System and apparatus for performing broadcast and localcast communications
First Claim
1. A method of re-transmitting data transmitted over an FM subcarrier, comprising the steps of:
- receiving at a localcast transmitter the transmitted data;
locally formatting the transmitted data for local-area wireless transmission;
wherein locally formatting the transmitted data includes encoding the transmitted data at a data encoder when retransmitting using a first transmission speed and bypassing the data encoder when retransmitting using a second transmission speed;
interleaving the locally formatted data that includes data encoded at the data encoder when retransmitting using the first transmission speed and data encoded through bypassing the data encoder when retransmitting using the second transmission speed;
wherein interleaving includes interleaving a first portion of the locally formatted data and a second portion of the locally formatted data over a broadcast frame that includes sub frames;
wherein the first portion is for transmission at a first latency and the second portion is for transmission at a second latency, the second latency being lower than the first latency; and
wherein each sub frame includes data associated with the first portion and data associated with the second portion that are interleaved together; and
retransmitting the interleaved locally formatted data from a localcast transmitter to a local area.
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Accused Products
Abstract
Described is a communication system including mobile communication devices. In the described system, the mobile devices may be wrist-worn watches such as are in common use today, except that the watches are specially configured to receive data in a “broadcast” mode and transmit and/or receive data in a “localcast” mode. The localcast mode includes the ability to transmit and receive data in a peer-to-peer fashion, allowing mobile devices to communicate directly with each other. The ability to combine two of these communication modes in a small, integrated and hence inexpensive and low-power package provides many advantages over existing personal communication device solutions.
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Citations
20 Claims
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1. A method of re-transmitting data transmitted over an FM subcarrier, comprising the steps of:
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receiving at a localcast transmitter the transmitted data; locally formatting the transmitted data for local-area wireless transmission;
wherein locally formatting the transmitted data includes encoding the transmitted data at a data encoder when retransmitting using a first transmission speed and bypassing the data encoder when retransmitting using a second transmission speed;interleaving the locally formatted data that includes data encoded at the data encoder when retransmitting using the first transmission speed and data encoded through bypassing the data encoder when retransmitting using the second transmission speed;
wherein interleaving includes interleaving a first portion of the locally formatted data and a second portion of the locally formatted data over a broadcast frame that includes sub frames;
wherein the first portion is for transmission at a first latency and the second portion is for transmission at a second latency, the second latency being lower than the first latency; and
wherein each sub frame includes data associated with the first portion and data associated with the second portion that are interleaved together; andretransmitting the interleaved locally formatted data from a localcast transmitter to a local area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of re-transmitting data transmitted over an FM subcarrier, comprising:
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receiving at a localcast transmitter broadcast data over an FM subcarrier; locally formatting the broadcast data for local-area wireless transmission, including encoding the broadcast data at a data encoder when the locally formatted data is to be retransmitted using a first transmission speed mode and bypassing the data encoder when the locally formatted data is to be retransmitted using a second transmission speed mode; interleaving the locally formatted data that includes data encoded at the data encoder when retransmitting using the first transmission speed and data encoded through bypassing the data encoder when retransmitting using the second transmission speed;
wherein interleaving includes interleaving a first portion of the locally formatted data and a second portion of the locally formatted data over a broadcast frame that includes sub frames;
wherein the first portion is for transmission at a first latency and the second portion is for transmission at a second latency, the second latency being lower than the first latency; and
wherein each sub frame includes data associated with the first portion and data associated with the second portion that are interleaved together; andretransmitting the locally formatted data from the localcast transmitter to a mobile device. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An apparatus for re-broadcasting data transmitted over an FM subcarrier, comprising:
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an antenna assembly configured to be tuned in response to a scheduled message reception; a broadcast transmitter that is arranged to broadcast data over the FM subcarrier; a localcast transmitter that is arranged to receive the broadcast data and locally format the broadcast data for local-area wireless transmission, including encoding the broadcast data at a data encoder before the localcast transmitter transmits the locally formatted data using a first transmission speed mode, and bypassing the data encoder when the localcast transmitter transmits the locally formatted data in a second transmission speed mode;
wherein the local cast transmitter is further arranged to interleave the locally formatted data that includes data encoded at the data encoder when retransmitting using the first transmission speed and data encoded through bypassing the data encoder when retransmitting using the second transmission speed;
wherein encoding includes interleaving a first portion of the locally formatted data and a second portion of the locally formatted data over a broadcast frame that includes sub frames;
wherein the first portion is for transmission at a first latency and the second portion is for transmission at a second latency, the second latency being lower than the first latency; and
wherein each sub frame includes data associated with the first portion and data associated with the second portion that are interleaved together; anda mobile device that is arranged to receive the locally formatted data. - View Dependent Claims (18, 19, 20)
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Specification