Signaling method for sharing unlicensed spectrum between different radio access technologies and related apparatuses using the same

Patent metadata

Field	Value
Publication number	US-9888388-B2
Application number	US-201514863463-A
Country	US
Kind code	B2
Filing date	Sep 24, 2015
Priority date	Oct 3, 2014
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

The disclosure is directed to a signaling method for sharing an unlicensed spectrum between different radio access technologies used by a base station and a multi-mode wireless device, a multi-mode wireless device using the same method, and a base station using the same method. According to one of the exemplary embodiments, the disclosure is directed to a signaling method for sharing an unlicensed spectrum between different radio access technologies used by a base station. The method may include not limited to receiving a first transmission via a receiver of a first radio access technology over an unlicensed spectrum, calculating a channel information of the first transmission in response to receiving the first transmission, configuring a second transmission based on the first channel information of the first transmission, and transmitting the second transmission via a transmitter of a second radio access technology over the unlicensed spectrum.

First claim

What is claimed is:

1. A signaling method for sharing an unlicensed spectrum between different radio access technologies used by a base station that supports multiple radio access technologies, the method comprising:
receiving a first transmission via a receiver of a first radio access technology over an unlicensed spectrum by overhearing a third transmission that is transmitted from a first multi-mode wireless device intended toward a second wireless device which is not the base station;
calculating a first channel information of the first transmission in response to receiving the first transmission;
configuring a second transmission based on the first channel information of the first transmission; and
transmitting the second transmission via a transmitter of a second radio access technology over the unlicensed spectrum.

2. The method of claim 1 , wherein before transmitting the second transmission, claim 1 further comprising:
transmitting a fourth transmission which comprises the first channel information to the first multi-mode wireless device via the transmitter of the second radio access technology over the unlicensed spectrum.

3. The method of claim 1 further comprising:
transmitting via a transmitter of the first radio access technology a fifth transmission to a first wireless device over the unlicensed spectrum; and
receiving via a receiver of the second radio access technology a sixth transmission from a second multi-mode wireless device over the unlicensed spectrum.

4. The method of claim 3 further comprising:
receiving via a receiver a feedback information of the fifth transmission from the second multi-mode wireless device over the unlicensed spectrum, wherein the feedback information comprises a second channel information from the base station to the second multi-mode wireless device;
configuring a seventh transmission based on the second channel information; and
transmitting the seventh transmission via the transmitter of the second radio access technology over the unlicensed spectrum.

5. The method of claim 1 , wherein the first radio access technology is either LTE-U or Wi-Fi, and the second radio access technology is different from the first radio access technology and is either LTE-U or Wi-Fi.

6. The method of claim 5 , wherein before receiving the first transmission by overhearing the third transmission, claim 5 further comprising:
determining whether a co-located indicator within a capability signaling message has been set as active; and
correlating the first transmission to the third transmission in response to determining that the co-located indicator is set as active.

7. The method of claim 1 , wherein before receiving the first transmission by overhearing the third transmission, claim 1 further comprising:
transmitting a capability signaling message to indicate support for multiple radio access technologies.

8. The method of claim 7 , wherein the capability signaling message is embedded with a system information block and further comprising a mapping entry which correlates information between the first radio access technology and the second radio access technology.

9. A multi-mode base station capable of supporting multiple radio access technologies, the base station comprising:
a receiver of a first radio access technology configured for receiving a first transmission over an unlicensed spectrum by overhearing a third transmission that is transmitted from a first multi-mode wireless device intended toward a second wireless device which is not the base station;
a processor coupled to the receiver and is configured for calculating a channel information of the first transmission in response to receiving the first transmission; and configuring a second transmission based on the channel information of the first transmission; and
a transmitter of a second radio access technology coupled to the processor and is configured for transmitting the second transmission over the unlicensed spectrum.

10. The base station of claim 9 , wherein before transmitting the second transmission, the transmitter of the second radio access technology further transmits a fourth transmission which comprises the first channel information to the first multi-mode wireless device via the second radio access technology over the unlicensed spectrum.

11. The base station of claim 9 further comprising:
a transmitter of the first radio access technology coupled to the processor and is configured for transmitting a fifth transmission to a first wireless device over the unlicensed spectrum; and
a receiver of the second radio access technology configured for receiving a sixth transmission from a second multi-mode wireless device over the unlicensed spectrum.

12. The base station of claim 11 , the receiver of the second radio access technology receives a feedback information of the fifth transmission from the second multi-mode wireless device over the unlicensed spectrum, wherein the feedback information comprises a second channel information from the base station to the second multi-mode wireless device; and
the transmitter of the second radio access technology is configured for transmitting a seventh transmission over the unlicensed spectrum based on the second channel information.

13. The base station of claim 9 , wherein the first radio access technology is either LTE-U or Wi-Fi, and the second radio access technology is different from the first radio access technology and is either LTE-U or Wi-Fi.

14. The base station of claim 13 , wherein before the receiver of the first radio access technology receives the first transmission by overhearing the third transmission, the processor further configured to:
determining whether a co-located indicator within a capability signaling message has been set as active; and
correlating the first transmission to the third transmission in response to determining that the co-located indicator is set as active.

15. The base station of claim 9 further transmits a capability signaling message to indicate support for multiple radio access technologies before the receiver of the first radio access technology receives the first transmission by overhearing the third transmission.

16. The base station of claim 15 , wherein the capability signaling message is embedded with a system information block and further comprising a mapping entry which correlates information between the first radio access technology and the second radio access technology.

17. A signaling method for sharing an unlicensed spectrum between different radio access technologies used by a multi-mode wireless device which supports multiple radio access technologies, the method comprising:
receiving a first transmission via a receiver of a first radio access technology over an unlicensed spectrum by overhearing a third transmission that is transmitted from a base station intended toward another wireless device which is not the multi-mode wireless device;
calculating a first channel information of the first transmission in response to receiving the first transmission;
configuring a second transmission based on the first channel information of the first transmission; and
transmitting the second transmission via a transmitter of a second radio access technology over the unlicensed spectrum.

18. The method of claim 17 further comprising:
determining whether a co-located indicator within a capability signaling message has been set as active; and
correlating the first transmission to the third transmission in response to determining that the c

Assignees

• Acer Inc

Inventors

• Wei Hung Yu

Classifications

• H04W84/042

  Public Land Mobile systems, e.g. cellular systems · CPC title

• H04W72/20

  Control channels or signalling for resource management · CPC title

• H04W16/14 Primary

  Spectrum sharing arrangements {between different networks} · CPC title

• H04W88/06

  adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title