Method and device for automatically switching China mobile multimedia broadcasting (CMMB) equipment cities

An automatic switching, urban technology, applied in the direction of access restrictions, electrical components, selective content distribution, etc., can solve problems such as unsafe driving

Inactive Publication Date: 2012-02-22
BEIJING QIANTU FANGYUAN SOFTWARE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially in the process of the user driving the vehicle, manual switching will cause unsafe driving

Method used

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  • Method and device for automatically switching China mobile multimedia broadcasting (CMMB) equipment cities
  • Method and device for automatically switching China mobile multimedia broadcasting (CMMB) equipment cities

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Embodiment Construction

[0020] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] figure 1 It is the flow chart of the method that CMMB equipment realizes city automatic switching according to the present invention; Wherein comprises the following steps:

[0022] Step 1. Load the frequency point deployment of the CMMB system in each city and the data table of the services provided;

[0023] In this step, the number of CMMB deployed base stations and the coverage area of ​​base station signals in various cities across the country are obtained from China Broadcasting Group Co., Ltd., as well as the frequency points and service IDs of base stations in each city; the services of each base station include audio and video services and data receiving services and other data information. The above data is anal...

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Abstract

The invention discloses a method for automatically switching China mobile multimedia broadcasting (CMMB) equipment cities. The method comprises the following steps of: (1) loading the frequency point deployment of a CMMB system in each city and a data list of the CMMB system for providing service; (2) receiving global positioning system (GPS) positioning information by CMMB equipment to determine the current city and judge whether the current city is changed, wherein if the current city is not changed, the following steps are not carried out until the current city is changed; (3) acquiring a CMMB frequency point of a changed city, and searching an available base station for the frequency point; (4) automatically switching the CMMB equipment to a searched available frequency point; and (5) starting available service corresponding to the available frequency point.

Description

technical field [0001] The invention relates to the field of multimedia broadcasting, in particular to a method and device for automatically switching cities of CMMB (China Mobile Multimedia Broadcasting) equipment. Background technique [0002] As CMMB (China Mobile Multimedia Broadcasting) services are installed in mobile devices such as mobile phones, PNDs and vehicles, especially the expansion of CMMB network coverage, as well as the development of audio and video services and some services, CMMB has become the mainstream and development of mobile TV. Direction, the public's demand for this service is also increasing, more and more CMMB equipment has been developed and designed, and provided to enterprises and public users in large quantities, and become a part of people's daily life and travel. However, due to the different frequency points of base stations deployed in CMMB cities, users move from one city to another, and CMMB devices cannot continue to watch TV or rece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W36/00H04W48/16H04N21/414
Inventor 西琦
Owner BEIJING QIANTU FANGYUAN SOFTWARE TECH
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