Method for adaptive interleaving in a wireless communication system with feedback
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorAli S. Khayrallah
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Abstract
The present invention pertains to a transmitter that can exploit feedback to help it organize information which is subsequently sent to a receiver. More specifically, the transmitter receives a feedback signal from the receiver and then uses data about a channel in the feedback signal to adapt at least one of a coding, interleaving and modulating scheme to organize information which is subsequently transmitted to the receiver. In this way, the transmitter can obtain the best match of a channel and a given information payload.
Claims18
1-32. (canceled)
A transmitter that receives a feedback signal from a receiver for adaptively interleaving information sent in a wireless communications network, said transmitter operative to:
- obtain an identifier of a chosen interleaving scheme from said feedback signal, wherein said receiver selects the identifier of the chosen interleaving scheme based on a condition of a channel between said transmitter and said receiver;
- access a list of pre-defined interleaving schemes stored therein to determine which one of the pre-defined interleaving schemes corresponds with the identifier of the chosen interleaving scheme located in said feedback signal;
- and,
- instruct an interleaver to implement said one pre-defined interleaving scheme to adaptively interleave information which is subsequently transmitted in a radio signal to said receiver.
A method implemented by a transmitter for adaptively interleaving information sent in a wireless communications network, said method comprising the steps of:
- receiving a feedback signal from a receiver, wherein the feedback signal contains an identifier of a chosen interleaving scheme which was selected by said receiver based on a condition of a channel between said transmitter and said receiver;
- accessing a list of pre-defined interleaving schemes to determine which one of the pre-defined interleaving schemes corresponds with the identifier of the chosen interleaving scheme located in said feedback signal;
- and,
- implementing said one pre-defined interleaving scheme to adaptively interleave information which is subsequently transmitted in a radio signal to said receiver.
A communication system, comprising:
- a transmitter capable of transmitting a first radio signal;
- a receiver capable of receiving the radio signal and further capable of processing the radio signal and transmitting a feedback signal;
- wherein said transmitter is capable of receiving the feedback signal and is further operative to:
- obtain an identifier of a chosen interleaving scheme from said feedback signal, wherein said receiver selects the identifier of the chosen interleaving scheme based on a condition of a channel between said transmitter and said receiver;
- access a list of pre-defined interleaving schemes stored therein to determine which one of the pre-defined interleaving schemes corresponds with the identifier of the chosen interleaving scheme located in said feedback signal;
- and,
- instruct an interleaver to implement said one pre-defined interleaving scheme to adaptively interleave information which is subsequently transmitted in a second radio signal to said receiver.
Dependencies are inferred from the claim text.