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Transmitting power installing method, mobile communication system and base station

A technology of mobile communication system and transmit power, applied in the fields of transmit power setting, mobile communication system and base station, and can solve different problems

Inactive Publication Date: 2009-03-18
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the power may be different for different antennas depending on the weighting

Method used

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  • Transmitting power installing method, mobile communication system and base station
  • Transmitting power installing method, mobile communication system and base station
  • Transmitting power installing method, mobile communication system and base station

Examples

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Embodiment Construction

[0048] Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. figure 1 An example of a mobile communication system related to the embodiment of the present invention is shown. figure 1 The illustrated mobile communication system 100 includes a mobile station 110 such as a cellular phone terminal, a base station 120, a radio network control unit (RNC) 130 and a mobile communication network 140 that control the entire mobile communication system.

[0049] In the mobile communication system 100, the TDD method is used for the communication between the base station 120 and the mobile station 110, and time slots are asymmetrically assigned to each uplink circuit and bearer carrying traffic from the mobile station 110 to the base station 120 The downlink circuit for traffic from base station 120 to mobile station 110 . In the asymmetric allocation of time slots, the number of time slots consecutively allocated to u...

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Abstract

A mobile communication system which communicates between a base station and a mobile station by a TDD method is provided, the mobile communication system sets a transmitting power of the base station for each downlink slot which is to be subsequently transmitted according to receiving quality of the downlink slot received by the mobile station before next slot is transmitted and according to a receiving power level of an uplink slot received by the base station.

Description

technical field [0001] The present invention relates to a method of setting transmission power of a downlink time slot allocated to a downlink circuit from a base station to a mobile station in a mobile communication system employing a TDD (Time Division Duplex) method , the present invention also includes a base station and a mobile station. Background technique [0002] In an existing mobile communication system employing the TDD method, time slots are alternately allocated to an uplink from a mobile station to a base station and a downlink in the opposite direction. [0003] The base station must set an appropriate transmit power to ensure that the mobile station receives transmissions in time slots allocated to downlink circuits (hereinafter referred to as downlink time slots). [0004] FIG. 6 is used to explain the first existing method of setting the transmission power of a downlink slot. In the first existing method, when the mobile station receives the downlink tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/26H04B7/005H04B7/04H01L21/8242H01L27/108H04B7/06H04B7/26H04J3/00H04L5/16H04Q7/20H04W52/22H04W52/42H04W52/50
CPCH04W52/225H04W52/42H04W52/50H04B7/0615
Inventor 二方敏之石黑隆之文盛郁山田麻由
Owner NTT DOCOMO INC