Method for dynamic sensor network processing
View Patent ↗Described are a method and a sensor aware network for dynamic processing of sensor data. Network context data are inserted into data packets from sensors or local sensor networks coupled to the sensor aware network. Sensor aware nodes in the sensor aware network can read the context data and can respond by performing specific network actions. The sensor data and network context data are provided to one or more application nodes. The sensor data and network context data can be stored in a database and later searched according to the network context data. Advantageously, sensor data flows can be treated differently by the sensor aware network, the application and the user, depending on the type of sensor data and the actual data values. Thus critical responses to certain sensor data flows can be implemented more efficiently than otherwise possible using conventional network configurations.
1. A sensor aware network comprising:
a first sensor aware node configured to receive sensor data and to generate a data packet for transmission over the sensor aware network, the data packet having a packet header and a payload comprising network context data and the sensor data, the network context data being determined in response to at least one rule provided by an application, wherein said rule requires access approval, wherein said network context data comprises at least one tag added to said payload by said first sensor aware node in accordance with said rule; and
a second sensor aware node configured to receive the generated data packet, wherein said second sensor aware node examines said payload to determine if network context data is present, and when network context data is present then performing a network action in response to the network context data, wherein said action comprises said sensor aware node changing routing information for said data packet, wherein said changing routing information for said data packet comprises modifying header information for said data packet to a desired destination according to the applicable rule and forwarding said data packet to a network node determined according to the network context data, and when network context data is not present then routing said generated data packet according to information in said header.
2. The sensor aware network of claim 1 wherein said rule requires that all network context data inserted into data packets include a node timestamp and an IP address.
3. A sensor aware network comprising:
a sensor adapted to generate sensor data in response to a sensor measurement;
a first sensor aware node configured to receive sensor data and to generate a data packet for transmission over the sensor aware network, the data packet having a packet header and a payload comprising network context data and the sensor data, the network context data being determined in response to at least one rule provided by an application, wherein said rule requires access approval, wherein said network context data comprises at least one tag added to said payload by said first sensor aware node in accordance with said rule; and
a second sensor aware node configured to receive the generated data packet, wherein said second sensor aware node examines said payload to determine if network context data is present, and when network context data is present then performing a network action in response to the network context data, wherein said action comprises said second sensor aware node changing routing information for said data packet, wherein said changing routing information for said data packet comprises modifying header information for said data packet to a desired destination according to the applicable rule and forwarding said data packet to a network node determined according to the network context data, and when network context data is not present then routing said generated data packet according to information in said header.
4. The sensor aware network of claim 3 further comprising a network command module to provide a policy to the first sensor network aware node, the policy having at least one rule used to determine the network context data.
5. The sensor aware network of claim 3 wherein the first sensor aware node is an access node.
6. The sensor aware network of claim 3 wherein the first sensor aware node is an aggregation node.
7. The sensor aware network of claim 3 wherein the network context data comprise sensor flow control information.
8. The sensor aware network of claim 3 wherein said rule requires that all network context data inserted into data packets include a node timestamp and an IP address.
9. A method of dynamic sensor network processing of a data packet, the method comprising:
receiving sensor data at a first sensor aware node; and
generating, at the first sensor network aware node, a data packet having a packet header and a data payload comprising network context data and the sensor data, the network context data being determined according to at least one rule, wherein said rule requires access approval, wherein said network context data comprises at least one tag added to said payload by said first sensor aware node in accordance with said rule;
receiving the data packet at a second sensor aware node; and
wherein said second sensor aware node examines said payload to determine if network context data is present, and if network context data is present then performing a network action in response to the network context data, wherein said network action comprises said second sensor aware node changing routing information for said data packet, wherein said changing routing information for said data packet comprises modifying header information for said data packet to a desired destination according to the applicable rule and forwarding said data packet accordingly to a network node determined according to the network context data, and when network context data is not present then routing said generated data packet according to information in said header.
10. The method of claim 9 wherein the sensor aware node is an access node.
11. The method of claim 9 wherein the sensor aware node is an aggregation node.
12. The method of claim 9 further comprising receiving the data packet at an application node.
13. The method of claim 12 further comprising performing an application action in response to the network context data received at the application node.
14. The method of claim 9 wherein the network context data is absent from the data payload in response to an application of the rule to the received sensor data.
15. The method of claim 9 further comprising performing a network action at a third sensor aware node in response to the receipt of the sensor data at the second sensor aware node.
16. The method of claim 15 wherein performing a network action at a third sensor aware node comprises modifying network context data in a data payload of a data packet received at the third sensor aware node.
17. The method of claim 9 wherein said rule requires that all network context data inserted into data packets include a node timestamp and an IP address.