Patent · US Active

Allocation of walsh codes to support calls in wireless communication networks

US7668078B2 · kind B2 · utility

8Cited by

9References

23Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Srinivasan Balasubramanian · San Diego, US
Rath Vannithamby · Portland, US

Key dates

Filing date	Mar 7, 2005
Grant date	Feb 23, 2010
Priority date	—
Expiry date	Apr 12, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH04J13/0048
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

Methods and apparatus for allocating Walsh codes to support wireless connections over fundicated and supplemental channels are disclosed. In an exemplary embodiment, a Walsh code for an incoming call is selected from a first group of Walsh spaces if any of those Walsh spaces is capable of supporting the incoming call, and selecting a Walsh code from a second group otherwise. If the Walsh space from which the Walsh code is selected is from the second group, it is marked with a time stamp. The disclosed techniques reduce fragmentation in the overall Walsh space caused by random connection and disconnection from the wireless network.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.