CN102892211A

CN102892211A - Traffic offloading method and mobile management entity

Info

Publication number: CN102892211A
Application number: CN2011102064199A
Authority: CN
Inventors: 关止; 高晨亮
Original assignee: Huawei Device Co Ltd
Current assignee: Global Innovation Polymerization LLC; Tanous Co
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2013-01-23
Anticipated expiration: 2031-07-22
Also published as: CN102892211B

Abstract

The invention provides a traffic offloading method and a mobile management entity, belonging to the technical field of communication. The method, provided by an embodiment of the invention, comprises the following steps of: receiving information which is sent by user equipment and means the agreement or disagreement of the establishment of a PDN (packet data network) connection of an SIPTO (selected Internet protocol traffic offload); judging whether a user agrees on carrying out an offloading traffic according to the received information; establishing the PDN connection of SIPTO for the user if the user agrees on carrying out the offloading traffic; and establishing the PDN connection at a network side for the user if the user disagrees on carrying out the offloading traffic. According to the embodiment provided by the invention, the user can participate in a route decision of the SIPTO offloading traffic, so that the user selects the operation of the offloading traffic or non-offloading traffic according to the specific situations of the current network, therefore the use efficiency and use experience can be improved when the user carries out traffics.

Description

A kind of professional discharging method, Mobility Management Entity

Technical field

The present invention relates to communication technical field, particularly a kind of professional discharging method, Mobility Management Entity.

Background technology

SIPTO (Selected Internet Protocol Traffic Offload, the professional unloading of the procotol of selecting) technology is based on H (e) NB (Home (enhanced) NodeB at first, home evolved node B) network proposes, its implication is that user's traffic data directly accesses from Home eNodeB, without the network side of operator.So just partial service can be shunted away, thereby alleviate load and the transmission cost of network side.

Existing H (e) NB can be linked into outside the mobile operator network side by H (e) NB terminal UE except possessing the macro base station all functions, can also direct local breakout point as IP operation.H in TR23.829 (e) NB mainly contains L-GW (Local Gate Way, local gateway) scheme and TOF (Traffic Offload Function, service distributing function) scheme as the network architecture of the SIPTO of outlet.In the existing L-GW scheme, the PDN (Packet Data Network, Packet Data Network) that sets up network side between network side and the UE connects; When network side detects UE (User Equipment, subscriber equipment) and has SIPTO unloading professional, initiate to set up one by network side again and be connected for the PDN of SIPTO unloading business with UE.And in the TOF scheme, the PDN that network side is only set up network side connects, and by TOF different business is carried out route, so that do not connect transmission by the PDN of network side for the professional data of SIPTO unloading.

Realize in the flow process of the present invention, the inventor finds that there is following problem at least in prior art:

In the prior art, SIPTO can by Home eNodeB H (e) NB from the network pressure of network side network unloading part IP operation (professional such as Internet) with reduction mobile operator, save transmission cost.When operator carries out unloading operation, if the network pressure of Home eNodeB is large at this moment, may affects the business of unloading, even cause and can't use, affect user's experience.

Summary of the invention

Operator directly unloads business in the prior art in order to solve, and experiences the problem that impacts to unloading business and user.The embodiment of the invention has proposed a kind of professional discharging method, Mobility Management Entity.Described technical scheme is as follows:

The embodiment of the invention has proposed a kind of professional discharging method, comprising:

Receive the agreement of subscriber equipment transmission or refuse to set up the information of the packet data network PDN connection of the professional SIPTO of unloading of procotol that selects;

If the information that receives is set up the information of the PDN connection of SIPTO for agreement, judge whether to begin to set up the PDN connection of SIPTO, set up if begun, then continue the PDN establishment of connection flow process of the SIPTO begun, and after finishing, foundation use the PDN of this SIPTO to connect the business that unloads, if do not begin to set up, then newly set up the PDN connection of SIPTO for described subscriber equipment, and after foundation is finished, use the PDN of this newly-established SIPTO to connect the business that unloads;

If the information that receives is set up the information of the PDN connection of SIPTO for refusal, judge whether to begin to set up the PDN connection of network side, set up if begun, then continue the PDN establishment of connection flow process of the network side begun, if do not begin to set up, then newly set up the PDN connection of network side for described subscriber equipment.

The embodiment of the invention has also proposed a kind of Mobility Management Entity, comprising:

Receiver, the information that the PDN that sets up SIPTO for agreement or the refusal of the transmission of reception subscriber equipment connects;

Judge module be used for to judge that the information that the PDN of the SIPTO that receiver receives connects is to agree, or the PDN that refusal is set up SIPTO connects;

The first processing module, if the information that is used for receiving is set up the information of the PDN connection of SIPTO for agreement, judge whether to begin to set up the PDN connection of SIPTO, set up if begun, then continue the PDN establishment of connection flow process of the SIPTO begun, and after finishing, foundation use the PDN of this SIPTO to connect the business that unloads, do not set up if begin, then newly set up the PDN connection of SIPTO for described subscriber equipment, and after foundation is finished, use the PDN of this newly-established SIPTO to connect the business that unloads;

The second processing module, if the information that is used for receiving is set up the information of the PDN connection of SIPTO for refusal, judge whether to begin to set up the PDN connection of network side, set up if begun, then continue the PDN establishment of connection flow process of the network side begun, if do not begin to set up, then newly set up the PDN connection of network side for described subscriber equipment.

The beneficial effect of the technical scheme that the embodiment of the invention provides is: in the embodiment of the invention, in the middle of the route decision that the user is participated in the professional unloading of SIPTO unloading, so that the user unloads the professional selection operation of professional or non-unloading, can improve service efficiency and the experience of customer service according to the concrete condition of current network.

Description of drawings

In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the below will do one to the accompanying drawing that uses among the embodiment and introduce simply, apparently, below listed accompanying drawing only be some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the schematic flow sheet of first embodiment of the invention;

Fig. 2 is the schematic flow sheet of the PDN that sets up first network side for the L-GW scheme in the second embodiment of the invention when connecting;

The schematic flow sheet that Fig. 3 connects for the PDN that disconnects network side;

Fig. 4 be in the second embodiment of the invention for the setting up first the professional PDN of SIPTO unloading and connect of TOF scheme the time schematic flow sheet;

Fig. 5 is that setting up first for SIPTO in the second embodiment of the invention unloads the schematic flow sheet that professional PDN connects;

The schematic flow sheet that Fig. 6 connects for the PDN that disconnects SIPTO;

Fig. 7 sets up the professional PDN of SIPTO unloading in the second embodiment of the invention time to connect schematic flow sheet when connecting with the PDN that is connected network side;

Fig. 8 is that the UE for the L-GW scheme uploads the user for the schematic flow sheet of the professional unloading principle of SIPTO unloading in the second embodiment of the invention;

Fig. 9 is that the UE for the TOF scheme uploads the user for the schematic flow sheet of the professional unloading principle of SIPTO unloading in the second embodiment of the invention;

Figure 10 is the structural representation of third embodiment of the invention;

Figure 11 is the structural representation of fourth embodiment of the invention.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.

Embodiment 1

First embodiment of the invention has proposed a kind of professional discharging method, and its flow process comprises as shown in Figure 1:

Step 101: receive the agreement of subscriber equipment transmission or refuse to set up the information of the packet data network PDN connection of the professional SIPTO of unloading of procotol that selects;

Step 102: if the information that receives is set up the information of the PDN connection of SIPTO for agreement, judge whether to begin to set up the PDN connection of SIPTO, set up if begun, then continue the PDN establishment of connection flow process of the SIPTO begun, and after finishing, foundation use the PDN of this SIPTO to connect the business that unloads, if do not begin to set up, then newly set up the PDN connection of SIPTO for described subscriber equipment, and after foundation is finished, use the PDN of this newly-established SIPTO to connect the business that unloads;

Step 103: if the information that receives is set up the information of the PDN connection of SIPTO for refusal, judge whether to begin to set up the PDN connection of network side, set up if begun, then continue the PDN establishment of connection flow process of the network side begun, if do not begin to set up, then newly set up the PDN connection of network side for described subscriber equipment.

In the embodiment of the invention, in the middle of the route decision that the user is participated in SIPTO unloading business,, can improve the user and carry out professional service efficiency and experience so that the user unloads the professional selection operation of professional or non-unloading according to the concrete condition of current network.

Embodiment 2

Second embodiment of the invention has proposed a kind of professional discharging method, is to improve on the basis of the first embodiment.

In second embodiment of the invention, can adopt various ways to send the SIPTO indication to UE, whether agree to set up the professional PDN connection of SIPTO unloading to obtain UE.That is:

Can according to network condition be connected the unloading strategy of the subscriber equipment stored first for the PDN that UE sets up network side connects, and whether HNB/TOF or MME agree to set up the professional PDN of SIPTO unloading to the UE inquiry and connect; This mode can be applied to existing L-GW scheme and TOF scheme.

Can also according to network condition be connected the unloading strategy of the subscriber equipment stored first for the PDN that UE sets up SIPTO connects, and whether MME agrees to set up the professional PDN of SIPTO unloading to the UE inquiry and connects.

Also can according to network condition be connected the unloading strategy of the subscriber equipment stored and connected for UE sets up two PDN simultaneously, one is that PDN for network side connects, another is to connect for the professional PDN of SIPTO unloading.This moment, MME accepted or refusal to user or UE inquiry SIPTO.

Further, can also make UE that the SIPTO unloading service selection rule of storage is sent to HNB/TOF or MME.

In a specific embodiment mode of the present invention, can be when UE set up the PDN connection of network side, whether HNB/TOF or MME agree to set up the professional PDN of SIPTO unloading to the UE inquiry connects; This mode can be applied to existing L-GW scheme and TOF scheme.

Concrete, when UE sets up the PDN connection of network side, in the L-GW scheme, can whether agree to set up the professional PDN of SIPTO unloading to the UE inquiry by MME and connect.Described flow process comprises as shown in Figure 2:

Step 201, UE are to MME (Mobility Management Entity, Mobility Management Entity) transmission is for the PDN connectivity request message of network side, the PDN that network side is set up in request connects, which kind of PDN connection an APN who carries in the PDN connectivity request message (Access Point Name, APN) sets up for explicitly pointing out the PDN connection of setting up network side or not explicitly pointing out.

Whether step 202, MME unload judgement according to the unloading strategy of network condition and the subscriber equipment stored, can adopt the SIPTO unloading professional to determine this UE; Can use the PDN connection that the SIPTO unloading is professional and can set up SIPTO if judge this UE, then jump to step 203, according to the APN that carries in the unloading strategy of network condition and the subscriber equipment stored and the PDN connectivity request message, the PDN that begins to set up for subscriber equipment network side connects flow process; Can't use the SIPTO unloading professional if judge this UE, then set up the PDN connection of network side according to mode of the prior art.

Wherein, the unloading strategy can be: be used to indicate the user and whether have the right to use the professional user class of SIPTO unloading; Be used to indicate and whether allow to set up the PDN rank that SIPTO PDN connects.Wherein, MME can obtain the unloading strategy from HSS.In HSS, include the SIPTO flag that is used to indicate user class in preservation user's the subscription data; Be used to indicate the APN of other PDN of PDN level; Pass through O﹠amp; The mode of M is issued to MME.MME stores after receiving this unloading strategy, and with this UE is verified.

Step 203, MME send to selected SGW (Serving Gateway, gateway) and set up the session solicited message; SGW sends to PGW (PDN Gateway, grouped data network gateway) and sets up the session solicited message; PGW sends the conversational response information of setting up to SGW; SGW sends the conversational response information of setting up to MME, and this moment is for beginning to set up the PDN connection flow process of network side.

Step 204, MME send PDN to UE and receive information, and this PDN receives information and is carried in S1-MME (the S1 control plane interface) control information, and sends to H (e) NB, and H (e) NB receives information this PDN and sends to UE.Comprise SIPTO indication (SIPTO Indication) during this PDN receives information, this SIPTO indication is used to indicate this PDN and is connected to for the professional PDN connection of SIPTO unloading.

Step 205, H (e) NB send RRC to UE and connect reconfiguration information; UE sends RRC to H (e) NB and connects the information of finishing of reshuffling; H (e) NB sends carrying to MME and sets up response message;

Step 206, UE generate feedback result for this SIPTO unloading business, and will send to H (e) NB among this feedback result interpolation Direct Transfer.Wherein the order of step 205 and step 206 can arbitrarily be exchanged or carry out simultaneously.

Wherein, UE can generate feedback result by the selection according to user's input, and namely step 206 is specifically as follows:

Whether step 2061, UE will set up the professional option of SIPTO unloading and be shown to the user;

Step 2062, UE according to the selection of user's input as feedback result;

Step 2063, UE add feedback result among the Direct Transfer to, and send to H (e) NB.

Wherein, this option can comprise: agree to set up that the SIPTO unloading is professional, this refusal is set up SIPTO unloading business and inquire next time, that this refusal is set up the SIPTO unloading is professional and all refuse later on again ....

Wherein, UE can also generate feedback result by the upper default unloading principle of UE, and namely step 206 is specifically as follows:

Step 206a, UE receive this PDN connect finish information after, read the unloading principle of the upper pre-stored of UE; Generate feedback result according to this unloading principle;

Step 206b, UE add feedback result among the Direct Transfer to, and send to H (e) NB.

Wherein, this option can comprise: agree to set up that SIPTO unloading is professional, this refusal is set up SIPTO unloading business and inquire next time, that this refusal is set up the SIPTO unloading is professional and all refuse later on again.

Step 207, H (e) NB finish information to MME with the PDN connection; This PDN connection is finished and is comprised this feedback result in the information.

Step 208, MME determine whether to set up the professional PDN connection of SIPTO unloading according to the feedback result that this PDN finishes in the information.That is: when feedback result is " it is professional that the SIPTO unloading is set up in agreement ", judge whether to begin to set up the PDN connection of SIPTO, this moment, UE originated from the flow process that MME newly sets up the professional PDN connection of SIPTO unloading in order to begin foundation; This flow process is prior art, does not repeat them here.When feedback result is refused for the user, judge whether to begin to set up the PDN connection of network side, then continue set up the PDN connection of network side for beginning to set up this connection this moment." this refusal is set up SIPTO unloading business and inquired next time again " if of user selection, then step finishes; If when " it is professional and all refuse later on that this refusal is set up SIPTO unloading " of user selection, then preserve this Reason For Denial, and, no longer inquire directly and refuse when setting up SIPTO unloading business for this UE when follow-up.

Further, if feedback result during for " agreement set up SIPTO unloading professional ", MME can also disconnect the PDN that has begun the network side set up and connect.The described flow process that disconnects comprises as shown in Figure 3:

Step 301, UE send the request that PDN disconnects to MME, namely carry and agree to set up the professional information of SIPTO unloading, comprise at least in the request that this PDN disconnects that the professional information of SIPTO unloading is set up in indication and the agreement of the PDN connection of PDN disconnection network side.The request that this PDN disconnects sends to MME through the base station.

Step 302, MME send the request of deletion reply to SGW; SGW sends deletion session solicited message to PGW; PGW sends deletion conversational response information to SGW; Carry out IP CAN Session Termination between PGW and the PCRF; SGW sends deletion conversational response information to MME.

Step 303, MME send the carrying request of removing to eNodeB (base station); The base station sends RRC to UE and connects reconfiguration information; UE sends RRC and connects the information of finishing of reshuffling to the base station; The base station sends to remove to carry to MME sets up response message.

Step 304, UE send Direct Transfer to the base station, the base station sends releasing EPS (Evolved Packet System, evolved packet system) carrying environment to MME and receives information.

Step 305, SGW send the session request of setting up to L-GW.

Concrete, in the TOF scheme, for Femto SIPTO, TOF is configured on the HNB-GW.Therefore can whether agree to set up the professional PDN of SIPTO unloading to the UE inquiry by H (e) NB connects.Described flow process comprises as shown in Figure 4:

Step 401, UE are to the PDN connectivity request message of MME transmission for network side, request is set up PDN and is connected, which kind of PDN connection an APN who carries in the PDN connectivity request message (Access Point Name, APN) sets up for explicitly pointing out the PDN connection of setting up network side or not explicitly pointing out.

Whether step 402, the TOF that is carried on H (e) NB unload judgement according to the unloading strategy of network condition and the subscriber equipment stored, can adopt the SIPTO unloading professional to determine this UE; Can use the SIPTO unloading professional if judge this UE, then jump to step 403, according to the APN that carries in the unloading strategy of network condition and the subscriber equipment stored and the PDN connectivity request message, the PDN that begins to set up for subscriber equipment network side connects flow process; Can't use the SIPTO unloading professional if judge this UE, then step finishes.

Wherein, the unloading strategy can be: user class; The PDN rank.Wherein, MME can obtain the unloading strategy from HSS.In HSS, in preservation user's the subscription data SIPTO flag is arranged; APN with certain PDN binding; Pass through O﹠amp; The mode of M is issued to MME.MME stores after receiving this unloading strategy, and with this UE is verified.

Step 403, MME send to selected SGW and set up the session solicited message; SGW sends to PGW and sets up the session solicited message; PGW sends the conversational response information of setting up to SGW; SGW sends the conversational response information of setting up to MME, and this moment is for beginning to set up the PDN connection flow process of network side.

Step 404, MME send PDN to UE and receive information; This PDN receives information and is carried in S1-MME (the S1 control plane interface) control information, and sends to H (e) NB, and H (e) NB receives information this PDN and sends to UE.

Step 405, H (e) NB send RRC to UE and connect reconfiguration information; This RRC connects and comprises at least the SIPTO indication in the reconfiguration information; This SIPTO indication is used to indicate this PDN and is connected to for the professional PDN connection of SIPTO unloading.

UE sends RRC to H (e) NB and connects the information of finishing of reshuffling; H (e) NB sends carrying to MME and sets up response message.

Step 406, UE generate feedback result for this SIPTO unloading business, and will send to H (e) NB among this feedback result interpolation Direct Transfer.

Wherein, the order of step 405 and step 406 can arbitrarily be exchanged or carry out simultaneously.

Wherein, in step 406, UE can generate feedback result by the selection according to user's input, and namely step 406 is specifically as follows:

Whether step 4061, UE will set up the professional option of SIPTO unloading and be shown to the user;

Step 4062, UE according to the selection of user's input as feedback result;

Step 4063, UE add feedback result among the Direct Transfer to, and send to H (e) NB.

Wherein, UE can also generate feedback result by the upper default unloading principle of UE, and namely step 406 is specifically as follows:

Step 406a, UE receive this PDN connect finish information after, read the unloading principle of the upper pre-stored of UE; Generate feedback result according to this unloading principle;

Step 406b, UE add feedback result among the Direct Transfer to, and send to H (e) NB.

Wherein, this option can comprise: agree to set up that SIPTO unloading is professional, this refusal is set up SIPTO unloading business and inquire next time, that this refusal is set up the SIPTO unloading is professional and all refuse later on again ....

Step 407, H (e) NB finish information to MME with the PDN connection, and this PDN connection is finished and comprised this feedback result in the information.

Step 408, MME determine whether to set up the professional PDN connection of SIPTO unloading according to the feedback result that this PDN finishes in the information.That is: when feedback result is " it is professional that the SIPTO unloading is set up in agreement ", judge whether to begin to set up the PDN connection of SIPTO, this moment, then UE originated from the flow process that MME sets up the professional PDN connection of SIPTO unloading in order to begin foundation; This flow process is prior art, does not repeat them here.

When feedback result is refused for the user, judge whether to begin to set up the PDN connection of network side, then continue set up the PDN connection of network side for beginning to set up this connection this moment." this refusal is set up SIPTO unloading business and inquired next time again " if of user selection, then step finishes; If when " it is professional and all refuse later on that this refusal is set up SIPTO unloading " of user selection, then preserve this Reason For Denial, and, no longer inquire directly and refuse when setting up the SIPTO connection for this UE when follow-up.

Further, if when feedback result was " it is professional that the SIPTO unloading is set up in agreement ", the PDN that the TOF of H (e) NB can ask MME to disconnect network side connected.The described flow process that disconnects does not repeat them here shown in Fig. 3 and step 301-305.

In another embodiment of the present invention, after can also judging according to the unloading strategy of network condition and the subscriber equipment of having stored, be PDN that UE sets up SIPTO when connecting at network side, whether MME agrees to set up the professional PDN of SIPTO unloading to the UE inquiry connects.For the L-GW scheme, its flow process comprises as shown in Figure 5:

The PDN that the PDN connectivity request message that step 501, UE send to MME, request are set up SIPTO connects, and an APN who wherein carries in the PDN connectivity request message explicitly points out the PDN that sets up SIPTO to connect.

Whether step 502, MME unload judgement according to the unloading strategy of network condition and the subscriber equipment stored, can adopt the SIPTO unloading professional to determine this UE; Can use the PDN connection that the SIPTO unloading is professional and can set up SIPTO if judge this UE, then jump to step 503, according to the APN that carries in the unloading strategy of network condition and the subscriber equipment stored and the PDN connectivity request message, the PDN that begins to set up for subscriber equipment SIPTO connects; Can't use the SIPTO unloading professional if judge this UE, then set up the PDN connection of network side according to mode of the prior art.

Wherein, the unloading strategy can be: be used for identifying user and whether have the right to use the professional user class of SIPTO unloading; Be used for sign and whether allow to set up the PDN rank that SIPTO PDN connects.Wherein, MME can obtain the unloading strategy from HSS.In HSS, include for other SIPTO flag of identifying user level in preservation user's the subscription data; The APN that is used for other PDN of sign PDN level; Pass through O﹠amp; The mode of M is issued to MME.MME stores after receiving this unloading strategy, and with this UE is verified.

Step 503, MME send to selected SGW and set up the session solicited message; SGW sends to L-GW and sets up the session solicited message; L-GW sends the conversational response information of setting up to SGW; SGW sends the conversational response information of setting up to MME, and this moment is for beginning to set up the PDN connection flow process of SIPTO.

Step 504, MME send PDN to UE and receive information, and this PDN receives information and is carried in S1-MME (the S1 control plane interface) control information, and sends to H (e) NB, and H (e) NB receives information this PDN and sends to UE.Comprise SIPTO indication (SIPTO Indication) during this PDN receives information, this SIPTO indication is used to indicate this PDN and is connected to for the professional PDN connection of SIPTO unloading.

Step 505, H (e) NB send RRC to UE and connect reconfiguration information; UE sends RRC to H (e) NB and connects the information of finishing of reshuffling; H (e) NB sends carrying to MME and sets up response message;

Step 506, UE generate feedback result for this SIPTO unloading business, and will send to H (e) NB among this feedback result interpolation Direct Transfer.Wherein the order of step 505 and step 506 can arbitrarily be exchanged or carry out simultaneously.

Wherein, UE can generate feedback result by the selection according to user's input, and namely step 506 is specifically as follows:

Whether step 5061, UE will set up the professional option of SIPTO unloading and be shown to the user;

Step 5062, UE according to the selection of user's input as feedback result;

Step 5063, UE add feedback result among the Direct Transfer to, and send to H (e) NB.

Wherein, this option can comprise: agree to set up that the SIPTO unloading is professional, this refusal is set up SIPTO unloading business and inquire next time, that this refusal is set up the SIPTO unloading is professional and all refuse later on again.

Wherein, UE can also generate feedback result by the upper default unloading principle of UE, and namely step 506 is specifically as follows:

Step 506a, UE receive this PDN connect finish information after, read the unloading principle of the upper pre-stored of UE; Generate feedback result according to this unloading principle;

Step 506b, UE add feedback result among the Direct Transfer to, and send to H (e) NB.

Step 507, H (e) NB finish information to MME with the PDN connection; This PDN connection is finished and is comprised this feedback result in the information.

Step 508, MME determine whether to set up the professional PDN connection of SIPTO unloading according to the feedback result that this PDN finishes in the information.

That is: when feedback result during for " agreement set up SIPTO unloading professional ", the PDN that judges whether to begin to set up SIPTO connects, and set up for beginning this moment, and then UE continues to finish with MME and sets up the flow process that the PDN of SIPTO unloading business is connected; This flow process is prior art, does not repeat them here.

When feedback result is refused for the user, judge whether to begin to set up the PDN connection of network side, then for subscriber equipment newly set up the PDN connection of network side for not beginning to set up this connection this moment." this refusal is set up SIPTO unloading business and inquired next time again " if of user selection, then step finishes; If when " it is professional and all refuse later on that this refusal is set up SIPTO unloading " of user selection, then preserve this Reason For Denial, and, no longer inquire directly and refuse when setting up the SIPTO connection for this UE when follow-up.

Further, when feedback result is refused for the user, the request that the PDN that can make UE initiate disconnection SIPTO connects.The flow process that the PDN of described disconnection SIPTO connects is as follows: the described flow process that disconnects comprises as shown in Figure 6:

Step 601, UE send the request that PDN disconnects to MME, namely carry refusal and set up the professional information of SIPTO unloading, at least comprise in the request that this PDN disconnects that PDN disconnects indication and the Reason For Denial of the PDN connection of SIPTO, the request that this PDN disconnects sends to MME through the base station.

Step 602, MME send the request of deletion reply to SGW; SGW sends deletion session solicited message to L-GW; L-GW sends deletion conversational response information to SGW; Carry out IP CAN Session Termination between L-GW and the PCRF; SGW sends deletion conversational response information to MME.

Step 603, MME send the carrying request of removing to eNodeB (base station); The base station sends RRC to UE and connects reconfiguration information; UE sends RRC and connects the information of finishing of reshuffling to the base station; The base station sends to remove to carry to MME sets up response message.

Step 604, UE send Direct Transfer to the base station, the base station sends releasing EPS (Evolved Packet System, evolved packet system) carrying environment to MME and receives information.

In each above-mentioned embodiment, when PDN connectivity request message that UE sends to MME, the number of times that the use that MME selects in the time of can connecting MME according to each time this UE of record connects for the PDN of network side and be connected the number of times that the professional PDN of SIPTO unloading connects, obtain user's use habit, and connect according to the PDN that user's use habit selects to set up first network side, still set up first the professional PDN of SIPTO unloading and connect.

Connect if set up first the PDN of network side, then subsequent step can be shown in step 201-step 208, step 401-step 408.Connect if set up first the professional PDN of SIPTO unloading, then follow-up flow process can be shown in step 501-508.

In yet another embodiment of the present invention, also can connect for UE sets up two PDN simultaneously, one is the PDN connection for network side, and another is to connect for the professional PDN of SIPTO unloading.This moment, MME accepted or refusal to user or UE inquiry SIPTO.For the L-GW scheme, its flow process comprises as shown in Figure 7:

The PDN connectivity request message that step 701, UE send to MME, request is set up PDN and is connected, and an APN who carries in the PDN connectivity request message explicitly points out the PDN connection of setting up network side or do not explicitly point out to set up which kind of PDN connection or explicitly point out the PDN that sets up SIPTO to connect.

Whether step 702, MME unload judgement according to the unloading strategy of network condition and the subscriber equipment stored, can adopt the SIPTO unloading professional to determine this UE; Can use the PDN connection that the SIPTO unloading is professional and can set up SIPTO if judge this UE, then jump to step 703, according to the APN that carries in the unloading strategy of network condition and the subscriber equipment stored and the PDN connectivity request message, the PDN that begins to set up SIPTO for subscriber equipment connects the flow process that connects with the PDN that is connected to set up network side; Can't use the SIPTO unloading professional if judge this UE, then set up the PDN connection of network side according to mode of the prior art.

Step 703, MME send to selected SGW and set up the session solicited message;

Step 704, SGW send to L-GW and set up the session solicited message, and L-GW sends the conversational response information of setting up to SGW; SGW sends to PGW and sets up the session solicited message, and PGW sends the conversational response information of setting up to SGW, connects the flow process that connects with the PDN that is connected to set up network side this moment for the PDN that begins to set up SIPTO;

Step 705, SGW send the conversational response information of setting up to MME;

Step 706, MME send PDN to UE and receive information, and this PDN receives information and is carried in S1-MME (the S1 control plane interface) control information, and sends to H (e) NB, and H (e) NB receives information this PDN and sends to UE.Comprise SIPTO indication (SIPTO Indication) during this PDN receives information, this SIPTO indication is used to indicate this PDN and is connected to for the professional PDN connection of SIPTO unloading.

Step 707, H (e) NB send RRC to UE and connect reconfiguration information; UE sends RRC to H (e) NB and connects the information of finishing of reshuffling; H (e) NB sends carrying to MME and sets up response message;

Step 708, UE generate feedback result for this SIPTO unloading business, and will send to H (e) NB among this feedback result interpolation Direct Transfer.Wherein the order of step 707 and step 708 can arbitrarily be exchanged or carry out simultaneously.

Wherein, UE can generate feedback result by the selection according to user's input, and namely step 708 is specifically as follows:

Whether step 7081, UE will set up the professional option of SIPTO unloading and be shown to the user;

Step 7082, UE according to the selection of user's input as feedback result;

Step 7083, UE add feedback result among the Direct Transfer to, and send to H (e) NB.

Wherein, UE can also generate feedback result by the upper default unloading principle of UE, and namely step 708 is specifically as follows:

Step 708a, UE receive this PDN connect finish information after, read the unloading principle of the upper pre-stored of UE; Generate feedback result according to this unloading principle;

Step 708b, UE add feedback result among the Direct Transfer to, and send to H (e) NB.

Step 709, H (e) NB finish information to MME with the PDN connection; This PDN connection is finished and is comprised this feedback result in the information.

Step 710, MME determine whether to set up the professional PDN connection of SIPTO unloading according to the feedback result that this PDN finishes in the information.That is:

When feedback result is " it is professional that the SIPTO unloading is set up in agreement ", judge whether to begin to set up the PDN connection of SIPTO, set up for beginning this moment, and then UE continues to finish the flow process of setting up the flow process that the professional PDN of SIPTO unloading is connected and the PDN connection of being connected network side with MME; This flow process is prior art, does not repeat them here.Further, when feedback result is agreed for the user, can make UE proceed to set up the flow process that the professional PDN of SIPTO unloading connects, and disconnect the request for the PDN connection of network side.The described flow process that disconnects does not repeat them here shown in step 301-304.

When feedback result is refused for the user, judge whether to begin to set up the PDN connection of network side, set up for beginning this moment, then continue as subscriber equipment and set up the flow process that the PDN of network side connects, and disconnection is for the request of the PDN connection of SIPTO.The described flow process that disconnects does not repeat them here shown in step 601-604." this refusal is set up SIPTO unloading business and inquired next time again " if of user selection, then step finishes; If when " it is professional and all refuse later on that this refusal is set up SIPTO unloading " of user selection, then preserve this Reason For Denial, and, no longer inquire directly and refuse when setting up the SIPTO connection for this UE when follow-up.Further, when feedback result is refused for the user, UE or MME are disconnected for the professional PDN of SIPTO unloading connect.

In another embodiment of the present invention, can make UE with unloading principle pre-configured and storage, namely agree or refusal is set up information that the PDN of SIPTO connects and is carried at UE and initially adheres in the solicited message or be carried at and send to H (e) NB/TOF or MME in the PDN connectivity request message.

At UE unloading principle pre-configured and storage is carried at when being sent to H (e) NB/TOF or MME in the PDN connectivity request message, MME will preserve this unloading principle, and according to this unloading principle the PDN of this UE is connected and to carry out Route Selection, the PDN of the SIPTO of this moment connects or the PDN establishment of connection flow process of network side is all prior art, does not repeat them here.

Be carried at UE take the unloading principle and initially adhere in the solicited message as example, its flow process is as follows:

Concrete, in the L-GW scheme, what its flow process can be as shown in Figure 8, comprising:

Step 801, UE send to MME and adhere to solicited message, and this adheres to and comprises the professional unloading principle of user SIPTO unloading of storing among the UE in the solicited message.

When step 802, MME receive this and adhere to solicited message, unloading principle is wherein stored.

Step 803, SGW send to PGW and set up the session solicited message, and PGW sends the conversational response information of setting up to SGW; SGW sends the conversational response information of setting up to MME.

Further, can also upgrade for the professional unloading principle of SIPTO unloading the user among the MME, namely said method also comprises:

Step 804, UE send the TAU solicited message to MME, comprise in this TAU solicited message after the renewal for the professional unloading principle of SIPTO unloading.

When step 805, MME receive this TAU solicited message, with storing for the professional unloading principle of SIPTO unloading after the renewal wherein.

Step 806, SGW send more new session solicited message to PGW, and PGW sends the conversational response information of upgrading to SGW; SGW sends the conversational response information of upgrading to MME.

Concrete, in the TOF scheme, what its flow process can be as shown in Figure 9, comprising:

Step 901, UE send to MME and adhere to solicited message, and this adheres to and comprises in the solicited message that the user who stores among the UE is for the professional unloading principle of SIPTO unloading.

When step 902, MME receive this and adhere to solicited message, unloading principle is wherein stored.

Step 903, SGW send to PGW and set up the session solicited message, and PGW sends the conversational response information of setting up to SGW; SGW sends the conversational response information of setting up to MME.

Step 904, MME connect the information of finishing to the TOF transmission PDN that is carried on H (e) NB, and this PDN connection is finished the information kind and comprised that the user who stores among the UE is for the professional unloading principle of SIPTO unloading.

Further, can also upgrade for the professional unloading principle of SIPTO unloading the user among the TOF, namely said method also comprises:

Step 905, UE send the TAU solicited message to MME, comprise in this TAU solicited message after the renewal for the professional unloading principle of SIPTO unloading.

When step 906, MME receive this TAU solicited message, with storing for the professional unloading principle of SIPTO unloading after the renewal wherein.

Step 907, SGW send more new session solicited message to PGW, and PGW sends the conversational response information of upgrading to SGW; SGW sends the conversational response information of upgrading to MME.

Step 908, MME connect the information of finishing to the TOF transmission PDN that is carried on H (e) NB, and this PDN connects the unloading principle for SIPTO unloading business of finishing after the information kind comprises renewal.

In the embodiment of above-mentioned step 801-806 and step 901-908, when the PDN that sets up SIPTO unloading business connects, can unload professional unloading principle by the user that UE sends for SIPTO by H (e) NB/TOF or MME, determine whether to set up the professional PDN of SIPTO unloading and connect.

In the embodiment of the invention, for different application scenarioss corresponding handling process has been proposed, to improve the availability of the embodiment of the invention.

Embodiment 3

Third embodiment of the invention has proposed a kind of Mobility Management Entity.Its structure as shown in figure 10, described Mobility Management Entity comprises:

Receiver 1001, the information that the PDN that sets up SIPTO for agreement or the refusal of the transmission of reception subscriber equipment connects;

Judge module 1002 be used for to judge that the information that the PDN of the SIPTO that receiver receives connects is to agree, or the PDN that refusal is set up SIPTO connects;

The first processing module 1003, if the information that is used for receiving is set up the information of the PDN connection of SIPTO for agreement, judge whether to begin to set up the PDN connection of SIPTO, set up if begun, then continue the PDN establishment of connection flow process of the SIPTO begun, and after finishing, foundation use the PDN of this SIPTO to connect the business that unloads, do not set up if begin, then newly set up the PDN connection of SIPTO for described subscriber equipment, and after foundation is finished, use the PDN of this newly-established SIPTO to connect the business that unloads;

The second processing module 1004, if the information that is used for receiving is set up the information of the PDN connection of SIPTO for refusal, judge whether to begin to set up the PDN connection of network side, set up if begun, then continue the PDN establishment of connection flow process of the network side begun, if do not begin to set up, then newly set up the PDN connection of network side for described subscriber equipment.

Embodiment 4

Fourth embodiment of the invention has proposed a kind of Mobility Management Entity.Its structure as shown in figure 11, described Mobility Management Entity comprises: receiver 1101, judge module 1102, the first processing module 1103, the second processing module 1104 can also comprise transmitter 1105, the first pre-established link blocks 1106, the second pre-established link block 1107, the 3rd pre-established link block 1108, the four pre-established link blocks 1109, the first stop link block 1110, second stops link block 1111, memory module 1112.

Receiver 1101, the information that the PDN that sets up SIPTO for agreement or the refusal of the transmission of reception subscriber equipment connects.

Receive at receiver 1101 before the information of the agreement of subscriber equipment transmission or the PDN connection that refusal is set up SIPTO, can receive the information of the agreement of subscriber equipment transmission or the PDN connection that refusal is set up SIPTO, be carried at adhering in solicited message or the PDN connectivity request message of described subscriber equipment transmission, MME will preserve this unloading principle, and according to this unloading principle Route Selection be carried out in the PDN connection of this UE.

Before the information that the PDN that agreement or the refusal of receiver 1101 reception subscriber equipmenies transmissions are set up SIPTO connects, can also send SIPTO to subscriber equipment by transmitter 1105 and indicate, whether can unload business in order to inquire the user.

Transmitter 1105 is used for sending the SIPTO indication to described subscriber equipment, connects with the PDN that indicates described subscriber equipment to set up SIPTO.

Transmitter 1105 specifically is used for:

Send the information that PDN connects to described subscriber equipment, carry the SIPTO indication in the information that described PDN connects

In this case, the information that receives the agreement of subscriber equipment transmission or the PDN connection that refusal is set up SIPTO specifically comprises: receive described subscriber equipment to the feedback result of described SIPTO indication, described feedback result is for agreeing or refuse to set up the PDN connection of SIPTO.

Wherein, feedback result is that described subscriber equipment is according to user's selection generation; Or be that described subscriber equipment is according to the SIPTO unloading principle generation of pre-stored.

Preserve by memory module 1112 for feedback result.

Memory module 1112 is used for storing described feedback result, and no longer inquires in the given time described subscriber equipment and directly refuse to be the PDN connection that described subscriber equipment is set up SIPTO.

Before transmitter 1105 sends the SIPTO indication to subscriber equipment, MME can also according to network condition be connected the unloading strategy of the subscriber equipment stored and once the selection situation of subscriber equipment be that described subscriber equipment is set up the flow process that PDN connects in advance, so MME can also comprise in the following modules at least one:

The first pre-established link block 1106 is used for the unloading strategy according to network condition and the subscriber equipment stored, begins to set up for described subscriber equipment the PDN connection of network side;

The second pre-established link block 1107 is used for the unloading strategy according to network condition and the subscriber equipment stored, begins to set up for described subscriber equipment the PDN connection of SIPTO;

The 3rd pre-established link block 1108 is used for the unloading strategy according to network condition and the subscriber equipment stored, begins to be connected the PDN connection with network side for PDN that described subscriber equipment is set up SIPTO connects;

The 4th pre-established link block 1109 is used for according to described subscriber equipment in the past the selection situation of SIPTO, begins to connect or begin to connect for the PDN that described subscriber equipment is set up network side for PDN that described subscriber equipment is set up SIPTO the connection of one of them.

Judge module 1102 be used for to judge that the information that the PDN of the SIPTO that receiver receives connects is to agree, or the PDN that refusal is set up SIPTO connects;

The first processing module 1103, if the information that is used for receiving is set up the information of the PDN connection of SIPTO for agreement, judge whether to begin to set up the PDN connection of SIPTO, set up if begun, then continue the PDN establishment of connection flow process of the SIPTO begun, and after finishing, foundation use the PDN of this SIPTO to connect the business that unloads, do not set up if begin, then newly set up the PDN connection of SIPTO for described subscriber equipment, and after foundation is finished, use the PDN of this newly-established SIPTO to connect the business that unloads;

The second processing module 1104, if the information that is used for receiving is set up the information of the PDN connection of SIPTO for refusal, judge whether to begin to set up the PDN connection of network side, set up if begun, then continue the PDN establishment of connection flow process of the network side begun, if do not begin to set up, then newly set up the PDN connection of network side for described subscriber equipment.

Because MME sets up the flow process that PDN connects for described subscriber equipment in advance according to different situations, the first processing module 1103 be connected that processing module 1104 carries out that continuation that PDN connects is set up or new Establishing process after, the flow process of setting up in advance can also be stopped, so MME can also comprise:

First stops link block 1110, if be used for having begun to set up for described subscriber equipment the PDN connection of SIPTO, then stops the PDN connection building process of described SIPTO.

Second stops link block 1111, if be used for having begun to set up for described subscriber equipment the PDN connection of network side, then stops the PDN connection building process of described network side.

Need to prove: above-mentioned the 3rd, the 4th embodiment only is illustrated with the division of above-mentioned each functional module, in the practical application, can as required the above-mentioned functions distribution be finished by different functional modules, the internal structure that is about to device is divided into different functional modules, to finish all or part of function described above.The method that above-mentioned the 3rd, the 4th embodiment and first, second embodiment propose belongs to same design; Therefore same section repeats no more.

One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.

The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a professional discharging method is characterized in that, described method comprises:

2. method according to claim 1 is characterized in that, before the information that the PDN that the agreement that described reception subscriber equipment sends or refusal are set up SIPTO connects, comprising:

Send the SIPTO indication to described subscriber equipment, connect with the PDN that indicates described subscriber equipment to set up SIPTO;

The information of the PDN connection that the agreement that described reception subscriber equipment sends or refusal are set up SIPTO specifically comprises: receive described subscriber equipment to the feedback result of described SIPTO indication, described feedback result is the PDN connection of agreeing or refusal is set up SIPTO.

3. method according to claim 2 is characterized in that, described feedback result is that described subscriber equipment is according to user's selection generation; Or be that described subscriber equipment is according to the SIPTO unloading principle generation of pre-stored.

4. method according to claim 2 is characterized in that, and is described to described subscriber equipment transmission SIPTO indication, comprising:

Send the information that PDN connects to described subscriber equipment, carry the SIPTO indication in the information that described PDN connects.

5. method according to claim 2 is characterized in that, and is described before described subscriber equipment transmission SIPTO indication, also comprises:

According to the unloading strategy of network condition and the subscriber equipment stored, the PDN that begins to set up for described subscriber equipment network side connects;

Or according to the unloading strategy of network condition and the subscriber equipment stored, the PDN that begins to set up for described subscriber equipment SIPTO connects;

Or, according to the unloading strategy of network condition and the subscriber equipment stored, begin to be connected the PDN connection with network side for PDN that described subscriber equipment is set up SIPTO connects;

Or, to the selection situation of SIPTO, begin to connect or begin to connect for the PDN that described subscriber equipment is set up network side for PDN that described subscriber equipment is set up SIPTO the connection of one of them according to described subscriber equipment in the past.

6. each described method is characterized in that according to claim 3-5, and described is that described subscriber equipment is newly set up after the PDN connection of network side, also comprises:

If begun to set up for described subscriber equipment the PDN connection of SIPTO, then stop the PDN connection building process of described SIPTO.

7. each described method is characterized in that according to claim 3-5, and described is that described subscriber equipment is newly set up after the PDN connection of SIPTO, also comprises:

If begun to set up for described subscriber equipment the PDN connection of network side, then stop the PDN connection building process of described network side.

8. each described method is characterized in that according to claim 3-7, and described is that described subscriber equipment is newly set up after the PDN connection of network side, also comprises:

Store described feedback result, and no longer inquire in the given time described subscriber equipment and directly refuse to be the PDN connection that described subscriber equipment is set up SIPTO.

9. method according to claim 1 is characterized in that, the information that the PDN that the agreement that described subscriber equipment sends or refusal are set up SIPTO connects is carried at adhering in solicited message or the PDN connectivity request message of described subscriber equipment transmission.

10. a Mobility Management Entity is characterized in that, described Mobility Management Entity comprises:

11. Mobility Management Entity according to claim 10 is characterized in that, described Mobility Management Entity also comprises:

Transmitter is used for sending the SIPTO indication to described subscriber equipment, connects with the PDN that indicates described subscriber equipment to set up SIPTO;

12. Mobility Management Entity according to claim 10 is characterized in that, described feedback result is that described subscriber equipment is according to user's selection generation; Or be that described subscriber equipment is according to the SIPTO unloading principle generation of pre-stored.

13. Mobility Management Entity according to claim 10 is characterized in that, described transmitter specifically is used for:

14. Mobility Management Entity according to claim 10 is characterized in that, described Mobility Management Entity also comprises at least one in the following modules:

The first pre-established link block is used for the unloading strategy according to network condition and the subscriber equipment stored, begins to set up for described subscriber equipment the PDN connection of network side;

The second pre-established link block is used for the unloading strategy according to network condition and the subscriber equipment stored, begins to set up for described subscriber equipment the PDN connection of SIPTO;

The 3rd pre-established link block is used for the unloading strategy according to network condition and the subscriber equipment stored, begins to be connected the PDN connection with network side for PDN that described subscriber equipment is set up SIPTO connects;

The 4th pre-established link block is used for according to described subscriber equipment in the past the selection situation of SIPTO, begins to connect or begin to connect for the PDN that described subscriber equipment is set up network side for PDN that described subscriber equipment is set up SIPTO the connection of one of them.

15. each described Mobility Management Entity is characterized in that according to claim 12-14, described Mobility Management Entity also comprises:

First stops link block, if be used for having begun to set up for described subscriber equipment the PDN connection of SIPTO, then stops the PDN connection building process of described SIPTO.

16. each described Mobility Management Entity is characterized in that according to claim 12-14, described Mobility Management Entity also comprises:

Second stops link block, if be used for having begun to set up for described subscriber equipment the PDN connection of network side, then stops the PDN connection building process of described network side.

17. each described Mobility Management Entity is characterized in that according to claim 12-16, described Mobility Management Entity also comprises:

Memory module is used for storing described feedback result, and no longer inquires in the given time described subscriber equipment and directly refuse to be the PDN connection that described subscriber equipment is set up SIPTO.

18. Mobility Management Entity according to claim 10 is characterized in that, the information that the PDN that the agreement that described subscriber equipment sends or refusal are set up SIPTO connects is carried at adhering in solicited message or the PDN connectivity request message of described subscriber equipment transmission.