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Method and apparatus for adaptive open-loop power control in mobile communication system using tdd

A technology of a mobile communication system and controller, which is applied in the communication, power management, wireless communication and other directions between multiple stations

Active Publication Date: 2007-01-17
NOKIA TECHNOLOGLES OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Power control as mentioned above is problematic even in systems using OFDM / OFDMA schemes

Method used

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  • Method and apparatus for adaptive open-loop power control in mobile communication system using tdd
  • Method and apparatus for adaptive open-loop power control in mobile communication system using tdd
  • Method and apparatus for adaptive open-loop power control in mobile communication system using tdd

Examples

Experimental program
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Effect test

no. 1 example

[0126] Figure 7 is a block diagram of a base station transmission / reception apparatus for performing adaptive open loop power control according to the first embodiment of the present invention.

[0127] refer to Figure 7 , the signal transmitted from / received in the base station is time division duplexed by the TDD duplexer 721 . Also, the base station apparatus includes: a transmitter for performing transmission processing on data to be transmitted from the upper layer processor 701 to the TDD duplexer 721; Received data executes receive processing.

[0128] First, predetermined transmission data generated by the upper layer processor 701 is encoded by the FEC encoder 703 , interleaved by the interleaver 705 , and modulated by the modulator 707 . The signal modulated by the modulator 707 is subjected to radio signal processing by the transmit radio frequency processor 709 and then transmitted in the TDD duplexer 721 through the downlink frame transmission interval.

[0...

no. 2 example

[0139] Figure 9 is a block diagram showing a base station transmission / reception apparatus for performing adaptive open loop power control according to a second embodiment of the present invention.

[0140] refer to Figure 9 , the signal transmitted from / received in the base station is time division duplexed by the TDD duplexer 913 . Also, the base station apparatus includes: a transmitter for processing data to be transmitted from the upper layer processor 901 to the TDD duplexer 913; a receiver for performing reception on data received from the TDD duplexer 913 to the upper layer processor 901 deal with.

[0141] First, predetermined transmission data generated by the upper layer processor 901 is encoded by the FEC encoder 903 , interleaved by the interleaver 905 , and modulated by the modulator 907 . The signal modulated by the modulator 907 is multiplexed by the multiplexer 909 , subjected to radio signal processing by the transmit radio frequency processor 911 , and ...

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Abstract

The invention discloses a device for determining the transmission power of an uplink frame sent from a user station to a base station and sending data in a mobile communication system. In the mobile communication system, the transmission power of an uplink frame sent from a base station to a user station is Downlink frames as well as the uplink frames are time division duplexed (TDD). The device includes: a received power measurement unit for measuring the received power of a signal received from a base station; a transmit power controller for measuring the received power measured by the received power measurement unit and the uplink signal received from the base station. information associated with the reception of the frame determines the transmit power of the uplink frame; and, a transmit radio frequency processor for performing radio processing to transmit the uplink according to the transmit power determined by the transmit power controller frame.

Description

technical field [0001] The present invention relates to a power control method of a mobile communication system, and more particularly, to an apparatus and method for controlling power through an open-loop scheme in a mobile communication system using a Time Division Duplex (TDD) scheme. Background technique [0002] Beginning in the late 1970s, when cellular wireless mobile communication systems were developed in the United States, voice communication services have been provided to users through the Advanced Mobile Phone Service (AMPS) system, known as The first generation (1G) analog mobile communication system. Then, in the mid-1990s, a Code Division Multiple Access (CDMA) system has been commercialized and is generally called a second generation (2G) mobile communication system, and thus voice services and low-speed data services have been provided. [0003] In addition, International Mobile Telecommunications-2000 (IMT-2000)—which is commonly referred to as a third-gen...

Claims

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Application Information

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IPC IPC(8): H04B7/26
CPCH04W52/54H04W52/16H04W52/24H04W52/242H04W52/08H04W28/04H04W52/247H04W52/48H04L1/1829H04W52/10H04W52/286H04W52/241H04W52/146H04W88/08F16L19/07F16L25/0054
Inventor 赵在源张真元初世俊尹淳暎许壎
Owner NOKIA TECHNOLOGLES OY
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