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Title:
自動周波数割当を伴う媒体アクセス制御プロトコル
Document Type and Number:
Japanese Patent JP3720265
Kind Code:
B2
Abstract:
A medium access control (MAC) protocol for use in a wireless network, that efficiently supports automatic and timely frequency assignment. The MAC protocol accomplishes this by providing periodic "quiet intervals". During these intervals, all transmissions in a corresponding broadcast region are halted, thereby enabling the base station controlling the broadcast region to measure interference over a number of potential frequency carriers. The interference measurements can then be used by an automatic frequency assignment algorithm to reassign frequencies, if necessary, to the various base stations which make up the wireless network. When a base station is reassigned a new frequency, the MAC protocol also provides a period during which the base station can tune to a newly assigned frequency, and thereafter, a period during which the wireless terminals associated with the base station synchronize themselves to the base station and the generation of MAC frames over the newly assigned frequency.

Inventors:
Malmugren, Guerlain
Kroneste, Frederick
Nilsson, Renato
Application Number:
JP2000576586A
Publication Date:
November 24, 2005
Filing Date:
October 01, 1999
Export Citation:
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Assignee:
Telephone Activola Get Elm Ericsson (Pubble)
International Classes:
H04B7/24; H04L12/28; H04W16/14; H04W52/02; H04W74/04; (IPC1-7): H04L12/28; H04B7/24; H04Q7/38
Domestic Patent References:
JP4230132A
JP7222231A
JP8237729A
Attorney, Agent or Firm:
Yoshitaka Sonoda
Kobayashi Yoshinori