CN101827384A - Cell handover method and base station - Google Patents
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- CN101827384A CN101827384A CN 200910079561 CN200910079561A CN101827384A CN 101827384 A CN101827384 A CN 101827384A CN 200910079561 CN200910079561 CN 200910079561 CN 200910079561 A CN200910079561 A CN 200910079561A CN 101827384 A CN101827384 A CN 101827384A
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Abstract
The invention provides a cell handover method and a base station. The method comprises the following steps: when receiving a first mobile measurement report of a user terminal (UE), starting up a preparation-stage timer; during the operation of the preparation-stage timer, selecting a cell meeting a first selection condition from cells reported in the mobile measurement report from the UE as a target cell; and terminating the preparation-stage timer and indicating the UE to hand over to the target cell. The selection of the target cell is not limited to the cells reported in the primary mobile measurement report, but the cell meeting the first selection condition can be selected during the operation of the preparation-stage timer, thereby selecting a more excellent target cell for the UE, and reducing the interference between the cells and the call drop rate of the UE.
Description
Technical field
The present invention relates to the mobile communication technology field, method and the base station that switch particularly a kind of sub-district.
Background technology
In mobile communication system, in order to guarantee the continuity of customer service, network need be supported the function switched.In Long Term Evolution (LTE) system, what take is the switching of user terminal (UE) auxiliary network control, be that UE reports the mobility measurements report, comprise in the measurement report and satisfy the sub-district of switching primary condition, the select target sub-district is reported according to the mobility measurements of UE in the base station, and sends the Target cell that switching command indication UE switches to selection to UE.
In the LTE system, the mobility measurements report comprises altogether: A1, A2, A3, A4, A5, B1, seven measurement event of B2.Wherein A1 and A2 are Serving cell quality uploading incident, and the A3 incident can be used for co-frequency neighbor cell or iso-frequency adjacent community reports, and A4 and A5 are used for iso-frequency adjacent community and report, and B1 and B2 are used for the adjacent sub-district of different system and report.The sub-district that satisfies condition that each mobility measurements report of UE only can be reported a frequency.
Still there is not cell switching method in the prior art at the LTE system, if will have universal mobile telecommunications system (UMTS now, Universal Mobile Telecommunications System) cell switching method directly is applied in the LTE system, then can cause certain problem.The cell switching method of existing UMTS system is: after source base station receives the mobility measurements report of UE transmission, select one of them sub-district as Target cell in the sub-district of a plurality of frequencies that from mobility measurements report, comprise according to certain selection strategy, and send switching command indication UE to UE and switch to this Target cell.Owing to can comprise the sub-district of a plurality of frequencies in the measurement report of UMTS system, and can only comprise the sub-district of a frequency in the LTE system, and in fact the current sub-district of living in of UE may comprise the sub-district of facing of a plurality of frequencies, therefore, if the cell switching method of UMTS system is directly applied to the LTE system, then source base station only can be from the sub-district the one-shot measurement report select target sub-district, the Target cell that select this moment may not be the good sub-district of condition, can cause the big and higher situation of UE cutting off rate of presence of intercell interference.
Summary of the invention
In view of this, the invention provides method and the base station that switch a kind of sub-district,, reduce the interference and the UE cutting off rate of minizone so that be that UE selects more excellent Target cell at the LTE system.
The method that switch a kind of sub-district, this method comprises:
When receiving first mobility measurements report of UE, start the preparatory stage timer;
At described preparatory stage timer run duration, from UE by the sub-district selecting the sub-district of mobility measurements report reporting to satisfy first alternative condition as Target cell, stop described preparatory stage timer and indicate UE to switch to Target cell.
A kind of base station, this base station comprises: timer start unit, first selected cell, switching indicating member and preparatory stage timer;
Described timer start unit when being used for receiving first mobility measurements report of UE in this base station, starts the preparatory stage timer;
Described first selected cell, be used at preparatory stage timer run duration, satisfy the sub-district of first alternative condition as Target cell from described UE by selection the sub-district of mobility measurements report reporting, stop described preparatory stage timer, and the information of Target cell is offered described switching indicating member;
Described switching indicating member is used for the information according to the Target cell that receives, and indication UE switches to Target cell.
As can be seen from the above technical solutions, method provided by the present invention and base station are when first mobility measurements report that receives UE, start the preparatory stage timer, at preparatory stage timer run duration, from UE by the sub-district selecting the sub-district of mobility measurements report reporting to satisfy first alternative condition as Target cell, stop the preparatory stage timer and also indicate UE to switch to Target cell.That is to say, the invention enables choosing of Target cell no longer to be confined to the sub-district that a mobility measurements report is reported, but can choose the sub-district of satisfying first alternative condition of setting at preparatory stage timer run duration, thereby, reduce the interference and the UE cutting off rate of minizone for UE selects more excellent Target cell.
Description of drawings
The method flow diagram that Fig. 1 provides for the embodiment of the invention one;
The method flow diagram that Fig. 2 provides for the embodiment of the invention two;
The architecture of base station figure that Fig. 3 provides for the embodiment of the invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
Method provided by the present invention mainly comprises: when receiving first mobility measurements report of UE, start the preparatory stage timer; At preparatory stage timer run duration, from UE by the sub-district selecting the sub-district of mobility measurements report reporting to satisfy first alternative condition as Target cell, stop the preparatory stage timer, and indication UE switches to this Target cell.
Further, if the preparatory stage timer expiry, the sub-district of then determining to satisfy second alternative condition from the handoff response that receives is as Target cell, and indication UE switches to this Target cell.
Understand for convenience, enumerate three specific embodiments below said method is described in detail.
Embodiment one: in the situation of preparatory stage timer run duration handover success.As shown in Figure 1, this method can may further comprise the steps:
Step 101: source base station is received the mobility measurements report of the A3 incident that UE1 reports, and comprising frequency in this measurement report is the information of the sub-district 1 of freq1.
The incident of switching the mobility measurements report of adopting in the LTE system is generally the A3 incident, is example at this with the A3 incident.
When UE1 measures certain sub-district when satisfying switching condition, can report the mobility measurements report that comprises this cell information to source base station, switching condition can be the measured value of the measured value＞current service cell of adjacent sub-district+default side-play amount usually.Source base station herein is the base station of current service cell.Source base station is received the mobility measurements report that comprises sub-district 1 information, illustrates that sub-district 1 satisfies switching condition.
Step 102: source base station starts the preparatory stage timer, and the base station under sub-district 11 sends handoff request.
Source base station can comprise the service bearer information of UE1, for example information such as the type of service of UE1 support, speed in the handoff request that base station 1 sends.
Mobility measurements report in the step 101 is the mobility measurements report that UE1 reports for the first time, and this moment, source base station started the preparatory stage timer that is provided with at this UE1.
Usually the timing length of preparatory stage timer can obtain by emulation testing, if the long handover delay that can increase UE that is provided with, if therefore the cell quality that be provided with too short then can not guarantee chosen, need obtain a suitable value by modes such as emulation testings.
Step 103: source base station receives the mobility measurements report of the A3 incident that UE1 reports, and comprises the information that frequency is the sub-district 2 of freq2 in this mobility measurements report.
After source base station receives the mobility measurements report that UE1 reports once more, can judge whether to have started preparatory stage timer at UE1, if start, then explanation is not to receive the report of the mobility measurements of UE1 for the first time, if be not activated, then explanation is to receive the report of the mobility measurements of UE1 for the first time, and starts the preparatory stage timer at UE1.
Step 104: the base station 2 of source base station under sub-district 2 sends handoff request.
Step 105: after source base station receives the handoff response of replying the base station 1 under the sub-district 1, judge whether sub-district 1 satisfies the first default alternative condition, if then stop the preparatory stage timer.
Wherein, the first default alternative condition can for: all service bearers of UE1 can be admitted in sub-district 1, and the pilot measurement result of sub-district 1 is for best among the current pilot measurement result who reports.Owing to comprise the pilot measurement result who satisfies the switching condition sub-district in the mobility measurements that UE1 the reports report, therefore, source base station had been known the pilot measurement result of sub-district 1 and sub-district 2 before receiving the handoff response of replying sub-district 1, the pilot measurement result of hypothesis sub-district 1 is best among this embodiment, then determines sub-district 1 satisfied first alternative condition.The pilot measurement result can be: Reference Signal Received Power (RSRP, Reference Signal Received Power) value or Reference Signal Received Quality (RSRQ, Reference Signal Received Quality) value.
Need to prove: after base station 1 receives handoff request, can be according to the service bearer information of the UE1 that comprises in the handoff request, determine service bearer that self can admit and reply to source base station by handoff response, therefore, source base station can determine from handoff response whether base station 1 can admit all service bearers of UE1.
If the first default alternative condition is satisfied in sub-district 1, then can stop the preparatory stage timer and determine that sub-district 1 is Target cell, indication UE1 switches to sub-district 1; If the first default alternative condition is not satisfied in sub-district 1, for example, all carryings of UE1 can not be admitted in sub-district 1, then do not carry out any operation, wait for the handoff response of sub-district 2, and judge whether sub-district 2 satisfies the first default alternative condition, if satisfy sub-district 2, then stop the preparatory stage timer, and indication UE2 is to sub-district 2 switchings, by that analogy.
Step 106: source base station sends switching command indication UE1 to UE1 and switches to sub-district 1.
Realized the switching of Target cell at preparatory stage timer run duration by this embodiment UE1.
Embodiment two: the situation that realizes switching behind the preparatory stage timer expiry.As shown in Figure 2, this method can may further comprise the steps:
Step 201: source base station is received the mobility measurements report of the A3 incident that UE1 reports, and comprising frequency in this measurement report is the information of the sub-district 1 of freq1.
Step 202: source base station starts the preparatory stage timer, and the base station under sub-district 11 sends handoff request.
Step 203: source base station receives the mobility measurements report of the A3 incident that UE1 reports, and comprises the information that frequency is the sub-district 2 of freq2 in this mobility measurements report.
Step 204: the base station 2 of source base station under sub-district 2 sends handoff request.
Step 205: after source base station receives the handoff response of replying the base station 1 under the sub-district 1, judge that whether sub-district 1 satisfies the first default alternative condition, if not, is recorded in preparation with sub-district 1 and concentrates, and write down the frequency freq1 of this sub-district 1, continue to carry out following steps.
If the first default alternative condition is: it is best among the current pilot measurement result who reports can admitting all service bearers of UE1 and pilot measurement result.If all service bearers of UE1 can not be admitted in sub-district 1, then the first default alternative condition can not be satisfied in sub-district 1, then this sub-district 1 is recorded as to prepare the collection sub-district, uses when choosing Target cell behind the preparatory stage timer expiry.
Step 206: after source base station receives the handoff response of replying the base station 2 under the sub-district 2, judge that whether sub-district 2 satisfies the first default alternative condition, if not, is recorded in preparation with sub-district 2 and concentrates, and write down the frequency freq2 of this sub-district 2, continue to carry out following steps.
Suppose that sub-district 2 can not admit all carryings of UE2, then the first default alternative condition can not be satisfied in sub-district 2, then this sub-district 2 also is recorded as to prepare the collection sub-district.
Step 207: source base station receives the mobility measurements report of the A3 incident that UE1 reports, and comprises the information that frequency is the sub-district 3 of freq1 in this mobility measurements report.
When source base station receives the mobility measurements report, can be according to the subdistrict frequency point that comprises in this mobility measurements report, search and prepare to concentrate sub-district with identical frequency, if the sub-district that finds is not included in this mobility measurements report, then will prepare to concentrate the sub-district that is not included in this mobility measurements report from preparing to concentrate deletion.Owing to only comprise the sub-district 3 that frequency is freq1 in the report of the mobility measurements in this step, and do not comprise the sub-district 1 that same frequency is freq1, therefore, illustrate that the sub-district do not satisfy switching condition 1 this moment, therefore, sub-district 1 is deleted from preparing to concentrate.
Step 208: source base station sends handoff request to sub-district 3.
Step 209: after source base station receives the handoff response of replying the base station 3 under the sub-district 3, judge that whether sub-district 3 satisfies the first default alternative condition, if not, is recorded in preparation with sub-district 3 and concentrates, and write down the frequency freq1 of this sub-district 3, continue to carry out following steps.
Can admit all carryings though suppose sub-district 3, the pilot measurement result is not a maximum, and then the first default alternative condition can not be satisfied in sub-district 3, then sub-district 3 is recorded as to prepare the collection sub-district.
Step 210: the preparatory stage timer expiry, select to satisfy the sub-district 3 of second alternative condition as Target cell from preparing to concentrate.
The second default alternative condition can be specially: selection can be admitted the sub-district of all service bearers of UE1; If it is a plurality of to admit the sub-district of all service bearers of UE1 to exist, then can admit the best sub-district of pilot measurement result in the sub-district of all service bearers of UE1; If there is not to admit the sub-district of all service bearers of UE1, then can select to admit the sub-district of the service bearer of maximum UE1, perhaps can admit UE the sub-district of guaranteed bit rate service bearer; If admit maximum UE1 service bearer the sub-district or can admit UE the sub-district of guaranteed bit rate service bearer exist a plurality ofly, then can select to admit in the sub-district of service bearer of maximum UE1, the pilot measurement result is best; Or the like, certainly, the present invention is not limited to above several second alternative condition.
In the present embodiment, behind the preparatory stage timer expiry, the sub-district of preparing to concentrate is sub-district 2 and sub-district 3, wherein, only has sub-district 3 can admit all carryings of UE1, and therefore, source base station can select sub-district 3 as Target cell.
Step 211: source base station sends switching command indication UE1 to UE1 and switches to sub-district 3.
More than be the description that method provided by the present invention is carried out, below base station provided by the present invention be described in detail.The architecture of base station figure that Fig. 3 provides for the embodiment of the invention, as shown in Figure 3, this base station can comprise: timer start unit 301, first selected cell 302, switching indicating member 303 and preparatory stage timer 304.
Timer start unit 301 when being used for receiving first mobility measurements report of UE in this base station, starts preparatory stage timer 304.
First selected cell 302, be used at preparatory stage timer 304 run durations, satisfy the sub-district of first alternative condition as Target cell from UE by selection the sub-district of mobility measurements report reporting, stop preparatory stage timer 304, and the information of Target cell is offered switching indicating member 303.
Wherein, first selected cell 302 can be at preparatory stage timer run duration, to the sub-district transmission handoff request of UE by the mobility measurements report reporting, if receive the handoff response of the sub-district answer of satisfying first alternative condition, determine that then the sub-district of satisfied first alternative condition is a Target cell.
Further, this base station can also comprise: second selected cell 305, be used for after preparatory stage timer 304 is overtime, the sub-district of determining to satisfy second alternative condition from the sub-district that sends handoff response is as Target cell, and the information of Target cell offered switches indicating member 303.
Particularly, timer start unit 301 can comprise: judgment sub-unit 306 and promoter unit 307.
Particularly, first selected cell 302 select to admit all service bearers of UE and pilot measurement result for the best sub-district of pilot measurement result in current all sub-districts that report as Target cell.
Wherein, the pilot measurement result obtains in the mobility measurements report that reports by UE, and whether the sub-district can admit all service bearers of UE is to obtain in the handoff response of replying by the sub-district, and this part is a prior art, repeats no more.
In addition, first selected cell 302 can also be used at preparatory stage timer 304 run durations, does not satisfy first alternative condition if reply the sub-district of handoff response, then this sub-district is recorded in and prepares to concentrate, and write down the frequency point information of this sub-district.
At this moment, this base station can also comprise: prepare collection and search the unit (not shown), when being used for receiving the mobility measurements report of UE in this base station, search preparation according to the frequency point information that comprises in this mobility measurements report and concentrate sub-district with identical frequency, if the sub-district that finds is not included in this mobility measurements report, then will prepare to concentrate the sub-district deletion that is not included in the mobility measurements report.
Avoid the unsettled situation in some sub-district in this way, promptly satisfy switching condition in the starting stage of preparatory stage timer 304 operations, but after after a while, just do not satisfy switching condition, just no longer comprise this sub-district like this in the follow-up mobility measurements report with identical frequency point cell that reports, this sub-district also just should not be in the row of selection.
Second selected cell 305 can select to satisfy the sub-district of second alternative condition as Target cell from preparing to concentrate after preparatory stage timer 304 is overtime.
Particularly, second selected cell 305, selection can admit the sub-district of all service bearers of UE as Target cell; Perhaps, selection can admit the best sub-district of all service bearers of UE and pilot measurement result as Target cell; Perhaps, selection can admit the sub-district of service bearer of maximum UE as Target cell; Perhaps, selection can admit UE the sub-district of guaranteed bit rate service bearer as Target cell; Perhaps, selection can admit the best sub-district of the service bearer of maximum UE and pilot measurement result as Target cell.
Second selected cell 305 is concrete when using, and can be the sub-district of at first selecting to admit all service bearers of UE1; If it is a plurality of to admit the sub-district of all service bearers of UE1 to exist, then can admit the best sub-district of pilot measurement result in the sub-district of all service bearers of UE1; If there is not to admit the sub-district of all service bearers of UE1, then can select to admit the sub-district of the service bearer of maximum UE1, perhaps can admit UE the sub-district of guaranteed bit rate service bearer; If admit maximum UE1 service bearer the sub-district or can admit UE the sub-district of guaranteed bit rate service bearer exist a plurality ofly, then can select to admit in the sub-district of service bearer of maximum UE1, the pilot measurement result is best.
By above description as can be seen, method provided by the present invention and base station are when first mobility measurements report that receives UE, start the preparatory stage timer, at preparatory stage timer run duration, from UE by the sub-district selecting the sub-district of mobility measurements report reporting to satisfy first alternative condition as Target cell, stop the preparatory stage timer and also indicate UE to switch to Target cell.That is to say, the invention enables choosing of Target cell no longer to be confined to the sub-district that a mobility measurements report is reported, but can choose the sub-district of satisfying first alternative condition of setting at preparatory stage timer run duration, thereby, reduce the interference and the UE cutting off rate of minizone for UE selects more excellent Target cell.
More preferably, behind the preparatory stage timer expiry, still there is not to satisfy the sub-district of first alternative condition, then can from the sub-district that sends handoff response, select to satisfy the sub-district of second alternative condition as Target cell, that is to say, if in setting-up time, there is not to satisfy the sub-district of first alternative condition, can also avoid UE to can not get for a long time switching from current for selecting optimum sub-district the sub-district of switching.
The present invention can be provided with first alternative condition and second alternative condition neatly according to the user demand of reality, thereby makes UE switch to optimum sub-district.And, the setting duration of preparatory stage timer can be set neatly according to the demand of reality, thus the actual demand of balance quality of handoff and switching time.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (14)
1. the method switched of a sub-district is characterized in that this method comprises:
When receiving first mobility measurements report of user terminal UE, start the preparatory stage timer;
At described preparatory stage timer run duration, from UE by the sub-district selecting the sub-district of mobility measurements report reporting to satisfy first alternative condition as Target cell, stop described preparatory stage timer and indicate UE to switch to Target cell.
2. method according to claim 1 is characterized in that, described sub-district of satisfying first alternative condition by selection the sub-district of mobility measurements report reporting from UE comprises as Target cell:
To the sub-district transmission handoff request of UE,, determine that then described sub-district of satisfying first alternative condition is a Target cell if receive the handoff response of the sub-district answer of satisfying first alternative condition by the mobility measurements report reporting.
3. method according to claim 1 and 2, it is characterized in that, this method also comprises: behind the described preparatory stage timer expiry, the sub-district of determining to satisfy second alternative condition from the sub-district that sends handoff response is as Target cell, and indication UE switches to Target cell.
4. method according to claim 1, it is characterized in that, when described first mobility measurements that receives UE is reported, starting the preparatory stage timer specifically comprises: after receiving the mobility measurements report that UE reports, judge whether to start the preparatory stage timer at this UE, if not, then start the preparatory stage timer at this UE.
5. method according to claim 1 and 2 is characterized in that, comprises the pilot measurement result of institute's reporting subdistrict in the described mobility measurements report;
Described first alternative condition comprises: all service bearers of described UE can be admitted in the sub-district, and the pilot measurement result of this sub-district is best for pilot measurement result in current all sub-districts that report.
6. method according to claim 3, it is characterized in that this method also comprises:, do not satisfy described first alternative condition if reply the sub-district of handoff response at described preparatory stage timer run duration, then this sub-district is recorded in and prepares to concentrate, and write down the frequency point information of this sub-district;
When receiving the mobility measurements report of described UE, search preparation according to the frequency point information that comprises in this mobility measurements report and concentrate sub-district with identical frequency, if the sub-district that finds is not included in this mobility measurements report, then will prepare to concentrate the sub-district deletion that is not included in this mobility measurements report;
Describedly determine that from the sub-district that sends handoff response the sub-district of satisfying second alternative condition specifically comprises as Target cell: concentrate from described preparation and select to satisfy the sub-district of second alternative condition as Target cell.
7. method according to claim 3 is characterized in that, described second alternative condition comprises: all service bearers of described UE can be admitted in the sub-district; Perhaps, the sub-district can admit all service bearers of described UE and pilot measurement result best; Perhaps, the service bearer of maximum described UE can be admitted in the sub-district; Perhaps, the guaranteed bit rate service bearer of described UE can be admitted in the sub-district; Perhaps, it is best that the sub-district and the pilot measurement result of service bearer of maximum described UE can be admitted in the sub-district.
8. a base station is characterized in that, this base station comprises: timer start unit, first selected cell, switching indicating member and preparatory stage timer;
Described timer start unit when being used for receiving first mobility measurements report of UE in this base station, starts the preparatory stage timer;
Described first selected cell, be used at preparatory stage timer run duration, satisfy the sub-district of first alternative condition as Target cell from described UE by selection the sub-district of mobility measurements report reporting, stop described preparatory stage timer, and the information of Target cell is offered described switching indicating member;
Described switching indicating member is used for the information according to the Target cell that receives, and indication UE switches to Target cell.
9. base station according to claim 8, it is characterized in that, described first selected cell is at described preparatory stage timer run duration, to the sub-district transmission handoff request of UE by the mobility measurements report reporting, if receive the handoff response of the sub-district answer of satisfying first alternative condition, determine that then described sub-district of satisfying first alternative condition is a Target cell.
10. according to Claim 8 or 9 described base stations, it is characterized in that, this base station also comprises: second selected cell, be used for behind described preparatory stage timer expiry, the sub-district of determining to satisfy second alternative condition from the sub-district that sends handoff response is as Target cell, and the information of Target cell is offered described switching indicating member.
11. base station according to claim 8 is characterized in that, described timer start unit comprises: judgment sub-unit and promoter unit;
Described judgment sub-unit after being used for this base station and receiving the mobility measurements report that UE reports, judges whether to start the preparatory stage timer at this UE, if not, then sends enabled instruction to described promoter unit;
Described promoter unit is used to receive after the enabled instruction and starts the preparatory stage timer at this UE.
12. according to Claim 8 or 9 described base stations, it is characterized in that, described first selected cell select to admit all service bearers of described UE and pilot measurement result for the best sub-district of pilot measurement result in current all sub-districts that report as Target cell.
13. base station according to claim 10, it is characterized in that, described first selected cell, also be used at described preparatory stage timer run duration, do not satisfy described first alternative condition if reply the sub-district of handoff response, then this sub-district is recorded in and prepares to concentrate, and write down the frequency point information of this sub-district;
This base station also comprises: prepare collection and search the unit, when being used for receiving the mobility measurements report of described UE in this base station, search described preparation according to the frequency point information that comprises in this mobility measurements report and concentrate sub-district with identical frequency, if the sub-district that finds is not included in this mobility measurements report, then will prepare to concentrate the sub-district deletion that is not included in the mobility measurements report;
Described second selected cell concentrates the sub-district of selecting satisfied second alternative condition as Target cell from described preparation behind described preparatory stage timer expiry.
14. base station according to claim 10 is characterized in that, described second selected cell, and selection can admit the sub-district of all service bearers of described UE as Target cell; Perhaps, selection can admit the best sub-district of all service bearers of described UE and pilot measurement result as Target cell; Perhaps, selection can admit the sub-district of service bearer of maximum described UE as Target cell; Perhaps, selection can admit described UE the sub-district of guaranteed bit rate service bearer as Target cell; Perhaps, selection can admit the best sub-district of the service bearer of maximum described UE and pilot measurement result as Target cell.
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| CN102421154A (en) * | 2011-12-16 | 2012-04-18 | 大唐移动通信设备有限公司 | Cell switching method and equipment based on measurement report |
| WO2012145991A1 (en) * | 2011-04-26 | 2012-11-01 | 中兴通讯股份有限公司 | Method, system and device for determining high interference information target cell |
| WO2014166124A1 (en) * | 2013-04-12 | 2014-10-16 | 华为技术有限公司 | Method and apparatus for assisting terminal in performing measurement |
| CN107005377A (en) * | 2014-12-17 | 2017-08-01 | 瑞典爱立信有限公司 | Method and relevant network node and wireless device for sending mobility signal |
| CN107493591A (en) * | 2017-07-14 | 2017-12-19 | 武汉正维电子技术有限公司 | Reduce LTE load balance optimization methods and the base station of signaling consumption |
| WO2020061899A1 (en) * | 2018-09-27 | 2020-04-02 | 华为技术有限公司 | Cell switching method and device |
| CN113490244A (en) * | 2019-01-30 | 2021-10-08 | Oppo广东移动通信有限公司 | Cell switching method, terminal equipment and network equipment |
| CN114145038A (en) * | 2020-07-03 | 2022-03-04 | 北京小米移动软件有限公司 | Wireless communication method and apparatus, communication device, and storage medium |
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| CN100370878C (en) * | 2004-09-23 | 2008-02-20 | 华为技术有限公司 | Control method of different frequency different system switchover |
| JP4530148B2 (en) * | 2004-11-30 | 2010-08-25 | 日本電気株式会社 | CDMA mobile communication system, base station, and active set selection method |
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