Broadband Digital Trunking Service Implementation Method and Trunking Scheduling Management Centre

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A broadband digital trunking service implementation method, wherein, said method comprising:

• a network side receiving a creating trunking bearer request sent by a trunking scheduling management center, and sending said creating trunking bearer request to a user with talking right in a group;
• said network side receiving a trigger request sent by said trunking scheduling management center, and establishing a dedicated or shared radio access bearer for all listening users in said group according to said trigger request.

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A trunking scheduling management center, wherein, said trunking scheduling management center comprising:

• a receiving module, configured to receive a trunking call establishment request;
• and
• a processing module, configured to, according to said trunking call establishment request, send a network side a creating trunking bearer request carrying call information and a transmission bearer address.

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A broadcast multicast service center (BM-SC), wherein, said BM-SC comprising:

• a converting module, configured to receive a creating trunking bearer request sent by a trunking scheduling management center, and convert quality of service information carried in said creating trunking bearer request into said trunking service's quality of service information identifiable by a mobility management entity (MME);
• a processing module, configured to generate a trunking service session control signaling and a transmission bearer address of a group call downlink in a multicast mode, and carry said trunking service session control signaling and said transmission bearer address into said creating trunking bearer request, and then send said request to said MME through a multimedia broadcast/multicast service gateway (MBMS-GW).

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A mobility management entity (MME), wherein, said MME comprising:

• an interface module, configured to forward a trunking call establishment request from a user equipment to a trunking scheduling management center, and forward a creating trunking bearer request that carries quality of service information and is from said trunking scheduling management center to an evolved NodeB and said user equipment via said BM-SC;
• a configuring and sending module, configured to:
• receive a trigger request sent by said user equipment after accepting said creating trunking bearer request, and configure transmission bearer information according to said trigger request, and convert said quality of service information into quality of service information identifiable by said evolved NodeB, and send said evolved NodeB a radio access bearer establishment request carrying said quality of service information identifiable by said evolved NodeB and said transmission bearer information.

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An evolved NodeB, wherein, said evolved NodeB comprising:

• an interface module, configured to receive a radio access bearer establishment request that carries quality of service information identifiable by said evolved NodeB and a transmission bearer information and is sent by a mobility management entity (MME);
• an establishing module, configured to, according to said radio access bearer establishment request received by said interface module, establish a radio access bearer.

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A multimedia broadcast/multicast service gateway (MBMS-GW), wherein, said MBMS-GW comprising:

• an interface module, configured to receive a trunking call establishment request sent by a broadcast multicast service center (BM-SC), and send a creating trunking bearer request carrying a multicast address to a mobile management entity (MME);
• and
• a distributing module, configured to, according to said creating trunking bearer request from said BM-SC, allocate a multicast address for a session.

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