Communication system, base station and terminal device

Abstract

Provided is a communication system with high reliability, etc. A communication system includes a base station, and a plurality of terminal devices configured to perform radio communication with the base station. When one slot includes a sounding reference signal (SRS) symbol range consisting of one or more symbols allocated to an SRS of a first terminal device, a first symbol range consisting of one or more symbols before the SRS symbol range, and a second symbol range consisting of one or more symbols after the SRS symbol range, a second terminal device different from the first terminal device performs uplink communication to the base station using at least one of the first symbol range and the second symbol range.

1 . A communication system, comprising:
 a base station; and   a plurality of terminal devices configured to perform radio communication with the base station,   wherein when one slot includes a sounding reference signal (SRS) symbol range consisting of one or more symbols allocated to an SRS of a first terminal device, a first symbol range consisting of one or more symbols before the SRS symbol range, and a second symbol range consisting of one or more symbols after the SRS symbol range, a second terminal device different from the first terminal device performs uplink communication to the base station using at least one of the first symbol range and the second symbol range.   
     
     
         2 . The communication system according to  claim 1 ,
 wherein when the SRS is transmitted in a first slot and the SRS is not transmitted in a second slot, the second terminal device performs the uplink communication in the second slot by reflecting the first symbol range and the second symbol range of the first slot to the second slot.   
     
     
         3 . The communication system according to  claim 1 ,
 wherein when a plurality of the first terminal devices transmit a plurality of the SRSs, the second terminal device performs the uplink communication outside a range from start of the SRS symbol range that is started earliest to end of the SRS symbol range that is ended latest in the one slot.   
     
     
         4 . The communication system according to  claim 1 ,
 wherein the second terminal device stops the uplink communication in the entire SRS symbol range.   
     
     
         5 . The communication system according to  claim 1 ,
 wherein the second terminal device stops the uplink communication in a part of the SRS symbol range, and performs the uplink communication in the remaining parts of the SRS symbol range.   
     
     
         6 . The communication system according to  claim 5 ,
 wherein the part of the SRS symbol range is at least one physical resource block (PRB) or at least one resource element (RE) which is allocated to the SRS.   
     
     
         7 . A base station configured to perform radio communication with a plurality of terminal devices,
 wherein when one slot includes a sounding reference signal (SRS) symbol range consisting of one or more symbols allocated to an SRS of a first terminal device, a first symbol range consisting of one or more symbols before the SRS symbol range, and a second symbol range consisting of one or more symbols after the SRS symbol range, the base station performs uplink communication with a second terminal device different from the first terminal device using at least one of the first symbol range and the second symbol range.   
     
     
         8 . A terminal device that performs radio communication with a base station configured to perform the radio communication with a plurality of terminal devices,
 wherein when one slot includes a sounding reference signal (SRS) symbol range consisting of one or more symbols allocated to an SRS of another terminal device, a first symbol range consisting of one or more symbols before the SRS symbol range, and a second symbol range consisting of one or more symbols after the SRS symbol range, the terminal device performs uplink communication using at least one of the first symbol range and the second symbol range.