Method of packet retransmission and reception and wireless device employing the same

Patent metadata

Field	Value
Publication number	US-9397779-B2
Application number	US-81264009-A
Country	US
Kind code	B2
Filing date	Jan 23, 2009
Priority date	Jan 29, 2008
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

A first wireless device communicates data to a second wireless device. The first wireless device employs at least one of a first interleaving scheme and a first sub-carrier mapping scheme to produce a first data packet from a first plurality of data bits, and transmits the first data packet to the second wireless device. When the first data packet is not received correctly by the second wireless device, then the first wireless device employs at least one of a second interleaving scheme and a second sub-carrier mapping scheme to create a second data packet from the first plurality of data bits, and transmits the second data packet to the second wireless device.

First claim

What is claimed is:

1. A method of communicating data from a first wireless device to a second wireless device, the method comprising:
employing a first set of schemes comprising a first interleaving scheme and a first sub-carrier mapping scheme to produce a first data packet from a first plurality of data bits;
transmitting the first data packet, including a first transmission mode information indicating that the first set of schemes is employed, to the second wireless device; and
when the first data packet is not received correctly by the second wireless device, then:
employing a second set of schemes to create a second data packet from the first plurality of data bits; and
transmitting the second data packet, including a second transmission mode information indicating that the second set of schemes is employed, to the second wireless device;

wherein the second set of schemes is different from the first set of schemes in that at least one of the first interleaving scheme is replaced by a second interleaving scheme different from the first interleaving scheme and the first sub-carrier mapping scheme is replaced by a second sub-carrier mapping scheme different from the first sub-carrier mapping scheme; and
wherein the first wireless device transmits the first transmission mode information in the first data packet, and when the first data packet is not received correctly by the second wireless device, transmits the second transmission mode information in the second data packet to the second wireless device by performing at least one of:
transmitting unique signature sequences corresponding to the first and the second transmission mode information in a preamble portion of a data packet of which header and payload are transmitted using the same set of schemes; and
transmitting each of the first and the second transmission mode information in a specific field in a header, which is transmitted using a predefined scheme, while payload is transmitted using a scheme as determined by the specific field corresponding to the first and the second transmission mode information.

2. The method of claim 1 , wherein both the first interleaving scheme and the firs sub-carrier mapping scheme are employed to produce the first data packet from a first plurality of data bits, and wherein the first interleaving scheme and the second sub-carrier mapping scheme are employed to produce the second data packet from the first plurality of data bits.

3. The method of claim 1 , wherein both the first interleaving scheme and the first sub-carrier mapping scheme are employed to produce the first data packet from a first plurality of data bits, and wherein the second interleaving scheme and the first sub-carrier mapping scheme are employed to produce the second data packet from the first plurality of data bits.

4. The method of claim 1 , wherein both the first interleaving scheme and the first sub-carrier mapping scheme are employed to produce the first data packet from a first plurality of data bits, and wherein the second interleaving scheme and the second sub-carrier mapping scheme are employed to produce the second data packet from the first plurality of data bits.

5. A method of receiving data from a first wireless device at a second wireless device, the method comprising:
receiving a first data packet, including a first transmission mode information indicating that a first set of schemes, comprising a first interleaving scheme and a first sub-carrier mapping scheme, is employed to produce the first data packet from a first plurality of data bits, from the first wireless device;
decoding the first data packet in accordance with the first set of schemes to create a second plurality of data bits from the first data packet;
when the first data packet is not received correctly, then:
receiving a second data packet, including a second transmission mode information indicating that a second set of schemes is employed to produce the second data packet from the first plurality of data bits, from the first wireless device;
decoding the second data packet in accordance with the second set of schemes to produce a third plurality of data bits from the second data packet;

wherein the second set of schemes is different from the first set of schemes in that at least one of the first interleaving scheme is replaced by a second interleaving scheme different from the first interleaving scheme and the first sub-carrier mapping scheme is replaced by a second sub-carrier mapping scheme different from the first sub-carrier mapping scheme; and
wherein the first wireless device transmits the first transmission mode information in the first data packet, and when the first data packet is not received correctly by the second wireless device, transmits the second transmission mode information in the second data packet to the second wireless device by performing at least one of:
transmitting unique signature sequences corresponding to the first and the second transmission mode information in a preamble portion of a data packet of which header and payload are transmitted using the same set of schemes; and
transmitting each of the first and the second transmission mode information in a specific field in a header, which is transmitted using a predefined scheme, while payload is transmitted using a scheme as determined by the specific field corresponding to the first and the second transmission mode information.

6. The method of claim 5 , wherein both an inverse of the first interleaving scheme and the inverse of the first sub-carrier mapping scheme are employed to produce the second plurality of data bits from the first data packet, and wherein the inverse of the first interleaving scheme and the inverse of the second sub-carrier mapping scheme are employed to produce the third plurality of data bits from the second data packet.

7. The method of claim 5 , wherein both an inverse of the first interleaving scheme and the inverse of the first sub-carrier mapping scheme are employed to produce the second plurality of data bits from the first data packet, and wherein the inverse of the second interleaving scheme and the inverse of the first sub-carrier mapping scheme are employed to produce the third plurality of data bits from the second data packet.

8. The method of claim 5 , wherein both an inverse of the first interleaving scheme and the inverse of the first sub-carrier mapping scheme are employed to produce the second plurality of data bits from the first data packet, and wherein the inverse of the second interleaving scheme and the inverse of the second sub-carrier mapping scheme are employed to produce the third plurality of data bits from the second data packet.

9. A wireless device comprising:
a memory configured to store multiple sets of schemes; and
a processor configured to operate a transmitter;
the transmitter being adapted to employ a first set of schemes comprising a first interleaving scheme and a first sub-carrier mapping scheme to create a first data packet from a first plurality of data bits, and to transmit the first data packet, including a first transmission mode information indicating that the first set of schemes is employed, to a second wireless device,
wherein when the first data packet is not received successfully by the second wireless device, then the transmitter is adapted to employ a second set of schemes to create a second data packet from the first plurality of data bits; and to transmit the second data packet, including a second transmission mode information indicating that the second set of schemes is employed, to the second wireless device;
wherein the second set of schemes is different from the first set of schemes in that at least one of the first i

Assignees

• Gaddam Vasanth
• Ghosh Monisha
• Wang Jianfeng
• Koninkl Philips Nv

Inventors

• Gaddam Vasanth
• Ghosh Monisha
• Wang Jianfeng

Classifications

• H04L5/0044

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title

• H04L1/1867

  Arrangements specially adapted for the transmitter end · CPC title

• H04L1/0071

  Use of interleaving (interleaving per se H03M13/27) · CPC title

• H04L1/0001 Primary

  Systems modifying transmission characteristics according to link quality, e.g. power backoff (adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04) · CPC title

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title