CN2922298Y - Compound synchronizing signal transmitting and receiving device - Google Patents
Compound synchronizing signal transmitting and receiving device Download PDFInfo
- Publication number
- CN2922298Y CN2922298Y CN 200620123901 CN200620123901U CN2922298Y CN 2922298 Y CN2922298 Y CN 2922298Y CN 200620123901 CN200620123901 CN 200620123901 CN 200620123901 U CN200620123901 U CN 200620123901U CN 2922298 Y CN2922298 Y CN 2922298Y
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- China
- Prior art keywords
- synchronizing signal
- frame
- sub
- receiving system
- emitter
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Abstract
The utility model discloses a compound synchronizing signal transmitting and receiving device, wherein, the compound synchronizing signal transmitting device comprises a sub frame synchronizing signal transmitting device, a frame synchronizing signal transmitting device, and a community reference signal transmitting device, and a recombiner, which produces synchronizing signal and transmits. The compound synchronizing signal receiving device comprises a sub frame synchronizing signal receiving device, a frame synchronizing signal receiving device, and a community reference signal receiving device which decomposes the receiving synchronizing signal. The utility model improves the detection probability of the synchronizing signal efficiently and compresses the accessing time by grade transmitting and grade demodulation.
Description
Technical field
The utility model relates to mobile communication system, relates in particular to the emission of sub-district synchronizing signal in the moving communicating field and obtains the Design of device of cell synchronization information.
Background technology
In mobile communication process, obtaining the synchronization timing relation of downstream signal of cellular cell and the information of sub-district or cell set mark is the first step work of user access network, in the prior art, because the quantity of sub-district mark is more, such as up to a hundred, with the identification one by one from up to a hundred marks of sub-district mark, the recognition time that needs is very long fully, do not meet the short time delay demand that mobile communication continues, must be shortened.For the physical detection of synchronizing signal, also need to take specific means to improve detection probability simultaneously.
The utility model content
Technical problem to be solved in the utility model provides a kind of device that transmits and receives of composite synchronizing signal, to solve in the prior art, the cellular cell mark is needed identification for a long time, do not meet the short time delay demand that mobile communication continues, the problem that must be shortened, for the physical detection of synchronizing signal, also need to take specific means to improve the problem of detection probability simultaneously.
For solving the problems of the technologies described above, the utility model provides a kind of emitter of composite synchronizing signal, it comprises: the sub-frame sync signal emitter, the frame synchronizing signal emitter, the cell reference signals emitter, and recombiner, wherein, described sub-frame sync signal emitter produces sub-frame sync signal, described frame synchronizing signal emitter produces frame synchronizing signal, described cell reference signals emitter produces cell reference signals, described recombiner on time relationship to sub-frame sync signal, frame synchronizing signal and cell reference signals carry out compound and emission.
Emitter described in the utility model, wherein, the described sub-frame sync signal that described sub-frame sync signal emitter produces is used for determining the subframe timing information; Imply the information of a plurality of cell set in the described frame synchronizing signal that described frame synchronizing signal emitter produces, be used for determining frame timing information and cell group information; The described cell reference signals that described cell reference signals emitter produces is used for determining the mark of certain specific cell in this cell set.
Further, emitter described in the utility model, wherein, described mark is scrambler and spread spectrum.
Emitter described in the utility model, wherein, described sub-frame sync signal emitter, further the sequence by reflection autocorrelation performance excellence aperiodic produces sub-frame sync signal.
Emitter described in the utility model, wherein, described sub-frame sync signal can be the constituting of sign indicating number sequence or above sign indicating number sequence in M sequence, the height.
For solving the problems of the technologies described above, the utility model also provides a kind of receiving system of composite synchronizing signal, and the composite synchronizing signal that receives is decomposed, and it comprises: sub-frame sync signal receiving system, frame synchronizing signal receiving system and cell reference signals receiving system; Wherein, described sub-frame sync signal receiving system, input composite synchronizing signal, output sub-frame sync signal; Described frame synchronizing signal receiving system, input composite synchronizing signal and sub-frame sync signal, output frame synchronizing signal; Described cell reference signals receiving system, input composite synchronizing signal, Primary Common Control Physical Channel and frame synchronizing signal, output cell reference signals.
Receiving system described in the utility model, wherein, the described sub-frame sync signal of described sub-frame sync signal receiving system output is used for determining the subframe timing information, output is simultaneously used for the user; The described frame synchronizing signal of described frame synchronizing signal receiving system output is used for determining frame timing information and cell group information; The described cell reference signals of described cell reference signals receiving system output is used for determining unique sub-district mark, thereby correctly identifies the sub-district.
Further, receiving system described in the utility model, wherein, described mark is scrambler and spread spectrum.
Receiving system described in the utility model, wherein, described sub-frame sync signal receiving system is correlator, matched filter.
Receiving system described in the utility model, wherein, described sub-frame sync signal can be the constituting of sign indicating number sequence or above sign indicating number sequence in M sequence, the height.
The emitter of the sub-district synchronizing signal of the utility model design and to the device of the sub-district synchronizing signal hierarchical demodulation that obtains by classification emission and hierarchical demodulation, has improved the detection probability of synchronizing signal effectively, has compressed turn-on time.
Description of drawings
Fig. 1 is the basic block diagram of the emitter of the described a kind of sub-district of the utility model embodiment synchronizing signal;
Fig. 2 is the basic block diagram of the receiving system of the described a kind of sub-district of the utility model embodiment synchronizing signal;
Fig. 3 is the first chip position view of the described reception synchronizing sub-frame of the utility model embodiment sign indicating number.
Embodiment
The utility model adopts the mode of embodiment to be described in detail in conjunction with concrete application scenarios:
Subframe is basic component unit in the utility model, and frame is made of a plurality of subframes.Frame is composited by 15 subframes in the present embodiment.
As shown in Figure 1, the sequence of sub-frame sync signal emitter 101 reflection autocorrelation performance excellences aperiodic in the emitter of sub-district synchronizing signal, as the M sequence, sign indicating number sequence etc. in the height, or the combination of above sign indicating number sequence, for example a kind of typical producing method is as follows:
Sub-frame sync signal is made of sign indicating number sequence (generalised hierarchical Golaysequence) in the general classification height.Make-up formula is as follows: allow a=＜x
1, x
2, x
3..., x
16＞=＜0,0,0,0,0,0,1,1,0,1,0,1,0,1,1,0＞and
Then to sequence ' a ' repeat produce:
Be the definition (leftmost will be the chip that sends at first in the time slot) of synchronizing sub-frame channel code below:
C
Sub=＜y (0), y (1), y (2) ..., y (255)＞, C
SubIt is exactly a kind of typical sub-frame sync signal.
Frame synchronizing signal emitter 102 is actually by a plurality of subframe signals and is composited, and is 15 in the present embodiment, and a kind of typical emission example is as follows:
Code word { the C of frame synchronizing channel sign indicating number
1..., C
17Add generation by Hadamard sequence and sequence z sequence mould 2.Sequence
Hadamard sequence (OK) can be by matrix H
8Recurrence obtains:
H
0=(0)
The 0th row is positioned at the top layer (full null sequence) of matrix, h
nThe capable sequence of expression Hadamard matrix n.
The code word of frame synchronizing channel is by matrix H
8Per 16 the row in choose one, so 16 kinds of possible code words can be arranged altogether, its yard sequence number is: n=0,16,32,48,64,80,96,112,128,144,160,176,192,208,224,240.
If, h
n(i) and z (i) represent sequences h respectively
nAnd z, i symbol.
N represents n synchronous code preface.The chip that sends at first at each time slot is leftmost symbol.
C
SCH, n=＜h
n(0)+and z (0), h
n(1)+and z (1), h
n(2)+z (2) ..., h
n(255)+and z (255)＞, (above all computings all adopt mould 2 to add)
The binary code word of synchronizing channel is converted into the real number value sequence: ' 0 '-＞'+1 ', ' 1 '-＞' 1 '.
The code word of frame synchronizing signal is defined as C
SCH, n, i.e. { C
1..., C
16}: C
i=C
SCH, i, i=1 ..., 16
Implied the essential information of a plurality of cell set in the frame synchronizing signal.
Cell reference signals emitter 103, the mark of certain specific cell in the emission cell set, its typical emission embodiment is the scrambler and the spread spectrum of certain specific cell of emission.
As shown in Figure 2, the sub-frame sync signal receiving system 201 in the receiving system of sub-district synchronizing signal generally adopts the mode of correlator, matched filter hierarchical demodulation composite synchronizing signal to detect, and is as follows to the exemplary embodiments of the reception of sign indicating number in the general height:
Receive separated into two parts, previous modules A is to use the matching wave filter capture sub-frame sync signal, and a back module B is used to detect the time base at strong basis station.B module output signal CpStartPos has illustrated the position of first chip of the synchronizing sub-frame sign indicating number sequence that receives.It is to calculate out from the peak of the following time slot accumulator of saying:
The length of Cp sequence is 256chip, when peak less than (256-1)
*NrSamples, so
CpStartPos＝PeakPos+(SlotLength-(256-1))
*NrSamples
Receive the first chip of synchronizing sub-frame sign indicating number position: as shown in Figure 3.
For example, when NrSamples is " 1 ", SlotLength is 2560, and the position of PeakPos is 2, CpStartPos=2307 so, and the position that first chip of received signal sequence is described is the place of 2307chip in time delay.
When peak more than or equal to (256-1)
*NrSamples, so
CpStartPos＝PeakPos-(256-1)
*NrSamples
When NrSamples is 2, SlotLength is 2560, and the position of PeakPos is 515, and CpStartPos=5 illustrates that the position of first chip of received signal sequence is 2.5chip in the received signal time delay so.
The value of CpStartPos is to (SlotLength * NrSamples-1) from 0.
The sample rate of " NrSamples " by selecting each chip, base resolution is 1/NrSamples in the time of just may making detected time slot.
Also having an output signal is adding up-AccumOut of the relevant output of several time slots.
Whether reliability information can be used to detect slot synchronization and take place.The average of ReliabInfo=peak value/sampled point.
The peak value of last time slot after peak value herein refers to add up, and average is meant and is added to what a time slot all adopt the average of point.
Frame synchronizing signal receiving system 202 receives composite synchronizing signals and subframe timing information accurately, handles the back and exports cell group information and frame timing information, and exemplary embodiments is as follows:
At first be identification frame synchronizing channel sign indicating number, this is that 256 32 of the long sequence boil down tos that will receive carry out FHT (fast hadamard transform) realization.Following operation is at 256 long hadamard vectors, it will be kept to 32 * 32 hadamard matrixes j capable.
h32j(n)＝(1/8)(sigma(h256n(8n+k)
*h8m(k))
where?n＝0，1?，2，..31
k＝0，1，2，..7
H256n is that the n of 256 * 256 hadamard matrixes is capable
H8m is that the m of 8 * 8 hadamard matrixes is capable
m＝n?mod?8.
The hadamard DUAL PROBLEMS OF VECTOR MAPPING to 32 that receives * 32 hadamard matrixes:
---------------------
First_HadamardNum Rows?of?32×32matrix
(Range) (after?collapsing)
---------------------
0-7 0 to?16
8-15 1 to?17
16-23 2 to?18
. .
. .
120..127 15?to?31
------------------------------------------------------
So just can be by in the time slot detection of FHT output peak value being obtained the information of frame.Computing formula is as follows:
SecShortCode＝(FHTPeakPos-First_HadamardNum/8)+1
Here First_HadamardNum/8 gets its merchant.
Output signal SecShortCode has illustrated the frame swynchronization code that this time slot sends, and its yard serial number range is from 1 to 17.
Next be to carry out cell set to differentiate and frame synchronization.Because 33 possible code characters are arranged, each code character has 16 sign indicating number sequences, therefore can generate 528 judgment variables.The position description of relevant peaks the biasing of scrambler group number and frame.The implication of frame biasing at first is described.
If each time slot sends sequence: 1,1,2,11,6,3,5,15,7,8,8,7,15,3,6,11,2
And the sequence that receives is: 3,6,11,2,1,1,2,11,6,3,5,15,7,8,8,7,15
The frame biasing is exactly 4 so, and the scope of actual frame biasing is from 0～15.
Related operation by continuous 16 time slots (1 frame) just can obtain the sub-district group number.
Cell reference signals receiving system 203 receives composite synchronizing signal, Primary Common Control Physical Channel, cell group information and frame timing information, handle the unique sub-district mark of back output, thereby correctly identify the sub-district, subframe timing accurately simultaneously also output is simultaneously used for the user.
Exemplary embodiments is as follows:
Frame time base biasing is obtained by the frame synchronizing signal receiving system, is assumed to 4, this means that it is 1+ (40690-4*2560) that scrambling code phase departs from the chip sequence number that 4 time slots (position that is first time slot is 1+4=5) therefore begin descrambling from initial phase.This need produce (40690-4*2560) chips of 16 all scramblers, carries out the descrambling of a chip of a chip after alignment.After descrambling, the Primary Common Control Physical Channel of this module despreading down link, ovsf code and parameter spreading factor are input signals, its spreading factor is 256.For the scrambler of each generation, all to carry out symbol being correlated with to symbol with accurate discriminating scrambler.This just means each code word, all carries out plural descrambling, and each symbol of signal is carried out OVSF despreading and integration/clear operation.The absolute value of the integration/clear signal individual symbol of NumberOfSymbols (symbolic number that adds up) that adds up.The scrambler of high correlation is exactly the scrambler that will differentiate.This scrambler is exactly the mark of this sub-district.
Claims (10)
1, a kind of emitter of composite synchronizing signal, it is characterized in that, comprise: sub-frame sync signal emitter, frame synchronizing signal emitter, cell reference signals emitter, and recombiner, wherein, described sub-frame sync signal emitter produces sub-frame sync signal, described frame synchronizing signal emitter produces frame synchronizing signal, described cell reference signals emitter produces cell reference signals, and described recombiner carries out compound to sub-frame sync signal, frame synchronizing signal and cell reference signals on time relationship and emission.
2, emitter as claimed in claim 1 is characterized in that, the described sub-frame sync signal that described sub-frame sync signal emitter produces is used for determining the subframe timing information; Imply the information of a plurality of cell set in the described frame synchronizing signal that described frame synchronizing signal emitter produces, be used for determining frame timing information and cell group information; The described cell reference signals that described cell reference signals emitter produces is used for determining the mark of certain specific cell in this cell set.
3, emitter as claimed in claim 2 is characterized in that, described mark is scrambler and spread spectrum.
4, emitter as claimed in claim 1 is characterized in that, described sub-frame sync signal emitter, and further the sequence by reflection autocorrelation performance excellence aperiodic produces sub-frame sync signal.
5, emitter as claimed in claim 1 is characterized in that, described sub-frame sync signal can be the constituting of sign indicating number sequence or above sign indicating number sequence in M sequence, the height.
6, a kind of receiving system of composite synchronizing signal decomposes the composite synchronizing signal that receives, and it is characterized in that, comprising: sub-frame sync signal receiving system, frame synchronizing signal receiving system and cell reference signals receiving system; Wherein, described sub-frame sync signal receiving system, input composite synchronizing signal, output sub-frame sync signal; Described frame synchronizing signal receiving system, input composite synchronizing signal and sub-frame sync signal, output frame synchronizing signal; Described cell reference signals receiving system, input composite synchronizing signal, Primary Common Control Physical Channel and frame synchronizing signal, output cell reference signals.
7, receiving system as claimed in claim 6 is characterized in that, the described sub-frame sync signal of described sub-frame sync signal receiving system output is used for determining the subframe timing information, and output is simultaneously used for the user; The described frame synchronizing signal of described frame synchronizing signal receiving system output is used for determining frame timing information and cell group information; The described cell reference signals of described cell reference signals receiving system output is used for determining unique sub-district mark, thereby correctly identifies the sub-district.
8, receiving system as claimed in claim 7 is characterized in that, described mark is scrambler and spread spectrum.
9, receiving system as claimed in claim 6 is characterized in that, described sub-frame sync signal receiving system is correlator, matched filter.
10, receiving system as claimed in claim 6 is characterized in that, described sub-frame sync signal can be the constituting of sign indicating number sequence or above sign indicating number sequence in M sequence, the height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123901 CN2922298Y (en) | 2006-07-11 | 2006-07-11 | Compound synchronizing signal transmitting and receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123901 CN2922298Y (en) | 2006-07-11 | 2006-07-11 | Compound synchronizing signal transmitting and receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2922298Y true CN2922298Y (en) | 2007-07-11 |
Family
ID=38254768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620123901 Expired - Fee Related CN2922298Y (en) | 2006-07-11 | 2006-07-11 | Compound synchronizing signal transmitting and receiving device |
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| CN (1) | CN2922298Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102415001A (en) * | 2009-04-29 | 2012-04-11 | Lg电子株式会社 | Method for generating reference signal sequence in multi-antenna wireless communication system and apparatus for same |
| WO2013166720A1 (en) * | 2012-05-11 | 2013-11-14 | Renesas Mobile Corporation | System and method for reference signal transmission to avoid collision |
-
2006
- 2006-07-11 CN CN 200620123901 patent/CN2922298Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102415001A (en) * | 2009-04-29 | 2012-04-11 | Lg电子株式会社 | Method for generating reference signal sequence in multi-antenna wireless communication system and apparatus for same |
| CN102415001B (en) * | 2009-04-29 | 2014-04-02 | Lg电子株式会社 | Method for generating reference signal sequence in multi-antenna wireless communication system and apparatus for same |
| US10038536B2 (en) | 2009-04-29 | 2018-07-31 | Lg Electronics Inc. | Method for generating reference signal sequence in multi-antenna wireless communication system and apparatus for same |
| WO2013166720A1 (en) * | 2012-05-11 | 2013-11-14 | Renesas Mobile Corporation | System and method for reference signal transmission to avoid collision |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070711 Termination date: 20130711 |