KR20020075108A - A method for providing broadcasting service using mobile communication network - Google Patents

Abstract

The present invention provides a broadcast service using a mobile communication channel used for normal point-to-point communication, and performs a handover when the mobile terminal moves to receive the broadcast service continuously without interruption. A method for providing a broadcast service using a mobile communication network, the method comprising: a base station, a switch, a mobile communication data network, an internet network, and a mobile communication data network or the internet network to store, convert, and transmit broadcast contents to a base station. A broadcast service providing method for broadcasting a broadcast content provided from the broadcast server to a mobile terminal through the base station, wherein the base station is on a forward common control channel constantly monitored by the mobile terminal. Information about a broadcast channel consisting of one or more data call channels Also it carries the transmission and, at the same time, a first step of transmitting a broadcast content over the broadcast channel; And a second step of receiving, by the corresponding mobile terminal acquiring the broadcast channel information, the broadcast contents of the broadcast channel based on the acquired broadcast channel information when the preset broadcast reception mode is selected.

Description

A method for providing broadcasting service using mobile communication network

The present invention relates to a broadcast service providing method using a mobile communication network. More particularly, the present invention provides a broadcast service using a mobile communication channel used for normal point-to-point communication. The present invention relates to a broadcast service providing method using a mobile communication network to perform a handover and continuously receive a broadcast service without interruption.

1 is a schematic block diagram for a short message service similar to a broadcast service in a general mobile communication system. As shown in the figure, the terminal 11, the base station 12, the exchange 13, and the short message service are shown in FIG. It consists of the center (SMSC) 14.

A conventional channel for mobile communication is a channel for transmitting a signal from the base station 12 to the terminal 11, and a pilot channel for distinguishing a base station and transmitting a reference signal. Paging channel used for calling), a control channel for transmitting various control signals to the terminal 11, a traffic channel for transmitting data, and the like. The characteristics of such channels are briefly described as follows.

First, the channels may continuously transmit data according to the type or intermittently transmit data only when necessary. In the conventional short message service, a time division of a paging channel is performed and data is transmitted at an unused time. As a service for receiving data, only one terminal may receive the data or multiple terminals may jointly receive the data.

In addition, the existing traffic channel or control channel is a dedicated channel, and each terminal can receive only one channel by multiplying a pilot signal for distinguishing a base station by an orthogonal code for dividing a channel. It is determined in the process of setting the.

However, when providing a broadcast service using an existing paging channel, there is a limitation in the amount of transmission and speed, and the traffic channel is also a characteristic of a dedicated channel that allows each terminal to receive only one traffic channel as described above. Therefore, there is a disadvantage that can not be used for broadcast services.

In order to solve the above problem, the next generation mobile communication system may define and use a separate broadcast channel, but there is a problem in that the number of channels is limited in a communication environment.

The present invention was created in order to solve the existing problems caused by using various channels of a mobile communication network as a broadcast service as described above, and an object thereof is to provide a broadcast service using a traffic channel of a next generation mobile communication system as a broadcast channel. The present invention intends to implement a broadcast service providing method using a mobile communication network.

Another object of the present invention is to provide a mobile communication network to continuously receive the broadcast service without interruption by performing a handover between each broadcast channel of the adjacent cells when the mobile terminal is receiving a broadcast through the broadcast channel as described above It is to implement a broadcast service providing method using a.

It is still another object of the present invention to implement a broadcast service providing method using a mobile communication network, which enables an incoming call to another call signal during broadcast reception in a mobile terminal.

1 is a schematic block diagram for a short message service in a general mobile communication system,

2 is a block diagram of a mobile communication system to which the present invention is applied;

3 is a flowchart of a broadcast service providing method using a mobile communication network according to an embodiment of the present invention;

4 is a configuration diagram of a data format of a paging channel according to the present invention;

5 is a configuration diagram of a data format of a traffic channel according to the present invention;

6 is a flowchart of a handover method according to the present invention.

※ Explanation of code for main part of drawing

21: mobile terminal 22: base station

23: exchange 24: mobile communication data network

25: Internet network 26: broadcast server

In order to achieve the above object, a broadcast service providing method using a mobile communication network according to the present invention is connected to a base station, a switch, a mobile communication data network, an internet network, and the mobile communication data network or the internet network to broadcast contents. A broadcasting service providing method for storing, converting, transmitting to a base station, and the like, and broadcasting contents provided from the broadcasting server to a mobile terminal through the base station, wherein, at the base station, the mobile terminal is always present. A first step of transmitting information on a preset broadcast channel as one or more data call channels on a forward common control channel to be monitored, and transmitting broadcast content through the broadcast channel; And a second step of receiving, by the corresponding mobile terminal acquiring the broadcast channel information, the broadcast contents of the broadcast channel based on the acquired broadcast channel information when the preset broadcast reception mode is selected.

In the present invention configured as described above, the forward common control channel is composed of a paging channel or other common channels, and the data call channel is composed of a traffic channel, using a traffic channel of a next generation mobile communication system as a broadcast channel. The above object of providing a broadcast service can be achieved.

The preset broadcast channel information includes an orthogonal code for the data call channel and a data transmission rate. When there are a plurality of data call channels as the broadcast channel, each of the plurality of data call channels is mutually different. By using a different orthogonal code, the base station demultiplexes and transmits the broadcast contents to each of the data communication channels, and correspondingly, the mobile terminal multiplexes and receives the broadcast contents of the plurality of received channels. Enable high speed transmission.

In addition, in the second step, the mobile station includes the broadcast channel information of another base station adjacent to the broadcast content of the broadcast channel, and the mobile station is included in the received broadcast content during the reception of the broadcast content. Acquiring channel information, and performing the handover based on the quality of the obtained information and the base station-specified received signal (Pilot signal) by the corresponding mobile terminal which is receiving the broadcast. The other object of achieving the broadcast service without interruption by enabling handover between each broadcast channel of the cells can be achieved.

In addition, in the second step, the mobile terminal acquires the paging channel information during the reception of the broadcast content, and includes paging channel information copied in the broadcast content of the broadcast channel. By selectively performing an incoming call during broadcast reception on the basis of the above, it is possible to achieve the above another object for enabling the mobile terminal to receive another call signal during broadcast reception.

Next, preferred embodiments will be described with reference to the drawings after describing the present invention.

The broadcast service provider selects one or a plurality of traffic channels as a broadcast channel and uses a fixed allocation of an orthogonal code separating the channels. The base station wirelessly transmits the service contents transmitted through the broadcasting server, the Internet, and the mobile communication data network through the broadcasting channel to the public network, and the corresponding terminal subscribed to the broadcasting service distinguishes the signal obtained by multiplying the base station division signal by the orthogonal code of the broadcasting channel. To receive it. Each user may receive a broadcast signal and listen to it through his or her own terminal, or may select and listen to a preset list. The user may also store each content and receive it at a desired time or transmit it to others. To this end, the terminal should receive and store information (eg, an orthogonal code, a transmission rate, etc.) about a channel set as a broadcast channel in advance through a paging channel, a control channel, and other channels, or set it offline. The mobile communication data network and the Internet network deliver the broadcast contents transmitted from the broadcast server to the base station, and the broadcast server plays the role of storing, converting, and providing the broadcast contents.

One or more broadcast channels can be set and used. In the case of multiple sets, the broadcast content reaching the base station is demultiplexed and transmitted to each channel, and the terminal multiplexes the multiple channels to receive processing. As a result, a high data transfer rate can be achieved.

If the terminal moves while receiving the broadcast service, the terminal should be able to receive the broadcast service continuously by performing a handover. At this time, if the terminal determines the quality of the received signal and requests a handover to the base station as in the conventional method, the load of the base station and the exchange is soared if there are a large number of users, it cannot be processed.

Therefore, the handover of the broadcast channel has already been acquired when the terminal detects the signal of the received signal quality (for example, the reception power of the pilot channel) after determining that the handover is necessary after starting the broadcast service. If it is determined that there is the same service using broadcast channel information of a neighboring cell, the broadcast service of the corresponding base station is received using a signal multiplied by a division signal of a neighboring target base station and a channel division orthogonal code, and the broadcast of the corresponding base station currently received A soft handover is performed in combination with the signal or a hard handover is performed directly.

If the same broadcast service does not exist in an adjacent cell, broadcast service reception is automatically terminated, and a state in which the same broadcast service is continuously searched using a paging channel or the like is changed. The broadcast information of the neighbor cell is acquired through a paging channel or broadcasted in a broadcast channel before reception of a broadcast service and used for handover.

In addition, the paging information is included in the broadcast information transmitted through the broadcast channel so that the paging information can be received to receive a call arriving at the user even during the broadcast reception.

Hereinafter, a broadcast service providing method using a mobile communication network according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a mobile communication system to which the present invention is applied. As shown in the figure, the terminal 21, the base station 22, the exchanger 23, the mobile communication data network 24, and the Internet network ( 25) and a broadcast server 26 connected to the mobile communication data network 24 and / or the internet network 25 to store, convert and transmit broadcast contents to a base station.

3 is a flowchart illustrating a broadcast service providing method using a mobile communication network according to an embodiment of the present invention. Since the present invention is applied to the mobile communication system of FIG. 2, it will be described in parallel with its operation.

First, the base station 22 receives broadcast data provided from the broadcast server 26 through the mobile communication data network 24 or the internet network 25 (S301), and wirelessly receives the received data. It converts into data and broadcasts it to the public network through one or more traffic channels as preset broadcast channels, and includes information on the traffic channel set as the broadcast channel through a paging channel as a forward common control channel monitored by the mobile terminal. The broadcast information is loaded to broadcast (S302).

Here, the data format of the paging channel including the broadcast information may be configured as shown in FIG. 4, for example. Referring to FIG. 4, the data format of the paging channel includes paging information and broadcast information. The information is composed of information such as a corresponding base station ID (i.e., base station identification signal), broadcast channel ID (i.e., orthogonal code of the traffic channel as the broadcast channel), and program name, and data transmission rate information (not shown) is added thereto. Preferably, when using a plurality of broadcast channels using the broadcast channel as one or more traffic channels, the broadcast channel ID and the corresponding program name are configured in plural numbers corresponding to the number of broadcast channels.

Next, when the broadcast service by performing the steps S301 and S302 is being provided, the terminal 21 monitors the paging channel (S303), and the broadcast (channel) information included in the paging channel, that is, Information such as an orthogonal code and a transmission speed of the traffic channel as the broadcast channel is obtained (S304).

The traffic channel as the broadcast channel may be set and used in one or a plurality. When used in a plurality, the different orthogonal codes may be used for each of the plurality of traffic channels. The broadcast data is demultiplexed and transmitted to each channel, and correspondingly, the terminal 21 can achieve a high data rate by multiplexing and receiving the plurality of channels.

The terminal 21 selects a specific key promised according to a preset content and sets a broadcast reception mode (S305) based on the base station identification signal and the orthogonal code included in the broadcast information obtained in step S304. In step S306, the broadcast signal received through the traffic channel is received. Each user may have his or her own terminal to receive and listen to broadcast data as described above, or to selectively receive and listen to a preset list, and to store the received contents and listen to them at a desired time, and send them to others. It is also possible to operate according to the mode when the user selects the corresponding mode by the program setting of the terminal.

In addition, the base station 22 includes the broadcast (channel) information of another neighboring base station and the copied paging channel information among the broadcast contents transmitted through the corresponding traffic channel as the broadcast channel. For example, the format may be configured as shown in FIG. 5. Referring to FIG. 5, the data format of the traffic channel may include various broadcasting data such as news and securities, paging information as the copied paging channel information, and other adjacent base stations. The broadcast information includes neighboring base station broadcast information as broadcast (channel) information, and the broadcast data information includes player information, substantial broadcast data, and CRC information for error checking. The broadcast information of the neighbor base station is the same as the configuration of the broadcast information included in the data format of the paging channel of FIG. 4, but is composed of the neighbor base station ID instead of the belonging base station ID.

The reason for the transmission including the paging information in the traffic channel as described above is that, in step S306, the terminal 21 acquires the paging information during the reception of the broadcast data through the traffic channel, and the obtained paging. This is to allow the user to selectively receive the call while receiving the broadcast based on the information.

The reason for transmitting the neighboring base station broadcast information in the traffic channel as described above is that, in step S306, the terminal 21 acquires the broadcast information of the neighboring base station while receiving the broadcast contents, and the obtained broadcast. To perform the handover based on the information and the quality of the received signal divided by the base station (that is, the strength of the received power of the pilot signal of each base station), the handover will be described with reference to FIG. As follows.

6 is a flowchart illustrating a handover process in a mobile terminal according to the present invention.

First, the terminal 21 acquires broadcast information of a corresponding base station through a paging channel in step S304 of FIG. 3 and obtains broadcast information of a neighbor base station while receiving broadcast data through a traffic channel in step S306 (S601). ).

As described above, while acquiring broadcast information of the base station and the neighboring base station and receiving broadcast data (S602), the power strength of the pilot signal transmitted and received from the base station is compared with the power strength of the pilot signal received and received from the neighboring base station. In step S603, if it is determined that handover is required, the same broadcast as the broadcast currently being received in the neighbor cell is present based on the broadcast information of the neighbor base station obtained in step S601. It is determined whether to (S604).

If it is determined in step S604 that the same broadcast does not exist in the neighbor cell and broadcast data from the base station is not received, the broadcast service is automatically terminated. Accordingly, the corresponding terminal 21 is terminated in step S303 of FIG. 3. It starts again from the paging channel monitoring state of the process (S605). If it is determined in step S604 that the same broadcast exists in the neighbor cell, the signal obtained by multiplying the division signal for the corresponding base station of the neighbor cell and the broadcast channel division orthogonal code based on the obtained broadcast information of the neighbor base station is obtained. The adjacent base station receives the broadcast signal and performs soft handover or hard handover (S606).

As described in detail above, in the broadcast service method using the mobile communication network according to the present invention, since a wireless channel used for normal point-to-point communication can be used for broadcasting, a plurality of users can receive information using one channel. The wireless channel can be efficiently used, and the handover according to the present invention creates an effect of receiving broadcast service without interruption while moving.

Claims (10)

And a broadcast server connected to the base station, the exchange, the mobile communication data network, the Internet network, and the mobile communication data network or the Internet network to store, convert, and transmit broadcast contents to the base station. In the broadcast service providing method for broadcasting the broadcast content provided to the mobile terminal through the base station, The base station, on the forward common control channel that is always monitored by the mobile terminal, the first information to be transmitted on the broadcast channel via the information on the preset broadcast channel on one or more data communication channels; step; And In a corresponding mobile terminal acquiring information on the broadcasting channel, receiving a corresponding broadcasting content by tuning to the broadcasting channel based on the acquired broadcasting channel information when the preset broadcasting reception mode is selected; Broadcast service providing method using a mobile communication network, characterized in that configured. The method of claim 1, And the forward common control channel is a paging channel and the broadcast channel is a traffic channel. The method of claim 1, And the broadcast content of the broadcast channel includes information on a broadcast channel of another adjacent base station. The method of claim 3, wherein In the second step, the mobile terminal acquires information on a broadcast channel of another neighboring base station during the reception of the broadcast content, and performs a handover based on the obtained information and the quality of the received signal separated by the base station. Broadcast service providing method using a mobile communication network, characterized in that. The method of claim 4, wherein The quality of the received signal is a broadcast service providing method using a mobile communication network, characterized in that the strength of the received power for the pilot signal of each base station. The method according to claim 1, 3 or 4, The broadcasting channel information includes a division signal of a corresponding base station, a broadcasting channel identification signal, a corresponding program name of a divided broadcasting channel, and a data transmission rate. The method of claim 1, When there are a plurality of broadcast channels, the divided signals between broadcast channels as information on the broadcast channels are used as different orthogonal codes for the plurality of broadcast channels, and the base station demultiplexes the broadcast contents to the respective broadcast channels. And in response, the mobile terminal multiplexes and processes the received broadcast contents of the plurality of channels. The method of claim 1, And transmitting information carried on the common control channel by copying the information on the common control channel among the broadcast contents of the broadcast channel. The method of claim 8, In the second step, the mobile terminal receives the broadcast content, obtains information on the common control channel, and selectively receives a call during broadcast reception based on the obtained information. Broadcast service providing method using. The method according to claim 8 or 9, And the information carried on the common control channel is information on a paging channel.