WO2009154057A1 - 放送システム、放送管理装置、および放送方法 - Google Patents
放送システム、放送管理装置、および放送方法 Download PDFInfo
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- WO2009154057A1 WO2009154057A1 PCT/JP2009/059442 JP2009059442W WO2009154057A1 WO 2009154057 A1 WO2009154057 A1 WO 2009154057A1 JP 2009059442 W JP2009059442 W JP 2009059442W WO 2009154057 A1 WO2009154057 A1 WO 2009154057A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
- H04H60/46—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for recognising users' preferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/38—Arrangements for distribution where lower stations, e.g. receivers, interact with the broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/42—Arrangements for resource management
- H04H20/423—Transmitter side
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/61—Arrangements for services using the result of monitoring, identification or recognition covered by groups H04H60/29-H04H60/54
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/23805—Controlling the feeding rate to the network, e.g. by controlling the video pump
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2385—Channel allocation; Bandwidth allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
- H04H20/30—Arrangements for simultaneous broadcast of plural pieces of information by a single channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H2201/00—Aspects of broadcast communication
- H04H2201/30—Aspects of broadcast communication characterised by the use of a return channel, e.g. for collecting users' opinions, for returning broadcast space/time information or for requesting data
- H04H2201/37—Aspects of broadcast communication characterised by the use of a return channel, e.g. for collecting users' opinions, for returning broadcast space/time information or for requesting data via a different channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
- H04N21/2402—Monitoring of the downstream path of the transmission network, e.g. bandwidth available
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
- H04N21/2408—Monitoring of the upstream path of the transmission network, e.g. client requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
- H04N21/26216—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving the channel capacity, e.g. network bandwidth
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64723—Monitoring of network processes or resources, e.g. monitoring of network load
- H04N21/64738—Monitoring network characteristics, e.g. bandwidth, congestion level
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
Definitions
- the present invention relates to data communication technology for distributing the same data to a plurality of terminals by a communication system.
- a wireless communication system that covers a communication area with a cell configured by a wireless base station
- communication of a wide range of wireless terminals is enabled by arranging a plurality of cells.
- WiMAX Worldwide Interoperability for Microwave Access
- communication in various places becomes possible by covering a communication area with a small cell called a femtocell.
- this type of wireless communication system there is a communication mode in which program data is broadcasted to a plurality of wireless terminals (see Japanese Patent Application Publication No. 2005-516474 and Japanese Patent Application Publication No. 2007-174645).
- Data of a program is broadcasted by a wireless channel defined in a band available in the wireless communication system.
- the user can view the program by receiving data of a wireless channel on which the program is being broadcast by the wireless terminal.
- a wireless terminal for viewing this type of broadcast a stationary terminal such as a home radio or a television and a mobile terminal that can be carried are generally used.
- wireless resources are limited. Also, since the wireless channel is also used for point-to-point calls, the wireless bandwidth that can be used to broadcast programs is further limited.
- Japanese Patent Application Laid-Open No. 2001-313922 discloses a technology for selecting a program to be broadcast, incorporating the intention of the user. However, this does not reflect the intention of the user in real time in the selection of the program to be broadcast. Also, there may be cases where the program is not broadcast at all because there are fewer viewing requests for one program compared to other programs. Although there is a user who wants to watch a program, there may be a disadvantage that the user can not watch the desired program at all.
- Japanese Patent Laid-Open No. 2003-333571 describes a technique for compressing content data distributed over a network in consideration of the content of the content and the preference of the user. Further, Japanese Patent Application Laid-Open No. 2002-351438 discloses a technique for controlling the video size and the image quality of the video information to be distributed and the frame rate. However, the configuration disclosed in these documents is not a configuration in consideration of 1: N broadcast.
- An object of the present invention is to provide a technology that enables a user's desire to be appropriately reflected in the broadcast of a program.
- a broadcast system of the present invention is a broadcast system which assigns a communication channel to a program and broadcasts data of the program to a terminal, A broadcasting apparatus for transmitting data of the program; A broadcast management apparatus that measures, as a score, the degree of a viewing request from a user of the terminal for the program transmitted from the broadcasting device, and determines the quality of service used for broadcasting the program based on the measured score
- a broadcast management apparatus is a broadcast management apparatus that manages a program to be broadcast by a broadcast system that assigns a communication channel to a program and broadcasts data of the program to a terminal, Score measuring means for measuring, as a score, the degree of viewing request from the user of the terminal for each of the programs that can be broadcast on the communication channel; Determining means for determining a service quality used for broadcasting the program based on the score measured by the score measuring means.
- a broadcasting method is a broadcasting method for assigning a communication channel to a program and broadcasting data of the program to a terminal. For each of the programs that can be broadcast on the communication channel, the degree of viewing request from the user of the terminal is measured as a score, Based on the score measured by the score measurement unit, the service quality used for broadcasting the program is determined.
- FIG. 7 is a diagram for explaining how the score of each program measured by the score measurement unit 23 changes depending on the state of the wireless terminal 15; It is a figure for demonstrating how a score changes, when the radio
- FIG. 7 is a diagram for explaining how the score of each program measured by the score measurement unit 23 changes depending on the state of the wireless terminal 15; It is a figure for demonstrating how a score changes, when the radio
- FIG. 6 is a diagram showing a format of a view request message sent from a wireless terminal 15; It is an example of the signal sequence between a radio
- FIG. 23 is a diagram showing an example of status display by the wireless terminal 15 when changing from the score status shown in FIG. 21 to the score status shown in FIG. 22. It is a figure which shows the mode of the change of the program broadcasted on a radio channel. It is a figure for demonstrating the mode of the switching of a program at the time of applying the protection with respect to time. It is a figure for demonstrating the mode of the switching of a program at the time of applying protection with respect to a score. It is a figure for demonstrating a mode that the switch of a program did not occur by having applied protection with respect to time.
- FIG. 1 is a block diagram showing the configuration of a broadcast system according to the present embodiment.
- the broadcast system includes a base station apparatus 11, a gateway apparatus 12, a broadcast apparatus 13, and a broadcast management apparatus 14.
- the base station apparatus 11 and the gateway apparatus 12 constitute a wireless access network 16.
- the base station apparatus 11 transmits and receives data to and from the wireless terminal 15 through a wireless channel.
- the broadcast system of this embodiment supports not only point-to-point two-way communication represented by voice communication, but also broadcast-type communication in which program data is broadcast from the base station apparatus 11 to a plurality of wireless terminals 15 Do.
- the broadcast device 13 and the broadcast management device 14 are devices for realizing a broadcast of a program.
- the broadcast device 13 outputs program data.
- the data output from the broadcasting device 13 is sent to the base station device 11 via a network (not shown) and the gateway device 12 as an example.
- Data of a program is broadcast from the base station apparatus 11 to the wireless terminal 15 via a wireless channel, but since the wireless band between the base station apparatus 11 and the wireless terminal 15 is limited, all programs are sufficient here. It is assumed that a radio channel of transmission rate can not be assigned. Therefore, the service quality of each program is determined based on the result of aggregating viewing requests from the user, and the base station apparatus 11 broadcasts program data at a transmission rate corresponding to the service quality. At that time, it may be the broadcasting apparatus 13 or the base station apparatus 11 that adapts the data of the program to the determined quality of service. As an example, the broadcasting device 13 transmits data of a program to the gateway device 12 with the determined quality of service.
- the base station apparatus 11 converts data of a program received from the broadcasting apparatus 13 so as to meet the determined quality of service.
- the service quality for example, a plurality of levels are defined by the resolution of the image, the number of frames per unit time of the video, or both, and it is selected as to which level of service quality each program is set. You should do it.
- the wireless terminal 15 is a device that realizes communication desired by the user by transmitting and receiving data via the base station device 11. With regard to broadcast of a program, the wireless terminal 15 can select a program desired by the user from among a plurality of programs broadcasted on the wireless channel from the base station device 11, and can receive data of the program. This allows the user to view a desired program.
- the wireless terminal 15 is a program selected by the user from among the program broadcast on the wireless channel from the base station apparatus 11 and the program that is not actually broadcast but can be broadcasted.
- a viewing request message carrying request information indicating a program desired to be viewed is sent to the broadcast management device 14 via the base station device 11.
- a viewing request message may be sent when the wireless terminal 15 enters a coverage area of a certain base station apparatus 11 while viewing a program, or when the wireless terminal 15 comes out of that area.
- the broadcast management device 14 determines a program to be actually broadcast on the wireless channel from among the programs output from the plurality of broadcasting devices 13 and also determines the quality of service of the program to be broadcast. The determination content by the broadcast management device 14 is notified to the base station device 11 via a network (not shown) and the gateway device 12. Further, when the broadcast device 13 adapts the data of the program to the determined service quality, the determined content by the broadcast management device 14 is also notified to the broadcast device 13.
- the broadcast management device 14 In order to determine the service quality of each program, the broadcast management device 14 always manages the program output from the broadcast device 13 and, based on the request information notified from the wireless terminal 15 by the viewing request message, For each program, it is measured as a score how much there is a request for viewing.
- the viewing request may include which program is being viewed, or may include a program that is not viewed but is desired to be viewed. Then, the broadcast management device 14 determines the quality of service to be used for the broadcast of each program according to the score of each program.
- good service quality may be set to each program in descending order of score. If there is a difference between the quality of service determined based on the score and the quality of service applied to the broadcast at that time, the quality of service of the program will be changed. Programs for which good service quality has been set will have good image quality.
- the service quality changes with excessive frequency due to the simple comparison of the score, the user suffers a disadvantage, so protection may be made to reduce the frequency of changing the service quality. For example, if the score of programs to which low quality of service is applied exceeds the score of programs to which high quality of service is applied plus a predetermined protection value, the quality of service of those programs is changed. May be In addition, when the state in which the score satisfies the predetermined condition for changing the service quality continues for the predetermined protection time or more, the service quality of the program may be changed.
- the gateway device 12 is a gateway for connecting each base station device 11 to a network (not shown).
- the base station apparatus 11 is an apparatus that transmits and receives data to and from the wireless terminal 15 through a wireless channel. As shown in FIG. 2, by covering the communication area with cells of a plurality of base station apparatuses 11, communication by the wireless terminal 15 becomes possible at various places. For a broadcast program, the base station apparatus 11 broadcasts data of the program on a wireless channel of a transmission rate corresponding to the quality of service determined by the broadcast management apparatus 14.
- the gateway device 12 manages the assignment of the wireless channel of each base station device 11, and may assign the wireless channel to the broadcast program from the broadcast device 13 according to the determination of the broadcast management device 14. In that case, the base station device 11 may broadcast the program data on the wireless channel according to the assignment by the gateway device 12.
- FIG. 3 is a flowchart showing a process of updating a broadcast program by the broadcast system of the present embodiment.
- the broadcast management device 14 of the broadcast system measures the score of each program based on the request information notified from the wireless terminal 15 (step 101).
- FIG. 4 is a table showing the state of each program. This table shows an example of the score measurement result of each program.
- four programs of CH 1 to 4 are output from the broadcasting device 13.
- the broadcast of CH1 is a baseball broadcast and has a score of "20".
- the broadcast of CH2 is a soccer broadcast with a score of "10".
- the broadcast of CH3 is a tennis relay and has a score of "8".
- the broadcast of CH4 is a wrestling relay, and the score is "15".
- the broadcast management device 14 determines which program to broadcast and the quality of service of each program to be broadcast based on the score of each program (step 102). If there is a change in one or both of the broadcast program and the service quality (YES in step 103), the broadcast management apparatus 14 instructs that effect to the gateway apparatus 12 to update the broadcast program or the service quality (step 104). If there is no change (NO in step 103), the process ends.
- the wireless band that can be used to broadcast a program is a wireless band that can only broadcast three programs with a predetermined quality of service (hereinafter referred to as "basic rate"). Therefore, the programs of CH1 and CH4 are broadcasted at the basic rate, and the programs of CH2 and CH3 are broadcasted at the quality of service (hereinafter referred to as "1/2 rate") using the radio band of 1/2 of the basic rate. There is. Because the score is not reversed, the quality of service for each program is not changed.
- FIG. 5 is a block diagram showing the configuration of the broadcast management device 14 of the present embodiment.
- the broadcast management device 14 includes a program management unit 21, a band management unit 22, a score measurement unit 23, a determination unit 24, and a notification unit 25.
- the program management unit 21 manages information (broadcast information) of a program output from the broadcasting device 13.
- the broadcast information includes, for example, a broadcast schedule of a program. You can know the start time and end time of each program.
- the band management unit 22 manages a program radio band that can be used to broadcast a program.
- the program radio band may be a fixed value, or may be a value that changes depending on the radio channel assignment in the base station apparatus 11.
- the score measurement unit 23 measures the score of each program output from the broadcast device 13. The score of each program is counted based on the request information notified from the wireless terminal 15.
- the actual viewing is considered as a viewing request, and when a user starts viewing, or when the wireless terminal 15 being viewed enters the area, the score is incremented by one. You should do it. Also, for example, the score may be decremented by one when a user finishes viewing or when the wireless terminal 15 currently viewing is out of the area.
- the score may be incremented by 1 when a certain user performs an operation to request viewing. Further, the score may be decremented by one when the user who has requested viewing has canceled the viewing request or when requesting viewing of another program.
- the determination unit 24 determines which program is to be broadcast and the service quality of each program to be broadcast based on the score of each program so that the total of the transmission rates of the programs to be broadcast falls within the program radio band. . At that time, the determination unit 24 may determine the service quality of each program so that all programs can be broadcast, or may not broadcast a program with a low score. Not broadcasting is equal to setting the quality of service to zero transmission rate.
- the quality of service of each program may be a simple score comparison, or may be protected by applying the number of protection for the score or the protection time for switching timing.
- the notification unit 25 notifies the base station apparatus 11 or the gateway apparatus 12 to that effect when the determination section 24 determines to change the broadcast program or the service quality of each program.
- FIG. 6 is a diagram for explaining how the score of each program measured by the score measurement unit 23 changes depending on the state of the wireless terminal 15.
- states of the wireless terminal 15 there are a state in which a program is being viewed and a state in which the program is not viewed, and a state in which a program is requested in each state and a state in which a program is not requested.
- the above state will be called as follows for simplification of the explanation. That is, the state in which the program is being viewed is referred to as "viewing”, and the state in which the program is not viewed is referred to as "not viewing”. Further, a state in which another program is requested is referred to as "on request”, and a state in which another program is not requested is referred to as "non-requesting".
- Non-viewed and not requested a state in which a program is neither viewed nor requested
- not-viewed and requested a state in which a program is not viewed but requested
- viewing and not requesting A state in which a user is viewing a program and not requesting another program
- a condition in which a program is being viewed but another program is being requested is "viewing Medium and on demand.
- the score is not counted when the wireless terminal 15 is not viewing and not requesting.
- the score of the viewed program is incremented by one. This is a state where the user has started to watch the program.
- the wireless terminal 15 when the wireless terminal 15 is in the non-viewing and non-requesting state from the viewing and non-requesting state, the score of the program being viewed is decremented by one. This is a state in which viewing is stopped without requesting a program.
- the wireless terminal 15 when the wireless terminal 15 is changed from the non-viewing and non-requesting state to the non-viewing and requesting state, the score of the requested program is incremented by one. This is a condition caused by the user looking at the terminal display described later and requesting a program that he / she wants to watch.
- the wireless terminal 15 when the wireless terminal 15 is changed from the non-viewing and requesting state to the non-viewing and non-requesting state, the score of the requested program is counted down by one. This is a condition caused by the user giving up to watch the program he wanted to watch.
- the wireless terminal 15 when the wireless terminal 15 is in the viewing and non-requesting state and is in the viewing and requesting state, the score of the program being watched is counted down by 1 and the score of the requested program is incremented by 1 Ru. This is a condition caused by the user thinking that he wants to watch another program. In this case, the currently watched program is viewed for convenience, but the score of the program being watched is counted down in that the user does not really want it.
- the wireless terminal 15 when the wireless terminal 15 is in the state of viewing and requesting and is in the state of viewing and not requesting, the score of the program being watched is incremented by 1 and the score of the requested program is decremented by 1 Be done.
- the program desired to be viewed is reconsidered to be the program currently being viewed.
- the score of the program being viewed and the score of the requested program also do not change. This is a state in which the user has watched a program other than the desired program, but since the requested program has not started, he / she has not stopped watching the program currently being watched. At this time, the score does not change because the program requested by the user does not change.
- the score of the requested program is equal to the score of the program being viewed, and the score does not change. This is because the user looks at the terminal display described later and notices that it has become possible to view the program requested by itself, or the program requested by the internal mechanism of the wireless terminal 15 can be viewed. It is a state caused by the fact that it has been detected and moved from non-viewing to viewing. At this time, since the program which the user wants to view does not change, the score does not change.
- the score of the program for which the request has been canceled is counted down by one, and the score of the newly requested program is counted up by one.
- the score of the program for which the request has been canceled is counted down by one, and the score of the newly requested program is counted up by one. .
- FIG. 7 is a diagram for explaining how the score changes when the wireless terminal 15 moves between areas.
- arrows indicate state transitions as the wireless terminal 15 moves between areas.
- the score of the program in each area of a movement origin and a movement destination is an independent thing.
- the score of the program requested in the area of the movement source is counted down as the wireless terminal 15 escapes.
- the score of the program requested in the area of the movement source may be counted up when the wireless terminal 15 enters, or the program is not defined in the area of the movement destination Program scores may not be counted up.
- the wireless terminal 15 moves from the area 1 to the area 2, and the state of the wireless terminal 15 in the area 1 is non-viewing and non-requesting, non-viewing and requesting, viewing and non-requesting, and viewing And it demonstrates as four states in the other program request
- the wireless terminal 15 not viewing and requesting in the area 1 enters the area 2, it can transition to two states. That is, two being non-viewing and non-requesting, or non-viewing and being requested.
- the reason for not being viewed in area 2 and not being requested is that the program requested in area 1 can not be broadcasted in area 2.
- the score of the program requested in area 1 is counted down, and in area 2 the score of the program is not counted up. If the area 2 is not being viewed and requested as in the area 1, the score of the program requested in the area 1 is counted down, and in the area 2, the score of the same program is counted up.
- the wireless terminal 15 viewing and not requesting in the area 1 When the wireless terminal 15 viewing and not requesting in the area 1 enters the area 2, it can transition to three states. That is, three being non-viewing and non-requesting, non-viewing and requesting, or viewing and non-requesting.
- the reason for not being viewed in area 2 and not being requested is that the program being viewed in area 1 can not be requested because it is neither broadcast nor broadcastable in area 2. In this case, the score of the program viewed in area 1 is counted down, and the score of the program is not counted up in area 2.
- the reason why the program is not being viewed and requested in area 2 is that the program being viewed in area 1 can not be broadcasted in area 2 but can be broadcasted because it can be broadcasted.
- the score of the program viewed in area 1 is counted down, and the score is counted up, assuming that the same program is requested in area 2.
- the reason why the user is viewing and not requesting in the area 2 is that the same program as the area 1 can be viewed in the area 2 as well.
- the score of the program viewed in area 1 is counted down, and in area 2, the score of the same program is counted up.
- a terminal being viewed and requested in area 1 When a terminal being viewed and requested in area 1 enters area 2, it can transition to four states. That is, four being non-viewing and non-requesting, non-viewing and non-requesting, viewing and non-requesting, or viewing and non-requesting.
- the reason for not being viewed in area 2 and not being requested is that the program being viewed in area 1 can not be requested because it is neither broadcast nor broadcastable in area 2. In this case, the score of the program requested in area 1 is counted down, and in area 2 the score of the program is not counted up.
- the reason why the program is not being viewed and requested in area 2 is that the program viewed in area 1 was not being broadcast in area 2 but the program requested in area 1 was available for broadcast. It is because it can be continued.
- the score of the program requested in area 1 is counted down, and the score is counted up on the assumption that the same program is requested in area 2.
- the reason for viewing and not requesting in area 2 is that the program being viewed in area 1 was being broadcast in area 2 but the program being requested was not broadcastable.
- the score of the program requested in area 1 is counted down, and in area 2, the score is counted up as the program being viewed is requested.
- the program being viewed in area 1 is not being broadcast in area 2 but the program being requested can be broadcast, There is one that is made to watch the requested program.
- the score of the program requested in area 1 is counted down, and in area 2 the score of the program is not counted up.
- the degree to which a plurality of programs are viewed or the degree to which a request for viewing is requested is measured as a score, and each score is measured based on the score. Update the service quality of the show. Therefore, it is possible to effectively use the limited wireless band, broadcast programs with relatively low request from the user, and broadcast high request programs with high quality of service.
- the score of each program measured by the broadcast management apparatus 14 may be notified to the wireless terminal 15 via the wireless access network 16 as broadcast information.
- the notification unit 25 may notify the measurement result of the score measurement unit 23 by broadcast, for example. If the wireless terminal 15 displays the state of each program on the screen based on the notification information, the user can know the program being watched by the user and the state of the program requested to be watched.
- the state of the program may be information including a schedule of start and end of the broadcast, or may be the score of the program itself.
- the broadcast management apparatus 14 is disposed outside the wireless access network 16, and the decision is notified to the wireless access network 16 from there.
- the present invention is not limited to this.
- the broadcast management device 14 may be incorporated in the gateway device 12 or the base station device 11.
- the broadcast device 13 and the broadcast management device 14 have been described as separate devices, but the present invention is not limited to this.
- the broadcast device 13 and the broadcast management device 14 may be integrally configured.
- the broadcast system of this embodiment has a configuration as shown in FIG. 1, and as shown in FIG. 2, a plurality of base station apparatuses 11 are arranged.
- FIG. 8 is a diagram showing the format of a view request message sent from the wireless terminal 15.
- the view request message has a format in which a view channel (view channel) and a request channel (request channel) can be notified as notification information together with a terminal ID (Identifier).
- a viewing request message from the wireless terminal 15 notifies the user of the wireless terminal 15 of the viewing status and the request status of the program.
- the contents of the view request message include, for example, the following patterns.
- FIG. 9 is an example of a signal sequence between the wireless terminal and the base station apparatus when the user updates the request ch.
- the request channel is updated as specified or canceled.
- a viewing channel and a request channel are notified in response to a request operation to the wireless terminal 15 by the user. This notification is notified by the view request message shown in FIG.
- the user may request a program different from the program currently being viewed, cancel the request for the currently requested program, or request no program. There are cases. If no program is requested, it can be considered as requesting a program being watched.
- FIG. 10 is an example of a signal sequence between the wireless terminal and the base station apparatus when the wireless terminal in the state of watching a certain broadcast program enters the coverage area of the base station apparatus. The same sequence applies to the case where a wireless terminal in a state of not viewing a broadcast program starts viewing of a certain broadcast program.
- the radio terminals # 1 to # 3 notify the viewing channel and the request channel. The notification of the viewing channel and the request channel is transferred in the viewing request message shown in FIG.
- the wireless terminal 15 When the wireless terminal 15 enters the coverage area from the outside of the coverage area of a certain base station apparatus 11, the channel of the program currently being viewed is reported as the viewing channel, and the channel of the currently requested program is reported as the requested channel. Be done. Even if the user does not perform any operation on the wireless terminal 15, the wireless terminal 15 automatically sends a view request message.
- the coverage area of the base station apparatus 11 to which a program in a state requested by the user has not entered is broadcasted within the coverage area of the base station apparatus 11 where the wireless terminal 15 was previously located. Then, when broadcasting, the wireless terminal 15 may switch the viewing channel automatically. In addition, the wireless terminal 15 may notify the user that display of the requested program has become possible by displaying, outputting sound, or ringing. By this, the user can automatically start watching a desired broadcast program without being aware of the movement between the base station apparatuses 11.
- the wireless terminal 15 selects the received program and the wireless terminal 15 enters the receiving operation simultaneously or after a predetermined time, Transfer a message notifying you of the viewing channel and the requested channel.
- FIG. 11 shows a signal sequence when the system side requests the wireless terminal in the coverage area of the base station apparatus to collect information on viewing channels and request channels.
- the simultaneous request message is sent from the base station apparatus 11 using the common channel that can be received by each wireless terminal 15, and the wireless terminals # 1 to # 3 respond accordingly to the base station apparatus for viewing channels and request channels. 11, and transmits to the broadcast management apparatus 14.
- the wireless terminals 15 in the coverage area of the base station apparatus 11 are divided into several groups.
- the group request message may be sent out at different times for each group.
- FIG. 12 shows an example of a program viewing and request situation by each wireless terminal within the coverage area of the base station apparatus at a certain time.
- channels 1-4 there are four types of programs that can be broadcasted within the coverage area of the base station apparatus 11.
- the programs currently being broadcast are channel 1 and channel 4 and the programs not being broadcast are channel 2 and channel 3.
- FIG. 13 is a diagram schematically showing the situation of FIG. In the figure, the four broadcastable programs are shown by frames # 1 to # 4.
- the solid frame indicates the program currently being broadcast, and the dashed frame indicates the program not being broadcast.
- # 1 and # 4 are on the air, and # 2 and # 3 are not on the air.
- FIG. 14 is a diagram showing a state after a predetermined time has elapsed from the state of FIG.
- the number of wireless terminals 15 that are viewing the # 4 program and not requesting another program is reduced to 13. Also, the number of wireless terminals 15 that are viewing the # 4 program and requesting the # 2 program is increasing to four.
- FIG. 15 is a diagram showing the state shown in FIG. 13 in the form of a table.
- FIG. 16 is a table in which the table of FIG. 15 is rearranged.
- the program # 1 is viewed and requested by nineteen wireless terminals 15. Also, the program of # 1 is requested from the two wireless terminals 15 viewing the program of # 4.
- the program of # 2 is requested from the three wireless terminals 15 viewing the program of # 1, and the two wireless terminals 15 viewing the program of # 4 is requested, and neither program is viewed It is requested from five wireless terminals 15.
- the program of # 3 is requested from the three wireless terminals 15 viewing the program of # 1, and the three wireless terminals 15 viewing the program of # 4 is requested, and none of the programs are viewed It is requested from seven wireless terminals 15.
- the program # 4 is viewed and requested by the 17 wireless terminals 15. Also, the program of # 4 is requested from one wireless terminal 15 that is viewing the program of # 1.
- FIG. 17 is a diagram showing the state shown in FIG. 13 in the form of a table.
- FIG. 18 is a table in which the table of FIG. 17 is rearranged.
- the program # 1 is viewed and requested by nineteen wireless terminals 15. Also, the program of # 1 is requested from the two wireless terminals 15 viewing the program of # 4.
- the program of # 2 is requested from the five wireless terminals 15 viewing the program of # 1, and the four wireless terminals 15 viewing the program of # 4 is requested, and none of the programs are viewed It is requested from eight wireless terminals 15.
- the program of # 3 is requested from the three wireless terminals 15 viewing the program of # 1, and the three wireless terminals 15 viewing the program of # 4 is requested, and none of the programs are viewed It is requested from seven wireless terminals 15.
- the program # 4 is viewed and requested by the thirteen wireless terminals 15. Also, the program of # 4 is requested from one wireless terminal 15 that is viewing the program of # 1.
- the score of each program is calculated by equation (1).
- (Score) (number of viewings) + (number of requests required)-(number of other channel requests) (1)
- the number of viewings is the number of wireless terminals 15 actually viewing the program.
- the requested number is the number of wireless terminals 15 requesting the program.
- the other channel series is the number of wireless terminals 15 that are viewing the program and requesting another program.
- This score is an index indicating which program is desired to be viewed regardless of whether the user of the wireless terminal 15 is actually viewing. By selecting a program based on this score, it becomes possible to select and broadcast the program that is truly required.
- FIG. 19 is a diagram for explaining the process of calculating the score of each program in the state of FIG. 13 (and FIGS. 15 and 16).
- FIG. 20 is a diagram for explaining the process of calculating the score of each program in the state of FIG. 14 (and FIGS. 17 and 18).
- FIG. 21 is a table showing the score of each program in the state of FIG.
- FIG. 22 is a table showing the score of each program in the state of FIG.
- the number of viewings is a value obtained by vertically integrating the number of reports in FIG.
- the requested number is the number of reports shown in FIG. 16 excluding the report from the wireless terminal 15 viewing the program from the report requesting the program.
- the number of other channel requests is the number of reports requesting the other program among the reports from the wireless terminal 15 viewing the program shown in FIG.
- the score calculated by Equation (1) indicates how many users of each wireless terminal 15 are requested to view each program.
- the broadcast management apparatus 14 selects a program to be broadcasted on a wireless channel in order from the program for which viewing is requested by the largest number of users.
- the broadcast management device 14 makes the display quality of the video of each program different according to the score of each program.
- a plurality of types of wireless channels having different attributes are prepared, and a wireless channel corresponding to the display quality determined by the score is assigned to each program.
- a basic rate channel and a partial rate channel are prepared as wireless channels for delivering program content.
- the information rate of the partial rate channel is lower than the information rate of the basic rate channel.
- 23 to 25 are diagrams for explaining an example of the configuration of a wireless channel in the present embodiment.
- radio band By dividing the radio band in frequency and / or time or both, radio channels with different information transfer rates are formed.
- the wireless channel having the basic information transfer rate is the basic rate channel.
- a radio channel having an information transfer rate obtained by dividing the band of the basic rate channel is a partial rate channel or a sub rate channel.
- a radio channel having an information transfer rate of 1 ⁇ 2 of the basic rate channel is a 1 ⁇ 2 rate channel
- a radio channel having an information transfer rate of 1 ⁇ 4 of the basic rate channel is 1 ⁇ 4. It is a rate channel.
- a radio channel having a frequency width of 1 MHz is a basic rate channel.
- CH1 is a basic rate channel.
- the wireless channel of CH1 has a constant information transfer rate, for example, an information transfer rate of 1 Mbps.
- a partial rate channel having a frequency width of 0.5 MHz, which is a half frequency width of 1 MHz, is a 1 ⁇ 2 rate channel.
- CH2 is a 1/2 rate channel.
- a partial rate channel having a width of 0.25 MHz, which is a frequency of one fourth of 1 MHz, is a quarter rate channel.
- CH3 and CH4 are 1/4 rate channels.
- the information transfer rate of CH2 is half of that of CH1, that is, 0.5 Mbps. Also, the information transfer rate of CH3 and CH4 is a quarter of the information transfer rate of CH1, that is, 0.25 Mbps.
- one basic rate channel is divided into one half rate channel and two quarter rate channels, but it may be divided into two half rate channels, or four 1 It can be divided into four rate channels.
- a narrow radio channel is formed by dividing the radio channel along the time axis.
- a wireless channel having a frequency band of 1 MHz is a basic rate channel.
- CH1 is a basic rate channel.
- the wireless channel of CH1 has a constant information transfer rate, for example, an information transfer rate of 1 Mbps.
- a partial rate channel having a time share of one half of the basic rate channel is a half rate channel.
- CH2 is a 1/2 rate channel.
- a partial rate channel having a time share of one fourth of the basic rate channel is a quarter rate channel.
- CH3 and CH4 are quarter rate channels.
- the information transfer rate of CH2 is half of the information transfer rate of CH1, that is, 0.5 Mbps. Also, the information transfer rate of CH3 and CH4 is a quarter of the information transfer rate of CH1, that is, 0.25 Mbps.
- a narrow radio channel is formed by dividing the radio channel by the frequency axis and the time axis.
- a wireless channel having a frequency band of 1 MHz is a basic rate channel.
- CH1 is a basic rate channel.
- the wireless channel of CH1 has a constant information transfer rate, for example, an information transfer rate of 1 Mbps.
- partial rate channels having a half frequency width and a half time occupancy of the basic rate channel are CH2 and CH3.
- a partial rate channel having a frequency width of one half of the basic rate channel and a time occupancy of one fourth is CH4 to CH7.
- the information transfer rate of CH2 and CH3 is one eighth of the information transfer rate of CH1, that is, 0.125 Mbps. Also, the information transfer rate of CH4 to CH7 is one sixteenth of the information transfer rate of CH1, that is, 0.0625 Mbps.
- FIG. 26 is a diagram for describing service quality for each wireless channel.
- the quality of service of the basic rate channel has a resolution of 480 ⁇ 640 pixels, and the number of frames per second is 24.
- CH1 is a basic rate channel.
- the resolution of CH2 is the same as that of CH1, and the number of frames per second is one half of that of CH1, ie, 12 frames.
- the resolution of CH3 is the same as that of CH1, and the number of frames per second is one fourth of CH1, that is, six frames.
- the resolution of CH4 is one-fourth that of CH1, that is, 240 ⁇ 320 pixels, and the number of frames per second is 24 as the same as CH1.
- CH5 The resolution of CH5 is the same as that of CH4, and the number of frames per second is one half of that of CH1, that is, 12 frames.
- CH6 is 240 ⁇ 320 pixels, which has the same resolution as CH4, and the number of frames per second is one fourth of CH1, that is, six frames.
- the video quality of CH2 is half that of CH1. Also, the video quality of CH3 and CH4 is a quarter of that of CH1. Also, the video quality of CH5 is one eighth of the video quality of CH1, and the video quality of CH6 is one sixteenth of the video quality of CH1.
- the broadcast management device 14 updates the display quality of each program according to the score of each program, and the base station device 11 uses the wireless channel of the information transfer rate corresponding to the display quality. Broadcast the data of Therefore, it is possible to effectively use the limited wireless band so that programs with relatively low demand from users can be broadcast with low display quality, and wireless so that high demand programs can be broadcast with high display quality. Channel assignments can be updated.
- each program has a score as shown in FIG. 21 and the program radio band that can be used to broadcast the program is for three basic rate channels, for example, two programs with high scores are used. Broadcast on the rate channel and the remaining two programs may be broadcast on the half rate channel.
- FIG. 27 is a diagram showing an example of the status display by the wireless terminal 15 in the score status shown in FIG.
- display quality status
- program content program
- score score
- Req request status
- the display quality of CH1 and CH4 is "Full Viewing”. “Full Viewing” indicates that the display quality corresponds to the basic rate channel.
- the display quality of CH2 and CH3 is "Half Viewing”. "Half Viewing” indicates that the display quality is equivalent to a 1/2 rate channel.
- the user can know the display quality of each program by looking at this status display.
- the score of CH1 is 21, the score of CH2 is 10, the score of CH3 is 13 and the score of CH4 is 18. Also, CH2 is required.
- FIG. 28 is a diagram showing another example of the status display by the wireless terminal 15 in the score status shown in FIG.
- the display quality, the score, and the request state are displayed as the state of each program superimposed on the video of each program of CH1 to CH4.
- the display quality of CH1 and CH4 is "Full".
- “Full” indicates that the display quality corresponds to the basic rate channel.
- the display quality of CH2 and CH3 is "Half".
- “Half" indicates that the display quality is equivalent to a 1/2 rate channel.
- the user can know the display quality of each program by looking at this status display.
- the score of CH1 is 21, the score of CH2 is 10, the score of CH3 is 13 and the score of CH4 is 18. Also, CH2 is required.
- FIG. 29 is a diagram showing an example of status display by the wireless terminal 15 when the score status shown in FIG. 21 changes to the score status shown in FIG.
- the display quality of CH1 is "Full Viewing" and the display quality of CH3 is "Half Viewing". These are the same as the status display of FIG.
- the scores of CH2 and CH4 are reversed from FIG. 21 to FIG. 22, and the score of CH2 surpasses the score of CH4. Therefore, in FIG. 29, it is predicted that the display quality of the programs of CH2 and CH4 is changed. That is, the display quality of CH2 is "Change to Full", and the display quality of CH4 is "Change to Half".
- “Change to Full” is a notice of a change to display quality corresponding to the basic rate channel.
- “Change to Half” is a notice of a change to display quality corresponding to a 1/2 rate channel. By looking at this display, the user can know what display quality each program is about to change.
- FIG. 30 is a diagram showing how the display quality of a program broadcasted on a wireless channel is changed.
- the vertical axis represents the score
- the horizontal axis represents the time transition.
- the broken line indicates the score of each program.
- the score of program 1 is superior to that of program 2.
- the scores of program 1 and program 2 become equal, and thereafter, the score of program 2 exceeds that of program 1.
- program 1 is broadcasted on the basic rate channel (Full Rate)
- program 2 is broadcasted on the 1 ⁇ 2 rate channel (Half Rate).
- program 1 is 1 ⁇ 2 rate
- program 2 has been changed to the basic rate channel.
- protection may be applied to prevent frequent switching.
- FIG. 31 is a diagram for explaining how the display quality of the program is changed when the protection with respect to time is applied.
- the time transition of the scores of program 1 and program 2 is the same as in FIG. However, in this example, the point in time when the score of program 2 exceeds the score of program 1 continues only for the protection time (time tx) (t2), not when the scores of program 1 and program 2 reverse (t1)
- the program display quality has been changed at.
- the time tx can be set arbitrarily.
- FIG. 32 is a diagram for explaining how the display quality of the program is changed when the protection against the score is applied.
- the time transition of the scores of program 1 and program 2 is the same as in FIG.
- the display of the program is not performed when the scores of program 1 and program 2 are reversed (t1) but when the score of program 2 exceeds the score of program 1 by the protection value (increment vx) Quality changes have been made.
- the increment vx can be set arbitrarily.
- FIG. 33 is a diagram for explaining how the display quality of the program is not changed by applying the protection with respect to time. It is assumed that the protection against time as described in FIG. 31 is applied to the change of the display quality of the program. Referring to FIG. 33, the scores of program 1 and program 2 are reversed at time t1. However, at time t2 before time tx from time t1, the scores of program 1 and program 2 are reversed again. Therefore, the display quality of the program broadcasted on the wireless channel is not changed.
- the present invention is not limited to this composition.
- the present invention can also be applied to a broadcast system using a wired line. That is, the present invention can be applied to a broadcast system in which the wireless access network 16 is a wired access network and broadcast data between terminals are transmitted using a wired line.
- a communication channel used to transmit broadcast information including broadcast content data and each program score, and a communication channel used to transmit individual individual information to a terminal including a request from the terminal and a response thereto. are not required to be identical, and a wired communication channel and a wireless communication channel can be used arbitrarily. Specifically, communication channels can be used properly according to the following pattern.
- a wireless channel is used both for the transfer of broadcast content and broadcast information and for the transfer of individual information.
- a wireless channel is used to transfer broadcast content and broadcast information, and a wired channel is used to transfer individual information.
- a wired channel is used to transfer broadcast content and broadcast information, and a wired channel is used to transfer individual information.
- a wired channel is used to transfer broadcast content and broadcast information, and a wireless channel is used to transfer individual information.
- a wired channel is used to transfer broadcast content and broadcast information, and a wireless channel is used to transfer individual information.
- the data of the program content distributed from the broadcasting device 13 and the broadcast information be transmitted by the same type of channel since they have high multicast.
- the request from the terminal and the response to it are highly individual, they may not be transferred in the same type of channel as the program content.
- a terminal (television) installed in a home receives terrestrial digital broadcasting, and the viewer's request is summed up to be reflected in the selection of a broadcast program.
- a terminal television
- request information sent to the broadcast management apparatus 14 is transmitted by wired channel of a wired network (not shown) Good.
- FIG. 34 is a diagram showing an example of signal transfer when using a wireless channel for both transfer of broadcast content and broadcast information and transfer of individual information. This corresponds to the above (1).
- solid arrows represent signal transfer by the wired channel
- broken arrows represent signal transfer by the wireless channel.
- a wireless channel is used as a broadcast / broadcast information channel (common channel) for transferring broadcast content and broadcast information having high multicast.
- a radio channel is also used as a channel for transferring individual information (individual channel) for transferring a highly personalized view request message and a response thereto.
- FIG. 35 is a view exemplifying a state of signal transfer when a wireless channel is used for transferring broadcast content and broadcast information and a wired channel is used for transferring individual information. This corresponds to the above (2). Also in this figure, solid arrows represent signal transfer by the wired channel, and broken arrows represent signal transfer by the wireless channel.
- a wireless channel is used as a broadcast / broadcast information channel for transferring broadcast content and broadcast information having high multicast.
- a wired channel is also used as a channel for transferring individual information to transfer a highly unique viewing request message and a response thereto.
- the terminal of the present invention is not limited to the mobile terminal, and may be a terminal (fixed terminal) installed in a fixed manner regardless of wired or wireless.
- a terminal fixed terminal
- the same operation as the sequence shown in FIG. 10 is performed when powering on a terminal assumed to either the mobile terminal or the fixed terminal. It becomes.
- the present invention is not limited to only the embodiment, and the embodiment may be used in combination within the scope of the technical idea of the present invention. , And may change some configurations.
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Abstract
Description
前記番組のデータを送信する放送装置と、
前記放送装置から送信される前記番組について、前記端末のユーザからの視聴要求の程度をスコアとして計測し、計測された前記スコアに基づいて、前記番組の放送に用いるサービス品質を決定する放送管理装置と、
前記番組のサービス品質が前記放送管理装置によって決定されると、前記放送装置から受信した前記番組のデータを、該サービス品質に対応する伝送速度の通信チャネルで放送する通信アクセス網装置と、を有している。
前記通信チャネルで放送することのできる番組のそれぞれについて、前記端末のユーザからの視聴要求の程度をスコアとして計測するスコア計測手段と、
前記スコア計測手段で計測された前記スコアに基づいて、前記番組の放送に用いるサービス品質を決定する判定手段と、を有している。
前記通信チャネルで放送することのできる番組のそれぞれについて、前記端末のユーザからの視聴要求の程度をスコアとして計測し、
前記スコア計測手段で計測された前記スコアに基づいて、前記番組の放送に用いるサービス品質を決定する。
(1) ある放送番組を視聴中であり、かつその同じ放送番組を要求している場合;
視聴ch=“視聴ch”、要求ch=“無指定”または”視聴ch”
(2) ある放送を視聴中であり、かつ他の番組を要求している場合;
視聴ch=“視聴ch”、要求ch=“要求ch”
(3) 番組を視聴しておらず、かつ視聴の要求も無い場合;
視聴ch=“無指定”、要求ch=“無指定”
(4) 番組を視聴しておらず、かついずれかの番組の視聴を要求している場合;
視聴ch=“無指定”、要求ch=“要求ch”
図9は、ユーザが要求chを更新したときの無線端末と基地局装置の間の信号シーケンスの一例である。例えば、ユーザが非視聴状態から視聴状態に移ったり、要求チャンネルを変更したり、番組の視聴要求を解除したりすると、要求チャンネルが指定されたり、解除されたりというように更新される。図9を参照すると、ユーザによる無線端末15への要求操作を契機として、視聴チャンネルと要求チャンネルとが通知されている。この通知は、図8に示した視聴要求メッセージで通知される。
(スコア)=(視聴数)+(被要求数)-(他チャンネル要求数) (1)
視聴数とは、その番組を実際に視聴している無線端末15の個数である。被要求数とは、その番組を要求している無線端末15の個数である。他チャンネル用級数とは、その番組を視聴中でありかつ他の番組を要求している無線端末15の個数である。
(1) 放送コンテンツおよび報知情報の転送用と個別情報の転送用の両方に無線チャネルを用いる。
(2) 放送コンテンツおよび報知情報の転送用に無線チャネルを用い、個別情報の転送用に有線チャネルを用いる。
(3) 放送コンテンツおよび報知情報の転送用に有線チャネルを用い、個別情報の転送用に有線チャネルを用いる。
(4) 放送コンテンツおよび報知情報の転送用に有線チャネルを用い、個別情報の転送用に無線チャネルを用いる。
Claims (14)
- 番組に通信チャネルを割り当てて前記番組のデータを端末に対して放送する放送システムであって、
前記番組のデータを送信する放送装置と、
前記放送装置から送信される前記番組について、前記端末のユーザからの視聴要求の程度をスコアとして計測し、計測された前記スコアに基づいて、前記番組の放送に用いるサービス品質を決定する放送管理装置と、
前記番組のサービス品質が前記放送管理装置によって決定されると、前記放送装置から受信した前記番組のデータを、該サービス品質に対応する伝送速度の通信チャネルで放送する通信アクセス網装置と、を有する放送システム。 - 前記放送管理装置は、前記スコアが高いほど前記サービス品質が高くなるように、前記番組のそれぞれの放送に用いるサービス品質を決定する、請求項1に記載の放送システム。
- 前記放送管理装置は、放送する番組の伝送速度の合計が、番組の放送に使用することのできる帯域に収まるように、前記番組の放送に用いるサービス品質を決定する、請求項2に記載の放送システム。
- 前記放送管理装置は、放送可能な番組の中から放送する番組を選択するとともに、選択した該番組の放送に用いるサービス品質を決定する、請求項1から3のいずれか1項に記載の放送システム。
- 前記サービス品質は、画像の解像度と単位時間当たりのフレーム数のいずれかまたは両方によって規定される、請求項1から4のいずれか1項に記載の放送システム。
- 前記放送装置は、該番組のデータを、前記放送管理装置によって前記スコアに基づいて決められたサービス品質で前記通信アクセス網に送信する、請求項1から5のいずれか1項に記載の放送システム。
- 前記通信アクセス網装置は、前記放送装置から送信された前記番組のデータを、前記放送管理装置によって前記スコアに基づいて決められたサービス品質に適合させて、前記通信チャネルで放送する、請求項1から5のいずれか1項に記載の放送システム。
- ユーザによる番組に対する視聴要求を含む要求情報が前記端末から前記放送管理装置に通知され、
前記放送管理装置は、前記端末から通知された前記要求情報の視聴要求を集計した結果に基づいて、前記複数の番組のそれぞれについて前記スコアをカウントする、請求項1から7のいずれか1項に記載の放送システム。 - 前記放送管理装置は、ある番組のスコアが、該番組のサービス品質よりも高いサービス品質で放送されている他の番組のスコアに所定の保護値を加算した値を超えたら、前記番組および前記他の番組のサービス品質を変更すると判断する、請求項1から8のいずれか1項に記載の放送システム。
- 前記放送管理装置は、あるサービス品質で放送中の番組のスコアと、前記サービス品質と異なるサービス品質で放送中の他の番組のスコアとの比較結果が所定の条件を満たした状態が所定の保護時間以上継続したら、前記番組および前記他の番組のサービス品質を変更する、請求項1から9のいずれか1項に記載の放送システム。
- 番組に通信チャネルを割り当てて前記番組のデータを端末に対して放送する放送システムにて放送する番組を管理する放送管理装置であって、
前記通信チャネルで放送することのできる番組のそれぞれについて、前記端末のユーザからの視聴要求の程度をスコアとして計測するスコア計測手段と、
前記スコア計測手段で計測された前記スコアに基づいて、前記番組の放送に用いるサービス品質を決定する判定手段と、を有する放送管理装置。 - 前記判定手段は、前記スコアが高いほど前記サービス品質が高くなるように、前記番組のそれぞれの放送に用いるサービス品質を決定する、請求項11に記載の放送管理装置。
- 番組に通信チャネルを割り当てて前記番組のデータを端末に対して放送するための放送方法であって、
前記通信チャネルで放送することのできる番組のそれぞれについて、前記端末のユーザからの視聴要求の程度をスコアとして計測し、
前記スコア計測手段で計測された前記スコアに基づいて、前記番組の放送に用いるサービス品質を決定する、放送方法。 - 前記スコアが高いほど前記サービス品質が高くなるように、前記番組のそれぞれの放送に用いるサービス品質を決定する、請求項13に記載の放送方法。
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EP09766505A EP2296376A4 (en) | 2008-06-17 | 2009-05-22 | DIFFUSION SYSTEM, BROADCAST MANAGEMENT SYSTEM, AND BROADCAST METHOD |
JP2010517824A JP5585446B2 (ja) | 2008-06-17 | 2009-05-22 | 放送システム、放送管理装置、および放送方法 |
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CN102067621A (zh) | 2011-05-18 |
CN102067621B (zh) | 2013-06-19 |
JPWO2009154057A1 (ja) | 2011-11-24 |
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