CN100593355C - Multi-domain radio broadcasting multicast network system and method based on cooperation technoloyg - Google Patents
Multi-domain radio broadcasting multicast network system and method based on cooperation technoloyg Download PDFInfo
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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 radiotransmission 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 expandthe 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 ofthe next generation of the radio broadcast multicast.
Description
Technical field
The present invention relates to a kind of multi-domain wireless broadcast multicast network system and method, belong to radio broadcasting and cast communication technical field based on coordination technique at the broadcasting multicast service transmission.
Background technology
To be a kind of mode of sharing by Internet resources transmit the technology of identical datas from a data source to a plurality of targets to wireless broadcast multicast, along with the development of mobile communication technology, rapid based on the wireless broadcast multicast business development of portable terminal.At present, mainly contain three types network various dissimilar broadcasting multicast services can be provided:
(1) utilizes the DTB Digital Terrestrial Broadcasting system to realize, comprise DVB-H (Digital VideoBroadcasting-Handheld) standard in Europe, one-segment relay (ISDB-T) standard of Japan and China Mobile multimedia broadcasting (CMMB) standard that China proposes.
(2) realize based on satellite network, comprise S-DMB (Satellite digitalmultimedia broadcasting) and the leading S-DMB of European Alcatel that Korea S is commercial.
(3) utilize cellular mobile communication networks to realize, mainly be based on global standardsization and organize the multimedia broadcast-multicast service technology (MBMS) of 3GPP proposition and broadcasting and the multicast service technology (BCMCS) of 3GPP2.
Though had the wireless broadcast multicast system of number of different types now,, their common issue with is the ubiquity coverage hole.Common solution is to increase to mend the some device or increase base station density at present, yet this can cause the quite high cost of arranging net, if particularly number of users does not increase with same speed, existing these solutions are that cost is too high, and economic benefit is not good enough.In addition, cover in order to realize the whole network, facilities such as base station must be set in large quantities, this network design to real system also is a challenge.
Secondly, in present wireless communication system, usually adopt the repeater to come extended coverage range, yet, development along with the wireless self-organization network theory, for the ease of quick networking with strengthen the survivability etc. of Radio Link, now a kind of centralized Control Network architecture with multi-hop characteristic has been proposed, relaying technique occupies critical role therein.Though be used for the relay station of expanding coverage area of network is to come from the repeater development of legacy cellular mobile communication system, but, relay station in next generation mobile communication system, its mode of operation not only has the signal forwarding function of traditional repeater, the more important thing is the communication pattern of its collaboration type, this function has been considered to two-forty, the high covering requires the most feasible improvement down.
Once more, develop from technology and system evolved, interconnecting of network becomes inexorable trend.But, present most wireless broadcast multicast technology and system still continue to use the network topology structure of simple point-to-multipoint, both do not utilized via node effectively to expand network configuration, the wireless broadcast multicast network with various standards is not organically combined yet and realize the seamless fusion of isomery, more the communication for coordination technology is not applied to the wireless broadcast multicast network.Therefore, how the wireless broadcast multicast network being merged mutually with isomorphism, heterogeneous network existing and that future is emerging will be the emphasis of next generation network research.In addition, the communication for coordination technology has been considered to the key technology of next generation wireless communication, how coordination technique is applied to radio network, so that obtain " emerging in large numbers " gain that single wireless broadcast multicast network can't provide (diversity that provides owing to communication for coordination and spatial multiplexing gain etc. are provided in " emerging in large numbers " gain here), also be the focus problem paid special attention to of scientific and technical personnel in the industry.
In a word, based on the problems referred to above, the polytype wireless broadcast multicast system for present existence from technology and system evolved, need address the problem:
(1) how to introduce wireless relay and wireless multi-hop technology, increase the self-organizing network ability of wireless broadcast multicast network, to satisfy the demand of convenient networking and emergency communication;
(2) how these dissimilar wireless broadcast multicast network seamless combine, realize interconnecting and merging;
(3) how to adopt the wireless cooperation communication technology, the wireless air interface technology is strengthened, to improve the wireless broadcast multicast network performance.
Summary of the invention
In view of this, the objective of the invention is shortcoming based on the current network existence, a kind of multi-domain wireless broadcast multicast network system and method based on the communication for coordination technology is provided in conjunction with the up-to-date communication technology, network system of the present invention adopts the wireless broadcast multicast network configuration with multiple domain characteristic, realize that convenient networking and isomery merge, realize seamless fusion, the self adaptation extended coverage range of various wireless broadcast multicast technology and improve service quality, and adopt the communication for coordination technology, to satisfy the transmission demand of wireless broadcast multicast high-quality two-forty of future generation.
In order to achieve the above object, the invention provides a kind of multi-domain wireless broadcast multicast network system based on coordination technique, it is characterized in that: described system comprises that basic covering domain, relaying strengthen territory and expansion service territory, wherein:
Basic covering domain is made up of the wireless broadcast multicast single frequency network, to realize the isomorphism covering function of wireless broadcast multicast business;
It is core with the via node that is arranged in the described wireless broadcast multicast single frequency network overlay area that relaying strengthens the territory, constitutes relaying by the overlay area of these via nodes and strengthens the territory, to realize the expansion to described wireless broadcast multicast single frequency network coverage; And by these via nodes, in other isomorphism and/or heterogeneous network, also can realize the broadcasting multicast service in the single frequency network, and realize interconnecting and merging of this single frequency network and other networks;
The expansion service territory comprises the network with described wireless broadcast multicast single frequency network isomorphism and isomery, forms isomorphism expansion service territory and isomery expansion service territory respectively; Network in the expansion service territory is by isomorphism or isomery via node in the relaying enhancing territory, receive the broadcasting multicast service in the described wireless broadcast multicast single frequency network, realize interconnecting and merging of described wireless broadcast multicast single frequency network and other isomorphism and/or heterogeneous network.
Wireless broadcast multicast single frequency network in the described basic covering domain is ad hoc wireless broadcast multicast network, or based on the broadcast group broadcast network of cell mobile communication systems;
The via node that described relaying strengthens the territory comprises isomorphism via node and isomery via node: the repeating process of isomorphism via node adopt with basic covering domain in the identical communication pattern of single frequency network, finish isomorphism covering to the wireless broadcast multicast single frequency network; The repeating process of isomery via node adopts other communication technology, finishes and the network integration of heterogeneous wireless broadcast group broadcast;
Described expansion service territory comprise with described basic covering domain in wireless broadcast multicast single frequency network isomorphism and the network of isomery, these networks are positioned at wireless broadcast multicast single frequency network coverage on the geographical position, perhaps be in outside the wireless broadcast multicast single frequency network coverage.
Two kinds of via nodes that described relaying strengthens the territory all have the communication for coordination function, obtain diversity and spatial multiplexing gain that single wireless broadcast multicast network can't provide to utilize the communication for coordination technology, and the coverage of extended wireless broadcast group broadcast network.
In order to achieve the above object, the present invention also provides a kind of information transferring method of the multi-domain wireless broadcast multicast network system based on the communication for coordination technology, it is characterized in that this method comprises following operating procedure:
(1) initialization operation: with time division way time resource is distributed to basic covering domain, relaying enhancing territory and expansion service territory respectively earlier, the granularity of division of its time slot depends on actual transmission bandwidth and professional minimum transmission rate requirement;
(2) the single frequency network base station in the basic covering domain sends broadcast multicast information in the time slot under it, and via node in the territory of relaying enhancing at this moment and the terminal in the basic covering domain receive this broadcast multicast information;
(3) via node that strengthens in the territory of relaying is transmitted the broadcast multicast information that receives in the step (2) in the time slot under it, is in terminal in the relaying enhancing territory and the terminal in the expansion service territory and other equipment and receives this broadcast multicast information;
(4) broadcast multicast information in the expansion service territory terminal and miscellaneous equipment between transmit; Return the operation of execution in step (2) then.
The terminal that is positioned at basic covering domain inboard in the described system is nearer apart from the base station, can accurately receive the information from the base station; Be positioned at the terminal of basic covering domain in the described system near the outside, though far away apart from the base station, it is nearer apart from via node, can receive the identical broadcasts multicast business information that this sub-district and adjacent sub-district via node send, obtain diversity gain, thus correct reception sources information;
Be positioned at the terminal that relaying strengthens the territory in the described system, because of it can receive the identical broadcast multicast information that this sub-district via node and adjacent sub-district via node send, acquisition diversity gain, also correct reception sources information;
Be positioned at the terminal and the miscellaneous equipment in expansion service territory in the described system, can selective reception strengthen the information that the via node in the territory is transmitted, thereby obtain diversity gain, improve signal receiving quality from relaying.
The terminal meeting that is positioned at overlapping region between the territory in the described system can receive the same information that transmit in a plurality of territories because of the orthogonality that basic covering domain, relaying strengthen the data transmission procedure in territory and expansion service territory, the gain of acquisition collaboration diversity improves received signal quality greatly.
Characteristic of the inventive method and innovation part are:
(1) innovation ground proposes the notion of multi-domain wireless broadcast multicast network, and whole broadcast/multicast system is divided into basic covering domain, relaying enhancing territory and expansion service territory.Realized the convenient networking of wireless broadcast network based on the wireless relay technology, expanded coverage and improved power system capacity.
(2) adopt isomorphism via node and the networking of isomery via node in the network system of the present invention simultaneously, support the wireless access system of isomorphism and isomery, promoted interconnecting and merging of heterogeneous wireless broadcast group broadcast network.
(3) relay station in the network system of the present invention no longer is the repeater of traditional concept, but as the receiver of an enhancing, can carry out power amplification to the data of relaying, can also adopt technology such as many antennas and coding to improve the terminal received signal quality.
(4) this system is applied to the wireless broadcast multicast network to communication for coordination principle and wireless relay technology, has proposed the new thought of domain collaborative multi.
In a word, system of the present invention can combine with traditional cell mobile communication systems or emerging wireless broadband access system (comprising WLAN (wireless local area network), wireless MAN etc.), also support the wireless access system of isomorphism and isomery simultaneously, therefore, can predict, in the wireless access network in future merged, the multi-domain wireless broadcast multicast network configuration and the network-building method that the present invention is based on coordination technique were with a wide range of applications.
Description of drawings
Fig. 1 is that the multi-domain wireless broadcast multicast network system structure that the present invention is based on coordination technique is formed schematic diagram.
Fig. 2 the present invention is based in the multi-domain wireless broadcast multicast network system of coordination technique time slot allocation schematic diagram between each territory.
Fig. 3 is the multi-domain wireless broadcast multicast network system information transferring method flow chart that the present invention is based on coordination technique.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
At present, there has been multiple wireless broadcast multicast network configuration, in order to simplify network design, realize convenient communication, simultaneously heterogeneous wireless broadcast group broadcast network even isomery broadband cellular such as being moved at wireless network can both organically combine, the present invention has proposed a kind of multi-domain wireless broadcast multicast network system based on coordination technique with innovating, and it strengthens the territory by basic covering domain, relaying and expansion service territory three parts are formed.
Referring to Fig. 1, specifically introducing the structure of this network forms, it is a core with the wireless broadcast multicast single frequency network, strengthen the coverage that this wireless broadcast multicast single frequency network is expanded in the territory by relaying, and realize to the seamless covering of isomorphism wireless broadcast multicast network and with the fusion of heterogeneous wireless broadcast group broadcast network.Wherein:
Basic covering domain is that the base station with the wireless broadcast multicast single frequency network is the center, and its scope is: the terminal around each base station can normally receive the zone of the broadcasting multicast service that this base station sends.The purpose of basic covering domain is to finish and realize the basic covering function of isomorphism of wireless broadcast multicast business.Radio broadcasting group single frequency network in the basic covering domain is special wireless broadcast multicast network, or based on the broadcast group broadcast network of cell mobile communication systems.
Relaying strengthens the territory to be arranged in the single frequency network overlay area, can correctly to receive and the common overlay area of forming of all via nodes of demodulation base station broadcast multicast service signal is its signal range of receiving.Because the advantage of via node on height and disposal ability, its choice of location is that standard is selected with its receiving ability.The purpose that relaying strengthens the territory has three: one, the coverage of expansion single frequency network; The 2nd, realize the isomorphism beyond the basic overlay area of single frequency network is covered; The 3rd, finish and realize the function that interconnects and merge with other heterogeneous wireless broadcast group broadcast network.
For reaching with above-mentioned purpose, the via node that relaying strengthens the territory comprises two types: isomorphism via node and isomery via node.The repeating process of isomorphism via node adopt with covering domain substantially in the identical communication pattern of single frequency network, in order to the coverage of expansion broadcast group broadcast single frequency network, and in other homogeneous network, realize the radio broadcasting group business in the single frequency network described in the basic covering domain; The repeating process of isomery via node adopts other communication technology, is used to realize and the interconnecting of the broadcast group broadcast network of other communication technology, and finishes and the network integration of heterogeneous wireless broadcast group broadcast.By the isomery via node, can allow the wireless broadcast multicast signal of single frequency network expand to special areas such as indoor, vehicle-mounted, family very easily, realize seamless easily covering, realize that simultaneously wide area covers and the combination of local covering.And, above-mentioned two kinds of via nodes that relaying strengthens the territory all have the communication for coordination function, so that utilize the communication for coordination technology to obtain " emerging in large numbers " gain that single wireless broadcast multicast network can't provide, so-called " emerging in large numbers " is meant because diversity that communication for coordination provides and multiplexing gain, the wireless transmission bottleneck of solution via node of waiting.
The expansion service territory realizes that by the via node of isomorphism in the relaying enhancing territory and/or isomery the distributed and/or centralized network of broadcasting multicast service in the single frequency network is formed, be used to realize the covering of wireless broadcast multicast single frequency network isomorphism extension field in addition and interconnect, and realize the fusion in heterogeneous wireless broadcast group broadcast extension of network territory and interconnect, and finish the broadcast group broadcast demand of the special industry that comprises digital home network, wireless reciprocity multi-hop Ad Hoc network or wireless sensor network.
Consider that the expansion service territory is made up of the distributed and/or centralized expansion service territory of isomorphism and/or isomery, for eliminating the isomorphism via node interference is caused in isomorphism expansion service territory, guarantee that simultaneously each via node can correctly receive the source information from the base station, the base station sends the process of source information in the network system of the present invention, the repeating process and the data transmission procedure in the expansion service territory of via node adopts time division way that it is distinguished, and concrete condition can be referring to Fig. 2.
The present invention is based on the information transferring method in the network-building method of multi-domain wireless broadcast multicast network configuration of coordination technique below with reference to Fig. 3 introduction, its transmission of Information process comprises following operating procedure:
(1) initialization operation: with time division way time resource is distributed to basic covering domain, relaying enhancing territory and expansion service territory respectively earlier, the granularity that its time slot is divided depends on actual transmission bandwidth and professional minimum transmission rate requirement;
(2) the single frequency network base station in the basic covering domain sends broadcast multicast information in the time slot under it, and via node in the territory of relaying enhancing at this moment and the terminal in the basic covering domain receive this information;
(3) via node that strengthens in the territory of relaying is transmitted the broadcast multicast information that receives in the step (2) in the time slot under it, is in terminal in the relaying enhancing territory and the terminal in the expansion service territory and miscellaneous equipment and receives this information;
(4) broadcast multicast information in the expansion service territory terminal and miscellaneous equipment between transmit; Return the operation of execution in step (2) then.
The situation of each terminal and equipment reception business information is as follows in the network system of the present invention: be positioned at the terminal of basic covering domain inboard, and nearer because of it apart from the base station, can accurately receive information from the base station; Be positioned at the terminal of basic covering domain near the outside, though far away apart from the base station, it is nearer apart from via node, can receive the identical broadcasts multicast business information that this sub-district and adjacent sub-district via node send, obtain diversity gain, thus correct reception sources information.
For terminal that is positioned at the expansion service territory and miscellaneous equipment, because the selection of relay stations setting can guarantee that each via node can both accurately receive data, and the orthogonality of data transmission procedure in the expansion service territory and base station, via node transmission course can guarantee that terminal and miscellaneous equipment in the extension field can selective reception strengthen the information that the via node in the territory is transmitted from relaying, thereby the acquisition diversity gain improves signal receiving quality.
The terminal meeting that is positioned at overlapping region between the territory in the system of the present invention can receive the same information that transmit in a plurality of territories because of the orthogonality that basic covering domain, relaying strengthen the data transmission procedure in territory and expansion service territory, the gain of acquisition collaboration diversity improves received signal quality greatly.
Claims (6)
1, a kind of multi-domain wireless broadcast multicast network system based on the communication for coordination technology is characterized in that: described system comprises that basic covering domain, relaying strengthen territory and expansion service territory, wherein:
Basic covering domain is made up of the wireless broadcast multicast single frequency network, to realize the isomorphism covering function of wireless broadcast multicast business;
It is core with the via node that is arranged in the described wireless broadcast multicast single frequency network overlay area that relaying strengthens the territory, constitutes relaying by the overlay area of these via nodes and strengthens the territory, to realize the expansion to described wireless broadcast multicast single frequency network coverage; And by these via nodes, in other isomorphism and/or heterogeneous network, also can realize the broadcasting multicast service in the single frequency network, and realize interconnecting and merging of this single frequency network and other networks;
The expansion service territory comprises the network with described wireless broadcast multicast single frequency network isomorphism and isomery, forms isomorphism expansion service territory and isomery expansion service territory respectively; Network in the expansion service territory is by isomorphism or isomery via node in the relaying enhancing territory, receive the broadcasting multicast service in the described wireless broadcast multicast single frequency network, realize interconnecting and merging of described wireless broadcast multicast single frequency network and other isomorphism and/or heterogeneous network.
2, system according to claim 1 is characterized in that:
Wireless broadcast multicast single frequency network in the described basic covering domain is ad hoc wireless broadcast multicast network, or based on the broadcast group broadcast network of cell mobile communication systems;
The via node that described relaying strengthens the territory comprises isomorphism via node and isomery via node: the repeating process of isomorphism via node adopt with basic covering domain in the identical communication pattern of single frequency network, finish isomorphism covering to the wireless broadcast multicast single frequency network; The repeating process of isomery via node adopts other communication technology, finishes and the network integration of heterogeneous wireless broadcast group broadcast;
Described expansion service territory comprise with described basic covering domain in wireless broadcast multicast single frequency network isomorphism and the network of isomery, these networks are positioned at wireless broadcast multicast single frequency network coverage on the geographical position, perhaps be in outside the wireless broadcast multicast single frequency network coverage.
3, system according to claim 1 and 2, it is characterized in that: two kinds of via nodes that described relaying strengthens the territory all have the communication for coordination function, utilizing the communication for coordination technology to obtain diversity and spatial multiplexing gain that single wireless broadcast multicast network can't provide, and the coverage of extended wireless broadcast group broadcast network.
4, a kind of information transferring method of the multi-domain wireless broadcast multicast network system based on the communication for coordination technology is characterized in that this method comprises following operating procedure:
(1) initialization operation: with time division way time resource is distributed to basic covering domain, relaying enhancing territory and expansion service territory respectively earlier, wherein the granularity of division of time slot depends on actual transmission bandwidth and professional minimum transmission rate requirement;
(2) the single frequency network base station in the basic covering domain sends broadcast multicast information in the time slot under it, and via node in the territory of relaying enhancing at this moment and the terminal in the basic covering domain receive this broadcast multicast information;
(3) via node that strengthens in the territory of relaying is transmitted the broadcast multicast information that receives in the step (2) in the time slot under it, is in terminal in the relaying enhancing territory and the terminal in the expansion service territory and other equipment and receives this broadcast multicast information;
(4) broadcast multicast information in the expansion service territory terminal and miscellaneous equipment between transmit; Return the operation of execution in step (2) then.
5, method according to claim 4 is characterized in that:
The terminal that is positioned at basic covering domain inboard in the described system is nearer apart from the base station, can accurately receive the information from the base station; Be positioned at the terminal of basic covering domain in the described system near the outside, though far away apart from the base station, it is nearer apart from via node, can receive the identical broadcasts multicast business information that this sub-district and adjacent sub-district via node send, obtain diversity gain, thus correct reception sources information;
Be positioned at the terminal that relaying strengthens the territory in the described system, because of it can receive the identical broadcast multicast information that this sub-district via node and adjacent sub-district via node send, acquisition diversity gain, also correct reception sources information;
Be positioned at the terminal and the miscellaneous equipment in expansion service territory in the described system, can selective reception strengthen the information that the via node in the territory is transmitted, thereby obtain diversity gain, improve signal receiving quality from relaying.
6, method according to claim 4, it is characterized in that: the terminal meeting that is positioned at overlapping region between the territory in the described system can receive the same information that transmit in a plurality of territories because of the orthogonality that basic covering domain, relaying strengthen the data transmission procedure in territory and expansion service territory, the gain of acquisition collaboration diversity improves received signal quality greatly.
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| CN104735748B (en) * | 2009-06-29 | 2018-08-17 | 瑞典爱立信有限公司 | The node and user equipment of cellular communication system and the method executed wherein |
| BR112012002948A2 (en) * | 2009-08-11 | 2016-04-12 | Alcatel Lucent | evolved multimedia multifusion service system and method for performing statistical multiplexing of services with different identifiers of quality of service classes. |
| CN101895823B (en) * | 2010-07-21 | 2012-11-14 | 中国人民解放军理工大学 | Three-step distributed wireless cooperative multicast/broadcast method |
| US8521109B2 (en) | 2010-07-29 | 2013-08-27 | Intel Mobile Communications GmbH | Radio communication devices, information providers, methods for controlling a radio communication device and methods for controlling an information provider |
| US8712353B2 (en) | 2010-07-29 | 2014-04-29 | Intel Mobile Communications Technology GmbH | Radio communication devices, information providers, methods for controlling a radio communication device and methods for controlling an information provider |
| CN103974266B (en) * | 2013-02-04 | 2017-09-08 | 华为技术有限公司 | A kind of method of relay transmission, equipment and system |
| CN106376008A (en) * | 2016-09-06 | 2017-02-01 | 上海数果科技有限公司 | Wireless communication system and wireless communication smart terminal for radio dead zone |
| CN107734695B (en) * | 2017-10-18 | 2020-06-19 | 中国联合网络通信集团有限公司 | Uplink single-transmission method of terminal, 5G new air interface base station and LTE base station |
| CN109032095B (en) * | 2018-08-23 | 2021-02-02 | 顺德职业技术学院 | Method and system for cooperative operation under networking of multiple industrial robots |
| CN115190435B (en) * | 2022-05-27 | 2023-06-06 | 鹏城实验室 | Broadcast signal distribution method, system, medium and terminal for wide area and deep coverage |
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