CN101836477B - Cell type informing method and system based on LTE system - Google Patents
Cell type informing method and system based on LTE system Download PDFInfo
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Abstract
The invention discloses a cell type informing method and system based on Long Term Evolution LTE system. The method comprises that: a first base station sends an X2 building request message to a second base station, wherein the X2 building request message carries service cell information of one or more service cells of the first base station, and the service cell information contains cell type information; the second base station receives the X2 building request message and saves the service cell information carrying by the X2 building request message. Acording to the invention, the maintenance information of the adjacent cell list is more comprehensive by maintaining the cell type information in the adjacent cell list and notify the cell type information in the building process of X2, the cell type information can be used to select appropriate switch target cell for UE, to realize switch judging optimization, improve switch success rate and reduce the operation and maintenance cost of operators.
Description
Technical field
The present invention relates to the communications field, particularly, relate to a kind of cell type informing method and system based on Long Term Evolution (Long Term Evolution abbreviates LTE as) system.
Background technology
Long Term Evolution (Long Term Evolution is described among the 36300-800, abbreviating LTE as) network is by E-UTRAN (Evolved Universal Terrestrial Radio Access Network, the Universal Terrestrial Radio Access Network of evolution), base station (Evolved NodeB, abbreviate eNB as) and evolution packet switching center (Evolved Packet Core abbreviates EPC as) composition.
Wherein, E-UTRAN comprises the set of the eNB that is connected by the S1 interface with EPC, can connect by X2 between the eNB.Wherein, S1, X2 are logic interfacing.An EPC can manage one or more eNB, and a Node B also can be controlled by a plurality of EPC, and an eNB can manage one or more residential quarters.Fig. 1 shows the LTE schematic network structure.
On the one hand, setting up and run a network needs a lot of work, and such as planning, configuration, optimization, calculating, adjustment, test, guard against false, minimizing failure, self-recovery etc., operator need reduce operation cost and maintenance cost.On the other hand, the user need simplify the use flow process, and such as Home Node B (family expenses Node B) equipment, the user wishes that the product of buying namely is a PnP device, and one powers on namely can obtain configuration operation automatically.
Next generation mobile networks (The Nest Generation Network, abbreviate NGN as) trend must be self-configuring, self-optimizing, self adaptation, human factor is more and more littler to the influence of network, therefore, proposed the self-organizing network concept in the industry, self-organizing network comprises self-configuring and self-optimizing two aspects.Because Neighboring Cell List is very big to the influence of switching, so the generation of Neighboring Cell List is as a content of self-configuring, and purpose is exactly in order to improve quality of handoff, makes network performance in time be consistent with network change.
At present, in 3GPP 36.423 agreements, stipulate, between the base station after the transport layer link establishment, the base station initiates X2 can for adjacent base station and set up request message, handle successfully if receive the base station of message, will reply X2 and set up response message, set up failure response otherwise reply X2.Set up the information that comprises all Serving cells under this base station in the request message, specifically comprise information such as residential quarter physical token symbol, global flag symbol, TAI, broadcasting PLMN (Public Land Mobile Network, PLMN), frequency.
In LTE, because cell type is more extensive, comprise macrocell, Microcell, PICO (Pico cell) residential quarter, FEMITO residential quarter etc., terminal is when carrying out handover decisions, switch the different switchover policy of use for dissimilar residential quarters, therefore, safeguard that in Neighboring Cell List cell type is necessary, simultaneously, the cell information report set up in the process of X2 has great influence to Neighboring Cell List.Yet, still be unrealized at present and set up the technology that process is carried out the cell type maintenance by X2.
Summary of the invention
Consider the problem of a kind of cell type maintaining method of the needs that exist in the correlation technique and propose the present invention, for this reason, the present invention aims to provide a kind of cell type informing method based on the LTE system and system, and the notifying cell type is feasible in process can safeguard cell type in Neighboring Cell List by setting up at X2 for it.
According to an aspect of the present invention, a kind of cell type informing method based on the LTE system is provided, after being used for setting up the transport layer link in the first adjacent or contiguous base station and second base station, this method carries out the notice of cell type, wherein, first base station can be connected by X2 interface with second base station.
The cell type informing method based on the LTE system according to the embodiment of the invention comprises following processing: first base station sends X2 and sets up request message to second base station, wherein, X2 sets up the service cell information of the one or more Serving cells that carry first base station in the request message, and comprises cell type information in the service cell information; Second base station receives X2 and sets up request message, preserves X2 and sets up the service cell information of carrying in the request message.
Preferably, after service cell information was preserved in second base station, said method further comprised: second base station is set up and/or maintenance neighborlist according to service cell information, and records the cell type information of each Serving cell in Neighboring Cell List.
Receive after X2 sets up request message in second base station, said method further comprises: second base station is set up request message to X2 and is handled, and handling under the case of successful, return X2 and set up response message, wherein, X2 sets up the service cell information of the one or more Serving cells that carry second base station in the response message, and can comprise cell type information in the service cell information; Under the situation of handling failure, return X2 and set up failed message.
Based on foregoing, this method can further include: first base station receives X2 and sets up response message, preserves X2 and sets up the service cell information of carrying in the response message.And first base station is set up and/or maintenance neighborlist according to service cell information, and records the cell type information of each Serving cell in Neighboring Cell List.
According to a further aspect in the invention, provide a kind of cell type reporting system based on LTE, this system comprises can be by first base station and second base station of X2 interface connection.
In the cell type reporting system based on LTE according to the embodiment of the invention, first base station is used for sending X2 to second base station after setting up the transport layer link and sets up request message, wherein, X2 sets up the service cell information of the one or more Serving cells that carry first base station in the request message, and comprises cell type information in the service cell information; The X2 that second base station is used for reception first base station sets up request message, and preserves X2 and set up the service cell information of carrying in the request message.
Preferably, second base station is further used for that X2 is set up request message and handles, and handling under the case of successful, return X2 to first base station and set up response message, wherein, X2 sets up the service cell information of the one or more Serving cells that carry second base station in the response message, and can comprise cell type information in the service cell information.
Further preferably, first base station/second base station is further used for setting up and/or maintenance neighborlist according to service cell information, and records the cell type information of each Serving cell in Neighboring Cell List.
By above-mentioned at least one technical scheme provided by the invention, by in X2 foundation/response message, increasing cell type information, can utilize X2 to set up in the process between adjacent base station mutual to service cell information, increase is to the notice of cell type, make Neighboring Cell List institute maintenance information more comprehensive (having increased cell type), thereby help handover decisions, improve handover success rate, reduce operator's O﹠M cost.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the LTE network configuration of correlation technique;
Fig. 2 is the flow chart based on the cell type informing method of LTE according to the inventive method embodiment;
Fig. 3 is the Signalling exchange flow chart based on the cell type informing method of LTE according to the inventive method embodiment;
Fig. 4 is the detailed process flow chart based on the example of the cell type informing method of LTE according to the inventive method embodiment;
Fig. 5 is the structural representation based on the cell type reporting system of LTE of system according to the invention embodiment.
Embodiment
As mentioned above, very many owing to cell type in the LTE system, comprise macrocell, Microcell, the PICO residential quarter, FEMITO residential quarter etc., the switching principle of dissimilar minizones is different, even in the switching of same type of minizone, owing to authorize (such as (the Closed Subscriber Group of the CSG between Home eNodeB, closed user group) authorize) different, cause handoff decision result also different, therefore, safeguard that in Neighboring Cell List cell type is very important, and set up the foundation that service cell information notice in the process can have influence on Neighboring Cell List at X2.
In view of this, the embodiment of the invention provides a kind of method and system of notifying based on the cell type of LTE system, and the notifying cell type is feasible in process can safeguard cell type in Neighboring Cell List by setting up at X2 for it.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in restriction the present invention.
Method embodiment
According to the embodiment of the invention, a kind of cell type informing method based on the LTE system is provided, carry out the notice of cell type after this method is used for setting up the transport layer link in the first adjacent or contiguous base station and second base station, wherein, first base station can be connected by X2 interface with second base station.
As shown in Figure 2, the cell type informing method based on the LTE system according to the embodiment of the invention comprises following processing (step S202-step S204):
Step S202, first base station sends X2 and sets up request (X2 Setup Request) message (corresponding to 301 among Fig. 3) to second base station, wherein, X2 sets up the service cell information of the one or more Serving cells that carry first base station in the request message, and comprises cell type information in the service cell information;
Step S204, second base station receives X2 and sets up request message, preserves X2 and sets up the service cell information of carrying in the request message, uses for switching.
Wherein, following table 1 shows the schematic diagram according to the service cell information structure of correlation technique; Following table 2 shows the schematic diagram according to the service cell information structure of the embodiment of the invention.
Table one
| The cell title | There is situation | Scope |
| Cell physical address | M | 0～510 |
| Residential quarter ID | M | |
| TAI | M | |
| Broadcasting PLMN ID tabulation | M | 1 to maximum broadcasting PLMN number |
| Frequency | M |
Table two
By contrasting top table 1 and table 2 as can be seen, comprise information such as residential quarter physical token symbol, global flag symbol, TAI, broadcasting PLMN, frequency in the cell of table 1, than table 1, further increased the cell of cell type in the service cell information of the embodiment of the invention, and its span is macrocell, Microcell, PICO residential quarter, FEMITO residential quarter etc.
Preferably, in step S204, after second base station preservation service cell information (when perhaps preserving), can set up and/or maintenance neighborlist according to service cell information, and in Neighboring Cell List the record each Serving cell cell type information, like this, in the terminal switching process afterwards, can be that terminal is selected suitable Target cell in conjunction with this information.
In addition, receive after X2 sets up request message in second base station, will set up request message to X2 and handle.
On the one hand, handling under the case of successful, return X2 and set up response (X2 Setup Response) message (corresponding to 302 among Fig. 3), wherein, X2 sets up the service cell information that can carry one or more Serving cells of second base station in the response message, and can comprise cell type information in the service cell information.Similarly, first base station receives after X2 sets up response message, can preserve X2 and set up the service cell information of carrying in the response message, and set up and/or maintenance neighborlist according to service cell information, and in Neighboring Cell List, record the cell type information of each Serving cell.Wherein, the service cell information that the X2 that mentions here sets up in the response message also adopts structure as shown in table 2.
On the other hand, under the situation of handling failure, second base station is returned X2 and is set up failure (X2 Setup Failure) message (corresponding to 303 among Fig. 3).
By the present invention may be better understood in conjunction with following example.Suppose to exist eNB1 (first base station) and these two base stations of having set up the transport layer link of eNB2 (second base station), then as shown in Figure 4, can be described below according to the cell type informing method of the embodiment of the invention:
Step S402:eNB1 initiates X2 Setup Request message for adjacent eNB2 after transport layer is set up, and comprises the information of all Serving cells under the eNB1 in this request message, comprises cell type information in the service cell information again;
Step S404:eNB2 receives X2 Setup Request message, carry out X2 interface and set up processing, and wherein the service cell information of entrained eNB1 is kept at this locality, is used for generation and the maintenance of Neighboring Cell List, and wherein there is the corresponding district type information each residential quarter in Neighboring Cell List;
If handle successfully, then proceed to step S406, otherwise, proceed to step S408;
Step S406:eNB2 sends X2 Setup Response message to eNB1, wherein comprises the information of all Serving cells under the eNB2, comprises cell type information in the service cell information again;
Step S408:eNB2 sends X2 Setup Failure message to eNB1.
By top embodiment as can be seen, by setting up notifying cell type information in the process at X2, and safeguard cell type information in Neighboring Cell List, can utilize cell type information is that UE selects suitable switching target small area, the realization switch decision is optimized, and improves handover success rate.
System embodiment
According to the embodiment of the invention, a kind of cell type reporting system based on LTE is provided, as described in Figure 5, this system comprises can be by first base station 502 and second base station 504 of X2 interface connection.
In the cell type reporting system based on LTE according to the embodiment of the invention, first base station 502 is used for sending X2 to second base station 504 after setting up the transport layer link and sets up request message, wherein, X2 sets up the service cell information of the one or more Serving cells that carry first base station 502 in the request message, and comprises cell type information in the service cell information; The X2 that second base station 504 is used for reception first base station 502 sets up request message, and preserves X2 and set up the service cell information of carrying in the request message.
Preferably, second base station 504 is further used for that X2 is set up request message and handles, and handling under the case of successful, return X2 to first base station 502 and set up response message, wherein, X2 sets up the service cell information of the one or more Serving cells that carry second base station 504 in the response message, and can comprise cell type information in the service cell information.
Further preferably, 502/ second base station 504, first base station is further used for setting up and/or maintenance neighborlist according to service cell information, and records the cell type information of each Serving cell in Neighboring Cell List.
Need to prove that a plurality of details of describing among the said method embodiment are equally applicable to this system embodiment, therefore, must blur the present invention for unnecessary, omitted being repeated in this description same or similar part.
As mentioned above, by means of the present invention, by set up notifying cell type information in the process at X2, and in Neighboring Cell List, safeguard cell type information, make that Neighboring Cell List institute maintenance information is more comprehensive, thereby can utilize cell type information to select suitable switching target small area for UE, realize switch decision optimization, improve handover success rate, reduce operator's O﹠M cost.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. cell type informing method based on long evolving system, carry out the notice of cell type after being used for setting up the transport layer link in the first adjacent or contiguous base station and second base station, wherein, first base station is connected by X2 interface with second base station, it is characterized in that described method comprises:
Described first base station sends X2 to described second base station and sets up request message, and wherein, described X2 sets up the service cell information of the one or more Serving cells that carry first base station in the request message, and comprises cell type information in the described service cell information;
Described second base station receives described X2 and sets up request message, preserves described X2 and sets up the described service cell information of carrying in the request message.
2. method according to claim 1 is characterized in that, after described service cell information was preserved in described second base station, described method further comprised:
Described second base station is set up and/or maintenance neighborlist according to described service cell information, and records the cell type information of each Serving cell in described Neighboring Cell List.
3. method according to claim 1 is characterized in that, described second base station receives after described X2 sets up request message, and described method further comprises:
Described second base station is set up request message to described X2 and is handled, and handling under the case of successful, return X2 and set up response message, wherein, described X2 sets up the service cell information of the one or more Serving cells that carry described second base station in the response message, and comprises cell type information in the described service cell information.
4. method according to claim 3 is characterized in that, further comprises:
Described first base station receives described X2 and sets up response message, preserves described X2 and sets up the described service cell information of carrying in the response message.
5. method according to claim 4 is characterized in that, after described service cell information was preserved in described first base station, described method further comprised:
Described first base station is set up and/or maintenance neighborlist according to described service cell information, and records the cell type information of each Serving cell in described Neighboring Cell List.
6. method according to claim 3 is characterized in that, further comprises:
Under the situation of handling failure, described second base station is returned X2 and is set up failed message.
7. cell type reporting system based on long evolving system, described cell type reporting system comprise first base station and second base station that connects by X2 interface, it is characterized in that,
Described first base station is used for sending X2 to described second base station after setting up the transport layer link and sets up request message, wherein, described X2 sets up the service cell information of the one or more Serving cells that carry first base station in the request message, and comprise cell type information in the described service cell information, it is one of following that cell type is at least: macrocell, Microcell, picocell PICO, Femto cell FEMITO;
The X2 that described second base station is used for described first base station of reception sets up request message, and preserves described X2 and set up the described service cell information of carrying in the request message.
8. system according to claim 7, it is characterized in that, described second base station is further used for that described X2 is set up request message and handles, and handling under the case of successful, return X2 to described first base station and set up response message, wherein, described X2 sets up the service cell information of the one or more Serving cells that carry described second base station in the response message, and comprises cell type information in the described service cell information.
9. system according to claim 8, it is characterized in that, described first base station is further used for setting up and/or maintenance neighborlist according to the service cell information of described second base station, and records the cell type information of each Serving cell in described Neighboring Cell List; Perhaps described second base station is further used for setting up and/or maintenance neighborlist according to the service cell information of described first base station, and records the cell type information of each Serving cell in described Neighboring Cell List.
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| PCT/CN2008/000007 WO2009082860A1 (en) | 2008-01-02 | 2008-01-02 | Cell type informing method and system based on lte system |
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| CN2008801086483A Active CN101810034B (en) | 2008-01-02 | 2008-12-31 | Method and system for notifying cell type based on lte |
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| CN101998535A (en) * | 2009-08-21 | 2011-03-30 | 中兴通讯股份有限公司 | Switch type control method and system of household base station |
| CN102006632B (en) * | 2009-09-03 | 2014-04-09 | 中兴通讯股份有限公司 | Method and system for controlling switching types of home base station |
| CN102045660B (en) * | 2009-10-22 | 2014-06-11 | 华为技术有限公司 | Information interaction method, system, base station and network entity |
| CN102111833A (en) * | 2010-02-04 | 2011-06-29 | 电信科学技术研究院 | Method for acquiring configuration information and base station |
| CN102176781A (en) * | 2011-01-07 | 2011-09-07 | 电信科学技术研究院 | Information acquisition method and device |
| CN102638834B (en) * | 2011-02-10 | 2016-12-28 | 中兴通讯股份有限公司 | The neighbor relationship management method of across a network node and device |
| WO2012106899A1 (en) * | 2011-07-18 | 2012-08-16 | 华为技术有限公司 | Data transmission method, device and system |
| CN102421145B (en) * | 2011-11-24 | 2015-02-04 | 中国联合网络通信集团有限公司 | Method and system for carrying out direct communication of data among base stations |
| WO2012092858A2 (en) * | 2012-01-04 | 2012-07-12 | 华为技术有限公司 | Method, system, and enb for establishing secure x2 channel |
| CN102724651B (en) * | 2012-06-05 | 2015-02-04 | 中国联合网络通信集团有限公司 | Method, equipment and system for data straight-through processing |
| WO2014205818A1 (en) * | 2013-06-28 | 2014-12-31 | 华为技术有限公司 | Link establishing method, apparatus and system |
| KR101910777B1 (en) * | 2013-07-05 | 2018-10-22 | 후지쯔 가부시끼가이샤 | Information acquiring method, parameter optimizing method and apparatuses thereof and system |
| CN108632843A (en) * | 2017-03-24 | 2018-10-09 | 电信科学技术研究院 | A kind of method, first base station and the second base station that inter-base station interface is established |
| CN111225425B (en) * | 2017-03-29 | 2022-12-27 | 安科讯(福建)科技有限公司 | Method and system for configuring neighbor cell for improving cell switching efficiency |
| CN111356164A (en) * | 2018-12-21 | 2020-06-30 | 海能达通信股份有限公司 | Adjacent cell configuration error correction method in LTE network, related equipment and system |
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- 2008-01-02 WO PCT/CN2008/000007 patent/WO2009082860A1/en active Application Filing
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| CN1238650A (en) * | 1998-05-14 | 1999-12-15 | 三星电子株式会社 | Registration of mobile station |
| CN1848979A (en) * | 2005-07-07 | 2006-10-18 | 华为技术有限公司 | Calling method of group call |
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| CN101836477A (en) | 2010-09-15 |
| CN101810034A (en) | 2010-08-18 |
| WO2009082860A1 (en) | 2009-07-09 |
| WO2009086787A1 (en) | 2009-07-16 |
| CN101810034B (en) | 2012-08-08 |
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