Methods for synchronization of communications between a circuit switched network and a packet data network
OwnerJames Mathis, Matthew Keller +2inventors
InventorsJames Mathis, Matthew Keller, Ross Lillie, Donald Newberg
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Abstract
Methods for synchronization in a RF communication system are disclosed. At a mobile device, frames are received from a circuit switched network wherein at least one frame has a first timestamp wherein the first timestamp is related to a time base for a source of communications. Packets are also received from a packet data network wherein each packet comprises a second timestamp from the time base. Frames and packets are sequenced based upon the first timestamp and the second timestamp.
Claims20
A method for synchronization in a RF communication system comprising the steps of:
- at a mobile device:
- receiving frames from a circuit switched network wherein at least one frame has a first timestamp wherein the first timestamp is related to a time base for a source of communications;
- receiving packets from a packet data network wherein each packet comprises a second timestamp from the time base;
- and
- sequencing payload of the frames and packets based upon the first timestamp and the second timestamp.
A method for synchronization in a RF communication system comprising the steps of:
- initializing a time base to be used for a first communication stream and a second communication stream;
- creating sequence information comprising the time base;
- inserting the sequence information into each packet of the second communication stream and frames of the first communication stream where at least one frame carries the sequence information;
- transmitting the first communication stream and the second communication stream to a mobile device of the RF communication system;
- and
- ordering each frame of the first communication stream and each packet of the second communication stream based upon the sequence information.
A method for synchronizing voice with media in a RF communication system comprising the steps of:
- initializing a time base to be used for a APCO communication stream and a WLAN communication stream;
- creating timestamp information comprising the time base;
- inserting the timestamp information into each WLAN packet of the WLAN communication stream and some APCO frames of the APCO communication stream where at least one APCO frame carries the timestamp information;
- transmitting the ACPO communication stream and the WLAN communication stream to a mobile device of the RF communication system;
- and
- sequencing payload of each APCO frame of the APCO communication stream and each WLAN packet of the WLAN communication stream based upon the timestamp information.
Dependencies are inferred from the claim text.