CN102740283B - Gateway equipment in long term evolution (LTE) system and data splitting method for gateway equipment - Google Patents
Gateway equipment in long term evolution (LTE) system and data splitting method for gateway equipment Download PDFInfo
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- CN102740283B CN102740283B CN201210209054.XA CN201210209054A CN102740283B CN 102740283 B CN102740283 B CN 102740283B CN 201210209054 A CN201210209054 A CN 201210209054A CN 102740283 B CN102740283 B CN 102740283B
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Abstract
The invention provides gateway equipment in a long term evolution (LTE) system and a data splitting method for the gateway equipment. The gateway equipment is positioned between an evolved node B (eNodeB) and a mobility management entity/serving gateway (MME/S-GW), and comprises a receiving unit, a data processing unit and a transmission unit, wherein the receiving unit receives a user plane data message which aims at a target network from the eNodeB, and directly receives a user data message returned from the target network; the data processing unit processes the user plane data message which is received from the eNodeB and the user data message which is directly returned from the target network; and the transmission unit forwards the user plane data message to the target network through a virtual general packet radio service tunneling protocol (GTP) GO interface instead of the MME/S-GW, and transmits a processed and returned user data message to the eNodeB.
Description
Technical field
The present invention relates to Long Term Evolution (LTE) technical field, more specifically, relate to a kind of gateway device in LTE system and data distribution method thereof.
Background technology
Mobile device as Long Term Evolution (LTE) technology of next generation mobile communication standard will adopt the transmission means of bandwidth intensive.Due to the high demand that mobile video/voice and the integration of three networks are served, always inadequate to the demand of bandwidth.According to investigation, the flow user demand of a smart mobile phone exceeds 25-30 doubly than present GSM mobile handset.Due to the increase of traffic demand, mobile network and gateway device all will face data congestion, and client is difficult to obtain satisfied service quality (QoS).
In existing LTE networking model, Evolved Universal Terrestrial wireless access network (E-UTRAN) and Mobility Management Entity/gateway (MME/S-GW) set up user face data tunnel, and MME/S-GW sets up Article 2 data tunnel with packet data gateway (P-GW) again; User face data first through MME/S-GW, then through P-GW, finally arrives the Internet (Internet), as shown in Figure 1.Fig. 2 shows the protocol stack of the user level under existing LTE networking model.In the prior art scheme, user data is by two GPRS Tunnel Protocol user face (GTP-U) tunnels, Article 1, tunnel is the tunnel of enode (eNodeB) to S-GW, Article 2 tunnel is the tunnel of S-GW to P-GW, after GPRS Tunnel Protocol (GTP) tunnel terminates on P-GW, by P-GW, upper layer application data are sent to the Internet by IP message.GTP-U data message comprises two parts: GTP-U channel message head and GTP transmission data units, and what comprise in GTP transmission data units is IP datagram literary composition, namely actual user data information.The upper layer data of GTP-U data message encapsulates IP/TCP message.
Shown in Fig. 3 is the transfer process of data under the LTE networking model of prior art.As shown in Figure 3, subscriber equipment (UE) exchanges chain of command signaling message and user face data message by eNodeB and MME/S-GW, then, by P-GW, user face data message is sent to the Internet by MME/SW.
In above networking mode, because all user data all need through S-GW and P-GW, so when data business volume is larger, very large pressure can be brought to S-GW and P-GW, the as easy as rolling off a log Consumer's Experience that causes is poor, business is not smooth, equipment of the core network also may be caused to paralyse and cause service disconnection.
Summary of the invention
The object of the present invention is to provide the gateway device in a kind of Long Term Evolution (LTE) system and data distribution method thereof, thus make user face data without the need to being directly forwarded to objective network (such as, the Internet) from gateway device according to the present invention through Mobility Management Entity/gateway (MME/S-GW).
For this reason, an aspect of of the present present invention provides the gateway device in a kind of LTE system, this gateway device is positioned between enode (eNodeB) and Mobility Management Entity/gateway (MME/S-GW), comprise: receiving element, receive the user face data message for the purpose of objective network from eNodeB, and directly receive the subscriber data message returned from objective network; Data processing unit, processes the user face data message received from eNodeB and the subscriber data message directly returned from objective network; Transmitting element, reprints (GO) interface without MME/S-GW by virtual GTP and user face data message is forwarded directly to objective network, and the subscriber data message returned after process is sent to eNodeB.
According to an aspect of the present invention, data processing unit removes the GTP-U channel message head of the user face data message received, replace original IP address of user face data message with new IP address, after network address translation, by transmitting element, user face data message is sent to objective network.
According to an aspect of the present invention, the IP address of the subscriber data message returned received from objective network is replaced with described original IP address by data processing unit, and the subscriber data message Reseal GTP-U head for returning, the subscriber data message after Reseal is sent back to eNodeB by transmitting element.
According to an aspect of the present invention, data processing unit is made up of Linux kernel module.
According to an aspect of the present invention, data processing unit is configured with virtual interface address pool, and data processing unit distributes described new IP address and replaces described original IP address from virtual interface address pool.
According to a further aspect in the invention, additionally provide a kind of data distribution method of the gateway device for LTE system, comprising: (a) receives the user face data message on ground for the purpose of objective network from enode eNodeB; B () processes user face data message, and by virtual GTP reprinting GO interface, the user face data message after process is forwarded directly to objective network; C () receives the subscriber data message directly returned from objective network; D () processes the subscriber data message returned, and the subscriber data message after process is sent back to eNodeB.
According to a further aspect in the invention, in the step (b) of described data distribution method, the GTP-U channel message head of the user face data message received is removed by gateway device unit, replace original IP address of user face data message with new IP address, after network address translation, user face data message is sent to objective network.
According to a further aspect in the invention, in the step (d) of described data distribution method, the IP address of the subscriber data message returned received from objective network is replaced with described original IP address by gateway device, and the subscriber data message Reseal GTP-U head for returning, then the subscriber data message after Reseal is sent back to eNodeB.
According to a further aspect in the invention, gateway device is configured with virtual interface address pool, and in step (b), gateway device distributes described new IP address and replaces described original IP address from virtual interface address pool.
Accompanying drawing explanation
By below in conjunction with exemplarily illustrating the description that the accompanying drawing of embodiment carries out, above and other object of the present invention and feature will become apparent, wherein:
Fig. 1 is the diagram of the networking structure that Long Term Evolution of the prior art (LTE) system is shown;
Fig. 2 shows the protocol stack of the user level under existing LTE networking model;
Shown in Fig. 3 is the transfer process of data under the LTE system networking model of prior art;
Fig. 4 is the diagram of the structure of the networking model of LTE system according to the embodiment of the present invention;
Fig. 5 is the diagram of the protocol stack according to the user level under the LTE system networking model of the embodiment of the present invention;
Fig. 6 is the structured flowchart of the reprinting gateway device 200 for streamed data according to the embodiment of the present invention;
Fig. 7 is the transmission schematic diagram according to the data under the LTE system networking model of the embodiment of the present invention;
Fig. 8 is the flow chart of the data distribution method of gateway device according to the embodiment of the present invention.
Embodiment
Below, embodiments of the invention are described in detail with reference to Fig. 4-Fig. 8.
Shown in Fig. 4 is the diagram of the structure of the networking model of LTE system according to the embodiment of the present invention.
As shown in Figure 4, networking structure comprises subscriber equipment (UE) 110, enode (eNodeB) 120, reprints gateway (Offload GW) 130, Mobility Management Entity/gateway (MME/S-GW) 140, grouped data network gateway (PDN GW) 150 and the Internet (Internet) 160.In this networking structure, differently from the networking structure of prior art be also exist between eNodeB 120 and MME/S-GW 140 according to reprinting gateway 130 of the present invention.In the diagram, what arrow A A represented is chain of command data and destination address is the routing direction of the data of other equipment of the core network such as MME/S-GW 140 or PDN GW 150, and it is still identical with pass-through mode of the prior art.The routing direction that what arrow B B represented is according to user face data message of the present invention.As shown in Figure 4, to arrive via eNodeB 120 from the user face data message of UE 110 and reprint after gateway 130, after the process of reprinting gateway 130, be directly forwarded to the Internet 160, and not through MME/S-GW 140 and PDN GW 150.Similarly, the user face data message returned from the Internet 160 is also be forwarded directly to reprint gateway 130, and is sent to eNodeB 120 and UE 110 after being processed by reprinting gateway 130.
Fig. 5 shows the diagram of the protocol stack according to the user level under the LTE system networking model of embodiment.As shown in Figure 5, GTP-U tunnel is after reprinting gateway Offload-GW, Offload-GW is terminated, GTP-U channel message head in the data message received from eNodeB removes by Offload-GW, the source IP address of the IP datagram literary composition of tunnel nexine is replaced with the IP address distributed by Offload-GW, and the IP datagram processed literary composition is delivered to the Internet from the sending and receiving of GTP reprinting (GO) interface direct.After the IP data-message that the Internet returns arrives Offload-GW, original IP address is replaced go back in the object IP address of the IP data-message received by Offload-GW, and sends it back eNodeB after Reseal GTP-U channel message head.Like this, pure user face data is no longer through S-GW and P-GW.
Fig. 6 is the structured flowchart of the reprinting gateway device 200 for streamed data according to the embodiment of the present invention.As shown in Figure 6, reprinting gateway device 200 according to the present invention comprises: receiving element 210, data processing unit 220 and transmitting element 230.
Receiving element 210 receives from eNodeB with the user face data message for the purpose of objective network (such as, the Internet).When receiving element 210 receives user face data message, data processing unit 220 pairs of user face data messages process.Particularly, data processing unit 220 maintains a GTP and reprints (GO) virtual address pond, whenever receiving the user face data message from UE 110, data processing unit 220 removes the GTP-U channel message head of the user face data message received, replace the original IP address in user face data message with the IP address that in GO virtual address pond is new, then network address translation (NAT) process is carried out to user face data message.Like this, the user face data message after data processing unit 220 processes can be sent out unit 230 and deliver to the Internet 160 via the sending and receiving of GO interface direct.Meanwhile, data processing unit 220 can keep the map listing of newly assigned IP address and original IP address.
Similarly, when receiving element 210 to receive the subscriber data message returned as the response to user face data message from the Internet, data processing unit 220 processes user data message.Particularly, original IP address is replaced go back in the object IP address of subscriber data message by data processing unit 220, and Reseal GTP-U channel message head.Subscriber data message after process is sent back to eNodeB 120 by transmitting element 230.The map listing that data processing unit 220 can keep according to it performs the replacement of IP address.Data processing unit 220 of the present invention can be made up of linux kernel module, with the efficiency of the distribution and replacement that ensure IP address.
Fig. 7 illustrates the transmission schematic diagram according to the data under the LTE system networking model of the embodiment of the present invention.As shown in Figure 7, UE 110 and MME/-SW 140 carries out the mutual of chain of command signaling message via eNodeB 120 and reprinting gateway 130, and this is identical with chain of command Signalling exchange of the prior art.With the transfer process of the data under the LTE system networking model of the prior art shown in Fig. 3 unlike, after the user face data message with GTP-U channel message head arrives reprinting gateway 130, reprint gateway 130 remove GTP-U channel message head and after replacing original IP address, the IP user's data-message removing GTP-U channel message head be forwarded to the Internet 160.The IP user's data-message removing GTP-U channel message head turns back to by the Internet 160 reprints gateway 130, and after adding GTP-U channel message head by reprinting gateway 130, the user face data message with GTP-U channel message head is sent to eNodeB 120.
Fig. 8 is the flow chart of the data distribution method of the gateway device illustrated according to the embodiment of the present invention.First, in step 810, reprinting gateway 130 receives the user face data message for the purpose of objective network from eNodeB 120.Next, in step 820, reprint gateway 130 pairs of user face data messages and process.Particularly, remove the GTP-U channel message head of the user face data message received, replace the original IP address in user face data message with new IP address, then network address translation (NAT) process is carried out to user face data message.In step 830, reprint gateway 130, by virtual GO interface, the user face data message after process is directly sent to objective network.Responsively, in step 840, reprint gateway 130 and receive the subscriber data message directly returned from objective network.In step 850, reprint gateway 130 and process the subscriber data message returned.Particularly, reprint gateway 130 and original IP address is replaced go back in the object IP address of subscriber data message, and Reseal GTP-U channel message head.Finally, in step 860, reprint gateway 130 and the subscriber data message after step 850 processes is sent back to eNodeB 120.
By the present invention, reprinting gateway can be utilized user face data directly to be reprinted object network and requires no MME/S-GW and P-GW, thus significantly reduce the burden of LTE network nucleus equipment.In addition, by using GO virtual interface and configuration virtual interface IP address pond, sufficient distributing and interchangeable private address can be provided for the data tunnel of UE, avoiding the bottleneck of user to visit capacity maximum while data service.Linux kernel module is used to complete distribution and the replacement of IP address, can guaranteed efficiency.Re-use NAT rule after substitute I P address, by upstream Interface, user data is forwarded to objective network (as Internet), user can be reached to objective network route.
Although illustrate and describe the present invention with reference to some exemplary embodiments of the present invention, but it should be appreciated by those skilled in the art that, when not departing from the spirit and scope of the present invention of claim and equivalents thereof, various change can be made in form and details.
Claims (5)
1. the gateway device in Long Term Evolution LTE system, between enode eNodeB and Mobility Management Entity/gateway MME/S-GW, described gateway device comprises:
Receiving element, receives the user face data message for the purpose of objective network from eNodeB, and directly receives the subscriber data message returned from objective network;
Data processing unit, processes the user face data message received from eNodeB and the subscriber data message directly returned from objective network;
Transmitting element, reprints interface without MME/S-GW by dummy general packet radio service tunnel agreement and user face data message is forwarded directly to objective network, and the subscriber data message returned after process is sent to eNodeB,
Wherein, data processing unit removes the general packet radio service GPRS Tunnel Protocol user face GTP-U channel message head of the user face data message received, original internet protocol address of user face data message is replaced with new IP address, after network address translation, by transmitting element, user face data message is sent to objective network
Wherein, the IP address of the subscriber data message returned received from objective network is replaced with described original IP address by data processing unit, and the subscriber data message Reseal GTP-U head for returning, the subscriber data message after Reseal is sent back to eNodeB by transmitting element.
2. as the gateway device in claim 1 as described in any one, wherein, data processing unit is made up of Linux kernel module.
3. gateway device as claimed in claim 1, wherein, data processing unit is configured with virtual interface address pool, and data processing unit distributes described new IP address and replaces described original IP address from virtual interface address pool.
4., for a data distribution method for the gateway device of Long Term Evolution LTE system, comprising:
A () receives the user face data message on ground for the purpose of objective network from enode eNodeB;
B () processes user face data message, and by dummy general packet radio service tunnel agreement reprinting interface, the user face data message after process is forwarded directly to objective network;
C () receives the subscriber data message directly returned from objective network;
D () processes the subscriber data message returned, and the subscriber data message after process is sent back to eNodeB,
Wherein, in step (b), gateway device removes the general packet radio service GPRS Tunnel Protocol user face GTP-U channel message head of the user face data message received, original IP address of user face data message is replaced with new internet protocol address, after network address translation, user face data message is sent to objective network
Wherein, in step (d), the IP address of the subscriber data message returned received from objective network is replaced with described original IP address by gateway device, and the subscriber data message Reseal GTP-U head for returning, then the subscriber data message after Reseal is sent back to eNodeB.
5. data distribution method as claimed in claim 4, wherein, gateway device is configured with virtual interface address pool, and in step (b), gateway device distributes described new IP address and replaces described original IP address from virtual interface address pool.
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| CN105165104B (en) * | 2014-02-13 | 2019-03-05 | 华为技术有限公司 | A kind of method, system and equipment for transmitting data |
| EP3145229B1 (en) | 2014-06-05 | 2020-03-11 | Huawei Technologies Co. Ltd. | Method and device for sending packet |
| CN105515720B (en) * | 2014-09-25 | 2019-02-26 | 中国电信股份有限公司 | The correlating method of signaling and data, device and system |
| CN106413120B (en) * | 2015-07-31 | 2021-09-21 | 华为技术有限公司 | Data sending method, device and system |
| CN107787017B (en) * | 2016-08-24 | 2019-11-12 | 大唐移动通信设备有限公司 | A kind of self study mode realizes the method locally shunted |
| CN106792897B (en) * | 2016-12-08 | 2019-08-30 | 京信通信系统（中国）有限公司 | Gateway shunt method and system in LTE-VPN evolved system |
| CN107333295B (en) | 2017-06-09 | 2021-04-06 | 京信通信系统（中国）有限公司 | Data distribution method and gateway |
| CN112073317B (en) * | 2019-06-10 | 2022-01-07 | 华为技术有限公司 | Method and device for sending message flow |
| CN113259498B (en) * | 2020-02-11 | 2022-06-17 | 大唐移动通信设备有限公司 | Local service distribution method and device, electronic equipment and storage medium |
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| CN1659908A (en) * | 2002-06-06 | 2005-08-24 | 汤姆森特许公司 | Wlan as a logical support node for hybrid coupling in an interworking between wlan and a mobile communications system |
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