Retransmission in data communication systems
First Claim
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1. A method comprisingreceiving a data packet;
- separating the data packet in a plurality of data fragments;
providing for each of the plurality of data fragments or for a group of the plurality of data fragments an identification;
transmitting the plurality of data fragments from a first transceiver unit to a second transceiver unit;
transmitting a request for retransmission from the second transceiver unit to the first transceiver unit, the request comprising one or more identifications;
processing the request for retransmission at the first transceiver unit to identify one or more data fragments based on the one or more identifications; and
retransmitting the one or more identified data fragments.
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Abstract
Embodiments related to retransmission in data communication systems are described and depicted
45 Citations
25 Claims
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1. A method comprising
receiving a data packet; -
separating the data packet in a plurality of data fragments; providing for each of the plurality of data fragments or for a group of the plurality of data fragments an identification; transmitting the plurality of data fragments from a first transceiver unit to a second transceiver unit; transmitting a request for retransmission from the second transceiver unit to the first transceiver unit, the request comprising one or more identifications; processing the request for retransmission at the first transceiver unit to identify one or more data fragments based on the one or more identifications; and retransmitting the one or more identified data fragments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A transmitter comprising:
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a fragmentation entity to separate a packet into a plurality of data fragments; an identification entity to provide for each data fragment or group of data fragments an identification; a retransmission entity to receive a retransmission request including at least one of the identifications of the data fragments from a remote transceiver unit. - View Dependent Claims (12, 13, 14, 15)
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16. A receiver comprising
a retransmission entity to receive data fragments, wherein each of the data fragments or a group of data fragments comprises an identification, wherein the retransmission entity is configured to provide indication of at least one corrupt fragment; - and
a request generation entity to receive the indication and to generate a retransmission request based on the identification and the indication of at least one corrupt data fragment or at least one corrupt group of data fragments. - View Dependent Claims (17, 18, 19)
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20. A DSL transmission system comprising:
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a first transceiver unit, the first transceiver unit comprising a fragmentation entity to separate a packet into a plurality of data fragments; a first identification entity to provide for each data fragment or a group of data fragments an identification; a first transmission entity to transmit the plurality of data fragments; and a first retransmission entity to receive retransmission requests and to identify at least one fragment based on the received retransmission request; a second transceiver unit, the second transceiver unit comprising a second retransmission entity to receive the plurality of data fragments and to provide indication of at least one corrupt data fragment; a request generation entity to receive the indication and to generate a retransmission request based on the indication and the identification; and a transmission entity to transmit the retransmission request to the first transceiver unit. - View Dependent Claims (21, 22, 23)
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- 24. A protocol stack for a DSL transmission system, the protocol stack comprising a retransmission functionality, the retransmission functionality being provided between a sublayer of a TPS-TC layer and a data link layer, the retransmission functionality having a fragment of a packet or a group of fragments of a packet as basic retransmission unit.
Specification