CN102857964A - Terminal switching method and device - Google Patents
Terminal switching method and device Download PDFInfo
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- CN102857964A CN102857964A CN2011101760272A CN201110176027A CN102857964A CN 102857964 A CN102857964 A CN 102857964A CN 2011101760272 A CN2011101760272 A CN 2011101760272A CN 201110176027 A CN201110176027 A CN 201110176027A CN 102857964 A CN102857964 A CN 102857964A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
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Abstract
The invention discloses a terminal switching method and device for avoiding service interruption of a terminal. The method comprises the following steps of: after a source eNB (evolved Node B) determines that UE (user equipment) needs switching, determining the number N of the switching commands sent to the UE according to a measurement report reported by the UE; and in the switching process of the UE, sending N switching commands to the UE. The device is located in the eNB and comprises a switching command number determining module and a switching command sending module. The method and device disclosed by the embodiment of the invention judge the signal quality of a service cell and a neighbor and decide whether to send multiple switching commands for the same switching so as to ensure that the UE can receive the switching command in time to increase the switching success rate; and moreover, the UE can be synchronized in the target cell as soon as possible so as to reduce the switching delay and enhance the user experience in the switching process.
Description
Technical field
The present invention relates to moving communicating field, be specifically related to method and device that a kind of terminal is switched.
Background technology
The mode that the control of LTE (Long Term Evolution, Long Term Evolution) system Adoption Network, UE assist in order to realize harmless seamless switching, needs reduce break period, avoids data degradation as far as possible.
Switching flow is as follows:
1, according to RRC (Radio Resource Control, Radio Resource control) measurement of reallocation message regulation reports criterion, UE (User Equipment, user terminal, be called for short terminal) send measurement report (Measurement Report) message to evolution NodeB (Evolved NodeB is called for short eNB);
2, source eNodeB determines switching target small area based on measurement report and RRM (RRM) algorithm, and the contextual information (Ue Context) of UE is sent to the eNodeB of switching target small area with handover request;
3, target eNode B will be pre-assigned to C-RNTI (Cell Radio Network Temporary Identifier/Identity, Cell-RNTI) and other parameters (access parameter, SIB (system information block) etc.) of switching UE and return to source eNodeB in context affirmation (Context Confirm) message, source eNodeB is after receiving context acknowledgement message, to target eNode B, source eNodeB sends switching command (HandOver Command) to UE with package forward;
4, UE receives switching command, according to the Target Cell Identifier that carries in the switching command, sets up uplink synchronous from the cell-of-origin disengaging and with target eNB;
5, target eNode B is returned TA (Timing Advance) and is indicated the resource location that distributes to UE, and UE returns to switch to target eNode B and finishes (HandOver Comfirm) message;
6, target eNode B is finished to source eNodeB indication switching, and source eNodeB empties the data that are forwarded to target eNode B.
But in actual moving process, usually occur that UE can not receive switching command and the situation that causes service disconnection.
Summary of the invention
The technical problem to be solved in the present invention provides method and the device that a kind of terminal is switched, and avoids the service disconnection of terminal.
For solving the problems of the technologies described above, the invention provides the method that a kind of terminal is switched, comprising:
Source evolved base station (eNB) is determined to the number N of the switching command of described UE transmission according to the measurement report that described UE reports after definite subscriber equipment (UE) needs to switch; In the handoff procedure of described UE, send N switching command to described UE.
Further, the described measurement report that reports according to described UE is determined to comprise to the number N of the switching command of described UE transmission:
The measurement event that reports according to described UE is determined the number N of the switching command that sends to described UE, and perhaps, the measurement event that reports according to described UE and the signal quality of current service cell are determined the number N of the switching command that sends to described UE.
Further, the described measurement event that reports according to described UE is determined the number N of the switching command that sends to described UE, comprising: when the measurement event that reports as described UE is A5, determine the switching command number N that sends to UE 〉=2.
Further, N=3.
Further, the signal quality of the described measurement event that reports according to described UE and current service cell is determined the number N of the switching command that sends to described UE, comprising:
The measurement event that reports as described UE is A3, and the signal quality of the current service cell that reports of UE is then determined N=A greater than the first thresholding; Perhaps
The measurement event that reports as described UE is A3, and the signal quality of the current service cell that reports of UE greater than the second thresholding, is then determined N=B less than the first thresholding; Perhaps
The measurement event that reports as described UE is A3, and the signal quality of the current service cell that reports of UE is then determined N=C less than the second thresholding;
The first thresholding＞second thresholding＞the 3rd thresholding wherein, described A＞B＞C 〉=1.
Further, the signal quality of described current service cell comprises: Reference Signal Received Power (RSRP) or Reference Signal Received Quality (RSRQ).
For solving the problems of the technologies described above, the device that the present invention also provides a kind of terminal to switch is positioned at evolved base station (eNB), comprises switching command number determination module and switching command sending module, wherein:
Described switching command number determination module is used for after definite subscriber equipment (UE) needs to switch, and determines to the number N of the switching command of described UE transmission according to the measurement report that described UE reports;
Described switching command sending module is used for the handoff procedure at described UE, sends N switching command to described UE.
Further, described switching command number determination module is to determine to the number N of the switching command of UE transmission for the measurement report that reports according to UE in the following ways:
The measurement event that reports according to described UE is determined the number N of the switching command that sends to described UE, and perhaps, the measurement event that reports according to described UE and the signal quality of current service cell are determined the number N of the switching command that sends to described UE.
Further, described switching command number determination module is the number N that determines the switching command that sends to UE for the measurement event that reports according to UE in the following ways: when the measurement event that reports as UE was A5, described switching command number determination module was determined the switching command number N that sends to UE 〉=2.
Further, N=3.
Further, described switching command number determination module is the number N that determines the switching command that sends to UE for the signal quality of the measurement event that reports according to UE in the following ways and current service cell:
The measurement event that reports as UE is A3, and the signal quality of the current service cell that reports of UE is then determined N=A greater than the first thresholding; Perhaps
The measurement event that reports as UE is A3, and the signal quality of the current service cell that reports of UE greater than the second thresholding, is then determined N=B less than the first thresholding; Perhaps
The measurement event that reports as UE is A3, and the signal quality of the current service cell that reports of UE is then determined N=C less than the second thresholding;
The first thresholding＞second thresholding＞the 3rd thresholding wherein, described A＞B＞C 〉=1.
Further, the signal quality of described current service cell comprises: Reference Signal Received Power (RSRP) or Reference Signal Received Quality (RSRQ).
Embodiment of the invention method and apparatus on the basis of existing technology, for once switching together, signal quality by judgement Serving cell and adjacent area, determine whether to issue a plurality of switching commands, guarantee that UE can in time receive switching command, increase handover success rate, make UE synchronous at Target cell as early as possible, thereby reduce handover delay, the user who strengthens in the handoff procedure experiences.
Description of drawings
Fig. 1 is the switching command setting procedure figure of measurement event when being the A3 event;
Fig. 2 is that the embodiment of the invention 1 switching command issues process chart;
Fig. 3 is the switching command setting procedure figures of the embodiment of the invention 3 measurement event when being the A5 event.
Embodiment
Existing switching flow analysis is found, after source eNodeB issues switching command to UE, at this moment UE is in cell edge usually, signal quality is relatively poor, the very possible re-transmission that HARQ (mixed automatic retransfer) or RLC (Radio Link control) layer occur is easy to occur UE and can not receive switching command or receive switching command the excessively phenomenon in evening.And because the LTE system switches and belongs to rear switching, when sending switching command to UE, target eNode B has been distributed resource to UE, if UE can not receive switching command or receives that switching command is excessively late, just can't be synchronized to Target cell, thereby causes service disconnection.
For this situation of prior art, present embodiment proposes following scheme:
Source eNB determines to the number N of the switching command of described UE transmission according to the measurement report that described UE reports after definite UE need to switch; In the handoff procedure of described UE, send N switching command to described UE.N is 〉=1 positive integer.
Rlc layer retransmits or MAC layer HARQ retransmits if first switching command is owing to the reasons such as cell signal quality have occured, if at this moment new switching command is arranged, new switching command just might be received by UE than the switching command that retransmits is more Zao, make UE synchronous at Target cell as early as possible, thereby reduce handover delay, avoid service disconnection, the user who strengthens in the handoff procedure experiences.
Preferably, source eNB can determine to the number N of the switching command of described UE transmission according to the measurement event that described UE reports, perhaps, the measurement event that reports according to described UE and the signal quality of current service cell are determined the number N of the switching command that sends to described UE.
Particularly, for example: what UE reported is the A5 measurement event, is lower than a thresholding and the A5 measurement event is defined as the Serving cell signal, and neighboring area signal is higher than a thresholding.At this moment this UE Serving cell poor signal quality is described, neighboring cell signal quality is good, and then definite switching command number N that sends to UE 〉=2 are preferably N=3, namely issue 3 switching commands to UE.
If what UE reported is the A3 measurement event, and the A3 measurement event is defined as the difference of neighboring cell signal quality parameter and Serving cell signal quality parameter greater than a thresholding.At this moment the Serving cell signal is not necessarily very poor, the signal quality of the current service cell that then further reports according to UE determines to send the number of switching command, principle is: if the Serving cell signal is fine, switching command does not just need repeatedly to send, otherwise repeatedly issues switching command.Particularly:
The measurement event that reports as UE is A3, and the signal quality of the current service cell that reports of UE is then determined N=A greater than the first thresholding; Perhaps
The measurement event that reports as UE is A3, and the signal quality of the current service cell that reports of UE less than the first thresholding greater than the second thresholding, then determine N=B; Perhaps
The measurement event that reports as UE is A3, and the signal quality of the current service cell that reports of UE is then determined N=C less than the second thresholding;
The first thresholding＞second thresholding＞the 3rd thresholding wherein, described A＞B＞C 〉=1.Preferably the span of A is [3,5], and the span of B is [2,3]
Be illustrated as example as the signal quality of current service cell take RSRP (Reference Signal Received Power):
If the RSRP of UE is greater than 100dBm, then this UE may be positioned at cell edge, determines N=3;
If the RSRP of UE is less than 100dBm but greater than 90dBm, then this UE may between center of housing estate and cell edge, determine N=2;
If the RSRP of UE is less than 90dBm, then this UE may be positioned at center of housing estate, determines N=1.
Can adopt as shown in Figure 1 flow process realization during execution, but also can adopt other flow processs to realize.
Except adopting RSRP, also can adopt in other embodiments RSRQ (Reference Signal Received Quality) to be used as the signal quality of current service cell.Employed first, second, third threshold value when adopting RSRQ can be with reference to the threshold value of RSRP.
The device that is positioned at eNB of realizing said method comprises switching command number determination module and switching command sending module, wherein:
Described switching command number determination module is used for after definite UE need to switch, and determines to the number N of the switching command of this UE transmission according to the measurement report that this UE reports;
Described switching command sending module is used for the handoff procedure at this UE, sends N switching command to this UE.
Preferably, described switching command number determination module is to determine to the number N of the switching command of UE transmission for the measurement report that reports according to UE in the following ways: determine to the number N of the switching command of described UE transmission according to the measurement event that described UE reports, perhaps, the measurement event that reports according to described UE and the signal quality of current service cell are determined the number N of the switching command that sends to described UE.
Preferably, described switching command number determination module is the number N that determines the switching command that sends to UE for the measurement event that reports according to UE in the following ways: when the measurement event that reports as UE is A5, described switching command number determination module is determined to the switching command number N of UE transmission 〉=2, preferred N=3.
Preferably, described switching command number determination module is the number N that determines the switching command that sends to UE for the signal quality of the measurement event that reports according to UE in the following ways and current service cell:
The measurement event that reports as UE is A3, and the signal quality of the current service cell that reports of UE is then determined N=A greater than the first thresholding; Perhaps
The measurement event that reports as UE is A3, and the signal quality of the current service cell that reports of UE greater than the second thresholding, is then determined N=B less than the first thresholding; Perhaps
The measurement event that reports as UE is A3, and the signal quality of the current service cell that reports of UE is then determined N=C less than the second thresholding;
The first thresholding＞second thresholding＞the 3rd thresholding wherein, described A＞B＞C 〉=1.
For making the purpose, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing embodiments of the invention are elaborated.Need to prove that in the situation of not conflicting, the embodiment among the application and the feature among the embodiment be combination in any mutually.
Embodiment 1:
Step 110, UE sends measurement report to eNodeB;
Step 120, eNodeB determines switching target small area based on measurement report and RRM algorithm, and the contextual information of UE is sent to the eNodeB of switching target small area with handover request;
Step 130, target eNode B will be pre-assigned to C-RNTI and other parameters (access parameter, SIB etc.) of switching UE and return to source eNodeB in context acknowledgement message;
Step 140, source eNodeB arrives target eNode B with package forward after receiving context acknowledgement message;
Step 150, source eNodeB judges that the measurement event in the UE measurement report is A3, and the RSRP value of the Serving cell that reports of UE determines then that greater than 100dBm the number of times of transmission switching command is 3 times;
Step 160, source eNodeB sends switching command according to the transmission times of determining to UE;
Particularly, source eNodeB can adopt timer to realize that in conjunction with the mode of counter for example source eNodeB can arrange switching command transmitting counter (HoTime) and add up to 3, and the switching command retransmission timer that time span is Ts, adopt flow process shown in Figure 2 to realize, comprising:
Step a, source eNodeB sends a switching command to UE, and the switching command transmitting counter adds one;
Step b starts the switching command retransmission timer;
Step c judges whether the switching command retransmission timer is overtime, if so, and execution in step d, if not, return step c;
Steps d judges whether the switching command transmitting counter equals switching command transmitting counter sum, if so, then finishes, if not, return step a.
The employing timer is realized only giving an example for a kind of in conjunction with the mode of counter in the present embodiment, in other embodiments, can adopt other known methods to realize.
Step 170, UE receives switching command, starts the uplink synchronous process of target eNode B, obtains up TA to target eNode B simultaneously;
Step 180, the resource location that target eNode B is returned TA and distributed to the UE indication to UE, UE are returned to switch to target eNode B and are finished (HandOver Comfirm) message;
Step 190, target eNode B is finished to source eNodeB indication switching, and source eNodeB empties the data that are forwarded to target eNode B.
Embodiment 2:
Step 210, UE sends measurement report to eNodeB;
Step 220, eNodeB determines switching target small area based on measurement report and RRM algorithm, and the contextual information of UE is sent to the eNodeB of switching target small area with handover request;
Step 230, target eNode B will be pre-assigned to C-RNTI and other parameters (access parameter, SIB etc.) of switching UE and return to source eNodeB in context acknowledgement message;
Step 240, source eNodeB arrives target eNode B with package forward after receiving context acknowledgement message;
Step 250, source eNodeB judges that the measurement event in the UE measurement report is A3, and the RSRP value of the Serving cell that reports of UE determines then that less than 90dBm the number of times of transmission switching command is 1 time;
Step 260, source eNodeB sends switching command according to the transmission times of determining to UE;
Concrete operations are referring to the description among the embodiment 1.
Step 270, UE receives switching command, starts the uplink synchronous process of target eNode B, obtains up TA to target eNode B simultaneously;
Step 280, the resource location that target eNode B is returned TA and distributed to the UE indication to UE, UE returns handoff completion message to target eNode B;
Step 290, target eNode B is finished to source eNodeB indication switching, and source eNodeB empties the data that are forwarded to target eNode B.
Embodiment 3:
Step 310, UE sends measurement report to eNodeB;
Step 320, eNodeB determines switching target small area based on measurement report and RRM algorithm, and the contextual information of UE is sent to the eNodeB of switching target small area with handover request;
Step 330, target eNode B will be pre-assigned to C-RNTI and other parameters (access parameter, SIB etc.) of switching UE and return to source eNodeB in context acknowledgement message;
Step 340, source eNodeB arrives target eNode B with package forward after receiving context acknowledgement message;
Step 350, source eNodeB judges that the measurement event in the UE measurement report is A5, determines that then the number of times of transmission switching command is 3 times;
The flow process of switching command is set as shown in Figure 3.
Step 360, source eNodeB sends switching command according to the transmission times of determining to UE;
Concrete operations are referring to the description among the embodiment 1.
Step 370, UE receives switching command, starts the uplink synchronous process of target eNode B, obtains up TA to target eNode B simultaneously;
Step 380, the resource location that target eNode B is returned TA and distributed to the UE indication to UE, UE returns handoff completion message to target eNode B;
Step 390, target eNode B is finished to source eNodeB indication switching, and source eNodeB empties the data that are forwarded to target eNode B.
One of ordinary skill in the art will appreciate that all or part of step in the said method can come the instruction related hardware to finish by program, described program can be stored in the computer-readable recording medium, such as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly; the present invention also can have other various embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the method switched of a terminal comprises:
Source evolved base station (eNB) is determined to the number N of the switching command of described UE transmission according to the measurement report that described UE reports after definite subscriber equipment (UE) needs to switch; In the handoff procedure of described UE, send N switching command to described UE.
2. the method for claim 1 is characterized in that:
The described measurement report that reports according to described UE is determined to comprise to the number N of the switching command of described UE transmission:
The measurement event that reports according to described UE is determined the number N of the switching command that sends to described UE, and perhaps, the measurement event that reports according to described UE and the signal quality of current service cell are determined the number N of the switching command that sends to described UE.
3. method as claimed in claim 2 is characterized in that:
The described measurement event that reports according to described UE is determined to comprise to the number N of the switching command of described UE transmission:
When the measurement event that reports as described UE is A5, determine the switching command number N that sends to UE 〉=2, preferred N=3.
4. method as claimed in claim 2 is characterized in that:
The signal quality of the described measurement event that reports according to described UE and current service cell is determined the number N of the switching command that sends to described UE, comprising:
The measurement event that reports as described UE is A3, and the signal quality of the current service cell that reports of UE is then determined N=A greater than the first thresholding; Perhaps
The measurement event that reports as described UE is A3, and the signal quality of the current service cell that reports of UE greater than the second thresholding, is then determined N=B less than the first thresholding; Perhaps
The measurement event that reports as described UE is A3, and the signal quality of the current service cell that reports of UE is then determined N=C less than the second thresholding;
The first thresholding＞second thresholding＞the 3rd thresholding wherein, described A＞B＞C 〉=1.
5. method as claimed in claim 4 is characterized in that:
The signal quality of described current service cell comprises: Reference Signal Received Power (RSRP) or Reference Signal Received Quality (RSRQ).
6. the device that terminal is switched is positioned at evolved base station (eNB), comprises switching command number determination module and switching command sending module, wherein:
Described switching command number determination module is used for after definite subscriber equipment (UE) needs to switch, and determines to the number N of the switching command of described UE transmission according to the measurement report that described UE reports;
Described switching command sending module is used for the handoff procedure at described UE, sends N switching command to described UE.
7. device as claimed in claim 6 is characterized in that:
Described switching command number determination module is to determine to the number N of the switching command of UE transmission for the measurement report that reports according to UE in the following ways:
The measurement event that reports according to described UE is determined the number N of the switching command that sends to described UE, and perhaps, the measurement event that reports according to described UE and the signal quality of current service cell are determined the number N of the switching command that sends to described UE.
8. device as claimed in claim 7 is characterized in that:
Described switching command number determination module is to determine to the number N of the switching command of UE transmission for the measurement event that reports according to UE in the following ways:
When the measurement event that reports as UE was A5, described switching command number determination module was determined the switching command number N that sends to UE 〉=2, preferred N=3.
9. device as claimed in claim 7 is characterized in that:
Described switching command number determination module is the number N that determines the switching command that sends to UE for the signal quality of the measurement event that reports according to UE in the following ways and current service cell:
The measurement event that reports as UE is A3, and the signal quality of the current service cell that reports of UE is then determined N=A greater than the first thresholding; Perhaps
The measurement event that reports as UE is A3, and the signal quality of the current service cell that reports of UE greater than the second thresholding, is then determined N=B less than the first thresholding; Perhaps
The measurement event that reports as UE is A3, and the signal quality of the current service cell that reports of UE is then determined N=C less than the second thresholding;
The first thresholding＞second thresholding＞the 3rd thresholding wherein, described A＞B＞C 〉=1.
10. device as claimed in claim 9 is characterized in that:
The signal quality of described current service cell comprises: Reference Signal Received Power (RSRP) or Reference Signal Received Quality (RSRQ).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110176027.2A CN102857964B (en) | 2011-06-28 | 2011-06-28 | Terminal switching method and device |
| PCT/CN2011/082604 WO2013000235A1 (en) | 2011-06-28 | 2011-11-22 | Method and apparatus for handoff of terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110176027.2A CN102857964B (en) | 2011-06-28 | 2011-06-28 | Terminal switching method and device |
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| Publication Number | Publication Date |
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| CN102857964A true CN102857964A (en) | 2013-01-02 |
| CN102857964B CN102857964B (en) | 2017-02-15 |
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| CN201110176027.2A Expired - Fee Related CN102857964B (en) | 2011-06-28 | 2011-06-28 | Terminal switching method and device |
Country Status (2)
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| CN (1) | CN102857964B (en) |
| WO (1) | WO2013000235A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104053197A (en) * | 2013-03-15 | 2014-09-17 | 中国移动通信集团公司 | Aircraft switching method in ground-air long term evolution system, and base station and aircraft |
| WO2015096521A1 (en) * | 2013-12-27 | 2015-07-02 | 华为技术有限公司 | Control method and apparatus |
| CN104982067A (en) * | 2013-02-13 | 2015-10-14 | 高通股份有限公司 | Handover decisions based on absolute channel quality of serving cell |
| WO2020061899A1 (en) * | 2018-09-27 | 2020-04-02 | 华为技术有限公司 | Cell switching method and device |
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| WO2008133579A1 (en) * | 2007-04-27 | 2008-11-06 | Telefonaktiebolaget Lm Ericsson (Publ) | Handover using dedicated resources reserved for a limited time interval |
| CN101466127A (en) * | 2008-12-30 | 2009-06-24 | 上海无线通信研究中心 | District switching method capable of improving switching success rate |
| CN101877895A (en) * | 2009-04-30 | 2010-11-03 | 大唐移动通信设备有限公司 | Cell switching method and system |
| CN102084687A (en) * | 2008-07-04 | 2011-06-01 | 爱立信电话股份有限公司 | Adaptation of handover command size in a mobile telecommunication network |
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2011
- 2011-06-28 CN CN201110176027.2A patent/CN102857964B/en not_active Expired - Fee Related
- 2011-11-22 WO PCT/CN2011/082604 patent/WO2013000235A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2008133579A1 (en) * | 2007-04-27 | 2008-11-06 | Telefonaktiebolaget Lm Ericsson (Publ) | Handover using dedicated resources reserved for a limited time interval |
| CN102084687A (en) * | 2008-07-04 | 2011-06-01 | 爱立信电话股份有限公司 | Adaptation of handover command size in a mobile telecommunication network |
| CN101466127A (en) * | 2008-12-30 | 2009-06-24 | 上海无线通信研究中心 | District switching method capable of improving switching success rate |
| CN101877895A (en) * | 2009-04-30 | 2010-11-03 | 大唐移动通信设备有限公司 | Cell switching method and system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104982067A (en) * | 2013-02-13 | 2015-10-14 | 高通股份有限公司 | Handover decisions based on absolute channel quality of serving cell |
| CN104053197A (en) * | 2013-03-15 | 2014-09-17 | 中国移动通信集团公司 | Aircraft switching method in ground-air long term evolution system, and base station and aircraft |
| WO2015096521A1 (en) * | 2013-12-27 | 2015-07-02 | 华为技术有限公司 | Control method and apparatus |
| WO2020061899A1 (en) * | 2018-09-27 | 2020-04-02 | 华为技术有限公司 | Cell switching method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102857964B (en) | 2017-02-15 |
| WO2013000235A1 (en) | 2013-01-03 |
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