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A method for half-duplex digital communication relay with same frequency dual time slot

A digital communication and dual time slot technology, applied in the field of communication, can solve the problems of increasing the pressure on frequency resources and increasing the investment cost of network construction, and achieve the effects of solving co-channel interference, extending communication distance and saving frequency resources

Active Publication Date: 2019-01-25
QUANZHOU SFE ELECTRONICS TECH
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AI Technical Summary

Problems solved by technology

However, the traditional relay uses a different-frequency relay method, which has a transceiver circuit, and requires an antenna and a duplexer, occupying two frequencies, which not only increases the investment cost of network construction, but also increases frequency resources. pressure

Method used

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  • A method for half-duplex digital communication relay with same frequency dual time slot

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Embodiment Construction

[0013] In order to further understand the structure, features and other purposes of the present invention, the attached preferred embodiments are now described in detail with accompanying drawings as follows. The embodiments described in the accompanying drawings are only used to illustrate the technical solutions of the present invention and are not limiting this invention.

[0014] Such as figure 1 as shown, figure 1 It is a schematic diagram of two groups of user terminals transmitting wireless signals in the same frequency in the present invention; it includes at least two groups of user terminals and base stations (not shown in the figure) that communicate in the same frequency, and the base station periodically transmits broadcast signals. The user terminals in the network coverage area radiated by the base station feed back the feedback signal with its own terminal identification code to the base station, so that the base station can grasp the user terminals that can e...

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Abstract

A method for half duplex digital communication relay with same frequency dual time slot comprises a transmitting terminal A and a receiving terminal B communicating at least in the same frequency, a transmitting terminal C and a receiving terminal D, a base station, a transmitting terminal A and a transmitting terminal C applying for an idle time slot and alternately transmitting a first radio signal and a second radio signal; When the receiving terminal B or the receiving terminal D simultaneously receives the first radio signal and the second radio signal, the receiving terminal B or the receiving terminal D transmits a delay signal to the transmitting terminal A or the transmitting terminal C through the base station, The transmitting terminal A or the transmitting terminal C applies for two consecutive idle time slots and transmits the radio signal again, and the receiving terminal B or the receiving terminal D continues to receive the radio signal in one time slot and forwards thesecond radio signal or the first radio signal in the other time slot. The method of the invention enables each terminal to act as a relay in the same frequency, and transmits communication information of a previous terminal for another terminal, thereby saving frequency resources.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a half-duplex digital communication relay method with the same frequency and double time slots. Background technique [0002] In the wireless communication system, due to the attenuation of the path of electromagnetic waves, especially the electromagnetic waves using high-frequency carriers, and the shelter of buildings, etc., the coverage of the base station is limited, so that the wireless communication signal strength in some areas is low. The communication quality of the mobile station as the terminal will become poor. Therefore, in order to solve the problem of small base station coverage caused by electromagnetic wave attenuation, it is usually necessary to use a relay station to relay the wireless communication signals between the base station and the mobile station to compensate for signal attenuation. However, the traditional relay uses a different-frequency relay...

Claims

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Application Information

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IPC IPC(8): H04L5/16
CPCH04L5/16
Inventor 郭志明庄雪红吕吉榕
Owner QUANZHOU SFE ELECTRONICS TECH
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