US6678260B2

5G,4G,3G,2G

Title

System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system

Application Number:

US20010997621

Publication Date:

13-01-2004

Current Assignee:

Family ID:

Application Date:

29-11-2001

Publication Country:

US

Priority Date:

17-12-1997

Title

System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system

Application Number:

US20010997621

Family ID:

Publication Country:

US

Publication Date:

13-01-2004

Application Date:

29-11-2001

Priority Date:

17-12-1997

Current Assignee:

Abstract  Abstract

A service option overlay for a CDMA wireless communication in which multiple allocatable subchannels are defined on a reverse link by assigning different code phases of a given long pseudonoise (PN) code to each subchannel. The instantaneous bandwidth needs of each on-line subscriber unit are then met by dynamically allocating none one or multiple subchannels on an as needed basis for each network layer connection. The system efficiently provides a relatively large number of virtual physical connections between the subscriber units and the base stations on the reverse link for extended idle periods such as when computers connected to the subscriber units are powered on but not presently actively sending or receiving data. These maintenance subchannels permit the base station and the subscriber units to remain in phase and time synchronism in an idle mode and also request additional channels. This in turn allows fast acquisition of additional subchannels as needed by allocating new code phase subchannels. Preferably the code phases of the new channels are assigned according to a predetermined code phase relationship with respect to the code phase of the corresponding maintenance subchannel.

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.