九、發明說明： 【發明所屬之技術領域】 技術領域 本發明係有關於無線資料傳送之技術領域，特別是有 關於用以傳送多媒體廣播/多播服務(MBMS : Multimedia Broadcast/Multicast Service)之内容的資料傳送系統、基地 台及資料傳送方法。 【先前技術】 背景技術 近年之行動通訊系統不僅提供迴路交換型之語音服 務，也開始提供封包交換方式之大容量多媒體服務。第三 代標準化機構(3GPP)公開有關於在封包交換型系統中將 MBMS標準化，且與其相關之架構或無線通道等的結構構 (參照非專利文獻1)。 行動台、基地台及無線網路控制器（RNC : RadioIX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD The present invention relates to the technical field of wireless data transmission, and more particularly to content for transmitting Multimedia Broadcast/Multicast Service (MBMS) Data transmission system, base station and data transmission method. [Prior Art] Background In recent years, mobile communication systems have not only provided loop-switched voice services, but also began to provide high-capacity multimedia services in the form of packet switching. The Third Generation Standardization Organization (3GPP) discloses a structure in which MBMS is standardized in a packet switching type system, and a structure or a wireless channel or the like related thereto (see Non-Patent Document 1). Mobile, base station and wireless network controller (RNC : Radio
Network Controller)可構成無線存取網路（ran : Radio Access Network)。從分送MBMS内容的觀點來看，RNC亦 可稱作MBMS伺服器。MBMS伺服器係透過一些網路連接 於廣播多播服務中心(BM-SC)。 基地台或節點B(Node B)下面之行動台（UE)可接收催 促加入MBMS之MBMS通知指示元（NI : Notification Indicator)。在行動台中，從所接收之NI中選擇有興趣之服 務(例如’同時發送新聞等），然後將其旨意連絡至基地台， 實行用以加入(join)服務之程序。在此種習知系統中，每個 1333350 於1個MBMS伺服器間傳送之MBMS内容皆賦予有細胞群 組識別碼(Cell Group Id)，且群組内共有1個PDCP及RLC。 當於細胞或扇區邊界進行合成或軟.组合(Soft combining) 時，由非同步之複數細胞分送之各個MBMS内容係藉由使 5 用以 MBMS 鱗接細胞資訊（MBMS Neighboring Cell Information)指定之L1 合成時序(LI combining timing)來進 行合成。 非專利文獻1 : 3GPP介面規格，3GPP “ TS25.346 ”， “TS25.331”，網路<URL:http://www.3gpp.org> 10【發明内容】 發明揭示 發明所欲解決之問題 在第三代標準化機構(3GPP)開始討論之將來的行動通 訊系統中，作為下行方向之傳送方式之正交頻分多工 15 (OFDM : Orthogonal Frequency Division Multiplexing)方式 備受矚目。OFDM方式具有於保護間隔(GI: Guard Interval) 期間内送來之延遲波可不互相干擾地進行合成的特徵。因 此，目前也討論由複數細胞以OFDM方式同時傳送MBMS 内容，並在細胞端合成MBMS内容，來提高性能。此時， 20 分送同一内容之MBMS服務區係以1個以上之細胞網羅，細 胞邊界與MBMS之服務邊界未必相同。另外，可加入行動 台（UE)之服務存在有多數，各MBMS伺服器一般會將相異 之内容分別分送。因此，特別是在服務邊界附近時，相異 之MBMS内容之間會互相干擾，而有招致訊號品質劣化之 6 1333350 虞。 本發明係為解決前述問題點之至少⑽而作成者且其 目的在於提供在由複數基地台㈣FDM方式為基礎分送同 MBMS内谷之資料傳送系統中’至少可減輕於服 5務邊界之訊號品質劣化的資料傳送系統、資料傳送方法、 無線控制裝置、基地台及行動台。 用以解決問題之手段 本發明所使用之資料傳送系統具有無線控制裝置複 數基地台及1個以上之行動台，且可將同一個用戶共用資料 10由複數基地台以碼展頻之OFDM方式分送至〗個以上之行 動台。前述無線控制裝置具有用以記憶所接收之用戶共用 資料的機構；及用以將與連接於前述無線控制裝置之複數 基地台共用之共用擾碼通知至前述複數基地台的機構，而 前述複數基地台則分別具有可以所通知之共用擾碼對前述 15用戶共用資料進行展頻，再無線發送至1個以上之行動台的 機構；及用以將共用擾碼通知至1個以上之行動台的機構。 發明效果 根據本發明，在於提供在由複數基地台以OFDM方式 為基礎分送同一MBMS内容之資料傳送系統中，至少可減 20 -mbms於服務邊界之訊號品質劣化的資料傳送系統、資 料傳送方法、無線控制裝置、基地台及行動台。 圖式簡單說明 第1圖係顯示本發明之一實施例之資料傳送系統的圖。 第2圖係顯示本發明之一實施例之MBMS伺服器的機 7 *' S ) 1333350 能方塊圖。 第3圖係顯示本發明之一實施例之基地台的機能方塊 圖。 第4圖係顯示MBMS伺服器所進行之動作例的流程圖。 5 第5圖係顯示基地台所進行之動作例的流程圖。 第6圖係顯示本發明之一實施例之行動台的機能方塊 圖。 第7圖係顯示行動台所進行之動作例的流程圖。 第8圖係顯示本發明之一實施例iMBMS伺服器的機 10 能方塊圖。 【實施方式】 實施發明之最佳形態 根據本發明之一態樣’無線網路控制器(RNC)或MBMS 伺服器可決定其共用於其下之複數基地台的共用擾碼，而 15 共用擾碼係與準備於每一細胞之擾碼分開另外準備者。用 戶共用資料(MBMS内容)係以共用擾碼展頻，再以OFDM方 式由複數基地台發送至1個以上之行動台。因每一RNC(每 一MBMS服務)之共用擾碼相異，故細胞端之行動台可輕易 地判別自己是否位於服務邊界，還可輕易地判別是否應同 20 相合成(軟組合)從複數隣接細胞傳來之MBMS内容。 共用擾碼可準備於每一MBMS内容。如此一來，即可 合成分送相同服務之細胞所有的MBMS内容。 又，共用擾碼係藉由管理擾碼且連接於無線網路控制 器之管理伺服器、與藉由鄰接之無線網路控制器之約定、 8 (.S .) 或藉由作為台資料之外部輸入來決定者。 實施例1 <通訊系統> 第1圖係顯示本發明之一實施例之通訊系統。通訊系統 係由核心網路(CN: Core Network)、及無線存取網路(RAN: Radio Access Network)構成。CN含有路徑控制裝置(Access Router)及可控制MBMS内容之分送的控制台（BM-SC : Broadcast/Multicast-Service Center)。另一方面，RAN係由 複數無線基地台（Node B)、可控制複數Node B之無線網路 控制器（RNC)或MBMS伺服器、及透過無線介面與基地台 (Node B)進行通訊之複數行動台（UE)構成。路徑控制裝置 及與RNC之間的介面係以比表示，而!^^^與基地台之間的 介面則係以Iub表示，且RNC之間的介面係以Iur表示。又， 本實施例所假定之各介面名稱僅為一例，並不限定於此。The Network Controller can form a radio access network (ran: Radio Access Network). From the point of view of distributing MBMS content, the RNC can also be called an MBMS server. The MBMS server is connected to the Broadcast Multicast Service Center (BM-SC) via some networks. The mobile station (UE) under the base station or Node B can receive the MBMS Notification Indicator (NI: Notification Indicator) urging to join the MBMS. In the mobile station, an interested service is selected from the received NIs (for example, 'send news at the same time, etc.), and then its purpose is connected to the base station, and a program for joining the service is implemented. In this conventional system, each of the 1333350 MBMS contents transmitted between one MBMS server is given a Cell Group Id, and there is one PDCP and RLC in the group. When synthesized or soft-combined at the cell or sector boundary, each MBMS content distributed by the unsynchronized plural cells is specified by the MBMS Neighboring Cell Information. The L1 synthesis timing (LI combined timing) is used for synthesis. Non-Patent Document 1: 3GPP Interface Specification, 3GPP "TS25.346", "TS25.331", Network <URL: http://www.3gpp.org> 10 [Summary of the Invention] In the future mobile communication system that is being discussed by the 3rd Generation Standardization Organization (3GPP), the Orthogonal Frequency Division Multiplexing (OFDM) method, which is a transmission method in the downlink direction, has attracted attention. The OFDM method has a feature that delay waves transmitted during a guard interval (GI: Guard Interval) can be synthesized without interfering with each other. Therefore, it is currently discussed that multiple cells simultaneously transmit MBMS content in OFDM mode and synthesize MBMS content on the cell side to improve performance. At this time, the MBMS service area of 20 minutes for the same content is composed of more than one cell, and the cell boundary is not necessarily the same as the MBMS service boundary. In addition, there are a large number of services that can be added to the mobile station (UE), and each MBMS server generally distributes the different contents separately. Therefore, especially when the service boundary is near, the different MBMS contents will interfere with each other, and there will be 6 1333350 招 which will cause the signal quality to deteriorate. The present invention is made to solve at least the above problems (10) and aims to provide a signal that can at least reduce the boundary of the service in the data transmission system of the same base station (four) FDM method. Data transmission system, data transmission method, wireless control device, base station and mobile station with degraded quality. Means for Solving the Problem The data transmission system used in the present invention has a plurality of base stations of a wireless control device and one or more mobile stations, and can share the same user shared data 10 by a plurality of base stations by code spreading OFDM. Send to more than one mobile station. The wireless control device has a mechanism for memorizing the received user shared data; and a mechanism for notifying the plurality of base stations shared by the plurality of base stations connected to the wireless control device to the plurality of base stations, and the plurality of bases Each of the stations has a shared scrambling code that can be notified to spread the frequency of the 15 user shared data, and then wirelessly transmits to one or more mobile stations; and the mobile scrambling code is used to notify the one or more mobile stations. mechanism. Advantageous Effects of Invention According to the present invention, there is provided a data transmission system and a data transmission method capable of reducing signal quality degradation at least at a service boundary by at least 20 -mbms in a data transmission system in which a plurality of base stations distribute the same MBMS content on an OFDM basis , wireless control devices, base stations and mobile stations. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a data transfer system of an embodiment of the present invention. Figure 2 is a block diagram showing the machine 7 *' S ) 1333350 of an MBMS server according to an embodiment of the present invention. Fig. 3 is a functional block diagram showing a base station of an embodiment of the present invention. Figure 4 is a flow chart showing an example of the operation performed by the MBMS server. 5 Figure 5 is a flow chart showing an example of the operation performed by the base station. Fig. 6 is a functional block diagram showing a mobile station of an embodiment of the present invention. Fig. 7 is a flow chart showing an example of the operation performed by the mobile station. Figure 8 is a block diagram showing the power of an iMBMS server of an embodiment of the present invention. [Embodiment] Best Mode for Carrying Out the Invention According to an aspect of the present invention, a "Radio Network Controller (RNC) or an MBMS server can determine a shared scrambling code that is commonly used for a plurality of base stations thereunder, and 15 shared interference. The code system is separately prepared from the scrambling code prepared for each cell. The user shared data (MBMS content) is spread by the shared scrambling code, and is transmitted from the plurality of base stations to one or more mobile stations in the OFDM mode. Since the shared scrambling code of each RNC (per MBMS service) is different, the cell-side mobile station can easily determine whether it is at the service boundary, and can easily determine whether it should be combined with 20 (soft combination) from the complex number. MBMS content from adjacent cells. A shared scrambling code can be prepared for each MBMS content. In this way, it is possible to synthesize all MBMS content of cells that are delivered to the same service. Moreover, the shared scrambling code is used by the management server that manages the scrambling code and is connected to the radio network controller, and the agreement with the adjacent radio network controller, 8 (.S.) or by External input to decide. Embodiment 1 <Communication System> Fig. 1 is a communication system showing an embodiment of the present invention. The communication system is composed of a core network (CN: Core Network) and a radio access network (RAN: Radio Access Network). The CN includes an Access Router and a console (BM-SC: Broadcast/Multicast-Service Center) that can control the distribution of MBMS content. On the other hand, the RAN is composed of a plurality of radio base stations (Node Bs), a radio network controller (RNC) or an MBMS server that can control a plurality of Node Bs, and a plurality of communications with a base station (Node B) through a radio interface. The mobile station (UE) is composed. The interface between the path control device and the RNC is represented by a ratio, and the interface between the device and the base station is denoted by Iub, and the interface between the RNCs is denoted by Iur. Further, the names of the interfaces assumed in the present embodiment are merely examples, and are not limited thereto.
Node B與UE之間的下行無線介面係使用a〇FDM方式 發送利用展頻碼(擾碼)進行碼展頻之資料的方式❶通常係利 用稱作擾碼之展頻碼來進行細胞之識別。如後述，在本實 施形態中’和每-細胞之擾碼不同，共躲複數細胞使用 之共用擾碼係另外準備’而可用其區別服務之異同或内容 之異同。在®式例中，其中1個MBMS伺服器連接有細胞A、 B之基地台，且於細胞a、b分送相同之mbms内容。而細 胞C之基地口則係連接於另一MBMs祠服器，與細胞a、b 所刀送之内合相異的内容_般係於細胞c分送。因此，細胞 A、B與細胞C之間形成有服務邊界。 1333350 假如未使用以下説明之本實施形態的技術，則位於服 務邊界（細胞A與細胞C之間的邊界及細胞B與細胞c之間的 邊界）附近之行動台（UE)會從雙方之細胞接收到相異内 容，而使接收訊號品質嚴重地劣化。因位於細胞A與細胞B 5之間的邊界附近的行動台可從雙方之細胞接收相同内容， 故可良好地進行軟組合。這是因為，雖然UE可判斷自己是 否位於細胞端，但部無法判斷自己是否位於服務邊界的緣 故。此外，至少有關於MBMS内容之分送，使所有基地台 之發送時序互相同步。 10 <MBMS伺服器> 第2圖係顯不本發明之一實施例iMBMS伺服器的機 能方塊圖。MBMS伺服器具有控制部u、有線傳送部12、 擾碼6又疋部13、伺服器通訊部14、MBMS伺服器通訊部15、 外部輸入部16及記憶部Π。 15 控制部11可對MBMS伺服器所具備之各機能實體進行 控制，掌控MBMS伺服器裝置全體的動作。有線傳送部12 具有將擾碼設定部η決定之擾碼通知至基地台（NGde B)的 機能、與網路(NW)上之管理伺㈣㈣的機能及與瞵接之 MBMS伺服器通訊的機能。擾碼設定部13具有在MBMS内 2〇备为送時，決定連接於自身其下(MBMS伺服器其下）之Node B的擾碼的機能。該擾碼係準備於每— MBMS@服器，與準 備於每一細胞之一般擾碼有所區別。伺服器通訊部14具有 與配置於NWJi之管_服器軌的機能，而管理祠服器則 具有管理MBMS伺服器其下之N〇de b的擾碼的機能。 10 1333350 MBMS伺服器通訊部15具有透過Iur介面與隣接之以61^8伺 服器進行通訊的機能。外部輸入部16具有如台資料等人為 地由外部輸入MBMS内容分送時的擾碼的機能。記憶部口 則具有記憶RNC所使用之資訊的機能，特別是儲存自上位 5 裝置接收之MBMS内容。 雖然為方便説明，而將MBMS伺服器圖示為包含有伺 服器通訊部14、MBMS伺服器通訊部15及外部輸入部“全 部，但此於本發明並非必要，只要包含有其中至少1項機能 即可》在此種情形下，只要讓有線傳送部12具有對應伺服 10器通訊部14、MBMS伺服器通訊部15及外部輪入部16之中 安裝在MBMS伺服器者的機能即可。 準備於每一細胞之一般擾碼CCELL係和準備於每一 MBMS伺服器之擾碼CMB分開另外準備。該等擾碼可完全獨 立設定，亦可有一些關連性。 15 〈Node Β> 第3圖係顯示本發明之一實施例之基地台（N〇de Β)的 機能方塊圖。Node Β具有控制部21、無線傳送部22、有線 傳送部23、MBMS内容識別部24、及擾碼設定部25。 控制部21可對基地台（Node B)所具備之各機能實體進 20 行控制’掌控基地台(Node B)全體的動作。無線傳送部22 具有將MBMS内容分送至行動台的機能，且該MBMS内容 係以MBMS伺服器指定之擾碼展頻。本實施例可以 〇FDM-CDMA(亦稱作MC-CDMA或OFCDM)方式為例，來 傳送下行無線通道。傳送方式並不限定於此，只要以使用 11 (S ) 1333350 展頻碼（擾碼）對資料進行展頻處理之OFDM方式傳送即 可。有線傳送部23具有接收MBMS伺服器指定之擾碼的通 知的機能、及接收由MBMS伺服器分送之MBMS内容的機 能。MBMS内容識別部24具有記憶由MBMS伺服器傳送過 5 來之資料，並識別該資料是否為MBMS内容的機能。擾碼 設定部25具有設定由MBMS伺服器指定之MBMS内容分送 用擾碼的機能，以作成下行無線通道。 <MBMS伺服器之動作流程> 第4圖係顯示本發明之一實施例之MBMS伺服器的動 10 作流程之一例。該動作係於MBMS服務開始的時點進行。 MBMS伺服器可判斷MBMS内容之分送服務是否開始（步驟 S1)。該判斷可根據，例如，MBMS伺服器是否已從上位裝 置(BM-SC等）接收到MBMS内容來決定。在步驟S1中，當 No時流程結束，而當YES時流程進入步驟S2，開始MBMS 15 内容之分送服務。 步驟S2係判斷是否對配置於網路(NW)上之管理伺服 器（例如，O&A伺服器等）進行詢問。如前述，此種管理伺 服器具有管理擾碼的機能。可將MBMS伺服器設定成與管 理伺服器通訊’以決定擾碼，亦可不作此設定。為前者時， 20 步驟S2之判斷結果為YES，MBMS伺服器對管理祠服器進 行詢問’取得有關於擾碼的資訊。為後者時，步驟S2之判 斷結果為NO，流程進入步驟S3。 步驟S3係判斷是否對隣近之MBMS伺服器進行詢問。 MBMS伺服器可設定成在決定擾瑪時，於卩舞近之mbmS祠 (S ) 12 1333350 服器之間進行決定’亦可不作此設定。為前者時，步驟S3 之判斷結果為YES ’ MBMS伺服器對隣近之MBMS伺服器進 行詢問，取得有關於擾碼的資訊。例如其中—RNC可取得 另一RNC未使用之擾碼的資訊。為後者時，步驟幻之判斷 5 結果為NO，流程進入步驟S4。 步驟S4係判斷是否可將擾碼作為台資料人為地輸入。 MBMS伺服器可設定成將擾碼作為台資料由外部輸入，亦 可不作此設定。為前者時，MBMS伺服器接收外部輸入， 取得有關於擾碼的資訊。為後者時，則以一些其他的手法 10 取得有關於擾碼的資訊。（步驟S41)。 步驟S5係將以步驟S2、S3、S4或S41之各步驟取得之擾 碼資訊通知至第2圖之擾碼設定部13，且根據該資訊決定 MBMS飼服器其下所使用之擾碼。然後，將所決定之擾碼 通知至連接於MBMS伺服器其下之複數基地台（Nocie B)(步 15 驟S6)，流程結束。 雖然為方便説明，而描繪出MBMS伺服器可實行步驟 S2、S3、S4及S41之所有步驟的流程，但此非本發明所必須。 亦可於步驟S1中，在服務開始決定後，以一些方法設定相 對於該服務之擾碼。在利用步驟S2或S3時，因系統可自律 20地設定MBMS伺服器其下之擾碼，故可自動設定。在步驟 S2、S3中’設定擾碼還需要追加機能，但在步驟S4不需追 加機能。另外，當可實行步驟S2、S3、S4及S41中之2個以 上時’步驟之實行順序並不限定於圖所示者，亦可變更步 驟實行的順序。由步驟S2、S3、S4或S41或是其組合而取得The downlink wireless interface between the Node B and the UE uses a 〇FDM method to transmit data using the spreading code (scrambling code) for spreading the code. Generally, the cell identification is performed by using a spreading code called a scrambling code. . As will be described later, in the present embodiment, the 'and the per-cell scrambling code are different, and the shared scrambling code used by the plurality of cells is additionally prepared', and the similarities and differences or contents of the services can be distinguished. In the ® example, one of the MBMS servers is connected to the base stations of cells A and B, and the same mbms contents are distributed to cells a and b. The base of the cell C is connected to another MBMs server, and the contents of the cell a and b are different from each other. Therefore, a service boundary is formed between cells A, B and cell C. 1333350 If the technique of the present embodiment described below is not used, the mobile station (UE) located near the service boundary (the boundary between the cell A and the cell C and the boundary between the cell B and the cell c) will be from both cells. The received content is severely degraded by receiving the different content. Since the mobile station located near the boundary between the cell A and the cell B 5 can receive the same content from both cells, the soft combination can be performed well. This is because, although the UE can judge whether it is located at the cell end, the department cannot judge whether it is at the service boundary or not. In addition, there is at least a distribution of MBMS content, so that the transmission timings of all base stations are synchronized with each other. 10 <MBMS Server> Fig. 2 is a functional block diagram showing an iMBMS server of an embodiment of the present invention. The MBMS server includes a control unit u, a wired transmission unit 12, a scramble code 6 and a header unit 13, a server communication unit 14, an MBMS server communication unit 15, an external input unit 16, and a memory unit. The control unit 11 controls each function entity included in the MBMS server to control the operation of the entire MBMS server device. The wired transmission unit 12 has a function of notifying the scrambling code determined by the scrambling code setting unit η to the base station (NGde B), the function of the management server (4) (4) on the network (NW), and the function of communicating with the connected MBMS server. . The scrambling code setting unit 13 has a function of determining the scrambling code of the Node B connected to itself (below the MBMS server) when the MBMS is ready for transmission. The scrambling code is prepared for each MBMS@ server and is distinguished from the general scrambling code that is prepared for each cell. The server communication unit 14 has a function of being disposed on the tube of the NWJi, and the management server has a function of managing the scrambling code of the N〇de b under the MBMS server. 10 1333350 The MBMS server communication unit 15 has a function of communicating with an adjacent 61^8 servo through the Iur interface. The external input unit 16 has a function of artificially inputting a scrambling code when externally inputting MBMS contents, such as a desk material. The memory port has the function of memorizing the information used by the RNC, especially the MBMS content received from the upper 5 device. For convenience of explanation, the MBMS server is illustrated as including the server communication unit 14, the MBMS server communication unit 15, and the external input unit "all, but this is not essential to the present invention, as long as at least one of the functions is included. In this case, the wired transmission unit 12 may have a function of being installed in the MBMS server among the servo 10 communication unit 14, the MBMS server communication unit 15, and the external wheel entry unit 16. The general scrambling code CCELL of each cell is separately prepared separately from the scrambling code CMB prepared for each MBMS server. The scrambling codes can be set independently or have some correlations. 15 <Node Β> Fig. 3 A functional block diagram of a base station (N〇de Β) according to an embodiment of the present invention is shown. The Node Β has a control unit 21, a wireless transmission unit 22, a wired transmission unit 23, an MBMS content recognition unit 24, and a scrambling code setting unit 25. The control unit 21 can control the operation of the entire base station (Node B) by controlling the function entities of the base station (Node B). The wireless transmission unit 22 has the function of distributing the MBMS content to the mobile station. And within the MBMS The spreading code is spread by the scrambling code specified by the MBMS server. In this embodiment, the FDM-CDMA (also referred to as MC-CDMA or OFCDM) mode can be used as an example to transmit the downlink wireless channel. The transmission mode is not limited thereto, as long as The OFDM method for spreading the data using the spread spectrum code (scrambling code) of 11 (S) 1333350 may be used. The wired transmission unit 23 has a function of receiving a notification of the scrambling code specified by the MBMS server, and receiving the function by the MBMS server. The function of the MBMS content to be distributed. The MBMS content recognition unit 24 has a function of memorizing the data transmitted by the MBMS server and identifying whether the material is MBMS content. The scrambling code setting unit 25 has the setting specified by the MBMS server. The MBMS content distribution function of the scrambling code is used to create a downlink wireless channel. <Operation flow of MBMS server> Fig. 4 is a diagram showing an example of the flow of the MBMS server according to an embodiment of the present invention. The action is performed at the time when the MBMS service starts. The MBMS server can determine whether the MBMS content distribution service is started (step S1). The determination can be based on, for example, whether the MBMS server has been from the host device (BM-SC, etc.). Receiving the MBMS content to decide. In step S1, when No, the flow ends, and when YES, the flow proceeds to step S2, and the MBMS 15 content distribution service is started. Step S2 is to determine whether the configuration is on the network (NW). The above management server (for example, O&A server, etc.) makes an inquiry. As described above, such a management server has a function of managing scrambling codes. The MBMS server can be set to communicate with the management server to determine the scrambling code. You may not make this setting. In the former case, the result of the determination in step S2 is YES, and the MBMS server queries the management server to obtain information about the scrambling code. In the latter case, the judgment result in the step S2 is NO, and the flow advances to the step S3. Step S3 is to determine whether to inquire about the neighboring MBMS server. The MBMS server can be set to make a decision between the mbmS祠(S) 12 1333350 server when the disturbance is determined, or not. In the former case, the judgment result in the step S3 is YES. The MBMS server inquires the neighboring MBMS server to obtain information on the scrambling code. For example, the RNC can obtain information about the scrambling code that is not used by another RNC. In the latter case, the result of the step determination 5 is NO, and the flow proceeds to step S4. Step S4 is to determine whether the scrambling code can be artificially input as the station data. The MBMS server can be set to externally input the scrambling code as a table data, or not. In the former case, the MBMS server receives an external input and obtains information about the scrambling code. In the latter case, information about the scrambling code is obtained in some other way. (Step S41). In step S5, the scrambling code information obtained in each step of step S2, S3, S4 or S41 is notified to the scrambling code setting unit 13 of Fig. 2, and the scrambling code used under the MBMS feeder is determined based on the information. Then, the determined scrambling code is notified to the plurality of base stations (Nocie B) connected to the MBMS server (step S6), and the flow ends. Although the flow of all steps of steps S2, S3, S4, and S41 can be performed for the convenience of the description, it is not necessary for the present invention. In step S1, after the service start decision, the scrambling code for the service is set in some way. When step S2 or S3 is used, since the system can self-discipline 20 to set the scrambling code of the MBMS server, it can be automatically set. In step S2, S3, the setting of the scrambling code also requires an additional function, but there is no need to add function in step S4. Further, when two or more of steps S2, S3, S4, and S41 can be performed, the order of execution of the steps is not limited to those shown in the drawings, and the order of the steps may be changed. Obtained by step S2, S3, S4 or S41 or a combination thereof
13 1333350 之資訊可為有關於1個擾碼者，亦可為可使用之擾碼複數候 補。為後者時，於步驟S5決定最後應使用哪個擾碼。 <Node B之動作流程> 第5圖係顯示本發明之一實施例之基地台（Node B)的 5 動作例的流程圖。該動作例係於MBMS服務開始的時點進 行。 步驟S1係判斷該是否有與MBMS有關之擾碼由基地台 (Node B)所隸屬之MBMS伺服器通知過來。若步驟si之判斷 結果為未有擾碼由MBMS 4司服器通知過來時，則流程結 10束，若有通知則流程進入步驟S2。步驟S2係基地台（Node B) 將所指定之擾碼設定在無線發送機。以報知資訊報知行動 台（UE)該擾碼使用於MBMS内容之分送。此處雖以假定利 用報知資訊報知為例，但並不限定於此，亦可使用以mbms 服務開始時點之傳訊等通知的方法。步驟S3係判斷有無應 15傳送至UE的MBMS内容。當步驟S3之判斷結果為有應傳送 之MBMS内谷時，可使用為此所設定之擾碼來傳送灿刚 内容(步驟S4)。當步驟S3之判斷結果為無應傳送之mbms 内容時’且有應傳送之用戶資料時，可使用設定於每一細 胞之一般擾碼來傳送用戶資料(步驟S5)。要注意的是，步驟 20 S1所通知之擾碼與設定於每-細胞之__般擾碼並不相同。 第6圖係顯示本發明之—實施例之行動台_的機能 方塊圖。UE具有控制部31、無線傳送部32、報知資訊解析 部33、資料解析部34、及擾碼設定部％。 控制部31可對顶所具備之各機能實體進行控制，掌控 14 UE全體的動作。無線傳送部32具有接收於目前細胞之報知 資訊的機能、及以所指定之擾碼解展頻、接收MBMS内容 的機能。在本實施例中’下行無線通道係以利用展頻碼(擾 碼)對資料進行展頻處理之OFDM方式傳送。報知資訊解析 5 部33具有解析利用報知資訊報知之MBMS用共用擾碼的機 能。資料解析部34具有解析於資料通道上傳送之資料的機 能’舉一例來說，可藉由在與資料通道相關聯之SCCH上解 析經編碼之識別碼，來解析資料種類。擾碼設定部35具有 設定與資料通道上傳送之資料種類相應之擾碼的機能。更 10具體而言，若傳送之資料為MBMS内容’則可使用本實施 例之共用於複數細胞之「共用擾碼」，若傳送之資料非 MBMS内容，則可使用每一細胞之擾碼。 第7圖係顯示本發明之一實施例之行動台（UE)的動作 例的流程圖。 15 步驟si係判斷行動台是否已接收報知資訊。當步驟§1 判斷結果為未接收到報知資訊時，流程結束，當接收到報 知資訊時，流程進入步称S2。在步驟S2 ’ UE將所指定之擾 碼設定在無線接收機。步驟S3係UE判斷以資料通道傳送之 資料種類。當步驟S3之判斷結果為資料種類係MBMS内容 20 時，利用為此所設定之共用擾碼接收MBMS内容(步驟S4)。 當步驟S3之判斷結果為資料種類非MBMS内容，而是一般 用戶資料時，則係利用設定於每一細胞之一般擾碼來接收 用戶資料(步驟S5)。 根據本實施例，每一MBMS伺服器（每一服務區）準備有 15 1333350 共用擾碼。因此，位於細胞端之行動台（UE)可判定細跑間 共用擾碼之異同’若其相同，則因UE在同一服務區内，故 可實行軟組合。若細胞間之共用擾碼相異，則因該細胞端 有服務邊界’故UE不會實行軟組合。藉由進行此種動作， 5 UE可有效地避免於服務邊界之接收訊號不必要的合成處 理。 實施例2 雖然在第1實施例中係於每一 MBMS伺服器準備有擾 碼，但在第2實施例中則係於每一所分送之MBMSr容準備 10 有擾碼。 <mbms伺服器〉 15 第8圖係顯示本發明之一實施例2MBMS伺服器的機 能方塊圖。MBMS伺服器除和已於第2圖中説明之結構相同 之控制部11、有線傳送部、擾碼設定部U、飼服器通訊 部14、MBMS伺服器通訊部15、外部輸入部16及記憶和The information of 13 1333350 may be for one scrambler or for the scrambled multiples that can be used. In the latter case, it is determined in step S5 which scrambling code should be used last. <Operation Flow of Node B> Fig. 5 is a flowchart showing an example of the operation of the base station (Node B) according to an embodiment of the present invention. This action example is performed at the time when the MBMS service starts. Step S1 is to determine whether the scrambling code associated with the MBMS is notified by the MBMS server to which the base station (Node B) belongs. If the result of the step si is that the unscrambled code is notified by the MBMS 4 server, the flow is 10, and if there is a notification, the flow proceeds to step S2. Step S2 is a base station (Node B) that sets the designated scrambling code to the wireless transmitter. The notification information is used to notify the mobile station (UE) that the scrambling code is used for the distribution of the MBMS content. Here, the presumption of use of the notification information notification is taken as an example, but the method is not limited thereto, and a method of notifying the notification at the time of starting the mbms service may be used. Step S3 is to determine whether there is any MBMS content that should be transmitted to the UE. When the result of the decision in the step S3 is that there is an MBMS inner valley to be transmitted, the scramble code set for this purpose can be used to transmit the content (step S4). When the result of the decision in the step S3 is that there is no mbms content to be transmitted, and there is user data to be transmitted, the user data set can be transmitted using the general scrambling code set for each cell (step S5). It should be noted that the scrambling code notified in step 20 S1 is not the same as the scrambling code set in per-cell. Fig. 6 is a block diagram showing the function of the mobile station_ of the embodiment of the present invention. The UE includes a control unit 31, a radio transmission unit 32, a broadcast information analysis unit 33, a data analysis unit 34, and a scrambling code setting unit %. The control unit 31 can control each function entity provided in the top to control the operation of the entire UE. The wireless transmission unit 32 has a function of receiving the notification information of the current cell, and a function of despreading the frequency with the designated scrambling code and receiving the MBMS content. In the present embodiment, the 'downlink wireless channel' is transmitted by the OFDM method of spreading the data using the spreading code (scrambling code). The notification information analysis section 5 has a function of analyzing the shared scrambling code for the MBMS that is reported by the notification information. The data analysis unit 34 has a function of analyzing the data transmitted on the data channel. For example, the data type can be analyzed by analyzing the encoded identification code on the SCCH associated with the data channel. The scrambling code setting unit 35 has a function of setting a scrambling code corresponding to the type of data transmitted on the data channel. More specifically, if the transmitted data is MBMS content', the "common scrambling code" shared by the plurality of cells in the present embodiment can be used. If the transmitted data is not the MBMS content, the scrambling code for each cell can be used. Fig. 7 is a flow chart showing an example of the operation of a mobile station (UE) according to an embodiment of the present invention. 15 Step si is to determine whether the mobile station has received the notification information. When the result of the judgment in the step § 1 is that the notification information is not received, the flow ends, and when the notification information is received, the flow proceeds to the step S2. The UE sets the designated scrambling code to the wireless receiver in step S2'. In step S3, the UE determines the type of data transmitted by the data channel. When the result of the determination in step S3 is the data type MBMS content 20, the MBMS content is received using the shared scrambling code set for this purpose (step S4). When the result of the decision in the step S3 is the non-MBMS content of the data type, but the general user profile, the user profile is received using the general scrambling code set for each cell (step S5). According to this embodiment, each MBMS server (each service area) is prepared with a 15 1333350 shared scrambling code. Therefore, the mobile station (UE) located at the cell end can determine the similarity and difference of the shared scrambling code between the sprints. If they are the same, since the UE is in the same service area, soft combining can be performed. If the shared scrambling codes between the cells are different, the UE will not perform a soft combination because there is a service boundary at the cell end. By performing such an action, the 5 UE can effectively avoid unnecessary synthesis processing of the received signal at the service boundary. [Embodiment 2] Although the scrambling code is prepared for each MBMS server in the first embodiment, in the second embodiment, the scrambling code is prepared for each of the allocated MBMS. <mbms server> 15 Fig. 8 is a block diagram showing the function of an MBMS server according to an embodiment of the present invention. The MBMS server includes the control unit 11, the wired transmission unit, the scrambling code setting unit U, the feeder communication unit 14, the MBMS server communication unit 15, the external input unit 16, and the memory having the same configuration as that described in FIG. with
之外，還包含有MBMS内容識別部1S。在本實施例中各機 能部具有後述機能。 控制部11可對MBMS寵Μ具備之各機能實體進行 控制’掌控MBMS飼服器裝置全體的動作。有線傳送部12 ' 2。具有將擾概定和決定之擾料知至基地台(偏6 B)的 機能、與鹏_)上之管軸㈣軌的舰及與鱗接之 MBMS飼服器通訊的機能。擾瑪設定部13具有在分送 MBMS内容時，決定連接於自身其下（MBMS伺服器其下） 之Node B的擾瑪的機能。該擾竭係決定於每一臓必内In addition to the MBMS content recognition unit 1S. In the present embodiment, each functional unit has a function described later. The control unit 11 can control the function entities of the MBMS favorite to control the operation of the entire MBMS feeder device. Wire transfer unit 12'2. It has the function of knowing the disturbance and determining the disturbance to the base station (6 B), the ship with the pipe shaft (4) on the Peng_), and the communication function with the MBMS feeder. The scrambling setting unit 13 has a function of determining the scramble of the Node B connected to itself (below the MBMS server) when the MBMS content is distributed. The disturbance is determined by each
16 1333350 容。伺服器通訊部14具有與配置NW上之管理伺服器通訊的 機能’管理伺服器則具有管理MBMS飼服器其下之Node B 的擾碼的機能。MBMS伺服器通訊部15具有透過lur介面與 隣接之MBMS伺服器進行通訊的機能。外部輸入部16具有 5如台資料等人為地由外部輸入MBMS内容分送時的擾碼的 機能。記憶部17具有記憶MBMS伺服器所使用之資訊的機 能’特別是儲存自上位裝置接收之MBMS内容。MBMS内 容識別部18則具有識別該MBMS伺服器其下之UE所加入之 MBMS内容的機能。即’ MBMS伺服器可掌握哪個UE加入 10哪個服務’而哪個服務含有哪個内容。換言之，MBMS伺 服器可掌握每一UE所加入之服務、及每一服務所含有之内 〈Node B> 本實施例所使用之基地台（Node B)具有和第1實施例 15所使用之基地台（第3圖）相同的機能，但擾碼之設定方法主 要上相異。Node B具有如第3圖所示之控制部21、無線傳送 部22、有線傳送部23、MBMS内容識別部24及擾碼設定部 25。在本實施例中，各機能部具有後述機能。 控制部21可對Node B所具備之各機能實體進行控制， 2〇 掌控Node B全體的動作。無線傳送部22具有將MBMS内容 分送行動台的機能，且該MBMS内容係以由MBMS伺服器 指定之擾碼展頻。本實施例也是以利用展頻碼(擾碼)對資料 進行展頻處理之OFDM方式傳送下行通道。有線傳送部23 具有接收MBMS伺服器所指定之擾碼的通知的機能、及接 r： S > 17 1333350 收由MBMS伺服器分送之MBMS内容的機能。MBMS内容識 別部24具有記憶由MBMS伺服器傳送過來之資料，然後識 別其是否為MBMS内容的機能。擾碼設定部25將由MBMS 伺服器指定之MBMS内容分送用擾碼設定在每一 MBMS内 5 容，以作成下行無線通道的機能。 根據本實施例，可於每一内容設定擾碼。如前述，通 常若MBMS伺服器相異，則由其分送之内容也會相異。因 此，UE可利用該擾碼來區別内容之異同，而可避免於服務 邊界之接收訊號不必要的合成處理。該點與第1實施例同。 10 但是，在本實施例中，係於每一内容準備擾碼，而不是於 每一MBMS伺服器。因此，就算UE位於服務邊界，當雙方 之服務區(MBMS伺服器）碰巧分送同一内容時，可清楚了解 其擾碼為同一個，而可適切地合成雙方之分送内容，因此 可將其軟組合。即，根據本實施例，行動台可合成由分送 15 同一内容之所有細胞傳來之訊號。 此外，本發明並不限於前述實施例，可在申請專利範 圍内中作各種變更及應用。 本國際申請案係根據2005年9月14日所申請之日本專 利申請案第2005-267671號主張優先權者，並將其全内容引 20 用至本國際申請案中。 【圖式簡單說明】 第1圖係顯示本發明之一實施例之資料傳送系統的圖》 第2圖係顯示本發明之一實施例之MBMS伺服器的機 能方塊圖。 18 (5 ) 1333350 第3圖係顯示本發明之一實施例之基地台的機能方塊 圖。 第4圖係顯示MBMS伺服器所進行之動作例的流程圖。 第5圖係顯示基地台所進行之動作例的流程圖。 5 第6圖係顯示本發明之一實施例之行動台的機能方塊 圖。 第7圖係顯示行動台所進行之動作例的流程圖。 第8圖係顯示本發明之一實施例之MBMS伺服器的機 能方塊圖。 10【主要元件符號說明】 UE…行動台 17…記憶部 Node B…基地台 18...MBMS内容識別部 RNC...無線網路控制器 21...控制部 RAN…無線存取網路 22…無線傳送部 CN…核心網路 23…有線傳送部 Iu...介面 24…MBMS内容識別部 Iub...介面 25…擾碼設定部 Iur...介面 31...控制部 11…控制部 32…無線傳送部 Π…有線傳送部 33…報知資购析部 13…擾瑪設定部 34…資料解析部 14…伺服^器通訊部 35…擾碼設定部 15…MBMS伺服器通訊部 16…外部輸入部 1916 1333350 Rong. The server communication unit 14 has a function of communicating with the management server on the configuration NW. The management server has a function of managing the scrambling code of the Node B under the MBMS feeder. The MBMS server communication unit 15 has a function of communicating with an adjacent MBMS server through the lur interface. The external input unit 16 has a function of manually scrambling codes when externally inputting MBMS contents, such as desk data. The memory unit 17 has a function of memorizing the information used by the MBMS server, in particular, the MBMS content received from the host device. The MBMS content identification unit 18 has a function of identifying the MBMS content to which the UE under the MBMS server is joined. That is, the 'MBMS server can grasp which UE joins 10 services' and which service contains which content. In other words, the MBMS server can grasp the service that each UE joins, and the base station (Node B) used in this embodiment has the base used in the first embodiment 15 The station (Fig. 3) has the same function, but the setting method of the scrambling code is mainly different. The Node B has a control unit 21, a wireless transmission unit 22, a wired transmission unit 23, an MBMS content recognition unit 24, and a scrambling code setting unit 25 as shown in Fig. 3. In the present embodiment, each functional portion has a function described later. The control unit 21 can control each function entity included in the Node B, and control the operation of the entire Node B. The wireless transmission unit 22 has a function of distributing the MBMS content to the mobile station, and the MBMS content is spread by the scrambling code specified by the MBMS server. In this embodiment, the downlink channel is also transmitted in an OFDM manner in which the spread spectrum code (scrambling code) is used for spreading the data. The cable transfer unit 23 has a function of receiving a notification of the scrambling code designated by the MBMS server, and a function of receiving the MBMS content distributed by the MBMS server. The MBMS content identification unit 24 has a function of memorizing the data transmitted by the MBMS server and then identifying whether it is MBMS content. The scrambling code setting unit 25 sets the MBMS content distribution scrambling code designated by the MBMS server in each MBMS to create a function of the downlink radio channel. According to this embodiment, the scrambling code can be set for each content. As mentioned above, if the MBMS servers are different, the content distributed by them will be different. Therefore, the UE can use the scrambling code to distinguish the similarities and differences of the content, and can avoid unnecessary synthesis processing of the received signals at the service boundary. This point is the same as in the first embodiment. 10 However, in this embodiment, the scrambling code is prepared for each content, not for each MBMS server. Therefore, even if the UE is located at the service boundary, when the service area (MBMS server) of both parties happens to distribute the same content, it can clearly understand that the scrambling code is the same, and can appropriately synthesize the distribution contents of both parties, so it can be Soft combination. That is, according to the present embodiment, the mobile station can synthesize signals transmitted from all cells of the same content. Further, the present invention is not limited to the foregoing embodiments, and various changes and applications can be made within the scope of the patent application. This international application is based on Japanese Patent Application No. 2005-267671, filed on Sep. 14, 2005, and the entire content of which is incorporated herein by reference. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing a data transmission system of an embodiment of the present invention. Fig. 2 is a functional block diagram showing an MBMS server according to an embodiment of the present invention. 18 (5) 1333350 Fig. 3 is a functional block diagram showing a base station of an embodiment of the present invention. Figure 4 is a flow chart showing an example of the operation performed by the MBMS server. Fig. 5 is a flow chart showing an example of the operation performed by the base station. 5 Fig. 6 is a functional block diagram showing a mobile station according to an embodiment of the present invention. Fig. 7 is a flow chart showing an example of the operation performed by the mobile station. Figure 8 is a block diagram showing the function of an MBMS server in accordance with an embodiment of the present invention. 10 [Description of main component symbols] UE...Mobile station 17...Memory unit Node B...Base station 18...MBMS content identification unit RNC...Wireless network controller 21...Control unit RAN...Wireless access network 22...wireless transmission unit CN...core network 23...wired transmission unit Iu...interface 24...MBMS content identification unit Iub...interface 25...scrambling code setting unit Iur...interface 31...control unit 11... Control unit 32: wireless transmission unit 有线 cable transmission unit 33... notification acquisition unit 13... scrambling unit setting unit 34... data analysis unit 14... servo unit communication unit 35... scrambling code setting unit 15... MBMS server communication unit 16... external input unit 19