Method for transmitting data in communication system, communication device and communication system
A communication system and data transmission technology, which is applied in the field of communication, can solve the problems of waste of communication resources, reduce transmission efficiency, and low reliability of data transmission, and achieve the effects of improving reliability, high transmission efficiency, and avoiding waste
Active Publication Date: 2009-07-01
CHINA MOBILE COMM GRP CO LTD
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[0020] Embodiments of the present invention provide a method for transmitting data in a communication system, a communication device, and a communication system to solve the problem in the prior art that the reliability of data transmission is low or the transmission efficiency is low due to the inability to select an appropriate number of overlapping encodings. , resulting in a waste of communication resources
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[0046] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0047]The solutions described in the various embodiments of the present invention are all based on the OVCDM technology.
[0048] Such as image 3 As shown in FIG. 1 , it is a schematic flowchart of the steps of the method for transmitting data in the communication system in Embodiment 1 of the present invention. It can be seen from the figure that the method includes the following steps:
[0049] Step 301: Detect the current channel quality.
[0050] The detection operation in this step can be performed by the receiving side. The specific execution method is: before sending the data, the sending side sends a fixed message to the receiving side. Various parameters, and determine the current channel quality between the sending side and the receiving side according to the parameters.
[0051] In the uplink data transmission process, the sending side is the terminal,...
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The invention discloses a method for data transmission in a communication system. The method comprises the following steps: detecting a current channel quality; determining the overlapped code times relative to the detected channel quality according to the relationship between the channel quality and the overlapped code times; performing the coding operation of overlapped code division multiplexing to the data required for transmission according to the determined overlapped code times; and transmitting the coded data. The method can improve the reliability of data transmission under the condition of bad channel quality, and can increase the transmission efficiency and reduce the waste of resources under the condition of good channel quality. The invention also discloses a communication device and a communication system.
Description
technical field [0001] The invention relates to data transmission technology in the field of communication, in particular to a method for transmitting data in a communication system, a communication device and a communication system. Background technique [0002] Overlapped Code Division Multiplexing (OVCDM) is a high spectral efficiency coding multiplexing technology, which uses parallel convolutional coding with a code rate higher than 1 to greatly improve the communication system capacity and spectrum efficiency. The scheme of encoding and decoding can be referred to as performing OVCDM encoding and decoding operations on data. [0003] A specific process of implementing OVCDM encoding of data symbols to realize broadband wireless transmission is as follows: figure 1 As shown, there are 15 data symbols in the input serial data, and the number of overlapping K=3, that is, three data symbols are selected for serial-parallel operation each time, including the following step...
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IPC IPC(8): H04B1/707H04L1/00H04J13/00
CPCH04L1/005H03M13/41H04L1/0041H03M13/23H04L1/0059H04L1/0009H04L1/0065
Inventor 刘光毅韩璐王启星黄宇红
Owner CHINA MOBILE COMM GRP CO LTD