Distance tree protocol frame of medium access control (MAC) layer based on opportunistic spectrum access (OSA) technology

Abstract

The invention discloses a distance tree protocol frame of MAC layer based on an OSA technology, and relates to a protocol frame of MAC layer based on an OSA technology in a wireless communication network. The protocol frame mainly comprises the following two parts: 1. building a distance tree model used for identifying the availability of a primary user channel, and establishing a channel availability list in a base station of a primary and secondary user; 2. building a utility function from the view of fairness and designing the spectrum access strategy. The basic idea of the frame is to build the channel availability list between the primary user and the secondary user respectively according to distance and maximum allowable interference power, which is taken as the reference of channelperceiving and access, and as the reference for realizing resource sharing of fair spectrum between the secondary users. The basic application environment of the protocol frame is a self-organizing network environment in which the multi-primary users and multi-secondary users exist at the same time.

Description

technical field [0001] The present invention generally relates to a protocol framework of a MAC layer based on Opportunistic Spectrum Access (OSA) in a wireless communication network. The basic idea of ​​this framework is to establish a channel availability list based on distance and maximum permissible interference power in the primary user and secondary user respectively, as a reference for channel perception and access, and as a basis for realizing fair spectrum among secondary users. Basis for resource sharing. The basic application environment of the protocol framework is an ad hoc network environment where multiple master users and multiple users exist simultaneously. Background technique [0002] Opportunistic Spectrum Access (OSA) means that there is no need for cooperation between the primary and secondary users, and the secondary users use the spectrum resources of the primary user as they see fit. The primary user does not need to know the existence of the secon...

AI Technical Summary

Problems solved by technology

At the same time, in the self-organizing network environment, in addition to the problem that the secondary users may cause interference to the primary user, the non-cooperative manner between the secondary users will also cause collisions due to the simultaneous sharing of the same primary user channel.

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