Method and system for low power transmission and data alignment
First Claim
1. A method for operating a first base station subsystem, comprising:
- generating signal data samples for transmission over a first high speed serial data link;
generating dummy samples for transmission over the first high speed serial data link;
switching the signal data samples and the dummy samples onto a serial interface input in response to an idle condition having first and second values such that any available signal data samples are switched onto the serial interface input when the idle condition is of a first state, and the dummy samples are switched onto the serial interface input when the idle condition is of a second state;
serializing the signal data and dummy samples from the serial interface input into a plurality of symbols for transmission over the first high speed serial data link;
providing a plurality of RF control signals to a transceiver subsystem which is connected to receive the plurality of symbols over the first high speed serial data link to simultaneously disable RF signal reception and enable RF signal transmission at the transceiver subsystem when a transmission enable control signal is in a first phase, and to simultaneously enable RF signal reception and disable RF signal transmission at the transceiver subsystem when the transmission enable control signal is in a second phase; and
transmitting the plurality of symbols over the first high speed serial data link, wherein the first high speed serial data link is maintained as active by transmitting the plurality of symbols generated from the dummy samples when there are no signal data samples available.
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Accused Products
Abstract
A method and apparatus automatically maintains a JESD204 serial data link (252) as active by using an idle signal (254) and multiplexer selection circuit (247) to selectively switch signal data samples (246) and dummy samples (0, . . . 0) onto a serial interface input to a JESD module (248) for serialization into a plurality of symbols for transmission over the JESD204 serial data link (252) in response to a transmit clock signal (253) so that serialized symbols generated from signal data samples are transmitted when there are signal data samples available, and serialized symbols generated from dummy samples are transmitted when there are no signal data samples available.
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Citations
19 Claims
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1. A method for operating a first base station subsystem, comprising:
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generating signal data samples for transmission over a first high speed serial data link; generating dummy samples for transmission over the first high speed serial data link; switching the signal data samples and the dummy samples onto a serial interface input in response to an idle condition having first and second values such that any available signal data samples are switched onto the serial interface input when the idle condition is of a first state, and the dummy samples are switched onto the serial interface input when the idle condition is of a second state; serializing the signal data and dummy samples from the serial interface input into a plurality of symbols for transmission over the first high speed serial data link;
providing a plurality of RF control signals to a transceiver subsystem which is connected to receive the plurality of symbols over the first high speed serial data link to simultaneously disable RF signal reception and enable RF signal transmission at the transceiver subsystem when a transmission enable control signal is in a first phase, and to simultaneously enable RF signal reception and disable RF signal transmission at the transceiver subsystem when the transmission enable control signal is in a second phase; andtransmitting the plurality of symbols over the first high speed serial data link, wherein the first high speed serial data link is maintained as active by transmitting the plurality of symbols generated from the dummy samples when there are no signal data samples available. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for operating a first base station subsystem connected to a transceiver subsystem over a first high speed transmit serial data link and a second high speed receive serial data link used in a time division duplex mode, comprising:
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switching signal data samples and dummy samples into a high speed transmit serial interface for serializing the signal data samples and dummy samples into a plurality of symbols in response to an idle signal having first and second phases, such that the signal data samples are switched into the high speed transmit serial interface when the idle signal is in the first phase, and the dummy samples are switched into the high speed transmit serial interface when the idle signal is in the second phase; transmitting the plurality of symbols from the high speed transmit serial interface over the first high speed transmit serial data link to the transceiver subsystem so that the first high speed transmit serial data link is maintained as active by transmitting the plurality of symbols generated from the dummy samples when there are no signal data samples available; and providing a plurality of RF control signals to the transceiver subsystem to simultaneously disable RF signal reception and enable RF signal transmission when a transmission enable control signal is in a first phase, and to simultaneously enable RF signal reception and disable RF signal transmission when the transmission enable control signal is in a second phase. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. An integrated circuit for a local base station subsystem connected to at least a first base station subsystem, the integrated circuit comprising:
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a first clock generator for generating a transmit clock signal that is synchronous to a network radio frame; a second clock generator for generating an idle signal having first and second values; a transmit interface for transmitting symbols over a serial interface link to the first base station subsystem comprising; a serial interface for serializing samples switched into the serial interface into a plurality of symbols for transmission over the serial interface link in response to the transmit clock signal; and a switching circuit for switching signal data samples and dummy samples into the serial interface in response to the idle signal, such that the signal data samples are switched into the serial interface when the idle signal has the first value, and the dummy samples are switched into the serial interface when the idle signal has the second value; and
a transceiver subsystem connected to receive the plurality of symbols over the first high speed serial data link, where the transceiver subsystem receives a plurality of RF control signals to simultaneously disable RF signal reception and enable RF signal transmission at the transceiver subsystem when a transmission enable control signal is in a first phase, and to simultaneously enable RF signal reception and disable RF signal transmission at the transceiver subsystem when the transmission enable control signal is in a second phase. - View Dependent Claims (19)
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Specification