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Method and device for channel quality indication calibrating and base station dispatching users data

A technology for channel quality indication and user scheduling, which is used in digital transmission systems, communication between multiple stations, and transmission control/equalization to achieve the effects of suppressing excessive variance, avoiding influence, and smoothing processing.

Active Publication Date: 2008-10-15
XFUSION DIGITAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0010] The technical problem solved by the present invention is to provide a method and device for channel quality indicator calibration and base station scheduling user data, in order to ensure that the base station schedules users. When using data, make full use of the gains brought by HSDPA's AMC and HARQ technologies to maximize the power efficiency of data transmission

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  • Method and device for channel quality indication calibrating and base station dispatching users data
  • Method and device for channel quality indication calibrating and base station dispatching users data
  • Method and device for channel quality indication calibrating and base station dispatching users data

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Embodiment Construction

[0067] The core of the present invention is that when the base station HSDPA schedules user data, it first calibrates the CQI fed back by the UE; then determines the transmission format of the scheduled user data corresponding to the calibrated CQI; and finally schedules the transmission of user data according to the determined transmission format. By performing adaptive calibration on the CQI fed back by the UE, it can ensure that the IBLER, SBLER or RBLER of the UE data transmission reaches the set target value, so as to make full use of the gains brought by the AMC and HARQ technologies of HSDPA, which will be described in detail below.

[0068] refer to figure 2 , which is a schematic diagram of CQI measurement feedback and HS-DSCH channel transmission in the prior art. Such as figure 2 As shown, there is a time slot difference between the UE measuring CQI time and the feedback time. Since the uplink HS-DPCCH channel is demodulated, and the HS-SCCH channel is sent two t...

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Abstract

This invention discloses a method and a device for calibrating channel quality instructions and dispacthing user data, the principle is that when a base station down high speed packet accesses the dispatched user data, it calibrates the channel quality instruction fed back by the user device then determines the transmission format of the data corresponding to the calibrated channel quality instruction and finally dispatches the user data to transmit them based on said determined transmission format, which carries out adaptive calibration to the channel quality instructions fed back by a user device to guarantee that the initial transmission BER, the statistic BER or residual BER will get the designed target value so as to fully utilize the gain brought with the adaptive modulation code and mixed automatic re-transmission requirement technology accessed by the down high speed packet.

Description

technical field [0001] The present invention relates to the technical field of High Speed ​​Downlink Packet Access (HSDPA), more specifically, the present invention relates to a method and device for HSDPA channel quality indication calibration and base station scheduling user data. Background technique [0002] HSDPA is a key technology for wideband code division multiple access system to improve downlink peak transmission rate and system spectrum efficiency. HSDPA adopts adaptive modulation and coding (Adaptive Modulate and Coding, AMC) and hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) technology: AMC technology mainly uses the channel quality indicator ( Channel Quality Indicator (CQI) information selects an appropriate transmission block length, and the HARQ technology improves data transmission efficiency through retransmission combining at the physical layer. [0003] The measurement process of the CQI fed back by the UE is: the system notifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04B7/005H04B7/26
Inventor 吴凤娟蔡华汪少波李必涛
Owner XFUSION DIGITAL TECH CO LTD
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