CN100364361C - Method for controlling and recognizing aim cell in transient measuring report - Google Patents
Method for controlling and recognizing aim cell in transient measuring report Download PDFInfo
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- CN100364361C CN100364361C CNB2004100878332A CN200410087833A CN100364361C CN 100364361 C CN100364361 C CN 100364361C CN B2004100878332 A CNB2004100878332 A CN B2004100878332A CN 200410087833 A CN200410087833 A CN 200410087833A CN 100364361 C CN100364361 C CN 100364361C
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Abstract
The present invention relates to a control and identifying method for target cells in a transient measuring report, which is applied to the switching process from a WCDMA cell to a GSM cell. The method comprises steps: A. a radio network controller (RNC) transmits a measuring and control message to user equipment (UE), and identifying codes of cells of different systems, which are not allocated, are allocated to a newly added GSM neighboring area; B. according to the transmitted measuring and control message, the UE measures the signals of the cells of different systems and reports a measurement report; C. the RNC selects target cells according to the reported measurement report and in combination with the switching decision rule. When the method of the present invention is used for switching among different systems, the target cells can be accurately selected, and the efficiency of midair interface messages can be effectively increased.
Description
Technical field
The different system that the present invention relates in the wireless communication field is switched, and refers to a kind of method of controlling and discern Target cell the transient measuring report when the WCDMA sub-district switches to the GSM sub-district especially.
Background technology
Finish switching from the WCDMA sub-district to the GSM sub-district, RNC (radio network controller) at first needs to send the isosystem measurement control messages to UE (subscriber equipment), which contiguous GSM sub-district notice UE his resident sub-district at present exists, RNC numbers contiguous different system cell in measuring control, and this numbering is called different system cell identification code (Inter-RAT cell id).Agreement regulation Inter-RAT cellid span 0-31.But agreement is the clear and definite concrete grammar of numbering not, in the prior art, does not consider the former measurement that pre-exists when new sending measuring Control Allocation Inter-RAT cellid.Original measurement control is revised in new sending measuring control, because being defined in to measure, 3GPP 25.331 controls not response of UE when issuing successfully, if the measurement control messages is incorrect or UE does not support, UE is return measurement control failed message, if control is correctly accepted by UE, UE measures and reporting measurement reports according to measuring control.RNC does not know in the of short duration following period of time of sending measurement control whether new measurement control is successful, generally waits for a period of time, and looks at whether to have the measurement control messages of failure to return like this.
Inter-RAT cell id also can not carry to UE in measuring control messages, if RNC does not have clear and definite notice UE Inter-RAT cell id in measurement control, UE (comprising different system adjacent area, with frequency and alien-frequency district) in safeguarding cell information tabulation (CELL_INFO_LIST) tabulation searches idle successively Inter-RAT cell id according to ascending order and represents the GSM adjacent area.Different system adjacent area is used Intra-Freq cell id, Inter-Freq cell id sign with Inter-RATcell id sign respectively with frequency, alien frequencies adjacent area.
For the measurement report of different system adjacent area, the agreement regulation does not report BSIC at the sub-district of Verified BSIC (Verified Basetransceiver Station Identity Code, definite BCC), only reports Inter-RAT cell id.At Non Verified BSIC (uncertain BCC), report ARFCN (Absolute Radio Frequency Channel Number, absolute radio channel number).
Wherein, BSIC, the BCCH of Inter-RAT cell id and GSM adjacent area (Broadcast ControlChannel, Broadcast Control Channel) ARFCN binding.Promptly send to measure in the control messages and comprise BSIC, BCCH ARCFN.
Measuring has three kinds of orders in the control messages: set up, revise, discharge.
UE measures according to the isosystem measurement control messages that issues, according to the reporting measurement reports that requires of measuring control.In the report of GSM isosystem measurement, the sub-district for UE has detected BSIC comprises Inter-RAT cell id in the measurement report.RNC can find according to Inter-RAT cell id and want the target GSM sub-district of switching.
As previously mentioned, because RNC does not know in the of short duration following period of time of sending measurement control whether new measurement control is successful, if the Inter-RAT cell id of the Inter-RAT cell id of the contiguous GSM of new measurement control sub-district and the old contiguous GSM of measurement control sub-district exists overlapping, the measurement report of in RNC waits for this section transient state time, having returned, if the Inter-RAT cell id in the measurement report that reports all is overlapping Inter-RAT cell id in the new and old measurement control, it is measurement report at which sub-district that RNC is difficult to distinguish lap.Be exemplified below:
As shown in Figure 1: CELL1 (W) and CELL2 (W) are homogeneous frequency adjacent areas;
The GSM adjacent area of CELL1 (W) is CELL1 (G), CELL2 (G), CELL3 (G), CELL4 (G), CELL5 (G);
The GSM adjacent area of CELL2 (W) is CELL4 (G), CELL5 (G), CELL6 (G), CELL7 (G), CELL8 (G).
The current best cell of UE is CELL1 (W), supposes that the measurement control of the different system that issues is that Inter-RAT cell id is respectively 0,1,2,3,4;
UE moves to CELL2 (W), revise isosystem measurement (the Inter-RAT cellid of CELL4 (G), CELL5 (G) that is the GSM adjacent area of CELL1 (W), CELL2 (W) simultaneously is constant) by measuring control, it is respectively 3,4,0,1,2 that Inter-RAT cell id is controlled in the measurement of suppose the different system that issues;
When UE moves to CELL2 (W), the moment that isosystem measurement control has just issued, receive the measurement report that UE reports, for example the sub-district by switch decision Inter-RAT cell id=0 is the Target cell that switches.According to measurement control at CELL1 (W), the sub-district of Inter-RAT cell id=0 should be CELL1 (G), according to measurement control at CELL2 (W), the sub-district of Inter-RAT cell id=0 should be CELL6 (G), if new measurement control is not success also, should select CELL1 (G); If new measurement has been controlled successfully, should select CELL6 (G).But when transient state, RNC does not know that this measurement report is to report according to new measurement control, still reports according to old measurement control.Obviously at this moment Target cell is selected mistake easily.
Summary of the invention
The invention provides the method for GSM Target cell in a kind of control and the identification transient measuring report, can make RNC select Target cell exactly according to transient measuring report.
The inventive method is applied to comprise the following steps: from the handoff procedure of WCDMA sub-district to the GSM sub-district
When A, radio network controller (RNC) give subscriber equipment (UE) sending measuring control messages, select unappropriated Inter-RAT cell id to distribute to the newly-increased GSM adjacent area of UE;
B, UE carry out different system cell signal measurement and reporting measurement reports according to the measurement control messages that issues;
The measurement report that C, RNC basis reports is in conjunction with switch decision criterion select target sub-district.
According to said method of the present invention, in the described steps A if the number of unappropriated Inter-RAT cell id more than or equal to the newly-increased GSM adjacent area number of UE, is then carried out the following step:
RNC carries out to measure to control and revises order, and what carry in the last measurement of the deletion control messages is not the GSM adjacent area of UE current area, and adds the newly-increased GSM adjacent area of UE, and amended measurement control messages is handed down to UE.
According to said method of the present invention, in the described steps A if the number of unappropriated Inter-RAT cell id less than the newly-increased GSM adjacent area number of UE, is then carried out the following step:
RNC uses and measures the control release command, the last control messages of measuring of deletion; Use and measure control foundation order, set up new measurement control messages and be handed down to UE, and make two measurement identification code (measuring ID) differences of measuring control messages.
According to said method of the present invention, during the new measurement control messages of described foundation,, set up this new measurement control messages with this d/d measurement ID if application can discharge the measurement ID of a low priority less than new measurement ID.
According to said method of the present invention, also comprise the step of the measurement control of the newly-built d/d low priority of measurement ID that uses old measurement control messages.
When adopting method of the present invention to switch, can select Target cell like clockwork, and can effectively improve the efficient of air-interface information in different system.
Description of drawings
Fig. 1 is the proximity relations schematic diagram of WCDMA and GSM sub-district;
Fig. 2 is the inventive method flow chart.
Embodiment
Referring to Fig. 2, when RNC issued new measurement control messages to UE, whether the number of judging unappropriated Inter-RATcell id was more than or equal to the newly-increased GSM adjacent area number of UE current area.As shown in Figure 1, when UE moved to CELL2 (W) from CELL1 (W), change had taken place in its different system adjacent area, at this moment CELL1 (G), CELL2 (G), the GSM adjacent area of CELL3 (G) for deleting; CELL4 (G), CELL5 (G) GSM adjacent area for keeping; CELL6 (G), CELL7 (G), the GSM adjacent area of CELL8 (G) for increasing newly.We suppose CELL1 (G), CELL2 (G), the Inter-RAT cell id of CELL3 (G) is respectively 0,1,2, CELL4 (G), the Inter-RAT cell id of CELL5 (G) is respectively 3,4, unappropriated Inter-RAT cell id 5～31 (stipulates according to agreement, the span of Inter-RAT cellid is 0～31), have 27, and the newly-increased GSM adjacent area of UE is CELL6 (G), CELL7 (G), totally 3 of CELL8 (G), obviously, the number of unappropriated Inter-RAT cell id is greater than the newly-increased GSM adjacent area number of UE at this moment, can from remaining 27 Inter-RAT cell id, choose 3 arbitrarily and distribute to newly-increased GSM adjacent area, carry out then and measure control modification order, deleting what carry in the old measurement control messages (promptly last measure control messages) is not the GSM adjacent area (CELL1 (G) of UE current area, CELL2 (G) and CELL3 (G)), and add the newly-increased GSM adjacent area (CELL6 (G) of UE, CELL7 (G), CELL8 (G)); Amended measurement control messages is handed down to UE, and UE carries out different system cell signal measurement and reporting measurement reports according to the measurement control messages that issues; The measurement report that the RNC basis reports is in conjunction with switch decision criterion select target sub-district.
In the last example, if the newly-increased adjacent area number of UE surpasses 27, then can't to each newly-increased adjacent area distribute one with delete the different unique Inter-RAT cell id in adjacent area, therefore, RNC uses and measures the control release command, deletes old measurement control messages (the promptly last control messages of measuring); Use and measure control foundation order, set up new measurement control messages and be handed down to UE, and make the measurement identification code difference of new and old measurement control messages; UE carries out different system cell signal measurement and reporting measurement reports according to the measurement control messages that issues; The measurement report that the RNC basis reports is in conjunction with switch decision criterion select target sub-district.Measure ID and Inter-RAT cell id owing to exist in the measurement report, so just allow new measurement control and the old measurement Inter-RAT cell id in controlling to be assigned lap, the measurement report that reports is distinguished with measuring ID earlier, distinguish with Inter-RAT cell id again, so if Inter-RAT cell id is identical, measure the ID difference, also can identify different districts.
According to 3GPP agreement regulation, there are 16 to measure ID, because the measurement ID of measurement ID that requirement increases newly and release is different, may apply for less than new measurement ID, can measure ID by seizing or exchanging, use for switching between system.
For example: old isosystem measurement ID is ID3, and low priority is measured as ID4;
Seize the measurement ID of low priority: discharge earlier and measure ID3, ID4, set up new measurement control messages with measuring ID4;
Exchange and measure ID: discharge earlier and measure ID3, ID4, set up new measurement control messages, with the measurement control of measuring the newly-built d/d low priority of ID3 with measuring ID4.In actual applications, the situation that starts 16 measurements simultaneously is not a lot.
The present invention adopt as much as possible measure control revise order (only measure control revise order might be when transient state can't the recognition objective sub-district, just adopt and measure control and set up order), with the efficient of raising air-interface information.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (5)
1. the method controlling and discern Target cell in the transient measuring report is applied to from the handoff procedure of WCDMA sub-district to the GSM sub-district, and this method comprises the following steps:
A, when the number of different system cell identification code during more than or equal to the newly-increased GSM adjacent area number of user equipment (UE), radio network controller (RNC) selects unappropriated different system cell identification code as distributing to the corresponding identification code in the newly-increased GSM adjacent area of described UE, generates the measurement control messages and is handed down to described UE;
B, described UE carry out different system cell signal measurement and reporting measurement reports according to the measurement control messages that issues;
The measurement report that C, described RNC basis reports is in conjunction with switch decision criterion select target sub-district.
2. the method for claim 1 is characterized in that: generate described in the steps A and measure control messages and specifically comprise:
RNC carries out to measure to control and revises order, and what carry in the last measurement of the deletion control messages is not the corresponding identification code in GSM adjacent area of UE current area, and adds the corresponding identification code in the newly-increased GSM adjacent area of UE, and the measurement control messages of described generation is handed down to UE.
3. method as claimed in claim 1 or 2 is characterized in that: in the described steps A if the number of unappropriated different system cell identification code less than the newly-increased GSM adjacent area number of UE, is then carried out the following step:
RNC uses and measures the control release command, the last control messages of measuring of deletion; Use and measure control foundation order, set up new measurement control messages and be handed down to UE, and make two measurement identification code differences of measuring control messages.
4. method as claimed in claim 3, it is characterized in that: during the new measurement control messages of described foundation, if application is less than new measurement ID, the measurement ID by described RNC discharges a low priority sets up this new measurement control messages with this d/d measurement ID.
5. method as claimed in claim 4 is characterized in that: also comprise the step of using the measurement of the newly-built d/d low priority of measurement ID of old measurement control messages to control by described RNC.
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| CNB2004100878332A CN100364361C (en) | 2004-10-22 | 2004-10-22 | Method for controlling and recognizing aim cell in transient measuring report |
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| CNB2004100878332A CN100364361C (en) | 2004-10-22 | 2004-10-22 | Method for controlling and recognizing aim cell in transient measuring report |
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| CN100364361C true CN100364361C (en) | 2008-01-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101562846B (en) * | 2008-04-18 | 2011-07-13 | 中兴通讯股份有限公司 | Method, system and network side for blind switching |
| CN103379563B (en) * | 2012-04-27 | 2017-06-20 | 华为技术有限公司 | Changing method and equipment |
| CN104144459B (en) * | 2013-05-08 | 2017-11-21 | 成都鼎桥通信技术有限公司 | The method and apparatus of home cell is moved to from public network cell |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030218995A1 (en) * | 2002-05-21 | 2003-11-27 | Samsung Electronics Co., Ltd. | Method for handling inter-RAT measurement and report in a dual-mode user equipment |
| CN1505413A (en) * | 2002-12-03 | 2004-06-16 | 北京三星通信技术研究有限公司 | Method of switching between CDMA system and GSM system for dual mode mobile station |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030218995A1 (en) * | 2002-05-21 | 2003-11-27 | Samsung Electronics Co., Ltd. | Method for handling inter-RAT measurement and report in a dual-mode user equipment |
| CN1505413A (en) * | 2002-12-03 | 2004-06-16 | 北京三星通信技术研究有限公司 | Method of switching between CDMA system and GSM system for dual mode mobile station |
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