CN1429031A - Switching method between frequencies - Google Patents
Switching method between frequencies Download PDFInfo
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- CN1429031A CN1429031A CN 01144931 CN01144931A CN1429031A CN 1429031 A CN1429031 A CN 1429031A CN 01144931 CN01144931 CN 01144931 CN 01144931 A CN01144931 A CN 01144931A CN 1429031 A CN1429031 A CN 1429031A
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Abstract
A method of switching between frequencies includes the follows: Using the Vser's equipment to detect signal quality of original small area, if detected quality of signal is lower than predefined threshold the measurnig result will be reported to network and the network will define to apply gating technique of special physical control channel for carrying on measurement between frequencies and also to dispose transmission format set, UE and DPCCH gate control parameter at base station side according to the reported rsult; UE and network side will carry on gate control according to the gate control parameter, UE will carry on also quality measurement of signal and synchronization for adjacent frequency small area by using gap created with DPCCH gate control technique and to report measuring result to network; the network will judge whether the switching between frequencies is ncessary or not according to measured result.
Description
Technical field
The present invention relates to subscriber equipment (UE) changing method between different base station, especially switching method between frequencies in the mobile communication system.
Background technology
In mobile communication system; UE is at the switching problem that can relate to usually to the process that target BS moves from home base stations between the base station; because the frequency that UE used when connecting with home base stations or target BS may be different, therefore this switching is switched between coming down to frequently.Handover scheme utilizes compact model to finish between existing frequency, concrete grammar is: when the signal quality that monitors original sub-district as UE is lower than certain predefine thresholding, measurement result is reported network, the network based result who reports, compressed-mode parameter by signaling configuration UE and base station side also starts compact model, the synchronous and signal quality measured of adjacent sub-district frequently carried out in the gap that UE produces by compact model, and measurement result reported network, network based reporting measurement result determines whether to carry out to switch between frequency, when needs switch, UE switches by signaling, after UE receives switching command, getting in touch of the cut-out of the moment of appointment and original sub-district, connect with alien-frequency district.The key of switching is that the synchronous and measurement of adjacent sub-district is frequently carried out in the gap that utilizes compact model to produce between frequency.Because the gap that compact model produces is bigger, may cause the more power control bit information of losing, cause the data transmission link degradation, and in switching process between frequencies, signal quality itself is variation just, need prevent that link-quality from reducing by accurate power controls, therefore existing switching method between frequencies is unfavorable for preventing that link-quality from reducing.
Summary of the invention
The object of the present invention is to provide a kind of switching method between frequencies that helps preventing the link-quality reduction.
For achieving the above object, switching method between frequencies provided by the invention comprises: the signal quality of the original sub-district of (1) subscriber equipment (UE) monitoring when the signal quality that monitors is lower than the predefine thresholding, reports network with measurement result;
(2) the network based result who reports determines to adopt Dedicated Physical Control Channel (DPCCH) gating technology to carry out inter-frequency measurement, and the DPCCH gate parameter of configuration UE and base station side, and configuring transmission format collection (TFS);
(3) UE and network side carry out gate according to the gate parameter, and the synchronous and signal quality measured of adjacent sub-district frequently carried out in the gap that UE utilizes the DPCCH gating technology to produce, and measurement result is reported network;
(4) network based measurement result judges whether to carry out to switch between frequency, and if desired, notice UE switches;
(5) UE finishes switching between frequency according to switching notice in the moment of appointment.
Carrying out the neighbour in the above-mentioned steps (3) finishes by slot synchronization, frame synchronization and code group identification, scrambler identification the sub-district frequently synchronously.
Carry out signal quality measured in the above-mentioned steps (3) for carrying out the chip energy of Common Pilot Channel received signal code power (CPICH RSCP) or Common Pilot Channel and the measurement of the ratio (CPICH Ec/NO) of in-band noise power density.
Above-mentioned steps (3) also comprises: the data to packet domain (PS) cushion, and wait for after finish in the gate gap sending again, and the data of circuit domain (CS) are abandoned.
Foregoing can also be used following content to replace: the data to packet domain (PS) cushion, and wait for after finish in the gate gap sending again, for the data of circuit domain (CS), send and satisfy the data that TFS requires.
Above-mentioned steps (3) also comprises: during the gate gap, read through-put power control (TPC) information among the DPCCH, and utilize this information to keep the continuous of power control.
Because the present invention adopts DPCCH gate gap to carry out inter-frequency measurement, promptly can carry out the synchronous and measurement in sub-district, thereby switch between finishing frequently, so both made full use of the gate gap, improved the resource utilization of system, can shorten the transmission intercal of TPC again, therefore can prevent the reduction of Zone switched interior original link signal quality.
Description of drawings
Fig. 1 is the embodiment flow chart of the method for the invention;
Fig. 2 is gate gap figure;
Fig. 3 is a hand off signaling flow chart between the frequency of using when of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
The DPCCH gating technology is applicable to the up-downgoing data transmission link, when not having data to send, stops to send DPCCH, when data need send, recovers the transmission of DPCCH and DPDCH (Dedicated Physical Control Channel and Dedicated Physical Data Channel) again.Because gating technology adopts such scheme, compares with compact model, the gate gap that it produces in a Frame is discontinuous, makes that the gate gap is less, if adopt gating technology to carry out switching between frequency, can make the TPC information of losing less.Essence of the present invention is that the synchronous and measurement of inter-frequency cell is carried out in the gap that UE produces by the DPCCH gating technology, and it can keep the continuity of power control when the physical frame gap is provided, improve the performance of switching between frequency.
Fig. 1 is the embodiment flow chart of the inventive method.Implement the present invention according to Fig. 1, the 1st step, the signal quality of the original sub-district of user equipment monitors, and the signal quality that monitors judged, when the signal quality that monitors is lower than the predefine thresholding, measurement result is reported network; The 2nd step, the network based result who reports, determine to adopt Dedicated Physical Control Channel (DPCCH) gating technology to carry out inter-frequency measurement, and the DPCCH gate parameter of configuration UE and base station side, and configuring transmission format collection (TFS), finish by slot synchronization, frame synchronization and code group identification, scrambler identification synchronously described neighbour's frequency sub-district of carrying out.Described carry out signal quality measured for carrying out the chip energy of Common Pilot Channel received signal code power (CPICH RSCP) or Common Pilot Channel and the measurement of the ratio (CPICH Ec/NO) of in-band noise power density; In the 3rd step, UE and network side carry out gate according to the gate parameter, and the synchronous and signal quality measured of adjacent sub-district frequently carried out in the gap that UE utilizes the DPCCH gating technology to produce, and measurement result is reported network.During the DPCCH gate gap in this step, the DPDCH for gate gap correspondence handles respectively according to data type, and the data in PS territory are cushioned, and waits for after the gap finishes sending again; And for the CS numeric field data, data are abandoned or sending part divided data only, but the size that sends data satisfies the requirement of TFS, because TFS is limited; During the gate gap in this step, also to read the TPC information among the DPCCH, and utilize this information to keep the continuous of power control, prevent the further variation of original link signal quality; In the 4th step, network based measurement result judges whether to carry out to switch between frequency, and if desired, notice UE switches; In the 5th step, UE finishes switching between frequency according to switching notice in the moment of appointment.
Compare with compact model, because therefore the gap that DPCCH gate gap produces less than compact model can use continuous several gates gap when the present invention specifically uses, altogether with reference to figure 2.Among the figure, S1 is the gate gap to S6, and narrow post is DPCCH partly, can S1 is synchronous as adjacent sub-district to S6 in the reality, and follow-up gap is used for measuring.
Be a concrete application example of the present invention below, with reference to figure 3.Shown in the figure, when the signal quality that UE monitors original sub-district is lower than certain predefine thresholding, the measurement result of original sub-district is reported the serving BS controller (SRNC) of network by measurement report signaling (Measurement Report), SRNC is according to the result who reports, determine to adopt the DPCCH gating technology to carry out inter-frequency measurement, send radio link reconfiguration demand signalling and radio bearer reconfiguration request signaling (Radio Link ReconfigurationRequest and Radio Bearer Recongfiguration Request) the DPCCH gate parameter of configurating base station side and UE side respectively to former cell base station (Home BS) and UE respectively then, and dispose limited TFS, after parameter configuration finished, Home BS and UE reshuffled the message that the signaling that finishes (RadioLink Reconfiguration Complete and Radio Bearer RecongfigurationComplete) finishes to the configuration of SRNC feedback parameter respectively by sending finish signaling and radio bearer of radio link reconfiguration.UE and network side are being specified constantly and startup DPCCH gating technology on the specific radio frames according to configuration parameter, the search of adjacent sub-district is frequently carried out synchronously with signal quality measured in the gap that UE produces by the DPCCH gating technology, during the gap, the advanced row buffering of high-rise data to the PS territory is waited for after the gap finishes sending data again; For the CS numeric field data, high-rise data being abandoned or sending part divided data only, the size that sends the CS numeric field data satisfies the requirement of limited TFS.UE is after finishing adjacent cell measurement frequently, with the neighbour frequently cell measurement results by reporting network by measurement report signaling (Measurement Report), be SRNC, SRNC judges whether that according to the reporting measurement result needs carry out switching between frequency, if desired, set up the link that demand signalling (Radio Link SetupRequest) is set up SRNC and Target cell by sending Radio Link to target BS (Target BS), sending physical channel reconfiguration request signaling (Physical Channel Reconfiguration Request) notice UE to UE then carries out switching between frequency, after UE receives switching command, getting in touch of the cut-out of the moment of appointment and original sub-district, connect with alien-frequency district.Original sub-district, be that Home BS lost efficacy indication signaling (Radio Link Failure Indication) to the inefficacy of SRNC reporting links by Radio Link, SRNC deletes original sub-district link according to the link failure indication by send Radio Link removal request signaling (Radio LinkDelete Request) to Home BS.After UE and Target cell are set up link, reshuffle by physical channel again and finish signaling (Physical Channel ReconfigurationComplete) and report to switch to SRNC and finish.
Claims (6)
1, a kind of switching method between frequencies comprises:
(1) signal quality of the original sub-district of subscriber equipment (UE) monitoring when the signal quality that monitors is lower than the predefine thresholding, reports network with measurement result;
(2) the network based result who reports determines to adopt Dedicated Physical Control Channel (DPCCH) gating technology to carry out inter-frequency measurement, and the DPCCH gate parameter of configuration UE and base station side, and configuring transmission format collection (TFS);
(3) UE and network side carry out gate according to the gate parameter, and the synchronous and signal quality measured of adjacent sub-district frequently carried out in the gap that UE utilizes the DPCCH gating technology to produce, and measurement result is reported network;
(4) network based measurement result judges whether to carry out to switch between frequency, and if desired, notice UE switches;
(5) UE finishes switching between frequency according to switching notice in the moment of appointment.
2, switching method between frequencies according to claim 1 is characterized in that carrying out in the step (3) neighbour and finishes by slot synchronization, frame synchronization and code group identification, scrambler identification synchronously the sub-district frequently.
3, switching method between frequencies according to claim 1 is characterized in that carrying out in the step (3) signal quality measured for carrying out the chip energy of Common Pilot Channel received signal code power (CPICH RSCP) or Common Pilot Channel and the measurement of the ratio (CPICH Ec/NO) of in-band noise power density.
4, switching method between frequencies according to claim 1, it is characterized in that described step (3) also comprises: the data to packet domain (PS) cushion, and wait for after finish in the gate gap sending again, and the data of circuit domain (CS) are abandoned.
5, the changing method between frequency according to claim 1, it is characterized in that described step (3) also comprises: the data to packet domain (PS) cushion, wait for after finish in the gate gap sending again,, send and satisfy the data that TFS requires for the data of circuit domain (CS).
6, according to claim 1,4 or 5 described switching method between frequencies, it is characterized in that described step (3) also comprises: during the gate gap, read through-put power control (TPC) information among the DPCCH, and utilize this information to keep the continuous of power control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144931 CN1184834C (en) | 2001-12-24 | 2001-12-24 | Switching method between frequencies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144931 CN1184834C (en) | 2001-12-24 | 2001-12-24 | Switching method between frequencies |
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| CN1429031A true CN1429031A (en) | 2003-07-09 |
| CN1184834C CN1184834C (en) | 2005-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01144931 Expired - Fee Related CN1184834C (en) | 2001-12-24 | 2001-12-24 | Switching method between frequencies |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007128226A1 (en) * | 2006-04-29 | 2007-11-15 | Huawei Technologies Co., Ltd. | A method and ue for measuring the adjacent cell |
| WO2010048851A1 (en) * | 2008-10-31 | 2010-05-06 | 华为技术有限公司 | Mobility measurement method and user equipment, evolution network base station |
| CN101715221A (en) * | 2004-12-14 | 2010-05-26 | 富士通株式会社 | Wireless communications system, base station, and mobile station |
| CN102065452A (en) * | 2009-11-12 | 2011-05-18 | 中兴通讯股份有限公司 | Intersystem measuring method, device and system |
| CN101390310B (en) * | 2005-12-28 | 2012-06-06 | 株式会社Ntt都科摩 | Mobile station, base station and method of controlling measurement of peripheral cell |
| CN102572975A (en) * | 2010-12-31 | 2012-07-11 | 中国移动通信集团公司 | Method, system and equipment for switching operating frequency of cells |
| CN102098690B (en) * | 2005-06-15 | 2013-08-21 | 日本电气株式会社 | Method for estimating reception quality of communication area, apparatus thereof, and program thereof |
| CN103716813B (en) * | 2012-09-28 | 2017-12-05 | 华为技术有限公司 | Link quality information processing method and base station |
-
2001
- 2001-12-24 CN CN 01144931 patent/CN1184834C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102176783B (en) * | 2004-12-14 | 2013-01-02 | 富士通株式会社 | Wireless communications system, base station, and mobile station |
| CN101715221B (en) * | 2004-12-14 | 2015-07-08 | 富士通株式会社 | Wireless communications system, base station, and mobile station |
| CN101715221A (en) * | 2004-12-14 | 2010-05-26 | 富士通株式会社 | Wireless communications system, base station, and mobile station |
| CN101867952B (en) * | 2004-12-14 | 2012-04-11 | 富士通株式会社 | Wireless communications system, base station, and mobile station |
| CN101120524B (en) * | 2005-06-15 | 2014-09-24 | 日本电气株式会社 | Method for estimating reception quality of communication area and apparatus thereof |
| CN102098690B (en) * | 2005-06-15 | 2013-08-21 | 日本电气株式会社 | Method for estimating reception quality of communication area, apparatus thereof, and program thereof |
| CN101390310B (en) * | 2005-12-28 | 2012-06-06 | 株式会社Ntt都科摩 | Mobile station, base station and method of controlling measurement of peripheral cell |
| WO2007128226A1 (en) * | 2006-04-29 | 2007-11-15 | Huawei Technologies Co., Ltd. | A method and ue for measuring the adjacent cell |
| CN101730135A (en) * | 2008-10-31 | 2010-06-09 | 华为技术有限公司 | Mobile management methods, user equipment and evolved network basestation |
| CN101730135B (en) * | 2008-10-31 | 2013-08-07 | 华为技术有限公司 | Mobile management methods, user equipment and evolved network basestation |
| WO2010048851A1 (en) * | 2008-10-31 | 2010-05-06 | 华为技术有限公司 | Mobility measurement method and user equipment, evolution network base station |
| CN102065452A (en) * | 2009-11-12 | 2011-05-18 | 中兴通讯股份有限公司 | Intersystem measuring method, device and system |
| CN102065452B (en) * | 2009-11-12 | 2015-08-12 | 中兴通讯股份有限公司 | Method of measurement, device and system between system |
| CN102572975A (en) * | 2010-12-31 | 2012-07-11 | 中国移动通信集团公司 | Method, system and equipment for switching operating frequency of cells |
| CN103716813B (en) * | 2012-09-28 | 2017-12-05 | 华为技术有限公司 | Link quality information processing method and base station |
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| Publication number | Publication date |
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| CN1184834C (en) | 2005-01-12 |
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Granted publication date: 20050112 Termination date: 20161224 |