Method and apparatus for beam indication for data transmission in a wireless communication system

A method for a UE (User Equipment), comprising:

• the UE receives a first configuration for PUSCH (Physical Uplink Shared Channel) transmission with configured grant, wherein the first configuration indicates a first sounding reference signal (SRS) resource indicator value, and the first SRS resource indicator (SRI) value is associated with a first reference signal;
• the UE transmits a first PUSCH with configured grant by using a transmission precoder or a spatial filter, wherein the transmission precoder or the spatial filter is for transmitting the first reference signal;
• the UE, in response to detecting beam failure recovery, transmits a RA (Random Access) preamble on a PRACH (Physical Random Access Channel) resource for beam failure recovery, wherein the PRACH resource is associated with a candidate reference signal;
• the UE monitors and/or receives a response corresponding to the RA preamble via one or more antenna port quasi co-location parameters associated with the candidate reference signal during the BFR (Beam Failure Recovery) procedure;
• and
• after the UE receives the response, the UE does not transmit a second PUSCH with configured grant until the UE receives a second configuration comprising SRI for PUSCH transmission with configured grant.

A method of a UE (User Equipment), comprising:

• the UE receives a first configuration for PUSCH (Physical Uplink Shared Channel) transmission with configured grant, wherein the first configuration indicates a first sounding reference signal (SRS) resource indicator value, and the first SRS resource indicator (SRI) value is associated with a first reference signal;
• the UE transmits a first PUSCH with configured grant by using a transmission precoder or a spatial filter, wherein the transmission precoder or the spatial filter is for transmitting the first reference signal;
• the UE, in response to detecting beam failure recovery, transmits a RA (Random Access) preamble on a PRACH (Physical Random Access Channel) resource for beam failure recovery, wherein the PRACH resource is associated with a candidate reference signal;
• the UE monitors and/or receives a response corresponding to the RA preamble via one or more antenna port quasi co-location parameters associated with the candidate reference signal during the BFR (Beam Failure Recovery) procedure;
• and
• if the UE receives the response, the UE transmits a second PUSCH with configured grant on an occasion configured in the first configuration via using the same transmission precoder or spatial filter for transmitting the PRACH resource.