WIRELESS NETWORK INTERFACE WITH INFRASTRUCTURE AND DIRECT MODES

• US 20120158839A1
• Filed: 12/16/2010
• Published: 06/21/2012
• Est. Priority Date: 12/16/2010
• Status: Abandoned Application

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: HASSAN, AMER A., Desai, Mitesh K., Sankaranarayan, Mukund, Filgueiras, Henrique, Clear, Mark
• Application Number:
  US12/970,034
• Publication Number:
  US 20120158839A1
• Time in Patent Office: Days
• US Class Current: 709/204
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

An architecture for a computing device to enable the computing device to support peer-to-peer communications using a wireless radio also configured for infrastructure-based communication. The architecture includes a driver for the wireless radio that supports ports for communication in accordance with the peer-to-peer protocol. A port may act as a control port through which action frames that control the formation of a peer-to-peer group may be sent and received. One or more other ports may be used for exchanging data with other devices in the group. Each of these ports may be configured in accordance with its role in the group, such that each port may be configured for operation as a group owner or a client. Additionally, after establishing a group, the control port may be used as a side channel for controlling a device in a group associated with another port.

Claims

1. A computing device (310), comprising:

a radio (354) for wireless communication;

a driver (344) for controlling the radio to implement a plurality of ports (382, 284, 386, 388, 390), the plurality of ports comprising;

at least one port for operation in an infrastructure mode (382, 384);

a control port for controlling a peer-to-peer connection (386); and

at least one peer-to-peer communication port (388, 390); and

an operating system (320) configured to interact with the driver for establishing a peer-to-peer connection using the control port and to communicate over the peer-to-peer connection through the peer-to-peer communication port.

2. The computing device of claim 1, wherein the operating system is further configured for sending commands through the control port to control audio/visual characteristics (736) of a display device (830) coupled to the computing device over the peer-to-peer connection (832).

3. The computing device of claim 1, wherein:

the driver implements the control port by associating a Media Access Control (MAC) address (356A . . . 356E) with the control port and controlling the radio to transmit control frames associated with the MAC address of the control port.

4. The computing device of claim 3, wherein:

the control frames comprise public action frames and service discovery frames.

5. The computing device of claim 4, wherein:

the operating system interacts with the driver to establish a peer-to-peer connection by sending a command to the driver to create the peer-to-peer communication port (610).

6. The computing device of claim 5, wherein:

the operating system interacts with the driver to establish a peer-to-peer connection by sending a command to the driver to configure the peer-to-peer communication port for an operational role in the peer-to-peer communication.

7. The computing device of claim 6, wherein:

the operating system sends a command to the driver to configure the peer-to-peer communication port for an operational role in the peer-to-peer communication by specifying a role comprising one of a group owner or a client.

8. The computing device of claim 7, wherein:

the at least one peer-to-peer communication port is configured for operation in accordance with a WI-FI Direct protocol; and

the at least one port operating in infrastructure mode is configured for operation in accordance with a WI-FI infrastructure-mode protocol; and

the control port is configured for operation at a lower bit rate than each of the at least one peer-to-peer communication ports.

9. The computing device of claim 1, wherein the operating system is further configured for sending commands through the control port to identify the number of peer-to-peer communication ports.

10. The computing device of claim 1, wherein the operating system is further configured for sending commands through the control port to identify role of peer-to-peer communication ports whether Group Owner or Client.

11. A method of operating a computing device (310) having a wireless radio (354) controlled by a driver (344), the method comprising:

with at least one processor;

providing a command to the driver to supply a control port for establishing wireless communication using a peer-to-peer protocol (414);

sending through the control port at least one command for the driver to control the wireless radio to send an action frame (510, 518, 524);

receiving through the control port a reply to one or more of the at least one commands for the driver to control the wireless radio to send an action frame (512, 522);

based on the reply to the one or more of the at last one commands, determining to establish a wireless connection with at least one remote device and a role for the computing device in the wireless connection (522);

providing at least one command to the driver to supply a communication port and to configure the communication port for the determined role of the computing device in the wireless connection (622,624); and

exchanging data packets with the at least one remote device through the communication port (634).

12. The method of claim 11, wherein:

the remote device comprises a display device (830);

the data packets comprise audio/video content; and

the method further comprises sending through the control port commands to control at least one audio/visual characteristic of presentation of the audio/visual context on the display device (736).

13. The method of claim 11, wherein:

determining the role for the computing device comprises selecting a role as a group owner or a client (620).

14. The method of claim 12, wherein:

the wireless connection comprises a first wireless connection;

the method further comprises;

interacting with the driver through a station port, the interaction comprising forming a second wireless connection, the second wireless connection being with an access point (840), wherein communication is conducted concurrently over the first wireless connection and the second wireless connection.

15. The method of claim 12, wherein:

the wireless connection comprises a first wireless connection; and

the method further comprises;

interacting with the driver through the control port to establish a second wireless connection with a set of remote devices and determine a role for the computing device in the second wireless connection;

providing at least one command to the driver to supply a second communication port and to configure the communication port for the determined role of the computing device in the second wireless connection; and

exchanging data packets with the second set of remote devices through the second communication port.

16. The method of claim 15, wherein:

exchanging data packets with the second set of remote devices occurs concurrently with exchanging data packets with the at least one remote device.

17. At least one computer-readable storage medium comprising computer-executable instructions that, when executed, implement a driver for controlling a wireless radio, the driver comprising an operating system interface, and the computer-executable instructions of the driver for:

receiving through the interface a request to establish wireless communication in accordance with a peer-to-peer communication protocol;

associating a first MAC address with a control port for the communication in accordance with a peer-to-peer communication protocol;

receiving through the interface one or more requests related to forming a group;

in response to the one or more requests related to forming a group;

controlling the wireless radio to transmit control frames; and

reporting responses to the control frames through the interface, the

responses being associated with the control port;

receiving through the interface, a request to establish a second port for communication in accordance with the peer-to-peer communication protocol;

associating a second MAC address with the second port;

receiving through the interface data packets for communication in accordance with the peer-to-peer communication protocol, the data packets being received in association with the second port; and

providing through the interface data packets received from the wireless radio and having the second MAC address, the data packets being provided with an association with the second port;

18. The computer-readable storage medium of claim 17, wherein the computer-executable instructions of the driver are further for:

receiving through the interface a request to configure the second port for communication in accordance with any one of at least two roles within a communication session.

19. The computer-readable storage medium of claim 18, wherein the at least two roles comprise a group owner and a client.

20. The computer-readable storage medium of claim 17, wherein:

the computer-executable instructions of the driver are further for establishing at least one third port for communication in accordance with an infrastructure communication protocol; and

the third port and the second port operate concurrently to support concurrent connections to an infrastructure network and a peer-to-peer group using the same wireless radio.