# US 2014/0153424 A1 · Wireless positioning method and apparatus using wireless sensor network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153424 A1 - Document ID: US20140153424A1 - Status: Published application - Kind: A1 - Application number: 14/092,964 - Filed: 2013-11-28 - Published: 2014-06-05 - Earliest claimed: 2012-11-30 - Assignees: Soongsil University Research Consortium Techno-Park - Applicants: Soongsil University Research Consortium Techno-Park - Inventors: Yo An Shin; Jian Shi; Ai Lan Hong; Kwang Yul Kim - Web page: https://patentgrep.com/patent/US20140153424A1 ## CPC - G01S 5/0289: {of multiple transceivers, e.g. in ad hoc networks} - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## Abstract Provided is a wireless positioning method using a wireless sensor network, for estimating a position of an unknown node that is a positioning target by using a plurality of anchor nodes arranged at regular intervals, the wireless positioning method including: setting a plurality of test nodes at regular intervals on a space formed by some of the plurality of anchor nodes; obtaining a number and position information of anchor nodes within a predetermined distance from the unknown node; detecting at least one test node matching the obtained number and position information; and estimating a position of the unknown node by calculating an average coordinate value of the detected at least one test node. ## Claims ### Claim 1 A wireless positioning method using a wireless sensor network, for estimating a position of an unknown node that is a positioning target by using a plurality of anchor nodes arranged at regular intervals, the wireless positioning method comprising: setting a plurality of test nodes at regular intervals on a space formed by some of the plurality of anchor nodes; obtaining a number and position information of anchor nodes within a predetermined distance from the unknown node; detecting at least one test node matching the obtained number and position information of anchor nodes; and estimating a position of the unknown node by calculating an average coordinate value of the detected at least one test node. ### Claim 2 (depends on 1) The wireless positioning method of claim 1, wherein the setting of the plurality of test nodes comprises pre-mapping and storing a number and position information of anchor nodes within a predetermined distance from the test node, with respect to each test node. ### Claim 3 (depends on 1) The wireless positioning method of claim 1, wherein the setting of the plurality of test nodes comprises mapping the number and position information of the anchor nodes within the predetermined distance from the test node, with respect to each test node, wherein test nodes in which a same number of anchor nodes are mapped are grouped and stored as at least one group according to the position information. ### Claim 4 (depends on 3) The wireless positioning method of claim 3, wherein the detecting of the at least one test node comprises primarily searching for a group matching the obtained number of anchor nodes, and secondarily searching for a test node matching the obtained position information of anchor nodes from the primarily found group. ### Claim 5 (depends on 1) The wireless positioning method of claim 1, wherein an anchor node within the predetermined distance from the unknown node is an anchor node whose reception signal intensity from the unknown node is equal to or higher than a threshold value, from among the plurality of anchor nodes. ### Claim 6 A wireless positioning apparatus using a wireless sensor network, for estimating a position of an unknown node that is a positioning target by using a plurality of anchor nodes arranged at regular intervals, the wireless positioning apparatus comprising: a test node setter for setting a plurality of test nodes at regular intervals on a space formed by some of the plurality of anchor nodes; an anchor node information obtainer for obtaining a number and position information of anchor nodes within a predetermined distance from the unknown node; a test node information detector for detecting at least one test node matching the obtained number and position information of anchor nodes; and a position estimator for estimating a position of the unknown node by calculating an average coordinate value of the detected at least one test node. ### Claim 7 (depends on 6) The wireless positioning apparatus of claim 6, wherein the test node setter pre-maps and stores a number and position information of anchor nodes within a predetermined distance from the test node, with respect to each test node. ### Claim 8 (depends on 6) The wireless positioning apparatus of claim 6, wherein the test node setter maps the number and position information of the anchor nodes within the predetermined distance from the test node, with respect to each test node, wherein test nodes in which a same number of anchor nodes are mapped are grouped and stored as at least one group according to the position information. ### Claim 9 (depends on 8) The wireless positioning apparatus of claim 8, wherein the test node information detector primarily searches for a group matching the obtained number of anchor nodes, and secondarily searches for a test node matching the obtained position information of anchor nodes from the primarily found group. ### Claim 10 (depends on 6) The wireless positioning apparatus of claim 6, wherein an anchor node within the predetermined distance from the unknown node is an anchor node whose reception signal intensity from the unknown node is equal to or higher than a threshold value, from among the plurality of anchor nodes.