CN101848511B - Business switching method, business information control method, related apparatus and system - Google Patents
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- H—ELECTRICITY
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Abstract
The embodiment of the invention provides a business switching method, a business information control method, a related apparatus and a system, wherein the business switching method comprises the steps: receiving indicative information which indicates that resources of user equipment UE in current network need to be released owing to network side; and when the UE accesses in a multi-access mode, switching a business related to the released resources into other network to which the UE accesses according to the indicative information. According to the technical proposal provided by the embodiment of the invention, in case that the UE accesses to the network in the multi-access mode, the network side switches the business of the UE in the current network into other network to which the UE accesses if the UE cannot access to the current network, thereby ensuring business continuity.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a service switching method, a service information control method, a related device, and a system.
Background
In a third generation partnership project 3GPP Network, when a UE (User Equipment) is limited in a current access technology or access location or a Network side cannot provide sufficient resources, and the like, a mobility management Network element sends a Detach Request (Detach Request) to the UE, the mobility management Network element sends a bearer deletion Request to a PDN GW (Packet Data Network Gateway), and the PDN GW deletes all service information of the UE and releases all bearer resources of the UE, which is also the same in a non-third generation partnership project non-3 GPP Network. There is currently proposed a requirement that the UE can perform services in both a 3GPP network and a non-3 GPP network, in which case when the UE cannot access a current network (such as a 3GPP network or a non-3 GPP network), no processing scheme for service handover is provided on the network side.
Disclosure of Invention
The embodiment of the invention provides a service switching method, a service information control method, related equipment and a system.
In view of this, the embodiment of the present invention provides:
a service switching method comprises the following steps:
receiving indication information, wherein the indication information indicates that resources of User Equipment (UE) in a current network need to be released due to network side reasons;
when the UE accesses in a multi-access mode, switching the service related to the released resource to another network accessed by the UE according to the indication information, where switching the service related to the released resource to another network accessed by the UE includes:
a packet data network gateway PDN GW sends information indicating that the current network can not provide service for UE to a policy and charging rule function PCRF; receiving Policy and Charging Control (PCC) rules issued by a Policy and Charging Rules Function (PCRF) and recommending the access types of other networks used by the UE; according to the PCC rule, reserving resources in the other networks for the UE, and switching the service to the other networks;
or,
the PDN GW determines other networks to which the service needs to be switched, reserves resources for the UE in the other networks according to PCC rules generated by the PDN GW, and switches the service to the other networks;
or,
the PDN GW determines other networks to which the service needs to be switched, and requests a PCC rule to the PCRF; receiving a PCC rule sent by the PCRF; and reserving resources for the UE in the other networks according to the received PCC rules, and switching services into the other networks.
A service information control method comprises the following steps:
acquiring an access mode of UE accessing a network;
if the access mode is multi-access mode access, when the resource of the UE in the current network needs to be released, sending indication information indicating that the service information of the UE on the PDN GW is not deleted, so that the PDNGW reserves the service information of the UE.
A gateway device, comprising:
a receiving unit, configured to receive indication information, where the indication information indicates that resources of a user equipment UE in a current network need to be released due to a network side;
the first judging unit is used for judging whether the UE is accessed in a multi-access mode;
a switching unit, configured to switch, when the UE accesses in a multiple access mode, a service related to the released resource to another network to which the UE accesses according to the indication information;
the switching unit includes:
a first sending unit, configured to send, to the PCRF, information indicating that the current network cannot provide a service for the UE;
a first receiving unit, configured to receive a PCC rule issued by a PCRF and an access type of another network recommended to be used by the UE;
a first processing unit, configured to reserve resources for the UE in the other network according to the PCC rule, and switch a service to the other network;
or,
the switching unit includes:
a determining unit, configured to determine another network to which the service needs to be switched;
a second processing unit, configured to generate a PCC rule, reserve resources for the UE in the other network according to the PCC rule, and switch the service to the other network;
or,
the switching unit includes:
a determining unit, configured to determine another network to which the service needs to be switched;
a second sending unit, configured to send a message requesting PCC rules to the PCRF;
a second receiving unit, configured to receive the PCC rule sent by the PCRF;
a third processing unit, configured to reserve resources for the UE in the other network according to the PCC rule, and switch the service to the other network.
A network device, comprising:
a receiving unit, configured to receive a message notifying a UE of an access mode for accessing a network;
a sending unit, configured to send, when it is required to release resources of a UE in a current network, indication information indicating that service information of the UE on a PDN GW is not to be deleted when the UE accesses in a multi-access mode.
A user equipment, comprising:
a receiving unit, configured to receive a resource deletion message for a current network, where the message is sent by a network side;
and the sending unit is used for initiating resource establishment requests in other networks after receiving the resource deletion message.
A network system, comprising: a PDN GW and a PCRF,
the PDN GW is configured to receive indication information, where the indication information indicates that resources of a user equipment UE in a current network need to be released due to a network side, receive a PCC rule issued by a PCRF when the UE accesses in a multi-access mode, and switch, according to the PCC rule, a service related to the released resources to another network to which the UE accesses;
the PDN GW includes:
a receiving unit, configured to receive indication information, where the indication information indicates that resources of a user equipment UE in a current network need to be released due to a network side;
the first judging unit is used for judging whether the UE is accessed in a multi-access mode;
a switching unit, configured to switch, when the UE accesses in a multiple access mode, a service related to the released resource to another network to which the UE accesses according to the indication information;
the switching unit includes:
a first sending unit, configured to send, to the PCRF, information indicating that the current network cannot provide a service for the UE;
a first receiving unit, configured to receive a PCC rule issued by a PCRF and an access type of another network recommended to be used by the UE;
a first processing unit, configured to reserve resources for the UE in the other network according to the PCC rule, and switch a service to the other network;
or,
the switching unit includes:
a determining unit, configured to determine another network to which the service needs to be switched;
a second processing unit, configured to generate a PCC rule, reserve resources for the UE in the other network according to the PCC rule, and switch the service to the other network;
or,
the switching unit includes:
a determining unit, configured to determine another network to which the service needs to be switched;
a second sending unit, configured to send a message requesting PCC rules to the PCRF;
a second receiving unit, configured to receive the PCC rule sent by the PCRF;
a third processing unit, configured to reserve resources for the UE in the other network according to the PCC rule, and switch the service to the other network;
and the PCRF is used for generating PCC rules and sending the PCC rules to the PDN GW, and the PCRF is also used for sending the recommended access types of other networks used by the UE to the PDN GW.
A network system, comprising: the BBERF and the PCRF are combined,
the BBERF is used for acquiring an access mode of the UE for accessing the network; if the access mode is multi-access mode access, when the resource of the UE in the current network needs to be released, sending indication information indicating that the service information of the UE on the PDN GW is not deleted to the PCRF;
and the PCRF is used for informing the PDN GW to reserve the service information of the UE after receiving the indication information indicating that the service information of the UE on the PDN GW is not deleted.
In the embodiment of the invention, when the PDN GW receives an instruction that the resources of the UE in the current network need to be released due to network side reasons, if the UE accesses the network in a multi-access mode, the service transmitted by the UE in the current network is switched to other networks accessed by the UE, so that the continuity of the service is ensured.
In the embodiment of the invention, after knowing that the UE is accessed to a plurality of networks in a multi-access mode, the network equipment sends the indication information indicating that the service information of the UE on the PDN GW is not deleted when the bearing resources of the UE in the current network need to be released, so that the PDN GW reserves the service information of the UE.
Drawings
Fig. 1 is a block diagram of a core network of a wireless evolved network;
fig. 2 is a signaling diagram of a service switching method according to a second embodiment of the present invention;
fig. 3 is a signaling diagram of a service switching method according to a third embodiment of the present invention;
fig. 4 is a signaling diagram of a service switching method according to a fourth embodiment of the present invention;
fig. 5 is a signaling diagram of a service switching method according to a fifth embodiment of the present invention;
fig. 6 is a signaling diagram of a service information control method according to a sixth embodiment of the present invention;
fig. 7 is a structural diagram of a gateway device according to an eighth embodiment of the present invention;
fig. 8 is a diagram illustrating a structure of a network device according to a ninth embodiment of the present invention;
fig. 9 is a structural diagram of a user equipment according to a tenth embodiment of the present invention.
Detailed Description
The architecture of the 3GPP network in the embodiment of the present invention is shown in fig. 1, and a core network of a wireless evolved network mainly includes three logic functions, namely, an MME (Mobility Management Entity), an S-GW (Serving Gateway), and a PDN GW (PDN Gateway), where the MME is responsible for functions such as NAS (Non Access Stratum) signaling, NAS signaling encryption, roaming, tracking, and the like, and allocates a user temporary identity, a security function, and the like, and is equivalent to a control plane portion of an SGSN (Serving GPRS Support Node) inside a current UMT S (Universal Mobile Telecommunications System). The S-GW is responsible for local mobility anchor points, mobility anchor points in the 3GPP system and related information of legal monitoring; the PDN GW is responsible for policy enforcement and charging and lawful interception related functions. The HSS (Home Subscriber Server) is used to store Subscriber subscription information.
The first embodiment is as follows:
an embodiment of the present invention provides a service switching method, where the method includes: a packet data network gateway PDN GW receives indication information, wherein the indication information indicates that resources of user equipment UE in a current network need to be released due to network side reasons; and when the UE accesses in a multi-access mode, switching the service related to the released resource to other networks accessed by the UE according to the indication information.
The services switched to the other network to which the UE accesses may be all services related to the resources that need to be released in the current network, or may be part of services related to the resources that need to be released in the current network, without affecting the implementation of the present invention.
The current network may be a 3GPP network in the following embodiments two to five, or may be a non-3 GPP network.
The service information comprises: filter tuples of traffic flows, etc.
In the first embodiment of the present invention, when the PDN GW receives indication information indicating that resources of the UE in the current network need to be released due to a network side, if the UE accesses the network in the multi-access mode, the service transmitted by the UE in the current network is switched to another network to which the UE accesses, so as to ensure continuity of the service.
In this and subsequent embodiments, the UE accesses the finger in the multi-access mode: the UE may access multiple networks simultaneously for the same APN, such as the UE accessing a 3GPP network and/or a non-3 GPP network simultaneously.
Example two:
referring to fig. 2, a second embodiment of the present invention provides a service switching method, in which an HSS triggers a separation procedure of a UE in a 3GPP network, and the method includes:
b11, if the subscription data of the UE changes, the HSS sends new subscription data of the UE to the mobility management network element.
It should be noted that: in some cases, the AAA (Authentication, Authorization, Accounting, Authentication, Authorization, and Accounting) server shares a physical network element with the HSS.
B12, according to the new subscription data of the UE, the mobility management network element judges that the UE cannot continue to access the current network, and initiates a detach request to the UE.
B13, the mobility management network element sends a bearer deletion request message to the PDN GW through the S-GW, where the message carries indication information, the indication information indicates that bearer resources of the UE in the current network need to be released due to a network side reason, and the indication information may be a Cause value for deleting bearers, where the network side reason includes but is not limited to UE access location limitation or UE access technology limitation.
It should be noted that B12 and B13 have no timing sequence in execution, and B13 may be executed first and then B12 may be executed, or B12 and B13 may be executed simultaneously, which does not affect the implementation of the present invention.
B14, PDN GW judges whether the UE is accessed in the multi-mode access mode, if not, the service information of the UE is deleted, the bearing resource of the UE is released, and the process is ended; if so, sending an IP CAN session modification request message to the PCRF, wherein the message CAN carry indication information indicating that the current network cannot provide service for the UE.
And B15, after receiving the IP CAN session modification message, the PCRF generates a PCC rule related to the IP CAN session according to at least one of the information of the current network condition, the subscription data of the UE, the operator policy and the like, and sends an IP CAN session modification response message to the PDN GW, wherein the message carries the PCC rule. In this step, the PCRF recommends that the service performed in the current network CAN be switched to the target network, that is, the service CAN be continuously performed in the target network, and the access type of the target network CAN also be carried in the IP CAN session modification response message.
Or, in step B14, the PDN GW determines that it is necessary to switch the service in the current network to the target network according to at least one of the service information of the UE, the operator policy, the resource condition of another network, and the like, and sends an IP CAN session modification message to the PCRF to request the PCC rule related to the IP CAN session; and B15, the PCRF generates PCC rules related to the IP CAN session and sends the PCC rules to the PDNGW, and the execution continues to B16.
Or configuring a static PCC rule on the PDN GW, determining that the service in the current network needs to be switched to the target network by the PDN GW according to at least one of the service information of the UE, the operator policy, the resource condition of other networks and other information, generating the PCC rule, reserving resources in the target network for the service according to the PCC rule, releasing the resources in the current network after the service is switched to the target network, continuing to execute the B16 to send a bearer deletion response message to the S-GW, and sending the bearer deletion response message to the mobility management network element by the S-GW.
B16, PDN GW distributes new bearing resource for UE according to PCC rule related to IP CAN conversation, sends bearing deleting response message to S-GW, and S-GW sends bearing deleting response message to mobile management network element.
B17, the UE sends a detach accept message to the mobility management network element.
B18, if there is BBERF in the target network (if it is a non-3 GPP network, the access gateway may be BBERF), the PCRF sends a re-authorization request to the BBERF, where the re-authorization request carries PCC rules related to the gateway control session.
B19, BBERF initiates a special resource establishing flow according to the PCC rule related to the gateway control session.
B110, BBERF sends re-authorization response to PCRF.
In the second embodiment of the present invention, when the network side initiates the separation process, the mobility management network element sends a reason indication to the PDN GW, and if the reason indication indicates that the bearer resource of the UE in the current network needs to be released due to the reason of the network side, the PDN GW determines that the UE is accessed in the multi-access mode, does not delete the service information of the UE, and establishes a resource for the UE in another network, so as to switch the service in the current network to another network, so as to ensure the continuity of the service.
Example three:
referring to fig. 3, a third embodiment of the present invention provides a service switching method, in which a core network side triggers a separation process of a UE in a 3GPP network, and the method includes:
B21-B23 is the same as B11-B13.
B24, PDN GW starts timer when receiving the request message of deleting load bearing, and waits for UE to initiate the request message of switching resource in non-3 GPP network.
B25-B26, if the timer is overtime, the resource switching request of the UE is not received (the resource switching request is used for requesting to switch the service in the current network to the target network), the PDN GW deletes the stored service information of the UE, releases the resource distributed for the UE in the current network, sends an IP CAN session modification request message to the PCRF, and informs the PCRF to delete the PCC rule corresponding to the resource; if the timer is overtime, the PDN GW receives a resource switching request of the UE, the PDN GW sends an IP CAN session modification request message to the PCRF, an access type change event CAN be reported in the message, the PCRF generates a PCC rule related to the IP CAN session, and sends an IP CAN session modification response message to the PDN GW, wherein the PCC rule is carried in the IP CAN session modification response message, and the PDN GW reserves resources for the UE in a target network according to the PCC rule related to the IP CAN session and switches the service into the target network;
or configuring a static PCC rule on the PDN GW, if the resource switching request of the UE is not received before the timer is overtime, deleting the stored service information of the UE by the PDN GW, and releasing the resources distributed to the UE in the current network; if the timer is overtime, a resource switching request of the UE is received, the service information of the UE is reserved, a target network to be switched is determined according to the resource switching request of the UE, a PCC rule is generated, resources are reserved in the target network for the UE according to the PCC rule, and the service is switched to the target network.
B27, PDN GW sends response message of deleting load to S-GW, S-GW sends response message of deleting load to mobile management network element.
B28, the UE sends a detach accept message to the mobility management network element. If the UE is accessed in a multi-access mode, the UE can select to initiate a resource establishment request in other networks and establish resources for the released service.
In the third embodiment of the present invention, when the network side initiates the separation process, the mobility management network element sends a reason indication to the PDN GW, if the reason indication indicates that the bearer resource of the UE in the current network needs to be released due to the reason of the network side, the PDN GW starts a timer, and if a resource switching request sent by the UE is received before the timer expires, service information of the UE is not deleted, and a resource is established for the UE in another network, so that a service in the current network is switched to the other network, thereby ensuring continuity of the service.
The second embodiment and the third embodiment of the present invention describe that the bearer resource of the UE in the 3GPP network needs to be released due to the network side, if the bearer resource of the UE in the non-3 GPP network needs to be released due to the network side, when the AAA server/HSS initiates the detach procedure, the access gateway sends a registration revocation message or a proxy binding update message to the PDN GW, where the message carries indication information indicating that the bearer resource of the UE in the non-3 GPP network needs to be released due to the network side, and a processing method of the PDN GW corresponds to the related descriptions in the second embodiment and the third embodiment, and is not described herein again.
It should be noted that: the second and third embodiments are not limited to the separation procedure initiated by the core network side. In the process of UE service, if the access network element/serving gateway initiates a bearer release procedure due to reasons of insufficient resources and the like on the network side, which results in that the service of the UE cannot be performed in the current network, the PDNGW may also interact with the PCRF to perform service handover, or the PDN GW configures a static PCC rule, and directly switches the data flow to the target network.
In addition: in the process of switching, if the network side access network element/serving gateway resource to which the service should be switched is insufficient or other network side reasons, the UE initiates a bearer release procedure, so that the service of the UE cannot be performed in the network, and the PDN GW may also interact with the PCRF to switch the service, or the PDN GW configures a static PCC rule, and directly switches the data stream to another network.
Therefore, the fourth and fifth embodiments and the following embodiments are applicable to the case that the resources allocated to the user are released due to the network side, where the network side includes: the AAA server/HSS initiates a separation process, the access network element/service gateway is insufficient, or the network side performs admission control on the UE, the PDN GW can inform the PCRF, the PCRF determines whether to switch the service to other networks and the switched network, and the PDN GW can also determine by itself.
Example four:
referring to fig. 4, a fourth embodiment of the present invention provides a service switching method, where an access network side in a 3GPP network initiates a switching procedure or a bearer deletion procedure, including the following steps:
c11, the access network element initiates a handover procedure or the evolved nodeb eNodeB initiates a bearer deletion procedure.
The step can be applied to the process that in the service process of the UE, due to insufficient resources, the access network side releases part of the bearer of the UE, so that some services of the UE are interrupted, and the access network element initiates a handover process or the eNodeB initiates a bearer deletion process.
Or, in the process of switching, if the network side access network element/serving gateway resource to which the service should be switched is insufficient, the access network element initiates a switching process or the eNodeB initiates a bearer deletion process, where part of the bearer of the UE needs to be released.
C12, the mobility management network element sends a request message for deleting the bearer to the PDN GW through the S-GW, where the message carries indication information, the indication information indicates that the bearer resource of the UE in the current network needs to be released due to a network side reason, and the indication information may be a Cause value of Cause of Cause.
C13-C14, PDN GW judges whether the UE is accessed in the multi-mode access mode, if not, the service information of the UE is deleted, the bearing resource of the UE is released, and the process is ended; if so, sending an IP CAN session modification request message to the PCRF, wherein the message CAN carry indication information indicating that the current network cannot provide service for the UE. After receiving the IP CAN session modification message, the PCRF generates a PCC rule related to the IP CAN session according to at least one of the information of the current network condition, the subscription data of the UE, the operator policy and the like, and sends an IP CAN session modification response message to the PDN GW, wherein the message carries the PCC rule.
Or, the PDN GW determines that it is necessary to switch the service in the current network to the target network according to at least one of the operator policy, the resource condition of the other network, and the service information of the UE, sends an IP CAN session modification message to the PCRF to request the PCC rule related to the IP CAN session, the PCRF generates the PCC rule related to the IP CAN session and sends the PCC rule to the PDN GW, and then executes C15.
Or configuring a static PCC rule on the PDN GW, determining that the service in the current network needs to be switched to the target network by the PDN GW according to at least one of information such as an operator policy and resource conditions of other networks and service information of the UE, generating the PCC rule, reserving resources in the target network for the service according to the PCC rule, releasing the resources in the current network after the service is switched to the target network, and then continuing to execute a subsequent bearer deletion response message sent by the PDN GW in C15 to the S-GW.
C15, PDN GW allocates new bearing resource for UE in the target network according to PCC rule related to IP CAN conversation, sends response message of deleting bearing to S-GW, and S-GW sends response message of deleting bearing to mobile management network element.
The delete bearer response message may carry indication information "Resource Allocated" to indicate that the bearer Resource has been reserved for the UE in another network, and the delete bearer response message may also carry an access type of a target network that reserves the bearer Resource for the UE, or a combination of the two types of access types.
C16, the mobility management network element sends a bearer deletion request to the UE, where the bearer deletion request carries "Resource Allocated" or an access type of a target network that reserves bearer resources for the UE, or a combination of the two.
And C17, the UE sends a bearer deletion confirmation to the mobility management network element. If the bearer deletion request does not carry the access type of the target network reserving bearer resources for the UE and the UE is accessed in the multi-access mode, the UE may initiate a resource establishment request in another network to establish resources for the service.
If a BBERF exists in the network that reserves the bearer resource for the UE (if the network is a non-3 GPP network, the access gateway may be a BBERF), the PCRF sends a PCC rule related to the gateway control session to the BBERF, and the BBERF executes the PCC rule to initiate a resource establishment procedure.
In the fourth embodiment of the present invention, when the access network element initiates a handover procedure or the eNodeB initiates a bearer deletion procedure, the mobility management network element sends a reason indication to the PDN GW, and if the reason indication indicates that a bearer resource of the UE in the current network needs to be released due to a network side reason, the PDN GW determines that the service information of the UE is not deleted after the UE is accessed in the multi-access mode, and establishes a resource for the UE in another network, so as to switch the service transmitted in the current network to another network, thereby ensuring continuity of the service.
Example five:
referring to fig. 5, an embodiment of the present invention provides a service switching method, where an access network side initiates a switching procedure or a bearer deletion procedure, including the following steps:
c21, the access network element initiates a handover procedure or the evolved nodeb eNodeB initiates a bearer deletion procedure.
C22, the mobility management network element initiates a bearer deletion request message to the PDN GW through the S-GW, where the message carries indication information, where the indication information indicates that bearer resources of the UE in the current network need to be released due to a network side, and the indication information may be a Cause value of Cause.
C23-C24, PDN GW starts a timer, an IP CAN session modification request message is initiated to PCRF, PCRF recommends that the service in the current network needs to be switched to a target network, and an IP CAN session modification response message is sent to PDN GW, wherein the IP CAN session modification response message carries the access type of the target network recommended by PCRF.
In this step, the PDN GW may decide to switch the service in the current network to the target network by itself, without affecting the implementation of the present invention.
C25, the PDN GW sending a bearer deletion response message to the mobility management network element, where the bearer deletion response message carries indication information, where the indication information indicates that the network side retains the service information of the UE, and the bearer deletion response message may also carry an access type of the target network.
C26, the mobility management network element sends a bearer deletion request message to the UE, where the bearer deletion request message carries the indication information and the access type of the target network.
C27, the UE sends a bearer deletion response acknowledgement to the mobility management network element.
Because the UE receives the indication information indicating that the network side reserves the service information of the UE, and the UE knows that the network side does not delete the service information of the UE, the UE may initiate a resource switching request, where the resource switching request is used to request to switch the service in the current network to the target network.
C28-C29, if the timer is overtime, the resource switching request of UE is not received, PDNGW deletes the stored service information of UE, releases the resource distributed for UE in the current network, sends IP CAN conversation modification request information to PCRF, informs PCRF to release PCC rules corresponding to the deleted resource; if the timer is overtime, the PDN GW receives a resource switching request of the UE, the PDN GW sends an IP CAN session modification request message to the PCRF, an access type change event CAN be reported in the message, the PCRF generates a PCC rule related to the IP CAN session, an IPCAN session modification response message is sent to the PDN GW, the PCC rule is carried in the IP CAN session modification response message, the PDN GW reserves resources for the UE in a target network according to the PCC rule, and the service is switched to the target network;
or configuring a static PCC rule on the PDN GW, if the resource switching request of the UE is not received before the timer is overtime, deleting the stored service information of the UE by the PDN GW, and releasing the resources distributed to the UE in the current network; if the timer is overtime, a resource switching request of the UE is received, the service information of the UE is reserved, a target network to be switched is determined according to the resource switching request of the UE, a PCC rule is generated, resources are reserved in the target network for the UE according to the PCC rule, and the service is switched to the target network.
In the fifth embodiment of the present invention, when an access network element initiates a handover procedure or an eNodeB initiates a bearer deletion procedure, a mobility management network element sends a reason indication to a PDN GW, and if the reason indication indicates that a bearer resource of a UE in a current network needs to be released due to a network side reason, the PDN GW starts a timer, and if a resource handover request sent by the UE is received before the timer expires, service information of the UE is not deleted and a resource is established for the UE in another network, so that a service transmitted in the current network is switched to the other network, thereby ensuring continuity of the service.
Example six:
referring to fig. 6, in the method, a mobility management network element learns an access mode of a UE accessing a network, and if the access mode is a multi-access mode access, notifies a PDN GW that service information of the UE is not to be deleted, where the method, the mobility management network element learns the access mode of the UE accessing the network, and specifically, the following method may be used:
if the PDNGW determines that the UE accesses in the multiple access Mode in the bearer creation procedure (default bearer creation procedure or dedicated bearer creation procedure), the PDNGW carries indication information "multiple access Mode" in a bearer creation response message (default bearer creation response or dedicated bearer creation response) sent to the mobility management network element, and notifies the mobility management network element that the UE accesses in the multiple access Mode. If the UE is accessed in a Multi-access mode after establishing PDN connection in a network, the PDN GW initiates a bearer modification process (a default bearer modification process or a special bearer modification process), carries indication information 'Multi Access mode' in a bearer modification request message (a default bearer modification request or a special bearer modification request), and informs a mobility management network element UE of accessing in the Multi-access mode; and if the UE is not accessed in the multi-Access Mode any more, the PDN GW initiates a bearer modification process, carries indication information 'Single Access Mode' in a bearer modification request message (a default bearer modification request or a special bearer modification request) and informs a mobility management network element that the UE is accessed in the Single-Access Mode.
The service information control method in this embodiment specifically includes the following steps:
d1, the HSS initiates a detach procedure, the access network element initiates a handover procedure, or the eNodeB initiates a bearer deletion procedure.
D2-D3, the mobility management network element sends a bearer deletion request message to the serving gateway, if the UE accesses in a multi-access mode, the message carries indication information, and the indication information informs the serving gateway not to delete the bearer of the PDN GW; if the UE accesses in the single access mode, the message carries indication information to inform the serving gateway to delete the bearer of the PDN GW.
Or, the mobility management network element sends a bearer deletion request message to the serving gateway, where the bearer deletion request message carries indication information, and the indication information is used to indicate the PDN GW to reserve service information of the UE; and the service gateway sends a bearing deletion request message to the PDN GW, wherein the message carries the indication information. And if the UE is accessed in the single access mode, the bearer deletion request message does not carry indication information or carries indication information indicating deletion of the bearer of the PDN GW. In the embodiment of the invention, the UE is accessed in a multi-access mode, so the bearing deletion request message carries indication information for indicating the PDN GW to reserve the service information of the UE. And after receiving the bearing deletion request message, the PDN GW deletes the bearing resources distributed for the UE in the current network.
Further, the PDN GW may also reestablish resources for the UE in other networks, and please refer to the corresponding description in embodiment two or third for the way that the PDN GW reestablishes resources for the UE, which is not described herein again.
D4, the mobility management network element sends a request for deleting the bearer to the UE to request for deleting the bearer in the current network.
And D5, the UE initiates a bearer deletion determination to the mobility management network element. If the access is in the multi-access mode, the UE can initiate a resource establishment request in other networks to establish resources for the service.
In the sixth embodiment of the present invention, after learning that the UE is accessed in the multi-access mode, the mobility management network element notifies the PDN GW not to delete the service information of the UE, so as to reserve resources for the UE in other networks according to the service information of the UE, and switch the service in the current network to other networks, so as to ensure the continuity of the service.
Example seven:
in the method, after a BBERF (serving gateway in a 3GPP network or access gateway in a non-3 GPP network) acquires an access mode of a UE accessing a network, a PCRF notifies a PDN GW of a processing mode of service information about the UE, and in the method, the BBERF acquires the access mode of the UE accessing the network, the following mode may be used:
when the UE accesses in a multi-access mode, the PCRF carries indication information in the re-authentication request message, the indication information is used for informing the BBERF that the UE accesses in the multi-access mode, and if the UE cancels the multi-access mode, the PCRF carries the indication information in the re-authentication request message and informs the BBERF that the UE accesses in a single-access mode.
The service information control method in this embodiment includes:
no matter the network is a 3GPP network or a non-3 GPP network, when UE needs to be separated from the current network, if the UE is accessed in a multi-access mode, a BBERF in the current network can inform a PDN GW not to delete the service information of the UE;
or the BBERF sends a message indicating that the service information of the UE on the PDN GW is not deleted to the PCRF, the PCRF starts a timer and judges whether a message requesting a PCC rule sent by the PDN GW is received within a preset time period (the message requesting the PCC rule is triggered by the fact that the UE initiates a resource establishment request on other networks), if the message requesting the PCC rule sent by the PDN GW is received, the PDN GW is informed to keep the service information of the UE, and if not, the PDN GW is informed to delete the service information of the UE;
or the BBERF sends a message indicating that the service information of the UE on the PDN GW is not deleted to the PCRF, and the PCRF directly informs the PDN GW to keep the service information of the UE;
or the BBERF sends a message indicating that the service information of the UE on the PDN GW is not deleted to the PCRF, the PCRF informs the PDN GW that the service resources in the current network are deleted, the message carries the service information of the UE so as to inform the PDN GW that the service resources of the services are deleted, the PDN GW starts a timer and judges whether a resource establishment request of the UE is received within a preset time period, if so, the service information of the UE is reserved, otherwise, the service information of the UE is deleted.
In the seventh embodiment of the present invention, after knowing that the UE is accessed in the multi-access mode, the BBERF directly notifies the PDN GW not to delete the service information of the UE or notifies the PDN GW not to delete the service information of the UE through the PCRF, so that the PDN GW reserves resources for the UE in other networks according to the service information of the UE, and switches the service in the current network to other networks, thereby ensuring the continuity of the service.
Example eight:
referring to fig. 7, an eighth embodiment of the present invention provides a gateway device, including:
a receiving unit 701, configured to receive indication information, where the indication information indicates that resources of a user equipment UE in a current network need to be released due to a network side;
a first determining unit 702, configured to determine whether the UE accesses in a multi-access mode;
a switching unit 703, configured to switch, when the UE accesses in the multiple access mode, a service transmitted by the UE in the current network to another network to which the UE accesses according to the indication information.
Wherein the switching unit 703 includes: a first sending unit, configured to send, to the PCRF, information indicating that the current network cannot provide a service for the UE; the first receiving unit is used for receiving PCC rules issued by the PCRF and recommending the access types of other networks used by the UE; and a first processing unit, configured to reserve resources for the UE in another network according to the PCC rule, and switch a service to the other network.
Alternatively, the switching unit 703 includes: a determining unit, configured to determine another network to which the service needs to be switched; and a second processing unit, configured to generate a PCC rule, reserve resources for the UE in the other network according to the PCC rule, and switch the service to the other network.
Alternatively, the switching unit 703 includes: a determining unit, configured to determine another network to which the service needs to be switched; a second sending unit, configured to send a message requesting PCC rules to the PCRF; a second receiving unit, configured to receive the PCC rule sent by the PCRF; and a third processing unit, configured to reserve resources for the UE in another network according to the PCC rule, and switch the service to the another network.
The gateway device further includes:
a third sending unit, configured to send, to the UE in the bearer deletion procedure, indication information indicating that resources have been reserved for the UE in another network.
Or, the gateway device further includes a fourth sending unit, a second determining unit, and a deleting unit, where the fourth sending unit sends, to the UE in a bearer deletion procedure, indication information indicating that a network side reserves service information of the UE, and triggers the UE to initiate the resource switching request; a second judging unit judges whether a resource switching request sent by the UE is received within a preset time period; the deleting unit deletes the service information of the UE when the judgment result of the second judging unit is negative; when the UE accesses in the multiple access mode and the determination result of the second determining unit is yes, the switching unit 703 switches the service transmitted by the UE in the current network to another network to which the UE accesses.
In the eighth embodiment of the present invention, when receiving an indication that bearer resources of a UE in a current network need to be released due to a network side, a gateway device reserves service information of the UE if the UE accesses the network in a multi-access mode; the gateway device establishes resources for the UE in other networks so as to switch the service transmitted in the current network to other networks, thereby ensuring the continuity of the service.
Example nine:
referring to fig. 8, a network device according to a ninth embodiment of the present invention includes:
a receiving unit 801, configured to receive a message notifying a UE of an access method for accessing a network;
a sending unit 802, configured to send, when bearer resources of a UE in a current network need to be released, indication information indicating that service information of the UE on a PDN GW is not to be deleted when the UE accesses in a multi-access mode, and send indication information indicating that service information of the UE on the PDN GW is to be deleted when the UE accesses in a single-access mode.
The network device is a mobility management network element, and the receiving unit 801 is configured to receive indication information, which is sent by the PDNGW in a bearer creation procedure or a bearer modification procedure and indicates the UE to access the network in the multi-access mode. The sending unit 802 is configured to send a bearer deletion request message to a serving gateway when the UE needs to release bearer resources of the UE in a current network and accesses in a multi-access mode, where the bearer deletion request message carries indication information indicating that the serving gateway does not delete a bearer of the PDN GW; or, the bearer deletion request message carries indication information indicating that the PDN GW retains the service information of the UE.
Or, the network device is a BBERF, and the receiving unit 801 is configured to receive a re-authentication request message sent by the PCRF, where the re-authentication request message carries an access manner of the UE. The sending unit 802 is configured to send a bearer deletion request message to the PDN GW, where the bearer deletion request message carries indication information indicating that the PDN GW retains the service information of the UE; or, the sending unit 802 is configured to send, to the PCRF, indication information indicating that the PDN GW reserves the service information of the UE, so that the PCRF notifies the PDN GW of reserving the service information of the UE.
After knowing that the UE accesses the network in the multiple access mode, the network device in the ninth embodiment of the present invention sends the indication information indicating not to delete the service information of the UE on the PDN GW when it needs to release the bearer resource of the UE in the current network, so that the PDN GW retains the service information of the UE.
Example ten:
referring to fig. 9, an embodiment of the present invention provides a user equipment, including:
a receiving unit 901, configured to receive a resource deletion message sent by a network side for a current network;
a sending unit 902, configured to initiate a resource establishment request in another network after receiving the resource deletion message.
Wherein the resource deletion message carries access types of other networks;
the sending unit 902 is configured to initiate a resource establishment request in the other network after receiving the resource deletion message.
After receiving the resource deletion message to the current network, the user equipment in the tenth embodiment of the invention initiates a resource establishment request in other networks, so that the PDN GW can reasonably determine whether to delete the service information of the UE.
Example eleven:
an eleventh embodiment of the present invention provides a network system, including: a PDN GW and a PCRF,
the PDN GW is configured to receive indication information, where the indication information indicates that resources of a user equipment UE in a current network need to be released due to a network side, receive a PCC rule issued by a PCRF when the UE accesses in a multi-access mode, reserve resources for the UE in another network to which the UE accesses according to the PCC rule, and switch a service related to the released resources to another network to which the UE accesses;
and the PCRF is used for generating a PCC rule and sending the PCC rule and the recommended access type of other networks used by the UE to the PDN GW.
When the PDN GW in the network system according to the eleventh embodiment of the present invention receives an indication that the UE needs to release resources in the current network due to a network side, if the UE accesses the network in the multi-access mode, the PDN GW switches a service in the current network to another network, so as to ensure continuity of the service.
Example twelve:
a twelfth embodiment of the present invention provides a network system, including: the BBERF and the PCRF are combined,
the BBERF is used for acquiring the access mode of the UE accessing the network; if the access mode is multi-access mode access, when the bearing resource of the UE in the current network needs to be released, sending indication information indicating that the service information of the UE on the PDN GW is not deleted to the PCRF;
and the PCRF is used for informing the PDN GW to reserve the service information of the UE after receiving the indication information indicating that the service information of the UE on the PDN GW is not deleted.
The PCRF is further configured to determine whether a message requesting a PCC rule sent by the PDN GW is received within a predetermined time period after receiving indication information indicating that the service information of the UE on the PDN GW is not deleted;
and the service information informing the PDN GW to reserve the UE is sent when a message of requesting the PCC rule sent by the PDN GW is received within a preset time period.
The BBERF in the network system provided in the twelfth embodiment of the present invention notifies the PDN GW, through the PCRF, that the service information of the UE is not to be deleted, so that the PDN GW retains the service information of the UE.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by hardware that is instructed to implement by a program, and the program may be stored in a computer-readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like.
The service information control method, the related device and the system provided by the embodiment of the present invention are described in detail above, and a specific example is applied in the text to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A method for switching services, comprising:
receiving indication information, wherein the indication information indicates that resources of User Equipment (UE) in a current network need to be released due to network side reasons;
when the UE accesses in a multi-access mode, switching the service related to the released resource to another network accessed by the UE according to the indication information, where switching the service related to the released resource to another network accessed by the UE includes:
a packet data network gateway PDN GW sends information indicating that the current network can not provide service for UE to a policy and charging rule function PCRF; receiving Policy and Charging Control (PCC) rules issued by a Policy and Charging Rules Function (PCRF) and recommending the access types of other networks used by the UE; according to the PCC rule, reserving resources in the other networks for the UE, and switching the service to the other networks;
or,
the PDN GW determines other networks to which the service needs to be switched, reserves resources for the UE in the other networks according to PCC rules generated by the PDN GW, and switches the service to the other networks;
or,
the PDN GW determines other networks to which the service needs to be switched, and requests a PCC rule to the PCRF; receiving a PCC rule sent by the PCRF; and reserving resources for the UE in the other networks according to the received PCC rules, and switching services into the other networks.
2. The method of claim 1, further comprising:
and the PDN GW sends indication information indicating that resources are reserved for the UE in the other networks to the UE.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
before switching the service related to the released resource to other networks accessed by the UE, the PDN GW judges whether a resource switching request sent by the UE is received within a preset time period, and if so, executes a step of switching the service related to the released resource to other networks accessed by the UE.
4. The method of claim 3, wherein before determining whether the resource switch request sent by the UE is received within a predetermined time period, the method further comprises:
and the PDN GW sends indication information representing that the service information of the UE is reserved by the network side to the UE and triggers the UE to initiate the resource switching request.
5. A gateway device, comprising:
a receiving unit, configured to receive indication information, where the indication information indicates that resources of a user equipment UE in a current network need to be released due to a network side;
the first judging unit is used for judging whether the UE is accessed in a multi-access mode;
a switching unit, configured to switch, when the UE accesses in a multiple access mode, a service related to the released resource to another network to which the UE accesses according to the indication information;
the switching unit includes:
a first sending unit, configured to send, to the PCRF, information indicating that the current network cannot provide a service for the UE;
a first receiving unit, configured to receive a PCC rule issued by a PCRF and an access type of another network recommended to be used by the UE;
a first processing unit, configured to reserve resources for the UE in the other network according to the PCC rule, and switch a service to the other network;
or,
the switching unit includes:
a determining unit, configured to determine another network to which the service needs to be switched;
a second processing unit, configured to generate a PCC rule, reserve resources for the UE in the other network according to the PCC rule, and switch the service to the other network;
or,
the switching unit includes:
a determining unit, configured to determine another network to which the service needs to be switched;
a second sending unit, configured to send a message requesting PCC rules to the PCRF;
a second receiving unit, configured to receive the PCC rule sent by the PCRF;
a third processing unit, configured to reserve resources for the UE in the other network according to the PCC rule, and switch the service to the other network.
6. The gateway device of claim 5, further comprising:
a third sending unit, configured to send, to the UE, indication information indicating that resources have been reserved for the UE in the other network.
7. The gateway device according to claim 5 or 6, further comprising: a second judging unit for judging whether the first signal is a signal,
the second judging unit is configured to judge whether a resource switching request sent by the UE is received within a predetermined time period;
and the switching unit is configured to switch the service related to the released resource to another network to which the UE accesses when the UE accesses in a multi-access mode and the determination result of the second determining unit is yes.
8. The gateway device of claim 7, further comprising:
a fourth sending unit, configured to send, to the UE, indication information indicating that the network side reserves service information of the UE, and trigger the UE to initiate the resource handover request.
9. A network system, comprising: a PDN GW and a PCRF,
the PDN GW is configured to receive indication information, where the indication information indicates that resources of a user equipment UE in a current network need to be released due to a network side, receive a PCC rule issued by a PCRF when the UE accesses in a multi-access mode, and switch, according to the PCC rule, a service related to the released resources to another network to which the UE accesses;
the PDN GW includes:
a receiving unit, configured to receive indication information, where the indication information indicates that resources of a user equipment UE in a current network need to be released due to a network side;
the first judging unit is used for judging whether the UE is accessed in a multi-access mode;
a switching unit, configured to switch, when the UE accesses in a multiple access mode, a service related to the released resource to another network to which the UE accesses according to the indication information;
the switching unit includes:
a first sending unit, configured to send, to the PCRF, information indicating that the current network cannot provide a service for the UE;
a first receiving unit, configured to receive a PCC rule issued by a PCRF and an access type of another network recommended to be used by the UE;
a first processing unit, configured to reserve resources for the UE in the other network according to the PCC rule, and switch a service to the other network;
or,
the switching unit includes:
a determining unit, configured to determine another network to which the service needs to be switched;
a second processing unit, configured to generate a PCC rule, reserve resources for the UE in the other network according to the PCC rule, and switch the service to the other network;
or,
the switching unit includes:
a determining unit, configured to determine another network to which the service needs to be switched;
a second sending unit, configured to send a message requesting PCC rules to the PCRF;
a second receiving unit, configured to receive the PCC rule sent by the PCRF;
a third processing unit, configured to reserve resources for the UE in the other network according to the PCC rule, and switch the service to the other network;
and the PCRF is used for generating PCC rules and sending the PCC rules to the PDN GW, and the PCRF is also used for sending the recommended access types of other networks used by the UE to the PDN GW.
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| CN2009101193710A CN101848511B (en) | 2009-03-24 | 2009-03-24 | Business switching method, business information control method, related apparatus and system |
| PCT/CN2009/075120 WO2010108367A1 (en) | 2009-03-24 | 2009-11-25 | Traffic switch method, traffic information control method, corresponding equipment and system |
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| CN103024876B (en) * | 2011-09-27 | 2016-02-03 | 华为技术有限公司 | Connection control method, gateway and system |
| CN103037408B (en) * | 2011-09-30 | 2015-12-16 | 华为终端有限公司 | The changing method of IP service flow, terminal and corresponding functional entity |
| CN104580781B (en) * | 2015-01-08 | 2017-06-27 | 华为技术有限公司 | Message treatment method, system, Proxy Call Session Control Function device and server |
| CN106027607B (en) * | 2016-05-04 | 2018-12-18 | 北京思特奇信息技术股份有限公司 | A kind of pair of fixed network services carry out the method and system for unconditionally accepting pseudo- completion |
| CN107371208B (en) * | 2016-05-13 | 2022-04-29 | 中兴通讯股份有限公司 | Switching method and device |
| CN108540428B (en) * | 2017-03-02 | 2021-10-01 | 华为技术有限公司 | Service processing method, device and system |
| CN115442859A (en) * | 2021-06-03 | 2022-12-06 | 中兴通讯股份有限公司 | Signaling storm suppression method, mobile terminal, electronic device and storage medium |
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