Abstract: A feed circuit accepts a stream of digital payload data and inserts it at predetermined first positions into a stream of digital transmission data. The feed circuit generates supplementary digital data using the stream of digital payload data and inserts it at predetermined second positions into a stream of digital transmission data. The feed circuit feeds the digital transmission data into a transmission medium. Said circuit determines the supplementary digital data in such a way that at least one frequency's portion of a frequency spectrum of the stream of digital transmission data will be minimized.

Abstract: A packet communication system includes a first communication apparatus and a second communication apparatus. The first communication apparatus generates one or more data packets each having its data volume not more than a prescribed data volume, and transmits the generated data packets to the second communication apparatus. The second communication apparatus receives the data packet transmitted from the first communication apparatus, in order of transmission. The first communication apparatus generates the data packets to be transmitted to the second communication apparatus such that one of the data packets to be last transmitted is a short packet having its data volume less than the prescribed data volume, and each of the data packets other than the data packet to be last transmitted has its data volume equal to the prescribed data volume. The second communication apparatus determines whether or not the data packet received each time is a short packet.

Abstract: A method and system suitable for use in organize communications in a network. The organization process optionally being suitable to facilitating nodal communications so as to minimize energy consumption and activity periods associated with nodal communications. The process being adaptable for use with any number of nodes, such as but not limited to nodes associated with wireless sensor nets or other networks.

Abstract: A multicast system is provided. The multicast system includes a multicast processing module and a multicast service module. The multicast processing module is for subscribing to the multicast service module. The multicast service module is for sending a subscribe response to the multicast processing module, and for transmitting data to the multicast processing module via a unicast frame. The multicast processing module is also for identifying a data initiator according to the subscribe response, and for receiving the data from the multicast service module in a multicast mode. A multicast method utilized in the multicast system is also provided.

Abstract: To provide a system enabling a function for implementing providing of a service desired by an end user to be automatically generated in a network connecting appliance. When a resource server (RS) receives a request for a specification which is desired to be implemented from a particular service adapter (SA), the requested specification is analyzed by a specification analyzing device, a virtual service adapter is formed by collecting functional modules required to implement the specification, and the formed virtual service adapter is provided for the requesting service adapter. The virtual service adapter is automatically set as a physical service adapter to implement an actually requested function in a service adapter at an end user's place.

Abstract: The present invention provides a method of scheduling packet in a wireless telecommunication system, in which the user packet queues to be transmitted are divided into the user packet queues with packet loss and the user packet queues without packet loss; for the user packet queues with packet loss, if a real time loss ratio of packet for the user exceeds a predetermined loss ratio threshold of packet, terminate a connection to the user; if the real time loss ratio of packet for the user does not exceed the predetermined loss ratio threshold of packet, schedule the user packet queues according to a volume of the loss ratio of packet; for the user packet queues without packet loss, schedule according to packet lengths, channel quality states, time delays and time delay jitters.

Abstract: There are disclosed processes and systems relating to simulated real-time packet generation to test a communications network. A first packet stream is defined and transmitted. Each packet in the first packet stream is composed from a first background data field and one or more user defined fields that overlay the first background data field.

Abstract: The invention relates to a method for transmitting digital information packets in a data network from an emitter to a receiver, the information packets being transported by means of a transport layer.