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Communication method utilizing frequency offset, device, base station and base station control device

A technology of frequency offset and base station, which is applied in the field of communication technology using frequency offset, and can solve problems such as terminal dropped call voice quality, dropped call voice quality, and degradation

Inactive Publication Date: 2010-09-01
安徽翰邦科技咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the actual test, it is found that many terminals are prone to call drop or voice quality degradation when VAMOS is multiplexed
However, it is not clear in the prior art what causes terminal call drop or voice quality degradation

Method used

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  • Communication method utilizing frequency offset, device, base station and base station control device
  • Communication method utilizing frequency offset, device, base station and base station control device
  • Communication method utilizing frequency offset, device, base station and base station control device

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0021] Under the existing network architecture, the terminal may drop calls because the carrier-to-interference ratio is too high or too low, but the inventor of the present invention has found through a lot of testing and analysis that the reason for the terminal call drop is mainly because the terminal It is caused by too large deviation between the reference frequency of the network side and the reference frequency of the network side. Due to the large deviation between the reference frequency of the terminal and the reference frequency of the network side, the terminal fails to receive t...

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Abstract

The embodiment of the invention discloses a communication method utilizing frequency offset, a device, a base station and a base station control device, wherein the method mainly comprises the steps of carrying out demodulation on an uplink signal sent by a terminal, and acquiring the first frequency deviation between the carrier frequency of the uplink signal and the reference frequency of the network side; and judging whether the first frequency deviation meets the preset out-of-step condition or not, and determining that the terminal is in frequency out-of-step situation when the first frequency deviation meets the preset out-of-step condition. The technical scheme of the embodiment of the invention can detect the frequency out-of-step phenomenon of the terminal, make up for the blank that the prior art does not have the mechanism for detecting the frequency out-of-step situation of the terminal and further analyze the reasons of reducing the voice quality or leading the terminal to cause call drop.

Description

technical field [0001] The present invention relates to communication technology, in particular to a communication technology using frequency offset. Background technique [0002] With the development of the wireless communication market, the requirements for network capacity and performance are getting higher and higher. For example, in the Global System for Mobile Communications (Global System for Mobile Communications, GSM), network capacity can be increased by increasing frequency reuse or utilizing orthogonal subchannels (Voice services over Adaptive Multi-user Orthogonal Subchannels, VAMOS). [0003] In VAMOS technology, multiple mobile phones are assigned to the same wireless channel at the same time, and are distinguished by different training sequences. Based on this technology, an original channel can be divided into multiple sub-channels, so that resources that can only be allocated to one user can be allocated to multiple users at the same time. No matter wheth...

Claims

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Application Information

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IPC IPC(8): H04B1/707H04W24/08H04W52/24
Inventor 王超
Owner 安徽翰邦科技咨询有限公司
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