CN103229576A

CN103229576A - Connection establishment method and device

Info

Publication number: CN103229576A
Application number: CN2012800026763A
Authority: CN
Inventors: 戚彩霞; 舒林
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-12-26
Filing date: 2012-12-26
Publication date: 2013-07-31
Also published as: WO2014101011A1

Abstract

The invention provides a connection establishment method and device. The method is as follows: when a network does not support the characteristics of a multi-PDN connection of a single APN, judging whether an APN corresponding to a second PDN connection which is requested to be established by a piece of user equipment is identical with an APN corresponding to a first PDN connection already established by the user equipment; and if identical, and priorities are different, a mobility management entity instructs the network to delete a context connected with the first PDN and to establish a context connected with the second PDN. So when the network does not support the characteristics of the multi-PDN connection of the single APN, PDN connections of different signaling priorities can be established for the same APN without deletion of the original PDN connection by the UE so that signaling overheads and netiquette work loads are reduced and APN resources are saved.

Description

A kind of method and apparatus that connects

Technical field

The invention belongs to the communications field, relate in particular to a kind of method and apparatus that connects.

Background technology

In the mobile communications network, (User Equipment UE) needs to initiate the data channel of signaling process foundation and network in order to transmit business data packet to subscriber equipment.And UE and network can be set up a plurality of bearer path on this data channel, and wherein, these bearer path can have different service quality to guarantee that dissimilar business datums wraps on the different bearer path and transmits.UE carries the indication of signaling priority, in order to indicate the priority of this data channel in signaling message when signaling processes such as foundation of initiation data channel and bearer path foundation.Signaling priority indication information is mainly used in overload control and charges, mobile management entity (Mobility Management Entity, MME), gateway (Serving Gateway, SGW) and data gateway (Packet Data Network Gateway, PDN-GW) all can store this information, utilize the signaling priority of receiving in the signaling message to indicate the congested control of decision to this message, as network element when congested, the signaling message of preferential refusal low priority indication utilizes the signaling priority indication of storage to produce charging bill.

Configuration signal priority on UE, as for machine to machine (Machine to Machine, M2M) terminal, be applied to the M2M terminal of automatic vending machine or electronic meter reading, the possible configuration low priority, the PDN that sets up low priority connects, and for the M2M terminal of safety detection or medical monitoring etc., configuration standard priority then, the PDN that sets up standard priority connects.Set up the PDN connection of low priority as UE after, may be because need to send significant data, as warning information or business report etc., the PDN that the PDN connection of low priority need be revised as standard priority connects.For this reason, UE is initiated to the new PDN establishment of connection request of same APN, and the new PDN that sets up a standard priority level connects in order to transmit significant data.Simultaneously, UE can initiate PDN and connect the deletion flow process, and the PDN of the original low priority of setting up of deletion connects.Equally, UE also can connect the PDN of standard priority the PDN connection that is revised as low priority.

But the characteristic that the mechanism that the PDN connection priority is revised needs the many PDN of the same APN of network support to connect may exist some networks not support the characteristic that the many PDN of same APN connect.Like this, when, carrying the cause value of " many PDN of same APN connect do not allow " in the message when UE receives the PDN connection refused message, UE only original PDN connect successfully deleted after, could initiate the PDN connection that the PDN connection building process is set up different priorities; Perhaps UE need be initiated to the PDN connection building process of different APN.

If network is not supported the characteristic that the many PDN of same APN connect in the prior art, the new PDN establishment of connection flow process that UE need attempt once same APN can know just whether network supports this characteristic; The PDN that the original PDN connection of user terminal deletion earlier simultaneously could be set up new different priorities connects, and has only as UE under the situation of a PDN connection, must initiate attachment flow more earlier from network detach.This mechanism can be come signaling consumption to Netowrk tape, the waste Internet resources.And adopt the mechanism of different APN, network need be that this scene is assigned different APN, increases network planning work, waste APN resource.

Simultaneously, the mechanism that the PDN connection priority of prior art is revised, the user terminal that may cause disposing low priority in a large number utilizes this mechanism that the PDN connection of low priority is revised as high priority, in order to enjoy better network service and quality of service.

Summary of the invention

The purpose of the embodiment of the invention is to provide a kind of method that connects, when being intended to solve the characteristic that network do not support that the many PDN of same APN connect, the signaling consumption that the mechanism that the PDN connection priority is revised is brought to network, and how to prevent that the UE of low priority from utilizing the PDN of standard priority to connect the problem that takies a large amount of Internet resources always.

First aspect, a kind of method that connects, described method comprises:

When network is not supported the characteristic that single APN APN multi-grouping data network PDN connects, and the 2nd PDN that user equipment requests is set up connects corresponding APN and a PDN that described subscriber equipment has been set up and connects corresponding APN when identical, and described mobile management entity MME judges whether second priority of described the 2nd PDN connection is identical with first priority of described PDN connection;

If inequality, then described MME indicates described network to delete described PDN connection context, and indicates described network to set up described the 2nd PDN connection context.

In conjunction with first aspect, in first kind of first aspect possible implementation, described method also comprises: described MME obtains the characteristic whether described network supports that the many PDN of single APN connect.

In conjunction with first kind of first aspect possible implementation, in second kind of first aspect possible implementation, described MME obtains the characteristic whether described network supports that the many PDN of single APN connect, and comprising:

Described MME sends to described SGW and sets up the 3rd PDN connection requests, and the corresponding APN of described the 3rd PDN connection is connected corresponding APN with a described PDN who has set up identical;

Described MME receives the refusal response that described SGW replys, and cause value is carried in described refusal response, is used to indicate described network not support the characteristic that the many PDN of single APN connect.

In conjunction with first kind of first aspect possible implementation, in the third possible implementation of first aspect, described MME obtains the characteristic whether network supports that the many PDN of single APN connect, and comprising:

Described MME sends probe requests thereby Echo Request to described SGW;

Described MME receives the probe response of described SGW, and indication information is carried in described probe response, is used to indicate described network whether to support the characteristic that the many PDN of single APN connect.

In conjunction with second kind of possible implementation of first kind of first aspect or first aspect possible implementation or first aspect or the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect, described method also comprises:

The described MME described subscriber equipment that sends a notification message, described notification message carries the information that the described network of indication is not supported the characteristic that the many PDN of single APN connect, and is used to indicate described subscriber equipment to initiate the bearer update flow process and upgrades the described priority that PDN connects of having set up.

Second kind of possible implementation or the third possible implementation of first aspect or the 4th kind of possible implementation of first aspect in conjunction with first kind of first aspect or first aspect possible implementation or first aspect, in the 5th kind of possible implementation of first aspect, described method also comprises:

If described second priority is greater than described first priority, described MME starts the priority timer, and described priority timer is used for when described priority timer expiry, and indicating described MME is described first priority with described second priority update.

Second aspect, a kind of method that connects, described method comprises:

Subscriber equipment receives the notification message that MME sends, and carries the information that indication network is not supported the characteristic that the many PDN of single APN connect in the described notification message;

It is identical that the 2nd PDN that sets up when described user equipment requests connects the corresponding APN of PDN connection that corresponding APN and described subscriber equipment set up, and first priority that second priority that described the 2nd PDN connects is connected with a described PDN is not simultaneously, described subscriber equipment is initiated the bearer update flow process, and MME is described second priority with described first priority update that a described PDN connects in order to indication.

The third aspect, a kind of equipment that connects, described equipment comprises:

Judging unit, be used for when network is not supported the characteristic of the many PDN connections of single APN, and the 2nd PDN that user equipment requests is set up connects corresponding APN and a PDN that described subscriber equipment has been set up and connects corresponding APND when identical, and described MME judges whether second priority of described the 2nd PDN connection is identical with first priority of described PDN connection;

If the unit is set up in deletion, is used for inequality, and then described MME indicates described network to delete described PDN connection context, and indicates described network to set up described the 2nd PDN connection context.

In conjunction with the third aspect, in first kind of the third aspect possible implementation, described equipment also comprises:

Acquiring unit is used for described MME and obtains the characteristic whether described network supports that the many PDN of single APN connect.

In conjunction with first kind of the third aspect possible implementation, in second kind of the third aspect possible implementation, described acquiring unit specifically is used for:

In conjunction with first kind of the third aspect possible implementation, in the third possible implementation of the third aspect, described acquiring unit specifically is used for:

Described MME sends probe requests thereby Echo Request to described SGW;

In conjunction with second kind of possible implementation of first kind of the third aspect or the third aspect possible implementation or the third aspect or the third possible implementation of the third aspect, in the 4th kind of possible implementation of the third aspect, described equipment also comprises:

Second kind of possible implementation or the third possible implementation of the third aspect or the 4th kind of possible implementation of the third aspect in conjunction with first kind of the third aspect or the third aspect possible implementation or the third aspect, in the 5th kind of possible implementation of the third aspect, described equipment also comprises:

Timer units, be used for as if described second priority greater than described first priority, described MME starts the priority timer, and described priority timer is used for when described priority timer expiry, and indicating described MME is described first priority with described second priority update.

Fourth aspect, a kind of equipment that connects, described equipment comprises:

Receiving element is used for subscriber equipment and receives the notification message that MME sends, and carries the information that indication network is not supported the characteristic that the many PDN of single APN connect in the described notification message;

The bearer update unit, it is identical that the 2nd PDN that is used for setting up when described user equipment requests connects the corresponding APN of PDN connection that corresponding APN and described subscriber equipment set up, and first priority that second priority that described the 2nd PDN connects is connected with a described PDN is not simultaneously, described subscriber equipment is initiated the bearer update flow process, and MME is described second priority with described first priority update that a described PDN connects in order to indication.

Compared with prior art, the invention provides a kind of method that connects, described method is when network is not supported the characteristic of the many PDN connections of single APN, whether identical by judging that the 2nd PDN that user equipment requests is set up connects the corresponding APN of PDN connection that corresponding APN and subscriber equipment set up, if it is identical, and priority difference, then mobile management entity indicates described network to delete the context that a described PDN connects, and indicate described network to set up the context that the 2nd PDN connects, realize when network is not supported same many PDN of APN connection performance, do not need UE to delete the PDN connection that original PDN connects the different signaling priority that still can set up same APN, thereby reduced the signaling consumption and the network planning workload of network, saved the APN resource.

Description of drawings

Fig. 1 is a kind of method flow diagram that connects that the embodiment of the invention one provides;

Fig. 2 is a kind of method flow diagram that connects;

Fig. 3 is a kind of method flow diagram whether network supports single many PDN of APN connection performance that obtains;

Fig. 4 is a kind of method flow diagram whether network supports single many PDN of APN connection performance that obtains;

Fig. 5 is a kind of method flow diagram that connects that the embodiment of the invention two provides;

Fig. 6 is a kind of method flow diagram whether network supports single many PDN of APN connection performance that obtains;

Fig. 7 is a kind of method schematic diagram that connects;

Fig. 8 is a kind of method flow diagram that connects that the embodiment of the invention three provides;

Fig. 9 is a kind of method flow diagram that connects that the embodiment of the invention four provides;

Figure 10 is a kind of equipment that connects that the embodiment of the invention five provides;

Figure 11 is a kind of equipment that connects that the embodiment of the invention six provides;

Figure 12 is the structure drawing of device of a kind of mobile management entity of providing of the embodiment of the invention seven;

Figure 13 is the structure drawing of device of a kind of subscriber equipment of providing of the embodiment of the invention eight.

Embodiment

In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.

Embodiment one

With reference to figure 1, Fig. 1 is a kind of method flow diagram that connects that the embodiment of the invention one provides, and said method comprising the steps of:

Step 101, when network is not supported the characteristic that single APN APN multi-grouping data network PDN connects, and the 2nd PDN that user equipment requests is set up connects corresponding APN and a PDN that described subscriber equipment has been set up and connects corresponding APN when identical, and described mobile management entity MME judges whether second priority of described the 2nd PDN connection is identical with first priority of described PDN connection;

In this step, when network is not supported single APN (Access Point Name, APN) multi-grouping data network (Packet Data Network, during the characteristic that PDN) connects, mobile management entity (Mobility Management Entity, MME) receive subscriber equipment (User Equipment, during UE) request message, judge whether the 2nd PDN that described UE request is set up connects the corresponding APN of PDN connection that corresponding APN and described UE set up identical, if it is identical, judge that then first priority whether second priority that described the 2nd PDN connects be connected with a described PDN is identical, such as, the one PDN is connected to low priority, and the 2nd PDN is connected to standard priority, and is perhaps opposite.Concrete, with reference to the step 202 of figure 2.

Step 102, if inequality, then described MME indicates described network to delete described PDN connection context, and indicates described network to set up described the 2nd PDN connection context.

In this step, the PDN that connects as described the 2nd PDN is identical with the PDN that a described PDN is connected, and the priority that the priority that described the 2nd PDN connects is connected with a described PDN is not simultaneously, described MME sends and sets up conversation request message to gateway (Serving Gateway, SGW), carry the MME address in the described message, interface type, international mobile subscriber identification code (International Mobile SubscriberIdentification Number, IMSI), APN, information such as signaling priority indication and default bearer sign, wherein the value that identifies of the default bearer that is connected with a PDN of the value of default bearer sign is identical.Concrete, refer step 203.

When described the 2nd PDN connects the APN difference that is connected with a described PDN, during situation that perhaps the APN equal priority is identical, the PDN of described MME refusal UE connects foundation to be asked.

When SGW receive described set up conversation request message after, if the IMS in the message, APN, interface type and IMSI are connected identical with a described PDN, described SGW deletes a PDN and connects, a newly-built PDN connects, and stores the described signaling priority indication of carrying in the conversation request message of setting up.

Described SGW sends agent binding update messages, and (Packet Data Network Gateway PDN-GW), carries information such as IMSI, APN and the indication of signaling priority in the message to data gateway.After described PDN-GW receives described updating message, if the IMSI during a PDN connects and APN are connected the same with PDN in the described updating message, the PDN that the PDN-GW deletion has been set up connects, and sets up the 2nd PDN and connects, and store the signaling priority indication of carrying in the described updating message.

As a kind of optional embodiment, described method also comprises: described MME obtains the characteristic whether described network supports that the many PDN of single APN connect.

Optionally, described MME obtains the characteristic whether described network supports that the many PDN of single APN connect, and comprising:

Specifically, the 2nd PDN that described MME receives UE connects the request of foundation, and the APN in the PDN connection that described UE has set up is identical with the APN during described the 2nd PDN connects, and described MME sends and sets up conversation request to SGW; Set up conversational response message to described MME when described SGW replys, carry cause value in the message: single APN is many, and the PDN connection is not supported.Described MME knows that by described cause value described network do not support the many PDN of single APN to connect.Concrete, with reference to the step 305 of figure 3.

Optionally, described MME obtains the characteristic whether network supports that the many PDN of single APN connect, and comprising:

Described MME sends probe requests thereby Echo Request to described SGW;

Concrete, described MME transmits a probe request to described SGW, and described SGW carries the indication of whether supporting that the many PDN of single APN connect in probe response.Concrete, with reference to step 403 and the step 404 of figure 4.

As another kind of optional embodiment, described method also comprises: the described MME described subscriber equipment that sends a notification message, described notification message carries the information that the described network of indication is not supported the characteristic that the many PDN of single APN connect, and is used to indicate described subscriber equipment to initiate the bearer update flow process and upgrades the described priority that PDN connects of having set up.

Attainable, when described MME knew whether network supports the characteristic of the many PDN connections of single APN, described UE knew from described MME whether described network supports the characteristic that the many PDN of single APN connect by register flow path.Concrete, with reference to the step 505 of figure 5.

Below with the mutual mutual flow chart of communication entities such as UE, Access Network, MME, SGW, PDN-GW, PCRF the step of Fig. 2, Fig. 3, Fig. 4, Fig. 5 is done further explanation.

As shown in Figure 2, Fig. 2 is a kind of method flow diagram that connects, and may further comprise the steps:

Step 201, UE sends the 2nd PDN connection message, carries information such as request APN and signaling priority in the message;

Step 202 after described MME receives the 2nd PDN connection message of described UE, judges that the APN that described the 2nd PDN connects is connected the different PDN that corresponding APN knows whether UE initiates same APN and connects foundation with the PDN that described UE has set up.Described MME connects corresponding signaling priority by a described PDN of storage simultaneously, knows with the signaling priority of carrying in described the 2nd PDN connection message whether described UE initiates the PDN connection message of the different signaling priority of same APN.As, a PDN is connected to standard priority, and the 2nd PDN is connected to low priority, and perhaps opposite;

PDN for the different priorities of identical APN connects situation about setting up, described MME sends and sets up conversation request message to SGW, carry described MME address, interface type, international mobile subscriber identity (International Mobile SubscriberIdentification Number in the described message, IMSI), information such as the indication of APN, signaling priority and default bearer sign, wherein the value of default bearer sign is identical with the value that default bearer that a PDN connects identifies;

For other situations, the PDN that described MME refuses described UE connects the request of foundation;

After described SGW receives and sets up conversation request message, if the IMSI in the message, APN, interface type and default bearer sign are connected identical with a PDN who has set up, the PDN that the local deletion of described SGW has been set up connects, the 2nd PDN that asks in the newly-built message connects, and the signaling priority of carrying in storing message indication;

Step 203, described SGW sends agent binding update messages to PDN-GW, carries information such as IMSI, APN and the indication of signaling priority in the message.After described PDN-GW receives message, if the IMSI during a described PDN connects is connected the same with APN with the 2nd PDN, the PDN that the local deletion of described PDN-GW has been set up connects, and set up the 2nd corresponding in request message PDN and connect, and the indication of storage signaling priority;

Step 204, (Plicy and Charging Rule Function sets up session connection between PCRF) for described SGW and "Policy and Charging Rules Function;

Step 205 is set up session connection between described PDN-GW and the RCRF;

Step 207, described SGW replys and sets up conversational response message to described MME;

Step 208, the up bearer path between Access Network foundation and described SGW, foundation is connected with the Radio Resource of described UE;

Step 209, described answer PDN connection setup complete message is given described MME;

Step 210, described MME upgrades PDN and connects, and sets up the down going channel between Access Network and gateway.

Agreement between SGW described in Fig. 2 and described PDN-GW is the mobile Ipv6(Proxy Mobile Ipv6 of agency, PMIP), agreement when between described SGW and described PDN-GW is GPRS Tunnel Protocol (GPRS Tunnelling Protocol, GTP) time, step 203 replaces by setting up conversation request message, carries information such as interface type, user ID IMSI, APN, the indication of signaling priority and default bearer sign in the message.After described PDN-GW receives and sets up conversation request message, if the IMSI in the message, APN, interface type and default bearer sign are connected identical with the PDN that has set up, the PDN that the local deletion of described PDN-GW has been set up connects, the PDN that asks in the newly-built message connects, and the signaling priority of carrying in storing message indication.Step 206 replaces by setting up conversational response message.Step 204 cancellation.

As shown in Figure 3, Fig. 3 is a kind of method flow diagram whether network supports single many PDN of APN connection performance that obtains, and may further comprise the steps:

Step 301, the 2nd PDN that MME receives UE connects the request of foundation, and described UE has set up PDN connection and has connected corresponding identical APN with described the 2nd PDN;

Step 302, described MME sends and sets up conversation request message to SGW;

Step 303, described SGW sends agent binding update messages to PDN-GW;

Step 304, described PDN-GW replys proxy binding acknowledgment messages, sets up if PDN-GW does not support the many PDN of single APN to connect, and then carries cause value in this message: single APN is many, and the PDN connection is not supported;

Step 305, described SGW replys and sets up conversational response message and give described MME, carries cause value in the message: the many PDN of single APN connect and do not support, and described MME knows that by this cause value corresponding network do not support the many PDN of single APN to connect;

Step 306, described MME replys the PDN connection and sets up refuse information.

In the method, receive the message of step 302 as described SGW after, if described SGW does not support the many PDN of single APN to connect,, directly reply and set up conversational response message and give MME in step 305 then without execution in step 303, carry described cause value in the message.

Interface protocol between SGW described in this flow process and the described PDN-GW is the PMIP agreement, and when the interface protocol between described SGW and the described PDN-GW was GPRS Tunnel Protocol, message was step 303: set up conversation request and step 304 and set up conversational response.

In this method, described by single many PDN of APN connection requests in the network, just can know the ability of network, simultaneously can be with the user terminal of this ability notice subsequent registration.

As shown in Figure 4, Fig. 4 is a kind of method flow diagram whether network supports single many PDN of APN connection performance that obtains, and may further comprise the steps:

Step 401, SGW sends probe request message to PDN-GW;

Step 402, described PDN-GW replys probe response, carries the ability of whether supporting that the many PDN of single APN connect simultaneously in message;

Step 403, MME sends probe requests thereby;

Step 404, SGW carries the ability of whether supporting that the many PDN of single APN connect in probe response;

In this mechanism, described SGW and PDN-GW also can initiatively send probe request message with knowing that the opposite end supports the ability that the many PDN of single APN are connected.No matter be that PDN-GW does not support the many PDN of single APN to connect, or SGW does not support that SGW notifies the MME network not support the many PDN of single APN to connect in the path is surveyed.

The method that Fig. 4 provides, by surveying the ability that mechanism knows that the many PDN of the single APN of network support connect according to the path by MME, simultaneously can be with the user terminal of this ability notice subsequent registration.。

The invention provides a kind of method that connects, described method is when network is not supported the characteristic of the many PDN connections of single APN, whether identical by judging that the 2nd PDN that user equipment requests is set up connects the corresponding APN of PDN connection that corresponding APN and subscriber equipment set up, if it is identical, and priority difference, then mobile management entity indicates described network to delete the context that a described PDN connects, and indicate described network to set up the context that the 2nd PDN connects, realize when network is not supported same many PDN of APN connection performance, do not need UE to delete the PDN connection that original PDN connects the different signaling priority that still can set up same APN, thereby reduced the signaling consumption and the network planning workload of network, saved the APN resource.

Embodiment two

With reference to figure 5, Fig. 5 is a kind of method flow diagram that connects that the embodiment of the invention two provides, and as shown in Figure 5, said method comprising the steps of:

Step 501, subscriber equipment receives the notification message that MME sends, and carries the information that indication network is not supported the characteristic that the many PDN of single APN connect in the described notification message;

Concrete, with reference to the step 605 of figure 6, the registration that described subscriber equipment receives described MME receives request, carries the information whether indication network supports single many PDN of APN connection performance in the described request.

Step 502, it is identical that the 2nd PDN that sets up when described user equipment requests connects the corresponding APN of PDN connection that corresponding APN and described subscriber equipment set up, and first priority that second priority that described the 2nd PDN connects is connected with a described PDN is not simultaneously, described subscriber equipment is initiated the bearer update flow process, and MME is described second priority with described first priority update that a described PDN connects in order to indication.

Concrete, with reference to the step 701 of figure 7, when UE knew that network is not supported single many PDN of APN connection performance, described UE initiated the bearer update flow process, was described second priority in order to indicate described first priority update that described MME will described PDN connection.

Below with the mutual mutual flow chart of communication entities such as UE, Access Network, MME, SGW, PDN-GW, PCRF the step of Fig. 6, Fig. 7 is done further explanation.

As shown in Figure 6, Fig. 6 is a kind of method flow diagram whether network supports single many PDN of APN connection performance that obtains, and may further comprise the steps:

Step 601, UE sends register requirement to MME, if attachment flow, this message is for adhering to request; If the routing region updating flow process, this message is the routing region updating request message; If the tracking area update flow process, this message is the tracking area update request;

Step 602, described MME initiates safety and identifying procedure, and UE is carried out validity checking and safety certification, and this step is optional;

Step 603, described MME sets up or upgrades PDN and connects, and for attachment flow, newly-built PDN connects in the network; For tracking area update/routing region updating flow process, there has been the PDN of foundation to connect on the PDN-GW, only need lastest imformation, and the PDN on described MME decision renewal or the newly-built SGW connects;

Step 604, described registration and obtain user's subscription data to the user register of local, if the subscription data of described UE has been arranged on the described MME, this step also can be omitted;

Step 605, described MME sends registration and accepts message to UE, carries the indication whether network supports that the many PDN of single APN connect in the message.

Described MME notifies mode that described UE, concrete described MME notify described UE to be realized by one of following by revising existing indication or newly-increased indication:

1, the described MME registration that sends to UE accepts to carry in the message indication, and indication network does not support the many PDN of single APN to connect.Wherein do not limited for the situation of supporting the many PDN of single APN to connect, wherein a kind of situation can be: registration is accepted not carry indication in the message, shows that the many PDN of the single APN of network support connect;

2, described MME accepts to carry in the message indication in the registration that sends to UE, and the many PDN of the single APN of indication network support connect.Wherein do not limited for the situation of not supporting the many PDN of single APN to connect, wherein a kind of situation is: accept in the message when the registration that described UE receives, when not carrying indication, then network does not support the many PDN of single APN to connect.

3, described MME accepts to carry in the message indication in the registration that sends to UE, wherein should indication represent two meanings, indication network support or do not support the many PDN connections of single APN.

With reference to figure 7, Fig. 7 is a kind of method schematic diagram that connects.As shown in Figure 7, said method comprising the steps of:

Step 701, UE sends the bearing resource update request, carries the indication of signaling priority in this request message, the information such as default bearer sign that are connected with the PDN that has set up.If wherein existing P DN is connected to low priority, then the signaling priority of carrying in the bearing resource update request is designated as standard priority; If existing P DN is connected to standard priority, then the signaling priority of carrying in the bearing resource update request is designated as low priority;

Step 702, after MME received message, the signaling priority of carrying in the storing message was indicated, and gave SGW with this forwards;

Step 703-704, the signaling priority of carrying in described SGW storing message indication by the transfer of PCRF, sends to PDN-GW with the signaling priority indication of upgrading, the signaling priority indication that described PDN-GW storage is new;

Step 705-707 confirms the modification for the signaling precedence information of existing PDN connection between network and the UE.

Agreement between SGW described in the present embodiment and PDN-GW is PMIP, when being GTP between described SGW and described PDN-GW, step 703 is by step 703a, and described SGW transmits the bearing resource request message and gives PDN-GW, the new signaling precedence information that carries in the described PDN-GW storing message; Step 703b, described PDN-GW reply and upgrade bearing request message to described SGW replacement.

The invention provides a kind of method that connects, described method is when network is not supported the characteristic of the many PDN connections of single APN, initiate the bearer update flow process by subscriber equipment and upgrade the priority that the described PDN that has set up connects, realize when network is not supported same many PDN of APN connection performance, do not need UE to delete the PDN connection that original PDN connects the different signaling priority that still can set up same APN, thereby reduced the signaling consumption and the network planning workload of network, saved the APN resource.

Embodiment three

With reference to figure 8, Fig. 8 is a kind of method flow diagram that connects that the embodiment of the invention three provides.Said method comprising the steps of:

The PDN that step 801-807, UE initiate standard priority connects the request of foundation, and described MME sets up the session on SGW, PDN-GW and the PCRF;

Step 808, after MME receives that the 2nd PDN of standard priority connects the request of foundation, if the APN that the PDN that this UE has set up connects is identical with the APN that described the 2nd PDN is connected, but second priority that first priority ratio the 2nd PDN that a described PDN connects connects is low, described MME carries the priority timer in the 2nd PDN connection message information.Behind this timer expiry, second priority update that described UE need connect described the 2nd PDN is a low priority.Otherwise described MME initiates PDN connection deletion flow process and deletes the 2nd PDN connection.

Step 809-810, PDN connect foundation to be finished and bearer update.

Present embodiment provides a kind of method in order to after preventing that priority that UE connects PDN is upgraded to standard priority by low priority, for the enjoy network better service quality, the PDN of release standard priority does not connect, PDN with standard priority connects the business data packet of transmitting low priority, thereby the priority timer is set, when described priority timer expiry, indicate described MME that standard priority is updated to low priority, be that network is saved resource overhead.

Embodiment four

With reference to figure 9, Fig. 9 is a kind of method flow diagram that connects that the embodiment of the invention four provides.Said method comprising the steps of:

Step 901-905, UE initiate more new technological process of bearing resource, and the signaling priority that connects in order to the PDN that will set up changes standard priority into by low priority, and described MME upgrades the signaling priority indication on SGW, PDN-GW and the PCRF;

Step 906, receive the bearing resource update request of standard priority as MME after, if the existing signaling priority that the PDN that this UE revises connects is low priority, (Non Access Stratum NAS) carries the information that standard priority connects timer to described MME in the direct-sending message at Non-Access Stratum.Behind this timer expiry, described UE need be changeed back low priority with the priority that described PDN connects.Otherwise described UE initiates PDN connection deletion flow process and deletes this PDN connection.

Step 907: upgrade bearing response message.

Embodiment five

With reference to Figure 10, Figure 10 is a kind of equipment that connects that the embodiment of the invention five provides, and described equipment comprises with lower unit:

Judging unit 1001, be used for when network is not supported the characteristic of the many PDN connections of single APN, and the 2nd PDN that user equipment requests is set up connects corresponding APN and a PDN that described subscriber equipment has been set up and connects corresponding APND when identical, and described MME judges whether second priority of described the 2nd PDN connection is identical with first priority of described PDN connection;

If unit 1002 is set up in deletion, is used for inequality, and then described MME indicates described network to delete described PDN connection context, and indicates described network to set up described the 2nd PDN connection context.

As a kind of optional mode, described equipment also comprises:

Acquiring unit 1003 is used for described MME and obtains the characteristic whether described network supports that the many PDN of single APN connect.

Described acquiring unit 1003 specifically is used for:

Described MME sends probe requests thereby Echo Request to described SGW;

As the optional method of another kind, described equipment also comprises notification unit 1004, specifically is used for:

In conjunction with a kind of optional method and another kind of optionally method, described equipment also comprises:

Timer units 1005, be used for as if described second priority greater than described first priority, described MME starts the priority timer, and described priority timer is used for when described priority timer expiry, and indicating described MME is described first priority with described second priority update.

The invention provides a kind of equipment that connects, described equipment is when network is not supported the characteristic of the many PDN connections of single APN, whether identical by judging that the 2nd PDN that user equipment requests is set up connects the corresponding APN of PDN connection that corresponding APN and subscriber equipment set up, if it is identical, and priority difference, then mobile management entity indicates described network to delete the context that a described PDN connects, and indicate described network to set up the context that the 2nd PDN connects, realize when network is not supported same many PDN of APN connection performance, do not need UE to delete the PDN connection that original PDN connects the different signaling priority that still can set up same APN, thereby reduced the signaling consumption and the network planning workload of network, saved the APN resource.

Embodiment six

With reference to Figure 11, Figure 11 is a kind of equipment that connects that the embodiment of the invention six provides, and described equipment comprises with lower unit:

Receiving element 1101 is used for subscriber equipment and receives the notification message that MME sends, and carries the information that indication network is not supported the characteristic that the many PDN of single APN connect in the described notification message;

Bearer update unit 1102, it is identical that the 2nd PDN that is used for setting up when described user equipment requests connects the corresponding APN of PDN connection that corresponding APN and described subscriber equipment set up, and first priority that second priority that described the 2nd PDN connects is connected with a described PDN is not simultaneously, described subscriber equipment is initiated the bearer update flow process, and MME is described second priority with described first priority update that a described PDN connects in order to indication.

The invention provides a kind of equipment that connects, described equipment is when network is not supported the characteristic of the many PDN connections of single APN, initiate the bearer update flow process by subscriber equipment and upgrade the priority that the described PDN that has set up connects, realize when network is not supported same many PDN of APN connection performance, do not need UE to delete the PDN connection that original PDN connects the different signaling priority that still can set up same APN, thereby reduced the signaling consumption and the network planning workload of network, saved the APN resource.

Embodiment seven

With reference to Figure 12, Figure 12 is the structure drawing of device of a kind of mobile management entity of providing of the embodiment of the invention seven.With reference to Figure 12, Figure 12 is a kind of mobile management entity MME 1200 that the embodiment of the invention provides, and the specific embodiment of the invention is not done qualification to the specific implementation of the described network equipment.Described MME1200 comprises:

Processor (processor) 1201, communication interface (Communications Interface) 1202, memory (memory) 1203, bus 1204.

Processor 1201, communication interface 1202, memory 1203 is finished mutual communication by bus 1204.

Communication interface 1202 is used for communicating with subscriber equipment;

Processor 1201 is used for executive program.

Particularly, program can comprise program code, and described program code comprises computer-managed instruction.

Processor 1201 may be a central processor CPU, or specific integrated circuit ASIC(Application Specific Integrated Circuit), or be configured to implement one or more integrated circuits of the embodiment of the invention.

Memory 1203 is used to deposit program.Memory 1203 may comprise the high-speed RAM memory, also may also comprise nonvolatile memory (non-volatile memory).Program specifically can comprise:

As a kind of optional method, described method also comprises: described MME obtains the characteristic whether described network supports that the many PDN of single APN connect.

Described MME sends to gateway SGW and sets up the 3rd PDN connection requests, and the corresponding APN of described the 3rd PDN connection is connected corresponding APN with a described PDN who has set up identical;

Described MME sends probe requests thereby Echo Request to described SGW;

As the optional method of another kind, described method also comprises:

In conjunction with a kind of optional and another kind of optionally method, described method also comprises:

Embodiment eight

With reference to Figure 13, Figure 13 is the structure drawing of device of a kind of subscriber equipment of providing of the embodiment of the invention eight.With reference to Figure 13, Figure 13 is a kind of user equipment (UE) 1300 that the embodiment of the invention provides, and the specific embodiment of the invention is not done qualification to the specific implementation of the described network equipment.Described UE1300 comprises:

Processor (processor) 1301, communication interface (Communications Interface) 1302, memory (memory) 1303, bus 1304.

Processor 1301, communication interface 1302, memory 1303 is finished mutual communication by bus 1304.

Communication interface 1302 is used for communicating with MME;

Processor 1301 is used for executive program.

Processor 1301 may be a central processor CPU, or specific integrated circuit ASIC(Application Specific Integrated Circuit), or be configured to implement one or more integrated circuits of the embodiment of the invention.

Memory 1303 is used to deposit program.Memory 1303 may comprise the high-speed RAM memory, also may also comprise nonvolatile memory (non-volatile memory).Program specifically can comprise:

It is identical that the 2nd PDN that sets up when described user equipment requests connects the corresponding APN of PDN connection that corresponding APN and described subscriber equipment set up, and first priority that second priority that described the 2nd PDN connects is connected with a described PDN is not simultaneously, described subscriber equipment is initiated the bearer update flow process, and MME is described first priority with described second priority update that described the 2nd PDN connects in order to indication.

The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims

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

2. method according to claim 1 is characterized in that, described method also comprises: described MME obtains the characteristic whether described network supports that the many PDN of single APN connect.

3. method according to claim 2 is characterized in that, described MME obtains the characteristic whether described network supports that the many PDN of single APN connect, and comprising:

4. method according to claim 2 is characterized in that, described MME obtains the characteristic whether network supports that the many PDN of single APN connect, and comprising:

Described MME sends probe requests thereby Echo Request to described SGW;

5. according to any described method of claim 1-4, it is characterized in that described method also comprises:

6. according to any described method of claim 1-5, it is characterized in that described method also comprises:

7. a method that connects is characterized in that, described method comprises:

8. an equipment that connects is characterized in that, described equipment comprises:

9. equipment according to claim 8 is characterized in that, described equipment also comprises:

10. equipment according to claim 9 is characterized in that, described acquiring unit specifically is used for:

11. equipment according to claim 9 is characterized in that, described acquiring unit specifically is used for:

Described MME sends probe requests thereby Echo Request to described SGW;

12. any according to Claim 8-11 described equipment is characterized in that described equipment also comprises notification unit, specifically is used for:

13. any according to Claim 8-12 described equipment is characterized in that described equipment also comprises:

14. an equipment that connects is characterized in that, described equipment comprises: