CALL ESTABLISHMENT AND MAINTENANCE IN A WIRELESS NETWORK

• US 20100329224A1
• Filed: 05/27/2010
• Published: 12/30/2010
• Est. Priority Date: 07/14/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Balasubramanian, Srinivasan
• Granted Patent: US 10,447,557 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04L 41/0253 using browsers or web-pages for accessing management information
• CPC Class Codes: H04L 41/0806 for initial configuration or provisioning, e.g. plug-and-play
• CPC Class Codes: H04L 41/5054 Automatic deployment of services triggered by the service manager, e.g. service implementation by automatic configuration of network components
• CPC Class Codes: H04L 43/0847 Transmission error
• CPC Class Codes: H04L 43/0852 Delays
• CPC Class Codes: H04L 43/087 Jitter
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

Techniques to configure quality of service (QoS) and utilize radio resources for a call in a WLAN are described. In an aspect, a station ensures that an access point in the WLAN is suitable for receiving service prior to performing registration to receive services via the WLAN. In another aspect, the station first requests for radio resources for traffic flows, then requests for radio resources for signaling flows, and sends signaling as best effort traffic if radio resources are not granted for the signaling flows. In yet another aspect, the station aggregates QoS for multiple applications and requests for radio resources based on the aggregated QoS. In yet another aspect, the station releases extra radio resources corresponding to the difference between the QoS granted by the WLAN and the QoS proposed by a remote terminal for the call. In yet another aspect, the station requests for the same QoS or lower from a new access point during handoff.

Claims

1. An apparatus comprising:

at least one processor configured to detect for access points in a wireless local area network (WLAN), to determine whether any detected access point is suitable for receiving service, and to perform service registration after determining a suitable access point for receiving service; and

a memory coupled to the at least one processor.

2. The apparatus of claim 1, wherein the at least one processor is configured to determine that an access point is suitable for receiving service if a frame error rate (FER) for beacon frames received from the access point is below an FER threshold.

3. The apparatus of claim 1, wherein the at least one processor is configured to determine that an access point is suitable for receiving service if a particular percentage of received signal strength indicator (RSSI) measurements for the access point is above an RSSI threshold.

4. The apparatus of claim 1, wherein the at least one processor is configured to determine that an access point is suitable for receiving service based on measurements obtained for the access point for a time period longer than one second.

5. The apparatus of claim 1, wherein the at least one processor is configured to register for best effort service if a frame error rate (FER) for the suitable access point is below a first FER threshold, and to register for Voice-over-Internet Protocol (VoIP) service if the FER for the suitable access point is below a second FER threshold lower than the first FER threshold.

6. The apparatus of claim 5, wherein the at least one processor is configured to de-register for the best effort service if the FER for the suitable access point exceeds a third FER threshold higher than the first FER threshold, and to de register for the VoIP service if the FER for the suitable access point exceeds a fourth FER threshold higher than the second FER threshold.

7. The apparatus of claim 1, wherein the at least one processor is configured to perform service registration by registering with IP Multimedia Subsystem (IMS).

8. A method comprising:

detecting for access points in a wireless local area network (WLAN);

determining whether any detected access point is suitable for receiving service; and

performing service registration after determining a suitable access point for receiving service.

9. The method of claim 8, wherein the determining whether any detected access point is suitable for receiving service comprises

determining that an access point is suitable for receiving service if a frame error rate (FER) for beacon frames received from the access point is below an FER threshold.

10. The method of claim 8, wherein the performing service registration comprises

registering for best effort service if a frame error rate (FER) for the suitable access point is below a first FER threshold, and

registering for Voice-over-Internet Protocol (VoIP) service if the FER for the suitable access point is below a second FER threshold lower than the first FER threshold.