A method for controlling initial access power of cellular users

Abstract

The invention provides a method for controlling the initial access power of a cellular user, which belongs to the communication field. The method includes: the base station judges the location distribution of each user in the cell and the channel fading information according to the shared location information and channel fading information of users in the adjacent multi-cell; the base station judges the location distribution of users in the cell and their channel fading The fading situation determines the initial access power compensation strategy of different types of users in the cell; the base station broadcasts the determined initial access power compensation strategy to the users in the cell; each user in the cell according to its own location distribution and channel fading Select the initial access power compensation policy broadcast by the base station and initiate random access. By adopting the present invention, the user access efficiency can 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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