CN107682925A

CN107682925A - A kind of determination method and device of access time

Info

Publication number: CN107682925A
Application number: CN201610625902.3A
Authority: CN
Inventors: 赵丽; 梁靖; 张惠英; 房家奕
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-08-02
Filing date: 2016-08-02
Publication date: 2018-02-09
Anticipated expiration: 2036-08-02
Also published as: CN107682925B

Abstract

This application discloses the determination method and device of access time a kind of, when being mismatched with configuration cycle in the timing cycle, to provide corresponding solution.The method that the application provides includes：Determine direct frame number DFN and DFN subframe corresponding to current time；When it is determined that timing cycle and configuration cycle mismatch, the specific period for including multiple default frames that the least common multiple of the timing cycle and the configuration cycle obtain is determined the use of；Wherein, the configuration cycle, the duration and timing cycle phase of each default frame were same, and the specific period is identical with the initial time of the configuration cycle to send the cycle of presupposed information；Frame is preset according to corresponding to the specific period determines current time；Frame is preset according to corresponding to the DFN, the DFN subframes and current time, determines whether the DFN subframes are subframe for sending the presupposed information.

Description

A kind of determination method and device of access time

Technical field

The application is related to communication technical field, more particularly to the determination method and device of access time a kind of.

Background technology

In Long Term Evolution (Long Term Evolution, LTE) device-to-device (Device to Device, D2D), LTE network covering interior nodes (user equipment in LTE network covering) are according to evolved base station (Evolved NodeB, eNB) System Frame Number (System Frame Number, SFN) determine this node direct frame number (Direct Frame Number, DFN), by receiving, the physics of other nodes is straight-through to broadcast LTE network covering exterior node (user equipment outside LTE network covering) DFN in channel (Physical Sidelink Broadcast Channel, PSBCH), or this node generate according to local oscillator DFN.Further according to DFN, DFN subframe and synchronous sub-frame offset parameter, calculated by formula and determine synchronous subframe.Wherein, the DFN Subframe is current time subframe corresponding in frame corresponding to the DFN.Because DFN cycles 10240ms can be by the same of LTE D2D Step period 40ms is divided exactly.After 10240ms, synchronous subframe can be still used as according to the subframe that formula calculates.

And in LTE vehicles and any object (Vehicle-to-Everything, V2X), because vehicle node has directly The ability of GLONASS (global navigation satellite system, GNSS) signal is received, directly Obtaining the vehicle node of GNSS signal can be used as synchronisation source to send direct communication synchronizing signal (Sidelink Synchronisation Signal, SLSS) and synchronous configuration information.Vehicle node can directly calculate DFN, and in view of opening Sell, be not required to factor, the synchronizing cycles of car networking such as economize on electricity be set to 200ms., can not because 10240ms can not be divided exactly by 200ms The formula for reusing LTE D2D calculates the synchronous subframe of determination.Similarly such as semi-continuous scheduling (Semi-Persistent Scheduling, SPS) processing in, there is also the SPS cycles and the timing time cycle mismatch caused by can not correctly handle Business sends the problem of opportunity.

In LTE D2D, LTE network covering interior nodes reception system broadcast information system block of information (System Information Block, SIB) 18, obtain simultaneous bias instruction (syncOffsetIndicator).Cover exterior node according to Preconfiguration parameters syncOffsetIndicator1 or syncOffsetIndicator2 selection send SLSS subframe.

The SFN that LTE network covering interior nodes issue according to eNB, it is corresponding to obtain DFN, further according to phase of the subframe in the DFN To position, DFN sub-frame informations are obtained.

LTE network covers exterior node, if the PSBCH information that other nodes are sent can be received, if selecting the transmission section Point is reference synchronization UE, the DFN of this node can be set with reference to the DFN information in the PSBCH that UE is sent according to this, according to DFN Frame information sets the DFN subframes of this node.If the PSBCH information that any other node is sent can not be received, by this node root DFN and DFN subframes are calculated according to the local oscillator time.

Because LTE D2D synchronizing cycle is 40ms, according to the formula of the agreements of 3GPP TS 36.331：(10*DFN+ Subframe number) mod 40=syncOffsetIndicator formula one

, can be as LTE D2D synchronous subframe as long as meeting the DFN subframes of formula above.

DFN is the 10ms cycles in system, and the DFN subframes in system, i.e., the subframe number in formula are in DFN Subframe in corresponding frame.Whether the system subframe can be used as synchronous subframe, it is necessary to meet formula one.Such as DFN is 6, DFN Subframe is that 5, syncOffsetIndicator is configured to 25；(10*6+5) mod 40=25, meet formula one, so the system Subframe is synchronous subframe.It is that 6, syncOffsetIndicator is configured to 25 that if DFN, which is 6, DFN subframes,；(10*6+6)mod 40=26, formula one is unsatisfactory for, so the system subframe is not synchronous subframe.

As can be seen here, in LTE V2X, it is set to 200ms synchronizing cycle at present.As shown in figure 1, the DFN cycles are still 10240ms, because radio frames (radio frame, abbreviation RF) are 10ms, corresponding 1024 RF.Synchronizing cycle is 200ms, There is the transmission of corresponding synchronous subframe in synchronizing cycle, represent that the synchronous subframe in the synchronizing cycle is sent with 20 RF in Fig. 1 Situation.Can not be divided exactly by 200 due to 10240, it is assumed that the 1st DFN cycle since 0 subframe in synchronizing cycle, then first The last 40ms in DFN cycles, i.e. 4 RF need with 16 RF in next DFN cycles form one synchronizing cycle 20RF.So Second DFN cycle, skew synchronizing cycle 16RF could be corresponding with the synchronous subframe in first DFN cycle.If directly 40ms synchronizing cycle in formula one is changed to 200ms, it is assumed that syncOffsetIndicator 101, first DFN weeks Interim, UE calculates synchronous subframe position and is：DFN=10, subframe number=1；And in second DFN cycle, UE is pressed Calculating synchronous subframe position according to formula one is：DFN=10, subframe number=1, but the position is not same step Frame；Because 10240 can not be divided exactly by 200ms, in second DFN cycle, the frame of synchronization frame overall offset 16, synchronous subframe should be DFN=6 or DFN=26, subframe number=1 position.

In summary, prior art lacks corresponding solution when mismatching in timing cycle and synchronizing cycle, Therefore lead to not determine whether current time reaches synchronizing cycle, system reliability is poor.

The content of the invention

The embodiment of the present application provides the determination method and device of access time a kind of, to when the timing cycle When being mismatched with configuration cycle, provide corresponding solution, may thereby determine that DFN subframes corresponding to current time whether be For sending the subframe of presupposed information, system reliability is improved.

A kind of determination method for access time that the embodiment of the present application provides, including：

Direct frame number DFN and DFN subframe corresponding to current time is determined, the DFN subframes are that the current time exists Corresponding subframe in frame corresponding to the DFN；

When it is determined that timing cycle and configuration cycle mismatch, determine the use of the timing cycle matches somebody with somebody with described Put the specific period for including multiple default frames that the least common multiple in cycle obtains；Wherein, the configuration cycle is default to send In the cycle of information, the duration and timing cycle phase of each default frame are same, the specific period and the starting of the configuration cycle Moment is identical；

Frame is preset according to corresponding to the specific period determines current time；

According to corresponding to the DFN, the DFN subframes and current time preset frame, determine the DFN subframes whether be For sending the subframe of the presupposed information.

By the above method, direct frame number DFN and DFN subframe corresponding to current time is determined, when it is determined that timing When cycle mismatches with configuration cycle, the least common multiple for determining the use of the timing cycle and the configuration cycle obtains The specific period for including multiple default frames, wherein, the configuration cycle for send presupposed information cycle, each default frame Duration and timing cycle phase are same, and the specific period is identical with the initial time of the configuration cycle；According to the specific week Phase determines to preset frame corresponding to current time；Frame is preset according to corresponding to the DFN, the DFN subframes and current time, really Whether the fixed DFN subframes are subframe for sending the presupposed information, thus when the timing cycle with configuration cycle not During matching, corresponding solution is given, may thereby determine that whether DFN subframes corresponding to current time are pre- for sending If the subframe of information, improves system reliability.

It is preferred that presetting frame according to corresponding to the specific period determines current time, specifically include：

If current time can be obtained, using the current time and the deviation of default absolute reference time, and it is described Specific period, determine to preset frame corresponding to current time.

It is preferred that using the current time and the deviation of default absolute reference time, and the specific period, really Determine to preset frame corresponding to current time, specifically include：

Determine to preset frame corresponding to current time using equation below：

Wherein, VFN represents to preset the frame number of frame, UTC corresponding to current time_granularityRepresent world unified time UTC Time granularity, T_currentRepresent the current time, T_refThe absolute reference time is represented, Y represents the specific period, N_{DFN_subframe}The number of subframe included in frame corresponding to the DFN is represented, sysPeriod represents the timing cycle.

It is preferred that if current time can not be obtained, frame is preset according to corresponding to the specific period determines current time, Specifically include：

The physics sent by the system message of base station broadcast or another user equipment leads directly to broadcast channel message, it is determined that working as Frame is preset corresponding to the preceding time.

It is preferred that the configuration cycle is divided into synchronizing cycle and semi-continuous scheduling cycle；

The message, which includes presetting corresponding to synchronizing cycle, presets frame identical corresponding to frame and semi-continuous scheduling cycle Configured information, and the identical preset the information of frame；Or the message includes presetting the letter of frame corresponding to synchronizing cycle The information of frame is preset corresponding to breath and semi-continuous scheduling cycle.

It is preferred that described preset frame according to corresponding to the DFN, the DFN subframes and current time, it is determined that described Whether DFN subframes are subframe for sending the presupposed information, are specifically included：

When meeting below equation, it is the subframe for sending the presupposed information to determine the DFN subframes, is otherwise determined The DFN subframes are not the subframe for sending the presupposed information：

(a*VFN+10*DFN+subframe number) modcfgPeriod=OffsetIndicator

Wherein, a=sysPeriod mod cfgPeriod, sysPeriod represent the timing cycle, CfgPeriod represents the configuration cycle, and VFN represents to preset the frame number of frame, subframe corresponding to the current time Number represents the DFN subframes, and the subframe that OffsetIndicator represents to send presupposed information is relative to the configuration cycle Originate the skew number of sub-frames of subframe.

It is preferred that when the configuration cycle is 200ms, if meeting one of following equation, it is determined that the DFN subframes are For sending the subframe of the presupposed information, it is not the subframe for sending the presupposed information otherwise to determine the DFN subframes：

(10240*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

(40*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

Wherein, VFN represents to preset the frame number of frame corresponding to the current time, and subframe number represent the DFN Subframe, syncOffsetIndicator represent simultaneous bias instruction.

It is preferred that this method also includes：

When it is determined that the timing cycle matches with configuration cycle, by following equation determine the DFN subframes whether be For sending the subframe of the presupposed information：

(10*DFN+subframe number) mod cfgPeriod=OffsetIndicator

Wherein, subframe number represent the DFN subframes, and cfgPeriod represents the configuration cycle, OffsetIndicator represents that the subframe for sending presupposed information originates the skew subframe of subframe relative to the configuration cycle Number.

It is preferred that if current time can be obtained, DFN is determined by equation below：

Wherein, UTC_granularityRepresent world unified time UTC time granularity, T_currentThe current time is represented, T_refThe absolute reference time is represented, sysPeriod represents the timing cycle, N_{DFN_subframe}Represent described DFN pairs The number of the subframe included in the frame answered.

It is preferred that if current time can be obtained, DFN subframes are determined by equation below：

Wherein, DFN subframe represent DFN subframes, T_currentRepresent the current time, T_refRepresent the definitely ginseng Examine the time, N_{DFN_subframe}Represent the number of subframe included in frame corresponding to the DFN.

It is preferred that if current time can not be obtained, the system information sent by base station or another user equipment are sent out The physics sent leads directly to broadcast channel information, determines DFN and DFN subframes.

The determination method for another access time that the embodiment of the present application provides, including：

When it is determined that timing cycle and configuration cycle mismatch, if current time can be obtained, using it is described current when Between and the default absolute reference time deviation, determine whether the DFN subframes are subframe for sending presupposed information；Its In, the configuration cycle is the cycle for sending the presupposed information.

With it, determine direct frame number DFN and DFN subframe corresponding to current time；When it is determined that timing is all When phase and configuration cycle mismatch, if current time can be obtained, the current time and default absolute reference time are utilized Deviation, determine whether the DFN subframes are subframe for sending presupposed information；Wherein, the configuration cycle is described in transmission In the cycle of presupposed information, therefore, it this method give and mismatched when timing cycle and configuration cycle, and can obtain current Another corresponding solution during the time, so as to more quickly determine current time corresponding to DFN subframes whether be For sending the subframe of presupposed information, system reliability is improved.

It is preferred that using the current time and the deviation of default absolute reference time, whether the DFN subframes are determined For the subframe for sending presupposed information, specifically include：

When meeting following equation, it is the subframe for sending presupposed information to determine the DFN subframes, otherwise, it determines institute It is not the subframe for sending presupposed information to state DFN subframes：

Wherein, T_currentRepresent the current time, T_refThe absolute reference time is represented, described in cfgPeriod is represented Configuration cycle, OffsetIndicator represent that the subframe for sending presupposed information originates the inclined of subframe relative to the configuration cycle Move number of sub-frames.

A kind of information corresponding with the first method that above-mentioned the embodiment of the present application provides, that the embodiment of the present application provides The determining device of time is sent, including：

First module, for determining that direct frame number DFN and DFN subframe, the DFN subframes are institute corresponding to current time State current time subframe corresponding in frame corresponding to the DFN；

Second unit, for when it is determined that the timing cycle mismatches with configuration cycle, determining the use of the system and determining When cycle and the configuration cycle the obtained specific period for including multiple default frames of least common multiple；Wherein, the configuration Cycle for send presupposed information cycle, the duration and timing cycle phase of each default frame are same, the specific period with it is described The initial time of configuration cycle is identical；

Third unit, for presetting frame corresponding to determining current time according to the specific period；

Unit the 4th, for presetting frame according to corresponding to the DFN, the DFN subframes and current time, it is determined that described Whether DFN subframes are subframe for sending the presupposed information.

It is preferred that the third unit is specifically used for：

It is preferred that the third unit determines to preset frame corresponding to current time using equation below：

It is preferred that the third unit is specifically used for：

If current time can not be obtained, the physics sent by the system message of base station broadcast or another user equipment is led directly to Broadcast channel message, determine to preset frame corresponding to current time.

It is preferred that Unit the 4th is specifically used for：

(a*VFN+10*DFN+subframe number) mod cfgPeriod=OffsetIndicator

It is preferred that Unit the 4th is specifically used for：When the configuration cycle is 200ms, if meet following equation it One, it is determined that the DFN subframes are the subframe for sending the presupposed information, otherwise determine the DFN subframes be for Send the subframe of the presupposed information：

(10240*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

(40*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

It is preferred that Unit the 4th is additionally operable to：

(10*DFN+subframe number) mod cfgPeriod=OffsetIndicator

It is preferred that if the first module can obtain current time, DFN is determined by equation below：

It is preferred that if the first module can obtain current time, DFN subframes are determined by equation below：

It is preferred that if the first module can not obtain current time, pass through the system information or another of base station transmission The physics that one user equipment is sent leads directly to broadcast channel information, determines DFN and DFN subframes.

Another letter corresponding with the second method that above-mentioned the embodiment of the present application provides, that the embodiment of the present application provides Breath sends the determining device of time, including：

Determining unit, for when it is determined that timing cycle and configuration cycle mismatch, if current time can be obtained, profit With the current time and the deviation of default absolute reference time, determine whether the DFN subframes are for sending default letter The subframe of breath；Wherein, the configuration cycle is the cycle for sending the presupposed information.

It is preferred that the determining unit utilizes the current time and the deviation of default absolute reference time, institute is determined State whether DFN subframes are subframe for sending presupposed information, specifically include：

Brief description of the drawings

In order to illustrate more clearly of the technical scheme in the embodiment of the present application, make required in being described below to embodiment Accompanying drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the present application, for this For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings Accompanying drawing.

Fig. 1 is the synchronization frame deviation schematic diagram of different DFN cycles (1024 frame) in the prior art；

Fig. 2 is a kind of schematic flow sheet of the determination method for access time that the embodiment of the present application provides；

Fig. 3 is the synchronization frame deviation schematic diagram of different VFN in a kind of VFN cycles that the embodiment of the present application provides；

Fig. 4 is the synchronization frame deviation schematic diagram of different VFN in another VFN cycles that the embodiment of the present application provides；

Fig. 5 is the structural representation of the determining device for the first access time that the embodiment of the present application provides；

Fig. 6 is the structural representation of the determining device for second of access time that the embodiment of the present application provides；

Fig. 7 is the structural representation of the determining device for the third access time that the embodiment of the present application provides；

Fig. 8 is the structural representation of the determining device for the 4th kind of access time that the embodiment of the present application provides.

Embodiment

The technical scheme that the embodiment of the present application provides, when supporting LTE V2X configuration cycle to be mismatched with the system cycle, by The required configuration incorrect problem of subframe caused by deviation, i.e., when mismatching timing cycle and configuration cycle, provide Corresponding solution, it may thereby determine that whether DFN subframes corresponding to current time are subframe for sending presupposed information, Improve system reliability.

The processing method when configuration cycle that the embodiment of the present application provides mismatches with the timing cycle, wherein, it is described The timing cycle, after referring to that system obtains timing signal according to external clocks such as GNSS, according to unified time, such as the world Unified time (Coordinated Universal Time, UTC), obtain the DFN in timing cycle.Such as in LTE system Every frame definition is 10ms corresponding to DFN, and the DFN cycles (i.e. timing cycle) are 10240ms, by 10240ms namely After 10240/10=1024 frames, DFN frame numbers repeat.

The configuration cycle includes：Synchronizing cycle and the semi-continuous scheduling cycle both of these case of business.

The processing method that the embodiment of the present application provides comprises the following steps that：

Step 1: determine DFN：

If user equipment can directly obtain GNSS, DFN, timing cycle can be directly obtained according to UTC time Be defined as sysPeriod, then in LTE V2X systems, the sysPeriod=DFN cycles=10240ms；

Because the granularity of (Coordinated Universal Time, UTC) time world's unified time is UTC_granularity=10ms, due to need by UTC time be mapped as specific chronomere for ms, it is necessary to being obtained according to UTC Time be multiplied by corresponding to parameter 1/UTC_granularity.Because the number N of DFN subframes is included in 1 DFN_{DFN_subframe}=10 DFN subframes, 1 DFN correspond to 10ms, and 1 subframe is 1ms；So the computational methods of DFN and DFN subframes are as follows：

Wherein, T_currentFor the current time obtained from UTC, T_refFor configuration or pre-configured reference time, i.e., definitely join Examine the time, unit is all ms.

Other situations can reuse version 12 (R12) D2D mechanism, in LTE system covering with the DFN of eNB synchronization nodes from The system information that eNB is sent obtains SFN, so as to obtain DFN；The outer node that can not directly obtain GNSS of LTE system covering DFN, the DFN carried in the PSBCH that other nodes are sent can be received, when can not receive PSBCH, can be generated according to local oscillator DFN。

Step 2: determine DFN sub-frame informations：

According to following formula three, DFN subframes are calculated；

Step 3: determine synchronous subframe position：

If timing cycle sysPeriod can be configured cycle cfgPeriod divide exactly (i.e. the timing cycle with Configuration cycle matches), then the synchronous subframe calculation formula one in existing LTE D2D is revised as：

(10*DFN+subframe number) mod cfgPeriod=OffsetIndicator formula four

Wherein, subframe number are the DFN subframe DFN subframe obtained by formula three； OffsetIndicator represent system by configure or the presupposed information of pre-configured setting (such as synchronizing information or SPS scheduling letter Breath) send the time relative configuration cycle starting subframe skew number of sub-frames.Illustrate：

Assuming that cfgPeriod, which is 200, OffsetIndicator, is configured to 2, equivalent to the 3rd son in configuration cycle Frame；

Time corresponding to DFN+DFN subframes in system needs to be mapped to the 3rd subframe in configuration cycle, just meets bar Part.

If timing cycle sysPeriod can not be configured cycle cfgPeriod and divide exactly that (the timing cycle is with matching somebody with somebody Put cycle mismatch), there are following two settling modes：

Mode one, absolute reference Time Method：

Arrange an absolute initial time T_ref, e.g. UTC time, then synchronous subframe calculation formula be：

Mode two, least common multiple Time Method：

Define a new frame number (VFN), it is assumed that configuration cycle cfgPeriod ms, can be by configuring or pre-configured acquisition CfgPeriod occurrence, then VFN coefficient a be defined as：

A=sysPeriod mod cfgPeriod formula six

Assuming that Y is timing cycle sysPeriod and configuration cycle cfgPeriod least common multiple, Y is defined as：

Y=[sysPeriod, cfgPeriod] formula seven

VFN span is 0~n integer, then n values are：

N=[sysPeriod, cfgPeriod]/sysPeriod-1=Y/sysPeriod-1 formula eight

If UE can directly obtain GNSS, you can to obtain T_current, can directly be calculated and obtained using following formula nine Obtain VFN：

Wherein T_currentFor the current time obtained from UTC, T_refAll it is for configuration or pre-configured reference time, unit ms.If UE can not directly obtain GNSS, UE can obtain VFN, it is necessary to disappear in system from the eNB system messages broadcasted in covering Increase VFN information in breath newly.The VFN information carried in the PSBCH that other nodes are sent can also be received, it is necessary to increase in PSBCH Add VFN information.The transmission subframe position calculation formula for meeting condition in configuration cycle is as follows：

(a*VFN+10*DFN+subframe number) mod cfgPeriod=OffsetIndicator formula ten

The transmission subframe, including the synchronizing information transmission subframe in synchronizing cycle, the SPS business transmission in the SPS cycles Subframe.

Further, if LTE V2X determine that system synchronization period is 200ms, 5 DFN cycles (10240ms) are one The VFN cycles (51200ms is the cycle).The radio frames DFN=0 in synchronizing cycle from VFN=0 DFN cycles subframe DFN Subframe=0 starts to calculate.

The calculation formula of synchronous subframe is formula 11：

(10240*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

Or further considering that 10240*VFN can be reduced to 40*VFN after being handled by 200mod, formula 11 is changed to formula 12：

(40*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

Synchronizing cycle and SPS cycles may be identical in system, i.e. configuration cycle cfgPeriod may be identical, it is necessary to corresponding VFN it is identical, carried between node in the information of interaction correspond to respectively it is synchronous identical with SPS VFN settings.In addition, in system Synchronizing cycle and SPS cycles may also be different, i.e. configuration cycle cfgPeriod may it is different, it is necessary to corresponding VFN each not Together, the VFNsps for corresponding to synchronous VFNsync and corresponding SPS respectively is carried in the information of interaction between node.

As can be seen here, the determination method for the first access time that the embodiment of the present application provides, referring to Fig. 2, including：

S101, direct frame number DFN and DFN subframe corresponding to current time is determined, when the DFN subframes are described current Between subframe corresponding in frame corresponding to the DFN；

S102, when it is determined that timing cycle and configuration cycle mismatch, determine the use of the timing cycle with The specific period for including multiple default frames that the least common multiple of the configuration cycle obtains；Wherein, the configuration cycle is hair The cycle of presupposed information is sent, the duration and timing cycle phase of each default frame are same, the specific period and the configuration cycle Initial time it is identical；

S103, frame is preset according to corresponding to the specific period determines current time；

S104, frame is preset according to corresponding to the DFN, the DFN subframes and current time, determine the DFN subframes Whether it is subframe for sending the presupposed information.

Determine to preset frame corresponding to current time using equation below：

(a*VFN+10*DFN+subframe number) mod cfgPeriod=OffsetIndicator

(10240*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

(40*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

It is preferred that this method also includes：

(10*DFN+subframe number) mod cfgPeriod=OffsetIndicator

Referring to the determination method of Fig. 3, the embodiment of the present application second of access time provided, including：

S201, direct frame number DFN and DFN subframe corresponding to current time is determined, when the DFN subframes are described current Between subframe corresponding in frame corresponding to the DFN；

S202, when it is determined that timing cycle and configuration cycle mismatch, if current time can be obtained, worked as using described Preceding time and the deviation of default absolute reference time, determine whether the DFN subframes are subframe for sending presupposed information； Wherein, the configuration cycle is the cycle for sending the presupposed information.

The introduction of several specific embodiments is given below.

Embodiment 1, synchronization process：When UE can obtain current time, synchronous subframe is determined using absolute reference Time Method.

When configuration processing is synchronization process, configuration cycle cfgPeriod is syncPeriod synchronizing cycle, and configuration is offset OffsetIndicator offsets syncOffsetIndicator for synchronous configuration.

Assuming that the absolute initial time T that the synchronizing signal (i.e. described presupposed information) of default is sent_refFor 685.374ms, T_refFor configuration or pre-configured reference time, i.e. absolute reference time.Synchronizing cycle is 200ms, system information The syncOffsetIndicator of configuration is 101.

Assuming that UE can obtain current time T by GNSS or system information_currentFor 1186.875ms, then according to synchronization Subframe calculation formula substitutes into above-mentioned parameter：

It was found that current time meets above-mentioned formulaIllustrate T_currentPlace Subframe is synchronous subframe.

Assuming that UE can obtain current time T by GNSS or system information_currentFor 1188.875ms, according to same step Frame calculation formula substitutes into above-mentioned parameter：

It was found that current time is unsatisfactory for above-mentioned formulaExplanation T_currentPlace subframe is not synchronous subframe.

Embodiment 2：Synchronization process：Least common multiple Time Method, UE can directly obtain current time：

Referring to Fig. 4, when configuration processing is synchronization process, configuration cycle cfgPeriod is syncPeriod synchronizing cycle, is matched somebody with somebody Put skew OffsetIndicator and offset syncOffsetIndicator for synchronous configuration.Timing cycle sysPeriod For 10240ms.

Assuming that syncPeriod synchronizing cycle is 200ms, the syncOffsetIndicator obtained from system information is 101。

Assuming that one：UE can obtain current time T by GNSS or system information_currentFor 20701.5ms, default Synchronizing signal send absolute initial time T_refFor 0.5ms, then handle as follows：

Step 1：VFN coefficient a=10240mod syncPeriod=40；

Step 2：10240 and syncPeriod least common multiple Y=[10240, syncPeriod]=10240*5= 51200；

Step 3：VFN maximum n=[10240,200]/10240-1=Y/10240-1=51200/10240-1= 4；

Step 4：If UE can directly obtain GNSS, it can directly calculate and obtain VFN：

Calculate and understand that VFN is 2；

Step 5：Calculate DFN and DFN subframes：

Step 6：Synchronous subframe position calculation formula is as follows：

(a*VFN+10*DFN+subframe number) mod syncPeriod=(40*2+10*22+1) mod200= 101

Current time T is understood by above-mentioned calculating process_currentCorresponding subframe is synchronous subframe.

Assuming that two：UE can obtain current time T by GNSS or system information_currentFor 30942.5ms, default Synchronizing signal send absolute initial time T_refFor 0.5ms, then above-mentioned processing is different from step 4：

Step 4：According to T_currentCalculated for 30952.5ms and obtain VFN：

Calculate and understand that VFN is 3；

Step 5：Calculate DFN and DFN subframes：

Synchronous subframe position calculation formula is as follows：

(a*VFN+10*DFN+subframe number) mod syncPeriod=(40*3+10*23+2) mod200= 152≠101

Current time T is understood by above-mentioned calculating_currentIt is not synchronous subframe for subframe corresponding to 30942.5ms.

Embodiment 3, synchronization process：Least common multiple Time Method, UE can not obtain current time：

When configuration processing is synchronization process, configuration cycle cfgPeriod is syncPeriod synchronizing cycle, and configuration is offset OffsetIndicator offsets syncOffsetIndicator for synchronous configuration.The timing cycle, sysPeriod was 10240ms。

Assuming that one：Assuming that parameter is as follows：

UE is from system information, or it is 2 to transmit information acquisition VFN from other UE；

UE is from system information, or it is 22 and DFN subframes 1 that other UE, which transmit information or obtain DFN from local oscillator,；

It is as follows to calculate handling process：

Step 1：VFN coefficient a=10240mod syncPeriod=40；

Step 3：VFN maximum n=[10240,200]/10240-1=Y/10240-1=51200/10240-1= 4；

Step 4：Synchronous subframe position calculation formula is as follows：

(a*VFN+10*DFN+subframe number) mod syncPeriod=(40*2+10*22+1) mod200= 101

Understand that present sub-frame is synchronous subframe by above-mentioned calculating.

Assuming that two：Assuming that parameter is as follows：

UE is from system information, or it is 3 to transmit information acquisition VFN from other UE；

UE is from system information, or it is 23 and DFN subframes 2 that other UE, which transmit information or obtain DFN from local oscillator,；

Then above-mentioned processing is different from step 4：

Step 4：Synchronous subframe position calculation formula is as follows：

(a*VFN+10*DFN+subframe number) mod syncPeriod=(40*3+10*23+2) mod 200= 152≠101

Understand that present sub-frame is not synchronous subframe by above-mentioned calculating.

Embodiment 4, SPS processing：When UE can obtain current time, SPS subframes are determined using absolute reference Time Method.

When configuration processing is handled for SPS, configuration cycle cfgPeriod is SPS cycle spsPeriod, configuration skew OffsetIndicator is SPS configuration skews spsOffsetIndicator.

Assuming that the absolute initial time T that the sps signal of default is sent_refFor 685.374ms, T_refFor configuration or prewired The reference time put.The SPS cycles are 200ms, and the spsOffsetIndicator of system information configuration is 101.

Assuming that UE can obtain current time T by GNSS or system information_currentFor 1186.875ms, then according to SPS Subframe calculation formula substitutes into above-mentioned parameter：

It was found that current time meets above-mentioned formulaIllustrate Tcurrent institutes It is SPS subframes in subframe.

Assuming that UE can obtain current time T by GNSS or system information_currentFor 1188.875ms, according to SPS Frame calculation formula substitutes into above-mentioned parameter：

It was found that current time is unsatisfactory for above-mentioned formulaExplanation T_currentPlace subframe is not SPS subframes.

Embodiment 5, SPS processing：Least common multiple Time Method, UE can directly obtain current time：

When configuration processing is handled for SPS, configuration cycle cfgPeriod is SPS cycle spsPeriod, configuration skew OffsetIndicator is SPS configuration skews spsOffsetIndicator.The timing cycle, sysPeriod was 10240ms。

Assuming that SPS cycles spsPeriod is 200ms, the spsOffsetIndicator obtained from system information is 101.

Assuming that one：UE can obtain current time T by GNSS or system information_currentFor 20701.5ms, default Sps signal send absolute initial time T_refFor 0.5ms, then handle as follows：

Step 1：VFN coefficient a=10240mod spsPeriod=40；

Step 2：10240 and spsPeriod least common multiple Y=[10240, spsPeriod]=10240*5= 51200；

Step 3：VFN maximum n=[10240,200]/10240-1=Y/10240-1=51200/10240-1= 4；

Calculate and understand that VFN is 2；

Step 5：Calculate DFN and DFN subframes：

Step 6：SPS subframe position calculation formula are as follows：

(a*VFN+10*DFN+subframe number) mod spsPeriod=(40*2+10*22+1) mod200= 101

Current time T is understood by above-mentioned calculating_currentCorresponding subframe is SPS subframes.

Assuming that two：UE can obtain current time T by GNSS or system information_currentFor 30942.5ms, default Sps signal send absolute initial time T_refFor 0.5ms, then above-mentioned processing is different from step 4：

Step 4：According to T_currentCalculated for 30952.5ms and obtain VFN：

Calculate and understand that VFN is 3；

Step 5：Calculate DFN and DFN subframes：

Step 6：SPS subframe position calculation formula are as follows：

(a*VFN+10*DFN+subframe number) mod spsPeriod=(40*3+10*23+2) mod200= 152≠101

Current time T is understood by above-mentioned calculating_currentIt is not SPS subframes for subframe corresponding to 30942.5ms.

Embodiment 6, SPS processing：Least common multiple Time Method, UE can not obtain current time：

Assuming that one：Assuming that parameter is as follows：

UE is from system information, or it is 22 and DFN subframes 1 that other UE, which transmit information or obtain DFN from local oscillator,.

It is as follows to calculate handling process：

Step 1：VFN coefficient a=10240mod spsPeriod=40；

Step 3：VFN maximum n=[10240,200]/10240-1=Y/10240-1=51200/10240-1= 4；

Step 4：SPS subframe position calculation formula are as follows：

(a*VFN+10*DFN+subframe number) mod spsPeriod=(40*2+10*22+1) mod 200= 101

Understand that present sub-frame is SPS subframes by above-mentioned calculating.

Assuming that two：Assuming that parameter is as follows：

UE is from system information, or it is 23 and DFN subframes 2 that other UE, which transmit information or obtain DFN from local oscillator,.

Then above-mentioned processing is different from step 4：

Step 4：SPS subframe position calculation formula are as follows：

(a*VFN+10*DFN+subframe number) mod spsPeriod=(40*3+10*23+2) mod 200= 152≠101

Understand that present sub-frame is not SPS subframes by above-mentioned calculating.

It is corresponding with the first method that above-mentioned the embodiment of the present application provides referring to Fig. 5, what the embodiment of the present application provided A kind of determining device of access time, including：

First module 11, for determining that direct frame number DFN and DFN subframe, the DFN subframes are corresponding to current time Current time subframe corresponding in frame corresponding to the DFN；

Second unit 12, for when it is determined that the timing cycle mismatches with configuration cycle, determining the use of the system The specific period for including multiple default frames that timing cycle and the least common multiple of the configuration cycle obtain；Wherein, it is described to match somebody with somebody The cycle is put to send the cycle of presupposed information, the duration and timing cycle phase of each default frame are same, the specific period and institute The initial time for stating configuration cycle is identical；

Third unit 13, for presetting frame corresponding to determining current time according to the specific period；

4th unit 14, for presetting frame according to corresponding to the DFN, the DFN subframes and current time, determine institute State whether DFN subframes are subframe for sending the presupposed information.

It is preferred that the third unit is specifically used for：

It is preferred that Unit the 4th is specifically used for：

(a*VFN+10*DFN+subframe number) mod cfgPeriod=OffsetIndicator

(10240*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

(40*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

It is preferred that Unit the 4th is additionally operable to：

(10*DFN+subframe number) mod cfgPeriod=OffsetIndicator

It is corresponding with the second method that above-mentioned the embodiment of the present application provides referring to Fig. 6, what the embodiment of the present application provided Another determining device of access time, including：

First module 21, for determining that direct frame number DFN and DFN subframe, the DFN subframes are corresponding to current time Current time subframe corresponding in frame corresponding to the DFN；

Determining unit 22, for when it is determined that timing cycle and configuration cycle mismatch, if current time can be obtained, Using the current time and the deviation of default absolute reference time, determine whether the DFN subframes are default for sending The subframe of information；Wherein, the configuration cycle is the cycle for sending the presupposed information.

Referring to the determining device of Fig. 7, the embodiment of the present application the third access time provided, including：

Processor 600, for reading the program in memory 620, perform following process：

It is preferred that if processor 600 can obtain current time, the current time and default absolute reference time are utilized Deviation, and the specific period, determine to preset frame corresponding to current time.

It is preferred that processor 600 determines to preset frame corresponding to current time using equation below：

It is preferred that if processor 600 can not obtain current time, set by the system message or another user of base station broadcast The physics that preparation is sent leads directly to broadcast channel message, determines to preset frame corresponding to current time.

It is preferred that processor 600 when meeting below equation, determines that the DFN subframes are for sending the default letter The subframe of breath, it is not the subframe for sending the presupposed information otherwise to determine the DFN subframes：

(a*VFN+10*DFN+subframe number) mod cfgPeriod=OffsetIndicator

It is preferred that when the configuration cycle is 200ms, if meeting one of following equation, described in the determination of processor 600 DFN subframes are the subframe for sending the presupposed information, and it is not for sending the default letter otherwise to determine the DFN subframes The subframe of breath：

(10240*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

(40*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

It is preferred that processor 600 determines institute when it is determined that the timing cycle matches with configuration cycle, by following equation State whether DFN subframes are subframe for sending the presupposed information：

(10*DFN+subframe number) mod cfgPeriod=OffsetIndicator

It is preferred that if processor 600 can obtain current time by transceiver 610, DFN is determined by equation below：

It is preferred that if processor 600 can obtain current time by transceiver 610, DFN is determined by equation below Frame：

It is preferred that if processor 600 can not obtain current time by transceiver 610, pass through the system of base station transmission The physics that information or another user equipment are sent leads directly to broadcast channel information, determines DFN and DFN subframes.

Transceiver 610, for data to be received and sent under the control of processor 600.

Wherein, in the figure 7, bus architecture can include the bus and bridge of any number of interconnection, specifically by processor 600 The various circuits for the memory that the one or more processors and memory 620 of representative represent link together.Bus architecture is also Various other circuits of such as ancillary equipment, voltage-stablizer and management circuit or the like can be linked together, these are all It is it is known in the art, therefore, no longer it is described further herein.EBI provides interface.Transceiver 610 can To be multiple element, i.e., including transmitter and receiver, there is provided for the list to be communicated over a transmission medium with various other devices Member.For different user equipmenies, user interface 630, which be can also be, external the interface for needing equipment is inscribed, and connection is set Standby including but not limited to keypad, display, loudspeaker, microphone, control stick etc..

Processor 600 is responsible for bus architecture and common processing, and memory 620 can store processor 600 and hold Used data during row operation.

In the embodiment of the present application, processor can be that centre buries device (CPU), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or CPLD (Complex Programmable Logic Device, CPLD).

In addition, processor 600 can also have following function：

It is preferred that processor 600 utilizes the current time and the deviation of default absolute reference time, it is determined that described Whether DFN subframes are subframe for sending presupposed information, are specifically included：

The determining device of access time shown in Fig. 7, such as can be a kind of terminal side equipments such as user equipment.

The determining device for the access time that the embodiment of the present application provides, or the equipment of network side, referring to figure 8, the determining device for the 4th kind of access time that the embodiment of the present application provides, including：

Processor 500, for reading the program in memory 520, perform following process：

It is preferred that if processor 500 can obtain current time, the current time and default absolute reference time are utilized Deviation, and the specific period, determine to preset frame corresponding to current time.

It is preferred that processor 500 determines to preset frame corresponding to current time using equation below：

It is preferred that if processor 500 can not obtain current time, set by the system message or another user of base station broadcast The physics that preparation is sent leads directly to broadcast channel message, determines to preset frame corresponding to current time.

It is preferred that processor 500 when meeting below equation, determines that the DFN subframes are for sending the default letter The subframe of breath, it is not the subframe for sending the presupposed information otherwise to determine the DFN subframes：

(a*VFN+10*DFN+subframe number) mod cfgPeriod=OffsetIndicator

It is preferred that when the configuration cycle is 200ms, if meeting one of following equation, described in the determination of processor 500 DFN subframes are the subframe for sending the presupposed information, and it is not for sending the default letter otherwise to determine the DFN subframes The subframe of breath：

(10240*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

(40*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

It is preferred that processor 500 determines institute when it is determined that the timing cycle matches with configuration cycle, by following equation State whether DFN subframes are subframe for sending the presupposed information：

(10*DFN+subframe number) mod cfgPeriod=OffsetIndicator

It is preferred that if processor 500 can obtain current time by transceiver 510, DFN is determined by equation below：

It is preferred that if processor 500 can obtain current time by transceiver 510, DFN is determined by equation below Frame：

It is preferred that if processor 500 can not obtain current time by transceiver 510, pass through the system of base station transmission The physics that information or another user equipment are sent leads directly to broadcast channel information, determines DFN and DFN subframes.

Transceiver 510, for receiving and sending data under control of the processor 500.

Wherein, in fig. 8, bus architecture can include the bus and bridge of any number of interconnection, specifically by processor 500 The various circuits for the memory that the one or more processors and memory 520 of representative represent link together.Bus architecture is also Various other circuits of such as ancillary equipment, voltage-stablizer and management circuit or the like can be linked together, these are all It is it is known in the art, therefore, no longer it is described further herein.EBI provides interface.Transceiver 510 can To be multiple element, i.e., including transmitter and transceiver, there is provided for the list to be communicated over a transmission medium with various other devices Member.Processor 500 is responsible for bus architecture and common processing, and memory 520 can store processor 500 and perform operation When used data.

In addition, processor 500 can also have following function：

It is preferred that processor 500 utilizes the current time and the deviation of default absolute reference time, it is determined that described Whether DFN subframes are subframe for sending presupposed information, are specifically included：

The determining device of access time shown in Fig. 8, such as can be a kind of network equipments such as base station.

In summary, in the embodiment of the present application, is set, according to current time and absolute reference time the absolute reference time Deviation, judge whether to meet deviant within configuration cycle, determine whether present sub-frame is configuration needed for configuration cycle Frame；Or according to system-frame cycle period and the least common multiple of configuration cycle setting configuration frame VFN, due to starting in VFN Skew difference on the basis of existing DFN to DFN subframes, it is necessary to increase the related skews of each VFN.I.e. present applicant proposes one kind Configuration cycle and timing cycle unmatched processing scheme, propose required configuration subframe determination side in two kinds of configuration cycles Formula, both support to directly obtain the node of timing information, directly calculate and determine configuration subframe；Also support according to system information, it is other The mode of node-node transmission information, calculate and determine configuration subframe.Solve due to determining caused by configuration cycle flexible configuration with system When cycle unmatched problem, can accurately determine to configure subframe in DFN and the position in configuration cycle, improve the logical of system Believe reliability.

It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program Product.Therefore, the application can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware Apply the form of example.Moreover, the application can use the computer for wherein including computer usable program code in one or more The shape for the computer program product that usable storage medium is implemented on (including but is not limited to magnetic disk storage and optical memory etc.) Formula.

The application is with reference to the flow according to the method for the embodiment of the present application, equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.

These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or The function of being specified in multiple square frames.

These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in individual square frame or multiple square frames.

Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the application to the application God and scope.So, if these modifications and variations of the application belong to the scope of the application claim and its equivalent technologies Within, then the application is also intended to comprising including these changes and modification.

Claims

1. the determination method of a kind of access time, it is characterised in that this method includes：

Direct frame number DFN and DFN subframe corresponding to current time is determined, the DFN subframes are the current time described Corresponding subframe in frame corresponding to DFN；

When it is determined that the timing cycle mismatches with configuration cycle, the timing cycle and the configuration week are determined the use of The specific period for including multiple default frames that the least common multiple of phase obtains；Wherein, the configuration cycle is transmission presupposed information Cycle, the duration and timing cycle phase of each default frame are same, the initial time of the specific period and the configuration cycle It is identical；

According to corresponding to the DFN, the DFN subframes and current time preset frame, determine the DFN subframes whether be for Send the subframe of the presupposed information.

2. according to the method for claim 1, it is characterised in that pre- according to corresponding to the specific period determines current time If frame, specifically include：

If current time can be obtained, using the current time and the deviation of default absolute reference time, and it is described specific In the cycle, determine to preset frame corresponding to current time.

3. according to the method for claim 2, it is characterised in that utilize the current time and default absolute reference time Deviation, and the specific period, determine to preset frame corresponding to current time, specifically include：

Determine to preset frame corresponding to current time using equation below：

Wherein, VFN represents to preset the frame number of frame, UTC corresponding to current time_granularityRepresent world unified time UTC when Between granularity, T_currentRepresent the current time, T_refThe absolute reference time is represented, Y represents the specific period, N_{DFN_subframe}The number of subframe included in frame corresponding to the DFN is represented, sysPeriod represents the timing cycle.

4. according to the method for claim 1, it is characterised in that if current time can not be obtained, according to the specific week Phase determines to preset frame corresponding to current time, specifically included：

The physics sent by the system message of base station broadcast or another user equipment leads directly to broadcast channel message, it is determined that when current Between corresponding default frame.

5. according to the method for claim 4, it is characterised in that the configuration cycle is divided into synchronizing cycle and semi-continuous scheduling Cycle；

The message, which includes presetting corresponding to synchronizing cycle, presets the instruction of frame identical corresponding to frame and semi-continuous scheduling cycle Information, and the identical preset the information of frame；Or the message include corresponding to synchronizing cycle preset frame information and The information of frame is preset corresponding to the semi-continuous scheduling cycle.

6. according to the method for claim 1, it is characterised in that described according to the DFN, DFN subframes and current Frame is preset corresponding to time, determines whether the DFN subframes are subframe for sending the presupposed information, are specifically included：

When meeting below equation, it is the subframe for sending the presupposed information to determine the DFN subframes, otherwise described in determination DFN subframes are not the subframe for sending the presupposed information：

(a*VFN+10*DFN+subframe number) modcfgPeriod=OffsetIndicator

Wherein, a=sysPeriodmodcfgPeriod, sysPeriod represent the timing cycle, and cfgPeriod is represented The configuration cycle, VFN represent to preset the frame number of frame, the subframe number expressions DFN corresponding to the current time Subframe, OffsetIndicator represent that the subframe for sending presupposed information originates skew of subframe relative to the configuration cycle Frame number.

7. according to the method for claim 1, it is characterised in that when the configuration cycle is 200ms, if meeting following public affairs One of formula, it is determined that the DFN subframes are the subframe for sending the presupposed information, otherwise determine that the DFN subframes are not For sending the subframe of the presupposed information：

(10240*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

(40*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

Wherein, VFN represents to preset the frame number of frame corresponding to the current time, and subframe number represent DFN Frame, syncOffsetIndicator represent simultaneous bias instruction.

8. according to the method for claim 1, it is characterised in that this method also includes：

When it is determined that the timing cycle matches with configuration cycle, by following equation determine the DFN subframes whether be for Send the subframe of the presupposed information：

(10*DFN+subframe number) modcfgPeriod=OffsetIndicator

9. according to the method for claim 1, it is characterised in that if current time can be obtained, determined by equation below DFN：

Wherein, UTC_granularityRepresent world unified time UTC time granularity, T_currentRepresent the current time, T_refTable Show the absolute reference time, sysPeriod represents the timing cycle, N_{DFN_su}bf_rameRepresent corresponding to the DFN The number of the subframe included in frame.

10. according to the method for claim 1, it is characterised in that if current time can be obtained, determined by equation below DFN subframes：

Wherein, DFN subframe represent DFN subframes, T_currentRepresent the current time, T_refWhen representing the absolute reference Between, N_{DFN_subframe}Represent the number of subframe included in frame corresponding to the DFN.

11. according to the method for claim 1, it is characterised in that if current time can not be obtained, sent by base station The physics that system information or another user equipment are sent leads directly to broadcast channel information, determines DFN and DFN subframes.

12. the determination method of a kind of access time, it is characterised in that this method includes：

When it is determined that timing cycle and configuration cycle mismatch, if current time can be obtained, using the current time and The deviation of default absolute reference time, determine whether the DFN subframes are subframe for sending presupposed information；Wherein, institute Configuration cycle is stated to send the cycle of the presupposed information.

13. according to the method for claim 12, it is characterised in that during using the current time and default absolute reference Between deviation, determine whether the DFN subframes are subframe for sending presupposed information, are specifically included：

When meeting following equation, it is the subframe for sending presupposed information to determine the DFN subframes, otherwise, it determines the DFN Subframe is not the subframe for sending presupposed information：

Wherein, T_currentRepresent the current time, T_refThe absolute reference time is represented, cfgPeriod represents the configuration Cycle, OffsetIndicator represent that the subframe for sending presupposed information originates skew of subframe relative to the configuration cycle Frame number.

A kind of 14. determining device of access time, it is characterised in that including：

First module, for determining direct frame number DFN and DFN subframe corresponding to current time, the DFN subframes are worked as to be described Subframe of the preceding time corresponding in frame corresponding to the DFN；

Second unit, for when it is determined that the timing cycle mismatches with configuration cycle, determining the use of the timing week The specific period for including multiple default frames that the least common multiple of phase and the configuration cycle obtain；Wherein, the configuration cycle To send the cycle of presupposed information, the duration and timing cycle phase of each default frame are same, the specific period and the configuration The initial time in cycle is identical；

Unit the 4th, for presetting frame according to corresponding to the DFN, the DFN subframes and current time, determine the DFN Whether subframe is subframe for sending the presupposed information.

15. device according to claim 14, it is characterised in that the third unit is specifically used for：

16. device according to claim 15, it is characterised in that when the third unit determines current using equation below Between corresponding default frame：

17. device according to claim 14, it is characterised in that the third unit is specifically used for：

If current time can not be obtained, the physics sent by the system message of base station broadcast or another user equipment leads directly to broadcast Channel massage, determine to preset frame corresponding to current time.

18. device according to claim 17, it is characterised in that the configuration cycle is divided into synchronizing cycle and semi-continuous tune Spend the cycle；

19. device according to claim 14, it is characterised in that Unit the 4th is specifically used for：

(a*VFN+10*DFN+subframe number) modcfgPeriod=OffsetIndicator

20. device according to claim 14, it is characterised in that Unit the 4th is specifically used for：When the configuration week When phase is 200ms, if meeting one of following equation, it is determined that the DFN subframes are the subframe for sending the presupposed information, Otherwise it is not the subframe for sending the presupposed information to determine the DFN subframes：

(10240*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

(40*VFN+10*DFN+subframe number) mod 200=syncOffsetIndicator

21. device according to claim 14, it is characterised in that Unit the 4th is additionally operable to：

(10*DFN+subframe number) modcfgPeriod=OffsetIndicator

22. device according to claim 14, it is characterised in that if the first module can obtain current time, lead to Cross equation below and determine DFN：

23. device according to claim 14, it is characterised in that if the first module can obtain current time, lead to Cross equation below and determine DFN subframes：

24. device according to claim 14, it is characterised in that if the first module can not obtain current time, The physics that the system information sent by base station or another user equipment are sent leads directly to broadcast channel information, determines DFN and DFN Subframe.

A kind of 25. determining device of access time, it is characterised in that including：

Determining unit, for when it is determined that the timing cycle mismatches with configuration cycle, if current time can be obtained, utilizing institute Current time and the deviation of default absolute reference time are stated, determines whether the DFN subframes are for sending presupposed information Subframe；Wherein, the configuration cycle is the cycle for sending the presupposed information.

26. device according to claim 25, it is characterised in that the determining unit is using the current time and presets The absolute reference time deviation, determine whether the DFN subframes are subframe for sending presupposed information, are specifically included：