The term "PCS" is often used in place of "digital cellular," but true PCS means that other services like paging, caller ID and e-mail are bundled into the service. While cellular was originally created for use in cars, PCS was designed from the ground up for greater user mobility. PCS has smaller cells and therefore requires a larger number of antennas to cover a geographic area.
PCS phones use frequencies between 1. And while it is based on TDMA, PCS has kHz channel spacing and eight time slots instead of the typical kHz channel spacing and three time slots found in digital cellular. Sign up for our Newsletter! Mobile Newsletter banner close. Mobile Newsletter chat close.
Mobile Newsletter chat dots. Mobile Newsletter chat avatar. Mobile Newsletter chat subscribe. Prev NEXT. Cell Phones. Here you will see a list of all supported bands on your phone, including LTE and 5G. You want to switch to a supported LTE band of your carrier. To help, review the list below. Once you have chosen a supported LTE band, enable the "Selection" toggle in the upper right corner.
Use the back button or gesture to return to the previous screen. To ensure it works, we recommend rebooting your phone afterward. You can search for the app in the Play Store or open the link below on your phone.
Cellular carriers lease out multiple frequencies from the government airwaves to grant users access to their network. A frequency is the number of sound waves occurring per second. They are usually measured in Hertz Hz. A higher frequency means that the sound waves move a lot faster, and vice versa. They divide the RF spectrum into multiple ranges of frequencies, known as bands.
Keep in mind: frequency bands represent a range of frequencies, not a single cellular frequency. Cellular carriers need licenses from the FCC to use a given cellular bands. Usually, one license within a large band only gives the carrier exclusive rights to a small section of the band, also known as a block or channel. Smaller bands, on the other hand, are not made up of multiple blocks and are usually exclusive to one carrier.
The blocks carriers purchase are located on different sections of the RF spectrum that have been specifically allocated for cellular use. They can consist of high or low frequencies. Lower frequencies have the ability to travel further and penetrate obstacles , such as trees, hills, and buildings better, making them great for rural and remote areas. Therefore, they are better for highly populated urban areas. To provide their customers with the most reliable cellular network, cellular carriers have to buy multiple FCC licenses throughout the RF spectrum.
To access a carrier's frequency bands, your mobile device must first be activated on the carrier's network. Each carrier owns a range of frequencies to allow its customers to transmit information through their unique network. The cell phone and the cell towers can only communicate with each other through those frequency bands. Most bands are a set of two with a guard band in the middle to prevent them from interring with each other.
One band is used to sends information to a cell tower from a mobile device known as uplink , while the other is used to send information to a cell phone from a cell tower known as downlink. The separation of the bands allows data to be sent and received simultaneously. The devices using FDD bands experience fast voice and data transmissions.
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