User equipment and system performing transmission and reception operations

1. A user equipment, comprising:

a transceiver which, in operation, receives plural PDCCHs (physical downlink control channels) including a first PDCCH and a second PDCCH, from each one of plural TRPs (transmission and reception points) including a first TRP and a second TRP, within a single TTI (transmission time interval),

wherein the first PDCCH and the second PDCCH are received from the first TRP, and the first PDCCH and the second PDCCH are received from the second TRP;

circuitry which, in operation, decodes plural DCIs (downlink control information) including a first DCI carried on the first PDCCH and a second DCI carried on the second PDCCH,

wherein the first DCI and the second DCI received in a second symbol are not decoded in case the first DCI and the second DCI received in a first symbol are decoded,

wherein the decoded plural DCIs from each one of the plural TRPs schedule plural PDSCH (physical downlink shared channel) receptions including a first PDSCH reception and a second PDSCH reception or plural PUSCH (physical uplink shared channel) transmissions including a first PUSCH transmission and a second PUSCH transmission, and

wherein the first DCI schedules the first PDSCH reception or the first PUSCH transmission on the first TRP and the second DCI schedules the second PDSCH reception or the second PUSCH transmission on the second TRP; and

the transceiver, in operation, receives same data from the first TRP and from the second TRP in the scheduled plural PDSCH receptions or transmits same data to the first TRP and to the second TRP in the scheduled plural PUSCH transmissions.

2. The user equipment according to claim 1 , wherein the transceiver, in operation, receives each one of the plural PDCCHs from one of the plural TRPs in a same or different CORESET (control resource set), and/or

the transceiver, in operation, receives the plural PDCCHs from each one of the plural TRPs in different CORESETs and/or

the transceiver, in operation, receives in a same time-frequency resource, which is included in different CORESETs, plural PDCCHs, which are:

PDCCHs that are respectively received from different ones of the plural TRPs; and

PDCCHs carrying plural DCIs that are scheduling a same one PDSCH reception or a same one PUSCH transmission on a same one of the plural TRPs.

3. The user equipment according to claim 2 , wherein the circuitry, in operation and prior to decoding the plural DCIs, performs channel estimation using same DM-RS (demodulation reference signals) associated with the plural PDCCHs from each of the plural TRPs.

4. The user equipment according to claim 2 , wherein the circuitry, in operation and prior to decoding the plural DCIs, performs soft-combining of PDCCHs from different ones of the plural TRPs which are received in the same time-frequency resource.

5. The user equipment according to claim 1 , wherein the transceiver, in operation, receives each one of the plural PDCCHs from one of the plural TRPs in same or different CORESETs (control resource sets), and/or

the transceiver, in operation, receives the plural PDCCHs from each one of the plural TRPs, in different CORESETs, and/or

the transceiver, in operation, receives in a same time-frequency resources, which is included in different CORESETs, plural PDCCHs, which are:

PDCCHs that are respectively received from different ones of the plural TRPs; and

PDCCHs carrying plural DCIs that are respectively scheduling plural PDSCH receptions or plural PUSCH transmissions on different ones of the plural TRPs.

6. The user equipment according to claim 5 , wherein the circuitry, in operation and prior to decoding the plural DCIs, performs channel estimation using different DM-RS (demodulation reference signals) respectively associated with the plural PDCCHs from each of the plural TRPs.

7. The user equipment according to claim 5 , wherein the same time-frequency resource corresponds to a first symbol in the single TTI in which the transceiver, in operation, receives the plural PDCCHs from each of the plural TRPs.

8. The user equipment according to claim 1 , wherein the transceiver, in operation, receives or transmits the same data for each of the plural TRPs using same or different communication parameters.

9. The user equipment according to claim 8 , wherein the communication parameters, include at least one of: MCS (Modulation and Coding Scheme), RV (redundancy version), frequency domain resource assignment, time domain resource assignment, HARQ (hybrid automatic repeat request) process number, antenna ports, TCI (transmission configuration indicator), DMRS (demodulation reference signal) sequence initialization, transmit power control (TPC) command for PUSCH, frequency hopping flag for PUSCH, precoding information and number of layers for PUSCH.

10. The user equipment according to claim 8 , wherein the transceiver, in operation, receives or transmits the same data for at least one of the plural TRPs using plural antenna ports.

11. The user equipment according to claim 10 , wherein in case the transceiver uses different numbers of antenna ports for receiving or transmitting the same data on different ones of the plural TRPs, the circuitry, in operation, respectively determines different MCSs (Modulation and Coding Schemes) to be used by the transceiver as the different communication parameters for receiving or transmitting the same data.

12. The user equipment according to claim 1 , wherein the plurality of TRPs correspond to two, three or more TRPs.

13. A system, comprising:

a plurality of TRPs (transmission and reception points) including a first TRP and a second TRP, which, in operation, transmit plural PDCCHs (physical downlink control channels) including a first PDCCH and a second PDCCH, from each one of the plural TRPs, to an UE (user equipment), within a single TTI (transmission time interval),

wherein the first TRP transmits the first PDCCH and the second PDCCH, and the second TRP transmits the first PDCCH and the second PDCCH,

wherein plural DCIs (downlink control information) include a first DCI carried on the first PDCCH and a second DCI carried on the second PDCCH,

wherein the first DCI and the second DCI received in a second symbol are not decoded in case the first DCI and the second DCI received in a first symbol are decoded,

wherein the decoded plural DCIs from each one of the plural TRPs schedule plural PDSCH (physical downlink shared channel) transmissions including a first PDSCH transmission and a second PDSCH transmission or plural PUSCH (physical uplink shared channel) receptions including a first PUSCH reception and a second PUSCH reception, and

wherein the first DCI schedules the first PDSCH transmission or the first PUSCH reception on the first TRP and the second DCI schedules the second PDSCH transmission or the second PUSCH reception on the second TRP; and

the first TRP and the second TRP, in operation, are transmitting same data to the UE in the scheduled plural PDSCH transmissions or receiving same data from the UE in the scheduled plural PUSCH receptions.

14. A method for a user equipment, comprising the steps of:

receiving plural PDCCHs (physical downlink control channels) including a first PDCCH and a second PDCCH, from each one of plural TRPs (transmission and reception points) including a first TRP and a second TRP, within a single TTI (transmission time interval),

wherein the first PDCCH and the second PDCCH are received from the first TRP, and the first PDCCH and the second PDCCH are received from the second TRP;

decoding plural DCIs (downlink control information) including a first DCI carried on the first PDCCH and a second DCI carried on the second PDCCH,

wherein the first DCI and the second DCI received in a second symbol are not decoded in case the first DCI and the second DCI received in a first symbol are decoded,

wherein the decoded plural DCIs from each one of the plural TRPs schedule plural PDSCH (physical downlink shared channel) receptions including a first PDSCH reception and a second PDSCH reception or plural PUSCH (physical uplink shared channel) transmissions including a first PUSCH transmission and a second PUSCH transmission, and

wherein the first DCI schedules the first PDSCH reception or the first PUSCH transmission on the first TRP and the second DCI schedules the second PDSCH reception or the second PUSCH transmission on the second TRP; and

receiving same data from the first TRP and from the second TRP in the scheduled plural PDSCH receptions or transmitting same data to the first TRP and to the second TRP in the plural PUSCH transmissions.

15. A method for a system, comprising the steps of:

transmitting plural PDCCHs (physical downlink control channels) including a first PDCCH and a second PDCCH, from each one of plural TRPs (transmission and reception points) including a first TRP and a second TRP, to an UE (user equipment), within a single TTI (transmission time interval),

wherein the first TRP transmits the first PDCCH and the second PDCCH, and the second TRP transmits the first PDCCH and the second PDCCH,

wherein plural DCIs (downlink control information) include a first DCI carried on the first PDCCH and a second DCI carried on the second PDCCH,

wherein the first DCI and the second DCI received in a second symbol are not decoded in case the first DCI and the second DCI received in a first symbol are decoded,

wherein the decoded plural DCIs from each one of the plural TRPs schedule plural PDSCH (physical downlink shared channel) transmissions including a first PDSCH transmission and a second PDSCH transmission or plural PUSCH (physical uplink shared channel) receptions including a first PUSCH reception and a second PUSCH reception, and

wherein the first DCI schedules the first PDSCH transmission or the first PUSCH reception on the first TRP and the second DCI schedules the second PDSCH transmission or the second PUSCH reception on the second TRP; and

transmitting, from the first TRP and from the second TRP, same data to the UE in the scheduled plural PDSCH transmissions or receiving, at the first TRP and at the second TRP, same data from the UE in the scheduled plural PUSCH receptions.