CN102196485A - Method and system for reducing unnecessary switching in LTE (Long Term Evolution) system - Google Patents
Method and system for reducing unnecessary switching in LTE (Long Term Evolution) system Download PDFInfo
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- CN102196485A CN102196485A CN2010101204648A CN201010120464A CN102196485A CN 102196485 A CN102196485 A CN 102196485A CN 2010101204648 A CN2010101204648 A CN 2010101204648A CN 201010120464 A CN201010120464 A CN 201010120464A CN 102196485 A CN102196485 A CN 102196485A
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Abstract
The invention discloses a method and system for reducing unnecessary switching in an LTE (Long Term Evolution) system, which are used for solving the technical problem of generating unnecessary switching between cells. In the invention, a switching request transmitted to a third base station that initiates switching to a first base station which detects the unnecessary switching carries a measuring report; the first base station judges whether the switching is accepted or not according to the measuring report and a cell switching parameter between the first base station and a second base station; and a target cell is recommended while the switching is not accepted. Or the first base station and/or the second base station judges whether the unnecessary switching is generated or not according to an adjusting direction of the cell switching parameter after the cell switching parameter of the first base station and the second base station is adjusted; and if the unnecessary switching is generated, the cell switching parameter is transmitted to a common neighbor third base station; and the third base station selects a switched target cell for a mobile terminal according to the cell switching parameter between the first base station and the second base station. According to the invention, the necessary switching frequency between the cells can be reduced and the consumption of network resources is avoided.
Description
Technical field
The present invention relates to radio honeycomb communication system, (Long Term Evolution LTE) reduces portable terminal and carries out unnecessary changing method and system in the minizone in the mobile communication system to relate in particular to Long Term Evolution.
Background technology
(Evolved NodeB, eNB) (Evolved Packet Core EPC) forms the network flattening with the evolution packet switching center by E-UTRAN (Evolved UTRAN) base station to describe the LTE network among the 3GPP protocol version 36300-800.Wherein EUTRAN comprises the set of the eNB that is connected by the S1 interface with EPC, can connect by X2 between the eNB.S1, X2 are logic interfacing.An EPC can manage one or more eNB, and an eNB also can be controlled by a plurality of EPC, and an eNB can manage one or more sub-districts.
MANET (SON) is a kind of technology of carrying out network configuration and optimization automatically.The characteristics of this technology are the self-configuring self-optimizings, this technology is used in LTE and is made that LTE base station (eNB) can be according to the automatic configuration network parameter of certain measurement, and carry out Automatic Optimal according to network change, thus keep the network performance optimum, save lot of manpower and material resources simultaneously.
One of MANET research point be the mobile robustness optimization problem (Mobility RobustnessOptimization, MRO).This problem requires to solve late switch, switch too early, the switch to wrong sub-district and the problem of unnecessary switching crossed that may run into when portable terminal switches in the minizone.Spend evening and switch and be meant when portable terminal triggers and switch or switching when also not triggering, link failure has taken place in the very weak and terminal of the signal strength signal intensity of the cell-of-origin that it receives.The feature of crossing the switching in evening is that link failure takes place in the cell-of-origin portable terminal, and terminal attempts connecting to another sub-district behind the link failure; Switch too early and be meant to switch and take place too early and link failure has taken place, it is characterized in that portable terminal has successfully been set up with Target cell to be connected, link failure has taken place in terminal immediately, and terminal attempts connecting to the cell-of-origin again thereafter; The sub-district that switches to mistake is meant to switch has selected incorrect Target cell, it is characterized in that portable terminal has successfully been set up with Target cell is connected, link failure has taken place in terminal immediately, thereafter terminal again to neither the cell-of-origin neither Target cell the third party sub-district attempt connecting; Unnecessary switching is meant in minizone handoff parameter unreasonable allocation or handoff parameter not to be had under the optimised situation, though portable terminal has normally been finished switching, link failure does not take place, but it is redundant switching, there is no need to take place at all, perhaps can reach same effect by switching times still less.For example portable terminal switches to sub-district B from sub-district A, and then switches to sub-district C fast from sub-district B again.Though in this twice continuous handoff procedure, do not have the generation of link failure, handoff procedure is normally finished, portable terminal is very short at the residence time of sub-district B, has formed a kind of quick switching of wasting Internet resources.Therefore should avoid the unnecessary switching of consumption of network resources in the system as far as possible.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method and system that reduce unnecessary switching in a kind of LTE system, is used to solve because minizone handoff parameter unreasonable allocation or handoff parameter do not have to take place under the optimised situation technical problem of unnecessary switching.
For achieving the above object, according to an aspect of the present invention, propose to reduce in a kind of LTE system method of unnecessary switching, this method comprises:
Source base station the 3rd base station that detects first base station requests initiation switching of unnecessary switching comprises the measurement report of portable terminal to target BS second base station of described first base station and unnecessary switching in follow-up handoff request, described first base station judges whether to accept the handoff request of described the 3rd base station transmission according to described measurement report and with sub-district handoff parameter between described second base station, if accept handoff request, then return switching request acknowledgement message, otherwise return the handoff request failed message to described the 3rd base station.
Further, in described handoff request failed message, comprise the sign of the switching target small area of recommendation, switch to the Target cell of described recommendation to inform described the 3rd base station.
Further, after the sub-district handoff parameter between described first base station and described second base station changes, described first base station is judged in the time of can not producing unnecessary switching again, or described first base station is according to the statistics of the measurement report that described the 3rd base station is sent, the number that judge to produce unnecessary switching is when setting thresholding, described first base station sends to described the 3rd base station and stops to send measurement report message, notifies described the 3rd base station to stop to send the measurement report of portable terminal to described first base station and second base station in follow-up handoff request message.
Based on said method, the present invention also proposes to reduce in a kind of LTE system system of unnecessary switching, and this system comprises:
First base station, be used for checking whether unnecessary switching takes place, source base station the 3rd base station that request is initiated to switch when detecting unnecessary the switching comprises the measurement report of portable terminal to target BS second base station of described first base station and unnecessary switching in follow-up handoff request; And judge whether to accept the handoff request of described the 3rd base station transmission according to described measurement report and with sub-district handoff parameter between described second base station, if accept handoff request, then return switching request acknowledgement message, otherwise return the handoff request failed message to described the 3rd base station.
The 3rd base station is used for sending handoff request to described first base station, carries out to switch according to the feedback message of described first base station and selects.
Further, described system comprises the sign of the switching target small area of recommendation in described handoff request failed message, switches to the Target cell of described recommendation to inform described the 3rd base station.
Further, in the described system, after the sub-district handoff parameter between described first base station and described second base station changes, described first base station is judged in the time of can not producing unnecessary switching again, or described first base station is according to the statistics of the measurement report that described the 3rd base station is sent, the number that judge to produce unnecessary switching is when setting thresholding, described first base station sends to described the 3rd base station and stops to send measurement report message, notifies described the 3rd base station to stop to send the measurement report of portable terminal to described first base station and second base station in follow-up handoff request message.
For achieving the above object, according to a further aspect in the invention, propose to reduce in a kind of LTE system method of unnecessary switching, this method comprises:
After sub-district handoff parameter between first base station and second base station adjusted, described first base station and/or second base station judge whether to produce unnecessary switching according to the adjustment direction of sub-district handoff parameter, the 3rd base station to public adjacency when judging that meeting produces unnecessary the switching sends the sub-district handoff parameter, when the portable terminal of described the 3rd BTS management was prepared to first base station or the switching of second base station, described the 3rd base station was the Target cell that described portable terminal is selected switching according to the sub-district handoff parameter between described first base station and second base station.
Further, in this method, described sub-district handoff parameter comprises the switching threshold of minizone of described first base station and second base station and the sign of respective cell; Described sub-district handoff parameter sends to described the 3rd base station by request with reference to switching threshold message.
Further, in this method, do not send the message that stops with reference to switching threshold to described the 3rd base station when described first base station and/or second base station can not produce unnecessary the switching according to the adjustment direction determining of sub-district handoff parameter, this message comprises the cell ID of described first base station and second base station.
Based on said method, the present invention also proposes to reduce in a kind of LTE system system of unnecessary switching, and this system comprises:
First base station, second base station, be used for after the sub-district handoff parameter adjustment between first base station and second base station judging whether to produce unnecessary switching, send the sub-district handoff parameter to the 3rd base station of public adjacency judging to produce unnecessary the switching time according to the adjustment direction of sub-district handoff parameter;
The 3rd base station is used for when the portable terminal of its management is prepared to first base station or the switching of second base station, is the Target cell that described portable terminal is selected switching according to the sub-district handoff parameter between described first base station and second base station.
Further, in this system, described sub-district handoff parameter comprises the switching threshold of minizone of described first base station and second base station and the sign of respective cell; Described sub-district handoff parameter sends to described the 3rd base station by request with reference to switching threshold message.
Further, in this system, do not send the message that stops with reference to switching threshold to described the 3rd base station when described first base station and/or second base station can not produce unnecessary the switching according to the adjustment direction determining of sub-district handoff parameter, this message comprises the cell ID of described first base station and second base station.
The present invention carries the measurement report of portable terminal to second base station, purpose base station of first base station and unnecessary switching in the 3rd base station of initiating to switch in the handoff request that first base station that detects unnecessary switching sends, by first base station based on measurement report and and second base station between the sub-district handoff parameter judge whether to accept switching, when not accepting, provide the recommendation Target cell.Or after first base station and the adjustment of the second base station cell handoff parameter, judge whether to produce unnecessary switching by first base station and/or second base station adjustment direction according to the sub-district handoff parameter, the 3rd base station to public adjacency when judging that meeting produces unnecessary the switching sends the sub-district handoff parameter, when the portable terminal of the 3rd BTS management was prepared to first base station or the switching of second base station, the 3rd base station was the Target cell that described portable terminal is selected switching according to the sub-district handoff parameter between first base station and second base station.Can reduce the number of times of necessity switching of minizone by the way, avoid consumption of network resources.
Description of drawings
Fig. 1 is the method flow of the specific embodiment of the invention 1;
Fig. 2 is the method flow of the specific embodiment of the invention 2;
Fig. 3 is the method flow of the specific embodiment of the invention 3.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
The present invention represents the signal strength signal intensity of the detected Target cell of portable terminal with Mn, and Ms represents the signal strength signal intensity of the detected cell-of-origin of terminal, and T represents that portable terminal switches to the threshold value of the signal strength signal intensity of Target cell from the cell-of-origin.According to existing LTE standard, when formula (1) is set up, portable terminal will switch to Target cell from the cell-of-origin.
Mn＞Ms+T (formula 1)
In the specific embodiment of the invention, consider that three neighbor cells are respectively sub-district A, sub-district B and sub-district C.Base station A, base station B and base station C represent the control base station of sub-district A, sub-district B and sub-district C respectively.Ma, Mb and Mc represent the signal strength signal intensity of the detected sub-district A of portable terminal, sub-district B and sub-district C respectively.Tab, Tac, Tba, Tbc, Tca and Tcb represent that respectively portable terminal switches to the threshold value of sub-district A and threshold value that portable terminal from sub-district C switch to sub-district B from threshold value, the portable terminal that sub-district B switches to sub-district C from sub-district C from threshold value, the portable terminal that sub-district B switches to sub-district A from threshold value, the portable terminal that sub-district A switches to sub-district C from threshold value, the portable terminal that sub-district A switches to sub-district B.
Embodiment 1: scheme one
As Fig. 1, after base station B detected the unnecessary switching generation of certain number of times, promptly portable terminal switched to sub-district B from sub-district A, switches to sub-district C after the handover success again rapidly.Carry out the sub-district handoff parameter adjustment of sub-district B and sub-district C earlier, still do not reduce if adjust the unnecessary switching times in back, then base station B request base station A sends measurement report message, and after this, base station A comprises user's measurement of correlation report in sending handoff request.The handoff request message that base station B sends according to base station A, judge whether to accept handoff request, if accept handoff request, then return a switching request acknowledgement message, if do not accept handoff request, then return a handoff request failed message, and in the handoff request failed message, comprise the relevant information of recommending the sub-district.After statistics after a while, whether base station B can change according to the sub-district handoff parameter between sub-district B and the sub-district C, and the statistical information of the portable terminal measurement report that sends of base station A judges whether base station A need send measurement report at handoff request message relay supervention.If unwanted words, base station B sends the message that stops to send measurement report to base station A.
In this specific embodiment, need do following increases and modification to existing protocol:
1, increases request and send measurement report message.This message comprises the Cell Global Identity of two sub-districts that need measurement report, and (Evolved Cell Global Identifier, ECGI) (for example, sub-district B and sub-district C) is as shown in table 1.The purpose of this message is that informing base station increases the measurement report of portable terminal about two designated cell in existing handoff request message;
Table 1 request sends the explanation of measurement report message content
| The cell title | There is situation | IE type and reference information |
| The ECGI of-＞sub-district B | M | ? |
| The ECGI of-＞sub-district C | M | ? |
2, increase the message that stops to send measurement report.This message comprises the ECGI of two sub-districts that need stop to send measurement report, and is as shown in table 2.The purpose of this message is that informing base station stops in the existing handoff request message and to increase the measurement report of portable terminal about two designated cell;
Table 2 stops to send the explanation of measurement report message content
| The cell title | There is situation | IE type and reference information |
| The ECGI of-＞sub-district B | M | ? |
| The ECGI of-＞sub-district C | M | ? |
3, expand existing handoff request message.In existing handoff request message, increase the ECGI of two sub-districts and the measurement report of two sub-districts, as shown in table 3;
The explanation of table 3 handoff request message newly-added information content
| The cell title | There is situation | IE type and reference information |
| … | ? | ? |
| The ECGI of-＞sub-district B | O | ? |
| -＞sub-district B measurement report | O | ? |
| The ECGI of-＞sub-district C | O | ? |
| -＞sub-district C measurement report | O | ? |
| … | ? | ? |
4, expand existing handoff request failed message.In existing handoff request failed message, increase the ECGI of the switching target small area of recommending, as shown in table 4;
The explanation of table 4 handoff request failed message newly-added information content
| The cell title | There is situation | IE type and reference information |
| … | ? | ? |
| -＞the recommend ECGI of sub-district | O | ? |
| … | ? | ? |
5, in the cause value of existing handoff request failed message, increase by one type " avoiding unnecessary switching ".
Fig. 1 is the method flow diagram of the embodiment of the invention 1 correspondence, and concrete steps are as follows:
After step 101, base station B detect the unnecessary switching of certain number of times, judge that portable terminal is to switch to sub-district B from sub-district A, and then switch to sub-district C's fast;
If step 107 formula (1) is false, base station B sends switching request acknowledgement message to base station A;
If step 108 formula (1) is set up, base station B sends the handoff request failed message to base station A, shows that failure cause is " avoiding unnecessary switching ", and can comprise the optional cell information of recommending of ECGI conduct of sub-district C in message;
Method based on the unnecessary switching of minimizing of embodiment 1, the present invention also proposes the system of the unnecessary switching of a kind of corresponding minimizing, comprises source base station the 3rd base station (corresponding to the base station A in the method) of initiate switching in this system, detects first base station (corresponding to the base station B in the method) of unnecessary switching and destination node second base station (corresponding to the base station C in the method) of unnecessary switching.First base station is used for checking whether unnecessary switching takes place, and source base station the 3rd base station that request is initiated to switch when detecting unnecessary the switching comprises the measurement report of portable terminal to target BS second base station of described first base station and unnecessary switching in follow-up handoff request; And judge whether to accept the handoff request of described the 3rd base station transmission according to described measurement report and with sub-district handoff parameter between described second base station, if accept handoff request, then return switching request acknowledgement message, otherwise return the handoff request failed message to described the 3rd base station.The 3rd base station is used for sending handoff request to described first base station, carries out to switch according to the feedback message of described first base station and selects.
Preferably, in described handoff request failed message, comprise the sign of the switching target small area of recommendation, switch to the Target cell of described recommendation to inform described the 3rd base station.
Preferably, after the sub-district handoff parameter between described first base station and described second base station changed, described first base station was judged in the time of can not producing unnecessary switching again; Or described first base station is according to the statistics of the measurement report that described the 3rd base station is sent, the number that judge to produce unnecessary switching is when setting thresholding, described first base station sends to described the 3rd base station and stops to send measurement report message, notifies described the 3rd base station to stop to send the measurement report of portable terminal to described first base station and second base station in follow-up handoff request message.
Embodiment 2: scheme two
With Fig. 2 and Fig. 3 is example, and after sub-district B and sub-district C generation sub-district handoff parameter adjustment, the base station is according to the adjustment direction of sub-district handoff parameter, and whether decision sends corresponding sub-district handoff parameter to public adjacent base station (for example, the control base station of sub-district A).For example, base station B finds that sub-district B has turned down to the switching threshold of sub-district C, the portable terminal of public adjacent area sub-district A that then can anticipation goes out sub-district B and sub-district C is when switching to sub-district B, probably after the meeting handover success, switch to sub-district C again rapidly, so base station B sends the switching threshold of sub-district B to sub-district C to base station A.Base station A can judge the Target cell that switches the user according to the switching threshold of sub-district B to sub-district C.Whether base station B can change to judge whether base station A continues the switching threshold of needs reference cell B to sub-district C according to handoff parameter between sub-district B and the sub-district C, if do not need, then sends the message that stops with reference to switching threshold to base station A.
Concrete message and the cell that increases is as follows:
1, increases request with reference to switching threshold message.This message comprise the cell-of-origin of switching ECGI, switching Target cell ECGI and switch to the dependent thresholds of Target cell from the cell-of-origin, as shown in table 5;
Table 5 request is with reference to the switching threshold message content
| The cell title | There is situation | IE type and reference information |
| The ECGI of-＞sub-district B | M | ? |
| The ECGI of-＞sub-district C | M | ? |
| Sub-district B is to the switching threshold of sub-district C | M | ? |
2, increase and to stop with reference to switching threshold message, this message comprises the ECGI of the Target cell of the ECGI of cell-of-origin of switching and switching, and is as shown in table 6;
Table 6 stops with reference to the switching threshold message content
| The cell title | There is situation | IE type and reference information |
| The ECGI of-＞sub-district B | M | ? |
| The ECGI of-＞sub-district C | M | ? |
Fig. 2 is the method flow diagram of the embodiment of the invention 2 correspondences, and concrete steps are as follows:
After step 201, base station B detect the unnecessary switching of certain number of times, judge that portable terminal is to switch to sub-district B from sub-district A, and then switch to sub-district C's fast;
Step 202, base station B and base station C initiate switching threshold and consult, and adjust Tbc and Tcb;
Step 203, base station B send request with reference to switching threshold message to base station A, and message format such as table 5 comprise the ECGI that the handover source sub-district is sub-district B in the message, and the ECGI of switching target small area is ECGI and the dependent thresholds Tbc of sub-district C;
Step 204, the portable terminal that certain is managed by base station A detect the variation of signal strength signal intensity and satisfy the condition that reports of measuring, and send measurement report to base station A; Base station A judges that according to the measurement report of terminal portable terminal should switch to sub-district B from sub-district A;
Whether step 205, base station A set up according to the measurement report and the switching threshold Tbc judgment formula (1) of terminal, and the cell-of-origin in formula this moment (1) is sub-district B, and Target cell is sub-district C;
If step 206 formula (1) is false, base station A sends handoff request message to base station B;
If step 207 formula (1) is set up, base station A sends handoff request message to base station C;
Step 208, after after a while, base station B can according to sub-district handoff parameter between sub-district B and the sub-district C whether change judge base station A whether also needs continue with reference to its switching threshold Tbc.After for example the sub-district handoff parameter changes between sub-district B and the sub-district C, base station B judges to be provided with in new parameter and takes place to switch to sub-district B from sub-district A down to switch to the possibility of sub-district this incident of C again rapidly smaller that base station B can judge that base station A does not need to continue with reference to switching threshold Tbc so; If base station B judges base station A do not need to continue with reference to switching threshold Tbc, base station B sends the message that stops with reference to switching threshold to base station A, and message structure is as shown in table 6.
Embodiment 3:
Fig. 3 is the method process chart of the embodiment of the invention 3, and concrete steps are as follows:
If step 306 formula (1) is false, base station A sends handoff request message to base station B;
If step 307 formula (1) is set up, base station A sends handoff request message to base station C;
Method based on the unnecessary switching of minimizing of embodiment 2 and 3, the present invention also proposes the system of the unnecessary switching of a kind of corresponding minimizing, comprises in this system to initiate source base station the 3rd base station (corresponding to the base station A in the method) of switching, first base station, two base stations (corresponding to the base station B in the method) that might produce unnecessary switching and second base station (corresponding to the base station C in the method).
First base station, second base station are used for after the sub-district handoff parameter adjustment between first base station and second base station judging whether to produce unnecessary switching according to the adjustment direction of sub-district handoff parameter, send the sub-district handoff parameter to the 3rd base station of public adjacency judging can produce unnecessary the switching time; The 3rd base station is used for when the portable terminal of its management is prepared to first base station or the switching of second base station, is the Target cell that described portable terminal is selected switching according to the sub-district handoff parameter between described first base station and second base station.
Preferably, described sub-district handoff parameter comprises the switching threshold of minizone of described first base station and second base station and the sign of respective cell; Described sub-district handoff parameter sends to described the 3rd base station by request with reference to switching threshold message.
Preferably, do not send the message that stops with reference to switching threshold to described the 3rd base station when described first base station and/or second base station can not produce unnecessary the switching according to the adjustment direction determining of sub-district handoff parameter, this message comprises the cell ID of described first base station and second base station.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (12)
1. reduce the method for unnecessary switching in the LTE system, it is characterized in that, comprising:
Source base station the 3rd base station that detects first base station requests initiation switching of unnecessary switching comprises the measurement report of portable terminal to target BS second base station of described first base station and unnecessary switching in follow-up handoff request, described first base station judges whether to accept the handoff request of described the 3rd base station transmission according to described measurement report and with sub-district handoff parameter between described second base station, if accept handoff request, then return switching request acknowledgement message, otherwise return the handoff request failed message to described the 3rd base station.
2. method according to claim 1 is characterized in that, comprises the sign of the switching target small area of recommendation in described handoff request failed message, switches to the Target cell of described recommendation to inform described the 3rd base station.
3. method according to claim 1 and 2, it is characterized in that, after the sub-district handoff parameter between described first base station and described second base station changes, described first base station is judged in the time of can not producing unnecessary switching again, or described first base station is according to the statistics of the measurement report that described the 3rd base station is sent, the number that judge to produce unnecessary switching is when setting thresholding, described first base station sends to described the 3rd base station and stops to send measurement report message, notifies described the 3rd base station to stop to send the measurement report of portable terminal to described first base station and second base station in follow-up handoff request message.
4. reduce the system of unnecessary switching in the LTE system, it is characterized in that, comprising:
First base station, be used for checking whether unnecessary switching takes place, source base station the 3rd base station that request is initiated to switch when detecting unnecessary the switching comprises the measurement report of portable terminal to target BS second base station of described first base station and unnecessary switching in follow-up handoff request; And judge whether to accept the handoff request of described the 3rd base station transmission according to described measurement report and with sub-district handoff parameter between described second base station, if accept handoff request, then return switching request acknowledgement message, otherwise return the handoff request failed message to described the 3rd base station;
The 3rd base station is used for sending handoff request to described first base station, carries out to switch according to the feedback message of described first base station and selects.
5. system according to claim 4 is characterized in that, comprises the sign of the switching target small area of recommendation in described handoff request failed message, switches to the Target cell of described recommendation to inform described the 3rd base station.
6. according to claim 4 or 5 described systems, it is characterized in that after the sub-district handoff parameter between described first base station and described second base station changed, described first base station was judged in the time of can not producing unnecessary switching again; Or described first base station is according to the statistics of the measurement report that described the 3rd base station is sent, the number that judge to produce unnecessary switching is when setting thresholding, described first base station sends to described the 3rd base station and stops to send measurement report message, notifies described the 3rd base station to stop to send the measurement report of portable terminal to described first base station and second base station in follow-up handoff request message.
7. reduce the method for unnecessary switching in the LTE system, it is characterized in that, comprising:
After sub-district handoff parameter between first base station and second base station adjusted, described first base station and/or second base station judge whether to produce unnecessary switching according to the adjustment direction of sub-district handoff parameter, the 3rd base station to public adjacency when judging that meeting produces unnecessary the switching sends the sub-district handoff parameter, when the portable terminal of described the 3rd BTS management was prepared to first base station or the switching of second base station, described the 3rd base station was the Target cell that described portable terminal is selected switching according to the sub-district handoff parameter between described first base station and second base station.
8. method according to claim 7 is characterized in that, described sub-district handoff parameter comprises the switching threshold of minizone of described first base station and second base station and the sign of respective cell; Described sub-district handoff parameter sends to described the 3rd base station by request with reference to switching threshold message.
9. according to claim 7 or 8 described methods, it is characterized in that, do not send the message that stops with reference to switching threshold to described the 3rd base station when described first base station and/or second base station can not produce unnecessary the switching according to the adjustment direction determining of sub-district handoff parameter, this message comprises the cell ID of described first base station and second base station.
10. reduce the system of unnecessary switching in the LTE system, it is characterized in that, comprising:
First base station, second base station, be used for after the sub-district handoff parameter adjustment between first base station and second base station judging whether to produce unnecessary switching, send the sub-district handoff parameter to the 3rd base station of public adjacency judging to produce unnecessary the switching time according to the adjustment direction of sub-district handoff parameter;
The 3rd base station is used for when the portable terminal of its management is prepared to first base station or the switching of second base station, is the Target cell that described portable terminal is selected switching according to the sub-district handoff parameter between described first base station and second base station.
11. system according to claim 10 is characterized in that, described sub-district handoff parameter comprises the switching threshold of minizone of described first base station and second base station and the sign of respective cell; Described sub-district handoff parameter sends to described the 3rd base station by request with reference to switching threshold message.
12. according to claim 10 or 11 described systems, it is characterized in that, do not send the message that stops with reference to switching threshold to described the 3rd base station when described first base station and/or second base station can not produce unnecessary the switching according to the adjustment direction determining of sub-district handoff parameter, this message comprises the cell ID of described first base station and second base station.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| WO2013174173A1 (en) * | 2012-05-23 | 2013-11-28 | 华为技术有限公司 | Method and base station for determining unnecessary handoff |
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| WO2014180005A1 (en) * | 2013-05-10 | 2014-11-13 | 富士通株式会社 | Information configuration method, information sending method, and data transceiving control method and device thereof |
| CN107079322A (en) * | 2014-08-08 | 2017-08-18 | 瑞典爱立信有限公司 | Measurement report method of shutting down and the eNodeB using this method |
| US10536869B2 (en) | 2014-08-08 | 2020-01-14 | Telefonaktiebolaget Lm Ericcsson (Publ) | Measurement report stopping method and eNodeB using the same |
| US11438779B2 (en) | 2014-08-08 | 2022-09-06 | Telefonaktiebolaget Lm Ericsson (Publ) | Measurement report method and base station using the same in a radio access network |
| CN104883703A (en) * | 2015-06-19 | 2015-09-02 | 宇龙计算机通信科技(深圳)有限公司 | Method and system for network type control, and terminal |
| CN104883703B (en) * | 2015-06-19 | 2019-02-01 | 宇龙计算机通信科技(深圳)有限公司 | Control method, system and the terminal of network formats |
| CN110248388A (en) * | 2018-03-09 | 2019-09-17 | 中国移动通信集团设计院有限公司 | Penalty method after a kind of cell switching refusal |
| CN110248388B (en) * | 2018-03-09 | 2021-06-04 | 中国移动通信集团设计院有限公司 | Punishment method after cell switching rejection |
| CN111314967A (en) * | 2018-11-27 | 2020-06-19 | 大唐移动通信设备有限公司 | Switching method and device |
| CN111314967B (en) * | 2018-11-27 | 2021-03-19 | 大唐移动通信设备有限公司 | Switching method and device |
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