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A permutation group-based channel pooling method for multi-antenna cognitive wireless networks

A technology of cognitive wireless network and permutation group, which is applied in the field of multi-antenna cognitive wireless network channel convergence based on permutation group, can solve the problem of long convergence time, and achieve the effect of shortening the time.

Active Publication Date: 2019-01-04
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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Problems solved by technology

[0006] Aiming at the problem that the commonly used single-antenna channel fusion method takes a long time to achieve convergence, the present invention proposes a permutation group-based multi-antenna cognitive wireless network channel convergence method, which can speed up the convergence only by appropriately increasing the number of antennas, that is, only Neighboring users can be quickly discovered by adding a small amount of hardware overhead

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  • A permutation group-based channel pooling method for multi-antenna cognitive wireless networks
  • A permutation group-based channel pooling method for multi-antenna cognitive wireless networks
  • A permutation group-based channel pooling method for multi-antenna cognitive wireless networks

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] The cognitive wireless network environment considered in the present invention includes K (K≥2) users. Assuming the network is slotted, all slots are of the same fixed length. The licensed frequency band in the cognitive wireless network is divided into M (M≥1) non-orthogonal channels, that is, C={c 1 ,c 2 ,... c M}. It is assumed that all users in the network know the label of the channel. If the secondary user can communicate on a channel without any interference to the activities of the primary user, the channel is considered available for the secondary user. Whether the channel is available can be known through the relatively mature spectrum detection technology at present. Without loss of generality, the present invention considers the channel pooling problem between a pair of users i and j (i≠j and i,j=1,2,...,K). Assuming ...

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Abstract

The invention relates to wireless network technology, and is a permutation group-based multi-antenna cognitive wireless network channel merging method, which enables cognitive users equipped with multiple antennas to realize channel blind merging without clock synchronization. The present invention makes full use of the characteristics of channel diversity, permutation group closure, multi-antenna concurrency, etc. when designing the frequency hopping sequence, and uses the permutation groups obtained by rotating the regular polyhedron or regular polygon at different angles according to different types of symmetry axes as the basis to perform a cycle Splicing, and different antennas can independently generate frequency hopping sequences and switch channels according to different rules. The sequence generation methods are diverse and flexible. Through parallel search, it can be guaranteed to achieve determinism with other cognitive users as fast as possible within a limited time. Convergence is an efficient blind channel converging method that has wide applicability and can be applied to large-scale wireless networks.

Description

technical field [0001] The present invention relates to wireless network technology, in particular to a multi-antenna cognitive wireless network channel convergence method based on permutation groups. Background technique [0002] Cognitive wireless technology is currently a promising technology to solve the problem of low spectrum utilization caused by static spectrum allocation. The use of dynamic spectrum access can effectively improve the utilization of licensed frequency bands. Since the primary user in the cognitive network has a higher priority on spectrum use than the secondary user, the secondary user needs to detect the signal of the primary user before using the frequency band. coexistence to avoid interference with the primary user's communications. [0003] The basis of cognitive wireless network networking protocol design is that the sender can find the receiver and use the same channel for communication. Aiming at this problem, the channel convergence mechan...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/02
CPCH04W16/02H04B1/7143H04W72/27H04B1/405H04B1/713H04B2001/1045H04W72/12
Inventor 梁炜于海斌杨博张晓玲
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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