TWI383608B - Radio communication system, base station apparatus, terminal apparatus, and radio communication method in radio communication system - Google Patents
Radio communication system, base station apparatus, terminal apparatus, and radio communication method in radio communication system Download PDFInfo
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Description
本發明係有關於無線通訊系統、基地台裝置、終端裝置及無線通訊系統之無線通訊方法。The present invention relates to a wireless communication method for a wireless communication system, a base station device, a terminal device, and a wireless communication system.
LTE-A(LTE-Advanced)系統中，檢討了CoMP(Coordint ae MultiPoint access)之無線通訊(例如以下之非專利文獻1、2)。In the LTE-A (LTE-Advanced) system, wireless communication of CoMP (Coordint ae MultiPoint access) is reviewed (for example, Non-Patent Documents 1 and 2 below).
CoMP係藉終端機位於可與複數基地台(或扇區)通訊之區域時，各基地台使用MIMO(Multiple Input Multiple Output)，將不同之資料發送至終端機而執行。另一方面，在LTE等無線通訊系統，基地台對發送資料進行擾亂處理(例如以下之非專利文獻3、4)。舉例言之，基地台將發送資料b(0),...,b(Mbit -1)與擾碼c(i)相加，運算「2」之餘數(Modulo)，而執行擾亂。即，When the CoMP is located in an area that can communicate with a plurality of base stations (or sectors), each base station uses MIMO (Multiple Input Multiple Output) to transmit different data to the terminal. On the other hand, in a wireless communication system such as LTE, the base station performs a disturbance process on the transmission data (for example, Non-Patent Documents 3 and 4 below). For example, the base station adds the transmitted data b(0),...,b(M bit -1) and the scrambling code c(i), and calculates the remainder of the "2" (Modulo) to perform the scrambling. which is,
在此，擾碼c(i)為長度「31」之金氏碼，以以下之生成多項式求出。Here, the scrambling code c(i) is a Kelvin code of length "31", and is obtained by the following generator polynomial.
[數2][Number 2]
c (n )=(x 1 (n + N C )+x 2 (n +N C ))mod2 c ( n )=( x 1 ( n + N C )+ x 2 ( n + N C )) mod2
[數3][Number 3]
x 1 (n +31)=(x 1 (n +3)+x 1 (n ))mod2 x 1 ( n +31)=( x 1 ( n +3)+ x 1 ( n )) mod2
[數4][Number 4]
x 2 (n +31)=(x 2 (n +3)+x 2 (n +2)+x 2 (n +1)+x 2 (n ))mod2 x 2 ( n +31)=( x 2 ( n +3)+ x 2 ( n +2)+ x 2 ( n +1)+ x 2 ( n )) mod2
在此，here,
[數5][Number 5]
x 1 (0)=1,x 1 (n )=0,n =1,2,...,30,N C =1600 x 1 (0)=1, x 1 ( n )=0, n =1,2,...,30, N C =1600
進一步，擾碼c(i)之初始值以以下賦與。Further, the initial value of the scrambling code c(i) is assigned as follows.
即，擾碼c(i)之初始值以終端機號碼That is, the initial value of the scrambling code c(i) is the terminal number
[數7][Number 7]
n RNTI (RNTI :Radio Network Temporally ID ) n RNTI ( RNTI : Radio Network Temporally ID )
、(實體)細胞(或扇區)號碼(physical) cell (or sector) number
、及槽號碼And slot number
[數9][Number 9]
nn ss
決定之值。The value of the decision.
此外，此種習知技術揭示一種控制裝置，該控制裝置具有依從行動台通知之接收品質，選擇至少2個對行動台發送之發送扇區，對行動台進行發送分配之發送分配機構及使用從發送扇區供扇區識別用之相同擾碼，對行動台發送之發送機構(例如以下之專利文獻1)。Furthermore, such prior art discloses a control device having a transmission allocation mechanism that selects at least two transmission sectors transmitted to the mobile station in accordance with the reception quality of the mobile station notification, and transmits and distributes the mobile station to the mobile station. A transmission mechanism that transmits a sector to the same scrambling code for sector identification and transmits it to the mobile station (for example, Patent Document 1 below).
又，揭示一種基地台裝置，該基地台裝置具有生成基地台固有擾碼之基地台固有擾亂生成部、生成扇區固有之正交序列之固有正交序列生成部、依各實體通道之軟體合成與否，控制前述基地台固有擾碼與前述扇區固有正交序列之相乘與否之乘法控制部(例如以下之專利文獻2)Further, a base station apparatus having a base station-specific scrambling generating unit that generates a base station-specific scrambling code, an intrinsic orthogonal sequence generating unit that generates an orthogonal sequence unique to a sector, and a soft-synthesis according to each physical channel are disclosed. Whether or not the multiplication control unit that controls whether the base station unique scrambling code is multiplied by the sector-specific orthogonal sequence (for example, Patent Document 2 below)
專利文獻1：日本專利公開公報2006-311475號Patent Document 1: Japanese Patent Laid-Open Publication No. 2006-311475
專利文獻2：日本專利公開公報2008-92379號Patent Document 2: Japanese Patent Laid-Open Publication No. 2008-92379
非專利文獻1：R1-084203Non-Patent Document 1: R1-084203
非專利文獻2：3GPP TS 36.210 V8.6.0Non-Patent Document 2: 3GPP TS 36.210 V8.6.0
非專利文獻3：3GPP TS 36.211 V8.2.0Non-Patent Document 3: 3GPP TS 36.211 V8.2.0
非專利文獻4：R1-081229Non-Patent Document 4: R1-081229
如上述，擾碼之初始值由終端機號碼、細胞號碼及槽號碼決定，終端機號碼就各細胞根據基地台設定，細胞號碼亦依各細胞而不同。又，槽號碼亦有在細胞間不同之號碼之情形。因而，從不同之細胞對終端機進行CoMP發送時，擾碼之初始值依各細胞而為不同之值。是故，各基地台與終端機作成不同之擾碼，使用此，進行擾亂及解擾亂之處理。因而，各基地台及終端機之處理複雜，耗費電力亦增大。As described above, the initial value of the scrambling code is determined by the terminal number, the cell number, and the slot number, and the terminal number is set for each cell according to the base station, and the cell number is also different for each cell. Also, the slot number also has a number different between cells. Therefore, when CoMP transmission is performed on a terminal from a different cell, the initial value of the scrambling code is different depending on each cell. Therefore, each base station and the terminal machine create different scrambling codes, and use this to perform the processing of disturbance and descrambling. Therefore, the processing of each base station and terminal is complicated, and the power consumption is also increased.
又，記載於專利文獻1及2者未揭示從2個扇區發送不同之資料之情形。這是由於如專利文獻1所記載，使用相同之擾碼，從2個扇區發送不同之資料時，行動台接收2個信號，但該等2個信號干擾，而無法識別從2個扇區發送之資料之故。Further, the patent documents 1 and 2 do not disclose the case where different data is transmitted from two sectors. This is because, as described in Patent Document 1, when the same scrambling code is used to transmit different data from two sectors, the mobile station receives two signals, but the two signals interfere with each other and cannot recognize the two sectors. The reason for the information sent.
是故，本發明之一目的在於提供在終端裝置或基地台裝置謀求處理之減輕之無線通訊系統、基地台裝置、終端裝置及無線通訊系統之無線通訊方法。Accordingly, it is an object of the present invention to provide a wireless communication method for a wireless communication system, a base station device, a terminal device, and a wireless communication system for reducing the processing of a terminal device or a base station device.
又，本發明另一目的在於提供在終端裝置或基地台裝置謀求耗費電力之刪減之無線通訊系統等。Further, another object of the present invention is to provide a wireless communication system or the like that seeks to reduce power consumption in a terminal device or a base station device.
根據一態樣，在各具有1個或複數個細胞或扇區之第1及第2基地台裝置與終端裝置間進行無線通訊之無線通訊系統中，前述第1及第2基地台裝置具有處理部及發送部，該處理部係於將依前述細胞或前述扇區而各自不同之第1及第2發送資料分別發送至前述終端裝置時，使用共通之擾碼，分別將前述第1及第2發送資料進行擾亂處理者；該發送部係將業經前述擾亂處理之前述第1及第2發送資料分別發送至前述終端裝置者；又，前述終端裝置具有接收部，該接收部係接收前述第1及第2發送資料，並使用前述共通之擾碼，將前述第1及第2發送資料進行解擾亂處理者。According to one aspect, in the wireless communication system in which the first and second base station apparatuses each having one or a plurality of cells or sectors perform wireless communication, the first and second base station apparatuses have processing And a transmitting unit that transmits the first and second transmission data different from each other by the cell or the sector to the terminal device, and uses the common scrambling code to respectively perform the first and the first (2) transmitting the data to the disturbance processor; the transmitting unit transmits the first and second transmission data that have been subjected to the disturbance processing to the terminal device; and the terminal device includes a receiving unit, and the receiving unit receives the 1 and the second transmission data, and the first and second transmission data are descrambled by using the common scrambling code.
又，根據另一態樣，在各具有1個或複數個細胞或扇區之第1及第2基地台裝置與終端裝置間進行無線通訊之無線通訊系統中，前述終端裝置具有處理部及發送部：該處理部係對依前述細胞或前述扇區而各自不同之第1及第2發送資料使用共通之擾碼，進行擾亂處理者；該發送部係將業經前述擾亂處理之前述第1及第2發送資料分別發送至前述第1及第2基地台裝置者；前述第1及第2基地台裝置具有接收部，該接收部係接收前述第1及第2發送資料，並使用前述共通之擾碼，對前述第1及第2發送資料進行解擾亂處理者。Further, according to another aspect, in the wireless communication system in which the first and second base station apparatuses each having one or a plurality of cells or sectors perform wireless communication with each other, the terminal apparatus includes a processing unit and a transmission. The processing unit performs a scrambling process on the first and second transmission data different from each other according to the cell or the sector, and the transmission unit performs the first and the first processing of the disturbance processing. The second transmission data is transmitted to the first and second base station apparatuses, respectively, and the first and second base station apparatuses have a receiving unit that receives the first and second transmission materials and uses the common The scrambling code is used to de-scramble the first and second transmitted data.
本發明係可提供在終端裝置或基地台裝置謀求處理之減輕之無線通訊系統、基地台裝置、終端裝置及無線通訊系統之無線通訊方法。可提供在終端裝置或基地台裝置謀求耗費電力之刪減之無線通訊系統等。The present invention can provide a wireless communication method for a wireless communication system, a base station device, a terminal device, and a wireless communication system that are reduced in processing by a terminal device or a base station device. It is possible to provide a wireless communication system or the like that seeks to reduce power consumption in a terminal device or a base station device.
第1圖係顯示無線通訊系統之結構例的圖。Fig. 1 is a view showing a configuration example of a wireless communication system.
第2圖係顯示下行方向之無線通訊系統之結構例的圖。Fig. 2 is a view showing a configuration example of a wireless communication system in the downstream direction.
第3圖係顯示主基地台裝置之結構例的圖。Fig. 3 is a view showing a configuration example of a main base station device.
第4圖係顯示從基地裝置之結構例的圖。Fig. 4 is a view showing a configuration example of a slave base device.
第5圖係顯示終端裝置之結構例的圖。Fig. 5 is a view showing a configuration example of a terminal device.
第6圖係顯示擾碼作成部之結構例的圖。Fig. 6 is a view showing a configuration example of a scrambling code creation unit.
第7圖係顯示動作例之流程圖。Fig. 7 is a flow chart showing an example of the operation.
第8圖係顯示動作例之流程圖。Fig. 8 is a flow chart showing an example of the operation.
第9圖係顯示上行方向之無線通訊系統之結構例的圖。Fig. 9 is a view showing an example of the configuration of a wireless communication system in the uplink direction.
第10圖係顯示主基地台裝置之結構例的圖。Fig. 10 is a view showing a configuration example of a main base station device.
第11圖係顯示從基地台裝置之結構例的圖。Fig. 11 is a view showing an example of the configuration of the slave base station apparatus.
第12圖係顯示終端裝置之結構例的圖。Fig. 12 is a view showing a configuration example of a terminal device.
第13圖係顯示動作例之流程圖。Figure 13 is a flow chart showing an example of the operation.
第14圖係顯示動作例之流程圖。Fig. 14 is a flow chart showing an example of the operation.
第15圖係顯示終端裝置之結構例的圖。Fig. 15 is a view showing a configuration example of a terminal device.
第16圖係顯示終端裝置之結構例的圖。Fig. 16 is a view showing a configuration example of a terminal device.
第17圖係顯示基地台裝置之結構例的圖。Fig. 17 is a view showing a configuration example of a base station device.
以下就用以實施本發明之形態作說明。第1圖係顯示無線通訊系統10之結構例者。無線通訊系統10具有2個基地台裝置(eNB：evolved Node_B，以下稱為「基地台」)100-1、100-2、終端裝置(UE：User Equipment，以下稱為「終端機」)200。基地台100-1、100-2發送不同之資料，終端機200接收此資料(下行方向)。又，終端機200亦可將不同之資料發送至基地台100-1、100-2(上行方向)。基地台100-1、100-2及終端機200皆可進行所謂CoMP通訊。以下，分為下行方向(第1實施例)及上行方向(第2實施例)來說明。此外，在3GPP，「細胞」以與所謂「扇區」相同之內容定義，在以下之實施例中只要未特別限制，便以「細胞」=「扇區」來說明。The mode for carrying out the invention will be described below. Fig. 1 shows a structural example of the wireless communication system 10. The wireless communication system 10 includes two base station apparatuses (eNB: evolved Node_B, hereinafter referred to as "base station") 100-1 and 100-2, and a terminal apparatus (UE: User Equipment, hereinafter referred to as "terminal set") 200. The base stations 100-1, 100-2 transmit different data, and the terminal 200 receives the data (downstream direction). Further, the terminal 200 can also transmit different data to the base stations 100-1 and 100-2 (upstream direction). Both the base stations 100-1, 100-2 and the terminal 200 can perform so-called CoMP communication. Hereinafter, the description will be made in the downlink direction (first embodiment) and the uplink direction (second embodiment). In addition, in 3GPP, "cell" is defined by the same content as the "sector", and in the following embodiments, "cell" = "sector" is used unless otherwise specified.
首先，就下行方向來說明。第2圖係顯示下行方向之無線通訊系統10之結構例的圖。在2個基地台100-1、100-2中，基地台100-1為主基地台，基地台100-2為從基地台。主基地台100-1係於執行CoMP發送前，與終端機200連接中之基地台，從基地台100-2係執行CoMP發送之基地台。主基地台100-1將控制信號發送至終端機200。終端機200依控制信號，接收從主基地台100-1及從基地台100-2發送之不同之發送資料(DSCH)。First, let's explain the down direction. Fig. 2 is a view showing a configuration example of the wireless communication system 10 in the downstream direction. Among the two base stations 100-1 and 100-2, the base station 100-1 is the master base station, and the base station 100-2 is the slave base station. The primary base station 100-1 is a base station that is connected to the terminal 200 before performing CoMP transmission, and base station that performs CoMP transmission from the base station 100-2. The primary base station 100-1 transmits a control signal to the terminal 200. The terminal 200 receives different transmission data (DSCH) transmitted from the primary base station 100-1 and the base station 100-2 in accordance with the control signal.
就第1實施例之主基地台100-1之結構例作說明。第3圖係顯示主基地台100-1的圖。A description will be given of a configuration example of the main base station 100-1 of the first embodiment. Fig. 3 is a view showing the main base station 100-1.
主基地台100-1具有天線101、接收無線部102、解調解碼部103、連接要求信號抽出部104、無線線路控制部105、細胞資訊信號作成部106、CoMP通訊要求信號抽出部107、CoMP通訊執行判定及控制部(以下稱為「控制部」)108、無線線路品質資訊抽出部109、排程器110、控制信號作成部111、擾碼作成部112、發送資料緩衝器113、編碼調變部114、發送無線部115。The main base station 100-1 includes an antenna 101, a reception radio unit 102, a demodulation decoding unit 103, a connection request signal extracting unit 104, a radio channel control unit 105, a cell information signal generating unit 106, a CoMP communication request signal extracting unit 107, and a CoMP. Communication execution determination and control unit (hereinafter referred to as "control unit") 108, radio channel quality information extracting unit 109, scheduler 110, control signal generating unit 111, scrambling code generating unit 112, transmission data buffer 113, and coding adjustment The variable unit 114 and the transmission wireless unit 115.
天線101在與終端機200間發送接收無線信號。The antenna 101 transmits and receives a wireless signal between the terminal and the terminal 200.
接收無線部102將以天線101所接收之無線信號作為接收信號而輸出。The reception radio unit 102 outputs a radio signal received by the antenna 101 as a reception signal.
解調解碼部103將從接收無線部102輸出之接收信號進行解調及解碼。The demodulation and decoding unit 103 demodulates and decodes the received signal output from the reception radio unit 102.
連接要求信號抽出部104從業經解調等之接收信號抽出連接要求信號。連接要求信號係於終端機200在與主基地台100-1間進行線路連接之要求時使用之信號。The connection request signal extracting unit 104 extracts the connection request signal from the received signal such as demodulation. The connection request signal is a signal used when the terminal 200 is required to make a line connection with the primary base station 100-1.
無線線路控制部105從連接要求信號抽出部104輸入連接要求信號時，選擇例如保持在內部之複數細胞號碼與終端機號碼中任一細胞號碼及終端機號碼，輸出至細胞資訊信號作成部106及擾碼作成部112。When the connection request signal is input from the connection request signal extracting unit 104, the wireless line control unit 105 selects, for example, any cell number and terminal number of the plurality of cell numbers and terminal numbers held therein, and outputs the result to the cell information signal generating unit 106 and The scrambling code creation unit 112.
細胞資訊信號作成部106由從無線線路控制部105輸出之細胞號碼與終端機號碼及從排程器110輸出之槽號碼作成細胞資訊。所作成之細胞資訊作為細胞資訊信號而發送至執行CoMP發送之基地台(例如從基地台100-2)。又，細胞資訊信號為發送至終端機200，而亦輸出至編碼調變部114。The cell information signal creation unit 106 creates cell information from the cell number and the terminal number output from the radio channel control unit 105 and the slot number output from the scheduler 110. The made cell information is sent as a cell information signal to a base station (e.g., from base station 100-2) that performs CoMP transmission. Further, the cell information signal is transmitted to the terminal device 200, and is also output to the code modulation unit 114.
CoMP通訊要求信號抽出部107在從解碼調變部103輸出之接收信號中抽出CoMP通訊要求信號。CoMP通訊要求信號係例如，終端機200要進行CoMP通訊時，從終端機200發送之信號。The CoMP communication request signal extracting unit 107 extracts the CoMP communication request signal from the received signal output from the decoding and transforming unit 103. The CoMP communication request signal is, for example, a signal transmitted from the terminal 200 when the terminal 200 is to perform CoMP communication.
控制部108判定是否執行CoMP發送，判定為執行CoMP發送時，將CoMP發送執行通知通知從基地台100-2。控制部108依例如，從無線線路品質資訊抽出部109輸出之無線線路品質與從從基地台100-2發送之無線線路品質，判定是否執行CoMP發送。CoMP發送執行通知亦輸出至排程器110及細胞資訊信號作成部106。CoMP發送之執行判定之詳細內容後述。The control unit 108 determines whether or not to perform CoMP transmission, and determines that the CoMP transmission execution notification is notified from the base station 100-2 when CoMP transmission is performed. The control unit 108 determines whether or not to perform CoMP transmission, for example, based on the radio channel quality output from the radio channel quality information extracting unit 109 and the radio channel quality transmitted from the base station 100-2. The CoMP transmission execution notification is also output to the scheduler 110 and the cell information signal generation unit 106. The details of the execution determination of the CoMP transmission will be described later.
無線線路品質資訊抽出部109在從解調解碼部103輸出之接收信號中抽出無線線路品質資訊。無線線路品質資訊係從例如終端機200發送之資訊。The wireless channel quality information extracting unit 109 extracts the wireless channel quality information from the received signal output from the demodulation decoding unit 103. The wireless line quality information is information transmitted from, for example, the terminal 200.
排程器110依從無線線路品質資訊抽出部109所輸出之無線線路品質資訊，決定在與終端機200之下行方向之通訊使用之編碼率、調變方式等(進行排程)。排程器110將有關於所決定之編碼率之排程資訊輸出至控制信號作成部111。又，排程器110將排程資訊中之使用頻率與預編碼資訊作為CoMP控制信號，發送至從基地台100-2，將槽號碼輸出至細胞資訊信號作成部106與擾碼作成部112。此外，排程器110根據所決定之排程資訊，控制編碼調變部114及發送無線部115，以進行對發送資料之編碼處理等。The scheduler 110 determines the coding rate, the modulation method, and the like (scheduled) used for communication with the terminal 200 in the downstream direction in accordance with the wireless channel quality information output from the wireless channel quality information extracting unit 109. The scheduler 110 outputs schedule information on the determined coding rate to the control signal creation unit 111. Further, the scheduler 110 transmits the use frequency and the precoding information in the schedule information as a CoMP control signal to the slave base station 100-2, and outputs the slot number to the cell information signal creation unit 106 and the scrambling code creation unit 112. Further, the scheduler 110 controls the code modulation unit 114 and the transmission wireless unit 115 based on the determined schedule information to perform encoding processing of the transmission data and the like.
控制信號作成部111作成包含從排程器110輸出之排程資訊之控制信號，將之輸出至編碼調變部114。The control signal creation unit 111 creates a control signal including the schedule information output from the scheduler 110, and outputs it to the code modulation unit 114.
擾碼作成部112依從排程器110所輸出之槽號碼、從無線線路控制部105所輸出之細胞號碼及終端機號碼，作成擾碼之初始值，依序作成擾碼。擾碼作成部112之詳細內容後述。The scrambling code creation unit 112 creates an initial value of the scrambling code in accordance with the slot number output from the scheduler 110, the cell number output from the radio channel control unit 105, and the terminal number, and sequentially creates a scrambling code. The details of the scrambling code creation unit 112 will be described later.
發送資料緩衝器113暫時記憶從主基地台100-1發送至終端機200之發送資料。The transmission data buffer 113 temporarily memorizes the transmission data transmitted from the primary base station 100-1 to the terminal 200.
編碼調變部114使用以擾碼作成部112所作成之擾碼，並將從發送資料緩衝器113輸出之發送資料擾亂，依排程資訊將擾亂後之發送資料編碼及調變。此外，編碼調變部114對從細胞資訊信號作成部106輸出之細胞資訊與從控制信號作成部111輸出之控制信號進行編碼等處理，亦可對該等進行擾亂處理。The code modulation unit 114 uses the scrambling code created by the scrambling code creation unit 112, and scrambles the transmission data outputted from the transmission data buffer 113, and encodes and modulates the transmitted data after the disturbance according to the scheduling information. Further, the code modulation unit 114 performs processing such as encoding the cell information output from the cell information signal generating unit 106 and the control signal output from the control signal generating unit 111, and may perform the scrambling process.
發送無線部115對從編碼調變部114所輸出之發送資料等依以排程器110作成之預編碼資訊，進行發送資料等之加權之處理(或weight處理)等。又，發送無線部115生成引示信號(或已知信號)。將來自發送無線部115之輸出作為無線信號，藉由天線101，發送至終端機200。The transmission radio unit 115 performs processing (or weight processing) of weighting the transmission data or the like on the transmission data output from the code modulation unit 114 in accordance with the precoding information created by the scheduler 110. Further, the transmission radio unit 115 generates a pilot signal (or a known signal). The output from the transmission radio unit 115 is transmitted as a radio signal to the terminal 200 via the antenna 101.
接著，就第1實施例之從基地台100-2之結構例作說明。從基地台100-2為與主基地台100-1相同之結構。Next, a configuration example of the slave base station 100-2 of the first embodiment will be described. The base station 100-2 has the same structure as the main base station 100-1.
控制部108從CoMP通訊要求信號抽出部107輸入CoMP通訊要求，進一步，從主基地台100-1接收CoMP執行通知時，將CoMP執行通知輸出至排程器110。The control unit 108 inputs the CoMP communication request from the CoMP communication request signal extracting unit 107, and further outputs a CoMP execution notification to the scheduler 110 when receiving the CoMP execution notification from the primary base station 100-1.
排程器110依從無線線路品質資訊抽出部109輸出之無線線路品質資訊，進行下行方向之排程。又，排程器110從控制部108收取CoMP執行通知，從主基地台100-1接收CoMP控制信號時，進行用以執行CoMP發送之排程。排程器根據排程，控制編碼調變部114及發送無線部115，以進行編碼處理等。The scheduler 110 follows the wireless channel quality information output from the wireless channel quality information extracting unit 109 to schedule the downlink. Further, the scheduler 110 receives the CoMP execution notification from the control unit 108, and when receiving the CoMP control signal from the primary base station 100-1, performs scheduling for performing CoMP transmission. The scheduler controls the code modulation unit 114 and the transmission wireless unit 115 to perform encoding processing and the like according to the schedule.
擾碼作成部112從主基地台100-1輸入細胞資訊，依細胞資訊，作成擾碼之初始值，依序作成擾碼。詳細內容後述。由於擾碼作成部112依從主基地台100-1通知之細胞資訊，作成擾碼，故主基地台100-1及從基地台100-2作成同一擾碼。所作成之擾碼輸出至編碼調變部114，對從從基地台100-2發送之發送資料進行擾亂處理。The scrambling code creation unit 112 inputs cell information from the main base station 100-1, and creates an initial value of the scrambling code based on the cell information, and sequentially creates a scrambling code. The details will be described later. Since the scrambling code creation unit 112 creates the scrambling code in accordance with the cell information notified from the main base station 100-1, the primary base station 100-1 and the base station 100-2 create the same scrambling code. The generated scrambling code is output to the code modulation unit 114, and the transmission data transmitted from the base station 100-2 is subjected to scrambling processing.
接著，就終端機200之結構例作說明。第5圖係顯示終端機200之結構例的圖。Next, a description will be given of a configuration example of the terminal device 200. Fig. 5 is a view showing a configuration example of the terminal device 200.
終端機200具有天線201、接收無線部202、解調解碼部203、無線品質測量及算出部(以下稱為算出部)204、無線線路品質資訊作成部205、細胞資訊抽出部206、擾碼作成部207、接收控制信號抽出部208、終端機設定控制部209、接收電力測量部210、線路連接控制部211、連接要求信號作成部212、編碼調變部213、發送無線部214、CoMP通訊控制部220、CoMP通訊要求信號作成部221。The terminal 200 includes an antenna 201, a reception radio unit 202, a demodulation and decoding unit 203, a radio quality measurement and calculation unit (hereinafter referred to as a calculation unit) 204, a radio channel quality information creation unit 205, a cell information extraction unit 206, and a scrambling code creation. Unit 207, reception control signal extraction unit 208, terminal setting control unit 209, reception power measurement unit 210, line connection control unit 211, connection request signal creation unit 212, code modulation unit 213, transmission radio unit 214, and CoMP communication control The unit 220 and the CoMP communication request signal creation unit 221.
天線201在與各基地台100-1、100-2間發送接收無線信號。The antenna 201 transmits and receives a wireless signal to and from each of the base stations 100-1 and 100-2.
接收無線部202將以天線201所接收之無線信號作為接收信號而輸出。The reception radio unit 202 outputs a radio signal received by the antenna 201 as a reception signal.
解調解碼部203使用以擾碼作成部207作成之擾碼，將接收信號解擾亂，依以終端設定控制部209所設定之解調方式等，對接收信號進行解調及解碼。The demodulation and decoding unit 203 demodulates the received signal using the scrambling code created by the scramble code generating unit 207, and demodulates and decodes the received signal in accordance with the demodulation method set by the terminal setting control unit 209 or the like.
算出部204對從主基地台100-1或從基地台100-2發送之引示信號等，測量各無線線路之無線品質。算出部204藉測量引示信號之SINR(Signal to Interference Noise Ratio：信號對干擾雜訊比)等，而測量無線線路品質。The calculation unit 204 measures the wireless quality of each wireless line with respect to a pilot signal transmitted from the primary base station 100-1 or the base station 100-2. The calculation unit 204 measures the radio channel quality by measuring the SINR (Signal to Interference Noise Ratio) of the pilot signal or the like.
無線線路品質資訊作成部205依從算出部204輸出之無線線路品質，作成無線線路品質資訊。無線線路品質資訊為例如，CQI(Channel Quality Indicator)等。所作成之無線線路品質資訊輸出至編碼調變部213。The wireless channel quality information creating unit 205 creates wireless channel quality information in accordance with the wireless channel quality outputted by the calculating unit 204. The radio channel quality information is, for example, a CQI (Channel Quality Indicator) or the like. The created wireless channel quality information is output to the code modulation unit 213.
細胞資訊抽出部206在從解調解碼部203所輸出之接收信號中抽出細胞資訊。所抽出之細胞資訊輸出至擾碼作成部207。The cell information extracting unit 206 extracts cell information from the received signal output from the demodulation decoding unit 203. The extracted cell information is output to the scrambling code creation unit 207.
擾碼作成部207依細胞資訊(包含細胞號碼、終端機號碼、槽號碼)，作成擾碼之初始值，依序作成擾碼。擾碼作成部107將所作成之擾碼輸出至解調解碼部203。The scrambling code creation unit 207 creates an initial value of the scrambling code based on the cell information (including the cell number, the terminal number, and the slot number), and sequentially creates a scrambling code. The scrambling code creation unit 107 outputs the generated scrambling code to the demodulation decoding unit 203.
接收控制信號抽出部208在接收信號中抽出控制信號，輸出至終端機設定控制部209。The reception control signal extracting unit 208 extracts a control signal from the received signal and outputs it to the terminal setting control unit 209.
終端機設定控制部209根據控制信號所含之排程資訊，控制接收無線部202及解調解碼部203，以可將基地台100-1、100-2之接收資料等解調、解碼等。The terminal setting control unit 209 controls the receiving wireless unit 202 and the demodulation decoding unit 203 based on the schedule information included in the control signal so that the received data of the base stations 100-1 and 100-2 can be demodulated, decoded, and the like.
接收電力測量部210測量接收信號中例如引示信號之接收電力，將測量結果輸出至線路連接控制部211及CoMP通訊控制部220。The received power measurement unit 210 measures the received power of, for example, the pilot signal in the received signal, and outputs the measurement result to the line connection control unit 211 and the CoMP communication control unit 220.
線路連接控制部211依接收電力，決定是否連接與基地台100-1、100-2之線路。線路連接控制部211係例如，於接收電力在閾值以上時，決定連接線路，若非如此時，決定不連接線路。線路連接控制部211決定連接線路時，將指示信號輸出至連接要求信號作成部212。The line connection control unit 211 determines whether or not to connect the lines with the base stations 100-1 and 100-2 based on the received power. The line connection control unit 211 determines the connection line when the received power is equal to or higher than the threshold value, and if not, determines that the line is not connected. When the line connection control unit 211 determines the connection line, the line connection control unit 211 outputs an instruction signal to the connection request signal creation unit 212.
連接要求信號作成部212依指示信號，作成連接要求信號，輸出至編碼調變部213。The connection request signal creation unit 212 creates a connection request signal based on the instruction signal, and outputs it to the code modulation unit 213.
CoMP通訊控制部220於接收電力在例如閾值以上時，將CoMP通訊要求信號之作成指示輸出至CoMP通訊要求信號作成部221。When the received power is equal to or greater than, for example, the threshold value, the CoMP communication control unit 220 outputs an instruction to generate a CoMP communication request signal to the CoMP communication request signal creation unit 221.
CoMP通訊要求信號作成部221依來自CoMP通訊控制部220之指示，作成CoMP通訊要求信號，輸出至編碼調變部213。The CoMP communication request signal creation unit 221 creates a CoMP communication request signal in response to an instruction from the CoMP communication control unit 220, and outputs it to the code modulation unit 213.
編碼調變部213對無線線路品質資訊、連接要求信號、CoMP通訊要求信號等，執行編碼及調變處理。The code modulation unit 213 performs coding and modulation processing on the radio channel quality information, the connection request signal, the CoMP communication request signal, and the like.
發送無線部214對業經編碼等之無線線路品質資訊等，進行發送電力之控制，將之作為無線信號而輸出至天線201。無線線路品質資訊等作為無線信號而發送至基地台100-1、100-2。The transmission radio unit 214 controls the transmission power for the radio channel quality information or the like that has been encoded, and outputs it to the antenna 201 as a radio signal. The radio channel quality information and the like are transmitted to the base stations 100-1 and 100-2 as radio signals.
接著，就主基地台100-1、從基地台100-2之擾碼作成部112及終端機200之擾碼作成部207之結構例作說明。第6圖係顯示擾碼作成部112、207之結構例的圖，為已知之金氏碼生成器。Next, a description will be given of a configuration example of the scrambling code creation unit 207 of the main base station 100-1, the scrambling code creation unit 112 of the base station 100-2, and the terminal unit 200. Fig. 6 is a view showing a configuration example of the scrambling code creation units 112 and 207, and is a known Kim's code generator.
擾碼作成部112、207具有第1及第2暫存器(或正反器)112-1、112-3、第1~第3排他性邏輯和電路112-2、112-4、112-5。The scrambling code creation units 112 and 207 have first and second temporary registers (or flip-flops) 112-1 and 112-3, and first to third exclusive logical AND circuits 112-2, 112-4, and 112-5. .
擾碼作成部112、207生成長度「31」之金氏碼(或擾碼)，該輸出為擾碼c(n)。擾碼c(n)之生成多項式以上述數2~數4表示。The scrambling code creation units 112 and 207 generate a King's code (or scrambling code) of length "31", and the output is a scrambling code c(n). The generator polynomial of the scrambling code c(n) is represented by the above number 2 to 4.
接著，就第1實施例之動作例作說明。第7圖及第8圖係顯示動作例之流程圖。此外，終端機200係位於可與主基地台100-1及從基地台100-2兩者通訊連接之區域者。Next, an operation example of the first embodiment will be described. Fig. 7 and Fig. 8 are flowcharts showing an example of the operation. Further, the terminal 200 is located in an area connectable to both the primary base station 100-1 and the base base station 100-2.
首先，主基地台100-1將細胞資訊等通報終端機200(S10)。主基地台100-1通報之細胞資訊亦可包含以細胞資訊信號作成部106所作成之細胞資訊(細胞號碼、終端機及槽號碼)。First, the main base station 100-1 notifies the terminal device 200 of the cell information or the like (S10). The cellular information notified by the primary base station 100-1 may also include cellular information (cell number, terminal, and slot number) created by the cellular information signal generating unit 106.
接著，主基地台100-1發送引示信號(S11)。舉例言之，引示信號以主基地台100-1之發送無線部115生成。Next, the primary base station 100-1 transmits a pilot signal (S11). For example, the pilot signal is generated by the transmitting radio unit 115 of the primary base station 100-1.
然後，終端機200依所接收之引示信號等，選擇作為通訊對象之細胞(S12)，在與所選擇之細胞間設定線路(S13)。舉例言之，藉終端機200之接收電力測量部210測量引示信號之接收電力，線路連接控制部211判定線路之連接，而選擇細胞(例如主基地台100-1)。然後，連接要求信號作成部212作成連接要求信號，將之發送至主基地台100-1，進行線路之設定。終端機200最初與主基地台100-1連接。Then, the terminal device 200 selects a cell to be a communication target based on the received pilot signal or the like (S12), and sets a line between the selected cell (S13). For example, the received power measuring unit 210 of the terminal 200 measures the received power of the pilot signal, and the line connection control unit 211 determines the connection of the line to select a cell (for example, the primary base station 100-1). Then, the connection request signal creation unit 212 creates a connection request signal, transmits it to the main base station 100-1, and sets the line. The terminal 200 is initially connected to the primary base station 100-1.
接著，終端機200測量與主基地台100-1之無線線路之品質(例如CQI)(S14)，將無線線路品質資訊發送至主基地台100-1(S15)。舉例言之，終端機200之算出部204依引示信號，測量無線線路品質，無線線路品質資訊作成部205作成無線線路品質資訊，將該資訊發送至主基地台100-1。Next, the terminal 200 measures the quality (for example, CQI) of the wireless line with the primary base station 100-1 (S14), and transmits the wireless channel quality information to the primary base station 100-1 (S15). For example, the calculation unit 204 of the terminal 200 measures the radio channel quality based on the pilot signal, and the radio channel quality information creation unit 205 creates the radio channel quality information, and transmits the information to the main base station 100-1.
然後，主基地台100-1依無線線路品質資訊，進行排程(S16)。例如，主基地台100-1之排程器110依以無線品質資訊抽出部109所抽出之無線品質資訊，進行排程。Then, the master base station 100-1 performs scheduling according to the wireless channel quality information (S16). For example, the scheduler 110 of the main base station 100-1 performs scheduling based on the wireless quality information extracted by the wireless quality information extracting unit 109.
其次，主基地台100-1進行發送信號處理(S17)。舉例言之，編碼調變部114讀取記憶於發送資料緩衝器113之發送資料，以業經以排程器110排程之編碼率等進行編碼等處理。又，關於包含以控制信號作成部111所作成之排程資訊之控制信號亦在編碼調變部114執行編碼等處理。Next, the master base station 100-1 performs transmission signal processing (S17). For example, the code modulation unit 114 reads the transmission data stored in the transmission data buffer 113, and performs processing such as encoding by the coding rate of the scheduler 110 or the like. Further, the control signal including the schedule information created by the control signal generation unit 111 is also subjected to processing such as encoding in the code modulation unit 114.
然後，主基地台100-1將控制信號及發送資料發送至終端機200(S18、S19)。Then, the master base station 100-1 transmits the control signal and the transmission data to the terminal device 200 (S18, S19).
終端機200接收控制信號及發送資料時，進行接收信號處理(S20)。舉例言之，終端機設定控制部209根據所接收之控制信號所含之排程資訊，控制接收無線部202及解調解碼部203，以進行解調、解碼等。When the terminal 200 receives the control signal and transmits the data, it performs reception signal processing (S20). For example, the terminal setting control unit 209 controls the receiving wireless unit 202 and the demodulation decoding unit 203 to perform demodulation, decoding, and the like based on the schedule information included in the received control signal.
接著，終端機200接收從從基地台100-2所通報之細胞資訊等及引示信號(S21、S22)。然後，終端機200選擇從基地台100-2作為連接基地台(S23)，在與從基地台100-2間設定線路(S24)。Next, the terminal device 200 receives the cell information and the like signal (S21, S22) notified from the base station 100-2. Then, the terminal 200 selects the base station 100-2 as the connection base station (S23), and sets a line with the slave base station 100-2 (S24).
其次，在終端機200與基地台100-1、100-2間，進行用以執行CoMP發送之處理。首先，終端機200從主基地台100-1及從基地台100-2分別接收引示信號(S25、S26)，測量各無線線路之線路品質(S27)。舉例言之，以終端機200之算出部204測量各無線線路品質。此外，此時，為易識別主基地台100-1及從基地台100-2之引示信號，亦可為以主基地台100-1之細胞號碼及從基地台100-2之原本之細胞號碼為基礎而作成之不同引示信號。Next, a process for performing CoMP transmission is performed between the terminal 200 and the base stations 100-1 and 100-2. First, the terminal 200 receives the pilot signals from the master base station 100-1 and the slave base station 100-2 (S25, S26), and measures the channel quality of each wireless line (S27). For example, the calculation unit 204 of the terminal 200 measures the quality of each radio channel. In addition, at this time, the signal indicating the primary base station 100-1 and the base station 100-2 may be the cell number of the primary base station 100-1 and the original cell from the base station 100-2. The number is based on different indication signals.
然後，終端機200將所測量之各無線線路品質分別發送至從基地台100-2及主基地台100-1(S28、S30)。舉例言之，以無線線路品質資訊作成部205作成各無線線路品質資訊，發送該資訊。Then, the terminal 200 transmits the measured radio channel qualities to the slave base station 100-2 and the master base station 100-1 (S28, S30). For example, the wireless channel quality information creating unit 205 creates each wireless channel quality information and transmits the information.
從基地台100-2將從終端機200所發送之無線線路品質資訊發送至主基地台100-1(S29)。舉例言之，從基地台100-2之無線線路品質資訊抽出部109將與所抽出之終端機200間之無線線路品質發送至主基地台100-1。The base station 100-2 transmits the wireless channel quality information transmitted from the terminal 200 to the primary base station 100-1 (S29). For example, the wireless channel quality information extracting unit 109 from the base station 100-2 transmits the wireless channel quality between the extracted terminal devices 200 to the primary base station 100-1.
接著，主基地台100-1進行可否進行CoMP發送之判定(S31)。舉例言之，主基地台100-1之控制部108於基地台100-2之無線線路品質與以CoMP通訊要求信號抽出部107所抽出之無線線路品質皆在閾值以上時，判定可進行CoMP通訊。與主基地台100-1之無線線路品質比較之閾值及與從基地台100-2之無線線路品質比較之閾值可為相同，亦可為不同。此外，控制部108於判定無法進行CoMP發送時，便結束一連串之處理。Next, the master base station 100-1 determines whether or not the CoMP transmission is possible (S31). For example, when the control unit 108 of the master base station 100-1 determines that the radio channel quality of the base station 100-2 and the radio channel quality extracted by the CoMP communication request signal extracting unit 107 are both above the threshold value, it is determined that CoMP communication can be performed. . The threshold value compared with the radio channel quality of the primary base station 100-1 and the threshold value compared with the radio channel quality of the base station 100-2 may be the same or different. Further, when the control unit 108 determines that the CoMP transmission cannot be performed, the control unit 108 ends the series of processing.
然後，終端機200將CoMP發送執行要求發送至從基地台100-2及主基地台100-1(S32、S33)。舉例言之，以終端機200之CoMP通訊控制部220輸出執行要求之指示，從CoMP通訊要求信號作成部221發送該要求信號。Then, the terminal 200 transmits a CoMP transmission execution request to the slave base station 100-2 and the master base station 100-1 (S32, S33). For example, the CoMP communication control unit 220 of the terminal 200 outputs an instruction to execute the request, and transmits the request signal from the CoMP communication request signal creation unit 221.
主基地台100-1判定為可進行CoMP發送(S31)，而從終端機200接收CoMP執行要求時(S33)，將CoMP執行通知發送至從基地台100-2及終端機200(S34、S35)。舉例言之，主基地台100-1之控制部108將CoMP執行通知發送至從基地台100-2。又，舉例言之，控制部108將CoMP執行通知輸出至排程器110，從排程器110將CoMP執行通知作為控制信號而發送至終端機200。The master base station 100-1 determines that CoMP transmission is possible (S31), and when receiving the CoMP execution request from the terminal device 200 (S33), transmits a CoMP execution notification to the slave base station 100-2 and the terminal device 200 (S34, S35). ). For example, the control unit 108 of the primary base station 100-1 transmits a CoMP execution notification to the secondary base station 100-2. Further, for example, the control unit 108 outputs a CoMP execution notification to the scheduler 110, and transmits a CoMP execution notification from the scheduler 110 as a control signal to the terminal 200.
接著，主基地台100-1及從基地台100-2在基地台間進行用以採取同步之處理(S36)。這是由於在CoMP發送中，將發送資料同步發送至終端機200之故。舉例言之，主基地台100-1及從基地台100-2之控制部藉相互進行信號之發送接收，使相位同步，而進行同步處理。Next, the master base station 100-1 and the slave base station 100-2 perform processing for taking synchronization between the base stations (S36). This is because the transmission data is synchronously transmitted to the terminal 200 in the CoMP transmission. For example, the master base station 100-1 and the control unit from the base station 100-2 perform synchronization processing by transmitting and receiving signals to each other to synchronize the phases.
然後，主基地台100-1進行用以進行CoMP發送之排程(S37)。舉例言之，排程器110從控制部108收取CoMP執行通知時，依無線線路品質(S29、S30)等，進行排程。所作成之排程資訊包含用於CoMP發送之使用頻率及預編碼資訊。Then, the master base station 100-1 performs scheduling for performing CoMP transmission (S37). For example, when the scheduler 110 receives the CoMP execution notification from the control unit 108, the scheduler 110 performs scheduling according to the radio channel quality (S29, S30) or the like. The schedule information made includes the frequency of use and precoding information for CoMP transmission.
其次，主基地台100-1將細胞資訊發送至從基地台100-2(S38)。舉例言之，細胞資訊信號作成部106從無線線路控制部105輸入細胞號碼及終端機號碼，並輸入從排程器110輸出之槽號碼，作成包含細胞號碼、終端機號碼及槽號碼之細胞資訊後發送。舉例言之，細胞號碼及終端機號碼係於與終端機200設定線路(S13)時，以無線線路控制部105作成者，細胞資訊作成部106以控制部108之CoMP執行通知為契機而亦可從無線線路控制部105讀取細胞號碼等。關於槽號碼，排程器110亦可以排程(S37)，將該號碼輸出至細胞資訊作成部106。此外，終端機200亦可直接將所測量算出之與從基地台100-2之無線線路品質通知主基地台100-1。Next, the master base station 100-1 transmits the cell information to the slave base station 100-2 (S38). For example, the cell information signal creation unit 106 inputs the cell number and the terminal number from the wireless line control unit 105, and inputs the slot number output from the scheduler 110 to create a cell information including the cell number, the terminal number, and the slot number. After sending. For example, when the cell number and the terminal number are set to the terminal 200 (S13), the radio channel control unit 105 is created, and the cell information creation unit 106 may be notified by the CoMP execution notification of the control unit 108. The cell number and the like are read from the wireless line control unit 105. Regarding the slot number, the scheduler 110 can also schedule (S37), and output the number to the cell information creating unit 106. Further, the terminal 200 can directly notify the master base station 100-1 of the measured radio channel quality from the base station 100-2.
接著，主基地台100-1將發送資料(例如發送資料2)轉送至從基地台100-2(S39)。舉例言之，主基地台100-1之排程器110在記憶於發送資料緩衝器113之發送資料中讀取一部份(例如發送資料2)，將之發送至從基地台100-2。從基地台100-2之發送資料緩衝器113記憶從主基地台100-1所發送之發送資料。發送資料1及發送資料2係依各細胞而不同之發送資料。Next, the master base station 100-1 transfers the transmission material (for example, the transmission material 2) to the slave base station 100-2 (S39). For example, the scheduler 110 of the primary base station 100-1 reads a portion (e.g., transmission material 2) in the transmission data stored in the transmission data buffer 113, and transmits it to the secondary base station 100-2. The transmission data transmitted from the primary base station 100-1 is stored from the transmission data buffer 113 of the base station 100-2. Sending data 1 and sending data 2 are different depending on each cell.
然後，主基地台100-1將發送控制資訊通知至從基地台100-2(S40)。舉例言之，排程器110將包含預編碼資訊等之排程資訊(S37)作為發送控制資訊，發送至從基地台100-2。Then, the master base station 100-1 notifies the transmission control information to the slave base station 100-2 (S40). For example, the scheduler 110 transmits scheduling information (S37) including precoding information and the like as transmission control information to the slave base station 100-2.
接著，主基地台100-1及從基地台100-2進行發送信號處理(S41、S42)。舉例言之，主基地台100-1之擾碼作成部112依無線線路控制部105之細胞號碼及終端機號碼與排程器110之槽號碼，作成擾碼。編碼調變部114使用該擾碼，對發送資料1進行擾亂處理。然後，發送資料1根據排程(S37)而編碼等。另一方面，從基地台100-2之擾碼作成部112使用從主基地台100-1發送之細胞資訊(S38)，作成擾碼，編碼調變部114對發送資料2進行擾亂處理。發送資料2依從主基地台100-1發送之發送控制資訊而編碼等。如此，由於主基地台100-1及從基地台100-2從共通之細胞號碼、終端機號碼、槽號碼，作成擾碼，故可作成同一擾碼。Next, the master base station 100-1 and the slave base station 100-2 perform signal transmission processing (S41, S42). For example, the scrambling code creation unit 112 of the primary base station 100-1 creates a scrambling code according to the cell number of the wireless line control unit 105 and the terminal number and the slot number of the scheduler 110. The code modulation unit 114 performs a scrambling process on the transmission material 1 using the scrambling code. Then, the transmission material 1 is encoded according to the schedule (S37) and the like. On the other hand, the scrambling code creation unit 112 of the base station 100-2 uses the cell information transmitted from the primary base station 100-1 (S38) to generate a scrambling code, and the code modulation unit 114 performs a scrambling process on the transmission data 2. The transmission data 2 is encoded in accordance with the transmission control information transmitted from the primary base station 100-1. In this way, since the primary base station 100-1 and the base station 100-2 generate the scrambling code from the common cell number, the terminal number, and the slot number, the same scrambling code can be created.
其次，主基地台100-1將控制信號及發送資料發送至終端機200(S43、S44)。控制信號除了在CoMP發送使用之編碼率等以外，亦包含使用頻率及預編碼資訊等，亦包含以細胞資訊信號作成部106所作成之細胞資訊。Next, the master base station 100-1 transmits the control signal and the transmission data to the terminal device 200 (S43, S44). The control signal includes, in addition to the coding rate used for CoMP transmission, the use frequency and precoding information, and the cellular information generated by the cell information signal generation unit 106.
然後，從基地台100-2將與主基地台100-1所發送之發送資料不同之發送資料(例如發送資料2)發送至終端機200(S45)。舉例言之，發送資料1及發送資料2根據預編碼資訊，加權後發送。Then, transmission data (for example, transmission material 2) different from the transmission data transmitted from the primary base station 100-1 is transmitted from the base station 100-2 to the terminal 200 (S45). For example, the transmission data 1 and the transmission data 2 are transmitted according to the pre-encoded information.
其次，終端機200對從主基地台100-1及從基地台100-2所發送之發送資料進行接收信號處理(S46)。舉例言之，終端機200之終端機設定控制部20根據控制信號(S43)所含之排程資訊，控制接收無線部202、解調解碼部203，以可接收主基地台100-1及從基地台100-2之各發送資料。此時，終端機200之擾碼作成部207依細胞資訊(S10或S43)，作成擾碼。由於細胞資訊係與在主基地台100-1及從基地台100-2使用者相同，故終端機200可作成與以基地台100-1、100-2所作成之擾碼相同之擾碼。解調解碼部203依擾碼，對發送資料1及發送資料2進行解擾亂處理。Next, the terminal 200 performs reception signal processing on the transmission data transmitted from the primary base station 100-1 and the base station 100-2 (S46). For example, the terminal setting control unit 20 of the terminal 200 controls the receiving wireless unit 202 and the demodulation decoding unit 203 based on the scheduling information included in the control signal (S43) to receive the primary base station 100-1 and the slave. Each of the base stations 100-2 transmits data. At this time, the scrambling code creation unit 207 of the terminal 200 creates a scrambling code based on the cell information (S10 or S43). Since the cell information is the same as that of the primary base station 100-1 and the base station 100-2, the terminal 200 can create the same scrambling code as that of the base stations 100-1 and 100-2. The demodulation and decoding unit 203 performs descrambling processing on the transmission data 1 and the transmission data 2 in accordance with the scrambling code.
如此，由於本第1實施例於進行CoMP發送時，主基地台100-1將細胞資訊發送至從基地台100-2(S38)，故將用以作成擾碼之資訊共用化，而可作成共通之擾碼。因而，與作成在各基地台100-1、100-2不同之擾碼，進行擾亂處理時相較，本無線通訊系統可謀求處理之減輕。又，由於可減輕處理，故亦可刪減終端機200與基地台100-1、100-2之耗費電力。As described above, in the first embodiment, when the CoMP transmission is performed, the master base station 100-1 transmits the cell information to the slave base station 100-2 (S38), so that the information for creating the scrambling code is shared, and the information can be created. Common scrambling code. Therefore, compared with the scrambling code which is different between each of the base stations 100-1 and 100-2, the wireless communication system can reduce the processing. Moreover, since the processing can be reduced, the power consumption of the terminal 200 and the base stations 100-1 and 100-2 can be reduced.
又，主基地台100-1將預編碼資訊發送至從基地台100-2(S40)，2個基地台100-1、100-2依預編碼資訊將不同之資料發送至終端機200。因而，由於即使使用共通擾碼而不同之資料從2個基地台100-1、100-2發送，終端機200亦可依控制信號所含之預編碼資訊，進行接收處理(S43、S46)，故亦可防止2個不同之資料之干擾。Further, the master base station 100-1 transmits the precoding information to the slave base station 100-2 (S40), and the two base stations 100-1 and 100-2 transmit different data to the terminal device 200 based on the precoded information. Therefore, since different data is transmitted from the two base stations 100-1 and 100-2 even if the common scrambling code is used, the terminal 200 can perform reception processing according to the precoding information included in the control signal (S43, S46). Therefore, it is also possible to prevent interference of two different data.
接著，就上行方向之例作說明。第2實施例係將資料從終端機200發送至基地台100-1、100-2之上行方向之例。Next, an example of the upward direction will be described. The second embodiment is an example in which data is transmitted from the terminal 200 to the uplink direction of the base stations 100-1 and 100-2.
第9圖係顯示第2實施例之無線通訊系統10之結構例的圖。主基地台100-1將控制信號發送至終端機200。終端機200依所接收之控制信號，將不同之發送資料(USCH)發送至主基地台100-1及從基地台100-2。Fig. 9 is a view showing a configuration example of the wireless communication system 10 of the second embodiment. The primary base station 100-1 transmits a control signal to the terminal 200. The terminal 200 transmits different transmission data (USCH) to the primary base station 100-1 and the secondary base station 100-2 in accordance with the received control signal.
接著，說明第2實施例之主基地台100-1之結構例。第10圖係顯示主基地台100-1之結構例的圖。Next, a configuration example of the main base station 100-1 of the second embodiment will be described. Fig. 10 is a view showing a configuration example of the main base station 100-1.
主基地台100-1更具有無線線路品質測量及算出部(以下稱為算出部)121。算出部121依從終端機200所發送之引示信號等，測量與終端機200間之無線線路品質，並測量無線線路品質(例如CQI)。The main base station 100-1 further includes a radio channel quality measurement and calculation unit (hereinafter referred to as a calculation unit) 121. The calculation unit 121 measures the radio channel quality with the terminal device 200 in accordance with the pilot signal transmitted from the terminal device 200, and measures the radio channel quality (for example, CQI).
又，主基地台100-1之排程器110為進行上行方向之排程，而根據所作成之排程資訊，控制解調解碼部103及接收無線部102。Further, the scheduler 110 of the master base station 100-1 performs scheduling in the uplink direction, and controls the demodulation and decoding unit 103 and the reception radio unit 102 based on the schedule information created.
再者，擾碼作成部112為對從終端機200所發送之發送資料等進行解擾亂處理，而將所作成之擾碼輸出至解調解碼部103。Further, the scrambling code creation unit 112 performs descrambling processing on the transmission data and the like transmitted from the terminal device 200, and outputs the generated scrambling code to the demodulation decoding unit 103.
接著，說明第2實施例之從基地台100-2之結構例。第11圖係顯示從基地台100-2之結構例的圖。Next, a configuration example of the slave base station 100-2 of the second embodiment will be described. Fig. 11 is a view showing a configuration example of the slave base station 100-2.
從基地台100-2亦具有算出部121。The slave base station 100-2 also has a calculation unit 121.
又，從基地台100-2之排程器110為進行上行方向之排序，而根據排程資訊，控制解調解碼部103及接收無線部102。Further, the scheduler 110 of the base station 100-2 sorts the uplink direction, and controls the demodulation and decoding unit 103 and the reception radio unit 102 based on the schedule information.
再者，擾碼作成部112亦為對從終端機200發送之發送資料等進行解擾亂處理，而將所作成之擾碼輸出至解調解碼部103。Furthermore, the scrambling code creation unit 112 also performs descrambling processing on the transmission data transmitted from the terminal device 200, and outputs the generated scrambling code to the demodulation decoding unit 103.
接著，說明第2實施例之終端機200之結構例。第12圖係顯示終端機200之結構例的圖。本終端機200亦為與下行方向之終端機200(第5圖)相同之結構。Next, a configuration example of the terminal device 200 of the second embodiment will be described. Fig. 12 is a view showing a configuration example of the terminal device 200. The terminal device 200 is also configured in the same manner as the terminal device 200 (Fig. 5) in the downstream direction.
終端機設定部209為對發送至基地台100-1、100-2之發送資料等，根據控制信號，進行編碼等處理，而控制編碼調變部213。又，終端機設定控制部209根據控制信號所含之預編碼資訊，控制發送無線部214，以將不同之發送資料加權，而發送至基地台100-1、100-2。The terminal setting unit 209 controls the code modulation unit 213 by performing processing such as encoding on the transmission data transmitted to the base stations 100-1 and 100-2 based on the control signal. Further, the terminal setting control unit 209 controls the transmission radio unit 214 based on the precoding information included in the control signal to weight the different transmission data and transmit the data to the base stations 100-1 and 100-2.
又，擾碼作成部207為對要發送至基地台100-1、100-2之發送資料進行擾亂處理，而將所作成之擾碼輸出至編碼調變部213。Further, the scrambling code creation unit 207 performs scrambling processing on the transmission data to be transmitted to the base stations 100-1 and 100-2, and outputs the generated scrambling code to the code modulation unit 213.
各基地台100-1、100-2及終端機200之擾碼作成部112、207與第1實施例相同。The scrambling code creation units 112 and 207 of the base stations 100-1 and 100-2 and the terminal unit 200 are the same as those of the first embodiment.
接著，就第2實施例之動作例作說明。第13圖及第14圖係顯示動作例之流程圖。Next, an operation example of the second embodiment will be described. Fig. 13 and Fig. 14 are flowcharts showing an operation example.
在主基地台100-1與終端機200-間設定線路後(S10~S13)，終端機200將引示信號發送至主基地台100-1(S50)。舉例言之，終端機200之發送無線部214生成引示信號後發送。主基地台100-1發送之細胞資訊(S10)亦可包含以細胞資訊信號作成部106所作成之細胞資訊。After the line is set between the main base station 100-1 and the terminal 200- (S10 to S13), the terminal 200 transmits a pilot signal to the master base station 100-1 (S50). For example, the transmitting wireless unit 214 of the terminal 200 generates a pilot signal and transmits it. The cell information (S10) transmitted by the main base station 100-1 may also include cellular information created by the cell information signal generating unit 106.
接著，主基地台100-1依引示信號，測量上行方向之無線線路品質(例如CQI)(S51)。舉例言之，以主基地台100-1之算出部121進行測量等。Next, the master base station 100-1 measures the radio channel quality (for example, CQI) in the uplink direction according to the pilot signal (S51). For example, the measurement unit 121 of the main base station 100-1 performs measurement or the like.
然後，主基地台100-1依所測量之無線線路品質，進行上行方向之排程(S16)。舉例言之，排程器110依從算出部121輸出之無線線路品質進行排程。Then, the master base station 100-1 performs scheduling in the uplink direction in accordance with the measured radio channel quality (S16). For example, the scheduler 110 schedules according to the quality of the wireless line output by the calculation unit 121.
接著，主基地台100-1發送包含上行方向之排程資訊之控制信號(S18)，終端機200依該控制信號，進行發送信號處理(S52)。舉例言之，主基地台100-1之控制信號作成部111作成包含排程資訊之控制信號，藉由編碼調變部114等發送。又，終端機200之編碼調變部213根據所接收之控制信號所含之排程資訊，將發送資料進行編碼及調變處理。Next, the master base station 100-1 transmits a control signal including the schedule information in the uplink direction (S18), and the terminal device 200 performs transmission signal processing in accordance with the control signal (S52). For example, the control signal generation unit 111 of the master base station 100-1 creates a control signal including schedule information, and transmits it by the code modulation unit 114 or the like. Further, the code modulation unit 213 of the terminal 200 encodes and modulates the transmission data based on the schedule information included in the received control signal.
然後，終端機200將發送資料發送至主基地台100-1(S53)。Then, the terminal 200 transmits the transmission data to the main base station 100-1 (S53).
接著，終端機200在與從基地台100-2間進行線路設定等處理(S21~S24)。然後，在終端機200與基地台100-1、100-2間進行用以進行CoMP發送之處理。Next, the terminal 200 performs processing such as line setting with the slave base station 100-2 (S21 to S24). Then, processing for performing CoMP transmission is performed between the terminal 200 and the base stations 100-1 and 100-2.
首先，終端機200將CoMP發送執行要求發送至各基地台100-1、100-2(S32~S33)。舉例言之，終端機200之CoMP通訊控制部220於各無線線路品質之接收電力皆在閾值以上時，指示CoMP發送執行要求。CoMP通訊要求信號作成部221根據此指示，作成CoMP通訊要求信號，將之發送至基地台100-1、100-2。First, the terminal 200 transmits a CoMP transmission execution request to each of the base stations 100-1 and 100-2 (S32 to S33). For example, the CoMP communication control unit 220 of the terminal 200 instructs the CoMP transmission execution request when the received power of each radio channel quality is equal to or greater than the threshold. The CoMP communication request signal creation unit 221 creates a CoMP communication request signal based on the instruction, and transmits it to the base stations 100-1 and 100-2.
其次，終端機200將引示信號發送至各基地台100-1、100-2(S54、S55)。Next, the terminal 200 transmits a pilot signal to each of the base stations 100-1 and 100-2 (S54, S55).
然後，各基地台100-1、100-2測量各無線線路品質(S56、S57)。舉例言之，以各基地台100-1、100-2之算出部121測量無線線路品質。Then, each of the base stations 100-1 and 100-2 measures the quality of each radio channel (S56, S57). For example, the radio channel quality is measured by the calculation unit 121 of each of the base stations 100-1 and 100-2.
接著，從基地台100-2將所測量之無線線路品質發送至主基地台100-1(S58)。舉例言之，將從基地台100-2之算出部121所測量之無線線路品質發送至主基地台100-1。Next, the measured radio channel quality is transmitted from the base station 100-2 to the primary base station 100-1 (S58). For example, the radio channel quality measured by the calculation unit 121 of the base station 100-2 is transmitted to the main base station 100-1.
之後，主基地台100-1依2個無線線路品質，進行CoMP發送之判定(S31)。舉例言之，控制部108於2個無線線路品質皆在閾值以上時，判定為進行CoMP發送。此外，與在主基地台100-1所測量算出之無線線路品質比較之閾值及與在從基地台100-2測量算出之無線線路品質比較之閾值可為相同，亦可為不同。Thereafter, the master base station 100-1 performs CoMP transmission determination based on the two radio channel qualities (S31). For example, when the two radio channel qualities are equal to or greater than the threshold, the control unit 108 determines that CoMP transmission is performed. Further, the threshold value compared with the radio channel quality measured by the master base station 100-1 and the threshold value compared with the radio channel quality measured from the base station 100-2 may be the same or different.
主基地台100-1執行CoMP發送時，將CoMP發送執行通知發送至從基地台100-2及終端機200(S34~S35)。When the primary base station 100-1 performs CoMP transmission, it transmits a CoMP transmission execution notification to the secondary base station 100-2 and the terminal 200 (S34 to S35).
然後，主基地台100-1在與從基地台100-2間進行同步處理(S36)，進行用以進行CoMP發送之排程後(S37)，與第1實施例同樣地，將細胞資訊通知從基地台100-2(S38)。細胞資訊包含細胞號碼、終端機號碼及槽號碼。Then, the master base station 100-1 performs synchronization processing with the slave base station 100-2 (S36), and performs scheduling for performing CoMP transmission (S37), and notifies the cellular information as in the first embodiment. From base station 100-2 (S38). Cell information includes cell number, terminal number, and slot number.
之後，主基地台100-1將包含對上行方向之發送資料等之排程資訊(S37)之發送控制資訊發送至從基地台100-2(S40)，而將控制信號發送至終端機200(S43)。該控制信號亦可包含以細胞資訊信號作成部106所作成之細胞資訊。又，發送控制資訊及控制信號亦包含使用頻率及預編碼資訊。Thereafter, the master base station 100-1 transmits the transmission control information including the schedule information (S37) of the transmission data and the like in the uplink direction to the slave base station 100-2 (S40), and transmits the control signal to the terminal device 200 ( S43). The control signal may also include cellular information created by the cellular information signal generating unit 106. Moreover, the transmission control information and the control signal also include the frequency of use and precoding information.
接著，終端機200依所接收之控制信號，進行發送信號處理(S59)。舉例言之，擾碼作成部207依以細胞資訊抽出部206所抽出之細胞資訊(S10或S43)，作成擾碼，將所作成之擾碼輸出至編碼調變部213。編碼調變部213，例如對依各細胞而不同之發送資料1及發送資料2使用相同(或共通)擾碼，施行擾亂處理。又，終端機200之終端機設定控制部209依所接收之排程資訊，控制編碼調變部213，以進行編碼等處理。再者，終端機設定控制部209控制發送無線部214，以輸出根據控制信號所含之預編碼資訊而業經加權之發送資料。Next, the terminal 200 performs transmission signal processing in accordance with the received control signal (S59). For example, the scrambling code creation unit 207 generates a scrambling code based on the cell information extracted by the cell information extracting unit 206 (S10 or S43), and outputs the generated scramble code to the code modulation unit 213. The coding and modulation unit 213 performs the scrambling process by using the same (or common) scrambling code for the transmission data 1 and the transmission data 2 which are different for each cell. Further, the terminal setting control unit 209 of the terminal 200 controls the code modulation unit 213 to perform processing such as encoding in accordance with the received schedule information. Furthermore, the terminal setting control unit 209 controls the transmission radio unit 214 to output the weighted transmission data based on the precoding information included in the control signal.
然後，終端機200將不同之發送資料(例如，發送資料1及發送資料2)分別發送至主基地台100-1及從基地台100-2(S60、S61)。舉例言之，發送無線部214輸出根據控制信號所含之預編碼資訊而業經加權之發送資料。Then, the terminal 200 transmits the different transmission data (for example, the transmission data 1 and the transmission data 2) to the primary base station 100-1 and the secondary base station 100-2 (S60, S61). For example, the transmission radio unit 214 outputs the weighted transmission data based on the precoding information contained in the control signal.
接著，主基地台100-1對發送資料進行接收信號處理(S62)。舉例言之，主基地台100-1之擾碼作成部112依以排程器110決定之槽號碼(S37)及無線線路控制部105之細胞號碼與終端機號碼，作成擾碼。將所作成之擾碼輸出至解調解碼部103，對發送資料2進行解擾亂處理。之後，解調解碼部103對發送資料進行解調及解碼等處理。Next, the master base station 100-1 performs reception signal processing on the transmission data (S62). For example, the scrambling code creation unit 112 of the main base station 100-1 creates a scrambling code based on the slot number (S37) determined by the scheduler 110 and the cell number and the terminal number of the radio channel control unit 105. The generated scrambling code is output to the demodulation decoding unit 103, and the transmission data 2 is subjected to descrambling processing. Thereafter, the demodulation and decoding unit 103 performs processing such as demodulation and decoding of the transmission data.
又，從基地台100-2對發送資料進行接收信號處理(S63)。舉例言之，從基地台100-2之擾碼作成部112依從主基地台100-1所發送之細胞資訊(S38)，作成擾碼。所作之擾碼輸出至解調解碼部103，對發送資料1進行解擾亂處理。舉例言之，基地台100-1、100-2使用與終端機200在擾亂處理使用之擾碼相同之擾碼，分別對發送資料1或發送資料2進行解擾亂處理。Further, the base station 100-2 performs reception signal processing on the transmission data (S63). For example, the scrambling code creation unit 112 from the base station 100-2 makes a scrambling code in accordance with the cell information (S38) transmitted from the main base station 100-1. The scrambled code is output to the demodulation decoding unit 103, and the transmission data 1 is subjected to descrambling processing. For example, the base stations 100-1, 100-2 perform descrambling processing on the transmission data 1 or the transmission data 2, respectively, using the same scrambling code as the scrambling code used by the terminal 200 in the scrambling process.
然後，從基地台100-2將業經解調等之發送資料1轉送至主基地台100-1(S64)。舉例言之，從基地台100-2之解調解碼部103以排程器110之控制等，將發送資料1發送至主基地台100-1。Then, the transmission material 1 subjected to demodulation or the like is transferred from the base station 100-2 to the main base station 100-1 (S64). For example, the demodulation and decoding unit 103 of the base station 100-2 transmits the transmission material 1 to the main base station 100-1 under the control of the scheduler 110 or the like.
如此，在本第2實施例中，由於主基地台100-1亦將細胞資訊發送至從基地台100-2(S38)，故從基地台100-2可作成與主基地台100-1相同之擾碼。又，由於細胞資訊從主基地台100-1亦發送至終端機200，故終端機200亦可作成與基地台100-1、100-2相同之擾碼。因而，相較於作成不同之擾碼時，本無線通訊系統10可謀求處理之減輕。又，發送側之終端機200與接收側之各基地台100-1、100-2藉不作成不同之擾碼，而可謀求耗費電力刪減。As described above, in the second embodiment, since the master base station 100-1 also transmits the cell information to the slave base station 100-2 (S38), the slave base station 100-2 can be made the same as the master base station 100-1. Scrambling code. Further, since the cell information is also transmitted from the main base station 100-1 to the terminal device 200, the terminal device 200 can also create the same scrambling code as the base stations 100-1 and 100-2. Therefore, the present wireless communication system 10 can reduce the processing as compared with when a different scrambling code is created. Further, the terminal 200 on the transmitting side and each of the base stations 100-1 and 100-2 on the receiving side can generate power consumption reduction without making a different scrambling code.
接著，就其他實施例作說明。上述各實施例以主基地台100-1進行CoMP發送之判定者來說明(第8圖之S31等)。舉例言之，終端機200亦可進行此種判定。舉例言之，終端機200之CoMP通訊控制部220依所測量之無線通訊品質(第7圖之S27)，根據是否皆在閾值以上來判定。此時，所測量之無線通訊品質由於未發送至基地台100-1、100-2，故可進而謀求主基地台100-1之處理減輕。Next, other embodiments will be described. Each of the above embodiments is described by a judge who performs CoMP transmission by the primary base station 100-1 (S31 in Fig. 8 and the like). For example, the terminal 200 can also make such a determination. For example, the CoMP communication control unit 220 of the terminal 200 determines whether or not the wireless communication quality (S27 in FIG. 7) is equal to or higher than the threshold. At this time, since the measured wireless communication quality is not transmitted to the base stations 100-1 and 100-2, the processing of the primary base station 100-1 can be further reduced.
又，上述各實施例以終端機200進行CoMP發送之執行要求者來說明。舉例言之，主基地台100-1亦可進行執行要求。若為下行方向時，例如主基地台100-1判定進行CoMP發送時(S31)，亦可將CoMP執行要求發送至終端機200及從基地台100-2。之後，主基地台100-1可藉通知執行通知(S34、S35)來執行。又，關於上行方向，可藉於CoMP發送判定後(S31)，將CoMP發送要求發送至終端機200等，通知(S34~35)CoMP執行通知而執行。於第15圖(下行方向)、第16圖(上行方向)顯示此時之終端機200之結構例。終端機200與上述實施例相較，由於無CoMP通訊控制部220及CoMP通訊要求信號作成部221，故可進一步謀求耗費電力之刪減。Further, each of the above embodiments will be described with the requester who performs the execution of CoMP transmission by the terminal device 200. For example, the primary base station 100-1 can also perform execution requirements. In the case of the downlink direction, for example, when the master base station 100-1 determines to perform CoMP transmission (S31), the CoMP execution request may be transmitted to the terminal 200 and the slave base station 100-2. Thereafter, the master base station 100-1 can execute by the notification execution notification (S34, S35). Further, in the uplink direction, after the CoMP transmission determination (S31), the CoMP transmission request can be transmitted to the terminal device 200 or the like, and the (S34 to 35) CoMP execution notification can be notified and executed. The configuration example of the terminal device 200 at this time is shown in Fig. 15 (downward direction) and Fig. 16 (upward direction). Compared with the above-described embodiment, the terminal device 200 has no CoMP communication control unit 220 and the CoMP communication request signal creation unit 221, so that the power consumption can be further reduced.
再者，上述各實施例就從主基地台100-1及從基地台100-2之2個基地台100發送發送資料之例作了說明。舉例言之，具有複數細胞(或扇區)之1個基地台100亦可發送發送資料。第17圖係顯示基地台裝置100之結構例的圖。基地台裝置100具有主通訊部150-1、從通訊部150-2、連接於各通訊部150-1、150-2之天線101-1、101-2。主通訊部150-1具有主基地台100-1內之各部102等，從通訊部150-2具有從基地台100-2內之各部102等。舉例言之，從通訊部150-2將無線線路品質資訊輸出至主通訊部150-1，主通訊部150-1將細胞資訊等輸出至從通訊部150-2。藉此，基地台100在下行方向及上行方向可與第1及第2實施例同樣地執行。Furthermore, the above embodiments have described an example in which the transmission data is transmitted from the primary base station 100-1 and the two base stations 100 of the base station 100-2. For example, a base station 100 having a plurality of cells (or sectors) can also transmit and transmit data. Fig. 17 is a view showing a configuration example of the base station device 100. The base station device 100 includes a main communication unit 150-1, a slave communication unit 150-2, and antennas 101-1 and 101-2 connected to the respective communication units 150-1 and 150-2. The main communication unit 150-1 has the respective units 102 and the like in the main base station 100-1, and the communication unit 150-2 has the respective units 102 and the like in the base station 100-2. For example, the wireless channel quality information is output from the communication unit 150-2 to the main communication unit 150-1, and the main communication unit 150-1 outputs the cell information or the like to the slave communication unit 150-2. Thereby, the base station 100 can be executed in the downlink direction and the uplink direction in the same manner as in the first and second embodiments.
再者，在上述各實施例，在CoMP發送使用之細胞號碼、終端機號及槽號碼亦可作為CoMP專用之細胞號碼、終端機號碼及槽號碼。舉例言之，主基地台100-1之控制部108決定CoMP發送之執行時(S31)，將該通知輸出至細胞資訊信號作成部106。細胞資訊信號作成部106亦可以該通知將細胞號碼、終端號碼及槽號碼改寫為CoMP專用之各號碼。又，由於細胞資訊信號作成部106以細胞資訊發送至從基地台100-2，故從基地台100-2亦可作成與主基地台100-1相同之擾碼。Furthermore, in the above embodiments, the cell number, the terminal number, and the slot number used for CoMP transmission can also be used as a cell number, a terminal number, and a slot number for CoMP. For example, the control unit 108 of the master base station 100-1 determines the execution time of the CoMP transmission (S31), and outputs the notification to the cell information signal creation unit 106. The cell information signal creation unit 106 may also rewrite the cell number, the terminal number, and the slot number to each number dedicated to CoMP. Further, since the cell information signal creation unit 106 transmits the cell information to the slave base station 100-2, the base station 100-2 can also create the same scrambling code as the master base station 100-1.
再者，上述各實施例就在2個基地台100-1、100-2與終端機200間進行CoMP發送之例作了說明。亦可在例如3個以上之基地台100與終端機200間執行CoMP發送。此時，3個以上之基地台中任一個為主基地台，其他基地台為從基地台，與上述各實施例同樣地，可藉從主基地台將細胞資訊發送至複數個從基地台來執行。Furthermore, the above embodiments have described an example in which CoMP transmission is performed between two base stations 100-1 and 100-2 and the terminal 200. CoMP transmission can also be performed between, for example, three or more base stations 100 and the terminal 200. At this time, any one of the three or more base stations is the primary base station, and the other base stations are the slave base stations. Similarly to the above embodiments, the cellular information can be transmitted from the primary base station to a plurality of slave base stations. .
10．．．無線通訊系統10. . . Wireless communication system
100．．．基地台100. . . Base station
100-1．．．主基地台100-1. . . Main base station
100-2．．．從基地台100-2. . . Base station
101．．．天線101. . . antenna
101-1．．．天線101-1. . . antenna
101-2．．．天線101-2. . . antenna
102．．．接收無線部102. . . Receiving wireless department
103．．．解調解碼部103. . . Demodulation and decoding unit
104．．．連接要求信號抽出部104. . . Connection request signal extraction unit
105．．．無線線路控制部105. . . Wireless line control department
106．．．細胞資訊信號作成部106. . . Cell information signal making department
107．．．CoMP通訊要求信號抽出部107. . . CoMP communication requires signal extraction
108．．．CoMP通訊執行判定及控制部108. . . CoMP communication execution determination and control department
109．．．無線線路品質資訊抽出部109. . . Wireless line quality information extraction department
110．．．排程器110. . . Scheduler
111．．．控制信號作成部111. . . Control signal generation unit
112．．．擾碼作成部112. . . Scrambling code making department
112-1．．．第1暫存器112-1. . . 1st register
112-2．．．第1排他性邏輯和電路112-2. . . 1st exclusive logic and circuit
112-3．．．第2暫存器112-3. . . 2nd register
112-4．．．第2排他性邏輯和電路112-4. . . 2nd exclusive logic and circuit
112-5．．．第3排他性邏輯和電路112-5. . . 3rd exclusive logic and circuit
113．．．發送資料緩衝器113. . . Send data buffer
114．．．編碼調變部114. . . Code modulation department
115．．．發送無線部115. . . Send wireless department
121．．．無線線路品質測量及算出部121. . . Wireless line quality measurement and calculation unit
150-1．．．主通訊部150-1. . . Main communication department
150-2．．．從通訊部150-2. . . From the Ministry of Communications
200．．．終端機200. . . Terminal
201．．．天線201. . . antenna
202．．．接收無線部202. . . Receiving wireless department
203．．．解調解碼部203. . . Demodulation and decoding unit
204．．．無線線路品質測量及算出部204. . . Wireless line quality measurement and calculation unit
205．．．無線線路品質資訊作成部205. . . Wireless line quality information creation department
206．．．細胞資訊抽出部206. . . Cell information extraction department
207．．．擾碼作成部207. . . Scrambling code making department
208．．．接收控制信號抽出部208. . . Receiving control signal extraction unit
209．．．終端機設定控制部209. . . Terminal setting control unit
210．．．接收電力測量部210. . . Receiving power measurement department
211．．．線路連接控制部211. . . Line connection control
212．．．連接要求信號作成部212. . . Connection request signal making section
213．．．編碼調變部213. . . Code modulation department
214．．．發送無線部214. . . Send wireless department
220．．．CoMP通訊控制部220. . . CoMP Communication Control Department
221．．．CoMP通訊要求信號作成部221. . . CoMP communication requires signal generation department
S10~S46．．．步驟S10~S46. . . step
S50~S64．．．步驟S50~S64. . . step
第1圖係顯示無線通訊系統之結構例的圖。Fig. 1 is a view showing a configuration example of a wireless communication system.
第2圖係顯示下行方向之無線通訊系統之結構例的圖。Fig. 2 is a view showing a configuration example of a wireless communication system in the downstream direction.
第3圖係顯示主基地台裝置之結構例的圖。Fig. 3 is a view showing a configuration example of a main base station device.
第4圖係顯示從基地裝置之結構例的圖。Fig. 4 is a view showing a configuration example of a slave base device.
第5圖係顯示終端裝置之結構例的圖。Fig. 5 is a view showing a configuration example of a terminal device.
第6圖係顯示擾碼作成部之結構例的圖。Fig. 6 is a view showing a configuration example of a scrambling code creation unit.
第7圖係顯示動作例之流程圖。Fig. 7 is a flow chart showing an example of the operation.
第8圖係顯示動作例之流程圖。Fig. 8 is a flow chart showing an example of the operation.
第9圖係顯示上行方向之無線通訊系統之結構例的圖Figure 9 is a diagram showing a configuration example of a wireless communication system in an uplink direction.
第10圖係顯示主基地台裝置之結構例的圖。Fig. 10 is a view showing a configuration example of a main base station device.
第11圖係顯示從基地台裝置之結構例的圖。Fig. 11 is a view showing an example of the configuration of the slave base station apparatus.
第12圖係顯示終端裝置之結構例的圖。Fig. 12 is a view showing a configuration example of a terminal device.
第13圖係顯示動作例之流程圖。Figure 13 is a flow chart showing an example of the operation.
第14圖係顯示動作例之流程圖。Fig. 14 is a flow chart showing an example of the operation.
第15圖係顯示終端裝置之結構例的圖。Fig. 15 is a view showing a configuration example of a terminal device.
第16圖係顯示終端裝置之結構例的圖。Fig. 16 is a view showing a configuration example of a terminal device.
第17圖係顯示基地台裝置之結構例的圖。Fig. 17 is a view showing a configuration example of a base station device.
100-1．．．主基地台100-1. . . Main base station
102．．．接收無線部102. . . Receiving wireless department
103．．．解調解碼部103. . . Demodulation and decoding unit
104．．．連接要求信號抽出部104. . . Connection request signal extraction unit
105．．．無線線路控制部105. . . Wireless line control department
106．．．細胞資訊信號作成部106. . . Cell information signal making department
107．．．CoMP通訊要求信號抽出部107. . . CoMP communication requires signal extraction
108．．．CoMP通訊執行判定及控制部108. . . CoMP communication execution determination and control department
109．．．無線線路品質資訊抽出部109. . . Wireless line quality information extraction department
110．．．排程器110. . . Scheduler
111．．．控制信號作成部111. . . Control signal generation unit
112．．．擾碼作成部112. . . Scrambling code making department
113．．．發送資料緩衝器113. . . Send data buffer
114．．．編碼調變部114. . . Code modulation department
115．．．發送無線部115. . . Send wireless department
Claims (15)
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| TW98120018A TWI383608B (en) | 2009-06-15 | 2009-06-15 | Radio communication system, base station apparatus, terminal apparatus, and radio communication method in radio communication system |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1868394A1 (en) * | 2005-03-31 | 2007-12-19 | NTT DoCoMo Inc. | Controller, mobile station, mobile communication system and control method |
| WO2008053932A1 (en) * | 2006-10-31 | 2008-05-08 | Kddi Corporation | Radio base station apparatus and radio terminal apparatus |
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2009
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1868394A1 (en) * | 2005-03-31 | 2007-12-19 | NTT DoCoMo Inc. | Controller, mobile station, mobile communication system and control method |
| WO2008053932A1 (en) * | 2006-10-31 | 2008-05-08 | Kddi Corporation | Radio base station apparatus and radio terminal apparatus |
Non-Patent Citations (2)
| Title |
|---|
| LG Electronics,"Consideration on CoMP in LTE-Advanced," R1-084203, 3GPP TSG-RAN WG1, November 10, 2008. * |
| Nortel,"Cell Clustering for CoMP Transmission/REception," R1-084464, 3GPP TSG-RAN WG1, November 10, 2008 * |
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| TW201044808A (en) | 2010-12-16 |
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