Self-adaptation optimization method and system of cognitive two-way relay network

A technology of two-way relay and optimization method, which is used in network planning, electrical components, wireless communication, etc., to reduce the probability of interruption and ensure reliability.

Inactive Publication Date: 2014-05-28
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still few methods for optimizing the performance of cognitive two-way relay network, which is a problem that needs to be solved

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  • Self-adaptation optimization method and system of cognitive two-way relay network
  • Self-adaptation optimization method and system of cognitive two-way relay network
  • Self-adaptation optimization method and system of cognitive two-way relay network

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Embodiment Construction

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0029] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refe...

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Abstract

The invention discloses a self-adaptation optimization method of a cognitive two-way relay network. The method includes the steps of setting interference temperature of a primary user node and an outage probability threshold value of a secondary user node; estimating and obtaining channel state information of each node in the cognitive two-way relay network; calculating the outage probability of the cognitive two-way relay network by means of a preset outage probability quick assessment method; comparing the outage probability and the outage probability threshold value; if the outage probability is smaller than the outage probability threshold value, transmitting data through the cognitive two-way relay network, and otherwise, adjusting the transmission rate of the cognitive two-way relay network so as to lower the outage probability of the cognitive two-way relay network. By means of the self-adaptation optimization method of the cognitive two-way relay network, data transmission reliability of the cognitive two-way relay network can be effectively guaranteed. The invention further discloses a self-adaptation optimization system of the cognitive two-way relay network.

Description

technical field [0001] The invention relates to the technical field of design communication, in particular to an adaptive optimization method and system for a cognitive two-way relay network. Background technique [0002] Cognitive radio is one of the key technologies for future wireless networks. Through spectrum sharing, cognitive radio can greatly improve spectrum efficiency, which is an effective measure to alleviate the shortage of spectrum resources. A coexistence spectrum sharing system, under the premise of ensuring the quality of service (QoS) of the primary user, no matter whether the spectrum is Occupied by the primary user, the secondary users can access the authorized network. However, since the transmission power of the secondary user is strictly limited, it is difficult to guarantee the transmission quality of the secondary user. How to improve the performance of sub-users has become a research hotspot. [0003] Relay technology can effectively expand signa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W24/02
Inventor 王京洪浩张秀军肖立民粟欣田志刚
Owner TSINGHUA UNIV
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