Smart city high-speed data transmission method based on C-RAN

Abstract

The invention belongs to the technical field of user access based on C-RAN network architecture, and provides a smart city high-speed data transmission method based on C-RAN. The method comprises thesteps of respectively modeling position distribution models of a macro base station and RRH by using a Poisson point process and a Matrix Itype hardcore point process; designing a new access algorithm, enabling the macro base station to be mainly responsible for coverage, moving the radio frequency processing unit function of the RRH upwards to an edge computing server, and enabling a plurality ofRRHs to cooperatively serve the same user, so as to reduce interference and improve the transmission rate; deriving an SIR distribution model and an interference distribution model of the user by utilizing a moment generation function of the hardcore point process based on the proposed system model; and deducing the average reachable rate and the regional spectrum effectiveness of the users served by the cooperative RRHs in the network by using the model and the distance distribution model; and obtaining the theoretical relationship between the network performance index and the network deployment parameter. According to the invention, a numerical simulation result shows that the proposed model can model network distribution, and the proposed algorithm can bring about obvious performance improvement.

Description

technical field [0001] The invention belongs to a high-speed data transmission method under the C-RAN network architecture applicable to smart cities, and in particular relates to an access method for RRH collaborative service users based on mobile edge computing and SDN. Background technique [0002] At present, the existing technology commonly used in the industry is that users are served by a single base station, and are responsible for its control information transmission and data information transmission at the same time. The network structure of C-RAN simplifies the function of RRH and moves its control function up to the mobile edge computing server. The advantage brought by this is that the resource allocation of RRH can be uniformly deployed by the server. In traditional mobile wireless networks, users are served by a single base station that meets the requirements. However, with the dense deployment of RRHs, this will lead to a certain degree of waste of resources,...

AI Technical Summary

Problems solved by technology

[0006] (1) In the C-RAN network, in order to increase the network capacity, RRHs are densely deployed, resulting in shortened distance between RRHs and more serious interference

Existing data transmission methods cannot maximize the utilization of resources, which not only causes waste of resources, but also reduces user experience, which is not conducive to high-capacity services in smart cities

[0007] (2) RRHs are deployed more densely in hotspot areas. This feature will not bring benefits to the existing data transmission methods, but will seriously interfere with the communication between the serving RRH and users.

However, the existing user access methods do not effectively consider this point and lack reliable theoretical analysis

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