CN103024837B - A kind of method and device for reducing medium surface time delay caused by switching - Google Patents
A kind of method and device for reducing medium surface time delay caused by switching Download PDFInfo
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- CN103024837B CN103024837B CN201110285324.0A CN201110285324A CN103024837B CN 103024837 B CN103024837 B CN 103024837B CN 201110285324 A CN201110285324 A CN 201110285324A CN 103024837 B CN103024837 B CN 103024837B
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Abstract
The invention discloses a kind of method for reducing medium surface time delay caused by switching, this method includes：The dispatching priority of non-GBR Deta bearer of eating dishes without rice or wine corresponding to the downstream media face data that Target cell caches in handoff procedure is improved, and sets the available frame count of the dispatching priority after improving；ENB is scheduled using new dispatching priority to the downstream media face data of the caching, recovers the former dispatching priority of Deta bearer of eating dishes without rice or wine after the completion of scheduling.By means of technical scheme, after the completion of ensure that switching, the medium surface data of caching can be dispatched as early as possible, so as to reduce medium surface transmission data delay.The invention also discloses a kind of device for reducing medium surface time delay caused by switching, including priority adjusting module, data distributing module and dispatching priority recovery module.
Description
Technical field
The present invention relates to field of mobile communication, and more particularly to one kind, in LTE, (Long Term Evolution, are drilled for a long time
Enter) reduce the method and device of medium surface data transmission delay caused by HO (Hand Over, switching) in system.
Background technology
In LTE system, UE (User Equipment, user equipment) is moved under another cell from a cell
When, it may occur that HO, in handoff procedure, UE can first leave former cell, and interrupt all data transfers, then enter with new cell
Row synchronization, and connection is re-established, just it can continue data transfer in new cell afterwards.Therefore, HO mistakes
Cheng Zhong, medium surface data transfer can be caused time delay occur, influence is brought on customer perception, medium surface data pass during in order to reduce HO
Defeated time delay, typically with the following method：
In former cell buffered media face data, the carrying between former cell and Target cell (i.e. new cell), which is established, to be completed
Afterwards, then from former cell forwarding media face data to Target cell, and then packet loss and medium surface propagation delay time are reduced.
Medium surface data transmission delay when the above method can reduce HO to a certain extent, but there is a problem in that：
Due to switching, Target cell, which has cached, is largely sent to the descending of the user to switch i.e. UE (HO)
Medium surface data, and after finishing switching, to be much sent to other users not switched due to also having in Target cell
That is UE (NO_HO) data, the dispatching priority of these data could possibly be higher than or the tune equal to the data for being sent to UE (HO)
Priority is spent, according to dispatching algorithm (priority high obtain priority scheduling, the carry out equity dispatching of same priority), can be caused
These buffered data for being sent to UE (HO) cannot slowly dispatch, and then when causing the medium surface data transfer to have larger
Prolong.
Thus it is necessary to seek a solution, overcomes problem present in the above method.
The content of the invention
The present invention provides a kind of method and device for reducing medium surface time delay caused by switching, to solve in the prior art
The problem of medium surface data transmission delay is larger caused by switching.
The present invention provides a kind of method for reducing medium surface time delay caused by switching, including：
Improve non-GBR (Guaranteed corresponding to the downstream media face data that Target cell caches in handoff procedure
Bit Rate, ensure bit rate) Deta bearer of eating dishes without rice or wine dispatching priority；
After the Deta bearer of eating dishes without rice or wine is established, the downstream media face data of the caching are passed through into the Deta bearer of eating dishes without rice or wine
It is issued to the user to switch.That is eNB (eNodeB, the node B in evolution) is using new dispatching priority to the caching
Downstream media face data be scheduled.
Further, the dispatching priority refer to the Deta bearer of eating dishes without rice or wine QOS (Quality of service,
Service quality) priority or the Deta bearer of eating dishes without rice or wine transmission rate size.
Further, eated dishes without rice or wine described in raising the dispatching priority of Deta bearer, the method for use includes：
The peak of the dispatching priority of other non-GBR carryings in Target cell is determined, makes the Deta bearer of eating dishes without rice or wine
Dispatching priority is more than or equal to the peak.
Further, the method for medium surface time delay also includes caused by present invention reduction switching：
After the downstream media face data of the caching are all issued to the user to switch, the data of eating dishes without rice or wine are held
The dispatching priority of load returns to former priority, and former priority refers to downstream media face data corresponding sky in former cell
The dispatching priority of mouth Deta bearer.
Further, the method for medium surface time delay also includes caused by present invention reduction switching：Scheduling after setting raising
The available frame count of priority, when the scheduling frame number of descending medium surface data has reached the available frame count, even if under caching
Row medium surface data are not issued to the user to switch all, and the dispatching priority of the Deta bearer that also makes to eat dishes without rice or wine returns to former excellent
First level.
Present invention also offers a kind of device for reducing medium surface time delay caused by switching, including：
Priority adjusting module, corresponding to the downstream media face data cached for improving Target cell in handoff procedure
The dispatching priority of non-GBR Deta bearer of eating dishes without rice or wine；
Data distributing module, for it is described eat dishes without rice or wine Deta bearer establish after, by the downstream media face data of the caching
The user to switch is issued to by the Deta bearer of eating dishes without rice or wine.
Further, the dispatching priority refers to the QOS priority of the Deta bearer of eating dishes without rice or wine or the data of eating dishes without rice or wine
The transmission rate size of carrying.
Further, the priority adjusting module includes other loading priority determination sub-modules and empty port load-supporting is preferential
Level improves submodule；Wherein, other loading priority determination sub-modules are used to determine other non-GBR carryings in Target cell
Dispatching priority peak；The empty port load-supporting priority improves the scheduling that submodule is used to make the Deta bearer of eating dishes without rice or wine
Priority is more than or equal to the peak.
Further, the device of medium surface time delay also includes dispatching priority level restoration mould caused by present invention reduction switching
Block；The dispatching priority recovery module is used for when the downstream media face data of the caching are all issued to the use to switch
Behind family, the dispatching priority of the Deta bearer of eating dishes without rice or wine is returned into former priority, former priority refers to the downstream media face
The dispatching priority of data corresponding Deta bearer of eating dishes without rice or wine in former cell.
Further, the priority adjusting module is additionally operable to the available frame count of the dispatching priority after setting improves.
The present invention has the beneficial effect that：
Using technical solution of the present invention, the descending matchmaker sent for the former cell that Target cell caches in handoff procedure
Honorable data, priority scheduling is carried out after the completion of Deta bearer of eating dishes without rice or wine is rebuild, after the completion of ensure that switching, the medium surface number of caching
According to that can be dispatched as early as possible, so as to reduce medium surface transmission data delay.
The present invention program, which also has, to be easy to implement, low cost and other advantages.
Brief description of the drawings
Fig. 1 is that the present invention of a specific embodiment reduces the flow signal of the method for medium surface time delay caused by switching
Figure；
Fig. 2 is that the present invention of a specific embodiment reduces the structural representation of the device of medium surface time delay caused by switching
Figure；
Fig. 3 is priority adjusting module structural representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention will be described in further detail.It is it should be appreciated that described herein
Specific embodiment only to explain the present invention, not limit the present invention.
Embodiment of the method
According to an embodiment of the invention, there is provided a kind of method for reducing medium surface time delay caused by switching, Fig. 1 is this hair
The flow chart of the method for medium surface time delay caused by the reduction switching of bright embodiment, as shown in figure 1, according to embodiments of the present invention
Reduce the method for medium surface time delay caused by switching, including following processing：
Step 101, UE is switched to Target cell (i.e. Target cell) from former cell, and Target cell is under in handoff procedure
Row medium surface data are cached；
Step 102, if being GBR carryings corresponding to data cached, dispatching priority is not adjusted, terminates stream
Journey；If being non-GBR carryings corresponding to data cached, step 103 is performed；
In the embodiment of the present invention, dispatching priority can be the QOS priority of Deta bearer of eating dishes without rice or wine, or eat dishes without rice or wine to count
Can also be both combinations, it is of course also possible to be other scheduling priority parameters according to the transmission rate size of carrying；
Step 103, other non-GBR carryings all in cell are traveled through, obtain highest scheduling priority M therein；
Step 104, the dispatching priority of data cached corresponding Deta bearer of eating dishes without rice or wine is set to be greater than M；
Step 105, the available frame count N, N for setting the priority are natural number；
Step 106, UE and Target cell Deta bearer of completing to eat dishes without rice or wine re-establish；
Step 107, eNB is scheduled using new dispatching priority to the media data of caching；
Step 108, judge it is data cached whether dispatched, if so, then perform step 110, otherwise perform step 109；
Step 109, judge whether to complete the scheduling of N frames, if so, then performing step 110, otherwise return to step 107；
Step 110, recover the dispatching priority of Deta bearer of being eated dishes without rice or wine corresponding to buffered data, i.e., return to down priority
The dispatching priority of row medium surface data corresponding Deta bearer of eating dishes without rice or wine in former cell, flow terminate.
Device embodiment
According to an embodiment of the invention, there is provided a kind of device for reducing medium surface time delay caused by switching, Fig. 2 is this hair
The structural representation of the device of medium surface time delay caused by the reduction switching of bright embodiment, as shown in Fig. 2 the embodiment of the present invention
Reducing the device of medium surface time delay caused by switching includes priority adjusting module 201, data distributing module 202 and dispatching priority
Level restoration module 203.The modules of the embodiment of the present invention are described in detail below.
Specifically, priority adjusting module 201, the downstream media face cached for improving Target cell in handoff procedure
The valid frame of dispatching priority after the dispatching priority of the Deta bearer of eating dishes without rice or wine of non-GBR corresponding to data, and setting raising
Number.
In the embodiment of the present invention, dispatching priority can be the QOS priority of Deta bearer of eating dishes without rice or wine, or eat dishes without rice or wine to count
Can also be both combinations, it is of course also possible to be other scheduling priority parameters according to the transmission rate size of carrying.
As shown in figure 3, priority adjusting module 201 includes：Other loading priority determination sub-modules 2011 and eat dishes without rice or wine to hold
Carry priority and improve submodule 2012；Wherein, other loading priority determination sub-modules 2011 are used to determine its in Target cell
The peak M of the dispatching priority of its non-GBR carrying；Empty port load-supporting priority improves the data that are used to making to eat dishes without rice or wine of submodule 2012 and held
The dispatching priority of load is more than or equal to peak M.
Data distributing module 202, for after Deta bearer of eating dishes without rice or wine is established, the downstream media face data of caching to be passed through into sky
Mouth Deta bearer is issued to the user to switch.
Dispatching priority recovery module 203, for being all issued to what is switched when the downstream media face data of caching
After user, the dispatching priority for Deta bearer of eating dishes without rice or wine is returned into former priority.Former priority refers to that downstream media face data exist
The dispatching priority of corresponding Deta bearer of eating dishes without rice or wine in former cell.Because priority adjusting module 201 sets the tune after improving
The available frame count of priority is spent, thus dispatching priority recovery module 203 is additionally operable to the scheduling frame number when descending medium surface data
When having reached the available frame count of setting, even if the downstream media face data of caching are not issued to the user to switch all,
Make the to eat dishes without rice or wine dispatching priority of Deta bearer returns to former priority.
Although being example purpose, the preferred embodiments of the present invention are had been disclosed for, those skilled in the art will recognize
Various improvement, increase and substitution are also possible, and therefore, the scope of the present invention should be not limited to above-described embodiment, of the invention
Protection domain should be defined by the record of claims.
Claims (8)
- A kind of 1. method for reducing medium surface time delay caused by switching, it is characterised in that including：Non-guaranteed bit rate corresponding to improving the downstream media face data that are cached in handoff procedure of Target cell is eated dishes without rice or wine data The dispatching priority of carrying, and it is corresponding ensure bit rate eat dishes without rice or wine Deta bearer dispatching priority then without adjustment；After the Deta bearer of eating dishes without rice or wine is established, the downstream media face data of the caching are issued by the Deta bearer of eating dishes without rice or wine To the user to switch；Wherein,Non-guaranteed bit rate corresponding to the downstream media face data for improving Target cell and being cached in handoff procedure is eated dishes without rice or wine The method of the dispatching priority of Deta bearer includes：The peak of the dispatching priority of the carrying of other non-guaranteed bit rates in Target cell is determined, makes the data of eating dishes without rice or wine The dispatching priority of carrying is more than or equal to the peak.
- 2. the method as claimed in claim 1 for reducing medium surface time delay caused by switching, it is characterised in that the dispatching priority Level refers to eat dishes without rice or wine the service quality QOS priority of Deta bearer or the transmission rate size of the Deta bearer of eating dishes without rice or wine.
- 3. the method as claimed in claim 1 for reducing medium surface time delay caused by switching, it is characterised in that also include：After the downstream media face data of the caching are all issued to the user to switch, by the Deta bearer of eating dishes without rice or wine Dispatching priority returns to former priority；The former priority refers to downstream media face data corresponding sky in former cell The dispatching priority of mouth Deta bearer.
- 4. reduce the method for medium surface time delay caused by switching as claimed any one in claims 1 to 3, it is characterised in that Also include：The available frame count of dispatching priority after setting raising, when the scheduling frame number of descending medium surface data has reached described During available frame count, the dispatching priority of the Deta bearer of eating dishes without rice or wine is set to return to former priority.
- A kind of 5. device for reducing medium surface time delay caused by switching, it is characterised in that including：Priority adjusting module, non-guarantor corresponding to the downstream media face data cached for improving Target cell in handoff procedure Card bit rate is eated dishes without rice or wine the dispatching priority of Deta bearer, and corresponding ensures that bit rate is eated dishes without rice or wine the dispatching priority of Deta bearer Level is then without adjustment；Data distributing module, for after the Deta bearer of eating dishes without rice or wine is established, the downstream media face data of the caching to be passed through The Deta bearer of eating dishes without rice or wine is issued to the user to switch；Wherein,The priority adjusting module includes other loading priority determination sub-modules and empty port load-supporting priority improves submodule； Other loading priority determination sub-modules are used for the scheduling for determining the carrying of other non-guaranteed bit rates in Target cell The peak of priority；The empty port load-supporting priority improves the dispatching priority that submodule is used to make the Deta bearer of eating dishes without rice or wine More than or equal to the peak.
- 6. the device as claimed in claim 5 for reducing medium surface time delay caused by switching, it is characterised in that the dispatching priority Level refers to eat dishes without rice or wine the QOS priority of Deta bearer or the transmission rate size of the Deta bearer of eating dishes without rice or wine.
- 7. the device as claimed in claim 5 for reducing medium surface time delay caused by switching, it is characterised in that it is excellent also to include scheduling First level restoration module；The dispatching priority recovery module is used for when the downstream media face data of the caching are all issued to what is switched After user, the dispatching priority of the Deta bearer of eating dishes without rice or wine is returned into former priority；The former priority refers to described descending The dispatching priority of medium surface data corresponding Deta bearer of eating dishes without rice or wine in former cell.
- 8. the device of medium surface time delay caused by the reduction switching as any one of claim 5 to 7, it is characterised in that The priority adjusting module is additionally operable to the available frame count of the dispatching priority after setting improves, when the tune of descending medium surface data When degree frame number has reached the available frame count, the dispatching priority of the Deta bearer of eating dishes without rice or wine is set to return to former priority.
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| CN201110285324.0A CN103024837B (en) | 2011-09-23 | 2011-09-23 | A kind of method and device for reducing medium surface time delay caused by switching |
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| CN105813215B (en) * | 2014-12-31 | 2019-05-10 | 上海诺基亚贝尔股份有限公司 | A kind of method and apparatus that carrying scheduling is carried out based on QCI |
| CN108419268B (en) * | 2017-02-09 | 2020-10-16 | 中国移动通信有限公司研究院 | Virtual reality service processing method and wireless access network element equipment |
| CN113691827A (en) * | 2021-08-26 | 2021-11-23 | 维沃移动通信有限公司 | Media stream transmission method and device |
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| CN1695399A (en) * | 2003-02-18 | 2005-11-09 | 富士通株式会社 | Radio base station and mobile communication system |
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| JP2007096819A (en) * | 2005-09-29 | 2007-04-12 | Fujitsu Ltd | Hsdpa radio communication system |
| JP4821471B2 (en) * | 2006-07-12 | 2011-11-24 | 日本電気株式会社 | Mobile communication system, base station, mobile station and program |
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