CN106162730B

CN106162730B - A kind of method of communication, equipment and system

Info

Publication number: CN106162730B
Application number: CN201610545431.5A
Authority: CN
Inventors: 帅扬来; 周彧
Original assignee: Shanghai Huawei Technologies Co Ltd
Current assignee: Shanghai Huawei Technologies Co Ltd
Priority date: 2016-07-12
Filing date: 2016-07-12
Publication date: 2019-11-15
Anticipated expiration: 2036-07-12
Also published as: CN106162730A

Abstract

The embodiment of the invention discloses a kind of methods of communication, for defining the process of the Signalling exchange between center cell and distribution unit.The method comprise the steps that the distribution unit receives the wireless link request that the center cell is sent, the wireless link request includes establishing the resource information of Radio Link；The distribution unit establishes Radio Link according to the resource information for establishing Radio Link；The distribution unit sends the wireless link response to the center cell.

Description

A kind of method of communication, equipment and system

Technical field

The present invention relates to the communications field more particularly to a kind of methods of communication, equipment and system.

Background technique

Traditional telecommunication network, especially wireless communication networks, such as global system for mobile communications (Global System for Mobile Communication, GSM), Universal Mobile Communication System (Universal Mobile Telecommunications System, UMTS) etc., have the advantages that type of business is abundant, network control capabilities are strong, but by The factors such as, transmission environment limited in wireless communication system frequency resource be severe, can not provide high access rate, and emerging width Broad-band wireless access technology compensates for these disadvantages well.With WLAN (Wireless Local Area Networks, WLAN) and worldwide interoperability for microwave accesses (Worldwide Interoperability for Microwave Access, WiMAX the broadband wireless access business of high-speed) can be provided for the wireless access wide band technology of representative, and support it is nomadic and Mobile application substantially increases the access capability of wireless communication.Mobile communications network is with merging for wireless access wide band technology The Evolution Tendency of telecommunication network from now on.

The principle of tunneling technique is, by the protocol package transmitted two end-point entities between tunnel with another agreement into Row encapsulation, realizes the safe transmission and routing of data between two end-point entities.For effective management and use Internet resources, electricity Communication network establishes complete network management and controlling mechanism.When terminal exits network, need to distribute to the money of the user Source discharges in time, including wireless channel, carrying, various tunnels and information of storage etc..

Some network support user equipmenies access one or more packets data service, and Packet data service passes through access point Name (Access Point Name, APN) identifies, network side according to APN establish user to corresponding data gateway connectivity, Data gateway establishes the connectivity to corresponding PDN according to APN again.In this case, user needs the Packet data service accessed APN be possible to network side be pre-configured, it is also possible to from user equipment to network side provide.

Wireless access network (Radio Access Network, RAN) evolution can be divided into center cell (Central Unit, CU) and distribution unit (Distributed Unit, DU)；User is linked into core net by CU and DU, carries out business visit It asks；But specific CU/DU includes that function and protocol stack of the interface and process do not define.The shortcomings that prior art, does not have There is the network architecture of clear next generation network, also without information such as the functions of clear CU and DU.

Summary of the invention

The embodiment of the invention provides a kind of method of communication, center cell, distribution unit and communication systems.

First aspect of the embodiment of the present invention provides a kind of method of communication, and this method is applied to communication system, the communication system System includes core net, center cell, distribution unit and user equipment, comprising: the distribution unit receives center cell transmission Wireless link request, wireless link request include establishing the resource information of Radio Link；The distribution unit according to The resource information for establishing Radio Link establishes Radio Link；The distribution unit sends the wireless link to the center cell Response.

In embodiments of the present invention, the process for establishing Radio Link between distribution unit and center cell is defined, it is complete Transmission at the foundation of Radio Link, for data or signaling.

Optionally, in some embodiments of the invention, the resource information for establishing Radio Link include about signaling without The packet data polymerized agreement PDCP information of line carrying SRB；The Radio Link that the distribution unit receives center cell transmission is built Vertical request, comprising: the distribution unit receives the signaling wireless link request of center cell transmission；

The distribution unit establishes the resource information of Radio Link according to this, establishes Radio Link, comprising: the distribution unit root According to the packet data polymerized agreement PDCP information about Signaling Radio Bearer SRB, the wireless spread-spectrum technology RLC of the distribution unit Information and media access control MAC information, establish signaling Radio Link；

The distribution unit sends wireless link response to the center cell, comprising: the distribution unit is to the center Unit sends signaling wireless link response, and signaling wireless link response includes that wireless spread-spectrum technology RLC believes Breath or the media access control MAC information.

In embodiments of the present invention, the process for establishing Radio Link between distribution unit and center cell is defined, it is complete Transmission at the foundation of signaling Radio Link, for signaling.

Optionally, in some embodiments of the invention, the resource information for establishing Radio Link include about data without The packet data polymerized agreement PDCP information of line carrying DRB；The Radio Link that the distribution unit receives center cell transmission is built Vertical request, comprising: the distribution unit receives the data wireless link request of center cell transmission；

The distribution unit establishes the resource information of Radio Link according to this, establishes Radio Link, comprising: the distribution unit root According to the packet data polymerized agreement PDCP information about Data Radio Bearer DRB, the wireless spread-spectrum technology RLC of the distribution unit Information and media access control MAC information, establish data Radio Link；

The distribution unit sends wireless link response to the center cell, comprising: the distribution unit is to the center Unit sends data wireless link response, the data wirelessly establishes response including wireless spread-spectrum technology RLC information or The media access control MAC information.

In embodiments of the present invention, the process for establishing Radio Link between distribution unit and center cell is defined, it is complete Transmission at the foundation of data Radio Link, for data.

Optionally, in some embodiments of the invention, this method further include: the distribution unit passes through ascending wireless resource RRC transparent transmission message is controlled, first object information is sent to the center cell, which is that the user equipment is sent 's.

In embodiments of the present invention, the ascending wireless resource control transparent transmission defined between distribution unit and center cell disappears The process of breath.

Optionally, in some embodiments of the invention, this method further include: the distribution unit passes through downlink RRC transparent transmission Message receives the second target information of center cell transmission.

In embodiments of the present invention, the downlink radio resource control transparent transmission defined between distribution unit and center cell disappears The process of breath.

Optionally, in some embodiments of the invention, the distribution unit is by uplink RRC transparent transmission message, by the first mesh Information is marked to send to the center cell, comprising: the distribution unit by the first uplink RRC transparent transmission message, by RRC connection request to The center cell is sent；

The distribution unit receives the second target information of center cell transmission by downlink RRC transparent transmission message, comprising: The distribution unit receives the RRC connection configuration of center cell transmission by the first downlink RRC transparent transmission message；

The distribution unit is sent by uplink RRC transparent transmission message, by first object information to the center cell, further includes: The distribution unit is sent the completion information of RRC connection configuration to the center cell by the second uplink RRC transparent transmission message, should The completion information of RRC connection configuration includes attach request.

Optionally, in some embodiments of the invention, which is received in this by downlink RRC transparent transmission message The second target information that heart unit is sent, comprising: the distribution unit receives center list by the second downlink RRC transparent transmission message The safe mode command that member is sent；

The distribution unit is sent by uplink RRC transparent transmission message, by first object information to the center cell, comprising: should Distribution unit is sent the completion information of the safe mode command to the center cell by third uplink RRC transparent transmission message.

Optionally, in some embodiments of the invention, which is received in this by downlink RRC transparent transmission message The second target information that heart unit is sent, comprising: the distribution unit receives the center by the third downlink RRC transparent transmission message The information for the RRC connection reconfiguration that unit is sent；

The distribution unit is sent by uplink RRC transparent transmission message, by first object information to the center cell, comprising: should Distribution unit is sent the completion information of the RRC connection reconfiguration to the center cell by the 4th uplink RRC transparent transmission message.

Optionally, in some embodiments of the invention, this method further include: the distribution unit is sent to the center cell Release radio resource request, Release radio resource request include release cause.

Optionally, in some embodiments of the invention, which is received in this by downlink RRC transparent transmission message The second target information that heart unit is sent, comprising: the distribution unit receives center list by the 4th downlink RRC transparent transmission message The information for the RRC Connection Release that member is sent.

Optionally, in some embodiments of the invention, this method further include: the distribution unit receives center cell hair The Release radio resource order sent, the Release radio resource order include the release cause；The distribution unit is to the center cell Send the information of Release radio resource completion.

In embodiments of the present invention, the process of Release radio resource before distribution unit and center cell is defined, is completed The release of radio resource.

Optionally, in some embodiments of the invention, which further includes target's center's unit and target distribution Unit, this method further include: the distribution unit is sent out by uplink RRC transparent transmission message, by first object information to the center cell It send, comprising: the distribution unit sends measurement report, the measurement report by the 5th uplink RRC transparent transmission message, to the center cell For the measurement report information of the user equipment.

Optionally, in some embodiments of the invention, which is used to manage the non-reality of the website of multiple standards When control section, the center cell include access polymer layer control plane, access polymerization layer user surface and for user wirelessly connecing Enter a layer control plane；

The access polymer layer control plane, the control plane of the website for managing multiple standard；

The access polymerize layer user surface, the user face of the website for managing multiple standard；

This is directed to the radio access layer control plane of user, the management for the wireless connection for user；

The distribution unit is used to manage the real-time control part of the website of multiple standards, which includes being directed to cell Radio access layer control plane and wireless access layer user surface；

This is directed to the radio access layer control plane of cell, for being directed to the management of cell；

The wireless access layer user surface, transmission and scheduling Collaborative Control for data；

Wherein, the interface between the center cell and the distribution unit is first interface, which includes control plane First interface and user face first interface；

The protocol stack of the control plane first interface, based on agreement include the first interface application protocol and flow control pass Defeated agreement, for the signalling between the center cell and the distribution unit；

The protocol stack of the user face first interface, based on agreement include general packet wireless service tunnel protocol, transmission Control protocol and User Datagram Protocol, for the data transmission between the center cell and the distribution unit；

Interface between first center cell and the second center cell is second interface, which includes control plane the Two interfaces and user face second interface；

The protocol stack of the control plane second interface, based on agreement include the second interface application protocol and the flow control Transport protocol, for the signalling between first center cell and second center cell；

The protocol stack of the user face second interface, based on agreement include the general packet wireless service tunnel protocol and should User Datagram Protocol, for the data transmission between first center cell and second center cell；

Interface between the center cell and the core net is third interface, which includes control plane third interface With user face third interface；

The protocol stack of the control plane third interface, based on agreement include the third interface application protocol and the flow control Transport protocol, for the signalling between the center cell and the core net；

The protocol stack of the user face third interface, based on agreement include the general packet wireless service tunnel protocol and should User Datagram Protocol, for the data transmission between the center cell and the core net.

In embodiments of the present invention, a further instruction has been done to the protocol stack of each interface, has been convenient for communication process In data transmission.

Optionally, in some embodiments of the invention, which includes in control plane center cell and user face Heart unit；The control plane center cell is used to manage the control plane of the center cell, including the access polymer layer control plane and should For the radio access layer control plane of user；The user face center cell is used to manage the user face of the center cell, including this Access polymerization layer user surface；

Wherein, the interface between the control plane center cell and the user face center cell is the 4th interface；4th connects Mouthful protocol stack, based on agreement include the general packet wireless service tunnel protocol and the User Datagram Protocol, be used for this Signalling between control plane center cell and the user face center cell.

Second aspect of the embodiment of the present invention provides a kind of method of communication, and this method is applied to communication system, the communication system System includes core net, center cell, distribution unit, user equipment, target's center's unit and target distribution unit, comprising: the mesh Mark distribution unit receives the radio resource allocation request of target's center's unit transmission；The target distribution unit according to the target without Line resource allocation request carries out radio resource allocation；The target distribution unit sends radio resource allocation to target's center's unit Response, radio resource allocation response include the information of radio resource allocation.

In embodiments of the present invention, the process of target distribution unit and target's center's unit wireless resource allocation is defined, For completing the distribution of radio resource.

The third aspect of the embodiment of the present invention provides a kind of method of communication, and this method is applied to communication system, the communication system System includes core net, center cell, distribution unit and user equipment, comprising: the center cell sends wireless to the distribution unit Request for building link, wireless link request include establishing the resource information of Radio Link；The center cell receives this point The wireless link response that cloth unit is sent.

Optionally, in some embodiments of the invention, the resource information for establishing Radio Link include about signaling without The packet data polymerized agreement PDCP information of line carrying SRB；The center cell sends wireless link to the distribution unit and asks It asks, comprising: the center cell sends the request of signaling wireless link to the distribution unit；

The center cell receives the wireless link response of distribution unit transmission, comprising: the center cell receives should The signaling wireless link response that distribution unit is sent, signaling wireless link response include the wireless spread-spectrum technology RLC information and the media access control MAC information.

Optionally, in some embodiments of the invention, which wirelessly holds about data Carry the packet data polymerized agreement PDCP information of DRB；The center cell sends wireless link request, packet to the distribution unit Include: the center cell sends the request of data wireless link to the distribution unit；

The center cell receives the wireless link response of distribution unit transmission, comprising: the center cell receives should The data wireless link response that distribution unit is sent, it includes that wireless spread-spectrum technology RLC believes which, which wirelessly establishes response, Breath and the media access control MAC information.

Optionally, in some embodiments of the invention, this method further include: the center cell passes through ascending wireless resource RRC transparent transmission message is controlled, the first object information of distribution unit transmission is received.

Optionally, in some embodiments of the invention, this method further include: the center cell passes through downlink RRC transparent transmission Message sends the second target information to the distribution unit.

Optionally, in some embodiments of the invention, which receives this point by uplink RRC transparent transmission message The first object information that cloth unit is sent, comprising: the center cell receives the distribution list by the first uplink RRC transparent transmission message The RRC connection request that member is sent；

The center cell sends the second target information by downlink RRC transparent transmission message, to the distribution unit, comprising: in this Heart unit sends RRC connection configuration by the first downlink RRC transparent transmission message, to the distribution unit；

The center cell is received the first object information of distribution unit transmission, is also wrapped by uplink RRC transparent transmission message Include: the center cell receives the completion letter of the RRC connection configuration of distribution unit transmission by the second uplink RRC transparent transmission message The completion information of breath, RRC connection configuration includes attach request.

Optionally, in some embodiments of the invention, the center cell is by downlink RRC transparent transmission message, to the distribution Unit sends the second target information, comprising: the center cell is sent by the second downlink RRC transparent transmission message to the distribution unit Safe mode command；

The center cell receives the first object information of distribution unit transmission by uplink RRC transparent transmission message, comprising: The center cell receives the completion information of the safe mode command of distribution unit transmission by third uplink RRC transparent transmission message.

Optionally, in some embodiments of the invention, the center cell is by downlink RRC transparent transmission message, to the distribution Unit sends the second target information, comprising: the center cell is sent by third downlink RRC transparent transmission message to the distribution unit The information of RRC connection reconfiguration；

The center cell receives the first object information of distribution unit transmission by uplink RRC transparent transmission message, comprising: The center cell receives the completion information of the RRC connection reconfiguration of distribution unit transmission by the 4th uplink RRC transparent transmission message.

Optionally, in some embodiments of the invention, this method further include: the center cell receives distribution unit hair The Release radio resource request sent, Release radio resource request include release cause.

Optionally, in some embodiments of the invention, this method further include: the center cell passes through downlink RRC transparent transmission Message sends the second target information to the distribution unit, comprising: the center cell is by the 4th downlink RRC transparent transmission message, to this The information of distribution unit transmission RRC Connection Release.

Optionally, in some embodiments of the invention, this method further include: the center cell is sent to the distribution unit Release radio resource order, the Release radio resource order include the release cause；The center cell receives distribution unit hair The information that the Release radio resource sent is completed.

Optionally, in some embodiments of the invention, which further includes target's center's unit and target distribution Unit, this method further include: the center cell receives the first object of distribution unit transmission by uplink RRC transparent transmission message Information, comprising: the center cell receives the measurement report of distribution unit transmission by the 5th uplink RRC transparent transmission message.

Optionally, in some embodiments of the invention, this method further include: the center cell is to target's center's unit Send switching demand；The center cell receives the switching requirement validation information of target's center's unit transmission, switches requirement validation Information includes wireless resource configuration.

Fourth aspect of the embodiment of the present invention provides a kind of method of communication, and this method is applied to communication system, the communication system System includes core net, center cell, distribution unit, user equipment, target's center's unit and target distribution unit, comprising: the mesh It marks center cell and sends radio resource allocation request to the target distribution unit；Target's center's unit receives the target distribution list The radio resource allocation response that member is sent, radio resource allocation response include the information of radio resource allocation.

Optionally, in some embodiments of the invention, this method further include: target's center's unit receives center list The switching demand that member is sent；Target's center's unit sends switching requirement validation information to the center cell, switches requirement validation Information includes wireless resource configuration.

The 5th aspect of the embodiment of the present invention provides a kind of method of communication, and this method is applied to communication system, the communication system System includes core net, center cell, distribution unit and user equipment, comprising: the distribution unit receives center cell transmission Radio bearer establishes request, and it includes establishing the resource information of radio bearer which, which establishes request,；The distribution unit according to The resource information for establishing radio bearer establishes radio bearer；The distribution unit sends the radio bearer to the center cell and establishes Response.

Optionally, in some embodiments of the invention, the resource information for establishing radio bearer include about signaling without The packet data polymerized agreement PDCP information of line carrying SRB；The radio bearer that the distribution unit receives center cell transmission is built Vertical request, comprising: the Signaling Radio Bearer that the distribution unit receives center cell transmission establishes request；

The distribution unit establishes radio bearer according to the resource information for establishing radio bearer, comprising: the distribution unit root According to the packet data polymerized agreement PDCP information about Signaling Radio Bearer SRB, the wireless spread-spectrum technology RLC of the distribution unit Information and media access control MAC information, establish Signaling Radio Bearer；

The distribution unit sends the radio bearer to the center cell and establishes response, comprising: the distribution unit is to the center Unit sends the Signaling Radio Bearer and establishes response, which establishes response security information.

Optionally, in some embodiments of the invention, the resource information for establishing radio bearer include about data without The packet data polymerized agreement PDCP information of line carrying DRB；The radio bearer that the distribution unit receives center cell transmission is built Vertical request, comprising: the Data Radio Bearer that the distribution unit receives center cell transmission establishes request；

The distribution unit establishes radio bearer according to the resource information for establishing radio bearer, comprising: the distribution unit root According to the packet data polymerized agreement PDCP information about Data Radio Bearer DRB, the wireless spread-spectrum technology RLC of the distribution unit Information and media access control MAC information, establish Data Radio Bearer；

The distribution unit sends the radio bearer to the center cell and establishes response, comprising: the distribution unit is to the center Unit sends the Data Radio Bearer and establishes response, and it includes the security information which, which establishes response,.

Optionally, in some embodiments of the invention, this method further include: the distribution unit is sent to the center cell Customer equipment context information is created, which includes the attach request.

Optionally, in some embodiments of the invention, this method further include: the distribution unit receives center cell hair The radio resource control RRC release request sent；The distribution unit sends RRC release response to the center cell, and RRC release is rung Resource release is completed applied to the center cell.

Optionally, in some embodiments of the invention, which further includes target's center's unit and target distribution Unit, this method further include: the distribution unit sends measurement report to the center cell, which is the user equipment Measurement report information.

Optionally, in some embodiments of the invention, this method further include: the distribution unit receives center cell hair The switching sent shows information, and switching display letter includes executing handover information.

Optionally, in some embodiments of the invention, which is used to manage the non real-time control of multiple standards Part, the center cell include access polymer layer control plane and access polymerization layer user surface；

The distribution unit is used to manage the real-time control part of each standard, which includes for the wireless of user Access layer control plane, radio access layer control plane and wireless access layer user surface for cell；

Optionally, in some embodiments of the invention, which includes in control plane center cell and user face Heart unit；The control plane center cell is used to manage the control plane of the center cell, including the access polymer layer control plane；The use Family face center cell is used to manage the user face of the center cell, including the access polymerize layer user surface；

The 6th aspect of the embodiment of the present invention provides a kind of method of communication, and this method is applied to communication system, the communication system System includes core net, center cell, distribution unit, user equipment, target's center's unit and target distribution unit, comprising: the mesh Mark distribution unit receives the radio resource allocation request of target's center's unit transmission；The target distribution unit according to the target without Line resource allocation request carries out radio resource allocation；The target distribution unit sends radio resource allocation to target's center's unit Response, radio resource allocation response include the information of radio resource allocation.

Optionally, in some embodiments of the invention, this method further include: the target distribution unit is to the target's center Unit sends switching and completes information.

The 7th aspect of the embodiment of the present invention provides a kind of method of communication, and this method is applied to communication system, the communication system System includes core net, center cell, distribution unit and user equipment, comprising: the center cell sends wireless to the distribution unit Request is established in carrying, and it includes establishing the resource information of radio bearer which, which establishes request,；The center cell receives this point The radio bearer that cloth unit is sent establishes response.

Optionally, in some embodiments of the invention, the resource information for establishing radio bearer include about signaling without The packet data polymerized agreement PDCP information of line carrying SRB；The center cell sends radio bearer foundation to the distribution unit and asks It asks, comprising: the center cell sends Signaling Radio Bearer to the distribution unit and establishes request；

The radio bearer that the center cell receives distribution unit transmission establishes response, comprising: the center cell receives should The Signaling Radio Bearer that distribution unit is sent establishes response, and it includes security information which, which establishes response,.

Optionally, in some embodiments of the invention, the resource information for establishing radio bearer include about data without The packet data polymerized agreement PDCP information of line carrying DRB；The center cell sends radio bearer foundation to the distribution unit and asks It asks, comprising: the center cell sends Data Radio Bearer to the distribution unit and establishes request；

The radio bearer that the center cell receives distribution unit transmission establishes response, comprising: the center cell receives should The Data Radio Bearer that distribution unit is sent establishes response, and it includes the security information which, which establishes response,.

Optionally, in some embodiments of the invention, this method further include: the center cell receives distribution unit hair The creation customer equipment context information sent, which includes the attach request.

Optionally, in some embodiments of the invention, this method further include: the center cell is sent to the distribution unit Radio resource control RRC release request；The center cell receives the RRC release response of distribution unit transmission, and RRC release is rung Resource release is completed applied to the center cell.

Optionally, in some embodiments of the invention, which further includes target's center's unit and target distribution Unit, this method further include: the center cell receives the measurement report of distribution unit transmission, which is that the user sets Standby measurement report information.

Optionally, in some embodiments of the invention, this method further include: the center cell is sent to the distribution unit Switching display information, switching display letter includes executing handover information.

Eighth aspect of the embodiment of the present invention provides a kind of method of communication, and this method is applied to communication system, the communication system System includes core net, center cell, distribution unit, user equipment, target's center's unit and target distribution unit, comprising: the mesh Mark center cell receives the switching demand of center cell transmission；Target's center's unit sends switching demand to the center cell Confirmation message, switching requirement validation information includes wireless resource configuration.

Optionally, in some embodiments of the invention, this method further include: target's center's unit receives the target point Information is completed in the switching that cloth unit is sent.

The 9th aspect of the embodiment of the present invention provides a kind of distribution unit, has and realizes corresponding to the offer of above-mentioned first aspect The function of the method for multicarrier configuration.The function it is real can also to execute corresponding software by hardware realization by hardware It is existing.The hardware or software include one or more modules corresponding with above-mentioned function.

The tenth aspect of the embodiment of the present invention provides a kind of target distribution unit, has and realizes that corresponding to above-mentioned second aspect mentions The function of the method for the multicarrier configuration of confession.The function can also be executed corresponding soft by hardware realization by hardware Part is realized.The hardware or software include one or more modules corresponding with above-mentioned function.

The tenth one side of the embodiment of the present invention provides a kind of center cell, has and realizes that corresponding to the above-mentioned third aspect provides Multicarrier configuration method function.The function can also execute corresponding software by hardware realization by hardware It realizes.The hardware or software include one or more modules corresponding with above-mentioned function.

The 12nd aspect of the embodiment of the present invention provides a kind of target's center's unit, has and realizes corresponding to above-mentioned fourth aspect The function of the method for the multicarrier configuration of offer.The function can also be executed corresponding by hardware realization by hardware Software realization.The hardware or software include one or more modules corresponding with above-mentioned function.

The 13rd aspect of the embodiment of the present invention provides a kind of distribution unit, has and realizes that corresponding to above-mentioned 5th aspect provides Multicarrier configuration method function.The function can also execute corresponding software by hardware realization by hardware It realizes.The hardware or software include one or more modules corresponding with above-mentioned function.

Fourteenth aspect of the embodiment of the present invention provides a kind of target distribution unit, has and realizes corresponding to above-mentioned 6th aspect The function of the method for the multicarrier configuration of offer.The function can also be executed corresponding by hardware realization by hardware Software realization.The hardware or software include one or more modules corresponding with above-mentioned function.

The 15th aspect of the embodiment of the present invention provides a kind of center cell, has and realizes that corresponding to above-mentioned 7th aspect provides Multicarrier configuration method function.The function can also execute corresponding software by hardware realization by hardware It realizes.The hardware or software include one or more modules corresponding with above-mentioned function.

The 16th aspect of the embodiment of the present invention provides a kind of target's center's unit, has and realizes corresponding to above-mentioned eighth aspect The function of the method for the multicarrier configuration of offer.The function can also be executed corresponding by hardware realization by hardware Software realization.The hardware or software include one or more modules corresponding with above-mentioned function.

The 17th aspect of the embodiment of the present invention provides a kind of distribution unit, which is applied to communication system, this is logical Letter system includes core net, center cell, distribution unit and user equipment, comprising:

Processor, transceiver, bus, the processor and the transceiver are connected by the bus；

Transceiver, for receiving the wireless link request of center cell transmission, the wireless link request packet Include the resource information for establishing Radio Link；Wireless link response is sent to the center cell；

Processor, for establishing Radio Link according to the resource information for establishing Radio Link.

The 18th aspect of the embodiment of the present invention provides a kind of target distribution unit, which is characterized in that the target distribution unit Applied to communication system, the communication system include core net, center cell, distribution unit, user equipment, target's center's unit and Target distribution unit, comprising:

Transceiver, for receiving the radio resource allocation request of target's center's unit transmission；To target's center's unit Radio resource allocation response is sent, radio resource allocation response includes the information of radio resource allocation；

Processor, for carrying out radio resource allocation according to the Target Wireless resource allocation request.

The 19th aspect of the embodiment of the present invention provides a kind of center cell, which is applied to communication system, this is logical Letter system includes core net, center cell, distribution unit and user equipment, comprising:

Transceiver, for sending wireless link request to the distribution unit, wireless link request includes building The resource information of vertical Radio Link；Receive the wireless link response of distribution unit transmission.

The 20th aspect of the embodiment of the present invention provides a kind of target's center's unit, and target's center's unit application is in communication system System, which includes core net, center cell, distribution unit, user equipment, target's center's unit and target distribution list Member, comprising:

Transceiver, for sending radio resource allocation request to the target distribution unit；Receive target distribution unit hair The radio resource allocation response sent, radio resource allocation response include the information of radio resource allocation.

On the one hand the embodiment of the present invention second provides a kind of distribution unit, which is applied to communication system, this is logical Letter system includes core net, center cell, distribution unit and user equipment, comprising:

Transceiver, the radio bearer for receiving center cell transmission establish request, which establishes request packet Include the resource information for establishing radio bearer；The radio bearer, which is sent, to the center cell establishes response；

Processor, for establishing radio bearer according to the resource information for establishing radio bearer.

The two or two aspect of the embodiment of the present invention provides a kind of target distribution unit, and the target distribution unit application is in communication system System, which includes core net, center cell, distribution unit, user equipment, target's center's unit and target distribution list Member, comprising:

Transceiver, for receiving the radio resource allocation request of target's center's unit transmission, to target's center's unit Radio resource allocation response is sent, radio resource allocation response includes the information of radio resource allocation；

The two or three aspect of the embodiment of the present invention provides a kind of center cell, which is applied to communication system, this is logical Letter system includes core net, center cell, distribution unit and user equipment, comprising:

Transceiver establishes request for sending radio bearer to the distribution unit, and it includes building which, which establishes request, The resource information of vertical radio bearer；The radio bearer for receiving distribution unit transmission establishes response.

The two or four aspect of the embodiment of the present invention provides a kind of target's center's unit, and target's center's unit application is in communication system System, which includes core net, center cell, distribution unit, user equipment, target's center's unit and target distribution list Member, comprising:

Transceiver, for receiving the switching demand of center cell transmission；Switching requirement validation is sent to the center cell Information, switching requirement validation information includes wireless resource configuration.

The aspect of the embodiment of the present invention the two or five provides a kind of communication system, the communication system include core net, center cell, Distribution unit, user equipment, target's center's unit and target distribution unit；

The distribution unit is to execute the distribution unit being somebody's turn to do in above-mentioned first aspect or any optional mode of first aspect；

The target distribution unit is to execute the target point being somebody's turn to do in above-mentioned second aspect or any optional mode of second aspect Cloth unit；

The center cell is to execute the center cell being somebody's turn to do in the above-mentioned third aspect or any optional mode of the third aspect；

Target's center's unit is to execute in the target being somebody's turn to do in above-mentioned fourth aspect or any optional mode of fourth aspect Heart unit.

The aspect of the embodiment of the present invention the two or six provides a kind of communication system, the communication system include core net, center cell, Distribution unit, user equipment, target's center's unit and target distribution unit；

The distribution unit is to execute the distribution unit being somebody's turn to do in above-mentioned 5th aspect or the 5th any optional mode of aspect；

The target distribution unit is to execute the target point being somebody's turn to do in above-mentioned 6th aspect or the 6th any optional mode of aspect Cloth unit；

The center cell is to execute the center cell being somebody's turn to do in above-mentioned 7th aspect or the 7th any optional mode of aspect；

Target's center's unit is to execute in the target being somebody's turn to do in above-mentioned eighth aspect or any optional mode of eighth aspect Heart unit.

The two or seven aspect of the embodiment of the present invention provides a kind of storage medium, it should be noted that the technical solution sheet of this hair The all or part of the part that contributes to existing technology or the technical solution can produce mouth with software in other words in matter Form embodies, which is stored in a storage medium, by being stored as based on used in above equipment Calculation machine software instruction, it includes for execute above-mentioned first aspect, second aspect, the third aspect, fourth aspect, the 5th aspect, 6th aspect, the 7th aspect or eighth aspect are program designed by equipment.

The storage medium includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access The various media that can store program code such as memory (RAM, Random Access Memory), magnetic or disk.

As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that

In embodiments of the present invention, the network architecture of several next-generation communication networks is proposed, and passes through definition center Signalling exchange between unit and distribution unit realizes attachment, release, the communication such as switching, also to the protocol stack of distinct interface Carried out an explanation so that equipment and user when using next generation network, there is the specification of a communication, thus preferably into Row communication.

Detailed description of the invention

Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to institute in embodiment and description of the prior art Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings Obtain other attached drawings.

Fig. 1 is the system architecture schematic diagram provided in the embodiment of the present invention；

Fig. 2 is a schematic diagram of the protocol stack of the interface provided in the embodiment of the present invention；

Fig. 3 is another schematic diagram of the protocol stack of the interface provided in the embodiment of the present invention；

Fig. 4 is another schematic diagram of the protocol stack of the interface provided in the embodiment of the present invention；

Fig. 5 is another schematic diagram of the protocol stack of the interface provided in the embodiment of the present invention；

Fig. 6 is another schematic diagram of the protocol stack of the interface provided in the embodiment of the present invention；

Fig. 7 is another schematic diagram of the protocol stack of the interface provided in the embodiment of the present invention；

Fig. 8 is another schematic diagram of the protocol stack of the interface provided in the embodiment of the present invention；

Fig. 9 is another system architecture schematic diagram provided in the embodiment of the present invention；

Figure 10 is another schematic diagram of the protocol stack of the interface provided in the embodiment of the present invention；

Figure 11 is another system architecture schematic diagram provided in the embodiment of the present invention；

Figure 12 is another system architecture schematic diagram provided in the embodiment of the present invention；

Figure 13 is one embodiment schematic diagram of the method for the communication provided in the embodiment of the present invention；

Figure 14 is another embodiment schematic diagram of the method for the communication provided in the embodiment of the present invention；

Figure 15 is another embodiment schematic diagram of the method for the communication provided in the embodiment of the present invention；

Figure 16 is another embodiment schematic diagram of the method for the communication provided in the embodiment of the present invention；

Figure 17 is another embodiment schematic diagram of the method for the communication provided in the embodiment of the present invention；

Figure 18 is another embodiment schematic diagram of the method for the communication provided in the embodiment of the present invention；

Figure 19 is another embodiment schematic diagram of the method for the communication provided in the embodiment of the present invention；

Figure 20 is another embodiment schematic diagram of the method for the communication provided in the embodiment of the present invention；

Figure 21 is one embodiment schematic diagram of the distribution unit provided in the embodiment of the present invention；

Figure 22 is one embodiment schematic diagram of the target distribution unit provided in the embodiment of the present invention；

Figure 23 is one embodiment schematic diagram of the center cell provided in the embodiment of the present invention；

Figure 24 is one embodiment schematic diagram of the target's center's unit provided in the embodiment of the present invention；

Figure 25 is another embodiment schematic diagram of the distribution unit provided in the embodiment of the present invention；

Figure 26 is another embodiment schematic diagram of the target distribution unit provided in the embodiment of the present invention；

Figure 27 is another embodiment schematic diagram of the center cell provided in the embodiment of the present invention；

Figure 28 is another embodiment schematic diagram of the target's center's unit provided in the embodiment of the present invention.

Specific embodiment

The embodiment of the invention provides a kind of methods of communication, for defining the signaling between center cell and distribution unit Interactive process, what is more standardized communicate.

In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work It encloses.

In the discussion that existing Next-Generation enters planar network architecture, following key point is proposed, comprising: wirelessly connect (RAN, the Residential Access Network) evolution that networks can be divided into central control unit (Central Unit, CU) With distributed control unit (Distributed Unit, DU), wherein central control unit also abbreviation center cell, it is distributed Control unit also abbreviation distribution unit.RAN and core net (Core Network, CN) can individually carry out evolution, and RAN can shield Cover influence of a variety of access end for CN.The user face of wireless access network and control plane are full decoupled, can support distributed portion Administration.

Next-Generation, which networks, can preferably be suitable for the access of a variety of access technologies, guarantee wireless network resource It uses as needed, also, RAN and CN coupling is small, maintenance time and maintenance cost can be shortened with independent evolution.

As shown in Figure 1, for a schematic diagram of system architecture in the embodiment of the present invention, including core net, center cell, point Cloth unit and user equipment (User Equipment, UE), the center cell include access polymer layer control plane (Access Convergence Controlplane, ACC), access polymerization layer user surface (Access Convergence Userplane, ACU) and for user radio access layer control plane (Radio Access Controlplane Function for User, RAC-User), for managing the non real-time control section of multiple standards；The distribution unit includes the wireless access for cell Layer control plane (Radio Access Controlplane Function for Cell, RAC-Cell) and radio access layer are used Family face (Radio Access Userplane Function, RAU), for managing the real-time control part of each standard.Its In, access polymer layer control plane, the control plane of the website for managing the multiple standard；Access polymerization layer user surface, is used for Manage the user face of the website of the multiple standard；For the radio access layer control plane of user, for for the wireless of user The management of connection.

In centralized unit CU, it is distributed tri- functional modules of ACC, ACU and RAC-User, wherein RAC-User can be with It is divided into LTE RAC-User and NR RAC-User, and as LTE (Long Term Evolution, long term evolution) and NR (New RAT, new wireless access technology) central control level, be mainly responsible for the non real-time control section of multiple standards, such as: user class RRC (Radio Resource Control, wireless heterogeneous networks), PDCP (Packet Data Convergence Protocol, Packet data polymerized agreement).For the radio access layer control plane of cell, for being directed to the management of cell；Radio access layer is used Family face, transmission and scheduling Collaborative Control for data；CU is also possible to connect multiple DU.

DU can also be divided into LTE DU and NR DU according to the difference of access network type, include LTE RAC- in LTE DU Two functions of Cell and LTE RAU, include two functions of NR RAC-Cell and LTE RAU in NR DU, and DU is mainly responsible for respectively The real-time control part of a standard, such as: cell level RRC (Radio Resource Control, wireless heterogeneous networks), RLC (Radio Link Control, wireless spread-spectrum technology), MAC (Medium Access Control, centre access control), PHY (Physical, physical layer) etc..

Wherein, the interface between the center cell and the distribution unit is first interface, and the first interface includes Control plane first interface and user face first interface；The protocol stack of the control plane first interface, based on agreement include described The application protocol and Flow Control Transmission Protocol of first interface are passed for the signaling between the center cell and the distribution unit It is defeated；The protocol stack of user face first interface, based on agreement include general packet wireless service tunnel protocol, transmission control Agreement and User Datagram Protocol, for the data transmission between the center cell and the distribution unit；

Interface between first center cell and the second center cell is second interface, and the second interface includes control plane Second interface and user face second interface；The protocol stack of the control plane second interface, based on agreement include described second connecing The application protocol of mouth and the Flow Control Transmission Protocol, between first center cell and second center cell Signalling；The protocol stack of user face second interface, based on agreement include General Packet Radio Service tunnel association It negotiates peace the User Datagram Protocol, for the data transmission between first center cell and second center cell；

Interface between the center cell and the core net is third interface, and the third interface includes control plane the Three interfaces and user face third interface；The protocol stack of the control plane third interface, based on agreement include the third interface Application protocol and the Flow Control Transmission Protocol, for the signalling between the center cell and the core net；Institute The protocol stack for stating user face third interface, based on agreement include the general packet wireless service tunnel protocol and the user Datagram protocol, for the data transmission between the center cell and the core net.

Below in an exemplary fashion, to first interface, the protocol stack of second interface and third interface is illustrated, In, this naming method of first interface is one generally bright, it is exemplary in illustrating for each interface also do not constitute Specific restriction to the interface.

(1) first interface here is properly termed as Xn interface, the interface between CU and DU, then Xn interface may include control Face Xn-c (Control Plane) interface and user face Xn-u (User Plane) interface processed, specific protocol stack of the interface definition It can be as follows:

The protocol stack of control plane (Xn-c) interface, can be based on Xn-AP (Xn Application Protocol, Xn application Agreement) and SCTP (Stream Control Transmission Protocol, Flow Control Transmission Protocol), reliable biography is provided It is defeated, as shown in Figure 2.

The protocol stack of user face (Xn-u) interface, based on GTP-U, (GPRS Tunnel Protocol-User Plane is used The wireless universal service tunnel protocol in family face), wherein GTP-U agreement can be based on TCP (Transfer Control Protocol, transmission control protocol) as shown in figure 3, or, being based on UDP (User Datagram Protocol, user datagram Agreement), as shown in Figure 4.

(2) second interface here is properly termed as Xx interface, the interface between CU and CU, then Xx interface may include control Face Xx-c (Control Plane) interface and user face Xx-u (User Plane) interface processed, specific protocol stack of the interface definition It can be as follows:

The protocol stack of control plane Xx-c interface is based on Xx-AP (Xx Application Protocol, Xx application protocol) And SCTP, as shown in Figure 5.

The protocol stack of user face Xx-u interface is based on GTP-U, as shown in Figure 6.

(3) third interface here is properly termed as NG1 interface, the interface between CU and core net, and NG1 interface includes using Family face NG1-c (Control Plane) interface and user face NG1-u (User Plane) interface, specific protocol stack of the interface can It is defined as follows:

The protocol stack of control plane (NG1-c) interface, based on NG1-AP (NG1Application Protocol, NG1 application Agreement) and SCTP, as shown in Figure 7.

The protocol stack of user face NG1-u interface is based on GTP-U, as shown in Figure 8.

As shown in figure 9, for another schematic diagram of system architecture in the embodiment of the present invention, including core net, center cell, Distribution unit and user equipment, the center cell include control plane center cell and user face center cell；The control plane Center cell includes the access polymer layer control plane ACC and radio access layer control plane RAC-User for user, for managing The control plane of the center cell；User face center cell includes access polymerization layer user surface ACU, for managing in described The user face of heart unit；The distribution unit includes the radio access layer control plane RAC-Cell and radio access layer for cell User face RAU, for managing the real-time control part of each standard.

It should be noted that system architecture major function shown in Fig. 9 is identical as Fig. 1's, wherein according to access network type Difference, in the control plane in heart unit, RAC-User is further divided into LTE RAC-User and NR RAC-User.It is being distributed In cells D U, it is further divided into LTE DU and NR DU, includes two functions of LTE RAC-Cell and LTE RAU in LTE DU Module includes two functional modules of NR RAC-Cell and LTE RAU in NR DU.

It should be noted that the first interface of definition, second interface and third connect in system architecture diagram shown in Fig. 9 The protocol stack of mouth is same as described above, and details are not described herein again.In Fig. 9, wherein the control plane center cell and the user face Interface between center cell is the 4th interface；The protocol stack of 4th interface, based on agreement include the general packet Radio Service Tunneling Protocol and the User Datagram Protocol, it is single for the control plane center cell and user face center Signalling between member.

Illustratively, the 4th interface of (4) here can be described as Xm interface, be CU control plane (CU-CP) and CU user face (CU-UP) interface between, protocol stack are as follows:

The protocol stack of Xm interface, based on GTP-C (GPRS Tunnel Protocol-Control plane, control plane Wireless universal service tunnel protocol), as shown in Figure 10.

It as shown in figure 11, is another schematic diagram of system architecture in the embodiment of the present invention, including core net, center list Member, distribution unit and user equipment, the center cell include access polymer layer control plane ACC and access polymerization layer user surface ACU, for managing the non real-time control section of multiple standards；The distribution unit includes the radio access layer control for user Face RAC-User, radio access layer control plane RAC-Cell and wireless access layer user surface RAU for cell, it is each for managing The real-time control part of a standard.

In centralized unit CU, two functional modules of ACC and ACU are distributed, as the central control level of LTE and NR, mainly It is responsible for Collaborative Control or the data distribution etc. of multiple standards.It may connect multiple DU.

DU is divided into LTE DU and NR DU according to access network type difference, includes LTE RAC (including LTE in LTE DU RAC-Cell and LTE RAC-User) and two functions of LTE RAU include NR RAC (including NR RAC-Cell in NR DU With two functions of NR RAC-User) and LTE RAU, DU is mainly responsible for the real-time control part of each standard.Such as: cell-level Other RRC, user class RRC, RLC (Radio Link Control, wireless spread-spectrum technology), MAC (Medium Access Control, centre access control), PHY (Physical, physical layer) etc..

It should be noted that protocol stack defined in system architecture diagram shown in Figure 11 here, with definition among the above The protocol stack of one interface, second interface, third interface and the 4th interface is identical, and details are not described herein again.

It as shown in figure 12, is another schematic diagram of system architecture in the embodiment of the present invention, including core net, center list Member, distribution unit and user equipment, the center cell include control plane center cell and user face center cell；The control Face center cell includes access polymer layer control plane ACC, for managing the control plane of the center cell；User face center Unit includes access polymerization layer user surface ACU, for managing the user face of the center cell.The distribution unit includes being directed to Radio access layer control plane RAC-User, the radio access layer control plane RAC-Cell and radio access layer for cell of user User face RAU, for managing the real-time control part of each standard.

It should be noted that system architecture major function shown in Figure 12 is identical as Figure 11's, wherein according to access net class The difference of type is further divided into LTE DU and NR DU in distribution unit DU, in LTE DU include LTE RAC-User, Tri- functional modules of LTE RAC-Cell and LTE RAU include NR RAC-User, NR RAC-Cell and LTE in NR DU Tri- functional modules of RAU.

It should be noted that protocol stack defined in system architecture diagram shown in Figure 12 here, with definition among the above The protocol stack of one interface, second interface, third interface and the 4th interface is identical, and details are not described herein again.

It should be understood that the system architecture diagram of technical solution of the present invention application is not limited to several schematic diagrames of above-mentioned offer, wherein In the system construction drawing shown in Fig. 9 and Figure 12, in DU, radio access layer control plane RAC-User for user and it is directed to The radio access layer control plane RAC-Cell of cell can also be included in an Implement of Function Module.There can also be other systems Architecture diagram, such as RAC-User and RAC- in another alternate architecture, in RAC (including LTE RAC and NR RAC) Cell wherein any one or both may include into ACC, then there is also above-mentioned similar several system architecture diagrams, Only at this point, may include RAC-User and RAC-Cell wherein any one or two in ACC.In addition, in system above frame In structure definition, ACU function can be distributed in DU, to support the access of real time business, such as: low time delay business connects Enter；Form the modes such as new framework distribution alternative.

One is done briefly to the concrete function of each functional module occurred in several system architectures of above-mentioned diagram below Explanation, it is as follows:

1) polymer layer control plane (Access Convergence Controlplane, ACC) is accessed, to multiple standards The control plane of website is managed collectively.

The radio resource Collaborative Control of different websites or different community, such as: load balancing；

Mobile management, comprising: with standard switching and the switching of different standard etc.；

Multi-connection management, including dual link management (Dual Connectivity Management).For a terminal, By a control plane, establish a plurality of network to terminal data transmission channel；A plurality of data channel may be from identical Access standard, it is also possible to a variety of access standards, such as: GSM (Global System for Mobile Communication, global system for mobile communications)/UMTS (Universal Mobile Telecommunications System, Universal Mobile Communication System)/LTE/NR/WiFi (Wireless Fidelity, Wireless Fidelity) etc.；

Measuring configuration and measurement report management；

Multi-site user's context management, comprising: the identity recognition number ID of each user, state, priority etc.；

Multi-site radio access bearer management, comprising: carrying quantity, bearer types, loading priority etc.；

Data sending strategy management, comprising: control plane anchor point policy control under multi-connection scene, user under multi-connection scene Face data distributing strategy control etc.；

Link management, comprising: new wireless access network-core network interface link management (such as: NG1 interface or S1 interface), newly The new radio access network interface link management (such as: Xx interface or X2 interface) of wireless access network-, wireless centralized unit-distribution of wireless Unit interface link management (such as: Xn interface)；

Core net selection function is suitable for user's selection according to the access net that the ability of access terminal or terminal access Access network accesses etc..

2) access polymerization layer user surface (Access Convergence Userplane, ACU), to the website of multiple standards User face be managed collectively.

The transmission of user face data；

The shunting of user face data, comprising: the shunting under multithread scene, the shunting etc. under double-current scene；

IP compressions；

The encryption and decryption of user face data；

Data buffer storage and sequence etc..

3) it is directed to radio access layer control plane (the Radio Access Controlplane Function for of user User, RAC-User)

Wireless resource management relevant to access technology, such as: uplink and downlink radio resource allocation etc.；

User radio connection foundation and release management, including user's context management etc.；

Radio bearer management；

Wireless admission control controls which terminal has access to, which cannot；

Control the encryption and decryption of face data, the i.e. encryption and decryption of signaling；

Control the integrity protection of face data, the i.e. integrity protection etc. of signaling.

4) it is directed to radio access layer control plane (the Radio Access Controlplane Function for of cell Cell, RAC-Cell)

The scheduling and transmission control of paging message；

Scheduling and transmission control of system broadcast message etc..

5) wireless access layer user surface (Radio Access Userplane Function)

The transmission of user face data；

Control the transmission of face data；

Collaborative Control is dispatched, such as: carrier wave polymerization, cooperative scheduling power control etc..

One, for above-mentioned system architecture Fig. 1 and Fig. 9, one is done to technical solution of the present invention by way of examples below A explanation, as shown in figure 13, for one embodiment schematic diagram of the method communicated in the embodiment of the present invention, comprising:

1301, accidental channel access request is sent to DU by UE；

In embodiments of the present invention, step can include: user equipment sends accidental channel access request to distribution unit (Random Access Channel Request)；Distribution unit receives the accidental channel access request that user equipment is sent.

1302, accidental channel access response is sent to UE by DU；

In embodiments of the present invention, step can include: distribution unit sends accidental channel access response to user equipment (Random Access Channel Response)；User equipment receives the accidental channel that distribution unit is sent and accesses response.

1303, RRC (Radio Resource Control, wireless heterogeneous networks) connection request is sent to DU by UE；

In embodiments of the present invention, step can include: user equipment sends RRC connection request (RRC to distribution unit Connection Request)；Distribution unit receives the RRC connection request that user equipment is sent.It should be noted that step 1301-1303 is regarded as UE and initiates the process to the channel of access immediately of network.

1304, RRC connection request is sent to CU by DU；

In embodiments of the present invention, step can include: distribution unit passes through the first uplink RRC transparent transmission message (Uplink RRC Transport), RRC connection request is sent to center cell；Center cell receives the RRC connection that distribution unit is sent and asks It asks, is handled.Specific flow definition sees the step 1304 in Figure 13.

In embodiments of the present invention, the process of wireless link are as follows: one, center cell to distribution unit send radio chains Request is established on road, and wireless link request includes establishing the resource information of Radio Link；Center cell receives distribution unit hair The wireless link response sent.

(1) resource information for establishing Radio Link includes packet data polymerized agreement about Signaling Radio Bearer SRB PDCP information；Center cell sends the request of signaling wireless link to distribution unit；Center cell receives distribution unit and sends The response of signaling wireless link, the response of signaling wireless link includes that wireless spread-spectrum technology RLC information and media access Control MAC information.

(2) resource information for establishing Radio Link is believed about the packet data polymerized agreement PDCP of Data Radio Bearer DRB Breath；Center cell sends the request of data wireless link to distribution unit；Center cell receives the data that distribution unit is sent Wireless link response, it includes that wireless spread-spectrum technology RLC information and media access control MAC are believed that data, which wirelessly establish response, Breath.

Two, distribution unit receives the wireless link request that center cell is sent, and wireless link request includes building The resource information of vertical Radio Link；Distribution unit establishes Radio Link according to the resource information for establishing Radio Link；Distribution unit Wireless link response is sent to center cell.

Can include: (1) resource information for establishing Radio Link includes about the packet data polymerized of Signaling Radio Bearer SRB Agreement PDCP information；Distribution unit receives the signaling wireless link request that center cell is sent；Distribution unit according to about Packet data polymerized agreement PDCP information, the wireless spread-spectrum technology RLC information of distribution unit and the media of Signaling Radio Bearer SRB Access control MAC information establishes signaling Radio Link；Distribution unit sends the response of signaling wireless link to center cell, The response of signaling wireless link includes wireless spread-spectrum technology RLC information or media access control MAC information.

(2) resource information for establishing Radio Link includes packet data polymerized agreement about Data Radio Bearer DRB PDCP information；Distribution unit receives the data wireless link request that center cell is sent；Distribution unit is according to about data Packet data polymerized agreement PDCP information, the wireless spread-spectrum technology RLC information of distribution unit and the media access of radio bearer DRB MAC information is controlled, data Radio Link is established；Distribution unit sends the response of data wireless link, data to center cell Wireless establish responds including wireless spread-spectrum technology RLC information or media access control MAC information.

Concrete implementation, can be refering to shown in step 1305,1306,1317 and 1318.

1305, CU will be sent to DU for the first configuring request of first interface；

In embodiments of the present invention, step can include: center cell sends for first interface to distribution unit One configuring request (Setup Request), the first configuring request for first interface include about Signaling Radio Bearer SRB Packet data polymerized agreement PDCP information is directed to Signaling Radio Bearer (SRB, Signalling Radio Bears) for establishing Data transmitting channel；Distribution unit receives the first configuring request for first interface that distribution unit is sent, for first Packet data polymerized agreement PDCP information of first configuring request of interface about Signaling Radio Bearer SRB is directed to for establishing The data transmitting channel of Signaling Radio Bearer.Illustratively, first interface here is Xn interface.

1306, DU will be sent to CU for the first configuration response of first interface；

In embodiments of the present invention, the step can include: distribution unit according to be directed to first interface the first configuring request, The first configuration response (Setup Response) for being directed to first interface is sent to center cell；Center cell receives distribution unit The first configuration response for first interface sent.Here the specific of the data transmitting channel for being directed to Signaling Radio Bearer is established Flow definition sees step 1305 and 1306 in Figure 13.

1307, RRC connection configuration is sent to DU by CU；

In embodiments of the present invention, step can include: center cell passes through the first downlink RRC transparent transmission message (Downlink RRC Transport) sends RRC connection configuration (RRC Connection Setup) to distribution unit；Distribution Unit receives the RRC connection configuration that center cell is sent.Here the flow definition for sending RRC connection configuration is seen in Figure 13 Step 1307.

1308, RRC connection configuration is sent to UE by DU；

In embodiments of the present invention, step can include: distribution unit sends RRC connection configuration to user equipment, is used for User equipment carries out RRC connection configuration；User equipment receives the RRC connection configuration that distribution unit is sent.

1309, the completion information that RRC connection configures is sent to DU by UE；

In embodiments of the present invention, step can include: user equipment completes RRC connection configuration, and sends out to distribution unit Completion (the RRC Connection Setup Complete) information for sending RRC connection to configure；Distribution unit receives user equipment hair Completion (the RRC Connection Setup Complete) information for the RRC connection configuration sent, the completion letter of RRC connection configuration Breath includes attach request (Attach Request).

1310, the completion information that RRC connection configures is sent to CU by DU；

In embodiments of the present invention, step can include: distribution unit passes through the second uplink RRC transparent transmission message, Xiang Zhongxin Unit sends the completion information and attach request of RRC connection configuration；Center cell receives the RRC connection configuration that distribution unit is sent Completion information and attach request.

1311, CU is sent to CN for UE information is initialized；

In embodiments of the present invention, step can include: center cell sends initialising subscriber facility information to core net (Initial UE Message), initialising subscriber facility information includes attach request；Core net receives what center cell was sent Initialising subscriber facility information, initialising subscriber facility information include attach request.

1312, CN is sent to CU for context configuring request is initialized；

In embodiments of the present invention, step can include: core net is according to initialising subscriber facility information, to center cell Initialization context configuring request (Initial Context Setup Request) is sent, context configuring request is initialized Receive (Attach Accept) information including attachment；Center cell receives the initialization context configuring request that core net is sent, Initialization context configuring request includes that attachment receives information.

1313, safe mode command is sent to DU by CU；

In embodiments of the present invention, step can include: center cell is according to initialization context configuring request, to passing through Second downlink RRC transparent transmission message sends safe mode command (Security Mode Command) to distribution unit；Distribution is single Member receives the safe mode command that center cell is sent.

1314, safe mode command is sent to UE by DU；

In embodiments of the present invention, step can include: distribution unit sends safe mode command to user equipment, is used for User equipment completes safe mode command；User equipment receives the safe mode command that distribution unit is sent.

1315, the completion information of safe mode command is sent to DU by UE；

In embodiments of the present invention, step can include: user equipment completes security mode control, and sends out to distribution unit Send completion (Security Mode Complete) information of safe mode command；Distribution unit receives the peace that user equipment is sent The completion information of syntype order.

1316, the completion information of safe mode command is sent to CU by DU；

In embodiments of the present invention, step can include: distribution unit passes through third uplink RRC transparent transmission message, Xiang Zhongxin The completion information of unit transmission safe mode command；Center cell receives the completion letter that distribution unit sends safe mode command Breath.

1317, CU will be sent to DU for the second configuring request of first interface；

In embodiments of the present invention, step can include: center cell sends for first interface to distribution unit Two configuring requests, the second configuring request for first interface include the packet data polymerized agreement of Data Radio Bearer DRB PDCP information, for establishing the data transmitting channel for Data Radio Bearer (DRB, Data Radio Bears)；Distribution is single Member receives the second configuring request for first interface that center cell is sent, and the second configuring request for first interface includes The packet data polymerized agreement PDCP information of Data Radio Bearer DRB, for establishing the data transmission for being directed to Data Radio Bearer Channel.Illustratively, first interface here is Xn interface.

1318, DU will be sent to CU for the second configuration response of first interface；

In embodiments of the present invention, the step can include: distribution unit according to be directed to first interface the second configuring request, The second configuration response for being directed to first interface is sent to center cell；Center cell receives connecing for first for distribution unit transmission Second configuration response of mouth.

1319, the information of RRC connection reconfiguration is sent to DU by CU；

In embodiments of the present invention, step can include: center cell is by third downlink RRC transparent transmission message, to distribution Unit sends the information of RRC connection reconfiguration (RRC Connection Reconfiguration)；It is single that distribution unit receives center The information for the RRC connection reconfiguration that member is sent.

1320, the information of RRC connection reconfiguration is sent to UE by DU；

In embodiments of the present invention, step can include: distribution unit sends the letter of RRC connection reconfiguration to user equipment Breath carries out RRC connection reconfiguration for user equipment；User equipment receives the information for the RRC connection reconfiguration that distribution unit is sent.

1321, the completion information of RRC connection reconfiguration is sent to DU by UE；

In embodiments of the present invention, step can include: user equipment completes RRC connection reconfiguration, and sends out to distribution unit Send completion (RRC Connection Reconfiguration Complete) information of RRC connection reconfiguration；Distribution unit receives The completion information for the RRC connection reconfiguration that user equipment is sent.

1322, the completion information of RRC connection reconfiguration is sent to CU by DU；

In embodiments of the present invention, step can include: distribution unit passes through the 4th uplink RRC transparent transmission message, Xiang Zhongxin The completion information of unit transmission RRC connection reconfiguration；Center cell receives the completion letter for the RRC connection reconfiguration that distribution unit is sent Breath.

1323, initial context configuration response is sent to CN by CU；

In embodiments of the present invention, step can include: center cell sends initial context configuration response to core net (Initial Context Setup Response)；Core net receives the initial context configuration response that center cell is sent.

It should be noted that completion of the embodiment of the present invention is the process adhered to, wherein step 1313-1316,1319- 1323 be optional step.

In embodiments of the present invention, the process of Signalling exchange of the main definitions between CU and DU, completes the process of attachment. Attachment is network registration process of the UE before carrying out practical business, is a necessary process, user equipment only attachment at It just can receive the service for carrying out automatic network after function.In practical applications, the process that attachment is completed between CU and DU may include but not It is limited to above-mentioned the step of referring to.

It as shown in figure 14, is another embodiment schematic diagram of the method communicated in the embodiment of the present invention, comprising:

1401, Release radio resource request is sent to CU by DU；

In embodiments of the present invention, step can include: distribution unit sends Release radio resource request to center cell (Radio Resource Release Request), Release radio resource request include release cause (Release Cause)； Center cell receives the Release radio resource request that distribution unit is sent, and Release radio resource request includes release cause, specifically Flow definition see step 1401 shown in Figure 14.

1402, UE context release request is sent to CN by CU；

In embodiments of the present invention, step can include: center cell sends customer equipment context release to core net It requests (UE Context Release Request)；Core net receives the customer equipment context release that center cell is sent and asks It asks.

1403, UE context release command is sent to CU by CN；

In embodiments of the present invention, step can include: core net sends customer equipment context release to center cell It orders (UE Context Release Command)；Center cell receives the customer equipment context that core net is sent and discharges life It enables.

1404, the information of RRC Connection Release is sent to DU by CU；

In embodiments of the present invention, step can include: center cell is by the 5th uplink RRC transparent transmission message, to distribution Unit sends the information of RRC Connection Release (RRC Connection Release)；Distribution unit receives center cell and sends RRC The information of Connection Release.

1405, the information of RRC Connection Release is sent to UE by DU；

In embodiments of the present invention, step can include: distribution unit sends the letter of RRC Connection Release to user equipment Breath；User equipment receives the information for the RRC Connection Release that distribution unit is sent.

1406, Release radio resource order is sent to DU by CU；

In embodiments of the present invention, step can include: center cell sends Release radio resource order to distribution unit (Radio Resource Release Command), Release radio resource order include release cause (Release Cause), The reason of Release Cause instruction release；Distribution unit receives the Release radio resource order that center cell is sent, wireless to provide Source release command includes release cause.

1407, the information that Release radio resource is completed is sent to CU by DU；

In embodiments of the present invention, step can include: distribution unit sends Release radio resource to center cell and completes The information of (Radio Resource Release Complete)；Center cell receives the radio resource that distribution unit is sent and releases The information discharged.It should be noted that the detailed process of Release radio resource define see step 1406 in Figure 14 and 1407。

1408, the information that the release of UE context is completed is sent to CN by CU.

In embodiments of the present invention, step can include: center cell sends customer equipment context release to core net Complete the information of (UE Context Release Complete)；Core net receives the user equipment that center cell is sent or more The information that text release is completed.

It should be noted that embodiment shown in Figure 14 is realized on the basis of being the embodiment shown in Figure 13.At this In inventive embodiments, main definitions user equipment, CU, the process of the Signalling exchange between DU and core net completes terminal and releases The process put, for removing the last signal connection of terminal.In practical applications, the Signalling exchange of release is completed between CU and DU It may include but be not limited to above explained Signalling exchange.

What is be described below is the process about distinct interface switching, third interface and second interface, and illustratively, third connects Mouth may be simply referred to as NG1 interface, and the interface between CU and core net, second interface may be simply referred to as Xx interface, between CU and CU Interface, applied communication system includes: including core net, source center cell, target's center's unit, source distribution unit, mesh Mark distribution unit and user equipment.

It as shown in figure 15, is the process based on the switching of NG1 interface, for another of the method that communicates in the embodiment of the present invention Embodiment schematic diagram, comprising:

1501, measurement report is sent to DU by UE；

In embodiments of the present invention, step can include: user equipment sends measurement report to distribution unit (Measurement Report)；Distribution unit receives the measurement report that user equipment is sent.

1502, measurement report is sent to CU by uplink RRC transparent transmission message by DU；

In embodiments of the present invention, step can include: distribution unit controls transparent transmission message by ascending wireless resource (Uplink RRC Transport) sends measurement report to center cell；Center cell receives the measurement that distribution unit is sent Report.

1503, switching request is sent to core net by CU；

In embodiments of the present invention, step can include: center cell sends switching request (Handover to core net Required)；Core net receives the switching request that center cell is sent.

1504, switching request is sent to T-CU by core net；

In embodiments of the present invention, step can include: core net is sent out to target's center's unit (Target CU, T-CU) Send switching request (Handover Request)；Target's center's unit receives the switching request that core net is sent.In request target Heart unit configures radio resource.

1505, radio resource allocation request is sent to T-DU by T-CU；

In embodiments of the present invention, step can include: target's center's unit is to target distribution unit (Target DU, T- DU) radio resource allocation request (Radio Resource Allocation Request) is sent；Target distribution unit receives mesh Mark the radio resource allocation request that center cell is sent.DU is requested to distribute corresponding radio resource, such as: request distribution RLC money Source, MAC resource etc..

1506, radio resource allocation response is sent to target T-CU by T-DU, and radio resource allocation response includes wireless money Source information；

In embodiments of the present invention, step can include: target distribution unit sends radio resource to target's center's unit Assignment response (Radio Resource Allocation Response), radio resource allocation response include wireless resource information (Radio Resource Info)；Target's center's unit receives the radio resource allocation response that target distribution unit is sent, wirelessly Resource allocation response includes wireless resource information；T-DU passes through Radio after completing resource allocation, by the resource information distributed Resource Allocation Response (radio resource allocation response) returns to T-CU；Detailed process definition sees figure Step 1505 in 15 and 1506.

1507, Handover Request Acknowledge information is sent to CN by T-CU；

In embodiments of the present invention, step can include: target's center's unit sends Handover Request Acknowledge to core net (Handover Request Acknowledge) information；Core net receives the Handover Request Acknowledge letter that target's center's unit is sent Breath.

1508, switching command is sent to CU by core net；

In embodiments of the present invention, step can include: core net sends switching command (Handover to center cell Command)；Center cell receives the switching command that core net is sent.

1509, the information of RRC connection reconfiguration is sent to DU by downlink RRC transparent transmission message by CU；

In the embodiment of the present invention, the step can include: center cell sends downlink radio resource control thoroughly to distribution unit It passes message (Downlink RRC Transport), downlink radio resource control transparent transmission message includes wireless heterogeneous networks connection weight Information with (RRC Connection Reconfiguration)；Distribution unit receives the downlink that center cell is sent and wirelessly provides Source controls transparent transmission message, and downlink radio resource control transparent transmission message includes the information of wireless heterogeneous networks connection reconfiguration.

1510, the information of RRC connection reconfiguration is sent to UE by DU；

In the embodiment of the present invention, the step can include: distribution unit sends wireless heterogeneous networks connection weight to user equipment The information matched, the information of wireless heterogeneous networks connection reconfiguration include executing the information of switching；User equipment receives distribution unit hair The information for the wireless heterogeneous networks connection reconfiguration sent, the information of wireless heterogeneous networks connection reconfiguration include executing the information of switching. The information of wireless heterogeneous networks connection reconfiguration includes executing switching (Mobility Control Info) information.

1511, UE initiates the process that accidental channel accesses to T-DU；

In embodiments of the present invention, step can include: user equipment sends accidental channel access to target distribution unit It requests (Random Access Channel Request)；The accidental channel that target distribution unit is sent to reception user equipment Access request；Target distribution unit sends accidental channel access response (Random Access Channel to user equipment Response)；User equipment receives the accidental channel that target distribution unit is sent and accesses response.

1512, the completion information of RRC connection reconfiguration is sent to T-DU by UE；

In the embodiment of the present invention, the step can include: user equipment completes wireless heterogeneous networks connection reconfiguration, and to target Completion (the RRC Connection Reconfiguration of distribution unit transmission wireless heterogeneous networks connection reconfiguration Complete) information.Target distribution unit receives the completion information for the wireless heterogeneous networks connection reconfiguration that user equipment is sent.

1513, the completion information of RRC connection reconfiguration is sent to T-CU by uplink RRC transparent transmission message by T-DU；

In the embodiment of the present invention, the step can include: target distribution unit controls transparent transmission message by ascending wireless resource, The completion information of wireless heterogeneous networks connection reconfiguration is sent to target's center's unit.Target's center's unit receives target distribution unit The completion information of the wireless heterogeneous networks connection reconfiguration of transmission.

1514, switching notice is sent to core net by T-CU；

In the embodiment of the present invention, the step can include: target's center's unit sends switching notice (Handover to core net Notify)；Core net receives the switching notice that target's center's unit is sent.

1515, UE context release command is sent to CU by core net；

In the embodiment of the present invention, the step can include: core net sends customer equipment context release life to center cell Enable (UE Context Release Command)；Center cell receives the customer equipment context that core net is sent and discharges life It enables.

1516, Release radio resource order is sent to DU by CU；

In the embodiment of the present invention, the step can include: center cell sends Release radio resource order to distribution unit (Radio Resource Release Command)；Distribution unit receives the Release radio resource order that center cell is sent. The relevant all information of distribution unit release terminal are requested, such as: wireless resource configuration or UE contextual information or RAB (radio access bearer, radio access bearer) relevant information etc..

1517, the information that Release radio resource is completed is sent to CU by DU；

In the embodiment of the present invention, the step can include: distribution unit sends what Release radio resource was completed to center cell Information.Center cell receives the information that the Release radio resource that distribution unit is sent is completed；DU returns to Radio Resource Release Complete message notifies CU to complete the release of user information, after receiving information, also discharge it includes CU to CU The relevant information of this user, such as: UE contextual information or RAN (Radio Access Network, wireless access network) are related Information etc..

1518, the information that the release of UE context is completed is sent to core net by CU；

In the embodiment of the present invention, the step can include: center cell sends customer equipment context to core net and releases At the information of (UE Context Release Complete).Core net receives the customer equipment context that center cell is sent Discharge the information completed.

It should be noted that embodiment shown in figure 15 can carry out on the basis of the embodiment shown in Figure 13 or 14, figure The timing of embodiment shown in embodiment shown in 15 and Figure 14 is without limitation.

In embodiments of the present invention, in the embodiment of the present invention, the process of Signalling exchange of the main definitions between CU and DU, Complete the process switched based on CU and the interface of core net.The small of another base station is switched to from the cell of a base station Area, by CU, DU, T-CU, T-DU in the embodiment of the present invention, the Signalling exchange between core net and UE completes the process of switching, There is a specific definition to the Signalling exchange between CU and DU, certainly, in practical applications, interface is completed between CU and DU The Signalling exchange of switching may include but be not limited to above explained Signalling exchange.

It as shown in figure 16, is the process based on the switching of Xx interface, for another of the method that communicates in the embodiment of the present invention Embodiment schematic diagram, comprising:

1601, measurement report is sent to DU by UE；

1602, measurement report is sent to CU by uplink RRC transparent transmission message by DU；

1603, switching request is sent to T-CU by CU；

In embodiments of the present invention, step can include: center cell sends switching demand to target's center's unit (Handover Demand)；Target's center's unit receives the switching demand that center cell is sent.

1604, radio resource allocation request is sent to T-DU by T-CU；

In embodiments of the present invention, step can include: target's center's unit sends radio resource to target distribution unit Distribution request (Radio Resource Allocation Request), request distribute corresponding radio resource, such as: request Distribution RLC (Radio Link Control, radio link layer control protocol) resource, MAC (Medium Access Control, Medium access control layer) resource etc.；Target distribution unit receives the radio resource allocation request that target's center's unit is sent.

1605, radio resource allocation response is sent to T-CU by T-DU；

In embodiments of the present invention, the step can include: after target's center's unit completes radio resource allocation, target distribution Unit sends radio resource allocation response (Radio Resource Allocation Response), nothing to target's center's unit The response of line resource allocation includes wireless resource information；Target's center's unit receives the radio resource allocation that target distribution unit is sent Response, radio resource allocation response include wireless resource information.

1606, T-CU is sent to CU for requirement validation information is switched；

In embodiments of the present invention, step can include: target's center's unit sends switching requirement validation to center cell (Handover Demand Acknowledge) information；Center cell receives the switching requirement validation that target's center's unit is sent Information.After target's center's unit completes resource allocation, switching requirement validation information is sent to center cell, informs its target's center The radio-resource-configuration for user is completed in unit.Wireless resource configuration is carried in switching requirement validation information (Target-CU/DU Radio Resource Configuration Info), specific flow definition is seen shown in Figure 16 Step 1603 and 1606.

1607, the information of RRC connection reconfiguration is sent to DU by downlink RRC transparent transmission message by CU；

In embodiments of the present invention, step can include: center cell sends downlink radio resource control to distribution unit Transparent transmission message (Downlink RRC Transport), downlink radio resource control transparent transmission message include wireless heterogeneous networks connection The information of (RRC Connection Reconfiguration) is reconfigured；It is wireless that distribution unit receives the downlink that center cell is sent Resources control transparent transmission message, downlink radio resource control transparent transmission message include the information of wireless heterogeneous networks connection reconfiguration.

1608, the information of RRC connection reconfiguration is sent to UE by DU；

In embodiments of the present invention, step can include: distribution unit sends wireless heterogeneous networks connection to user equipment The information of reconfiguration, the information of wireless heterogeneous networks connection reconfiguration include mobile control information (Mobility Control Info)； User equipment receives the information for the wireless heterogeneous networks connection reconfiguration that distribution unit is sent, the letter of wireless heterogeneous networks connection reconfiguration Breath includes mobile control information.

1609, UE initiates the process that accidental channel accesses to T-DU；

1610, the completion information of RRC connection reconfiguration is sent to T-DU by UE；

In embodiments of the present invention, the step can include: after user equipment completes wireless heterogeneous networks connection reconfiguration, and to Completion (the RRC Connection Reconfiguration of target distribution unit transmission wireless heterogeneous networks connection reconfiguration Complete) information.Target distribution unit receives the completion information for the wireless heterogeneous networks connection reconfiguration that user equipment is sent.

1611, the completion information of RRC connection reconfiguration is sent to T-CU by uplink RRC transparent transmission message by T-DU；

In embodiments of the present invention, step can include: target distribution unit controls transparent transmission by ascending wireless resource and disappears Breath sends the completion information of wireless heterogeneous networks connection reconfiguration to target's center's unit.Target's center's unit receives target distribution The completion information for the wireless heterogeneous networks connection reconfiguration that unit is sent.

1612, path switching request is sent to core net by T-CU；

In embodiments of the present invention, step can include: target's center's unit is to core net transmitting path switching request (Path Switch Request)；Core net receives the path switching request that target's center's unit is sent.

1613, path switching confirmation is sent to T-CU by core net；

In embodiments of the present invention, step can include: core net switches to target's center's unit transmitting path to be confirmed (Path Switch Request Acknowledge)；Target's center's unit receives the path that core net is sent and switches confirmation.

1614, UE context release command is sent to CU by core net；

1615, Release radio resource order is sent to DU by CU；

1616, the information that Release radio resource is completed is sent to CU by DU；

1617, the information that the release of UE context is completed is sent to core net by CU；

It should be noted that embodiment shown in Figure 16 can carry out on the basis of the embodiment shown in Figure 13 or 14, figure The timing of embodiment shown in embodiment shown in 16 and Figure 14 is without limitation.

In embodiments of the present invention, in the embodiment of the present invention, the process of Signalling exchange of the main definitions between CU and DU, Complete the process switched based on CU and T-CU interface.The cell of another base station, this hair are switched to from the cell of a base station By CU, DU, T-CU, T-DU in bright embodiment, the Signalling exchange between core net and UE completes the process of switching, to CU and Signalling exchange between DU has a specific definition, certainly, complete interface switching in practical applications, between CU and DU Signalling exchange may include but be not limited to above explained Signalling exchange.

It should be understood that the flow definition of above-mentioned illustrated several embodiments is only one of to illustrate, composition pair The restriction of this programme protection scope can also complete the communication such as attachment removal, switching terminal by Signalling exchange between CU and DU.

Two, for above-mentioned system architecture Figure 11 and Figure 12, technical solution of the present invention is done by way of examples below One explanation, as shown in figure 17, for one embodiment schematic diagram of the method communicated in the embodiment of the present invention, comprising:

1701, accidental channel access request is sent to DU by UE；

1702, accidental channel access response is sent to UE by DU；

1703, RRC connection request is sent to DU by UE；

1704, RRC connection request is sent to CU by DU；

In embodiments of the present invention, step 1701- step 1704 and the step 1301-1304 in embodiment shown in Figure 13 Identical, details are not described herein again.

1705, RRC connection configuration is sent to DU by CU；

In embodiments of the present invention, step can include: center cell passes through the first downlink RRC transparent transmission message (Downlink RRC Transport) sends RRC connection configuration (RRC Connection Setup) to distribution unit；Distribution Unit receives the RRC connection configuration that center cell is sent.

1706, RRC connection configuration is sent to UE by DU；

1707, the completion information that RRC connection configures is sent to DU by UE；

In embodiments of the present invention, step can include: user equipment completes RRC connection configuration, and sends out to distribution unit The completion information for sending RRC connection to configure；Distribution unit receives the completion (RRC for the RRC connection configuration that user equipment is sent Connection Setup Complete) information, the completion information of RRC connection configuration includes attach request (Attach Request)。

1708, DU is sent to CU for UE contextual information is created；

In embodiments of the present invention, step can include: distribution unit sends creation UE contextual information to center cell (Create UE Context Message), creation UE contextual information includes attach request (Attach Request)；Center Unit receives the creation UE contextual information that distribution unit is sent, and creation UE contextual information includes attach request.Specific stream Cheng Dingyi sees the step 1708 in Figure 17.

DU sends Create UE Context Message (creation UE contextual information) message to CU, allows CU recording needle To the context of this user, in this message, the ID (identity recognition number) of UE can be carried, the ability information (if there is) of UE is whole Terminate into RAT (RAT, Radio Access Technologies, wireless access technology) type and UE RRC state information Deng to CU.

1709, CU is sent to core net for UE information is initialized；

1710, initial context configuring request is sent to CU by core net；

1711, radio bearer is established request and is sent to DU by CU；

In embodiments of the present invention, be the process of radio bearer foundation: one, center cell sends nothing to distribution unit Request is established in line carrying, and it includes establishing the resource information of radio bearer that radio bearer, which establishes request,；It is single that center cell receives distribution The radio bearer that member is sent establishes response.

Can include: (1) resource information for establishing radio bearer includes about the packet data polymerized of Signaling Radio Bearer SRB Agreement PDCP information；Center cell sends Signaling Radio Bearer to distribution unit and establishes request；Center cell receives distribution unit The Signaling Radio Bearer of transmission establishes response, and it includes security information that Signaling Radio Bearer, which establishes response,.

(2) resource information for establishing radio bearer includes packet data polymerized agreement about Data Radio Bearer DRB PDCP information；Center cell sends Data Radio Bearer to distribution unit and establishes request；Center cell receives distribution unit and sends Data Radio Bearer establish response, Data Radio Bearer establish response include security information.

In embodiments of the present invention, step can include: center cell sends radio bearer to distribution unit and establishes request (Radio Bearer Establish Request), it includes being directed to signaling (SRB)/data (DRB) that radio bearer, which establishes request, Packet Data Convergence Protocol (PDCP) information of radio bearer；Distribution unit receives the radio bearer foundation that center cell is sent and asks It asks, it includes for signaling/Data Radio Bearer Packet Data Convergence Protocol information that radio bearer, which establishes request,.

It should be noted that is established here is established for Signaling Radio Bearer (SRB, Signalling Radio ) and/or the data transmitting channel of Data Radio Bearer (DRB, Data Radio Bears) Bears.Specifically, can refer to Figure 13 In step 1305 and 1306 and 1317 and 1318.

1712, safe mode command is sent to UE by DU；

In embodiments of the present invention, step can include: distribution unit sends safe mode command to user equipment (Security Mode Command)；User equipment receives the safe mode command that distribution unit is sent.

1713, the completion information of safe mode command is sent to DU by UE；

1714, the information of RRC connection reconfiguration is sent to UE by DU；

In embodiments of the present invention, step can include: distribution unit sends wireless heterogeneous networks connection to user equipment The information of (RRC Connection Reconfiguration) is reconfigured；User equipment receives the radio resource that distribution unit is sent Control the information of connection reconfiguration.

1715, the completion information of RRC connection reconfiguration is sent to DU by UE；

In embodiments of the present invention, step can include: user equipment completes wireless heterogeneous networks connection reconfiguration (RRC Connection Reconfiguration Complete), and the complete of wireless heterogeneous networks connection reconfiguration is sent to distribution unit At information.Distribution unit receives the completion information for the wireless heterogeneous networks connection reconfiguration that user equipment is sent.

1716, radio bearer is established response and is sent to CU by DU；

In embodiments of the present invention, be the process of radio bearer foundation: two, distribution unit receives center cell and sends Radio bearer establish request, it includes establishing the resource information of radio bearer that radio bearer, which establishes request,；Distribution unit is according to building The resource information of vertical radio bearer establishes radio bearer；Distribution unit sends radio bearer to center cell and establishes response.

Can include: (1) resource information for establishing radio bearer includes about the packet data polymerized of Signaling Radio Bearer SRB Agreement PDCP information；Distribution unit receives the Signaling Radio Bearer that center cell is sent and establishes request；Distribution unit according to about Packet data polymerized agreement PDCP information, the wireless spread-spectrum technology RLC information of distribution unit and the media of Signaling Radio Bearer SRB Access control MAC information, establishes Signaling Radio Bearer；Distribution unit sends Signaling Radio Bearer to center cell and establishes response, It includes security information that Signaling Radio Bearer, which establishes response,.

(2) resource information for establishing radio bearer includes packet data polymerized agreement about Data Radio Bearer DRB PDCP information；Distribution unit receives the Data Radio Bearer that center cell is sent and establishes request；Distribution unit is according to about data Packet data polymerized agreement PDCP information, the wireless spread-spectrum technology RLC information of distribution unit and the media access of radio bearer DRB MAC information is controlled, Data Radio Bearer is established；Distribution unit sends Data Radio Bearer to center cell and establishes response, data It includes security information that radio bearer, which establishes response,.

In embodiments of the present invention, step can include: distribution unit sends radio bearer to center cell and establishes response (Radio Bearer Establish Response), it includes security information (Security that radio bearer, which establishes response, Info).Center cell receives the radio bearer that distribution unit is sent and establishes response, and it includes safety letter that radio bearer, which establishes response, Breath.Here security information, including information such as the encryption and decryption modes determining with terminal joint.

1717, initial context configuration response is sent to core net by CU.

In embodiments of the present invention, step can include: center cell sends initial context configuration response to core net (Initial Context Setup Response).Core net receives the initial context configuration response that center cell is sent.

It should be noted that completion of the embodiment of the present invention is the process adhered to, wherein step 1701-1706,1712- 1715 be optional step.

In the embodiment of the present invention, the process of Signalling exchange of the main definitions between CU and DU completes the process of attachment.It is attached Be network registration process of the UE before carrying out practical business, be a necessary process, user equipment is only adhering to successfully It just can receive the service for carrying out automatic network afterwards.In practical applications, the process that attachment is completed between CU and DU may include but unlimited In above-mentioned the step of referring to.

It as shown in figure 18, is another embodiment schematic diagram of the method communicated in the embodiment of the present invention, comprising:

1801, Release radio resource request is sent to CU by DU；

In embodiments of the present invention, step can include: distribution unit sends Release radio resource request to center cell (Radio Resource Release Request), Release radio resource request include release cause (Release Cause)； Center cell receives the Release radio resource request that distribution unit is sent, and Release radio resource request includes release cause.

1802, UE context release request is sent to CN by CU；

1803, UE context release command is sent to CU by CN；

1804, RRC connection release request is sent to DU by CU；

In embodiments of the present invention, step can include: center cell sends wireless heterogeneous networks release to distribution unit It requests (RRC Release Request), wireless heterogeneous networks release request includes release cause (Release Cause), Release Cause indicates the concrete reason of release terminal；Distribution unit receives the wireless heterogeneous networks that center cell is sent Release request, wireless heterogeneous networks release request includes release cause.

1805, the information of RRC Connection Release is sent to UE by DU；

In embodiments of the present invention, step can include: distribution unit sends wireless heterogeneous networks connection to user equipment The information (RRC Connection Release) of release；User equipment receives the wireless heterogeneous networks connection that distribution unit is sent The information of release.

1806, RRC connection release response is sent to CU by DU；

In embodiments of the present invention, step can include: distribution unit sends wireless heterogeneous networks connection to center cell Release response (RRC Release Response).Center cell receives the wireless heterogeneous networks Connection Release that distribution unit is sent Response.DU returns to RRC Release Response message to CU, indicates that CU completes resource release.

1807, the information that the release of UE context is completed is sent to CN by CU.

It should be noted that embodiment shown in Figure 18 is realized on the basis of being the embodiment shown in Figure 17.At this In inventive embodiments, main definitions user equipment, CU, the process of the Signalling exchange between DU and core net completes terminal and releases The process put, for removing the last signal connection of terminal.In practical applications, the Signalling exchange of release is completed between CU and DU It may include but be not limited to above explained Signalling exchange.

It as shown in figure 19, is the process based on the switching of NG1 interface, for another of the method that communicates in the embodiment of the present invention Embodiment schematic diagram, comprising:

1901, measurement report is sent to DU by UE；

1902, measurement report is sent to CU by DU；

In embodiments of the present invention, step can include: distribution unit sends measurement report to center cell；Center cell Receive the measurement report that distribution unit is sent.

1903, switching request is sent to core net by CU；

1904, switching request is sent to T-CU by core net；

1905, radio resource allocation request is sent to T-DU by T-CU；

1906, radio resource allocation response is sent to target T-CU by T-DU；

In embodiments of the present invention, step can include: target distribution unit sends radio resource to target's center's unit Assignment response (Radio Resource Allocation Response)；Target's center's unit receives target distribution unit and sends Radio resource allocation response；T-DU passes through Radio Resource after completing resource allocation, by the resource information distributed Allocation Response (radio resource allocation response) returns to T-CU；Detailed process defines the step seen in Figure 19 Rapid 1905 and 1906.

1907, Handover Request Acknowledge information is sent to CN by T-CU；

1908, switching command is sent to CU by core net；

1909, the information of switching display is sent to DU by CU；

In the embodiment of the present invention, the step can include: center cell sends the information of switching display to distribution unit (Handover Indication), the information for switching display include executing handover information (Mobility Control Info)； Distribution unit receives the information for sending switching to show that center cell is sent, and the information for switching display includes executing handover information.

1910, the information of RRC connection reconfiguration is sent to UE by DU；

In the embodiment of the present invention, the step can include: distribution unit sends wireless heterogeneous networks connection weight to user equipment The information matched, the information of wireless heterogeneous networks connection reconfiguration include executing the information of switching；User equipment receives distribution unit hair The information for the wireless heterogeneous networks connection reconfiguration sent, the information of wireless heterogeneous networks connection reconfiguration include executing the information of switching. The information of wireless heterogeneous networks connection reconfiguration includes executing handover information (Mobility Control Info).

1911, UE initiates the process that accidental channel accesses to T-DU；

1912, the completion information of RRC connection reconfiguration is sent to T-DU by UE；

1913, switching is completed information and is sent to T-CU by T-DU；

In the embodiment of the present invention, the step can include: target distribution unit sends switching to target's center's unit and completes letter It ceases (Handover Complete).Target's center's unit receives the switching that target distribution unit is sent and completes information.

1914, switching notice is sent to core net by T-CU；

1915, UE context release command is sent to CU by core net；

1916, Release radio resource order is sent to DU by CU；

1917, the information that Release radio resource is completed is sent to CU by DU；

1918, the information that the release of UE context is completed is sent to core net by CU；

It should be noted that embodiment shown in Figure 19 can carry out on the basis of the embodiment shown in Figure 17 or 18, figure The timing of embodiment shown in embodiment shown in 19 and Figure 18 is without limitation.

It as shown in figure 20, is the process based on the switching of Xx interface, for another of the method that communicates in the embodiment of the present invention Embodiment schematic diagram, comprising:

2001, measurement report is sent to DU by UE；

2002, measurement report is sent to CU by uplink RRC transparent transmission message by DU；

2003, switching request is sent to T-CU by CU；

2004, radio resource allocation request is sent to T-DU by T-CU；

2005, radio resource allocation response is sent to T-CU by T-DU；

2006, T-CU is sent to CU for requirement validation information is switched；

In embodiments of the present invention, step can include: target's center's unit sends switching requirement validation to center cell (Handover Demand Acknowledge) information；Center cell receives the switching requirement validation that target's center's unit is sent Information.After target's center's unit completes resource allocation, switching requirement validation information is sent to center cell, informs its target's center The radio-resource-configuration for user is completed in unit.Wireless resource configuration is carried in switching requirement validation information (Target-CU/DU Radio Resource Configuration Info), specific flow definition is seen shown in Figure 20 Step 2003 and 2006.

2007, the information of RRC connection reconfiguration is sent to DU by downlink RRC transparent transmission message by CU；

2008, the information of RRC connection reconfiguration is sent to UE by DU；

2009, UE initiates the process that accidental channel accesses to T-DU；

2010, the completion information of RRC connection reconfiguration is sent to T-DU by UE；

2011, the completion information of RRC connection reconfiguration is sent to T-CU by uplink RRC transparent transmission message by T-DU；

2012, path switching request is sent to core net by T-CU；

2013, path switching confirmation is sent to T-CU by core net；

2014, UE context release command is sent to CU by core net；

2015, Release radio resource order is sent to DU by CU；

2016, the information that Release radio resource is completed is sent to CU by DU；

2017, the information that the release of UE context is completed is sent to core net by CU；

It should be noted that embodiment shown in Figure 20 can carry out on the basis of the embodiment shown in Figure 17 or 18, figure The timing of embodiment shown in embodiment shown in 20 and Figure 18 is without limitation.

The method communicated in the embodiment of the present invention is illustrated above, below to the distribution unit in the present invention in Heart unit is illustrated, and communication system includes core net, center cell, distribution unit and user equipment, as shown in figure 21, for this One embodiment schematic diagram of distribution unit in inventive embodiments, comprising:

Receiving module 2101, for receiving the wireless link request of center cell transmission, wireless link request Resource information including establishing Radio Link；

Module 2102 is established, for establishing Radio Link according to the resource information for establishing Radio Link；

Sending module 2103, for sending wireless link response to center cell.

Optionally, in embodiments of the present invention, sending module 2103 are also used to execute step shown in above-mentioned Figure 13 1302,1304,1306,1308,1310,1314,1316,1318,1320,1322.

Optionally, in embodiments of the present invention, sending module 2103 are also used to execute step shown in above-mentioned Figure 14 1401,1405,1407；

Optionally, in embodiments of the present invention, sending module 2103 are also used to execute step shown in above-mentioned Figure 15 1502,1510,1517；

Optionally, in embodiments of the present invention, sending module 2103 are also used to execute step shown in above-mentioned Figure 16 1602,1608,1616；

Optionally, in embodiments of the present invention, sending module 2103 are also used to execute step shown in above-mentioned Figure 17 1702,1704,1706,1708,1712,1714,1716；

Optionally, in embodiments of the present invention, sending module 2103 are also used to execute step shown in above-mentioned Figure 18 1801,1805,1806；

Optionally, in embodiments of the present invention, sending module 2103 are also used to execute step shown in above-mentioned Figure 19 1902,1910,1917；

Optionally, in embodiments of the present invention, sending module 2103 are also used to execute step shown in above-mentioned Figure 20 2002,2008,2016.

It as shown in figure 22, is one embodiment schematic diagram of target distribution of embodiment of the present invention unit,

Receiving module 2201, for receiving the radio resource allocation request of target's center's unit transmission；

Distribution module 2202, for carrying out radio resource allocation according to Target Wireless resource allocation request；

Sending module 2203, for sending radio resource allocation response, radio resource allocation response to target's center's unit Information including radio resource allocation.

Optionally, in embodiments of the present invention, sending module 2203 are also used to execute step shown in above-mentioned Figure 15 1506,1513；

Optionally, in embodiments of the present invention, sending module 2203 are also used to execute step shown in above-mentioned Figure 16 1605,1611；

Optionally, in embodiments of the present invention, sending module 2203 are also used to execute step shown in above-mentioned Figure 19 1906,1913；

Optionally, in embodiments of the present invention, it is also used to execute step 2005 shown in above-mentioned Figure 20,2011.

It as shown in figure 23, is one embodiment schematic diagram of center cell of the embodiment of the present invention, comprising:

Sending module 2301, for sending wireless link request to distribution unit, wireless link request includes Establish the resource information of Radio Link；

Receiving module 2302, for receiving the wireless link response of distribution unit transmission.

Optionally, in embodiments of the present invention, sending module 2301 are also used to execute step shown in above-mentioned Figure 13 1305,1307,1311,1313,1317,1319,1323；

Optionally, in embodiments of the present invention, sending module 2301 are also used to execute step shown in above-mentioned Figure 14 1402,1404,1408；

Optionally, in embodiments of the present invention, sending module 2301 are also used to execute step shown in above-mentioned Figure 15 1503,1509,1516,1518；

Optionally, in embodiments of the present invention, sending module 2301 are also used to execute step shown in above-mentioned Figure 16 1603,1607,1615,1617；

Optionally, in embodiments of the present invention, sending module 2301 are also used to execute step shown in above-mentioned Figure 17 1705,1709,1711,1717；

Optionally, in embodiments of the present invention, sending module 2301 are also used to execute step shown in above-mentioned Figure 18 1802,1804,1807；

Optionally, in embodiments of the present invention, sending module 2301 are also used to execute step shown in above-mentioned Figure 19 1903,1909,1916,1918；

Optionally, in embodiments of the present invention, sending module 2301 are also used to execute step shown in above-mentioned Figure 20 2003,2007,2015,2017.

It as shown in figure 24, is one embodiment schematic diagram of target's center of embodiment of the present invention unit, comprising:

Sending module 2401, for sending radio resource allocation request to target distribution unit；

Receiving module 2402, for receiving the radio resource allocation response of target distribution unit transmission, radio resource allocation Response includes the information of radio resource allocation.

Optionally, in embodiments of the present invention, sending module 2401 are also used to execute step shown in above-mentioned Figure 15 1505,1507,1514；

Optionally, in embodiments of the present invention, sending module 2401 are also used to execute step shown in above-mentioned Figure 16 1604,1606,1612；

Optionally, in embodiments of the present invention, sending module 2401 are also used to execute step shown in above-mentioned Figure 19 1905,1907,1914；

Optionally, in embodiments of the present invention, sending module 2401 are also used to execute step shown in above-mentioned Figure 20 2004,2006,2012.

It as shown in figure 25, is another embodiment schematic diagram of distribution unit in the embodiment of the present invention, comprising:

The distribution unit can generate bigger difference because configuration or performance are different, may include transceiver 2501, and one A or more than one central processing unit (central processing units, CPU) 2502 (for example, one or more Processor) and memory 2503, the storage medium 2504 of one or more storage application programs 25041 or data 25042 (such as one or more mass memory units).Wherein, memory 2503 and storage medium 2504 can be of short duration storage Or persistent storage.The program for being stored in storage medium 2504 may include one or more modules (not showing in Figure 25), Each module may include to the series of instructions operation in distribution unit.Further, central processing unit 2502 can be set It is set to and is communicated with storage medium 2504, the series of instructions operation in storage medium 2504 is executed on distribution unit.

In embodiments of the present invention, transceiver 2501, for receiving the wireless link request of center cell transmission, nothing It includes establishing the resource information of Radio Link that wired link, which establishes request,；Wireless link response is sent to center cell；

Central processing unit 2502, for establishing Radio Link according to the resource information for establishing Radio Link.

It as shown in figure 26, is another embodiment schematic diagram of target distribution unit in the embodiment of the present invention, comprising:

The target distribution unit can generate bigger difference because configuration or performance are different, may include transceiver 2601, one or more central processing units (central processing units, CPU) 2602 is (for example, one or one A above processor) and memory 2603, storage Jie of one or more storage application programs 26041 or data 26042 Matter 2604 (such as one or more mass memory units).Wherein, memory 2603 and storage medium 2604 can be short Temporary storage or persistent storage.The program for being stored in storage medium 2604 may include that one or more modules (do not have in Figure 26 Show), each module may include to the series of instructions operation in target distribution unit.Further, central processing unit 2602 can be set to communicate with storage medium 2604, and a series of fingers in storage medium 2604 are executed on target distribution unit Enable operation.

In embodiments of the present invention, transceiver 2601, the radio resource allocation for receiving the transmission of target's center's unit are asked It asks；Radio resource allocation response is sent to target's center's unit, radio resource allocation response includes the information of radio resource allocation；

Central processing unit 2602, for carrying out radio resource allocation according to Target Wireless resource allocation request.

It as shown in figure 27, is another embodiment schematic diagram of center of embodiment of the present invention cloth unit, comprising:

Second equipment can generate bigger difference because configuration or performance are different, may include transceiver 2701, and one A or more than one central processing unit (central processing units, CPU) 2702 (for example, one or more Processor) and memory 2703, the storage medium 2704 of one or more storage application programs 27041 or data 27042 (such as one or more mass memory units).Wherein, memory 2703 and storage medium 2704 can be of short duration storage Or persistent storage.The program for being stored in storage medium 2704 may include one or more modules (not showing in Figure 27), Each module may include to the series of instructions operation in the cloth unit of center.Further, central processing unit 2702 can be with It is set as communicating with storage medium 2704, the series of instructions operation in storage medium 2704 is executed on the cloth unit of center.

In embodiments of the present invention, transceiver 2701, for sending wireless link request, radio chains to distribution unit It includes establishing the resource information of Radio Link that request is established on road；Receive the wireless link response that distribution unit is sent.

It as shown in figure 28, is another embodiment schematic diagram of target's center of embodiment of the present invention cloth unit, comprising:

Target's center's cloth unit can generate bigger difference because configuration or performance are different, may include transceiver 2801, one or more central processing units (central processing units, CPU) 2802 is (for example, one or one A above processor) and memory 2803, storage Jie of one or more storage application programs 28041 or data 28042 Matter 2804 (such as one or more mass memory units).Wherein, memory 2803 and storage medium 2804 can be short Temporary storage or persistent storage.The program for being stored in storage medium 2804 may include that one or more modules (do not have in Figure 28 Show), each module may include to the series of instructions operation in target's center's cloth unit.Further, central processing Device 2802 can be set to communicate with storage medium 2804, execute the system in storage medium 2804 on heart cloth unit in the target Column instruction operation.

In embodiments of the present invention, transceiver 2801, for sending radio resource allocation request to target distribution unit；It connects The radio resource allocation response that target distribution unit is sent is received, radio resource allocation response includes the information of radio resource allocation.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.

In several embodiments provided herein, it should be understood that disclosed system, device and method can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit It closes or communicates to connect, can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of software functional units.

If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including some instructions are used so that a computer Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey The medium of sequence code.

The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.

Claims

1. a kind of method of communication, which is characterized in that the method is applied to communication system, and the communication system includes core Net, center cell, distribution unit and user equipment, comprising:

The distribution unit receives the wireless link request that the center cell is sent, the wireless link request packet Include the resource information for establishing Radio Link；

The distribution unit establishes Radio Link according to the resource information for establishing Radio Link；

The distribution unit sends wireless link response to the center cell；

The resource information for establishing Radio Link includes the packet data polymerized agreement PDCP letter about Signaling Radio Bearer SRB Breath；

The distribution unit receives the wireless link request that the center cell is sent, comprising:

The distribution unit receives the signaling wireless link request that the center cell is sent；

The distribution unit establishes Radio Link according to the resource information for establishing Radio Link, comprising:

The distribution unit is according to about the packet data polymerized agreement PDCP information of Signaling Radio Bearer SRB, described point The wireless spread-spectrum technology RLC information and media access control MAC information of cloth unit, establish signaling Radio Link；

The distribution unit sends the wireless link response to the center cell, comprising:

The distribution unit sends the response of signaling wireless link to the center cell, and the signaling wireless link is rung It should include the wireless spread-spectrum technology RLC information or the media access control MAC information；

Alternatively,

The resource information for establishing Radio Link includes the packet data polymerized agreement PDCP letter about Data Radio Bearer DRB Breath；

The distribution unit receives the data wireless link request that the center cell is sent；

The distribution unit is according to about the packet data polymerized agreement PDCP information of Data Radio Bearer DRB, described point The wireless spread-spectrum technology RLC information and media access control MAC information of cloth unit, establish data Radio Link；

The distribution unit sends the response of data wireless link to the center cell, and the data wireless link is rung It should include the wireless spread-spectrum technology RLC information or the media access control MAC information.

2. the method according to claim 1, wherein the method also includes:

The distribution unit controls RRC transparent transmission message by ascending wireless resource, by first object information to the center cell It sends, the first object information is that the user equipment is sent.

3. the method according to claim 1, wherein the method also includes:

The distribution unit receives the second target information that the center cell is sent by downlink RRC transparent transmission message.

4. the method according to claim 1, wherein the distribution unit is by uplink RRC transparent transmission message, by the One target information is sent to the center cell, comprising:

The distribution unit is sent RRC connection request to the center cell by the first uplink RRC transparent transmission message；

The distribution unit receives the second target information that the center cell is sent by downlink RRC transparent transmission message, comprising:

The distribution unit receives the RRC connection configuration that the center cell is sent by the first downlink RRC transparent transmission message；

The distribution unit is sent first object information to the center cell by uplink RRC transparent transmission message, further includes:

The distribution unit is by the second uplink RRC transparent transmission message, and completion information that RRC connection is configured is to the center cell It sends, the completion information of the RRC connection configuration includes attach request.

5. method according to claim 1 to 4, which is characterized in that the method also includes:

The distribution unit receives the Release radio resource order that the center cell is sent, the Release radio resource order packet Include release cause；

The distribution unit sends the information that the Release radio resource is completed to the center cell.

6. method according to claim 1 to 4, which is characterized in that the communication system further includes target's center's unit With target distribution unit, the method also includes:

The distribution unit is sent first object information to the center cell by uplink RRC transparent transmission message, comprising:

For the distribution unit by the 5th uplink RRC transparent transmission message, Xiang Suoshu center cell sends measurement report, the measurement report Accuse the measurement report information for the user equipment.

7. method according to claim 1 to 4, which is characterized in that the center cell is for managing multiple standards The non real-time control section of website, the center cell include access polymer layer control plane, access polymerization layer user surface and are directed to The radio access layer control plane of user；

The access polymer layer control plane, the control plane of the website for managing the multiple standard；

The access polymerize layer user surface, the user face of the website for managing the multiple standard；

The radio access layer control plane for user, the management for the wireless connection for user；The distribution unit For managing the real-time control part of the website of multiple standards, the distribution unit includes the radio access layer control for cell Face and wireless access layer user surface；

The radio access layer control plane for cell, for being directed to the management of cell；

Wherein, the interface between the center cell and the distribution unit is first interface, and the first interface includes control Face first interface and user face first interface；

The protocol stack of user face first interface, based on agreement include general packet wireless service tunnel protocol, transmission control Agreement and User Datagram Protocol processed, for the data transmission between the center cell and the distribution unit；

Interface between first center cell and the second center cell is second interface, and the second interface includes control plane second Interface and user face second interface；

The protocol stack of the control plane second interface, based on agreement include the second interface application protocol and the flow control Transport protocol processed, for the signalling between first center cell and second center cell；

The protocol stack of user face second interface, based on agreement include the general packet wireless service tunnel protocol and institute User Datagram Protocol is stated, for the data transmission between first center cell and second center cell；

Interface between the center cell and the core net is third interface, and the third interface includes that control plane third connects Mouth and user face third interface；

The protocol stack of the control plane third interface, based on agreement include the third interface application protocol and the flow control Transport protocol processed, for the signalling between the center cell and the core net；

The protocol stack of the user face third interface, based on agreement include the general packet wireless service tunnel protocol and institute User Datagram Protocol is stated, for the data transmission between the center cell and the core net.

8. the method according to the description of claim 7 is characterized in that the center cell includes control plane center cell and user Face center cell；

The control plane center cell is used to manage the control plane of the center cell, including the access polymer layer control plane with The radio access layer control plane for user；

User face center cell is used to manage the user face of the center cell, including the access polymerize layer user surface；

Wherein, the interface between the control plane center cell and user face center cell is the 4th interface；

The protocol stack of 4th interface, based on agreement include the general packet wireless service tunnel protocol and the user Datagram protocol, for the signalling between the control plane center cell and user face center cell.

9. a kind of method of communication, which is characterized in that the method is applied to communication system, and the communication system includes core Net, center cell, distribution unit and user equipment, comprising:

The center cell sends wireless link request to the distribution unit, and the wireless link request includes building The resource information of vertical Radio Link；

The center cell receives the wireless link response that the distribution unit is sent；

The center cell sends wireless link request to the distribution unit, comprising:

The center cell sends the request of signaling wireless link to the distribution unit；

The center cell receives the wireless link response that the distribution unit is sent, comprising:

The center cell receives the signaling wireless link response that the distribution unit is sent, and the signaling Radio Link is built Vertical response includes wireless spread-spectrum technology RLC information and media access control MAC information；

Alternatively,

The center cell sends the request of data wireless link to the distribution unit；

The center cell receives the data wireless link response that the distribution unit is sent, and the data Radio Link is built Vertical response includes the wireless spread-spectrum technology RLC information and the media access control MAC information.

10. according to the method described in claim 9, it is characterized in that, the method also includes:

The center cell controls RRC transparent transmission message by ascending wireless resource, receives the first mesh that the distribution unit is sent Mark information.

11. according to the method described in claim 9, it is characterized in that, the method also includes:

The center cell sends the second target information by downlink RRC transparent transmission message, Xiang Suoshu distribution unit.

12. according to the method described in claim 9, it is characterized in that,

The center cell receives the first object information that the distribution unit is sent by uplink RRC transparent transmission message, comprising:

The center cell receives the RRC connection request that the distribution unit is sent by the first uplink RRC transparent transmission message；

The center cell sends the second target information by downlink RRC transparent transmission message, Xiang Suoshu distribution unit, comprising:

For the center cell by the first downlink RRC transparent transmission message, Xiang Suoshu distribution unit sends RRC connection configuration；

The center cell is received the first object information that the distribution unit is sent, is also wrapped by uplink RRC transparent transmission message It includes:

The center cell receives the complete of the RRC connection configuration that the distribution unit is sent by the second uplink RRC transparent transmission message At information, the completion information of the RRC connection configuration includes attach request.

13. according to any method of claim 9-12, which is characterized in that the method also includes:

The center cell sends Release radio resource order to the distribution unit, and the Release radio resource order includes releasing Put reason；

The center cell receives the information that the Release radio resource that the distribution unit is sent is completed.

14. according to any method of claim 9-12, which is characterized in that the communication system further includes target's center's list Member and target distribution unit, the method also includes:

The center cell receives the measurement report that the distribution unit is sent by the 5th uplink RRC transparent transmission message.

15. according to the method for claim 14, which is characterized in that the method also includes:

The center cell sends switching demand to target's center's unit；

The center cell receives the switching requirement validation information that target's center's unit is sent, and switches requirement validation packet Include wireless resource configuration.

16. according to any method of claim 9-12, which is characterized in that the center cell is for managing multiple standards Website non real-time control section, the center cell includes access polymer layer control plane, access polymerization layer user surface and needle To the radio access layer control plane of user；

The radio access layer control plane for user, the management for the wireless connection for user；

The distribution unit is used to manage the real-time control part of the website of multiple standards, and the distribution unit includes being directed to cell Radio access layer control plane and wireless access layer user surface；

17. according to the method for claim 16, which is characterized in that the center cell includes control plane center cell and use Family face center cell；

18. a kind of method of communication, which is characterized in that the method is applied to communication system, and the communication system includes core Net, center cell, distribution unit and user equipment, comprising:

The distribution unit receives the radio bearer that the center cell is sent and establishes request, and the radio bearer establishes request packet Include the resource information for establishing radio bearer；

The distribution unit establishes radio bearer according to the resource information for establishing radio bearer；

The distribution unit sends radio bearer to the center cell and establishes response；

The resource information for establishing radio bearer includes the packet data polymerized agreement PDCP letter about Signaling Radio Bearer SRB Breath；

The distribution unit receives the radio bearer that the center cell is sent and establishes request, comprising:

The distribution unit receives the Signaling Radio Bearer that the center cell is sent and establishes request；

The distribution unit establishes radio bearer according to the resource information for establishing radio bearer, comprising:

The distribution unit is according to about the packet data polymerized agreement PDCP information of Signaling Radio Bearer SRB, described point The wireless spread-spectrum technology RLC information and media access control MAC information of cloth unit, establish Signaling Radio Bearer；

The distribution unit sends the radio bearer to the center cell and establishes response, comprising:

The distribution unit sends Signaling Radio Bearer to the center cell and establishes response, and the Signaling Radio Bearer, which is established, to be rung It should include security information；

Alternatively,

The resource information for establishing radio bearer includes the packet data polymerized agreement PDCP letter about Data Radio Bearer DRB Breath；

The distribution unit receives the Data Radio Bearer that the center cell is sent and establishes request；

The distribution unit is according to about the packet data polymerized agreement PDCP information of Data Radio Bearer DRB, described point The wireless spread-spectrum technology RLC information and media access control MAC information of cloth unit, establish Data Radio Bearer；

The distribution unit sends Data Radio Bearer to the center cell and establishes response, and the Data Radio Bearer, which is established, to be rung It should include the security information.

19. according to the method for claim 18, which is characterized in that the method also includes:

The distribution unit is sent to the center cell creates customer equipment context information, above and below the creation user equipment Literary information includes attach request.

20. according to the method for claim 18, which is characterized in that the method also includes:

The distribution unit sends Release radio resource request to the center cell, and the Release radio resource request includes releasing Put reason.

21. according to the method for claim 18, which is characterized in that the method also includes:

The distribution unit receives the radio resource control RRC release request that the center cell is sent；

The distribution unit sends RRC release response to the center cell, and the RRC release response is used for the center cell Complete resource release.

22. any method of 8-21 according to claim 1, which is characterized in that the communication system further includes target's center Unit and target distribution unit, the method also includes:

The distribution unit sends measurement report to the center cell, and the measurement report is the measurement report of the user equipment Accuse information.

23. according to the method for claim 22, which is characterized in that the method also includes:

The distribution unit receives the switching that the center cell is sent and shows information, and the switching display letter includes executing switching Information.

24. any method of 8-21 according to claim 1, which is characterized in that the center cell is for managing multiple systems The non real-time control section of formula, the center cell include access polymer layer control plane and access polymerization layer user surface；

The distribution unit is used to manage the real-time control part of each standard, and the distribution unit includes for the wireless of user Access layer control plane, radio access layer control plane and wireless access layer user surface for cell；

25. according to the method for claim 24, which is characterized in that the center cell includes control plane center cell and use Family face center cell；

The control plane center cell is used to manage the control plane of the center cell, including the access polymer layer control plane；

26. a kind of method of communication, which is characterized in that the method is applied to communication system, and the communication system includes core Net, center cell, distribution unit and user equipment, comprising:

The center cell sends radio bearer to the distribution unit and establishes request, and it includes building that the radio bearer, which establishes request, The resource information of vertical radio bearer；

The center cell receives the radio bearer that the distribution unit is sent and establishes response；

The center cell sends radio bearer to the distribution unit and establishes request, comprising:

The center cell sends Signaling Radio Bearer to the distribution unit and establishes request；

The center cell receives the radio bearer that the distribution unit is sent and establishes response, comprising:

The center cell receives the Signaling Radio Bearer that the distribution unit is sent and establishes response, and the Signaling Radio Bearer is built Vertical response includes security information；

Alternatively,

The center cell sends Data Radio Bearer to the distribution unit and establishes request；

The center cell receives the Data Radio Bearer that the distribution unit is sent and establishes response, and the Data Radio Bearer is built Vertical response includes the security information.

27. according to the method for claim 26, which is characterized in that the method also includes:

The center cell receives the creation customer equipment context information that the distribution unit is sent, the creation user equipment Contextual information includes attach request.

28. according to the method for claim 26, which is characterized in that the method also includes:

The center cell receives the Release radio resource request that the distribution unit is sent, the Release radio resource request packet Include release cause.

29. according to the method for claim 26, which is characterized in that the method also includes:

The center cell sends radio resource control RRC release request to the distribution unit；

The center cell receives the RRC release response that the distribution unit is sent, and the RRC release response is used for the center Unit completes resource release.

30. according to any method of claim 26-29, which is characterized in that the communication system further includes target's center Unit and target distribution unit, the method also includes:

The center cell receives the measurement report that the distribution unit is sent, and the measurement report is the survey of the user equipment Measure report information.

31. according to the method for claim 30, which is characterized in that the method also includes:

The center cell sends switching display information to the distribution unit, and the switching display letter includes executing switching letter Breath.

32. according to any method of claim 26-29, which is characterized in that the center cell is for managing multiple systems The non real-time control section of formula, the center cell include access polymer layer control plane and access polymerization layer user surface；

33. according to the method for claim 32, which is characterized in that the center cell includes control plane center cell and use Family face center cell；

34. a kind of distribution unit, which is characterized in that the distribution unit is applied to communication system, and the communication system includes core Heart net, center cell, distribution unit and user equipment, comprising:

Receiving module, the wireless link request sent for receiving the center cell, the wireless link request Resource information including establishing Radio Link；

Module is established, for establishing Radio Link according to the resource information for establishing Radio Link；

Sending module, for sending wireless link response to the center cell；

The receiving module is requested specifically for receiving the signaling wireless link that the center cell is sent；

It is described to establish module, specifically for being believed according to the packet data polymerized agreement PDCP about Signaling Radio Bearer SRB The wireless spread-spectrum technology RLC information and media access control MAC information of breath, the distribution unit, establish signaling Radio Link；

The sending module is specifically used for sending the response of signaling wireless link to the center cell, and the signaling is wireless Link establishment response includes the wireless spread-spectrum technology RLC information or the media access control MAC information；

Alternatively,

The receiving module is requested specifically for receiving the data wireless link that the center cell is sent；

It is described to establish module, specifically for being believed according to the packet data polymerized agreement PDCP about Data Radio Bearer DRB The wireless spread-spectrum technology RLC information and media access control MAC information of breath, the distribution unit, establish data Radio Link；

The sending module is specifically used for sending the response of data wireless link to the center cell, and the data are wireless Link establishment response includes the wireless spread-spectrum technology RLC information or the media access control MAC information.

35. distribution unit according to claim 34, which is characterized in that

The sending module is also used to control RRC transparent transmission message by ascending wireless resource, by first object information in described Heart unit is sent, and the first object information is that the user equipment is sent.

36. distribution unit according to claim 34, which is characterized in that

The receiving module is also used to receive the second target letter that the center cell is sent by downlink RRC transparent transmission message Breath.

37. distribution unit according to claim 34, which is characterized in that

The sending module is specifically also used to through the first uplink RRC transparent transmission message, and RRC connection request is single to the center Member is sent；

The receiving module is specifically also used to receive the RRC that the center cell is sent by the first downlink RRC transparent transmission message Connection configuration；

The sending module, is specifically also used to through the second uplink RRC transparent transmission message, by the completion information of RRC connection configuration to The center cell is sent, and the completion information of the RRC connection configuration includes attach request.

38. according to any distribution unit of claim 34-37, which is characterized in that

The receiving module, is specifically also used to the Release radio resource order that the center cell is sent, and the radio resource is released Putting order includes release cause.

39. according to any distribution unit of claim 34-37, which is characterized in that the communication system further includes target Center cell and target distribution unit,

The sending module is specifically also used to through the 5th uplink RRC transparent transmission message, and Xiang Suoshu center cell sends measurement report It accuses, the measurement report is the measurement report information of the user equipment.

40. according to any distribution unit of claim 34-37, which is characterized in that

The center cell is used to manage the non real-time control section of the website of multiple standards, and the center cell includes that access is poly- Close layer control plane, access polymerization layer user surface and the radio access layer control plane for user；

41. distribution unit according to claim 40, which is characterized in that the center cell includes control plane center cell With user face center cell；

42. a kind of center cell, which is characterized in that the center cell is applied to communication system, and the communication system includes core Heart net, center cell, distribution unit and user equipment, comprising:

Sending module, for sending wireless link request to the distribution unit, the wireless link request includes Establish the resource information of Radio Link；

Receiving module, the wireless link response sent for receiving the distribution unit；

The sending module is specifically used for sending the request of signaling wireless link to the distribution unit；

The receiving module responds, the signaling specifically for receiving the signaling wireless link that the distribution unit is sent Wireless link response includes wireless spread-spectrum technology RLC information and media access control MAC information；

Alternatively,

The sending module is specifically used for sending the request of data wireless link to the distribution unit；

The receiving module responds, the data specifically for receiving the data wireless link that the distribution unit is sent Wireless link response includes the wireless spread-spectrum technology RLC information and the media access control MAC information.

43. center cell according to claim 42, which is characterized in that

The receiving module is also used to control RRC transparent transmission message by ascending wireless resource, receives what the distribution unit was sent First object information.

44. center cell according to claim 42, which is characterized in that

The sending module is also used to through downlink RRC transparent transmission message, and Xiang Suoshu distribution unit sends the second target information.

45. center cell according to claim 42, which is characterized in that

The receiving module is specifically also used to receive the RRC that the distribution unit is sent by the first uplink RRC transparent transmission message Connection request；

The sending module is specifically also used to through the first downlink RRC transparent transmission message, and Xiang Suoshu distribution unit sends RRC connection Configuration；

The receiving module is specifically also used to receive the RRC that the distribution unit is sent by the second uplink RRC transparent transmission message The completion information of configuration is connected, the completion information of the RRC connection configuration includes attach request.

46. according to any center cell of claim 42-45, which is characterized in that

The sending module is also used to send Release radio resource order, the Release radio resource life to the distribution unit Enabling includes release cause；

The receiving module is also used to receive the information that the Release radio resource that the distribution unit is sent is completed.

47. according to any center cell of claim 42-45, which is characterized in that the communication system further includes target Center cell and target distribution unit,

The receiving module is specifically also used to receive the measurement that the distribution unit is sent by the 5th uplink RRC transparent transmission message Report.

48. center cell according to claim 47, which is characterized in that

The sending module is also used to send switching demand to target's center's unit；

The receiving module, is also used to receive the switching requirement validation information that target's center's unit is sent, and switching demand is true Recognizing information includes wireless resource configuration.

49. according to any center cell of claim 42-45, which is characterized in that the center cell is more for managing The non real-time control section of the website of a standard, the center cell include access polymer layer control plane, access polymer layer user Face and radio access layer control plane for user；

50. center cell according to claim 49, which is characterized in that the center cell includes control plane center cell With user face center cell；

51. a kind of distribution unit, which is characterized in that the distribution unit is applied to communication system, and the communication system includes core Heart net, center cell, distribution unit and user equipment, comprising:

Receiving module establishes request for receiving the radio bearer that the center cell is sent, and the radio bearer establishes request Resource information including establishing radio bearer；

Module is established, for establishing radio bearer according to the resource information for establishing radio bearer；

Sending module establishes response for sending radio bearer to the center cell；

The receiving module establishes request specifically for receiving the Signaling Radio Bearer that the center cell is sent；

It is described to establish module, specifically for being believed according to the packet data polymerized agreement PDCP about Signaling Radio Bearer SRB The wireless spread-spectrum technology RLC information and media access control MAC information of breath, the distribution unit, establish Signaling Radio Bearer；

The sending module is specifically used for sending Signaling Radio Bearer foundation response to the center cell, and the signaling is wireless It includes security information that response is established in carrying；

Alternatively,

The receiving module is specifically also used to receive the Data Radio Bearer that the center cell is sent and establishes request；

It is described to establish module, it is specifically also used to according to the packet data polymerized agreement PDCP about Data Radio Bearer DRB Information, the wireless spread-spectrum technology RLC information of the distribution unit and media access control MAC information, establish Data Radio Bearer；

The sending module, be specifically also used to the center cell send Data Radio Bearer establish response, the data without It includes the security information that response is established in line carrying.

52. distribution unit according to claim 51, which is characterized in that

The sending module is also used to send creation customer equipment context information, the creation user to the center cell Device context information includes attach request.

53. distribution unit according to claim 51, which is characterized in that

The sending module is also used to send Release radio resource request to the center cell, and the Release radio resource is asked It asks including release cause.

54. distribution unit according to claim 51, which is characterized in that

The receiving module is also used to receive the radio resource control RRC release request that the center cell is sent；

The sending module is also used to send RRC release response to the center cell, and the RRC release response is for described Center cell completes resource release.

55. according to any distribution unit of claim 51-54, which is characterized in that

The sending module, is also used to send measurement report to the center cell, and the measurement report is the user equipment Measurement report information.

56. distribution unit according to claim 55, which is characterized in that

The receiving module is also used to receive the switching that the center cell is sent and shows information, and the switching shows that letter includes Execute handover information.

57. according to any distribution unit of claim 51-54, which is characterized in that the center cell is more for managing The non real-time control section of a standard, the center cell include access polymer layer control plane and access polymerization layer user surface；

58. distribution unit according to claim 57, which is characterized in that the center cell includes control plane center cell With user face center cell；

59. a kind of center cell, which is characterized in that the center cell is applied to communication system, and the communication system includes core Heart net, center cell, distribution unit and user equipment, comprising:

Sending module establishes request for sending radio bearer to the distribution unit, and the radio bearer establishes request and includes Establish the resource information of radio bearer；

Receiving module establishes response for receiving the radio bearer that the distribution unit is sent；

The sending module is specifically used for sending Signaling Radio Bearer foundation request to the distribution unit；

The receiving module establishes response, the signaling specifically for receiving the Signaling Radio Bearer that the distribution unit is sent It includes security information that radio bearer, which establishes response,；

Alternatively,

The sending module is specifically used for sending Data Radio Bearer foundation request to the distribution unit；

The receiving module establishes response, the data specifically for receiving the Data Radio Bearer that the distribution unit is sent It includes the security information that radio bearer, which establishes response,.

60. center cell according to claim 59, which is characterized in that

The receiving module is also used to receive the creation customer equipment context information that the distribution unit is sent, the creation Customer equipment context information includes attach request.

61. center cell according to claim 59, which is characterized in that

The receiving module, is also used to receive the Release radio resource request that the distribution unit is sent, and the radio resource is released Putting request includes release cause.

62. center cell according to claim 59, which is characterized in that

The sending module is also used to send radio resource control RRC release request to the distribution unit；

The receiving module, is also used to receive the RRC release response that the distribution unit is sent, and the RRC release response is used for The center cell completes resource release.

63. according to any center cell of claim 59-62, which is characterized in that the communication system further includes target Center cell and target distribution unit,

The receiving module, is also used to receive the measurement report that the distribution unit is sent, and the measurement report is the user The measurement report information of equipment.

64. center cell according to claim 63, which is characterized in that

The sending module is also used to send switching display information to the distribution unit, and the switching display letter includes executing Handover information.

65. according to any center cell of claim 59-62, which is characterized in that the center cell is more for managing The non real-time control section of a standard, the center cell include access polymer layer control plane and access polymerization layer user surface；

66. center cell according to claim 65, which is characterized in that the center cell includes control plane center cell With user face center cell；