CN109246759A - It is a kind of to establish the method for dividing signaling bear and base station - Google Patents
It is a kind of to establish the method for dividing signaling bear and base station Download PDFInfo
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- CN109246759A CN109246759A CN201710458127.1A CN201710458127A CN109246759A CN 109246759 A CN109246759 A CN 109246759A CN 201710458127 A CN201710458127 A CN 201710458127A CN 109246759 A CN109246759 A CN 109246759A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/20—Interfaces between hierarchically similar devices between access points
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Abstract
本申请涉及一种建立分割信令承载的方法和基站。所述方法包括：将辅助基站增加请求消息向辅助基站发送，所述辅助基站增加请求消息携带分割信令的信息；从所述辅助基站接收辅助基站增加响应消息，所述辅助基站增加响应消息携带分割信令承载的配置信息；将RRC重配置请求向UE发送；从所述UE接收RRC重配置完成消息；以及将所述RRC重配置完成消息向所述辅助基站发送。
The present application relates to a method and base station for establishing a split signaling bearer. The method includes: sending an assisting base station adding request message to the assisting base station, the assisting base station adding request message carrying information of split signaling; receiving an assisting base station adding response message from the assisting base station, the assisting base station adding response message carrying splitting the configuration information carried by the signaling; sending an RRC reconfiguration request to the UE; receiving an RRC reconfiguration complete message from the UE; and sending the RRC reconfiguration complete message to the assisting base station.
Description
Priority claim
This application claims on May 5th, 2017 submits, application No. is the excellent of 201710313118.3 Chinese patent application
First weigh.All the contents of the application are incorporated herein by reference.
Technical field
The present invention relates to wireless communication technique, in particular to a kind of basis is separated in control unit CU/ distribution unit DU
In the case of, how to establish the method that signaling segmentation carries.
Background technique
5G refers to the 5th third-generation mobile communication technology.Different from preceding four generation, 5G is not a single wireless technology, and
It is a fusion of existing wireless communication technique.Currently, LTE peak rate can achieve 100Mbps, the peak rate of 5G will
Reach 10Gbps, improves 100 times than 4G.Existing 4G network processes locomotor is limited, can not support section HD video,
The business such as high-quality speech, augmented reality, virtual reality.5G will introduce more advanced technology, be imitated by the frequency spectrum more increased
Rate, cell of more frequency spectrum resources and more crypto set etc. meet the needs of mobile service flow growth jointly, to solve
The problem of 4G network faces, and construct transmission rate, high capacity, low time delay, high reliability, the outstanding user's body of a high speed
The network tested.As shown in Figure 1, containing the core net of the access net and 5G of 5G in 5G framework, UE passes through access net and core net
It is communicated with data network.
Fig. 1 is the configuration diagram of 5G.Wherein, core net includes control plane node and user plane node, they can
To be different entity.It is NG interface between 5G core net and the base station 5G, NG interface includes control plane and user plane.Control
Plane is the interface between core network control node and base station, and user plane interface is between core network user node and base station
Interface.The base station connecting with 5G core net can be the base station 5G gNB, and the interface between gNB and gNB is Xn interface, Xn interface
Include user plane interface and control plane interface.
UE can be simultaneously with two base station transceiver data, this is referred to as dual link (dual-connectivity).Wherein one
Radio resource control RRC message is responsible for sending to UE in a base station, and is responsible for and core net control Plane Entity interaction, the base station quilt
Referred to as master base station MeNB, another base station are referred to as assistant base station SeNB.It is the main plot Pcell of UE that master base station, which has a cell,
Master base station sends RRC information to UE by the main plot, other cells are secondary cell Scell.Have in the Scell of assistant base station
One cell is assistant base station main plot pScell (function of pScell).There is upstream physical layer control channel at pScell,
Do not have at other Scell.The cell group of master base station is MCG, and the cell group of assistant base station is SCG.In dual link, data are held
Three types are loaded with, one kind being named segmentation carrying (split carrying), and one kind makes SCG carry, and one kind being named SCG segmentation carrying.split
The convergence protocol PDCP protocol stack of carrying is on master base station, other user plane protocol layers (such as wireless spread-spectrum technology RLC/ matchmaker
Body access control MAC/physical layer) all on assistant base station.In SCG carrying, all user-plane protocol stacks are all being assisted
On base station, and including PDCP/RLC/MAC/ physical layer, wherein assistant base station receives data from core net, by user plane
Processing, is sent to UE by eating dishes without rice or wine.SCG segmentation carrying is to establish all in assistant base station, and assistant base station can divide a part of data
To master base station.
In 5G technology, using some technologies different with 4G technology, for example, on service quality (QoS) framework, 5G
Define new mode.When data connection (PDU Session) is established, core net default qos policy or
The qos policy authenticated issues wireless access network RAN and user equipment (UE).Data connection is UE to the transmission road between core net
Diameter, it includes the transmission path between core net and base station and the radio bearer between base station and UE.PDU Session is UE
Connection between packet data network, this connection are used to transmission data units, generally establish a PDU to a business
Session.Data unit type includes IP data, Ethernet data and non-IP data.When establishing PDU Session,
Qos policy is sent to RAN by NG interface by core net, and qos policy is sent to UE by NAS interface.In qos policy,
Other than the instruction of QoS Flow information/description information, further comprise specific QoS information, specific QoS information include with
At least one lower: A data postpone target, B data error rate, the priority of C data, D and guarantee data rate, E maximum data speed
Rate can also include other information, such as the information of application layer.RAN establishes default DRB according to the requirement of QoS, in addition,
RAN can also establish other DRB simultaneously.In user plane, core net data packet group at QoS Flow, and in QoS Flow
Data head plus QoS indicate information.Information is indicated according to the QoS, and RAN can find corresponding according to the Qos strategy received
Design parameter is performed corresponding processing according to the parameter inside qos policy using the data of user plane, is wanted with meeting quality
It asks.Data packet comprising QoS instruction information is sent to RAN by core net, and RAN utilizes QoS information therein, QoS Flow is reflected
The resource and radio bearer of access net are penetrated into, for example, the QoS Flow is mapped on some Deta bearer DRB by RAN decision,
Or new Deta bearer DRB is established for the QoS Flow.When establish new DRB to be determined by RAN, for example, can receive
It is established after the signaling of core net, or after the data for receiving the QoS Flow user, the packet header for extracting QoS Flow is wrapped
The QoS instruction information contained, indicates information by QoS, in conjunction with the QoS plan of the RAN default qos policy and/or pre-authentication saved
Slightly, RAN can learn specific qos requirement corresponding to the QoS Flow.According to the specific qos requirement, if current
The DRB having built up is suitble to carry the data of the qos requirement, then transmits the QoS Flow by this DRB；Otherwise, RAN can be with
New DRB is established in decision, and the QoS Flow is carried with new DRB.
In 5G framework, with the growth requirement of wireless technology, the functional module on the same base station is divided originally
User is increasingly closer to from, some of functional modules, and other modules are then by Chi Zuhua, virtualization, and are disposed by concentrating.
That is, base station is possible to be divided into two parts, a part is central control unit (abbreviation CU), and a part is distribution unit
(abbreviation DU).For DU closer to user, CU can support multiple antennas to connect far from antenna, so as to improve network performance, one
CU can connect multiple DU, and the function on CU can virtualize.Pass through fronthaul connection communication between CU and DU.
Fronthaul connection is (preceding to return back) mainly from DU (distribute Unit) to base station central control unit (Central
Unit the connection between).
As shown in Fig. 2, function division between CU and DU can there are many, such as CU has the function of RRC and user plane
The function of PDCP, and DU has RLC/MAC and physical layer.Under framework as CU, DU, how dual link is supported, with current
LTE under dual link process it is different,
The present invention has studied under new new technology, how for UE to establish dual link.In this application, it solves following
At least one problem:
1) signaling segmentation carrying how is established；
2) in the case where CU/DU is separated, signaling segmentation carrying how is established.
Summary of the invention
The present invention provides one kind in dual link, how to establish signaling segmentation for UE and carries, and at CU/DU points
From in the case where, signaling segmentation bearing method how is established.By means of the invention it is also possible to establish segmentation signaling bear, mention
The reliability of high signalling reduces the time delay of signalling, reduces the probability of UE Radio Link Failure.
Some example embodiments are related to a kind of method for establishing signaling segmentation carrying.The method may include: it will assist
Base station increases request message and sends to assistant base station, and the assistant base station increases the information that request message carries segmentation signaling；From
The assistant base station receives assistant base station and increases response message, and the assistant base station increases response message and carries segmentation signaling bear
It is successfully established and/or failure information；RRC reconfiguration request is sent to UE；Completion is reconfigured from UE reception RRC to disappear
Breath；And the RRC information for reconfiguring completion is sent to the assistant base station.
In some optional example embodiments, the assistant base station increases the information for the segmentation signaling that request message carries
Including dividing one or more of the mark of signaling, the configuration information for dividing signaling.
In some optional example embodiments, if what is established on the assistant base station is segmentation carrying, needle
To some Deta bearer DRB, determine quality requirement corresponding to its DRB or the master base station by service quality as master base station
The information of QoS Flow and the map information of QoS Flow to DRB are sent to the assistant base station, so as to by the assistant base station
Determine the quality requirement of DRB.
In some optional example embodiments, if what is established on the assistant base station is the cell group of assistant base station
SCG carrying or SCG segmentation carrying, then:
Master base station is by the mapping comprising service quality QoS Flow information and/or QoS Flow to Data Radio Bearer DRB
The message that the assistant base station of message increases request is sent to the assistant base station, to determine QoS Flow by the assistant base station
To the mapping of DRB and/or the quality requirement of DRB；Or
The master base station determines quality requirement corresponding to its DRB, and will include QoS Flow information and/or QoS Flow
To the mapping message of DRB, the message that the assistant base station of quality requirement corresponding to DRB increases request is sent to the auxiliary base
It stands.
In some optional example embodiments, master base station or assistant base station are wanted according to the corresponding quality of QoS Flow
It asks, determines quality requirement corresponding to DRB that QoS Flow is mapped to.
In some optional example embodiments, if what is established on the assistant base station is segmentation signaling bear, institute
Master base station is stated to send out the message that the assistant base station of the mark for containing segmentation signaling bear and corresponding quality requirement increases request
It send to the assistant base station.
In some optional example embodiments, if what is established on the assistant base station is segmentation signaling bear, institute
Master base station is stated to send out the message that the assistant base station of the mark and corresponding concrete configuration that contain segmentation signaling bear increases request
It send to the assistant base station.
In some optional example embodiments, master base station determines its corresponding matter according to the type of segmentation signaling bear
Amount requires or specific configuration information.
In some optional example embodiments, if what is established on the assistant base station is segmentation signaling bear, institute
It states master base station and the message that the mark for containing segmentation signaling bear and the assistant base station for indicating information increase request is sent to institute
State assistant base station.The instruction information indicates whether segmentation signaling bear uses default configuration.
In some optional example embodiments, if what is established on the assistant base station is segmentation signaling bear, institute
Assistant base station is stated using default configuration to configure user plane.
In some optional example embodiments, the assistant base station includes central control unit (CU) and distribution unit
(DU)；And during establishing signaling segmentation carrying, carrying is established request message and sent to DU by CU；The DU will be carried
Response message is established to send to the CU.
Some example embodiments are related to a kind of for establishing the master base station of signaling segmentation carrying.The master base station includes: place
Manage device；And memory, wherein the instruction that storage can be executed by the processor, and when described instruction is held by the processor
When row, the processor is made to execute following methods step: assistant base station being increased into request and is sent to assistant base station；From the auxiliary
Base station receives assistant base station and increases response message；RRC reconfiguration request is sent to UE；RRC is received from the UE to have reconfigured
At message；And the RRC is reconfigured into completion message and is sent to the assistant base station.
Some example embodiments are related to a kind of for establishing the assistant base station of signaling segmentation carrying.The assistant base station packet
It includes: processor；And memory, wherein the instruction that storage can be executed by the processor, and when described instruction is by described
When managing device execution, the processor is made to execute following methods step: receiving assistant base station from master base station and increase request；To master base station
It sends assistant base station and increases response message；And it is reconfigured from RRC of the master base station reception from UE and completes message.
In some optional example embodiments, the assistant base station includes central control unit CU and distribution unit DU；
And when the assistant base station, which receives the assistant base station, increases request message:
Carrying is established request message and sent to DU by CU；The mark that request message includes cell, carrying are established in the carrying
Mark, carrying configuration information and carrying whether need one or more of instruction information of flow control.
In some optional example embodiments, carrying is established response message and sent to the CU by the DU.It is described to hold
It carries and establishes the mark that response message includes the carrying being successfully established and/or the GTP tunnel number that DU is user plane distribution.
In some optional example embodiments, when sending data in the carrying, the CU is used to indicate described
Whether DU needs to be implemented flow control, and the instruction is sent by user plane or control plane.
In some optional example embodiments, if what is established on the assistant base station is SCG carrying or SCG segmentation
Carrying disappears then after the RRC to be reconfigured to completion message and is sent to the assistant base station to the switching of core net transmitting path
Breath.
A kind of master base station carried for establishing signaling segmentation, comprising:
Processor；And
Memory, wherein the instruction that storage can be executed by the processor, and when described instruction is held by the processor
When row, the processor is made to execute following methods step:
Assistant base station is increased request to send to assistant base station, the assistant base station increases request message and carries segmentation signaling
Information；
Assistant base station is received from the assistant base station and increases response message, and the assistant base station increases response message carrying point
Cut the configuration information of signaling bear；
RRC reconfiguration request is sent to UE；
It is reconfigured from UE reception RRC and completes message；And
The RRC is reconfigured completion message to send to the assistant base station.
In some optional example embodiments, wherein the master base station is LTE base station or the new access technology of 5G (NR) base
It stands.
A kind of assistant base station carried for establishing signaling segmentation, comprising:
Processor；And
Memory, wherein the instruction that storage can be executed by the processor, and when described instruction is held by the processor
When row, the processor is made to execute following methods step:
Assistant base station is received from master base station and increases request, and the assistant base station increases the letter that request message carries segmentation signaling
Breath；
Assistant base station is sent to master base station and increases response message, and the assistant base station increases response message and carries segmentation signaling
The configuration information of carrying；And
It is reconfigured from RRC of the master base station reception from UE and completes message.
In some optional example embodiments, the assistant base station is the base station the new access technology of 5G (NR).
In some optional example embodiments, the assistant base station includes central control unit (CU) and distribution unit
(DU)；And after receiving the assistant base station increase request from the master base station:
Carrying is established request message and sent to DU by CU；And
Carrying is established response message and sent to the CU by the DU.
Detailed description of the invention
Fig. 1 is the architecture diagram of 5G system according to the embodiment；
Fig. 2 is the schematic diagram for showing the separation architecture of CU/DU of embodiment according to the present invention；
Fig. 3 shows the flow chart of first embodiment according to the present invention；
Fig. 4 shows the flow chart of second embodiment according to the present invention；
Fig. 5 shows the flow chart of third embodiment according to the present invention.
Specific embodiment
In order to which the purpose, technological means and advantage of the application is more clearly understood, below in conjunction with attached drawing to the application into
Row is further described.
Fig. 2 is the architecture diagram of system of the invention.The figure is merely illustrative, it is not intended to which the limitation present invention is claimed
Range.
As shown in Fig. 2, base station is divided into CU and DU.Wherein, RRC, RLC, MAC function are realized on the CU.CU and
Can be by interface between DU, which is referred to as F1 interface in the present invention, and DU does not have interface each other.
Fig. 3 shows the flow chart of first embodiment according to the present invention.
Under the embodiment, master base station is LTE base station, and assistant base station is the base station the new access technology of 5G (NR).LTE base station and
It is connected between the base station NR by X2 interface, LTE base station is connected to the core net of LTE, wherein control plane is connected to MME, user
Plane is connected to SGW.The base station NR is connected to core network user plane SGW.
In step 301, assistant base station is increased request message and sent to purpose assistant base station by master base station.
The main plot of UE on base station receives the measurement report of user, if on neighbouring assistant base station some cell letter
Number quality is met the requirements, then the main plot on master base station determines to establish supplementary cell on the assistant base station, and passes through doubly-linked
Fetch sharing data transmission.For example, base station is determined some or certain several DRB originally on MeNB also by auxiliary base
It stands to send data, that is, establishes Split carrying.When the base station where PCell determines to increase a cell as SCell,
Base station where base station to the SCell where PCell sends assistant base station and increases request message.
Master base station can also determine to send control signaling also by assistant base station and (to be sent to the RRC information of UE).
Master base station replicates control signaling, and a duplicate is sent to UE by master base station, another duplicate is sent to UE by assistant base station.
The reliability of transmission can be improved in this way.
Master base station sends the message that assistant base station increases request to assistant base station, the message carry following one or
Multiple information:
(1) ability of UE, including wireless access capability, cryptographic capabilities；
(2) information for the Deta bearer established on assistant base station, the type comprising Deta bearer (e.g. hold by segmentation
Carry or SCG carrying or SCG segmentation carrying), the E-RAB of Deta bearer mark and the corresponding quality requirement of E-RAB.Such as
The type of fruit Deta bearer be segmentation carrying, then the information of the Deta bearer also include master base station distribution be used to receive uplink
The GTP tunnel number of data.If the type of Deta bearer is SCG carrying or SCG segmentation carrying, the letter of the Deta bearer
The GTP tunnel number that is used to receive upstream data of the breath also comprising core net SGW distribution；
(3) information for dividing signaling, the information for dividing signaling includes the mark of segmentation signaling.Segmentation signaling can be made
It is that a kind of new bearing mode configures on assistant base station, divides the type for the segmentation signaling that the mark of signaling shows, such as marks
Knowing segmentation signaling out as SRB1 or SRB2.By segmentation signaling mark, its corresponding user plane can be established in X2 interface
Or control plane.Or segmentation signaling is configured on assistant base station in the way of dividing Deta bearer, assistant base station handle
Divide signaling as a kind of segmentation Deta bearer, assistant base station be not aware that transmitted on the tunnel X2 be segmentation signaling, still
Deta bearer.Here, the mark for dividing signaling refers to be identified using the E-RAB of Deta bearer, and master base station generates the mark, and
Save the corresponding relationship of the E-RAB and signaling；
(4) the corresponding qos requirement of segmentation signaling.For the data that core net is sent, the quality requirement (QoS) of data is core
The authentication policy server configuration of heart net, master base station is sent to by core net, then master base station is sent to assistant base station.It is right
In RRC signaling, without corresponding qos requirement.Master base station needs to be generated qos requirement corresponding to RRC signaling as its own, such as
It determines that its corresponding quality (QoS) requires according to the type (i.e. SRB1 or SRB2) of segmentation signaling, allows assistant base station according to this
Qos requirement establishes corresponding user plane, such as establishes RLC/MAC protocol layer.Assistant base station will also distribute user on X2 interface
The transport layer information of plane carries for example, dividing to each signaling, and assistant base station distributes a GTP tunnel number；
(5) divide the configuration information of signaling.For the data that core net is sent, the quality requirement (QoS) of data is core
The authentication policy server configuration of net, QoS is sent to by master base station by core net, then master base station is sent to auxiliary base
It stands.For RRC signaling, core net does not configure corresponding qos requirement.(i.e. SRB1 is also according to the type of segmentation signaling for master base station
It is SRB2) determine its corresponding specific configuration information, master base station can be the configuration information of segmentation signaling, for example including uplink
RLC configuration, downlink RLC configuration, priority, logic channel configuration etc. RLC configuration information, sent to assistant base station, it is auxiliary
It helps base station and configures corresponding user plane according to the configuration information, such as establish RLC/MAC protocol layer.(6) it indicates information, refers to
Show assistant base station, segmentation signaling bear using it is no be default configuration (default configuration), or instruction is auxiliary
Base station is helped, segmentation signaling bear is using default configuration information or explicit configuration.When UE access master base station, main base
It stands and is carried for UE configuration signal, specifically, SRB1 and SRB2 can be lacked using default configuration or using explicit configuration
The configuration information of province has preparatory definition in LTE specification, if using default configuration information, specific parameter, such as RLC
Configuration information, no need to send give UE, UE that value predetermined is also used in LTE radio interface specification to put down to configure user
Face.If using explicit configuration, master base station needs to configure specific parameter, such as the configuration information of RLC.When on assistant base station
When configuration segmentation signaling bear, master base station needs that assistant base station, segmentation signaling bear is told to configure using which kind of mode.Refer to
Show that information can be set into using default configuration, or is arranged to explicitly configure.When being arranged to default configuration, base is assisted
It stands using value predetermined in LTE specification and configures the protocol layers such as RLC, MAC.If being arranged to explicitly configure, master base station is wanted
The configuration information of specific user plane, such as configuration information shown in (5), it is sent to assistant base station.(5) it is configured shown in
Information may be embodied in RRC receptacle, and RRC container is one that RRC relevant information is sent between master base station and assistant base station
Container, the inside contain the configuration information of the RRC of master base station configuration.Assistant base station can parse the RRC that receptacle includes and match
Confidence breath, obtains the configuration information of SRB1 and/or SRB2.Or configuration information shown in (5) is included in RRC container exterior, leads to
Information element configuration information shown in carrying (5) inside the message for increasing request is crossed, such assistant base station does not need to parse
The RRC configuration information that receptacle includes.
Or regulation assistant base station knows to establish and disappear when dividing signaling bear to get to assistant base station foundation request
The mark of the segmentation signaling bear carried in breath, such as SRB1 or SRB2, assistant base station default is using defined in LTE specification
Default configuration information configures user plane, comes for example, by using default RLC configuration parameter defined in LTE radio interface specification
Configure rlc protocol layer.In this way, to segmentation signaling bear on assistant base station, such as SRB1, user plane configuration may be with master base stations
The configuration information of the upper carrying is different, and the configuration of user plane is not optimal, and advantage is the reduction of master base station and auxiliary
Signalling between base station.
In step 302, assistant base station is increased response message and sent to master base station by assistant base station.
Assistant base station determines the configuration information carried on UE, purpose base station is on UE according to QoS the and UE ability of DRB
The configuration information of auxiliary carrying or secondary cell is included in RRC container, and the container is transmitted to UE by master base station.UE according to
The configuration is arranged each layer protocol in the end UE, such as the agreement of RLC, MAC layer.Message also carries DRB mark or X2 user plane
Mark and the corresponding transport layer information of the user plane (for example, Tunnel Identifier).Assistant base station increases response message and carries
One or more following information:
(1) RRC container, wherein containing assistant base station to the configuration information of UE.RRC agreement on assistant base station determines
The configuration information of UE is included in RRC container, and is sent to UE by master base station by configuration information of the Deta bearer on UE.
Can also be comprising the configuration information of segmentation signaling bear in RRC container, such as the mark comprising dividing signaling and its is corresponding
The configuration information of RLC/MAC；The configuration information of corresponding RLC/MAC can be configured using default configuration or using explicit,
Default configuration or explicit configuration are described in above step, are omitted herein.
(2) information of the received Deta bearer of assistant base station, wherein comprising Deta bearer mark (E-RAB ID) and
The GTP tunnel number for being used to receive downlink data that assistant base station is distributed by Deta bearer；
(3) information of the received segmentation signaling bear of assistant base station, mark and assistant base station comprising signaling bear are
The GTP tunnel number for being used to receive downlink signaling data that signaling bear is distributed.Message carries the segmentation signaling being successfully established and holds
The mark of load, and/or the mark of the signaling bear comprising establishing failure.
In step 303, master base station sends RRC reconfiguration request to UE.
Master base station does not parse RRC container, and RRC container is transmitted to UE.Master base station can match UE plus its own
Confidence breath, and the configuration information of itself and assistant base station is sent jointly into UE.
In step 304, UE, which reconfigures RRC, completes message to master base station transmission.
After UE configuration successful, response message is sent to master base station.The response message may be embodied in sent in 302 steps
Configuration information response, that is, contain the response to master base station configuration information, also contain to assistant base station configuration information
Response.If necessary, UE also needs to carry out random access procedure with new assistant base station, and carries out together with new assistant base station
Step.After synchronization, assistant base station can start to send data to UE.
In step 305, master base station, which reconfigures RRC, completes message to assistant base station transmission.
By the configuration at the end UE, successful information notifies assistant base station to master base station.Because UE is confirmation message to master base station
It sends, so master base station needs confirmation message to be transmitted to assistant base station.If master base station cannot parse UE to assistant base station
The response of configuration information, master base station can also turn UE to the response of the configuration information of assistant base station by way of RRC container
Issue assistant base station.
Within step 306, master base station is to core net transmitting path handover request.The path switching message is for certain carryings
Type is unwanted, such as establishes the segmentation carrying on master base station, is that no need to send the message.For establishing auxiliary
The SCG carrying or SCG segmentation carrying helped on base station is needed.Message carries the GTP tunnel number of assistant base station distribution, uses
To receive the downlink data of core net transmission.
So far, divide signaling bear and assistant base station loading establishing process is completed.
Fig. 4 shows the flow chart of second embodiment according to the present invention.
Under the embodiment, master base station is LTE base station, and assistant base station is all the base station the new access technology of 5G (NR), Huo Zhezhu
Base station and assistant base station are all the base stations the new access technology of 5G (NR).Interface between base station is Xn interface, and each base station connects
To the core net of 5G, wherein the control plane of base station is connected to authentication locomotive function entity (abbreviation AMF), and the user of base station
Plane is connected to user-plane function (abbreviation UPF).
In step 401, assistant base station is increased request and sent to purpose assistant base station by master base station.
The main plot of UE on base station receives the measurement report of user, if on neighbouring assistant base station some cell letter
Number quality is met the requirements, then the main plot on master base station determines to establish supplementary cell on the assistant base station, and passes through doubly-linked
Fetch sharing data transmission.For example, base station is determined some or a few a Deta bearers originally on master base station MgNB
Data are sent also by assistant base station, that is, establish Split carrying.When the base station where PCell determines that increasing a cell makees
When for SCell, the base station where the base station to the SCell where PCell sends assistant base station and increases request message.
Master base station can also determine to send control signaling also by assistant base station and (to be sent to the RRC information of UE).
Master base station replicates control signaling, and a duplicate is sent to UE by master base station, another duplicate is sent to UE by assistant base station.
The reliability of transmission can be improved in this way.
Master base station sends the message that assistant base station increases request to assistant base station, the message carry following one or
Multiple information:
(1) ability of UE, including wireless access capability, cryptographic capabilities；
(2) information for the Deta bearer established on assistant base station, the type comprising Deta bearer (e.g. hold by segmentation
Carry or SCG carrying or SCG segmentation carrying), the mark of the upper Deta bearer of Xn and the corresponding quality requirement of Deta bearer
QoS.The mark of the Deta bearer can be the DRB mark of master base station distribution.
It is carried if it is segmentation, core net sends the quality requirement of quality stream (QoS Flow) to master base station, QoS
The quality requirement of Flow is different from each other, and the close QoS Flow of quality requirement is mapped to wireless data carrying DRB by master base station, more
The QoS Flow that a different quality requires may map on the same DRB.Master base station is corresponding according to different QoS flow
Quality requirement determines qos requirement corresponding to some DRB of QoS Flow mapping, for example, for rate guarantee (abbreviation GRB)
Business selects highest quality requirement as the corresponding qos requirement of DRB；Do not guarantee (abbreviation non-GRB) business for rate,
Minimum quality requirement is selected, as the corresponding qos requirement of DRB.Alternatively, by the information of QoS flow, (including QoS flow is marked
Know and corresponding quality requirement) and the map information of QoS flow to DRB be sent to assistant base station, determined by assistant base station
The quality requirement of DRB.
If it is SCG carrying or SCG segmentation carrying, core net is by the quality requirement of quality stream (QoS Flow) to main base
It stands transmission, wherein the quality requirement of QoS Flow is different from each other, and the close QoS Flow of quality requirement is mapped to nothing by master base station
The QoS Flow of line Deta bearer DRB, multiple and different quality requirements may map on the same DRB.When master base station will be established
When SCG carrying or SCG segmentation carry, by the information for carrying QoS flow, (information of QoS flow includes that QoS flow is marked
Know and corresponding quality requirement) assistant base station increase the message of request and sent to assistant base station, and QoS is determined by assistant base station
The mapping of flow to DRB determines the quality requirement of DRB, and configures user plane protocol layer according to the quality requirement of DRB,
User plane including the user plane and the end UE established on assistant base station, such as PDCP/RLC/MAC.Alternatively, will carry
The message that the assistant base station of the map information of the information and QoS flow to DRB of QoS flow increases request is sent out to assistant base station
It send, and determines the quality requirement of DRB by assistant base station.Alternatively, master base station is wanted according to the different corresponding quality of QoS flow
It asks, determines qos requirement corresponding to the DRB of QoS Flow mapping, specific method will be as described above, master base station will carry QoS
The assistant base station of the information of flow, the map information of QoS flow to DRB and the corresponding quality requirement of DRB increases request
Message is sent to assistant base station, and configures user plane protocol layer according to the quality of DRB by assistant base station, is included in auxiliary base
The user plane of the user plane and the end UE established on standing.
The message of Deta bearer also includes the GTP tunnel number for being used to receive upstream data of master base station distribution.If data
The type of carrying is SCG carrying or SCG segmentation carrying, then the information of the Deta bearer also includes what core net SGW was distributed
GTP tunnel number, for receiving upstream data；
(3) information for dividing signaling, the information for dividing signaling includes the mark of segmentation signaling.Segmentation signaling can be made
It is configured on assistant base station for a kind of new bearing mode, such as identifying segmentation signaling is SRB1 or SRB2.Pass through segmentation
Signaling mark, can establish its corresponding user plane in X2 interface.Or segmentation signaling according to the side of segmentation Deta bearer
Formula is configured on assistant base station, and using segmentation signaling as a kind of segmentation Deta bearer, assistant base station is not aware that assistant base station
What is transmitted on the tunnel Xn is segmentation signaling or Deta bearer.Here, the mark for dividing signaling refers to using Deta bearer
Mark (such as DRB mark), master base station generates the mark, and saves the corresponding relationship of DRB mark and signaling；
(4) the corresponding Qos requirement of segmentation signaling.For the data that core net is sent, the quality requirement (QoS) of data is core
The authentication policy server configuration of heart net, it is sent to by core net to master base station, then master base station is sent to assistant base station.
For RRC signaling, without corresponding qos requirement.Master base station needs to generate qos requirement corresponding to RRC signaling, example as its own
Such as determine that its corresponding quality (QoS) requires according to the type (i.e. SRB1 or SRB2) of segmentation signaling, allow assistant base station according to
The qos requirement establishes corresponding user plane, such as establishes RLC/MAC protocol layer.Assistant base station will also be distributed on Xn interface and be used
The transport layer information of family plane, such as.Each signaling is divided and is carried, assistant base station distributes a GTP tunnel number；
(5) divide the configuration information of signaling.For the data that core net is sent, the quality requirement (QoS) of data is core
The authentication policy server configuration of net, QoS is sent to by master base station by core net, then master base station is sent to auxiliary base
It stands.For RRC signaling, core net does not configure corresponding qos requirement.(i.e. SRB1 is also according to the type of segmentation signaling for master base station
It is SRB2) determine that its corresponding specific configuration information, master base station can be the configuration informations of segmentation signaling, for example including uplink
RLC, downlink RLC, priority, logic channel configuration etc. RLC configuration information, sent to assistant base station, assistant base station root
Corresponding user plane is configured according to the configuration information, such as establishes RLC/MAC protocol layer.
(6) indicate information, indicate assistant base station, segmentation signaling bear using it is no be default configuration, or instruction it is auxiliary
Base station is helped, segmentation signaling bear is using default configuration information or explicit configuration.When UE access master base station, main base
It stands and is carried for UE configuration signal, specifically, SRB1 and SRB2 can be lacked using default configuration or using explicit configuration
The configuration information of province has preparatory definition in LTE specification, if using default configuration information, specific parameter, such as RLC
Configuration information, no need to send give UE, UE also to use in LTE specification value predetermined to configure user plane.If adopted
With explicit configuration, master base station needs to configure specific parameter, such as the configuration information of RLC.Divide when being configured on assistant base station
When signaling bear, master base station needs that assistant base station, segmentation signaling bear is told to configure using which kind of mode.Indicate that information can
To be arranged to using default configuration, or it is arranged to explicitly configure.When being arranged to default configuration, assistant base station is used
Value predetermined configures the protocol layers such as RLC, MAC in LTE radio interface specification.If being arranged to explicitly configure, master base station
The configuration information of specific user plane, such as configuration information shown in (5), it is sent to assistant base station.(5) match shown in
Confidence breath may be embodied in RRC receptacle, and RRC container is that the one of RRC relevant information is sent between master base station and assistant base station
A container, the inside contain the configuration information of the RRC of master base station configuration.Assistant base station can parse the RRC that receptacle includes
Configuration information obtains the configuration information of SRB1 and/or SRB2.Or configuration information shown in (5) is included in RRC container exterior,
Information element configuration information shown in carrying (5) inside message by increasing request, such assistant base station do not need to solve
The RRC configuration information that analysis receptacle includes.Or regulation assistant base station know to establish segmentation signaling bear when to get
The mark of the segmentation signaling bear carried in request message is established to assistant base station, such as SRB1 or SRB2, assistant base station are write from memory
Recognize using configuration information default defined in LTE specification and configure user plane, for example, by using fixed in LTE radio interface specification
The default RLC configuration parameter of justice configures rlc protocol layer.In this way, using on assistant base station segmentation signaling bear, such as SRB1
Family planar configuration may with the carrying on master base station configuration information it is different, the configuration of user plane is not optimal, excellent
Point is the reduction of the signalling between master base station and assistant base station.
Step 402, assistant base station is increased response message and sent to master base station by assistant base station.
Assistant base station determines the configuration information carried on UE, purpose base station is on UE according to QoS the and UE ability of DRB
The configuration information of auxiliary carrying or secondary cell is included in RRC container, and the container is transmitted to UE by master base station.UE according to
The configuration is arranged each layer protocol in the end UE, such as RLC, MAC layer.Message also carry DRB mark or X2 user plane mark,
And the corresponding transport layer information of the user plane (for example, Tunnel Identifier).Assistant base station increase response message carries following
One or more information:
(1) RRC container, wherein containing assistant base station to the configuration information of UE.RRC agreement on assistant base station determines
The configuration information of UE is included in RRC container, and is sent to UE by master base station by configuration information of the Deta bearer on UE.
Can also be comprising the configuration information of segmentation signaling bear in RRC container, such as the mark comprising dividing signaling and its is corresponding
The configuration information of RLC/MAC.The configuration information of corresponding RLC/MAC can be configured using default configuration or using explicit,
Default configuration or explicit configuration are described in above step, are omitted herein.
(2) information of the received Deta bearer of assistant base station, the mark (E-RABID) comprising Deta bearer and auxiliary
Base station is the GTP tunnel number for being used to receive downlink data of carrying distribution.(3) letter of the received segmentation signaling bear of assistant base station
Breath, mark and assistant base station comprising signaling bear are the GTP tunnel for being used to receive downlink signaling data of signaling bear distribution
Taoist monastic name.Message carries the mark for the segmentation signaling bear being successfully established, and/or the mark of the signaling bear comprising establishing failure.
Step 403, master base station sends RRC reconfiguration request to UE.
Master base station does not parse RRC container, and RRC container is transmitted to UE.Master base station can match UE plus its own
Confidence breath, and the information of itself and assistant base station configuration is sent jointly into UE.
Step 404:UE, which reconfigures RRC, completes message to master base station transmission.
After UE configuration successful, response message is sent to master base station.The response message may be embodied in sent in 302 steps
Configuration information response, that is, contain the response to master base station configuration information, also contain to assistant base station configuration information
Response.If desired, UE also needs to carry out random access procedure with new assistant base station, and carried out together with new assistant base station
Step.After synchronization, assistant base station can start to send data to UE.
Step 405: master base station, which reconfigures RRC, completes message to assistant base station transmission.
By the configuration at the end UE, successful information notifies assistant base station to master base station.Because UE is confirmation message to master base station
It sends, so master base station needs confirmation message to be transmitted to assistant base station.If master base station cannot parse UE to assistant base station
The response of configuration information, master base station can also turn UE to the response of the configuration information of assistant base station by way of RRC container
Issue assistant base station.
Step 406: master base station is to core net transmitting path handover request.The path switching message is for certain bearer types
It is unwanted, such as establishes the segmentation carrying on master base station, is that no need to send the message.For establishing in auxiliary base
SCG carrying or SCG segmentation carrying on standing are needed.Message carries the GTP tunnel number of assistant base station distribution, for connecing
Receive the downlink data that core net is sent.
So far, segmentation signaling bear establishment process is completed.
Fig. 5 shows the flow chart of third embodiment according to the present invention.
Under the embodiment, master base station is LTE base station, and assistant base station is all the base station the new access technology of 5G (NR), Huo Zhezhu
Base station and assistant base station are all the base stations the new access technology of 5G (NR).Interface between base station is Xn interface, and each base station connects
To the core net of 5G, wherein the control plane of base station is connected to authentication locomotive function entity (abbreviation AMF), and the user of base station
Plane is connected to user-plane function (abbreviation UPF).The segmentation of CU and DU have been carried out to assistant base station gNB, and use two
Entity realizes the function of base station.Wherein, RRC protocol layer and PDCP protocol layer are realized on CU, and RLC/ is realized on DU
The function of MAC/ physical layer.Interface between CU and DU is known as F1 interface.
Step 501, assistant base station is increased request and sent to purpose assistant base station by master base station.
The main plot of UE on base station receives the measurement report of user, if on neighbouring assistant base station some cell letter
Number quality is met the requirements, then the main plot on master base station determines to establish supplementary cell on the assistant base station, and passes through doubly-linked
Fetch sharing data transmission.For example, base station is determined some or a few a Deta bearers originally on master base station MgNB
Data are sent also by assistant base station, that is, establish Split carrying.When the base station where PCell determines that increasing a cell makees
When for SCell, the base station where the base station to the SCell where PCell sends assistant base station and increases request message.
Master base station can also determine to send control signaling also by assistant base station and (to be sent to the RRC information of UE),
Master base station replicates control signaling, and a duplicate is sent to UE by master base station, another duplicate is sent to UE by assistant base station.
The reliability of transmission can be improved in this way.
Master base station sends the message that assistant base station increases request to assistant base station, the message carry following one or
Multiple information:
(1) ability of UE, including wireless access capability, cryptographic capabilities；
(2) information for the Deta bearer established on assistant base station, the type comprising Deta bearer (e.g. hold by segmentation
Carry or SCG carrying or SCG segmentation carrying), the mark of the upper Deta bearer of Xn and the corresponding quality requirement of Deta bearer
QoS.Deta bearer mark can be the DRB mark of master base station distribution.It is carried if it is segmentation, core net is by quality stream (QoS
Flow quality requirement) is sent to master base station, and the quality requirement of QoS Flow is different from each other, and master base station is close quality requirement
QoS Flow, which is mapped to wireless data carrying DRB, the QoS Flow of multiple and different quality requirements, may map to the same DRB
On.Master base station determines qos requirement corresponding to some DRB, for example, right according to the different corresponding quality requirements of QoS flow
In rate guarantee (abbreviation GRB) business, select highest quality requirement as the corresponding qos requirement of DRB；Rate is not guaranteed
(abbreviation non-GRB) business selects minimum quality requirement as the corresponding qos requirement of DRB.Alternatively, by the letter of QoS flow
Breath (including QoS flow mark and corresponding quality requirement) and the map information of QoS flow to DRB are sent to assistant base station,
The quality requirement of DRB is determined by assistant base station.
If it is SCG carrying or SCG segmentation carrying, core net is by the quality requirement of quality stream (QoS Flow) to main base
It stands transmission, wherein the quality requirement of QoS Flow is different from each other, and the close QoS Flow of quality requirement is mapped to nothing by master base station
The QoS Flow of line Deta bearer DRB, multiple and different quality requirements may map on the same DRB.When master base station will be established
When SCG carrying or SCG segmentation carry, by the information for carrying QoS flow, (information of QoS flow includes that QoS flow is marked
Know and corresponding quality requirement) assistant base station increase the message of request and sent to assistant base station, and QoS is determined by assistant base station
The mapping of flow to DRB determines the quality requirement of DRB, and configures user plane protocol layer according to the quality requirement of DRB,
User plane including the user plane and the end UE established on assistant base station, such as PDCP/RLC/MAC.Alternatively, will carry
The message that the assistant base station of the map information of the information and QoS flow to DRB of QoS flow increases request is sent out to assistant base station
It send, and determines the quality requirement of DRB by assistant base station.Or master base station is wanted according to the different corresponding quality of QoS flow
It asks, determines qos requirement corresponding to the DRB of QoS Flow mapping, specific method will be as described above, master base station will carry QoS
The assistant base station of the information of flow, the map information of QoS flow to DRB and the corresponding quality requirement of DRB increases request
Message is sent to assistant base station, and configures user plane protocol layer according to the quality of DRB by assistant base station, is included in auxiliary base
The user plane of the user plane and the end UE established on standing.
The message of Deta bearer also includes the GTP tunnel number for being used to receive upstream data of master base station distribution.If data
The type of carrying is SCG carrying or SCG segmentation carrying, then the information of the Deta bearer also includes what core net SGW was distributed
For receiving the GTP tunnel number of upstream data；
(3) information for dividing signaling, the information for dividing signaling includes the mark of segmentation signaling.Can using segmentation signaling as
A kind of new bearing mode configures on assistant base station, such as identifying segmentation signaling is SRB1 or SRB2.Believed by segmentation
Mark is enabled, its corresponding user plane can be established in X2 interface.Or segmentation signaling in the way of dividing Deta bearer
It is configured on assistant base station, using segmentation signaling as a kind of segmentation Deta bearer, assistant base station is not aware that in Xn assistant base station
What is transmitted on tunnel is segmentation signaling or Deta bearer.Here, the mark for dividing signaling refers to mark using Deta bearer
Know (such as DRB mark), master base station generates the mark, and saves the corresponding relationship of DRB mark and signaling；
(4) the corresponding qos requirement of segmentation signaling.For the data that core net is sent, the quality requirement (QoS) of data is core
The authentication policy server configuration of heart net, master base station is sent to by core net, then master base station is sent to assistant base station.It is right
In RRC signaling, without corresponding qos requirement.Master base station needs to be generated qos requirement corresponding to RRC signaling as its own, such as
It determines that its corresponding quality (QoS) requires according to the type (i.e. SRB1 or SRB2) of segmentation signaling, allows assistant base station according to this
Qos requirement establishes corresponding user plane, such as establishes RLC/MAC protocol layer.Assistant base station will also distribute user on Xn interface
The transport layer information of plane, such as.Each signaling is divided and is carried, assistant base station distributes a GTP tunnel number；
(5) divide the configuration information of signaling.For the data that core net is sent, the quality requirement (QoS) of data is core
The authentication policy server configuration of net, QoS is sent to by master base station by core net, then master base station is sent to auxiliary base
It stands.For RRC signaling, core net does not configure corresponding qos requirement.(i.e. SRB1 is also according to the type of segmentation signaling for master base station
It is SRB2) determine that its corresponding specific configuration information, master base station can be the configuration informations of segmentation signaling, for example including uplink
RLC, downlink RLC, priority, logic channel configuration RLC configuration information, to assistant base station send, assistant base station according to
The configuration information configures corresponding user plane, such as establishes RLC/MAC protocol layer.
(6) indicate information, indicate assistant base station, segmentation signaling bear using it is no be default configuration, or instruction it is auxiliary
Base station is helped, segmentation signaling bear is using default configuration information or explicit configuration.When UE access master base station, main base
It stands and is carried for UE configuration signal, specifically, SRB1 and SRB2 can be lacked using default configuration or using explicit configuration
The configuration information of province has preparatory definition in LTE specification, if using default configuration information, specific parameter, such as RLC
Configuration information, no need to send give UE, UE that value predetermined is also used in LTE radio interface specification to put down to configure user
Face.If using explicit configuration, master base station needs to configure specific parameter, such as the configuration information of RLC.When on assistant base station
When configuration segmentation signaling bear, master base station needs that assistant base station, segmentation signaling bear is told to configure using which kind of mode.Refer to
Show that information can be set into using default configuration, or is arranged to explicitly configure.When being arranged to default configuration, base is assisted
It stands using value predetermined in LTE radio interface specification and configures the protocol layers such as RLC, MAC.If being arranged to explicitly configure,
The configuration information of specific user plane, such as configuration information shown in (5) are sent to assistant base station by master base station.(5) institute
The configuration information shown may be embodied in RRC receptacle, and RRC container is that RRC correlation letter is sent between master base station and assistant base station
One container of breath, the inside contain the configuration information of the RRC of master base station configuration.Assistant base station can parse receptacle
RRC configuration information, obtain the configuration information of SRB1 and/or SRB2.Or configuration information shown in (5) is included in RRC container
Outside, information element configuration information shown in carrying (5) inside message by increasing request, such assistant base station are not required to
Parse the RRC configuration information that receptacle includes.
Or regulation assistant base station knows to establish and disappear when dividing signaling bear to get to assistant base station foundation request
The mark of the segmentation signaling bear carried in breath, such as SRB1 or SRB2, assistant base station default is using defined in LTE specification
Default configuration information configures user plane, comes for example, by using default RLC configuration parameter defined in LTE radio interface specification
Configure rlc protocol layer.In this way, to segmentation signaling bear on assistant base station, such as SRB1, user plane configuration may be with master base stations
The configuration information of the upper carrying is different, and the configuration of user plane is not optimal, and advantage is the reduction of master base station and auxiliary
Signalling between base station.
In step 502, carrying is established request message and sent to DU by the CU of assistant base station.
The CU sends the carrying to the DU and establishes request after receiving the assistant base station and increasing request message
Message, the carrying establish request message and carry one or more following information:
(1) mark of cell.One DU may have multiple cells, and cell ID is indicated to be established accordingly in which cell
Carrying.The mark of cell can be the whole network unique identification of cell, or within the scope of DU unique cell mark；
(2) mark carried.The mark of user plane between CU and DU, for example, establishing one between CU and DU
Tunnel come export one carrying on data, for the carrying, CU and DU can distribute a GTP tunnel number.Wherein, CU divides
The GTP tunnel number matched carries in 502 message, and the GTP tunnel number of DU distribution carries in 503 message.
(3) configuration information carried.The configuration information of carrying contains the configuration information to RLC, MAC and physical layer.
(4) whether carrying needs the instruction information of flow control.What is sent in carrying may be real data, either
Signaling transmitted by master base station, i.e., the RRC information sent to UE.CU know to be sent in the carrying be real data also
It is signaling transmitted by master base station, and assistant base station does not know transmitted particular content.For RRC information, because of RRC information
The frequency of transmission is lower, does not need flow control, therefore CU notifies whether DU needs the instruction of flow control by control plane
Information.Flow control can not be needed by instruction, implicit tells DU, and transmitted data do not need flow in the carrying
Control.If transmitted by the carrying is real data, CU can be arranged to need flow control in instruction.Or it is logical
User plane is crossed, to indicate not needing flow control.For the Deta bearer and signaling bear of segmentation, user plane be can establish
Between master base station and DU, in the case, master base station sends the data packet of user plane to DU, in the data of user plane
Inside packet format, master base station instruction DU does not need to send the data packet of flow control to master base station.Alternatively, user plane can be with
It establishes between CU and DU, master base station sends the data packet of user plane to CU, and CU sends out the data packet of user plane to DU
It send, in the data packet format of user plane, instruction DU does not need to send the data packet of flow control to CU.
(5) indicate information, indicate DU, segmentation signaling bear using it is no be default configuration, or instruction DU, segmentation letter
Enable carrying using default configuration information or explicit configuration.If using default configuration information, specific parameter, such as
The configuration information of RLC, no need to send give DU, DU to configure the agreements such as RLC, MAC using value predetermined in LTE specification
Layer.If being arranged to explicitly configure, CU is the configuration information of specific user plane, such as configuration information shown in (3), hair
Give DU.
Or regulation DU knows to establish when dividing signaling bear, i.e., carrying, which is established in request message, in this step wraps
The mark (i.e. (2)) of the carrying contained is arranged to the mark of signaling bear, such as SRB1 or SRB2, DU default use LTE specification
Defined in default configuration information configure user plane, match for example, by using default RLC defined in LTE radio interface specification
Parameter is set to configure rlc protocol layer.In this way, to segmentation signaling bear, such as SRB1, the configuration information (i.e. (3)) of carrying are not required to
DU is transferred to from CU, the user plane configuration on DU may with the carrying on master base station configuration information it is different, Yong Huping
The configuration in face is not optimal, and advantage is the reduction of the signalling between master base station and assistant base station.Assistant base station includes
CU and DU two entities.
Step 503, carrying is established response message and sent to CU by the DU of assistant base station.
Carrying is established response message and sent to CU by DU, which carries one or more following information:
The mark for the carrying being successfully established；
- DU is the GTP tunnel number of user plane distribution.
Step 504, assistant base station is increased response message and sent to master base station by assistant base station.
Assistant base station determines the configuration information carried on UE, assistant base station is on UE according to QoS the and UE ability of DRB
The configuration information of auxiliary carrying or secondary cell is included in RRC container, and the container is forwarded by master base station to UE.UE according to
The configuration is arranged each layer protocol in the end UE, such as RLC, MAC layer.Message also carry DRB mark or X2 user plane mark,
The corresponding transport layer information of the user plane (such as Tunnel Identifier).Assistant base station increase response message carry following one or
The multiple information of person:
(1) RRC container, wherein containing assistant base station to the configuration information of UE.RRC agreement on assistant base station determines
The configuration information of UE is included in RRC container, and is sent to UE by master base station by configuration information of the Deta bearer on UE.
Can also be comprising the configuration information of segmentation signaling bear in RRC container, such as the mark comprising dividing signaling and its is corresponding
The configuration information of RLC/MAC；The configuration information of corresponding RLC/MAC can be configured using default configuration or using explicit,
Default configuration or explicit configuration are described in above step, are omitted herein.
(2) information of the received Deta bearer of assistant base station, the mark (E-RAB ID) comprising Deta bearer and auxiliary
The GTP tunnel number for being used to receive downlink data that base station is distributed by Deta bearer；
(3) information of the received segmentation signaling bear of assistant base station, mark and assistant base station comprising signaling bear are
The GTP tunnel number for being used to receive downlink signaling data that signaling bear is distributed.Message carries the segmentation signaling being successfully established and holds
The mark of load, and/or the mark of the signaling bear comprising establishing failure.
The CU sends the assistant base station to the DU and increases response after receiving the carrying and establishing response message
Message
Step 505, master base station sends RRC reconfiguration request to UE.
Master base station does not parse RRC container, and RRC container is transmitted to UE.Master base station can match UE plus its own
Confidence breath, and the information of itself and assistant base station configuration is sent jointly into UE.
Step 506:UE, which reconfigures RRC, completes message to master base station transmission.
After UE configuration successful, response message is sent to master base station.The response message may be embodied in sent in 302 steps
Configuration information response, that is, contain the response to master base station configuration information, also contain to assistant base station configuration information
Response.If desired, UE also needs to carry out random access procedure with new assistant base station, and carried out together with new assistant base station
Step.After synchronization, assistant base station can start to send data to UE.
Step 507: master base station, which reconfigures RRC, completes message to assistant base station transmission.
By the configuration at the end UE, successful information notifies assistant base station to master base station.Because UE is confirmation message to master base station
It sends, so master base station needs confirmation message to be transmitted to assistant base station.If master base station cannot parse UE to assistant base station
The response of configuration information, master base station can also turn UE to the response of the configuration information of assistant base station by way of RRC container
Issue assistant base station.
So far, segmentation signaling bear establishment process is completed.
Step 508: master base station is to core net transmitting path handover request.The path switching message is for certain bearer types
It is unwanted, such as establishes the segmentation carrying on master base station, is that no need to send the message.For establishing in auxiliary base
SCG carrying or SCG segmentation carrying on standing are needed.Message carries the GTP tunnel number of assistant base station distribution, for connecing
Receive the downlink data that core net is sent.
Can with hardware or firmware or software or computer code, or combinations thereof realize above description according to the present invention
Device and method.In addition, software or computer code can also be stored in non-provisional recording medium, such as CD ROM,
RAM, erasable or rewritable ROM, floppy disk, CD, DVD, storage chip, hard disk, magnetic storage medium, optical recording medium or
Magneto-optic disk, or it is initially stored in long-range recording medium, computer readable recording medium or non-provisional machine readable media
It is upper that computer code on local recording medium is downloaded and stored in by network, so that method described herein can be
Be stored in the recording medium using general purpose computer, digital computer or application specific processor or such as ASIC or FPGA can
Programming or in specialized hardware this software, software module, software object, instruction, application, small routine, is answered at computer code
It is reproduced in program.As understood in this field, computer, processor, microprocessor controller or programmable hardware include can
With store or receive when by computer, processor or hardware access and execute when realize processing method described herein software or
The volatibility of computer code and/or nonvolatile memory and memory member, such as RAM, ROM, flash memory etc.
Deng.Further, it will be appreciated that the execution of code will lead to when general purpose computer accesses the code for realizing processing shown here
The special purpose computer for executing processing shown here is converted into computer.In addition, program can by such as by it is wired/
With being wirelessly connected any media electronic of signal of communication sent etc or its equivalent transmits.Program and computer-readable record
Medium can also be distributed on the computer system of network coupling so that computer-readable code is stored in a distributed manner
And execution.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (15)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR2018/003541 WO2018174683A1 (en) | 2017-03-24 | 2018-03-26 | Method and apparatus for data transmission in wireless communication system |
| EP18772534.6A EP3603317B1 (en) | 2017-03-24 | 2018-03-26 | Methods, primary base station and secondary base station for data transmission in wireless communication system |
| US16/497,216 US11589262B2 (en) | 2017-03-24 | 2018-03-26 | Method and apparatus for data transmission in wireless communication system |
| KR1020197031565A KR102553626B1 (en) | 2017-03-24 | 2018-03-26 | Method and apparatus for data transmission in a wireless communication system |
| EP22191389.0A EP4114131B1 (en) | 2017-03-24 | 2018-03-26 | Methods, primary base station and secondary base station for data transmission in a wireless communication system |
| US18/169,515 US12028752B2 (en) | 2017-03-24 | 2023-02-15 | Method and apparatus for data transmission in wireless communication system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020164620A1 (en) * | 2019-02-15 | 2020-08-20 | 华为技术有限公司 | Communication processing method for terminal information and related device |
| CN111787621A (en) * | 2019-02-13 | 2020-10-16 | Oppo广东移动通信有限公司 | A bearer configuration method and device, and network equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111787621A (en) * | 2019-02-13 | 2020-10-16 | Oppo广东移动通信有限公司 | A bearer configuration method and device, and network equipment |
| CN111787621B (en) * | 2019-02-13 | 2023-07-14 | Oppo广东移动通信有限公司 | Bearer configuration method and device, and network equipment |
| WO2020164620A1 (en) * | 2019-02-15 | 2020-08-20 | 华为技术有限公司 | Communication processing method for terminal information and related device |
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