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US 10,256,948 B2Granted
Low latency, automatic repeat request (“ARQ”) in a multi-device communications link
AssigneeMaxlinear Asia Singapore PTE LTD
InventorHanan Leizerovich
Life of this patent
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Abstract
Systems and methods enable a plurality of modems in a microwave network receive a plurality of frames from a previous one of the plurality of modems and detect an error frame within the plurality of frames. The plurality of modems can be further configured to send a retransmission request to the previous modem upon detection of the error frame and transmit a dummy frame in place of the error frame to a next one of the plurality of modems.
Claims19
A repeater, the repeater comprising:
- a memory configured to store a plurality of frames comprising data frames and dummy frames, wherein a transmission schedule for four frames of the plurality of frames comprises the following order:
- a first data frame, a second data frame, a first dummy frame, and a third data frame;
- a receiver configured to detect a retransmission request for the first data frame;
- and
- a transmitter configured to retransmit the first data frame in replacement of the second data frame, wherein the second data frame is transmitted immediately after the first data frame, the a third data frame is transmitted immediately after the second data frame, and the first dummy frame is removed from the transmission schedule.
2 more elements
A repeater, the repeater comprising:
- a transceiver configured to receive a plurality of frames from a previous modem of a plurality of modems and transmit the plurality of frames to a subsequent modem of the plurality of modems according to a transmit schedule;
- and
- a memory to store the plurality of frames,
- wherein the transceiver is configured to:
- detect an error frame in the plurality of frames that was received from the previous modem;
- send a retransmission request for the error frame to the previous modem using the transceiver;
- transmit a first dummy frame in replacement of the error frame to the subsequent modem using the transceiver;
- transmit a data frame in place of a second dummy frame that is scheduled for a future transmission to the subsequent modem;
- and
- remove the second dummy frame from the transmission schedule.
7 more elements
A method of operating a communications link having a plurality of modems, the method comprising:
- receiving, at a first modem, a series of data frames from a second modem in the communications link, wherein the series of data frames comprises a dummy frame;
- generating, at the first modem, a transmission schedule for transmitting the series of data frames and the dummy frame;
- determining whether a first data frame of the series of data frames is an error frame;
- sending a retransmission request to the second modem if the first data frame is an error frame;
- removing the dummy frame from the transmission schedule if the first data frame is an error frame;
- and
- rescheduling a second data frame of the series of data frames to be transmitted instead of the dummy frame if the first data frame is an error frame.
4 more elements
Dependencies are inferred from the claim text.