JP2003111144A - Radio communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio communication system which enables data to be exchanged by radio between a base station device and subscriber station devices accommodated in it by the use of data communication channels and is capable of improving data communications in efficiency. SOLUTION: Data communications between a base station device B and subscriber station devices C1 to C3 are kept on standby by each data of a communication unit requested to communicate, each data of a communication unit on stand-by are transferred to communication processing, communication standby information 11 containing data for discriminating a subscriber station device concerning communication standby as to the subscriber station devices accommodated in the base station device B is controlled, data communication channels are allocated to the subscriber station devices accommodated in the base station device B concerning the communication standby on the basis of the communication standby information, and data communications are maintained between the base station device and the subscriber station devices by radio by the use of data communication channels allocated to the subscriber station devices.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless system such as a subscriber wireless access system for performing wireless communication between a base station device fixedly installed and a subscriber station device fixedly installed. With regard to access systems and the like, in particular, wireless communication systems that improve the efficiency of data communication by implementing, for example, a best-effort communication function by shared use of data communication channels and a wireless band guarantee function by scheduling for each class. Regarding

[0002]

2. Description of the Related Art In a wireless access system, a wireless medium is used as a medium for transmitting a signal to be communicated. Generally, a wireless medium is allocated to each base station device (wireless base station device) and shared by a plurality of subscriber station devices (wireless subscriber station devices) existing in a service area managed by each base station device. .

For example, a base station device and a backbone LAN
(Local Area Network), or when the subscriber station device and the subscriber terminal device are connected by a wired LAN interface of Ethernet (registered trademark) and IEEE802.3, transmission / reception is performed via a wireless medium. The data is broadly classified into data having an individual address for addressing each subscriber terminal device and data having an address assigned for addressing a plurality of subscriber terminal devices.

Here, a packet used for communicating data having an individual address addressed to each subscriber terminal device corresponding to the former is called a unicast packet, and a plurality of subscriber station devices corresponding to the latter is used. Packets used to communicate data with an address destined for them are called broadcast packets.

Further, the base station apparatus is required to have a function of controlling allocation of data communication channels in order to effectively use the radio band. For example, it is considered that the larger the number of subscriber terminal devices accommodated in the service area of the own station, the more traffic (the amount of data to be communicated) generated. It is considered that sufficient data communication services cannot be provided unless secured. Therefore,
Conventionally, it has been considered to allocate a data communication channel by a method of allocating a dedicated radio band to each subscriber station device according to the number of subscriber terminal devices accommodated by each subscriber station device.

An outline of a subscriber wireless access system which has been developed in recent years will be described below. In recent years, a subscriber wireless access system using wireless communication called, for example, WLL (Wireless Local Loop) or FWA (Fixed Wireless Access) has been developed and put into practical use. In addition, with the spread of the Internet, there is an increasing demand for high-speed and large-capacity communication over a wireless medium.

In the subscriber wireless access system described above, a base station equipment (BSE: Base Station Equipment) connected to a backbone network such as a public line network.
Fixed at high places such as the roof of a building or a tower, and multiple subscriber station equipment (CPE: Customer Premises Equipmen)
t) is fixedly installed at a high place such as the roof of the subscriber's home building,
A personal computer (PC: Person) is used as a subscriber station device.
al Computer) and other communication terminals (subscriber terminals)
And a LAN to which such a communication terminal device is connected.

Here, the base station device and the subscriber station device are fixedly installed, for example, in an outdoor unit (ODU: Out Door Unit) fixedly installed at a high place such as a roof of a building or a tower, and inside the building. It has a structure in which an indoor unit (IDU: In Door Unit) is connected by a cable. Further, the outdoor unit of the base station apparatus or the subscriber station apparatus includes a wireless processing unit that performs wireless communication processing using an antenna, and mainly controls wireless communication processing. Further, the indoor unit of the base station device mainly controls data communication with the backbone network, and the indoor unit of the subscriber station device mainly controls data communication with the communication terminal device or LAN.

Further, in the subscriber wireless access system as described above, the same base station device is obtained by performing wireless communication by, for example, a communication system in which the base station device and the subscriber station device perform time division transmission with a radio frame. The LANs connected to different subscriber station devices accommodated in the LAN are communicatively connected for data communication, and the backbone network connected to the base station device and the LAN connected to the subscriber station devices, etc. And the like can be connected so that they can communicate data.

[0010]

However, when allocating a data communication channel by the method of allocating a dedicated radio band to each subscriber station apparatus as shown in the above-mentioned conventional example, the following (1) to (1)- There was a problem as shown in (3). (1) For example, when data communication channels are fixedly assigned, there is a problem that bursty traffic cannot be handled as follows.
That is, burst LAN traffic may occur depending on the usage status of the subscriber terminal equipment accommodated by the subscriber station equipment or the number of subscriber terminal equipment accommodated by the subscriber station equipment. Even if there is such bursty traffic, the wireless band is exclusively occupied by a specific subscriber station device, so that it is not possible to effectively use the limited wireless medium allocated to the base station device. was there.

(2) Also, although it is a case contrary to the above (1), when a wireless medium is used as a shared band, for example, when a bursty traffic is dealt with, another subscription is made as follows. There is a problem that the wireless band of the station device cannot be guaranteed. That is, when a large number of radio bands are allocated to a specific subscriber station device in response to LAN burst traffic,
There is a problem that the usable wireless band for each subscriber station device varies, and the minimum wireless band required for data communication cannot be guaranteed.

(3) In the conventional data communication channel allocation, for example, with respect to subscriber station devices accommodated in the same base station device, a part of the radio band is dedicated to a specific subscriber station device. There is a problem that it is not possible to use the remaining wireless band as the shared band while securing the band.

The present invention has been made to solve such a conventional problem, and when a base station device and a plurality of subscriber station devices wirelessly communicate data using a data communication channel, An object of the present invention is to provide a wireless communication system or the like that can allocate a data communication channel that makes communication efficient. Note that specifically, the present invention realizes to provide a wireless communication system or the like capable of solving any one of the above (1) to (3) or two or more problems.

[0014]

In order to achieve the above object, in a radio communication system according to the present invention, a base station device and a plurality of subscriber station devices accommodated in the base station device use a data communication channel. When data is wirelessly communicated with each other, data communication channels are allocated as follows. That is, the data communication between the base station device and the subscriber station device waits for each data of the communication unit for which the communication request is generated, and shifts to the communication process for each data of the communication unit in the communication standby state. Also, managing the communication standby information including the information for identifying the subscriber station device that is in the communication standby state with respect to the subscriber station device accommodated in the base station device, based on the communication standby information, A data communication channel is allocated to a subscriber station device in a communication standby state accommodated in the base station device for each data of the communication unit, and the base station device and the subscriber station device are assigned to the subscriber station device. The data is wirelessly communicated using the allocated portion of the data communication channel.

Therefore, in the configuration in which the communication standby and the transition to the communication process are performed for each data of the communication unit in the communication standby, the subscriber station device related to the communication standby for each data of the communication unit in the communication standby Since the data communication channel is allocated to the base station, the wireless medium allocated to the base station apparatus can be effectively used even when there is a burst of traffic on the LAN. Communication efficiency can be improved.

Various numbers may be used as the number of the plurality of subscriber station devices accommodated in the base station device. In addition, between the base station device and the subscriber station device, either the uplink communication for communicating data from the subscriber station device to the base station device or the downlink communication for communicating data from the base station device to the subscriber station device Either one may be done, or both may be done. The present invention can be applied to either upstream communication or downstream communication, or can be applied to both.

As the data of the communication unit, various amounts of data may be used, and not only fixed amount of data but also variable amount of data may be used. As an example, when data is communicated packet by packet, the data communicated by each packet can be used as data in communication units, and the amount of data in the communication units is data that can be communicated in one packet. The amount of data is used, and the amount of data may vary within a range equal to or less than the maximum amount of data that can be communicated in one packet depending on, for example, the communication status.

As the data of the communication unit in which the communication request is made, for example, the data of the communication unit in which the communication request is made is used in the upstream communication, and in the base station device in the down communication, for example. The data of the communication unit in which the communication request is generated is used. Then, for each data of the communication unit, the communication standby is started when the communication request is generated, and the communication processing is shifted to when the communication processing turn comes.

Further, the communication standby information may be composed of only information for identifying the subscriber station device in the communication standby state, or may include other information. In addition, various information may be used as the information for identifying the subscriber station device in the communication standby state. For example, information directly indicating whether or not each subscriber station device is in the communication standby state may be used. It is possible to use, or use information that indirectly indicates whether or not communication is in standby, such as information on the number and amount of data related to communication for each subscriber station device. . The communication standby information may be managed individually for each of the subscriber station devices accommodated in the base station device, or for the entire subscriber station device accommodated in the base station device. It may be collectively managed collectively.

Various methods may be used for allocating the data communication channel to the subscriber station device. For example, the data communication channel is allocated to each subscriber station device in each time zone. Method, for example, a method of allocating a data communication channel to each subscriber station device for each slot when data communication using slots is performed, or, for example, when data communication using a plurality of frequencies is performed A method of assigning a data communication channel to each subscriber station device for each frequency can be used. In these methods, the time slot in which the data communication channel assigned to each subscriber station device can be used, the slot in which the data communication channel assigned to each subscriber station device can be used, and each subscriber station device can be used. The frequency that can use the assigned data communication channel,
It corresponds to the allocation portion of the data communication channel for each subscriber station device.

Further, in the radio communication system according to the present invention, in the above-mentioned configuration, the base station apparatus and the subscriber station apparatus accommodated in the base station apparatus perform radio communication by a plurality of frames which are sequentially communicated. And each frame includes a data communication slot used to configure a data communication channel and communicate data in the communication units,
Further, the communication standby information includes information on the number of data in the communication unit in the communication standby state in each subscriber station device in the communication standby state. Further, as the allocation of the data communication channel, the data of the communication unit waiting for communication is set to 1
Each time the communication processing is switched to one communication processing, one subscriber station apparatus in communication standby accommodated in the base station apparatus is switched in a cyclic order, and a data communication slot is not assigned to the switched subscriber station apparatus. (That is, the data communication slot has not been allocated yet), the data communication slot included in the earliest frame is allocated, and the base station device and the subscriber station device The data is wirelessly communicated using the data communication slot assigned to the data.

Therefore, in the configuration in which data communication is performed using the data communication slot included in each frame which is sequentially communicated, the subscriber station is transferred every time one data unit of communication unit waiting for communication is transferred to the communication process. Since one device is switched in a periodic order and an unallocated data communication slot is allocated, even if there is a burst of traffic, for example, even if there is bursty traffic The data communication channels (here, data communication slots) can be evenly allocated, and the efficiency of data communication can be improved.

Here, as the frame, those having various configurations may be used, and normally, in addition to the data communication slot constituting the data communication channel,
Included are control slots that comprise a channel for communicating control information. Various data amounts may be used as the size of the data communication slot, that is, the amount of data that can be communicated by one data communication slot. Further, the number of data communication slots included in one frame may be one, or may be two or more. Further, for example, one frame may include a plurality of data communication slots having different sizes.

Further, as the information on the number of data in communication units in communication standby in each subscriber station device in communication standby, for example, in each subscriber station device accommodated in the base station device It is possible to use information such as the number of information indicating how many data of communication units exist.

Further, as a method of switching one subscriber station device in the communication standby state accommodated in the base station device in a cyclic order, for example, a predetermined subscriber station device in the communication standby state is selected. A subscriber who arranges in order and switches from the head to the tail, and then switches back to the head again, and the data of the communication unit waiting for communication does not exist in such switching. A station device is excluded from the target of the switching, while a subscriber station device in which a communication request is newly generated and data of a communication unit waiting for communication is generated is added to the target of the switching. be able to.

As the earliest frame to which the data communication slot is not assigned, for example, a frame in which the data communication slot is not yet assigned to any subscriber station device and which is sequentially communicated This corresponds to the frame that is scheduled to be communicated in the closest future.

Further, in the radio communication system according to the present invention, when the base station device and a plurality of subscriber station devices accommodated in the base station device communicate data wirelessly using the data communication channel, In this way, the data communication channel is assigned. That is, a plurality of classes for dividing the subscriber station device are provided, a data communication channel is assigned to each class, and the data communication channel is assigned to each class. A data communication channel is assigned to the subscriber station device, and the base station device and the subscriber station device wirelessly communicate data by using the assigned portion of the data communication channel to the subscriber station device.

Therefore, since the data communication channels are allocated to the subscriber station devices divided into the respective classes within the range of the data communication channel portion allocated to the respective classes, for example, the bursty traffic for each class. Even if it corresponds to the above, since it does not affect the allocation of data communication channels in other classes, guaranteeing the minimum wireless band required for data communication in other classes, etc. As a result, the efficiency of data communication can be improved.

Various classes may be used for classifying the subscriber station devices. For example, subscriber station devices belonging to the same company or the same organization may be classified into the same class. Anything can be used. Moreover, various numbers may be used as the number of the plurality of classes.

As a method of allocating a data communication channel to each class, for example, a method of allocating a data communication channel so that the maximum amount of data communicable by each class is the same is used. Alternatively, a method may be used in which each class is differentiated by assigning a data communication channel so that the maximum amount of data that can be used for data communication is different for each class.

The number of subscriber station devices classified into each class may be, for example, 1 or 2 or more. The number of subscriber station devices classified into each class may be fixedly set or variably set. Note that normally, a plurality of subscriber station devices are classified into one or more classes of the plurality of classes. Further, for example, for a class in which only one subscriber station device is divided, the allocation portion of the data communication channel for the class is
It can be regarded as the allocation portion of the data communication channel for one subscriber station device.

Further, in the radio communication system according to the present invention, in the above-mentioned configuration, the maximum number of subscriber station devices that can be classified for each class is set, and each class is classified for each class. A number of subscriber station devices less than or equal to the maximum possible number of subscriber station devices is classified. Therefore, by setting the maximum number of subscriber station devices that can be classified for each class, for example, a sufficient data communication channel assigned to the subscriber station devices that are classified for each class It is possible to secure a part, and thereby to improve the efficiency of data communication.

Here, the maximum number of subscriber station devices that can be classified for each class may be set to 1, for example, and may be set to 2 or more. The maximum number of subscriber station devices that can be classified for each class may be fixedly set, for example.
Alternatively, it may be variably set.

Further, in the radio communication system according to the present invention, in the above configuration, there are a class in which only one subscriber station device is classified and a class in which a plurality of subscriber station devices are classified. Therefore, for example, in a class in which only one subscriber station device is classified, the data communication channel portion allocated to the class by the one subscriber station device is occupied, while two or more subscriber station devices are classified. In the class, the data communication channel portion allocated to the class is shared by the two or more subscriber station devices, so that only one subscriber station device is classified and two or more subscriber station devices are classified. By using both the class and the subscriber station device accommodated in the same base station device, for example, while securing a part of the radio band as a dedicated band for a specific subscriber station device, the remaining radio It is possible to realize that a band is used as a shared band by a plurality of subscriber station devices.

The present invention also provides a base station apparatus as described above. In the base station device according to the present invention, when data is wirelessly communicated with a plurality of subscriber station devices by using a data communication channel, the data communication with the subscriber station device is performed for each data of the communication unit in which the communication request is generated. The communication processing is performed by waiting for the communication, and the communication processing is performed for each data of the communication unit in the communication standby. The data communication channel is allocated as follows. That is, in the base station device, the communication standby information management means manages communication standby information including information for identifying a subscriber station device that is in communication standby with respect to a subscriber station device accommodated in the base station device, and stores the data. Based on the communication standby information, the communication channel allocating unit allocates the data communication channel to the subscriber station device in the communication standby state accommodated in the base station device for each data of the communication unit in the communication standby state, The wireless communication means wirelessly communicates data with the subscriber station device and the assigned portion of the data communication channel for the subscriber station device.

Further, in the base station apparatus according to the present invention, in the above configuration, wireless communication is performed by a plurality of frames sequentially communicated with the subscriber station apparatus accommodated in the base station apparatus, and each frame is Includes a data communication slot used to communicate data of the communication unit by configuring a data communication channel, and the communication standby information managed by the communication standby information management means includes each subscriber station device in the communication standby state. The information on the number of data of the communication unit waiting for communication in is included. Further, the data communication channel allocating means, as the data communication channel allocation, is a subscriber in the communication waiting state, which is accommodated in the base station device every time the data of the communication unit in the communication waiting state is transferred to one communication process. One station device is switched in a cyclic order, and the data communication slot included in the earliest frame to which the data communication slot has not been allocated is assigned to the switched subscriber station device. Wirelessly communicates data with a subscriber station device and a data communication slot assigned to the subscriber station device.

In addition, in the base station apparatus according to the present invention, when wirelessly communicating data with a plurality of subscriber station apparatuses using a data communication channel, a plurality of classes for classifying the subscriber station apparatuses are provided. A data communication channel is assigned to each class, and a data communication channel is assigned to a subscriber station device as follows. That is, in the base station device, the data communication channel allocation means allocates the data communication channels to the subscriber station devices classified into each class in the data communication channel allocation part for each class for each class, and The wireless communication means wirelessly communicates data with the subscriber station device and the assigned portion of the data communication channel for the subscriber station device.

Further, in the base station apparatus according to the present invention, in the above-mentioned configuration, the maximum number of subscriber station apparatuses that can be classified for each class is set, and each class is classified separately. A number of subscriber station devices less than or equal to the maximum possible number of subscriber station devices is classified. Further, in the base station apparatus according to the present invention, in the above configuration, there are a class in which only one subscriber station apparatus is classified and a class in which a plurality of subscriber station apparatuses are classified.

[0039]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described with reference to the drawings. First, a first embodiment of the present invention will be described.
FIG. 1 shows an example of a wireless access system to which the present invention is applied, and specifically, a base station apparatus B, a backbone network N including a LAN connected to the base station apparatus B, and the like. The plurality of subscriber station devices C1 to C3 accommodated in the base station device B and the respective subscriber station devices C1 to C1
Ethernet (registered trademark) or LA connected to C3
Lines L1 to L3 composed of N and the like, and each subscriber station device C1
To C3 and a plurality of subscriber terminal devices T1 to T3, T11 to T13, T21 to T3 connected to the respective lines L1 to L3.
23 are shown. Further, in the figure, an antenna A provided in the base station device B and antennas A1 to A3 provided in the respective subscriber station devices C1 to C2 are shown.

In this example, only one base station apparatus B is shown for convenience of explanation, but normally, a plurality of base station apparatuses are provided, and the plurality of base station apparatuses form the backbone network N. Connected communicatively via.
Further, the number of subscriber station devices C1 to C3 and the subscriber terminal device T
Various numbers may be used as the numbers 1 to T3, T11 to T13, and T21 to T23.

As shown in the figure, the base station apparatus B includes a storage unit 1 configured by using a memory and a control unit 2 configured by using, for example, a CPU (Central Processor Unit). It is equipped. In addition, the storage unit 1 has a wireless subscriber station management table 11 that manages information about the subscriber station devices C1 to C3 accommodated in its own station (the base station device B), and a wireless band schedule for a plurality of classes. A bandwidth scheduling management table 12 that manages the data and a channel-based scheduling management table 13 that manages the schedule of the data communication channel that is performed for each class are stored. The bandwidth scheduling management table 12 and the class-based channel scheduling management table 13 will be described in detail in a second embodiment of the present invention described later.

Each of the subscriber station devices C1 to C3 has a function of wirelessly transmitting and receiving data to and from the base station device B, and has, for example, Ethernet (registered trademark).
It has a bridge function of filtering or forwarding data from the subscriber terminal devices T1 to T3, T11 to T13, and T21 to T23 connected via the interface of the above.

As shown in the figure, each subscriber station device C
1 to C3 include a storage unit 21 configured by using, for example, a memory, and a control unit 2 configured by using, for example, a CPU or the like.
2 and are provided. Further, in the storage unit 21, the subscriber terminal devices T1 to T3, T11 to T13, T21 to T23 connected to the own station (the respective subscriber station devices C1 to C3).
A subscriber terminal management table 31 that manages information regarding the above is stored. In the subscriber terminal management table 31, for example, the subscriber terminal devices T1 to T3, T connected to the own station.
Identification information of 11 to T13 and T21 to T23 and the like are stored and managed.

FIG. 2 shows a base station apparatus B and a subscriber station apparatus C.
1 shows an example of a format of a data communication channel 40 which is a wireless channel used for data transmission / reception with C1 to C3. As shown in the figure, the data communication channel 40 of this example has a bit synchronization signal 41, which is a signal for establishing bit synchronization, and a frame synchronization signal 42, which is a signal for establishing frame synchronization, from the beginning. And a channel type identifier signal 43 which is a signal for identifying a channel type (for example, a type such as a data channel or a control channel), and a destination subscriber station device C1.
~ C3 wireless subscriber station identifier signal 4 which is a signal designating
4, a data signal 45, which is a data signal, and an error detection code signal 46, which is a code signal for error detection, are arranged side by side.

Here, in the data signal 45, for example, the subscriber terminal devices T1 to T3 on the subscriber station devices C1 to C3 side,
Eth transmitted from T11 to T13 and T21 to T23
An Ethernet (registered trademark) packet or an Ethernet (registered trademark) packet transmitted from the backbone network N on the base station apparatus B side is stored.

A plurality of subscriber terminal devices T1 to T3,
When data having addresses assigned to T11 to T13 and T21 to T23 is transmitted from the base station apparatus B by a broadcast packet, for example, “0x
A predetermined value such as "FFFF (h: hexadecimal number)" is set in the wireless subscriber station identifier signal 44, while each subscriber terminal device T
1 to T3, T11 to T13, and T21 to T23, when data having individual addresses are transmitted from the base station apparatus B by a unicast packet, for example, the destination subscriber terminal apparatuses T1 to T3, T11 to T13, T21 ~
The values of the identifiers of the subscriber station devices C1 to C3 accommodating T23 are set in the wireless subscriber station identifier signal 44. In this example,
By using such settings, the subscriber station devices C1 to C3 on the receiving side of the data communication channel determine the value of the identifier stored in the wireless subscriber station identifier signal 44.
It is possible to control the reception operation by an unspecified number of subscriber station devices C1 to C3 or specific subscriber station devices C1 to C3.

FIG. 3 shows a base station apparatus B and a subscriber station apparatus C.
1 shows an example of a format of a wireless frame 50 used for wireless line control performed between 1 to C3. As shown in the figure, the radio frame 50 of the present example has, from the beginning, a broadcast control channel 51 that is a channel for performing broadcast and control, a frame control channel 52 that is a channel for performing frame control, and a base station apparatus B. To subscriber station device C
1 to C3, which is a channel for communicating downlink communication data, and subscriber station devices C1 to C
3 from the base station apparatus B to the base station apparatus B or the above-mentioned downlink communication data for communicating the uplink / downlink data communication channel 54 and the link control channel 55 for link control.

In the broadcast control channel 51, the base station device B
Notifies the entire wireless cell (service area) of the synchronization establishment timing of the wireless frame 50,
The notification of the value of the frame counter, which is the serial number of the wireless frame 50, the notification of operation information such as the identifier of the local station (the base station device B), and the wireless frame 50 including the notification control channel 51 The subscriber station devices C1 to C3 notify the band allocation information indicating whether the data communication channel 54 can be used.

In the frame control channel 52, the base station apparatus B notifies the subscriber station apparatuses C1 to C3 of the band allocation information of the link control channel 55, and the subscriber station (the relevant base station apparatus B) subscribes. Station equipment C1 to C3
And subscriber terminal devices T1 to T3, T11 to T13, T21
~ Notifies the information of the result of T23 authentication.

In the downlink data communication channel 53, from the base station device B to the subscriber station devices C1 to C3, Ethernet
Data is communicated by (registered trademark) packets or the like. In the upstream / downstream data communication channel 54, from the subscriber station devices C1 to C3 to the base station device B, Ethernet
Data is communicated by et (registered trademark) packets or the like, or from the base station device B to the subscriber station device C1.
Data is communicated to C3 by Ethernet (registered trademark) packets or the like.

In the link control channel 55, the subscriber station devices C1 to C3 request the base station device B to allocate a radio band for using the upstream / downstream data communication channel 54 for communication of upstream communication data, , And notifies the information of the authentication request of its own station (the subscriber station devices C1 to C3). In this example, the wireless frame 5 having such a configuration
By sequentially communicating 0, the base station device B and the subscriber station devices C1 to C3 are connected to, for example, time division multiple access / time division duplex (TDMA / TDD: Time Division Multiple Acces).
s / Time Division Duplex) method to control the wireless link.

FIG. 4 shows an example of the format of the wireless subscriber station management table 11 stored in the storage unit 1 of the base station apparatus B. In this example, the wireless subscriber station management table 11 is provided for each of the subscriber station devices C1 to C3. As shown in the figure, the wireless subscriber station management table 11 corresponding to each of the subscriber station devices C1 to C3 has a pointer (uplink next) from the beginning indicating the next wireless subscriber station management table regarding upstream communication data. 61, a pointer (uplink prev) 62 indicating the previous wireless subscriber station management table for upstream communication data, and a pointer (downlink next) indicating the next wireless subscriber station management table for downstream communication data.
t) 63, and a pointer (downstream prev) 64 indicating the previous wireless subscriber station management table for downstream communication data,
Radio subscriber station ID 65, belonging class 66, upstream data queue counter 67, downstream data queue counter 6
And 8 are arranged side by side.

Here, when there are a plurality of subscriber station devices C1 to C3 having the uplink communication data in the communication standby state to be transmitted, the base station device B uses the uplink next 61 and the uplink prev 62 to manage the radio subscriber station. Create a matrix consisting of a bidirectional list of tables. Specifically, regarding uplink communication data, a wireless subscriber station management table corresponding to a subscriber station device in the following order with respect to a wireless subscriber station management table provided for a certain subscriber station device Is indicated by the up-link next 61, and the wireless subscriber station management table corresponding to the subscriber station device in the previous order is moved up pr.
Shown by ev62.

Similarly, the subscriber station device C1 in which the downlink communication data in the standby state for the communication to be received exists in the base station device B
When there are a plurality of C3 to C3, the base station apparatus B creates a matrix composed of the bidirectional list of the wireless subscriber station management table by the downlink next 63 and the downlink prev64. Specifically, regarding downlink communication data, a wireless subscriber station management table corresponding to a subscriber station device in the following order is provided with respect to a wireless subscriber station management table provided for a certain subscriber station device. Is indicated by downlink next63, and the wireless subscriber station management table corresponding to the subscriber station devices in the previous order is indicated by downlink prev64.

The base station apparatus B of this example is a subscriber station apparatus C1.
To the subscriber station indicated by the radio subscriber station management table at the head of the matrix created for the above-mentioned uplink communication data and downlink communication data when allocating a radio band for performing uplink communication and downlink communication to C3 Radio bands are allocated in order from the device according to the order of the matrix.

The wireless subscriber station ID 66 contains the base station device B.
Subscriber station devices C1 to C1 that communicate within the service area of
Information on the identifier assigned to C3 is set. In the belonging class 67, information on the class to which the subscriber station devices C1 to C3 managed by the wireless subscriber station ID 66 belong is set. The class will be described in detail in a second embodiment of the present invention described later.

In the upstream data queue counter 67, regarding the upstream communication data, the number of pieces of data (data queue which is in a state of waiting for data transmission by the subscriber station devices C1 to C3 managed by the wireless subscriber station ID 66). Information on the number of ingress (traffic) is set. Similarly, the downlink data queue counter 68 is in a state in which the downlink communication data is in a state of waiting for transmission of data to the subscriber station devices C1 to C3 managed by the wireless subscriber station ID 66 by the base station device B. Information of the number (data queuing number (traffic)) is set.

In this example, the information of the upstream data queue counter 67 and the downstream data queue counter 68 described above are used.
When counting the number of data to be set as the information of, the data transmitted in one packet (in this example, one data communication channel slot) is regarded as one data, that is, the data transmitted in one packet is regarded as one unit. As data, the number of data is counted.

Further, in this example, with respect to the downlink communication data, the subscriber terminal devices T1 to T3 and T11 to T1 which the base station device B receives via the backbone network N.
3, data addressed to T21 to T23 (subscriber station devices C1 to
(Data to be transmitted to C3), the number of data queuing is counted based on, for example, the base station device B for the upstream communication data, the subscriber station devices C1 to C3.
The number of data queuing is counted based on the generation status of the request information of the upstream data communication received from.

In the base station apparatus B of this example, for example, the value of the upstream data queue counter 67 and the downstream data queue counter 6
The information regarding the subscriber station devices C1 to C3 in which one or both of the values of 8 and 0 are not zero (= 0) is managed by the wireless subscriber station management table 11, while the subscribers of which both values are zero The information about the station devices C1 to C3 is not managed by the wireless subscriber station management table 11, and the information about the subscriber station devices C1 to C3 is added to or deleted from the matrix of the wireless subscriber station management table 11. To schedule the allocation of the radio band to the subscriber station devices C1 to C3, thereby realizing the best effort type communication in which the radio band is shared by the plurality of subscriber station devices C1 to C3.

Referring to FIG. 5, control unit 2 of base station apparatus B
An example of a procedure of processing for controlling the bidirectional list (bandwidth sharing queue) of the wireless subscriber station management table 11 will be described below. In the figure, in order to realize the best-effort communication in which the wireless band is shared, the control unit 2 of the base station device B controls the subscriber station devices C1 to C1 to the matrix of the wireless subscriber station management table 11. An example of the flow of processing for controlling the addition and deletion of information regarding C3 to allow a plurality of subscriber station devices C1 to C3 to share a wireless band is shown.

Further, in the following, the processing relating to the upstream communication will be described as a representative, but the processing relating to the downstream communication is similar to the processing relating to the upstream communication. Further, in the following, for processing related to downlink communication, "(or
...) "is added, and if" uplink ... "in the description is replaced with" downlink ... "in" (or ...) ", processing related to downlink communication is realized.

Further, in the following, for simplification of the description, a case where only the upstream data queue counter 67 (or the downstream data queue counter 68) is managed is shown, but for example, the upstream data queue counter 67 and the downstream data queue counter 67 are managed. Both 68 and 68 can be managed collectively.

The control unit 2 of the base station device B first acquires the leading wireless subscriber station management table 11 based on the bidirectional list of the wireless subscriber station management table 11, and then acquires the wireless subscriber station concerned. A wireless band for communicating upstream communication data (or downstream communication data) is assigned to the subscriber station devices C1 to C3 managed by the management table 11 (step S1), and the wireless subscriber station management table 11
The value of the upstream data queue counter 67 (or the downstream data queue counter 68) stored in is updated so as to be decreased by 1 (step S2). Next, the base station device B
The control unit 2 of the
(Or, it is determined whether or not the value of the downlink data queue counter 68) has become zero (step S3).

As a result of this determination (step S3), when it is determined that the updated value of the upstream data queue counter 67 (or the downstream data queue counter 68) has become zero, the control unit 2 of the base station device B , Subscriber station devices C1 to C managed by the wireless subscriber station management table 11
Assuming that it is no longer necessary to allocate a wireless band for upstream communication (or downstream communication) for No. 3, the wireless subscriber station management table 11 is selected from the bidirectional list (bandwidth sharing queue) of the wireless subscriber station management table 11. It is deleted (step S4), and the uplink n is set as the next wireless subscriber station management table 11 of the deleted wireless subscriber station management table 11.
What is indicated by ext61 (or downlink next63) is updated as the head wireless subscriber station management table 11 in the bandwidth sharing queue (step S5).

On the other hand, the result of the above determination (step S
3), the updated upstream data queue counter 67 (or
When it is determined that the value of the downlink data queue counter 68) is 1 or more, the control unit 2 of the base station device B sets the next wireless subscriber station management table 11 as the next wireless subscriber station management table 11 to the upstream station. next61 (or downlink next
The one indicated by t63) is updated as the head wireless subscriber station management table 11 in the bandwidth sharing queue (step S5).

In this example, the list length of the bidirectional list (bandwidth sharing queue) of the wireless subscriber station management table 11 is the wireless band assigned to the uplink communication (or downlink communication) of the base station apparatus B. Subscriber station devices C1 to C3
In addition, as the list length is longer, one subscriber station device C1 to C3 is allocated to the subscriber station devices C1 to C3 evenly.
The radio band that can be allocated per 3 becomes smaller.

As described above, in the radio access system of this example, for example, a plurality of base station devices B and a plurality of subscriber station devices to which the subscriber terminal devices T1 to T3, T11 to T13, T21 to T23 are connected. In a configuration including C1 to C3 and performing wireless communication between the base station device B and the subscriber station devices C1 to C3, a data communication channel (in this example, a downlink data communication channel 53, an uplink / downlink data communication channel By scheduling the assignment 54) for each data queue (traffic), it is possible to realize a best-effort communication function in which a plurality of subscriber station devices C1 to C3 share a wireless band.

In this example, the downlink data communication channel 53 included in the radio frame 50 is used as a data communication channel for communicating downlink communication data, and the uplink / downlink data communication included in the radio frame 50 is used. The channel 54 is used as a data communication channel for communicating upstream communication data or downstream communication data.

Further, in this example, the data communicated by using the packet communicated by one slot of the downlink data communication channel 53 and the packet communicated by the slot of one uplink / downlink data communication channel 54 are used. The data to be communicated is used as data for each communication. In addition, in this example, in uplink communication and downlink communication,
A communication request is generated for each communication unit data (data queue), and the communication waiting data is transferred to the communication processing for each communication unit data.

In this example, the information managed by the wireless subscriber station management table 11 is used as the communication standby information, and the value of the upstream data queue counter 67 and the value of the downstream data queue counter 68 are 1. From the above, it is identified that the subscriber station devices C1 to C3 corresponding thereto are related to communication standby.

Further, in this example, a slot of one downlink data communication channel 53 included in the radio frame 50,
A slot of one uplink / downlink data communication channel 54 included in the radio frame 50 corresponds to a data communication slot. In addition, in this example, for each data of the communication unit, one of the subscriber station devices C1 to C3 in communication standby is switched in the periodic order set in the bidirectional list of the wireless subscriber station management table 11. , The switched subscriber station devices C1 to C
The earliest free data communication slot is assigned to the data No. 3. Further, in the present example, the subscriber station devices C1 to C3 and the base station device B wirelessly communicate data by using the data communication slot which is the allocation portion of the data communication channel to the subscriber station devices C1 to C3.

Further, in the base station apparatus B of this example, the communication standby information managing means is constituted by the function of managing the information of the wireless subscriber station management table 11, and the data communication channel is allocated for each data of the communication unit. The data communication channel allocating means is configured by the function of performing the subscriber communication, and the subscriber station device C is configured using the data communication channel allocating portion.
A data wireless communication unit is configured by a function of wirelessly communicating data with 1 to C3.

Next, a second embodiment of the present invention will be described. The wireless access system of this example has, for example, the same configuration as that shown in the first embodiment, and has the function of performing the same operation as that shown in the first embodiment. In the following, the description of the configuration and operation described in the first embodiment will be omitted, and the configuration and operation characteristic of the wireless access system of this example will be described in detail. In the present example, for convenience of description, the same reference numerals as those used in the first embodiment are used to indicate components such as the base station apparatus B and the subscriber station apparatuses C1 to C3.

In this example, three classes 1, 2, and 3 for dividing the subscriber station devices C1 to C3 are provided,
Each of the subscriber station devices C1 to C3 accommodated by the base station device B is classified into one of classes 1 to 3. Further, the information on the classes 1 to 3 to which the respective subscriber station devices C1 to C3 belong is based on the wireless subscriber station management table 1 shown in FIG.
It is set in the belonging class 66 stored in 1. Further, in this example, the radio band allocated to the base station device B is divided into the plurality of classes 1 to 3 into which the subscriber station devices C1 to C3 that wirelessly communicate with the base station device B are divided. Assigned to

FIG. 6 shows an example of the format of the bandwidth scheduling management table 12 stored in the storage unit 1 of the base station apparatus B. As shown in the figure, the bandwidth scheduling management table 12 includes an offset 71 indicating information of a sequential number corresponding to the frame counter notified by the wireless frame 50, and a data communication channel in the wireless frame 50 corresponding to the sequential number. It is configured by associating with an allocation candidate 72 indicating information of classes 1 to 3 to be allocated.

Specifically, in the example of the figure, "0",
Each offset 7 of "1", "2", ..., "n-1"
Corresponding to the value of 1, classes 1 to 3, class “2”, class “3”, ..., Class “1”, are assigned as allocation candidates 72. Note that n is, for example, a value of 2 or more. Based on the correspondence between the offset 71 and the allocation candidate 72, the base station apparatus B guarantees that a dedicated radio band is allocated to each of the classes 1 to 3 in a predetermined frame cycle, and, for example, class 1
It realizes the function of differentiating the amount of wireless band guaranteed between 3 and 3. In addition, as such a frame cycle, various cycles may be used.

FIG. 7 shows an example of the format of the class-based channel scheduling management table 13 stored in the storage unit 1 of the base station apparatus B. As shown in the figure, the class-based channel scheduling management table 13 is composed of a plurality of channel scheduling tables provided for managing information on each of the classes 1 to 3, and in the example of the figure, A class 1 channel scheduling management table 80a, a class 2 channel scheduling management table 80b,
Class 3 channel scheduling management table 80
and c.

As shown in the figure, each class 1
~ 3 channel scheduling management table 80a ~
80c is composed of an entry size 81, the number of entries 82, an ascending head pointer 83, and a descending head pointer 84 arranged from the beginning.

In the entry size 81, information on the maximum number of subscriber station devices C1 to C3 capable of sharing the wireless band in the corresponding classes 1 to 3, that is, to be classified into the classes 1 to 3 is provided. Subscriber station device C1 capable of
The maximum number of pieces of information of C3 is set. Number of entries 82
In the corresponding classes 1 to 3, information on the number of subscriber station devices C1 to C3 that currently share a wireless band, that is, the subscriber station devices C1 currently classified into the classes 1 to 3 is described. Information about the number of C3 is set.

The upstream head pointer 83 corresponds to the bidirectional list (bandwidth sharing queue) of the wireless subscriber station management table 11 relating to upstream communication when classified into classes 1 to 3 based on the information of the belonging class 66. Class 1
To one or more subscriber station devices C1 to C3
A pointer indicating the subscriber station devices C1 to C3 at the head of the list is set. Similarly, the downward head pointer 84
When the bidirectional list (bandwidth sharing queue) of the wireless subscriber station management table 11 regarding downlink communication is classified into each class 1 to 3 by the information of the belonging class 66, it is classified into corresponding classes 1 to 1. Or, among the plurality of subscriber station devices C1 to C3, the first subscriber station device C1 to C3
Is set.

Here, the upstream head pointer 83 is used for the upstream data communication channel 54 in the wireless frame 50.
Is used for each class 1-3 allocation,
Similarly, the downlink head pointer 84 is used to assign the data communication channels 53 and 54 for downlink communication in the radio frame 50 for each class 1 to 3.

Further, in this example, the maximum number of subscriber station devices C1 to C3 that can be classified is 1, for example, according to the information of the entry size 81 set for each class 1 to 3. In the classes 1 to 3, one subscriber station device C1 to C3 classified into the classes 1 to 3 occupies the radio band allocated to the classes 1 to 3, and, on the other hand, for example, the maximum classifiable band. Subscriber station device C
In classes 1 to 3 in which the number of 1 to C3 is 2 or more, two or more subscriber station devices C1 classified into the classes 1 to 3
The wireless bands assigned to the classes 1 to 3 are shared by C3.

Referring to FIG. 8, control unit 2 of base station apparatus B
An example of a procedure of a process for scheduling bandwidth allocation of data communication channels for each class 1 to 3 will be described below. In the figure, an example of the flow of the processing performed by the control unit 2 of the base station device B is shown.

The control unit 2 of the base station apparatus B first increments the value of the frame counter of the radio frame 50 by 1, and calculates the sequential number stored as the offset 71 in the bandwidth scheduling management table 12 (step S11). ). The sequential number is, for example, the value of the remainder when the value of the frame counter is divided by the number of frames included in the predetermined frame period.

Next, the control unit 2 of the base station device B allocates the allocation candidates 72 stored in the bandwidth schedule management table 12.
On the basis of the information of 1), the classes 1 to 3 which are set as band allocation candidates corresponding to the calculated sequential numbers are specified, and the classes are assigned as the data communication channels in the radio frame 50 corresponding to the sequential numbers. The identified classes 1 to 3 are determined (step S12).

Next, the control unit 2 of the base station apparatus B determines the classes 1 to 3 for performing the data communication service in the radio frame 50 as described above, and then the classes 1 to 1
Among the subscriber station devices C1 to C3 classified into 3, the subscriber station devices C1 to C3 managed by the leading wireless subscriber station management table 11 are specified, and the specified subscriber station devices C1 to C3 are specified. A data communication channel is assigned to C3 (step S13, step S14, step S16-
Step S18).

Specifically, the control unit 2 of the base station device B is
It is determined whether or not the identified class is "class 1" (step S13), and if so, the wireless subscriber station management table 11 for the subscriber station devices C1 to C3 classified into "class 1" is stored. Among them, the head wireless subscriber station management table 11 is acquired, and the data communication assigned to the “class 1” is assigned to the subscriber station devices C1 to C3 corresponding to the acquired head wireless subscriber station management table 11. channel,
That is, in the present example, the downlink data communication channel 53 or the uplink /
The downlink data communication channel 54 is allocated (step S
14).

As a result of the above determination (step S
13) If it is determined that the specified class is not “class 1”, the control unit 2 of the base station device B determines whether the specified class is “class 2” (step S
16), if so, obtains the first wireless subscriber station management table 11 among the wireless subscriber station management tables 11 related to the subscriber station devices C1 to C3 classified into "class 2", and obtains the first The data communication channel assigned to the "class 2" is assigned to the subscriber station devices C1 to C3 corresponding to the wireless subscriber station management table 11 (step S17).

As a result of the above determination (step S
16) If it is determined that the specified class is not "class 2", the control unit 2 of the base station device B regards the specified class as "class 3" and classifies it into "class 3". Among the wireless subscriber station management tables 11 relating to the subscriber station devices C1 to C3 to be acquired, the leading wireless subscriber station management table 11 is acquired, and the subscriber station corresponding to the acquired leading wireless subscriber station management table 11 is acquired. The data communication channel assigned to the "class 3" is assigned to the devices C1 to C3 (step S18).

Next, the control unit 2 of the base station apparatus B uses, for example, the same channel scheduling processing procedure as shown in FIG. Control processing for adding or deleting information to or from the bidirectional list (bandwidth sharing queue in the class) of the wireless subscriber station management table 11 in the identified classes 1 to 3 is performed (step S15).

As described above, in the wireless access system of this example, for example, a plurality of base station devices B and a plurality of subscriber station devices to which the subscriber terminal devices T1 to T3, T11 to T13, and T21 to T23 are connected. In a configuration including C1 to C3 and performing wireless communication between the base station device B and the subscriber station devices C1 to C3, a data communication channel for the subscriber station devices C1 to C3 (in this example, the downlink data communication channel 53
Alternatively, by scheduling the allocation of the upstream / downstream data communication channel 54) for each class 1 to 3,
It is possible to guarantee a radio band that can be occupied by each class 1 to 3 and to differentiate the guaranteed radio band between classes 1 to 3.

In the wireless access system of this example,
Grouping one or more subscriber station devices C1 to C3,
Then, by allocating the radio bands allocated as exclusive to each of the classes 1 to 3 to each group including one or a plurality of subscriber station devices C1 to C3, one radio band is provided under the control of the same base station device B. Subscriber station devices C1 to C
Wireless band exclusively occupied by 3 and a plurality of subscriber station devices C1
It is possible to realize communication in which wireless bands shared by C3 to C3 are mixed.

Here, in this example, the radio band allocated to the base station apparatus B is divided and allocated to the classes 1 to 3, and further, in the classes 1 to 3, the classes 1 to 3 are allocated. The assigned wireless band is assigned to one or a plurality of subscriber station devices C1 to C3 classified into classes 1 to 3. In addition, in this example, the maximum number of subscriber station devices C1 to C3 that can be classified into the classes 1 to 3 is set in each of the classes 1 to 3, and the number of subscribers equal to or less than the maximum number is set. The station devices C1 to C3 are classified.

Further, in the base station apparatus B of this example, the subscriber station apparatus C classified into classes 1 to 3 for each class 1 to 3
Data communication channel assigning means is configured by the function of assigning data communication channels to 1 to C3, and the function of wirelessly communicating data with the subscriber station devices C1 to C3 using the assigned portion of the data communication channels. A data wireless communication means is configured by the above.

Here, the configurations of the radio communication system, base station apparatus, subscriber station apparatus, and the like according to the present invention are not necessarily limited to those shown above, and various configurations may be used. Further, the application fields of the present invention are not necessarily limited to those shown above, and the present invention can be applied to various fields. As an example, this example shows a case where the present invention is applied to a subscriber radio access system in which a base station device and a subscriber station device are fixedly set, and a subscriber terminal device is connected to the subscriber station device. However, the present invention can be applied to various wireless communication systems.

As various processes performed in the radio communication system, base station apparatus, subscriber station apparatus, etc. according to the present invention, for example, in a hardware resource including a processor and a memory, the processor is a ROM (Read Only).
A configuration controlled by executing a control program stored in the memory) may be used, or each functional unit for executing the processing may be configured as an independent hardware circuit. Further, the present invention is a floppy (registered trademark) storing the above control program.
It can also be understood as a computer-readable recording medium such as a disc or a CD (Compact Disc) -ROM or the program (itself). By inputting the control program from the recording medium to the computer and causing the processor to execute the program, The processing according to the present invention can be performed.

[0098]

As described above, according to the wireless communication system and the like of the present invention, the base station device and the plurality of subscriber station devices accommodated in the base station device transmit data using the data communication channel. When performing wireless communication, data communication between the base station device and the subscriber station device is performed by waiting for communication for each data in the communication unit for which a communication request has occurred, and performing communication processing for each data in the communication unit in communication standby. The communication standby information including information for identifying the subscriber station device involved in the communication standby with respect to the subscriber station device accommodated in the base station device is managed, and based on the communication standby information, A data communication channel is allocated to a subscriber station device that is accommodated in a base station device and is in a communication standby state for each data of the communication unit that is in a communication standby state, and the base station device and the subscriber station device are Since the data is wirelessly communicated by using the portion for allocating the data communication channel to the subscriber station device, the wireless medium assigned to the base station device can be used even if there is burst traffic on the LAN, for example. It can be effectively used, and the efficiency of data communication can be improved.

Further, in the radio communication system according to the present invention, in the above-mentioned configuration, the base station apparatus and the subscriber station apparatus accommodated in the base station apparatus are wirelessly communicated by a plurality of frames which are sequentially communicated. Each frame includes a data communication slot used to form a data communication channel and communicate data in the communication unit, and the communication standby information includes each subscriber station in communication standby. Information about the number of data in the communication unit in communication standby in the device is included, and as the allocation of the data communication channel, a base station is transferred every time one data in communication unit in communication standby is transferred to one communication process. Switch one subscriber station device which is accommodated in the device and is in a communication standby state in a periodic order, and the data communication slot is not assigned to the switched subscriber station device. Performed to assign data communication slots contained in earliest frame it is, and,
Since the base station device and the subscriber station device wirelessly communicate data using the data communication slot assigned to the subscriber station device, even when there is bursty traffic, for example. The data communication channels (data communication slots) can be evenly allocated to the respective subscriber station devices that are in communication standby, and the efficiency of data communication can be improved.

Further, according to the wireless communication system and the like of the present invention, when the base station device and the plurality of subscriber station devices accommodated in the base station device wirelessly communicate data using the data communication channel, A subscriber that is provided with a plurality of classes for classifying subscriber station devices, allocates a data communication channel to each class, and is classified into each class in the allocation part of the data communication channel to each class A data communication channel is assigned to a station device, and the base station device and the subscriber station device wirelessly communicate data by using a portion of the data communication channel assigned to the subscriber station device. Even if it corresponds to bursty traffic for each, the data communication channels of other classes Ri because is not given effect relies, can such be guaranteed minimum radio bandwidth required for data communication in other classes, which makes it possible to improve the efficiency of the data communication.

Further, in the radio communication system according to the present invention, in the above configuration, the maximum number of subscriber station devices that can be classified for each class is set, and each class has its own number. Since the number of subscriber station devices that is less than or equal to the maximum number of subscriber station devices that can be divided is divided, secure a sufficient data communication channel portion that is allocated to each class of subscriber station device. By doing so, the efficiency of data communication can be improved.

Further, in the radio communication system according to the present invention, in the above configuration, there are a class in which only one subscriber station device is classified and a class in which a plurality of subscriber station devices are classified. Therefore, for example, regarding subscriber station devices accommodated in the same base station device, a part of the radio band is reserved as a dedicated band for a specific subscriber station device and the remaining radio band is used as a shared band. It is possible to realize such a thing.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration example of a wireless access system according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a format of a data communication channel used for data communication between a base station device and a subscriber station device.

FIG. 3 is a diagram showing an example of a format of a radio frame used for radio channel control between a base station apparatus and a subscriber station apparatus.

FIG. 4 is a diagram showing an example of a format of a wireless subscriber station management table stored in a base station device.

FIG. 5 is a flowchart showing an example of a procedure of processing for controlling a band sharing queue performed by the control unit of the base station device.

FIG. 6 is a diagram showing an example of a format of a bandwidth scheduling management table stored in a base station device.

FIG. 7 is a diagram showing an example of a format of a class-based channel scheduling management table stored in a base station device.

FIG. 8 is a flowchart showing an example of a procedure of a process of scheduling bandwidth allocation of a data communication channel for each class, which is performed by the control unit of the base station device.

[Explanation of symbols]

B ... Base station device, C1-C3 ... Subscriber station device,
A, A1 to A3 ... Antenna, T1 to T3, T11 to T
13, T21 to T23 ... Subscriber terminal device, N ... Backbone network, L1 to L3 ... Line, 1, 2
1 ... Storage unit, 2, 22 ... Control unit, 11 ... Radio subscriber station management table, 12 ... Bandwidth scheduling management table, 13 ... Class-based channel scheduling management table, 31 ... Subscriber terminal management table ,

Claims (7)

[Claims] 1. A wireless communication system in which a base station device and a plurality of subscriber station devices accommodated in the base station device wirelessly communicate data using a data communication channel, wherein the base station device and subscribers Data communication with the station device is performed by waiting for communication for each data unit of the communication unit for which a communication request has occurred and shifting to communication processing for each data unit of the communication unit that is waiting for communication, and is stored in the base station device. Managing the communication standby information including information for identifying the subscriber station device which is in communication standby with respect to the subscriber station device, and based on the communication standby information, the base station device for each data of the communication unit in communication standby. A data communication channel is allocated to a subscriber station device that is in a communication standby state, and the base station device and the subscriber station device allocate the data communication channel to the subscriber station device. Wireless communication system, wherein the data to radio communication, it is used. 2. The wireless communication system according to claim 1, wherein the base station device and the subscriber station device accommodated in the base station device perform wireless communication by a plurality of frames that are sequentially communicated, and Includes a data communication slot used to communicate data of the communication unit by configuring a data communication channel, and the communication standby information includes the communication in communication standby in each subscriber station device in communication standby. Information about the number of units of data is included, and the allocation of the data communication channel relates to the standby state of communication accommodated in the base station apparatus every time the data of the standby communication unit is transferred to one communication process. One subscriber station device is switched in a cyclic order, and the data included in the earliest frame to which the data communication slot is not assigned to the switched subscriber station device is included. Wireless communication system performs assigning communication slots, a base station apparatus and the subscriber station apparatus wirelessly communicating data using a data communication slot allocated to the subscriber station, characterized in that. 3. A wireless communication system in which a base station device and a plurality of subscriber station devices accommodated in the base station device wirelessly communicate data using a data communication channel, and the subscriber station devices are classified. The data communication channel is allocated to each class, and the data communication channel is allocated to the subscriber station device divided into each class in the allocation part of the data communication channel to each class for each class. And a base station apparatus and a subscriber station apparatus wirelessly communicate data by using an assigned portion of a data communication channel for the subscriber station apparatus. 4. The wireless communication system according to claim 3, wherein the maximum number of subscriber station devices that can be classified for each class is set, and each class has the maximum number of subscribers that can be classified. A wireless communication system characterized in that subscriber station devices of a number equal to or less than the number of station devices are classified. 5. The wireless communication system according to claim 3 or 4, wherein there are a class in which only one subscriber station device is classified and a class in which a plurality of subscriber station devices are classified. A wireless communication system. 6. A base station device for wirelessly communicating data with a plurality of subscriber station devices using a data communication channel, wherein data communication with a subscriber station device is data of a communication unit for which a communication request has occurred. The communication is waited for each time, and the communication processing is performed for each data of the communication unit in the communication standby, and the base station device is in the communication standby state with respect to the subscriber station device accommodated in the base station device. Communication standby information managing means for managing communication standby information including information for identifying the subscriber station device according to the above, and the base station device accommodates each data of the communication unit waiting for communication based on the communication standby information. Data communication channel allocating means for allocating a data communication channel to a subscriber station device involved in communication standby,
A base station device, comprising: a subscriber station device; and a data wireless communication means for wirelessly communicating data using a portion of a data communication channel allocated to the subscriber station device. 7. A base station device for wirelessly communicating data with a plurality of subscriber station devices using a data communication channel, wherein a plurality of classes for dividing the subscriber station devices are provided, and for each class. A data communication channel is allocated, and the base station device allocates the data communication channel to the subscriber station device classified into each class in the allocation part of the data communication channel to each class for each class. A base station apparatus comprising: an allocating unit, and a data wireless communication unit that wirelessly communicates data by using a subscriber station apparatus and a section for allocating a data communication channel to the subscriber station apparatus.