Forward feedback for ul macrodiversity
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsMichael Meyer, Henning Wiemann
Life of this patent
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Abstract
A method of controlling a data unit transmission from a sender (10) to a receiver (11) is described, comprising the steps: the sender (10) sending a data unit (101) to the receiver (11), the receiver (11) sending to the sender (10) a feedback message (102) comprising receipt status information (104) for the data unit (101) indicating one of at least correct receipt and incorrect receipt, and the sender (10), subsequent to receiving the feedback message (102), sending to the receiver (11) feedback response information (105) indicating a receipt status indicated in the received feedback message (102).
Claims42
A method of controlling a data unit transmission from a sender to a receiver among a plurality of n receivers involved in a macro-diversity transmission, n being an integer larger than one, comprising the steps of:
- said sender sending a data unit to each of said plurality of n receivers,
- for each value of i from 1 to n, the i-th receiver sending to said sender an i-th feedback message (602_1, 602_2) comprising receipt status information for said data unit indicating one of at least correct receipt and incorrect receipt at the i-th receiver,
- said sender, subsequent to receiving said i-th feedback message (602_1, 602_2), sending to said i-th receiver i-th feedback response information indicating a receipt status indicated in said received i-th feedback message.
A method of controlling a data unit sender in a transmission of a data unit to a receiver among a plurality of n receivers involved in a macro-diversity transmission, n being an integer larger than one, where for each value of i from 1 to n, the i-th receiver sends to said sender an i-th feedback message comprising receipt status information for said data unit indicating one of at least correct receipt and incorrect receipt at the i-th receiver, the method comprising the steps of:
- sending said data unit to each of said plurality of n receivers, and
- subsequent to receiving said i-th feedback message from said i-th receiver, sending to said i-th receiver i-th feedback response information indicating a receipt status indicated in said received i-th feedback message.
A method of controlling a data unit receiver in a macro-diversity transmission of a data unit from a sender to said receiver, comprising the steps:
- subsequent to receiving said data unit, sending to said sender a feedback message comprising receipt status information for said data unit indicating one of at least correct receipt and incorrect receipt,
- subsequent to receiving from said sender feedback response information indicating a receipt status indicated in said feedback message as received by said sender, determining whether said receipt status information and said feedback response information indicate the same receipt status.
A data unit sender for transmitting a data unit to a receiver among a plurality of n receivers involved in a macro-diversity transmission, n being an integer larger than one, comprising
- a control system arranged for sending a data unit to each of said plurality of n receivers, and
- subsequent to receiving an i-th feedback message sent from the i-th receiver, i being an integer from 1 to n, said i-th feedback message comprising receipt status information for said data unit indicating one of at least correct receipt and incorrect receipt at the i-th receiver, for sending to said i-th receiver
- i-th feedback response information indicating a receipt status indicated in said received i-th feedback message.
A data unit receiver for receiving a data unit from a sender in a macro-diversity transmission, comprising a control system arranged for sending to said sender a feedback message comprising receipt status information for said data unit indicating one of at least correct receipt and incorrect receipt, subsequent to receiving said data unit, and, subsequent to receiving from said sender feedback response information indicating a receipt status indicated in said feedback message as received by said sender, for determining whether said receipt status information and said feedback response information indicate the same receipt status.
Dependencies are inferred from the claim text.