摘要:
A method that includes receiving a reservation request from a first endpoint that comprises a bandwidth list identifying a plurality of bandwidth levels associated with the first endpoint. At least two of the bandwidth levels have a unique priority level associated therewith. The method also includes establishing a communication session between the first endpoint and at least one additional endpoint using a first bandwidth based on a first priority level. The first bandwidth and the first priority level are each associated with a first bandwidth level of the plurality of bandwidth levels. The method further includes detecting a bandwidth event that impacts a bandwidth used by the first endpoint for the communication session. The method additionally includes adjusting the bandwidth used by the first endpoint to a second bandwidth that is different than the first bandwidth based on a second priority level that is different than the first priority level.
摘要:
A method that includes receiving a reservation request from a first endpoint that comprises a bandwidth list identifying a plurality of bandwidth levels associated with the first endpoint. At least two of the bandwidth levels have a unique priority level associated therewith. The method also includes establishing a communication session between the first endpoint and at least one additional endpoint using a first bandwidth based on a first priority level. The first bandwidth and the first priority level are each associated with a first bandwidth level of the plurality of bandwidth levels. The method further includes detecting a bandwidth event that impacts a bandwidth used by the first endpoint for the communication session. The method additionally includes adjusting the bandwidth used by the first endpoint to a second bandwidth that is different than the first bandwidth based on a second priority level that is different than the first priority level.
摘要:
In one embodiment, a method includes obtaining a request from a first endpoint to establish a session, determining whether a resource reservation may be established post-ring, and identifying a second endpoint to establish the resource reservation post-ring when it is determined that the resource reservation may be established post-ring. The method also includes notifying the second endpoint of the request and ringing the second endpoint. Notifying the second endpoint of the request includes notifying the second endpoint that the resource reservation may be established post-ring.
摘要:
In one embodiment, a method includes obtaining a first message that includes at least a first bandwidth request that specifies a first bandwidth and a second bandwidth request that specifies a second bandwidth. The first bandwidth is a preferential bandwidth. The method also includes determining whether the first bandwidth may be allocated, and storing the first bandwidth and the second bandwidth in a stored reservation state if the first bandwidth may be allocated. If the first bandwidth may not be allocated, the method includes determining whether the second bandwidth may be allocated. The second bandwidth in the stored reservation state if it is determined that the second bandwidth may be allocated. In one embodiment, if the second bandwidth may be allocated, the first bandwidth is removed during process prior to sending the message to a subsequent node upstream.
摘要:
A method and corresponding apparatus establish a reservation in a segment of an end-to-end path between a data sender and a data receiver, up to a point in the end-to-end path; attempt to establish another reservation in an adjacent segment of the end-to-end path, beyond the point in the end-to-end path; and in an event that the other reservation is established in the adjacent segment of the end-to-end path, bind the other reservation to the reservation established in the segment of an end-to-end path up to the point in the end-to-end path.
摘要:
In one embodiment, a method includes obtaining a first message from an application associated with a variable bit-rate (VBR) media flow, the first message including information that has at least an approximately minimum bandwidth at which the VBR media flow may operate and an amount by which a bandwidth of the VBR media flow may be trimmed. The method also includes determining an amount of available bandwidth in a network, and identifying the approximately minimum bandwidth at which the VBR media flow may operate and the amount by which the bandwidth of the VBR media flow may be trimmed. Finally, the method includes identifying a bandwidth allocation identified based on the amount of available bandwidth in the network, the approximately minimum bandwidth at which the VBR media flow may operate, and the amount by which the bandwidth of the VBR media flow may be trimmed.
摘要:
A method of initiating a communication session includes transmitting, using a call signaling protocol, a call invitation from a first node over a network for receipt by a second node. The call invitation comprises a list of one or more codecs available to the first node for use when transmitting data over a network. The call invitation additionally comprises a traffic specification associated with each of the one or more codecs. The traffic specification associated with each of the one or mode codecs comprises a plurality of bandwidth attributes that describe the flow of data when transmitting data using each of the one or more codecs.
摘要:
A technique that allows existing reservations to be partially preempted by higher-priority reservations. An intermediate node receives a request to reserve resources for the higher-priority reservation. The higher priority entitles the reservation to acquire resources allocated to existing lower priority reservations, if necessary. If sufficient unallocated resources are not available on the preempting system to accommodate the higher-priority reservation, an error message is generated and forwarded by the intermediate node towards a receiver associated with the reservation that is to be partially preempted. The error message contains an error code and an amount of resources available on the intermediate node. The receiver processes the error message including selecting a reservation to be torn down, tearing down the selected reservation and re-reserving resources for remaining reservations, as necessary.
摘要:
In one embodiment, a method includes generating a Session Description Protocol (SDP) construct, the SDP construct being arranged to be included in a first signaling flow. The method also includes providing an attribute in the SDP construct. The attribute identifies an application type associated with a first traffic flow. Finally, the SDP construct is forwarded on the first signaling flow.
摘要:
In one embodiment, a method includes obtaining a first message that includes at least a first bandwidth request that specifies a first bandwidth and a second bandwidth request that specifies a second bandwidth. The first bandwidth is a preferential bandwidth. The method also includes determining whether the first bandwidth may be allocated, and storing the first bandwidth and the second bandwidth in a stored reservation state if the first bandwidth may be allocated. If the first bandwidth may not be allocated, the method includes determining whether the second bandwidth may be allocated. The second bandwidth in the stored reservation state if it is determined that the second bandwidth may be allocated. In one embodiment, if the second bandwidth may be allocated, the first bandwidth is removed during process prior to sending the message to a subsequent node upstream.