# US 2014/0153386 A1 · Node and method for transmitting packets therefrom > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153386 A1 - Document ID: US20140153386A1 - Status: Published application - Kind: A1 - Application number: 13/711,267 - Filed: 2012-12-11 - Published: 2014-06-05 - Earliest claimed: 2012-12-03 - Assignees: Foundation of Soongsil University-Industry Cooperation - Applicants: Foundation of Soongsil University-Industry Cooper - Inventors: Young-Han Kim; Ngoc-Thanth Dinh - Web page: https://patentgrep.com/patent/US20140153386A1 ## CPC - H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks - H04W 24/04: Arrangements for maintaining operational condition - H04W 40/205: {using topographical information, e.g. hills, high rise buildings} - H04L 45/28: using route fault recovery - H04W 40/28: for reactive routing - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Disclosed are a node and a method of transmitting packets from the node. The disclosed node may use a directional antenna for transmitting a packet. The node includes a determining unit and a forwarding unit. The determining unit may determine whether or not there is an actor node present in a region traversed by a packet forwarding direction, where the packet forwarding direction is determined from relative-location information of a destination node with respect to a source node, the region is one of a plurality of regions divided by particular angles, and the plurality of regions have multiple beam patterns of the node formed therein. The forwarding unit may transmit the packet to an actor node present in the region traversed by the packet forwarding direction or transmit the packet to a neighbor node present in the region traversed by the packet forwarding direction. ## Claims ### Claim 1 A node for transmitting a packet using a directional antenna, the node comprising: a determining unit configured to determine whether or not there is an actor node present in a region traversed by a packet forwarding direction, wherein the packet forwarding direction is determined from relative-location information of a destination node with respect to a source node, the region is one of a plurality of regions divided by particular angles, and the plurality of regions have multiple beam patterns of the node formed therein; and a forwarding unit configured to transmit the packet to an actor node present in the region traversed by the packet forwarding direction or transmit the packet to a neighbor node present in the region traversed by the packet forwarding direction. ### Claim 2 (depends on 1) The node according to claim 1, wherein the forwarding unit transmits the packet to the actor node if it is determined that there is an actor node present, and transmits the packet to the neighbor node if it is determined that there is no actor node present. ### Claim 3 (depends on 1) The node according to claim 1, wherein the actor node is an actor node nearest to the node in the region traversed by the packet forwarding direction from among one or more actor nodes each configured to receive a location information request message transmitted from the node to each of the plurality of regions, calculate its relative position with respect to the node, and transmit a reply message including the calculated relative-location information to the node. ### Claim 4 (depends on 3) The node according to claim 3, wherein a distance from the node to the nearest actor node is shorter than a distance from the node to the destination node. ### Claim 5 (depends on 1) The node according to claim 1, wherein the neighbor node is a first node located in a region traversed by the packet forwarding direction from among multiple nodes each configured to receive a location information request message transmitted from the node to each of the plurality of regions, calculate its relative position with respect to the node, and transmit a reply message including the calculated relative-location information to the node. ### Claim 6 (depends on 5) The node according to claim 5, wherein the first node is a node located closest to the packet forwarding direction from among the multiple nodes. ### Claim 7 (depends on 5) The node according to claim 5, wherein the neighbor node is a second node located closest to the packet forwarding direction from among the multiple nodes other than the first node, if the first node is in a state incapable of transmitting the reply message. ### Claim 8 (depends on 5) The node according to claim 5, wherein the forwarding unit transmits a directional failure message to multiple nodes located in regions other than the region traversed by the packet forwarding direction from among the plurality of regions, if there is no neighbor node present in the region traversed by the packet forwarding direction. ### Claim 9 (depends on 5) The node according to claim 5, wherein the forwarding unit transmits the packet using a k-th beam pattern from among the plurality of beam patterns of the node formed in the region traversed by the packet forwarding direction, and if a directional failure message including information regarding a packet forwarding failure region is received from the neighbor node, the forwarding unit transmits the packet using a (k+1)-th beam pattern adjacent to the k-th beam pattern. ### Claim 10 (depends on 1) The node according to claim 1, wherein the region traversed by the packet forwarding direction is a region in which are formed an n-th beam pattern (wherein n is an integer greater than or equal to 2) and an (n+1)-th beam pattern and an (n−1)-th beam pattern adjacent to the n-th beam pattern from among the multiple beam patterns of the node. ### Claim 11 (depends on 1) The node according to claim 1, wherein the packet forwarding direction is a vector connecting the source node with the destination node determined from the relative-location information of the destination node with respect to the source node. ### Claim 12 A method of transmitting a packet from a node using a directional antenna, the method comprising: determining whether or not there is an actor node present in a region traversed by a packet forwarding direction, wherein the packet forwarding direction is determined from relative-location information of a destination node with respect to a source node, the region is one of a plurality of regions divided by particular angles, and the plurality of regions have multiple beam patterns of the node formed therein; and transmitting the packet to an actor node present in the region traversed by the packet forwarding direction or to a neighbor node present in the region traversed by the packet forwarding direction. ### Claim 13 (depends on 12) The method of claim 12, wherein the actor node is an actor node nearest to the node in the region traversed by the packet forwarding direction from among one or more actor nodes configured to receive a location information request message transmitted from the node to each of the plurality of regions, calculate its relative position with respect to the node, and transmit a reply message including the calculated relative-location information to the node. ### Claim 14 (depends on 12) The method of claim 12, wherein the neighbor node is a first node located in a region traversed by the packet forwarding direction from among multiple nodes each configured to receive a location information request message transmitted from the node to each of the plurality of regions, calculate its relative position with respect to the node, and transmit a reply message including the calculated relative-location information to the node. ### Claim 15 (depends on 14) The method of claim 14, wherein the neighbor node is a second node located closest to the packet forwarding direction from among the multiple nodes other than the first node, if the first node is in a state incapable of transmitting the reply message. ### Claim 16 (depends on 14) The method of claim 14, wherein the transmitting comprises transmitting a directional failure message to multiple nodes located in regions other than the region traversed by the packet forwarding direction from among the plurality of regions, if there is no neighbor node present in the region traversed by the packet forwarding direction. ### Claim 17 (depends on 14) The method of claim 14, wherein the transmitting comprises transmitting the packet using a k-th beam pattern from among the plurality of beam patterns of the node formed in the region traversed by the packet forwarding direction, and if a directional failure message including information regarding a packet forwarding failure region is received from the neighbor node, transmitting the packet using a (k+1)-th beam pattern adjacent to the k-th beam pattern. ### Claim 18 (depends on 12) The method of claim 12, wherein the region traversed by the packet forwarding direction is a region in which are formed an n-th beam pattern (wherein n is an integer greater than or equal to 2) and an (n+1)-th beam pattern and an (n−1)-th beam pattern near to the n-th beam pattern from among the multiple beam patterns of the node.