Radio channel setting method, radio network controlling device and base station, and mobile communication system

Abstract

A radio channel setting control method for communications between a base-station apparatus (111) and a mobile-station apparatus (112) in a mobile communications system employing a CDMA scheme comprising the steps of: a) determining whether or not a spread code used for the communications can be allocated; b) determining whether or not a predetermined hardware device can be allocated; c) determining whether or not a radio resource can be allocated; d) setting the radio channel between the base-station apparatus and mobile-station apparatus when it is determined that the spread code, predetermined hardware device and radio resource can be allocated.

Description

technical field [0001] The present invention relates to an improved radio channel setting control technique, in particular to a radio channel setting control technique for controlling the setting of a radio channel used for communication between a base station device and a mobile station device in a CDMA mobile communication system. Background technique [0002] In a mobile communication system such as a currently popular mobile phone system, the entire service area is divided into a plurality of relatively small radio areas called "cells". This mobile communication system includes a plurality of base station devices (each covering a divided radio area), a mobile station device (communicating with the base station by setting a radio channel), and a radio network control device. Although the radio network control device can control a plurality of base station devices, after all, there are usually many base station devices in the mobile communication system, so there are also ...

AI Technical Summary

Problems solved by technology

[0017] For example, assuming that the interference power to the own cell becomes larger due to the increase of the traffic volume of the adjacent cell, then, even if there are few communicating users in the own cell and the spreading code and hardware equipment are sufficient, the radio resource Insufficient and unable to set a new radio channel

[0018] On the other hand, when the interference caused by the traffic volume of neighboring cells is small but the traffic volume of the own cell is increased, even if the remaining radio resources are sufficient, it may fail due to the insufficient margin of spreading codes and hardware equipment. When setting a new radio channel

[0019] Also, assuming that the system designer underestimates the traffic volume of his own cell, even if the diffusion code and radio resources are very sufficient, it will not be possible to set a new network due to the insufficient number of hardware devices actually installed in the base station device. Condition of the radio channel

[0020] It can be seen that, as in the prior art, it is impossible to maintain high-quality communication by only considering specific factors to determine whether it is possible to set the radio channel.

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