Hi experts,
I would like to ask if there are Huawei Core Network parameters, timers, or feature switches that can be tuned to improve user experience KPIs and service performance, while not negatively impacting other KPIs or services in the core or radio network.
I am interested in practical optimization examples in Huawei Core domains such as:
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CS Core
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PS Core / EPC
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IMS
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UDM / HSS
Examples of parameters or areas I am thinking about include:
Mobility & Attach / Registration
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T3412 (Periodic TAU timer)
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T3402 (Backoff timer)
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T3410 / T3411 (Attach procedure timers)
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Registration timers in 5G (T3512)
Paging & Idle Mode
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Paging cycle / DRX related parameters
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Paging retry timers
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Paging success optimization between Core and RAN
IMS / VoLTE
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SIP timers (Timer B, Timer F, Timer H, Session timers)
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Registration expiry timers
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Session refresh timers
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VoLTE call setup related parameters
Session & Data Connectivity
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Default bearer establishment timers
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S1AP / NGAP procedure timers
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Idle/active context release timers
My goal is to identify safe tuning opportunities that can improve KPIs such as:
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Call Setup Success Rate (CSSR)
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Call Setup Time
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VoLTE accessibility
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Attach / Registration success rate
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Paging success rate
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Data session setup success
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User perceived latency
without negatively impacting RAN signaling load, core signaling load, or other services.
If anyone has experience with Huawei-specific optimization (timers, feature switches, signaling parameters) in live networks and can share best practices or lessons learned, I would really appreciate your insights.
Thank you.