1. Tarana Wireless
  2. Tarana Cloud Suite
  3. TCS Troubleshooting

TCS KPI Reference

Metrics and Key Performance Indicators in TCS

Tarana devices collect and track information from the network and the environment and displays them in the Device List table as columns. The complete set of metrics is divided into five categories:

  • Link Metrics: Information regarding the state of the RF link between a base node and a remote node. Some link metrics are objective, such as the configured primary base node for a remote node, and some are subjective to the device on which the measurement occurs, such as signal-to-noise ratio (SNR). In cases where the measurements are subjective to the device, the metric value is displayed as measure from the device.

  • System Metrics: Information regarding the state and configuration of the device. System metrics include configuration details such as the management IP address and hostname, state information such as the system uptime and running software version, and topology information such as the region, market, site, cell, and sector.

  • Hardware Metrics: Information regarding the state of the hardware. Hardware metrics include identifying values such as part number and serial number, and environmental information such as operating temperature and supply voltage.

  • Planning Metrics: Information used in planning deployments and for operational reference. Planning metrics include the planning ID, configured carrier frequency, available bandwidth, management VLAN, and network profile.

  • Location Metrics: Information regarding the location and orientation of the device. Location metrics describe positional information such as where the device is located geographically, how high it is mounted, and the direction it is pointing.

By default, the Device List table displays the following columns:

Default Base Node Columns

Default Remote Node Columns

Link Metrics

  • Rx Signal Carrier 0

  • Rx Signal Carrier 1

  • Active Connections

  • Rx Signal Carrier 0

  • Rx Signal Carrier 1

  • RF Range

  • Path Loss

  • Link Uptime

  • DL SINR

  • UL SINR

  • DL Peak (24 hrs)

  • UL Peak (24 hrs)

System Metrics

  • Hostname

  • Sector

  • Site

  • Management IP

  • Alarms Count

  • System Uptime

  • Hostname

  • Alarms Count

  • System Uptime

Hardware Metrics

  • Serial Number

  • Serial Number

Planning Metrics

NONE

NONE

Location Metrics

NONE

  • Primary BN

  • Sector BN

Hardware Metrics and KPIs

The hardware metrics include information regarding the state of the hardware. Hardware metrics contain identifying values such as part number and serial number, and environmental information such as operating temperature and supply voltage.

Serial Number: A string that uniquely identifies a device or component.

Part Number: Device model number

Temperature: The internal temperature, at board level, reported by the device. The maximum internal temperature for devices is 95 degrees Celsius.

Note

Temperature as defined here is distinct from the temperature listed in the data sheet, which describes the ambient operating temperature range.

Voltage: The input power supply voltage as reported by the base node. Nominally, this is 48VDC, but the base node can safely function when the voltage is between 44VDC and 58VDC. Lower voltage may cause the device to power down.

System Metrics and KPIs

System metrics include Information regarding the state and configuration of the device. They include configuration details such as the management IP address and hostname, state information such as the system uptime and running software version, and topology information such as the region, market, site, cell, and sector.

Hostname: The hostname is an identifier used to distinguish the device on a network. By default the hostname is the device serial number.

Sector: The administrator-defined name of a sector that has been assigned to a cell. There is a 1:1 relationship between a sector name and a base node. A cell is comprised of up to four sectors, with sector ID numbers 0 through 3. Four sectors can be used to provide 360-degree coverage.

Site: A site corresponds to a physical location where one or more cells. Each site has a site ID numbered from 0 through 5.

Cell: A colocated group of one to four base nodes. The base nodes in a cell are designed to use the same carrier frequencies, but this is not a requirement. Each cell has a cell ID numbered from 0 through 23.

Market: An administrator-defined geographical deployment area, such as a city. A market consists of one or more sites, and one or more markets constitutes a region.

Region: An administrator-defined geographical deployment area such as a state, province, or country. A region can contain multiple markets.

Software Version: The current version of the running device software.

Notes: A text field for useful details about the device. The maximum length is 1024 characters.

Management IP: The in-band management IP address used for device management of a base node.

Boot Reason: Reason reported by the device for the most recent reboot. Possible reasons include a cold reboot due to power interruption, a warm reboot prompted by the software, and a Watchdog reboot initiated when the system detects an unrecoverable condition.

Active Bank: Active bank indicates which internal software bank hosts the currently running firmware.

Alarms Count: Number of currently raised alarms for a device.

System Uptime: Time since the device last booted, in days, hours, minutes, and seconds.

CPU: The percentage of CPU actively in use. This value is typically within the range of 30 to 90 percent.

Memory: The percentage of memory currently in use. This value is typically within the range of 30 to 90 percent.

Location Metrics and KPIs

The location metrics include information regarding the geographical position and orientation of a device. Location metrics describe positional information such as where the device is located geographically, how high it is mounted, and the direction it is pointing.

Sector BN: Hostname of the BN to which the RN is connected.

Sector (Location): Name of the Sector to which the RN is connected.

Location: Latitude and longitude of the device in decimal degrees. On the BN, this is obtained from the GPS module. From the RN, it is user-configured.

Height (AGL): Height of the device above ground level (AGL).

Height (AMSL): Height of the device Above Mean Seal Level (AMSL).

Azimuth: Horizontal angle of the device measured clockwise from north.

Tilt: The vertical angle, measured in degrees relative to the true (horizontally level) horizon. 5 GHz base nodes that are tilted down have a positive tilt (0 through 180 degrees), while those that are tilted up have a negative tilt (0 through -180 degrees). 3 GHz base nodes have 3 degrees electrical downtilt (towards the ground) in addition to the value reported on TCS. To conform with the CBRS standard, the antenna downtilt for a 3 GHz CBRS base node is reported as negative while an upward tilt is reported as positive.

Planning Metrics and KPIs

The planning metrics include information used in planning deployments and for operational reference. They include the planning ID, configured carrier frequency, available bandwidth, management VLAN, and network profile.

Planning ID: The planning ID is used to allow a remote node to select the optimal base node from a larger set of base nodes in nearby cells. It is comprised of <set id>.<cell id>.<sector id>. A set is a collection of up to 24 cells. The set ID range is a value between 0-5. A cell is a group of up to 4 sectors at a single site sharing the same frequency band. The cell ID range is a value between 0-23. The sector ID is a value between 0-3 and refers to an individual sector within a given cell. The sector ID is automatically assigned by TCS when the sector is created.

Frequency: The administrator-selected operating center frequency of the carrier. The value is hardware-dependent and based on the device model.

Bandwidth: The amount of operational spectrum, in MHz, available for use by a sector or link.

Network Profile: Defines the overall ratio of downlink throughput to uplink throughput (e.g., 4.5:1) and link distance. All cells with overlapping coverage and frequencies should use the same network profile to avoid unnecessary interference. The network profile is configured at the cell and market levels.

Management VLAN: If a management VLAN has been configured for a base node, this indicates which VLAN ID all in-band management traffic will be tagged with on the port where the base node is connected. The supported number range for the VLAN ID is 0 through 4091.

Link Metrics and KPIs

The link metrics include information regarding the state of the RF link between a base node and a remote node. Link metric provide information regarding the state of the RF link between the base node and the remote node. Some link metrics are objective, such as the configured primary base node for a remote node, and some are subjective to the device on which the measurement occurs, such as signal-to-noise ratio (SNR). In cases where the measurements are subjective to the device, the metric value is displayed as measure from the device.

Intf. Noise Ratio Max Carrier0: The maximum interference-to-noise ratio (INR), in dB, detected in the subband frequencies of carrier 0 over a 30 second interval. The detected interference may or may not overlap all frequencies assigned to the carrier. A lower value indicates less interference that the device needs to cancel. In general, an INR of 15 or less is considered a low interference environment. Values between 15 and 35 indicate medium interference, and values above 35 indicate high interference.

Intf. Noise Ratio Max Carrier1: The maximum interference-to-noise ratio (INR), in dB, detected in the subband frequencies of carrier 1 over a 30 second interval. The detected interference may or may not overlap all frequencies assigned to the carrier. A lower value indicates less interference that the device needs to cancel. In general, an INR of 15 or less is considered a low interference environment. Values between 15 and 35 indicate medium interference, and values above 35 indicate high interference.

Sensitivity Loss Max Carrier0: The loss in sensitivity on carrier 0, in dB, due to very high received signal strength. A device that reports a non-zero value is likely experiencing high interference levels. In the case of remote nodes, this typically correlates with a low pathloss number for the link. Expected performance of a link should be calculated by summing the sensitivity loss with measured pathloss.

Sensitivity Loss Max Carrier1: The loss in sensitivity on carrier 1, in dB, due to very high received signal strength. A device that reports a non-zero value is likely experiencing high interference levels. In the case of remote nodes, this typically correlates with a low pathloss number for the link. Expected performance of a link should be calculated by summing the sensitivity loss with measured pathloss.

Rx Signal Carrier0: The received signal strength for carrier 0 in dBm. Received signal strength includes both the signal of interest and interference. This value is typically lower when there is no traffic passing on the link, at which point the number indicates the amount of interference noise on the link.

Rx Signal Carrier1: The received signal strength for carrier 1 in dBm. Received signal strength includes both the signal of interest and interference. This value is typically lower when there is no traffic passing on the link, at which point the number indicates the amount of interference noise on the link.

Active Connections: The number of remote nodes that are currently connected to a base node.

LoS Distance: Link distance in meters, as measured in a straight line between the base node and the remote node using the provided latitude and longitude. The base node coordinates are provided by the built-in GPS. Remote node coordinates are administrator-configured. If nothing is configured a default value of 0,0 is used.

RF Range (RF Distance): An estimate of the distance, in meters, traveled by the signal between the base node and the remote node. This differs from LoS distance in that it accounts for reflections and diffractions. In general, the RF range will be equal to, or slightly greater than, LoS distance.

Path Loss: The attenuation of the RF signal, in dB, between the base node antenna and the remote node antenna, excluding antenna gains. Values higher than that calculated by free space pathloss typically indicate some type of degradation of the signal such as as an obstacle (near- or non-line-of-sight).

Link Uptime: Elapsed time (in days, hours, minutes, and seconds) since an active link was established.

DL SINR: The average downlink signal-to-interference-and-noise ratio (SINR), in dB, for a link. This value is measured at the time traffic is transmitted.

UL SINR: The average uplink signal-to-inteference and noise ratio (SINR), in dB, for a link. This value is measured at the time traffic is transmitted.

DL PER: The downlink packet error rate after accounting for ARQ retransmissions. Acceptable values are typically in the range of 0% to 1%. A value of 1% to 10% indicates moderate degradation of the link while values greater than 10% are considered detrimental to link performance. In general, the higher the peak rate of a link, the lower the acceptable PER value.

UL PER: The uplink packet error rate after accounting for ARQ retransmissions. Acceptable values are typically in the range of 0% to 1%. A value of 1% to 10% indicates moderate degradation of the link while values greater than 10% are considered deterimental to link performance. In general, the higher the peak rate of a link, the lower the acceptable PER value.

DL Tonnage (24hrs): The amount of data sent, in GB, in the downlink direction over the previous 24 hours.

UL Tonnage (24hrs): The amount of data sent, in GB, in the uplink direction over the previous 24 hours.

DL Peak: The highest downlink rate, in Mbps, recorded within the last 150 seconds.

DL Peak (24hrs): The highest downlink rate, in Mbps, recorded with the last 24 hours.

UL Peak: The highest uplink rate, in Mbps, recorded with the last 150 seconds.

UL Peak (24hrs): The highest uplink rate, in Mbps, recorded with the last 24 hours.

Lifetime DL Peak: The highest downlink rate recorded, in Mbps, since the device was first seen in TCS.

Lifetime UL Peak: The highest uplink rate recorded, in Mbps, since the device was first seen in TCS.

DL Rate: The latest downlink rate, in Mbps, as sampled once every 30 seconds.

UL Rate: The latest uplink rate, in Mbps, as sampled once every 30 seconds.

SLA Profile: The service level agreement (SLA) profile refers to the maximum downlink bandwidth configured for the remote node. Uplink bandwidth is restricted via the downlink to uplink ratio defined by the network profile.

GPS Lock Status: GPS lock status indicates if the base node has successfully acquired enough satellites to determine its location. A base node must have GPS lock before it can transmit.

DL Packets: The number of packets transmitted in the downlink direction.

UL Packets: The number of packets transmitted in the uplink direction.

DL Bytes: The number of bytes transmitted in the downlink direction.

DL Tonnage (month): The amount of downlink data, in GB, transmitted in the last month.

UL Tonnage (month): The amount of uplink data, in GB, transmitted in the last month.

Retailer Name: When using the wholesale operations model, the name of the retailer operator.

Data VLAN: The VLAN ID number that will be used by the base node to tag user traffic egressing its active data port.

Availability: For the base node, this is the amount of time it was available during the calendar month, excluding power loss, reboot, manually muted radios, or backhaul outages. For the remote node, this is the time available during the calendar month, excluding power loss and reboot.

Last Disconnect Reason: The reason for the last link disconnect between a base node and a remote node.

Network Entry Time: The amount of time a remote node took to establish a link to the base node. This value resets each time the remote node reestablishes the link.

Primary BN: An administrator-defined base node that the remote node will always try to connect upon network entry. The remote node will only try to connect to another base node if the primary base node is unavailable.

Constrained Connected: Device has RF link but grant is not authorized. Data traffic can't be passed.

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