WO2018127018A1 - 多链接通信方法、设备和终端 - Google Patents

多链接通信方法、设备和终端 Download PDF

Info

Publication number
WO2018127018A1
WO2018127018A1 PCT/CN2017/120219 CN2017120219W WO2018127018A1 WO 2018127018 A1 WO2018127018 A1 WO 2018127018A1 CN 2017120219 W CN2017120219 W CN 2017120219W WO 2018127018 A1 WO2018127018 A1 WO 2018127018A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
rrc
secondary base
terminal
rrc message
Prior art date
Application number
PCT/CN2017/120219
Other languages
English (en)
French (fr)
Inventor
石小丽
彭文杰
张宏卓
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2019536837A priority Critical patent/JP6888099B2/ja
Priority to KR1020197022297A priority patent/KR102337091B1/ko
Priority to BR112019013801A priority patent/BR112019013801A2/pt
Priority to EP17890433.0A priority patent/EP3565287B1/en
Publication of WO2018127018A1 publication Critical patent/WO2018127018A1/zh
Priority to US16/504,130 priority patent/US10772146B2/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H04W76/16—Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/20—Master-slave selection or change arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a multi-link communication method, device, and terminal.
  • the 5th Generation mobile communication technology (5G) system or the new wireless access technology (NR, New radio) is coming soon, and the 5G system or NR system can provide the ratio.
  • Long Term Evolution (LTE) network has a faster transmission rate, and its maximum theoretical transmission rate can reach tens of gigabytes per second (Gigabyte, Gb for short).
  • the 5G system proposes a multi-link transmission method, that is, the terminal can simultaneously access the LT E network and the 5G system, and simultaneously transmit the terminal data through the LTE network and the base station of the 5G system.
  • the data offload anchor point is in the LTE network, that is, the base station that passes the LTE network is the primary base station, and the NR network base station is the secondary base station, and the data of the main base station offloaded part is transmitted to the terminal through the secondary base station, and the data is mainly Transmission over the LTE network can increase the data transmission rate compared to the data transmission on the LTE network alone, but it does not take advantage of the data transmission rate of the 5G system.
  • RRC Radio Resource Control
  • NR gNB 5G base station
  • the LTE-NR multi-link technology network includes an LTE core network (EPC, E-utran packet core), and a new Core network (NGC, NG-core), LTE base station (eNB), and new radio access technology base station (NR gNB), where the new radio access technology may be 5G, and if the anchor base station is an LTE eNB, the corresponding secondary base station For the NR gNB, correspondingly, if the anchor base station is an NR gNB, the corresponding secondary base station is an LTE eNB.
  • EPC LTE core network
  • NNC new Core network
  • eNB LTE base station
  • NR gNB new radio access technology base station
  • the protocol stack structure is as shown in FIG. 3, and supports 3C and 1A.
  • the split bearer is an LTE eNB as an anchor point, and the data is split from the Packet Data Convergence Protocol (PDCP) layer.
  • PDCP Packet Data Convergence Protocol
  • the Control Plane (CP) and the User Plane (UP) are both in the LTE eNB
  • the 1A (SCG bearer) is the control plane in the LTE eNB
  • the user plane is between the EPC and the gNB, as shown in Figure 1. Show.
  • the network architecture is shown in Figure 2, and the protocol stack structure is shown in Figure 4.
  • LTE-NR tight interworking means that the terminal accesses through LTE, the control plane remains in LTE, and then the User Plane (UP) passes LTE DC (dual-connectivity).
  • the method uses the LTE and the 5G new air interface at the same time, that is, the user plane anchor performs the packet granularity or the bearer granularity in the Packet Data Convergence Protocol (PDCP) layer.
  • PDCP Packet Data Convergence Protocol
  • the terminal can access through the 5G.
  • the control plane remains at 5G, similar to LTE DC, and the user plane is anchored in the 5G PDCP layer for offloading.
  • the reliability of the RRC message transmission in the LTE-NR multi-link scenario is improved.
  • the anchor base station is an LTE eNB
  • the anchor base station (MeNB) The generated RRC message can be transmitted to the terminal through the air interface of the LTE and the NR respectively.
  • the RRC message needs to be transmitted to the NR gNB through the interface between the LTE and the NR, and then sent to the terminal by the NR gNB.
  • the NR module of the terminal aggregates to the LTE module for processing.
  • the NR may have its own RRC entity, and may directly create and send an RRC message to the terminal. That is, after the LTE eNB increases the data transmission of the NR gNB for multi-stream aggregation, if the NR gNB is configured to be changed, the NR gNB directly generates an RRC configuration message, and sends the RRC configuration message to the terminal through the air interface of the NR.
  • the NR When the NR has its own RRC entity that can send the direct RRC message and support the RRC diversity technology, how to transmit the RRC message of the NR air interface, how the receiving end recognizes that there is no technical solution at present.
  • the embodiment of the present invention provides a multi-link communication method, device, and terminal, and solves how, in the scenario of the LTE-NR multi-link technology, when the NR has its own RRC entity and supports the RRC diversity, how does the secondary base station transmit the RRC message and the terminal How to identify the problem of RRC messages.
  • a first aspect of the present invention provides a multi-link communication method, including:
  • PDCP Packet Data Convergence Protocol
  • RLC link layer control
  • the newly added adaptation layer carrying indication information is used to indicate a target RRC entity that generates an RRC message
  • the target RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt different radio access technologies.
  • the indication information is carried by an idle field in the PDCP header, or is carried in a newly added field in a PDCP header.
  • the indication information includes first indication information and second indication information, where the first indication information is used to indicate that the target RRC entity is an RRC entity of the anchor base station, and the second indication information is And an RRC entity that is used to indicate that the target RRC entity is the secondary base station.
  • the first indication information is added by the anchor base station in a PDCP header of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station;
  • the second indication information is added by the secondary base station in a PDCP header of the secondary base station.
  • the first indication information and the second indication information are added by the secondary base station in an RLC header of the secondary base station.
  • the method further includes: a correspondence between the first indication information and an RRC entity of the anchor base station, and a correspondence between the second indication information and an RRC entity of the secondary base station by the secondary base station And sending, by the secondary base station, an air interface of the terminal to the terminal.
  • the first indication information is added by the anchor base station to a new adaptation layer of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station.
  • the second indication information is added by the secondary base station to a new adaptation layer of the secondary base station.
  • the corresponding relationship between the first indication information and the RRC entity of the anchor base station is sent by the anchor base station to the terminal by using an air interface with the terminal, the method further includes:
  • the secondary base station sends the correspondence between the second indication information and the RRC entity of the secondary base station to the terminal by using the air interface of the secondary base station and the terminal.
  • the method further includes: the secondary base station transmitting uplink grant UL grant information to the anchor base station by using an interface between the anchor base station and the secondary base station, so that the anchor base station will use the anchor
  • the RRC message generated by the RRC entity of the base station is sent to the terminal, and the anchor base station instructs the terminal to perform RRC connection establishment to the secondary base station.
  • the method further includes: the random access response message sent by the secondary base station to the terminal carries an uplink grant UL grant information, and indicates that the terminal performs an RRC connection establishment to the secondary base station.
  • the secondary base station has the capability of transmitting an RRC message generated by an RRC entity of the anchor base station and the capability of directly transmitting an RRC message generated by the RRC entity of the secondary base station.
  • a second aspect of the present invention provides a multi-link communication method, including:
  • the secondary eNB sends the first RRC message and the second RRC message to the terminal by using the air interface of the secondary base station and the terminal, where the first RRC message is encapsulated by the secondary base station in an RRC container.
  • the terminal parses the first RRC message from the RRC container, determining that the first RRC message is generated by an RRC entity of the anchor base station;
  • the anchor base station and the secondary base station adopt different wireless access technologies.
  • a third aspect of the present invention provides a multi-link communication method, including:
  • the secondary eNB sends the first RRC message and the second RRC message to the terminal by using two different logical channels of the secondary base station and the air interface of the terminal, so that the terminal generates RRC according to different logical channels.
  • the target RRC entity of the message
  • the target RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt different radio access technologies.
  • the method further includes: the secondary base station establishing two different SRBs corresponding to the two different logical channels;
  • the secondary base station sends the configuration information of the two different SRBs and the corresponding relationship of the RRC entity corresponding to the RRC message to the terminal.
  • the two different SRBs include a first SRB and a second SRB, where the first SRB is used to transmit the first RRC message, and the second SRB is used to transmit the second RRC News,
  • the sending, by the secondary base station, the configuration information of the two different SRBs and the corresponding relationship of the RRC entity that generates the RRC message to the terminal specifically includes:
  • the secondary base station sends the corresponding relationship between the configuration information of the second SRB and the RRC entity of the secondary base station to the terminal by using the air interface of the secondary base station and the terminal.
  • a fourth aspect of the present invention provides a multi-link communication method, including:
  • the terminal receives the RRC message sent by the secondary base station by using the secondary base station and the air interface of the terminal, where the RRC message includes a first RRC message generated by an RRC entity of the anchor base station and an RRC entity of the secondary base station generates a second RRC message. ;
  • the indication information is obtained from the PDCP header or the RLC header or the newly added adaptation layer, where the indication information is used to indicate the target RRC entity that generates the RRC message;
  • the terminal After determining, by the terminal, the target RRC entity that generates the RRC message, the terminal sends the received RRC message to the corresponding RRC module for processing;
  • the target RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt different radio access technologies.
  • the indication information is carried by an idle field in the PDCP header, or is carried in a newly added field in a PDCP header.
  • the indication information includes first indication information and second indication information, where the first indication information is used to indicate that the target RRC entity is an RRC entity of the anchor base station, and the second indication information is And an RRC entity that is used to indicate that the target RRC entity is the secondary base station.
  • the first indication information is added by the anchor base station in a PDCP header of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station;
  • the second indication information is added by the secondary base station in a PDCP header of the secondary base station.
  • the first indication information and the second indication information are added by the secondary base station in an RLC header of the secondary base station.
  • the method further includes: the terminal receiving, by the secondary base station and the air interface of the terminal, a correspondence between the first indication information sent by the secondary base station and an RRC entity of the anchor base station, and Corresponding relationship between the second indication information and the RRC entity of the secondary base station.
  • the first indication information is added by the anchor base station to a new adaptation layer of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station. And then sent by the secondary base station to the terminal through an air interface with the terminal; the second indication information is added by the secondary base station to a new adaptation layer of the secondary base station, and then The secondary base station sends the terminal to the terminal through an air interface with the terminal.
  • the corresponding relationship between the first indication information and the RRC entity of the anchor base station is sent by the anchor base station to the terminal by using an air interface with the terminal, the method further includes:
  • the terminal receives, by the secondary base station and the air interface of the terminal, a correspondence between the second indication information sent by the secondary base station and an RRC entity of the secondary base station.
  • the secondary base station has the capability of transmitting an RRC message generated by an RRC entity of the anchor base station and the capability of directly transmitting an RRC message generated by the RRC entity of the secondary base station.
  • a fifth aspect of the present invention provides a multi-link communication method, including:
  • the terminal receives the RRC message sent by the secondary base station by using the secondary base station and the air interface of the terminal, where the RRC message includes a first RRC message generated by an RRC entity of the anchor base station and an RRC entity of the secondary base station generates a second RRC message. ;
  • the terminal parses the RRC message from the RRC container RRC container, the terminal determines that the RRC message parsed in the RRC container is the first RRC message generated by the RRC entity of the anchor base station;
  • the anchor base station and the secondary base station adopt different wireless access technologies.
  • a sixth aspect of the present invention provides a multi-link communication method, including:
  • the secondary base station Receiving, by the secondary base station, the RRC message sent by the secondary base station by using a different logical channel of the secondary base station and the air interface of the terminal, where the RRC message includes a first RRC message generated by an RRC entity of the anchor base station and an RRC entity generated by the secondary base station a second RRC message;
  • the target RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt different radio access technologies.
  • the method further includes: the terminal receiving configuration information of two different SRBs, where configuration information of two different SRBs corresponds to the two different logical channels, and includes configuration information of the SRB and Corresponding to the correspondence of the RRC entity that generates the RRC message.
  • the two different SRBs include a first SRB and a second SRB, where the first SRB is used to transmit the first RRC message, and the second SRB is used to transmit the second RRC News,
  • the corresponding relationship between the configuration information of the first SRB and the RRC entity of the anchor base station is sent by the secondary base station to the anchor base station by using an interface between the anchor base station and the secondary base station, where the method further includes :
  • the terminal receives a correspondence between the configuration information of the second SRB and the RRC entity of the secondary base station that is sent by the secondary base station by using the secondary base station and the air interface of the terminal.
  • a seventh aspect of the present invention provides a multi-link secondary base station, including:
  • a receiver configured to receive a first RRC message generated by an RRC entity of the anchor base station
  • An RRC entity configured to generate a second RRC message
  • a transmitter configured to send the first RRC message and the second RRC message to the terminal by using an air interface of the secondary base station and the terminal, where the PDCP header or the RLC header or the newly added adaptation layer carries the indication Information, used to indicate a target RRC entity that generates an RRC message;
  • the target RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt different radio access technologies.
  • the indication information is carried by an idle field in the PDCP header, or is carried in a newly added field in a PDCP header.
  • the indication information includes first indication information and second indication information, where the first indication information is used to indicate that the target RRC entity is an RRC entity of the anchor base station, and the second indication information is And an RRC entity that is used to indicate that the target RRC entity is the secondary base station.
  • the first indication information is added by the anchor base station in a PDCP header of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station;
  • the secondary base station further includes: a processor, configured to add the second indication information to a PDCP header of the secondary base station.
  • the secondary base station further includes: a processor, configured to add the first indication information and the second indication information to an RLC header of the secondary base station.
  • the transmitter is further configured to: pass the correspondence between the first indication information and an RRC entity of the anchor base station, and the correspondence between the second indication information and an RRC entity of the secondary base station by using the The secondary base station and the air interface of the terminal are sent to the terminal.
  • the first indication information is added by the anchor base station to a new adaptation layer of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station.
  • the secondary base station further includes: a processor, configured to add the second indication information to a new adaptation layer of the secondary base station.
  • the correspondence between the first indication information and the RRC entity of the anchor base station is sent by the anchor base station to the terminal by using an air interface with the terminal, and the transmitter is further configured to use the second Corresponding relationship between the indication information and the RRC entity of the secondary base station is sent to the terminal by the air interface of the secondary base station and the terminal.
  • the transmitter is further configured to send uplink grant UL grant information to the anchor base station by using an interface between the anchor base station and the secondary base station, so that the anchor base station sends the anchor base station RRC
  • the RRC message generated by the entity is sent to the terminal, and the anchor base station instructs the terminal to perform RRC connection establishment to the secondary base station.
  • the sender is further configured to: carry the uplink grant UL grant information in the random access response message sent by the terminal, and instruct the terminal to perform RRC connection establishment to the secondary base station.
  • the secondary base station has the capability of transmitting an RRC message generated by an RRC entity of the anchor base station and the capability of directly transmitting an RRC message generated by the RRC entity of the secondary base station.
  • An eighth aspect of the present invention provides a multi-link secondary base station, including:
  • a receiver configured to receive a first RRC message generated by an RRC entity of the anchor base station
  • An RRC entity configured to generate a second RRC message
  • a transmitter configured to send the first RRC message and the second RRC message to the terminal by using an air interface of the secondary base station and the terminal,
  • a processor configured to encapsulate the first RRC message in an RRC container RRC container, to determine, when the terminal parses the first RRC message from the RRC container, determining the first RRC message The RRC entity of the anchor base station is generated;
  • the anchor base station and the secondary base station adopt different wireless access technologies.
  • a ninth aspect of the present invention provides a multi-link secondary base station, including:
  • a receiver configured to receive a first RRC message generated by an RRC entity of the anchor base station
  • An RRC entity configured to generate a second RRC message
  • a transmitter configured to transmit the first RRC message and the second RRC message to the terminal by using two different logical channels of the secondary base station and the air interface of the terminal, so that the terminal is generated according to different logical channels.
  • the target RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt different radio access technologies.
  • the anchor base station further includes: a processor, configured to establish two different SRBs corresponding to the two different logical channels;
  • the transmitter is further configured to send, to the terminal, the configuration information of the two different SRBs and the corresponding relationship of the RRC entity that generates the RRC message.
  • the two different SRBs include a first SRB and a second SRB, where the first SRB is used to transmit the first RRC message, and the second SRB is used to transmit the second RRC News,
  • the transmitter is further configured to send a correspondence between the configuration information of the first SRB and an RRC entity of the anchor base station to the anchor base station by using an interface between the anchor base station and the secondary base station, where Sending, by the anchor base station, the air interface to the terminal through the air interface of the terminal;
  • the transmitter is further configured to send, by the secondary base station and the air interface of the secondary base station, the corresponding relationship between the configuration information of the second SRB and the RRC entity of the secondary base station to the terminal.
  • a tenth aspect of the present invention provides a terminal, including:
  • a receiver configured to receive, by the secondary base station, an RRC message sent by the secondary base station by using an air interface of the terminal, where the RRC message includes a first RRC message generated by an RRC entity of the anchor base station and an RRC entity generated by the secondary base station a second RRC message;
  • the processor when parsing the RRC message, obtains indication information from a PDCP header or an RLC header or a new adaptation layer, where the indication information is used to indicate a target RRC entity that generates an RRC message, and is determined according to the indication information. After the target RRC entity that generates the RRC message is sent, the received RRC message is sent to the corresponding RRC module for processing;
  • the target RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt different radio access technologies.
  • the indication information is carried by an idle field in the PDCP header, or is carried in a newly added field in a PDCP header.
  • the indication information includes first indication information and second indication information, where the first indication information is used to indicate that the target RRC entity is an RRC entity of the anchor base station, and the second indication information is And an RRC entity that is used to indicate that the target RRC entity is the secondary base station.
  • the first indication information is added by the anchor base station in a PDCP header of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station;
  • the second indication information is added by the secondary base station in a PDCP header of the secondary base station.
  • the first indication information and the second indication information are added by the secondary base station in an RLC header of the secondary base station.
  • the receiver is further configured to receive, by using the secondary base station and the air interface of the terminal, a correspondence between the first indication information sent by the secondary base station and an RRC entity of the anchor base station, and the Corresponding relationship between the second indication information and the RRC entity of the secondary base station.
  • the first indication information is added by the anchor base station to a new adaptation layer of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station.
  • the second indication information is added by the secondary base station to a new adaptation layer of the secondary base station, and the receiver is further configured to use the secondary base station and the air interface of the terminal from the secondary base station by using the secondary base station. Receiving the first indication information and the second indication information;
  • the receiver is further configured to receive, by using the secondary base station and the air interface of the terminal, a correspondence between the second indication information sent by the secondary base station and an RRC entity of the secondary base station.
  • the secondary base station has the capability of transmitting an RRC message generated by an RRC entity of the anchor base station and the capability of directly transmitting an RRC message generated by the RRC entity of the secondary base station.
  • An eleventh aspect of the present invention provides a terminal, including:
  • a receiver configured to receive, by the secondary base station, an RRC message sent by the secondary base station by using an air interface of the terminal, where the RRC message includes a first RRC message generated by an RRC entity of the anchor base station and an RRC entity generated by the secondary base station a second RRC message;
  • the processor is configured to parse the RRC message from the RRC container RRC container when parsing the RRC message, and determine that the RRC message parsed in the RRC container is the first RRC message generated by the RRC entity of the anchor base station. ;
  • the anchor base station and the secondary base station adopt different wireless access technologies.
  • a twelfth aspect of the present invention provides a terminal, including:
  • a receiver configured to receive, by using a different logical channel of the secondary base station and the air interface of the terminal, an RRC message sent by the secondary base station, where the RRC message includes a first RRC message generated by an RRC entity of the anchor base station, and the secondary base station The RRC entity generates a second RRC message;
  • a processor configured to distinguish, according to different logical channels, a target RRC entity that generates an RRC message
  • the target RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt different radio access technologies.
  • the receiver is further configured to receive configuration information of two different SRBs, where configuration information of two different SRBs corresponds to the two different logical channels, and includes configuration information and corresponding information of the SRB. Corresponding relationship of the RRC entity that generates the RRC message.
  • the two different SRBs include a first SRB and a second SRB, where the first SRB is used to transmit the first RRC message, and the second SRB is used to transmit the second RRC News,
  • the corresponding relationship between the configuration information of the first SRB and the RRC entity of the anchor base station is sent by the secondary base station to the anchor base station through an interface between the anchor base station and the secondary base station, the receiver, And a function for receiving, by the anchor base station, the configuration information of the first SRB sent by the air interface with the terminal, and the RRC entity of the anchor base station;
  • the receiver is further configured to receive, by the secondary base station, a correspondence between configuration information of the second SRB sent by the secondary base station and an air interface of the terminal, and an RRC entity of the secondary base station.
  • the multi-link communication method, device and terminal described above solve the problem of how the secondary base station transmits the RRC message and how the terminal recognizes the RRC message in the case of the LTE-NR multi-link technology, when the NR has its own RRC entity and supports the RRC diversity.
  • the problem when the NR has its own RRC entity and supports the RRC diversity.
  • FIG. 1 is a schematic diagram of a network architecture of an LTE-NR multi-link technology in the prior art
  • FIG. 2 is a schematic diagram of another LTE-NR multi-link technology network architecture in the prior art
  • FIG. 3 is a schematic structural diagram of a protocol stack in which an LTE eNB is an anchor base station in the prior art
  • FIG. 4 is a schematic structural diagram of a protocol stack of an NR gNB as an anchor base station in the prior art
  • FIG. 5 is a schematic flowchart diagram of a multi-link communication method according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart diagram of another multi-link communication method according to another embodiment of the present invention.
  • FIG. 7 is a schematic flowchart diagram of another multi-link communication method according to another embodiment of the present invention.
  • FIG. 8 is a schematic flowchart diagram of another multi-link communication method according to another embodiment of the present invention.
  • FIG. 9 is a schematic flowchart diagram of another multi-link communication method according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a secondary base station according to another embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of another secondary base station according to another embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of another secondary base station according to another embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a terminal according to another embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of another terminal according to another embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of another terminal according to another embodiment of the present invention.
  • 16 is a schematic diagram of a multi-link network architecture to which an embodiment of the present invention is applied;
  • FIG. 17 is a schematic flowchart diagram of another multi-link communication method according to another embodiment of the present invention.
  • the multiple connectivity communication method provided by the embodiment of the present invention means that the terminal can simultaneously access the first network and the new radio access technical (New RAT or NR) network, and the access of the first network.
  • the network device and the access network device of the new radio access network can simultaneously provide services for the terminal.
  • the first network may be an LTE network, a Wireless Fidelity (WIFI) network, a Global System of Mobile communication (GSM) network, or a Code Division Multiple Access (CDMA).
  • WIFI Wireless Fidelity
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • Currently existing networks such as network and Wideband Code Division Multiple Access (WCDMA) networks.
  • the new wireless access network can provide higher transmission rate than the LTE network
  • the new wireless access network is also called 5G network, the next generation network, etc.
  • the access network device of the new wireless access network is also called NR Node ( Node) or NR BS (Base Station), which is not limited herein.
  • the multi-link in the embodiment of the present invention specifically refers to that the terminal accesses the core network of the first network through the access network device of the first network, and the Control Plane (CP) data is transmitted on the first network, and the user plane (User Plane) , referred to as UP) data is transmitted simultaneously in the air interface of the first network and the air interface of the new wireless access network.
  • the user plane anchor performs the packet granularity or the bearer granularity of the packet in the Packet Data Convergence Protocol (PDCP) layer of the new radio access network.
  • PDCP Packet Data Convergence Protocol
  • FIG. 5 is a schematic flowchart of a multi-link communication method according to another embodiment of the present invention.
  • an LTE eNB is an anchor base station or a primary base station (MeNB, master eNB)
  • the NR gNB is supplemented.
  • a base station (SgNB, Secondary gNB) if the NR gNB is an anchor base station or a primary base station (MgNB, Master gNB), the LTE eNB is a secondary base station (SeNB, Secondary eNB), mainly as follows.
  • Step 501 The secondary base station receives the first RRC message generated by the RRC entity of the anchor base station and the RRC entity of the secondary base station generates a second RRC message.
  • Step 502 The secondary eNB sends the first RRC message and the second RRC message to the terminal by using the air interface of the secondary base station and the terminal, where the PDCP header or the RLC header or the newly added adaptation layer Carrying indication information, used to indicate a target RRC entity that generates an RRC message;
  • the target RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt different radio access technologies.
  • the indication information is carried by an idle field in the PDCP header, or is carried in a newly added field in a PDCP header.
  • the indication information includes first indication information and second indication information, where the first indication information is used to indicate that the target RRC entity is an RRC entity of the anchor base station, and the second indication information is And an RRC entity that is used to indicate that the target RRC entity is the secondary base station.
  • the first indication information is added by the anchor base station in a PDCP header of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station;
  • the second indication information is added by the secondary base station in a PDCP header of the secondary base station.
  • the first indication information and the second indication information are added by the secondary base station in an RLC header of the secondary base station.
  • the method further includes: a correspondence between the first indication information and an RRC entity of the anchor base station, and a correspondence between the second indication information and an RRC entity of the secondary base station by the secondary base station And sending, by the secondary base station, an air interface of the terminal to the terminal.
  • the first indication information is added by the anchor base station to a new adaptation layer of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station.
  • the second indication information is added by the secondary base station to a new adaptation layer of the secondary base station.
  • the first indication information and the second indication information are added by the secondary base station to a new adaptation layer of the secondary base station.
  • the corresponding relationship between the first indication information and the RRC entity of the anchor base station is sent by the anchor base station to the terminal by using an air interface with the terminal
  • the method further includes: the secondary base station
  • the correspondence between the second indication information and the RRC entity of the secondary base station is sent to the terminal by the air interface of the secondary base station and the terminal.
  • the method further includes: the secondary base station transmitting uplink grant UL grant information to the anchor base station by using an interface between the anchor base station and the secondary base station, so that the anchor base station will use the anchor
  • the RRC message generated by the RRC entity of the base station is sent to the terminal, and the anchor base station instructs the terminal to perform RRC connection establishment to the secondary base station.
  • the method further includes: the random access response message sent by the secondary base station to the terminal carries an uplink grant UL grant information, and indicates that the terminal performs an RRC connection establishment to the secondary base station.
  • the secondary base station has the capability of transmitting an RRC message generated by an RRC entity of the anchor base station and the capability of directly transmitting an RRC message generated by the RRC entity of the secondary base station.
  • FIG. 6 is a schematic flowchart of another multi-link communication method according to another embodiment of the present invention.
  • the NR gNB is A secondary base station (SgNB, Secondary gNB)
  • the NR gNB is an anchor base station or a primary base station (MgNB, Master gNB)
  • the LTE eNB is a secondary base station (SeNB, Secondary eNB), mainly as follows.
  • Step 601 The secondary eNB receives the first RRC message generated by the RRC entity of the anchor base station and the RRC entity of the secondary base station generates a second RRC message.
  • Step 602 The secondary eNB sends the first RRC message and the second RRC message to the terminal by using the air interface of the secondary base station and the terminal, where the first RRC message is encapsulated by the secondary base station.
  • RRC container RRC container, to determine that the first RRC message is generated by an RRC entity of the anchor base station when the terminal parses the first RRC message from the RRC container; wherein the anchor The base station and the secondary base station adopt different wireless access technologies.
  • FIG. 7 is a schematic flowchart of another multi-link communication method according to another embodiment of the present invention.
  • the NR gNB is A secondary base station (SgNB, Secondary gNB)
  • the NR gNB is an anchor base station or a primary base station (MgNB, Master gNB)
  • the LTE eNB is a secondary base station (SeNB, Secondary eNB), mainly as follows.
  • Step 701 The secondary eNB receives the first RRC message generated by the RRC entity of the anchor base station, and the RRC entity of the secondary base station generates a second RRC message.
  • Step 702 The secondary eNB sends the first RRC message and the second RRC message to the terminal by using two different logical channels of the secondary base station and the air interface of the terminal, so that the terminal is configured according to different logical channels. And distinguishing the target RRC entity that generates the RRC message, where the target RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt different radio access technologies.
  • the method further includes: the secondary base station establishes two different SRBs (signal bearers, which are mainly used for carrying signaling messages) corresponding to the two different logical channels.
  • SRBs signal bearers, which are mainly used for carrying signaling messages
  • the secondary base station sends the configuration information of the two different SRBs and the corresponding relationship of the RRC entity corresponding to the RRC message to the terminal.
  • the two different SRBs include a first SRB and a second SRB, where the first SRB is used to transmit the first RRC message, and the second SRB is used to transmit the second RRC News,
  • the sending, by the secondary base station, the configuration information of the two different SRBs and the corresponding relationship of the RRC entity that generates the RRC message to the terminal specifically includes:
  • the secondary base station sends the corresponding relationship between the configuration information of the second SRB and the RRC entity of the secondary base station to the terminal by using the air interface of the secondary base station and the terminal.
  • FIG. 8 is a schematic flowchart of another multi-link communication method according to another embodiment of the present invention. This embodiment is described from the terminal side.
  • the LTE eNB is an anchor base station or a primary base station (MeNB, master eNB)
  • the NR gNB is a secondary base station (SgNB, Secondary gNB).
  • the LTE eNB is a secondary base station (SeNB, Secondary eNB), and is mainly as follows.
  • Step 801 The terminal receives the RRC message sent by the secondary base station by using the secondary base station and the air interface of the terminal, where the RRC message includes a first RRC message generated by an RRC entity of the anchor base station and an RRC entity generated by the secondary base station. Two RRC messages.
  • Step 802 The terminal obtains indication information from a PDCP header or an RLC header or a newly added adaptation layer, where the indication information is used to indicate a target RRC entity that generates an RRC message.
  • Step 803 After determining, by the target information, the target RRC entity that generates the RRC message, the terminal sends the received RRC message to the corresponding RRC module for processing; where the target RRC entity is the anchor base station.
  • the RRC entity or the RRC entity of the secondary base station, the anchor base station and the secondary base station adopt different wireless access technologies.
  • the indication information is carried by an idle field in the PDCP header, or is carried in a newly added field in a PDCP header.
  • the indication information includes first indication information and second indication information, where the first indication information is used to indicate that the target RRC entity is an RRC entity of the anchor base station, and the second indication information is And an RRC entity that is used to indicate that the target RRC entity is the secondary base station.
  • the first indication information is added by the anchor base station in a PDCP header of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station;
  • the second indication information is added by the secondary base station in a PDCP header of the secondary base station.
  • the first indication information and the second indication information are added by the secondary base station in an RLC header of the secondary base station.
  • the method further includes: the terminal receiving, by the secondary base station and the air interface of the terminal, a correspondence between the first indication information sent by the secondary base station and an RRC entity of the anchor base station, and Corresponding relationship between the second indication information and the RRC entity of the secondary base station.
  • the first indication information is added by the anchor base station to a new adaptation layer of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station. And then sent by the secondary base station to the terminal through an air interface with the terminal; the second indication information is added by the secondary base station to a new adaptation layer of the secondary base station, and then The secondary base station sends the terminal to the terminal through an air interface with the terminal.
  • the terminal receives the first indication information and the second indication information by using the secondary base station and the air interface of the terminal.
  • the corresponding relationship between the first indication information and the RRC entity of the anchor base station is sent by the anchor base station to the terminal by using an air interface with the terminal, the method further includes: the terminal The secondary base station and the air interface of the terminal receive the correspondence between the second indication information sent by the secondary base station and the RRC entity of the secondary base station.
  • the secondary base station has the capability of transmitting an RRC message generated by an RRC entity of the anchor base station and the capability of directly transmitting an RRC message generated by the RRC entity of the secondary base station.
  • FIG. 9 is a schematic flowchart of another multi-link communication method according to another embodiment of the present invention. This embodiment is described from the terminal side.
  • the LTE eNB is an anchor base station or a primary base station (MeNB, master eNB)
  • the NR gNB is a secondary base station (SgNB, Secondary gNB).
  • the LTE eNB is a secondary base station (SeNB, Secondary eNB), and is mainly as follows.
  • Step 901 The terminal receives the RRC message sent by the secondary base station by using the secondary base station and the air interface of the terminal, where the RRC message includes a first RRC message generated by an RRC entity of the anchor base station and an RRC entity generated by the secondary base station. Two RRC messages.
  • Step 902 When the terminal parses the RRC message from the RRC container RRC container, the terminal determines that the RRC message parsed in the RRC container is the first RRC generated by the RRC entity of the anchor base station. a message; wherein the anchor base station and the secondary base station employ different radio access technologies.
  • a sixth aspect of the present invention provides a multi-link communication method, including:
  • the secondary base station Receiving, by the secondary base station, the RRC message sent by the secondary base station by using a different logical channel of the secondary base station and the air interface of the terminal, where the RRC message includes a first RRC message generated by an RRC entity of the anchor base station and an RRC entity generated by the secondary base station a second RRC message;
  • the target RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt different radio access technologies.
  • the method further includes: the terminal receiving configuration information of two different SRBs, where configuration information of two different SRBs corresponds to the two different logical channels, and includes configuration information of the SRB and Corresponding to the correspondence of the RRC entity that generates the RRC message.
  • the two different SRBs include a first SRB and a second SRB, where the first SRB is used to transmit the first RRC message, and the second SRB is used to transmit the second RRC News,
  • the corresponding relationship between the configuration information of the first SRB and the RRC entity of the anchor base station is sent by the secondary base station to the anchor base station by using an interface between the anchor base station and the secondary base station, where the method further includes :
  • the terminal receives a correspondence between the configuration information of the second SRB and the RRC entity of the secondary base station that is sent by the secondary base station by using the secondary base station and the air interface of the terminal.
  • FIG. 10 is a schematic structural diagram of a secondary base station according to another embodiment of the present invention.
  • the NR gNB is a secondary base station ( SgNB, Secondary gNB)
  • the NR gNB is an anchor base station or a primary base station (MgNB, Master gNB)
  • the LTE eNB is a secondary base station (SeNB, Secondary eNB)
  • the secondary base station includes: a receiver 1001, an RRC entity 1002, a transmitter 1003, and a processor 1004.
  • the receiver 1001 is configured to receive a first RRC message generated by an RRC entity of an anchor base station.
  • the RRC entity 1002 is configured to generate a second RRC message.
  • the transmitter 1003 is configured to send the first RRC message and the second RRC message to the terminal by using an air interface of the secondary base station and the terminal, where the PDCP header or the RLC header or the newly adapted
  • the layer carrying indication information is used to indicate a target RRC entity that generates an RRC message, where the target RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt Different wireless access technologies.
  • the indication information is carried by an idle field in the PDCP header, or is carried in a newly added field in a PDCP header.
  • the indication information includes first indication information and second indication information, where the first indication information is used to indicate that the target RRC entity is an RRC entity of the anchor base station, and the second indication information is And an RRC entity that is used to indicate that the target RRC entity is the secondary base station.
  • the first indication information is added by the anchor base station in a PDCP header of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station;
  • the secondary base station further includes: a processor 1004, configured to add the second indication information to a PDCP header of the secondary base station.
  • the secondary base station further includes: a processor 1004, configured to add the first indication information and the second indication information to an RLC header of the secondary base station.
  • the transmitter 1003 is further configured to: pass a correspondence between the first indication information and an RRC entity of the anchor base station, and a correspondence between the second indication information and an RRC entity of the secondary base station The secondary base station and the air interface of the terminal are sent to the terminal.
  • the first indication information is added by the anchor base station to a new adaptation layer of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station.
  • the secondary base station further includes: a processor 1004, configured to add the second indication information to a new adaptation layer of the secondary base station.
  • the correspondence between the first indication information and the RRC entity of the anchor base station is sent by the anchor base station to the terminal by using an air interface with the terminal, and the transmitter 1003 is further configured to:
  • the correspondence between the two indication information and the RRC entity of the secondary base station is sent to the terminal by the air interface of the secondary base station and the terminal.
  • the transmitter 1003 is further configured to send uplink grant UL grant information to the anchor base station by using an interface between the anchor base station and the secondary base station, so that the anchor base station sends the anchor base station
  • the RRC message generated by the RRC entity is sent to the terminal, and the anchor base station instructs the terminal to perform RRC connection establishment to the secondary base station.
  • the transmitter 1003 is further configured to: carry the uplink grant UL grant information in the random access response message sent by the terminal, and instruct the terminal to perform RRC connection establishment to the secondary base station.
  • the secondary base station has the capability of transmitting an RRC message generated by an RRC entity of the anchor base station and the capability of directly transmitting an RRC message generated by the RRC entity of the secondary base station.
  • FIG. 11 is a schematic structural diagram of a secondary base station according to another embodiment of the present invention.
  • the NR gNB is a secondary base station ( SgNB, Secondary gNB)
  • the NR gNB is an anchor base station or a primary base station (MgNB, Master gNB)
  • the LTE eNB is a secondary base station (SeNB, Secondary eNB)
  • the secondary base station includes: a receiver 1101, configured to receive a first RRC message generated by an RRC entity of an anchor base station; an RRC entity 1102, configured to generate a second RRC message; and a transmitter 1103, configured to: use the first RRC message
  • the message and the second RRC message are sent to the terminal by using the air interface of the secondary base station and the terminal;
  • the processor 1104 is configured to encapsulate the first RRC message in an RRC container RRC container, so that when the terminal When the first RRC message is parsed in the RRC container, determining that the first RRC message is generated by an RRC entity of the anchor base station; wherein the anchor base station and the secondary base station adopt different radio access technologies .
  • FIG. 12 is a schematic structural diagram of a secondary base station according to another embodiment of the present invention.
  • the NR gNB is a secondary base station ( SgNB, Secondary gNB)
  • the NR gNB is an anchor base station or a primary base station (MgNB, Master gNB)
  • the LTE eNB is a secondary base station (SeNB, Secondary eNB)
  • the secondary base station includes: a receiver 1201, configured to receive a first RRC message generated by an RRC entity of the anchor base station; an RRC entity 1202, configured to generate a second RRC message; and a transmitter 1203, configured to: use the first RRC message And transmitting, by the second RRC message, to the terminal by using two different logical channels of the secondary base station and the air interface of the terminal, so that the terminal distinguishes a target RRC entity that generates an RRC message according to different logical channels; wherein the target The RRC entity is an RRC entity of the anchor base station or an RRC entity of the secondary base station, and the anchor base station and the secondary base station adopt different wireless access technologies.
  • the anchor base station further includes: a processor 1204, configured to establish two different SRBs corresponding to the two different logical channels.
  • the transmitter 1203 is further configured to send the configuration information of the two different SRBs and the corresponding relationship of the RRC entity corresponding to the RRC message to the terminal.
  • the two different SRBs include a first SRB and a second SRB, where the first SRB is used to transmit the first RRC message, and the second SRB is used to transmit the second RRC a message
  • the transmitter 1203 configured to send, by using an interface between the anchor base station and the secondary base station, the configuration information of the first SRB and the RRC entity of the anchor base station to the anchor
  • the base station is sent by the anchor base station to the terminal through the air interface of the terminal;
  • the transmitter 1203 is further configured to: configure the correspondence between the configuration information of the second SRB and the RRC entity of the secondary base station And sending, by the secondary base station, an air interface of the terminal to the terminal.
  • FIG. 13 is a schematic structural diagram of a terminal according to another embodiment of the present invention.
  • an LTE eNB is an anchor base station or a primary base station (MeNB, master eNB)
  • the NR gNB is a secondary base station (SgNB).
  • the secondary eNB is a secondary base station (SeNB, Secondary eNB), and is mainly as follows.
  • the terminal includes: a receiver 1301, configured to receive, by using a secondary base station, an RRC message sent by the secondary base station by using an air interface of the terminal, where the RRC message includes a first RRC message generated by an RRC entity of an anchor base station, and the The RRC entity of the secondary base station generates a second RRC message, and the processor 1302 is configured to obtain indication information from the PDCP header or the RLC header or the newly added adaptation layer, where the indication information is used to indicate that the RRC is generated.
  • a target RRC entity of the message after determining the target RRC entity that generates the RRC message according to the indication information, handing over the received RRC message to the corresponding RRC module for processing; wherein the target RRC entity is the anchor base station
  • the RRC entity or the RRC entity of the secondary base station, the anchor base station and the secondary base station adopt different wireless access technologies.
  • the indication information is carried by an idle field in the PDCP header, or is carried in a newly added field in a PDCP header.
  • the indication information includes first indication information and second indication information, where the first indication information is used to indicate that the target RRC entity is an RRC entity of the anchor base station, and the second indication information is And an RRC entity that is used to indicate that the target RRC entity is the secondary base station.
  • the first indication information is added by the anchor base station in a PDCP header of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station;
  • the second indication information is added by the secondary base station in a PDCP header of the secondary base station.
  • the first indication information and the second indication information are added by the secondary base station in an RLC header of the secondary base station.
  • the receiver 1301 is further configured to receive, by using the secondary base station and the air interface of the terminal, a correspondence between the first indication information sent by the secondary base station and an RRC entity of the anchor base station, and Corresponding relationship between the second indication information and the RRC entity of the secondary base station.
  • the first indication information is added by the anchor base station to a new adaptation layer of the anchor base station, and is sent to the secondary base station by using an interface between the anchor base station and the secondary base station.
  • the second indication information is added by the secondary base station to the newly added adaptation layer of the secondary base station, and the receiver 1301 is further configured to use the secondary base station and the air interface of the terminal from the auxiliary Receiving, by the base station, the first indication information and the second indication information;
  • the receiver 1301 is further configured to receive, by using the secondary base station and the air interface of the terminal, a correspondence between the second indication information sent by the secondary base station and an RRC entity of the secondary base station.
  • the secondary base station has the capability of transmitting an RRC message generated by an RRC entity of the anchor base station and the capability of directly transmitting an RRC message generated by the RRC entity of the secondary base station.
  • FIG. 14 is a schematic structural diagram of a terminal according to another embodiment of the present invention.
  • an LTE eNB is an anchor base station or a primary base station (MeNB, master eNB)
  • the NR gNB is a secondary base station (SgNB).
  • the secondary eNB is a secondary base station (SeNB, Secondary eNB), and is mainly as follows.
  • the terminal includes a receiver 1401, configured to receive an RRC message sent by the secondary base station by using a secondary base station and an air interface of the terminal, where the RRC message includes a first RRC message generated by an RRC entity of an anchor base station, and the auxiliary The RRC entity of the base station generates a second RRC message.
  • the processor 1402 is configured to parse the RRC message from the RRC container RRC container when parsing the RRC message, and determine that the RRC message parsed in the RRC container is the anchor base station.
  • FIG. 15 is a schematic structural diagram of another terminal according to another embodiment of the present invention.
  • the NR gNB is a secondary base station ( SgNB, Secondary gNB)
  • the NR gNB is an anchor base station or a primary base station (MgNB, Master gNB)
  • the LTE eNB is a secondary base station (SeNB, Secondary eNB)
  • the terminal includes a receiver 1501, configured to receive, by using a different logical channel of the secondary base station and the air interface of the terminal, an RRC message sent by the secondary base station, where the RRC message includes a first RRC message generated by an RRC entity of the anchor base station. And the RRC entity of the secondary base station generates a second RRC message, where the processor 1502 is configured to differentiate the target RRC entity that generates the RRC message according to different logical channels, where the target RRC entity is the RRC entity or the anchor base station.
  • the RRC entity of the secondary base station, the anchor base station and the secondary base station adopt different wireless access technologies.
  • the receiver 1501 is further configured to receive configuration information of two different SRBs, where configuration information of two different SRBs corresponds to the two different logical channels, and includes configuration information of the SRB and Corresponding to the correspondence of the RRC entity that generates the RRC message.
  • the two different SRBs include a first SRB and a second SRB, where the first SRB is used to transmit the first RRC message, and the second SRB is used to transmit the second RRC News,
  • the corresponding relationship between the configuration information of the first SRB and the RRC entity of the anchor base station is sent by the secondary base station to the anchor base station through an interface between the anchor base station and the secondary base station, where the receiver 1501 And configured to receive, by the anchor base station, a correspondence between configuration information of the first SRB and an RRC entity of the anchor base station, where the anchor station sends an air interface with the terminal;
  • the receiver 1501 is further configured to receive, by the secondary base station, a correspondence between configuration information of the second SRB sent by the secondary base station and an air interface of the terminal, and an RRC entity of the secondary base station.
  • the first network is an LTE network
  • the new radio access network is a 5G network.
  • FIG. 16 is a schematic diagram of a multi-link network architecture applicable to the embodiment of the present invention, as shown in FIG.
  • the multi-link network architecture includes an access network device of an LTE network, an access network device of a new radio access network, and a core network device of the LTE network, where the access network device of the LTE network includes an LTE eNB, and the new radio access
  • the access network device of the network includes the NR gNB
  • the core network device of the LTE includes: a Mobility Management Entity (MME) or a Serving GateWay (S-GW), and a new radio access network access network.
  • MME Mobility Management Entity
  • S-GW Serving GateWay
  • the function of the device is similar to that of the access network device of the LTE network, and can provide functions such as security authentication, charging, and mobility management for the terminal, and the access network device of the LTE network and the access network device of the new wireless access network.
  • the interface between the two is a new interface, and the new interface may be referred to as an X5 interface or other name, which is not limited herein.
  • the terminal can also establish more connections through the access network device of the LTE network.
  • the LTE eNB is an anchor base station or a primary base station (MeNB, master eNB), and the NR gNB is a secondary base station (SgNB, Secondary gNB) performing data transmission of multiple links with an LTE eNB as an anchor point.
  • MeNB primary base station
  • SgNB Secondary gNB
  • the multi-link data transmission may be performed by the PDCP protocol layer of the LTE eNB or the RLC protocol layer of the LTE eNB. This embodiment is not limited.
  • FIG. 17 is a schematic flowchart of a multi-link communication method according to another embodiment of the present invention.
  • an LTE eNB is an anchor base station or a primary base station
  • an NR gNB is a secondary base station, which is mainly as follows.
  • step 1701 the LTE eNB initiates an increase request procedure to the NR gNB, triggering a multi-link process.
  • the multi-link process may be initiated by the LTE eNB as the MeNB to the NR gNB, ie, the secondary base station (SgNB), to trigger the LTE-NR tight interworking.
  • the LTE eNB as the MeNB
  • the NR gNB ie, the secondary base station (SgNB)
  • SgNB secondary base station
  • the request procedure is similar to the LTE DC.
  • the LTE eNB acts as an anchor base station to initiate a SgNB addition request request to the secondary base station NR gNB, and the SgNB addition request is used to request the NR gNB to act as a secondary base station to create a corresponding link resource, the increase request message.
  • the method includes at least one of the following: data radio bearer related information (such as ERAB ID), security related information (such as a key key), and signaling bearer related information (for example, a signalling radio bearers identifier (SRB ID) And corresponding tunnel end point (TEID) and quality of service (Qos, Quality of Service) and other information.
  • data radio bearer related information such as ERAB ID
  • security related information such as a key key
  • signaling bearer related information for example, a signalling radio bearers identifier (SRB ID) And corresponding tunnel end point (TEID) and quality of service (Qos, Quality of Service) and other information.
  • the NR gNB After receiving the request message, the NR gNB returns a response message to the MeNB, where the response message includes the received data radio bearer related information, the signaling bearer related information, and the corresponding tunnel end point, etc., and reserves corresponding resources for the terminal, and creates
  • the corresponding SRB is sent to the terminal through the RRC message of the MeNB, and the configuration information includes at least one of the following: the configuration of the signaling radio bearer (such as the SRB ID), the configuration of the bearer (DRB ID, etc.), and the RLC. Configuration and PDCP configuration, etc.
  • Step 1702 The LTE eNB triggers performing an RRC diversity function to create RRC configuration information.
  • the RRC diversity function refers to radio resource control (RRC) diversity, that is, the RRC message generated by the LTE eNB can be transmitted to the terminal through the air interface of the LTE and the air interface of the NR, that is, the RRC message generated by the LTE eNB passes.
  • RRC radio resource control
  • the air interface of LTE is transmitted to the terminal, and can also be transmitted to the NR gNB through the interface between the LTE eNB and the NR gNB, and then transmitted to the terminal by the NR gNB.
  • the LTE eNB triggers the RRC diversity function and the RRC configuration information created by the LTE eNB.
  • the LTE eNB sends the RRC configuration information to the terminal through the LTE eNB and the NR gNB, respectively.
  • the LTE eNB sends the RRC configuration information to the terminal through the LTE eNB and the NR gNB, respectively.
  • the RRC diversity configuration may be included in the SgNB addition process, by splitting the SRB (split SRB), for example, signaling bearer related information (SRB ID), and adding information about the SRB to be split in the increase request message, and the NR gNB is received. Reserve resources after the request message and create the corresponding SRB.
  • the NR gNB sends the configuration information of the SRB to the terminal through the RRC message of the LTE eNB in the response message.
  • step 1706 the NR gNB triggers the direct RRC message function.
  • the direct RRC message function is used to directly generate an RRC message to the terminal through the NR air interface when the NR gNB is used as the secondary base station.
  • the direct RRC message function of the NR gNB is triggered by the following two methods.
  • Manner 1 The LTE eNB determines whether the NR gNB has a direct RRC function.
  • the NR gNB sends the uplink grant (UL grant) information to the LTE eNB through the interface between the NR gNB and the LTE eNB, and then the LTE eNB generates the RRC message generated by the LTE eNB through the LTE air interface.
  • the terminal sends to the terminal, and instructing the terminal to perform RRC connection establishment to the NR gNB, the terminal initiates an RRC connection establishment request to the NR gNB according to the indication, and then the terminal establishes an RRC connection with the NR gNB.
  • the NR gNB sends the UL grant information to the LTE eNB by adding an update request ack message, which may be other messages, which is not limited in this embodiment.
  • the UL grant information may also be that the LTE eNB requests the NR gNB in the addition request message, which is not limited in this embodiment.
  • Method 2 NR gNB determines whether it has direct RRC function
  • the NR gNB determines that the NR gNB has the direct RRC function, the NR gNB carries the UL grant information in the random access message 2 sent by the terminal, indicating that the terminal performs RRC connection establishment to the NR gNB, and the NR gNB does not need to pass the UL grant through the LTE eNB.
  • the information is sent to the terminal, and the terminal initiates an RRC connection setup request to the NR gNB according to the indication, and then the terminal establishes an RRC connection with the NR gNB.
  • the RRC connection establishment mode of the terminal and the NR gNB is similar to the RRC connection establishment mode of the existing LTE, and the description is not repeated herein.
  • Step 1707 the NR gNB configures SRB signaling of the direct RRC message.
  • the SRB configuration includes PDCP configuration (PDCP config), RLC configuration (RLC config (optional)), etc., SRB configuration.
  • the transmission method can be as follows.
  • Manner 2 The NR gNB transmits an RRC message to the terminal through the default bearer (SRB0), where the SRB0 between the terminal and the NR gNB is established at the time of random access.
  • SRB0 the default bearer
  • Manner 3 The NR gNB sends the SRB configuration to the LTE eNB, and sends the SRB configuration to the terminal by using an RRC message of the LTE eNB.
  • Step 1708 the NR gNB sends an RRC message to the terminal.
  • the RRC message sent by the NR gNB to the terminal includes an RRC message generated by the LTE eNB RRC entity and an RRC message generated by the NR gNB RRC entity, if the NR gNB needs to generate an RRC message and an NR gNB RRC generated by the LTE eNB RRC entity.
  • the RRC message generated by the entity is transmitted to the terminal, and the NR gNB can indicate the target RRC entity of the generated RRC message.
  • the RRC message sent by the NR gNB to the terminal may also be an RRC diversity RRC message generated by the LTE eNB RRC entity received by the RN gNB from the LTE eNB.
  • the RRC message sent by the NR gNB to the terminal may also be a direct RRC message generated by the RRC entity of the NR gNB.
  • the RRC message includes an RRC RRC message received by the NR gNB from the LTE eNB and an RRC gNB own direct RRC message, and the target RRC entity of the RRC message generated by the NR gNB is indicated as follows.
  • the PDCP header or the RLC header or the new adaptation layer that carries the RRC message includes indication information for indicating the target RRC entity that generates the RRC message.
  • the NR gNB encapsulates the RRC message generated by the LTE eNB RRC entity in the RRC container of the RRC message of the NR, and transmits the SRB created by the NR gNB to the terminal.
  • Manner 3 The LTE RRC message and the NR RRC message are transmitted by different logical channels when the NR gNB transmits to the terminal.
  • the NR gNB creates two SRBs, one SRB is used to transmit the RRC message generated by the LTE eNB RRC entity, and the other is The SRB is used to transmit a message generated by the RRC entity of the NR gNB.
  • Step 1709 After receiving the RRC signaling message of the SRB transmission, the NR module of the terminal distinguishes whether the target RRC entity that generates the RRC message is generated by the LTE eNB or the NR gNB.
  • the manner in which the terminal distinguishes the target RRC entity of the RRC message is generated by the LTE eNB or the NR gNB is generated, mainly as follows.
  • the PDCP header or the RLC header or the new adaptation layer carrying the RRC message includes the indication information for indicating the target RRC entity that generates the RRC message, mainly as follows.
  • the indication information included in the PDCP header carrying the RRC message indicates the target RRC entity that generates the RRC message.
  • the RRC message generated by the LTE RRC entity is processed by the PDCP layer of the LTE, and then transmitted to the RLC layer of the NR for processing, and then processed by the MAC layer and the PHY layer of the NR, respectively, and then transmitted to the terminal through the air interface of the NR.
  • the LTE PDCP layer adds an indication information to the LTE PDCP header to distinguish that the source of the RRC message is generated by the RRC entity of the LTE.
  • the indication information is optional. If the direct RRC function is executed, the indication information has been added to the NR PDCP header, and the indication information of the LTE PDCP may not be added here.
  • the RRC message generated by the RRC entity of the NR is processed by the PDCP layer of the NR, and then transmitted to the RLC layer of the NR for processing, and then processed by the MAC layer and the PHY layer of the NR, respectively, and then transmitted to the terminal through the air interface of the NR.
  • the NR PDCP layer adds an indication information to the PDCP header to distinguish that the RRC entity in the RRC message is generated by the RRC entity.
  • the indication information is optional. If the RRC diversity function is executed, the indication information has been added in the LTE PDCP header, and the indication information of the NR PDCP may not be added here.
  • the indication information may be carried by an idle field in the LTE PDCP header, such as a C/D domain field, or a newly added field carried in the LTE PDCP header.
  • the mapping between the indication information and the LTE eNB needs to be notified to the terminal, for example, it can be sent from the LTE air interface to the terminal by using the RRC message of the LTE eNB.
  • the RRC entity After the RRC entity generates the RRC message, it is processed by the PDCP, the RLC, the MAC, and the PHY layer respectively, that is, the PDCP header, the RLC header, the MAC header, and the PHY header are added, and are transmitted to the terminal through the air interface.
  • the RRC message generated by the LTE eNB RRC entity is first processed by the PDCP layer of the LTE, the LTE PDCP header is added, and then transmitted to the RLC layer of the NR for processing, and then the NR RLC header is added, and then the NR is sent to the NR.
  • the RRC message can be performed by the RRC entity.
  • the RRC message generated by the RRC entity of the NR gNB is first processed by the PDCP layer of the NR, the NR PDCP header is added, and then transmitted to the RLC layer of the NR.
  • Processing, add NR RLC header then go to the NR's MAC layer processing, add NR MAC header, then go to NR PHY layer processing, add PHY header, and finally transmit to the terminal through NR air interface.
  • the terminal parses according to the protocol layer, the PHY header is first parsed, then the MAC, RLC, MAC, PDCP are parsed in order, and finally the RRC message is received.
  • the RRC message structure transmitted by the NR gNB to the terminal can be as shown in Table 1.
  • the RRC message generated by the NR gNB RRC entity is transmitted to the terminal through the air interface of the NR.
  • the NR gNB adds an indication message to the NR PDCP header of the NR gNB to indicate the source of the RRC message received by the terminal from the air interface of the NR, that is, the RRC message is generated.
  • the target RRC entity is an NR gNB RRC entity, that is, a message that performs a direct RRC function.
  • the correspondence between the indication information and the NR gNB needs to be notified to the terminal for example, can be sent from the NR air interface to the terminal by using the RRC message of the NR gNB.
  • the NR module of the terminal After receiving the RRC message of the NR air interface transmission, the NR module of the terminal parses the PHY header, the MAC header, and the RLC header, and parses the PDCP header, and the PDCP header may be an LTE PDCP header or an NR PDCP header, if the PDCP header includes If the indication information indicates that the target RRC entity is an LTE eNB, the RRC message is handed over to the PDCP protocol layer processing of the LTE module of the terminal, and if the target RRC entity indicated by the PDCP header indication information is the NR gNB, the RRC message is handed over. The PDCP protocol layer processing of the NR module of the terminal.
  • Option 2 The indication information included in the RLC header carrying the RRC message indicates the target RRC entity that generates the RRC message.
  • the RRC message generated by the LTE RRC entity is processed by the PDCP layer of the LTE, and then transmitted to the RLC layer of the NR for processing, and then processed by the MAC layer and the PHY layer of the NR, respectively, and then transmitted to the terminal through the air interface of the NR.
  • the NR RLC layer adds an indication message to the NR RLC header to distinguish that the source of the message in the RRC message is generated by the RRC entity of the LTE.
  • the indication information is optional. If the direct RRC function is executed, the indication information has been added in the NR RLC header, and the indication information herein may not be added.
  • the RRC message generated by the RRC entity of the NR is processed by the PDCP layer of the NR, and then transmitted to the RLC layer of the NR for processing, and then processed by the MAC layer and the PHY layer of the NR, respectively, and then transmitted to the terminal through the air interface of the NR.
  • the NR RLC layer adds an indication information to the NR RLC header to distinguish that the RRC entity in the RRC message is generated by the RRC entity.
  • the indication information is optional. If the RRC diversity function is executed, the indication information has been added in the NR RLC header, and the indication information here may not be added.
  • the NR gNB transmits the LTE RRC message generated by the LTE eNB RRC entity and the RRC message generated by the NR gNB RRC entity to the terminal through the NR air interface.
  • the NR module of the terminal After receiving the RRC message of the NR air interface transmission, the NR module of the terminal parses the PHY header and the MAC header respectively, and then parses the NR RLC header. If the indication information in the RLC header indicates that the target RRC entity is an LTE eNB, the RRC message is handed over to the terminal.
  • the PDCP protocol layer processing of the LTE module if the target RRC entity indicated by the PDCP header indication information is an NR gNB, the RRC message is handed over to the PDCP protocol layer of the NR module of the terminal, and the RRC message structure transmitted by the NR gNB to the terminal is as follows: Table 1 shows.
  • the RRC entity processes the PDCP, RLC, MAC, and PHY layers, and then adds the PDCP header, the RLC header, the MAC header, and the PHY header to the terminal through the air interface.
  • the RRC message generated by the LTE eNB RRC entity is first processed by the PDCP layer of the LTE, the LTE PDCP header is added, and then transmitted to the RLC layer of the NR for processing, and then the NR RLC header is added, and then the NR is sent to the NR.
  • the RRC message can be performed by the RRC entity.
  • the RRC message generated by the RRC entity of the NR gNB is first processed by the PDCP layer of the NR, the NR PDCP header is added, and then transmitted to the RLC layer of the NR. Processing, add NR RLC header, then go to the NR's MAC layer processing, add NR MAC header, then go to NR PHY layer processing, add PHY header, and finally transmit to the terminal through NR air interface.
  • the terminal parses, according to the protocol layer, the PHY header is first parsed, then the MAC, RLC, MAC, PDCP are parsed in order, and finally the RRC message is received.
  • the terminal judges the RRC message source through the indication information in the NR RLC in the parsing process, or judges the source of the RRC message by using the indication information in the PDCP.
  • the correspondence between the indication information needs to be notified to the terminal, for example, the correspondence between the indication information and the LTE eNB and the correspondence between the indication information and the NR gNB can be sent from the NR air interface to the terminal through the RRC message of the NR gNB or other new message.
  • This embodiment is not limited.
  • the terminal After receiving the RRC message of the NR, the terminal reads the indication information of the RLC header, and if the indication information included in the RLC header indicates that the target RRC entity is an LTE eNB, the RRC message of the NR is handed over to the PDCP protocol layer of the LTE module of the terminal. Processing, if the indication information included in the RLC header indicates that the target RRC entity is an NR gNB, the RRC message of the NR is handed over to the PDCP protocol layer processing of the NR module of the terminal.
  • the indication information included in the new adaptation layer indicates the target RRC entity that generates the RRC message.
  • the LTE eNB may add the adaptation layer and carry the indication information in the adaptation layer, or may be the NR gNB new adaptation layer and carry the indication information in the adaptation layer, and the embodiment is not limited.
  • the new adaptation layer is added between the PDCP and RLC layers of the LTE eNB.
  • the structure is shown in Table 2.
  • the new adaptation layer is added between the PDCP and RLC layers of the NR gNB, as shown in Table 3.
  • the RRC message generated by the LTE RRC entity is processed by the PDCP layer of the LTE, and then transmitted to the adaptation layer, and processed by the adaptation layer, and then transmitted to the RLC of the NR.
  • the layer processing is then processed by the MAC layer and the PHY layer of the NR, respectively, and then sent to the terminal through the air interface of the NR.
  • the adaptation layer adds a header indicating that the information is in the adaptation layer, and is used to distinguish that the source of the RRC message is generated by the RRC entity of the LTE. For the direct RRC function, after the RRC message generated by the NR, there is no need to add indication information when processing through each protocol layer.
  • the RRC message generated by the LTE RRC entity is processed by the PDCP layer of the LTE, and then transmitted to the adaptation layer, and processed by the adaptation layer, and then transmitted to the NR.
  • the RLC layer processes the packets, and then processes them through the MAC layer and the PHY layer of the NR, respectively, and then sends them to the terminal through the air interface of the NR.
  • the adaptation layer adds a header indicating that the information is in the adaptation layer, and is used to distinguish that the source of the RRC message is generated by the RRC entity of the LTE.
  • the indication information may be added in the header of the adaptation layer to indicate that the RRC message is generated by the LTE RRC entity.
  • the RRC message generated by the RRC entity of the NR passes the PDCP layer of the NR. After processing, it is transmitted to the adaptation layer, processed by the adaptation layer, and then transmitted to the RLC layer of the NR for processing, and then processed by the MAC layer and the PHY layer of the NR, respectively, and then transmitted to the terminal through the air interface of the NR.
  • an indication information is added to the adaptation layer header for distinguishing that the RRC entity in the RRC message is generated by the RRC entity.
  • the indication information is optional. If the RRC diversity function is executed, the indication information has been added in the adaptation layer header, and the indication information herein may not be added.
  • the correspondence between the indication information needs to be notified to the terminal, and the correspondence between the indication information and the LTE eNB can be sent from the LTE air interface to the terminal through the RRC message of the LTE eNB, and the correspondence between the indication information and the NR gNB can be passed through the RRC message of the NR gNB. Send from the NR air interface to the terminal.
  • the terminal After receiving the RRC message of the NR, the terminal parses the PHY header, the MAC header, and the RLC header, and after parsing the new adaptation layer header, if the indication information included in the newly added adaptation layer header indicates that the target RRC entity is an LTE eNB, then The RRC message is handed over to the PDCP protocol layer processing of the LTE module of the terminal. If the indication information included in the new adaptation layer indicates that the target RRC entity is the NR gNB, the RRC message is handed over to the PDCP protocol layer of the NR module of the terminal.
  • Differentiated mode 2 If the RRC message of the LTE is encapsulated in the RRC container of the NR air interface and transmitted to the terminal by the SRB created by the NR gNB
  • the NR gNB encapsulates the RRC message generated by the LTE RRC entity through the RRC container and transmits it to the terminal through the air interface of the NR.
  • the terminal After receiving the RRC message of the NR, the terminal identifies the content of the container in the RRC message, and if the identifier is LTE RRC in the RRC container, The RRC message generated by the entity determines that the target RRC entity is an LTE eNB, and then delivers the RRC message to the PDCP protocol layer processing of the LTE module of the terminal.
  • Differentiating mode 3 If the LTE RRC message and the NR RRC message are transmitted by using different logical channels when the NR gNB transmits to the terminal
  • the NR gNB establishes two different SRBs, and the mapping between the configuration information of the SRB and the RRC entity corresponding to the RRC message needs to be sent to the terminal in advance.
  • the RRC message generated by the NR gNB RRC entity is used by the SRB.
  • the NR air interface is sent to the terminal, and the RRC message generated by the RRC entity of the LTE eNB is sent to the terminal through the NR air interface by using another SRB.
  • the terminal After receiving the RRC message through the NR air interface, the terminal identifies the received RRC message according to different SRB configuration information.
  • the RRC entity of the LTE eNB is also the RRC entity of the NR gNB.
  • the method for transmitting the configuration information of the SRB may be performed in the NR gNB adding process, for example, the NR gNB creates different SRB configurations, and sends related configuration information to the LTE eNB through the SeNB addition request ack message, and the LTE eNB passes the RRC of the LTE eNB.
  • the message is sent to the terminal to complete the configuration of the two SRBs.
  • the configuration information of the optional SRB may also be sent to the UE by the LTE eNB or the NR gNB in other manners, such as a new RRC message, which is not limited by the present invention.
  • Step 1710 After determining the source of the RRC message according to the indication information, the NR module of the terminal submits the received RRC message to the corresponding RRC entity for processing.
  • the RRC message received by the terminal is processed by the PDCP protocol layer of the LTE module of the terminal, and if it is an RRC message generated by the RRC entity of the NR gNB, the RRC message received by the terminal
  • the PDCP of the NR module handed over to the terminal is processed.
  • the indication information may be added to the RLC layer or the MAC layer or the newly added adaptation layer (the adaptation layer increases the RLC and MAC in the NR gNB). Between the protocol layers).
  • the foregoing embodiment describes a specific process in which an LTE eNB is an anchor base station and an NR gNB is a secondary base station.
  • the direct RRC message transmission also has an RRC diversity function, that is, The direct RRC message is transmitted to the terminal through the NR gNB and the LTE eNB. Since the LTE eNB to the terminal also has the LTE RRC message, two messages can be transmitted to the terminal through one SRB, and the LTE module of the corresponding terminal receives an SRB bearer.
  • the RRC message how to distinguish the RRC message source scheme is similar to the above embodiment.
  • the low frequency base station of the NR is used as the anchor base station (MgNB), and the high frequency base station of the NR is used as the secondary base station (SgNB), how to distinguish the message source scheme is also the same.
  • MgNB anchor base station
  • SgNB secondary base station
  • the communication device can be a chip or chipset.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.
  • sequence numbers of the above processes do not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be implemented in the embodiments of the present application.
  • the process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • This functionality if implemented as a software functional unit and sold or used as a standalone product, can be stored on a computer readable storage medium.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method in accordance with various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Abstract

本发明多个方面公开一种多链接通信方法、设备和终端，辅基站接收锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；所述辅基站将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端的空口发送给所述终端，其中，PDCP报头或RLC报头或新增的适配层携带指示信息，用于指示产生RRC消息的目标RRC实体；其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。解决在LTE-NR多链接技术的场景下，NR有自己的RRC实体并且支持RRC diversity的情况下，辅基站如何传输RRC消息以及终端如何识别RRC消息的问题。

Description

多链接通信方法、设备和终端
本申请要求于2017年1月6日提交中国专利局、申请号为201710011355.4、发明名称为“多链接通信方法、设备和终端”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
本发明实施例涉及通信技术，尤其涉及一种多链接通信方法、设备和终端。
背景技术
随着用户需求和技术的飞速发展，第五代移动通信(the 5th Generation mobile communication technology，简称5G)系统或者新无线接入技术(NR，New radio)即将到来，5G系统或NR系统能够提供比长期演进(Long Term Evolution，简称LTE)网络更快的传输速率，其最高理论传输速率可达每秒数十吉字节(Gigabyte，简称Gb)。5G系统为了提高数据传输速率，提出了多链接传输的方法，即终端可以同时接入LT E网络和5G系统，通过LTE网络和5G系统的基站同时传输终端的数据。但是，现有的多链接方案中，数据分流锚点在LTE网络中，即通过LTE网络的基站为主基站，NR网络基站为辅基站，主基站分流部分数据通过辅基站传输到终端，数据主要通过LTE网络传输，相比于数据单独在LTE网络传输，也能够提高数据传输速率，但是并不能发挥5G系统数据传输速率的优势。
目前标准讨论LTE-NR多链接技术(LTE-NR tight interworking)涉及的两个主要课题，一个是无线资源控制(RRC，Radio Resource Control)多样化，简称RRC diversity；另一个是新无线接入技术基站或5G基站(NR gNB)作为辅基站时直接生成RRC消息通过NR空口传输到终端，简称direct RRC消息(direct RRC message)。
如图1和图2所示，为现有技术中一种LTE-NR多链接技术网络架构示意图，该LTE-NR多链接技术网络包括LTE的核心网(EPC，E-utran packet core)、新核心网(NGC，NG-core)、LTE基站(eNB)和新无线接入技术基站(NR gNB)，其中，新无线接入技术可以为5G，如果锚基站是LTE eNB，则对应的辅基站为NR gNB，相应的，如果锚基站是NR gNB，则对应的辅基站为LTE eNB。
如果LTE eNB为锚基站，协议栈结构如图3所示，支持3C和1A，3C(split bearer)是以LTE eNB为锚点，从分组数据汇聚协议(PDCP，Packet Data Convergence Protocol)层分流数据到gNB，控制面(Control Plane，CP)和用户面(User Plane,UP)都在LTE eNB，1A(SCG bearer)是控制面在LTE eNB，用户面在EPC和gNB之间，如图1所示。
如果NR gNB为锚基站，网络架构如图2所示，协议栈结构如图4所示。
LTE-NR多链接技术(LTE-NR tight interworking/LTE-NR DC)是指终端通过LTE接入，控制面保留在LTE，之后用户面(User Plane,UP)通过类似LTE DC (dual-connectivity)的方式同时利用LTE和5G新空口，即用户面锚在LTE分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层进行数据包粒度或者承载粒度的分流，类似的，也可以是终端通过5G接入，控制面保留在5G，类似LTE DC，将用户面锚在5G的PDCP层进行分流。
为了满足低时延高可靠链接(URLLC，Ultra-Reliable and Low Latency Communications)业务的需求，提高LTE-NR多链接场景下的RRC消息传输的可靠性，如果锚基站是LTE eNB，锚基站(MeNB)产生的RRC消息可以分别通过LTE和NR的空口传输给终端，当通过NR的空口传输给终端时，RRC消息需要通过LTE和NR之间的接口传输给NR gNB，然后由NR gNB发送给终端，终端的NR模块收到该信令消息后汇聚到LTE模块处理。
在LTE-NR多链接的场景下，NR可以有自己的RRC实体，可以直接创建并发送RRC消息到终端。即当LTE eNB增加NR gNB进行多流汇聚的数据传输后，如果NR gNB有配置需要更改，NR gNB直接生成RRC配置消息，通过NR的空口发给终端。
当NR有自己的RRC实体可以发送direct RRC消息消息同时支持RRC diversity两种技术的情况下，NR空口的RRC消息怎么传输，接收端怎么识别目前没有任何技术方案。
发明内容
本发明实施例提供一种多链接通信方法、设备和终端，解决在LTE-NR多链接技术的场景下，NR有自己的RRC实体并且支持RRC diversity的情况下，辅基站如何传输RRC消息以及终端如何识别RRC消息的问题。
本发明的第一方面提供一种多链接通信方法，包括：
辅基站接收锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
所述辅基站将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端的空口发送给所述终端，其中，分组数据汇聚协议(PDCP，Packet Data Convergence Protocol)报头或无线链路层控制(RLC，Radio Link Control)报头或新增的适配层携带指示信息，用于指示产生RRC消息的目标RRC实体；
其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述指示信息通过所述PDCP报头中的空闲字段携带，或者在PDCP报头中新增加字段携带。
可选的，所述指示信息包括第一指示信息和第二指示信息，其中，所述第一指示信息用于指示所述目标RRC实体为所述锚基站的RRC实体，所述第二指示信息用于指示所述目标RRC实体为所述辅基站的RRC实体。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的PDCP报头中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述第二指示信息由所述辅基站加入在所述辅基站的PDCP报头中。
可选的，所述第一指示信息和所述第二指示信息由所述辅基站加入在所述辅基站的 RLC报头中。
可选的，所述方法还包括：所述辅基站将所述第一指示信息与所述锚基站的RRC实体的对应关系和所述第二指示信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的新增适配层中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述第二指示信息由所述辅基站加入在所述辅基站的新增适配层中。
可选的，所述第一指示信息与所述锚基站的RRC实体的对应关系由所述锚基站通过其与终端的空口发送给所述终端，所述方法还包括：
所述辅基站将所述第二指示信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
可选的，所述方法还包括：所述辅基站将上行授权UL grant信息通过所述锚基站与所述辅基站之间的接口发送给所述锚基站，以便所述锚基站将所述锚基站的RRC实体产生的RRC消息发送给终端并由所述锚基站指示所述终端向所述辅基站进行RRC连接建立。
可选的，所述方法还包括：所述辅基站向所述终端发送的随机接入响应消息中携带上行授权UL grant信息，指示所述终端向所述辅基站进行RRC连接建立。
可选的，所述辅基站具有传输锚基站的RRC实体产生的RRC消息的能力和直传所述辅基站的RRC实体产生的RRC消息的能力。
本发明的第二方面提供一种多链接通信方法，包括：
辅基站接收锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
所述辅基站将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端的空口发送给所述终端，其中，所述第一RRC消息由所述辅基站封装在RRC容器RRC container中，以便当所述终端从所述RRC container中解析出所述第一RRC消息时，确定所述第一RRC消息由所述锚基站的RRC实体产生；
其中，所述锚基站和所述辅基站采用不同的无线接入技术。
本发明的第三方面提供一种多链接通信方法，包括：
辅基站接收锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
所述辅基站将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端空口的两个不同的逻辑信道传输给所述终端，以便所述终端根据不同逻辑信道区分产生RRC消息的目标RRC实体；
其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述方法还包括：所述辅基站建立对应所述两个不同的逻辑信道的两个不同的SRB；
所述辅基站将所述两个不同的SRB的配置信息和对应产生RRC消息的RRC实体的对应关系发送给所述终端。
可选的，所述两个不同的SRB包括第一SRB和第二SRB，其中，所述第一SRB用于传输所述第一RRC消息，所述第二SRB用于传输所述第二RRC消息，
所述辅基站将所述两个不同的SRB的配置信息和对应产生RRC消息的RRC实体的对应关系发送给所述终端具体包括：
所述辅基站将所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系通过所述锚基站和所述辅基站之间的接口发送给所述锚基站，由所述锚基站通过其与所述终端的空口发送给所述终端；
所述辅基站将所述第二SRB的配置信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
本发明的第四方面提供一种多链接通信方法，包括：
终端通过辅基站与所述终端的空口接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
所述终端解析所述RRC消息时从PDCP报头或RLC报头或新增的适配层中获得指示信息，所述指示信息用于指示产生RRC消息的目标RRC实体；
所述终端根据所述指示信息判断出产生RRC消息的目标RRC实体后，将所收到的RRC消息交于对应的RRC模块进行处理；
其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述指示信息通过所述PDCP报头中的空闲字段携带，或者在PDCP报头中新增加字段携带。
可选的，所述指示信息包括第一指示信息和第二指示信息，其中，所述第一指示信息用于指示所述目标RRC实体为所述锚基站的RRC实体，所述第二指示信息用于指示所述目标RRC实体为所述辅基站的RRC实体。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的PDCP报头中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述第二指示信息由所述辅基站加入在所述辅基站的PDCP报头中。
可选的，所述第一指示信息和所述第二指示信息由所述辅基站加入在所述辅基站的RLC报头中。
可选的，所述方法还包括：所述终端通过所述辅基站与所述终端的空口接收所述辅基站发送的所述第一指示信息与所述锚基站的RRC实体的对应关系和所述第二指示信息与所述辅基站的RRC实体的对应关系。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的新增适配层中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站，然后再由所述辅基站通过其与所述终端的空口发送给所述终端；所述第二指示信息由所述辅基站加入在所述辅基站的新增适配层中，然后再由所述辅基站通过其与所述终端的空口发送给所述终端。
可选的，所述第一指示信息与所述锚基站的RRC实体的对应关系由所述锚基站通过其与终端的空口发送给所述终端，所述方法还包括：
所述终端通过所述辅基站与所述终端的空口接收所述辅基站发送的所述第二指示 信息与所述辅基站的RRC实体的对应关系。
可选的，所述辅基站具有传输锚基站的RRC实体产生的RRC消息的能力和直传所述辅基站的RRC实体产生的RRC消息的能力。
本发明的第五方面提供一种多链接通信方法，包括：
终端通过辅基站与所述终端的空口接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
所述终端解析所述RRC消息时从RRC容器RRC container中解析出RRC消息，则确定所述RRC container中解析出的RRC消息为所述锚基站的RRC实体产生的所述第一RRC消息；
其中，所述锚基站和所述辅基站采用不同的无线接入技术。
本发明的第六方面提供一种多链接通信方法，包括：
终端通过辅基站与所述终端的空口的不同逻辑信道接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
所述终端根据不同逻辑信道区分产生RRC消息的目标RRC实体；
其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述方法还包括：所述终端接收两个不同的SRB的配置信息，其中，两个不同的SRB的配置信息对应所述两个不同的逻辑信道，且包括SRB的配置信息和对应产生RRC消息的RRC实体的对应关系。
可选的，所述两个不同的SRB包括第一SRB和第二SRB，其中，所述第一SRB用于传输所述第一RRC消息，所述第二SRB用于传输所述第二RRC消息，
所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系由所述辅基站通过所述锚基站和所述辅基站之间的接口发送给所述锚基站，所述方法还包括：
所述终端接收由所述锚基站通过其与所述终端的空口发送的所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系；
所述终端接收由所述辅基站通过所述辅基站与所述终端的空口发送的所述第二SRB的配置信息与所述辅基站的RRC实体的对应关系。
本发明的第七方面提供一种多链接的辅基站，包括：
接收器，用于接收锚基站的RRC实体产生的第一RRC消息；
RRC实体，用于产生第二RRC消息；
发送器，用于将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端的空口发送给所述终端，其中，PDCP报头或RLC报头或新增的适配层携带指示信息，用于指示产生RRC消息的目标RRC实体；
其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述指示信息通过所述PDCP报头中的空闲字段携带，或者在PDCP报头中新增加字段携带。
可选的，所述指示信息包括第一指示信息和第二指示信息，其中，所述第一指示信息用于指示所述目标RRC实体为所述锚基站的RRC实体，所述第二指示信息用于指示所述目标RRC实体为所述辅基站的RRC实体。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的PDCP报头中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述辅基站还包括：处理器，用于将所述第二指示信息加入在所述辅基站的PDCP报头中。
可选的，所述辅基站还包括：处理器，用于将所述第一指示信息和所述第二指示信息加入在所述辅基站的RLC报头中。
可选的，所述发送器还用于将所述第一指示信息与所述锚基站的RRC实体的对应关系和所述第二指示信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的新增适配层中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述辅基站还包括：处理器，用于将所述第二指示信息加入在所述辅基站的新增适配层中。
可选的，所述第一指示信息与所述锚基站的RRC实体的对应关系由所述锚基站通过其与终端的空口发送给所述终端，所述发送器还用于将所述第二指示信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
可选的，所述发送器还用于将上行授权UL grant信息通过所述锚基站与所述辅基站之间的接口发送给所述锚基站，以便所述锚基站将所述锚基站的RRC实体产生的RRC消息发送给终端并由所述锚基站指示所述终端向所述辅基站进行RRC连接建立。
可选的，所述发送器还用于向所述终端发送的随机接入响应消息中携带上行授权UL grant信息，指示所述终端向所述辅基站进行RRC连接建立。
可选的，所述辅基站具有传输锚基站的RRC实体产生的RRC消息的能力和直传所述辅基站的RRC实体产生的RRC消息的能力。
本发明的第八方面提供一种多链接辅基站，包括：
接收器，用于接收锚基站的RRC实体产生的第一RRC消息；
RRC实体，用于产生第二RRC消息；
发送器，用于将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端的空口发送给所述终端，
处理器，用于将所述第一RRC消息封装在RRC容器RRC container中，以便当所述终端从所述RRC container中解析出所述第一RRC消息时，确定所述第一RRC消息由所述锚基站的RRC实体产生；
其中，所述锚基站和所述辅基站采用不同的无线接入技术。
本发明的第九方面提供一种多链接辅基站，包括：
接收器，用于接收锚基站的RRC实体产生的第一RRC消息；
RRC实体，用于产生第二RRC消息；
发送器，用于将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端空口的两个不同的逻辑信道传输给所述终端，以便所述终端根据不同逻辑信道区分产生RRC消息的目标RRC实体；
其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述锚基站还包括：处理器，用于建立对应所述两个不同的逻辑信道的两个不同的SRB；
所述发送器，还用于将所述两个不同的SRB的配置信息和对应产生RRC消息的RRC实体的对应关系发送给所述终端。
可选的，所述两个不同的SRB包括第一SRB和第二SRB，其中，所述第一SRB用于传输所述第一RRC消息，所述第二SRB用于传输所述第二RRC消息，
所述发送器，还用于将所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系通过所述锚基站和所述辅基站之间的接口发送给所述锚基站，由所述锚基站通过其与所述终端的空口发送给所述终端；
所述发送器，还用于将所述第二SRB的配置信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
本发明的第十方面提供一种终端，包括：
接收器，用于通过辅基站与所述终端的空口接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
处理器，用于解析所述RRC消息时从PDCP报头或RLC报头或新增的适配层中获得指示信息，所述指示信息用于指示产生RRC消息的目标RRC实体；根据所述指示信息判断出产生RRC消息的目标RRC实体后，将所收到的RRC消息交于对应的RRC模块进行处理；
其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述指示信息通过所述PDCP报头中的空闲字段携带，或者在PDCP报头中新增加字段携带。
可选的，所述指示信息包括第一指示信息和第二指示信息，其中，所述第一指示信息用于指示所述目标RRC实体为所述锚基站的RRC实体，所述第二指示信息用于指示所述目标RRC实体为所述辅基站的RRC实体。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的PDCP报头中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述第二指示信息由所述辅基站加入在所述辅基站的PDCP报头中。
可选的，所述第一指示信息和所述第二指示信息由所述辅基站加入在所述辅基站的RLC报头中。
可选的，所述接收器，还用于通过所述辅基站与所述终端的空口接收所述辅基站发送的所述第一指示信息与所述锚基站的RRC实体的对应关系和所述第二指示信息与所述辅基站的RRC实体的对应关系。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的新增适配层中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站，所述第二指示信息由所述辅基站加入在所述辅基站的新增适配层中，所述接收器，还用于通过所述辅基站与所述终 端的空口从所述辅基站接收所述第一指示信息和所述第二指示信息；
可选的，所述接收器，还用于通过所述辅基站与所述终端的空口接收所述辅基站发送的所述第二指示信息与所述辅基站的RRC实体的对应关系。
可选的，所述辅基站具有传输锚基站的RRC实体产生的RRC消息的能力和直传所述辅基站的RRC实体产生的RRC消息的能力。
本发明的第十一方面提供一种终端，包括：
接收器，用于通过辅基站与所述终端的空口接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
处理器，用于解析所述RRC消息时从RRC容器RRC container中解析出RRC消息，则确定所述RRC container中解析出的RRC消息为所述锚基站的RRC实体产生的所述第一RRC消息；
其中，所述锚基站和所述辅基站采用不同的无线接入技术。
本发明的第十二方面提供一种终端，包括：
接收器，用于通过辅基站与所述终端的空口的不同逻辑信道接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
处理器，用于根据不同逻辑信道区分产生RRC消息的目标RRC实体；
其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述接收器，还用于接收两个不同的SRB的配置信息，其中，两个不同的SRB的配置信息对应所述两个不同的逻辑信道，且包括SRB的配置信息和对应产生RRC消息的RRC实体的对应关系。
可选的，所述两个不同的SRB包括第一SRB和第二SRB，其中，所述第一SRB用于传输所述第一RRC消息，所述第二SRB用于传输所述第二RRC消息，
所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系由所述辅基站通过所述锚基站和所述辅基站之间的接口发送给所述锚基站，所述接收器，还用于接收由所述锚基站通过其与所述终端的空口发送的所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系；
所述接收器，还用于接收由所述辅基站通过所述辅基站与所述终端的空口发送的所述第二SRB的配置信息与所述辅基站的RRC实体的对应关系。
上述描述的多链接通信方法、设备和终端，解决在LTE-NR多链接技术的场景下，NR有自己的RRC实体并且支持RRC diversity的情况下，辅基站如何传输RRC消息以及终端如何识别RRC消息的问题。
附图说明
图1为现有技术中一种LTE-NR多链接技术网络架构示意图；
图2为现有技术中另一种LTE-NR多链接技术网络架构示意图；
图3为现有技术中LTE eNB为锚基站的协议栈结构示意图；
图4为现有技术中NR gNB为锚基站的协议栈结构示意图；
图5为本发明一实施例的一种多链接通信方法的流程示意图；
图6为本发明另一实施例的另一种多链接通信方法的流程示意图；
图7为本发明另一实施例的另一种多链接通信方法的流程示意图；
图8为本发明另一实施例的另一种多链接通信方法的流程示意图；
图9为本发明另一实施例的另一种多链接通信方法的流程示意图；
图10为本发明另一实施例的一种辅基站的结构示意图；
图11为本发明另一实施例的另一种辅基站的结构示意图；
图12为本发明另一实施例的另一种辅基站的结构示意图；
图13为本发明另一实施例的一种终端的结构示意图；
图14为本发明另一实施例的另一种终端的结构示意图
图15为本发明另一实施例的另一种终端的结构示意图；
图16为本发明实施例适用的多链接网络架构的示意图；
图17为本发明另一实施例的另一种多链接通信方法的流程示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供的多链接(multiple connectivity)通信方法，是指终端可以同时接入第一网络和新无线接入(New radio access technical，简称New RAT或NR)网络，第一网络的接入网设备和新无线接入网络的接入网设备可以同时为终端提供服务。其中，第一网络可以为LTE网络、无线保真(Wireless Fidelity，简称WIFI)网络、全球移动通讯(Global System of Mobile communication，简称GSM)网络、码分多址(Code Division Multiple Access，简称CDMA)网络、宽带码分多址(Wideband Code Division Multiple Access，简称WCDMA)网络等目前已有的网络。其中，新无线接入网络能够提供比LTE网络更高的传输速率，新无线接入网络也称为5G网络、下一代网络等，新无线接入网络的接入网设备也称为NR Node(节点)或者NR BS(基站，Base Station)，在此不作限制。
本发明实施例中多链接具体是指终端通过第一网络的接入网设备接入第一网络的核心网，控制面(Control Plane，简称CP)数据在第一网络传输，用户面(User Plane，简称UP)数据同时在第一网络的空口和新无线接入网络的空口进行传输。用户面锚点在新无线接入网络的接入网设备的(Packet Data Convergence Protocol，PDCP)层进行数据包粒度或者承载粒度的分流。
如图5所示，为本发明另一实施例的一种多链接通信方法的流程示意图，本实施例中，如果LTE eNB为锚基站或主基站(MeNB，master eNB)，则NR gNB为辅基站(SgNB，Secondary gNB)，如果NR gNB为锚基站或主基站(MgNB，Master gNB)，则LTE eNB 为辅基站(SeNB，Secondary eNB)，主要如下所述。
步骤501，辅基站接收锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息。
步骤502，所述辅基站将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端的空口发送给所述终端，其中，PDCP报头或RLC报头或新增的适配层携带指示信息，用于指示产生RRC消息的目标RRC实体；
其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述指示信息通过所述PDCP报头中的空闲字段携带，或者在PDCP报头中新增加字段携带。
可选的，所述指示信息包括第一指示信息和第二指示信息，其中，所述第一指示信息用于指示所述目标RRC实体为所述锚基站的RRC实体，所述第二指示信息用于指示所述目标RRC实体为所述辅基站的RRC实体。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的PDCP报头中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述第二指示信息由所述辅基站加入在所述辅基站的PDCP报头中。
可选的，所述第一指示信息和所述第二指示信息由所述辅基站加入在所述辅基站的RLC报头中。
可选的，所述方法还包括：所述辅基站将所述第一指示信息与所述锚基站的RRC实体的对应关系和所述第二指示信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的新增适配层中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述第二指示信息由所述辅基站加入在所述辅基站的新增适配层中。
可选的，所述第一指示信息和所述第二指示信息由所述辅基站加入在所述辅基站的新增适配层中。
可选的，所述第一指示信息与所述锚基站的RRC实体的对应关系由所述锚基站通过其与终端的空口发送给所述终端，所述方法还包括：所述辅基站将所述第二指示信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
可选的，所述方法还包括：所述辅基站将上行授权UL grant信息通过所述锚基站与所述辅基站之间的接口发送给所述锚基站，以便所述锚基站将所述锚基站的RRC实体产生的RRC消息发送给终端并由所述锚基站指示所述终端向所述辅基站进行RRC连接建立。
可选的，所述方法还包括：所述辅基站向所述终端发送的随机接入响应消息中携带上行授权UL grant信息，指示所述终端向所述辅基站进行RRC连接建立。
可选的，所述辅基站具有传输锚基站的RRC实体产生的RRC消息的能力和直传所述辅基站的RRC实体产生的RRC消息的能力。
如图6所示，为本发明另一实施例的另一种多链接通信方法的流程示意图，本实施 例中，如果LTE eNB为锚基站或主基站(MeNB，master eNB)，则NR gNB为辅基站(SgNB，Secondary gNB)，如果NR gNB为锚基站或主基站(MgNB，Master gNB)，则LTE eNB为辅基站(SeNB，Secondary eNB)，主要如下所述。
步骤601，辅基站接收锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息。
步骤602，所述辅基站将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端的空口发送给所述终端，其中，所述第一RRC消息由所述辅基站封装在RRC容器RRC container中，以便当所述终端从所述RRC container中解析出所述第一RRC消息时，确定所述第一RRC消息由所述锚基站的RRC实体产生；其中，所述锚基站和所述辅基站采用不同的无线接入技术。
如图7所示，为本发明另一实施例的另一种多链接通信方法的流程示意图，本实施例中，如果LTE eNB为锚基站或主基站(MeNB，master eNB)，则NR gNB为辅基站(SgNB，Secondary gNB)，如果NR gNB为锚基站或主基站(MgNB，Master gNB)，则LTE eNB为辅基站(SeNB，Secondary eNB)，主要如下所述。
步骤701，辅基站接收锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
步骤702，所述辅基站将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端空口的两个不同的逻辑信道传输给所述终端，以便所述终端根据不同逻辑信道区分产生RRC消息的目标RRC实体；其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述方法还包括：所述辅基站建立对应所述两个不同的逻辑信道的两个不同的SRB(signal radio bearer，信令承载，主要用于承载信令消息)。
所述辅基站将所述两个不同的SRB的配置信息和对应产生RRC消息的RRC实体的对应关系发送给所述终端。
可选的，所述两个不同的SRB包括第一SRB和第二SRB，其中，所述第一SRB用于传输所述第一RRC消息，所述第二SRB用于传输所述第二RRC消息，
所述辅基站将所述两个不同的SRB的配置信息和对应产生RRC消息的RRC实体的对应关系发送给所述终端具体包括：
所述辅基站将所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系通过所述锚基站和所述辅基站之间的接口发送给所述锚基站，由所述锚基站通过其与所述终端的空口发送给所述终端；
所述辅基站将所述第二SRB的配置信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
如图8所示，为本发明另一实施例的另一种多链接通信方法的流程示意图，本实施例从终端侧进行描述，如果LTE eNB为锚基站或主基站(MeNB，master eNB)，则NR gNB为辅基站(SgNB，Secondary gNB)，如果NR gNB为锚基站或主基站(MgNB，Master gNB)，则LTE eNB为辅基站(SeNB，Secondary eNB)，主要如下所述。
步骤801，终端通过辅基站与所述终端的空口接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实 体产生第二RRC消息。
步骤802，所述终端解析所述RRC消息时从PDCP报头或RLC报头或新增的适配层中获得指示信息，所述指示信息用于指示产生RRC消息的目标RRC实体。
步骤803，所述终端根据所述指示信息判断出产生RRC消息的目标RRC实体后，将所收到的RRC消息交于对应的RRC模块进行处理；其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述指示信息通过所述PDCP报头中的空闲字段携带，或者在PDCP报头中新增加字段携带。
可选的，所述指示信息包括第一指示信息和第二指示信息，其中，所述第一指示信息用于指示所述目标RRC实体为所述锚基站的RRC实体，所述第二指示信息用于指示所述目标RRC实体为所述辅基站的RRC实体。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的PDCP报头中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述第二指示信息由所述辅基站加入在所述辅基站的PDCP报头中。
可选的，所述第一指示信息和所述第二指示信息由所述辅基站加入在所述辅基站的RLC报头中。
可选的，所述方法还包括：所述终端通过所述辅基站与所述终端的空口接收所述辅基站发送的所述第一指示信息与所述锚基站的RRC实体的对应关系和所述第二指示信息与所述辅基站的RRC实体的对应关系。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的新增适配层中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站，然后再由所述辅基站通过其与所述终端的空口发送给所述终端；所述第二指示信息由所述辅基站加入在所述辅基站的新增适配层中，然后再由所述辅基站通过其与所述终端的空口发送给所述终端。
可选的，所述终端通过所述辅基站与所述终端的空口接收所述第一指示信息和所述第二指示信息。
可选的，所述第一指示信息与所述锚基站的RRC实体的对应关系由所述锚基站通过其与终端的空口发送给所述终端，所述方法还包括：所述终端通过所述辅基站与所述终端的空口接收所述辅基站发送的所述第二指示信息与所述辅基站的RRC实体的对应关系。
可选的，所述辅基站具有传输锚基站的RRC实体产生的RRC消息的能力和直传所述辅基站的RRC实体产生的RRC消息的能力。
如图9所示，为本发明另一实施例的另一种多链接通信方法的流程示意图，本实施例从终端侧进行描述，如果LTE eNB为锚基站或主基站(MeNB，master eNB)，则NR gNB为辅基站(SgNB，Secondary gNB)，如果NR gNB为锚基站或主基站(MgNB，Master gNB)，则LTE eNB为辅基站(SeNB，Secondary eNB)，主要如下所述。
步骤901，终端通过辅基站与所述终端的空口接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息。
步骤902，所述终端解析所述RRC消息时从RRC容器RRC container中解析出RRC消息，则确定所述RRC container中解析出的RRC消息为所述锚基站的RRC实体产生的所述第一RRC消息；其中，所述锚基站和所述辅基站采用不同的无线接入技术。
本发明的第六方面提供一种多链接通信方法，包括：
终端通过辅基站与所述终端的空口的不同逻辑信道接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
所述终端根据不同逻辑信道区分产生RRC消息的目标RRC实体；
其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述方法还包括：所述终端接收两个不同的SRB的配置信息，其中，两个不同的SRB的配置信息对应所述两个不同的逻辑信道，且包括SRB的配置信息和对应产生RRC消息的RRC实体的对应关系。
可选的，所述两个不同的SRB包括第一SRB和第二SRB，其中，所述第一SRB用于传输所述第一RRC消息，所述第二SRB用于传输所述第二RRC消息，
所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系由所述辅基站通过所述锚基站和所述辅基站之间的接口发送给所述锚基站，所述方法还包括：
所述终端接收由所述锚基站通过其与所述终端的空口发送的所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系；
所述终端接收由所述辅基站通过所述辅基站与所述终端的空口发送的所述第二SRB的配置信息与所述辅基站的RRC实体的对应关系。
如图10所示，为本发明另一实施例的一种辅基站的结构示意图，本实施例中，如果LTE eNB为锚基站或主基站(MeNB，master eNB)，则NR gNB为辅基站(SgNB，Secondary gNB)，如果NR gNB为锚基站或主基站(MgNB，Master gNB)，则LTE eNB为辅基站(SeNB，Secondary eNB)，主要如下所述。
所述辅基站包括：接收器1001、RRC实体1002、发送器1003和处理器1004。
所述接收器1001，用于接收锚基站的RRC实体产生的第一RRC消息。
所述RRC实体1002，用于产生第二RRC消息。
所述发送器1003，用于将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端的空口发送给所述终端，其中，PDCP报头或RLC报头或新增的适配层携带指示信息，用于指示产生RRC消息的目标RRC实体；其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述指示信息通过所述PDCP报头中的空闲字段携带，或者在PDCP报头中新增加字段携带。
可选的，所述指示信息包括第一指示信息和第二指示信息，其中，所述第一指示信息用于指示所述目标RRC实体为所述锚基站的RRC实体，所述第二指示信息用于指示所述目标RRC实体为所述辅基站的RRC实体。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的PDCP报头中，并通 过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述辅基站还包括：处理器1004，用于将所述第二指示信息加入在所述辅基站的PDCP报头中。
可选的，所述辅基站还包括：处理器1004，用于将所述第一指示信息和所述第二指示信息加入在所述辅基站的RLC报头中。
可选的，所述发送器1003还用于将所述第一指示信息与所述锚基站的RRC实体的对应关系和所述第二指示信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的新增适配层中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述辅基站还包括：处理器1004，用于将所述第二指示信息加入在所述辅基站的新增适配层中。
可选的，所述第一指示信息与所述锚基站的RRC实体的对应关系由所述锚基站通过其与终端的空口发送给所述终端，所述发送器1003还用于将所述第二指示信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
可选的，所述发送器1003还用于将上行授权UL grant信息通过所述锚基站与所述辅基站之间的接口发送给所述锚基站，以便所述锚基站将所述锚基站的RRC实体产生的RRC消息发送给终端并由所述锚基站指示所述终端向所述辅基站进行RRC连接建立。
可选的，所述发送器1003还用于向所述终端发送的随机接入响应消息中携带上行授权UL grant信息，指示所述终端向所述辅基站进行RRC连接建立。
可选的，所述辅基站具有传输锚基站的RRC实体产生的RRC消息的能力和直传所述辅基站的RRC实体产生的RRC消息的能力。
如图11所示，为本发明另一实施例的一种辅基站的结构示意图，本实施例中，如果LTE eNB为锚基站或主基站(MeNB，master eNB)，则NR gNB为辅基站(SgNB，Secondary gNB)，如果NR gNB为锚基站或主基站(MgNB，Master gNB)，则LTE eNB为辅基站(SeNB，Secondary eNB)，主要如下所述。
所述辅基站，包括：接收器1101，用于接收锚基站的RRC实体产生的第一RRC消息；RRC实体1102，用于产生第二RRC消息；发送器1103，用于将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端的空口发送给所述终端；处理器1104，用于将所述第一RRC消息封装在RRC容器RRC container中，以便当所述终端从所述RRC container中解析出所述第一RRC消息时，确定所述第一RRC消息由所述锚基站的RRC实体产生；其中，所述锚基站和所述辅基站采用不同的无线接入技术。
如图12所示，为本发明另一实施例的一种辅基站的结构示意图，本实施例中，如果LTE eNB为锚基站或主基站(MeNB，master eNB)，则NR gNB为辅基站(SgNB，Secondary gNB)，如果NR gNB为锚基站或主基站(MgNB，Master gNB)，则LTE eNB为辅基站(SeNB，Secondary eNB)，主要如下所述。
所述辅基站包括：接收器1201，用于接收锚基站的RRC实体产生的第一RRC消息；RRC实体1202，用于产生第二RRC消息；发送器1203，用于将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端空口的两个不同的逻辑信道传输给所述终端，以便所述终端根据不同逻辑信道区分产生RRC消息的目标RRC实体；其中，所述目标 RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述锚基站还包括：处理器1204，用于建立对应所述两个不同的逻辑信道的两个不同的SRB。
所述发送器1203，还用于将所述两个不同的SRB的配置信息和对应产生RRC消息的RRC实体的对应关系发送给所述终端。
可选的，所述两个不同的SRB包括第一SRB和第二SRB，其中，所述第一SRB用于传输所述第一RRC消息，所述第二SRB用于传输所述第二RRC消息，所述发送器1203，还用于将所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系通过所述锚基站和所述辅基站之间的接口发送给所述锚基站，由所述锚基站通过其与所述终端的空口发送给所述终端；所述发送器1203，还用于将所述第二SRB的配置信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
如图13所示，为本发明另一实施例的一种终端的结构示意图，本实施例中，如果LTE eNB为锚基站或主基站(MeNB，master eNB)，则NR gNB为辅基站(SgNB，Secondary gNB)，如果NR gNB为锚基站或主基站(MgNB，Master gNB)，则LTE eNB为辅基站(SeNB，Secondary eNB)，主要如下所述。
所述终端包括：接收器1301，用于通过辅基站与所述终端的空口接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；处理器1302，用于解析所述RRC消息时从PDCP报头或RLC报头或新增的适配层中获得指示信息，所述指示信息用于指示产生RRC消息的目标RRC实体；根据所述指示信息判断出产生RRC消息的目标RRC实体后，将所收到的RRC消息交于对应的RRC模块进行处理；其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述指示信息通过所述PDCP报头中的空闲字段携带，或者在PDCP报头中新增加字段携带。
可选的，所述指示信息包括第一指示信息和第二指示信息，其中，所述第一指示信息用于指示所述目标RRC实体为所述锚基站的RRC实体，所述第二指示信息用于指示所述目标RRC实体为所述辅基站的RRC实体。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的PDCP报头中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述第二指示信息由所述辅基站加入在所述辅基站的PDCP报头中。
可选的，所述第一指示信息和所述第二指示信息由所述辅基站加入在所述辅基站的RLC报头中。
可选的，所述接收器1301，还用于通过所述辅基站与所述终端的空口接收所述辅基站发送的所述第一指示信息与所述锚基站的RRC实体的对应关系和所述第二指示信息与所述辅基站的RRC实体的对应关系。
可选的，所述第一指示信息由所述锚基站加入在所述锚基站的新增适配层中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站，所述第二指示信息由所述辅 基站加入在所述辅基站的新增适配层中，所述接收器1301，还用于通过所述辅基站与所述终端的空口从所述辅基站接收所述第一指示信息和所述第二指示信息；
可选的，所述接收器1301，还用于通过所述辅基站与所述终端的空口接收所述辅基站发送的所述第二指示信息与所述辅基站的RRC实体的对应关系。
可选的，所述辅基站具有传输锚基站的RRC实体产生的RRC消息的能力和直传所述辅基站的RRC实体产生的RRC消息的能力。
如图14所示，为本发明另一实施例的一种终端的结构示意图，本实施例中，如果LTE eNB为锚基站或主基站(MeNB，master eNB)，则NR gNB为辅基站(SgNB，Secondary gNB)，如果NR gNB为锚基站或主基站(MgNB，Master gNB)，则LTE eNB为辅基站(SeNB，Secondary eNB)，主要如下所述。
所述终端包括接收器1401，用于通过辅基站与所述终端的空口接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；处理器1402，用于解析所述RRC消息时从RRC容器RRC container中解析出RRC消息，则确定所述RRC container中解析出的RRC消息为所述锚基站的RRC实体产生的所述第一RRC消息；其中，所述锚基站和所述辅基站采用不同的无线接入技术。
如图15所示，为本发明另一实施例的另一种终端的结构示意图，本实施例中，如果LTE eNB为锚基站或主基站(MeNB，master eNB)，则NR gNB为辅基站(SgNB，Secondary gNB)，如果NR gNB为锚基站或主基站(MgNB，Master gNB)，则LTE eNB为辅基站(SeNB，Secondary eNB)，主要如下所述。
所述终端包括接收器1501，用于通过辅基站与所述终端的空口的不同逻辑信道接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；处理器1502，用于根据不同逻辑信道区分产生RRC消息的目标RRC实体；其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
可选的，所述接收器1501，还用于接收两个不同的SRB的配置信息，其中，两个不同的SRB的配置信息对应所述两个不同的逻辑信道，且包括SRB的配置信息和对应产生RRC消息的RRC实体的对应关系。
可选的，所述两个不同的SRB包括第一SRB和第二SRB，其中，所述第一SRB用于传输所述第一RRC消息，所述第二SRB用于传输所述第二RRC消息，
所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系由所述辅基站通过所述锚基站和所述辅基站之间的接口发送给所述锚基站，所述接收器1501，还用于接收由所述锚基站通过其与所述终端的空口发送的所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系；
所述接收器1501，还用于接收由所述辅基站通过所述辅基站与所述终端的空口发送的所述第二SRB的配置信息与所述辅基站的RRC实体的对应关系。
如图16所示，以第一网络为LTE网络，新无线接入网络为5G网络为例，图16为本发明实施例适用的多链接网络架构的示意图，如图16所示，图16所示多链接网络架 构中包括LTE网络的接入网设备、新无线接入网络的接入网设备和LTE网络的核心网设备，其中，LTE网络的接入网设备包括LTE eNB，新无线接入网络的接入网设备包括NR gNB，LTE的核心网设备包括：移动性管理实体(Mobility Management Entity，简称MME)或服务网关(Serving GateWay，简称S-GW)，新无线接入网络接入网设备的功能与LTE网络的接入网设备的功能类似，都能够为终端提供安全认证、计费、移动管理等功能，LTE网络的接入网设备与新无线接入网络的接入网设备之间的接口为新接口，该新接口可以称为X5接口或其他名称，在此不作限制。图16所示例子中只有两个连接：终端与新无线接入网络的接入网设备之间的连接，以及终端经LTE网络的接入网设备与新无线接入网络的接入网设备之间的连接。当然终端也可以通过LTE网络的接入网设备建立更多的连接。
在本实施例中，LTE eNB为锚基站或主基站(MeNB，master eNB)，NR gNB为辅基站(SgNB，Secondary gNB)正在进行以LTE eNB为锚点的多链接的数据传输。
多链接的数据传输可以通过LTE eNB的PDCP协议层也可以通过LTE eNB的RLC协议层分流，本实施例并不限定。
如图17所示，为本发明另一实施例的一种多链接通信方法的流程示意图，本实施例中，LTE eNB为锚基站或主基站，NR gNB为辅基站，主要如下所述。
步骤1701，LTE eNB向NR gNB发起增加请求流程，触发进行多链接过程。
多链接过程可以由LTE eNB作为MeNB向NR gNB即辅基站(SgNB)发起增加请求流程，触发进行LTE-NR的多链接的数据传输(LTE-NR tight interworking)。
增加请求流程类似LTE DC，例如，LTE eNB作为锚基站向辅基站NR gNB发起SgNB addition request请求，所述SgNB addition request请求用于请求NR gNB作为辅基站创建相应的链接资源，所述增加请求消息中包括如下至少一种：数据无线承载相关信息(例如ERAB ID)、安全相关信息(例如秘钥key)、信令承载相关信息(例如，信令无线承载标识(SRB ID，signalling radio bearers identifier))以及对应的隧道终点(TEID)和服务质量(Qos，Quality of Service)等信息。
NR gNB接收到请求消息后，返回响应消息到MeNB，响应消息中包括所接受的数据无线承载相关信息、信令承载相关信息以及对应的隧道终点等，为所述终端预留相应的资源，创建相应的SRB，同时把相关配置信息通过MeNB的RRC消息发送给终端，配置信息中包括如下至少一种：信令无线承载相关配置(SRB ID等)、承载的相关配置(DRB ID等)、RLC配置以及PDCP配置等。
步骤1702，LTE eNB触发执行RRC diversity功能，创建RRC配置信息。
例如，所述RRC diversity功能是指无线资源控制(RRC)多样化，即LTE eNB产生的RRC消息可以分别通过LTE的空口和NR的空口传输到终端，即，LTE eNB产生的所述RRC消息通过LTE的空口传输给终端，以及还可以通过LTE eNB和NR gNB之间的接口传输给NR gNB，然后再由NR gNB传输给终端。LTE eNB触发执行RRC diversity功能，LTE eNB创建的RRC配置信息。
步骤1703-1705，LTE eNB分别通过LTE eNB和NR gNB将所述RRC配置信息发给终端。
例如，LTE eNB分别通过LTE eNB和NR gNB将所述RRC配置信息发给终端。
RRC diversity的配置可以在SgNB增加流程中包括，通过分裂SRB(split SRB)的方式，例如信令承载相关信息(SRB ID)，在增加请求消息中增加所要split的SRB的相关信息，NR gNB收到请求消息后预留资源，创建相应的SRB。NR gNB在响应消息中把SRB的配置信息通过LTE eNB的RRC消息下发给终端。
步骤1706，NR gNB触发direct RRC message功能。
direct RRC message功能是指NR gNB作为辅基站时直接生成RRC消息通过NR空口传输到终端，触发NR gNB的direct RRC message功能主要通过如下两种方式实现。
方式一：LTE eNB确定NR gNB是否具有direct RRC功能。
如果LTE eNB确定NR gNB具有direct RRC功能，NR gNB将上行授权(UL grant)信息通过NR gNB与LTE eNB之间的接口发送给LTE eNB，然后由LTE eNB通过LTE空口将LTE eNB产生的RRC消息发送给终端，并指示终端向NR gNB进行RRC连接建立，所述终端根据指示向NR gNB发起RRC连接建立请求，然后终端和NR gNB进行RRC连接建立。
例如，NR gNB通过增加请求响应(addition request ack)消息携带UL grant信息发给LTE eNB，也可以是其他消息，本实施例并不限定。
在本发明的另一实施例中，UL grant信息也可以是LTE eNB在addition request消息中向NR gNB请求，本实施例并不限定。
方式二：NR gNB确定其是否具有direct RRC功能
如果NR gNB确定NR gNB具有direct RRC功能，NR gNB向终端发送的随机接入消息2中携带UL grant信息，指示终端向NR gNB进行RRC连接建立，NR gNB不需要通过LTE eNB将所述UL grant信息发送给终端，所述终端根据指示向NR gNB发起RRC连接建立请求，然后终端和NR gNB进行RRC连接建立。
其中，终端和NR的gNB进行RRC连接建立方式类似现有LTE的RRC连接建立方式，本发明不再赘述。
步骤1707，NR gNB配置direct RRC message的SRB信令。
在SgNB addition之后，当NR gNB有配置更改需求(例如承载需要修改或释放)的时候触发创建SRB，SRB配置包括PDCP配置(PDCP config)、RLC配置(RLC config(可选))等，SRB配置的传输方式可以如下所述。
方式一：如果split SRB(RRC diversity)已经在SgNB addition过程中配置，NR gNB直接使用split SRB传输RRC消息到终端。
方式二：NR gNB通过默认承载(SRB0)传输RRC消息到终端，其中，终端和NR gNB之间的SRB0在随机接入的时候已经建立。
方式三：NR gNB将所述SRB配置发送给LTE eNB，通过LTE eNB的RRC消息将所述SRB配置发送给终端。
步骤1708，NR gNB将RRC消息发送给终端。
可选的，所述NR gNB发送给终端的RRC消息包括LTE eNB RRC实体产生的RRC消息和NR gNB RRC实体产生的RRC消息，如果NR gNB需要将LTE eNB RRC实体产生的RRC消息和NR gNB RRC实体产生的RRC消息传输给终端，NR gNB可以对产生的RRC消息的目标RRC实体进行指示。可选的，所述NR gNB发送给终端的RRC 消息也可以是NR gNB从LTE eNB接收的LTE eNB RRC实体产生的RRC diversity的RRC消息。
可选的，所述NR gNB发送给终端的RRC消息也可以是NR gNB的RRC实体产生的direct RRC消息。
可选的，所述RRC消息包括NR gNB从LTE eNB接收的RRC diversity的RRC消息和NR gNB自己的direct RRC消息，NR gNB产生的RRC消息的目标RRC实体进行指示方式如下所述。
方式一：在承载RRC消息的PDCP报头或RLC报头或新增适配层包括指示信息，用于指示产生RRC消息的目标RRC实体。
方式二：NR gNB把LTE eNB RRC实体产生的RRC消息封装在NR的RRC消息的RRC容器(RRC container)中，通过NR gNB所创建的SRB传输给终端。
方式三：LTE RRC消息和NR RRC消息在NR gNB传输给终端时采用不同的逻辑信道传输，例如，NR gNB创建了两个SRB，一个SRB用于传输LTE eNB RRC实体产生的RRC消息，另一个SRB用于传输NR gNB的RRC实体产生的消息。
步骤1709，终端的NR模块接收到SRB传输的RRC信令消息后，区分产生RRC消息的目标RRC实体，是LTE eNB产生的还是NR gNB产生的。
根据RRC消息的发送方式不同，终端区分RRC消息的目标RRC实体，是LTE eNB产生的还是NR gNB产生的的方式也不同，主要如下所述。
区分方式1：在承载RRC消息的PDCP报头或RLC报头或新增适配层包括指示信息用于指示产生RRC消息的目标RRC实体，主要如下所述。
Option1：承载RRC消息的PDCP报头包括的指示信息指示产生RRC消息的目标RRC实体
对于RRC diversity功能，LTE RRC实体产生的RRC消息通过LTE的PDCP层处理后，传输到NR的RLC层处理，然后再分别通过NR的MAC层、PHY层处理后通过NR的空口发送到终端。其中，LTE PDCP层处理时在LTE PDCP报头中增加一个指示信息，用于区别该RRC消息中的消息来源是LTE的RRC实体产生的。所述指示信息可选，如果directly RRC功能执行时，NR PDCP报头中已经增加了指示信息，这里LTE PDCP的指示信息也可不添加。
对于directly RRC功能，NR的RRC实体产生的RRC消息通过NR的PDCP层处理后，传输到NR的RLC层处理，然后再分别通过NR的MAC层、PHY层处理后通过NR的空口发送到终端。其中，NR PDCP层处理时在PDCP报头中增加一个指示信息，用于区别该RRC消息中的消息来源是NR的RRC实体产生的。所述指示信息可选，如果RRC diversity功能执行时，LTE PDCP报头中已经增加了指示信息，这里NR PDCP的指示信息也可不添加。
例如，指示信息可以通过LTE PDCP报头中的空闲字段携带，例如C/D域字段携带，或者在LTE PDCP报头中新增加字段携带。
可选的，指示信息与LTE eNB的对应关系需要通知终端，例如可通过LTE eNB的RRC消息携带从LTE空口发给终端。
RRC实体产生RRC消息后，分别通过PDCP、RLC、MAC以及PHY层处理后， 即增加了PDCP报头、RLC报头、MAC报头和PHY报头，通过空口传输到终端。对于RRC diversity功能的执行，LTE eNB RRC实体产生的RRC消息，首先通过LTE的PDCP层处理，加了LTE PDCP报头，然后再传输到NR的RLC层处理，再加NR RLC报头，再走到NR的MAC层处理，再加NR MAC头，再走到NR的PHY层处理，再加PHY报头，最后通过NR空口传输到终端，。对于NR gNB可以自己进行directly RRC消息传递的功能的执行，类似的，NR gNB的RRC实体产生的RRC消息，首先通过NR的PDCP层处理，加了NR PDCP报头，然后再传输到NR的RLC层处理，再加NR RLC报头，再走到NR的MAC层处理，再加NR MAC头，再走到NR的PHY层处理，再加PHY报头，最后通过NR空口传输到终端。终端解析的时候按照协议层，首先解析PHY头，然后按照顺序解析MAC、RLC、MAC、PDCP，最后收到RRC消息。
NR gNB传输给终端的RRC消息结构可以如表1所示。
表1
NR PHY NR MAC NR RLC PDCP RRC
NR gNB RRC实体产生的RRC消息通过NR的空口传输到终端，NR gNB在NR gNB的NR PDCP报头中增加一个指示信息，用于指示终端从NR的空口收到的RRC消息来源，即产生RRC消息的目标RRC实体是NR gNB RRC实体，即执行direct RRC功能的消息。
可选的，指示信息与NR gNB的对应关系需要通知终端，例如可通过NR gNB的RRC消息携带从NR空口发给终端。
终端的NR模块收到NR空口传输的RRC消息之后，分别解析PHY报头、MAC报头以及RLC报头后，解析PDCP报头，该PDCP报头既可以是LTE PDCP报头也可以是NR PDCP报头，如果PDCP报头包括的指示信息指示目标RRC实体是LTE eNB的，则将该RRC消息交与终端的LTE模块的PDCP协议层处理，如果PDCP报头指示信息指示的目标RRC实体是NR gNB，则将该RRC消息交与终端的NR模块的PDCP协议层处理。
Option2：承载RRC消息的RLC报头包括的指示信息指示产生RRC消息的目标RRC实体
对于RRC diversity功能，LTE RRC实体产生的RRC消息通过LTE的PDCP层处理后，传输到NR的RLC层处理，然后再分别通过NR的MAC层、PHY层处理后通过NR的空口发送到终端。其中，NR RLC层处理时在NR RLC报头中增加一个指示信息，用于区别该RRC消息中的消息来源是LTE的RRC实体产生的。所述指示信息可选，如果directly RRC功能执行时，NR RLC报头中已经增加了指示信息，这里的指示信息也可不添加。
对于directly RRC功能，NR的RRC实体产生的RRC消息通过NR的PDCP层处理后，传输到NR的RLC层处理，然后再分别通过NR的MAC层、PHY层处理后通过NR的空口发送到终端。其中，NR RLC层处理时在NR RLC报头中增加一个指示信息，用于区别该RRC消息中的消息来源是NR的RRC实体产生的。所述指示信息可选，如 果RRC diversity功能执行时，NR RLC报头中已经增加了指示信息，这里的指示信息也可不添加。
然后NR gNB将LTE eNB RRC实体产生的LTE RRC消息和NR gNB RRC实体产生的RRC消息通过NR空口传输到终端。
终端的NR模块收到NR空口传输的RRC消息之后，分别解析PHY报头、MAC报头，然后解析NR RLC报头，如果RLC报头中指示信息指示目标RRC实体是LTE eNB，则将该RRC消息交与终端的LTE模块的PDCP协议层处理，如果PDCP报头指示信息指示的目标RRC实体是NR gNB，则将该RRC消息交与终端的NR模块的PDCP协议层处理，NR gNB传输给终端的RRC消息结构如表1所示。
如表1格式，RRC实体产生RRC消息后，分别通过PDCP、RLC、MAC以及PHY层处理后，即增加了PDCP报头、RLC报头、MAC报头和PHY报头，通过空口传输到终端。对于RRC diversity功能的执行，LTE eNB RRC实体产生的RRC消息，首先通过LTE的PDCP层处理，加了LTE PDCP报头，然后再传输到NR的RLC层处理，再加NR RLC报头，再走到NR的MAC层处理，再加NR MAC头，再走到NR的PHY层处理，再加PHY报头，最后通过NR空口传输到终端，。对于NR gNB可以自己进行directly RRC消息传递的功能的执行，类似的，NR gNB的RRC实体产生的RRC消息，首先通过NR的PDCP层处理，加了NR PDCP报头，然后再传输到NR的RLC层处理，再加NR RLC报头，再走到NR的MAC层处理，再加NR MAC头，再走到NR的PHY层处理，再加PHY报头，最后通过NR空口传输到终端。终端解析的时候按照协议层，首先解析PHY头，然后按照顺序解析MAC、RLC、MAC、PDCP，最后收到RRC消息。终端在解析过程中通过NR RLC中的指示信息判断RRC消息来源，或者通过PDCP中的指示信息来判断RRC消息的来源。
可选的，指示信息的对应关系需要通知终端，例如指示信息与LTE eNB的对应关系和指示信息与NR gNB的对应关系可通过NR gNB的RRC消息或者其它新增消息携带从NR空口发给终端，本实施例并不限定。
终端收到NR的RRC消息后，通过读取RLC报头的指示信息，如果RLC报头包括的指示信息指示目标RRC实体是LTE eNB，则将该NR的RRC消息交与终端的LTE模块的PDCP协议层处理，如果RLC报头包括的指示信息指示目标RRC实体是NR gNB，则将该NR的RRC消息交与终端的NR模块的PDCP协议层处理。
Option3：新增适配层(adaptation layer)包括的指示信息指示产生RRC消息的目标RRC实体
既可以是LTE eNB新增适配层并在所述适配层携带指示信息，也可以是NR gNB新增适配层并在所述适配层携带指示信息，并实施例并不限定。
如果是LTE eNB新增适配层，新增的适配层增加在LTE eNB的PDCP和RLC层之间，结构如表2所示。
表2
Figure PCTCN2017120219-appb-000001
如果是NR gNB新增适配层，新增的适配层增加在NR gNB的PDCP和RLC层之间，如表格3所示。
表3
Figure PCTCN2017120219-appb-000002
如果适配层增加在LTE eNB侧，那么对于RRC diversity功能，LTE RRC实体产生的RRC消息通过LTE的PDCP层处理后，传输到适配层，通过适配层的处理后，传输到NR的RLC层处理，然后再分别通过NR的MAC层、PHY层处理后通过NR的空口发送到终端。其中，适配层处理时增加一个指示信息在适配层的报头，用于区别该RRC消息中的消息来源是LTE的RRC实体产生的。对于directly RRC功能，NR产生的RRC消息后，在通过各个协议层处理的时候无需增加指示信息。
如果适配层增加在NR的gNB侧，那么对于RRC diversity功能，LTE RRC实体产生的RRC消息通过LTE的PDCP层处理后，传输到适配层，通过适配层的处理后，传输到NR的RLC层处理，然后再分别通过NR的MAC层、PHY层处理后通过NR的空口发送到终端。其中，适配层处理时增加一个指示信息在适配层的报头，用于区别该RRC消息中的消息来源是LTE的RRC实体产生的。其中，适配层处理时在适配层的报头中可以增加指示信息，用于指示该RRC消息是LTE RRC实体产生的；对于directly RRC功能，NR的RRC实体产生的RRC消息通过NR的PDCP层处理后，传输到适配层，经过适配层处理后，传输到NR的RLC层处理，然后再分别通过NR的MAC层、PHY层处理后通过NR的空口发送到终端。其中，在适配层处理时，在适配层报头中增加一个指示信息，用于区别该RRC消息中的消息来源是NR的RRC实体产生的。所述指示信息可选，如果RRC diversity功能执行时，适配层报头中已经增加了指示信息，这里的指示信息也可不添加。
可选的，指示信息的对应关系需要通知终端，指示信息与LTE eNB的对应关系可通过LTE eNB的RRC消息从LTE空口发给终端，指示信息与NR gNB的对应关系可通过NR gNB的RRC消息从NR空口发给终端。
终端收到NR的RRC消息后，分别解析PHY报头、MAC报头以及RLC报头后，解析新增适配层报头后，如果新增适配层报头包括的指示信息指示目标RRC实体是LTE eNB，则将RRC消息交与终端的LTE模块的PDCP协议层处理，如果新增适配层包括的指示信息指示目标RRC实体是NR gNB，则将RRC消息交与终端的NR模块的PDCP协议层处理。
区分方式2：如果LTE的RRC消息是封装在NR空口的RRC容器(RRC container)中且通过NR gNB所创建的SRB传输给终端
NR gNB通过RRC container封装LTE RRC实体产生的RRC消息且通过NR的空口传输给终端，终端收到NR的RRC消息后，识别RRC消息中container的内容后，如果识别是RRC container中的是LTE RRC实体产生的RRC消息，则确定目标RRC实体是LTE eNB，则将该RRC消息交与终端的LTE模块的PDCP协议层处理。
区分方式3：如果LTE RRC消息和NR RRC消息在NR gNB传输给终端时采用不同的逻辑信道传输
本方式下，即NR gNB建立了两个不同的SRB，SRB的配置信息和对应产生RRC消息的RRC实体的对应关系需要提前发送给终端，例如NR gNB RRC实体生成的RRC消息使用其中的SRB通过NR空口发送给终端，LTE eNB的RRC实体生成的RRC消息使用另一个SRB通过NR空口发送给终端，终端通过NR空口收到RRC消息后，根据不同的SRB配置信息识别所接收到的RRC消息属于LTE eNB的RRC实体还是NR gNB的RRC实体。所述SRB的配置信息的发送方法可以在NR gNB增加过程中进行，如NR gNB创建不同的SRB配置，并把相关配置信息通过SeNB addition request ack消息发送给LTE eNB，LTE eNB通过LTE eNB的RRC消息发送给终端，从而完成两个SRB的配置。可选的SRB的配置信息也可以通过其他方式由LTE eNB或者NR gNB发送给UE，如新的RRC消息，本发明不限定。
步骤1710，终端的NR模块根据指示信息判断出RRC消息来源后，将所收到的RRC消息交于对应的RRC实体进行处理。
例如，如果是LTE的RRC实体产生的RRC消息，那么终端接收的RRC消息就交于终端的LTE模块的PDCP协议层进行处理，如果是NR gNB的RRC实体产生的RRC消息，终端接收的RRC消息就交于终端的NR模块的PDCP进行处理。
在本发明的另一实施例中，如果终端接收的数据在RLC层分流，那么指示信息可以加在RLC层或者MAC层或者新增的适配层(适配层增加在NR gNB的RLC和MAC协议层之间)。
上述实施例描述的是LTE eNB为锚基站，NR gNB为辅基站的具体过程，在上述实施例的基础上，如果NR的NR gNB作为辅基站时的direct RRC消息传输也具有RRC diversity功能，即direct RRC消息同时通过NR gNB和LTE eNB传输到终端，由于LTE eNB到终端还有LTE的RRC消息，两条消息可以通过一个SRB传输到终端，那么相应的终端的LTE模块收到一条SRB承载的RRC消息，如何区分RRC消息来源方案同上述实施例类似。
在本发明的另一实施例中，在NR的高低频场景下，即NR的低频基站站作为锚基站(MgNB)，NR的高频基站作为辅基站(SgNB)，如何区分消息来源方案也同上述实施例类似。
在实现过程中，上述方法的至少一个步骤可以通过处理器中的硬件的集成逻辑电路完成，或该集成逻辑电路可在软件形式的指令驱动下完成该至少一个步骤。因此，通信装置可以是个芯片或者芯片组。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应理解，在本申请的各个实施例中，上述各过程的序号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，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究 竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，该单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
该作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
该功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例该方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上该，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本申请的保护范围应以该权利要求的保护范围为准。

Claims (28)

  1. 一种多链接通信方法，其特征在于，包括：
    辅基站接收锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
    所述辅基站将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端的空口发送给所述终端，其中，PDCP报头或RLC报头或新增的适配层携带指示信息，用于指示产生RRC消息的目标RRC实体；
    其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
  2. 如权利要求1所述的方法，其特征在于，所述指示信息通过所述PDCP报头中的空闲字段携带，或者在PDCP报头中新增加字段携带。
  3. 如权利要求1所述的方法，其特征在于，所述指示信息包括第一指示信息和第二指示信息，其中，所述第一指示信息用于指示所述目标RRC实体为所述锚基站的RRC实体，所述第二指示信息用于指示所述目标RRC实体为所述辅基站的RRC实体。
  4. 如权利要求3所述的方法，其特征在于，所述第一指示信息由所述锚基站加入在所述锚基站的PDCP报头中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述第二指示信息由所述辅基站加入在所述辅基站的PDCP报头中。
  5. 如权利要求3所述的方法，其特征在于，所述第一指示信息和所述第二指示信息由所述辅基站加入在所述辅基站的RLC报头中。
  6. 如权利要求5所述的方法，其特征在于，所述方法还包括：
    所述辅基站将所述第一指示信息与所述锚基站的RRC实体的对应关系和所述第二指示信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
  7. 如权利要求3所述的方法，其特征在于，所述第一指示信息由所述锚基站加入在所述锚基站的新增适配层中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述第二指示信息由所述辅基站加入在所述辅基站的新增适配层中。
  8. 如权利要求4或7所述的方法，其特征在于，所述第一指示信息与所述锚基站的RRC实体的对应关系由所述锚基站通过其与终端的空口发送给所述终端，所述方法还包括：
    所述辅基站将所述第二指示信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
  9. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    所述辅基站将上行授权UL grant信息通过所述锚基站与所述辅基站之间的接口发送给所述锚基站，以便所述锚基站将所述锚基站的RRC实体产生的RRC消息发送给终端并由所述锚基站指示所述终端向所述辅基站进行RRC连接建立。
  10. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    所述辅基站向所述终端发送的随机接入响应消息中携带上行授权UL grant信息，指示所述终端向所述辅基站进行RRC连接建立。
  11. 如权利要求1所述的方法，其特征在于，所述辅基站具有传输锚基站的RRC 实体产生的RRC消息的能力和直传所述辅基站的RRC实体产生的RRC消息的能力。
  12. 一种多链接通信方法，其特征在于，包括：
    辅基站接收锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
    所述辅基站将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端的空口发送给所述终端，其中，所述第一RRC消息由所述辅基站封装在RRC容器RRC container中，以便当所述终端从所述RRC container中解析出所述第一RRC消息时，确定所述第一RRC消息由所述锚基站的RRC实体产生；
    其中，所述锚基站和所述辅基站采用不同的无线接入技术。
  13. 一种多链接通信方法，其特征在于，包括：
    辅基站接收锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
    所述辅基站将所述第一RRC消息和所述第二RRC消息通过所述辅基站与终端空口的两个不同的逻辑信道传输给所述终端，以便所述终端根据不同逻辑信道区分产生RRC消息的目标RRC实体；
    其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
  14. 如权利要求11所述的方法，其特征在于，所述方法还包括：
    所述辅基站建立对应所述两个不同的逻辑信道的两个不同的SRB；
    所述辅基站将所述两个不同的SRB的配置信息和对应产生RRC消息的RRC实体的对应关系发送给所述终端。
  15. 如权利要求11所述的方法，其特征在于，其中，所述两个不同的SRB包括第一SRB和第二SRB，其中，所述第一SRB用于传输所述第一RRC消息，所述第二SRB用于传输所述第二RRC消息，
    所述辅基站将所述两个不同的SRB的配置信息和对应产生RRC消息的RRC实体的对应关系发送给所述终端具体包括：
    所述辅基站将所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系通过所述锚基站和所述辅基站之间的接口发送给所述锚基站，由所述锚基站通过其与所述终端的空口发送给所述终端；
    所述辅基站将所述第二SRB的配置信息与所述辅基站的RRC实体的对应关系通过所述辅基站与所述终端的空口发送给所述终端。
  16. 一种多链接通信方法，其特征在于，包括：
    终端通过辅基站与所述终端的空口接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
    所述终端解析所述RRC消息时从PDCP报头或RLC报头或新增的适配层中获得指示信息，所述指示信息用于指示产生RRC消息的目标RRC实体；
    所述终端根据所述指示信息判断出产生RRC消息的目标RRC实体后，将所收到的RRC消息交于对应的RRC模块进行处理；
    其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
  17. 如权利要求16所述的方法，其特征在于，所述指示信息通过所述PDCP报头中的空闲字段携带，或者在PDCP报头中新增加字段携带。
  18. 如权利要求16所述的方法，其特征在于，所述指示信息包括第一指示信息和第二指示信息，其中，所述第一指示信息用于指示所述目标RRC实体为所述锚基站的RRC实体，所述第二指示信息用于指示所述目标RRC实体为所述辅基站的RRC实体。
  19. 如权利要求18所述的方法，其特征在于，所述第一指示信息由所述锚基站加入在所述锚基站的PDCP报头中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站；所述第二指示信息由所述辅基站加入在所述辅基站的PDCP报头中。
  20. 如权利要求18所述的方法，其特征在于，所述第一指示信息和所述第二指示信息由所述辅基站加入在所述辅基站的RLC报头中。
  21. 如权利要求20所述的方法，其特征在于，所述方法还包括：
    所述终端通过所述辅基站与所述终端的空口接收所述辅基站发送的所述第一指示信息与所述锚基站的RRC实体的对应关系和所述第二指示信息与所述辅基站的RRC实体的对应关系。
  22. 如权利要求18所述的方法，其特征在于，所述第一指示信息由所述锚基站加入在所述锚基站的新增适配层中，并通过所述锚基站和所述辅基站之间的接口发送给所述辅基站，然后再由所述辅基站通过其与所述终端的空口发送给所述终端；所述第二指示信息由所述辅基站加入在所述辅基站的新增适配层中，然后再由所述辅基站通过其与所述终端的空口发送给所述终端。
  23. 如权利要求19或22所述的方法，其特征在于，所述第一指示信息与所述锚基站的RRC实体的对应关系由所述锚基站通过其与终端的空口发送给所述终端，所述方法还包括：
    所述终端通过所述辅基站与所述终端的空口接收所述辅基站发送的所述第二指示信息与所述辅基站的RRC实体的对应关系。
  24. 如权利要求16所述的方法，其特征在于，所述辅基站具有传输锚基站的RRC实体产生的RRC消息的能力和直传所述辅基站的RRC实体产生的RRC消息的能力。
  25. 一种多链接通信方法，其特征在于，包括：
    终端通过辅基站与所述终端的空口接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的RRC实体产生第二RRC消息；
    所述终端解析所述RRC消息时从RRC容器RRC container中解析出RRC消息，则确定所述RRC container中解析出的RRC消息为所述锚基站的RRC实体产生的所述第一RRC消息；
    其中，所述锚基站和所述辅基站采用不同的无线接入技术。
  26. 一种多链接通信方法，其特征在于，包括：
    终端通过辅基站与所述终端的空口的不同逻辑信道接收所述辅基站发送的RRC消息，其中所述RRC消息包括锚基站的RRC实体产生的第一RRC消息和所述辅基站的 RRC实体产生第二RRC消息；
    所述终端根据不同逻辑信道区分产生RRC消息的目标RRC实体；
    其中，所述目标RRC实体为所述锚基站的RRC实体或所述辅基站的RRC实体，所述锚基站和所述辅基站采用不同的无线接入技术。
  27. 如权利要求26所述的方法，其特征在于，所述方法还包括：
    所述终端接收两个不同的SRB的配置信息，其中，两个不同的SRB的配置信息对应所述两个不同的逻辑信道，且包括SRB的配置信息和对应产生RRC消息的RRC实体的对应关系。
  28. 如权利要求27所述的方法，其特征在于，其中，所述两个不同的SRB包括第一SRB和第二SRB，其中，所述第一SRB用于传输所述第一RRC消息，所述第二SRB用于传输所述第二RRC消息，
    所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系由所述辅基站通过所述锚基站和所述辅基站之间的接口发送给所述锚基站，所述方法还包括：
    所述终端接收由所述锚基站通过其与所述终端的空口发送的所述第一SRB的配置信息与所述锚基站的RRC实体的对应关系；
    所述终端接收由所述辅基站通过所述辅基站与所述终端的空口发送的所述第二SRB的配置信息与所述辅基站的RRC实体的对应关系。
PCT/CN2017/120219 2017-01-06 2017-12-29 多链接通信方法、设备和终端 WO2018127018A1 (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2019536837A JP6888099B2 (ja) 2017-01-06 2017-12-29 多数接続通信方法、装置、及び端末
KR1020197022297A KR102337091B1 (ko) 2017-01-06 2017-12-29 다중 접속 통신 방법, 장치 및 단말
BR112019013801A BR112019013801A2 (pt) 2017-01-06 2017-12-29 método de comunicação de múltipla conectividade, aparelho, estação de base, terminal e sistema de comunicação
EP17890433.0A EP3565287B1 (en) 2017-01-06 2017-12-29 Multi-link communication method and device, and terminal
US16/504,130 US10772146B2 (en) 2017-01-06 2019-07-05 Multi-connectivity communication method, device, and terminal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710011355.4 2017-01-06
CN201710011355.4A CN108282448A (zh) 2017-01-06 2017-01-06 多链接通信方法、设备和终端

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/504,130 Continuation US10772146B2 (en) 2017-01-06 2019-07-05 Multi-connectivity communication method, device, and terminal

Publications (1)

Publication Number Publication Date
WO2018127018A1 true WO2018127018A1 (zh) 2018-07-12

Family

ID=62789187

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/120219 WO2018127018A1 (zh) 2017-01-06 2017-12-29 多链接通信方法、设备和终端

Country Status (7)

Country Link
US (1) US10772146B2 (zh)
EP (1) EP3565287B1 (zh)
JP (1) JP6888099B2 (zh)
KR (1) KR102337091B1 (zh)
CN (2) CN110505714B (zh)
BR (1) BR112019013801A2 (zh)
WO (1) WO2018127018A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018171881A1 (en) * 2017-03-22 2018-09-27 Nokia Technologies Oy Data forwarding support
US10939501B2 (en) * 2017-08-02 2021-03-02 Intel IP Corporation Apparatus, system and method to implement reserved resources for forward compatibility in new radio (NR) networks
EP4297514A1 (en) * 2017-11-15 2023-12-27 Mitsubishi Electric Corporation Communication system, communication terminal device, and communication node
KR20210033005A (ko) * 2018-07-19 2021-03-25 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 디바이스투디바이스(d2d) 통신의 방법 및 단말기 디바이스
US11706670B2 (en) * 2018-08-06 2023-07-18 Google Llc Transferring a radio bearer configuration
CN111083730B (zh) * 2018-10-19 2023-01-31 中兴通讯股份有限公司 一种数据处理方法及装置、网络设备
JP7241089B2 (ja) * 2018-10-31 2023-03-16 株式会社Ｎｔｔドコモ 端末、基地局装置、通信方法、及び無線通信システム
US11032729B1 (en) * 2019-08-20 2021-06-08 Sprint Communications Company L.P. Simultaneous wireless communication service over fifth generation new radio (5GNR) and long term evolution (LTE)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104581680A (zh) * 2013-10-23 2015-04-29 普天信息技术研究院有限公司 一种双连接用户标识的指示方法
CN106165488A (zh) * 2016-06-30 2016-11-23 北京小米移动软件有限公司 Rrc连接建立方法及设备
US20160345316A1 (en) * 2015-05-18 2016-11-24 Telefonaktiebolaget LM Erisson (pub) Time advance for dual connectivity

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103338518B (zh) * 2012-12-31 2016-12-28 上海华为技术有限公司 一种发送rrc信令的方法、基站和系统
WO2015018094A1 (zh) * 2013-08-09 2015-02-12 华为技术有限公司 一种消息传输方法及设备
WO2015067823A1 (en) * 2013-11-11 2015-05-14 Telefonaktiebolaget L M Ericsson (Publ) Discarding a duplicate protocol data unit associated with a data transmission via a first signaling radio bearer or a second signaling radio bearer
CN106717094A (zh) * 2015-05-15 2017-05-24 株式会社Ntt都科摩 用户装置以及基站

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104581680A (zh) * 2013-10-23 2015-04-29 普天信息技术研究院有限公司 一种双连接用户标识的指示方法
US20160345316A1 (en) * 2015-05-18 2016-11-24 Telefonaktiebolaget LM Erisson (pub) Time advance for dual connectivity
CN106165488A (zh) * 2016-06-30 2016-11-23 北京小米移动软件有限公司 Rrc连接建立方法及设备

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
See also references of EP3565287A4
ZTE: "Consideration on the Dual RRC for LTE/NR tight interworking", 3GPP TSG-RAN2 MEETING #94, R2-163739, 13 May 2016 (2016-05-13), XP051095715 *
ZTE; ZTE MICROELECTRONICS: "Consideration on the transmission of NR RRC Message in LTE/NR tight interworking", 3GPP TSG RAN WG2 MEETING #95BIS, R2-166340, 14 October 2016 (2016-10-14), XP051150912 *

Also Published As

Publication number Publication date
EP3565287A1 (en) 2019-11-06
JP6888099B2 (ja) 2021-06-16
KR20190100362A (ko) 2019-08-28
CN110505714A (zh) 2019-11-26
US20190335521A1 (en) 2019-10-31
CN110505714B (zh) 2021-01-29
EP3565287A4 (en) 2020-05-27
BR112019013801A2 (pt) 2020-01-21
JP2020505812A (ja) 2020-02-20
US10772146B2 (en) 2020-09-08
CN108282448A (zh) 2018-07-13
EP3565287B1 (en) 2022-03-16
KR102337091B1 (ko) 2021-12-07

Similar Documents

Publication Publication Date Title
US10785824B2 (en) Information processing method and related apparatus
US11917450B2 (en) Data transmission method and data transmission apparatus
WO2018127018A1 (zh) 多链接通信方法、设备和终端
US11770865B2 (en) Relay communication method and relay communications apparatus and system
US10412650B2 (en) Data transmission method, apparatus and system
US10869342B2 (en) Radio bearer establishment method and base station
US20190313262A1 (en) Handling QoS Flow without a Mapping Data Radio Bearer
WO2019214729A1 (zh) 数据处理的方法和设备
US20220174575A1 (en) Data transmission method, terminal device, and network device
US10575209B2 (en) Method and device for data shunting
WO2015165051A1 (zh) 数据传输方法及设备
WO2017219355A1 (zh) 多连接通信方法和设备
CN112637963B (zh) 多址接入协议数据单元会话释放的方法及其用户设备
US20230164640A1 (en) Communication method and communication apparatus
WO2013170673A1 (zh) 一种接入方法、基站、接入点和用户设备
RU2757161C1 (ru) Передача обслуживания между технологиями радиодоступа
US10701591B2 (en) Data transmission method, apparatus, and system
US20230254729A1 (en) Migration method and apparatus for iab-node
WO2022082691A1 (zh) Iab网络的rlf恢复方法、装置以及相关设备
WO2022150964A1 (zh) 切换方法、网络设备和网络功能实体

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17890433

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019536837

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112019013801

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 20197022297

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2017890433

Country of ref document: EP

Effective date: 20190801

ENP Entry into the national phase

Ref document number: 112019013801

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20190703