CN101123743A - A cooperative self-adapted retransmission system and method - Google Patents

A cooperative self-adapted retransmission system and method Download PDF

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CN101123743A
CN101123743A CN 200710095903 CN200710095903A CN101123743A CN 101123743 A CN101123743 A CN 101123743A CN 200710095903 CN200710095903 CN 200710095903 CN 200710095903 A CN200710095903 A CN 200710095903A CN 101123743 A CN101123743 A CN 101123743A
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retransmission
mobile communication
data
television broadcasting
terminal
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CN 200710095903
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CN101123743B (en
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刁心玺
宋荣方
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中兴通讯股份有限公司
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Abstract

The invention relates to a cooperative adaptive retransmission system comprising a ground digital television broadcasting emitting unit, a mobile communication base station, a multi-band antenna, a cooperative control unit and a mobile terminal; the multi-band antenna is used to radiate mobile communication signal and broadcasting signal and to receive mobile communication signal; the cooperative control unit is used to control cooperative relation between the ground digital television broadcasting emitting unit and the mobile communication base station; the mobile terminal also includes a television receiving tuner unit and a decoder unit and is used to receive information sent out from the mobile communication base station or the broadcasting signal emitting unit and to feedback receiving activity information to the mobile communication base station. The system provided by the invention is convenient to be realized on the existing system architecture; the invention can realize rapid switching of the mobile terminal between ground digital television broadcasting signal and mobile communication signal; the invention can ensure reliable receipt of digital broadcasting; the invention realizes data download through a ground digital television broadcasting air interface.

Description

一种协同自适应重发系统和方法技术领域本发明涉及通信领域,尤其涉及蜂窝移动通信系统协同地面数字电视广播系统实现协同自适应重发的系统和方法。 A synergistic systems and methods for adaptive retransmission Technical Field The present invention relates to the field of communications, particularly to a system and method for a cellular mobile communication system, digital terrestrial television broadcasting system coordinated to achieve synergy adaptive retransmission. 背景技术蜂窝移动通信系统的一个演进趋势是增强其内容服务能力,多媒体广播和多媒体下载是内容服务的主要内容,因此,增加多媒体广播、组播和高速下载能力是蜂窝移动通信系统演进的基本内容。 BACKGROUND trend in the evolution of a cellular mobile communication system is to enhance its ability to serve content, download multimedia broadcast and multimedia content services is the main content, thus increasing multimedia broadcast, multicast, and high-speed download capability is an essential element of the evolution of cellular mobile communication systems . 蜂窝移动通信系统为增强多媒体广播、组播能力普遍采取的技术途径有两条,---个途径是基于系统现有的传输速率,在尽可能少地改动空中接口协议的前提下增加对广播、组播能力的支持,这种方法的好处是对现有系统改动小,缺点是可以提供的广播、组播速率受现有系统设计的限制,至于高速下载,如提供十几兆比特每秒的下载速度,这种途径是无法达到的;另一条途径是根据多媒体广播、组播、高速下载对空口速度的需要,重新设计新的空中接口和系统结构,如3GPP LTE采用的方式,这种方式的好处是可以得到更为优化的系统结构和空中接口速度,但是,其缺点是技术难度大、商用周期长,并且和现有的系统难以兼容。 Cellular mobile communication system is enhanced multimedia broadcast multicast capability technical approach generally taken has two, one approach is based on existing --- transmission rate of the system, under the premise of increasing change as little as possible of the air interface protocol for broadcasting to support multicasting capability, the benefits of this approach is that small changes to the existing system, the drawback is to provide broadcast, multicast, rate is limited by the existing system design, as high-speed downloads, such as providing more than ten megabits per second download speed, this approach can not be achieved; another way is a multimedia broadcast, multicast, the need for high-speed download speed air interface, re-design of the new air interface and system architecture, using means such as 3GPP LTE, which benefits approach can be more optimized system architecture and air interface speeds, however, the drawback is the technical difficulties, the commercial cycle is long, and difficult to be compatible with existing systems. 除了上述两条目前受到普遍关注的蜂窝移动通信系统的演进路线,多网协同或者多标准协同是蜂窝移动通信系统实现多媒体广播、组播和高速下载的第三条技术路线。 In addition to the two current directions by a cellular mobile communication system evolved universal concern, cooperative multi-network or multi-standard Synergy third technical route cellular communication system mobile multimedia broadcast, multicast, and high-speed downloads. 这里仅以TD-SCDMA系统与DMB-T/H系统的协同为例, 讨论通过蜂窝移动通信标准与地面数字电视广播标准之间的协同实现多媒体广播、组播和高速下载的方法。 Here only synergistic TD-SCDMA system and DMB-T / H systems as an example, discussion implemented method of multimedia broadcast, multicast and High Speed ​​downloaded by cooperation between the cellular mobile communication standard of digital terrestrial television broadcasting standard. 这里主要对TD-SCDMA系统的物理信道及帧结构加以说明。 Here will be described mainly on the physical channel and the frame structure of TD-SCDMA system. TD-SCDMA系统与其他3G系统的最大不同在于物理层技术不同。 TD-SCDMA system is the different physical layer technology and other 3G systems different from the maximum. TD-SCDMA的扩频带宽为1.6 MHz,符号速率可以根据1.28 Mcps的码速率和扩频因子得到。 TD-SCDMA is the spreading bandwidth is 1.6 MHz, the symbol rate can be obtained according to the code rate and spreading factor of 1.28 Mcps. 在TD-SCDMA系统中,1个10 ms的无线帧可以分成2 个5 ms子帧,每个子帧由7个675 us的常规时隙(TS0-TS6),对应于图1的101〜107,和3个特殊时隙(下行导频时隙、保护间隔和上行导频时隙)组成。 In the TD-SCDMA system, one radio frame of 10 ms may be divided into two 5 ms subframes, each subframe consists of seven regular time slots of 675 us (TS0-TS6), corresponding to 101~107 of FIG. 1, and three special time slots (downlink pilot time slot, a guard interval and an uplink pilot time slot) composition. 常规时隙用来传送用户数据或控制信息,TSO (101)总是固定地用作下行时隙来发送系统广播信息,而TS1 (102)总是固定地用作上行时隙。 Conventional slots are used to transmit user data or control information, TSO (101) fixedly always downlink time slots used to transmit broadcast system information, and TS1 (102) is used as the uplink slots always fixedly. 其他的常规时隙可以根据需要灵活地配置成上行或下行以实现不对称业务的传输,如分组数据的传输。 Other conventional slot can be flexibly configured to enable uplink or downlink asymmetrical service transmission, such as packet data transmission according to need. 用作上行链路的时隙和用作下行链路的时隙之间由1个转换点分开。 Between time slots and downlink time slots used as the uplink are separated by a switching point. 每个5 ms的子帧中设有两个转换点,第1个转换点固定在TSO 结束处,而第2个转换点则取决于小区上、下行时隙的配置,如图1所示。 Each sub-frame of 5 ms is provided with two switching points, the first switching point is fixed at one end of the TSO, and the second switching points depend on the cell, downlink slot configuration as shown in FIG. 目前,地面数字电视传输有三大标准,即美国的ATSC、欧洲的DVB和日本的ISDB。 Currently, there are three major terrestrial digital TV transmission standard, namely the US ATSC, DVB in Europe and Japan ISDB. "地面数字多媒体与电视广播系统"(DMB-T)是中国提出的5个地面数字电视广播系统方案之一,该方案采用吋域同步正交频分复用技术(TDS-OFDM)。 "Terrestrial digital television broadcasting system with multimedia" (DMB-T) is one of a digital television broadcast system programs five ground China proposed, the program uses inch domain synchronous Orthogonal Frequency Division Multiplexing (TDS-OFDM). 目前,在DMB-T标准方案的基础上,正在研发手持数字电视广播(DMB-H)标准方案。 Currently, based on DMB-T standard protocol on is developing handheld digital television broadcasting (DMB-H) standard protocol. DMB-H标准方案与欧洲DVB-H标准相比,具有一定的优势,现还处于研制阶段。 Compared with the European DVB-H standard DMB-H standard solution has certain advantages, it is still in the development stage. 下面简要介绍DMB-T的特点。 The following briefly describes the characteristics of DMB-T. DMB-T的系统组成。 The DMB-T system. DMB-T传输系统由传输协议、信号处理算法和硬件系统等功能模块组成。 DMB-T transmission system by a transmission protocol, the signal processing algorithms and hardware functions and other system modules. 系统的发射端结构如图2 (a)所示。 Transmitting end structure of the system in FIG. 2 (a) shown in FIG. 图中,传输流TS经过数据扰乱201、纠错编码202、时域交织/串并转换203、逆快速傅里叶变换(IFFT)和频域交织204,就完成了TS的正交频分复用(OFDM)调制过程,输出一串IFFT系数,这组IFFT系数经过并串变换205变换成可以串行传输的一组系数、这组串行系数再经过加保护带206的处理,就形成了可以抗多径干扰的OFDM帧体211 ,复接器207对OFDM帧体211和同步信息(PN序列)进行复接,复接器输出的是信号帧212。 Drawing, the transport stream TS 201 via a data scrambling, error correction coding 202, interleaving the time-domain / parallel converter 203, an inverse fast Fourier transform (IFFT) 204 and frequency domain interleaving, complete orthogonal frequency division multiplexing TS (OFDM), a modulation process, a series of output IFFT coefficients, the set of coefficients through the IFFT 205 is converted to serial conversion can be a set of serial transmission coefficients, which coefficients are processed serially through 206 plus the guard band is formed anti-multipath interference may OFDM frame 211, synchronization information 211 and multiplexer 207 form an OFDM frame (PN sequence) multiplexing, the output of the multiplexer 212 is a signal frame. 信号帧经过成形滤波和D/A变换208处理后,送到IF变换和IF滤波209,经过209上变频后的信号送到发射机发送出去。 After the signal frame is shaped filter and D / A conversion process 208, converted to IF and IF filter 209, the signal after conversion to the transmitter 209 to send out. DMB-T的技术特性。 Technical characteristics of DMB-T. DMB-T的设计目标是实现多媒体信息在室内外、 固定、移动和便携单向广播和双向通信。 DMB-T design goal is to achieve the multimedia information in indoor and outdoor, fixed, mobile and portable two-way communication and unidirectional broadcast. DMB-T系统的传输协议基于TDS-OFDM的多载波调制技术,主要有以下特点:a、分级的帧结构。 DMB-T transmission protocol based system TDS-OFDM multi-carrier modulation technique, has the following characteristics: a, hierarchical frame structure. 见图2 (b),其帧结构是分级的,分为信号帧212、 帧群、超帧和日帧。 Figure 2 (b), which frame structure is hierarchical, the signal is divided into frames 212, frame group, the superframe and frame day. 一个基本帧结构称为一个信号帧。 A basic frame structure is called a signal frame. 帧群定义为255个信 Frame group defined as 255 channels

号帧,其第一帧定义为帧群头。 Frame number, frame is defined as a first frame group header. 帧群中的信号帧有唯--的帧号,标号从0到254,信号帧号(FN)被编码到当前信号帧的帧同步序列中。 Signal frames are the only group - a frame number, numbered from 0 to 254, the signal frame number (FN) is encoded to a frame synchronization sequence of the current signal frame. 超帧定义为一组帧群,帧结构的顶层称为超帧群。 Superframe frame group defined as a group, the top frame structure called a super frame group. 超帧被编号,从0到最大帧群号。 Super frame are numbered from 0 to the maximum frame group number. 超帧号(SFN) 与超帧群号(SFGN)—起被编码到超帧的第一个帧群头中。 Hyper frame number (SFN) superframe group number (SFGN) - from the first coded into a frame group header of the superframe. SFGN被定义为超帧群发送的日历日期,超帧群以一个自然日为周期进行周期性重复,它被编码为下行线路超帧群中一个超帧的第一个帧群头中的前两个字节。 SFGN super calendar date is defined as the transmission frame group, super-frame group repeats periodically in a calendar day period, it is coded as a frame group header of downlink superframe in a superframe group in the first two bytes. 在太平洋标准时间(PST)或北京时间00:00:00AM,物理信道帧结构被复位并开始一个新的超帧群。 Pacific Standard Time (PST) or GMT 00:00:00 AM, the physical channel frame structure is reset and starts a new super-frame group. DMB-T系统的物理信道是周期的,并且可以和绝对时间同步, 从而可使接收机在需要的时候才开机。 Physical channel DMB-T system is periodic, and can be an absolute time synchronization, thereby allowing the receiver was turned on when needed. 这意味着接收机可以设计成只有接收所需信息时才进入接收状态,从而达到省电的目的。 This means that the receiver can be designed to enter the required information is received only if the receiving state, so as to achieve the purpose of saving. 其帧结构如图2所示。 Its frame structure shown in Figure 2. b、 快速同步。 b, fast synchronization. 一个信号帧由帧同歩和帧体两部分组成。 A signal frame consists of two parts with the frame and a frame body composed of ho. 帧同歩信号采用沃尔什编码(WalshCode)的伪随机序列,能实现多基站识别,它包含前同歩、 PN序列和后同步。 Ho signal frame using the same Walsh code (WalshCode) of the pseudo-random sequence, to achieve multi-station identification, with the ho synchronization, the PN sequence, and it comprises a front. 对于一个信号帧群中的不同信号帧,有不同的帧同歩信号,可利用帧同步对信号帧进行识别。 A signal frame for the different groups in the signal frame, different frame-ho signal, the frame sync signal can be used to identify frames. DMB-T系统采用TDS-OFDM调制方案,其采用沃尔什编码的扩频伪随机序列同步头,能够实现快速同步。 DMB-T system using TDS-OFDM modulation scheme, which uses Walsh code spreading pseudo-random sequence of the synchronization header, the synchronization can be achieved quickly. DMB-T 系统的同歩时间约为5ms,而其它数字电视标准的同步吋间却在100ms以上; 并且,其同步抗干扰能力强,能在-20dB信噪比下可靠恢复同步。 Ho same time DMB-T system is about 5ms, and other inter-standard synchronous digital TV has more than 100ms inch; and, anti-interference ability its synchronization, the synchronization can be securely restored at -20dB SNR. c、 多业务广播更方便。 c, multi-service broadcasting is more convenient. 为每一个长度500"s的信号帧设定了独特地址的帧头,方便数据信息的识别和分离,具有融合多业务广播的技术基础,还将为"双向互动"提供同步。帧体的基带信号是一个正交频分复用(OFDM)块。 一个OFDM块可进一步分成保护间隔和一个离散傅里叶变换(DFT)块,如图2所示。DFT块在其时域中有3780个取样,它们是频域中3780个子载波的逆离散傅氏变换。专利申请CN200510069750,"移动通信系统中聚合广播业务和多播业务的方法和装置"提供一种向用户同时提供多播业务和广播业务的方法和系统, 以支持在CDMA移动通信系统中的多媒体广播/单播服务(MBMS)。在广播/组播服务中心(BM-SC)中或在无线网络控制器(RNC)中的数据生成器, 分别生成用于聚合用户业务的广播数据和多播数据,并同时传输广播数据和多播数据到己经加入到广播会话和多播会话中的用户。当在广播 For each 500 length "s is set in the signal frame header address unique, identifying information and data to facilitate the separation, technology base having multi-service broadcasting, also the" two-way interaction "to provide synchronization. Baseband frame member a signal is orthogonal frequency-division multiplexing (OFDM) blocks may be further divided into a block of OFDM guard interval and a discrete Fourier transform (DFT) block, as shown in FIG .DFT block 3780 which has a time domain sampling, which are 3780 subcarriers in the frequency domain an inverse discrete Fourier transform. patent application CN200510069750, "method and apparatus for broadcast traffic and multicast traffic in a mobile communication system, the polymerization" provides a method of providing broadcast and multicast service to the user at the same time method and system services to support the CDMA mobile communication system in a multimedia broadcast / unicast service (MBMS). or data radio network controller (RNC) in the broadcast / multicast service center (BM-SC) in generator, generates the broadcast data and user traffic for the polymerization multicast data, and also transmit broadcast data and multicast data to the broadcast session had been added to the user and multicast session. when the broadcast 业务接收期间请求多播业务时,用户终端建立用于接收多播业务的专用信道,同时保持用于接收广播业务的公用信道,然后同时在公用信道上接收广播数据,在专用信道上接收多播数据。专利申请CN00812174名称为"DVB-T的移动多媒体终端及大与小区通信"提供交互式移动多媒体终端的方法与装置。该移动多媒体终端(即MMT) 能够用诸如DVB-T等数字数据广播接收机接收宽带数据流。用诸如本地或大小区规模通信链路实现交互性。本地链路可以是WLAN或蓝牙(低功率RF收发机)。大小区规模通信链路,可以是诸如GSM、 CDMA、 TDMA等移动台链路。如果未找到本地连接点,可将带蓝牙链路的移动台用作IP路由器或大小区规模通信的便携式基台。MMT将DVB-T接收、数字显示、与通信链路综合在一起来提供移动环境中的交互性。带有移动台的MMT通信链路使它能作为该移动台 Receiving a service request during a multicast service, a user terminal receiving multicast traffic for establishing a dedicated channel, while maintaining a common channel for receiving the broadcast service, and then simultaneously receives the broadcast data in the common channel, a dedicated channel receiving multicast method and apparatus for data. patent application CN00812174 providing interactive mobile multimedia terminal name is "large multimedia terminal and the communication with the mobile DVB-T cell." the mobile multimedia terminal (i.e., MMT) can be used, such as a digital data broadcasting DVB-T, etc. The receiver receives wideband data stream. size or using a communication link such as a local region size to achieve interactivity. The local link may be a WLAN or Bluetooth (low power RF transceiver). the large scale communications link, such as may be a GSM, CDMA , TDMA mobile links, etc. If the local connection point is not found, may be a Bluetooth link with the mobile station as an IP router or the large size of a portable communication base station .MMT the DVB-T receiver, digital display, a communication comprehensive link together to provide interactivity in a mobile environment. MMT communication link with the mobile station as the mobile station so that it can 扩展显示器工作。该方法包括下述步骤:1)向数字服务提供者请求信息;2)在广播中接收来自所述数字服务提供者的数据信号;3)解码所述数据信号供展示;4)优化所述数据信号供输出;以及展示所述优化的信号作为输出。摩托罗拉公司在2007年2月递交给第三代伙伴项目3GPP (The third Generation Partnership Project))的技术提案,提案号Rl-070781 ,提案名称: "用于增强的MBMS的上行反馈,Uplink Feedback for E-MBMS "给出了-一种通过终端上报接收失败信号或者称之为失败确认信号(NACK: Not acknowledgment)的方法是:终端上报对MBMS信号的接收失败信息到基站, 基站进行如下几种方式的相应:1)提升MBMS的发射功率;2)根据NACK 的历史数据决定是否重发MBMS信号;3)对MBMS进行编码方式的调整。 Expansion work of the display method comprising the steps of: 1) a request to a digital information service provider; 2) from the digital received data signal in the broadcast service provider; and 3) decoding the data signals for display; 4) optimizing the data signal for output; and displaying the signal as an output optimized Motorola submitted to the third Generation partnership project 3GPP (the third Generation partnership project)) technical proposal in February 2007, Prop Rl-070781. proposal name: "enhanced uplink feedback for the MBMS, uplink feedback for E-MBMS" is given - a signal failure signal or the acknowledgment report received by the called terminal fails: method (NACK Not acknowledgment) is: reports corresponding terminal receiving MBMS signal failure information to the base station, the base station performs the following ways: 1 transmit power) to enhance the MBMS; 2) determines whether the retransmission MBMS NACK signal based on historical data; and 3) for encoding an MBMS adjustments. 现有技术的缺点是:不能实现地面数字电视广播信道与移动通信信道之间有自动请求重发。 Disadvantages of the prior art are: automatic repeat request between the digital terrestrial television broadcasting channel with a mobile communication channel can not be achieved. 专利申请CN00812174名称为"DVB-T的移动多媒体终端及大与小区通信"只是给出了一种利用蜂窝移动通信网实现广播信道的"返程"通道的方法,不能解决地面数字电视广播系统用于数据广播和数据下载时的高效自动重发。 CN00812174 patent application entitled "Mobile multimedia communication terminals and large with the DVB-T cell" gives only a method of using the cellular mobile communication network for broadcast channel "return" path, we can not solve for terrestrial digital television broadcasting system efficient automatic retransmission when the data broadcasting and data download. 此外,摩托罗拉公司在2007年2月递交给3GPP的技术提案Rl-070781所述方法的缺点是:在MBMS采用单频网的情况下,局部小范围需要的数据重发将导致整个单频网的重发,造成了频谱浪费。 Further, Motorola filed in February 2007 to the disadvantage of the method of the technical proposals 3GPP Rl-070781 are: the case of using in the MBMS single frequency network, data required small local retransmission will cause the entire SFN retransmitted, resulting in a waste of spectrum. 发明内容 SUMMARY

本发明为了解决上述的技术问题,提供了一种协同自适应重发系统和方法。 The present invention is to solve the above technical problems, there is provided a system and method for adaptive retransmission in a synergistic. 在所述系统中建立广播频道发射信号与移动通信系统发射信号之间的同歩关系,并给出协同自适应重发方法,以达到如下效果:通过建立地面数字电视广播信号和移动通信信号之间的同步关系,可以实现终端在地面数字电视广播信号,和移动通信信号之间快速切换;协同自适应重发保证数据广播的可靠接收;通过地面数字电视广播空中接口实现数据下载。 Establishing a broadcast channel in the system, the mobile communication system transmitting a signal with the relationship between the ho signal transmission, and gives a synergistic adaptive retransmission method, in order to achieve the following effect: by establishing a terrestrial digital television broadcast signals and mobile communication signals the relationship between the synchronization, the terminal can achieve rapid switching between terrestrial digital television broadcast signal, and a mobile communication signal; synergistic adaptive retransmissions to ensure reliable reception of the data broadcast; data download interface through-air terrestrial digital television broadcasting. 本发明提供了一种协同自适应重发系统,包括地面数字电视广播发射单元、移动通信基站,还包括多频段天线或单频段天线、协同控制单元和移动终端;所述地面数字电视广播信号包括数字多媒体电视广播波和组播, 所述多频段天线,用于辐射移动通信信号和广播信号以及接收移动通信信号;所述协同控制单元,用于控制地面数字电视广播发射单元与移动通信基站的协同关系;所述移动终端,还包括电视接收调谐器单元和解码器单元,用于接收移动通信基站或广播信号发射单元发送的信息以及向移动通信基站反馈接收活动信息。 The present invention provides a synergistic adaptive retransmission system including terrestrial digital television broadcasting transmitting unit, a mobile communication base station, further comprising a single-band antenna or multi-band antenna, the cooperative control unit and a mobile terminal; the terrestrial digital television broadcast signal comprising digital multimedia broadcast and multicast wave, the multi-band antenna for radiating a mobile communication signal and broadcast signal, and the received mobile communication signal; the cooperative control unit for controlling the digital terrestrial television broadcasting transmitting unit and a mobile communication base station synergy; the mobile terminal, the television receiver further comprising a tuner unit and a decoder unit for receiving information of the mobile communication base station or a broadcast signal transmitting unit transmits and receives the feedback information to a mobile communication base station activity. 移动终端可以是单天线单接收通道终端,也可以是多天线多接收通所述地面数字电视广播发射单元,还用于在地面数字电视广播频段上发送移动通信用下行链路信号。 The mobile terminal antenna may be a single mono channel receiving terminal, may be a multi-antenna multi-pass receiving the digital terrestrial television broadcasting transmitting unit is further configured to send a downlink signal for mobile communications in the digital terrestrial television broadcasting band. 所述协同关系包括同步控制、码流分配控制、自动重发控制。 The synergistic relationship comprises a synchronous control stream distribution control, automatic retransmission control. 所述地面数字电视广播发射单元是DMB-T/H系统。 The terrestrial digital television broadcasting transmitting unit is a DMB-T / H system. 所述协同控制单元,还包括数据缓存和重发处理单元、复接控制单元和自适应重发控制单元;所述数据缓存和重发处理单元对通过现有系统中的复接器、成形滤波和数/模变换、中频变换和中频滤波发送的数据进行缓存,并根据所述自适应重发控制单元的控制确定是否重发以及重发哪些缓存数据;所述复接控制单元决定所述数据缓存和重发处理单元中需要重发的数据的发送时间片,并根据所述发送时间片决定重发数据发送时刻;所述自适应重发控制单元根据移动终端发来的重发请求确定重发哪些 The cooperative control unit further comprises a data buffer and the retransmission processing unit, the control unit and the adaptive multiplexing retransmission control unit; the data buffer and the retransmission processing units in the system through the existing multiplexer, shaping filter and digital / analog conversion, intermediate frequency conversion and iF filtering data sent by the cache, and determines whether the retransmission buffer and which data retransmission control in accordance with the adaptive retransmission control unit; said control means determines said multiplexing data transmission buffer and the retransmission time slice processing unit needs to be retransmitted data, and determines based on the transmission time slice retransmission data transmission timing; the adaptive retransmission control unit determines the weight of the mobile terminal according to a retransmission request sent by What made

数据和以何种策略重发。 Data and what strategy to retransmit. 所述地面数字电视广播发射单元是DVB-T系统。 The terrestrial digital television broadcasting transmitting unit is a DVB-T system. 所述所述协同控制单元,还包括重发缓存器和自动重发控制: 所述重发缓存器,用于对需要通过地面数字电视广播发射单元发送的编码前数据进行缓存;所述自动重发控制,根据终端发来的重发请求确定重发数据的编码方式和重发策略,对所述纠错编码、映射、帧适配进行控制,使之按照重发数据需要的纠错编码方式、调制方式、帧格式发送出去。 The cooperative control unit further comprises a retransmission buffer and automatic retransmission control: the retransmission buffer for encoded data to be transmitted before the digital terrestrial television broadcasting transmitter buffer unit; said automatic repeat transmission control, according to the terminal determines a retransmission request sent by encoding the retransmission data and retransmission policy, the error correction coding, mapping, frame adaptation control, so that the error correction coding according to need retransmission data , modulation scheme, frame format transmitted. 本发明提供了一种协同自适应重发方法,用于根据移动终端的请求重发数据,有以下歩骤:歩骤81、通过移动通信频段向网络发送自动重发请求信号;歩骤82、通过移动通信频段或者地面数字电视广播频段向所述移动终端重发地面数字电视广播频道中发送的数据。 The present invention provides a synergistic adaptive retransmission method for retransmitting data according to a request of the mobile terminal, the following step ho: ho step 81, an automatic retransmission request transmission signal to the network through the mobile communications band; ho step 82, retransmission data digital terrestrial television broadcast channels transmitted to the mobile communication terminal through a mobile terrestrial digital television broadcasting frequency band or bands. 所述步骤82中,发送数据所使用的频段,由协同控制单元根据需要重发的数据量的大小、地面数字电视广播频段的空闲状况和移动通信频段的空闲情况来选择。 In step 82, the frequency band used for transmitting data, the cell selected according to the size of the free case of the amount of data required to be retransmitted, terrestrial digital television broadcasting idle condition and a mobile communication frequency band by the cooperative control. 当重发数据量很小且所述移动通信频道空闲时,使用所述移动通信频道向所述移动终端发送重发数据;当重发数据量很大且所述地面数字电视广播频段空闲时,使用所述地面数字电视广播频段向所述移动终端发送重发数据。 When a small amount of data and the retransmission of the mobile communication channel is idle, a mobile communication channel using the retransmission data is transmitted to the mobile terminal; and when the amount of retransmission of data is large and the digital terrestrial television broadcasting band idle, transmits retransmission data to the mobile terminal using the digital terrestrial television broadcasting band. 所述步骤82中,移动通信基站采用如下两种方式之一向终端发送终端请求重发的数据:方式1:当终端以时间片的方式接收数字电视广播信号时,基站在终端接收数字电视广播信号的空闲时间内,终端接收数字广播的通道切换到专用业务信道使用的频谱上,基站向终端重发数据;这种方式适用于具有单通道和双通道的终端;方式1:当终端以时间连续的方式接收数字电视广播信号时,终端使用其多个(两个或者两个以上)中的一个接收通道在专用业务信道使用的频谱上接收基站发来的数字电视广播重发数据;这种方式适用于具有两个或者两个以上接收通道的终端。 In step 82, the mobile communication station using one of the following two ways to send the terminal to the terminal requesting retransmission of data: Embodiment 1: When the terminal is in a time-sliced ​​digital television broadcast signal is received, the base station in the terminal receiving a digital television broadcast signal within the idle time, the terminal receiving a digital broadcast channel switching to a dedicated traffic channel using the spectrum, the base station retransmits data to the terminal; this method is applicable to a terminal having a single channel and a dual channel; mode 1: when the terminal in a temporally successive a receiving channel when receiving a digital television broadcast signal mode, which terminal uses a plurality of (two or more) receives the base station sent on a dedicated traffic channel using the spectrum of the digital television broadcast retransmission data; this way applied to the terminal having two or more receiving channels. 所述步骤82中,移动通信基站在向终端发送需要重发的数字电视广播 In step 82, the digital mobile communication base station transmits to the terminal needs to be retransmitted television broadcast

信号之前,先向终端发出信道指示信息,该信息指示将要重发的数字电视广播信号使用的具体信道。 Before signal Xianxiang terminal sends a channel indication information, information indicating that the particular channel to be retransmitted digital television broadcast signal is used. 所述步骤81之前还包括同歩歩骤。 Further comprising a step before step 81 with ho ho. 所述同歩步骤是的起始时刻保持对应关系,用于使所述地面数字电视广播频道中发送的移动通信数据和移动通信无线帧实现同歩。 Ho of the step is the same start time holding the corresponding relationship, for causing the mobile communication wireless communication data frame and a mobile digital terrestrial television broadcast channels transmitted in one and the same ho. 所述对应关系是地面数字电视广播发射单元正交频分复用无线帧的起始时刻和移动通信无线帧的起始时刻相同,并且地面数字电视广播发射单元正交频分复用无线帧的结束时刻和移动通信无线帧的结束时刻相同。 The correspondence is digital terrestrial television broadcasting transmitting unit an orthogonal frequency division multiplexed with the same starting time and the starting time of the mobile communication radio frame of the radio frame, and terrestrial digital television broadcasting transmitting unit orthogonal frequency-division multiplexing of radio frames the same end time and end time of the mobile communication radio frame. 所述对应关系是地面数字电视广播发射单元正交频分复用无线帧的起始时刻和移动通信无线帧的起始时刻之间相差整数个时隙,并且地面数字电视r播发射单元正交频分复用无线帧的结束时刻和移动通信无线帧的结束时刻之间相差所述整数个时隙。 The correspondence is digital terrestrial television broadcasting transmitting unit difference of an integer number of orthogonal frequency division multiplexing time slots between the starting time and the starting time of the radio frame of the mobile communication radio frame, and quadrature digital terrestrial television broadcasting transmitting unit r by the integer frequency division multiplexing time slots between the end time of the radio frame and the end time of the mobile communication radio frame. 所述地面数字电视广播发射单元正交频分复用无线帧的起始时刻由如下具体歩骤确定:歩骤151、在所述地面数字电视广播发射单元正交频分复用无线帧的起始列的正交频分复用符号持续时间内插入码分多址信号;歩骤152、通过相关运算获取码分多址信号的相关峰值;歩骤153、所述相关峰值减去所述相关峰值与所述地面数字电视广播发射单元正交频分复用无线帧的起始时刻的时间差Tcorr得到所述地面数字电视广播发射单元正交频分复用无线帧的起始时刻。 The terrestrial digital television broadcasting transmitting unit starting an orthogonal frequency division multiplex radio frame timing is determined by the following specific step ho: ho step 151, the terrestrial digital TV broadcasting transmission unit from an orthogonal frequency division multiplex radio frame orthogonal frequency division multiplexing start column insert with the CDMA signal symbol duration; ho step 152, obtaining a correlation peak by correlation calculation code division multiple access signal; ho step 153, the correlation peak by subtracting the correlation the peak terrestrial digital television broadcasting transmitting orthogonal frequency-division multiplexing unit starting time of radio frame to obtain the time difference Tcorr terrestrial digital television broadcasting transmitting unit orthogonal frequency division multiplexing start time of the radio frame. 本发明所述系统便于在现有系统架构上实现,所述方法既可用于多种地面数字电视广播系统与多种蜂窝移动通信系统之间的协同工作。 The system of the present invention is easy to implement in the existing system architecture, said method both for collaborative work between various terrestrial digital television broadcasting system with a plurality of cellular mobile communication systems. 使用本发明所述的方法可以快速构建出宽带多媒体无线系统。 The method of the present invention is used to quickly build a wireless broadband multimedia system. 附图说明图1是TD-SCDMA物理帧结构示意图;图2是现有技术中地面数字电视广播发射系统结构和帧结构示意图;图3是本发明提供的协同自适应重发系统组成示意图;图4是本发明提供的协同自适应重发系统的同歩关系示意图; BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic diagram of the physical frame structure of TD-SCDMA; FIG. 2 is a schematic view of the ground structure and a frame structure broadcast digital television transmission system in the prior art; FIG. 3 that the present invention provides a synergistic composition of an adaptive retransmission system schematic; FIG. 4 that the present invention provides a synergistic system made adaptive retransmission schematic relationship with ho;

图5是本发明提供的带有自动重发和PN序列与OFDM符号复接器的地面数字电视广播发射单元示意图;图6是本发明提供的带有自动重发功能的地面数字电视广播发射单元示意图。 FIG 5 is a terrestrial digital television broadcasting transmitting unit with automatic retransmission schematic PN sequence and the OFDM symbol multiplexer of the present invention provides; FIG. 6 of the present invention is to provide a terrestrial digital television broadcasting transmitting unit with automatic retransmission function schematic diagram. 具体实施方式下面结合附图,对本发明做进一歩的详细描述。 DETAILED DESCRIPTION OF THE DRAWINGS The invention will be described into detail in a ho. 本发明第一个实施例给出了协同自适应重发系统,如图3所示,包括:地面数字电视广播发射单元308、移动通信基站307、协同控制单元309、多频段天线301和移动终端306,其中,多频段天线301可以进一部分为地面数字电视广播发射天线、移动通信基站天线,地面数字电视广播发射天线、 移动通信基站天线可以是共址安装的,也可以是一体化设计的。 A first embodiment of the present invention gives a synergistic adaptive retransmission system, shown in Figure 3, comprising: a terrestrial digital television broadcasting transmitting unit 308, a mobile communication base station 307, cooperative control unit 309, a multi-band antenna 301 and the mobile terminal 306, wherein the multi-band antenna 301 can enter a part of digital terrestrial television broadcast antenna, a mobile communication base station antenna, terrestrial digital television broadcast antenna, the mobile communication base station antenna may be mounted co-located, or may be an integrated design. 地面数字电视广播发射单元308在地面数字电视广播频段304上向移动终端306发送下行链路信号302,移动终端306通过电视接收调协器通道接收下行链路信号302,在发现下行链路信号302中存在错误时,移动终端306 通过移动通信频谱305发射请求重发信号310,请求重发信兮310经过多频段天线301 (或者经过多频段天线301包含的移动通信基站天线)被移动通信基站307接收。 Terrestrial digital television broadcasting transmitting unit 308 transmits a downlink signal to the mobile terminal 306 in the digital terrestrial television broadcasting band 304 302, the mobile terminal 306 through the tuner of the television receiver channel receives the downlink signal 302, downlink signal 302 found when there is an error, the mobile terminal 306 through a mobile communication spectrum transmitter 305 the retransmission request signal 310, requesting re-transmission Xi 310 through multiband antenna 301 (or via the mobile communication base station antenna 301 comprises a multi-band antenna) of the mobile communication base station 307 receive. 移动通信基站307既可以通过使用地面数字电视广播频段304的下行链路信号302重发数据,也可以通过使用移动通信频谱305的下行链路303重发数据。 Mobile communication base station 307 may be through the use of terrestrial digital TV broadcast band downlink signal retransmission data 304 is 302, the frequency spectrum 305 may be a mobile communication by using a downlink retransmission data 303. 协同控制单元309控制地面数字电视广播发射单元308、移动通信基站307之间的协同关系,包括:同步控制、码流分配控制、自动重发控制等。 Cooperative control unit 309 controls the terrestrial digital television broadcasting transmitting unit 308, the synergy between the mobile communication base station 307, comprising: a synchronous control stream distribution control, automatic retransmission control. 协同控制单元309接收通信基站307发射的下行同歩信号和广播信息, 从而实现在通信基站307所发射信号的帧同歩和时隙同歩,同时,协同控制单元309接收地面数字电视广播发射单元308发射的信号,并且测量通信基站307所发射信号与地面数字电视广播发射单元308发射的信号的同步关系, 测量方法如图4所示。 Cooperative with ho downlink control signal receiving unit 309 and the broadcast information transmitted communication base station 307, thereby achieving the same frame and slot ho ho 307 with a communication station of the transmitted signal, while the cooperative control unit 309 receives a terrestrial digital television broadcasting transmitting unit transmitted signal 308, the base station 307 and measuring communication signal synchronous relationship with digital terrestrial television broadcasting signal transmitting unit 308 transmitting the emitted measuring method shown in FIG. 终端306在需要重传数据时,通过通信基站307向协同控制单元309发送自动重发请求信号ARQ (ARQ: Automatic Repeat Request),协同控制单元309根据自动重发请求信号ARQ的到达频谱和ARQ指示的重发数据量, 来决定是采用通信基站307还是采用地面数字电视广播发射单元308重发数据。 Terminal 306 when necessary retransmitted data via the communication base station 307 to the cooperative control unit 309 transmits an automatic retransmission request signal ARQ (ARQ: Automatic Repeat Request), cooperative control unit 309 according to the arrival spectrum automatic retransmission request signal ARQ and ARQ Indicator the amount of retransmission data to the base station 307 determines the communication is the use of terrestrial digital television broadcasting or transmitting unit 308 retransmission data. 在使用通信基站307重发数据时,通信基站307从数据存储和重发处理单元中取出数据按照协同控制单元309规定的方式使用移动通信频谱305的下行链路303重发数据。 When the base station 307 using the communication retransmission data, retrieve data from the communication station 307 and the retransmission data storage processing unit 305 using the mobile communication spectrum downlink retransmission data link 303 the control unit 309 in a manner coordinated predetermined. 移动终端306带有工作在移动通信频段的接收机和发射机,并且带有工作在地面数字电视广播频段的数字电视调协器和解码器。 The mobile terminal 306 with a transmitter and receiver operate in a mobile communications bands, and the operation of the digital television with a tuner and a decoder in the terrestrial digital television broadcasting band. 终端可以是任何一种标准的终端,如WCDMA、 TD-SCDMA、 GSM、 CDMA2000、 PHS等, 调协器是可以复合任何一种地面数字电视广播标准的调协器,如DVB-H/T, DMB-T/H。 The terminal may be any of the standard terminal, such as WCDMA, TD-SCDMA, GSM, CDMA2000, PHS, etc., a composite tuner is any standard digital terrestrial television broadcasting tuner, such as DVB-H / T, DMB-T / H. 地面数字电视广播发射单元308可以是复合任何--"种地面数字电视广播系统标准的发射单元,包括:美国的ATSC、欧洲的DVB-T/H、日本的ISDB、 中国的DMB-T/H;移动通信基站307可以是任何一种移动通信系统,包括GSM、 WCDMA、 TD-SCDMA、 PHS等。当应用于地面数字电视广播单频组网时,为了保证邻小区之间的移动通信业务的独立性,需要在地面数字电视广播频道时分插入基于CDMA的移动通信信号。本发明的第二个实施例给出的协同自适应重发系统的同步方法如图4所示,具体方式是:地面数字电视广播频道中发送的移动通信数据的起始时刻和移动通信无线帧的起始时刻保持确定的对应关系。协同自适应重发系统中的同步方法如图4所示,图中,移动通信无线帧401由子帧402a、 402b组成,子帧402a、 402b又分别包括若干个时隙(如图中的TS0〜TS6)。地面数字电视广播发射单元O Terrestrial digital television broadcasting transmitting unit 308 may be any complex - "the transmitting unit species terrestrial digital TV broadcasting system standards, including: US ATSC, the European DVB-T / H, the ISDB in Japan, China, DMB-T / H ; mobile communication base station 307 may be any mobile communication system, including GSM, WCDMA, TD-SCDMA, PHS, etc. when applied to terrestrial digital television broadcast single frequency network, in order to ensure that mobile communication traffic between neighbor cells independence, the need to insert a digital terrestrial television broadcast channel signal time division CDMA-based mobile communications second embodiment of the present invention given cooperative adaptive retransmission system synchronization method shown in Figure 4, the specific way: the ground starting time starting time of the mobile communication data transmission digital television broadcast channels and the mobile communication wireless holding frame corresponding to the determined relationship cooperative synchronization method of adaptive retransmission system shown in figure 4, the drawing, mobile communication a radio frame 401 by the sub-frame 402a, 402b composed of subframes 402a, 402b, respectively, and comprises a plurality of slots (TS0~TS6 figure). terrestrial digital television broadcasting transmitting unit O FDM无线帧403由若干正交频分复用调制(OFDM)的符号404组成,在图3给出的地面数字电视广播发射天线、移动通信基站天线共址的情况下,为了实现地面数字电视广播发射单元与移动通信在空中接口上的同歩,地面数字电视广播发射单元OFDM 无线帧403的起始时刻406和移动通信无线帧401的起始时刻407要保持严格的对应关系。地面数字电视广播发射单元OFDM无线帧403的起始时刻406和移动通信无线帧401的起始时刻407要保持严格的对应关系可以采用多种形式:一种对应关系是地面数字电视广播发射单元OFDM无线帧403的起始时刻406 FDM radio frame 403 by a plurality of orthogonal frequency division multiplex modulation (OFDM) is composed of 404 symbols, transmit digital terrestrial television broadcasting antenna given in Figure 3, the case where the mobile communication base station antenna co-located, terrestrial digital television broadcasting in order to achieve the mobile communication unit and transmitting the same over the air interface ho, terrestrial digital television broadcasting transmitting unit 403 OFDM radio frame starting time and the starting time 406 of the mobile communication radio frames 401 to 407 to maintain a strict corresponding relationship. DTTB OFDM wireless frame transmitting unit 406 and the start time 403 of the mobile communication radio frame start time of 407 to 401 to maintain strict correspondence relationship can take many forms: a corresponding relation with terrestrial digital TV broadcast OFDM wireless frame transmitting unit 403 starting time 406

和移动通信无线帧401的起始时刻407是同一个时刻,并且所述OFDM无线帧403的结束时刻408和所述移动通信无线帧401的结束时刻409是同一个时亥ij; 一种对应关系是地面数字电视广播发射单元OFDM无线帧403的起始时刻406和移动通信无线帧401的起始时刻407之间相差整数个时隙(即若干个TS0的时间宽度),并且所述OFDM无线帧403的结束时刻408和所述移动通信无线帧401的结束时刻409之间也相差同样的时隙个数;为了确定地面数字电视广播发射单元OFDM无线帧403的起始时刻406, 一种方法是在地面数字电视广播发射单元OFDM无线帧403的起始列的OFDM符号持续时间内插入CDMA信号,通过相关运算获取CDMA信号的相关峰值410,相关峰值410与OFDM无线帧403的起始时刻406的时间差Tcorr是通过预先设计伪随机噪声码(PN)码的插入方式来保证为一个决定的值。 And the starting time 401 of the mobile communication radio frame 407 is the same time and end time of the OFDM radio frame 403 and end time 408 of the frame 401 of the mobile communication radio 409 is a time-Hai ij of the same; a corresponding relation with terrestrial digital television broadcasting transmitting unit 403 OFDM radio frame start time 406 and the mobile communication radio frame starting time 401 of the phase difference between the integer number of time slots 407 (i.e., the time width of a plurality of TS0), and the OFDM radio frame the end time 408 and end time 403 of the mobile communication radio frame 401 is also a difference between the number of same time slot 409; to determine the terrestrial digital broadcast OFDM radio transmission unit 403 of the frame start time 406, a method is starting column of OFDM symbol OFDM radio transmitting unit in the digital terrestrial television broadcast frame 403 is inserted into the CDMA signal duration, obtaining a correlation peak by correlation operation of the CDMA signal 410, the correlation peak 410 of the OFDM radio frame start time 403 406 Tcorr is to ensure that the time difference value is determined by a pre-designed insert mode pseudorandom noise codes (PN) code. 一种现有的插入方式见图2 (b),在帧体211的前面插入PN序列作为帧同步信号,该帧同步信号和帧体211 —起构成信号帧212。 One existing way to insert shown in Figure 2 (b), the PN sequence is inserted in front of the frame 211 as a frame synchronizing signal, the frame synchronization signal and a frame body 211 - 212 from the signal frame configuration. 接收机在本地产生一个和帧体内插入的PN序列相同的伪随机码,并使用该伪随机码对电视接收信号进行相关搜索,相关峰值出现在OFDM无线帧403的起始时刻406附近,和OFDM无线帧403的起始时刻406相差的时间是Tcorr。 The receiver locally generates the same frame body and inserting a pseudo-random code PN sequence, and use the television receiver for pseudorandom code signal related searches, the correlation peak appears near the beginning of the time frame 403 in OFDM radio 406, and an OFDM 403 radio frame starting time 406 is the time difference Tcorr. 在搜索出来相关峰值410中减去吋间差Tcorr就是OFDM无线帧403的起始时刻406,根据前面所述的地面数字电视广播发射单元OFDM无线帧403 的起始时刻406和移动通信无线帧401的起始吋刻407的对应关系,就可以准确知道移动通信无线帧401的起始时刻407,从而可以迅速同步到移动通信的空中接口上。 Searching for the correlation peak by subtracting out the difference between Tcorr 410 inch OFDM radio frame start time is 403 of 406, the frame start time 406 and 403 according to the aforementioned mobile communication wireless terrestrial digital TV broadcast OFDM wireless frame transmitting unit 401 starting inch engraved correspondence relationship 407, you can accurately know the start time of the mobile communication radio frames 401 407, and thus is able to synchronize on the air interface to mobile communication. 为了从地面数字电视广播发射单元OFDM无线帧403中发送更多的移动通信的信息,可以把移动通信的小区广播信息以扩频的方式叠加到OFDM无线帧403中, 一种方式是在地面数字电视广播发射单元OFDM无线帧403 的起始部分405内插入扩频信号,插入扩频信号的方式可以是单载波扩频信号,也可以是基于OFDM的扩频信号。 In order to transmit more information in a mobile communication frame 403 from the terrestrial digital television broadcasting OFDM radio transmission unit, the cell can be broadcast in a spread spectrum mobile communication information is superimposed to the OFDM radio frame 403, in a manner terrestrial digital television broadcasting transmitting OFDM radio frame unit 403 is inserted into the initial portion of the spread signal 405, may be inserted into the spread signal is a single carrier way spread-spectrum signal, or may be an OFDM based spread spectrum signal. 本发明的第三个实施例给出了带有自适应重发功能的地面数字电视广播发射单元。 A third embodiment of the present invention provide terrestrial digital television broadcasting transmitting unit with an adaptive retransmission function. 该地面数字电视广播发射单元是在现有的地面数字电视广播发射单元——DMB-T/H系统,如图2 (a)所示,中加入了数据缓存和重发处理单元501,复接控制单元502、自动重发控制单元503组成,如图5所示。 The terrestrial digital television broadcasting transmitting unit in a conventional terrestrial digital television broadcasting transmitting unit --DMB-T / H system, FIG. 2 (a), the buffer is added and the retransmission data processing unit 501, multiplexing The control unit 502, an automatic retransmission control unit 503, as shown in Fig.

其中,数据缓存和重发处理单元501对通过复接器207、成形滤波和D/A 变换208、 IF变换和IF滤波209发送的数据进行缓存,并根据自动重发控制单元503的控制来确定是否重发以及重发哪些缓存数据;自动重发控制单元503根据移动终端306发来的重发请求确定重发那些数据和以什么样的策略重发;复接控制单元502为数据缓存和重发处理单元501中需要重发的数据的发送时间片进行决定,根据发送时间片决定重发数据的发送吋刻。 Wherein the data buffer and the retransmission processing unit 501 of the data through the multiplexer 207, shaping filter, and D / A converter 208, IF conversion and IF filtering transmission 209 is cached, and is determined according to control automatic retransmission control section 503 whether to retransmit and which cache data retransmission; automatic retransmission control unit 503 determines the retransmission of those data and what kind of policy a retransmission according to a retransmission request to the mobile terminal 306 sent; multiplexing control unit 502 for the data cache and re transmission time slice processing unit 501 needs to send the retransmission data is determined, it determines the retransmission data is transmitted according to the transmission time moment inch sheet. 在实际应用中,所述数据缓存和重发处理单元501,复接控制单元502、 自动重发控制单元503可以包含在协同控制单元309中。 In a practical application, the data buffer and the retransmission processing unit 501, the multiplexing control unit 502, an automatic retransmission control unit 503 may be included in the cooperative control unit 309. 一种现有的地面数字电视广播发射单元一一DVB-T系统的基本功能单元如图6所示,包括:纠错编码602、映射603、帧适配604、 IFFT605、插入保护间隔606、 D/A607,数据通过纠错编码602、映射603、帧适配604、 插入导频和控制参数608、 IFFT 605、插入保护间隔606、 D/A607处理后送往发射通道。 The basic functional unit of a conventional terrestrial digital television broadcasting transmitting unit eleven DVB-T system is shown in Figure 6, comprising: an error correction encoder 602, mapping 603, frame adaptation 604, IFFT605, inserts a guard interval 606, D / A607, by error correction coding data 602, map 603, the adapter frame 604, and the pilot insertion control parameters 608, IFFT 605, inserts a guard interval 606, D / A607 sent to the transmission channel post-processing. 一种带有自动重发功能的地面数字电视广播发射单元是在上述现有系统中加入了:重发缓存器601、自动重发控制609。 Terrestrial digital television broadcasting transmitter with an automatic unit for retransmission function is added to the above-described conventional system: retransmission buffer 601, automatic retransmission control 609. 重发缓存器601对需要通过地面数字电视广播发射单元发送的编码前数据进行缓存,当需要重发时,再把这些数据中需要重发的部分通过纠错编码602、映射603、帧适酉己604、 IFFT605、插入保护间隔606、 D/A607,数据通过纠错编码602、映射603、帧适配604、插入导频和控制参数608、IFFT605、 插入保护间隔606、 D/A607处理后送往发射通道。 Retransmission buffer 601 before the encoded data to be transmitted via a terrestrial digital television broadcasting transmitting cache unit, when the retransmission is required, then the data retransmission is required by error correction coding section 602, mapping 603, appropriate unitary frame hexyl 604, IFFT605, inserts a guard interval 606, D / A607, by error correction coding data 602, map 603, the adapter frame 604, and the pilot insertion control parameters 608, IFFT605, inserts a guard interval 606, D / A607 evacuation process to transmit channel. 自动重发控制609根据终端发来的重发请求确定重发数据的编码方式和重发策略,并根据重发数据需要的编码方式和重发策略对纠错编码602、映射603、帧适配604进行控制,使之按照重发数据所需要的纠错编码方式、 调制方式、帧格式发送出去。 Automatic retransmission control terminal 609 according to a retransmission request sent by a retransmission determining coding strategy data and retransmission, and retransmission data according to an encoding and retransmission policy requires the error correction coded 602, mapping 603, frame adaptation 604 is controlled so that the modulation scheme, frame format transmitted by an error correction encoding scheme retransmission data required. 在实际应用中,所述重发缓存器601、自动重发控制609可以包含在协同控制单元309中。 In a practical application, the retransmission buffer 601, automatic retransmission control 609 may be included in the cooperative control unit 309. 本发明的第四个实施例给出了一种协同自动重发方法。 A fourth embodiment of the present invention provide a synergistic automatic retransmission method. 对地面数字电视广播频道中发送的数据实现重发的方法包括:第1歩,通过移动通信频段向网络发送自动重发请求信号; 第2歩,通移动通信频段,或者通过地面数字电视广播频段,向终端重发地面数字电视广播频道中发送的数据。 Implemented method of retransmission data terrestrial digital television broadcast channels transmitted comprising: a first ho, send automatic retransmission request signal to the network through the mobile communications band; 2 ho, through a mobile communications band or digital terrestrial television broadcasting band , retransmission of broadcast channels transmit digital television data to a ground terminal. 移动通信基站采用如下两种方式之一向终端发送终端请求重发的数据: 方式1:当终端以时间片的方式接收数字电视广播信号时,基站在终端接收数字电视广播信号的空闲时间内,终端接收数字广播的通道切换到专用业务信道使用的频谱上,基站向终端重发数据;这种方式适用于具有单通道和双通道的终端;方式2:当终端以时间连续的方式接收数字电视广播信号时,终端使用其多个(两个或者两个以上)中的一个接收通道在专用业务信道使用的频谱上接收基站发来的数字电视广播重发数据;这种方式适用于具有两个或者两个以上接收通道的终端。 Mobile communication base station using one of the following two ways to send the terminal to the terminal requesting retransmission of data: Embodiment 1: When the terminal is in a time-sliced ​​digital television broadcast signal is received, the base station during the idle time of the terminal receiving a digital television broadcast signal, the terminal receiving a digital broadcast channel switching to a dedicated traffic channel using the spectrum, the base station retransmits data to the terminal; this method is applicable to a terminal having a single and dual channel; mode 2: when the terminal in a temporally continuous manner receive digital television broadcasting signal, which terminal uses a plurality of (two or more) of a receiving base station receiving channel sent by the digital television broadcast spectrum in a dedicated traffic channel using a data retransmission; in this way applicable to two or two or more channels of the receiving terminal. 移动通信基站在向终端发送需要重发的数字电视广播信号之前,先向终端发出信道指示信息,该信息指示将要重发的数字电视广播信号使用的具体信道。 The mobile communication base station transmits retransmission is required before the digital television broadcast signal to the terminal, the terminal issue Xianxiang channel indication information, the information indicating a specific channel to be retransmitted digital television broadcast signal is used. 判断需要重发方式,根据需要重发的数据量大小、地面数字电视广播频道的空闲情况、移动通信频段的空闲情况来选择重发数据使用的通道;当重发数据量很小且移动通信频道空闲时,使用移动通信频道向移动终端发送重发数据;当重发数据量很大且地面数字电视广播频道的空闲时,使用地面数字电视广播频道发送重发数据。 Analyzing mode needs to be retransmitted, the retransmission data is selected using the channel as required amount of retransmitted data size, the digital terrestrial television broadcasting channel is idle, the idle situation of the mobile communications band; small amount of data when retransmission of a mobile communication channel, and when idle, the mobile communication channel transmits retransmission data to the mobile terminal; when large amounts of data and the retransmission idle channel of digital terrestrial television broadcasting, retransmission data is transmitted using a digital terrestrial television broadcast channels. 综上所述,本发明所述系统便于在现有系统架构上实现,所述方法既可用于多种地面数字电视广播系统与多种蜂窝移动通信系统之间的协同工作。 In summary, the system of the present invention is easy to implement in the existing system architecture, said method both for collaborative work between various terrestrial digital television broadcasting system with a plurality of cellular mobile communication systems. 使用本发明所述的方法可以快速构建出宽带多媒体无线系统。 The method of the present invention is used to quickly build a wireless broadband multimedia system. 本领域的技术人员在不脱离权利要求书确定的本发明的精神和范围的条件下,还可以对以上内容进行各种各样的修改。 Those skilled in the art without departing from the spirit and scope of the claims of the invention being determined, various modifications may be about the above. 因此本发明的范围并不仅限于以上的说明,而是由权利要求书的范围来确定的。 The scope of the present invention is not limited to the above description, but rather determined by the scope of the claimed requirements.

Claims (17)

1. 一种协同自适应重发系统,包括地面数字电视广播发射单元、移动通信基站,其特征在于,还包括多频段天线、协同控制单元和移动终端;所述多频段天线,用于辐射移动通信信号和广播信号以及接收移动通信信号;所述协同控制单元,用于控制地面数字电视广播发射单元与移动通信基站的协同关系;所述移动终端,还包括电视接收调谐器单元和解码器单元,用于接收移动通信基站或广播信号发射单元发送的信息以及向移动通信基站反馈接收活动信息。 1. A synergistic adaptive retransmission system including terrestrial digital television broadcasting transmitting unit, a mobile communication base station, characterized further comprising a multi-band antenna, the cooperative control unit and a mobile terminal; the multiband antenna for radiating movement a communication signal and broadcast signal, and the received mobile communication signal; the cooperative control unit for controlling the digital terrestrial television broadcasting synergy between the transmission unit and the mobile communication base station; said mobile terminal, further comprising a television receiver tuner unit and the decoder unit , a base station or a mobile communication means for receiving a broadcast signal transmitting unit receives the information transmitted and the feedback information to a mobile communication base station activity.
2. 如权利要求1所述的协同自适应重发系统,其特征在于,所述地面数字电视广播发射单元,还用于在地面数字电视广播频段上发送移动通信用下行链路信号。 2. Cooperative adaptive retransmission system according to claim 1, characterized in that, the terrestrial digital television broadcasting transmitting unit is further configured to send a downlink signal for mobile communications in the digital terrestrial television broadcasting band.
3. 如权利要求1所述的协同自适应重发系统,其特征在于,所述协同关系包括同歩控制、码流分配控制、自动重发控制。 Collaborative claim adaptive retransmission of the system 1, characterized in that, with the synergistic relationship comprises control ho, stream allocation control, automatic retransmission control.
4. 如权利要求1所述的协同自适应重发系统,其特征在于,所述地面数字电视广播发射单元是DMB-T/H系统。 4. The synergistic adaptive retransmission system according to claim 1, wherein said digital terrestrial television broadcasting transmitter unit is a DMB-T / H system.
5. 如权利要求1所述的协同自适应重发系统,其特征在于,所述协同控制单元,还包括数据缓存和重发处理单元、复接控制单元和自适应重发控所述数据缓存和重发处理单元对通过现有系统中的复接器、成形滤波和数/模变换、中频变换和中频滤波发送的数据进行缓存,并根据所述自适应重发控制单元的控制确定是否重发以及重发哪些缓存数据;所述复接控制单元决定所述数据缓存和重发处理单元中需要重发的数据的发送时间片,并根据所述发送时间片决定重发数据发送时刻;所述自适应重发控制单元根据移动终端发来的重发请求确定重发哪些数据和以何种策略重发。 5. The synergistic adaptive retransmission system according to claim 1, characterized in that, the cooperative control unit further comprises a data buffer and the retransmission processing unit, and multiplexing the control unit controls the data-adaptive retransmission buffer and retransmission processing unit existing in the system multiplexer, the data shaping filter and digital / analog conversion, intermediate frequency conversion and iF filtering transmission cache, and determines whether a weight according to the adaptive retransmission control of the control unit and which send a retransmission data buffer; the multiplexed transmission control unit determines the time slice buffer and the retransmission data processing unit needs to be retransmitted data, and determines the retransmission data transmission timing based on the transmission time slice; the said adaptive retransmission control unit which determines a retransmission data and retransmission policy according to which the mobile terminal sent the retransmission request.
6. 如权利要求1所述的协同自适应重发系统,其特征在于,所述地面数字电视广播发射单元是DVB-T系统。 6. The synergistic adaptive retransmission system according to claim 1, wherein said digital terrestrial television broadcasting transmitter unit is a DVB-T system.
7. 如权利要求1所述的协同自适应重发系统,其特征在于,所述协同控制单元,还包括重发缓存器和自动重发控制:所述重发缓存器,用于对需要通过地面数字电视广播发射单元发送的编码前数据进行缓存;所述自动重发控制,根据终端发来的重发请求确定重发数据的编码方式和重发策略,对所述纠错编码、映射、帧适配进行控制,使之按照重发数据需要的纠错编码方式、调制方式、帧格式发送出去。 7. A synergistic adaptive retransmission system according to claim 1, wherein said cooperative control means further includes a retransmission buffer and automatic retransmission control: the retransmission buffer, need for terrestrial digital television broadcasting transmitting encoded data units transmitted before the cache; the automatic retransmission control, the retransmission coding scheme is determined and retransmission policy data, the error correction coding, mapping sent by the terminal according to the retransmission request, frame adaptation is controlled, so that the modulation scheme, frame format transmitted by an error correction encoding scheme need retransmission data.
8. --种协同自适应重发方法,用于根据移动终端的请求重发数据,其特征在于,有以下歩骤:歩骤81、通过移动通信频段向网络发送自动重发请求信号; 步骤82、通过移动通信频段或者地面数字电视广播频段向所述移动终端重发地面数字电视广播频道中发送的数据。 8. - Synergistic adaptive retransmission method for retransmitting data according to a request of the mobile terminal, wherein, following step ho: ho step 81, the transmission band automatic retransmission request signal to the network through the mobile communication; Step 82, retransmission data digital terrestrial television broadcast channels transmitted to the mobile communication terminal through a mobile terrestrial digital television broadcasting frequency band or bands.
9. 如权利要求8所述的协同自动重发方法,其特征在于,所述步骤82中,移动通信基站采用如下方式向终端发送终端请求重发的数据:当终端以时间片的方式接收数字电视广播信号时,基站在终端接收数字电视广播信号的空闲吋间内,终端接收数字广播的通道切换到专用业务信道使用的频谱上,基站向终端重发数据;这种方式适用于具有单通道和双通道的终端。 9. A synergistic automatic retransmission method according to claim 8, wherein said step 82, the mobile communication base station to the terminal in the following way terminal requests retransmission of data: when the terminal receives a digital to time slices when the television broadcast signal, among the base stations in idle inches terminal receiving a digital television broadcast signal, a terminal receiving a digital broadcast channel switching to a dedicated traffic channel using the spectrum, the base station retransmits data to the terminal; this method is applicable to single-channel and a dual-channel terminal.
10. 如权利要求8所述的协同自动重发方法,其特征在于,所述步骤82中,移动通信基站采用如下方式向终端发送终端请求重发的数据:当终端以吋间连续的方式接收数字电视广播信号时,终端使用其多个接收通道中的一个在专用业务信道使用的频谱上接收基站发来的数字电视广播重发数据;这种方式适用于具有两个或者两个以上接收通道的终端。 10. A synergistic automatic retransmission method according to claim 8, wherein said step 82, the mobile communication base station to the terminal in the following way terminal requests retransmission of data: when the terminal receives a continuous manner in inches between when the digital television broadcast signal, the receiving terminal uses a plurality of channels which a base station receives a digital television broadcast sent by retransmission data on the dedicated traffic channel spectrum used; in this way applicable to two or more receiving channels terminal.
11. 如权利要求8所述的协同自动重发方法,其特征在于,所述歩骤82中,移动通信基站在向终端发送需要重发的数字电视广播信号之前,先向终端发出信道指示信息,该信息指示将要重发的数字电视广播信号使用的具体信道;发送数据所使用的频段,由协同控制单元根据需要重发的数据量的大小、地面数字电视广播频段的空闲状况和移动通信频段的空闲情况来选择。 11. A synergistic automatic retransmission method according to claim 8, characterized in that the ho step 82, the mobile communication base station prior to transmission to the terminal needs to be retransmitted digital television broadcast signal, Xianxiang terminal sends indication information channel the information instructed to be retransmitted digital television broadcast signal using a specific channel; frequency band used for transmitting data by the cooperative control unit according to the idle condition of the size of the amount of data required to be retransmitted, terrestrial digital television broadcasting frequency band and a mobile communications bands free situation to choose.
12. 如权利要求11所述的协同自动重发方法,其特征在于,当重发数据量很小且所述移动通信频道空闲时,使用所述移动通信频道向所述移动终端发送重发数据;当重发数据量很大且所述地面数字电视广播频段空闲时, 使用所述地面数字电视广播频段向所述移动终端发送重发数据。 12. A synergistic automatic retransmission method according to claim 11, wherein, when a small amount of data and the retransmission of the mobile communication channel is idle, a mobile communication channel using the retransmission data is transmitted to the mobile terminal ; when large and heavy amount of data sent to the digital terrestrial television broadcasting band idle, the use of the digital terrestrial television broadcasting band retransmission data is transmitted to the mobile terminal.
13. 如权利要求8所述的协同自动重发方法,其特征在于,所述步骤81 之前还包括同歩步骤。 13. Collaborative according to claim 8 automatic retransmission method, wherein said step further comprises the step of prior to ho with 81.
14. 如权利要求13所述的协同自动重发方法,其特征在于,所述同歩步骤是的起始时刻保持对应关系,用于使所述地面数字电视广播频道中发送的移动通信数据和移动通信无线帧实现同步。 14. A synergistic automatic retransmission method according to claim 13, wherein said step of starting ho same time retaining a correspondence relationship, the mobile communication data channels in the terrestrial digital television broadcasting and transmitted The mobile communication radio frame synchronization.
15. 如权利要求14所述的协同自动重发方法,其特征在于,所述对应关系是地面数字电视广播发射单元正交频分复用无线帧的起始时刻和移动通信无线帧的起始时刻相同,并且地面数字电视广播发射单元正交频分复用无线帧的结束时刻和移动通信无线帧的结束时刻相同。 15. A synergistic automatic retransmission method according to claim 14, wherein said corresponding relationship is a terrestrial digital television broadcasting transmitting orthogonal frequency-division multiplexing unit time of the radio frame and the start of the mobile communication radio frame start the same time, and terrestrial digital television broadcasting transmitting orthogonal frequency-division multiplexing unit end timing of a radio frame and the end time is the same as the mobile communication wireless frames.
16. 如权利要求14所述的协同自动重发方法,其特征在于,所述对应关系是地面数字电视广播发射单元正交频分复用无线帧的起始时刻和移动通信无线帧的起始时刻之间相差整数个时隙,并且地面数字电视广播发射单元正交频分复用无线帧的结束时刻和移动通信无线帧的结束时刻之间相差所述整数个吋隙。 16. A synergistic automatic retransmission method according to claim 14, wherein said corresponding relationship is a terrestrial digital television broadcasting transmitting orthogonal frequency-division multiplexing unit time of the radio frame and the start of the mobile communication radio frame start a difference between an integer number of time slots, and terrestrial digital television broadcasting transmitting unit orthogonal frequency division by the integer two-inch gap between the end time of the multiplexed radio frames and the end time of the mobile communication radio frame.
17. 如权利耍求15或16所述的协同自动重发方法,其特征在于,所述地面数字电视广播发射单元正交频分复用无线帧的起始时刻由如下具体步骤确定:步骤151、在所述地面数字电视广播发射单元正交频分复用无线帧的起始列的正交频分复用符号持续时间内插入码分多址信号;歩骤152、通过相关运算获取码分多址信号的相关峰值;歩骤153、所述相关峰值减去所述相关峰值与所述地面数字电视广播发射单元正交频分复用无线帧的起始时刻的时间差Tcorr得到所述地面数字电视广播发射单元正交频分复用无线帧的起始时刻。 17. The method of automatic retransmission request playing synergistic claim 15 or 16, characterized in that, the terrestrial digital television broadcasting transmitting unit starting an orthogonal frequency division multiplex radio frame timing is determined by the following specific steps: Step 151 , the ground orthogonal frequency division multiplexing start column frequency division multiplexed radio frame transmitting unit quadrature digital television broadcasting signal is inserted within a CDMA symbol duration; ho step 152, acquired by the correlation calculation code division multiple correlation peak signal; ho step 153, the correlation peak of the correlation peak by subtracting the terrestrial digital television broadcasting transmitting unit an orthogonal frequency division multiplexing difference Tcorr starting time of the radio frame to obtain digital terrestrial television broadcasting transmitting unit starting an orthogonal frequency division multiplex radio frame timing.
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