CN101128039A - Hard switching method in mobile communication and wireless network controller using this method - Google Patents
Hard switching method in mobile communication and wireless network controller using this method Download PDFInfo
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- CN101128039A CN101128039A CNA2006101124242A CN200610112424A CN101128039A CN 101128039 A CN101128039 A CN 101128039A CN A2006101124242 A CNA2006101124242 A CN A2006101124242A CN 200610112424 A CN200610112424 A CN 200610112424A CN 101128039 A CN101128039 A CN 101128039A
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Abstract
The utility model discloses a hard switching method in mobile communications switching, which comprises the following steps: when the links is created between the network side and the target residential section, the relevant controlling information can be transmitted through the link to the target residential section, then switching orders are sent to a piece of corresponding user equipment UE; the UE completes the configuration of new links under switching orders, and carries out link switching immediately. The utility model also discloses a radio network controller (RNC) in the applied mobile communications. The utility model is applied to the hard switching process, in which the radio network controller (RNC) is also adopted. The utility model has the advantages of no requirement for setting activation time point , synchronous switching guarantee between UE and the network side, and the completion of hard switching operation between residential sections, and a decrease in system overhead.
Description
Technical field
The present invention relates to the 3G (Third Generation) Moblie technology, relate in particular to the method for hard switching in a kind of mobile communication and use the radio network controller (RNC, Radio Network Controller) of this method.
Background technology
In 3-G (Generation Three mobile communication system), the changing method of subscriber equipment (UE, User Equipment) between neighbor cell has three kinds, is respectively soft handover, direct-cut operation and baton handover.Soft handover can be used for Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplex) system, and baton handover can be used for time division duplex (TDD, Time Division Duplex) system, and direct-cut operation then can be used for various 3-G (Generation Three mobile communication system).
In direct-cut operation, subscriber equipment (UE, User Equipment) aloft on the interface, only can adopt a link to carry out the transmitting-receiving of data at one time, so be to guarantee that UE and network side can all switch to the up-downgoing data on the new link simultaneously, must adopt the activationary time point to come coordination network side and UE to use the time point of new link in the handoff procedure.
Because the influence of factors such as the complexity of wireless network environment and multipath interference, switching command may need the re-transmission by several times just may correctly to be received by UE, thereby just must consider many-sided factor when activationary time point is set.In the network operation of reality, because the distance of UE and base station has nothing in common with each other, former sub-district and Target cell may be also may be alien-frequency district frequently together, thereby disturb also different, thereby it is also inequality to make UE receive the success rate of switching command, it is also uncertain to cause network side to be handed down to the number of retransmissions of switching command of UE, thereby makes the setting of activationary time point become very complicated.
If activationary time point is provided with greatly, then when wireless environment is better, UE is receiving switching command and again behind the configuration link soon, needs also to wait for that the long period just can switch.Can cause handover delay to increase like this.If activationary time point is provided with for a short time, then when wireless environment was abominable, UE can not receive that switching command maybe needs just can receive switching command through repeatedly retransmitting owing to disturb.May cause UE and network side can't switch to new link synchronously like this.
And for the activationary time point is set, network side also needs the propagation delay time of UE and network is measured, so that the computing activation time point, so also can increase the expense of system.
Summary of the invention
In view of this, the technical problem that the present invention solves provides the method for hard switching in a kind of 3-G (Generation Three mobile communication system) and the radio network controller of this method of use, in direct-cut operation, radio network controller by this method and this method of use, need not to be provided with the activationary time point, also can guarantee the synchronous switching of UE and network side, finish the direct-cut operation of UE, and reduce the expense of system in the minizone.
The present invention includes:
Method for hard switching in a kind of mobile communication comprises:
After network side and Target cell are set up link, begin to transmit related control information mutually with Target cell, send switching command to corresponding user equipment UE by this link;
After described UE finishes the configuration of new link according to switching command, carry out link switchover at once.
Wherein, the activationary time point in the described switching command is set to default value.
Wherein, further comprise:
Network side will carry out switch decision according to the neighbor cell measurement value that described UE reports before setting up link with Target cell; Switch if desired, select target sub-district then, and set up link between network side and the Target cell.
Wherein, further comprise:
After network side and Target cell were set up link, if the data that send to described UE are grouped data, then network side stopped to send this data to former sub-district, and these data of buffer memory.
Wherein, further comprise:
After setting up link with Target cell, network side begins to send related data to Target cell;
Or after UE finished link switchover, network side received that beginning sent related data to Target cell when response message was finished in the switching of UE feedback.
Wherein, UE carries out link switchover by following step:
UE carries out uplink synchronisation to Target cell; After the uplink synchronisation of UE and Target cell is finished, enable the configuration of new link, switch to new link.
Wherein, further comprise:
After UE switched to new link, network side was deleted the link between this UE and the former sub-district.
Radio network controller in a kind of mobile communication comprises:
The control information transmission unit is used for after radio network controller and Target cell are set up link, begins to send switching command by this link and Target cell transmission related control information mutually to corresponding user equipment UE.
Wherein, also comprise:
The switch decision unit, the metrical information that is used for reporting according to UE is carried out switch decision, after decision is switched, the select target sub-district;
The link establishment unit is used to set up the link between radio network controller and the Target cell.
Wherein, also comprise:
The transmitting element of former cell data, be used for after radio network controller and Target cell are set up link, judge whether the data that send to corresponding UE are grouped data, if, then notify radio network controller to stop to send this data to former sub-district, and these data of buffer memory.
Wherein, also comprise:
The transmitting element of Target cell data is used for sending data to Target cell after radio network controller and Target cell are set up link; Or when response message is finished in the switching of receiving the UE feedback, send related data to Target cell.
Wherein, also comprise:
The link circuit deleting unit is used for after UE switches to new link, deletes the link between this UE and the former sub-district.
Wherein, the activationary time point in the described switching command is set to default value.
In method for hard switching of the present invention, network side just begins and relevant control information and the data of Target cell transmission after setting up link with Target cell.Like this, even without the activationary time point is set, still can guarantee UE carry out at any time link switchover and and Target cell on new link, communicate.As can be seen, adopt method of the present invention, in direct-cut operation, need not to be provided with the activationary time point, also can guarantee the synchronous switching of UE and Target cell, finish the direct-cut operation of UE, and reduced the expense of system in the minizone.
Description of drawings
Fig. 1 is the flow chart that UE carries out direct-cut operation in the prior art;
Fig. 2 is the flow chart of the inventive method embodiment;
Fig. 3 is the schematic diagram of radio network controller among the present invention.
Embodiment
At present, in 3-G (Generation Three mobile communication system), UE carries out direct-cut operation between neighbor cell method as shown in Figure 1.
In step 101, when UE was in certain sub-district, this sub-district was called former sub-district, and UE measures the neighbor cell of former sub-district, and measurement result is reported network side.
In step 102, network side with described UE measurement result that reports and the threshold value that presets relatively carries out switch decision.
In step 103, if described UE need switch, then network side is this UE select target sub-district, and sets up link with this sub-district, and Target cell and described UE are communicated the new link information notification target sub-district of being adopted.
In step 104, Target cell is configured according to the new link information of network side notice; After finishing new configuration, Target cell will be enabled new configuration immediately, and corresponding new up link is monitored.
In step 105, after the link establishment between network side and the Target cell was finished, network side sent switching command to the described UE that is in former sub-district, notifies described UE the information of new link, and the activationary time point.
In step 106, described UE at first returns confirmation to network side after receiving the switching command of network side, and the information according to new link is configured again then.
In step 107, at the activationary time point, described UE carries out synchronously to the corresponding new up link of Target cell; Simultaneously, network side sends relevant information to Target cell.
In step 108, after the uplink synchronisation of described UE and Target cell was finished, described UE enabled new configuration, switched to new link; After Target cell detects uplink synchronisation, will proceed to communicate by letter with described UE at new link.
In step 109, after described UE switches to new link, response message informing network side is finished in switching, network side will be deleted the link between itself and the former sub-district.
As can be seen, in existing direct-cut operation, UE receives switching command, and after reconfiguring, can't switch, and have only when activationary time point arrives, and just can switch.Equally, have only when activationary time point arrives, network side just sends relevant information to Target cell, and before this, even Target cell is finished new configuration and enabled new configuration, network side can not send relevant information to Target cell yet.
Core concept of the present invention is: network side and Target cell are set up behind the link and the Target cell related transmitting information, and the activationary time point is used as default; Network side sends the link switchover order to Target cell and corresponding UE, and notifies described UE with the information of activationary time point; After described UE finishes the configuration of new link according to the link switchover order, carry out link switchover at once, with Target cell on new link, adopt described relevant information to communicate.
Below, 1 pair of method of the present invention is done further and is specified in conjunction with the embodiments.
Fig. 2 is the flow chart of the inventive method, and in step 201, when UE was in former sub-district, UE measured the neighbor cell of this former sub-district, and measurement result is reported network side.
In step 202, network side with described UE measurement result that reports and the threshold value that presets relatively carries out switch decision.And select this UE will switch the Target cell that enters.
In step 203, if described UE need switch, then network side is this UE select target sub-district, and sets up link with this sub-district, and Target cell and described UE are communicated the new link information notification target sub-district of being adopted.
In step 204, Target cell is configured according to the new link information of network side notice; After finishing new configuration, Target cell will be enabled new configuration immediately, and corresponding new up link is monitored.
In step 205, after the link establishment between network side and the Target cell was finished, network side began to transmit relevant control signaling simultaneously with Target cell, former sub-district, and whether decision sends data to former sub-district and Target cell as required.
The data of Fa Songing are the data of transparent mode if desired, as: speech data and video data, then network side sends this data to former sub-district; The data of Fa Songing are grouped data if desired, and then network side can stop to send this data to the UE that is in former sub-district, and these data of buffer memory, and Target cell sends to data in buffer this UE again to treat to switch into by UE.
For Target cell, network side can be as required, and before receiving that response message is finished in switching, or when receiving that response message is finished in switching, beginning sends relevant data to Target cell.It is after UE and Target cell switch to new link synchronously that response message is finished in described switching, and UE finishes response message by Target cell to the switching of network side feedback.
In step 206, network side sends switching command to the described UE that is in former sub-district, notifies described UE the information of new link, and the activationary time point.Wherein, the value of activationary time point is default value (now), represents to receive the link switchover order and according to after newly the information of link reconfigures, carry out link switchover at once as UE.
In step 207, described UE at first returns confirmation to network side after receiving the switching command of network side, and the information according to new link is configured again then.
In step 208, after described UE is configured again according to the information of new link, carry out synchronously to the corresponding new up link of Target cell at once according to the activationary time point of network side setting.
In step 209, after the uplink synchronisation of described UE and Target cell was finished, described UE enabled new configuration, switched to new link; After Target cell detects uplink synchronisation, will proceed to communicate by letter with described UE at new link.
In step 210, after described UE switches to new link, response message informing network side is finished in switching, network side will be deleted the link between itself and the former sub-district.If network side is receiving that switching does not begin to send relevant data to Target cell before finishing corresponding message as yet, then finish in the corresponding message receiving to switch when network side, beginning sends relevant data to Target cell, to guarantee that UE can continue to communicate by letter with Target cell.
In the present invention, network side just begins and relevant control information and the data of Target cell transmission after setting up link with Target cell.Like this, even without the activationary time point is set, but network side is after setting up link with Target cell, just think that activationary time arrives, this link is available, control signaling that can be relevant with the Target cell transmission, and send relevant data to Target cell as required.Like this, can guarantee UE carry out at any time link switchover and and Target cell on new link, communicate.As can be seen, adopt method of the present invention, in direct-cut operation, need not to be provided with the activationary time point, also can guarantee the synchronous switching of UE and Target cell, finish the direct-cut operation of UE, and reduced the expense of system in the minizone.
Based on said method, the present invention also provides the radio network controller in a kind of 3-G (Generation Three mobile communication system).Below, this radio network controller is done further specifying in conjunction with the embodiments.
Fig. 3 is the schematic diagram of this radio network controller, and this radio network controller comprises: the transmitting element 304 of switch decision unit 301, link establishment unit 302, control information transmission unit 303, former cell data, the transmitting element 305 of Target cell data and link circuit deleting unit 306.
When UE was in former sub-district, UE measured the neighbor cell of this former sub-district, and measurement result is reported radio network controller.In radio network controller, by switch decision unit 301 relatively, carry out switch decision with described UE measurement result that reports and the threshold value that presets, switch if desired, then the select target sub-district.Switch decision unit 301 is that the link between radio network controller and this Target cell will be set up in link establishment unit 302 after described UE has selected Target cell.Radio network controller is after setting up link with Target cell, Target cell and described UE are communicated the new link information notification target sub-district of being adopted, and by control information transmission unit 303 beginning and the relevant control signaling of Target cell transmission on the link of link establishment unit 302 foundation.Can also send switching command to the corresponding UE that is in former sub-district by control information transmission unit 303, the activationary time point in the switching command is set to tolerant value n ow.Target cell is configured according to the new link information of radio network controller notice; After finishing new configuration, Target cell will be enabled new configuration immediately, and corresponding new up link is monitored.Radio network controller is after setting up link with Target cell, can judge whether the data that send to corresponding UE are grouped data by the transmitting element 304 of former cell data, if, then notify radio network controller to stop to send this data to former sub-district, and these data of buffer memory; Can also send related data to Target cell by transmitting element 305 beginnings of Target cell data.Radio network controller if do not begin to send related data to Target cell, then can beginning send related data to Target cell after the affirmation information of receiving the UE feedback after setting up link with Target cell.Radio network controller sends switching command to the described UE that is in former sub-district after setting up link with Target cell, notify described UE the information of new link, and the activationary time point.Described UE at first returns confirmation to network side after receiving the switching command of network side, the information according to new link is configured again then.After setting up link with Target cell, if radio network controller does not begin to send related data to Target cell, then after the affirmation information of receiving the UE feedback, radio network controller sends related data by transmitting element 305 beginnings of Target cell data to Target cell.After described UE is configured again according to the information of new link, carry out corresponding new uplink synchronisation to Target cell at once according to activationary time point.After the uplink synchronisation of described UE and Target cell was finished, described UE enabled new configuration, switched to new link; After Target cell detects uplink synchronisation, will proceed to communicate by letter with described UE at new link.After described UE switches to new link, the message informing radio network controller that switching is finished will be deleted link between described UE and the former sub-district by link circuit deleting unit 306 radio network controllers.
Above-described embodiment only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. the method for hard switching in the mobile communication is characterized in that, comprising:
After network side and Target cell are set up link, begin to transmit related control information mutually with Target cell, send switching command to corresponding user equipment UE by this link;
After described UE finishes the configuration of new link according to switching command, carry out link switchover at once.
2. method according to claim 1 is characterized in that, the activationary time point in the described switching command is set to default value.
3. method according to claim 1 is characterized in that, further comprises:
Network side will carry out switch decision according to the neighbor cell measurement value that described UE reports before setting up link with Target cell; Switch if desired, select target sub-district then, and set up link between network side and the Target cell.
4. method according to claim 1 is characterized in that, further comprises:
After network side and Target cell were set up link, if the data that send to described UE are grouped data, then network side stopped to send this data to former sub-district, and these data of buffer memory.
5. method according to claim 1 is characterized in that, further comprises:
After setting up link with Target cell, network side begins to send related data to Target cell;
Or after UE finished link switchover, network side received that beginning sent related data to Target cell when response message was finished in the switching of UE feedback.
6. method according to claim 1 is characterized in that, UE carries out link switchover by following step:
UE carries out uplink synchronisation to Target cell; After the uplink synchronisation of UE and Target cell is finished, enable the configuration of new link, switch to new link.
7. method according to claim 1 is characterized in that, further comprises:
After UE switched to new link, network side was deleted the link between this UE and the former sub-district.
8. the radio network controller in the mobile communication is characterized in that, comprising:
The control information transmission unit is used for after radio network controller and Target cell are set up link, begins to send switching command by this link and Target cell transmission related control information mutually to corresponding user equipment UE.
9. radio network controller according to claim 8 is characterized in that, also comprises:
The switch decision unit, the metrical information that is used for reporting according to UE is carried out switch decision, after decision is switched, the select target sub-district;
The link establishment unit is used to set up the link between radio network controller and the Target cell.
10. radio network controller according to claim 8 is characterized in that, also comprises:
The transmitting element of former cell data, be used for after radio network controller and Target cell are set up link, judge whether the data that send to corresponding UE are grouped data, if, then notify radio network controller to stop to send this data to former sub-district, and these data of buffer memory.
11. radio network controller according to claim 8 is characterized in that, also comprises:
The transmitting element of Target cell data is used for sending data to Target cell after radio network controller and Target cell are set up link; Or when response message is finished in the switching of receiving the UE feedback, send related data to Target cell.
12. radio network controller according to claim 8 is characterized in that, also comprises:
The link circuit deleting unit is used for after UE switches to new link, deletes the link between this UE and the former sub-district.
13. method according to claim 8 is characterized in that, the activationary time point in the described switching command is set to default value.
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| CNA2006101124242A CN101128039A (en) | 2006-08-16 | 2006-08-16 | Hard switching method in mobile communication and wireless network controller using this method |
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| CNA2006101124242A CN101128039A (en) | 2006-08-16 | 2006-08-16 | Hard switching method in mobile communication and wireless network controller using this method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010121429A1 (en) * | 2009-04-23 | 2010-10-28 | 华为技术有限公司 | Method for indicating switching of service cells, method and apparatus for switching service cells |
| CN102238655A (en) * | 2010-04-22 | 2011-11-09 | 大唐移动通信设备有限公司 | Hard handover method for user equipment (UE), hard handover indication method, UE and radio network controller (RNC) |
| CN102413527A (en) * | 2010-09-25 | 2012-04-11 | 中兴通讯股份有限公司 | Wireless link reconfiguration method, system and network equipment |
| WO2014153783A1 (en) * | 2013-03-29 | 2014-10-02 | 华为技术有限公司 | Cell switching method, device and system for user equipment |
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2006
- 2006-08-16 CN CNA2006101124242A patent/CN101128039A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010121429A1 (en) * | 2009-04-23 | 2010-10-28 | 华为技术有限公司 | Method for indicating switching of service cells, method and apparatus for switching service cells |
| CN102100104A (en) * | 2009-04-23 | 2011-06-15 | 华为技术有限公司 | Method for indicating switching of service cells, method and apparatus for switching service cells |
| CN102100104B (en) * | 2009-04-23 | 2013-02-27 | 华为技术有限公司 | Method for indicating switching of service cells, method and apparatus for switching service cells |
| CN102238655A (en) * | 2010-04-22 | 2011-11-09 | 大唐移动通信设备有限公司 | Hard handover method for user equipment (UE), hard handover indication method, UE and radio network controller (RNC) |
| CN102238655B (en) * | 2010-04-22 | 2014-06-04 | 大唐移动通信设备有限公司 | Hard handover method for user equipment (UE), hard handover indication method, UE and radio network controller (RNC) |
| CN102413527A (en) * | 2010-09-25 | 2012-04-11 | 中兴通讯股份有限公司 | Wireless link reconfiguration method, system and network equipment |
| CN102413527B (en) * | 2010-09-25 | 2015-04-01 | 中兴通讯股份有限公司 | Wireless link reconfiguration method, system and network equipment |
| WO2014153783A1 (en) * | 2013-03-29 | 2014-10-02 | 华为技术有限公司 | Cell switching method, device and system for user equipment |
| CN104247502A (en) * | 2013-03-29 | 2014-12-24 | 华为技术有限公司 | Cell switching method, device and system for user equipment |
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