Abstract:
Digital data which are transmitted from a plurality of external devices to execute data exchange at their natural communication speeds respectively via a data transfer line are multiplexed, and multiplexed digital data are transmitted to an external network. The multiplexed digital data received from the external network are distributed by inverse multiplexing, and distributed digital data are received by target external devices via the data transfer line. Accordingly, the digital data having different communication speeds mutually can be communicated via a common data transfer line.
Abstract:
The invention relates to a data processing system and a method for synchronizing data traffic. The invention relies on the perception that the lack of synchronization of data traffic is primarily caused by the use of different schemes for reservation of resources. According to the invention, a conversion unit is provided which converts first data into second data, the first data being controlled by a first scheme for reservation of resources and the second data being controlled by a second scheme for reservation of resources. The conversion unit may be referred to as a network-level bridge (NWB). For example, the different schemes for reservation of resources may be based on slot tables, in which case the conversion unit converts the slot assignments for the first data into the slot assignments for the second data.
Abstract:
A communication technique for transmitting packet data over parallel communication sublinks (202, 302) coupled to a processor unit (110) is provided. Initially, a method receives a packet of data from a first communication link which is coupled to a set of sublinks (116). The method distributes packets over each of the sublinks (116) utilizing a unique byte-by-byte (BBB) striping technique. Logically, the data bytes associated with each sublink (116) are collected into a slice of data and each set of slices are given a unique predetermined label. Each slice is then synchronously transmitted at the aggregate bandwidth of each sublink (116) in parallel across each corresponding sublink (116) to a receiver (120). A receiver (120) receives the slices of data from the set of sublinks (116) and aggregates the bandwidth of these two or more communication sublinks (116) into a single communication link. Unless there are errors, a packet is transmitted in order using multiple slices. The system recreates the original packet of data from sets of slices having the same unique label. Specifically, the system uses the byte-by-byte striping technique to extract the appropriate bytes of information from each slice received over the parallel sublinks (116) based upon a predetermined sublink sequence corresponding to the labels. This technique is advantageous in that it provides an optimal balance between preserving packet order and conserving network resources.
Abstract:
Digital data which are transmitted from a plurality of external devices to execute data exchange at their natural communication speeds respectively via a data transfer line are multiplexed, and multiplexed digital data are transmitted to an external network. The multiplexed digital data received from the external network are distributed by inverse multiplexing, and distributed digital data are received by target external devices via the data transfer line. Accordingly, the digital data having different communication speeds mutually can be communicated via a common data transfer line.
Abstract:
A switch matrix among tributaries of a telecommunication network operating on flows of data which are arranged according to SDH protocol, said switch matrix comprising a set of parallel branches, each of said branches comprising at least a space stage able to select and pack from the input data flow a subset of data to be exchanged, a second time stage able to store the data subset to be exchanged and comprising a random access memory device associated with a write memory and a read memory, said write memory and read memory being driven by a microprocessor and a master counter. The invention is characterized in that the read memory and write memory of each random access memory device are updated in association with a spare read memory which is common to read memories on all branches in parallel and with a spare write memory which is common to write memories on all branches in parallel, respectively.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren sowie ein Kompensationsmodul (MOD1) zur Phasenkompensation zwischen einem ersten Taktsignal (TS1) und einem zweiten Taktsignal (TS2), die dem Kompensationsmodul (MOD1, MOD2) übermittelt werden, das insbesondere ein Kompensationsmodul in einem Telekommunikationsnetz oder in einem Netzknoten eines Telekommunikationsnetzes ist. Dabei wird vorgeschlagen, dass das Kompensationsmodul (MOD1, MOD2) das mindestens eine erste Taktsignal (TS1) um eine vorbestimmte erste Verzögerungsdauer (VZ1) zu einem verzögerten ersten Taktsignal (TS1d) verzögert, dass das Kompensationsmodul (MOD1) das zweite Taktsignal (TS2) um eine vorbestimmte zweite Verzögerungsdauer (VZ2) zu einem verzögerten zweiten Taktsignal (TS2d) verzögert, und dass das Kompensationsmodul (MOD1) die zweite Verzögerungsdauer (VZ2) derart modifiziert, dass das verzögerte zweite Taktsignal (TS2d) an die Phase des verzögerten ersten Taktsignals (TS1d) angepasst ist.