CN102932747A - Networking method and system of mobile communication wireless access network based on layered architecture - Google Patents
Networking method and system of mobile communication wireless access network based on layered architecture Download PDFInfo
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- CN102932747A CN102932747A CN2012104774854A CN201210477485A CN102932747A CN 102932747 A CN102932747 A CN 102932747A CN 2012104774854 A CN2012104774854 A CN 2012104774854A CN 201210477485 A CN201210477485 A CN 201210477485A CN 102932747 A CN102932747 A CN 102932747A
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Abstract
The invention discloses a networking method and system of a mobile communication wireless access network based on a layered architecture. A broadcasting/multicasting cell layer is additionally arranged in the conventional mobile communication system to form the layered architecture of the broadcasting/multicasting cell layer and a unicasting cell layer; nodes of the broadcasting/multicasting cell layer and core network elements are in an uplink and downlink communication mode, the nodes of the broadcasting/multicasting cell layer and a mobile terminal are only in a downlink communication mode, and the nodes of the broadcasting/multicasting cell layer, the core network elements and the mobile terminal are in the uplink and downlink communication mode. The networking method has the advantages of fully reflecting the advantages of each transmission type and furthest utilizing a wireless network resource, so that not only are some problems existing at present effectively solved, but also the networking cost is greatly reduced.
Description
Technical field
The present invention relates to moving communicating field, be specifically related to a kind of mobile communication wireless Access Network network-building method and system based on layered architecture.
Background technology
Signal arrives the user in the mobile communication three kinds of transport-types: clean culture, broadcasting and multicast.Clean culture refers to the two-way point-to-point transmission at network and single terminal room, broadcasting refers to the down link point-to-multipoint transmission from network to a plurality of terminals, multicast refers to the down link point-to-multipoint from network to one group of terminal, and the descending physical link mechanism of broadcasting and multicast is identical.When we need to send identical content to multi-user, transmit normally a kind of transmission method of poor efficiency by clean culture, therefore caused waste of radio resources, particularly all the more so for the high bandwidth of multimedia application, the increase that also can bring simultaneously the core network signalling load.The point-to-multipoint transmission mode alleviates the load of Internet resources by reducing the transmission of data total amount and a large amount of signaling procedure (particularly up link).It is multimedia broadcast/group broadcast service (Multimedia Broadcast Multicast Service that the typical case of point-to-multipoint transmission mode in current mobile communication system uses, MBMS), UMTS Terrestrial radio access network network (UTRAN) and GSM EDGE wireless access networking (GERAN) have been applied to.Along with developing rapidly of mobile multi-media service, broadcasting and multicast service also will occupy sizable proportion in mobile service, and typical broadcasting and multicast content can comprise news, weather forecast or on-the-spot broadcasting mobile TV etc., and form is very extensively various.Yet, comprising in the LTE system with following foreseeable mobile communication architectural framework at present, the business of all transport-types is all transmitted by same node (or base station), that is to say that single node not only will provide unicast service, broadcasting and multicast service also will be provided, and such networking model has proposed very high Capability Requirement to node.Because the coverage of individual node depends primarily on up link, therefore, the coverage of individual node will be subject to the unbalanced restriction of uplink downlink, and this wireless coverage for the broadcasting that does not have up link and multicast service also is very disadvantageous.
Summary of the invention
The present invention is directed to above-mentioned unfavorable factor and propose a kind of mobile communication wireless Access Network network-building method and system based on layered architecture, transmission feature according to clean culture, broadcasting and multicast service, set up the wireless coverage of different levels, the advantage of each transport-type is embodied fully, utilized to greatest extent wireless network resource, not only effectively solve the problem of present existence, can also significantly reduce networking cost.
The broadcast/group broadcast node is divided into two kinds, the first is based on the node (or base station) of 3GPP standard, and this category node is deferred to the regulation that the 3GPP standard is done, but function is simply too much, the reservation function relevant with broadcasting and multicast service, thus be different from the node type of 3GPP definition.It two also can right and wrong 3GPP standard nodes, such as based on DAB(Digital Audio Broadcasting) node of standard, DVB-H (Digital Video Broadcasting-Handheld) or CMMB (China Mobile Multimedia Broadcasting) standard etc.
Be different from the broadcast/group broadcast node, for compatible 3GPP network to greatest extent, the clean culture node is based on the node of 3GPP standard, but does not keep wherein broadcasting and multicast functionality; Also can keep broadcasting and multicast functionality, use as backup or low priority, when the broadcast/group broadcast node breaks down or uses when situation can not be carried out broadcasting/packet service because resource is inadequate etc., depend on concrete system.
Mobile communication wireless Access Network network-building method based on layered architecture of the present invention, concrete scheme is as follows:
In existing mobile communication system, set up the broadcast/group broadcast cell layer, become broadcast/group broadcast cell layer and clean culture cell layer layered architecture, adopt the uplink downlink communication mode between the node of described broadcast/group broadcast cell layer and the core network element, and only have the downlink communication mode between the portable terminal, all adopt the uplink downlink communication mode between the node of described clean culture cell layer and core network element and the portable terminal.Described mobile communication wireless Access Network specific works flow process based on layered architecture is as follows:
(1) portable terminal sends business request information;
(2) business request information sent of portable terminal is received and processes by the node of this terminal place home cell, and this node is judged the type of message;
(3) if the request message that portable terminal sends belongs to broadcast/group broadcast message, the node of this portable terminal home cell will be transmitted this message to core network element; If the request message that portable terminal sends does not belong to broadcast/group broadcast message, then enter other Message Processing flow process;
(4) if the request message that portable terminal sends belongs to broadcast/group broadcast message, the node of this portable terminal home cell will be transmitted this message to core network element, core network element and broadcast/group broadcast node are held consultation, and judge whether to possess the ability of carrying out the broadcast/group broadcast task according to strategy;
(5) if the broadcast/group broadcast node possesses the ability of carrying out the broadcast/group broadcast task, then this node carries out the broadcasting/packet service transmission to portable terminal;
(6) if the broadcast/group broadcast node does not possess the ability of carrying out the broadcast/group broadcast task, then the node of core network element and portable terminal home cell is held consultation, and judges whether to possess the ability of broadcast/group broadcast task according to strategy;
(7) if the node of portable terminal home cell possesses the ability of broadcast/group broadcast task, then this node carries out the broadcasting/packet service transmission to portable terminal;
(8) if the node of portable terminal home cell does not possess the ability of broadcast/group broadcast task, then reply the broadcasting/packet service request failure message to portable terminal.
Set up the mobile communication wireless access net system based on layered architecture of the present invention according to above-mentioned network-building method, its concrete scheme is: set up broadcast/group broadcast cell layer node in existing mobile communication system, form the access net system with broadcast/group broadcast cell layer node and clean culture cell layer node, has the uplink and downlink communication link between described broadcast/group broadcast cell layer node and the core network element, and only have the downlink communication link between the portable terminal, all have the uplink and downlink communication link between described clean culture cell layer node and core network element and the portable terminal.
The networking model of layering will between broadcast/group broadcast cell layer node and the core network element, between broadcast/group broadcast cell layer node and the clean culture cell layer node and broadcast/group broadcast cell layer node introduce each other new interface.According to networking model, if newly-increased broadcast/group broadcast cell layer node is based on the 3GPP standard, need so to introduce the interface that the interface between the broadcast/group broadcast cell layer node is called between BM-BM interface, broadcast/group broadcast cell layer node and the clean culture cell layer node and be called the BM-S interface, and the interface between broadcast/group broadcast cell layer node and the core network element is called the BM-CN interface.Wherein the major function of BM-BM interface and BM-S interface is to support mobility, load and interference management etc., and the BM-CN interface is mainly supported context management, bearer management, mobility, paging and load management etc.In concrete networking, BM-S interface and BM-BM interface can not be mandatory requirements, and still from the demand of LTE, these two interfaces are necessary.When the node of broadcast/group broadcast node right and wrong 3GPP standard, except increasing above three interfaces, also need to introduce gateway BM-GW in broadcast/group broadcast cell layer node side, mainly bear the conversion that realizes between the different system agreement.
The node of the broadcast/group broadcast cell layer of access net system of the present invention and the node of clean culture cell layer can be operated in different frequency range, also can be operated in similar frequency bands.When being operated in different frequency range, will can not form each other interference, simplified network design and maintenance work.When being operated in similar frequency bands, a side will form interference to the opposing party, and need to take technological means such as time-division slot transmission etc. that interference is suppressed and eliminate this moment.In access net system described in the invention, should increase as much as possible the coverage of broadcasting/packet service, the layout height of broadcast/group broadcast node antenna should be much higher than the layout height of clean culture cell layer node antenna, clean culture cell layer node will can not consist of severe jamming to broadcast/group broadcast cell layer node, can take the routine techniques means to be solved.Broadcast/group broadcast cell layer node then can not be ignored the interference of clean culture cell layer node, especially in the nearer scope of distance broadcast/group broadcast node.The present invention also proposes a kind of employing power splitter control broadcast/group broadcast cell layer node transmitting power, and antenna height, inclination angle rationally are set to reduce the method for disturbing, namely according to the distance of broadcast/group broadcast cell layer node and clean culture cell layer node, the transmitting power of making rational planning for will be disturbed control within the specific limits.In the nearer scope of distance broadcast/group broadcast node, can take to reduce antenna height such as clean culture cell layer node, increase Downtilt, reduce the method for transmitting power, and in distant position, can take to increase antenna height, reduce angle of declination, improve the method for transmitting power.
Switch access net system support terminal of the present invention residential quarter in layer and switch the interlayer residential quarter, and the interior minizone of layer switches in has done at length standard among relevant criterion such as the 3GPP, and interlayer residential quarter handoff algorithms can specific design, and the present invention does not do regulation.
Description of drawings
Fig. 1 is the mobile communication wireless Access Network workflow diagram based on layered architecture.
Embodiment
Below in conjunction with drawings and Examples content of the present invention is further described.
Mobile communication wireless Access Network network-building method based on layered architecture of the present invention, concrete scheme is as follows:
In existing mobile communication system, set up the broadcast/group broadcast cell layer, become broadcast/group broadcast cell layer and clean culture cell layer layered architecture, adopt the uplink downlink communication mode between the node of described broadcast/group broadcast cell layer and the core network element, and only have the downlink communication mode between the portable terminal, all adopt the uplink downlink communication mode between the node of described clean culture cell layer and core network element and the portable terminal.Described mobile communication wireless Access Network specific works flow process based on layered architecture is as follows:
(1) portable terminal sends business request information;
(2) business request information sent of portable terminal is received and processes by the node of this terminal place home cell, and this node is judged the type of message;
(3) if the request message that portable terminal sends belongs to broadcast/group broadcast message, the node of this portable terminal home cell will be transmitted this message to core network element; If the request message that portable terminal sends does not belong to broadcast/group broadcast message, then enter other Message Processing flow process;
(4) if the request message that portable terminal sends belongs to broadcast/group broadcast message, the node of this portable terminal home cell will be transmitted this message to core network element, core network element and broadcast/group broadcast node are held consultation, and judge whether to possess the ability of carrying out the broadcast/group broadcast task according to strategy;
(5) if the broadcast/group broadcast node possesses the ability of carrying out the broadcast/group broadcast task, then this node carries out the broadcasting/packet service transmission to portable terminal;
(6) if the broadcast/group broadcast node does not possess the ability of carrying out the broadcast/group broadcast task, then the node of core network element and portable terminal home cell is held consultation, and judges whether to possess the ability of broadcast/group broadcast task according to strategy;
(7) if the node of portable terminal home cell possesses the ability of broadcast/group broadcast task, then this node carries out the broadcasting/packet service transmission to portable terminal;
(8) if the node of portable terminal home cell does not possess the ability of broadcast/group broadcast task, then reply the broadcasting/packet service request failure message to portable terminal.
Set up the mobile communication wireless access net system based on layered architecture of the present invention according to above-mentioned network-building method, its concrete scheme is: set up broadcast/group broadcast cell layer node in existing mobile communication system, form the access net system with broadcast/group broadcast cell layer node and clean culture cell layer node, has the uplink and downlink communication link between described broadcast/group broadcast cell layer node and the core network element, and only have the downlink communication link between the portable terminal, all have the uplink and downlink communication link between described clean culture cell layer node and core network element and the portable terminal.
Claims (3)
1. mobile communication wireless Access Network network-building method based on layered architecture, it is characterized in that: in existing mobile communication system, set up the broadcast/group broadcast cell layer, become broadcast/group broadcast cell layer and clean culture cell layer layered architecture, adopt the uplink downlink communication mode between the node of described broadcast/group broadcast cell layer and the core network element, and only has the downlink communication mode between the portable terminal, all adopt the uplink downlink communication mode between the node of described clean culture cell layer and core network element and the portable terminal, described mobile communication wireless Access Network specific works flow process based on layered architecture is as follows:
(1) portable terminal sends business request information;
(2) business request information sent of portable terminal is received and processes by the node of this terminal place home cell, and this node is judged the type of message;
(3) if the request message that portable terminal sends belongs to broadcast/group broadcast message, the node of this portable terminal home cell will be transmitted this message to core network element; If the request message that portable terminal sends does not belong to broadcast/group broadcast message, then enter other Message Processing flow process;
(4) if the request message that portable terminal sends belongs to broadcast/group broadcast message, the node of this portable terminal home cell will be transmitted this message to core network element, core network element and broadcast/group broadcast node are held consultation, and judge whether to possess the ability of carrying out the broadcast/group broadcast task according to strategy;
(5) if the broadcast/group broadcast node possesses the ability of carrying out the broadcast/group broadcast task, then this node carries out the broadcasting/packet service transmission to portable terminal;
(6) if the broadcast/group broadcast node does not possess the ability of carrying out the broadcast/group broadcast task, then the node of core network element and portable terminal home cell is held consultation, and judges whether to possess the ability of broadcast/group broadcast task according to strategy;
(7) if the node of portable terminal home cell possesses the ability of broadcast/group broadcast task, then this node carries out the broadcasting/packet service transmission to portable terminal;
(8) if the node of portable terminal home cell does not possess the ability of broadcast/group broadcast task, then reply the broadcasting/packet service request failure message to portable terminal.
2. realize a kind of mobile communication wireless access net system based on layered architecture of the described network-building method of claim 1, it is characterized in that: this system comprises broadcast/group broadcast cell layer node and clean culture cell layer node, has the uplink and downlink communication link between described broadcast/group broadcast cell layer node and the core network element, and only have the downlink communication link between the portable terminal, all have the uplink and downlink communication link between described clean culture cell layer node and core network element and the portable terminal.
3. a kind of mobile communication wireless access net system based on layered architecture according to claim 2, it is characterized in that: described broadcast/group broadcast cell layer node and clean culture cell layer node can be operated in different frequency range, also can be operated in similar frequency bands.
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Citations (4)
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|---|---|---|---|---|
| CN101335990A (en) * | 2007-06-27 | 2008-12-31 | 中兴通讯股份有限公司 | Method for mobile terminal to invoke service |
| CN101388686A (en) * | 2007-09-14 | 2009-03-18 | 中兴通讯股份有限公司 | Method and device implementing downlink pilot under coexistence of uni-cast and broadcast multicast service |
| CN101425915A (en) * | 2007-10-30 | 2009-05-06 | 大唐移动通信设备有限公司 | Transmission method, system and device for hierarchy transmission data |
| WO2012139639A2 (en) * | 2011-04-13 | 2012-10-18 | Nokia Siemens Networks Oy | Mobility management |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335990A (en) * | 2007-06-27 | 2008-12-31 | 中兴通讯股份有限公司 | Method for mobile terminal to invoke service |
| CN101388686A (en) * | 2007-09-14 | 2009-03-18 | 中兴通讯股份有限公司 | Method and device implementing downlink pilot under coexistence of uni-cast and broadcast multicast service |
| CN101425915A (en) * | 2007-10-30 | 2009-05-06 | 大唐移动通信设备有限公司 | Transmission method, system and device for hierarchy transmission data |
| WO2012139639A2 (en) * | 2011-04-13 | 2012-10-18 | Nokia Siemens Networks Oy | Mobility management |
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