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Multimedia broadcast multicast service system and its synchronization method

A multimedia broadcasting and multicasting service technology, applied in the multimedia broadcasting and multicasting service system and its synchronization field, can solve the problems of inconsistency in the processing of lower-layer network elements and the inability of lower-layer network elements to accurately schedule resources, etc., and achieve the effect of accurate scheduling

Inactive Publication Date: 2016-02-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] In the related art, when the lower-layer network element receives the MBMS session end message from the control plane with a delay or does not receive it, the lower-layer network element cannot accurately schedule resources, and the processing between different lower-layer network elements is inconsistent, and the present invention is proposed , to this end, the main purpose of the present invention is to provide a multimedia broadcast multicast service system and its synchronization method, to solve at least one of the above-mentioned problems

Method used

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  • Multimedia broadcast multicast service system and its synchronization method
  • Multimedia broadcast multicast service system and its synchronization method
  • Multimedia broadcast multicast service system and its synchronization method

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Experimental program
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Embodiment 2

[0133] Preferred embodiment two (new TYPE format, extremely simplified version of TYPE0)

[0134] Such as Figure 7 As shown, define a new SYNC PDU format, named TYPE3. This format is mainly used to indicate the last data packet (that is, the above-mentioned service end information). That is, when the base station receives a data packet in this format, it can know which data packet is the last data packet of the service, and no other data packets will arrive for this service.

[0135] PDUType: This parameter indicates the structure of the SYNC frame, which is located in the 4th to 7th bits of the first byte in the frame.

[0136] Value range: {0=no payload sync frame, 1=user data sync frame without compressed header, 2=user data sync frame with compressed header, 3=sync frame indicating tail, 4-15=reserved}.

[0137] Field length: 4bits.

[0138] TimeStamp: The relative time value of the start time of the synchronization sequence in a synchronization period.

[0139] Valu...

Embodiment 5

[0184] Such as Figure 10 As shown, reuse the existing SYNC PDU format - TYPE1. One or more bits in the spare bits in this format are used to indicate the information of the last data packet. That is, when the base station receives a data packet in this format, it can be considered that the data packet is the last data packet of the service, and no other data packets will come to the service.

[0185] Or, all data packets in the synchronization sequence where the last data packet is located adopt the format of this embodiment, indicating that the synchronization sequence is the last synchronization sequence of the service.

[0186] Figure 10 Parameters in the TYPE1 frame format: payload cyclic redundancy check: PayloadCRC, idle bit extension: Spareextention, payload field: Payloadfields.

[0187] For a specific synchronization method, reference may be made to preferred embodiment 4.

Embodiment 6

[0189] Such as Figure 11 As shown, reuse the existing SYNC PDU format - TYPE2. One or more bits in the spare bits in this format are used to indicate the information of the last data packet. That is, when the base station receives a data packet in this format, it can be considered that the data packet is the last data packet of the service, and no other data packets will come to the service.

[0190] Or, all data packets in the synchronization sequence where the last data packet is located adopt the format of this embodiment, indicating that the synchronization sequence is the last synchronization sequence of the service.

[0191] Figure 11 Parameters in the TYPE2 frame format: packet convergence protocol information: PDCPinformation (PacketDataConvergenceProtocolinformation), uncompressed payload IP header: UncompressedpayloadIPheader, Ipv6indic: Ipv6 indication.

[0192] For a specific synchronization method, reference may be made to preferred embodiment 4.

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Abstract

The invention discloses a synchronization method of a multimedia broadcasting multicast service system, comprising the following steps: when the service is ended, transmitting the service end information by the upper network element on the user side; knowing the service end by the lower network element according to the received service end information, and performing the corresponding process. The invention further discloses a multimedia broadcasting multicast service system. In the invention, the lower network element can timely obtain the specific end time of a service so as to determine whether the data is lost or ended and be capable of scheduling the resource accurately; the resource distribution of different lower network elements can keep the same service consistency, and the consistent process can be carried out to the same situation; therefore, a user terminal can normally receive the service data.

Description

technical field [0001] The invention relates to the communication field, in particular to a multimedia broadcast multicast service system and a synchronization method thereof. Background technique [0002] In order to effectively utilize mobile network resources, 3GPP (3rd Generation Partnership Project, Third Generation Partnership Project) proposed Multimedia Broadcast Multicast Service (Multimedia Broadcast Multicast Service, MBMS), which is a technology for transmitting data from one data source to multiple targets , realize the sharing of network resources (including core network and access network), and improve the utilization rate of network resources (especially air interface resources). [0003] In the existing LTE (Long Term Evolution, Long Term Evolution) technology, multiple MBMS services multiplexed on the same transport channel can dynamically share channel resources in the following manner, which is called dynamic multiplexing . The dynamic multiplexing mode...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06H04W56/00H04B7/26
Inventor 翟恒星艾建勋
Owner ZTE CORP