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An adaptive transmission method and system

An adaptive transmission and adaptive measurement technology, applied in the field of wireless communication, can solve the problem of low accuracy of mobile terminal speed estimation, and achieve the effect of reducing the false positive rate

Active Publication Date: 2017-11-03
ZTE CORP
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem solved by the present invention is to provide an adaptive transmission method to solve the problem of low accuracy in the estimation of the mobile terminal speed in the prior art. In addition, the present invention also provides an adaptive transmission system

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  • An adaptive transmission method and system
  • An adaptive transmission method and system

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Embodiment Construction

[0055] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and 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.

[0056] like figure 2 Shown is a flow chart of an adaptive transmission method of the present invention, including,

[0057] Step S201, construct adaptive speed measurement parameters according to the down-conversion frequency of the receiving system and the pilot data interval time Where T is the corresponding maximum function value outside the first monotonic interval of each curve when constructing the first type of zero-order Bessel function corresponding to each channel cross-correlation time interval; is the channel cross-correlation time inte...

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Abstract

Disclosed are an adaptive transmission method and system, so as to solve the problem of low precision of estimation on the speed of a mobile terminal in the prior art. In the present invention, related parameters for adaptive speed measurement are constructed, thereby reducing the error rate in determination of a speed type. Furthermore, without acquisition of the inverse function of a first class zero-order Bessel function in a first monotonic interval, the speed rating of a mobile terminal is determined adaptively by using the parameters, so as to adaptively determine the high speed, medium speed, and low speed of a mobile terminal.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to an adaptive transmission method and system. Background technique [0002] 3GPP LTE (Long Term Evolution, Long Term Evolution System) technology, as an evolution of UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System) technology, aims to provide high-quality multimedia access services for high-speed mobile users. In the LTE system, the downlink adopts OFDMA (Orthogonal Frequency Division Multiple Access, Orthogonal Frequency Division Multiple Access technology), and the uplink adopts SC-FDMA (Single-carrier Frequency-Division Multiple Access, single-carrier Frequency-Division Multiple Access technology). However, OFDMA technology is very sensitive to Doppler spread caused by high-speed mobile, because Doppler spread can cause interference between subcarriers, degrading system performance. Therefore, in order to eliminate the influ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/22
CPCH04W64/006G01S11/02
Inventor 李建国秦洪峰刘巧艳孙岩王雯芳
Owner ZTE CORP