JP2004356855A - Wireless network system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To preferentially ensure the quality of service to desired client equipment according to priority that a user desires even when many requests for traffic of high priority are sent to a home server. <P>SOLUTION: A wireless network system 10 is constituted of the home server 12 which plays a central role in a wireless LAN 11 and a plurality of client devices 13 which are connected to the wireless LAN 11. The home server 12 sets priority levels of traffic for each client device to perform priority control over the traffic according to a communication state. The priority of the traffic is set higher for a client device which handles a larger amount of data in more real time. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wireless network system, and more particularly, to a wireless network system capable of guaranteeing quality of service such as video distribution in a small network such as a home network.
[0002]
[Prior art]
Home networks based on wireless LANs have become widespread. In a home network, services are centrally managed by a home server. For example, video and audio distribution, Web service provision, and the like are performed. A wireless LAN has a narrower network bandwidth than a wired LAN, and its bandwidth is unstable due to a change in a radio wave environment. For this reason, for example, when an interruption due to other data occurs at the time of transfer of moving image data, the image quality drops, and the quality of service is significantly reduced due to a decrease in throughput. Therefore, in recent years, standardization of QoS (Quality of Service) such as IEEE 802.11e has been advanced. The use of QoS secures a necessary band at the time of data transfer, so that stable communication is expected to be realized.
[0003]
Further, in the field of W-CDMA, a common communication system is configured by integrating a plurality of communication networks having different service purposes, that is, a medical network and a police network, and baseband resources are determined based on the priority of each user terminal. There is known a system that controls so as to assign to a user terminal (see Patent Document 1). According to this system, high-speed services can be flexibly provided as needed.
[0004]
[Patent Document 1]
JP 2003-032753 A
[0005]
[Problems to be solved by the invention]
As described above, the QoS secures a band so that an application can communicate comfortably, provides stable communication, and prioritizes traffic. In communication by an application having a high priority, a necessary band is secured by waiting for another transmission until the data transmission is completed. However, if QoS is used for all data transmissions, important data will be made to wait until other data transmission is completed, and real-time data transfer will not be performed smoothly. A situation occurs in which the quality of the service provided to the user is reduced.
[0006]
Therefore, an object of the present invention is to guarantee the quality of service for a desired client device in accordance with the priority order desired by the user even when a large number of high-priority traffics are requested to the home server. It is an object of the present invention to provide a wireless network system capable of performing such operations.
[0007]
[Means for Solving the Problems]
The object of the present invention is a wireless network system including a server and a plurality of client devices, wherein the server sets priority of traffic for each of the client devices, and priority setting means for setting the priority of the traffic, according to the setting of the priority. The present invention is achieved by a wireless network system including a band control unit that allocates a required network band.
[0008]
According to the present invention, even when a large number of high-priority traffics are requested from a server, the quality of service for a desired client device can be preferentially guaranteed in accordance with the priority order desired by the user. A possible wireless network system can be provided.
[0009]
In a preferred embodiment of the present invention, when starting communication with a high-priority client device during communication with a low-priority client device, the band control unit communicates with the low-priority client device. Is stopped or the bit rate is reduced to preferentially secure a network band necessary for communication with the client device having the higher priority.
[0010]
In a further preferred embodiment of the present invention, the wireless network is constituted by a plurality of communication systems having different communication speeds, and the band control means uses a high-speed communication system for communication with the client device having the higher priority. Recruit preferentially.
[0011]
According to a further preferred embodiment of the present invention, a wireless network having a wide bandwidth can be constructed by employing a plurality of communication methods having different communication speeds, and the communication methods can be selectively used according to the priority of traffic. Thus, the network can be used efficiently.
[0012]
In a further preferred embodiment of the present invention, the priority setting means includes means for selecting whether or not the packet continuity for each client device and a desired communication speed are selected by a screen operation, and whether or not the packet continuity is necessary. And means for determining the priority from the desired communication speed.
[0013]
According to a further preferred embodiment of the present invention, the user can set the priority of traffic for each client device by a simple screen operation.
[0014]
In a further preferred embodiment of the present invention, the server has a function as a video server that distributes video.
[0015]
According to the preferred embodiment of the present invention, the quality of service for video equipment can be assured with priority, such as when video is distributed from a server, and video is not interrupted or dropped.
[0016]
The object of the present invention is also a server connected to a wireless network together with at least a plurality of client devices, wherein priority setting means for setting a priority of traffic for each of the client devices, and a server required according to the setting of the priority The present invention is also attained by a server having a band control means for allocating a proper network band.
[0017]
In a preferred embodiment of the present invention, when starting communication with a high-priority client device during communication with a low-priority client device, the band control unit communicates with the low-priority client device. Is stopped or the bit rate is reduced to preferentially secure a network band necessary for communication with the client device having the higher priority.
[0018]
In a preferred embodiment of the present invention, the priority setting means includes means for selecting the necessity of packet continuity and a desired communication speed for each of the client devices by a screen operation; Means for determining the priority order from a desired communication speed is provided.
[0019]
The object of the present invention is also a wireless network communication method for performing communication between a server connected to a wireless network and a plurality of client devices, wherein the server sets a priority order of traffic for each of the client devices. The present invention is also achieved by a wireless network communication method characterized by allocating a required network band according to the setting of the priority.
[0020]
The object of the present invention is also to set a traffic priority for each client device to a server connected to a wireless network together with at least a plurality of client devices, and to allocate a necessary network bandwidth according to the setting of the priority. It is also achieved by a computer program for performing the steps.
[0021]
The above object of the present invention is also achieved by a recording medium on which the computer program is recorded.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0023]
FIG. 1 is a schematic diagram showing a configuration of a wireless network system according to a preferred embodiment of the present invention.
[0024]
As shown in FIG. 1, the wireless network system 10 includes a home server 12 serving as a center of a wireless local area network (wireless LAN) 11 and a plurality of client devices 13 connected to the wireless LAN 11.
[0025]
The home server 12 functions as an access point (AP) of the wireless LAN 11 and also functions as, for example, a video server, a proxy server, a file server, a print server, a mail server, and a Web server, and provides various services to the client device 13. provide. On the other hand, the client devices 13 are various network devices that receive services from the home server 12, such as the wireless television 13a, the wireless television 13b, the personal computer 13c, the personal computer 13d, the printer 13e, the fax 13f, and the IP telephone 13g.
[0026]
The home server 12 is also connected to a satellite dish 14 for satellite broadcasting, a television antenna 15 for terrestrial broadcasting, and an Internet connection line 16 such as ADSL, CATV, and FTTH. When the home server 12 functions as, for example, a video server, moving image data received via the parabolic antenna 14, the television antenna 15, or the Internet connection line 16 is recorded on a built-in hard disk or the like, and the moving image data is stored in the wireless televisions 13a, 13b. And to the personal computers 13c and 13d. When functioning as a proxy server, a Web page is obtained from the Internet in place of the personal computers 13c and 13d, and transferred to the personal computer. In addition, a file is stored as a file server, mail is managed as a mail server, and a printer and a facsimile are managed as a print server.
[0027]
FIG. 2 is a schematic block diagram illustrating the configuration of the home server 12.
[0028]
As shown in FIG. 2, the home server 12 is a computer having an access point function, and includes a CPU 21, a memory 22 such as a ROM 22a and a RAM 22b, a hard disk drive (HDD) 23, an input / output interface (I / O) 24, A LAN adapter 25, an optical drive 26 and the like are provided. The home server 1 further includes an interface 27 for connecting to an external satellite tuner, CATV tuner, or the like. Display means such as a display 28a and data input means such as a keyboard 28b and a mouse 28c are connected to the input / output interface 24, and these display means and the data input means constitute a graphical user interface.
[0029]
The wireless LAN adapter 25 is a wireless communication unit necessary for causing the home server 12 to function as an access point. The wireless LAN adapter 25 according to the present embodiment corresponds to IEEE802.11b, IEEE802.11a, IEEE802.11g, and the like. Note that IEEE 802.11b is a communication system that uses a 2.4 GHz frequency band and realizes a communication speed of up to 11 Mbps. IEEE 802.11a uses a frequency band of 5.2 GHz and realizes a communication speed of up to 54 Mbps. IEEE 802.11g is a communication system that uses a 2.4 GHz frequency band and realizes a communication speed of up to 54 Mbps. A similar wireless LAN adapter 25 is also mounted on the client device side.
[0030]
Various device drivers 29a, OS 29b, application software 29c, and the like are installed in the home server 12. As the application software 29c, server software 29d, traffic control software 29e, and the like are installed, and these software and the above-mentioned hardware cooperate to realize the above-described various server functions and traffic control functions. You. These software programs are stored in the ROM 22a, provided on a recording medium such as a CD-ROM, or provided online via the Internet. The software is stored in the ROM 22a or the hard disk drive 23, is read into the RAM 22b by an instruction from a user or automatically at the time of starting the computer, and is processed by the CPU 21 to provide various services as a server, and to perform priority control and band control. Is performed.
[0031]
In the wireless network system 10 described above, data transmitted from the home server 12 to each client device 13 has a characteristic for each client device, and requirements for throughput and real-time characteristics are different. For example, since moving image data is transmitted from the home server 12 to the wireless televisions 13a and 13b, large-capacity and high-real-time communication is required. For a client device that does not handle moving image data, such as the printer 13e or FAX 13f, large-capacity and high-real-time communication is not required. In the case of the IP telephone 13g, the throughput is not required as much as the moving image data, but the IP telephone 13g is required to have real-time performance. In the case of the personal computers 13c and 13d, moving image data is also handled. In addition, since various types of data such as audio data, text data, various application data, and the like are handled, there is a need for throughput and real-time performance at each time. different.
[0032]
For this reason, the home server 12 sets a priority order of the traffic for each client device, and controls the priority of the traffic according to the communication status. The priority of traffic is set higher for client devices that handle large-capacity and high-real-time data. In particular, the traffic of a client device mainly handling moving image data such as a wireless television is given top priority.
[0033]
The priority is determined based on the MAC address, the IP address, and other address information that can specify the client device. For example, in the case of a MAC address, a client device is specified from the MAC address of the client included in the IP packet, and traffic priority control is performed on the client device according to a preset priority. As for the IP address, by assigning a fixed IP address to each client device, the client device can be identified in the same manner as the MAC address.
[0034]
The home server 12, when a communication request is issued from a high-priority new client device during communication with a low-priority client device, when the bandwidth required for communication with the new client device is insufficient. The communication with the lower priority client device is temporarily stopped or the bit rate is changed to a bit rate lower than the current one, thereby securing a band required for communication by the higher priority client device. In particular, the necessary bandwidth is absolutely secured for the client device with the highest priority. However, if there is enough bandwidth, communication is performed regardless of the priority. Also, the home server 12 is configured to perform a communication request from a low-priority new client device during a communication with a high-priority client device, and to perform a communication when the bandwidth required for communication with the new client device is insufficient. While maintaining the communication by the client device with the higher priority as it is and guaranteeing the band, the communication request by the new client device with the lower priority is rejected, or the communication is performed at a bit rate lower than the communication request.
[0035]
The above-described priority control for each client device has priority over existing protocols such as RSVP (Resource Reservation Protocol: network resource reservation protocol) for realizing QoS. As a result, the service quality for each client device can be set flexibly. For example, when the wireless TV 13a and the wireless TV 13b handling moving image data simultaneously request the home server 12 for video transfer, both are processed with a high priority according to the existing protocol for realizing QoS. There is a possibility that two high-frequency traffics may compete with each other and network resources may run short. However, the traffic is controlled so that one of the wireless televisions 13a and 13b is prioritized according to the priority setting for each client device. Accordingly, the service quality for a desired client device can be preferentially ensured. Further, when moving image data is handled on the application of the personal computer 13c or 13d, the priority of the personal computer 13g may be given priority over the IP telephone 13g. By setting higher, a certain quality of service required for the IP telephone can be maintained.
[0036]
Such priority control is particularly effective in a small-scale network such as a home network. In other words, in a small network, the user knows the client devices connected to the network, and the priority of the traffic is naturally determined by its type and intended use. By setting the priority with a higher authority than the QoS protocol, a highly convenient home network can be realized. In particular, since the wireless network has a narrow bandwidth and is unstable, it is also effective in efficiently using the bandwidth.
[0037]
FIG. 3 is a diagram illustrating an example of a priority setting screen.
[0038]
As shown in FIG. 3, on this screen 30, “client device name” 31, “address information” 32 unique to the client device, and necessity / non-requirement of the real-time property of the packet are set as priority setting items. A setting item 33 of “continuity” and a setting item 34 of “communication speed” are displayed.
[0039]
The “client device name” 31 is a name for the client device, and is manually registered by the user or automatically acquired from the client device. For example, when the client device is a personal computer, the "computer name" of the personal computer is automatically obtained. The user can change the automatically registered client device name. As the “address information” 32, the above-described MAC address or IP address is used.
[0040]
For a client device in which the continuity of the packet and the decrease in the throughput are particularly problematic, the setting item 33 of “continuity” is set to ON, and a mark “○” indicating this is displayed. Examples of such client devices include wireless televisions 13a and 13b that handle moving image data and IP telephones 13g that handle audio data. In the setting item 34 of “communication speed”, a communication speed (throughput) to be secured is set. In the present embodiment, three types of communication speeds of “20 Mbps or more” 34 a, “10 Mbps or more” 34 b, and “automatic” 34 c are prepared.
[0041]
As shown in FIG. 3, in the present embodiment, “wireless TV (TV1)” 13a, “wireless TV (TV2)” 13b, “PC (PC1)” 13c, and “PC (PC1)” 13d as client devices. , "Printer (PRT)" 13e, "FAX" 13f, and "IP telephone (TEL)" 13g are registered. For the wireless televisions 13a and 13b and the IP telephone 13g, the "continuity" setting item 33 is set to ON. As for the “communication speed” 34, the wireless TV 13a is set to “20 Mbps or more”, the wireless TV 13b and the personal computer 13c are set to “10 Mbps or more”, and the other client devices 13d to 13g are set to “automatic”. ing. These settings are set by a user's screen operation, but may be automatically set according to the type of the client device.
[0042]
The priority is determined from both “continuity” and “communication speed”. In the present embodiment, the priority order of the wireless television (TV1) 13a for which continuity is set to ON and the communication speed is set to 20 Mbps or higher is the highest. The second is a wireless television (TV2) 13b in which continuity is set to ON and communication speed is set to 10 Mbps or more. The third is an IP telephone in which continuity is set to ON and the communication speed is set to automatic. The fourth is a personal computer (PC1) 13c in which continuity is set to off and the communication speed is set to 10 Mbps or more. The fifth is a personal computer (PC2) 13d, a printer 13e, and a facsimile 13f whose continuity is set to OFF and the communication speed is set to automatic, and these are set in the same order.
[0043]
Under the above-described priority order setting, for example, when a communication request is issued from the wireless television (TV2) 13b during communication with the personal computers 13c and 13d and the printer 13e, the priority is set according to the priority order for each client device. Alternatively, the communication with the wireless television 13b is prioritized according to the priority order of the QoS protocol. If the band is insufficient, the communication with the wireless television 13b is secured by temporarily suspending the communication with the personal computers 13c and 13d or the printer 13e or reducing the bit rate.
[0044]
Also, when communication is requested from the wireless television (TV1) 13a during communication with the wireless television (TV2) 13b, communication with the wireless television 13a is prioritized according to the priority order of each client device. When the band is insufficient, the communication with the wireless television 13b is temporarily stopped or the bit rate is reduced, so that the band required for the communication with the wireless television 13a is secured.
[0045]
FIG. 4 is a flowchart illustrating the procedure of the priority control performed by the server 12.
[0046]
As shown in FIG. 4, first, the priority of traffic is registered in the home server for each client device (S401). This setting is performed on the priority setting screen shown in FIG.
[0047]
When there is a communication request from a new client device (S402Y), the home server first checks whether there is a client device that is currently communicating (S403), and if there is no such client device (S403N), the home server determines the priority. Irrespective of this, a desired band is allocated and communication with the new client device is started (S409). On the other hand, if there is a communicating client device (Y in S403), the priorities of the two are compared (S404).
[0048]
If the priority of the new client device is higher (S404Y), communication is started by preferentially securing a band required for communication with the new client device (S405 to S409). Here, if there is room in the remaining band (S405Y), the desired band is allocated to the new client device while maintaining the band allocated to the currently communicating client device (S406). Communication is started (S409). However, if the band required for communication with the new client device cannot be secured (S405N), a warning is given to the communicating client device (S407), and communication with the currently communicating client device is performed. The communication is stopped or communication is performed at a low bit rate (S408). For example, if the entire network bandwidth is 25 Mbps, the currently communicating client device uses 10 Mbps, and communication with a new client device requires 20 Mbps, communication with the currently communicating client device is performed. Either drop it to 5 Mbps or less, or stop the communication itself. Then, communication is started by allocating a desired band to the new client device (S409).
[0049]
If the priority of the new client device is lower, that is, if the priority of the currently communicating client device is higher (S404N), the communication with the currently communicating client device is maintained as it is (S411). Here, if there is room in the remaining bandwidth (S412Y), communication is started by allocating a desired bandwidth to the new client device (S409). However, if the bandwidth required for communication with the new client device cannot be secured (S412N), the new client device is warned to that effect (S413) and rejects the communication request or sets a lower bit. Communication is performed at a rate (S414). For example, if the entire network bandwidth is 25 Mbps, the currently communicating client device uses 20 Mbps, and communication with the new client device requires 10 Mbps, the communication with the new client device is reduced to 5 Mbps or less. Drop or reject the communication request.
[0050]
The above control procedure is performed each time a new client device requests a network connection (S402). If it becomes difficult to secure the necessary bandwidth for each client device due to the deterioration of the radio wave environment, etc., a warning is given to the client device that is currently communicating, and the client device with the lower priority client device is contacted. The communication is stopped or the band is narrowed so that the communication is performed at a low bit rate, thereby guaranteeing the band required for communication by the client device with a high priority. In this way, the service quality of the entire network can be efficiently maintained regardless of changes in the network environment.
[0051]
As described above, according to the present embodiment, the priority order of traffic is set for each client device, so that the service quality for each client device can be set flexibly. If the priority of traffic by client devices that handle large-capacity and high-real-time data such as video data is set high, and the bandwidth required for communication with new client devices with high priority cannot be secured, By temporarily suspending the communication of low-priority client devices or lowering the bit rate to secure the bandwidth necessary for communication of high-priority client devices, video data may be interrupted or frame It is possible to preferentially secure service quality for a desired client device, for example, by preventing dropping.
[0052]
In addition, since wireless LANs have limited bandwidth and channels, the degree of communication congestion increases with the spread of wireless LANs. However, by setting the priority of traffic for each client device, A stable service can be provided regardless of changes in the network environment. In addition, even if the client device has a low priority, if there is room in the bandwidth, provide high-speed services by performing communication at the highest possible speed regardless of the priority and using the entire bandwidth effectively. Can be.
[0053]
FIG. 5 is a schematic diagram showing a configuration of a wireless network system according to another preferred embodiment of the present invention. Note that the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.
[0054]
As shown in FIG. 5, in this wireless network system 50, a wireless LAN 11 in which a plurality of communication methods having different communication speeds coexist is constructed. For example, a so-called dual type wireless LAN adapter supporting both IEEE802.11b and IEEE802.11a is mounted on both the home server 12 and the client device 13, thereby realizing the wireless LAN 11 supporting two types of communication systems. Is done.
[0055]
In this embodiment, a band required for communication with each client device is secured for each communication method. For example, when a wireless LAN is realized by IEEE802.11b and IEEE802.11a, communication with a high-priority client device such as a wireless television (TV1) 13a or a wireless television (TV2) 13b is performed at a communication speed. The communication is performed by IEEE802.11a having a high communication speed, and the communication with a low-priority client device such as the printer (PRT) 13e or the facsimile 13f is performed by IEEE802.11b having a low communication speed. However, when communication is not performed by a client device having a high priority, even if the client device has a low priority, communication is performed using IEEE802.11a irrespective of the priority order, so that effective use of bandwidth can be achieved. It is planned.
[0056]
FIG. 6 is a flowchart illustrating the procedure of the priority control performed by the server 12.
[0057]
As shown in FIG. 6, when there is a communication request from a new client device (S601), the home server first checks the client device currently communicating (S602), and when there is no such client device (S601). S602N), high-speed communication based on IEEE 802.11a is started regardless of the priority order. On the other hand, if there is a client device that is communicating (S602Y), the priorities of the two are compared (S603).
[0058]
If the priority of the new client device is higher (S603Y), communication with the new client device according to IEEE802.11a is started (S604 to S606). Here, if there is enough bandwidth (S604Y), communication with the new client device by IEEE802.11a is performed irrespective of the priority order (S606). However, since the client device with a lower priority is communicating with IEEE802.11a, if the band required for communication with the new client device with a higher priority is insufficient (S604N), the client with a lower priority is The communication with the device is changed to IEEE802.11b (S605), and the communication with the client device having the higher priority is performed by IEEE802.11a (S606).
[0059]
If the priority of the new client device is lower (S603N), the communication by the currently communicating client device is maintained as it is (S607).
Here, since the client device with the higher priority is communicating with IEEE802.11a, if the band required for communication with the new client device with the lower priority is insufficient (N in S608), the new client device is connected to the new client device. Starts with IEEE802.11b (S610). However, if there is a margin in the band (S608Y), communication according to IEEE802.11a is performed regardless of the priority (S606).
[0060]
As described above, according to the present embodiment, a wireless network having a wide bandwidth can be constructed by employing two communication systems having different communication speeds, and the communication system is changed according to the priority of traffic. By properly using them, the network can be used efficiently. For this reason, the quality of service of the entire network can be efficiently maintained, for example, in the case of moving image data, the video is not interrupted or dropped.
[0061]
In the present embodiment, the case where the wireless LAN is realized by IEEE802.11b and IEEE802.11a has been described as an example. However, the present invention is not limited to this case. A LAN may be implemented.
Furthermore, the present invention is not limited to these, and any communication method may be used as long as it is a plurality of communication methods having different communication speeds.
[0062]
The present invention is not limited to the above embodiments, and various changes can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say,
[0063]
For example, in the above-described embodiment, the case where the present invention is applied to a home network configured around a home server has been described as an example. However, the present invention is not limited to this, and it is applicable to any scale wireless network. Applicable. Therefore, the server at the center of the network is not limited to a so-called home server.
[0064]
Further, in the above-described embodiment, the case where a wireless network is configured by the home server and the plurality of client devices has been described as an example. However, the present invention is not limited to this, and other network devices such as routers and bridges It does not matter.
[0065]
Further, in the above-described embodiment, a case has been described as an example where a network is constructed by a wireless LAN system in a narrow sense such as IEEE802.11b, IEEE802.11a, and IEEE802.11g. However, the present invention is not limited to this. Any wireless communication method, such as UWB and UWB, may be adopted.
[0066]
The setting screen of the priority shown in FIG. 3 is an example. For example, the setting item of the communication speed may be one that selects one of “high”, “medium”, and “low”. The number of steps is not limited to three, and may be any number. Further, a setting item for allowing any one of the client devices to be given the highest priority to be selected may be provided.
[0067]
【The invention's effect】
As described above, according to the present invention, the service quality for each client device can be flexibly set, and the service quality for a desired client device can be secured with priority.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a configuration of a wireless network system according to a preferred embodiment of the present invention.
FIG. 2 is a schematic block diagram illustrating a configuration of a home server 12.
FIG. 3 is a diagram illustrating an example of a priority setting screen;
FIG. 4 is a flowchart illustrating a procedure of priority control performed by a server 12;
FIG. 5 is a schematic diagram showing a configuration of a wireless network system according to another preferred embodiment of the present invention.
FIG. 6 is a flowchart illustrating a procedure of priority control performed by a server 12;
[Explanation of symbols]
10 Wireless network system
11 Wireless LAN
12 servers
13 Client device
13a Wireless TV (TV1)
13b Wireless TV (TV2)
13c Personal computer (PC1)
13d PC (PC2)
13e Printer (PRT)
13f FAX
13g IP telephone
14 Parabolic antenna
15 TV antenna
16 Internet connection line
21 CPU
22 memory
23 Hard Disk Drive (HDD)
24 input / output interface (I / O)
25 Wireless LAN Adapter
28a display (DISP)
28b Keyboard (KB)
28c mouse (MOUS)
29a Various device drivers
29b OS
29c application software
29d server software
29e Traffic control software
30 Priority setting screen
31 Client device name
32 Address information
33 Setting items of "continuity" of packet
34 “Communication speed” setting items
34a Item to select communication speed of 20Mbps or more
34b Item to select communication speed of 10Mbps or more
34c Automatic communication speed selection item
50 Wireless network system

Claims (10)

A wireless network system including a server and a plurality of client devices,
The server comprises:
A wireless network system, comprising: priority setting means for setting a priority of traffic for each client device; and bandwidth control means for allocating a required network bandwidth in accordance with the setting of the priority. The band control means,
When starting communication with a high-priority client device while communicating with a low-priority client device,
2. The system according to claim 1, wherein communication with the lower priority client device is stopped or a bit rate thereof is reduced to secure a network band necessary for communication with the higher priority client device. A wireless network system according to item 1. The wireless network comprises:
It is composed of multiple communication methods with different communication speeds,
The band control means,
3. The wireless network system according to claim 2, wherein a high-speed communication method is preferentially adopted for communication with the client device having the higher priority. The priority setting means,
Means for selecting the necessity of packet continuity for each client device and a desired communication speed by screen operation,
4. The wireless network system according to claim 1, further comprising: a unit configured to determine the priority based on necessity of the packet continuity and a desired communication speed. 5. The wireless network system according to claim 1, wherein the server has a function as a video server that distributes video. A server connected to a wireless network with at least a plurality of client devices,
A server comprising: priority setting means for setting a priority of traffic for each of said client devices; and bandwidth control means for allocating a required network bandwidth in accordance with the setting of the priority. The band control means,
When starting communication with a high-priority client device while communicating with a low-priority client device,
7. The system according to claim 6, wherein communication with the lower priority client device is stopped or a bit rate thereof is reduced to preferentially secure a network band required for communication with the higher priority client device. Server as described in. The priority setting means,
Means for selecting the necessity of packet continuity for each client device and a desired communication speed by screen operation,
8. The server according to claim 6, further comprising: means for determining the priority based on necessity of the packet continuity and a desired communication speed. A wireless network communication method for performing communication between a server and a plurality of client devices connected to a wireless network,
The wireless network communication method, wherein the server sets a priority order of traffic for each of the client devices, and allocates a necessary network band according to the setting of the priority order. A server connected to the wireless network with at least a plurality of client devices,
A computer program for executing a step of setting a priority of traffic for each of the client devices and a step of allocating a necessary network bandwidth according to the setting of the priority.

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