JP2001169327A - Wireless access system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless access system that manages idle sectors so as to effectively utilize only busy sectors thereby enhancing the communication efficiency. SOLUTION: In the wireless access system, a base station device 3 is provided with a subscriber management information table 13 that stores a sector number corresponding to a subscriber ID and a SW control means 12 selects only a sector antenna corresponding to a sector SW 11 on the basis of a sector number in the subscriber management information table to conduct communication.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subscriber radio access system for providing a high-speed line to a user using radio, and more particularly to a radio access system for optimizing the use of a sector antenna in a base station apparatus. .

[0002]

[Prior Art] For the purpose of developing the next-generation information and communication infrastructure,
With the nationwide development of subscriber optical fiber networks being promoted by 2010, subscribe to high-speed lines using radio for the purpose of supplementary use of subscriber optical fiber networks and early promotion of regional network development. There is a growing demand for a subscriber wireless access system (FWS: Fixed Wireless Access), which is provided to consumers.

[0003] The wireless access system includes a PP (Point-Point) system by inter-building communication for companies,
General homes and small offices (SOHO: Small Office Home O
ffice), a P-MP (Point-MultiPoint) method has been considered. The P-MP wireless access system includes one wireless base station and a plurality of subscriber stations connected by wireless lines.

Some base station apparatuses include a plurality of sector type antennas, and wireless communication with a plurality of subscriber station apparatuses is performed using the plurality of sector antennas having directivity. Had become.

[0005] When transmitting data to all subordinate subscriber stations, the base station receives the broadcast signal, including a broadcast signal in a frame, as shown in FIG. The subscriber station device that has taken in the data of the frame. FIG. 4 is an explanatory diagram showing a frame including a broadcast signal.

[0006]

However, in the conventional radio access system, the service area formed by one base station apparatus depends on the geographical conditions and the subscriber contract status from the start of the service. Is not always located in the subscriber station, there may be a sector that is not actually used between the subscriber station,
There is a problem that transmitting a broadcast signal to such an empty sector reduces communication efficiency.

For example, as shown in FIG.
When the base station apparatus is provided with the above antenna, only the sector 1 and the sector 4 may be used depending on geographical conditions and the like. In this case, the base station apparatus prepares for transmission and reception also for the unused sectors 2 and 3. Have to do
It was not an efficient use of communications. FIG. 5 is a schematic diagram showing an example of using the antenna of the base station apparatus when there is an unused sector.

The present invention has been made in view of the above circumstances, and has as its object to provide a radio access system capable of managing empty sectors and effectively utilizing only used sectors to improve communication efficiency. I do.

[0009]

SUMMARY OF THE INVENTION The present invention for solving the above-mentioned problems of the prior art is directed to a radio access system in which a base station apparatus is used only for a sector used based on a sector number corresponding to a subscriber. Is used for communication, and transmission to empty sectors is not performed.
A decrease in communication efficiency can be prevented.

Further, according to the present invention, in the radio access system, the base station apparatus has a subscriber management information table storing a sector number corresponding to the subscriber ID, and corresponds to the sector number in the subscriber management information table. Since communication is performed by selecting an antenna and transmission to an unused unused sector is not performed, a decrease in communication efficiency can be prevented.

Further, the present invention in the above radio access system updates the subscriber management information table from the management center, and can flexibly cope with a new subscription or a change.

Further, according to the present invention, in the above radio access system, when the subscriber management information table is updated with new subscription, a subscriber ID is set in the subscriber management information table of the base station apparatus from the management center, and all sectors are updated. Is controlled so as to be able to transmit and receive the sector antenna, and updates the sector number at the time of receiving a new authentication message from the new subscriber station by writing the sector number in the subscriber management information table. Automate table updates.

[0013]

Embodiments of the present invention will be described with reference to the drawings. In a radio access system according to an embodiment of the present invention, a base station apparatus includes a subscriber management information table storing a sector number corresponding to a subscriber ID, and an antenna corresponding to a sector number in the subscriber management information table. Since only the communication is performed by selecting only the unused sectors, transmission to unused unused sectors is not performed, so that a decrease in communication efficiency can be prevented.

Further, the radio access system according to the embodiment of the present invention updates the subscriber management information table from the management center, so that it can flexibly cope with a new subscription or a change. is there.

In the radio access system according to the embodiment of the present invention, when the subscriber management information table is updated with new subscription, the subscriber ID is set in the subscriber management information table of the base station device from the management center. Since the antennas of all sectors are controlled so as to be able to transmit and receive, and the sector number at the time of receiving a new authentication message from the new subscriber station is written and updated in the subscriber management information table. Update of the subscriber management information table can be automated.

A radio access system (this system) according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a configuration block diagram of a radio access system according to an embodiment of the present invention. FIG. 2 is a configuration block diagram showing a part of a base station apparatus according to the embodiment of the present invention. FIG. 4 is an explanatory diagram showing a subscriber management information table.

As shown in FIG. 1, the radio access system (this system) of the present embodiment includes a plurality of subscriber station devices (only the subscriber station device 1 in FIG. 1), a base station device 3,
A storage device 4 connected to the base station device 3, a backbone network 6 such as an ATM network using a dedicated line, a router (R) 5 connecting the backbone network 6 and the base station device 3, and a connection to the backbone network 6 And a management center (network management site) 7.

The storage device 4 connected to the base station device 3 has an SNMP (Simple Network Management Protocol).
l) An MIB (Management Information Base) is stored, and the subscriber management information table shown in FIG. 3 is stored in the MIB. As shown in FIG. 3, the subscriber management information table includes, for the subscriber ID, a MAC address which is a device address of the device, and the subscriber ID.
Is stored. FIG.
In the example, since the sector numbers 1 and 4 are set, it can be said that this is the same as the state where the sectors 1 and 4 in the sector antenna are used as shown in FIG.

FIG. 2 shows a specific example of the base station apparatus 3.
This will be described with reference to FIG. The base station device, as shown in FIG.
A sector antenna 14, a sector switch (sector SW) 11 for selecting the antenna, a switch control means (SW control means) 12 for controlling the sector SW 11, and a subscriber management information table 13 for managing a sector number.
I have at least.

In the base station apparatus 3, for example, the sector antenna 14 has four antennas 141 to 144 of sectors 1 to 4.
, And reception is performed while sequentially switching with a sector switch (sector SW) 11. In the case of a conventional base station apparatus, sectors 1 to 4 are sequentially switched using sector antennas evenly.

On the other hand, in the base station apparatus 3, the switch control means (SW control means) 12 refers to the subscriber management information table 13 and selects an antenna according to the sector number in the subscriber management information table 13. That is,
In the subscriber management information table of FIG. 3, since the sector numbers are 1 and 4, the antennas to be selected are sector 1 and sector 4.
It means that the antenna.

Next, the registration setting of the sector number in the subscriber management information table for specifying the antenna to be used will be described. The first method is to display a positional relationship between a base station device and a subscriber station device on a map on a screen at a maintenance terminal 7a of a management center (network management site) 7, and refer to the map to view the maintenance terminal 7a. , The sector number of the subscriber management information table is set and rewritten by the SNMP set operation.

The second method is a method of making automatic judgment at the time of new authentication. In this method, first, the management center 7
By the NMP set request, the base station apparatus is notified that a specific subscriber is installed.

After setting the new authentication, the base station apparatus sets the antennas of all the sectors to enable transmission and reception. Therefore,
Until now, when only the antennas 1 and 4 are used, all the antennas 1 to 4 are set to be able to transmit and receive.

When receiving a new authentication message from a new subscriber, the base station apparatus determines the sector number. And
The determined sector number is written and updated in the sector number corresponding to the subscriber ID of the new subscriber.

Then, the control is returned to the normal use of the sector.
However, assuming that the sector number of the new subscriber is, for example, a sector number “2” not shown in FIG. 3, the SW control means 12 controls the sector SW 11 so that the sector antenna 2 is also selected.

As described above, a broadcast signal (multicast, synchronization signal) is not transmitted to a sector that is not used for the subscriber station apparatus, thereby preventing a decrease in communication efficiency. Although the present invention has been described using a sector antenna as an antenna, the present invention can be realized using not only a sector antenna but also a directional antenna such as a horn antenna.

According to the radio access system of the embodiment of the present invention, the antenna used by the SW control means 12 based on the sector number in the subscriber management information table 13 in the storage device 4 to which the base station device 3 is connected. Since the sector SW11 is selected, there is an effect that transmission to an empty sector is not performed and a decrease in communication efficiency can be prevented.

Further, in this system, in the case of a new subscriber, all sectors can be transmitted and received, and the base station device sets the sector number at the time of receiving a new authentication message from the new subscriber station in the subscriber management information table. Since an antenna is selected based on the updated subscriber management information table, even if a new subscriber station is provided in an unused sector, the new subscriber is authenticated and subscriber management is performed. Update of the information table can be automated, and even after new subscription, communication is performed by selecting only the antenna to be used,
This has the effect of preventing a reduction in communication efficiency.

[0030]

According to the present invention, the base station apparatus is a radio access system that performs communication using only the used sector based on the sector number corresponding to the subscriber, so that the access to the empty sector can be performed. There is an effect that the communication efficiency is prevented from lowering without performing transmission.

Further, according to the present invention, the base station apparatus has a subscriber management information table for storing a sector number corresponding to a subscriber ID, and selects an antenna of the sector number in the subscriber management information table. Since the wireless access system performs communication, the wireless access system does not perform transmission to an unused sector that is not in use, and thus has the effect of preventing a reduction in communication efficiency.

Further, according to the present invention, since the wireless access system updates the subscriber management information table from the management center, it is possible to flexibly cope with a new subscription or a change.

According to the present invention, when the subscriber management information table is updated with a new subscription, the subscriber ID is set in the subscriber management information table of the base station apparatus from the management center, and the antennas of all the sectors are transmitted and received. The wireless access system is controlled so as to be able to write and update the sector number when receiving a new authentication message from a new subscriber station in the subscriber management information table. There is an effect that updating can be automated.

[Brief description of the drawings]

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

FIG. 2 is a configuration block diagram showing a part of a base station apparatus according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a subscriber management information table.

FIG. 4 is an explanatory diagram showing a frame including a broadcast signal.

FIG. 5 is a schematic diagram showing an example of using an antenna of a base station apparatus when there is an unused sector.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Subscriber station apparatus, 3 ... Base station apparatus, 4 ... Storage apparatus, 5 ... Router, 6 ... Backbone network, 7 ... Management center, 10 ... Base station module, 11 ... Sector switch (sector SW), 12 ... Switch Control means (SW control means), 13 ... subscriber management information table

Claims (5)

[Claims] 1. A radio station, wherein a sector number corresponding to a subscriber is stored, and a base station apparatus that performs communication using only a sector used based on the stored sector number is provided. Access system. 2. A wireless access system comprising: a plurality of base station devices connected to a backbone network; a subscriber station device performing wireless communication with the base station device; and a management center managing the network. The base station apparatus is provided with a subscriber management information table for storing a sector number corresponding to a subscriber ID, and is a base station apparatus that performs communication by selecting an antenna having a sector number in the subscriber management information table. Wireless access system. 3. A base station apparatus comprising: a sector antenna having a plurality of sector antennas; a sector switch for selecting the sector antenna; and switch control for selecting the sector switch according to a sector number in a subscriber management information table. And means.
The wireless access system as described. 4. The wireless access system according to claim 2, wherein the subscriber management information table is updated by changing a subscriber ID and a sector number from a management center. 5. When a new subscriber is set from the management center, the subscriber ID of the new subscriber is set in the subscriber management information table of the base station apparatus, and control is performed so that antennas of all sectors can transmit and receive. And updating a sector number when a new authentication message is received from a new subscriber station by writing the sector number in the subscriber management information table.
Or the wireless access system according to claim 3.