摘要:
Each local node of a network adjusts the priority of messages passing through the node based on locally available information. If network topology is available, priority can be given to those messages which have the most hops to go. If source identity or time is/are known, the priority of a message can be upgraded for those messages which have already taken a long time or have already experienced a large number of hops. If destination address and network topology are additionally known, end-to-end QoS can tend to be equalized for all paths.
摘要:
A system for transmitting messages among a plurality of nodes is provided. The system includes a media access scheduler for pseudorandomly scheduling discrete message start times for each node of the plurality of nodes to provide access to a shared medium. A method of minimizing power in a distributed network and a method of operating the distributed network is also provided.
摘要:
A method and system for analyzing continuous bit segments taken from a general data channel and classifying the sampled data by type, such as: voice, audio or data. B contiguous bits are converted to plus and minus deltas. The B-replaced values are then padded with B contiguous zeroes and the Fourier Transform of the padded sequence is computed. A power spectral density is derived from the Fourier Transform. In addition to the Fourier Transform, compression and entropy algorithms are performed on strings of bits within the message. The first B terms of the power spectral density and the results of the compression and entropy algorithms are used to differentiate and classify the data types, based on the premise that the combination of power spectral density, compression and entropy results yields parameters indicative of distinct types of data messages.
摘要:
A method and system of congestion control in a network are provided. A required quality of service (QoS) parameter, such as a maximum allowable latency, for a packet received at a queue in the network, and a route cost metric, such as accumulated and estimated latency, are determined, and the packet is either discarded if the route cost metric exceeds the required QoS parameter, or a discard bias value is set for the packet. Also, if the required QoS parameter exceeds the route cost metric, the method includes determining whether a congestion condition exists in the network, and if the congestion condition exists, biasing the packet for discard based on its latency if the route cost metric for the packet exceeds a threshold. The network may be an IP network, and a network such as a mobile ad hoc network (MANET).
摘要:
A system maintains quality of service of a wireless network. The system includes a first layer, a second layer, and a third layer. The first layer configures a directional antenna to transmit and receive in particular sectors based on antenna gain, transmission power, and beam width. The second layer communicates a direction and range to the first layer. The third layer maintains information summarizing connectivity between a plurality of nodes. The third layer determines whether to extend the range of the signal from a predetermined default range to an extended range.
摘要:
A system maintains quality of service of a wireless network. The system includes a first layer, a second layer, and a third layer. The first layer configures a directional antenna to transmit and receive in particular sectors based on antenna gain, transmission power, and beam width. The second layer communicates a direction and range to the first layer. The third layer maintains information summarizing connectivity between a plurality of nodes. The third layer determines whether to extend the range of the signal from a predetermined default range to an extended range.
摘要:
A method operates a limited-bandwidth network in a differential service (DiffServ) mode with DCCP congestion control to provide high throughput with good QoS.
摘要:
Systems for emergency exit LED lighting are described herein. The emergency exit lighting systems comprise structures for housing at least one LED light, an LED driver electronically coupled to the LED light(s), a continuous power source, a backup power source, and a test switch. The fixtures, in various configurations, may be mounted to an existing T-grid or to a wall or ceiling. The fixture may be tested remotely.
摘要:
An accessory attachment system for a holster with a platform body with a plurality of apertures, a mounting plate with a plurality of apertures and an optional riser joint that provides an elevated solid mounting surface for attaching accessories to a holster to provide stability for the mounted accessory. In one embodiment, the accessory attachment system allows the mounting point to be moved from the edge of the holster to a more central location and allows for variation in accessory positioning with respect to the holster.
摘要:
A telescopic intraocular lens system comprises a telescopic optical system comprising an anterior optic interconnected with a posterior optic. The optics are substantially aligned on an optical axis of the optical system. The optics are formed from a soft material and the optics are substantially immovable relative to each other along the optical axis in response to accommodative forces of the type observed in the capsular bag of the human eye.