Electronic apparatus, wireless communication method and computer-readable medium

Abstract

The present disclosure relates to an electronic apparatus, a wireless communication method and a computer-readable medium. According to one embodiment, an electronic apparatus for wireless communication comprises: a processing circuit configured to: determine whether a first user equipment satisfies a condition for performing direct link communication with a second user equipment by using an unlicensed frequency band resource; and if the condition is satisfied, control the first user equipment to perform direct link communication with the second user equipment by using the unlicensed frequency band resource.

1 . An electronic device for wireless communication, comprising processing circuitry configured to:
 determine whether a first user equipment satisfies a condition for performing a sidelink communication with a second user equipment using an unlicensed band resource; and   control the first user equipment to perform the sidelink communication with the second user equipment using the unlicensed band resource if the condition is satisfied.   
     
     
         2 . The electronic device according to  claim 1 , wherein the condition is related to one or more of the followings:
 a service priority of the sidelink communication to be performed;   a current link quality between the first user equipment and the second user equipment;   the number of failures of Listen Before Talk performed by the first user equipment and/or the second user equipment previously with respect to the unlicensed band resource;   a battery level of the first user equipment and/or the second user equipment; and   a delay generated in the course of a base station transmitting information, which is to be forwarded by one of the first user equipment and the second user equipment to the other thereof, to said one of the first user equipment and the second user equipment.   
     
     
         3 . The electronic device according to  claim 2 , wherein the service priority comprises ProSe Per-Packet Priority (PPPP). 
     
     
         4 . The electronic device according to  claim 2 , wherein the link quality comprises Reference Signal Receiving Power (RSRP). 
     
     
         5 . The electronic device according to  claim 2 , wherein the number of failures comprises the number of subframes for which Listen Before Talk fails within a previous time window having a predetermined length. 
     
     
         6 . The electronic device according to  claim 2 , wherein the delay comprises a delay due to that the base station performs Listen Before Talk with respect to the unlicensed band resource used for transmitting the information. 
     
     
         7 . The electronic device according to  claim 1 , wherein the processing circuitry is further configured to determine an acquisition manner of the unlicensed band resource according to first indication information from a base station, and the acquisition manner comprises:
 specifying the unlicensed band resource by the base station; or   selecting the unlicensed band resource by a user equipment from a configured resource pool or a resource pool list.   
     
     
         8 .- 9 . (canceled) 
     
     
         10 . The electronic device according to  claim 1 , wherein the processing circuitry is further configured to determine the unlicensed band resource used for the sidelink communication according to second indication information from a base station. 
     
     
         11 . The electronic device according to  claim 10 , wherein the second indication information is transmitted through a Physical Downlink Control Channel (PDCCH). 
     
     
         12 . (canceled) 
     
     
         13 . The electronic device according to  claim 1 , wherein one of the first user equipment and the second user equipment operates as a relay user equipment, and the other of the first user equipment and the second user equipment operates as a remote user equipment, wherein the remote user equipment receives information from a base station via the relay user equipment. 
     
     
         14 . The electronic device according to  claim 13 , wherein the relay user equipment forwards to the remote user equipment at least one of:
 information indicating the unlicensed band resource used for the sidelink communication; and   information indicating a resource pool of the unlicensed band resource used for the sidelink communication, or   wherein the relay user equipment receives from the base station information indicating the unlicensed band resource used for the sidelink communication, and notifies the indicated unlicensed band resource to the remote user equipment, or   wherein the relay user equipment receives from the base station information indicating a resource pool of the unlicensed band resource used for the sidelink communication, selects the unlicensed band resource used for the sidelink communication for the remote user equipment, and notifies the remote user equipment of the selected unlicensed band resource, or   wherein the relay user equipment notifies the remote user equipment of unlicensed band resource which has been allocated to the relay user equipment, or   wherein the relay user equipment performs Listen Before Talk with respect to unlicensed band resource to be allocated to the remote user equipment, and notifies the remote user equipment of a unlicensed channel which is successfully accessed.   
     
     
         15 .- 18 . (canceled) 
     
     
         19 . The electronic device according to  claim 14 , wherein the relay user equipment performs the notification through a Physical Sidelink Control Channel (PSCCH). 
     
     
         20 . The electronic device according to  claim 1 , wherein the processing circuitry is further configured to select the unlicensed band resource used for the sidelink communication, based on zone configuration information. 
     
     
         21 . The electronic device according to  claim 1 , wherein the processing circuitry is further configured to: perform control to transmit information indicating Maximum Channel Occupancy Time (MCOT) of unlicensed band resource occupied by the first user equipment to the second user equipment, to share the MCOT with the second user equipment. 
     
     
         22 . The electronic device according to  claim 13 , wherein the relay user equipment receives from the base station information on Maximum Channel Occupancy Time (MCOT) of unlicensed band resource for a cellular link, and performs sidelink communication with the remote user equipment using the unlicensed band resource within the MCOT. 
     
     
         23 . The electronic device according to  claim 21 , wherein the Maximum Channel Occupancy Time (MCOT) of the unlicensed band resource occupied by the first user equipment is used for sidelink discovery. 
     
     
         24 . (canceled) 
     
     
         25 . An electronic device for wireless communication, comprising processing circuitry configured to:
 control a first user equipment to perform a sidelink communication with a second user equipment using unlicensed band resource; and   perform control to transmit information indicating Maximum Channel Occupancy Time (MCOT) of unlicensed band resource occupied by the first user equipment to the second user equipment, to share the MCOT with the second user equipment.   
     
     
         26 . The electronic device according to  claim 25 , wherein one of the first user equipment and the second user equipment operates as a relay user equipment, and the other of the first user equipment and the second user equipment operates as a remote user equipment, wherein the remote user equipment receives information from a base station via the relay user equipment, and
 the relay user equipment receives from the base station information on Maximum Channel Occupancy Time (MCOT) of unlicensed band resource for a cellular link, and performs sidelink communication with the remote user equipment using the unlicensed band resource within the MCOT.   
     
     
         27 . The electronic device according to  claim 25 , wherein the Maximum Channel Occupancy Time (MCOT) of the unlicensed band resource occupied by the first user equipment is used for sidelink discovery. 
     
     
         28 . (canceled) 
     
     
         29 . An electronic device for wireless communication, comprising processing circuitry configured to:
 perform control to transmit indication information to a user equipment,   wherein the indication information indicates an acquisition manner of unlicensed band resource used for a sidelink communication of the user equipment, or   the indication information indicates the unlicensed band resource.   
     
     
         30 .- 32 . (canceled)