Appeal No. 2006-1697
Application No. 10/400,998
is greater than a quality threshold. Requiring nodes to have sufficient quality
values for the omni-directional link before establishing the directional link
provides a good indication that the directional link will also be of a desired quality.
Representative claim 1 is reproduced as follows:
1. A wireless communication network comprising:
a plurality of mobile nodes each comprising at least one wireless
transceiver, a directional antenna and an omni-directional antenna connected to
said at least one wireless transceiver, and a controller for controlling said at least
one wireless transceiver, said controller also for
establishing an omni-directional communication link with another mobile
node,
determining a link quality value for the omni-directional communication
link, and
establishing a directional communication link with said other mobile node if
the link quality value for the omni-directional communication link is greater than a
quality threshold.
The examiner relies on the following references:
Seiki 2002/0119808 Aug. 29, 2002
Mortensen 1 067 730 Jan. 10, 2001
(European Application)
Pritchett 5,767,807 Jun. 16, 1998
Ko et al. (Ko), Medium Access Control Protocols Using Directional Antennas in
Ad Hoc Networks, IEEE Infocom, p. 13-21, 2000.
Lott et al. (Lott), Medium Access and Radio Resource Management for Ad Hoc
Networks Based on UTRA TDD, ACM, Proc. of the 2d ACM Int’l Sym. on Mobile
Ad Hoc Networking Computing, MobiHOC 2001, p. 76-86, 2001.
The following rejections are on appeal before us:
1. Claims 1, 2, 10, 17, and 18 stand rejected under 35 U.S.C. § 103(a) as
being unpatentable over Ko in view of Seiki.
2
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