CN1710983A - Heterofrequency blind switch-over method in WCDMA system - Google Patents
Heterofrequency blind switch-over method in WCDMA system Download PDFInfo
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- CN1710983A CN1710983A CN 200410048779 CN200410048779A CN1710983A CN 1710983 A CN1710983 A CN 1710983A CN 200410048779 CN200410048779 CN 200410048779 CN 200410048779 A CN200410048779 A CN 200410048779A CN 1710983 A CN1710983 A CN 1710983A
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Abstract
The invention discloses method how to determine target sub zone to be switched in raised switching success ratio when network end is unable to obtain measured information carried out by UE for target sub zone in alien frequencies. The method includes steps: allocating neighboring areas and their priorities in alien frequencies for each sub zone of UMTS network; RNC controls report of UE, and stores reports in buffer; based on synthesis quality of current active set and condition of current load, RNC determines whether urgency switching is needed to trigger to; using some zones with better quality of signal in same frequency constitutes referential candidate set; fetching intersection between all sub zones in same frequency in referential candidate set and their neighboring areas in alien frequencies constitutes target sub zone set to be switched in alien frequencies; finally, RNC controls UN to carry out blind switching to the target sub zone set to be switched in alien frequencies.
Description
Technical field
The present invention relates to Wideband Code Division Multiple Access (WCDMA) WCDMA system handoff technique, be meant the alien frequencies blind switching method in a kind of WCDMA system especially.
Background technology
In the WCDMA system, work as user equipment (UE), promptly travelling carriage or terminal are left original Serving cell, and in the time of will entering another Serving cell, the process that new base station of chain route between former base station and the UE and the link between the UE replace is called switching.According to the foundation and the release conditions that link between UE and network, switching can be divided into: soft handover and direct-cut operation.Soft handover refer to when travelling carriage begins to get in touch with a new base station, not interrupt immediately with original base station between communicating by letter, soft handover is generally used between the CDMA Channel with frequency; And but direct-cut operation refers to have only a time switching of a Traffic Channel time spent generation, comprises with frequency, alien frequencies and different system and switches three kinds of situations.For the alien frequencies direct-cut operation, from implementation, can be divided into again based on the switching and the blind switching of measuring.
Common WCDMA alien frequencies switches the switching that all is based on measurement, promptly satisfy certain when pre-conditioned when the residing WCDMA of UE sub-district, as cover reason or load-reason, radio network controller (RNC) is measured possible one or more alien-frequency districts by signaling indication UE, UE reports RNC with measured value, RNC is according to measured value, and whether decision is switched and to which Target cell switched to Target cell.But in the switching of some special purpose, such as since the current area load higher, perhaps the speed that moves of UE is very fast and the signal quality of current area descends too fast, slower based on the common speed of measuring of switching, for this reason can be under the situation that can't obtain the Target cell metrical information, directly for UE specifies the Target cell that switches, the switching of this no metrical information is called blind switching by RNC.
,, then, seldom adopt at present based on regard to the switching of measuring with regard to traditional because cost is higher if adopt UE with double-receiver.And for the UE of single-receiver, generally need to start compact model and carry out different-frequency measure, so not only influence the capacity and the performance of system, but also can increase time delay for switching, in some cases, big or user moving speed is very fast as signal fluctuation, switch according to traditional mode based on measuring, often cause call drop because of deficiency of time.
For general blind handoff technique,, cause handover success rate lower because the complexity of wireless environment not necessarily is exactly the actual sub-district that will enter of user by the pre-configured blind switching target small area of RNC.
Summary of the invention
In view of this, the object of the present invention is to provide the alien frequencies blind switching method in a kind of WCDMA system, to improve the blind success rate for switching of alien frequencies.
In order to achieve the above object, when the network planning, be each cell configuration alien frequencies adjacent area of universal mobile telecommunications system UMTS network, described changing method comprises following steps:
A, RNC trigger urgent alien frequencies and switch;
The reference Candidate Set that b, generation are made of some better quality of signal co-frequency cells;
C, get common factor, constitute alien frequencies switching target small area collection with reference to the alien frequencies adjacent area of all co-frequency cells in the Candidate Set;
D, RNC control UE carries out the blind switching of alien frequencies to alien frequencies switching target small area collection.
In said method, trigger the condition that urgent alien frequencies switches among the described step a and be: the comprehensive quality that detects UE current active collection as RNC is worse than the current active collection quality threshold of setting, and the time that continues surpasses the permission time of setting.
In said method, trigger the condition that urgent alien frequencies switches among the described step a and be: the load that detects the current area at UE place as RNC continues to be higher than the load-threshold of setting, and network terminal needs the certain customers of this sub-district are switched to other alien-frequency district.
In said method, described step b comprises that all co-frequency cells of selecting current active to concentrate constitute with reference to Candidate Set.
In said method, described step b comprises that the optimum subdistrict of selecting current active to concentrate constitutes with reference to Candidate Set, and wherein the concentrated optimum subdistrict of current active is determined according to the measured value that UE reports by RNC.
In said method, further comprise before the described step a: RNC control UE reports and the measurement report of all co-frequency cells that buffer memory can measure, and writes down the time point that corresponding measurement report is buffered, and described step b comprises simultaneously:
B1, RNC obtain current system time, calculate the cache-time of each UMTS co-frequency cell measurement report;
The difference that the measured value of b2, the measurement report by calculating buffer memory deducts the product gained of cache-time and linear factor obtains cell signal quality mapping value, and sorts mapping value is descending;
B3, set one and then all sub-districts in the active set put into reference to Candidate Set with reference to the Candidate Set size, if the reference Candidate Set size that the number of cells in the active set equals to set, then with active set as the reference Candidate Set;
If the number of cells in the active set greater than reference Candidate Set size, then according to the sub-district in the ascending deletion active set of resulting mapping value among the step b2, equals with reference to the Candidate Set size up to remaining number of cells;
If the number of cells in the active set is less than reference Candidate Set size, then by the descending order of mapping value the sub-district in the non-active set is joined with reference in the Candidate Set, the sub-district number in the reference Candidate Set equals with reference to Candidate Set size or till handling all sub-districts that have measurement report.
Preferably, further comprise after the described step b1, sets a maximum effective time, abandon in the measurement report cache-time greater than the sub-district of the maximum effective time of setting.
Preferably, described step b2 comprises, sets one with reference to the Candidate Set thresholding, abandons the sub-district less than the reference Candidate Set thresholding of setting of mapping value in the measurement report.
In said method, during the network planning, specify the priority of alien frequencies neighboring interval, described step c further comprises simultaneously:
Whether the sub-district number during c1, judgement are occured simultaneously is 0, if be 0, be with reference to the configuration of the optimum subdistrict in Candidate Set blind switching target small area then by RNC, constituting alien frequencies switching target small area collection by this blind switching target small area then, is to be determined according to the measured value that UE reports by RNC with reference to the optimum subdistrict in the Candidate Set wherein;
If the sub-district number during c3 occurs simultaneously is not 0, then be the cell configuration priority in occuring simultaneously by the following method: at first determine with reference to the optimum subdistrict in the Candidate Set; Find out all alien frequencies adjacent areas of this optimum subdistrict then, according to the priority that is the alien frequencies adjacent area appointment of this optimum subdistrict, the priority of the sub-district during configuration is occured simultaneously is to be determined according to the measured value that UE reports by RNC with reference to the optimum subdistrict in the Candidate Set wherein;
C4, alien frequencies switching target small area collection thresholding of setting, if the sub-district number in occuring simultaneously is greater than the alien frequencies switching target small area collection thresholding of setting, then delete successively, till the sub-district number in occuring simultaneously equals alien frequencies switching target small area collection thresholding according to priority order from low to high.
In said method, described steps d comprises:
D1, RNC concentrate the Node B at place, sub-district to initiate Radio Link by signaling to the alien frequencies switching target small area and set up request;
D2, RNC are eating dishes without rice or wine to send handoff request to UE, and switch all sub-districts that require UE successfully to set up Radio Link simultaneously in steps d 1;
D3, RNC wait for the synchronous time, to collect the Synchronization Status Message of each wireless links;
Do not report synchronous Radio Link in d4, the deletion steps d 3.
Preferably, further comprise after the described steps d 2: RNC waits for certain hour, is made as and waits for settling time, sets up successful wireless link information to collect.
In sum, the present invention can not in time obtain under the prerequisite of UE different-frequency measure reporting at RNC, the method of common factor is got in utilization to the alien frequencies adjacent area of a plurality of co-frequency cells, realized the blind switching of alien-frequency district, the many useless Signalling exchanges of internal system have been avoided, thereby under the prerequisite that guarantees the switching accuracy, reduced burden, switching time and the part signaling time delay of system, reduced risk of dropped calls.In addition, the present invention initiates to switch to a plurality of alien-frequency districts simultaneously, has solved the high problem of traditional blind switching cutting off rate, has guaranteed handover success rate.
Description of drawings
Fig. 1 is an overview flow chart of the present invention;
Fig. 2 is the flow chart of the specific embodiment of the invention;
Fig. 3 is the flow chart that generates mapping value in the specific embodiment of the invention;
Fig. 4 is the flow chart that generates in the specific embodiment of the invention with reference to Candidate Set;
Fig. 5 is the flow chart that generates alien frequencies switching target small area collection in the specific embodiment of the invention;
Fig. 6 is the flow chart that RNC control UE initiates the blind switching of alien frequencies in the specific embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Shown in Figure 1 as overview flow chart of the present invention, at first in step 101, when the network planning, be each cell configuration alien frequencies adjacent area of universal mobile telecommunications system UMTS network, and specify the priority of alien frequencies neighboring interval.
In step 102, RNC control UE reports and the measurement report of all co-frequency cells that buffer memory can measure, and writes down the time point that corresponding measurement report is buffered, and wherein the method for RNC control UE reporting measurement reports can be cycle report, time report etc.;
In step 103, RNC triggers urgent alien frequencies and switches;
In step 104, according to the mapping value of the measurement report of buffer memory and linear factor conversion cell signal quality, and sort mapping value is descending, mapping value is big more, and the signal quality of sub-district is just good more;
In step 105, generate the reference Candidate Set that constitutes by Nref co-frequency cell of reference Candidate Set thresholding, be configurable parameter wherein with reference to Candidate Set thresholding Nref;
In step 106, common factor is got in the alien frequencies adjacent area of all co-frequency cells in the reference Candidate Set, constitute alien frequencies switching target small area collection.
In step 107, RNC control UE initiates the blind switching of alien frequencies to alien frequencies switching target small area collection;
Overall procedure of the present invention has been described above, and the present invention is described in detail below in conjunction with specific embodiment.
The flow process of the specific embodiment of the invention specifically may further comprise the steps as shown in Figure 2:
At first, when the network planning, be each cell configuration alien frequencies adjacent area of UMTS network, and specify the priority of alien frequencies neighboring interval in step 201;
In step 202, RNC control UE reports and the measurement report of all co-frequency cells that buffer memory can measure, and writes down the time point that corresponding measurement report is buffered, and wherein the method for RNC control UE reporting measurement reports can be cycle report, time report etc.;
In step 203, RNC triggers urgent alien frequencies and switches;
The condition that triggers can be that the comprehensive quality that detects UE current active collection as RNC is worse than a certain thresholding, and continues for some time; Also can be, the load that detects sub-district, UE place as RNC continues to be higher than a certain thresholding, and in order to realize the maximization of network capacity, should make the load balance of different districts/frequency as far as possible, needs the certain customers of this sub-district are switched to other alien-frequency district etc.
Wherein, the physical quantity of the comprehensive quality of tolerance current active collection can be: Common Pilot Channel received signal code power CPICH RSCP, Common Pilot Channel signal to noise ratio CPICH Ec/No, path loss PATHLOSS, on/downward special physical channel DPCH transmitting power, block error rate BLER, error rate BER etc.
The method of tolerance current active collection comprehensive quality can be: relevant measurement can be adopted the measured value of optimum subdistrict to pilot tone, and the transmitting power of perhaps using downward special physical channel DPCH reaches the percentage of maximum transmission power and recently weighs.
The method of tolerance cell load can be: if consider ascending load, can use received signal intensity indication RSSI; If the consideration down load can use descending total transmitting power to weigh.
In step 204, according to the measurement report of buffer memory and the mapping value of linear factor conversion cell signal quality, and according to mapping value sequence arrangement mapping value from high to low, mapping value is high more, and the signal quality of sub-district is just good more.As shown in Figure 3, specifically referring to step 301～305;
In step 205, generate the reference Candidate Set that constitutes by Nref co-frequency cell of reference Candidate Set thresholding, be configurable parameter wherein with reference to Candidate Set thresholding Nref.Specifically as shown in Figure 4, if the number of cells that makes the current active collection be comprised is Nas, if Nas=Nref then, then with the current active collection as the reference Candidate Set;
If Nas＜Nref then joins the sub-district in the non-active set with reference in the Candidate Set by the descending order of mapping value, the sub-district number in the reference Candidate Set equals Nref or handles till all sub-districts that have measurement report;
If Nas＞Nref is according to sub-district in the mapping value order deletion active set from small to large, till the number of residue sub-district is Nref in the reference Candidate Set;
In step 206, common factor is got in the alien frequencies adjacent area of all co-frequency cells in the reference Candidate Set, constitute alien frequencies switching target small area collection.As shown in Figure 5, specifically referring to step 501～504;
In step 207, RNC control UE initiates the blind switching of alien frequencies to alien frequencies switching target small area collection.As shown in Figure 6, specifically referring to step 601～605.
Above-mentioned is the basic step of specific embodiments of the invention, below the individual steps in the specific embodiment of the invention is elaborated.
As shown in Figure 3, the step 204 in the specific embodiments of the invention specifically comprises following steps:
In step 301, obtain current system time, the cache-time of each UMTS co-frequency cell measured value, the i.e. time point that cache-time=current system time-measurement report is buffered in the measurement report of calculating RNC buffer memory;
In step 302, abandon the measurement report cache-time greater than the maximum sub-district of effective time, be configurable parameter wherein maximum effective time;
In step 303, because it is ageing that same-frequency measure reporting has, therefore need be according to the measured value and the current cell signal quality mapping value of linear factor conversion of the measurement report of buffer memory: mapping value=cell measurement value-cache-time (s) * linear factor (dB/s).Wherein, the effect of linear factor is the estimation UE measured signal strengths rate of decay in time, unit is dB/s, the value of this parameter mainly is to dispose according to the signal fadeout feature of sub-district environment of living in and the translational speed of UE, when moving with the speed of 100km/h as UE, its distance that moved in 2 seconds is about 50m.The path-loss difference at macrocell modal distance base station 400m and 450m place is 1.92dB, and linear factor can be similar to and be taken as 1dB/s thus;
In step 304, abandon the sub-district of mapping value less than reference Candidate Set thresholding, be configurable parameter wherein with reference to the Candidate Set thresholding;
In step 305, by the descending ordering of mapping value, the sub-district that signal quality is best is represented in first sub-district.
As shown in Figure 5, the step 206 in the specific embodiments of the invention specifically comprises following steps:
In step 501, common factor is got in the alien frequencies adjacent area of all co-frequency cells in the reference Candidate Set;
In step 502, if the sub-district number in occuring simultaneously is 0, be with reference to the configuration of the optimum subdistrict in Candidate Set blind switching target small area then by RNC, with this blind switching target small area as alien frequencies switching target small area collection;
In step 503,, then be the cell configuration priority in occuring simultaneously if the sub-district number in occuring simultaneously is not 0.Collocation method is: determine at first that with reference to the optimum subdistrict in the Candidate Set optimum subdistrict is to be determined according to the measured value that UE reports by RNC.Finding out all alien frequencies adjacent areas of this optimum subdistrict then, according to the priority of the alien frequencies adjacent area of this optimum subdistrict of appointment in the step 101, is the cell configuration priority in occuring simultaneously;
In step 504, if the sub-district number in occuring simultaneously is then deleted according to priority order from low to high successively greater than switching target small area collection size, till number reached switching target small area collection size, wherein switching target small area collection size was a configurable parameter.
As shown in Figure 6, the step 207 in the specific embodiments of the invention specifically comprises following steps,
In step 601, RNC concentrates the Node B at place, sub-district to initiate Radio Link by signaling to the alien frequencies switching target small area and sets up request;
In step 602, RNC waits for certain hour, is made as to wait for settling time, sets up successful wireless link information to collect, and waits for that wherein be configurable parameter settling time;
In step 603, RNC is eating dishes without rice or wine to send handoff request to UE, and switch all sub-districts that require UE successfully to set up Radio Link simultaneously in step 107;
In step 604, RNC waits for certain hour, is made as to wait for lock in time, to collect the Synchronization Status Message of each wireless links, waits for that wherein be configurable parameter lock in time;
In step 605, do not report synchronous Radio Link in the deletion step 603.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (11)
1, the alien frequencies blind switching method in a kind of WCDMA system is characterized in that, when the network planning, is each cell configuration alien frequencies adjacent area of universal mobile telecommunications system UMTS network; Described changing method may further comprise the steps:
A, radio network controller (RNC) trigger urgent alien frequencies and switch;
The reference Candidate Set that b, generation are made of some better quality of signal co-frequency cells;
C, get common factor, constitute alien frequencies switching target small area collection with reference to the alien frequencies adjacent area of all co-frequency cells in the Candidate Set;
D, RNC control user equipment (UE) carries out the blind switching of alien frequencies to alien frequencies switching target small area collection.
2, the alien frequencies blind switching method in the WCDMA according to claim 1 system, it is characterized in that, triggering the condition that urgent alien frequencies switches among the described step a is: the comprehensive quality that detects UE current active collection as RNC is worse than the current active collection quality threshold of setting, and the time that continues surpasses the permission time of setting.
3, the alien frequencies blind switching method in the WCDMA according to claim 1 system, it is characterized in that, triggering the condition that urgent alien frequencies switches among the described step a is: the load that detects the current area at UE place as RNC continues to be higher than the load-threshold of setting, and network terminal needs the certain customers of this sub-district are switched to other alien-frequency district.
4, the alien frequencies blind switching method in the WCDMA according to claim 1 system is characterized in that, described step b comprises that all co-frequency cells of selecting current active to concentrate constitute with reference to Candidate Set.
5, the alien frequencies blind switching method in the WCDMA according to claim 1 system, it is characterized in that, described step b comprises that the optimum subdistrict of selecting current active to concentrate constitutes with reference to Candidate Set, and wherein the concentrated optimum subdistrict of current active is determined according to the measured value that UE reports by RNC.
6, the alien frequencies blind switching method in the WCDMA according to claim 1 system, it is characterized in that, further comprise before the described step a: RNC control UE reports and the measurement report of all co-frequency cells that buffer memory can measure, and write down the time point that corresponding measurement report is buffered, described step b comprises simultaneously:
B1, RNC obtain current system time, and calculate the cache-time of each UMTS co-frequency cell measurement report according to following formula,
The time point that cache-time=current system time-measurement report is buffered;
The difference that the measured value of b2, the measurement report by calculating buffer memory deducts the product gained of cache-time and linear factor obtains cell signal quality mapping value, and sorts mapping value is descending;
B3, set one and then all sub-districts in the active set put into reference to Candidate Set with reference to the Candidate Set size, if the reference Candidate Set size that the number of cells in the active set equals to set, then with active set as the reference Candidate Set;
If the number of cells in the active set greater than reference Candidate Set size, then according to the sub-district in the ascending deletion active set of resulting mapping value among the step b2, equals with reference to the Candidate Set size up to remaining number of cells;
If the number of cells in the active set is less than reference Candidate Set size, then by the descending order of mapping value the sub-district in the non-active set is joined with reference in the Candidate Set, the sub-district number in the reference Candidate Set equals with reference to Candidate Set size or till handling all sub-districts that have measurement report.
7, the alien frequencies blind switching method in the WCDMA according to claim 6 system is characterized in that, further comprises after the described step b1, sets a maximum effective time, abandons in the measurement report cache-time greater than the sub-district of the maximum effective time of setting.
8, the alien frequencies blind switching method in the WCDMA according to claim 6 system is characterized in that described step b2 comprises, sets one with reference to the Candidate Set thresholding, abandons in the measurement report mapping value less than the sub-district of the reference Candidate Set thresholding of setting.
9, the alien frequencies blind switching method in the WCDMA according to claim 1 system is characterized in that, during the network planning, specifies the priority of alien frequencies neighboring interval, and described step c further comprises simultaneously:
Whether the sub-district number during c1, judgement are occured simultaneously is 0, if be 0, be with reference to the configuration of the optimum subdistrict in Candidate Set blind switching target small area then by RNC, constituting alien frequencies switching target small area collection by this blind switching target small area then, is to be determined according to the measured value that UE reports by RNC with reference to the optimum subdistrict in the Candidate Set wherein;
If the sub-district number during c3 occurs simultaneously is not 0, then be the cell configuration priority in occuring simultaneously by the following method: at first determine with reference to the optimum subdistrict in the Candidate Set; Find out all alien frequencies adjacent areas of this optimum subdistrict then, according to the priority that is the alien frequencies adjacent area appointment of this optimum subdistrict, the priority of the sub-district during configuration is occured simultaneously is to be determined according to the measured value that UE reports by RNC with reference to the optimum subdistrict in the Candidate Set wherein;
C4, alien frequencies switching target small area collection thresholding of setting, if the sub-district number in occuring simultaneously is greater than the alien frequencies switching target small area collection thresholding of setting, then delete successively, till the sub-district number in occuring simultaneously equals alien frequencies switching target small area collection thresholding according to priority order from low to high.
10, the alien frequencies blind switching method in the WCDMA according to claim 1 system is characterized in that described steps d comprises:
D1, RNC concentrate the NodeB at place, sub-district to initiate Radio Link by signaling to the alien frequencies switching target small area and set up request;
D2, RNC are eating dishes without rice or wine to send handoff request to UE, and switch all sub-districts that require UE successfully to set up Radio Link simultaneously in steps d 1;
D3, RNC wait for a lock in time of setting, and collect the Synchronization Status Message of each wireless links in this time;
Do not report synchronous Radio Link in d4, the deletion steps d 3.
11, the alien frequencies blind switching method in the WCDMA according to claim 10 system is characterized in that, further comprises after the described steps d 2: RNC waits for a settling time of setting, and collects in this time and set up successful wireless link information.
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| CNB2004100487790A CN100493254C (en) | 2004-06-18 | 2004-06-18 | Heterofrequency blind switch-over method in WCDMA system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111060B (en) * | 2006-07-18 | 2010-04-14 | 中兴通讯股份有限公司 | Method for adjacent area configuration optimization in wireless network surroundings |
| CN101141777B (en) * | 2007-06-26 | 2010-09-08 | 中兴通讯股份有限公司 | Automatic adjacent section planning method |
| CN101553001B (en) * | 2008-03-31 | 2011-04-06 | 中兴通讯股份有限公司 | Neighboring region automatic detection and adjustment method of mobile communication terminal |
| CN102045808A (en) * | 2010-12-23 | 2011-05-04 | 华为技术有限公司 | Method for guiding terminal to reside and access network equipment |
| WO2014067066A1 (en) * | 2012-10-30 | 2014-05-08 | 华为技术有限公司 | Load balancing method and device |
| CN107071198A (en) * | 2007-04-30 | 2017-08-18 | 交互数字技术公司 | WTRU and the reselecting method for the WTRU |
| CN111698748A (en) * | 2020-06-02 | 2020-09-22 | 上海闻泰信息技术有限公司 | Network blind switching method, device, base station equipment and storage medium |
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2004
- 2004-06-18 CN CNB2004100487790A patent/CN100493254C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111060B (en) * | 2006-07-18 | 2010-04-14 | 中兴通讯股份有限公司 | Method for adjacent area configuration optimization in wireless network surroundings |
| CN107071198A (en) * | 2007-04-30 | 2017-08-18 | 交互数字技术公司 | WTRU and the reselecting method for the WTRU |
| CN101141777B (en) * | 2007-06-26 | 2010-09-08 | 中兴通讯股份有限公司 | Automatic adjacent section planning method |
| CN101553001B (en) * | 2008-03-31 | 2011-04-06 | 中兴通讯股份有限公司 | Neighboring region automatic detection and adjustment method of mobile communication terminal |
| CN102045808A (en) * | 2010-12-23 | 2011-05-04 | 华为技术有限公司 | Method for guiding terminal to reside and access network equipment |
| WO2014067066A1 (en) * | 2012-10-30 | 2014-05-08 | 华为技术有限公司 | Load balancing method and device |
| CN111698748A (en) * | 2020-06-02 | 2020-09-22 | 上海闻泰信息技术有限公司 | Network blind switching method, device, base station equipment and storage medium |
| CN111698748B (en) * | 2020-06-02 | 2022-05-03 | 上海闻泰信息技术有限公司 | Network blind switching method, device, base station equipment and storage medium |
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