The Access Points Details Page

The Access Points details page shows the Configurations and Monitoring information about an Access Point assigned to a site on the Celona Network. This includes;

  • Operational State

  • Advanced configuration

  • Radio Details

  • Antenna Configuration

  • and Devices connected.

To open the Access Points Details page, click the Access Point name on the Access Points inventory page in Celona Orchestrator.

Configuration Details

The Configuration Details card highlights all the advanced Wireless configurations on the Access Point. Each parameter provides information to help monitor performance and mobility on the Access Point.

To view the configuration parameters on the Access Point, it must be assigned to a site and be in status 'Transmit RF UP'. The Celona Edge assigned to the site must be running version 2206 or higher.

Parameters and What they mean:

Carrier Aggregation (Read-Only)

Enabling Carrier Aggregation doubles the bandwidth and thereby the bitrate on the Downlink and capacity of the network by combining CC (Component Carriers) to 40MHz.

Carrier Aggregation is applicable to Indoor Access Points and Outdoor Access Points with an external Omni Antenna.

Handover Parameters (Read-Only)

This section highlights the thresholds configured in Handover/Mobility capability between Access Points on the network.

  • A1 - Event A1 is triggered when a mobile device is at a location where Serving radio RSRP becomes better than A1 threshold

  • A2 - Event A2 is triggered when a mobile device is at a location where Serving radio RSRP becomes worse than A2 threshold

  • A3 - LTE Event A3 is triggered when a neighboring cell becomes better than the serving cell by the A3 offset value. Event A3 is used to trigger intra-frequency mobility, where the device moves between two radios on the same frequencies.

  • A5 - LTE Event A5 is triggered when a mobile device is at a location where the serving radio becomes worse than the A5_1 threshold while a neighboring radio becomes better than the A5_2 threshold. Event A5 is used to trigger inter-frequency mobility, where the device moves between two radios operating on different frequencies.

  • TTT (Time To Trigger) - The criteria for each mobility event trigger must be satisfied during the time to trigger. For example, if the TTT is set to 480ms, the mobile device has that long to report measurements before it can move to a different radio.

  • Hysteresis - RF measurements can widely vary from ±3dB to ±7dB or more. The hysteresis mobility margin is to avoid ping-pong mobility/handover effects and ensure neighbouring radio RSRP is better than serving radio RSRP.

Neighbour List (Read-Only)

The neighbor list per radio/sector is configured with the channels in use by the potential target Access Points radios that a mobile device can move/handover to within the network.

Frequency Band (Read-Only)

The TDD (Time Division Duplex) Frequency band is allocated for the Access Point in LTE/5G and represents blocks of sequential LTE frequency ranges.

The Frequency Band 48 CBRS (Citizens Broadband Radio Service) seen below is often referred to as the private LTE. It’s a total 150MHz within the 3500 MHz spectrum band that stretches between 3550-3700MHz (or 3.55-3.7GHz), operating in the LTE spectrum in the United States.

TDD Configuration (Read-Only)

Celona uses TDD Duplex Mode for the frequency bands supported. In a TDD system, a single frequency is shared in the time domain between Uplink and Downlink. In TDD, supported frame configurations are based on different DL/UL partitions. Celona pre-configures a specific TDD configuration depending on the service requirements of the customer.

Supported Subframe configurations:

TDD Subframe Configuration 1:

Selects more Uplink subframes when the use case requires a greater proportion of Uplink data. This is when most traffic is uplinked e.g. CCTV/IP camera applications, from remote cameras to the base

TDD Subframe Configuration 2:

Selects more Downlink subframes when use cases require a greater proportion of Downlink data. E.g. Internet /ISP applications.

PLMN ID (Read-Only)

The Celona network is identified using Public Land Mobile Network Identity (PLMN-ID) which consists of a three-digit mobile country code (MCC) and a three-digit mobile network code (MNC).
The PLMN ID = 315010 seen below is designated for CBRS operation and is recognized across CBRS systems.

Tracking Area Code (Read-Only)

Tracking Area Code (TAC) identifies the Tracking Area that serves a group of Access Points in a single core network. If a Mobile Device/ UE moves between different Tracking Areas, it would page the Core network with a Tracking Area Update specifying its current location (Tracking Area).

The TAC = 2301 assigned below means that the mobile device can move within this Tracking Area without changing its serving network.

Time Sync Configuration (Edit)

This configuration specifies the current protocol this Access Point uses to Time Sync with other Access Points on the Celona Network. This configuration can be edited from the Access Points Details page or in bulk from the Site Details page.

Refer to the Time Sync Configuration document for additional information and a guide to configuring a timing synchronization source for APs on your Celona network.

Radio Details

The Radio Details card can be seen on the Access Points Details Page below the Configuration Details card.

The LTE Celona Access Points are dual radio hardware, and each radio can be controlled separately.

This card lists the "live" Configuration for Radio /Sector on the Access Point.

Channel ID - LTE channel IDs are identifiers calculated using the center frequency of the radio frequency range configured in the operating frequency band

Channel Bandwidth (MHz) - A frequency band (in the above case, CBRS Band 48) is divided into smaller segments called channels. How wide each channel is and how much frequency range it covers is called the Channel bandwidth.

Frequency (MHz) - The center frequency of the configured frequency range on each radio on the Access Point.

For example: Center Frequency = 3640MHz with channel Bandwidth = 20MHz

Frequency range used by the radio = 3630MHz -3650MHz

PCI - Physical Cell Id (PCI) is used by the User devices to identify each radio on the Access Point. PCI planning across a multi- Access Point network results in efficient resource utilization and hence improved network performance.

Power Level (mWatt/dBm) - The Output Tx power from each Radio on the Access Point converted.

Operational Status - Each radio's operational state is represented in the card by either Up / Down.

If both Radios on the Access Point are Up, the Access Point is operating at full capacity.

If one of the Radios on the Access Point is Down, the Access Point is operating at reduced capacity.

A radio could go down due to a SAS-triggered event. Some FAQs are answered in this document.

If both Radios on the Access Point are Down, the Access Point is not transmitting and User devices won't be able to connect to this Access Point.

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