Abstract: A wireless network (1) comprises a base station (2) and sensor nodes (3). The base station (2) comprises a network interface (10), an application interface (11), topology control functions (12) a timer (13), and a buffer (14). Each sensor node (3) comprises a network interface (20), route control functions (21), processing functions (22), sensors (23), flood mechanism programs (24), tree mechanism programs (25), and data forwarding programs (26). The network operates by establishing a conventional routing tree from the sink node that is used when the network is stable. But when a sending node detects a node or link failure it dynamically switches to sending its data packets using a flooding mechanism, rather than waiting for the routing tree to be re-established. This reduces the latency for data delivery. Also, when flooding the data packets, it allows the packets to be flooded to nodes that are an equal number of hops from the sink node as the send node is from the sink node.

Abstract: A wireless network (1) comprises a base station (2) and sensor nodes (3). The base station (2) comprises a network interface (10), an application interface (11), topology control functions (12) a timer (13), and a buffer (14). Each sensor node (3) comprises a network interface (20), route control functions (21), processing functions (22), sensors (23), flood mechanism programs (24), tree mechanism programs (25), and data forwarding programs (26). The network operates by establishing a conventional routing tree from the sink node that is used when the network is stable. But when a sending node detects a node or link failure it dynamically switches to sending its data packets using a flooding mechanism, rather than waiting for the routing tree to be reestablished. This reduces the latency for data delivery. Also, when flooding the data packets, it allows the packets to be flooded to nodes that are an equal number of hops from the sink node as the send node is from the sink node.

Abstract: An electronic bridge resource management system, having a programmatically-implemented processing system. A bridge service interfaces with a plurality of clients and receives a quality of service (QOS) specification from each of the clients. A resource manager receives a QOS specification from the bridge service, distributes at least one QOS constraint associated with the QOS specification across flow processing modules of a channel, determines resource requirements for each of the flow processing modules, and then determines whether bridge resources can be allocated to meet the QOS specification. The clients may alter their QOS specifications and retry if the resource manager denies them admission because of a lack of available bridge resources.

Abstract: A network data stream synchronization method and system are disclosed. Operating delay and loss parameters are accepted and a data stream buffer is initialized. The network delay experienced by a data packet is determined and a buffer delay is imposed to provide a fixed end-to-end delay. Packets arriving too late to be played within the fixed end-to-end delay are discarded. Network delay models may be updated and clock drifts may be detected and compensated for using historical buffer data.