Data transmission throughput for a wireless access node

Patent metadata

Field	Value
Publication number	US-9307419-B1
Application number	US-201313789146-A
Country	US
Kind code	B1
Filing date	Mar 7, 2013
Priority date	Mar 7, 2013
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A wireless access node to improve data transmission throughput comprises a wireless communication transceiver and a processing system. The wireless access node transmits a first data packet comprising a preamble for delivery to a wireless communication device during a first timeslot, monitors for a response transmitted from the wireless communication device during a predetermined number of timeslots, and if the response transmitted from the wireless communication device is not received during the predetermined number of timeslots, modify the preamble to generate a modified preamble, retransmit the first data packet with the modified preamble for delivery to the wireless communication device during a second timeslot, and if an acknowledgement of receipt of the first data packet with the modified preamble is received from the wireless communication device during the predetermined number of timeslots, transmit a second data packet for delivery to the wireless communication device during a third timeslot.

First claim

What is claimed is:

1. A method of operating a wireless access node to wirelessly transmit user data to a wireless communication device, the method comprising:
separating the user data into a first Hybrid Automatic Repeat Request (HARQ) packet and a second HARQ packet;
wirelessly transmitting the first HARQ packet with a preamble at a first modulation rate during a first HARQ time slot in a first HARQ frame;
if a Negative Acknowledgement (NACK) is received from the wireless communication device for the first HARQ packet, then wirelessly retransmitting the first HARQ packet having the preamble at a second modulation rate that is lower than the first modulation rate during a first HARQ time slot in a second HARQ frame and not wirelessly retransmitting the first HARQ packet during the first HARQ frame; and
if an Acknowledgement (ACK) is received from the wireless communication device for the first HARQ packet, then wirelessly transmitting the second HARQ packet without any preamble during the first HARQ time slot in the second HARQ frame and not wirelessly retransmitting the second HARQ packet during the second HARQ frame.

2. The method of claim 1 further comprising, if the ACK is received from the wireless communication device for the first HARQ packet, then separating additional user data into additional HARQ packets and wirelessly transmitting the additional HARQ packets without any preamble during first HARQ time slots in additional HARQ frames and not wirelessly retransmitting same ones of the additional HARQ packets during same ones of the additional HARQ frames.

3. The method of claim 2 further comprising, if the ACK is received from the wireless communication device for the first HARQ packet having the preamble at a second modulation rate that is lower than the first modulation rate during a first HARQ time slot in a second HARQ frame, then separating additional user data into additional HARQ packets and wirelessly transmitting the additional HARQ packets without any preamble during first HARQ time slots in additional HARQ frames and not wirelessly retransmitting same ones of the additional HARQ packets during same ones of the additional HARQ frames.

4. The method of claim 3 wherein the wireless access node comprises a Long Term Evolution (LTE) network access node.

5. A wireless access node to wirelessly transmit user data to a wireless communication device comprising:
a wireless communication transceiver;
a processing system configured to separate the user data into a first Hybrid Automatic Repeat Request (HARQ) packet and a second HARQ packet, direct the wireless communication transceiver to wirelessly transmit the first HARQ packet with a preamble at a first modulation rate during a first HARQ time slot in a first HARQ frame;
if a Negative Acknowledgement (NACK) is received from the wireless communication device for the first HARQ packet by the wireless communication transceiver, then the processing system is configured to direct the wireless communication transceiver to wirelessly retransmit the first HARQ packet having the preamble at a second modulation rate that is lower than the first modulation rate during a first HARQ time slot in a second HARQ frame wherein the first HARQ packet is not wirelessly retransmitted during the first HARQ frame; and
if an Acknowledgement (ACK) is received from the wireless communication device for the first HARQ packet by the wireless communication transceiver, then the processing system is configured to direct the wireless communication transceiver to wirelessly transmit the second HARQ packet without any preamble during the first HARQ time slot in the second HARQ frame wherein the second HARQ packet is not wirelessly retransmitted during the second HARQ frame.

6. The wireless access node of 5 further comprising, if the ACK is received from the wireless communication device for the first HARQ packet by the wireless communication transceiver, then the processing system is configured to separate additional user data into additional HARQ packets and to direct the wireless communication transceiver to wirelessly transmit the additional HARQ packets without any preamble during first HARQ time slots in additional HARQ frames wherein the same ones of the additional HARQ packets are not wirelessly retransmitted during the same ones of the additional HARQ frames.

7. The wireless access node of claim 5 further comprising, if the ACK is received from the wireless communication device for the first HARQ packet having the preamble at a second modulation rate that is lower than the first modulation rate during a first HARQ time slot in a second HARQ frame by the wireless communication transceiver, then the processing system is configured to separate additional user data into additional HARQ packets and to direct the wireless communication transceiver to wirelessly transmit the additional HARQ packets without any preamble during first HARQ time slots in additional HARQ frames wherein the same ones of the additional HARQ packets are not wirelessly retransmitted during the same ones of the additional HARQ frames.

8. The wireless access node of claim 5 wherein the wireless access node comprises a Long Term Evolution (LTE) network access node.

Assignees

• Sprint Communications Co

Inventors

• Singh Jasinder Pal
• Shah Maulik K
• Goyal Sandeep

Classifications

• H04W24/02 Primary

  Arrangements for optimising operational condition · CPC title

• H04L1/0003 Primary

  by switching between different modulation schemes · CPC title

• H04L1/1887

  Scheduling and prioritising arrangements · CPC title

• H04L1/1819

  with retransmission of additional or different redundancy · CPC title