Wireless communication system, base station, and wireless communication method

Patent metadata

Field	Value
Publication number	US-9313671-B2
Application number	US-201313960376-A
Country	US
Kind code	B2
Filing date	Aug 6, 2013
Priority date	Sep 6, 2012
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

A wireless communication system including: a terminal, and a base station including an antenna configured to perform wireless communication with the terminal, and a processor configured to perform, when a difference between a first throughput at a radio layer for the wireless communication and a second throughput at an upper layer to the radio layer for the wireless communication is larger than a given value, a processing to decrease errors at a radio layer for the wireless communication.

First claim

What is claimed is:

1. A wireless communication system comprising:
a terminal; and
a base station including
an antenna configured to perform wireless communication with the terminal, and
a processor configured to perform, when a first throughput at a radio layer for the wireless communication is larger than a second throughput at an upper layer to the radio layer for the wireless communication due to retransmission control at the radio layer, a processing to decrease errors at the radio layer for the wireless communication.

2. The wireless communication system according to claim 1 , wherein the first throughput is calculated based on an error rate at the radio layer for the wireless communication.

3. The wireless communication system according to claim 1 , wherein the processing includes control for increasing transmission power for the wireless communication.

4. The wireless communication system according to claim 1 , wherein the processing includes control for decreasing a code rate for the wireless communication.

5. The wireless communication system according to claim 1 , wherein the processing includes control for decreasing a degree of a modulation for the wireless communication.

6. The wireless communication system according to claim 1 , wherein the processor is further configured to optimize the second throughput.

7. The wireless communication system according to claim 1 , wherein the second throughput is calculated based on a first round trip time between the terminal and the base station and a second round trip time between the terminal and an upper apparatus to the base station.

8. A base station comprising:
an antenna configured to perform wireless communication with the terminal; and
a processor configured to perform, when a first throughput at a radio layer for the wireless communication is larger than a second throughput at an upper layer to the radio layer for the wireless communication due to retransmission control at the radio layer, a processing to decrease errors at the radio layer for the wireless communication.

9. A wireless communication method comprising:
performing by a base station, wireless communication with the terminal; and
performing by the base station, when a first throughput at a radio layer for the wireless communication is larger than a second throughput at an upper layer to the radio layer for the wireless communication due to retransmission control at the radio layer, a processing to decrease errors at the radio layer for the wireless communication.

10. The wireless communication system according to claim 1 , wherein the processing further includes changing at least one of a code rate of data and a modulation method between the terminal and the base station.

11. The wireless communication system according to claim 1 , wherein the second throughput comprises a transmission control protocol (TCP) throughput.

12. The wireless communication system according to claim 7 , wherein the first round trip time between the terminal and the base station is based at least in part on a wireless error rate or a retransmission delay.

13. The wireless communication system according to claim 7 , wherein the second round trip between the terminal and the upper apparatus is based on at least one or more response request signaling messages with an upper network.

14. The wireless communication system according to claim 1 , wherein the first throughput is larger than the second throughput due to retransmission time out of the retransmission control.

Assignees

• Fujitsu Ltd

Inventors

• Yokoyama Hitoshi

Classifications

• H04L1/0009

  by adapting the channel coding (H04L1/1812 takes precedence) · CPC title

• H04L1/0003

  by switching between different modulation schemes · CPC title

• H04L1/0002

  by adapting the transmission rate · CPC title

• H04W52/267

  taking into account the information rate · CPC title

• H04W52/262

  taking into account adaptive modulation and coding [AMC] scheme · CPC title