Multi-level indicator of radio resource status for intended D2D transmission

Patent metadata

Field	Value
Publication number	US-11711807-B2
Application number	US-201816088669-A
Country	US
Kind code	B2
Filing date	Jul 9, 2018
Priority date	Jul 9, 2018
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

A radio device receives a first message from a further radio device. The first message indicates an intention of the further radio device to perform a device-to-device radio transmission on a set of radio resources. The radio device determines a status of the set of radio resources. In response to the first message, the radio device sends a second message comprising an indicator which indicates the determined status of the set of radio resources in terms of at least three levels.

First claim

The invention claimed is:

1. A method of controlling device-to-device communication in a wireless communication network, the method comprising:
a radio device receiving a first message from a further radio device, the first message indicating an intention of the further radio device to perform a device-to-device, D2D, radio transmission on a set of radio resources;
the radio device determining a status of the set of radio resources; and
in response to the first message, the radio device sending a second message comprising an indicator which indicates the determined status of the set of radio resources in terms of at least three levels, wherein the at least three levels comprises at least three levels of received signal strength of a measured signal on the set of radio resources and the indicator is based on a capability of the radio device to successfully receive and decode an intended device-to-device radio transmission based on the interfering signal strength on the set of radios resources or the congestion level on the set of radio resources,
wherein a first level of the at least three levels indicates a positive acknowledgement that the radio device approves the D2D radio transmission on the set of radio resources and another level of the at least three levels indicates a negative acknowledgment that the radio device disapproves the D2D radio transmission on the set of radio resources.

2. The method according to claim 1 , wherein the at least three levels represent different signal levels detected on the set of radio resources, wherein at least one of the levels indicates that the set of radio resources is at least partially occupied, and/or wherein at least one of the levels indicates that the set of radio resources is unoccupied.

3. The method according to claim 1 , comprising:
the radio device determining the status of the set of radio resources depending on one or more of an intention of the radio device to perform a device-to-device radio transmission on the set of radio resources, a priority of the device-to-device radio transmission by the radio device, and/or a priority of the device-to-device radio transmission by the further radio device.

4. The method according to claim 1 , comprising:
depending on the determined status of the set of radio resources, the radio device determining an alternative set of radio resources to be used for the device-to-device radio transmission,
wherein the second message indicates the alternative set of radio resources.

5. The method according to claim 1 , comprising:
the radio device receiving a third message from another further radio device, the third message indicating an intention of the other further radio device to perform a device-to-device radio transmission on the set of radio resources; and
the radio device determining the status of the set of radio resources depending on the third message.

6. The method according to claim 5 , comprising:
in response to detecting the intention of the further radio device to perform a device-to-device radio transmission on the set of radio resources and the intention of the other further radio device to perform a device-to-device radio transmission on the set of radio resources, the radio device sending a fourth message indicating an intention of the radio device to perform a device-to-device radio transmission on the set of radio resources.

7. A computer program product comprising a non-transitory storage medium including program code to be executed by at least one processor of a radio device, whereby execution of the program code causes the radio device to perform a method according to claim 1 .

8. A method of controlling device-to-device communication in a wireless communication network, the method comprising:
a radio device sending a first message to a further radio device, the first message indicating an intention of the radio device to perform a device-to-device, D2D, radio transmission on a set of radio resources;
in response to the first message, the radio device receiving a second message comprising an indicator which indicates a status of the set of radio resources as determined by the further radio device in terms of at least three levels, wherein the at least three levels comprises at least three levels of received signal strength of a measured signal on the set of radio resources and the indicator is based on a capability of the further radio device to successfully receive and decode an intended D2D radio transmission based on the interfering signal strength on the set of radios resources or the congestion level on the set of radio resources, wherein a first level of the at least three levels indicates a positive acknowledgement that the further radio device approves the D2D radio transmission on the set of radio resources and another level of the at least three levels indicates a negative acknowledgment that the further radio device disapproves the D2D radio transmission on the set of radio resources; and
depending on the indicator, the radio device controlling the D2D radio transmission by the radio device.

9. The method according to claim 8 , wherein the at least three levels represent different signal levels detected on the set of radio resources, wherein at least one of the levels indicates that the set of radio resources is at least partly occupied, and/or wherein at least one of the levels indicates that the set of radio resources is unoccupied.

10. The method according to claim 8 , wherein the indicator depends on one or more of an intention of the radio device to perform a device-to-device radio transmission on the set of radio resources, a priority of the device-to-device radio transmission by the radio device, and/or a priority of the device-to-device radio transmission by the further radio device.

11. The method according to claim 8 ,
wherein the second message indicates an alternative set of radio resources to be used for the device-to-device radio transmission, and
wherein said controlling of the device-to-device radio transmission by the radio device comprises controlling the device-to-device radio transmission by the radio device to be performed on the alternative set of radio resources.

12. A radio device for a wireless communication network, the radio device comprising:
a processor; and
memory coupled with the processor, said memory containing instructions executable by said processor whereby said radio device is operative to:
receive a first message from a further radio device, the first message indicating an intention of the further radio device to perform a device-to-device, D2D, radio transmission on a set of radio resources;
determine a status of the set of radio resources; and
in response to the first message, send a second message comprising an indicator which indicates the determined status of the set of radio resources in terms of at least three levels, wherein the at least three levels comprises at least three levels of received signal strength of a measured signal on the set of radio resources and the indicator is based on a capability of the radio device to successfully receive and decode an intended D2D radio transmission based on the interfering signal strength on the set of radios resources or the congestion level on the set of radio resources,
wherein a first level of the at least three levels indicates a positive acknowledgement that the radio device approves the D2D radio transmission on the set of radio resources and another level of the at least three levels indicates a negative acknowledgment that the radio device disapproves the D2D radio transmission on the set of radio resources.

13. A computer program

Assignees

• Ericsson Telefon Ab L M

Inventors

• Belleschi Marco
• Ashraf Shehzad Ali
• Blasco Serrano Ricardo
• Fodor Gabor
• Sun Wanlu
• Zhang Chunhui

Classifications

• H04W72/20 Primary

  Control channels or signalling for resource management · CPC title

• H04W92/18

  between terminal devices · CPC title

• H04W76/14 Primary

  Direct-mode setup · CPC title

• H04W72/542

  using measured or perceived quality · CPC title