Content for TR 22.804 Word version: 16.3.0
5 Use cases p. 40
5.1 Rail-bound mass transit p. 40
5.1.1 Description of vertical p. 40
5.1.1.1 Communication services in rail-bound mass transit p. 40
5.1.1.2 Characteristics of main mass-transit data services p. 41
5.1.2 Coexistence of MTTC service and CCTV p. 43
5.1.2.1 Description p. 43
5.1.2.2 Preconditions p. 43
5.1.2.3 Service flows p. 43
5.1.2.4 Post-conditions p. 43
5.1.2.5 Challenges to the 5G system p. 43
5.1.2.6 Potential requirements p. 44
5.1.3 Coexistence of MTTC service and a high data rate service with low priority p. 44
5.1.3.1 Description p. 44
5.1.3.2 Preconditions p. 44
5.1.3.3 Service flows p. 44
5.1.3.4 Post-conditions p. 44
5.1.3.5 Challenges to the 5G system p. 44
5.1.3.6 Potential requirements p. 45
5.1.4 Coexistence of MTTC service and high data rate service with low priority p. 45
5.1.4.1 Description p. 45
5.1.4.2 Preconditions p. 45
5.1.4.3 Service flows p. 45
5.1.4.4 Post-conditions p. 45
5.1.4.5 Challenges to the 5G system p. 45
5.1.4.6 Potential requirements p. 45
5.1.5 Set-up of emergency call p. 46
5.1.5.1 Description p. 46
5.1.5.2 Preconditions p. 46
5.1.5.3 Service flows p. 46
5.1.5.4 Post-conditions p. 46
5.1.5.5 Challenges to the 5G system p. 46
5.1.5.6 Potential requirements p. 46
5.1.6 Emergency call during a sudden rise of CCTV data rate p. 47
5.1.6.1 Description p. 47
5.1.6.2 Preconditions p. 47
5.1.6.3 Service flows p. 47
5.1.6.4 Post-conditions p. 47
5.1.6.6 Potential requirements p. 47
5.1.7 Use Case: CCTV offload / transfer of CCTV archives from commuter train to ground p. 47
5.1.7.1 Description p. 47
5.1.7.2 Pre-conditions p. 48
5.1.7.3 Service flows p. 48
5.1.7.4 Post-conditions p. 48
5.1.7.5 Challenges to the 5G system p. 48
5.1.7.6 Potential requirements and gap analysis p. 49
5.1.8 Wireless communication between mechanically coupled train segments p. 49
5.1.8.1 Description p. 49
5.1.8.2 Preconditions p. 49
5.1.8.3 Service flows p. 49
5.1.8.4 Post-conditions p. 49
5.1.8.5 Challenges to the 5G system p. 49
5.1.8.6 Potential requirements p. 49
5.1.9 Wireless communication between virtually coupled trains p. 50
5.1.9.1 Description p. 50
5.1.9.2 Pre-conditions p. 50
5.1.9.3 Service flows p. 50
5.1.9.4 Post-conditions p. 50
5.1.9.5 Challenges to the 5G system p. 50
5.1.9.6 Potential requirements p. 51
5.1.10 Anticipatory train control p. 51
5.1.10.1 Description p. 51
5.1.10.2 Preconditions p. 51
5.1.10.3 Service flows p. 51
5.1.10.4 Post-conditions p. 52
5.1.10.5 Challenges to the 5G system p. 52
5.1.10.6 Potential requirements p. 52
