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A single-carrier point-to-point time-division two-way wireless communication method

A two-way wireless communication, point-to-point technology, applied in the field of communication, can solve problems such as low transmission efficiency, and achieve the effects of reliable performance, flexible bandwidth allocation, and reduced power consumption

Active Publication Date: 2018-08-24
浙江天则通信技术有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Since the time resources of the TDD method are allocated to the uplink and downlink respectively, the transmission efficiency in one direction is not as good as that of the FDD system.

Method used

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Embodiment Construction

[0030] The present invention is described in detail below.

[0031] What the present invention adopts is the train of thought of burst mode, and frame structure is made up of HEAD and DATA two parts, and wherein HEAD is mainly used for symbol synchronization, can play the function of searching frame; The present invention is based on the carrier synchronization method of HEAD special word A two-way synchronization mechanism is designed.

[0032] The key point of time-division duplexing (TDD) is that the near-end device and the remote device must be synchronized on the time slot, and each send a signal at its own time and receive a signal at a set time, which requires the device Or when an abnormality occurs during the transmission, the near-end device and the far-end device can have a process of entering the synchronization state.

[0033] The synchronization mechanism is to let the near-end device and the remote device enter the time-division synchronization state through se...

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Abstract

The invention relates to a single carrier point-to-point time division two-way wireless communication method. A thought of burst mode is adopted; a frame structure consists of HEAD and DATA; the HEAD is mainly used for synchronizing symbols, and can play a role in searching frames; and a two-way synchronization mechanism is skillfully designed on the basis of a carrier synchronization method for HEAD special characters. A two-way transmission function of a single carrier point-to-point wireless communication system is implemented through a time division multiplexing method; an implementation method has low complexity and reliable performance; meanwhile, uplink and downlink bandwidths are allocated flexibly; and the single carrier point-to-point time division two-way wireless communication method is suitable for point-to-point wireless transmission applications in the fields of images, voices and industrial control. In a synchronizing process, only a frame searching function for symbol synchronization is utilized, and handshake can be performed without a need of demodulating and decoding data of an opposite end.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a single-carrier point-to-point time-division two-way wireless communication method. Background technique [0002] Two-way methods for wireless communication systems are mainly time division duplex (TDD) and frequency division duplex (FDD). [0003] FDD receives and transmits on two separated symmetrical frequency channels, and uses a guard frequency band to separate the receiving channel and the transmitting channel. FDD must use paired frequencies, depending on the frequency to distinguish the uplink and downlink, and its unidirectional resources are continuous in time. When FDD supports symmetric services, it can make full use of the uplink and downlink spectrum, but when it supports asymmetric services, the spectrum utilization rate will be greatly reduced; in addition, a certain width of isolation between the uplink and downlink spectrum is required to ensure that the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06H04W56/00H04W72/04
CPCH04J3/0602H04J3/0647H04W56/001H04W72/0446
Inventor 何建平胡俊杰
Owner 浙江天则通信技术有限公司
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