US Patent No: 6,845,105

Number of patents in Portfolio can not be more than 2000

Method and apparatus for maintaining sequence numbering in header compressed packets

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Abstract

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A method and apparatus for maintaining a plurality of sequence numbers in a plurality of header compressed packets associated with an information context is described. Header compressed packets are transferred on a communication link according to a multi-layer protocol having at least a higher layer and a lower layer. If it is determined that one or more header compressed packets has been dropped, a flag is set on the header compressed packets. A sequence count at the higher layer and lower layer may be reduced by a number corresponding to the number of header compressed packets dropped. The sequence number of each of the header compressed packets is checked at the lower layer against the sequence count and renumbered to match the sequence count. If the sequence number and the sequence count match the flag is cleared. The higher layer is a PPP layer and the lower layer is a Physical Layer.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
UNWIRED PLANET, LLCRENO, NV974

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Olsson, Gunnar Lund, SE 11 117
Rahlen, Simon Tullinge, SE 2 54

Cited Art Landscape

Patent Info (Count) # Cites Year
 
LUCENT TECHNOLOGIES INC. (3)
6,414,950 Sequence delivery of messages 79 1998
6,512,754 Point-to-point protocol encapsulation in ethernet frame 157 1998
6,539,004 Time synchronization of packetized radio signals to base stations 15 1998
 
CISCO TECHNOLOGY, INC. (1)
6,006,268 Method and apparatus for reducing overhead on a proxied connection 45 1997
 
CORE WIRELESS LICENSING S.A.R.L (1)
6,300,887 Efficient handoff procedure for header compression 61 2000
 
KINGSTON TECHNOLOGY CORPORATION (1)
5,850,526 LAN station for determining the destination LAN station is capable of decompressing by comparing destination address to block of addresses assigned by a LAN manufacturer 60 1996
 
MOTOROLA MOBILITY LLC (1)
6,198,735 Method for retransmitting a data packet in a packet network 29 1999
 
NOKIA NETWORKS OY (1)
6,608,841 System and method for achieving robust IP/UDP/RTP header compression in the presence of unreliable networks 90 1999

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Sprint Communications Company L.P. (2)
7,301,901 Method and system for communicating voice over a low-speed communications link 0 2002
8,554,860 Traffic segmentation 0 2003
 
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (2)
7,212,511 Systems and methods for VoIP wireless terminals 9 2002
8,259,732 Medium access control priority-based scheduling for data units in a data flow 0 2004
 
BLITZ STREAM VIDEO, LLC (1)
8,514,718 Layered multicast and fair bandwidth allocation and packet prioritization 0 2009
 
CISCO TECHNOLOGY, INC. (1)
7,627,870 Method and apparatus for a data structure comprising a hierarchy of queues or linked list data structures 25 2001
 
ERICSSON AB (1)
7,792,534 Multiple threshold scheduler 1 2002
 
FUTUREWEI TECHNOLOGIES, INC. (1)
8,576,709 System and method for monitoring dropped packets 0 2011
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
8,427,951 Method, system, and apparatus for reliable data packet recovery in a link layer of a data center ethernet network 0 2007
 
Internet Broadcasting Corporation (1)
7,733,868 Layered multicast and fair bandwidth allocation and packet prioritization 17 2006
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
7,328,283 Header compression/decompression apparatus and header compression/decompression method 6 2003
 
QUALCOMM INCORPORATED (1)
7,907,600 System and method for optimizing robust header compression (ROHC) in high delay variance environment 0 2006
 
ROCKWELL ELECTRONIC COMMERCE CORP. (1)
7,599,350 Packet prioritizing voice over packet network phone and system 2 2001
 
SAMSUNG ELECTRONICS CO., LTD. (1)
7,391,736 Method and apparatus for transmitting packet data having compressed header 11 2003
 
TEXAS INSTRUMENTS INCORPORATED (1)
6,967,920 Smart interface for payload transfers in networking applications 1 2001
 
UNWIRED PLANET, LLC (1)
7,586,882 Higher layer packet framing using RLP 4 2005
 
VOLLI POLYMER GMBH LLC (1)
8,543,681 Network topology discovery systems and methods 1 2002

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 18, 2016
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00