摘要:
The embodiments of the present invention disclose a method, an apparatus and a system for bandwidth control, wherein the method comprises: acquiring and identifying a HTTP request message of a stream media-on-demand service, and forwarding the HTTP request message of the stream media-on-demand service to a media server; receiving a HTTP response message which is returned from the media server and corresponds to the HTTP request message of the stream media-on-demand service; parsing the HTTP response message, and obtaining a playback bit-rate of a stream media file to be transmitted; determining a transmission bandwidth allocated practically for the stream media-on-demand service according to comparison result between the playback bit-rate and a user subscription bandwidth allocated initially for the stream media-on-demand service; and controlling the transmission of the stream media file by adopting the determined transmission bandwidth. As such, in the embodiments of the present invention, the bandwidth control is performed directly on the network element, thereby solving the problem in the prior art that there are more interactions between different network elements and the processing overhead of other network elements is additionally increased while the utilization rate of the network resources is simply and effectively increased.
摘要:
Method and arrangement for network resource management in a communication network,especially related to transfer of content. A content resource broker is introduced, which dynamically manages resources based on the size of the content to be transferred. The method and arrangement involve the obtaining of information on current and future network capacity, which is available for transfer of content; the receiving of a request from a requesting entity concerning resources for transfer of a content C; and the determining of whether the available network capacity within a predetermined response time is sufficient for transferring the content C before the predetermined response time has expired.
摘要:
The invention relates to a method, a bandwidth broker and an edge node for providing a predefined quality of service between two communication partners, wherein the quality of service is provided by means of a plurality of connections and a decentralised admission control.
摘要:
System for monitoring and optimizing traffic in MPLS-DiffServ networks, the method comprising: - receiving and executing the Network Element Manager, NEM (7), monitoring instructions from the Network Management System, NMS (6); - sending the NEM (7) to the NMS (6) QoS parameters retrieved from the router (9); - analyzing the NEM (7) SNMP events generated in the router (9), sending said analyzed SNMP events to the NMS (6); - detecting the NEM (7), for each class i supported by the router (9), whether used bandwidth BW i in a LSP is outside an interval (BW MINI - BW MAxi ); in that case sending an alarm message to the NMS (6); - analyzing the NMS (6) the alarm messages from the NEMs (7); - in case a specific class within a LSP in under/over utilization, modifying the LSP parameters accordingly to adjust them to the current network situation.
摘要:
A video sequence is to be transmitted at a selectable quality from a server over a network. A network control protocol operates in response to a control parameter to allocate to the server a share of available transmission capacity in proportion to the value of the control parameter. First, one determines a plurality of transmission rate values that are needed over successive time periods of the sequence for successful transmission of the sequence at a reference quality; then the control parameter is set, proportional to the transmission rate value and communicated to the control protocol at corresponding time instants. The sequences can then be transmitted, encoded at a quality from time to time selected in dependence upon the actual transmission capacity made available by the network to the server.
摘要:
Method and apparatus for processing packet flows in a communication system. In one embodiment, a resource reservation message includes packet flow parameter information used to determine flow treatment of the associated packet flow. The packet flow mapping is based on the quality of service of the associated packet flow. In another embodiment, a bearer connection is established and monitored for information relating to flow treatment.
摘要:
A call admission control system and method for Internet Protocol (IP) Differentiated Services (DiffServ) network having at least one node for interpreting signaling messages and controlling traffic load in the network. The method consists of an initialization (601) and a real-time phase (602). In initialization phase (601), coefficients of the approximating hyperplanes are computed (61) and stored (62). This phase is repeated when the descriptor of a traffic class changes (63), which usually happens when nodes are configured or reconfigured. A traffic mix is admissible (67), if for each real-time traffic class both the stability (65) and the delay (66) constraints are fulfilled. Stability is tested by evaluating the number of lost packets and comparing it to the tolerated packet loss ratio for each class in that queue. Delay constraint is tested by checking if the traffic mix is below at least one of the approximating hyperplanes in the space of number of sessions for each class.