UMTS RIL extension

• US 20060222009A1
• Filed: 03/29/2005
• Published: 10/05/2006
• Est. Priority Date: 03/29/2005
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Yao, Richard Yuqi, Xu, Pung Pengyang, Guo, Zihua, Elliott, Steven, Wang, Yidong
• Granted Patent: US 7,821,974 B2
• Time in Patent Office: Days
• US Class Current: 370/469
• CPC Class Codes: H04W 92/06 between gateways and public network devices

Abstract

A UMTS extension to the GSM/GPRS RIL is disclosed. The UTMS RIL provides an API set interface for the support of UMTS features such as 3G QoS, secondary PDP contexts call, priority service, voice group call and voice broadcast services, etc. The API set is based on the UMTS AT command interface as defined in 3GPP specification TS 27.007. The architecture of the UMTS RIL is designed as a standard interface with APIs and callback mechanisms that can be used across different platforms and multi-radio hardware such as GSM, GPRS, WCDMA, and HSDPA. The UTMS RIL may enable various applications running on mobile platforms in 2G, 2.5G, and 3G cellular radio stacks to issue commands without knowledge of underlying radio hardware structure.

Claims

1. A radio interface layer (RIL) for interfacing a computer to a telephony radio on a mobile network, the RIL comprising:

a proxy layer;

a driver layer; and

a set of application programming interfaces (APIs) for abstracting out multiple radio technologies without knowledge of the telephony radio or mobile network, said set of APIs comprising APIs for performing UMTS-related functions;

wherein, when the proxy layer receives a call at a first interface to one of the set of APIs, the proxy layer transforms the API call to a command understood by the driver layer and sends the command to the driver layer at a second interface, and

wherein the driver layer receives the command at the second interface and determines at least one standard telephony radio command corresponding to the called API and sends the telephony radio command to the telephony radio at a third interface.

2. The RIL of claim 1, wherein the proxy layer is hardware independent.

3. The RIL of claim 2, wherein the driver layer is hardware specific.

4. The RIL of claim 1, wherein the UMTS-related functions include WCDMA-related functions.

5. The RIL of claim 1, wherein the UMTS-related functions include HSDPA-related functions.

6. The RIL of claim 1, further comprising a set of APIs for performing GSM-related functions.

7. The RIL of claim 1, further comprising a set of APIs for performing GPRS-related functions.

8. The RIL of claim 1, wherein the set of APIs include UMTS packet domain APIs.

9. The RIL of claim 1, wherein the set of APIs include call control and network service APIs.

10. The RIL of claim 1, wherein the set of APIs include voice group call service and voice broadcast service APIs.

11. A method of communicating between a module and a radio comprising:

generating a radio interface layer (RIL) API call at one of a plurality of modules to perform a UMTS-related function;

sending the RIL API call to a proxy at a first interface;

at the proxy, converting the RIL API call to a command understood by a radio driver;

transmitting the radio driver command from the proxy to the radio driver at a second interface;

transmitting a radio command from the radio driver to the radio at a third interface; and

performing the UMTS-related function at the radio.

12. The method of claim 11, wherein the UMTS-related function includes 3G QoS.

13. The method of claim 11, wherein the UMTS-related function includes secondary PDP context.

14. The method of claim 11, wherein the UMTS-related function includes 2G and 3G switching.

15. The method of claim 11, wherein the UMTS-related function includes voice group call service.

16. The method of claim 11, wherein the UMTS-related function includes voice broadcast call service.

17. The method of claim 11, wherein the proxy is hardware independent and the driver is hardware specific.

18. A radio interface layer (RIL) of a telephone for facilitating communications between an application program module and a radio, comprising:

a proxy layer for communicating with the application program module at a first interface; and

a driver layer at a second interface,

wherein the proxy layer provides an API on the first interface for receiving application program calls to perform a UMTS-related function and wherein the proxy layer transforms the API calls to an input/output control (IOCTL) code and sends the IOCTL code to the driver layer at the second interface, and

wherein the driver layer communicates with the proxy layer at the second interface and the radio at a third interface, the driver layer receiving an IOCTL code at the second interface and transforming the IOCTL code into a command understood by the radio to perform the UMTS-related function and sending the command at the third interface.

19. The RIL of claim 18, wherein the command is an AT command based on 3GPP specification TS 27.007.

20. The RIL of claim 18, wherein the command is associated with a private API set defined by the radio manufacturer.