CN102595651A - Honeycomb wireless network capable of operating in spectrum above 5 GHz - Google Patents
Honeycomb wireless network capable of operating in spectrum above 5 GHz Download PDFInfo
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- CN102595651A CN102595651A CN2011100205722A CN201110020572A CN102595651A CN 102595651 A CN102595651 A CN 102595651A CN 2011100205722 A CN2011100205722 A CN 2011100205722A CN 201110020572 A CN201110020572 A CN 201110020572A CN 102595651 A CN102595651 A CN 102595651A
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Abstract
The invention discloses a honeycomb wireless network capable of operating in a spectrum above 5 GHz, and provides wireless wideband access for fixed users and mobile users. The honeycomb wireless network comprises a gateway, radio nodes, a mobile access module and a server, wherein the radio nodes comprise user nodes and relay nodes; and the server comprises a service server and a network management server. The honeycomb wireless network divides a service area into a plurality of cells according to a traditional honeycomb wireless communication system; in addition, the honeycomb wireless network is different from the traditional honeycomb wireless communication system, elevates the gateway and the radio nodes over street lamps and other buildings to form an overhead communication platform, and leads the adjacent wireless nodes to be visible, so that wireless communication can be achieved through a short-distance linear path by utilizing the high spectrum above 5 GHz. User data is connected with the gateway on the overhead communication platform through one-hop or multi-hop (refers to a plurality of wireless links that are connected end to end).
Description
Technical field
The invention belongs to the interleaving techniques field of radio computer network and telecommunications, relate to a kind of novel cellular radio structure, especially can utilize the above abundant radio spectrum resources of 5GHz to increase substantially the user bandwidth of city wireless access.
Background technology
Along with the continuous growth of wireless application to bandwidth demand, legacy cellular wireless telecommunication system (2G/3G/4G) possibly meet with the frequency spectrum bottleneck because not utilizing the above high spectrum of 5GHz (annotating 1) in the future.Annotate 1: this be because, when wireless frequency spectrum is so high, even if leaf all with the absorption signal energy, wireless transmission will rely on the straightline propagation path more; This means that (especially in the city) terrestrial wireless transmission range will shorten usually; Therefore, the data sent of subscriber equipment generally need be passed through multi-hop (referring to many end to end Radio Links) transmission and could be arrived the base station.
Insert though the wireless lan (wlan) technology can be applied to the city WiMAX with high spectrum, the method cost too high (annotating 2) is difficult to carry out at present.This is because as previously mentioned, along with increasing of frequency, the distance of terrestrial wireless transmission will shorten usually, need be the WAP (AP) that square level increases so cover a city; And AP need connect cable broadband usually, and this just means that the method need be with cable broadband shop all over each corner, city, and this is quite expensive beyond doubt at present.Annotate 2: current I EEE 802.11b is because of using lower wireless frequency spectrum (2.4GHz), and the coverage of single WAP is bigger, so still can accept with the network cost in this technology covering city.But less because of its used low frequency spectrum total amount, and coverage means that greatly the user is more, so be difficult to for all users broadband connection is provided simultaneously.
Wireless mesh (wireless mesh) network technology has begun to be applied to the city wireless access.Yet existing wireless mesh network is difficult to guarantee each user's access bandwidth.This be because; The network configuration of existing wireless mesh network loose (arbitrariness of topology has considerable influence to network capacity); Theoretical not enough (capacity problem of multi-hop wireless network is a difficult problem always) of network capacity, and have various complicacies inside and outside the network and the air interference that is difficult to predict.
Summary of the invention
In order to overcome above three kinds of wireless networks deficiency separately, the present invention proposes a kind of novel cellular radio.Present networks increases substantially network capacity with (such as 5-50GHz) frequency spectrum resource more than using 5GHz; Cover a city (also can be applicable to rural area and interior of building) with less gateway (corresponding to the base station of commmunication company and the access point of WLAN), and for fixing and mobile subscriber broadband access anywhere or anytime is provided with guaranteed bandwidth.
The technical scheme that the present invention adopted can be referred to as " prospect of a city in the evening " formula wireless access technology visually.If you overlook a modern city from the hilltop or on the aircraft at night, you it will be appreciated that like bright city lights as the groups of stars; If you further are imagined as the light that interweaves the transmission of information; You can " see " a following cordless communication network: this net will be positioned at street lamp and organize with honeycomb with the numerous radio nodes on other building; Fuse with Radio Link, thereby the city WiMAX of realizing all standing formula inserts.
Specifically; The method that present networks is taked the deficiency of aforementioned three networks is respectively: 1) can not utilize the above high spectrum of 5GHz to the legacy cellular wireless communication system: present networks is overhead in overhead 5-50 rice of street lamp and other building with radio node; Constitute overhead communications platform; And make adjacent radio node sight line visible (referring to exist low coverage straightline propagation path), thereby be able to use high spectrum to carry out wireless transmission.Using such method; Present networks is jumped (direct communication of mobile subscriber equipment and base station) with the legacy cellular wireless communication system from one and expanded to multi-hop: the radio node on the mobile subscriber equipment elder generation and the crown (is said exactly; Be the mobile AM access module that the back literary composition is mentioned) communication, be connected to gateway through above-mentioned overhead communications platform through a jumping or multi-hop by radio node again.2) cover to WLAN that the required cable broadband quantity in city is big, expense is high: in view of power line has widely and covers in the city in modern times; Present networks adopts the strategy of " radio node follows power line to walk "; Miniature (literary composition of seeing after) radio node extensively is installed in the place that there are electric power (or other energy) in street lamp, family, unit etc.; And make tens, thereby greatly reduce the total cost that covers a required cable broadband in city to the shared cable broadband (gateway) of a hundreds of radio node.3) be difficult to guarantee user bandwidth to wireless mesh network because of air interference complicated inside and outside loosely organized and the network: first; On aforementioned overhead communications platform, carry out the low coverage line communication, thereby avoid the influence of the outer interference source of various nets (such as people and the vehicle in moving) radio link quality in the overhead communications platform with high spectrum.The second, according to the legacy cellular wireless communication system coverage is divided into a plurality of sub-districts, strategically arrange the sub-district to use one group of identical or different channel, thereby avoid cell capacity to receive influence from the air interference of other sub-district.The 3rd, lay the network skeleton of via node, and make user node participate in message relay, thereby guarantee the basic network capacity of sub-district as the sub-district.The 4th, gateway leader radio node is cooperated with each other, and is responsible for the unified allocation of resources local resource and guarantees each user's bandwidth.
The invention has the beneficial effects as follows; Compare with the legacy cellular wireless communication system; Present networks bandwidth wideer (frequency spectrum resource is abundant), topology be stable (route redundancy), cost lower (equipment is cheap, and user node is participated in message relay), more environmental protection (emitted energy is low) more.
Below in conjunction with accompanying drawing present networks is specified.
Fig. 1 is the system assumption diagram of present networks.
Fig. 2 is the structural representation of (honeycomb) sub-district.
Fig. 3 is the structural representation of radio node.
In an embodiment shown in Figure 1, present networks is made up of the sub-district that is connecting the Internet, service server and NM server.The coverage is divided into a plurality of sub-districts, and gateway that is connecting internet broadband of each cell setting is used for to tens providing WiMAX to insert simultaneously to a hundreds of radio node in the sub-district.
Earlier that all are the available wireless frequency spectrum of present networks is divided into some channels, according to the size of sub-district, gives the sub-district with one group of identical or different channel allocation again, is not influenced by the air interference from other sub-district with the network capacity that guarantees each sub-district.The channel allocation example that can satisfy this requirement is following.Distribute all channels successively; The current channel of each distribution is given a sub-district of satisfying following condition: this sub-district is not assigned with this channel as yet; If this sub-district has been assigned with this channel, its result can not cause the sub-district that has been assigned with this channel to take place with disturbing frequently.
Radio node (or only its antenna) is placed in overhead 5-50 rice (notes 3) of street lamp and other building, with away from various ground interference source.Adjacent radio node is placed in the visible place of sight line (annotating 4) each other, so that utilize high spectrum to carry out radio communication with the low coverage straight line path.Annotate 3: when present networks was applied to interior of building, radio node is installed in the wall top of each floor, and was such as ceiling light.Annotate 4: when present networks was applied to interior of building, if the radio node on the wall top is sealed in certain room, then it needed to be used with a back-to-back representation node that is connected.For example connect up, representation node is mounted to the place that this room external enwergy is seen other radio node or representation node through wall top or Durchgangshohle.Though this method needs by wire communication, can greatly reduce the laying distance and laying difficulty of wire communication cable.
NM server is responsible for monitoring all-network equipment (gateway, radio node and mobile AM access module) and other Internet resources (distribution of wireless channel and coverage).
Service server is responsible for the diverse network business, such as authentication, roaming and call charge service.Its authentication business carries out authentication to the linchpin radio node, the IP address of management radio node, and generate radio node the communicate by letter close spoon shared with gateway.
An example of cell initial process is following: 1) gateway (being designated as G) starts the back at link layer periodic broadcasting network title, cell name, current time and other cell information.2) radio node (being designated as A) is heard this broadcasting, sends authentication request packet to G, comprising the service server title, and with the technological data of carrying out authentication of asymmetric close spoon.Like A not in the white list (authentication node tabulation) of G, G only with safe speed (such as half a minute once, to avoid bandwidth abuse) transmit authentication request packet to service server.Be intermediary like this with G, A and service server are means with asymmetric close spoon technology, confirm the legitimacy of the other side's identity each other.As through authentication, service server will be to the IP address information of symmetrical close spoon of sending that their share of A and G, A.3) radio node A becomes the legal node of sub-district, the initial route to gateway G has been arranged, and G begins to serve for it.After this A begins the periodic broadcasting cell information, so that the neighbours of A can add the sub-district through A.4) if radio node A receives the broadcast message of a plurality of sub-districts, then the A request adds all sub-districts, but A only broadcasts the information of that sub-district (referring to the optimum subdistrict that A selects) of the actual adding of A.
In Fig. 2, gateway is made up of PC and some exterior antennas.Radio node comprises user node and via node.User computer in the dwelling house (family or office) is connected on the user node through wire link (Ethernet).
The mobile device (such as palmtop PC or notebook computer) that mobile AM access module (being attached on some via nodes of choosing) is responsible for the user provides broadband access.Mobile device only need be installed necessary software, can need not user intervention, sets up Radio Link with mobile AM access module voluntarily, inserts present networks with this, and realizes roaming with the mobile IP technology of standard.
The radio node that the user inserted carries out pellucidly (referring to user and the Internet all invisible) encryption and decryption with the close spoon of communicating by letter that the gateway of affiliated subdistrict utilizes the two to share, to guarantee the fail safe in user data wireless transmission stage in the sub-district.
In an embodiment shown in Figure 3, radio node is by being 3 wireless transceivers, and a single-chip microcomputer, band power supply (PoE:Power over Ethernet) Ethernet interface and a protecting sheathing constitute.Radio node has following characteristics: 1) volume is miniature, is beneficial to power saving and installation.This mainly is to make very little (such as less than 1 centimetre) that antenna can be done because radio node works in high-frequency (wavelength short), so corresponding also can do very little of radio node.Next is because of radio node function simple (sophisticated functions of subzone network is transferred to gateway processes), such as the channel switching command of carrying out gateway.2) wireless transceiver possesses omni-directional.Omni-directional is meant that wireless transceiver can be in coverage, with on the aforementioned overhead communications platform at any angle other wireless transceiver communicate by letter.The purpose of design is in order to guarantee that in the urban environment of transition radio node need not on-the-spot manual work adjustment after installation, still can keep good connectedness like this.
Claims (9)
1. cellular radio; Constitute by sub-district (comprising gateway, user node, via node and mobile AM access module) and server (comprising service server and NM server); It is characterized in that; Radio node (comprising user node and via node) is overhead architectural at street lamp and other, carries out radio communication with above high spectrum of 5GHz and low coverage straight line path; The coverage is divided into a plurality of sub-districts, lays via node in the sub-district as network skeleton, and user node is participated in message relay, and gateway is responsible for allocating local resource and is guaranteed each user's bandwidth.
2. cellular radio according to claim 1; It is characterized in that: gateway of each cell setting; Gateway is made up of the low price equipment (such as PC) that is connecting internet broadband and a plurality of exterior antenna, and exterior antenna is overhead respectively around building.
3. cellular radio according to claim 1; It is characterized in that: radio node has a plurality of omnidirectionals wireless transceiver; Radio node is connected to the gateway that it belongs to the sub-district with the interconnected formation network of Radio Link through a jumping or multi-hop (referring to end to end multi wireless links).
4. cellular radio according to claim 1 is characterized in that: user's permanent plant (such as desktop computer) can be connected to user node and obtain the IP address automatically after necessary software is installed through Ethernet.
5. cellular radio according to claim 1; It is characterized in that: mobile AM access module is attached on the via node; User's mobile device (such as notebook computer) need not user intervention and can insert present networks and roaming through moving AM access module after necessary software is installed.
6. cellular radio according to claim 1, it is characterized in that: network is distributed to the sub-district with available channel, and the sub-district uses one group of identical or different channel to receive the influence of the air interference of other sub-district with the network capacity of avoiding the sub-district.
7. cellular radio according to claim 1; It is characterized in that: the radio node that the user inserted carries out pellucidly (referring to user and the Internet all invisible) encryption and decryption with the close spoon of communicating by letter that its affiliated sub-district gateway utilizes the two to share, to guarantee the fail safe in user data wireless transmission stage in the sub-district.
8. cellular radio according to claim 1 is characterized in that: the authentication business of service server is responsible for the linchpin radio node is carried out authentication, the IP address of management radio node, and generate radio node the communicate by letter close spoon shared with gateway.
9. cellular radio according to claim 1 is characterized in that: NM server is responsible for monitoring all-network equipment (gateway, radio node and mobile AM access module) and other Internet resources (distribution of wireless channel and coverage).
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| CN2011100205722A CN102595651A (en) | 2011-01-18 | 2011-01-18 | Honeycomb wireless network capable of operating in spectrum above 5 GHz |
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| CN2011100205722A CN102595651A (en) | 2011-01-18 | 2011-01-18 | Honeycomb wireless network capable of operating in spectrum above 5 GHz |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110050476A (en) * | 2016-12-09 | 2019-07-23 | 赤多尼公司 | Network infrastructure and switching by street lamp |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1672446A (en) * | 2002-06-24 | 2005-09-21 | 诺基亚公司 | Mobile mesh AD-HOC networking |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1672446A (en) * | 2002-06-24 | 2005-09-21 | 诺基亚公司 | Mobile mesh AD-HOC networking |
Non-Patent Citations (1)
| Title |
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| 沈嘉: "移动通信网络和传感器网络的融合", 《现代电信科技》, no. 11, 15 November 2008 (2008-11-15) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110050476A (en) * | 2016-12-09 | 2019-07-23 | 赤多尼公司 | Network infrastructure and switching by street lamp |
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Application publication date: 20120718 |
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