CN102196515B - Cell switching method, radio network controller and user equipment - Google Patents
Cell switching method, radio network controller and user equipment Download PDFInfo
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Abstract
The invention discloses a cell switching method and a radio network controller (RNC). The method comprises that: the RNC transmits a channel reconfiguration message to user equipment (UE), and transmits a radio link establishment message to a target cell; the RNC acquires information returned in the processes of switching a channel according to the channel reconfiguration message by the UE and establishing a radio link with the UE according to the radio link establishment message by the target cell; the RNC determines time at which the channel reconfiguration message becomes effective on a UE side according to the returned information to trigger the UE to start the switching to the channel of the target cell; and after the channel reconfiguration message becomes effective on the UE side, the RNC stops the data transmission of a source cell, and starts transmitting data to the target cell. By the method and the RNC, a conventional cell switching flow is optimized, the switching delay can be shortened, and the switching success rate can be increased.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of cell switching method and radio network controller and user terminal.
Background technology
In mobile communication system, RNC (Radio network controller, radio network controller) is used for distributing and control is attached thereto or the radio channel resource of related cell.Radio channel resource and UE (User Equipment, user terminal) that cell base station distributes according to RNC communicate.At RNC, according to the measurement report of user terminal to send up or other information, determine UE need to be switched to Target cell from cell-of-origin time, start to carry out community switching flow.
In order successfully to realize community, switch, while determining that need to carry out community switches, RNC sends wireless link message to UE transmitting channel reconfiguration message and to Target cell, in this channel reconfiguration message, except comprising UE, be switched to the necessary information in Target cell as the channel configuration information of Target cell, also carry activationary time point, after UE success receive channel reconfiguration message, according to the activationary time point in channel reconfiguration message, arrive after activationary time point, according to the channel configuration information of Target cell, start and downlink data receiving synchronous in Target cell.Meanwhile, after activationary time point arrives, Target cell and UE set up wireless link and communicate, and RNC starts to send to Target cell data.
In above-mentioned cell switch process, after arriving at activationary time point, RNC starts to send to Target cell data, UE starts and downlink data receiving synchronous in Target cell, but do not stop cell-of-origin, to UE, send data, therefore, may to UE, send data to Target cell and cause interference.In prior art, above-mentioned cell switching method is improved for this reason, RNC is to UE transmitting channel reconfiguration message time, also to cell-of-origin, send wireless link activation command RADIO LINK ACTIVATION COMMAND, carry deexcitation instruction and deexcitation time, the entrained deexcitation time is identical with the activationary time in channel reconfiguration message.Cell-of-origin, according to the deexcitation instruction in wireless link activation command, after deexcitation time point arrives, stops sending data to UE.
In the switching flow of visible existing community, no matter adopt which kind of mode, Target cell and UE set up wireless link and communicate, UE starts in Target cell the data that synchronous and downlink data receiving and RNC stop cell-of-origin and sends, the data that start Target cell send, be all the fixing activationary time point that arranges be to trigger the moment, the condition that guarantees community handover success necessity is that Target cell successfully receives wireless link message, UE successfully receives channel reconfiguration message, RNC is not subject to the impact of channel circumstance to cell-of-origin and Target cell transmission information, therefore successful receiving rate is high and speed is fast, but RNC is subject to the impact of channel circumstance to UE transmitting channel reconfiguration message, can cause above-mentioned cell switching method to have problem below:
1) when channel circumstance is better, the fixing activationary time point of the setting relatively excessive increase handover delay that can seem.Because when channel circumstance is better, UE can receive channel reconfiguration message very soon, and fixing activationary time point comes into force and increased handover delay.As current existing network activationary time point is set to fixing 1.2s, UE can receive reconfiguration message and come into force the soonest when channel circumstance is good in 400ms, and activationary time point is equivalent to increase handover delay 800ms for 1.2s.
2), when channel circumstance is poor, the fixing activationary time point of setting can seem relatively too small can reduce handover success rate.RNC generally adopts AM pattern (Acknowledgement Mode) to UE transmitting channel reconfiguration message, be that UE is receiving after channel reconfiguration message and can send acknowledge message to RNC, if RNC does not receive at the appointed time the channel reconfiguration message that UE returns and thinks and take defeat, channel reconfiguration message is retransmitted.Therefore, when channel circumstance is poor, if UE does not also receive reconfiguration message when fixing activationary time point arrives, in the situation that adopting arrival fixing activationary time point in cell-of-origin to stop data transmission, UE community handoff failure.With example explanation above, if RNC UE in 1.2s does not also receive reconfiguration message, because cell-of-origin data are stopped paying out, can only handoff failure.In fact, because RNC generally adopts AM pattern to UE transmitting channel reconfiguration message, after 1.2s, signaling retransmits and also has successfully possibility, and therefore UE is successfully receiving all right handover success after the channel reconfiguration message of re-transmission, visible, fixing activationary time point has affected handover success rate.
Therefore, in existing cell switching method, owing to being subject to the impact of channel circumstance, making fixing activationary time point that too small meeting is set and reduce handover success rate, conference was set increases handover delay, can not take into account handover delay and handover success rate simultaneously.Even if fixing activationary time point is set to consider the compromise of re-transmission time, if current existing network activationary time point is fixing 1.2s, but can not fundamentally address the above problem.
Summary of the invention
The invention provides a kind of cell switching method and radio network controller and user terminal, for existing community switching flow is optimized, reduce handover delay and improve handover success rate.
The invention provides a kind of cell switching method, the method comprising the steps of:
Radio network controller (RNC) is to user terminal UE transmitting channel reconfiguration message, and sends wireless link message to Target cell;
Described RNC obtains UE according to described channel reconfiguration message switching channels, and the return information in wireless link process is set up according to described wireless link message and UE in Target cell;
Described RNC, according to described return information, determines when channel reconfiguration message imitates at UE adnation;
In described channel reconfiguration message, after UE adnation effect, the data that described RNC stops cell-of-origin sending, and start to send to Target cell data;
In described channel reconfiguration message and wireless link message, carry the second activationary time indication that the fixing activationary time point of indication comes into force, also comprise:
UE receives after described channel reconfiguration message, according to described the second activationary time indication, relatively receives the very first time point and described fixing activationary time point of channel reconfiguration message;
When described very first time, point was less than or equal to described fixing activationary time point, while determining the described fixing activationary time point of arrival described in channel reconfiguration message come into force, UE starts to Target cell switching channels;
When the described very first time, point was greater than described fixing activationary time point, while determining the moment that arrives the described fixing activationary time point in the next clock cycle, described channel reconfiguration message comes into force, and UE starts to Target cell switching channels;
Described Target cell is receiving after described wireless link message, according to described the second activationary time indication, when arriving described fixing activationary time point, starts to carry out the process of setting up wireless link with UE.
The present invention also provides a kind of radio network controller, comprising:
Reconfiguration message transmitting element, for to user terminal UE transmitting channel reconfiguration message, and sends wireless link message to Target cell;
Return information acquiring unit, for obtaining UE according to described channel reconfiguration message switching channels, and the return information in wireless link process is set up according to described wireless link message and UE in Target cell;
The determining unit that comes into force, for according to described return information, determines when channel reconfiguration message imitates at UE adnation;
Data exchange unit, in described channel reconfiguration message after UE adnation effect, the data that stop cell-of-origin sending, and start to send to Target cell data;
In the described channel reconfiguration message that described reconfiguration message transmitting element sends and wireless link message, carry the second activationary time indication that the fixing activationary time point of indication comes into force;
The described determining unit that comes into force specifically comprises:
The second acknowledge message receiving element, receives for receiving described UE the acknowledge message of returning after described channel reconfiguration message;
Comparing unit, receives the second time point and the described fixing activationary time point of described acknowledge message for more described the second acknowledge message receiving element;
The second determining unit, for when described the second time point is less than or equal to described fixing activationary time point, determines that while arriving described fixing activationary time point, described channel reconfiguration message is imitated at UE adnation; When described the second time point is greater than described fixing activationary time point, while determining the moment that arrives the described fixing activationary time point in the next clock cycle, described channel reconfiguration message is imitated at UE adnation.
The present invention also provides a kind of user terminal, comprising:
Reconfiguration message receiving element, the channel reconfiguration message sending for receiving radio network controller (RNC);
Entry-into-force time determining unit, for according to described channel reconfiguration message the first activationary time indication, determines that while receiving channel reconfiguration message, described channel reconfiguration message comes into force;
Channel switch unit, for when described channel reconfiguration message comes into force to Target cell switching channels.
The present invention also provides another kind of user terminal, comprising:
Reconfiguration message receiving element, the channel reconfiguration message sending for receiving radio network controller (RNC);
Comparing unit, for according to the second activationary time indication of described channel reconfiguration message, fixes activationary time point in more described the second activationary time indication, receives the very first time point of described reconfiguration message with reconfiguration message receiving element;
Entry-into-force time determining unit, when in described very first time, point is less than or equal to described fixing activationary time point, while determining the described fixing activationary time point of arrival described in channel reconfiguration message come into force; When the described very first time, point was greater than described fixing activationary time point, while determining the moment that arrives the described fixing activationary time point in the next clock cycle, described channel reconfiguration message comes into force;
Channel switch unit, for when described channel reconfiguration message comes into force to Target cell switching channels.
Utilize cell switching method provided by the invention and radio network controller and user terminal, there is following beneficial effect: because RNC is confirming that controlling cell data after UE stresses configuration messages and comes into force switches again, reasonably optimizing existing community switching flow, when channel circumstance is better, can reduce handover delay, when channel circumstance is poor, can provide handover success rate.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention small area changing method flow chart;
Fig. 2 is while coming into force mode in the embodiment of the present invention, the method flow diagram that under AM pattern, when a kind of definite channel reconfiguration message imitates at UE adnation;
Fig. 3 is the mode that comes into force in the embodiment of the present invention or fixing activationary time point while coming into force mode, and under AM pattern or UM pattern, a kind of definite channel reconfiguration message is when at the method flow diagram of UE adnation effect;
Fig. 4 is the mode that comes into force in the embodiment of the present invention or fixing activationary time point while coming into force mode, another kind ofly under AM or UM pattern determines that channel reconfiguration message is when at the method flow diagram of UE adnation effect;
Fig. 5 is when fixing activationary time point in the embodiment of the present invention and coming into force mode, and under AM pattern, a kind of definite channel reconfiguration message is when at the method flow diagram of UE adnation effect;
Fig. 6 is radio network controller structured flowchart in the embodiment of the present invention;
Fig. 7 is the structured flowchart of a kind of user terminal in the embodiment of the present invention;
Fig. 8 is the structured flowchart of another kind of user terminal in the embodiment of the present invention.
Embodiment
Cell switching method the present invention being proposed below in conjunction with drawings and Examples and radio network controller and user terminal illustrate in greater detail.
In embodiments of the invention, cell switching method provided by the invention, as shown in Figure 1, comprises the following steps:
Step S101, radio network controller (RNC) is to user terminal UE transmitting channel reconfiguration message, and sends wireless link message to Target cell;
Send to UE channel reconfiguration message to comprise UE and be switched to the necessary information in Target cell as outside the channel configuration information of Target cell, also carry activationary time indication, UE is according to activationary time indication in the time of indication, and channel reconfiguration message triggers UE in UE adnation effect and starts to switch to Target cell.Meanwhile, send in the wireless link message of Target cell and also carry activationary time indication, according to activationary time, indication started to start to set up wireless link with UE in the time of indication in Target cell.
In the present embodiment, RNC is during to UE transmitting channel reconfiguration message, send wireless link activation command RADIO LINK ACTIVATION COMMAND no longer to the wireless link of cell-of-origin, do not adopt cell-of-origin to stop at fixing activationary time point the mode that cell-of-origin data send.
Step S102, RNC obtains UE according to described channel reconfiguration message switching channels, and return information in wireless link process is set up according to described wireless link message and UE in Target cell;
UE according in channel reconfiguration message switching channels process and Target cell according in wireless link message process, by existing switching flow, UE and/or Target cell can be to RNC return informations, and in these return informations, some can reflect when channel reconfiguration information imitates at UE adnation.
Step S103, RNC, according to described return information, determines when channel reconfiguration message triggers UE in UE adnation effect and start to Target cell switching channels;
Channel reconfiguration message triggers UE in UE adnation effect and starts to Target cell switching channels, UE side success receive channel reconfiguration message is described and starts to carry out channel to Target cell switching channels and reshuffle, by above-mentioned return information, first RNC can judge whether channel reconfiguration message enters into force in UE side, when Pending The Entry Into Force, can determine when and come into force according to activationary time indication information.
Step S104, in described channel reconfiguration message, after UE adnation effect, the data that described RNC stops cell-of-origin sending, and start to send to Target cell data.Be specially RNC and send wireless link activation command RADIO LINK ACTIVATION COMMAND to the wireless link of cell-of-origin, require cell-of-origin to stop immediately sending data to UE.
Owing to having determined when channel reconfiguration message comes into force in UE side, be UE side success receive channel reconfiguration message and start after channel switches determining after coming into force, RNC just can carry out data transmission and switch, and the data that stop cell-of-origin sending, and starts to send to Target cell data.RNC of the present invention is on switching flow basis, existing community, during to UE transmitting channel reconfiguration message, no longer to cell-of-origin, send wireless link activation command, like this when arrival activationary time point UE starts channel switching, RNC no longer stops sending to cell-of-origin data, because RNC is by determining the mode control cell-of-origin of UE side channel reconfiguration message entry-into-force time and the data exchange time of Target cell, smaller activationary time point can be set like this and reduce handover delay, in the poor situation of channel circumstance, also can improve community handover success rate.
In the present embodiment, in channel reconfiguration message and wireless link message, all carry activationary time indication, preferably adopt the activationary time indication coming into force, about the mode of activationary time indication, can arrange flexibly as required.Provide two kinds of set-up modes in the present embodiment below, certainly, the setting of activationary time indication is not limited to two kinds of modes below:
1) activationary time set-up mode one
Specifically be set to be used to indicate the first activationary time indication coming into force, while adopting which, also comprise step:
UE, when receiving described channel reconfiguration message, determines that according to the first activationary time indication channel reconfiguration message comes into force, and starts to Target cell switching channels, starts and downlink data receiving synchronous in Target cell;
Target cell, when receiving wireless link message, starts to carry out according to the first activationary time indication the process of setting up wireless link with UE immediately, and the concrete same prior art of process of establishing, no longer describes in detail here.
Because UE successfully receives after channel reconfiguration message, come into force and start and downlink data receiving synchronous in Target cell, when therefore channel circumstance is relatively good, almost there is no handover delay, poor at channel circumstance, as received, can also again receive channel reconfiguration message by re-transmission mode when unsuccessful and start to switch, also can not reduce handover success rate.
When adopting which that activationary time indication is set, preferably, as shown in Figure 2, in the present embodiment, RNC determines that described channel reconfiguration message, when in UE adnation effect, specifically comprises:
Step S1031, RNC receives UE and receives the acknowledge message of returning after described channel reconfiguration message;
While adopting AM pattern, UE receives after channel reconfiguration message, can return to acknowledge message to RNC.RNC receives the rlc layer confirmation of channel reconfiguration message, thinks that UE has received channel reconfiguration message.
Step S1032, determines that RNC received the confirmation before the message moment, and channel reconfiguration message is imitated at UE adnation.When adopting the mode of the first activationary time indication, because receiving channel reconfiguration message, UE comes into force, and therefore RNC receives the confirmation the moment of message, thinks that the channel reconfiguration message of UE side enters into force.
Above-mentioned RNC determines by confirmation of receipt message the mode that the UE channel mode of reshuffling enters into force, and is applicable to AM pattern.Under UM pattern, UE side is not returned to acknowledge message after receiving channel reconfiguration message, also provides the RNC of a kind of AM of being applicable to pattern or UM pattern to determine the mode when channel reconfiguration message imitates at UE adnation in the present embodiment, as shown in Figure 3, specifically comprises:
Step S103a, RNC receiving target community and UE set up in wireless link process, determine the wireless link reparation message of returning after wireless link uplink synchronous;
In Target cell and UE, set up in wireless link process, Target cell sends wireless link reparation Radio Link Restore message to RNC after judging wireless link uplink synchronous, now can illustrate that UE side has been switched to Target cell;
Step S103b, determines that RNC receives wireless link and repaired before the message moment, and channel reconfiguration message is imitated at UE adnation.
The RNC that also provides another kind to be applicable to AM pattern and UM pattern in the present embodiment determines the mode when channel reconfiguration message imitates at UE adnation, as shown in Figure 4, specifically comprises:
Step S103A, RNC receiving target community and UE set up in wireless link process, determine the message of having reshuffled of returning after wireless link down-going synchronous;
In Target cell and UE, set up in wireless link process, UE can send and reshuffle message after Target cell obtains down-going synchronous, Target cell passes through RNC having reshuffled message, and this message explanation has been reshuffled, and now can illustrate that UE side has been switched to Target cell.
Step S103B, determines that RNC reshuffled before the message moment described in receiving, and channel reconfiguration message is imitated at UE adnation.
Two kinds of RNC next determine when channel reconfiguration message is applicable to UM pattern in the mode of UE adnation effect, if AM pattern, mainly for following scene: UE, received channel reconfiguration message and entered into force, but having confirmed because the up link poor RNC of causing in cell-of-origin does not receive rlc layer.In the situation that RNC determines that UE side channel reconfiguration message enters into force, can start immediately to stop cell-of-origin data and start to send to Target cell data.
2) activationary time set-up mode two
Specifically be set to be used to indicate the second activationary time indication that fixing activationary time point comes into force, while adopting which, also comprise step:
UE receives after channel reconfiguration message, according to the second activationary time indication, relatively receives the very first time point of channel reconfiguration message and fixes activationary time point;
When the very first time, point was less than or equal to fixing activationary time point, determine that while arriving fixing activationary time point, channel reconfiguration message comes into force, UE starts to Target cell switching channels, in this case, illustrate that channel circumstance is good, do not arrive fixing activationary time point and just receive channel reconfiguration message, wait for while arriving fixing activationary time point, channel reconfiguration message comes into force, and UE starts to Target cell switching channels;
When the very first time, point was greater than fixing activationary time point, while determining the moment that arrives the fixing activationary time point in the next clock cycle, channel reconfiguration message comes into force, UE starts to Target cell switching channels, when channel circumstance is poor, it is to come into force a clock cycle of benchmark time delay that channel reconfiguration message comes into force to fix activationary time point, and UE starts to Target cell switching channels;
Target cell is receiving after wireless link message, according to the second activationary time, indicate when arriving fixing activationary time point, start to carry out the process of setting up wireless link with UE, for Target cell, generally do not exist time of reception point to be greater than the situation of fixing activationary time point.
While adopting which, it is smaller that fixing activationary time point can arrange, and preferably, fixing activationary time point is determined in the following way: the shortest time that is transferred to UE according to the channel parameter estimation channel reconfiguration message between RNC and UE from RNC; Determine described fixing activationary time point according to this shortest time.Therefore can, when channel circumstance is relatively good, greatly reduce handoff delay, and when channel circumstance is poor, can not affect handover success rate.
In the present embodiment, RNC determines that channel reconfiguration message, when in UE adnation effect, as shown in Figure 5, specifically comprises:
Step S1031, RNC receives UE and receives the acknowledge message of returning after described channel reconfiguration message, relatively receives the confirmation the second time point and the fixing activationary time point of message;
While adopting AM pattern, RNC receives the rlc layer confirmation of channel reconfiguration message, thinks that UE has received channel reconfiguration message, owing to adopting fixing activationary time point active mode, need to determine whether to arrive fixing activationary time.
Step S103m, when the second time point is less than or equal to fixing activationary time point, determines that while arriving fixing activationary time point, channel reconfiguration message is imitated at UE adnation;
When channel circumstance is good, also Pending The Entry Into Force of UE reconfiguration message while receiving the confirmation message, therefore, the entry-into-force time that UE stresses configuration messages is fixing activationary time point.
Step S103n, when the second time point is greater than fixing activationary time point, while determining the moment that arrives the fixing activationary time point in the next clock cycle, channel reconfiguration message is imitated at UE adnation.
When channel circumstance is poor, while receiving the confirmation message, crossed fixing activationary time point, determined that the entry-into-force time of channel reconfiguration message is for fixing activationary time point for a clock cycle of benchmark time delay.
The mode that above-mentioned RNC enters into force by the confirmation of receipt message authentication UE channel mode of reshuffling, is applicable to AM pattern.Under UM pattern, UE side is not returned to acknowledge message after receiving channel reconfiguration message, in the present embodiment, RNC can also adopt above by confirming when the UE channel mode of reshuffling comes into force the two kinds of modes that are applicable to AM and UM pattern that provide under active mode immediately, repeats no more here.
For making the Understanding Time of user's side and network side consistent, in the present embodiment, above-mentioned very first time point, the second time point and fixing activationary time point adopt Connection Frame Number CFN to represent.The scope of CFN frame number is 0～255, and unit is 10ms, and 255 is 2550ms, if A < is R, UE stresses the A that the entry-into-force time point of configuration messages is the next clock cycle.Fixing activationary time point is set to be transferred to from RNC according to the channel reconfiguration message of the channel parameter estimation between RNC and UE the shortest time of UE.
In the embodiment of the present invention, a kind of radio network controller is also provided, as shown in Figure 6, comprising:
Reconfiguration message transmitting element 601 for to user terminal UE transmitting channel reconfiguration message, sends wireless link message simultaneously to Target cell; Return information acquiring unit 602, for obtaining UE according to channel reconfiguration message switching channels, and return information in wireless link process is set up according to wireless link message and UE in Target cell; The determining unit 603 that comes into force, for according to described return information, determines when channel reconfiguration message triggers UE in UE adnation effect and start to Target cell switching channels; Data exchange unit 604, in channel reconfiguration message after UE adnation effect, the data that stop cell-of-origin sending, and start to send to Target cell data.
Preferably, in the described channel reconfiguration message that in the present embodiment, reconfiguration message transmitting element 601 sends and wireless link message, carry and be used to indicate the first activationary time indication coming into force.
The determining unit that comes into force 603 specifically comprises: the first acknowledge message receiving element, for receiving described UE, receive the acknowledge message of returning after described channel reconfiguration message; The first determining unit, imitates at UE adnation before described the first acknowledge message receiving element receives the described acknowledge message moment for definite described channel reconfiguration message.
Preferably, in the described channel reconfiguration message that in the present embodiment, reconfiguration message transmitting element sends and wireless link message, carry the second activationary time indication that the fixing activationary time point of indication comes into force.The above-mentioned determining unit 603 that comes into force specifically comprises: the second acknowledge message receiving element, for receiving described UE, receive the acknowledge message of returning after described channel reconfiguration message; Comparing unit, receives the second time point and the described fixing activationary time point of described acknowledge message for more described the second acknowledge message receiving element; The second determining unit, for when described the second time point is less than or equal to described fixing activationary time point, determines that while arriving described fixing activationary time point, described channel reconfiguration message is imitated at UE adnation; When described the second time point is greater than described fixing activationary time point, while determining the moment of the described fixing activationary time point that arrives the next clock cycle, described channel reconfiguration message is imitated at UE adnation.
Preferably, the above-mentioned determining unit 603 that comes into force specifically comprises: link repair message sink unit, for receiving described Target cell and UE, set up wireless link process, and determine the wireless link reparation message of returning after wireless link uplink synchronous; The 3rd determining unit, for determining that described channel reconfiguration message receives before described wireless link is repaired the message moment and imitates at UE adnation in described link repair message sink unit.Or the determining unit that comes into force 603 specifically comprises:
Reshuffle message sink unit, for receiving described Target cell and UE, set up wireless link process, determined the message of having reshuffled of returning after wireless link down-going synchronous; The 4th determining unit, for determining that described channel reconfiguration message imitates at UE adnation described having reshuffled before the message moment has been reshuffled described in receiving in message sink unit.
In embodiments of the invention, a kind of user terminal is also provided, as shown in Figure 7, comprising:
Reconfiguration message receiving element 701, the channel reconfiguration message sending for receiving radio network controller (RNC); Entry-into-force time determining unit 702, for according to described channel reconfiguration message the first activationary time indication, determines that while receiving channel reconfiguration message, described channel reconfiguration message comes into force; Channel switch unit 703, for when channel reconfiguration message comes into force to Target cell switching channels.Preferably, this user terminal also comprises: acknowledge message is returned to unit 704, for when described reconfiguration message receiving element receives described channel reconfiguration message, to radio network controller, returns to acknowledge message.
According to another kind of user terminal is also provided in embodiments of the invention, as shown in Figure 8, comprising: reconfiguration message receiving element 801, the channel reconfiguration message sending for receiving radio network controller (RNC); Comparing unit 802, for according to the second activationary time indication of described channel reconfiguration message, fixes activationary time point in more described the second activationary time indication, receives the very first time point of described reconfiguration message with reconfiguration message receiving element; Entry-into-force time determining unit 803, when in described very first time, point is less than or equal to described fixing activationary time point, while determining the described fixing activationary time point of arrival described in channel reconfiguration message come into force; When the described very first time, point was greater than described fixing activationary time point, while determining the moment of the described fixing activationary time point that arrives the next clock cycle, described channel reconfiguration message comes into force; Channel switch unit 804, for when described channel reconfiguration message comes into force to Target cell switching channels.Preferably, this user terminal also comprises: acknowledge message is returned to unit 805, for when described reconfiguration message receiving element receives described channel reconfiguration message, to radio network controller, returns to acknowledge message.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (11)
1. a cell switching method, is characterized in that, comprising:
Radio network controller (RNC) is to user terminal UE transmitting channel reconfiguration message, and sends wireless link message to Target cell;
Described RNC obtains UE according to described channel reconfiguration message switching channels, and the return information in wireless link process is set up according to described wireless link message and UE in Target cell;
Described RNC, according to described return information, determines when channel reconfiguration message imitates at UE adnation;
In described channel reconfiguration message, after UE adnation effect, the data that described RNC stops cell-of-origin sending, and start to send to Target cell data;
In described channel reconfiguration message and wireless link message, carry the second activationary time indication that the fixing activationary time point of indication comes into force, also comprise:
UE receives after described channel reconfiguration message, according to described the second activationary time indication, relatively receives the very first time point and described fixing activationary time point of channel reconfiguration message;
When described very first time, point was less than or equal to described fixing activationary time point, while determining the described fixing activationary time point of arrival described in channel reconfiguration message come into force, UE starts to Target cell switching channels;
When the described very first time, point was greater than described fixing activationary time point, while determining the moment that arrives the described fixing activationary time point in the next clock cycle, described channel reconfiguration message comes into force, and UE starts to Target cell switching channels;
Described Target cell is receiving after described wireless link message, according to described the second activationary time indication, when arriving described fixing activationary time point, starts to carry out the process of setting up wireless link with UE.
2. the method for claim 1, is characterized in that, described RNC determines that described channel reconfiguration message, when in UE adnation effect, specifically comprises:
Described RNC receives described UE and receives the acknowledge message of returning after described channel reconfiguration message, relatively receives the second time point and the described fixing activationary time point of described acknowledge message;
When described the second time point is less than or equal to described fixing activationary time point, determine that while arriving described fixing activationary time point, described channel reconfiguration message is imitated at UE adnation;
When described the second time point is greater than described fixing activationary time point, determine the moment that arrives the described fixing activationary time point in the next clock cycle, described channel reconfiguration message is imitated at UE adnation.
3. the method for claim 1, is characterized in that, described RNC determines that described channel reconfiguration message, when in UE adnation effect, specifically comprises:
Described RNC receives described Target cell and UE sets up in wireless link process, determines the wireless link reparation message of returning after wireless link uplink synchronous;
Determine that described RNC receives described wireless link and repaired before the message moment, described channel reconfiguration message is imitated at UE adnation.
4. the method for claim 1, is characterized in that, described RNC determines that described channel reconfiguration message, when in UE adnation effect, specifically comprises:
Described RNC receives described Target cell and UE sets up in wireless link process, determines the message of having reshuffled of returning after wireless link down-going synchronous;
Determine that described RNC reshuffled before the message moment described in receiving, described channel reconfiguration message is imitated at UE adnation.
5. method as claimed in claim 2, is characterized in that, described very first time point, the second time point and fixing activationary time point adopt Connection Frame Number CFN to represent.
6. method as claimed in claim 5, is characterized in that, described fixing activationary time point is determined by estimating the shortest time that channel reconfiguration message is transferred to UE from RNC.
7. a radio network controller, is characterized in that, comprising:
Reconfiguration message transmitting element, for to user terminal UE transmitting channel reconfiguration message, and sends wireless link message to Target cell;
Return information acquiring unit, for obtaining UE according to described channel reconfiguration message switching channels, and the return information in wireless link process is set up according to described wireless link message and UE in Target cell;
The determining unit that comes into force, for according to described return information, determines when channel reconfiguration message imitates at UE adnation;
Data exchange unit, in described channel reconfiguration message after UE adnation effect, the data that stop cell-of-origin sending, and start to send to Target cell data;
In the described channel reconfiguration message that described reconfiguration message transmitting element sends and wireless link message, carry the second activationary time indication that the fixing activationary time point of indication comes into force;
The described determining unit that comes into force specifically comprises:
The second acknowledge message receiving element, receives for receiving described UE the acknowledge message of returning after described channel reconfiguration message;
Comparing unit, receives the second time point and the described fixing activationary time point of described acknowledge message for more described the second acknowledge message receiving element;
The second determining unit, for when described the second time point is less than or equal to described fixing activationary time point, determines that while arriving described fixing activationary time point, described channel reconfiguration message is imitated at UE adnation; When described the second time point is greater than described fixing activationary time point, while determining the moment that arrives the described fixing activationary time point in the next clock cycle, described channel reconfiguration message is imitated at UE adnation.
8. radio network controller as claimed in claim 7, is characterized in that, described in the determining unit that comes into force also comprise:
Link repair message sink unit, sets up wireless link process for receiving described Target cell and UE, determines the wireless link reparation message of returning after wireless link uplink synchronous;
The 3rd determining unit, for determining that described link repair message sink unit receives described wireless link and repaired before the message moment, described channel reconfiguration message is imitated at UE adnation.
9. radio network controller as claimed in claim 7, is characterized in that, described in the determining unit that comes into force also comprise:
Reshuffle message sink unit, for receiving described Target cell and UE, set up wireless link process, determined the message of having reshuffled of returning after wireless link down-going synchronous;
The 4th determining unit, reshuffled before the message moment described in receiving for having reshuffled message sink unit described in determining, described channel reconfiguration message is imitated at UE adnation.
10. a user terminal, is characterized in that, comprising:
Reconfiguration message receiving element, the channel reconfiguration message sending for receiving radio network controller (RNC);
Comparing unit, for according to the second activationary time indication of described channel reconfiguration message, fixes activationary time point in more described the second activationary time indication, receives the very first time point of described reconfiguration message with reconfiguration message receiving element;
Entry-into-force time determining unit, when in described very first time, point is less than or equal to described fixing activationary time point, while determining the described fixing activationary time point of arrival described in channel reconfiguration message come into force; When the described very first time, point was greater than described fixing activationary time point, while determining the moment that arrives the described fixing activationary time point in the next clock cycle, described channel reconfiguration message comes into force;
Channel switch unit, for when described channel reconfiguration message comes into force to Target cell switching channels.
11. user terminals as claimed in claim 10, is characterized in that, also comprise:
Acknowledge message is returned to unit, for when described reconfiguration message receiving element receives described channel reconfiguration message, to radio network controller, returns to acknowledge message.
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| CN104159263B (en) | 2013-05-14 | 2019-01-18 | 华为技术有限公司 | Switching method, device and the wireless terminal of channel |
| CN103945544B (en) * | 2014-03-31 | 2017-06-27 | 上海华为技术有限公司 | Radio network controller, wireless communication system and channel method for reconfiguration |
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| CN101141781A (en) * | 2006-09-08 | 2008-03-12 | 大唐移动通信设备有限公司 | Inter-cell switch method in base station and data transmission device in switch process |
| CN101610556A (en) * | 2008-06-16 | 2009-12-23 | 大唐移动通信设备有限公司 | The method and apparatus that switch a kind of sub-district |
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| CN101141781A (en) * | 2006-09-08 | 2008-03-12 | 大唐移动通信设备有限公司 | Inter-cell switch method in base station and data transmission device in switch process |
| CN101610556A (en) * | 2008-06-16 | 2009-12-23 | 大唐移动通信设备有限公司 | The method and apparatus that switch a kind of sub-district |
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