Signal sending apparatus, signal detection apparatus, signal sending and detection system, signal sending method, and signal detection method

• US 10,554,467 B2
• Filed: 08/06/2018
• Issued: 02/04/2020
• Est. Priority Date: 12/31/2014
• 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: Liu, Jianqin, Liu, Jianghua, Wu, Qiang, Zhou, Yongxing
• Primary Examiner(s): Corrielus, Jean B
• Application Number:
  US16/055,353
• Publication Number:
  US 20180343159A1
• Time in Patent Office: 547 Days
• CPC Class Codes: H04J 1/00 Frequency-division multiplex systems H04J14/00 takes precedence
• CPC Class Codes: H04J 11/0073 Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group
• CPC Class Codes: H04J 11/0076 Acquisition of secondary synchronisation channel, e.g. detection of cell-ID group
• CPC Class Codes: H04L 27/2676 Blind, i.e. without using known symbols
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver

Abstract

The present invention provides a signal sending apparatus, a signal detection apparatus, a signal sending and detection system, a signal sending method, and a signal detection method. The apparatus determines a time unit that is in each time window and that is used to transmit a synchronization signal, and transmits the synchronization signal in the determined time unit in each time window. Therefore, a synchronization signal is always located in a time unit that has a fixed location in each time window, so that a device at a receive end needs to perform detection only in a fixed time unit in each time window, thereby reducing complexity of designing and detecting the synchronization signal.

Claims

1. A signal detection method, comprising:

obtaining synchronization signal information;

determining, according to the synchronization signal information, a time unit for detecting a synchronization signal from a base station in a time window, wherein the time unit comprises a j^th time unit in the time window, the time window comprises S time units, wherein 1≤

j≤

S, j and S are integers; and

detecting the synchronization signal during the j^th time unit in the time window.

2. The method according to claim 1, wherein the synchronization signal information comprises the time unit.

3. The method according to claim 2, further comprising:

determining broadcast channel time units used for detecting the broadcast channel in T consecutive time windows, wherein T is an integer greater than 0, wherein the broadcast channel time units used for detecting the broadcast channel are j^th time units in the T consecutive time windows; and

detecting the broadcast channel in the broadcast channel time units.

4. The method according to claim 3, further comprising:

obtaining broadcast channel information; and

determining, according to the broadcast channel information, the broadcast channel time units for detecting the broadcast channel in the T consecutive time windows, wherein the broadcast channel information comprises;

a quantity of the T consecutive time windows, and a broadcast channel time unit for detecting the broadcast channel in a time window of the T consecutive time windows.

5. The method according to claim 1, wherein a sequence corresponding to the synchronization signal is acquired by interleaving a first sub-sequence d(2n) with a second sub-sequence d(2n+1), wherein the first subsequence is acquired based on a first M sequence and a second M sequence, and the second subsequence is acquired based on a first M sequence, a second M sequence, and a third M sequence.

6. The method according to claim 1, further comprising:

determining a downlink measurement time unit for measuring a downlink measurement reference signal in the time window, wherein the downlink measurement time unit comprises the j^th time unit in the time window;

performing channel quality measurement on the downlink measurement reference signal in the downlink measurement time unit.

7. The method according to claim 1, wherein the j^th time unit is associated with a beam.

8. The method according to claim 1, wherein the synchronization signal information comprises the j^th time unit and a parameter m, the parameter m is the total quantity of resources for receiving the PBCH, PSS and SSS in the time window.

9. A signal detection apparatus, comprising:

a transceiver, configured to obtain synchronization signal information;

a processor, configured to determine, according to the synchronization signal information, a time unit for detecting a synchronization signal from a base station in a time window, wherein the time unit comprises a j^th time unit in the time window, the time window comprises S time units, wherein 1≤

j≤

S, j and S are integers; and

the transceiver, configured to detect the synchronization signal during the j^th time unit in the time window.

10. The apparatus according to claim 9, wherein the synchronization signal information comprises the time unit.

11. The apparatus according to claim 10, wherein:

the processor is further configured to determine broadcast channel time units for detecting the broadcast channel in T consecutive time windows, wherein T is an integer greater than 0, wherein the broadcast channel time units are j^th time units in the T consecutive time windows; and

the transceiver is further configured to detect the broadcast channel in the broadcast channel time units.

12. The apparatus according to claim 11, wherein:

the transceiver is further configured to obtain broadcast channel information;

the processor is further configured to determine, according to the broadcast channel information, the broadcast channel time units for detecting the broadcast channel in the T consecutive time windows, wherein the broadcast channel information comprises;

a quantity of the T consecutive time windows, and a broadcast channel time unit used for detecting the broadcast channel in a time window of the T consecutive time windows.

13. The apparatus according to claim 9, wherein a sequence corresponding to the synchronization signal is acquired by interleaving a first subsequence d(2n) with a second subsequence d(2n+1), wherein the first subsequence is acquired based on a first M sequence and a second M sequence, and the second subsequence is acquired based on a first M sequence, a second M sequence, and a third M sequence.

14. The apparatus according to claim 9, wherein:

the processor is further configured to determine a downlink measurement time unit for measuring a downlink measurement reference signal in the time window, wherein the downlink measurement time unit comprises the j^th time unit in the time window;

the transceiver is further configured to perform channel quality measurement on the downlink measurement reference signal in the downlink measurement time unit.

15. The apparatus according to claim 9, wherein the j^th time unit is associated with a beam.

16. The apparatus according to claim 9, wherein the synchronization signal information comprises the j^th time unit and a parameter m, the parameter m is the total quantity of resources for receiving the PBCH, PSS and SSS in the time window.

17. A non-transitory computer-readable storage medium comprising instructions which, when executed by a computer, cause the computer to:

obtaining synchronization signal information;

determine, according to the synchronization signal information, a time unit for detecting a synchronization signal from a base station in a time window, wherein the time unit comprises a j^th time unit in the time window, the time window comprises S time units, wherein 1≤

j≤

S, j and S are integers; and

detect the synchronization signal during the j^th time unit in the time window.