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US 8,711,888 B2Granted
Digital microwave radio link with adaptive data rate
AssigneeRemec Broadband Wireless, LLC
InventorsIdan Bar-Sade, Eliezer Pasternak, Bin Zhang, Gregg Levin
Life of this patent
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Abstract
A digital microwave link and system are provided that has an adaptive data rate.
Claims33
A rate-adapting microwave communication link, comprising:
- a first ground based microwave terminal that is capable of transmitting a signal at one of a first data rate and a second data rate, wherein the first data rate is at least 1 gigabit/second and the second data rate that is less than 1 gigabit/second;
- a second ground based microwave terminal that is capable of transmitting a signal at one of a first data rate and a second data rate, wherein the first data rate is at least 1 gigabit/second and the second data rate that is less than 1 gigabit/second;
- wherein the first ground based microwave terminal further comprises a receive performance-level monitoring circuit that generates a signal indicating a performance level of a received signal from the second ground based microwave terminal, a logic circuit coupled to the receive performance-level estimation circuit that compares the performance level to a threshold level and a circuit that generates a signal to request a transmit rate change in the second ground based microwave terminal based on the comparison of the performance level and the threshold level;
- and
- wherein the second ground based microwave terminal further comprises a receive performance-level monitoring circuit that generates a signal indicating a performance level of a received signal from the first ground based microwave terminal, a logic circuit coupled to the receive performance-level estimation circuit that compares the performance level to a threshold level and a circuit that generates a signal to request a transmit rate change in the first ground based microwave terminal based on the comparison of the performance level and the threshold level.
2 more elements
A method for communicating Ethernet data between a first microwave terminal and a second microwave terminal over a microwave link, the method comprising:
- receiving a digital data signal having a particular data rate;
- switching, within an Ethernet switch in the first microwave terminal, the digital data signal to a transmission link path;
- generating a transmission bitstream from the digital data signal, the transmission bitstream having one or more special Ethernet code words embedded into the bitstream;
- generating a modulated signal at a dual rate modulator based on the particular data rate of the digital data signal;
- and
- sending a microwave signal containing the modulated signal over a microwave link to the second microwave terminal.
3 more elements
A process of changing the transmit rate in a microwave link between a first ground based microwave terminal and a second ground based microwave terminal wherein the first and second microwave terminals are capable of transmitting a microwave signal at one of a first data rate and a second data rate, the method comprising:
- generating, at the first ground based microwave terminal, a received bitstream from a microwave signal received by the first ground based microwave terminal;
- generating, at the second ground based microwave terminal, a received bitstream from a microwave signal received by the second ground based microwave terminal;
- monitoring the received bitstream in order to generate a signal indicating a performance level of the received microwave signal from one of the second ground based microwave terminal and the first ground based microwave terminal;
- comparing the performance level of the received microwave signal to a threshold level;
- and
- generating, in one of the second ground based microwave terminal and the first ground based microwave terminal, a rate change request signal that requests a data rate change for the microwave link between the first and second data rates, wherein the first data rate is at least 1 gigabit/second and the second data rate that is less than 1 gigabit/second.
3 more elements
Dependencies are inferred from the claim text.