Methods and apparatuses for uplink channel sounding between bwps

A user equipment (UE) comprising:

• a transceiver configured to receive:
• first information for a set of uplink (UL) bandwidth parts (BWPs) of a serving cell, wherein the set of UL BWPs includes more than one UL BWP, and
• second information, for each UL BWP from the set of UL BWPs, for sounding reference signal (SRS) resource sets;
• and
• a processor operably connected to the transceiver, the processor configured to determine, for each UL BWP from the set of UL BWPs, corresponding first SRS resources from the SRS resource sets,
• wherein the transceiver is further configured to transmit a SRS, in each UL BWP from the set of UL BWPs, using the corresponding first SRS resources.

A base station (BS) comprising:

• a transceiver configured to transmit:
• first information for a set of uplink (UL) bandwidth parts (BWPs) of a serving cell, wherein the set of UL BWPs includes more than one UL BWP, and
• second information, for each UL BWP from the set of UL BWPs, for sounding reference signal (SRS) resource sets;
• and
• a processor operably connected to the transceiver, the processor configured to determine, for each UL BWP from the set of UL BWPs, corresponding first SRS resources from the SRS resource sets,
• wherein the transceiver is further configured to receive a SRS, in each UL BWP from the set of UL BWPs, using the corresponding first SRS resources.