Assignee
NORTEL NETWORKS LTD
CA3,642 patents
Top patents by PatentIndex Score
US7957326B1Jun 7, 2011
Integrated home service network
NORTEL NETWORKS LTD125 citations99
US7778337B2Aug 17, 2010
Scattered pilot pattern and channel estimation method for MIMO-OFDM systems
NORTEL NETWORKS LTD72 citations99
US7769305B1Aug 3, 2010
High-speed digital signal processing in a coherent optical receiver
NORTEL NETWORKS LTD93 citations99
US7636525B1Dec 22, 2009
Signal acquisition in a coherent optical receiver
NORTEL NETWORKS LTD120 citations99
US7551546B2Jun 23, 2009
Dual-mode shared OFDM methods/transmitters, receivers and systems
NORTEL NETWORKS LTD239 citations99
US7548758B2Jun 16, 2009
System and method for peer-to-peer communication in cellular systems
NORTEL NETWORKS LTD110 citations99
US7548506B2Jun 16, 2009
System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design
NORTEL NETWORKS LTD196 citations99
US7483964B1Jan 27, 2009
System, device, and method for providing personalized services in a communication system
NORTEL NETWORKS LTD257 citations99
US7286479B2Oct 23, 2007
Routing for a communications network
NORTEL NETWORKS LTD154 citations99
US7248559B2Jul 24, 2007
Scattered pilot pattern and channel estimation method for MIMO-OFDM systems
NORTEL NETWORKS LTD202 citations99
US7233625B2Jun 19, 2007
Preamble design for multiple input—multiple output (MIMO), orthogonal frequency division multiplexing (OFDM) system
NORTEL NETWORKS LTD188 citations99
US7227937B1Jun 5, 2007
Monitoring natural interaction for presence detection
NORTEL NETWORKS LTD451 citations99
US7139797B1Nov 21, 2006
Presence information based on media activity
NORTEL NETWORKS LTD176 citations99
US7103325B1Sep 5, 2006
Adaptive modulation and coding
NORTEL NETWORKS LTD158 citations99
US7072307B2Jul 4, 2006
Hybrid ARQ schemes with soft combining in variable rate packet data applications
NORTEL NETWORKS LTD110 citations99
US7043651B2May 9, 2006
Technique for synchronizing clocks in a network
NORTEL NETWORKS LTD282 citations99
US7035923B1Apr 25, 2006
Presence information specifying communication preferences
NORTEL NETWORKS LTD352 citations99
US7020791B1Mar 28, 2006
Clock recovery using a double-exponential smoothing process
NORTEL NETWORKS LTD301 citations99
US7007098B1Feb 28, 2006
Methods of controlling video signals in a video conference
NORTEL NETWORKS LTD190 citations99
US6985434B2Jan 10, 2006
Adaptive time diversity and spatial diversity for OFDM
NORTEL NETWORKS LTD365 citations99
US6968994B1Nov 29, 2005
RF-ID for cable management and port identification
NORTEL NETWORKS LTD198 citations99
US6944131B2Sep 13, 2005
State information and routing table updates in large scale data networks
NORTEL NETWORKS LTD99 citations99
US6907020B2Jun 14, 2005
Frame structures supporting voice or streaming communications with high speed data communications in wireless access networks
NORTEL NETWORKS LTD144 citations99
US6857026B1Feb 15, 2005
Using alternate routes for fail-over in a communication network
NORTEL NETWORKS LTD348 citations99
US6850481B2Feb 1, 2005
Channels estimation for multiple input—multiple output, orthogonal frequency division multiplexing (OFDM) system
NORTEL NETWORKS LTD332 citations99
US6845389B1Jan 18, 2005
System and method for broadband multi-user communication sessions
NORTEL NETWORKS LTD253 citations99
US6845246B1Jan 18, 2005
Location based power control for mobile communications systems
NORTEL NETWORKS LTD171 citations99
US6816468B1Nov 9, 2004
Captioning for tele-conferences
NORTEL NETWORKS LTD267 citations99
US6799039B2Sep 28, 2004
Network resource sharing during handover of a mobile station between cellular wireless networks
NORTEL NETWORKS LTD194 citations99
US6788697B1Sep 7, 2004
Buffer management scheme employing dynamic thresholds
NORTEL NETWORKS LTD205 citations99
US6744775B1Jun 1, 2004
State information and routing table updates in large scale data networks
NORTEL NETWORKS LTD215 citations99
US6721569B1Apr 13, 2004
Dynamic sub-carrier assignment in OFDM systems
NORTEL NETWORKS LTD159 citations99
US6701148B1Mar 2, 2004
Method and apparatus for simultaneous radio and mobile frequency transition via “handoff to self”
NORTEL NETWORKS LTD185 citations99
US6701129B1Mar 2, 2004
Receiver based adaptive modulation scheme
NORTEL NETWORKS LTD213 citations99
US6690645B1Feb 10, 2004
Method and apparatus for active queue management based on desired queue occupancy
NORTEL NETWORKS LTD119 citations99
US6687511B2Feb 3, 2004
CDMA transmit peak power reduction
NORTEL NETWORKS LTD121 citations99
US6680934B1Jan 20, 2004
System, device and method for expediting control flow in a communication system
NORTEL NETWORKS LTD405 citations99
US6658095B1Dec 2, 2003
Customized presence information delivery
NORTEL NETWORKS LTD859 citations99
US6584084B1Jun 24, 2003
Expanded carrier capacity in a mobile communications system
NORTEL NETWORKS LTD251 citations99
US6580721B1Jun 17, 2003
Routing and rate control in a universal transfer mode network
NORTEL NETWORKS LTD163 citations99
US6542490B1Apr 1, 2003
Data link control proctocol for 3G wireless system
NORTEL NETWORKS LTD250 citations99
US6505046B1Jan 7, 2003
Method and apparatus for distributing location-based messages in a wireless communication network
NORTEL NETWORKS LTD957 citations99
US6470016B1Oct 22, 2002
Servicing output queues dynamically according to bandwidth allocation in a frame environment
NORTEL NETWORKS LTD193 citations99
US6448899B1Sep 10, 2002
Power indicating ethernet outlet and method therefor
NORTEL NETWORKS LTD218 citations99
US6389034B1May 14, 2002
System for providing stream based and packet based services
NORTEL NETWORKS LTD200 citations99
US6389005B1May 14, 2002
Automatic backup trunking for voice over the internet
NORTEL NETWORKS LTD284 citations99
US6363481B1Mar 26, 2002
Method and apparatus for secure data storage using distributed databases
NORTEL NETWORKS LTD146 citations99
US6356546B1Mar 12, 2002
Universal transfer method and network with distributed switch
NORTEL NETWORKS LTD145 citations99
US6292480B1Sep 18, 2001
Electronic communications manager
NORTEL NETWORKS LTD167 citations99
US6266529B1Jul 24, 2001
Method for CDMA handoff in the vicinity of highly sectorized cells
NORTEL NETWORKS LTD179 citations99
Showing the top 50 of 3,642 patents by PatentIndex Score.