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Secondary synchronization signal sequence generation, detection method and device, storage medium, base station, receiver

A technology for auxiliary synchronization signals and sequences, applied in the field of communication, can solve problems such as large cross-correlation, and achieve the effect of reducing the total number of sequences and reducing complexity

Active Publication Date: 2022-05-20
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

However, when the correlation results of multiple frames are accumulated, the cross-correlation between some candidate correlation results based on this way is very large

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  • Secondary synchronization signal sequence generation, detection method and device, storage medium, base station, receiver
  • Secondary synchronization signal sequence generation, detection method and device, storage medium, base station, receiver
  • Secondary synchronization signal sequence generation, detection method and device, storage medium, base station, receiver

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Embodiment Construction

[0043] As mentioned in the background art, the existing scheme adopts two independent ZC sequences as SSS sequences, and the generated SSS sequences have high mutual correlation. For the receiver, when the correlation results of multiple frames are combined according to the received SSS sequence, the synchronization performance of the receiver will be seriously affected due to the high cross-correlation among the correlation results.

[0044] After analysis, the inventors of the present application found that this is because the existing scheme of using two independent ZC sequences as the SSS sequence indicates the cell identity index and the SFN index respectively through two independent ZC sequences, that is, two independent One of the ZC sequences is dedicated to indicate the cell identity index, and the other one is dedicated to indicate the SFN index. This results in that when two SSS sequences have the same cell identity index or SFN index, the two SSS sequences must hav...

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Abstract

A method and device for generating and detecting a secondary synchronization signal sequence, a storage medium, a base station, and a receiver, wherein the secondary synchronization signal sequence includes a first ZC sequence and a second ZC sequence, and the generation method includes: determining information to be indicated Yes, the information pair includes a first information index and a second information index; the information pair is mapped to a root index pair based on a preset mapping relationship, and the preset mapping relationship is the information pair and the root index pair A one-to-one mapping relationship; generating and sending the first ZC sequence and the second ZC sequence based on the root index pair. The scheme provided by the present invention can provide a new secondary synchronization signal sequence, which has the advantage of low cross-correlation, and can minimize the difference between different correlation results when accumulating correlation results of multiple frames while reducing the complexity of the receiver. interrelationships.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for generating and detecting a secondary synchronization signal sequence, a storage medium, a base station, and a receiver. Background technique [0002] In the IoT system, the Signal-Noise Ratio (SNR or S / N for short) that needs to be supported can usually be very low. Therefore, it is necessary to transmit a Physical Broadcast Channel (PBCH) carrying the same Master Information Block (MIB) information in multiple System Frame Numbers (SFN) to reduce the coding rate. Wherein, the PBCH in multiple frames can be sent repeatedly, and different coding schemes or scrambling schemes can also be used according to the SFN. It requires a user equipment (User Equipment, referred to as UE) to at least partially understand the SFN before receiving the MIB. [0003] Therefore, in the synchronization phase, the UE not only needs to detect timing (timing), ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J13/00H04J13/14H04J11/00H04W56/00
CPCH04J13/0062H04J13/14H04J11/0086H04W56/00Y02D30/70
Inventor 杨殷张凯王琤周化雨
Owner SPREADTRUM COMM (SHANGHAI) CO LTD