Content for TS 24.301 Word version: 18.5.0
6 Elementary procedures for EPS session management
6.1 Overview
6.1.1 General
6.1.2 Types of ESM procedures
6.1.3 ESM sublayer states
6.1.4 Coordination between ESM and SM
6.1.4A Coordination between ESM and 5GSM
6.1.5 Coordination between ESM and EMM for supporting ISR
6.2 IP address allocation
6.2A IP header compression
6.3 General on elementary ESM procedures
6.4 Network initiated ESM procedures
6.4.1 Default EPS bearer context activation procedure
6.4.2 Dedicated EPS bearer context activation procedure
6.4.3 EPS bearer context modification procedure
6.4.4 EPS bearer context deactivation procedure
6.5 UE requested ESM procedures
6.5.0 General
6.5.1 UE requested PDN connectivity procedure
6.5.2 UE requested PDN disconnect procedure
6.5.3 UE requested bearer resource allocation procedure
6.5.4 UE requested bearer resource modification procedure
6.5.5 Handling session management request for UE configured for dual priority
6.6 Miscellaneous procedures
6.6.1 Exchange of protocol configuration options
6.6.2 Notification procedure
6.6.3 Remote UE Report procedure
6.6.4 Transport of user data via the control plane procedure
6.7 Reception of an ESM STATUS message by an ESM entity
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6 Elementary procedures for EPS session management p. 279
6.1 Overview p. 279
6.1.1 General p. 279
6.1.2 Types of ESM procedures p. 280
6.1.3 ESM sublayer states p. 281
6.1.3.1 General p. 281
6.1.3.2 ESM sublayer states in the UE p. 281
6.1.3.2.1 BEARER CONTEXT INACTIVE p. 281
6.1.3.2.2 BEARER CONTEXT ACTIVE p. 281
6.1.3.2.3 PROCEDURE TRANSACTION INACTIVE p. 282
6.1.3.2.4 PROCEDURE TRANSACTION PENDING p. 282
6.1.3.3 ESM sublayer states in the MME p. 282
6.1.3.3.1 BEARER CONTEXT INACTIVE p. 282
6.1.3.3.2 BEARER CONTEXT ACTIVE PENDING p. 282
6.1.3.3.3 BEARER CONTEXT ACTIVE p. 282
6.1.3.3.4 BEARER CONTEXT INACTIVE PENDING p. 282
6.1.3.3.5 BEARER CONTEXT MODIFY PENDING p. 282
6.1.3.3.6 PROCEDURE TRANSACTION INACTIVE p. 283
6.1.3.3.7 PROCEDURE TRANSACTION PENDING p. 283
6.1.4 Coordination between ESM and SM p. 283
6.1.4A Coordination between ESM and 5GSM |R15| p. 284
6.1.5 Coordination between ESM and EMM for supporting ISR p. 284
6.2 IP address allocation p. 285
6.2.1 General p. 285
6.2.2 IP address allocation via NAS signalling p. 285
6.2A IP header compression |R13| p. 287
6.3 General on elementary ESM procedures p. 287
6.3.1 Services provided by lower layers p. 287
6.3.2 Principles of address handling for ESM procedures p. 287
6.3.3 Abnormal cases in the UE p. 289
6.3.4 Abnormal cases in the network p. 290
6.3.5 Handling of APN based congestion control |R10| p. 290
6.3.5A Handling of group specific session management congestion control |R13| p. 291
6.3.6 Handling of network rejection not due to APN based congestion control |R12| p. 291
6.3.7 Handling of WLAN offload control |R12| p. 292
6.3.8 Handling of serving PLMN rate control |R13| p. 292
6.3.9 Handling of APN rate control |R13| p. 292
6.3.10 Handling of 3GPP PS data off |R14| p. 293
6.3.11 Handling of Reliable Data Service |R14| p. 294
6.3.12 Handling of Ethernet PDN type |R16| p. 294
6.3.13 Handling of Uncrewed aerial vehicle identification, authentication, and authorization |R17| p. 294
6.3.13.1 General p. 294
6.3.13.2 Authentication and authorization of UAV p. 294
6.3.13.3 Authorization of C2 communication p. 294
6.3.13.4 Void
6.3.14 Handling of URSP provisioning |R18| p. 295
6.4 Network initiated ESM procedures p. 295
6.4.1 Default EPS bearer context activation procedure p. 295
6.4.1.1 General p. 295
6.4.1.2 Default EPS bearer context activation initiated by the network p. 296
6.4.1.3 Default EPS bearer context activation accepted by the UE p. 296
6.4.1.4 Default EPS bearer context activation not accepted by the UE p. 298
6.4.1.5 Abnormal cases in the UE p. 298
6.4.1.6 Abnormal cases on the network side p. 299
6.4.2 Dedicated EPS bearer context activation procedure p. 299
6.4.2.1 General p. 299
6.4.2.2 Dedicated EPS bearer context activation initiated by the network p. 300
6.4.2.3 Dedicated EPS bearer context activation accepted by the UE p. 300
6.4.2.4 Dedicated EPS bearer context activation not accepted by the UE p. 301
6.4.2.5 Abnormal cases in the UE p. 303
6.4.2.6 Abnormal cases on the network side p. 303
6.4.3 EPS bearer context modification procedure p. 304
6.4.3.1 General p. 304
6.4.3.2 EPS bearer context modification initiated by the network p. 304
6.4.3.3 EPS bearer context modification accepted by the UE p. 305
6.4.3.4 EPS bearer context modification not accepted by the UE p. 307
6.4.3.5 Abnormal cases in the UE p. 310
6.4.3.6 Abnormal cases on the network side p. 310
6.4.4 EPS bearer context deactivation procedure p. 311
6.4.4.1 General p. 311
6.4.4.2 EPS bearer context deactivation initiated by the network p. 311
6.4.4.3 EPS bearer context deactivation accepted by the UE p. 312
6.4.4.4 Abnormal cases in the UE p. 314
6.4.4.5 Abnormal cases on the network side p. 314
6.4.4.6 Local EPS bearer context deactivation without NAS signalling p. 314
6.5 UE requested ESM procedures p. 316
6.5.0 General |R11| p. 316
6.5.1 UE requested PDN connectivity procedure p. 317
6.5.1.1 General p. 317
6.5.1.2 UE requested PDN connectivity procedure initiation p. 318
6.5.1.3 UE requested PDN connectivity procedure accepted by the network p. 321
6.5.1.4 UE requested PDN connectivity procedure not accepted by the network p. 323
6.5.1.4.1 General |R12| p. 323
6.5.1.4.2 Handling of network rejection due to ESM cause #26 |R12| p. 325
6.5.1.4.3 Handling of network rejection due to ESM cause other than ESM cause #26 |R12| p. 328
6.5.1.4A Handling the maximum number of active EPS bearer contexts |R11| p. 334
6.5.1.4B Void
6.5.1.4C Handling the maximum number of active user plane radio bearers in NB-S1 mode |R16| p. 334
6.5.1.5 Abnormal cases in the UE p. 334
6.5.1.6 Abnormal cases on the network side p. 335
6.5.1.7 Handling PDN connectivity request for UE configured for dual priority |R11| p. 336
6.5.2 UE requested PDN disconnect procedure p. 336
6.5.2.1 General p. 336
6.5.2.2 UE requested PDN disconnection procedure initiation p. 337
6.5.2.3 UE requested PDN disconnection procedure accepted by the network p. 337
6.5.2.4 UE requested PDN disconnection procedure not accepted by the network p. 337
6.5.2.5 Abnormal cases in the UE p. 338
6.5.2.6 Abnormal cases on the network side p. 338
6.5.3 UE requested bearer resource allocation procedure p. 339
6.5.3.1 General p. 339
6.5.3.2 UE requested bearer resource allocation procedure initiation p. 339
6.5.3.3 UE requested bearer resource allocation procedure accepted by the network p. 340
6.5.3.4 UE requested bearer resource allocation procedure not accepted by the network p. 340
6.5.3.4.1 General |R12| p. 340
6.5.3.4.2 Handling of network rejection due to ESM cause #26 |R12| p. 342
6.5.3.4.3 Handling of network rejection due to ESM cause other than ESM cause #26 |R12| p. 343
6.5.3.4A Handling the maximum number of active EPS bearer contexts |R11| p. 345
6.5.3.5 Abnormal cases in the UE p. 346
6.5.3.6 Abnormal cases on the network side p. 346
6.5.4 UE requested bearer resource modification procedure p. 346
6.5.4.1 General p. 346
6.5.4.2 UE requested bearer resource modification procedure initiation p. 347
6.5.4.3 UE requested bearer resource modification procedure accepted by the network p. 349
6.5.4.4 UE requested bearer resource modification procedure not accepted by the network p. 350
6.5.4.4.1 General |R12| p. 350
6.5.4.4.2 Handling of network rejection due to ESM cause #26 |R12| p. 353
6.5.4.4.3 Handling of network rejection due to ESM cause other than ESM cause #26 |R12| p. 354
6.5.4.5 Abnormal cases in the UE p. 356
6.5.4.6 Abnormal cases on the network side p. 357
6.5.5 Handling session management request for UE configured for dual priority |R11| p. 357
6.6 Miscellaneous procedures p. 358
6.6.1 Exchange of protocol configuration options p. 358
6.6.1.1 General p. 358
6.6.1.2 ESM information request procedure p. 359
6.6.1.2.1 General p. 359
6.6.1.2.2 ESM information request initiated by the network p. 359
6.6.1.2.3 ESM information request completion by the UE p. 360
6.6.1.2.4 ESM information request completion by the network p. 360
6.6.1.2.5 Abnormal cases in the UE p. 360
6.6.1.2.6 Abnormal cases on the network side p. 360
6.6.1.3 Exchange of protocol configuration options in other messages p. 360
6.6.2 Notification procedure |R9| p. 361
6.6.2.1 General p. 361
6.6.2.2 Notification procedure initiation by the network p. 361
6.6.2.3 Notification procedure in the UE p. 361
6.6.2.4 Abnormal cases on the network side p. 361
6.6.3 Remote UE Report procedure |R13| p. 361
6.6.3.1 General p. 361
6.6.3.2 Remote UE Report initiated by the UE p. 362
6.6.3.3 Remote UE Report completion by the network p. 362
6.6.3.4 Remote UE Report completion by the UE p. 362
6.6.3.5 Abnormal cases in the UE p. 362
6.6.3.6 Abnormal cases on the network side p. 362
6.6.4 Transport of user data via the control plane procedure |R13| p. 363
6.7 Reception of an ESM STATUS message by an ESM entity p. 365
