Methods and apparatuses for performing uplink scheduling and ul transmission

Abstract

Embodiments of the present disclosure relate to a method and apparatus for performing UL scheduling and a method and apparatus for perform UL transmission. In an embodiment of the present disclosure, the method of performing UL scheduling comprises determining at least two modes for the UL scheduling based on the number of downlink (DL) subframes and the number of UL subframes, wherein the at least two modes indicate different scheduling time delays.

What is claimed is: 
     
         1 . A method performed by a user equipment (UE), the method comprising:
 receiving, from a base station,
 a first parameter with a first value in a first Downlink Control Information (DCI) format in subframe n, wherein the first DCI format is for scheduling Physical Uplink Shared Channel (PUSCH) transmission in each of multiple subframes in an unlicensed spectrum, the first DCI format being different from DCI format 1C, and 
 a second parameter in DCI format 1C,
 wherein, whether an offset from the subframe n: is equal to a predetermined value; or is an offset value determined by the base station, is based on the first value, 
 and wherein duration of the PUSCH transmission in subframes is determined based on the second parameter; and 
 
   performing the PUSCH transmission in the multiple subframes, based on the first parameter and the second parameter.   
     
     
         2 . The method of  claim 1 , wherein the PUSCH transmission is performed after performing Listen Before Talk (LBT) procedures. 
     
     
         3 . The method of  claim 1 , wherein the PUSCH transmission starts within a symbol of a subframe. 
     
     
         4 . The method of  claim 1 , wherein the PUSCH transmission occupies one or more continuous subframes. 
     
     
         5 . A method performed by base station, the method comprising:
 sending, to a user equipment (UE),
 a first parameter with a first value in a first Downlink Control Information (DCI) format in subframe n, wherein the first DCI format is for scheduling Physical Uplink Shared Channel (PUSCH) transmission in each of multiple subframes in an unlicensed spectrum, the first DCI format being different from DCI format 1C, and 
 a second parameter in DCI format 1C,
 wherein, whether an offset from the subframe n: is equal to a predetermined value; or is an offset value determined by the base station, is based on the first value, 
 and wherein duration of the PUSCH transmission in subframes is determined based on the second parameter; and 
 
   receiving the PUSCH transmission in the multiple subframes, based on the first parameter and the second parameter.   
     
     
         6 . The method of  claim 5 , wherein the PUSCH transmission is received after the UE performing Listen Before Talk (LBT) procedures. 
     
     
         7 . The method of  claim 5 , wherein the PUSCH transmission starts within a symbol of a subframe. 
     
     
         8 . The method of  claim 5 , wherein the PUSCH transmission occupies one or more continuous subframes.