CN101932042A - Cell switching method, equipment and system - Google Patents
Cell switching method, equipment and system Download PDFInfo
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- CN101932042A CN101932042A CN2009100869069A CN200910086906A CN101932042A CN 101932042 A CN101932042 A CN 101932042A CN 2009100869069 A CN2009100869069 A CN 2009100869069A CN 200910086906 A CN200910086906 A CN 200910086906A CN 101932042 A CN101932042 A CN 101932042A
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Abstract
The invention discloses a cell switching method, cell switching equipment and a cell switching system. The method comprises the following steps that: a radio network controller (RNC) receives a measurement report transmitted by a user terminal and sends a reconfiguration message to the user terminal according to the measurement report, wherein the reconfiguration message carries the activation time of the cell switching by the user terminal; the RNC transmits a radio link deactivation command to a base station, wherein the radio link deactivation command carries the deactivation time of a source cell and the deactivation time is the same as the activation time carried by the reconfiguration message; and the RNC receives a reconfiguration completion message sent by the user terminal and deletes a radio link of the source cell. In the invention, the RNC transmits the deactivation command to the source cell of the base station, so that the source cell stops transmitting data in a cell switching process.
Description
Technical field
The present invention relates to the communications field, relate in particular to the method, apparatus and system that switch a kind of sub-district.
Background technology
In the prior art, the process that switch the minizone may further comprise the steps as shown in Figure 1:
1, after RNC received the measurement report (MEASUREMENT REPORT) of UE, decision was switched.
2, RNC sends Radio Link to the base station and sets up (RADIO LINK SETUP REQUEST) or Radio Link increase (RADIO LINK ADDITION REQUEST) message, sets up Radio Link at Target cell.
3, Target cell returns Radio Link foundation/increase response.
4, RNC sends physical channel reconfiguration message (PHYSICAL CHANNEL RECONFIGURATION), transmission channel reconfiguration message (TRANSPORT CHANNLE RECONFIGURATION) or RB reconfiguration message (RADIO BEARER RECONFIGURATION) to terminal, carries activationary time (Active Time) in the message.
Concrete, the resource situation before and after RNC can switch according to the sub-district selects the kind of message to send reconfiguration information to terminal.
5, at the activationary time point, terminal begins to finish synchronously at Target cell, and returns to reshuffle to RNC and finish message.
6, the base station wireless link synchronization that detects Target cell is finished, and reports wireless link recovery indication (RADIO LINK RESTORE INDICATION) to RNC.
7, RNC receive reshuffle finish the indication of message and wireless link recovery after, the Radio Link of deletion cell-of-origin, switching is finished.
In the said process, RNC carries activationary time (Active Time) in the reconfiguration message that terminal sends.In handoff procedure, after UE arrived activationary time, UE began to the Target cell transmit uplink signal, and after Target cell obtained uplink synchronous, beginning sent downlink data to UE.
Through to the analysis of cell switching method in the above-mentioned prior art, the inventor thinks and has following shortcoming in the prior art at least:
Between Target cell and UE, carry out in the process of data interaction, the base station does not also know that UE has begun to receive data at Target cell, therefore the base station can be continued at cell-of-origin transmission signal, detect the Radio Link uplink loss of cell-of-origin up to the base station, or the Radio Link deletion, can stop emission.
But, the wrong report that detects for fear of radio link failure and, improve user's impression to the influence of normal users, the base station detects the time of radio link failure, and what can not be provided with is too short, generally all in 3-4 second.In this time period, because the base station still sends downlink data in the cell-of-origin, this part data will produce an interference to other sub-district.Especially when switching with frequency, this disturbs the particularly serious of performance, causes handover success rate to reduce.
Summary of the invention
The invention provides the method, apparatus and system that switch a kind of sub-district, arrive the sub-district during switching time to be implemented in, the base station in time stops the transmission of the downlink data of cell-of-origin, and the redundant data that the reduction cell-of-origin issues produces interference to the user in the adjacent sub-district, improves the sub-district success rate for switching.
The invention provides the method that switch a kind of sub-district, comprising:
Radio network controller receives the measurement report that user terminal sends, and sends reconfiguration message according to described measurement report to described user terminal, carries described user terminal in the described reconfiguration message and carries out the activationary time that switch the sub-district;
Described radio network controller sends Radio Link deexcitation order to the base station; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time;
Described radio network controller receives reshuffling of described user terminal transmission and finishes message, deletes the Radio Link of described cell-of-origin.
Described radio network controller receives reshuffling of described user terminal transmission and finishes before the message, also comprises:
When arriving described activationary time, described base station receives the upward signal that described user terminal sends to Target cell, and sends downlink data according to described upward signal to described user terminal; Simultaneously
Described base station stops described cell-of-origin according to the described deexcitation time and sends downlink data to described user terminal.
Described base station stops described cell-of-origin after described user terminal sends downlink data according to the described deexcitation time, also comprises:
Described base station is proceeded uplink synchronous by the Radio Link of described cell-of-origin and is detected;
When detecting uplink synchronous, described base station recovers to carry out the transmission of downlink data to described user terminal by the Radio Link of described cell-of-origin.
Also carry the identification information that described user terminal carries out the Target cell of sub-district switching in the described reconfiguration message;
Described radio network controller carries the identification information of deexcitation indication, deexcitation time and the described cell-of-origin of described cell-of-origin in the Radio Link deexcitation order that described base station sends.
The invention provides the method that switch a kind of sub-district, comprising:
The base station is forwarded to user terminal with the reconfiguration message that radio network controller sends, and carries described user terminal in the described reconfiguration message and carries out the activationary time that switches the sub-district, the cell ID of Target cell;
Described base station receives the Radio Link deexcitation order that described radio network controller sends; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time;
When arriving described activationary time, described base station receives the upward signal that described user terminal sends to described Target cell, and sends downlink data according to described upward signal to described user terminal; Stop described cell-of-origin according to the described deexcitation time simultaneously and send downlink data to described user terminal.
Method provided by the invention also comprises:
Described base station is proceeded uplink synchronous by the Radio Link of described cell-of-origin and is detected;
When detecting uplink synchronous, described base station recovers to carry out the transmission of downlink data to described user terminal by the Radio Link of described cell-of-origin.
Method provided by the invention also comprises:
Described base station is transmitted reshuffling of described user terminal transmission to described radio network controller and is finished message, deletes the Radio Link of described cell-of-origin according to the link circuit deleting message that described radio network controller sends.
The invention provides a kind of radio network controller, be applied to the sub-district and switch, be connected, comprising with base station and user terminal:
The reconfiguration message transmitting element is used to receive the measurement report that user terminal sends, and sends reconfiguration message according to described measurement report to described user terminal, carries described user terminal in the described reconfiguration message and carries out the activationary time that switch the sub-district;
The link command transmitting element is used for sending Radio Link deexcitation order to the base station; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time;
The link circuit deleting unit is used to receive reshuffling of described user terminal transmission and finishes message, deletes the Radio Link of described cell-of-origin.
Also carry the identification information that described user terminal carries out the Target cell of sub-district switching in the described reconfiguration message;
Described radio network controller carries the identification information of deexcitation indication, deexcitation time and the described cell-of-origin of described cell-of-origin in the Radio Link deexcitation order that described base station sends.
The invention provides a kind of base station, comprising:
The reconfiguration message retransmission unit is used for the reconfiguration message that radio network controller sends is forwarded to user terminal, carries described user terminal in the described reconfiguration message and carries out the activationary time that switches the sub-district, the cell ID of Target cell;
Deexcitation order receiving element is used to receive the Radio Link deexcitation order that described radio network controller sends; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time;
Data transmission unit is used for receiving the upward signal that described user terminal sends to described Target cell when arriving described activationary time, and sends downlink data according to described upward signal to described user terminal; Stop described cell-of-origin according to the described deexcitation time simultaneously and send downlink data to described user terminal.
Described data transmission unit also is used for:
Proceeding uplink synchronous by the Radio Link of described cell-of-origin detects; When detecting uplink synchronous, recover to carry out the transmission of downlink data to described user terminal by the Radio Link of described cell-of-origin.
Described reconfiguration message retransmission unit also is used for:
Transmit reshuffling of described user terminal transmission to described radio network controller and finish message, delete the Radio Link of described cell-of-origin according to the link circuit deleting message that described radio network controller sends.
The invention provides the system that switch a kind of sub-district, comprise radio network controller, base station and user terminal, wherein
Described radio network controller is used to receive the measurement report that user terminal sends, and sends reconfiguration message according to described measurement report to described user terminal, carries described user terminal in the described reconfiguration message and carries out the activationary time that switch the sub-district; Send Radio Link deexcitation order to the base station, carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time; Receive reshuffling of described user terminal transmission and finish message, delete the Radio Link of described cell-of-origin;
Described base station is used to receive the Radio Link deexcitation order that described radio network controller sends; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time; When arriving described activationary time, receive the upward signal that described user terminal sends to described Target cell, and send downlink data to described user terminal according to described upward signal; Stop described cell-of-origin according to the described deexcitation time simultaneously and send downlink data to described user terminal.
Described base station also is used for:
Proceeding uplink synchronous by the Radio Link of described cell-of-origin detects; When detecting uplink synchronous, recover to carry out the transmission of downlink data to described user terminal by the Radio Link of described cell-of-origin.
Compared with prior art, the present invention has the following advantages at least:
RNC sends reconfiguration message to terminal, cell-of-origin to the base station sends the Radio Link activation command, it is identical with activationary time in the reconfiguration message to carry the time of cell-of-origin deexcitation in this Radio Link activation command, thereby arrive the sub-district during switching time, guarantee that the base station can in time stop the transmission of the downlink data of cell-of-origin, interference so that the redundant data of avoiding cell-of-origin in handoff procedure produces user in the adjacent sub-district improves handover success rate.
Description of drawings
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in the present invention or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the process schematic diagram that switch the minizone in the prior art;
Fig. 2 is the schematic flow sheet of the method switched of the sub-district that provides of one embodiment of the invention;
Fig. 3 is the schematic flow sheet of the method switched of the sub-district that provides of one embodiment of the invention;
Fig. 4 is the schematic flow sheet of the method switched of the sub-district that provides in the application scenarios of the present invention;
Fig. 5 is the structural representation of the radio network controller that provides of one embodiment of the invention;
Fig. 6 is the structural representation of the base station that provides of one embodiment of the invention;
Fig. 7 is the structural representation of data transmission unit in base station shown in Figure 6;
Fig. 8 is the structural representation of the system switched of the sub-district that provides of one embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme among the present invention is clearly and completely described, obviously, the embodiments described below only are the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The core concept of the embodiment of the invention is: RNC also sends Radio Link activation command (RADIO LINK ACTIVATION COMMAND) in the cell-of-origin of base station when sending reconfiguration message to terminal.Wherein, synchronous activation indication and the activationary time of carried terminal and Target cell in the reconfiguration message, carry the Radio Link sign of cell-of-origin in the Radio Link activation command, the time of deexcitation indication and deexcitation (Deactivation CFN), the activationary time that carries in the reconfiguration message that the time of this deexcitation and RNC send to terminal is identical, can guarantee that thus the base station in time stops the transmission of the downlink data of cell-of-origin, avoid in the cell-of-origin in the handoff procedure of Target cell, because the redundant data of cell-of-origin, user in the adjacent sub-district is produced interference, improve handover success rate.
The method that embodiments of the invention provide a kind of sub-district to switch as shown in Figure 2, may further comprise the steps:
Step s201, radio network controller receives the measurement report that user terminal sends, and sends reconfiguration message according to described measurement report to described user terminal, carries described user terminal in the described reconfiguration message and carries out the activationary time that switch the sub-district;
Step s202, described radio network controller sends Radio Link deexcitation order to the base station; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time;
Step s203, described radio network controller receive reshuffling of described user terminal transmission and finish message, delete the Radio Link of described cell-of-origin.
Described radio network controller receives reshuffling of described user terminal transmission and finishes before the message, also comprises:
When arriving described activationary time, described base station receives the upward signal that described user terminal sends to Target cell, and sends downlink data according to described upward signal to described user terminal; Simultaneously
Described base station stops described cell-of-origin according to the described deexcitation time and sends downlink data to described user terminal.
Described base station stops described cell-of-origin after described user terminal sends downlink data according to the described deexcitation time, also comprises:
Described base station is proceeded uplink synchronous by the Radio Link of described cell-of-origin and is detected;
When detecting uplink synchronous, described base station recovers to carry out the transmission of downlink data to described user terminal by the Radio Link of described cell-of-origin.
Also carry the identification information that described user terminal carries out the Target cell of sub-district switching in the described reconfiguration message;
Described radio network controller carries the identification information of deexcitation indication, deexcitation time and the described cell-of-origin of described cell-of-origin in the Radio Link deexcitation order that described base station sends.
The method that embodiments of the invention also provide a kind of sub-district to switch as shown in Figure 3, may further comprise the steps:
Step s301, the base station is forwarded to user terminal with the reconfiguration message that radio network controller sends, and carries described user terminal in the described reconfiguration message and carries out the activationary time that switches the sub-district, the cell ID of Target cell;
Step s302, described base station receives the Radio Link deexcitation order that described radio network controller sends; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time;
Step s303, when arriving described activationary time, described base station receives the upward signal that described user terminal sends to described Target cell, and sends downlink data according to described upward signal to described user terminal; Stop described cell-of-origin according to the described deexcitation time simultaneously and send downlink data to described user terminal.
The method that embodiments of the invention provide also comprises:
Described base station is proceeded uplink synchronous by the Radio Link of described cell-of-origin and is detected;
When detecting uplink synchronous, described base station recovers to carry out the transmission of downlink data to described user terminal by the Radio Link of described cell-of-origin.
The method that embodiments of the invention provide also comprises:
Described base station is transmitted reshuffling of described user terminal transmission to described radio network controller and is finished message, deletes the Radio Link of described cell-of-origin.
By the method that adopts embodiments of the invention to provide, RNC sends reconfiguration message to terminal, cell-of-origin to the base station sends the Radio Link activation command, it is identical with activationary time in the reconfiguration message to carry the time of cell-of-origin deexcitation in this Radio Link activation command, thereby arrive the sub-district during switching time, guarantee that the base station can in time stop the transmission of the downlink data of cell-of-origin, to avoid in handoff procedure, because the redundant data of cell-of-origin, user in the adjacent sub-district is produced interference, improve handover success rate.
The method that switch the sub-district of introducing embodiments of the invention in detail and providing below in conjunction with concrete application scenarios as shown in Figure 4, may further comprise the steps:
After step s401, RNC received the measurement report (MEASUREMENT REPORT) of UE, decision was carried out the sub-district and is switched.
RNC periodically receives the measurement report that UE sends, the information such as identification information of carrying UE current position information, UE in this measurement report.RNC detects the measurement report that UE sends, and when testing result is the current position of UE when being in cell edge, RNC knows that this UE need carry out the sub-district and switch.RNC obtains Target cell according to the current cell information of UE, and this Target cell can be generally one group of a plurality of Target cell for single or multiple, and RNC therefrom selects the optimal target sub-district.
RNC select the optimal objective sub-district standard can for: the current position of this Target cell and UE is apart from the shortest, perhaps RNC also can be with the choice criteria of signal strength signal intensity as the optimal objective sub-district, perhaps RNC also can adopt other mode select target sub-districts, should be with not limiting in the scene.
Why select one group of Target cell, be based on the reason of handoff failure, promptly when the handoff failure of RNC sends to the base station optimal objective sub-district, RNC selects remaining optimal objective sub-district to send to the base station from this group of Target cell, carry out the sub-district and switch, guarantee the proper communication of user terminal.
Step s402, RNC sends Radio Link to the base station and sets up (RADIO LINK SETUP REQUEST) or Radio Link increase (RADIO LINK ADDITION REQUEST) message, sets up Radio Link at Target cell.
Concrete, when Target cell that RNC selects in previous step is rapid and cell-of-origin belong to same base station, stored the information of user terminal in this base station, only needed to increase a Radio Link that arrives this user terminal, RNC sends Radio Link to the base station increases message; When Target cell that RNC selects in previous step is rapid and cell-of-origin belong to different base station, do not have user's terminal information in the base station, the base station need obtain and store the information of user terminal, and RNC sends Radio Link to the base station and sets up message.Wherein, Radio Link increase message or Radio Link are set up the identification information of message carrying user terminal, the identification information of Target cell.
The base station receives the Radio Link increase message or the Radio Link of RNC transmission and sets up message, set up the Radio Link of Target cell according to the identification information of Target cell in the message, connect by the identification information of user terminal and the Radio Link and the user terminal of Target cell.
Step s403, Target cell to RNC send Radio Link set up response (RADIO LINK SETUP REPONSE) or/Radio Link increases response (RADIO LINK ADDITION RESPONSE).
The base station sends response to RNC after Target cell is set up or increased the Radio Link success, notice RNC Radio Link is set up or increased and finishes.
Step s404, RNC sends reconfiguration message to terminal.
Concrete, this reconfiguration message is specifically as follows physical channel reconfiguration message (PHYSICAL CHANNEL RECONFIGURATION), transmission channel reconfiguration message (TRANSPORT CHANNLE RECONFIGURATION) or RB reconfiguration message (RADIO BEARER RECONFIGURATION).
Resource situation before and after RNC can switch according to the sub-district selects the kind of message to send reconfiguration information to terminal.
Can carry the identification information of activationary time (Active Time), Target cell or the Radio Link identification information of Target cell in this reconfiguration message.
Step s405, RNC sends Radio Link deexcitation order (RADIO LINK ACTIVATION COMMAND) to the base station.
In order to realize synchronously at user terminal and Target cell, during downlink data that the receiving target sub-district sends, stop the transmission of cell-of-origin downlink data, when RNC needs the activationary time of informing base station in previous step is rapid, stop the transmission of cell-of-origin downlink data, therefore, RNC sends Radio Link deexcitation order to the base station.Carry the time of Radio Link sign, deexcitation indication and the deexcitation of cell-of-origin in this Radio Link deexcitation order, wherein, the Radio Link sign: sign needs the Radio Link of the cell-of-origin of deexcitation; The deexcitation indication: the Radio Link of indication this cell-of-origin of deexcitation, base station stops to send downlink data by this Radio Link; And the time of deexcitation: the base station stops the time that Radio Link by the cell-of-origin sends downlink data, and the activationary time that carries in the time of this deexcitation and the reconfiguration message of RNC to the terminal transmission is identical.
Concrete, the form of this Radio Link deexcitation order is as shown in table 1:
Table 1
RADIO?LINK?ACTIVATION?COMMAND
In the above-mentioned table 1, Node B Communication Context ID (Node B communication context sign) is the user totem information of base station; RL ID (Radio Link sign) is the Radio Link identification information of cell-of-origin, and the cell-of-origin has only a wireless links, and therefore, RL ID also can be used as the identification information of cell-of-origin; Deactivate (deexcitation information) sign need be carried out deactivating operation; Synchronised (deexcitation synchronously) and Unsynchronised (deexcitation immediately) two kinds of different deexcitation times of sign, should determine the deexcitation time according to the Deactivation CFN among the Synchronised (deexcitation synchronously) with in the scene.Can expand, under other scenes, also can adopt Unsynchronised to come deexcitation Radio Link immediately.
Step s406, when arriving activationary time, user terminal sends upward signal to Target cell, and simultaneously, the base stations control cell-of-origin stops to send downlink data.
When arriving activationary time, after the base station receives the upward signal of user terminal transmission by Target cell, send downlink data according to this upward signal to user terminal, finish with user terminal synchronously, the data interaction between base station and the user terminal realizes by Target cell then.
Simultaneously, because the activationary time that carries in the reconfiguration message is identical with the deexcitation time of cell-of-origin, therefore, when the base station receives the upward signal of user terminal transmission by Target cell, the Controlling Source sub-district stops to issue downlink data, thus the interference of avoiding the cell-of-origin issues in the process of switching data that other sub-district is caused.
Step s407, the base station is proceeded uplink synchronous by the Radio Link of cell-of-origin and is detected.
During previous step was rapid, in the deexcitation time, the base stations control cell-of-origin stopped to send downlink data, and still, this Radio Link is not directly deleted in the base station, detected but still carry out uplink synchronous by this Radio Link.When user terminal during to the Target cell handoff failure, promptly user terminal sends the upward signal failure to Target cell, the perhaps downlink data failure that sends of user terminal receiving target sub-district, and user terminal will still send upward signal to the cell-of-origin.When the base station detects uplink synchronous by the cell-of-origin, recover to carry out the transmission of downlink data by the Radio Link of cell-of-origin.After recovering between cell-of-origin and the user terminal to be connected, the data of user terminal send to RNC by the wireless link recovery of cell-of-origin, thereby have avoided the conversation loss that causes owing to handoff failure.Further, judge whether again to need to attempt carrying out by RNC to the switching of the sub-district of other sub-districts, and send Radio Link to the base station once more by RNC and set up message or Radio Link increase message, set up Radio Link and user terminal carries out alternately by the base station at new Target cell, carry out the sub-district and switch.When the handoff failure of this sub-district, user terminal sends upward signal by the Radio Link of cell-of-origin again, is sent to the base station once more by RNC further that Radio Link is set up message or Radio Link increases message, carries out next time the sub-district and switches, up to handover success.
Certainly, the final result of above-mentioned sub-district switching also may be the whole handoff failures of selectable Target cell.
Step s408, the base station detects the wireless link synchronization of Target cell and finishes, and reports wireless link recovery indication (RADIO LINK RESTORE INDICATION) to RNC.
The base station is by after the finishing synchronously of Target cell and user terminal, and what show user terminal success switches to Target cell from the cell-of-origin, and at this moment, the base station is by reporting the wireless link recovery indication, the sub-district handover success of notice RNC user terminal to RNC.
RNC also can receive reshuffling that user terminal sends and finish message, and is concrete, and user terminal can be after receiving the downlink data that Target cell issues, and sends to reshuffle to RNC and finishes message, notice RNC sub-district handover success.
Step s409, RNC receive reshuffle finish the indication of message and wireless link recovery after, the Radio Link of deletion cell-of-origin, switching is finished.
Behind the handover success of sub-district, user terminal can carry out data transmit-receive by Target cell, the upstream data that no longer needs the Radio Link reception user terminal of cell-of-origin, at this moment, the Radio Link of RNC deletion cell-of-origin, concrete, RNC can send order to the base station, the Radio Link of informing base station deletion cell-of-origin.
By the method that adopts embodiments of the invention to provide, RNC sends reconfiguration message to terminal, cell-of-origin to the base station sends the Radio Link activation command, it is identical with activationary time in the reconfiguration message to carry the time of cell-of-origin deexcitation in this Radio Link activation command, thereby arrive the sub-district during switching time, guarantee that the base station can in time stop the transmission of the downlink data of cell-of-origin, to avoid in handoff procedure, because the redundant data of cell-of-origin, user in the adjacent sub-district is produced interference, improve handover success rate.
Embodiments of the invention provide a kind of radio network controller, are applied to the sub-district and switch, and are connected with base station and user terminal, as shown in Figure 5, comprising:
Reconfiguration message transmitting element 11 is used to receive the measurement report that user terminal sends, and sends reconfiguration message according to described measurement report to described user terminal, carries described user terminal in the described reconfiguration message and carries out the activationary time that switch the sub-district;
Also carry the identification information that described user terminal carries out the Target cell of sub-district switching in the described reconfiguration message.
Reconfiguration message transmitting element 11 can periodically receive the measurement report that user terminal sends, the information such as identification information of carrying user terminal current position information, user terminal in this measurement report.Radio network controller detects the measurement report that user terminal sends, and when testing result is the current position of user terminal when being in cell edge, reconfiguration message transmitting element 11 knows that this user terminal need carry out the sub-district and switch.Reconfiguration message transmitting element 11 obtains Target cell according to the current cell information of user terminal, and this Target cell can be generally one group of a plurality of Target cell for single or multiple, and reconfiguration message transmitting element 11 is therefrom selected the optimal target sub-district.Reconfiguration message transmitting element 11 select the optimal objective sub-districts standard can for: the current position of this Target cell and user terminal is apart from the shortest, perhaps reconfiguration message transmitting element 11 also can be with the choice criteria of signal strength signal intensity as the optimal objective sub-district, perhaps reconfiguration message transmitting element 11 also can adopt other mode select target sub-districts, should be with not limiting in the scene.
Why select one group of Target cell, be based on the reason of handoff failure, promptly when the handoff failure of reconfiguration message transmitting element 11 sends to the base station optimal objective sub-district, reconfiguration message transmitting element 11 selects remainingly have most Target cell to send to the base station from this group of Target cell, carry out the sub-district and switch, guarantee the proper communication of user terminal.
Link command transmitting element 12 is used for sending Radio Link deexcitation order to the base station; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time;
Described link command transmitting element 12 also carries the identification information of deexcitation indication, deexcitation time and the described cell-of-origin of described cell-of-origin in the Radio Link deexcitation order that described base station sends.
Link circuit deleting unit 13 is used to receive reshuffling of described user terminal transmission and finishes message, deletes the Radio Link of described cell-of-origin.
By the radio network controller that adopts embodiments of the invention to provide, radio network controller sends reconfiguration message to terminal, cell-of-origin to the base station sends the Radio Link activation command, it is identical with activationary time in the reconfiguration message to carry the time of cell-of-origin deexcitation in this Radio Link activation command, thereby arrive the sub-district during switching time, guarantee that the base station can in time stop the transmission of the downlink data of cell-of-origin, to avoid in handoff procedure, because the redundant data of cell-of-origin, user in the adjacent sub-district is produced interference, improve handover success rate.
Embodiments of the invention provide a kind of base station, as shown in Figure 6, comprising:
Reconfiguration message retransmission unit 21 is used for the reconfiguration message that radio network controller sends is forwarded to user terminal, carries described user terminal in the described reconfiguration message and carries out the activationary time that switches the sub-district, the cell ID of Target cell;
Deexcitation order receiving element 22 is used to receive the Radio Link deexcitation order that described radio network controller sends; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time;
Described data transmission unit 23 also is used for:
Proceeding uplink synchronous by the Radio Link of described cell-of-origin detects; When detecting uplink synchronous, recover to carry out the transmission of downlink data to described user terminal by the Radio Link of described cell-of-origin.
In the embodiments of the invention, as shown in Figure 7, the function of described data transmission unit 23 can also be finished jointly by following unit, comprising:
Upward signal receiving element 231 when arriving described activationary time, receives the upward signal that described user terminal sends to described Target cell;
Downlink data transmitting element 232 is used for sending downlink data according to the upward signal that described upward signal receiving element 231 receives to described user terminal; Also be used for stopping described cell-of-origin and send downlink data to described user terminal according to the described deexcitation time;
Uplink synchronous detecting unit 233 is used for proceeding uplink synchronous by the Radio Link of described cell-of-origin and detects;
In the embodiments of the invention, data transmission unit 23 can be a simple function module, and the perhaps combination of a plurality of functional modules does not limit concrete form.
The system that embodiments of the invention provide a kind of sub-district to switch as shown in Figure 8, comprises radio network controller 31, base station 32 and user terminal 33, wherein
Described radio network controller 31 is used to receive the measurement report that user terminal 33 sends, and sends reconfiguration message according to described measurement report to described user terminal 33, carries described user terminal 33 in the described reconfiguration message and carries out the activationary time that switch the sub-district; Send Radio Link deexcitation order to base station 32, carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time; Receive described user terminal 33 reshuffling of transmission and finish message, delete the Radio Link of described cell-of-origin;
Described base station 32 is used to receive the Radio Link deexcitation order that described radio network controller 31 sends; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time; When arriving described activationary time, receive the upward signal that described user terminal 33 sends to described Target cell, and send downlink data to described user terminal according to described upward signal; Stop described cell-of-origin according to the described deexcitation time simultaneously and send downlink data to described user terminal.
Described base station 32 also is used for:
Proceeding uplink synchronous by the Radio Link of described cell-of-origin detects; When detecting uplink synchronous, recover to carry out the transmission of downlink data to described user terminal by the Radio Link of described cell-of-origin.
By equipment and the system that adopts embodiments of the invention to provide, radio network controller sends reconfiguration message to terminal, cell-of-origin to the base station sends the Radio Link activation command, it is identical with activationary time in the reconfiguration message to carry the time of cell-of-origin deexcitation in this Radio Link activation command, thereby arrive the sub-district during switching time, guarantee that the base station can in time stop the transmission of the downlink data of cell-of-origin, to avoid in handoff procedure, because the redundant data of cell-of-origin, user in the adjacent sub-district is produced interference, improve handover success rate.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (14)
1. the method that switch the sub-district is characterized in that, comprising:
Radio network controller receives the measurement report that user terminal sends, and sends reconfiguration message according to described measurement report to described user terminal, carries described user terminal in the described reconfiguration message and carries out the activationary time that switch the sub-district;
Described radio network controller sends Radio Link deexcitation order to the base station; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time;
Described radio network controller receives reshuffling of described user terminal transmission and finishes message, deletes the Radio Link of described cell-of-origin.
2. the method for claim 1 is characterized in that, described radio network controller receives reshuffling of described user terminal transmission and finishes before the message, also comprises:
When arriving described activationary time, described base station receives the upward signal that described user terminal sends to Target cell, and sends downlink data according to described upward signal to described user terminal; Simultaneously
Described base station stops described cell-of-origin according to the described deexcitation time and sends downlink data to described user terminal.
3. method as claimed in claim 2 is characterized in that, described base station stops described cell-of-origin after described user terminal sends downlink data according to the described deexcitation time, also comprises:
The uplink synchronous detection is carried out by the Radio Link of described cell-of-origin in described base station;
When detecting uplink synchronous, described base station recovers to carry out the transmission of downlink data to described user terminal by the Radio Link of described cell-of-origin.
4. as each described method among the claim 1-3, it is characterized in that, also carry the identification information that described user terminal carries out the Target cell of sub-district switching in the described reconfiguration message;
Described radio network controller carries the identification information of deexcitation indication, deexcitation time and the described cell-of-origin of described cell-of-origin in the Radio Link deexcitation order that described base station sends.
5. the method that switch the sub-district is characterized in that, comprising:
The base station is forwarded to user terminal with the reconfiguration message that radio network controller sends, and carries described user terminal in the described reconfiguration message and carries out the activationary time that switches the sub-district, the cell ID of Target cell;
Described base station receives the Radio Link deexcitation order that described radio network controller sends; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time;
When arriving described activationary time, described base station receives the upward signal that described user terminal sends to described Target cell, and sends downlink data according to described upward signal to described user terminal; Stop described cell-of-origin according to the described deexcitation time simultaneously and send downlink data to described user terminal.
6. method as claimed in claim 5 is characterized in that, also comprises:
Described base station is proceeded uplink synchronous by the Radio Link of described cell-of-origin and is detected;
When detecting uplink synchronous, described base station recovers to carry out the transmission of downlink data to described user terminal by the Radio Link of described cell-of-origin.
7. method as claimed in claim 6 is characterized in that, also comprises:
Described base station is transmitted reshuffling of described user terminal transmission to described radio network controller and is finished message, deletes the Radio Link of described cell-of-origin according to the link circuit deleting message that described radio network controller sends.
8. a radio network controller is applied to the sub-district and switches, and is connected with base station and user terminal, it is characterized in that, comprising:
The reconfiguration message transmitting element is used to receive the measurement report that user terminal sends, and sends reconfiguration message according to described measurement report to described user terminal, carries described user terminal in the described reconfiguration message and carries out the activationary time that switch the sub-district;
The link command transmitting element is used for sending Radio Link deexcitation order to the base station; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time;
The link circuit deleting unit is used to receive reshuffling of described user terminal transmission and finishes message, deletes the Radio Link of described cell-of-origin.
9. radio network controller as claimed in claim 8 is characterized in that, also carries the identification information that described user terminal carries out the Target cell of sub-district switching in the described reconfiguration message;
Described radio network controller carries the identification information of deexcitation indication, deexcitation time and the described cell-of-origin of described cell-of-origin in the Radio Link deexcitation order that described base station sends.
10. a base station is characterized in that, comprising:
The reconfiguration message retransmission unit is used for the reconfiguration message that radio network controller sends is forwarded to user terminal, carries described user terminal in the described reconfiguration message and carries out the activationary time that switches the sub-district, the cell ID of Target cell;
Deexcitation order receiving element is used to receive the Radio Link deexcitation order that described radio network controller sends; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time;
Data transmission unit is used for receiving the upward signal that described user terminal sends to described Target cell when arriving described activationary time, and sends downlink data according to described upward signal to described user terminal; Stop described cell-of-origin according to the described deexcitation time simultaneously and send downlink data to described user terminal.
11. base station as claimed in claim 10 is characterized in that, described data transmission unit also is used for:
Proceeding uplink synchronous by the Radio Link of described cell-of-origin detects; When detecting uplink synchronous, recover to carry out the transmission of downlink data to described user terminal by the Radio Link of described cell-of-origin.
12. base station as claimed in claim 11 is characterized in that, described reconfiguration message retransmission unit also is used for:
Transmit reshuffling of described user terminal transmission to described radio network controller and finish message, delete the Radio Link of described cell-of-origin according to the link circuit deleting message that described radio network controller sends.
13. the system that switch the sub-district is characterized in that, comprises radio network controller, base station and user terminal, wherein
Described radio network controller is used to receive the measurement report that user terminal sends, and sends reconfiguration message according to described measurement report to described user terminal, carries described user terminal in the described reconfiguration message and carries out the activationary time that switch the sub-district; Send Radio Link deexcitation order to the base station, carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time; Receive reshuffling of described user terminal transmission and finish message, delete the Radio Link of described cell-of-origin;
Described base station is used to receive the Radio Link deexcitation order that described radio network controller sends; Carry the deexcitation time of cell-of-origin in the described Radio Link deexcitation order, the activationary time that carries in described deexcitation time and the described reconfiguration message is the same time; When arriving described activationary time, receive the upward signal that described user terminal sends to described Target cell, and send downlink data to described user terminal according to described upward signal; Stop described cell-of-origin according to the described deexcitation time simultaneously and send downlink data to described user terminal.
14. system as claimed in claim 13 is characterized in that, described base station also is used for:
Proceeding uplink synchronous by the Radio Link of described cell-of-origin detects; When detecting uplink synchronous, recover to carry out the transmission of downlink data to described user terminal by the Radio Link of described cell-of-origin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100869069A CN101932042A (en) | 2009-06-18 | 2009-06-18 | Cell switching method, equipment and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100869069A CN101932042A (en) | 2009-06-18 | 2009-06-18 | Cell switching method, equipment and system |
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|---|---|
| CN101932042A true CN101932042A (en) | 2010-12-29 |
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|---|---|---|---|
| CN2009100869069A Pending CN101932042A (en) | 2009-06-18 | 2009-06-18 | Cell switching method, equipment and system |
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| CN (1) | CN101932042A (en) |
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