TWI419495B - Method,user equipment, and base station for setting precoder in open loop mimo system - Google Patents

Method,user equipment, and base station for setting precoder in open loop mimo system Download PDF

Info

Publication number
TWI419495B
TWI419495B TW099113969A TW99113969A TWI419495B TW I419495 B TWI419495 B TW I419495B TW 099113969 A TW099113969 A TW 099113969A TW 99113969 A TW99113969 A TW 99113969A TW I419495 B TWI419495 B TW I419495B
Authority
TW
Taiwan
Prior art keywords
mode
user equipment
resource
mimo
base station
Prior art date
Application number
TW099113969A
Other languages
Chinese (zh)
Other versions
TW201126945A (en
Inventor
Wook Bong Lee
Hyun Soo Ko
Moon Il Lee
Bin Chul Ihm
Original Assignee
Lg Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lg Electronics Inc filed Critical Lg Electronics Inc
Publication of TW201126945A publication Critical patent/TW201126945A/en
Application granted granted Critical
Publication of TWI419495B publication Critical patent/TWI419495B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

用於設定開迴路MIMO系統的預編碼器之方法、使用者裝備及基地台Method, user equipment and base station for setting a precoder of an open loop MIMO system

本發明主張韓國專利申請案案號10-2009-0067708，於2009年7月24日提出申請的權益，其在此處如整體已敘述而併入作為參考。The present invention claims the benefit of the Korean Patent Application No. 10-2009-0 067 708, filed on July 24, 2009, which is hereby incorporated by reference in its entirety.

本發明亦主張美國臨時申請案案號61/173,983，於2009年4月30日提出申請的權益，其在此處如整體已敘述而併入作為參考。The present invention also claims the benefit of the filing of the application in the U.S. Provisional Application Serial No. 61/173,983, filed on Apr. 30, 2009, which is incorporated herein by reference in its entirety.

本發明係關於一蜂巢式系統(cellular system)，且更特定而言，係關於一種在一開迴路多輸入多輸出(MIMO)系統中用於設定一預編碼器的方法。The present invention relates to a cellular system and, more particularly, to a method for setting a precoder in an open loop multiple input multiple output (MIMO) system.

首先，此處將簡述本發明所應用的多輸入多輸出(MIMO)技術。First, the multiple input multiple output (MIMO) technique to which the present invention is applied will be briefly described herein.

MIMO方案是指使用多個傳送天線及多個接收天線的一方案，以便改善資料傳送/接收的效率，與使用一個傳送天線及一個接收天線的傳統方案有所區隔。即，在MIMO系統中，為了接收一個訊息，透過數個天線而非使用一單一天線路徑的收集及結合資料片段的技術被應用。根據MIMO技術，可在一特定範圍中改善資料傳輸率，或可增加相對於一特定資料傳輸率的一系統範圍。即，MIMO技術係為可被廣泛使用於一使用者裝備(UE)、一轉發器及類似用於行動通訊的下一代行動通訊技術。此技術吸引相當的注目，因資料通訊擴張而此技術能夠克服行動通訊的傳輸尺寸的限制。The MIMO scheme refers to a scheme in which a plurality of transmitting antennas and a plurality of receiving antennas are used in order to improve the efficiency of data transmission/reception, which is distinguished from a conventional scheme using one transmitting antenna and one receiving antenna. That is, in a MIMO system, in order to receive a message, a technique of collecting and combining pieces of data through a plurality of antennas instead of using a single antenna path is applied. According to the MIMO technology, the data transmission rate can be improved in a specific range, or a system range relative to a specific data transmission rate can be increased. That is, MIMO technology is a next-generation mobile communication technology that can be widely used in a user equipment (UE), a repeater, and the like for mobile communication. This technology attracts considerable attention, and this technology can overcome the limitation of the transmission size of mobile communication due to the expansion of data communication.

第1圖係一圖式顯示一般MIMO系統的配置。Figure 1 is a diagram showing the configuration of a general MIMO system.

如第1圖中所顯示，若傳送器的數量及接收器的數量同時增加，頻道傳輸容量理論上與天線的數量成正比的增加，而與多天線被用於僅一個傳送器或接收器的情況有所區隔。因此，頻率效率顯著的改善。As shown in Figure 1, if the number of transmitters and the number of receivers increase simultaneously, the channel transmission capacity is theoretically proportional to the number of antennas, and multiple antennas are used for only one transmitter or receiver. The situation is different. Therefore, the frequency efficiency is significantly improved.

在MIMO系統的理論容量增加於90年代中期得到印證之後，已積極進行能夠實質上改善資料傳輸率的各種技術的研究直至今日。其中，已經應用一些技術於第三代行動通訊及一下一代無線區域網路(LAN)的各種無線通訊標準。After the theoretical capacity increase of the MIMO system was confirmed in the mid-1990s, research on various technologies capable of substantially improving the data transmission rate has been actively conducted until today. Among them, some technologies have been applied to third-generation mobile communication and a variety of wireless communication standards for a next-generation wireless local area network (LAN).

與MIMO技術相關聯的各種研究，例如在各種頻道環境及多個存取環境中與MIMO通訊容量消耗相關聯的資訊理論上的研究、無線電頻道量測及MIMO系統的模型推導上的研究、及用於改善一傳輸率及改善傳送可靠度的空間-時間訊號處理技術上的研究已被積極進行著。Various studies related to MIMO technology, such as theoretical research on information related to MIMO communication capacity consumption in various channel environments and multiple access environments, research on radio channel measurements, and model derivation of MIMO systems, and Research on space-time signal processing techniques for improving a transmission rate and improving transmission reliability has been actively conducted.

MIMO技術可被劃分為一空間分集方案，其使用通過各種頻道路徑的相同符號而用於增加傳送可靠度，及一空間多工方案，其使用多個傳送天線而用於同時傳送多個不同資料符號，以便改善傳輸率。此外，最近已進行一種充分結合此等方案以便獲得分別的優點的方法。MIMO technology can be divided into a spatial diversity scheme that uses the same symbols across various channel paths for increased transmission reliability, and a spatial multiplexing scheme that uses multiple transmit antennas for simultaneous transmission of multiple different data. Symbol to improve the transmission rate. Moreover, a method of fully combining these schemes to obtain respective advantages has recently been conducted.

一般而言，在允許一MIMO模式的一系統中，因為已添加空間資源，MIMO模式取決於空間資源如何被分配而被劃分為一單一使用者MIMO(SU-MIMO)模式及一多使用者MIMO(MU-MIMO)模式。In general, in a system that allows a MIMO mode, since spatial resources have been added, the MIMO mode is divided into a single user MIMO (SU-MIMO) mode and a multi-user MIMO depending on how spatial resources are allocated. (MU-MIMO) mode.

第2圖係一圖式顯示一傳送器的一下行鏈路MIMO系統的構造。如第2圖中所顯示，一MIMO編碼器201將L(1)階層映射至Mt (L)串流。該等串流被輸入至一預編碼器202。藉由編碼及調變路徑所定義的階層被輸入至MIMO編碼器201。此外，串流係藉由通過預編碼器202的MIMO編碼器201的一輸出而定義。Figure 2 is a diagram showing the construction of a downlink MIMO system of a transmitter. As shown in Figure 2, a MIMO encoder 201 will L ( 1) Hierarchy mapping to M t ( L) Streaming. The streams are input to a precoder 202. The hierarchy defined by the coding and modulation paths is input to the MIMO encoder 201. In addition, the stream is defined by an output through the MIMO encoder 201 of the precoder 202.

預編碼器202根據一所選擇的MIMO模式產生特定天線資料符號，以便將串流映射至天線。Precoder 202 generates a particular antenna data symbol based on a selected MIMO mode to map the stream to the antenna.

一次載波映射器203將特定天線資料映射至OFDM符號。The primary carrier mapper 203 maps specific antenna data to OFDM symbols.

將階層映射至串流係藉由MIMO編碼器201實行。MIMO編碼器201係同時處理M個輸入符號的一批次處理器。至MIMO編碼器201的輸入可藉由如等式1中所顯示的一M×1向量而表示。Mapping the hierarchy to the stream is performed by the MIMO encoder 201. The MIMO encoder 201 is a batch processor that processes M input symbols simultaneously. The input to the MIMO encoder 201 can be represented by an M x 1 vector as shown in Equation 1.

在等式1中，Si 代表在一個批次處理中的第i個輸入符號。輸入符號的階層至串流的映射在一空間域中實行。In Equation 1, S i represents the ith input symbol in a batch process. The hierarchical-to-stream mapping of the input symbols is performed in a spatial domain.

首先，MIMO編碼器201的輸出可由等式2中所顯示的一Mt ×NF MIMO空間時間編碼(STC)矩陣而表示。First, the output of the MIMO encoder 201 can be represented by a M t × N F MIMO spatial time coding (STC) matrix as shown in Equation 2.

等式2Equation 2

x =S (s ) x = S ( s )

此時，Mt 代表串流的數量，且NF代表由一個MIMO區塊所佔據的次載波的數量。x代表MIMO編碼器201的輸出，S代表一輸出階層向量，且S(s)代表一STC矩陣。At this time, M t represents the number of streams, and NF represents the number of secondary carriers occupied by one MIMO block. x represents the output of the MIMO encoder 201, S represents an output hierarchical vector, and S(s) represents an STC matrix.

此外，x藉由等式3中所顯示的一矩陣而表示。Further, x is represented by a matrix shown in Equation 3.

在一SU-MIMO傳送中，一STC率由等式4定義。In a SU-MIMO transmission, an STC rate is defined by Equation 4.

在一MU-MIMO傳送中，每一階層的一STC率係為1。In a MU-MIMO transmission, an STC rate of each level is one.

如MIMO編碼器210的形式，可使用空間頻率區塊碼(SFBC)編碼、垂直編碼(VE)及水平編碼(HE)。As in the form of MIMO encoder 210, spatial frequency block coding (SFBC) coding, vertical coding (VE), and horizontal coding (HE) may be used.

在SFBC編碼中，對MIMO編碼器201的輸入可由等式5中所顯示的一2×1向量表示。In SFBC coding, the input to MIMO encoder 201 can be represented by a 2x1 vector shown in Equation 5.

等式5Equation 5

MIMO編碼器201產生顯示於等式6中的一SFBC矩陣。The MIMO encoder 201 generates an SFBC matrix shown in Equation 6.

此時，x代表一2×2矩陣，且一SFBC矩陣x佔據兩個連續次載波。At this time, x represents a 2×2 matrix, and one SFBC matrix x occupies two consecutive subcarriers.

在VE中，MIMO編碼器201的輸入及輸出係藉由等式7中所顯示的一M×1向量表示。In VE, the input and output of MIMO encoder 201 are represented by an M x 1 vector shown in Equation 7.

此時，si 代表在一個批次處理中的第i個輸入符號，且s1 ...sM 屬於相對於VE的相同階層。At this time, s i represents the i-th input symbol in one batch process, and s 1 ... s M belong to the same hierarchy with respect to VE.

在HE中，MIMO編碼器201的輸入及輸出係藉由等式8中所顯示的一M×1向量表示。In the HE, the input and output of the MIMO encoder 201 are represented by an M x 1 vector shown in Equation 8.

此時，si 代表在一個批次處理中的第i個輸入符號，且s1 ...sM 屬於相對於HE的不同階層。At this time, s i represents the i-th input symbol in one batch process, and s 1 ... s M belong to different levels with respect to HE.

現在將詳細敘述一種將串流映射至天線的方法。A method of mapping a stream to an antenna will now be described in detail.

串流至天線的映射係藉由預編碼器202實行。MIMO編碼器201的輸出係乘以Nt ×Mt 預編碼器的W。預編碼器的輸出係藉由一Nt ×NF 矩陣z而表示。將串流映射至天線的方法由等式9表示。The mapping of the stream to the antenna is performed by the precoder 202. The output of the MIMO encoder 201 is multiplied by W of the N t × M t precoder. The output of the precoder is represented by an N t × N F matrix z. The method of mapping a stream to an antenna is represented by Equation 9.

此時，Nt 代表傳送天線的數量，且zj,k 代表在第k個次載波上透過第j個實體天線所傳送的一輸出符號。At this time, N t represents the number of transmitting antennas, and z j,k represents an output symbol transmitted through the jth physical antenna on the kth secondary carrier.

可應用的預編碼方法包括一非適應性預編碼方法及一適應性預編碼方法。Applicable precoding methods include a non-adaptive precoding method and an adaptive precoding method.

在非適應性預編碼方法中，一預編碼矩陣係一Nt ×Mt 矩陣W(k)。此時，Nt 代表傳送天線的數量、Mt 代表串流的數量、且k代表W(k)所應用的一次載波的一實體指數。矩陣W從一預編碼器的一子集選擇，其對一給定的秩具有一基本編碼簿尺寸Nw 。根據等式10，矩陣W於N1 PSC 連續實體次載波的一間隔改變，且矩陣W不依附於次訊框的數量。應用至一次載波k的Nt ×Mt 預編碼矩陣W(k)選自一秩Mt 的開迴路編碼簿子集作為一指數i的一碼字。此時，i由等式10給定。In the non-adaptive precoding method, a precoding matrix is a N t × M t matrix W(k). At this time, N t represents the number of transmitting antennas, M t represents the number of streams, and k represents a physical index of the primary carrier to which W(k) is applied. A selection matrix W subset from a precoder having a basic codebook size N w of a given rank. According to Equation 10, the matrix W changes at an interval of the N 1 P SC contiguous physical subcarriers, and the matrix W does not depend on the number of subframes. The N t × M t precoding matrix W(k) applied to the primary carrier k is selected from a subset of the open loop codebook of a rank M t as a codeword of an index i. At this time, i is given by Equation 10.

等式10Equation 10

在一開迴路範圍中，除了對DC次載波及保護次載波之外，矩陣W於N1 PSC 連續實體次載波的一間隔被改變。N的一預設值係為N1 ，N2 係非必須的，且N2 的使用不需要額外發訊號。In an open loop range, in addition to the DC secondary carrier and the guard secondary carrier, the interval of the matrix W at the N 1 P SC contiguous physical secondary carrier is changed. A preset value of N is N 1 , N 2 is not required, and the use of N 2 does not require an additional signal.

反之，在適應性預編碼方法中，從一UE的回饋獲得矩陣。On the contrary, in the adaptive precoding method, the matrix is obtained from the feedback of one UE.

基於編碼簿的預編碼(編碼簿回饋)包括三個回饋模式，即，一基本模式、一適應性模式、及一差動模式。The codebook based precoding (codebook feedback) includes three feedback modes, namely, a basic mode, an adaptive mode, and a differential mode.

在分時雙工(TDD)基於聲音的預編碼中，矩陣W的值從UE的聲音回饋獲得。可呈現數個下行鏈路MIMO模式且顯示於表1中。In time division duplex (TDD) sound based precoding, the value of the matrix W is obtained from the UE's sound feedback. Several downlink MIMO modes can be presented and are shown in Table 1.

在SU-MIMO中，一個資源單元(RU)被分配到一個使用者，且一個前向誤差修正(FEC)區塊被呈現於MIMO編碼器210的一輸入端中(此與一傳送器中的垂直MIMO編碼相對應)。在垂直MIMO編碼中，透過數個天線所傳送的所有資料串流產生自一個使用者資訊位元，以便通過相同的FEC區塊。In SU-MIMO, one resource unit (RU) is assigned to one user, and a forward error correction (FEC) block is presented in an input of the MIMO encoder 210 (this is in a transmitter) Vertical MIMO encoding corresponds). In vertical MIMO encoding, all data streams transmitted through several antennas are generated from a user information bit to pass the same FEC block.

同時，在MU-MIMO中，一個RU可被分配到多個使用者，且多個FEC區塊被呈現於MIMO編碼器201的一輸入端中(此與水平MIMO編碼相對應)。在水平MIMO編碼中，透過數個天線所傳送的不同符號產生自不同資訊位元，以便通過不同FEC區塊及調變區塊。Meanwhile, in MU-MIMO, one RU can be allocated to multiple users, and multiple FEC blocks are presented in one input of the MIMO encoder 201 (this corresponds to horizontal MIMO encoding). In horizontal MIMO coding, different symbols transmitted through several antennas are generated from different information bits to pass through different FEC blocks and modulation blocks.

一般而言，若使用者的數量少，則SU-MIMO性能係為良好，且若使用者的數量龐大，則MU-MIMO性能係為良好。SU-MIMO及MU-MIMO之各者被劃分為閉迴路MIMO(CL-MIMO)及開迴路MIMO(OL-MIMO)。儘管MIMO技術基於關於CL-MIMO技術中的一UE及一基地台之間所建立的一頻道的狀態的資訊而被應用，當因為於OL-MIMO技術中的一高速動作所以存在回饋資訊中的一限制時，為了分集增益的目的而應用MIMO技術。In general, if the number of users is small, the SU-MIMO performance is good, and if the number of users is large, the MU-MIMO performance is good. Each of SU-MIMO and MU-MIMO is classified into closed loop MIMO (CL-MIMO) and open loop MIMO (OL-MIMO). Although the MIMO technology is applied based on information about the state of a channel established between a UE and a base station in the CL-MIMO technology, there is feedback information in the feedback information due to a high-speed action in the OL-MIMO technology. When a limitation is made, MIMO technology is applied for the purpose of diversity gain.

Ieee 802.16m的子頻道化包括兩個模式。第一者係一區域模式，其中一般使用一子頻帶鄰接資源單元(CRU)，且第二者係一分集模式，其中一般使用一分散資源單元(DRU)。一迷你頻帶CRU可被用於區域及分集模式兩者中。Sub-channelization of Ieee 802.16m includes two modes. The first is a regional mode in which a sub-band contiguous resource unit (CRU) is typically used, and the second is a diversity mode in which a decentralized resource unit (DRU) is typically used. A mini-band CRU can be used in both regional and diversity modes.

雖然子頻道化包括數個模式，傳統上，使用預編碼矩陣W而不分模式。因為未考慮到根據模式所分配的資源的特徵而使用一通用預編碼矩陣，所以一預編碼矩陣的各模式可能無法改善。Although subchannelization includes several modes, traditionally, a precoding matrix is used without dividing the mode. Since a general precoding matrix is not considered in consideration of the characteristics of the resources allocated according to the mode, the modes of a precoding matrix may not be improved.

因此，本發明導向一種在一開迴路MIMO系統中用於設定一預編碼器的方法，其因相關前案的限制及缺點實質上排除一或多個問題。Accordingly, the present invention is directed to a method for setting a precoder in an open loop MIMO system that substantially obviates one or more problems due to limitations and disadvantages of the related prior.

本發明的一態樣係根據經分配資源的類型提供一優化的預編碼矩陣的應用。One aspect of the present invention provides an application of an optimized precoding matrix based on the type of allocated resources.

本發明的額外的益處、態樣、及特徵將部份於以下說明書中提出，且部份對技藝人士而言，在對以下做審查或可從執行本發明而習得之後，係為顯而易見的。本發明的目標及其他益處可藉由此處書面的說明書及申請專利範圍以及隨附的圖示中特定點出的結構而瞭解且知悉。Additional benefits, aspects, and features of the invention will be set forth in part in the description which follows. The objectives and other benefits of the present invention will be understood and appreciated by the written description and the appended claims.

為了達到此等態樣及其他益處且根據本發明的目的，如此處所利用且廣泛的敘述，一種在一開迴路多輸入多輸出(MIMO)系統中的一使用者裝備的回饋方法包括：從一基地台接收根據將被用於實行回饋的資源的類型所決定的多個模式之一者；及從一編碼簿子集選擇與該所接收的模式相對應的一預編碼矩陣，應用該所選擇的預編碼矩陣，且傳送回饋資訊，其中不同的編碼簿子集係相對於該多個模式而配置，且該編碼簿子集係藉由從一基本編碼簿基於考慮到該等模式的該等特徵的一預先決定準則，提取一預先決定數量的元素而配置。In order to achieve such aspects and other benefits and in accordance with the purpose of the present invention, as used herein and broadly described, a user equipment feedback method in an open loop multiple input multiple output (MIMO) system includes: The base station receives one of a plurality of modes determined according to a type of resource to be used for performing the feedback; and selecting a precoding matrix corresponding to the received pattern from a subset of the codebook, applying the selected Precoding the matrix and transmitting feedback information, wherein different subsets of codebooks are configured relative to the plurality of modes, and the subset of codebooks is based on one of the features that take into account the patterns from a basic codebook The criteria are predetermined and extracted by extracting a predetermined number of elements.

在本發明的另一態樣中，一種在一開迴路多輸入多輸出(MIMO)系統中對一使用者裝備分配資源的方法包括：當該使用者裝備傳送回饋資訊時，在一基地台通知該使用者裝備多個模式之一者，該等模式指示將使用的資源的類型；接收該回饋資訊，其中從一編碼簿子集所選擇的對應該經通知的模式的一預編碼矩陣被應用至該回饋資訊；及使用該所接收的回饋資訊分配該等資源至該使用者裝備，其中不同的編碼簿子集係相對於該多個模式而配置，及該編碼簿子集係藉由從一基本編碼簿基於考慮到該等模式的該等特徵的一預先決定準則，提取一預先決定數量的元素而配置。In another aspect of the present invention, a method for allocating resources to a user equipment in an open loop multiple input multiple output (MIMO) system includes: notifying a base station when the user equipment transmits feedback information The user is equipped with one of a plurality of modes indicating the type of resource to be used; receiving the feedback information, wherein a precoding matrix selected from a subset of the codebook corresponding to the notified mode is applied to The feedback information; and using the received feedback information to allocate the resources to the user equipment, wherein different codebook subsets are configured relative to the plurality of modes, and the codebook subset is obtained from a basic code The book is configured based on a predetermined criterion that takes into account the characteristics of the patterns, extracting a predetermined number of elements.

在本發明的另一態樣中，一種在一開迴路多輸入多輸出(MIMO)系統中用於傳送回饋資訊的使用者裝備包括：一接收單元，經配置成從一基地台接收根據將被用於實行回饋的資源的類型所決定的多個模式之一者；一處理單元，經配置成從一編碼簿子集選擇與該所接收的模式相對應的一預編碼矩陣，應用該所選擇的預編碼矩陣，且產生該回饋資訊；及一傳送單元，經配置成傳送該所產生的回饋資訊，其中該接收單元、該處理單元及該傳送單元選擇性的連接，不同編碼簿子集係相對於該多個模式而配置，且該編碼簿子集係藉由從一基本編碼簿基於考慮到該等模式的該等特徵的一預先決定準則，提取一預先決定數量的元素而配置。In another aspect of the present invention, a user equipment for transmitting feedback information in an open loop multiple input multiple output (MIMO) system includes: a receiving unit configured to receive from a base station according to One of a plurality of modes determined by the type of resources used to implement the feedback; a processing unit configured to select a precoding matrix corresponding to the received pattern from a subset of codebooks, applying the selected a precoding matrix, and generating the feedback information; and a transmitting unit configured to transmit the generated feedback information, wherein the receiving unit, the processing unit, and the transmitting unit are selectively connected, and different encoding book subsets are relative to The plurality of modes are configured, and the codebook subset is configured by extracting a predetermined number of elements from a basic codebook based on a predetermined criterion that takes into account the features of the modes.

該多個模式可包括一區域模式及一分集模式，當在該區域模式中傳送時，一子頻帶鄰接資源單元(CRU)即可被用作一邏輯資源單元，及當在該分集模式中傳送時，一分散資源單元(DRU)或基於迷你頻帶的CRU即可被用作一邏輯資源單元。The plurality of modes may include an area mode and a diversity mode, and when transmitted in the area mode, a sub-band adjacent resource unit (CRU) may be used as a logical resource unit, and when transmitted in the diversity mode A decentralized resource unit (DRU) or a mini-band based CRU can be used as a logical resource unit.

對應該區域模式的一編碼簿子集可藉由從該基本編碼簿提取一預先決定數量的元素而配置，該等元素滿足恆定模數特徵。A subset of codebooks corresponding to the region pattern can be configured by extracting a predetermined number of elements from the base codebook, the elements satisfying a constant modulus feature.

對應該分集模式的一編碼簿可藉由從該基本編碼簿提取一預先決定數量的元素而配置，該等元素用於最大化一弦距。An codebook corresponding to the diversity mode can be configured by extracting a predetermined number of elements from the base codebook, the elements being used to maximize a chord.

根據本發明，系統性能可藉由根據經分配的資源的類型的一優化預編碼器而改善。In accordance with the present invention, system performance can be improved by an optimized precoder based on the type of resource being allocated.

應瞭解本發明的以上一般說明及以下詳細說明係為範例及解釋性的，且欲提供如所主張本發明進一步的解釋。The above general description and the following detailed description of the invention are intended to be illustrative and

現在將詳細參考本發明的較佳實施例，其範例於隨附圖式中圖示說明。Reference will now be made in detail to the preferred embodiments embodiments

以下實施例根據一預先決定的形式係藉由結合本發明的構成組件及特徵而提出。個別的構成組件或特徵在無額外註解的條件下應被考慮為非必須的因素。若需要，個別構成組件或特徵不可與其他組件或特徵結合。而且，某些構成組件及/或特徵可被結合以執行本發明的實施例。本發明的實施例所揭示的操作順序可經安排。任何實施例的某些組件或特徵亦可被包括於其他實施例，或於必要時可被其他實施例取代。The following embodiments are presented in terms of a predetermined form by combining the components and features of the present invention. Individual constituent components or features should be considered as non-essential factors without additional annotation. Individual constituent components or features may not be combined with other components or features, if desired. Moreover, certain constituent components and/or features may be combined to carry out embodiments of the invention. The sequence of operations disclosed in the embodiments of the present invention may be arranged. Certain components or features of any embodiment may be included in other embodiments or may be substituted by other embodiments as appropriate.

在圖示的說明中，使得本發明的範疇變得非必要的模糊的程序或步驟將被省略，且可由技藝人士瞭解的程序或步驟將被省略。In the description of the figures, procedures or steps that obscure the scope of the invention are not necessary, and the procedures or steps that are known to those skilled in the art will be omitted.

應瞭解本發明中所揭示的特定術語為了說明的方便及對本發明更加的理解而提出，且此等特定術語的使用可改變為在本發明的技術範疇或精神中的另一形式。It is to be understood that the specific terminology of the invention is set forth in the description

首先，將說明用於一無線行動通訊系統中的資源。First, resources for use in a wireless mobile communication system will be explained.

在無線行動通訊系統中，一般而言，資源被劃分為一第一分區及一第二分區。第一分區適合用於依據頻率係藉由分散分配於一實際實體帶的資源而獲得分集。第二分區係對依據頻率係藉由安排資源連續性而具有一相對較良好的頻道的一使用者有益處。In a wireless mobile communication system, in general, resources are divided into a first partition and a second partition. The first partition is adapted to obtain diversity by distributing resources allocated to an actual physical band according to frequency. The second partition is beneficial to a user who has a relatively good channel by arranging resource continuity depending on the frequency.

例如一實際範例，在IEEE 802.16e的情況中，前者提供作為次頻道的部份使用(PUSC)或次頻道的全部使用(FUSC)，且後者作為一頻帶適應性調變及編碼方案(AMC)。For example, in a practical example, in the case of IEEE 802.16e, the former provides partial use (PUSC) or sub-channel use (FUSC) as a secondary channel, and the latter acts as a band adaptive modulation and coding scheme (AMC). .

同時，在IEEE 802.16m的情況中，前者係藉由一分散資源單元(DRU)劃分，且後者係藉由一鄰接資源單元(CRU)劃分，其兩者可同時存在於一個次訊框中。一實體資源單元(PRU)係用於資源分配的一基本實體單元，且一邏輯資源單元(LRU)係一基本邏輯單元。DRU及CRU屬於LRU。DRU包括一次載波群組，其在一頻率分隔中散佈於分散資源分配帶。CRU包括在所有資源分配帶中鄰接次載波的一群組。Meanwhile, in the case of IEEE 802.16m, the former is divided by a decentralized resource unit (DRU), and the latter is divided by a contiguous resource unit (CRU), both of which can exist in one subframe at the same time. A physical resource unit (PRU) is a basic physical unit for resource allocation, and a logical resource unit (LRU) is a basic logical unit. DRU and CRU belong to LRU. The DRU includes a primary carrier group that is interspersed among the dispersed resource allocation bands in a frequency separation. The CRU includes a group of adjacent subcarriers in all resource allocation bands.

第3圖係一圖式說明將PRUs映射至LRUs的一程序。Figure 3 is a diagram illustrating a procedure for mapping PRUs to LRUs.

以下，將參照第3圖說明將PRUs映射至LRUs的程序。Hereinafter, a procedure for mapping PRUs to LRUs will be described with reference to FIG.

如第3圖所顯示，首先，PRUs被劃分為基於子頻帶的PRUs及基於迷你頻帶的PRUs。在第3圖中，基於子頻帶的PRU係藉由PRUSB 代表且基於迷你頻帶的PRU係藉由PRUMB 代表。PRUSB 適合用於頻率選擇分配，因為PRUs被連續的分配在一頻率軸上。此外，PRUMB 適合用於頻率分集分配且排列於一頻率軸上。As shown in FIG. 3, first, PRUs are divided into sub-band based PRUs and mini band based PRUs. In FIG. 3, the sub-band based PRU is represented by the PRU SB and the mini band based PRU is represented by the PRU MB . PRU SB is suitable for frequency selective allocation because PRUs are continuously assigned on a frequency axis. In addition, the PRU MB is suitable for frequency diversity allocation and is arranged on a frequency axis.

PRUSB 被映射至CRU，且映射至PRUSB 的CRU被定義為一基於子頻帶的CRU。PRUMB 透過一排列程序(在第3圖中，經排列的PRUMB 由PPRUMB 代表)映射至DRU。此時，某些PPRUMB 被映射至CRU，且映射至PPRUMB 的CRU被定義為一基於迷你頻帶的CRU。The PRU SB is mapped to the CRU, and the CRU mapped to the PRU SB is defined as a sub-band based CRU. The PRU MB is mapped to the DRU through an arrangement procedure (in Figure 3, the aligned PRU MB is represented by PPRU MB ). At this time, some PPRU MBs are mapped to CRUs, and CRUs mapped to PPRU MBs are defined as a miniband-based CRU.

此外，一資源帶實際上被分配至對應基於子頻帶的CRU、基於迷你頻帶的CRU或DRU之任何一者的一UE。在一迅速移動UE的情況中，因為頻道狀態迅速的改變，資源使用DRU或基於迷你頻帶的CRU而分配至UE係為有益處的。因此，在此情況中，資源使用DRU或基於迷你頻帶的CRU而分配至UE係為較佳的。在一UE位於一頻道狀態良好且緩慢的改變的環境的情況中，資源使用基於子頻帶的CRU而分配至UE係為較佳的。Further, a resource band is actually allocated to a UE corresponding to any one of a sub-band based CRU, a mini band based CRU, or a DRU. In the case of a rapidly moving UE, it is beneficial to allocate resources to the UE using DRU or mini-band based CRUs because of the rapid change in channel status. Therefore, in this case, it is preferable that the resource is allocated to the UE using the DRU or the mini-band based CRU. In the case where a UE is in an environment in which the channel state is good and slowly changing, it is preferable that the resources are allocated to the UE using the sub-band based CRU.

在IEEE 802.16m的情況中，子頻道化可被劃分為一區域模式及一分集模式。一般而言，基於子頻帶的CRU被分配且使用於區域模式，且DRU被分配且使用於分集模式。此外，迷你頻帶CRU可被使用於區域模式或分集模式中。即，所使用的資源的類型根據區域模式及分集模式而改變。再者，若多資源單元在基於迷你頻帶CRU的情況中被分配至UE，則一般應假設為一分集模式。因此，依據系統性能，不論模式而使用相同預編碼矩陣係為不佳的。In the case of IEEE 802.16m, subchannelization can be divided into an area mode and a diversity mode. In general, subband based CRUs are allocated and used in regional mode, and DRUs are allocated and used in diversity mode. In addition, the mini-band CRU can be used in an area mode or a diversity mode. That is, the type of resource used varies depending on the area mode and the diversity mode. Furthermore, if multiple resource elements are allocated to the UE in the case of mini-band CRUs, it should generally be assumed to be a diversity mode. Therefore, depending on system performance, using the same precoding matrix regardless of mode is not good.

本發明建議一種根據區域模式及分集模式而配置不同編碼簿子集的方法，以優化系統性能。The present invention proposes a method of configuring different subsets of codebooks according to regional mode and diversity mode to optimize system performance.

為了說明根據模式所優化的配置編碼簿子集的方法，假設C(Nt,Mt,Nw)代表一編碼簿，Nt代表傳送天線的數量、Mt代表串流的數量、且Nw代表編碼簿的碼字的數量。To illustrate the method of configuring the codebook subset optimized according to the mode, it is assumed that C(Nt, Mt, Nw) represents an codebook, Nt represents the number of transmit antennas, Mt represents the number of streams, and Nw represents the codeword of the codebook. quantity.

當用於區域模式中的一編碼簿係為C_localized(Nt,Mt,Nw1)，一頻道品質指標(CQI)或調變及編碼方案(MCS)級別可被設定在假設傳送使用C_localized(Nt,Mt,Nw1)及等式10而實行，或假設預編碼使用上述編碼簿而實行。此處，Nt代表傳送天線的數量、Mt代表串流的數量、且Nw1代表包括於編碼簿的此模式中用於預編碼矩陣的位元的數量。When a codebook used in the regional mode is C_localized (Nt, Mt, Nw1), a channel quality indicator (CQI) or modulation and coding scheme (MCS) level can be set to assume that the transmission uses C_localized (Nt, Mt). , Nw1) and Equation 10 are implemented, or it is assumed that precoding is performed using the above codebook. Here, Nt represents the number of transmit antennas, Mt represents the number of streams, and Nw1 represents the number of bits used for the precoding matrix in this mode of the codebook.

為了在區域模式中應用具有良好性能的一預編碼矩陣，使用於區域模式中的C_localized(Nt,Mt,Nw1)可藉由使用如一CL-MIMO基本編碼簿的相同編碼簿，或根據預先決定的準則從一CL-MIMO基本編碼簿提取一預編碼矩陣而配置。In order to apply a precoding matrix with good performance in the regional mode, C_localized(Nt, Mt, Nw1) used in the regional mode can be used by using the same codebook as a CL-MIMO basic codebook, or according to a predetermined The criteria are configured by extracting a precoding matrix from a CL-MIMO basic codebook.

此時，為了配置C_localized(Nt,Mt,Nw1)，作為從CL-MIMO編碼簿提取預編碼矩陣的準則，舉例而言，可使用從CL-MIMO基本編碼簿提取僅具有恆定模數特徵的元素的準則。At this time, in order to configure C_localized (Nt, Mt, Nw1), as a criterion for extracting a precoding matrix from the CL-MIMO codebook, for example, an element having only a constant modulus characteristic extracted from the CL-MIMO basic codebook can be used. Guidelines.

在分集模式中，一CQI或MCS級別可被設定在假設傳送使用C_diversity(Nt,Mt,Nw2)及等式10而實行，或假設預編碼使用此一方法而實行。此處，Nw2代表包括於編碼簿的此模式中的預編碼矩陣的位元的數量。Nw1及NW2可彼此不同。In the diversity mode, a CQI or MCS level can be set to assume that the transmission is performed using C_diversity (Nt, Mt, Nw2) and Equation 10, or that precoding is performed using this method. Here, Nw2 represents the number of bits of the precoding matrix included in this mode of the codebook. Nw1 and NW2 may be different from each other.

當假設u(Nt,M)係一Nt ×M單位矩陣且W1及W2係為u(Nt,M)的元素，可定義如等式11中所顯示的一弦距。When it is assumed that u(Nt, M) is an N t × M unit matrix and W1 and W2 are elements of u(Nt, M), a chord distance as shown in Equation 11 can be defined.

如選擇一預編碼矩陣而配置使用於分集模式中的編碼簿C_diversity(Nt,Mt,Nw2)的一個準則，用於最大化弦距的矩陣可選擇自CL-MIMO編碼簿。因為弦距的最大化表明呈現於編碼簿中的矩陣相對於各種頻道成功的操作，其可被使用作為選擇配置用於分集模式中的編碼簿的一預編碼矩陣的一準則。A criterion for the codebook C_diversity (Nt, Mt, Nw2) used in the diversity mode is configured as a precoding matrix is selected, and the matrix for maximizing the chord is selectable from the CL-MIMO codebook. Because the maximization of the chord distance indicates successful operation of the matrix presented in the codebook with respect to various channels, it can be used as a criterion for selecting a precoding matrix for the codebook in the diversity mode.

以下，將說明一種從一基本編碼簿提取一預編碼矩陣以便根據模式配置一編碼簿子集的方法，其中該模式的傳送天線的數量係為4且一秩係為2的情況。Hereinafter, a method of extracting a precoding matrix from a basic codebook to configure a codebook subset according to a mode in which the number of transmit antennas of the mode is 4 and a rank system is 2 will be described.

表2顯示一基本CL-MIMO編碼簿，用於根據分集模式及區域模式配置一編碼簿子集。Table 2 shows a basic CL-MIMO codebook for configuring a subset of codebooks according to the diversity mode and the zone mode.

表2Table 2

在表2所顯示的基本CL-MIMO編碼簿中，從m=0至m=15的預編碼矩陣滿足恆定模數特徵。即，在從m=0至m=15的預編碼矩陣中，因為對各天線的預編碼矩陣的輸出功率的總和相等，所以滿足恆定模數特徵。因此，在區域模式中，編碼簿子集可藉由提取從m=0至m=15的預編碼矩陣而配置。即，從基本CL-MIMO編碼簿，可配置將用於區域模式中的編碼簿子集C_localized(4,2,4)。In the basic CL-MIMO codebook shown in Table 2, the precoding matrix from m=0 to m=15 satisfies the constant modulus feature. That is, in the precoding matrix from m=0 to m=15, since the sum of the output powers of the precoding matrices of the respective antennas is equal, the constant modulus characteristic is satisfied. Therefore, in the regional mode, the codebook subset can be configured by extracting a precoding matrix from m=0 to m=15. That is, from the basic CL-MIMO codebook, the codebook subset C_localized (4, 2, 4) to be used in the region mode can be configured.

同時，在分集模式中，一編碼簿子集可藉由提取用於最大化一弦距的預編碼矩陣而配置。舉例而言，使用於分集模式中的一預編碼子集可藉由從基本SU-MIMO編碼簿提取滿足最大化弦距的一條件而對應m=23、m=29、m=25及m=27的預編碼矩陣而配置。Meanwhile, in the diversity mode, a codebook subset can be configured by extracting a precoding matrix for maximizing a chord. For example, a precoding subset used in the diversity mode may correspond to m=23, m=29, m=25, and m= by extracting a condition satisfying the maximum chord from the basic SU-MIMO codebook. Configured with 27 precoding matrices.

雖然已給定基於表2的基本編碼簿的一說明，但甚至當傳送天線及秩的數量改變時，一編碼簿子集可根據模式使用以上方法而配置。Although an explanation based on the basic codebook of Table 2 has been given, even when the number of transmit antennas and ranks is changed, a subset of codebooks can be configured according to the mode using the above method.

將說明本發明在上行鏈路及下行鏈路中的操作。The operation of the present invention in the uplink and downlink will be explained.

第4圖係一流程圖圖示根據本發明的一實施例的一種在下行鏈路中分配資源的方法。首先，在下行鏈路中，當一基地台對一UE作一回饋請求時，基地台通知UE區域模式及分集模式之一者，其將被應用於UE實行回饋時(步驟401)。即，當基地台對UE作回饋資訊的一請求時，基地台通知UE其UE應於何模式中傳送回饋資訊(區域模式或分集模式之一者)。被通知模式的UE與對回饋的請求一起從對應所通知的模式的一編碼簿子集選擇一預編碼器，應用預編碼器，且傳送回饋資訊(步驟402)。回饋資訊可對應用於設定一CQI或MCS級別的資訊。基地台使用回饋資訊分配資源至UE(步驟403)。此時，如上所述，不同編碼簿子集可根據模式而配置，且預編碼器可根據模式選擇自不同編碼簿子集。Figure 4 is a flow chart illustrating a method of allocating resources in the downlink, in accordance with an embodiment of the present invention. First, in the downlink, when a base station makes a feedback request to a UE, the base station notifies one of the UE area mode and the diversity mode, which will be applied when the UE performs feedback (step 401). That is, when the base station makes a request for feedback information to the UE, the base station notifies the UE of the mode in which the UE should transmit the feedback information (one of the area mode or the diversity mode). The UE in the notified mode, together with the request for feedback, selects a precoder from a subset of codebooks corresponding to the notified mode, applies a precoder, and transmits feedback information (step 402). The feedback information can be used to set a CQI or MCS level of information. The base station allocates resources to the UE using the feedback information (step 403). At this time, as described above, different codebook subsets may be configured according to modes, and the precoder may select from different codebook subsets according to the mode.

第5圖係一流程圖圖示根據本發明的一實施例的一種在上行鏈路中傳送資料的方法。在上行鏈路中，當UE傳送資料或類似者於上行鏈路中時，一基地台設定將應用的一模式(區域模式或分集模式)，根據該模式設定一CQI或MCS級別，且通知UE所設定的模式(步驟501)。可使用控制資訊而直接通知UE該模式，或可根據一子頻道化規則而間接通知UE該模式。UE從對應經通知的模式的一編碼簿子集選擇一預編碼器、應用預編碼器、且在上行鏈路中傳送資料(步驟502)。此時，如上所述，不同編碼簿子集可根據模式而配置，且預編碼器可根據模式而選擇自不同編碼簿子集。Figure 5 is a flow chart illustrating a method of transmitting data in the uplink in accordance with an embodiment of the present invention. In the uplink, when the UE transmits data or the like in the uplink, a base station sets a mode (area mode or diversity mode) to be applied, sets a CQI or MCS level according to the mode, and notifies the UE. The set mode (step 501). The UE may be directly notified of the mode using control information, or may be indirectly notified to the UE according to a sub-channelization rule. The UE selects a precoder, applies a precoder, and transmits the data in the uplink from a subset of codebooks corresponding to the notified mode (step 502). At this time, as described above, different codebook subsets may be configured according to modes, and the precoder may be selected from different codebook subsets according to the mode.

第6圖係一方塊圖顯示應用至一基地台及一使用者裝備(UE)且能夠實行以上方法的一裝置的配置。如第6圖所顯示，裝置60包括一處理單元61、一記憶單元62、一射頻(RF)單元63、一顯示單元64及一使用者介面單元65。一實體介面協定層由處理單元61提供。處理單元61提供一控制平面及一使用者平面。各階層的功能可由處理單元61實行。記憶單元62電氣連接至處理單元61且儲存一操作系統、應用程式及一般檔案。若裝置60係一UE，則顯示單元64可顯示各種資訊且可使用一已知液晶顯示器(LCD)、有機發光二極體(OLED)或類似者而執行。使用者介面單元65可由已知使用者介面的一結合而配置，例如一小鍵盤及一觸控螢幕。RF單元63電氣連接至處理單元61，以便傳送或接收一RF訊號。Figure 6 is a block diagram showing the configuration of a device applied to a base station and a user equipment (UE) and capable of performing the above method. As shown in FIG. 6, the device 60 includes a processing unit 61, a memory unit 62, a radio frequency (RF) unit 63, a display unit 64, and a user interface unit 65. A physical interface protocol layer is provided by processing unit 61. The processing unit 61 provides a control plane and a user plane. The functions of each level can be performed by the processing unit 61. The memory unit 62 is electrically coupled to the processing unit 61 and stores an operating system, applications, and general files. If device 60 is a UE, display unit 64 can display various information and can be executed using a known liquid crystal display (LCD), organic light emitting diode (OLED), or the like. The user interface unit 65 can be configured by a combination of known user interfaces, such as a keypad and a touch screen. The RF unit 63 is electrically connected to the processing unit 61 for transmitting or receiving an RF signal.

換言之，對技藝人士而言，用於由數個網路節點所組成的一網路中使得基地台能夠與UE通訊的各種操作將為顯而易見的，其中數個網路節點包括由基地台或基地台以外的網路節點所實施的基地台。「基地台」一詞必要時可由「固定台」、「節點B」、「e節點B(eNB)」、或「存取點」一詞取代。「使用者裝備」一詞對應至一行動站(MS)且「MS」一詞必要時亦可由「用戶站(SS)」、「行動用戶站(MSS)」、或「行動終端」一詞取代。In other words, for the skilled person, various operations for enabling the base station to communicate with the UE in a network consisting of several network nodes, including several base stations or base stations, will be apparent. A base station implemented by a network node other than the station. The term "base station" may be replaced by the words "fixed station", "node B", "eNodeB (eNB)", or "access point" if necessary. The term "user equipment" corresponds to a mobile station (MS) and the term "MS" may be replaced by the words "user station (SS)", "mobile subscriber station (MSS)" or "mobile terminal" if necessary. .

同時，例如本發明的UE，可使用一個人數位助理(PDA)、一手機、一個人通訊服務(PCS)電話、一全球行動系統(GSM)電話、一寬頻CDMA(WCDMA)電話、或一行動寬頻系統(MBS)電話。Meanwhile, for example, the UE of the present invention can use a PDA, a mobile phone, a personal communication service (PCS) phone, a Global System for Mobile (GSM) phone, a broadband CDMA (WCDMA) phone, or a mobile broadband system. (MBS) phone.

本發明的實施例可由各種手段而執行，舉例而言，硬體、韌體、軟體或其之結合。Embodiments of the invention may be performed by various means, such as hardware, firmware, software, or combinations thereof.

在藉由硬體執行本發明的情況下，本發明可由特定應用積體電路(ASICs)、數位訊號處理器(DSPs)、數位訊號處理裝置(DSPDs)、可程式邏輯裝置(PLDs)、現場可程式閘陣列(FPGAs)、一處理器、一控制器、一微控制器、一微處理器等等而執行。In the case of performing the invention by hardware, the invention may be implemented by specific application integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), and on-site. Execution is performed by program gate arrays (FPGAs), a processor, a controller, a microcontroller, a microprocessor, and the like.

若本發明的操作及功能由韌體或軟體執行，本發明可以各種形式執行，舉例而言，模組、程序、函數等等。軟體碼可儲存於一記憶單元中以便由一處理器驅動。記憶單元位於處理器之內或外，使得其可與上述處理器透過各種眾所周知的部件而通訊。If the operations and functions of the present invention are performed by firmware or software, the present invention can be implemented in various forms, for example, modules, programs, functions, and the like. The software code can be stored in a memory unit for being driven by a processor. The memory unit is located inside or outside the processor such that it can communicate with the aforementioned processor through various well known components.

本發明可應用至用於一無線存取系統中的一使用者裝備或網路。The invention is applicable to a user equipment or network for use in a wireless access system.

對技藝人士而言，在本發明中可作各種修改及改變而不悖離本發明的精神或範疇將為顯而易見的。因此，本發明欲覆蓋對本發明的修改及改變，倘若其進入隨附的申請專利範圍的範疇及其均等之中。Various modifications and changes may be made without departing from the spirit and scope of the invention. Thus, the present invention is intended to cover the modifications and alternatives

201．．．MIMO編碼器201. . . MIMO encoder

202．．．預編碼器202. . . Precoder

203．．．次載波映射器203. . . Secondary carrier mapper

60．．．裝置60. . . Device

61．．．處理單元61. . . Processing unit

62．．．記憶單元62. . . Memory unit

63．．．RF單元63. . . RF unit

64．．．顯示單元64. . . Display unit

65．．．使用者介面單元65. . . User interface unit

隨附的圖式被包含以提供本發明的一進一步瞭解，且被併入且構成本申請案的一部分，說明本發明的實施例且與說明書一起供以解釋本發明的原理，在圖式中：The accompanying drawings are included to provide a further understanding of the embodiments of the invention :

第1圖係一圖式顯示一般多輸入多輸出(MIMO)系統的配置；Figure 1 is a diagram showing the configuration of a general multiple input multiple output (MIMO) system;

第2圖係一圖式顯示在一傳送器中下行鏈路MIMO的構造；Figure 2 is a diagram showing the construction of downlink MIMO in a transmitter;

第3圖係一圖式顯示將實體資源單元(PRUs)映射至邏輯資源單元(LRUs)的一程序；Figure 3 is a diagram showing a procedure for mapping physical resource units (PRUs) to logical resource units (LRUs);

第4圖係一流程圖圖示根據本發明的一實施例的一種在下行鏈路中分配資源的方法；4 is a flow chart illustrating a method of allocating resources in a downlink according to an embodiment of the present invention;

第5圖係一流程圖圖示根據本發明的一實施例的一種在上行鏈路中傳送資料的方法；及5 is a flow chart illustrating a method of transmitting data in an uplink according to an embodiment of the present invention; and

第6圖係一方塊圖顯示應用至一基地台及一使用者裝備(UE)且能夠實行以上方法的一裝置的配置。Figure 6 is a block diagram showing the configuration of a device applied to a base station and a user equipment (UE) and capable of performing the above method.

S401-S403．．．步驟S401-S403. . . step

Claims (22)

一種在一開迴路多輸入多輸出(MIMO)系統中藉由一使用者裝備實行一回饋至一基地台的方法，該方法包含以下步驟：從該基地台接收回饋的一請求；及根據回饋的該請求，使用一預編碼矩陣傳送回饋資訊至該基地台，其中當回饋的該請求係對應至一區域模式時，該預編碼矩陣屬於經定義用於該區域模式的一第一編碼簿子集，且當回饋的該請求係對應至一分集模式時，該預編碼矩陣屬於經定義用於該分集模式的一第二編碼簿子集。 A method for performing a feedback to a base station by a user equipment in an open loop multiple input multiple output (MIMO) system, the method comprising the steps of: receiving a request for feedback from the base station; and The request, using a precoding matrix to transmit feedback information to the base station, wherein when the request for feedback is corresponding to a regional mode, the precoding matrix belongs to a first codebook subset defined for the regional mode, And when the request for feedback corresponds to a diversity mode, the precoding matrix belongs to a second subset of codebooks defined for the diversity mode. 如申請專利範圍第1項之方法，其中該第一編碼簿子集及該第二編碼簿子集之各者係以一預先決定數量的元素配置，該等元素來自經定義用於一閉迴路MIMO的一基本編碼簿。 The method of claim 1, wherein each of the first codebook subset and the second codebook subset is configured with a predetermined number of elements from a defined closed loop MIMO. A basic codebook. 如申請專利範圍第1項之方法，其中該第一編碼簿子集係以一預先決定數量的元素配置，該等元素滿足來自經定義用於一閉迴路MIMO的一基本編碼簿之恆定模數特徵。 The method of claim 1, wherein the first subset of codebooks is configured with a predetermined number of elements that satisfy a constant modulus characteristic from a basic codebook defined for a closed loop MIMO. . 如申請專利範圍第1項之方法，其中該第二編碼簿子集係以一預先決定數量的元素配置，該等元素用於最大化來自經定義用於一閉迴路MIMO的一基本編碼簿之一弦距。 The method of claim 1, wherein the second subset of codebooks is configured with a predetermined number of elements for maximizing one of a basic codebook defined for use in a closed loop MIMO Chord distance. 一種在一開迴路多輸入多輸出(MIMO)系統中藉由一基地台接收由一使用者裝備實行的一回饋之方法，該方法包含以下步驟：將回饋的一請求傳送至該使用者裝備；根據回饋的該請求，使用一預編碼矩陣從該使用者裝備接收回饋資訊；及基於該回饋資訊分配一資源至該使用者裝備，其中當回饋的該請求係對應至一區域模式時，該預編碼矩陣屬於經定義用於該區域模式的一第一編碼簿子集，且當回饋的該請求係對應至一分集模式時，該預編碼矩陣屬於經定義用於該分集模式的一第二編碼簿子集。 A method for receiving a feedback implemented by a user equipment by a base station in an open loop multiple input multiple output (MIMO) system, the method comprising the steps of: transmitting a request for feedback to the user equipment; Receiving feedback information from the user equipment using a precoding matrix according to the request for feedback; and allocating a resource to the user equipment based on the feedback information, wherein when the request for feedback is corresponding to an area mode, the pre The coding matrix belongs to a first codebook subset defined for the regional mode, and when the request for feedback corresponds to a diversity mode, the precoding matrix belongs to a second codebook defined for the diversity mode. set. 如申請專利範圍第5項之方法，其中該第一編碼簿子集及該第二編碼簿子集之各者係以一預先決定數量的元素配置，該等元素來自經定義用於一閉迴路MIMO的一基本編碼簿。 The method of claim 5, wherein each of the first codebook subset and the second codebook subset is configured with a predetermined number of elements from a defined closed loop MIMO. A basic codebook. 一種在一開迴路多輸入多輸出(MIMO)系統中用於 實行一回饋至一基地台的使用者裝備，該使用者裝備包含：一處理單元；及一射頻(RF)單元，該RF單元電氣連接至該處理單元，以便傳送或接收一RF訊號，其中該RF單元從該基地台接收回饋的一請求，且根據回饋的該請求，使用一預編碼矩陣傳送回饋資訊至該基地台，當回饋的該請求係對應至一區域模式時，該預編碼矩陣屬於經定義用於該區域模式的一第一編碼簿子集，且當回饋的該請求係對應至一分集模式時，該預編碼矩陣屬於經定義用於該分集模式的一第二編碼簿子集。 One for use in an open loop multiple input multiple output (MIMO) system Implementing a user equipment fed back to a base station, the user equipment comprising: a processing unit; and a radio frequency (RF) unit electrically connected to the processing unit for transmitting or receiving an RF signal, wherein the The RF unit receives a request for feedback from the base station, and according to the request for feedback, uses a precoding matrix to transmit feedback information to the base station, and when the request for feedback is corresponding to an area mode, the precoding matrix belongs to A first subset of codebooks for the region mode is defined, and when the request for feedback is corresponding to a diversity mode, the precoding matrix belongs to a second subset of codebooks defined for the diversity mode. 如申請專利範圍第7項之使用者裝備，其中該第一編碼簿子集及該第二編碼簿子集之各者係以一預先決定數量的元素配置，該等元素來自經定義用於一閉迴路MIMO的一基本編碼簿。 The user equipment of claim 7, wherein each of the first codebook subset and the second codebook subset is configured with a predetermined number of elements from a defined closed loop A basic codebook for MIMO. 一種在一開迴路多輸入多輸出(MIMO)系統中用於接收由一使用者裝備實行的一回饋之基地台，該基地台包含：一處理單元；及一射頻(RF)單元，該RF單元電氣連接至該處理單元，以便傳送或接收一RF訊號， 其中該RF單元傳送回饋的一請求至該使用者裝備，且根據回饋的該請求，從該使用者裝備接收使用一預編碼矩陣所傳送的回饋資訊，且該處理單元基於該回饋資訊分配一資源至該使用者裝備，其中當回饋的該請求係對應至一區域模式時，該預編碼矩陣屬於經定義用於該區域模式的一第一編碼簿子集，且當回饋的該請求係對應至一分集模式時，該預編碼矩陣屬於經定義用於該分集模式的一第二編碼簿子集。 A base station for receiving a feedback implemented by a user equipment in an open loop multiple input multiple output (MIMO) system, the base station comprising: a processing unit; and a radio frequency (RF) unit, the RF unit Electrically connected to the processing unit for transmitting or receiving an RF signal, The RF unit transmits a request for feedback to the user equipment, and according to the request for feedback, receives feedback information transmitted by using a precoding matrix from the user equipment, and the processing unit allocates a resource based on the feedback information. Up to the user equipment, wherein when the request for feedback corresponds to a regional mode, the precoding matrix belongs to a first codebook subset defined for the regional mode, and when the feedback is requested to correspond to one In the diversity mode, the precoding matrix belongs to a second subset of codebooks defined for the diversity mode. 如申請專利範圍第9項之基地台，其中該第一編碼簿子集及該第二編碼簿子集之各者係以一預先決定數量的元素配置，該等元素來自經定義用於一閉迴路MIMO的一基本編碼簿。 A base station as claimed in claim 9, wherein each of the first codebook subset and the second codebook subset is configured with a predetermined number of elements from a defined closed loop MIMO A basic codebook. 一種在一開迴路多輸入多輸出(MIMO)系統中藉由一使用者裝備傳送上行鏈路資料至一基地台的方法，該方法包含以下步驟：以一預編碼矩陣預編碼該上行鏈路資料；及使用分配至該使用者裝備的一資源，傳送該預編碼的上行鏈路資料至該基地台，其中當該資源係一區域模式的一第一類型資源時，該預編碼矩陣屬於經定義用於該區域模式的一第一編碼簿子集，且當該資源係一分集模式的一第二類型資源時， 該預編碼矩陣屬於經定義用於該分集模式的一第二編碼簿子集。 A method for transmitting uplink data to a base station by a user equipment in an open loop multiple input multiple output (MIMO) system, the method comprising the steps of: precoding the uplink data with a precoding matrix Transmitting the precoded uplink data to the base station using a resource allocated to the user equipment, wherein the precoding matrix is defined when the resource is a first type of resource in a regional mode a first codebook subset for the zone mode, and when the resource is a second type resource of a diversity mode, The precoding matrix belongs to a second subset of codebooks defined for the diversity mode. 如申請專利範圍第11項之方法，其中該第一編碼簿子集及該第二編碼簿子集之各者係以一預先決定數量的元素配置，該等元素來自經定義用於一閉迴路MIMO的一基本編碼簿。 The method of claim 11, wherein each of the first codebook subset and the second codebook subset is configured with a predetermined number of elements from a defined closed loop MIMO. A basic codebook. 如申請專利範圍第11項或第12項之方法，進一步包含以下步驟：從該基地台接收資訊，該資訊指示在該區域模式及該分集模式之間要用何種模式來對分配至該使用者裝備的該資源進行應用。 The method of claim 11 or 12, further comprising the step of receiving information from the base station indicating which mode is to be used for the use between the regional mode and the diversity mode. This resource is equipped for application. 一種在一開迴路多輸入多輸出(MIMO)系統中藉由一基地台從一使用者裝備接收上行鏈路資料的方法，該方法包含以下步驟：從該使用者裝備接收該上行鏈路資料；使用分配至該使用者裝備及一預編碼矩陣的一資源，其中當該資源係一區域模式的一第一類型資源時，該預編碼矩陣屬於經定義用於該區域模式的一第一編碼簿子集，且當該資源係一分集模式的一第二類型資源時，該預編碼矩陣屬於經定義用於該分集模式的一第二編碼簿子集。 A method for receiving uplink data from a user equipment by a base station in an open loop multiple input multiple output (MIMO) system, the method comprising the steps of: receiving the uplink data from the user equipment; Using a resource allocated to the user equipment and a precoding matrix, wherein when the resource is a first type resource of a regional mode, the precoding matrix belongs to a first encoding book defined for the regional mode The set, and when the resource is a second type of resource of a diversity mode, the precoding matrix belongs to a second subset of codebooks defined for the diversity mode. 如申請專利範圍第14項之方法，其中該第一編碼簿子集及該第二編碼簿子集之各者係以一預先決定數量的元素配置，該等元素來自經定義用於一閉迴路MIMO的一基本編碼簿。 The method of claim 14, wherein each of the first codebook subset and the second codebook subset is configured with a predetermined number of elements from a defined closed loop MIMO. A basic codebook. 如申請專利範圍第14項或第15項之方法，進一步包含以下步驟：傳送資訊至該使用者裝備，該資訊指示在該區域模式及該分集模式之間要用何種模式來對分配至該使用者裝備的該資源進行應用。 The method of claim 14, wherein the method further comprises the step of: transmitting information to the user equipment, the information indicating which mode is to be assigned to the region mode and the diversity mode The resource of the user equipment is applied. 一種在一開迴路多輸入多輸出(MIMO)系統中用於傳送上行鏈路資料至一基地台的使用者裝備，該使用者裝備包含：一處理單元；及一射頻(RF)單元，該RF單元電氣連接至該處理單元，以便傳送或接收一RF訊號，其中該RF單元使用分配至該使用者裝備的一資源，而傳送以一預編碼矩陣預編碼的該上行鏈路資料至該基地台，其中當該資源係一區域模式的一第一類型資源時，該預編碼矩陣屬於經定義用於該區域模式的一第一編碼簿子集，且當該資源係一分集模式的一第二類型資源時， 該預編碼矩陣屬於經定義用於該分集模式的一第二編碼簿子集。 A user equipment for transmitting uplink data to a base station in an open loop multiple input multiple output (MIMO) system, the user equipment comprising: a processing unit; and a radio frequency (RF) unit, the RF The unit is electrically connected to the processing unit for transmitting or receiving an RF signal, wherein the RF unit transmits the uplink data precoded with a precoding matrix to the base station using a resource allocated to the user equipment And when the resource is a first type resource of a regional mode, the precoding matrix belongs to a first codebook subset defined for the regional mode, and when the resource is a second type of a diversity mode Resources, The precoding matrix belongs to a second subset of codebooks defined for the diversity mode. 如申請專利範圍第17項之使用者裝備，其中該第一編碼簿子集及該第二編碼簿子集之各者係以一預先決定數量的元素配置，該等元素來自經定義用於一閉迴路MIMO的一基本編碼簿。 The user equipment of claim 17, wherein each of the first codebook subset and the second codebook subset is configured with a predetermined number of elements from a defined closed loop A basic codebook for MIMO. 如申請專利範圍第17項或第18項之使用者裝備，其中該RF單元從該基地台接收資訊，該資訊指示在該區域模式及該分集模式之間要用何種模式來對分配至該使用者裝備的該資源進行應用。 For example, in the user equipment of claim 17 or 18, wherein the RF unit receives information from the base station, the information indicating which mode is to be used between the regional mode and the diversity mode. The resource of the user equipment is applied. 一種在一開迴路多輸入多輸出(MIMO)系統中用於從一使用者裝備接收上行鏈路資料的基地台，該基地台包含：一處理單元；及一射頻(RF)單元，該RF單元電氣連接至該處理單元，以便傳送或接收一RF訊號，其中該RF單元使用分配至該使用者裝備及一預編碼矩陣的一資源，從該使用者裝備接收該上行鏈路資料，其中當該資源係一區域模式的一第一類型資源時，該預編碼矩陣屬於經定義用於該區域模式的一第一編碼簿子集，且當該資源係一分集模式的一第二類型資源時， 該預編碼矩陣屬於經定義用於該分集模式的一第二編碼簿子集。 A base station for receiving uplink data from a user equipment in an open loop multiple input multiple output (MIMO) system, the base station comprising: a processing unit; and a radio frequency (RF) unit, the RF unit Electrically coupled to the processing unit for transmitting or receiving an RF signal, wherein the RF unit receives the uplink data from the user equipment using a resource allocated to the user equipment and a precoding matrix, wherein When the resource is a first type resource of a regional mode, the precoding matrix belongs to a first codebook subset defined for the regional mode, and when the resource is a second type resource of a diversity mode, The precoding matrix belongs to a second subset of codebooks defined for the diversity mode. 如申請專利範圍第20項之基地台，其中該第一編碼簿子集及該第二編碼簿子集之各者係以一預先決定數量的元素配置，該等元素來自經定義用於一閉迴路MIMO的一基本編碼簿。 A base station as claimed in claim 20, wherein each of the first codebook subset and the second codebook subset is configured with a predetermined number of elements from a defined closed loop MIMO A basic codebook. 如申請專利範圍第20項或第21項之基地台，其中該RF單元傳送資訊至該使用者裝備，該資訊指示在該區域模式及該分集模式之間要用何種模式來對分配至該使用者裝備的該資源進行應用。For example, in the base station of claim 20 or 21, wherein the RF unit transmits information to the user equipment, the information indicates which mode is to be used between the regional mode and the diversity mode. The resource of the user equipment is applied.
TW099113969A 2009-04-30 2010-04-30 Method,user equipment, and base station for setting precoder in open loop mimo system TWI419495B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17398309P 2009-04-30 2009-04-30
KR1020090067708A KR101356518B1 (en) 2009-04-30 2009-07-24 Method for setting a precoder in open loop mimo system

Publications (2)

Publication Number Publication Date
TW201126945A TW201126945A (en) 2011-08-01
TWI419495B true TWI419495B (en) 2013-12-11

Family

ID=43405515

Family Applications (1)

Application Number Title Priority Date Filing Date
TW099113969A TWI419495B (en) 2009-04-30 2010-04-30 Method,user equipment, and base station for setting precoder in open loop mimo system

Country Status (3)

Country Link
KR (1) KR101356518B1 (en)
CN (1) CN102415000B (en)
TW (1) TWI419495B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103731233B (en) 2012-10-12 2018-07-03 华为技术有限公司 code word feedback method and receiver

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060098568A1 (en) * 2004-11-09 2006-05-11 Samsung Electronics Co., Ltd. Method for supporting various multi-antenna schemes in BWA system using multiple antennas
US20070149180A1 (en) * 2005-12-05 2007-06-28 Lin Xintian E Multiple input, multiple output wireless communication system, associated methods and data structures
US20080247475A1 (en) * 2007-04-04 2008-10-09 Samsung Electronics Co., Ltd. Method for codebook design and beamforming vector selection in per-user unitary rate control (pu2rc) system
TW200901696A (en) * 2007-03-22 2009-01-01 Marvell World Trade Ltd Variable codebook for MIMO system
TW200910807A (en) * 2007-06-25 2009-03-01 Lg Electronics Inc Method of transmitting data in multiple antenna system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100950644B1 (en) * 2005-03-04 2010-04-01 삼성전자주식회사 Feedback method for mimo communication system
KR100735373B1 (en) * 2006-02-06 2007-07-04 삼성전자주식회사 Method and system for transmitting data in a communication system
KR101458185B1 (en) * 2007-04-04 2014-11-13 삼성전자주식회사 Method for codebook design and beamforming vector selection in pu2rc system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060098568A1 (en) * 2004-11-09 2006-05-11 Samsung Electronics Co., Ltd. Method for supporting various multi-antenna schemes in BWA system using multiple antennas
US20070149180A1 (en) * 2005-12-05 2007-06-28 Lin Xintian E Multiple input, multiple output wireless communication system, associated methods and data structures
TW200901696A (en) * 2007-03-22 2009-01-01 Marvell World Trade Ltd Variable codebook for MIMO system
US20080247475A1 (en) * 2007-04-04 2008-10-09 Samsung Electronics Co., Ltd. Method for codebook design and beamforming vector selection in per-user unitary rate control (pu2rc) system
TW200910807A (en) * 2007-06-25 2009-03-01 Lg Electronics Inc Method of transmitting data in multiple antenna system

Also Published As

Publication number Publication date
TW201126945A (en) 2011-08-01
KR20100119466A (en) 2010-11-09
KR101356518B1 (en) 2014-02-14
CN102415000A (en) 2012-04-11
CN102415000B (en) 2015-07-08

Similar Documents

Publication Publication Date Title
KR102372183B1 (en) Method and apparatus for beam measurement and management in a wireless system
US20100278278A1 (en) Method for setting precoder in open loop mimo system
JP6767718B2 (en) Communication equipment, communication methods and integrated circuits
US11750340B2 (en) Communication method and apparatus in full-dimensional multiple-input multiple-output mobile communication system
JP5905484B2 (en) Apparatus and method for periodic channel state reporting in a wireless network
CN103299574B (en) Efficient information for transmitting mandate maps
WO2018028158A1 (en) Feedback method and acquisition method for grouping indication information and device
US8781485B2 (en) Method and apparatus for transmitting signal in a wireless communication system using comp
CN109804594A (en) With continuous precoding come dynamic regulation transmission property
KR20110124755A (en) System and method for multi-user and multi-cell mimo transmissions
CN102484515A (en) Method And Apparatus For Supporting Single-user Multiple-input Multiple-output (su-mimo) And Multi-user Mimo (mu-mimo)
KR20070094442A (en) Method for transmiting/receiving feedback information in a multi-antenna system of selporting multi-user
KR20130114002A (en) Method and apparatus for transmitting and receiving channels in mobile communication system supporting massive mimo transmission
KR20140038120A (en) Method and apparatus for transmitting and receivintg feedback information in mobile communication system based on full dimension mimo
JP2015515761A (en) Channel state information feedback method and user equipment
JP2023543287A (en) Channel state information processing method, device, and terminal
WO2014015726A1 (en) Pilot signal sending method and apparatus
JP5149445B2 (en) Method of transmitting pilot assignment information to user equipment in a multi-user multiple I / O system
TWI419495B (en) Method,user equipment, and base station for setting precoder in open loop mimo system
US8812814B2 (en) User equipment buffer management in multiple-input multiple-output communication systems
US8422445B2 (en) Method for transmitting pilot allocation information to user equipment in a multi-user multiple input multiple output system
TW201210235A (en) Method and apparatus for transmitting feedback request and method and apparatus for receiving feedback request in wireless communication system
Cho et al. A cqi feedback reduction scheme for multi-user mimo/ofdma systems
JP2017163567A (en) Multi-point cooperative transmission mode

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees