Cisco Technology, Inc.

Cindy Chan

Alon Shlomo Bernstein

Arun G Khanna

Ramesh Radhakrishnan

Kushal A Patel

Ender Ayanoglu

Ozgur Gurbuz

Hui Sun

Gitesh Shah

Load balancing across RF channels in a cable plant is challenging where individual cable modems have multiple receive/transmit channels. Load balancing may be taken into account in the assignments of channels to requesting modems in a registration process. Requesting modems may be registered in a sequence of descending order defined by the number of channels requested. Channel sets may be selected to minimize a maximum delta metric of load balancing. It is preferred to normalize the 'weight' of a modem on a channel based on the modem capabilities. The relative weight may be inversely related to the number of channels supported by the modem. Load balancing techniques disclosed may be applied to both upstream and downstream channels. Current load balance quality is estimated and reported to an operator.

Modem count based load balancing in a cable network

Systems and methods for retransmitting unsuccessfully transmitted data across a communication link. The retransmission mechanism may be applied to point to multipoint networks including wireless networks. Each packet is encapsulated in an ARQ frame and assigned a sequence number for the purpose of coordinating acknowledgments and retransmissions. Information as to which packets require retransmission is communicated in the form of a bitmap where each bit indicates an acknowledgment status for a given packet. Any missing packets in the received sequence are assumed to require retransmission.

ARQ (automatic repeat request) for broadband fixed wireless network

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San Jose, CA, United States of America

Cindy Chan