CN102932747B - Based on mobile communication wireless Access Network network-building method and the system of layered architecture - Google Patents
Based on mobile communication wireless Access Network network-building method and the system of layered architecture Download PDFInfo
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- CN102932747B CN102932747B CN201210477485.4A CN201210477485A CN102932747B CN 102932747 B CN102932747 B CN 102932747B CN 201210477485 A CN201210477485 A CN 201210477485A CN 102932747 B CN102932747 B CN 102932747B
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Abstract
The invention discloses a kind of mobile communication wireless Access Network network-building method based on layered architecture and system: in existing mobile communication system, set up broadcast/group broadcast cell layer, become broadcast/group broadcast cell layer and unicast cells layer layered architecture.Adopt uplink downlink communication mode between the node of broadcast/group broadcast cell layer and core network element, and between mobile terminal, only have downlink communication mode, between the node of unicast cells layer and core network element and mobile terminal, all adopt uplink downlink communication mode.The advantage of each transport-type embodies by this network-building method fully, make use of wireless network resource to greatest extent, not only effectively solves some problems existed at present, significantly can also reduce networking cost.
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 based on layered architecture and system.
Background technology
In mobile communication, signal arrives user three kinds of transport-types: clean culture, broadcast and multicast.Clean culture refers to the two-way point-to-point transmission at network and single terminal room, broadcast refers to that the down link point-to-multipoint from network to multiple terminal is transmitted, multicast refers to the down link point-to-multipoint from network to one group of terminal, and the descending physical link mechanism of broadcast and multicast is identical.When we need to send identical content to multi-user, normally a kind of transmission method of poor efficiency is transmitted by clean culture, therefore cause waste of radio resources, the high bandwidth particularly for multimedia application is all the more so, also can bring the increase of core network signalling load simultaneously.Point-to-multipoint transmission mode alleviates the load of Internet resources by minimizing transmission data total amount and a large amount of signaling procedure (particularly up link).Point-to-multipoint transmission mode typical apply is in the current mobile communication systems multimedia broadcast/group broadcast service (MultimediaBroadcastMulticastService, MBMS), UMTS Terrestrial radio access network network (UTRAN) and GSMEDGE wireless access networking (GERAN) has been applied to.Along with developing rapidly of mobile multi-media service, broadcast and multicast service also will occupy sizable proportion in mobile service, and typical broadcast and multicast content can comprise news, weather forecast or on-the-spot broadcasting mobile TV etc., and form is widely various.But, at present and future foreseeable mobile communication architectural framework comprise in LTE system, the business of all transport-types is all transmitted by same node (or base station), that is single node not only will provide unicast service, also will provide broadcast and multicast service, such networking model proposes 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 broadcast and multicast service that do not have up link is also 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 based on layered architecture and system, according to the transmission feature of clean culture, broadcast and multicast service, set up the wireless coverage of different levels, the advantage of each transport-type is embodied fully, make use of wireless network resource to greatest extent, not only efficiently solve current Problems existing, significantly can also reduce networking cost.
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 defers to the regulation that 3GPP standard is done, but function is simply too much, only retain the function relevant with multicast service with broadcast, thus be different from the node type of 3GPP definition.It two can be also non-3 gpp standard nodes, such as based on DAB(DigitalAudioBroadcasting) node of standard, DVB-H (DigitalVideoBroadcasting-Handheld) or CMMB (ChinaMobileMultimediaBroadcasting) standard etc.
Be different from broadcast/group broadcast node, in order to compatible 3GPP network to greatest extent, clean culture node is the node based on 3GPP standard, but the broadcast do not retained wherein and multicast functionality; Also can retain broadcast and multicast functionality, use as backup or low priority, use when broadcast/group broadcast one malfunctions or when can not perform broadcasting/packet service because of situations such as resource are inadequate, depend on concrete system.
Mobile communication wireless Access Network network-building method based on layered architecture of the present invention, concrete scheme
As follows:
Broadcast/group broadcast cell layer is set up in existing mobile communication system, become broadcast/group broadcast cell layer and unicast cells layer layered architecture, uplink downlink communication mode is adopted between the node of described broadcast/group broadcast cell layer and core network element, and only have downlink communication mode between mobile terminal, between the node of described unicast cells layer and core network element and mobile terminal, all adopt uplink downlink communication mode.The described mobile communication wireless Access Network specific works flow process based on layered architecture is as follows:
(1) mobile terminal sends business request information;
(2) business request information that mobile terminal sends is received by the node of this home cell, terminal place row relax of going forward side by side, and this node judges the type of message;
(3) if the request message that mobile terminal sends belongs to broadcast/group broadcast message, the node of this mobile terminal home cell by this message of forwarding to core network element; If the request message that mobile terminal sends does not belong to broadcast/group broadcast message, then enter other Message Processing flow process;
(4) if the request message that mobile terminal sends belongs to broadcast/group broadcast message, the node of this mobile terminal home cell by this message of forwarding to core network element, core network element and broadcast/group broadcast node are held consultation, and whether possess the ability performing broadcast/group broadcast task according to tactful decision node;
(5) if broadcast/group broadcast node possesses the ability performing broadcast/group broadcast task, then this node carries out broadcasting/packet service transmission to mobile terminal;
(6) if broadcast/group broadcast node does not possess the ability performing broadcast/group broadcast task, then the node of core network element and mobile terminal home cell is held consultation, and whether possesses the ability of broadcast/group broadcast task according to tactful decision node;
(7) if the node of mobile terminal home cell possesses the ability performing broadcast/group broadcast task, then this node carries out broadcasting/packet service transmission to mobile terminal;
(8) if the node of mobile terminal home cell does not possess the ability of broadcast/group broadcast task, then broadcasting/packet service request failure message is replied to mobile terminal.
The mobile communication wireless access net system based on layered architecture of the present invention is set up according to above-mentioned network-building method, its concrete scheme is: in existing mobile communication system, set up broadcast/group broadcast cell layer node, composition has the access net system of broadcast/group broadcast cell layer node and unicast cells node layer, between described broadcast/group broadcast cell layer node and core network element, there is uplink and downlink communication link, and only have downstream communications link between mobile terminal, between described unicast cells node layer and core network element and mobile terminal, all there is uplink and downlink communication link.
The networking model of layering by between broadcast/group broadcast cell layer node and core network element, between broadcast/group broadcast cell layer node and unicast cells node layer and broadcast/group broadcast cell layer node introduce new interface each other.According to networking model, if newly-increased broadcast/group broadcast cell layer node is based on 3GPP standard, so need that the interface introduced between broadcast/group broadcast cell layer node is called BM-BM interface, interface between broadcast/group broadcast cell layer node and unicast cells node layer is called BM-S interface, and the interface between broadcast/group broadcast cell layer node and core network element is called BM-CN interface.Wherein the major function of BM-BM interface and BM-S interface supports mobility, load and interference management etc., and BM-CN interface mainly supports 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, but from the demand of LTE, these two interfaces are necessary.When broadcast/group broadcast node is the node of non-3 gpp 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 realized between different system agreement.
The node of the broadcast/group broadcast cell layer of access net system of the present invention and the node of unicast cells layer can be operated in different frequency range, also can be operated in similar frequency bands.When being operated in different frequency range, interference can not be formed each other, simplifying network design and maintenance work.When being operated in similar frequency bands, a side will form interference to the opposing party, now need to take technological means such as time-division slot transmission etc. suppress interference and eliminate.In access net system described in the invention, the coverage of broadcasting/packet service should be increased as much as possible, the layout height of broadcast/group broadcast node antennas should be much higher than the layout height of unicast cells node layer antenna, unicast cells node layer can not form severe jamming to broadcast/group broadcast cell layer node, and routine techniques means can be taked to be solved.Broadcast/group broadcast cell layer node then can not be ignored the interference of unicast cells node layer, especially in the scope nearer apart from broadcast/group broadcast node.The present invention also proposes a kind of power splitter that adopts and controls broadcast/group broadcast cell layer node transmitting power, and antenna height, inclination angle are rationally set to reduce the method for interference, namely according to the distance of broadcast/group broadcast cell layer node and unicast cells node layer, to make rational planning for transmitting power, interference is controlled within the specific limits.Such as unicast cells node layer, in the scope nearer apart from broadcast/group broadcast node, can be taked to reduce antenna height, 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.
Access net system support terminal of the present invention is cell merge and interlayer cell merge in layer, and in layer, handover between cells has done specification in detail in relevant criterion is as 3GPP, and interlayer cell merge algorithm can specific design, and the present invention does not specify.
Accompanying drawing explanation
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:
Broadcast/group broadcast cell layer is set up in existing mobile communication system, become broadcast/group broadcast cell layer and unicast cells layer layered architecture, uplink downlink communication mode is adopted between the node of described broadcast/group broadcast cell layer and core network element, and only have downlink communication mode between mobile terminal, between the node of described unicast cells layer and core network element and mobile terminal, all adopt uplink downlink communication mode.The described mobile communication wireless Access Network specific works flow process based on layered architecture is as follows:
(1) mobile terminal sends business request information;
(2) business request information that mobile terminal sends is received by the node of this home cell, terminal place row relax of going forward side by side, and this node judges the type of message;
(3) if the request message that mobile terminal sends belongs to broadcast/group broadcast message, the node of this mobile terminal home cell by this message of forwarding to core network element; If the request message that mobile terminal sends does not belong to broadcast/group broadcast message, then enter other Message Processing flow process;
(4) if the request message that mobile terminal sends belongs to broadcast/group broadcast message, the node of this mobile terminal home cell by this message of forwarding to core network element, core network element and broadcast/group broadcast node are held consultation, and whether possess the ability performing broadcast/group broadcast task according to tactful decision node;
(5) if broadcast/group broadcast node possesses the ability performing broadcast/group broadcast task, then this node carries out broadcasting/packet service transmission to mobile terminal;
(6) if broadcast/group broadcast node does not possess the ability performing broadcast/group broadcast task, then the node of core network element and mobile terminal home cell is held consultation, and whether possesses the ability of broadcast/group broadcast task according to tactful decision node;
(7) if the node of mobile terminal home cell possesses the ability performing broadcast/group broadcast task, then this node carries out broadcasting/packet service transmission to mobile terminal;
(8) if the node of mobile terminal home cell does not possess the ability of broadcast/group broadcast task, then broadcasting/packet service request failure message is replied to mobile terminal.
The mobile communication wireless access net system based on layered architecture of the present invention is set up according to above-mentioned network-building method, its concrete scheme is: in existing mobile communication system, set up broadcast/group broadcast cell layer node, composition has the access net system of broadcast/group broadcast cell layer node and unicast cells node layer, between described broadcast/group broadcast cell layer node and core network element, there is uplink and downlink communication link, and only have downstream communications link between mobile terminal, between described unicast cells node layer and core network element and mobile terminal, all there is uplink and downlink communication link.
Claims (3)
1. the mobile communication wireless Access Network network-building method based on layered architecture, it is characterized in that: in existing mobile communication system, set up broadcast/group broadcast cell layer, become broadcast/group broadcast cell layer and unicast cells layer layered architecture, uplink downlink communication mode is adopted between the node of described broadcast/group broadcast cell layer and core network element, and only have downlink communication mode between mobile terminal, uplink downlink communication mode is all adopted between the node of described unicast cells layer and core network element and mobile terminal, the described mobile communication wireless Access Network specific works flow process based on layered architecture is as follows:
(1) mobile terminal sends business request information;
(2) business request information that mobile terminal sends is received by the node of this home cell, terminal place row relax of going forward side by side, and this node judges the type of message;
(3) if the request message that mobile terminal sends belongs to broadcast/group broadcast message, the node of this mobile terminal home cell by this message of forwarding to core network element; If the request message that mobile terminal sends does not belong to broadcast/group broadcast message, then enter other Message Processing flow process;
(4) if the request message that mobile terminal sends belongs to broadcast/group broadcast message, the node of this mobile terminal home cell by this message of forwarding to core network element, core network element and broadcast/group broadcast node are held consultation, and whether possess the ability performing broadcast/group broadcast task according to tactful decision node;
(5) if broadcast/group broadcast node possesses the ability performing broadcast/group broadcast task, then this node carries out broadcasting/packet service transmission to mobile terminal;
(6) if broadcast/group broadcast node does not possess the ability performing broadcast/group broadcast task, then the node of core network element and mobile terminal home cell is held consultation, and whether possesses the ability of broadcast/group broadcast task according to tactful decision node;
(7) if the node of mobile terminal home cell possesses the ability performing broadcast/group broadcast task, then this node carries out broadcasting/packet service transmission to mobile terminal;
(8) if the node of mobile terminal home cell does not possess the ability of broadcast/group broadcast task, then broadcasting/packet service request failure message is replied to mobile terminal.
2. realize a kind of mobile communication wireless access net system based on layered architecture of network-building method described in claim 1, it is characterized in that: this system comprises broadcast/group broadcast cell layer node and unicast cells node layer, between described broadcast/group broadcast cell layer node and core network element, there is uplink and downlink communication link, and only have downstream communications link between mobile terminal, between described unicast cells node layer and core network element and mobile terminal, all there is uplink and downlink communication link.
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 unicast cells node layer can be operated in different frequency range, also can be operated in similar frequency bands.
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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