We are excited to announce that the Grant Reauthorization feature, FCC Public Notice DA 23-867, is now available on Google SAS. This allows CBSDs to continue transmission on channels not impacted by DPAs, without reauthorization from SAS in the case of connection loss. This opens the door for mission critical applications where loss of backhaul or connection to SAS does not cause CBSDs any interruption on the transmission authorization of any grants meeting criteria captured in the table below.
Customers can opt-in to start using this feature now via this form. We recommend customers confirm with their CBSD vendors that interoperability testing for this feature has been completed.
We are planning to roll out this feature for all customers in March 2024.
What is the Grant Reauthorization feature?
The FCC recently approved FCC Public Notice DA 23-867. To support this, Google SAS will now provide an extended transmitExpireTime, from 4 minutes to 6 hours, for grants with no DPA impact.
Please see below for a table of expected SAS behavior:
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transmitExpireTime included in heartbeat response
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Suggested heartbeatInterval included in grant response
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CBSD located outside of DPAs
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6 hours after the most recent Authorized heartbeat response
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30 minutes
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CBSD located in a DPA for a grant in the 3550 to 3650 MHz range
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4 minutes after the most recent Authorized heartbeat response
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60 seconds
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CBSD located in a DPA for a grant in only the 3650 to 3700 MHz range
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6 hours after the most recent Authorized heartbeat response
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60 seconds
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For customers - Opt-in to start using this feature now
SAS customers can request this feature be enabled on a per-user ID basis by submitting this form. Make sure to include all user IDs you wish enabled when making the request. Please note that this feature will be enabled for all devices registered with that user ID, so please confirm with your CBSD vendor that they have tested this feature before making your request.
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