Method for switching transmission modes of multimedia broadcasting service and multicasting service

A technology for multimedia broadcast and multicast services, which is applied in the field of switching of MBMS service transmission modes, can solve the problems of unstable number of users and system instability, and achieve the effect of accurate switching and improving stability.

Inactive Publication Date: 2011-09-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the process of counting or recounting, the number of users receiving MBMS services in the cell needs to be counted in real time, but the number of users counted is unstable, which may cause the MBMS service in a cell to switch back and forth between the two transmission modes. For example, during the counting process, the initial counting result is that the number of MBMS service users in the cell exceeds the threshold, and the next counting result is that the number of MBMS service users in the cell is less than the threshold. According to the two different counting results, the system may frequently switch service transmission mode, it is easy to cause system instability

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  • Method for switching transmission modes of multimedia broadcasting service and multicasting service
  • Method for switching transmission modes of multimedia broadcasting service and multicasting service
  • Method for switching transmission modes of multimedia broadcasting service and multicasting service

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Embodiment 1

[0031] This embodiment is a specific embodiment of carrying out MBMS service transmission mode switching according to switching rules when the system initially counts the number of users. The first method adopts the PTP mode, and the second method adopts the PTM mode, such as figure 1 As shown, it specifically includes the following steps:

[0032] 101. When the MBMS service is initiated, start a fixed statistical cycle to count the number of users interested in MBMS, and set the initial transmission mode to PTP mode;

[0033] 102. After the RNC finishes counting the number of users, it obtains a handover probability threshold value according to the current service PTP transmission mode and the range of the number of users;

[0034] 103. Randomly generate switching probability values ​​according to the uniform distribution of equal probability events [0, 1];

[0035] 104. Compare the handover probability threshold with the handover probability value. If the handover probabili...

Embodiment 2

[0037] This embodiment is a specific embodiment of counting the number of current service users and switching the MBMS service transmission mode according to the switching rules under certain circumstances of the MBMS service transmission mode. The first method adopts the PTP mode, and the second method adopts the PTM mode, such as figure 2 , including the following steps:

[0038] 201. After the MBMS service is initiated, different counting methods are adopted for the current service transmission mode, that is, real-time statistics are used to count the number of users for services in the PTP transmission mode, and fixed-period statistics are used for services in the PTM transmission mode;

[0039] 202. When the RNC finishes counting the number of users, set a handover probability threshold value according to the current service transmission mode and the range of the number of users;

[0040] 203. Randomly generate switching probability values ​​according to the uniform dist...

Embodiment 3

[0043] For step 203 in the second embodiment, the generation method of the handover probability value may also be: after the MBMS service is initiated, the handover probability value is generated by using the segmental function of the number of users according to the distribution range of the number of users of the current service and the service transmission mode. For example, when the number of users is large, if the service mode is the PTP mode, the switching probability value generated by the segmentation function is relatively large; if the service mode is the PTM mode, the switching probability value generated by the segmentation function is small; When the number of users is small, if the service mode is the PTP mode, the handover probability value generated by the segmentation function is small, and if the service mode is the PTM mode, the handover probability value is generated by the segmental function.

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Abstract

This invention discloses a method for switching transmission modes of a multimedia broadcasting service and a multicasting service, comprising the steps of: (1) counting number of users receiving the multimedia broadcasting service and the multicasting service in a cell; (2) setting a switching probability threshold according to current transmission modes of the multimedia broadcasting service andthe multicasting service and the range of the number of users; (3) generating the switching probability value switched by the service mode; and (4) comparing the switching probability value with theswitching probability threshold; if the switching probability value is more than the switching probability threshold, the switching is carried out, and otherwise, the current service transmission modeis maintained. The invention realizes flexible counting of the number of users of current services when the rule of the MBMS service user number in the cell is set, so that the stability of the system is improved; and the invention adopts different disciplines to generate the switching probability value, and compares the switching probability value with the switching probability threshold to determine whether the transmission mode is switched, thereby determining the conditions of switching the transmission modes, satisfying the requirement of the stability of the switching probability threshold and achieving the accurte switching of the service transmission mode.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for switching transmission modes of MBMS services (Multimedia Broadcast / Multicast Service, multimedia broadcast and multicast service). Background technique [0002] MBMS is a new service in the third-generation mobile communication, especially the point-to-multipoint service in which one data source sends data to multiple users in the mobile network, which can realize network resource sharing and improve the utilization rate of network resources, especially It is an air interface resource. The MBMS defined by 3GPP can not only realize the multicast and broadcast of plain text low-rate messages, but also realize the multicast and broadcast of high-speed multimedia services. [0003] The MBMS service can adopt different transmission modes in a cell of a mobile network: PTM (Point to Multipoint, point-to-multipoint) and PTP (Point to Point, point-to-point) modes. Among them, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06H04H20/10
Inventor 谢传波胡晔
Owner ZTE CORP
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