US 10,484,150 B2Granted

Continuous retransmission in Wi-Fi systems

AssigneeApple Inc.

InventorsYuchul Kim, Joonsuk Kim

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Abstract

This disclosure relates to performing retransmissions in a wireless communication system by a wireless device. A wireless device may receive a first transmission of a data frame according to a wireless communication technology. The wireless device may attempt to decode the data frame. It may be determined that attempting to decode the data frame is unsuccessful. A retransmission of the data frame may be received at a retransmission interval after the first transmission of the data frame. The retransmission interval may be less than a minimum interframe interval for contending for medium access for new transmissions according to the wireless communication technology.

Claims20

Dependent claims

An apparatus, comprising:

a processing element configured to cause a wireless device to:
receive a first transmission of a data frame according to a wireless communication technology;
determine that the first transmission is a new transmission based at least in part on receiving the first transmission at least a minimum interframe interval after a previous transmission, wherein the minimum interframe interval is a minimum interframe interval for contending for medium access for new transmissions according to the wireless communication technology;
attempt to decode the data frame;
determine that the attempt to decode the data frame is unsuccessful;
and
based at least in part on determining that the attempt to decode the data frame is unsuccessful, receive a retransmission of the data frame at a retransmission interval after the first transmission of the data frame, wherein the retransmission interval is less than a minimum interframe interval for contending for medium access for new transmissions according to the wireless communication technology, and wherein the retransmission interval has a duration equal to a point coordination function (PCF) interframe space (PIFS);
determine that the retransmission of the data frame is a retransmission of the data frame based at least in part on receiving the retransmission of the data frame at the retransmission interval that is after the first transmission of the data frame and equal to the PIFS and further based at least in part on recipient address information comprised in the data frame;
and
perform receive combining of the first transmission of the data frame and the retransmission of the data frame based at least in part on determining that the retransmission of the data frame is a retransmission of the data frame.

7 more elements

A wireless device, comprising:

an antenna;
a radio operably coupled to the antenna;
and
a processing element operably coupled to the radio;
wherein the antenna, radio, and processing element are configured to:
receive a data frame transmission according to a wireless communication technology;
determine that the data frame transmission is a new transmission if the interval between receiving the data frame transmission and receiving a previous data frame transmission comprises at least a minimum interframe interval for contending for medium access for new transmissions according to the wireless communication technology;
determine that the data frame transmission is a retransmission based at least in part on recipient address information comprised in the data frame and further based at least in part on the interval between receiving the data frame transmission and receiving the previous data frame transmission comprising a retransmission interval according to the wireless communication technology, wherein the retransmission interval has a duration equal to a point coordination function (PCF) interframe space (PIFS),
wherein the minimum interframe interval for contending for medium access for new transmissions is greater than the retransmission interval;
and
perform receive combining of the data frame transmission and one or more corresponding previously received data frame transmissions based at least in part on determining that the data frame transmission is a retransmission.

8 more elements

A method for operating a wireless device, comprising:

receiving a first transmission of a data frame according to a wireless communication technology;
determining that the first transmission is a new transmission based at least in part on receiving the first transmission at least a minimum interframe interval after a previous transmission, wherein the minimum interframe interval is a minimum interframe interval for contending for medium access for new transmissions according to the wireless communication technology;
attempting to decode the data frame;
determining that the attempt to decode the data frame is unsuccessful;
and
based at least in part on determining that the attempt to decode the data frame is unsuccessful, receiving a retransmission of the data frame at a retransmission interval after the first transmission of the data frame, wherein the retransmission interval is less than the minimum interframe interval for contending for medium access for new transmissions according to the wireless communication technology, and wherein the retransmission interval has a duration equal to a point coordination function (PCF) interframe space (PIFS);
determining that the retransmission of the data frame is a retransmission of the data frame based at least in part on receiving the retransmission of the data frame at the retransmission interval that is after the first transmission of the data frame and equal to the PIFS and further based at least in part on recipient address information comprised in the data frame;
and
performing receive combining of the first transmission of the data frame and the retransmission of the data frame based at least in part on determining that the retransmission of the data frame is a retransmission of the data frame.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/341,301Filed 2 Nov 2016 · us provisional application
Priority: 3 Nov 2015
Published: US 2017/0126364 A14 May 2017
Granted: 19 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 1/189
Arrangements specially adapted for the transmitter end: transmission or retransmission of more than one copy of a message
H04L 1/188
Arrangements specially adapted for the transmitter end: time-out mechanisms
H04L 1/1887
Arrangements specially adapted for the transmitter end: scheduling and prioritising arrangements
H04L 45/74
Routing or path finding of packets in data switching networks: address processing for routing

Family

Application62/250,160Us provisional application · filed 3 Nov 2015
US 2017/0126364 A1Pre-grant publication · published 4 May 2017
US 10,484,150 B2This patent

From the US filing history. Foreign family members aren’t listed.

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