1281323 九、發明說明： 【發明所屬之技術領域】 本發明涉及無線區域網路，尤其涉及一種無線區域網路裝置 及其訊框順序號碼編號方法。 【先前技術】</ RTI> </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; [Prior Art]
電氣與電子工程師協會（IEEE)的標準-802.11定義了 MAC 訊框格式之主體架構，其包括資料訊框、覺淫框丛及控制訊框 三種。參閱第一圖及第二圖，分別為MAC資料訊框1〇〇及MAc 管理訊框200。資料訊框1〇〇及管理訊框2Q0中各包含一順序控制 欄位160、260。該順序控制攔位160、26〇分別包含兩個次欄位： 片段號碼（SegmentNumber)攔位161、261以及順序號碼（Sequence Number，以下簡稱為SN)攔位162、262。其中，順序號碼係訊 框攜▼之MAC服務資料單元（MAC Service Data Unit，以下簡稱 為MSDU)或MAC管理協定資料單元（MAC Management pr〇t〇c〇1 DataUmt，以下簡稱為MMPDU)之順序號碼。每一個MSDU或 MMPDU都有一個順序號碼，其值從〇開始到4Q95。 在傳統方法中，傳送裝置對其傳送之資料單元不論MSDU或 MMPDU’其順序號碼都只是一直累加，累加到4〇95再從頭開始， H塵接收裝置無法藉由MMPDU之順序去判斷此MMPDU是否 、务皇造的二因此，當造假用戶假裝基地臺（Access p〇mt，Ap)傳 达造假之官理訊框給接收裝麟，就會形成拒絕服務⑺娜紅 s_ce 1下簡稱為DqS)攻擊及雙面人（Man*the_middie)攻 擊’攻擊者傳送上述造假訊框企圖造成接钱置無法連線及無法 使用網路。所謂雙面人攻擊係指在Α_ϋΒ通訊的同時，有第三方 ^處於訊道的中間，可以完全聽到Α和Β通訊之訊息，並可 替換以及添加訊息。 【發明内容】 本發明之目的在於提供—種無線區域網路裝置，可將不同接 5 1281323 收工作站位址（Receiver Address，以下簡稱為RA)之MAC服務 資料單元（MAC Protocol Service Data Unit，以下簡稱為 MSDU ) —及 MAC 管理協定資料單元（MAC Management Protocol Data Unit ’以下間稱為]VIMPDU)分開j扁順序號碼（SequenceNumber， ，以下簡稱為SN)，並將其麁用於所形成之MAC協定資料單元 (MACProtocolDataUnit，以下簡稱為MPDU)之順序號碼欄位， 以避免拒絕服務（Denial of Service，以下簡稱為DoS)及雙面人 攻擊。 本發明之另一目的在於提供一種訊框」噴序號碼編號方法，其 1將不同接收工作站位址之MSDU及MMPDU分開編順序號碼， •並將其應用於所形成之MPDU之順序號碼欄位，以避免拒絕服務 及雙面人攻擊。 為達成上述目的，本發明無線區域網路裝置包括：一高層協 定色:二MAC!麵拠二實—渔定模 用於執行應用層、表現層、會談層、傳送層、網路層及邏輯連接 控制層所組成之協定層之功能，把所傳送資料轉換為MSDU，並 把MSDU及其接收工作站位址傳送給MAC層協定模組。MAC 層協定模组用於接收MSDU及其接收工作站位址，並根據管理需 求產生MMPDU及其接收工作站位址，還用於對所接收之MSDU # 及所產生之mmpdu加上訊框控制等相關資訊攔位形成MPDU。 MAC層協定模組包括··一順序號碼編號模組，用於將不同接收工 作站位址之MSDU及MMPDU分開編順序號碼；以及一 MAC處 理模組，用於根據管理需求產及其接收工作站位址， 給MSDU及MMPDU加上相關資訊襴位而形成MPDU，以及把順 序號碼編號模組所編之順序號碼應用於所形成之之順序號 碼欄位。實體層協定模組用於給MAC層協定模組所形成之MpDf 加上相關資訊攔位而形成一實體層協定資料單元（PHY ProtocolThe Institute of Electrical and Electronics Engineers (IEEE) standard - 802.11 defines the main structure of the MAC frame format, which includes data frames, awareness frames and control frames. Referring to the first and second figures, respectively, the MAC data frame 1 and the MAc management frame 200. The data frame 1 and the management frame 2Q0 each include a sequence control field 160, 260. The sequence control blocks 160, 26 〇 respectively contain two sub-fields: a segment number (SegmentNumber) block 161, 261 and a sequence number (Sequence Number, hereinafter referred to as SN) block 162, 262. The sequence of the MAC Service Data Unit (MSDU) or the MAC Management Protocol (MAC Management pr〇t〇c〇1 DataUmt, hereinafter referred to as MMPDU) number. Each MSDU or MMPDU has a sequence number whose value starts from 〇 to 4Q95. In the conventional method, the data unit transmitted by the transmitting device for its data unit regardless of the MSDU or MMPDU's sequence number is only accumulated, and is added to the frequency of 4〇95 and then starts from the beginning. The H dust receiving device cannot judge whether the MMPDU is determined by the order of the MMPDU. Therefore, when the fake user pretends that the base station (Access p〇mt, Ap) conveys the fake official information frame to receive the Lin Lin, it will form a denial of service (7) Na Hong s_ce 1 is referred to as DqS) Attack and Man*the_middie attack The attacker transmitted the above-mentioned fake frame in an attempt to make the connection unreachable and unable to use the network. The so-called double-sided human attack means that at the same time as the Α_ϋΒ communication, a third party is in the middle of the channel, and can completely hear the message of the communication between the Α and Β, and can replace and add the message. SUMMARY OF THE INVENTION The object of the present invention is to provide a wireless local area network device, which can be connected to a MAC service data unit (MAC Protocol Service Data Unit) of a station address (Receiver Address, hereinafter referred to as RA). Referred to as MSDU) - and the MAC Management Protocol Data Unit (hereinafter referred to as "VIMPDU") separates the sequence number (SequenceNumber, hereinafter referred to as SN) and applies it to the formed MAC. The sequence number field of the protocol data unit (MACProtocol Data Unit, hereinafter referred to as MPDU) to avoid denial of service (DoS) and double-sided attack. Another object of the present invention is to provide a method for numbering a serial number of a frame, which 1 separates MSDUs and MMPDUs of different receiving workstation addresses into sequential numbers, and applies them to the sequence number field of the formed MPDUs. To avoid denial of service and double-sided attacks. In order to achieve the above object, the wireless local area network device of the present invention comprises: a high-level agreement color: two MAC! 拠 拠 实 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - The function of the protocol layer formed by the connection control layer converts the transmitted data into an MSDU and transmits the MSDU and its receiving workstation address to the MAC layer protocol module. The MAC layer protocol module is configured to receive the MSDU and its receiving workstation address, and generate the MMPDU and its receiving workstation address according to the management requirement, and also used to add the received MSDU # and the generated mmpdu to the frame control. The information block forms an MPDU. The MAC layer protocol module includes a sequence number number module for separately sorting MSDUs and MMPDUs of different receiving workstation addresses, and a MAC processing module for generating and receiving workstation bits according to management requirements. The address is added to the MSDU and the MMPDU to form an MPDU, and the sequence number edited by the sequence number number module is applied to the formed sequence number field. The physical layer protocol module is configured to add a related information to the MpDf formed by the MAC layer protocol module to form a physical layer protocol data unit (PHY Protocol).
Data Unit，以下簡稱為ρρ〇υ )。 為達成上述另一目的，本發明實施方式提供之訊框順序號碼 6 1281323 •編號方法包括以下步驟：接收資料單元及其接收工作站位址；以 及將不同，收工作站位址之資料單元分開編順序號碼。 ' 傳达裝置將不同接收工作站位址之MSDU及MMPDU分開編 順序號碼，並將其應用於所形成2MpDU2順序號碼欄位，其對 •應接收裝置可以使用-定順序檢查所接收之資料訊框《管理訊框 之順序號碼攔位，過濾造假資料訊框或管理訊框，從而可避免雙 面人攻擊及拒絕服務攻擊。 藉由以下對具體實施方式詳細的描述結合附圖，將可輕易的 瞭解上述内容及此項發明之諸多優點。 【實施方式】 ” 、 • 開放式系統互聯參考模型（Open System InterconnectData Unit, hereinafter referred to as ρρ〇υ). In order to achieve the above other object, the frame sequence number 6 1281323 provided by the embodiment of the present invention includes the following steps: receiving the data unit and its receiving workstation address; and separately ordering the data units of different receiving and receiving workstation addresses. number. The communication device separates the MSDU and MMPDUs of different receiving workstation addresses into sequential numbers and applies them to the formed 2MpDU2 sequence number field, which can be used by the receiving device to check the received data frame in a sequential order. "Manage the sequence number of the frame, filter the fake data frame or management frame, so as to avoid double-sided attacks and denial of service attacks. The above and many of the advantages of the invention will be readily apparent from the Detailed Description of the Detailed Description. [Embodiment] ”, • Open System Interconnect Reference Model (Open System Interconnect)
Reference Model，以下簡稱為qSI模型）將網路通訊協定體系區 分為7個層。體系之最底層為實體層（physical Layer，以下簡稱 為PHY)，其定義媒體、傳輸方法及佈線方式。體系之第二層為資 料連結層（Data Link Layer)，其定義如何確保資料正確傳輸，給 資料加上相關資訊欄位而形成訊框。資料連結層包括兩個子層， 分別為·邏輯連結控制（LogicalLinkControl，以下簡稱為LLC) 層’負責將資料正確的發送到實體層，以及媒體存取控制（Media Access Control，以下簡稱為MAC)層，負責控制與連結實體層之 籲實體媒體。體系之第三層為網路層（NetworkLayer)，其負責資料 繞徑（Routing)，包括轉換地址，尋找最佳路徑及管理流量。'體系 之第四層為傳送層（Transport Layer)，其確保資料到達順序及正 確性。體系之苐五層為會談層（Session Layer)，其定義連結對話， 錯誤處理與邏輯地址名稱轉換。體系之第六層為表現層 (Presentation Layer)，其處理資料格式，包括格式轉換、加密^ 解密、壓縮與還原。體系之第七層為應用層（Applicatl〇n]Layer)^ 其疋義供應用私式存取之界面與功能，還有目錄服務及檔案存取。 IEEE 802.11標準定義了實體層和mac層之協定規範，允許 無線區域網路及無線設備製造商在一定範圍内，建立互相操作網 7 1281323 路設備。IEEE 802.11之MAC層必須與LLC層相容，以利於相互 間之操作。 參閱第一圖，為IEEE 802.11所定義之MAC資料訊框格式。 MAC資料訊框100包括：訊框控制攔位110、持續時間/標示符攔 位120、位址1欄位130、位址2欄位140、位址3欄位150、順 序控制欄位160、位址4攔位170、訊框主体欄位180以及錯誤檢 查搁位190。其中順序控制搁位160包括兩個次搁位：片段號碼 (Segment Number)攔位 161 及順序號碼欄位（sequence Number， SN) 162。參閱第二圖，為IEEE 802.11所定義之MAC管理訊框 格式。MAC管理訊框200包括：訊框控制欄位21〇、持續時間/ 標示符攔位220、位址1欄位230、位址2攔位240、位址3欄位 250、順序控制攔位260、訊框主体攔位280以及錯誤檢查欄位 290。其中順序控制攔位260包括兩個次欄位：片段號碼攔位261 及順序號碼攔位262。 請再同時參閱第一圖及第二圖，其中位址1攔位13〇、230為 接收工作站位址（Receiver Address，RA)欄位，即待傳送之MAC 服務資料單元（MAC Service Data Unit，MSDU)或MAC管理協 定資料單元（MAC Management Protocol Data Unit，MMPDU )之 接收工作站位址。接收工作站位址由48個位元構成，不同接收工 作站位址對應不同接收工作站，而位址“FF : FF : FF : FF : FF : FF則為廣播位址。順序控制欄位160、260包括兩個次欄位：片 段號碼攔位16卜261以及順序號碼欄位162、262。其中順序號碼 係訊框攜帶之MSDU或MMPDU之順序號碼。每一個MSDU或 MMPDU都有一個順序號碼，其值的範圍從〇到4〇95。 芩閱第三圖，為本發明實施例中無線通訊系統之架構圖。在 本實施方式中，無線通訊系統包括複數個無線區域網路裝置 1000、20⑻及3000。其中，無線區域網路裝置1〇⑻傳送資料給 複數個無線區域網路裝置2000、3000，且可傳送廣播資料。 8 1281323 芩閱第四圖，為本發明之無線區域網路裝置1000之實施方式 丄=組方塊圖。在本實施方式中，無線區域網路裝置1000包括' =協if組11GG、MAC層協定模組12GG以及實體層協定模植 。其中南層協定模組！ i⑻用於執行應用層、表現層、會談層、 拖ί層、網路層&LLC層等協定層之功能，把所需傳送之資料轉 ^為MSDU，且把該MSDU及其接&工作站位址傳送給mac ^ 協定模組1200。 曰 槿电^層協定模組12⑻包括：賴界面121G、齡號碼編號 核、，且122G以及MAC處理模組123G。f料界面12iq用於從.The Reference Model (hereinafter referred to as the qSI model) divides the network protocol system into seven layers. The bottom layer of the system is the physical layer (hereinafter referred to as PHY), which defines the media, transmission methods, and wiring methods. The second layer of the system is the Data Link Layer, which defines how to ensure that the data is transmitted correctly, and the information field is added to the information to form a frame. The data link layer includes two sub-layers, namely, Logical Link Control (LLC) layer, which is responsible for correctly transmitting data to the physical layer, and Media Access Control (hereinafter referred to as MAC). Layer, responsible for controlling and linking the entity layer to the physical media. The third layer of the system is the NetworkLayer, which is responsible for data routing, including translating addresses, finding the best path, and managing traffic. The fourth layer of the system is the Transport Layer, which ensures the order and correctness of the data. The fifth layer of the system is the Session Layer, which defines the link dialog, error handling, and logical address name translation. The sixth layer of the system is the Presentation Layer, which handles data formats, including format conversion, encryption, decryption, compression, and restoration. The seventh layer of the system is the application layer (Applicatl〇n] Layer) ^ The interface and function of the private access for the supply, as well as directory services and file access. The IEEE 802.11 standard defines a protocol specification for the physical layer and the mac layer, allowing wireless local area network and wireless device manufacturers to establish interoperable network 7 1281323 devices within a certain range. The MAC layer of IEEE 802.11 must be compatible with the LLC layer to facilitate interoperability. Refer to the first figure for the MAC data frame format defined by IEEE 802.11. The MAC data frame 100 includes: a frame control block 110, a duration/tag block 120, a bit 1 field 130, a bit 2 field 140, a bit 3 field 150, a sequence control field 160, Address 4 is blocked 170, frame body field 180, and error check shelf 190. The sequence control shelf 160 includes two secondary seats: a segment number block 161 and a sequence number field (SN) 162. Refer to the second figure for the MAC management frame format defined by IEEE 802.11. The MAC management frame 200 includes: a frame control field 21, a duration/identifier block 220, a bit 1 field 230, a bit 2 block 240, a bit 3 field 250, and a sequence control block 260. The frame body block 280 and the error check field 290. The sequence control block 260 includes two sub-fields: a segment number block 261 and a sequence number block 262. Please refer to the first picture and the second picture at the same time, where the address 1 block 13 〇, 230 is the Receiver Address (RA) field, that is, the MAC Service Data Unit (MAC Service Data Unit, to be transmitted). MSDU) or the receiving workstation address of the MAC Management Protocol Data Unit (MMPDU). The receiving station address is composed of 48 bits, and the different receiving station addresses correspond to different receiving stations, and the address "FF: FF: FF: FF: FF: FF is the broadcast address. The sequence control fields 160, 260 include Two sub-fields: segment number block 16 261 and sequence number field 162, 262. The sequence number is the sequence number of the MSDU or MMPDU carried by the frame. Each MSDU or MMPDU has a sequence number, the value of which The scope of the invention is from 〇 to 4〇95. The third figure is an architecture diagram of a wireless communication system in the embodiment of the present invention. In the embodiment, the wireless communication system includes a plurality of wireless local area network devices 1000, 20(8) and 3000. The wireless local area network device 1 (8) transmits data to a plurality of wireless local area network devices 2000, 3000, and can transmit broadcast data. 8 1281323 Referring to the fourth figure, the wireless local area network device 1000 of the present invention Embodiment 丄=Group Block Diagram. In the present embodiment, the WLAN device 1000 includes '=Co-if group 11GG, MAC layer protocol module 12GG, and entity layer protocol model. The south layer protocol module! i(8) is used to perform the functions of the application layer, the presentation layer, the talk layer, the drag layer, the network layer & the LLC layer, and the like, and convert the data to be transmitted to the MSDU, and connect the MSDU to the & The workstation address is transmitted to the mac ^ protocol module 1200. The interface module 12 (8) includes: a Lai interface 121G, an age number number core, and a 122G and a MAC processing module 123G. The f interface 12iq is used for the slave.
協定模組1100接收MSDU及其接收工作站位址，並將苴傳送二 順序號碼編雜組⑽。MAC歧触咖祕根據管理^ =及其接收工作站位址，並將其傳送給順序號碼= 的:生之_而用於在連線前幫忙連線或是連線後 順序號碼編號模組1220用於從資料界面121〇接收msdu& 其接收工作站位址，並從MAC處理模組123〇接收MMpDu及其 接收工作站紐，還麟騎触之MSDU及MMpDu編順序號 碼。順序唬碼編號模組1220包括··選擇模組1221、第一判斷模組 1222、计數模組庫1223、第二判斷模組1224及設定模組丨225。 計數模組庫1223提供複數個計數模組，例如，第二計數模組 1223a、第二計數模組122313".第^十數模組1223n。選擇模组122\ 用於從資料界面1210接收MSDU及其接收工作站位址’、、以及從 MAC處理模組1230接收MMPDU及其接收工作站位址，還用於 根據所接收之資料單元MSDU或MMPDU之接收工作站位址於計 數模組庫1223中選擇兩個計數模組，分別用於對msdu及 MMPDU編順序號碼。第一判斷模組1222用於判斷所接收之資料 單元是否為MMPDU。第二判斷模組1224用於判斷上 ^ 所編之順序號碼是否小於一預設邊界值。若是，則設定模組1225 9 1281323 把所接收之資料單元之順序號碼設為上述計數模組所編之順序號 碼，若否’則設定模組1225把所接收之資料單元之順序號碼設為 預設順序號碼。設定模組1225還用於更新計數模組庫1223。 MAC處理模組1230還用於給MSDU及MMPDU加上訊框控 制等相關資訊攔位而形成MPDU，並把順序號碼編號模組122〇對 MSDU及MMPDU所編之順序號碼應用到所形成之mpdU之順序 號碼搁位。 實體層協定模組1300係用於給MAC層協定模組12〇〇所形成 之MPDU加上相關資訊攔位形成一實體、層協定資料單元（ρΗγ Protocol data Unit，PPDU)，並把 PPDU 傳送出去。 參閱第五圖，為本發明之無線區域網路裝置1〇〇〇處理資料之 流程圖。在本實施方式中，當無線區域網路裝置1〇〇〇傳送資料給 複數個無線區域網路裝置2000、3(X)0，以及傳送廣播資料時，所 傳送之資料需經過0SI各層協定處理後再傳送出去。 在步驟S500，高層協定模組11〇〇對所傳送之資料進行處理， 執行應用層、表現層、會談層、傳送層、網路層及Llc層等協定 層之功此’把所需傳送之資料轉換為MSDU，並把該MSDU及甘 接收工作站位址傳送給MAC層協定模組1200。 在步驟S502，MAC層協定模組1200從高層協定模組n⑻ 接收MSDU及其接收工作站位址，並根據管理需求產生mmpdu 及其接收工作站位址。MAC層協定模組1200藉由所接收之MSDU 及所生成之MMPDU加上訊框控制等相關資訊欄位而形成 MPDU，並把所形成之MPDU傳送給實體層協定模組13⑻。其呈 體操作流程參閱第六圖。 在步驟S504,實體層協定模組i3〇〇&MAc層協定模組12〇〇 接收MPDU ’ MPDU加上相關資訊搁位而形成ppDu，並把PPDU 傳送出去。 參閱第六圖，為本發明之MAC層協定模組之訊框順序號碼編 10 1281323 號方法之流程圖。 在步驟S600,資料介面1210從高層協定模組；ποο接收MSDU 及其接收工作站位址（RA)，並將其傳送給順序號碼編號模組122〇The protocol module 1100 receives the MSDU and its receiving station address and transmits the second sequence numbering group (10). The MAC conflicts according to the management ^ = and its receiving workstation address, and transmits it to the sequence number =: raw _ and used to help connect before the connection or after the serial number number module 1220 It is used to receive the msdu& receiving workstation address from the data interface 121, and receive the MMpDu and its receiving workstation from the MAC processing module 123, and the serial number of the MSDU and MMpDu. The sequential weight number module 1220 includes a selection module 1221, a first determination module 1222, a counting module library 1223, a second determination module 1224, and a setting module 225. The counting module library 1223 provides a plurality of counting modules, for example, a second counting module 1223a, a second counting module 122313 ". a tenth module 1223n. The selection module 122\ is configured to receive the MSDU and its receiving workstation address from the data interface 1210, and receive the MMPDU and its receiving workstation address from the MAC processing module 1230, and also for receiving the MSDU or MMPDU according to the received data unit. The receiving workstation address is selected in the counting module library 1223 to select two counting modules for respectively programming the msdu and MMPDU numbers. The first determining module 1222 is configured to determine whether the received data unit is an MMPDU. The second judging module 1224 is configured to determine whether the sequence number edited by the top is less than a preset boundary value. If yes, the setting module 1225 9 1281323 sets the sequence number of the received data unit to the sequence number edited by the counting module, and if not, the setting module 1225 sets the sequence number of the received data unit as a pre-order. Set the sequence number. The setting module 1225 is also used to update the counting module library 1223. The MAC processing module 1230 is further configured to add an MPDU to the MSDU and the MMPDU by adding information related to the frame control, and apply the sequence number number module 122 to the sequence number edited by the MSDU and the MMPDU to the formed mpdU. The order number is placed. The physical layer agreement module 1300 is configured to form an entity, a layer protocol data unit (PPDU), and transmit the PPDU to the MPDU formed by the MAC layer protocol module 12 to form a physical and layer protocol data unit (PPDU). . Referring to the fifth figure, a flowchart of processing data by the wireless local area network device of the present invention. In the present embodiment, when the wireless local area network device 1 transmits data to a plurality of wireless local area network devices 2000, 3 (X) 0, and transmits broadcast data, the transmitted data is subjected to OSI layer protocol processing. Then send it out. In step S500, the high-level agreement module 11 processes the transmitted data, and performs the functions of the application layer, the presentation layer, the talk layer, the transport layer, the network layer, and the protocol layer, etc. The data is converted to an MSDU, and the MSDU and the Gan receiving workstation address are transmitted to the MAC layer protocol module 1200. In step S502, the MAC layer protocol module 1200 receives the MSDU and its receiving workstation address from the high layer protocol module n(8), and generates mmpdu and its receiving workstation address according to management requirements. The MAC layer protocol module 1200 forms an MPDU by receiving the MSDU and the generated MMPDU plus the relevant information field such as frame control, and transmits the formed MPDU to the physical layer protocol module 13 (8). See Figure 6 for the rendering process. In step S504, the physical layer protocol module i3〇〇&MAc layer protocol module 12 receives the MPDU ' MPDU plus the relevant information to form a ppDu, and transmits the PPDU. Refer to the sixth figure, which is a flowchart of a method for numbering frame sequence number 101281323 of the MAC layer protocol module of the present invention. In step S600, the data interface 1210 receives the MSDU and its receiving workstation address (RA) from the high-level protocol module; ποο, and transmits it to the sequence numbering module 122.
之選擇模組1221〇MAC處理模組1230根據管理需求產生MMPDU 及其接收工作站位址（RA)，並將其傳送給順序號碼編號模組122〇 之選擇模組1221。所產生之MMPDU用於在連線前幫忙連線，或 是連線後作為斷線的通知。 在步驟S602，迸伴犋殂丨m接收資料單元MSDU及其接收 工作站位㈣及t解元MMPDU及其雜工作雜址後’，、根據 所接收之資料單元之接收卫作站位址於計數模組庫m3中選擇出 組’其分卿於MMPDU及MSDU編順序號碼。在本 貝= ' 巾’所接收之㈣單元之接收工作站位址汹該資料單 域網路裝置2_，舉例而言，選擇模組1221 =擇=-禮_ 1223a及第二計數漁1223b，分_於 該資料單元係傳送給其他無線區二 位址為廣播工作站位址，則選擇其他計數模組== 占 他Him單元或廣播資料單元編順序號碼。 為刪聊。若是 ==32 接收之資料單元是否 MSDU，而執行步驟〜6〇6,右不是，則資料單元為 在步驟S606，第一斗, MMPDU進行編順序卢碼十二且22如根據第-函數對所接收之 ⑴=糾，其tfit、在本實施方式中，第—函數為F MMPDU之次序，故=傳达給播線區域網路裝置2_之 2000 1281323 數。 在步驟S608，第二計數模組1223b根據第二 MSDU進行編順序號碼（SN)。在本實施方式中，第二于 (X) =x+l，其中x定義為傳送給無線區域網路裝置2⑻〇、 MSDIJ之次序，故傳送給無線區域網路裝置2〇⑻之第一 之順序號碼編號為2，第二個順序號碼編號為3，以此類推。 ⑽在施方式中，第二函數可為其他線性函數Ϊ其他類型 函數。在本貫施方式中，第二函數與第—函數不同。在其他每 方式中，第二函數與第一函數可以相同。 八貝g 在，:驟S6U) ’第二判斷模組1224判斷上述第—計數模电 值組1223b所編之順序號碼是否小於預設邊界 值在本貝施方式中，該預設邊界值為4096。 一如果小於預設邊界值，在步驟S612，設定模、組1225把資料 兀之順序號碼奴為上料數模組所編之順賴碼（sn)。在 練單元為MMPDU，則把資料單元之順序號碼i ，為弟-計數模組1现所編之順序號碼;若資料單元為msdu， =貧料單元之順賴碼設定為第二計數池m3b所編之順序 號碼。The selection module 1221, the MAC processing module 1230 generates the MMPDU and its receiving station address (RA) according to the management requirements, and transmits it to the selection module 1221 of the sequence number numbering module 122. The generated MMPDU is used to help connect before the connection, or to notify the disconnection after the connection. In step S602, the partner 犋殂丨m receives the data unit MSDU and its receiving station bit (4) and the t-deletion MMPDU and its miscellaneous work miscellaneous address, and receives the address of the receiving station according to the received data unit. In the module library m3, the group 'chosen' is selected in the MMPDU and the MSDU sequence number. The receiving station address of the (4) unit received by Benbe = 'Tape' is the data single area network device 2_, for example, the selection module 1221 = select = - 礼 1223a and the second count fishing 1223b, _ If the data unit is transmitted to the other wireless area and the address is the broadcast station address, select another counting module == to occupy the order number of his Him unit or broadcast data unit. For the purpose of deleting. If it is ==32, if the received data unit is MSDU, and the steps ～6〇6 are performed, the right is not, then the data unit is in step S606, the first bucket, the MMPDU is programmed in the order of Lu 12 and 22 according to the first-function pair The received (1)=correction, its tfit, in the present embodiment, the first function is the order of the F MMPDU, so = the number of 2000 1281323 transmitted to the broadcast area network device 2_. In step S608, the second counting module 1223b performs a sequence number (SN) according to the second MSDU. In the present embodiment, the second is (X) = x + l, where x is defined as the order transmitted to the wireless local area network device 2 (8) MS, MSDIJ, so it is transmitted to the first of the wireless local area network device 2 8 (8) The sequence number is numbered 2, the second sequence number is numbered 3, and so on. (10) In the mode, the second function can be other linear functions Ϊ other types of functions. In the present embodiment, the second function is different from the first function. In every other way, the second function can be the same as the first function. The eighth judgment module 1224 determines whether the sequence number edited by the first-count mode power value group 1223b is smaller than a preset boundary value. In the Bebesch mode, the preset boundary value is 4096. If it is less than the preset boundary value, in step S612, the setting mode and the group 1225 replace the sequence number of the data as the code (sn) compiled by the loading module. When the training unit is an MMPDU, the sequence number i of the data unit is the sequence number currently programmed by the brother-counting module 1; if the data unit is msdu, the code of the poor unit is set to the second counting pool m3b The serial number compiled.
次如，不小於預設邊界值，則執行步驟S6M，設定模組丨 把貧料單元之順序號碼設定為預設順序號碼。 該預設順序號碼為0。 貝⑪万式中 在步驟S616，設定模組150根據步驟S612或S614之設定結 果對計數模組庫1223中的計數模組進行更新。在本實施方式中: 設，模組⑵5對第-計數模組1223a或第二計數模組⑵北進行 it坟模組1225把msdu狀从及所編之轉號碼，以及 U及其RA及所編之順序號碼傳送給mac處理模組1230。 在步驟S618，MAC處理模組1230接收MSDIJ及其接收工作 站位址及所編之順序號碼，或MMpDU及其接收工作站位址及所 12 1281323 .編之順序號碼，並將所接收之MSDU《MMPDU加上訊框控制等 相關資訊攔位而形成MPDU，並將設定模組1225對MSDu或 .MMPDU所編之順序號碼應用於所形成之Mpmj之順序號碼搁 位，然後將MPDU發送給實體層協定模組13〇〇。 -、芩閱第七圖，為本發明之無線區域網路裝置1〇⑻另一實施方 式之模組圖。在本實施方式中，在MAC層協定模組12〇〇中，鱼 上逃實施例之_在於MAC處理層咖先透過轉介面咖 ，尚層協定模組測接收MSDU及其接收工作站位址，並根據 官理需求產生MMPDU及其接收玉作麵址。MAC處理層123〇 > t rDu及所產生之MMPDU加上訊框控制等相關資訊 搁位而形成MPDU，並傳送給順序號碼編號模組122〇。在本實施 加侧#訊獅包括順雜碼攔位，_序號瑪編號 旲、、且20對所形成之MPDU之順序號碼攔位進行更新。 不勺㈣中，祖處理模組1230所加相關資訊攔位 不包括順序賴嫌，顏號㈣騎形紅MpDU進行 ’順序號碼編號触122G把所形成之 f組_。本實施方式之其他構成組件與第一 貝轭方式之構成組件功能相同，因此不再贅述。 :本發明無線區_路裝置將不同接缸伽錄之應^及 MPDU分開編順序號碼’並應用到所形成之MpDu之順序號碼 攔位，對應接收裝置可以使用一定的順序檢查所接收之卿u之 虎=位，過濾造假管理訊框或f料訊框，從 人攻擊及拒絕服務攻擊。 t兄又叫 本發明無線區域轉裝置之訊_序 rit^L^s；quence c〇ntr〇° ^ 定理訊框可以使用本發明方法，還有擴展身 (Extensile Authenticate Protoc〇] , EAp) 13 1281323 以使用本發明方法。 精神所作之等效修飾或變二聽Ϊ 【圖式簡單說明】 圖係IEEE80ZU定義之MAC f料訊框 弟一圖係IEEE 802.11定義之MAc管理訊框 ^圖係本發明實施财鱗通 弗四圖係本發明之無線區域網路裝 施 冗=^無線區域網路裝置處；資==塊圖。 本發批MAC層協魄組之赌順稍觸號方法之 ^圖係本發明之無線區域網路裝置另—實施方式之模組方塊 100 110 、 210 120 、 220 130 、 230 140 、 240 150 、 250 160 、 260 16 卜 261 162 、 262 170 180 、 280 190 、 290 200 【主要元件符號說明】 MAC資料訊框 δίΐ框控制搁位 持續時間/標識符攔位 位址1攔位 位址2攔位 位址3攔位 順序控制攔位 片段號碼搁位 順序號碼攔位 位址4搁位 訊框主體攔位 錯誤檢查襴位 MAC管理訊框 1281323 無線區域網路裝置 1000 、 2000 、 3000 高層協定模組 1100 MAC層協定模組 1200 資料介面 1210 順序號碼編號模組 1220 選擇模組 1221 第一判斷模組 1222 計數模組庫 1223 第一計數模組 1223a 第二計數模組 1223b 第N計數模組 1223η 第二判斷模組 1224 設定模組 1225 MAC處理模組 1230 實體層協定模組 1300If it is not less than the preset boundary value, step S6M is executed, and the setting module 设定 sets the sequence number of the lean unit to the preset sequence number. The preset sequence number is 0. In step S616, the setting module 150 updates the counting module in the counting module library 1223 according to the setting result of step S612 or S614. In this embodiment, it is assumed that the module (2) 5 performs the it-grave module 1225 on the first-counting module 1223a or the second counting module (2), and the number of the msdu-like and edited numbers, and the U and its RA and the The programmed sequence number is transmitted to the mac processing module 1230. In step S618, the MAC processing module 1230 receives the MSDIJ and its receiving workstation address and the sequence number programmed, or the MMpDU and its receiving workstation address and the serial number of the 12 1281323, and receives the received MSDU "MMPDU". The MPDU is formed by adding relevant information blocks such as frame control, and the sequence number programmed by the setting module 1225 to the MSDu or .MMPDU is applied to the sequence number of the formed Mpmj, and then the MPDU is sent to the physical layer protocol. Module 13〇〇. - Figure 7 is a block diagram of another embodiment of the wireless local area network device 1 (8) of the present invention. In the present embodiment, in the MAC layer protocol module 12, the fish escape embodiment is that the MAC processing layer first passes the referral face coffee, and the layer protocol module receives the MSDU and its receiving workstation address. According to the needs of the government, the MMPDU and its receiving jade address are generated. The MAC processing layer 123 〇 > t rDu and the generated MMPDU plus frame control and other related information are placed to form an MPDU, and are transmitted to the sequence number number module 122. In this implementation, the add-on #讯狮 includes a punctual code block, a _ sequence number 旲, and 20 pairs of the formed MPDU sequence number block is updated. In the case of not scooping (4), the relevant information block added by the ancestor processing module 1230 does not include the sequence suspicion, and the face number (4) rides the red MpDU to perform the sequence number number 122G to form the f group _. The other constituent components of the present embodiment have the same functions as those of the first conjugated mode, and therefore will not be described again. The wireless zone_road device of the present invention separates the sequence number of the different martial arts and the MPDU and applies it to the sequence number of the formed MpDu, and the corresponding receiving device can check the received order using a certain order. u tiger = bit, filter fraud management frame or f message frame, from human attacks and denial of service attacks. The t-brother is also called the wireless zone transfer device of the present invention. The sequence rit^L^s;quence c〇ntr〇° ^ Theorem frame can use the method of the present invention, and the extension body (Extensile Authenticate Protoc〇), EAp) 13 1281323 to use the method of the invention. Equivalent modification or change of the spirit of the spirit [Simplified description of the diagram] The figure is defined by the IEEE80ZU MAC f message frame, the picture is the IEEE 802.11 definition of the MAc management frame ^ picture system of the present invention implementation of the financial scales Tongfu four The figure is a wireless local area network installation of the present invention = ^ wireless area network device; capital == block diagram. The wireless layer network device of the present invention is a module block 100 110 , 210 120 , 220 130 , 230 140 , 240 150 of the present invention. 250 160 , 260 16 261 162 , 262 170 180 , 280 190 , 290 200 [Main component symbol description ] MAC data frame δ ΐ 控制 box control shelf duration / identifier block address 1 block address 2 block Address 3 Intercept Sequence Control Block Fragment Number Placement Sequence Number Block Address 4 Placement Frame Body Block Error Check Location MAC Management Frame 1281323 Wireless LAN Device 1000, 2000, 3000 High Level Protocol Module 1100 MAC layer protocol module 1200 data interface 1210 sequence number number module 1220 selection module 1221 first determination module 1222 counting module library 1223 first counting module 1223a second counting module 1223b Nth counting module 1223η Second judging module 1224 setting module 1225 MAC processing module 1230 physical layer agreement module 1300
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