Citizens Broadband Radio Service (CBRS)

This chapter details cnMaestro support for the Citizens Broadband Radio Service (CBRS) subscription which is required to manage CBRS-compliant devices in the 3.6 GHz band (3550 MHz to 3700 MHz).

This topic describes the following sections:

Enabling CBRS in Cloud

  1. Login to a cnMaestro Cloud NMS account or Cloud Anchor account (if hosting on an On-Premises instance).

  2. Navigate to Network Services > CBRS page.

  3. Select the preferred SAS vendor from the Spectrum Access System (SAS) dropdown list.

    Figure 1 Network Services > CBRS > Account tab

  4. Read both the terms and conditions, and accept them by selecting the checkboxes.

  5. Click Enable.

  6. In the Billing Information window configure the following details:

  7. Click Save.

    The CBRS account is enabled.

After you save the CBRS account, you must complete the following steps:

  1. The Account page displays the following information and configurable parameters:

Management Tool

The Management Tool allows one to register CBRS devices to the SAS provider before physically connecting CBRS-complaint devices to the network. The following Cambium CBRS-compliant devices operate in 3.6 GHz band frequency, ranging from 3550 to 3700 MHz:

Note

The CBRS Multi-Grant feature was first supported in cnMaestro 3.0.2 and PMP 20.2.

The CBRS procedure can be performed by an authorized CPI (Certified Professional Installer). CPIs are required to enter necessary credentials to update the CBRS parameters.

A CBRS sector view is shown below:

Export

The Export button allows one to export multiple device reports in the CSV format.

Relinquish Grant

The Relinquish Grant button relinquishes all grants of selected sector and places devices in the Registered state. The device will start the Multi-Grant procedure if the Multi-Grant feature is enabled on the device.

Note

  • Relinquish Grant can be performed only for the Config_Synced devices running in Single Grant.

  • PMP devices must be upgraded to release 20.2, which supports the Multi-Grant feature.

Relinquish grant creates a job in Action page, when relinquish of sector is initiated from Management Tool page.

Creating a Management Tool Sector

A sector can be created by two ways:

Add AP/BHM

  1. Navigate to Services > CBRS > Management Tools and click Add AP/BHM/RRH.

  2. Enter all parameters under the following categories when the user selects the Mode as AP/BHM:

    Note

    Include User ID parameter is applicable only for PMP devices, when SAS is Federated Wireless.

    Select Yes or No to Include the user ID.

  3. Click Add to add a sector.

Add RRH

  1. Navigate to Services > CBRS > Management Tools and click Add AP/BHM/RRH.

  2. Enter all parameters under the following categories when the user selects the Mode as RRH:

  3. Click Add to add a sector.

    Note

    Refer to CBRS Device Parameters for additional details.

Import Management Tool Sector

To import a sector:

  1. Navigate to Services > CBRS > Management Tool and click Import Sector button.

  1. Click Download Template if user does not have an Import Sector template. Users can download two different template formats:

    1. PMP: Excel or ODS

    2. LTE: Excel or ODS

  2. Click Import Excel to select Import Sector template file. File must be Microsoft Excel format (.xlsx) or OpenDocument Spreadsheet (ods) format.

  3. Enter CPI credentials:

    1. Upload CPI Certificate File by clicking Import Certificate.

    2. Enter CPI File Password.

    3. Enter CPI Registered Name.

  4. Enter the Sector ID.

  5. Select Spectrum Reuse ID from the dropdown list.

  6. Select Include User ID.

    Selecting Yes in the Include User ID parameter prefixes the User ID to the Sector ID and Spectrum Reuse ID in the registration message of the SAS.

    Note

  7. Click Import.

    Import status is displayed as Success, Info, and Invalid.

  8. Details of Success, Info, and Invalid section can be seen by clicking expand ( ) arrow.

  9. If the device is already claimed, it can be onboarded by clicking the onboard link.

Management Tool Sector Statistics

To view Sector Statistics:

  1. Navigate to Services > CBRS > Management Tool.

  2. Click View Sector Statistics under Status.

  3. Sector Statistics window pops up.

Note

Refer to the CBRS State Diagram for additional details.

Search Management Tool Sector

To search for a sector:

  1. Navigate to Services > CBRS > Management Tool.

  2. Select CBSD or MAC.

  3. Enter text in search box to display filtered records.

    Note

    • If an AP device is entered into Search, it displays both AP devices and the related SM devices.

    • If an SM devices is entered into Search, it displays only SM devices.

1. Filter AP or sectors can be cleared by clicking or Clear button.

Sector View

  1. Click a sector from the Sector AP column to get the list of devices.

  2. All devices of the sector are displayed.

Sector Details View

Add SM or BHS

  1. Navigate to Services > CBRS > Management Tool > select a sector.

  2. Click Add SM or BHS to add SM in a sector.

  3. Enter all parameters under following categories:

  4. Click Add to add an SM.

Import SMs

  1. Navigate to Services > CBRS > Management Tool and select a sector.

  2. Click Import button to import SMs into a sector.

  3. Enable the ReImport Devices to overwrite the previous imported data and deregister all existing devices.

  4. Click Download Template if user does not have Import Sector template. Users can download two different template formats:

  5. Click Import Excel to select Import Sector template file. File must be Microsoft Excel format (.xlsx) or Open Document Spreadsheet (ods) formats.

  6. Enter the following CPI credentials:

  7. Click Import.

    Import status will be shown under Success, Info, and Invalid sections.

  8. Details of Success, Info and Invalid can be seen by clicking .

  9. If the devices is already claimed, it can be onboarded by clicking the onboard link.

  10. Once the user clicks Import, a job is scheduled.

Export Sector

  1. Navigate to Services > CBRS > Management Tool and then select a sector.

  2. Click Export button to export the sector (export as xlsx).

  3. Once the user clicks Export, a job is scheduled.

  4. Once the Job status is Completed, Download the Sector xlxs.

    Note

    Download button is enabled only for two hours after the export job completes.

  5. User can use the .xlxs file for importing back into the sector. To import, save the file as shown in the below figure.

Edit Device

  1. Navigate to Services > CBRS > Management Tool and select a sector.

  2. Click Stop button if the CBRS procedure is running.

  3. Click Edit button to edit device parameters.

  4. Enter CPI credentials:

  5. After editing the device. The device should go to derigestered state.

  6. Click Save.

Delete Device

  1. Navigate to Services > CBRS > Management Tool and select a sector.

  2. Click Stop button if the CBRS procedure is running (the CBRS procedure is running if the START procedure described below has been invoked, and if all devices in AUTHORIZED state).

  3. Deleting SM:

  4. Once the SM is selected, choose the appropriate option from the Delete dropdown list:

  5. Click Yes to confirm.

    The following confirmation message is displayed when you select the Selected option from the Delete dropdown list.

  6. After confirmation, a job is scheduled.

  7. Deleting AP:

    All SMs of the sector must be deregistered and deleted before deleting the AP. Refer to the Deregistration procedure to deregister all SM devices.

  8. Select the AP of the sector to delete.

  9. Click Delete.

    Note

    If the procedure is started for the device and it is registered, then, while deleting the device, you must select the Deregister checkbox, otherwise the deletion will fail.

Unblock Device

  1. Navigate to Services > CBRS > Management Tool and select a sector.

  2. If LTE device is Config Synced, and if device deregister flag is enabled, unblock removes the deregistartion flag on the device.

  3. Once the device is selected, click Unblock and choose All or Selected from the dropdown list.

  4. Click Selected display the Please Confirm window.

  5. Click Yes to confirm the action.

Start CBRS Procedure

The Start button starts the CBRS procedure for a sector.

  1. Navigate to Services > CBRS > Management Tool and select a sector.

  2. Click Start to start CBRS procedure of a sector.

  3. Once the user clicks start, the Spectrum Inquiry window pops up.

    Note

    • Multi-Grant is enabled by default.

    • Sorted By Ranking is applicable for users selecting Google or Federated Wireless SAS.

    • User can enable or disable the multigrant only if the device version is less than 21, if device version is 21 and above only multigrant is possible.

  4. User can disable the Multi-Grant feature by disabling the checkbox This feature will enable multi grant on the tool. For more details refer Multiple Grant.

  5. Click Edit to edit Co-Existence Configuration and EIRP Computation.

  6. Once the Spectrum Inquiry is verified, click Save.

    The Sector is created displays as shown below:

    Note

    • If the device is already synced with the Management Tool, the CBRS Start and Stop procedures are not applicable for all the synced devices.

    • If user does not see the Start button, it means the CBRS procedure is already running.

    • If all devices of the sector are in AUTHORIZED or HALT status and the user tries to start the CBRS procedure, the Start button will go to Stop state (as CBRS procedure is completed for all devices).

Multi-Grant

Multi-Grant feature divides selected channel bandwidth into multiple of 10 MHz channels. If the selected channel bandwidth is 5 MHz or low/high frequency contains 5 MHz raster, the slice would be in 5 MHz channel. Each slice will initiate a separate Grant procedure.

To enable Multiple Grant for a new sector:

  1. Navigate to Services > CBRS > Management Tool and select a sector.

  2. Click Start to start CBRS procedure of a sector.

  3. Once the user clicks Start.

    The Spectrum Inquiry window pops up as shown below.

    Note

    • Multi-Grant is enabled by default.

    • Include User ID is applicable only for PMP devices, if user selects SAS is either Federated Wireless.

  4. Click Edit to edit Co-Existence Configuration and EIRP Computation.

  5. Accept the checkbox process of the Co-Existence parameters.

    Note

    The Federated Wireless or Google SAS might need hours to fully process the Co-Existence parameters in the Registration, (before they are properly reflected in the Spectrum Inquiry Response). For more details see the CBRS Standalone Procedures Guide.

  6. Once the Spectrum Inquiry is verified, click Save.

    A Sector created with Multiple Grants will be displayed as shown below:

  7. To view the Grant Status click the info () icon.

Relinquish Grant

Relinquish Grant relinquishes all grants of selected sector. This will make devices enter the Registered state. The device will start Multi-Grant procedure if Multi-Grant feature is enabled on it.

To Relinquish Grant Perform as follows:

  1. Navigate to Services > CBRS > Management Tool and select a sector with Single Grant.

  2. Once the SM is selected, click Relinquish Grant to display All or Selected. Click Selected.

  3. Click Yes to confirm the action.

    Note

    Live update information may take upto several minutes to display the changes of reflected relinquish status.

  4. Once the user clicks Yes, Wider Grant gets converted to the Multiple Grants as shown below:

Stop CBRS Procedure

The Stop button stops the CBRS procedure for a sector.

  1. Navigate to Services > CBRS > Management Tool and select a sector.

  2. Click Stop button to stop CBRS procedure.

    Note

    • If the device is already synced with the Management Tool, the CBRS Start and Stop procedures are not applicable to the synced devices.

    • If user does not see the Stop button, it means the CBRS procedure is already in stopped state, Start and Stop are toggles.

    • If all devices of the sector are in AUTHORIZED state, the CBRS procedure will automatically stop.

Reinitialize CBRS Procedure

The Re-init button allows the user to start the CBRS procedure for a sector and reinitialize selected devices (Reinitialize = Start of sector + Reinitialization of user selected devices). At least one device must be selected in order to enable the Re-init button. Clicking Re-init reinitializes selected devices to UNREGISTERED (irrespective of previous CBRS state).

  1. Navigate to Services > CBRS > Management Tool and select a sector.

  2. Click Stop if the CBRS procedure is already running.

  3. Select one or more devices to be reinitialized.

    Note

    You might notice some delay in enabling Re-init button after pressing Stop. It is due to a delay in properly stopping the CBRS procedure.

  4. Click Re-init to start the reinitialization procedure

  5. Confirmation window pops up:

Note

  • Synced devices cannot be reinitialized.

  • Reinitialize modifies or corrects the parameters. For example, if a device is in HALT state due to a parameter error, the user can stop the CBRS procedure and reinitialize the device after modifying device parameters.

Deregistration

The deregistration procedure allows user to deregister the devices from the SAS server .

  1. Navigate to Network Services > CBRS > Management Tool and select a sector.

  2. Click Stop button if the CBRS procedure is already running.

  3. Select one or many devices which need to be deregistered.

  4. Click Deregister button to deregister selected devices.

    Once the user clicks Deregister, a job is scheduled.

  5. If the deregistration fails, the reasons will be indicated under .

Spectrum Inquiry

  1. Navigate to Services > CBRS > Management Tool and select a Sector.

  2. Click Spectrum Inquiry button.

  3. Spectrum Inquiry status button is enabled once the device is registered (REGISTERED state) to the SAS.

Spectrum availability can be checked by hovering over frequencies.

Device Sync

The Sync procedure allows user to transfer grant information from Management Tool to respective device.

For a PMP sector, the Sync action can only be performed on an AP or BHM. The SM and BHS gets synced automatically when it comes online.

For an LTE sector, which supports a Cambium SM with a 3rd party BBU and RRH, the sync action will sync the Cambium SMs in this sector.

  1. Navigate to Services > CBRS > Management Tool and select a sector.

  2. Click Sync button to perform sync procedure.

  3. Click Yes on the pop-up or click NO to cancel the sync procedure.

Once Yes is clicked, the Management Tool will check the accessibility of AP/BHM before proceeding with sync.

Note

  • PMP SM cannot be manually synced. It is only synced automatically.

  • Once the device is synced, for both PMP and LTE devices, primary management is transferred from the tool to the device itself. However, some actions and procedures are still supported on the tool. See the CBRS Consolidated Procedures Guide for more details.

  • Sync procedure copies complete CBRS parameters to device and enables CBRS to transmit with configured parameters.

Live Status Update

Once the device is Config synced, CBRS details like CBSD ID, Grant ID, CBSD Grant State, and Last Heartbeat Time are read from the device every 5 minutes.

It displays the possible single Grant state such as:

Domain Proxy View

Note

Domain Proxy View is available only on cnMaestro Cloud and the Cloud Anchor account.

In Domain Proxy view, Sectors and Non-Sector page helps check CBRS-complaint devices connected through this server and On-Premises server using the token ID of this server. This page displays all the devices connected to CBRS.

Searching a Domain Proxy Sector

To search a sector:

  1. Navigate to Services > CBRS > Domain Proxy View > Sector page.

  2. Select search option CBSD or MAC.

  3. Enter text in search box.

    Note

    • If AP device is entered , it displays the both AP devices and the related SM device in the search result.

    • If SM devices is entered , it displays only the SM devices in the search result.

  4. Filtered device can be cleared by clicking Clear button.

Domain Proxy Sector view

  1. Click a Sector from Sector AP column to get the list of devices.

  2. All the devices of the sector will be displayed.

  3. CBSD state shows current status of device and whether it is registered or deregistered with SAS.

  4. Click Deregister to deregister the device from CBRS.

  5. The Sectors view displays the following columns by default:

    Device Name, Device Type, Mode, User ID, Center Frequency (MHz), Channel BW (MHz), CBSD ID, and Active S/W Version.

Searching a Domain Proxy in Non Sector View

To search for a device in the non-sector view, complete the following steps:

  1. Navigate to Services > CBRS > Domain Proxy View > Non Sector page.

  2. Select one of the following search options from the dropdown list—CBSD, MAC Address, or Heartbeat Status.

Note

Information in the Heartbeat Status and Last Heartbeat columns is displayed only for registered devices.

cnMaestro checks the heartbeat status of a CBRS device every 12 hours. The following statuses are updated in the Heartbeat Status column, based on whether the device is online or offline:

  • Heartbeating: When the device is online and the heartbeat check is successful.

    Also, the last successful heartbeat time is updated in the Last Heartbeat column.

  • Not Heartbeating: When the device is offline for 24 hours or more.

CBRS State Diagram

Note

GRANT_SUSPENDED is a temporary suspend state where HEARTBEAT message is sent for an extended period of time prior to obtaining the AUTHORIZED state.

CBRS Device Parameters

Category Parameter Details

 

 

 

 

 

Common

Channel BandWidth (MHz) Channel Bandwidth of AP or BHM in MHz.
Center Frequency (MHz) Center frequency of AP or BHM in MHz.
Device Name Name given to device on SAS Admin (A maximum of 120 characters are supported. However, this name is not copied to the device when synchronized.)
Device Type Type of device.
MAC Address MAC address of the device.
MSN Serial number of device.
User ID Unique identifier is assigned by the SAS. The User ID is part of the registration request message. The wrong User ID leads to REGISTRATION_FAILED.

 

 

 

Location

Height Device antenna height in meters.
Height Type

Should be AGL or AMSL as follows:

  • AGL height is measured relative to the ground level.

  • AMSL height is measured relative to the mean sea level.

Horizontal Accuracy A positive number in meters to indicate the accuracy of the device antenna horizontal location.
Latitude Latitude of the device antenna location in degrees.

 

Longitude Longitude of the CBSD antenna location in degrees.

 

Vertical Accuracy A positive number in meters to indicate the accuracy of the device antenna vertical location.

Co-Existence Related Parameters

Sector ID

The default AP MAC address (allows editing the default MAC).

Spectrum Reuse ID 

The Spectrum Reuse ID defined in the network.

Include User ID Prefixes the User ID to the Sector ID and Spectrum reuse ID.

 

ECGI Related Parameters

PLMN ID

Public and Mobile Network Identifier.

ECI

E-UTRAN Cell Identifier. It is a length of 28 bits and contains the eNodeB-ID.

ECGI

Enter the both PLMN ID and ECI parameters and it displays in the ECGI field.

 

 

Antenna Parameters

Azimuth (degrees) Boresight direction of the horizontal plane of the antenna in degrees with respect to True North.
Beamwidth (degree) 3-dB antenna beam width of the antenna in the horizontal-plane in degrees.
Downtilt (degrees) Antenna downtilt in degrees.
External Antenna Gain (dBi)

Peak gain of external antenna connected to device in dBi.

Integrated Antenna Gain (dBi)

Peak gain of integrated antenna in dBi.

 

Add Certificate

Certificate File CPI (Certified Professional Installer) certificate.
CPIR Name CPI registered name.
File Password CPI private password.

Actions for Existing CBRS On-Premises Users

Current CBRS On-Premises customers maintain their CBRS billing and SAS configuration in an NMS Account. This must be updated to support Anchor accounts. To create an anchor account, refer to Manage Instances.

If an action is required for existing Cloud NMS users, the UI will display the following notification:

After clicking the notice, navigate to Services.

Link an Anchor Account to this Account

Select this to manage CBRS devices in both Cloud and On-Premises. An Anchor account must be created to manage the CBRS On-Premises devices without deregistration.

Note

Cambium recommends selecting this option when the user is managing devices in both cnMaestro Cloud and On-Premises.

Before linking an Anchor account, please do the following:

To convert the existing account:

  1. Navigate to Services > CBRS > Account page.

  2. Select Anchor Account from the dropdown list.

    Note

    Users are allowed to select only one Anchor account from the dropdown list.

  3. Enable I authorize Cambium Networks to make changes to the selected account.

  4. Click Request Support and a Success window pops up.

Note

The Cambium Support team validates the request and creates an Organization from the NMS and Anchor accounts within 24 hours. Alternately, you can create the Organization yourself using the directions specified earlier in this document.

Convert this Account to Anchor Account

Select this to manage CBRS devices in On-Premises only. It converts an existing NMS account to an Anchor account.

Note

Cambium recommends selecting this option when the user only plans to manage devices using cnMaestro On-Premises. Cloud account devices must be deregisted and deleted from the NMS account and registered back to On-Premises before the conversion.

To convert the existing account:

  1. Navigate to Services > CBRS > Account page.

  2. Select Convert this Account to Anchor Account.

    Note

    • Deregister and remove all devices from the NMS account before the conversion.

    • All NMS configuration will be lost when the account is converted to Anchor, including:

      • Guest Access Portal

      • Templates

      • Performance Graph Data, etc.

    • The process of converting an NMS account to an Anchor account cannot be reversed.

  3. Provide your consent by selecting the I authorize Cambium Networks to make changes to the selected account checkbox.

  4. Click Request Support and the following success message is displayed.

    The Cambium Support team validates the request and creates an Organization from the NMS and Anchor accounts within 24 hours.