BWP switching method and apparatus, and terminal device

A Band Width Part (BWP) switching apparatus, wherein the apparatus comprises:

• an acquisition circuit, configured to acquire Beam Failure Recovery (BFR) configuration information, wherein the BFR configuration information comprises first resource information and identifier information of a first search space, the first resource information is configured for initiating a random access procedure, the identifier information of the first search space is configured to detect a downlink control channel, the first configuration information corresponds to an uplink BWP, and the first search space corresponds to a downlink BWP, and wherein the uplink BWP is in an active state;
• an activation circuit, configured to, if the downlink BWP is not in an active state, switch the downlink BWP to the active state or maintain the second BWP in the active state;
• and
• a random access circuit, configured to perform the random access procedure on the uplink BWP and the downlink BWP.