A method and device for distributing uplink power in Internet of Vehicles
A distribution method and technology of the Internet of Vehicles, applied in power management, vehicle components, transportation and packaging, etc., can solve problems such as vehicle communication interruption and system capacity reduction, to ensure reliability, reduce inter-cell co-channel interference, and optimize uplink. The effect of transmit power
Active Publication Date: 2020-03-17
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a method and device for distributing uplink power in the Internet of Vehicles, so as to solve the problems existing in the prior art that the same frequency interference between adjacent cells leads to the interruption of vehicle communication and the reduction of system capacity
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Embodiment 1
[0048] like figure 1 As shown, the uplink power allocation method of the Internet of Vehicles provided by the embodiment of the present invention includes:
[0049] S101, the base station is placed on the roadside, and in a multi-cell scenario, when all cells are deployed in full frequency bands, the same-frequency interference between cells mainly comes from the left and right adjacent cells;
[0050] S102, according to the distribution characteristics of the roadside base stations and inter-cell interference, when the vehicle user is performing uplink transmission with the base station, determine the interruption probability of the uplink transmission of the vehicle user in the cell and the average value of the total system capacity through the channel state distribution;
[0051] S103, with the goal of maximizing the mean value of the total system capacity and the outage probability as constraints, an optimization model is established, and an optimization algorithm is used ...
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The invention provides a vehicle networking uplink power distribution method and device, which can reduce inter-cell co-frequency interference of multi-cell vehicle networking, ensure the reliabilityof communication, and enhance the total capacity of the system. The method comprises the following steps: a base station is placed on a road side; under a multi-cell scenario, when all cells are deployed in a full-frequency band, inter-cell co-frequency interference mainly comes from two neighboring cells on the left and right; According to the distribution characteristics of roadside base stations and their inter-cell interference, when the vehicle users transmit uplink with the base stations, the outage probability of the uplink transmission of the vehicle users in the cell and the average value of the total system capacity are determined by the channel state distribution; in order to maximize the total capacity of the system as the objective, the outage probability as a constraint, theoptimization model is established, and the optimal uplink transmission power allocation strategy is determined by the optimization algorithm. The invention is suitable for power distribution operation.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for distributing uplink power of the Internet of Vehicles. Background technique [0002] With the continuous development of the society, the number of vehicles is increasing rapidly, and the road traffic is becoming increasingly busy. Through the research of key basic theoretical models, the Internet of Vehicles effectively applies information technology and communication technology to the transportation system to realize centralized dispatching of information and Intercommunication of vehicle information to establish real-time, accurate and efficient vehicle communication. [0003] Roadside base stations usually adopt the strategy of co-frequency deployment. Due to the concentrated distribution of road vehicles, co-frequency interference between adjacent cells will affect the quality of vehicle communication, resulting in interruption o...
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IPC IPC(8): H04W4/44H04W52/14H04W52/24H04W52/26
CPCH04W4/44H04W52/146H04W52/241H04W52/243H04W52/267Y02T10/40
Inventor 陈月云曾卓杜利平
Owner UNIV OF SCI & TECH BEIJING