CN101272541B - Base station subsystem context uploading method, downloading method and device - Google Patents

Base station subsystem context uploading method, downloading method and device Download PDF

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Publication number
CN101272541B
CN101272541B CN 200810093498 CN200810093498A CN101272541B CN 101272541 B CN101272541 B CN 101272541B CN 200810093498 CN200810093498 CN 200810093498 CN 200810093498 A CN200810093498 A CN 200810093498A CN 101272541 B CN101272541 B CN 101272541B
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base station
station subsystem
context
subsystem context
message
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CN101272541A (en
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陈勇智
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2009/071548 priority patent/WO2009132584A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer

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  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses an upload method for the context of a base station subsystem which includes: a message which carries the context of the base station subsystem is constructed and the message which carries the context of the base station subsystem is sent to a general packet radio services support node or a mobile management entity. The invention also discloses a download method for the context of the base station subsystem which includes: the message which carries the context of the base station subsystem which is sent out by a source enhanced base station subsystem is received, the carried context of the base station subsystem thereof is stored, the context request of the base station subsystem which is sent out by a target enhancing base station subsystem is received and the message which carries the context of the base station subsystem is sent out to the target enhancing base station subsystem after the context request of the base station subsystem which is sent out by a target enhancing base station subsystem is received. The invention also discloses a corresponding device. By adopting the invention, LLC and SNDCP move downward to a BSS and come out of an Iu-PS interface to successively accomplish the process adaptation of Cell Update and Routeing Area Update.

Description

Base station subsystem context uploading method, method for down loading and device
Technical field
The present invention relates to communication technical field, relate in particular to a kind of base station sub-system (BSS, Base StationSystem) context (Context) upload method, method for down loading and device.
Background technology
Now; 3G (Third Generation) Moblie technology (3G, Third Generation), Long Term Evolution (LTE, Long Term Evolution) system more and more widely be applied to communication technical field; But the gsm system that belongs to the 2G category originally also can't be substituted at short notice; In long practical application, gsm system has been laid deep market value basis and has been had the network coverage and the ripe service application system of global scale, thus it will with 3G, the long-term co-existence of LTE system.
Along with the professional (EDGE of enhancement mode GSM evolution data; Enhanced Data rates for GSMEvolution) development of the technology of eating dishes without rice or wine; Gsm system is also strengthened the professional tenability of data greatly, can let more 3G service bearer on the GSM/EDGE network.
Simultaneously, the enhancing of the ability of eating dishes without rice or wine has brought the raising of Packet Service throughput, and the performance of network side is brought higher requirement.In order further to reduce propagation delay time, improve user data rate, need be optimized existing GSM network configuration, let more moving down near the BSS side of eating dishes without rice or wine handle with the relevant protocol stack of eating dishes without rice or wine.Simultaneously, make gsm system carry out chain of command and separate, make business development really be independent of network with user plane.
Wherein, relevant agreement comprises with eating dishes without rice or wine: subnet be correlated with convergence protocol (SNDCP, Sub-NetworkDependent Convergence Protocol), logic link control (LLC, Logical Link Control).After these agreements move down into the BSS processing; Can significantly improve the network processes performance; And go out the Iu-PS/S1 interface, realize separating of GSM EDGE Radio Access Network (GERAN, GSM/EDGE Radio Access Network) network side user and chain of command; Path to Universal Mobile Telecommunications System (UMTS, Universal Mobile Telecommunications System), LTE smooth evolution is provided.
Before LLC, SNDCP agreement moved down, the related context parameter of LLC, SNDCP was kept on the GPRS serving GPRS support node (SGSN, Serving GPRS Support Node).After LLC, SNDCP move down into BSS from SGSN; The encryption/decryption functionality of LLC, the data compression/decompression of SNDCP contract and correspondingly move down into the BSS processing; Some LLC, SNDCP consultation parameter also are kept on the BSS; And along with the connection of packet domain (PS, Packet Switching) signaling discharges and discharges.
Interface between travelling carriage (MS, Mobile station) and the BBS is called as Um, and when keeping the Um Interface agreement constant, the BSS that can carry out the SNDCP/LLC protocol processes is called as eBSS; Relevant with specific MS among the eBSS, comprised Radio Link control (RLC; Radio Link Control)/protocol entity such as medium access control (MAC, Medium Access Control), LLC, SNDCP recovers necessary information and is called as eBSS Context.EBSS Context is indicated by temporary logical link sign (TLLI, Temporary Logical Link Identity).
According to Um Interface agreement regulation, when MS is in ready (ready) state, when entering into new sub-district; If (RA, Routeing Area) is constant in the route district, then cell update (Cell Update) incident takes place; If RA changes, Routing Area Update (RouteingArea Update) incident takes place.
In research and practice process to prior art, the inventor finds that there is following problem in prior art:
When MS carried out Cell Update, BSS changed, and MS sends a LLC frame that has comprised any type of TLLI to new BSS.If same SGSN/ mobile management entity (MME; Mobile Management Entity) the Cell Update between interior BSS; And the LLC frame is encrypted, because relevant with this MS eBSS Context of target BS S exists, does not also just have the encryption key (Kc relevant with this MS; Ciphering key), encryption key sequence number (CKSN; Ciphering KeySequence Number), input offset parameter-unacknowledged information (IOV-UI, Input Offset Value-Unconfirmed Information), input offset parameter-information (IOV-I, Input Offset Value-Information) exist; Can not be to the deciphering of this LLC frame, can only abandon this message and re-authenticate.
When MS carried out Routeing Area Update, according to the agreement regulation, Routeing Area Update message was not encrypted, and has carried CKSN.Because target BS S does not have the relevant eBSS Context of this MS of source BSS; Like IOV-UI/IOV-I; And the relevant exchange sign (XID, eXchange IDentifier) of LLC/SDNCP, can not carry out the encryption and decryption and the compressed and decompressed function of data in the subsequent process.Have only LLC, SNDCP entity resetted and carry out the negotiation of XID again after, just can make LLC, SNDCP entity function recover normal.
Summary of the invention
The technical problem that the embodiment of the invention will solve provides a kind of base station subsystem context uploading method, method for down loading and device, so that Cell Update, Routeing Area Update can carry out smoothly.Wherein, the base station subsystem context in the embodiment of the invention is relevant with specific mobile station MS, comprises protocol entity and recovers needed information.Base station subsystem context can strengthen base station subsystem context for the source, and base station sub-system is the enhancing base station sub-system in the GSM EDGE Radio Access Network, protocol entity for from GPRS, move down into base station sub-system with the relevant protocol entity of eating dishes without rice or wine.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of base station subsystem context uploading method on the one hand, comprising: the message that the base station sub-system structure carries base station subsystem context; And, supply GPRS serving GPRS support node or mobile management entity to obtain and preserve said base station subsystem context to GPRS serving GPRS support node or the said message of carrying base station subsystem context of mobile management entity transmission.On the other hand, a kind of base station subsystem context method for down loading is provided, has comprised: reception sources strengthens the message of carrying base station subsystem context that base station sub-system is sent; Preserve the base station subsystem context that wherein carries; Receiving target strengthens the base station subsystem context request that base station sub-system is sent; After receiving that target strengthens the base station subsystem context request of base station sub-system transmission, strengthen base station sub-system to said target and send the message of carrying said base station subsystem context.
On the other hand, a kind of base station subsystem context method for down loading is provided, has comprised: send the base station subsystem context request to GPRS serving GPRS support node or mobile management entity, base station subsystem context is downloaded in request; Receive the message of carrying said base station subsystem context that said GPRS serving GPRS support node or mobile management entity send; From said message of carrying said base station subsystem context, obtain said base station subsystem context.
On the other hand, a kind of base station sub-system is provided, has comprised: structural unit is used to construct the message of carrying base station subsystem context; First transmitting element; Be used for sending said message of carrying base station subsystem context, supply GPRS serving GPRS support node or mobile management entity to obtain and preserve said base station subsystem context to GPRS serving GPRS support node or mobile management entity.On the other hand, a kind of context management device is provided, has comprised: the source receiving element is used for reception sources and strengthens the message of carrying base station subsystem context that base station sub-system is sent; Preserve the base station subsystem context that wherein carries; The target receiving element is used for receiving target and strengthens the base station subsystem context request that base station sub-system is sent;
The 6th transmitting element is used for after receiving that target strengthens the base station subsystem context request of base station sub-system transmission, strengthening base station sub-system to said target and sending the message of carrying said base station subsystem context.
On the other hand, a kind of base station sub-system is provided, has comprised:
The 11 transmitting element is used for sending the base station subsystem context request to GPRS serving GPRS support node or mobile management entity, and base station subsystem context is downloaded in request;
Second receiving element is used to receive the message of carrying said base station subsystem context that said GPRS serving GPRS support node or mobile management entity send;
First acquiring unit is used for obtaining said base station subsystem context from said message of carrying said base station subsystem context.
Can find out by above technical scheme; The embodiment of the invention arrives GPRS serving GPRS support node or mobile management entity with base station subsystem context uploading; When making Cell Update, Routeing Area Update generation; Target eBSS can obtain the eBSS Context on the eBSS of source through packet wireless business serving GPRS support node or mobile management entity, and is adaptive with the flow process of accomplishing Cell Update, RouteingArea Update.
Description of drawings
Fig. 1 is when going out Iu-PS interface, the user face protocol stack structure chart after the evolution;
Fig. 2 is when going out Iu-PS interface, the chain of command diagram of protocol architecture after the evolution;
Fig. 3 is when going out the S1 interface, the user plane protocol Organization Chart after the evolution;
Fig. 4 is when going out the S1 interface, the chain of command diagram of protocol architecture after the evolution;
Fig. 5 is base station subsystem context uploading method embodiment one flow chart provided by the invention;
Fig. 6 is base station subsystem context uploading method embodiment two flow charts provided by the invention;
Fig. 7 is base station subsystem context uploading method embodiment three flow charts provided by the invention;
Fig. 8 is base station subsystem context method for down loading embodiment one flow chart provided by the invention;
Fig. 9 is base station subsystem context method for down loading embodiment two flow charts provided by the invention;
The method flow diagram of the cell update that Figure 10 provides for the embodiment of the invention;
The method flow diagram of the Routing Area Update that Figure 11 provides for the embodiment of the invention;
The method flow diagram of the transmission base station subsystem context that Figure 12 provides for the embodiment of the invention;
Enhancing base station sub-system embodiment one structure chart that Figure 13 provides for the embodiment of the invention;
Context management device embodiment one structure chart that Figure 14 provides for the embodiment of the invention;
Enhancing base station sub-system embodiment two structure charts that Figure 15 provides for the embodiment of the invention.
Embodiment
The invention provides a kind of base station subsystem context uploading method, method for down loading and device, when the affiliated eBSS in terminal was changed, target eBSS can obtain the eBSS Context on the eBSS of source.
Iu-PS interface chain of command agreement comprises: Radio Access Network application protocol (RANAP; RadioAccess Network Application Protocol), Signaling System 7(SS-7) (SS7; Signaling SystemNumber 7), SCTP (SCTP, Stream Control Transmission Protocol); Iu PS interface user plane protocol comprises: GPRS Tunnel Protocol user plane (GTP_U, GPRS TunnelingProtocol for User Plane), UDP (UDP, User Datagram Protocol).The RANAP that the S1 interface is based on the Iu interface revises, and at chain of command, the S1 interface application protocol substitutes the RANAP of Iu-PS interface; In user plane, adopt the GTPU that strengthens, i.e. GTPU '.
LLC, SNDCP agreement move down, and when going out Iu-PS interface, the user plane protocol stack architecture after the evolution is as shown in Figure 1:
MS is connected with BSS through Um Interface, and BSS connects through Iu-PS interface, gn interface and SGSN/ gateway GPRS supporting node (GGSN) (GGSN, Gateway GPRS Supporting Node).
Comprise Internet protocol (IP, Internet Protocol), SNDCP, LLC, RLC, MAC, radio frequency (RF, Radio Frequency) in the protocol stack of MS; Comprise SNDCP, LLC, RLC, MAC, RF, GTP_U, UDP, IP, layer 2 (L2, layer 2), layer 1 (L1, layer 1) in the protocol stack of BSS; Comprise IP, GTP_U, UDP, L2, L1 in the protocol stack of SGSN/GGSN.
When going out Iu-PS interface, the chain of command protocol infrastructure after the evolution is as shown in Figure 2:
MS is connected with BSS through Um Interface, and BSS is connected with SGSN through Iu-PS interface.
Comprise GPRS Mobility Management agreement/session management (GMM/SM, GPRSMobility Management/Session Management), LLC, RLC, MAC, RF in the protocol stack of MS; Comprise LLC, RLC, MAC, RF, RANAP, SCCP (SCCP in the protocol stack of BSS; Signalling Connection control Part), Message Transfer Part third level user adaptation layer (M3UA; MTP3 User Adaptation layer), SCTP (SCTP, Stream Control TransportProtocol), IP; Comprise GMM/SM, RANAP, SCCP, M3UA, SCTP, IP in the protocol stack of SGSN/GGSN.
When going out the S1 interface, the user plane protocol framework after the evolution is as shown in Figure 3:
MS is connected with BSS through Um Interface, and BSS is connected with S-GW through the SI-U interface.
Comprise IP, SNDCP, LLC, RLC, MAC, RF in the protocol stack of MS; Comprise SNDCP, LLC, RLC, MAC, RF, GTP_U, UDP, IP, L2, L1 in the protocol stack of BSS; Comprise IP, GTP_U, UDP, L2, L1 in the protocol stack of S-GW.
When going out the S1 interface, the chain of command protocol infrastructure after the evolution is as shown in Figure 4:
MS is connected with BSS through Um Interface, and BSS is connected with MME through the SI-C interface.
Comprise GPRS Mobility Management agreement/session management (GMM/SM, GPRSMobility Management/Session Management), LLC, RLC, MAC, RF in the protocol stack of MS; Comprise LLC, RLC, MAC, RF, S1 interface application protocol (S1-AP), SCTP, IP, L2, L1 in the protocol stack of BSS; Comprise GMM/SM, S1-AP, SCTP, IP, L2, L1 in the protocol stack of MME.
In base station subsystem context uploading method provided by the invention, method for down loading embodiment; Source eBSS uploads to eBSS Context among the SGSN/MME and preserves; Target eBSS is that index is downloaded from SGSN/MME as required with TLLI; Thereby accomplish target BS S and go up protocol entities recoveries such as SNDCP, LLC, with the adaptive flow process of smooth completion Cell Update, RouteingArea Update.
EBSS Context has from the method that eBSS uploads to SGSN/MME: initiatively upload with passive and upload.Initiatively uploading is exactly to select initiatively send message to SGSN/MME suitable opportunity by eBSS, and eBSS Context is uploaded to SGSN/MME; Passive uploading exactly selects send message to eBSS suitable opportunity by SGSN/MME, and request eBSS uploads eBSS Context.
Promptly adopted the mode of initiatively uploading at base station subsystem context uploading method embodiment one provided by the invention, base station subsystem context uploading method embodiment one flow process provided by the invention is as shown in Figure 5:
EBSS sends to SGSN/MME and uploads base station subsystem context request (Upload eBSSContext Request) message; EBSS Context is uploaded to SGSN/MME; SGSN/MME long preservation eBSS Context information until the MS attachment removal, perhaps discharges for some reason unusually.
Can be the opportunity that eBSS sends Upload eBSS Context Request message: in the predetermined transmission cycle, send once at set intervals; Perhaps eBSS Context in time uploads after changing; Perhaps before the PS domain signaling connect to discharge etc.
In base station subsystem context uploading method embodiment one provided by the invention; SGSN/MME has preserved eBSS Context information; When eBSS changes; The target eBSS that becomes new eBSS can require to download the source eBSS Context information of its preservation to SGSN/MME, to accomplish the transfer of eBSSContext information to target eBSS.
Promptly adopted the passive mode of uploading at base station subsystem context uploading method embodiment two provided by the invention, base station subsystem context uploading method embodiment two flow processs provided by the invention are as shown in Figure 6:
Step 201, SGSN/MME send Upload eBSS Context Request message to eBSS, and request eBSS uploads eBSS Context.
SGSN/MME to the opportunity that eBSS sends Upload eBSS Context Request message can be: in the predetermined transmission cycle, send once at set intervals; Before the PS domain signaling connects release; When eBSSContext changes owing to incident; Perhaps target eBSS is when eBSSContext is downloaded in SGSN/MME request etc.
After step 202, eBSS receive Upload eBSS Context Request message; Transmission is uploaded base station subsystem context response (Upload eBSS Context Response) message to SGSN/MME, in Upload eBSS Context Response message, carries eBSS Context and gives SGSN/MME.
In base station subsystem context uploading method embodiment two provided by the invention; After SGSN/MME receives Upload eBSS Context Response message; Preserve the eBSS Context information that it carries, change at eBSS, target eBSS can be when SGSN/MME requires loading source eBSS Context information; Send to target eBSS, to accomplish of the transfer of eBSS Context information to target eBSS.
Further; Before if SGSN/MME is chosen in PS signaling connection release; Upload eBSS Context to source eBSS request; And release cause does not cause owing to the MS attachment removal; Can use SRNS Serving Radio Network Subsystem context request (SRNS CONTEXT REQUEST) message, SRNS Serving Radio Network Subsystem context response (SRNS CONTEXT RESPONSE) message, to the request that eBSS Context is uploaded in the eBSS initiation, this moment, base station subsystem context uploading method embodiment three flow processs provided by the invention were as shown in Figure 7:
Step 301, SGSN/MME send SRNS CONTEXT REQUEST message to source eBSS, and request eBSS uploads eBSS Context.
Step 302, source eBSS send SRNS CONTEXT RESPONSE message to SGSN/MME, in SRNS CONTEXT RESPONSE message, carry eBSS Context and give SGSN/MME.
Step 303, SGSN/MME send to source eBSS and connect release command (IU RELEASECOMMAND) message.
Step 304, source eBSS send connection to SGSN/MME and discharge completion (IU RELEASECOMPLETE) message, accomplish the PS signaling and connect release.
In base station subsystem context uploading method embodiment three provided by the invention; After SGSN/MME receives SRNS CONTEXT RESPONSE message; Preserve the eBSS Context information that it carries, change at eBSS, target eBSS can be when SGSN/MME requires loading source eBSS Context information; Send to target eBSS, to accomplish of the transfer of eBSS Context information to target eBSS.
Base station subsystem context method for down loading embodiment one flow process provided by the invention is as shown in Figure 8:
Step 401, when eBSS changes, send to SGSN/MME as the target eBSS of new eBSS and to download base station subsystem context request (Download eBSS Context Request) message, eBSS Context is downloaded in request.
After step 402, SGSN/MME receive Download eBSS Context Request message; If exist the PS domain signaling to connect between SGSN/MME and the source eBSS; Then send UploadeBSS Context Request message to source eBSS, eBSS Context is uploaded in request.
After step 403, source eBSS receive Upload eBSS Context Request message; Transmission is uploaded base station subsystem context response (Upload eBSS Context Response) message to SGSN/MME, in Upload eBSS Context Response message, carries eBSS Context and gives SGSN/MME.
Step 404, SGSN/MME send to target eBSS and download base station subsystem context response (Download eBSS Context Response) message, in Download eBSS Context Response message, carry eBSS Context and give target eBSS.
If do not exist the PS domain signaling to connect between SGSN/MME and the source eBSS, the eBSS Context that then directly will preserve downloads to target eBSS.
When between SGSN/MME and source eBSS, existing the PS domain signaling to connect, upload eBSS Context to source eBSS request and can guarantee that SGSN/MME can send to target eBSS with target eBSS Context.Certainly do not carry out the judgement that the PS domain signaling connects, the eBSS Context that directly will preserve downloads to target eBSS and also is fine.
Use base station subsystem context method for down loading embodiment one provided by the invention; Can the eBSS Context information of source eBSS be shifted to target eBSS; Thereby accomplish target eBSS and go up protocol entities recoveries such as SNDCP, LLC, with smooth completion Cell Update, Routeing Area Update.
Further; SGSN/MME is when receiving the download eBSS Context request that target eBSS initiates; If the PS signaling of SGSN/MME and source eBSS is connected also and exists; Then can use SRNSCONTEXT REQUEST message, SRNS CONTEXT RESPONSE message, to the request that eBSS Context is uploaded in eBSS initiation in source, this moment, base station subsystem context method for down loading embodiment two flow processs provided by the invention were as shown in Figure 9:
Step 501, target eBSS send SRNS CONTEXT REQUEST message to SGSN/MME, and eBSS Context is downloaded in request.
After step 502, SGSN/MME receive SRNS CONTEXT REQUEST message, exist if the PS signaling of SGSN/MME and source eBSS is connected also, SGSN/MME sends SRNS CONTEXT REQUEST message to source eBSS, and request eBSS uploads eBSS Context.
Step 503, source eBSS send SRNS CONTEXT RESPONSE message to SGSN/MME, in SRNS CONTEXT RESPONSE message, carry eBSS Context and give SGSN/MME.
Step 504, SGSN/MME send SRNS CONTEXT RESPONSE message to target eBS S, in SRNS CONTEXT RESPONSE message, carry eBSS Context and give SGSN/MME.
If do not exist the PS domain signaling to connect between SGSN/MME and the source eBSS, the eBSS Context that then directly will preserve downloads to target eBSS.
When between SGSN/MME and source eBSS, existing the PS domain signaling to connect, upload eBSS Context to source eBSS request and can guarantee that SGSN/MME can send to target eBSS with target eBSS Context.Certainly do not carry out the judgement that the PS domain signaling connects, the eBSS Context that directly will preserve downloads to target eBSS and also is fine.
Use base station subsystem context method for down loading embodiment two provided by the invention; Can the eBSS Context information of source eBSS be shifted to target eBSS; Thereby accomplish target eBSS and go up protocol entities recoveries such as SNDCP, LLC, with smooth completion Cell Update, Routeing Area Update.
In the present embodiment; The eBSS Context information element of between eBSS and SGSN/MME, uploading download mainly comprises: Kc, Ciphering key sequence number, LLC layer parameter (LLC layerparameters), SNDCP XID parameter (SNDCP XID parameters), discontinuous reception parameters (DRX parameter), MS wireless access capability (MS Radio Access Capability), block data protocol context state (PDP context status), multimedia broadcasting and multicast context state (MBMScontext status), international mobile subscriber identity (IMSI; International Mobile SubscriberIdentification Number), base station sub-system sign (BSS-ID; BSS-Identification) etc.; In the actual motion; EBSS Context information element can be above-mentioned whole content, also can be the content of above-mentioned part.
When MS is in the ready state, when entering into new sub-district, if RA is constant, then the cell update incident takes place, and the base station subsystem context uploading method embodiment that the embodiment of the invention provides provides the method for corresponding cell update, and its flow process is shown in figure 10:
Step 601, MS send a up any type LLC frame to carry out CellUpdate to target eBSS.
This LLC frame possibly encrypted also and possibly not encrypt, and comprises TLLI in this LLC frame.
After step 602, target eBSS receive the LLC frame of MS, if can not find corresponding eBSS Context according to its TLLI that carries, this LLC frame of buffer memory then.
Step 603, target eBSS send base station subsystem context request (eBSSCONTEXT REQUEST) message to SGSN, and eBSS Context is downloaded in request.
In the present embodiment, eBSS CONTEXT REQUEST message possibly be Download eBSSContext Request message, also possibly be SRNS CONTEXT REQUEST message.
After step 604, SGSN receive eBSS Context Request message, exist if the PS domain signaling between eBSS and the SGSN connects still, then send eBSS CONTEXT REQUEST message to source eBSS, eBSS Context is uploaded in request.
After SGSN receives eBSS Context Request message, exist, then upload eBSS Context, otherwise the eBSS Context that directly will preserve downloads to target eBSS to source eBSS request if the PS domain signaling between eBSS and the SGSN connects still.
Step 605, source eBSS send base station subsystem context response (eBSS CONTEXTRESPONSE) message to SGSN, in eBSS CONTEXT RESPONSE message, carry eBSS Context and give SGSN.
In the present embodiment, eBSS CONTEXT RESPONSE message possibly be Download eBSSContext RESPONSE message, also possibly be SRNS CONTEXT RESPONSE message.
Step 606, SGSN send eBSS CONTEXT RESPONSE message to target eBSS, in eBSS CONTEXT RESPONSE message, carry eBSS Context and give target eBSS.
Step 607, target eBSS recover related protocol entities such as LLC, SNDCP according to the parameter among the eBSS Context.
Step 608, target eBSS structure services request (Service Request) message are sent to SGSN, carry out Service Request process.
Step 609, when needed between SGSN and the target eBSS, is carried out security negotiation (Security Functions) between target eBSS and the MS;
The inessential step of this step.
Step 610, SGSN return service to target eBSS and accept (Service Accept) message, accomplish Service Request process.
Step 611, SGSN send RAB circuit assignment request (RadioAccess Bearer Assignment Request) message to target eBSS.
After Service Request process finished, target eBSS may send Radio Access Bearer Assignment Request message to SGSN/MME, initiated RAB circuit (RAB, RadioAccess Bearer) assignment process.
Step 612, target eBSS send RAB circuit assignment response (RadioAccess Bearer Assignment Response) message to SGSN.
Step 613, target eBSS resolve the LLC frame according to parameters such as Kc, IOV-UI, IOV-I among the eBSS Context that obtains.
The RAB assignment process if the LLC frame of buffer memory is encrypted, is then deciphered according to parameters such as Kc, IOV-UI, IOV-I among the eBSS Context after accomplishing, and as required, can the message after the deciphering be sent to SGSN.
Step 614, as required, target eBSS sends to SGSN with data decryption (Decrypted data/signal).
The method of the cell update that the embodiment of the invention provides is transferred to target eBSS through SGSN/MME with the eBSSContext of source eBSS, accomplishes cell update.
Signaling title in the present embodiment is primarily aimed at SGSN, and when using MME to realize, title may be used other title, but its function is consistent.
When MS is in the ready state; When entering into new sub-district, if RA changes, then the Routing Area Update incident takes place; The base station subsystem context uploading method embodiment that the embodiment of the invention provides provides the method for corresponding Routing Area Update, and its flow process is shown in figure 11:
Step 701, MS send Routing Area Update request (Routeing Area UpdateRequest) message to target eBSS.
Step 702, target eBSS send eBSS CONTEXT REQUEST message to SGSN, and eBSS Context is downloaded in request.
After target eBSS receives the Routeing Area Update Request message of MS,, then download eBSS Context to the SGSN request if can not find corresponding eBSS Context according to TLLI.
In the present embodiment, eBSS CONTEXT REQUEST message possibly be Download eBSSContext Request message, also possibly be SRNS CONTEXT REQUEST message.
After step 703, SGSN receive eBSS CONTEXT REQUEST message, exist if the PS domain signaling between eBSS and the SGSN connects still, then send eBSS CONTEXTREQUEST message to source eBSS, eBSS Context is uploaded in request.
After SGSN receives eBSS Context Request message, exist, then upload eBSS Context, otherwise the eBSS Context that directly will preserve downloads to target eBSS to source eBSS request if the PS domain signaling between eBSS and the SGSN connects still.
Step 704, source eBSS send eBSS CONTEXT RESPONSE message to SGSN, in eBSS CONTEXT RESPONSE message, carry eBSS Context and give SGSN/MME.
In the present embodiment, eBSS CONTEXT RESPONSE message possibly be Download eBSSContext RESPONSE message, also possibly be SRNS CONTEXT RESPONSE message.
Step 705, SGSN/MME send eBSS CONTEXT RESPONSE message to target eBSS, in eBSS CONTEXT RESPONSE message, carry eBSS Context and give target eBSS.
Step 706, target eBSS recover related protocol entities such as LLC, SNDCP according to the parameter among the eBSS Context, and send Routeing Area Update Request message to SGSN/MME.
Step 707, when needed between SGSN and the target eBSS, is carried out Security Functions between target eBSS and the MS;
The inessential step of this step.
Step 708, SGSN send Routing Area Update to MS and accept (Routeing Area UpdateAccept) message.
Step 709, according to actual conditions, MS can send Routing Area Update to SGSN and accomplish (RouteingArea Update Complete) message.
Step 710, target eBSS judge whether to recover RAB according to the content among the eBSS Context and carry, and if desired, then carry out Service Request flow process.
Step 711, target eBSS structure Service Request message are sent to SGSN, carry out the ServiceRequest process.
Step 712, SGSN return Service Accept message to target eBSS, accomplish the ServiceRequest process.
Step 713, SGSN send Radio Access Bearer Assignment Request message to target eBSS.
After Service Request process finished, target eBSS may send RadioAccess Bearer Assignment Request message to SGSN/MME, initiated the RAB assignment process.
Step 714, target eBSS send Radio Access Bearer AssignmentResponse message to SGSN.
The method of the Routing Area Update that the embodiment of the invention provides is transferred to target eBSS through SGSN with the eBSSContext of source eBSS, accomplishes Routing Area Update.
Signaling title in the present embodiment is primarily aimed at SGSN, and when using MME to realize, title may be used other title, but its function is consistent.
Further, under some scene, after MS moved, SGSN also possibly change, and the embodiment of the invention provides the method for between SGSN, transmitting base station subsystem context.
The base station subsystem context uploading method embodiment that the embodiment of the invention provides provides the method embodiment of corresponding transmission base station subsystem context, and its flow process is shown in figure 12:
Step 801, SGSN can find that according to the route district information of MS self is a new SGSN for MS; Do not preserve relevant eBSS Context; At this moment; New SGSN sends SGSN context request (SGSN Context Request) message to old SGSN, and the eBSSContext on the old SGSN is downloaded in request.
Step 802, after old SGSN is received SGSN Context Request message; Old SGSN sends SGSN context response (SGSN Context Response) message to new SGSN, the partial information of eBSS Context is attached in the privately owned expansion (Private Extension) of SGSN Context Response and passes to new SGSN.
SGSN also possibly be MME in the present embodiment, and its concrete implementation method can no longer repeat at this with reference to foregoing description.
Further; At existing gsm system, in the PS hand-off execution process, the downstream packets forwarding of data be from the source BSS to SGSN again to target BS S; In actual operation process; MS carries out in Cell Update or the Routeing Area Update process, and source BSS does not send successful data can not be forwarded to target BS S by SGSN, thereby causes losing of downlink data packet.
When switching eBSS; In order to make source BSS not send the complete target BS S that transfers to of successful downlink data packet; Base station subsystem context uploading method embodiment provided by the invention provides through additional BSS-id in eBSS Context, between the base station sub-system that strengthens, can't harm the method for switching.
Can't harm between the base station sub-system of the enhancing that the embodiment of the invention provides among the method embodiment that switches; Source eBSS is placed on BSS eContext with it self sign BSS-id and uploads to SGSN; After target eBSS receives Cell Update; Through knowing the position of source BSS from the B parameter SS-id of the BSS Context that downloads, and initiate switching command (handover command) to source BSS.
After source BSS receives handover command, can rlc layer not received that the data forwarding of affirmation gives target eBSS, prevent losing of downlink data packet, accomplish to utilize the affirmation pattern of RLC to do harmless the switching.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in a kind of computer-readable recording medium; This program comprises the steps: when carrying out
A kind of base station subsystem context uploading method comprises:
The message that structure carries base station subsystem context; Send said message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity, strengthen base station sub-system so that GPRS serving GPRS support node or mobile management entity can send to target with said base station subsystem context.
A kind of base station subsystem context method for down loading comprises:
The message that structure carries base station subsystem context; Send said message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity, strengthen base station sub-system so that GPRS serving GPRS support node or mobile management entity can send to target with said base station subsystem context.
A kind of base station subsystem context method for down loading comprises:
Reception sources strengthens the message of carrying base station subsystem context that base station sub-system is sent; Preserve the base station subsystem context that wherein carries; Receiving target strengthens the base station subsystem context request that base station sub-system is sent; After receiving that target strengthens the base station subsystem context request of base station sub-system transmission, strengthen base station sub-system to said target and send the message of carrying said base station subsystem context.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
Enhancing base station sub-system embodiment one structure that the embodiment of the invention provides is shown in figure 13, comprising:
Structural unit 1310 is used to construct the message of carrying base station subsystem context;
First transmitting element 1320; Be used for sending said message of carrying base station subsystem context, strengthen base station sub-system so that GPRS serving GPRS support node or mobile management entity can send to target with said base station subsystem context to GPRS serving GPRS support node or mobile management entity.
Tag unit 1330 is used for that the base station sub-system sign is placed on said base station subsystem context and sends to said GPRS serving GPRS support node.
Wherein, said first transmitting element 1320 comprises:
Second transmitting element 1321 is used for sending the message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity at the fixed time; Or,
The 3rd transmitting element 1322 is used for when the travelling carriage attachment removal, sending the message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity; Or,
The 4th transmitting element 1323; Be used for after the base station subsystem context request message that receives the transmission of said GPRS serving GPRS support node or mobile management entity, send the message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity; Or,
The 5th transmitting element 1324; Be used for after the base station subsystem context request message that receives the transmission of said GPRS serving GPRS support node or mobile management entity, send the message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity.
The enhancing base station sub-system embodiment one concrete working method that the embodiment of the invention provides can no longer repeat at this with reference to the description of preceding text to base station subsystem context uploading method embodiment provided by the invention.
The context management device example structure that the embodiment of the invention provides is shown in figure 14, comprising:
Source receiving element 1401 is used for reception sources and strengthens the message of carrying base station subsystem context that base station sub-system is sent; Preserve the base station subsystem context that wherein carries;
Target receiving element 1402 is used for receiving target and strengthens the base station subsystem context request that base station sub-system is sent;
The 6th transmitting element 1403 is used for after receiving that target strengthens the base station subsystem context request of base station sub-system transmission, strengthening base station sub-system to said target and sending the message of carrying said base station subsystem context.
The 7th transmitting element 1404; Be used for after receiving said base station subsystem context request; Be connected with packet domain that said source strengthens base station sub-system when existing; Strengthen base station sub-system to said source and send the base station subsystem context request, ask said source to strengthen base station sub-system and upload said base station subsystem context; Or,
The 8th transmitting element 1405 is used for strengthening base station sub-system to said source at the fixed time and sends the base station subsystem context request, asks said source to strengthen base station sub-system and uploads said base station subsystem context; Or,
The 9th transmitting element 1406; Be used for before the packet domain with said source enhancing base station sub-system is connected release; Strengthen base station sub-system to said source and send the base station subsystem context request, ask said source to strengthen base station sub-system and upload said base station subsystem context.
The tenth transmitting element 1407 is used for sending GPRS serving GPRS support node context request message to old GPRS serving GPRS support node, and base station subsystem context is downloaded in request;
First receiving element 1408 is used to receive the message of carrying said base station subsystem context that said old GPRS serving GPRS support node returns.
Enhancing base station sub-system embodiment two structures that the embodiment of the invention provides are shown in figure 15, comprising:
The 11 transmitting element 1501 is used for sending the base station subsystem context request to GPRS serving GPRS support node or mobile management entity, and base station subsystem context is downloaded in request;
Second receiving element 1502 is used to receive the message of carrying said base station subsystem context that said GPRS serving GPRS support node or mobile management entity send;
First acquiring unit 1503 is used for obtaining said base station subsystem context from said message of carrying said base station subsystem context.
The 3rd receiving element 1504 was used for before sending the base station subsystem context request, and the frame of cell update is carried out in the requirement that receiving mobile sends;
Buffer unit 1505 is used for when not having the corresponding base station subsystem context, the said frame of buffer memory;
Resolution unit 1506 is used for after getting access to said base station subsystem context, resolving said frame according to said base station subsystem context, accomplishes the cell update flow process.
The 4th receiving element 1507 was used for before sending the base station subsystem context request Routing Area Update request message that receiving mobile sends;
Recovery unit 1508 is used for after getting access to said base station subsystem context, recovers the related protocol entity according to said base station subsystem context, accomplishes Routing Area Update.
Data capture unit 1509 is used for after getting access to said base station subsystem context, according to the sign of the base station sub-system in the said base station subsystem context, knows that the source strengthens the position of base station sub-system; Strengthen base station sub-system to said source and obtain the data that wireless chain control layer is not received affirmation.
The context management device that the embodiment of the invention provides can be positioned at SGSN, also can be positioned at MME.
The context management device embodiment that the embodiment of the invention provides, and the enhancing base station sub-system embodiment two that provides of the embodiment of the invention; Its concrete working method can no longer repeat at this with reference to the description of preceding text to base station subsystem context method for down loading embodiment provided by the invention.
More than a kind of base station subsystem context uploading method provided by the present invention, method for down loading and device have been carried out detailed introduction; Used concrete example among this paper 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 on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.

Claims (20)

1. a base station subsystem context uploading method is characterized in that, comprising:
The message that the base station sub-system structure carries base station subsystem context, said base station subsystem context is relevant with specific mobile station MS, comprises protocol entity and recovers needed information;
Said base station sub-system is sent said message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity; Supply said GPRS serving GPRS support node or mobile management entity to obtain and preserve said base station subsystem context; Wherein, Said base station sub-system is the enhancing base station sub-system in the professional EDGE wireless access network of global system for mobile communications GSM/ enhancement mode GSM evolution data, said protocol entity for from the GPRS serving GPRS support node, move down into said base station sub-system with the relevant protocol entity of eating dishes without rice or wine.
2. base station subsystem context uploading method as claimed in claim 1 is characterized in that, saidly sends the message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity and comprises:
Send the message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity at the fixed time; Or,
After base station subsystem context refreshes, send the message of carrying base station subsystem context to the GPRS serving GPRS support node; Or,
Before the packet domain signaling with said GPRS serving GPRS support node or mobile management entity is connected release, send the message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity; Or,
After the base station subsystem context request message that receives the transmission of said GPRS serving GPRS support node or mobile management entity, send the message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity.
3. like claim 1 or 2 described base station subsystem context uploading methods, it is characterized in that, also comprise:
The base station sub-system sign is placed in the said base station subsystem context to said GPRS serving GPRS support node transmission.
4. a base station subsystem context method for down loading is characterized in that, comprising:
Reception sources strengthens the message of carrying base station subsystem context that base station sub-system is sent; Said base station subsystem context is relevant with specific mobile station MS; Comprise protocol entity and recover needed information; Said base station subsystem context is that the source strengthens base station subsystem context; Said base station sub-system is the enhancing base station sub-system in the professional EDGE wireless access network of global system for mobile communications GSM/ enhancement mode GSM evolution data, said protocol entity for from the GPRS serving GPRS support node, move down into said base station sub-system with eat dishes without rice or wine relevant protocol entity;
Preserve the base station subsystem context that wherein carries;
Receiving target strengthens the base station subsystem context request that base station sub-system is sent;
After receiving that target strengthens the base station subsystem context request of base station sub-system transmission, strengthen base station sub-system to said target and send the message of carrying said base station subsystem context.
5. base station subsystem context method for down loading as claimed in claim 4 is characterized in that, also comprises:
After receiving said base station subsystem context request; Be connected with packet domain that said source strengthens base station sub-system when existing; Strengthen base station sub-system to said source and send the base station subsystem context request, ask said source to strengthen base station sub-system and upload said base station subsystem context; Or,
Strengthen base station sub-system to said source at the fixed time and send the base station subsystem context request, ask said source to strengthen base station sub-system and upload said base station subsystem context; Or,
Before the packet domain signaling with said source enhancing base station sub-system is connected release, strengthen base station sub-system to said source and send the base station subsystem context request, ask said source to strengthen base station sub-system and upload said base station subsystem context.
6. like claim 4 or 5 described base station subsystem context method for down loading; It is characterized in that said message of carrying base station subsystem context comprises: upload the base station subsystem context request message, upload base station subsystem context response message or SRNS Serving Radio Network Subsystem context response information;
The said base station subsystem context request message of uploading comprises: upload base station subsystem context request message or SRNS Serving Radio Network Subsystem context request message.
7. a base station subsystem context method for down loading is characterized in that, comprising:
Send the base station subsystem context request to GPRS serving GPRS support node or mobile management entity; Base station subsystem context is downloaded in request; Said base station subsystem context is relevant with specific mobile station MS; Comprise protocol entity and recover needed information; Said base station subsystem context is that the source strengthens base station subsystem context, and said base station sub-system is the enhancing base station sub-system in the professional EDGE wireless access network of global system for mobile communications GSM/ enhancement mode GSM evolution data, said protocol entity for from the GPRS serving GPRS support node, move down into said base station sub-system with eat dishes without rice or wine relevant protocol entity;
Receive the message of carrying said base station subsystem context that said GPRS serving GPRS support node or mobile management entity send;
From said message of carrying said base station subsystem context, obtain said base station subsystem context.
8. base station subsystem context method for down loading as claimed in claim 7 is characterized in that, also comprises:
Before sending the base station subsystem context request, the frame of cell update is carried out in the requirement that receiving mobile sends; When not having the corresponding base station subsystem context, the said frame of buffer memory;
After getting access to said base station subsystem context, resolve said frame according to said base station subsystem context, accomplish the cell update flow process.
9. base station subsystem context method for down loading as claimed in claim 7 is characterized in that, also comprises:
Before sending the base station subsystem context request, the Routing Area Update request message that receiving mobile sends;
After getting access to said base station subsystem context, recover the related protocol entity according to said base station subsystem context, accomplish Routing Area Update.
10. like claim 7,8 or 9 described base station subsystem context method for down loading, it is characterized in that, also comprise:
After getting access to said base station subsystem context,, know that the source strengthens the position of base station sub-system according to the sign of the base station sub-system in the said base station subsystem context; Strengthen base station sub-system to said source and obtain the data that wireless chain control layer is not received affirmation.
11. like claim 7,8 or 9 described base station subsystem context method for down loading; It is characterized in that said message of carrying base station subsystem context comprises: download base station subsystem context response message or SRNS Serving Radio Network Subsystem context response information.
12. a base station sub-system is characterized in that, comprising:
Structural unit; Be used to construct the message of carrying base station subsystem context; Said base station subsystem context is relevant with specific mobile station MS; Comprise protocol entity and recover needed information, said base station sub-system is the enhancing base station sub-system in the professional EDGE wireless access network of global system for mobile communications GSM/ enhancement mode GSM evolution data, said protocol entity for from the GPRS serving GPRS support node, move down into said base station sub-system with eat dishes without rice or wine relevant protocol entity;
First transmitting element; Be used for sending said message of carrying base station subsystem context, supply said GPRS serving GPRS support node or mobile management entity to obtain and preserve said base station subsystem context to GPRS serving GPRS support node or mobile management entity.
13. base station sub-system as claimed in claim 12 is characterized in that, said first transmitting element comprises:
Second transmitting element is used for sending the message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity at the fixed time; Or,
The 3rd transmitting element after base station subsystem context refreshes, sends the message of carrying base station subsystem context to the GPRS serving GPRS support node; Or,
The 4th transmitting element; Be used for before the packet domain signaling with said GPRS serving GPRS support node or mobile management entity is connected release, send the message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity; Or,
The 5th transmitting element; Be used for after the base station subsystem context request message that receives the transmission of said GPRS serving GPRS support node or mobile management entity, send the message of carrying base station subsystem context to GPRS serving GPRS support node or mobile management entity.
14. like claim 12 or 13 described base station sub-systems, it is characterized in that, also comprise:
Tag unit is used for that the base station sub-system sign is placed on said base station subsystem context and sends to said GPRS serving GPRS support node.
15. a context management device is characterized in that, comprising:
The source receiving element is used for reception sources and strengthens the message of carrying base station subsystem context that base station sub-system is sent; Preserve the base station subsystem context that wherein carries; Said base station subsystem context is relevant with specific mobile station MS; Comprise protocol entity and recover needed information; Said base station subsystem context is that the source strengthens base station subsystem context; Said base station sub-system is the enhancing base station sub-system in the professional EDGE wireless access network of global system for mobile communications GSM/ enhancement mode GSM evolution data, said protocol entity for from the GPRS serving GPRS support node, move down into said base station sub-system with eat dishes without rice or wine relevant protocol entity;
The target receiving element is used for receiving target and strengthens the base station subsystem context request that base station sub-system is sent;
The 6th transmitting element is used for after receiving that target strengthens the base station subsystem context request of base station sub-system transmission, strengthening base station sub-system to said target and sending the message of carrying said base station subsystem context.
16. context management device as claimed in claim 15 is characterized in that, also comprises:
The 7th transmitting element; Be used for after receiving said base station subsystem context request; Be connected with packet domain that said source strengthens base station sub-system when existing; Strengthen base station sub-system to said source and send the base station subsystem context request, ask said source to strengthen base station sub-system and upload said base station subsystem context;
Or,
The 8th transmitting element is used for strengthening base station sub-system to said source at the fixed time and sends the base station subsystem context request, asks said source to strengthen base station sub-system and uploads said base station subsystem context; Or,
The 9th transmitting element is used for before the packet domain with said source enhancing base station sub-system is connected release, strengthens base station sub-system to said source and sending the base station subsystem context request, asks said source to strengthen base station sub-system and uploads said base station subsystem context.
17. a base station sub-system is characterized in that, comprising:
The 11 transmitting element; Be used for sending the base station subsystem context request to GPRS serving GPRS support node or mobile management entity; Base station subsystem context is downloaded in request; Said base station subsystem context is relevant with specific mobile station MS; Comprise protocol entity and recover needed information; Said base station subsystem context is that the source strengthens base station subsystem context, and said base station sub-system is the enhancing base station sub-system in the professional EDGE wireless access network of global system for mobile communications GSM/ enhancement mode GSM evolution data, said protocol entity for from the GPRS serving GPRS support node, move down into said base station sub-system with eat dishes without rice or wine relevant protocol entity;
Second receiving element is used to receive the message of carrying said base station subsystem context that said GPRS serving GPRS support node or mobile management entity send;
First acquiring unit is used for obtaining said base station subsystem context from said message of carrying said base station subsystem context.
18. base station sub-system as claimed in claim 17 is characterized in that, also comprises:
The 3rd receiving element was used for before sending the base station subsystem context request, and the frame of cell update is carried out in the requirement that receiving mobile sends;
Buffer unit is used for when not having the corresponding base station subsystem context, the said frame of buffer memory;
Resolution unit is used for after getting access to said base station subsystem context, resolving said frame according to said base station subsystem context, accomplishes the cell update flow process.
19. base station sub-system as claimed in claim 17 is characterized in that, also comprises:
The 4th receiving element was used for before sending the base station subsystem context request Routing Area Update request message that receiving mobile sends;
Recovery unit is used for after getting access to said base station subsystem context, recovers the related protocol entity according to said base station subsystem context, accomplishes Routing Area Update.
20. like claim 17,18 or 19 described base station sub-systems, it is characterized in that, also comprise:
Data capture unit is used for after getting access to said base station subsystem context, according to the sign of the base station sub-system in the said base station subsystem context, knows that the source strengthens the position of base station sub-system; Strengthen base station sub-system to said source and obtain the data that wireless chain control layer is not received affirmation.
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