GSM cell broadcast SMS message transmission in CDMA communication systems
AssigneeQUALCOMM Incorporated
InventorsHai Qu, Nobuyuki Uchida
Life of this patent
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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.
Claims20
A method for receiving Cell Broadcast Short Message Service (CBS) messages in a CDMA communication system, comprising:
- 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.
A method for processing Cell Broadcast Short Message Service (CBS) messages for transmission in a CDMA communication system, 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.
A method for processing Cell Broadcast Short Message Service (CBS) messages for transmission in a CDMA communication system, 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.
A terminaoperative to receive Cell Broadcast Short Message Service (CBS) messages in a CDMA communication system, comprising:
- a demodulator/decoder operative to process data samples and provide a CDMA message having encapsulated therein a broadcast SMS message;
- and
- a message processor operative to process 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 to recover the GSM CBS message from the CDMA message if the GSM CBS message is encapsulated in the CDMA message.
An apparatus operative to receive Cell Broadcast Short Message Service (CBS) messages from a CDMA communication system, comprising:
- means for receiving a CDMA message having encapsulated therein a broadcast SMS message;
- means for 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
- means for recovering the GSM CBS message from the CDMA message if the GSM CBS message is encapsulated in the CDMA message.
A network entity operative to process Cell Broadcast Short Message Service (CBS) messages for transmission in a CDMA communication system, comprising:
- a buffer receive data for a GSM CBS message;
- and
- a message processor encapsulate the GSM CBS message in a CDMA SMS Deliver Message and to further encapsulate the SMS Deliver Message in a CDMA SMS Broadcast Message, wherein a message encoding field of the SMS Deliver Message and a service category parameter of the SMS Broadcast Message are set to values indicative of the OSM CBS message being carried in the SMS Deliver Message and the SMS Broadcast Message.
Dependencies are inferred from the claim text.