Janakiraman Senthilnathan

US Patent:

6985464, Jan 10, 2006

Filed:

Jul 30, 2001

Appl. No.:

09/919334

Inventors:

Matthew Hayden Harper - Salem NH, US
Janakiraman Senthilnathan - Chelmsford MA, US

Assignee:

Starent Networks Corporation - Tewksbury MA

International Classification:

H04Q 7/00
H04Q 7/20
H04L 12/28

US Classification:

370331, 370400, 455436

Abstract:

Data interconnections are managed in a mobile communications network having multiple packet control function entities (PCFs) and multiple packet data serving nodes (PDSNs), wherein each PCF and PDSN communicates signaling messages according to a mobile signaling protocol. Information for a Mobile Subscriber (MS) is received. The MS is associated with a same one of the PDSNs when the MS moves from a first area covered by a first PCF to a second area covered by a second PCF. It is determined that a first PCF has issued a first connection request on behalf of an MS. As a result of the first connection request, a selection protocol is executed a first time to select a PDSN that corresponds to the MS. It is determined that a second PCF has issued a second connection request on behalf of the MS. The selection protocol is executed a second time to select the same PDSN that was selected as a result of the first connection request.

US Patent:

7492770, Feb 17, 2009

Filed:

Aug 31, 2005

Appl. No.:

11/218095

Inventors:

Janakiraman Senthilnathan - Nashua NH, US
Matthew H. Harper - Lane Salem NH, US

Assignee:

Starent Networks, Corp. - Tewksbury MA

International Classification:

H04Q 7/38

US Classification:

370394, 455442

Abstract:

Techniques for providing an uninterrupted data stream to a mobile node are disclosed. In a first technique, a time stamp is inserted at some point in the wireless network and the time stamp is used along with a tolerance value to determine when to transmit a packet in a data stream. By transmitting the packets at the same adjusted time, transmission to mobile nodes is synchronized. A second technique uses duplication of data stream content to avoid an interruption in the data stream at a mobile node. A third technique uses an error correcting code to avoid interruption of the data stream at a mobile node. A fourth technique uses a sequence number inserted into packets in the data stream at the content server to synchronize transmission to mobile nodes.

US Patent:

8031671, Oct 4, 2011

Filed:

Jul 19, 2004

Appl. No.:

10/893846

Inventors:

Matthew H. Harper - Salem NH, US
Janakiraman Senthilnathan - Nashua NH, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04W 4/00

US Classification:

370331, 370335, 370338, 370342, 370349, 370354, 370395, 370401, 455406, 455408, 455410, 455436, 455437, 455439, 455511, 709220, 713171

Abstract:

Methods and systems are provided for using a PDSN in a wireless communication network that includes multiple IP addresses and multiple corresponding physical interfaces. Through the use of multiple IP addresses and interfaces, the throughput of the PDSN may be substantially increased. Additionally, the multiple IP addresses and interfaces may be used to provide redundancy in order to protect against software or hardware failures. According to the methods and systems of the invention, moreover, the risk of internal hard handoffs resulting from the use of a PDSN having multiple IP addresses and interfaces is eliminated or at least substantially reduced.

US Patent:

8194698, Jun 5, 2012

Filed:

Aug 7, 2006

Appl. No.:

11/500552

Inventors:

Janakiraman Senthilnathan - Nashua NH, US
Kuntal Chowdhury - Plano TX, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04J 3/00

US Classification:

370464

Abstract:

Methods and systems are provided for updating the quality of service (QoS) of an IP flow in a wireless communications system. More particularly, the methods and systems provide the ability to update a QoS grant from any level of QoS to any other level of QoS, from no QoS to some level of QoS, and from some level of QoS to no level of QoS. The update of QoS can be based, at least in part, on a request being made for an updated QoS. A decision is made whether or not to update the QoS; and depending on the decision, the QoS can be updated.

US Patent:

8223807, Jul 17, 2012

Filed:

Feb 17, 2009

Appl. No.:

12/372433

Inventors:

Janakiraman Senthilnathan - Nashua NH, US
Matthew H. Harper - Salem NH, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04W 56/00

US Classification:

370509, 370519

Abstract:

Techniques for providing an uninterrupted data stream to a mobile node are disclosed. In a first technique, a time stamp is inserted at some point in the wireless network and the time stamp is used along with a tolerance value to determine when to transmit a packet in a data stream. By transmitting the packets at the same adjusted time, transmission to mobile nodes is synchronized. A second technique uses duplication of data stream content to avoid an interruption in the data stream at a mobile node. A third technique uses an error correcting code to avoid interruption of the data stream at a mobile node. A fourth technique uses a sequence number inserted into packets in the data stream at the content server to synchronize transmission to mobile nodes.

US Patent:

8249025, Aug 21, 2012

Filed:

Oct 3, 2011

Appl. No.:

13/251792

Inventors:

Matthew H. Harper - Salem NH, US
Janakiraman Senthilnathan - Nashua NH, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04W 4/00

US Classification:

370331, 370335, 370338, 370342, 370349, 370354, 370395, 370401, 455406, 455408, 455410, 455436, 455437, 455439, 455511, 709220, 713171

Abstract:

Methods and systems are provided for using a PDSN in a wireless communication network that includes multiple IP addresses and multiple corresponding physical interfaces. Through the use of multiple IP addresses and interfaces, the throughput of the PDSN may be substantially increased. Additionally, the multiple IP addresses and interfaces may be used to provide redundancy in order to protect against software or hardware failures. According to the methods and systems of the invention, moreover, the risk of internal hard handoffs resulting from the use of a PDSN having multiple IP addresses and interfaces is eliminated or at least substantially reduced.

US Patent:

8370204, Feb 5, 2013

Filed:

Apr 8, 2010

Appl. No.:

12/756530

Inventors:

Sandeep Gautam - Pune, IN
Janakiraman Senthilnathan - Nashua NH, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06Q 30/00

US Classification:

705 1473, 705 144, 705 1449, 705 1455

Abstract:

In some embodiments, methods for providing advertisements from a communication gateway are providing, including: receiving a first request requesting content from a content server; analyzing the first request, including performing deep packet inspection; based on updatable profile information associated with a mobile node and on the analysis including the deep packet inspection, selecting an advertising category; based on the selected advertising category, retrieving an advertisement among a plurality of advertisements and sending the advertisement to the mobile node; updating the profile information to indicate the advertisement has been sent to the mobile node in response to the first request for content; receiving a second request for the content from the mobile node; retrieving the content; and in response to the second request and based on the profile information indicating the advertisement has been sent to the mobile node, sending the content to the mobile node.

US Patent:

20050204043, Sep 15, 2005

Filed:

Mar 10, 2004

Appl. No.:

10/797646

Inventors:

Mathew Harper - Salem NH, US
Janakiraman Senthilnathan - Chelmsford MA, US

International Classification:

G06F015/16

US Classification:

709227000

Abstract:

Systems and methods for establishing and operating data sessions between mobile subscriber units and packet data servers on a wireless communication network are presented. Some aspects described herein are directed to preventing the loss of an initial configuration request signal (e.g. under the LCP protocol) from a packet data server to a mobile subscriber prior to successful establishment of a radio air link to the mobile subscriber. Other aspects are directed to detecting the presence or absence of a radio air link to the mobile subscriber as a determinant of whether the packet data server is to send a configuration request signal to the mobile subscriber, or whether the packet data server should withhold the request signal until the air link is established. Some or all aspects presented are suitable for use in 3G or CDMA-2000 systems using the A10/A11 communication control protocol and the PPP data communication protocol.