# US 9,439,196 B2 · Electronic key convey solution for in-hospital medical body area network (MBAN) systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,439,196 B2 - Document ID: US9439196B2 - Status: Granted - Kind: B2 - Application number: 14/359,374 - Filed: 2012-12-04 - Published: 2014-11-20 - Granted: 2016-09-06 - Earliest claimed: 2011-12-05 - Assignees: Koninklijke Philips N.V. - Applicants: Koninklijke Philips N.V. - Inventors: Dong Wang - Web page: https://patentgrep.com/patent/US9439196B2 ## CPC - H04L 63/20: {for managing network security; network security policies in general (filtering policies H04L63/0227)} - H04W 12/0431: Key distribution or pre-distribution; Key agreement - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 74/002: {Transmission of channel access control information} - H04L 67/12: specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks - H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks - H04W 84/22: with access to wired networks - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract An electronic key conveyance system (10) of a medical institution (14) includes a control point (70). The control point (70) receives one or more electronic keys from a coordinator (12) of an MBAN spectrum. Each of the electronic keys authorizes the medical institution (14) to use at least a portion of the MBAN spectrum. The system (10) further includes a channel regulator (72) generating by a processor (80) one or more channel use rules based on the electronic keys. The channel use rules authorize MBAN systems (18, 20, 22) of the medical institution (14) to use the at least a portion of the MBAN spectrum. Even more, the system (10) includes one or more access points and/or ports (74, 76) notifying the MBAN systems (18, 20, 22) of presently authorized portions of the MBAN spectrum based on the channel use rules. The electronic key is based on the available spectrum of primary users like AMT, the rules are based on a key and the spectrum already occupied by other MBANs and their nodes. The frequency range of used 802.15.4j is 2360 MHz to 2390 MHz or 2360 MHz to 2400 MHz. Cognitive radio principles are applied. ## Claims ### Claim 1 A electronic key conveyance system of a medical institution, comprising: a control point receiving one or more electronic keys from a coordinator of an MBAN spectrum, each of the electronic keys authorizing the medical institution to use at least a portion of the MBAN spectrum; a channel regulator separate from the coordinator, the channel regulator generating by a processor one or more channel use rules based on the electronic keys, the channel use rules authorizing MBAN systems of the medical institution to use the at least a portion of the MBAN spectrum; and, one or more access points and/or ports receiving the channel use rules from the channel regulator and notifying the MBAN systems of presently authorized portions of the MBAN spectrum based on the channel use rules. ### Claim 2 (depends on 1) The system according to claim 1, wherein each of the electronic keys includes time restrictions on use of the at least a portion of the MBAN spectrum. ### Claim 3 (depends on 1) The system according to claim 1, wherein the coordinator coordinates use of the MBAN spectrum by one or more medical institutions, including the medical institution, registered with the coordinator, wherein the registered medical institutions are secondary users of the MBAN spectrum, and wherein the coordinator coordinates the use of the MBAN spectrum by the registered medical institutions to protect primary users of the MBAN spectrum. ### Claim 4 (depends on 1) The system according to claim 1, wherein the MBAN spectrum is 2360-2390 MHz. ### Claim 5 (depends on 1) The system according to claim 1, wherein each of the channel use rules includes an MBAN type and a listing of authorized channels for the MBAN type, the MBAN type corresponding to MBAN communication standard. ### Claim 6 (depends on 1) The system according to claim 1, wherein at least one of the channel rules includes a version and/or time restrictions. ### Claim 7 (depends on 1) The system according to claim 1, wherein the channel regulator generates the channel use rules to prevent overlapping usage of the MBAN spectrum by different MBAN types. ### Claim 8 (depends on 1) The system according to claim 1, wherein the channel regulator receives MBAN spectrum usage and/or deployment information from the access points and/or ports for corresponding coverage areas, and wherein the channel regulator generates the channel use rules based on the MBAN spectrum usage and/or deployment information. ### Claim 9 (depends on 1) The system according to claim 1, wherein the channel regulator dynamically adjusts allocation of the at least a portion of the MBAN spectrum between the access points and/or ports based on demand of the access points and/or ports. ### Claim 10 (depends on 1) The system according to claim 1, wherein at least one of the channel use rules is specific to one of the access points and/or ports. ### Claim 11 A electronic key conveyance system of a medical institution, comprising: a control point receiving one or more electronic keys from a coordinator of an MBAN spectrum, each of the electronic keys authorizing the medical institution to use at least a portion of the MBAN spectrum; a channel regulator generating by a processor one or more channel use rules based on the electronic keys, the channel use rules authorizing MBAN systems of the medical institution to use the at least a portion of the MBAN spectrum; and, one or more access points and/or ports receiving the channel use rules from the channel regulator and notifying the MBAN systems of presently authorized portions of the MBAN spectrum based on the channel use rules; wherein each of the access points and/or ports maintains channel use rules received from the channel regulator in a queue and notifies MBAN systems connecting and/or associated therewith of presently authorized portions of the MBAN spectrum based on the channel use rules in the queue. ### Claim 12 (depends on 11) The system of claim 11, wherein the access points and/or ports are configured to updated the queue by: determining whether a time period of the received channel use rule overlaps with a time period of any channel use rule in the queue; inserting the received channel rule into the queue and reordering the queue when there is no overlap; and checking whether the access points and/or ports has a newer rules version number than the received channel rule when there is an overlap and the channel use rule has the same MBAN device type; replacing the channel use rule with the received channel having the newer rules version number when a newer rules version number than the received channel rule exists. ### Claim 13 A method for conveying an electronic key throughout a medical institution, comprising: receiving one or more electronic keys from a coordinator of an MBAN spectrum, each of the electronic keys authorizing the medical institution to use at least a portion of the MBAN spectrum; generating, by a processor that is separate from the coordinator, one or more channel use rules based on the electronic keys, the channel use rules authorizing MBAN systems of the medical institution to use the at least a portion of the MBAN spectrum, wherein each of the channel use rules includes an MBAN type and a listing of authorized channels for the MBAN type, the MBAN type corresponding to MBAN communication standard, and the channel use rules are generated to prevent overlapping usage of the MBAN spectrum by different types of MBAN systems; and, notifying the MBAN systems of presently authorized portions of the MBAN spectrum based on the channel use rules. ### Claim 14 (depends on 13) The method according to claim 13, wherein each of the electronic keys includes time restrictions on use of the at least a portion of the MBAN spectrum. ### Claim 15 (depends on 13) The method according to claim 13, wherein the coordinator coordinates use of the MBAN spectrum by one or more medical institutions, including the medical institution, registered with the coordinator, wherein the registered medical institutions are secondary users of the MBAN spectrum, and wherein the coordinator coordinates the use of the MBAN spectrum by the registered medical institutions to protect primary users of the MBAN spectrum. ### Claim 16 (depends on 13) The method according to claim 13, wherein the MBAN spectrum is 2360-2390 MHz. ### Claim 17 (depends on 13) The method according to claim 13, wherein each of the channel use rules further includes a version and time restrictions. ### Claim 18 (depends on 13) The method according to claim 13, wherein the notifying is performed by one or more access points and/or ports, the method further including: receiving MBAN spectrum usage and/or deployment information from the access points and/or ports for corresponding coverage areas, wherein the channel use rules are generated based on the MBAN spectrum usage and/or deployment information. ### Claim 19 (depends on 13) The method according to claim 13, wherein the notifying is performed by one or more access points and/or ports, said method further including: dynamically adjusting allocation of the at least a portion of the MBAN spectrum between the access points and/or ports based on demand of the access points and/or ports. ### Claim 20 (depends on 13) A non-transitory computer readable medium carrying software for controlling one or more processors to perform the method according to claim 13.