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Method for determining inverse data modulation coding mode and access terminal thereof

A modulation and coding method and a technology for accessing terminals. It is applied in the direction of adjusting channel coding, multi-frequency code system, and adjusting transmission rate. It can solve problems such as scheduling errors, reduce excessive occupancy, improve transmission throughput, and avoid scheduling errors. Effect

Inactive Publication Date: 2010-05-12
深圳敦骏科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a method for determining the reverse data modulation and encoding method to solve the scheduling error caused by AN scheduling AT in the prior art, and avoid affecting the throughput of reverse channel data transmission

Method used

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  • Method for determining inverse data modulation coding mode and access terminal thereof
  • Method for determining inverse data modulation coding mode and access terminal thereof
  • Method for determining inverse data modulation coding mode and access terminal thereof

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Embodiment Construction

[0074] In the actual mobile communication system, when the AN performs reverse power control on the AT, it always uses a reference channel as a reference. For example, in the DO Rev.A mobile communication system, the reverse power control reference channel is the reverse pilot channel. In the 802.02 mobile communication system, the reverse power control reference channel is a reverse channel quality indicator (CQI, Channel Quality Indicator) channel. During the reverse power control process of the AT by the AN, the AN continuously measures the channel quality of the reverse power control reference channel, and calculates the signal-to-noise ratio (SNR, Signal to Noise Ratio), if the calculated SNR is greater than the preset target SNR, then AN sends a power control command to AT, instructing AT to reduce the transmission power of the reference channel; otherwise, AN sends a power control command to AT, instructing AT to increase the reference channel The transmit power of the ...

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Abstract

The disclosed determining method for inverse data modulating way comprises: in a wireless access network, the access terminal determines self quality of inverse data channel according to the quality of inverse power-control reference channel, and determines the modulating and coding way for inverse data transmission. This invention can avoid scheduling error during the AN schedules AT, and reducesthe effect on throughout of inverse data transmission.

Description

technical field [0001] The present invention relates to a terminal scheduling technology in an Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) system, in particular to a method for determining a reverse data modulation and encoding method and an access terminal thereof. Background technique [0002] Future mobile communication systems mainly adopt Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) multiple access methods, such as the Long Term Evolution (LTE, Long Term Evolution) system and Air Interface Evolution (AIE, Air Interface Evolution) proposed by 3GPP. ) systems and the like are evolving toward a direction based on OFDM multiple access methods (such as OFDMA). In the OFDM system, the transmitter maps the data symbols to different mutually orthogonal narrowband subcarriers after being processed by Inverse Discrete Fourier Transformation (IDFT, Inverse Discrete FourierTransformat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L25/03
CPCH04L1/0003H04L1/0009H04L1/0034
Inventor 刘珏君
Owner 深圳敦骏科技有限公司