CN101577920B - Cell switching method and device - Google Patents
Cell switching method and device Download PDFInfo
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- CN101577920B CN101577920B CN2008100972633A CN200810097263A CN101577920B CN 101577920 B CN101577920 B CN 101577920B CN 2008100972633 A CN2008100972633 A CN 2008100972633A CN 200810097263 A CN200810097263 A CN 200810097263A CN 101577920 B CN101577920 B CN 101577920B
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000001360 synchronised effect Effects 0.000 claims description 25
- 238000010295 mobile communication Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
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Abstract
The invention discloses a cell switching method, which is used for switching a terminal between a source cell and a target cell and comprises the following steps: a source cell sends a switching request to a target cell, and the switching request carries the bandwidth information of a terminal; the target cell allocates bandwidth for the terminal according to the bandwidth information of the terminal; and the target cell sends a switching request response to the source cell, and the switching request response carries the bandwidth information distributed for the terminal. The invention also discloses a cell switching device. The invention realizes the process of switching the terminal between the cells under the condition that the bandwidth of the terminal is not equal to that of the network side.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of cell switching method and device.
Background technology
The 4th third-generation mobile communication system has very high spectrum efficiency; In the 4th third-generation mobile communication system, mobile subscriber's message transmission rate can reach 100Mbit/s, and the stationary user message transmission rate can reach 1Gbit/s; And; For the system bandwidth of each sub-district is set according to business demand flexibly, the bandwidth of the 4th third-generation mobile communication system can be up to 100MHz, and adaptive-bandwidth.Because the needs of GSM smooth evolution, in the regular hour, the 4th third-generation mobile communication system and 3-G (Generation Three mobile communication system) (for example synchronous code division multiple access system of time-division or 802.16E system etc.) will be compatible or coexist.
The bandwidth of terminal and network side equates in the existing communication system (for example long evolving system), and it inserts at random and adopts cell switching method as shown in Figure 1, and is as shown in Figure 1, comprises the steps:
Step S102; The cell-of-origin command terminal carries out adjacent cell detection process; The relevant information of this cell-of-origin and adjacent sub-district and the resource that reports of measurement report are sent to this terminal, and wherein, the cell-of-origin also can be called Serving cell; Be the sub-district for above-mentioned terminal service, adjacent sub-district is the one or more sub-districts that are different from the cell-of-origin;
Step S104, above-mentioned one or more adjacent sub-district is detected at the terminal, and gives the cell-of-origin with reporting measuring result;
Step S106; According to switching accurate side; The gateway decision switches to Target cell (this Target cell is a sub-district the above-mentioned adjacent sub-district) with this terminal from the cell-of-origin, then handoff request is sent to Target cell in the cell-of-origin, and carries the ID of related service information and Target cell;
Step S108; Target cell is after overload is weighed; Send switching request response to the cell-of-origin, comprise C-RNTI (Cell Radio NetworkTemporary Identifier, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI) and access information etc. in this switching request response;
Step S110, the cell-of-origin issues above-mentioned switching request response to the terminal;
Step S112, switching command is sent to the terminal in the cell-of-origin;
Step S114, cell-of-origin and Target cell carry out information interaction, for example: the contextual information at terminal etc., simultaneously, down-going synchronous is carried out at Target cell in the terminal;
Step S116, after down-going synchronous was accomplished, the access information that the terminal utilizes Target cell to distribute was done to insert at random, accomplishes uplink synchronous and resource bid;
Step S118, Target cell is to the ascending resource information of terminal issuing service and regularly shift to an earlier date (Timing Advance abbreviates TA as) information;
Step S120, the terminal check handover success, and give Target cell with the handover success responsive feedback, carry out communication between terminal and the Target cell.
Above-mentioned implementation step has provided the method that switched the sub-district when terminal equated with the network side bandwidth, but under terminal and the unequal situation of network side bandwidth, how to realize that the switching of minizone does not have corresponding solution.
Summary of the invention
Consider the switching that under terminal and the unequal situation of network side bandwidth, how to realize the minizone that exists in the correlation technique; Do not provide the problem of concrete solution and propose the present invention; For this reason; Main purpose of the present invention is to provide a kind of cell switching method and device, to address the above problem.
According to an aspect of the present invention, a kind of cell switching method is provided, this method is used for the terminal and between cell-of-origin and Target cell, switches.
Cell switching method according to the embodiment of the invention comprises: handoff request is sent to Target cell in the cell-of-origin, and in handoff request the bandwidth information of carried terminal; Target cell is the terminal distribution bandwidth according to the bandwidth information at terminal; Target cell sends switching request response to the cell-of-origin, and in switching request response, carries the bandwidth information into terminal distribution.
Wherein, above-mentioned Target cell is that the operation of terminal distribution bandwidth is specially according to the bandwidth information at terminal: it is wide in advance system bandwidth to be divided into a plurality of subbands that the bandwidth width equates; Target cell is according to the bandwidth information at terminal, with the wide terminal of distributing to of one or more subbands.
Preferably, the terminal is carried out down-going synchronous at Target cell on the bandwidth of its distribution.
Preferably, the access information of carried terminal in the above-mentioned switching request response.
Preferably, the terminal is inserted on the bandwidth of its distribution at Target cell according to access information at random, accomplishes uplink synchronous and resource bid.
According to a further aspect in the invention, a kind of sub-district switching device shifter is provided, this device is used for the terminal and between cell-of-origin and Target cell, switches.
Sub-district switching device shifter according to the embodiment of the invention comprises: the handoff request module, be positioned at the cell-of-origin side, be used for sending handoff request to Target cell, and in handoff request the bandwidth information of carried terminal; Bandwidth allocation module is positioned at the Target cell side, and the bandwidth information at the terminal that is used for carrying according to handoff request is the terminal distribution bandwidth; The switching request response module is positioned at the Target cell side, is used for sending switching request response to the cell-of-origin, and in switching request response, carries the bandwidth information into terminal distribution.
Further, this device also comprises: bandwidth is divided module, is positioned at the Target cell side, be used for system bandwidth divide that the bandwidth width equates for a plurality of subbands wide.
Preferably, above-mentioned bandwidth allocation module is used for the bandwidth information according to the terminal, with the wide terminal of distributing to of one or more subbands.
Further, this device also comprises: the down-going synchronous module, be positioned at end side, and be used for the terminal and carry out down-going synchronous on the bandwidth of its distribution at Target cell.
Preferably, above-mentioned handoff request module also is used for the access information at the switching request response carried terminal.
Further, this device also comprises: the uplink synchronous module, be positioned at end side, and be used for the terminal and insert at random on the bandwidth of its distribution at Target cell according to access information, accomplish uplink synchronous and resource bid.
Through above-mentioned at least one technical scheme of the present invention, solved the problem that how switch in the minizone at the terminal under terminal and the unequal situation of network side bandwidth, realized the handoff procedure of the little bandwidth terminals of large bandwidth system.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the cell switching method of correlation technique;
Fig. 2 is the flow chart according to the cell switching method of the inventive method embodiment;
Fig. 3 is the detailed process flow chart according to the cell switching method of the inventive method embodiment;
Fig. 4 is the sketch map according to the sub-district switching device shifter of the embodiment of the invention;
Fig. 5 is the detailed structure sketch map according to the sub-district switching device shifter of the embodiment of the invention.
Embodiment
To combine accompanying drawing to describe the present invention in detail below.
The bandwidth of considering the 4th third-generation mobile communication system is bigger; But general terminal bandwidth is less relatively; In this case, switch if the minizone will be carried out in the terminal, existing sub-district handover scheme can cause the increase of handover delay; Based on this, the present invention proposes to the handover scheme of the terminal under terminal and the unequal situation of network side bandwidth in the minizone.
Method embodiment
According to the embodiment of the invention, a kind of cell switching method is provided, be used for the terminal and between cell-of-origin and Target cell, switch.
Fig. 2 is the flow chart according to the cell switching method of the embodiment of the invention, and is as shown in Figure 2, and this method may further comprise the steps:
Step S202, handoff request is sent to Target cell in the cell-of-origin, and in handoff request the bandwidth information of carried terminal;
Step S204, Target cell is the terminal distribution bandwidth according to the bandwidth information at terminal;
Step S206, Target cell sends switching request response to the cell-of-origin, and in switching request response, carries the bandwidth information into terminal distribution.
Through the technical scheme that the embodiment of the invention provides, realized the handoff procedure of the little bandwidth terminals of large bandwidth system.
Wherein, in step S204, it is wide in advance system bandwidth to be divided into a plurality of subbands, and wherein, the wide bandwidth width of each subband equates that correspondingly, Target cell is according to the bandwidth information at this terminal, with the wide terminal of distributing to of one or more subbands.
Preferably, after step S206, the terminal is carried out down-going synchronous at Target cell on the bandwidth of its distribution.
Preferably, in step S202, go back the access information of carried terminal in the switching request response; Correspondingly; After step S206, this terminal is inserted on the bandwidth of its distribution at Target cell according to this access information at random, accomplishes uplink synchronous and resource bid.
Fig. 3 is the detailed process flow chart according to the cell switching method of the inventive method embodiment, and is as shown in Figure 3, and this method may further comprise the steps:
Step S302; The cell-of-origin command terminal carries out adjacent cell detection process; The relevant information of this cell-of-origin and adjacent sub-district and the resource that reports of measurement report are sent to this terminal, and wherein, the cell-of-origin also can be called Serving cell; Be the sub-district for above-mentioned terminal service, adjacent sub-district is the one or more sub-districts that are different from the cell-of-origin;
Step S304, above-mentioned one or more adjacent sub-district is detected at the terminal, and gives the cell-of-origin with reporting measuring result;
Step S306; According to switching accurate side; The gateway decision switches to Target cell with this terminal from the cell-of-origin, and then handoff request is sent to Target cell in the cell-of-origin, carries the ID of related service information, Target cell and the bandwidth information at terminal etc. in this handoff request;
Step S308, Target cell send switching request response to the cell-of-origin after overload is weighed, comprise the bandwidth information at C-RNTI, access information and above-mentioned terminal etc. in this switching request response;
Step S310, the cell-of-origin issues above-mentioned switching request response to the terminal;
Step S312, switching command is sent to the terminal in the cell-of-origin;
Step S314, cell-of-origin and Target cell carry out information interaction, for example: the contextual information at terminal etc., simultaneously, the terminal is carried out down-going synchronous at Target cell under the bandwidth of its distribution;
Step S316, after down-going synchronous was accomplished, the terminal did to insert at random completion uplink synchronous and resource bid at Target cell for utilizing above-mentioned access information under the bandwidth of its distribution;
Step S318, Target cell is to the ascending resource information and TA (regularly in advance) information of terminal issuing service;
Step S320, the terminal check handover success, and give Target cell with the handover success responsive feedback, carry out communication between terminal and the Target cell.
Can find out that through top description the handoff procedure support terminal of the little bandwidth terminals of large bandwidth system that the embodiment of the invention provides is in the arbitrarily switching of frequency range, and can significantly reduce handover delay that frequency range can more rational equilibrium shares out the work.
Device embodiment
Fig. 4 shows the sub-district switching device shifter sketch map according to the embodiment of the invention, and this device mainly comprises:
Switching request response module 30 is positioned at the Target cell side, can be connected to bandwidth allocation module 20, is used for sending switching request response to the cell-of-origin, and in switching request response, carries bandwidth allocation module 20 and be the bandwidth information of terminal distribution.
Through said apparatus, can realize the handoff procedure of the little bandwidth terminals of large bandwidth system.
Preferably, as shown in Figure 5, the device of the embodiment of the invention comprises that also bandwidth divides module 40, is positioned at the Target cell side, and it is wide to be used for that system bandwidth is divided into a plurality of subbands, and bandwidth is divided module 40 and is connected to bandwidth allocation module 20.
Preferably, in end side, the device that the embodiment of the invention provides also comprises down-going synchronous module 50, is used for the terminal and carries out down-going synchronous at Target cell on the bandwidth of its distribution.
Preferably; Handoff request module 10 also is used for the access information at the switching request response carried terminal; At this moment, in end side, the device that the embodiment of the invention provides also comprises uplink synchronous module 60; Be used for the terminal and insert at random on the bandwidth of its distribution at Target cell, accomplish uplink synchronous and resource bid according to access information.
As stated; By means of cell switching method provided by the invention and/or device, realized the handoff procedure of the little bandwidth terminals of large bandwidth system, its support terminal is the switching of frequency range arbitrarily in system; Can significantly reduce handover delay, and the equilibrium frequency range that shares out the work reasonably.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (8)
1. a cell switching method is used for the terminal and between cell-of-origin and Target cell, switches, and it is characterized in that said method comprises:
Handoff request is sent to said Target cell in said cell-of-origin, and in said handoff request, carries the bandwidth information at said terminal;
Said Target cell is said terminal distribution bandwidth according to the bandwidth information at said terminal;
Said Target cell sends switching request response to said cell-of-origin, and in said switching request response, carries the bandwidth information into said terminal distribution;
Wherein, said Target cell is that the operation of said terminal distribution bandwidth is specially according to the bandwidth information at said terminal:
It is wide in advance system bandwidth to be divided into a plurality of subbands that the bandwidth width equates;
Said Target cell is according to the bandwidth information at said terminal, distributes to said terminal with one or more subbands are wide.
2. method according to claim 1 is characterized in that, said method also comprises:
Said terminal is carried out down-going synchronous at said Target cell on the bandwidth of its distribution.
3. method according to claim 1 is characterized in that, carries the access information at said terminal in the said switching request response.
4. method according to claim 3 is characterized in that, said method also comprises:
Said terminal is inserted on the bandwidth of its distribution at said Target cell according to said access information at random, accomplishes uplink synchronous and resource bid.
5. a sub-district switching device shifter is used for the terminal and between cell-of-origin and Target cell, switches, and it is characterized in that, comprising:
The handoff request module is positioned at the cell-of-origin side, is used for sending handoff request to said Target cell, and in said handoff request, carries the bandwidth information at said terminal;
Bandwidth is divided module, is positioned at the Target cell side, and it is wide to be used for that system bandwidth is divided into a plurality of subbands that the bandwidth width equates;
Bandwidth allocation module; Be positioned at the Target cell side; The bandwidth information at the said terminal that is used for carrying according to said handoff request is said terminal distribution bandwidth; Be specially:, said bandwidth divided one or more subbands of Module Division are wide distributes to said terminal according to the bandwidth information at said terminal;
The switching request response module is positioned at the Target cell side, is used for sending switching request response to said cell-of-origin, and in said switching request response, carries the bandwidth information into said terminal distribution.
6. device according to claim 5 is characterized in that said device also comprises the down-going synchronous module, is positioned at end side, is used for said terminal and carries out down-going synchronous at said Target cell on the bandwidth of its distribution.
7. device according to claim 5 is characterized in that said handoff request module also is used for carrying in said switching request response the access information at said terminal.
8. device according to claim 7; It is characterized in that said device also comprises the uplink synchronous module, is positioned at end side; Be used for said terminal and insert at random on the bandwidth of its distribution at said Target cell, accomplish uplink synchronous and resource bid according to said access information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2008100972633A CN101577920B (en) | 2008-05-06 | 2008-05-06 | Cell switching method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100972633A CN101577920B (en) | 2008-05-06 | 2008-05-06 | Cell switching method and device |
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| CN101577920A CN101577920A (en) | 2009-11-11 |
| CN101577920B true CN101577920B (en) | 2012-05-09 |
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| CN2008100972633A Expired - Fee Related CN101577920B (en) | 2008-05-06 | 2008-05-06 | Cell switching method and device |
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| CN103249114B (en) * | 2013-04-03 | 2016-03-23 | 大唐移动通信设备有限公司 | Group's Intranet strange land cut-in method and system |
| CN107690173B (en) * | 2016-08-05 | 2020-01-14 | 电信科学技术研究院 | A random access method and device |
| WO2019095257A1 (en) * | 2017-11-17 | 2019-05-23 | 上海诺基亚贝尔股份有限公司 | Communication method and communication device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1972516A (en) * | 2006-11-30 | 2007-05-30 | 中兴通讯股份有限公司 | A rapid switching method between a number of mobile multimedia broadcasting networks |
| CN101132640A (en) * | 2006-08-23 | 2008-02-27 | 日本电气株式会社 | Mobile communication system, core network node selection method, base station and mobile station |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101132640A (en) * | 2006-08-23 | 2008-02-27 | 日本电气株式会社 | Mobile communication system, core network node selection method, base station and mobile station |
| CN1972516A (en) * | 2006-11-30 | 2007-05-30 | 中兴通讯股份有限公司 | A rapid switching method between a number of mobile multimedia broadcasting networks |
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Effective date of registration: 20180102 Address after: 221000 Jiangsu province Xuzhou Industrial Park Xu Jia fast corridor North Patentee after: JIANGSU NOON CROP SCIENCE CO., LTD. Address before: 518057 Nanshan District science and Technology Industrial Park, Guangdong high tech Industrial Park, ZTE building Patentee before: ZTE Corporation |
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Granted publication date: 20120509 Termination date: 20190506 |