Data transmission control method of downgoing high speed shared channel in high speed data insertion system

A technology for high-speed data access and data transmission control, applied in transmission control/equalization, digital transmission system, transmission system, etc. Interference between HIs, saving transmit power, high-performance level effects

Inactive Publication Date: 2003-07-16
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the system allocates resources related to dedicated channels, it does not necessarily consider high-speed data services. Therefore, transmitting HI by punching DPDCH may have a greater impact on DPCH services; secondly, because HI is only equivalent to one modulation symbol , has neither time diversity nor coding gain, and is easily interfered by burst noise, so its bit error performance is difficult to guarantee. In order to ensure its bit error performance, the only way to compensate is to increase the transmit power
When the number of users in a cell is large, mutual interference between HIs and interference to other code channels will occur, which will affect the performance of the downlink

Method used

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  • Data transmission control method of downgoing high speed shared channel in high speed data insertion system
  • Data transmission control method of downgoing high speed shared channel in high speed data insertion system
  • Data transmission control method of downgoing high speed shared channel in high speed data insertion system

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] In the high-speed data access system, the timing relationship reference of HI, HS-SCCH and HS-DSCH figure 2 . For the above three channels, based on the start time of HS-SCCH, the HI is sent at the earliest at the beginning of the first time slot, and at the latest at the beginning of the second time slot. The time offset between HS-DSCH and HS-SCCH is (2+m*0.1) time slots, where m≥0.

[0023] The present invention is based on the timing relationship of the above-mentioned channels, and its essence is to add a check code carrying a UEID identifier in the first part of the control information of the HS-SCCH, so that the UE can pass the The verification of the first part of the control information above can determine whether the UE has data to receive on the HS-DSCH within a certain transmission time interval, and determine the HS-SCCH where the contr...

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Abstract

A data transmission control method of down-high speed shared channel in high-speed data insertion system uses a control information used for HS-DSCH demodulation and calibration information brought with VEID of the control information as a first part control information of HS-SCCH at the base station end and to send it at the first time-slot in TTI of HS-SCCH; at UE end before the third time-slot start of HS-SCCH through calibration of the first part control information; whether there is data to be received by UE or not on HS-DSCH at interval of a certain transmission time should be judged so as to confirm HS-SCCH attached with the control information corresponded to HS-DSCH and furthermore to fulfil data reception of HS-DSCH. It is not necessary to have instructions of HS-DSCH from HI, if the abovesaid method is applied.

Description

technical field [0001] The invention relates to a data transmission control method in a wireless communication system, in particular to a data transmission control method for a downlink high-speed shared channel of a high-speed data access system. Background technique [0002] In the high-speed data access system of Wideband Code Division Multiple Access (WCDMA), downlink channels usually include three types: downlink high-speed shared channel (HS-DSCH), which is used to carry high-speed data services; downlink shared control channel (HS-SCCH) ), used to carry the control information required to receive HS-DSCH, such as code channel information, modulation and coding mode, HARQ information, etc.; Downlink High Speed ​​Shared Indicator Channel (HI), used to indicate that the UE is on the HS-DSCH within a certain transmission time interval Whether there is data to be received on the HS-DSCH, and which HS-SCCH the control information corresponding to the HS-DSCH is carried on. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/06H04B7/005H04B7/26H04L1/00H04W52/02
CPCY02D30/70
Inventor 魏岳军
Owner HUAWEI TECH CO LTD
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