Abstract

A method of reducing tunneling in a wireless packet network. The method includes defining a home access point for a client station, determining that the client station is being serviced by an access point different from the home access point, deciding if the client station should change its home access point to the access point from which the client station receives service and initiating a change of the home access point of the client station, if so decided.

IPC Classes  ?

• H04W 8/26 - Network addressing or numbering for mobility support
• H04W 8/02 - Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks

Abstract

A MIXER FOR USE IN A MICROWAVE SYSTEM ABSTRACT OF THE DISCLOSURE The present invention relates to a mixer for use at high microwave frequencies (typically 21.8 x 23.2 GHz) in a low cost communication application. The invention utilizes low cost microwave components, including a low cost compartmented waveguide, shared by the signal and local oscillator and extensive microstrip circuitry. The provision of a pair of novel 1/4 wave impedance provides efficient antenna and local oscillator input filtering, and efficient coupling from the waveguide sections to the microstrip circuitry. The mixer oper- ation is carried out in the microstrip circuitry, which contains a hybrid coupler, a balanced diode detector, and the required mixer output filter. The arrangement is of low cost, and provides a low noise figure (7 db including the preamplifier), a good band selectivity (15 db return loss over the communications band), and low local oscillator radiation.

IPC Classes  ?

• H04B 1/26 - Circuits for superheterodyne receivers