Systems and methods for transmitting signals
Systems and methods for wireless communications are disclosed herein. In one embodiment, a wireless communication device that a first transmission on a first resource is canceled. In response to determining that the first transmission on the first resource is canceled, the wireless communication device performs a second transmission of a physical uplink shared channel (PUSCH) on a second resource. Configuration parameters of the second transmission of PUSCH on the second resource are configured by a network side or obtained from the first transmission.
1. A wireless communication method, comprising:
determining, by a wireless communication device, that a first transmission on a first resource is canceled due to a portion of the first resource overlapping with an overlapped resource used for a separate transmission; and
in response to determining that the first transmission on the first resource is canceled, performing, by the wireless communication device, a second transmission of a physical uplink shared channel (PUSCH) on a second resource, wherein configuration parameters of the second transmission of PUSCH on the second resource are configured by a network side or obtained from the first transmission,
wherein a time domain resource of the second resource is a time domain resource of the first resource after a reference orthogonal frequency division multiplexing (OFDM) symbol in time,
wherein the reference OFDM symbol is an N th OFDM symbol after a last symbol of physical downlink control channel (PDCCH) that schedules a separate transmission on the overlapped resource or after a starting time of the overlapped resource,
wherein a value of N is configured by the network side or predefined, and
wherein, responsive to frequency hopping being disabled, a frequency domain resource of the second resource corresponds to a frequency domain resource of the first resource.
2. The wireless communication method of claim 1 , wherein
the frequency hopping is enabled for the first transmission;
the first resource comprises a first hop and a second hop;
a portion of a time domain resource of the first hop that is after the overlapped resource or after the reference OFDM symbol has a number of symbols that is less than or equal to a threshold, the first transmission of the first resource being canceled due to a portion of the first resource overlapping with an overlapped resource used for a separate transmission; and
a time domain resource of the second resource corresponds to the time domain resource of the second hop.
3. The wireless communication method of claim 1 , wherein performing the second transmission of the PUSCH on the second resource comprises:
determining that a time domain resource of the second resource has a number of symbols that is less than or equal to a threshold; and
refraining from performing the second transmission in response to determining that the time domain resource of the second resource is less than or equal to the number of symbols.
4. The wireless communication method of claim 1 , wherein
the frequency hopping is enabled for the first transmission;
the first resource comprises a first hop and a second hop;
in response to determining that a portion of a time domain resource of the first hop that is after the overlapped resource or after the reference OFDM symbol has a number of symbols that is greater than a threshold, frequency hopping is enabled for the second transmission.
5. The wireless communication method of claim 1 , wherein
the frequency hopping is disabled for the second transmission in response to determining that frequency hopping is disabled for the first transmission; or
frequency hopping is enabled for the first transmission, the first resource comprising a first hop and a second hop, in response to determining that a portion of a time domain resource of the first hop that is after the overlapped resource or after the reference OFDM symbol has a number of symbols that is less than or equal to a threshold, frequency hopping is disabled for the second transmission.
6. The wireless communication method of claim 1 , wherein
the first transmission corresponds to a first hybrid automatic repeat request (HARQ) process number;
the second transmission corresponds to a second HARQ process number; and
the second HARQ process number is a next unoccupied HARQ process number that is before or after the first HARQ number.
7. The wireless communication method of claim 1 , wherein performing the second transmission of the PUSCH on the second resource comprises:
determining that all hybrid automatic repeat request (HARQ) process numbers have been occupied; and
refraining from performing the second transmission in response to determining that all HARQ process numbers have been occupied.
8. The wireless communication method of claim 1 , wherein
a new data indication (NDI) of the PUSCH is set to be 0 or 1; and
the second transmission of the PUSCH is a new transmission instead of retransmission of the first transmission.
9. The wireless communication method of claim 1 , wherein a new medium access control (MAC) protocol data unit (PDU) is generated for the PUSCH to be transmitted on the second resource.
10. The wireless communication method of claim 1 , wherein
the first transmission corresponds to a first hybrid automatic repeat request (HARQ) process number;
the second transmission corresponds to a second HARQ process number; and
the first HARQ process number and the second HARQ process number are the same.
11. The wireless communication method of claim 1 , wherein
a medium access control (MAC) multiplexes and assembles a service data unit (SDU) originally to be carried by an original PUSCH of the first transmission into a MAC protocol data unit (PDU); and
the MAC PDU is transmitted via the second transmission.
12. The wireless communication method of claim 1 , wherein the configuration parameters comprise one or more of a modulation and coding scheme (MCS), a redundancy version, transmission power, a sounding reference signal (SRS) resource indication, precoding information, a number of layers, antenna port configurations, or demodulation reference signal (DMRS) sequence initialization information.
13. The wireless communication method of claim 1 , wherein each of the configuration parameters is the same as a corresponding one of original configuration parameters of the first transmission.
14. The wireless communication method of claim 1 , wherein each of the configuration parameters are configured by the network side via radio resource control (RRC) signaling.
15. A wireless communication device, comprising:
at least one processor configured to:
determine that a first transmission on a first resource is canceled due to a portion of the first resource overlapping with an overlapped resource used for a separate transmission; and
in response to determining that the first transmission on the first resource is canceled, performing, via a transceiver, a second transmission of a physical uplink shared channel (PUSCH) on a second resource, wherein configuration parameters of the second transmission of PUSCH on the second resource are configured by a network side or obtained from the first transmission,
wherein a time domain resource of the second resource is a time domain resource of the first resource after a reference orthogonal frequency division multiplexing (OFDM) symbol in time,
wherein the OFDM symbol is an N th OFDM symbol after a last symbol of physical downlink control channel (PDCCH) that schedules a separate transmission on the overlapped resource or after a starting time of the overlapped resource,
wherein a value of N is configured by the network side or predefined, and
wherein, responsive to frequency hopping being disabled, a frequency domain resource of the second resource corresponds to a frequency domain resource of the first resource.
16. A wireless communication method, comprising:
determining, by a network side, that a first transmission of a wireless communication device on a first resource is canceled due to a portion of the first resource overlapping with an overlapped resource used for a separate transmission; and
in response to determining that the first transmission of the wireless communication device on the first resource is canceled, configuring and receiving a second transmission of the wireless communication device for a physical uplink shared channel (PUSCH) on a second resource,
wherein configuration parameters of the second transmission of the PUSCH on the second resource are configured by the network side or obtained from the first transmission,
wherein a time domain resource of the second resource is a time domain resource of the first resource after a reference orthogonal frequency division multiplexing (OFDM) symbol in time,
wherein the reference OFDM symbol is an N th OFDM symbol after a last symbol of physical downlink control channel (PDCCH) that schedules a separate transmission on the overlapped resource or after a starting time of the overlapped resource,
wherein a value of N is configured by the network side or predefined, and
wherein, responsive to frequency hopping being disabled, a frequency domain resource of the second resource corresponds to a frequency domain resource of the first resource.