CN101489271B - Control method for switching between network elements - Google Patents
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- CN101489271B CN101489271B CN2008100023826A CN200810002382A CN101489271B CN 101489271 B CN101489271 B CN 101489271B CN 2008100023826 A CN2008100023826 A CN 2008100023826A CN 200810002382 A CN200810002382 A CN 200810002382A CN 101489271 B CN101489271 B CN 101489271B
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Abstract
The present invention discloses a switching control method between network elements, wherein, after the UE completes the switching from a source eNode B to the target eNode B, the target eNode B transmits path switching request information to MME, and a first identification and a source eNodeB positioning identification are carried in the path switching request information. The MME positions the connection between MME and eNode B according to positioning identification, further positions the UE and updates the path switching. Or the target eNode B transmits path switching request information to MME and carries UE identification in the path switching request information. The MME positions UE according to UE identification and updates the path switching. Through the invention, the MME can be positioned to the user equipment thereby updating the path switching. The method of the invention settles the problem that the user equipment can not be positioned in the prior art.
Description
Technical field
The present invention relates to switch between the network in the GSM, particularly, relate to a kind of control method for switching between network elements.
Background technology
Along with global microwave access intercommunication (World Interoperability for MicrowaveAccess; Abbreviate Wimax as) sudden emergence; 3-G (Generation Three mobile communication system) will keep its strong competitiveness in moving communicating field, must improve its network performance and reduce networking and operation cost.
Therefore; 3GPP (3rd Generation Partnership Project; Third generation partner program) standardization effort group is just being endeavoured research at present to PS Core (Packet SwitchCore; The packet switch core net) and the evolution of UTRAN (Universal MobileTelecommunication System Radio Access Network, global system for mobile communications wireless access network), the problem of the research is called System Architecture Evolution (SystemArchitecture Evolution; Be called for short SAE) and Long Term Evolution (the Long TermEvolution of Access Network; Be called for short LTE), wherein the Access Network of evolution is called E-UTRAN (EvolvedUTRAN, the UTRAN of evolution).
The purpose of networking evolution provides a kind of low time delay, high data rate, high power system capacity and high covering, low-cost, complete IP-based network.
Wherein, Fig. 1 shows the framework of E-UTRAN.
As shown in Figure 1, E-UTRAN is by eNode B (E-UTRAN NodeB, the Node B of evolution; Abbreviate eNB as) form, for user's access provides Radio Resource; ENodeB carries out alternately through X2 interface each other; ENode B and EPC (Evolved PacketCore, the packet-based core networks of evolution) link to each other through the S1 interface; Be the relation of multi-to-multi between MME/S-GW on the S1 interface and the eNode B.
Wherein, MME (Mobility Management Entity, mobile management entity) is the chain of command functional entity that is positioned at core net EPC (Evolved Packet Core, the bag core net of evolution); Serving GW (Gateway) is a gateway, is positioned at the user entity of core net EPC.
Switching between network element is a basic procedure that guarantees user mobility in the GSM; When switching between the eNode B, MME/S-GW possibly change, and also possibly not change; In the EPS system, different switching flows is arranged at present respectively to both of these case.
Fig. 2 shows the switching flow under the immovable situation of MME/S-GW when switching between the eNode B.As shown in Figure 2, specifically comprise following processing (201-209):
201, eNode B in source carries out handover decisions according to the measurement report of UE, and the switching between the eNode B is initiated in decision;
202, eNode B in source initiates handoff request message to target eNode B, and notification target eNode B switches preparation;
203, target eNode B switching is ready, returns handoff request to source eNode B and replys, and confirms and can switch to source eNode B;
204, eNode B in source sends switching command message to UE, and order UE begins to switch;
205, UE switches and to finish, success be linked into Target cell after, send switch acknowledgment message to target eNode B;
206, target eNode B is to MME transmit path conversion request message, and sub-district, notice MMEUE place changes;
207, MME finds corresponding UE and S-GW to carry out path conversion renewal together;
208, MME is to target eNode B return path conversion response message;
209, target eNode B receives that the message authentication that MME returns switches completion, and eNode B sends the release message related to resources to the source, and notification source eNode B discharges the relevant resource of UE.
In the step 207 of this flow process, MME receives after the path switching request information of eNode B, find corresponding UE and S-GW to carry out the path conversion together and upgrade.
Carry MME UE S1AP ID (MME is the S1AP sign of user equipment allocation) and eNode B UE S1AP ID (eNode B is the S1AP sign of user equipment allocation) in the path switching request information that defines in the standard at present; Wherein, The eNode B UES1AP ID here is the newly assigned sign of target eNode B, therefore can't be used for positioning UE; Though MME UE S1AP ID is MME is the S1AP sign that UE distributes, and MMEUE S1AP ID is unique in the S1 of an eNode B and MME is connected, so only in the MME scope, can't navigate to a UE through MME UE S1AP ID.
Therefore, the message content that defines in the standard at present is abundant inadequately, when between eNode B, switching under the immovable situation of MME/S-GW, can't make MME find the UE of the correspondence behind the position change through said method.
Summary of the invention
When considering between eNode B, switching of existing in the correlation technique under the immovable situation of MME/S-GW, can not make MME find the problem of the UE behind the position change to propose the present invention through present technical scheme.For this reason, the present invention aims to provide the control method of switching between a kind of network element, and it can address the above problem.
According to the present invention, a kind of control method for switching between network elements is provided, be used for the immovable eNode B of mobile management entity/gateway handoff procedure is controlled.
Control method for switching between network elements according to the embodiment of the invention comprises following processing: accomplish from the source eNode B after the switching of target eNode B at subscriber equipment; Target eNode B is to mobile management entity transmit path conversion request message, and in path switching request information, carries first sign and the source eNode B positioning mark; Mobile management entity navigates to being connected between mobile management entity and the source eNode B according to source eNode B positioning mark, further navigates to subscriber equipment, and renewal is directly changed in the walking along the street of going forward side by side.
On the one hand; Above-mentioned first sign is that mobile management entity is that the mobile management entity subscriber equipment S1 Application of Interface sign of user equipment allocation is a MME UE S1AP sign, and source eNode B positioning mark can be source eNode B sign, source eNode B title or eNode B IP address, source.
At this moment; Mobile management entity navigates to being connected between mobile management entity and the source eNode B according to source eNode B positioning mark; The operation that further navigates to subscriber equipment is specially: mobile management entity navigates to source eNode B according to source eNode B positioning mark, and then navigates to being connected between mobile management entity and the source eNode B; Mobile management entity further according to MME UE S1AP mark location to subscriber equipment.
Wherein, in above-mentioned processing, mobile management entity is safeguarded the corresponding relation of MME UE S1AP sign and customer equipment identification in advance.
According to a further aspect in the invention, a kind of control method for switching between network elements is provided, has been used for handoff procedure between the immovable eNode B of mobile management entity/gateway is controlled.
Control method for switching between network elements according to the embodiment of the invention comprises: accomplish from the source eNode B after the switching of target eNode B at subscriber equipment; Said target eNode B is to mobile management entity transmit path conversion request message, and in said path switching request information, carries the subscriber equipment positioning mark; Said mobile management entity navigates to said subscriber equipment according to said subscriber equipment positioning mark, and renewal is directly changed in the walking along the street of going forward side by side.
Wherein, above-mentioned subscriber equipment positioning mark can be: casual user's device identification, permanent customer equipment identification.
Preferably, subscriber equipment is accomplished from source eNode B and specifically comprised to the process of the switching of target eNode B: source eNode B sends handoff request to target eNode B, and in request message, carries the subscriber equipment positioning mark; Target eNode B sends handoff request to source eNode B and replys; Source eNode B sends switching command to subscriber equipment; Subscriber equipment switches, successfully insert Target cell after, send switch acknowledgment message to target eNode B.
Through the present invention,, can upgrade operation thereby carry out the path conversion so that mobile management entity navigates to subscriber equipment through in the path switching request information that mobile management entity sends, carrying positioning mark at target eNode B.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the sketch map according to the E-UTRAN framework of correlation technique;
Fig. 2 is the signaling process figure that switches between network element according under the immovable situation of the MME/S-GW of correlation technique;
Fig. 3 is the flow chart according to the control method for switching between network elements of the embodiment of the invention one;
Fig. 4 is the signaling process figure according to the instance 1 of the control method for switching between network elements of the embodiment of the invention one;
Fig. 5 is the flow chart according to the control method for switching between network elements of the embodiment of the invention two;
Fig. 6 is the signaling process figure according to the instance 2 of the control method for switching between network elements of the embodiment of the invention two.
Embodiment
As stated; In the MME path transfer process that adopts at present; MME only relies on the MME UE S1AP ID in the path switching request information can't navigate to subscriber equipment, and Given this, the embodiment of the invention provides a kind of control method for switching between network elements; It makes MME can navigate to subscriber equipment through path switching request information is provided with.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Method embodiment one
According to the embodiment of the invention, a kind of control method for switching between network elements is provided, this method can realize through the E-UTRAN framework shown in Fig. 1.Fig. 3 shows the flow chart according to the control method for switching between network elements of the embodiment of the invention.As shown in Figure 3, this method comprises following processing (step S302-step S304):
Step S302 accomplishes from the source eNode B after the switching of target eNode B at UE, and target eNode B is to MME transmit path conversion request message, and in path switching request information, carries first sign and the source eNode B positioning mark;
Here first sign of mentioning is that MME is the MME UE S1AP ID that UE distributes; Source eNode B positioning mark can be source eNode B sign, source eNode B title, eNode B IP address, source etc.
Step S304, MME navigates to being connected between MME and the source eNode B according to positioning mark, further navigates to UE, and renewal is directly changed in the walking along the street of going forward side by side.
Below will further describe the above embodiments through instance.
Instance 1: positioning mark is source eNode B ID
As shown in Figure 4, be under the situation of source eNode B ID at positioning mark, can comprise following processing (401-409) according to the control method for switching between network elements of the embodiment of the invention:
401, eNode B in source carries out handover decisions according to the measurement report of UE, and the switching between the eNode B is initiated in decision;
402, eNode B in source initiates handoff request message to target eNode B, and notification target eNode B switches preparation;
403, target eNode B switching is ready, returns handoff request to source eNode B and replys, and confirms and can switch to source eNode B;
404, eNode B in source sends switching command message to UE, and order UE begins to switch;
405, UE switches and to finish, success be linked into Target cell after, send switch acknowledgment message to target eNode B;
406, target eNode B is to MME transmit path conversion request message, and sub-district, notice MMEUE place changes, and except carrying MME UE S1AP ID, also will carry source eNode B sign (Source eNode B ID) in the message;
407, MME to source eNode B, further navigates to being connected between MME and the source eNode B according to source eNode B mark location, finds corresponding UE and S-GW to carry out path conversion renewal together according to MME UE S1AP ID again;
408, MME is to target eNode B return path conversion response message;
409, target eNode B receives that the message authentication that MME returns switches completion, and eNode B sends the release message related to resources to the source, and notification source eNode B discharges the relevant resource of UE.
In the superincumbent explanation, MME need safeguard the corresponding relation of MME UE S1AP sign and customer equipment identification in advance.
Method embodiment two
Control method for switching between network elements is used for handoff procedure between the immovable eNode B of mobile management entity/gateway is controlled.
Fig. 5 is the flow chart according to the control method for switching between network elements of the embodiment of the invention.As shown in Figure 5, this method comprises:
Step S502 accomplishes from the source eNode B after the switching of target eNode B at UE, and said target eNode B is to MME transmit path conversion request message, and in said path switching request information, carries the UE positioning mark;
Here the UE positioning mark of mentioning can be casual user's device identification (TemporaryMobile Subscriber Identity; Abbreviate TMSI as) or permanent customer equipment identification (International Mobile Subscriber Identity abbreviates IMSI as) etc.
Step S504, MME navigates to UE according to the UE positioning mark, and renewal is directly changed in the walking along the street of going forward side by side.
In step S502, UE accomplishes from source eNode B and specifically comprises to the process of the switching of target eNode B: source eNode B sends handoff request to target eNode B, and in request message, carries above-mentioned UE positioning mark; Target eNode B sends handoff request to source eNode B and replys; Source eNode B sends switching command to subscriber equipment; Subscriber equipment switches, successfully insert Target cell after, send switch acknowledgment message to target eNode B.
Can understand the foregoing description better through following instance.
Instance 2: positioning mark is UE ID
As shown in Figure 6, be under the situation of UE ID at positioning mark, can comprise following processing (501-509) according to the control method for switching between network elements of the embodiment of the invention:
601, eNode B in source carries out handover decisions according to the measurement report of UE, and the switching between the eNode B is initiated in decision;
602, eNode B in source initiates handoff request message to target eNode B, and notification target eNode B switches preparation, also will carry UE ID in the message;
603, target eNode B switching is ready, returns handoff request to source eNode B and replys, and confirms and can switch to source eNode B;
604, eNode B in source sends switching command message to UE, and order UE begins to switch;
605, UE switches and to finish, success be linked into Target cell after, send switch acknowledgment message to target eNode B;
606, target eNode B is to MME transmit path conversion request message, and sub-district, notice MMEUE place changes, and carries UE ID in the message;
607, MME finds corresponding UE and S-GW to carry out path conversion renewal together according to UE ID;
608, MME is to target eNode B return path conversion response message;
609, target eNode B receives that the message authentication that MME returns switches completion, and eNode B sends the release message related to resources to the source, and notification source eNode B discharges the relevant resource of UE.
Can find out through the top technical scheme that provides; Through in path switching request information, adding source eNode B sign and UE ID; Can be so that MME navigate to subscriber equipment, upgrade thereby carry out the path conversion, solved the problem that can't navigate to subscriber equipment in the technology of present employing.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. control method for switching between network elements, the Node B that is used for the immovable evolution of mobile management entity/gateway is that handoff procedure is controlled between eNode B, it is characterized in that said method comprises following processing:
Accomplish from the source eNode B after the switching of target eNode B at subscriber equipment, said target eNode B is to mobile management entity transmit path conversion request message, and in said path switching request information, carries first sign and the source eNode B positioning mark;
Said mobile management entity navigates to being connected between said mobile management entity and the said source eNode B according to said source eNode B positioning mark, further navigates to said subscriber equipment, and renewal is directly changed in the walking along the street of going forward side by side.
2. method according to claim 1; It is characterized in that; Said first sign is that mobile management entity is that the mobile management entity subscriber equipment S1 Application of Interface sign of user equipment allocation is a MME UE S1AP sign, and said source eNode B positioning mark comprises: source eNode B sign, source eNode B title, eNode B IP address, source.
3. method according to claim 2 is characterized in that, said mobile management entity navigates to being connected between said mobile management entity and the said source eNode B according to said positioning mark, and the operation that further navigates to said subscriber equipment is specially:
Said mobile management entity navigates to said source eNode B according to said source eNode B positioning mark, and then navigates to being connected between said mobile management entity and the said source eNode B;
Said mobile management entity further arrives said subscriber equipment according to said MME UE S1AP mark location.
4. method according to claim 3 is characterized in that, further comprises:
Said mobile management entity is safeguarded the corresponding relation of MME UE S1AP sign and customer equipment identification in advance.
5. a control method for switching between network elements is used for handoff procedure between the immovable eNode B of mobile management entity/gateway is controlled, and it is characterized in that said method comprises following processing:
Accomplish from the source eNode B after the switching of target eNode B at subscriber equipment, said target eNode B is to mobile management entity transmit path conversion request message, and in said path switching request information, carries the subscriber equipment positioning mark;
Said mobile management entity navigates to said subscriber equipment according to said subscriber equipment positioning mark, and renewal is directly changed in the walking along the street of going forward side by side.
6. method according to claim 5 is characterized in that, said subscriber equipment positioning mark comprises: casual user's device identification, permanent customer equipment identification.
7. method according to claim 5 is characterized in that, the process that said subscriber equipment is accomplished from said source eNode B to the switching of said target eNode B specifically comprises:
Said source eNode B sends handoff request to said target eNode B, and in described request message, carries said subscriber equipment positioning mark;
Said target eNode B sends handoff request to said source eNode B and replys;
Said source eNode B sends switching command to said subscriber equipment;
Said subscriber equipment switches, successfully insert Target cell after, send switch acknowledgment message to target eNode B.
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| CN2008100023826A CN101489271B (en) | 2008-01-15 | 2008-01-15 | Control method for switching between network elements |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011029242A1 (en) * | 2009-09-14 | 2011-03-17 | 中兴通讯股份有限公司 | Method, system and enhanced base station for processing handover |
| CN102056130A (en) * | 2009-11-02 | 2011-05-11 | 中兴通讯股份有限公司 | Method, system and device for selecting target MME during mobile terminal switching |
| CN102843738B (en) * | 2011-06-22 | 2017-07-11 | 中兴通讯股份有限公司 | Determine the method and apparatus of terminal management mark and wireless signaling in switching |
| CN107360569B (en) * | 2013-12-27 | 2020-12-04 | 华为技术有限公司 | Security key context distribution method, mobile management entity and base station |
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|---|---|---|---|---|
| CN1934834A (en) * | 2004-02-06 | 2007-03-21 | 松下电器产业株式会社 | Communication handover method, communication message processing method, and program for executing these methods by use of computer |
| CN101087475A (en) * | 2006-08-21 | 2007-12-12 | 中兴通讯股份有限公司 | Switching method between evolved wireless system and traditional wireless system |
| CN101103648A (en) * | 2005-01-13 | 2008-01-09 | 艾利森电话股份有限公司 | System and method for call handoff between circuit switched and packet switched data wireless networks |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1934834A (en) * | 2004-02-06 | 2007-03-21 | 松下电器产业株式会社 | Communication handover method, communication message processing method, and program for executing these methods by use of computer |
| CN101103648A (en) * | 2005-01-13 | 2008-01-09 | 艾利森电话股份有限公司 | System and method for call handoff between circuit switched and packet switched data wireless networks |
| CN101087475A (en) * | 2006-08-21 | 2007-12-12 | 中兴通讯股份有限公司 | Switching method between evolved wireless system and traditional wireless system |
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