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Multiplexing method for time-frequency resource in radio communication system

A wireless communication system and time-frequency resource technology, applied in the field of wireless communication system allocation of time-frequency resources, can solve the problems of not necessarily good transmission quality and lower transmission quality of transmitted data, so as to achieve no reduction in transmission quality and realize multi-user multiplexing use, to achieve the effect of diversity gain

Active Publication Date: 2010-01-06
HUAWEI TECH CO LTD
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Problems solved by technology

[0009] However, since in this TTI, the selection of the scheduling frequency band is determined according to the channel information fed back by the channel estimation of the last or several TTIs, that is, the subcarriers with good transmission quality in the last or several TTIs are selected as the scheduling Frequency band, for fast-moving users, subcarriers with good transmission quality in the previous TT1 may not have good transmission quality in this TTI, which will cause fast-moving users to use the scheduling frequency band in this TTI The transmission quality of the time-frequency pattern unit transmission data is degraded

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  • Multiplexing method for time-frequency resource in radio communication system
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  • Multiplexing method for time-frequency resource in radio communication system

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[0032] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail by giving specific embodiments and referring to the accompanying drawings.

[0033]In the wireless communication system, the present invention allocates different types of time-frequency patterns for users with different needs: for users with high moving speed, the allocated time-frequency patterns are among the time-frequency pattern groups in the cell generated according to the prior art One or more time-frequency patterns; for a user with a low moving speed, the allocated time-frequency pattern is the time-frequency pattern unit in the scheduling frequency band in the time-frequency pattern group in the cell generated according to the prior art. In this way, it can not only ensure the multi-user classification of users with slow moving speed and realize diversity gain, but also ensure that the transmission qualit...

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Abstract

The invention discloses a time and frequency resource multipurpose method of wireless communication system, which comprises the following steps: A. distributing time and frequency pattern group for deme of wireless communication system in each transmission time deme TTI; B. dividing dispatching band on the subcarrier of time frequency plane in the deme; dividing dispatching band for each user or channel in the deme; C. dividing the selected time frequency pattern in the time frequency pattern group to each user or channel in the deme without intersection. The invention can realize diversity gain, which improves transmission quality of time frequency pattern transmission data.

Description

technical field [0001] The present invention relates to a technology for allocating time-frequency resources in a wireless communication system, in particular to a method for multiplexing time-frequency resources in a wireless communication system using frequency-hopping Orthogonal Frequency Division Multiplexing (OFDM) technology. Background technique [0002] Since the 1990s, OFDM-based multi-carrier technology has been developed in wireless communication systems. OFDM technology divides the time-frequency resources of the wireless communication system into several orthogonal narrowband sub-channels in the frequency domain, and high-speed data streams are transmitted in parallel on each sub-channel through serial-to-parallel conversion. Due to the narrowband characteristics of the sub-channels, the influence of multipath can be overcome and the orthogonality between the sub-channels can be maintained, thereby ensuring that the interference between users in the cell is very...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/26H04L27/26
Inventor 陈茅茅曲秉玉
Owner HUAWEI TECH CO LTD
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