Limiting message diffusion between mobile devices

• US 6,999,717 B2
• Filed: 02/28/2001
• Issued: 02/14/2006
• Est. Priority Date: 03/11/2000
• Status: Expired due to Fees

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Spratt, Michael P., Squibbs, Robert Francis
• Primary Examiner(s): Cumming, William D.
• Application Number:
  US09/796,204
• Publication Number:
  US 20010026552A1
• Time in Patent Office: 1,812 Days
• Field of Search: 455/403, 455/11.1, 455/561, 455/458, 455/552.1, 455/432.1, 455/410, 455/15, 455/432, 455/67.1, 455/7, 709/221, 370/390, 707/1
• US Class Current: 455/7
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• 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 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/10 Small scale networks; Flat hierarchical networks
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user
• CPC Class Codes: Y10S 707/99931 Database or file accessing

Abstract

Information with local relevance is diffused locally using mobile devices equipped with non-wired short-range communication means, the information being propagated from an originating point in messages passed from device to device in an unstructured way. The devices implement measures for limiting message propagation including controlling propagation of a message from a particular originating point (OP1) in dependence on the prominence of the occurrence of that originating point in a set of most recently received messages.

Claims

1. A method of locally diffusing information for presentation to users of mobile devices, the method involving propagating the information from an originating point in messages passed from mobile device to mobile device by non-wired short-range communication means of the mobile devices, the messages including source identifiers indicative of the originating point of the messages, and at least some of the mobile devices controlling propagation of a message by making a determination as to whether or not to propagate on the message in dependence on what proportion of messages in a set of most recently received messages, come from the same originating point as the message under consideration.

2. A method according to claim 1, wherein said set is defined by a receiving time window.

3. A method according to claim 1, wherein a message is not propagated on by said at least some of the mobile devices if the proportion of messages in said set that come from the same originating point as the message under consideration is below a predetermined threshold.

4. A method according to claim 1, wherein said messages passed on by the mobile devices do not specify target final destinations.

5. A mobile device for locally diffusing information in messages to other mobile devices for presentation to their users, the messages including source identifiers indicative of the originating point of the messages;

the mobile device comprising;

a message store;

a short-range wireless transceiver arranged to receives messages and stores them to said message store, and further arranged to transmit messages retrieved from the store;

an originating-point monitor arranged to monitor the originating points of a set of most recently received messages; and

a message-propagation controller arranged to controls onward propagation of a message by the short-range wireless transceiver by making a determination as to whether or not the message is to be propagated in dependence on what proportion of messages in said set of most recently received messages, come from the same originating point, as the message under consideration as monitored by the originating-point monitor.

6. A device according to claim 5, wherein said set is defined by a receiving time window known to the originating-point monitor.

7. A device according to claim 5, wherein the controller is arranged to inhibit propagation of a received message if the proportion of messages in said set that come from the same originating point as the message under consideration is below a predetermined threshold.

8. The device according to claim 5, wherein the short-range wireless transceiver is arranged to transmit on messages without specifying a target final destination.

9. A method of locally diffusing information for presentation to users of mobile devices, the method involving propagating the information from an originating point in messages passed from mobile device to mobile device by non-wired short-range communication means of the mobile devices, the messages including source identifiers indicative of the originating point of the messages, and at least some of the mobile devices controlling message propagation by not propagating on a received message if, in a set of most recently received messages, the percentage of messages that come from the same originating point as the message under consideration is below a predetermined threshold.

10. A method according to claim 9, wherein said messages passed on by the mobile devices do not specify target final destinations.

11. A mobile device that locally diffuses information in messages to other mobile devices for presentation to their users, the messages including source identifiers indicative of the originating point of the messages;

the mobile device comprising;

a message store;

a short-range wireless transceiver that receives messages and stores them to said message store, and that transmits messages retrieved from the store;

an originating-point monitor for monitoring the originating points of a set of most recently received messages; and

a message-propagation controller that controls onward propagation of a message by not propagating on that message if, in a set of most recently received messages, the percentage of messages that come from the same originating point as the message under consideration, as monitored by the originating-point monitor, is below a predetermined threshold.

12. The device according to claim 11, wherein the short-range wireless transceiver transmits on messages without specifying a target final destination.