CN101860931B - Cell switching method and system for multi-carrier aggregation system - Google Patents
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Abstract
The invention provides a cell switching method and a system for a multi-carrier aggregation system. When an evolved Node B (eNB) determines a target cell to admit one of a plurality of working frequency points of user equipment, a switching command containing frequency point information admitted by the target cell is transmitted to the UE through a source eNB and carrier resources satisfying the required quality of service (QoS) of the UE are reserved for the UE; and after the UE accesses to the target cell according to the frequency point information in the switching command by using the frequency point admitted by the target cell, a target eNB schedules the data transmission of the UE on the carrier resources reserved for the UE. Thereby, the switching of the UE from a source cell to the target cell under the multi-carrier system is realized, and if the carrier resources which are reserved by the eNB for the UE and satisfy the required QoS are multi-carrier resources, the switching of the UE from multi-carrier to multi-carrier can be realized.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly a kind of cell switching method of multi-carrier aggregation system and system.
Background technology
When the situations such as deterioration occurs such as the current place of user terminal (UE) cell channel environment occured, source base station (eNB) can trigger UE and carry out the residential quarter switching.
Existing cell switch process as shown in Figure 1, source eNB sends handover request message to target eNB, comprises Target Cell Identifier that source eNB selects and the working frequency points information of UE in this handover request message.Target eNB is after determining that Target cell can use the working frequency points of this UE to admit the access of UE, for UE reserves corresponding resource, the resource of this reservation is the carrier resource at the working frequency points place of this UE, and to the response message that source eNB replys the permission switching, wherein be included as the carrier information that UE reserves.Source eNB is carried at the carrier information of Target Cell Identifier and above-mentioned reservation and sends to UE in the switching command, after UE receives switching command, by a carrier wave access Target cell of reserving in the Target cell.
Along with multi-carrier polymerizing (CA, Carrier Aggregation) proposition of technology, can be with a plurality of continuous or discrete carrier wave in the same residential quarter, the perhaps a plurality of continuous or discrete carrier wave of a plurality of single-carrier cell, concentrate in together simultaneously for the UE service, so that higher peak rate and throughput of system to be provided.Because in the CA system, UE carries out the CA transmission at source eNB, namely work at a plurality of carrier waves simultaneously, carrying out may also need to carrying out the CA transmission in target eNB after switch the residential quarter, that is to say that the switching in the CA system is that multicarrier is to the switching of multicarrier.Changing method of the prior art then be single carrier to the switching of single carrier, it can not be used for the CA system, and at present still without any the method for switching for the residential quarter of CA system.
Summary of the invention
In view of this, the invention provides cell switching method and the system of a kind of CA system, be applicable in the CA system contingent multicarrier to the switching of multicarrier.
A kind of cell switching method of multi-carrier aggregation system, the method comprises:
A, a plurality of working frequency points that satisfy switching condition are arranged in the working frequency points of UE, target eNB according to source eNB send carry UE one of them satisfy the handover request message of the working frequency points information of switching condition, when determining in many working frequency points of Target cell admittance UE, for UE reserves the carrier resource that the QoS of survice satisfy this UE requires, send the switching command of the frequency point information that comprises the Target cell admittance to UE by source eNB, wherein, the described carrier resource of reserving is multi-carrier resource or the single carrier resource in the multi-carrier district, the perhaps multi-carrier resource that aggregates into of a plurality of single-carrier cell, perhaps the single carrier resource of a single-carrier cell;
B, described UE are according to the frequency point information in the switching command, and the frequency that utilizes Target cell to admit accesses Target cell;
C, described target eNB are in the transfer of data that is the described UE of carrier resource scheduling of described UE reservation.
A kind of residential quarter switched system of multi-carrier aggregation system, this system comprises: target eNB, source eNB and UE;
Described target eNB, be used for when the working frequency points of UE a plurality of working frequency points that satisfy switching condition being arranged, according to described source eNB send carry UE one of them satisfy the handover request message of the working frequency points information of switching condition, determine when Target cell is admitted in many working frequency points of described UE one, the carrier resource that the QoS of survice that this UE is satisfied in described UE reservation requires, send the switching command that comprises the frequency point information that Target cell admits to described UE by described source eNB, wherein, described target eNB is that the carrier resource that described UE reserves is interior multi-carrier resource or single carrier resource of a multi-carrier district, the perhaps multi-carrier resource that aggregates into of a plurality of single-carrier cell, perhaps the single carrier resource of a single-carrier cell; Behind described UE access Target cell, in the transfer of data that is the described UE of carrier resource scheduling of described UE reservation;
Described UE is used for the frequency point information according to the switching command that receives, the frequency access Target cell that utilizes Target cell to admit.
As can be seen from the above technical solutions, in the method and system provided by the present invention, target eNB is when determining that Target cell is admitted in many working frequency points of UE one, for UE reserves the carrier resource that the QoS of survice satisfy this UE requires, send the switching command that comprises the frequency point information that Target cell admits to UE by source eNB; UE is according to the frequency point information in the switching command, and after the frequency that utilizes Target cell to admit accessed Target cell, target eNB was in the transfer of data of the carrier resource scheduling UE that reserves for UE.Thereby the switching of UE from the cell-of-origin to the Target cell under the realization multicarrier system, if target eNB is UE reserve to satisfy the carrier resource that QoS of survice requires be multi-carrier resource, then UE can realize the switching from the multicarrier to the multicarrier.
Description of drawings
Fig. 1 is that schematic diagram is switched in the residential quarter of single-carrier system in the prior art;
The method flow diagram that Fig. 2 provides for the embodiment of the invention;
The system construction drawing that Fig. 3 provides for the embodiment of the invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
Method provided by the invention mainly comprises: target eNB is determined when Target cell is admitted in many working frequency points of UE one, for UE reserves the carrier resource that the QoS (QoS) satisfy this UE requires, send the switching command that comprises the frequency point information that Target cell admits to UE by source eNB; This UE is according to the frequency point information in the switching command, and the frequency that utilizes Target cell to admit accesses Target cell; Target eNB is behind UE access Target cell, in the transfer of data of this UE of carrier resource scheduling that reserves for this UE.
Below in conjunction with specific embodiment said method is described in detail.The method flow diagram that Fig. 2 provides for the embodiment of the invention, as shown in Figure 2, the method can may further comprise the steps:
Step 201: source eNB sends handover request message to target eNB, comprises the working frequency points information that satisfies switching condition of Target Cell Identifier and UE in the handover request message.
Source eNB can judge whether to satisfy switching condition according to the measurement message that UE reports, for example, can judge that whether difference between the signal quality of the signal quality of Target cell and cell-of-origin is greater than default switching threshold, when satisfying switching condition, source eNB can send handover request message to the target eNB under the Target cell that satisfies switching condition, and this partial content is prior art.
In the present invention, may have one or more working frequency points that satisfy switching condition in the working frequency points of UE, the working frequency points information that one of them of UE can be satisfied switching condition in the handover request message that source eNB sends to target eNB sends to target eNB.
Step 202: target eNB is according to the handover request message that receives, the frequency point information that comprises in the handover request message is carried out acceptance judging, namely judge the access whether handoff request message contains in the Target cell frequency can admit UE, if, continue execution in step 203, otherwise send the failed notice of judgement to source eNB, go to step 201, source eNB comprises the information of a working frequency points in other working frequency points of UE in handover request message.
The acceptance judging that relates in this step can for: judge whether carrier load corresponding to this working frequency points in the Target cell can satisfy the access requirement of UE, if so, then can admit the access of UE, otherwise the access that can not admit UE.Also can adopt other acceptance judging mode of the prior art.
The mode of in above-mentioned steps 201 and step 203, describing, if it is single-carrier cell that source eNB determines to satisfy the Target cell of switching condition, then can send the handover request message that comprises Target Cell Identifier to target eNB, needn't comprise the working frequency points information that satisfies switching condition of UE in this handover request message.Because Target cell is single-carrier cell, therefore, after target eNB receives handover request message, judge the access that the frequency of this Target cell can be admitted UE, if so, determine that Target cell admits in many working frequency points of UE, continue execution in step 203; Otherwise, the access that preload can not have been admitted UE of working as of Target cell is described, therefore, do not allow handoff response to source eNB transmission, finish this switching flow.
Step 203: target eNB satisfies the carrier resource of its QoS of survice requirement according to the QoS of survice requirement of this UE for the UE reservation in Target cell, and return the permission switching response message to source eNB.
In this step, target eNB can be from such as the QoS of survice requirement of obtaining UE the upper layer network equipment such as Mobility Management Entity (MME), for example, bandwidth information, rate information or delay requirement etc. that the employed business of UE is required are reserved the carrier resource that satisfies its QoS of survice requirement for UE.
Wherein, the carrier resource of reservation can be multi-carrier resource, also can be the single carrier resource.Wherein, multi-carrier resource can be the multi-carrier resource that the interior multi-carrier resource of a multi-carrier district or a plurality of single-carrier cell aggregate into; The single carrier resource can be the interior single carrier resource of a multi-carrier district or the single carrier resource of single-carrier cell.
The specifically multi-carrier resource of reserving or single carrier resource except with the QoS of survice of UE require relevant, and relevant with the carrier bandwidths of target eNB small area.For example, if UE adopts 2 carrier aggregation in the cell-of-origin, the bandwidth of each carrier wave is 10M, and the bandwidth of each carrier wave of target eNB small area then adopts single carrier transmission to get final product when being 20M, namely reserves 1 carrier resource; When the bandwidth of each carrier wave of target eNB small area still is 10M, then still need to adopt 2 carrier aggregation in target eNB, namely reserve 2 carrier resources.
More preferably, source eNB can also comprise the CA information of UE in the cell-of-origin in the handover request message that step 201 sends, use when reserving carrier resource for target eNB.Wherein, CA information can be the carrier frequency used in the cell-of-origin of UE, bandwidth etc., and target eNB can under the prerequisite that the QoS of survice that satisfies UE requires, be selected the carrier resource that approaches with the CA information of UE in the cell-of-origin.Like this can be so that the change operating frequency that UE tries one's best little in switching be afterwards also saved energy for UE thereby improve switching efficiency.
Also has a kind of mode, because UE can be to source eNB report measurement information, the signal quality situation that comprises each carrier wave in the target eNB in this metrical information, therefore, the metrical information that source eNB can report according to UE, determine to satisfy in the target eNB carrier wave of demand on signal quality, the carrier information that satisfies demand on signal quality is carried in the handover request message.Target eNB can satisfy in the carrier information of demand on signal quality for UE reserves the carrier resource that the QoS of survice that satisfies this UE requires at these, thereby improves service quality.Wherein, the carrier information that satisfies demand on signal quality can be the carrier identification that satisfies demand on signal quality; Or satisfy the carrier identification of demand on signal quality and the signal quality information of these carrier waves, so that target eNB can preferentially be selected the high carrier wave of signal quality according to the signal quality of these carrier waves.
If target eNB can be reserved the carrier resource that the QoS of survice satisfy this multi-carrier terminal requires for multi-carrier terminal, then return the permission switching response message to source eNB, otherwise, can return to source eNB and not allow switching response message.
Step 204: source eNB sends switching command to UE, comprises the frequency point information that Target cell is admitted in this switching command.
Comprise switching command in the switching response message that target eNB is returned to source eNB, carry the frequency point information that Target cell is admitted in this switching command, source eNB is transmitted to UE with this switching command.
Step 205:UE is according to the frequency point information in the switching command, thus with frequency that Target cell the is admitted access Target cell that connects.
UE can only be that signaling connects with being connected of frequency foundation that Target cell is admitted, and also can be that the signaling connection is connected with data.
Target eNB is when doing acceptance judging for this frequency, can determine also whether this frequency only is used for signaling and connects, perhaps being used for simultaneously the signaling connection is connected with data, and in allowing switching response message, indicate, source eNB is according to the indication that allows in the switching response message, also indicate this frequency to be used for signaling in switching command and connect, perhaps be used for the signaling connection and be connected with data, UE carries out according to the indication in the switching command.
Behind the step 206:UE access Target cell, target eNB is carried out transfer of data at the carrier resource scheduling UE that reserves.
This process can be controlled by Radio Resource (RRC) and connect the reprovision process implementation, for example, can connect at RRC and notify UE to carry out transfer of data at the carrier resource of reserving in the reallocation message.
If the carrier resource of reserving is multi-carrier resource, then UE proceeds the CA transmission at the multi-carrier resource of reserving, thereby realizes the switching from the multicarrier to the multicarrier.
That is to say that in the handoff procedure of this embodiment, UE can at first set up signaling with a carrier wave of Target cell and be connected, and sets up data by the scheduling of target eNB with a plurality of carrier waves again and is connected; Also can at first set up simultaneously data with a carrier wave of Target cell and be connected with signaling, set up data by the scheduling of target eNB with a plurality of carrier waves again and be connected.
Need to prove, in switching command, can also comprise target eNB and be the carrier resource information that UE reserves, UE behind the access Target cell, can be directly according to switching command at the carrier resource transmitting data for the UE reservation.Perhaps, target eNB will send to UE for the carrier resource information that UE reserves again in the process of scheduling UE.
More than be the detailed description that method provided by the present invention is carried out, the below is described in detail system provided by the present invention.The system construction drawing that Fig. 3 provides for the embodiment of the invention, as shown in Figure 3, this system can comprise: target eNB 301, source eNB302 and UE303.
Target eNB 301 is used for determining when of many working frequency points of Target cell admittance UE303, for UE303 reserves the carrier resource that the QoS of survice satisfy this UE303 requires, send the switching command that comprises the frequency point information that Target cell admits to UE303 by source eNB302; Behind UE303 access Target cell, in the transfer of data of the carrier resource scheduling UE303 that reserves for UE303.
UE303 is used for the frequency point information according to the switching command that receives, the frequency access Target cell that utilizes Target cell to admit.
Further, source eNB after determining to satisfy switching condition and the reciprocal process between the target eNB can adopt following dual mode:
First kind of way: source eNB302 is used for sending a handover request message that satisfies the working frequency points information of switching condition that comprises Target Cell Identifier and UE303 to target eNB 301; After receiving the failed notice of judgement, comprise the handover request message that Target Cell Identifier and UE303 satisfy an one working frequency points information of switching condition to target eNB 301 transmissions;
Target eNB 301, after also being used for receiving handover request message, judge the access whether working frequency points that comprises in the handover request message in the Target cell can admit UE303, if so, then carry out by source eNB302 and send the switching command comprise the frequency point information that Target cell admits to UE303; Otherwise, send the failed notice of judgement to source eNB302.
The second way: source eNB302 can also be used for sending the handover request message that comprises Target Cell Identifier to target eNB 301 when Target cell is single-carrier cell; After receiving the response that does not allow to switch, finish current switching flow.
After target eNB 301 receives this handover request message, judge the access whether Target cell can admit UE303, if so, determine in many working frequency points of Target cell admittance UE303; Otherwise send to source eNB302 and not allow the response of switching.
In said process, target eNB 301 is sending to UE303 in the switching command process by source eNB302, can return the switching command that comprises the frequency point information that Target cell admits to source eNB302, and source eNB302 transmits this switching command to UE303.
Source eNB302 can also be used for carrying the multi-carrier polymerizing information of UE303 in the cell-of-origin in handover request message.
Target eNB 301 is implemented as the carrier resource that UE303 reserves the quality QoS requirement of satisfying this UE303 according to the multi-carrier polymerizing information of UE303 in the cell-of-origin.
Perhaps, source eNB302 can also be used for the metrical information that reports according to UE303, determine to satisfy in the target eNB 301 carrier wave of demand on signal quality, and the carrier information that will satisfy demand on signal quality is carried in the handover request message.
Target eNB 301 is reserved the carrier resource that the QoS of survice satisfy this UE303 requires for UE303 in satisfying the carrier wave of demand on signal quality.
Particularly, UE303 sets up signaling with the frequency that Target cell is admitted and is connected, and perhaps set up simultaneously the signaling connection and be connected with data, thus the access Target cell.
Require and the carrier bandwidths situation of Target cell according to the concrete QoS of survice of UE303, target eNB 301 can be the multi-carrier resource in the multi-carrier district or single carrier resource for the carrier resource of UE303 reservation; The perhaps multi-carrier resource that aggregates into of a plurality of single-carrier cell, perhaps the single carrier resource of a single-carrier cell.
Can be found out by above description, in the method and system provided by the present invention, target eNB is when determining that Target cell is admitted in many working frequency points of UE one, for UE reserves the carrier resource that the QoS of survice satisfy this UE requires, send the switching command that comprises the frequency point information that Target cell admits to UE by source eNB; UE is according to the frequency point information in the switching command, and after the frequency that utilizes Target cell to admit accessed Target cell, target eNB was in the transfer of data of the carrier resource scheduling UE that reserves for UE.Thereby the switching of UE from the cell-of-origin to the Target cell under the realization multicarrier system, if target eNB is UE reserve to satisfy the carrier resource that QoS of survice requires be multi-carrier resource, then UE can realize the switching from the multicarrier to the multicarrier.
In addition, method and system provided by the invention has been reused interface in Long Term Evolution (LTE) system and the handoff procedure of core net to greatest extent, has also strengthened user's experience when having satisfied QoS of survice.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (13)
1. the cell switching method of a multi-carrier aggregation system is characterized in that, the method comprises:
A, a plurality of working frequency points that satisfy switching condition are arranged in the working frequency points of UE, target BS eNB according to source base station eNB send carry UE one of them satisfy the handover request message of the working frequency points information of switching condition, when determining in many working frequency points of Target cell admittance UE, reserve the carrier resource of the quality QoS requirement of satisfying this UE for UE, send the switching command comprise the frequency point information that Target cell admits to UE by source eNB, wherein, the described carrier resource of reserving is multi-carrier resource or the single carrier resource in the multi-carrier district, the perhaps multi-carrier resource that aggregates into of a plurality of single-carrier cell, perhaps the single carrier resource of a single-carrier cell;
B, described UE are according to the frequency point information in the switching command, and the frequency that utilizes Target cell to admit accesses Target cell;
C, described target eNB are in the transfer of data that is the described UE of carrier resource scheduling of described UE reservation.
2. method according to claim 1 is characterized in that, also comprises before steps A:
D1, source eNB send a handover request message that satisfies the working frequency points information of switching condition that comprises Target Cell Identifier and described UE to target eNB;
After D2, target eNB receive described handover request message, judge the access whether working frequency points that comprises in the message of handover request described in the Target cell can admit described UE, if so, carry out described steps A; Otherwise, send the failed notice of judgement, execution in step D3 to source eNB;
After D3, source eNB receive the failed notice of judgement, comprise the handover request message that Target Cell Identifier and described UE satisfy other working frequency points information of switching condition to the target eNB transmission, go to step D2.
3. method according to claim 1 is characterized in that, when described Target cell is single-carrier cell, also comprises before described steps A: source eNB sends the handover request message that comprises Target Cell Identifier to target eNB; After target eNB receives described handover request message, judge the access whether Target cell can admit described UE, if so, determine in many working frequency points of Target cell admittance UE, carry out described steps A; Otherwise, do not allow handoff response, process ends to source eNB transmission.
4. according to claim 1,2 or 3 described methods, it is characterized in that, describedly send the switching command comprise the frequency point information that Target cell admits by source eNB to UE and be specially: described target eNB sends the permission switching response message that comprises switching command to source eNB, source eNB is transmitted to described UE with this switching command, wherein, carry the frequency point information that Target cell is admitted in the described switching command.
5. according to claim 1,2 or 3 described methods, it is characterized in that also comprise described target eNB in the described switching command and be the carrier resource information that UE reserves, described UE is after step B, at described carrier resource transmitting data for the UE reservation; Perhaps,
In described step C, described target eNB will send to described UE for the carrier resource information that UE reserves in the process of the described UE of scheduling.
6. according to claim 2 or 3 described methods, it is characterized in that, also comprise the multi-carrier polymerizing information of described UE in the cell-of-origin in the described handover request message, described target eNB is according to the multi-carrier polymerizing information of described UE in the cell-of-origin, carries out describedly to reserve the carrier resource that the QoS of survice that satisfies this UE requires for UE; Perhaps,
The metrical information that described source eNB reports according to UE, determine to satisfy in the target eNB carrier wave of demand on signal quality, and the carrier information that will satisfy demand on signal quality is carried in the described handover request message, and described target eNB is reserved the carrier resource that the QoS of survice that satisfies this UE requires for UE in the described carrier wave that satisfies demand on signal quality.
7. method according to claim 1, it is characterized in that, the frequency access Target cell that utilizes Target cell to admit described in the step B comprises: described UE sets up signaling with the frequency that described Target cell is admitted and is connected, perhaps set up simultaneously the signaling connection and be connected with data, thus the access Target cell.
8. the residential quarter switched system of a multi-carrier aggregation system is characterized in that, this system comprises: target eNB, source eNB and UE;
Described target eNB, be used for when the working frequency points of UE a plurality of working frequency points that satisfy switching condition being arranged, according to described source eNB send carry UE one of them satisfy the handover request message of the working frequency points information of switching condition, determine when Target cell is admitted in many working frequency points of described UE one, the carrier resource that the QoS of survice that satisfies this UE for described UE reservation requires, send the switching command that comprises the frequency point information that Target cell admits to described UE by described source eNB, wherein, described target eNB is that the carrier resource that described UE reserves is interior multi-carrier resource or single carrier resource of a multi-carrier district, the perhaps multi-carrier resource that aggregates into of a plurality of single-carrier cell, perhaps the single carrier resource of a single-carrier cell; Behind described UE access Target cell, in the transfer of data that is the described UE of carrier resource scheduling of described UE reservation;
Described UE is used for the frequency point information according to the switching command that receives, the frequency access Target cell that utilizes Target cell to admit.
9. system according to claim 8 is characterized in that, described source eNB is used for sending a handover request message that satisfies the working frequency points information of switching condition that comprises Target Cell Identifier and described UE to described target eNB; After receiving the failed notice of judgement, comprise the handover request message that Target Cell Identifier and described UE satisfy other working frequency points information of switching condition to described target eNB transmission;
Described target eNB, after also being used for receiving described handover request message, judge the access whether working frequency points that comprises in the message of handover request described in the Target cell can admit described UE, if so, then carry out by described source eNB and send the switching command that comprises the frequency point information that Target cell admits to described UE; Otherwise, send the failed notice of judgement to described source eNB.
10. system according to claim 8 is characterized in that, described source eNB also is used for sending the handover request message that comprises Target Cell Identifier to target eNB when Target cell is single-carrier cell; After receiving the response that does not allow to switch, finish current switching flow;
After described target eNB receives described handover request message, judge the access whether Target cell can admit described UE, if so, determine in many working frequency points of Target cell admittance UE; Otherwise, send to source eNB and not allow the response of switching.
11. according to claim 9 or 10 described systems, it is characterized in that described source eNB also is used for carrying the multi-carrier polymerizing information of described UE in the cell-of-origin in described handover request message;
Described target eNB is according to the multi-carrier polymerizing information of described UE in the cell-of-origin, carries out describedly to reserve the carrier resource that the QoS of survice that satisfies this UE requires for UE.
12. according to claim 9 or 10 described systems, it is characterized in that, described source eNB also is used for the metrical information that reports according to UE, determines to satisfy in the target eNB carrier wave of demand on signal quality, and the carrier information that will satisfy demand on signal quality is carried in the described handover request message;
Described target eNB is reserved the carrier resource that the QoS of survice that satisfies this UE requires for UE in the described carrier wave that satisfies demand on signal quality.
13. system according to claim 8 is characterized in that, described UE sets up signaling with the frequency that described Target cell is admitted and is connected, perhaps set up simultaneously the signaling connection and be connected with data, thus the access Target cell.
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| CN103249021B (en) * | 2012-02-01 | 2016-12-14 | 华为技术有限公司 | Base station equipment realizes the method and apparatus of multi-cell service |
| CN103906147A (en) * | 2012-12-25 | 2014-07-02 | 电信科学技术研究院 | Method and device for determining target cell |
| WO2014101232A1 (en) * | 2012-12-31 | 2014-07-03 | 华为技术有限公司 | Paging method and device for wireless communication system |
| CN113411851A (en) * | 2013-06-18 | 2021-09-17 | 索尼公司 | Communication device |
| US10165479B2 (en) * | 2014-02-18 | 2018-12-25 | Samsung Electronics Co., Ltd. | Method and apparatus for performing handover of carrier aggregation mobile station |
| WO2017049630A1 (en) | 2015-09-25 | 2017-03-30 | 华为技术有限公司 | Cell handover method, apparatus and device |
| CN105357760B (en) * | 2015-09-29 | 2018-12-21 | 努比亚技术有限公司 | A kind of data transmission method and device |
| WO2017201700A1 (en) * | 2016-05-26 | 2017-11-30 | 华为技术有限公司 | Cell handover method and base station |
| CN106851739B (en) * | 2017-03-13 | 2020-07-07 | 深圳市万普拉斯科技有限公司 | Method and device for regulating and controlling CA (certificate authority) capability level of mobile terminal and mobile terminal |
| CN112400340B (en) * | 2018-07-09 | 2022-02-25 | 华为技术有限公司 | Cell switching method and related equipment |
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| CN101203034A (en) * | 2006-12-12 | 2008-06-18 | 华为技术有限公司 | Method, system and equipment for switching grouping switch in downward dual carrying / multi carrying transmission technique |
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| CN101094505A (en) * | 2006-06-23 | 2007-12-26 | 华为技术有限公司 | Fast method for selecting subzone / sector |
| CN101203034A (en) * | 2006-12-12 | 2008-06-18 | 华为技术有限公司 | Method, system and equipment for switching grouping switch in downward dual carrying / multi carrying transmission technique |
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