CN102892098B - The update method of relay node contextual information, apparatus and system - Google Patents
The update method of relay node contextual information, apparatus and system Download PDFInfo
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- CN102892098B CN102892098B CN201110207238.8A CN201110207238A CN102892098B CN 102892098 B CN102892098 B CN 102892098B CN 201110207238 A CN201110207238 A CN 201110207238A CN 102892098 B CN102892098 B CN 102892098B
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Abstract
The invention discloses a kind of update method of relay node contextual information, including：Donor base station DeNB is determined as the mobile management unit failure of the via node RN accesses of user equipment (UE) or after restarting, and the contextual information of the RN is sent to as the mobile management unit of the RN gravity treatments or the mobile management unit after restarting.The present invention discloses a kind of updating device and system of the relay node contextual information for realizing the above method.The present invention can make the RN be linked into system as quickly as possible, so as to ensure the agility as the UE RN enabled and the UE service accesses for accessing the RN, the QoS of communication system is ensure that, is failed in MME or when restarting, makes to influence to caused by accessing user small as much as possible.
Description
Technical field
The present invention relates to the update method of via node (RN, Relay Node) contextual information, more particularly in one kind
Update method, apparatus and system after node context 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) standard working group be just directed to evolution grouping domain system (EPS,
Evolved Packet System) research.Fig. 1 is the system construction drawing of evolution packet network, as shown in figure 1, EPS
Main universal terrestrial access network (E-UTRAN, Evolved the Universal Terrestrial for including evolution
Radio Access Network) and evolution packet-based core networks (EPC, Evolved Packet Core) two parts.The system
EPC user can be supported from GSM EDGE wireless access networks (GERAN, GSM EDGE radio access network) and
The access of universal land radio access web (UTRAN, Universal Terrestrial Radio Access Network).
In EPC packet-based core networks, home subscriber data server (HSS, Home Subscriber is contained
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 strategy and charging regulation function entity (PCRF, Policy and Charging
Enforcement Function), wherein：
Home subscriber server (HSS, Home Subscriber Server), it is the permanent storing place of user contracting data
Point, positioned at the home network of user's signing；
Mobility management entity, it is storage place of the user contracting data in current network, is responsible for the non-of terminal to network
Access Layer (NAS, Non-Access Stratum) signaling management, the tracking under user's idle pulley and paging and are held at management function
Carry management；
Gateway, it is gateway of the core net to wireless system, user plane bearer, the terminal for being responsible for terminal to core net are empty
Function, lawful interception and the packet routing and forwarding capability of data buffer storage, network side initiating business request under not busy pattern；
Packet data network gateway, it is the grouping domain system of evolution and the gateway of its exterior network, is responsible for the IP of terminal
The functions such as address distribution, billing function, packet packet filtering, strategy application.
Serving GPRS Support Node, be GERAN and UTRAN users access EPC networks business support point, functionally with
MME is similar, is responsible for the functions such as location updating, paging management and the bearer management of user.
Strategy and charging regulation function entity, it is responsible for providing policy control and charging regulation to PCEF.
In some scenarios, in order to expand wireless coverage, or provisional increase wirelessly provides the energy of accessing user
Power, introduce the concept of relaying (Relay) node.Fig. 2 is the network architecture schematic diagram introduced after Relay, as shown in Fig. 2
After via node is introduced, UE can carry out network insertion by via node, wherein：
Via node (RN, Relay Node), it is UE and via node respectively comprising two parts function.On the one hand RN makees
Network is accessed for UE, the associative operations such as carrying is established, on the other hand provides access as eNodeB for UE., will in this specification
It is referred to as RN-UE as UERN.
Donor base station (DeNB, Donor eNodeB), provides wireless access, the Radio Resource for the RN-UE that terminated for RN
(RRC, Radio Resource Control) signaling is controlled, terminates in DeNB S1 Application Protocol (S1AP) signaling and X2 letters
Order.Built-in RN-UE SGW and PGW simultaneously.
When RN accesses as UE, the MME and eNodeB that service is provided for RN-UE are required for strengthening work(accordingly
Can, it is therefore desirable to ensure that RN can choose the eNodeB and MME (being referred to as RN-MME in this specification) of enhancing.In real network
In, MME may or upgrading unstable due to system cause to restart, when MME is restarted, MME needs to notify corresponding
Connected eNodeB, so that eNodeB can discharge resource in time.Fig. 3 is to notify eNodeB's after MME is restarted
Flow chart, as shown in figure 3, after RN, DeNB is introduced in network, because RN be connected by DeNB with MME, therefore work as RN-MME hairs
When life is restarted, RN-MME notices DeNB itself has been restarted, and by RN releases, RN can also allow the UE for accessing the RN to release to DeNB simultaneously
Put, this will have an impact to the UE for accessing RN, so as to influence the experience of UE user.
The content of the invention
In view of this, it is a primary object of the present invention to provide a kind of update method of relay node contextual information, dress
Put and system, can it is determined that MME failures or when restarting, DeNB using the RN enabled as UE contextual information be transmitted to for RN it is new
The MME of the determination or MME restarted, so as to ensure as UE enable RN and access the RN UE service accesses it is quick
Property.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of update method of relay node contextual information, including：
After DeNB is determined as the mobile management unit failure of the via node RN accesses of user equipment (UE) or restarted, by institute
The contextual information for stating RN is sent to as the mobile management unit of the RN gravity treatments or the mobile management unit after restarting.
Preferably, methods described also includes：
When the mobile management unit determines that received RN contextual information lacks information, by HSS more
New RN contextual information.
Preferably, methods described also includes：
The mobile management unit carries out authentication according to the contextual information of the RN to the RN.
Preferably, methods described also includes：
The mobile management unit is that the RN distributes interim subscriber identity.
Preferably, the mobile management unit is MME.
A kind of updating device of relay node contextual information, described device include determining unit and transmitting element, wherein：
Determining unit, when the mobile management unit that the RN for being determined as UE is accessed fails or restarted, triggering sends single
Member；
Transmitting element, for the contextual information of the RN to be sent to the mobile management unit or again for the RN gravity treatments
Mobile management unit after opening.
Preferably, the mobile management unit is MME.
A kind of more new system of relay node contextual information, including DeNB, RN and mobile management unit, wherein,
DeNB, after the mobile management unit that the RN for being determined as UE is accessed fails or restarted, by above and below the RN
Literary information is sent to as the mobile management unit of the RN gravity treatments or the mobile management unit after restarting.
Preferably, the mobile management unit is further used for, it is determined that received RN contextual information lacks
During few information, the contextual information of the RN is updated by HSS.
Preferably, the mobile management unit is further used for, according to the contextual information of the RN to being accessed as UE
RN carry out authentication.
Preferably, the mobile management unit is further used for, and interim subscriber identity is distributed for the RN.
Preferably, the mobile management unit is MME.
In the present invention, when it is determined that MME fails or restarted, the RN enabled as UE contextual information is transmitted to by DeNB
For the RN MME newly determined or the MME restarted, so, newly selected MME or the MME after restarting can believe according to RN context
Breath, makes the RN be linked into system as quickly as possible, so as to ensure as the UE RN enabled and the UE service accesses for accessing the RN
Agility, ensure that the QoS of communication system, failed in MME or when restarting, make the shadow to caused by accessing user
Sound is small as much as possible.
Brief description of the drawings
Fig. 1 is the system construction drawing of evolution packet network；
Fig. 2 is the network architecture schematic diagram introduced after Relay；
Fig. 3 is the flow chart that eNodeB is notified after MME is restarted；
Fig. 4 is the method flow diagram that RN-UE user's contexts are transmitted after mobile management unit of the present invention is restarted；
Fig. 5 is another flow chart for the method that RN-UE user's contexts are transmitted after mobile management unit of the present invention is restarted；
Fig. 6 is the composition structural representation of the updating device of relay node contextual information of the present invention.
Embodiment
The present invention basic thought be：It is determined that MME failures or when restarting, DeNB is using the RN enabled as UE context
Information is transmitted to as the RN MME newly determined or the MME restarted, and so, newly selected MME or MME after restarting can be according to RN
Contextual information, the RN is linked into system as quickly as possible.
It is by the following examples and referring to the drawings, right for the object, technical solutions and advantages of the present invention are more clearly understood
The present invention is further described.
Fig. 4 is the method flow diagram that RN-UE user's contexts are transmitted after mobile management unit of the present invention is restarted, such as Fig. 4 institutes
Show, the method that RN-UE user's contexts are transmitted after RN mobile management unit is restarted in the present invention mainly includes the following steps that：
Step 401, after RN-MME is restarted, DeNB is notified；
Step 402, it is RN gravity treatments one that the RN-UE contextual informations in DeNB are passed to RN-MME or DeNB by DeNB
The data that RN-MME, RN-MME carry out RN-UE to HSS update, and carry out authentication to RN-UE, redistribute and face for RN-UE
When user identify.
In the present invention, RN-MME may also be unavailable for some reason, such as DeNB fails to receive within the setting period
To during the physical link open circuit between RN-MME response message or determination and RN-MME etc., or RN-UE is selected one
Other MME pass to the selected RN-MME as RN-MME, and by RN-UE contextual informations.
Below in conjunction with Fig. 5, rear DeNB is restarted to RN-MME of the present invention and transmits the specific of RN-UE user's contexts to RN-MME
Mode illustrates.
Fig. 5 is another flow chart for the method that RN-UE user's contexts are transmitted after mobile management unit of the present invention is restarted, such as
Shown in Fig. 5, the method that RN-MME restarts rear DeNB to RN-MME transmission RN-UE user's contexts mainly includes the following steps that：
Step 501, after RN-MME is restarted, RN-MME is sent to connected DeNB restarts message；
Step 502, DeNB returns to RN-MME restarts confirmation message；
Step 503, DeNB confirms it is to reselect a RN-MME and to selected RN- for RN after RN-MME is restarted
MME sends UE context transfer request messages, or directly sends the request of UE context transfers to the RN-MME restarted and disappear
Breath, the user that the UE context request messages include RN identify, the tracking area of carrying information and correlation, the UE contexts
Can also comprising multiple access RN-MME RN UE contexts or it is a plurality of concurrently；
Step 504, RN-MME has found that the UE contextual informations are not complete, for example lacks the information such as authentication vector
When, then send location update request message to HSS；
Step 505, HSS replys location updating confirmation message to RN-MME；RN contracted user's data are carried in message；
If the RN-MME marks of message of the RN-MME marks that HSS has found to preserve from asking location updating are different, to
Former RN-MME (RN-MME restarted) sends canceling position request message, and it is true that former RN-MME directly replys canceling position to HSS
Recognize message.
Step 506, RN-MME carries out authentication process to RN；
Step 507, after RN-MME is to the success of RN authentications, UE context transfer confirmation messages are replied to DeNB.
Step 508, RN-MME is that RN distributes interim subscriber identity.
, can also it will be appreciated by those skilled in the art that when if DeNB determines that above-mentioned RN-MME failures are i.e. unavailable
Other MME are selected as RN-MME for RN-UE, and RN-UE contextual information is sent to the selected RN-MME.Send
Mode it is identical with the method shown in Fig. 4 and Fig. 5, repeat no more its transmission flow here.
Fig. 6 is the composition structural representation of the updating device of relay node contextual information of the present invention, as shown in fig. 6, this
The updating device determining unit 60 and transmitting element 61 of invention relay node contextual information, wherein：
Determining unit 60, when the mobile management unit that the RN for being determined as UE is accessed fails or restarted, triggering is sent
Unit；
Transmitting element 61, for the contextual information as UE RN to be sent to the mobile management list for the RN gravity treatments
Member or the mobile management unit after restarting.
Above-mentioned mobile management unit is MME.
It will be appreciated by those skilled in the art that the processing list being related in the updating device of above-mentioned relay node contextual information
The function of member can be realized by hardware circuit, or by the corresponding software of computing device.The function of above-mentioned each processing unit, can
Understand with reference to the associated description of the update method of foregoing relay node contextual information.
The present invention also describes a kind of more new system of relay node contextual information, including DeNB, RN and mobile management
Unit, wherein,
DeNB, after the mobile management unit that the RN for being determined as UE is accessed fails or restarted, by above and below the RN
Literary information is sent to as the mobile management unit of the RN gravity treatments or the mobile management unit after restarting.
Above-mentioned mobile management unit is further used for, it is determined that received RN contextual information lacks information
When, the contextual information of the RN is updated by HSS.
Above-mentioned mobile management unit is further used for, and the RN accessed as UE is carried out according to the contextual information of the RN
Authentication.
Above-mentioned mobile management unit is further used for, and interim subscriber identity is distributed for the RN.
Above-mentioned mobile management unit is MME.
It will be appreciated by those skilled in the art that the present invention has no change, therefore, associated nets to existing network architecture
Member and its structure, reference can be made to system architecture shown in earlier figures 2 and understand.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (11)
1. a kind of update method of relay node contextual information, it is characterised in that methods described includes：
After the mobile management unit that the via node RN that donor base station DeNB is determined as user equipment (UE) is accessed is restarted, by described in
RN contextual information is sent to the mobile management unit after restarting；Wherein, the contextual information of the RN includes the RN's
The tracking area of user's mark, carrying information and correlation, and the contextual information of the RN is used for the mobile management unit pair
The RN carries out authentication verification.
2. according to the method for claim 1, it is characterised in that methods described also includes：
When the mobile management unit determines that received RN contextual information lacks information, taken by home subscriber
Business device HSS updates the contextual information of the RN.
3. according to the method for claim 1, it is characterised in that methods described also includes：
The mobile management unit carries out authentication according to the contextual information of the RN to the RN.
4. according to the method in any one of claims 1 to 3, it is characterised in that methods described also includes：
The mobile management unit is that the RN distributes interim subscriber identity.
5. according to the method for claim 4, it is characterised in that the mobile management unit is mobility management entity MME.
6. a kind of updating device of relay node contextual information, it is characterised in that described device includes determining unit and transmission
Unit, wherein：
Determining unit, when the mobile management unit that the RN for being determined as UE is accessed is restarted, trigger transmitting element；
Transmitting element, for the contextual information of the RN to be sent to the mobile management unit after restarting for the RN；Wherein,
The tracking area of user mark of the contextual information of the RN including the RN, carrying information and correlation, and the RN's is upper
Context information is used for the mobile management unit and carries out authentication verification to the RN.
7. device according to claim 6, it is characterised in that the mobile management unit is MME.
8. a kind of more new system of relay node contextual information, including DeNB, RN and mobile management unit, it is characterised in that
DeNB, after the mobile management unit that the RN for being determined as UE is accessed is restarted, the contextual information of the RN is sent
To the mobile management unit after restarting for the RN；Wherein, the contextual information of the RN includes user's mark of the RN, held
Information carrying ceases and the tracking area of correlation；
The mobile management unit, authentication is carried out to the RN accessed as UE for the contextual information according to the RN.
9. system according to claim 8, it is characterised in that
The mobile management unit is further used for, it is determined that when received RN contextual information lacks information, leads to
Cross the contextual information that HSS updates the RN.
10. the system according to any one of claim 8 to 9, it is characterised in that
The mobile management unit is further used for, and interim subscriber identity is distributed for the RN.
11. system according to claim 10, it is characterised in that the mobile management unit is MME.
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| CN101883442B (en) * | 2010-06-30 | 2013-12-11 | 新邮通信设备有限公司 | Reset method of S1 interface of LTE-A (Long Term Evolution-Advanced) system |
| CN102076041B (en) * | 2011-01-30 | 2014-10-29 | 大唐移动通信设备有限公司 | Resource allocation method and device |
| CN102118808B (en) * | 2011-03-03 | 2014-11-12 | 电信科学技术研究院 | Method for triggering switching and transferring identification information of mobile management entity pool and equipment |
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| S2-112470 Discussion on off-loading Relay from MME;ZTE;《3GPP TSG SA WG2 Meeting #85》;20110520;第2.1及2.3节 * |
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Effective date of registration: 20201201 Address after: 266 Century Avenue, high tech Zone, Nantong City, Jiangsu Province Patentee after: Nantong Guoxin Intellectual Property Agency Ltd. Address before: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice Patentee before: ZTE Corp. Effective date of registration: 20201201 Address after: 1 / F, building 1, 198 Changping Road, Nantong City, Jiangsu Province 226001 Patentee after: NANTONG WEIXING MACHINE Co.,Ltd. Address before: 266 Century Avenue, high tech Zone, Nantong City, Jiangsu Province Patentee before: Nantong Guoxin Intellectual Property Agency Ltd. |
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