DVB-H IP Encapsulator DVE 6000

Product Highlights

IP Encapsulator Functional Diagram:

• Fully Compliant with DVB-H Standards
• Reed Solomon Encoding - user specified
• Accurate time slicing control
• Two independent operational modes: "Dynamic" and "Slotted Allocation" burst scheduling
• Dynamic burst scheduling maximizes bandwidth utilization
• Easy integration into an SFN network
• Loss free handover using SFN
• Input stream support for IPv4, IPv6
• Supports constant and variable IP sources
• SI/PSI table generation (PAT, PMT, INT, NIT, SDT, EIT, TDT, TOT)
• MIP insertion
• Accurate Bit rate generation, based on the Modulator settings
• Web GUI, SNMP and CLI control interfaces
• Up to 32 Mbps throughput covering all possible DVB-H modes
• Net Manager Application for managing group of encapsulators
• Packet filtering based on IP Addresses and ports
• Transport stream recording and playback
• Compliance
  ETSI EN 301 192
  ETSI EN 300 468
  ETSI EN 300 744
  ETSI TS 101 191
  ISO/IEC 13818-1
  ISO/IEC 13818-6
  

DVE 6000 Advantages over competing products

• Two operational modes: dynamic time-slice allocation and static allocation
• SFN adapter, part of the encapsulator
• Automatic SI/PSI table generation
• Transport stream player and recorder
• Packet filtering
• Single compact unit

Product Description

The DVE 6000 encapsulator is a fully DVB-H standard compliant device designed to cover all possible DVB-H modes. The encapsulator processes registered IP traffic, called services, into DVB-H compliant MPEG-2 ASI stream.

One of the main functions of the device is to prepare and schedule bursts of MPE-FEC frames according to the parameters of the registered services. This is not an easy task especially if bandwidth utilization is taken as a priority.

One simple solution to this problem would be using “slotted allocation” or “static time-slicing” mode. In this mode the device allocates constant portions of the time frame for each service and fills the bursts when IP datagrams become available.

Obviously this approach is not efficient and wastes bandwidth during lower bit rate periods and service interruptions. It can even lead to a packet loss if the service bit-rate goes higher and requires additional slots than the already allocated portions of the time frame.

The other more complex and efficient solution would be the “dynamic time-slicing allocation” mode. The encapsulator allocates future bursts of the service based on the incoming IP traffic rate of that service. If a service has a higher bit rate in one moment in time it will occupy a larger portion of the available bandwidth. Since our solution uses a built in SFN adapter – the output bit rate that the encapsulator generates matches exactly the bit rate of modulators in the SFN network and is selected based on bandwidth, constellation, code rate, and guard interval.

This approach is efficient and reliable with CBR and VBR services.
DVE 6000 implements two independent “Dynamic Allocation” and “Slotted Allocation” modes. Depending on the services, system integrators may choose the appropriate scheme. “Slotted Allocation” can be used for example in a network with a large number of low bit rate CBR services where it is necessary to preserve uniform delivery of the content in static time slots and intervals. Slotted Allocation can also be used for channels where the latency needs to be minimized. In the most cases we believe broadcasters will choose the flexibility and the efficiency of the “Dynamic Time-Slicing” mode which will utilize better the bandwidth and will allow delivery of CBR and VBR content reliably and efficiently without dropping packets.

User Friendly Setup and Monitoring

Control Interfaces

• Intuitive WEB GUI interface
• SNMP
• CLI on Telnet
• CLI on RS-232

Selectable Parameters

• QOS Parameters selectable for each service
• FEC strength and FEC overhead adjustable for each service

Status Monitoring

• Time slice allocation per service
• Bandwidth efficiency and utilization per service
• Bit rates per service

DVB-H Network Manager Application

• Remote setup and configuration of:
  • Encapsulator services and parameters
  • Network Topology
  • Device Control
• Monitoring of:
  • Service Transmission
  • Network Efficiency

DVE6000 IP Encapsulator Rear Panel

DVB-H Transmission System Overview

The implementation of IP Datacast over DVB-H combines the DVB-H radio transmission technology with the Internet Protocol (IP). This combination makes it possible to broadcast any kind of digital content as IP packets, which is the same format used to transfer digital content on the internet. IP Datacast offers the advantage that the existing broadcast networks can be extended to provide more video services using the same bandwidth.

The common IP layer means that applications, content formats and middleware technologies developed within mainstream IT can be applied in IPDC terminals as well. From a product and service development point of view, this means that the existing technology can be reused. As a result, the consumer can experience the best possible combination of broadcast and multimedia content with their mobile handset.

In the Mobile Broadcast, the device power consumption is a concern. The DVB-H standard is using the "time slicing" technology (see diagram below). In order to enable a longer battery lifetime for a mobile device, the signal is received in bursts, which are buffered and played out over a longer period of time. Between bursts, the receiver can be shut down, resulting in considerable power savings.

Time Slicing Diagram

The DVB-H standard also requires more effective error corrections options, making the reception of the service possible in difficult conditions, even with a small terminal built-in antenna.

From a service and media business perspective, digital broadcasting is attractive because it makes use of high bandwidth channels with high transmission speeds. Further, broadcasting is not sensitive to the number of people receiving the content within the coverage area. It makes broadcasting very cost efficient means to deliver content to mass audiences when compared to point-to-point transmission.

IPDC and mobile Broadcast open a whole new era in mobile multimedia distribution, by largely removing the obstacles set by limited capacity and high priced connections. With reasonable cost, consumers have a selection of TV-like services and other multimedia content brought directly into their mobile handsets.

DVB-T / DVB-H System Diagram