Qucell SC-220, Руководство пользователя

Страница: 22 / 41

Qucell 4G/LTE Small Cell System Manual Version: 0.0.3
Qucell Confidential 22 2018-08-29
success response, grant status changes to “Authorized” and CBSD is ready to start service. CBSD
should send Heartbeat request message sequentially to maintain authorized grant. And CBSD can
send relinquishment message to remove grants.
Figure 15. CBRS Granted State Diagram
3.10.2.
Domain Proxy
Domain Proxy supports aggregating CBSD messages in CBSD – SAS interface. Following figure
describes CBSD – Domain proxy – SAS architecture. Domain proxy acts as CBSDs from SAS point of
view, so interface between Domain Proxy and SAS is almost same with CBSD – SAS interface. Likewise,
Domain proxy acts as SAS from CBSD point of view, so interface between Domain Proxy and CBSD
is almost same with CBSD – SAS interface.
Figure 16. CBSD – Domain Proxy – SAS Architecture
Domain Proxy
SAS
CBSD 1 CBSD 2 CBSD n
DPX-CBSD interface
DPX-SAS interface