CN110267301A - Terminal capability acquisition methods in a kind of doubly-linked welding system - Google Patents
Terminal capability acquisition methods in a kind of doubly-linked welding system Download PDFInfo
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- CN110267301A CN110267301A CN201910467259.XA CN201910467259A CN110267301A CN 110267301 A CN110267301 A CN 110267301A CN 201910467259 A CN201910467259 A CN 201910467259A CN 110267301 A CN110267301 A CN 110267301A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/22—Performing reselection for specific purposes for handling the traffic
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses terminal capability acquisition methods in a kind of doubly-linked welding system, when user terminal needs to carry out alien frequencies switching in system, whether the first master base station judges target frequency point in the frequency range combination of active user's terminal ability information, if not or do not find target frequency point corresponding frequency range combination ability information yet, obtain ability of user terminal message then to obtain corresponding band combination ability information, by the corresponding frequency range combination ability information of the target frequency point from measurement report or newly obtained, in ability information of user terminal before being attached to, the second master base station is brought in switching request, second master base station is according to whether configuration isosystem measurement or the different system secondary cell of configuration, and reallocation message is sent to the first master base station；User terminal accesses the second master base station by reallocation message and accesses secondary cell, it is established that dual link.This method can be such that target BS quick obtaining combines to frequency range under the premise of not increasing handover delay, and strong operability is realized simple and effective.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to terminal capability acquisition methods in a kind of doubly-linked welding system.
Background technique
With the development of electronic technology, the communication technology of new generation continues to bring out, and for operator, it is based on older generation
The communication equipment wide coverage of the communication technology, communication equipment of new generation need the regular hour that could gradually replace old set
It is standby, therefore the case where can have new used equipment in this process while service being provided.In order to make new used equipment while obtain most
High utilization rate, promotes user's impression, and old equipment is sent out as coating, new equipment as the doubly-linked connection technology of capacity layer
Bright and use.Such as during newest 5G technological evolvement, 3GPP tissue proposes the network architecture of a variety of 4/5G dual links,
Referred to as NonStandAlone networking (NSA networking).NSA networking plan is based on LTE and NR close coupling framework, 3/3A/ therein
3X framework is also referred to as EN-DC framework, is accepted extensively by operator.In the architecture, LTE base station (4G) is used as master base station and net
Network signaling anchor point connects core net by S1 interface, provides the complete network coverage, and the base station NR (5G) is used as prothetic group station, provides height
The data service of speed transmits signaling by LTE base station or SRB3 between user equipment.After terminal accesses in LTE cell,
LTE base station is according to network configuration and terminal traffic situation, the EN-DC ability of terminal and NR nearby region measurement situation decision dual link
It initiates and dual link target NR cell selects.
In dual link networking, the terminal for configuring dual link needs to have simultaneously in LTE network and NR network sending and receiving data
Ability, therefore the LTE base station as master base station need to obtain terminal support LTE frequency range and NR frequency range dual link combination, with
Just it decides whether that NR supplementary cell can be configured to terminal and configures the NR supplementary cell of which frequency range to terminal.Due to terminal
All LTE frequency ranges and NR the frequency range combination supported may be more, if it is primary all obtain up channel can be caused it is larger
Impact influences network performance and user's impression, therefore 3GPP agreement defines LTE base station and obtains message in terminal capability
(UECapabilityEnquiry) the LTE frequency range and NR frequency range for needing to inquire are carried in, terminal only obtains terminal capability after receiving
It takes the groups of frequency bands cooperation in message to judge, is carried eventually in terminal capability response message (UECapabilityInformation)
End ability obtains the LTE frequency range in message and all LTE frequency ranges and NR groups of frequency bands of all combinations of NR frequency range and the support of this terminal
The intersection of conjunction, LTE base station save the terminal ability information received.That is, the terminal end that base station obtains when accessing network
Ability groups of frequency bands conjunction in end is not the complete or collected works of terminal capability frequency range combination.
When between LTE base station inter-frequency handoff occurs for terminal, provide that the source LTE base station of switching can according to 3GPP agreement
Terminal capability to be brought to target LTE base station in switching request.But since the groups of frequency bands conjunction in ability information is not end
End support frequency range combine complete or collected works, switching request carry terminal capability in may not include target LTE cell and it
The frequency range of auxiliary NR cell combines.Target LTE base station can not judge whether that this is auxiliary small to terminal configuration NR by terminal capability at this time
Area.
Summary of the invention
For above-mentioned problems of the prior art, the object of the present invention is to provide terminal energy in a kind of doubly-linked welding system
Power acquisition methods can be such that target BS quick obtaining combines to frequency range under the premise of not increasing handover delay.
In order to realize above-mentioned task, the invention adopts the following technical scheme:
Terminal capability acquisition methods in a kind of doubly-linked welding system, the doubly-linked welding system include the first master base station, second
Master base station and user terminal；The method the following steps are included:
Step 1, the transmission of the first master base station is received when accessing user terminal to network needs to report dual link frequency range to combine
Ability of user terminal query messages, it is local to save master network frequency band list therein；
Step 2, when user terminal is reported for ambulant A3/A4/A5 measurement report, if judgement measurement report is related to
Alien frequencies frequency point not in previously stored master network frequency band list, then the subsidiary ability information of user terminal in measurement report,
The ability information of user terminal includes but is not limited to frequency range where the corresponding alien frequencies frequency point of the measurement report that user terminal is supported
Ability information is combined with all auxiliary network frequency ranges；
Step 3, the first master base station receives the measurement report of user terminal, and judgement such as needs to carry out alien frequencies in system and switches,
Then judge target frequency point whether in the frequency range combination of active user's terminal ability information；If it was not then from measurement report
Find the corresponding frequency range combination ability information of target frequency point；If not finding the corresponding frequency of target frequency point in measurement report yet
Section combination ability information then initiates the ability of user terminal combined for the frequency range with the corresponding auxiliary network frequency range of Target cell immediately
Query process obtains ability of user terminal message, to obtain corresponding frequency range combination ability information；
Step 4, the first master base station by the target got from measurement report or new ability of user terminal message frequency
The corresponding frequency range of point combines ability information, in the ability information of user terminal before being attached to, then by new user terminal energy
Force information brings the second master base station in switching request；
Second master base station receives switching request, according to ability information of user terminal in switching request and therein major-minor
Frequency range combined information judges whether to need to increase secondary cell and configures isosystem measurement or direct basis to user terminal
Major-minor frequency range combined information is the different system secondary cell with covering to user terminal configuring adjacent cell relationship, and by all generations
Measurement and secondary cell configuration generate reallocation message code stream, and the first master base station is brought in handoff response；Here switching include but
It is not limited to S1 and X2 switching；
Step 5, the first master base station receives handoff response, and reallocation message therein is sent to user terminal, user terminal
The second master base station is accessed, is directly accessed secondary cell according to the configuration of the second master base station, it is established that dual link continues big flow business,
Or report secondary cell to correspond to measurement report according to measuring configuration, dual link is set up, rapidly to carry out big flow business.
The present invention has following technical characterstic compared with prior art:
1. the method for the present invention can be such that target BS quick obtaining combines to frequency range；
2. process of the invention influences existing switching flow less, not will increase handover delay；
3. strong operability of the present invention is realized simple and effective；
4. the present invention takes full advantage of existing procedure, handover-target base station is enable to configure supplementary cell rapidly, reduced
The handoff time delay of business in secondary cell promotes user's impression.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of EN-DC dual link networking；
Fig. 2 is the overall flow schematic diagram of the method for the present invention；
Fig. 3 is the network architecture figure in the embodiment of the present invention 1；
Fig. 4 is the flow diagram of the embodiment of the present invention 1.
Specific embodiment
Doubly-linked welding system described in this programme includes master base station (the first master base station), target master base station (the second master base station)
And user terminal.
Embodiment 1
Network architecture explanation: dual link is supported as LTE master base station in base station 1, and serving cell 2 therein services frequency point and belongs to
Frequency range 3, there is alien frequencies adjacent area 4, and the service frequency point of the adjacent area belongs to frequency range 5；There are also be used as different system reserve secondary cell for serving cell 2
The adjacent area NR 6, service frequency point belong to frequency range 7；Cell 4 has an alien frequencies adjacent area 8, and service frequency point belongs to frequency range 9, and has
With the identical adjacent area NR 6 of cell 2；Cell 8 has the area NR 10 as different system reserve secondary cell, and service frequency point belongs to frequency range
11；Terminal A supports the combination of all EN-DC dual links of LTE frequency range 3,5,9 and NR frequency range 7,11.The architecture diagram of the present embodiment is shown in
Attached drawing 3.
The flow chart of the present embodiment is shown in attached drawing 4, and process is as follows:
1. terminal A is switched on, access service cell 2, cell 2 is given according to the frequency range and adjacent area frequency range of this cell in access procedure
The Eutra-nr capability query message of terminal transmission band frequency range 3,5,7, the primary band 3 of terminal A preservation inquiry, 5, and reply band 3/
7 combinations and 5/7 combined terminal ability information message.
2. terminal ability information configuration alien frequencies A3 measurement event and different system B1 that serving cell 2 is replied according to terminal A are surveyed
Amount event, terminal receive the signal of NR cell 6 and judge that signal strength reaches B1 event criteria, report to serving cell 2 with small
The B1 event measurement report of 6 information of area.
3. serving cell 2 receives B1 event measurement report, secondary cell is configured with to terminal A according to the service conditions of terminal A
6, terminal A sets up dual link.
4. terminal A sends the alien frequencies A3 measurement event of cell 4 to cell 2 in moving process, and judges 4 place of cell
Frequency range 5 does not carry the corresponding dual link ability of frequency range 5 in local preservation.
5. 2 instruction terminal A of serving cell is switched to cell 4, cell 4 is according to adjacent area frequency range to the A3 of terminal configuration frequency range 9
Measurement.Simultaneously terminal A dual link secondary cell is constant or cell 6.
6. terminal A detects that the signal of cell 8 in frequency range 9 meets A3 measurement standard, the A3 with cell 8 is sent to cell 4
Measurement report, while judging not include frequency range 9 in the frequency band list locally saved, therefore the subsidiary frequency range combination in measurement report
9/7,9/11 terminal ability information.
7. cell 4 receives A3 event, the alien frequencies X2 switching of initiating terminal A to cell 8, and carries frequency in switching request
The terminal ability information of Duan Zuhe 9/7,9/11.
8. cell 8 receives switching request, judge that terminal band support 9/11 combines, covers adjacent area according to this cell and NR are same
10 neighbouring relations and local dual link strategy, the dual link for being 10 directly to terminal A configuration secondary cell, terminal 10 is switched to small
Area 8, while secondary cell is switched to cell 10, the business in secondary cell continues, and user does not experience service disruption.
Embodiment 2
Network architecture explanation: dual link is supported as LTE master base station in base station 1, and serving cell 2 therein services frequency point and belongs to
Frequency range 3, there is alien frequencies adjacent area 4, and the service frequency point of the adjacent area belongs to frequency range 5；There are also be used as different system reserve secondary cell for serving cell 2
The adjacent area NR 6, service frequency point belong to frequency range 7；Cell 4 has an alien frequencies adjacent area 8, and service frequency point belongs to frequency range 9, and has
With the identical adjacent area NR 6 of cell 2；The corresponding auxiliary NR frequency range 12,13 in alien frequencies adjacent area 8 is configured or got in cell 4；Cell 8 has
As the area NR 10 and 11 of different system reserve secondary cell, their service frequency point is belonging respectively to frequency range 12 and 13；Terminal A is supported
The combination of all EN-DC dual links of LTE frequency range 3,5,9 and NR frequency range 7,12,13.
The process of the present embodiment is as follows:
1. terminal A is switched on, access service cell 2, cell 2 is given according to the frequency range and adjacent area frequency range of this cell in access procedure
Terminal sends the Eutra-nr capability query message of band frequency range 3,5,7, and terminal A does not support this programme content, do not keep frequency range 3,5
Information replys the combination of band 3/7 and 5/7 combined terminal ability information message.
2. terminal ability information configuration alien frequencies A3 measurement event and different system B1 that serving cell 2 is replied according to terminal A are surveyed
Amount event；Terminal receives the signal of NR cell 6 and judges that signal strength reaches B1 event criteria, reports to serving cell 2 with small
The B1 event measurement report of 6 information of area.
3. serving cell 2 receives B1 event measurement report, secondary cell is configured with to terminal A according to the service conditions of terminal A
6, terminal A sets up dual link.
4. terminal A sends the alien frequencies A3 measurement event of cell 4 to cell 2,2 instruction terminal of serving cell in moving process
A is switched to cell 4, and A3 of the cell 4 according to adjacent area frequency range to terminal configuration frequency range 9 is measured.The dual link secondary cell of terminal A simultaneously
Constant or cell 6.
5. terminal A detects that the signal of cell 8 in frequency range 9 meets A3 measurement standard, the A3 with cell 8 is sent to cell 4
Measurement report, simultaneously because not supporting the content in this programme, not in measurement report, subsidiary frequency range combines for 9/7,9/11 end
Hold ability information.
6. cell 4 receives A3 event, decision needs initiating terminal A to switch to the alien frequencies X2 of cell 8, and judges at present
The EN-DC frequency range combination ability information for not carrying 8 place frequency range 9 of cell in terminal capability, believes according to the auxiliary NR frequency range of adjacent area 8
Breath sends band frequency range 9/12,9/13 combined terminal capability query messages to terminal A.
7. terminal A replys band frequency range 9/12,9/13 combined terminal capability message, 4 place base station of cell is to where cell 8
Base station sends switching request, and the terminal ability information of frequency range combination 9/12,9/13 is carried in switching request.
8. cell 8 receives switching request, judge that terminal band support 9/12 combines, covers adjacent area according to this cell and NR are same
10,11 neighbouring relations and local dual link strategy, the B1 that terminal A configuration frequency range 12 and 13 is carried in handoff response are surveyed
Amount.
9. cell 4 sends the switching command that the B1 with frequency range 12 and 13 is measured to terminal, terminal 10 is switched to cell 8, and
The B1 measurement report of the adjacent area NR 10 is reported, cell 8 configures the secondary cell that NR cell 10 is terminal A, continues in secondary cell
High flow capacity business, user do not experience service disruption, only experience slight traffic delay.
Claims (1)
1. terminal capability acquisition methods in a kind of doubly-linked welding system, which is characterized in that the doubly-linked welding system includes first main
Base station, the second master base station and user terminal；The method the following steps are included:
Step 1, the use for needing to report dual link frequency range to combine of the first master base station transmission is received when accessing user terminal to network
Family terminal capability query messages, it is local to save master network frequency band list therein；
Step 2, when user terminal reporting measurement reports, if the alien frequencies frequency point that judgement measurement report is related to is not previously stored
In master network frequency band list, then the subsidiary ability information of user terminal in measurement report, the ability information of user terminal include but
Frequency range and all auxiliary network frequency range combination abilities where being not limited to the corresponding alien frequencies frequency point of the measurement report of user terminal support
Information；
Step 3, the first master base station receives the measurement report of user terminal, and judgement such as needs to carry out alien frequencies in system and switches, then sentences
Whether disconnected target frequency point is in the frequency range combination of active user's terminal ability information；If it was not then being found from measurement report
The corresponding frequency range of target frequency point combines ability information；If not finding the corresponding groups of frequency bands of target frequency point in measurement report yet
Ability information is closed, then initiates the ability of user terminal inquiry combined for the frequency range with the corresponding auxiliary network frequency range of Target cell immediately
Process obtains ability of user terminal message, to obtain corresponding frequency range combination ability information；
Step 4, the target frequency point pair that the first master base station will be got from measurement report or new ability of user terminal message
The frequency range combination ability information answered, in the ability information of user terminal before being attached to, then believes new ability of user terminal
Breath brings the second master base station in switching request；
Second master base station receives switching request, according to the ability information of user terminal and major-minor frequency range therein in switching request
Combined information judges whether to need to increase secondary cell and configures isosystem measurement to user terminal, or directly according to major-minor
Frequency range combined information is the different system secondary cell with covering to user terminal configuring adjacent cell relationship, and by the measurement of all generations
It is configured with secondary cell and generates reallocation message code stream, the first master base station is brought in handoff response；
Step 5, the first master base station receives handoff response, and reallocation message therein is sent to user terminal, user terminal access
Second master base station is directly accessed secondary cell according to the configuration of the second master base station, it is established that and dual link continues big flow business, or
It reports secondary cell to correspond to measurement report according to measuring configuration, sets up dual link rapidly, to carry out big flow business.
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| CN201910467259.XA CN110267301B (en) | 2019-05-31 | 2019-05-31 | Method for acquiring terminal capability in dual-connection system |
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