CN102917421B - Method and system for realizing rapid switching in communication network - Google Patents
Method and system for realizing rapid switching in communication network Download PDFInfo
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- CN102917421B CN102917421B CN201110223192.9A CN201110223192A CN102917421B CN 102917421 B CN102917421 B CN 102917421B CN 201110223192 A CN201110223192 A CN 201110223192A CN 102917421 B CN102917421 B CN 102917421B
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Abstract
The invention provides a method for realizing rapid switching; and the method comprises the steps as follows: (a) a mobile terminal is used for periodically measuring signal intensities of a service base station and a neighbor base station; when the signal intensity of one neighbor base station satisfies a switching condition, the terminal is used for setting the base station as a target base station to be switched; (b) the mobile terminal is used for applying to the target base station for special resources for switching through the service base station and is used for obtaining GPS (Global Positioning System) information of the target base station and public channel resources; (c) the mobile terminal is used for calculating uplink timing advance between the mobile terminal and the target base station according to the GPS information of the target base station; and (d) the mobile terminal is used for directly accessing the target base station into special resources for switching according to the uplink timing advance so as to finish switching operation. The invention further discloses a system for realizing rapid switching. According to the invention, on the basis that the switching reliability is guaranteed, the time spent in the switching process can be effectively reduced so as to satisfy switching delaying requirements in a communication system.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to the method and system realizing in a kind of communication network switching fast.
Background technology
In wireless communication procedure, mobile terminal, in moving process, for obtaining good communication quality, can switch between different base stations.
In the existing communication technology (as LTE or UMTS), the process that mobile terminal switches between the base stations as shown in Figure 1, mainly comprises the following steps:
Step 11, terminal periodic is carried out measurement and is reported;
Step 12, serving BS according to the metrical information of terminal to report, the target BS that optional m igration terminal will switch;
Step 13, serving BS sends handover request message to target BS, and transmitting terminal contextual information is for applying for that distributing mobile terminal switches private resource simultaneously;
Step 14, target BS, according to terminal context information, is terminal distribution switching private resource;
Step 15, target BS sends handover request response message to serving BS, the switching private resource that notice is distributed;
Step 16, after serving BS receives the handover request response message of target BS, send switch indicating information to mobile terminal, notification terminal switches;
Step 17, after mobile terminal receives the switch indicating information of serving BS, utilize the switching private resource obtained to perform ranging process under target BS, obtain the uplink timing advance (Uplink Timing Advanced) of terminal and target BS;
Step 18, mobile terminal, according to the uplink timing advance with target BS, utilizes special switchable resource to access target BS, completes switching.
Realizing in process of the present invention, inventor finds that in prior art, at least there are the following problems:
In a step 11, serving BS selects the target BS switched according to the metrical information of terminal to report, and terminal measurement report process may affect its reliability because of the link-quality decline between terminal and serving BS, and then affect the accuracy of serving BS select target base station, cause the failure of handoff procedure, or, terminal measurement report process may decline because of the link-quality between serving BS and occur postponing, and then the processing time making serving BS select target base station need cost longer.
And in step 17, mobile terminal is before access target BS, needing first to carry out ranging process obtains the uplink timing advance with target BS, realizes and target BS uplink synchronous according to the uplink timing advance with target BS.Realize ranging process, mobile terminal needs first to send distance measurement request to target BS, and after execution range operation, target BS needs to send range measurement to mobile terminal, terminal calculates the uplink timing advance with target BS according to range measurement again, ranging process needs to spend the more time, and then increase the handover delay of mobile terminal, and, in ranging process, mobile terminal and target BS can carry out interacting message, if eat dishes without rice or wine, link-quality declines and will cause information drop-out, make range finding because of time-out failure, and then cause handoff failure, add handoff procedure unreliability.
In sum, the handoff process that prior art provides, the time making handoff procedure may need to spend is longer, cannot meet the requirement of communication system to switching delay.
Summary of the invention
The object of the present invention is to provide the method and system realizing in a kind of communication network switching fast, ensureing to switch on the basis of reliability, effectively reduce the time of handoff procedure cost, meeting the requirement to switching delay in communication system.
The method that the realization that the present invention proposes switches fast comprises the following steps:
A. mobile terminal period measures the signal strength signal intensity of serving BS and adjacent base station, and when the signal strength signal intensity of a certain adjacent base station meets switching condition, this base station is set to the target BS that will switch by terminal;
B. mobile terminal switches private resource by serving BS to target BS application, and obtains the GPS information of target BS, and common channel resources;
C. mobile terminal calculates uplink timing advance between itself and target BS according to the GPS information of target BS;
D. mobile terminal is according to described uplink timing advance, switching private resource directly accesses target BS, completes handover operation.
Preferably, the synchronizing signal of mobile terminal also periodic measurement serving BS and adjacent base station, calculates the link budget information determining to switch, completes the down-going synchronous with target BS according to described link budget information according to the measurement result of described synchronizing signal.Mobile terminal by the common channel resources of target BS, can also obtain the link budget information switched, completes the down-going synchronous with target BS according to described link budget information.Further, described link budget information can be and the one or more combination in the descending timing offset of target BS, frequency departure and path loss.
The invention allows for a kind of communication system realizing switching fast, comprising: the mobile terminal of one or more support said method; And the base station of one or more support said method.
Mobile terminal in described communication system can comprise: period measurement unit, for measuring signal strength signal intensity, the synchronizing signal of serving BS and adjacent base station in predetermined period, for switch decision is prepared; Switch decision unit, for the signal strength signal intensity measured according to period measurement unit, whether judgement is initiated to switch; Handover trigger unit, for the court verdict according to switch decision unit, triggers and switches; Handover operation unit, after switching, completes switching associative operation for handover trigger unit triggers.
Preferably, described switch decision unit, specifically comprises: target BS selects module, for the signal strength signal intensity of the serving BS that obtains according to measurements of period measurement unit and adjacent base station, by predetermined alternative condition, selects the target BS of switching; Link budget module, for after target BS selects model choice target BS, the serving BS obtained according to the measurement of period measurement unit and the synchronizing signal of adjacent base station, calculate and determine and the descending timing offset of target BS, frequency departure and path loss.
Preferably, described handover trigger unit, specifically comprises: switch private resource application module, and for when handover trigger, notification service base station switches private resource on behalf of to target BS application; GPS information acquisition module, for when handover trigger, notification service base station is on behalf of the GPS information obtaining target BS.
Preferably, described handover operation unit, specifically comprises: switch private resource receiver module, for after handover trigger unit triggers switches, obtains the switching private resource that this mobile terminal is obtained to target BS application by serving BS; GPS information receiver module, for after handover trigger unit triggers switches, receives this mobile terminal obtains the target BS obtained to target BS GPS information by serving BS; Uplink timing advance computing unit, for the GPS information of target BS received according to GPS information receiver module, calculates the uplink timing advance with target BS; Switch access unit, for this mobile terminal of calculating according to uplink timing advance computing unit and target BS uplink timing advance, complete to target BS access procedure switching on private resource.
Base station in described communication system can comprise: GPS module, for obtaining the GPS information of this base station, and notifies GPS information administrative unit; GPS information administrative unit, for managing this base station GPS information obtained from GPS module; Switchable resource administrative unit, for being the Radio Resource of this BTS management for switching.
Preferably, described GPS information administrative unit, specifically comprises: base station GPS information acquisition module, for when as serving BS, for the GPS information of acquisition for mobile terminal target BS; Base station GPS information receiver module, for when as serving BS, for the GPS information of mobile terminal receiving target base station; GPS information storage update module, for storing the GPS information that GPS module obtains, and upgrades in time when GPS information changes; GPS information notification module, for when as target BS, by this base station latest GPS message notice of described GPS information storage update module record to serving BS.
Preferably, described switchable resource administrative unit, specifically comprises: base station switches private resource application module, for when as serving BS, switches private resource for mobile terminal application; Base station switches private resource receiver module, for when as serving BS, for the switching private resource of mobile terminal receiving target base station assigns; Switch private resource distribution module, for when as target BS, switch private resource for mobile terminal distributes; Switch private resource notification module, for when as target BS, the switching dedicated resource information of described switching private resource module assigns is informed to serving BS.
The beneficial effect of technical scheme provided by the invention is: 1, carry out the selection of target BS without the need to serving BS or network side mobile management nodes according to terminal measurement report information, but switched by terminal select target base station, thus without the need to terminal measurement report process, effective minimizing switches set-up procedure institute spended time, efficiently avoid simultaneously and report in process in measurement, cause the loss of measurement reporting information when link-quality of eating dishes without rice or wine declines.2, mobile terminal is according to the uplink timing advance between the GPS information calculating of target BS with target BS, according to the uplink timing advance between target BS, realize and target BS uplink synchronous, direct access target BS, under target BS, ranging process is carried out to obtain uplink timing advance without the need to terminal, thus reduction switches spended time, the handoff failure unsuccessfully caused of finding range can be avoided simultaneously.
Accompanying drawing explanation
Fig. 1 is the handoff procedure schematic diagram of prior art;
Fig. 2 is the switching implementation procedure schematic diagram of the embodiment of the present invention one;
Fig. 3 is the switching implementation procedure schematic diagram of the embodiment of the present invention two;
Fig. 4 is the structural representation of the terminal installation of the embodiment of the present invention three;
Fig. 5 is the structural representation of the base station apparatus of the embodiment of the present invention four.
Embodiment
Basic thought of the present invention is: 1, by mobile terminal according to periodic measurement parameter information select target base station, without the need to serving BS according to terminal measurement report Information Selection target BS, effectively can reduce the operating time of target BS selection course, and increase the reliability of target BS selection result, improve handover success rate, 2, while mobile terminal switches private resource by serving BS to target BS application, also go by serving BS the GPS information obtaining target BS, and common channel information is (as broadcast channel, Random Access Channel, paging channel etc.), so that mobile terminal calculates the uplink timing advance with target BS according to the GPS information of target BS, just can directly access target BS without the need to range finding and complete uplink synchronous, avoid mobile terminal in handoff procedure because of the unsuccessfully handoff failure caused of finding range at target BS, and avoid perform ranging process bring consuming time, while improving handoff procedure reliability further, also switching delay is reduced further.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Embodiment one
As shown in Figure 2, in this embodiment, handoff process specifically comprises the following steps:
Step 21, mobile terminal, according to period measurement parameter information, selects the target BS that will switch;
The signal strength signal intensity of the serving BS that mobile terminal can obtain according to period measurement and adjacent base station, make and switch decision, when a certain neighbor base station signal intensity meets switching condition, this base station is set to the target BS of switching by terminal;
In order to reduce spended time in handoff procedure as far as possible, the synchronizing signal intensity of the serving BS that mobile terminal can also obtain according to period measurement and adjacent base station, calculates and determines and the link budget information such as the descending timing offset of target BS, frequency departure and path loss.Mobile terminal is according to the down-going synchronous of link budget information realization and target BS;
Step 22, mobile terminal sends handoff trigger message to serving BS, and instruction serving BS switches private resource for it to target BS application, and obtains GPS information and the common channel information of target BS;
The common channel information that mobile terminal is obtained to target BS by serving BS, can comprise the relevant informations such as current goal base station broadcast channel, Random Access Channel, paging channel;
Step 23, serving BS receives the handoff trigger message that mobile terminal sends, and sends handover request message to target BS, switches private resource and obtain GPS information and the common channel information of target BS for this terminal to target BS application;
Step 24, target BS receives the handover request message of serving BS, for this terminal distribution switches private resource;
Target BS is the switching private resource that mobile terminal distributes, can for special access channel information during mobile terminal access target BS, terminal can be made not need by public access channel access target BS, and on special access channel, access target BS, avoid colliding with other mobile terminals, improve access success rate, and then improve handover success rate;
Step 25, target BS sends handover request response message to serving BS, wherein comprises the switching dedicated resource information that target BS distributes to this mobile terminal, and the GPS information of target BS and common channel information;
Step 26, serving BS is passed through mobile terminal after receiving the handover request response message of target BS;
Step 27, after mobile terminal receives handover request response message, the uplink timing advance of itself and target BS is calculated according to the GPS information of target BS, according to the uplink timing advance with target terminal, mobile terminal can realize, with the uplink synchronous of target BS, directly accessing target BS without the need to range finding;
Mobile terminal, according to the target BS common channel information of carrying in handover request response message, upgrades the target BS common channel information that it is safeguarded;
Step 28, after mobile terminal receives handover request response message, according to the uplink timing advance of itself and target BS, and link budget information, target BS is utilized to be the switching dedicated resource information (as special access channel information) that it distributes, without the need to range finding, directly on special access channel, access target BS, complete switching;
Mobile terminal performs the time of handover operation, can perform handover operation immediately, also can determine voluntarily after receiving handover request response message after receiving handover request response message.
Embodiment two
In the present embodiment, mobile terminal is obtained and the one or more combination in the link budget information such as the descending timing offset of target BS, frequency departure and path loss by common signal channel when accessing target BS, according to the down-going synchronous of link budget information realization and target BS.
As shown in Figure 3, in this embodiment, handoff process specifically comprises the following steps:
Step 31, mobile terminal, according to period measurement parameter information, selects the target BS that will switch;
The signal strength signal intensity of the serving BS that mobile terminal can obtain according to period measurement and adjacent base station, make and switch decision, when a certain neighbor base station signal intensity meets switching condition, this base station is set to the target BS of switching by terminal;
Step 32, mobile terminal sends handoff trigger message to serving BS, and instruction serving BS switches private resource for it to target BS application, and obtains GPS information and the common channel information of target BS;
The common channel information that mobile terminal is obtained to target BS by serving BS, the relevant informations such as current goal base station broadcast channel, Random Access Channel, paging channel can be comprised, when mobile terminal access target BS, common channel information can be utilized to carry out the processes such as reception broadcast;
Step 33, serving BS receives the handoff trigger message that mobile terminal sends, and sends handover request message to target BS, switches private resource, and obtain target BS GPS information and common channel information for this terminal to target BS application;
Step 34, target BS receives the handover request message of serving BS, for this terminal distribution switches private resource;
Target BS is the switching private resource that mobile terminal distributes, can for special access channel information during mobile terminal access target BS, terminal can be made not need by public access channel access target BS, and on special access channel, access target BS, avoid colliding with other mobile terminals, improve access success rate, and then improve handover success rate;
Step 35, target BS sends handover request response message to serving BS, wherein comprises the switching dedicated resource information that target BS distributes to this mobile terminal, and the GPS information of target BS and common channel information;
Step 36, serving BS is passed through mobile terminal after receiving the handover request response message of target BS;
Step 37, mobile terminal is according to the target BS common channel information of carrying in handover request response message, upgrade the target BS common channel information that it is safeguarded, and utilize target BS common channel information, obtain and the link budget information such as the descending timing offset of target BS, frequency departure and path loss, the down-going synchronous with target BS can be realized according to link budget information;
Step 38, mobile terminal is according to the target BS GPS information of carrying in handover request response message, calculate the uplink timing advance of itself and target terminal, according to the uplink timing advance with target terminal, mobile terminal can realize, with the uplink synchronous of target BS, directly accessing target BS without the need to range finding;
Step 39, after mobile terminal receives handover request response message, according to uplink timing advance and the link budget information of itself and target BS, target BS is utilized to be the switching dedicated resource information (as special access channel information) that it distributes, without the need to range finding, special access channel directly accesses target BS, completes switching;
Mobile terminal performs the time of handover operation, can perform handover operation immediately, also can determine voluntarily after receiving handover request response message after receiving handover request response message.
Embodiment three
Present embodiments provide a kind of terminal supporting the inventive method, its specific implementation result as shown in Figure 4, mainly can comprise following processing unit:
(1) period measurement unit, for measuring the signal strength signal intensity of serving BS and adjacent base station in predetermined period, the parameter informations such as synchronizing signal, for switching judging is prepared;
(2) switch decision unit, for the parameter information measured according to period measurement unit, whether judgement is initiated to switch;
Described terminal switch judging unit specifically comprises:
Target BS selects module, for the serving BS that obtains according to periodic measurement and neighbor base station signal intensity, by predetermined alternative condition, selects the target BS switched;
Link budget module, for after target BS selects model choice target BS, according to the target BS synchronizing signal that periodic measurement obtains, calculates and determines the descending timing offset with target BS, frequency departure and path loss;
(3) handover trigger unit, if this initiation of switch decision unit judgement terminal switches, for triggering switching;
Described terminal switch trigger element specifically comprises:
Switch private resource application module, for when triggering switching, notification service base station switches special Radio Resource on behalf of to target BS application;
GPS information acquisition module, for when handover trigger, notification service base station is on behalf of the GPS information obtaining target BS;
(4) handover operation unit, after switching, completes switching associative operation for handover trigger unit triggers;
Described terminal switch operating unit specifically comprises:
Switch private resource receiver module, for after handover trigger unit triggers switches, obtain the switching private resource that this mobile terminal is obtained to target BS application by serving BS;
GPS information receiver module, for after handover trigger unit triggers switches, is received this mobile terminal and is obtained the target BS GPS information obtained by serving BS to target BS;
Uplink timing advance computing module, for the target BS GPS information received according to GPS information receiver module, calculates the uplink timing advance with target BS;
Switch access module, for this mobile terminal of calculating according to timing computing module and target BS uplink timing advance, complete to target BS access procedure.
Embodiment four
Present embodiments provide a kind of base station supporting the inventive method, as serving BS, also can be used as target BS, its specific implementation result as shown in Figure 5, mainly can comprise following processing unit:
(1) GPS module, for obtaining the GPS information of this base station, and notifies GPS information administrative unit;
(2) GPS information administrative unit, for managing this base station GPS information that GPS module obtains;
Described base station GPS information administrative unit specifically comprises:
Base station GPS information acquisition module, for when as serving BS, for the GPS information of acquisition for mobile terminal target BS;
Base station GPS information receiver module, for when as serving BS, for the GPS information of mobile terminal receiving target base station;
GPS information storage update module, for storing the GPS information that GPS module obtains, and upgrades in time when GPS information changes;
GPS information notification module, for by the target BS latest GPS message notice of described GPS information storage update module record to serving BS;
(3) switchable resource administrative unit, for being the Radio Resource of this mobile terminal administration for switching;
Described base station switchable resource administrative unit specifically comprises:
Base station switches private resource application module, for when as serving BS, switches private resource for this mobile terminal application;
Base station switches private resource receiver module, for when as serving BS, for the switching private resource of this mobile terminal receiving target base station assigns;
Switch private resource distribution module, for when as target BS, switch private resource for this mobile terminal distributes;
Switch private resource notification module, for switching dedicated resource information corresponding for the switching private resource of described switching private resource module assigns is informed to serving BS.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. realize the method switched fast in communication network, it is characterized in that, comprising:
A. mobile terminal period measures the signal strength signal intensity of serving BS and adjacent base station, and when the signal strength signal intensity of a certain adjacent base station meets switching condition, this base station is set to the target BS that will switch by terminal;
B. mobile terminal switches private resource by serving BS to target BS application, and obtains the GPS information of target BS, and common channel resources;
C. mobile terminal calculates uplink timing advance between itself and target BS according to the GPS information of target BS;
D. mobile terminal is according to described uplink timing advance, switching private resource directly accesses target BS, completes handover operation.
2. method according to claim 1, it is characterized in that, the synchronizing signal of mobile terminal also periodic measurement serving BS and adjacent base station, calculate the link budget information determining to switch according to the measurement result of described synchronizing signal, complete the down-going synchronous with target BS according to described link budget information.
3. method according to claim 1, is characterized in that, mobile terminal, by the common channel resources of target BS, obtains the link budget information switched, completes the down-going synchronous with target BS according to described link budget information.
4. according to the method in claim 2 or 3, it is characterized in that, described link budget information is and the one or more combination in the descending timing offset of target BS, frequency departure and path loss.
5. realize the system switched fast in communication network, it is characterized in that, comprising:
The mobile terminal of method described in one or more support claim 1; And the base station of method described in one or more support claim 1.
6. system according to claim 5, it is characterized in that, described mobile terminal comprises:
Period measurement unit, for measuring signal strength signal intensity, the synchronizing signal of serving BS and adjacent base station in predetermined period, for switch decision is prepared;
Switch decision unit, for the signal strength signal intensity measured according to period measurement unit, whether judgement is initiated to switch;
Handover trigger unit, for the court verdict according to switch decision unit, triggers and switches;
Handover operation unit, after switching, completes switching associative operation for handover trigger unit triggers.
7. system according to claim 6, is characterized in that, described switch decision unit, specifically comprises:
Target BS selects module, for the signal strength signal intensity of the serving BS that obtains according to measurements of period measurement unit and adjacent base station, by predetermined alternative condition, selects the target BS of switching;
Link budget module, for after target BS selects model choice target BS, the serving BS obtained according to the measurement of period measurement unit and the synchronizing signal of adjacent base station, calculate and determine and the descending timing offset of target BS, frequency departure and path loss.
8. system according to claim 6, is characterized in that, described handover trigger unit, specifically comprises:
Switch private resource application module, for when handover trigger, notification service base station switches private resource on behalf of to target BS application;
GPS information acquisition module, for when handover trigger, notification service base station is on behalf of the GPS information obtaining target BS.
9. system according to claim 6, is characterized in that, described handover operation unit, specifically comprises:
Switch private resource receiver module, for after handover trigger unit triggers switches, obtain the switching private resource that this mobile terminal is obtained to target BS application by serving BS;
GPS information receiver module, for after handover trigger unit triggers switches, receives this mobile terminal obtains the target BS obtained to target BS GPS information by serving BS;
Uplink timing advance computing unit, for the GPS information of target BS received according to GPS information receiver module, calculates the uplink timing advance with target BS;
Switch access unit, for this mobile terminal of calculating according to uplink timing advance computing unit and target BS uplink timing advance, complete to target BS access procedure switching on private resource.
10. system according to claim 5, is characterized in that, described base station comprises:
GPS module, for obtaining the GPS information of this base station, and notifies GPS information administrative unit;
GPS information administrative unit, for managing this base station GPS information obtained from GPS module;
Switchable resource administrative unit, for being the resource of this BTS management for switching.
11. systems according to claim 10, is characterized in that, described GPS information administrative unit, specifically comprises:
Base station GPS information acquisition module, for when as serving BS, for the GPS information of acquisition for mobile terminal target BS;
Base station GPS information receiver module, for when as serving BS, for the GPS information of mobile terminal receiving target base station;
GPS information storage update module, for storing the GPS information that GPS module obtains, and upgrades in time when GPS information changes;
GPS information notification module, for when as target BS, by this base station latest GPS message notice of described GPS information storage update module record to serving BS.
12. systems according to claim 10, is characterized in that, described switchable resource administrative unit, specifically comprises:
Base station switches private resource application module, for when as serving BS, switches private resource for mobile terminal application;
Base station switches private resource receiver module, for when as serving BS, for the switching private resource of mobile terminal receiving target base station assigns;
Switch private resource distribution module, for when as target BS, switch private resource for mobile terminal distributes;
Switch private resource notification module, for when as target BS, the switching dedicated resource information of described switching private resource module assigns is informed to serving BS.
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| CN201110223192.9A CN102917421B (en) | 2011-08-05 | 2011-08-05 | Method and system for realizing rapid switching in communication network |
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| CN104427571B (en) * | 2013-09-06 | 2018-09-07 | 北京信威通信技术股份有限公司 | The mobile terminal switching method that a kind of GPS for time division synchronous system is assisted |
| CN108476454B (en) * | 2016-03-11 | 2021-06-15 | 华为技术有限公司 | Micro base station-based link operation method, terminal and base station |
| CN106792960B (en) * | 2016-12-14 | 2018-01-05 | 北京邮电大学 | Cell switching method and device under a kind of high-speed mobile environment |
| US10887842B2 (en) | 2017-04-17 | 2021-01-05 | Samsung Electronics Co., Ltd. | Method and device for uplink power control |
| EP4096141A1 (en) | 2017-04-17 | 2022-11-30 | Samsung Electronics Co., Ltd. | Method and device for uplink power control |
| CN109327868B (en) * | 2017-07-31 | 2023-10-10 | 北京三星通信技术研究有限公司 | Cell measurement method and device, and cell switching method and device |
| WO2019010713A1 (en) * | 2017-07-14 | 2019-01-17 | 深圳前海达闼云端智能科技有限公司 | Method, device, and base station for terminal switching, and storage medium |
| CN117546528A (en) * | 2022-04-27 | 2024-02-09 | 京东方科技集团股份有限公司 | Communication control method, terminal device, base station, and readable storage medium |
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| CN101588624A (en) * | 2008-05-23 | 2009-11-25 | 中国移动通信集团上海有限公司 | Method and device for determining target cell |
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| US8811198B2 (en) * | 2007-10-24 | 2014-08-19 | Qualcomm Incorporated | Pilot report based on interference indications in wireless communication systems |
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| CN101222751A (en) * | 2007-01-12 | 2008-07-16 | 华为技术有限公司 | Subscriber terminal, base station and independent descending carrier configuration information transmission method and system |
| CN101588624A (en) * | 2008-05-23 | 2009-11-25 | 中国移动通信集团上海有限公司 | Method and device for determining target cell |
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