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Method, communication system and communication unit for protecting incumbent wireless services

A technology of communication system and communication unit, which is applied in the direction of wireless communication, transmission system, radio/inductive link selection and arrangement, etc. It can solve the problem of not eliminating interference and achieve the effect of overcoming the problem of automatic detection

Active Publication Date: 2008-07-16
NXP BV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This statement does not eliminate any interference to other networks or wireless services

Method used

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  • Method, communication system and communication unit for protecting incumbent wireless services

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Embodiment Construction

[0024] Secondary services have proposed several UWB protocols. The present invention is applicable to all these protocols.

[0025] As an example embodiment, the WiMedia / MBOA MAC protocol (MBOA Draft MACStandard 0.95, April 11, 2005) is chosen.

[0026] In section 7.8 of the standard, several information elements (IEs) that may be present in a management frame are specified. In order to implement the invention, a new IE "ProtectionIE" must be added, which should be used in Beacon and Probe response frames if protection information is available.

[0027] Because WiMedia / MBOA is based on OFDM, it is preferable to specify the frequency range by the number of OFDM subcarriers rather than the absolute frequency, as shown in FIG. 1 . The frequency(f) / subcarrier(n) relationship can be defined as:

[0028] f=3168MHz+n*4.125MHz, where n=0, 1, . . . , 1792.

[0029] Subcarriers from nlower to nupper shall be null (filtered out).

[0030] For non-OFDM systems it is best to specify t...

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Abstract

The invention relates to a Method, a Communication System and an Communication Unit for protecting incumbent services whereas in the incumbent services first information is exchanged between first communication means by radio frequency transmission within a first bandwidth using a first protocol and second information is exchanged between second communication means by radio frequency transmission within a second bandwidth using a second protocol and the second bandwidth is overlapping and larger than the first bandwidth. The problem to be solved is to reduce or to eliminate an interference of secondary services to incumbent services. The problem is solved by ascertaining the presence of any first information exchange between said first communication means; transmitting a protecting information at least about the presence of a first information exchange to at least one of the second communication means; inhibiting said at least one of the second communication means to use the radio frequencies used for exchanging the first information for transmitting the second information and transmitting the second communication within a frequency range wherein the radio frequencies used for exchanging the first information for transmitting the second information are notched.

Description

technical field [0001] The invention relates to a method for protecting an active service in which first information is exchanged between first communication devices by radio frequency transmission within a first bandwidth using a first protocol and by using a first The second protocol performs radio frequency transmission within a second bandwidth to exchange second information between the second communication devices, and the second bandwidth overlaps with the first bandwidth and is larger than the first bandwidth. [0002] The invention also relates to a communication system for protecting active services, wherein an active service uses first communication means for exchanging first information by radio frequency transmission within a first bandwidth using a first protocol, and wherein said The communication system includes second communication means for exchanging second information between second communication means by radio frequency transmission using a second protocol ...

Claims

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Application Information

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IPC IPC(8): H04Q7/36H04B1/69H04W16/14H04W84/18H04W92/02
CPCH04W16/14H04W84/18H04W92/02
Inventor 贡纳尔·尼特舍
Owner NXP BV
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