CN104080101B - A kind of LTE system carrier wave aggregated service community selection method - Google Patents
A kind of LTE system carrier wave aggregated service community selection method Download PDFInfo
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- CN104080101B CN104080101B CN201410343400.2A CN201410343400A CN104080101B CN 104080101 B CN104080101 B CN 104080101B CN 201410343400 A CN201410343400 A CN 201410343400A CN 104080101 B CN104080101 B CN 104080101B
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Abstract
A kind of LTE system carrier wave aggregated service community selection method, including：Step 1, network side is according to the corresponding serving cell group information of terminal, and base band dispatch processor part is allocated in conjunction with the terminal configuration services cell for having carrier aggregation capacity, while by all service cell informations of terminal；Step 2, network side is that terminal eats dishes without rice or wine to measure the signal covering quality for reporting these serving cells so as to terminal for the configuration of each serving cell；Step 3, each serving cell signal covering quality information that network side is reported according to terminal, judge whether this serving cell cannot function as the activation alternative cell of this terminal, it will determine that result notice base band dispatch processor part, base band dispatch processor are handled respective service cell into line activating or deactivation according to this result.The present invention had not only saved the quantity of space interface signaling transmission, but also can select serving cell according to the information that terminal reports come effective, improved system effectiveness.
Description
Technical field
The invention belongs to the communications fields, are related to a kind of long term evolution (LTE, Long Term Evolution) system carrier
Aggregated service community selection method.
Background technology
In order to provide higher data rate, advanced long evolving system to mobile subscriber（LTE-A,Long Term
Evolution Advance）Propose multi-carrier polymerizing（CA, Carrier Aggregation）Concept, i.e., will be same
Multiple carrier waves of a frequency range or different frequency range condense together, and a user is supplied to use, so that the user has bigger
Available bandwidth, to improve the data rate of the user.
In LTE system, 3GPP agreements regulation, the maximum bandwidth that system is supported is 20MHZ；And in lte-a system, it adopts
With multi-carrier polymerizing technology, system can support maximum 5 member carriers, the i.e. system bandwidth of 20Mhz × 5=100Mhz, manage in this way
By above can system data rates being improved 5 times compared with LTE system.
System complexity has also been introduced while improving user rate in multi-carrier polymerizing technology.Supporting multicarrier poly-
The terminal of conjunction technology can be supported to use more than one carrier wave, therefore how select serving cell（Member carrier）As one
How a problem selects serving cell（Member carrier）, need to take into account system effectiveness and reduce network side to the greatest extent（Base station）With end
The signaling at end is exchanged to reduce the signaling traffic on network and save terminal power consumption amount simultaneously.
Referring to Fig. 1, carrier wave aggregated service community configuration mode in the prior art is as follows：
After base station access by terminal, the mobile management entity of base station issues quality for alternative secondary cell and eats dishes without rice or wine to measure, base station
The respective secondary cell measurement quality results that mobile management entity is fed back according to terminal, carry out the addition or deletion of secondary cell.Tool
Body, if " cell signal covering quality is good for terminal feedback（Higher than certain thresholding）" measurement result, then the moving tube of base station
The cell is added to secondary cell by reason entity triggers secondary cell addition flow, and notifies base station dispatch processor, while passing through RRC
It signals terminal and the cell is added to carrier wave polymerization secondary cell, terminal passes through RRC signaling after successfully completing cell addition
It feeds back base station and adds success response.If " cell signal covering quality is poor for terminal feedback（Less than certain thresholding）" measurement knot
Fruit, then the mobile management entity triggering secondary cell of base station deletes flow and deletes the secondary cell, and notifies base station dispatch processor,
Notify the cell polymerize from carrier wave in secondary cell list by terminal to delete by RRC signaling simultaneously, terminal is successfully completing cell
After addition, base station is fed back by RRC signaling and deletes success response.
The description as described in multi-carrier polymerizing only defines terminal and needs to select when realizing multi-carrier polymerizing in 3GPP agreements
Select serving cell；But there is no the specific standards methods of regulation serving cell selection, these depend on each equipment vendors oneself
To realize.
Invention content
Invention defines a kind of service of long term evolution (LTE, Long Term Evolution) system carrier aggregation is small
The method of area's management and the wireless base station device using this method.
Technical scheme of the present invention provides a kind of LTE system carrier wave aggregated service community selection method, is based on network side group
The mobile management entity and base band dispatch processor stood execute following steps,
Step 1, the mobile management entity of network side is poly- in conjunction with having carrier wave according to the corresponding serving cell group information of terminal
The terminal configuration services cell of conjunction ability, while all service cell informations of terminal are allocated to base band dispatch processor；
Step 2, the mobile management entity of network side is that terminal eats dishes without rice or wine to measure so as to terminal for the configuration of each serving cell
Report the signal covering quality of these serving cells；
Step 3, each serving cell signal covering quality information phase that the mobile management entity of network side is reported according to terminal
The event answered, judges whether this serving cell can will determine that result notice base band is dispatched as the activation alternative cell of this terminal
Processor, base band dispatch processor are handled respective service cell into line activating or deactivation according to this result.
Moreover, when according to doing opening base station configuration, for the static configuration serving cell of each serving cell of the base station
Aggregate list, when terminal accesses certain serving cell, terminal according to the aggregate list of respective service cell obtain it is corresponding service it is small
District's groups information.
Moreover, in step 2, RSRP/RSRQ thresholdings are measured between leaving central area and close to fringe region by setting
Between, terminal reports the event of poor signal quality when more than this thresholding, and terminal reports signal quality good when less than this thresholding
Event.
Moreover, setting thresholding to a section, upper limit value and lower limiting value are provided；
It is less than this thresholding, the event that terminal reports signal quality good below or equal to lower limiting value；
It is more than this thresholding greater than upper limit value, terminal reports the event of poor signal quality.
Moreover, in step 3, the corresponding event of mobile management entity basis signal covering quality information determines that serving cell is
It is no to be used as activation alternative cell, if what is reported is the event of serving cell signal quality difference, then it is assumed that this serving cell
Activation alternative cell is cannot function as, if what is reported is the good event of serving cell signal quality, then it is assumed that this serving cell energy
It is enough to be used as activation alternative cell；
After mobile management entity will determine that result notice base band dispatch processor,
When judging result is that can be used as activation alternative cell, base band dispatch processor that this serving cell is arranged to corresponding end
Member in the activation alternative cell list at end, it is found that when this terminating traffic is more than certain thresholding, from activation alternative cell list
Middle one or several serving cells of selection provide carrier wave aggregated service into line activating, thus terminal；
When judging result is that cannot function as activation alternative cell, base band dispatch processor is deleted from activation alternative cell list
Except this serving cell, notice terminal deactivates this serving cell.
General principles are to report the static configuration method of prior static configuration serving cell with according to terminal
The dynamic activation method of information combines, to carry out serving cell（Member carrier）Selection；In this way, both saving
The quantity of space interface signaling transmission, and effectively can select serving cell according to the information that terminal reports（Member carrier）, improve
System effectiveness.The prior art is compared, the present invention, which largely alleviates frequently to re-match serving cell and correspond to eat dishes without rice or wine to measure, to be matched
The pressure of eating dishes without rice or wine to main serving cell is set, system complexity is reduced.
Description of the drawings
Fig. 1 is the carrier wave aggregated service community configuration schematic diagram of the prior art.
Fig. 2 is the carrier wave aggregated service community configuration schematic diagram of the embodiment of the present invention.
Specific implementation mode
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
The realization of the present invention relates generally to network side（Base station）Interior mobile management entity and base band dispatch processor.Scheming
It is frequent to increase and delete serving cell in 1, it needs to notify terminal by RRC signaling；And in fig. 2, the present invention is static in advance
Serving cell is configured, activation alternative cell is dynamically adjusted according to measurement report, and adjusting activation this process of alternative cell is
RRC signaling is not needed frequently to notify terminal.
Referring to Fig. 2, the mobile management entity of network side is mainly responsible for corresponding according to cell where terminal capability and terminal
Aggregated service community group configures serving cell list, while the covering quality according to terminal for these serving cells eats dishes without rice or wine to measure
Information is reported to determine which serving cell can be used as activation serving cell or not can be used as activation serving cell；Base band dispatch deal
It the serving cell list of device part Main Basiss mobile management entity configuration and provides the no activation serving cell that can be used as and believes
Breath determines to activate which serving cell or deactivates which serving cell in conjunction with terminating traffic.
In embodiment, according to channel circumstance where terminal, in conjunction with service traffic demand, rationally swash for terminal user's selection
Living or deactivation serving cell.Realization method is as follows：
Step 1, the mobile management entity of network side is poly- in conjunction with having carrier wave according to the corresponding serving cell group information of terminal
The terminal configuration services cell of conjunction ability, while all serving cell group informations of terminal are allocated to base band dispatch processor portion
Point.
Can when doing opening base station configuration, for the aggregate list of the static configuration serving cell of each cell of the base station,
I.e. each cell configures same aggregate list；When the terminal for having multi-carrier polymerizing ability accesses any cell of the base station
When, according to the aggregate list of configuration terminal configuration services cell thus, i.e., according to respective service cell when terminal accesses certain cell
Aggregate list obtain corresponding serving cell group information, as Fig. 2 adds all secondary cells in base station access by terminal.According to quiet
The serving cell group of state configuration is that terminal user configures serving cell list, it is therefore an objective to caused by avoiding serving cell dynamic from changing
Space interface signaling expense.
Step 2, the mobile management entity of network side is that terminal eats dishes without rice or wine to measure for the configuration of each serving cell.
The mobile management entity of base station system issues the measuring configuration of eating dishes without rice or wine of each configuration serving cell to terminal, i.e., such as Fig. 2
Covering instruction is issued for corresponding secondary cell to eat dishes without rice or wine to measure.It can pre-set and measure RSRP/RSRQ（Cell signal strength/cell
Signal quality, optional one or combination）Thresholding is between the central area for leaving respective service cell and close to marginal zone
Between domain, think that covering quality cannot meet the requirement of serving cell more than this thresholding, terminal reports poor signal quality
Event gives access cell, is less than this thresholding（Anti- table tennis offset can be arranged in this thresholding）Think that covering quality can meet
The requirement of serving cell, the event that terminal reports signal quality good give access cell.Anti- table tennis offset can be arranged in this thresholding,
It sets thresholding to a small section, upper limit value and lower limiting value is provided, to avoid terminal from frequently being cut in thresholding critical point
It changes.It is less than this thresholding, the event that terminal reports signal quality good below or equal to lower limiting value；Greater than the upper limit
Value is more than this thresholding, and terminal reports the event of poor signal quality.Those skilled in the art can advance sets itself thresholding
Value.
Step 3, each serving cell signal covering quality information that the mobile management entity of network side is reported according to terminal, certainly
Whether this fixed serving cell can be used as serving cell terminal service thus, by this result notice base band dispatch processor part, with
Just base band dispatch processor is handled respective service cell into line activating or deactivation according to this result.
Base station movement management entity determines that serving cell whether may be used according to the serving cell signal quality event that terminal reports
Using as activation cell terminal service thus, if the serving cell signal quality assignment part reported, then it is assumed that this cell cannot
Terminal service thus can deactivate this serving cell, if the serving cell signal quality good thing part reported, then it is assumed that this is small
It area can terminal service thus.Base station movement management entity dispatches the judgement result notice base band of the event reported according to terminal
Processor part, when judge result thus cell can terminal service thus when, can be further by base band dispatch processor part
Decide whether to activate this serving cell according to portfolio, if portfolio is big, this serving cell can be activated to carry out business
Transmission.
For each terminal there are one corresponding activation alternative cell list, activation alternative cell list is aggregate list configuration
Serving cell group a subset；Base station selects one or more cell into line activating from activation alternative cell list,
After terminal receives the activation signaling that base station issues, knows which cell can provide carrier wave aggregated service, constitute serving cell
List.When needing to deactivate certain cell, base station is activated from terminal in alternate list and deletes the cell accordingly, passes through simultaneously
It signals terminal and also deactivates the cell, that is, be directed in the serving cell list of a certain terminal, by the cell from service state,
State to be serviced is converted to, the activation to the serving cell is removed.
Embodiment is implemented as follows：
The mobile management entity of the access cell corresponding base station of terminal is small according to the service that measurement result selection can polymerize
Area, and using qualified cell as activation alternative cell and using be unsatisfactory for covering require cell it is small as that can not service
Area, by the mobile management entity notice base band dispatch processor part of base station.
When judging result is that activation alternative cell, the base band dispatch processor of base station can be used as to receive the service that can polymerize
Cell information, this cell, which is arranged to the terminal-pair, stress live member in the list of alternative cell, it is found that this terminating traffic is more than
When certain thresholding, selects one or several cells into line activating from the activation alternative cell list corresponding to the terminal, be
This terminal provides carrier wave aggregated service；
When judging result be cannot function as activation alternative cell, the base band dispatch processor of base station receive can not service it is small
Area's information activates from terminal in alternate list and deletes the cell accordingly, this is deactivated by dispatching the proprietary terminal that signals
Serving cell makes this serving cell not terminal service thus.
For example, for the serving cell signal quality good thing part reported, the measurement result reported shows that serving cell can carry
For preferably covering to get the good measurement result of cell signal covering quality has been arrived, specific processing is as follows：
a）The service that the mobile management entity of the access cell corresponding base station of terminal selects to polymerize according to measurement result
Cell, and using qualified cell as activation alternative cell, i.e., be activation alternative cell as this secondary cell is arranged in Fig. 2, if
It sets in this secondary cell to activation alternative cell list；
b）When the base band dispatch processor of base station finds that this terminating traffic is more than certain thresholding, from selection in step a)
Activation alternative cell in select one or several cells into line activating, terminal provides carrier wave aggregated service thus.
For the serving cell signal quality assignment part reported, the measurement result reported show serving cell cannot provide compared with
Good covering, likewise, referring to Fig. 2, notifies base band dispatch processor to get cell signal covering quality level difference measurements have been arrived
This cell is subjected to deactivation processing, making this serving cell, terminal does not provide service thus.When the base band dispatch processor of base station
When receiving the cell information that can not be serviced, is activated accordingly in alternate list from terminal and delete the cell, while scheduling can be passed through
The proprietary terminal that signals deactivates this serving cell, makes this serving cell not terminal service thus.
Examples detailed above is the preferable embodiment of the present invention, but embodiments of the present invention are not limited by above-described embodiment
System, under other any Spirit Essences for not violating the present invention and principle made by changes, modifications, substitutions, combinations, simplifications should all
For equivalent substitute mode, it is included within the scope of the present invention.
Claims (4)
1. a kind of LTE system carrier wave aggregated service community selection method, it is characterised in that：Advance static configuration serving cell, root
According to measurement report dynamic adjustment activation alternative cell, and adjusts the when of activating alternative cell and do not need RRC signaling frequently to notify
Terminal；Realization process is the mobile management entity based on network side base station and base band dispatch processor, executes following steps,
Step 1, the mobile management entity of network side polymerize energy according to the corresponding serving cell group information of terminal in conjunction with having carrier wave
The terminal configuration services cell of power, while all service cell informations of terminal are allocated to base band dispatch processor；Configuration side
Formula is as follows,
When doing opening base station configuration, for the aggregate list of the static configuration serving cell of each cell of the base station, including it is every
A cell configures same aggregate list；When the terminal for having multi-carrier polymerizing ability accesses any cell of the base station,
According to the aggregate list of configuration terminal configuration services cell thus, realize when terminal accesses certain cell according to respective service cell
Aggregate list obtains corresponding serving cell group information；Serving cell group according to static configuration is that terminal user's configuration service is small
Area's list, space interface signaling expense caused by avoiding serving cell dynamic from changing；
Step 2, the mobile management entity of network side is that terminal eats dishes without rice or wine to measure so that terminal reports for the configuration of each serving cell
The signal covering quality of these serving cells；
Step 3, each serving cell signal covering quality information that the mobile management entity of network side is reported according to terminal is corresponding
Event, judges whether this serving cell can will determine that result notice base band dispatch deal as the activation alternative cell of this terminal
Device, base band dispatch processor are handled respective service cell into line activating or deactivation according to this result.
2. LTE system carrier wave aggregated service community selection method according to claim 1, it is characterised in that：In step 2, lead to
It crosses setting and measures RSRP/RSRQ thresholdings between leaving central area and close between fringe region, terminal when being more than this thresholding
The event for reporting signal quality good, terminal reports the event of poor signal quality when less than this thresholding.
3. LTE system carrier wave aggregated service community selection method according to claim 2, it is characterised in that：Thresholding is arranged
For a section, upper limit value and lower limiting value are provided；
It is less than this thresholding below or equal to lower limiting value, terminal reports the event of poor signal quality；
It is more than this thresholding, the event that terminal reports signal quality good greater than upper limit value.
4. according to LTE system carrier wave aggregated service community selection method described in Claims 2 or 3, it is characterised in that：In step 3,
The corresponding event of mobile management entity basis signal covering quality information determines whether serving cell can be used as activation alternative small
Area, if what is reported is the event of serving cell signal quality difference, then it is assumed that this serving cell cannot function as activation alternative cell,
If what is reported is the good event of serving cell signal quality, then it is assumed that this serving cell can be used as activation alternative cell；
After mobile management entity will determine that result notice base band dispatch processor,
When judging result is that can be used as activation alternative cell, base band dispatch processor that this serving cell is arranged to corresponding terminal
Member in the list of alternative cell is activated, it is found that when this terminating traffic is more than certain thresholding, is selected from activation alternative cell list
One or several serving cells are selected into line activating, terminal provides carrier wave aggregated service thus；
When judging result is that cannot function as activation alternative cell, base band dispatch processor deletes this from activation alternative cell list
Serving cell, notice terminal deactivate this serving cell.
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| CN109068380B (en) * | 2015-11-28 | 2021-07-09 | Oppo广东移动通信有限公司 | Carrier aggregation function control method for communication terminal, communication terminal and medium product |
| KR102420247B1 (en) * | 2015-12-10 | 2022-07-14 | 삼성전자주식회사 | Method and apparatus for transmitting and receiving measurement report in wireless communication system for using carrier aggregation technique |
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| CN102387508A (en) * | 2011-11-01 | 2012-03-21 | 中兴通讯股份有限公司 | Method and device for gathering carrier wave in LTE-A system |
| CN103037432A (en) * | 2011-09-30 | 2013-04-10 | 中兴通讯股份有限公司 | Method and device for controlling carrier aggregation functions |
| CN103096368A (en) * | 2011-11-04 | 2013-05-08 | 中国移动通信集团公司 | Channel state information (CSI) measuring trigger method, terminal, base station and system |
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Patent Citations (4)
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| CN101932045A (en) * | 2009-06-24 | 2010-12-29 | 中兴通讯股份有限公司 | Reporting method for measurement result in carrier aggregation and user equipment |
| CN103037432A (en) * | 2011-09-30 | 2013-04-10 | 中兴通讯股份有限公司 | Method and device for controlling carrier aggregation functions |
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Address after: 430074, No. 88, postal academy road, Hongshan District, Hubei, Wuhan Patentee after: Wuhan post and Telecommunications Science Research Institute Co., Ltd. Address before: 430074, No. 88, postal academy road, Hongshan District, Hubei, Wuhan Patentee before: Wuhan Inst. of Post & Telecom Science |