CN100574243C - Wireless slave unit - Google Patents

Abstract

A kind of wireless slave unit is provided, in the district of the wireless network that wireless master is managed, carry out wireless communication with other wireless slave units with the terminal wired connection, with carrying out wired network communication with the terminal of this machine wired connection, this wireless slave unit has: radio receiving and transmitting part (121), wireless receiving comprise the notification frame with the MAC Address of the MAC Address of the terminal of other wireless slave unit wired connections and these other wireless slave units; Storage part (112), the MAC Address of above-mentioned other wireless slave units that comprise in the above-mentioned notification frame with wireless receiving and the MAC Address of above-mentioned terminal are mapped and store; Wired acceptance division (120) receives the frame that sends from the terminal with this machine wired connection; And filter house (111), when the transmission target MAC (Media Access Control) address and the MAC Address that is stored in above-mentioned storage part of the above-mentioned frame of wired reception are inconsistent, abandon this frame.

Description

Wireless slave unit

Technical field

The present invention relates in the wireless network district of wireless master management, carry out wireless communication, carry out the wireless slave unit of wired network communication with the terminal of wired connection with other wireless slave unit.

Background technology

Figure 24 represents an example of the communication network that constitutes by wireless master, a plurality of wireless slave unit and with a plurality of terminals that LAN (local area network (LAN)) cable is connected with each wireless slave unit.

Wireless master 2600 is also referred to as " access point ", and it manages the WLAN of distinguishing in 2604, and the transfer of data of distinguishing between the wireless slave unit that exists in 2604 is carried out relaying.

And, 2600 pairs of wireless auspicious wireless receivings that carry out of wireless master from each wireless slave unit wireless transmission, each wireless slave unit that comprises in this radio frames and MAC (media interviews control) address of terminal are detected, and storing and managing will the MAC Address and wireless slave unit 2601,2602 MAC Address separately of the terminal of wired connection have been set up corresponding table respectively with wireless slave unit 2601,2602.

And wireless master 2600 is carried out the processing with the deletion from table of not detected once more at the appointed time MAC Address after once being detected in this table management.

Wireless slave unit 2601,2602 is also referred to as " station ", and it can carry out exchanges data mutually with wireless mode by wireless master 2600.

And wireless slave unit 2601,2602 has wired maincenter (hub) function respectively, and by being connected with a plurality of terminals with the LAN cable, can constitute with the wireless slave unit is the cable network at center.

Terminal 2611～2616 is computer, audio and video equipment etc. specifically, and it has the LAN splicing ear.Terminal 2611～2613 is connected with wireless slave unit 2601 through LAN cable 2621～2623 respectively, and terminal 2614～2616 is connected with wireless slave unit 2602 through LAN cable 2624～2626 respectively.

Terminal 2611～2616 by wireless slave unit 2601,2602 and wireless master 2600, can be carried out exchanges data respectively.

Wire communication between wireless slave unit 2601 and the terminal 2611～2613, and the wire communication between wireless slave unit 2602 and the terminal 2614～2616 are based on IEEE (institute of Electrical and Electronic Engineers) 802.3 standards.And the radio communication between wireless master 2600, the wireless slave unit 2601,2602 is based on the IEEE802.11 standard.

At this, the terminal 2611 of simple declaration and wireless slave unit 2601 wired connections, to the situation of terminal 2614 transmit frames of wireless slave unit 2602 wired connections under the action of each equipment.

In the frame that terminal 2611 sends, put down in writing the MAC Address of this machine in expression transmission source, as the MAC Address of the terminal 2614 that sends the destination and the MAC Address of carrying out the wireless slave unit 2601,2602 of relaying.

If wireless slave unit 2601 detects the above-mentioned frame that sends from terminal 2611, then confirm the behaviour in service of wireless channel by wireless slave unit 2601, if the wireless channel free time becomes radio frames to above-mentioned frame transform so, this radio frames is carried out wireless transmission to wireless master 2600.

Wireless master 2600 then reads the MAC Address that is included in this radio frames if receive from the above-mentioned radio frames of wireless slave unit 2601 to terminal 2614 wireless transmissions, contrasts with table in management.

If with the corresponding to MAC Address of MAC Address as the terminal 2614 that sends the destination, be stored in accordingly in the table with the MAC Address of wireless slave unit 2602, so, wireless master 2600 is to this radio frames of wireless slave unit 2602 wireless transmissions.If the MAC Address of terminal 2614 is not stored in the table, wireless master 2600 abandons this radio frames.

If from wireless master 2600 wireless transmissions above-mentioned radio frames, then wireless receiving the wireless slave unit 2602 of this radio frames it be transformed to be used for wired frame, carry out wired transmission to terminal 2614.

The action of above-described each equipment is disclosed at TOHKEMY 2002-94516 communique (4-7 page or leaf, Fig. 2, Fig. 8).

But in above-mentioned communication network, when terminal 2611 during to terminal 2614 transmit frames, the terminal 2614 of carrying out wired connection with wireless slave unit 2602 is cut off sometimes.For example, be under the situation of notebook computer in terminal 2614, the user not necessarily uses LAN cable 2624 all the time with terminal 2614 and wireless slave unit 2602 wired connections.

In the case, wireless slave unit 2601 does not know that terminal 2614 is cut off, so, the same with above-mentioned situation, the behaviour in service of wireless channel is confirmed, if wireless channel is idle, so, above-mentioned frame transform is become radio frames, send to wireless master 2600.

And if the MAC Address of terminal 2614 is not deleted from the table of managing, the wireless master 2600 that has then received the radio frames that sends from wireless slave unit 2601 sends these radio frames to wireless slave unit 2602.

That is, be cut off, still carry out the problem of useless radio communication although terminal 2614 occurs.

Compare with wired lan, the communication speed of WLAN is slow, so, to mix in the communication network that exists in WLAN and wired lan, radio communication becomes bottleneck easily, wishes to suppress aforesaid useless radio communication.

Summary of the invention

Therefore, the object of the present invention is to provide a kind of wireless slave unit, can be suppressed at respectively the useless radio communication that takes place in the communication between terminals with different wireless slave unit wired connections.

To achieve these goals, the wireless slave unit that the present invention relates to, in the district of the wireless network that wireless master is managed, with carrying out wired network communication with the terminal of this machine wired connection, carry out wireless communication with other wireless slave units with the other-end wired connection, this wireless slave unit has: wireless receiving portion, wireless receiving is by the notification frame of the additional additional information of described other wireless slave units, and this additional information comprises the MAC Address of above-mentioned other-end, the MAC Address of above-mentioned other wireless slave units, and the MAC Address of managing the wireless master of above-mentioned other wireless slave units; Storage part, storage package are contained in MAC Address, the MAC Address of above-mentioned other wireless slave units and the MAC Address of managing the unlimited main equipment of above-mentioned other wireless slave units of the above-mentioned other-end in the above-mentioned notification frame of wireless receiving; Wired acceptance division, wired reception from send with the terminal of this machine wired connection, comprise the frame that sends target MAC (Media Access Control) address; The configuration part, consistent with the MAC Address that is stored in above-mentioned storage part and manage above-mentioned other the MAC Address of MAC Address and the wireless master of this machine of management of wireless master of wireless slave unit when consistent at the transmission target MAC (Media Access Control) address of the frame of the wired reception of above-mentioned wired acceptance division, based on the MAC Address of above-mentioned other wireless slave units, carry out not by above-mentioned wireless master but between above-mentioned other wireless slave units and this machine, directly carry out the setting of radio communication; And filter house, when the transmission target MAC (Media Access Control) address and the MAC Address that is stored in above-mentioned storage part of the above-mentioned frame of wired reception are inconsistent, abandon this frame.

If adopt the wireless slave unit of said structure, then from the terminal of this wireless slave unit wired connection, to with the terminal transmit frame of other wireless slave unit wired connections the time, if do not store the MAC Address that sends the purpose terminal at above-mentioned storage part, then be considered as this transmission destination terminal and do not carry out wired connection with above-mentioned other wireless slave units, this frame of wireless transmission does not just abandon it, so, can suppress useless radio communication.

At this, above-mentioned wireless slave unit can also have: the 1st control part according to the notification frame of the new wireless receiving of above-mentioned wireless receiving portion, updates stored in the MAC Address of above-mentioned storage part; The 2nd storage part, storage package be contained in by in the frame of the wired reception of above-mentioned wired acceptance division, with the MAC Address of the terminal of this machine wired connection; The 2nd control part, condition according to the rules, deletion is stored in the MAC Address of above-mentioned the 2nd storage part; Notification frame preparing department when above-mentioned the 2nd storage part has been deleted MAC Address, perhaps appends when having stored new MAC Address at the 2nd storage part, makes the notification frame of the MAC Address that is included in above-mentioned the 2nd storage portion stores; And the wireless transmission part, the above-mentioned notification frame of having made to other wireless slave unit wireless transmissions.

By adopting this structure, reflected in above-mentioned storage portion stores and the MAC Address of the up-to-date wired connection situation of other wireless slave units can suppress useless radio communication to cut terminal.And, to the up-to-date connection state of other wireless slave units notice, so can suppress useless radio communication between other wireless slave units and the wireless master with the terminal of this machine wired connection.

At this, also can be that above-mentioned wireless slave unit also has: claim frame preparing department, make the claim frame that is used for to the transmission of above-mentioned other wireless slave unit request notification frame; And the wireless transmission part, the above-mentioned claim frame of having made to above-mentioned other wireless slave unit wireless transmissions; Above-mentioned wireless receiving portion wireless receiving is according to the claim frame of the above-mentioned wireless transmission notification frame from above-mentioned other wireless slave unit wireless transmissions.

If adopt this structure, need be the time, make claim frame and, can suppress the useless wireless transmission of notification frame to other wireless slave unit wireless transmissions with the connection state of the terminal of other wireless slave unit wired connections.

At this, also can be, in above-mentioned wireless receiving portion the notification frame from above-mentioned other wireless slave unit wireless transmissions being carried out wireless receiving, and passed through after the certain hour, above-mentioned claim frame preparing department makes the claim frame that sends to these other wireless slave units.That is to say, make claim frame termly and, can suppress the useless radio communication between other wireless slave units and the wireless master to other wireless slave unit wireless transmissions.

At this, also can be, also wireless receiving is from the claim frame of other wireless slave unit wireless transmissions in above-mentioned wireless receiving portion, and above-mentioned wireless slave unit also has: the 2nd storage part, storage package be contained in by in the frame of the wired reception of above-mentioned wired acceptance division, with the MAC Address of the terminal of this machine wired connection; And notification frame preparing department, at wireless receiving during above-mentioned claim frame, make the notification frame of the MAC Address that is included in above-mentioned the 2nd storage portion stores.

If adopt this structure, according to the claim frame that sends from other wireless slave units, to other wireless slave unit wireless transmission notification frame, so can suppress the useless wireless transmission of notification frame.

At this, also can be that the notification frame of above-mentioned wireless receiving portion wireless receiving is the ARP packets of information of having added additional information, comprises the MAC Address with the other-end of other wireless slave unit wired connections in this additional information.

If adopt this structure, can utilize ARP packets of information, to other wireless slave units notices and MAC Address from the terminal of machine wired connection as existing protocol.

At this, also can be, the wired reception of above-mentioned wired acceptance division from send with the terminal of this machine wired connection and be the ARP packets of information of destination with other-end with other wireless slave unit wired connections, above-mentioned wireless slave unit also has: extra cell is contained in the additional information of the MAC Address of above-mentioned the 2nd storage portion stores to above-mentioned ARP packets of information additional packets; And the wireless transmission unit, wireless transmission has added the ARP packets of information of said additional information.Also can be that the wireless network that above-mentioned wireless master is managed is based on the IEEE802.11e standard; Above-mentioned wireless slave unit also has the configuration part, when the transmission target MAC (Media Access Control) address of the frame of the wired reception of above-mentioned wired acceptance division is consistent with the MAC Address that is stored in above-mentioned storage part, carries out not by above-mentioned wireless master but between above-mentioned other wireless slave units and this machine, directly carry out the setting of radio communication.

In addition, the wireless slave unit that the present invention relates to, in the district of the wireless network that wireless master is managed, with carrying out wired network communication with the terminal of this machine wired connection, carry out wireless communication with other wireless slave units with the other-end wired connection, this wireless slave unit has: wireless receiving portion, and the wireless receiving notification frame comprises in the described notification frame once with above-mentioned other wireless slave unit wired connections but the MAC Address of cut terminal afterwards; Storage part, storage package are contained in the above-mentioned MAC Address in the above-mentioned notification frame of wireless receiving; Wired acceptance division, wired received frame from send with the terminal of this machine wired connection, comprise the frame that sends target MAC (Media Access Control) address; And filter house, when the MAC Address of the transmission target MAC (Media Access Control) address of the frame of wired reception and the terminal that is stored in above-mentioned storage part is consistent, abandon this frame.

By this structure, from with the terminal of this wireless slave unit wired connection, to with the terminal transmit frame of other wireless slave unit wired connections the time, if in above-mentioned storage portion stores send the MAC Address of destination terminal, then this transmission destination terminal is regarded as not having and above-mentioned other wireless slave unit wired connections, this frame wireless transmission is not just abandoned it, so can suppress useless radio communication.

At this, also can be that above-mentioned wireless slave unit also has: the 2nd storage part, storage package be contained in by in the frame of the wired reception of above-mentioned wired acceptance division, with the MAC Address of the terminal of this machine wired connection; Test section detects and the terminal of this machine wired connection is cut off; Notification frame preparing department makes notification frame, comprises MAC Address in the MAC Address that is stored in above-mentioned the 2nd storage part, detected cut terminal by above-mentioned test section in the above-mentioned notification frame; And the wireless transmission part, the above-mentioned notification frame of having made to above-mentioned other wireless slave unit wireless transmissions.

If adopt this structure, notify Ceng Yuben machine wired connections but cut thereafter terminal to other wireless slave units, so can suppress the useless radio communication between other wireless slave units and the wireless master.

Description of drawings

Fig. 1 is the figure that expression comprises an example of wired and wireless communication network.

Fig. 2 is the figure of formation of the wireless slave unit 3 of expression the 1st execution mode.

Fig. 3 is the figure of the formation of the wired receiving and transmitting part 120 of expression.

Fig. 4 is the figure of the formation of expression obtaining section 124.

Fig. 5 is the figure of expression by the data of port status storage part 141 processing.

Fig. 6 is the figure of an example of table content of the table data of expression the 1st table storage part 125 stored.

Fig. 7 is the figure of the formation of expression the 1st table control part 126.

Fig. 8 is the figure that constitute of expression by the notification frame of notice portion 127 making.

Fig. 9 is the figure of the formation of expression notice portion 127.

Figure 10 is the figure of the formation of expression notification frame obtaining section 129.

Figure 11 is the figure of the formation of expression the 2nd table control part 110.

Figure 12 is the figure of an example of table content of the table data of expression the 2nd table storage part 112 stored.

Figure 13 is the figure of the formation of expression filter house 111.

Figure 14 is the figure that expression comprises an example of wired and wireless communication network.

Figure 15 is the figure of formation of the wireless slave unit 3A of expression the 2nd execution mode.

Figure 16 is the figure that constitute of expression by the claim frame of claim frame generating unit 311 making.

Figure 17 is the figure of the formation of the notification frame in expression the 3rd execution mode.

Figure 18 is the figure that each wireless slave unit of expression is stored in an example of the cut-out terminal mac address table in the 2nd table storage part 112.

Figure 19 is the figure of formation of the wireless slave unit 3B of expression the 4th execution mode.

Figure 20 is the figure of the data structure of expression ARP packets of information.

Figure 21 is the figure of the data structure of expression link information.

One example of the sequential chart of the communication process when Figure 22 is the direct communication of carrying out between wireless slave unit.

One example of the sequential chart of the communication process when Figure 23 is the direct communication of carrying out between wireless slave unit.

Figure 24 is the figure that expression comprises an example of wired and wireless communication network.

Embodiment

Below, utilize accompanying drawing to describe embodiments of the present invention in detail.

＜the 1 execution mode 〉

＜summary 〉

Fig. 1 is that expression comprises wireless master, a plurality of wireless slave unit and the figure of an example of the communication network of a plurality of terminals of being connected with each wireless slave unit with the LAN cable.

The wireless master of recording and narrating in wireless master 1 and the background technology 2600 is identical.

Wireless slave unit 2,3,4 can carry out exchanges data mutually by wireless master 1.

And wireless slave unit 2,3,4 has wired maincenter function respectively, and by being connected with a plurality of terminals with the LAN cable, can constitute with the wireless slave unit is the cable network at center.

Terminal 11～19 is computer, audio and video equipment etc. specifically, has the LAN splicing ear.

Terminal 11～13 is connected with wireless slave unit 2 by LAN cable 21～23, and terminal 14～16 is connected with wireless slave unit 3 by LAN cable 24～26, and terminal 17～19 is connected with wireless slave unit 3 by LAN cable 27～29.

Terminal 11～19 can be carried out exchanges data by wireless slave unit 2～4 and wireless master 1 respectively.

Wire communication between wireless slave unit 2 and the terminal 11,12,13, the wire communication between wireless slave unit 3 and the terminal 14,15,16, and the wire communication between wireless slave unit 4 and the terminal 17,18,19 are based on the IEEE802.3 standard.And the radio communication between wireless master 1, the wireless slave unit 2～4 is based on the IEEE802.11 standard.

At this, the action summary of each wireless slave unit of simple declaration.

If each wireless slave unit is then obtained the MAC Address that is included in the terminal in this frame from the wired frame that receives of the terminal of wired connection.Each wireless slave unit is stored in the MAC Address that obtains the 1st table storage part that has separately.

And if the terminal of wired connection is cut off, each wireless slave unit is deleted the MAC Address of this terminal from the 1st table storage part.

If upgraded the memory contents of the 1st table storage part, each wireless slave unit is made the notification frame of the MAC Address of the MAC Address of the terminal that comprises storage and this machine, carries out wireless transmission to other wireless slave units.

The notification frame of each wireless slave unit wireless transmission, back by wireless master 1 by other each wireless slave unit wireless receivings.

Each wireless slave unit will be included in the MAC Address of other wireless slave units in the notification frame of wireless receiving and the MAC Address of terminal is mapped, and be stored in the 2nd table storage part.

Each wireless slave unit has filter house, if receive the frame that sends from the terminal of wired reception, filter house is with reference to above-mentioned the 2nd table storage part, the destination of this frame and with the inconsistent situation of MAC Address of the terminal of other wireless slave unit wired connections under, abandon this frame.

Fig. 2 is the figure that the function of expression wireless slave unit 3 constitutes.

Wireless slave unit 2 and 4 is formations identical with wireless slave unit 3, so omit its explanation.

Wireless slave unit 3 comprises wired receiving and transmitting part 120, radio receiving and transmitting part 121, radio frames transformation component 122, frame transform portion 123, obtaining section the 124, the 1st table storage part the 125, the 1st table control part 126, notice portion 127, antenna 128, notification frame obtaining section the 129, the 2nd table control part 110, filter house 111 and the 2nd table storage part 112.

PHY (abbreviating physical layer as)/MAC (abbreviating medium access control layer as) that 120 pairs of wired frames that received by terminal 14～16 of wired receiving and transmitting part carry out based on the IEEE802.3 standard handles, and the frame after handling is outputed to radio frames transformation component 122 and obtaining section.

And, by frame transform portion 123 incoming frames, carry out handling based on the PHY/MAC of IEEE802.3 standard, send to terminal 14～16.

At this, describe the internal actions of wired receiving and transmitting part 120 in detail with Fig. 3.

＜wired receiving and transmitting part 120 〉

Fig. 3 is the figure of the formation of the wired receiving and transmitting part 120 of expression.

As shown in the drawing, wired receiving and transmitting part 120 comprises input/output port 130a～d, PHY/MAC handling part 131a～d, switch control part 132, MAC handling part 133, input terminal 134 and the lead-out terminal 135～137 as connecting interface.

Wired frame that PHY/MAC handling part 131a will receive from terminal 14 by input/output port 130a is as input, and wired frame of input is carried out handling based on the PHY/MAC of IEEE802.3 standard, and inter-process is outputed to switch control part 132 with frame.

Inter-process with in the frame and data put down in writing together about sending the information of source MAC and target MAC (Media Access Control) address.

And PHY/MAC handling part 131a will use frame as input from the inter-process of switch control part 132 outputs, carry out handling based on the PHY/MAC of IEEE802.3 standard, send to terminal 14 through input/output port 130a.

If imported from the inter-process frame of PHY/MAC handling part 131a output, switch control part 132 carries out relaying to PHY/MAC handling part 131b～d and MAC handling part 133.

Then, when switch control part 132 is used frame in the relaying inter-process, be expression to export to lead-out terminal 136 with the port numbers of frame from the inter-process of input/output port 130a input.And switch control part 132 is to the connection status signal of the connection status of lead-out terminal 137 output expression input/output port 130a～d.

The connection status signal is a signal of each input/output port 130a～d being judged connection status.

MAC handling part 133 outputs to lead-out terminal 135 according to making mac frame (being designated hereinafter simply as frame) by the inter-process of switch control part 132 relayings with frame.

And MAC handling part 133 as input, outputs to switch control part 132 to the frame of importing from input terminal 134 to inter-process with frame.

By above action, wired receiving and transmitting part 120 carries out the transmitting-receiving of wired frame.

At this, turn back to Fig. 2, other function portions are described.

Radio frames transformation component 122 outputs to radio receiving and transmitting part 121 to the radio frames of the frame transform of input one-tenth based on the IEEE802.11 standard.

121 pairs of radio frames from 122 inputs of radio frames transformation component of radio receiving and transmitting part are carried out digital modulation, are transformed into the transmission signal of the frequency band that carries out wireless transmission, carry out wireless transmission by antenna 128.

And radio receiving and transmitting part 121 as input, carries out demodulation to the wireless signal that arrives by antenna 128 wireless receivings to the wireless signal of importing, and radio frames is outputed to frame transform portion 123 and notification frame obtaining section 129.

From the radio frames of radio receiving and transmitting part 121 input, be transformed into by frame transform portion 123 and be used for wired frame, be input to wired receiving and transmitting part 120.

124 frames from wired receiving and transmitting part 120 outputs of obtaining section, port numbers, connection status signal are as input.

Obtaining section 124 is utilized frame, port numbers, the connection status signal of input, output lastest imformation (port numbers, more new data) and update request signal.

At this, utilize Fig. 4 to describe the internal actions of obtaining section 124 in detail.

Fig. 4 is the figure of the formation of expression obtaining section 124.

As shown in the drawing, obtaining section 124 comprises joint detection portion 140, port status storage part 141, registration control part 142, transmission source address obtaining section 143, register information notice portion 144, cuts off test section 145, deletion information notification part 146, input terminal 147～149 and lead-out terminal 150～152.

Joint detection portion 140 from the connection status signal of input terminal 149 as input, the new connection that goes out 120 couples of input/output port 130a～d of wired receiving and transmitting part according to the connection status input of input.

For example,, be defined as " 0 " when not connecting, be defined as under the situation of " 1 " when connecting,, can detect the connection that makes new advances by detecting from " 0 " variation to " 1 " as the connection status signal.

If joint detection portion 140 detects the new connection to input/output port 130a～d, then the port numbers of the input/output port 130a～d that has detected new connection and joint detection signal are outputed to port status storage part 141.

Port status storage part 141 from the port numbers of joint detection portion 140 outputs and joint detection signal as input, store the connection status of each input/output port 130a～d of wired receiving and transmitting part 120.

Specifically, as shown in Figure 5, input/output port 130a～d port numbers and port status associated store.

Port status keeps " 0 " or " 1 " value.

" 1 " represents new connection status, and " 0 " represents other state.

And port status storage part 141 makes the value change of port status according to 2 kinds of input signals.One is the joint detection signal from 140 inputs of joint detection portion, and another is the control signal from 142 inputs of registration control part.

Port status storage part 141 will be " 1 " with the port numbers corresponding port state exchange from 140 inputs of joint detection portion if confirm the input of joint detection signal simultaneously.

In addition, port status storage part 141 will be " 0 " with the port numbers corresponding port Status Change from 142 inputs of registration control part as if the input that confirms " 1 " as control signal simultaneously.

Moreover port status storage part 141 outputs to registration control part 142 to the port status of each port numbers of storage.

Registration control part 142 from port status storage part 141 input port state, is made control signal, the control signal of output slogan and making according to the port numbers and the port status of input from input terminal 148 input slogans.

The control signal that registration control part 142 is exported is, if the port status of the port numbers of corresponding input is " 1 ", " 1 " signal of output indication processing execution if port status is " 0 ", is exported indication untreated " 0 " signal so so.

Port numbers and control signal by 142 outputs of registration control part are imported into register information notice portion 144 and port status storage part 141.

Parallel with the port numbers of registration control part 142 and the output of control signal, transmission source address obtaining section 143 obtains the transmission source MAC from the frame by input terminal 147 inputs, the MAC Address that obtains is outputed to register information notice portion 144.

144 inputs of register information notice portion are from control signal, the port numbers of registration control part 142 outputs and the MAC Address of exporting from transmission source address obtaining section 143.

If from the control signal of registration control part 142 inputs are " 1 ", register information notice portion 144 outputs to lead-out terminal 150 to the port numbers from 142 inputs of registration control part so, outputing to lead-out terminal 151 as new data more, the update request signal is outputed to lead-out terminal 152 from the MAC Address of transmission source address obtaining section 143 input.

Cut off test section 145 from input terminal 149 input connection status signals, from the connection status signal of input, can detect the cut-out of each terminal that is connected with each input/output port 130a～d of wired receiving and transmitting part 120.

For example, change to " 0 " from " 1 ", can detect cut-out by detecting the connection status signal.

Cut off test section 145 if detect cut-out, then the port numbers of this input/output port 130a～d is outputed to deletion information notification part 146 as cutting off port numbers.

146 cut-out port numbers of exporting from cut-out test section 145 of deletion information notification part are as input, if imported the cut-out port numbers, then this port numbers is outputed to lead-out terminal 150, the data that are defined as " connect " are outputed to lead-out terminal 151 as new data more, update request information is outputed to lead-out terminal 152.

And, do not handle simultaneously in order to make register information notice portion 144 and deletion information notification part 146, between register information notice portion 144 and deletion information notification part 146, receive and dispatch waiting signal.

Register information notice portion 144 and deletion information notification part 146 were confirmed the reception of waiting signal before carrying out various processing.If do not receive waiting signal, when carrying out processing, send waiting signal in the processing execution.And, before handling, confirmed under the situation of reception of waiting signal, wait until that always the reception of waiting signal finishes.

After waiting signal receives and finishes, when carrying out processing, send waiting signal in the processing execution.

By above action, obtaining section 124 is utilized frame, port numbers, the connection status signal of input, to the 1st table control part 126 output lastest imformations (port numbers, more new data) and update request signal.And the update request signal also outputs to notice portion 127.

The 1st table control part 126 is from the port numbers of obtaining section 124 outputs, more new data, update request signal be as input, if detect the input of update request signal, then according to the port numbers of same input, new data more, his-and-hers watches storage part 125 writes processing.

The table data of the table that the 125 storage example expressions of the 1st table storage part are shown in Figure 6.

Fig. 6 is the figure of an example of the expression table content that is stored in the table data in the 1st table storage part 125.

Table shown in this figure is made of port numbers and terminal MAC Address, and port numbers is corresponding to the input/output port 130a～d of wired receiving and transmitting part 120, and the MAC Address of the terminal that is connected with each input/output port 130a～d is as terminal MAC Address record.

And when not connecting, record is defined as the data of " not connecting ".

Specifically, in the 1st table storage part 125, corresponding each port numbers is come the storage area of memory allocated address and MAC Address, the MAC Address of the terminal that is connected with each input/output port 130a～d in corresponding area stores.

And, 126 data request signals of exporting from notice portion 127 of the 1st table control part are as input, if detect the input of data request signal, then read in the MAC Address that is stored in the 1st table storage part 125 successively, export as the table data, when beginning output table data, output output commencing signal.

At this, describe the internal actions of the 1st table control part 126 in detail with Fig. 7.

Fig. 7 is the figure of the formation of expression the 1st table control part 126.

As shown in the drawing, the 1st table control part 126 has memory address transformation component 160, writes handling part 161, memory address distribution department 162, read in handling part 163, input terminal 164～167 and lead-out terminal 168,169.And though not shown, the 1st table control part 126 and the 1st table storage part 125 are connected by bus.

Memory address transformation component 160 from the port numbers of input terminal 166 as input, the port numbers output of input has been distributed the memory address of this port numbers at table storage part 125.Memory address from 160 outputs of memory address transformation component is input to and writes handling part 161.

Write handling part 161 from the update request signals of input terminal 164, from the more new data of input terminal 165 and from the memory address of memory address transformation component 160 as input, if detect the update request signal of input, the 1st table storage part 125 is carried out the processing that writes that memory address to same input writes new data more.

By above memory address transformation component 160, write the action of handling part 161,126 pairs the 1st tables of table storage part storage part 125 writes processing.

Memory address distribution department 162 from the data request signal of input terminal 167 as input, if detect data request signal, then the memory address in 125 pairs of whole port number assignment of the 1st table storage part is outputed to and reads in the handling part 163.

Read in handling part 163 from the data request signal of input terminal 164 and from the memory address of memory address distribution department 162 as input, if detect data request signal, then read in data on the memory address of memory address distribution department 162 input successively from the 1st table storage part 125, after reading in end, output to lead-out terminal 168 as the table data, with table data output beginning synchronised, will export commencing signal to lead-out terminal 169 outputs.

By above memory address distribution department 162, read in the action of handling part 163,126 pairs the 1st tables of the 1st table control part storage part 125 reads in processing.

And, write handling part 161 execution write processing during, to reading in handling part 163 output waiting signals.Read in handling part 163 during the input waiting signal, interrupt reading in processing from the data of the 1st table storage part 125.Like this, do not carry out simultaneously processing is handled and read in to the 1st writing of table storage part 125.

Table data and output commencing signal from 126 outputs of the 1st table control part are input to notice portion 127.

Notice portion 127 as input, makes data request signal to the update request signal of exporting from obtaining section 124 according to the update request signal of input, outputs to the 1st table control part 126.

And notice portion 127 is the table data of exporting from the 1st table control part 126 and export commencing signal as input, if detect notice portion output commencing signal, then making comprises the notification frame of the content of showing data, outputs to radio receiving and transmitting part 121.

Fig. 8 is the figure that constitute of expression by the notification frame of notice portion 127 making.

Notification frame is made of the frame format based on the IEEE802.11 standard, and target MAC (Media Access Control) address is set at the broadcasting target.

The auspicious main body (FrameBody) of storage data comprises notification frame identifying information 175, management information 176, terminal list data 177.

Notification frame identifying information 175 is fixed length datas, and it is the data of notification frame that record the other side can discern.

Management information 176 is fixed length datas, has put down in writing the MAC Address of wireless slave unit 3.

Terminal list data 177 are fixed length datas, have put down in writing the MAC Address of whole port numbers successively from port numbers " 1 " beginning.

Wired receiving and transmitting part 120 has 4 input/output port 130a～d, can put down in writing 4 MAC Address.

At this, utilize Fig. 9 to describe the internal actions of notice portion 127 in detail.

Fig. 9 is the figure of the formation of expression notice portion 127.

As shown in the drawing, notice portion 127 has delay circuit 180～182, identifying information preparing department 183, management information preparing department 184, notification frame preparing department 185, input terminal 186～188 and lead-out terminal 189,190.

Delay circuit 180 from the update request signal of input terminal 186 as input, make the update request signal delay of input, output to lead-out terminal 189 as data request signal.

The data request signal of output is imported into the 1st above-mentioned table control part 126.

The update request signal that sends from obtaining section 124 does not directly use as data request signal, but passes through the delay of delay circuit 180, avoids writing processing and reading in processing in the 1st table control part 126 to take place simultaneously.

Identifying information preparing department 183 from the output commencing signal of input terminal 187 as input, if detect the output commencing signal, then make the notification frame identifying information 175 of notification frame, output to notification frame preparing department 188.

And, the delayed circuit 182 of output commencing signal is input to management information preparing department 184, and delay circuit 182 will be exported commencing signal and be deferred to identifying information preparing department 183 till the time of the end of input of notification frame preparing department 185 input notification frame identifying informations 175.

Management information preparing department 184 then makes management information 176 (MAC Address of wireless slave unit 3) if detect the output commencing signal of delayed circuit 182 inputs, outputs to notification frame preparing department 185.

Delay circuit 181 from the table data of input terminal 188 as input, postpone to handle, the table data of delay are outputed to notification frame preparing department 185.

The delay that delay circuit 181 carries out is handled, and makes the time of table data delay be, on the time of delay of being set by delay circuit 182, adds that management information preparing department 184 has imported the time of management information 176 to notification frame preparing department 185.

Input sequence is pressed in conjunction with the notification frame identifying information of importing from identifying information preparing department 183 175, from the management information 176 of management information preparing department 184 inputs and the table data of importing from delay circuit 181 by notification frame preparing department 185, make by in conjunction with the notification frame of the data of making, output to lead-out terminal 190 as auspicious main body.

By above action, notice portion 127 makes and comprises the notification frame that is stored in the MAC Address in the 1st table storage part 125, the notification frame that output is made.

Notification frame from 127 outputs of notice portion is input to radio receiving and transmitting part 121, and 121 pairs of these notification frame of radio receiving and transmitting part are carried out digital modulation, are transformed into the transmission signal of the frequency band of wireless transmission, carry out wireless transmission from antenna 128.

129 radio frames of exporting from radio receiving and transmitting part 121 of notification frame obtaining section are as input, whether the radio frames of judging input is notification frame, in the result who judges is under the situation of notification frame, obtains the management information 176 and the terminal list data 177 that are included in this notification frame.

Moreover with acquired information together, notification frame obtaining section 129 exports that more new data, table are obtained source address, the update request signal.

At this, describe the internal actions of notification frame obtaining section 129 in detail with Figure 10.

Figure 10 is the figure of the formation of expression notification frame obtaining section 129.

As shown in the drawing, notification frame obtaining section 129 has notification frame test section 121, update request portion 212, switch 213, input terminal 214 and lead-out terminal 215～217.

Notification frame test section 211 from the radio frames of input terminal 214 as input, confirm whether comprise notification frame identifying information 175 in the radio frames of input, judge whether it is notification frame thus.

In the result who judges is under the situation of notification frame, and detection signal is outputed to update request portion 212.And notification frame test section 211 reads management information 171 and the terminal list data 172 that are included in the notification frame, and it as new data more, is outputed to lead-out terminal 215 and switch 213.

Update request portion 212 is if imported detection signal from notification frame test section 211, then to lead-out terminal 217 output update request signals, to switch 213 output control signals.

Switch 213 is obtained source address according to control signal to the table as management information 176 that lead-out terminal 216 is only exported in the more new data of input.

By above action, notification frame obtaining section 129 judges whether radio frames is notification frame, if notification frame, more new data, table is obtained source address and the update request signal outputs to the 2nd table control part 110.

The 2nd table control part 110 is then obtained source address based on the more new data and the table of same input if detect the update request signal, and the 2nd table storage part 112 is write processing.

The 2nd table storage part 112 is the table data of storage representation table shown in Figure 12 for example.

Figure 12 is the figure of an example of the table content of the expression table data that are stored in the 2nd table storage part 112.

Table shown in this figure is made of the raw column data of fixed size, in the 2nd table storage part 112, distribute the storage area and the memory address of fixed size successively according to the 1st order that is listed as of the 2nd row, the 3rd row, the 4th row, the 5th row, the 2nd row from the 1st row of the 1st row.

In the table shown in this figure, can store the terminal list of obtaining with the unit of going, can be in 5 MAC Address of each row storage.Obtained the table of terminal list in the 1st storage area storage that is listed as and obtained source MAC, be i.e. the MAC Address of other wireless slave units.

Then, can store 4 MAC Address successively from the 2nd row, as terminal list.For example in the terminal list of wireless slave unit 2, stored each MAC Address of terminal 11～13.

And, be stored in the 2nd the table storage part 112 table in, as initial value, at the 1st line item the MAC Address of wireless master 1.

The 2nd table control part 110 from the data request signal of filter house 111 as input, if confirm the input of data request signal, then read in the MAC Address that is stored in the 2nd table storage part 112 successively, output to filter house 111, in the output MAC Address, output output allows signal.

At this, describe the internal actions of the 2nd table control part 110 in detail with Figure 11.

Figure 11 is the figure of the formation of expression the 2nd table control part 110.

As shown in the drawing, the 2nd table control part 110 has memory address management department 230, writes destination address distribution department 231, writes handling part 232, reads in destination address distribution department 233, reads in handling part 234, input terminal 235～238, and lead-out terminal 239,240.

Though not shown, the 2nd table control part 110 and the 2nd table storage part 112 are connected by bus.

The processing that writes of the 2nd table control part 110 at first, is described.

Memory address management department 230 will distribute to that each table is obtained the memory address of source MAC in the storage part 112 and be mapped in the value of the MAC Address of the area stores of this memory address at the 2nd table and manage.

Memory address management department 230 obtains source address from input terminal 236 input tables, from input terminal 237 input update request signals, if detect the update request signal, stored the memory address that the table of same input is obtained the value of source address to writing 231 outputs of destination address distribution department.

For example, be under the situation of situation shown in Figure 12 at the memory state of the 2nd table storage part 112 storage, obtain source address as table, to the value of memory address management department 230 inputs as " STA (3) " of the MAC Address of wireless slave unit 3.

At this moment, memory address management department 230 output stores the memory address (table of in the table shown in this figure, distributing to the row of " STA (3) " is obtained the memory address of target MAC (Media Access Control) address) of the storage area of " STA (3) " value.

If the table of input is obtained source address and is not recorded in this table, then new memory allocated address, and export this memory address.Then, the memory address of output and the table of input are obtained source address (MAC Address) management that is mapped.

For example, the memory state that is stored in the 2nd table storage part 112 is under the situation of situation shown in Figure 12, when obtaining source address and imported the value of " STA (5) " as table, the table that the 5th row that becomes " NOENTRY " is distributed in output is obtained the memory address of source MAC.

Write destination address distribution department 231 if imported memory address from memory address management department 230, with this memory address together, distribute to the memory address of the 2nd table storage part 112 of table data (1), table data (2), table data (3), table data (4) to writing handling part 232 outputs successively.

Write handling part 232 from input terminal 237 input update request signals, import more new data from input terminal 235, from writing address distribution department 231 input memory addresss, if detect the input of update request signal, then carry out the processing that writes that memory address to same input writes new data more successively.

By above memory address management department 230, write destination address distribution department 231, write the action of handling part 232, the 2nd table control part 110 writes processing.

Below the processing of reading in of control part 110 is shown in explanation the 2nd.

Memory address management department 230 from the data request signal of input terminal 238 as input, when detecting the input of data request signal, distribute to the memory address that obtains source MAC at the table of the 2nd table storage part 112 last new records to reading in 233 outputs of destination address distribution department.

For example, be under the situation of situation shown in Figure 12 at the memory state that is stored in the 2nd table storage part 112, the memory address of the value of having stored " STA (4) " is input to reads in destination address distribution department 233.

Read in destination address distribution department 233 from input terminal 238 input update request signals, from memory address management department 230 input memory addresss, when detecting the input of data request signal, export successively and distribute to the memory address that table is obtained source MAC, table data (1), table data (2), table data (3), table data (4) to reading in handling part 234, until become the row that table is obtained source MAC from the memory address of memory address management department 230 input.

Read in handling part 234 from input terminal 238 input data request signals, from reading in destination address distribution department 233 input memory addresss.

If read in handling part 234 and detect data request signal, then read in data (MAC Address) on the memory address of same input successively from the 2nd table storage part 112.

After reading in end, read in handling part 234 MAC Address of reading is outputed to lead-out terminal 239,, allow signal to lead-out terminal 240 dateouts with the output synchronised of the MAC Address of reading.

And it is to be varied to " 1 " value from " 0 " when the output of MAC Address begins that data allow signal, keeps " 1 " in output, is varied to the signal of " 0 " when end of output from " 1 ".

By above memory address management department 230, read in destination address distribution department 233, read in the action of handling part 234, the 2nd table control part 110 reads in processing.

And, write handling part 232 during execution writes processing, to reading in handling part 234 output waiting signals.On the other hand, read in handling part 234 during waiting signal is by " 1 " input, interrupt reading in processing to the data of the 2nd table storage part 112.Like this, do not carry out simultaneously handling and read in processing to the 2nd writing of table storage part 112.

The MAC Address and the data of 110 outputs of the 2nd table control part allow signal to be input to filter house 111.

, to filter house 111 incoming frames this frame is stored in the buffer storage from wired receiving and transmitting part 120, judges whether the target MAC (Media Access Control) address of this frame is stored in the 2nd table storage part 112.The result who judges, if record, then output is stored in the frame in the buffer storage, the result of judgement if there is not record, then abandons the frame of storing in the buffer storage.

At this, utilize Figure 13 to describe the internal actions of filter house 111 in detail.

Figure 13 is the figure of the formation of expression filter house 111.

As shown in the drawing, filter house 111 has buffer storage control part 250, buffer storage 251, destination address obtaining section 252, comparing section 253, sends control part 254, switch 255, input terminal 256,258,259 and lead-out terminal 257,260.

If buffer control part 250 detects the frame by input terminal 256 inputs, then be stored in the buffer 251, and to destination address obtaining section 252 output frames, to lead-out terminal 257 dateout request signals.

From the data request signal of buffer control part 250 output, output to the processing of reading in that the 2nd table control part 110, the 2 table control parts 110 are carried out the MAC Address that is stored in the 2nd table storage part 112.The MAC Address of reading in then, is input to comparing section 253 from the 2nd table control part 110 through input terminal 258.And data allow signal to be input to through input terminal 259 and send control part 254.

Destination address obtaining section 252 obtains target MAC (Media Access Control) address from the frame by 250 inputs of buffer storage control part, to comparing section 253 outputs.

Comparing section 253 is successively relatively from the target MAC (Media Access Control) address of destination address obtaining section 252 inputs and the MAC Address of importing through input terminal 258.

Comparing section 253 is the compare result signal of result relatively as " 0 " or " 1 ", to sending control part 254 outputs.For example, under the situation of unanimity, output " 1 " signal, under inconsistent situation, output " 0 " signal.

Send control part 254 and allow signal from input terminal 259 input data.

Send control part 254 and allow the data of input signal to be changed to " 1 " as triggering, begin to monitor compare result signal, monitor till data allow signal to be changed to " 0 " from " 1 " always from comparing section 253 inputs from " 0 ".

The result of above-mentioned supervision if compare result signal becomes the state (comparative result unanimity) of " 1 ", then is changed to " ON " to switch 255, and the frame in order buffer storage control part 250 output buffer storages 251.

On the other hand, the result of supervision is the state of " 1 " if not compare result signal, sends to buffer storage control part 250 and abandons order, abandons the frame that buffer storage 251 is stored.

Buffer storage control part 250 is according to from the output command that sends control part 254 or abandon order and handle.That is, when buffer storage control part 250 receives output command from sending control part 254, take out the frame that is stored in buffer storage 251, export this frame.Be imported into switch from the frame of buffering memory controller 250 outputs, output to lead-out terminal 260 by " opening " state of switch 255.

And buffer storage control part 250 abandons order as if receiving from transmission control part 254, does not then export the frame that is stored in the buffer storage 251, just it is abandoned.

By above action, 111 pairs of frames from wired receiving and transmitting part 120 inputs of filter house filter.

Be input to radio frames transformation component 122 from the frame of filter house 111 outputs.

Radio frames transformation component 122 outputs to radio receiving and transmitting part 121 to the radio frames of the frame transform of input one-tenth based on the IEEE802.11 standard.

121 pairs of radio frames from 122 inputs of radio frames transformation component of radio receiving and transmitting part are carried out digital modulation, are transformed into the transmission signal of the frequency band of wireless transmission, send from antenna 128.

＜the 2 execution mode 〉

Below, the 2nd execution mode of the present invention is described.

Figure 14 is that expression comprises wireless master, a plurality of wireless slave unit and the figure of an example of the communication network of a plurality of terminals of being connected with each wireless slave unit with the LAN cable.

The difference of the 2nd execution mode and the 1st execution mode is, each wireless slave unit is to other wireless slave unit wireless transmission claim frames, and this asks the MAC Address of the terminal of auspicious request and other wireless slave unit wired connections.

Wireless receiving each wireless slave unit of claim frame to wireless transmission the wireless slave unit of claim frame, wireless transmission is in the notification frame of the 1st execution mode explanation.

Except the wireless slave unit 2A～4A shown in this figure, other contents with the 1st execution mode explanation are identical, so, below difference only is described.

Figure 15 is the figure of the formation of expression wireless slave unit 3A.

Wireless slave unit 2A and 4A, identical with the structure of wireless slave unit 3A, so omit explanation.

And, for the structural element identical, give identical mark with the 1st execution mode, omit its detailed description.

Wireless slave unit 3A comprises wired receiving and transmitting part 120, radio receiving and transmitting part 121, radio frames transformation component 122, frame transform portion 123, obtaining section the 124, the 1st table storage part the 125, the 1st table control part 126, the 127A of notice portion, antenna 128, notification frame obtaining section the 129, the 2nd table control part 110, filter house the 111, the 2nd table storage part 112, claim frame generating unit 311 and claim frame test section 330.

Claim frame generating unit 311 has timer, makes claim frame 300 according to periodic timing.

Figure 16 is the figure that constitute of expression by the claim frame of claim frame generating unit 311 making.

Claim frame shown in this figure is made of the frame format based on the IEEE802.11 standard, and target MAC (Media Access Control) address is set to the broadcasting purpose.

And the auspicious main body of storage data is made of claim frame identifying information 320, request source MAC Address 321.

Claim frame identifying information 320 is data of fixed length, has put down in writing and has discerned the data that this radio frames is a claim frame.

Request source MAC Address 321 is data of fixed length, has put down in writing the MAC Address of this machine.

Claim frame by claim frame generating unit 311 is made is input to radio receiving and transmitting part 121, and the claim frame of 121 pairs of inputs of radio receiving and transmitting part carries out digital modulation, is transformed into the transmission signal of the frequency band of wireless transmission, sends from antenna 128.

Claim frame test section 330 from the radio frames of radio receiving and transmitting part 121 as input, confirm in the radio frames of input, whether to comprise claim frame identifying information 320, and judge whether this radio frames is claim frame.

The result who judges, being judged to be is under the situation of claim frame, obtains request source MAC Address 321 from claim frame, as the output of notice target MAC (Media Access Control) address.And claim frame test section 330 is to the 127A of notice portion dateout request signal.

The 127A of notice portion directly outputs to the 1st table control part 126 to data request signal.

The 1st table control part 126 then reads in the MAC Address that is stored in table storage part 125 successively if detect the input of data request signal, exports to the 127A of notice portion as the table data.

Later action is identical with the 1st execution mode, the Therefore, omited explanation.

By above action, the 127A of notice portion makes and comprises the notification frame that is stored in the MAC Address in the 1st table storage part 125, and the notification frame of making is outputed to radio receiving and transmitting part 121.

121 pairs of notification frame from the 127A of notice portion input of radio receiving and transmitting part are carried out digital modulation, are transformed into the transmission signal of the frequency band of wireless transmission, from antenna 128 wireless transmissions.

＜the 3 execution mode 〉

The following describes the 3rd execution mode of the present invention.

The difference of the 3rd execution mode and the 1st execution mode is, each wireless slave unit comprises the later cut terminal in the terminal of wired connection in notification frame MAC Address (hereinafter referred to as " cutting off the terminal MAC Address ") is wirelessly transmitted to other wireless slave units; And, wireless receiving each wireless slave unit of this notification frame, the MAC Address of the wireless slave unit that has sent this notification frame be included in cut-out terminal MAC Address in this notification frame and be mapped and be stored in the 2nd table storage part 112, when the wired frame that has received from the terminal of wired connection, if the target MAC (Media Access Control) address of this frame is consistent with the cut-out terminal MAC Address that is stored in the 2nd table storage part 112, then abandon the filtration of this frame.

Figure 17 is the figure of the formation of the notification frame in expression the 3rd execution mode.

Notification frame shown in this figure is made of the frame format based on the IEEE802.11 standard, and target MAC (Media Access Control) address is set to the broadcasting purpose.

And the frame main body of storage data comprises notification frame identifying information 322, cuts off terminal MAC Address 323.

Notification frame identifying information 322 is fixed length datas, and having put down in writing that other wireless slave units can discern is the data of notification frame.

Cutting off terminal MAC Address 323 is fixed length datas, has put down in writing from the MAC Address of the terminal of wireless slave unit cut-out.

Figure 18 be expression according to the notification frame of each wireless slave unit wireless receiving, be stored in the figure of an example of table of the cut-out terminal MAC Address of the 2nd table storage part 112.

For example, wired to have received with MAC Address (1) be under the situation of frame of destination to the wireless slave unit of storing the table shown in this figure from the terminal of wired connection, owing at the 2nd table storage part MAC Address (1) is being stored as cutting off the terminal MAC Address, so the filter house that this wireless slave unit had abandons this frame.

＜the 4 execution mode 〉

The 4th execution mode of the present invention below is described.

The difference of the 4th execution mode and the 1st execution mode is that wireless slave unit is attached to the content of the notification frame of notifying to other wireless slave units in ARP (address resolution protocol) packets of information, like this to other wireless slave units notices; And the WLAN of the 4th execution mode can just can directly and not carried out radio communication by wireless slave unit based on the IEEE802.11e standard between the wireless slave unit.

Though not shown, change at this wireless slave unit shown in Figure 1 2～4 and to read to be wireless slave unit 2B～4B, the wireless slave unit 2B～4B of the 4th execution mode is described.

Figure 19 is the figure of the formation of expression wireless slave unit 3B.

Wireless slave unit 2B is identical with the structure of wireless slave unit 3B with 4B, so omit explanation.

And, for the structural element identical, give same tag with the 1st execution mode, omit its detailed description.

Wireless slave unit 3B has wired receiving and transmitting part 120, radio receiving and transmitting part 121, link information analysis unit 400, link information appendix 401, link information storage part 402, packets of information identification part 403, band setting packets of information handling part 404, wireless link setting management department 405 and directly links (DirectLink) judging part 406.

Wired receiving and transmitting part 120 is identical with the 1st execution mode with radio receiving and transmitting part 121.

Packets of information identification part 403 has following function: according to the data by radio receiving and transmitting part 121 or 120 inputs of wired receiving and transmitting part, identification band setting packets of information and ARP packets of information.

Link information analysis unit 400 has being included in function from the ARP packets of information of packets of information identification part 403 transmission, that the required information of setting of direct communication is resolved between wireless slave unit.

Link information appendix 401 has to the function from the required information of the direct communication between the additional wireless slave unit of the ARP packets of information of link information analysis unit 400 transmission.

Figure 20 is the figure of expression as data structure communication protocol, the ARP packets of information of IETF (the Internet engineering duty forced branch) regulation, and Figure 21 is the figure that expression is attached to the data structure of the link information in the ARP packets of information.

Link information is made of the MAC Address of wireless master, the MAC Address of this machine (wireless slave unit) and this three part of MAC Address of the terminal of having issued the ARP packets of information.

The MAC Address of wireless master is used to discern and belongs in the BSS where, and which wireless slave unit MAC Address of this machine and the MAC Address of having issued the terminal of ARP packets of information are used to discern and are being connected by cable network with terminal.

Link information storage part 402 is according to the indication from link information analysis unit 400, the table that storage manages the connection status of terminal.

Band setting packets of information handling part 404 has the function of the parsing packets of information of guaranteeing and discharging 403 transmission from the packets of information identification part, the request radio band.

Directly link judging part 406 has following function: if receive the information that comprises from the band setting request of band setting packets of information handling part 404 transmission, the table of being preserved according to link information storage part 402 is then judged the connection status of terminal.

Wireless link is set management department 405 and is had according to the judged result that directly links judging part 406, carries out the function of the band setting of wireless link.

At this, illustrate with the terminal 11 of wireless slave unit 2B wired connection and with the terminal 14 of wireless slave unit 3B wired connection between communicate by letter the action when carrying out direct communication between wireless slave unit.

Figure 22 is the sequential chart of the communication process of expression when carrying out direct communication between wireless slave unit.

In Figure 22, dot sequential based on the communication process of IEEE802.11e standard, represent other parts with solid line.

In the present embodiment, be opportunity with the communication process that begins direct communication between wireless slave unit, utilize the communication protocol of frequency band reservation type.

For example, as the communication protocol of frequency band reservation type, can exemplify by the ST2 (internet information stream protocol version 2) of IETF regulation and RSVP (resource reservation protocol) etc.

Band setting request among Figure 22 and band setting response are as the communication process of frequency band reservation type communication protocol.

At first, sending band setting request (9) in terminal 14 to wireless slave unit 3B (uses " O " circle to live 9 expressions in the drawings.Below, the numeral of drawing together with " () " is equivalent among the figure with O circle numeral firmly) before, terminal 14 broadcast transmissions comprise the ARP request packet (1) of the IP address of distributing to known terminal 11, attempt to obtain the MAC Address of terminal 11, wherein, band setting request (9) is to guarantee necessary frequency band from terminal 14 before terminal 11 transmits data.

For example, utilize UPnP (Universal Plug and Play: common pin and playback) AV (phonotape and videotape) to be undertaken under the situation of transfer of data by terminal 11 and terminal 14, when when each terminal network connects, determining this machine address or when between terminal, carrying out the exchange of contents list, broadcast transmission ARP packets of information.

If wired receiving and transmitting part 120 of wireless slave unit 3B receives the ARP request packet (1) that sends from terminal 14, then will be to 403 transmission of packets of information identification part.

If imported the ARP request packet in the packets of information identification part 403, then to 400 transmission of link information analysis unit.

If imported the ARP request packet in the link information analysis unit 400, resolve its content, check and whether added link information.

At this, because additional link information, so directly the ARP request packet is transmitted to link information appendix 401.

If imported the ARP request packet in the link information appendix 401, additional link information.

If added link information by link information appendix 401 to the ARP request packet, then wireless slave unit 3B passes through radio receiving and transmitting part 121 to wireless master 1 wireless transmission ARP request packet (2).

If wireless master 1 wireless receiving is to ARP request packet (2), with its wireless transmission (3).

When radio receiving and transmitting part 121 wireless receivings of wireless slave unit 2B during, send it to packets of information identification part 403 to the ARP request packet (3) that transmits from wireless master 1.

If the ARP request packet has been imported in packets of information identification part 403, then it is sent to link information analysis unit 400.

If link information analysis unit 400 has been imported the ARP request packet, resolve its content, check and whether added link information.

Its result, if distinguish in the ARP request packet and added link information, whether then according to the MAC Address that is included in the wireless master 1 in this link information, discerning is by the additional link information of the wireless slave unit in the same BSS (Basic Service Set).

Being identified as is under the situation of the link information additional by the wireless slave unit in the same BSS, be included in the MAC Address of the wireless slave unit in this link information (at this to 402 transmission of link information storage part, be the MAC Address of wireless slave unit 3B) and issued the MAC Address (, being the MAC Address of terminal 14) of the terminal of ARP packets of information at this.

Store the MAC Address of other wireless slave units and the table that is mapped with the MAC Address of the terminal of this wireless slave unit wired connection at link information storage part 402,, show to upgrade when when link information analysis unit 400 sends new MAC Address.

Link information analysis unit 400 is deleted this link information from the ARP request packet that has added link information, to wired receiving and transmitting part 120 outputs, wired receiving and transmitting part 120 wired transmissions are the ARP request packet (4) of additional link information not.

If terminal 11 receives the ARP request packet from wireless slave unit 2B, then the MAC Address of this machine is write this packets of information, send back to as ARP request packet (5).

If wired receiving and transmitting part 120 of wireless slave unit 2B receives the ARP request packet (5) from terminal 11 wired transmissions, then it is sent to packets of information identification part 403.

If the ARP request packet has been imported in packets of information identification part 403, then transmit to link information analysis unit 400.

If link information analysis unit 400 has been imported the ARP request packet, resolve its content, check and whether added link information.

At this, because not additional link information, so directly the ARP request packet is sent to link information appendix 401.

If link information appendix 401 has been imported the ARP request packet, then additional link information.

If added link information by link information appendix 401 to the ARP request packet, then wireless slave unit 2B is by radio receiving and transmitting part 121 wireless transmission ARP request packet (6) in wireless master 1.

If wireless master 1 wireless receiving is to ARP request packet (6), then to the wireless transmission of wireless slave unit 3B ARP request packet (7).

If radio receiving and transmitting part 121 wireless receivings of wireless slave unit 13B the ARP request packet (7) that transmits from wireless master 1, then it is sent to packets of information identification part 403.

If the ARP request packet has been imported in packets of information identification part 403, then send link information analysis unit 400 to.

If link information analysis unit 400 has been imported the ARP request packet, then resolve its content, check and whether added link information.

Its result, if distinguish in the ARP request packet and added link information, so according to the MAC Address that is included in the wireless master 1 in this link information, whether identification is by the additional link information of the wireless slave unit in the same BSS.

Being identified as is under the situation of the link information additional by the wireless slave unit in the same BSS, transmits the MAC Address (is the MAC Address of terminal 11 at this) that is included in the MAC Address (is the MAC Address of wireless slave unit 2B at this) of the wireless slave unit in this link information and has issued the terminal of ARP packets of information to link information storage part 402.

If send new MAC Address from link information analysis unit 400, link information storage part 402 is shown to upgrade.

Link information analysis unit 400 is deleted this link information from the ARP request packet that has added link information, to wired receiving and transmitting part 120 outputs, the ARP request packet (8) that wired receiving and transmitting part 120 will not add link information carries out wired transmission.

Receive the terminal 14 of ARP request packet, obtained the MAC Address of the terminal 11 that is included in the ARP request packet.

Then, terminal 14 is in order to ensure stable communication quality (QoS: service quality), be that the destination sends the band setting request (9) of having put down in writing the necessary frequency band amount of guaranteeing with the MAC Address of the terminal 11 that obtains before.

In this band setting request, except data transmit the value of required request frequency band, also comprise can recognition data identifier (for example, the port numbers of the MAC Address of terminal or IP address, TCP or UDP).

If wireless slave unit 3B receives the band setting request that is sent from terminal 14 by wired receiving and transmitting part 120, then set and ask to packets of information identification part 403 transmission bands.

If the band setting request has been imported in packets of information identification part 403, then send band setting packets of information handling part 404 to.

If band setting packets of information handling part 404 has been imported the band setting request, then resolve the content of band setting request, set the content of request to direct link judging part 406 transmission bands.

If directly link the content that judging part 406 has been imported the band setting request, then with reference to link information storage part 402, identification terminal 11 links to each other with wireless slave unit 2B then.

Then, because this machine is the Data Receiving side, is judged as and do not carry out HCCA and set so directly link judging part 406.This is because in the IEEE802.11e standard, stipulated to send the AddTs request from the wireless slave unit of data transmitter side.

Then, wireless link is set management department 405 and is made the DLS request that is used for the DLS setting, carries out wireless transmission via wireless master 1 to wireless slave unit 2B destination from radio receiving and transmitting part 121.

If wireless slave unit 2B via wireless master 1 wireless receiving the DLS request because this machine is supported DLS, put down in writing expression and can carry out the DLS response of the information judged of DLS so return to wireless slave unit 3B via wireless master 1.

If wireless slave unit 3B has received the DLS response via wireless master 1, then wireless link is set management department 405 and is checked the judged result that DLS sets.

When this judged result is " but DLS ", then whether can carry out direct communication between wireless slave unit in order to check, utilize between wireless slave unit direct communication to wireless slave unit 2B wireless transmission DSL test request (10).

If wireless slave unit 2B wireless receiving the DLS test request, then send DLS test response (11) back to.

And, result in being included in the DLS response is under the situation of " DLS is impossible ", perhaps do not return in the predefined time under the situation of DLS test response, wireless slave unit 3B utilizes Downlink to carry out HCCA (mix and adjust the visit of function control channel) and sets.

If wireless slave unit 3B wireless receiving to the DLS test response, then utilizes between wireless slave unit direct communication to set request (12) to wireless slave unit 2B transmission band.

If wireless slave unit 2B wireless receiving is to the band setting request, then to the AddTs request of wireless master 1 wireless transmission as wireless management frame.

If wireless master 1 wireless receiving then carries out the judgement of the bandwidth assignment of wireless network 21 to the AddTs request, the AddTs response that comprises this judged result is returned to wireless slave unit 2B.

At this, the judged result of the bandwidth assignment of wireless master 1 is " success ".

If wireless slave unit 2B receives the AddTs response, transmit the band setting request (13) of this judged result that added to terminal 11.

Having received the band setting request if terminal 11 is wired, is the destination with terminal 14 then, sends the band setting response (14) that comprises the band setting information requested back to.

Set response (15,16) by wireless slave unit 2B and wireless slave unit 3B transmission band, terminal 14 is with its reception.

More than Shuo Ming communication process is, under the situation of not knowing as the terminal 14 of Data Receiving side as the MAC Address of the terminal 11 of data transmitter side, is used to make the communication process that direct communication is set up between wireless slave unit.Utilize the opposite situation of Figure 23 simple declaration, promptly under the situation of not knowing as the terminal 11 of data transmitter side, lead in making the communication process that direct communication is set up between wireless slave unit as the MAC Address of the terminal 14 of Data Receiving side.

At first, terminal 11 sends ARP request packet (1), attempts to obtain the MAC Address of terminal 14.

Received the link information of the MAC Address of the MAC Address of the additional MAC Address that comprises wireless master 1 of the wireless slave unit 2B of ARP request packet, this machine and terminal 11, had the ARP request packet (2) of link information to be wirelessly sent to wireless master 1 adding.

If wireless master 1 wireless receiving ARP request packet (2), then it is sent to wireless slave unit 3B.

If wireless slave unit 3B from wireless master 1 wireless receiving ARP request packet (3), be mapped being included in the MAC Address of the terminal 11 in the wherein additional additional information and the MAC Address of wireless slave unit 2B, be stored in link information storage part 402.Then, deleted the ARP request packet (4) of additional information to terminal 14 wired transmissions.

If terminal 14 has received ARP request packet (4), then write the MAC Address of this machine, be that the destination is sent ARP request packet (5) back to terminal 11.

Received the wireless slave unit 3B of ARP request packet (5), the link information of the MAC Address of the additional MAC Address that comprises wireless master 1, this machine and the MAC Address of terminal 14 is wirelessly sent to wireless master 1 to the ARP request packet (6) that has added link information.

If wireless master 1 wireless receiving ARP request packet (6), then it is sent to wireless slave unit 2B.

If wireless slave unit 2B from wireless master 1 wireless receiving ARP request packet (7), be mapped being included in the MAC Address of the terminal 14 in the wherein additional additional information and the MAC Address of wireless slave unit 2B, store link information storage part 402 into.Then, deleted the ARP request packet (8) of additional information to terminal 11 wired transmissions.

Receive the terminal 11 of ARP request packet, obtained the MAC Address of the terminal 14 that is included in the ARP request packet.

Then, terminal 11 is in order to ensure stable communication quality (QoS: service quality), be the destination with the MAC Address of the terminal 14 that obtains before, send the band setting request (9) of having put down in writing the necessary frequency band amount of guaranteeing.

If wireless slave unit 2B receives the band setting request that sends from terminal 11, make the DLS request that is used for the DLS setting, be wirelessly sent to wireless slave unit 2B via wireless master 1.

If wireless slave unit 3B via wireless master 1 wireless receiving the DLS request because this machine is supported DLS, so, return to wireless slave unit B2 via wireless master 1 and to have put down in writing the DLS response that expression is judged to be the possible information of DLS.

If wireless slave unit B2 has received the DLS response via wireless master 1, then check the judged result that DLS sets.

Be under the situation of " DLS may " in this judged result, then whether can carry out direct communication between wireless slave unit, utilize between wireless slave unit direct communication to wireless slave unit 3B wireless transmission DLS test request (10) in order to check.

If wireless slave unit 3B wireless receiving the DLS test request, then return DSL test response (11).

If wireless slave unit 2B wireless receiving the DLS test response, then to wireless master 1 wireless transmission as the AddTs of wireless management frame request.

If wireless master 1 wireless receiving the AddTs request, then carry out the judgement of the bandwidth assignment of wireless network 21, return the AddTs response that comprises this judged result to wireless slave unit 2B.

At this, the judged result of the bandwidth assignment in the wireless master 1 is " success ".

If wireless slave unit 2B receives AddTs response, utilize then that direct communication has added the band setting request (12) of this judged result between wireless slave unit to wireless slave unit 3B wireless transmission.

If wireless slave unit 3B wireless receiving the band setting request, then it is sent in the terminal 14.

Having received band setting request (13) if terminal 14 is wired, is that the band setting response (14) that comprises the band setting information requested is returned in the destination with terminal 11 then.

Set response (15,16) by wireless slave unit 2B and wireless slave unit 3B transmission band, terminal 11 receives it.

Above Shuo Ming wireless slave unit 2B, 3B based on the IEEE802.11e standard, before frequency acceptance band is set request, can judge which wireless slave unit the distant terminal with other wireless slave unit wired connections is connected on by reference link information storage part 402, so, in the moment that has received the band setting request from terminal, can whether carry out could judging of DLS setting with this machine wired connection.

And, utilize known agreement (ARP) to the MAC Address of other wireless slave unit notices with the terminal of this machine wired connection, so, unnecessary Radio Resource do not wasted.

Moreover, needn't change relatively more expensive wireless master 1, only import less expensive wireless slave unit 2B, 3B and just can cut down useless radio communication, so the user imports these wireless slave units 2B, 3B easily.

＜replenish

In addition, the present invention is not limited to each execution mode certainly, also comprises following content.

(1) in the respective embodiments described above, can be made as 4 with the terminal of wireless slave unit wired connection, but be not limited thereto, both can be 1, also can be 5.

(2) as the update method of recorded content of the 1st table storage part 125, also can use, to each MAC Address that is recorded in the 1st table storage part 125, this destination terminal that waits from RARP (RARP) sends wired frame of request response, carries out method for updating according to having or not of responding.

(3) in the 4th execution mode, utilize ARP by the additional link information of link information appendix, and made the link information admin table, but also can adopt following formation, i.e. additional link information in packets of information that the wireless relay device sends and relayed information bag, and make the link information admin table.

(4) in the 4th execution mode, communication process with direct communication between the beginning wireless slave unit is an opportunity, used band setting request and band setting response, but the setting of direct communication is not limited to this situation between wireless slave unit of the present invention as the communication process of frequency band reservation type communication protocol.

(5) the link information analysis unit 400 in the explanation of the 4th execution mode is, parsing is attached to the having or not of link information of other wireless slave units of ARP packets of information, carry out next one action according to its result, but also can be, judgement has received the ARP packets of information by which of wired receiving and transmitting part 120 or radio receiving and transmitting part 121, and the action below carrying out.For example, received by wired receiving and transmitting part 120 under the situation of ARP packets of information, link information analysis unit 400 transmits the ARP packets of information to link information appendix 401.On the contrary, under situation about being received by radio receiving and transmitting part 121, link information analysis unit 400 transmits the link information that is attached to the ARP packets of information to link information storage part 402, and the ARP packets of information of having deleted additional link information is sent to wired receiving and transmitting part 120.

(6) notification frame, claim frame and link information are not limited to the data structure shown in Fig. 8,16,17,21.

(7) also can be the MAC Address of wireless master 1 as BSSID (BSSID).

(8) formation of the respective embodiments described above can be that LSI (large scale integrated circuit) realizes with integrated circuit typically also.These formations both can be to realize single chip respectively, and whole formations or a part are constituted by single-chipization.Integrated circuit also can be described as IC, system LSI, super LSI, special LSI etc. according to the integrated level difference.And the method for integrated circuit is not limited in LSI, also can realize with special circuit or general processor.Moreover, also can utilize FPGA (field programmable gate array), perhaps can carry out the processor that is reconfigurable into of the connection of circuit unit of LSI inside and setting again.

Moreover because the progress of semiconductor technology, perhaps other technology of Pai Shenging if can replace the new integrated circuit technology of existing semiconductor technology, so, certainly, also can utilize this new technology to carry out the integrated of functional block.For example, can be the application etc. of biotechnology.

The present invention can be applicable in the zone of the wireless network of wireless master management, with other wireless slave units with the terminal wired connection carry out wireless communication, with carrying out the wireless slave unit of wired network communication with the terminal of this machine wired connection.

Claims (3)

1, a kind of wireless slave unit, in the district of the wireless network that wireless master is managed,, carry out wireless communication with other wireless slave units with the other-end wired connection with carrying out wired network communication with the terminal of this machine wired connection, it is characterized in that having:

Wireless receiving portion, wireless receiving has added the notification frame of additional information, the MAC Address that this additional information comprises the MAC Address of the MAC Address of above-mentioned other-end, above-mentioned other wireless slave units and manages the wireless master of above-mentioned other wireless slave units by above-mentioned other wireless slave units;

Storage part, storage package are contained in MAC Address, the MAC Address of above-mentioned other wireless slave units and the MAC Address of managing the wireless master of above-mentioned other wireless slave units of the above-mentioned other-end in the above-mentioned notification frame of wireless receiving;

Wired acceptance division, wired reception from send with the terminal of this machine wired connection, comprise the frame that sends target MAC (Media Access Control) address; And

Filter house when the transmission target MAC (Media Access Control) address and the MAC Address that is stored in above-mentioned storage part of the above-mentioned frame of wired reception are inconsistent, abandons this frame;

The configuration part, consistent with the MAC Address that is stored in above-mentioned storage part and manage above-mentioned other the MAC Address of MAC Address and the wireless master of this machine of management of wireless master of wireless slave unit when consistent at the transmission target MAC (Media Access Control) address of the above-mentioned frame of wired reception, based on the MAC Address of above-mentioned other wireless slave units, be used between above-mentioned other wireless slave units and this machine, directly not carrying out the setting of radio communication by above-mentioned wireless master.

2, wireless slave unit as claimed in claim 1 is characterized in that,

Above-mentioned notification frame is the ARP packets of information.

3, wireless slave unit as claimed in claim 2 is characterized in that,

The wired reception of above-mentioned wired acceptance division from send with the terminal of this machine wired connection and be the ARP packets of information of destination with other-end with above-mentioned other wireless slave unit wired connections,

Above-mentioned wireless slave unit also has:

Extra cell contains the additional information of MAC Address of the wireless master of the MAC Address of MAC Address, this machine of the terminal of above-mentioned and this machine wired connection and this machine of management to above-mentioned ARP packets of information additional packets; And

Wireless transmission unit, wireless transmission have added the ARP packets of information of said additional information.

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