Method and apparatus for sequence distributing and sequence processing in communication system

• US 10,305,661 B2
• Filed: 02/17/2016
• Issued: 05/28/2019
• Est. Priority Date: 09/30/2006
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Qu, Bingyu, He, Yujuan
• Primary Examiner(s): Nguyen, Khai M
• Application Number:
  US15/045,270
• Publication Number:
  US 20160308650A1
• Time in Patent Office: 1,196 Days
• Field of Search: 455450, 455451, 4554521, 4554522, 4555501
• CPC Class Codes: H04J 13/0062 Zadoff-Chu
• CPC Class Codes: H04J 13/22 Allocation of codes with a zero correlation zone
• CPC Class Codes: H04L 23/02 adapted for orthogonal signalling
• CPC Class Codes: H04L 25/0226 sounding signals per se
• CPC Class Codes: H04L 5/0005 Time-frequency
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0062 Avoidance of ingress interference, e.g. ham radio channels
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A sequence distributing and sequence processing method and apparatus in a communication system are provided. The sequence distributing method includes the following steps: generating sequence groups including a number of sequences, the sequences in the sequence groups are determined according to the sequence time frequency resource occupation manner which is supported by the system; distributing the sequence groups to cells. The method avoids the phenomenon that signaling transmission is needed to distribute the sequences to the cells for different time frequency resource occupation manner, and saves in so far as possible the wireless network transmission resource occupied during the process of distributing the sequences through distributing the sequence groups comprising a number of sequences to the cells.

Claims

1. A method for a user equipment device (UE) to communicate with network side equipment in a cell served by the network side equipment, comprising:

determining, by the UE, a sequence group allocated to the cell, wherein the sequence group includes a plurality of sequences, and each sequence in the sequence group corresponds to a different bandwidth of time-frequency resources;

determining, by the UE, sequence generation information of a sequence in the sequence group according to a bandwidth of time-frequency resources used by the UE;

generating, by the UE, a corresponding sequence according to the sequence generation information;

generating, by the UE, a signal according to the generated sequence; and

transmitting, by the UE, the generated signal to the network side equipment.

2. The method according to claim 1, wherein the sequences in the sequence group comprise one or more of the following:

a constant amplitude zero auto-correlation (CAZAC) sequence,

a fragment of a CAZAC sequence, and

a sequence obtained through combining a CAZAC sequence with a segment of a CAZAC sequence.

3. The method according to claim 2, wherein the CAZAC sequence is a Zadoff-Chu sequence.

4. The method according to claim 3, wherein the sequence generation information of the sequence is an index of a Zadoff-Chu sequence.

5. The method according to claim 2, wherein at least one sequence in the sequence group that corresponds to a first bandwidth of the time-frequency resources has a higher correlation with another sequence in the same sequence group that corresponds to a second bandwidth of the time-frequency resources than with a sequence in another sequence group that corresponds to the second bandwidth of the time-frequency resources, and the first bandwidth is different from the second bandwidth.

6. The method according to claim 5, wherein the sequences in the sequence group are base sequences.

7. The method according to claim 3, wherein two different sequences, corresponding to different bandwidths of the time-frequency resources, whose indexes are r1, r2, are in the sequence group, and the indexes r1 and r2 comply with r1=(k*b1) mod N1 and r2=(k*b2) mod N2;

and wherein the same k indicates the two different sequences belong to a same sequence group, N1 and N2 represents lengths of the two sequences respectively, and b1 and b2 comply with an equation b1*N2−

b2*N1=1.

8. The method according to claim 7, wherein −

N1*0.5<

k<

N1*0.5.

9. The method according to claim 1, wherein the determining, by the UE, the sequence group allocated to the cell comprises:

determining, by the UE, the sequence group allocated to the cell according to identification information of the cell.

10. A user equipment device (UE) in communication with network side equipment in a cell served by the network side equipment, comprising:

a processor, a memory and a transmitter;

wherein the memory is configured to store program instructions for execution by the processor, and the instructions cause the processor to;

determine a sequence group allocated to the cell, wherein the sequence group includes a plurality of sequences, and each sequence in the sequence group corresponds to a different bandwidth of time-frequency resources;

determine sequence generation information of a sequence in the sequence group according to a bandwidth of time-frequency resources used by the UE;

generate a corresponding sequence according to the sequence generation information; and

generate a signal according to the generated sequence; and

wherein the transmitter is configured to transmit the generated signal to the network side equipment.

11. The UE according to claim 10, wherein the sequences in the sequence group comprise one or more of the following:

a constant amplitude zero auto-correlation (CAZAC) sequence, a fragment of a CAZAC sequence, and a sequence obtained through combining a CAZAC sequence with a segment of a CAZAC sequence.

12. The UE according to claim 11, wherein the CAZAC sequence is a Zadoff-Chu sequence.

13. The UE according to claim 12, wherein the sequence generation information of the sequence is an index of a Zadoff-Chu sequence.

14. The UE according to claim 11, wherein at least one sequence in the sequence group that corresponds to a first bandwidth of the time-frequency resources has a higher correlation with another sequence in the same sequence group that corresponds to a second bandwidth of the time-frequency resources than with a sequence in another sequence group that corresponds to the second bandwidth of the time-frequency resources, and the first bandwidth is different from the second bandwidth.

15. The UE according to claim 14, wherein the sequences in the sequence group are base sequences.

16. The UE according to claim 12, wherein two different sequences, corresponding to different bandwidths of the time-frequency resources, whose indexes are r1, r2, are in the sequence group, and the indexes r1 and r2 comply with r1=(k*b1) mod N1 and r2=(k*b2) mod N2;

and wherein the same k indicates the two different sequences belong to a same sequence group, N1 and N2 represents lengths of the two sequences respectively, and b1 and b2 comply with an equation b1*N2−

b2*N1=1.

17. The UE according to claim 16, wherein −

N1*0.5<

k<

N1*0.5.

18. The UE according to claim 10, wherein, in determining the sequence group allocated to the cell, the instructions cause the processor to:

determine the sequence group allocated to the cell according to identification information of the cell.

19. An apparatus, implemented in a user equipment device (UE) which is in communication with network side equipment in a cell served by the network side equipment, the apparatus comprising:

one or more processors and a memory storing program instructions for execution by the processors, wherein the instructions, when executed by the processors, cause the apparatus to;

determine a sequence group allocated to the cell, wherein the sequence group includes a plurality of sequences, and each sequence in the sequence group corresponds to a different bandwidth of time-frequency resources;

determine sequence generation information of a sequence in the sequence group according to a bandwidth of time-frequency resources used by the UE;

generate a corresponding sequence according to the sequence generation information;

generate a signal according to the generated sequence; and

control the UE to transmit the signal to the network side equipment.

20. The apparatus according to claim 19, wherein the sequences in the sequence group comprise one or more of the following:

a constant amplitude zero auto-correlation (CAZAC) sequence, a fragment of a CAZAC sequence, and a sequence obtained through combining a CAZAC sequence with a segment of a CAZAC sequence.

21. The apparatus according to claim 20, wherein the CAZAC sequence is a Zadoff-Chu sequence.

22. The apparatus according to claim 21, wherein the sequences in the sequence group are base sequences.

23. The apparatus according to claim 21, wherein the sequence generation information of the sequence is an index of a Zadoff-Chu sequence.

24. The apparatus according to claim 21, wherein two different sequences, corresponding to different bandwidths of the time-frequency resources, whose indexes are r1, r2, are in the sequence group, and the indexes r1 and r2 comply with r1=(k*b1) mod N1and r2=(k*b2) mod N2;

and wherein the same k indicates the two different sequences belong to a same sequence group, N1 and N2 represents lengths of the two sequences respectively, and b1 and b2 comply with an equation b1*N2-b2*N1=1.

25. The apparatus according to claim 24, wherein −

N1*0.5<

k<

N1*0.5.

26. The apparatus according to claim 20, wherein at least one sequence in the sequence group that corresponds to a first bandwidth of the time-frequency resources has a higher correlation with another sequence in the same sequence group that corresponds to a second bandwidth of the time-frequency resources than with a sequence in another sequence group that corresponds to the second bandwidth of the time-frequency resources, and the first bandwidth is different from the second bandwidth.

27. The apparatus according to claim 19, wherein in determining the sequence group allocated to the cell, the instructions cause the processors to:

determine the sequence group allocated to the cell according to identification information of the cell.

28. A non-transitory computer-readable storage medium storing program instructions for use by a user equipment device (UE), wherein the UE is in communication with network side equipment in a cell served by the network side equipment, and wherein the program instructions, when executed by the UE, cause the UE to perform a process that comprises:

determining a sequence group allocated to the cell, wherein the sequence group includes a plurality of sequences, and each sequence in the sequence group corresponds to a different bandwidth of time-frequency resources;

determining sequence generation information of a sequence in the sequence group according to a bandwidth of time-frequency resources used by the UE;

generating a corresponding sequence according to the sequence generation information; and

generating a signal according to the generated sequence; and

transmitting the generated signal to the network side equipment.

29. The non-transitory storage medium according to claim 28, wherein the sequences in the sequence group comprise one or more of the following:

a constant amplitude zero auto-correlation (CAZAC) sequence, a fragment of a CAZAC sequence, and a sequence obtained through combining a CAZAC sequence with a segment of a CAZAC sequence.

30. The non-transitory storage medium according to claim 29, wherein the CAZAC sequence is a Zadoff-Chu sequence.

31. The non-transitory storage medium according to claim 30, wherein the sequence generation information of the sequence is an index of a Zadoff-Chu sequence.

32. The non-transitory storage medium according to claim 30, wherein at least one sequence in the sequence group that corresponds to a first bandwidth of the time-frequency resources has a higher correlation with another sequence in the same sequence group that corresponds to a second bandwidth of the time-frequency resources than with a sequence in another sequence group that corresponds to the second bandwidth of the time-frequency resources, and the first bandwidth is different from the second bandwidth.

33. The non-transitory storage medium according to claim 32, wherein the sequences in the sequence group are base sequences.

34. The non-transitory storage medium according to claim 30, wherein two different sequences, corresponding to different bandwidths of the time-frequency resources, whose indexes are r1, r2, are in the sequence group, and the indexes r1 and r2 comply with r1=(k*b1) mod N1 and r2=(k*b2) mod N2;

and wherein the same k indicates the two different sequences belong to a same sequence group, N1 and N2 represents lengths of the two sequences respectively, and b1 and b2 comply with an equation b1*N2-b2*N1=1.

35. The non-transitory storage medium according to claim 34, wherein

−

N1*0.5<

k<

N1*0.5.

36. The non-transitory storage medium according to claim 28, wherein in determining the sequence group allocated to the cell, the instructions cause the UE to:

determine the sequence group allocated to the cell according to identification information of the cell.