Abstract
Aiming at the research of resource allocation and interference management in multi-layer wireless networks in heterogeneous cognitive networks, this paper mainly discusses the resource allocation and interference management in heterogeneous cognitive networks and proposes our proposed cluster-based cooperative interference management scheme. This scheme minimizes the cross-layer interference of multiple base station cells to primary users and avoids the same-layer interference between base station cells through joint channel allocation and power allocation. Through cognitive perception or joint scheduling, the available channel can be obtained by the home base station cell, and then the channel, power and other resources can be allocated according to the related algorithms proposed by us, so as to ensure the harmonious coexistence of the home base station cell and the authorization system such as macrocell. Finally, we validate the proposed algorithm. The simulation results show that the algorithms are effective in reducing interference, but the degree is different.
Highlights
In recent years, various wireless communications and network technologies have been developing rapidly
In order to provide a higher quality of service and better user experience, future mobile wireless communication network requires a higher data rate [4, 5]
This paper proposes a resource allocation and interference management scheme based on cognitive radio in heterogeneous networks
Summary
Various wireless communications and network technologies have been developing rapidly. The emergence of new high-end handheld devices such as smartphones and tablets irreversibly shifts users’ attention to more data-intensive applications, such as online games, video sessions, online audio, video streaming, etc Research shows that this fast-growing demand for high data rate comes mainly from indoor environment. Increasing the number of base stations to achieve better signal coverage is not feasible, because base station deployment costs a lot In this case, the wireless heterogeneous network composed of the home base cell and the macrocell arises at the historic moment. Home base station cellular network is a low-cost, plug-and-play network system, mainly used to extend radio coverage to indoor environment, so it can support rapidly increasing data rate requirements. Timing, synchronization, and support for quality of service (QoS) guarantee and portable management of home base stations are urgent problems to be solved
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