GSM CELL BROADCAST SMS MESSAGE TRANSMISSION IN CDMA COMMUNICATION SYSTEMS

• US 20080186924A1
• Filed: 02/07/2008
• Published: 08/07/2008
• Est. Priority Date: 10/22/2002
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Uchida, Nobuyuki, Qu, Hai
• Granted Patent: US 8,750,255 B2
• Time in Patent Office: Days
• US Class Current: 370/335
• 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 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/12 Messaging; Mailboxes; Announcements
• CPC Class Codes: H04W 4/16 Communication-related supplementary services, e.g. call-transfer or call-hold
• CPC Class Codes: H04W 68/12 Inter-network notification
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

Techniques to send GSM CBS messages over a CDMA air interface. The encapsulation of a GSM CBS message in CDMA messages may be achieved using various schemes. An indication is provided at each of a number of pertinent layers to allow the terminals to determine whether a GSM CBS message or a CDMA broadcast SMS message was sent. These indications include (1) a value in a designated field or subfield of a Data Burst Message, (2) a new value for a Category field in a Service Category parameter of an SMS Broadcast Message, and (3) a new value for a Msg_Encoding field in a User Data subparameter of the SMS Deliver Message.

Claims

1. A computer-readable media including computer-executable instructions for receiving Cell Broadcast Short Message Service (CBS) messages in a CDMA communication system, the computer-executable instructions for performing the steps of:

receiving a CDMA message having encapsulated therein a broadcast SMS message;

processing a designated field or subfield of the CDMA message to determine whether the broadcast SMS message is a GSM CBS message or a CDMA broadcast SMS message; and

recovering the GSM CBS message from the CDMA message if the GSM CBS message is encapsulated in the CDMA message.

2. The computer-readable media of claim 1, wherein the designated field is an address length field of the CDMA message, and wherein the GSM CBS message and CDMA broadcast SMS message are distinguished by different values for the address length field.

3. The computer-readable media of claim 2, wherein a header portion of the GSM CBS message is carried in an address field of the CDMA message.

4. The computer-readable media of claim 1, wherein the designated subfield is a broadcast type subfield in an address field of the CDMA message, and wherein the GSM CBS message and CDMA broadcast SMS message arc distinguished by different values for the broadcast type subfield.

5. The computer-readable media of claim 1, wherein the designated field is a burst type field of the CDMA message, and wherein the GSM CBS message and CDMA broadcast SMS message are distinguished by different values for the burst type field.

6. The computer-readable media of claim 1, wherein the designated field is a language field for an address field of the CDMA message, and wherein the GSM CBS message and CDMA broadcast SMS message are distinguished by different ranges of value for the language field.

7. The computer-readable media of claim 1, wherein the CDMA message is a Data Burst Message in the CDMA system.

8. A computer-readable media including computer-executable instructions for processing Cell Broadcast Short Message Service (CBS) messages for transmission in a CDMA communication system, the computer-executable instructions for performing the steps of comprising:

forming a Data Burst Message to carry a GSM CBS message;

setting a designated field or subfield of the Data Burst Message to a value indicative of the GSM CBS message being carried in the Data Burst Message; and

broadcasting the Data Burst Message carrying the GSM CBS message to terminals.

9. The computer-readable media of claim 8, wherein the GSM CBS message is encapsulated in an SMS Deliver Message that is further encapsulated in an SMS Broadcast Message that is then encapsulated in the Data Burst Message.

10. A computer-readable media including computer-executable instructions for processing Cell Broadcast Short Message Service (CBS) messages for transmission in a CDMA communication system, the computer-executable instructions for performing the steps of comprising:

encapsulating a GSM CBS message in a CDMA SMS Deliver Message;

setting a message encoding field of the SMS Deliver Message to a value indicative of the GSM CBS message being carried in the SMS Deliver Message;

encapsulating the SMS Deliver Message in a CDMA SMS Broadcast Message; and

setting a service category parameter of the SMS Broadcast Message to a value indicative of the GSM CBS message being carried in the SMS Broadcast Message.

11. A computer-readable media of claim 10, wherein the SMS Broadcast Message is encapsulated in a Data Burst Message, and wherein a designated field or subfield of the Data Burst Message is set to a value indicative of the GSM CBS message being carried in the Data Burst Message.

12. A method for receiving a broadcast message from an incompatible communication system, comprising:

receiving a compatible short message service message including the broadcast message from the incompatible communication system therein; and

recovering the broadcast message from the compatible short message service message if the broadcast message is determined to be in the compatible message.

13. The method of claim 12, wherein the broadcast message is a Cell Broadcast Message Service (CBS) message.

14. The method of claim 13, wherein receiving a compatible short message service message further comprises receiving a compatible short message service message in a CDMA communication system.

15. The method of claim 12, wherein the broadcast message is encapsulated in the compatible short message service message.

16. The method of claim 15, wherein recovering the broadcast message comprises:

determining if the broadcast message is encapsulated in the compatible short message service message; and

unencapsulating the broadcast message from the compatible short message service message when the broadcast message is present.

17. A method for processing a broadcast message from an incompatible communication system for transmission in a communication system, comprising:

forming a compatible short message service message to carry the broadcast message from the incompatible communication system; and

broadcasting in the communication system the compatible short message service message carrying the broadcast message from the incompatible communication system.

18. The method of claim 17, wherein the broadcast message is a Cell Broadcast Message Service (CBS) message.

19. The method of claim 18, wherein the communication system is a CDMA communication system.

20. A terminal operative in a communication system to receive a broadcast message from an incompatible communication system, comprising:

a demodulator/decoder operative to process data samples and provide a compatible short message service message having encapsulated therein the broadcast from the incompatible communication system; and

a message processor operative to process the compatible short message service message to determine whether the broadcast message from the incompatible communication system is therein, and to recover the broadcast message from the compatible short message service message if the broadcast message is therein.

21. An apparatus for receiving a broadcast message from an incompatible communication system, comprising:

means for receiving a compatible short message service message including the broadcast message from the incompatible communication system therein; and

means for recovering the broadcast message from the compatible short message service message if the broadcast message is determined to be in the compatible message.

22. An apparatus for processing a broadcast message from an incompatible communication system for transmission in a communication system, comprising:

means for forming a compatible short message service message to carry the broadcast message from the incompatible communication system; and

means for broadcasting in the communication system the compatible short message service message carrying the broadcast message from the incompatible communication system.