CN101420769A - Multi-domain wireless broadcast multicast network system and method based on coordination technique - Google Patents

Multi-domain wireless broadcast multicast network system and method based on coordination technique Download PDF

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CN101420769A
CN101420769A CN 200810239298 CN200810239298A CN101420769A CN 101420769 A CN101420769 A CN 101420769A CN 200810239298 CN200810239298 CN 200810239298 CN 200810239298 A CN200810239298 A CN 200810239298A CN 101420769 A CN101420769 A CN 101420769A
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domain
multicast
broadcast
network
relay
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CN 200810239298
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CN100593355C (en )
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洋 刘
彭木根
王文博
魏东岩
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北京邮电大学
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Abstract

A multi-domain radio broadcast multicast network system based on a cooperative communication technology and a method thereof. The system comprises a basic overlay domain, a relay enhancement domain and an expanded service domain. The basic overlay domain composed of a radio broadcast multicast single frequency network is taken as a core, the overlay range of the radio broadcast multicast single frequency network is expanded by the relay enhancement domain so as to realize seamless overlay of the radio broadcast multicast single frequency network and a homogeneous radio broadcast multicast network and accomplish a fusion of the radio broadcast multicast single frequency network and an heterogeneous radio broadcast multicast network. The system acquires a diversity-multiplexing gain of radio transmission by the cooperative communication technology, thus solving a bottle-neck problem of radio broadcast data service transmission among different domains. The method and the system can expand the overlay range of the radio broadcast multicast network, enhance system capacity and service quality, realize convenient networking, and satisfy high-quality and high-speed transmission demand of the next generation of the radio broadcast multicast.

Description

一种基于协同技术的多域无线广播组播网络系统及方法 A multi-area wireless network broadcast multicast system and method based on cooperation technique

技术领域 FIELD

本发明涉及一种针对广播组播业务传输的基于协同技术的多域无线广播组播网络系统及方法,属于无线广播和组播通信技术领域。 The present invention relates to a broadcast multicast-based wireless network system and method for coordinated multi-domain technique, it belongs to the wireless communications technologies broadcast and multicast transmissions for broadcast and multicast service.

背景技术 Background technique

无线广播组播是一种通过网络资源共享的方式从一个数据源向多个目标传送相同数据的技术,随着移动通信技术的发展,基于移动终端的无线广播组播业务发展迅速。 A radio multicast network transmitted through the sharing of resources from one data source to a plurality of target data of the same technology, with the development of mobile communication technology, wireless broadcast and multicast service based on the mobile terminal rapidly. 目前,主要有三种类型的网络能够提供各种不同类型的广播组播业务: Currently, there are three types of networks can provide various types of broadcast and multicast service:

(1 )利用数字地面广播系统实现,包括欧洲的DVB-H ( Digital Video Broadcasting-Handheld)标准、日本的单频段转播(ISDB-T )标准和我国提出的中国移动多媒体广播(CMMB )标准。 (1) implementation, including Europe's DVB-H (Digital Video Broadcasting-Handheld) standard, Japan's single-band broadcasting (ISDB-T) standard proposed by our country and China Mobile Multimedia Broadcasting (CMMB) standard using digital terrestrial broadcasting system.

(2)基于卫星网络实现,包括韩国已经商用的S-DMB (Satellite digital multimedia broadcasting )和欧洲Alcatel主导的S-DMB。 (2) satellite-based networks, including South Korea has commercial S-DMB (Satellite digital multimedia broadcasting) and Europe, Alcatel-led S-DMB.

(3 )利用蜂窝移动通信网络实现,主要是基于全球标准化组织3GPP提出的多媒体广播组播业务技术(MBMS)和3GPP2的广播与组播业务技术(BCMCS )c (3) the use of cellular mobile communication networks, mainly based on the global standardization organization 3GPP multimedia broadcast multicast service proposed technique (MBMS) and 3GPP2 Broadcast and Multicast Service Technology (BCMCS) c

虽然现在已经存在有多种不同类型的无线广播组播系统,但是,它们的共同问题是普遍存在覆盖盲区。 Although there have been many different types of wireless broadcast and multicast systems, however, their common problem is widespread coverage holes. 目前通常的解决方法是增加补点器或者增加基站密度,然而这会导致相当高的布网成本,特别是如果用户数量并没有以同样的速度增加的话,现有的这些解决方法是成本太高,经济效益欠佳。 At present the usual solution is to increase up point or a base station density increases, however, this leads to relatively high costs of network deployment, especially if the number of users and does not increase at the same rate, these conventional solutions is the high cost , poor economic efficiency. 此外,为了实现全网覆盖,必须大量地设置基站等设施,这对实际系统的网络设计也是一个挑战。 In addition, in order to achieve full network coverage, must be provided for a large number of base stations, network design of this system is also a real challenge.

其次,在目前的无线通信系统中,通常采用直放站来扩展覆盖范围,然而,随着无线自组织网络理论的发展,为了便于快捷组网和增强无线链路的抗毁性等,现在已经提出了一种具有多跳特性的集中式控制网络体系结构,中继技术在其中占有重要地位。 Secondly, in the current wireless communication systems, typically employ repeaters to extend coverage, however, with the development of wireless ad-hoc network theory, in order to facilitate fast and enhanced network survivability of wireless links and the like, has now proposed centralized control network architecture having a multi-hop characteristics, in which the relay technology plays an important role. 虽然用于扩展网络覆盖范围的中继站是从传统蜂窝移动通信系统中的直放站发展过来的,但是,在下一代移动通信系统中的中继站, 其工作模式不仅有传统的直放站的信号转发功能,更重要的是其协作式的通信 Although used to extend network coverage of the relay station from conventional cellular mobile communication system over the development of repeaters, however, the next generation mobile communication system, a relay station, not only its mode of operation of the conventional signal repeater forwarding function, more important is its collaborative communications

模式,该功能已经被认为是高速率、高覆盖要求下最可行的改进。 Mode, this function has been considered to be a high rate, high coverage of the most viable improvement request.

再次,从技术和系统演进发展来看,网络的互联互通已成为必然趋势。 Again, from the evolution of technology and systems development, network interconnection has become an inevitable trend. 但是,目前大部分的无线广播组播技术和系统还是沿用筒单的点对多点的网络拓朴结构,既没有利用中继节点来有效拓展网络结构,也没有把具有各种制式的无线广播组播网络有机结合在一起实现异构无缝融合,更没有把协同通信技术应用到无线广播组播网络中来。 However, most of the current radio technologies and systems still make multicast network topology of the point to multipoint single-cylinder, neither the use of a relay node to effectively expand the network structure, not the standard radio having various multicast networks together with seamless integration of heterogeneous, but did not apply to the cooperative communication in a wireless broadcast network for multicast. 因此,如何将无线广播组播网络与现有的以及将来新兴的同构、异构网络相融合将是下一代网络研究的重点。 So, how will the wireless broadcast multicast network with existing and future emerging homogeneous, heterogeneous network integration will be the focus of next-generation network research. 此外,协同通信技术已被认为是下一代无线通信的关键技术,如何将协同技术应用于广播网络,以便获得单个无线广播组播网络无法提供的"涌现"增益(这里的"涌现" 增益是指由于协同通信而提供的分集和复用增益等),也是业内科技人员非常关注的焦点i果题。 In addition, cooperative communication technology has been considered the key to the next generation of wireless communications technology, how collaborative technology for broadcast networks, in order to obtain "the emergence of" Gain (where "the emergence of" a single wireless broadcast multicast network can not provide gain means Because of the diversity of cooperative communication and provide focus and multiplexing gain, etc.), but also of great concern to the industry's scientific and technical personnel problem i fruit.

总之,基于上述问题,对于目前存在的多种类型的无线广播组播系统,从 In summary, based on the above-mentioned problems, for various types of wireless broadcast and multicast systems currently exist, from

技术和系统演进来看,需要解决如下问题: Technology and the evolution of the system point of view, the need to address the following questions:

(1 )如何引入无线中继和无线多跳技术,增加无线广播组播网络的自组织网络能力,以满足便捷组网和应急通信的需求; (1) how the introduction of wireless multi-hop relay and wireless technology, the ability to increase self-organizing wireless network broadcast multicast network to meet the needs of convenient networking and emergency communications;

(2 )如何把这些不同类型的无线广播组播网络无缝地结合在一起,实现互联互通和融合; (2) how to seamlessly combining these different types of wireless networks with multicast broadcast, to achieve interoperability and integration;

(3)如何釆用无线协同通信技术,对无线空中接口技术进行增强,以提高无线广播组播网络性能。 (3) How to preclude the use of wireless cooperative communication, wireless air interface technology enhanced to improve the performance of the wireless network broadcast and multicast.

发明内容 SUMMARY

有鉴于此,本发明的目的是基于当前网络存在的缺点,结合最新的通信技术而提供一种基于协同通信技术的多域无线广播组播网络系统及方法,本发明网络系统采用具有多域特性的无线广播组播网络结构,实现便捷组网和异构融合,实现各种无线广播组播技术的无缝融合、自适应扩展覆盖范围和提高服务质量,并采用协同通信技术,以满足下一代无线广播组播高质量高速率的传输需求。 In view of this, object of the present invention is based on the current network disadvantage exists, in conjunction with the latest communication technologies to provide a multi-domain wireless network broadcast multicast system and method based on the cooperative communication, the present invention employs a network system having a multi-domain characteristics the multicast radio network architecture, for convenient integration of heterogeneous networking and seamless integration of the various wireless broadcast multicast, adaptive extend coverage and improve service quality, and the use of cooperative communication, in order to meet the next generation the demand for wireless transmission of high-quality high-rate multicast broadcast.

为了达到上述目的,本发明提供了一种基于协同技术的多域无线广播组播 To achieve the above object, the present invention provides a multi-domain wireless broadcast multicast technology based cooperative

网络系统,其特征在于:所述系统包括基本覆盖域、中继增强域和扩展服务域, 其中: Network system, characterized in that: said system comprises substantially covering the field, domain and a relay enhanced extended service domain, wherein:

基本覆盖域由无线广播組播单频网组成,以实现无线广播组播业务的同构 Substantially covering the field multicast broadcast single frequency network the radio composition, to enable wireless broadcast multicast service isomorphic

覆盖功能; Overlay function;

中继增强域以设置在所述无线广播组播单频网覆盖区域内的中继节点为核心,由这些中继节点的覆盖区域构成中继增强域,以实现对所述无线广播组播单频网覆盖范围的扩展;并通过这些中继节点,在其它同构和/或异构网络中也能实现单频网中的广^"组播业务,以及实现该单频网与其他网络的互if关互通和融合; Enhanced relay provided in the radio domain multicast broadcast single frequency network coverage area of ​​the relay node in the core, constituting the reinforcing field from these relay coverage area of ​​the relay node, to implement the wireless broadcast multicast single SFN coverage extension range; and these relay nodes, in other homogeneous and / or heterogeneous networks can be realized in a single frequency network wide ^ "multicast service, and realize the single frequency network with other networks if mutual interconnection and integration oFF;

扩展^务域包括与所述无线广播组播单频网同构和异构的网络,分别组成同构扩展服务域和异构扩展服务域;扩展服务域中的网络通过中继增强域中的同构或异构中继节点,接收所述无线广播组播单频网中的广播组播业务,实现所述无线广播组播单频网与其它同构和/或异构网络的互联互通和融合。 ^ Extended service domain comprises the wireless multicast broadcast single frequency network homogeneous and heterogeneous networks are composed of homogeneous and heterogeneous extended service domain extended service domain; extended service domain via a relay enhanced network domain homogeneous or heterogeneous relay node receives the multicast broadcast multicast service single frequency radio network, the radio broadcast to achieve interoperability multicast single frequency network with other homogeneous and / or heterogeneous networks and integration.

所述基本覆盖域中的无线广播组播单频网是专设的无线广播组播网络,或者是基于蜂窝移动通信系统的广播组播网络; Substantially covers the domain multicast radio network is a dedicated single frequency radio network multicast, broadcast or multicast network based on a cellular mobile communication system;

所述中继增强域的中继节点包括同构中继节点和异构中继节点:同构中继节点的转发过程采用与基本覆盖域中的单频网相同的通信模式,完成对无线广播组播单频网的同构覆盖;异构中继节点的转发过程采用其它通信技术,完成与异构无线广播组播网络融合; The relay comprises a relay node domain reinforcing homogeneous relay node and a relay node isomers: forwarding relay node configuration and substantially covering the same domain using single frequency network the same communication mode to complete the radio isomorphic overlay multicast SFN; isomers relay node forwarding employ other communications techniques, complete integration of heterogeneous wireless network broadcast and multicast;

所述扩展服务域包括与所述基本覆盖域中的无线广播组播单频网同构和异构的网络,这些网络在地理位置上位于无线广播组播单频网覆盖范围内,或者处于无线广播组播单频网覆盖范围之外。 The extended radio broadcast multicast service single domain comprises the frequency domain substantially covers homogeneous and heterogeneous network of networks that is located on a single multicast radio frequency network geographic coverage area, or in the radio multicast broadcast single frequency network out of coverage.

所述中继增强域的两种中继节点都具有协同通信功能,以利用协同通信技术来获得单个无线广播组播网络无法提供的分集和复用增益,以及扩展无线广播组播网络的覆盖范围。 The enhanced relay node domain having two cooperative relay communication function utilizing cooperative communication technology to obtain diversity gain and multiplexing a single wireless network can not provide the multicast broadcast, multicast, and broadcast networks extend wireless coverage .

为了达到上述目的,本发明还提供了一种基于协同通信技术的多域无线广 To achieve the above object, the present invention also provides a multi-domain wireless communication technology based on broad cooperative

播组播网络系统的信息传输方法,其特征在于,该方法包括下列操作步骤: Multicast broadcast information transmission network system, characterized in that the method comprises the following steps:

(l)初始化操作:先用时分方式将时间资源分别分配给基本覆盖域、中继增强域和扩展服务域,其时隙的划分粒度取决于实际传输带宽和业务最小传输速率要求; (L) initialization: the first with a time division manner time resources are allocated to the basic coverage domain, the domain and a relay enhanced service domain extension, which slot is divided particle size depends on the actual traffic transmission bandwidth and minimum rate;

(2 )基本覆盖域中的单频网基站在其所属时隙内发送广播组播信息,此时中继增强域中的中继节点和基本覆盖域内的终端接收该广播组播信息; (2) substantially covering the field SFN broadcast multicast base station transmits information within their respective slots, when the relay node enhanced relay terminal domain substantially covers the art and receives the broadcast multicast information;

(3)中继增强域内的中继节点在其所属时隙内转发步骤(2)中接收到的广播组播信息,处于中继增强域内的终端和扩展服务域内的终端与其它设备接收该广播组播信息; (3) The relay node enhanced relay broadcast domain multicast forwarding step (2) is received, the terminal is a terminal with other devices and the extension service within the art relay enhanced in their respective slots receiving the broadcast multicast information;

(4 )广播组播信息在扩展服务域内的终端与其它设备之间传输;然后返回执行步骤(2)的操作。 (4) between the broadcast multicast service termination extension transmission with other devices in the art; then returns to step (2) operation.

所述系统中位于基本覆盖域内侧的终端距离基站较近,能够准确接收来自基站的信息;所述系统中位于基本覆盖域内靠近外侧的终端,虽然距离基站较远,但其距离中继节点较近,能够接收本小区以及邻小区中继节点发送的相同广播组播业务信息,获得分集增益,从而正确接收源信息; The substantially cover system located within the terminal from the base station side is close, accurately receiving information from a base station; the system is located near the region substantially covers the outside of the terminal, although far from the base station, but the relay node than the distance near, the present cell and can receive the same neighbor cell information broadcast multicast service transmitted by the relay node, to obtain diversity gain, so that the source information correctly received;

所述系统中位于中继增强域内的终端,因其能够接收到本小区中继节点和邻小区中继节点发送的相同的广播组播信息,获得分集增益,也能正确接收源信息; The relay system is located enhanced terminal domain, its is possible to receive the same broadcast multicast cell of the present node and the relay node sends the relay neighbor cells to obtain diversity gain, source information can be received correctly;

所述系统中位于扩展服务域内的终端与其它设备,能够选择接收来自中继增强域内的中继节点转发的信息,从而获得分集增益,提高信号接收质量。 The extension terminals in the system with other devices located in the service domain, can be selected relay node receives information from a relay enhanced forwarded domain, thereby obtaining a diversity gain, to improve signal reception.

所述系统中位于域间交叠区域的终端会因基本覆盖域、中继增强域和扩展服务域内的数据传输过程的正交性而能够接收到多个域传送的同一信息,获得协同分集增益,大大改善接收信号质量。 The system is located in the overlapping area inter-terminal domain due to substantially cover the domains and domain enhancement data relay transmission of the extension service domain orthogonality can receive the same information transmitted by the plurality of domains, cooperative diversity gain is obtained , greatly improve the quality of the received signal. 本发明方法的特色和创新之处是: (1 )创新地提出多域无线广播组播网络的概念,把整个广播组播系统分成基本覆盖域、中继增强域和扩展服务域。 Features and innovations of the present invention, the method is: (1) the innovative concept of multi-domain multicast wireless broadcast network, the broadcast and multicast whole system is divided into basic coverage domain, and the domain extension relay enhanced service domain. 基于无线中继技术实现了无线广播网络的便捷组网,扩展了覆盖范围和提高了系统容量。 The wireless relay network technology enables convenient wireless broadcast network, extended coverage and system capacity is improved based.

(2 )本发明网络系统中同时采用同构中继节点和异构中继节点组网,支持 (2) in a network system according to the present invention, while using the same configuration of the relay node and relay nodes heterogeneous network support

同构和异构的无线接入系统,促进了异构无线广播组播网络的互联互通和融合。 Homogeneous and heterogeneous wireless access systems, promote the interoperability and integration of heterogeneous wireless network broadcast and multicast.

(3 )本发明网络系统中的中继站不再是传统概念的直放站,而是作为一个增强的接收机,既能对中继的数据进行功率放大,还能采用多天线和编码等技术提高终端接收信号质量。 (3) The network system according to the present invention is no longer a repeater relay station of a traditional concept, but as an enhanced receiver, both of the relay power-amplifies the data, and also multi-antenna technology to improve coding terminal received signal quality.

(4 )该系统把协同通信原理和无线中继技术应用到无线广播组播网络,提出了多域协同的新思想。 (4) the application of the system and the radio relay principles cooperative communication technology to wireless broadcast multicast network, a multi-domain synergistic ideas.

总之,本发明系统能够与传统的蜂窝移动通信系统或新兴的无线宽带接入系统(包括无线局域网、无线城域网等)相结合,同时还支持同构和异构的无线接入系统,因此,可以预见,在未来的无线接入网融合中,本发明基于协同技术的多域无线广播组播网络结构及组网方法具有广泛的应用前景。 In summary, the system of the present invention can be combined with the conventional cellular mobile communication system and emerging wireless broadband access systems (including wireless local area networks, wireless metropolitan area network, etc.), and also supports a wireless access system of homogeneous and heterogeneous, so , it can be expected in the future the radio access network integration, the present invention has a wide range of applications based on multi-domain wireless broadcast and multicast network structure networking method cooperation technique.

附图说明 BRIEF DESCRIPTION

图1是本发明基于协同技术的多域无线广播组播网络系统结构组成示意图。 FIG 1 of the present invention is a wireless broadcast multicast cooperative multi-domain network system composed Based FIG. 图2是本发明基于协同技术的多域无线广播组播网络系统中各个域之间时隙分配示意图。 FIG 2 is a schematic view of the present invention is based on the allocated time slots between the multi-domain network system cooperative wireless broadcast multicast technology each domain.

图3是本发明基于协同技术的多域无线广播组播网络系统信息传输方法流程图。 FIG 3 is a flowchart illustrating a multi-domain wireless broadcast multicast information transmission network system of the present invention Collaborative art.

具体实施方式 detailed description

为使本发明的目的、技术方案和优点更加清楚,下面结合附图对本发明作进一步的详细描述。 To make the objectives, technical solutions, and advantages of the invention more apparent, the accompanying drawings The present invention will be further described in detail with. 目前,已经存在多种无线广播组播网络结构,为了能够简化网络设计,实现便捷通信,同时把异构无线广播组播网络甚至异构宽带蜂窝移动等无线网络都能够有机地结合在一起,本发明创新地提出了一种基于协同技术的多域无线广播组播网络系统,它是由基本覆盖域、中继增强域和扩展服务域三部分组成。 At present, there are various wireless broadcast multicast network architecture, in order to simplify the network design, for convenient communication, while the heterogeneous wireless networks even heterogeneous multicast broadcast cellular mobile broadband wireless networks can be combined organically, according to the present innovative invention proposes a multi-domain wireless broadcast multicast network system based collaboration technology, it is made substantially cover the domains and domain relay enhanced three parts extended service domains.

参见图1,具体介绍该网络的结构组成,它以无线广播组播单频网为核心, 通过中继增强域扩展该无线广播组播单频网的覆盖范围,并实现对同构无线广播组播网络的无缝覆盖以及与异构无线广播组播网络的融合。 Referring to Figure 1, specifically describes the structure of the network is composed, it multicast broadcast single frequency network the wireless core, a relay enhanced by extending the radio coverage domain multicast broadcast single frequency network, and to realize homogeneous radio group seamless coverage broadcast networks and the integration of heterogeneous wireless broadcast and multicast networks. 其中: among them:

基本覆盖域是以无线广播组播单频网的基站为中心,其范围为:各个基站周围的终端能正常接收到该基站发送的广播组播业务的区域。 Domain is substantially cover the base station radio broadcast multicast SFN center, which is in the range of: each terminal around the base station normally receives the broadcast multicast service from the base station area. 基本覆盖域的目的是完成和实现无线广播组播业务的同构基本覆盖功能。 Object field is substantially complete coverage and wireless broadcast multicast service coverage substantially homogeneous function. 基本覆盖域中的无线广播组单频网是专门的无线广播组播网络,或者是基于蜂窝移动通信系统的广播组播网络。 Radio coverage domain substantially set SFN is dedicated radio network multicast, broadcast or multicast network based on a cellular mobile communication system.

中继增强域以设置在单频网覆盖区域内、能够正确接收并解调基站广播组播业务信号的所有的中继节点共同组成的覆盖区域为其信号接收范围。 Relay Enhanced domain disposed within a single frequency network coverage area can receive and demodulates the received signal coverage area of ​​the base station broadcasts all the relay nodes multicast traffic signal composed of its correct. 由于中继节点在高度和处理能力上的优势,其位置选择以其接收能力为标准进行选择。 Since the advantages in height and the relay node processing capability, its position selecting its reception capability is selected as the standard. 中继增强域的目的有三: 一是扩展单频网的覆盖范围;二是实现对单频网基本覆盖区域以外的同构覆盖;三是完成和实现与其它异构无线广播组播网络的互联互通和融合的功能。 Relay enhanced object domain are threefold: First extend the coverage of single-frequency network; the second is to achieve SFN cover substantially homogeneous coverage area outside; third complete and interconnected with other heterogeneous wireless network broadcast multicast functional interoperability and integration.

为达到以上述目的,中继增强域的中继节点包括两种类型:同构中继节点和异构中继节点。 In order to achieve the above object, a relay enhanced relay node domain include two types: homogeneous and heterogeneous relay node relay node. 同构中继节点的转发过程采用与基本覆盖域中的单频网相同的通信模式,用以扩展广播组播单频网的覆盖范围,并在其它同构网络中实现基本覆盖域中所述单频网中的无线广播组业务;异构中继节点的转发过程采用其它通信技术,用于实现和其它通信技术的广播组播网络的互联互通,完成与异构无线广播组播网络融合。 Isomorphism relay node using substantially the forwarding process SFN coverage domain of the same communication mode to extend the coverage of multicast broadcast single frequency network, and to achieve a substantially homogeneous coverage in other domain network radio service single frequency network group; isomers relay node forwarding process using other communication techniques, for broadcast and multicast network interconnection and other communication technologies to achieve complete fusion and heterogeneous wireless network broadcast and multicast. 通过异构中继节点,能够让单频网的无线广播组播信号很便捷地扩展到室内、车载、家庭等特殊区域,实现便捷的无缝覆盖, 同时实现广域覆盖和局城覆盖的有机结合。 By heterogeneous relay node, allowing wireless signal broadcast multicast single frequency network very easily be extended to special indoor area, car, home, etc., to achieve seamless coverage and convenient, while achieving organic wide-area coverage and coverage of City Bureau combined. 而且,中继增强域的上述两种中继 Further, the two relay-enhanced relay domain

节点都具有协同通信功能,以便利用协同通信技术来获得单个无线广播组播网络无法提供的"涌现"增益,所谓"涌现',是指由于协同通信提供的分集和复用等增益,解决中继节点的无线传输瓶颈。 Cooperative nodes have communication functions, so as to obtain cooperative communication using a single wireless network can not provide the multicast broadcast "emergence" gain, so-called "emerged" refers to the communication provider due to the cooperative diversity gain and multiplexing, etc., to solve the relay wireless transmission bottleneck node.

扩展服务域是由中继增强域中的同构和/或异构的中继节点实现单频网中广播组播业务的分布式和/或集中式网络所组成,用于实现无线广播组播单频网以外的同构扩展域的覆盖和互联互通,以及实现异构无线广播组播网络扩展域 Extended service domain is achieved by the same configuration composed of a relay enhanced domain and / or the relay nodes in heterogeneous SFN broadcast and multicast service distributed and / or centralized network, a wireless broadcast multicast covering the extended configuration and interconnection with the domain other than the single frequency network, a wireless broadcast and multicast heterogeneous network extension domain

的融合和互联互通,并完成包括数字家庭网络、无线对等多跳Ad Hoc网络或无线传感器网络的特殊行业的广播组播需求。 Integration and interoperability, and includes a complete digital home networking, wireless multi-hop peer broadcast multicast needs of specific industries Ad Hoc network or wireless sensor networks.

考虑到扩展服务域是由同构和/或异构的分布式和/或集中式扩展服务域组成,为消除同构中继节点对同构扩展服务域造成干扰,同时保证各个中继节点能够正确接收来自基站的源信息,本发明网络系统中基站发送源信息的过程、 中继节点的转发过程以及扩展服务域内的数据传输过程是采用时分方式对其进行区分的,具体情况可参见图2。 Considering the extension service domain is homogeneous and / or heterogeneous distributed and / or centralized service domains expand, causing interference homogeneous extended service domain to eliminate isomorphic relay node, while ensuring that each relay node can be receiving information from the source base station correctly, the process of the present invention is a network system in the transmission source information of the base station, relay node forwarding process, and a data transmission extension service domain is the use of a time-division manner to distinguish between them, the specific situation see FIG. 2 .

下面参照图3介绍本发明基于协同技术的多域无线广播组播网络结构的组网方法中的信息传输方法,其信息的传输过程包括下列操作步骤: Referring to Figure 3 of the present invention is described in the information transmission method of multi-domain wireless networking method multicast broadcast network structure based collaboration technology, transmission information which includes the following steps:

(l)初始化操作:先用时分方式将时间资源分别分配给基本覆盖域、中继增强域和扩展服务域,其时隙划分的粒度取决于实际传输带宽和业务最小传输速率要求; (L) initialization: the first with a time division manner time resources are allocated to the basic coverage domain, the domain and a relay enhanced extended service domain, which depends on the actual size of the slot dividing the transmission bandwidth requirements and service minimum transmission rate;

(2 )基本覆盖域中的单频网基站在其所属时隙内发送广播组播信息,此时中继增强域中的中继节点和基本覆盖域内的终端接收该信息; (2) substantially covering the field SFN broadcast multicast base station transmits information within their respective slots, when the relay node enhanced relay terminal domain and substantially covers the receiving domain information;

(3)中继增强域内的中继节点在其所属时隙内转发步骤(2)中接收到的广播组播信息,处于中继增强域内的终端和扩展服务域内的终端与其它设备接收该信息; (3) The relay node enhanced relay broadcast domain multicast forwarding step (2) is received, the terminal is a terminal with other devices and the extension service within the art relay enhanced in their respective slots for receiving the information ;

(4 )广播组播信息在扩展服务域内的终端以及其它设备之间传输;然后返回执行步骤(2)的操作。 (4) information transfer between a broadcast multicast service within a terminal extension and other equipment; and then the operation returns to step (2).

本发明网络系统中各个终端与设备接收业务信息的情况如下:位于基本覆盖域内侧的终端,因其距离基站较近,能够准确接收来自基站的信息;位于基本覆盖域内靠近外侧的终端,虽然距离基站较远,但其距离中继节点较近,能够接收本小区以及邻小区中继节点发送的相同广播组播业务信息,获得分集增益,从而正确接收源信息。 The network system of the present invention, each terminal apparatus is received service information as follows: domain located substantially cover the terminal side, close to the base station because the distance can be accurately receiving information from a base station; located near the region substantially covers the outside of the terminal, although the distance remote station, but the relay node near distance, the present cell and can receive the same neighbor cell information broadcast multicast service transmitted by the relay node, to obtain diversity gain, so that the source information is received correctly.

对于位于扩展服务域内的终端与其它设备,由于中继站的选择设置能够保证每个中继节点都能准确接收数据,而扩展服务域内的数据传输过程与基站、 For a terminal with other devices in the extended service domain, data can be correctly received due to the selection of a relay station to ensure that each relay node, and the base station spreading data transmission process service domain,

中继节点传输过程的正交性能够保证扩展域内的终端与其它设备能够选择接收来自中继增强域内的中继节点转发的信息,从而获得分集增益,提高信号接收质量。 Orthogonality transmission relay node with other devices to ensure that the terminal extensions in the art to choose the relay node receives information from a relay enhanced forwarded domain, thereby obtaining a diversity gain, to improve signal reception.

本发明系统中位于域间交叠区域的终端会因基本覆盖域、中继增强域和扩展服务域内的数据传输过程的正交性而能够接收到多个域传送的同一信息,获得协同分集增益,大大改善接收信号质量。 The system of the present invention positioned in a terminal interdomain overlap region due to substantially cover the domains and domain enhancement data relay transmission of the extension service domain orthogonality can receive the same information transmitted by the plurality of domains, cooperative diversity gain is obtained , greatly improve the quality of the received signal.

Claims (6)

  1. 1、一种基于协同通信技术的多域无线广播组播网络系统,其特征在于:所述系统包括基本覆盖域、中继增强域和扩展服务域,其中:基本覆盖域由无线广播组播单频网组成,以实现无线广播组播业务的同构覆盖功能;中继增强域以设置在所述无线广播组播单频网覆盖区域内的中继节点为核心,由这些中继节点的覆盖区域构成中继增强域,以实现对所述无线广播组播单频网覆盖范围的扩展;并通过这些中继节点,在其它同构和/或异构网络中也能实现单频网中的广播组播业务,以及实现该单频网与其他网络的互联互通和融合;扩展服务域包括与所述无线广播组播单频网同构和异构的网络,分别组成同构扩展服务域和异构扩展服务域;扩展服务域中的网络通过中继增强域中的同构或异构中继节点,接收所述无线广播组播单频网中的广播组播业务,实现 1, a multi-domain wireless broadcast multicast system based on cooperative communication network, characterized in that: said system comprises substantially covering the field, domain and a relay enhanced extended service domain, wherein: substantially covers the field of wireless broadcast multicast single SFN composition, to achieve a homogeneous coverage of the functions of the radio broadcast multicast service; enhanced relay provided in the radio domain multicast broadcast single frequency network coverage area of ​​the relay node in the core, to cover these relay node region constitute the relay enhancement domain, to enable the wireless multicast broadcast single frequency network coverage extension range; and these relay nodes, in other homogeneous and / or heterogeneous networks can be realized in a single frequency network broadcast multicast service, as well as to achieve interoperability and integration of the single frequency network with other networks; extended service domain includes the wireless multicast broadcast single frequency network homogeneous and heterogeneous networks are composed of homogeneous extended service domain, and heterogeneous extended service domain; extended service domain via a relay enhanced network homogeneous or heterogeneous relay node domain, the radio receiving multicast broadcast single frequency network broadcast multicast service, to achieve 述无线广播组播单频网与其它同构和/或异构网络的互联互通和融合。 Said wireless multicast broadcast single frequency network with other homogeneous and / or heterogeneous network interoperability and integration.
  2. 2、 根据权利要求1所述的系统,其特征在于:所述基本覆盖域中的无线广播组播单频网是专设的无线广播组播网络,或者是基于蜂窝移动通信系统的广播组播网络;所述中继增强域的中继节点包括同构中继节点和异构中继节点:同构中继节点的转发过程采用与基本覆盖域中的单频网相同的通信模式,完成对无线广播组播单频网的同构覆盖;异构中继节点的转发过程采用其它通信技术,完成与异构无线广播组播网络融合;所述扩展服务域包括与所述基本覆盖域中的无线广播组播单频网同构和异构的网络,这些网络在地理位置上位于无线广播组播单频网覆盖范围内,或者处于无线广播组播单频网覆盖范围之外。 2. The system according to claim 1, characterized in that: substantially covers the domain of radio broadcast multicast single frequency network is a dedicated radio network multicast, broadcast or multicast-based cellular mobile communication system network; enhancement of the relay comprises a relay node domain homogeneous relay node and a relay node isomers: forwarding configuration relay node using the same single frequency network domain substantially covers the same communication mode to complete the homogeneous single multicast radio frequency network coverage; isomers relay node forwarding employ other communications techniques, complete integration of heterogeneous wireless network broadcast and multicast; the extended service domain comprises substantially covering the domain multicast broadcast single frequency network wireless homogeneous and heterogeneous networks, these networks located on a single multicast radio frequency network within the geographic coverage area, or is outside of a wireless multicast broadcast single frequency network coverage.
  3. 3、 根据权利要求1或2所述的系统,其特征在于:所述中继增强域的两种中继节点都具有协同通信功能,以利用协同通信技术来获得单个无线广播组播网络无法提供的分集和复用增益,以及扩展无线广播组播网络的覆盖范围。 3. A system according to claim 1 or claim 2, wherein: said relay enhanced relay node domain having two cooperative communication function, to be obtained using a single cooperative communication network can not provide a wireless broadcast multicast diversity and multiplexing gains, and extended multicast network radio coverage.
  4. 4、 一种基于协同通信技术的多域无线广播组播网络系统的信息传输方法,其特征在于,该方法包括下列操作步骤:(l)初始化操作:先用时分方式将时间资源分别分配给基本覆盖域、中继增强域和扩展服务域,其中时隙的划分粒度取决于实际传输带宽和业务最小传输速率要求;(2 )基本覆盖域中的单频网基站在其所属时隙内发送广播组播信息,此时中继增强域中的中继节点和基本覆盖域内的终端接收该广播组播信息;(3)中继增强域内的中继节点在其所属时隙内转发步骤(2)中接收到的广播组播信息,处于中继增强域内的终端和扩展服务域内的终端与其它设备接收该广播组播信息;(4 )广播组播信息在扩展服务域内的终端和其它设备之间传输;然后返回执行步骤(2)的操作。 4, an information transmission method for a multi-domain wireless broadcast multicast network system based on cooperative communication technology, wherein the method comprises the following steps: (L) initialization: the first with a time division manner time resources are allocated to the base covering the domain, the domain, and a relay enhanced extended service domain, wherein the slot is divided particle size depends on the actual traffic transmission bandwidth and minimum rate; (2) substantially covers the domain base station transmits a broadcast single frequency network within their respective slots multicast, when a relay enhanced relay node terminal domain and domain substantially cover the broadcast receiving multicast information; (3) a relay enhanced relay node domain forwarding step (2) in their respective slot multicast the received broadcast information in the terminal with the other terminal devices and the extension service within the domain to receive the relay-enhanced broadcast multicast information; and (4) the information in the broadcast multicast service termination extension region and other equipment transmission; then, the operation returns to step (2).
  5. 5、 根据权利要求4所述的方法,其特征在于:所述系统中位于基本覆盖域内侧的终端距离基站较近,能够准确接收来自基站的信息;所述系统中位于基本覆盖域内靠近外侧的终端,虽然距离基站较远,但其距离中继节点较近,能够接收本小区以及邻小区中继节点发送的相同广播组播业务信息,获得分集增益,从而正确接收源信息;所述系统中位于中继增强域内的终端,因其能够接收到本小区中继节点和邻小区中继节点发送的相同的广播组播信息,获得分集增益,也能正确接收源信息;所述系统中位于扩展服务域内的终端与其它设备,能够选择接收来自中继增强域内的中继节点转发的信息,从而获得分集增益,提高信号接收质量。 5. The method as claimed in claim 4, wherein: the system is located substantially cover the side of the terminal from the base station within close, accurately receiving information from a base station; substantially covers said system located closer to the outside of the art terminal, although far from the base station, but the relay node near distance, the present cell and can receive the same neighbor cell information broadcast multicast service transmitted by the relay node, to obtain diversity gain, so as to correctly receive source information; said system enhanced located within the relay terminals due to their ability to receive the same multicast information broadcast relay node and a neighbor cell to the present cell of the relay node sends, to obtain diversity gain, can be correctly received source information; in the extended system, the service terminal domain with other devices, capable of receiving the selection information from the relay node forwarding relay enhanced art, thereby obtaining a diversity gain, to improve signal reception.
  6. 6、 根据权利要求4所述的方法,其特征在于:所述系统中位于域间交叠区域的终端会因基本覆盖域、中继增强域和扩展服务域内的数据传输过程的正交性而能够接收到多个域传送的同一信息,获得协同分集增益,大大改善接收信号质量。 6. The method according to claim 4, wherein: the system is located in the overlap region between the domains due to substantially cover the terminal domain, the orthogonality of the data transmission relay enhanced and extended service domain within the process can receive the same information transmitted by the plurality of domains, cooperative diversity gain is obtained, greatly improve the quality of the received signal.
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