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Same-frequency interference suppression method and corresponding communication terminal

A co-channel interference and communication terminal technology, applied in multiplexing communication, electrical components, orthogonal multiplexing systems, etc., can solve problems such as insufficient utilization of spectrum resources, and achieve the effect of simple equipment structure

Pending Publication Date: 2021-04-16
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0004] At present, the methods for suppressing co-channel interference between LTE-R system cells are mainly partial frequency schemes and soft frequency reuse schemes. These two schemes have the advantages of flexible and simple deployment and obvious anti-interference effects, but both have insufficient utilization of spectrum resources. Shortcomings

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  • Same-frequency interference suppression method and corresponding communication terminal
  • Same-frequency interference suppression method and corresponding communication terminal
  • Same-frequency interference suppression method and corresponding communication terminal

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Embodiment Construction

[0026] The technical content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] In order to solve the same-frequency interference problem introduced by the same-frequency network of strip-covered cells to improve the system spectrum utilization rate, such as figure 1 As shown, the present invention provides a co-channel interference suppression method, which is applied to such as figure 2 The communication terminal 10 shown includes a control terminal 11 and two antennas 12 . The method comprises the steps of:

[0028] Step S1: the control terminal obtains the reference signal received power during the communication process of the user.

[0029] Taking the LTE-R system in the railway scene as an example, when the user interacts with a certain serving cell, the user selects the antenna corresponding to the base station of the serving cell through the communication terminal 10 to ...

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Abstract

The invention discloses a same-frequency interference suppression method and a corresponding communication terminal. The method is applied to a communication terminal. The communication terminal comprises a control end and at least two antennas. The method comprises the steps: S1, enabling a control end to obtain reference signal receiving power in the user communication process; S2, judging whether to select a corresponding antenna for switching or not according to the reference signal receiving power. According to the method, an existing network does not need to be changed, and only the structure of the communication terminal is changed, so that a user can perform data exchange with a serving cell through only one directional antenna and cannot perform data exchange with a non-serving cell, the spectrum utilization rate is ensured, and meanwhile, the same-frequency interference problem of a band-shaped coverage cell is effectively inhibited.

Description

technical field [0001] The invention relates to a same-frequency interference suppression method, and also relates to a corresponding communication terminal, belonging to the technical field of communication. Background technique [0002] The so-called co-channel interference refers to the interference caused by the unwanted signal to the receiver receiving the useful signal of the same frequency when the unwanted signal and the useful signal use the same carrier frequency. For the communication system of the cell system, in order to improve the utilization rate of frequency and increase the capacity of the system, frequency multiplexing is generally used to realize data transmission. This results in many small geographical areas using the same frequency in the service area covered by the provider, so the small geographical areas are called co-frequency cells. The interference generated between these co-frequency cells is called co-frequency interference. At present, my co...

Claims

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Application Information

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IPC IPC(8): H04J11/00
CPCY02D30/70
Inventor 费丹丁建文孙斌牛燕菲孙鹏张东升
Owner BEIJING JIAOTONG UNIV
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