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DAIDALOS 21-08-0147-00-00001/11 IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-08-0147-00-0000 Title: DVB-H Networks Date Submitted: May, 2008 Presented.

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Presentation on theme: "DAIDALOS 21-08-0147-00-00001/11 IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-08-0147-00-0000 Title: DVB-H Networks Date Submitted: May, 2008 Presented."— Presentation transcript:

1 DAIDALOS /11 IEEE MEDIA INDEPENDENT HANDOVER DCN: Title: DVB-H Networks Date Submitted: May, 2008 Presented at IEEE session #26 in Jacksonville Authors or Source(s): Burak Simsek (Fraunhofer Institute) Juan Carlos Zuniga (InterDigital) Abstract: This presentation summarizes DVB-H characteristics and describes the service discovery procedure of DVB-H.

2 DAIDALOS /11 IEEE presentation release statements This document has been prepared to assist the IEEE Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEEs name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEEs sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE The contributor is familiar with IEEE patent policy, as outlined in Section 6.3 of the IEEE-SA Standards Board Operations Manual and in Understanding Patent Issues During IEEE Standards Development Section 6.3 of the IEEE-SA Standards Board Operations Manualhttp://standards.ieee.org/guides/opman/sect6.html#6.3 IEEE presentation release statements This document has been prepared to assist the IEEE Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEEs name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEEs sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards Board bylaws and in Understanding Patent Issues During IEEE Standards Development Section 6 of the IEEE-SA Standards Board bylawshttp://standards.ieee.org/guides/bylaws/sect6-7.html#6

3 DAIDALOS /11 DVB Networks Modulator & Transmitter Multiplexer MPEG-2 TV Service - MPE - Time Slicing PSI/SI Management Program Specific Information / Service Information (PSI/SI) Management IP Services DVB Transmitters Cell_1 Cell_2 Cell_3 Cell_x

4 DAIDALOS /11 DVB-H Transport Structure Here are the IP streams TV Channels / IP Services Broadcasters DVB-H Network Providers

5 DAIDALOS /11 IP within DVB IP Platform: A set of IP/MAC streams and/or receiver devices managed by an organization - The IP/MAC platform concept allows for the coexistence of several non-harmonized IP/MAC address spaces on the same DVB network Two IP streams carry the same IP datagram stream if: - Source IP addresses are identical - Destination IP addresses are identical - IP streams are associated with the same IP platform - Destination IP address is not in unicast range

6 DAIDALOS /11 Handover from X to DVB-H Popular Multimedia Services, hence unidirectional Handover is triggered by some means from X to DVB-H What kind of information do we need in order to switch to the same stream? Without any prior information it is possible to have this information but takes too long…

7 DAIDALOS /11 First Step: Scanning / Tuning Worst case: Whole Frequency scanning (e.g. 470MHz – 862MHz) NIT_actual – NIT_other Reduces the frequencies to be scanned to a specific list If does not exist, either found frequencies are used or whole scan is carried on For each found network, accomplish tuning Search within transport stream if the IP service exits or not…

8 DAIDALOS /11 Finding the right service HeaderPayload 4 bytes 188 bytes HeaderPayload Header Sync byte Transport error indicator Payload unit start indicator Transport priority PID Transport scrambling control Adaptation field control Continuity counter Adaptation field Packet IDentifier Finding right service means finding the right PID (packet identifier)

9 DAIDALOS /11 How to find PIDs PAT (pid=0) A V D D1300 PMT (for pid=200) Service_id pmt_pid elementary_pid stream_type component_tag AAAGASDGJHGHMHSHAGAAAAAAAAAAA VJDGHDGHKGHKFGHKFGRTUWRTZWWRZ HGJDGHNVBNRSTHWRTHWRTHWRTHRTH GHSHGJJJFGDDDDDDDDDDDDDDDDDDD Multiplex Service Component elementary_stream (pid=1000) Program Association Table Program Map Table

10 DAIDALOS /11 How to find PID of an IP Stream 1.Find network and tune 2.Find NIT_actual of the tuned network 3.Find NIT_actual of the new network which includes INT link_descriptor 4.Find service ID of INT table of the platform we are interested in 5.Find the PID of the INT table for the PMT 6.Find the PID of the IP service (based on the IP Address) from INT 7.Find the PID of the IP Service for the PMT 8.Find PID of the elementary stream (IP Stream)

11 DAIDALOS /11 Parameters for Optimum Handovers with DVB-H ParametersSourceRemark cell_id TPS bitsUniquely cell identifier for DVB-T/H cell_list_descriptor NITTo announce cells and sub-cells of the DVB-H network cell_frequency_link_descriptor NIT To announce all frequencies used to transmit the TS within the DVB network original_network_id NITtypically allocated by DVB on a per country basis network_id NIT transport_stream_id PATIdentifies uniquely an TS within an original DVB network linkage_descriptor NITto announce INT service_id PMTIdentifies a DVB service component_tag Identifier for a component of a DVB service Platform_id INTidentifies an IP platform IP source/destination address INTIdentifies a single IP stream PID PAT/PMTIdentifier for component_tag * not an exhaustive list

12 DAIDALOS /11 Handover Overview X DVB-H In case service exists over DVB-H make handover decision Else DAIDALOS could consider creating the service in case of demand, but currently DVB-H would not…(no.21 problem) They target customized services as the next steps… No resource availability check (avoid this) Inform DVB Network about the handover complete (optional) Inform Network X about handover complete (optional) Multicast leave can be synchronized with this information

13 DAIDALOS /11 Thanks For Your Attention

14 DAIDALOS /11 Program Specific Information / Service Information (PSI/SI) PAT: Program association table (helps finding services) PMT: Program Map Table (helps finding components of services) NIT: Network Information Table (gives network specific PHY information) INT: IP/MAC Notification Table (helps finding IP services) CAT: Conditional Access Table SDT: Service Description Table *(not an exhaustive list)

15 DAIDALOS /11 IP Matching Platform_id and IP source/destination addresses must be available in case there is no PID available Multicast IP addresses for each IP Platform are globally defined, hence IP addresses can be saved before ESG (Electronic Service Guide) of DVB-H provides IP Platform ID and IP Address of all available service… MIIS can provide with the ESG similar data enabling faster IP Platform ID – IP address information acquisition


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