Abstract:
A method for communication includes encapsulating multiple data packets, which carry data and have respective drop precedence (DP) values selected from a range of possible DP values, to produce a concatenated frame of a transport protocol. A composite drop precedence (CDP) value is assigned from the range to the concatenated frame using a pseudo-random assignment function that depends on a distribution of the DP values of the data packets in the concatenated frame. The concatenated frame is transported through a communication network (20) using the transport protocol, in accordance with the pseudo-randomly assigned CDP value.
Abstract:
A configurable adaptive variable length data packet transmission output scheduler for enabling substantially simultaneous transmission on a common transmission link, as of fiber optics, of differentiated services for various different traffic types, executing different QOS algorithms while co-existing in a converged network environment, with simultaneous preserving of the different service characteristics for real-time or highpriority traffic and providing differentiated bandwidth allocation while achieving maximal link utilization -- all through a fine and balanced control as to which type of traffic is transmitted on the link for a given duration, and how much of that traffic is transmitted on the link.
Abstract:
A method and apparatus for transmitting network traffic includes selecting a major node in a major ring, where the major node corresponds to a first transmission opportunity encoded in the major ring. The major node specifies a minor node in a minor ring representing a virtual port. The method and apparatus also includes transmitting network traffic to a virtual connection that uses the virtual port. Alternatively, transmitting network traffic involves processing a schedule that includes a sequence of transmission opportunities encoded in a schedule ring and satisfying a minimum data rate for a scheduled virtual connection by processing a corresponding first minimum number of transmission opportunities from the schedule, each such transmission opportunity allocated by a schedule node to the scheduled virtual connection, where the schedule node is included in the schedule ring.
Abstract:
Zumindest teilweise über ein paketorientiertes Kommunikationsnetz - z.B. Ethernet (IEEE 802.3)- (EN) oder über ein zellenorientiertes Kommunikationsnetz zu übermittelnde Informationen (cell) werden als Nutzinformation (data) in ein Nutzdatenfeld (nf) zumindest eines jeweils Ziel- und Nutzinformationen (DA, data) aufweisendes Datenpaketes (dp) des Kommunikationsnetzes (EN) oder in einen Zeitschlitz des zeitschlitzorientierten Kommunikationsnetzes eingefügt. Erfindungsgemäß werden den Informationen vor dem Einfügen in das Datenpaket (dp) oder in den Zeitschlitz zusätzliche Routinginformationen (ri) zur Weitervermittlung zugeordnet, mit denen die mit dem Datenpaket (dp) oder Zeitschlitz an ein im paket- oder zellenorientierten Kommunikationsnetz angeordnetes Ziel übermittelten Informationen (cell) in Abhängigkeit von den jeweils zugeordneten Routinginformationen weitervermittelt werden. Vorteilhaft können auf kostengünstige Weise über verschiedene Verbindungen zu übermittelnde Informationen cell(vc1), cell(vc2) transparent über ein paketorientiertes Kommunikationsnetz (EN) übertragen werden.
Abstract:
Apparatus and Method for Web-Phone Service in DSL is provided. The DSL web-phone service apparatus includes: memory means for saving and managing ID number of terminal; transmitting means for, on the internet phone service access request of a terminal, retrieving ID number of access-requested terminal from the memory means, transmitting the ID number of a access-requested terminal to IP control means, receiving from the IP control means IP allocated to the access-requested terminal and transmitting the IP allocated to the access-requested terminal to the terminal; IP control means for receiving the ID number of the access-requested terminal from the transmitting means, determining whether IP is allocated to the access-requested terminal, and control IP allocation means to allocate available IP to the access-requested terminal which does not have IP, the available IP being ATM Poll number corresponding to the ID number of the access-requested terminal; and IP allocation means for allocating available IP to the access-requested terminal which does not have IP and reporting the allocated IP to the IP control means.
Abstract:
A method of categorizing a data packet or frame, such as an Ethernet packet or a Sonet frame, where one or more features of the packet or frame are identified and a corresponding priority assigned. At least two priorities, a higher and a lower priority, are used. If none of the sought after features are identified, such as if the packet or frame is of an unknown type, the packet or frame is assigned the higher priority.
Abstract:
Methods and systems for routing messages between a core network (302) and a radio network controller (102) are provided. A radio access network gateway (304) translates messages from an ATM-based protocol to a non-ATM-based protocol, such as the stream control transmission protocol and vice versa. The radio access network gateway (304) forwards the SCTP messages to the core network (302). In addition, the radio access network gateway (304) receives messages from the core network (302) formatted according to the core network protocol and translates these messages to an ATM-based protocol for communication to a radio network controller (102).
Abstract:
A switch (620, 650) to provide multi-service internetworking between multiple protocols (e.g., SS7, frame relay) using asynchronous transfer mode (ATM) routing. The switches (620, 650) receive traffic from multiple sources using multiple protocols, convert the traffic to ATM cells and providing routing of the ATM cells. The switches (620, 650) also receive traffic from the ATM network (640) and route the traffic to the appropriate devices (600, 670). Traffic from multiple sources using multiple protocols can be routed in a single ATM connection (e.g., virtual path, virtual connection). When the bandwidth of an ATM connection is reserved or consumed by traffic routed between switches (620, 650), additional ATM connections between the source and destination switches (620, 650) can be established to carry the additional traffic.
Abstract:
A multi-port communications system (100) is described, which includes hardware based subsystems for performing both physical medium dependent operations and transport convergence operations on a data transmission. A software based subsystem performs other operations as needed. Both types of subsystems are shareable by the communications ports so as to reduce a total hardware requirement of a communications system (100). In addition, processing blocks within both subsystems are adapted to be multitasking, in that they can perform multiple operations for a receive/transmit task, or even pipeline arrangement with a common memory to further maximize the flexibility and configurability of a communications system (100).
Abstract:
An interconnect network for operation within communication node, wherein the interconnect network may have features including the ability to transfer a variety of communication protocols, scalable bandwidth and reduced down-time. According to one embodiment of the invention, the communication node includes a plurality of I/O channels for coupling information into and out of the node, and the interconnect network includes at least one local interconnect module having local transfer elements for transferring information between the plurality of I/O channels; and scaling elements for expanding the interconnect network to include additional local interconnect modules, such that information can be transferred between the local interconnect modules included in the interconnect network.