Method and apparatus for dynamically updating beam failure detection resource of TRP in wireless communication system
A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes receiving, from a base station (BS) via a radio resource control (RRC) message, configuration information including information on a first beam failure detection (BFD)-reference signal (RS) set and information on a second BFD-RS set, wherein each of the first BFD-RS set and the second BFD-RS set includes a plurality of BFD-RS resources, receiving, from the BS, medium access control (MAC) control element (CE) including information for indicating a first at least one BFD-RS resource included in the first BFD-RS set and a second at least one BFD-RS resource included in the second BFD-RS set, and identifying one or more activated BFD-RSs based on the MAC CE.
1 . A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver; and
a controller coupled to the transceiver, and configured to:
receive, from a base station (BS), a first radio resource control (RRC) message configuring a first beam failure detection-reference signal (BFD-RS) set and a second BFD-RS set, wherein each of the first BFD-RS set and the second BFD-RS set includes a plurality of BFD-RS resources, and
receive, from the BS, a medium access control (MAC) control element (CE)
for activating or deactivating one or more BFD-RS resources among the plurality of BFD-RS resources,
wherein the MAC CE includes a first BFD-RS identifier (ID) indicating a first BFD-RS resource from the first BFD-RS set and a second BFD-RS ID indicating a second BFD-RS resource from the second BFD-RS set,
wherein the MAC CE further includes a 1-bit indicator indicating whether the MAC CE further includes a third BFD-RS ID indicating a third resource from the first BFD-RS set or the second BFD-RS set, and
wherein the first BFD-RS set is associated with a first cell identity and the second BFD-RS set is associated with a second cell identity different from the first cell identity.
2 . The UE of claim 1 ,
wherein the controller is further configured to transmit, to the BS, capability information indicating whether the UE supports BFD for multi transmission reception points (TRPs), and
wherein the capability information includes information indicating a maximum number of BFD-RS resource per BFD-RS set supported by the UE.
3 . The UE of claim 1 , wherein each BFD-RS resource among the plurality of BFD-RS resources corresponds to a synchronization signal block (SSB) index or channel state information-reference signal (CSI-RS) index.
4 . The UE of claim 1 , wherein the controller is further configured to receive, from the BS, a second RRC message configuring at least one candidate beam RS list associated with the first BFD-RS set or the second BFD-RS set.
5 . A base station (BS) in a wireless communication system, the BS comprising:
a transceiver; and
a controller coupled to the transceiver, and configured to:
transmit, to a user equipment (UE), a first radio resource control (RRC) message configuring a first beam failure detection-reference signal (BFD-RS) set and a second BFD-RS set, wherein each of the first BFD-RS set and the second BFD-RS set includes a plurality of BFD-RS resources, and
transmit, to the UE, a medium access control (MAC) control element (CE)
for activating or deactivating one or more BFD-RS resources among the plurality of BFD-RS resources,
wherein the MAC CE includes a first BFD-RS identifier (ID) indicating a first BFD-RS resource from the first BFD-RS set and a second BFD-RS ID indicating a second BFD-RS resource from the second BFD-RS set,
wherein the MAC CE further includes a 1-bit indicator indicating whether the MAC CE further includes a third BFD-RS ID indicating a third resource from the first BFD-RS set or the second BFD-RS set, and
wherein the first BFD-RS set is associated with a first cell identity and the second BFD-RS set is associated with a second cell identity different from the first cell identity.
6 . The BS of claim 5 ,
wherein the controller is further configured to receive, from the UE, capability information indicating whether the UE supports BFD for multi transmission reception points (TRPs), and
wherein the capability information includes information indicating a maximum number of BFD-RS resource per BFD-RS set supported by the UE.
7 . The BS of claim 5 , wherein each BFD-RS resource among the plurality of BFD-RS resources corresponds to a synchronization signal block (SSB) index or channel state information-reference signal (CSI-RS) index.
8 . The BS of claim 5 , wherein the controller is further configured to transmit, to the UE, a second RRC message configuring at least one candidate beam RS list associated with the first BFD-RS set or the second BFD-RS set.
9 . A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
receiving, from a base station (BS), a first radio resource control (RRC) message configuring a first beam failure detection-reference signal (BFD-RS) set and a second BFD-RS set, wherein each of the first BFD-RS set and the second BFD-RS set includes a plurality of BFD-RS resources; and
receiving, from the BS, a medium access control (MAC) control element (CE)
for activating or deactivating one or more BFD-RS resources among the plurality of BFD-RS resources,
wherein the MAC CE includes a first BFD-RS identifier (ID) indicating a first BFD-RS resource from the first BFD-RS set and a second BFD-RS ID indicating a second BFD-RS resource from the second BFD-RS set,
wherein the MAC CE further includes a 1-bit indicator indicating whether the MAC CE further includes a third BFD-RS ID indicating a third resource from the first BFD-RS set or the second BFD-RS set, and
wherein the first BFD-RS set is associated with a first cell identity and the second BFD-RS set is associated with a second cell identity different from the first cell identity.
10 . The method of claim 9 , further comprising:
transmitting, to the BS, capability information indicating whether the UE supports BFD for multi transmission reception points (TRPs),
wherein the capability information includes information indicating a maximum number of BFD-RS resource per BFD-RS set supported by the UE, and
wherein each BFD-RS resource among the plurality of BFD-RS resources corresponds to a synchronization signal block (SSB) index or channel state information-reference signal (CSI-RS) index.
11 . The method of claim 9 , further comprising:
receiving, from the BS, a second RRC message configuring at least one candidate beam RS list associated with the first BFD-RS set or the second BFD-RS set.
12 . A method performed by a base station (BS) in a wireless communication system, the method comprising:
transmitting, to a user equipment (UE), a first radio resource control (RRC) message configuring a first beam failure detection-reference signal (BFD-RS) set and a second BFD-RS set, wherein each of the first BFD-RS set and the second BFD-RS set includes a plurality of BFD-RS resources; and
transmitting, to the UE, a medium access control (MAC) control element (CE)
for activating or deactivating one or more BFD-RS resources among the plurality of BFD-RS resources,
wherein the MAC CE includes a first BFD-RS identifier (ID) indicating a first BFD-RS resource from the first BFD-RS set and a second BFD-RS ID indicating a second BFD-RS resource from the second BFD-RS set,
wherein the MAC CE further includes a 1-bit indicator indicating whether the MAC CE further includes a third BFD-RS ID indicating a third resource from the first BFD-RS set or the second BFD-RS set, and
wherein the first BFD-RS set is associated with a first cell identity and the second BFD-RS set is associated with a second cell identity different from the first cell identity.
13 . The method of claim 12 , further comprising:
receiving, from the UE, capability information indicating whether the UE supports BFD for multi transmission reception points (TRPs),
wherein the capability information includes information indicating a maximum number of BFD-RS resource per BFD-RS set supported by the UE, and
wherein each BFD-RS resource among the plurality of BFD-RS resources corresponds to a synchronization signal block (SSB) index or channel state information-reference signal (CSI-RS) index.
14 . The method of claim 12 , further comprising:
transmitting, to the UE, a second RRC message configuring at least one candidate beam RS list associated with the first BFD-RS set or the second BFD-RS set.