A Resource Management Method for Hybrid Multiple Access in Heterogeneous Networks

Abstract

The invention discloses a resource management method for mixed multiple access in a heterogeneous network, which mainly solves the problems in the prior art that the spectrum resource utilization rate is not high, the number of network access users is small, and the network power consumption is serious. The implementation plan is: 1. The base station constructs the interference graph and calculates edge weights; 2. Calculates the attributes {α, β, θ} of all vertices in the interference graph; 3. Compares the first attribute factor α of all vertices in the interference graph, and compares α The second attribute factor β of all vertices in the largest vertex set; 4. Assign the most expected resource θ to the vertex with the largest β, which is the third attribute factor of the vertex, and remove the largest β from the interference graph 5. Repeat 3-4 until the interference graph vertex set is empty, and complete resource allocation; 6. Iteratively optimize the transmit power of cellular users and D2D users, and complete power allocation. Compared with the traditional resource management method, the present invention has the advantages of large system user capacity, high spectral efficiency, low system power consumption, etc., and can be used in cellular and D2D heterogeneous networks.

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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