Massachusetts Institute of Technology

Bbnt Solutions LLC.

Joanna L Kulik

Brig Barnum Elliott

Joseph Jacob Weinstein

William Scott Passman

Keith William Manning

John R Zavgren

Described are techniques used in connection with subscribe and alert services as may be embodied in a subscription system. The subscription system uses a preprocessor for preprocessing subscription and notification messages prior to submission to the subscription/publication server. The preprocessor outputs a preprocessed message including one or more identifiers categorizing an input subscription or notification message. The preprocessor uses a content graph to produce the preprocessed message. The subscription system uses a content based routing system with a tree-like topology to process preprocessed subscriptions and notifications using content graphs maintained at each node in the system. Also described is a loss detection technique using sequence numbers.

High speed subscribe-and-alert service using content graphs

A communications system has stations arranged in clusters (and) of communication member stations (CM, CM, CMand CM), with one member station (CH, CHor CH) in each cluster being a head station for the cluster. Each member station (CM, CM, CMand CM) communicates with the network through a cluster head station (CH, CHor CH). The cluster head stations (CH, CHand CH) communicate among other cluster head stations (CH, CHand CH). A mobile communications station (e.g., CM) evaluates a beacon message received from a first member station (e.g., CM) of the plurality of mobile stations through a transceiver. The station CMalso determines whether to communicate with the first member station CMdirectly or to communicate with the first member station CMby forwarding messages through a cluster head station CHthat is affiliated to the mobile communications station CM

Using direct cluster member to cluster member links to improve performance in mobile communication systems

Growing community of inventors

Somerville, MA, United States of America

Joanna L Kulik