200948103 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種通道排程方法，特別是有關於 一種應用於行動裝置的通道排程方法。 【先前技術】 全球行動通訊系統（Global System for Mobile communication，GSM)為現今廣泛使用的一種行動電話 ❹ 技術，由歐洲電信標準所（European Telecommunication Standards Institute ’ ETSI)負責制定其使用標準以及規 格。全球行動通訊系統係為一分時多工擁取（Time Division Multiple Access，TDMA)系統。對於一載波頻 率，使用分時多工擷取的方式，將一個訊框（frame)時間 切割成八個時槽’每個時槽可以用來傳送一個用戶的一 個邏輯通道的資料。此外’通用分組無線服務（General Packet Radio Service，GPRS)為全球行動通訊系統可用的 ❹一種技術，其利用全球行動通訊系統網路中未使用的通 道，提供中速的數據傳遞服務。 全球行動通訊系統以行動裝置、基地台子系統、行 動交換中心、以及與用戶相關的資料庫所組成，為一蜂 巢式網路架構。一行動裝置可連線（camp on)至一基地 台，並視該基地台作為服務基地台，以提供該行動裝置 語音通話以及資料傳輸服務。每一基地台具有一訊號涵 蓋範圍，若該行動裝置在待機模式時偵測到服務基地台 〇758-A33543TWF;MTKI-08-020 6 200948103 的訊说較弱時’則可進行基地台重選（cell reselecti〇n)， 亦即自行連線到訊號較強的鄰近基地台以作為新的服務 基地台。行動裝置包含行動設備（如手機）和用戶識別模組 兩部分。用戶識別模組又稱SIM卡，每張sim卡上均含 不同的國際行動台用戶識別竭（Internati〇nai Mobile Subscriber Identity ’ IMSI)用以識別用戶，而且一張 SIm 卡内含一微電腦晶片，可提供用戶認證及通訊保密，亦 含有記憶體，儲存各種用戶資料，如電話簿、簡訊等。 現今手機因應用戶的需要，可容納兩張SIM卡，讓 用戶使用不同電信業者或同一電信業者的雙門號。若一 台手機内僅有一套GSM/GPRS硬體的話，兩張siM卡就 必須共用同一套硬體作資料收發。然而，由於同一時間 内一套GSM/GPRS硬體只能接收單一 SIM卡之服務基地 台訊號，使得同時讓兩張SIM卡分別與各自之服務基地 台保持連線和時序同步成為一個難題。因此，本領域亟 需一種技術以解決上述問題。 【發明内容】 根據本發明之一實施例，一種通道排程方法，適用 於分時多工彌取通訊系統之行動裝置，其中行動裝置預 計於第一時間區間自第一基地台接收第一通道之第一叢 發序列，並且預計於第二時間區間自第二基地台接收第 二通道之第二叢發序列，並且其中第一叢發序列與第二 叢發序列分別包括複數第一叢發訊息與複數第二叢發訊 0758-A33543TWF;MTKI-08-020 7 200948103 息，各第一叢發訊息與第二叢發訊息分別在分時多工擷 取訊框之時槽被傳送，並且其中第二時間區間包括一第 三時間區間與第一時間區間重疊，以及一第四時間區間 與第一時間區間不重疊，通道排程方法包括：於第一時 間區間完整接收第一叢發序列之第一叢發訊息、於第四 時間區間接收一部分第二叢發序列之第二叢發訊息、根 據接收到的第一叢發訊息取得第一基地台之第一廣播資 訊、以及根據接收到的一部分第二叢發訊息取得第二基 ® 地台之第二廣播資訊。 根據本發明之另一實施例，一種行動裝置，適用於 一分時多工擷取通訊系統，包括無線收發器、第一用戶 識別模組、第二用戶識別模組以及微控制單元。第一用 戶識別模組透過無線收發器向第一基地台註冊，並且預 計於第一時間區間透過無線收發器自第一基地台接收第 -通道之[叢發序列’其+第一叢發序列包括複數第 ❿一叢發訊息。第二用戶識別模組透過無線收發器向第二 基地台註冊’並且預計於第二時間區間透過無線收發器 自第二基地台接收第二通道之第二叢發序列，其中第二 叢發序列包括複數第二叢發訊息，各第—叢發訊息與第 一叢發訊息分別在一分時多工擷取訊框之一時槽被傳 送，並且第二時間區間包括一第三時間區間與第一時間 區間重疊，以及一第四時間區間與第一時間區間不重 疊。微控料元於第-時間區間完整接收第一叢發序列 之第一叢發訊息，於第四時間區間接收一部分第二叢發 0758-A33543TWF；MTKI-08-020 8 200948103 序列之第二叢發訊息，根據接收到的第一叢發訊息取得 第一基地台之第一廣播資訊，並且根據接收到的一部分 第二叢發訊息取得第二基地台之第二廣播資訊。 【實施方式】 為使本發明之製造、操作方法、目標和優點能更明 顯易懂，下文特舉幾個較佳實施例，並配合所附圖式， 作詳細說明如下： ❹ 實施例： 在GSM/GPRS系統裡，歐洲電信標準所（ESTI)規範 了行動裝置於待機模式的行為，以達到行動性以及建立/ 接收通話的能力。當行動裝置開機時，首先會搜尋鄰近 的基地台，量測各基地台之功率，尋找功率最強的基地 台，並確認該基地台是否為所屬的電信業者。待尋找到 適當的基地台後，行動裝置會向該基地台註冊，使網路 ® 端可得知行動裝置的資訊，並且在註冊程序完成後，行 動裝置便可連線至該基地台。當行動裝置在連線至一基 地台時，會從該基地台取得一邏輯通道格式，包含上行 鏈路（uplink)通道格式以及下行鏈路（downlink)通道格 式，裡面含有基地台與行動裝置彼此傳遞資料的邏輯通 道順序。 邏輯通道大致可分為資料通道（Traffic Channel)以 及訊號通道（Signaling Channel)兩類，其中資料通道 0758-A33543TWF;MTKI-08-020 9 200948103 (Traffic Channel)可傳輸用戶的語音或數據資料，而訊號 通道（Signaling Channel)可傳輸基地台與行動裝置之間的 控制訊號。訊號通道可分為廣播通道（Broadcast channel， BCH)、共同控制通道（Common Control Channel，CCCH)、 以及專用控制通道（Dedicate control channel，DCCH)三 類。目前在GSM標準中，定義了數種廣播通道：200948103 IX. Description of the Invention: [Technical Field] The present invention relates to a channel scheduling method, and more particularly to a channel scheduling method applied to a mobile device. [Prior Art] The Global System for Mobile communication (GSM) is a mobile phone technology widely used today, and the European Telecommunication Standards Institute (ETSI) is responsible for formulating its use standards and specifications. The Global System for Mobile Communications is a Time Division Multiple Access (TDMA) system. For a carrier frequency, a frame time is cut into eight time slots using a time division multiplex method. Each time slot can be used to transmit data for a user's logical channel. In addition, the General Packet Radio Service (GPRS) is a technology available for global mobile communication systems that utilizes unused channels in the GPA network to provide medium-speed data delivery services. The Global System for Mobile Communications consists of a mobile device, a base station subsystem, a mobile switching center, and a user-related database. A mobile device can be camped on to a base station, and the base station is used as a service base station to provide voice calls and data transmission services for the mobile device. Each base station has a signal coverage range. If the mobile device detects the service base station 758-A33543TWF in the standby mode; when the MTKI-08-020 6 200948103 message is weak, the base station reselection can be performed. (cell reselecti〇n), that is, it is connected to the neighboring base station with strong signal to serve as a new service base station. The mobile device includes a mobile device (such as a mobile phone) and a user identification module. The user identification module is also called SIM card. Each sim card contains different Internati〇nai Mobile Subscriber Identity 'IMSI' to identify the user, and a SIm card contains a microcomputer chip. User authentication and communication confidentiality are provided. Memory is also included to store various user data such as phone books and newsletters. Today's mobile phones can accommodate two SIM cards in response to user needs, allowing users to use the two-door number of different carriers or the same carrier. If there is only one set of GSM/GPRS hardware in one mobile phone, the two siM cards must share the same set of hardware for data transmission and reception. However, since a set of GSM/GPRS hardware can only receive the service base station signal of a single SIM card at the same time, it is a problem to keep the two SIM cards connected to their respective service base stations at the same time. Therefore, there is a need in the art for a technique to solve the above problems. SUMMARY OF THE INVENTION According to an embodiment of the present invention, a channel scheduling method is applicable to a mobile device of a time-division multiplexed communication system, wherein a mobile device is expected to receive a first channel from a first base station in a first time interval. a first burst sequence, and is expected to receive a second burst sequence of the second channel from the second base station in the second time interval, and wherein the first burst sequence and the second burst sequence respectively comprise a plurality of first bursts The message and the second plexus sent 0758-A33543TWF; MTKI-08-020 7 200948103, each first burst message and the second burst message are transmitted in the time slot of the time division multiplexing frame, respectively, and The second time interval includes a third time interval overlapping with the first time interval, and a fourth time interval does not overlap with the first time interval, and the channel scheduling method includes: completely receiving the first burst sequence in the first time interval The first burst message, receiving a second burst message of the second burst sequence in the fourth time interval, and obtaining the first broadcast resource of the first base station according to the received first burst message And obtaining a second broadcast information of the second base ® based on a part of the received second burst message. According to another embodiment of the present invention, a mobile device is suitable for a time division multiplexed communication system, including a wireless transceiver, a first user identification module, a second user identification module, and a micro control unit. The first subscriber identity module registers with the first base station via the wireless transceiver, and is expected to receive the first channel from the first base station through the wireless transceiver in the first time interval [the burst sequence] + the first burst sequence Including multiple ❿ 丛 发 。. The second subscriber identity module registers with the second base station via the wireless transceiver and expects to receive the second burst sequence of the second channel from the second base station through the wireless transceiver in the second time interval, wherein the second burst sequence Including a plurality of second burst messages, each of the first burst messages and the first burst messages are transmitted in one time interval of one time division multiplexing frame, and the second time interval includes a third time interval and a A time interval overlaps, and a fourth time interval does not overlap with the first time interval. The micro-control element completely receives the first burst message of the first burst sequence in the first time interval, and receives a part of the second burst 0758-A33543TWF in the fourth time interval; the second bundle of the MTKI-08-020 8 200948103 sequence Sending a message, obtaining the first broadcast information of the first base station according to the received first burst message, and obtaining the second broadcast information of the second base station according to the received part of the second burst message. DETAILED DESCRIPTION OF THE EMBODIMENTS In order to make the manufacturing, operation, the objects, and advantages of the present invention more obvious, the following detailed description of the preferred embodiments and the accompanying drawings are described in detail below: 实施 Example: In the GSM/GPRS system, the European Telecommunications Standards Institute (ESTI) regulates the behavior of mobile devices in standby mode to achieve mobility and the ability to establish/receive calls. When the mobile device is powered on, it first searches for neighboring base stations, measures the power of each base station, searches for the most powerful base station, and confirms whether the base station is a carrier. After finding the appropriate base station, the mobile device registers with the base station, so that the network ® terminal can know the information of the mobile device, and after the registration process is completed, the mobile device can be connected to the base station. When the mobile device is connected to a base station, a logical channel format is obtained from the base station, including an uplink channel format and a downlink channel format, which includes the base station and the mobile device. The logical channel order in which the data is passed. Logical channels can be roughly divided into two types: data channel (Traffic Channel) and signal channel (Signaling Channel). Data channel 0758-A33543TWF; MTKI-08-020 9 200948103 (Traffic Channel) can transmit user's voice or data. The Signaling Channel transmits control signals between the base station and the mobile device. The signal channel can be divided into three types: a broadcast channel (BCH), a common control channel (CCCH), and a dedicated control channel (DCCH). Currently in the GSM standard, several broadcast channels are defined:
❹ •廣播控制通道(Broadcast Control Channel，BCCH) •頻率校正通道（Frequency Correction Channel， FCCH) •同步通道（Synchronization Channel，SCH) •短訊廣播通道（Cell Broadcast Channel，CBCH) 它們分別是用來傳送網路一般訊息、校正載波頻 率、調整訊框同步、以及傳送短訊給整個基地台的使用 者。此外，廣播控制通道包含許多重要的網路訊息，例 如基地台的下行鏈路通道格式、呼叫週期（paging duration) 等訊息。 共同控制通道主要是用來與正在進行通話的特定行 動裝置間傳遞訊息之用，包含有： •隨機存取通道（Random Access Channel，RACH) •存取允許通道（Access Grant Channel，AGCH) •呼叫通道（Paging Channel，PCH) •通知通道（Notification Channel，NCH) 在GSM網路中，每個用戶在進行通話之前，必須先 向網路取得一個空的時槽才能開始進行通訊，隨機存取 0758-A33543TWF;MTKI-〇8.〇2〇 10 200948103 通道就是讓行動裝置送出通道使用申請給基地台。至於 行動裝置所提出申請是否成功’則是由基地台在正確接 收到行動裝置送出通道使用申請之後，透過存取允許通 道，將通道使用權的確認回應送回給行動裝置。呼叫通 道主要則是當有外來電話要打給某個行動裝置之前，讓 基地台用來呼叫行動裝置。通知通道可用作傳遞語音群 呼服務，可提供用戶同時呼叫多個其他用戶。 第1圖係顯示一個由ESTI所定義的下行鏈路多訊框 ® (multi-frame)通道格式實例， 多訊框10包含51個分時多 工擷取訊框（TDMA frame)，此通道格式規範出基地二所 發出的各通道的叢發序列（burst sequence)的時序。F代表 頻率校正通道的叢發序列，其中傳送的是一固定頻率的 弦波訊號，使得在基地台涵蓋範圍内的行動裝置可校正 到與基地台使用相同的載波頻率，達到頻率的同步。S 代表同步通道的叢發序列，記載著基地台識別碼（Base Station Identity Code，BSIC)，以及基地台目前分時多工 ❹ 擷取訊框之簡化的訊框編號（Reduced Frame Number, RFN)，使得行動裝置可與基地台達到時間的同步。B代 表廣播控制通道的叢發序列，記載著基地台的無線電鏈 路組態、同步資訊等。C代表共同控制通道的叢發序列， 其中根據ESTI的定義’隨機存取通道、存取允許通道、 呼叫通道以及通知通道的叢發序列都可以在共同控制通 道的分時多工擷取訊框傳送，因此在如第1圖所示之下 行鏈路多訊框通道格式10中，共同控制通道的分時多工 0758-A33543TWF;MTKI-08-020 11 200948103 擷取訊框可能包含來自基地台的存取允許資訊、呼叫指 示（Paging Indicator, PI)資訊、或語音群呼指示資訊等。 值得注意的是，當行動裝置得知基地台目前分時多工擷 取訊框的訊框編號後，即可與基地台建立時序的同步， 並且於行動裝置端建立出與基地台同步的多訊框通道格 式，如此一來，行動裝置可在特定的時間點接收對應的 叢發序列，以正確的接收各分時多工擷取訊框之資訊。 第2圖係顯示根據本發明之一實施例所述之一行動 ® 裝置100之内部架構，行動裝置100包括無線收發器 101、第一用戶識別模組（SIM 1) 102、第二用戶識別模組 (SIM 2) 103、以及一基頻處理器104。無線收發器101 包括傳送裝置與接收裝置（圖中未示），用以將基頻訊號載 於連線之基地台的載波頻率傳送出去，以及將接收到的 高頻信號降頻成基頻信號，再傳送至基頻處理器104。基 頻處理器104係用以處理行動裝置100内部的基頻信 號，包括負責訊號解碼、時序控制、以及其它數位訊號 ® 處理等。基頻處理器104更包括一微控制單元（Micro Control Unit, MCU)105,用以控制無線收發器101在固定 時間接收單一邏輯通道的資料，且此資料只屬於用戶識 別模組102和103其中之一者所有。 第3圖係顯一種網路拓撲範例。根據本發明之一實 施例，用戶識別模組102與103共用行動裝置内的基頻 處理器104與無線收發器101，因此用戶識別模組102與 103可分別透過無線收發器101向基地台301與基地台 0758-A33543TWF;MTKI-08-020 12 200948103 302註冊、連線，並且分別透過基地台301與基地台302 雙向傳輸語音及資料封包。值得注意的是，用戶識別模 組102與103可分屬不同電信公司，如第3圖所示。在 第3圖中，基地台301屬於電信網路303，基地台302屬 於電信網路304,行動裝置100的用戶識別模組102可連 線至基地台301，而用戶識別模組103可連線至基地台 3 02。此外，如同熟習此項技藝者所公知，用戶識別模組 102與103亦可屬於同一電信公司，在此情況下用戶識別 ❹ 模組102與103也可能連線至同一電信網路之不同基地 台，甚至同一基地台。因此以上說明並非用以限定本發 明的範圍，本發明之保護範圍當視後附之申請專利範圍 所界定者為準。 當行動裝置100分別連線上基地台301與基地台 302後，可透過基地台所廣播的叢發序列内容分別取得基 地台301與基地台302目前分時多工擷取訊框的訊框編 號。接著，微控制單元105内部的時序控制裝置（圖中未 ® 示）可分別建立出與基地台301以及基地台302同步的多 訊框通道格式，用以與基地台達成時序的同步。然而， 由於無線收發器101同一時間只能接收一個邏輯通道的 資料。因此，在通道排程的過程中，微控制單元105可 賦予基地台301與基地台302的各個邏輯通道不同的優 先存取權重，比較一既定時間内且發生重疊情況時兩個 邏輯通道所對應之優先存取權重，並控制無線收發器101 完整接收兩個邏輯通道中優先存取權重較高之一者的資 0758-A33543TWF;MTKI-08-020 13 200948103 料。 第4圖係顯示一種重疊情境範例40,其中多訊框通 道格式401為行動裝置100内部所建立起與基地台301 同步之多訊框通道格式，而多訊框通道格式402為行動 裝置100内部所建立起與基地台302同步之多訊框通道 格式。如圖所示，行動裝置100預計於時間區間T1透過 無線收發器101自基地台301接收呼叫通道之叢發序 列，並且預計於時間區間T2透過無線收發器101自基地 〇 台302接收廣播控制通道之叢發序列，其中時間區間T1 與T2包含無線收發器101的準備時間以及基頻處理器 104内部之軟體或硬體準備時間，並且如圖所示時間區間 T1與T2具有部分時間區間重疊。在此情境中，由於呼 叫通道之叢發序列可能夾帶呼叫指示（PI)的資訊，而廣播 控制通道之叢發序列會定期重複傳送，因此，在通道排 程的過程中，微控制單元105可在時間區間T1賦予基地 台301較高的優先權重，並控制無線收發器101在時間 ® 區間T1完整接收呼叫通道的四個叢發訊息P0〜P3。 在重疊情況發生時，賦予優先權重的依據可以是根 據通道的種類、或根據發生重疊的叢發序列的時間順 序。例如在第4圖中所示的情境下，微控制單元105認 為呼叫通道可能夾帶重要的資訊，因此賦予呼叫通道高 於廣播控制通道的優先權重。或者微控制單元105也可 根據兩通道之叢發序列的起始時間點，選擇完整接收起 始時間點較早的叢發序列，如第4圖中的呼叫通道叢發 0758-A33543TWF;MTKI-08-020 14 200948103 序列。另一方面，微控制單元105也可以隨機地賦予優 先權重，或者輪流將較高的優先權重賦予發生重疊之兩 叢發序列之一者，或者根據使用者所設定之較為偏好的 電信業者給予其對應的叢發序列較高的優先權重。 根據本發明之一實施例，在無線收發器101完整接 收呼叫通道的四個叢發訊息P0〜P3後，微控制單元105 可更控制無線收發器101在時間區間T4繼續接收廣播控 制通道的叢發訊息B1-B3。由於在GSM系統中，基地台 ® 所傳送的資料係經過特定的通道編碼以及交錯 (interleaving)處理，因此基頻處理器104仍有能力透過一 部份的廣播控制通道的叢發訊息B1〜B3解碼出基地台的 廣播資訊。 第5圖係顯示在基地台端產生呼叫通道叢發序列的 流程示意圖。假設夾帶呼叫資訊的呼叫訊息210共具有 228位元的資料。基地台首先執行1/2編碼速率的通道編 碼，例如卷積編碼（convolution encode)，將呼叫訊息210 編碼成具有456位元的編碼資料220。接著將再藉由交錯 處理將編碼資料220打散至四個叢發訊息231、232、233、 234，例如圖中所示，將連續的編碼資料GO與G1平均 分散至四個叢發訊息’因此各叢發訊息包括了 114位元 的編碼資料。最後’基地台可將叢發訊息231〜234傳送 至行動裝置100。由此可知，如第4圖所示，當重疊情況 發生時，尤其是當基地台301與基地台302的呼叫通道 叢發序列發生時序重疊時，為了不錯過基地台302的重 0758-A33543TWF;MTKI-08-020 15 200948103 要呼叫資訊，微控制單元105可放棄一部份時序被重疊 的叢發訊息，並控制無線收發器101接收時序未被重疊 的剩餘叢發訊息。待收集完剩餘的叢發訊息後，基頻處 理器104可使用特定的解碼演算法，例如維特比（Viterbi) 解碼演算法，解碼出基地台302的廣播資訊。同樣地， 基頻處理器104也可使用該解碼演算法解碼出基地台301 的廣播資訊。 根據本發明之實施例，本發明所提出的通道排程方 ® 法可應用於各種邏輯通道叢發序列之接收時序發生部分 重疊的情境。如第4圖所示，當時間區間T4晚於時間區 間T1時，微控制單元105可先控制無線收發器101完整 接收基地台301的四個叢發訊息P0〜P3，接著再控制無 線收發器101接收一部份基地台302的叢發訊息 B1〜B3。第6圖係顯示另一種重疊情境範例60，其中時 間區間T4早於時間區間T1，微控制單元105可先控制 無線收發器101接收一部份基地台302的叢發訊息 ® B0〜B2，接著再控制無線收發器101完整接收基地台301 的四個叢發訊息P0-P3。 此外，本發明所提出的通道排程方法也可應用於多 種不同程度叢發序列重疊的情境。第7圖係顯示多種不 同程度叢發序列重疊的可能情境範例70，其中多訊框通 道格式402A〜402F分別用以顯示不同程度叢發序列的重 疊情境。如圖所示，當多訊框通道格式402A的叢發訊息 B0〜B2與多訊框通道格式401的叢發訊息P1-P3發生重 0758-A33543TWF;MTKI-08-020 16 200948103 疊時，微控制單元105可先控制無線收發器101完整接 收基地台301的四個叢發訊息P0-P3，接著再控制無線 收發器101接收一部份基地台302的叢發訊息B3，並且 分別根據接收到的叢發訊息P0〜P3與叢發訊息B3解碼出 基地台301與基地台302的廣播資訊。或者，當多訊框 通道格式402B的叢發訊息B0〜B1與多訊框通道格式401 的叢發訊息P2〜P3發生重疊時，微控制單元105可先控 制無線收發器101完整接收基地台301的四個叢發訊息 ® P0〜P3，接著再控制無線收發器101接收一部份基地台 302的叢發訊息B2〜B3,並且分別根據接收到的叢發訊息 P0〜P3與叢發訊息B2〜B3解碼出基地台301與基地台302 的廣播資訊。或者，當多訊框通道格式402C的叢發訊息 B0與多訊框通道格式401的叢發訊息P3發生重疊時， 微控制單元105可先控制無線收發器101完整接收基地 台301的四個叢發訊息P0〜P3，接著再控制無線收發器 101接收一部份基地台302的叢發訊息B1〜B3,並且分別 ® 根據接收到的叢發訊息P0〜P3與叢發訊息B1〜B3解碼出 基地台301與基地台302的廣播資訊。或者，當多訊框 通道格式402D的叢發訊息B3與多訊框通道格式401的 叢發訊息P0發生重疊時，微控制單元105可先控制無線 收發器101接收一部份基地台302的叢發訊息B0〜B2， 接著再控制無線收發器101完整接收基地台301的四個 叢發訊息P0〜;P3,並且分別根據接收到的叢發訊息P0~P3 與叢發訊息B0〜B2解碼出基地台301與基地台302的廣 0758-A33543TWF;MTKI-08-020 17 200948103 播資訊。或者’當多訊框通道格式402E的叢發訊息B2〜B3 與多訊框通道格式401的叢發訊息p〇〜pi發生重疊時， 微控制單元105可先控制無線收發器1〇1接收一部份基 地台302的叢發訊息B〇〜B1，接著再控制無線收發器ι〇1 完整接收基地台301的四個叢發訊息p〇〜p3，並且分別 根據接收到的叢發訊息p〇〜P3與叢發訊息B〇〜b 1解碼出 基地台301與基地台302的廣播資訊。或者，當多訊框 通道格式402F的叢發訊息B1〜B3與多訊框通道格式401 的叢發訊息ρ〇〜Ρ2發生重疊時，微控制單元105可先控 制無線收發器101接收一部份基地台3〇2的叢發訊息 Β0’接著再控制無線收發器1〇丨完整接收基地台3〇1的 四個叢發訊息ρ〇〜Ρ3，並且分別根據接收到的叢發訊息 Ρ0〜Ρ3與叢發訊息Β0解碼出基地台301與基地台302的 廣播資訊。 值得注意的是’雖然以上段落係使用呼叫通道與廣 ⑩播控制通道作為範例說明，然而本發明所提出的通道排 程方法可應用於各種待機模式下的廣播邏輯通道，例如 呼叫通道、存取允許通道以及廣播控制通道等。此外， 以上段落係使用GSM/GPRS系統作為範例說明，然而值 得注意的是本發明所提出的通道排程方法亦可應用於第 三代行動通訊的 UMTS(Universal Mobile Telecommunications System)系統，其中通道排程方法所 適用的廣播邏輯通道可以是UMTS中的主要共同控制物 理通道（primary common control physical channel)、次要 0758-A33543TWF;MTKI-08-020 18 200948103 共同控制物理通道（secondary common control physical channel)、取得指示通道（acquisition indication channel) 以及呼叫指示通道（paging indication channel)等，因此本 發明之保護範圍當視後附之申請專利範圍所界定者為 準。 第8圖係顯示根據本發明之一實施例所述之通道排 程方法流程圖。假設行動裝置預計於一第一時間區間自 第一基地台接收第一通道之第一叢發序列，並且預計於 ® 一第二時間區間自第二基地台接收第二通道之第二叢發 序列，當第二時間區間包括一第三時間區間與第一時間 區間重疊，以及一第四時間區間與第一時間區間不重疊 時，行動裝置首先於第一時間區間完整接收第一叢發序 列之第一叢發訊息（步驟S1)。接著’行動裝置於第四時 間區間接收一部分第二叢發序列之第二叢發訊息（步驟 S2)。接著，行動裝置根據接收到的第一叢發訊息取得第 一基地台之第一廣播資訊（步驟S3)。最後，行動裝置根 ® 據接收到的一部分第二叢發訊息取得第二基地台之第二 廣播資訊（步驟S4)。 本發明雖以較佳實施例揭露如上，然其並非用以限 定本發明的範圍，任何熟習此項技藝者’在不脫離本發 明之精神和範圍内，當可做些許的更動與澗飾，因此本 發明之保護範圍當視後附之申請專利範圍所界定者為 準。 0758-A33543TWF;MTKI-08-020 19 200948103 【圖式簡單說明】 第1圖係顯示一個下行鏈多訊框通道旅式實例 第2圖係顯示根據本發明之一實施例戶斤述之打動裝 置之内部電路架構。 第3圖係顯一種網路拓撲範例。 第4圖係顯示一種重疊情境範例。 第5圖係顯示在基地台端產生呼叫通道叢發序列的 流程不意圖。 © 第6圖係顯示另一種重疊情境範例。 第7圖係顯示多種不同程度叢發序列重疊的可能情 境範例。 第8圖係顯示根據本發明之一實施例所述之通道排 程方法流程圖。 【主要元件符號說明】 10、401、402、402A、402B、402C、402D、402E、 G 402F〜多訊框通道格式； 40、60、70〜重疊情境範例； 100〜行動裝置； 101〜無線收發器； 102、103、SIM 1、SIM 2〜用戶識別模組； 104〜基頻處理器； 105〜微控制單元； 10〜呼叫訊息； 220、GO、G1〜編碼資料； 0758-A33543TWF;MTKI-08-020 20 200948103 231、232、233、234、P0、PI、P2、P3、BO、B1、 B2、B3〜叢發訊息； 301、302〜基地台； 303、304〜電信網路； B、BCCH、C、F、S、PCH〜邏輯通道； ΤΙ、T2、T3、T4〜時間區間。❹ • Broadcast Control Channel (BCCH) • Frequency Correction Channel (FCCH) • Synchronization Channel (SCH) • Cell Broadcast Channel (CBCH) They are used to transmit Network general message, correct carrier frequency, adjust frame synchronization, and send SMS to users of the entire base station. In addition, the broadcast control channel contains many important network messages, such as the base station's downlink channel format, paging duration, and so on. The common control channel is mainly used to transmit messages between specific mobile devices that are in a call, including: • Random Access Channel (RACH) • Access Grant Channel (AGCH) • Call Paging Channel (PCH) • Notification Channel (NCH) In the GSM network, each user must obtain an empty time slot from the network before starting a call. Random access 0758 -A33543TWF; MTKI-〇8.〇2〇10 200948103 The channel is to let the mobile device send out the channel to apply to the base station. As to whether the application submitted by the mobile device is successful, the base station sends the confirmation response of the channel usage right back to the mobile device through the access permit channel after correctly receiving the mobile device application request. The call channel is mainly used by the base station to call the mobile device before an external call is made to a mobile device. The notification channel can be used as a delivery voice group call service to provide users with multiple other users simultaneously. Figure 1 shows an example of a downlink multi-frame channel format defined by ESTI. Multiframe 10 contains 51 time-multiplexed frames (TDMA frames). The timing of the burst sequence of each channel issued by base 2 is specified. F represents the burst sequence of the frequency correction channel, in which a fixed frequency sine wave signal is transmitted, so that the mobile device within the coverage of the base station can be corrected to use the same carrier frequency as the base station to achieve frequency synchronization. S represents the burst sequence of the synchronization channel, which records the Base Station Identity Code (BSIC) and the simplified frame number (RFN) of the base station's current time-multiplexed frame. In order to synchronize the time of the mobile device with the base station. B represents the burst sequence of the broadcast control channel, which records the radio link configuration and synchronization information of the base station. C represents a burst sequence of common control channels, wherein the random access channel, the access allowed channel, the call channel, and the burst channel of the notification channel can be used in the time-sharing multiplex frame of the common control channel according to the definition of ESTI. Transmit, so in the downlink multiframe channel format 10 as shown in Figure 1, the time division multiplexing of the common control channel is 0758-A33543TWF; MTKI-08-020 11 200948103 The frame may contain the base station Access permission information, call indication (PI) information, or voice group call indication information. It is worth noting that when the mobile device knows the frame number of the current time-multiplexed frame of the base station, it can establish timing synchronization with the base station, and establish more synchronization with the base station on the mobile device side. The frame channel format, in this way, the mobile device can receive the corresponding burst sequence at a specific time point to correctly receive the information of each time-sharing multiplex frame. 2 is a diagram showing the internal architecture of a mobile device 100 according to an embodiment of the present invention. The mobile device 100 includes a wireless transceiver 101, a first subscriber identity module (SIM 1) 102, and a second subscriber identity module. A group (SIM 2) 103, and a baseband processor 104. The wireless transceiver 101 includes a transmitting device and a receiving device (not shown) for transmitting the carrier frequency of the baseband signal to the base station of the connection, and down-converting the received high frequency signal to the baseband signal. And then transmitted to the baseband processor 104. The baseband processor 104 is configured to process the baseband signals within the mobile device 100, including signal decoding, timing control, and other digital signal processing. The baseband processor 104 further includes a Micro Control Unit (MCU) 105 for controlling the wireless transceiver 101 to receive data of a single logical channel at a fixed time, and the data belongs only to the subscriber identity modules 102 and 103. One of them all. Figure 3 shows an example of a network topology. According to an embodiment of the present invention, the user identification modules 102 and 103 share the baseband processor 104 and the wireless transceiver 101 in the mobile device. Therefore, the subscriber identity modules 102 and 103 can respectively pass through the wireless transceiver 101 to the base station 301. The base station 0758-A33543TWF; MTKI-08-020 12 200948103 302 is registered and connected, and the voice and data packets are transmitted bidirectionally through the base station 301 and the base station 302, respectively. It is worth noting that the subscriber identity modules 102 and 103 can be assigned to different telecommunications companies, as shown in FIG. In FIG. 3, the base station 301 belongs to the telecommunication network 303, and the base station 302 belongs to the telecommunication network 304. The subscriber identity module 102 of the mobile device 100 can be connected to the base station 301, and the subscriber identity module 103 can be connected. To base station 3 02. Moreover, as is well known to those skilled in the art, the subscriber identity modules 102 and 103 may also belong to the same telecommunications company, in which case the subscriber identity modules 102 and 103 may also be connected to different base stations of the same telecommunications network. Even the same base station. The above description is not intended to limit the scope of the invention, and the scope of the invention is defined by the scope of the appended claims. After the mobile device 100 is connected to the base station 301 and the base station 302 respectively, the frame number of the current time-multiplexed frame of the base station 301 and the base station 302 can be obtained through the burst sequence content broadcasted by the base station. Then, the timing control device (not shown) in the micro control unit 105 can respectively establish a multi-frame channel format synchronized with the base station 301 and the base station 302 for timing synchronization with the base station. However, since the wireless transceiver 101 can only receive data of one logical channel at a time. Therefore, in the process of channel scheduling, the micro control unit 105 can assign different priority access weights to the respective logical channels of the base station 301 and the base station 302, and compare the two logical channels corresponding to a predetermined time and overlap. Priority access weights, and control the wireless transceiver 101 to completely receive one of the two logical channels with a higher priority of priority access 0758-A33543TWF; MTKI-08-020 13 200948103 material. FIG. 4 shows an overlay scenario example 40 in which the multi-frame channel format 401 is a multi-frame channel format established within the mobile device 100 to synchronize with the base station 301, and the multi-frame channel format 402 is internal to the mobile device 100. A multi-frame channel format synchronized with the base station 302 is established. As shown, the mobile device 100 is expected to receive a burst sequence of call channels from the base station 301 via the wireless transceiver 101 during the time interval T1, and is expected to receive the broadcast control channel from the base station 302 via the wireless transceiver 101 during the time interval T2. The burst sequence, wherein the time intervals T1 and T2 include the preparation time of the wireless transceiver 101 and the software or hardware preparation time inside the baseband processor 104, and the time intervals T1 and T2 have partial time interval overlap as shown. In this scenario, since the burst sequence of the call channel may carry the information of the call indication (PI), and the burst sequence of the broadcast control channel is repeatedly transmitted periodically, the micro control unit 105 may be in the process of channel scheduling. The base station 301 is given a higher priority weight in the time interval T1, and the wireless transceiver 101 is controlled to completely receive the four burst messages P0 to P3 of the call channel in the time interval T1. When an overlap occurs, the priority given to the priority may be based on the type of channel or the time sequence according to the burst sequence in which the overlap occurs. For example, in the scenario shown in Figure 4, the micro-control unit 105 recognizes that the call channel may carry important information, thus giving the call channel a higher priority than the broadcast control channel. Alternatively, the micro control unit 105 may select a burst sequence with an earlier reception start time point according to the start time point of the burst sequence of the two channels, such as the call channel burst 0758-A33543TWF in FIG. 4; MTKI- 08-020 14 200948103 Sequence. On the other hand, the micro control unit 105 may also assign a priority weight randomly, or alternately assign a higher priority to one of the two burst sequences that overlap, or give it according to a preferred telecommunications provider set by the user. The corresponding burst sequence has a higher priority. According to an embodiment of the present invention, after the wireless transceiver 101 completely receives the four burst messages P0 P P3 of the call channel, the micro control unit 105 can further control the wireless transceiver 101 to continue receiving the bundle of the broadcast control channel in the time interval T4. Send a message B1-B3. Since in the GSM system, the data transmitted by the base station is subjected to specific channel coding and interleaving processing, the baseband processor 104 is still capable of transmitting messages B1 to B3 through a part of the broadcast control channel. Decode the broadcast information of the base station. Figure 5 is a flow chart showing the generation of a call channel burst sequence at the base station. It is assumed that the call message 210 carrying the call information has a total of 228 bits of data. The base station first performs channel coding of 1/2 coding rate, such as convolution encoding, encoding the call message 210 into encoded material 220 having 456 bits. The encoded data 220 will then be broken down to four burst messages 231, 232, 233, 234 by interleaving, for example, as shown in the figure, the consecutive encoded data GO and G1 are evenly spread across four burst messages' Therefore, each burst message includes 114-bit encoded data. Finally, the base station can transmit the burst messages 231 to 234 to the mobile device 100. Therefore, as shown in FIG. 4, when the overlap occurs, especially when the base station 301 and the base station 302 call sequence burst sequence overlap, in order not to miss the weight 0758-A33543TWF of the base station 302; MTKI-08-020 15 200948103 To call the information, the micro control unit 105 can discard a part of the bursting messages whose timings are overlapped, and control the wireless transceiver 101 to receive the remaining burst messages whose timings are not overlapped. After the remaining burst messages are collected, the baseband processor 104 can decode the broadcast information of the base station 302 using a particular decoding algorithm, such as a Viterbi decoding algorithm. Similarly, the baseband processor 104 can also decode the broadcast information of the base station 301 using the decoding algorithm. According to an embodiment of the present invention, the channel scheduling method of the present invention can be applied to situations in which the receiving timings of various logical channel burst sequences partially overlap. As shown in FIG. 4, when the time interval T4 is later than the time interval T1, the micro control unit 105 may first control the wireless transceiver 101 to completely receive the four burst messages P0 P P3 of the base station 301, and then control the wireless transceiver. 101 receives a plurality of burst messages B1 to B3 of the base station 302. Figure 6 shows another overlapping scenario example 60 in which the time interval T4 is earlier than the time interval T1, and the micro control unit 105 can first control the wireless transceiver 101 to receive a plurality of base station 302 burst messages® B0~B2, and then The wireless transceiver 101 is then controlled to completely receive the four burst messages P0-P3 of the base station 301. In addition, the channel scheduling method proposed by the present invention can also be applied to a situation in which a plurality of different levels of burst sequences overlap. Figure 7 shows a possible context example 70 in which a plurality of different burst sequences overlap, wherein the multi-frame channel formats 402A-402F are used to display overlapping scenarios of different levels of burst sequences, respectively. As shown in the figure, when the burst messages B0 to B2 of the multi-frame channel format 402A and the burst messages P1-P3 of the multi-frame channel format 401 are 0758-A33543TWF; MTKI-08-020 16 200948103 The control unit 105 can first control the wireless transceiver 101 to completely receive the four burst messages P0-P3 of the base station 301, and then control the wireless transceiver 101 to receive the burst message B3 of a portion of the base station 302, and respectively receive the The burst messages P0 to P3 and the burst message B3 decode the broadcast information of the base station 301 and the base station 302. Alternatively, when the burst messages B0 B B1 of the multi-frame channel format 402B overlap with the burst messages P2 P P3 of the multi-frame channel format 401, the micro control unit 105 may first control the wireless transceiver 101 to completely receive the base station 301. The four bursts of messages P0~P3, and then control the wireless transceiver 101 to receive a portion of the base station 302 burst messages B2~B3, and according to the received burst messages P0~P3 and the burst messages B2 ~B3 decodes the broadcast information of the base station 301 and the base station 302. Alternatively, when the burst message B0 of the multi-frame channel format 402C overlaps with the burst message P3 of the multi-frame channel format 401, the micro control unit 105 may first control the wireless transceiver 101 to completely receive the four bundles of the base station 301. Sending messages P0 to P3, and then controlling the wireless transceiver 101 to receive a plurality of burst messages B1 B B3 to B3 of the base station 302, and respectively decoding the burst messages P0 to P3 and the burst messages B1 to B3 according to the received burst messages The broadcast information of the base station 301 and the base station 302. Alternatively, when the burst message B3 of the multi-frame channel format 402D overlaps with the burst message P0 of the multi-frame channel format 401, the micro control unit 105 may first control the wireless transceiver 101 to receive a part of the base station 302. Sending messages B0 to B2, and then controlling the wireless transceiver 101 to completely receive the four burst messages P0~; P3 of the base station 301, and decoding them according to the received burst messages P0~P3 and the burst messages B0~B2, respectively. Base station 301 and base station 302 wide 0758-A33543TWF; MTKI-08-020 17 200948103 broadcast information. Or when the burst messages B2 B B3 of the multi-frame channel format 402E overlap with the burst messages p 〇 pi of the multi-frame channel format 401, the micro control unit 105 may first control the wireless transceiver 1 接收 1 to receive one. The base station 302 sends a message B〇~B1, and then controls the wireless transceiver ι〇1 to completely receive the four burst messages p〇~p3 of the base station 301, and according to the received burst message p〇 ~P3 and the burst message B〇~b 1 decode the broadcast information of the base station 301 and the base station 302. Alternatively, when the burst messages B1 B B3 of the multi-frame channel format 402F overlap with the burst messages ρ 〇 Ρ Ρ 2 of the multi-frame channel format 401, the micro control unit 105 may first control the wireless transceiver 101 to receive a part. The cluster message 基地0' of the base station 3〇2 then controls the wireless transceiver 1 to completely receive the four burst messages ρ〇~Ρ3 of the base station 3〇1, and according to the received burst messages Ρ0~Ρ3 respectively. The broadcast information of the base station 301 and the base station 302 is decoded with the burst message Β0. It is worth noting that although the above paragraphs use the call channel and the wide broadcast control channel as an example, the channel scheduling method proposed by the present invention can be applied to broadcast logical channels in various standby modes, such as call channels and access. Allow channels and broadcast control channels, etc. In addition, the above paragraphs use the GSM/GPRS system as an example, but it is worth noting that the channel scheduling method proposed by the present invention can also be applied to the UMTS (Universal Mobile Telecommunications System) system of the third generation mobile communication, in which the channel row The broadcast logical channel to which the method is applicable may be a primary common control physical channel in UMTS, a secondary 0758-A33543TWF; MTKI-08-020 18 200948103 a secondary common control physical channel. The access indication channel and the paging indication channel are obtained, and the scope of protection of the present invention is defined by the scope of the appended patent application. Figure 8 is a flow chart showing a method of channel scheduling according to an embodiment of the present invention. It is assumed that the mobile device is expected to receive the first burst sequence of the first channel from the first base station in a first time interval, and is expected to receive the second burst sequence of the second channel from the second base station in a second time interval. When the second time interval includes a third time interval that overlaps with the first time interval, and the fourth time interval does not overlap with the first time interval, the mobile device first completely receives the first burst sequence in the first time interval. The first burst message (step S1). The mobile device then receives a second burst of the second burst sequence in the fourth time interval (step S2). Next, the mobile device obtains the first broadcast information of the first base station based on the received first burst message (step S3). Finally, the mobile device root 2 obtains the second broadcast information of the second base station according to the received part of the second burst message (step S4). The present invention has been disclosed in the above preferred embodiments, and is not intended to limit the scope of the present invention, and those skilled in the art can make a few changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. 0758-A33543TWF; MTKI-08-020 19 200948103 [Simplified Schematic] FIG. 1 shows a downlink multi-frame channel brigade example. FIG. 2 shows a moving device according to an embodiment of the present invention. The internal circuit architecture. Figure 3 shows an example of a network topology. Figure 4 shows an example of an overlapping situation. Figure 5 shows the flow of the process of generating a call channel burst sequence at the base station. © Figure 6 shows another example of overlapping situations. Figure 7 shows an example of a possible scenario in which multiple bursts of different bursts are overlapped. Figure 8 is a flow chart showing a method of channel scheduling according to an embodiment of the present invention. [Major component symbol description] 10, 401, 402, 402A, 402B, 402C, 402D, 402E, G 402F ~ multi-frame channel format; 40, 60, 70 ~ overlapping situation example; 100 ~ mobile device; 101 ~ wireless transceiver 102, 103, SIM 1, SIM 2 ~ user identification module; 104 ~ base frequency processor; 105 ~ micro control unit; 10 ~ call message; 220, GO, G1 ~ coded material; 0758-A33543TWF; MTKI- 08-020 20 200948103 231, 232, 233, 234, P0, PI, P2, P3, BO, B1, B2, B3 ~ cluster messages; 301, 302 ~ base station; 303, 304 ~ telecommunications network; BCCH, C, F, S, PCH~ logical channel; ΤΙ, T2, T3, T4~ time interval.
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