Qualcomm Incorporated

Mohammed Humayun Rashid

Fahed Zawaideh

Sriram Nagesh Nookala

Anshul Jain

Athar Saleem

An access terminal acquires a multi-carrier radio network on an acquisition channel, receives a list of available channels from the network, and hashes to a channel on which the access terminal attempts to establish a session. If the access terminal fails to establish the session, the access terminal selects a new acquisition channel from an acquisition table other than the acquisition table from which the original acquisition channel was selected. The access terminal then repeats the above steps in order to attempt to establish a session, beginning with acquisition on the new acquisition channel. In this way, the number of unsuccessful session establishment attempts resulting from back end network failures is typically reduced, shortening the time to successful session establishment, reducing power consumption by the access terminal, and lessening interference due to unsuccessful attempts to establish a session.

Session establishment in multi-carrier data transmission systems

A method and/or apparatus for intelligent domain name server selection are provided. A mobile device may wirelessly receive one or more domain name server Internet Protocol (IP) addresses from a network serving agent during a call setup or a network registration. The mobile device then determines whether one or more of the received domain name server IP addresses is valid prior to attempting to contact a domain name server associated with one of the received domain name server IP addresses. A fallback sequence of valid domain name server IP addresses may be generated and provided (either individually or as a group) from a link layer to an application layer for domain name resolution. Received domain name server IP addresses that are geographically closer to a current location of the mobile device or its visited network may be given priority.

Fallback procedures for domain name server update in a mobile IP registration

Disclosed are systems, methods and computer program products for measuring and reducing latency of radio link flows having different quality of service (QoS) reservations. An example method comprises establishing one or more radio link flows with an access gateway, wherein each radio link flow has a different QoS reservation, transmitting at least one transport layer protocol message having a predetermined size on each radio link flow to the echo service of the access gateway, receiving at least one response message on each radio link flow from the access gateway, computing the round trip time (RTT) for the transmitted and received messages on each radio link flow, and modifying QoS reservations of the one or more radio link flows based on the computed RTT for the one or more radio link flows.

Growing community of inventors

San Diego, CA, United States of America

Mohammed Humayun Rashid