Multiplex communications – Duplex – Communication over free space
Reexamination Certificate
2003-11-05
2009-11-24
Pezzlo, John (Department: 2419)
Multiplex communications
Duplex
Communication over free space
C370S252000, C370S237000
Reexamination Certificate
active
07623477
ABSTRACT:
The invention described herein enables a form of downlink macro-diversity in packet-switched cellular networks. It allows packets to be selectively delivered from a network/internetwork to an end node, e.g., a wireless communication device or terminal, over a set of available link-layer connections to/from the end node, through one or more access nodes, e.g., base stations. Downlink macro-diversity is particularly important when the link-layer connections between the end node and the corresponding access node, e.g., the access links, are subject to independent or partially correlated time variations in signal strength and interference. In accordance with the invention, the end node dynamically selects the downlink to be used out of a set of available access links on a per packet basis subject to prevailing channel conditions, availability of air-link resources and other constraints. The invention improves the robustness and efficiency of communication, overall utilization of air-link resources, and quality of service experienced by the end node.
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Corson M. Scott
Kapoor Samir
Laroia Rajiv
Park Vincent
Pezzlo John
QUALCOMM Incorporated
Tam Kam T.
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