Internet of vehicles power control method and system oriented to imperfect channel state information

Abstract

The invention belongs to the technical field of communication, particularly relates to the technical field of Internet of Vehicles system communication, and discloses an Internet of Vehicles power control method and system oriented to imperfect channel state information. The vehicle networking power control method for imperfect channel state information comprises the following steps: a base station acquires channel state information of a vehicle-vehicle link and channel state information of a vehicle-base station link in a coverage range; the vehicle-to-vehicle communication link and the vehicle-to-base station link are paired in a one-to-one manner to use the same spectrum resource; reliability constraints in a probability form are constructed for the vehicle-vehicle link; according to the distribution of the channel uncertainty information, converting the reliability constraint in the probability form into a solvable fractional form constraint; the constraint conditions of the vehicle-vehicle link and the vehicle-base station link are combined, and after the feasible condition of the power control problem is obtained, the optimal transmitting power of the vehicle-vehicle link and the optimal transmitting power of the vehicle-base station link are solved. According to the invention, the reliability of the communication link in the Internet of Vehicles system can be obviously improved.

Description

technical field [0001] The invention belongs to the technical field of communication, specifically relates to the technical field of communication of an Internet of Vehicles system, and in particular relates to a power control method and system of an Internet of Vehicles oriented to imperfect channel state information. Background technique [0002] Currently, the IoV communication system includes a vehicle-to-base station link and a vehicle-to-vehicle link. The vehicle nodes in the Internet of Vehicles communication system have high mobility, so the wireless channel status in the Internet of Vehicles changes rapidly. Since the channel state information of the vehicle-base station link can be directly fed back to the base station, the system can accurately obtain its channel state information. However, the vehicle-to-vehicle link channel state information needs to go through multiple hops to be fed back to the base station, so the feedback of the vehicle-to-vehicle channel s...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems existing in the prior art, the present invention provides a power control method and system for the Internet of Vehicles oriented to imperfect channel state information, aiming at solving the power control problem of meeting the high-reliability communication requirements of the Internet of Vehicles under the high-speed motion Internet of Vehicles environment

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