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Method and apparatus for supporting handover using network control in dvb-h cbms system

A digital video broadcasting and mobile service technology, applied in broadcasting service distribution, specific information broadcasting system, power distribution switchgear, etc., can solve problems such as switching failure and service interruption

Inactive Publication Date: 2009-03-11
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite the simplicity of handover, conventional handover techniques have the following disadvantages: If the user fails to receive the necessary handover information in PSI / SI, the handover will fail and ongoing service will be interrupted
However, considering that PSI / SI transfers are periodic, handover may fail if the above operations are not performed at the proper time

Method used

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  • Method and apparatus for supporting handover using network control in dvb-h cbms system
  • Method and apparatus for supporting handover using network control in dvb-h cbms system
  • Method and apparatus for supporting handover using network control in dvb-h cbms system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] FIG. 2 is a signal flow diagram of a message exchange procedure for handover according to an exemplary embodiment of the present invention.

[0063] Referring to FIG. 2, the network to which the present invention is applied includes SM, broadcast network, and interactive network. The SM includes Mobility Management (MM) and is responsible for managing the user's access to services during terminal mobility. Therefore, when the received signal strength of the terminal is so low that handover is required, in step 201, the terminal sends a handover proposal message to the MM. The Handover Proposal message has the following message format

[0064] Table 1

[0065] Toggle Proposal ID User ID Service ID Supplier ID IP address IP platform ID service_id transport stream_id original network_id community_id network_id Toggle quality requirements (optional) Time for a signal quality measurement (optional) ...

Embodiment 2

[0099] FIG. 5 is a signal flow diagram of a message exchange procedure for handover according to another exemplary embodiment of the present invention.

[0100] Referring to FIG. 5, when the received signal strength of the terminal drops enough to require handover, in step 501, the terminal sends a handover proposal message to the network. The Handover Proposal message has the following information.

[0101] Table 7

[0102] Toggle Proposal ID User ID Service ID community_id Toggle quality requirements (optional) Time for a signal quality measurement (optional) Signal Measurement Results (Optional)

[0103] Referring to Table 7, the handover proposal ID identifies a handover proposal. User ID provides the ID of the user requesting the switch. The service ID provides the ID of the ongoing service, and the cell_id identifies the serving cell to which the terminal currently belongs. The Handover Quality Requirement is an optional el...

Embodiment 3

[0156] FIG. 9 is a signal flow diagram of a message exchange procedure for handover according to an exemplary embodiment of the present invention.

[0157] Referring to FIG. 9, when a change event occurs in the network, in step 900, the network sends PSI / SI to the terminal, and in step 901, the MM of the SM sends a change event message to the terminal.

[0158] The change event message has the format shown in Table 14.

[0159] Table 14

[0160] change event id change event type IP platform ID network ID Service ID service provider ID ESG Supplier ID IP address Transport Stream ID original network id frequency New Service ID New Service Provider ID New ESG Supplier ID new ip address New IP Platform ID New Transport Stream ID new original network id new network id private data T1 T2 (optional) network control instructions switch candidate roaming cand...

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Abstract

An apparatus and method for enabling a terminal to continuously receive an on-going service even when the terminal moves out of a serving cell or a home network in a DVB-H CBMS system are provided, in which a network controls a handover, designates a target cell for the terminal if the terminal is to perform the handover on an interactive channel, and when needed, processes the handover over an interactive network.

Description

technical field [0001] Generally, the present invention relates to digital video broadcast-handheld (DVB-H) broadcast and convergence of mobile services (CBMS) systems. More particularly, the present invention relates to a method and apparatus for providing handover (HO) information to a terminal to be handed over. Background technique [0002] DVB-H CBMS is a service that provides convenient functions by converging digital TV broadcast services with excellent mobile reception performance and mobile communication. With the recent evolution of TV technology from analog to digital, viewers can enjoy TV services at home with high definition television (HDTV) level, high picture quality, and high audio compact disc (CD) level quality. The diversification of modern equipment has brought about major changes in the activities and lifestyles of the audience. Accordingly, portable devices including mobile phones, personal digital assistants (PDAs), and laptop computers have been wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04W4/06H04W36/24
CPCH04W72/005H04H20/26H04H60/39H04H60/72H04W36/14H04W36/24H04W36/0007H04W72/30H04W36/08
Inventor 徐异凌安钟薰宋在涓李国熙
Owner SAMSUNG ELECTRONICS CO LTD