Wireless communication system, wireless communication method, and base station

Patent metadata

Field	Value
Publication number	US-2020260357-A1
Application number	US-201916581022-A
Country	US
Kind code	A1
Filing date	Sep 24, 2019
Priority date	Feb 8, 2019
Publication date	Aug 13, 2020
Grant date	—

Abstract

A wireless communication system includes a first base station connectable to a backbone network by a wireless backhaul, and a path generator generating a wireless multi-hop path including the first base station and one or more second base stations connected to the first base station by a wireless multi-hop. The first base station reports a measurement result of a line quality of the wireless backhaul and a measurement result of a line quality between the first base station and the second base station disposed around the first base station. The first base station is switched to a first mode connected to the backbone network by the wireless backhaul or to a second mode connected to the second base station by a wireless multi-hop, in response to the path signal.

First claim

What is claimed is:

1 . A wireless communication system comprising:
at least one first base station connectable to a backbone network by a wireless backhaul; and a path generator generating a wireless multi-hop path including the first base station and one or more second base stations connected to the first base station by a wireless multi-hop, herein the first base station reports a first quality measurement result indicating a line quality of the wireless backhaul and a second quality measurement result indicating a line quality between the first base station and the second base station disposed around the first base station, to the path generator, wherein the path generator generates a path signal indicating the wireless multi-hop path and transmits the path signal to the first base station, based on the first quality measurement result and the second quality measurement result transmitted from the first base station, and wherein the first base station is switched to a first mode in which the first base station is connected to the backbone network by the wireless backhaul or to a second mode in which the first base station is connected to the second base station disposed therearound by a wireless multi-hop, in response to the path signal.

2 . The wireless communication system of claim 1 ,
wherein a third base station connected to the backbone network by a wire backhaul and connected to the one or more second base stations by a wireless multi-hop is further disposed on the wireless multi-hop path.

3 . The wireless communication system of claim 1 ,
wherein the first base station is switched to the second mode based on the path signal transmitted from the path generator after reporting the first quality measurement result smaller than a predetermined value.

4 . The wireless communication system of claim 3 ,
wherein the first base station transmits a data signal to each of an upstream side and a downstream side of the wireless multi-hop path through the wireless multi-hop, in the second mode.

5 . The wireless communication system of claim 1 ,
wherein the first base station is switched to the first mode based on the path signal transmitted from the path generator after reporting the first quality measurement result larger than or equal to a predetermined value.

6 . The wireless communication system of claim 3 ,
wherein the first base station transmits a data signal to an upstream side of the wireless multi-hop path through the wireless backhaul, and transmits a data signal to a downstream side of the wireless multi-hop path through the wireless multi-hop, in the first mode.

7 . A wireless communication method in a wireless communication system including at least one first base station connectable to a backbone network by a wireless backhaul, and a path generator generating a wireless multi-hop path including the first base station and one or more second base stations connected to the first base station by a wireless multi-hop, the wireless communication method comprising:
reporting a first quality measurement result indicating a line quality of the wireless backhaul and a second quality measurement result indicating a line quality between the first base station and the second base station disposed around the first base station, to the path generator by using the first base station; generating a path signal indicating the wireless multi-hop path and transmitting the path signal to the first base station by using the path generator, based on data signal including the first quality measurement result and the second quality measurement result transmitted from the first base station; and causing the first base station to be switched to a first mode in which the first base station is connected to the backbone network by the wireless backhaul or to a second mode in which the first base station is connected to the second base station disposed therearound by a wireless multi-hop, in response to the path signal.

8 . A base station connectable to a backbone network by a wireless backhaul, comprising:
a first communicator communicating with a path generator generating a wireless multi-hop path including the base station and one or more external base stations connected to the base station by a wireless multi-hop, through the wireless backhaul; a second communicator communicating with the external base station through the wireless multi-hop; a first measurer measuring a first quality indicating a line quality of the wireless backhaul; a second measurer measuring a second quality indicating a line quality between the base station and the external base station; and a controller performing switching to a first mode in which the base station is connected to the backbone network by the wireless backhaul, or to a second mode in which the base station is connected to the external base station by the wireless multi-hop in response to a path signal of the wireless multi-hop path transmitted from the path generator based on each measurement result of the first quality and the second quality.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Kato Osamu
• Kanemoto Hideki
• Asano Hiroaki

Classifications

• H04W40/22

  using selective relaying for reaching a BTS [Base Transceiver Station] or an access point · CPC title

• H04W40/12 Primary

  based on transmission quality or channel quality · CPC title

• H04L45/16

  Multipoint routing · CPC title

• H04W92/20

  between access points · CPC title

• H04W24/02 Primary

  Arrangements for optimising operational condition · CPC title