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Method and apparatus for data transmission in a mobile telecommunication system

A telecommunications system and data technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as deterioration of transmission quality, deterioration of voice call quality, and low transmission power

Active Publication Date: 2006-01-04
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0026] However, at the receive level, the quality of all E-DPDCH, DPDCH, and DPCCH is degraded in time slot T3 because these physical channels use lower transmit power than in time slot T2
Specifically, if the transmit power of all physical channels is always scaled proportionally in the case where DCH and E-DCH have different priorities from each other, the transmission quality of DCH or E-DCH may deteriorate due to retransmission
For example, even if DCH is used for a voice call with higher priority, DCH data may be transmitted at very low power in some time slots of a TTI due to the retransmission of E-DCH data with lower priority. level emission, which can degrade the quality of voice calls

Method used

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Embodiment Construction

[0049] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Also, in the following description, a detailed description of known functions and configurations included in the present invention will be omitted for conciseness.

[0050] The present invention to be described below ensures that all but The transmission quality of physical channels other than E-DPDCH, where the Enhanced Uplink Dedicated Channel (E-DCH) is mapped onto E-DPDCH.

[0051] Image 6 An example of changing UE transmit power according to an embodiment of the present invention is shown.

[0052] refer to Image 6 , the UE initially transmits E-DCH data through the E-DPDCH in time slot T1. Since there is no DCH data in time slot T1, the total transmit power 501 does not exceed the maximum allowed power (Pmax) 507. However, retransmission of E-DCH data occurs in time slot T2, and DCH data is transmitted through DPDCH, so the total transmission power 502 exceed...

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Abstract

A method and an apparatus for data transmission in a mobile telecommunication system supporting an enhanced uplink service are provided. A Transport Format Combination (TFC) selector determines TF information for data to be transmitted through a first data channel not supporting Hybrid Automatic Repeat reQuest (HARQ) and a second data channel supporting HARQ, and determines gain factors for the first and second data channel, and first and second control channel carrying control information for the first and second data channel. The gain factors are input to a physical channel transmission controller, and the physical channel transmission controller reduces the gain factor for the second channel if total transmit power required for transmission of the channels exceeds the predetermined maximum allowed power. A gain scaler adjusts transmit powers of the channels using the scaled gain factor and gain factors for the first data channel, the first control channel and the second control channel.

Description

[0001] This application is filed under 35 U.S.C 119(a) and claims to Korea Industrial Property on June 9, 2004, August 6, 2004, September 14, 2004, November 17, 2004, and April 7, 2005 Office applications with serial numbers 2004-42300, 2004-62190, 2004-73552, 2004-93947 and 2005-29192 entitled "Method and method for data transmission within a mobile telecommunications system supporting enhanced uplink service" device", the contents of which are hereby incorporated by reference. technical field [0002] The present invention relates to a mobile telecommunication system supporting enhanced uplink services. More particularly, the present invention relates to a power setting method and a power setting device for transmitting data according to characteristics of an uplink channel. Background technique [0003] An Enhanced Uplink Dedicated Channel (hereinafter "E-DCH") has been proposed for improving the performance of uplink packet transmission in Wideband Code Division Multipl...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/18
CPCY02B60/50
Inventor 许允亨李周镐赵俊暎金泳范郭龙准
Owner SAMSUNG ELECTRONICS CO LTD
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