CN102802221B - A kind of changing method of via node - Google Patents
A kind of changing method of via node Download PDFInfo
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- CN102802221B CN102802221B CN201110143157.6A CN201110143157A CN102802221B CN 102802221 B CN102802221 B CN 102802221B CN 201110143157 A CN201110143157 A CN 201110143157A CN 102802221 B CN102802221 B CN 102802221B
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000008569 process Effects 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 5
- JZEPSDIWGBJOEH-UHFFFAOYSA-N 4-decylbicyclo[2.2.1]hept-2-ene Chemical compound C1CC2C=CC1(CCCCCCCCCC)C2 JZEPSDIWGBJOEH-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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Abstract
The invention provides a kind of changing method of via node, whether the Serving cell of target BS is relay base station community to make source base station know in advance, and select relay base station community to switch as Target cell when switching, the Target cell owing to switching so can be avoided not support the access of mobile relay and the handoff failure that causes, thus effectively can improve the handover success rate of via node.
Description
Technical field
The present invention relates to the handoff technique in mobile communication system, particularly relate to the changing method of via node in lte-a system.
Background technology
At present, in lte-a system, introduce the concept of relaying (Relay), to expand the application of LTE Rel-8.By the introducing to Relay, the MPS process of two-forty can be extended, realize the enhancing of group mobility, casual network deployment, cell data business throughput, and meet the demand in new regional on-premise network.
Via node (Relay Node, RN), be wirelessly connected on a base station (eNB) supporting RN, this eNB is called as relaying eNB (Donor eNB, DeNB).RN is between UE and eNB.Wave point between RN and eNB is an E-UTRAN air interface be modified, and is called as Un interface.RN needs all functions supporting eNB, and this just means, E-UTRAN Radio interface protocols, and S1/X2 agreement will terminate at RN.Correspondingly, from the angle of agreement, the function that eNB supports, RN will support, unless agreement defines especially.
Except the function of eNB, RN also will support the function of UE, such as physical layer, layer 2, RRC agreement, also has NAS function, because only have RN to support the function of UE, just can be connected to DeNB.
At present, in order to meet the mobility demand of UE, propose via node also transportable concept, like this, relaying eNB also needs the mobility supporting via node.Correspondingly, due to the mobility of via node, also draw the switching problem of via node.In the system of existing support RN, when carrying out via node switching, its serving BS only selects the Target cell carrying out switching according to current measurement result, do not consider whether Target cell is the community supporting mobile relay access, like this, if the access of mobile relay is not supported in selected Target cell, so after this carried out switching will failure.
Summary of the invention
In view of this, main purpose of the present invention is the changing method providing a kind of via node, and the method effectively can improve the handover success rate of via node.
In order to achieve the above object, the technical scheme that the present invention proposes is:
A changing method for via node, the method comprises the following steps:
In advance in X2 interface process of establishing, source base station by X2 set up request message by its Serving cell be whether the message notice of relay base station community to target BS, whether described target BS sets up response message by its Serving cell by X2 is that the message notice of relay base station community is to described source base station;
When the via node that described source base station is served needs to switch, described source base station selects a Target cell as described switching according to current signal measurement result from known relay base station community, and triggers the process that described via node switches to described Target cell.
A changing method for via node, the method comprises the following steps:
When a community is set to relay base station community, the message notice that this community is relay base station community by network operation maintenance system (O & M) gives the base station belonging to adjacent cell of this community;
When via node needs to switch, the source base station belonging to it selects a Target cell as described switching according to current signal measurement result from known relay base station community, and triggers the process that described via node switches to described Target cell.
In sum, the changing method of the via node that the present invention proposes, whether the Serving cell of target BS is relay base station community to make source base station know in advance, and select relay base station community to switch as Target cell when switching, the Target cell owing to switching so can be avoided not support the access of mobile relay and the handoff failure that causes, thus effectively can improve the handover success rate of via node.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with specific embodiment, the present invention is described in further detail.
Core concept of the present invention is, make to preserve in the serving BS of via node the information whether Target cell is relay base station community in advance, like this, when needs carry out via node switching, serving BS can only select relay base station community as Target cell, thus can avoid the handoff failure problem that occurs as Target cell owing to have selected non-relay base station community.
In actual applications, make to preserve in the serving BS of via node the information whether Target cell is relay base station community, can adopt two kinds of methods, a kind of is by the message in X2 interface process of establishing, and another kind is notified by network operation maintenance system.Be described respectively by two specific embodiments of the present invention below.
By X2 interface process of establishing in the embodiment of the present invention one, make to preserve in the serving BS of via node the information whether Target cell is relay base station community, mainly comprise the following steps:
In advance in X2 interface process of establishing, source base station by X2 set up request message by its Serving cell be whether the message notice of relay base station community to target BS, whether described target BS sets up response message by its Serving cell by X2 is that the message notice of relay base station community is to described source base station.
When the via node that described source base station is served needs to switch, described source base station selects a Target cell as described switching according to current signal measurement result from known relay base station community, and triggers the process that described via node switches to described Target cell.
Here it should be noted that, in existing system, when needing to carry out mutual when between two base stations, need to perform X2 interface process of establishing.Like this, interaction message in X2 interface process of establishing can be utilized, carry the information whether Serving cell is relay base station community.Preferably, source base station can set up the service cell information territory in request message by X2, carries the information whether its Serving cell is relay base station community.Described target BS can set up the service cell information territory in response message by X2, carry the information whether its Serving cell is relay base station community.
Further, in order to ensure the accuracy of base station cell information, can also, when the configuration information of described source base station needs to upgrade, whether be that the message notice of relay base station community is to target BS by base station configuration updating request message by its Serving cell.Preferably, described source base station can by the service cell information territory in base station configuration updating information, carries the information whether its Serving cell is relay base station community.
By network operation maintenance system in the embodiment of the present invention two, make to preserve in the serving BS of via node the information whether Target cell is relay base station community, particularly, embodiment two mainly comprises the following steps:
When a community is set to relay base station community, the message notice that this community is relay base station community by network operation maintenance system (O & M) gives the base station belonging to adjacent cell of this community.
When via node needs to switch, the source base station belonging to it selects a Target cell as described switching according to current signal measurement result from known relay base station community, and triggers the process that described via node switches to described Target cell.
Preferably, O & M can change notification message by the attribute carrying adjacent cell list, the message notice being relay base station community by this community gives the base station belonging to adjacent cell of this community, be used to indicate comprising the identification information that adjacent cell is relay base station community in described adjacent cell list with the adjacent cell list difference in existing system.
Further, can also comprise in described adjacent cell list and be used to indicate adjacent cell and be relay base station community but the identification information of Target cell that via node switches can not be used for; Correspondingly, Target cell as described switching is selected to obtain the relay base station community that via node switches from known may be used for by by described source base station, so can strengthen the flexibility of system maintenance, make system can control some relay base station communities can not be used for via node switch Target cell.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a changing method for via node, is characterized in that, the method comprises the following steps:
In advance in X2 interface process of establishing, source base station by X2 set up request message by its Serving cell be whether the message notice of relay base station community to target BS, whether described target BS sets up response message by its Serving cell by X2 is that the message notice of relay base station community is to described source base station;
When the via node that described source base station is served needs to switch, described source base station selects a Target cell as described switching according to current signal measurement result from known relay base station community, and triggers the process that described via node switches to described Target cell.
2. method according to claim 1, is characterized in that, source base station sets up the service cell information territory in request message by X2, carries the information whether its Serving cell is relay base station community.
3. method according to claim 1, is characterized in that, described target BS sets up the service cell information territory in response message by X2, carries the information whether its Serving cell is relay base station community.
4. method according to claim 1, is characterized in that, described method comprises further:
When the configuration information of described source base station needs to upgrade, whether be that the message notice of relay base station community is to target BS by base station configuration updating request message by its Serving cell.
5. method according to claim 4, is characterized in that, described source base station, by the service cell information territory in base station configuration updating request message, carries the information whether its Serving cell is relay base station community.
6. a changing method for via node, is characterized in that, the method comprises the following steps:
When a community is set to relay base station community, the message notice that this community is relay base station community by network operation maintenance system O & M gives the base station belonging to adjacent cell of this community;
When via node needs to switch, the source base station belonging to it selects a Target cell as described switching according to current signal measurement result from known relay base station community, and triggers the process that described via node switches to described Target cell.
7. method according to claim 6, it is characterized in that, O & M changes notification message by the attribute carrying adjacent cell list, the message notice being relay base station community by this community gives the base station belonging to adjacent cell of this community, comprises and be used to indicate the identification information that adjacent cell is relay base station community in described adjacent cell list.
8. method according to claim 7, is characterized in that, comprises to be used to indicate adjacent cell and to be relay base station community but can not to be used for the identification information of Target cell that via node switches in described adjacent cell list;
Target cell as described switching is selected to obtain the relay base station community that via node switches from known may be used for by described source base station.
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| CN201110143157.6A CN102802221B (en) | 2011-05-27 | 2011-05-27 | A kind of changing method of via node |
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| CN201110143157.6A CN102802221B (en) | 2011-05-27 | 2011-05-27 | A kind of changing method of via node |
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| CN102802221A CN102802221A (en) | 2012-11-28 |
| CN102802221B true CN102802221B (en) | 2015-10-21 |
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| CN106550412B (en) * | 2015-09-21 | 2021-06-29 | 索尼公司 | Electronic device and wireless communication method in wireless communication system |
| CN117295135A (en) * | 2022-06-17 | 2023-12-26 | 华为技术有限公司 | Communication method, device and computer readable storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101365242A (en) * | 2008-08-29 | 2009-02-11 | 同济大学 | Method and system based on mobile prediction and group switching |
| WO2010101442A2 (en) * | 2009-03-06 | 2010-09-10 | 삼성전자주식회사 | Group handover method and apparatus in broadband wireless communication system that supports mobile relay station |
| CN101932120A (en) * | 2009-06-22 | 2010-12-29 | 华为技术有限公司 | Connection establishment method and device for relay node and network node |
| CN102076041A (en) * | 2011-01-30 | 2011-05-25 | 大唐移动通信设备有限公司 | Resource allocation method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101873675B (en) * | 2009-04-22 | 2015-08-19 | 中兴通讯股份有限公司 | A kind of sending method of multi-point cooperative transmission cooperative group information and base station |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101365242A (en) * | 2008-08-29 | 2009-02-11 | 同济大学 | Method and system based on mobile prediction and group switching |
| WO2010101442A2 (en) * | 2009-03-06 | 2010-09-10 | 삼성전자주식회사 | Group handover method and apparatus in broadband wireless communication system that supports mobile relay station |
| CN101932120A (en) * | 2009-06-22 | 2010-12-29 | 华为技术有限公司 | Connection establishment method and device for relay node and network node |
| CN102076041A (en) * | 2011-01-30 | 2011-05-25 | 大唐移动通信设备有限公司 | Resource allocation method and device |
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