Ad hoc wireless networking

• US 8,681,655 B2
• Filed: 02/11/2011
• Issued: 03/25/2014
• Est. Priority Date: 10/26/2007
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Alam, Mohammad Shabbir, Madhavan, Poovanpilli G., Agiwal, Ankur, Mittal, Sharad, Zan, Xinyan, Li, Frank, Deng, Zhong, Stewart, John-Paul M.
• Primary Examiner(s): Pham, Chi
• Assistant Examiner(s): HOM, SHICK C
• Application Number:
  US13/025,454
• Publication Number:
  US 20110134799A1
• Time in Patent Office: 1,138 Days
• Field of Search: None
• US Class Current: 370/254
• CPC Class Codes: H04W 28/065 using assembly or disassembly of packets
• CPC Class Codes: H04W 80/06 Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless transmission control protocol/Internet protocol [TCP/IP] or user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A software architecture providing ad hoc wireless networking capabilities. The software architecture may be compatible with wireless devices, such as UWB devices operating according to the WLP communication protocol. The software architecture may include user mode and kernel mode modules, and may include a multiplexing driver framework to enable system connection to multiple ad hoc networks.

Claims

1. A method of enabling a computer system to connect to a plurality of ad hoc wireless networks using a same physical adapter, the ad hoc wireless networks of the plurality of ad hoc wireless networks each implementing an ad hoc network protocol for communications, the method comprising:

binding a driver to the physical adapter, the physical adapter configured to receive data from each of a plurality of available ad hoc networks;

using the driver to create an interface between the physical adapter and at least one upper layer networking stack for each of at least two of the available ad hoc networks simultaneously; and

sending an outgoing data packet from the at least one upper layer networking stack to the driver and using the driver to;

(i) add a network protocol frame header to the outgoing data packet; and

(ii) forward the data packet over the physical adapter.

2. The method of claim 1, wherein the interface comprises a plurality of interfaces comprising at least one interface between the physical adapter and the at least one upper layer networking stack for each of the at least two of the available ad hoc networks, and wherein at least one interface of the plurality of interfaces created by the driver is a virtual interface.

3. The method of claim 2, further comprising using the driver to maintain mapping information mapping the at least one virtual interface to the physical adapter.

4. The method of claim 2, wherein the at least one virtual interface emulates an IEEE Ethernet connection to the at least one upper layer networking stack.

5. The method of claim 4, wherein the upper layer networking stack comprises a TCP/IP networking component.

6. The method of claim 1, wherein the driver is a kernel mode module, and wherein the method further comprises using the driver to expose a set of private interfaces with which user mode modules of the computer system interact.

7. The method of claim 1, further comprising receiving an incoming network protocol data packet on the physical adapter and using the driver to examine a network protocol frame header on the incoming network protocol data packet and extract a network identification tag.

8. A computer-readable storage device having computer-executable instructions stored thereon, the computer-executable instructions configured to, when executed by at least one processor, cause performance of a method comprising:

binding a driver to a physical adapter of an electronic device;

identifying a plurality of available ad hoc networks;

using the driver to create an interface between the physical adapter and at least one upper layer networking stack simultaneously for each of at least two available ad hoc networks of the identified plurality of available ad hoc networks, thus resulting in creation of at least two interfaces;

adding a network protocol frame header to an outgoing data packet using the driver; and

sending the outgoing data packet from the at least one upper layer networking stack over the physical adapter via an interface of the at least two interfaces.

9. The computer-readable storage device of claim 8, wherein at least one of the at least two interfaces created by the driver is a virtual interface.

10. The computer-readable storage device of claim 9, wherein the method further comprises using the driver to generate mapping information mapping the at least one virtual interface to the physical adapter.

11. The computer-readable storage device of claim 10, wherein the at least one virtual interface emulates an IEEE Ethernet connection to the at least one upper layer networking stack.

12. The computer-readable storage device of claim 8, wherein the method further comprises receiving on the physical adapter an incoming network protocol data packet and extracting a network identification tag.

13. The computer-readable storage device of claim 8, wherein the driver is a kernel mode module, and wherein the method further comprises using the driver to expose a set of private interfaces with which user mode modules interact.

14. A computer system configured to connect to an ad hoc network, the computer system comprising:

a memory configured to store computer-readable instructions; and

at least one processor configured to execute the computer-readable instructions, the computer-executable instructions including instructions for performing operations, the operations comprising;

using a driver to create multiple simultaneous interfaces between a physical adapter of the computer system and a TCP/IP layer by creating an interface between the physical adapter and the TCP/IP layer for each of at least two available ad hoc networks simultaneously;

receiving an incoming data packet on the physical adapter;

extracting from the incoming data packet a network protocol frame header including a network identification tag identifying a first ad hoc network of the at least two available ad hoc networks to which the incoming data packet belongs; and

directing the incoming data packet to one of the multiple simultaneous interfaces to which the first ad hoc network corresponds.

15. The computer system of claim 14, wherein at least one of the multiple simultaneous interfaces created by the driver is a virtual interface.

16. The computer system of claim 15, wherein the operations further comprise using the driver to generate mapping information mapping the virtual interface to the physical adapter.

17. The computer system of claim 14, wherein the operations further comprise using the driver to add a network protocol frame header to an outgoing data packet and forwarding the outgoing data packet over the physical adapter.

18. The computer system of claim 14, wherein the incoming data packet conforms to a wireless networking protocol.

19. The computer system of claim 14, wherein the computer-readable instructions are part of a kernel mode module of the driver.

20. The computer system of claim 14, wherein the computer system comprises a laptop computer which includes the at least one processor.