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d2f3106e4987173630adee044e0dad89 | 23.228 | 5.20.2 Serving‑CSCF
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d2f3106e4987173630adee044e0dad89 | 23.228 | 5.20.2.1 Allocating a GRUU during registration
| The S‑CSCF, when receiving a registration request from a UE that includes an instance id, shall allocate a GRUU set. If the UE indicates support of GRUU in the REGISTER request, then the S‑CSCF shall return the GRUU set in the registration response and associate that GRUU set with the registered contact information for... |
d2f3106e4987173630adee044e0dad89 | 23.228 | 5.20.2.2 Using a GRUU
| The filter criteria in the service profile may check for the presence of a GRUU in the Request URI or related parameters of a request.
For originations, the S‑CSCF shall validate the GRUU conveyed in the contact header of the SIP request and pass the SIP request with the validated GRUU to Application Servers based on ... |
d2f3106e4987173630adee044e0dad89 | 23.228 | 5.20.3 Interrogating‑CSCF
| When routing requests addressed to a GRUU to the terminating S‑CSCF, the I‑CSCF uses the contents of the Request URI when querying the HSS. Requests routed to the terminating S‑CSCF are addressed to the GRUU.
5.20.3a HSS
The HSS shall remove the P‑GRUU as part of the canonicalization process of SIP URIs, to obtain th... |
d2f3106e4987173630adee044e0dad89 | 23.228 | 5.20.4 Elements other than UE acting as a UA
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d2f3106e4987173630adee044e0dad89 | 23.228 | 5.20.4.1 Using a GRUU
| It shall be possible for other IMS elements other than UEs, that act as UAs (e.g. MGCF, Application Server) to use a GRUU referring to itself when inserting a contact address in a SIP message. The MGCF and MRF are not required to store GRUUs beyond a session. If the incoming contact address that is being replaced by th... |
d2f3106e4987173630adee044e0dad89 | 23.228 | 5.20.4.2 Assigning a GRUU
| The GRUUs shall either be provisioned by the operator or obtained by any other mechanism. The GRUU shall remain valid for the time period in which features addressed to this URI remains meaningful.
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d2f3106e4987173630adee044e0dad89 | 23.228 | 5.21 IMS Multimedia Priority Services Procedures
| The IMS Multimedia Priority Service provides Service Users access to IMS services in a prioritised manner.
Based on regional/national requirements and network operator policy, the P-CSCF should handle the IMS registration from an MPS-subscribed UE with priority.
NOTE 1: How the P-CSCF determines that an IMS registrat... |
d2f3106e4987173630adee044e0dad89 | 23.228 | 5.22 Support of Overload Control
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d2f3106e4987173630adee044e0dad89 | 23.228 | 5.22.1 Next-hop monitoring of overload
| The following figure depicts an example information flow for the overload control mechanism based on feedback.
Figure 5.22.1-1: Information flow for Overload Control with next-hop monitoring
1. During a past INVITE, the SIP IMS entity 1 obtained a percentage by which the load forwarded to SIP IMS entity 2 should be... |
d2f3106e4987173630adee044e0dad89 | 23.228 | 5.22.2 Filter based Overload Control
| The following figure depicts an example information flow for the filter based overload control mechanism.
NOTE: The applicability of the filter based overload control mechanism is not restricted to the IMS entities mentioned on this figure.
Figure 5.22.2-1 Information flow for AS Overload Control using a filter bas... |
d2f3106e4987173630adee044e0dad89 | 23.228 | 5 If the P‑CSCF decides to route media to home e.g. due to the need for address translation or due to other reasons, it then allocates resources in IMS AGW and alters the offered SDP accordingly.
| NOTE 1: Per operator policy, the P‑CSCF may have other reasons to route media to the home PLMN.
6. INVITE proceeds from P‑CSCF to S‑CSCF and onwards.
7. 200 OK is received from the far end by the P‑CSCF. If an IMS-AGW was allocated in step 5, the P‑CSCF changes the SDP answer accordingly.
NOTE 2: In step 7a) if the ... |
d2f3106e4987173630adee044e0dad89 | 23.228 | 5 The intermediate replaces the transport address within the connection line in the SDP offer with the address IP3 allocated at its media gateway. If the intermediate supports switching to the transparent media, it also modifies the transparent media information encapsulated in SDP attribute(s) by replacing the encapsu... | 6. eP-CSCF-2 allocates eIMS-AGW2. It compares the transport address in the SDP connection line with the transport address in the transparent media information encapsulated in SDP attribute(s). Because both addresses match, the eP-CSCF-2 takes the transparent media information into consideration. Otherwise it shall igno... |
d2f3106e4987173630adee044e0dad89 | 23.228 | 13 The UE B may need to download the corresponding DC Application signalled in the SDP offer, if not done already and associate it with the requested application DC.
| The UE-B decides from which BDC (if there is more than one BDC) to download the DC application based on application binding information.
14. The DC media negotiation is completed. The UE B returns a 200 OK response with SDP answer for the application data channel.
15. The IMS AS-2 generates a re-INVITE request(s) in... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 1 Scope
| The present document specifies architectural enhancements to the 5G system using NR to support multicast and broadcast communication services, complying to the requirements in TS 22.146 [2], TS 22.246 [3] and TS 22.261 [4]. This document encompasses support for functions such as how to deliver multicast and broadcast c... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 2 References
| The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non‑specific.
- For a specific reference, subsequent revisions do not apply.
-... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 3 Definitions of terms and abbreviations
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 3.1 Terms
| For the purposes of the present document, the terms and definitions defined in TR 21.905 [1] and the following apply:
5GC Individual MBS traffic delivery: 5G CN receives a single copy of MBS data packets and delivers separate copies of those MBS data packets to individual UEs via per-UE PDU sessions, hence for each su... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 3.2 Abbreviations
| For the purposes of the present document, the abbreviations given in TR 21.905 [1], TS 23.501 [5] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905 [1].
AL FEC Application Level FEC
CDN Content Delivery Network
... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 4 General Concept
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 4.1 Overview of multicast and broadcast communication
| Multicast and Broadcast Service (MBS) is a point-to-multipoint service in which data is transmitted from a single source entity to multiple recipients, either to all users in a Broadcast service area, or to users in a multicast group as defined in TS 22.146 [2]. The corresponding types of MBS session are:
- Broadcast ... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 4.2 MB service provisioning
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 4.2.1 Multicast data provisioning
| An example for the sequence of phases for multicast data provisioning is described in the figure below:
Figure 4.2.1-1: Phases of Multicast data provisioning example
The following phases are performed for a specific UE:
- UE Session Join: UE Session Join is the process by which a UE joins an MBS Session, i.e. the ... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 4.2.2 Broadcast data provisioning
| An example for the phases of broadcast data provisioning is described in the figure below:
Figure 4.2.2-1: Phases of Broadcast data provisioning
The following phases are performed for a specific service:
- MBS Session Creation and establishment: MBS Session Creation is used by the AF to create the MBS Session towa... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 4.3 Multicast session state model
| The following illustrate the states for the Multicast MBS session:
- Configured state: Information about the Multicast MBS session (e.g. QoS information) is available in 5GC NFs (e.g. MB-SMF) serving the Multicast MBS session, but no User Plane resources towards NG-RAN are reserved and no MBS data can be transmitted. ... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5 Architecture model
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.1 General architecture
| Figure 5.1-1 depicts the MBS reference architecture. Service-based interfaces are used within the Control Plane. Support for interworking at reference points xMB and MB2 is described in Annex C.
Figure 5.1-1: 5G System architecture for Multicast and Broadcast Service.
NOTE 1: The MBSF is optional and may be colloca... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.2 General architecture for interworking with EPS
| Interworking between MBS and eMBMS at service layer functionality applies in cases where the same Multicast/Broadcast service is provided via eMBMS and MBS. Figure 5.2-1 depicts the system architecture for interworking between E-UTRAN/EPC eMBMS and MBS at service layer, with collocated BM-SC and MBSF/MBSTF functionalit... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3 Service-based interfaces, Reference point and functional entities
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.0 Service-based interfaces
| The 5G System Architecture for MBS contains the following service-based interfaces:
Nmbsmf: Service-based interface exhibited by MB-SMF. Further details are described in clause 9.1.
Npcf: Service-based interface exhibited by PCF. Further details are described in clause 9.2.
Namf: Service-based interface exhibited by... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.1 Reference point
| The 5G System Architecture for MBS contains the following new reference points:
N3mb: Reference point between the RAN and the MB-UPF.
N4mb: Reference point between the MB-SMF and the MB-UPF.
N6mb: Reference point between the MB-UPF and the AF/AS.
N7mb: Reference point between the MB-SMF and the PCF.
N11mb: Referen... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2 Functional entities
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.1 PCF
| In addition to the functions defined in TS 23.501 [5], the PCF performs the following functions to support MBS if dynamic PCC for MBS is needed:
- Supporting QoS handling for MBS Session.
- Providing policy information regarding the MBS Session to MB-SMF for authorizing the related QoS profiles.
- Interacting with U... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.2 MB-SMF
| The MB-SMF performs the following functions to support MBS:
- General for Multicast and Broadcast MBS sessions:
- Supporting MBS session management (including QoS control).
- Configuring the MB-UPF for multicast and broadcast data transport, based on the policy rules for multicast and broadcast services from PCF or ... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.3 SMF
| In addition to the functions defined in TS 23.501 [5], the SMF performs the following functions to support MBS:
- Discovering MB-SMF for a Multicast MBS session.
- Authorizing Multicast MBS session join operation for served UEs if needed.
- Interacting with MB-SMF to obtain multicast Session Context information used... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.4 MB-UPF
| The MB-UPF performs the following functions to support MBS:
- General for Multicast and Broadcast MBS sessions:
- Packet processing of incoming downlink packets for multicast and broadcast flows.
- QoS enforcement (MFBR) based on existing means.
- Interaction with MB-SMF for receiving multicast and broadcast data.
... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.5 UPF
| In addition to the functions defined in TS 23.501 [5], the UPF performs the following functions to support MBS:
- Interacting with SMF for receiving multicast data from MB-UPF for 5GC Individual MBS traffic delivery method.
- Delivering multicast data to UEs via PDU Session for 5GC Individual MBS traffic delivery met... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.6 AMF
| In addition to the functions defined in TS 23.501 [5], the AMF performs the following functions to support MBS:
- Signalling with NG-RAN and MB-SMF for MBS Session management.
- Selection of NG-RANs for notification of multicast session activation toward UEs in CM-IDLE state.
- Selection of NG-RANs for broadcast tra... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.7 NG-RAN
| In addition to the functions defined in TS 23.501 [5], the NG-RAN performs the following functions to support MBS:
- Management of MBS QoS flows via N2.
- Delivery of MBS data packets for multiple UEs over radio using PTM or PTP.
- Configuration of UE for MBS QoS flow reception at AS layer.
- Control switching betw... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.8 UE
| In addition to the functions defined in TS 23.501 [5], the UE may perform the following functions to support MBS:
- Reception of multicast data using PTM/PTP in RRC_CONNECTED state.
- If supported, reception of multicast data using PTM in RRC_INACTIVE state.
- Reception of broadcast data using PTM.
- Handling of in... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.9 AF
| The AF performs the following functions to support MBS:
- Requesting multicast or broadcast service from the 5GC by providing service information including QoS requirement to 5GC.
- Instructing MBS session operation towards 5GC if needed.
- Interacting with NEF for MBS related service exposure.
- Interacting with N... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.10 NEF
| In addition to the functions defined in TS 23.501 [5], the NEF performs the following functions to support MBS:
- Providing an interface to AFs for MBS procedures including service provisioning, MBS session and QoS management.
- Interacting with AF and NFs in 5GC, e.g. MB-SMF for MBS session operations, determination... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.11 MBSF
| The MBSF performs the following functions to support MBS:
- Service level functionality to support MBS, and interworking with LTE MBMS
- Interacting with AF and MB-SMF for MBS session operations, determination of transport parameters, and session transport.
- Selection of MB-SMF to serve an MBS Session.
- Controlli... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.12 MBSTF
| The MBSTF performs the following functions to support MBS if deployed:
- Media anchor for MBS data traffic if needed.
- Sourcing of IP Multicast if needed.
- Generic packet transport functionalities available to any IP multicast enabled application such as framing, multiple flows, packet FEC (encoding).
- Multicast... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.13 UDM
| In addition to the functions defined in TS 23.501 [5], the UDM performs the following functions to support MBS:
- Support management of subscription for authorization for multicast MBS sessions.
- Support management of subscription MBS Assistance Information related to the reception of multicast MBS data in RRC_INACT... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.14 UDR
| In addition to the functions defined in TS 23.501 [5], the UDR performs the following functions to support MBS if deployed:
- Support storage or retrieval of MBS subscription data by the UDM for UE authorization information for multicast MBS sessions and MBS Assistance Information.
- Support storage and retrieval of ... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.15 NRF
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.15.1 General
| In addition to the functions defined in TS 23.501 [5], the NRF performs the following functions to support MBS:
- Support of new NF types MB-SMF and MBSF and their corresponding NF profiles.
- For both multicast and broadcast MBS sessions, support of MB-SMF discovery based on parameters such as DNN, S-NSSAI and MBS s... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 5.3.2.15.2 Extensions to NF profile at NRF
| In addition to the NF profile contents defined in clause 6.2.6.2 of TS 23.501 [5], the NF profile in the NRF contains the following content:
- For MB-SMF, the NF profile may include MB-SMF service area, MBS Session ID(s), Area Session ID(s) and corresponding MBS service area(s) if available.
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6 Functionalities and features
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.1 Authorization to MBS service
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.1.1 AF authorization to the service for multicast and broadcast
| The AF should be authorized by the 5GC for delivering MBS data to the 5GC and/or interacting with the 5GC. For signalling exchange with the 5GC, the NEF perform authorization to the external AF for determination of whether the interaction with the 5GC is allowed or not.
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.1.2 UE authorization to the service for multicast
| The following authorizations are defined:
a) Whether the UE is authorized to use the Multicast service in the PLMN.
b) The authorization for a UE of receiving the content of a specific multicast MBS session.
A Multicast MBS session may be "open to any UEs".
NOTE 1: UE authorization for a specific Multicast MBS sess... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.2 Local MBS service and Location dependent MBS service
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.2.1 General
| A Local MBS service is an MBS service provided in one MBS service area. A location dependent MBS service is an MBS service provided in several MBS service area(s). An MBS service area is identified by a cell list or a tracking area list; for MBS broadcast over NR NTN see also clause 6.21. The MBS service area could be ... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.2.2 Local MBS service
| For a local MBS service, only UEs within the MBS service area may receive content data, while UEs outside the MBS service area are not allowed to receive location specific content. For multicast MBS service, UEs outside the MBS service area are not allowed to join the MBS service, and the network shall not deliver loca... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.2.3 Location dependent MBS service
| A location dependent MBS is identified by MBS Session ID, and provided in several MBS service areas. The location dependent MBS service enables distribution of different content data to different MBS service areas. The same MBS Session ID is used but a different Area Session ID is used for each MBS service area. The Ar... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.2.4 Void
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.2.5 Void
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.3 Mobility support of MBS service
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.3.1 Mobility of Multicast MBS session
| The mobility of multicast MBS service is supported when:
- The UE moves from a NG-RAN node that supports MBS to a target NG-RAN node that supports MBS; or
- The UE moves from a NG-RAN node that supports MBS to a target NG-RAN node that does not support MBS and vice versa.
During the mobility from a NG-RAN node that ... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.3.2 Mobility of Broadcast MBS session
| The UE receives the same Broadcast MBS service in the target NG-RAN if the same MBS session is established with 5GC Shared MBS traffic delivery method in the target NG-RAN node.
NOTE: When the UE moves into NG-RAN node not supporting MBS within the Broadcast MBS service area, how the UE get the same content via applic... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.4 Subscription to multicast services
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.4.1 General
| The UDM stores the MBS subscription information. The MBS subscription data for a UE is included within the UE subscription data.
At any time, the operator may change the subscription for multicast services in the UDM.
The MBS subscription data in UE subscription data contains the following information:
- MBS authori... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.4.2 MBS subscription data in UDM
| The information stored in the UDM as defined in clause 5.2.3.3.1 of TS 23.502 [6] is extended as follows:
- MBS subscription data for a UE as part of UE subscription data, as defined in Table 6.4.2-1, with keys defined in Table 6.4.2-2.
Table 6.4.2-1: MBS subscription data type
Subscription data type
Field
Descrip... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.4.3 MBS information in UDR
| The MBS information may be stored in the UDR by the UDM as part of the subscription data, as defined in clause 5.2.12.2.1 of TS 23.502 [6].
1. MBS data as defined in Tables 6.4.2-1, with keys defined in Table 6.4.3-1.
Table 6.4.3-1: MBS data type keys
Data Set
Data Subset
Data Key
Data Sub Key
Subscription Data
... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.5 Identifiers
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.5.1 MBS Session ID
| The MBS session ID is used to identify a Multicast/Broadcast MBS Session by the 5G system on external interface towards AF and between AF and UE, and towards the UE.
MBS Session ID may have the following types:
- TMGI (for broadcast and multicast MBS sessions);
- source specific IP multicast address (for multicast M... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.5.2 Temporary Mobile Group Identity
| TMGI (Temporary Mobile Group Identity) is defined in TS 23.003 [12] and is used to be able to identify a broadcast MBS Session or a multicast MBS session.
In SNPN (Stand-alone Non-Public Network), TMGI is used together with NID (Network Identifier) defined in TS 23.003 [12] to identify an MBS Session.
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.5.3 Source Specific IP Multicast Address
| The source specific IP multicast address is used to identify an Multicast MBS session and consists of two IP addresses, one is an IP unicast address used as source address in IP packets for identifying the source of the multicast service (e.g. AF/AS), the other is an IP multicast address used as destination address in ... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.5.4 MBS Frequency Selection Area ID
| The MBS Frequency Selection Area (FSA) ID is used for broadcast MBS session to guide the frequency selection of the UE.
MBS FSA ID identifies a preconfigured area within, and in proximity to, which the cell(s) announces the MBS FSA ID and the associating frequency (details see TS 38.300 [9]). MBS FSA ID and their mapp... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.5.5 Associated Session ID
| In the case of network sharing, an Associated Session ID may be used as specified in clause 6.18. When the AF creates multiple broadcast MBS Sessions via different CNs to deliver the same content, it may provide the Associated Session ID which enables the NG-RAN to identify the multiple MBS Sessions delivering the same... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.6 QoS Handling for Multicast and Broadcast services
| For MBS services, the network shall support QoS control per MBS session.
The 5G QoS model and parameters as defined in TS 23.501 [5] clause 5.7 also apply to multicast/broadcast communication services with the following differences:
- Reflective QoS is not applicable;
- Wireline access network specific 5G QoS parame... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.7 User plane management
| The MB-UPF acts as the MBS Session Anchor of an MBS session, and if the MBSTF is involved in the MBS session, then the MBSTF acts as the media anchor of the MBS traffic. The MB-UPF receives only one copy of MBS data packets from AF or MBSTF.
The user plane between MB-UPF and AF, may use either multicast transport or a... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.8 Interworking with MBMS over E-UTRAN for public safety services
| In order to minimize the interruption of services, upon mobility for MBS service from NR/5GC to E-UTRAN/EPC and vice versa, the following applies:
- If the same MBS service is provided via eMBMS in E-UTRAN and MBS, interworking is supported at service layer.
- The UE is always configured with a common TMGI regardless... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.9 MBS Session Context
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.9.1 MBS Session Context
| The MBS Session Context contains all information describing a particular MBS session in the 5GS and is created in each node involved in the delivery of the MBS data.
The content of the Multicast MBS Session Context is described in Table 6.9.1-1.
Table 6.9.1-1: Multicast MBS Session Context
Parameter
Description
NG... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.10 Policy control for Multicast and Broadcast services
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c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.10.1 General
| The policy and charging control framework as defined in TS 23.503 [7] applies to Multicast and Broadcast services in the following aspects:
- MBS Session binding: MBS Session binding is the association of an AF Session information to one and only one MBS Session or a location dependent MBS Session in an MBS Service Ar... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.10.2 MBS Session policy control data in UDR
| The policy control profile information may optionally be provided by the UDR at MBS Session establishment, using Nudr service for Data Set "Policy Data" and Data Subset "MBS Session policy control data", with the source specific multicast address used as MBS session ID or with AF Application identifier as data key is d... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.11 Service Announcement
| Service Announcement provides the UE with descriptions specifying the multicast or broadcast services to be delivered as part of MBS Session.
The Service Announcement may be encoded as defined in TS 26.517 [22] or use application specific formats outside the scope of 3GPP.
Service Announcement information may be deli... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.12 Paging strategy handling
| Compared to the paging strategy handling specified in clause 5.4.3 of TS 23.501 [5], the following additional functionality for multicast MBS service applies:
- At multicast MBS Session Activation, the SMF may provide the most demanding ARP and 5QI of all MBS QoS Flow within the MBS session to the AMF.
- The AMF may ... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.13 MBS Security function
| Security function may be used to protect MBS related signalling/data. Detailed descriptions of security requirements, procedures and handling for 5G Multicast/Broadcast Service (MBS) are provided in TS 33.501 [20].
MBS security function is implemented in the MBSF/MBSTF so that it can be applied only when MBSF/MBSTF ar... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.14 MBS Service Information
| MBS Service Information is a set of information used by the AF to describe an MBS session. It is directly conveyed from the AF to the MB-SMF or indirectly via NEF and/or MBSF.
For a location dependent MBS Session, the same MBS Service Information should be provided by the AF for each MBS Service Area.
In addition, MB... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.15 Group Message Delivery
| Group Message Delivery via MBS Session is a feature that allows an AF to deliver a payload to a group of UEs located in a particular geographical area via a broadcast MBS Session, e.g. for Machine-Type communication. The AF may request to deliver group message and the AF may also request to recall (i.e. cancel) or repl... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.16 Support of MBS data reception for UEs using power saving functions
| MBS provide means to deliver data over MBS Session to multiple UEs at the same time. However, for UEs using power saving functions, e.g. MICO (Mobile Initiated Connection Only) mode with Active Time, or extended DRX (Extended Discontinuous Reception) as defined in clause 5.31.7 of TS 23.501 [5], the UEs are usually unr... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.17 Support of Multicast MBS session data reception in UE with RRC_INACTIVE state
| To provide multicast MBS service to more UEs in a cell, the NG-RAN may decide to move some UE(s) receiving multicast MBS data from RRC_CONNECTED to RRC_INACTIVE state if the UE(s) is capable to receiving MBS data in RRC_INACTIVE state.
The decision in NG-RAN may use the following information provided from 5GC:
- Exis... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.18 Resource sharing across broadcast MBS Sessions during network sharing
| In network sharing scenario as specified in clause 5.18 of TS 23.501 [5], the same MBS broadcast service may be delivered via multiple operators' CN participating in the network sharing to a shared NG-RAN, and the shared NG-RAN nodes may broadcast the MBS data only once for resource efficiency.
When the AF creates mul... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.19 Support of Broadcast MBS Session Intended for NR (e)RedCap UEs
| The NR (e)RedCap UE is a UE with reduced capabilities (NR RedCap UE) or enhanced reduced capabilities (NR eRedCap UE) as defined in TS 38.300 [9]. The NR (e)RedCap UEs can only support limited bandwidth and have lower complexity compared to non-(e)RedCap UEs. In order to allocate the appropriate radio resource as defin... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.20 QoE Measurement Collection Support for MBS
| Quality of Experience (QoE) measurement collection (QMC) may be supported in 5GS as described in clause 5.25.3 of TS 23.501 [5].
QMC may also be supported to measure the QoE related to the reception of MBS multicast and broadcast sessions as specified in clause 21 of TS 38.300 [9],
|
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 6.21 Support of Broadcast MBS Session over NR non-terrestrial networks
| TS 38.300 [9] specifies the additional NG-RAN procedures to support Broadcast MBS Session over NR non-terrestrial network (NTN).
Specifically for NR NTN, an MBS service area in the 5GC may be denoted with an NR NTN Intended Service Area in combination with a TAI list and/or cell ID list, for instance to denote an area... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 7 MBS procedures
| |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 7.1 Common procedure for Multicast and Broadcast
| |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 7.1.1 MBS Session Management
| |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 7.1.1.1 General
| The call flows in clause 7.1.1 and clause 7.3 show a "NEF/MBSF", but as detailed in Annex A, there can be different related network deployment involving either only NEF, or MBSF, or both.
The interactions between "NEF/MBSF" and MB-SMF, PCF, BSF and NRF depicted in the call flows apply for NEF, MBSF or a combined NEF a... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 7.1.1.2 MBS Session Creation without PCC
| This procedure is used by the AF to start the MBS Session towards 5GC and consist of TMGI allocation, and MBS session creation, and they apply to both multicast and broadcast communications unless otherwise stated.
For multicast, MBS session establishment procedure triggered by UE join requests may follow the MBS sess... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 7.1.1.3 MBS Session Creation with PCC
| Deployment of dynamic PCC is optional. This clause describes the procedure when dynamic PCC is deployed.
Figure 7.1.1.3-1: MBS Session Creation with PCC
Steps 1 to 7 are optional and only applicable if TMGI is used as MBS Session ID and required to be pre-allocated.
1 to 9: Same as in Figure 7.1.1.2-1.
10. The NE... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 7.1.1.4 MBS Session Deletion without PCC
| This procedure is used by the AF to delete the MBS Session. This procedure may also include TMGI de-allocation. The procedures apply to both multicast and broadcast communications unless otherwise stated. This procedure releases the reserved resources in both 5GC and NG-RAN.
Figure 7.1.1.4-1: MBS Session Deletion wi... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 7.1.1.5 MBS Session Deletion with PCC
| This procedure is used by the AF to release the MBS Session. This procedure may also include TMGI de-allocation. The procedures apply to both multicast and broadcast communications unless otherwise stated. This procedure releases the reserved resources in both 5GC and NG-RAN.
Figure 7.1.1.5-1: MBS Session Deletion w... |
c00f9f04ddf564fe9fb933d959f62295 | 23.247 | 7.1.1.6 MBS Session Update without PCC
| This procedure is used by the AF to update the MBS service area and/or MBS Service Information. Updating MBS Service Information may lead to addition of new MBS QoS Flow(s), removal of existing MBS QoS Flow(s) or update of existing MBS QoS Flow(s). The procedure applies to both multicast and broadcast communications un... |
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