Call establishment and maintenance in a wireless network

• US 9,781,014 B2
• Filed: 05/27/2010
• Issued: 10/03/2017
• Est. Priority Date: 07/14/2006
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Balasubramanian, Srinivasan
• Primary Examiner(s): NGUYEN, DINH
• Application Number:
  US12/788,506
• Publication Number:
  US 20100329207A1
• Time in Patent Office: 2,686 Days
• Field of Search: 455436, 455437, 4554321, 4554323, 455434, 4554352, 455438, 455439, 455442, 4554522
• 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 select a media format based on a first quality of service (QoS) that is granted to the apparatus by a first access point in a wireless local area network, the first QoS being lower than an initial QoS requested by the apparatus from the first access point;

to communicate the selected media format with a remote terminal based on the first QoS;

to perform handoff from the first access point to a second access point in the wireless local area network;

to request for a QoS from the second access point that is limited to the first QoS or lower irrespective of whether a higher level of QoS for supporting the media format is available for allocation by the second access point to the apparatus, wherein the QoS requested from the second access point is further lower than, or equal to, a QoS granted to the remote terminal;

to receive a grant of the first QoS or lower from the second access point; and

to communicate with the remote terminal based on the first QoS or lower granted by the second access point to avoid causing the remote terminal to re-negotiate the QoS granted to the remote terminal; 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 receive the grant of the first QoS from the first access point.

9. The apparatus of claim 1, wherein the QoS requested from the second access point is lower than the first QoS.

3. A method of operating an apparatus, comprising:

selecting a media format based on a first quality of service (QoS) that is granted to the apparatus by a first access point in a wireless local area network, the first QoS being lower than an initial QoS requested by the apparatus from the first access point;

communicating the selected media format with a remote terminal based on the first QoS;

performing handoff from the first access point to a second access point in the wireless local area network;

requesting for a QoS from the second access point that is limited to the first QoS or lower irrespective of whether a higher level of QoS for supporting the media format is available for allocation by the second access point to the apparatus, wherein the QoS requested from the second access point is further lower than, or equal to, a QoS granted to the remote terminal;

receiving a grant of the first QoS or lower from the second access point; and

communicating with the remote terminal based on the first QoS or lower granted by the second access point to avoid causing the remote terminal to re-negotiate the QoS granted to the remote terminal.

4. The method of claim 3, further comprising:

receiving the grant of the first QoS from the first access point.

10. The method of claim 3, wherein the QoS requested from the second access point is lower than the first QoS.

5. An apparatus, comprising:

means for selecting a media format based on a first quality of service (QoS) that is granted to the apparatus by a first access point in a wireless local area network, the first QoS being lower than an initial QoS requested by the apparatus from the first access point;

means for communicating the selected media format with a remote terminal based on the first QoS;

means for performing handoff from the first access point to a second access point in the wireless local area network;

means for requesting for a QoS from the second access point that is limited to the first QoS or lower irrespective of whether a higher level of QoS for supporting the media format is available for allocation by the second access point to the apparatus, wherein the QoS requested from the second access point is further lower than, or equal to, a QoS granted to the remote terminal;

means for receiving a grant of the first QoS or lower from the second access point; and

means for communicating with the remote terminal based on the first QoS or lower granted by the second access point to avoid causing the remote terminal to re-negotiate the QoS granted to the remote terminal.

6. The apparatus of claim 5, further comprising:

means for receiving the grant of the first QoS from the first access point.

11. The apparatus of claim 5, wherein the QoS requested from the second access point is lower than the first QoS.

7. A non-transitory computer-readable medium comprising machine-executable code configured to cause an apparatus to perform operations for wireless communication, the non-transitory computer-readable medium comprising:

code for selecting a media format based on a first quality of service (QoS) that is granted to the apparatus by a first access point in a wireless local area network, the first QoS being lower than an initial QoS requested by the apparatus from the first access point;

code for communicating the selected media format with a remote terminal based on the first QoS;

code for performing handoff from the first access point to a second access point in the wireless local area network;

code for requesting for a QoS from the second access point that is limited to the first QoS or lower irrespective of whether a higher level of QoS for supporting the media format is available for allocation by the second access point to the apparatus, wherein the QoS requested from the second access point is further lower than or equal to a QoS granted to the remote terminal;

code for receiving a grant of the first QoS or lower from the second access point; and

code for communicating with the remote terminal based on the first QoS or lower granted by the second access point to avoid causing the remote terminal to re-negotiate the QoS granted to the remote terminal.

8. The non-transitory computer-readable medium of claim 7, further comprising:

code for receiving the grant of the first QoS from the first access point.

12. The non-transitory computer-readable medium of claim 7, wherein the QoS requested from the second access point is lower than the first QoS.