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Method for controlling interference from white space units

A technology of blank space and space, applied in the field of aggregation interference, to achieve the effect of good speed and accuracy, and effective use of blank space

Inactive Publication Date: 2014-04-30
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] It is therefore an aim to address some of the problems and drawbacks outlined above and to determine WSD output power limits without necessarily assuming worst case scenarios and fixed margins to account for interference from multiple WSDs, since this One solution results in sub-optimal output power limit allocation for WSD

Method used

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  • Method for controlling interference from white space units
  • Method for controlling interference from white space units
  • Method for controlling interference from white space units

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Embodiment Construction

[0023] Hereinafter, different aspects will be described in more detail with reference to certain embodiments and drawings. For purposes of illustration and not limitation, specific details are set forth, such as specific scenarios and techniques, in order to provide a thorough understanding of the various embodiments. However, other embodiments may exist that do not depart from these specific details.

[0024] Additionally, those skilled in the art will appreciate that although embodiments are described primarily in terms of methods and apparatus, they can also be embodied in a computer program product and in a system comprising a computer processor and memory coupled to the processor, where The memory is encoded with one or more programs that can perform the steps of the methods disclosed herein.

[0025] The present disclosure describes a method and a device for calculating and limiting, ie for controlling, the level of aggregate disturbance caused for a point, line, area o...

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Abstract

The present invention relates to a method of a node such as a geo-location database, for controlling an aggregated interference generated by at least two white space units in at least one point in space for at least one frequency channel. A model of propagation channels from each of the at least two white space units to each of the at least one point comprises a variable with a lognormal distribution. The method comprises receiving (810) requests for usage of white space frequency channels from the at least two white space units, the requests comprising positions of the at least two white space units. The method also comprises determining (820) output power limits for the at least two white space units by maximizing a utility function while fulfilling a probabilistic constraint on the amount of aggregated interference generated in each of the at least one point, based on the received requests and on said model of propagation channels. A sum of lognormal variables in the probabilistic constraint is approximated by a single lognormal variable. The method further comprises transmitting (830) the determined output power limits to the respective at least two white space units.

Description

technical field [0001] This disclosure relates to the field of determining output power constraints for white space devices. More specifically, the present disclosure relates to a node and a method in the node for controlling aggregated interference generated by at least two white space elements in at least one point in space for at least one frequency channel method. Background technique [0002] Spectrum scarcity is a problem that has been observed for some time in regulatory frequency allocation charts. All potentially interesting spectrum bands for mobile communications have been allocated to services. However, additional spectrum for mobile broadband is required to cope with the exponential rise in mobile broadband traffic. At the same time, traditional approaches to spectrum regulation are sometimes considered too slow to adapt to sometimes rapidly changing economic and technological requirements, which means that large parts of the electromagnetic spectrum are lice...

Claims

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Application Information

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IPC IPC(8): H04W16/14H04W72/08
CPCH04W52/367H04W52/225H04B17/009H04W16/14H04B17/391H04B15/00
Inventor Y·塞伦J·克罗南德
Owner TELEFON AB LM ERICSSON (PUBL)
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