CN103067535A - Network structure facing road emergency wireless access and internet protocol (IP) flowing access method - Google Patents
Network structure facing road emergency wireless access and internet protocol (IP) flowing access method Download PDFInfo
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- CN103067535A CN103067535A CN2012105763289A CN201210576328A CN103067535A CN 103067535 A CN103067535 A CN 103067535A CN 2012105763289 A CN2012105763289 A CN 2012105763289A CN 201210576328 A CN201210576328 A CN 201210576328A CN 103067535 A CN103067535 A CN 103067535A
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Abstract
The invention discloses a network structure facing road emergency wireless access and internet protocol (IP) flowing access technology adopting the network structure, and is used for solving the problem of flowing user access in transportation communication service covering vast amounts of users in a city. In a network allowing centralized control, a terminal is supported to be automatically shifted among different access points (AS), an IP address can be ensured invariably, and supporting capacity of a wireless access flowing terminal to global IP business is ensured. At the same time, a system does not protect a data package in the shifting, the network structure is suitable for using in a flowing occasion, the terminal is located on the same AP coverage area during business transmission, and thus the network structure is suitable for most emergency rescue occasions.
Description
Technical field
The invention belongs to field of wireless communication, relate to a kind of in the road traffic communications applications, towards the network configuration of emergency communication, emergency command, and the mobile communication method that realizes portable terminal.
Background technology
Great traffic accidents emerges in an endless stream in recent years, and in the scene of the accident often relatively chaotic, personnel are numerous, on-the-spot commander relies on intercom, public's telecommunications substantially at present.Intercom can solve voice commander problem, but its used frequency is the ISM wave band, is subject to conflict and interference, and intercom can not solve the transmission problem of data, image.And public's telecommunications major defect is that capacity is limited, is difficult to carry out between different user the scheduling of resource of differentiated service priority.In case of emergency, a large amount of important command scheduling message and the communication requirement of general public mix the limited resource of competition.The two all can not fully ensure effective, the real-time and multiservice requirement of emergency communication.
In a word, along with day by day popularizing and development of common wireless communication, utilizing 3G or following 4G technology to support for intelligent transportation provides to communicate by letter, is an important approach.But as public's telecommunications, its use in professional domain exists bad adaptability, high, the unwarrantable defective of bandwidth of expense, and therefore emergent on-the-spot, laying special-purpose radio communication pipeline is the choosing of certainty.Networking and access technology that this patent proposes with regard to being based on this background.
Summary of the invention
Technical problem: in order to solve better in intelligent transportation is used, the mobile access that the frequent motion of vehicle brings and the problem of network operation management, the present invention proposes a kind of the solution reliably at the frequent mobile access point that causes of vehicle-mounted node switches and thing followed IP access problem, realize simple, need not change the ICP/IP protocol stack, and can improve the network configuration towards the road emergency wireless access of systems soft ware compatibility, and adopt the IP of this network configuration cut-in method that flows.
Technical scheme: the network configuration towards the road emergency wireless access of the present invention comprises:
One or several have and the mobile terminal of the wireless access of peripheral WAP (wireless access point) communication capacity;
One or several be arranged on the road or the road neighboring buildings in WAP (wireless access point), be used for to receive from the flow packet of terminal of wireless access, send destination address and be wireless access flow packet, other control and the configuration information of terminal; WAP (wireless access point) is interconnected by other parts usefulness IP (IPV4 or IPV6) agreement in the IP kernel heart net that is comprised of local wired network (such as Ethernet) or wireless network and the system;
A user account user real-time status server is used for recording pre-configured user profile, and record is included in line states, current login position in interior current user state simultaneously;
One or several IP operation forwarding servers wrap the access point that is forwarded to the mobile current access of terminal of wireless access for the IP that with destination address is the mobile terminal of wireless access;
An IP kernel heart net of supporting IPV4 or IPV6 is used for the communication between access point, user account and user's real-time status server, IP operation forwarding server.
The IP of this network configuration of the employing of the present invention cut-in method that flows comprises wireless access the flow on-position step of updating of terminal of the packet receiving step of terminal and wireless access that flows.Wireless access flows in the terminal data bag receiving step, the reception of packet depends on IP operation forwarding server node, the IP operation forwarding server has more than one network interface, one of them network interface is used for the IP operation forwarding server and carries out the IP communication with user account user real-time status server and WAP (wireless access point) respectively, other interface is connected on the port of router of IP network, each router port is corresponding to an IP network section, and the address assignment of IP network section is to the mobile terminal of wireless access.
In the on-position step of updating of the mobile terminal of wireless access, when the mobile terminal of wireless access is switched between the different radio access point, the consistency that keeps the mobile terminal location of wireless access, concrete method is: by WAP (wireless access point) to user account user real-time status server real-time update user current wireless access point, then user account user real-time status server is to the IP operation forwarding server real time propelling movement wireless access current wireless access point of terminal that flows, thereby realizes the consistency of customer location in the network.
Beneficial effect: the present invention compared with prior art has the following advantages:
Technical solution of the present invention is in allowing central controlled network, and support terminal automaticallyes switch between different AP, can guarantee that the IP address does not change, and guarantees that the mobile terminal of wireless access is to the tenability of all-IP business.But system does not protect the packet in switching, and the suitable occasion of using is for flowing, and terminal is in same AP coverage between professional transmission period, and this all is suitable for the most of occasions in the emergency management and rescue.And since switching time not long, for the insensitive business of mistake, in the unstrained situation of Radio Resource or the support.
Description of drawings
Fig. 1 is terminal networking process flow diagram among the present invention;
Fig. 2 is the flow chart that terminal is switched AP among the present invention;
Fig. 3 is the transmitting-receiving process flow diagram of IP bag among the present invention;
Fig. 4 is the transmitting-receiving process flow diagram that IP wraps under the multi-user among the present invention;
Fig. 5 is overall system frame construction drawing of the present invention.
Embodiment
Below in conjunction with drawings and Examples, further specify technical solution of the present invention.
Network configuration towards the road emergency wireless access of the present invention comprises:
One or several have and the mobile terminal of the wireless access of peripheral WAP (wireless access point) communication capacity, and its physical location is fixing, has the ability of communicating by letter with peripheral WAP (wireless access point), and by all kinds of servers in the WAP (wireless access point) connecting system.The IP operation terminal includes but not limited to computer, mobile phone, Embedded Vehicle Terminal etc.
One or several be arranged on the road or the road neighboring buildings in WAP (wireless access point), it is arranged in roadside or the neighboring buildings, be used for receiving the packet from the mobile terminal of wireless access, sending destination address is packet, other control and the configuration information of the mobile terminal of wireless access; Include but not limited to terminal networking registration, location register and renewal, IP address configuration etc.; AP has a radio network interface (being designated as AP-INTERFACE-W) with terminal communication at least, and one or several are wired or wireless, with the interface (being designated as AP-INTERFACE-L) of user account user real-time status server communication.AP by wired or wireless network insertion in system.
A user account user real-time status server (URSS), be used for recording pre-configured user profile, include but not limited to authentication information, user right, IP address information etc., record simultaneously current user state, be included in line states, current login position etc.;
One or several IP operation forwarding servers (IPTS) wrap the access point that is forwarded to the current access of terminal for the IP that with destination address is terminal address;
An IP network of supporting IPV4 or IPV6 is used for the communication between WAP (wireless access point), user account user real-time status server, IP operation forwarding server;
System initialization step hereinafter and system's operating procedure are described (comprising that wireless access portable terminal receive data packet procedures, wireless access portable terminal send process data packet, wireless access terminal handoff procedure) the mobile access implementing method of IP of this network configuration of employing of the present invention in detail.
One, system's operation initialization step
(1) AP in the network, URSS, IPTS are carried out initial configuration, the IP address of AP, URSS, IP operation forwarding server IPTS-INTERFACE-A network interface is set, guarantee to carry out between the three normal IP communication;
(2) configuration URSS registers or the user profile of packing into, starts an application layer services, and wait is connected connection from access point (AP) with IPTS;
(3) the some IPTS-INTERFACE-B interfaces with IPTS are connected to corresponding router port, and the TCP/IP that is created to URSS connects, and starts an application layer services, waits for the connection from access point (AP);
(4) AP starts, and creates a TCP/IP to URSS and connects, and download each portable terminal network segment corresponding IPTS server address and port list from URSS, and each terminal network segment is a list item;
(5) after mobile terminal-opening is arranged, send logging request by wireless chain control layer to the AP that accesses;
(6) this request is forwarded to URSS by AP;
(7) URSS carries out after the user authenticates, with pre-configured IP (such as the fixing terminal of IP) if or the IP address of distributing in real time or occured to switch to switch front IP address, and other network parameter passes to AP and delivers terminal, finishes the initialization of terminal initial IP address argument.URSS IPTS corresponding to this terminal notifies this user's current state and the AP that accesses simultaneously;
(8) IPTS receives the reposition of the terminal of its administration, carries out this locality registration, to build table for future reference;
(9) AP delivers terminal with the address parameter that receives, and AP sets up one to the TCP/IP connection of this terminal place subnet IPTS server, if connection has been arranged then not newly-built connection simultaneously;
(10) the terminal utilization address of receiving ICP/IP protocol stack parameter initialization just is if the address of receiving is with identical then be failure to actuate before.
Two, system's operating procedure
Terminal sends the process of IP bag:
When (1) terminal produced an IP bag, source IP was the IP (being made as IPS) of self, and purpose IP is the IP (being made as IPD) of opposite end, and the AP that this bag is given access by terminal processes;
(2) AP receives from wave point AP-INTERFACE-W, and the AP-INTERFACE-L of this bag through AP forwarded;
(3) router of this coated network the inside receives, and normally is routed to the destination node of this bag.
Terminal receives the process of IP bag:
(1) the IP bag is sent in the opposite end, and source IP is IPD, and destination address is IPS;
(2) the coated router of this IP receives, and routes to the corresponding network segment of IPS;
(3) continuous its certain the IPTS-INTERFACE-B interface of IPTS of this network segment obtains, IPTS utilizes previous AP and being connected of IPTS to be transferred to AP by its IPTS-INTERFACE-A interface in the mode of IP tunnel this IP packet according to the present residing AP of this terminal address of destination address inquiry of this IP bag subsequently.
(4) this AP is transmitted to terminal with the IP bag by the AP-INTERFACE-W interface;
(5) to receive a source address from the opposite end be IPD to terminal, and destination address is self packet of (IPS), finishes the reception operation of IP bag.
Terminal switching process:
(1) terminal is owing to the reasons such as movement cause former access AP (being designated as AP1) signal to weaken, and terminal is searched for the AP of current demand signal the best again, and process wireless chain control layer protocol switching is to new AP (being designated as AP2);
(2) event of the upper triggering of AP2, AP2 reports the terminal location change to URSS;
(3) after URSS receives terminal location change message, trigger two events at URSS, one is that the AP1 to the original access of terminal sends user's breakaway message to IPTS server (being designated as IPTS-T) corresponding to this terminal new terminal reposition more;
(4) the AP address of the current access of IPTS-T renewal user is updated to AP2 by AP1;
(5) AP1 finishes the follow-up cleaning work that terminal is left.
Accompanying drawing 1 has been described the terminal networking course of work.For simplicity, the connection of the IPTS-INTERFACE-A interface of IPTS not shown in FIG., lower same.Among the figure URSS to T1 preassignment address 10.1.1.2, mask is 255.255.255.0, omitted for simplicity gateway and DNS the configuration.Being described as follows of each step wherein: 1. terminal T1 finding out wireless access point AP1, and initiate the request of networking to AP1; 2. AP1 hands to URSS with this request, after the URSS authentication is complete, read preallocated IP address (10.1.1.2) (if terminal is switched the IP address before the sub-distribution more then), simultaneously inquiry IPTS server address IPTS1 corresponding to this IP address in its data storehouse; 3. since IPTS1 with URSS pre-established one be connected, URSS connects the reposition (AP1) of notice T1 by this; 4. the IPTS1 loopback is confirmed; 5. URSS is to AP1 transfer address and acknowledge message; 6. AP1 is to T1 loopback address (10.1.1.2) and acknowledge message.
Accompanying drawing 2 has been described terminal switching process, and that the original access of T1 terminal is AP1 among the figure.Compared to Figure 1, handling process is basic identical, and WAP (wireless access point) has become AP2, because switching has occured, therefore additionally notifies original access AP1, and this terminal breaks away from.Compare with accompanying drawing 1, the 7. and 8. step that has more is: 7. the URSS notice AP1 wireless access terminal T1 that flows breaks away from AP1; 8. AP1 loopback URSS acknowledge message.
Accompanying drawing 3 has provided the process that mobile node carries out the IP data transmit-receive to inquire about meteorological and road conditions as example.Wherein each step is described as follows: 1. terminal produces query requests, and the source address of IP is the address of T1, and the destination address of IP is address meteorological and the road conditions server; 2. AP2 sends this IP bag from its certain AP-INTERFACE-L interface, and the IP kernel heart net of going forward side by side routes to meteorological and road conditions server; 3. after meteorological and road conditions server receives this bag, produce response message, the source address of response message is the address of weather server, destination address is 10.1.1.2 (the IP address of T1), the coated 10.1.1.0/24 interface that normally is routed to router of this IP, and the IPTS1 that is attached thereto reception obtains; 4. IPTS1 learns this purpose IP at AP2 from the terminal location that URSS pushes, and IPTS1 inquires about the connection of AP2, and complete IP packet is handed to AP2; 5. AP2 solves complete data packet, and sends to T1 from the AP-INTERFACE-W network interface.
Accompanying drawing 4 has been described the situation that a plurality of user terminals are accessed certain server simultaneously.This figure illustrated, during different terminal access server, and the response message backhaul pathways of server.Because the network segment of T1 and T2 is different, the packet that server sends to them is routed to respectively the different network segments, and is processed by different IPTS.
Claims (2)
1. the network configuration towards the road emergency wireless access is characterized in that, this network configuration comprises:
One or several have and the mobile terminal of the wireless access of peripheral WAP (wireless access point) communication capacity;
One or several be arranged on the road or the road neighboring buildings in WAP (wireless access point), be used for to receive from the flow packet of terminal of wireless access, send destination address and be wireless access flow packet, other control and the configuration information of terminal; Described WAP (wireless access point) is interconnected by other parts usefulness IP agreement in the IP kernel heart net that is comprised of local wired network or wireless network and the system;
A user account user real-time status server is used for recording pre-configured user profile, and record is included in line states, current login position in interior current user state simultaneously;
One or several IP operation forwarding servers wrap the access point that is forwarded to the mobile current access of terminal of wireless access for the IP that with destination address is the mobile terminal of wireless access;
An IP kernel heart net of supporting IPV4 or IPV6 is used for the communication between access point, user account user real-time status server, IP operation forwarding server.
2. an IP who adopts the described network configuration towards the road emergency wireless access of claim 1 cut-in method that flows, it is characterized in that the method comprises the packet receiving step of the mobile terminal of wireless access and the on-position step of updating of the mobile terminal of wireless access;
Described wireless access flows in the terminal data bag receiving step, the reception of packet depends on IP operation forwarding server node, described IP operation forwarding server has more than one network interface, one of them network interface is used for the IP operation forwarding server and carries out the IP communication with user account user real-time status server and WAP (wireless access point) respectively, other interface is connected on the port of router of IP network, each router port is corresponding to an IP network section, and the address assignment of described IP network section is to the mobile terminal of wireless access;
In the on-position step of updating of the mobile terminal of described wireless access, when the mobile terminal of wireless access is switched between the different radio access point, the consistency that keeps the mobile terminal location of wireless access, concrete method is: by WAP (wireless access point) to user account user real-time status server real-time update user current wireless access point, then user account user real-time status server is to the IP operation forwarding server real time propelling movement wireless access current wireless access point of terminal that flows, thereby realizes the consistency of customer location in the network.
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| CN201210576328.9A CN103067535B (en) | 2012-12-26 | 2012-12-26 | Towards network structure and the mobile cut-in method of IP of road emergency wireless access |
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| CN201210576328.9A CN103067535B (en) | 2012-12-26 | 2012-12-26 | Towards network structure and the mobile cut-in method of IP of road emergency wireless access |
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| CN103067535B CN103067535B (en) | 2016-05-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106875705A (en) * | 2017-02-23 | 2017-06-20 | 上海赛可电子商务有限公司 | Road accident rescue system and its implementation |
| CN110621053A (en) * | 2019-06-06 | 2019-12-27 | 珠海全志科技股份有限公司 | Network distribution method, network distribution device and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106875705A (en) * | 2017-02-23 | 2017-06-20 | 上海赛可电子商务有限公司 | Road accident rescue system and its implementation |
| CN106875705B (en) * | 2017-02-23 | 2020-10-20 | 上海赛可电子商务有限公司 | Road accident rescue system and implementation method thereof |
| CN110621053A (en) * | 2019-06-06 | 2019-12-27 | 珠海全志科技股份有限公司 | Network distribution method, network distribution device and electronic equipment |
| CN110621053B (en) * | 2019-06-06 | 2022-09-09 | 珠海全志科技股份有限公司 | Network distribution method, network distribution device and electronic equipment |
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Granted publication date: 20160504 Termination date: 20211226 |