CN104754725B - SB acquisition methods and acquisition system under LTE mode - Google Patents
SB acquisition methods and acquisition system under LTE mode Download PDFInfo
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- CN104754725B CN104754725B CN201310752622.5A CN201310752622A CN104754725B CN 104754725 B CN104754725 B CN 104754725B CN 201310752622 A CN201310752622 A CN 201310752622A CN 104754725 B CN104754725 B CN 104754725B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/002—Mutual synchronization
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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Abstract
The present invention provides SB acquisition methods under a kind of LTE mode and obtain system, when FB blind examination success, the position GAP that can receive SB is obtained, SB detection is carried out by the GAP on the position GAP that can receive SB, thus avoids caused GAP waste when blind examination SB.In addition, when FB blind examination is unsuccessful, carrying out SB blind examination under LTE mode provided by the invention in SB acquisition methods and acquisition system to received data, increasing the chance for obtaining SB and the utilization rate for improving GAP.
Description
Technical field
The present invention relates to mobile communication technology field, in particular to SB acquisition methods and acquisition system under a kind of LTE mode.
Background technique
Currently, the commercialization with LTE technology is in progress, many countries or will dispose LTE network.At networking initial stage,
LTE network is difficult to accomplish 100% coverage rate, and existing GSM network and 3G network then possess good covering.Therefore, it utilizes
2G and 3G network covering, keep the business continuance of LTE user to become the mainstream implementation strategy of mobile operator.In order to guarantee industry
The continuity of business, terminal must also support 2G, 3G and LTE mode.Therefore, LTE terminal is generally multimode terminal, and supports GSM
Mode is also mainstream.
When carrying out business under LTE mode, need to carry out GSM nearby region measurement.This just needs to complete the synchronization of the adjacent area GSM.
GSM neighbor synchronization is to be captured and completed to synchronization signal.The synchronization signal of gsm system is made of two parts, and one is
In FCCH(Frequency Correction CHannels) on the FB(Frequency correction Burst that carries),
One is in SCH(Synchronization CHannel) on the SB(Synchronization Burst that carries).FCCH and
Frequency location where SCH is serving cell dominant frequency point, and time location is respectively the in 51 multi-frames that TS0 is constituted on dominant frequency point
{ 0,10,20,30,40 } and { 1,11,21,31,41 } frame.
Wherein, FB sequential structure is very simple, is made of 148 complete " 0 " bits, by GMSK(gaussian minimum shift key
Control) modulation after, become frequency be higher than carrier frequency about 66.7kHz sine wave, about 577 μ s of duration.It is adjacent in sequence
Phase difference between bit is 90 °.The sine wave of a cycle can be made of 4 bits, so 148 bits can form about 37
The sine wave (as shown in Figure 1) in a period.Terminal by capture complete or sinusoidal segment wave can correct own frequency come
Realize the Frequency Synchronization with network.BSIC information is carried in SB, the operation by capturing SB can be obtained the BSIC of cell, and
The frame number information of the cell.The capture for completing SB, means that and completes time synchronization with this cell.The position of FB and SB
As shown in Figure 2, wherein " F " indicates frequency Correction Burst burst；" B " for BCCH message blocks (4 continuous T DMA frames
TS0)；" C " is used for the message blocks (TS0 of 4 continuous T DMA frames) of CCCH；" S " indicates synchronizing pulse train burst；"-" indicates
It is idle.
Agreement provide in the case where LTE is in RRC_CONNECTED, alien frequencies or different system adjacent cell are measured need using
Measure GAP.Measurement GAP is that agreement provides that dedicated for carrying out a length of alien frequencies or the measurement of different system adjacent cell be 6ms
Sequential time slices.It is as shown in table 1 to measure GAP configuration:
| GAP type | The GAP period (ms) |
| 0 | 40 |
| 1 | 80 |
GAP Configuration Type is measured under table 1LTE
Although the GAP length under LTE is 6ms, the time span for being actually available to receive alien frequencies point data is less than
6ms.This is because the frequency point of receiver is changed, frequency handover needs the regular hour.According to protocol requirement, this 6ms
In can be used for GSM data receiver length be 5.278ms.Agreement provides as follows: when GSM SB center at the center of GAP
In ± 2350 μ s, then UE correctly can be decoded (as shown in Figure 3) to SB.Referring to FIG. 4, described according to agreement,
toffsetValue range are as follows: 0ms < toffset< 4.701ms.
In current implementation, usually to data progress SB blind examination is received, until blind examination is successful or reaches maximum
Number blind examination failure.Due to being to carry out blind examination to SB, more GAP is generally required, will also have more GAP to carry out SB inspection
It surveys but does not capture SB, to will lead to the waste of more GAP.
Summary of the invention
The purpose of the present invention is to provide SB acquisition methods under a kind of LTE mode and system is obtained, to solve existing LTE
GAP wastes more problem in SB acquisition methods under mode.
In order to solve the above technical problems, the present invention provides SB acquisition methods under a kind of LTE mode, SB under the LTE mode
Acquisition methods include:
It receives data and carries out FB blind examination；
When FB blind examination success, the position GAP that can receive SB is obtained；Pass through the position GAP that can receive SB
The GAP set carries out SB detection；
When FB blind examination is unsuccessful, SB blind examination is carried out to received data.
Optionally, it under the LTE mode in SB acquisition methods, when FB blind examination success and completely has received comprising FB
Data when, and the initial position distance GAP of FB can receive the end positions of data and be less thanWhen, it can receive SB
The position GAP obtain according to the following formula:
N*Tgap=M*T51_frame+tfb_sb_diff_intra_51_frame
Wherein, Tgap: the period of GAP, value are 40ms or 80ms；
N: it can receive GAP number between GAP used in SB GAP and FB blind examination success；
T51_frame: the length of 51 multi-frames, value are
Complete 51 multi-frame number between M:FB and SB；
tfb_sb_diff_intra_51_frame: timing offset in the frame between FB and SB.
Optionally, under the LTE mode in SB acquisition methods, according between FB and SB differ TDMA frame number,
tfb_sb_diff_intra_51_frameValue it is as follows:
When differing 1 TDMA frame, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 11 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 21 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 31 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 41 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
Optionally, under the LTE mode in SB acquisition methods, when FB blind examination is successful and it is complete to number the GAP for being n
When having received the data comprising FB, wherein n is nonnegative integer；
Then when the GAP period is 40ms, the GAP that number is n+6 can receive SB；When the GAP period is 80ms, number
It can receive SB for the GAP of n+3.
Optionally, it under the LTE mode in SB acquisition methods, when FB blind examination success and has received partially comprising FB
Data, received part include the data of FB be the rear portion timesharing in FB data, then FB blind examination success GAP used can be with
Receive SB.
Optionally, under the LTE mode in SB acquisition methods, when FB blind examination success and complete FB number is had received
According to, and the initial position distance GAP of FB can receive the end positions of data and be more thanWhen, then used in FB blind examination success
GAP can receive SB.
Optionally, it under the LTE mode in SB acquisition methods, when FB blind examination success and has received partially comprising FB
Data, received part include the data of FB be the front timesharing in FB data, can receive the position GAP of SB according to
Following formula obtains:
M*T51_frame+tfb_sb_diff_intra_51_frame=N*Tgap+Δintra_gap
Wherein, Tgap: the period of GAP, value are 40ms or 80ms；
N: it can receive GAP number between GAP used in SB GAP and FB blind examination success；
T51_frame: the length of 51 multi-frames, value are
Complete 51 multi-frame number between M:FB and SB；
tfb_sb_diff_intra_51_frame: timing offset in the frame between FB and SB；
Δintra_gap: the offset in GAP, value range are (- Tgap,Tgap)。
Optionally, under the LTE mode in SB acquisition methods, the Δintra_gapValue be
Optionally, under the LTE mode in SB acquisition methods, when FB blind examination success and the GAP for being n reception is numbered
Part includes the data of FB, and the received part of institute includes that the data of FB are the front timesharing in FB data, wherein n is non-negative
Integer；
Then when the GAP period is 40ms, the GAP that number is n+12 can receive SB；When the GAP period is 80ms, compile
Number it can receive SB for the GAP of n+6.
Optionally, under the LTE mode in SB acquisition methods, in the case where timing adjustment occurs in UE, when FB is blind
Examine successfully and number the GAP for being n have received part include FB data, institute received part include FB data be FB data
In front timesharing；Alternatively, completely being connect in the case where timing adjustment occurs in UE when FB blind examination is successful and numbers the GAP for being n
The data comprising FB are received, while FB falls in the tail portion of used GAP, wherein n is nonnegative integer；
Then when the GAP period is 40ms, number is n+19 or the GAP of n+25 can receive SB；It is when the GAP period
When 80ms, number is n+13 or the GAP of n+16 can receive SB.
The present invention also provides SB under a kind of LTE mode to obtain system, and SB acquisition system includes: under the LTE mode
First processing module, to receive data and carry out FB blind examination；
Second processing module, to obtain the position GAP that can receive SB when FB blind examination success；By it is described can
GAP on the position GAP to receive SB carries out SB detection；When FB blind examination is unsuccessful, SB blind examination is carried out to received data.
Optionally, it under the LTE mode in SB acquisition system, when FB blind examination success and completely has received comprising FB
Data when, and the initial position distance GAP of FB can receive the end positions of data and be less thanWhen, it can receive SB
The position GAP obtain according to the following formula:
N*Tgap=M*T51_frame+tfb_sb_diff_intra_51_frame
Wherein, Tgap: the period of GAP, value are 40ms or 80ms；
N: it can receive GAP number between GAP used in SB GAP and FB blind examination success；
T51_frame: the length of 51 multi-frames, value are
Complete 51 multi-frame number between M:FB and SB；
tfb_sb_diff_intra_51_frame: timing offset in the frame between FB and SB.
Optionally, under the LTE mode in SB acquisition system, according between FB and SB differ TDMA frame number,
tfb_sb_diff_intra_51_frameValue it is as follows:
When differing 1 TDMA frame, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 11 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 21 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 31 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 41 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
Optionally, under the LTE mode in SB acquisition system, when FB blind examination is successful and it is complete to number the GAP for being n
When having received the data comprising FB, wherein n is nonnegative integer；
Then when the GAP period is 40ms, the GAP that number is n+6 can receive SB；When the GAP period is 80ms, number
It can receive SB for the GAP of n+3.
Optionally, it under the LTE mode in SB acquisition system, when FB blind examination success and has received partially comprising FB
Data, received part include the data of FB be the rear portion timesharing in FB data, then FB blind examination success GAP used can be with
Receive SB.
Optionally, under the LTE mode in SB acquisition system, when FB blind examination success and complete FB number is had received
According to, and the initial position distance GAP of FB can receive the end positions of data and be more thanWhen, then used in FB blind examination success
GAP can receive SB.
Optionally, it under the LTE mode in SB acquisition system, when FB blind examination success and has received partially comprising FB
Data, received part include the data of FB be the front timesharing in FB data, can receive the position GAP of SB according to
Following formula obtains:
M*T51_frame+tfb_sb_diff_intra_51_frame=N*Tgap+Δintra_gap
Wherein, Tgap: the period of GAP, value are 40ms or 80ms；
N: it can receive GAP number between GAP used in SB GAP and FB blind examination success；
T51_frame: the length of 51 multi-frames, value are
Complete 51 multi-frame number between M:FB and SB；
tfb_sb_diff_intra_51_frame: timing offset in the frame between FB and SB；
Δintra_gap: the offset in GAP, value range are (- Tgap,Tgap)。
Optionally, under the LTE mode in SB acquisition system, the Δintra_gapValue be
Optionally, under the LTE mode in SB acquisition system, when FB blind examination success and the GAP for being n reception is numbered
Part includes the data of FB, and the received part of institute includes that the data of FB are the front timesharing in FB data, wherein n is non-negative
Integer；
Then when the GAP period is 40ms, the GAP that number is n+12 can receive SB；When the GAP period is 80ms, compile
Number it can receive SB for the GAP of n+6.
Optionally, under the LTE mode in SB acquisition system, in the case where timing adjustment occurs in UE, when FB is blind
Examine successfully and number the GAP for being n have received part include FB data, institute received part include FB data be FB data
In front timesharing；Alternatively, completely being connect in the case where timing adjustment occurs in UE when FB blind examination is successful and numbers the GAP for being n
The data comprising FB are received, while FB falls in the tail portion of used GAP, wherein n is nonnegative integer；
Then when the GAP period is 40ms, number is n+19 or the GAP of n+25 can receive SB；It is when the GAP period
When 80ms, number is n+13 or the GAP of n+16 can receive SB.
Under LTE mode provided by the invention in SB acquisition methods and acquisition system, when FB blind examination success, acquisition can be with
The position GAP for receiving SB carries out SB detection by the GAP on the position GAP that can receive SB, thus avoids blind
Examine caused GAP waste when SB.In addition, under LTE mode provided by the invention in SB acquisition methods and acquisition system, when FB is blind
When examining unsuccessful, SB blind examination is carried out to received data, increases the chance for obtaining SB and the utilization rate for improving GAP.
Detailed description of the invention
Fig. 1 is FB signal time domain schematic diagram after GMSK modulation；
Fig. 2 is 51 multi-frame structure schematic diagrames；
Fig. 3 is the demand schematic diagram of the capture SB of protocol conventions；
Fig. 4 is that BSIC initially confirms successfully acquisition timing relationship schematic diagram；
Fig. 5 be the embodiment of the present invention LTE mode under SB acquisition methods flow diagram；
Fig. 6 be the embodiment of the present invention LTE mode under SB obtain system mount structure schematic diagram；
Fig. 7 is schematic diagram of a scenario when FB is completely received；
Fig. 8 is the received schematic diagram of a scenario in the part FB；
Fig. 9 is the received schematic diagram of a scenario in the rear portion FB point；
Figure 10 is the received schematic diagram of a scenario in the front FB point；
Figure 11 is the reception schematic diagram of a scenario of SB when UE timing changes；
Figure 12 is schematic diagram of a scenario when FB is completely received when UE timing changes.
Specific embodiment
To SB acquisition methods under LTE mode proposed by the present invention and system work is obtained below in conjunction with the drawings and specific embodiments
It is further described.According to following explanation and claims, advantages and features of the invention will be become apparent from.It should be noted
It is that attached drawing is all made of very simplified form and using non-accurate ratio, only to facilitate, lucidly aid in illustrating this hair
The purpose of bright embodiment.
Referring to FIG. 5, its flow diagram for SB acquisition methods under the LTE mode of the embodiment of the present invention.Such as Fig. 5 institute
Show, SB acquisition methods include: under the LTE mode
Step S10: data are received and carry out FB blind examination；
Step S11: judge FB blind examination success or not；
When FB blind examination success, step S110 is executed: obtaining the position GAP that can receive SB；It can be connect by described
The GAP received on the position GAP of SB carries out SB detection；
When FB blind examination is unsuccessful, step S111 is executed: SB blind examination is carried out to received data.
Correspondingly, the present embodiment, which also provides SB under a kind of LTE mode, obtains system, specifically, referring to FIG. 6, it is this
SB obtains the mount structure schematic diagram of system under the LTE mode of inventive embodiments.As shown in fig. 6, SB obtains system under the LTE mode
System includes:
First processing module 20, to receive data and carry out FB blind examination；
Second processing module 21, to obtain the position GAP that can receive SB when FB blind examination success；By described
The GAP that can receive on the position GAP of SB carries out SB detection；When FB blind examination is unsuccessful, it is blind that SB is carried out to received data
Inspection.
In the present embodiment, when FB blind examination is unsuccessful, it is blind SB can be carried out by the data that existing interface differential technique is received
Inspection, therefore the application repeats no more this.It is emphasized that in the embodiment of the present application, when FB blind examination is unsuccessful, docking
The data of receipts carry out SB blind examination, increase the chance for obtaining SB and the utilization rate for improving GAP.
In the subsequent description of the embodiment of the present application, emphasis description is obtained for can receive the position GAP of SB
It takes.In the present embodiment, according to the different reception states to FB, can be obtained by following different modes can receive SB's
The position GAP.
1, FB is completely received
Referring to FIG. 7, schematic diagram of a scenario when it is completely received for FB, to this according to GAP period and GSM51 multi-frame length
It can be concluded that.Specifically, assume number n(wherein, n is nonnegative integer) GAP capture complete FB, and successfully complete FB examine
Surveying (that is FB blind examination success), then wherein, N is nonnegative integer to n+N() GAP of number can be successfully received SB.Number n
GAP and FB between timing relationship, the timing relationship between the GAP of number n+N and SB is identical, i.e. toffset=t 'offset。
It therefore deduces that:
tgap,n+N-tgap,n=tfb-tsb
The meaning of parameters is as follows:
tgap,n: the initial time for the GAP that number is n,
tgap,n+N: the initial time for the GAP that number is n+N,
tfb: the initial time of FB,
tsb: the initial time of SB.
Then, it according to GAP period and GSM51 multi-frame structure and length, can further obtain:
N*Tgap=M*T51_frame+tfb_sb_diff_intra_51_frame
Each meaning of parameters is as follows in above formula:
Tgap: the period of GAP, value are 40ms or 80ms.
N: the GAP and number that number is the GAP between the GAP of n that i.e. above-described number is n+N, that is, can be with
Receive GAP number between GAP used in GAP the and FB blind examination success of SB.
T51_frame: the length of 51 multi-frames, value are
Complete 51 multi-frame number between M:FB and SB.
tfb_sb_diff_intra_51_frame: timing offset in the frame between FB and SB.
According to the positional relationship between SB and FB, it can be deduced that tfb_sb_diff_intra_51_frameValue it is as shown in table 2 below:
Table 2tfb_sb_diff_intra_51_frameValue
By formula above it follows that
1), the initial position distance GAP of FB can receive the end position of data (shown in rightmost side dotted line as shown in Figure 3
Position) be more thanWhen, then FB blind examination success GAP used can receive SB；
2), the end position that the initial position distance GAP of FB can receive data is less thanWhen, the interior number of frame is immediately
The SB of FB can be fallen in after 240ms on the same position GAP, i.e.,
It is possible thereby to which the minimum value for obtaining N is as shown in table 3 below:
| The GAP period | N value |
| 40ms | 6 |
| 80ms | 3 |
The minimum value of table 3N
When FB is completely received and detected successfully, the number that can receive the GAP of SB can be calculated.Configure the GAP
The data receiver of the GSM cell is carried out, so that SB can be received certainly.And according to the initial position of FB, SB can be only received
The data of length, without receiving complete GAP length data.At this point, number is that GAP between n and n+N can be then not used in
The SB blind examination of the adjacent area, improves the service efficiency of GAP in this way.
2, the part FB receives
The part of FB, which receives, is divided into two kinds of situations, and one is the front of FB taps to receive, and another kind is that the rear portion tap of FB is received,
Specifically please refer to Fig. 8.
2.1, GAP has received the rear partial data of FB
Referring to FIG. 9, it is the received schematic diagram of a scenario in the rear portion FB point.According to the composition and timed-shutoff of GSM51 multi-frame
System, it can be deduced that: this when, the GAP can receive SB.Specific reason is as follows: since 10 frames are SB letter certainly after FB
Number, then being divided into 4.615ms between FB and SB.Agreement regulation GAP can be used for the received time span of GSM
5.278ms has been more than the interval between FB and SB, and can also include complete SB data.Further, the SB number is decoded
According to can carry out BSIC and initially confirm.That is, GAP used in the success of FB blind examination at this time can receive SB.
2.2, GAP has received the preceding partial data of FB
Referring to FIG. 10, it is the received schematic diagram of a scenario in the front FB point.It is still assumed that the GAP of number n receives part
FB signal, since signal is stronger, FB is detected successfully.Complete S B can be successfully received in the GAP of number n+N.If can
The N value found according to successful FB information is detected after then FB is detected successfully, directly carries out SB using the GAP calculated and connects
Receipts.
Firstly, by FB and SB Unified number, it is assumed that FB that number is k, which detect part, successfully to be received the GAP of the FB and number and be
n；The SB that then number is k+K is entirely fallen in the GAP that number is n+N.It can be obtained according to Figure 10, the FB and number that number is k are k+K
SB between interval are as follows:
tdiff=tsb,k+K-tfb,k
It is available according to the frame structure of GSM:
tdiff=tsb,k+K-tfb,k
=M*T51_frame+tfb_sb_diff_intra_51_frame
Each meaning of parameters is as follows:
tfb,k: the initial time of the FB of number k,
tsb,k+K: the initial time of the SB of number k+K,
tfb_sb_diff_intra_51_frame: timing offset in the frame between FB and SB；
T51_frame: the length of 51 multi-frames, value are
Complete 51 multi-frame number between M:FB and SB.
Meanwhile by tdiffIt is indicated using GAP, it can be deduced that:
tdiff=N*Tgap+Δintra_gap
The meaning of parameters is as follows:
N: the number of integer GAP, namely can receive GAP between GAP used in GAP the and FB blind examination success of SB
Number.
Tgap: the period of GAP, value are 40ms or 80ms.
Δintra_gap: the offset in GAP, value range are (- Tgap,Tgap)。
It is possible thereby to be derived from:
That is Δintra_gapValue can arrange.
It can be obtained according to Figure 10:
t′offset=Δintra_gap+toffset
Since FB reception is imperfect, and (i.e. GAP receive FB before partial data) is partially fallen in GAP before FB.Therefore corresponding
ToffsetValue range are as follows:As t 'offsetMeet 0ms < t 'offsetWhen < 4.701ms,
The GAP can be successfully received SB, and then complete BSIC confirmation.In conjunction with above-mentioned constraint, Δ can be obtainedintra_gapValue is
Above-mentioned formula is arranged, can be obtained:
M*T51_frame+tfb_sb_diff_intra_51_frame=N*Tgap+Δintra_gap
Therefore, most meet 0ms < t ' as long as findingoffsetThe minimum N value of < 4.701ms, then completion that can be most fast
SB is received.Due to not carrying frame number in FB, although FB confirms successfully, the frame number of FB can not be also obtained.It needs to calculate in this way
The corresponding N value of all possible frame number FB out.Due to the frame number and Δ of FBintra_gapValue can arrange, thus can by it is all can
Energy situation lists the minimum value for calculating N.
By calculating it follows that working asWhen, the value of N is minimum.And the SB received is just 51 multiple
And then the SB of the FB in frame.At this moment the value of N are as follows:
The minimum value of table 4N
Such as: the GAP period is 40ms, and the GAP that number is n receives preceding part FB and detects successfully, according to confirmation result
It can obtain toffset=4.8ms captures the first half of FB.Can be obtained according to above-mentioned conclusion: the GAP that number is n+12 can be at
Function receives SB.And initial position of the SB with respect to GAP isSB partial data can be only received, also
Be say fromStart to receive.
In the embodiment of the present application, it is further proposed to obtain the position GAP that can receive SB according to following special circumstances
Method.
UE timing changes
(the adjustment t when biggish timing adjustment occurs in the holotype LTE of UEadj), Δintra_gapValue it is bigger than normal, having can
The absolute position of GAP can be caused to change, to scene as shown in figure 11 occur: may cause SB have part fall in
The outside of GAP.Δ can be modified thusintra_gapValue, takeOrIt is hereby achieved that N value adjusted,
Shown in table 5 specific as follows.
The minimum value of N when table 5UE timing changes
In addition, above scheme, which can be equally used in GAP, completely receives FB, and FB falls in the scene of the tail portion GAP.Use
SB when FB is completely received receives processing scheme, and GAP after 240ms is received, when occurring timing adjustment in this way
It is fallen in outside GAP it is possible that there is SB, i.e., as shown in figure 12.
That is: in the case where timing adjustment occurs in UE, being had received when FB blind examination is successful and numbers the GAP for being n
Part include FB data, institute received part include FB data be FB data in front timesharing；Alternatively, determining in UE
When adjustment in the case where, when FB blind examination success and number the GAP for being n and completely have received the data comprising FB, while FB is fallen in
The tail portion of used GAP, wherein n is nonnegative integer；
Then when the GAP period is 40ms, number is n+19 or the GAP of n+25 can receive SB；It is when the GAP period
When 80ms, number is n+13 or the GAP of n+16 can receive SB.
Such as: the GAP period is 40ms, and the GAP that number is n receives FB and detects successfully, and FB falls in the edge of GAP.
And timing adjustment occurs in UE after the completion of FB capture, can be obtained according to table 5: in number be n+19 or the GAP of n+25 can successfully connect
Receive SB.And initial position of the SB with respect to GAP isSB partial data can only be received.It realizes
When need to remain for the GAP of n+19 and n+25 in advance the frequency point SB receive.
To sum up, under LTE mode provided in an embodiment of the present invention in SB acquisition methods and acquisition system, when FB blind examination
When success, the position GAP that can receive SB is obtained, SB inspection is carried out by the GAP on the position GAP that can receive SB
It surveys, thus avoids caused GAP waste when blind examination SB.In addition, SB acquisition methods and being obtained under LTE mode provided by the invention
It takes in system, when FB blind examination is unsuccessful, SB blind examination is carried out to received data, the chance for obtaining SB is increased and improves
The utilization rate of GAP.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (18)
1. SB acquisition methods under a kind of LTE mode characterized by comprising
It receives data and carries out FB blind examination；
When FB blind examination success, the position GAP that can receive SB is obtained；By on the position GAP that can receive SB
GAP carry out SB detection；
When FB blind examination is unsuccessful, SB blind examination is carried out to received data；
When FB blind examination success and completely have received the data comprising FB, and the initial position distance GAP of FB can receive data
End position is less thanWhen, the position GAP that can receive SB obtains according to the following formula:
N*Tgap=M*T51_frame+tfb_sb_diff_intra_51_frame
Wherein, Tgap: the period of GAP, value are 40ms or 80ms；
N: it can receive GAP number between GAP used in SB GAP and FB blind examination success；
T51_frame: the length of 51 multi-frames, value are
Complete 51 multi-frame number between M:FB and SB；
tfb_sb_diff_intra_51_frame: timing offset in the frame between FB and SB.
2. SB acquisition methods under LTE mode as described in claim 1, which is characterized in that according to differing TDMA between FB and SB
The number of frame, tfb_sb_diff_intra_51_frameValue it is as follows:
When differing 1 TDMA frame, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 11 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 21 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 31 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 41 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
3. SB acquisition methods under LTE mode as described in claim 1, which is characterized in that when FB blind examination success and to number be n
GAP when completely having received the data comprising FB, wherein n is nonnegative integer；
Then when the GAP period is 40ms, the GAP that number is n+6 can receive SB；When the GAP period is 80ms, number n+
3 GAP can receive SB.
4. SB acquisition methods under a kind of LTE mode characterized by comprising
It receives data and carries out FB blind examination；
When FB blind examination success, the position GAP that can receive SB is obtained；By on the position GAP that can receive SB
GAP carry out SB detection；
When FB blind examination is unsuccessful, SB blind examination is carried out to received data；
When FB blind examination success and the data that part includes FB are had received, the received part of institute includes the data of FB in FB data
Rear portion timesharing, then FB blind examination success GAP used can receive SB.
5. SB acquisition methods under a kind of LTE mode characterized by comprising
It receives data and carries out FB blind examination；
When FB blind examination success, the position GAP that can receive SB is obtained；By on the position GAP that can receive SB
GAP carry out SB detection；
When FB blind examination is unsuccessful, SB blind examination is carried out to received data；
When FB blind examination success and complete FB data are had received, and the initial position distance GAP of FB can receive the end of data
Position is more thanWhen, then FB blind examination success GAP used can receive SB.
6. SB acquisition methods under a kind of LTE mode characterized by comprising
It receives data and carries out FB blind examination；
When FB blind examination success, the position GAP that can receive SB is obtained；By on the position GAP that can receive SB
GAP carry out SB detection；
When FB blind examination is unsuccessful, SB blind examination is carried out to received data；
When FB blind examination success and the data that part includes FB are had received, the received part of institute includes the data of FB in FB data
Front timesharing, the position GAP that can receive SB obtains according to the following formula:
M*T51_frame+tfb_sb_diff_intra_51_frame=N*Tgap+Δintra_gap
Wherein, Tgap: the period of GAP, value are 40ms or 80ms；
N: it can receive GAP number between GAP used in SB GAP and FB blind examination success；
T51_frame: the length of 51 multi-frames, value are
Complete 51 multi-frame number between M:FB and SB；
tfb_sb_diff_intra_51_frame: timing offset in the frame between FB and SB；
Δintra_gap: the offset in GAP, value range are (- Tgap,Tgap)。
7. SB acquisition methods under LTE mode as claimed in claim 6, which is characterized in that the Δintra_gapValue be
8. SB acquisition methods under LTE mode as claimed in claim 6, which is characterized in that when FB blind examination success and to number be n
GAP have received part include FB data, institute received part include FB data be FB data in front timesharing,
In, n is nonnegative integer；
Then when the GAP period is 40ms, the GAP that number is n+12 can receive SB；When the GAP period is 80ms, number n
+ 6 GAP can receive SB.
9. SB acquisition methods under a kind of LTE mode characterized by comprising
It receives data and carries out FB blind examination；
When FB blind examination success, the position GAP that can receive SB is obtained；By on the position GAP that can receive SB
GAP carry out SB detection；
When FB blind examination is unsuccessful, SB blind examination is carried out to received data；
In the case where timing adjustment occurs in UE, the number that part includes FB is had received when FB blind examination is successful and numbers the GAP for being n
According to, received part include FB data be FB data in front timesharing；Alternatively, there is the case where timing adjustment in UE
Under, the data comprising FB are completely had received when FB blind examination is successful and numbers the GAP for being n, while FB falls in used GAP's
Tail portion, wherein n is nonnegative integer；
Then when the GAP period is 40ms, number is n+19 or the GAP of n+25 can receive SB；It is 80ms when the GAP period
When, number is n+13 or the GAP of n+16 can receive SB.
10. SB obtains system under a kind of LTE mode characterized by comprising
First processing module, to receive data and carry out FB blind examination；
Second processing module, to obtain the position GAP that can receive SB when FB blind examination success；It can be connect by described
The GAP received on the position GAP of SB carries out SB detection；When FB blind examination is unsuccessful, SB blind examination is carried out to received data；
When FB blind examination is successful and completely has received the data comprising FB, and the initial position distance GAP of FB can receive data
End position be less thanWhen, the position GAP that can receive SB obtains according to the following formula:
N*Tgap=M*T51_frame+tfb_sb_diff_intra_51_frame
Wherein, Tgap: the period of GAP, value are 40ms or 80ms；
N: it can receive GAP number between GAP used in SB GAP and FB blind examination success；
T51_frame: the length of 51 multi-frames, value are
Complete 51 multi-frame number between M:FB and SB；
tfb_sb_diff_intra_51_frame: timing offset in the frame between FB and SB.
11. SB obtains system under LTE mode as claimed in claim 10, which is characterized in that differed according between FB and SB
The number of TDMA frame, tfb_sb_diff_intra_51_frameValue it is as follows:
When differing 1 TDMA frame, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 11 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 21 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 31 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
When differing 41 TDMA frames, then t between FB and SBfb_sb_diff_intra_51_frameFor
12. SB obtains system under LTE mode as claimed in claim 10, which is characterized in that when FB blind examination success and number
When completely having received the data comprising FB for the GAP of n, wherein n is nonnegative integer；
Then when the GAP period is 40ms, the GAP that number is n+6 can receive SB；When the GAP period is 80ms, number n+
3 GAP can receive SB.
13. SB obtains system under a kind of LTE mode characterized by comprising
First processing module, to receive data and carry out FB blind examination；
Second processing module, to obtain the position GAP that can receive SB when FB blind examination success；It can be connect by described
The GAP received on the position GAP of SB carries out SB detection；When FB blind examination is unsuccessful, SB blind examination is carried out to received data；
When FB blind examination success and the data that part includes FB are had received, the received part of institute includes the data of FB in FB data
Rear portion timesharing, then FB blind examination success GAP used can receive SB.
14. SB obtains system under a kind of LTE mode characterized by comprising
First processing module, to receive data and carry out FB blind examination；
Second processing module, to obtain the position GAP that can receive SB when FB blind examination success；It can be connect by described
The GAP received on the position GAP of SB carries out SB detection；When FB blind examination is unsuccessful, SB blind examination is carried out to received data；
When FB blind examination success and complete FB data are had received, and the initial position distance GAP of FB can receive the end of data
Position is more thanWhen, then FB blind examination success GAP used can receive SB.
15. SB obtains system under a kind of LTE mode characterized by comprising
First processing module, to receive data and carry out FB blind examination；
Second processing module, to obtain the position GAP that can receive SB when FB blind examination success；It can be connect by described
The GAP received on the position GAP of SB carries out SB detection；When FB blind examination is unsuccessful, SB blind examination is carried out to received data；
When FB blind examination success and the data that part includes FB are had received, the received part of institute includes the data of FB in FB data
Front timesharing, the position GAP that can receive SB obtains according to the following formula:
M*T51_frame+tfb_sb_diff_intra_51_frame=N*Tgap+Δintra_gap
Wherein, Tgap: the period of GAP, value are 40ms or 80ms；
N: it can receive GAP number between GAP used in SB GAP and FB blind examination success；
T51_frame: the length of 51 multi-frames, value are
Complete 51 multi-frame number between M:FB and SB；
tfb_sb_diff_intra_51_frame: timing offset in the frame between FB and SB；
Δintra_gap: the offset in GAP, value range are (- Tgap,Tgap)。
16. SB obtains system under LTE mode as claimed in claim 15, which is characterized in that the Δintra_gapValue be
17. SB obtains system under LTE mode as claimed in claim 15, which is characterized in that when FB blind examination success and number
For n GAP have received part include FB data, institute received part include FB data be FB data in front timesharing,
Wherein, n is nonnegative integer；
Then when the GAP period is 40ms, the GAP that number is n+12 can receive SB；When the GAP period is 80ms, number n
+ 6 GAP can receive SB.
18. SB obtains system under a kind of LTE mode characterized by comprising
First processing module, to receive data and carry out FB blind examination；
Second processing module, to obtain the position GAP that can receive SB when FB blind examination success；It can be connect by described
The GAP received on the position GAP of SB carries out SB detection；When FB blind examination is unsuccessful, SB blind examination is carried out to received data；
In the case where timing adjustment occurs in UE, the number that part includes FB is had received when FB blind examination is successful and numbers the GAP for being n
According to, received part include FB data be FB data in front timesharing；Alternatively, there is the case where timing adjustment in UE
Under, the data comprising FB are completely had received when FB blind examination is successful and numbers the GAP for being n, while FB falls in used GAP's
Tail portion, wherein n is nonnegative integer；
Then when the GAP period is 40ms, number is n+19 or the GAP of n+25 can receive SB；It is 80ms when the GAP period
When, number is n+13 or the GAP of n+16 can receive SB.
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