Further, as illustrated by FIGS. 11A-D, a wireless device, such as UE 940, may include an architecture that allows connection to LTE, 5G NR, and/or a combination of LTE and 5G NR (e.g., stand-alone mode for 5G NR). For example, FIG. 11A illustrates UE 940 connected to EPC 902 in an LTE only connection mode. As shown, LTE modem 944 may be connected (e.g., connection 932), via a user plane and control plane, to EPC 902 via connection 1112 with eNB 904 and connection 1110 between eNB 904 and EPC 902. Similarly, as illustrated by FIG. 11B, UE 940 may be connected to 5G core 1004 in a 5G NR only connection mode. As shown, 5G NR modem 946 may be connected (e.g., connection 1134), via a user plane and control plane, to 5G core 1004 via connection 1132 with gNB 906 and connection 1130 between gNB 906 and 5G core 1004. Further, as illustrated by FIG. 11C, UE 940 may be connected to both EPC 902 and 5G core 1004. As shown, LTE modem 944 may be connected (e.g., connection 932), via a user plane and control plane, to EPC 902 via connection 1112 with eNB 904 and connection 1110 between eNB 904 and EPC 902. Additionally, 5G NR modem 946 may be connected (e.g., connection 1134), via a user plane and control plane, to 5G core 1004 via connection 1132 with gNB 906 and connection 1130 between gNB 906 and 5G core 1004.
