致、發明說明： 【發明所屬之技術領域】 本發明提供-種功率節省方法，尤指-種用於—無線傳輸系統中的工作 站功率節省方法。 【先前技術】 、網路能連接在不同地點、不同使用者的終端機，使數位資料快速有效率 的流通傳遞，各種訊息、資料、知識也得以為網路上眾多的使用者分享。 尤其是近年來無線網路(Wireless network)的發展，更能解除網路傳輸線 對、、、；鳊機的束缚，讓無線上網的終端機具有可攜(p〇rtable)及機動(ffl〇bHe) 的特性’能隨時隨地為使用者提供存取網路資源的能力。 、由於無線區域網路正逐漸受到重視，為了使各種競爭產品之間能相容互 L 製°丁了 IEEE 802.11 無線區域網路（wireiess lan)的標準。ieee =2· U主要目的是要製定一套適合在無線區域網路環境下作業的通訊協 疋最重要的工作，就是要製定出MAC (Medium Access Control)層和實 體層。因此IEEE 802.11的參考模式主要分成兩部份，第一部份是製定 出適用於所有無線網路系統的介質訪問控制(Medium Access c〇ntr〇1，ΜΑ〇 規袼，設計出和實體層無關的MAC協定。第二部份則是製定出和傳輸媒介 相關的實體層規格。 /青參考圖一。圖一為一典型（譬如說是1£咫8〇211規範下的）無線網 路系統10之架構示意圖。網路系統1〇中有一伺服器S1，複數個擷取點 (Access Point)(圖一中繪出兩個擷取點Apl及Ap2做為代表）以及複數 個工作站（圖一中以四個工作站STA卜STA2、STA3以及STA4做為代表）。 工作站STA1至STA4、以及擷取點API、AP2都具有無線網路的功能；換句 1262003 .............................. .： a舌說，各終端機及各控制站都能發射、接收無線訊號以傳遞資料及訊息， 而廷些資料也都符合統一的網路協定(protocol) 。各擷取點API、AP2則分 ^連接於伺服器S卜使控制站與恤器S1間也能互相交換資料。區域R1 就代表擷取點API及工作站STM、STA2能有效交流無線訊號的區域；在此 區域之外，就無法清楚完整地接收到擷取點仆卜工作站STA1及似無線 訊號。同理，區域R2就代表娜點AP2、工作站STA3、STA4間能有效交換 無線訊號的區域。伺服！i S1中繼各擷取點_訊號，擴大無線網路ι〇中 各工作站有效交換資料的範圍。 工作站STA1與擷取點AP1之間的資料是藉由封包的傳送來溝通的。在 =的^送触，工作站處紅作狀態，因此是比較耗能的行為。如 二工站STA1不需要傳送封包時，則工作站⑽可以進入省電模 =痛=要的能源雜。根據術.11的標準，為了傳送性能的考量，一 以分成好幾個子封包(Fragment)分批傳送到目的地，而在傳 遞适些子封包時，除了最後—個子封包之外，每個封包將在「更多資=傳 固ma)的模式τ，讀站簡從第—個子封包的傳始到最後一 :封匕傳达完成’都是處於工作雜(Aetive MQde)，因此 工作站STA都必須消耗功率。 、丰又夺間内 睛參考圖二。圖二係為先前傳送子封包時消耗 包16被分誠_子封包。第_個子封包從時_ ti開=,°圖—二的封 子封包於時間點t2傳送完成。每個子封包與子封i二都—有直j 傳輸工棺時間，這段時_沒#子封包傳送但卻有功 有-段 ，要由幾個原因造成：-是子封包與子封包之間二植時 存取延遲時間（Network Access Delay)。通常在雨料^間，—疋網路 理想上是比實際上少的，但是，由於實際的8〇2 u傳輪^^間的空槽時間 協定」（Contention-based protocol)，因此，每耸胁羊奪的 多等待-段時間，這段時間就是延遲時間。 、（、專輸的子封包必須 lM(f〇3 的傳t先^術Γ⑽輸巾，祕猶是在子耽的讀錢子封包之門 的傳輸工檔，工作站都是處於消牦功率的狀態。然而 ί匕之間 空棺卻是不必要的功率消辨段，傳触檀愈長，額外的輸 2„能量浪費。對於現今講求電子產品的待機時_功二的 茜求下，先前的封包傳送實在具有明顯可改進之處。 -力丰㈣貝的 【發明内容】 作站1項，揭露-觀於—鱗傳⑽、統中的工 =在=_雛信標中—第—信標與以該第_信標鱗下_^信= -仏之間的時間區段，傳送複數個子封包至該工作站今: 信ϊ後的不同時間間隔接收該複數個子封包，該工二功率節 /匕& .¾该工作站於該第一信標之後所接收之該複數個子 信標的時間間隔小於-預定時間時’將-傳送至該工作站 作站於設成啟動，使得該卫作站處於工作模式；以及當該工 -預之後所接收之該子封包與該第—信標的時_隔不小於 :實施方式】 、月4考圖一。圖二係為本發明一無線傳輸系統中一擷取點傳送複數個 伙的排隊方法之示意圖。欲傳送的封包21將透過無線區域 、鹏26傳至_路内的一工作站。如之前所述，_ 802· 11的標準， 為了傳迗性能的考量，一個傳送封包可以分成好幾個子封包 (Fragment一)分批傳送到目的地，所以，首先將封包21分割成η個子 封包(如圖二中編號1至編號η的子封包），此η個子封包按照順序於傳送 排隊22中等候傳送至單封包介質訪問控你缓衝記憶體％ *接買’ 禪囑 ⑸推-packet MAC buffer)。圖中所示為編以的子封包先傳至稍 ^訪1控制緩衝德體24 ’接著，再由單封包介質訪問控制緩衝記 憶體24傳至無線區域網路26以到達該1作站。在傳送的過程中會歷經兩 個日:間亡的延遲’-疋排隊輯，另—是·延遲，這些時間上的延遲將 牽涉到母個子封包到達一工作站的間隔時間。 ㈣傳輸系統其傳輸方式屬於觀·11規範。#此無線傳輸系 的工作站將進人—省電模式。省電模式是指讓系統以最少 不必要的#雷、i 1甚至讓部分電路(比如說是功率放大器)關閉，以節省 不斷的發送-了肖—I侧目聯絡，會 每兩個相鄰的信枳之二:右：二於這蝴^票皆具有固定周期，因此， 沖，即你曰：'、曰二有一固定的時間區段。為了接收每次的周期性 恢^成工作=於省電权式的工作站，也必須於每次接受周期性信標之前 同步化來完成。㈣现點讀，可紅作站與娜點之間的時間 仿开另Γ —触點在傳送封包至卫伽的過程，會夾帶—個「更多資料 位凡」们更夕貝枓 表示會有大量的封㈣候傳送至工作站，m」設成啟綠敝)時， 工作狀態。另一方面，如果「更 此/知工作站必須一直處於 示工作站進入省電模式。 、/4/f几」没成失能(Disable)時，則指 方法Γίίί四此制於—無線傳輸⑽紅作站功率節省 點如何於對於_個處於二電二發明之卫作站功率節省方法說明一擷取 在步_中該_送封包’並翻省電的目的。 操取點傳送職。細10中該 作站如果此時有複數個子封包要傳送 1262003 5 .: .：； 至工作站時，藉由離最近的欲傳送信標（在此一第一信標來表示）傳送—通 知訊號(traffic indication)至該工作站。步驟120中該工作站收到通= 虎後，回傳一省電論詢控制封包(PS_P〇11 c〇ntr〇l packet)至該擷取點。 於步驟130，該擷取點識別出傳來的省電論詢控制封包後，傳送一緩衝封包 (buffered packet)至該工作站。步驟14〇，該工作站會以不同的時間點^ 收到各個複數個子封包，如果所接收子封包離第一信標的時間間隔小於一 預=寺間時’則將「更多資料位元」（M〇re Data bit)設成啟動⑽祕 使得該工作站處於工作模式(Active M〇de)。相對的，於步驟15〇中，如 所接收子封包離第-信標的時間間隔不小於一預定時間時，則將「更多次 料位元」（MQre Data bit)設成失能(Disable)，使得該工作站處於省=DESCRIPTION OF THE INVENTION [Technical Field] The present invention provides a power saving method, and more particularly, a power saving method for a station in a wireless transmission system. [Prior Art], the network can be connected to terminals of different locations and different users, so that digital data can be quickly and efficiently distributed, and various information, materials and knowledge can be shared by many users on the network. In particular, in recent years, the development of the wireless network has been able to remove the shackles of network transmission lines, and to make the wireless Internet terminals portable (p〇rtable) and mobile (ffl〇bHe). The feature 'can provide users with the ability to access network resources anytime, anywhere. As wireless local area networks are gaining attention, in order to make compatible products compatible with each other, IEEE 802.11 wireless regional network (wireiess lan) standards. The main purpose of ieee =2· U is to develop a communication protocol suitable for working in a wireless LAN environment. The most important task is to develop a MAC (Medium Access Control) layer and a solid layer. Therefore, the IEEE 802.11 reference mode is mainly divided into two parts. The first part is to develop media access control (Medium Access c〇ntr〇1, which is designed and implemented independently of the physical layer). The MAC protocol. The second part is to develop the physical layer specifications related to the transmission medium. / Green reference Figure 1. Figure 1 is a typical (for example, 1£咫8〇211 specification) wireless network system Schematic diagram of architecture 10. There is a server S1 in the network system, a plurality of access points (the two points of drawing Apl and Ap2 are represented in Figure 1) and a plurality of workstations (Fig. 1 It is represented by four workstations STA, STA2, STA3 and STA4. The workstations STA1 to STA4, as well as the capture point API and AP2 all have the function of wireless network; in other words 1262003 .......... .................... .: A tongue said that each terminal and each control station can transmit and receive wireless signals to transmit data and messages. It also conforms to a unified network protocol. Each access point API and AP2 are connected to the server S to make the control station. The S1 can also exchange data with each other. The area R1 represents the capture point API and the workstation STM, STA2 can effectively communicate the wireless signal area; outside this area, it is impossible to completely and completely receive the access point workstation STA1 and the like wireless signal. Similarly, the area R2 represents the area where the wireless signal can be effectively exchanged between the AP2, the workstation STA3, and the STA4. Servo! i S1 relays each point _ signal to expand the wireless network ι〇 The range of data exchanged by each workstation is effective. The data between the workstation STA1 and the capture point AP1 is communicated by the transmission of the packet. At the touch of ^, the workstation is in a red state, so it is a relatively energy-intensive behavior. If the second station STA1 does not need to transmit the packet, the workstation (10) can enter the power saving mode = pain = the required energy. According to the standard of the operation of .11, in order to transfer the performance considerations, one is divided into several sub-packages. The batch is delivered to the destination, and when the appropriate sub-packets are delivered, except for the last-sub-packet, each packet will be in the mode τ of "more resources = transfer ma", and the read station is simplified from the first sub-packet. Pass to The last one: the completion of the message is 'Aetive MQde', so the workstation STA must consume power. The rich and the inner eye refer to Figure 2. The second figure is the consumption packet 16 when the sub-packet was previously transmitted. It is divided into _ sub-packages. The _th sub-packet from the time _ ti open =, ° Figure - two seal packets are transmitted at time point t2. Each sub-package and sub-package i two - there is a straight j transmission time At this time, there is no sub-packet transmission but there is a merit-segment, which is caused by several reasons: - is the network access delay between the sub-packet and the sub-package. Usually, in the rain, the network is ideally less than the actual, but, due to the actual contention-based protocol of the 8〇2 u transmission, Waiting for the sheep to wait for more time - this time is the delay time. , (, the sub-package of the special transmission must be lM (f〇3's pass t first ^ surgery Γ (10) to change the towel, the secret is still in the transmission file of the son's reading money packet door, the workstation is in the power consumption State. However, the gap between the two is an unnecessary power segmentation, the longer the touch is, the extra energy is lost. For today’s demand for electronic products, _ 二 茜 , The packet transmission has obvious improvements. -Li Feng (four) Bei's [invention content] One station, expose-view--scale (10), the work in the system = in the =_ young beacon - the first The beacon transmits a plurality of sub-packets to the workstation in a time zone between the _^信=-仏, and receives the plurality of sub-packets at different time intervals after the signal, the second power The node/匕&.3⁄4 the workstation receives the plurality of sub-beacons after the first beacon, and the time interval is less than - the predetermined time is 'transmitted to the workstation for setting up to start, so that the station In the working mode; and when the worker-pre-received the sub-packet and the first-beacon _ is not less than: implementation mode, month 4 test 1 is a schematic diagram of a queuing method for transmitting a plurality of gangs in a wireless transmission system according to the present invention. The packet 21 to be transmitted will pass through the wireless area, Peng 26 passed to a workstation in the road. As mentioned before, the standard of _ 802·11, in order to pass the performance considerations, a transport packet can be divided into several sub-packets (Fragment one) to be delivered to the destination in batches, so First, the packet 21 is divided into n sub-packets (such as sub-packets numbered 1 to n in FIG. 2), and the n sub-packets are sequentially transmitted to the single-package medium in the transmission queue 22 to access the buffer memory%. *Buy 'Zhang 嘱(5) push-packet MAC buffer). The picture shows the sub-packages that are first transmitted to the control block 1 to control the buffer body'. Then, the single-package medium access control buffer memory 24 Passed to the wireless local area network 26 to reach the station. In the process of transmission, there will be two days: the delay of the death '-疋 queue, the other is delay, these time delays will involve the mother. Individual packets arrive at a job The interval between stations (4) The transmission system is transmitted according to the specification of the 11th. #This wireless transmission system workstation will enter the human-power saving mode. The power-saving mode means that the system is even less unnecessary #雷, i 1 or even Let some circuits (such as power amplifiers) be turned off to save constant transmission. - Xiao-I side contact, there will be two adjacent two letters: right: two, this has a fixed period. Therefore, rush, that is, you 曰: ', 曰 有一 has a fixed time zone. In order to receive each periodic recovery work = in the power-saving workstation, must also receive the periodic beacon before each Synchronization is done. (4) Read the current point, the time between the red station and the Na point can be opened another way - the contact is in the process of transmitting the packet to the Guardian, and it will be entrained - "More information" Xibei said that there will be a large number of seals (four) waiting to be transmitted to the workstation, and when m" is set to green, the working state. On the other hand, if "this / know the workstation must always be in the workstation to enter the power-saving mode. / / / / / a few" is not disabled (Disable), then the method Γ ί ί ί ί ί ί How to make the power saving point of the station for the purpose of power saving method for the servant station in the second electric two inventions, and to save the power in the step _. Take the point to transfer the job. In the case of 10, if there are multiple sub-packets to be transmitted at this time, 1262003 5 .: .:; to the workstation, by transmitting the beacon from the nearest beacon (indicated by this first beacon) - the notification signal (traffic indication) to the workstation. In step 120, after receiving the pass= tiger, the workstation returns a power save inquiry control packet (PS_P〇11 c〇ntr〇l packet) to the capture point. In step 130, the capture point identifies a transmitted power save inquiry control packet and transmits a buffered packet to the workstation. Step 14: The workstation will receive each of the plurality of sub-packets at different time points, and if the time interval between the received sub-packets and the first beacon is less than one pre-temple interval, then "more data bits" will be received ( M〇re Data bit) is set to start (10) to make the workstation in active mode (Active M〇de). In contrast, in step 15, if the time interval between the received sub-packets and the first beacon is not less than a predetermined time, the "MQre Data bit" is set to "Disable". , making the workstation in province =
Saving M〇de)。值得注意的是，圖四的方法順序只是本發較Saving M〇de). It is worth noting that the order of the method in Figure 4 is only
=，例，其順序可雜變化—樣可達縣發明節省神消簡目的 皆為本發明之涵蓋範圍。 J ㈣為主ϋ詳細說明本發明工作站功率節省方法中的步驟140和步驟 =參相五。圖五係林發财法巾工伽娜成省賴式 :例中之示意圖。圖中所示有(a)⑹⑹⑷四個子圖示。這 實 =，，其中，子圖⑷表示五個不同時 固:的 包，分別是tl的子封包丨，t2的子封包2， 二=: 子封包5。子圖⑹表示複數個周期性的信標顺^ 作站接收，而兩兩信標之間的時間區段為W。圖（c)盥圖⑷的_A工作 站的功率消粍大小，而圖(c)盥圖⑻县hrr 轴為作 (_意義將由之後的工作站的功率消耗 進入省電模式係經由如下的^斷%在本發明方法中，判斷工作站於何時 ti-t beacon 〈tbint*(l-(2) 的;的時間’ ^為工作站收到複 定時間的長二二:參=決定圖四中步謂娜^ 間隔。如果該判斷式成立的話，則將接f之子封包離之前信標的時間 文夕負料位元」設成啟動，工作站 1262003 ft作Ϊ式。如果該判斷式不成立，則將「更多資料位元」設成失能， =工作站處於省電模式。以圖五為例，w為施s，tin， 2-tb =70ms ^ t3-Wl40ms，t4-W7〇ms ^ t5-W12〇ms，α ❼.％ Wk(l-a)=iQQms’也就是說，從tl開始卫作站開始運 t3之 =始設為省電模式’到了 t4又進人工作模式，巧之後進入省電模 ^。另外，如果紐設為零，糊斷式—定永遠成立 、 的兩信標時間區段之内，工作站皆處於工作模式。 *化出現 立FI 1^^、/圖〃為本發明—種具有省電功能的無線傳齡統30之示 輸糸統3〇包含一擷取點38以及一工作站32。掏取點38包；; ^ ―處理器26。操取點38包含—單封包緩衝記情體40 及一封包分割單元44。無線傳輸系統30係為實現圖四之 方法的稍。齡點38絲以—觸時送複數個觸性沖== 兩周雛信標之間的時間區段，傳送複數個子封包。封包分割單τ元^ t封包分赋概鮮封包’這概鮮封包鱗送至單封包MAC' 1記憶體40等待操取點38傳送至工作站32。# =作站32正處於省賴式賴由下—鶴送賴轉送—通知職為 mfflc _cation)至工作站32。工作站32收到通知訊號後傳送器 4回傳-名t論詢控制封包至擷取點38。操取點38内的邏輯單元 出傳來的省電論詢㈣封包後，娜點38傳送_緩衝封包至 ^ 作站在不同的_點接收到各倾數個子封包，當所接收 一= 信標相差的時間間隔小於一預定時間時，處理器％將次^則古 成啟動使工作站32處於工作模式，當所接收子封包 二4 23 預定時間時’將「更多資料位元」設成失能二站: 在先前技術的封包傳輸中，由於不論是在子封包 間的傳輸《，工作轉是處於絲神陳g。然^傳^疋子封包之 輸空權卻是不必要的择;肖猶段，傳輸线愈長，額外的^專 wm 的能量本發明之用於—無線傳輸系統中-工作站傳送複 數= 子封包至-娜點的工作站功率節省方法中，一擷取點藉由一信 ’餅祕省賴紅轉站職接蚊擷取點傳來 itfi。备陸_不同時職接收到各個複數個子封包時，依據 所接收子封包與前-個信m目差的時關隔與 ;:=r=r票之 _ 門區p内值1，ά冑70的子封包繼績在下-個兩信標之間的時 來，_標之間的時間區段内有傳送封包的期間讓 率:Γί: 則設定工作站為省電模式，以達到節省工作站功 率的目的。，她於習知技術，本發明之 省一無線傳輸系統中功率消耗的優點。 力羊即妨法具有即 均箄iirfr為本㈣之較佳實細凡依本發日__綱，所做之 二^艾/、仏飾，皆應屬本發明專利的涵蓋範圍。 【圖式簡單說明】 圖式之簡單說明 圖為典型無線網路系統之架構示意圖。 圖二係為先前傳送子封包時消耗功率的示意圖。 圖1^=^輪系統卜娜點傳送複數個働至一工作站 輸系統的工作站功率節省方法之流程圖。 圖六為1^2 伽娜成省賴式的健實_巾之示意圖。 一" 種具有省電功能的無線傳輸系統之示意圖。 11 1262003 圖式之符號說明 10 網路系統 S1 伺服器 API 、 AP2 擷取點 Rl、R2 區域 STA卜 STA2 、STA3 、 STA4 工作站 16、21 封包 22 子封包 24 單封包介質訪問控制緩衝記憶體 26 線區域網路 30 無線傳輸系統 38 擷取點 32 工作站 34 傳送器34 36 處理器 42 邏輯單元 40 單封包MAC緩衝記憶體 44 封包分割單元 12=, for example, the order can be changed in a variety of ways - the reach of the county to save the gods and reduce the simplicity are all covered by the invention. J (d) is the main step to explain step 140 and step in the power saving method of the workstation of the present invention. Figure 5 is a diagram of Lin Facai's law, Gana, and the province's Lai: The figure shows four sub-pictures of (a)(6)(6)(4). This is true, where, subgraph (4) represents five different time-solid packets: sub-packet tl of tl, sub-packet 2 of t2, and two = sub-packet 5. Sub-picture (6) indicates that a plurality of periodic beacons are received by the station, and the time period between the two beacons is W. Figure (c) shows the power consumption of the _A workstation in (4), and Figure (c) 盥 (8) The county hrr axis is used (the meaning will be changed by the power consumption of the workstation afterwards into the power-saving mode via the following % In the method of the present invention, it is judged when the workstation is ti-t beacon <tbint*(time of l-(2); ^ is the length of the reset time received by the workstation: Na ^ interval. If the judgment is true, then set the sub-packet of f to the time of the previous beacon to start, and the workstation 1262003 ft. If the judgment is not true, then Multi-data bit is set to disable, = workstation is in power-saving mode. Take Figure 5 as an example, w is Shi, tin, 2-tb = 70ms ^ t3-Wl40ms, t4-W7〇ms ^ t5-W12〇 Ms, α ❼.% Wk(la)=iQQms' That is to say, starting from tl, the station starts to transport t3 = the power saving mode is set to the t4 and enters the working mode, and then enters the power saving mode ^ In addition, if the button is set to zero, the paste-type is always within the two beacon time segments, and the workstations are in the working mode. The existing FI 1^^, / diagram is the invention - the wireless transmission system 30 with power saving function includes a capture point 38 and a workstation 32. The capture point 38 package; ^ - "Processor 26. The operation point 38 comprises - a single packet buffer case 40 and a packet division unit 44. The wireless transmission system 30 is a method for implementing the method of Figure 4. The age point 38 is - the time to send the plural Touching === Time zone between two weeks of beacons, transmitting multiple sub-packets. Packet splitting single τ yuan ^ t packet distribution fresh packet 'This fresh packet scale is sent to single packet MAC' 1 memory 40 Waiting for the operation point 38 to be transmitted to the workstation 32. #=The station 32 is in the middle of the dependency-based transfer--the transfer is sent to the workstation 32. The workstation 32 receives the notification signal and the transmitter 4 Pass-name t-inquiry control packet to capture point 38. Take the power-saving inquiry from the logic unit in point 38 (4) after the packet, Na point 38 transmits _ buffer packet to ^ station at different _ point Received each sub-packet, when the time interval of receiving a = beacon difference is less than a predetermined time, the processor % The second time is set to enable the workstation 32 to be in the working mode, and when the received sub-packet 2 4 23 predetermined time, 'set more data bits' to be disabled two stations: In the prior art packet transmission, due to Regardless of the transmission between sub-packages, the work is in the silk god Chen g. However, the transmission of the 疋 疋 封 之 之 之 却 封 封 封 封 封 封 封 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖 肖The energy of the present invention is used in the wireless transmission system - the workstation transmits the complex number = the sub-package to the - point point workstation power saving method, a point of picking by a letter 'cake secret province Laihong transfer station to support the mosquito Take the point to come to itfi. When the backup sub-package receives each of the plurality of sub-packets at different times, it is separated according to the time difference between the received sub-packet and the previous---m.;:=r=r ticket_the value of the gate area p is 1, The sub-packet of 70 is the time between the next two beacons, and the period between the _-marks has a period of transmitting packets. Γί: Set the workstation to save power to save workstation power. the goal of. She has the advantages of power consumption in a wireless transmission system of the present invention. The force of the sheep has the right to be iirfr-based (4). The best practice is based on the date of this issue. The two ^A/, 仏 ,, are all covered by the invention. [Simple description of the diagram] A brief description of the diagram The diagram shows the architecture of a typical wireless network system. Figure 2 is a schematic diagram of power consumption when a sub-packet was previously transmitted. Figure 1 ^ = ^ wheel system Bu Na point transfer a number of 働 to a workstation transmission system workstation power saving method flow chart. Figure 6 is a schematic diagram of the 1^2 Gana-supplied sturdy _ towel. A schematic diagram of a wireless transmission system with power saving functions. 11 1262003 Symbol Description 10 Network System S1 Server API, AP2 Capture Point Rl, R2 Area STA, STA2, STA3, STA4 Workstation 16, 21 Packet 22 Subpackage 24 Single Packet Media Access Control Buffer Memory 26 Line Regional Network 30 Wireless Transmission System 38 Capture Point 32 Workstation 34 Transmitter 34 36 Processor 42 Logic Unit 40 Single Packet MAC Buffer Memory 44 Packet Segmentation Unit 12