Method and apparatus for transmitting and receiving downlink signal in next generation wireless network
Provided are a method and apparatus for transmitting and receiving a downlink signal for supporting effective multiplexing between data traffic having mutually different QoS requirements in a next generation/5G wireless access network (“New Radio” (NR)) for which discussion has begun in 3GPP. The method may include receiving configuration information for receiving downlink pre-emption indication data from a base station; monitoring the downlink pre-emption indication data based on the configuration information; and receiving the downlink pre-emption indication data through a multicast or unicast signal, wherein the downlink pre-emption indication data indicates superposed radio resources for providing a first service and for providing a second service.
1. A method of receiving a downlink (DL) signal by a first user equipment (UE), the method comprising:
receiving, by the first UE, a specific radio network temporary identifier (RNTI) for DL preemption indication information through a UE-specific radio resource control (RRC) signaling;
after receiving the specific RNTI, monitoring, by the first UE, a DL control channel for receiving the DL preemption indication information based on the received specific RNTI; and
receiving, by the first UE, the DL preemption indication information through a multicast signal,
wherein the specific RNTI received through the UE specific RRC signaling is a newly defined RNTI other than at least a cell-RNTI (C-RNTI),
wherein the DL preemption indication information indicates preempted resource information in a prior slot, which precedes a slot in which the DL preemption indication information is received,
wherein the specific RNTI is received with information related to time and frequency, and
wherein the information related to time and frequency is received for the reception of the DL preemption indication information through the UE-specific RRC signaling.
2. The method according to claim 1 , wherein at least one of a subcarrier spacing and a time-domain scheduling unit of first radio resources allocated for the first UE are different from second radio resources allocated for a second UE.
3. The method according to claim 1 , wherein the DL preemption indication information is received through a common search space of the DL control channel.
4. The method according to claim 1 , wherein the time and frequency information comprises frequency resource information and slot index information.
5. A method of transmitting a downlink (DL) signal by a base station (BS), the method comprising:
configuring, by the BS, a specific radio network temporary identifier (RNTI) for DL preemption indication information;
transmitting, from the BS, the configured specific RNTI to a first user equipment (UE) through a UE-specific radio resource control (RRC) signaling; and
transmitting, from the BS, the DL preemption indication information based on the specific RNTI through a multicast signal,
wherein the specific RNTI transmitted through the UE specific RRC signaling is a newly defined RNTI other than at least a cell-RNTI (C-RNTI),
wherein the DL preemption indication information indicates preempted resource information in a prior slot, which precedes a slot in which the DL preemption indication information is transmitted,
wherein the specific RNTI is transmitted with information related to time and frequency, and
wherein the information related to time and frequency is transmitted for a reception of the DL preemption indication information by the first UE through the UE-specific RRC signaling.
6. The method according to claim 5 , wherein at least one of a subcarrier spacing and a time-domain scheduling unit of first radio resources allocated for the first UE are different from second radio resources allocated for a second UE.
7. The method according to claim 5 , wherein the DL preemption indication information is transmitted through a common search space of the DL control channel.
8. The method according to claim 5 , wherein the time and frequency information comprises frequency resource information and slot index information.
9. A user equipment (UE) for receiving a downlink (DL) signal, the UE comprising:
a receiver configured to receive a specific radio network temporary identifier (RNTI) for DL preemption indication information through a UE-specific radio resource control (RRC) signaling;
after reception of the specific RNTI, a controller configured to monitor a DL control channel for receiving the DL preemption indication information based on the received specific RNTI,
wherein the receiver further configured to receive the DL preemption indication information through a multicast signal,
wherein the specific RNTI received through the UE specific RRC signaling is a newly defined RNTI other than at least a cell-RNTI (C-RNTI),
wherein the DL preemption indication information indicates preempted resource information in a prior slot, which precedes a slot in which the DL preemption indication information is received,
wherein the specific RNTI is received with information related to time and frequency, and
wherein the information related to time and frequency is received for the reception of the DL preemption indication information through the UE-specific RRC signaling.
10. The UE according to claim 9 , wherein at least one of a subcarrier spacing and a time-domain scheduling unit of first radio resources allocated for the UE are different from second radio resources allocated for another UE.
11. The UE according to claim 9 , wherein the DL preemption indication information is received through a common search space of the DL control channel.
12. The UE according to claim 9 , wherein the time and frequency information comprises frequency resource information and slot index information.