Method and equipment for spectrum sensing

A spectrum sensing and to-be-sensed technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as increased transmission delay, reduce transmission delay, improve system throughput, and reduce waste.

Active Publication Date: 2014-12-17
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, due to the periodic interruption of radio transmission, the possible transmission delay will also increase

Method used

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  • Method and equipment for spectrum sensing
  • Method and equipment for spectrum sensing
  • Method and equipment for spectrum sensing

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Experimental program
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Embodiment 1

[0046] Aiming at the problems existing in the prior art, Embodiment 1 of the present invention provides a spectrum sensing method, which is applicable to a cognitive radio system adopting OFDM multiple access mode, including but not limited to TD-LTE (Time Division-Long Time Evolution, time-division long-term evolution) system, LTE system, WiMAX (Worldwide Interoperability for Microwave Access, global microwave interconnection) system, etc., such as Figure 4 As shown, the spectrum sensing method includes the following steps:

[0047] In step 401, a network side device (such as a base station device) determines frequency resources and time resources that the cognitive radio system needs to be silent. Wherein, the way of determining the time resource can be configured according to requirements.

[0048] In a preferred implementation manner of the embodiment of the present invention, the network-side device determines the frequency resources that the cognitive radio system need...

Embodiment 2

[0101] Embodiment 2 of the present invention provides a spectrum sensing method, which is applicable to cognitive radio systems using OFDM multiple access, including but not limited to TD-LTE systems, LTE systems, WiMAX systems, etc., such as Figure 16 As shown, the spectrum sensing method includes the following steps:

[0102] Step 1601, the terminal device receives the silence pattern notified by the network side device. Wherein, the silence pattern is a silence pattern generated and notified to the terminal device by the network side device using the frequency resource and time resource after determining that the cognitive radio system needs to silence the frequency resource and time resource.

[0103]In a preferred implementation of the embodiment of the present invention, when selecting to perform in-band spectrum sensing, the network side device determines that the cognitive radio system needs to be silent according to the prior information of the authorized system corr...

Embodiment 3

[0116] Based on the same inventive concept as the above method, an embodiment of the present invention also provides a network side device, such as Figure 17 As shown, the network side equipment includes:

[0117] A determining module 11, configured to determine frequency resources and time resources that the cognitive radio system needs to be silent;

[0118] A generating module 12, configured to generate a silent pattern of a cell by using the frequency resource and time resource;

[0119] The first processing module 13 is configured to use the signal received at the resource position corresponding to the silence pattern to perform spectrum sensing; and / or send the silence pattern to the terminal device in the cell, and the terminal device uses Spectrum sensing is performed on signals received at resource positions corresponding to the silence pattern.

[0120] The determination module 11 is specifically configured to determine the frequency resource that the cognitive ra...

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Abstract

The invention discloses a method and equipment for spectrum sensing. The method comprises the following steps that network side equipment determines frequency resources and time resources, which need to be silent, of a cognitive radio system; the network side equipment utilizes the frequency resources and the time resources to generate a silent pattern of a cell; the network side equipment utilizes a signal received on the resource position corresponding to the silent pattern to carry out spectrum sensing; and / or the network side equipment transmits the silent pattern to terminal equipment in the cell, and the terminal equipment utilizes the signal received on the resource position corresponding to the silent pattern to carry out spectrum sensing. According to the embodiment of the invention, the influence of in-band spectrum sensing on the throughput capacity of the cognitive radio system can be reduced to improve the throughput of the system, and the use efficiency of the spectrum of the cognitive radio system is improved; in addition, interrupt of a communication link cannot be caused by executing the spectrum sensing, so that the transmission time delay due to the spectrum sensing can be reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a spectrum sensing method and equipment. Background technique [0002] With the rapid development of the mobile communication industry, the contradiction between the growing demand for broadband wireless communication and the limited spectrum resources is becoming increasingly obvious. Although the LTE (Long Term Evolution, long-term evolution) system has adopted OFDM (Orthogonal Frequency Division Multiplexing, it is Cross-frequency division multiplexing), MIMO (Multiple-Input Multiple-Output, Multiple-Input Multiple-Output) and other technologies to improve spectrum utilization, but these cannot fundamentally solve the problem of spectrum resource shortage. With the rapid development of mobile services, telecom operators will face a more severe problem of spectrum resource shortage. On the other hand, the spectrum usage of some wireless communication systems is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00H04W72/04H04L5/00
Inventor 蒋成钢杨宇李媛媛白文岭胡金玲
Owner DATANG MOBILE COMM EQUIP CO LTD
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