PAGING SUCCESS RATE 1.Purpose The purpose of this document is to provide an overview of Paging Strategy analysis. It also gives direction to the Paging Process, message flows in Paging, performance monitoring for Paging Success in the network, problems affecting paging performance and some solutions for the problems. 2.Overview Paging Success Rate (PSR ) gives an indication about the performance of an MSC, in terms of Terminating Traffic (Voice as well as SMS). Paging Success Rate is calculated as the ratio of the total no. of successful page attempts (first and repeated) to the total no. of first attempts. PAGING SUCCESS RATE= Total No. of Successful Page Attempts/ Total No. of First Attempts 3.Paging Flow When a Mobile Station (MS) is paged, a Paging message is sent from the MSC to each Base Station Controller (BSC) belonging to that MSC's service area (global page), or to those BSCs serving at least one cell belonging to the LA where the MS is registered (local page). For each Paging message received by the BSC, Paging Command messages have to be sent to all cells belonging to the LA where the target MS is registered. The number of cells in an LA ranges from a few tens up to perhaps one hundred cells, sometimes even more. This means that one incoming Paging message to the BSC leads to a considerably larger number of outgoing Paging Commands from the BSC. The BTSs have to broadcast all the incoming pages. The Paging Request messages are sent on the Paging Channel (PCH) on the Common Control Channel (CCCH). Too large LAs may lead to a too high paging load in the BTS resulting in congestion and lost pages due to capacity limitation on the air interface. Smaller LAs reduce the paging load in the BTSs as well as in the BSCs. However, smaller LAs also mean a larger number of LA border cells in the network. Each time an MS crosses the boarder between two LAs, a Location Updating is performed. The Location Updating affects the load on the signaling sub-channels, SDCCH, in the LA border cells. The SDCCH signaling capacity depends on the SDCCH configuration in the cell .
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PAGING SUCCESS RATE
1.Purpose The purpose of this document is to provide an overview of Paging Strategy analysis.
It also gives direction to the Paging Process, message flows in Paging, performance
monitoring for Paging Success in the network, problems affecting paging performance
and some solutions for the problems.
2.Overview Paging Success Rate (PSR ) gives an indication about the performance of an MSC, in
terms of Terminating Traffic (Voice as well as SMS). Paging Success Rate is calculated
as the ratio of the total no. of successful page attempts (first and repeated) to the total no.
of first attempts.
PAGING SUCCESS RATE= Total No. of Successful Page Attempts/ Total No. of First
Attempts
3.Paging Flow
When a Mobile Station (MS) is paged, a Paging message is sent from the MSC to each
Base Station Controller (BSC) belonging to that MSC's service area (global page), or to
those BSCs serving at least one cell belonging to the LA where the MS is registered
(local page).
For each Paging message received by the BSC, Paging Command messages have to be
sent to all cells belonging to the LA where the target MS is registered. The number of
cells in an LA ranges from a few tens up to perhaps one hundred cells, sometimes even
more. This means that one incoming Paging message to the BSC leads to a considerably
larger number of outgoing Paging Commands from the BSC.
The BTSs have to broadcast all the incoming pages. The Paging Request messages are
sent on the Paging Channel (PCH) on the Common Control Channel (CCCH). Too large
LAs may lead to a too high paging load in the BTS resulting in congestion and lost pages
due to capacity limitation on the air interface.
Smaller LAs reduce the paging load in the BTSs as well as in the BSCs. However,
smaller LAs also mean a larger number of LA border cells in the network. Each time an
MS crosses the boarder between two LAs, a Location Updating is performed. The
Location Updating affects the load on the signaling sub-channels, SDCCH, in the LA
border cells. The SDCCH signaling capacity depends on the SDCCH configuration in the
cell .
4.Paging Strategies
Paging strategy in the MSC is determined by the AXE parameters or the exchange
property settings. With the right paging strategy set in the network, we can always
minimize the unnecessary paging and the risk of paging overload in the interfaces is