The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2002
Filed:
Feb. 13, 1998
Kenichi Ishii, Tokyo, JP;
Tomoki Osawa, Tokyo, JP;
NEC Corporation, , JP;
Abstract
In a wireless local area network, each subnetwork is formed by a base host and several mobile hosts. The base host broadcasts a control packet at periodic intervals and the mobile hosts monitor the broadcast packet and interfering signals from other subnetworks. If any of the mobile hosts does not receive the control packet for a predetermined period or detects the interfering signal, it makes a search and selects a new channel. The parent host also monitors interfering signals from other subnetworks. If it detects an interfering signal, it selects a noiseless new channel. The channel number of the new channel may be broadcast using a channel assignment signal to allow the mobile hosts to select the new channel. Alternatively, no channel assignment signal is broadcast. In this case, it is up to the mobile hosts to select the new channel.