CN104797000B - Method for establishing wireless load-bearing and system in dual link network - Google Patents
Method for establishing wireless load-bearing and system in dual link network Download PDFInfo
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- CN104797000B CN104797000B CN201410027742.3A CN201410027742A CN104797000B CN 104797000 B CN104797000 B CN 104797000B CN 201410027742 A CN201410027742 A CN 201410027742A CN 104797000 B CN104797000 B CN 104797000B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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Abstract
The invention discloses the method for establishing wireless load-bearing and system in a kind of dual link network, it is related to wireless communication technology field, the present invention is solved in the dual link network using 3C frameworks, the problem of DRB is established between SeNB and UE, under certain trigger condition, what MeNB can initiate DRB between SeNB and UE establishes process, whether and when MeNB, which carries out EPS carrying branching process, does not influence the processing of core net, reduce the change to existing system to the maximum extent, implementation method is simple, take full advantage of the advantage of doubly-linked connection technology, it ensure that the regular traffic transmission of user.
Description
Technical field
The present invention relates to wireless communication technology field, the method for establishing wireless load-bearing in more particularly to 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 perform 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 performs at this time will greatly reduce, so as to reduce core
Net signaling traffic load, further, since not performing handoff procedure, the mobility performance of network will have larger improvement.It can be seen that it introduces
Dual link, which communicates, can reduce the signaling traffic load of 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 same evolved packet system（Evolved Packet System, EPS）It holds
It carries.
In existing LTE system, the process of establishing of carrying is by packet data network gateway（PDN Gateway, PGW）Triggering
's.Idiographic flow is as shown in Figure 3：
1) PGW sends carrying and establishes request to gateway（SGW）；
2) SGW will be carried to establish and be asked to be sent to mobility management entity（Mobility Management Entity,
MME）.
3) after MME is handled, by S1 interfaces, to base station（eNB）It sends carrying and establishes request（It carries and marks comprising EPS
Know, EPS bearer quality of service QoS, session management request, the tunnel endpoint identifier S1-TEID of S1 interfaces）.
4) eNB is by EPS bearer quality of service（QoS）It is mapped with radio bearer QoS, and sends RRC connection reconfigurations and disappear
It ceases to UE.
5) UE sends RRC connection reconfigurations to eNB and completes message, confirms that carrying is established；
6) eNB sends carrying to MME and establishes response, confirms that carrying is established；
7) UE sends session management response to eNB；
8) eNB sends session management response to MME；
9) carrying that eNB transmissions are successfully received in MME establishes response with after session managing response, sending and carrying to SGW
Establish response；
10) SGW sends carrying to PGW and establishes response, completes loading establishing process.
In the dual link network using 3C frameworks, support to shunt EPS carryings, i.e., carried for same EPS
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, therefore carrying can not be sent to SeNB from MME according to existing LTE system loading establishing process and establish request progress SeNB
The foundation of DRB between UE.
Invention content
（One）Technical problems to be solved
The technical problem to be solved by the present invention is to：How to realize in the dual link network of 3C frameworks, DRB between SeNB and UE
The problem of establishing.
（Two）Technical solution
In order to solve the above technical problems, the present invention provides the method for establishing wireless load-bearing in a kind of dual link network, institute
The method of stating includes the following steps：
S1：Macro base station sends carrying to micro-base station and establishes instruction, and the carrying is established instruction and included：First configuration information；
S2：After the micro-base station receives the carrying foundation instruction, it is configured, is matched according to first configuration information
After the completion of putting, response is established to the first carrying of macro base station feedback；
S3：The macro base station sends radio resource control RRC connection reconfiguration message, the RRC connections weight to user terminal
Include with message：Second configuration information；
S4：After the user terminal receives the RRC connection reconfigurations message, matched according to second configuration information
It puts, after the completion of configuration, message is completed to macro base station feedback RRC connection reconfigurations；
S5：The macro base station sends the second carrying after receiving the RRC connection reconfigurations and completing message, to micro-base station and builds
Vertical response, to complete the foundation of the DRB between micro-base station and user terminal.
Wherein, first configuration information and the second configuration information include：Evolved packet system EPS load identifications, DRB
Mark, wireless spread-spectrum technology RLC configurations, Logic Channel Identifier and logic channel configuration.
Wherein, second configuration information further includes：Micro-base station identifies.
Wherein, in step S2, when being configured according to first configuration information, if the DRB marks in instruction are established in carrying
It is occupied to know corresponding DRB, then occupied DRB is not configured by the micro-base station；Response is established in first carrying
Include：The DRB identification informations not being configured.
Wherein, it is further included before step S1：
S001：The macro base station judges whether that triggering micro-base station is needed to establish DRB, if so, performing step S1.
Wherein, it is further included before step S001：
S000：Request is established in the carrying that the macro base station receives transmitted by mobility management entity MME；
It is further included after step S5：
S6：The macro base station sends carrying to the MME and establishes response.
Wherein, in step S001, the macro base station is according to own situation, user terminal measurement reported result and micro-base station feelings
At least one of condition is to determine whether need triggering micro-base station to establish DRB, the own situation includes：Own load, business matter
Amount and channel quality, the micro-base station situation include：Micro-base station load, quality of service and channel quality.
The invention also discloses the radio bearers in a kind of dual link network to establish system, the system comprises：Micro-base station,
Macro base station and user terminal,
Macro base station is used to send carrying foundation instruction to micro-base station, and the carrying is established instruction and included：First configuration information；
After the micro-base station is for receiving the carrying foundation instruction, it is configured according to first configuration information,
After the completion of configuration, response is established to the first carrying of macro base station feedback；
The macro base station is additionally operable to send radio resource control RRC connection reconfiguration message, the RRC connections to user terminal
Reallocation message includes：Second configuration information；
After the user terminal is for receiving the RRC connection reconfigurations message, carried out according to second configuration information
After the completion of configuration, message is completed to macro base station feedback RRC connection reconfigurations for configuration；
The macro base station is additionally operable to after receiving the RRC connection reconfigurations and completing message, and sending second to micro-base station holds
It carries and establishes response, to complete the foundation of the DRB between micro-base station and user terminal.
Wherein, first configuration information and the second configuration information include：Evolved packet system EPS load identifications, DRB
Mark, wireless spread-spectrum technology RLC configurations, Logic Channel Identifier and logic channel configuration.
Wherein, second configuration information further includes：Micro-base station identifies.
Wherein, when the micro-base station is configured according to first configuration information, if the DRB marks in instruction are established in carrying
It is occupied to know corresponding DRB, then occupied DRB is not configured by the micro-base station；Response is established in first carrying
Include：The DRB identification informations not being configured.
Wherein, the macro base station is additionally operable to judge whether that triggering micro-base station is needed to establish DRB.
Wherein, request is established in the carrying that the macro base station is additionally operable to receive transmitted by mobility management entity MME；
The macro base station is additionally operable to send carrying foundation response to the MME.
Wherein, the macro base station is according at least the one of own situation, user terminal measurement reported result and micro-base station situation
Kind is to determine whether need triggering micro-base station to establish DRB, the own situation includes：Own load, quality of service and channel matter
Amount, the micro-base station situation include：Micro-base station load, quality of service and channel quality.
（Three）Advantageous effect
The problem of present invention is solved in the dual link network using 3C frameworks, and DRB is established between SeNB and UE is centainly being touched
Under the conditions of hair, MeNB can initiate the process of establishing of DRB between SeNB and UE, and whether and when MeNB, which carries out EPS carryings, shunted
Journey does not influence the processing of core net, reduces the change to existing system to the maximum extent, and implementation method is simple, fully profit
With the advantage of doubly-linked connection technology, the regular traffic transmission of user ensure that.
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 diagram of the method for establishing wireless load-bearing in the dual link network of one embodiment of the present invention；
Fig. 5 is the flow chart of the method for establishing wireless load-bearing in the dual link network of the first embodiment of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but be not limited to the scope of the present invention.
Fig. 4 is the flow diagram of the method for establishing wireless load-bearing in the dual link network of one embodiment of the present invention；Ginseng
According to Fig. 4, the described method comprises the following steps：
S1：Macro base station sends carrying to micro-base station and establishes instruction, and the carrying is established instruction and included：First configuration information；
S2：After the micro-base station receives the carrying foundation instruction, it is configured, is matched according to first configuration information
After the completion of putting, response is established to the first carrying of macro base station feedback；
S3：The macro base station sends wireless heterogeneous networks to user terminal（RRC）Connection reconfiguration message, the RRC connections
Reallocation message includes：Second configuration information；
S4：After the user terminal receives the RRC connection reconfigurations message, matched according to second configuration information
It puts, after the completion of configuration, message is completed to macro base station feedback RRC connection reconfigurations；
S5：The macro base station sends the second carrying after receiving the RRC connection reconfigurations and completing message, to micro-base station and builds
Vertical response, to complete the foundation of the DRB between micro-base station and user terminal.
It is configured for ease of realizing, it is preferable that first configuration information and the second configuration information include：Evolution grouping system
System EPS load identifications, DRB marks, wireless spread-spectrum technology RLC configurations, Logic Channel Identifier and logic channel configuration etc..
Since all information of UE are as transmitted by macro base station, closed between UE and micro-base station for the ease of distinguishing for adjusting
The information of system, it is preferable that second configuration information further includes：Micro-base station identifies.
To prevent the occupied situations of DRB from occurring, meanwhile, in order to ensure that macro base station is consistent with the information of micro-base station, preferably
Ground, in step S2, when being configured according to first configuration information, if to establish DRB marks in instruction corresponding for carrying
DRB is occupied, then occupied DRB is not configured by the micro-base station；First carrying is established response and is included：Not by
The DRB identification informations of configuration.
In present embodiment, by macro base station to determine whether triggering micro-base station establishes DRB, it is preferable that before step S1
It further includes：
S001：The macro base station judges whether that triggering micro-base station is needed to establish DRB, if so, performing step S1.
Newly-established EPS is carried and is triggered by PGW, it is preferable that is further included before step S001：
S000：Request is established in the carrying that the macro base station receives transmitted by mobility management entity MME；
It is further included after step S5：
S6：The macro base station sends carrying to the MME and establishes response.
To ensure that triggering micro-base station establishes the accuracy of DRB, it is preferable that in step S001, the macro base station is according to itself
At least one of situation, user terminal measurement reported result and micro-base station situation is to determine whether need to trigger micro-base station foundation
DRB, the own situation include：Own load, quality of service and channel quality, the micro-base station situation include：Micro-base station is born
Load, quality of service and channel quality.
In present embodiment, step S1~S2, do not have first with step S3~S5 sequence, can first carry out step S3~
S5, then step S1~S2 is performed, only macro base station receives the first carrying and establishes response and built to the second carrying of micro-base station feedback
After vertical response, the DRB that just calculating realizes between micro-base station and user terminal is established.
The data such as request, message and the response between macro base station and micro-base station in present embodiment pass through the Xn of definition
Interface or X2 interface are transmitted.
Embodiment 1
The present embodiment shunts newly-established EPS carryings, for the situation, with reference to Fig. 5, the method for the present embodiment
Including：
1st, PGW sends carrying to SGW and establishes request；
2nd, SGW sends carrying to MME and establishes request；
3rd, when request is established in the MeNB carryings for receiving MME transmissions, MeNB will be it is first determined whether need to trigger SeNB and UE
Between DRB establish process.
MeNB can be according to factors such as own load, quality of service and channel qualities, and UE measures reported result or with reference to SeNB
The factors such as load, quality of service and channel situation at this time, synthesis account for, and judge whether that triggering SeNB establishes DRB, specific to touch
Clockwork spring part depends on the realization of MeNB.
If the 4th, by judging, meet the trigger condition that SeNB establishes DRB, then MeNB sends carrying to SeNB and establishes instruction,
And the relevant configuration information established in the message comprising carrying, including EPS load identifications, DRB marks, RLC configurations, logic channel
Mark and logic channel configuration etc..
5th, after SeNB receives the carrying foundation instruction of MeNB transmissions, the relevant configuration letter in instruction is established according to the carrying
Breath is configured, and SeNB feeds back carrying foundation response to MeNB after the completion of configuration.
6th, MeNB receive SeNB transmissions carrying establish response after, confirm that SeNB sides have completed carrying and establish relevant parameter to match
Put process.MeNB sends RRC connection reconfiguration message to UE, and the RRC connection reconfigurations message includes the phase that UE and SeNB establishes DRB
Close configuration information（Including EPS load identifications, DRB marks, RLC configurations, Logic Channel Identifier and logic channel configuration etc.）, simultaneously
In the message comprising related instruction information, that be used to indicate that UE establishes at this time is the DRB between SeNB.
7th, UE is indicated according to MeNB after completing relevant configuration, and sending RRC connection reconfigurations to MeNB completes message.
8th, MeNB sends carrying to SeNB and establishes response, feedback UE confirmations are held after receiving RRC connection reconfigurations and completing message
It carries to establish and complete.
9th, SeNB receive MeNB feedbacks carrying establish response after, DRB establishes process between completing SeNB and UE, and MeNB exists
After receiving RRC connection reconfigurations completion message, " response is established in carrying " message is sent to MME, feedback acknowledgment is carried to establish and be completed.
Step 10~13 are identical with the flow of the prior art, and details are not described herein.
Embodiment 2
Established EPS carryings are shunted, for the situation, the method for the present embodiment only needs to perform embodiment
Step 3~8 in 1, but step 3 is different from embodiment 1, and request is established in the carrying without receiving to come transmitted by MME, by MeNB
It actively triggers, the step 3 of the present embodiment includes：MeNB judges whether that the DRB triggered between SeNB and UE is needed to establish process, MeNB
Can be according to factors such as own load, quality of service and channel qualities, UE measures reported result or is loaded at this time with reference to SeNB, business
The factors such as quality and channel situation, synthesis account for, and judge whether that triggering SeNB establishes DRB, concrete trigger condition depends on
The realization of MeNB.
In the present embodiment, SeNB is completed after DRB establishes process, and MeNB is without to core net feedback information, step 9 in Fig. 5
~13 are omitted.Whether and when MeNB, which carries out EPS carrying branching process, does not influence the processing of core net, to the maximum extent
Reduce the change to existing system.
The invention also discloses the radio bearers in a kind of dual link network to establish system, the system comprises：Macro base station,
Micro-base station and user terminal,
Macro base station is used to send carrying foundation instruction to micro-base station, and the carrying is established instruction and included：First configuration information；
After the micro-base station is for receiving the carrying foundation instruction, it is configured according to first configuration information,
After the completion of configuration, response is established to the first carrying of macro base station feedback；
The macro base station is additionally operable to send radio resource control RRC connection reconfiguration message, the RRC connections to user terminal
Reallocation message includes：Second configuration information；
After the user terminal is for receiving the RRC connection reconfigurations message, carried out according to second configuration information
After the completion of configuration, message is completed to macro base station feedback RRC connection reconfigurations for configuration；
The macro base station is additionally operable to after receiving the RRC connection reconfigurations and completing message, and sending second to micro-base station holds
It carries and establishes response, to complete the foundation of the DRB between micro-base station and user terminal.
Preferably, first configuration information and the second configuration information include：Evolved packet system EPS load identifications,
DRB marks, wireless spread-spectrum technology RLC configurations, Logic Channel Identifier and logic channel configuration.
Preferably, second configuration information further includes：Micro-base station identifies.
Preferably, when the micro-base station is configured according to first configuration information, if the DRB in instruction is established in carrying
The corresponding DRB of mark is occupied, then occupied DRB is not configured by the micro-base station；First carrying, which is established, to ring
It should include：The DRB identification informations not being configured.
Preferably, the macro base station is additionally operable to judge whether that triggering micro-base station is needed to establish DRB.
Preferably, request is established in the carrying that the macro base station is additionally operable to receive transmitted by mobility management entity MME；
The macro base station is additionally operable to send carrying foundation response to the MME.
Preferably, the macro base station according to own situation, user terminal measurement reported result and micro-base station situation at least
One kind is to determine whether need triggering micro-base station to establish DRB, the own situation includes：Own load, quality of service and channel
Quality, the micro-base station situation include：Micro-base station load, quality of service and channel quality.
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 without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, 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 (14)
1. the method for establishing wireless load-bearing 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 to micro-base station and establishes instruction, and the carrying is established instruction and included：First configuration information；
S2：After the micro-base station receives the carrying foundation instruction, it is configured, is configured according to first configuration information
Cheng Hou establishes response to the first carrying of macro base station feedback；
S3：The macro base station sends radio resource control RRC connection reconfiguration message to user terminal, and the RRC connection reconfigurations disappear
Breath includes：Second configuration information；
S4：After the user terminal receives the RRC connection reconfigurations message, it is configured according to second configuration information,
After the completion of configuration, message is completed to macro base station feedback RRC connection reconfigurations；
S5：The macro base station sends the second carrying and establishes and ring after receiving the RRC connection reconfigurations and completing message to micro-base station
Should, to complete the foundation of the Data Radio Bearer DRB between micro-base station and user terminal.
2. the method as described in claim 1, which is characterized in that first configuration information and the second configuration information include：
Evolved packet system EPS load identifications, DRB marks, wireless spread-spectrum technology RLC configurations, Logic Channel Identifier and logic channel are matched
It puts.
3. method as claimed in claim 2, which is characterized in that second configuration information further includes：Micro-base station identifies.
4. method as claimed in claim 2, which is characterized in that in step S2, be configured according to first configuration information
When, if the DRB that carrying is established corresponding to the DRB marks in instruction is occupied, it is not configured by the micro-base station occupied
DRB；First carrying is established response and is included：The DRB identification informations not being configured.
5. the method as described in claim 1, which is characterized in that further included before step S1：
S001：The macro base station judges whether that triggering micro-base station is needed to establish DRB, if so, performing step Sl.
6. method as claimed in claim 5, which is characterized in that further included before step S001：
S000：Request is established in the carrying that the macro base station receives transmitted by mobility management entity MME；
It is further included after step S5：
S6：The macro base station sends carrying to the MME and establishes response.
7. method as claimed in claim 5, which is characterized in that in step S001, the macro base station is according to own situation, user
At least one of terminal measurement report result and micro-base station situation establishes DRB to determine whether needing to trigger micro-base station, it is described from
Body situation includes：Own load, quality of service and channel quality, the micro-base station situation include：Micro-base station load, quality of service
And channel quality.
8. the radio bearer in a kind of dual link network establishes system, which is characterized in that the system comprises：Micro-base station, macro base
It stands and user terminal,
Macro base station is used to send carrying foundation instruction to micro-base station, and the carrying is established instruction and included：First configuration information；
After the micro-base station is for receiving the carrying foundation instruction, it is configured, is configured according to first configuration information
After the completion, response is established to the first carrying of macro base station feedback；
The macro base station is additionally operable to send radio resource control RRC connection reconfiguration message, the RRC connection reconfigurations to user terminal
Message includes:Second configuration information；
After the user terminal is for receiving the RRC connection reconfigurations message, it is configured according to second configuration information,
After the completion of configuration, message is completed to macro base station feedback RRC connection reconfigurations；
The macro base station is additionally operable to after receiving the RRC connection reconfigurations and completing message, and sending the second carrying to micro-base station builds
Vertical response, to complete the foundation of the Data Radio Bearer DRB between micro-base station and user terminal.
9. system as claimed in claim 8, which is characterized in that first configuration information and the second configuration information include：
Evolved packet system EPS load identifications, DRB marks, wireless spread-spectrum technology RLC configurations, Logic Channel Identifier and logic channel are matched
It puts.
10. system as claimed in claim 9, which is characterized in that second configuration information further includes：Micro-base station identifies.
11. system as claimed in claim 9, which is characterized in that the micro-base station is matched according to first configuration information
When putting, if the DRB that carrying is established corresponding to the DRB marks in instruction is occupied, it is not configured by the micro-base station occupied
DRB；First carrying is established response and is included:The DRB identification informations not being configured.
12. system as claimed in claim 8, which is characterized in that the macro base station is additionally operable to judge whether to need to trigger micro- base
DRB is established at station.
13. system as claimed in claim 12, which is characterized in that the macro base station is additionally operable to receive mobility management entity
Request is established in carrying transmitted by MME；
The macro base station is additionally operable to send carrying foundation response to the MME.
14. system as claimed in claim 12, which is characterized in that the macro base station is according to own situation, user terminal measurement
At least one of reported result and micro-base station situation is to determine whether need triggering micro-base station to establish DRB, the own situation packet
It includes：Own load, quality of service and channel quality, the micro-base station situation include：Micro-base station load, quality of service and channel matter
Amount.
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| WO2019134114A1 (en) * | 2018-01-05 | 2019-07-11 | Oppo广东移动通信有限公司 | Method for allocating identifier of data bearer, and terminal device and network device |
| CN113784391B (en) * | 2020-06-09 | 2023-08-15 | 中国移动通信集团设计院有限公司 | Self-adaptive data distribution method and device |
| WO2022151104A1 (en) * | 2021-01-13 | 2022-07-21 | 北京小米移动软件有限公司 | Multicast broadcast service data receiving method and apparatus |
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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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