Hybrid multiple access resource management method in heterogeneous network

Abstract

The invention discloses a hybrid multiple access resource management method in a heterogeneous network, and mainly solves the problems of low spectrum resource utilization rate, low number of network access users and severe network power consumption in the prior art. The implementation scheme comprises the steps that 1. the edge weight is calculated based on a constructed interference figure; 2. the attributes {alpha, beta, theta} of all the vertexes of the interference figure are calculated; 3. the first attribute factors alpha of all the vertexes of the interference figure are compared, and the second attribute factors beta of all the vertexes in a vertex set of the maximum alpha are calculated; 4. the most expected resource theta, i.e. the third attribute factors of the vertexes, of the vertexes are allocated to the vertexes of the maximum beta, and the vertexes of the maximum beta are removed from the interference figure; 5. the steps 3-4 are repeated until the vertex set of the interference figure is empty so that resource allocation is completed; and 6. transmitting power of cellular users and D2D users is iteratively optimized so that power allocation is completed. Compared with the conventional resource management method, the hybrid multiple access resource management method in the heterogeneous network has the advantages of being large in system user capacity, high in spectrum efficiency and low in system power consumption and can be used for the cellular and D2D heterogeneous network.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a hybrid multiple access resource management method, which can be used in heterogeneous networks. Background technique [0002] With the rapid increase of mobile and wearable devices, users' demand for wireless communication resources is also increasing rapidly, especially in the upcoming 5G network with higher user density and faster transmission rate, the traditional cellular network can no longer meet Various speed requirements of users. Therefore, the wireless communication technology needs to be further developed to improve the system performance of the entire network, and the introduction of end-to-end D2D communication technology in the cellular network has become an emerging development trend. D2D communication means that geographically adjacent users can communicate directly without passing through the base station, which has the advantages of improving s...

AI Technical Summary

Problems solved by technology

[0005] (1) Traditional heterogeneous network resource management methods are all designed under the single multiple access mechanism. These methods are not suitable for hybrid multiple access heterogeneous networks, and cannot effectively manage hybrid multiple access heterogeneous networks. system resources, resulting in high system energy consumption

[0006] (2) The traditional single multiple access heterogeneous network mainly uses OFDMA as the multiple access technology, but it cannot well adapt to the upcoming high user density, high The 5G network with transmission rate cannot make full use of limited spectrum resources; recently, sparse code division multiple access mechanism SCMA was proposed as a new multiple access technology, but SCMA cannot support D2D users well, Joint decoding of SCMA is too complex for energy- and performance-constrained D2D devices

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