T-Mobile High-Speed Internet Gateway Operator
Manual
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Issue: DRAFT Nokia 3TG-01275-AAAA-TCZZA 29
4.2 4G/LTE and 5G radio support
The T-Mobile High-Speed Internet Gateway is designed to operate according to the
5G NSA 3GPP Rel-15 December-2018 and 3GPP Release 15 December 5G NR,
NSA 3X, 3A and SA 2 standards. It can operate in LTE-only mode or 5G EN-DC
mode.
When operating in LTE-only mode, the T-Mobile High-Speed Internet Gateway will
only use the 4G/LTE network to connect to the operator's network.
When operating in LTE-5G EN-DC mode, the T-Mobile High-Speed Internet
Gateway implements the 5G NSA (Option 3x) configuration, meaning it uses a
4G/LTE carrier and 5G NSA carrier at the same time to connect to the operator's
network. The control plane is carried over the LTE network and the user plane is
carried over both the LTE and 5G NSA networks.
The T-Mobile High-Speed Internet Gateway supports two APN with default bearer. It
also supports dedicated bearers and QoS.
4.3 4G and 5G band and antenna support
The T-Mobile High-Speed Internet Gateway supports the following 4G/LTE radio
bands:
• LTE FDD bands supported: B2, B4, B12, B71, B66, B5, B25, B26
• LTE TDD bands supported: B41, B46 LAA, B48
• DL 256 QAM with CA and 4x4 MIMO: supported 2CA, 3CA, 4CA, 5CA in down link
• UL 256 QAM on 5G UL, 2x2MIMO
• supports channel bandwidths: 5MHz, 10MHz, 15MHz, 20MHz
• 5G NR FDD bands supported: n2, n25, n66, and n71
• 5G NR TDD bands supported: n41
Note — In accordance with the NSA standard, means that a 4G
connection is mandatory for the T-Mobile High-Speed Internet
Gateway to reach the 5G network.
Note — There are two Access Points pre-configured for the
T-Mobile High-Speed Internet Gateway: One for Internet and
OAM traffic, one for voice traffic (VoLTE).
• Internet and OAM traffic, which can be edited by a
superadmin, but cannot be deleted.
• Voice Traffic (VoLTE), which can be edited and deleted by
the superadmin user. See procedure 22 for the procedure to
remove an Access Point.
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