Method and device for detecting radio frequency channel in worldwide interoperability system for microwave access

A radio frequency channel and microwave interconnection technology, applied in the field of communication, can solve the problem of inability to detect and monitor channels

Active Publication Date: 2015-05-13
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention is proposed in view of the problem in the prior art that it is impossible to detect and monitor channels other than the channel for transmitting pilot signals. Therefore, the main purpose of the present invention is to provide a radio frequency channel in the global microwave interconnection access system. Detection method and device to solve at least one of the above problems

Method used

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  • Method and device for detecting radio frequency channel in worldwide interoperability system for microwave access
  • Method and device for detecting radio frequency channel in worldwide interoperability system for microwave access
  • Method and device for detecting radio frequency channel in worldwide interoperability system for microwave access

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Embodiment 1

[0025] figure 1 It is a preferred flowchart of a method for detecting a radio frequency channel in the Global Interconnection for Microwave Access System according to an embodiment of the present invention, which includes the following steps:

[0026] S102, acquiring baseband power input by the radio frequency channel and output feedback power;

[0027] S104, calculate and obtain the channel gain of the above-mentioned radio frequency channel through the above-mentioned baseband power and the above-mentioned feedback power;

[0028] S106. Determine whether the radio frequency channel is abnormal by comparing the channel gain with a preset standard channel gain.

[0029] In this preferred embodiment, the channel gain of the radio frequency channel is obtained by calculating the baseband power and the feedback power, so that the detection and monitoring of channels other than the channel for transmitting pilot signals can be realized, which solves the problem There is a techni...

Embodiment 2

[0037] figure 2 It is a preferred structural diagram for power sampling according to an embodiment of the present invention, which includes: a radio frequency control board (TRX) 202, a power amplifier (PA) 204, a radio frequency filtering and transmitting unit (RFE) 206, and digital predistortion A system (DPD) 208, wherein the DPD system 208 is used to collect baseband power and feedback power.

[0038] When the entire radio frequency channel is normal, its gain is also constant, so when the input baseband power is constant, the output feedback power is also constant. If the feedback power is too small, it indicates that the radio frequency channel is abnormal. That is, if the gain of the entire radio frequency channel is normal, the output feedback power is also normal, so it can be judged whether the radio frequency channel is normal by calculating the gain of the entire radio frequency channel.

[0039] The gain on the channel is the output power minus the input power, ...

Embodiment 3

[0050] Figure 5 It is a preferred structural diagram of a radio frequency channel detection device in the global microwave interconnection access system according to an embodiment of the present invention, which includes: an acquisition unit 502, which is used to acquire the input baseband power and output feedback power of the radio frequency channel; The unit 504 is connected to the acquisition unit 502, and is used to calculate the channel gain of the radio frequency channel through the baseband power and the feedback power; the judgment unit 506 is connected to the calculation unit 504, and is used to compare the channel gain with the The preset standard channel gain is used to judge whether the radio frequency channel is abnormal.

[0051] In this preferred embodiment, the channel gain of the radio frequency channel is obtained by calculating the baseband power and the feedback power, so that the detection and monitoring of channels other than the channel for transmittin...

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Abstract

A detection method and apparatus for a radio frequency (RF) channel in a Worldwide Interoperability for Microwave Access (Wimax) system are disclosed in the present invention. The method includes: acquiring a base band power of an RF channel input and a feedback power of an RF channel output; calculating a channel gain of the RF channel based on the base band power and the feedback power; judging whether abnormity occurs with the RF channel by comparing the channel gain with a preset standard channel gain. The problem that the channels except for the channel for transmitting pilot frequency signals can not be detected and monitored in the prior art is solved with the invention, the user access is ensured not to be influenced.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for detecting a radio frequency channel in a Worldwide Interconnection for Microwave Access (Wimax) system. Background technique [0002] In the Wimax system, it is necessary to monitor each radio frequency channel of the RRU (remote radio frequency unit), so as to prevent the transmission power of the entire RRU from being abnormal due to abnormalities, thereby affecting user access. The radio frequency channel gain is a very important radio frequency performance parameter of the RRU, which is often used to indicate whether the radio frequency channel is normal. In general, the RF channel is a very stable fixed value, but as the temperature changes, the gain of the RF channel may change, so the signal output by the RRU will also change. The direct impact is the distance and quality of the output signal covered by the RRU Instability, which affects user access. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/08H04W52/52H04W52/54H04L1/16
CPCH04B17/18H04B17/17
Inventor 代海军张伟李建洪
Owner ZTE CORP
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