From the course: NB-IoT (Narrowband IoT) Engineering: Deployment, Configuration, Call Flow Analysis

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How paging works in NB-IoT

How paging works in NB-IoT

From the course: NB-IoT (Narrowband IoT) Engineering: Deployment, Configuration, Call Flow Analysis

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How paging works in NB-IoT

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Imagine an NB-IoT water meter which is in a deep asleep mode in a basement to save battery. But suddenly the utility company needs to read it. How does the network efficiently find and wake up this one specific device among millions without draining its battery? And the answer lies in NB-IoT's sophisticated paging procedure. Well, the paging process begins when the core network sends a paging request, which is S1 AP paging request. This message is the trigger instructing the base station to locate a specific device. This request is distributed to all the NB-ID cells in the device register tracking area. The base station then calculate the precise moment to page the device. There's a paging occasion and paging frame, which are calculated using two key inputs. The network paging configuration parameter broadcasts in system information block 2 which is SIP2 and the device has a unique ID which is UEID and this ensures the device only needs to briefly wake up at a specific predetermined…

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