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Method, device and data frame for sensing spectrum

A technology for sensing spectrum and data frame, applied in the field of sensing spectrum, it can solve the problems of increasing system complexity, and achieve the effect of increasing system complexity and ensuring compatibility.

Active Publication Date: 2013-05-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this silent period setting scheme needs to reserve time for the silent period in the frame structure
If this silent period setting method is introduced into the existing system, such as the TD-LTE system, the existing protocol needs to be greatly changed, and the system complexity will increase significantly

Method used

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  • Method, device and data frame for sensing spectrum
  • Method, device and data frame for sensing spectrum
  • Method, device and data frame for sensing spectrum

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them.

[0018] The technical scheme of the embodiment of the present invention can be applied to various communication systems, such as: GSM, Code Division Multiple Access (CDMA, Code Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access Wireless), General Packet Radio Service (GPRS, General Packet Radio Service), Time Division Duplex Long Term Evolution (TD-LTE, TD-SCDMA Long Term Evolution), etc.

[0019] User equipment (UE, User Equipment), also called mobile terminal (Mobile Terminal), mobile user equipment, etc., can communicate with one or more core networks via a radio access network (for ex...

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Abstract

The invention discloses a method, a device and a data frame for sensing spectrum. The method for sensing spectrum includes ensuring configuration information of a spectrum sensing protection interval used to avoid a protection time GP from being interfered. The spectrum sensing protection interval is used to avoid the spectrum sensing being interfered from the signal transmission and the configuration information aims at indicating the location of the spectrum sensing protection interval in the protection time. A quiet period is set in the protection time based on the configuration information of the spectrum sensing protection interval and, in the quiet period, the spectrum sensing is performed. The method guarantees the compatibility with the present agreement through reusing the protection time in data frame and setting quiet time in the protection time. Further, through setting the spectrum sensing protection interval which includes a front protection interval and / or a back protection interval, the method effectively avoids the interference of signal transmission to spectrum sensing and the spectrum sensing can be performed without affecting the signal transmission.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a method, device and data frame for sensing frequency spectrum. Background technique [0002] Cognitive Radio (CR) is a promising technology to solve the current shortage of spectrum resources. Through the cognitive radio technology, these frequency bands can be dynamically accessed without interfering with the primary user (PU, Primary User), so as to improve spectrum utilization. Currently, the Federal Communications Commission of the United States has officially issued regulations to allow devices to access TV white space (TVWS, TV white space) without causing interference. In addition, standards such as IEEE 802.22 being developed by the Institute of Electrical and Electronics Engineers of the United States also use TVWS as the target frequency band for spectrum sharing. [0003] Spectrum sensing is one of the core technologies of cognitive radio. Its purpose is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00
CPCH04W16/14H04L27/0006
Inventor 陈磊
Owner HUAWEI TECH CO LTD
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