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Automatic hybrid retransmission method and system based on dynamic TDD (time division duplex)

A hybrid retransmission and automatic technology, applied in the field of communication, can solve the problems of increasing the overall delay of the first communication terminal, the inability of the first communication terminal to realize the retransmission behavior, and the inability of the first communication terminal to know the dynamic changes of TDD configuration, etc. Achieve the effects of reducing delay, maintaining backward compatibility, and improving system performance

Active Publication Date: 2013-08-14
DONGGUAN YULONG COMM TECH +1
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Problems solved by technology

[0008] At the same time, due to the eIMTA function, the TDD configuration actually used by the system shows irregular dynamic changes in the time domain, and this dynamic change of the TDD configuration is unknown to the first communication terminal
Therefore, if there is no reasonable solution to adjust the original HARQ behavior of the first communication terminal, it will cause the first communication terminal to fail to achieve effective retransmission behavior, thereby greatly affecting the system performance of the first communication terminal, increasing the The overall delay of the first communication terminal

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  • Automatic hybrid retransmission method and system based on dynamic TDD (time division duplex)
  • Automatic hybrid retransmission method and system based on dynamic TDD (time division duplex)
  • Automatic hybrid retransmission method and system based on dynamic TDD (time division duplex)

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[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0044] image 3 It is a schematic structural diagram of an automatic hybrid retransmission system based on dynamic TDD in the present invention. The automatic hybrid retransmission system 100 includes a configuration module 10, an analysis module 20, and a restriction module 30, wherein:

[0045] The configuration module 10 is configured to configure the TDD reference configuration of the first communication terminal that does not support the dynamic TDD function. Generally, the TDD reference configuration is a TDD configuration broadcast by the base station to the first communication terminal thr...

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Abstract

The invention is applicable to the technical field of communication, and provides an automatic hybrid retransmission method based on dynamic TDD. The method comprises the steps as follows: TDD reference configuration of a first communication terminal which doesn't support the dynamic TDD function is configured; relations of transmission directions of corresponding subframes between the TDD reference configuration and the current TDD actual configuration are analyzed; and data scheduling for the automatic hybrid retransmission is allowed to be performed at subframes with the same transmission directions, and the data scheduling for the automatic hybrid retransmission is prohibited at subframes with different transmission directions. Correspondingly, the invention further provides an automatic hybrid retransmission system based on the dynamic TDD. Therefore, by virtue of a scheduling limiting means, the first communication terminal which doesn't support the dynamic TDD function can still perform the HARQ (hybrid automatic repeat request) operation normally when the TDD configuration changes dynamically.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an automatic hybrid retransmission method and system based on dynamic TDD. Background technique [0002] In recent years, the new generation of wireless communication technology has developed rapidly. Compared with the third generation of wireless communication technology, the new generation of mobile communication technology has many advantages such as simple network architecture, small signal delay, high communication quality and fast speed. From the classification of uplink and downlink business multiplexing methods, the new generation of mobile communication technology can be divided into TDD (Time Division Duplex, time division duplex) system and FDD (Frequency Division Duplex, frequency division duplex) system. In the TDD system, seven different wireless frame structures are defined in the TDD system of the new generation wireless communication system, such a...

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Application Information

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IPC IPC(8): H04L1/18H04W72/12
Inventor 张晨璐刘峰
Owner DONGGUAN YULONG COMM TECH
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