250 results about "Resource Reservation Protocol" patented technology

A method and apparatus provide reserved bandwidth and QOS / COS virtual circuit connections in a network using both conventional and novel reservation protocols and frame formats. An apparatus according to the invention includes an enterprise control point that communicates with switches via a reserved signaling channel. The switches have been upgraded or replaced to include enhanced functionality. The enhanced switches detect packets that include requests for reserved connections according to existing reservation protocols such as RSVP and IEEE 802.1P / Q. Such detected packets are forwarded to the enterprise control point for processing via a reserved signaling channel. The enterprise control point identifies a path within the network that can satisfy the requested QOS / COS and reserves the requested resources all along the path from beginning to end. A method according to the invention includes detecting packets that include requests for reserved connections according to existing reservation protocols such as RSVP and IEEE 802.1P / Q, forwarding detected packets to an enterprise control point for processing via a reserved signaling channel, identifying a path within the network that can satisfy the requested QOS / COS and reserving the requested resources all along the path from beginning to end.

The invention relates to a method and scheduling apparatus for reserving radio resources in radio resource block units in a mobile communication system for a plurality of users. Further, another aspect of the invention is the indication of a radio resource reservation in radio resource block units in a mobile communication system to one of a plurality of mobile terminals. To provide a new mechanism allowing an efficient utilization of radio resources the invention proposes a resource reservation mechanism that reserves radio resources for a plurality of users in resource block units. Thereby, individual resource blocks are reserved for the individual users for a reservation period that comprises a plurality of time slots (or sub-frames). Further, the resource block reservations for the users overlap at least partially among the users, i.e. individual ones of the resource blocks are reserved for plural users.

A distributed method of establishing a path in a multi-dimensional computer network comprising a plurality of nodes for transmitting isochronous data from a source node to a destination node is disclosed. A request packet is injected into the network, the request packet specifying a request to transmit the isochronous data from one of a plurality of source nodes. The request packet is routed to at least one the plurality of source nodes, and the source node determines whether it has sufficient resources to support transmitting the isochronous data. If the source node comprises sufficient resources to support transmitting the isochronous data, the source node reserves resources within the source node to support transmitting the isochronous data, and transmits an ack packet from the source node to a first neighboring node. The first neighboring node determines whether it has sufficient resources to support transmitting the isochronous data. If the first neighboring node comprises sufficient resources to support transmitting the isochronous data, the first neighboring node reserves resources within the first neighboring node to support transmitting the isochronous data, and transmits the ack packet to an adjacent node. If the first neighboring node does not comprise sufficient resources to support transmitting the isochronous data, the first neighboring node transmits a nack packet to the source node and the source node transmits the ack packet to a second neighboring node.

A network system comprising terminals and relaying nodes having a reservation message processing unit for transferring a packet wherein a packet receiving terminal 3 requests a reservation of network resources. The packet receiving terminal 3 transmits to a packet transmitting terminal 1 a request message in which a reservation request condition is stored in order to request a resource reservation, the packet transmitting terminal 1 having received the request message transmits to the relaying node 2 on the same route as the packet an acknowledgement message in which the reservation request condition is stored. Each relaying node 2 provides a resource reservation for the home relaying node according to the reservation request condition in the acknowledgement message and transfers the acknowledgement message to the same route as the packet. After the acknowledgement message has passed through all the relaying node 2, and when the packet receiving terminal has received the acknowledgement message, a network resource reservation procedure is completed.

A method and apparatus is disclosed herein for a resource allocation protocol. In one embodiment, the apparatus comprises a resource allocation engine to allocate physical resources to primary and redundant virtual infrastructures, wherein, when the resource allocation engine allocates virtual infrastructures, physical resources of redundant virtual infrastructures are shared across multiple primary virtual infrastructures.

A packet-switched data network is disclosed that includes a dynamic resource reservation adjustment module that adjusts unicast data flows in reserved resources of the data network to maintain an optimal level of QoS for an application session. A receiver node obtains a reservation for a plurality of unicast packet flows from various routers on the data network. The receiver node also makes a partial reservation for a predetermined amount of bandwidth on each respective router to compensate for one of the unicast packet flows if a respective router experiences a bottleneck.

Disclosed is a Quality-of-Service (QoS) Support method in a mobile communication system including an access terminal, an access network for performing packet data communication with the access terminal, a packet control function for controlling transmission and reception of packet data between the access network and the access terminal, and a packet data service node for exchanging packet data with the packet control function. The access terminal maps a requirement based on an application characteristic to an IP QoS parameter, generates a resource reservation protocol message, and transmits the resource reservation protocol message to the packet data service node. The packet data service node maps IP QoS information to be transmitted to the access terminal to QoS information needed in the access network, and transmits the mapping result to the access network via the packet control function. The access terminal receives data including QoS information from the packet data service node, and performs communication according to the QoS information.

The embodiments described herein present methods and apparatuses for on-path CAC operations in a MPLS-VPN environment. In an example embodiment, an ingress PE device receives a quality of service (QoS) resource reservation request; constructs an outgoing message that includes information allowing an egress PE device to identify the virtual private network routing and forwarding table (VRF) associated with a resource reservation resulting from the QoS resource reservation request; and transmits the outgoing message to the egress PE device, where the information allowing VRF identification is echoed back by the egress PE device and used by the ingress PE device to identify the VRF associated with the resource reservation resulting from the QoS resource reservation request. Other embodiments are described.

Methods and apparatus for enabling a layer 2 node associated with an open systems interconnection (OSI) reference model to perform resource reservation protocol (RSVP) processing are disclosed. According to one aspect of the present invention a layer 2 device associated with an OSI reference model includes a first interface, a processing arrangement, and a second interface. The first interface intercepts a message associated with a on-path signaling protocol for at least one selected from a group including resource reservation and admission control at a layer above layer 2. The processing arrangement processes the message, and the second interface sends the message.

The present invention provides a method for operating a network system and a network system operated correspondingly for improving network resource reservations and allocations. Information included in signaling messages of a given protocol, like the resource reservation protocol (RSVP), which do not provide information about the actual communications status in the network. According to the invention, information concerning the communications / service quality of the network are collected from all over the network. In particular, such information is collected from all network domains and their routers, respectively. The collected information is communicated in the network by extending the signaling messages obtained on the basis of the given protocol. Utilizing the collected information, service quality negotiations between a server and its client are improved. This improvement can be achieved for network systems comprising a network domain serving a single client, and multicasting networks. Furthermore, the present invention provides a solution for pre-reservation of network resources which avoids an unnecessary reservation of network resources and a waste of network resources for subsequent resource allocations.

In a distributed computing system, an end terminal transmits a job execution request to a job scheduler, which in response determines a resource and a job execution period necessary for executing a job on the resource based on contents of the job indicated in the message. A reservation request message containing the job execution period and the resource identity is sent from the job scheduler to a target resource proxy. The resource proxy determines a scheduled period of the resource based on the job execution period by checking its schedule memory, and transmits a reservation response to the job scheduler. The job scheduler acquires a certificate signed by the user from the end terminal and transmits the acquired certificate to the resource proxy. In response to the certificate of the user, the resource proxy makes a reservation of the identified resource according to the scheduled period.

Traffic is admitted to a network that facilitates differentiated end-to-end data transport between a Network Service Provider (NSP) and / or an Application Service Provider (ASP) and a customer Premises Network (CPN) that includes Customer Premises Equipment (CPE) by obtaining from a user of the network policy information associated with services accessed through the network. Communication is established between a node in the network and the NSP and / or the ASP and between the node in the network and the CPN using a resource reservation protocol (RSVP) to request resources for a flow having one of the services associated therewith between the NSP and / or the ASP and the CPN. A determination is made at the node in the network whether to grant or deny access to the RAN to the flow based on the policy associated with the one of the services.

A Resource ReSerVation Protocol (RSVP) proxy is used in combination with a signaling proxy to provide improved admission control, Quality of Service (QoS) reservation, and media path routing. This avoids entangling call signaling with media plane functions as required with Session Border Controllers (SBCs). A QoS access network control scheme, such as Packet Cable Multi-Media (PCMM) and / or Dynamic Quality of Service (DQoS), is conventionally used to set up QoS and other flow states on an access network. However, the gate parameters established during this access operation are also provided to an RSVP proxy in an edge router. The gate parameters trigger the RSVP proxy to attempt to establish a QoS reservation over the packet network toward a media flow destination. If admission control for the QoS reservation is successful, the edge router permits the signaling proxy to complete the media call.

A technique that facilitates application synchronization with a reservation protocol at a sender without application receiver participation in a computer network. According to the novel technique, the sender sends a path request message to a reservation receiver and may include a request for fast path failure notification to be returned to the sender. The reservation receiver (e.g., a reservation receiver proxy upstream from the application receiver) receives the path request, and in response, returns a reservation request message to the sender, including a request for fast reservation failure notification also to be sent to the sender (e.g., in response to detecting the fast path failure notification request, local policy / configuration, etc.). In the event that an intermediate node between the sender and reservation receiver detects an error during the path request or reservation request, the intermediate node sends corresponding fast failure notification to the sender. The sender may then synchronize, e.g., an application with the reservation protocol, based on receipt of a fast failure notification or a successful reservation request message.

The present invention relates to resource reservation for establishing end-to-end quality of service in a digital communication system, without resource reservation signalling over the access bearer. The solution, according to the invention is to remove the resource reservation protocol signalling on the IP level, over the access interface, e.g. the expensive and narrow radio channel, and introduce an resource reservation protocol proxy in the network. The introduction of the proxy functionality still supports the possibility, or meets the requirement, to reserve resources end to end.

The invention discloses a handover control method and system based on resource reservation in a satellite network. The method comprises the steps of: 1, determining a service statistical average communication duration, a bandwidth demand and a service handover interruption rate according to a service request of a terminal; 2, dividing one beam cell into multiple sub-cells according to the servicestatistical average communication duration based on the relation between the service statistical average communication duration and a satellite network beam cell channel duration; 3, calculating beamsub-cells of a satellite accessed by the service terminal; 4, setting the time when the terminal initiates a resource reservation request in each sub-cell by using the predictability of satellite network link handover and the positioning information of the terminal; and 5, implementing resource reservation of different methods for a new network access service and a service to be handed over according to the real-time resource status of next beam sub-cell.

A system and method for allocating physical memory in a distributed, shared memory system and for maintaining interaction with the memory using a reservation protocol is disclosed. In various embodiments, a processor node may broadcast a memory request message to a first subset of nodes connected to it via a communication network. If none of these nodes is able to satisfy the request, the processor node may broadcast the request message to additional subsets of nodes until a positive response is received. The reservation protocol may include a four-way handshake between the requesting processor node and a memory node that can fulfill the request. The method may include creation of a reservation structure on the requesting processor and on one or more responding memory nodes. The reservation protocol may facilitate the use of a proximity-based search methodology for memory allocation in a system having an unreliable underlying transport layer.

A method for optimally serving Stations (STA) on Wireless Local Area Network (LAN) using a Controlled Contention / Resource Reservation protocol of the IEEE 802.11e standard. The Wireless LAN includes multiple STAs, mobile or Stationary, airlinked to an access point as a Basic Service Set (BSS). A Hybrid Coordinator (HC) is co-located with the access point for allocating the bandwidth for the BSS using a Controlled Contention / Resource Reservation protocol defined in the IEEE Standard 802.11(e). The HC transmits Contention Control (CC) frames and initiates Controlled Contention Intervals (CCI) having a selected number of slotted intervals. HC receives Resource Reservations (RR) detailing bandwidth needs from STA contenders during a specified time interval called the Controlled Contention Interval (CCI.). Several parameters are installed in each CC for contention control purpose. The several parameters are controlled to optimize efficient use of the wireless medium and reduce access delays for RR frames contending for the wireless medium.

The present invention relates to resource reservation for establishing end-to-end quality of service in a digital communication system, without resource reservation signalling over the access bearer. The solution, according to the invention is to remove the resource reservation protocol signalling on the IP level, over the access interface, e.g. the expensive and narrow radio channel, and introduce an resource reservation protocol proxy in the network. The introduction of the proxy functionality still supports the possibility, or meets the requirement, to reserve resources end to end.

Traffic is admitted to a network that facilitates differentiated end-to-end data transport between a Network Service Provider (NSP) and / or an Application Service Provider (ASP) and a customer Premises Network (CPN) that includes Customer Premises Equipment (CPE) by establishing communication between a node in the network and the NSP and / or the ASP and between the node in the network and the CPN using a resource reservation protocol (RSVP) to request resources for a flow between the NSP and / or the ASP and the CPN. A determination is made at the node in the RAN whether to grant or deny access to the RAN to the flow based on the network element resources available in the RAN and / or a policy associated with the NSP, ASP, and / or CPN.

To achieve end-to-end quality guarantee in regard to communication with a mobile terminal (node) in a carrier network in which Mobile IP is presupposed, in an IP network, quality guarantee is realized by performing network resource reservation in a resource reservation server receiving a resource reservation request from a node. The resource reservation server receives the resource reservation request, and decides whether the node initiating the resource reservation request is a mobile node. When the above resource reservation request is initiated from the mobile node, resource reservation is performed for the route between the mobile node and the correspondent node via a mobility management server having a home address of the mobile node.

The invention discloses a resource reservation-based relay satellite system resource scheduling method. Relay satellite system resource scheduling is carried out under a preset condition. The relay satellite system resource scheduling method specifically comprises the steps of judging whether a to-be-scheduled business set is empty or not; if not, selecting the business with the highest priority from the to-be-scheduled business set and judging whether the selected business is a sudden business or a regular business; if the selected business is the sudden business, scheduling the selected business, if the selected business is the regular business, judging whether the ratio of an available resource set in a total resource set is greater than a preset resource reservation rate or not, if so, scheduling the selected business, or else, carrying out degrading processing on the selected business and further selecting the business with the highest priority; and carrying out resource matching on the scheduled businesses. Through a resource reservation mechanism, the problem of fast scheduling of the sudden business is solved, the resource reservation-based relay satellite system resource scheduling method can be used for a large-scale dynamic resource scheduling problem in a satellite network, the response speed of scheduling is increased and the effective availability of resources is improved.

An architecture and method for performing coarse-grain reservation of lightpaths within wavelength-division-multiplexed (WDM) based photonic burst switched (PBS) networks with variable time slot provisioning. The method employs a generalized multi-protocol label switched (GMPLS)-based PBS label that includes information identifying each lightpath segment in a selected lightpath route. A resource reservation request is passed between nodes during a forward traversal of the route, wherein each node is queried to determine whether it has transmission resources (i.e., a route lightpath segment) available during a future timeframe. Soft reservations are made for each lightpath segment that is available using information contained in a corresponding label. If all lightpath segments for a selected route are available, the soft reservations turn into hard reservations. The stored reservations enable quick routing of control burst that are employed for routing data during scheduled use of the lightpaths.

An information processing apparatus is communicable with a reservation management apparatus and an information providing apparatus via a network. The information processing apparatus includes a memory and circuitry. The memory stores association information associating notification destination information and identification information for reservation with each other. The notification destination information is information used for transmitting notification to one or more target persons belonging to a same group. The circuitry obtains reservation information from the reservation management apparatus, and obtains, from the obtained reservation information, particular identification information for reservation identifying a user who requested a reservation of a resource indicated by the obtained reservation information. The circuitry identifies particular notification destination information used for transmitting the notification information relating to the obtained reservation information. The circuitry requests the information providing apparatus to send the notification information to a group associated with the identified notification destination information.

A technique avoids unnecessary preemption of resource reservations along a requested flow between nodes in a computer network. A node receives priority-based resource reservation requests and determines conditions of reservation eligibility by comparing the requested resources to the amount of available resources at the node. Specifically, the node maintains a “held resources” state where available requested resources are held prior to their being assigned or reserved (confirmed) for the requested flow, such as, e.g., during an initial Resource reSerVation Protocol (RSVP) Path message. The node includes the held resources in calculations of available resources in such a way as to prevent resources from being assigned or reserved if the resources would be subsequently preempted by a request of higher priority, or if an earlier request would first utilize the resources. The node (e.g., an end node) also prevents resources from being reserved or preempted in a duplex (bi-directional) reservation on a first flow in a first direction when resources available for a second flow in a second direction indicate a failure of the second flow.

The invention discloses a processing method for a stateful path computation element (PCE), and the stateful path computation element. The method comprises the following steps that: the stateful PCE completes path computation, and reserves resources required to be used by a path obtained through computation; the stateful PCE receives a first notification message, wherein the first notification message is used for notifying the stateful PCE of a path with resource reservation protocol (RSVP) signaling establishment failure or a path with RSVP signaling deletion success; and the stateful PCE releases resources required to be used by the path notified by the first notification message. By the invention, the real-time property and accuracy of the resource information mastered by the stateful PCE are improved, and the path computation accuracy of the PCE is improved, so that the resource conflict problem is prevented.

Disclosed is a method of resource reservation in the context of the transmission of a data content on a transmission path between a source device and a sink device belonging to a communications network. Said network comprises plurality of subnets interconnected by at least one interconnection device possessing at least two communications interfaces connected to said subnets.