CN103476136A - Apparatus used for realizing interaction of 3G access network and 4G access network - Google Patents
Apparatus used for realizing interaction of 3G access network and 4G access network Download PDFInfo
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- CN103476136A CN103476136A CN2012101887988A CN201210188798A CN103476136A CN 103476136 A CN103476136 A CN 103476136A CN 2012101887988 A CN2012101887988 A CN 2012101887988A CN 201210188798 A CN201210188798 A CN 201210188798A CN 103476136 A CN103476136 A CN 103476136A
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Abstract
The invention provides an apparatus used for realizing interaction of a 3G access network and a 4G access network. The apparatus can be a wireless network controller (RNC) or an evolution base station (eNB). According to the apparatus of the invention, a new interface is added between the RNC of a 3G system and the eNB of an LTE system; through the new interface, point-to-point connection without a core network is established between the RNC and the eNB; the new interface is used to interact related information. By using the apparatus of the invention, interoperation between the LTE and the 3G system can be performed directly through the new interface; high-efficient interaction of the related information can be realized through the new interface; simultaneously, a data processing load generated to the core network can be reduced.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly a kind of device for realizing that 3G Access Network and 4G Access Network are mutual.
Background technology
There is multiple types in the wireless access network of 3GPP, as E-UTRAN and UTRAN exist simultaneously, for UE provides the wireless access service.At present between the 3GPP of different systems wireless access network, there is no direct interface, between E-UTRAN and UTRAN, there is no direct interface.Therefore, at present in the LTE system, if relate to the interoperability with the 3G system, as switching, RRC are redirected etc., all need to carry out Signalling exchange between the core net of Access Network by LTE and core net, 3G and wireless access network.Information interactive process between existing UTRAN and E-UTRAN system as shown in Figure 2.As seen from Figure 2, the information interactive process more complicated between existing UTRAN and E-UTRAN system, and the process time delay is longer.
Interoperability between multiple wireless technology, become the effective ways that improve communication quality, and especially the combination network of LTE system and existing mobile communication system seems even more important.Interoperability between different technologies need to realize between different systems that relevant information is reliable, mutual efficiently.The evolution base station (between eNB) of the current radio network controller in the 3G system (RNC) and LTE system, there is no mutual for relevant information between system of corresponding interface.Information interaction need to be forwarded by CN, thereby involves each network element of CN, and the process complexity, cause the information exchange time delay larger, and efficiency is lower, has increased the data process load of core net simultaneously.
At present, at GSM(2G) system and TD-SCDMA(3G) introduced the Iur-g interface between system, for realizing the mutual of relevant information between system, the protocol stack that this interface adopts is as shown in Figure 3.
But the TD-LTE system can't directly adopt the information interaction of this interface protocol realization and other system.
Summary of the invention
The invention provides the mutual device of a kind of 3G Access Network and 4G Access Network, to realize the high efficiency interactive of relevant information, and reduce the data process load that core net is produced.
The embodiment of the present invention provides a kind of RNC, and described RNC has the first interface that carries out the point-to-point information interaction for the evolution base station eNB with Long Term Evolution LTE system.
Preferably, described first interface support is sent to protocol Data Unit PDU the end points in corresponding tunnel.
Preferably, the ability that described first interface has comprises between the transmission signaling relevant to wireless application and back-up system up-downgoing data forwarding in handoff procedure.
Preferably, the chain of command of described first interface is carried by Internal call control protocol SCCP, MTP third level user's adaptation layer protocol M3UA, SCTP SCTP and internetworking protocol IP, and application protocol adopts Radio Network Subsystem Application Part RNSAP structure.
Preferably, the chain of command of described first interface is carried by SCTP and IP, and application protocol adopts the X2AP structure.
The embodiment of the present invention also provides a kind of eNB, it is characterized in that, described eNB has the second interface that carries out information interaction for the RNC with the third generation wireless communication system.
Preferably, described the second interface support is sent to protocol Data Unit PDU the end points in corresponding tunnel.
Preferably, the ability that described the second interface has comprises between the transmission signaling relevant to wireless application and back-up system up-downgoing data forwarding in handoff procedure.
Preferably, the chain of command of described the second interface is carried by Internal call control protocol SCCP, MTP third level user's adaptation layer protocol M3UA, SCTP SCTP and internetworking protocol IP, and application protocol adopts Radio Network Subsystem Application Part RNSAP structure.
Preferably, the chain of command of described the second interface is carried by SCTP and IP, and application protocol adopts the X2AP structure.
Preferably, the application protocol of described the second interface further comprises the protocol adaptation unit for the RNSAP structure.
As seen from the above technical solution, the present invention by introducing new interface between RNC and eNB, and set up reliable the connection, make between LTE and 3G system interoperability can directly by this, new interface carries out, and realized the high efficiency interactive of relevant information between two systems by this interface, reduced the data process load that CN is produced simultaneously.
The accompanying drawing explanation
Fig. 1 is existing 3GPP 3G and LTE mobile communications network configuration diagram;
Fig. 2 is the information interactive process schematic diagram between existing UTRAN and E-UTRAN system;
The protocol stack signal that Fig. 3 is the Iur-g interface between existing gsm system and TD-SCDMA system;
Fig. 4 is 3GPP 3G and the LTE mobile communications network configuration diagram after the present invention improves;
Fig. 5 is Iur-X interface protocol model schematic diagram of the present invention;
The first Iur-X protocol stack of the interface structural representation that Fig. 6 provides for the embodiment of the present invention;
The second Iur-X protocol stack of the interface structural representation that Fig. 7 provides for the embodiment of the present invention;
The third Iur-X protocol stack of the interface structural representation that Fig. 8 provides for the embodiment of the present invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
Main thought of the present invention is: by the RNC(3G system) and the eNB(LTE system) between introduce new interface (being described as the Iur-X interface herein), and set up reliable the connection, as shown in Figure 4, thereby make between LTE and 3G system interoperability can directly by this, new interface (Iur-X) carries out, and realize the high efficiency interactive of relevant information between two systems by this interface, reduce the data process load that CN is produced simultaneously.
Below enumerate the application example of the new interface based between this eNB and RNC, the present invention program is not limited to following illustrative example.
The basic principle of the new interface between eNB and RNC (Iur-X) is as follows:
1, should be open interface;
2, should support the exchange of signaling information between eNB and RNC, should support protocol Data Unit (PDU) is sent to the end points in corresponding tunnel simultaneously;
3, be logically the interface of the point-to-point between eNB and RNC;
Even 4 while not having direct physical connection between eNB and RNC, it should be also available that the logic of this new interface point-to-point connects.
The ability of the new interface between eNB and RNC (Iur-X) includes but not limited to:
1, the transmission signaling relevant to wireless application: the Iur-X interface should have the ambulant ability of supporting wave point between UTRAN and E-UTRAN.This ability comprises the support to functions such as wireless access network information interactions between the processing of switching, Radio Resource and system.
2, Iur-X tunnel: for handoff procedure up-downgoing data forwarding between back-up system.
New interface between eNB and RNC (Iur-X) protocol stack scheme case:
The Iur-X interface should adopt the Universal joint protocol model of 3GPP wireless access network, and its design principle is: protocal layers and each plane are logically independent of one another.Advise that this interface protocol model also consists of 3 layers of wireless network layer, transport network layer and physical layers.As shown in Figure 5, this interface protocol model consists of these three layers of wireless network layer, transport network layer and physical layers.Wherein, for the control plane of realizing signaling bear with independent of one another for the user plane of realizing Deta bearer.
The structure of protocol stack scheme 1 is as shown in Figure 6: RNC and eNB adopt identical protocol stack structure, the chain of command of Iur-X interface is by Internal call control protocol (SCCP, Skinny Call Control Protocol)/MTP third level user's adaptation layer protocol (M3UA)/SCTP (SCTP, Stream Control Transmission Protocol)/internetworking protocol (IP) is carried, application protocol adopts Radio Network Subsystem Application Part (RNSAP, Radio Network Subsystem Application Part) structure.
The structure of protocol stack scheme 2 is as shown in Figure 7: RNC and eNB adopt identical protocol stack structure, and the chain of command of Iur-X interface is carried by SCTP/IP, and application protocol adopts X2 interface application protocol (X2AP) structure.
The structure of protocol stack scheme 3 is as shown in Figure 8: the chain of command of RNC side Iur-X interface adopts SCCP/M3UA/SCTP/IP to be carried, and application protocol adopts the RNSAP structure; The eNB side is carried by SCTP/IP, and application protocol adopts the X2AP structure, and comprises the protocol adaptation unit to the RNSAP structure.
Above-mentioned protocol stack embodiment is not unique, in fact can also there is other to meet the protocol stack structure of this new interface standard, be that the number of plies of protocol stack and agreement that every layer is selected can also have alternate manner, for the one of ordinary skilled in the art, after having read this specification, be not difficult above-mentioned protocol stack structure is made to various changes, so the spirit and scope of the present invention should not limited by concrete protocol stack structure.
The properties example of the new interface between eNB and RNC (Iur-X):
For above-mentioned protocol stack scheme 1 and protocol stack scheme 2, consider that respectively two kinds of signaling bear modes are as follows:
The use of SCCP: SCCP is for being supported in the signaling message of mutual Iur-X application protocol (RNSAP) between eNB and RNC.
The use of SCTP: SCTP is for being supported in the signaling message of mutual Iur-X application protocol (X2AP) between eNB and RNC.
The function example of the new interface between eNB and RNC (Iur-X):
This new interface is at least supported following functions:
New interface between eNB and RNC (Iur-X) is set up;
Information interaction between eNB and RNC;
Public-measurement between eNB and RNC;
The reserved switching of Radio Resource between eUTRAN and UTRAN;
Wireless access network information management between eUTRAN and UTRAN (NACC/RIM);
This programme is not limited to top embodiment.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (11)
1. a radio network controller (RNC), is characterized in that, described RNC has the first interface that carries out the point-to-point information interaction for the evolution base station eNB with Long Term Evolution LTE system.
2. RNC according to claim 1, is characterized in that, described first interface support is sent to protocol Data Unit PDU the end points in corresponding tunnel.
3. RNC according to claim 1, is characterized in that, the ability that described first interface has comprises between the transmission signaling relevant to wireless application and back-up system up-downgoing data forwarding in handoff procedure.
4. RNC according to claim 1, it is characterized in that, the chain of command of described first interface is carried by Internal call control protocol SCCP, MTP third level user's adaptation layer protocol M3UA, SCTP SCTP and internetworking protocol IP, and application protocol adopts Radio Network Subsystem Application Part RNSAP structure.
5. RNC according to claim 1, is characterized in that, the chain of command of described first interface is carried by SCTP and IP, and application protocol adopts the X2AP structure.
6. an evolution base station eNB, is characterized in that, described eNB has the second interface that carries out the point-to-point information interaction for the radio network controller (RNC) with the third generation wireless communication system.
7. eNB according to claim 6, is characterized in that, described the second interface support is sent to protocol Data Unit PDU the end points in corresponding tunnel.
8. eNB according to claim 6, is characterized in that, the ability that described the second interface has comprises between the transmission signaling relevant to wireless application and back-up system up-downgoing data forwarding in handoff procedure.
9. eNB according to claim 6, it is characterized in that, the chain of command of described the second interface is carried by Internal call control protocol SCCP, MTP third level user's adaptation layer protocol M3UA, SCTP SCTP and internetworking protocol IP, and application protocol adopts Radio Network Subsystem Application Part RNSAP structure.
10. eNB according to claim 6, is characterized in that, the chain of command of described the second interface is carried by SCTP and IP, and application protocol adopts the X2AP structure.
11. eNB according to claim 10, is characterized in that, the application protocol of described the second interface further comprises the protocol adaptation unit for the RNSAP structure.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045660A (en) * | 2009-10-22 | 2011-05-04 | 华为技术有限公司 | Information interaction method, system, base station and network entity |
| WO2011157072A1 (en) * | 2010-06-13 | 2011-12-22 | 中兴通讯股份有限公司 | Method and system for implementing direct interface between access network nodes |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045660A (en) * | 2009-10-22 | 2011-05-04 | 华为技术有限公司 | Information interaction method, system, base station and network entity |
| WO2011157072A1 (en) * | 2010-06-13 | 2011-12-22 | 中兴通讯股份有限公司 | Method and system for implementing direct interface between access network nodes |
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Application publication date: 20131225 |