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Showing 1 to 20 of 173 results

Patent /App. No. Country Patent Title Patent Owner Issue/Pub Date Status
RE42345 US Packet radio network with charging information collected by nodes and forwarded to billing center May 10, 2011 In Force
6,799,021 US Method and arrangement for forming an address Sep 28, 2004 In Force
6,745,029 US Method and arrangement for handling network specific subscriber data during roaming by use of SIM card information storage Jun 1, 2004 In Force
6,741,849 US Handling of forwarded calls May 25, 2004 In Force
6,738,365 US Method of improving connection quality and system capacity, and a cellular radio system May 18, 2004 In Force
6,631,125 US Channel set-up in wideband, code division multiple access systems Oct 7, 2003 In Force
6,628,950 US Restriction of incoming calls in a mobil telecommunication system Sep 30, 2003 In Force
6,611,547 US Method of avoiding packet loss at a handover in a packet-based telecommunications network and handover method Aug 26, 2003 In Force
6,597,682 US Channel allocation method for a packet network Jul 22, 2003 In Force
6,594,250 US Method of monitoring base stations with discontinuous control channel transmissions Jul 15, 2003 In Force
6,574,336 US Echo suppressor and non-linear processor of echo canceller Jun 3, 2003 In Force
6,570,851 US Receiver driven differentiated service marking for unicast and multicast applications May 27, 2003 In Force
6,556,820 US Mobility management for terminals with multiple subscriptions Apr 29, 2003 In Force
6,549,753 US Signalling method in a digital radio system wherein signaling data is placed in the signal based on control information Apr 15, 2003 In Force
6,542,501 US Speech transmission in a mobile communication network Apr 1, 2003 In Force
6,538,992 US Adaptive scheduling method and apparatus to service multilevel QoS in AAL2 Mar 25, 2003 In Force
6,490,275 US Method and apparatus for improving call setup efficiency in multimedia communications systems Dec 3, 2002 In Force
6,480,485 US Packet radio network with charging information collected by nodes and forwarded to billing center Nov 12, 2002 In Force
6,430,399 US Multipath transmission for optimizing receiver reception Aug 6, 2002 In Force
6,427,073 US Preventing misuse of a copied subscriber identity in a mobile communication system Jul 30, 2002 In Force

Showing 1 to 20 of 173 results

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