As per 3GPP specifications, the 5G is design and developed to support three major use cases i.e. eMBB (Enhanced Mobile Broadband), URLLC (Ultra Reliable Low Latency Communication) and mMTC (Massive Machine Type Communication). During the first phase of 5G we will be using the eMBB service with Mobile Devices, CPEs etc.
When a new device is launched by any Device Manufacture (Samsung, Vivo, Apple etc.), it goes through Device Inter-operatability procedure where service provider (Operator) and device vendor agrees on certain test cases. The agreed Inter-op testcases are performed in lab and field environment. In this post we have captured, the most common test cases performed recommended by Next Generation Mobile Networks Alliance
- Test to verify, the network selection priority as 5G > LTE for SA network mode for 5G UE
- Test to verify , the network selection priority order as LTE > 3G > 2G For NSA network mode
- Test to verify, the network selection priority as SA > NSA for the UEs supporting NSA and SA
- Test to verify 5G UE support RSRP/RSRQ/SINR measurement including NR intra-frequency and inter frequency measurements
- Test to verify UE support Intra-RAT Cell reselection and Handover
- Test to verify UE support single-registration mode in SA network mode with N26 interface
- Test to verify UE support 5G->4G interworking procedure with the N26 interface: Cell reselection, Handover and Redirection
- Test to verify UE support 4G->5G interworking procedure with the N26 interface: Cell reselection and Redirection
- Test to verify UE support 4G->5G interworking procedure with the N26 interface: Handover
- Test to verify UE support single-registration mode in SA network mode without N26 interface
- Test to verify UE support 5G->4G interworking procedure with out the N26 interface: Cell reselection and Redirection
- Test to verify UE support 4G->5G interworking procedure with out the N26 interface: Cell reselection and Redirection
- Test to verify UE support fast return to NR network at the end of EPS Fallback voice service
- Test to verify UE support NR frequency search and access according to RRC Connection Release message when Fast return by Redirection signaling is supported by network
- Test to verify UE support NR frequency search and access when Fast return by Redirection signaling is not supported by network
- Test to verify UE support the above return mechanism at the end of VoLTE voice service after performing handover from VoNR voice service to VoLTE voice service and if there is no data service
- Test to verify UE support For 4G->5G interoperability, support background search in idle state in the case that 4G network is not configured with 5G neighbourhood cell
- Test to verify UE support In a EN-DC configuration, addition of SCG with asynchronous E-UTRAN and NR networks
Voice Services Verification
- Test to verify UE support EPS Fallback in SA network mode
- Test to verify UE support VoNR in SA network mode
- Test to verify UE support VoLTE/CSFB in NSA network mode
- Test to verify UE support SIP/IMS protocol in 5G
- Test to verify UE support fall back to 4G voice solution by handover or redirection
- Test to verify UE support voice setup over 5G
- For VoNR, Support header compression, RLC segmentation, Slot aggregation, Downlink SPS, and Configured Grant
- Support voice code codec adjustment triggered by network through MAC CE
- Support AMR-NB codec：12.2kbps, 10.2kbps, 7.95kbps, 7.40kbps, 6.70kbps, 5.90kbps, 5.15kbps, 4.75kbps
- Support AMR-WB codec：23.85kbps, 23.05kbps, 19.85kbps, 18.25kbps, 15.85kbps, 14.25kbps, 12.65 kbps, 8.85kbps, 6.6kbps
- Support EVS codec：13.2kbps, 24.4kbps
- Support H.264, H.265 Video codec
- Support NR IMS Emergency call
- Support fall back (Redirection, Handover) to LTE for
Emergency call - SMS over IP
- SMS over NAS
- Support distinguishing between 4G USIM card and 5G USIM card in SA mode
- In the scenario of using 4G USIM card to access NR network, in the case that 4G USIM card does not support 5G related fields: UE support storing 5G asthe highest priority, for HPLMN, UPLMN and OPLMN selection
- In the scenario of using 4G USIM card to access NR network, in the case that 4G USIM card does not support 5G related fields: UE support storing 5G PLMN information that has been successfully registered and will use it for the next switch-on network selection
- In the scenario of using 4G USIM card to access NR network, in the case that 4G USIM card does not support 5G related fields: UE support storing 5G NAS security context
- Have the capability to support TDD CA and FDDTDD CA operation
- Support Pcell and Scell related configurations
- Support SCell Activation/Deactivation
- Support Non-cross carrier scheduling
- Support Cross carrier scheduling
- Support different SCS between CCs: 15kHz, 30kHz, 60kHz
- LTE in EN-DC: 2CC CA
- LTE in EN-DC: 3CC CA
Reference
Related Posts
- 5G N26 Interface – 5G to 4G Interworking
- Voice over NR Call Flow
- 5G SA Xn Handover Call flow
- 5G SA N2-NGAP Handover Call flow
- 5G EPS Fallback – 5G to 4G Handover