CN102379140A - Method and equipment for handing over between cells - Google Patents

Method and equipment for handing over between cells Download PDF

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Publication number
CN102379140A
CN102379140A CN2009801165954A CN200980116595A CN102379140A CN 102379140 A CN102379140 A CN 102379140A CN 2009801165954 A CN2009801165954 A CN 2009801165954A CN 200980116595 A CN200980116595 A CN 200980116595A CN 102379140 A CN102379140 A CN 102379140A
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China
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link
terminal
base station
network controller
radio
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Chinese (zh)
Inventor
胡琴涛
董旭晖
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/38—Reselection control by fixed network equipment
    • H04W36/385—Reselection control by fixed network equipment of the core network

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method, system and equipment for handing over between cells are provided. The method includes that: the terminal obtains the signal quality of current cell (S1); if the signal quality is less than the preset signal quality threshold, the first set of antenna is used to maintain the first link to the radio network controller; the second set of antenna is used to measure the neighboring cell of current cell, and obtains the measurement information (S2); through the first link, the obtained measurement information is reported to the radio network controller (S3), so that the radio network controller determines whether the terminal needs to handover between cells according to the measurement information.

Description

Method and equipment for handing over between cells
A kind of method and apparatus technical field of cell switching
The present invention relates to the communications field, more particularly to a kind of method and apparatus of cell switching.Background technology
With the popularization of mobile communication, mobile terminal UE (User Equipment) has been obtained for widely using for user, due to UE itself mobility the features such as, how to ensure when mobile, remaining to provide a user the business of high-quality, to turn into industry of interest.
Because UE may depart from the coverage of current carrier frequency on the move, it is necessary to initiate alien frequencies direct-cut operation in time, call drop is prevented.Because frequency is different before and after switching, and UE only has a set of antenna, need to start compact model subsidiary, wherein, by way of so-called compressed mode techniques are transfer capability or reduction data traffic volume increasing physical channel so that the time that each physical frame can save 3-7 time slots is used to perform alien frequencies, the measurement of different system cell.Pass through RNC (Radio Network Control ler, radio network controller）Realized to UE sending measurings control information, before RNC sending measuring control information, then RNC can set alien frequencies, the measurement control of different system cell, and activate compact model simultaneously in base station NodeB and UE configuration compressed-mode parameters first.
Inventor has found that above-mentioned prior art at least has the following disadvantages and not enough during the present invention is realized：With the development of the communication technology, UE possesses two sets of antennas via only possessing a set of antenna and develop into, using above-mentioned compact model, extra Radio Resource can be caused to take, and cause the wasting of resources of antenna.The content of the invention
When mobile terminal possesses at least two sets of antennas, in order to reduce the occupancy in alien frequencies handoff procedure to Radio Resource, the embodiments of the invention provide a kind of method and apparatus of cell switching.The technical scheme is as follows：
- aspect, the embodiments of the invention provide a kind of method of cell switching, terminal possesses a set of antenna, and the terminal also possesses at least a set of antenna, and methods described includes：
The terminal obtains the signal quality of current area；
When the signal quality is less than preset signals quality threshold, the first link with radio network controller is kept using first set antenna；The neighbor cell of current area is measured using second set of antenna, metrical information is obtained；
By first link, the metrical information of acquisition is reported into the radio network controller, to cause the radio network controller according to the metrical information, judges whether the terminal needs to carry out handover between cells. On the other hand, the embodiments of the invention provide a kind of terminal, the terminal possesses a set of antenna, and the terminal also possesses at least a set of antenna, and the terminal includes：
Acquisition module, the signal quality of current area where for obtaining the terminal；
Processing module, for when the signal quality that the acquisition module is obtained is less than preset signals quality threshold, the first link with radio network controller to be kept using first set antenna；The neighbor cell of current area is measured using second set of antenna, metrical information is obtained；
Reporting module, for passing through first link, the metrical information that the processing module is obtained reports the radio network controller, to cause the radio network controller according to the metrical information, judges whether the terminal needs to carry out handover between cells.
Another further aspect, the embodiments of the invention provide a kind of radio network controller, the radio network controller includes：Module is kept, for when the signal quality for the current area that terminal is obtained is less than preset signals quality threshold, keeping the first link using the first set antenna of the terminal and the terminal, the terminal at least possesses two sets of antennas；
Receiving module, for receiving the metrical information that the terminal is reported by first link, the metrical information is obtained after the terminal is measured using second set of antenna to the neighbor cell of current area；
Judge module, for the metrical information received according to the receiving module, judges whether the terminal needs to carry out handover between cells.
The beneficial effect of technical scheme provided in an embodiment of the present invention is：
Many set antennas that mobile terminal is possessed are made full use of, the first link with radio network controller is kept using first set antenna；The neighbor cell of current area is measured using second set of antenna, metrical information is obtained；By the first link, the metrical information of acquisition is reported into radio network controller, the judgement switched over by radio network controller, so as to reduce the occupancy in alien frequencies handoff procedure to Radio Resource.Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the method for cell switching provided in an embodiment of the present invention；
Fig. 2 is the alien frequencies handoff scenario schematic diagram that the embodiment of the present invention 1 is provided；
Fig. 3 is the schematic flow sheet of the method for the cell switching that the embodiment of the present invention 1 is provided；
Fig. 4 is the terminal schematic diagram that the embodiment of the present invention 2 is provided； Fig. 5 is another schematic diagram of terminal that the embodiment of the present invention 2 is provided；
Fig. 6 is the terminal detailed maps that the embodiment of the present invention 2 is provided；
Fig. 7 is the radio network controller schematic diagram that the embodiment of the present invention 3 is provided；
Fig. 8 is another schematic diagram of radio network controller that the embodiment of the present invention 3 is provided；
Fig. 9 is the radio network controller detailed maps that the embodiment of the present invention 3 is provided；
Figure 10 is the system schematic for the cell switching that the embodiment of the present invention 4 is provided.Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
When mobile terminal possesses at least two sets of antennas, in order to reduce the occupancy in alien frequencies handoff procedure to Radio Resource, UE switching time and risk of dropped calls is reduced, the embodiments of the invention provide a kind of method of cell switching, referring to Fig. 1, this method content is as follows：
S1：Terminal obtains the signal quality of current area；
S2 :When signal quality is less than preset signals quality threshold, the first link with radio network controller is kept using first set antenna；The neighbor cell of current area is measured using second set of antenna, metrical information is obtained；
S3 :By the first link, the metrical information of acquisition is reported into radio network controller, to cause radio network controller according to metrical information, judges whether terminal needs to carry out handover between cells.
Further, when terminal needs to carry out handover between cells, method also includes：
Terminal passes through the base station of Target cell using second set of antenna, sets up the second link with radio network controller；After second link establishment success, the first link is deleted.
The method of cell switching provided in an embodiment of the present invention, many set antennas for making full use of mobile terminal to be possessed keep the first link with radio network controller using first set antenna；The neighbor cell of current area is measured using second set of antenna, metrical information is obtained；Pass through the first link, the metrical information of acquisition is reported into radio network controller, the judgement switched over by radio network controller, so as to reduce the occupancy in alien frequencies handoff procedure to Radio Resource, and and then set up new link using second set of antenna, by way of first setting up new link and disconnecting old link again, UE switching time and risk of dropped calls is reduced.
In order to which the method that the embodiments of the present invention are provided is described in detail, following examples are referred to：Embodiment 1
The embodiments of the invention provide a kind of method of cell switching, when mobile terminal possesses at least two sets of antennas, by this Method reduces the occupancy to Radio Resource in alien frequencies handoff procedure, reduces UE switching time and risk of dropped calls.It is alien frequencies handoff scenario schematic diagram provided in an embodiment of the present invention referring to Fig. 2 in order to which method provided in an embodiment of the present invention is described in detail, wherein, UE possesses at least two sets antennas（The present embodiment is for convenience of description by taking two sets of antennas X, Y as an example）, referring to Fig. 3, this method content is as follows：
Step 101:UE obtains the signal quality of currently used frequency.
By taking scene shown in above-mentioned Fig. 2 as an example, UE obtains the signal quality under currently used frequency under certain cell that NodeBl is covered, i.e. obtain the signal quality under the carrier frequency that the current areas of NodeBl coverings can be provided.
Step 102:Judge whether the signal quality obtained is less than preset signals quality threshold, if it is, performing step 103;Otherwise, step 117 is performed.
Wherein, above-mentioned preset signals quality threshold is set according to specific needs.
Step 103:UE keeps the link with RNC using antenna X, and surrounding's frequency of currently used frequency is measured using antenna Y, obtains metrical information.
Wherein, it can include in metrical information：Current area and neighbor cell CPICH (Common Pi lot Channel, CPICH Common Pilot Channel）Ec/No, the relative time difference of current area and neighbor cell can also be included.
Wherein, Ec represents the average energy of a Chip chip, and No represents the power spectral density of white noise, and Ec/No represents the ratio between energy and noise power of each modulation bit.Due to the time irreversibility of minizone, it is understood that there may be the difference of relative time, therefore, in order to ensure that service after switching is unaffected, the relative time difference of current area and each neighbor cell can be obtained.
Step 104:The link that UE is kept by antenna X and RNC, RNC is reported by the metrical information of acquisition.
For example, it is assumed that UE triggers measurement under cell A, its adjacent cell 8, C, D Ec/No and time difference are got respectively, are signal table provided in an embodiment of the present invention referring to table 1.
Table 1
As shown in table 1, the above-mentioned metrical information that UE is got, wherein, current area A and cell B time difference are T1;Current area A and cell C time difference are T2;Current area A and cell D time difference are T3.Correspondingly, above- mentioned information UE obtained reports RNC by antenna X and the RNC link kept.
Step 105:RNC receives the metrical information that UE is reported by the link of the antenna X holdings with UE, according to the Ec/No carried in metrical information, judges whether UE needs to carry out alien frequencies direct-cut operation, if it is, performing step 106;Otherwise, step 117 is performed. Wherein, still illustrated with above-mentioned example, RNC receives the Ec/No (B) carried in the metrical information that UE is reported, Ec/No (C), after Ec/No (D), according to default handoff threshold, judge whether to carry out alien frequencies direct-cut operation to UE, for example, Ec/No (B), Ec/No (C), Ec/No (D) is respectively 30, 40, 15, and the default handoff threshold value is 20, then due to there is the numerical value more than the default handoff threshold value in the Ec/No that receives, then determine to need to perform alien frequencies direct-cut operation to the UE, perform following step 106.
Step 106:RNC from the cell that UE is reported, selects Target cell according to default selection rule.
Wherein, as shown in table 1, it is assumed that there are multiple Ec/No values in the cell that UE is reported and be more than default handoff threshold value, then
RNC can according to the sizes of Ec/No values, maximum one in therefrom selecting, using the corresponding cell of the maximum Ec/No values as switching Target cell；Or, RNC can also arbitrarily select one of them from multiple Ec/No values more than default handoff threshold value, Target cell of the corresponding cell of Ec/No values that this is selected as switching.The embodiment of the present invention does not do any limitation to this.For convenience of description, referring to Fig. 2, the present embodiment is so that the Target cell that RNC is selected is cell C as an example, and base station where cell C is NodeB2.
Step 107:RNC sends wireless link request according to Target cell to the corresponding base station of the Target cell.
Step 108:The corresponding base station of Target cell is received after wireless link request, and wireless link request is sent into UE, and is asked according to wireless link, and the physical channel of Target cell is configured for the UE.
Wherein, the corresponding base station of Target cell, can be by the way of transparent transmission when wireless link request is sent into UE, and the present embodiment is without limitation.
Step 109:UE is received after the wireless link request that the corresponding base station of Target cell is sent by antenna Y, and uplink synchronizing signals are sent to the base station.
Step 110:The corresponding base station of Target cell is received after the uplink synchronizing signals that UE is reported by antenna Y, sends wireless link response to RNC, and send downlink data to UE.
Wherein, the corresponding base station of Target cell is received after the uplink synchronizing signals that UE is reported by antenna Y, perform and the UE time difference synchronization.
Step 111:RNC receives the wireless link response that the corresponding base station of Target cell is returned, by the corresponding base station of Target cell, sends Radio Link increase to UE and asks.
Wherein, Radio Link increase request can be wireless link-activation collection new information.As shown in Fig. 2 RNC is received after the wireless link response of NodeB2 returns, via DCCH (Dedicated Control Channel, DCCH）Carry to NodeB2 and issue wireless link-activation collection new information（The wireless link-activation collection new information is used to indicate that UE carries out Radio Link increase）, wherein, the wireless link-activation collection new information passes through NodeB2 transparent transmissions（Illustrated by taking transparent transmission as an example）Afterwards, send to UE.
Step 112:UE receives Radio Link increase request, the Radio Link set up by antenna Y between RNC, and UE is to RNC Return to Radio Link increase response.
Wherein, if it is specifically the wireless link-activation collection new information that RNC is issued that UE, which receives Radio Link increase request, it can be specially that wireless link-activation set updates completion message to return to Radio Link increase response to RNC herein.
Step 113:RNC receives the Radio Link increase response that UE is reported, and radio link deletion request is issued to UE by the corresponding base station in current area.
Wherein, as shown in Figure 2, RNC is received after the Radio Link increase response of NodeB2 returns, the original Radio Link set up between NodeBl for UE of release, wireless link-activation collection new information is issued to UE through NodeBl by DCCH carryings, the wireless link-activation collection new information is used to indicate that UE carries out Radio Link deletion.
Step 114:UE is received after the radio link deletion request that RNC is issued, the link circuit deleting between RNC that will be set up before by antenna X, and returning to Radio Link by the antenna Y chain road direction RNC between RNC set up deletes response.
Wherein, if it is wireless link-activation collection new information that RNC is issued that UE, which is received, it is specially that wireless link-activation set updates completion message to return to Radio Link to delete response to RNC herein.
Step 115:RNC receives the Radio Link deletion response that UE is returned, and radio link deletion request is sent to the corresponding base station in current area.
Step 116:The corresponding base station in current area receives radio link deletion request, discharges Radio Resource, and returns to Radio Link and deletes response.
Wherein, the corresponding base station in current area can pass through NBAP (NodeB Application Part, base station application part）Message realizes that returning to Radio Link to RNC deletes response.Wherein, the Radio Link, which deletes response, to be sent by the first link set up before, but what other paths for being connected with radio network controller of the base station by current area were sent, so deleting after the first link, the corresponding base station in current area is still able to return to Radio Link deletion response to RNC.Alternatively, the corresponding base station in current area can not also return to Radio Link to RNC and delete response, the present embodiment is without limitation after release Radio Resource.
Step 117:Do not perform action.
The explanation that above-mentioned the present embodiment is only carried out so that mobile terminal possesses two sets of antennas as an example, it will be appreciated by those skilled in the art that this method applies also for the situation that mobile terminal possesses more than two sets antennas.The present embodiment is with WCDMA (Wideband Code-Division Multiple Access, the access of broadband demal multiplexing）The explanation carried out exemplified by system, those skilled in the art can be known, method provided in an embodiment of the present invention is also applicable the communication system similar with the scene, such as GSM (Global System for Mobile Communications, global system for mobile communications）Mobile terminal possesses the scene of two sets of antennas in system, and the present embodiment does not do any limitation to this.
The method of cell switching provided in an embodiment of the present invention, when mobile terminal possesses two sets of antennas, many set antennas for making full use of mobile terminal to be possessed keep the first link with radio network controller using first set antenna；Utilize second set of day Line is measured to the neighbor cell of current area, obtains metrical information；Pass through the first link, the metrical information of acquisition is reported into radio network controller, the judgement switched over by radio network controller, so as to reduce the occupancy in alien frequencies handoff procedure to Radio Resource, and and then set up new link using the second antenna, by way of first setting up new link and disconnecting old link again, UE switching time and risk of dropped calls is reduced.Embodiment 2
It is corresponding with above method embodiment, in order to reduce the occupancy in alien frequencies handoff procedure to Radio Resource, the embodiments of the invention provide a kind of terminal, wherein, the terminal at least possesses two sets of antennas, and referring to Fig. 4, terminal includes：
Acquisition module 401, the signal quality of current area where for obtaining terminal；
Processing module 402, during for determining that the signal quality that acquisition module 401 is obtained is less than preset signals quality threshold, the first link with radio network controller is kept using first set antenna；The neighbor cell of current area is measured using second set of antenna, metrical information is obtained；
Reporting module 403, for by the first link, the metrical information that processing module 402 is obtained to report radio network controller, to cause radio network controller according to metrical information, judges whether terminal needs to carry out handover between cells.
Further, referring to Fig. 5, when terminal needs to carry out handover between cells, terminal also includes：
Module 404 is set up, the second link with radio network controller is set up in the base station for passing through Target cell using second set of antenna；
It is specifically as follows：When terminal is after setting up module 404 and receive the switching command of radio network controller, utilize second set of antenna to pass through the base station of Target cell, set up and radio network controller the second link.
Removing module 405, for after module 404 is set up by the second link establishment success, deleting the first link.
Wherein, referring to Fig. 6, module 404 is set up, including：
First receiving unit 4041, for receiving by the wireless link request of the base station transmission of Target cell, wireless link request be radio network controller according to metrical information, select after Target cell, issued to the base station of Target cell from the neighbor cell that terminal is reported；
First transmitting element 4042, for after the first receiving unit 4041 receives wireless link request, uplink synchronizing signals are sent to the base station of Target cell by physical channel, physical channel is that the base station of Target cell is received after wireless link request as terminal configuration；
Second receiving unit 4043, request is increased by the Radio Link of the base station transmission of Target cell for receiving, Radio Link increase request is that the base station of Target cell receives uplink synchronizing signals, return after wireless link response, issued from radio network controller to the base station of Target cell to radio network controller；
Unit 4044 is set up, for after the second receiving unit 4043 receives Radio Link increase request, passing through second set of day Line sets up the second link with radio network controller by the base station of Target cell.
Wherein, referring to Fig. 6, removing module 405, including：
Second transmitting element 4051, for after unit 4044 is set up by the second link establishment success, returning to Radio Link increase to radio network controller and responding；
3rd receiving unit 4052, for receiving by the radio link deletion request of the base station transmission of current area, radio link deletion request is that radio network controller is received after Radio Link increase response, is issued to the base station of current area；
Delete unit 4053, for after the 3rd receiving unit 4052 receives radio link deletion request, delete the first link, and Radio Link deletion response is returned to by the second chain road direction radio network controller, to cause radio network controller receives Radio Link to delete after response, radio link deletion request is sent to the base station of current area so that the base station of current area is received after radio link deletion request, Radio Resource is discharged, and Radio Link is returned to RNC and deletes response.
Terminal provided in an embodiment of the present invention, when terminal possesses two sets of antennas, two sets of antennas for making full use of terminal to be possessed keep the link with radio network controller using first set antenna；The neighbor cell of current area is measured using second set of antenna, metrical information is obtained；Pass through the first link, the metrical information of acquisition is reported into radio network controller, the judgement switched over by radio network controller, so as to reduce the occupancy in alien frequencies handoff procedure to Radio Resource, and and then set up new link using the second antenna, by way of first setting up new link and disconnecting old link again, UE switching time and risk of dropped calls is reduced.Embodiment 3
It is corresponding to above method embodiment and terminal embodiment, in order to reduce the occupancy in the terminal different frequency handoff procedure at least possessing two sets of antennas to Radio Resource, the embodiments of the invention provide a kind of radio network controller, referring to Fig. 7, radio network controller includes：
Module 601 is kept, for when the signal quality for the current area that terminal is obtained is less than preset signals quality threshold, keeping the first link using the first set antenna and terminal of terminal, terminal at least possesses two sets of antennas；
Receiving module 602, the metrical information reported for receiving terminal by the first link, metrical information is obtained after terminal is measured using second set of antenna to the neighbor cell of current area；
Judge module 603, for the metrical information received according to receiving module 602, judges whether terminal needs to carry out handover between cells.
Wherein, the metrical information that above-mentioned terminal is reported includes：The Ec/No values of the CPICH Common Pilot Channel of current area and neighbor cell；Correspondingly, judge module 603 includes：
Judging unit, for according to predetermined threshold value and the Ec/No values reported, judging whether terminal needs to carry out handover between cells. Further, when terminal needs to carry out handover between cells, referring to Fig. 8, radio network controller also includes：Module 604 is set up, for after the result that judge module 603 judges is that terminal needs to carry out handover between cells, by the base station of Target cell, the second link with terminal to be set up using second set of antenna of terminal；
Removing module 605, for after module 604 is set up by the second link establishment success, deleting the first link.
Wherein, referring to Fig. 9, setting up module 604 includes：
Selecting unit 6041, for the metrical information received according to receiving module 602, Target cell is selected from the neighbor cell that terminal is reported；
First transmitting element 6042, for after selecting unit 6041 selects Target cell, wireless link request to be issued to the base station of Target cell；To cause the base station of Target cell to configure physical channel after receiving wireless link request for terminal, and wireless link request is sent to terminal, to cause terminal to receive after wireless link request, uplink synchronizing signals are sent to the base station of Target cell by physical channel；
First receiving unit 6043, for receiving wireless link response, wireless link response is, when the base station of Target cell receives uplink synchronizing signals, to be returned to radio network controller；
Second transmitting element 6044, for after the first receiving unit 6043 receives wireless link response, Radio Link increase request is issued to the base station of Target cell, to cause the base station of Target cell that Radio Link increase request is sent into terminal, so that terminal receives Radio Link increase request, the second link with radio network controller is set up by the base station of Target cell by second set of antenna.
Wherein, referring to Fig. 9, removing module 605, including：
Second receiving unit 6051, for the Radio Link increase response that after the second link establishment success, receiving terminal is returned;3rd transmitting element 6052, for after the second receiving unit 6051 receives Radio Link increase response, radio link deletion request to be issued to the base station of current area；So that radio link deletion request is sent to terminal by the base station for obtaining current area so that terminal is received after radio link deletion request, the first link is deleted；
3rd receiving unit 6053, for after the first link is deleted, the Radio Link that receiving terminal is returned by the second link to delete response；
4th transmitting element 6054, deleted for receiving the Radio Link that terminal is returned by the second link after response, radio link deletion request is sent to the base station of current area, so that the base station of current area is received after radio link deletion request, Radio Resource is discharged, Radio Link is returned and deletes response；
4th receiving unit 6055, the Radio Link returned after Radio Resource deletion response is discharged for receiving the base station of current area.：
Wherein, Radio Link delete response be not by the first link send, but the base station by current area be connected with radio network controller other paths transmission. Radio network controller provided in an embodiment of the present invention, because terminal possesses at least two sets antennas, then keeps the link with radio network controller using first set antenna；The neighbor cell of current area is measured using second set of antenna, metrical information is obtained；Pass through the first link, the metrical information of acquisition is reported into radio network controller, the judgement switched over by radio network controller, so as to reduce the occupancy in alien frequencies handoff procedure to Radio Resource, and and then set up new link using the second antenna, by way of first setting up new link and disconnecting old link again, UE switching time and risk of dropped calls is reduced.Embodiment 4
It is corresponding to above method embodiment, in order to reduce the occupancy in the terminal different frequency handoff procedure at least possessing two sets of antennas to Radio Resource, UE switching time and risk of dropped calls is reduced, the embodiments of the invention provide a kind of system of cell switching, referring to Figure 10, system includes：Possess terminal 801, the radio network controller 802 of at least two sets antennas, wherein.
Terminal 801, the signal quality for obtaining the place current area of terminal 801；It is determined that when the signal quality obtained is less than preset signals quality threshold, the first link with radio network controller 802 is kept using first set antenna；The neighbor cell of current area is measured using second set of antenna, metrical information is obtained；By the first link, the metrical information of acquisition is reported into radio network controller 802, to cause radio network controller 802 according to metrical information, judges whether terminal 801 needs to carry out handover between cells；
Radio network controller 802, for when the signal quality for the current area that terminal 801 is obtained is less than preset signals quality threshold, the first link to be kept using the first set antenna and terminal 801 of terminal 801；It is additionally operable to the metrical information that receiving terminal 801 is reported by the first link；The metrical information according to reception is additionally operable to, judges whether terminal 801 needs to carry out handover between cells.
Further, when terminal 801 needs to carry out handover between cells, shellfish U,
Terminal 801, is additionally operable to be passed through using second set of antenna the base station of Target cell, sets up the second link with radio network controller 802；It is additionally operable to after module 404 is set up by the second link establishment success, delete the first link；
Correspondingly,
Radio network controller 802, is additionally operable to the base station by Target cell, and the second link with terminal 801 is set up using second set of antenna of terminal 801；After the second link establishment success, the first link is deleted.
The system of cell switching provided in an embodiment of the present invention, because terminal possesses at least two sets antennas, then keeps the link with radio network controller using first set antenna；The neighbor cell of current area is measured using second set of antenna, metrical information is obtained；Pass through the first link, the metrical information of acquisition is reported into radio network controller, the judgement switched over by radio network controller, so as to reduce the occupancy in alien frequencies handoff procedure to Radio Resource, and and then set up new link using the second antenna, by way of first setting up new link and disconnecting old link again, UE switching time and risk of dropped calls is reduced. It can also receive the information that other modules are sent that " reception " word in the embodiment of the present invention, which can be understood as actively obtaining from other modules,.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module or flow in accompanying drawing are not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in embodiment can be distributed in the device of embodiment according to embodiment description, respective change can also be carried out and be disposed other than in one or more devices of the present embodiment.The module of above-described embodiment can be merged into a module, can also be further split into multiple submodule.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
Part steps in the embodiment of the present invention, it is possible to use software realizes that corresponding software program can be stored in the storage medium that can be read, such as CD or hard disk.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims (1)

  1. Claims
    1st, a kind of method of cell switching, terminal possesses a set of antenna, it is characterised in that the terminal also possesses at least a set of antenna, and methods described includes：
    The terminal obtains the signal quality of current area；
    Determine that the signal quality is less than after preset signals quality threshold, the first link with radio network controller is kept using first set antenna；The neighbor cell of current area is measured using second set of antenna, metrical information is obtained；
    By first link, the metrical information of acquisition is reported into the radio network controller, to cause the radio network controller according to the metrical information, judges whether the terminal needs to carry out handover between cells.
    2nd, the method as described in claim 1, it is characterised in that the metrical information includes：The ratio between the energy and noise power of each modulation bit of the CPICH Common Pilot Channel of the current area and neighbor cell Ec/No values；
    It is described to judge whether the terminal needs to carry out handover between cells according to the metrical information, including：
    According to predetermined threshold value and the Ec/No values reported, judge whether the terminal needs to carry out handover between cells.
    3rd, method as claimed in claim 2, it is characterised in that
    The metrical information also includes：Current area and the time difference of the neighbor cell, the time difference are used to, when performing cell switching, according to Target cell and the time difference of current area, perform time synchronized.
    4th, the method as described in claim 1 or 2 or 3 any claims, it is characterised in that when the terminal needs to carry out handover between cells, methods described also includes：
    The terminal passes through the base station of the Target cell using second set of antenna, sets up the second link with the radio network controller；
    After the second link establishment success, first link is deleted.
    5th, method as claimed in claim 4, it is characterised in that the terminal passes through the base station of the Target cell using second set of antenna by the base station of Target cell, sets up the second link with the radio network controller, including：The terminal receives the wireless link sent by the base station of the Target cell and asked, the wireless link request is selected after Target cell in being the neighbor cell that the radio network controller is reported from the terminal, is issued to the base station of the Target cell；
    After the terminal receives the wireless link request, uplink synchronizing signals are sent to the base station of the Target cell by physical channel, the physical channel is that to receive after wireless link request be what the terminal was configured for the base station of the Target cell；
    The terminal, which receives the Radio Link sent by the base station of the Target cell, increases request, the Radio Link increase request is that the base station of the Target cell receives the uplink synchronizing signals, return after wireless link response, issued from the base station of the radio network controller to the Target cell to the radio network controller； After the terminal receives the Radio Link increase request, the second link with the radio network controller is set up by the base station of the Target cell by second set of antenna.
    6th, the method as described in any claim of claim 4 or 5, it is characterised in that after the second link establishment success, delete first link, including：
    The terminal returns to Radio Link increase to the radio network controller and responded；
    The terminal receives the radio link deletion request sent by the base station of the current area, and the radio link deletion request is that the radio network controller is received after the Radio Link increase response, is issued to the base station of the current area；After the terminal receives the radio link deletion request, delete first link, and Radio Link deletion response is returned to by radio network controller described in the second chain road direction, to cause the radio network controller receives the Radio Link to delete after response, radio link deletion request is sent to the base station of the current area, so that the base station of the current area is received after the radio link deletion request, Radio Resource is discharged, and Radio Link is returned to the radio network controller and deletes response.
    7th, a kind of terminal, the terminal possesses a set of antenna, it is characterised in that the terminal also possesses at least a set of antenna, and the terminal includes：
    Acquisition module, the signal quality of current area where for obtaining the terminal；
    Processing module, during for determining that the signal quality that the acquisition module is obtained is less than preset signals quality threshold, the first link with radio network controller is kept using first set antenna；The neighbor cell of current area is measured using second set of antenna, metrical information is obtained；
    Reporting module, for passing through first link, the metrical information that the processing module is obtained reports the radio network controller, to cause the radio network controller according to the metrical information, judges whether the terminal needs to carry out handover between cells.
    8th, the terminal as described in claim 7, it is characterised in that when the terminal needs to carry out handover between cells, the terminal also includes：
    Module is set up, the second link with the radio network controller is set up in the base station for passing through the Target cell using second set of antenna；
    Removing module, for when it is described set up module by second link establishment success after, delete first link.
    9th, terminal as claimed in claim 8, it is characterised in that described to set up module, including：
    First receiving unit, for receiving by the wireless link request of the base station transmission of the Target cell, the wireless link request is the radio network controller according to the metrical information, select after Target cell, issued to the base station of the Target cell in the neighbor cell reported from the terminal；
    First transmitting element, for after first receiving unit receives the wireless link request, passing through physics Passage sends uplink synchronizing signals to the base station of the Target cell, and the physical channel is that to receive after wireless link request be what the terminal was configured for the base station of the Target cell；
    Second receiving unit, request is increased by the Radio Link of the base station transmission of the Target cell for receiving, the Radio Link increase request is that the base station of the Target cell receives the uplink synchronizing signals, return after wireless link response, issued from the base station of the radio network controller to the Target cell to the radio network controller；
    Unit is set up, for after second receiving unit receives the Radio Link increase request, the second link with the radio network controller to be set up by the base station of the Target cell by second set of antenna.
    10th, terminal as claimed in claim 8 or 9, it is characterised in that the removing module, including：
    Second transmitting element, for when it is described set up unit by second link establishment success after, to the radio network controller return Radio Link increase respond；
    3rd receiving unit, for receiving by the radio link deletion request of the base station transmission of the current area, the radio link deletion request is that the radio network controller is received after the Radio Link increase response, is issued to the base station of the current area；
    Delete unit, for after the 3rd receiving unit receives the radio link deletion request, delete first link, and Radio Link deletion response is returned to by radio network controller described in the second chain road direction, to cause the radio network controller receives the Radio Link to delete after response, radio link deletion request is sent to the base station of the current area, so that the base station of the current area is received after the radio link deletion request, Radio Resource is discharged, and Radio Link is returned to the radio network controller and deletes response.
    11st, a kind of radio network controller, it is characterised in that the radio network controller includes：
    Module is kept, for when the signal quality for the current area that terminal is obtained is less than preset signals quality threshold, keeping the first link using the first set antenna of the terminal and the terminal, the terminal at least possesses two sets of antennas；
    Receiving module, for receiving the metrical information that the terminal is reported by first link, the metrical information is obtained after the terminal is measured using second set of antenna to the neighbor cell of current area；
    Judge module, for the metrical information received according to the receiving module, judges whether the terminal needs to carry out handover between cells.
    12nd, radio network controller as claimed in claim 11, it is characterised in that the metrical information includes：The ratio between the energy and noise power of each modulation bit of the CPICH Common Pilot Channel of the current area and neighbor cell Ec/No values；The judge module includes：
    Judging unit, for according to predetermined threshold value and the Ec/No values reported, judging whether the terminal needs to carry out handover between cells. 13rd, the radio network controller as described in any claim of claim 11 or 12, it is characterised in that the radio network controller also includes：
    Module is set up, for after the result that the judge module judges is that the terminal needs to carry out handover between cells, by the base station of Target cell, the second link with the terminal to be set up using second set of antenna of the terminal；
    Removing module, for when it is described set up module by second link establishment success after, delete first link.
    14th, radio network controller as claimed in claim 13, it is characterised in that the module of setting up includes：Selecting unit, for the metrical information received according to the receiving module, Target cell is selected in the neighbor cell reported from the terminal；
    First transmitting element, for after the selecting unit selects the Target cell, wireless link request to be issued to the base station of the Target cell；To cause the base station of the Target cell is received after the wireless link request to be the terminal configuration physical channel；And wireless link request is sent to the terminal, to cause the terminal to receive after the wireless link request, uplink synchronizing signals are sent to the base station of the Target cell by the physical channel；First receiving unit, for receiving wireless link response, the wireless link response is, when the base station of the Target cell receives the uplink synchronizing signals, to be returned to the radio network controller；
    Second transmitting element, for after first receiving unit receives the wireless link response, Radio Link increase request is issued to the base station of the Target cell, to cause the base station of the Target cell that Radio Link increase request is sent into the terminal, so that the terminal receives the Radio Link increase request, the second link with the radio network controller is set up by the base station of the Target cell by second set of antenna.
    15th, radio network controller as claimed in claim 13, it is characterised in that the removing module, including：Second receiving unit, for after second link establishment success, receiving the Radio Link increase response that the terminal is returned；
    3rd transmitting element, for after second receiving unit receives the Radio Link increase response, radio link deletion request to be issued to the base station of the current area；To cause the base station of the current area that the radio link deletion request is sent into the terminal so that the terminal is received after the radio link deletion request, first link is deleted；3rd receiving unit, response is deleted for after first link is deleted, receiving the Radio Link that the terminal is returned by the second link；
    4th transmitting element, deleted for receiving the Radio Link that the terminal is returned by second link after response, radio link deletion request is sent to the base station of the current area, so that the base station of the current area is received after the radio link deletion request, Radio Resource is discharged, Radio Link is returned and deletes response；
    4th receiving unit, the Radio Link returned after Radio Resource deletion response is discharged for receiving the base station of the current area.
CN2009801165954A 2009-03-20 2009-03-20 Method and equipment for handing over between cells Pending CN102379140A (en)

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Application publication date: 20120314