Base station-side and user equipment-side apparatuses and methods, and wireless communication system

Abstract

Base station-side and user equipment-side apparatuses and methods, and a wireless communication system, for use in wireless communication. The base station-side apparatus for use in wireless communication includes: a setting unit, configured to set different priority levels for using uplink transmission resources on unauthorized band with respect to a plurality of user equipment; and a generating unit, configured to generate an uplink scheduling authorization for using one same uplink transmission resource on the unauthorized band with respect to each user equipment, wherein each uplink scheduling authorization includes information about a priority level of the corresponding user equipment.

1 . An apparatus for a base station side of wireless communications, comprising:
 a setting unit, configured to set, for a plurality of user equipment, different priority levels for the user equipment to use uplink transmission resources on an unlicensed frequency band; and   a generating unit, configured to generate, for each of the user equipment, an uplink scheduling grant to use the same uplink transmission resources on the unlicensed frequency band, wherein, each uplink scheduling grant contains information of the priority level of the corresponding user equipment.   
     
     
         2 . The apparatus according to  claim 1 , further comprising:
 a transceiving unit, configured to transmit to each of the plurality of user equipment information of the uplink scheduling grant corresponding to the user equipment.   
     
     
         3 . The apparatus according to  claim 2 , wherein, the transceiving unit is further configured to receive, from the user equipment for which the uplink scheduling grant is valid, the information of the priority level of the user equipment, so that the apparatus identifies, from the information of the priority level, the user equipment for which the uplink scheduling grant is valid. 
     
     
         4 - 5 . (canceled) 
     
     
         6 . The apparatus according to  claim 1 , wherein, the setting unit is configured to set the priority level according to at least one of:
 an uplink traffic amount of the user equipment, and   uplink QoS of the user equipment.   
     
     
         7 - 8 . (canceled) 
     
     
         9 . The apparatus according to  claim 1 , further comprising:
 an energy detecting unit, configured to perform energy detection on the unlicensed frequency band, and cause the setting unit and the generating unit to perform respective operations in a case that the energy detection indicates that the unlicensed frequency band is idle.   
     
     
         10 . (canceled) 
     
     
         11 . An apparatus for a user equipment side of wireless communications, comprising:
 an energy detecting unit, configured to, in response to an uplink scheduling grant of uplink transmitting resources on an unlicensed frequency band and which is with respect to user equipment, perform energy detection on the unlicensed frequency band, wherein the uplink scheduling grant comprises information of priority level for the user equipment to use the uplink transmitting resources; and   a determining unit, configured to determine, according to the information of the priority level and a result of the energy detection, whether the uplink scheduling grant is valid.   
     
     
         12 . The apparatus according to  claim 11 , further comprising:
 a transceiving unit, configured to receive information of the uplink scheduling grant from a base station side.   
     
     
         13 . The apparatus according to  claim 12 , wherein, the determining unit is configured to determine that the uplink scheduling grant is valid, in a case that the user equipment has the highest priority level and the energy detection indicates that the unlicensed frequency band is idle,
 wherein, the determining unit is configured to determine whether the uplink scheduling grant is valid according to information of priority level of at least one second user equipment, in a case that the user equipment does not have the highest priority level and the energy detection indicates that the unlicensed frequency band is idle, wherein, the at least one second user equipment performs energy detection in response to other uplink scheduling grant for the same uplink transmitting resources and detects that the unlicensed frequency band is idle.   
     
     
         14 . (canceled) 
     
     
         15 . The apparatus according to  claim 13 , wherein, the determining unit is configured to determine that the uplink scheduling grant for the user equipment is valid, in a case that each of the at least one second user equipment has a priority level lower than the priority level of the user equipment. 
     
     
         16 . The apparatus according to  claim 13 , wherein, the transceiving unit is further configured to transmit a notification of the uplink scheduling grant being valid to other user equipment, wherein, the other user equipment receive other uplink scheduling grants for the same uplink transmitting resources. 
     
     
         17 . The apparatus according to  claim 16 , wherein, the transceiving unit is configured to transmit the notification at predetermined time-frequency resources, so that the other user equipment determine, when not receiving the notification at the predetermined time-frequency resources, that the user equipment cannot use the uplink transmitting resources. 
     
     
         18 . The apparatus according to  claim 15 , wherein,
 the transceiving unit is configured to receive from a primary user equipment at predetermined time-frequency resources a notification of the uplink scheduling grant being valid, wherein the primary user equipment receives another uplink scheduling grant for the same uplink transmitting resources and has the highest priority level, and   the transceiving unit is configured to interchange with the second user equipment the information of the priority level when the transceiving unit fails to receive the notification at the predetermined time-frequency resources.   
     
     
         19 . The apparatus according to  claim 17 , wherein, the predetermined time-frequency resources are located at the first symbol of a PUSCH sub-frame corresponding to the uplink scheduling grant or the last symbol of a sub-frame previous to a PUSCH sub-frame corresponding to the uplink scheduling grant. 
     
     
         20 . The apparatus according to  claim 19 , wherein, in a case that the notification is transmitted on the unlicensed frequency band and a sub-frame previous to the PUSCH sub-frame is a downlink sub-frame, the downlink sub-frame is configured to be one of:
 a truncated physical downlink shared channel sub-frame,   a special sub-frame, and   a special sub-frame keeping only DwPTS.   
     
     
         21 . The apparatus according to  claim 17 , wherein, the transceiving unit is configured to receive or transmit the notification via D2D communication or via broadcast. 
     
     
         22 . The apparatus according to  claim 15 , wherein, the transceiving unit is further configured to transmit the information of the priority level of the user equipment to the base station. 
     
     
         23 - 29 . (canceled) 
     
     
         30 . A wireless communication method for a wireless communication system, comprising:
 configuring downlink control information, the downlink control information comprising downlink sub-frames for transmission on an unlicensed frequency band;   wherein the last downlink sub-frame of the downlink sub-frames is configured as a special sub-frame or a special sub-frame including only DwPTS.   
     
     
         31 . The wireless communication method of  claim 30 , wherein the last downlink sub-frame is a sub-frame previous to a PUSCH sub-frame. 
     
     
         32 . The wireless communication method of  claim 30 , further comprising transmitting the downlink control information to a user equipment.