US2004208147A1

5G,4G,3G,2G

Title

Fast acquisition of traffic channels for a highly variable data rate reverse link of a CDMA wireless communication system

Application Number:

US20040761130

Publication Date:

21-10-2004

Current Assignee:

Family ID:

Application Date:

20-01-2004

Publication Country:

US

Priority Date:

17-12-1997

Title

Fast acquisition of traffic channels for a highly variable data rate reverse link of a CDMA wireless communication system

Application Number:

US20040761130

Family ID:

Publication Country:

US

Publication Date:

21-10-2004

Application Date:

20-01-2004

Priority Date:

17-12-1997

Current Assignee:

Abstract  Abstract

A method for monitoring idling mode connections between a base station and idling subscriber units that are powered on but not actively sending data is provided. The method includes making available a plurality of orthogonal subchannels within at least one Code Division Multiple Access (CDMA) radio frequency (RF) channel. A shared orthogonal subchannel is assigned to at least two different idling subscriber units but utilizing different time slots of the shared orthogonal subchannels. For each idling subscriber unit assigned the shared orthogonal subchannel a respective heartbeat signal is sent within its assigned time slot at a data rate that is low enough to maintain bit synchronization with the base station. The respective heartbeat signals are tracked within the assigned time slots by selecting an assigned time slot within the shared orthogonal subchannel retrieving a previous tracking of a respective heartbeat signal for an idling subscriber unit associated with the assigned time slot determining a current tracking of the respective heartbeat signal for the idling subscriber unit associated with the assigned time slot and updating the tracking of the idling subscriber unit associated with the assigned time slot based upon its current and previous trackings.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.