Methods and networks for dynamically changing an operational mode of node operations in a wireless node network

Patent metadata

Field	Value
Publication number	US-9769785-B2
Application number	US-201414489525-A
Country	US
Kind code	B2
Filing date	Sep 18, 2014
Priority date	Nov 29, 2013
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

Improved methods and networks of components are described for dynamically changing an operational mode of node operations in a wireless node network having at least a plurality of master nodes and a server. A method begins with a first master node detecting an environmental change related to the first master node, such as when the first master node loses reception of a location signal due to surrounding structure. In response to the detected environmental change, changing an operational mode for the first master node to a temporary ID node mode where the first master node no longer can self-determine its location. The first master node operating in the temporary ID node mode then notifies the server that the first master nodes is operating in the temporary ID node mode, and associates with a second master node.

First claim

What is claimed:

1. A method for dynamically changing an operational mode of node operations in a wireless node network having at least an ID node at a low level of the network, a plurality of master nodes at a middle level of the network, and a server at a high level of the network, wherein each of the master nodes includes location circuitry for self-determining its location based upon received location signals, the method comprising:
detecting, by a first of the master nodes, an environmental change related to the first of the master nodes;
in response to the detected environmental change, changing an operational mode for the first of the master nodes to a temporary ID node mode where the location circuitry for the first of the master nodes remains enabled but no longer detects the location signals as a result of the environmental change, the temporary ID node mode allowing the first of the master nodes to temporarily operate at the low level of the network;
notifying the server by the first of the master nodes that the first of the master nodes is operating in the temporary ID node mode; and
associating the first of the master nodes operating in the temporary ID node mode with a second of the master nodes as authorized by the server to establish a permitted connection between the first of the master nodes and the second of the master nodes.

2. The method of claim 1 , wherein the environmental change is an anticipated environmental change related to the first of the master nodes and that causes a loss of reception of the location signals by the location circuitry on the first of the master nodes.

3. The method of claim 1 , wherein the detected environmental change further comprises placement of at least the first of the master nodes within a container that impedes reception of the location signal by the first of the master nodes.

4. The method of claim 1 , wherein the temporary ID node mode allows the first of the master nodes to remain operable and communicate with the server while no longer being able to self-determine its location.

5. The method of claim 1 , wherein the step of associating the first of the master nodes operating in the temporary ID node mode with the second of the master nodes further comprises:
advertising by the first of the master nodes to the second of the master nodes regarding a request to connect with the second of the master nodes;
receiving a response from the second of the master nodes by the first of the master nodes operating in the temporary ID node mode; and
sending a reply to the second of the master nodes with information requested by the second of the master nodes in the response, the reply including at least a server established security credential that indicates the first of the master nodes and the second of the master nodes are permitted to connect and share data.

6. The method of claim 1 , wherein the changing step further comprises changing the operational mode for the first of the master nodes to the temporary ID node mode while the first of the master nodes remains in a communication relationship with the ID node.

7. The method of claim 6 further comprising the steps of receiving information by the first of the master nodes from the ID node, and forwarding the information to the second of the master nodes by the first of the master nodes operating in the temporary ID node mode via the permitted connection established in the associating step.

8. The method of claim 7 , wherein the forwarded information is sensor data gathered by the ID node.

9. The method of claim 1 further comprising changing the operational mode for the first of the master nodes to a normal operational mode upon detecting a second environmental change related to the first of the master nodes, the normal operational mode being where the first of the master nodes detects the location signals again.

10. The method of claim 1 , wherein the step of detecting the environmental change related to the first of the master nodes comprises receiving, by the first of the master nodes, an advanced environment change notification from the server when the environmental change is an upcoming environmental change anticipated by the server; and
wherein the first of the master nodes completes an urgent task prior to the upcoming environmental change identified in the advanced environmental change notification.

11. The method of claim 1 , wherein the step of changing the operational mode for the first of the master nodes to the temporary ID node mode further includes altering a broadcast signature of the first of the master nodes to temporarily and actively identify the first of the master nodes to other master nodes as another ID node at the low level of the network.

12. A method for managing a dynamically changing operational mode of node operations in a wireless node network having at least an ID node at a low level of the network, a plurality of master nodes at a middle level of the network, and a server at a high level of the network, wherein each of the master nodes includes location circuitry for self-determining its location based upon received location signals, the method comprising:
receiving a notification by the server from a first of the master nodes reporting an environmental change related to the first of the master nodes and that the first of the master nodes has changed to a temporary ID node mode of operation where the location circuitry for the first of the master nodes remains enabled but no longer detects the location signals as a result of the environmental change;
recording a logical change of the first of the master nodes to be operating in the temporary ID node mode as a result of the environmental change; and
transmitting a server established security credential to authorize the first of the master nodes operating in the temporary ID node mode to associate with a second of the master nodes as part of establishing a permitted connection between the first of the master nodes and the second of the master nodes.

13. The method of claim 12 , wherein the environmental change comprises an anticipated environmental change related to the first of the master nodes and that causes a loss of reception of the location signals by the location circuitry on the first of the master nodes.

14. The method of claim 13 , wherein the anticipated environmental change comprises an adverse RF environment anticipated to be exposed to the first of the master nodes.

15. The method of claim 12 further comprising the step of updating context data consistent with the environmental change.

16. The method of claim 12 , wherein the temporary ID node mode allows the first of the master nodes to remain operable and communicate with the server while no longer being able to self-determine its location.

17. The method of claim 16 , wherein the environmental change results from movement of the first of the master nodes to be within a container that impedes reception of the location signal by the first of the master nodes.

18. The method of claim 12 further comprising the step of receiving information from the second of the master nodes as forwarded information from the first of the master nodes when operating in the temporary ID node mode.

19. The method of claim 18 , wherein the forwarded information is sensor data.

20. The method of claim 12 further comprising recording another logical change of the first of the master nodes back to a normal operational mode as a result of a second environmental change related to the first of the m

Assignees

• Fedex Corp Services Inc

Inventors

• Skaaksrud Ole-Petter
• Hollahan Terence
• Benton Steven

Classifications

• G01S2205/01

  specially adapted for specific applications · CPC title

• H04W12/08

  Access security · CPC title

• H04W12/06

  Authentication · CPC title

• G01S5/14

  Determining absolute distances from a plurality of spaced points of known location · CPC title

• G01S5/0289

  of multiple transceivers, e.g. in ad hoc networks · CPC title