LTE Paging in detail

Paging procedure in LTE
In Long-Term Evolution (LTE) cellular networks, paging is used to alert a specific user
equipment (UE) that there is data waiting for it on the network. Paging is typically used
when the UE is in an idle state, which means that it is not currently communicating with the
network.
When the network has data to send to a particular UE, it will initiate a paging procedure by
sending a paging message to all cells that the UE is registered with. The message includes
the identity of the UE and the location of the cell where the UE is expected to be located.
The UE monitors the paging channel of the cell it is currently camped on and will respond to
the paging message if it recognizes its identity. If the UE does not respond within a certain
time frame, the network will assume that the UE is not available and will retry the paging
procedure in other cells where the UE is registered.
The paging procedure is an important component of the LTE network's signalling overhead,
and efforts are made to minimize its impact on network resources. Techniques such as
paging group optimization and paging based on location information can be used to reduce
the number of cells that need to be paged, resulting in a more efficient use of network
resources.
Why Paging is required?
➢ Battery Life: When a UE is in an idle state, it periodically wakes up to check for any
new data that may be waiting for it. This process consumes power and can drain the
UE's battery life. Paging reduces the need for the UE to continuously monitor the
network by allowing the network to notify the UE only when data is waiting for it.
This can help to extend the UE's battery life.
➢ Network Efficiency: Paging allows the network to reduce the amount of signalling
required to deliver data to the UE. Instead of constantly communicating with the
network, the UE only needs to be notified when data is available. This can help to
reduce signalling overhead and improve network efficiency.
➢ Network Coverage: Paging allows the network to deliver data to a UE even when it is
not actively communicating with the network. This can help to improve network
coverage and ensure that data can be delivered to the UE regardless of its current
state.
www.techlteworld.com
➢ User Experience: Paging helps to ensure that the UE receives important information
or notifications in a timely manner. This can be critical for services such as emergency
alerts, where delays can have serious consequences.
➢ Network Congestion: When a large number of UEs are actively communicating with
the network, paging can help to reduce network congestion by reducing the amount
of signalling required to deliver data to idle UEs.
➢ Roaming: When a UE roams between different cells or networks, paging allows the
network to locate the UE and deliver data to it. This can be important for services
such as voice calls, where the UE must be reachable at all times.
➢ Security: Paging can be used as a security feature in LTE networks. For example, the
network can page a UE to verify its presence in a specific location and prevent
unauthorized access.

[@atifhasan7863]

Great..

[@Pravat6262]

SUPERB EXPLANATION

[@aliabdelsalam4987]

Thanks for the great video!!
I have a quick question?
As you know that the paging strategy might vary , for example: 1st paging could be done on the last eNb the UE was attached to and the 2nd could be for neighboring eNbs and the 3d could be by TMSI , so how many UEs could be paged on each time in order to calculate the paging dimension properly..
Thanks