CN103458510B - A kind of method of adjustment System operating frequency, system and base station - Google Patents
A kind of method of adjustment System operating frequency, system and base station Download PDFInfo
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- CN103458510B CN103458510B CN201210170100.XA CN201210170100A CN103458510B CN 103458510 B CN103458510 B CN 103458510B CN 201210170100 A CN201210170100 A CN 201210170100A CN 103458510 B CN103458510 B CN 103458510B
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Abstract
The application relates to a kind of method of adjustment System operating frequency, system and base station.According to the method, base station is determined to need adjustment System operating frequency; The operating frequency of data field is adjusted to new operating frequency by base station; And the operating frequency of control domain is adjusted to new operating frequency by base station and user equipment (UE).According to this method and system, in the adjustment process of operating frequency, the communication between user equipment (UE) and base station can not be interrupted.Like this, the frequency that TD-LTE can be made to take can adapt to the change of idle frequence in time, and the QoS of survice avoiding handover scheme to cause declines.
Description
Technical field
The application relates to a kind of method of adjustment System operating frequency, system and base station.
Background technology
In the scene of TD-LTE and authoring system shared frequencies, TD-LTE utilizes the idle frequency range of cognitive radio power technology use authority system.When authoring system changes spectrum occupancy state, the spendable continuous idle frequency range of TD-LTE will change.When idle frequence resource changes, TD-LTE need change bandwidth of operation and center frequency point.But by current agreement, TD-LTE can only be restarted by base station ENB and changed bandwidth of operation and center frequency point.Base ENB restarts the business that can stop all UE, causes service disconnection.Under dynamic spectrum shares scene, authoring system may change at any time, adopts ENB to restart and can bring very large impact to systematic function, network service quality.
Application number is that the Chinese patent application of CN201010123001.7 discloses a kind of frequency switching method and equipment, base station and user equipment (UE) can be switched in new centre frequency, change bandwidth of operation simultaneously.But this application needs to stop communicating of certain hour between base station with UE.Especially, when not carrying out Stochastic accessing optimization, a large amount of UE may be caused to compete random access resource due to switching flow, even cause UE service disconnection.
Summary of the invention
The object of the application is to provide a kind of a kind of frequency switching method and the system that at least partly can improve above-mentioned defect of the prior art.
According to an aspect of the application, provide a kind of method of adjustment System operating frequency, comprising: base station is determined to need adjustment System operating frequency; The operating frequency of data field is adjusted to new operating frequency by base station, makes subscriber equipment be operated in idle frequency range; And the operating frequency of control domain is adjusted to described new operating frequency by base station and user equipment (UE).
According to an aspect of the application, provide a kind of system of adjustment System operating frequency, comprise base station and user equipment (UE), wherein: described base station is determined to need adjustment System operating frequency; The operating frequency of data field is adjusted to new operating frequency by described base station, makes subscriber equipment be operated in idle frequency range; The operating frequency of control domain is adjusted to described new operating frequency by described base station and user equipment (UE).
According to an aspect of the application, provide a kind of base station, comprising: determination module, determine to need adjustment System operating frequency; And adjusting module, the operating frequency of data field is adjusted to new operating frequency, makes subscriber equipment be operated in idle frequency range, and together with user equipment (UE), the operating frequency of control domain is adjusted to described new operating frequency.
According to the method for the application, system and base station, in the adjustment process of operating frequency, the communication between user equipment (UE) and base station can not be interrupted.
Accompanying drawing explanation
Fig. 1 shows the flow chart of the method for the adjustment System operating frequency according to a kind of execution mode of the application.
Fig. 2 shows the block diagram of the system of the adjustment System operating frequency according to a kind of execution mode of the application.
Fig. 3 a-3d shows the channel seizure condition figure according to a kind of execution mode of the application.
Fig. 4 shows the flow chart of the method for the adjustment System operating frequency according to a kind of execution mode of the application.
Fig. 5 shows the base station according to a kind of execution mode of the application.
Embodiment
In order to understand the application better, make more detailed description with reference to accompanying drawing by the various aspects of the application.Be appreciated that the description of described drawings and detailed description just to the application's preferred embodiment, but not limit the scope of the application by any way.
A kind of method of adjustment System operating frequency is disclosed in the application.As shown in Figure 1, the method comprises: in a step 101, and base station is determined to need adjustment System operating frequency.In a step 102, the operating frequency of data field is adjusted to new operating frequency by base station.In step 103, the operating frequency of control domain is adjusted to new operating frequency by base station and user equipment (UE).According to this method, in the adjustment process of operating frequency, the communication between user equipment (UE) and base station can not be interrupted.
A kind of system of adjustment System operating frequency is also disclosed in the application.As shown in Figure 2, this system comprises base station 200 and user equipment (UE) 300.Base station 200 is determined to need adjustment System operating frequency.The operating frequency of data field is adjusted to new operating frequency by base station 200.The operating frequency of control domain is adjusted to new operating frequency by base station 200 and user equipment (UE) 300.According to native system, in the adjustment process of operating frequency, the communication between user equipment (UE) and base station can not be interrupted.Like this, the frequency that TD-LTE can be made to take can adapt to the change of idle frequence in time, and the QoS of survice avoiding handover scheme to cause declines.
According to a kind of execution mode of the application, when authoring system needs to change spectrum occupancy state, can judgement make subscriber equipment be operated in idle frequency range by reducing or expanding operating frequency range by base station 200.If do not make subscriber equipment be operated in idle frequency range by reducing or expanding operating frequency range, then base station 200 is determined to perform adjustment.Now can perform cell merge flow process.If make subscriber equipment be operated in idle frequency range by reducing or expanding operating frequency range, then base station 200 is determined currently to need adjustment System operating frequency.
In the scene of TD-LTE and authoring system shared frequencies, TD-LTE utilizes cognitive radio power technology can the idle frequence of use authority system.When authoring system needs to change spectrum occupancy state, the spendable continuous idle frequence of TD-LTE will change.According to a kind of embodiment, as shown in Figure 3 a, when three continuous broadcasting channels are idle, TD-LTE can use continuous print 24MHz, bandwidth of operation can be 20MHz, after authoring system increase takies a channel, as shown in Figure 3 b, TD-LTE can only use continuous 16MHz, and bandwidth of operation mostly is 15MHz most.According to a kind of embodiment, as shown in Figure 3 c, when two continuous broadcasting channels of system are idle, TD-LTE can use continuous 16MHz, and bandwidth of operation is 15MHz.After authoring system discharges a channel, as shown in Figure 3 d, TD-LTE can use continuous print 24MHz, and bandwidth of operation can be 20MHz.Therefore, when authoring system needs to change spectrum occupancy state, can judgement make user equipment (UE) 300 be operated in idle frequency range by reducing or expanding operating frequency range by base station 200.
If base station ENB200 judges not make subscriber equipment be operated in idle frequency range by reducing or expanding operating frequency range, such as, when the operating frequency range after reducing is not enough to support TD-LTE system work, base station is determined to perform adjustment.Now, base station will perform cell operation frequency error factor flow process.The process of concrete cell operation frequency error factor is similar to prior art, does not repeat them here.
When base station ENB200 judge can by reduce or expand operating frequency range make user equipment (UE) 300 be operated in idle frequency range time, if base station 200 judges user equipment (UE) 300 to be made to be operated in idle frequency range by reducing operating frequency range, then base station is determined currently to need adjustment System operating frequency.For realizing adjustment System operating frequency, base station 200 can first be only UE300 dispatching patcher reduce after operating frequency range in data field RB resource.Such as, as shown in Figure 3 b, after authoring system increase takies a channel, the RB resource that first base station will only dispatch for the user equipment (UE) in community in residue two idle channels.Now, the communication of the control domain between base station 200 and user equipment (UE) 300 is still operated on the channel of previous idle three, that is, the authorized system of one of them channel takies.Owing to now having stopped dispatching the data field resource on channel that authorized system takies, TD-LTE only appears in the time of control domain the interference of authoring system, as long as the follow-up interference that can stop control domain within a short period of time, can ensure that the annoyance level of TD-LTE on authoring system is unlikely and affect its business, can avoid again changing cell operation frequency to the impact of TD-LTE self.
Subsequently, base station 200 notifying user equipment UE300, the operating frequency range after reducing receives the signal of control domain.According to a kind of execution mode, base station sends control domain operating frequency adjustment order to user equipment (UE), carries switching instant T in this order.After switching instant T arrives, the operating frequency range of base station after reducing sends the signal of control domain, and the operating frequency range of user equipment (UE) after reducing receives the signal of control domain.Now, data field communicates with control domain and is all adjusted to idle channels.Wherein, base station can send described control domain operating frequency adjustment order by broadcast or dedicated signaling to user equipment (UE).After receiving the adjustment order sent by dedicated signaling by base station, user equipment (UE) can send acknowledge message to base station.
When base station 200 judge can by reduce or expand operating frequency range make user equipment (UE) 300 be operated in idle frequency range time, if base station ENB200 judges subscriber equipment to be made to be operated in idle frequency range by expansion operating frequency range, then base station is determined currently to need adjustment System operating frequency.Now, different from the situation reducing operating frequency range, base station still can be the RB resource in the former operating frequency range of dispatching user facility, does not need the operating frequency first adjusting data field.The operating frequency of control domain directly can be adjusted to the operating frequency range after expansion by the subscriber equipment in base station and community, thereafter base station namely can be dispatching user facility expand after the RB of operating frequency range.As shown in Figure 3 d, after authoring system reduces and takies a channel, base station will use idle RB resource (three idle channels) to carry out control domain scheduling for user equipment (UE).According to a kind of execution mode, base station ENB200 will send control domain operating frequency adjustment order to user equipment (UE) 300, carry switching instant T in this order.After switching instant T arrives, the operating frequency range of base station after expansion sends the signal of control domain, and the operating frequency range of user equipment (UE) 300 after expansion receives the signal of control domain.Wherein, base station ENB200 can send described control domain operating frequency adjustment order by broadcast or dedicated signaling to user equipment (UE).After the operating frequency of control domain is adjusted to the operating frequency range after expansion by base station and user equipment (UE), the data field RB resource that base station ENB200 will dispatch for user equipment (UE) 300 in the operating frequency range after expansion.
Fig. 4 shows the flow chart of the method for the adjustment System operating frequency according to a kind of execution mode of the application.
When system needs to change operating frequency in step 401, in step 402, can base station judge make subscriber equipment be operated in idle frequency range by reducing or expanding operating frequency range.
If do not make subscriber equipment be operated in idle frequency range by reducing or expanding operating frequency range, then in step 403, base station is determined to perform adjustment.Now can perform cell merge flow process.
If make subscriber equipment be operated in idle frequency range by reducing or expanding operating frequency range, then in step 404, can base station judge make subscriber equipment be operated in idle frequency range by reducing operating frequency range.
If make subscriber equipment be operated in idle frequency range by reducing operating frequency range, in step 405, base station is only the data field RB resource of (in the operating frequency range after reducing) in the new operating frequency range of UE dispatching patcher, and enters step 406 subsequently.
If do not need by reducing operating frequency range to make subscriber equipment be operated in new operating frequency range by expanding operating frequency range, then directly enter step 406.
In a step 406, base station notifying user equipment UE, receives the signal of control domain at new operating frequency range.Wherein, base station sends control domain operating frequency adjustment order to user equipment (UE), carries switching instant T in this order.Base station can send described control domain operating frequency adjustment order by broadcast or dedicated signaling to user equipment (UE).After receiving the adjustment order sent by dedicated signaling by base station, user equipment (UE) can send acknowledge message to base station.
After switching instant T arrives, in step 407, base station sends the signal of control domain at new operating frequency range, and user equipment (UE) receives the signal of control domain at new operating frequency range.
Fig. 5 shows the base station 200 according to a kind of execution mode of the application.As shown in the figure, base station 200 comprises determination module 210 and adjusting module 220.Determination module 210 is determined to need adjustment System operating frequency.The operating frequency of data field is adjusted to new operating frequency by adjusting module 220, and together with user equipment (UE), the operating frequency of control domain is adjusted to new operating frequency.
According to a kind of execution mode, can determination module 210 judge make subscriber equipment be operated in idle frequency range by reducing or expanding operating frequency range, if can not, then determination module 210 is determined to perform adjustment.Now can perform cell merge flow process; If can, then determination module 210 is determined currently to need adjustment System operating frequency.
As shown in Figure 5, base station 200 may further include communication module 230.
When determination module 210 determine can by reducing operating frequency range and making subscriber equipment be operated in idle frequency range time, adjusting module 220 be only UE scheduling reduce after operating frequency range in data field RB resource, then the operating frequency range of communication module 230 notifying user equipment UE after reducing receives the signal of control domain.Such as, communication module 230 can send control domain operating frequency adjustment order to user equipment (UE), carries switching instant T in this order.After carving T arrival upon handover, the operating frequency range of adjusting module 220 after reducing sends the signal of control domain to UE.User equipment (UE) also will after switching instant T arrives, and the operating frequency range after reducing receives the signal of control domain.According to a kind of embodiment, communication module 230 sends described control domain operating frequency adjustment order by broadcast or dedicated signaling to user equipment (UE).
When determination module 210 is determined subscriber equipment to be made to be operated in idle frequency range by expansion operating frequency range, the operating frequency of control domain is adjusted to the operating frequency range after expansion by adjusting module 220, and described base station will be the data field RB resource in the operating frequency range after user equipment (UE) scheduling expansion subsequently.Such as, communication module 230 will send control domain operating frequency adjustment order to user equipment (UE), carry switching instant T in described order.After carving T arrival upon handover, the operating frequency range of adjusting module 220 after expansion sends the signal of control domain.User equipment (UE) also will after switching instant T arrives, and the operating frequency range after expansion receives the signal of control domain.According to a kind of embodiment, communication module 230 sends described control domain operating frequency adjustment order by broadcast or dedicated signaling to user equipment (UE).
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Although the application utilizes foregoing description and embodiment to illustrate, the application is not limited thereto.The protection range of the application is limited by the claim in appended claims, and any equivalent replacement carried out technical characteristic in claim, all should belong to the application's limited range.
Claims (18)
1. a method for adjustment System operating frequency, comprising:
Base station is determined to need adjustment System operating frequency;
The operating frequency of data field is adjusted to new operating frequency by base station, makes subscriber equipment be operated in idle frequency range; And
The operating frequency of control domain is adjusted to described new operating frequency by base station and user equipment (UE).
2. method according to claim 1, wherein, described base station is determined to need the step of adjustment System operating frequency to comprise: when system needs to change spectrum occupancy state, can base station judge make subscriber equipment be operated in idle frequency range by reducing or expanding operating frequency range, if can not, then base station is determined to perform adjustment; If can, then base station is determined currently to need adjustment System operating frequency.
3. method according to claim 2, wherein, when described base station determine can by reducing operating frequency range and making subscriber equipment be operated in idle frequency range time, described base station be only UE scheduling reduce after operating frequency range in data field RB resource, then the operating frequency range of notifying user equipment UE after reducing receives the signal of control domain.
4. method according to claim 3, wherein, described base station will send control domain operating frequency adjustment order to user equipment (UE), carry switching instant T and the operating frequency range after reducing in described order; After switching instant T arrives, the operating frequency range of described base station after reducing sends the signal of control domain, and the operating frequency range of described user equipment (UE) after reducing receives the signal of control domain.
5. method according to claim 2, wherein, when described base station is determined subscriber equipment to be made to be operated in idle frequency range by expansion operating frequency range, the operating frequency of control domain is adjusted to the operating frequency range after expansion by described base station and user equipment (UE), and base station will be the data field RB resource in the operating frequency range after user equipment (UE) scheduling expansion subsequently.
6. method according to claim 5, wherein, described base station will send control domain operating frequency adjustment order to user equipment (UE), carry switching instant T in described order; After switching instant T arrives, the operating frequency range of described base station after expansion sends the signal of control domain, and the operating frequency range of described user equipment (UE) after expansion receives the signal of control domain.
7. a system for adjustment System operating frequency, comprises base station and user equipment (UE), wherein:
Described base station is determined to need adjustment System operating frequency;
The operating frequency of data field is adjusted to new operating frequency by described base station, makes subscriber equipment be operated in idle frequency range;
The operating frequency of control domain is adjusted to described new operating frequency by described base station and user equipment (UE).
8. system according to claim 7, wherein, when system needs to change spectrum occupancy state, can base station judge make subscriber equipment be operated in idle frequency range by reducing or expanding operating frequency range, if can not, then base station is determined to perform adjustment; If can, then base station is determined currently to need adjustment System operating frequency.
9. system according to claim 8, wherein, when described base station determine can by reducing operating frequency range and making subscriber equipment be operated in idle frequency range time, described base station be only UE scheduling reduce after operating frequency range in data field RB resource, then the operating frequency range of notifying user equipment UE after reducing receives the signal of control domain.
10. system according to claim 9, wherein, described base station will send control domain operating frequency adjustment order to user equipment (UE), carry switching instant T in described order; After switching instant T arrives, the operating frequency range of described base station after reducing sends the signal of control domain, and the operating frequency range of described user equipment (UE) after reducing receives the signal of control domain.
11. systems according to claim 8, wherein, when described base station is determined subscriber equipment to be made to be operated in idle frequency range by expansion operating frequency range, the operating frequency of control domain is adjusted to the operating frequency range after expansion by described base station and user equipment (UE), and base station will be the data field RB resource in the operating frequency range after user equipment (UE) scheduling expansion subsequently.
12. systems according to claim 11, wherein, described base station will send control domain operating frequency adjustment order to user equipment (UE), carry switching instant T in described order; After switching instant T arrives, the operating frequency range of described base station after expansion sends the signal of control domain, and the operating frequency range of described user equipment (UE) after expansion receives the signal of control domain.
13. 1 kinds of base stations, comprising:
Determination module, determines to need adjustment System operating frequency; And
Adjusting module, is adjusted to new operating frequency by the operating frequency of data field, makes subscriber equipment be operated in idle frequency range, and together with user equipment (UE), the operating frequency of control domain is adjusted to described new operating frequency.
14. base stations according to claim 13, wherein, when system needs to change spectrum occupancy state, can described determination module judge make subscriber equipment be operated in idle frequency range by reducing or expanding operating frequency range, if can not, then described determination module is determined to perform adjustment; If can, then described determination module is determined currently to need adjustment System operating frequency.
15. base stations according to claim 14, wherein, described base station comprises communication module further, when described determination module determine can by reducing operating frequency range and making subscriber equipment be operated in idle frequency range time, described adjusting module be only UE scheduling reduce after operating frequency range in data field RB resource, then the operating frequency range of described communication module notifying user equipment UE after reducing receives the signal of control domain.
16. base stations according to claim 15, wherein, described communication module will send control domain operating frequency adjustment order to user equipment (UE), carry switching instant T in described order; After switching instant T arrives, the operating frequency range of described adjusting module after reducing sends the signal of control domain.
17. base stations according to claim 14, wherein, when described determination module is determined subscriber equipment to be made to be operated in idle frequency range by expansion operating frequency range, the operating frequency of control domain is adjusted to the operating frequency range after expansion by described adjusting module, and described base station will be the data field RB resource in the operating frequency range after user equipment (UE) scheduling expansion subsequently.
18. base stations according to claim 17, wherein, described base station comprises communication module further, and described communication module will send control domain operating frequency adjustment order to user equipment (UE), carry switching instant T in described order; After switching instant T arrives, the operating frequency range of described adjusting module after expansion sends the signal of control domain.
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| CN201210170100.XA CN103458510B (en) | 2012-05-28 | 2012-05-28 | A kind of method of adjustment System operating frequency, system and base station |
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| CN201210170100.XA CN103458510B (en) | 2012-05-28 | 2012-05-28 | A kind of method of adjustment System operating frequency, system and base station |
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| CN101361293A (en) * | 2005-11-16 | 2009-02-04 | 韩国电子通信研究院 | Method for switching and managing frequency access in cognitive radio system, base station and subscriber station using the same |
| EP2051555A3 (en) * | 2004-06-08 | 2009-04-29 | Lg Electronics Inc. | A method for handover between frequency allocation in broadband wireless access system |
| CN102196452A (en) * | 2010-03-11 | 2011-09-21 | 中国移动通信集团公司 | Frequency switching method and equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8031618B2 (en) * | 2006-10-16 | 2011-10-04 | Stmicroelectronics, Inc. | Methods of RF sensing control and dynamic frequency selection control for cognitive radio based dynamic spectrum access network systems-cognitive dynamic frequency hopping |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2051555A3 (en) * | 2004-06-08 | 2009-04-29 | Lg Electronics Inc. | A method for handover between frequency allocation in broadband wireless access system |
| CN101361293A (en) * | 2005-11-16 | 2009-02-04 | 韩国电子通信研究院 | Method for switching and managing frequency access in cognitive radio system, base station and subscriber station using the same |
| CN102196452A (en) * | 2010-03-11 | 2011-09-21 | 中国移动通信集团公司 | Frequency switching method and equipment |
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