US 2002/0154612 A1 · Method and devices for transmitting data with acknowledgement mechanism

Abstract

A first unit successively transmits data blocks destined for a second unit. For at least some of the transmissions of blocks, the second unit returns an acknowledgement signal indicating whether the data block transmitted has been correctly received. The first unit transmits a redundancy block with regard to a block previously transmitted for which the acknowledgement signal received indicates incorrect reception. Each block transmitted is accompanied by an identification signal indicating whether it is a redundancy block. The first unit associates each acknowledgement signal received with a block transmitted in a temporal relation determined with the reception of this acknowledgement signal. In response to the reception of an identification signal inconsistent with an acknowledgement signal previously returned, the second unit returns to the first unit a restart command signal for the transmission of the blocks.

Claims28

Dependent claims

A method of transmitting data, comprising the steps of:

transmitting successively on a channel, from a first unit, data blocks destined for a second unit;
for at least some of the transmitted data blocks, returning an acknowledgement signal from the second unit to the first unit, indicating whether said transmitted data block has been correctly received;
transmitting on said channel, from the first unit, a redundancy block relating to at least some of the data blocks previously transmitted for which a received acknowledgement signal indicates incorrect reception, whereby each transmitted block is accompanied by an identification signal indicating whether said block is a redundancy block;
associating, in the first unit, each received acknowledgement signal with a block transmitted in a determined temporal relation with the reception of said acknowledgement signal;
and
in at least some of the cases of reception of an identification signal inconsistent with an acknowledgement signal previously returned, returning from the second unit to the first unit a restart command signal for restarting transmission of the blocks.

3 more elements

A device for transmitting data, comprising:

means for transmitting successive data blocks destined for a remote unit;
and
means for receiving an acknowledgement signal returned by the remote unit and indicating whether a transmitted data block has been correctly received,
wherein the means for transmitting blocks are arranged to transmit a redundancy block relating to at least some of the blocks previously transmitted for which the acknowledgement signal received indicates incorrect reception,
wherein each acknowledgement signal received is associated with a block transmitted in a determined temporal relation with the reception of said acknowledgement signal,
the device further comprising means for transmitting an identification signal accompanying each block transmitted and indicating whether said block is a redundancy block,
wherein the means for transmitting blocks are arranged to restart the transmission of the blocks in response to the reception of a restart command signal originating from the remote unit and indicating an inconsistency between an identification signal received and an acknowledgement signal previously returned by the remote unit.

4 more elements

Dependencies are inferred from the claim text.

Method and devices for transmitting data with acknowledgement mechanism

Life of this patent

Method and devices for transmitting data with acknowledgement mechanism

Life of this patent

Abstract

Claims28