TWI311421B - Access point and method for establishing wireless distributed system links thereof - Google Patents

Description

\V- rcf 'η η 1311421 IX. Description of the Invention: [Technical Field] The present invention relates to the field of wireless communications, and more particularly to a base station and a method for establishing a connection system for a wireless distribution system. [Prior Art] Wireless Distribution System (Wirdess) in the 802.11 Wireless Network of the Institute of Electrical and Electronics Engineers (IEEE)

The Distributed System (WDS) connection is used for data transmission between the Base Point (AP) and the base station. The establishment of a general WDS connection requires setting the Service Set Identifier (SSID) or the basic service set identifier (Basic Service) of another base station corresponding to the WDS by using the user interface (UI) provided by the base station. Set Identifiw, BSSID) 'Therefore, the user needs to have a technical background to properly set up the network. However, for the average user, when setting up a WDS connection, it is too cumbersome to log in to the interface, and some users do not know how to set it. SUMMARY OF THE INVENTION In view of the above, it is desirable to provide a base station that does not need to set a Service Set Identifier (SSID) or a basic service set identifier Service Set Identifier ' BSSID ) to simply establish a wireless distribution system Wkdess

Distributed System, WDS). Another product to know: for a method of establishing a WDS connection, it does not need to set ss still BSSID and simply establish a WDS connection. A base station that can establish a wireless distribution system connection with a plurality of base stations, including an input module and a main module. The input module is used to receive a user input and initiate a wireless distribution system connection. The main module is used for detecting the user input message of the input module household ^^, determining the working mode of the base station according to the user input message, according to the working mode of the base station, transmitting and receiving - establishing a wireless distribution system connection. "-A method for establishing a wireless distribution secret connection, and checking the number of base stations of the wireless distribution system connection", which includes the following steps: providing a loss for each _ base station 5 ___III, ^ 1311421 丨 oblique work replacement page 'call ~ , -. - _ into the module; a first base station input module receives a first user input message, so that the first base station enters an active mode, and transmits a broadcast frame; a second base station The input module receives a second user input message, causes the second base station to enter a slave mode, and scans the broadcast frame; the second base station transmits a request frame to the first base station; and the first base station Send a confirmation frame to the second base station. The above method of establishing a WDS connection does not need to set the SSID or BSSID, and can use the input module to simply establish a WDS connection between the base stations. DETAILED DESCRIPTION OF THE INVENTION The above and other advantages of the invention will be readily understood by reference to the accompanying drawings. <Embodiment> ® Referring to the first figure, the wireless distribution system (Wireless distribution system) of the present invention is established.

Implementation environment diagram for the method of the Distributed System 'WDS) connection. In the present embodiment, a wireless communication system includes a plurality of access points (APs) 100, 200, 300 and a plurality of mobile stations (Mobile Stations) 190, 290, and 390. The plurality of mobile stations 190, 290, and 390 can be any device that can access the wireless local area network, such as: a mobile phone package, a portable computer, a personal digital assistant (PDA), and the like. The mobile stations i9〇, 290, and 390 perform wireless communication with the base stations loo, 200, and 300, respectively. In the actual wireless communication system, there are a plurality of base stations 100, 200, 300 and a plurality of mobile stations 190, 290, 390. For the sake of simplicity, only the base stations 1 , 200, 300 are shown in the first figure. And mobile stations 19, 290, 390. The base station 100 and the base station 200 can establish a WDS connection for wireless communication, so that the mobile station 190 and the mobile station 290 can also wirelessly communicate with the base station 200 through the base station 1 to expand the wireless network. The coverage, that is, the coverage of the wireless network extends from the coverage of the base station 1 or the base station 2〇〇 to the coverage of the base station 1 and the base station 200. The base station 100 and the base station 300 can also establish a WDS connection. When the base station 1〇〇 - successfully establishes the WDS connection with the base station 3 (8), the coverage of the wireless network further extends to the coverage of the base station 100, the base station 200, and the base station 3. v Referring to the second figure, the data frame for establishing a WDS connection in the embodiment of the present invention is 6 1311421 m, about | i \

U , —. · _, · --«I, I 1000 schematic. In this embodiment, the data frame 1 is a predefined data frame between the base stations 1 , 200, and 300 for establishing a WDS connection. The data frame 1000 includes a Media Access Control (MAC) header 1100 and a frame body (Frame B〇dy). The frame main body i2 includes a MAC Service Data Unit (MSDU) 1210. In this embodiment, the data frame 1000 can be a broadcast frame (Br〇adcast Frame), a query frame (Query Frame), a request frame (for the frame), and a correct 3 tolerance frame ( Acknowledgement Frame). Among them, the broadcast frame contains two wide, MSDU. In this embodiment, the broadcast MSDU includes a Basic Service Set Identifier (BSSID), a channel number (channel#), and a current WDS connection number. The BSSID is the MAC address of the base station transmitting the broadcast frame. The channel number is the channel number of the base station transmitting the broadcast frame. When the number of uranium WDS connections is the base station of the broadcast frame, the established wds company The number of lines. In other embodiments, the broadcast MSDU can include more information as needed. The interrogation frame includes an inquiry to the MSDU, and the inquiry to the MSDU includes an inquiry to establish a WDS connection message. The request frame includes a request MSDU. In this embodiment, the request = SDU includes a BSSID and a number of WDS connections. The BSSID is the MAC address of the base station transmitting the request frame. The number of WDS lines is the number of WDS connections established by the base station transmitting the request frame. In other embodiments, the requesting MSDU can include more messages as needed. The confirmation frame includes a confirmation MSDU ’ including confirmation to establish a WDS connection message. Referring to the second figure, a block diagram of an embodiment of a base station of the present invention. In the present embodiment, the base station 100 includes a main module 110, an input module 13A, and a display module 15G. The input module 130 is configured to receive a user input message and initiate a WDS connection. The display module 150 is used to display the WDS connection status. In this embodiment, the input module 130 is a button, and the display module 15 is a Light Emitting Diode (LED). In other embodiments, the input module 13〇

I I 1311421 Cut. Replace the 肓 display device, the base station can be other input devices, and the display module 150 can be other 100 or not including the display module 15 〇. The main module 110 is configured to detect the user input message received by the input module 130, determine the working mode of the base station according to the user input message, and establish a frame for the WDS connection according to the work. In this embodiment, the frame for establishing a WDS connection includes a broadcast frame, a request frame, and a confirmation frame. In other embodiments, the frame for establishing a WDS connection may further include an inquiry frame. The main mode and group 11 are also used to control the display state of the display module 150 according to the operation mode. In the present embodiment, the main module 11A includes a detection module 112, a control module 114, and a transceiver module 116. The detecting module 112 is configured to detect the input module (10) = the received user input message, and transmit the detection result to the control module U4. In the present embodiment, the user input message is in the pressed state of the input module 13G, and the detecting module 112 is used to detect the pressed state of the wheeling module 130. The control module ιΐ4 is configured to determine the operation mode of the base station 1 (8) according to the detection result of the detection module 112, and control the display state of the display module 15 根据 according to the operation mode. In this embodiment, if the detecting module 112 detects that the input module 13 is continuously pressed for more than a predetermined pressing time, the control module 114 determines that the base station enters the active mode (5), and causes the display module 150 to Turn on 'to indicate that the base station 1 is in active mode. In the present embodiment, the predetermined pressing time is 3 seconds. If the detection module 114 detects that the input module 130 is continuously pressed for less than the predetermined pressing time, the control module 114 determines that the base station 100 enters the slave mode (slave M〇de) and causes the display module lf〇 to blink (Blinking) ) to indicate that the base station 100 is in the slave mode. In this embodiment, the blinking frequency of the display module 150 is flashed i times per second. In other implementation manners, the blinking frequency of the display module 150 may also be other blinking frequencies. The transceiver module 116 is configured to send and receive frames for establishing a WDS connection. The control module 114 is further configured to control the transceiver module 116 to send and receive frames for establishing a WDS connection according to the working mode of the base station. In the present embodiment, if the base station (8) enters the active mode, the power receiving module 116 is configured to transmit a broadcast frame and a confirmation frame; if the base 1312121 is torn in the county implementation manner, and according to the connection The type 'that receives the broadcast frame' is based on the received broadcast frame selection - the best active base station. In other embodiments, the transceiver module m, that is, the transceiver module 116 transmits one, and the door-to-door transmission is used to actively display the frame mode, and then the control base station receives the inquiry message C and then sends back the broadcast. Gambling to the base station's message frame, and selecting the most appropriate base according to the received broadcast frame = receiving the broadcast to actively select the test wire, the __ turtle gives the best = move ^ platform. In the present embodiment, 'if the best silk base station accepts the request, then = confirmation surface; if the material is not received, the material is woven, the county is still side Wei; if the U6 does not receive the confirmation frame, the wdS is established. The connection failed. After the base station 100 successfully establishes the WDS connection, if the magic platform (8) is in the active core mode, the control module m causes the display module (10) to be extinguished; if the base station (8) is in the slave mode, then the control module m enables The display module 150 flashes after flashing (QuickFlashing). In the present implementation, the display module 15G has a fast _ rate of 6 flashes per second. In other embodiments, the flash frequency of display module 150 may be other flash frequencies. When the base station 100 fails to establish the WDS connection and is in the slave mode, the control module 114 determines whether the base station 1 is in the slave mode for more than a predetermined time. In the present embodiment, the predetermined time is three minutes. If it is less than three minutes, the transceiver module 116 continues to scan the broadcast frame; if it is more than three minutes, the base station 1 is turned off. In the present embodiment, the base stations 200 and 300 that need to establish a WDS connection with the base station 100 have the functional modules shown in the third figure.

Referring to the fourth figure, a flow chart of an embodiment of a method for establishing a WDS connection according to the present invention is shown. In the present embodiment, the base station 1 and the base station 2 (five) require an .iWDS connection. 1311421 In step S400, the input module 13 of the base station loo receives a first user input message, causes the base station 1 to enter the active mode, and transmits a broadcast frame. In step S402, the input module of the base station 200 receives a second user input message, causes the base station 200 to enter the slave mode, and scans the forest implementation towel delivered by the base station ι〇〇, on the grain WDSit_ The difference between the active mode and the passive mode of the base station is that, in other periods, the status of each base station in the wireless network is equal. In step S404, the base station 2 transmits a request frame to the base station 100 to request a WDS connection. In step S4, the base station 1 transmits a confirmation frame to the base station 200, and the WDS connection is successfully established. In other embodiments, in the process of establishing a WDS connection, the roles of the base station 1 and the base station 200 can be interchanged, that is, the base station 1 enters the slave mode, and the base station 200 enters the active mode. Referring to the fifth figure, a flow chart of another embodiment of the method for establishing a WDS connection of the present invention is shown. In the present embodiment, the base station i (8) and the base station 2 need to establish a WDS connection. In step S500, the input module 13 of the base station 1 receives a first user input message, causes the base station 100 to enter the active mode, and turns on the display module 15A. In the actual % mode, the user input message is that the input module 13 of the base station is continuously pressed for more than the predetermined pressing time. In step S5〇2, the base station 1 transmits a broadcast frame. In this embodiment, the broadcast frame belongs to the data frame 1000' as shown in the second figure. The MSDU 1210 includes a broadcast MSDU, and the broadcast MSDU includes a BSSID, a channel number, and a current number of WDS connections. Among them, BSSn) is the channel number of the base station 100 of the base station 100, and the current number of WDS connections is the number of WDS connections established by the base station 100. In step S504, the input module of the base station 200 receives a second user input message 'to cause the base station 200 to enter the slave mode, and blinks the display module of the base station 2'. In the present embodiment, the second user input message is that the input module of the base station 2 is continuously pressed for no more than a predetermined pressing time. 1311421 And the service? ::/^ 'Replace the Ιι; in step S506, the base station 200 scans the broadcast frame transmitted by the base station 100. In the present embodiment, the base station 200 adopts a passive scanning mode, that is, receives a broadcast message frame, and selects a base station 1 according to the received broadcast frame. In other embodiments, the base station 200 can also adopt an active scanning mode, that is, the base station 200 transmits an inquiry frame, and when the base station 1 receives the inquiry frame, the broadcast frame is sent back to the base station. 200 ' and thus the base station 200 receives the broadcast frame and selects the base station 1 according to the received broadcast frame. In step S508, the base station 200 transmits a request frame to the base station 1 to request to establish a WDS connection. In this embodiment, the request frame belongs to the data frame 10 of the _ as shown in the second figure, and the MSDU 1210 includes the request MSDU, and the request MSDU includes the BSSID and the number of WDS connections. Among them, the BSSID is the MM address of the base station 2, and the number of WDS connections is the number of established WDS connections of the base station. In the present embodiment, if the base station 1 receives the request from the base station 2, the confirmation frame is transmitted to the base station 200; if the request is not accepted, the confirmation frame is not transmitted. Therefore, in step S510, the base station 200 determines whether or not the confirmation frame transmitted by the base station 1 is received. If the base station 200 receives the confirmation frame, the connection is successfully established. In step S512, the base station 1 〇〇 extinguishes its display module 15 〇, and the base station 2 〇〇 shows the module and then goes out. If the base station 200 does not receive the confirmation frame, the establishment of the WDS connection fails. In step S514, the base station 200 determines whether it is in the slave mode for more than a predetermined time. If the predetermined time has not elapsed, the process returns to step S506, and the base station 2 continues to scan the frame. , Yin', refer to the sixth figure, which is another embodiment of the method for establishing a WDS connection according to the present invention. In the present embodiment, the base station 1 and the base station 4 can also establish a WDS connection by the method of the present invention. After the base station 1〇〇 and the base station 4 (9) successfully establish the WDS connection, the coverage of the wireless network is further extended to the coverage of the base station 100, the base station 200, the base station 3, and the base station 4〇〇. In this real 11 131.1421 P flat 'h correction

In the implementation method, only in the process of establishing the WDS connection, the other way, the location of each place in the wireless network = equal in the embodiment of the present invention, using a simple button to build $ The connection between the WDS and the LED can be heard by the LEDs, and the expansion of the current connection status. In summary, the invention conforms to the patent requirements of the invention and is patented according to law. Application. On the second floor, only the preferred embodiment of this (4) is familiar with the skill of this case.

= Equivalent modifications or changes made by the spirit of Tearing shall be included in the scope of the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS Figure f is an implementation environment diagram of a method for establishing a Wirdess Distributed System (WDS) connection of the present invention. The figure is a schematic diagram of establishing a data frame of a WDS connection in the embodiment of the present invention. The second drawing is a block diagram of an embodiment of the base station of the present invention. The fourth figure is a flow chart of the implementation of the WDS connection method. The fifth figure is a flow of another embodiment of the method for establishing a WDS connection according to the present invention.

Figure 6 is an environmental diagram of an implementation of another embodiment of the method of establishing a WDS connection of the present invention. ' [Main component symbol description] Base station Main module Detection module Control module Transceiver module Input module Display module Mobile station 100, 200, 300, 400 110 112 114 116 130 150 190, 290, 390 12

131.1421 | Call? It is said that the replacement page I is poor frame 1000 MAC header 1100 frame body 1200 MSDU 1210 13

Claims (1)

1311421 X. Patent application scope: ————一^ A base station' which can establish a wireless distribution system connection with a plurality of base stations, including: - an input module 'for receiving a user input message and starting wireless distribution The system is connected to the system; and a main module is configured to detect the user input message to determine the working mode of the base station according to the user input message, and send and receive a frame for establishing a wireless distribution system connection according to the working mode. 2. The base station as described in the scope of claim 2, wherein the input module comprises ugly. 3. The base station as described in claim 1 further includes a display module for displaying the wireless distribution system connection status. 4. The base station of claim 3, wherein the display module is a diode. ^ 5. The base station of claim 1, wherein the main module includes a detection module </ RTI> for detecting the user input message. 6. The base station of claim 5, wherein the main module further comprises a transceiver module for transmitting and receiving the frame for establishing a connection of the wireless distribution system. 7. The base station of claim 6, wherein the main module further comprises a control module, configured to determine a mode of the base station according to a detection result of the detection module, and control the The transceiver module sends and receives the frame for establishing a distribution system connection. 8. If you apply for the base station mentioned in item 1 of the patent scope, the establishment of the connection includes the - bribe, - request section and - the frame of the frame, the first 9. If you apply for the scope of the eighth item The base station, wherein the frame for establishing a wireless distribution system connection further includes an inquiry frame. 10. A method for establishing a wireless distribution system connection for establishing a wireless distribution system connection between a plurality of base stations, comprising the steps of: providing an input module for each base station; and inputting a first base station The group receives a first-user input message, causes the first base station to enter an active mode, and transmits a broadcast frame; 14 1311421 Φ: Μ, a second base station input module receives a second user input message, Passing the second base station into a slave mode and scanning the broadcast frame; the second base station transmitting a request frame to the first base station; and the first base station transmitting a confirmation frame to the first base station Two base stations. 11. The method of establishing a wireless distribution system connection according to claim 10, wherein the first user input message is that the input module of the first base station is pressed for more than a predetermined pressing time. 12. The method for establishing a wireless distribution system connection as described in item 1 of the patent scope includes the following steps: Providing a display module for the first base station; and opening the display module. 13. The method of the wireless distribution of the granularity described in claim 12, further comprising the following steps: The brother of a base $ annihilates the display module. I4. The method for establishing a scale distribution secret line as described in claim 2, wherein the display module is a light emitting diode. If the description of the silk thread is divided into four (4), the party of the connection line receives the second user input message with the input module of the first base station, and the 地 地 platform enters the slave mode and scans the broadcast frame. Step i includes the following steps: the second base station transmission-inquiry frame transmits the broadcast frame to the second base station to the first base station: 16. The method as recited in claim 1 , wherein the second user turns into a vertical distribution system, and the square pressure does not exceed - the surface is pressed. ..., ~ ~ The input module of the platform is pressed 17. If the patent application scope is the first item, the following steps are included: the establishment of the wireless distribution system connection provides a display module for the younger base station. ; and 15 I31J421 column cow i month tf day correction replacement page flashes the display module. 18. If the patent application scope is the ο method, the following steps are included: the construction is completed, and the line distribution system is connected. The second base station flashes the display module and then annihilates. 19. The method of claim 17, wherein the display module is a light emitting diode. ...the line of the line distribution system 20. If the patent application scope is the first method, the input module is - the button construction line of the wire cutter system. 21. As described in the scope of claim 1 The benefit method, wherein the broadcast frame includes the number of current wireless distribution system connections of the party that is connected to the basic service distribution system. Μ 集 - - - - - - - - - - 22. 22. 22. 22. 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 建立 1 1 1 1 The number of green. 16 1311421 I, hand? , Φ々日修正 replacement page VII. Designated representative map: (1) The representative representative figure of this case is: (4). (2) A brief description of the symbol of the representative figure: None 8. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention: