236 search results - page 15 / 48 » Model of primary and secondary context |
ICC
2009
IEEE
14 years 2 months ago
2009
IEEE
— Spectrum handoff occurs when the primary users appear in the licensed band occupied by the secondary users. Spectrum handoff procedures aim to help the secondary users to vacat...
WSC
1997
13 years 8 months ago
1997
This paper describes a simulator for a large outdoor operation called a signal quality survey. Design and implementation of the simulator follows an object oriented approach with ...
VLDB
1999
ACM
13 years 11 months ago
1999
ACM
In a temporal OODB, an OID index (OIDX) is needed to map from OID to the physical location of the object. In a transaction time temporal OODB, the OIDX should also index the objec...
WIOPT
2010
IEEE
13 years 5 months ago
2010
IEEE
—Cognitive radio networks provide the capability to share the wireless channel with licensed (primary) users in an opportunistic manner. Primary users have a license to operate i...
INFOCOM
2011
IEEE
12 years 10 months ago
2011
IEEE
Abstract—Due to the emergence of Cognitive Radio, a special type of heterogeneous networks attracts increasing interest recently, in which a secondary network composed of cogniti...