PACKET RETRANSMISSION

• US 20100205501A1
• Filed: 04/15/2010
• Published: 08/12/2010
• Est. Priority Date: 04/12/2006
• Status: Active Grant

• Current Assignee: TQ Delta LLC (Techquity Capital Management, LLC)
• Original Assignee: Aware Incorporated (Crowley Holdings Preferred LLC)
• Inventors: Tzannes, Marcos C.
• Granted Patent: US 8,595,577 B2
• Time in Patent Office: Days
• US Class Current: 714/748
• CPC Class Codes: H03M 13/00 Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes error detection or error correction for analogue/digital, digital/analogue or code conversion H03M1/00 – H03M11/00; specially adapted for digital computers G06F11/08; for information storage based on relative movement between record carrier and transducer G11B, e.g. G11B20/18; for static stores G11C
• CPC Class Codes: H03M 13/09 Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
• CPC Class Codes: H03M 13/091 Parallel or block-wise CRC computation
• CPC Class Codes: H03M 13/2707 Simple row-column interleaver, i.e. pure block interleaving
• CPC Class Codes: H03M 13/6513 Support of multiple code types, e.g. unified decoder for LDPC and turbo codes
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04L 1/1809 Selective-repeat protocols
• CPC Class Codes: H04L 1/1835 Buffer management
• CPC Class Codes: H04L 1/1874 Buffer management
• CPC Class Codes: H04L 12/5601 Transfer mode dependent, e.g. ATM
• CPC Class Codes: H04L 2012/5647 Cell loss
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 45/72 Routing based on the source address
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/2433 Allocation of priorities to traffic types
• CPC Class Codes: H04L 47/2441 : relying on flow classification, e.g. using integrated services [IntServ]
• CPC Class Codes: H04L 47/32 : by discarding or delaying data units, e.g. packets or frames
• CPC Class Codes: H04L 49/552 : by ensuring the integrity of packets received through redundant connections
• CPC Class Codes: H04L 69/324 : in the data link layer [OSI layer 2], e.g. HDLC

Abstract

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.

Claims

1. A method of packet retransmission comprising:

transmitting or receiving a plurality of packets;

identifying at least one packet of the plurality of packets as a packet that should not be retransmitted.

2. The method of claim 1, wherein the packet is any grouping of bytes.

3. The method of claim 1, wherein the packet is one of an IP packet, an Ethernet packet, an ATM cell, a PTM packet, an ADSL Mux-Data Frame, a PTM-TC codeword, an RS codeword and a DMT symbol.

4. The method of claim 1, wherein a bit field comprising a sequence identifier (SID) is appended to each packet.

5. The method of claim 4, wherein the identifying step comprises using a special value for a sequence identifier (SID).

6. The method of claim 4, wherein the appended bit field comprises a dedicated CRC.

7. The method of claim 1, wherein the at least one packet is not stored for retransmission.

8. The method of claim 1, wherein the at least one packet is passed immediately to a high layer.

9. A packet retransmission module capable of transmitting or receiving a plurality of packets and capable of identifying at least one packet of the plurality of packets as a packet that should not be retransmitted.

10. The module of claim 9, wherein the packet is any grouping of bytes.

11. The module of claim 9, wherein the packet is one of an IP packet, an Ethernet packet, an ATM cell, a PTM packet, an ADSL Mux-Data Frame, a PTM-TC codeword, an RS codeword and a DMT symbol.

12. The module of claim 9, wherein the module is capable of appending a bit field comprising a sequence identifier (SID) to each packet.

13. The module of claim 12, wherein the identifying comprises using a special value for the SID.

14. The module of claim 12, wherein the appended bit field comprises a dedicated CRC.

15. The module of claim 9, wherein the at least one packet is not stored by the module for retransmission.

16. The module of claim 9, wherein the at least one packet is passed by the module immediately to a high layer.

17. The module of claim 9, wherein the module is implemented in one or more of a wireless transceiver, a wireless LAN station, a wired transceiver, a DSL modem, an ADSL modem, an xDSL modem, a VDSL modem, a multicarrier transceiver, a general purpose computer, a special purpose computer, a programmed microprocessor, a microcontroller and peripheral integrated circuit element(s), an ASIC, a digital signal processor, a hard-wired electronic or logic circuit and a programmable logic device.

18. The module of claim 9, wherein the module is implemented in one or more of a PTM-TC, ATM-TC, PMD and PMS-TC.

19-27. -27. (canceled)

28. A method of packet retransmission comprising:

transmitting or receiving a plurality of packets;

identifying at least one packet of the plurality of packets as a packet that should be retransmitted and at least one packet of the plurality of packets as a packet that should not be retransmitted.

29. The method of claim 28, wherein the packet is any grouping of bytes.

30. The method of claim 28, wherein the packet is one of an IP packet, an Ethernet packet, an ATM cell, a PTM packet, an ADSL Mux-Data Frame, a PTM-TC codeword, an RS codeword and a DMT symbol.

31. The method of claim 28, wherein a bit field comprising a sequence identifier (SID) is appended to each packet.

32. The method of claim 31, wherein the identifying step comprises using a special value for a sequence identifier (SID).

33. The method of claim 31, wherein the appended bit field comprises a dedicated CRC.

34. The method of claim 28, wherein at least one packet is stored for retransmission.

35. The method of claim 28, wherein at least one packet is passed immediately to a high layer.

36-44. -44. (canceled)

45. Means for packet retransmission comprising:

means for transmitting or receiving a plurality of packets;

means for identifying at least one packet of the plurality of packets as a packet that should not be retransmitted.

46. The means of claim 45, wherein the packet is any grouping of bytes.

47. The means of claim 45, wherein the packet is one of an IP packet, an Ethernet packet, an ATM cell, a PTM packet, an ADSL Mux-Data Frame, a PTM-TC codeword, an RS codeword and a DMT symbol.

48. The means of claim 45, wherein a bit field comprising a sequence identifier (SID) is appended to each packet.

49. The means of claim 48, wherein the means for identifying comprises using a special value for a sequence identifier (SID).

50. The means of claim 48, wherein the appended bit field comprises a dedicated CRC.

51. The means of claim 45, wherein the at least one packet is not stored for retransmission.

52. The means of claim 45, wherein the at least one packet is passed immediately to a high layer.

53-57. -57. (canceled)

58. Means for packet retransmission comprising:

means for transmitting or receiving a plurality of packets;

means for identifying at least one packet of the plurality of packets as a packet that should be retransmitted and at least one packet of the plurality of packets as a packet that should not be retransmitted.

59. The means of claim 58, wherein the packet is any grouping of bytes.

60. The means of claim 58, wherein the packet is one of an IP packet, an Ethernet packet, an ATM cell, a PTM packet, an ADSL Mux-Data Frame, a PTM-TC codeword, an RS codeword and a DMT symbol.

61. The means of claim 58, wherein a bit field comprising a sequence identifier (SID) is appended to each packet.

62. The means of claim 61, wherein the means for identifying comprises using a special value for the sequence identifier (SID).

63. The means of claim 58, wherein the appended bit field comprises a dedicated CRC.

64. The means of claim 58, wherein at least one packet is stored for retransmission.

65. The means of claim 58, wherein at least one packet is passed immediately to a high layer.

66-71. -71. (canceled)

72. A transceiver capable of performing packet retransmission comprising:

a transmission management module configurable to transmit or receive a plurality of packets; and

a QOS module configurable to identify at least one packet of the plurality of packets as a packet that should not be retransmitted.

73. The transceiver of claim 72, wherein the packet is any grouping of bytes.

74. The transceiver of claim 72, wherein the packet is one of an IP packet, an Ethernet packet, an ATM cell, a PTM packet, an ADSL Mux-Data Frame, a PTM-TC codeword, an RS codeword and a DMT symbol.

75. The transceiver of claim 72, wherein a bit field comprising a sequence identifier (SID) is appended to each packet.

76. The transceiver of claim 75, wherein the QOS module uses a special value for a sequence identifier (SID).

77. The transceiver of claim 75, wherein the appended bit field comprises a dedicated CRC.

78. The transceiver of claim 72, wherein the at least one packet is not stored for retransmission.

79. The transceiver of claim 72, wherein the at least one packet is passed immediately to a high layer.

80-84. -84. (canceled)

85. A transceiver capable of performing packet retransmission comprising:

a transmission management module configurable to transmit or receive a plurality of packets; and

a QOS module configurable to identify at least one packet of the plurality of packets as a packet that should be retransmitted and at least one packet of the plurality of packets as a packet that should not be retransmitted.

86. The transceiver of claim 85, wherein the packet is any grouping of bytes.

87. The transceiver of claim 85, wherein the packet is one of an IP packet, an Ethernet packet, an ATM cell, a PTM packet, an ADSL Mux-Data Frame, a PTM-TC codeword, an RS codeword and a DMT symbol.

88. The transceiver of claim 85, wherein a bit field comprising a sequence identifier (SID) is appended to each packet.

89. The transceiver of claim 88, wherein the identifying step comprises using a special value for a sequence identifier (SID).

90. The transceiver of claim 88, wherein the appended bit field comprises a dedicated CRC.

91. The transceiver of claim 85, wherein at least one packet is stored for retransmission.

92. The transceiver of claim 85, wherein at least one packet is passed immediately to a high layer.

93-105. -105. (canceled)