# US 2014/0153503 A1 · Systems and methods for beaconing and management in bandwidth adaptive wireless networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153503 A1 - Document ID: US20140153503A1 - Status: Published application - Kind: A1 - Application number: 14/008,706 - Filed: 2012-03-23 - Published: 2014-06-05 - Earliest claimed: 2011-03-30 - Assignees: Alcatel Lucent - Inventors: Vikram Srinivasan; Supratim Deb; Kanthi C N; Piyush Gupta - Web page: https://patentgrep.com/patent/US20140153503A1 ## CPC - H04W 28/20: Negotiating bandwidth - H04W 72/541: using the level of interference - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Systems and methods for beaconing and management in bandwidth adaptive wireless networks are disclosed. The present invention relates to bandwidth allocation for access points and, more particularly, to bandwidth allocation for access points in wireless networks. The method employs mechanisms for beaconing and management to associate clients with Access Point (AP). The beaconing mechanism allows the client to discover part of the spectrum over which an AP operates efficiently. Periodic beacon messages are sent by AP to the client over the bandwidth of operation of the channel. The client then sends a client association request and gets associated with the AP. Further, critical information is conveyed to the AP in the beacon message. The AP further allocates the client to one of its radios of operation. The system is configured to handle disruptions and switching the AP to different parts of the spectrum during such disruptions. ## Claims ### Claim 1 An access point for dynamic allocation of bandwidths in television whitespace spectrum for plurality of clients, said access point configured for performing a scan at intervals to determine available channels in said television whitespace spectrum; periodically sending messages over at least one said available channel of said television whitespace spectrum; accepting a request message from a client from said plurality of clients; and allocating at least one of the radios of said access point to said client for communication over said television whitespace spectrum. ### Claim 2 (depends on 1) The access point as in claim 1, wherein said access point sends said periodic messages where said message is a beacon message indicating center frequencies of operation, operating bandwidth at each of said center frequencies, signal strengths. ### Claim 3 (depends on 1) The access point as in claim 1, wherein said access point further sends said message to said client on event basis. ### Claim 4 (depends on 1) The access point as in claim 1, wherein said access point sends said messages periodically, where said period is pre-defined by said network operator and depends on factors that include at least one of channel switching overhead; duration of beacon message; and tolerable overhead. ### Claim 5 (depends on 1) The access point as in claim 1, wherein said access point accepts said request where said request is a request for association of said client in order to service said client. ### Claim 6 (depends on 1) The access point as in claim 1, wherein said access point further allocates time slices at intervals over bandwidth of said spectrum for control channel. ### Claim 7 An access point for handling disruptions in dynamic allocation of bandwidths in television whitespace spectrum, said access point configured for detecting if said bandwidth of said television whitespace spectrum on which said access point is operating is available; performing whitespace selection and client assignment if said bandwidth on said television whitespace spectrum is not available; and sending a message over a management frame to a client associated with said access point. ### Claim 8 (depends on 7) The access point as in claim 7, where said access point sends said message where said message gives information on changes in allocation of said bandwidth for said client. ### Claim 9 A method for dynamic allocation of bandwidths in television whitespace spectrum for plurality of clients, said method comprising performing a scan at intervals to determine available channels in said television whitespace spectrum; periodically sending messages over at least one said available channel of said television whitespace spectrum; accepting a request message from a client from said plurality of clients; and allocating at least one of the radios of said access point to said client for communication over said television whitespace spectrum. ### Claim 10 (depends on 9) The method as in claim 9, wherein method sends said periodic messages where said message is a beacon message indicating center frequencies of operation, operating bandwidth at each said of center frequencies, signal strengths. ### Claim 11 (depends on 9) The method as in claim 9, wherein said method further sends said message to said client on event basis. ### Claim 12 (depends on 9) The method as in claim 9, wherein said method sends said messages periodically, where said period is pre-defined by said network operator and depends on factors that include at least one of channel switching overhead; duration of beacon message; and tolerable overhead. ### Claim 13 (depends on 9) The method as in claim 9, wherein said method accepts said request where said request is a request for association of said client in order to service said client. ### Claim 14 (depends on 9) The method as in claim 9, wherein said method further allocates time slices at intervals over bandwidth of said spectrum for control channel. ### Claim 15 A method for handling disruptions in allocation of bandwidths in television whitespace spectrum, said method comprising detecting if said bandwidth on said television whitespace spectrum on which an access point is operating is available; performing whitespace selection and client assignment if said bandwidth on said television whitespace spectrum is not available; and sending a message over a management frame to a client associated with said access point. ### Claim 16 (depends on 15) The method as in claim 15, where said method sends said message where said message gives information on changes in allocation of said bandwidth for said client. ### Claim 17 A method for handling disruptions in allocation of bandwidths in television whitespace spectrum, said method comprising checking by a client if a bandwidth on which said access point is operating on said television whitespace spectrum is unavailable; checking if said access point is still available for service in said television whitespace spectrum; if said access point is available for service in said television whitespace spectrum switching said client to a new bandwidth on which said access point is operating. ### Claim 18 (depends on 17) The method as in claim 17, wherein said method switches said client to said new bandwidth by performing reallocation of bandwidth for said client.