CN104797009B - Radio bearer method for releasing in dual link network and system - Google Patents
Radio bearer method for releasing in dual link network and system Download PDFInfo
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- CN104797009B CN104797009B CN201410027772.4A CN201410027772A CN104797009B CN 104797009 B CN104797009 B CN 104797009B CN 201410027772 A CN201410027772 A CN 201410027772A CN 104797009 B CN104797009 B CN 104797009B
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Abstract
The problem of the invention discloses the radio bearer method for releasing and system in a kind of dual link network, are related to wireless communication technology field, and the present invention solves in the dual link network using 3C frameworks, and DRB discharges between SeNB and UE.Under certain trigger condition, MeNB can initiate the release process of DRB between SeNB and UE, and implementation method is simple, take full advantage of the advantage of doubly-linked connection technology, ensure that the regular traffic transmission of user.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to the radio bearer method for releasing in a kind of dual link network
And system.
Background technology
Dual link network is the research hotspot of Current wireless communication technology, and the network architecture is as shown in Figure 1.In this network
In, user terminal（UE）While and macro base station（MeNB）And micro-base station（SeNB）Between keep eat dishes without rice or wine to connect, it means that macro base
It stands and micro-base station can provide service for UE simultaneously.It is communicated by using dual link, when UE carries out movement simultaneously inside macrocell
Into or when leaving a cell, can not execute handoff procedure, and only by macro base station using resource reconfiguration process come
It is configured for UE or discharges small local resource, the relevant control process that core net executes at this time will greatly reduce, to reduce core
Net signaling traffic load, further, since not executing handoff procedure, the mobility performance of network will have larger improvement.It can be seen that introducing
Dual link communicates the signaling traffic load that can reduce network, can improve the mobility performance of network in addition.
In dual link network, it is currently suggested basis of two kinds of user plane frameworks as future studies：1A and 3C frameworks,
With reference to Fig. 2 a）And 2b）, wherein RLC is radio link control entity, and DTCH is Dedicated Traffic Channel, and MAC is media access control
System.Under 3C frameworks, support to shunt EPS carryings, i.e. MeNB and SeNB can establish Data Radio Bearer with UE respectively
（Data Radio Bearer, DRB）To transmit the same evolved packet system（Evolved Packet System, EPS）It holds
It carries.
In existing LTE system, the release of carrying can be by packet data network gateway（PDNGateway, PGW）Or mobility
Management entity（Mobility Management Entity, MME）Triggering.
The detailed process when release of carrying is triggered by PGW is as shown in figure 3, work as base station（eNB）Receive the carrying of MME transmissions
After release request, wireless heterogeneous networks are sent to UE（Radio Resource Control, RRC）Connection reconfiguration message, message
In comprising need discharge DRB mark.After UE completes DRB release processes, " completion of RRC connection reconfigurations " message is fed back to eNB.
Additionally, due to the locals eNB reason（Such as abnormal resource-constrained or quality of wireless channel problem）, may be sent out by eNB
Play carrying release process.After eNB completes carrying release process, " carrying release instruction " is sent to MME, the release of carrying by
Detailed process when MME is triggered is as shown in figure 4, the step 3 of step 7 including Fig. 3 is to 7 in Fig. 4 at this time, so outline.
In the dual link network using 3C frameworks, supports to shunt EPS carryings, that is, be directed to the same EPS and carry
Data can establish DRB respectively with MeNB and SeNB and be transmitted.However, under 3C frameworks, it is not present between SeNB and MME
S1 interfaces（It can not directly carry out information exchange）, when needing to discharge EPS carryings, can not carry and release according to existing LTE system
It lets off journey and sends carrying release request from MME to SeNB, complete the DRB releases between SeNB and UE.
Invention content
（One）Technical problems to be solved
The technical problem to be solved by the present invention is to：How in the dual link network of 3C frameworks, between realization SeNB and UE
DRB release.
（Two）Technical solution
In order to solve the above technical problems, the present invention provides the radio bearer method for releasing in a kind of dual link network, institute
The method of stating includes the following steps：
S1：Macro base station sends carrying release instruction to micro-base station, and the carrying release instruction includes：Data to be released without
Line carries DRB marks and evolved packet system EPS load identifications corresponding with DRB marks；
S2：After the micro-base station receives the carrying release instruction, discharged according to the instruction of the carrying release instruction
Corresponding wireless spread-spectrum technology RLC entities and Dedicated Traffic Channel DTCH, and send the first carrying release to the macro base station and ring
It answers；
S3：The macro base station sends radio resource control RRC connection reconfiguration message to user terminal；
S4：After the user terminal receives the RRC connection reconfigurations message, according to the finger of the RRC connection reconfigurations message
Show and complete DRB releases, sending RRC connection reconfigurations to the macro base station completes message；
S5：After the macro base station receives the RRC connection reconfigurations completion message, the second carrying is sent to the micro-base station
Release response, to realize that the DRB between micro-base station and user terminal discharges.
Wherein, include before step S1：
S011：The macro base station is received discharges request by the carrying transmitted by mobility management entity MME, and judges current
Whether EPS carryings have corresponding micro-base station DRB, if so, thening follow the steps S1.
Wherein, include before step S1：
S022：The macro base station judges whether to need to discharge the micro-base station DRB, if so, thening follow the steps S1.
Wherein, include before step S1：
S033：The micro-base station judges whether to need to discharge DRB, if so, thening follow the steps S034；
S034：The macro base station is received discharges request by the carrying transmitted by the micro-base station, and determines whether micro-
Base station carries out DRB releases, if so, thening follow the steps S1.
Wherein, in step S034, if it is not, then the macro base station does not discharge DRB message to micro-base station transmission, and directly
Terminate flow.
The invention also discloses in a kind of dual link network radio bearer discharge system, the system comprises macro base station,
Micro-base station and user terminal,
The macro base station is used to send carrying release instruction to micro-base station, and the carrying release instruction includes：To be released
Data Radio Bearer DRB marks and evolved packet system EPS load identifications corresponding with DRB marks；
After the micro-base station is for receiving the carrying release instruction, discharged according to the instruction of the carrying release instruction
Corresponding wireless spread-spectrum technology RLC entities and Dedicated Traffic Channel DTCH, and send the first carrying release to the macro base station and ring
It answers；
The macro base station is additionally operable to send radio resource control RRC connection reconfiguration message to user terminal；
After the user terminal is used to receive the RRC connection reconfigurations message, according to the finger of the RRC connection reconfigurations message
Show and complete DRB releases, sending RRC connection reconfigurations to the macro base station completes message；
The macro base station is additionally operable to after receiving the RRC connection reconfigurations completion message, and second is sent to the micro-base station
Carrying release response, to realize that the DRB between micro-base station and user terminal discharges.
Wherein, the macro base station is additionally operable to receive discharges request by the carrying transmitted by mobility management entity MME, and sentences
Whether disconnected current EPS carryings have corresponding micro-base station DRB.
Wherein, the macro base station is additionally operable to judge whether to need to discharge the micro-base station DRB.
Wherein, the micro-base station is additionally operable to judge whether to need to discharge DRB；
The macro base station is additionally operable to receive discharges request by the carrying transmitted by the micro-base station, and determines whether micro-
Base station carries out DRB releases.
Wherein, the macro base station does not discharge DRB message to micro-base station transmission.
（Three）Advantageous effect
The problem of present invention solves in the dual link network using 3C frameworks, and DRB discharges between SeNB and UE.Centainly touching
Under the conditions of hair, MeNB can initiate the release process of DRB between SeNB and UE, and implementation method is simple, take full advantage of dual link skill
The advantage of art ensure that the regular traffic transmission of user.
Description of the drawings
Fig. 1 is the framework schematic diagram of dual link network；
Fig. 2 a) it is user plane 1A configuration diagrams in dual link network；
Fig. 2 b) it is user plane 3C configuration diagrams in dual link network；
Fig. 3 is the flow chart of the carrying release of PGW triggerings in the prior art；
Fig. 4 is the flow chart of the carrying release of MME triggerings in the prior art；
Fig. 5 is the flow diagram of the radio bearer method for releasing in the dual link network of one embodiment of the present invention；
Fig. 6 is the flow chart of the radio bearer method for releasing in the dual link network of the first embodiment of the invention；
Fig. 7 is the flow chart of the radio bearer method for releasing in the dual link network of second of embodiment of the invention；
Fig. 8 is the flow chart of the radio bearer method for releasing in the dual link network of the third embodiment of the invention.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
Fig. 5 is the flow diagram of the radio bearer method for releasing in the dual link network of one embodiment of the present invention；Ginseng
According to Fig. 5, the described method comprises the following steps：
S1：Macro base station sends carrying release instruction to micro-base station, and the carrying release instruction includes：Data to be released without
Line carries DRB marks and evolved packet system EPS load identifications corresponding with DRB marks；
S2：After the micro-base station receives the carrying release instruction, discharged according to the instruction of the carrying release instruction
Corresponding wireless spread-spectrum technology RLC entities and Dedicated Traffic Channel DTCH, and send the first carrying release to the macro base station and ring
It answers；
S3：The macro base station sends radio resource control RRC connection reconfiguration message to user terminal；
S4：After the user terminal receives the RRC connection reconfigurations message, according to the finger of the RRC connection reconfigurations message
Show and complete DRB releases, sending RRC connection reconfigurations to the macro base station completes message；
S5：After the macro base station receives the RRC connection reconfigurations completion message, the second carrying is sent to the micro-base station
Release response, to realize that the DRB between micro-base station and user terminal discharges.
In present embodiment, step S1~S2 does not have sequence first with step S3~5, can first carry out step S3~S5,
Step S1~S2 is executed again, and only macro base station receives the first carrying release response and rung to the second carrying release of micro-base station feedback
Ying Hou just calculates the DRB releases realized between micro-base station and user terminal.
The radio bearer method for releasing of present embodiment can realize by three kinds of triggering modes, respectively：One, PGW or MME
The EPS carrying releases of triggering；Specially：The macro base station is received is asked by the carrying release transmitted by mobility management entity MME
It asks, and judges whether current EPS carryings have corresponding micro-base station DRB, if so, thening follow the steps S1；
Two, the EPS carrying releases of MeNB triggerings；Specially：The macro base station judges whether to need to discharge the micro-base station
DRB, if so, thening follow the steps S1；
Three, the EPS carrying releases of SeNB triggerings；The micro-base station judges whether to need to discharge DRB, if desired discharges, then
The macro base station is received discharges request by the carrying transmitted by the micro-base station, and determines whether that micro-base station carries out DRB and releases
It puts, if allowing to discharge, thens follow the steps S1.
When due to the third triggering mode, determine whether that micro-base station carries out EPS carrying releases by macro base station, so,
When being judged as that micro-base station is not allowed to carry out DRB releases, then the macro base station does not discharge DRB message to micro-base station transmission,
And directly terminate flow.
In present embodiment, the signals such as message, instruction, request between micro-base station and macro base station pass through Xn interfaces or X2
Interface is transmitted.
Embodiment 1
The present embodiment carries release by the EPS that PGW or MME is triggered, with reference to Fig. 6, the radio bearer release side of the present embodiment
Method includes the following steps：
1, when the MeNB carryings for receiving MME transmissions discharge request, it is corresponding that MeNB will first determine whether EPS carryings have
SeNB DRB.If so, then triggering the release that SeNB carries out DRB.
2, MeNB to SeNB send carrying release instruction, it is described carrying release instruction comprising need discharge DRB mark and
Corresponding EPS load identifications.
3, after SeNB receives the carrying release instruction that MeNB is sent, the instruction indicated according to the carrying release carries out DRB
Release, discharge corresponding RLC entities and DTCH logic channels, and to the first carrying release response of MeNB feedbacks, confirm release
It completes.
4, MeNB sends RRC connection reconfiguration message to UE.
5, it after UE receives the RRC connection reconfigurations message, completes DRB according to the instruction of the RRC connection reconfigurations message and releases
After putting, sends RRC connection reconfigurations to MeNB and complete message.
6, MeNB sends the second carrying release response, feedback UE is true after receiving RRC connection reconfigurations and completing message to SeNB
Recognize carrying release to complete；After SeNB receives the second carrying release response of MeNB feedbacks, the release of DRB between SeNB and UE is completed
Journey.
7, MeNB sends releasing bearing response to MME；
8, UE carries out Non-Access Stratum to MeNB（Non-Access Stratrum, NAS）Transmission；
9, MeNB sends releasing bearing context acknowledgement message to MME.
Embodiment 2
The present embodiment is triggered by MeNB realizes EPS carrying releases, with reference to Fig. 7, the radio bearer method for releasing of the present embodiment
Include the following steps：
1, MeNB judges whether to discharge the DRB of SeNB, is divided into two kinds of scenes：
If 1a, MeNB are due to local（Such as abnormal resource-constrained or quality of wireless channel problem）, need to send out
It plays EPS and carries release process：MeNB first determines whether the EPS carryings of release have corresponding SeNB DRB to have been established, if so,
Then trigger the release that SeNB carries out DRB.
1b, MeNB measure the factors such as reported result, own load, quality of service and channel quality according to UE, or combine
Factors, the synthesis such as SeNB loads at this time, quality of service and channel situation account for, and determine to cancel or change and be held to some EPS
The shunting of load, the then release of MeNB triggerings SeNB progress DRB.
2, MeNB to SeNB send carrying release instruction, it is described carrying release instruction comprising need discharge DRB mark and
Corresponding EPS load identifications.
3, after SeNB receives the carrying release instruction that MeNB is sent, the instruction indicated according to the carrying release carries out DRB
Release, discharge corresponding RLC entities and DTCH logic channels, and to the first carrying release response of MeNB feedbacks, confirm release
It completes.
4, MeNB sends RRC connection reconfiguration message to UE.
5, it after UE receives the RRC connection reconfigurations message, completes DRB according to the instruction of the RRC connection reconfigurations message and releases
After putting, sends RRC connection reconfigurations to MeNB and complete message.
6, MeNB sends the second carrying release response, feedback UE is true after receiving RRC connection reconfigurations and completing message to SeNB
Recognize carrying release to complete, after SeNB receives the second carrying release response of MeNB feedbacks, completes the release of DRB between SeNB and UE
Journey.
If 7, MeNB needs to discharge EPS carryings due to local, after receiving RRC connection reconfigurations and completing message,
Releasing bearing instruction is sent to MME, instruction core net carries out the release of corresponding EPS carryings；If MeNB is because changing or cancelling pair
The shunting of a certain EPS carrying and trigger SeNB and carry out DRB releases, then be not necessarily to send the instruction to MME.
Embodiment 3
The present embodiment is triggered by SeNB realizes EPS carrying releases, can first carry out the release process of the sides UE DRB（Connected by RRC
Connect reconstitution process completion）, then by the corresponding RLC entities of release and DTCH of SeNB, with reference to Fig. 8, the radio bearer of the present embodiment
Method for releasing includes the following steps：
1, SeNB1 is according to factors such as load, quality of service and channel situations（Such as abnormal resource-constrained or wireless channel matter
Amount problem etc.）, judge whether to need to discharge DRB, trigger the process if necessary.
2, SeNB1 to MeNB send carrying release request, it is described carrying release request comprising need discharge DRB mark and
Corresponding EPS load identifications.
3, after MeNB receives the carrying release request that SeNB1 is sent, determine whether that SeNB1 carries out DRB releases.
If it is not allowed, then MeNB does not discharge DRB message to SeNB1 feedbacks（NACK）", and directly terminate flow.
If it is allowed, then MeNB deletes the SeNB1DRB relevant configuration informations being locally stored according to carrying release request, and
Carrying release instruction is sent to SeNB1（ACK）, the carrying release instruction includes the DRB marks for needing to discharge and corresponding EPS
Load identification.
To ensure that the transmission of user's regular traffic, MeNB can determine whether to need again to shunt EPS carryings.If
It needs, then triggers other SeNB and establish DRB, sending carrying to SeNB2 establishes request, including relevant information is established in carrying.
After SeNB2 indicates that completing carrying establishes according to MeNB, feedback carrying, which is established, responds to MeNB.
4, after SeNB receives the carrying release instruction that MeNB is sent, the instruction indicated according to the carrying release carries out DRB
Release, discharge corresponding RLC entities and DTCH logic channels, and to the first carrying release response of MeNB feedbacks, confirm release
It completes.
5, MeNB sends RRC connection reconfiguration message to UE.
Optionally, MeNB can establish relevant information comprising DRB simultaneously in RRC connection reconfiguration message, indicate UE and SeNB2
Establish new DRB.
6, it after UE receives the RRC connection reconfigurations message, completes DRB according to the instruction of the RRC connection reconfigurations message and releases
After putting, sends RRC connection reconfigurations to MeNB and complete message.
7, it after UE receives the RRC connection reconfigurations message, completes DRB according to the instruction of the RRC connection reconfigurations message and releases
After putting, sends RRC connection reconfigurations to MeNB and complete message.
8, MeNB sends the second carrying release response, with feedback after receiving RRC connection reconfigurations and completing message to SeNB1
UE confirms that carrying release is completed.
The invention also discloses in a kind of dual link network radio bearer discharge system, the system comprises macro base station,
Micro-base station and user terminal,
The macro base station is used to send carrying release instruction to micro-base station, and the carrying release instruction includes：To be released
Data Radio Bearer DRB marks and evolved packet system EPS load identifications corresponding with DRB marks；
After the micro-base station is for receiving the carrying release instruction, discharged according to the instruction of the carrying release instruction
Corresponding wireless spread-spectrum technology RLC entities and Dedicated Traffic Channel DTCH, and send the first carrying release to the macro base station and ring
It answers；
The macro base station is additionally operable to send radio resource control RRC connection reconfiguration message to user terminal；
After the user terminal is used to receive the RRC connection reconfigurations message, according to the finger of the RRC connection reconfigurations message
Show and complete DRB releases, sending RRC connection reconfigurations to the macro base station completes message；
The macro base station is additionally operable to after receiving the RRC connection reconfigurations completion message, and second is sent to the micro-base station
Carrying release response, to realize that the DRB between micro-base station and user terminal discharges.
Preferably, the macro base station is additionally operable to receive discharges instruction by the carrying transmitted by mobility management entity MME, and
Judge whether current EPS carryings have corresponding micro-base station DRB.
Preferably, the macro base station is additionally operable to judge whether to need to discharge the micro-base station DRB.
Preferably, the micro-base station is additionally operable to judge whether to need to discharge DRB；
The macro base station is additionally operable to receive discharges instruction by the carrying transmitted by the micro-base station, and determines whether micro-
Base station carries out DRB releases.
Preferably, the macro base station does not discharge DRB message to micro-base station transmission.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, in relation to the common of technical field
Technical staff can also make a variety of changes and modification without departing from the spirit and scope of the present invention, therefore all
Equivalent technical solution also belongs to scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (10)
1. the radio bearer method for releasing in a kind of dual link network, which is characterized in that the described method comprises the following steps：
S1：Macro base station sends carrying release instruction to micro-base station, and the carrying release instruction includes：Data to be released are wirelessly held
Carry DRB marks and evolved packet system EPS load identifications corresponding with DRB marks；
S2：After the micro-base station receives the carrying release instruction, discharged according to the instruction of the carrying release instruction corresponding
Wireless spread-spectrum technology RLC entities and Dedicated Traffic Channel DTCH, and to the macro base station send first carrying release response；
S3：The macro base station sends radio resource control RRC connection reconfiguration message to user terminal；
S4：After the user terminal receives the RRC connection reconfigurations message, the instruction according to the RRC connection reconfigurations message is complete
It is discharged at DRB, sending RRC connection reconfigurations to the macro base station completes message；
S5：After the macro base station receives the RRC connection reconfigurations completion message, the second carrying release is sent to the micro-base station
Response, to realize that the DRB between micro-base station and user terminal discharges.
2. the method as described in claim 1, which is characterized in that include before step S1：
S011：The macro base station is received discharges request by the carrying transmitted by mobility management entity MME, and judges current EPS
Whether carrying has corresponding micro-base station DRB, if so, thening follow the steps S1.
3. the method as described in claim 1, which is characterized in that include before step S1：
S022：The macro base station judges whether to need to discharge micro-base station DRB, if so, thening follow the steps S1.
4. the method as described in claim 1, which is characterized in that include before step S1：
S033：The micro-base station judges whether to need to discharge DRB, if so, thening follow the steps S034；
S034：The macro base station is received discharges request by the carrying transmitted by the micro-base station, and determines whether micro-base station
DRB releases are carried out, if so, thening follow the steps S1.
5. method as claimed in claim 4, which is characterized in that in step S034, if it is not, then the macro base station is to micro- base
Transmission of standing does not discharge DRB message, and directly terminates flow.
6. the radio bearer in a kind of dual link network discharges system, which is characterized in that the system comprises macro base station, micro-base stations
And user terminal,
The macro base station is used to send carrying release instruction to micro-base station, and the carrying release instruction includes：Data to be released
Radio bearer DRB marks and evolved packet system EPS load identifications corresponding with DRB marks；
After the micro-base station is for receiving the carrying release instruction, discharged according to the instruction of the carrying release instruction corresponding
Wireless spread-spectrum technology RLC entities and Dedicated Traffic Channel DTCH, and to the macro base station send first carrying release response；
The macro base station is additionally operable to send radio resource control RRC connection reconfiguration message to user terminal；
The user terminal is for after receiving the RRC connection reconfigurations message, the instruction according to the RRC connection reconfigurations message to be complete
It is discharged at DRB, sending RRC connection reconfigurations to the macro base station completes message；
The macro base station is additionally operable to after receiving the RRC connection reconfigurations completion message, and the second carrying is sent to the micro-base station
Release response, to realize that the DRB between micro-base station and user terminal discharges.
7. system as claimed in claim 6, which is characterized in that the macro base station is additionally operable to receive by mobility management entity
Carrying release request transmitted by MME, and judge whether current EPS carryings have corresponding micro-base station DRB.
8. system as claimed in claim 6, which is characterized in that the macro base station is additionally operable to judge whether to need to discharge micro-base station
DRB。
9. system as claimed in claim 6, which is characterized in that the micro-base station is additionally operable to judge whether to need to discharge DRB；
The macro base station is additionally operable to receive discharges request by the carrying transmitted by the micro-base station, and determines whether micro-base station
Carry out DRB releases.
10. system as claimed in claim 9, which is characterized in that the macro base station does not discharge DRB to micro-base station transmission and disappears
Breath.
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| US20180098241A1 (en) * | 2016-09-30 | 2018-04-05 | Huawei Technologies Co., Ltd. | Method and apparatus for ordering of protocol data unit delivery |
| CA3071469A1 (en) * | 2017-08-04 | 2019-02-07 | Huawei Technologies Co., Ltd. | Method for obtaining data radio bearer identifier and base station |
| CN110972335B (en) | 2018-09-29 | 2022-04-12 | 华为技术有限公司 | Mode switching method, data stream splitting method and device |
| CN112954735B (en) * | 2019-05-16 | 2022-07-19 | Oppo广东移动通信有限公司 | Measurement reporting method, electronic equipment and storage medium |
| CN113938841B (en) * | 2020-07-14 | 2022-10-28 | 上海朗帛通信技术有限公司 | Method and device used in node of wireless communication |
| CN112367716B (en) * | 2020-10-30 | 2023-03-31 | Oppo广东移动通信有限公司 | Wireless communication method, terminal equipment and network equipment |
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| CN101686557A (en) * | 2008-09-22 | 2010-03-31 | 华为技术有限公司 | Method and device for sending multi-cell scheduling information and user equipment |
| WO2011156769A1 (en) * | 2010-06-10 | 2011-12-15 | Interdigital Patent Holdings, Inc. | Reconfiguration and handover procedures for fuzzy cells |
| CN103096448A (en) * | 2011-10-28 | 2013-05-08 | 华为技术有限公司 | Method, user equipment and access point of controlling uplink power |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101686557A (en) * | 2008-09-22 | 2010-03-31 | 华为技术有限公司 | Method and device for sending multi-cell scheduling information and user equipment |
| WO2011156769A1 (en) * | 2010-06-10 | 2011-12-15 | Interdigital Patent Holdings, Inc. | Reconfiguration and handover procedures for fuzzy cells |
| CN103096448A (en) * | 2011-10-28 | 2013-05-08 | 华为技术有限公司 | Method, user equipment and access point of controlling uplink power |
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