Packet retransmission
View Patent ↗Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like.
1. An apparatus comprising:
a multicarrier transceiver including a processor and memory operable to:
transmit a packet using a forward error correction encoder and an interleaver, wherein the packet comprises a header field and a plurality of PTM-TC codewords, a plurality of ATM cells or a plurality of Reed-Solomon codewords, and wherein the header field comprises a sequence identifier (SID); and
receive a plurality of messages using a forward error correction decoder and without using a deinterleaver, wherein each message of the plurality of messages is received in a different DMT symbol and wherein at least one message of the plurality of messages includes an acknowledgement (ACK) or a negative acknowledgement (NACK) of the transmitted packet.
2. The apparatus of claim 1 , wherein the received messages have a higher immunity to noise than the transmitted packet.
3. The apparatus of claim 1 , wherein the transceiver is operable to retransmit the packet using the forward error correction encoder and the interleaver.
4. The apparatus of claim 1 , wherein the message indicates at least one count value associated with the packet.
5. The apparatus of claim 1 , wherein the apparatus is a linecard that is capable of transporting video, voice and data.
6. The apparatus of claim 1 , wherein the apparatus is a customer premises equipment that is capable of transporting video, voice and data.
7. The apparatus of claim 1 , wherein the transceiver includes at least one digital signal processor.
8. The apparatus of claim 1 , wherein the transceiver includes at least one ASIC.
9. An apparatus comprising:
a multicarrier transceiver including a processor and memory operable to:
receive a packet using a forward error correction decoder and a deinterleaver, wherein the packet comprises a header field and a plurality of PTM-TC codewords, a plurality of ATM cells or a plurality of Reed-Solomon codewords, and wherein the header field comprises a sequence identifier (SID); and
transmit a plurality of messages using a forward error correction encoder and without using an interleaver, wherein each message of the plurality of messages is transmitted in a different DMT symbol and wherein at least one message of the plurality of messages includes an acknowledgement (ACK) or a negative acknowledgement (NACK) of the received packet.
10. The apparatus of claim 9 , wherein the transmitted messages have a higher immunity to noise than the received packet.
11. The apparatus of claim 9 , wherein the transceiver is operable to receive a retransmitted packet using the forward error correction decoder and the deinterleaver.
12. The apparatus of claim 9 , wherein the message indicates at least one count value associated with the packet.
13. The apparatus of claim 9 , wherein the apparatus is a linecard that is capable of transporting video, voice and data.
14. The apparatus of claim 9 , wherein the apparatus is a customer premises equipment that is capable of transporting video, voice and data.
15. The apparatus of claim 9 , wherein the transceiver includes at least one digital signal processor.
16. The apparatus of claim 9 , wherein the transceiver includes at least one ASIC.
17. A method, in a multicarrier transceiver, comprising:
transmitting a packet using a forward error correction encoder and an interleaver, wherein the packet comprises a header field and a plurality of PTM-TC codewords, a plurality of ATM cells or a plurality of Reed-Solomon codewords, and wherein the header field comprises a sequence identifier (SID); and
receiving a plurality of messages using a forward error correction decoder and without using a deinterleaver, wherein each message of the plurality of messages is received in a different DMT symbol and wherein at least one message of the plurality of messages includes an acknowledgement (ACK) or a negative acknowledgement (NACK) of the transmitted packet.
18. The method of claim 17 , wherein the received messages have a higher immunity to noise than the transmitted packet.
19. The method of claim 17 , further comprising retransmitting the packet using the forward error correction encoder and the interleaver.
20. The method of claim 17 , wherein the message indicates at least one count value associated with the packet.
21. The method of claim 17 , wherein the method is performed in a linecard that is transporting video, voice and data.
22. The method of claim 17 , wherein the method is performed in a customer premises equipment that is transporting video, voice and data.
23. A method, in a multicarrier transceiver, comprising:
receiving a packet using a forward error correction decoder and a deinterleaver, wherein the packet comprises a header field and a plurality of PTM-TC codewords, a plurality of ATM cells or a plurality of Reed-Solomon codewords, and wherein the header field comprises a sequence identifier (SID); and
transmitting a plurality of messages using a forward error correction encoder and without using an interleaver, wherein each message of the plurality of messages is transmitted in a different DMT symbol and wherein at least one message of the plurality of messages includes an acknowledgement (ACK) or a negative acknowledgement (HACK) of the received packet.
24. The method of claim 23 , wherein the transmitted messages have a higher immunity to noise than the received packet.
25. The method of claim 23 , further comprising receiving a retransmitted packet using the forward error correction decoder and the deinterleaver.
26. The method of claim 23 , wherein the message indicates at least one count value associated with the packet.
27. The method of claim 23 , wherein the method is performed in a linecard that is transporting video, voice and data.
28. The method of claim 23 , wherein the method is performed in a customer premises equipment that is transporting video, voice and data.