Transmission of data with forward error correction information

• US 20060236153A1
• Filed: 02/26/2004
• Published: 10/19/2006
• Est. Priority Date: 03/18/2003
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Aaltonen, Janne
• Granted Patent: US 7,757,146 B2
• Time in Patent Office: Days
• US Class Current: 714/25
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/188 Time-out mechanisms
• CPC Class Codes: H04L 2001/0096 Channel splitting in point-to-point links

Abstract

A method of transmitting content data to one or more receiving devices (5a, 5b) over a first communication channel (7) and transmitting recovery information associated with the content data over a second communication channel (9). The recovery information may be transmitted as a response to a request from the receiving device.

Claims

1-26. -26. (canceled)

27. A method of transmitting content to one or more receiving devices comprising:

generating recovery data for use in forward error correction of the content;

transmitting the content to said receiving devices over a first communication channel; and

in response to a request from one or more of said receiving devices, transmitting the recovery data to said one or more receiving devices over a second communication channel.

28. A method according to claim 27, wherein the first communication channel is provided by a first communication network and the second communication channel is provided by a second communication network.

29. A method according to claim 28, wherein the first communication network is uni-directional.

30. A method according to claim 27, wherein the first communication channel and the second communication channel are logical channels in a first communication network.

31. A method according to claim 30, wherein the first communication network is uni-directional.

32. A method of receiving content from a source comprising:

receiving one or more content data packets from a first communication channel;

determining whether the received content data packets contain errors and, if so, whether said errors are correctable; and

in response to a positive determination, sending a request for recovery data to the source, receiving said recovery data from a second communication channel and using the recovery data for performing forward error correction of the content data packets.

33. A method according to claim 32, wherein the first communication channel is provided by a first communication network and the second communication channel is provided by a second communication network.

34. A method according to claim 33, wherein the first communication network is uni-directional.

35. A method according to claim 32, wherein the first communication channel and the second communication channel are logical channels in a first communication network.

36. A method according to claim 35, wherein the first communication network is uni-directional.

37. An apparatus for transmitting content to one or more receiving devices comprising:

a processor configured to generate recovery data for use in forward error correction of the content;

a transmitter configuration operable to transmit the content to said receiving devices over a first communication channel and to transmit the recovery data to one or more of said receiving devices over a second communication channel; and

an input interface for receiving requests from said one or more receiving devices;

wherein the transmitter configuration is operable to transmit the recovery data over the second communication channel in response to the reception of a request.

38. An apparatus according to claim 37, further configured to transmit the content over a first communication network and to transmit the recovery data over a second communication network.

39. An apparatus according to claim 38, including a content provider for providing said content in packets for transmission through the first network, and a recovery data provider for providing said recovery data in packets for transmission through the second network.

40. A communication system comprising an apparatus according to claim 37.

41. An apparatus for receiving content from a source, comprising:

a receiver operable to receive one or more content data packets from a first communication channel; and

a processor configured to determine whether the content data packets contain errors and, if so, whether said errors are correctable, and, in response to a positive determination, to send a request for recovery data to the source and, in response to the reception of the recovery data from a second communication channel, to perform forward error correction using said recovery data.

42. An apparatus according to claim 41, wherein the first communication channel is provided by a first communication network and the second communication channel is provided by a second communication network.

43. An apparatus according to claim 41, comprising a mobile telephone handset.

44. A communication system comprising an apparatus according to claim 41.