ZTE "HSPA + MBMS" Mobile TV Solution – Mobile TV, ZTE, Multimedia – Co
With the big screen the popularity of multi-function mobile phones, mobile data services has been widely applied, it is no longer satisfied with a simple phone line. A variety of high bandwidth multimedia broadcast multicast services emerging on the one hand meet the needs of mobile users a wide range of business, the other mobile operators will also bring in huge revenues. In the mobile communication network for broadcast multicast technology, the development of mobile communications systems has become one of the hotspots. Mobile communication system in order to achieve broadcast multicast technology, third generation mobile communication standards organization 3GPP and 3GPP2, have started research in this area and agreement-making, and the corresponding design goals. This article will introduce WCDMA-based multimedia broadcast multicast service MBMS (MultimediaBroadcastand MulticastService) and ZTE "HSPA + MBMS" feature integration solutions.
1, MBMS network structure Introduction MBMS is a shared network resource from a data source to multiple target data transmission technology is the definition of the Multimedia Broadcast Multicast 3GPPR6 function. One-way multimedia services provision multipoint MBMS technology, sharing of network resources, increase network resources, especially valuable air interface resource.
Order to achieve the MBMS, the need for the existing WCDMA network, SGSN (Serving GPRS SupportNode), GGSN (Gateway GPRS Support Node), RNC (Radio NetworkController) and UE (UserEquipment) and so increase the MBMS node function, and the need to increase radio multicast service center BM-SC (BroadcastMulticast Service Center).
Broadcast Multicast Service Center is a new mobile network functional entity, which is the entrance of the content provider, to authorize and initiate MBMS bearer mobile networks business plan according to schedule MBMS content delivery. Features include: (1) third party content providers authentication, authorization and accounting; (2) to provide MBMS transmission related parameters, such as QoS, multicast broadcast region, to initiate and terminate the MBMS transmission resources; (3) from an external data source to receive and transmit MBMS content, arrangement and inform the user sending MBMS session, the session re-transmission, etc.; (4) business statements, including the media description, session descriptions, such as the multicast service identity, address, delivery time.
MBMS's empty before using the access channel (FACH) carrying MTCH, ground interfaces with existing GTPU tunneling protocol, Gi port data bearing surface were used to flow through the IP business RTP (Real-timeTransportProtocol) and downloads The FLUTE (FileDeliverover UndirectionalTransport), UMTS network is using IP multicast host top business.
On the existing WCDMA / GSM sub-network function entity GGSN, SGSN, RNC / BSC and the UE, also need to increase the MBMS-related functions and processes.
2, MBMS key technical features 1.MBMS is based on the existing mobile network, small changes can be seamlessly integrated with existing mobile networks for operators operating on the mobile TV service provides maximum convenience. MBMS technology is digital TV broadcasting technology with other completely different business model, MBMS provides a complete WCDMA mobile operators by the operation and control of the broadcast / multicast transmission channel.
2.MBMS the smallest unit is the cellular network coverage plot, good integration with location services for different locations provide a rich business.
3.MBMS interaction can provide up to provide the following services: broadcasting; more abundant multicast service; through point to point repair mechanism, to achieve high and reliable downloads; flexible billing; carrying mobile broadcast TV business; rich "PUSH" business. Many businesses have already started operations in the current network, if the MBMS into the network, immediately able to increase the transmission capacity of business revenue.
4.MBMS can achieve a more flexible radio resource scheduling, improve network resource utilization. On the multicast service users from small statistical units to determine the point to point or multipoint MBMS bearer to send the content, or do not send in the district; MBMS can preferredfrequencylayer process, so that in one UE to receive MBMS frequency business.
5.MBMS way coverage of existing cellular network coverage in the same way, through the Cellular for continuous coverage, control of business data through the RNC to send the time in different cellular and ensure synchronization of the cellular business, thus reducing the inter-cellular moving data loss. Honeycomb can be used with the frequency or between different frequency. Diversity techniques can achieve coverage enhanced by repeater, indoor distributed system to achieve the depth of coverage.
3, ZTE "HSPA + MBMS" feature implementations
ZTE to develop in 2002, 3GPP MBMS MBMS specification began when the follow-up study, with the R6/R7MBMS LTEMBMS normative work to improve and advance research ZTE gradually increase the standard of MBMS input. Combining HSDPA / HSUPA / HSPA +, the leader in progress and R & D capabilities, ZTE in MBMS solution elements based on the increase in HSPA, MBMS enhanced business performance, improve customer experience degree.
Based on "HSPA + MBMS" the integration of business operations model shown in Figure 1.
In "HSPA + MBMS" integrated business model, the manner in which the wireless transmission of content providers and users can be transparent. This through a flexible combination of HSPA and MBMS, can maximize the user perceptions, the best use of network resources.
ZTE launched at the end of 2006, including the terminal, including a full set of MBMS demonstration system, single-cell MBMS services can be demonstrated. MBMS commercial system will be launched in the second quarter of 2007, the first stage, all necessary to achieve commercial MBMS function, the fourth quarter of 2007, the second stage, completing the required enhancements.
Using high-capacity IP infrastructure equipment ZTE CN and the RNC, just a software upgrade, you can support the MBMS function. Similarly, the public already has support for high-speed channel capacity, NodeB need only a software upgrade. ZTE will develop and apply in the R4/R5 products accumulated in excellent performance and radio resource management algorithm organically implanted MBMS, MBMS maximize the advantages of mobile operators and end users for the provision of quality services.
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