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Method, device and system for transmitting data based on time division duplex mode

A mode and data technology, applied in the field of data transmission, can solve problems such as terminal performance impact, and achieve the effect of ensuring data transmission performance

Active Publication Date: 2009-10-28
DATANG MOBILE COMM EQUIP CO LTD
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  • Claims
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Problems solved by technology

If another approach is considered, that is, in order to ensure the performance of the LTE system, the base station uses the same effective rate matching code rate in TDD mode as in FDD mode, the buffer size of the terminal needs to be greatly increased, which will affect the performance of the terminal
Therefore, in the prior art, it is not advisable to directly correspond the type level in the FDD mode to the application of the TDD mode

Method used

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  • Method, device and system for transmitting data based on time division duplex mode
  • Method, device and system for transmitting data based on time division duplex mode
  • Method, device and system for transmitting data based on time division duplex mode

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Embodiment Construction

[0063] In order to make the objects 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, and these descriptions are non-limiting.

[0064] In the method provided by the present invention, there are terminal type levels from low to high, and each type level corresponds to the index maximum transmission block size, effective rate matching code rate, terminal buffer size, buffer size and process number. The above type classes may be identical to those defined in the current standard. On this basis, the present invention adds a highest type level, the corresponding maximum transport block size and effective rate matching code rate are the same as those corresponding to the highest type level before the increase, and the corresponding buffer size conforms to the maximum Process data transfer requirements.

[0065] Taking the maximum number of processes in TDD ...

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Abstract

The invention discloses a method for transmitting data based on time division duplex mode. The highest type class of a terminal is increased, corresponding maximum transmission block size and effective speed matching code rate are the same as those corresponding to the highest type class before the increase, and a corresponding terminal cache size meets the requirement of maximum process data transmission in a time division duplex (TDD) mode. A base station acquires the type class of the terminal; when the acquired type class is judged as the lowest type class, the effective speed matching code rate is determined again according to an index corresponding to the type class, and data is transmitted in the TDD mode; and otherwise, the effective speed matching code rate is determined according to the index corresponding to the acquired type class and an index corresponding to a type class one class lower than the acquired type class, and the data is transmitted in the TDD mode. The invention also discloses a device and a system for transmitting the data based on the TDD mode. The invention can utilize the prior type class of the terminal to the utmost, and ensure the data transmission performance in the TDD mode.

Description

technical field [0001] The present invention relates to data transmission technology, in particular to a data transmission method, device and system based on Time Division Duplex (TDD, Time Division Duplexing) mode. Background technique [0002] The third generation mobile communication (3G, 3 rd Generation) adopts Code-Division Multiple Access (CDMA, Code-Division Multiple Access) to support multimedia services, and will have high competitiveness in the next few years. In order to ensure that 3G maintains this kind of competitiveness in a longer period of time, the third generation partnership project (3GPP, Third Generation Partnership Project) has started the long-term evolution (LTE, Long Term Evolution) research project of 3G radio interface technology, its It includes important parts such as reducing delay, increasing user data rate, improving system capacity and coverage, and reducing operator costs. [0003] In the current LTE system, when the base station sends d...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L12/56
Inventor 索士强喻晓冬肖国军丁昱
Owner DATANG MOBILE COMM EQUIP CO LTD
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