# US 2013/0156007 A1 · Handover in White Space Band > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0156007 A1 - Document ID: US20130156007A1 - Status: Published application - Kind: A1 - Application number: 13/816,541 - Filed: 2011-08-12 - Published: 2013-06-20 - Earliest claimed: 2010-08-12 - Assignees: LG Electronics Inc. - Inventors: Eunsun Kim; Yongho Seok; Byoung Hoon Kim - Web page: https://patentgrep.com/patent/US20130156007A1 ## CPC - H04W 36/08: Reselecting an access point - H04W 8/26: Network addressing or numbering for mobility support - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A station forms a connection with a first access point (AP): a particular station for storing first active station identification information of an active station that manages the activation of the station serviced by said first AP accesses a region serviced by a second AP, and receives from said second AP a message for containing second active station identification information of the active station that manages the activation of the station serviced by said second AP; said first active station identification information is compared with said second active station identification information; and if said first active station identification information is different from said second active station identification information, a procedure for changing the active station and a handover to said second AP are performed to a second active STA corresponding to said second active station identification information. ## Claims ### Claim 1 A method for performing handover by a station (STA) in a white space band wireless communication system, the method comprising: allowing a specific STA to access a service region of a second access point (AP), wherein the specific STA is associated with (or connected to) a first access point (AP) and stores identification information (hereinafter referred to as first enablement STA identification information) of an enablement STA managing STA enablement provided by the first AP; receiving a message including identification information of the enablement STA (hereinafter referred to as second enablement STA identification information) provided by the second AP, from the second AP; comparing the first enablement STA identification information with the second enablement STA identification information; if the first enablement STA identification information is different from the second enablement STA identification information, performing not only a procedure for changing an enablement STA to an enablement STA (hereinafter referred to as second enablement STA) corresponding to the second enablement STA identification information, but also a handover to the second AP. ### Claim 2 (depends on 1) The method according to claim 1, further comprising: if the first enablement STA identification information is identical to the second enablement STA identification information, performing a handover to the second AP without performing the enablement STA change procedure. ### Claim 3 (depends on 1) The method according to claim 1, wherein the enablement STA change procedure includes: transmitting an enablement request message to the second enablement STA; and receiving an enablement response message to the enablement request message from the second enablement STA. ### Claim 4 (depends on 1) The method according to claim 1, wherein: the received message is a beacon, and source identification information of the beacon is compared with the second enablement STA identification information so as to determine whether the second AP is the second enablement STA. ### Claim 5 (depends on 4) The method according to claim 4, wherein: if source identification information of the beacon is identical to the second enablement STA identification information, the second AP is the second enablement STA. ### Claim 6 (depends on 4) The method according to claim 4, wherein: if source identification information of the beacon is different from the second enablement STA identification information, the second AP is a dependent AP of the second enablement STA. ### Claim 7 (depends on 1) The method according to claim 1, wherein: the first enablement STA identification information and the second enablement STA identification information are MAC addresses of the enablement STA. ### Claim 8 A station (STA) device for performing handover in a white space band wireless communication system, comprising: a memory for storing identification information of an enablement STA managing STA enablement provided by a first access point (AP) (hereinafter referred to as a first AP) associated with the STA device; a transceiver, if the STA device accesses a service region of a second access point (AP), for receiving a message including identification information of the enablement STA (hereinafter referred to as second enablement STA identification information) provided by the second AP, from the second AP; and a processor connected to the memory and the transceiver, for comparing the first enablement STA identification information with the second enablement STA identification information when receiving the message, if the first enablement STA identification information is different from the second enablement STA identification information, and performing not only a procedure for changing an enablement STA to an enablement STA (hereinafter referred to as second enablement STA) corresponding to the second enablement STA identification information, but also a handover to the second AP. ### Claim 9 (depends on 8) The STA device according to claim 8, wherein: if the first enablement STA identification information is identical to the second enablement STA identification information, the processor performs a handover to the second AP without performing the enablement STA change procedure. ### Claim 10 (depends on 8) The STA device according to claim 8, wherein the enablement STA change procedure includes: transmitting an enablement request message to the second enablement STA; and receiving an enablement response message to the enablement request message from the second enablement STA. ### Claim 11 (depends on 8) The STA device according to claim 8, wherein: the received message is a beacon, and source identification information of the beacon is compared with the second enablement STA identification information so as to determine whether the second AP is the second enablement STA. ### Claim 12 (depends on 11) The STA device according to claim 11, wherein: if source identification information of the beacon is identical to the second enablement STA identification information, the second AP is the second enablement STA. ### Claim 13 (depends on 11) The STA device according to claim 11, wherein: if source identification information of the beacon is different from the second enablement STA identification information, the second AP is a dependent AP of the second enablement STA. ### Claim 14 (depends on 8) The STA device according to claim 8, wherein: the first enablement STA identification information and the second enablement STA identification information are MAC addresses of the enablement STA.