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User type switching method, device and system for downlink FFR

A user type and user technology, applied in electrical components, wireless communication, etc., can solve problems such as sector edge interference, reverse power saturation, and affecting normal calls of mobile terminals, so as to ensure normal use, reduce downlink signal interference, and improve The effect of resource utilization and spectral efficiency

Inactive Publication Date: 2015-04-01
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since broadband mobile communication systems have high requirements on spectrum efficiency, the reuse factor should be as close to 1 as possible, which makes adjacent sectors use the same frequency resources, resulting in serious interference at the sector edge
When the mobile terminal is affected by interference, it needs to increase the reverse power, which may cause reverse power saturation, which will deteriorate the reverse performance and affect the normal communication of the mobile terminal.

Method used

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  • User type switching method, device and system for downlink FFR
  • User type switching method, device and system for downlink FFR
  • User type switching method, device and system for downlink FFR

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Embodiment Construction

[0021] In order to reduce the impact of interference on the mobile terminal and improve the spectral efficiency of the system, an embodiment of the present invention provides a downlink FFR user type switching method, which can effectively reduce the interference of the mobile terminal, improve the call quality of the mobile terminal, and improve the system resource utilization. The method is as follows: after the base station determines that the mobile terminal is connected, it sends a scanning instruction message to the mobile terminal, instructs the mobile terminal to scan and obtain the signal strength of the interfering sector, receives the signal strength of the serving sector sent by the mobile terminal, and the mobile terminal The terminal calculates the isolation degree based on the signal strength of the interfering sector obtained by scanning the instruction message, and based on the signal strength of the serving sector and the interfering sector, compares the isola...

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Abstract

The invention discloses an user type switching method, device and system for downlink FFR (Fractional Frequency Reuse), for lowering mobile terminal interference and improving system resource utilization rate. The method comprises the steps that: a base station confirms the switch-in of a mobile terminal, and then distributes a scanning indication message to the mobile terminal to indicate the mobile terminal to perform scanning and acquire interference sector signal strength; a service sector signal-strength sent by the mobile terminal and an interference sector signal-strength acquired by the mobile terminal according to the scanning indication message are received; an isolation degree is calculated out based on the service sector signal-strength and the interference sector signal-strength; and the isolation degree and preset conditions are compared, and when the preset conditions are met, the user type of the mobile terminal is switched. The method can effectively lower the downlink signal interference of the mobile terminal and improve both resource utilization rate and spectrum efficiency. The invention also discloses an user type switching device and system for downlink FFR.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a downlink FFR user type switching method, device and system. Background technique [0002] In recent years, Orthogonal Frequency Division Multiple Access (OFDMA) technology has become a mainstream technology of wireless communication physical layer technology because it can effectively combat multipath interference and narrowband interference, and has high spectrum efficiency. Worldwide Interoperability for Microwave Access (WiMAX) adopts OFDMA technology as the core technology of the physical layer, and the WiMAX802.16e standard and the 802.16m standard under development, which take into account the characteristics of mobility and broadband, are the next generation of mobile communication standards. strong competitor. [0003] In the WiMAX wireless broadband network, OFDMA technology is used to divide wireless resources into multiple time slots in time, and divide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/30
Inventor 张进唐枫
Owner ZTE CORP