Nischal B Abrol

6377556, Apr 23, 2002

Jul 14, 1999

09/353107

Marcello Lioy - San Diego CA
Nischal Abrol - San Diego CA

Qualcomm Incorporated - San Diego CA

H04B 700

370310, 370324, 370350

A method, within a wireless communication system, and a wireless MT2 device which provide for the resynchronization of a PPP link on each one of a U and R interface without affecting the other of the U and R interface. When a handoff is performed, such that the communications of the mobile MT2 device is handed off to a new BS/MSC, the U interface will undergo PPP configuration renegotiation without causing the R interface also to undergo PPP configuration renegotiation. Similarly, when the R interface undergoes PPP configuration renegotiation, the U interface will not undergo PPP configuration renegotiation.

6424639, Jul 23, 2002

Dec 22, 1999

09/470223

Marcello Lioy - San Diego CA
Nischal Abrol - San Diego CA

Qualcomm, Incorporated - San Diego CA

H04Q 724

370338, 370331, 370469, 455440

A mobile packet network call is established over a transmission link, extending between a mobile terminal device and a given interworking function. The transmission link connects the mobile terminal device to a wireless communication device over a first interface and further connects the wireless communication device to the given interworking function over a second interface via a wireless link to a base station. The transmission link further comprises a packet mode in which the traffic channel is up and a dormant mode in which the traffic channel is down while the data link layer link and the network layer link are maintained. Network region identifier information is provided to the wireless communication device. The wireless communication device determines when the given interworking function has changed from a first interworking function to a second interworking function by determining when there is a corresponding change in the network region identifier information. The wireless communication device initiates a link control protocol renegotiation with the mobile terminal device when the corresponding change in the network region identifier information has been determined.

6463034, Oct 8, 2002

Jul 14, 1999

09/353108

Nischal Abrol - San Diego CA
Marcello Lioy - San Diego CA

Qualcomm Incorporated - San Diego CA

H04B 320

370229, 370236

A method and a wireless communication device capable of flow controlling data to be sent from a TE2 device over a R interface when PPP renegotiation occurs over a U interface. Flow control is asserted by the MT2 device by means of manipulating electrical signaling of a physical interface between the MT2 device and the TE2 device. A second embodiment provides a method and a wireless communication device for buffering data on the MT2 device when the PPP renegotiation of the U interface occurs. In a third embodiment, data is buffered when the PPP renegotiation of the U interface occurs. When an amount of free buffer space is less that a predetermined threshold, flow control is asserted to the TE2 device.

6483822, Nov 19, 2002

Jun 7, 1999

09/327102

Marcello Lioy - San Diego CA, 92122
Nischal Abrol - San Diego CA, 92126

H04Q 700

370329, 455450

A method or system establishes a packet network call over a transmission link extending between a mobile terminal device and an interworking function which comprises a gateway or bridge connection to a network, such as a packet network. The transmission link connects the mobile terminal device to a wireless communication device over a first interface and further connects the wireless communication device to the interworking function over a second interface via a wireless link to a base station. The packet network call, once established, comprises a first interface data link formed within a predetermined data link layer across the first interface and a second interface data link formed within the predetermined data link layer across the second interface. A flow control is asserted and deasserted on the mobile terminal device. During the flow control, the wireless communication device performs a link control protocol negotiation with the interworking function to establish the second interface data link with the interworking function.

6507582, Jan 14, 2003

May 27, 1999

09/321296

Nischal Abrol - San Diego CA

Qualcomm Incorporated - San Diego CA

H04L 1228

370394, 370252, 370335, 370342

An improved method and system for transmitting a stream of data bytes through a channel whose capacity may change during transmission. By utilization of selective regions of sequence number space, the enhanced radio link protocol (RLP) provides the benefits of large byte sequence numbers while transmitting a fraction of the sequence number bits in the majority of over-the-air frames. Frame header sequence numbers are shortened by dividing the byte sequence number by a page size, and by performing a modulo function on the byte sequence number.

6542734, Apr 1, 2003

Mar 30, 2000

09/539498

Nischal Abrol - San Diego CA
Harold Gilkey - San Diego CA

Qualcomm Incorporated - San Diego CA

H04M 342

455414, 455412, 455580, 370363, 370449, 379229, 37922001

The present invention discloses a method and apparatus for detecting a specified event in a wireless communication system. The present invention includes an application program interface (API) that facilitates communications between a mobile station communication protocol stack, which communicates with a communication network, and a mobile station application. The mobile station communication protocol stack polls a memory when the mobile station application registers a specified event. Based on the polling, the mobile station communication protocol stack then detects the specified event. In another implementation of the present invention, the mobile station communication protocol stack detects the specified event by an interrupt notice, which is triggered when the specified event occurs.

6608818, Aug 19, 2003

Nov 10, 1999

09/437417

Nischal Abrol - San Diego CA

Qualcomm Incorporated - San Diego CA

H04J 1300

370252, 370320, 370441, 370466

An improved method and system for determining round-trip time (RTT) during a radio link protocol (RLP) wireless communication link. The RTT estimate is negotiated by both sides of the RLP communication link without the need for the 3-way handshake generally required for RLP synchronization. The method includes techniques used by both sides of the RLP communication link to dynamically update and refine their initial, negotiated RTT estimates.

6618375, Sep 9, 2003

Sep 13, 1999

09/394974

Ramin Rezaiifar - San Diego CA
Nischal Abrol - San Diego CA
Nikolai Leung - San Diego CA
Stein S. Lundby - San Diego CA

Qualcomm, Incorporated - San Diego CA

H04L 1256

370394, 370470

The present invention is a novel and improved method and system that prevents RLP3E from generating unnecessary NAKs, thus preventing unnecessary data frame retransmissions. The present invention is efficient, neither delaying the delivery of data frames to the higher data services layer nor delaying the delivery of necessary NAKs to the multiplex sublayer. Additionally, the present invention can be implemented with minimal changes to an existing RLP3E implementation. The present invention is applicable to systems such as cdma2000, W-CDMA, and EDGE, wherein data is transferred using an ARQ (automatic request for retransmission) mechanism, and wherein data packets are sometimes received in an order different from that in which they were transmitted.