CN102685713A - Method for switching from terminal to household base station - Google Patents
Method for switching from terminal to household base station Download PDFInfo
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- CN102685713A CN102685713A CN2011100565499A CN201110056549A CN102685713A CN 102685713 A CN102685713 A CN 102685713A CN 2011100565499 A CN2011100565499 A CN 2011100565499A CN 201110056549 A CN201110056549 A CN 201110056549A CN 102685713 A CN102685713 A CN 102685713A
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Abstract
The invention discloses a method for switching from a terminal to a household base station. The method includes firstly, judging whether frequency of the household base station is changed or not after the household base station is restarted; transmitting the changed frequency value to a macro base station adjacent to or shared under the same coverage with the household base station or an adjacent household base station through an S1 interface if the frequency is changed; secondly, noticing a service base station which the terminal belongs to currently for measuring and configuring correspondingly by approach instruction information before the terminal is switched to the household base station; thirdly, noticing the terminal to measure and configure correctly by the service base station according to the updated approach instruction information; and fourthly, switching from the terminal to the target household base station according to the correct measurement and configuration. By the method for switching from the terminal to the household base station, the fact that the terminal cannot be switched to the corresponding household base station in time, caused by mistaken measurement and configuration of the macro base station to the terminal, is avoided. Switching failure is solved, switching success rate is increased and communication quality is guaranteed.
Description
Technical field
The invention belongs to wireless communication technology field, relate to the method that switch to Home eNodeB at a kind of terminal.
Background technology
LTE (Long Term Evolution, Long Term Evolution) network by macro base station (Macro eNodeB, MeNB), (Home eNodeB, HeNB) (Evolved Packet Core EPC) forms Home eNodeB HeNB with the evolution packet switching center.HeNB to user's access support closed order group (Closed Subscribe Group, CSG), mix (Hybrid) and open (Open) three kinds of patterns.ENB (comprising MeNB, HeNB) is connected through the S1 interface with EPC, can connect through X2 interface between the MeNB, does not have X2 interface between the HeNB and between HeNB and the MeNB at present.S1, X2 are logic interfacing.An EPC can manage one or more eNB, and an eNB also can be controlled by a plurality of EPC, and an eNB can manage one or more sub-districts.
For Target cell is the switching of the home cell (terminal is inserted with the CSG pattern, below is referred to as to the CSG sub-district) of CSG pattern or Hybrid pattern, and the measurement configuration process before it switches and Target cell are that the measurement configuration process of macro base station is different.In the existing standard of LTE; The terminal needs to trigger the measurement to the CSG sub-district according to fingerprint matching (fingerprint) result of oneself; For the alien frequencies situation, UE can use near the indication (Proximity Indication, PI) message notifies current Serving cell to carry out corresponding measurement configuration; Comprise the indication that gets into/leave the CSG cell range in the PI message, and the frequency information of CSG sub-district.On the other hand because the laying of HeNB confirmed by the user, do not receive carrier network planning restriction, therefore, the LTE system allows HeNB to have descending receiving function.The current wireless environment that HeNB can measure according to oneself when starting carries out parameters such as automatic configuration frequency, power and PCI.Because Home eNodeB is after restarting or upgrading under the CSG sub-district; The possibility that has frequency shift; The frequency shift information if the former serving BS in terminal can not upgrade in time because the frequency information that comprises in the PI message is different with the frequency information of CSG sub-district use, then can cause former serving BS that wrong measurement configuration is carried out at the terminal; Cause the terminal can't in time switch to correct CSG sub-district, failure (as shown in Figure 1) finally switches.
Existing solution is: HeNB uses X2 interface to inform neighbours' frequency shift, and the terminal adds PCI when reporting PI message, searches correct frequency information for former serving BS.But in present LTE system, have only 504 available PCI altogether, mean that so each PCI need be in different re-used across cells.Because the laying of Home eNodeB makes that number of cells becomes very huge in the zone of a macrocell.Under this scene, the PCI conflict of neighbor cell takes place easily, and two non-conterminous neighbor cells of certain sub-district use identical PCI (being that PCI obscures).Therefore, after HeNB restarted, its PCI value may change, and perhaps PCI occurs with other HeNB and obscures.
Summary of the invention
Technical problem to be solved by this invention is: the method that provides a kind of terminal to switch to Home eNodeB, this method can improve the terminal to the Home eNodeB success rate for switching.
For solving the problems of the technologies described above, the present invention adopts following technical scheme.
A kind of terminal may further comprise the steps to the method that Home eNodeB switches:
Step 1 after Home eNodeB restarts, judges whether occurrence frequency changes for self; If occurrence frequency changes, the frequency values after then will changing is issued with said Home eNodeB through the S1 interface and is covered together or adjacent macro base station, and adjacent Home eNodeB;
Step 2, before said Home eNodeB switched, the terminal was used near Indication message and is notified self serving BS under current to carry out corresponding measurement configuration at the terminal; Said frequency and the E-CGI that comprises the target home base station cells near Indication message; Corresponding measurement configuration is for to upgrade near indication information said;
Step 3, said serving BS is according to carrying out correct measurement configuration near Indication message notice terminal after upgrading;
Step 4, the terminal begins to switch to the target Home eNodeB according to correct measurement configuration.
As a kind of preferred version of the present invention, said frequency, Physical Cell Identifier and the E-CGI that comprises the target home base station cells near Indication message.
As another kind of preferred version of the present invention, in the step 1, the process that the frequency values after said Home eNodeB will change is issued adjacent base station is:
Steps A utilizes the base station configuration Transfer Message in the S1 Application Protocol to send to Mobility Management Entity;
Step B, Mobility Management Entity is transmitted to adjacent base station through the frequency values of Mobility Management Entity configuration Transfer Message after with said change.
As another preferred version of the present invention, in the step 2, the said content of upgrading near indication information is comprised that the frequency to the target home base station cells refreshes.
Beneficial effect of the present invention is: the measurement configuration that the method for the invention has avoided macro base station that mistake is carried out at the terminal causes the terminal can't in time switch to corresponding home base station cells; Solved the problem of inbound mobility handoff failure; Improve handover success rate, guaranteed the quality of communication.
Description of drawings
Fig. 1 is the scene sketch map that switch to Home eNodeB at traditional terminal;
Fig. 2 is the method flow diagram that switch to Home eNodeB at terminal of the present invention.
Embodiment
The present invention relates to radio honeycomb communication system, more particularly, is in the LTE GSM, and the improvement of process is reported in the measurement of terminal before Home eNodeB switches.The present invention promptly is that frequency that possibly exist and PCI change the problem of bringing, and propose solution after restarting to Home eNodeB.
Do further explain below in conjunction with the accompanying drawing specific embodiments of the invention.
Embodiment one
Because in the present LTE standard, HeNB and adjacent MeNB and other HeNB do not have X2 interface, therefore, the present invention proposes the method that switch to Home eNodeB at a kind of terminal, and the implementation procedure of this method is:
After HeNB restarts; If change has taken place in the frequency information that HeNB uses; The frequency values that then at first will oneself be selected for use is through S1 AP (Application Protocol; Application protocol) the eNB Configuration Transfer in (base station configuration transfer) message sends to MME (Mobility Management Entity; Mobility Management Entity), MME is transmitted to the MeNB adjacent with this HeNB and other HeNB through the frequency values that MME Configuration Transfer (the Mobility Management Entity configuration is shifted) message is selected HeNB for use again.Simultaneously; Because the PCI of the HeNB of restarting also can change or obscure with other HeNB; The present invention proposes in PI message, to add E-CGI (E-UTRAN Cell Global Identifier; Evolved global grounding wireless access network sub-district general identifications) information supplies serving BS to confirm the frequency values of the current use of target HeNB, thereby avoids macro base station that wrong measurement configuration is carried out at the terminal; Cause the terminal can't in time switch to corresponding home base station cells, the problem of inbound mobility (mobility in the territory: the user in the macro base station moves to Home eNodeB) handoff failure finally takes place.
Concrete scheme is as shown in Figure 2, may further comprise the steps:
1) after Home eNodeB (HeNB) restarts, judges whether occurrence frequency changes for self; If the Home eNodeB occurrence frequency changes; Then its frequency shift information (frequency values that current Home eNodeB is selected for use) is passed through the S1 interface; Utilize the eNBConfiguration Transfer message among the S1 AP to send to MME; The frequency values that MME selects current Home eNodeB for use through MME Configuration Transfer message again is transmitted to Home eNodeB and covers together or adjacent macro base station (MeNB), and adjacent HeNB;
2) in the measurement configuration process of terminal before the target Home eNodeB switches, the terminal will be used near indication (PI) message informing current service cell and carried out corresponding measurement configuration; In PI message, add the E-CGI information of this Home eNodeB that is write down before the terminal;
3) Current Serving BTS carries out corresponding measurement configuration according to the PI message informing terminal that receives;
4) terminal begins to carry out the handoff procedure to Home eNodeB according to the measurement configuration that receives.
The present invention is directed to Home eNodeB (Home eNodeB in the present LTE standard; The frequency and Physical Cell Identifier (the Physical Cell ID that HeNB) possibly exist after restarting; PCI) problem that changes proposes after HeNB is restarted, and the frequency shift information of HeNB is notified to covering together or adjacent macro base station (Macro eNodeB with HeNB through the S1 interface; MeNB), reach adjacent HeNB; And at the terminal before this HeNB switches report (Proximity Indication PI) needs to add E-CGI (the E-UTRAN Cell Global Identifier) information of this HeNB sub-district of being write down before the terminal in the message, the terminal is carried out the measurement configuration of mistake to prevent MeNB near indication; Thereby solved because of HeNB cell frequency and PCI change the problem of bringing, improved the terminal to the HeNB success rate for switching.
Description of the invention and application are illustrative, are not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of the embodiment that is disclosed and change are possible, and the replacement of embodiment is known with the various parts of equivalence for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or substantive characteristics, and the present invention can be with other forms, structure, layout, ratio, and realize with other elements, material and parts.
Claims (4)
1. a terminal is characterized in that to the method that Home eNodeB switches, and may further comprise the steps:
Step 1 after Home eNodeB restarts, judges whether occurrence frequency changes for self; If occurrence frequency changes, the frequency values after then will changing is issued with said Home eNodeB through the S1 interface and is covered together or adjacent macro base station, and adjacent Home eNodeB;
Step 2, before said Home eNodeB switched, the terminal was used near Indication message and is notified self serving BS under current to carry out corresponding measurement configuration at the terminal; Said frequency and the E-CGI that comprises the target home base station cells near Indication message; Corresponding measurement configuration is for to upgrade near indication information said;
Step 3, said serving BS is according to carrying out correct measurement configuration near Indication message notice terminal after upgrading;
Step 4, the terminal begins to switch to the target Home eNodeB according to correct measurement configuration.
2. terminal according to claim 1 is characterized in that: said frequency, Physical Cell Identifier and the E-CGI that comprises the target home base station cells near Indication message to the method that Home eNodeB switches.
3. terminal according to claim 2 is characterized in that to the method that Home eNodeB switches in the step 1, the process that the frequency values after said Home eNodeB will change is issued adjacent base station is:
Steps A utilizes the base station configuration Transfer Message in the S1 Application Protocol to send to Mobility Management Entity;
Step B, Mobility Management Entity is transmitted to adjacent base station through the frequency values of Mobility Management Entity configuration Transfer Message after with said change.
4. terminal according to claim 2 is characterized in that: in the step 2, the said content of upgrading near indication information is comprised that frequency and Physical Cell Identifier to the target home base station cells refresh to the method that Home eNodeB switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110056549.9A CN102685713B (en) | 2011-03-09 | A kind of method that terminal switches to Home eNodeB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110056549.9A CN102685713B (en) | 2011-03-09 | A kind of method that terminal switches to Home eNodeB |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102685713A true CN102685713A (en) | 2012-09-19 |
| CN102685713B CN102685713B (en) | 2016-12-14 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014086006A1 (en) * | 2012-12-05 | 2014-06-12 | 华为技术有限公司 | Method and device for selecting cell with scalable bandwidth, and user equipment |
| WO2014113919A1 (en) * | 2013-01-22 | 2014-07-31 | Broadcom Corporation | Addressing communication failure in multiple connection systems |
| WO2015035958A1 (en) * | 2013-09-16 | 2015-03-19 | 华为技术有限公司 | Method, user equipment, and macro base station for starting inter-frequency measurement |
| CN105578507A (en) * | 2015-12-30 | 2016-05-11 | 京信通信技术(广州)有限公司 | Adjacent cell configuration method and device |
| WO2016141587A1 (en) * | 2015-03-12 | 2016-09-15 | 华为技术有限公司 | Cell switching method and device |
| CN107302778A (en) * | 2017-08-23 | 2017-10-27 | 河海大学常州校区 | A kind of vertically downward switch determining method between macro base station and Home eNodeB |
| CN107493593A (en) * | 2016-06-13 | 2017-12-19 | 中国移动通信有限公司研究院 | A kind of cell switching method, device, relevant device and system |
| US9955417B2 (en) | 2013-09-29 | 2018-04-24 | Zte Corporation | Method for realizing awakening of small cell, access network element device and computer storage medium |
| WO2018137427A1 (en) * | 2017-01-26 | 2018-08-02 | 中兴通讯股份有限公司 | Method and system for realizing measurement coordination, user equipment, and storage medium |
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| CN101568196A (en) * | 2008-09-26 | 2009-10-28 | 华为技术有限公司 | Method and device for distributing physical cell identifiers |
| KR20100113406A (en) * | 2009-04-13 | 2010-10-21 | 삼성전자주식회사 | Apparatus and method for supporting handover between macro cell and femto cell in wireless communication system |
| CN101925087A (en) * | 2009-06-11 | 2010-12-22 | 中兴通讯股份有限公司 | Measurement reporting method of CSG (Closed Subscriber Group) cell and corresponding UE (User Equipment) |
Patent Citations (3)
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| CN101568196A (en) * | 2008-09-26 | 2009-10-28 | 华为技术有限公司 | Method and device for distributing physical cell identifiers |
| KR20100113406A (en) * | 2009-04-13 | 2010-10-21 | 삼성전자주식회사 | Apparatus and method for supporting handover between macro cell and femto cell in wireless communication system |
| CN101925087A (en) * | 2009-06-11 | 2010-12-22 | 中兴通讯股份有限公司 | Measurement reporting method of CSG (Closed Subscriber Group) cell and corresponding UE (User Equipment) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014086006A1 (en) * | 2012-12-05 | 2014-06-12 | 华为技术有限公司 | Method and device for selecting cell with scalable bandwidth, and user equipment |
| US9930581B2 (en) | 2013-01-22 | 2018-03-27 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Addressing communication failure in multiple connection systems |
| WO2014113919A1 (en) * | 2013-01-22 | 2014-07-31 | Broadcom Corporation | Addressing communication failure in multiple connection systems |
| WO2015035958A1 (en) * | 2013-09-16 | 2015-03-19 | 华为技术有限公司 | Method, user equipment, and macro base station for starting inter-frequency measurement |
| US9955417B2 (en) | 2013-09-29 | 2018-04-24 | Zte Corporation | Method for realizing awakening of small cell, access network element device and computer storage medium |
| WO2016141587A1 (en) * | 2015-03-12 | 2016-09-15 | 华为技术有限公司 | Cell switching method and device |
| CN106537982A (en) * | 2015-03-12 | 2017-03-22 | 华为技术有限公司 | Cell switching method and device |
| CN106537982B (en) * | 2015-03-12 | 2020-10-16 | 泉州台商投资区天泰工业设计有限公司 | Cell switching method and device |
| CN105578507A (en) * | 2015-12-30 | 2016-05-11 | 京信通信技术(广州)有限公司 | Adjacent cell configuration method and device |
| CN107493593A (en) * | 2016-06-13 | 2017-12-19 | 中国移动通信有限公司研究院 | A kind of cell switching method, device, relevant device and system |
| WO2018137427A1 (en) * | 2017-01-26 | 2018-08-02 | 中兴通讯股份有限公司 | Method and system for realizing measurement coordination, user equipment, and storage medium |
| CN108366378A (en) * | 2017-01-26 | 2018-08-03 | 中兴通讯股份有限公司 | It is a kind of to realize method, system and the user equipment for measuring and coordinating |
| CN107302778B (en) * | 2017-08-23 | 2020-02-21 | 河海大学常州校区 | Vertical downward switching judgment method between macro base station and home base station |
| CN107302778A (en) * | 2017-08-23 | 2017-10-27 | 河海大学常州校区 | A kind of vertically downward switch determining method between macro base station and Home eNodeB |
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Granted publication date: 20161214 Termination date: 20190309 |