CN102612131A - Method and system for enabling secondary synchronization sequences to carry system information - Google Patents

Method and system for enabling secondary synchronization sequences to carry system information Download PDF

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CN102612131A
CN102612131A CN2011100234373A CN201110023437A CN102612131A CN 102612131 A CN102612131 A CN 102612131A CN 2011100234373 A CN2011100234373 A CN 2011100234373A CN 201110023437 A CN201110023437 A CN 201110023437A CN 102612131 A CN102612131 A CN 102612131A
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secondary synchronization
cell group
sequence
mapping
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杨扬
夏树强
梁春丽
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a method for enabling secondary synchronization sequences to carry system information. The method comprises the following steps of: mapping identification information of cell groups into two binary secondary synchronization sequences corresponding to secondary synchronization channels; and when each frame of data is sent, respectively sending the secondary synchronization sequences with the serial numbers being (S1(t), S2(t)) and (S2(t), S1(t)) into the first subframe and the sixth subframe of the current frame, wherein t is identifications of the cell groups. The invention also discloses a system for enabling the secondary synchronization sequences to carry the system information. In the system, a mapping unit is used for mapping the identification information of the cell groups into the two binary secondary synchronization sequences corresponding to the secondary synchronization channels; and a sending unit is used for respectively sending the secondary synchronization sequences with the serial numbers being (S1(t), S2(t)) and (S2(t), S1(t)) into the first subframe and the sixth subframe of the current frame when each frame of data is sent, wherein t is the identifications of the cell groups. By adoption of the method and the system disclosed by the invention, the information collision can be reduced to the greatest extent, and the implementation is simple and convenient.

Description

Method and system for carrying system information by auxiliary synchronization sequence
Technical Field
The present invention relates to information transmission technology in mobile communication systems, and in particular, to a method and system for an auxiliary synchronization sequence in a downlink synchronization system to carry system information.
Background
In mobile communication systems, there is often a need to use groups of special sequences to carry a set of information, such as: in a synchronization system for the downlink of a mobile communication system, a synchronization sequence is used to carry cell group identification information and frame timing information.
Generally, a downlink synchronization system in a mobile communication system is mainly used for performing a cell search function, and aims to acquire timing and other related system information. The synchronization channel used in the downlink synchronization system is generally divided into two parts: a Primary Synchronization Channel (PSCH) and a Secondary Synchronization Channel (SSCH), wherein the Secondary Synchronization Channel is formed by two binary sequences with a length of N cascaded in a frequency domain, and carries cell group identification information and frame timing information. Here, the frame timing information refers to the subframe in which the SSCH sequence is transmitted, and the SSCH sequence is generally transmitted twice in the first and sixth subframes of a radio frame, as shown in fig. 1.
Fig. 1 shows a 10ms radio frame, which includes 10 1ms subframes, in the first subframe and the sixth subframe, the black filled region represents the secondary synchronization channel, and the slashed region represents the primary synchronization channel, and it can be seen that the sequence number combinations transmitted twice on the secondary synchronization channel of the first and the sixth subframes are (S) respectively1(t)，S2(t))，(S2(t)，S1(t)). Wherein S is1(t) and S2(t) denotes the sequence number of the secondary synchronization channel sequence and the secondary synchronization sequence number SSC, respectively1And SSC2And t is cell group identification.
In the prior art, assuming that the SSCH sequences need to carry X cell group identification information and the frame timing information has Y, X × Y pieces of information need to be selected from all combinations of two N-length SSCH sequences to carry the information. The specific carrying is usually performed by a mapping method, which may be dividing the cell group identifier t by a set value to obtain a quotient S1(t) taking the value obtained by modulo the set value as S2(t) of (d). However, such processing is not only relatively complex to implement, but also easily causes information of a plurality of cells to be mapped onto the same secondary synchronization channel sequence, thereby causing information collision and affecting information transmission.
Therefore, how to carry the cell group identification information and the frame timing information by the SSCH sequence in a simple and easy manner, and to facilitate detection, recovery and extraction of the receiving end User Equipment (UE), and at the same time, to reduce the collision of the carried information is an important problem to be solved urgently.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method and a system for carrying system information by a secondary synchronization sequence, which can reduce information collision to the maximum extent and are simple and convenient to implement.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for carrying system information by a secondary synchronization sequence comprises the following steps:
mapping the cell group identification information to two binary auxiliary synchronization sequences corresponding to the auxiliary synchronization channels; wherein,
the number of the auxiliary synchronization sequences is 31, the sequence numbers of the auxiliary synchronization sequences are 0, 1, 30 respectively, the number of the cell group identifications is 168, and the sequence numbers of the cell group identifications are 0, 1, 2, 167 respectively; the sequence number of the binary secondary synchronization sequence corresponding to the sequence number t of the cell group identifier is S1(t)，S2(t), the mapping table used in the mapping is:
t S1(t) S2(t) t S1(t) S2(t) t S1(t) S2(t) T S1(t) S2(t) t S1(t) S2(t)
0 0 1 34 4 6 68 9 12 102 15 19 136 22 27
1 1 2 35 5 7 69 10 13 103 16 20 137 23 28
2 2 3 36 6 8 70 11 14 104 17 21 138 24 29
3 3 4 37 7 9 71 12 15 105 18 22 139 25 30
4 4 5 38 8 10 72 13 16 106 19 23 140 0 6
5 5 6 39 9 11 73 14 17 107 20 24 141 1 7
6 6 7 40 10 12 74 15 18 108 21 25 142 2 8
7 7 8 41 11 13 75 16 19 109 22 26 143 3 9
8 8 9 42 12 14 76 17 20 110 23 27 144 4 10
9 9 10 43 13 15 77 18 21 111 24 28 145 5 11
10 10 11 44 14 16 78 19 22 112 25 29 146 6 12
11 11 12 45 15 17 79 20 23 113 26 30 147 7 13
12 12 13 46 16 18 80 21 24 114 0 5 148 8 14
13 13 14 47 17 19 81 22 25 115 1 6 149 9 15
14 14 15 48 18 20 82 23 26 116 2 7 150 10 16
15 15 16 49 19 21 83 24 27 117 3 8 151 11 17
16 16 17 50 20 22 84 25 28 118 4 9 152 12 18
17 17 18 51 21 23 85 26 29 119 5 10 153 13 19
18 18 19 52 22 24 86 27 30 120 6 11 154 14 20
19 19 20 53 23 25 87 0 4 121 7 12 155 15 21
20 20 21 54 24 26 88 1 5 122 8 13 156 16 22
21 21 22 55 25 27 89 2 6 123 9 14 157 17 23
22 22 23 56 26 28 90 3 7 124 10 15 158 18 24
23 23 24 57 27 29 91 4 8 125 11 16 159 19 25
24 24 25 58 28 30 92 5 9 126 12 17 160 20 26
25 25 26 59 0 3 93 6 10 127 13 18 161 21 27
26 26 27 60 1 4 94 7 11 128 14 19 162 22 28
27 27 28 61 2 5 95 8 12 129 15 20 163 23 29
28 28 29 62 3 6 96 9 13 130 16 21 164 24 30
29 29 30 63 4 7 97 10 14 131 17 22 165 0 7
30 0 2 64 5 8 98 11 15 132 18 23 166 1 8
31 1 3 65 6 9 99 12 16 133 19 24 167 2 9
32 2 4 66 7 10 100 13 17 134 20 25
33 3 5 67 8 11 101 14 18 135 21 26
when each frame of data is transmitted, the sequence number is (S) transmitted in the first sub-frame and the sixth sub-frame of the current frame1(t)，S2(t))、(S2(t)，S1(t)) of the primary synchronization sequence.
Wherein, the mapping mode for mapping the cell group identification information to two binary secondary synchronization sequences corresponding to the secondary synchronization channel is specifically as follows: setting 7 segments of piecewise function according to the value range of the cell group identification t, and mapping the cell group identification information to the used secondary synchronization sequence serial number S1(t)、S2(t) above.
Wherein, the 7-segment piecewise function specifically comprises:
if t is 0-29, n is 1, S1(t)＝t，S2(t)＝S1(t)+n；
If t is more than or equal to 30 and less than or equal to 58, n is 2, S1(t)＝t-30，S2(t)＝S1(t)+n；
If t is 59-86, n is 3, S1(t)＝t-59，S2(t)＝S1(t)+n；
If t is more than 87 and less than 113, n is 4, S1(t)＝t-87，S2(t)＝S1(t)+n；
If t is more than or equal to 114 and less than or equal to 139, n is 5, S1(t)＝t-114，S2(t)＝S1(t)+n；
If t is more than 140 and less than 164, n is 6, S1(t)＝t-140，S2(t)＝S1(t)+n；
If t is not less than 165 and not more than 169, n is 7, S1(t)＝t-165，S2(t)＝S1(t)+n；
Wherein n is a segment number.
A system for carrying system information with a secondary synchronization sequence, the system comprising: a mapping unit and a transmitting unit; wherein,
the mapping unit is used for mapping the cell group identification information into two binary secondary synchronization sequences corresponding to the secondary synchronization channels; the number of the secondary synchronization sequences is 31, the sequence numbers of the secondary synchronization sequences are 0, 1, 30 respectively, the number of the cell group identifications is 168, and the sequence numbers of the cell group identifications are 0, 1, 2, 167 respectively; the sequence number of the binary secondary synchronization sequence corresponding to the sequence number t of the cell group identifier is S1(t)，S2(t), the mapping table used in the mapping is:
t S1(t) S2(t) t S1(t) S2(t) t S1(t) S2(t) T S1(t) S2(t) t S1(t) S2(t)
0 0 1 34 4 6 68 9 12 102 15 19 136 22 27
1 1 2 35 5 7 69 10 13 103 16 20 137 23 28
2 2 3 36 6 8 70 11 14 104 17 21 138 24 29
3 3 4 37 7 9 71 12 15 105 18 22 139 25 30
4 4 5 38 8 10 72 13 16 106 19 23 140 0 6
5 5 6 39 9 11 73 14 17 107 20 24 141 1 7
6 6 7 40 10 12 74 15 18 108 21 25 142 2 8
7 7 8 41 11 13 75 16 19 109 22 26 143 3 9
8 8 9 42 12 14 76 17 20 110 23 27 144 4 10
9 9 10 43 13 15 77 18 21 111 24 28 145 5 11
10 10 11 44 14 16 78 19 22 112 25 29 146 6 12
11 11 12 45 15 17 79 20 23 113 26 30 147 7 13
12 12 13 46 16 18 80 21 24 114 0 5 148 8 14
13 13 14 47 17 19 81 22 25 115 1 6 149 9 15
14 14 15 48 18 20 82 23 26 116 2 7 150 10 16
15 15 16 49 19 21 83 24 27 117 3 8 151 11 17
16 16 17 50 20 22 84 25 28 118 4 9 152 12 18
17 17 18 51 21 23 85 26 29 119 5 10 153 13 19
18 18 19 52 22 24 86 27 30 120 6 11 154 14 20
19 19 20 53 23 25 87 0 4 121 7 12 155 15 21
20 20 21 54 24 26 88 1 5 122 8 13 156 16 22
21 21 22 55 25 27 89 2 6 123 9 14 157 17 23
22 22 23 56 26 28 90 3 7 124 10 15 158 18 24
23 23 24 57 27 29 91 4 8 125 11 16 159 19 25
24 24 25 58 28 30 92 5 9 126 12 17 160 20 26
25 25 26 59 0 3 93 6 10 127 13 18 161 21 27
26 26 27 60 1 4 94 7 11 128 14 19 162 22 28
27 27 28 61 2 5 95 8 12 129 15 20 163 23 29
28 28 29 62 3 6 96 9 13 130 16 21 164 24 30
29 29 30 63 4 7 97 10 14 131 17 22 165 0 7
30 0 2 64 5 8 98 11 15 132 18 23 166 1 8
31 1 3 65 6 9 99 12 16 133 19 24 167 2 9
32 2 4 66 7 10 100 13 17 134 20 25
33 3 5 67 8 11 101 14 18 135 21 26
the sending unit is used for respectively sending the serial numbers (S) in the first sub-frame and the sixth sub-frame of the current frame when sending each frame of data1(t)，S2(t))、(S2(t)，S1(t)) a secondary synchronization sequence; wherein t is a cell group identifier.
The mapping unit is further used for setting 7 segments of piecewise functions according to the value range of the cell group identification t when mapping the cell group identification information to two binary auxiliary synchronization sequences corresponding to the auxiliary synchronization channel, and mapping the cell group identification information to the used auxiliary synchronization sequence number S1(t)、S2(t) above.
Wherein, the 7-segment piecewise function specifically comprises:
if t is 0-29, n is 1, S1(t)＝t，S2(t)＝S1(t)+n；
If t is more than or equal to 30 and less than or equal to 58, n is 2, S1(t)＝t-30，S2(t)＝S1(t)+n；
If t is 59-86, n is 3, S1(t)＝t-59，S2(t)＝S1(t)+n；
If t is more than 87 and less than 113, n is 4, S1(t)＝t-87，S2(t)＝S1(t)+n；
If t is more than or equal to 114 and less than or equal to 139, n is 5, S1(t)＝t-114，S2(t)＝S1(t)+n；
If t is more than 140 and less than 164, n is 6, S1(t)＝t-140，S2(t)＝S1(t)+n；
If t is not less than 165 and not more than 169, n is 7, S1(t)＝t-165，S2(t)＝S1(t)+n；
Wherein n is a segment number.
Mapping cell group identification information into two binary auxiliary synchronization sequences corresponding to an auxiliary synchronization channel, wherein the number of the auxiliary synchronization sequences is 31, the sequence numbers of the auxiliary synchronization sequences are 0, 1, 30 respectively, the number of the cell group identification is 168, and the sequence numbers of the cell group identification are 0, 1, 2, 167 respectively; the sequence number of the binary secondary synchronization sequence corresponding to the sequence number t of the cell group identifier is S1(t)，S2(t) when mapping is performed, a designated mapping table is adopted, and when each frame of data is transmitted, sequence numbers (S) are respectively transmitted in a first subframe and a sixth subframe of a current frame1(t)，S2(t))、(S2(t)，S1(t)) of the primary synchronization sequence. By adopting the invention, mapping is carried out according to the appointed mapping table, thus greatly reducing information collision and being simple and convenient to realize.
Drawings
Fig. 1 is a schematic diagram of a downlink synchronization system channel frame structure;
fig. 2 is a flowchart illustrating a method for carrying system information by a secondary synchronization sequence according to the present invention.
Detailed Description
The basic idea of the invention is: mapping the cell group identification information to two binary auxiliary synchronization sequences corresponding to an auxiliary synchronization channel, wherein the number of the auxiliary synchronization sequences is 31, the sequence numbers of the auxiliary synchronization sequences are 0, 1, 30 respectively, the number of the cell group identifications is 168, and the sequence numbers of the cell group identifications are 0, 1, 2, 167 respectively; the sequence number of the binary secondary synchronization sequence corresponding to the sequence number t of the cell group identifier is S1(t)，S2(t) when mapping is performed, a designated mapping table is adopted, and when each frame of data is transmitted, sequence numbers (S) are respectively transmitted in a first subframe and a sixth subframe of a current frame1(t)，S2(t))、(S2(t)，S1(t)) of the primary synchronization sequence.
The following describes the embodiments in further detail with reference to the accompanying drawings.
A method for carrying system information by a secondary synchronization sequence mainly comprises the following contents:
mapping cell group identification information into two binary auxiliary synchronization sequences corresponding to an auxiliary synchronization channel; when each frame of data is transmitted, the sequence number is (S) transmitted in the first sub-frame and the sixth sub-frame of the current frame1(t)，S2(t))、(S2(t)，S1(t)) of the primary synchronization sequence.
It is assumed here that the number of sequences is 31, with sequence numbers 0, 1.., 30, respectively, and the number of cell group identifiers is 168, with sequence numbers 0, 1, 2.., 167. The binary secondary synchronization sequence number transmitted twice on the secondary synchronization channel of the first and sixth sub-frames is (S)1(t)，S2(t))，(S2(t)，S1(t)). Wherein S is1(t) and S2(t) respectively represent the sequence numbers of the secondary synchronization channel sequences.
Let the cell group ID to be sent be t, and the serial numbers S of its corresponding two binary sequences1(t)，S2(t) is shown in Table 1 below:
t S1(t) S2(t) t S1(t) S2(t) t S1(t) S2(t) T S1(t) S2(t) t S1(t) S2(t)
0 0 1 34 4 6 68 9 12 102 15 19 136 22 27
1 1 2 35 5 7 69 10 13 103 16 20 137 23 28
2 2 3 36 6 8 70 11 14 104 17 21 138 24 29
3 3 4 37 7 9 71 12 15 105 18 22 139 25 30
4 4 5 38 8 10 72 13 16 106 19 23 140 0 6
5 5 6 39 9 11 73 14 17 107 20 24 141 1 7
6 6 7 40 10 12 74 15 18 108 21 25 142 2 8
7 7 8 41 11 13 75 16 19 109 22 26 143 3 9
8 8 9 42 12 14 76 17 20 110 23 27 144 4 10
9 9 10 43 13 15 77 18 21 111 24 28 145 5 11
10 10 11 44 14 16 78 19 22 112 25 29 146 6 12
11 11 12 45 15 17 79 20 23 113 26 30 147 7 13
12 12 13 46 16 18 80 21 24 114 0 5 148 8 14
13 13 14 47 17 19 81 22 25 115 1 6 149 9 15
14 14 15 48 18 20 82 23 26 116 2 7 150 10 16
15 15 16 49 19 21 83 24 27 117 3 8 151 11 17
16 16 17 50 20 22 84 25 28 118 4 9 152 12 18
17 17 18 51 21 23 85 26 29 119 5 10 153 13 19
18 18 19 52 22 24 86 27 30 120 6 11 154 14 20
19 19 20 53 23 25 87 0 4 121 7 12 155 15 21
20 20 21 54 24 26 88 1 5 122 8 13 156 16 22
21 21 22 55 25 27 89 2 6 123 9 14 157 17 23
22 22 23 56 26 28 90 3 7 124 10 15 158 18 24
23 23 24 57 27 29 91 4 8 125 11 16 159 19 25
24 24 25 58 28 30 92 5 9 126 12 17 160 20 26
25 25 26 59 0 3 93 6 10 127 13 18 161 21 27
26 26 27 60 1 4 94 7 11 128 14 19 162 22 28
27 27 28 61 2 5 95 8 12 129 15 20 163 23 29
28 28 29 62 3 6 96 9 13 130 16 21 164 24 30
29 29 30 63 4 7 97 10 14 131 17 22 165 0 7
30 0 2 64 5 8 98 11 15 132 18 23 166 1 8
31 1 3 65 6 9 99 12 16 133 19 24 167 2 9
32 2 4 66 7 10 100 13 17 134 20 25
33 3 5 67 8 11 101 14 18 135 21 26
TABLE 1
Further, a cell group identity t is mapped to S1(t)，S2The mode (t) is as follows: setting 7 segments of piecewise function according to the value range of the cell group identification t, and mapping the cell group identification information to the used secondary synchronization sequence serial number S1(t)、S2(t) above. Here, the 7-segment piecewise function is as follows:
if t is 0-29, n is 1, S1(t)＝t，S2(t)＝S1(t)+n；
If t is more than or equal to 30 and less than or equal to 58, n is 2, S1(t)＝t-30，S2(t)＝S1(t)+n；
If t is 59-86, n is 3, S1(t)＝t-59，S2(t)＝S1(t)+n；
If t is more than 87 and less than 113, n is 4, S1(t)＝t-87，S2(t)＝S1(t)+n；
If t is more than or equal to 114 and less than or equal to 139, n is 5, S1(t)＝t-114，S2(t)＝S1(t)+n；
If t is more than 140 and less than 164, n is 6, S1(t)＝t-140，S2(t)＝S1(t)+n；
If t is not less than 165 and not more than 169, n is 7, S1(t)＝t-165，S2(t)＝S1(t)+n；
Wherein n is a segment number.
In summary, with the above method, the sequence number of the currently transmitted SSCH sequence may be determined according to the frame timing information, and then the cell group identification information and the frame timing information are mapped onto the determined SSCH sequence through the piecewise function for transmission. Therefore, the collision problem caused by mapping the identification information of different cell groups into the same sequence can be greatly reduced, and the method has the characteristics of simplicity, convenience and excellent performance.
The invention is illustrated below.
The flow of the method for carrying system information by the auxiliary synchronization sequence in the invention is shown in fig. 2, and comprises the following steps:
step 201: and determining the sequence number group of the secondary synchronization channel sequence to be transmitted currently.
Here, it may be determined whether the secondary synchronization channel sequence to be transmitted is a primary synchronization channel sequence transmitted for the first time in one radio frame or a secondary synchronization channel sequence transmitted for the second time according to frame timing information of the secondary synchronization sequence currently to be transmitted, and if it is the primary synchronization channel sequence transmitted for the first time, the two secondary synchronization channel sequences are marked as sequence number groups (SSC)1，SSC2)＝(S1(t)，S2(t)); if it is the secondary synchronization channel sequence transmitted for the second time, marking the two secondary synchronization channel sequences as sequence number groups (SSCs)1，SSC2)＝(S2(t)，S1(t))。
Wherein S is1(t) and S2(t) sequence number representing secondary synchronization channel sequence, and SSC1And SSC2And t is cell group identification. Here, as long as S is determined1(t) and S2(t) relationships between, e.g. let S2(t) is always greater than S1(t), it can pass through two secondary synchronization sequence numbers SSC1And SSC2Implicitly carries frame timing information.
Step 202: setting a piecewise function according to the value range of the cell group identification, and mapping the cell group identification information to the used secondary synchronization sequence number S1(t)、S2(t) above.
Here, the division of the piecewise function is related to the value range of the cell group identifier and the available secondary synchronization sequences, generally, t is greater than or equal to 0 and less than or equal to 169, and the number of the available secondary synchronization sequences is 31, so that the sequence number of the secondary synchronization sequence satisfies 0 and less than or equal to SSC1，SSC2Less than or equal to 30. Then, when segmenting, it can be generally divided into seven segments, and the number of cell groups contained in each segment can be divided according to needs, such as: let the first segment contain SSC1、SSC2The maximum value is taken from the cell group, namely 30 cell groups, and then each segment is reduced by one cell group one by one. In practical application, other square segment functions can be adopted, the number of segments is also variable, for example, eight segments, five segments and the like are adopted, and the principle that different cell groups are mapped to the same secondary synchronization sequence to the minimum can be met, so that information collision can be sufficiently reduced.
The following is an example of a preferred piecewise function, in this example, the function is divided into seven segments, the segment number of the piecewise function is n, and the specific piecewise function is:
if t is 0-29, n is 1, S1(t)＝t，S2(t)＝S1(t)+n；
If t is more than or equal to 30 and less than or equal to 58, n is 2, S1(t)＝t-30，S2(t)＝S1(t)+n；
If t is 59-86, n is 3, S1(t)＝t-59，S2(t)＝S1(t)+n；
If t is more than 87 and less than 113, n is 4, S1(t)＝t-87，S2(t)＝S1(t)+n；
If t is more than or equal to 114 and less than or equal to 139, n is 5, S1(t)＝t-114，S2(t)＝S1(t)+n；
If t is more than 140 and less than 164, n is 6, S1(t)＝t-140，S2(t)＝S1(t)+n；
If t is not less than 165 and not more than 169, n is 7, S1(t)＝t-165，S2(t)＝S1(t)+n。
Based on the above-mentioned piecewise function, it can further obtain cell group identification t and auxiliary synchronization sequence number S1(t)、S2(t) mapping relation, wherein the first table gives the cell group identification t and the corresponding auxiliary synchronization sequence number S obtained by the piecewise function1(t)、S2(t) a mapping relationship between the two.
t S1(t) S2(t) t S1(t) S2(t) t S1(t) S2(t) T S1(t) S2(t) t S1(t) S2(t)
0 0 1 34 4 6 68 9 12 102 15 19 136 22 27
1 1 2 35 5 7 69 10 13 103 16 20 137 23 28
2 2 3 36 6 8 70 11 14 104 17 21 138 24 29
3 3 4 37 7 9 71 12 15 105 18 22 139 25 30
4 4 5 38 8 10 72 13 16 106 19 23 140 0 6
5 5 6 39 9 11 73 14 17 107 20 24 141 1 7
6 6 7 40 10 12 74 15 18 108 21 25 142 2 8
7 7 8 41 11 13 75 16 19 109 22 26 143 3 9
8 8 9 42 12 14 76 17 20 110 23 27 144 4 10
9 9 10 43 13 15 77 18 21 111 24 28 145 5 11
10 10 11 44 14 16 78 19 22 112 25 29 146 6 12
11 11 12 45 15 17 79 20 23 113 26 30 147 7 13
12 12 13 46 16 18 80 21 24 114 0 5 148 8 14
13 13 14 47 17 19 81 22 25 115 1 6 149 9 15
14 14 15 48 18 20 82 23 26 116 2 7 150 10 16
15 15 16 49 19 21 83 24 27 117 3 8 151 11 17
16 16 17 50 20 22 84 25 28 118 4 9 152 12 18
17 17 18 51 21 23 85 26 29 119 5 10 153 13 19
18 18 19 52 22 24 86 27 30 120 6 11 154 14 20
19 19 20 53 23 25 87 0 4 121 7 12 155 15 21
20 20 21 54 24 26 88 1 5 122 8 13 156 16 22
21 21 22 55 25 27 89 2 6 123 9 14 157 17 23
22 22 23 56 26 28 90 3 7 124 10 15 158 18 24
23 23 24 57 27 29 91 4 8 125 11 16 159 19 25
24 24 25 58 28 30 92 5 9 126 12 17 160 20 26
25 25 26 59 0 3 93 6 10 127 13 18 161 21 27
26 26 27 60 1 4 94 7 11 128 14 19 162 22 28
27 27 28 61 2 5 95 8 12 129 15 20 163 23 29
28 28 29 62 3 6 96 9 13 130 16 21 164 24 30
29 29 30 63 4 7 97 10 14 131 17 22 165 0 7
30 0 2 64 5 8 98 11 15 132 18 23 166 1 8
31 1 3 65 6 9 99 12 16 133 19 24 167 2 9
32 2 4 66 7 10 100 13 17 134 20 25 168 3 10
33 3 5 67 8 11 101 14 18 135 21 26 169 4 11
Watch 1
In practical application, various mapping relationships can be obtained according to different settings of the piecewise function. For example, mapping in reverse order to Table one: when t is 0, S1(t)、S2(t) 0 and 7, respectively, and when t is 1, S1(t)、S2(t) take 1 and 8, respectively1(t)、S2(t) 23 and 30, respectively, and then, when t is 24, S1(t)、S2(t) 0 and 6, respectively, and when t is 25, S1(t)、S2(t) respectively taking 1 and 7, and so on; or, S1(t) and S2Exchanging values of (t): when t is 0, S1(t)、S2(t) 7 and 0, respectively, and when t is 1, S1(t)、S2(t) respectively taking 8 and 1. Alternatively, S may not be pressed1(t) and S2(t) sequential mapping of differences 1, 2... difference 7 between (t), but skip mapping, e.g. first taking S1(t) and S2(t) a set of values for the difference 2, followed by S1(t) and S2(t) a set of values for the difference 5, and then taking S1(t) and S2(t) a set of values of the difference 1, and so on, provided that within the range of values of t, S1(t) and S2And (t) selecting possible values based on the set piecewise function in a balanced manner.
Step 203: when each frame of data is transmitted, the first sub-frame is transmitted with the sequence number (S)1(t)，S2(t)) in the sixth subframe, the transmission sequence number is (S)2(t)，S1(t)) of the primary synchronization sequence.
A system for carrying system information with a secondary synchronization sequence, the system comprising: a mapping unit and a sending unit. The mapping unit is configured to map the cell group identification information to two binary secondary synchronization sequences corresponding to a secondary synchronization channel, where the number of the secondary synchronization sequences is 31, and the sequence numbers of the secondary synchronization sequences are 0, 1.. and 30, respectively, and the number of the cell group identification is 168, and the sequence numbers of the cell group identification are 0, 1, 2.. and 167, respectively; the sequence number of the binary secondary synchronization sequence corresponding to the sequence number t of the cell group identifier is S1(t)，S2(t), the mapping table used in the mapping is:
t S1(t) S2(t) t S1(t) S2(t) t S1(t) S2(t) T S1(t) S2(t) t S1(t) S2(t)
0 0 1 34 4 6 68 9 12 102 15 19 136 22 27
1 1 2 35 5 7 69 10 13 103 16 20 137 23 28
2 2 3 36 6 8 70 11 14 104 17 21 138 24 29
3 3 4 37 7 9 71 12 15 105 18 22 139 25 30
4 4 5 38 8 10 72 13 16 106 19 23 140 0 6
5 5 6 39 9 11 73 14 17 107 20 24 141 1 7
6 6 7 40 10 12 74 15 18 108 21 25 142 2 8
7 7 8 41 11 13 75 16 19 109 22 26 143 3 9
8 8 9 42 12 14 76 17 20 110 23 27 144 4 10
9 9 10 43 13 15 77 18 21 111 24 28 145 5 11
10 10 11 44 14 16 78 19 22 112 25 29 146 6 12
11 11 12 45 15 17 79 20 23 113 26 30 147 7 13
12 12 13 46 16 18 80 21 24 114 0 5 148 8 14
13 13 14 47 17 19 81 22 25 115 1 6 149 9 15
14 14 15 48 18 20 82 23 26 116 2 7 150 10 16
15 15 16 49 19 21 83 24 27 117 3 8 151 11 17
16 16 17 50 20 22 84 25 28 118 4 9 152 12 18
17 17 18 51 21 23 85 26 29 119 5 10 153 13 19
18 18 19 52 22 24 86 27 30 120 6 11 154 14 20
19 19 20 53 23 25 87 0 4 121 7 12 155 15 21
20 20 21 54 24 26 88 1 5 122 8 13 156 16 22
21 21 22 55 25 27 89 2 6 123 9 14 157 17 23
22 22 23 56 26 28 90 3 7 124 10 15 158 18 24
23 23 24 57 27 29 91 4 8 125 11 16 159 19 25
24 24 25 58 28 30 92 5 9 126 12 17 160 20 26
25 25 26 59 0 3 93 6 10 127 13 18 161 21 27
26 26 27 60 1 4 94 7 11 128 14 19 162 22 28
27 27 28 61 2 5 95 8 12 129 15 20 163 23 29
28 28 29 62 3 6 96 9 13 130 16 21 164 24 30
29 29 30 63 4 7 97 10 14 131 17 22 165 0 7
30 0 2 64 5 8 98 11 15 132 18 23 166 1 8
31 1 3 65 6 9 99 12 16 133 19 24 167 2 9
32 2 4 66 7 10 100 13 17 134 20 25
33 3 5 67 8 11 101 14 18 135 21 26
the sending unit is used for sending the sequence number (S) in the first sub-frame and the sixth sub-frame of the current frame when sending each frame of data1(t)，S2(t))、(S2(t)，S1(t)) of the primary synchronization sequence.
Here, the mapping unit is further configured to set 7 segments of the piecewise function according to a value range of the cell group identifier t when mapping the cell group identifier to two binary secondary synchronization sequences corresponding to the secondary synchronization channel, and map the cell group identifier to the mapped cell group identifierUsing secondary synchronisation sequence numbers S1(t)、S2(t) above.
Here, the 7-segment piecewise function is specifically:
if t is 0-29, n is 1, S1(t)＝t，S2(t)＝S1(t)+n；
If t is more than or equal to 30 and less than or equal to 58, n is 2, S1(t)＝t-30，S2(t)＝S1(t)+n；
If t is 59-86, n is 3, S1(t)＝t-59，S2(t)＝S1(t)+n；
If t is more than 87 and less than 113, n is 4, S1(t)＝t-87，S2(t)＝S1(t)+n；
If t is more than or equal to 114 and less than or equal to 139, n is 5, S1(t)＝t-114，S2(t)＝S1(t)+n；
If t is more than 140 and less than 164, n is 6, S1(t)＝t-140，S2(t)＝S1(t)+n；
If t is not less than 165 and not more than 169, n is 7, S1(t)＝t-165，S2(t)＝S1(t)+n；
Wherein n is a segment number.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (6)

1. A method for carrying system information by a secondary synchronization sequence is characterized by comprising the following steps:
mapping the cell group identification information to two binary auxiliary synchronization sequences corresponding to the auxiliary synchronization channels; wherein,
the number of the auxiliary synchronization sequences is 31, the sequence numbers of the auxiliary synchronization sequences are 0, 1, 30 respectively, the number of the cell group identifications is 168, and the sequence numbers of the cell group identifications are 0, 1, 2, 167 respectively; the sequence number of the binary secondary synchronization sequence corresponding to the sequence number t of the cell group identifier is S1(t)，S2(t) when the above-mentioned enantiomer is carried outThe mapping table adopted during shooting is as follows:
Figure FDA00000446564500011
when each frame of data is transmitted, the sequence number is (S) transmitted in the first sub-frame and the sixth sub-frame of the current frame1(t)，S2(t))、(S2(t)，S1(t)) of the primary synchronization sequence.
2. The method of claim 1, wherein the mapping of the cell group identification information to two binary secondary synchronization sequences corresponding to the secondary synchronization channels is performed in a specific manner: setting 7 segments of piecewise function according to the value range of the cell group identification t, and mapping the cell group identification information to the used secondary synchronization sequence serial number S1(t)、S2(t) above.
3. The method according to claim 2, wherein the 7-segment piecewise function is specifically:
if t is 0-29, n is 1, S1(t)＝t，S2(t)＝S1(t)+n；
If t is more than or equal to 30 and less than or equal to 58, n is 2, S1(t)＝t-30，S2(t)＝S1(t)+n；
If t is 59-86, n is 3, S1(t)＝t-59，S2(t)＝S1(t)+n；
If t is more than 87 and less than 113, n is 4, S1(t)＝t-87，S2(t)＝S1(t)+n；
If t is more than or equal to 114 and less than or equal to 139, n is 5, S1(t)＝t-114，S2(t)＝S1(t)+n；
If t is more than 140 and less than 164, n is 6, S1(t)＝t-140，S2(t)＝S1(t)+n；
If t is not less than 165 and not more than 169, n is 7, S1(t)＝t-165，S2(t)＝S1(t)+n；
Wherein n is a segment number.
4. A system for carrying system information by a secondary synchronization sequence, the system comprising: a mapping unit and a transmitting unit; wherein,
the mapping unit is used for mapping the cell group identification information into two binary secondary synchronization sequences corresponding to the secondary synchronization channels; the number of the secondary synchronization sequences is 31, the sequence numbers of the secondary synchronization sequences are 0, 1, 30 respectively, the number of the cell group identifications is 168, and the sequence numbers of the cell group identifications are 0, 1, 2, 167 respectively; the sequence number of the binary secondary synchronization sequence corresponding to the sequence number t of the cell group identifier is S1(t)，S2(t), the mapping table used in the mapping is:
Figure FDA00000446564500021
Figure FDA00000446564500031
the sending unit is used for respectively sending the serial numbers (S) in the first sub-frame and the sixth sub-frame of the current frame when sending each frame of data1(t)，S2(t))、(S2(t)，S1(t)) a secondary synchronization sequence; wherein t is a cell group identifier.
5. The system of claim 4, wherein the mapping unit is further configured to set 7 segmentation functions according to a value range of the cell group id t and map the cell group id information to the used secondary synchronization sequence number S when mapping the cell group id information to two binary secondary synchronization sequences corresponding to the secondary synchronization channel1(t)、S2(t) above.
6. The system according to claim 5, wherein the 7-segment piecewise function is specifically:
if t is 0-29, n is 1, S1(t)＝t，S2(t)＝S1(t)+n；
If t is more than or equal to 30 and less than or equal to 58, n is 2, S1(t)＝t-30，S2(t)＝S1(t)+n；
If t is 59-86, n is 3, S1(t)＝t-59，S2(t)＝S1(t)+n；
If t is more than 87 and less than 113, n is 4, S1(t)＝t-87，S2(t)＝S1(t)+n；
If t is more than or equal to 114 and less than or equal to 139, n is 5, S1(t)＝t-114，S2(t)＝S1(t)+n；
If t is more than 140 and less than 164, n is 6, S1(t)＝t-140，S2(t)＝S1(t)+n；
If t is not less than 165 and not more than 169, n is 7, S1(t)＝t-165，S2(t)＝S1(t)+n；
Wherein n is a segment number.
CN2011100234373A 2011-01-20 2011-01-20 Method and system for enabling secondary synchronization sequences to carry system information Pending CN102612131A (en)

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US20080268885A1 (en) * 2007-04-30 2008-10-30 Texas Instruments Incorporated Low-complexity primary synchronization sequences
CN101490978A (en) * 2006-04-20 2009-07-22 德克萨斯仪器股份有限公司 Downlink synchronization channel and methods for cellular systems

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CN101490978A (en) * 2006-04-20 2009-07-22 德克萨斯仪器股份有限公司 Downlink synchronization channel and methods for cellular systems
US20080268885A1 (en) * 2007-04-30 2008-10-30 Texas Instruments Incorporated Low-complexity primary synchronization sequences
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