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Radio communication system, radio network controller, mobile station and down link transmission power control method

A technology for transmitting energy and downlink, which is applied in the field of mobile station and downlink transmission energy control and radio station, and can solve the problems of increased control information and increased communication volume of uplink wireless resources.

Inactive Publication Date: 2004-08-18
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the control information that does not contribute to the predetermined downlink transmission energy control increases, and the traffic of uplink radio resources increases.

Method used

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  • Radio communication system, radio network controller, mobile station and down link transmission power control method
  • Radio communication system, radio network controller, mobile station and down link transmission power control method
  • Radio communication system, radio network controller, mobile station and down link transmission power control method

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Embodiment Construction

[0027]

[0028] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 3 is a schematic diagram of the overall structure of the wireless communication system according to the first embodiment of the present invention. As shown in FIG. 3, the wireless communication system of this embodiment includes: a wireless network controller 20, multiple base stations (30a-30d) and multiple mobile stations (40a-40j).

[0029] The radio network controller 20 transmits the same information to multiple mobile stations (40a-40j) via multiple base stations (30a-30d) (for example: broadcast communication or multicast communication). In this embodiment, the radio network controller 20 and the base stations 30a-30d are specific embodiments of radio stations.

[0030] Base stations (30a-30d) have the same functionality. Mobile stations (40a-40j) have the same functionality. In the detailed description, the base station 30a and t...

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Abstract

A mobile communication system, a wireless station proper for being used thereto, a mobile station and a forward transmit power controlling method are provided to reduce control information transmitted to a wireless station from a mobile station, and to decrease traffic of reverse wireless resources, thereby suppressing an amount of interference in an overall mobile communication system. The same information is transmitted to plural mobile stations(40a-40c) from a base station(30a) by a predetermined forward transmit power. The base station(30a) comprises a transmit power controller for controlling the predetermined forward transmit power, according to the control information transmitted by a portion of the plural mobile stations(40a-40c) located in a service area of the corresponding base station(30a).

Description

technical field [0001] The present invention relates to a radio communication system in which the same information is transmitted from a radio station to a plurality of mobile stations, the invention also relates to a radio station, a mobile station and a downlink for the radio communication system Transmission energy control method. Background technique [0002] Generally, techniques for simultaneously transmitting the same information from a radio station (such as a base station and a radio station) to multiple mobile stations include broadcast communication and multicast communication. [0003] Such as figure 1 As shown, broadcast communication is a technology that transmits the same information from one or more base stations (11-17) to all mobile stations (101-112) around them at the same time (for example, refer to the technical implementation of 23.041 Cellular Broadcast Service (CBS) , which is composed of the Third Generation Cooperation Program Technical Specifica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/69H04B1/7103H04B7/005H04B7/26H04J13/00H04W4/06H04W52/04H04W52/08
CPCH04W52/322H04W52/327H04W52/143H04B7/005
Inventor 文盛郁中村武宏花木明人石井美波
Owner NTT DOCOMO INC
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