Section: 6.15.2 Requirements
Content: The 5G access network shall support an energy saving mode with the following characteristics: - the energy saving mode can be activated/deactivated either manually or automatically; - service can be restricted to a group of users (e.g. public safety user, emergency callers). NOTE: When in energy saving mode the UE's and Access transmit power may be reduced or turned off (deep sleep mode), end-to-end latency and jitter may be increased with no impact on set of users or applications still allowed. The 5G system shall support mechanisms to improve battery life for a UE over what is possible in EPS. The 5G system shall optimize the battery consumption of a relay UE via which a UE is in indirect network connection mode. The 5G system shall support UEs using small rechargeable and single coin cell batteries (e.g. considering impact on maximum pulse and continuous current).