfaces for connecting the access network device and the core network device defined in multiple communication standards. After the communication standard used by the first core network device is updated, the first access network device The access network device can flexibly select the interface defined in the corresponding communication standard to connect with the first core network device without interface upgrade.
  • the first access network device receives a second message, where the second message includes information used to indicate a communication standard used by the first core network device.
  • the first access network device receives the second message from the first core network device; or the first access network device receives the second message from the operation and maintenance (operation and maintenance) , OM) the second message of the device.
  • the communication standard used by the core network device is configured by the core network device or the operation and maintenance device for the first access network device.
  • a communication method receives first configuration information from a first access network device. Then, the terminal may communicate with the first access network device according to the first configuration information.
  • the first access network device is connected to the first core network device, and the first core network device uses the first communication standard or uses the second communication standard.
  • the first configuration information includes: state indication information of a first protocol layer of the second communication standard; the first protocol layer includes a service data adaptation protocol SDAP layer; the state indication information indicates the first protocol The first state or the second state of the layer, the first state instructs the terminal to perform the function of the first protocol layer, and the second state instructs the terminal not to perform the function of the first protocol layer.
  • a communication method wherein a second access network device receives a first message from a first access network device, where the first message includes a communication standard used to indicate the first core network device information, the first core network device is connected to the first access network device.
  • the first access network device displays to the second access network device a communication standard used by the first core network indicating that the first access network device is connected, so that the second access network device knows the first
  • the communication standard used by the first core network to which the access network device is connected can provide a reference for the core network device that selects a specific communication standard during the terminal handover process.
  • a communication method wherein a first core network device sends a second message to a first access network device, where the second message includes a communication standard used to indicate the first core network device Information.
  • the first core network device notifies the first access network device that the communication standard used by the first core network device can provide a reference for the core network device that selects a specific communication standard during the terminal handover process.
  • the second message indicates the communication standard used by the first core network, which can reduce the difficulty of parsing by the first access network device.
  • a communication device in a fifth aspect, has the functions of implementing the first aspect and any possible implementation of the first aspect, or implementing the second aspect and any possible implementation of the second aspect. function, or realize the function in any possible implementation of the third aspect and the third aspect, or realize the function in any possible implementation of the fourth aspect and the fourth aspect.
  • These functions can be implemented by hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more functional modules corresponding to the above-mentioned functions.
  • a communication device including a processor; the processor is used to execute a computer program or instruction, and when the computer program or instruction is executed, it is used to implement the above-mentioned first aspect and the first aspect
  • the function of the first access network device in any possible implementation method, or the function of the terminal in any possible implementation method of the second aspect and the second aspect, or the third aspect and the third aspect.
  • the function of the second access network device in a possible implementation method, or the function of the core network device in any possible implementation method of the fourth aspect and the fourth aspect.
  • the computer program or instructions may be stored in the processor or in a memory coupled to the processor.
  • the memory may or may not be located in the communication device.
  • the apparatus further includes: a transceiver, configured to send a signal processed by the processor, or receive a signal input to the processor.
  • the transceiver may perform the sending action or the receiving action performed by the first access network device in the first aspect and any possible implementation of the first aspect, or perform the terminal execution in the second aspect and any possible implementation of the second aspect.
  • the present application provides a communication device, comprising a processor and an interface circuit, the interface circuit being configured to receive a signal from another communication device other than the communication device and transmit it to the processor, or transfer a signal to the processor.
  • the signal from the processor is sent to other communication devices than the communication device, and the processor is used in the method for implementing the first aspect and any possible implementation of the first aspect through a logic circuit or executing code instructions.
  • the communication device is a chip system, which may be composed of chips, or may include chips and other discrete devices.
  • a computer-readable storage medium for storing a computer program, the computer program comprising instructions for implementing the functions in the first aspect and any possible implementation of the first aspect, or for implementing Instructions for implementing the functions of the second aspect and any possible implementation of the second aspect, or for implementing the functions of the third aspect and any possible implementation of the third aspect, or for implementing the fourth aspect and the fourth aspect Instructions for functions in any possible implementation of the aspect.
  • a computer-readable storage medium for storing a computer program or instruction, when the computer program or instruction is executed by the communication device, the first connection in the above-mentioned first aspect and any possible implementation method of the first aspect is realized.
  • the function of the network device, or the function of the core network device in the fourth aspect and any possible implementation method of the fourth aspect is implemented.
  • a computer program product comprising: computer program code, when the computer program code is run on a computer, the computer is made to execute the first aspect and any possible possibility of the first aspect.
  • a communication system comprising: a first access network device executing the first aspect and any possible implementation method of the first aspect, and executing the second aspect and the second aspect A terminal in the method of any possible implementation of the aspect.
  • a first access network device executing the first aspect and any possible implementation method of the first aspect, and executing the second aspect and the second aspect A terminal in the method of any possible implementation of the aspect.
  • the first access network device in the method for performing any possible implementation of the first aspect and the first aspect and the second access network in the method for performing any possible implementation of the third aspect and the third aspect. equipment.
  • it includes the first access network device in the first aspect and the method for any possible implementation of the first aspect and the core network device in the method for performing any possible implementation of the fourth aspect and the fourth aspect.
  • FIG. 1 is a schematic diagram of the architecture of a dual-connection communication system provided in an embodiment of the present application
  • FIG. 2 is a schematic diagram of an existing MR-DC with EPC protocol stack provided in the embodiment of the present application;
  • FIG. 3 is a schematic diagram of the existing MR-DC with 5GC protocol stack provided in the embodiment of the present application.
  • FIG. 4 is a schematic diagram of a dual-connection protocol stack of a master node-secondary node provided in an embodiment of the present application
  • FIG. 5 is a schematic diagram of a terminal protocol stack provided in an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a communication process provided in an embodiment of the present application.
  • FIG. 7 is a functional schematic diagram of a dual connection provided in an embodiment of the present application.
  • 8a is a schematic diagram of a dual-connection protocol stack provided in an embodiment of the present application.
  • 8b is a schematic diagram of a dual-connection protocol stack provided in an embodiment of the application.
  • FIG. 8c is a schematic diagram of a dual-connection protocol stack provided in an embodiment of the present application.
  • FIG. 9 is a structural diagram of a communication device provided in an embodiment of the present application.
  • FIG. 10 is a structural diagram of a communication device provided in an embodiment of the application.
  • Communication system such as: wireless local area network communication system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), 5G or new wireless (new radio, NR) mobile communication system, sixth generation (6th generation, 6G) mobile communication system, and future mobile communication systems.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • 5G or new wireless (new radio, NR) mobile communication system sixth generation (6th generation, 6G) mobile communication system, and future mobile communication systems.
  • FIG. 1 is an architecture of a dual connectivity (DC) communication system to which the communication method provided by the embodiment of the present application is applicable.
  • a terminal can access two access network devices, which are a first access network device and a third access network device, respectively.
  • Two access network devices there is a connection between the first access network device and the second access network device.
  • the two access network devices may use different or the same communication standard.
  • the first access network device may be connected to the core network device.
  • the second access network device may be connected to the core network device.
  • Access network equipment and core network equipment can use 4G communication standards, 5G communication standards, or 6G communication standards.
  • the access network equipment can be a base station (base station), an evolved base station (evolved NodeB, eNodeB), a transmission reception point (TRP), a fifth generation (5th generation, 5G) mobile communication system.
  • the next generation base station (next generation NodeB, gNB), the next generation base station in the sixth generation (6th generation, 6G) mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc.; it can also be completed
  • a module or unit of some functions of the base station for example, may be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU).
  • the access network device may be a macro base station, a micro base station or an indoor station, or a relay node or a donor node. The embodiments of the present application do not limit the specific technology and specific device form adopted by the access network device.
  • the function of the access network device may also be performed by a module (such as a chip) in the access network device, or may be performed by a control subsystem including the function of the access network device.
  • the control subsystem including the function of the access network device here may be the control center in the application scenarios of the above-mentioned terminals such as smart grid, industrial control, intelligent transportation, and smart city.
  • a terminal may also be referred to as a terminal device, a user equipment (user equipment, UE), a mobile station, a mobile terminal, and the like.
  • Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things ( internet of things, IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc.
  • Terminals can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.
  • the functions of the terminal can also be performed by a module (such as a chip or a modem) in the terminal, and can also be performed by a device including the terminal functions.
  • a module such as a chip or a modem
  • Access network equipment and terminals may be fixed or movable. Access network equipment and terminals can be deployed on land, including indoor or outdoor, hand-held or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the access network device and the terminal.
  • Core network equipment such as access management network element, is a control plane network element provided by the operator network, responsible for the access control and mobility management of terminal equipment accessing the operator network, such as mobility state management, assigning user temporary Identity, authentication and user functions.
  • the access management network element may be a mobility management entity (mobility management entity, MME).
  • the access management network element may be an access and mobility management function (access and mobility management function, AMF) network element.
  • AMF access and mobility management function
  • the access management network element may still be an AMF network element, or may have other names, which are not limited in this application.
  • Core network equipment such as user plane network elements, is responsible for forwarding and receiving user data in terminal equipment.
  • User data can be received from the data network and transmitted to the terminal device through the access network device; the user plane network element can also receive user data from the terminal device through the access network device and forward it to the data network.
  • the transmission resources and scheduling functions that serve the terminal equipment in the user plane network element are managed and controlled by the session management function (SMF) network element.
  • SMF session management function
  • the user plane network element may be a serving gateway (serving gateway, SGW).
  • SGW serving gateway
  • the user plane network element may be a user plane function (UPF) network element.
  • the user plane network element may still be the UPF network element, or may have other names, which are not limited in this application.
  • a base station is used as an example of an access network device for description.
  • Option 1 Cross-radio access technology (RAT) carrier aggregation (CA), that is, the X-RAT CA method, which requires an ideal backhaul (backhaul) between the LTE base station and the NR base station. That is, the transmission delay of ms, or even us level, generally only optical fiber can meet this demand), and optical fiber deployment in most countries or regions is extremely scarce, so the actual deployment probability of X-RAT CA is low.
  • RAT radio access technology
  • CA cross-radio access technology
  • Option 2 X-RAT dual-connection DC method, this method does not require ideal backhaul between LTE base station and NR base station, so this method is finally adopted; and the related scheme of X-RAT DC is standardized in NR R15.
  • MR-DC multi-radio dual connectivity
  • the terminal is connected to two 5G NR base stations at the same time, the master node (master node, MN) and the slave node (slave node, SN) are both NR base stations (gNB ), the primary node and/or the secondary node are connected to 5G core network devices (eg, connected to AMF devices and/or UPF devices).
  • the node can be regarded as an access network device.
  • the terminal is connected to the LTE base station of 4G and the NR base station of 5G at the same time, and the master node is the eLTE base station (e-eNB) , the secondary node is an NR base station (gNB), and the primary node and/or the secondary node are connected to the 4G CN (for example, connected to an MME device and/or an SGW device).
  • EN-DC DC of E-UTRA and NR
  • gNB NR base station
  • the terminal can also be called NE-DC (NR, E-UTRA-DC) networking mode.
  • the terminal is connected to the LTE base station of 4G and the NR base station of 5G at the same time.
  • the main node is the NR base station (gNB), the secondary The node is an eLTE base station (e-eNB), and the master node and/or the secondary node is connected to a 5G core network device (eg, connected to an AMF device and/or a UPF device).
  • the terminal is connected to the 4G LTE base station and the 5G NR base station at the same time, the master node It is an eLTE base station (e-eNB), the secondary node is an NR base station (gNB), and the primary node and the secondary node are connected to 5G core network equipment (eg, connected to AMF equipment and/or UPF equipment).
  • e-eNB eLTE base station
  • gNB NR base station
  • 5G core network equipment eg, connected to AMF equipment and/or UPF equipment
  • opt2 means that the user plane device (or user plane network element) of the core network is only connected to the master node MN and not connected to the secondary node SN, and the master node MN performs UE data offload to the secondary node SN.
  • opt2a means that the user plane device of the core network (CN) is connected to the primary node MN and the secondary node SN at the same time. There is no data offloading path between the primary node MN and the secondary node SN, and the CN network element makes the data offloading decision.
  • opt2x means that the user plane equipment of the core network is only connected to the secondary node SN and not to the primary node MN. There is a data offload path between the secondary node SN and the primary node MN, and the secondary node SN offloads UE data to the primary node MN.
  • control plane device or control plane network element of the core network is only connected to the master node MN, and not to the secondary node SN.
  • opt3/3a/3x, opt4/4a/4x, opt7/7a/7x are similar to opt2/2a/2x and will not be repeated.
  • NR R15 provides two different protocol stacks and corresponding solutions :
  • the protocol stack shown in Figure 2 is called MR-DC with evolved packet core (EPC), which corresponds to the above EN-DC networking architecture (ie opt3/3a/3x), and the main node is connected to the 4G core network control surface device.
  • EPC evolved packet core
  • the protocol stack shown in Figure 3 is called MR-DC with fifth-generation core network (5GC), which corresponds to the sum of the above-mentioned three networking architectures of NE-DC, NGEN-DC and NR-DC, and the main node is connected to the 5G core network control plane device.
  • 5GC fifth-generation core network
  • the protocol layers included in the 4G communication standard and the 5G communication standard are introduced.
  • the user plane protocol layer includes from top to bottom: PDCP layer, RLC layer, MAC layer, PHY layer.
  • the control plane protocol layer includes from top to bottom: radio resource control (radio resource control, RRC) layer, PDCP layer, RLC layer, MAC layer, PHY layer.
  • RRC radio resource control
  • the user plane protocol layers include from top to bottom: SDAP layer, PDCP layer, RLC layer, MAC layer, and PHY layer.
  • the control plane protocol layer includes from top to bottom: RRC layer, PDCP layer, RLC layer, MAC layer, PHY layer.
  • RRC layer PDCP layer, RLC layer, MAC layer, PHY layer.
  • the SDAP layer is a new layer introduced by 5G compared to 4G. It exists only for the user plane.
  • the SDAP layer is mainly used to perform the function of QoS flow to DRB mapping between the UE and the gNB on the air interface.
  • the primary node and the secondary node are connected to 4G core network equipment, and the protocol stack of the primary node, secondary node, and UE does not include the SDAP layer.
  • the protocol stack MR-DC with 5GC shown in Figure 3 the primary node and the secondary node are connected to 5G core network equipment, and the protocol stack of the primary node, secondary node, and UE includes the SDAP layer.
  • Difference 2 PDCP layer, in the protocol stack MR-DC with EPC shown in Figure 2, for the MN terminated master cell group (master cell group, MCG) bearer (MN terminated MCG bearer) (that is, the MN is connected to the CN, and the terminal is in the The data on this bearer is transmitted through the MN, not through the SN), and supports both E-UTRA PDCP and NR PDCP modules (or entities); but in the protocol stack shown in Figure 3, MR-DC with In 5GC, for MN terminated MCG bearer, only NR PDCP module is supported.
  • MCG master cell group
  • MN terminated MCG bearer that is, the MN is connected to the CN, and the terminal is in the The data on this bearer is transmitted through the MN, not through the SN), and supports both E-UTRA PDCP and NR PDCP modules (or entities); but in the protocol stack shown in Figure 3, MR-DC with In 5GC, for MN terminated MCG bearer, only
  • Difference 3 The interface for communication between the primary node and the secondary node: X2 interface, Xn interface.
  • the X2 interface or protocol defined in the 4G (LTE) communication standard is used between the master node MN and the secondary node SN to carry/transmit the communication messages/information between nodes. make.
  • the Xn interface or protocol defined in the 5G (NR) communication standard is used between the master node MN and the slave node SN to carry/transmit communication messages between nodes/ signaling.
  • the slave cell group (SCG) bearer and split bearer in the two protocol stacks will not be described in detail.
  • This application proposes a new dual connectivity protocol stack, which is divided into three parts.
  • Third, the dual connectivity protocol stack is compatible with interfaces defined in various communication standards for connecting the master node with core network equipment (for example, defined as a CN-RAN interface).
  • the new dual-connection protocol stack is equivalent to the MR-DC protocol stack in Fig. 2 and Fig. 3, with some functions deleted to reduce the system complexity.
  • the following is divided into four embodiments for introduction. These four embodiments can be used alone as one embodiment, or two or three or four embodiments can be combined with each other to form a new embodiment.
  • Embodiment 1 Unify the communication standards used by the protocol layers included in the dual connectivity protocol stack.
  • the specified protocol layers may be the same, or may be specified in communication standards such as 5G
  • delete one or more protocol layers or add one or more new protocol layers.
  • the PDCP layer or the SDAP layer is deleted.
  • one or more new protocol layers are added on top of the SDAP layer.
  • one or more new protocol layers are added on top of the PDCP layer.
  • one or more new protocol layers are added below the PDCP layer.
  • This application defines the added new protocol layer as the xDAP layer, and the function implemented by the xDAP layer may be at least one of the following functions: part of the core network function, part of the SDAP layer function, and part of the RLC layer function. This application does not specifically limit the function of the xDAP layer.
  • the new dual connectivity protocol stack provided by this application includes: a part or all of the xDAP layer, the SDAP layer, the PDCP layer, the RLC layer, the MAC layer, and the PHY layer. In the scenario where the master node is connected to core network devices of different communication standards, the communication standards used by the protocol layers in the dual connection protocol stack are unified.
  • the xDAP layer in the protocol stack of the master node and the protocol stack of the slave node is the xDAP layer of the 6G communication standard, or the xDAP layer of the 7G communication standard, or the xDAP layer of the latest version of the communication standard.
  • the SDAP layer in the protocol stack of the master node and the protocol stack of the slave node is the SADP layer of the 5G communication standard, or the SDAP layer of the 6G communication standard, or the SDAP layer of the 7G communication standard, or the latest version of communication. Standard SDAP layer.
  • the PDCP layer in the protocol stack of the master node and the protocol stack of the slave node is the PDCP layer of the 4G communication standard, the SADP layer of the 5G communication standard, or the PDCP layer of the 6G communication standard, or the PDCP of the 7G communication standard. layer, or the PDCP layer of the latest version of the communication standard. 2 and 3, when the master node is connected to core network devices of different communication standards, for the MN terminated MCG bearer, the communication standards used by the PDCP layer are different. In the new dual-connection protocol stack provided by this application, for the MN terminated MCG bearer, the communication standard used by the PDCP layer is the same, for example, the PDCP layer of the latest version of the communication standard.
  • the RLC layer, MAC layer, and PHY layer are the RLC layer of the communication standard used by the master node, and the communication standard MAC layer used by the master node.
  • the communication standard PHY layer used by the master node the communication standard used by the master node.
  • the RLC layer, the MAC layer, and the PHY layer are the RLC layer of the communication standard used by the secondary node, the MAC layer of the communication standard used by the secondary node, and the PHY layer of the communication standard used by the secondary node. .
  • the communication standard used by the master node is a 5G communication standard, a 6G communication standard, or a 7G communication standard, or a communication standard that appears later.
  • the communication standard used by the secondary node is a 5G communication standard, a 6G communication standard, or a 7G communication standard, or a communication standard that appears later.
  • the above-mentioned 4G communication standard can also be replaced with evolved universal terrestrial radio access (E-UTRA), the 5G communication standard can also be replaced with NR, and the 6G can also be replaced with any name that can represent 6G. 7G can also be replaced by any name that can represent 7G.
  • E-UTRA evolved universal terrestrial radio access
  • 5G communication standard can also be replaced with NR
  • 6G can also be replaced with any name that can represent 6G
  • 7G can also be replaced by any name that can represent 7G.
  • the present application provides a schematic diagram of a dual-connectivity protocol stack (for the parts that are repeated with FIG. 2 and FIG. 3 , reference may be made to existing standards, and details will not be repeated).
  • the master node is connected to 5G core network equipment or connected to 6G core network equipment.
  • the xDAP layer, the SDAP layer, and the PDCP layer are the xDAP layer of the 6G communication standard, the SDAP layer of the 6G communication standard, and the PDCP layer of the 6G communication standard, respectively.
  • the RLC layer and the MAC layer are respectively the RLC layer (ie MN RLC) of the communication standard used by the master node, and the communication standard MAC layer (ie MN MAC) used by the master node.
  • the RLC layer and the MAC layer are respectively the RLC layer (ie SN RLC) of the communication standard used by the secondary node and the MAC layer (ie SN MAC) of the communication standard used by the secondary node.
  • the new dual-connection protocol stack provided by this application can also A state switch corresponding to the protocol layer may be included, and the state switch has two states, namely a first state and a second state.
  • the first state is used to indicate that the function of the protocol layer is not executed, or the function of the protocol layer is closed, or the protocol layer just transmits the data packet transparently, and the packet header of the protocol layer is not included in the data packet.
  • the second state is used to indicate that the function of the protocol layer is executed, or the function of the protocol layer is turned on, or the data packet includes the header of the protocol layer.
  • "State" is only the definition of a function, as long as the name can express its function, for example, replace "state” with "mode”, the first mode can also be called transparent mode, and the second mode can also be called non-transparent mode. transparent mode.
  • the first state may also be referred to as an on state, and the second state may also be referred to as an off state.
  • state switches are respectively set for one or more layers of the xDAP layer, the SADP layer, and the PDCP layer.
  • the protocol layer in the master node or the slave node is in the first state or the second state depends on the communication standard used by the core network device to which the master node is connected.
  • the communication standard used by the core network device connected to the master node is determined according to the dual-connection architecture where the master node is located.
  • the state of the state switch is introduced by taking the newly added xDAP layer in the 6G communication standard as an example.
  • MN is NR base station
  • SN 6G base station
  • CN 5G CN.
  • the xDAP layer does not exist in the protocol stacks of the MN and the SN; or the xDAP layer exists in the protocol stacks of the MN and the SN, but the state switch of the xDAP layer is the first state (or transparent mode), and all functions of the xDAP layer are turned off .
  • MN is NR base station
  • SN is 6G base station
  • CN is 6G CN. Because the 6G CN is connected, the xDAP layer needs to be introduced or turned on for both the MN and the SN.
  • the state switch of the xDAP layer is the second state (or non-transparent mode), and all functions of the xDAP layer are turned on.
  • MN is 6G base station
  • SN is NR base station
  • CN is 6G CN
  • the state switch of the xDAP layer is the second state (or non-transparent mode).
  • the state switch of the xDAP layer is the second state (or non-transparent mode).
  • terminal protocol stack is introduced in conjunction with the dual-connection protocol stack described above.
  • the protocol layers included in the terminal protocol stack are the same as those included in the dual connection protocol stack introduced above, and the communication standard adopted by each protocol layer in the terminal protocol stack is also the same as that in the dual connection protocol stack introduced above. The same communication standard is used for the protocol layer.
  • the xDAP layer, the SDAP layer, and the PDCP layer are the xDAP layer of the 6G communication standard, the SDAP layer of the 6G communication standard, and the PDCP layer of the 6G communication standard, respectively.
  • the RLC layer and the MAC layer are respectively the RLC layer of the communication standard used by the master node (ie MN RLC), the communication standard MAC layer used by the master node (ie MN MAC), and the RLC layer of the communication standard used by the slave node ( That is, SN RLC), the MAC layer of the communication standard used by the secondary node (that is, SN MAC).
  • the terminal protocol stack may also include a part or all of the xDAP layer, the SDAP layer, the PDCP layer, the RLC layer, the MAC layer, and the PHY layer.
  • the terminal protocol stack may also include a part or all of the xDAP layer, the SDAP layer, the PDCP layer, the RLC layer, the MAC layer, and the PHY layer.
  • no xDAP layer and/or SDAP layer is included.
  • the first access network device may be a master node.
  • the first access network device is connected to the first core network device, and the first core network device uses the first communication standard or the second communication standard.
  • Step 601 The first access network device determines first configuration information.
  • Step 602 The first access network device sends the first configuration information to the terminal.
  • the terminal receives the first configuration information from the first access network device.
  • Step 603 The terminal communicates with the first access network device according to the first configuration information.
  • the first configuration information includes status indication information of a first protocol layer of the second communication standard, and the first protocol layer includes a service data adaptation protocol SDAP layer.
  • the state indication information indicates a first state or a second state of the first protocol layer, the first state instructs the terminal to execute the function of the first protocol layer, and the second state instructs the terminal device not to execute the function of the first protocol layer. It is described above that "state” can be replaced with "mode”, which will not be repeated here.
  • the first access network device unifies the communication standard used by the first protocol layer configured for the terminal for the second communication standard.
  • the terminal no matter what scenario the terminal is in, for example, the EN-DC scenario, or the NE-DC, NGEN-DC, and NR-DC, etc., the terminal only needs to support the first unified second communication standard.
  • the protocol layer function is sufficient, and there is no need to support multiple sets of protocol stack functions.
  • the scenario of protocol stack upgrade will not be involved in the future.
  • the first access network device may determine whether the state of the first protocol layer is the first state or the second state in combination with whether the protocol layer is specified in the communication standard (eg, the communication standard used by the core network device). For example, if the SDAP layer is not specified in the communication standard, the state of the SDAP layer is configured as the second state. For example, if the SDAP layer is specified in the communication standard, the state of the SDAP layer is configured as the first state. Based on this way of configuring the state, it is possible to flexibly configure the DRB-related information of the protocol layer for the terminal.
  • the communication standard e.g, the communication standard used by the core network device
  • the second communication standard may be a 4G communication standard, a 5G communication standard, a 6G communication standard, or a 7G communication standard, or any communication standard that appears subsequently.
  • the second communication standard is the latest communication standard among the existing communication standards, or in other words, the second communication standard is a new version of the communication standard relative to the first communication standard.
  • the first configuration information further includes other related information of the first protocol layer of the second communication standard.
  • other related information of the first protocol layer of the second communication standard For example, information on protocol layers in the prior art.
  • the first protocol layer further includes, but is not limited to, at least one of a PDCP layer and an xDAP layer. That is, the first access network device may configure the terminal with relevant information of the PDCP layer of the second communication standard, relevant information of the xDAP layer of the second communication standard, and the like.
  • the first configuration information does not include information related to the first protocol layer of the first communication standard.
  • the first configuration information may also include, but is not limited to, the related information of the RLC layer of the third communication standard, the related information of the MAC layer of the third communication standard, and the related information of the PHY layer of the third communication standard. one or more.
  • the third communication standard is the communication standard used by the first access network device.
  • the communication standard used by the first access network device is a 5G communication standard, or a 6G communication standard, or a 7G communication standard, or any subsequent communication standard.
  • the content in the above-mentioned first configuration information may be generated by the master node, or may be generated by the secondary node and sent to the master node, and then configured by the master node to the terminal.
  • the first access network device configures the terminal with the relevant information about the DRB protocol layer, it can always be configured according to the first configuration information introduced above. .
  • the RRC protocol of the 3rd Generation Partnership Project (3GPP) such as technical specification (TS) 36.331 and TS 38.331, describes MR-DC related processes, for EN-DC, NGEN- Architectures such as DC, NR-DC, and NE-DC describe processes separately, and these processes behave roughly the same with only minor differences.
  • This application proposes a unified dual-connection protocol stack, so for MN RRC and SN RRC, the amount of description can also be reduced in subsequent communication standards.
  • Embodiment 2 Unify the communication standards used by the interface (for example, defined as the RAN-RAN interface) included in the dual-connectivity protocol stack for the connection of two nodes.
  • the interface for example, defined as the RAN-RAN interface
  • the master node and the auxiliary node are connected by the X2 interface defined in the 4G communication standard; when the master node is connected to the 5G core network equipment, the master node and the auxiliary node use 5G Xn interface connection as defined in the communication standard.
  • the networking architecture on the base station side should also be upgraded, for example, from the EN-DC architecture to the NGEN-DC architecture.
  • the master node in the EN-DC architecture, the master node is the e-eNB, and the master node is connected to the 4G core network equipment; in the NGEN-DC architecture, the master node is the e-eNB, and the master node is connected to the 5G core network equipment.
  • the master node e-eNB in the NGEN-DC architecture has been upgraded with respect to the master node e-eNB in the EN-DC architecture.
  • the master node eeNB needs to be upgraded or re-upgraded again to support the transition from the X2 interface to the Xn interface.
  • the new dual-connection protocol stack provided by this application unifies the interfaces (for example, defined as RAN-RAN interfaces) connecting two access network devices.
  • the interface connected between the two access network devices is hereinafter referred to as the first interface.
  • the communication standard used for the first interface between the master node and the slave node is the same.
  • the first interface between the master node and the auxiliary node is the interface defined in the second communication standard;
  • the master node is connected to the core network device of the second communication standard.
  • the first interface between the master node and the slave node is the interface defined in the second communication standard;
  • the first interface between the master node and the slave node is the interface defined in the second communication standard.
  • the second communication standard may be a 4G communication standard, a 5G communication standard, a 6G communication standard, or a 7G communication standard, or any communication standard that appears subsequently.
  • the second communication standard is the latest communication standard among the existing communication standards, or, compared to the first communication standard and the third communication standard, the second communication standard is a new version of the communication standard.
  • the master node and the slave node are connected using the first interface (eg, X6 interface) defined in the 6G communication standard.
  • the first interface eg, X6 interface
  • the target cell needs to be distinguished. For example, handover to 6G base stations connected to 6G core network equipment is only allowed, and handover to 6G base stations connected to 5G core network equipment is not allowed, so the terminal needs to know the communication standard used by the core network equipment.
  • the access device can inform the terminal of the communication standard used by the currently connected core network device, so that the terminal can select an appropriate communication system for handover.
  • the two nodes can interact with the communication standards used by the core network devices to which they are connected (it should be noted that when exchanging the communication standards used by the core network devices, the two nodes have not yet separated the primary and secondary nodes) .
  • the second node can determine, according to the format of the message, that the communication standard used by the core network to which the first node is connected is 4G communication
  • the standard is still the 5G communication standard.
  • the present application further proposes an example: the first node may display to the second node the communication standard used by the core network device.
  • the first access network device sends a first message to the second access network device, where the first message includes information used to indicate the communication standard used by the first core network device, the first core network device A network device is connected to the first access network device.
  • the second access network device receives the first message sent from the first access network device.
  • the first access network device is a master node
  • the second access network device is a secondary node.
  • the sending, by the first access network device, the first message to the second access network device specifically includes: the first access network device using a first interface of a second communication standard to send the first message to the second access network device.
  • the second access network device sends the first message.
  • the receiving, by the second access network device, the first message sent from the first access network device specifically includes: the second access network device receives, by using the first interface of the second communication standard, the receiving The first message is sent from the first access network device.
  • the first interface of the second communication standard not only transmits the first message, but also can transmit the message transmitted in the existing DC. For example, the message in the negotiation between the master node MN and the secondary node SN.
  • some functions or characteristics need to be shared between the MN and the SN.
  • some functions or characteristics such as the constant uplink power of the UE
  • the power ratio for the MN and SN needs to be determined (for example, 7:3, the power of the MN accounts for 70% of the total transmit power; the power of the SN accounts for the total transmit power 30%); similarly there are more parameters to be negotiated.
  • the MN and SN cannot configure the same frequency measurement for a UE at the same time or report the cell global identifier (CGI), the total number of measuring objects configured by the MN and SN for a UE at the same time is limited, etc. Wait.
  • the MN can obtain the configurations delivered by the SN to the UE, and it can be understood that these configurations are negotiated based on this mechanism; the SN is also similar.
  • the message transmitted in the existing DC can also be the existing X2 or Xn message, for example, in order to support the addition/modification/deletion of the SN, the change of the MN, and the switching from the DC architecture to the non-DC architecture, etc.
  • Messages need to be transmitted between stations through X2/Xn signaling; these messages can be MN-triggered or SN-triggered.
  • the messages transmitted in the existing DC such as the messages informing the respective supported capabilities of the master node and the slave node, such as the messages in the switching procedure from the DC architecture to the non-DC architecture.
  • the first access network device receives a second message, where the second message includes information used to indicate a communication standard used by the first core network device.
  • the first access network device knows the communication standard used by the first core network device to which it is connected, and can provide a reference for selecting the core network device of a specific communication standard during the terminal handover process.
  • the second message display indicates the communication standard used by the first core network, which can reduce the difficulty of parsing by the first access network device.
  • the first access network device receives the second message from the first core network device.
  • the first core network device sends the second message to the first access network device.
  • the first access network device receives the second message from the operation and maintenance OM device.
  • the operation and maintenance OM device sends the second message to the first access network device.
  • Embodiment 3 The dual connection protocol stack is compatible with the interfaces defined in various communication standards for connecting the master node with the core network device.
  • the access network equipment when the access network equipment is connected to the 4G core network equipment, the access network equipment and the 4G core network equipment are connected by the S1 interface defined in the 4G communication standard; when the access network equipment is connected to the 5G core network equipment, the access network equipment and the 5G core network equipment are connected
  • the core network equipment is connected using the Ng interface defined in the 5G communication standard.
  • An access network device only supports an interface defined in a communication standard for connecting an access network device to a core network device. As described in Embodiment 2, when the core network device is upgraded, it needs to support the transition from the X2 interface to the Xn interface. For the connection between the access network equipment and the core network equipment, it is also necessary to support the transition from the S1 interface to the Ng interface, which also has the problem of cumbersome upgrades.
  • the new dual-connection new protocol stack proposed in this application includes interfaces defined in multiple communication standards for connection between access network equipment and core network equipment, for example, including the S1 interface defined in 4G communication standards, 5G communication
  • the Ng interface defined in the standard the interface defined in the 6G communication standard for the connection between the access network device and the core network device (for example, called the N6 interface), and the interface defined in the 7G communication standard for the access network device and the core network device.
  • Two or more of the interfaces (for example, called N7 interfaces) connected between network devices.
  • a selective switch can also be set, no matter which communication standard the core network device adopts, the access network device only needs to select the interface corresponding to the communication standard to connect to the core network device, and no interface upgrade is required. For example, when connecting 5G core network equipment, use Ng interface connection, when connecting 6G core network equipment, use N6 interface connection.
  • the first access network device supports the second interface defined in the first communication standard and the third interface defined in the second communication standard.
  • the first core network uses the first communication standard
  • the first access network device is connected to the first core network device using the first communication standard through the second interface; or, the first core network uses the first communication standard.
  • the first access network device is connected to the first core network device using the second communication standard through the third interface.
  • the access network device only supports an interface defined in a communication standard for connecting the access network device to the core network device, for example, only the second interface or the third interface.
  • the access network device needs to upgrade the second interface to the third interface.
  • the access network device needs to upgrade the third interface to the second interface.
  • the upgrade process is rather cumbersome.
  • the first access network device supports interfaces for connecting the access network device and the core network device defined in multiple communication standards. After the communication standard used by the first core network device is updated, the first access network device The access network device can flexibly select the interface defined in the corresponding communication standard to connect with the first core network device without interface upgrade.
  • Embodiment 4 The new dual-connection protocol stack is equivalent to the MR-DC protocol stack in FIG. 2 and FIG. 3 , with some functions deleted to reduce the system complexity.
  • Alt-1 Only supports EN-DC like Solution, only supports SN terminated SCG bearer and/or split bearer, and does not support MN terminated MCG bearer, SCG bearer, and split bearer.
  • the master node MN only supports the Ng interface and does not support N6. Only the secondary node SN is connected to the user plane (UP) of the 6GC. EN-DC-like dual-connection protocol stack, data splitting only supports SN terminated bearer (example split bearer).
  • Alt-2 only supports EN-DC like and NR-DC like schemes (corresponding to N6-DC and 6G-DC in 6G DC), and only supports SN terminated SCG bearer and/or split bearer .
  • the master node MN supports both Ng and N6 interfaces, but switches selectively. Only the secondary node SN is connected to the user plane UP of the 6GC. MR-DC-like dual-connection protocol stack, data splitting only supports SN terminated split bearer.
  • Alt-3 only supports EN-DC like and NR-DC like schemes (corresponding to N6-DC and 6G-DC in 6G DC), and supports MN terminated MCG bearer, SCG bearer, split bearer, and SN-terminated bearer, for example, SCG bearer and/or split bearer.
  • the master node MN supports both Ng and N6 interfaces, but switches selectively. Both the MN and the SN are connected to the user plane UP of the 6GC. MR-DC like dual connection protocol stack, data offload supports both MN and SN terminated.
  • Protocol layers included in Figure 8a, Figure 8b, and Figure 8c are only an example, and some protocol layers may also be deleted based on these protocol layers, such as deleting the xDAP layer, SDAP layer, etc.
  • the simplified DC architecture designed in this embodiment reduces protocol complexity and system complexity by omitting the functions defined by MR-DC in NR, and can be flexibly used for multiple networks, multiple base station types, multiple carriers and spectrum types , is the future development direction.
  • it is suitable for many types of access point networks, such as terrestrial networks, non-terrestrial networks, UAV networks, MAV networks, satellite networks, etc.
  • the access network device, the terminal, and the core network device include corresponding hardware structures and/or software modules for performing each function.
  • the units and method steps of each example described in conjunction with the embodiments disclosed in the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software-driven hardware depends on the specific application scenarios and design constraints of the technical solution.
  • FIG. 9 and FIG. 10 are schematic structural diagrams of possible communication apparatuses provided by embodiments of the present application. These communication apparatuses can be used to implement the functions of the access network equipment, or the terminal, or the core network equipment in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments.
  • the communication apparatus 900 includes a processing module 910 and a transceiver module 920 .
  • the communication apparatus 900 is configured to implement the functions of the access network device, or the terminal, or the core network device in the foregoing method embodiments.
  • the transceiver module 920 is used to receive the first configuration information
  • the processing module 910 is used to communicate with the first access network according to the first configuration information devices to communicate.
  • the transceiver module 920 is configured to send the first configuration information
  • the processing module 910 is configured to determine the first configuration information, and communicate with the terminal according to the first configuration information.
  • the communication apparatus 1000 includes a processor 1010 and an interface circuit 1020 .
  • the processor 1010 and the interface circuit 1020 are coupled to each other.
  • the interface circuit 1020 can be a transceiver or an input-output interface.
  • the communication apparatus 1000 may further include a memory 1030 for storing instructions executed by the processor 1010 or input data required by the processor 1010 to run the instructions or data generated after the processor 1010 runs the instructions.
  • the processor 1010 is used to implement the function of the above-mentioned processing module 910
  • the interface circuit 1020 is used to implement the function of the above-mentioned transceiver module 920 .
  • the terminal device chip When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments.
  • the terminal device chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent by the network device to the terminal device; or, the terminal device chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal device antenna) to send information, the information is sent by the terminal equipment to the network equipment.
  • modules such as a radio frequency module or an antenna
  • the access network device chip When the above communication device is a chip applied to an access network device, the access network device chip implements the functions of the access network device in the above method embodiments.
  • the access network device chip receives information from other modules (such as radio frequency modules or antennas) in the access network device, and the information is sent by the terminal device to the access network device; or, the access network device chip sends information to the access network device.
  • Other modules in the device such as radio frequency modules or antennas
  • send information which is sent by the access network device to the terminal device.
  • the processor in the embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • a general-purpose processor may be a microprocessor or any conventional processor.
  • the method steps in the embodiments of the present application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions.
  • Software instructions may be composed of corresponding software modules, and software modules may be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory memory, registers, hard disk, removable hard disk, CD-ROM or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and storage medium may reside in an ASIC.
  • the ASIC may be located in a network device or in an end device.
  • the processor and the storage medium may also exist in the network device or the terminal device as discrete components.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer programs or instructions.
  • the processes or functions described in the embodiments of the present application are executed in whole or in part.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable apparatus.
  • the computer program or instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instructions may be downloaded from a website site, computer, A server or data center transmits by wire or wireless to another website site, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server, data center, or the like that integrates one or more available media.
  • the usable media may be magnetic media, such as floppy disks, hard disks, magnetic tapes; optical media, such as digital video discs; and semiconductor media, such as solid-state drives.
  • “at least one” means one or more, and “plurality” means two or more.
  • “And/or”, which describes the association relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related objects are a kind of "or” relationship; in the formula of this application, the character "/” indicates that the related objects are a kind of "division" Relationship.

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Abstract

本申请涉及无线通信技术领域，公开了一种通信方法及装置，用以解决如何兼容后续通信标准中可能规定的协议层和已规定的协议层，灵活为终端配置DRB的协议层的问题。第一接入网设备确定配置信息；并向终端发送配置信息。第一接入网设备与第一核心网设备相连接，第一核心网设备使用第一或第二通信标准。配置信息包括第二通信标准的第一协议层(例SDAP层)的状态指示信息，该状态指示信息指示终端执行或不执行第一协议层的功能。第一接入网设备结合核心网设备的通信标准中规定的协议层，决定该第一协议层的状态。例如，通信标准中未规定/规定第一协议层，配置第一协议层的状态为不执行/执行。从而实现灵活地为终端配置DRB的协议层的信息。

Description

一种通信方法及装置
相关申请的交叉引用
本申请要求在2020年12月31日提交中国专利局、申请号为202011633564.0、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信技术领域，尤其涉及一种通信方法及装置。
背景技术
在第四代(4th generation，4G)移动通信标准中，规定用户面协议层包括从上至下的：分组数据汇聚协议(packet data convergence protocol，PDCP)层、无线链路控制(radio link control，RLC)层、介质访问控制(medium access control，MAC)层、物理(physical，PHY)层。在第五代(5th generation，5G)移动通信标准中，相对于4G通信标准新引入了业务数据适配协议(service data adaptation protocol，SDAP)层，SDAP层位于PDCP层之上，主要用于在空口上执行UE和gNB之间的服务质量流(quality of service flow，QoS flow)到数据无线承载(data radio bearer，DRB)映射的功能。在通信过程中，接入设备结合协议层，向终端配置DRB的相关信息，以便终端与接入设备传输数据。
在下一代通信标准或未来通信标准中，对于协议层的规定有多种可能性。如何兼容后续通信标准中可能规定的协议层，以及现有通信标准中已规定的协议层，灵活地为终端配置DRB的协议层的信息，是需要解决的技术问题。
发明内容
本申请实施例提供了一种通信方法及装置，用以解决如何兼容后续通信标准中可能规定的协议层，以及现有通信标准中已规定的协议层，灵活地为终端配置DRB的协议层的问题。
第一方面，提供了一种通信方法，首先，第一接入网设备确定第一配置信息；然后，所述第一接入网设备向所述终端发送所述第一配置信息。所述第一接入网设备与第一核心网设备相连接，所述第一核心网设备使用第一通信标准或者使用第二通信标准。所述第一配置信息包括所述第二通信标准的第一协议层的状态指示信息；所述第一协议层包括业务数据适配协议SDAP层；所述状态指示信息指示所述第一协议层的第一状态或第二状态，所述第一状态指示终端执行所述第一协议层的功能，所述第二状态指示所述终端设备不执行所述第一协议层的功能。
在第一方面中，不管第一接入网设备接入的第一核心网设备是使用第一通信标准，还是使用第二通信标准，第一接入网设备对为终端配置的第一协议层所使用的通信标准统一为第二通信标准。并且，对于第一协议层(例如SDAP层)设置两种状态，分别指示是否执行该第一协议层的功能。第一接入网设备可以结合通信标准(例如核心网设备所使用的 通信标准)中是否规定该协议层，决定该第一协议层的状态是第一状态还是第二状态。例如，通信标准中未规定SDAP层，则配置该SDAP层的状态为第二状态。例如通信标准中规定了SDAP层，则配置该SDAP层的状态为第一状态。基于这种配置状态的方式，可以实现灵活地为终端配置DRB的协议层的信息。
在一种可能的实现中，所述第一接入网设备向第二接入网设备发送第一消息，所述第一消息中包括用于指示所述第一核心网设备所使用的通信标准的信息。第一接入网设备向第二接入网设备显示指示第一接入网设备所连接的第一核心网所使用的通信标准，以便第二接入网设备知道第一接入网设备所连接的第一核心网所使用的通信标准，可以为终端切换过程中选择特定通信标准的核心网设备提供参考。
在一种可能的实现中，所述第一接入网设备通过使用第二通信标准的第一接口，向所述第二接入网设备发送所述第一消息。对于接入网设备之间连接的接口所使用的通信标准进行统一，具体统一为所述第二通信标准。第一接入网设备与第二接入网设备之间采用统一的第二通信标准的接口发送消息。
在一种可能的实现中，所述第一接入网设备支持所述第二接口和所述第三接口。所述第一接入网设备通过第二接口与使用所述第一通信标准的所述第一核心网设备连接，所述第二接口在所述第一通信标准中定义；或者，所述第一接入网设备通过第三接口与使用所述第二通信标准的所述第一核心网设备连接，所述第三接口在所述第二通信标准中定义。
在现有技术中，接入网设备只支持一种通信标准中定义的接入网设备与核心网设备连接的接口，例如只支持第二接口或第三接口。当第一接入网设备由连接第一通信标准的核心网设备，转换为连接第二通信标准的核心网设备时，接入网设备需要将第二接口升级到第三接口。或者，当第一接入网设备由连接第二通信标准的核心网设备，转换为连接第一通信标准的核心网设备时，接入网设备需要将第三接口升级到第二接口。升级过程比较繁琐。而在该可能的实现中，第一接入网设备支持多种通信标准中定义的接入网设备与核心网设备连接的接口，当第一核心网设备所使用的通信标准更新后，第一接入网设备可以灵活地选择对应通信标准中定义的接口，与第一核心网设备连接，无需进行接口升级。
在一种可能的实现中，所述第一接入网设备接收第二消息，所述第二消息中包括用于指示所述第一核心网设备所使用的通信标准的信息。
在一种可能的实现中，所述第一接入网设备接收来自所述第一核心网设备的所述第二消息；或者，所述第一接入网设备接收来自操作维护(operation and maintenance，OM)设备的所述第二消息。
由核心网设备或操作维护设备为第一接入网设备配置核心网设备所使用的通信标准。
第二方面，提供了一种通信方法，首先，终端接收来自第一接入网设备的第一配置信息。然后，所述终端可以根据所述第一配置信息与所述第一接入网设备通信。所述第一接入网设备与第一核心网设备相连接，所述第一核心网设备使用第一通信标准或者使用第二通信标准。所述第一配置信息包括：所述第二通信标准的第一协议层的状态指示信息；所述第一协议层包括业务数据适配协议SDAP层；所述状态指示信息指示所述第一协议层的第一状态或第二状态，所述第一状态指示所述终端执行所述第一协议层的功能，所述第二状态指示所述终端不执行所述第一协议层的功能。
第三方面，提供了一种通信方法，第二接入网设备接收来自第一接入网设备的第一消 息，所述第一消息中包括用于指示第一核心网设备所使用的通信标准的信息，所述第一核心网设备与所述第一接入网设备相连接。
在第三方面中，第一接入网设备向第二接入网设备显示指示第一接入网设备所连接的第一核心网所使用的通信标准，以便第二接入网设备知道第一接入网设备所连接的第一核心网所使用的通信标准，可以为终端切换过程中选择特定通信标准的核心网设备提供参考。
第四方面，提供了一种通信方法，第一核心网设备向第一接入网设备发送第二消息，所述第二消息中包括用于指示所述第一核心网设备所使用的通信标准的信息。
在第四方面中，第一核心网设备通知第一接入网设备，所述第一核心网设备所使用的通信标准，可以为终端切换过程中，选择特定通信标准的核心网设备提供参考。并且第二消息显示指示第一核心网所使用的通信标准，可以降低第一接入网设备解析难度。
第五方面，提供了一种通信装置，所述装置具有实现上述第一方面及第一方面任一可能的实现中的功能，或实现上述第二方面及第二方面任一可能的实现中的功能，或实现上述第三方面及第三方面任一可能的实现中的功能，或实现上述第四方面及第四方面任一可能的实现中的功能。这些功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的功能模块。
第六方面，提供了一种通信装置，包括处理器；所述处理器，用于执行计算机程序或指令，当所述计算机程序或指令被执行时，用于实现上述第一方面及第一方面任一可能的实现的方法中第一接入网设备的功能，或者实现上述第二方面及第二方面任一可能的实现的方法中终端的功能，或者实现上述第三方面及第三方面任一可能的实现的方法中第二接入网设备的功能，或者实现上述第四方面及第四方面任一可能的实现的方法中核心网设备的功能。所述计算机程序或指令可以存储在所述处理器中，也可以存储在存储器中，所述存储器与所述处理器耦合。所述存储器可以位于所述通信装置中，也可以不位于所述通信装置中。
在一种可能的实现中，所述装置还包括：收发器，所述收发器，用于发送所述处理器处理后的信号，或者接收输入给所述处理器的信号。所述收发器可以执行第一方面及第一方面任一可能的实现中第一接入网设备执行的发送动作或接收动作，或者执行第二方面及第二方面任一可能的实现中终端执行的发送动作或接收动作，或者执行第三方面及第三方面任一可能的实现中第二接入网设备执行的发送动作或接收动作，或者执行第四方面及第四方面任一可能的实现中核心网设备执行的发送动作或接收动作。
第七方面，本申请提供了一种通信装置，包括处理器和接口电路，所述接口电路用于接收来自所述通信装置之外的其它通信装置的信号并传输至所述处理器，或将来自所述处理器的信号发送给所述通信装置之外的其它通信装置，所述处理器通过逻辑电路或执行代码指令用于实现上述第一方面及第一方面任一可能的实现的方法中第一接入网设备的功能，或者实现上述第二方面及第二方面任一可能的实现的方法中终端的功能，或者实现上述第三方面及第三方面任一可能的实现的方法中第二接入网设备的功能，或者实现上述第四方面及第四方面任一可能的实现的方法中核心网设备的功能。
在一种可能的实现中，所述通信装置为芯片系统，可以由芯片构成，也可以包括芯片 和其他分立器件。
第八方面，提供了一种计算机可读存储介质，用于存储计算机程序，所述计算机程序包括用于实现第一方面及第一方面任一可能的实现中的功能的指令，或用于实现第二方面及第二方面任一可能的实现中的功能的指令，或用于实现第三方面及第三方面任一可能的实现中的功能的指令，或用于实现第四方面及第四方面任一可能的实现中的功能的指令。
或者，一种计算机可读存储介质，用于存储计算机程序或指令，所述计算机程序或指令被通信装置执行时，实现上述第一方面及第一方面任一可能的实现的方法中第一接入网设备的功能，或者实现上述第二方面及第二方面任一可能的实现的方法中终端的功能，或者实现上述第三方面及第三方面任一可能的实现的方法中第二接入网设备的功能，或者实现上述第四方面及第四方面任一可能的实现的方法中核心网设备的功能。
第九方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行上述第一方面及第一方面任一可能的实现中由第一接入网设备执行的方法，或执行上述第二方面及第二方面任一可能的实现中由终端执行的方法，或执行上述第三方面及第三方面任一可能的实现中由第二接入网设备执行的方法，或执行上述第四方面及第四方面任一可能的实现中由核心网设备执行的方法。
第十方面，提供了一种通信系统，所述通信系统包括：执行上述第一方面及第一方面任一可能的实现的方法中的第一接入网设备和执行上述第二方面及第二方面任一可能的实现的方法中的终端。或者包括执行上述第一方面及第一方面任一可能的实现的方法中的第一接入网设备和执行上述第三方面及第三方面任一可能的实现的方法中的第二接入网设备。或者包括执行上述第一方面及第一方面任一可能的实现的方法中的第一接入网设备和执行上述第四方面及第四方面任一可能的实现的方法中的核心网设备。
上述第五方面至第十方面的技术效果可以参照第一方面至第四方面中的描述，重复之处不再赘述。
附图说明
图1为本申请实施例中提供的一种双连接通信系统架构示意图；
图2为本申请实施例中提供的现有的MR-DC with EPC协议栈示意图；
图3为本申请实施例中提供的现有的MR-DC with 5GC协议栈示意图；
图4为本申请实施例中提供的一种主节点-辅节点的双连接协议栈示意图；
图5为本申请实施例中提供的一种终端协议栈示意图；
图6为本申请实施例中提供的一种通信过程示意图；
图7为本申请实施例中提供的一种双连接的功能示意图；
图8a为本申请实施例中提供的一种双连接协议栈的示意图；
图8b为本申请实施例中提供的一种双连接协议栈的示意图；
图8c为本申请实施例中提供的一种双连接协议栈的示意图；
图9为本申请实施例中提供的一种通信装置结构图；
图10为本申请实施例中提供的一种通信装置结构图。
具体实施方式
下面将结合附图，对本申请实施例进行详细描述。
为便于理解本申请实施例的技术方案，下面将对本申请实施例提供的方法的系统架构进行简要说明。可理解的，本申请实施例描述的系统架构是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定。
本申请实施例的技术方案可以应用于各种通信系统，例如：卫星通信系统、传统的移动通信系统、非地面网络(NTN)通信系统。通信系统例如：无线局域网通信系统，长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、5G或新无线(new radio，NR)移动通信系统，第六代(6th generation，6G)移动通信系统，以及未来的移动通信系统等。
为便于理解本申请实施例，接下来对本请的应用场景进行介绍，本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
图1为本申请实施例提供的通信方法所适用的一种双连接(dual connectivity，DC)通信系统的架构，终端可以接入两个接入网设备，分别为第一接入网设备和第二接入网设备，第一接入网设备与第二接入网设备之间存在连接。这两个接入网设备可以使用不同或相同的通信标准。可选的，第一接入网设备可以连接核心网设备。可选的，第二接入网设备可以连接核心网设备。接入网设备和核心网设备可以使用4G通信标准、5G通信标准或6G通信标准等。
为便于理解本申请实施例，以下对本申请实施例的部分用语及相关技术进行解释说明，以便于本领域技术人员理解。
1)、接入网设备可以是基站(base station)、演进型基站(evolved NodeB，eNodeB)、发送接收点(transmission reception point，TRP)、第五代(5th generation，5G)移动通信系统中的下一代基站(next generation NodeB，gNB)、第六代(6th generation，6G)移动通信系统中的下一代基站、未来移动通信系统中的基站或WiFi系统中的接入节点等；也可以是完成基站部分功能的模块或单元，例如，可以是集中式单元(central unit，CU)，也可以是分布式单元(distributed unit，DU)。接入网设备可以是宏基站，也可以是微基站或室内站，还可以是中继节点或施主节点等。本申请的实施例对接入网设备所采用的具体技术和具体设备形态不做限定。
在本申请的实施例中，接入网设备的功能也可以由接入网设备中的模块(如芯片)来执行，也可以由包含有接入网设备功能的控制子系统来执行。这里的包含有接入网设备功能的控制子系统可以是智能电网、工业控制、智能交通、智慧城市等上述终端的应用场景中的控制中心。
2)、终端也可以称为终端设备、用户设备(user equipment，UE)、移动台、移动终端等。终端可以广泛应用于各种场景，例如，设备到设备(device-to-device，D2D)、车物(vehicle to everything，V2X)通信、机器类通信(machine-type communication，MTC)、物联网(internet of things，IOT)、虚拟现实、增强现实、工业控制、自动驾驶、远程医 疗、智能电网、智能家具、智能办公、智能穿戴、智能交通、智慧城市等。终端可以是手机、平板电脑、带无线收发功能的电脑、可穿戴设备、车辆、无人机、直升机、飞机、轮船、机器人、机械臂、智能家居设备等。本申请的实施例对终端所采用的具体技术和具体设备形态不做限定。
终端的功能也可以由终端中的模块(如芯片或调制解调器)来执行，也可以由包含有终端功能的装置来执行。
接入网设备和终端可以是固定位置的，也可以是可移动的。接入网设备和终端可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对接入网设备和终端的应用场景不做限定。
3)核心网设备例如接入管理网元，是由运营商网络提供的控制面网元，负责终端设备接入运营商网络的接入控制和移动性管理，例如包括移动状态管理，分配用户临时身份标识，认证和用户等功能。在4G通信系统中，该接入管理网元可以是移动管理实体(mobility management entity，MME)。在5G通信系统中，该接入管理网元可以是接入与移动性管理功能(access and mobility management function，AMF)网元。在未来通信系统中，接入管理网元仍可以是AMF网元，或者，还可以有其它的名称，本申请不做限定。
核心网设备例如用户面网元，负责终端设备中用户数据的转发和接收。可以从数据网络接收用户数据，通过接入网设备传输给终端设备；用户面网元还可以通过接入网设备从终端设备接收用户数据，转发到数据网络。用户面网元中为终端设备提供服务的传输资源和调度功能由会话管理功能(session management function，SMF)网元管理控制的。在4G通信系统中，该用户面网元可以是服务网关(serving gatewa，SGW)。在5G通信系统中，该用户面网元可以是用户面功能(user plane function，UPF)网元。在未来通信系统中，用户面网元仍可以是UPF网元，或者，还可以有其它的名称，本申请不做限定。
4)接下来对双连接通信系统进行详细介绍。为了便于描述，下文的部分内容中以基站作为接入网设备的例子进行描述。
在NR的第一个版本，即版本15(Release 15，R15)，针对运营商的部署需求(一开始NR基站不会大规模部署、仅作为部分热点进行局部部署，因此以非独立组网的方式服务UE，来提升UE的上下行传输速率)，支持LTE系统和NR系统之间的分流，有两种选择：
选择1：跨无线接入技术(Cross-radio access technology，RAT)载波聚合(carrier aggregation，CA)，即X-RAT CA方式，这种方式需要LTE基站和NR基站之间是理想回程线路backhaul(即ms、甚至us级别的传输时延，一般只有光纤才能满足该需求)，而大部分国家或区域的光纤部署是极其稀缺的，因此X-RAT CA的实际部署概率较低。
选择2：X-RAT双连接DC方式，这种方式不需要LTE基站和NR基站之间是理想backhaul，因此最终采用该方式；并在NR R15中标准化X-RAT DC的相关方案。
在NR R15中，提出了多模双连接(multi radio dual connectivity，MR-DC)的多种组网选择option，具体如下。
opt2/2a/2x：也可以称为NR DC组网方式，终端同时连接到两个5G的NR基站，主节点(master node，MN)、辅节点(slave node，SN)都为NR基站(gNB)，主节点和/或辅节点连接5G核心网设备(例如连接AMF设备和/或UPF设备)。其中，节点可以看做是接入网设备。
opt3/3a/3x：也可以称为EN-DC(E-UTRA和NR的DC)组网方式，终端同时连接到4G的LTE基站和5G的NR基站，主节点为eLTE基站(e-eNB)、辅节点为NR基站(gNB)，主节点和/或辅节点连接4G CN(例如连接MME设备和/或SGW设备)。
opt4/4a/4x：也可以称为NE-DC(NR、E-UTRA-DC)组网方式，终端同时连接到4G的LTE基站和5G的NR基站，主节点为NR基站(gNB)、辅节点为eLTE基站(e-eNB)，主节点和/或辅节点连接5G核心网设备(例如连接AMF设备和/或UPF设备)。
opt7/7a/7x：也可以称为NGEN-DC(下一代(next generation，NG)E-UTRA和NR的DC)组网方式，终端同时连接到4G的LTE基站和5G的NR基站，主节点为eLTE基站(e-eNB)、辅节点为NR基站(gNB)，主节点和辅节点连接5G核心网设备(例如连接AMF设备和/或UPF设备)。
以opt2/2a/2x为例，再进行详细说明：
opt2是指核心网的用户面设备(或用户面网元)仅连接主节点MN，不连接辅节点SN，由主节点MN给辅节点SN进行UE数据分流。
opt2a是指核心网(core network，CN)的用户面设备同时连接主节点MN和辅节点SN，主节点MN和辅节点SN之间没有数据分流路径，由CN网元进行数据分流决策。
opt2x是指核心网的用户面设备仅连接辅节点SN，不连接主节点MN，辅节点SN与主节点MN之间有数据分流路径，由辅节点SN给主节点MN进行UE数据分流。
在上述opt2/2a/2x的任一架构中，核心网的控制面设备(或控制面网元)仅连接主节点MN，不连接辅节点SN。
opt3/3a/3x，opt4/4a/4x，opt7/7a/7x与opt2/2a/2x类似，不再重复赘述。
为了支持上述介绍的4种组网架构(即opt2/2a/2x；opt3/3a/3x；opt4/4a/4x；opt7/7a/7x)，NR R15提供了两种不同的协议栈及对应方案：
如图2所示的协议栈，称为MR-DC with演进分组核心网(evolved packet core，EPC)，对应上述EN-DC组网架构(即opt3/3a/3x)，主节点连接4G核心网控制面设备。
如图3所示的协议栈，称为MR-DC with第五代核心网(5GC)，对应上述NE-DC、NGEN-DC和NR-DC三种组网架构之和，主节点连接5G核心网控制面设备。
结合上述介绍的两个协议栈，对4G通信标准中和5G通信标准中包括的协议层进行介绍。
在4G通信标准中，用户面协议层包括从上至下的：PDCP层、RLC层、MAC层、PHY层。控制面协议层包括从上至下的：无线资源控制(radio resource control，RRC)层、PDCP层、RLC层、MAC层、PHY层。各个层的功能可以参见4G通信标准中介绍的功能，不再详细介绍。
在5G通信标准中，用户面协议层包括从上至下的：SDAP层、PDCP层、RLC层、MAC层、PHY层。控制面协议层包括从上至下的：RRC层、PDCP层、RLC层、MAC层、PHY层。各个层的功能可以参见5G通信标准中介绍的功能，不再详细介绍。
上述介绍的两个协议栈的区别如下：
区别1：SDAP层，SDAP层是5G相对于4G新引入的一层，仅针对用户面存在，SDAP层主要用于在空口上执行UE和gNB之间的QoS flow到DRB映射的功能。在图2所示的协议栈MR-DC with EPC中，主节点和辅节点连接的是4G核心网设备，主节点、辅节点、以及UE的协议栈中不包括SDAP层。在图3所示的协议栈MR-DC with 5GC中，主节点 和辅节点连接的是5G核心网设备，主节点、辅节点、以及UE的协议栈中包括SDAP层。
区别2：PDCP层，在图2所示的协议栈MR-DC with EPC中，针对MN终止的主小区组(master cell group，MCG)承载(MN terminated MCG bearer)(即MN连接CN，终端在该承载上的数据是通过MN进行传输的、而不通过SN进行传输)，同时支持E-UTRA PDCP和NR PDCP两个模块(或实体)；但在图3所示的协议栈MR-DC with 5GC中，针对MN terminated MCG bearer，仅支持NR PDCP模块。
区别3：主节点和辅节点之间通信的接口：X2接口、Xn接口。在图2所示的协议栈MR-DC with EPC中，主节点MN和辅节点SN之间采用4G(LTE)通信标准中定义的X2接口或协议，来承载/传输节点间的通信消息/信令。而在图3所示的协议栈MR-DC with 5GC中，主节点MN和辅节点SN之间采用5G(NR)通信标准中定义的Xn接口或协议，来承载/传输节点间的通信消息/信令。
两个协议栈中的辅小区组(slave cell group，SCG)承载(bearer)、分流承载(Split bearer)不再详细介绍。
上文已介绍本申请实施例的部分用语及相关技术，接下来将结合附图对本申请的技术方案进行详细介绍。附图中以虚线标识的特征或内容可理解为本申请实施例的可选操作或者可选结构。
本申请提出了一种新的双连接协议栈，分为三部分。第一，对双连接协议栈中包括的协议层所使用的通信标准进行统一。第二，对双连接协议栈中包括的用于两节点连接的接口(例如定义为无线接入网(radio access network，RAN)-RAN接口)所使用的通信标准进行统一。第三，双连接协议栈兼容多种通信标准中定义的用于主节点与核心网设备连接的接口(例如定义为CN-RAN接口)。第四，新的双连接协议栈相当于对于图2、图3的MR-DC协议栈，删减部分功能，以减少系统复杂度。针对这四部分，以下分为四个实施例进行介绍。这四个实施例可单独作为一个实施例，也可以是两个或三个或四个实施例相互组合，组成新的实施例。
实施例1：对双连接协议栈中包括的协议层所使用的通信标准进行统一。
相对于5G通信标准，在后续的通信标准中(例如6G通信标准或第七代(7th generation，7G)通信标准)，规定的协议层可能是相同的，也可能在5G等通信标准中规定的协议层的基础上，删减一个或多个协议层，或增加一个或多个新的协议层。例如删减PDCP层或SDAP层等。例如，在SDAP层之上增加一个或多个新的协议层。例如，在PDCP层之上增加一个或多个新的协议层。例如，在PDCP层之下增加一个或多个新的协议层。本申请将增加的新的协议层定义为xDAP层，该xDAP层实现的功能可以是以下功能的至少一项：部分核心网的功能，部分SDAP层的功能、部分RLC层的功能。本申请对xDAP层的功能不做具体限定。本申请提供的新的双连接协议栈包括：xDAP层、SDAP层、PDCP层、RLC层、MAC层、PHY层中的一部分层或全部层。在主节点连接不同通信标准的核心网设备的场景下，双连接协议栈中的协议层所使用的通信标准是统一的。
以xDAP层为例，主节点的协议栈和辅节点的协议栈中的xDAP层为6G通信标准的xDAP层，或7G通信标准的xDAP层，或最新版本的通信标准的xDAP层。
以SDAP层为例，主节点的协议栈和辅节点的协议栈中的SDAP层为5G通信标准的SADP层、或6G通信标准的SDAP层，或7G通信标准的SDAP层，或最新版本的通信标准的SDAP层。
以PDCP层为例，主节点的协议栈和辅节点的协议栈中的PDCP层为4G通信标准的PDCP层、5G通信标准的SADP层、或6G通信标准的PDCP层，或7G通信标准的PDCP层，或最新版本的通信标准的PDCP层。示例的，参见图2和图3，在主节点连接不同通信标准的核心网设备时，针对MN terminated MCG bearer，PDCP层所使用的通信标准不同。而在本申请提供的新的双连接协议栈中，针对MN terminated MCG bearer，PDCP层使用的通信标准是相同的，例如最新版本的通信标准的PDCP层。
以RLC层、MAC层、PHY层为例，在主节点的协议栈中，RLC层、MAC层、PHY层分别为主节点所使用的通信标准的RLC层、主节点所使用的通信标准MAC层、主节点所使用的通信标准PHY层。在辅节点的协议栈中，RLC层、MAC层、PHY层分别为辅节点所使用的通信标准的RLC层、辅节点所使用的通信标准的MAC层、辅节点所使用的通信标准的PHY层。例如，主节点所使用的通信标准为5G通信标准、6G通信标准、或7G通信标准、或后续出现的通信标准。辅节点所使用的通信标准为5G通信标准、6G通信标准、或7G通信标准、或后续出现的通信标准。
上述的4G通信标准也可以替换为演进的通用陆地无线接入(evolved universal terrestrial radio access，E-UTRA)，5G通信标准也可以替换为NR，6G也可以替换为能够表示6G的任一名称，7G也可以替换为能够表示7G的任一名称。
如图4所示，本申请提供了一种双连接协议栈的示意图(与图2、图3重复的部分，可以参见现有标准规定，不再重复赘述)。不管主节点连接5G核心网设备，或连接6G核心网设备。在主节点的协议栈和辅节点的协议栈中，xDAP层、SDAP层、PDCP层分别为6G通信标准的xDAP层、6G通信标准的SDAP层、6G通信标准的PDCP层。在主节点的协议栈中，RLC层、MAC层分别为主节点所使用的通信标准的RLC层(即MN RLC)、主节点所使用的通信标准MAC层(即MN MAC)。在辅节点的协议栈中，RLC层、MAC层分别为辅节点所使用的通信标准的RLC层(即SN RLC)、辅节点所使用的通信标准的MAC层(即SN MAC)。
上述已经介绍，在后续通信标准中，对于协议层的规定，可能删除一个或多个，或增加一个或多个。为了兼容后续通信标准中可能规定的协议层，以及现有通信标准中已规定的协议层，灵活地为终端配置DRB的相关信息，可选的，本申请提供的新的双连接协议栈，还可以包括协议层对应的状态开关，该状态开关有两种状态，分别为第一状态和第二状态。第一状态用于指示不执行该协议层的功能，或该协议层的功能关闭，或该协议层只是透传数据包，数据包中不包括该协议层的包头。第二状态用于指示执行该协议层的功能，或该协议层的功能打开，或数据包中包括该协议层的包头。“状态”只是一种功能的定义，只要能够表达其功能的名称均可适用，例如将“状态”替换为“模式”，第一模式也可以称为透明模式，第二模式也可以称为非透明模式。第一状态也可以称为开启状态，第二状态也可以称为关闭状态。
示例的，本申请提供的新的双连接协议栈中，针对xDAP层、SADP层、PDCP层中的一个或多个层分别设置状态开关。
主节点或辅节点中的协议层是第一状态还是第二状态，取决于主节点连接的核心网设备所使用的通信标准。主节点连接的核心网设备所使用的通信标准根据主节点所处的双连接架构确定。接下来以6G通信标准中新增xDAP层为例介绍状态开关的状态。
例如，针对EN-DC类似(like)的5G/6G DC架构，MN为NR基站，SN为6G基站， CN为5G CN。MN和SN的协议栈中均没有该xDAP层；或者MN和SN的协议栈中均有该xDAP层，但该xDAP层的状态开关为第一状态(或透明模式)，该xDAP层所有功能关闭。
再例如，针对NGEN-DC like的5G/6G DC架构，MN为NR基站，SN为6G基站，CN为6G CN。因为接的是6G CN，因此需要针对MN和SN都要引入或打开该xDAP层，该xDAP层的状态开关为第二状态(或非透明模式)，该xDAP层所有功能打开。
再例如，对NE-DC like的5G/6G DC架构，MN为6G基站，SN为NR基站，CN为6G CN)，该xDAP层的状态开关为第二状态(或非透明模式)。
再例如，对NR-DC like的6G/6G DC架构(MN为6G基站，SN为6G基站，CN为6G CN)，该xDAP层的状态开关为第二状态(或非透明模式)。
接下来结合上述介绍的双连接协议栈，对终端协议栈进行介绍。
示例的，终端协议栈包括的协议层，与上述介绍的双连接协议栈包括的协议层相同，并且终端协议栈中的每个协议层所采用的通信标准也与上述介绍的双连接协议栈中对于协议层所采用的通信标准相同。
如图5所示，提供了一种与图4所示的双连接协议栈对应的终端协议栈。xDAP层、SDAP层、PDCP层分别为6G通信标准的xDAP层、6G通信标准的SDAP层、6G通信标准的PDCP层。RLC层、MAC层分别为主节点所使用的通信标准的RLC层(即MN RLC)、主节点所使用的通信标准MAC层(即MN MAC)，以及辅节点所使用的通信标准的RLC层(即SN RLC)、辅节点所使用的通信标准的MAC层(即SN MAC)。
可选的，终端协议栈中也可以包括xDAP层、SDAP层、PDCP层、RLC层、MAC层、PHY层中的一部分层或全部层。例如，不包括xDAP层和/或SDAP层。
接下来结合上述介绍的双连接协议栈，介绍第一接入网设备向终端配置数据无线承载DRB的协议层的相关信息的示例。第一接入网设备可以是主节点。
如图6所示，提供了一种通信过程示意图，包括以下步骤：
需要说明的是，第一接入网设备与第一核心网设备相连接，所述第一核心网设备使用第一通信标准或者使用第二通信标准。
步骤601：第一接入网设备确定第一配置信息。
步骤602：所述第一接入网设备向终端发送所述第一配置信息。相应的，终端接收来自所述第一接入网设备的第一配置信息。
步骤603：终端根据所述第一配置信息与所述第一接入网设备通信。
一种示例中，所述第一配置信息包括所述第二通信标准的第一协议层的状态指示信息，所述第一协议层包括业务数据适配协议SDAP层。所述状态指示信息指示所述第一协议层的第一状态或第二状态，所述第一状态指示终端执行所述第一协议层的功能，所述第二状态指示所述终端设备不执行所述第一协议层的功能。上述介绍了“状态”可以替换为“模式”，此处不再重复赘述。
不管第一接入网设备接入的第一核心网设备是使用第一通信标准，还是使用第二通信标准，第一接入网设备对为终端配置的第一协议层所使用的通信标准统一为第二通信标准。这样，对于终端来说，不管终端是处于什么场景中，例如，EN-DC场景，或NE-DC、NGEN-DC 和NR-DC等，终端只需要支持一个统一的第二通信标准的第一协议层功能即可，无需支持多套协议栈功能。另外，由于对现有技术中的两套协议栈进行统一，后续不会再涉及到协议栈升级的场景。
并且，对于第一协议层(例如SDAP层)设置两种状态，分别指示是否执行该第一协议层的功能。第一接入网设备可以结合通信标准(例如核心网设备所使用的通信标准)中是否规定该协议层，决定该第一协议层的状态是第一状态还是第二状态。例如，通信标准中未规定SDAP层，则配置该SDAP层的状态为第二状态。例如通信标准中规定了SDAP层，则配置该SDAP层的状态为第一状态。基于这种配置状态的方式，可以实现灵活地为终端配置DRB的协议层相关信息。
第二通信标准可以是4G通信标准、5G通信标准、6G通信标准、或7G通信标准、或后续出现的任一通信标准。一种示例中，第二通信标准为已存在的通信标准中最新的通信标准，或者说，第二通信标准相对于第一通信标准来说，是新版本的通信标准。
可选的，所述第一配置信息还包括第二通信标准的第一协议层的其它相关信息。例如，现有技术中的关于协议层的信息。
可选的，所述第一协议层还包括但不限于：PDCP层、xDAP层中的至少一个。也就是第一接入网设备可以向终端配置第二通信标准的PDCP层的相关信息、第二通信标准的xDAP层的相关信息等。
可选的，所述第一配置信息不包括第一通信标准的第一协议层的相关信息。
可选的，所述第一配置信息还可以包括但不限于：第三通信标准的RLC层的相关信息、第三通信标准的MAC层的相关信息、第三通信标准的PHY层的相关信息中一项或多项。第三通信标准为第一接入网设备所使用的通信标准。例如，第一接入网设备所使用的通信标准为5G通信标准，或6G通信标准，或7G通信标准，或者后续出现的任一通信标准。
上述第一配置信息中的内容可以是主节点生成的，也可以是辅节点生成后发送给主节点，再由主节点配置给终端的。
可以理解的是，在双连接协议栈已经规定好的基础上，第一接入网设备在向终端配置关于DRB的协议层的相关信息时，可以总是按照上述介绍的第一配置信息进行配置。
另外，第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)的RRC协议中，例如技术规范(technical specification，TS)36.331和TS 38.331，描述了MR-DC相关流程，针对EN-DC、NGEN-DC、NR-DC、NE-DC等架构分别描述流程，这些流程的行为大致相同、仅有细微差异。本申请提出了统一的双连接协议栈，因此对MN RRC和SN RRC，后续的通信标准中也可以减少描述量。
实施例2：对双连接协议栈中包括的用于两节点连接的接口(例如定义为RAN-RAN接口)所使用的通信标准进行统一。
结合图2和图3所示，主节点连接4G核心网设备时，主节点与辅节点采用4G通信标准中定义的X2接口连接；主节点连接5G核心网设备时，主节点与辅节点采用5G通信标准中定义的Xn接口连接。
当4G核心网设备升级到5G核心网设备时，基站侧的组网架构也要进行升级，例如从EN-DC架构升级到NGEN-DC架构。上文已经介绍了，在EN-DC架构中，主节点是e-eNB，主节点连接4G核心网设备；在NGEN-DC架构中，主节点是e-eNB，主节点连接5G核心网设备。NGEN-DC架构中的主节点e-eNB相对于EN-DC结构中的主节点e-eNB，已经存 在升级。在由于核心网设备的升级，需要将EN-DC架构升级到NGEN-DC架构时，需要主节点eeNB再次进行升级或重新升级，以支持从X2接口到Xn接口的转变。
本申请提供的新的双连接协议栈，对两个接入网设备连接的接口(例如定义为RAN-RAN接口)进行统一。下文将两个接入网设备之间连接的接口称为第一接口。
在主节点连接第一通信标准或第二通信标准或其它的通信标准的核心网设备时，主节点和辅节点之间的第一接口所使用的通信标准是相同的。例如，主节点与第一通信标准的核心网设备相连接时，主节点与辅节点之间的第一接口为第二通信标准中定义的接口；主节点与第二通信标准的核心网设备相连接时，主节点与辅节点之间的第一接口为第二通信标准中定义的接口；主节点与第三通信标准的核心网设备相连接时，主节点与辅节点之间的第一接口为第二通信标准中定义的接口。
第二通信标准可以是4G通信标准、5G通信标准、6G通信标准、或7G通信标准、或后续出现的任一通信标准。一种示例中，第二通信标准为已存在的通信标准中最新的通信标准，或者说，第二通信标准相对于第一通信标准、第三通信标准来说，是新版本的通信标准。
例如，如图4所示。不管主节点连接5G核心网设备还是6G核心网设备，主节点与辅节点均采用6G通信标准中定义的第一接口(例如X6接口)相连接。这样，在进行核心网升级时，可以避免第一接口的升级而带来的繁琐。
另外，在终端切换场景中，需要区分目标小区。例如，只允许切换到连接到6G核心网设备的6G基站，不允许切换到连接到5G核心网设备的6G基站，因此终端需要知道核心网设备所使用的通信标准。接入设备可以告知终端，当前连接的核心网设备所使用的通信标准，这样终端就可以选择合适的通信系统进行切换。在双连接场景中，两个节点可以交互各自连接的核心网设备所使用的通信标准(需要注意的是，在交互核心网设备所使用的通信标准时，两个节点还未分出主、辅)。
目前，双连接场景中的第一节点通过X2接口或Xn接口向第二节点发送消息时，第二节点可以根据消息的格式，确定出第一节点连接的核心网所使用的通信标准是4G通信标准还是5G通信标准。而在对第一接口所使用的通信标准进行统一之后，无法通过消息的格式确定出核心网设备所使用的通信标准。基于此，本申请又提出了一种示例：第一节点可以向第二节点显示指示核心网设备所使用的通信标准。例如，第一接入网设备向第二接入网设备发送第一消息，所述第一消息中包括用于指示所述第一核心网设备所使用的通信标准的信息，所述第一核心网设备与所述第一接入网设备相连接。相应的，所述第二接入网设备接收来自所述第一接入网设备发送的所述第一消息。可选的，第一接入网设备为主节点，第二接入网设备为辅节点。
在一个示例中，所述第一接入网设备向第二接入网设备发送第一消息，具体包括：所述第一接入网设备通过使用第二通信标准的第一接口，向所述第二接入网设备发送所述第一消息。相应的，所述第二接入网设备接收来自所述第一接入网设备发送的第一消息，具体包括：所述第二接入网设备通过使用第二通信标准的第一接口，接收来自所述第一接入网设备发送所述第一消息。第二通信标准的第一接口不但传输第一消息，也可以传输现有的DC中传输的消息。例如，主节点MN和辅节点SN协商中的消息。例如，由于UE的能力约束、导致部分功能或特性(比如UE上行功率恒定)需要在MN和SN之间共享。例如，如果UE的上行到主节点MN和辅节点SN并发，需要确定给MN和SN的功率配 比(例如7:3，MN的功率占总发射功率的70％；SN的功率占总发射功率的30％)；类似的还有更多参数需要协商。例如MN和SN不能同时给某个UE配置相同频点的测量或全球小区识别码(cell global identifier，CGI)上报、MN和SN同时给某个UE配置的测量对象(measuring object)总数受限等等。另外，MN可以获取到SN给UE下发的配置，可以理解的是，这些配置基于此机制进行协商；SN也是类似。现有的DC中传输的消息也可以是现有的X2或Xn消息，例如为了支持SN的增加/修改/删除，以及MN的变更，以及从DC架构到非DC架构之间的切换等流程，需要在站间通过X2/Xn信令传输消息；这些消息可以是MN触发的、也可以是SN触发的。
现有的DC中传输的消息，例如主节点和辅节点通知各自支持的能力的消息，例如从DC架构到非DC架构的切换流程中的消息。
接下来介绍第一接入网设备获知第一核心网设备所使用的通信标准的示例。
例如，所述第一接入网设备接收第二消息，所述第二消息中包括用于指示所述第一核心网设备所使用的通信标准的信息。第一接入网设备知道其连接的第一核心网设备所使用的通信标准，可以为终端切换过程中，选择特定通信标准的核心网设备提供参考。并且在该可能的实现中，第二消息显示指示第一核心网所使用的通信标准，可以降低第一接入网设备解析难度。
一种示例中，所述第一接入网设备接收来自所述第一核心网设备的所述第二消息。相应的，所述第一核心网设备向所述第一接入网设备发送所述第二消息。
一种示例中，所述第一接入网设备接收来自操作维护OM设备的所述第二消息。相应的，所述操作维护OM设备向所述第一接入网设备发送所述第二消息。
实施例3：双连接协议栈兼容多种通信标准中定义的用于主节点与核心网设备连接的接口。
目前，接入网设备连接4G核心网设备时，接入网设备与4G核心网设备采用4G通信标准中定义的S1接口连接；接入网设备连接5G核心网设备时，接入网设备与5G核心网设备采用5G通信标准中定义的Ng接口连接。接入网设备只支持一种通信标准中定义的接入网设备与核心网设备连接的接口。在实施例2中已经介绍，在核心网设备升级时，需要支持从X2接口到Xn接口的转变。对于接入网设备与核心网设备连接，也需要支持从S1接口到Ng接口的转变，同样存在升级繁琐的问题。
本申请提出的新的双连接新协议栈，包括多个通信标准中定义的用于接入网设备与核心网设备之间连接的接口，例如，包括4G通信标准中定义的S1接口，5G通信标准中定义的Ng接口、6G通信标准中定义的用于接入网设备与核心网设备之间连接的接口(例如称为N6接口)、7G通信标准中定义的用于接入网设备与核心网设备之间连接的接口(例如称为N7接口)中的两个或更多个。
可选的，还可以设置选择性开关，不管核心网设备采用哪个通信标准，接入网设备只需要选择到对应通信标准的接口与核心网设备连接即可，无需进行接口升级。例如，在连接5G核心网设备时采用Ng接口连接，在连接6G核心网设备时，采用N6接口连接。
一种示例中，所述第一接入网设备支持第一通信标准中定义的第二接口和第二通信标准中定义的第三接口。第一核心网使用第一通信标准时，所述第一接入网设备通过所述第二接口与使用所述第一通信标准的所述第一核心网设备连接；或者，第一核心网使用第二通信标准时，所述第一接入网设备通过所述第三接口与使用所述第二通信标准的所述第一 核心网设备连接。
在现有技术中，接入网设备只支持一种通信标准中定义的接入网设备与核心网设备连接的接口，例如只支持第二接口或第三接口。当第一接入网设备由连接第一通信标准的核心网设备，转换为连接第二通信标准的核心网设备时，接入网设备需要将第二接口升级到第三接口。或者，当第一接入网设备由连接第二通信标准的核心网设备，转换为连接第一通信标准的核心网设备时，接入网设备需要将第三接口升级到第二接口。升级过程比较繁琐。而在该可能的实现中，第一接入网设备支持多种通信标准中定义的接入网设备与核心网设备连接的接口，当第一核心网设备所使用的通信标准更新后，第一接入网设备可以灵活地选择对应通信标准中定义的接口，与第一核心网设备连接，无需进行接口升级。
实施例4：新的双连接协议栈相当于对于图2、图3的MR-DC协议栈，删减部分功能，以减少系统复杂度。
在6G的双连接架构中，为了减少系统复杂度，可以适当删减NR中MR-DC定义的功能，可能有如下如图7所示的3种示例(分别为Alt-1、Alt-2、Alt-3)：
如图7所示，Alt-1：仅支持EN-DC like Solution，仅支持SN terminated SCG bearer和/或split bearer，不支持MN terminated的MCG bearer、SCG bearer、split bearer。
如图8a所示，主节点MN仅支持Ng接口，不支持N6。仅有辅节点SN连接6GC的用户面(user plane，UP)。EN-DC like的双连接协议栈，数据分流仅支持SN terminated bearer(示例的split bearer)。
如图7所示，Alt-2：仅支持EN-DC like和NR-DC like的方案(对应6G DC中的N6-DC和6G-DC)，也仅支持SN terminated SCG bearer和/或split bearer。
如图8b所示，主节点MN同时支持Ng和N6接口，但选择性切换。仅有辅节点SN连接6GC的用户面UP。MR-DC like的双连接协议栈，数据分流仅支持SN terminated split bearer。
如图7所示，Alt-3：仅支持EN-DC like和NR-DC like的方案(对应6G DC中的N6-DC和6G-DC)，同时支持MN terminated的MCG bearer、SCG bearer、split bearer，以及SN terminated的bearer，例如，SCG bearer和/或split bearer。
如图8c所示，主节点MN同时支持Ng和N6接口，但选择性切换。MN和SN都连接6GC的用户面UP。MR-DC like的双连接协议栈，数据分流同时支持MN和SN terminated。
需要注意的是，图8a、图8b、图8c中包括的协议层仅是一种示例，也可以在这些协议层的基础上删除一部分协议层，例如删除xDAP层，SDAP层等。
本实施例设计的简化的DC架构，通过删减NR中MR-DC定义的功能，减少协议复杂度和系统复杂度，可灵活用于多种网络、多种基站类型、多种载波和频谱类型，是未来的发展方向。例如适用于多种类型的接入点网络，例如，地面网络，非地面网络，无人机网络，MAV网络，卫星网络等。
可以理解的是，为了实现上述实施例中功能，接入网设备、终端、核心网设备包括了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本申请中所公开的实施例描述的各示例的单元及方法步骤，本申请能够以硬件或硬件和计算机软件相结合的形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用场景和设计约束条件。
图9和图10为本申请的实施例提供的可能的通信装置的结构示意图。这些通信装置可以用于实现上述方法实施例中接入网设备、或终端、或核心网设备的功能，因此也能实现上述方法实施例所具备的有益效果。
如图9所示，通信装置900包括处理模块910和收发模块920。通信装置900用于实现上述方法实施例中接入网设备、或终端、或核心网设备的功能。
当通信装置900用于实现图6所示的方法实施例中终端的功能时：收发模块920用于接收第一配置信息；处理模块910用于根据所述第一配置信息与第一接入网设备进行通信。
当通信装置900用于实现图6所示的方法实施例中第一接入网设备的功能时：收发模块920用于发送所述第一配置信息；处理模块910用于确定所述第一配置信息，根据所述第一配置信息与终端进行通信。
有关上述处理模块910和收发模块920更详细的描述可以直接参考上述方法实施例中相关描述直接得到，这里不加赘述。
如图10所示，通信装置1000包括处理器1010和接口电路1020。处理器1010和接口电路1020之间相互耦合。可以理解的是，接口电路1020可以为收发器或输入输出接口。可选的，通信装置1000还可以包括存储器1030，用于存储处理器1010执行的指令或存储处理器1010运行指令所需要的输入数据或存储处理器1010运行指令后产生的数据。
当通信装置1000用于实现图6所示的方法时，处理器1010用于实现上述处理模块910的功能，接口电路1020用于实现上述收发模块920的功能。
当上述通信装置为应用于终端设备的芯片时，该终端设备芯片实现上述方法实施例中终端设备的功能。该终端设备芯片从终端设备中的其它模块(如射频模块或天线)接收信息，该信息是网络设备发送给终端设备的；或者，该终端设备芯片向终端设备中的其它模块(如射频模块或天线)发送信息，该信息是终端设备发送给网络设备的。
当上述通信装置为应用于接入网设备的芯片时，该接入网设备芯片实现上述方法实施例中接入网设备的功能。该接入网设备芯片从接入网设备中的其它模块(如射频模块或天线)接收信息，该信息是终端设备发送给接入网设备的；或者，该接入网设备芯片向接入网设备中的其它模块(如射频模块或天线)发送信息，该信息是接入网设备发送给终端设备的。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元(Central Processing Unit，CPU)，还可以是其它通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其它可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请的实施例中的方法步骤可以通过硬件的方式来实现，也可以由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器、闪存、只读存储器、可编程只读存储器、可擦除可编程只读存储器、电可擦除可编程只读存储器、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于网络设备或终端设备中。当然，处理器和存储介质也可以作为分立组件存在于网络设备或终端设备中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时，全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其它可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机程序或指令可以从一个网站站点、计算机、服务器或数据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，数字视频光盘；还可以是半导体介质，例如，固态硬盘。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。在本申请的文字描述中，字符“/”，一般表示前后关联对象是一种“或”的关系；在本申请的公式中，字符“/”，表示前后关联对象是一种“相除”的关系。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定。

Claims (11)

  1. 一种通信方法，其特征在于，包括：
    第一接入网设备确定第一配置信息，所述第一接入网设备与第一核心网设备相连接，所述第一核心网设备使用第一通信标准或者使用第二通信标准；所述第一配置信息包括所述第二通信标准的第一协议层的状态指示信息；其中，所述状态指示信息指示所述第一协议层的第一状态或第二状态，所述第一状态指示终端执行所述第一协议层的功能，所述第二状态指示终端不执行所述第一协议层的功能；所述第一协议层包括业务数据适配协议SDAP层；
    所述第一接入网设备向所述终端发送所述第一配置信息。
  2. 如权利要求1所述的方法，其特征在于，还包括：
    所述第一接入网设备向第二接入网设备发送第一消息，所述第一消息中包括用于指示所述第一核心网设备所使用的通信标准的信息。
  3. 如权利要求2所述的方法，其特征在于，所述第一接入网设备向第二接入网设备发送第一消息，具体包括：
    所述第一接入网设备通过使用所述第二通信标准的第一接口，向所述第二接入网设备发送所述第一消息。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述第一接入网设备支持所述第二接口和所述第三接口；
    所述第一接入网设备通过第二接口与使用所述第一通信标准的所述第一核心网设备连接，所述第二接口在所述第一通信标准中定义；或者，所述第一接入网设备通过第三接口与使用所述第二通信标准的所述第一核心网设备连接，所述第三接口在所述第二通信标准中定义。
  5. 如权利要求1-4任一项所述的方法，其特征在于，还包括：
    所述第一接入网设备接收第二消息，所述第二消息中包括用于指示所述第一核心网设备所使用的通信标准的信息。
  6. 如权利要求5所述的方法，其特征在于，所述第一接入网设备接收第二消息，具体包括：
    所述第一接入网设备接收来自所述第一核心网设备的所述第二消息；或者，
    所述第一接入网设备接收来自操作维护OM设备的所述第二消息。
  7. 一种通信方法，其特征在于，包括：
    终端接收来自第一接入网设备的第一配置信息，所述第一接入网设备与第一核心网设备相连接，所述第一核心网设备使用第一通信标准或者使用第二通信标准；所述第一配置信息包括：所述第二通信标准的第一协议层的状态指示信息；其中，所述状态指示信息指示所述第一协议层的第一状态或第二状态，所述第一状态指示所述终端执行所述第一协议层的功能，所述第二状态指示所述终端不执行所述第一协议层的功能；所述第一协议层包括业务数据适配协议SDAP层；
    所述终端根据所述第一配置信息与所述第一接入网设备通信。
  8. 一种通信装置，其特征在于，包括用于执行如权利要求1至7中的任一项所述方法的模块。
  9. 一种通信装置，其特征在于，包括处理器；
    所述处理器，用于执行计算机程序或指令，当所述计算机程序或指令被执行时，用于实现如权利要求1-7中任一项所述的方法。
  10. 一种通信装置，其特征在于，包括处理器和接口电路，所述接口电路用于接收来自所述通信装置之外的其它通信装置的信号并传输至所述处理器，或将来自所述处理器的信号发送给所述通信装置之外的其它通信装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求1至7中任一项所述的方法。
  11. 一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序或指令，当所述计算机程序或指令被通信装置执行时，实现如权利要求1至7中任一项所述的方法。
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US20180295032A1 (en) * 2015-05-29 2018-10-11 Nokia Technologies Oy Support of Flexible Radio Protocol in 5G Radio Access Network
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CN104349389A (zh) * 2013-08-02 2015-02-11 上海贝尔股份有限公司 用于建立无线承载的方法和装置
US20180295032A1 (en) * 2015-05-29 2018-10-11 Nokia Technologies Oy Support of Flexible Radio Protocol in 5G Radio Access Network
WO2017117804A1 (zh) * 2016-01-08 2017-07-13 华为技术有限公司 终端设备、接入网设备、空口配置方法和无线通信系统
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