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Transmitting method of MBMS (Multimedia Broadcast Multicast Service) file fragment, transmission system and service server

A file slice and server technology, applied in the communication field, can solve the problems of taking a long time, affecting the service quality of the service, reducing the utilization rate of MBMS service resources, etc., to achieve the effect of improving the service usage experience and reducing the retransmission time.

Active Publication Date: 2012-08-29
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] When the first broadcast file repair method is used, the MBMS platform needs to broadcast the MBMS file multiple times, which reduces the resource utilization of the MBMS service. It will affect the distribution of subsequent broadcast content; when using the second type of single-wave file repair, the MBMS platform needs to establish a point-to-point unicast channel with a terminal that sends a file repair request. When a large number of terminals need to perform file repair , this method will occupy more unicast data resources and affect the service quality of other services

Method used

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  • Transmitting method of MBMS (Multimedia Broadcast Multicast Service) file fragment, transmission system and service server
  • Transmitting method of MBMS (Multimedia Broadcast Multicast Service) file fragment, transmission system and service server
  • Transmitting method of MBMS (Multimedia Broadcast Multicast Service) file fragment, transmission system and service server

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Embodiment 1

[0035] Such as figure 2 As shown, it is a schematic diagram of the method steps in the first embodiment of the present invention, and the first embodiment includes the following steps:

[0036] Step 101: The MBMS platform groups the multiple terminals according to the received error file slice information from multiple terminals, and each terminal in each group has at least one identical error file slice, and the same error file slice can be set in the present invention The error file slice is used as a common error file slice.

[0037] In the first embodiment, after the terminal determines that an error has occurred in the file piece received by itself, it reports the file repair request including the triplet information of the wrong file piece to the MBMS platform. Considering the different processing capabilities of each terminal and the The channel conditions are different, and the time points for the terminals in the coverage area of ​​the MBMS platform to report the fi...

Embodiment 4

[0089] The MBMS service server 22 involved in the fourth embodiment may be the MBMS service server in the third embodiment.

[0090] In the embodiment of the present invention, the entire broadcast area is divided into several retransmission broadcast areas according to geographical areas by using the location information of the cell where the terminal is located, and different common error file pieces are repaired in parallel in different retransmission broadcast areas, and then selected according to the situation. Unicast or broadcast repairs the personality error file pieces of each terminal in the cell. Compared with the traditional broadcast file repair scheme, it reduces the retransmission time of file pieces and the repair time of file pieces, provides a better service experience, and can reliably broadcast and transmit more file pieces within a unit of time. Compared with the unicast file repair scheme, when there are many lost or damaged file pieces, the resource occu...

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Abstract

The invention discloses a transmitting method of an MBMS (Multimedia Broadcast Multicast Service) file fragment. The method comprises the following steps of: receiving error file fragment information of a plurality of terminals by an MBMS platform; grouping the plurality of terminals by the MBMS platform according to the received error file fragment information, wherein each terminal in each group comprises at least one same error file fragment, and the same error file fragments are used as common error file fragments; determining a retransmission broadcast region corresponding to each group by the MBMS platform according to the cell of the terminals of each group; and respectively broadcasting the common error file fragments corresponding to each terminal in each retransmission broadcastregion to the terminals in each retransmission broadcast region by the MBMS platform. Through the invention, under the condition of not obviously increasing unicast resources, the retransmission timeand the repair time of the file fragments are reduced. The invention also discloses a transmission system of the MBMS file fragments and an MBMS service server.

Description

technical field [0001] The invention relates to data transmission technology in the communication field, in particular to a method for sending multimedia broadcast and multicast service file slices, a transmission system and a service server. Background technique [0002] In the third generation mobile communication system (TD-CSDMA, WCMDA, CDMA2000), downlink communication services can be divided into two categories, one is unicast service (Unicast service), the other is multimedia broadcast multicast service (MBMS , Multimedia Broadcast Multicast Service). The unicast service is a service in which a data source sends data point-to-point to a user terminal, and the MBMS service is a service in which a data source sends data point-to-multipoint to multiple user terminals. The MBMS service can realize network resource sharing, and provide services for as many user terminals as possible with the same needs with as few resources as possible. [0003] The MBMS file transmitted...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04W4/06H04W28/04
CPCH04L12/1868H04L51/38H04L12/5895H04L12/189H04L51/58
Inventor 卢山常辉陈心昕
Owner CHINA MOBILE COMM GRP CO LTD
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