CN102892098A - Updating method, device and system of relay node contextual information - Google Patents
Updating method, device and system of relay node contextual information Download PDFInfo
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- CN102892098A CN102892098A CN2011102072388A CN201110207238A CN102892098A CN 102892098 A CN102892098 A CN 102892098A CN 2011102072388 A CN2011102072388 A CN 2011102072388A CN 201110207238 A CN201110207238 A CN 201110207238A CN 102892098 A CN102892098 A CN 102892098A
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Abstract
The invention discloses an updating method of relay node contextual information. The updating method comprises the steps that after a supplier base station DeNB determines that a mobile management unit switched in by an RN (relay node) of UE (user equipment) is invalid or is restarted, the contextual information of the RN is sent to the mobile management unit reselected for the RN or the mobile management unit after being restarted. The invention also discloses an updating device and an updating system of the contextual information of the relay node for achieving the method. According to the invention, the RN is switched into the system as far as possible, thus the RN enabled by the UE and the UE service switching rapidity for switching in the RN are ensured, the service quality of the communication system is ensured, and when an MME (mobility management entity) is invalid or is restarted, the influences to the switched users are reduced as far as possible.
Description
Technical field
The present invention relates to the renewal technology of via node (RN, Relay Node) contextual information, relate in particular to a kind of update method, Apparatus and system of via node contextual information.
Background technology
In order to keep 3-G (Generation Three mobile communication system) in the competitiveness of the communications field, third generation partner program (3GPP, 3rd Generation Partnership Project) the standard operation group just is being devoted to the research of evolution grouping domain system (EPS, Evolved Packet System).Fig. 1 is the system construction drawing of evolution packet network, as shown in Figure 1, the EPS system mainly comprises the universal terrestrial access network (E-UTRAN of evolution, Evolved Universal Terrestrial Radio Access Network) and packet-based core networks (EPC, Evolved Packet Core) two parts of evolution.The EPC of this system can support the user from GSM EDGE wireless access network (GERAN, GSM EDGE radio access network) and the access of universal land radio access web (UTRAN, Universal Terrestrial Radio Access Network).
In the EPC packet-based core networks, comprised home subscriber data server (HSS, Home Subscriber Server), mobility management unit (MME, Mobility Management Entity), gateway (SGW, Serving Gateway), grouped data network gateway (PGW, PDN Gateway), general packet radio service (GPRS, General Packet Radio Service) and the strategy and charging regulation function entity (PCRF, Policy and Charging Enforcement Function), wherein:
Home subscriber server (HSS, Home Subscriber Server) is the permanent storage place of user contracting data, is positioned at the home network that the user contracts;
Mobility Management Entity, be user contracting data at the storage place of current network, be responsible for Non-Access Stratum (NAS, the Non-Access Stratum) signaling management of terminal to network, tracking and paging management function and the bearer management under user's idle pulley;
Gateway is the gateway that core net arrives wireless system, is responsible for terminal to the user plane bearer of core net, the data buffer storage under the terminal idle pulley, the function of network side initiating business request, legal eavesdropping and packet routing and forwarding capability;
Packet data network gateway is the functions such as the grouping domain system of evolution and the gateway of this system's external network, the IP address assignment of responsible terminal, billing function, grouping packet filtering, application of policies.
Serving GPRS Support Node is the business support point that GERAN and UTRAN user access the EPC network, and is similar with MME on the function, is responsible for user's the functions such as position renewal, paging management and bearer management.
Strategy and charging regulation function entity are responsible for providing policy control and charging regulation to PCEF.
Under some scene, in order to enlarge wireless coverage, the perhaps wireless ability that access user is provided of provisional increase has been introduced the concept of relaying (Relay) node.Fig. 2 is for introducing Relay network architecture schematic diagram afterwards, and as shown in Figure 2, after having introduced via node, UE can carry out network insertion by via node, wherein:
Via node (RN, Relay Node) comprises two parts function, is respectively UE and via node.RN sets up the associative operations such as carrying on the one hand as the UE access network, provides access as eNodeB for UE on the other hand.In this specification, will be called RN-UE as UERN.
Donor base station (DeNB, Donor eNodeB), for RN provides wireless access, the Radio Resource of the RN-UE that terminated control (RRC, Radio Resource Control) signaling terminates in S1 Application Protocol (S1AP) signaling and the X2 signaling of DeNB.SGW and the PGW of built-in RN-UE of while.
When RN accesses as UE, MME and the eNodeB that service is provided for RN-UE needed to have corresponding enhancing function, need therefore to guarantee that RN can choose eNodeB and the MME (being called RN-MME in this specification) of enhancing.In real network was used, MME may be because system be unstable or upgrading causes restarting, and when restarting appearred in MME, MME need to notify corresponding connected eNodeB, so that the timely releasing resource of eNodeB.Fig. 3 is the flow chart that MME is restarted rear notice eNodeB, as shown in Figure 3, after introducing RN, DeNB in the network, because RN is connected with MME by DeNB, therefore when RN-MME was restarted, RN-MME notice DeNB self was restarted, and DeNB discharges while RN with RN also can allow the UE of this RN of access discharge, this will exert an influence to the UE of access RN, thereby affects UE user's experience.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of update method, Apparatus and system of via node contextual information, can be when definite MME loses efficacy or restarted, it is the MME that newly determines of RN or the MME of having restarted that the contextual information of the RN that DeNB will enable as UE is transmitted to, thereby guarantees the agility of the RN that enables as UE and the UE service access that accesses this RN.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of update method of via node contextual information comprises:
After DeNB determines that the mobile management unit as the via node RN access of user equipment (UE) lost efficacy or restarts, send to as the mobile management unit of described RN gravity treatment the contextual information of described RN or the mobile management unit after restarting.
Preferably, described method also comprises:
When described mobile management unit determines that the contextual information of received described RN lacks information, upgrade the contextual information of described RN by HSS.
Preferably, described method also comprises:
Described mobile management unit carries out authentication according to the contextual information of described RN to described RN.
Preferably, described method also comprises:
Described mobile management unit is that described RN distributes casual user's sign.
Preferably, described mobile management unit is MME.
A kind of updating device of via node contextual information, described device comprises determining unit and transmitting element, wherein:
Determining unit be used for to be determined that mobile management unit as the RN access of UE lost efficacy or when restarting, is triggered transmitting element;
Transmitting element is used for contextual information with described RN and sends to as the mobile management unit of described RN gravity treatment or the mobile management unit after restarting.
Preferably, described mobile management unit is MME.
A kind of update system of via node contextual information comprises DeNB, RN and mobile management unit, wherein,
DeNB, be used for to determine that mobile management unit as the RN access of UE lost efficacy or restarts after, send to as the mobile management unit of described RN gravity treatment the contextual information of described RN or the mobile management unit after restarting.
Preferably, described mobile management unit is further used for, and when the contextual information of determining received described RN lacks information, upgrades the contextual information of described RN by HSS.
Preferably, described mobile management unit is further used for, and according to the contextual information of described RN the RN as the UE access is carried out authentication.
Preferably, described mobile management unit is further used for, for described RN distributes casual user's sign.
Preferably, described mobile management unit is MME.
Among the present invention, when definite MME lost efficacy or restarted, it is the MME that newly determines of RN or the MME of having restarted that the contextual information of the RN that DeNB will enable as UE is transmitted to, like this, new selected MME or restart after MME can be according to the contextual information of RN, make as quickly as possible this RN be linked into system, thereby guarantee the agility of the RN that enables as UE and the UE service access that accesses this RN, guaranteed the QoS of communication system, when MME lost efficacy or restarted, make the impact that access user is caused as much as possible little.
Description of drawings
Fig. 1 is the system construction drawing of evolution packet network;
Fig. 2 is for introducing Relay network architecture schematic diagram afterwards;
Fig. 3 is the flow chart that MME is restarted rear notice eNodeB;
Fig. 4 is the method flow diagram that mobile management unit of the present invention is restarted rear transmission RN-UE user's context;
Fig. 5 is another flow chart that mobile management unit of the present invention is restarted the method for rear transmission RN-UE user's context;
Fig. 6 is the composition structural representation of the updating device of via node contextual information of the present invention.
Embodiment
Basic thought of the present invention is: when definite MME lost efficacy or restarted, it is the MME that newly determines of RN or the MME of having restarted that the contextual information of the RN that DeNB will enable as UE is transmitted to, like this, new selected MME or restart after MME can according to the contextual information of RN, make as quickly as possible this RN be linked into system.
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 4 is the method flow diagram that mobile management unit of the present invention is restarted rear transmission RN-UE user's context, and as shown in Figure 4, the method that the mobile management unit of RN is restarted rear transmission RN-UE user's context among the present invention mainly may further comprise the steps:
Among the present invention, RN-MME also may be unavailable for a certain reason, such as DeNB set fail to receive the response message of RN-MME in the period or determine and RN-MME between physical link when opening circuit etc., also can for selected other the MME of RN-UE as RN-MME, and the RN-UE contextual information passed to this selected RN-MME.
Below in conjunction with Fig. 5, RN-MME of the present invention is restarted rear DeNB describe to the concrete mode that RN-MME transmits the RN-UE user's context.
Fig. 5 is another flow chart that mobile management unit of the present invention is restarted the method for rear transmission RN-UE user's context, and as shown in Figure 5, RN-MME is restarted rear DeNB and mainly be may further comprise the steps to the method that RN-MME transmits the RN-UE user's context:
Step 501, after RN-MME was restarted, RN-MME sends to connected DeNB restarted message;
Step 502, DeNB returns restart ack message to RN-MME;
Step 503, DeNB is confirmed to be RN-MME restart after, for RN reselects a RN-MME and sends UE context transfer request message to selected RN-MME, perhaps directly send UE context transfer request message to this RN-MME of having restarted, described UE context request message comprises the user ID of RN, beared information and relevant tracking area, described UE context can also comprise the UE context of the RN of a plurality of access RN-MME, also can be many concurrent;
Step 504, RN-MME finds that described UE contextual information is not complete, when lacking the information such as authentication vector, then sends location update request message to HSS;
Step 505, HSS replys the position to RN-MME and upgrades acknowledge message; Carry contracted user's data of RN in the message;
If HSS finds that the RN-MME sign of preserving is different from the RN-MME sign of the message of request position renewal, then send the canceling position request message to former RN-MME (RN-MME of namely restarting), former RN-MME directly replys the canceling position acknowledge message to HSS.
Step 506, RN-MME carries out the authentication process to RN;
Step 507 after RN-MME is successful to the RN authentication, is replied UE context transfer acknowledge message to DeNB.
Step 508, RN-MME is that RN distributes casual user's sign.
It will be appreciated by those skilled in the art that if DeNB determines above-mentioned RN-MME to lose efficacy when being unavailable, also can for selected other the MME of RN-UE as RN-MME, and the contextual information of RN-UE sent to this selected RN-MME.The mode that sends and Fig. 4 and method shown in Figure 5 are identical, repeat no more its transmission flow here.
Fig. 6 is the composition structural representation of the updating device of via node contextual information of the present invention, as shown in Figure 6, and the updating device determining unit 60 of via node contextual information of the present invention and transmitting element 61, wherein:
Determining unit 60 be used for to be determined that mobile management unit as the RN access of UE lost efficacy or when restarting, is triggered transmitting element;
Transmitting element 61 is used for sending to as the contextual information of the RN of UE for the mobile management unit of described RN gravity treatment or the mobile management unit after restarting.
Above-mentioned mobile management unit is MME.
The function that it will be appreciated by those skilled in the art that the processing unit that relates in the updating device of above-mentioned via node contextual information can be passed through hardware circuit, or carries out corresponding software by processor and realized.The function of above-mentioned each processing unit can be in conjunction with the associated description of the update method of aforementioned via node contextual information and understand.
The present invention has also put down in writing a kind of update system of via node contextual information, comprises DeNB, RN and mobile management unit, wherein,
DeNB, be used for to determine that mobile management unit as the RN access of UE lost efficacy or restarts after, send to as the mobile management unit of described RN gravity treatment the contextual information of described RN or the mobile management unit after restarting.
Above-mentioned mobile management unit is further used for, and when the contextual information of determining received described RN lacks information, upgrades the contextual information of described RN by HSS.
Above-mentioned mobile management unit is further used for, and according to the contextual information of described RN the RN as the UE access is carried out authentication.
Above-mentioned mobile management unit is further used for, for described RN distributes casual user's sign.
Above-mentioned mobile management unit is MME.
It will be appreciated by those skilled in the art that the present invention there is no change to existing network architecture, therefore, related network elements and structure thereof can be understood referring to aforementioned system architecture shown in Figure 2.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.
Claims (12)
1. the update method of a via node contextual information is characterized in that, described method comprises:
After donor base station DeNB determines that the mobile management unit as the via node RN access of user equipment (UE) lost efficacy or restarts, send to as the mobile management unit of described RN gravity treatment the contextual information of described RN or the mobile management unit after restarting.
2. method according to claim 1 is characterized in that, described method also comprises:
When described mobile management unit determines that the contextual information of received described RN lacks information, upgrade the contextual information of described RN by home subscriber server HSS.
3. method according to claim 1 is characterized in that, described method also comprises:
Described mobile management unit carries out authentication according to the contextual information of described RN to described RN.
4. each described method in 3 according to claim 1 is characterized in that described method also comprises:
Described mobile management unit is that described RN distributes casual user's sign.
5. method according to claim 4 is characterized in that, described mobile management unit is Mobility Management Entity MME.
6. the updating device of a via node contextual information is characterized in that, described device comprises determining unit and transmitting element, wherein:
Determining unit be used for to be determined that mobile management unit as the RN access of UE lost efficacy or when restarting, is triggered transmitting element;
Transmitting element is used for contextual information with described RN and sends to as the mobile management unit of described RN gravity treatment or the mobile management unit after restarting.
7. device according to claim 6 is characterized in that, described mobile management unit is MME.
8. the update system of a via node contextual information comprises DeNB, RN and mobile management unit, it is characterized in that,
DeNB, be used for to determine that mobile management unit as the RN access of UE lost efficacy or restarts after, send to as the mobile management unit of described RN gravity treatment the contextual information of described RN or the mobile management unit after restarting.
9. system according to claim 8 is characterized in that,
Described mobile management unit is further used for, and when the contextual information of determining received described RN lacks information, upgrades the contextual information of described RN by HSS.
10. system according to claim 8 is characterized in that,
Described mobile management unit is further used for, and according to the contextual information of described RN the RN as the UE access is carried out authentication.
11. each described system in 10 is characterized in that according to claim 8,
Described mobile management unit is further used for, for described RN distributes casual user's sign.
12. system according to claim 11 is characterized in that, described mobile management unit is MME.
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| CN201110207238.8A CN102892098B (en) | 2011-07-22 | 2011-07-22 | The update method of relay node contextual information, apparatus and system |
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| CN111510968A (en) * | 2014-06-17 | 2020-08-07 | 华为技术有限公司 | MME reselection method and MME |
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