Abstract: The invention relates to a method for managing network resources in a network with a network management device (M), a network component (A), and a further network component (B), and a network management device (M), the method comprising the following steps: transmitting a request for an advance reservation of a network resource by the network component (A) to the network management device (M), wherein the request includes information regarding a reservation start time and a reservation end time; transmitting a request for an ad-hoc reservation of a further network resource by the further network component (B) to the network management device (M); allocating the further network resource to the further network component (B) by the network management device (M); and allocating the network resource to the network component (A) by the network management device (M) at the reservation start time, wherein the network resource comprises a part or all of the further network resource.

Abstract: The invention relates to a method for setting consistent values for a parameter in a network of distributed stations (10 to 14), and to a corresponding network subscriber station. In certain circumstances, it has been found that inconsistent entries can occur for the gap count parameter on the local bus in an IEEE 1394 network. If the bus management instance (25, 26) relies on the automatic behavior, as provided in the Standard, of all the network subscriber stations (10 to 11) to automatically set the maximum value of 63 after the second bus resetting process without any intermediate resetting of this parameter, this can lead to progressive resetting of the network, and this can result in blocking of the network. The problem is solved by immediate transmission of a parameter setting message for the critical network parameter once an inconsistency has been found.

Abstract: The invention relates to a method for processing a sequence of data packets in a receiver apparatus, in particular a sequence of audio and/or video data packets, as well as to a receiver apparatus.

Abstract: The invention relates to a method for synchronizing a clock of a network component with a clock of a further network component communicatively connected to the network component in a network and a network component, whereby the method comprises the following steps: determining a set of forward transition delays for transmission of messages from the network component to the further network component and a set of corresponding backward transition delays for transmission of messages from the further network component to the network component, selecting a minimum forward transition delay from the set of forward transition delays, selecting a minimum backward transition delay from the set of backward transition delays, deriving an estimated value for an offset between the clock of the network component and the clock of the further network component from the selected minimum forward transition delay and minimum backward transition delay, and adjusting the clock of the network component in accordance with the estima

Abstract: The invention relates to a method of operating a network subnet manager, in particular Infiniband network subnet manager in a subnet of a network. The subnet manager is a software entity with the task of managing, for example Infiniband subnet and can reside on any one node. The subnet manager discovers the topology of the subnet that it manages, assigns a subnet ID to each port, assigns an address to each port in the subnet, establishes the possible path between all end nodes in the subnet, sets QoS parameters and sweeps the subnet on a regular basis looking for topology changes. Only one subnet manager entity can be master within a subnet. A problem related with this specification is that a specific vendor implementation may exist with many features and internal functionality that are not specified in the network specification.

Abstract: The invention relates to a method for packet-switching transmission of media data and a device for processing media data. Media data may be video, audio or text data, or other data. Transmission of the data is usually effected according to a streaming method. The data is therein transmitted in packets and re-assembled in the receiving device. For Internet applications, the real-time transport protocol is very widely used in the transmission of data streams. However, this data transmission protocol does not enable a secure transmission which is based on a repetition of the defectively transmitted data. Sequence counters are used according to this protocol so that left-out data packets can be detected in the receiving device.

Abstract: The invention relates to a new type of quality of service architecture for a network assembly and a corresponding computer network system. The Internet technology as approved by the IETF organization has defined different services. One is the integrated services (IntServ) and the other the differentiated services (DiffServ) architecture. Another is the RSVP Protocol according to which Quality of Service can be implemented with accuracy and richer functionality. The invention shows a way how less sophisticated QoS managers inside the network with only DiffServ or Intserv capability, can be used for enhancing the QoS functionality based on so-called RSVP shadowing messages, and easy to implement RSVP shadowing stacks.

Abstract: Modern computers (10, 20) come with different timers having different attributes like time resolution, supported time range and time reference. Some are local timers, representing relative time values like the TSC counter (11, 21) counting CPU cycles from the power on or reset of the computer. Some are global timers, representing an absolute or real time. Having different classes of timers in the computer (10, 20), a number of computations need to be performed to tie the different timers to each other. It is the idea of the invention to define a single high resolution timer structure wherein the time value is represented with a digital number and a flag clarifies whether the timer is a global timer or local timer. The invention enables a much faster processing of the time values. The global time, tied to a high-resolution timer can be tracked much faster. This means better precision of scheduling of time critical jobs, like packet scheduling for data transport.

Abstract: The invention relates to a method for managing network resources in a network with a network management device (M), a network component (A), and a further network component (B), and a network management device (M), the method comprising the following steps: transmitting a request for an advance reservation of a network resource by the network component (A) to the network management device (M), wherein the request includes information regarding a reservation start time and a reservation end time; transmitting a request for an ad-hoc reservation of a further network resource by the further network component (B) to the network management device (M); allocating the further network resource to the further network component (B) by the network management device (M); and allocating the network resource to the network component (A) by the network management device (M) at the reservation start time, wherein the network resource comprises a part or all of the further network resource.

Abstract: The invention relates to a method and a device for acquiring electronic information about transmission speeds between nodes of an acyclical network, in particular of an IEEE 1394 bus network, precisely one transmission link being present between in each case two of the nodes of the network, and a respective PHY transmission speed of the transmission link being determined by a minimum value of PHY speeds of the nodes of the network lying on the transmission link, in the case of the method the respective PHY transmission speed being determined for one subset of the transmission links in the network by acquiring the PHY speeds of the nodes lying on the transmission links and electronically acquiring minimum values of the PHY speeds; and the respective PHY transmission speed being electronically acquired for another subset of the transmission links, which is different from the one subset of transmission links, on the basis of one of the PHY speeds which have been determined for the nodes lying on the transmission

Abstract: The invention relates to the field of network communication in a wide area, where a local network of a first type has a sending station that communicates with a receiving station in a local network of a second type. A network of a third type is in between the two networks and provides virtual private networking between the two local networks. The network of the first type supports a fine grained QoS, whereas the network of the third type supports a coarser grained QoS. In one example the network of the first type is RSVP capable and the network of the second type is an MPLS network. The invention resides in a component called RSVP-MPLS proxy that maps the RSVP resource advertisements and reservations within an RSVP-aware customer network to an MPLS network, whereby the receiver side doesn't participate in the RSVP communication process.

Abstract: The invention relates to a network subscriber station and to a method for operating a network subscriber station for a network of distributed stations, particularly a network of IEEE 1394 network subscriber stations, which are connected by means of a data bus. The network subscriber station comprises at least three memory areas for operation-dependent interface configuration data and pointer means, which comprise electronic pointers to the at least three memory areas, and driver means for handling electronic data in the at least three memory areas and for electronic data transfer between the at least three memory areas.

Abstract: In the domain of studio engineering (film studio, television studio, communication studio), streaming server-based computer networks have increasingly made an entrance. The streaming servers (RSA, RSB, RSC) are used to archive the original data from the recorded articles and to make them available to the various editing computers (EA, EB) via the connected high speed network (GE). This approach has the advantage of a much greater level of availability to the original data, etc. Another advantage is that new compositions based on editing lists can be created which can then be processed in the editing device (EA, EB), and the composition's data can be requested and delivered from the server devices (RSA, RSB, RSC) in real time without this requiring fully “rendered” articles to be created and stored. When editing a new article, sections of the original data are loaded into the editing computer.

Abstract: When updating a data record identified by a version number, the problem exists that a simple not equal to comparison or greater than comparison is often insufficient for ascertaining the up-to-date nature of the newly received data record, particularly if the data record is transmitted to a receiving station via an unsecured data link and the version number originates from a limited range which is repeatedly run through periodically. The invention solves the problem by virtue of the fact that it divides the range of values of the version number into the ranges “old” and “new”, on the basis of the current value of a version number. The periodicity with which the range of values is run through is taken into account in this case, however. That is to say that the range “old” or the range “new” may perfectly well include the jump from the highest value in the range of values to the lowest value in the range of values.