Cellular network traffic transfer method based on multi-hop d2d communication

Abstract

The invention discloses a cellular network traffic transfer method based on multi-hop D2D communication. The method comprises the following steps: (10) establishment of a residual resource list; (20) search of a network with maximum residual resources; and (30) relay access, wherein the establishment of the residual resource list includes the step that a cellular network base station requests all micro cellular networks to upload residual resources and establishes the the residual resource list; the search of the network with the maximum residual resources includes the step that the cellular network base station searches the micro cellular network with the maximum residual resources according to the residual resource list; and the relay access includes the following steps: selecting a relay link with the best link quality to perform relay access according to the quality of the relay links of a connection request node and a free node in the micro cellular network with the maximum residual resources. According to the cellular network traffic transfer method based on multi-hop D2D communication disclosed by the invention, a cellular heterogeneous network at which users are centrally distributed can maintain load balancing.

Description

technical field [0001] The invention belongs to the technical field of cellular heterogeneous network data transmission, in particular to a cellular network traffic transfer method based on multi-hop D2D communication that balances the load of a cellular heterogeneous network with centralized distribution of users. Background technique [0002] Mobile traffic transfer refers to the use of various wireless communication technologies to transmit traffic data that should be transmitted by the cellular network, so as to reduce the load of the cellular network and improve the key performance of the network. In cellular ad hoc heterogeneous networks, operators often deploy a variety of microcellular networks with small network coverage (such as Pico cells and Femo cells, etc.) in traditional cellular networks (Macro cells) to improve regional Spectrum utilization efficiency, relieve traffic pressure in hotspot areas and improve end-user experience. However, due to the random dist...

AI Technical Summary

Problems solved by technology

For such a scenario, if the users concentrated in the hotspot area only use the traffic forwarding technology based on single-hop D2D communication, not only will there be a lot of access competition among users, but many users will not be able to relay to the hotspot area idle microcellular network

[0005] Therefore, the problem existing in the prior art is: for a heterogeneous cellular network scenario where there are centralized distribution of users (hotspot areas) in the network, traffic transfer based on single-hop D2D communication will lead to great access competition among users, and the network load unbalanced

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