Section: 6.10 Bandwidth Adaptation
Content: With Bandwidth Adaptation (BA), the receive and transmit bandwidth of a UE need not be as large as the bandwidth of the cell and can be adjusted: the width can be ordered to change (e.g. to shrink during period of low activity to save power); the location can move in the frequency domain (e.g. to increase scheduling flexibility); and the subcarrier spacing can be ordered to change (e.g. to allow different services). A subset of the total cell bandwidth of a cell is referred to as a Bandwidth Part (BWP) and BA is achieved by configuring the UE with BWP(s) and telling the UE which of the configured BWPs is currently the active one. Figure 6.10-1 below describes a scenario where 3 different BWPs are configured: - BWP1 with a width of 40 MHz and subcarrier spacing of 15 kHz; - BWP2 with a width of 10 MHz and subcarrier spacing of 15 kHz; - BWP3 with a width of 20 MHz and subcarrier spacing of 60 kHz. Figure 6.10-1: BA Example