Base station and radio resource distribution method

Abstract

To provide a base station capable of efficiently assigning a new wireless resource to establish a wireless channel to a mobile station in a mobile communication system. The base station comprises a number of reach times judging section which judges whether or not the number of times that the average radio resource usage volume for a prescribed time period has reached a change threshold value during a prescribed time period lies outside a reference number of times range; an allocation threshold value increasing and decreasing section which increases the allocation threshold value with respect to the radio resource usage volume at the time of a communications request from a mobile station, if the number of reach times is less than the minimum number of times of the reference number of times range, and reduces the allocation threshold value, if the number of reach times is greater than the maximum number of times of the reference number of times range; a usage volume at time of request judging section for judging whether or not the radio resource usage volume at the time of a communications request is less than an allocation threshold value; and a radio resource allocating section for allocating a new radio resource in order to establish a radio link with a mobile station, if the radio resource usage volume at the time of the communications request is less than the allocation threshold value.

Description

technical field [0001] The present invention relates to a base station and a radio resource allocation method for performing new radio resource allocation in order to establish a radio link with a mobile station in a mobile communication system. Background technique [0002] In a mobile communication system using CDMA (Code Division Multiple Access), when there is a communication request from a mobile station, if the base station can secure wireless channels and hard resources (allocated in each call) for communication with the mobile station The transmission and reception signal processing part of the system), it is judged whether the radio resource usage when there is a communication request is less than the threshold for allocation (preset fixed value), and if the radio resource usage is less than the threshold for allocation , a new radio resource is allocated and a radio link with the mobile station is established. [0003] However, since the base station requires high...

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Problems solved by technology

[0003] However, since the base station requires high transmission power in the process of transmitting data to the mobile station, even if the number of mobile stations establishing communication is fixed, the amount of radio resource usage will fluctuate, and the allocation of radio resources as described above The following problems will arise in the base station

[0004] For example, in actuality, under the condition that the communication with the mobile station is busy, the data communication to a plurality of mobile stations may temporarily decrease and the amount of radio resource usage becomes less than the threshold for allocation. According to the communication requirements of the station, the allocation of wireless resources will be carried out, and the capacity of wireless resources will be suppressed as a result.

[0005] On the other hand, in reality, in a situation where the communication with the mobile station is not very active, there may be times when the data transmission to a plurality of mobile stations temporarily increases and the amount of radio resource usage exceeds the allocation threshold. Communication requests from mobile stations do not allocate radio resources, therefore, radio resources cannot be effectively used

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