CN103647855A - IP (Internet Protocol) address distribution method, device and system in cross-network communication - Google Patents
IP (Internet Protocol) address distribution method, device and system in cross-network communication Download PDFInfo
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Abstract
The invention provides an IP (Internet Protocol) address distribution method, a device and a system in cross-network communication. The IP address distribution method comprises that a second-level DHCP (Dynamic Host Configuration Protocol) server of a second network receives and stores an IP (Internet Protocol) address pool which is issued through a first-level DHCP server of a first network; the second-level DHCP server distributes an IP address for a user terminal in the stored IP address pool and stores the distributed IP address and an identity label of the user terminal when the second-level DHCP server receives an IP address distributing requirement which is sponsored through the user terminal; the second-level DHCP server returns the distributed IP address to the user terminal. The IP address distribution method has the advantages of solving the problems that long access network time delay caused by the fact that all the user terminals obtains the IP addresses from the same DHCP server and the network resource wasting is large and improving the cross-network communication performance.
Description
Technical field
The present invention relates to the communications field, in particular to the IP address assignment methods, devices and systems in outgoing telecommunication.
Background technology
WLAN (wireless local area network), refers to adopt IEEE802.11 wireless technology interconnects one group of computer and relevant device.WLAN (wireless local area network) (Wireless Local Area Network, be WLAN) refer to the LAN (Local Area Network) of making transmission medium with wireless channel, important supplement and the extension of wired networking mode, and become gradually a vital part in computer network, be widely used in needing removable data to process and maybe cannot carry out the field of physical transmission medium wiring.Along with formulation and the development of IEEE802.11 wireless network standards, make radio network technique more ripe and perfect.This technology is successfully widely used in numerous industries, as financial instrument, education, large enterprise, industrial and mineral harbour, government bodies, hotel, airport, army etc.The product of applying this technology mainly comprises: WAP (wireless access point), unlimited network interface card, wireless router, radio network gateway, wireless bridge etc.
Mainly there are two kinds of frameworks in WLAN, i.e. IBSS(Independent Basic Service Set, independent basic service set, also referred to as Ad-hoc) and BSS(Basic Service Set, Basic Service Set, also becomes Infrastructure).In IBSS framework, between user terminal, directly by wireless connections, communicate by letter, without specific equipment, carry out transfer communication.In BSS framework, between user terminal, all need to communicate by access point apparatus (Access Point, AP) transfer, and can access Internet business by AP.
At present, main flow Communications service provides the overwhelming majority to adopt cellular network, the technology of its application mainly comprises: GSM(Global System for Mobile communication, global system for mobile communications), GPRS(General Packet Radio Service, GPRS), EDGE(Enhanced Data rates for GSM Evolution, the enhanced data rates that GSM uses), CDMA(Code Division Multiple Access, code division multiple access access), WCDMA(Wireless cdma wireless CDMA), HSPA(High-Speed Packet Access, high-speed packet access), HSPA+, CDMA2000, TD-LTE(Time Division Long Term Evolution, timesharing Long Term Evolution), FDD-LTE(Frequency Division Duplexing LTE, frequency division duplexing LTE) etc.
Cellular network composition mainly contains following three parts: mobile radio station, base station sub-system, network subsystem.Mobile radio station is exactly network-termination device, such as mobile phone or some honeycomb industrial control equipments.Base station sub-system comprises: moving machine station (large steel tower), wireless transmitting-receiving equipments, dedicated network (being generally optical fiber), countless digital device etc., base station sub-system can be regarded as to the transducer between wireless network and cable network.
The schematic diagram that Wi-Fi as shown in Figure 1 adopts wire link and wireless link to carry out data passback, in the mode of wire transmission, the data of user terminal are after the eating dishes without rice or wine of Wi-Fi AP, by wired carrying to the router (as: border router) of IP bearer network, be transmitted back to gateway device then accessing Internet.Different from wire transmission mode, adopt the mobile Wi-Fi technology (for example adopting LTE network to carry out the LTE-Fi of data passback) of cellular network return link technology, there is LTE module, the data of user terminal via LTE-Fi AP after, by Wi-Fi, eat dishes without rice or wine to be converted to LTE signal data, by cellular core network, be delivered to gateway device, and then access internet.Owing to having adopted cellular radio to carry out data passback, mobile Wi-Fi technological break-through the physical location restriction of fixed network passback circuit, thereby allow Wi-Fi network design on mobile device, bus system for example, train, high ferro, subway system etc.
Figure 2 shows that the schematic diagram of the vehicle-mounted LTE-Fi network architecture.The Outside Access of passenger Wi-Fi terminal is by the Wi-Fi interface access network of LTE-Fi equipment (i.e. wireless router in figure), network data is forwarded to cellular network by LTE interface, again by the gateway device of cellular network, GGSN(Gateway GPRS Support Node for example, Gateway GPRS Support Node) and PGW(Packet Gateway, packet gateway) be linked into Internet(the Internet).
In scene shown in above-mentioned Fig. 2, user data process of passing through tunnel technology realizes internetwork communication.Take user to Internet(the Internet) access be example, user's visit data message elder generation is sent to Wi-Fi network by user terminal; Then the tunnel to Wi-Fi network access gateway by Wi-Fi access network, is transparent to Wi-Fi IAD by cellular network, after the network address is converted into public network address, then is sent to external network.In Wi-Fi IAD, can carry out webpage authentication and accounting to user, user is carried out to traffic monitoring simultaneously, can be used for user to carry out the charging based on surf time or surfing flow.In this process, mainly, by the IP address of user assignment, user data is screened.
Meanwhile, in this scene, user can also carry out local service access, and user data can directly forward by this locality, the home server being deployed on bus is conducted interviews, and without data are returned by cellular network.
Yet no matter above-mentioned wire transmission mode, or wireless transmission method, in outgoing telecommunication, issues IP address by the IAD of objective network, this mode causes the time delay of user terminal access objective network longer, and network resources waste is larger.
Summary of the invention
The object of the present invention is to provide the IP address assignment methods, devices and systems in a kind of outgoing telecommunication, to solve the above problems.
IP address assignment in a kind of outgoing telecommunication method is provided in an embodiment of the present invention, has comprised: the secondary Dynamic Host Configuration Protocol server of second network has received and stored the IP address pool that the one-level Dynamic Host Configuration Protocol server of first network issues; Secondary Dynamic Host Configuration Protocol server receives after the IP address assignment request of user terminal initiation, is that user terminal distributes an IP address, and preserves the IP address of distribution and the identify label of user terminal in the IP address pool of storage; Secondary Dynamic Host Configuration Protocol server returns to the IP address of distribution to user terminal.
IP address assignment device in a kind of outgoing telecommunication is also provided in an embodiment of the present invention, device is arranged in second network, comprise: IP address pool receives and memory module, the IP address pool issuing for receiving and store the first-stage dynamic host configuration Dynamic Host Configuration Protocol server of first network; IP address assignment module for receiving after the IP address assignment request of user terminal initiation, is that user terminal distributes an IP address, and preserves the IP address of distribution and the identify label of user terminal in the IP address pool of storage; IP address issues module, for return to the IP address of distribution to user terminal.
IP address assignment system in a kind of outgoing telecommunication is also provided in an embodiment of the present invention, has comprised the first-stage dynamic host configuration Dynamic Host Configuration Protocol server that is positioned at first network and the secondary Dynamic Host Configuration Protocol server that is positioned at second network; One-level Dynamic Host Configuration Protocol server, for distributing to secondary Dynamic Host Configuration Protocol server and issuing IP address pool; Secondary Dynamic Host Configuration Protocol server said apparatus.
The methods, devices and systems of the embodiment of the present invention adopt secondary IP address assignment mechanism, by the one-level Dynamic Host Configuration Protocol server that is deployed in the IAD in first network, be that the secondary Dynamic Host Configuration Protocol server that is deployed in each second network distributes unduplicated IP address pool, the IP address of user terminal is directly distributed by the secondary Dynamic Host Configuration Protocol server of second network, avoided each user terminal all to same Dynamic Host Configuration Protocol server, to obtain the time delay of the access network that IP address causes longer, and the problem that network resources waste is larger, has promoted the performance of outgoing telecommunication.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram that adopts wire link and wireless link to carry out data passback in relevant Wi-Fi technology;
Fig. 2 shows the schematic diagram of the relevant vehicle-mounted LTE-Fi network architecture;
Fig. 3 shows the flow chart of the IP address assignment method in the outgoing telecommunication that the embodiment of the present invention provides;
Fig. 4 shows the flow chart of the IP address assignment method in the outgoing telecommunication that the embodiment of the present invention provides;
Fig. 5 shows the structured flowchart of the IP address assignment device in the outgoing telecommunication that the embodiment of the present invention provides.
Embodiment
Below by specific embodiment, also by reference to the accompanying drawings the present invention is described in further detail.
Consider in outgoing telecommunication, each user terminal all obtains the mode of IP address to the IAD of same objective network, cause the time delay of user terminal access objective network longer, and network resources waste is larger, the embodiment of the present invention provides the methods, devices and systems of the IP address assignment in a kind of outgoing telecommunication, below by embodiment, is described.
The flow chart of the IP address assignment method in outgoing telecommunication shown in Figure 3, the method comprises the following steps:
Step S302, the secondary DHCP(Dynamic Host Configuration Protocol of second network, DHCP) server receives and stores the IP address pool that the one-level Dynamic Host Configuration Protocol server of first network issues; Wherein, each IP address in this IP address pool is all not identical;
Step S304, secondary Dynamic Host Configuration Protocol server receives after the IP address assignment request of user terminal initiation, is that user terminal distributes an IP address, and preserves the IP address of distribution and the identify label of user terminal in the IP address pool of storage;
Step S306, secondary Dynamic Host Configuration Protocol server returns to the IP address of distribution to user terminal.
The method of the present embodiment adopts secondary IP address assignment mechanism, by the one-level Dynamic Host Configuration Protocol server that is deployed in the IAD in first network, be that the secondary Dynamic Host Configuration Protocol server that is deployed in each second network distributes unduplicated IP address pool, the IP address of user terminal is directly distributed by the secondary Dynamic Host Configuration Protocol server of second network, avoided each user terminal all to same Dynamic Host Configuration Protocol server, to obtain the time delay of the access network that IP address causes longer, and the problem that network resources waste is larger, has promoted the performance of outgoing telecommunication.
For the ease of one-level Dynamic Host Configuration Protocol server, can identify better user terminal, the secondary Dynamic Host Configuration Protocol server of the present embodiment is after user terminal returns to the step of IP address of distribution, and said method also comprises: secondary Dynamic Host Configuration Protocol server sends to one-level Dynamic Host Configuration Protocol server by the corresponding relation of the identify label of the IP address of distribution and user terminal.
Consider that IP address is provided with useful life conventionally, the secondary Dynamic Host Configuration Protocol server of the present embodiment is after user terminal returns to the step of IP address of distribution, said method also comprises: secondary Dynamic Host Configuration Protocol server receives the IP address of user terminal initiation and re-rents after request, according to preserving the identify label of user terminal and the IP address corresponding relation of distribution, and the strategy of renewing a contract is defined as the IP address that user terminal is renewed a contract and distributed; Secondary Dynamic Host Configuration Protocol server informing user terminal has been re-rented the IP address of distribution.
In order more effectively to utilize the IP address resource in system, said method also comprises: secondary Dynamic Host Configuration Protocol server reports the distribution condition of IP address pool according to the cycle arranging to one-level Dynamic Host Configuration Protocol server; Secondary Dynamic Host Configuration Protocol server receives the IP address pool after the dynamic adjustment of one-level Dynamic Host Configuration Protocol server, and the IP address pool of using the IP address pool renewal after dynamically adjusting to store.
With in LTE-Fi scene, need to be that example describes across cellular network communication below.The main secondary IP address assignment mechanism that adopts in this example, by the one-level Dynamic Host Configuration Protocol server that is deployed in Wi-Fi IAD, be that the secondary Dynamic Host Configuration Protocol server that is deployed in each Wi-Fi access network distributes unduplicated IP address pool, user's IP address pool is directly distributed by the secondary Dynamic Host Configuration Protocol server of each Wi-Fi access network.The flow chart of the IP address assignment method in outgoing telecommunication shown in Figure 4, it comprises the following steps:
Step S402, the one-level Dynamic Host Configuration Protocol server that is deployed in Wi-Fi IAD distributes non-repetitive IP address pool to the secondary Dynamic Host Configuration Protocol server of each Wi-Fi access network;
Step S404, user terminal is initiated DHCP IP address assignment request message to Wi-Fi access network;
Step S406, Wi-Fi access network (being above-mentioned two layers of Dynamic Host Configuration Protocol server) this DHCP IP address assignment request message that terminates, in the IP address pool being assigned with, is the unique IP address of user assignment at it;
Step S408, Wi-Fi access network returns to corresponding DHCP IP address assignment response message to this user terminal.Preserve this IP address and user identity (for example MAC(Media Access Control, media access control) address simultaneously) binding relationship.
Step S410, user terminal, when the lease expires of IP address, is initiated DHCP IP address to Wi-Fi access network and is re-rented request message, for IP address, re-rents.
Step S412, request message is re-rented in Wi-Fi access network this DHCP IP address that terminates, for example, according to IP address and user identity (MAC Address) binding relationship, and other IP address strategy of renewing a contract, determine to for user renews a contract, return to DHCP IP address and re-rent back message using.
Further, in order effectively to safeguard the IP address pool in each Wi-Fi access network, the present embodiment adopts the address pool in each secondary Dynamic Host Configuration Protocol server of regular update, part as shown in step S416 to the S420 dotted line in Fig. 4, specifically comprises: Wi-Fi access network periodically upgrades the service condition (corresponding step S416) of this network ip address to the Dynamic Host Configuration Protocol server (being above-mentioned one-level Dynamic Host Configuration Protocol server) of Wi-Fi IAD.One-level Dynamic Host Configuration Protocol server is according to the IP address utilization of each Wi-Fi access network returning, regularly repartition the IP address pool ((corresponding step S418)) of each Wi-Fi access network, IP address pool to each access network increases and decreases (corresponding step S420), thereby realize, IP resource is dynamically adjusted to distribution according to the conditions of demand of each network.
In method shown in Fig. 4, by DHCP service being transferred to each Wi-Fi access network, guaranteeing that each user all distributes under unique IP address prerequisite, effectively reduce IP address assignment time delay, and evade the problem that IP address cannot be used when Cellular Networks link down, effectively saved cellular network bandwidth resources simultaneously.
Corresponding to said method, the embodiment of the present invention also provides the device of the IP address assignment in a kind of outgoing telecommunication, and this device is arranged in second network, for example, be arranged on the Dynamic Host Configuration Protocol server of above-mentioned second network, and referring to Fig. 5, this device comprises with lower module:
IP address pool receives and memory module 52, the IP address pool issuing for receiving and store the first-stage dynamic host configuration Dynamic Host Configuration Protocol server of first network;
IP address assignment module 54 for receiving after the IP address assignment request of user terminal initiation, is that user terminal distributes an IP address, and preserves the IP address of distribution and the identify label of user terminal in the IP address pool of storage;
IP address issues module 56, for return to the IP address of distribution to user terminal.
The device of the present embodiment adopts secondary IP address assignment mechanism, by the one-level Dynamic Host Configuration Protocol server that is deployed in the IAD in first network, be that the secondary Dynamic Host Configuration Protocol server that is deployed in each second network distributes unduplicated IP address pool, the IP address of user terminal is directly distributed by the secondary Dynamic Host Configuration Protocol server of second network, avoided each user terminal all to same Dynamic Host Configuration Protocol server, to obtain the time delay of the access network that IP address causes longer, and the problem that network resources waste is larger, has promoted the performance of outgoing telecommunication.
Further, said apparatus also comprises: corresponding relation notification module, and for the corresponding relation of the identify label of the IP address of IP address assignment module assignment and user terminal is sent to one-level Dynamic Host Configuration Protocol server.
Corresponding to the above-mentioned mode of re-renting, the device of the present embodiment also comprises: IP re-rents module in address, for receiving the IP address of user terminal initiation, re-rent after request, according to preserving the identify label of user terminal and the IP address corresponding relation of distribution, and the strategy of renewing a contract is defined as the IP address that user terminal is renewed a contract and distributed; IP re-rents notification module in address, has re-rented the IP address of distribution for informing user terminal.
Further, said apparatus also comprises: distribution condition reporting module, for reporting the distribution condition of IP address pool to one-level Dynamic Host Configuration Protocol server according to the cycle of setting; IP address pool update module, for receiving the IP address pool after one-level Dynamic Host Configuration Protocol server is dynamically adjusted, and the IP address pool after the dynamic adjustment of use is upgraded the IP address pool of storage.
Corresponding to said method and device, the embodiment of the present invention also provides the system of the IP address assignment in a kind of outgoing telecommunication, comprises the first-stage dynamic host configuration Dynamic Host Configuration Protocol server that is positioned at first network and the secondary Dynamic Host Configuration Protocol server that is positioned at second network;
One-level Dynamic Host Configuration Protocol server, for distributing to secondary Dynamic Host Configuration Protocol server and issuing IP address pool;
Secondary Dynamic Host Configuration Protocol server comprises said apparatus, and its structure can be as shown in Figure 5.
Further, one-level Dynamic Host Configuration Protocol server also comprises: the dynamic adjusting module of IP address pool, for receiving one-level Dynamic Host Configuration Protocol server, report after the distribution condition of IP address pool, and according to distribution condition, be dynamically adjusted into the IP address pool that one-level Dynamic Host Configuration Protocol server distributes; IP address pool issues module, for the IP address pool after dynamically adjusting is handed down to one-level Dynamic Host Configuration Protocol server.
The method of salary distribution of above-mentioned inter-network IP address is mainly used in outgoing telecommunication, for example, in LTE-Fi scene, need to be across cellular network communication, long-range VPN(Virtual Private Network for example again, VPN (virtual private network)), need to communicate by letter across public network (metropolitan area network).
Above embodiment is by transferring to each Wi-Fi access network by the function of Dynamic Host Configuration Protocol server distributing IP address, guaranteeing that each user terminal all distributes under the prerequisite of unique IP address, effectively reduce the time delay of IP address assignment, and evade the problem that IP address cannot be used when Cellular Networks link down, effectively saved cellular network bandwidth resources simultaneously.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the IP address assignment method in outgoing telecommunication, is characterized in that, comprising:
The two-stage dynamic host configuration Dynamic Host Configuration Protocol server of second network receives and stores the IP address pool that the one-level Dynamic Host Configuration Protocol server of first network issues;
Described secondary Dynamic Host Configuration Protocol server receives after the IP address assignment request of user terminal initiation, is that described user terminal distributes an IP address, and preserves the described IP address of distribution and the identify label of described user terminal in the described IP address pool of storage;
Described secondary Dynamic Host Configuration Protocol server returns to the described IP address of distribution to described user terminal.
2. method according to claim 1, is characterized in that, described secondary Dynamic Host Configuration Protocol server is after described user terminal returns to the step of described IP address of distribution, and described method also comprises:
Described secondary Dynamic Host Configuration Protocol server sends to described one-level Dynamic Host Configuration Protocol server by the corresponding relation of the identify label of the described IP address of distributing and described user terminal.
3. method according to claim 1, is characterized in that, described secondary Dynamic Host Configuration Protocol server is after described user terminal returns to the step of described IP address of distribution, and described method also comprises:
Described secondary Dynamic Host Configuration Protocol server receives the IP address of user terminal initiation and re-rents after request, according to the identify label of described user terminal of preserving and the corresponding relation of the described IP address of distribution, and the strategy of renewing a contract is defined as the described IP address that described user terminal is renewed a contract and distributed;
The described IP address that described secondary Dynamic Host Configuration Protocol server notifies described user terminal to re-rent distribution.
4. method according to claim 1, is characterized in that, described method also comprises:
Described secondary Dynamic Host Configuration Protocol server reports the distribution condition of described IP address pool according to the cycle arranging to described one-level Dynamic Host Configuration Protocol server;
Described secondary Dynamic Host Configuration Protocol server receives the IP address pool after described one-level Dynamic Host Configuration Protocol server is dynamically adjusted, and uses the IP address pool after described dynamic adjustment to upgrade the described IP address pool of storing.
5. the IP address assignment device in outgoing telecommunication, is characterized in that, described device is arranged in second network, comprising:
IP address pool receives and memory module, the IP address pool issuing for receiving and store the first-stage dynamic host configuration Dynamic Host Configuration Protocol server of first network;
IP address assignment module for receiving after the IP address assignment request of user terminal initiation, is that described user terminal distributes an IP address, and preserves the described IP address of distribution and the identify label of described user terminal in the described IP address pool of storage;
IP address issues module, for return to the described IP address of distribution to described user terminal.
6. device according to claim 5, is characterized in that, described device also comprises:
Corresponding relation notification module, for sending to described one-level Dynamic Host Configuration Protocol server by the corresponding relation of the identify label of the described IP address of described IP address assignment module assignment and described user terminal.
7. device according to claim 5, is characterized in that, described device also comprises:
IP re-rents module in address, for receiving the IP address of user terminal initiation, re-rent after request, according to the identify label of described user terminal of preserving and the corresponding relation of the described IP address of distribution, and the strategy of renewing a contract is defined as the described IP address that described user terminal is renewed a contract and distributed;
IP re-rents notification module in address, for the described IP address of notifying described user terminal to re-rent distribution.
8. device according to claim 5, is characterized in that, described device also comprises:
Distribution condition reporting module, for reporting the distribution condition of described IP address pool according to the cycle of setting to described one-level Dynamic Host Configuration Protocol server;
IP address pool update module, for receiving the IP address pool after described one-level Dynamic Host Configuration Protocol server is dynamically adjusted, and is used the IP address pool after described dynamic adjustment to upgrade the described IP address pool of storing.
9. the IP address assignment system in outgoing telecommunication, is characterized in that, comprises the first-stage dynamic host configuration Dynamic Host Configuration Protocol server that is positioned at first network and the secondary Dynamic Host Configuration Protocol server that is positioned at second network;
Described one-level Dynamic Host Configuration Protocol server, for distributing to described secondary Dynamic Host Configuration Protocol server and issuing IP address pool;
Described secondary Dynamic Host Configuration Protocol server comprises the device described in any one in claim 5 to 8.
10. system according to claim 9, is characterized in that, described one-level Dynamic Host Configuration Protocol server also comprises:
The dynamic adjusting module of IP address pool, reports after the distribution condition of described IP address pool for receiving described one-level Dynamic Host Configuration Protocol server, according to described distribution condition, is dynamically adjusted into the IP address pool that described one-level Dynamic Host Configuration Protocol server distributes;
IP address pool issues module, for the IP address pool after dynamically adjusting is handed down to described one-level Dynamic Host Configuration Protocol server.
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| CN113225311B (en) * | 2021-03-24 | 2022-03-08 | 深圳市风云实业有限公司 | Cross-network tunnel transmission method based on identity |
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