83 results about "Information-centric networking" patented technology

One embodiment of the present invention provides a system for updating link-status information associated with a prefix in an information-centric network (ICN). During operation, a first node in the ICN receives a link-state advertisement (LSA) message from a neighbor node with the LSA message specifying a prefix and an anchor node advertising the specified prefix. The system determines, based on topology information stored on the first node, whether a shortest-path condition is met, and forwards the received LSA message to other neighbors of the first node in response to the shortest-path condition being met.

One embodiment provides an access-control framework for publishing and obtaining a collection of encrypted data in encrypted form. During operation, a content consumer can obtain a Manifest object for a data collection, such that the Manifest includes references to a set of encrypted Content Objects of the data collection, and includes one or more Access Control Specifications (ACS) that each specifies a decryption protocol for decrypting one or more Content Objects of the data collection. The consumer can disseminate Interest messages to receive encrypted Content Objects listed in the Manifest over an Information Centric Network (ICN). The client can also obtain, from the Manifest, an ACS associated with a respective encrypted Content Object, and decrypts the respective encrypted Content Object using the decryption protocol specified in the ACS.

Provided are methods of managing and storing distributed files based on an information-centric network (ICN). A method of managing distributed files performed by an ICN node includes receiving a message for requesting provision of data from a first network node, determining whether a name of the requested data is identical to a name of data stored in the ICN node, and adaptively providing the data to the first network node based on a result of the determination. Accordingly, it is possible to reduce the overall network load by preventing duplication of a data access path.

Provided are a method of communicating content in a mobile ad-hoc network and a communication node included in a mobile ad-hoc network, the method and communication node intended to efficiently perform communication based on information centric networking (ICN) in a mobile ad-hoc network and reduce the waste of energy resulting from frequent reconfiguration of communication caused by the mobility of a terminal. The method includes receiving an interest packet or a response packet for content; determining a next node to which the received packet will be relayed based on a forwarding information base (FIB) or a pending interest table (PIT), and relaying the packet using a unicast scheme; and when the relay of the packet to the next node fails, restoring a routing path by storing the packet in a relay candidate buffer and broadcasting the packet.

The invention provides an information centric networking caching method based on content popularity prediction, relates to the technical field of communication network data processing, solves a caching redundancy problem in the prior art of information centric networking caching, and improves the sharing efficiency of cached contents. In the method, each node records the content names of all request contents received by each node, and similarities among all contents are calculated and are clustered; the content popularity value of each class of contents which pass through the node is calculated and is subjected to periodic statistics; and a prediction algorithm is used for predicting the content popularity value of each class of contents of a future moment of the node, and the content popularity value is added into the data packet of a hit node; and in a data packet returning process, a content popularity prediction value carried by the data packet is compared with a local content popularity prediction value to determine whether the contents are added into a node cache or not. The method is used for optimizing the cache access of content-based information centric networking.

A system and methods for transferring information between two or more incompatible security domains or levels of classification by embedding policy-centric content management components into an information-centric network. Specifically, overlay architectures enable cloud computing for multi-level security environments.

A content-name-resolution (CNR) system can resolve IP addresses for named data objects (NDOs) based on their name. During operation, a CNR server can receive a query from a client device for a source to a named data object. The query can include at least a name prefix for the named data object. The CNR server can identify a cache server that corresponds to the named data object's name prefix, and determines one or more sources associated with the named data object's name prefix. The CNR server then returns, to the client device, a query response that includes a network address for the cache server, and includes a content record specifying the one or more sources.

One embodiment of the present invention provides a system for correctly processing interests in an information-centric network (ICN). During operation, the system receives, by a first node in the ICN, an interest for a piece of content from a second node. The interest specifies a name of the content piece. The system determines, based on forwarding information and information associated with pending interests stored on the first node, whether a forwarding condition or an interest aggregation condition is satisfied. In response to the forwarding condition being satisfied, the system forwards the interest. In response to the interest aggregation condition being satisfied, the system aggregates the interest.

One embodiment of the present invention provides a router in an information-centric network (ICN). The router includes a receiving module configured to receive an interest for a piece of content. The interest indicates a name associated with the piece of content. The router further includes an interest-processing module configured to: determine whether the interest can be forwarded; in response to determining that the interest can be forwarded to a second router, obtain a label that is specific to the second router; and attach the label to the interest. The router also includes a forwarding module configured to forward the interest to the second router with the attached label.

The invention relates to an SDN (software-defined networking)-based ICN (information-centric networking) routing method. According to the method, the thought of the separation of control and forwarding of SDN (software-defined networking) is fused in an ICN (information-centric networking) structure, network sources and network statuses are sensed, and the content name-based routing of the ICN is realized. The method mainly comprises following two steps: (1) if the interest packet of the query content of the ICN and the content are located in the same controller and are in the same community, a shortest path is adopted to forward the interest packet, if the interest packet of the query content of the ICN and the content are not in the same community, a shortest path which passes the least communities is adopted to forward the interest packet; and (2) if the interest packet of the query content of the ICN and the content are not under the same controller, query is carried out according to the set of adjoining caching capacity importance degrees of current controller, if the content is in a node controlled by a certain adjoining controller, the data packet is returned to a user along a route, if the content is not in nodes controlled by the adjoining controllers, a controller with the largest neighbor connection importance degree is set as the current controller, a next round of query is carried out until the number of the times of query achieves the maximum number of the times of query. With the method adopted, problems such as low routing efficiency and difficult configuration of the ICN can be solved.

A method for managing packets over interfaces of a Content Centric Networking node, the method comprising the following stepsreceiving over an interface of the node at least a request for a data packet;if the data packet is stored by the node, forwarding the data packet over the interface of the received request;otherwiseperforming an exploration step, byselecting randomly at least an interface towards a neighboring node;forwarding the request over the selected interface;receiving in response over the randomly selected interface, the data packet with associated minimum time delivery value estimated by the neighboring node;identifying an interface providing the minimum data packet delivery time value based on exploration step results.

A method for state based forwarding using an embedded flag in the type length values (TLV) architecture of information centric network (ICN) interfaces, the method comprises storing, in static and dynamic fashions forward information for ICN router interfaces, the stored information is stored in a pending interest table (PIT) table associated with the ICN router interface. Next, using, a flag within the stored information in the TLV architecture of the ICN router interface wherein the flag is associated with an interest capability of the ICN router interface. Further, receiving, an interest associated with flag for forwarding at the ICN router interface, and checking, the received interest with the stored information in the PIT table of the ICN router interface for forwarding to a content source.

Disclosed are a system and a method for providing information-centric networking services based on P2P. The system for providing information-centric networking services based on P2P according to the present invention includes: when receiving a request for contents from a user, a first content node configured to request the contents using a plurality of address information for the requested contents; a plurality of second content nodes configured to provide the corresponding contents according to the request of the first content node; and a query server configured to select at least one second content node for requesting the contents among the plurality of second content nodes corresponding to each of the plurality of address information.

One embodiment of the present invention provides a router in an information-centric network (ICN). The router includes a receiving module configured to receive an interest for a piece of content. The interest indicates a name associated with the piece of content. The router also includes an interest-processing module configured to: determine whether the interest can be forwarded; in response to determining that the interest can be forwarded to a second router, select an identifier from a set of identifiers assigned to the router by the second router; and process the interest by inserting the identifier into the interest. The router further includes a forwarding module configured to forward the processed interest to the second router.

Provided is a packet processing device for an information-centric network. The packet processing device includes a packet transceiver configured to transmit and receive packets, and a packet processing unit configured to process a transmitted or received packet including a forwarding identifier that identifies information present in the ICN and corresponds to an IP address of a network node holding the information, and at least one sub-identifier that identifies child information of the information, in which the forwarding identifier is used to forward packets.

An internet protocol (IP) content router, comprising a forwarding information base (FIB) engine comprising a data store comprising forwarding instructions, an IP packet classifier comprising a processor configured to classify a first incoming IP packet as an information centric networking (ICN) packet and a second incoming IP packet as a non-ICN packet, and an IP packet processor comprising a processor, wherein the IP packet processor is coupled to the FIB engine and to the IP packet classifier, wherein the IP packet processor is configured to intercept the ICN packet for further ICN processing in the IP content router, consult the FIB engine for forwarding instructions for the non-ICN packet, and forward the non-ICN packet according to the forwarding instructions.

A set of Content Store nodes of an information-centric network (ICN) can cache data, and can processes an Interest for this data based on a domain assigned to the requested data. During operation, a CS node can receive a Content Object that is to be cached, and processes the Content Object by determining a domain associated with the Content Object. The CS node selects a storage repository associated with the domain, and stores the Content Object in the selected repository. The CS node can also receive an Interest for a piece of content, and processes the Interest by performing a lookup operation for a rule associated with the Interest's name. The rule can include a set of commands for performing a programmatic operation. Then, if the CS node finds a matching rule, the CS node can execute the rule's commands to perform the programmatic operation.

A method implemented by a network device residing in a service domain, wherein the network device comprises an information centric networking (ICN) transport layer and a service access layer (SAL) for handling context-aware service logistics and service mobility overlaid on the ICN transport layer, the method comprising receiving, in the ICN transport layer, a message comprising a service request that originates from a user equipment (UE), in the SAL, retrieving, from the service request, contextual information relevant to the UE or an access network connected to the UE, determining, based on the contextual information, one or more services needed to execute the service request, and determining one or more service identities (SIDs) each of which identifies one of the one or more services.

Content-centric networking is one solution of an information-centric networking thought. The invention discloses a centralized caching decision strategy in the content-centric networking. Under the architecture of the content-centric networking, researches of basic functions, such as data naming, content forwarding and intranet caching of information-centric networking, are realized by utilizing the existing framework adopting a SDN; the centralized caching decision strategy is provided; a centralized controller is placed in the content-centric networking; the controller generates one caching list for each node by collecting all node request information, and deterministically guides each node to cache contents; therefore, the transmission flow in the network is minimized; and the user request delay is reduced.

Internet Protocol (IP) over a content / name / information centric network is contemplated, such as for devices, software or other entities lacking capabilities sufficient to natively support content / name / information centric networking and / or the related messaging protocols and requirements. The contemplated IP over content / name / information centric networking may be facilitated with encapsulation and decapsulation of IP packets when forwarded over a content / name / information centric network as well as attendant processing and protocols created to facilitate the operation thereof.

A content router, comprising a plurality of physical links to other nodes in an information centric network, a receiver coupled to the plurality of physical links configured to receive messages, a transmitter coupled to the plurality of physical links configured to transmit messages, and a service publishing and discovery (SPD) module comprising a processor and memory device coupled to the receiver and to the transmitter, wherein the SPD is configured to store status updates of the physical links, wherein the SPD is configured to determine a next hop and a number of hops to forward a received message based on a prefix in a name-based service discovery protocol name of a received message.

Disclosed is a network service system including a terminal selectively providing packets of an information centric networking (ICN) protocol and an Internet protocol, a smart digital unit (DU) identifying whether the packets provided from the terminal correspond to an ICN protocol packet or an Internet protocol packet to transfer the packets through different paths depending on a type of the identified packet, and an ICN node receiving the ICN protocol packet from the smart DU to provide contents.

In a content network over which a plurality of smart nodes is coupled, each smart node receives advertisement messages broadcasted by adjacent smart nodes. The advertisement message may be one of a link state advertisement (LSA) message including link state information indicative of a link that is a network interface, a server state advertisement (SSA) message including server state information indicative of a data storage state and a processing state of a processing unit of the smart node, and a content state advertisement (CSA) message including content state information indicative of content stored in the smart node. Each smart node updates its own database based on the information included in the received advertisement message.

The invention discloses a caching method of an ICN (Information-Centric Networking) based on an SDN, and belongs to the technical field of the Internet. The method is based on a caching mechanism of the ICN (Information-Centric Networking) of the SDN (software defined network). In the ICN, each network node has a storage function; network resources and network states are sensed through an SDN control plane; and cache placement and cache replacement are differentially realized in a whole network range through application of complex network community thoughts. The caching mechanism provided by the invention comprises two parts: a content cache placement mechanism, wherein in the mechanism, ICN data packets determine cache communities of nodes according to the community importance degree of communities to which the ICN data packets belong, and the popularity of to-be-cached contents, and in the same community, cache nodes are determined according to the node community importance degree and the popularity degree of the contents; and a cache content replacement mechanism, wherein in the mechanism, replacement contents are determined according to the node community importance degree of the nodes and the popularity degree of content objects. According to the method, the problems of low caching efficiency and inflexible control of the ICN can be solved well.

One embodiment of the present invention provides a system for updating routing information associated with a multicast group in an information-centric network (ICN). During operation, a first node in the ICN receives an update message for the multicast group from a neighbor node. The multicast group includes a root anchor node and a number of anchor nodes with the root anchor node having a smaller name than the anchor nodes. The update message specifies a prefix associated with the multicast group and the root anchor node of the multicast group. The system selects, based on topology information stored on the first node, from neighbors of the first node one or more next-hop neighbors that meet a notification condition, and forwards the update message to the one or more next-hop neighbors.

The invention provides a multipath forwarding method of a history record based information centric network, which comprises the following steps: after a first ICN (Information Centric Network) node receives an interest packet sent by a second ICN node, judging whether a preset PIT table has a name of the interest packet; if the preset PIT table does not have the name of the interest packet, judging whether a preset HRL table has the name of the interest packet; and if the preset HRL table has the name of the interest packet, forwarding the interest packet from a destination port to a third ICN node, and updating the preset PIT table with the name of the interest packet and a receiving port receiving the interest port; the destination port is the receiving port which is stored in the HRL table and is corresponding to the name of the interest packet; and each of the PIT table and the HRL table comprises the name of the interest packet or a data packet, the receiving port of the interest packet or the data packet, the receiving time and the survival time of the record. According to the multipath forwarding method disclosed by the invention, a subsequent forwarding request is guided by pre-judging the content buffered by a neighbor node, the buffer utilization rate is improved; and the invention further provides a forwarding system.

One embodiment of the present invention provides a computing system. The computing system includes a processor and a computer-readable storage medium. The computer-readable storage medium stores instructions which when executed by the processor cause the processor to perform a method. The method comprises identifying an identifier of an anchor node associated with a name in an update message received from a neighbor node. The anchor node stores a content object identifiable based on the name independent of the anchor node. The method also comprises determining a valid next-hop neighbor in the ICN for the name based on a sequence number of the update message generated by the anchor node and lexicographic order of an identifier of the neighbor node; and determining whether the anchor node is a designated anchor node based on the validity of the next-hop neighbor and a routing metric for the anchor node.

A network node apparatus for Information-Centric Networking (ICN) and an operating method thereof. The network node apparatus has a control plane and a data plane, which are separate from each other, and manages location information of content on the data plane concentratedly. For example, the network node apparatus includes a Content Service Coordination Function (CSCF) configured to process a content request from a user or a publication request from a content provider; a Content Delivery Control Function (CDCF) configured to select an optimal service node to handle the content request or the publication request; and a Content Delivery Service Function (CDSF) configured to download requested content to the user or to download from the content provider content requested to be published and then register the downloaded content.