Powerline communication network analyzer

• US 9,379,888 B2
• Filed: 04/29/2014
• Issued: 06/28/2016
• Est. Priority Date: 12/06/2013
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Moreno, Francisco Javier, Rajkotia, Purva Rameshchandra, Tang, Phuoc Nhu
• Primary Examiner(s): Revak, Christopher
• Assistant Examiner(s): Savenkov, Vadim
• Application Number:
  US14/264,454
• Publication Number:
  US 20150163052A1
• Time in Patent Office: 791 Days
• Field of Search: 380/255
• US Class Current: 1/1
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines
• CPC Class Codes: H04L 9/0816 Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use

Abstract

A powerline communication (PLC) network analyzer can join a PLC network by authenticating and associating with a central coordinator of the PLC network. The network analyzer can receive an encryption key from the central coordinator and dissociate from the PLC network. The network analyzer can capture and decrypt network traffic from the PLC network while remaining dissociated. The network analyzer can also create one or more virtual stations for the PLC network. The virtual stations can join the PLC network through the central coordinator and generate network traffic for the PLC network.

Claims

1. A method comprising:

receiving, by a network analyzer, an encryption key associated with a powerline communication (PLC) network from a central coordinator of the PLC network in response to the network analyzer joining the PLC network;

dissociating the network analyzer from the PLC network;

capturing, by the network analyzer, network traffic from the PLC network after dissociating from the PLC network; and

decrypting, by the network analyzer, the network traffic using the encryption key.

2. The method of claim 1, wherein the network traffic decrypted by the network analyzer includes unicast traffic that is not destined for the network analyzer.

3. The method of claim 1, wherein dissociating the network analyzer from the PLC network comprises receiving an acknowledgement from the central coordinator confirming the dissociation.

4. The method of claim 1, wherein the network traffic decrypted by the network analyzer includes a management message entry (MME) data packet that is destined for at least one member selected from the group consisting of:

a PLC station of the PLC network and the central coordinator.

5. The method of claim 1, wherein joining the PLC network comprises associating and authenticating the network analyzer with the central coordinator.

6. The method of claim 1, wherein the network analyzer is configured to implement at least one member selected from the group consisting of:

a HomePlug, a HomePlug AV, a HomePlug AV2, a HomePlug Green PHY, and an IEEE 1901 specification.

7. The method of claim 1, further comprising:

generating an instance of a virtual station at the network analyzer;

associating the virtual station with the central coordinator; and

generating additional network traffic associated with the virtual station between the network analyzer and the central coordinator.

8. The method of claim 7, wherein the additional network traffic generated by the network analyzer includes configuration information associated with the virtual station.

9. The method of claim 7, wherein associating the virtual station includes authenticating the virtual station with the central coordinator and receiving the encryption key from the central coordinator.

10. A network analyzer comprising:

a network interface configured to couple the network analyzer to a powerline medium; and

an analyzer module coupled with the network interface, the analyzer module configured to;

join a powerline communication (PLC) network through the powerline medium;

receive an encryption key associated with the PLC network;

dissociate from the PLC network;

capture network traffic from the PLC network after dissociating from the PLC network; and

decrypt the network traffic using the encryption key.

11. The network analyzer of claim 10, wherein the network traffic decrypted by the analyzer module includes unicast traffic that is not destined for the network analyzer.

12. The network analyzer of claim 10, wherein the analyzer module is configured to dissociate from the PLC network by receiving an acknowledgment from a central coordinator confirming the dissociation.

13. The network analyzer of claim 10, wherein the network traffic decrypted by the analyzer module includes a management message entry (MME) data packet transmitted by at least one member selected from the group consisting of:

a PLC station and a central coordinator.

14. The network analyzer of claim 10, wherein the encryption key includes at least one of a network membership key and a network encryption key.

15. The network analyzer of claim 10, wherein the network interface is configured to implement at least one member selected from the group consisting of a HomePlug, a HomePlug AV, a HomePlug AV2, a HomePlug Green PHY and an IEEE 1901 specification.

16. The network analyzer of claim 10, wherein the analyzer module is further configured to:

generate an instance of a virtual station at the network analyzer;

associate the virtual station with a central coordinator of the PLC network; and

generate additional network traffic associated with the virtual station between the network analyzer and the central coordinator.

17. The network analyzer of claim 16, wherein the analyzer module is further configured to associate the virtual station by authenticating with the central coordinator and receiving the encryption key.

18. A non-transitory machine-readable storage medium having machine executable instructions stored therein, the machine executable instructions comprising instructions to:

receive, by a network analyzer, an encryption key associated with a powerline communication (PLC) network from a central coordinator of the PLC network in response to the network analyzer joining the PLC network;

dissociate the network analyzer from the PLC network;

capture network traffic from the PLC network after dissociating from the PLC network; and

decrypt the network traffic using the encryption key.

19. The non-transitory machine-readable storage medium of claim 18, wherein the instructions to dissociate the network analyzer from the PLC network comprise instructions to receive an acknowledgement from the central coordinator confirming the dissociation.

20. The non-transitory machine-readable storage medium of claim 18, further comprise instructions to:

generate an instance of a virtual station at the network analyzer;

associate the virtual station with the central coordinator; and

generate additional network traffic associated with the virtual station between the virtual station and the central coordinator.