CN103516498A - Method and apparatus for updating time division duplex (TDD) uplink and downlink configuration - Google Patents
Method and apparatus for updating time division duplex (TDD) uplink and downlink configuration Download PDFInfo
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Abstract
The invention discloses a method for updating time division duplex (TDD) uplink and downlink configuration and an apparatus for updating time division duplex (TDD) uplink and downlink configuration. The method comprises the following steps that: UE receives time division duplex (TDD) re-configuration information at time points when each piece of time division duplex (TDD) re-configuration information is transmitted; if the UE receives updated time division duplex (TDD) re-configuration information in a current time division duplex (TDD) re-configuration period, the UE begins using time division duplex (TDD) uplink and downlink configuration indicated by the updated time division duplex (TDD) re-configuration information from a next time division duplex (TDD) re-configuration period; and if the UE does not receive the updated time division duplex (TDD) re-configuration information in the current time division duplex (TDD) re-configuration period, the UE continues to use time division duplex (TDD) uplink and downlink configuration used by the current time division duplex (TDD) re-configuration period in the next time division duplex (TDD) re-configuration period. By means of the method and apparatus for updating the time division duplex (TDD) uplink and downlink configuration of the invention, time division duplex (TDD) uplink and downlink configuration used by one community can be flexibly adjusted.
Description
Technical field
The present invention relates to the communications field, in particular to update method and the device of a kind of time division duplex (TDD) uplink-downlink configuration.
Background technology
Current Long Term Evolution (LTE, Long Term Evolution) technology, micro-wave access to global intercommunication (Wimax, Worldwide Interoperability for Microwave Access), super mobile broadband (UMB, Ultra Mobile Broadband) system has two kinds of duplex modes: Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplex) mode and time division duplex (TDD, Time Division Duplex) mode.Under FDD mode, up link and down link adopt different frequency bands to carry out transfer of data simultaneously, and under TDD mode, up link and down link are used identical frequency band timesharing to carry out transfer of data.
Carry out in the wireless system of transfer of data as unit take radio frames (Radio Frame), the up link of radio open transmission and down link generally be take radio frames and are transmitted data as unit, wherein, each radio frames is comprised of several subframes (Subframe).For LTE system, subframe is all base unit with OFDM (OFDM, Orthogonal Frequency Division Multiplexing) symbol (Symbol), and each radio frames is comprised of 10 subframes.
The resource of the up/down row subframe of FDD system is distributed relatively independent, can carry out respectively resource distribution to descending sub frame and sub-frame of uplink.Can be according to business in TDD system need to the some subframes in radio frames be assigned as respectively to sub-frame of uplink and descending sub frame according to certain ratio.Generally, in TDD system, the ratio of sub-frame of uplink and descending sub frame number has some kinds, to meet the demand of different service types.According to the demand of different regions type of service, select suitable up-downgoing proportional arrangement to be conducive to improve the spectrum efficiency of TDD system.Such as, for the many areas of downloading data business, can select the configuration that descending sub frame is many; For the many areas of the business of uploading, can select the many configurations of sub-frame of uplink; The area of comparing balance for upper download traffic carrying capacity, can select the similar identical proportional arrangement of ascending-descending subframes.
Current LTE TDD(abbreviation TD-LTE) in system, the uplink-downlink configuration of TDD system has been set to 7 kinds of modes, every kind of mode can be called a TDD uplink-downlink configuration sign, as shown in the first row of table 1.In table 1, a radio frames has comprised 10 subframes, and subframe numbers is labeled as respectively: 0,1,2,3,4,5,6,7,8,9, and wherein, " D " represents that this subframe is descending sub frame; " U " represents that this subframe is sub-frame of uplink; " S " represents that this subframe is special subframe, and this subframe has comprised downlink transfer part, protection interval and uplink part.For example, when TDD uplink-downlink configuration is designated 1, in 1: one radio frames of TDD uplink-downlink configuration, the 0th, 4,5,9 work song frames are descending sub frame; The 1st, 6 work song frames are special subframe; The 2nd, 3,7,8 work song frames are sub-frame of uplink.
Existing uplink-downlink configuration list in table 1:TD-LTE system
Table 1 can find out, downlink transfer accounts for the percentage of time from 40% to 90% of all transmission, and adopting this ascending-descending subframes ratio setting is mainly to consider in present multimedia service that downstream data traffic is conventionally more than upstream data service.
In current LTE technology, network side is by the TDD uplink-downlink configuration of system information block (SIB, System Information Block) 1 this community of information broadcast.Wherein, the transmission cycle of SIB1 is 80ms, and, in order to guarantee the correct reception of Cell Edge User, in a transmission cycle, can repeat 3 identical transmission.
In the prior art, except earthquake and typhoon warning system (Earthquake and Tsunami Warning System, ETWS) and business mobile phone warning service (Commercial Mobile Alert Service, CMAS), network side can only could change system information in specific radio frames.Fig. 1 is system information change schematic diagram in existing TD-LTE system, at n Broadcast Control Channel (Broadcast Control Channel, BCCH) the change cycle, be in BCCH change cycle (n), if being the represented system information of nicking, shade type in n+1 BCCH change cycle, change, becoming shade type is the represented system information of point-like, network side notifies certain system information of UE in the next BCCH change cycle, to change during need to changing the cycle at BCCH (n), indication UE is ready to the system information that starts to receive renewal in the next BCCH change cycle.Therefore,, when network side need to change system information, can only change the boundary in cycle at BCCH and change, and need to utilize in advance beep-page message to inform that UE system message will soon change in the next BCCH change cycle.But, in the meantime, due to uplink-downlink configuration change not in time, may cause the in fact unmatched situation of TDD ascending-descending subframes ratio of downlink business ratio and current use.For example, current area adopts TDD uplink-downlink configuration 4, and ascending-descending subframes ratio is 1:4, if in community, uplink service increases in certain time period, may cause uplink service because ascending resource postpones not, and cause part downlink resource idle, thereby cause downlink resource waste.
Summary of the invention
Problem for not adjusting flexibly the TDD uplink-downlink configuration of using Yi Ge community, the invention provides a kind of renewal of TDD uplink-downlink configuration, Notification Method and the device of TDD reconfiguration information, at least to address the above problem.
According to an aspect of the present invention, provide the update method of a kind of time division duplex (TDD) uplink-downlink configuration, having comprised: user equipment (UE) has received TDD reconfiguration information at each TDD reconfiguration information transmission place on opportunity; If described UE reshuffles at current TDD the TDD reconfiguration information that receives renewal in the cycle, described UE brings into use the indicated TDD uplink-downlink configuration of TDD reconfiguration information of described renewal from the next TDD cycle of reshuffling; If described UE reshuffles at current TDD the TDD reconfiguration information that does not receive renewal in the cycle, described UE continues the TDD uplink-downlink configuration of using the current TDD cycle of reshuffling to use in next TDD reshuffles the cycle.
Preferably, the minimum interval that the TDD uplink-downlink configuration that is TDD system of the described TDD cycle of reshuffling changes.
Preferably, described TDD reconfiguration information is carried by one of following message: system information block type 1SIB1 message; System information block SIB message for described TDD reconfiguration information definition.
Preferably, when described TDD reconfiguration information is carried on described SIB1 message, described TDD reconfiguration information transmission opportunity is the opportunity that described SIB1 message sends.
Preferably, when described TDD reconfiguration information is carried on the SIB message into the definition of described TDD reconfiguration information, the opportunity that the SIB message that described TDD reconfiguration information transmission opportunity is described definition sends.
Preferably, described method also comprises: described UE receives the beep-page message from network side, wherein, comprises the indication whether system information changes in described beep-page message; Whether the other system message according to described beep-page message judgement except described TDD reconfiguration information changes, and wherein, described UE is current in Idle state and/or connected state.
Preferably, described method also comprises: when the system message value label of described UE storage is different with system message value label in the SIB1 message receiving, described UE definite except Master Information Block MIB, SIB1, SIB10, SIB11, SIB12 and the other system information of carrying the SIB message of described TDD reconfiguration information invalid.
Preferably, described method also comprises: described UE one of in the following manner obtains the indication parameter that described TDD reshuffles the cycle: described UE obtains the indication parameter that described TDD reshuffles the cycle from described TDD reconfiguration information; Described UE obtains the indication parameter that described TDD reshuffles the cycle from the beep-page message receiving; Described UE obtains the indication parameter that described TDD reshuffles the cycle from the signaling of downlink dedicated control channel DL-DCCH logic channel.
Preferably, described TDD reconfiguration information comprises one of following: TDD uplink-downlink configuration sign; The uplink-downlink configuration of all subframes in a radio frames.
Preferably, described TDD reconfiguration information also comprises one of following: TDD reshuffles the cycle; TDD reshuffles cycle and deviant.
Preferably, at UE, before each TDD reconfiguration information transmission place on opportunity receives TDD reconfiguration information, described method also comprises: described UE, when reporting UE ability to network side, reports described UE to support that TDD reshuffles function simultaneously.
Preferably, at UE, before each TDD reconfiguration information transmission place on opportunity receives TDD reconfiguration information, described method also comprises: described network side sends and opens information to described UE, controls described UE and opens described TDD and reshuffle function.
Preferably, described method also comprises: described network side sends pass information to described UE, controls described UE and closes described TDD and reshuffle function.
According to a further aspect of the invention, provide a kind of updating device of TDD uplink-downlink configuration, be positioned at subscriber equipment, having comprised: receiver module, for receiving TDD reconfiguration information at each TDD reconfiguration information transmission place on opportunity; Judge module, for judging that described receiver module reshuffles at current TDD whether the TDD reconfiguration information receiving in the cycle is renewal; Executive Module, for reshuffling when receiving TDD reconfiguration information in the cycle and having renewal at current TDD at described receiver module, from the next TDD cycle of reshuffling, bring into use the indicated TDD uplink-downlink configuration of TDD reconfiguration information of described renewal, and reshuffle when receiving TDD reconfiguration information in the cycle and not upgrading at current TDD at described receiver module, in reshuffling the cycle, continues next TDD the TDD uplink-downlink configuration of using the current TDD cycle of reshuffling to use.
Preferably, the minimum interval that the TDD uplink-downlink configuration that is TDD system of the described TDD cycle of reshuffling changes.
Preferably, described TDD reconfiguration information is carried by one of following message: system information block type 1SIB1 message; SIB message for described TDD reconfiguration information definition.
Preferably, described receiver module also, for receiving the beep-page message from network side, wherein, comprises the indication whether system information changes in described beep-page message; Described judge module is also for according to described beep-page message judgement, whether the other system message except described TDD reconfiguration information changes.
Preferably, described device also comprises: acquisition module, for one of in the following manner obtaining the indication parameter that described TDD reshuffles the cycle: obtain from described TDD reconfiguration information the indication parameter that described TDD reshuffles the cycle; From the beep-page message receiving, obtain the indication parameter that described TDD reshuffles the cycle; From the signaling of downlink dedicated control channel DL-DCCH logic channel, obtain the indication parameter that described TDD reshuffles the cycle.
Preferably, described device also comprises: reporting module for when reporting UE ability to network side, reports described UE to support that TDD reshuffles function simultaneously.
Preferably, described device also comprises: control module, for the information that opens or closes issuing according to network side, the TDD that opens or close described UE reshuffles function.
By the present invention, UE can receive TDD reconfiguration information opportunity in the transmission of TDD reconfiguration information, and whether there is the judgement of renewal to reshuffle at next TDD the configuration up and down of using in the cycle according to the reconfiguration information receiving, rather than the boundary that is limited to the BCCH change cycle changes uplink-downlink configuration, thereby can realize the dynamic-configuration of TDD, improve the frequency that TDD uplink-downlink configuration changes, and then avoided TDD uplink-downlink configuration not mate with current up-downgoing traffic carrying capacity and cause the problem of traffic delay and/or the wasting of resources.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of system information change in existing TD-LTE system;
Fig. 2 is according to the flow chart of the update method of the TDD uplink-downlink configuration of the embodiment of the present invention one;
Fig. 3 is according to the structural representation of the updating device of the TDD uplink-downlink configuration of the embodiment of the present invention two;
Fig. 4 is according to the structural representation of the updating device of the TDD uplink-downlink configuration of the preferred implementation of the embodiment of the present invention two;
Fig. 5 is according to the structural representation of the updating device of the TDD uplink-downlink configuration of another preferred implementation of the embodiment of the present invention two;
Fig. 6 is according to the structural representation of the updating device of the TDD uplink-downlink configuration of the another preferred implementation of the embodiment of the present invention two;
Fig. 7 is the flow chart upgrading according to the TDD uplink-downlink configuration of the embodiment of the present invention three;
Fig. 8 is the flow chart upgrading according to the TDD uplink-downlink configuration of the embodiment of the present invention four;
Fig. 9 is the flow chart upgrading according to the TDD uplink-downlink configuration of the embodiment of the present invention five;
Figure 10 is the flow chart upgrading according to the TDD uplink-downlink configuration of the embodiment of the present invention six.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
Embodiment mono-
Fig. 2 is that as shown in Figure 2, the method mainly comprises the following steps according to the flow chart of the update method of the TDD uplink-downlink configuration of the embodiment of the present invention:
Step S202, UE receive TDD reconfiguration information at each TDD reconfiguration information transmission place on opportunity.
In a preferred implementation of the embodiment of the present invention, described TDD reconfiguration information can be utilized system information block type 1(System Information Block Type 1, SIB1) message bearing, now TDD reconfiguration information transmission is the opportunity that SIB1 message sends opportunity.
Or, in another preferred implementation of the embodiment of the present invention, described TDD reconfiguration information is also utilized new system information block (SIB, System Information Block) message (being the SIB message of TDD reconfiguration information definition) carrying, be the opportunity that new SIB message sends the opportunity that now TDD reconfiguration information sends.
When the new SIB message bearing of described TDD reconfiguration information utilization or SIB1 message bearing, new SIB message or SIB1 message can change repeatedly within a BCCH change cycle, and new SIB message or SIB1 message can send and change repeatedly within a BCCH change cycle.
In embodiments of the present invention, because UE monitors and attempt receiving the SIB message of carrying TDD reconfiguration information opportunity in each TDD reconfiguration information transmission, by the TDD reconfiguration information receiving, UE can judge whether TDD reconfiguration information changes, therefore, in embodiments of the present invention, whether network side does not need to notify UE:TDD reconfiguration information to change by beep-page message.Therefore, in a preferred implementation of the embodiment of the present invention, the change of beep-page message other system message except TDD reconfiguration information for the UE notice in Idle state and/or connected state.In this preferred implementation, UE is when receiving beep-page message, and the indication whether changing according to the system information comprising in beep-page message, judges whether the other system message except TDD reconfiguration information changes.
In the prior art, except Master Information Block (Master Information Block, when MIB), the other system information outside SIB1, SIB10, SIB11 and SIB12 message changes, system information value label (SystemInfoValueTag) in SIB1 message also can correspondingly change, add up, for example, in TD-LTE system, this value has 32.In order to guarantee that some UE that departs from community covering checks that after getting back to community whether this cell system information of oneself storing is effective, whether this value that UE can oneself store by the SystemInfoValueTag contrast of reading in SIB1 message is identical, if different, read system information again; If identical, and the system information of storage is not over 3 hours, thinks that the system message of storage is still effective.Therefore in three hours, the SystemInfoValueTag in SIB1 can not have repetition, and the other system information in 3 hours except MIB, SIB1, SIB10, SIB11, SIB12 changes 31 times at most.
And in embodiments of the present invention, because the change number of times of TDD reconfiguration information is unrestricted, therefore, the change of TDD reconfiguration information can not cause system message value label to change yet, therefore, when the new SIB message bearing of described TDD reconfiguration information utilization, in a preferred implementation of the embodiment of the present invention, when the system message value label (SystemInfoValueTag) of UE storage is during from different in SIB1 message, UE thinks except MIB, SIB1, SIB10, SIB11, other system information outside the SIB message of SIB12 and carrying TDD reconfiguration information is invalid.
Step S204, judge that UE reshuffles current the TDD reconfiguration information of whether receiving renewal in the cycle, if UE while reshuffling the TDD reconfiguration information of receiving renewal in the cycle, forwards step S206 current to; If UE while reshuffling the TDD reconfiguration information of not receiving renewal in the cycle, forwards step S208 current to.
In embodiments of the present invention, the TDD cycle of reshuffling is that the ，Gai minimum interval, minimum interval that the TDD uplink-downlink configuration of TDD system changes is generally less than the BCCH change cycle.
In a preferred implementation of the embodiment of the present invention, UE one of can be in the following manner obtains the indication parameter that TDD reshuffles the cycle:
(1) from described TDD reconfiguration information, obtain the indication parameter that described TDD reshuffles the cycle;
(2) from the beep-page message receiving, obtain the indication parameter that described TDD reshuffles the cycle;
(3) from the signaling of downlink dedicated control channel (DL-DCCH) logic channel, obtain the indication parameter that described TDD reshuffles the cycle.
In a preferred implementation of the embodiment of the present invention, described TDD reconfiguration information comprises: TDD up/down row configuration identifier, for example, 7 kinds of uplink-downlink configuration signs in above-mentioned table 1; Or the configuration of the up/down row of all subframes, adopts in this way in a radio frames, uplink-downlink configuration can be not limited to 7 kinds of uplink-downlink configuration in table 1, and network side can define new uplink-downlink configuration.
Preferably, described TDD reconfiguration information can also comprise one of following:
(1) TDD reshuffles the cycle, and now TDD reshuffles SFN value that the border in cycle is radio frames TDD is reshuffled to cycle modulo operation is that result is the original position of 0 radio frames;
(2) TDD reshuffles cycle and deviant, now TDD reshuffles the SFN value that the border in cycle is radio frames and TDD is reshuffled to the original position of the radio frames that cycle modulo operation result is deviant, or now TDD reshuffles ten times of SFN value that the border in cycle is radio frames and adds original position subframe numbers and that TDD is reshuffled to the subframe that the described subframe numbers of the radio frames that cycle modulo operation result is deviant is corresponding.
Step S206, UE brings into use the indicated sub-frame configuration (also referred to as TDD uplink-downlink configuration) of TDD reconfiguration information of the renewal receiving from the next TDD cycle of reshuffling.
Step S208, UE continues the sub-frame configuration of using the current TDD cycle of reshuffling to use in next TDD reshuffles the cycle.
In a preferred implementation of the embodiment of the present invention, UE can, when reporting UE ability to network side, report described UE to support that TDD reshuffles function simultaneously.
In a preferred implementation of the embodiment of the present invention, network side can be controlled UE unlatching or close TDD and reshuffle function by send ON/OFF information to UE.
The said method providing by the embodiment of the present invention, UE can receive TDD reconfiguration information opportunity in the transmission of TDD reconfiguration information, and whether there is the judgement of renewal to reshuffle at next TDD the configuration up and down of using in the cycle according to the reconfiguration information receiving, rather than the boundary that is limited to the BCCH change cycle changes uplink-downlink configuration, thereby can realize the dynamic-configuration of TDD, improve the frequency that TDD uplink-downlink configuration changes, and then avoided TDD uplink-downlink configuration not mate with current up-downgoing traffic carrying capacity and caused the problem of traffic delay and/or the wasting of resources, and, due to network side can in TDD reconfiguration information, indicate one wireless in the uplink-downlink configuration of all subframes, thereby can adopt uplink-downlink configuration flexibly, and be not limited only to 7 kinds of uplink-downlink configuration shown in table 1.
Embodiment bis-
The present embodiment provides a kind of updating device of TDD uplink-downlink configuration, and this device is positioned at subscriber equipment, can be for realizing the method described in embodiment mono-.
Fig. 3 is according to the updating device of the TDD uplink-downlink configuration of the embodiment of the present invention, and as shown in Figure 3, this device comprises: receiver module 10, for receiving TDD reconfiguration information at each TDD reconfiguration information transmission place on opportunity; Judge module 20, with receiver module 10 coupling, for judging that receiver module 10 reshuffles at current TDD whether the TDD reconfiguration information receiving in the cycle is renewal; Executive Module 30, with judge module 20 couplings, for reshuffling when receiving TDD reconfiguration information in the cycle and having renewal at current TDD at receiver module 10, from the next TDD cycle of reshuffling, bring into use the indicated TDD uplink-downlink configuration of TDD reconfiguration information of described renewal, and reshuffle when receiving TDD reconfiguration information in the cycle and not upgrading at current TDD at receiver module 10, in reshuffling the cycle, continues next TDD the TDD uplink-downlink configuration of using the current TDD cycle of reshuffling to use.
Preferably, in the present embodiment, the TDD cycle of reshuffling is the minimum interval that the TDD uplink-downlink configuration of TDD system changes, and in the preferred implementation of the embodiment of the present invention, the TDD cycle of reshuffling is less than the BCCH change cycle.
In a preferred implementation of the embodiment of the present invention, described TDD reconfiguration information can be utilized system information block type 1(System Information Block Type 1, SIB1) message bearing, now TDD reconfiguration information transmission is the opportunity that SIB1 message sends opportunity.
Or, in another preferred implementation of the embodiment of the present invention, described TDD reconfiguration information is also utilized new system information block (SIB, System Information Block) message (being the SIB message of TDD reconfiguration information definition) carrying, be the opportunity that new SIB message sends the opportunity that now TDD reconfiguration information sends.
When the new SIB message bearing of described TDD reconfiguration information utilization or SIB1 message bearing, new SIB message or SIB1 message can change repeatedly within a BCCH change cycle, and new SIB message or SIB1 message can send and change repeatedly within a BCCH change cycle.
In embodiments of the present invention, because UE monitors and attempt receiving the SIB message of carrying TDD reconfiguration information opportunity in each TDD reconfiguration information transmission, by the TDD reconfiguration information receiving, UE can judge whether TDD reconfiguration information changes, therefore, in embodiments of the present invention, whether network side does not need to notify UE:TDD reconfiguration information to change by beep-page message.Therefore,, in a preferred implementation of the embodiment of the present invention, receiver module 10 also, for receiving the beep-page message from network side, wherein, comprises the indication whether system information changes in described beep-page message; Judge module 20 is also for according to described beep-page message judgement, whether the other system message except described TDD reconfiguration information changes.
In embodiments of the present invention, because the change number of times of TDD reconfiguration information is unrestricted, therefore, the change of TDD reconfiguration information can not cause system message value label to change yet, therefore, when the new SIB message bearing of described TDD reconfiguration information utilization, in a preferred implementation of the embodiment of the present invention, receiver module 10 is also for receiving SIB1 message, and, when the system message value label (SystemInfoValueTag) of UE storage is when receiving different in SIB1 message, judge module 10 is also for determining except MIB, SIB1, SIB10, SIB11, other system information outside the SIB message of SIB12 and carrying TDD reconfiguration information is invalid.
In a preferred implementation of the embodiment of the present invention, as shown in Figure 4, this device can also comprise: acquisition module 40, for obtaining one of in the following manner the indication parameter that described TDD reshuffles the cycle:
(1) from described TDD reconfiguration information, obtain the indication parameter that described TDD reshuffles the cycle;
(2) from the beep-page message receiving, obtain the indication parameter that described TDD reshuffles the cycle;
(3) from the signaling of downlink dedicated control channel (DL-DCCH) logic channel, obtain the indication parameter that described TDD reshuffles the cycle.
In a preferred implementation of the embodiment of the present invention, as shown in Figure 5, this device can also comprise: reporting module 50 for when reporting UE ability to network side, reports described UE to support that TDD reshuffles function simultaneously.
In another preferred implementation of the embodiment of the present invention, as shown in Figure 6, this device can also comprise: control module 60, for the information that opens or closes issuing according to network side, the TDD that opens or close UE reshuffles function.Thereby whether network side can when need UE to carry out TDD to reshuffle function, be controlled UE and open or close TDD and reshuffle function.
In the preferred implementation of the embodiment of the present invention, the information of carrying in TDD reconfiguration information can, as described in embodiment mono-, specifically repeat no more.
Embodiment tri-
Fig. 7 is the flow chart that in the present embodiment, TDD uplink-downlink configuration is upgraded, and as shown in Figure 7, in the present embodiment, UE carries out the renewal of TDD uplink-downlink configuration and mainly comprises the following steps:
Step S701, initialization procedure.
In the present embodiment, TDD reconfiguration information adopts SIB1 message to carry, when in existing protocol, the SIB1 message of regulation within n BCCH change cycle changed than n-1 change cycle, within n-1 change cycle, network side need to notify UE in the next BCCH change cycle, to have the change of system information with beep-page message.And in the present embodiment, when the SIB1 message alteration causing due to TDD reconfiguration information, and then while causing there is changing system information in n BCCH change, within n-1 change cycle, do not use beep-page message notice UE, i.e. the only change of the other system message except TDD reconfiguration information to the UE notice in Idle state and/or connected state of beep-page message.
In the present embodiment, calculate TDD reshuffle the cycle parameter can for following any one:
(1) TDD reshuffles the cycle
Now TDD reshuffles SFN value that the border in cycle is radio frames TDD is reshuffled to cycle modulo operation is that result is the original position of 0 radio frames.For example, when the TDD cycle of reshuffling that network side provides, be 200, if the SFN mod200=0 of radio frames, this radio frames is the border that TDD reshuffles the cycle, if SFN is 0,200, the 0th work song frame section start of those radio frames of 400,600 grades is all the border that TDD reshuffles the cycle.
(2) TDD reshuffles cycle and deviant
Now TDD reshuffles the SFN value that the border in cycle is radio frames and TDD is reshuffled to the original position of the radio frames that cycle modulo operation result is deviant, or now TDD reshuffles SFN value and the subframe numbers that the border in cycle is radio frames and meets formula Yi position.
(SFN*10+ subframe numbers) mod cycle=deviant (formula one)
For example, when the cycle, be 200, deviant is 5 o'clock, if the SFN mod 200=5 of radio frames, this radio frames is the border that TDD reshuffles the cycle, if SFN is 5, the 0th work song frame section start of those radio frames of 205,405,605 grades is all the border that TDD reshuffles the cycle.
For another example, when the cycle, be 2000, deviant is 5 o'clock, that subframe that meets the radio frames of (SFN*10+ subframe numbers) mod 2000=5 border of configuration cycle of attaching most importance to, if SFN is 0,200, the section start of the 5th work song frame of those radio frames of 400,600 grades is all the border that TDD reshuffles the cycle.
And at the present embodiment, UE can be obtained and be calculated the parameter (be that above-mentioned TDD reshuffles the cycle, or TDD reshuffling cycle and deviant) that TDD reshuffles the cycle by following any one mode:
(1), TDD reshuffles the parameter in cycle and is included in TDD reconfiguration information, UE obtains the parameter that TDD reshuffles the cycle from TDD reconfiguration information.TDD reconfiguration information is by SIB1 message bearing, UE in Idle state or connected state must read SIB1 message, thereby can guarantee that UE is from Idle state enters connected state, just can use at once TDD configuration accurately, can not cause because the unclear current TDD of UE reshuffles cycle information and cause UE cannot correctly judge the problem of which kind of sub-frame configuration of current use.
(2), TDD reshuffles the parameter in cycle and is included in beep-page message, UE obtains the parameter that TDD reshuffles the cycle from beep-page message.In order to guarantee that UE mono-receives the parameter information that the described TDD that utilizes beep-page message carrying reshuffles the cycle surely, network side must be at all paging frames (Paging Frame, PF) all paging occasion (Paging Occasion, PO) all send described information.So also can guarantee that UE in discontinuous reception (Discontinuous Reception, DRX) state can not cause missing because of temporary transient dormancy receives the parameter information that TDD reshuffles the cycle.
(3), TDD reshuffles the parameter in cycle and is included in DL-DCCH(downlink dedicated control channel) in the signaling of logic channel, UE obtains the parameter that TDD reshuffles the cycle from the signaling of DL-DCCH logic channel.The parameter information that TDD reshuffles the cycle be included in service condition in the signaling of DL-DCCH logic channel be UE in connected state, the UE in Idle state cannot receive this information in other words.Adopt advantage in this way and be to save signaling consumption, only need to have the user who needs to send the parameter information that TDD reshuffles the cycle to minority.UE also can read TDD reconfiguration information when Idle state, reshuffles after the parameter information in cycle receiving TDD, utilizes the TDD reconfiguration information oneself successfully having received, and after of short duration processing delay, can use correct sub-frame configuration.
Step S702, UE receive a TDD and reshuffle all SIB1 message in the cycle, and judge whether the TDD reconfiguration information of renewal.
Need to illustrate, UE in the present embodiment refers to have the UE that TDD reshuffles function.TDD reconfiguration information is by SIB1 message bearing, and the transmission of each SIB1 message is the transmission opportunity of TDD reconfiguration information opportunity.When UE reads SIB1 message, in the SIB1 message that needs judgement to receive, whether contain TDD reconfiguration information.The transmission cycle of SIB1 message is 80ms, if the TDD cycle of reshuffling is while being greater than 80ms, just likely at same TDD, reshuffle the transmission that has twice above SIB1 message in the cycle, if network side is considered owing to saving signaling consumption, in some SIB1, do not carry TDD reconfiguration information, UE still can correctly receive TDD reconfiguration information, in some SIB1 message, can select not carry TDD reconfiguration information.
If contain TDD reconfiguration information in the SIB1 message that UE receives, the parameter information that UE also needs to reshuffle the cycle in conjunction with TDD determines on TDD reconfiguration information in current TDD reshuffles the cycle whether a TDD cycle of reshuffling upgrades to some extent.
According to TDD in step S701, reshuffle the transmission means of the parameter in cycle, if while adopting the signaling of DL-DCCH logic channel to carry, the UE of Idle state may reshuffle the parameter information in cycle and cannot judge whether at this TDD, reshuffle the TDD reconfiguration information that receives in the cycle upgraded to some extent than the last TDD cycle of reshuffling owing to lacking TDD.But in this case, network side can be processed according to traditional UE for the UE of Idle state, make the UE of these Idle state use the TDD of traditional UE to configure, and these traditional UE uses is the sub-frame configuration providing in information element (Information Element, IE) the TDD configuration (tdd-Config) in SIB1.Once the UE of these Idle state receives the parameter information that TDD reshuffles the cycle after entering connected state, can be rapidly according to the TDD reconfiguration information having received, judge that current TDD reshuffles and use which kind of sub-frame configuration, and whether this TDD reshuffles the TDD reconfiguration information that receives in the cycle and upgrade to some extent than the last TDD cycle of reshuffling.
In addition, in existing protocol, stipulate, if SIB1 message changes, need to use in advance beep-page message to notify user, but the frequency of reshuffling cyclomorphosis due to TDD is very fast, and the number of times changing is more, in order not affect the operation of traditional UE, in the present embodiment, beep-page message is only notified the change of the other system message except TDD reconfiguration information to the user in Idle state and/or connected state.
Step S703, UE are used corresponding sub-frame configuration in the next TDD cycle of reshuffling according to judged result.
According to the judgement in step S702, if this TDD reshuffle the TDD reconfiguration information that receives in the cycle on a TDD cycle of reshuffling upgrade to some extent, UE brings into use the indicated sub-frame configuration of TDD reconfiguration information of the renewal receiving from the next TDD cycle of reshuffling;
This TDD reshuffle the TDD reconfiguration information that receives in the cycle on TDD to reshuffle the cycle identical, UE continues to use this TDD to reshuffle the sub-frame configuration the cycle from the next TDD cycle of reshuffling.
Embodiment tetra-
Fig. 8 is the flow chart that in the present embodiment, TDD uplink-downlink configuration is upgraded, and as shown in Figure 8, in the present embodiment, UE carries out the renewal of TDD uplink-downlink configuration and mainly comprises the following steps:
Step S701, initialization procedure
This step is identical with step S701 in embodiment tri-, repeats no more here.
Step S702, UE receive a TDD and reshuffle all new SIB message of the carrying TDD reconfiguration information in the cycle, and judge whether the TDD reconfiguration message of renewal.
In the present embodiment, TDD reconfiguration information is by the SIB message bearing increasing newly, and the transmission of this newly-increased SIB message is the transmission opportunity of TDD reconfiguration information opportunity.Utilize cycle and the TDD cycle of reshuffling that newly-increased SIB message can choose reasonable transmission to match.In LTE agreement, stipulate, other SIB message except MIB and SIB1 all will be mapped in system information (System Information, SI) message to be transmitted, and mapping relations provide in SIB1 message.Also can in agreement, stipulate in addition the time-frequency domain resources of the newly-increased SIB message of carrying TDD reconfiguration information, thereby needn't in SIB1, provide mapping relations, be in order to guarantee that newly-increased SIB message can not produce conflicting in time domain with original SIB message like this.
In addition, in existing protocol, stipulate, when other SIB message except MIB, SIB1, SIB10, SIB11 and SIB12 change, the label value systemInfoValueTag in corresponding SIB wants corresponding change.But in the present embodiment, more for change frequency, and change the newly-increased SIB message of carrying faster TDD reconfiguration information, its variation is not embodied in systemInfoValueTag, while increasing SIB message alteration newly, systemInfoValueTag value may remain unchanged.When the system message value label (SystemInfoValueTag) of UE storage is during from different in SIB1 message, UE thinks except MIB, SIB1, SIB10, SIB11, the other system information outside the SIB message of SIB12 and carrying TDD reconfiguration information is invalid.
Step S803, UE are used corresponding sub-frame configuration in the next TDD cycle of reshuffling according to judged result.
This step is identical with step S703 in embodiment tri-, repeats no more here.
Embodiment five
Fig. 9 is the flow chart that in the present embodiment, TDD uplink-downlink configuration is upgraded, and as shown in Figure 9, in the present embodiment, UE carries out the renewal of TDD uplink-downlink configuration and mainly comprises the following steps:
Step S901, UE report oneself possesses the ability of supporting dynamic TDD configuration
In the present embodiment, when UE can access network by Non-Access Stratum (Non Access Stratum, NAS) message informs that network oneself possesses the ability of supporting TDD configuration, and/or when receive that network side sends ask for the signaling of UE ability time, the ability that reports own support TDD to reshuffle to network side.
The TDD that step S902, network side are reshuffled function opening information unlatching UE to UE transmission TDD reshuffles function.
In the present embodiment, network side determines that according to own ability the TDD that opens UE reshuffles function, and to UE transmission, TDD reshuffles function opening information, and the TDD that is used for opening UE reshuffles function.
Because some network may itself not support that TDD reshuffles function, therefore, UE may continue monitor channel in order to receive TDD reconfiguration information, thereby may cause the energy consumption of UE larger.Therefore, in the present embodiment, can to UE, whether open TDD by network side and reshuffle function and control, if network side does not send the indication of opening to UE, UE need not receive TDD reconfiguration information.Network side also can be closed its TDD to described UE at the selecting factors such as capacity of follow-up basis oneself and be reshuffled function, only need send the indication of closing to UE.The indication of described On/Off can be carried by system information or RRC dedicated signaling.
Step S903, UE receive TDD reconfiguration information.
This step describes in detail in embodiment tri-and embodiment tetra-, and step is the description that in above-mentioned all embodiment, UE receives TDD reconfiguration information here, repeats no more here.
Step S904, UE are used the sub-frame configuration of indicating in TDD reconfiguration information.
This step is identical with the step S703 step in embodiment tri-, repeats no more.
Embodiment six
Figure 10 is the flow chart that in the present embodiment, TDD uplink-downlink configuration is upgraded, and as shown in figure 10, in the present embodiment, UE carries out the renewal of TDD uplink-downlink configuration and mainly comprises the following steps:
Step S1001, UE report possesses the ability of supporting that TDD reshuffles.
This step is identical with step S901, repeats no more.
Step S1002, UE receive TDD reconfiguration information.
This step is identical with step S903, repeats no more.
Step S1003, UE are used the sub-frame configuration of indicating in TDD reconfiguration information.
This step is identical with step S703, repeats no more.
Step S1004, network side send TDD to UE and reshuffle the TDD that function closing information is used for closing UE and reshuffle function.
Network side determines that according to own ability the TDD that closes UE reshuffles function, and to UE transmission, TDD reshuffles function closing information, and the TDD that is used for closing UE reshuffles function.
If an advantage using TDD to reshuffle is in order to improve the throughput of network. UE continues to receive TDD reconfiguration information, just can guarantee that UE enters uses most suitable sub-frame configuration at once when connected state is communicated by letter with network side, this has larger benefit for promoting network throughput.Therefore after UE access network, just attempt receiving TDD reconfiguration information, until receive the indication of closing that network side sends, UE does not just reattempt and receives TDD reconfiguration information.If the TDD that follow-up network side need to be opened UE according to the ability of oneself reshuffles function, only need send and open indication to UE.The indication of described On/Off can be carried by system information or RRC dedicated signaling.
Step S1005, UE do not re-use the sub-frame configuration in TDD reconfiguration information, no longer receive TDD reconfiguration information.
When UE receives closing after indication of network side transmission, by the sub-frame configuration not re-using in the TDD reconfiguration information having received, then use TDD up/down row configuration indicated in SIB1, use identical TDD configuration with the traditional UE that does not possess TDD and reshuffle function.UE also no longer receives TDD reconfiguration information.
From above description, can find out, by above-mentioned one or more embodiment, UE can be predetermined the transmission of TDD reconfiguration information receive TDD reconfiguration information opportunity, and whether there is the judgement of renewal to reshuffle at next TDD the configuration up and down of using in the cycle according to the reconfiguration information receiving, rather than the boundary that is limited to the BCCH change cycle changes uplink-downlink configuration, thereby can realize the dynamic-configuration of TDD, improve the frequency that TDD uplink-downlink configuration changes, and then avoided TDD uplink-downlink configuration not mate with current up-downgoing traffic carrying capacity and caused the problem of traffic delay and/or the wasting of resources, and, due to network side can in TDD reconfiguration information, indicate one wireless in the uplink-downlink configuration of all subframes, thereby can adopt uplink-downlink configuration flexibly, and be not limited only to 7 kinds of uplink-downlink configuration shown in table 1.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (20)
1. a update method for TDD uplink-downlink configuration, is characterized in that, comprising:
User equipment (UE) receives TDD reconfiguration information at each TDD reconfiguration information transmission place on opportunity;
If described UE reshuffles at current TDD the TDD reconfiguration information that receives renewal in the cycle, described UE brings into use the indicated TDD uplink-downlink configuration of TDD reconfiguration information of described renewal from the next TDD cycle of reshuffling;
If described UE reshuffles at current TDD the TDD reconfiguration information that does not receive renewal in the cycle, described UE continues the TDD uplink-downlink configuration of using the current TDD cycle of reshuffling to use in next TDD reshuffles the cycle.
2. method according to claim 1, is characterized in that, the minimum interval that the TDD uplink-downlink configuration that the described TDD cycle of reshuffling is TDD system changes.
3. method according to claim 1, is characterized in that, described TDD reconfiguration information is carried by one of following message:
System information block type 1SIB1 message;
System information block SIB message for described TDD reconfiguration information definition.
4. method according to claim 3, is characterized in that, when described TDD reconfiguration information is carried on described SIB1 message, described TDD reconfiguration information transmission opportunity is the opportunity that described SIB1 message sends.
5. method according to claim 3, is characterized in that, when described TDD reconfiguration information is carried on the SIB message into the definition of described TDD reconfiguration information, and the opportunity that the SIB message that described TDD reconfiguration information transmission opportunity is described definition sends.
6. according to the method described in any one in claim 1 to 5, it is characterized in that, described method also comprises:
Described UE receives the beep-page message from network side, wherein, comprises the indication whether system information changes in described beep-page message;
Whether the other system message according to described beep-page message judgement except described TDD reconfiguration information changes, and wherein, described UE is current in Idle state and/or connected state.
7. according to the method described in any one in claim 1 to 5, it is characterized in that, described method also comprises: when the system message value label of described UE storage is different with system message value label in the SIB1 message receiving, described UE definite except Master Information Block MIB, SIB1, SIB10, SIB11, SIB12 and the other system information of carrying the SIB message of described TDD reconfiguration information invalid.
8. according to the method described in any one in claim 1 to 5, it is characterized in that, described method also comprises: described UE obtains one of in the following manner the indication parameter that described TDD reshuffles the cycle:
Described UE obtains the indication parameter that described TDD reshuffles the cycle from described TDD reconfiguration information;
Described UE obtains the indication parameter that described TDD reshuffles the cycle from the beep-page message receiving;
Described UE obtains the indication parameter that described TDD reshuffles the cycle from the signaling of downlink dedicated control channel DL-DCCH logic channel.
9. according to the method described in any one in claim 1 to 5, it is characterized in that, it is one of following that described TDD reconfiguration information comprises: TDD uplink-downlink configuration sign; The uplink-downlink configuration of all subframes in a radio frames.
10. method according to claim 9, is characterized in that, it is one of following that described TDD reconfiguration information also comprises:
TDD reshuffles the cycle;
TDD reshuffles cycle and deviant.
11. according to the method described in any one in claim 1 to 5, it is characterized in that, at user equipment (UE), before each TDD reconfiguration information transmission place on opportunity receives TDD reconfiguration information, described method also comprises:
Described UE, when reporting UE ability to network side, reports described UE to support that TDD reshuffles function simultaneously.
12. methods according to claim 11, is characterized in that, at user equipment (UE), before each TDD reconfiguration information transmission place on opportunity receives TDD reconfiguration information, described method also comprises:
Described network side sends and opens information to described UE, controls described UE and opens described TDD and reshuffle function.
13. methods according to claim 11, is characterized in that, described method also comprises: described network side sends pass information to described UE, control described UE and close described TDD and reshuffle function.
The updating device of 14. 1 kinds of TDD uplink-downlink configuration, is positioned at subscriber equipment, it is characterized in that, comprising:
Receiver module, for receiving TDD reconfiguration information at each TDD reconfiguration information transmission place on opportunity;
Judge module, for judging that described receiver module reshuffles at current TDD whether the TDD reconfiguration information receiving in the cycle is renewal;
Executive Module, for reshuffling when receiving TDD reconfiguration information in the cycle and having renewal at current TDD at described receiver module, from the next TDD cycle of reshuffling, bring into use the indicated TDD uplink-downlink configuration of TDD reconfiguration information of described renewal, and reshuffle when receiving TDD reconfiguration information in the cycle and not upgrading at current TDD at described receiver module, in reshuffling the cycle, continues next TDD the TDD uplink-downlink configuration of using the current TDD cycle of reshuffling to use.
15. devices according to claim 14, is characterized in that, the minimum interval that the TDD uplink-downlink configuration that the described TDD cycle of reshuffling is TDD system changes.
16. devices according to claim 14, is characterized in that, described TDD reconfiguration information is carried by one of following message:
System information block type 1SIB1 message;
SIB message for described TDD reconfiguration information definition.
17. according to claim 14 to the device described in any one in 16, it is characterized in that,
Described receiver module also, for receiving the beep-page message from network side, wherein, comprises the indication whether system information changes in described beep-page message;
Described judge module is also for according to described beep-page message judgement, whether the other system message except described TDD reconfiguration information changes.
18. according to claim 14 to the device described in any one in 16, it is characterized in that, described device also comprises:
Acquisition module, for obtaining one of in the following manner the indication parameter that described TDD reshuffles the cycle:
From described TDD reconfiguration information, obtain the indication parameter that described TDD reshuffles the cycle;
From the beep-page message receiving, obtain the indication parameter that described TDD reshuffles the cycle;
From the signaling of downlink dedicated control channel DL-DCCH logic channel, obtain the indication parameter that described TDD reshuffles the cycle.
19. according to claim 14 to the device described in any one in 16, it is characterized in that, described device also comprises:
Reporting module for when reporting UE ability to network side, reports described UE to support that TDD reshuffles function simultaneously.
20. according to claim 14 to the device described in any one in 16, it is characterized in that, described device also comprises:
Control module, for the information that opens or closes issuing according to network side, the TDD that opens or close described UE reshuffles function.
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| CN201210205222.8A CN103516498B (en) | 2012-06-20 | 2012-06-20 | The update method and device of TDD uplink-downlink configurations |
| PCT/CN2013/076112 WO2013189226A1 (en) | 2012-06-20 | 2013-05-22 | Tdd uplink and downlink configuration updating method and apparatus |
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