JP2003179971A - Digital broadcast by cellular phone access - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that there is a waste of resources especially in a cellular phone system, because the cellular phone system and a digital TV broadcast system are independent from each other in spite of the commonness that versatile data files are downloaded, in such a way that, in the cellular phone system, each subscriber has access to the general data, in other words, versatile data separately and downloads the data separately using wireless resources with limited resources, while the digital TV broadcast system provides versatile data files to many receivers in a wide service area. <P>SOLUTION: When data files are downloaded through the cellular phone system, data files are narrowed down based on requirement factors such as the versatility, the instantaneity, and the file size, and only the files that meet certain requirements are downloaded using a down link function of the digital TV broadcast, which results in the realization of the effective use of resources in the cellular phone system. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to digital contents especially for large-capacity and to some extent universal software in Internet access from a mobile phone system represented by i-mode (registered trademark). It relates to a system for downloading them from TV broadcasts.

[0002]

2. Description of the Related Art A mobile phone system including a PHS can access Internet sites to browse (browsing) contents on the network, and in some cases, software files such as music, movies, images and games from those sites. There are ways to use the mobile phone system, such as downloading. i-mode and EZ-Web
The services known by the names such as this correspond to it. In the conventional technology, each mobile phone terminal always operates within the service area from the base station, and the mobile phone terminal and the base station system are used regardless of whether data communication or voice communication is performed by Internet access such as i-mode. The communication with the side is communication using channel resources such as frequencies and time slots allocated to the mobile phone system.

Since its origin, the mobile phone system is originally intended for one-to-one communication between subscribers.
Resources such as finite frequencies given to each mobile phone system should be shared and used by many users. This is why it is called multiple access. In Internet access such as i-mode of a cellular mobile phone system, not only a circuit mode access channel for the purpose of one-to-one subscriber-to-subscriber communication, but also a packet mode access shared by subscribers. A large number of subscribers (or users) use their respective independent access resources to access a home page (Web site) on the Internet or in a closed IP network by using the communication channel, and the content of the page is accessed. It was supposed to download the data file. In that case, one page is not always accessed at the same time, but, so to speak, the relationship between the Web page and the subscriber is “one-to-many”.
It is a connection access form.

On the other hand, in digital TV broadcasting such as BS digital TV, not only TV images of moving images but also data broadcasting such as weather forecast and program information, data downloading of the data broadcasting and uplink access using a telephone line are used. The interactive banking service and TV shopping service that were previously available are now possible.

[0005]

However, in the above-mentioned prior art, there is no direct relation between the digital broadcasting and the cellular mobile phone system, and as shown in FIG. 3, especially in the cellular mobile phone system such as i-mode. Even though the two-way data broadcasting system for internet access and digital broadcasting are morphologically similar in the sense of one-to-many, both services are provided as separate entities. In FIG. 3, arrows indicate the flow of information. Therefore, an object of the present invention is to effectively combine the advantages of both and complement each other to provide a more rational and more efficient system with limited resource utilization.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention has a universal content to some extent and a relatively large capacity when a mobile phone terminal or the like accesses a network such as the Internet. When downloading data such as large data files or Web pages, it is not necessary to use the downlink of the cellular mobile phone system, but to digital TV broadcasting that has a service area far wider than the one-cell service area of the cellular mobile phone system. The system is characterized by merging a cellular mobile phone system and a digital TV broadcast by performing an accompanying data broadcast, that is, a broadcast as a downlink. As for digital TV broadcasting, terrestrial digital TV broadcasting using frequencies lower than microwaves is preferable to BS and CS broadcasting using satellites in terms of indoor penetration of radio waves, but is not necessarily particular.

[0007]

Embodiments of the present invention will be described below with reference to FIGS.

FIG. 1 is a schematic block diagram of a cellular mobile phone terminal to which the present invention is applied. The mechanical structure of the cellular phone terminal is not limited to a so-called mobile phone terminal having a microphone and a speaker, but a PDA (Personal).
It may be a data terminal to a computer called Data Terminal).

In FIG. 1, one mobile phone terminal is configured as one system terminal 100 having a function as a cellular phone terminal and a function as a digital TV broadcast receiver. 10
Reference numeral 1 means a receiving function up to the baseband of the cellular telephone terminal, and 102 means a receiving function up to the baseband of the digital TV broadcast receiver. 103 is an antenna, cellular cellular phone system frequency and digital TV
It is tuned to both broadcast frequencies. Instead of using one antenna for both of the above two frequencies, separate two
Of course, the essence does not change even if it is more than a book. Reference numeral 104 is a data processing unit. Here, in addition to the original data processing function as a cellular telephone terminal, a digital T
It has the function of accepting specific data from V broadcast and combining both. With this integration function, the user of the terminal does not need to be aware of which route the downloaded data was used for, nor is it necessary. 10
Reference numeral 5 is a display unit such as an LCD.

FIG. 2 is a general system conceptual diagram including the base station side. Reference numeral 201 in FIG. 2 is a cellular mobile phone terminal to which the present invention is applied, which is 100 in FIG. 1, and makes a normal call. However, in Internet access such as i-mode access, not only packet data communication is performed under the original control of the cellular mobile phone system base station 210, but also partial and appropriate data broadcasting from the base station 230 of digital TV broadcasting. To supplement the data downloaded from the Internet 240. At 220, each cellular base station is controlled to have a conventional switching function, and at the same time, the content data transmitted by digital TV broadcasting and the content data transmitted by the cellular cellular phone system are controlled separately. Of course, each actual 220 is further decomposed into smaller blocks inside thereof, but it is not described because it is far from the essence of the present invention.

As data transmitted to the cellular mobile phone terminal in digital TV broadcasting, universal music and video data files, portal site data relating to network access in an i-mode having a relatively large data amount, etc. There is. Further, it is possible to provide general information of the cellular mobile phone system regarding the system and cells that are originally transmitted on the BCCH (broadcast channel) of each base station in the cellular mobile phone system.

[0012] These data are separated, that is, whether the data is handled by the cellular mobile phone system, especially the downlink 320 of the cellular mobile phone system, or whether it is performed by using the downlink 330 of the digital TV broadcast, based on a factor described later, and appropriately. , Select the optimal downlink route and download to a specific mobile phone terminal.

Data broadcasting associated with digital TV broadcasting has an order of magnitude larger in service area than the one-cell range of the cellular mobile phone system. If the information transmission capacity of a single medium (that is, radio wave) is taken as the product of the information size (data size), information transmission time, and information transmission area, the information transmission capacity of the digital TV broadcast downlink is that of the service area. Very large due to its size. On the contrary, the information transmission speed is limited to some extent.

Therefore, the division of the data file to be transmitted to the portable telephone terminal or the like is performed by a factor of how general the information is, how large the information is, and whether the time immediacy is required. If the time immediacy is not so great, it is possible to download the mobile terminal or the like at midnight, for example. Also, very general data such as weather forecast and portal site data for Internet access such as i-mode can be downloaded from the downlink 330 of the digital TV broadcast in advance.

As described above, the sending side sends the information to the specific cellular terminal or the like by selectively using the downlink 320 of the cellular mobile phone system or the downlink 330 of the digital TV broadcast and the receiving side. Two
A system is provided that integrates and uses the information downloaded in the grid. It is needless to say that control for organically connecting the mobile phone terminal and the like to the cellular mobile phone system and the digital TV base station is performed through the control channel and the like, but this is not the essence of the present invention, and therefore will not be described.

[0016]

As described above, according to the system of the present invention, it has hitherto been possible to download relatively universal data and files (that is, closer to the character of broadcasting than one-to-one communication) for cellular cellular phone systems. It is possible to avoid that the other communication and the communication capacity are squeezed or limited by using the resources of. Mobile phone terminals are becoming not only phone calls but also information terminals for other purposes such as various data communication and control equipment, etc., but with the expansion of the usage, the tightness of limited resources for information transmission such as channels is resolved. Is also an eternal task. The present invention contributes to solving the problem as much as possible.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a cellular mobile phone terminal to which the present invention is applied.

FIG. 2 is a general conceptual diagram to which the present invention is applied.

FIG. 3 is a conceptual diagram showing that Internet browsing and digital TV viewing from a conventional mobile phone terminal are similar.

[Explanation of symbols]

201 Mobile phone terminal 210, 211, 212, 213 to which the present invention is applied Cellular mobile phone base station 220 Base station controller, mobile phone switchboard and data division controller 230 to which the present invention is applied Digital TV broadcasting station 240 Internet network 310 Cellular Cellular Phone Uplink 320 Cellular Cellular Phone Downlink 330 Digital TV Broadcast Downlink 400, 401, 402, 403 Cellular Cellular Phone Cell

Claims (3)

[Claims] 1. A cellular mobile phone system characterized by performing data of an information file satisfying a specific condition on a cellular mobile phone terminal including PHS using a data downlink function of digital TV broadcasting. A system that combines a digital TV broadcasting system. 2. A terminal receiver characterized by being capable of receiving a digital TV broadcast with a cellular mobile phone base station in the system of claim 1, and combining and utilizing downloaded data from both. 3. Cellular mobile phone system and digital T
2. The system according to claim 1, wherein which of the V broadcasting systems is used to download the data is determined by the size of the information file, the immediacy of the download, and the universality of the data as a factor of the transmission information segmentation algorithm. .