f certain SS blocks. The number of SS blocks that are periodically repeated depends on the frequency band. For frequencies less than 3 GHz, there are only four SS blocks in an SS burst set supported. Between 3 GHz and GHz 8 SS blocks are supported in an SS burst set and this number is increased to 64 for mmWave. The underlying reason for this is that as the frequency increases, the likelihood of using beamforming increases. In the case of mm Wave, a significant amount of SS blocks may be needed SO that many spatial directions can be used to accommodate the desirable beamforming pattern. Frequency Range Max SS Blocks per SS Burst Set (L) <3 GHz 3-6 GHz mm Wave Table 5.1 - Supported SS blocks in SS burst sets The different channels in the SS blocks are multiplexed in time. The frequency location of the SS block is not fixed and can be located anywhere within the carrier bandwidth. This frequency location of the SS block cannot even be aligned to Physical Resource Blocks (PRB). This, together with the Physical channels and signals for the initial access procedure Bandwidth Part (BWP) concept that we will discuss in the next chapter, gives us a lot of flexibility in defining a cell. In NR, the SS block can be located in any position in the frequency domain in contrast to LTE, where synchronization signals are located in the center of the spectrum. Several simultaneous transmissions of SS blocks in different frequency resources are also possible. The use case for this is about how devices can access a network in NR. In LTE, all devices must support the maximum 20 MHz bandwidth; however, this is not the case for NR. Any device, no matter the supported minimum bandwidth, can access a network, no matter what the bandwidth is. Also, depending on a device chipset's processing capabilities, it could potentially access the network as a single carrier or as intra-band contiguous Carrier Aggregation (CA). For instance, a device can access a 400 MHz cell as a single cell with 400 MHz bandwidth or as four contiguous Component Ca