CN101400095A - Target cell determining method, user equipment, base station and system in switching process - Google Patents
Target cell determining method, user equipment, base station and system in switching process Download PDFInfo
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- CN101400095A CN101400095A CNA2007101515876A CN200710151587A CN101400095A CN 101400095 A CN101400095 A CN 101400095A CN A2007101515876 A CNA2007101515876 A CN A2007101515876A CN 200710151587 A CN200710151587 A CN 200710151587A CN 101400095 A CN101400095 A CN 101400095A
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- layer identifications
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- switching command
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Abstract
The invention discloses a method of determining an object district in the switching process, comprising: receiving switching command of physical layer identification carrying along the object district by a user equipment (UE); acquiring the physical layer identification of adjacent districts from a synchronizing channel of the adjacent districts; when the acquired physical layer identification is consistent with that carried along in the received switching command, determining the adjacent districts are the object districts. In addition, the invention also discloses a UE, a source base station and a determining system of the object district in the switching process. The technical scheme of the invention requires no dynamic broadcast channel, thereby saving delay of reading the broadcast channel, shortening interrupting time in the switching process, furthermore increasing the switching performance.
Description
Technical field
The present invention relates to wireless communication technology, relate in particular to target cell determining method, subscriber equipment, base station and system in a kind of handoff procedure.
Background technology
In communication system, when subscriber equipment (UE) switched in the minizone, whole switching flow roughly comprises measured-reports-adjudicate-carry out 4 steps.Promptly when radio condition changes, UE measures adjacent sub-district, and will comprise adjacent cell physical layer identifiers (being regional identify label) and the measurement report of quality information sends to source base station, source base station makes a policy according to measurement report, UE is when Target cell switches in decision, physical layer identifications and target BS according to Target cell carry out information exchange, finish the resource of Target cell and prepare; Source base station sends switching command to UE afterwards; UE disconnects and being connected of cell-of-origin according to switching command, and begin to be synchronized to Target cell, and on Target cell, begin transmission and receiving subscriber data, the Radio Resource of source of release sub-district, target BS notification source base station, switching is finished.
In the said process, when source base station and target BS carry out information exchange, target BS can be notified to source base station with the overall identification (being overall unique identify label) of self, source base station is carried at this overall identification in the switching command that sends to UE, UE is in order to discern the Target cell that switches, at first read the synchronizing channel of adjacent sub-district and carry out synchronous, read the main broadcast channel of adjacent sub-district synchronously, by reading the information that main broadcast channel obtains Dynamic Broadcast Channel (D-BCH), read Dynamic Broadcast Channel according to the information of being obtained, from Dynamic Broadcast Channel, obtain the overall identification of adjacent cell base station, the overall identification of the overall identification of being obtained and the target BS in the switching command that receives is compared, if consistent, determine that then the adjacent sub-district when preamble is a Target cell, continues handover operation; Otherwise again identification is searched in other sub-district.
But in the said process, because the transmission cycle of main broadcast channel and Dynamic Broadcast Channel is longer, for example in some system, the transmission cycle of main broadcast channel is roughly 40ms, the transmission cycle of Dynamic Broadcast Channel is roughly 80ms, then UE cycle of reading broadcast channel is roughly 120ms, and this moment, UE has disconnected and being connected of cell-of-origin, and set up and being connected of Target cell, therefore long HO-break duration may cause UE that data interruption takes place when receiving or sending data, causes performance of handoffs relatively poor.
Summary of the invention
In view of this, on the one hand provide target cell determining method in a kind of handoff procedure in the embodiment of the invention, provide in a kind of UE, source base station and the handoff procedure Target cell fixed system really on the other hand, so that improve performance of handoffs.
Target cell determining method in the handoff procedure that is provided in the embodiment of the invention comprises:
User equipment (UE) receives the switching command of the physical layer identifications that carries Target cell;
From the synchronizing channel of adjacent sub-district, obtain the physical layer identifications of described adjacent sub-district;
When the physical layer identifications that carries is consistent, determine that described adjacent sub-district is a Target cell in the described physical layer identifications that obtains and the switching command that is received.
The UE that is provided in the embodiment of the invention comprises:
Order receiver module, be used to receive the switching command of the physical layer identifications that carries Target cell;
The Target cell determination module is used for obtaining from the synchronizing channel of adjacent sub-district the physical layer identifications of described adjacent sub-district, when the physical layer identifications that carries in the described physical layer identifications that obtains and switching command is consistent, determines that described adjacent sub-district is a Target cell.
The source base station that is provided in the embodiment of the invention comprises:
Message processing module is used for the physical layer identifications of Target cell is carried at switching command;
The order sending module is used for the described switching command that carries the physical layer identifications of Target cell is sent to user equipment (UE).
Target cell fixed system really in the handoff procedure that is provided in the embodiment of the invention comprises:
Source base station is used for the physical layer identifications of Target cell is carried at switching command, and the described switching command that carries the physical layer identifications of Target cell is sent to user equipment (UE);
UE, be used to receive the described switching command that carries the physical layer identifications of Target cell from source base station, from the synchronizing channel of adjacent sub-district, obtain the physical layer identifications of described adjacent sub-district, when the physical layer identifications that carries is consistent, determine that described adjacent sub-district is a Target cell in the described physical layer identifications that obtains and the switching command that is received.
From such scheme as can be seen, carry the switching command of the physical layer identifications of Target cell in the embodiment of the invention by reception, but not carry the switching command of overall identification, from the synchronizing channel of adjacent sub-district, obtain the physical layer identifications of this neighbour sub-district afterwards, and need not after synchronously, to obtain overall identification from Dynamic Broadcast Channel, when the physical layer identifications that carries in physical layer identifications that judgement is obtained and the switching command that is received is consistent, determine that this neighbour sub-district is a Target cell, read the time delay that broadcast channel spends thereby omitted, shorten HO-break duration, and then improved performance of handoffs.
Description of drawings
Fig. 1 is the exemplary process diagram of target cell determining method in the handoff procedure in the embodiment of the invention;
Fig. 2 is the Target cell exemplary block diagram of fixed system really in the handoff procedure in the embodiment of the invention;
Fig. 3 is the internal structure schematic diagram of source base station in the embodiment of the invention;
Fig. 4 is the internal structure schematic diagram of UE in the embodiment of the invention.
Embodiment
In the embodiment of the invention, consider some system, in Long Term Evolution (LTE) system, the number of cells that each networking zone is comprised is more, as 510 sub-districts etc., for such networking zone, physical layer identifications is unique as regional identify label in this zone, the probability that repeats between the sub-district is less, and this physical layer identifications is when UE carries out adjacent sub-district synchronous, just can from synchronizing channel, obtain, therefore need not to carry out follow-up Dynamic Broadcast Channel and read, shorten the time delay of handoff.
Be described in detail below in conjunction with embodiment and accompanying drawing.
Fig. 1 is the exemplary process diagram of target cell determining method in the handoff procedure in the embodiment of the invention.As shown in Figure 1, this flow process comprises the steps:
Step 101, source base station is carried at the physical layer identifications of Target cell in the switching command, and the switching command that carries the physical layer identifications of Target cell is sent to UE.
Wherein, the source base station mode of obtaining the physical layer identifications of Target cell can have multiple.For example, after UE measures adjacent sub-district, meeting will comprise adjacent cell physical layer identifiers (being regional identify label) and the measurement report of quality information sends to source base station, and then source base station can obtain the physical layer identifications of determined Target cell from the measurement report that UE reports.And for example: during information interaction before source base station and target BS switch or other the time, target BS can be notified to source base station with the physical layer identifications of self sub-district, source base station obtains the physical layer identifications of the target BS of target BS notice.
Step 102, UE receives the switching command from the physical layer identifications that carries Target cell of source base station, from the synchronizing channel of adjacent sub-district, obtain the physical layer identifications of this neighbour sub-district, and the physical layer identifications that carries in the physical layer identifications that is obtained and switching command determines that this neighbour sub-district is a Target cell when consistent.
In this step, when the physical layer identifications that carries is inconsistent, search for other adjacent sub-district again in physical layer identifications that judgement is obtained and switching command.
More than target cell determining method in the handoff procedure in the embodiment of the invention is described in detail, below again to Target cell in the handoff procedure in the embodiment of the invention really fixed system be described in detail.
Fig. 2 is the Target cell exemplary block diagram of fixed system really in the handoff procedure in the embodiment of the invention.As shown in Figure 2, this system comprises: source base station and UE.
Wherein, source base station is used for the physical layer identifications of Target cell is carried at switching command, and this switching command that carries the physical layer identifications of Target cell is sent to UE.
UE is used to receive the switching command from the physical layer identifications that carries Target cell of source base station, from the synchronizing channel of adjacent sub-district, obtain the physical layer identifications of this neighbour sub-district then, when the physical layer identifications that carries in the physical layer identifications that is obtained and the switching command that is received is consistent, determine that this neighbour sub-district is a Target cell, when the physical layer identifications that carries is inconsistent, search for other adjacent sub-district again in physical layer identifications that obtains and switching command.
Wherein, the physical layer identifications that source base station is carried at the Target cell in the switching command can be that source base station obtains from the measurement report that UE reports, and target BS is notified to source base station in the time of also can being the information interaction before source base station and target BS switch.When the physical layer identifications of Target cell be target BS be notified to source base station the time, this system can further comprise: target BS when being used for the information interaction before switching with source base station, is notified to source base station with the physical layer identifications of self sub-district.
Fig. 3 is a kind of internal structure schematic diagram of source base station in the embodiment of the invention.Shown in the part of the solid line among Fig. 3, this source base station can comprise: message processing module and order sending module.
Wherein, message processing module is used for the physical layer identifications of Target cell is carried at switching command.
The order sending module is used for the above-mentioned switching command that carries the physical layer identifications of Target cell is sent to UE.
Correspondingly, shown in the dotted portion among Fig. 3, this source base station also can comprise: identifier acquisition module, be used to obtain from the target BS physical layer identifications of target BS or from the target BS physical layer identifications of UE, and the target BS physical layer identifications that is obtained is offered message processing module.
Fig. 4 is a kind of internal structure schematic diagram of UE in the embodiment of the invention.As shown in Figure 4, this UE can comprise: order receiver module and Target cell determination module.
Wherein, the order receiver module is used to receive the switching command from the physical layer identifications that carries Target cell of source base station.
The Target cell determination module is used for obtaining from the synchronizing channel of adjacent sub-district the physical layer identifications of corresponding adjacent sub-district, when the physical layer identifications that carries is consistent, determine that this neighbour sub-district is a Target cell in judging the physical layer identifications obtained and ordering the switching command that receiver module received.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is preferred embodiment of the present invention; be not to be used to limit protection scope of the present invention; within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1, target cell determining method in a kind of handoff procedure is characterized in that, this method comprises:
User equipment (UE) receives the switching command of the physical layer identifications that carries Target cell;
From the synchronizing channel of adjacent sub-district, obtain the physical layer identifications of described adjacent sub-district;
When the physical layer identifications that carries is consistent, determine that described adjacent sub-district is a Target cell in the described physical layer identifications that obtains and the switching command that is received.
2, the method for claim 1, it is characterized in that, the switching command that the physical layer identifications of Target cell is carried in described reception further comprises before: target BS is notified to source base station with the physical layer identifications of self sub-district, source base station is carried at described physical layer identifications in the switching command, and described switching command is sent to UE.
3, the method for claim 1, it is characterized in that, the switching command that the physical layer identifications of Target cell is carried in described reception further comprises before: the physical layer identifications of the Target cell that source base station will obtain from the measurement report that UE reports is carried in the switching command, and described switching command is sent to UE.
4, a kind of user equipment (UE) is characterized in that, this UE comprises:
Order receiver module, be used to receive the switching command of the physical layer identifications that carries Target cell;
The Target cell determination module is used for obtaining from the synchronizing channel of adjacent sub-district the physical layer identifications of described adjacent sub-district, when the physical layer identifications that carries in the described physical layer identifications that obtains and switching command is consistent, determines that described adjacent sub-district is a Target cell.
5, a kind of source base station is characterized in that, this source base station comprises:
Message processing module is used for the physical layer identifications of Target cell is carried at switching command;
The order sending module is used for the described switching command that carries the physical layer identifications of Target cell is sent to user equipment (UE).
6, source base station as claimed in claim 5 is characterized in that, this source base station further comprises:
Identifier acquisition module is used to obtain from the target BS physical layer identifications of target BS or from the target BS physical layer identifications of UE, and the target BS physical layer identifications that is obtained is offered message processing module.
7, Target cell fixed system really in a kind of handoff procedure is characterized in that this system comprises:
Source base station is used for the physical layer identifications of Target cell is carried at switching command, and the described switching command that carries the physical layer identifications of Target cell is sent to user equipment (UE);
UE, be used to receive the described switching command that carries the physical layer identifications of Target cell from source base station, from the synchronizing channel of adjacent sub-district, obtain the physical layer identifications of described adjacent sub-district, when the physical layer identifications that carries is consistent, determine that described adjacent sub-district is a Target cell in the described physical layer identifications that obtains and the switching command that is received.
8, system as claimed in claim 7 is characterized in that, this system further comprises: target BS when being used for the information interaction before switching with source base station, is notified to source base station with the physical layer identifications of self sub-district.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011000161A1 (en) * | 2009-07-02 | 2011-01-06 | 华为技术有限公司 | Handover method and device |
| WO2011035735A1 (en) * | 2009-09-27 | 2011-03-31 | 华为技术有限公司 | Method, device and system for processing global cell identities |
| CN102804859A (en) * | 2009-05-29 | 2012-11-28 | 瑞典爱立信有限公司 | Mobile assisted handover in mobile communications networks |
| CN109561475A (en) * | 2017-09-27 | 2019-04-02 | 北京展讯高科通信技术有限公司 | Indicate and obtain method, apparatus, base station and the user equipment of adjacent area timing information |
| CN109792643A (en) * | 2016-09-30 | 2019-05-21 | 瑞典爱立信有限公司 | For mobility method and equipment based on measurement |
| US11419016B2 (en) | 2016-09-30 | 2022-08-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and arrangements for measurement based mobility |
| US11477671B2 (en) | 2016-09-30 | 2022-10-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and arrangements for radio link measurement configuration |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1984489A (en) * | 2006-06-20 | 2007-06-20 | 华为技术有限公司 | Method for fetching adjacent domain system message by user equipment |
| CN1889785B (en) * | 2006-07-27 | 2010-05-12 | 华为技术有限公司 | Method, system and network for processing switch failure in group switching process |
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2007
- 2007-09-28 CN CN2007101515876A patent/CN101400095B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102804859A (en) * | 2009-05-29 | 2012-11-28 | 瑞典爱立信有限公司 | Mobile assisted handover in mobile communications networks |
| CN102804859B (en) * | 2009-05-29 | 2016-01-13 | 瑞典爱立信有限公司 | MAHO in mobile communications network |
| WO2011000161A1 (en) * | 2009-07-02 | 2011-01-06 | 华为技术有限公司 | Handover method and device |
| WO2011035735A1 (en) * | 2009-09-27 | 2011-03-31 | 华为技术有限公司 | Method, device and system for processing global cell identities |
| CN101695163B (en) * | 2009-09-27 | 2012-07-11 | 上海华为技术有限公司 | Global cell identity treatment method, device and system thereof |
| CN109792643A (en) * | 2016-09-30 | 2019-05-21 | 瑞典爱立信有限公司 | For mobility method and equipment based on measurement |
| US11419016B2 (en) | 2016-09-30 | 2022-08-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and arrangements for measurement based mobility |
| US11477671B2 (en) | 2016-09-30 | 2022-10-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and arrangements for radio link measurement configuration |
| CN109561475A (en) * | 2017-09-27 | 2019-04-02 | 北京展讯高科通信技术有限公司 | Indicate and obtain method, apparatus, base station and the user equipment of adjacent area timing information |
| CN109561475B (en) * | 2017-09-27 | 2021-03-19 | 北京紫光展锐通信技术有限公司 | Method, device, base station and user equipment for indicating and acquiring adjacent region time sequence information |
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| CN101400095B (en) | 2011-04-13 |
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