CN102545997B - Method for determining system frame number, communication system and device - Google Patents
Method for determining system frame number, communication system and device Download PDFInfo
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Abstract
The embodiment of the invention discloses a method for determining a system frame number, a communication system and a device, which are applied to scenes that a cell switches the working frequency. The method comprises the following steps: stopping from a base station within a time slot from a time point T1 moment worked in the original working frequency F1 to a time point T2 moment worked in the new working frequency F2, and determining a system frame number S2 at the T2 moment by continuously counting or pausing the counting on the basis of a system frame number S1 at the T1 moment; or resetting the system frame number T2 at the T2 moment as a convention value. By adopting the method provided by the invention, UE (user equipment) can determine the system frame number when the cell is switched, thus the UE can be easy to be switched to the new working efficiency and then accurately accessed to the base station.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to a kind of method, communication system and equipment of definite System Frame Number.
Background technology
In Cellular Networks, use under the scene of perception radiotechnics and other spectrum authorization system share spectrum resources (CR), when spectrum authorization system is resumed frequency resource, can there is the situation of switching operating frequency of cells, that is: the base station in Cellular Networks community need to stop communicating by letter in former operating frequency with subscriber equipment (UE), then on new idle frequence, sets up communication.The process need cost certain hour of base station and UE switch operating frequency, changes rf frequency and carries out relevant treatment for base station, UE, as data cached, reset equipment, in new frequency, restarting system broadcasts etc.
The in the situation that of base station and UE maintenance proper communication, System Frame Number (System Frame Number, SFN) is understood along with every frame of time adds 1, and to 1024 deliverys.Under CR scene during switching operating frequency of cells, although UE still accesses same base station, but communicating by letter and can suspend a period of time between base station and UE, within the time period of suspending in communication, how to confirm system frame number SFN, corresponding technical scheme is not also provided at present, and will makes UE be switched to after new operating frequency correctly access base station, how to confirm System Frame Number is one of current technical problem of needing solution badly.
Summary of the invention
In view of this, the invention provides a kind of method, communication system and equipment of definite System Frame Number, so that when community occurring switching, UE can determine System Frame Number, thereby be convenient to UE, is switched to after new operating frequency correctly access base station.
Technical scheme of the present invention is specifically achieved in that
A method for definite System Frame Number, is applied to the scene of switching operating frequency of cells, and the method comprises:
When base station stops at the time point T1 of former operating frequency F1 work, be carved into base station and start the time point T2 that works at new operating frequency F2 in the time period constantly, by continuing counting or suspend counting and determine T2 System Frame Number S2 constantly on T1 System Frame Number S1 basis constantly, or T2 System Frame Number S2 is constantly reset to about definite value.
A communication system for definite System Frame Number, this communication system comprises base station and UE;
When base station stops at the time point T1 of former operating frequency F1 work, be carved into and start the time point T2 that works at new operating frequency F2 in the time period constantly, base station and UE are on T1 System Frame Number S 1 basis constantly, adopt identical method to continue counting or suspend counting, according to continuing counting or suspending the result of counting and determine System Frame Number S2, or base station and UE reset to about definite value by T2 System Frame Number S2 constantly.
A communication system for definite System Frame Number, this communication system comprises base station and UE;
Described base station, for being carved into when self stopping at the time point T1 of former operating frequency F1 work in the time period that starts time point T2 moment of working at new operating frequency F2, on T1 System Frame Number S1 basis constantly, continue counting or suspend counting and determine T2 System Frame Number S2 constantly, or T2 System Frame Number S2 is constantly reset to about definite value, the T2 moment and System Frame Number S2 are notified to UE.
A base station, this base station comprises frame number determination module;
Described frame number determination module, be carved into when stopping at the time point T1 of former operating frequency F1 work from base station in the time period that base station starts time point T2 moment of working at new operating frequency F2, by continuing counting or suspend counting and determine T2 System Frame Number S2 constantly on T1 System Frame Number S1 basis constantly, or T2 System Frame Number S2 is constantly reset to about definite value.
A user terminal, this user terminal comprises System Frame Number determination module;
Described System Frame Number determination module, be carved into when stopping at the time point T1 of former operating frequency F1 work from base station in the time period that base station starts time point T2 moment of working at new operating frequency F2, by continuing counting or suspend counting and determine T2 System Frame Number S2 constantly on T1 System Frame Number S1 basis constantly, or T2 System Frame Number S2 is constantly reset to about definite value.
A user terminal, this user terminal comprises receiver module and communication module;
Described receiver module, carries T2 constantly and the notification message of System Frame Number S2 for receiving, and wherein, T2 is that base station starts the time point of working on new operating frequency F2 constantly, and System Frame Number S2 is T2 System Frame Number constantly;
Described communication module, for constantly adopting System Frame Number S2 to initiate random access request or directly working on new operating frequency F2 without random access procedure at T2.
A user terminal, this user terminal comprises receiver module and communication module;
Described receiver module, for receiving the notification message that carries the T2 moment, System Frame Number S2 and System Frame Number S3, wherein, T2 is that base station starts the time point of working on new operating frequency F2 constantly, System Frame Number S2 is T2 System Frame Number constantly;
Described communication module, for determine the moment of System Frame Number S3 indication according to the value of the T2 moment and System Frame Number S2, initiates random access request or directly on new operating frequency F2, is working without random access procedure in the moment of System Frame Number S3 indication.
As seen from the above technical solution, when base station stops at the time point T1 working on former operating frequency F1, be carved into and start the time point T2 that works in the time period constantly on new operating frequency F2, in the time period that stops communicating by letter with UE in base station, the present invention by continuing counting or suspending counting and determine T2 System Frame Number S2 constantly on T1 System Frame Number S1 basis constantly, or T2 System Frame Number S2 is constantly reset to about definite value, clear and definite definite method of System Frame Number, thereby while making to occur community switching, UE can determine System Frame Number, and then be convenient to UE and be switched to after new operating frequency F2 correctly access base station.
Accompanying drawing explanation
Fig. 1 is the signaling process figure of definite SFN provided by the invention.
Fig. 2 is the communication system architecture figure of definite System Frame Number provided by the invention.
Fig. 3 is architecture of base station figure provided by the invention.
Fig. 4 is the first structure chart of user terminal provided by the invention.
Fig. 5 is the second structure chart of user terminal provided by the invention.
Embodiment
The application need to determine the problem of System Frame Number for UE when community occurrence frequency switches, System Frame Number collocation method and signaling process when UE works on new operating frequency F2 have been proposed, make UE be switched to after new operating frequency correctly access base station, and owing to completing time slot and the SFN configuration of switching community, will exert an influence to discontinuous reception (DRX) and semi-continuous scheduling (SPS), so the application also provides the method for definite DRX and SPS cycle initial time.
When switching operating frequency of cells, the time point that base station stops at the upper work of former operating frequency F1 is designated as T1 constantly, T1 SFN value is constantly designated as S1, the time point that base station starts to work on new operating frequency F2 is designated as T2 constantly, T2 SFN value is constantly designated as S2, and the SFN value that UE starts to work adopted on new operating frequency F2 is designated as S3.
Can adopt any one method in following three kinds of methods to determine S2:
A), during TI～T2, SFN value is suspended counting on the basis of S1, S2=MOD (S1+1,1024), the value that value of S2 is S1 adds after 1 1024 deliverys, wherein MOD represents delivery.
B), during T1～T2, SFN value continues counting, S2=MOD (S1+ (T2-T1)/10 millisecond, 1024) on the basis of S1, when frame length is 10 milliseconds, the value of the S2 frame number that to be T1 experience to the time period of T2 and S1's and to 1024 deliverys.
C), T2 SFN value is constantly reset to about definite value, such as replacement S2=0, also can reset to other numerical value.
Can stipulate that base station and UE are on T1 System Frame Number S1 basis constantly by agreement, adopt identical method to continue counting or suspend counting, according to continuing counting or suspending the result of counting and determine System Frame Number S2, or, base station and UE constantly reset to about definite value by System Frame Number S2 at T2, the System Frame Number S3 of each terminal is determined in base station according to System Frame Number S2, each terminal is issued by the T2 moment and System Frame Number S3 in base station.
Another method be by base station on T1 System Frame Number S1 basis constantly, adopt identical method to continue counting or suspend counting, according to continuing counting or suspending the result of counting and determine System Frame Number S2, or constantly System Frame Number S2 is reset to about definite value at T2, according to System Frame Number S2, determine the System Frame Number S3 of each terminal, terminal is issued by the T2 moment, System Frame Number S2 and System Frame Number S3 in base station, specifically refers to Fig. 1.
Fig. 1 is the signaling process figure of definite SFN provided by the invention.
As shown in Figure 1, this flow process comprises:
Step 101, UE is issued by switching operating frequency of cells signaling message in base station, carries the System Frame Number S3 that UE starts working adopted on F2 in new operating frequency in this message.
Wherein, base station can according to agreement regulation adopt above-mentioned a), b), c) in any one method determine System Frame Number S2, for example can from a), b), c) select a kind of method to determine System Frame Number S2, or by agreement regulation adopt a), b), c) in a kind of method determine System Frame Number S2, then System Frame Number S3 is determined according to System Frame Number S2 in base station.For example, System Frame Number S3 can equal System Frame Number S2, and base station and UE start working simultaneously on new operating frequency F2; System Frame Number S3 also can be not equal to System Frame Number S2, and first start working in base station on new operating frequency F2, and then UE starts working on new operating frequency F2 again.
Base station can be by the described signaling message of broadcast to UE reporting system frame number S3, and the System Frame Number S3 carrying in the signaling message that each UE in the community of switch operating frequency receives is identical.
Base station can also be by dedicated signaling message to UE reporting system frame number S3, and the System Frame Number S3 carrying in the signaling message that each UE in the community of switch operating frequency receives can be different.
Step 102, UE starts to adopt System Frame Number S3 work on new operating frequency F2 according to described signaling message.
Wherein, UE starts to work and comprise on new operating frequency F2: UE sends random access request or directly on new operating frequency F2, works to base station.When UE directly works in new operating frequency, UE can not carry out random access procedure, but directly to sending resource request, or receive Physical Downlink Control Channel (PDCCH) scheduling of resource, or receiving system message.
Wherein, if adopt the mode that continues counting to determine S2, in described signaling message, can carry T2 constantly, UE can determine the time that UE starts working on new operating frequency F2 according to the S3 value that continues to count to get.
If adopt the mode of suspending counting or resetting, determine S2, in described signaling message, need to carry T2 information constantly, UE determines T2 constantly accordingly, when UE according to method a), b), while c) determining System Frame Number S2 voluntarily, base station does not need System Frame Number S2 to notify to UE, otherwise base station also needs System Frame Number S2 to notify to UE, therefore, UE can determine that T2 System Frame Number is constantly S2, and then determine according to System Frame Number S3 the moment that this UE starts working on new operating frequency F2, then at the corresponding System Frame Number S3 that constantly adopts, start to work on new operating frequency F2.
Under CR scene, during switching operating frequency of cells, base station of the present invention notifies UE to start the SFN value S3 that starts working and adopt on new operating frequency F2 in switching command.In addition, due to when the switching operating frequency of cells, the UE of whole community will be switched on new operating frequency F2, for avoiding random access collision or resource congestion, the time of the different new operating frequency F2 of access can be set for different UEs, and the System Frame Number S3 that specifically sends the different new operating frequency F2 of access by the UE to different realizes.In the situation that UE directly accesses new operating frequency F2 without random access, the SFN for UE specifies the different new operating frequency F2 of access can avoid a large amount of UE to initiate resource request simultaneously.Need be in the situation that random access procedure access new operating frequency F2 at UE, the SFN for UE specifies the different new operating frequency F2 of access, can avoid a large amount of UE to access at random simultaneously and cause access interference.
Below the method for definite System Frame Number provided by the invention is illustrated, given example is not limited to the present invention.
Example 1, when adopting described method c) while determining SFN, moment T2 and the T2 SFN value S2 constantly that UE can access new operating frequency F2 carried in base station in the switch operating frequency message of broadcast cell, all UE can access new operating frequency F2 at T2 constantly, and SFN value starts to count on the basis of S2 from T2 constantly.
Example 2, when adopting described method a) while determining SFN, base station can be carried base station and start the SFN value S3 that the moment T2 that communicates by letter and this UE can access new operating frequency F2 on new operating frequency F2 in the switch operating frequency message of dedicated cell.Because SFN suspends counting at switching slot, UE is known at T2 SFN value S2=MOD (S1+1,1024) constantly.And then, if S3 is >=S2, self can access new operating frequency F2 in T2+ (S3-S2) * 10 millisecond moment known this UE of UE, if S3 < is S2, self can access new operating frequency F2 in T2+ (S3+1024-S2) * 10 millisecond moment known this UE of UE.
In the present invention, terminal can adopt System Frame Number S2 to start to work on new operating frequency F2 at T2 constantly.Described beginning is worked and is comprised on new operating frequency F2: UE constantly initiates random access request or directly on new operating frequency F2, works without random access procedure at T2.
Base station can also determine that UE starts the System Frame Number S3 that works adopted on new operating frequency F2, notifies System Frame Number S3 to UE according to System Frame Number S2.
Wherein, base station can be notified System Frame Number S3 to UE by broadcast or dedicated signaling.
While System Frame Number S3 being notified to UE in base station by dedicated signaling, it is different that the System Frame Number S3 carrying in the dedicated signaling of different UEs is issued in base station.
In the present invention, can be at the broadcast or the dedicated signaling carrying system frame number S3 that work on new operating frequency F2 for notifying UE to be switched to.
UE can initiate random access request or directly on new operating frequency F2, work without random access procedure in the moment of System Frame Number S3 indication.Describedly without random access procedure and directly on new operating frequency F2, work and comprise: on new operating frequency F2, sending resource request or receiving physical downlink control channel PDCCH scheduling of resource or system message.
About completing time slot and the impact of SFN configuration on DRX and SPS generation of switching community, the application also provides the method for definite DRX and SPS cycle initial time, specific as follows:
During switching time gap T1～T2, suspend DRX and the SPS process of base station and UE completely, after arriving T2, then recover DRX and SPS process.
Arrive after T2, the SFN value S2 that base station and UE are used base station to start to start working on new operating frequency F2 calculates DRX and the initial time in SPS cycle, does not need DRX and SPS to reshuffle.
The present invention also provides the communication system of definite System Frame Number, this communication system comprises base station and UE, in a kind of scheme, when base station stops at the time point T1 of former operating frequency F1 work, be carved into and start the time point T2 that works at new operating frequency F2 in the time period constantly, base station and UE are on T1 System Frame Number S1 basis constantly, adopt identical method to continue counting or suspend counting, according to continuing counting or suspending the result of counting and determine System Frame Number S2, or base station and UE reset to about definite value by T2 System Frame Number S2 constantly.
Terminal constantly adopts System Frame Number S2 to initiate random access request or directly on new operating frequency F2, works without random access procedure at T2.
The present invention also provides the another kind of implementation of described communication system, specifically refers to Fig. 2.
Fig. 2 is the communication system architecture figure of definite System Frame Number provided by the invention.
As shown in Figure 2, this communication system comprises base station 201 and a plurality of UE202.
Base station 201, for being carved into when self stopping at the time point T1 of former operating frequency F1 work in the time period that starts time point T2 moment of working at new operating frequency F2, on T1 System Frame Number S1 basis constantly, continue counting or suspend counting and determine T2 System Frame Number S2 constantly, or T2 System Frame Number S2 is constantly reset to about definite value, the T2 moment and System Frame Number S2 are notified to UE202.
UE202, for constantly adopting System Frame Number S2 to start to work on new operating frequency F2 at T2.
Base station 201 comprises a module, for determining that according to System Frame Number S2 UE starts the System Frame Number S3 that works adopted on new operating frequency F2, notifies System Frame Number S3 to UE202.
UE202 comprises a module, for according to T2 constantly and the value of System Frame Number S2 determine moment of System Frame Number S3 indication, System Frame Number S3 indication time be engraved on new operating frequency F2 and adopt System Frame Number S3 to work.
Base station 201, sends the dedicated signaling that carries different system frame number S3 to different UE202.
UE202, initiated random access request or directly on new operating frequency F2, works without random access procedure in the moment of System Frame Number S3 indication.
UE202 without random access procedure and directly works to be included in and on new operating frequency F2, sends resource request or receive physical downlink control channel PDCCH scheduling of resource or system message on new operating frequency F2.
UE202 determines discontinuous reception DRX cycle or the initial time in semi-continuous scheduling SPS cycle according to System Frame Number S2.
Fig. 3 is architecture of base station figure provided by the invention.
As shown in Figure 3, this base station comprises frame number determination module 301.
Frame number determination module 301, be carved into when stopping at the time point T1 of former operating frequency F1 work from base station in the time period that base station starts time point T2 moment of working at new operating frequency F2, by continuing counting or suspend counting and determine T2 System Frame Number S2 constantly on T1 System Frame Number S1 basis constantly, or T2 System Frame Number S2 is constantly reset to about definite value.
This system can also comprise sending module 302.
Sending module 302, for sending a notification message to UE, this notification message is for notifying the T2 moment and System Frame Number S2 to UE.
This base station also comprises a module, for determining that according to System Frame Number S2 UE starts the System Frame Number S3 that works adopted on new operating frequency F2, notifies System Frame Number S3 to UE.
The module that described base station comprises is used to different UE to determine different System Frame Number S3.
Fig. 4 is the first structure chart of user terminal provided by the invention.
As shown in Figure 4, this user terminal comprises System Frame Number determination module 401.
System Frame Number determination module 401, be carved into when stopping at the time point T1 of former operating frequency F1 work from base station in the time period that base station starts time point T2 moment of working at new operating frequency F2, by continuing counting or suspend counting and determine T2 System Frame Number S2 constantly on T1 System Frame Number S1 basis constantly, or T2 System Frame Number S2 is constantly reset to about definite value.
This user terminal also comprises communication module 403, for constantly adopt System Frame Number S2 to start to work on new operating frequency F2 at T2.
This user terminal also comprises receiver module 402, for receiving the notification message that carries System Frame Number S3.
Communication module 403, for determine the moment of System Frame Number S3 indication according to the value of the T2 moment and System Frame Number S2, adopts System Frame Number S3 to start working in new operating frequency in the moment of System Frame Number S3 indication.
Fig. 5 is the second structure chart of user terminal provided by the invention.
As shown in Figure 5, this user terminal comprises receiver module 501 and communication module 502.
Receiver module 501, carries T2 constantly and the notification message of System Frame Number S2 for receiving, and wherein, T2 is that base station starts the time point of working on new operating frequency F2 constantly, and System Frame Number S2 is T2 System Frame Number constantly.
Communication module 502, for constantly adopting System Frame Number S2 to initiate random access request or directly working on new operating frequency F2 without random access procedure at T2.Or:
Receiver module 501, for receiving the notification message that carries the T2 moment, System Frame Number S2 and System Frame Number S3, wherein, T2 is that base station starts the time point of working on new operating frequency F2 constantly, System Frame Number S2 is T2 System Frame Number constantly.
Communication module 502, for determine the moment of System Frame Number S3 indication according to the value of the T2 moment and System Frame Number S2, initiates random access request or directly on new operating frequency F2, is working without random access procedure in the moment of System Frame Number S3 indication.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (28)
1. a method for definite System Frame Number, is applied to the scene of switching operating frequency of cells, it is characterized in that, the method comprises:
When base station stops at the time point T1 of former operating frequency F1 work, be carved into base station and start the time point T2 that works at new operating frequency F2 in the time period constantly, by continuing counting or suspend counting and determine T2 System Frame Number S2 constantly on T1 System Frame Number S1 basis constantly, or T2 System Frame Number S2 is constantly reset to about definite value.
2. method according to claim 1, is characterized in that,
Base station and UE, on T1 System Frame Number S1 basis constantly, adopt identical method to continue counting or time-out counting, according to continuing counting or suspending the result of counting and determine System Frame Number S2;
Or base station and UE reset to about definite value by T2 System Frame Number S2 constantly.
3. method according to claim 1, is characterized in that,
Base station is continued counting or is suspended counting and determine T2 System Frame Number S2 constantly on T1 System Frame Number S1 basis constantly, or T2 System Frame Number S2 is constantly reset to about definite value;
Base station notifies the T2 moment and System Frame Number S2 to UE.
4. according to the method in claim 2 or 3, it is characterized in that, the method also comprises:
UE adopts System Frame Number S2 to start to work on new operating frequency F2 at T2 constantly.
5. method according to claim 4, is characterized in that, described beginning is worked and comprised on new operating frequency F2:
UE constantly initiates random access request or directly on new operating frequency F2, works without random access procedure at T2.
6. according to the method in claim 2 or 3, it is characterized in that, the method also comprises:
Base station determines that according to System Frame Number S2 UE starts the System Frame Number S3 that works adopted on new operating frequency F2, notifies System Frame Number S3 to UE.
7. method according to claim 6, is characterized in that,
Base station is notified System Frame Number S3 to UE by broadcast or dedicated signaling.
8. method according to claim 7, is characterized in that,
While System Frame Number S3 being notified to UE in base station by dedicated signaling, it is different that the System Frame Number S3 carrying in the dedicated signaling of different UEs is issued in base station.
9. method according to claim 6, is characterized in that,
At the broadcast or the dedicated signaling carrying system frame number S3 that work on new operating frequency F2 for notifying UE to be switched to.
10. method according to claim 6, is characterized in that, the method also comprises:
UE initiated random access request or directly on new operating frequency F2, works without random access procedure in the moment of System Frame Number S3 indication.
11. methods according to claim 10, is characterized in that, describedly without random access procedure and directly on new operating frequency F2, work and comprise:
On new operating frequency F2, send resource request or receive physical downlink control channel PDCCH scheduling of resource or system message.
12. according to the method described in claim 1 or 2 or 3, it is characterized in that,
UE determines discontinuous reception DRX cycle or the initial time in semi-continuous scheduling SPS cycle according to System Frame Number S2.
The communication system of 13. 1 kinds of definite System Frame Numbers, is characterized in that, this communication system comprises base station and UE;
When base station stops at the time point T1 of former operating frequency F1 work, be carved into and start the time point T2 that works at new operating frequency F2 in the time period constantly, base station and UE are on T1 System Frame Number S1 basis constantly, adopt identical method to continue counting or suspend counting, according to continuing counting or suspending the result of counting and determine System Frame Number S2, or base station and UE reset to about definite value by T2 System Frame Number S2 constantly.
14. systems according to claim 13, is characterized in that,
UE constantly adopts System Frame Number S2 to initiate random access request or directly on new operating frequency F2, works without random access procedure at T2.
The communication system of 15. 1 kinds of definite System Frame Numbers, is characterized in that, this communication system comprises base station and UE;
Described base station, for being carved into when self stopping at the time point T1 of former operating frequency F1 work in the time period that starts time point T2 moment of working at new operating frequency F2, on T1 System Frame Number S1 basis constantly, continue counting or suspend counting and determine T2 System Frame Number S2 constantly, or T2 System Frame Number S2 is constantly reset to about definite value, the T2 moment and System Frame Number S2 are notified to UE.
16. communication systems according to claim 15, is characterized in that,
Described UE, for constantly adopting System Frame Number S2 to start to work on new operating frequency F2 at T2.
17. communication systems according to claim 15, is characterized in that,
Described base station comprises a module, for determining that according to System Frame Number S2 UE starts the System Frame Number S3 that works adopted on new operating frequency F2, notifies System Frame Number S3 to UE;
Described UE comprises a module, for according to T2 constantly and the value of System Frame Number S2 determine moment of System Frame Number S3 indication, System Frame Number S3 indication time be engraved on new operating frequency F2 and adopt System Frame Number S3 to work.
18. communication systems according to claim 16, is characterized in that,
Described base station, sends the dedicated signaling that carries different system frame number S3 to different UE;
Described UE, initiated random access request or directly on new operating frequency F2, works without random access procedure in the moment of System Frame Number S3 indication.
19. communication systems according to claim 18, is characterized in that,
Described UE without random access procedure and directly works to be included in and on new operating frequency F2, sends resource request or receive physical downlink control channel PDCCH scheduling of resource or system message on new operating frequency F2.
20. according to claim 15 to the communication system described in 19 arbitrary claims, it is characterized in that,
UE determines discontinuous reception DRX cycle or the initial time in semi-continuous scheduling SPS cycle according to System Frame Number S2.
21. 1 kinds of base stations, is characterized in that, this base station comprises frame number determination module;
Described frame number determination module, be carved into when stopping at the time point T1 of former operating frequency F1 work from base station in the time period that base station starts time point T2 moment of working at new operating frequency F2, by continuing counting or suspend counting and determine T2 System Frame Number S2 constantly on T1 System Frame Number S1 basis constantly, or T2 System Frame Number S2 is constantly reset to about definite value.
22. base stations according to claim 21, is characterized in that, this base station also comprises sending module;
Described sending module, for sending a notification message to UE, this notification message is for notifying the T2 moment and System Frame Number S2 to UE.
23. according to the base station described in claim 21 or 22, it is characterized in that,
This base station also comprises a module, for determining that according to System Frame Number S2 UE starts the System Frame Number S3 that works adopted on new operating frequency F2, notifies System Frame Number S3 to UE.
24. base stations according to claim 23, is characterized in that,
The module that described base station comprises is used to different UE to determine different System Frame Number S3.
25. 1 kinds of UE, is characterized in that, this UE comprises System Frame Number determination module;
Described System Frame Number determination module, be carved into when stopping at the time point T1 of former operating frequency F1 work from base station in the time period that base station starts time point T2 moment of working at new operating frequency F2, by continuing counting or suspend counting and determine T2 System Frame Number S2 constantly on T1 System Frame Number S1 basis constantly, or T2 System Frame Number S2 is constantly reset to about definite value.
26. UE according to claim 25, is characterized in that, this UE also comprises communication module;
Described communication module, for constantly adopting System Frame Number S2 to initiate random access request or directly working on new operating frequency F2 without random access procedure at T2.
27. 1 kinds of UE, is characterized in that, this UE comprises receiver module and communication module;
Described receiver module, carries T2 constantly and the notification message of System Frame Number S2 for receiving, and wherein, T2 is that base station starts the time point of working on new operating frequency F2 constantly, and System Frame Number S2 is the System Frame Number in the T2 moment described in claim 22;
Described communication module, for constantly adopting System Frame Number S2 to initiate random access request or directly working on new operating frequency F2 without random access procedure at T2.
28. 1 kinds of UE, is characterized in that, this UE comprises receiver module and communication module;
Described receiver module, for receiving the notification message that carries the T2 moment, System Frame Number S2 and System Frame Number S3, wherein, T2 is that base station starts the time point of working on new operating frequency F2 constantly, and System Frame Number S2 is the System Frame Number in the T2 moment described in claim 23;
Described communication module, for determine the moment of System Frame Number S3 indication according to the value of the T2 moment and System Frame Number S2, initiates random access request or directly on new operating frequency F2, is working without random access procedure in the moment of System Frame Number S3 indication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010624455.2A CN102545997B (en) | 2010-12-31 | 2010-12-31 | Method for determining system frame number, communication system and device |
Applications Claiming Priority (1)
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| CN201010624455.2A CN102545997B (en) | 2010-12-31 | 2010-12-31 | Method for determining system frame number, communication system and device |
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| WO2000038361A2 (en) * | 1998-12-18 | 2000-06-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Clock synchronization in telecommunications network using system frame number |
| KR100384899B1 (en) * | 2001-01-10 | 2003-05-23 | 한국전자통신연구원 | Method for seamless inter frequency hard handover in wireless telecommunication system |
| DE10237330A1 (en) * | 2002-08-14 | 2004-02-26 | Siemens Ag | Improved RF-communication system e.g. mobile RF system, has at least one control command sent to second RF station for dynamic assignment of command to time slot |
| KR100630170B1 (en) * | 2004-09-17 | 2006-09-29 | 삼성전자주식회사 | A Method and An Apparatus for Managing Demodulation Timing of UE by cells In Asynchronous Mobile Telecommunication Syatem |
| CN100444687C (en) * | 2005-03-10 | 2008-12-17 | 大唐移动通信设备有限公司 | Switchover object cell selection method in mobile communication system |
| KR100770838B1 (en) * | 2005-05-11 | 2007-10-26 | 삼성전자주식회사 | Method for handover of mobile telecommunication system and radio network controller of mobile telecommunication system for the same |
| US7734264B2 (en) * | 2006-08-29 | 2010-06-08 | Qualcomm Incorporated | System frame number (SFN) evaluator |
| US7715439B2 (en) * | 2007-02-05 | 2010-05-11 | Sharp Laboratories Of America, Inc. | Systems and methods for shifting the position of a symbol to reduce transmission overhead |
| CN101651877A (en) * | 2008-08-11 | 2010-02-17 | 华为技术有限公司 | Method, system and device for allocating and measuring gap |
| CN101902692B (en) * | 2009-05-31 | 2014-06-11 | 中兴通讯股份有限公司 | Method for indicating terminal action time by network side |
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