Cell re-selection method for supporting multimedia broadcast services, equipment and system

Abstract

The embodiment of the invention provides a cell re-selection method for supporting multimedia broadcast services, equipment and a system, which relate to the field of communication. The problem that the continuity of MBMS services (multimedia broadcast multicast services) can not be ensured in a maximizing way when a plurality of cells meet a re-selection rule simultaneously is solved. The method comprises the following steps of: transmitting the frequency point information of cells to a terminal by a base station; receiving the frequency point information of the cells, which is transmitted by the base station, by the terminal and determining the frequency point priorities of a serving cell and adjacent cells according to the frequency point information; transmitting the service parameter of the serving cell and the re-selection parameters of the adjacent cells to the terminal by the base station; receiving the service parameter of the serving cell and the re-selection parameters of the adjacent cells, which are transmitted by the base station, by the terminal; and selecting a cell as the serving cell anew by the terminal. The embodiment of the invention is applied to the cell re-selection of multimedia broadcast services.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method, device and system for cell reselection supporting multimedia broadcasting services Background technique [0002] MBMS (Multimedia Broadcast Multicast Service, Multimedia Broadcast / Multicast Service) refers to a point-to-multipoint service that provides a data source to send the same data to multiple users in a mobile communication network, so as to realize network resource sharing and improve network resource utilization. , especially the utilization of air interface resources. [0003] In the mobile state, when the user uses MBMS service, according to the current protocol, when reselecting to a cell that does not support MBMS service or a cell that is not in the same MBMS domain address, the MBMS service will be interrupted. [0004] A cell reselection scheme is provided in the prior art. In the LTE (Long Term Evolution, long-term evolution technology) system, th...

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Problems solved by technology

[0009] In the process of realizing the above-mentioned guarantee of MBMS service continuity, the inventor found that at least the following problems exist in the prior art: when there are two cells with equal priority, one is a cell in the same multimedia broadcast domain, and the other is a non-multimedia broadcast cell ; and the R value of the non-multimedia broadcast cell is greater than other cells, then the UE will reselect to the non-multimedia broadcast cell, and the original multimedia broadcast service will be interrupted at this time

Under the constraints of the current reselection criteria, only the continuity of the residential cell can be guaranteed, and the continuity of the MBMS service cannot be guaranteed to the maximum extent.

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