CN101483900A - Method for processing switching between heterogeneous systems - Google Patents
Method for processing switching between heterogeneous systems Download PDFInfo
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- CN101483900A CN101483900A CNA2008100651628A CN200810065162A CN101483900A CN 101483900 A CN101483900 A CN 101483900A CN A2008100651628 A CNA2008100651628 A CN A2008100651628A CN 200810065162 A CN200810065162 A CN 200810065162A CN 101483900 A CN101483900 A CN 101483900A
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Abstract
The invention discloses a method for treating switching among heterogeneous systems, which comprises that an MME receiving source base station sends a connection establishment request, and the request carries a pre-registration base station mark; the pre-registration base station receives the connection establishment request from the MME; and a transmission channel is established between the pre-registration base station and a target base station. The invention also discloses a base station and a system, which are used for treating the switching among the heterogeneous systems. By using the method, the device and the system provided by the invention, if the pre-registration base station is not the same as the target when in formal switching, the failure of switching among the heterogeneous systems can be avoided when a pre-registration switching is carried out.
Description
Technical field
The present invention relates to mobile communication system, relate in particular to a kind of method of switching between heterogeneous system of handling.
Background technology
At present, development of Communication Technique is maked rapid progress, and various new access technologies emerge in an endless stream.Because the pairing network of various access technologies has suitable separately coverage and application scenarios usually, therefore, in order to realize ubiquitous Communications service, supports the multimode terminal of multiple access technology to arise at the historic moment.To adopt the network of different access technologies to be called heterogeneous system.Support multiple access technology, also promptly support the multimode terminal of multiple heterogeneous system that a problem that must solve is arranged: how this multimode terminal carries out seamless switching and roaming between its these heterogeneous systems of supporting.
About the switching between heterogeneous system, it is to carry out pre-registration earlier before formal switch step that a kind of method is arranged at present, so-called pre-registration is exactly as terminal (Terminal Equipment, TE) also when former network, it can initiate registration to objective network by former network, can carry out processes such as access authentication, bearing resource reservation and security parameter configuration in advance.Promptly as TE also during base station at former network, with regard to a base station information of the good objective network of static configuration, this base station as the pre-registration base station.When pre-registration is carried out in the TE request, source base station just sends to mobile management entity (Mobile Management Entity to this target BS that configures, MME), MME can find the pre-registration base station according to this information, set up interface then, TE just can utilize this interface to carry out the pre-registration of objective network.When really switching, just carry out from source base station to the switching this pre-registration base station that configures.Be illustrated in figure 1 as the formal switching flow schematic diagram that carries out pre-registration earlier, this flow process comprises:
Step 100: original system carries out pre-registration;
Step 101:TE to former access network node (Access Network Node, AN), i.e. source base station sends measurement report;
Step 102: source base station carries out handover decisions according to measurement report;
Step 103: source base station sends to TE and is redirected indication;
Step 104:TE sends to source base station and connects the request of foundation;
Step 105: source base station sends to MME and connects the request of foundation, carries the pre-registration Base Station Identification in this request;
Step 106:MME sends to the pre-registration base station and connects the request of foundation;
Step 107: target access gateway is a pre-registration base station assigns transmission channel;
Step 108: the pre-registration base station sends switching command to MME, has comprised the transport channel parameters configuration information in this message;
Set up the data forwarding passage between step 109:MME and former IAD;
Step 110:MME sends redirect command to source base station, has comprised the transport channel parameters configuration information in this message;
Step 111: source base station is transmitted above-mentioned transport channel parameters configuration information to TE;
Step 111a: source base station sends to MME and switches indication;
Step 111b:MME sends to the pre-registration base station and switches indication;
Step 111c: set up user's face between pre-registration base station and the target access gateway;
Step 112: pre-registration base station and TE connect;
Step 113:TE sends transport channel parameters configure-ack message to the pre-registration base station;
Step 114a: the notice MME switching of pre-registration base station is finished;
Step 114b:MME sends to switch to the pre-registration base station and finishes response message;
The radio bearer of step 115:MME source of release base station.
The advantage of carrying out the switching of pre-registration is to have saved the most of the time for later formal switching, has very great help for improving quality of handoff.The target BS when but prior art is thought pre-registration base station and formal the switching is same base station.This hypothesis is invalid under some scene, the deployment scenario that depends on network, when the overlapping covering in the base station of the base station of former network and a plurality of goal systems, because can only dispose certain target BS in source base station is the pre-registration base station, TE carries out pre-registration from this pre-registration base station, because pre-registration needs bigger pre-set time, and moving of TE also is difficult to prediction, so might find when decision carry out to be switched that the target BS that TE at this time can insert has been not same base station with the pre-registration base station, this situation can cause handoff failure.
Summary of the invention
The purpose of this invention is to provide a kind of method of switching between heterogeneous system of handling, carry out in the formal handoff procedure behind the pre-registration, owing to target BS and pre-registration base station are not the problems that same base station causes handoff failure with solution.
In view of this, the invention provides a kind of method of switching between heterogeneous system of handling, this method comprises: request is set up in first connection that mobile management entity MME reception sources base station sends, and carries the sign of pre-registration base station in this request; Target BS is the terminal distribution Radio Resource; Described MME receives the transport channel configuration information that described target BS sends.
The present invention also provides a kind of base station of switching between heterogeneous system of handling, and this base station comprises Transmit-Receive Unit, is used to receive the connection foundation request that MME sends, and also is used for from the measurement report of MME receiving terminal, also is used for sending the handover decisions result to MME; Processing unit is used for carrying out handover decisions according to the measurement report that receives from MME, and sends the handover decisions result to Transmit-Receive Unit.
The present invention also provides a kind of system of switching between heterogeneous system that handles, and this system comprises terminal, is used for sending measurement report to source base station; Source base station is used for sending connection to MME and sets up request, carries the sign of pre-registration base station in this request; Also be used for transmitting the measurement report of terminal to MME; MME is used for sending connection to the pre-registration base station and sets up request, also is used for connecting the foundation request to the target BS transmission, also is used for transmitting to the pre-registration base station measurement report of terminal, also is used for the handover decisions result who sends to source base station forwarding pre-registration base station; The pre-registration base station is used for carrying out the forwarding of transmission channel configuration messages between MME and target BS, also be used for carrying out handover decisions according to the measurement report of the terminal that receives from MME, and send the handover decisions result to MME; And target BS, be used for receiving connection and set up request from MME, also be used to the terminal distribution Radio Resource.
A kind of method of switching between heterogeneous system of handling that the embodiment of the invention provides, base station and system make in the handoff procedure that carries out pre-registration, if no longer satisfy under the situation of switching condition the pre-registration base station when formally switching, system can select one to meet the target BS that switches requirement again, thereby switch normally, guarantee the continuity of service.
Description of drawings
Fig. 1 is the schematic flow sheet of prior art;
Fig. 2 is the schematic flow sheet of the embodiment of the invention one;
Fig. 3 is the schematic flow sheet of the embodiment of the invention two;
Fig. 4 is the schematic flow sheet of the embodiment of the invention three;
Embodiment
In formal switch step, source base station is received the measurement report of TE, if source base station determines to select the pre-registration base station to switch according to measurement report, source base station can be taked two kinds of measures: stop switching; Perhaps select in addition a new target BS in same system, information such as the QoS that will be consulted in pre-registration stage by the pre-registration base station, IP stream mode pass to the target BS of new selection again, come distributing radio resource by this target BS.
Particularly, second method is: source base station sends to MME to the information of the target BS of this new selection, MME triggers the contextual information transmission between target BS and the pre-registration base station, carry out the switching of goal systems inside, this process can have dual mode: 1) MME sends handoff request to the pre-registration base station, the index information that comprises the target BS of new selection in this request, can be selectedsectorID, be target BS sign, the information interaction between pre-registration base station triggers and the target BS then.2) MME sends the target BS of handoff request to new selection, then the information interaction between target BS initiation and the pre-registration base station.
For making goal of the invention, technical scheme and beneficial effect clearer, the specific embodiment of the present invention is elaborated below in conjunction with accompanying drawing.
Embodiment one
MME sends to the pre-registration base station and connects the request of foundation in the present embodiment, and information interaction is carried out with target BS again in the pre-registration base station, is illustrated in figure 2 as the schematic flow sheet of the embodiment of the invention one, and this flow process comprises:
Step 200-step 204 and prior art are basic identical, and just source base station is done handover decisions after receiving the measurement report to goal systems of TE, and decision switches to a new target BS, and the base station of this target BS and pre-registration is not same base station.
Step 205: source base station sends to MME and connects the request of foundation, carries pre-registration Base Station Identification (static sector ID) and the new target BS sign of selecting (selected sector ID) in this request;
Step 206:MME sends to the pre-registration base station and connects the request of foundation, carries the target BS sign of new selection in this message;
Step 207a: the pre-registration base station sends to target BS and connects the request of foundation, triggers the configuration that target BS is finished transport channel parameters, is the terminal distribution Radio Resource by target BS promptly;
The pre-registration base station may also can pass to target BS to the information in pre-registration stage and source base station negotiation in this step, and these information may comprise QoS information, IP flow state information, security parameter configuration information etc.If target BS and pre-registration base station do not belong to same IAD control, these information transmission also may occur in the IAD of controlled target base station and control between the IAD of pre-registration base station so.
Step 207b: target BS sends transport channel configuration information to the pre-registration base station;
Step 208-step 211a is identical with the step 108-step 111a of prior art;
Step 211b:MME indication pre-registration base station is carried out user's face and is switched, and can carry the target BS sign in this message;
Step 211c1: user's face is set up in indicating target base station, pre-registration base station;
Step 211c2: set up user's face between target BS and the affiliated IAD, this IAD may be different with IAD under the pre-registration base station;
Step 211c3: target BS sends user's face to the pre-registration base station and sets up response message, and this step is an optional step;
Step 211d-step 211g is identical with step 111d-step 111g of the prior art;
Step 212: target BS and TE connect;
Step 213:TE sends transmission channel configuration parameter acknowledge message to target BS;
Step 214: the notice MME switching of pre-registration base station is finished;
Step 214a: the base station switching of target BS notice pre-registration is finished;
Step 214b: the notice MME switching of pre-registration base station is finished;
Step 214c:MME sends to switch to the pre-registration base station and finishes acknowledge message;
Step 214d: the pre-registration base station sends to switch to target BS finishes acknowledge message;
Step 215-step 216 is identical with prior art step 115-step 116.
Source base station is after receiving the measurement report of TE in the present embodiment, reselect a target BS, and set up the information of carrying this target BS in the request to the connection that the pre-registration base station sends by MME, and the information interaction between pre-registration base station and the target BS, can avoid the handoff failure between heterogeneous system so that no longer meet under the situation of switching requirement in the pre-registration base station.
Embodiment two
MME sends to target BS and connects the request of foundation in the present embodiment, and target BS carries out information interaction with the pre-registration base station again, is illustrated in figure 3 as the schematic flow sheet of the embodiment of the invention two, and this flow process comprises:
Step 300-step 304 is identical with step 100-step 104 of the prior art, just source base station is made handover decisions after receiving the measurement report to objective network of TE, decision switches to another target BS, and this target BS and pre-registration base station are not same base stations.
Step 305: source base station sends to MME and connects the request of foundation, carries pre-registration Base Station Identification (static sector ID) and the new target BS sign of selecting (selected sector ID) in this request;
The target BS that step 306:MME sets up in the request according to above-mentioned connection identifies, and sends to target BS to connect the request of foundation, carries pre-registration Base Station Identification (static sector ID) in this request;
Step 307: target BS is the terminal distribution Radio Resource, finishes the configuration of transport channel parameters;
Target BS may need to initiate information interaction to the pre-registration base station in this step, obtain some information from the pre-registration base station, the QoS information that pre-registration base station and source base station consulted before these information may comprise, IP flow state information, security parameter configuration information etc.If handover-target base station and pre-registration base station do not belong to same IAD control, these information transmission also may occur in the IAD of controlled target base station and control between the IAD of pre-registration base station so.
Step 308: target BS sends transport channel configuration information to MME;
Step 309-step 311a is identical with the step 109-step 111a of prior art;
Step 311c-step 311g is identical with the step 111c-step 111g of prior art;
Step 312: connect between target BS and TE;
Step 313:TE sends transport channel configuration information to target BS and confirms;
Step 314a: target BS notice MME switching is finished;
Step 314b:MME sends to switch to target BS and finishes response message;
Step 315-step 316 is identical with the step 115-step 116 of prior art.
Source base station is after receiving the measurement report of TE in the present embodiment, reselect a target BS, and information by carrying target BS in the connection foundation request that sends to MME, make target BS when MME can find formal switch, and by the information interaction between pre-registration base station and the target BS, make no longer to meet under the situation of switching requirement, avoid the handoff failure between heterogeneous system in the pre-registration base station.
Embodiment three
Be illustrated in figure 4 as the schematic flow sheet of alternate embodiment of the present invention, in the present embodiment, the pre-registration base station no longer meets the switching requirement of TE, selects a new target BS by the pre-registration base station according to the measurement report of TE, and this flow process comprises:
Step 400-step 403 is identical with step 100-step 103 in the prior art;
Step 404:TE sends to source base station and connects the request of foundation, carries the measurement report of goal systems in this request;
Step 405: source base station sends to MME and connects the request of foundation, carries the measurement report of goal systems in this request;
Step 406:MME sends to the pre-registration base station and connects the request of foundation, carries the measurement report of goal systems in this request;
Step 407a-step 416 is identical with the step 207a-step 216 of embodiment one.
TE is setting up the measurement report that carries goal systems in the request by source base station, MME to the connection that the pre-registration base station sends in the embodiment of the invention, oneself no longer met handoff request by the judgement of pre-registration base station, and carry out handover decisions, make the pre-registration base station to make decision in real time according to the measurement report of TE, promptly select a new target BS, thereby make no longer to meet under the situation of switching requirement, avoid the handoff failure between heterogeneous system in the pre-registration base station.
Embodiment four
The embodiment of the invention also provides a kind of base station, comprises processing unit and Transmit-Receive Unit, when it during as the pre-registration base station,
Transmit-Receive Unit, be used to receive the connection foundation request that MME sends, also be used for from the measurement report of MME receiving terminal, also be used for sending the handover decisions result to MME, also be used for sending the information that pre-registration stage is consulted to target BS, this information can comprise QoS information, IP flow state information, security parameter configuration information etc.
Processing unit is used for carrying out handover decisions according to the measurement report that receives from MME, and sends the handover decisions result to Transmit-Receive Unit.
The embodiment of the invention also provides a kind of system, is used for the switching between heterogeneous system, and this system comprises: terminal, source base station, MME, pre-registration base station and target BS, wherein,
Terminal: be used for sending measurement report to source base station.
Source base station: be used for sending connection and set up request, the sign of carrying target BS in this request to MME; Also be used for transmitting the measurement report that terminal sends to MME.
MME: be used for sending connection and set up request to the pre-registration base station, carry the sign of target BS in this request, also be used for sending connection and set up request to target BS, also be used for transmitting the measurement report that terminal sends, also be used for transmitting the handover decisions result that the pre-registration base station sends to source base station to the pre-registration base station.
Pre-registration base station: be used to trigger the configuration that target BS is finished transport channel parameters, the QoS information that also is used for before target BS sends the pre-registration base station, consulting, IP flow state information, security parameter configuration information etc. at pre-registration process and source base station, also be used for carrying out handover decisions, and send the handover decisions result to MME according to the measurement report of the terminal that receives from MME.
Target BS: be used for receiving connection foundation request, also be used to carry out the configuration of transport channel parameters from MME or pre-registration base station.
More than be to a kind of detailed introduction of handling the method for switching between heterogeneous system provided by the present invention, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1, a kind of method of switching between heterogeneous system of handling is characterized in that this method comprises:
Request is set up in first connection that mobile management entity MME reception sources base station sends, and carries the sign of pre-registration base station in this request;
Target BS is the terminal distribution Radio Resource, sends transport channel configuration information;
Described MME receives described transport channel configuration information;
Described MME sends described transport channel configuration information to terminal;
Described terminal and described target BS connect.
2, the method for claim 1 is characterized in that, described target BS is that the terminal distribution Radio Resource also comprises before:
Described MME sends second to described pre-registration base station and connects the request of foundation;
Described pre-registration base station sends the 3rd to described target BS and connects the request of foundation.
3, method as claimed in claim 2 is characterized in that, described MME receives first connection request of setting up and also comprises before:
The measurement report select target base station that source base station sends according to terminal;
Then described first connects the sign of also carrying described target BS in the request of foundation;
Described second connects the sign of also carrying described target BS in the request of foundation.
4, method as claimed in claim 2 is characterized in that, described MME receives first connection request of setting up and also comprises before:
Described pre-registration base station receives the measurement report of the terminal of described source base station and described MME forwarding;
Handover decisions is carried out according to described measurement report in described pre-registration base station, selects the target BS that switches;
Described pre-registration base station sends the handover decisions result by MME to described source base station.
5, as any described method of claim in the claim 1, it is characterized in that described MME receives described transport channel configuration information and is specially:
Described target BS sends described transport channel configuration information to described pre-registration base station;
Described MME receives the described transport channel configuration information that described pre-registration base station sends.
6, the method for claim 1 is characterized in that, described target BS is that the terminal distribution Radio Resource also comprises before:
Described MME sends the 4th to described target BS and connects the request of foundation, carries the sign of described pre-registration base station in this request.
7, method as claimed in claim 6 is characterized in that, described MME receives first connection request of setting up and also comprises before:
The measurement report select target base station that source base station sends according to terminal;
Then described first connects the sign of also carrying described target BS in the request of foundation.
8, as any described method of claim among the claim 1-7, it is characterized in that this method also comprises: described pre-registration base station sends the information that pre-registration stage is consulted to described target BS.
9, a kind of base station of switching between heterogeneous system of handling is characterized in that this base station comprises processing unit and Transmit-Receive Unit, when this base station during as the pre-registration base station,
Transmit-Receive Unit is used to receive the connection foundation request that MME sends, and also is used for from the measurement report of MME receiving terminal, also is used for sending the handover decisions result to MME;
Processing unit is used for carrying out handover decisions according to the measurement report that receives from MME, and sends the handover decisions result to Transmit-Receive Unit.
10, base station as claimed in claim 9 is characterized in that, described Transmit-Receive Unit also is used for sending the information that pre-registration stage is consulted to target BS.
11, a kind of system of switching between heterogeneous system that handles is characterized in that, this system comprises terminal, source base station, MME, pre-registration base station and target BS, wherein,
Terminal is used for sending measurement report to source base station;
Source base station is used for sending connection to MME and sets up request, carries the sign of pre-registration base station in this request; Also be used for transmitting the measurement report of terminal to MME;
MME is used for sending connection to the pre-registration base station and sets up request, also is used for connecting the foundation request to the target BS transmission, also is used for transmitting to the pre-registration base station measurement report of terminal, also is used for the handover decisions result who sends to source base station forwarding pre-registration base station;
The pre-registration base station is used for carrying out the forwarding of transmission channel configuration messages between MME and target BS, also be used for carrying out handover decisions according to the measurement report of the terminal that receives from MME, and send the handover decisions result to MME;
Target BS is used for receiving connection foundation request from described MME or described pre-registration base station, also is used to the terminal distribution Radio Resource.
12, system as claimed in claim 11 is characterized in that, described pre-registration base station also is used for sending the information that pre-registration stage is consulted to described target BS.
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| CNA2008100651628A CN101483900A (en) | 2008-01-07 | 2008-01-07 | Method for processing switching between heterogeneous systems |
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| CNA2008100651628A CN101483900A (en) | 2008-01-07 | 2008-01-07 | Method for processing switching between heterogeneous systems |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011123983A1 (en) * | 2010-04-07 | 2011-10-13 | 上海贝尔股份有限公司 | Base station, mobile station and method in wireless hetnet |
| CN103024831A (en) * | 2012-12-03 | 2013-04-03 | 北京理工大学 | Heterogeneous network base station triggered switching method based on common control carrier (CCC) frame |
| WO2014015527A1 (en) * | 2012-07-27 | 2014-01-30 | 华为技术有限公司 | Method, apparatus and system for acquiring pre-registration information |
| WO2014082282A1 (en) * | 2012-11-30 | 2014-06-05 | Nokia Corporation | Method and apparatus for handover in heterogeneous system |
| WO2018126461A1 (en) * | 2017-01-06 | 2018-07-12 | 华为技术有限公司 | Network switching method and related equipment |
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2008
- 2008-01-07 CN CNA2008100651628A patent/CN101483900A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011123983A1 (en) * | 2010-04-07 | 2011-10-13 | 上海贝尔股份有限公司 | Base station, mobile station and method in wireless hetnet |
| CN102726102A (en) * | 2010-04-07 | 2012-10-10 | 上海贝尔股份有限公司 | Base station, mobile station and method in wireless hetnet |
| CN102726102B (en) * | 2010-04-07 | 2016-05-18 | 上海贝尔股份有限公司 | Base station, travelling carriage and method in Wireless Heterogeneous Networks |
| WO2014015527A1 (en) * | 2012-07-27 | 2014-01-30 | 华为技术有限公司 | Method, apparatus and system for acquiring pre-registration information |
| CN103703836A (en) * | 2012-07-27 | 2014-04-02 | 华为技术有限公司 | Method, apparatus and system for acquiring pre-registration information |
| WO2014082282A1 (en) * | 2012-11-30 | 2014-06-05 | Nokia Corporation | Method and apparatus for handover in heterogeneous system |
| US9420501B2 (en) | 2012-11-30 | 2016-08-16 | Nokia Technologies Oy | Method and apparatus for handover in heterogeneous system |
| CN103024831A (en) * | 2012-12-03 | 2013-04-03 | 北京理工大学 | Heterogeneous network base station triggered switching method based on common control carrier (CCC) frame |
| CN103024831B (en) * | 2012-12-03 | 2015-05-20 | 北京理工大学 | Heterogeneous network base station triggered switching method based on common control carrier (CCC) frame |
| WO2018126461A1 (en) * | 2017-01-06 | 2018-07-12 | 华为技术有限公司 | Network switching method and related equipment |
| US10911990B2 (en) | 2017-01-06 | 2021-02-02 | Huawei Technologies Co., Ltd. | Network handover method and related device |
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