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Upward signal transmitting and receiving method in high-speed data access system

A technology of high-speed data access and reception methods, applied in digital transmission systems, transmission systems, code division multiplexing systems, etc., and can solve problems such as other channel interference

Inactive Publication Date: 2003-07-09
HUAWEI TECH CO LTD
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Since the HSDPA system has higher requirements on the transmission quality of uplink channel feedback information, such as the bit error rate of ACK or NACK directly corresponds to the throughput of the wireless link and other performances, therefore, the transmission power of the DPCCH-HS channel is higher than that of the general Uplink channel, which will cause relatively large interference to other channels

Method used

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  • Upward signal transmitting and receiving method in high-speed data access system
  • Upward signal transmitting and receiving method in high-speed data access system
  • Upward signal transmitting and receiving method in high-speed data access system

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] figure 2 is a schematic diagram of the uplink feedback channel structure. from figure 2 It can be seen that the uplink feedback channel includes 1-bit ACK or NACK information and n-bit TFRI information. ACK / NACK is repeated 10 times and sent in one time slot. TRFI is coded into 20 bits and sent in two time slots. Since usually ACK or NACK information is only a state representing the quality of data received at the receiving end, such as an acknowledgment state or a non-acknowledgement state, if ACK or NACK is divided into multiple levels for more precise control, the feedback ACK or NACK information is Data identified with a grade accepts a state of quality rather than a quantitative message. Therefore, ACK or NACK can be added to TRFI information and fed back to the base station. The essence of the present invention is that at the sending end, ...

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Abstract

The present invention discloses a method for sending and receiving up-going signaling in high-speed data access system. At sending end, said method does not directly send ACK or NACK information, and utilzies the frequency-spread code correspondent to different ACK or NACK used by TFR I information to make transmission; at the receiving end, respectively uses the different frequency-spread code to make incoherent demodulation for received TFRI signal, finally utilizes the comparison of coherent peak values to make judgement of that the used frequency-spread code is which one, and further can obtain correspondent ACK or NACK information, so that it can stop information transmission in ACK or NACK correspondent time slot, and can save transmitting power, and can move TFRI to front two time-slots to make transmission, can reduce base station processing time.

Description

technical field [0001] The invention relates to a method for sending and receiving uplink feedback signaling of a wideband code division multiple access (WCDMA) high-speed data access system. Background technique [0002] The WCDMA high-speed data packet access system uses link adaptation methods such as hybrid automatic repeat transmission (HARQ) and adaptive modulation coding (AMC) to transmit high-speed data through the downlink high-speed shared channel (HS-DSCH). In order to meet the requirements of the above technologies, the user equipment (UE) needs to feed back the data reception result and downlink channel quality to the base station. The uplink dedicated physical channel (DPCCH-HS) used to transmit these information contains two parts: one part is HARQ Feedback information, that is, 1-bit acknowledgment or non-acknowledgement information (ACK / NACK), is used to indicate whether the UE has received it correctly this time, and the ACK / NACK is repeated 10 times and se...

Claims

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Application Information

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IPC IPC(8): H04L1/16H04B7/26H04B15/00H04L1/00H04W52/48
CPCY02D30/70
Inventor 魏岳军
Owner HUAWEI TECH CO LTD
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