System and method utilizing a cognitive transceiver for ad hoc networking

a cognitive transceiver and networking technology, applied in the field of utilizing frequency spectrum for ad hoc networking, can solve problems such as adversely affecting the associated servi

Inactive Publication Date: 2006-04-20
NOKIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] With another aspect of the invention, wireless stations may allocate one of the idle channels as an establishment channel. When a wireless station desire...

Problems solved by technology

In other words, if frequency spectrum is allocated to a communication service, other communication services are not allowed to utilize the frequency spectrum even if the allocated communication service is not currently using the freq...

Method used

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  • System and method utilizing a cognitive transceiver for ad hoc networking
  • System and method utilizing a cognitive transceiver for ad hoc networking
  • System and method utilizing a cognitive transceiver for ad hoc networking

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Embodiment Construction

[0034] In the following description of the various embodiments, reference is made to the accompanying drawings which form a part hereof, and in which is shown by way of illustration various embodiments in which the invention may be practiced. It is to be understood that other embodiments may be utilized and structural and functional modifications may be made without departing from the scope of the present invention.

[0035]FIG. 1 shows an architecture of a Digital Video Broadcast (DVB-H) system 100 in accordance with an embodiment of the invention. DVB-H service provides mobile media services to wireless stations, e.g., handheld wireless units 101 and 103 in region 151. In the embodiment, DVB-H system 100 is compatible with DVB-T (digital video broadcast for terrestrial operation) and supports enhancements to better support operation of wireless handheld terminals. In the embodiment, transmitter 105 broadcasts multimedia services to wireless stations that are located in region 103.

[...

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Abstract

The present invention provides methods and apparatuses for utilizing unused portions of an allocated frequency spectrum in a wireless communications system that broadcasts content to wireless stations. A first wireless station may communicate with a second wireless station on an idle broadcast channel while keeping the resulting interference level below an acceptable maximum limit at the other wireless stations. Using interference level information that are measured at the wireless stations, the wireless station can negotiate with the other wireless station on an establishment channel for subsequent communications on one or more broadcast channels. The wireless station may receive broadcast content on a time slice that corresponds to a broadcast channel and that is further processed by the wireless station. Otherwise, the wireless station can utilize the corresponding time to measure an interference level for the corresponding channel or to transmit or receive data to/from another wireless station.

Description

FIELD OF THE INVENTION [0001] This invention relates to utilizing frequency spectrum for ad hoc networking when frequency spectrum is not being utilized for broadcast services. BACKGROUND OF THE INVENTION [0002] Radio frequency (RF) spectrum is a valuable resource, in which different communication services vie for the frequency spectrum. Typically, frequency spectrum is not shared by different communication services. In other words, if frequency spectrum is allocated to a communication service, other communication services are not allowed to utilize the frequency spectrum even if the allocated communication service is not currently using the frequency spectrum. [0003] There are a plethora of wideband services that are gaining popularity and consequently are demanding greater usage of radio frequency spectrum. For example, video streaming, data streaming, and broadband digital broadcast programming are increasing in popularity in wireless network applications, e.g., Internet protocol...

Claims

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Application Information

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IPC IPC(8): H04Q7/20H04W4/06H04W16/14H04W72/02H04W84/18H04W88/02
CPCH04W16/14H04W72/005H04W72/02H04W84/18H04W88/021H04W72/30H04W4/06
Inventor KOSSI, JOUNIKAHOLA, MIKA
Owner NOKIA CORP
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