System and method of conforming wireless devices to worldwide regulations

• US 7,274,911 B2
• Filed: 09/06/2005
• Issued: 09/25/2007
• Est. Priority Date: 12/27/2002
• Status: Expired due to Fees

• Current Assignee: The Connectivity Patent Trust
• Original Assignee: Atheros Communications Incorporated (Qualcomm, Inc.)
• Inventors: Li, Sheung L.
• Primary Examiner(s): WEST, LEWIS G
• Application Number:
  US11/220,836
• Publication Number:
  US 20060019660A1
• Time in Patent Office: 749 Days
• Field of Search: 455/426.1, 455/426.2, 455/517, 455/518, 455/519, 455/41.2, 455/41.3, 455/41.1, 455/466, 455/454, 455/458, 455/552.1, 455/435.3
• US Class Current: 455/41.2
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

Countries or regions of the world can have different regulations governing wireless devices. A client product advantageously conforms to any regulatory environment, thereby allowing the client product to operate permissibly in any wireless network. The client product scans all frequencies at a predetermined interval for explicit information on regulation-conformant methods of operation, including frequencies and output power levels. If the client product receives a beacon, then the client product extracts relevant information from the beacon. Based on the relevant information, the client product operates in either the infrastructure mode or the ad hoc mode. On the other hand, if the client product does not receive explicit information, the client product detects other types of information and implicitly derives methods of operation in both infrastructure and ad hoc modes that conform to local regulations.

Claims

1. A method of conforming a wireless networking client product to a regulatory environment, the method comprising:

passively scanning all frequencies at a first interval for a beacon including explicit regulatory information;

if receiving a beacon including explicit regulatory information, then operating in one of an infrastructure mode and an ad hoc mode based on the explicit regulatory information;

if not receiving a beacon including explicit regulatory information, then determining whether an information element including implicit regulatory information is received; and

if receiving a beacon including implicit regulatory information, then operating in one of the infrastructure mode and the ad hoc mode based on the implicit regulatory information.

2. The method of claim 1, wherein the information element includes at least one of an ad hoc beacon, an incomplete beacon, a non-applicable beacon, and an unknown format beacon.

3. The method of claim 1, wherein if not receiving any beacon including explicit or implicit regulatory information and the client product is set in the infrastructure mode, then further including passively scanning all frequencies at a second interval for a beacon including explicit regulatory information.

4. An automatic startup process for a client product, the process ensuring permissible operation in an unknown regulatory environment, the process comprising:

passively scanning all frequencies at a first interval for a beacon;

if a beacon including explicit regulatory information is found, then determining whether the client product is set in one of an infrastructure mode and an ad hoc mode;

if set in the infrastructure mode, then associating in the infrastructure mode in a wireless network using the explicit regulatory information; and

if set in the ad hoc mode, then operating in the ad hoc mode in the wireless network using the explicit regulatory information.

5. The method of claim 4, wherein if the client product is set in the ad hoc mode, then further including

searching for an ad hoc beacon;

if an ad hoc beacon is found, then operating includes associating in the ad hoc mode in the wireless network using the explicit regulatory information; and

if an ad hoc beacon is not found, then operating includes initiating the ad hoc mode in the wireless network using the explicit regulatory information.

6. A computer-readable medium comprising instructions that, when run on a computer, allow a wireless device to operate in an unknown regulatory environment, the instructions comprising:

passively scanning all frequencies at a first interval for a beacon;

if receiving a beacon including explicit regulatory information, then operating in one of an infrastructure mode and an ad hoc mode based on the explicit regulatory information;

if receiving a beacon including implicit regulatory information, then operating in one of the infrastructure mode and the ad hoc mode based on the implicit regulatory information; and

if not receiving any beacon, then operating in the ad hoc mode at a frequency acceptable in substantially all regulatory environments.

7. The computer-readable medium of claim 6, the instructions further comprising:

wherein if not receiving any beacon and set to the infrastructure mode, then further including passively scanning all frequencies at a second interval for a beacon including explicit regulatory information and a beacon including implicit regulatory information before operating in the ad hoc mode.

8. The computer-readable medium of claim 6, the instructions further comprising:

wherein if receiving the beacon including explicit regulatory information, and the beacon is an 802.11d beacon, then further including operating in a set mode using a regulatory domain derived from the 802.11d beacon, the set mode including one of the infrastructure mode and the ad hoc mode.

9. A computer-readable medium comprising code, that when run on a processor, ensures permissible operation of a wireless device in an unknown regulatory environment, the code comprising:

code for passively scanning all frequencies at a first interval for a beacon;

code for extracting relevant information from a beacon including explicit regulatory information and operating in one of an infrastructure mode and an ad hoc mode based on the relevant information;

code for extracting relevant information from a beacon including implicit regulatory information and operating in one of the infrastructure mode and the ad hoc mode based on the relevant information; and

code for operating in the ad hoc mode at a usable frequency in substantially all regulatory environments if not receiving any beacon including explicit or implicit regulatory information.

10. The computer-readable medium of claim 9, further including code for passively scanning all frequencies at a second interval for any beacon including explicit or implicit regulatory information when the wireless device is set to the infrastructure mode.

11. The computer-readable medium of claim 9, wherein a beacon including implicit regulatory information is at least one of an ad hoc beacon, an incomplete beacon, a non-applicable beacon, and an unknown format beacon.

12. A system for ensuring permissible operation of a wireless device in an unknown regulatory environment, the system comprising:

means for passively scanning all frequencies at a first interval for a beacon;

means for extracting relevant information from a beacon including explicit regulatory information and operating in one of an infrastructure mode and an ad hoc mode based on the relevant information;

means for extracting relevant information from a beacon including implicit regulatory information and operating in one of an infrastructure mode and an ad hoc mode based on the relevant information; and

means, if not receiving any beacon, for operating in the ad hoc mode at a usable frequency in substantially all regulatory environments.