5G SSB (Synchronization Signal Block) frequency domain position can influence and impact many KPIs, including Access time, UE Battery consumption, Handovers, and Interference? The following two points address this concern.
(1) In the event that you have different bandwidth configurations operating under the same frequency band, for example, n78 operating with 80MHz at Site A and with 60MHz at Site B, as shown in the picture below:
– Ensure the Synchronization Signal Block (SSB) is configured for all sites at the exact frequency location. This will reduce unnecessary inter-frequency handovers and mitigate interference caused by SSB <–> Physical Downlink Shared Channel (PDSCH).
(2) It is recommended to configure the Synchronization Signal Block (SSB) frequency domain position at the bottom/start of the band, especially in 5G Standalone, to reduce cell search time. This, in turn, will improve access delay and UE battery consumption.
Note:
– Mobility decisions are primarily made based on the Synchronization Signal Block (SSB).
– The SSB position, in general, can be automatically configured by some vendors.