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Full-duplex transmission method for multi-radio frequency unit base station system

A technology of radio frequency unit and base station system, which is applied in the direction of transmission system, digital transmission system, duplex signal operation, etc. It can solve the problems of self-interference suppression difficulties, etc., and achieve the requirements of lower self-interference suppression ability, low transmission power and suppression ability The effect of reduced requirements

Inactive Publication Date: 2017-05-10
SOUTH CHINA UNIV OF TECH +1
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Problems solved by technology

However, the high-performance self-interference suppression under the condition of high transmission power is not an easy technology to implement at present. When the user receives the signal normally, it may reach -90dBm at the weakest time, that is, 10 -9 mW
The transmission power of the base station may reach tens of W
The difference between transmitted and received signals will reach more than 10 orders of magnitude, and self-interference suppression becomes a very difficult problem

Method used

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  • Full-duplex transmission method for multi-radio frequency unit base station system
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  • Full-duplex transmission method for multi-radio frequency unit base station system

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0024] In a specific base station system with multiple radio frequency units, each radio frequency unit is connected to the control and signal processing center of the base station by wire, and the access process of the user terminal is basically the same as that of a common mobile communication system. The user terminal can determine the existence of the service network through the pilot signal regularly released by the base station, assuming that the user terminal initiates the call, such as figure 1 As mentioned above, the specific work steps and processes can be summarized as follows:

[0025] 1. The base station can judge the strength of the signal received by each radio frequen...

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Abstract

The invention discloses a full-duplex transmission method for a multi-radio frequency unit base station system. The multi-radio frequency unit base station system comprises a base station transceiving signal processing system and a plurality of radio frequency units distributed in a cell. Each radio frequency unit independently sends and receives a signal under the control of the base station transceiving signal processing system. The radio frequency units are in communication connection with a user terminal. The full-duplex transmission method comprises the steps that a base station selects a suitable radio frequency unit according to the position of the user terminal in a cell range, wherein synchronous and same-frequency full-duplex communication between the base station and the radio frequency unit is realized; under the full-duplex transmission condition, the base station selects one or more radio frequency units as a downlink signal transmitting unit or selects one or more radio frequency units as an uplink signal receiving unit; and the user terminal receives a signal or transmits the signal. According to the method, the transmission capability of the system is improved, demands for the self-interference rejection capabilities of the base station and the user terminal are reduced, and the processing complexity is reduced.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a full-duplex transmission method of a multi-radio frequency unit base station system. Background technique [0002] As the number of users of wireless services continues to increase and the demand for high data rates continues to increase, how to use limited wireless resources more effectively has always been a goal pursued by people. At present, a large number of communication devices either adopt time division multiplexing or frequency division multiplexing when realizing full-duplex communication. These two methods are actually half-duplex methods for a specific time-frequency resource block. That is, a time-frequency resource block is either used for uplink or downlink. Seeking to realize simultaneous and same-frequency full-duplex transmission on the same time-frequency resource block can double the utilization rate of spectrum resources, which has always b...

Claims

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Application Information

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IPC IPC(8): H04B1/00H04L5/14H04L5/16H04W64/00
CPCH04B1/005H04L5/1423H04L5/1461H04L5/16H04W64/00
Inventor 冯穗力黄裕权曹高雄刘湛张远见胡应添
Owner SOUTH CHINA UNIV OF TECH
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