Fast packet switching

About: Fast packet switching is a research topic. Over the lifetime, 5641 publications have been published within this topic receiving 111603 citations.

Broadcast scheduling in packet radio networks using mixed tabu-greedy algorithm

Abstract: A two-step algorithm to solve the broadcast scheduling problem is presented. The first step employs finding a solution that has a transmission time slot for each station, while the second step attempts to maximise the throughput. Numerical examples that demonstrate the algorithm outperforms existing ones in terms of channel utilisation and packet delay are presented.

Apparatus and method for a telephony gateway

Abstract: A system and method for connecting a circuit network with a packet network. In one embodiment, the system contains a packet switch fabric, a circuit network server, a packet network server and a signal processing server. The circuit network server can send and receive circuit-based signals with the circuit network and can also send and receive packet-based signals with the packet switch fabric. The circuit network server has a digital signal processor which provides packet adaptation. The packet network server can send and receive packet-based signals with the packet switch fabric and can send and receive packet-based signals with the packet network. The signal processing server can send and receive packet-based signals with the packet switch fabric and has a digital signal processor for performing signal processing on the packet-based signals. The packet switch fabric transfers packet-based signals among the packet network server, the signal processing server, and the circuit network server.

System, method, and computer program product for IP flow routing

Abstract: A router system, method and computer program product are provided. In use, it is determined whether a flow associated with a received packet is new. If it is determined that the flow associated with the packet is new, at least a portion of the packet is routed utilizing a first module. If, on the other hand, it is determined that the flow associated with the packet is not new, at least a portion of the packet is routed or switched utilizing a second module that costs at least 10 times less than the first module.

Photonic packet switch using semiconductor optical amplifier gates

Abstract: Photonic packet switching using semiconductor optical amplifiers is reported. The optical amplifiers are used as gates to switch the optical packets and also as modulators to provide address header replacement. This eliminates the need for the fibre delay line used in previous photonic packet switching demonstrations, and allows the possibility of packet switch integration onto a single substrate. The photonic packet switch has a crosstalk performance better than 40 dB.

Hybrid local communication network, operating both in circuit and packet modes

Abstract: A hybrid local communication network operates both in circuit and packet modes with a loop carrying a TDM multiplex for interconnecting a number of terminals connected to the loop. The communications in a packet mode are controlled by a token. The header of each packet comprises the address of the called station and the address of the calling station. The TDM multiplex is arranged in multiframes comprising N frames O-(N-1). Each frame comprises P byte time slots iTO-iT(P-1) for transmitting a packet per frame. The byte time slot iTO in each frame contains the frame alignment pattern of the frame, the byte time slot iT1 contains the frame packet token byte, the byte time slots iT2-iTh contain the packet header, the byte time slots iT(h+1)-iTx contain the useful data of the packet, and the byte time slot iT(x+1)-iT (P-1) contain circuit type communication data. The service and supervision messages between any of the units, on one hand, and the loop control unit, on the other hand, are exchanged in packet mode. The digital value of x may be changed by the loop control unit which then transmits the value of x in a packet mode to every operative unit. The consecutive frames in a dialogue in packet mode between two units are used alternately by those control units involved in the dialogue, the time interval iTx of each frame being allotted to the acknowledgment transmitted by one control unit to the other control unit relating to the packet the one control unit received in the preceding frame.