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Method, device and data frame for sensing spectrum

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

Active Publication Date: 2015-01-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Embodiments of the present invention provide a method, device, and data frame for spectrum sensing. The method for spectrum sensing includes: determining configuration information of a spectrum sensing guard interval in a guard period GP used to prevent interference, where the spectrum sensing guard interval is used to prevent interference caused by signal transmission to spectrum sensing, and the configuration information is used to indicate a position of the spectrum sensing guard interval in the guard period; setting a quiet period in the guard period according to the configuration information of the spectrum sensing guard interval; and performing the spectrum sensing in the quiet period. In the present invention, the guard period in a transmission frame is used again, and the quiet period is set in the guard period, thereby ensuring the compatibility with an existing protocol; and the spectrum sensing guard interval including a front guard interval and / or a back guard interval is set, thereby effectively avoiding the interference caused by the signal transmission to the spectrum sensing, and the spectrum sensing is performed in the condition that the signal transmission is not affected.

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 Patents(China)
IPC IPC(8): H04B17/30
CPCH04W16/14H04L27/0006
Inventor 陈磊
Owner HUAWEI TECH CO LTD
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