Suraj K Jaiswal

US Patent:

20130058308, Mar 7, 2013

Filed:

Sep 7, 2011

Appl. No.:

13/227182

Inventors:

Suraj Jaiswal - Santa Clara CA, US
Renhua Wen - San Ramon CA, US

International Classification:

H04W 36/00

US Classification:

370331

Abstract:

Empty GRE packets are used to ensure in-order delivery of data packets for a session to a UE during intra-EUTRAN handover involving SGW relocation. In particular, a PGW sends an empty GRE packet per PDN session of the UE to a source SGW upon handover execution to indicate the end of pre-handover data packets delivered to the source SGW. Upon receipt of the empty GRE packet, the source SGW generates an end marker packet, and sends it to the source eNodeB. The source eNodeB forwards buffered, pre-handover data packets not delivered to the UE, followed by the end marker packet, to the target eNodeB, either directly (X2 interface) or indirectly (GTP-U tunnel between source and target SGWs). The target eNodeB then sends the pre-handover data packets, and post-handover data packets delivered to it by the PGW, to the UE in order, in reliance on the end marker packet.

US Patent:

20130148498, Jun 13, 2013

Filed:

Jun 29, 2012

Appl. No.:

13/538592

Inventors:

Brian KEAN - Cincinnati OH, US
Suraj JAISWAL - Santa Clara CA, US

International Classification:

H04L 12/56

US Classification:

370230

Abstract:

A set of forwarding elements act as a gateway to a data network for a subscriber end station. A controller network element includes a control plane operable to communicate with the forwarding elements, which are operable to communicate with the subscriber end station. The controller network element includes a quota management module, which determines a quota amount to be assigned to the forwarding elements for a traffic flow. The quota management module assigns portions of the quota amount to the forwarding elements. The quota management module determines to change the distribution of an unconsumed quota amount amongst the forwarding elements for the traffic flow, determine the unconsumed quota amount, and determine and assign portions of the unconsumed quota amount to the forwarding elements.

US Patent:

20130148668, Jun 13, 2013

Filed:

Dec 9, 2011

Appl. No.:

13/316281

Inventors:

BRIAN KEAN - CINCINNATI OH, US
SURAJ JAISWAL - SANTA CLARA CA, US
SWAPNA YELAMANCHI - FREMONT CA, US

International Classification:

H04L 12/56

US Classification:

370401

Abstract:

A network element acts as a gateway to a data network for a subscriber end station. The network element includes control plane operable to communicate with a first network processing unit (NPU) and a second NPU, which are operable to communicate with the subscriber end station. The control plane includes a quota management module, which determines a quota amount to be assigned to the first NPU and the second NPU. The quota management module assigns a portion of the quota amount to the first NPU and another portion of the quota amount to the second NPU. The quota management module may determine to change the distribution of an unconsumed quota amount between the first NPU and the second NPU, determine the unconsumed quota amount, and assign a portion of the unconsumed quota amount to the first NPU and another portion of the unconsumed quota amount to the second NPU.

US Patent:

20130308526, Nov 21, 2013

Filed:

May 16, 2012

Appl. No.:

13/473543

Inventors:

SURAJ JAISWAL - SANTA CLARA CA, US
RENHUA WEN - SAN RAMON CA, US

International Classification:

H04W 8/02

US Classification:

370328

Abstract:

A network element that acts as a local mobility anchor (LMA) in a communications network efficiently distributes signaling messages using a data plane and a control plane having a plurality of processes executing on a plurality of processing units. When a network connection ID of a received signaling message is not mapped to a host process in a steering table, the signaling message is sent to a process in the control plane. A second process is assigned to be the host process for the network connection, and the steering table is updated to indicate this assignment. Upon receipt of a second signaling message with the network connection ID, it is efficiently sent to the second process because of the updated steering table. A mobility access gateway (MAG) also utilizes a steering table with network connection ID to host process mappings to efficiently distribute signaling messages.

US Patent:

20140016545, Jan 16, 2014

Filed:

Jul 13, 2012

Appl. No.:

13/549292

Inventors:

Suraj Jaiswal - Santa Clara CA, US
Suchit Bansal - Milpitas CA, US

International Classification:

H04W 4/00
H04L 12/56

US Classification:

370328

Abstract:

A method of an aspect is performed in an Internet Protocol (IP) packet fragment reassembly system of a cellular network. The method is one of reassembling IP packet fragments that are destined for wireless devices. The method includes a step of receiving a plurality of encapsulated IP packet fragments. Each of the encapsulated IP packet fragments have an encapsulation header, an outer IP header, and an inner IP header. The method also includes a step of determining that the encapsulation headers indicate that the IP packet fragments are encapsulated. The method further includes a step of reassembling the IP packet fragments into a reassembled IP packet. A more fragments (MF) bit is set in the inner IP header of each, except for a last one, of the IP packet fragments.

US Patent:

20120294277, Nov 22, 2012

Filed:

May 19, 2011

Appl. No.:

13/111141

Inventors:

Suraj Jaiswal - Milpitas CA, US
Renhua Wen - San Ramon CA, US

International Classification:

H04W 36/00

US Classification:

370331

Abstract:

Empty GRE packets are used to provide in-order delivery of data packets for a session to a UE during inter-RAT handover. In particular, an empty GRE packet sent from a source gateway in a source RAN to a target gateway in a target RAN indicates to the target gateway the end of forwarded data packets from the source gateway. The target gateway sends data packets received from the source gateway to the UE until the empty GRE packet is received. Upon receipt of the empty GRE packet, the target gateway begins sending data packets received directly from a home network gateway to the UE.

US Patent:

20120294276, Nov 22, 2012

Filed:

May 19, 2011

Appl. No.:

13/111130

Inventors:

Suraj Jaiswal - Milpitas CA, US
Renhua Wen - San Ramon CA, US

International Classification:

H04W 36/00

US Classification:

370331

Abstract:

An empty GRE packet along with a sequence number provides in-order delivery of data packets for a session to a UE during inter-RAT handover. In particular, an empty GRE packet sent from a source gateway in a source RAN (Radio Access Network) to a target gateway in a target RAN includes a sequence number to indicate to the target gateway the end of forwarded data packets from the source gateway. The target gateway sends data packets received from the source gateway to the UE until the empty GRE packet with the expected sequence number is received. Upon receipt of the empty GRE packet containing the expected sequence number, the target gateway begins sending data packets received directly from a home network gateway to the UE.