Transmission mode switching method and device

A transmission mode and switching device technology, applied in transmission systems, digital transmission systems, diversity/multi-antenna systems, etc., can solve problems such as unspecified switching methods

Active Publication Date: 2014-10-01
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology

[0006] The above seven modes have their own application scenarios and advantages, but LTE R8 does not specify the mode of switching between modes, so it is necessary to provide a method for switching transmission modes in a communication system with multiple transmission modes

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  • Transmission mode switching method and device
  • Transmission mode switching method and device

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Embodiment Construction

[0073] In the transmission mode switching method and device of the embodiment of the present invention, the system throughput in different transmission modes is estimated according to the channel quality indicator (CQI) reported by the user equipment, and a switching parameter is calculated according to the statistical result of the system throughput, and according to the switching parameter To achieve adaptive switching.

[0074] The transmission mode switching method of the embodiment of the present invention is used in a communication system supporting the first transmission mode and the second transmission mode, such as figure 1 As shown, the transmission mode switching method includes:

[0075] Step 101, receiving the channel quality indicator CQI reported by the user equipment;

[0076] Step 102, calculating the throughput of the first system when working in the first transmission mode and the throughput of the second system when working in the second transmission mode ...

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Abstract

The embodiment of the invention discloses a transmission mode switching method and device, and aims to realize self-adaptive switching between transmission modes. The transmission mode switching method is applied to a communication system supporting a first transmission mode and a second transmission mode. The transmission mode switching method comprises the following steps: receiving a channel quality indicator (CQI) reported by user equipment; computing first system throughput during working in the first transmission mode and second system throughput during working in the second transmission mode according to the CQI; computing a switching parameter for executing transmission mode switching according to at least one pair of first system throughput and second system throughput computed in a counting period; and when the switching parameter satisfies a preset transmission mode switching rule, executing switching to switch a transmission mode from a current transmission mode to the other transmission mode in the first transmission mode and the second transmission mode. By adopting the transmission mode switching method and device, self-adaptive switching between transmission modes is realized.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a transmission mode switching method and device. Background technique [0002] In wireless communication systems, multiple-input multiple-output technology (MIMO) can significantly improve system performance. MIMO systems can provide space diversity gain, space multiplexing gain and beamforming techniques. The multi-antenna technology has been fully applied in the LTE system. [0003] Seven transmission modes are specified in the LTE R8 system, as shown in the following table. [0004] [0005] Each transmission mode includes two transmission schemes, one of which is a fallback mode, which is mainly used for a transitional state when the channel state changes suddenly or when the transmission mode is switched. The fallback method generally adopts transmit diversity transmission with high reliability. In addition to the fallback mode, another transport mode in ...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04B7/06H04L1/06
Inventor 王飞姜大洁胡臻平
Owner CHINA MOBILE COMM GRP CO LTD
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