METHOD AND APPARATUS FOR UPLINK TRANSMISSION SCHEME
Disclosed in the present application are a method and device used in a node for wireless communication. A node receives a first information block; the node receives a first PDCCH, a DCI format used by the first PDCCH at least comprising a first domain; the node sends a first PUSCH, a waveform used by the first PUSCH being a target waveform, and the target waveform being one of DFT-s-OFDM and CP-OFDM; wherein the first domain is a domain related to a waveform, and whether the DCI format used by the first PDCCH comprises a second domain depends on a second information block; when the DCI format used by the first PDCCH comprises the second domain, the second domain comprised in the DCI format used by the first PDCCH is used for determining the target waveform from the DFT-s-OFDM and the CP-OFDM; and when the DCI format used by the first PDCCH does not comprise the second domain, at least the first information block among the first information block and the second information block is used for determining the target waveform from the DFT-s-OFDM and the CP-OFDM. The present application enhances the coverage performance.
1 . A user equipment (UE) used in wireless communication, the UE comprising:
a transceiver; and
a processor, wherein the transceiver and the processor are configured to:
receive a first information block,
receive a first physical downlink control channel (PDCCH), wherein a downlink control information (DCI) format used by the first PDCCH comprises at least a first domain,
determine whether the DCI format used by the PDCCH includes a second domain, wherein the second domain is different from the first domain, and wherein whether the DCI format comprises the second domain depends on a second information block, and wherein the second information block is different from the first information block,
on a condition that the DCI format includes the second domain, determining, based on the second domain, a target waveform from a discrete fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM) or a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM), and
on a condition that the DCI format does not include the second domain, determine, based on the first information block, the target waveform as DFT-s-OFDM or CP-OFDM,
send a first physical uplink shared channel (PUSCH) using the target waveform.
2 . The UE of claim 1 , wherein the second information block is a domain, and wherein a value of the second information block is an enumerated value, and wherein the target waveform is related to whether the second information block is configured.
3 . The UE of claim 1 , wherein the transceiver and the processor are further configured to:
receive a third information block,
determine a first reference waveform based on the first information block, wherein the first reference waveform is one of the DFT-s-OFDM and the CP-OFDM,
determine a second reference waveform based on the third information block, wherein the second reference waveform is one of the DFT-s-OFDM or the CP-OFDM,
on a condition that the second information block is not configured, determine the target waveform as the second reference waveform, and
on a condition that the second information block is configured and the DCI format used by the first PDCCH does not comprise the second domain, determine the target waveform as the first reference waveform.
4 . The UE of claim 1 , wherein a transmitted power of the first PUSCH is equal to a smaller value between a first upper limit value and a first power value, a first parameter value is used for determining the first upper limit value, and a second parameter value is used for determining the first power value, and
wherein the first and second parameter values are related to the target waveform.
5 . The UE of claim 1 , wherein a size of the first domain comprised in the DCI format used by the first PDCCH is equal to a larger size between a size of the first domain corresponding to the DFT-s-OFDM and a size of the first domain corresponding to the CP-OFDM.
6 . The UE of claim 1 , wherein a size of the first domain corresponding to the DFT-s-OFDM is not equal to the size of the first domain corresponding to the CP-OFDM, and
wherein at least one most significant bit equal to “o” is added to the first domain having a smaller size between the first domain corresponding to the DFT-s-OFDM and the first domain corresponding to the CP-OFDM such that the size of the first domain corresponding to the DFT-s-OFDM is equal to the size of the first domain corresponding to the CP-OFDM.
7 . The UE of claim 1 , wherein the DCI format used by the first PDCCH is used for scheduling the first PUSCH, and
wherein an earliest time domain symbol occupied by the first PUSCH is not earlier than a reference time domain symbol, the reference time domain symbol being a next uplink symbol of which a start time is later than an expiration time of the first PDCCH by a first time length, and
wherein the first time length is related to the target waveform.
8 . A base station used in wireless communication, the base station comprising:
a transceiver; and
a processor, wherein the transceiver and the processor are configured to:
send a first information block,
send a first physical downlink control channel (PDCCH), wherein a downlink control information (DCI) format used by the first PDCCH comprises at least a first domain, wherein the first domain is a domain related to a waveform, a second domain is a domain different from the first domain, whether the DCI format comprises the second domain depends on a second information block, and the second information block is different from the first information block,
receive a first physical uplink shared channel (PUSCH), a waveform used by the first PUSCH being a target waveform, and the target waveform being one of discrete fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM) or cyclic prefix orthogonal frequency division multiplexing (CP-OFDM),
on a condition that the DCI format used by the first PDCCH comprises the second domain, the second domain comprised in the DCI format used by the first PDCCH is used for determining the target waveform from the DFT-s-OFDM and the CP-OFDM, and
on a condition that the DCI format used by the first PDCCH does not comprise the second domain, at least the first information block between the first information block and the second information block is used for determining the target waveform from the DFT-s-OFDM and the CP-OFDM.
9 . A method in a user equipment (UE) used in wireless communication, the UE comprising:
receiving a first information block;
receiving a first physical downlink control channel (PDCCH), wherein a downlink control information (DCI) format used by the first PDCCH at least comprises at least a first domain; and
determining whether the DCI format used by the PDCCH includes a second domain, wherein the second domain is different from the first domain, and wherein whether the DCI format used by the first PDCCH comprises the second domain depends on a second information block, and wherein the second information block is different from the first information block;
on a condition that the DCI format includes the second domain, determining, based on the second domain, a target waveform from a discrete fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM) or a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM);
on a condition that the DCI format does not include the second domain, determining, based on the first information block, the target waveform as DFT-s-OFDM or CP-OFDM; and
sending a first physical uplink shared channel (PUSCH) using the target waveform.
10 . (canceled)