3470results about How to "Avoid congestion" patented technology

When carrying out a downlink handover, a source base transceiver station from which a mobile node is moving receives packets to be transmitted, via a wireless section, to the mobile node from an IP network, and copies and transfers them to a destination base transceiver station to which the mobile node is moving. On the other hand, when carrying out an uplink handover, the source base transceiver station compares the reliability of transport blocks which are received via a wireless section, from the mobile node and which are demodulated and decoded by the local station with that of transport blocks which are received via an IP network, from another base transceiver station and which are demodulated and decoded thereby, packetizes selected transport blocks with a better quality, and transmits them to a communications-partner node according to a route table, thereby implementing distribution of traffic via the IP network.

Virtual channels are used to improve quality of service through a large port count switch. Data frames are sent from one small switch to another small switch within the large port count switch on virtual channels. The use of virtual channels helps prevent congestion caused by a first external source device sending data to a first external destination device from affecting a second external source device sending data to a second external destination device.

The invention discloses a content acquisition method, a content acquisition node and a content network, which belong to the field of communication. The method comprises the following steps of: receiving a content request, wherein the content request at least comprises an identifier of requested contents; judging whether the contents corresponding to the identifier can be locally acquired or not, and if the contents corresponding to the identifier can be locally acquired, locally acquiring the contents corresponding to the identifier; otherwise, querying a name resolution system according to the identifier to obtain a target node corresponding to the identifier, and acquiring the contents corresponding to the identifier from the target node, wherein the name resolution system comprises a hierarchical distributed hash table and a global content resolution structure; and the global content resolution structure supports name aggregation and longest match searching. The node comprises a content agent module and a content acquisition module. The content network comprises the content acquisition node and a transmission network. In the content acquisition method, the content acquisition node and the content network, a content-oriented network architecture is constructed by adopting a distributed scheme, the content delivery efficiency and the safety of the network are improved by introducing an optimization strategy, network investment is reduced, and the network is more adaptive to the rapid increasing of the contents.

Mobile routers in a tree-based network topology with a single clusterhead in an ad hoc network establish connectivity based on each attached mobile router sending a neighbor advertisement message to an attachment mobile router via a corresponding egress interface. Any neighbor advertisement message received by a mobile router is used to identify specified network prefixes that are reachable via the source of the neighbor advertisement message. Each attached mobile router outputs to its attachment router another neighbor advertisement message that specifies the network prefix used by the mobile router, and the specified network prefixes from its attached mobile routers. The mobile router also identifies peer mobile routers having the same depth, and selectively shares limited routing information with the peer routers, enabling the mobile router to bypass the clusterhead and reach remote prefixes via the peer routers without burdening the tree.