Method and apparatus for efficient and deterministic group alerting

• US 20060187897A1
• Filed: 12/16/2005
• Published: 08/24/2006
• Est. Priority Date: 12/16/2004
• Status: Active Grant

• Current Assignee: CRITICAL HOLDINGS, INC.
• Original Assignee: Critical Response Systems, Inc.
• Inventors: Claise, Brian, Dabbs, James M. III
• Granted Patent: US 7,969,959 B2
• Time in Patent Office: Days
• US Class Current: 370/349
• CPC Class Codes: H04L 12/185 with management of multicast group membership
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 4/12 Messaging; Mailboxes; Announcements
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 84/022 One-way selective calling networks, e.g. wide area paging
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A system and method are provided for reliable, wireless group alerting in a system having a database, switch, wireless network, and a plurality of intelligent mobile receivers, and preferably employing a modified two-way paging based on ReFLEX™ protocol information service (IS) messages and a novel ALOHA command for multicast acknowledgement from mobile receivers. An encrypted message is broadcast to a group address and received by a selected number of the mobile receivers. The network replies to the sender with detailed information about the individual members in the alert group. Each of the mobile receivers in the group then acknowledges the common message back to the system, decrypts the message, displays it to the user, and allows the user to respond. The system employs centralized management to simplify the roles of the mobile users and administrators, minimizing configuration and operational human errors that would otherwise result in confusion or lost messages.

Claims

1. A method of alerting a group of recipients over a wireless network, each recipient comprising a mobile device capable of transmitting and receiving data, the method comprising the steps of:

storing for each recipient an assigned primary identifying address and one or more group addresses that are shared with selected ones of the other recipients;

receiving a communication from a network client requesting wireless transmission of a message to recipients sharing a selected one of the group addresses;

transmitting a communication to the network client comprising group information relating to the selected group addresses, the group information comprising at least one of the number of the recipients having the selected group address and the identifying addresses of the recipients having the selected group address;

broadcasting the message to the selected group address via a wireless network;

receiving acknowledgment responses from the recipients sharing the selected group address via the wireless network; and

providing the acknowledgment responses to the network client.

2. A method as claimed in claim 1, further comprising the step of customizing handling by a selected recipient of messages broadcast to different ones of the group addresses to which the selected recipient belongs.

3. A method as claimed in claim 1, wherein the message instructs at least one of the recipients to perform an action in addition to or instead of displaying message text to the user.

4. A method as claimed in claim 1, further comprising the step of displaying at least one of content of the message, group name corresponding to the selected group address and multiple choice options for responding to the message on a display operated by the recipient.

5. A method as claimed in claim 1, wherein the message indicates that the recipients are to perform at least one of a plurality of operations comprising sending acknowledgement that the group dispatch forward message was received, sending acknowledgement that the group dispatch forward message was read, and selecting from among a number of multiple choice response options.

6. A method as claimed in claim 1, wherein the message employs a group address and instructs the recipients to assign a symbolic group name to the group address.

7. A method as claimed in claim 1, further comprising the steps of:

receiving responses from recipients having the selected group address; and

providing the responses to the network client.

8. A method as claimed in claim 1, further comprising the step of the recipients providing recipient identifying and status information in the responses to convey status of multiple recipients in the group corresponding to the selected group address to the network client.

9. A method as claimed in claim 8, wherein the status information comprises at least one of a timestamp for when the response was received from the recipient, success or failure of the recipient to receive the message, confirmation that the message was displayed via the recipient, and confirmation that the response was one of multiple choices for responses provided to the recipient.

10. A method as claimed in claim 1, further comprising the step of receiving responses to the message from the recipients having the selected group address.

11. A method as claimed in claim 10, wherein the message comprises display content and a list of responses for a recipient to select from.

12. A method as claimed in claim 10, wherein the message comprises options for responding for a recipient to select from.

13. A method as claimed in claim 10, wherein the message comprises a message identifier, and further comprising the steps of:

associating received responses from recipients having the selected group address with the message corresponding to the message identifier

14. A method as claimed in claim 1, wherein the storing step comprises the steps of:

storing at least one of a symbolic name and a corresponding encryption key for each of a number of group addresses; and

replicating via wireless transactions the at least one of symbolic name and a corresponding encryption key in a memory device the recipient for each of the group addresses to which a recipient belongs.

15. A method as claimed in claim 14, wherein the broadcasting step comprises the steps of generating and transmitting a one-way, ReFLEX protocol-formatted, one-to-many broadcast group alert message comprising an information service (IS) message, and further comprising the steps of:

the recipients assigning the symbolic name of the selected group address to the IS address; and

displaying the symbolic name on respective displays of the recipients.

16. A method as claimed in claim 14, wherein the symbolic name is a small mnemonic value, and further comprising the steps of:

receiving responses to the message from the recipients sharing the selected group address, the responses being compressed by the recipients using the small mnemonic value for the selected group address in the responses.

17. A method as claimed in claim 1, wherein the storing step further comprises the steps of:

maintaining a database for storing data relating to the recipients, the groups and the memberships of recipients to various ones of the groups; and

performing wireless configuration transactions to synchronize the memories of respective ones of the recipients with the database.

18. A method as claimed in claim 17, wherein the performing step comprises the steps of:

replicating at least one of group membership configuration information and group encryption keys to the recipients; and

receiving confirmation responses from the recipients relating to updating of the at least one of group membership configuration information and group encryption keys in their respective memories.

19. A method as claimed in claim 17, wherein the database and the memories comprise carbon copy flags to define functional aspects for each of the recipients with respect to different groups, and further comprising the steps of:

setting the carbon copy flags of selected ones of the recipients in a selected group to a first setting to allow them to respond to a message transmitted to the group address of the selected group; and

setting the carbon copy flags of the remaining ones of the recipients in the selected group to a second setting to prevent them from responding to a message transmitted to the group address of the selected group.

20. A method as claimed in claim 1, wherein the transmitting step comprises the step of immediately replying to the communication from the network client requesting wireless transmission of the message to the selected group address with the identifying addresses of the recipients having the selected group address.

21. A method as claimed in claim 1, wherein the step of broadcasting the message comprises the step of:

encrypting the message using an encryption key assigned to the selected group address and provided to the recipients sharing the selected group address.

22. A method as claimed in claim 1, wherein the step of broadcasting the message comprises the step of assigning a message sequence number to the message, and the step of receiving the acknowledgement responses from the recipients comprises the step of providing in at least one of the acknowledgment responses the primary identifying address of the corresponding one of the recipients and the message sequence number to uniquely identify a specific group message at the corresponding one of the recipients.

23. A method as claimed in claim 1, wherein the broadcasting step comprises the steps of generating and transmitting a one-way, ReFLEX protocol-formatted, one-to-many broadcast group alert message comprising an information service (IS) message.

24. A method as claimed in claim 23, wherein the group alert message comprises reply options for the recipients.

25. A method as claimed in claim 23, wherein said receiving step for receiving acknowledgment responses comprises the steps of recipients generating and transmitting a ReFLEX protocol multicast ACK signal when the group alert message is received.

26. A method as claimed in claim 1, wherein the broadcasting step comprises the step of generating and transmitting one-way, ReFLEX protocol-formatted, one-to-many broadcast group dispatch forward message comprising at least one of an information service (IS) message and a personal message having a control field therein to specify how the recipients are to respond to the group dispatch forward message.

27. A method as claimed in claim 26, wherein said control field indicates that the recipients are to perform at least one of a plurality of operations comprising sending acknowledgement that the group dispatch forward message was received, sending acknowledgement that the group dispatch forward message was read, and selecting from among a number of multiple choice response options.

28. A method as claimed in claim 26, wherein the control field indicates that the recipients are to send a control command to a peripheral device.

29. A method as claimed in claim 1, wherein the broadcasting step comprises the step of transmitting a group alert message to the recipients sharing the selected group address via the paging network using a single network transaction.

30. An apparatus for alerting a group of recipients over a wireless network, each recipient comprising a mobile device having a two-way wireless communication function, the apparatus comprising:

at least one of a memory device and an interface to an external memory device for storing for each recipient an assigned primary identifying address and one or more group addresses that are shared with selected ones of the other recipients;

a network client interface for receiving a communication from a network client requesting wireless transmission of a message to recipients sharing a selected one of the group addresses;

a wireless communication network interface for communicating with the recipients via a wireless communication network; and

a processing device connected to the memory device, the network client interface and the wireless communication network interface, the processing device being programmed to

transmit a communication to the network client comprising group information relating to the selected group addresses, the group information comprising at least one of the number of the recipients having the selected group address and the identifying addresses of the recipients having the selected group address,

broadcast the message to the selected group address via the wireless communication network and the wireless communication network interface,

receive acknowledgment responses from the recipients sharing the selected group address via the wireless communication network, and

provide the acknowledgment responses to the network client.

31. An apparatus as claimed in claim 30, wherein the processing device is programmed to generate and transmit a one-way, ReFLEX protocol-formatted, one-to-many broadcast group alert message comprising an information service (IS) message.

32. An apparatus as claimed in claim 31, wherein the group alert message comprises reply options for the recipients.

33. An apparatus as claimed in claim 31, wherein the apparatus is configured to receive via the wireless communication network interface a ReFLEX protocol multicast ACK signal from each of the recipients when it has received the group alert message.

34. An apparatus as claimed in claim 31, wherein the processing device is programmed to generate and transmit the message to the recipients sharing the selected group address via the wireless communication network using a single network transaction.

35. An apparatus as claimed in claim 30, wherein the processing device is programmed to

store in at least one of the memory device and the external memory device data relating to the recipients, the groups and the memberships of recipients to various ones of the groups;

and

perform wireless configuration transactions to synchronize the memories of respective ones of the recipients with the data in the at least one of the memory device and the external memory device.

36. An apparatus as claimed in claim 35, wherein the processing device is programmed to replicate at least one of group membership configuration information and group encryption keys to the recipients, and receive confirmation responses from the recipients relating to updating of the at least one of group membership configuration information and group encryption keys in their respective memories.

37. An apparatus as claimed in claim 35, wherein the memories and the at least one of the memory device and the external memory device comprise carbon copy flags to define functional aspects for each of the recipients with respect to different groups, and wherein the processing device is programmed to

set the carbon copy flags of selected ones of the recipients in a selected group to a first setting to allow them to respond to a message transmitted to the group address of the selected group, and

set the carbon copy flags of the remaining ones of the recipients in the selected group to a second setting to prevent them from responding to a message transmitted to the group address of the selected group.

39. An apparatus as claimed in claim 30, wherein group addresses are reserved for local use as an on-site warning system to create a rapid deployment system employing the recipients.

40. A mobile device having a two-way wireless communication function for receiving and processing group alerts directed to a group of recipients over a wireless network, the mobile device comprising:

a memory device for storing an assigned primary identifying address for its corresponding recipient and one or more group addresses that are shared with selected ones of the other recipients;

a wireless communication network interface for communicating with a switch via a wireless communication network to receive messages therefore and to transmit responses to the switch; and

a processing device connected to the memory device and the wireless communication network interface, the processing device being programmed to receive a message broadcast by the switch to a selected group address via the wireless communication network, to determine if it shares the selected group address, and to transmit an acknowledgment response to the switch via the wireless communication network if it shares the selected group address.

41. A mobile device as claimed in claim 40, wherein the processing device is programmed to send a command to a telemetry device in response to a corresponding instruction in the message.

42. A mobile device as claimed in claim 40, further comprising a display device, the processing device being programmed to display on the display device at least one of content of the message, group name corresponding to the selected group address and multiple choice options provided in the message for responding to the message.

43. A mobile device as claimed in claim 40, wherein the processing device is programmed to configure the mobile device to be a listen-only group member of a selected group address for receiving the message sent to the selected group address but not transmitting the acknowledgment response to the switch in response to the message.

44. A mobile device as claimed in claim 40, wherein the processing device is programmed to generate and transmit a ReFLEX protocol multicast ACK signal when the message is received.

45. A mobile device as claimed in claim 44, wherein the message is a one-way, ReFLEX protocol-formatted, one-to-many broadcast group alert message comprising an information service (IS) message, and the processing device is programmed to generate an ALOHA command in response to the IS message as the multicast ACK signal when the message is received.

46. A mobile device as claimed in claim 40, wherein the processing device is programmed to provide recipient identifying and status information in a response to the message to convey its to the switch.

47. A mobile device as claimed in claim 46, wherein the status information comprises at least one of a timestamp for when the response was sent from the mobile device, success or failure of the mobile device to receive the message, confirmation that the message was displayed at the mobile device, and confirmation that the response was one of multiple choices for responses provided in the message.

48. A mobile device as claimed in claim 40, wherein the processing device is programmed to customize handling of messages broadcast to different ones of the group addresses to which the mobile device belongs.