Method for call setup using short data bursts

• US 7,787,440 B1
• Filed: 10/22/2002
• Issued: 08/31/2010
• Est. Priority Date: 10/22/2002
• Status: Active Grant

• Current Assignee: Sprint Spectrum LLC (Deutsche Telekom AG)
• Original Assignee: Sprint Spectrum LP (Deutsche Telekom AG)
• Inventors: Chaturvedi, Pawan, Zhou, Tong
• Primary Examiner(s): Moore, Jr.; Michael J
• Application Number:
  US10/277,465
• Time in Patent Office: 2,870 Days
• Field of Search: None
• US Class Current: 370/352
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04M 7/1235 where one of the core networks is a wireless network
• CPC Class Codes: H04M 7/126 Interworking of session control protocols
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 80/10 adapted for application session management, e.g. SIP [Session Initiation Protocol] connection management H04W76/00; arrangements for session management H04L67/14
• CPC Class Codes: H04W 88/12 Access point controller devices

Abstract

A first wireless device may connect to a wireless telecommunications network, and it may communicate with the wireless telecommunications network over an air interface signaling channel. The first wireless device may exchange messages with a second device, such as a wired device or a wireless device, in order to establish a session with the second device. The first wireless device may send or receive the messages over an air interface with its wireless telecommunications network using short data bursts.

Claims

1. A method for establishing a VoIP session between a first wireless device and a second wireless device, the method comprising:

sending a Session Initiation Protocol (SIP) request from the first wireless device to the second wireless device over a first air interface signaling channel to establish a Voice over Internet Protocol (VoIP) session that occurs on a first air interface traffic channel between the first and second wireless devices, wherein the first wireless device communicates with a first wireless network via a first air interface that includes the first air interface signaling channel and the first air interface traffic channel, wherein the first air interface signaling channel is shared by multiple wireless devices and carries communications that are used to establish the first air interface traffic channel, and wherein the first air interface traffic channel is dedicated for single use by the first wireless device and carries voice packets that are part of the VoIP session;

sending a resource request to a base station controller in the first wireless network over the first air interface signaling channel, thereby beginning a process of establishing the first air interface traffic channel for communicating with the first wireless network;

receiving a SIP response from the second wireless device over the first air interface signaling channel;

establishing the VoIP session without the first wireless device first establishing the first air interface traffic channel;

subsequent to said establishing the VoIP session, establishing the first air interface traffic channel with the first wireless network; and

the first wireless device communicating a voice packet with the second wireless device via the first air interface traffic channel.

2. A non-transitory computer readable medium having stored therein instructions for causing a central processing unit to execute the method of claim 1.

3. The method of claim 1, wherein the first wireless network is a CDMA network.

4. The method of claim 1, wherein the SIP request is a SIP INVITE message and the SIP response is a SIP OK message.

5. The method of claim 1, wherein the step of sending the SIP request to establish the VoIP session occurs before the step of sending a resource request to a base station controller.

6. The method of claim 1, wherein the step of sending the SIP request to establish the VoIP session occurs after the step sending a resource request to a base station controller.

21. The method of claim 1, wherein the SIP request is encapsulated in one or more PPP messages, and wherein the one or more PPP messages are encapsulated in one or more SDB messages and sent using short data bursts.

22. The method of claim 1, wherein the second wireless device communicates with a second wireless network via a second air interface that includes a second air interface signaling channel and a second air interface traffic channel.

7. A method for establishing a session between a first wireless device and a second wireless device, wherein the first wireless device communicates with a first wireless network via a first air interface that includes a first air interface signaling channel and a first air interface traffic channel and the second wireless device communicates with a second wireless network via a second air interface that includes a second air interface signaling channel and a second air interface traffic channel, the method comprising:

sending from the first wireless device to the second wireless device a request to establish a session between the first wireless device and the second wireless device, wherein the request is sent from the first wireless device to the first wireless network over the first air interface signaling channel using short data bursts, and wherein the request is a Session Initiation Protocol (SIP) INVITE message, wherein the SIP request is encapsulated in one or more PPP messages, and wherein the one or more PPP messages are encapsulated in one or more SDB messages, wherein the first air interface signaling channel is shared by multiple wireless devices and carries communications that are used to establish the first air interface traffic channel, and wherein the first air interface traffic channel is dedicated for single use by the first wireless device and data packets that are part of the session; and

establishing the session without both the first wireless device and the second wireless device first establishing the first air interface traffic channel or the second air interface traffic channel.

8. The method of claim 7, wherein the request is sent from the second wireless network to the second wireless device.

9. The method of claim 8, wherein the request is sent from the second wireless network to the second wireless device over the second air interface signaling channel using short data bursts.

10. The method of claim 7, further comprising:

the first wireless device receiving from the second wireless device a response to the request, wherein the response is sent from the first wireless network to the first wireless device over the first air interface signaling channel using short data bursts.

11. The method of claim 10, wherein the response is a Session Initiation Protocol (SIP) OK message.

12. The method of claim 10, wherein the response is sent from the second wireless device to the second wireless network.

13. The method of claim 12, wherein the response is sent from the second wireless device to the second wireless network over the second air interface signaling channel using short data bursts.

14. The method of claim 7, wherein the first and second wireless networks are CDMA networks.

15. The method of claim 7, wherein the request is a request to establish a Voice over Internet Protocol (VoIP) session between the first wireless device and the second wireless device.

16. The method of claim 7, wherein the request is a request to establish a push-to-talk session between the first wireless device and the second wireless device.

17. The method of claim 7, further comprising:

establishing the first air interface traffic channel for communicating with the first wireless network; and

the first wireless device communicating with the second wireless device via the first air interface traffic channel.

18. The method of claim 17, further comprising:

beginning to establish the first air interface traffic channel before sending the request.

19. The method of claim 17, further comprising:

beginning to establish the first air interface traffic channel after sending the request.

20. A non-transitory computer readable medium having stored therein instructions for causing a central processing unit to execute the method of claim 7.