CN102984756A - Downlink signaling message flow processing method and system - Google Patents
Downlink signaling message flow processing method and system Download PDFInfo
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- CN102984756A CN102984756A CN2012104487559A CN201210448755A CN102984756A CN 102984756 A CN102984756 A CN 102984756A CN 2012104487559 A CN2012104487559 A CN 2012104487559A CN 201210448755 A CN201210448755 A CN 201210448755A CN 102984756 A CN102984756 A CN 102984756A
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Abstract
The invention discloses a downlink signaling message flow processing method and a system, so that the problems that in the prior art, packet gate way (PGW) is large in flow processing difficulty, signaling interaction between network elements is frequent, and information processing flows are complex are solved. The method comprises the following steps: after the PGW receives internet protocol (IP) connecting visit network conversation modification request messages sent by a policy and charging rules function (PCRF) network element, and sends downlink signaling request messages to a signal gate way (SGW); after the SGW receives the downlink signaling request messages, and when user experience (UE) position information changes, the SGW stores the current UE position information and sends downlink signaling response massages carrying with the current UE position information to the PGW; after the PGW receives the downlink signaling response massages, the PGW sends IP connecting visit network conversation modification response messages not carrying with the current UE position information to the PCRF network element; and the PGW sends the current UE position information to the PCRF network element. According to the downlink signaling message flow processing method and the system, PGW processing difficulty is reduced, and downlink signaling massage flow processing is simplified.
Description
Technical field
The embodiment of the invention relates to communication technical field, particularly relates to a kind of downlink signaling message flow processing method and system.
Background technology
In 3GPP 23401 agreements, the service request flow process that network side triggers is: gateway (Serving Gateway, SGW) receive packet data gateway (Packet Data Network Gateway, PGW) the downlink signaling request message of sending, as create the dedicated bearer request message or revise dedicated bearer request message etc., SGW will notify Mobility Management Entity (Mobility Management Entity, MME) or GPRS serving GPRS support node (Serving GPRS Support Node, SGSN) send the downlink signaling request message to subscriber equipment (User Equipment, UE).If UE is in evolved packet system connectivity management (Evolved Packet System Connectivity Management, ECM) idle condition, MME or SGSN can trigger paging to UE, and UE initiates the service request flow process and revises carrying afterwards.In the service request flow process, the position changes if SGW judges UE, need to initiate to revise bearing request message to PGW, and the current location of UE is sent to PGW.
Therefore, for PGW, when PGW initiates to create, upgrades or deletes the dedicated bearer request, if the position of UE changes, may nested modification bearing request message obtain the current new position of UE, and then process the flow process of establishment, renewal or the request of deletion dedicated bearer that PGW issues.To create the dedicated bearer request as example, the idiographic flow of realization as shown in Figure 1.
Above-mentioned flow process specifically describes: 1. strategy and charging rule functions (Policy and Charging Rules Function, PCRF) network element is initiated IP connected reference BlueDrama and is revised request, carry strategy and charging control (policy and charging control, PCC) rule to PGW; 2. PGW binds by dedicated bearer, preserves the PCC Rule Information and creates the dedicated bearer example, sends dedicated bearer request to create message to SGW, and PGW arranges current flow process for creating, upgrade or deletion dedicated bearer request flow process simultaneously; If the UE position that 3. relates to changes, SGW sends to PGW and revises bearing request message; 4. PGW process to revise bearing request message, and current flow process is revised as switching flow, and the event that changes to PCRF reported by network elements UE positional information; 5. PGW sends to SGW and revises bearing response message; 6. SGW sends dedicated bearer to PGW and creates response message; 7. PGW revises request to PCRF response IP connected reference BlueDrama.
In the above-mentioned flow process, PGW needs frequent change flow and flow process is controlled, and has increased the difficulty of PGW to flow processing.
In addition, because processing, PGW revises bearing request message, after needing also to further consider that the UE position changes, the PCC rule that the PCRF network element issues may also change thereupon, inconsistent with the PCC rule that creates before, upgrades or delete the dedicated bearer request, also increase the difficulty of PGW on follow-up flow processing.
And PGW can't distinguish that its inner normal flow is switched and be above-mentioned because the flow process switching that paging triggers has also increased the difficulty when PGW processes inner normal flow switching.
And in the service request flow process that network side triggers, Signalling exchange is frequent between MME, the SGW in evolution block core (Evolved Packet Core, the EPC) network, PGW, the PCRF network element, and the flow process of processing messages is complicated.
Summary of the invention
The present invention discloses a kind of downlink signaling message flow processing method and system, and is large to the flow process intractability to solve in the prior art PGW, and in the service request flow process that triggers of network side between the network element Signalling exchange frequent, the problem of the flow process complexity of processing messages.
In order to address the above problem, the embodiment of the invention discloses a kind of downlink signaling message flow processing method, comprising:
Packet data gateway sends the downlink signaling request message to gateway after receiving the IP connected reference BlueDrama modify request messages of strategy and the transmission of charging rule functions network element;
After gateway receives described downlink signaling request message, when position information of user equipment changes, described gateway is preserved current position information of user equipment, and to described packet data gateway transmission downlink signaling response message, carry described current position information of user equipment in the described downlink signaling response message;
After described packet data gateway receives described downlink signaling response message, send the IP connected reference BlueDrama do not carry described current position information of user equipment and revise response message to described strategy and charging rule functions network element;
Described packet data gateway sends described current position information of user equipment to described strategy and charging rule functions network element.
Preferably, described gateway sends before the downlink signaling response message to described packet data gateway, also comprises:
The modification bearing request message that described gateway receiving mobility management entity or GPRS serving GPRS support node are sent;
When described modification bearing request message equipment for indicating user positional information changed, described gateway was preserved current position information of user equipment.
Preferably, after the modification bearing request message that described gateway receiving mobility management entity or GPRS serving GPRS support node are sent, also comprise:
Described gateway generates according to described modification bearing request message and revises bearing response message, and sends to described Mobility Management Entity or GPRS serving GPRS support node.
Preferably, described gateway receives after the described downlink signaling request message, also comprises:
Described gateway sends described downlink signaling request message to described Mobility Management Entity or GPRS serving GPRS support node.
Preferably, described gateway sends before the downlink signaling response message to described packet data gateway, also comprises:
Described gateway receives that described Mobility Management Entity or GPRS serving GPRS support node send does not carry the downlink signaling response message of described current position information of user equipment.
Preferably: described downlink signaling request message comprises:
Create, upgrade or deletion dedicated bearer request message.
The embodiment of the invention also discloses a kind of downlink signaling message flow treatment system, comprise strategy and charging rule functions network element, packet data gateway and gateway:
Wherein, strategy and charging rule functions network element are used for sending IP connected reference BlueDrama modify request messages to packet data gateway;
Packet data gateway is used for receiving described IP connected reference BlueDrama modify request messages, and sends the downlink signaling request message to gateway;
Gateway, be used for when position information of user equipment changes, preserve current position information of user equipment, and send the downlink signaling response message to described packet data gateway, carry described current position information of user equipment in the described downlink signaling response message;
Described packet data gateway also be used for to send the IP connected reference BlueDrama that does not carry described current position information of user equipment and revises response message to described strategy and charging rule functions network element;
Described packet data gateway also is used for sending described current position information of user equipment to described strategy and charging rule functions network element.
Preferably: described gateway sends to described packet data gateway before the downlink signaling response message, the modification bearing request message that receiving mobility management entity or GPRS serving GPRS support node are sent;
When described modification bearing request message equipment for indicating user positional information changed, described gateway was preserved current position information of user equipment.
Preferably: described gateway generates according to described modification bearing request message and revises bearing response message, and sends to described Mobility Management Entity or GPRS serving GPRS support node.
Preferably: described gateway sends described downlink signaling request message to described Mobility Management Entity or GPRS serving GPRS support node.
Preferably: described gateway receives that described Mobility Management Entity or GPRS serving GPRS support node send does not carry the downlink signaling response message of described current position information of user equipment.
Compared with prior art, the present invention includes following advantage:
After SGW receives the downlink signaling request message, when judging that the UE positional information changes, SGW preserves the UE positional information, directly sends to revise bearing response message to MME or SGSN, will not revise bearing request message and be sent to PGW, PGW does not need to process revising bearing request message.
Simultaneously, after SGW receives the downlink signaling request message, if the UE positional information changes, the downlink signaling response message that SGW will carry the UE current location information is sent to PGW, PGW sets up downlink signaling message according to the downlink signaling response message and connects, and does not temporarily send the UE positional information to the PCRF network element, does not need to change current flow process and adjusts state machine, after PGW carried out inside renewal operation, the positional information that UE is current was sent to the PCRF network element.
In whole downlink signaling message flow processing procedure, PGW does not need to process the modification bearing request message, has reduced the difficulty that PGW processes, and has reduced the Signalling exchange between MME, SGW, PGW, the PCRF network element yet, has simplified the processing of downlink signaling message flow.
Description of drawings
Fig. 1 creates dedicated bearer request schematic flow sheet in the background technology;
Fig. 2 is the embodiment of the invention one disclosed a kind of downlink signaling message flow process flow figure;
Fig. 3 is the embodiment of the invention two disclosed a kind of downlink signaling message flow process flow figure;
Fig. 4 is the embodiment of the invention three disclosed a kind of downlink signaling message flow processing method schematic diagrames;
Fig. 5 is the embodiment of the invention four disclosed a kind of downlink signaling message flow treatment system structure charts;
Fig. 6 is the embodiment of the invention five disclosed a kind of downlink signaling message flow treatment system structure charts.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The invention discloses a kind of downlink signaling message flow processing method and system, in the downlink signaling message request flow process that network side is initiated, SGW does not send to PGW and revises the downlink signaling request message, then PGW does not need to process modification downlink signaling request message, do not need switching flow and the setting of change state machine, reduce on the whole the Signalling exchange between the network element, reduced the difficulty that the downlink signaling message flow is processed.
Introduce in detail a kind of downlink signaling message flow processing method disclosed by the invention and system below by enumerating several specific embodiments.
Embodiment one
Introduce in detail the disclosed a kind of downlink signaling message flow processing method of the embodiment of the invention.
With reference to Fig. 2, show the embodiment of the invention one disclosed a kind of downlink signaling message flow process flow figure.
Step S11, packet data gateway send the downlink signaling request message to gateway after receiving the IP connected reference BlueDrama modify request messages of strategy and the transmission of charging rule functions network element.
The PCRF network element sends IP-CAN session modification request message to PGW, and carry the PCC rule to above-mentioned PGW, above-mentioned PGW preserves above-mentioned PCC rule and sends the downlink signaling request message to SGW, state machine is set sends the downlink signaling response message for waiting for above-mentioned SGW.
After step S12, gateway received above-mentioned downlink signaling request message, when position information of user equipment changed, above-mentioned gateway was preserved current position information of user equipment, and sent the downlink signaling response message to above-mentioned packet data gateway.
After SGW received above-mentioned downlink signaling request message, if UE is in the ECM-IDLE state, (ECM-IDLE was the idle condition of UE, is present among UE and the MME.UE under this state possesses the IP linkage function, but direct transceiving data.To send to the IP packet to UE if having, need first UE to be done paging.) MME or SGSN trigger paging to UE, UE initiates the service request flow process afterwards.In the service request flow process, when above-mentioned SGW judged that the UE positional information changes, above-mentioned SGW preserved current UE positional information, and namely above-mentioned SGW preserves the UE positional information after changing, and sends the downlink signaling response message to above-mentioned PGW.
Carry above-mentioned current position information of user equipment in the above-mentioned downlink signaling response message, namely carry the UE positional information after the change in the above-mentioned downlink signaling response message.
After step S13, above-mentioned packet data gateway receive above-mentioned downlink signaling response message, send the IP connected reference BlueDrama do not carry above-mentioned current position information of user equipment and revise response message to above-mentioned strategy and charging rule functions network element.
After above-mentioned PGW receives above-mentioned downlink signaling response message, above-mentioned PGW send do not carry above-mentioned current UE positional information IP-CAN session modification response message to above-mentioned PCRF network element.
Step S14, above-mentioned packet data gateway send above-mentioned current position information of user equipment to above-mentioned strategy and charging rule functions network element.
Above-mentioned PGW is sent to above-mentioned PCRF network element with above-mentioned current UE positional information.Above-mentioned PGW can change event charging control request (Charging Control Request by sending the UE positional information, CCR) message is to the PCRF network element, report the UE positional information to change, and with current UE positional information, the UE positional information after namely changing is sent to the PCRF network element.
Embodiment two
Introduce in detail the disclosed a kind of downlink signaling message flow processing method of the embodiment of the invention.
With reference to Fig. 3, show the embodiment of the invention two disclosed a kind of downlink signaling message flow process flow figure.
The downlink signaling request message specifically can comprise:
Create, upgrade or deletion dedicated bearer request message.
Dedicated bearer is a kind of carrying.Carrying refers to guarantee into service quality (Qualirt of Service, the QoS) transmission that certain specific character is provided between UE and Packet Data Network (Packet Data Network, PDN), is divided into default bearing and dedicated bearer.
Dedicated bearer is to set up on the basis that the PDN link is set up, and sets up for certain specific QoS transmission demand is provided (default bearing can't satisfy).The QoS of dedicated bearer is higher than the qos requirement of default bearing generally speaking.
Present embodiment two is introduced a kind of downlink signaling message flow processing method disclosed by the invention in detail to create the dedicated bearer request message as example.When descending signaling request message was renewal or deletion dedicated bearer request message, the main or committed step in a kind of downlink signaling message flow processing method disclosed by the invention can be with reference to the correlation step of the embodiment of the invention two.
Step S21, packet data gateway send the downlink signaling request message to gateway after receiving the IP connected reference BlueDrama modify request messages of strategy and the transmission of charging rule functions network element.
If create and disposed dynamic PCC rule in the dedicated bearer request message, the PCRF network element is initiated IP-CAN session modification flow process, above-mentioned PCRF network element sends IP-CAN session modification request message to PGW, above-mentioned PGW passes through bearing binding, preserve the PCC rule, and create the dedicated bearer example, send to SGW and create the dedicated bearer request message, simultaneously, above-mentioned PGW arranges state machine and sends the downlink signaling response message for waiting for above-mentioned SGW.
Be described as about a kind of of state machine: state machine is a directed graph, is comprised of a group node and one group of corresponding transfer function.State machine is " RUN " by the response sequence of events.Each event is in the control range of the transfer function that belongs to " current " node, and wherein, the control range of transfer function is a subset of node.The every " RUN " of state machine once, transfer function returns a node, (can be " current " node, also can be " next one " node).Have at least one to be the final state node in the node that transfer function returns, when returning the final state node, state machine stops.
When above-mentioned PGW received the downlink signaling response message of above-mentioned SGW transmission, the state machine of above-mentioned PGW stopped.
Step S22, above-mentioned gateway send above-mentioned downlink signaling request message to Mobility Management Entity or GPRS serving GPRS support node.
Above-mentioned SGW sends above-mentioned establishment dedicated bearer request message to MME or SGSN.
Above-mentioned SGW can be sent to MME or SGSN with the establishment dedicated bearer request message that receives among the step S21.
Step S23, the modification bearing request message that above-mentioned gateway receiving mobility management entity or GPRS serving GPRS support node are sent.
If UE is in the ECM-IDLE state, above-mentioned MME or SGSN trigger paging to above-mentioned UE, and afterwards, above-mentioned UE initiates the service request flow process, above-mentioned UE sends the modification bearing request message to above-mentioned MME or SGSN, and above-mentioned MME or SGSN are sent to above-mentioned SGW with above-mentioned modification bearing request message.
Step S24, when above-mentioned modification bearing request message equipment for indicating user positional information changed, above-mentioned gateway was preserved current position information of user equipment.
When above-mentioned SGW receives above-mentioned modification bearing request message, and judge that above-mentioned SGW preserved current UE positional information when wherein UE positional information changed, namely above-mentioned SGW preserves the UE positional information after the change.
Step S25, above-mentioned gateway generate according to above-mentioned modification bearing request message and revise bearing response message, and send to above-mentioned Mobility Management Entity or GPRS serving GPRS support node.
After above-mentioned SGW receives above-mentioned modification bearing request message, can generate according to above-mentioned modification bearing request message and revise bearing response message, and above-mentioned modification bearing response message is sent to above-mentioned MME or SGSN responds.
Step S26, above-mentioned gateway receive that above-mentioned Mobility Management Entity or GPRS serving GPRS support node send does not carry the downlink signaling response message of above-mentioned current position information of user equipment.
After the above-mentioned modification dedicated bearer response message that above-mentioned MME or SGSN will receive was sent to above-mentioned UE, the service request flow process that above-mentioned UE initiates finished.Then, above-mentioned UE can by above-mentioned MME or SGSN send step by step do not carry above-mentioned current UE positional information establishment dedicated bearer response message to above-mentioned SGW.
Step S27, above-mentioned gateway send the downlink signaling response message that carries current position information of user equipment to above-mentioned packet data gateway.
After above-mentioned SGW receives the above-mentioned establishment dedicated bearer response message that does not carry above-mentioned current UE positional information, the above-mentioned current UE positional information of preserving before can carrying in the above-mentioned establishment dedicated bearer response message that does not carry above-mentioned current UE positional information is sent to above-mentioned PGW with the above-mentioned establishment dedicated bearer response message that carries above-mentioned current UE positional information.
Step S28, after above-mentioned packet data gateway receives the above-mentioned downlink signaling response message that carries current position information of user equipment, send the IP connected reference BlueDrama that does not carry above-mentioned current position information of user equipment and revise response message to above-mentioned strategy and charging rule functions network element.
After above-mentioned PGW receives the above-mentioned establishment dedicated bearer response message that carries above-mentioned current UE positional information, send the IP-CAN session modification response message that does not carry above-mentioned current UE positional information to above-mentioned PCRF network element, and the state machine that above-mentioned PGW arranges stops in step S21.
Above-mentioned PCRF network element can be finished the request flow process that creates dedicated bearer according to the above-mentioned IP that receives-CAN session modification response message.
And the UE positional information that above-mentioned PGW can also be inner with it is upgraded, and being about to the front UE updating location information of its inner change of preserving or using is above-mentioned current UE positional information.
Step S29, above-mentioned packet data gateway send above-mentioned current position information of user equipment to above-mentioned strategy and charging rule functions network element.
Above-mentioned PGW can the UE updating location information in step S28 after, above-mentioned current UE positional information is sent to above-mentioned PCRF network element.
Above-mentioned PGW also can change event CCR message to above-mentioned PCRG network element by sending the UE positional information, reports the UE positional information to change.Above-mentioned UE positional information changes in the event CCR message can comprise above-mentioned current UE positional information.
Embodiment three
Introduce in detail the disclosed a kind of downlink signaling message flow processing method of the embodiment of the invention.
With reference to Fig. 4, show the embodiment of the invention three disclosed a kind of downlink signaling message flow processing method schematic diagrames.
Step S31, the PCRF network element is initiated IP-CAN session mod request to PGW.
Step S32, above-mentioned PGW send Creat Bearer Req message according to above-mentioned IP-CAN session mod request to SGW.
Step S33, above-mentioned SGW send the Creat Bearer Rsp message of carrying the UE positional information to above-mentioned PGW.
Before above-mentioned steps S33, above-mentioned SGW can also receive that MME or SGSN send Modify Bearer Req message, and responds Modify Bearer Rsp message to MME or SGSN.
Step S34, above-mentioned PGW respond above-mentioned IP-CAN session mod request according to above-mentioned Creat Bearer Rsp message of carrying the UE positional information to above-mentioned PCRF network element.
Step S35, above-mentioned PGW is inner to be upgraded.
Inner renewal can refer to that above-mentioned PGW preserves its inside or the UE positional information of participation operation is upgraded, and can be new UE positional information with old UE updating location information namely.
Step S36, above-mentioned PGW initiate to revise the IP-CANsession mod request of UE positional information event to above-mentioned PCRF.
In sum, the embodiment of the invention one to three disclosed a kind of downlink signaling message flow processing method compared with prior art, has the following advantages:
After SGW receives the downlink signaling request message, when judging that the UE positional information changes, SGW preserves the UE positional information, directly sends to revise bearing response message to MME or SGSN, will not revise bearing request message and be sent to PGW, PGW does not need to process revising bearing request message.
Simultaneously, after SGW receives the downlink signaling request message, if the UE positional information changes, the downlink signaling response message that SGW will carry the UE current location information is sent to PGW, PGW sets up downlink signaling message according to the downlink signaling response message and connects, and does not temporarily send the UE positional information to the PCRF network element, does not need to change current flow process and adjusts state machine, after PGW carried out inside renewal operation, the positional information that UE is current was sent to the PCRF network element.
In whole downlink signaling message flow processing procedure, PGW does not need to process the modification bearing request message, has reduced the difficulty that PGW processes, and has reduced the Signalling exchange between MME, SGW, PGW, the PCRF network element yet, has simplified the processing of downlink signaling message flow.
And in whole downlink signaling message flow processing procedure, PGW only need to control a kind of flow process, and this flow process can be for creating, upgrade or deletion dedicated bearer flow process; After SGW sends the downlink signaling request message, its state machine is set to wait for that SGW sends the downlink signaling response message, until receive the downlink signaling response message that SGW sends, the state machine of PGW is kept same state always, so, PGW has reduced switching and the control of flow process, has also cut down the adjustment number of times of its state machine simultaneously, reduces on the whole the difficulty that PGW processes the downlink signaling message flow.
Embodiment four
Introduce in detail the disclosed a kind of downlink signaling message flow treatment system of the embodiment of the invention.
With reference to Fig. 5, show the embodiment of the invention four disclosed a kind of downlink signaling message flow treatment system structure charts.
Above-mentioned a kind of downlink signaling message flow treatment system specifically can comprise:
Strategy and charging rule functions network element 41, packet data gateway 42, and, gateway 43.
The below introduce in detail respectively each gateway and network element function and between relation.
Strategy and charging rule functions network element 41 are used for sending IP connected reference BlueDrama modify request messages to packet data gateway.
Above-mentioned PCRF network element 41 sends IP-CAN session modification request message to PGW42, and carries the PCC rule to above-mentioned PGW42.
Packet data gateway 42 is used for receiving above-mentioned IP connected reference BlueDrama modify request messages, and sends the downlink signaling request message to gateway.
Above-mentioned PGW42 receives above-mentioned IP-CAN session modification request message, and preserves above-mentioned PCC rule and send the downlink signaling request message to SGW43, state machine is set sends the downlink signaling response message for waiting for above-mentioned SGW43.
Gateway 43, be used for when position information of user equipment changes, preserve current position information of user equipment, and send the downlink signaling response message to above-mentioned packet data gateway, carry above-mentioned current position information of user equipment in the above-mentioned downlink signaling response message.
After above-mentioned SGW43 receives above-mentioned downlink signaling request message, if UE is in the ECM-IDLE state, in the service request flow process that UE initiates, when above-mentioned SGW43 judges that the UE positional information changes, above-mentioned SGW43 preserves current UE positional information, and sends the downlink signaling response message to above-mentioned PGW42.
Carry above-mentioned current position information of user equipment in the above-mentioned downlink signaling response message, namely carry the UE positional information after the change in the above-mentioned downlink signaling response message.
Above-mentioned packet data gateway 42 also be used for to send the IP connected reference BlueDrama that does not carry above-mentioned current position information of user equipment and revises response message to above-mentioned strategy and charging rule functions network element.
After above-mentioned PGW42 receives above-mentioned downlink signaling response message, above-mentioned PGW42 send do not carry above-mentioned current UE positional information IP-CAN session modification response message to above-mentioned PCRF network element 41.
Above-mentioned packet data gateway 42 also is used for sending above-mentioned current position information of user equipment to above-mentioned strategy and charging rule functions network element.
Above-mentioned PGW42 is sent to above-mentioned PCRF network element 41 with above-mentioned current UE positional information.Above-mentioned PGW42 can change event CCR message to PCRF network element 41 by sending the UE positional information, reports the UE positional information to change, and with current UE positional information, is sent to PCRF network element 41.
Embodiment five
Introduce in detail the disclosed a kind of downlink signaling message flow treatment system of the embodiment of the invention.
With reference to Fig. 6, show the embodiment of the invention five disclosed a kind of downlink signaling message flow treatment system structure charts.
Above-mentioned a kind of downlink signaling message flow treatment system specifically can comprise:
Strategy and charging rule functions network element 51, packet data gateway 52, gateway 53, and, Mobility Management Entity or GPRS serving GPRS support node 54.
The below introduce in detail respectively each equipment or device function and between relation.
Strategy and charging rule functions network element 51 are used for sending IP connected reference BlueDrama modify request messages to packet data gateway.
Above-mentioned PCRF network element 51 sends IP-CAN session modification request message to PGW52, and carries the PCC rule to above-mentioned PGW52.
Packet data gateway 52 is used for receiving above-mentioned IP connected reference BlueDrama modify request messages, and sends the downlink signaling request message to gateway.
Above-mentioned PGW52 receives above-mentioned IP-CAN session modification request message, and preserves above-mentioned PCC rule and send the downlink signaling request message to SGW53.
The downlink signaling request message specifically can comprise:
Create, upgrade or deletion dedicated bearer request message.
For example, above-mentioned PGW52 receives above-mentioned IP-CAN session modification request message, and preserves above-mentioned PCC rule and send establishment dedicated bearer request message to SGW53.
Gateway 53, be used for when position information of user equipment changes, preserve current position information of user equipment, and send the downlink signaling response message to above-mentioned packet data gateway, carry above-mentioned current position information of user equipment in the above-mentioned downlink signaling response message.
When above-mentioned SGW53 changes when the UE positional information, preserve current UE positional information, and send the downlink signaling response message to above-mentioned PGW52.
Above-mentioned gateway 53 sends to above-mentioned packet data gateway before the downlink signaling response message, the modification bearing request message that receiving mobility management entity or GPRS serving GPRS support node are sent.
When above-mentioned modification bearing request message equipment for indicating user positional information changed, above-mentioned gateway 43 was preserved current position information of user equipment.
If UE is in the ECM-IDLE state, above-mentioned SGW53 sends to above-mentioned PGW52 before the downlink signaling response message, receives the modification bearing request message that MME or SGSN send.
When above-mentioned SGW53 judged that the UE positional information changes, above-mentioned SGW53 preserved current UE positional information.
Above-mentioned gateway 53 generates according to above-mentioned modification bearing request message and revises bearing response message, and sends to above-mentioned Mobility Management Entity or GPRS serving GPRS support node.
Above-mentioned SGW can generate according to above-mentioned modification bearing request message and revise bearing response message, and above-mentioned modification bearing response message is sent to above-mentioned MME or SGSN54 responds.
Above-mentioned gateway 53 sends above-mentioned downlink signaling request message to above-mentioned Mobility Management Entity or GPRS serving GPRS support node.
Above-mentioned SGW53 is sent to above-mentioned MME or SGSN54 with above-mentioned downlink signaling request message after receiving the downlink signaling request message that above-mentioned PGW sends.
Above-mentioned gateway 53 receives that above-mentioned Mobility Management Entity or GPRS serving GPRS support node send does not carry the downlink signaling response message of above-mentioned current position information of user equipment.
After the above-mentioned modification dedicated bearer response message that above-mentioned MME or SGSN54 will receive was sent to above-mentioned UE, above-mentioned SGW53 receives that above-mentioned MME or SGSN54 send did not carry the downlink signaling response message of above-mentioned current UE positional information.
Above-mentioned packet data gateway 52 also be used for to send the IP connected reference BlueDrama that does not carry above-mentioned current position information of user equipment and revises response message to above-mentioned strategy and charging rule functions network element.
After above-mentioned PGW52 receives the above-mentioned downlink signaling response message that carries above-mentioned current UE positional information, send do not carry above-mentioned current UE positional information IP-CAN session modification response message to PCRF network element 51.
Above-mentioned packet data gateway 52 also is used for sending above-mentioned current position information of user equipment to above-mentioned strategy and charging rule functions network element.
Above-mentioned PGW52 can also change event CCR message to above-mentioned PCRG network element 51 by sending the UE positional information, reports the UE positional information to change.Above-mentioned UE positional information changes in the event CCR message can comprise above-mentioned current UE positional information.
Mobility Management Entity or GPRS serving GPRS support node 54 can be used for the information transmission etc. between above-mentioned UE and the above-mentioned SGW53.
In sum, the embodiment of the invention four to five disclosed a kind of downlink signaling message flow treatment systems compared with prior art, have the following advantages:
After SGW receives the downlink signaling request message, when judging that the UE positional information changes, SGW preserves the UE positional information, directly sends to revise bearing response message to MME or SGSN, will not revise bearing request message and be sent to PGW, PGW does not need to process revising bearing request message.
Simultaneously, after SGW receives the downlink signaling request message, if the UE positional information changes, the downlink signaling response message that SGW will carry the UE current location information is sent to PGW, PGW sets up downlink signaling message according to the downlink signaling response message and connects, and does not temporarily send the UE positional information to the PCRF network element, does not need to change current flow process and adjusts state machine, after PGW carried out inside renewal operation, the positional information that UE is current was sent to the PCRF network element.
In whole downlink signaling message flow processing procedure, PGW does not need to process the modification bearing request message, has reduced the difficulty that PGW processes, and has reduced the Signalling exchange between MME, SGW, PGW, the PCRF network element yet, has simplified the processing of downlink signaling message flow.
And in whole downlink signaling message flow processing procedure, PGW only need to control a kind of flow process, and this flow process can be for creating, upgrade or deletion dedicated bearer flow process; After SGW sends the downlink signaling request message, its state machine is set to wait for that SGW sends the downlink signaling response message, until receive the downlink signaling response message that SGW sends, the state machine of PGW is kept same state always, so, PGW has reduced switching and the control of flow process, has also cut down the adjustment number of times of its state machine simultaneously, reduces on the whole the difficulty that PGW processes the downlink signaling message flow.
For system embodiment because itself and embodiment of the method basic simlarity, so describe fairly simple, relevant part gets final product referring to the part explanation of embodiment of the method.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
More than to the disclosed a kind of downlink signaling message flow processing method of the embodiment of the invention and system, be described in detail, used specific case herein principle and the execution mode of the embodiment of the invention 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, the thought according to the embodiment of the invention all will change in specific embodiments and applications, and in sum, this description should not be construed as limitation of the present invention.
Claims (11)
1. a downlink signaling message flow processing method is characterized in that, comprising:
Packet data gateway sends the downlink signaling request message to gateway after receiving the IP connected reference BlueDrama modify request messages of strategy and the transmission of charging rule functions network element;
After gateway receives described downlink signaling request message, when position information of user equipment changes, described gateway is preserved current position information of user equipment, and to described packet data gateway transmission downlink signaling response message, carry described current position information of user equipment in the described downlink signaling response message;
After described packet data gateway receives described downlink signaling response message, send the IP connected reference BlueDrama do not carry described current position information of user equipment and revise response message to described strategy and charging rule functions network element;
Described packet data gateway sends described current position information of user equipment to described strategy and charging rule functions network element.
2. method according to claim 1 is characterized in that, described gateway sends before the downlink signaling response message to described packet data gateway, also comprises:
The modification bearing request message that described gateway receiving mobility management entity or GPRS serving GPRS support node are sent;
When described modification bearing request message equipment for indicating user positional information changed, described gateway was preserved current position information of user equipment.
3. method according to claim 2 is characterized in that, after the modification bearing request message that described gateway receiving mobility management entity or GPRS serving GPRS support node are sent, also comprises:
Described gateway generates according to described modification bearing request message and revises bearing response message, and sends to described Mobility Management Entity or GPRS serving GPRS support node.
4. method according to claim 1 is characterized in that, described gateway receives after the described downlink signaling request message, also comprises:
Described gateway sends described downlink signaling request message to described Mobility Management Entity or GPRS serving GPRS support node.
5. method according to claim 1 is characterized in that, described gateway sends before the downlink signaling response message to described packet data gateway, also comprises:
Described gateway receives that described Mobility Management Entity or GPRS serving GPRS support node send does not carry the downlink signaling response message of described current position information of user equipment.
6. method according to claim 1 is characterized in that:
Described downlink signaling request message comprises:
Create, upgrade or deletion dedicated bearer request message.
7. a downlink signaling message flow treatment system is characterized in that, comprises strategy and charging rule functions network element, packet data gateway and gateway:
Wherein, strategy and charging rule functions network element are used for sending IP connected reference BlueDrama modify request messages to packet data gateway;
Packet data gateway is used for receiving described IP connected reference BlueDrama modify request messages, and sends the downlink signaling request message to gateway;
Gateway, be used for when position information of user equipment changes, preserve current position information of user equipment, and send the downlink signaling response message to described packet data gateway, carry described current position information of user equipment in the described downlink signaling response message;
Described packet data gateway also be used for to send the IP connected reference BlueDrama that does not carry described current position information of user equipment and revises response message to described strategy and charging rule functions network element;
Described packet data gateway also is used for sending described current position information of user equipment to described strategy and charging rule functions network element.
8. system according to claim 7 is characterized in that:
Described gateway sends to described packet data gateway before the downlink signaling response message, the modification bearing request message that receiving mobility management entity or GPRS serving GPRS support node are sent;
When described modification bearing request message equipment for indicating user positional information changed, described gateway was preserved current position information of user equipment.
9. system according to claim 8 is characterized in that:
Described gateway generates according to described modification bearing request message and revises bearing response message, and sends to described Mobility Management Entity or GPRS serving GPRS support node.
10. system according to claim 7 is characterized in that:
Described gateway sends described downlink signaling request message to described Mobility Management Entity or GPRS serving GPRS support node.
11. system according to claim 7 is characterized in that:
Described gateway receives that described Mobility Management Entity or GPRS serving GPRS support node send does not carry the downlink signaling response message of described current position information of user equipment.
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| CN102984756B (en) | 2016-03-02 |
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