Cellular user initial access power control method

Abstract

The invention provides a cellular user initial access power control method, and belongs to the field of communication. The method comprises the following steps that: a base station judges the positiondistribution condition and the channel fading condition of each user in a cell according to shared position information and channel fading information of adjacent multi-cell users; the base station determines initial access power compensation strategies of different types of users in the cell according to the position distribution condition and the channel fading condition of the users in the cell; the base station broadcasts the determined initial access power compensation strategy to users in the cell; and each user in the cell selects an initial access power compensation strategy broadcasted by the base station according to the position distribution condition and the channel fading condition of the user and initiates random access. According to the invention, the user access efficiencycan be improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for controlling initial access power of a cellular user. Background technique [0002] In a cellular system, a user equipment (User Equipment, UE) (user equipment for short: user) sends a random access preamble (Preamble) to a base station (Base Station, BS), and receives a preamble response message fed back by the BS to the UE After that, the random access process is completed. Since there is a path loss in the signal transmission between the UE and the BS, the UE needs to use a certain transmit power to send the Preamble to the BS. In order to make the power of the Preamble sent by the UE reaching the BS reach a preset value, the UE needs to compensate the above-mentioned path loss into the transmission power of the Preamble. To this end, the UE may measure the received Reference Signal Received Power (Reference Signal Received Power, RSRP) to calculate the path loss of the...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at adopting the ideal power compensation mode in the existing random access power compensation, without considering the distribution of users in the cell (the difference between the near-end user and the far-end user), which causes the power to be too high or too high when the user initiates random access. In order to solve the problem of low random access failure, a method for controlling the initial access power of cellular users is provided, which can ensure that users perform efficient random access with appropriate power, and improve the user's access success rate and access efficiency

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