UPLINK TRANSMISSION METHOD AND APPARATUS

1 . An uplink transmission apparatus comprising:

processor circuitry configured to determine a duration of cyclic prefix extension according to an integer parameter and a length of symbols preceding a first symbol of an uplink transmission; and

a transmitter configured to transmit the cyclic prefix extension and the uplink transmission.

2 . The uplink transmission apparatus according to claim 1 , wherein

the integer parameter represents the number of the symbols preceding the first symbol of the uplink transmission and is used for determining the duration of the cyclic prefix extension.

3 . The uplink transmission apparatus according to claim 1 , further comprising:

a receiver configured to receive indication information used for indicating the uplink transmission apparatus to transmit the uplink transmission, the indication information including a random access response or downlink control information.

4 . The uplink transmission apparatus according to claim 3 , wherein the first symbol of the uplink transmission is a first symbol in resources indicated by a time domain resource assignment (TDRA) indication field in the indication information.

5 . The uplink transmission apparatus according to claim 1 , wherein the integer parameter is configured per bandwidth part.

6 . The uplink transmission apparatus according to claim 5 , wherein the integer parameter is configured respectively for different subcarrier spacings.

7 . The uplink transmission apparatus according to claim 1 , wherein the uplink transmission is physical uplink shared channel (PUSCH) or physical uplink control channel (PUCCH).

8 . The uplink transmission apparatus according to claim 1 , wherein

the processor circuitry is further configured to generate a time-contiguous signal for the cyclic prefix extension.

9 . The uplink transmission apparatus according to claim 1 , wherein

the integer parameter is C1, C2, or C3.

10 . The uplink transmission apparatus according to claim 1 , wherein

a value of the integer parameter is predefined, or is configured by higher layer signalling.

11 . The uplink transmission apparatus according to claim 1 , wherein

the integer parameter is determined according to timing advance.

12 . The uplink transmission apparatus according to claim 3 , wherein the indication information includes an indication field used for indicating channel access type and the cyclic prefix (CP) extension.

13 . A network device comprising:

a transmitter configured to transmit, to an uplink transmission apparatus, indication information used for indicating the uplink transmission apparatus to transmit an uplink transmission, and

a receiver configured to receive a cyclic prefix extension and the uplink transmission, a duration of the cyclic prefix extension is determined according to an integer parameter and a length of symbols preceding a first symbol of the uplink transmission.

14 . The network device according to claim 13 ,

the indication information including a random access response or downlink control information.

15 . The network device according to claim 13 , wherein the first symbol of the uplink transmission is a first symbol in resources indicated by a time domain resource assignment (TDRA) indication field in the indication information.

16 . The network device according to claim 13 , wherein

the indication information includes an indication field used for indicating channel access type and the cyclic prefix (CP) extension.

17 . A communication system comprising:

an uplink transmission apparatus configured to:

determine a duration of cyclic prefix extension according to an integer parameter and a length of symbols preceding a first symbol of an uplink transmission, and

transmit the cyclic prefix extension and the uplink transmission; and

a network device configured to receive the cyclic prefix extension and the uplink transmission.