Upper Layer Indication is a broadcast that may be received from a 4G tower, indicating that 5G is available. A 5G icon may appear, depending on the phone, even if 5G is actually unavailable. 5G may still work without Upper Layer Indication.

5G is not indicated.

5G is indicated.

Use of 4G with 5G restricted by subscription etc: True / False.

Not restricted.

Restricted.

Status of adding a 5G network while 4G is in use.

Active.

Inactive.

Failure cause in the cell group.

No failure.

Failure to decode notifications after repeated attempts. What is considered a failure is up to settings loaded from the tower. May be caused by loss of signal or thermal issues.

A certain kind of error detection went through the equivalent of 'Could you repeat that? Could you repeat that? Could you repeat that?' until a set limit was reached.

Failure to connect.

Refer to Band, but note the following differences:

In 5G, the search for an important part of the signal can be fine or coarse. The raster depends on the band number, making it one of the differences in n38 vs n41 vs n90.

In 5G, a band defines minimum device capabilities, e.g. that 4Rx is required.

Then it might not be able to use 5G, regardless of its bands.

5G may operate on newer bands. Though 5G may be used for providing a short range & high capacity kind of signal, 5G does not require this. 5G may be used on waves that previously carried 4G/3G/2G (including long range & low capacity kinds of signal), which results in a slight maximum speed gain in the downlink. If a short range & high capacity signal is used, and it is set up well, users in its coverage do not slow down users outside its coverage, so the speed of both those in the short range and those not within the short range improves.

Wi-Fi may, basically, be 20, 40, 80, or 160MHz wide, there are many widths 5G may be deployed on too, the width is displayed here. Note that the width may refer to a pair of channels that are not next to each other, one being for uploading, the other for downloading, or it may refer to a single channel phones and towers take turns in. The BW may be lower than 4G's maximum BW. Carriers can't freely change the BW.

How the resource element grid works. More time and fewer waves (lower SCS) or less time and more waves. A wider SCS takes up more frequencies but uses less time. If there's less time, there's less time to wait out 'echoes' of the signal. If the signal tends to be short-range, there are fewer 'echoes', so a higher value can be used. Short-range kinds of signal get high values, long-range kinds of signal get low values. 15 is the only option in 4G. Raising the value does not improve speeds, but may improve the latency.

5G allows for a lot of flexibility, the part of the CellId used for identifying the tower and the part of the CellId used for identifying the part of the tower is carrier-specific.

Communication can be simple to understand or complex. The more complex the communication is, the more data can be transferred, but the less likely the communication will be understood when the signal is poor. If communication is simple to understand, not much data is transferred, but it continues to work while the signal is poor. While transferring data, _1_ is the complexity of downlink communications (from the tower to the phone), _2_ is the complexity of uplink communications (from the phone to the tower). Generally, the higher the MCS, the more complex communications are.

Neighbor cells are from other towers or other parts of the same tower that are not currently in use by the device with the software. Neighbors only cause interference, especially if neighbors are operating on the same ARFCN. It is best to operate the phone where the RSRP of neighbor cells are low and the RSRP of the cell in use is high.

DSS is where 5G operates inside 4G.