MBMS White Paper

Motorola’s MBMS Solutions:

An End-to-End perspective

WHITE PAPER

Table of Contents

List of Figures and Tables......................................................................................3

Glossary.................................................................................................................3

References.............................................................................................................3

1 Introduction.......................................................................................................4

2 Market Opportunity and Technology Maturity................................................4

2.1 Market Opportunity.......................................................................................4

2.2 Technology Maturity.......................................................................................5

3 Motorola Product Solutions Based on 3GPP MBMS Architecture...............6

3.1 Broadcast/Multicast Service Centre (BMSC)..............................................7

3.2 Packet Core and Radio Access Network.......................................................8

3.2.1 MBMS Enabled Packet Core.....................................................................9

3.2.2 UMTS Terrestrial Radio Access Network (UTRAN)....................................9

3.3 MBMS Service Provision Modes and Bearer Services .............................10

4 Motorola End to End MBMS Roadmap.........................................................12

4.1 Motorola End to End MBMS System Roadmap .......................................12

4.2 MBMS Phase 1 – Broadcast Mode, Q4 2007..............................................13

4.3 MBMS Phase 2 – Broadcast Mode (Enhancement), Q2 2008 ..................14

4.4 MBMS Phase 3 – Multicast Mode, Q2 2009..............................................15

5 Conclusion.......................................................................................................15

List of Figures and Tables

Figure 1 MBMS Network Reference Architecture................................................................................................6Figure 2 Simplified View of Motorola MBMS System with Topology and Network Layers...................................7Figure 3 BMSC Functional Architecture................................................................................................................7Figure 4 Physical Architecture of Motorola BMSC................................................................................................8Figure 5 MBMS Bearer Service vs Logical Contexts in an E2E UMTS System..................................................12Figure 6 Motorola E2E MBMS Product Solution Roadmap.................................................................................12Figure 7 Incremental MBMS broadcast service capability offered in phases......................................................13

Table 1 MBMS Services and Potential Applications..............................................................................................4Table 2 Broadcast Technology vs. Air Interface......................................................................................................5Table 3 MBMS Enabling Functions in Packet Core................................................................................................9Table 4 MBMS Enabling Functions in UTRAN ......................................................................................................9Table 5 MBMS Broadcast Mode vs Multicast Mode...........................................................................................10

BMSC

DVB-H

MBMS

NRT

PTP

PTM

RB

SMS-CB

TPF

3 wHITE PAPER : Motorola’s MBMS Solutions : An End-to-End perspective

Broadcast and Multicast Service Centre

Digital Video Broadcasting – Handheld

Multimedia Broadcast/Multicast Service

Near Real Time

Point to Point

Point to Multiple Point

Radio Bearer

Short Message Service - Cell Broadcast

Traffic Plane Function

References

[1] 3GPP TS 22.146 – Multimedia Broadcast/Multicast Service (MBMS); Stage 1[2] 3GPP TS 22.246 - Multimedia Broadcast/Multicast Service (MBMS) user services; Stage 1[3] 3GPP TS 23.246 - Multimedia Broadcast/Multicast Service (MBMS); Architecture and functional description[4] 3GPP TS 25.346 - Introduction of Multimedia Broadcast Multicast Service (MBMS) in the RAN[5] 3GPP TS 25.992 - MBMS UTRAN/GERAN Requirements [6] 3GPP TR 25.803 - S-CCPCH Performance for MBMS [7] 3GPP TS 25.433 - UTRAN Iub Interface NBAP Signaling [8] 3GPP TS 25.413 - UTRAN Iu Interface RANAP Signaling [9] 3GPP TS 25.331 - RRC Protocol Specification[10] 3GPP TS 26.346 - Multimedia Broadcast/Multicast Service (MBMS); Protocols and Codecs[11] Motorola Current Roadmap - http://my.mot.com/go/gsmroadmap

Glossary

1 Introduction

Multimedia Broadcast/Multicast Service (MBMS) is a unidirectional point to multipoint bearer service over cellular networks, where multimedia data (e.g. text, audio, picture, video) is transmitted from a single source entity to a group of users in a specific area. Broadcast/multicast services are becoming increasingly important as an economic driver for mobile data services, allowing the service provider to efficiently and economically deliver multimedia information to larger populations of users without requiring disproportionate amount of network resources. The MBMS architecture defined by 3GPP standards enables the efficient usage of radio access network and core network resources, with an emphasis on radio interface efficiency. MBMS is a solu-tion that offers: • Reduced cost per bit delivered for broadcast/multicast multimedia services • Assured QoS for multimedia streaming services • Ability of serving large groups simultaneously with multimedia content.

2 Market Opportunity and Technology Maturity

2.1 Market Opportunitywith the deployment of UMTS/HSxPA, service providers are increasingly interested in offering 3G multimedia services such as mobile TV to retain their subscribers and withstand the challenges from wireline competi-tors. The demand for Mobile TV is already evident in many countries worldwide. It is estimated that globally, there will be some 250 million mobile TV/video users by 2011, generating revenue of some €10.5 billion ($14 billion); according to the June-2007 report by UNSTRUNG. Potential MBMS applications include not only cel-lular band broadcast mobile television; but also cellular band broadcast mobile radio and area-specific target mobile advertising, etc. These data applications can be treated as streaming or background traffic in UMTS systems as shown in Table 1 (below).

Table 1 MBMS Services and Potential Applications


QoS Class

Streaming

Background

Services

NRT multimedia contents:Video streams Audio streams Timed text(e.g., scrolling or crawling text)

Broadcast/Multicast File delivery:Video files Audio files Software

Example Applications

Live sporting events Live newscasts Live traffic information (traffic cameras, traffic reports) Entertainment re-broadcasts(e.g., TV shows, long-duration features) Music (audio-only programming, “radio”) Traffic or news text Tourist information(e.g., special events, ticket availability) Advertising

Sports highlights News highlights Music videos Music (audio files) Movie trailers Entertainment (e.g., short video features, serialized episodes, long-duration features) Games Tourist information(e.g., sites of interest, local history) Advertising

2.2 Technology Maturity

3G Networks currently use dedicated channels for Mobile TV. However, profitability is often restricted by limited 3G network capacity for dedicated streaming video and the limited simultaneous number of subscrib-ers that can use the service (e.g. fewer than 10 users per cell). To meet the ever increasing potential market interests, a number of the broadcast technologies such as MBMS, DVB-H, MediaFLO, have been proposed to deliver mobile TV for cellular users. These technologies and their standards status are summarized in Table 2


Technology

Standard

Regions

Air Interface

MBMS

Open

Global

EDGE/GPRS, w-CDMA

(8PSK, QPSK)

DVB-IP

wholesale

Europe

CDMA/DO (QPSK, 8PSK,

16-QAM)

DVB-H

Open/Spectrum Limited

Europe, others

OFDM (QPSK, 16-QAM, 64-

QAM)

ISDB-T

Open

Japan

OFDM (DQPSK, QPSK, 16-

QAM, 64-QAM)

MediaFLO

Proprietary

US

OFDM (QPSK, 16-QAM, Lay-ered modula-

tion)

T-DMB

Open

Korea

OFDM (QPSK)

In the table above, DVB-H and MBMS represent the two main globally accepted technologies. DVB-H is con-sidered a long term solution due to a number of issues that exist, which include: • High-cost to build dedicated DVB-H networks • Lack of EU spectrum for DVB-H until 2010-2012 timeframe • 3G Service providers must acquire new spectrum or partner with others in order to deploy DVB-H • No Global DVB-H spectrum allocation, therefore, many regional variants and limited by roaming issues • Higher handset costs since DVB-H handsets require new receiver and related economies of scale with new technologies • Indoor coverage issues yet to be addressed.

On the other hand, MBMS can serve as an immediate solution for 3G service providers. MBMS architecture enables the efficient usage of radio-network and core-network resources with an emphasis on radio interface efficiency. As a result, MBMS offers the following benefits: • Low cost solution since no new transmission equipment is required • Uses existing 3G spectrum, therefore, it is ready for deployment immediately • Lower handset costs since no new receiver is required for MBMS broadcast reception • Same footprint as 3G, requires no new dedicated sites • Draws on lessons already learned in respect of UMTS deployments. Most 3G service providers could quite easily build their Mobile TV market with MBMS to address the immedi-ate needs. Since service take up is likely to be a gradual process, MBMS will offer an increased ARPU at a minimum cost and at the same time reduce subscribers churn. Service providers can take advantage of their existing 3G infrastructure to offer multimedia services over MBMS and evolve to DVB-H to offer increased TV program choices if demand necessitates at a later stage.

Table 2 Broadcast Technology vs. Air Interface

3 Motorola Product Solutions Based on 3GPP MBMS Architecture

MBMS is a point-to-multipoint (PTM) and point-to-point (PTP) service where the data is transmitted from a single source entity to multiple recipients (end users). MBMS is realized within the 3GPP architecture by add-ing a number of new interfaces and functional entity as well as a number of new capabilities to the existing functional entities. The MBMS specifications ensure the third-party contents are delivered efficiently, securely and reliably to the authorized user equipment (UE) over the 3G network. As shown in Figure 1 below, the exist-ing PS Domain functional entities (GGSN, SGSN, UTRAN and UE) are enhanced to provide the MBMS Bearer Service. However, a new functional entity, the Broadcast Multicast Service Centre (BMSC) is introduced to provide a set of functions for MBMS User Services. BMSC functions for different MBMS User Services may be supported from the same or different physical network elements.


UE SGSN

UE GERAN

UTRAN

HLR

GGSNTPF BMSC

BMSC

MulticastBroadcast

Source

ContentProvider

Uu Iu

Iu/GbUm

Gr

Gn/GpGi

PDN(e.g. Internet)

Other PLMN

Gmb

Gi Mz

MulticastBroadcast

Source

ContentProvider

Gmb for Signalling

Gi for Data

UE SGSN

UE GERAN

UTRAN

HLR

GGSNTPF BMSC

BMSC

MulticastBroadcast

Source

ContentProvider

MulticastBroadcast

Source

ContentProvider

Uu Iu

Iu/GbUm

Gr

Gn/GpGi

PDN(e.g. Internet)

Other PLMN

Gmb

Gi Mz

MulticastBroadcast

Source

ContentProvider

MulticastBroadcast

Source

ContentProvider

Gmb for Signalling

Gi for Data

Figure 1 MBMS Network Reference ArchitectureAn example of Motorola’s MBMS system topology and network layers are shown in Figure 2

Figure 2 Simplified View of Motorola’s MBMS System with Topology and Network Layers

In the following sections, the MBMS key functional entities and Motorola product solutions in providing the MBMS enabling functions are discussed.

Gb


Membership Function

Session and Transmission Function Proxy and

Transport Function

Service Announcement function

To GGSN

To UE

BM - SC

Gmb

Gi

WAP, http, MMS, …

Gmb Gmb

Gi

Gi

Content Provider / Multicast Broadcast

Source

Gi Security Function

To UE Gi http, MIKEY/UDP, ...

3.1 Broadcast/Multicast Service Centre (BMSC)

Figure 3 BMSC Functional ArchitectureBMSC is a new network component added to provide a number of MBMS specific functions.

Figure 3 above shows the BMSC functional architecture. To offer MBMS services, the BMSC performs the following five major functions:

1. Security: Integrity and/or confidentiality protection of MBMS data; distributing MBMS keys (Key Distribution Function) to authorized UEs

2. Session and Transmission: Provides session scheduling, session Identifier, allocates TMGI and transport as-sociated parameters (QoS and Service Area); initiates and terminates MBMS bearer resources; sends MBMS data; authenticates and authorizes external sources

3. Service Announcement: Provides media and service description towards UEs, initiates service announce-ments via PUSH/URL/SMS/SMS-CB etc.

4. Proxy and Transport: Proxy Agent for signaling over Gmb reference point; generates charging records for the content provider: the BMSC Proxy and Transport Function also handles instances when the BMSC functions for different MBMS services are provided by multiple physical network elements. Routing of the different signaling interactions is transparent to the GGSN

5. Membership: Provides Authorization, subscription data and generates charging records. In addition, all signaling or control-plane functions between the BMSC and the GGSN are at the Gmb reference point; and all data or bearer-plane functions are at the Gi reference point. The BMSC physical architecture is shown in Figure 4.

BMSC


Figure 4 Physical Architecture of Motorola BMSC

3.2 Packet Core and Radio Access Network

There is no additional hardware impact to Motorola’s existing products in either the Core Network (USP prod-ucts) or the Radio Access Network (USR products) although they are enhanced to support the MBMS bearer service. The objective of these enhancements is to deliver IP broadcast/multimedia contents with a specified quality of service to multiple receivers using a minimum of network and radio resource.


3.2.1 MBMS Enabled Packet Core

To support MBMS services, Motorola’s Packet Core products are upgraded with a number of new functions as listed in Table 3 below.

Node

GGSN

SGSN

New functions added for MBMS support

As an entry point of IP multicast service, initiate MBMS bearer context establishment and release by BMSC’s notification;Route the received MBMS data flow to the proper GTP tunnelsScreening of MBMS multicast source message from external PLMNG-MB-CDR generationFlow Based Charging

MBMS Bearer service control on User unit. Receiving MBMS data from GGSN, and forward to UTRAN/GERANSupporting Intra-SGSN/Inter-SGSN mobility. Storing and forwarding MBMS UE con-text. Notify MBMS UE context status to UES-MB-CDR generationSetup and release Iu/Gn bearer for MBMS service

3.2.2 UMTS Terrestrial Radio Access Network (UTRAN)

To support MBMS services, Motorola’s UTRAN products are upgraded with a number of new functions, which are introduced in phases. The MBMS Enabling Functions in UTRAN are summarized in Table 4 below.

Table 4 MBMS Enabling Functions in UTRAN

New added function for MBMS support

To efficiently deliver MBMS data to the designated MBMS service areaTo support the initiation and termination of transmissionsTo support UE mobilityTo transmit MBMS service announcementsTo support other UE services at the same time (voice calls, SMS, etc.)Transmission sharing for FACH in one Node B with same MBMS broadcast data, provid-ing Iub interface transmission savingOne cell can support 4 x 256kbps, or 8 x 128kbps, or 8 x 64kbps TV channels

Enhanced MBMS Broadcast introduces a number of CRs in 3GPP Rel.6 in order to enhance the performance of the MBMS Broadcast.It has clear benefits over MBMS Broadcast for scheduled broadcast-type Mobile TV(enhanced MBMS specifications, MBMS cell re-selection/ update/ handover, count-ing and call Notification, mixed service, Iub link sharing for MBMS and MBMS over Iur).One cell can support 7x256kbps, or 14x128kbps, or 16x64kbps TV channels

To deliver MBMS data to all interested users within a requested service area and with a requested QoS. Supports the decision of using PTP or PTM RB in every cell before the session and dur-ing the session.Uses power controlSetting user thresholdsSupport selective combing or soft combining. In order to get better interleaving performance, the TTI of the FACH, used to bear MTCH, is 40ms or 80ms. The 40ms TTI is used for 256k bearers due to a UE capability limitation. 80ms would be used for all other bearers to maximize time diversity gain.

Mode

Phase 1Broadcast

Phase 2Enhanced Broadcast

Phase 3Multicast

Table 3 MBMS Enabling Functions in Packet Core

3.3 MBMS Service Provision Modes and Bearer Services

MBMS as a unidirectional point to multipoint bearer service, in which data is transmitted from a single source entity to a group of users located in a specific area. This results in a significant saving in signaling bandwidth, which allows network resources to be shared more efficiently. The MBMS bearer service offers two modes:

• Broadcast Mode• Multicast Mode.

In broadcast mode, the broadcast service involves unidirectional point-to-point and point-to-multipoint transmission of multimedia data (e.g. text, audio, picture, video) from a single source entity to all users in a broadcast service area. The broadcast service is initiated from the BMSC, there are therefore no specific requirements to activate the MBMS broadcast service. End-users can subscribe to MBMS services through a portal or service provider’s counter (or via other mechanisms); MBMS supports both monthly and daily charging mechanisms. The broadcasted service, when used as advertising, is free to end-users; a charge is levied against the content provider instead.

In multicast mode, the multicast service is a unidirectional point-to-multipoint service in which data is transmitted from a single source to a multicast group in a multicast area; this is usually triggered by the end-users. The multicast service generally requires a subscription to the multicast subscription group and then end-user joining the group; therefore, charges can be made to the end-users and content providers. The detailed comparisons for the broadcast and multicast modes are summarized in Table 5 below.

Table 5 MBMS Broadcast Mode versus Multicast Mode


Broadcast Mode

within Home PLMN

Yes

No

Supports monthly and daily charging mecha-nisms. Users can subscribe to MBMS services through a portal or service provider’s counter (or via other mechanisms).

Motorola’s Enhanced Broadcast feature allows intelligent radio resource management

The Distribution tree is defined within BMSC, Any location change of UE will not affect the dis-tribution tree.

BMSC always maintains a default distribution list of downstream node (GGSN), which determines the broadcast service area for each session. The list will be sent to the GGSN via a “Session start request” message.

while receiving “MBMS session start req.” mes-sage, an MBMS bearer context is established lo-cally and corresponding resource is allocated in the user plane; the Bearer ID (E.g. TEID) is up-dated to the node in the uplink.

while receiving “MBMS session stop Req.” mes-sage, MBMS Bearer context and corresponding resource in the user plane will be released from each node.

MBMS Service Mode

Service Area

Receivable during Roaming

Service Registration required

Charging model

Resource efficiency

Distribution Tree

Downlink Data Routing

MBMS Bearer Registration

MBMS Bearer De-registration

Multicast Mode

within Home PLMN

Yes

Yes

Both end user and Content provider

Dynamic resource reallocation according to the actual user numbers, e.g. PTP or PTM

Distribution tree is defined by the interested UEs, any loca-tion changes of the UE may change the distribution tree.

A distribution tree will be setup through the MBMS UE con-text activation procedure; upstream nodes only send data to the joined nodes in the downlink.

During the MBMS UE context activation procedure, if node in the downlink discovers that there is no MBMS Bearer context does exist with the upstream node, it triggers a Registration procedure to set up an MBMS Bearer Context accordingly. Only after a session start request is received, is resource allocated in the user plane.

when a Session stop occurs, the resource that is allocated to the MBMS Bearer context in the user plane will be re-leased. when the last UE is leaving for that MBMS Bearer Context, a de-registration procedure will be initiated and the information will be deleted from the downstream node of distribution list in the uplink node.


To facilitate MBMS service, in addition to the PDP context, the UMTS PS domain network elements will estab-lish and maintain a logical bearer in the form of the MBMS bearer context between the BMSC and UMTS net-works and the end-users. A PDP context is required before transferring MBMS signaling messages. MBMS UE context is associated with PDP context by linked NSAPI (in joining message). MBMS Bearer context is setup while MBMS session start in broadcast mode or the first MBMS UE context setup triggered in multicast mode. Finally, MBMS Service Bearer is introduced in to the UTRAN to support MBMS. These logical bearers are highlighted in Figure 5 below, which are supported in Motorola’s E2E infrastructure products.

Maintained node

User or Network Initiated

Broadcast or Multicast

Charging required

PDP Context

SGSN, GGSN

User

-

SGSN and GGSN

MBMS UE Context

RNC, SGSN, GGSN, BMSC

User

Multicast only

BMSC only

MBMS Bearer Context

RNC, SGSN, GGSN, BMSC

Network

Both Broadcast and Multicast

SGSN, GGSN and BMSC

Figure 5 MBMS Bearer Service vs. Logical Contexts in an E2E UMTS System

4 Motorola’s End to End MBMS Roadmap

Motorola offers the MBMS features in different phases in order to give service providers flexibility when intro-ducing MBMS service in different deployment scenarios. The MBMS feature is an optional feature introduced in Motorola’s UMTS System Release 6 (USR6+USP4).Please note that the dates for the following phases are guided by the current forecast for MBMS capable handset and device availability. Motorola’s infrastructure will align with the availability of MBMS capable hand-sets and devices should these forecast dates change.

4.1 Motorola End to End MBMS System Roadmap

Figure 6 is a summary of Motorola’s current E2E UMTS Product Phased Timeline in support of MBMS deploy-ment, including BMSC, Packet Core (USP) and the UTRAN (USR) releases in three major phases, i.e. broadcast mode in Q4 2007, enhanced broadcast mode in Q2 2008 and multicast mode in Q2 2009.

At a system level, Motorola’s E2E MBMS solutions offer the following system capacity and scalability:• Up to 10 Million Registered Subscribers and Up to 128 MBMS services with up to 32 distributed GGSNs for a single MBMS service can be supported per BMSC• Up to 8 BMSCs can be connected per GGSN• Up to 1024 broadcast channels supported per single module (SPU) in GGSN• Up to 4 SGSN can be supported per broadcast channel in GGSN• Support up to 256 simultaneous MBMS Bearer contexts per SGSN on broadcast mode, maximum DL throughput per MBMS bearer is 384kbps.


Figure 6 Motorola’s E2E MBMS Solutions Roadmap

In broadcast mode, the incremental MBMS broadcast service capabilities are introduced in each phase, which are highlighted in Figure 7 below.

Figure 7 Incremental MBMS broadcast service capability offered in phases


4.2 MBMS Phase 1 – Broadcast Mode, Q4 2007

In broadcast mode, MBMS broadcast content can differ in cell, region, city etc. It is relatively cheap to imple-ment and therefore is ideal for free or low tariff charging and brand enhancement strategies.

Motorola’s phase I broadcast solution consists of UTRAN USR6.1, Packet Core USP4.1 and Release 1 BMSC, offering the following functions:

• Static PTM (point to multipoint): This is a simple broadcast only mode. In this mode, a common channel FACH is mapped to S-CCPCH and is configured and transmits continuously• If multiple cells in a Node B are supporting the same MBMS service on S-CCPCH, one FACH can be used to transport the service on the Iub to serve all cells (option)• Algorithms for Power handling, admission, load control, congestion control, multiplexing services for optimized performance and spectral efficiency• Broadcast service keys may be provided if the service is charged• The SGSN will support MBMS session Start and Stop to all connected RNCs• Generate MB-CDR per MBMS bearer context • Support of monthly and daily charging mechanism. End-users can subscribe to the MBMS services through portal or service provider’s counter (or via other service provider specified mechanisms).

In this phase, the system can achieve the following radio capacity:

• Service Capacity per cell: 8 x 64kbps or 4 x 128kbps or 4 x 256kbps services• Number of different services per RNC: 128 x 64kbps, or 64 x 128kbps, or 32 x 256kbps

4.3 MBMS Phase 2 – Broadcast Mode (Enhancement), Q2 2008

Motorola’s MBMS broadcast mode (enhancement) solution is 3GPP Rel.6 compliant to enhance the perfor-mance of the MBMS Broadcast, including MBMS cell re-selection/ update/ handover, counting and call Notifi-cation, mixed service, Iub link sharing for MBMS and MBMS over Iur etc.

Motorola’s MBMS Phase 2 solution will be introduced through UTRAN USR7.0, Packet Core USP5.0, and BMSC Release 2&3. For a complete list of detailed USR7.0/USP5.0 feature offerings, please refer to Motoro-la’s current roadmap document. It is a fully standardized solution making it fully interoperable with other Core, UTRAN or terminals with the extra benefits of:

• Easy handling in BMSC• Faster channel activation and switching times• Radio resource efficient• Simpler to implement from an end-to-end point of view.

The key features of enhancement in this phase include:

1. Enhanced Broadcast mode (PTM)

A straightforward enhancement to the Phase I broadcast method. This mode of operation is meant to be op-erable with low complexity. If spectrum efficiency is a major concern, Motorola recommends the use of the dynamic mode (see 2 below). The latter provides a significant number of configurable parameters and includes the ability to set a “number of users” threshold when PTP or PTM mode is used. Enhanced Broadcast details include:

• If there is more than one user in the cell wanting the service, the service is provided in PTM mode• Even if there are no users in the cell, the service is broadcast if users in one or more neighboring cells could benefit (from soft/selective combining)• Transmission with no in-cell users is only considered if cell load is not too high.

2. Dynamic Broadcast mode (PTM and PTP)• The RNC chooses PTM or PTP for a service on a per cell basis based on number of users, status of neigh boring cells and cell congestion status• 3GPP counting mechanism used to determine number of MBMS users in IDLE state and avoids all users responding at the same time• Sophisticated load control/congestion-mitigating mechanisms• when switching between PTM and PTP, the new connection(s) is/are made before dropping the old (when possible), to minimize impact on the end-user

• As for enhanced broadcast mode, avoids transmission when there is no need• There is no longer a need to support a permanent signaling connection across the Iu for each MBMS PTP connection in RRC connected mode. After the session starts the SGSN can release the Iu signaling con- nections• Provision to set a “number of users” threshold to define when PTP or PTM is used.

3. Static point to point (PTP), where services are provided on DCH or HS-DSCH (dedicated channels on a per UE basis). (Note that mapping to HS-DSCH is also possible using the dynamic broadcast mode).

Other system performance and radio capacity features include:

• PTM/PTP decision mechanisms • Multi-RAB support (MBMS + non-MBMS) • MBMS over Iur • The SGSN will support MBMS Session start and stop messages to all RNCs where there are known UEs requesting service• Generate MB-CDR per MBMS bearer context • Support of monthly, weekly and daily charging mechanism. Users can subscribe to the MBMS services through portal or service provider’s counter (or via other mechanisms).

In this phase, the system can achieve the following radio capacity:

• Service capacity per cell: 16 x 64kbps or 14 x 128kbps or 7 x 256kbps services

4.4 MBMS Phase 3 – Multicast Mode, Q2 2009

In MBMS multicast service mode, the content is delivered only within those cells where the subscribed ser-vice end-users are located. This service could provide richer and even more customized content to end-users and supports multiple charging methods; therefore, it is especially suitable for pay-per-view and pay-per-pro-gram tariffs.

Motorola MBMS Phase 3 solution is offered by UTRAN USR8.0, Packet Core USP6.0, and BMSC Release 4 (proposed release). For a complete list of detailed USR8.0/USP6.0 feature offerings, please refer to Motorola’s current roadmap document. In the MBMS multicast, MBMS data is delivered to all interested end-users within a requested service area and with a requested QoS. Interested end-users have to register with the MBMS service to receive data and will be authenticated based on a subscription. The radio resources are used only in cells with registered end-users. End-users can be charged for the MBMS services using different tariff models. Unauthorized reception is prevented. To allow MBMS end-user groups, subscription options, end-user authentication, Motorola MBMS Phase 3 solution supports:

• The decision of using PTP or PTM RB in every cell before the session and during the session.• Uses power control• Setting user thresholds• Support selective combining or soft combining• In order to get better interleaving performance, the TTI of FACH used to bear MTCH is 40ms or 80ms. 40msTTI is used for 256k bearers due to a UE capability limitation. 80ms will be used for all other bearers to maximize time diversity gain• The SGSN will support MBMS Session start and stop messages to all RNCs where there is at least one UE in each known Multicast group• BMSC bills the content provider for broadcast mode• Generate MB-CDR per MBMS bearer context• Ability to monitor the most popular programs and user behavior. The BMSC is aware of when the end users joins a MBMS broadcast channel and when the end users leave a MBMS broadcast channel.

5 Conclusion

In order to remain competitive and leverage their investment, service providers must ensure that the service provisioning platform selected is scalable and can be migrated through standards compliant architecture to build a subscriber base for future and more profitable services. with the E2E solutions to support customized and well marketed multimedia applications, Motorola’s phased MBMS solutions will assist with the immedi-ate need for revenue generation. Motorola’s end-to-end MBMS solutions employ standards-based architec-tures, technologies, interfaces, protocols, intelligent radio resource management and mechanisms for privacy and access control as well as competitive capacity and flexible configuration design. Motorola can provide everything service providers need to bring wireless data services to market quickly and profitably; MBMS is an example of our market leading solutions.14 wHITE PAPER : Motorola’s MBMS Solutions : An End-to-End perspective

Motorola, Inc. www.motorola.com /networkservice providers

The information presented herein is to the best of our knowledge true and accurate. No warranty or guarantee expressed or implied is made regarding the capacity, performance or suitability of any product. MOTOROLA and the Stylized M Logo are registered in the U.S. Patent and Trademark Office. All other product or service names are the property of their respective owners. © Motorola, Inc. 2007

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