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公开(公告)号：CA2780258C
公开(公告)日：2018-03-13
申请号：CA2780258
申请日：2010-11-05
Applicant: IBM
Inventor： KATAYAMA YASUNAO , NEGISHI YASUSHI , OKAZA-KI ATSUYA
Abstract: To provide a system and a communication method which enable efficient packet communication by transmitting and receiving multiple packets exclusively in time and space. [Solving means] The system includes multiple nodes performing radio communication. Each node stores routing information therein, and determines a transmission path by use of the routing information, and performs cut-through transmission by transmitting and receiving packets to a transfer destination node and from a transfer source node on the determined transmission path through transmission and reception radio waves each given a certain directivity by controlling their phases. In the system, time synchronization and transmission and reception of packet communication records are performed during a certain time period by carrying out the cut-through transmission while controlling the phases of the transmission and reception radio waves so that all of the nodes form one or more closed loops. At a time other than the certain time period, the node transmits and receives packets in accordance with the routing information and a time frame assigned to each of the nodes as a time when the each node is allowed to transmit and receive a packet, the routing information held in each of the nodes and updated on the basis of the packet communication records whose information is shared by the nodes after the time synchronization.
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公开(公告)号：CA2780258A1
公开(公告)日：2011-06-03
申请号：CA2780258
申请日：2010-11-05
Applicant: IBM
Inventor： KATAYAMA YASUNAO , NEGISHI YASUSHI , OKAZA-KI ATSUYA
Abstract: Disclosed is a system that enables efficient packet communication by exclusively transmitting and receiving a plurality of packets in space-time. Also disclosed is a communication method therefor. The system is provided with a plurality of nodes (100 to 190) that perform wireless communication, wherein the nodes store routing information, transmit and receive packets with directivity to and from transfer origin and transfer destination nodes upon a transmission path determined from the routing information by controlling the phase of the transmitted and received waves, and perform cut-through transmission. In the system, the phase of the transmitted and received waves is controlled during a given length of time in a manner such that all nodes form at least one closed loop, and time synchronization and the transmission and reception of packet communication history are performed by means of cut-through transmission. During all other time periods, the nodes transmit and receive packets in accordance with the routing information from the nodes that is updated on the basis of the time-synchronized packet communication history shared between nodes, and in accordance with the time frame in which the transmission and reception of packets that have been distributed to the nodes is possible.
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