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WO2018001247A1 - 控制用户设备的方法、装置及系统和网关 - Google Patents

控制用户设备的方法、装置及系统和网关 Download PDF

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Publication number
WO2018001247A1
WO2018001247A1 PCT/CN2017/090368 CN2017090368W WO2018001247A1 WO 2018001247 A1 WO2018001247 A1 WO 2018001247A1 CN 2017090368 W CN2017090368 W CN 2017090368W WO 2018001247 A1 WO2018001247 A1 WO 2018001247A1
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WO
WIPO (PCT)
Prior art keywords
gateway
pgw
idle state
pdn connection
deactivate
Prior art date
Application number
PCT/CN2017/090368
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English (en)
French (fr)
Inventor
汪钱纯
詹徐周
Original Assignee
中兴通讯股份有限公司
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Filing date
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Publication of WO2018001247A1 publication Critical patent/WO2018001247A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements

Definitions

  • the present application relates to, but is not limited to, the field of communications, and more particularly to a method, apparatus, and system and gateway for controlling user equipment.
  • the 3rd Generation Partnership Project (3GPP) is a project architecture evolution (SAE) for next-generation mobile wireless networks.
  • SAE project architecture evolution
  • the architecture of the SAE is shown in Figure 1, which mainly includes the following network elements:
  • E-RAN Evolved RAN
  • the network element included in the E-RAN is an eNodeB (Evolved NodeB), and is configured to provide radio resources for access of the terminal;
  • HSS Home Subscriber Server: that is, the home subscriber server, which is set to permanently store user subscription data;
  • MME Mobility Management Entity
  • a control plane function entity which is configured as a server that temporarily stores user data, and is responsible for managing and storing UE (User Equipment) contexts (such as UE or user identity, mobility management). State, user security parameters, etc., assign a temporary identifier to the user, and when the UE is camped in the tracking area or the network, is responsible for authenticating the user, processing all non-access stratum messages between the MME and the UE, and triggering SAE paging;
  • UE User Equipment
  • SGSN (Serving GPRS Support Node), that is, GPRS supporting Gb or Iu access, is a server for temporarily storing user data, responsible for managing and storing GMM context and PDP context, and processing SGSN and UE All non-access stratum messages between;
  • SGW Serving Gateway
  • the service gateway which is a user plane entity, is responsible for user plane data routing processing, and terminates downlink data of the UE in idle state, management and storage.
  • the SAE bearer context of the UE such as IP bearer service parameters and network internal routing information.
  • the gateway is an anchor point of the internal user plane of the 3GPP system, and one user can only have one Serving GW at a time;
  • PGW Packet Data Network Gateway
  • PDN Packet Data Network
  • Mobility anchor the user can access multiple PDN GWs at the same time;
  • Policy and Charging Rule Functionality which is a policy and a charging rule function entity.
  • the function entity generates Qos (Quality of Service) for controlling user data transmission based on service information and user subscription information and operator configuration information.
  • Qos Quality of Service
  • the rules and charging rules, the functional entity can also control the establishment and release of bearers in the access network.
  • EPS Evolved Packet System gateways gradually produce some constraints.
  • the user data stream processing is concentrated on the PDN egress gateway, which causes the gateway device to have complicated functions and poor scalability.
  • the control plane of the gateway is highly coupled with the forwarding plane, which is not conducive to the smooth evolution of the core network.
  • the frequency of the forwarding surface expansion is higher than that of the control plane.
  • the tight coupling causes the control plane to forward and expand synchronously.
  • the short equipment update period leads to an increase in the composite cost.
  • Network layer data forwarding is difficult to identify users and service features. It can only be forwarded according to the QoS delivered by the upper layer, resulting in inefficient use of network resources. It is difficult to finely control the data flow based on user and service characteristics.
  • a large number of strategies require manual configuration, resulting in increased management complexity and high operating costs. Therefore, the control functions and forwarding functions in the packet domain gateway need to be further separated to meet the needs of network development and market applications.
  • FIG. 2 is a schematic structural diagram of a separation between a GW control plane and a user plane in a non-roaming scenario.
  • the architecture splits the S/PGW in the original EPS architecture into two functional network elements, GwC (Gateway Controller) and GwU (Gateway User).
  • GwC Gateway Controller
  • GwU Gateway User
  • GwC includes SGwC and PGwC, which respectively correspond to the control planes of SGW and PGW, and are responsible for functions such as load sharing, GwU selection, IP address and tunnel identification allocation, policy and charging control.
  • GwU includes SGwU and PGwU, which correspond to the user planes of SGW and PGW respectively, and is responsible for user plane related functions of S/PGW, including data stream identification and deep packet parsing, QoS processing and inheritance. Load binding, buffering of downstream paging data, etc.
  • the interface of the user plane and the control plane of the docking correspond to S/PGwC and S/PGwU respectively, and the other corresponding interface functions are compared with the original EPS architecture.
  • the above problems of the EPS gateway are solved, but new technical problems are also introduced. For example, after the user's location is moved, the bearer resources are wasted and the delay of the delivery of user packets is extended in some scenarios.
  • the MME performs the SGW selection based on the user location and the subscription information.
  • the MME determines whether the SGW reselection is required, and performs SGW selection and information update of the uplink and downlink data transmission paths.
  • the PGW acts as an anchor and does not change. If it is determined that the reselection of the SGW is required, the appropriate SGW is reselected according to the updated location information and the subscription information, and the newly selected SGW uplink user plane address and tunnel identifier are sent to the eNodeB to update the uplink data transmission path information. To ensure the correct transmission of upstream data.
  • the new eNodeB information such as the eNodeB downlink user plane address and the tunnel identifier, is sent to the SGW to update the downlink data transmission path information to ensure the correct transmission of the downlink data. If the reselection of the SGW is not required, the information about the current user plane address and the tunnel identifier of the current SGW is sent to the new eNodeB, and the new eNodeB downlink user plane address and the tunnel identifier are transmitted to the current SGW. Reconstruction of the row data channel. In the handover process, whether the MME is changed or not is related to the waste of the bearer resources and the delay of the delivery of the user packets discussed in the present application, and may be referred to the existing mechanism for processing.
  • the GW selection by the MME according to the existing mechanism is actually the selection of the GWC, and the GWC is responsible for selecting and managing the GWU in its corresponding GWU group.
  • the PGW does not change as the anchor point, that is, the PGwC and the PGwU do not change.
  • the bearer resources and the lengthening may be wasted. Delivery user message delay.
  • the GWC can select the SGwU and the PGwU according to the principle of proximity to save the bearer resources and improve the user experience.
  • the uplink data arrives at the eNodeB, it sends the SGwU to the SGwU, and the SGwU sends the SGwU to the PGwU.
  • the downlink data is sent to the eNodeB in the reverse direction.
  • an S1 switch occurs.
  • the MME determines that the SGwC does not need to be changed.
  • the GWC can select the SGwU according to the principle of proximity, so that the SGwU needs to be changed.
  • the uplink data arrives at the eNodeB, it will be sent to the new SGwU, and the new SGwU is sent to the previously accessed PGwU, but the physical distance between the new SGwU and the previously accessed PGwU may be The route between the two is too long, resulting in a waste of bearer resources and a delay in delivering user packets.
  • the SGwU changes after the user's location moves.
  • the bearer resources cannot be saved in some scenarios, and the service experience is not guaranteed.
  • the embodiment of the invention provides a method, a device, a system and a gateway for controlling a user equipment, so as to save the bearer resources of the EPS gateway.
  • a method for controlling a user equipment including: the gateway determines that the user equipment UE is in an idle state; and the gateway instructs the packet data network gateway PGW to deactivate the PDN connection of the UE.
  • the gateway instructing the PGW to deactivate the PDN connection of the UE includes: the gateway immediately instructs the PGW to deactivate the PDN connection of the UE after determining that the UE is in an idle state; or the gateway detects the preset time after determining that the UE is in an idle state. Whether the UE is in an idle state after the interval, and the UE instructs the PGW to deactivate the PDN connection of the UE if the UE is in the idle state after the preset time interval.
  • the determining, by the gateway, that the user equipment UE is in an idle state comprises: receiving, by the gateway, a notification message sent by the mobility management entity MME to notify the gateway UE to enter an idle state.
  • the gateway after determining that the UE is in an idle state, detecting whether the UE is in an idle state after the preset time interval is included, the gateway detecting, after determining that the UE is in an idle state, does not always receive until a preset time interval elapses.
  • the packet is further included.
  • the gateway receives the first reactivation indication sent by the PGW; the gateway sends a second reactivation indication to the UE to indicate that the PDN connection of the UE is reactivated.
  • the first reactivation indication and the second reactivation indication carry a reactivation cause value, wherein the reactivation reason value is used to indicate a reason for reactivation of the UE.
  • the sending, by the gateway, the second reactivation indication to the UE includes: the gateway transparently transmitting the reactivation cause value to the mobility management entity MME; and the MME converts the reactivation cause value into a non-access stratum cause value NAS cause, and A second reactivation indication carrying the NAS cause is sent to the UE.
  • the gateway comprises one of: a serving gateway SGW; a control plane function CPF.
  • the gateway instructing the PGW to deactivate the PDN connection of the UE includes: the gateway determining whether the data transmission route needs to be optimized; and in case the data transmission route needs to be optimized, the gateway instructing the PGW to deactivate the PDN connection of the UE.
  • the gateway instructing the PGW to deactivate the PDN connection of the UE comprises: the gateway instructing the PGW and the mobility management entity MME to respectively deactivate the PDN connection of the UE.
  • an apparatus for controlling a user equipment comprising: a determining module configured to determine that the user equipment UE is in an idle state; and an indication module configured to instruct the packet data network gateway PGW to deactivate the PDN of the UE connection.
  • a gateway is provided that is configured to determine that the user equipment UE is in an idle state and instructs the packet data network gateway PGW to deactivate the PDN connection of the UE.
  • a system for controlling a user equipment comprising: a gateway, configured to determine that the user equipment UE is in an idle state, and instructing a packet data network gateway PGW to deactivate a PDN connection of the UE; PGW, setting To activate the PDN connection of the UE according to the indication of the gateway.
  • a storage medium is also provided.
  • the storage medium is arranged to store program code for performing the steps of: the gateway determining that the user equipment UE is in an idle state; the gateway instructing the packet data network gateway PGW to deactivate the PDN connection of the UE.
  • the gateway since the gateway determines that the UE is in an idle state, the indication The PGW deactivates the PDN connection of the UE, so that after the UE initiates the attachment to the EPS network with the control plane and the user plane separated, the UE can be reactivated when the UE location changes, effectively avoiding the new SGwU and the previous access.
  • the PGwU wastes the bearer resources due to the long distance of the physical location, and delays the delivery of user packets, thereby improving the user experience of using the service.
  • FIG 1 is an architectural diagram of the EPC
  • FIG. 2 is a schematic structural diagram of a separation between a GW control plane and a user plane in a non-roaming scenario
  • FIG. 3 is a flow chart of a method of controlling a user equipment according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method of controlling a user equipment in a tracking area update process of an SGwU change according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for controlling a user equipment in a normal handover process of SGwU change according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a method for controlling a user equipment in a path switching process of SGwU change according to an embodiment of the present invention
  • FIG. 7 is a structural block diagram of an apparatus for controlling a user equipment according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a system for controlling a user equipment according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a method for controlling a user equipment according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps. Step:
  • Step S302 the gateway determines that the user equipment UE is in an idle state
  • Step S304 the gateway instructs the packet data network gateway PGW to deactivate the PDN connection of the UE.
  • the PGW is instructed to deactivate the PDN connection of the UE, so that when the UE initiates the attachment to the EPS network with the control plane and the user plane separated, when the UE location changes.
  • the UE can be reactivated, which effectively avoids the waste of the bearer resources caused by the long distance between the new SGwU and the previously accessed PGwU, and the delay of the delivery of the user packets, thereby improving the experience of the user using the service.
  • the gateway instructing the PGW to deactivate the PDN connection of the UE includes: the gateway immediately instructs the PGW to deactivate the PDN connection of the UE after determining that the UE is in an idle state; or the gateway detects the preset time after determining that the UE is in an idle state. Whether the UE is in an idle state after the interval, and the UE instructs the PGW to deactivate the PDN connection of the UE if the UE is in the idle state after the preset time interval.
  • the SGW learns that the UE is in an idle state at 10:00, it detects whether the UE is in an idle state after 5 minutes, that is, 10:05. Among them, between 10:00 and 10:05, the UE may always be in an idle state, and a connected state may also occur.
  • the determining, by the gateway, that the user equipment UE is in an idle state comprises: receiving, by the gateway, a notification message sent by the mobility management entity MME to notify the gateway UE to enter an idle state.
  • the gateway may immediately instruct the PGW to deactivate the UE after receiving the notification message sent by the MME; or may detect whether the UE is in an idle state after receiving the preset time interval after receiving the notification message sent by the MME. If in the idle state, the PGW is instructed to deactivate the PDN connection of the UE.
  • the gateway after determining that the UE is in an idle state, detecting whether the UE is in an idle state after the preset time interval is included, the gateway detecting, after determining that the UE is in an idle state, does not always receive until a preset time interval elapses.
  • the SGW learns that the UE is in the idle state at 10:00, and the SGW does not receive the SGW that is sent by the MME to notify the SGW that the user equipment UE enters the connected state.
  • the notification message confirms that the SGW is in an idle state after learning that the UE is in the idle state for 5 minutes.
  • the method further includes: the gateway receiving the first reactivation indication sent by the PGW; the gateway sending a second reactivation indication to the UE to indicate that the PDN connection of the UE is reactivated .
  • the first reactivation indication and the second reactivation indication carry a reactivation cause value, wherein the reactivation reason value is used to indicate a reason for reactivation of the UE.
  • the sending, by the gateway, the second reactivation indication to the UE includes: the gateway transparently transmitting the reactivation cause value to the mobility management entity MME; and the MME converts the reactivation cause value into a non-access stratum cause value NAS cause, and A second reactivation indication carrying the NAS cause is sent to the UE.
  • the reactivation cause value refers to the reason why the UE is reactivated, and the UE can determine whether to reactivate based on the cause value. For example, if the cause of the reactivation cause value indicates that the UE's service requirements are met, the UE is reactivated.
  • the gateway in the foregoing embodiment includes one of the following: a serving gateway SGW; and a control plane function CPF.
  • the SGW is a gateway for 2G/3G/4G network access
  • the CPF is a gateway for 5G network access.
  • the gateway instructing the PGW to deactivate the PDN connection of the UE includes: the gateway determining whether the data transmission route needs to be optimized; and in case the data transmission route needs to be optimized, the gateway instructing the PGW to deactivate the PDN connection of the UE.
  • the data transmission route needs to be optimized, and the route can be determined according to the SGW/UPF (User Plane Function) and the PGW/UPF address.
  • SGW/UPF User Plane Function
  • the gateway instructing the PGW to deactivate the PDN connection of the UE comprises: the gateway instructing the PGW and the mobility management entity MME to respectively deactivate the PDN connection of the UE.
  • the MME notifies the SGW that the user equipment enters the idle state, and the gateway immediately notifies the PGW to activate the PDN connection of the user equipment, or the gateway.
  • the PGW is notified to activate the PDN connection of the user equipment, and then the PGW initiates the deactivation of the user process, where the user may also carry the indication to the user to reactivate the cause value, and then the UE may re- Initiate the activation process.
  • Embodiments of a method of controlling a user equipment in accordance with an embodiment of the present invention are provided below.
  • FIG. 4 is a flow chart of a method of controlling a user equipment during a tracking area update process of an SGwU change according to an embodiment of the present invention.
  • the method includes:
  • step S401 the user equipment (that is, the terminal) initiates a tracking area update message to the network.
  • Step S402 performing other process processing of tracking area update, wherein the SGwC selects a new SGwU to establish a resource.
  • step S403 the base station (that is, the radio access network element) sends an S1 release request message to the mobility management entity.
  • Step S404 the mobility management entity MME sends a release access bearer request message to the serving gateway control plane SGwC.
  • the foregoing notification message for informing the UE to enter an idle state may be the release access bearer request message.
  • Step S405 the serving gateway control plane SGwC sends a release access bearer response message to the mobility management entity.
  • Step S406 the mobility management entity sends an S1 release command message to the base station.
  • Step S407 the serving gateway immediately notifies the PGW to deactivate the user equipment; or, after a certain time interval, the user equipment is still in an idle state, and the service gateway notifies the PGW to deactivate the user equipment. PDN connection.
  • Step S408 the serving gateway sends a notification message to the packet data network gateway to deactivate the PDN connection of the user equipment.
  • Step S409 the packet data network gateway initiates a deactivation of the user process, where a message carrying a cause value indicating the user reactivation may be sent to the SGW.
  • Step S410 the user equipment initiates a reactivation process.
  • the SGW instructs the PGW to deactivate the PDN connection of the UE, in the case that the SGW learns that the UE is in the idle state, so that the UE is in the UE location after initiating the attachment to the EPS network with the control plane and the user plane separated.
  • the UE can be reactivated, which effectively avoids the waste of the bearer resources caused by the long distance between the new SGwU and the previously accessed PGwU, and the delay of the delivery of the user packets, thereby improving the experience of the user using the service.
  • FIG. 5 is a flowchart of a method of controlling a user equipment in a normal handover process of SGwU change according to an embodiment of the present invention. The method includes:
  • Step S501 the radio access network element sends a handover request message.
  • the handover request message may be an ordinary handover of the user equipment.
  • the radio access network element performs a handover preparation process, and the source side radio access network element sends a handover request message.
  • Step S502 performing other process processing of the handover, wherein the SGwC selects a new SGwU to establish a resource.
  • the above steps S501-502 are performed by the radio access network element and the network side.
  • Step S503 the base station sends an S1 release request message to the mobility management entity MME.
  • Step S504 the mobility management entity sends a release access bearer request message to the serving gateway control plane SGwC.
  • the foregoing notification message for informing the UE to enter an idle state may be the release access bearer request message.
  • Step S505 the serving gateway control plane SGwC sends a release access bearer to the mobility management entity. Response message.
  • Step S506 the mobility management entity sends an S1 release command message to the base station.
  • step S507 the serving gateway immediately notifies the PGW to deactivate the user equipment; or, after a certain time interval, the user equipment is still in an idle state, and the serving gateway notifies the PGW to deactivate the user equipment.
  • Step S508 the serving gateway sends a notification message to the packet data network gateway to deactivate the user equipment.
  • Step S509 The packet data network gateway initiates a process of deactivating a PDN connection of the user equipment, where the message carrying the reason value indicating the reactivation of the user equipment is sent to the SGW.
  • step S510 the user equipment initiates a reactivation process.
  • the source side radio access network element notifies the network side to initiate the handover, and the network side notifies the destination side radio access network element to switch (ie, the handover preparation process), the destination side handover resource establishment is completed, and the source side switches resources.
  • Release that is, the handover execution process
  • the SGW instructs the PGW to deactivate the PDN connection of the UE, so that the UE initiates the attachment access to the control plane and the user plane.
  • the UE can be reactivated when the location of the UE changes, which effectively avoids the waste of the bearer resources caused by the new SGwU and the previously accessed PGwU due to the long physical distance, and the delay of the delivery of user packets. Long, improve the user experience of using the business.
  • FIG. 6 is a flow chart of a method of controlling a user equipment in a path switching process of SGwU change according to an embodiment of the present invention.
  • the method includes:
  • Step S601 the radio access network element sends a path switch request message.
  • the radio access network element After completing the handover preparation process and the handover execution process, the radio access network element sends a path switch request message.
  • Step S602 performing other process processing of path switching, wherein the SGwC selects a new SGwU to establish resources.
  • Step S603 the base station sends an S1 release request message to the mobility management entity MME.
  • Step S604 the mobility management entity sends a release access bearer request message to the serving gateway control plane SGwC.
  • the foregoing notification message for informing the UE to enter an idle state may be the release access bearer request message.
  • Step S605 the serving gateway control plane SGwC sends a release access bearer response message to the mobility management entity.
  • Step S606 the mobility management entity sends an S1 release command message to the base station.
  • Step S607 the serving gateway immediately notifies the PGW to deactivate the user equipment; or, after the user equipment is still in an idle state after a certain time interval, the serving gateway notifies the PGW to deactivate the user equipment.
  • Step S608 the serving gateway sends a notification message to the packet data network gateway to deactivate the user equipment.
  • Step S609 the packet data network gateway initiates a process of deactivating a PDN connection of the user equipment, where a message carrying a reason value indicating the reactivation of the user equipment is sent to the SGW.
  • Step S610 the user equipment re-initiates the activation process.
  • the destination side radio access network element notifies the network side to initiate the handover, and the radio access network element sends a path switch request message after completing the handover preparation process and the handover execution process.
  • the SGW learns that the UE is in the idle state
  • the SGW instructs the PGW to deactivate the UE, so that when the UE initiates the attachment to the EPS network with the control plane and the user plane separated, when the UE location changes,
  • the UE can be reactivated, which effectively avoids the waste of the bearer resources caused by the long distance between the new SGwU and the previously accessed PGwU, and the delay of the delivery of the user packets, thereby improving the experience of the user using the service.
  • the user equipment location moves, the SGwU changes, and when the subsequent user enters the idle state, the SGW immediately notifies the PGW to activate the user, or the user is still idle after a certain time interval.
  • the SGW notifies the PGW to activate the user, and the PGW initiates the process of deactivating the user equipment, and the user equipment re-accesses, which avoids the resource saving in the scenario and the good service experience of the user.
  • the SGwU and the PGwU that are in a single or short route are used to forward user data, which is beneficial to reducing the waste of the bearer resources and improving the user experience of using the service.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the embodiment of the present invention may be embodied in the form of a software product stored in a storage medium (such as a ROM/RAM, a magnetic disk, an optical disk), and includes a plurality of instructions for making a A terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) performs the methods described in various embodiments of the present invention.
  • a device for controlling the user equipment is provided, and the device is used to implement the foregoing embodiments and implementation manners, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the devices described in the following embodiments may be implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 7 is a structural block diagram of an apparatus for controlling a user equipment according to an embodiment of the present invention. As shown in FIG. 7, the apparatus includes:
  • the determining module 72 is configured to determine that the user equipment UE is in an idle state
  • the indication module 74 is configured to instruct the packet data network gateway PGW to deactivate the PDN connection of the UE.
  • the foregoing device for controlling the user equipment may be a serving gateway SGW or a control plane function CPF.
  • the indication module 74 instructs the packet data network gateway PGW to deactivate the PDN connection of the UE, so that the UE initiates the attaching access to the control plane and the user plane is separated.
  • the UE can be reactivated when the location of the UE changes, which effectively avoids the waste of the bearer resources caused by the long distance between the new SGwU and the previously accessed PGwU, and the delay of the delivery of the user packet. To improve the user experience of using the business.
  • a gateway is further provided, which is configured to determine a user setting.
  • the standby UE is in an idle state and instructs the packet data network gateway PGW to deactivate the PDN connection of the UE.
  • the gateway may be used to perform the method for controlling the user equipment in the foregoing embodiment.
  • the gateway may be a serving gateway SGW or a control plane function CPF.
  • the foregoing device determines that the user equipment UE is in an idle state, and instructs the packet data network gateway PGW to deactivate the PDN connection of the UE, so that after the UE initiates the attachment to the EPS network with the control plane and the user plane separated,
  • the UE can be reactivated, which effectively avoids the waste of the bearer resources caused by the long distance between the new SGwU and the previously accessed PGwU, and the delay of the delivery of the user packets.
  • a system for controlling a user equipment is also provided. As shown in FIG. 8, the system includes:
  • the gateway 82 is configured to determine that the user equipment UE is in an idle state, and instruct the packet data network gateway PGW to deactivate the PDN connection of the UE;
  • the PGW 84 is arranged to deactivate the PDN connection of the UE as directed by the gateway 82.
  • the packet data network gateway PGW is instructed to deactivate the PDN connection of the UE, so that after the UE initiates the attachment to the EPS network with the control plane and the user plane separated,
  • the UE can be reactivated, which effectively avoids the waste of the bearer resources caused by the long distance between the new SGwU and the previously accessed PGwU, and the delay of the delivery of the user packets.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • Embodiments of the present invention also provide a storage medium.
  • the above storage medium may be configured to store program code for performing the following steps:
  • the gateway determines that the user equipment UE is in an idle state.
  • the gateway instructs the packet data network gateway PGW to deactivate the PDN connection of the UE.
  • the foregoing storage medium may include, but not limited to, a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • mobile hard disk a magnetic disk
  • magnetic disk a magnetic disk
  • optical disk a variety of media that can store program code.
  • the modules or steps of the above embodiments of the present invention may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices, which may be implemented by computing devices.
  • the executed program code is implemented such that they can be stored in a storage device by a computing device, and in some cases, the steps shown or described can be performed in a different order than here, or they can be
  • Each of the integrated circuit modules is fabricated separately, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module.
  • embodiments of the invention are not limited to any specific combination of hardware and software.
  • the PGW when the gateway determines that the UE is in the idle state, the PGW is instructed to deactivate the PDN connection of the UE, so that the UE occurs at the UE location after initiating the attachment to the EPS network separated from the control plane and the user plane.
  • the UE can be reactivated, which effectively avoids the waste of the bearer resources caused by the long distance between the new SGwU and the previously accessed PGwU, and the delay of the delivery of the user packets, thereby improving the user experience of using the service.

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Abstract

本文公布一种控制用户设备的方法、装置及系统和网关。该方法包括：网关确定用户设备UE处于空闲态；网关指示分组数据网网关PGW去激活UE的PDN连接。

Description

控制用户设备的方法、装置及系统和网关 技术领域
本申请涉及但不限于通信领域，尤指一种控制用户设备的方法、装置及系统和网关。
背景技术
第三代合作伙伴计划(3rd Generation Partnership Project，简称为3GPP)对下一代移动无线网络的项目系统架构演进(System Architecture Evolution，简称为SAE)。SAE的架构如图1所示，其中主要包含了如下网元：
E-RAN(Evolved RAN)：也即演进的无线接入网，可以提供更高的上下行速率、更低的传输延迟和更加可靠的无线传输。E-RAN中包含的网元是eNodeB(Evolved NodeB)，设置为为终端的接入提供无线资源；
HSS(Home Subscriber Server)：也即归属用户服务器，设置为永久存储用户签约数据；
MME(Mobility Management Entity，移动管理实体)：也即控制面功能实体，设置为临时存储用户数据的服务器，负责管理和存储UE(User Equipment，用户设备)上下文(比如UE或者用户标识、移动性管理状态、用户安全参数等)，为用户分配临时标识，当UE驻扎在该跟踪区域或者该网络时负责对该用户进行鉴权，处理MME和UE之间的所有非接入层消息，以及触发在SAE的寻呼；
SGSN(Serving GPRS Support Node，服务GPRS支持节点)，也即支持Gb或Iu接入的GPRS，是用于临时存储用户数据的服务器，负责管理和存储GMM上下文和PDP上下文，以及处理SGSN和UE之间的所有非接入层消息；
SGW(Serving Gateway)：也即服务网关，该网关是一个用户面实体，负责用户面数据路由处理，终结处于空闲状态的UE的下行数据，管理和存 储UE的SAE承载(bearer)上下文，比如IP承载业务参数和网络内部路由信息等。该网关是3GPP系统内部用户面的锚点，一个用户在一个时刻只能有一个Serving GW；
PGW(Packet Data Network Gateway)：也即分组数据网网关，是负责UE接入PDN(Packet Data Network，分组数据网络)的网关，设置为分配用户IP地址，同时也是3GPP和非3GPP接入系统的移动性锚点，用户在同一时刻能够接入多个PDN GW；
PCRF(Policy and Charging Rule Functionality)：也即策略和合计费规则功能实体，该功能实体主要根据业务信息和用户签约信息以及运营商的配置信息产生控制用户数据传递的Qos(Quality of Service，服务质量)规则以及计费规则，该功能实体也可以控制接入网中承载的建立和释放。
随着需求增长，EPS(Evolved Packet System，演进分组系统)网关逐步产生了一些约束。用户数据流处理集中在PDN出口网关，造成网关设备功能繁杂，可扩展性差。网关的控制面与转发面高度耦合，不利于核心网平滑演进。转发面扩容需求频度高于控制面，紧耦合导致控制面转发面同步扩容，设备更新周期短导致复合成本增加。网络层数据转发难以识别用户、业务特征，仅能根据上层传递的QoS转发，导致网络资源利用低效，难以依据用户和业务特性对数据流进行精细控制。此外，大量策略需要手工配置，导致管理复杂度增加，运营成本居高不下。因此，需要将分组域网关中的控制功能与转发功能进一步分离，以适应网络发展和市场应用的需求。
图2是非漫游场景下GW控制面和用户面分离的架构示意图。该架构将原先的EPS架构中的S/PGW拆分成了GwC(Gateway Controller)和GwU(Gateway User)两类功能网元。
其中，GwC包括SGwC和PGwC，分别对应SGW和PGW的控制面，负责负荷分担、GwU的选择、IP地址和隧道标识的分配、策略和计费控制等功能。
GwU包括SGwU和PGwU，分别对应SGW和PGW的用户面，负责S/PGW的用户面相关功能，包括数据流识别和深度包解析、QoS处理和承 载绑定，下行寻呼数据的缓存等功能。
对接的用户面和控制面接口分别对应到S/PGwC和S/PGwU上，其余相应接口功能对照原EPS架构。
GW控制面和用户面分离之后，解决了EPS网关存在的上述诸多问题，但同时也引入了新的技术问题。例如，用户位置发生移动后，在某些场景下导致承载资源浪费及投递用户报文时延拉长。
在现在机制中，MME根据用户位置和签约信息等进行SGW的选择。当用户位置发生移动引发切换和跟踪区更新流程时，MME判断是否需要进行SGW的重选，并进行SGW选择和上下行数据传送路径的信息更新。PGW作为锚点，不改变。若判断需要进行SGW的重选，则根据更新后的位置信息和签约信息重新选择合适的SGW，并将新选择的SGW上行用户面地址和隧道标识等信息发送给eNodeB，更新上行数据传送路径信息，确保上行数据的正确传送。并将新的eNodeB信息，例如eNodeB下行用户面地址和隧道标识发送给SGW，更新下行数据传送路径信息，保证下行数据的正确传送。若不需要进行SGW的重选，则将当前的SGW的上行用户面地址和隧道标识等信息发送给新的eNodeB，并将新的eNodeB下行用户面地址和隧道标识传送给当前的SGW，进行上下行数据通道的重建。切换流程中，MME是否变更和本申请讨论的承载资源浪费及投递用户报文时延拉长问题无关，可参照已有机制处理，此处不做展开描述。
当SGW控制面和用户面功能分离后，MME根据已有机制进行的GW选择实际是GWC的选择，由GWC负责在其对应的GWU组中进行GWU的选择和管理。则根据如上所述机制，用户位置发生移动后，PGW作为锚点不改变，即PGwC和PGwU都不改变，在SGwC不需要切换但SGwU会重选的场景下则可能导致浪费承载资源及拉长投递用户报文时延。
例如，用户发起附着接入到控制面和用户面分离的EPS网络后，GWC可以根据就近原则选择SGwU和PGwU以便节约承载资源和提高用户体验，上行数据到达eNodeB后向SGwU发送，SGwU向PGwU发送，下行数据则是反方向的发送给eNodeB。当用户位置发生移动后，发生S1切换。MME收到原eNodeB的切换请求消息后，MME判断SGwC不需要变更， GWC可以根据就近原则选择SGwU，这样SGwU需要改变，上行数据到达eNodeB后会向新的SGwU发送，新的SGwU向之前接入的PGwU发送，但是新的SGwU和之前接入的PGwU物理位置距离可能较远，其之间的路由拉长，导致承载资源浪费及投递用户报文时延拉长。
因此，GW控制面和用户面分离之后，在用户位置发生移动后SGwU发生改变，导致在一些场景下不能节约承载资源，从而无法保证业务的体验良好性。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种控制用户设备的方法、装置及系统和网关，以节约EPS网关的承载资源。
根据本发明的一个实施例，提供了一种控制用户设备的方法，包括：网关确定用户设备UE处于空闲态；网关指示分组数据网网关PGW去激活UE的PDN连接。
在一实施方式中，网关指示PGW去激活UE的PDN连接包括：网关在确定UE处于空闲态之后，立即指示PGW去激活UE的PDN连接；或者网关在确定UE处于空闲态之后，检测预设时间间隔后UE是否处于空闲态，在预设时间间隔后UE处于空闲态的情况下，网关指示PGW去激活UE的PDN连接。
在一实施方式中，网关确定用户设备UE处于空闲态包括：网关接收移动管理实体MME发送的用于通知网关UE进入空闲态的通知消息。
在一实施方式中，网关在确定UE处于空闲态之后，检测预设时间间隔后UE是否处于空闲态包括：网关检测在确定UE处于空闲态之后，直到经过预设时间间隔，是否始终未接收到移动管理实体MME发送的用于通知网关UE进入连接态的通知消息。
在一实施方式中，在网关指示PGW去激活UE的PDN连接之后，还包 括：网关接收PGW发送的第一重新激活指示；网关向UE发送第二重新激活指示，以指示UE的PDN连接重新激活。
在一实施方式中，第一重新激活指示和第二重新激活指示中携带有重新激活原因值，其中，重新激活原因值用于指示使UE重新激活的原因。
在一实施方式中，网关向UE发送第二重新激活指示包括：网关将重新激活原因值透传给移动管理实体MME；MME将重新激活原因值转换为非接入层原因值NAS cause，并将携带有NAS cause的第二重新激活指示发送给UE。
在一实施方式中，网关包括以下之一：服务网关SGW；控制面功能CPF。
在一实施方式中，网关指示PGW去激活UE的PDN连接包括：网关判断数据传输路由是否需要优化；在数据传输路由需要优化的情况下，网关指示PGW去激活UE的PDN连接。
在一实施方式中，网关指示PGW去激活UE的PDN连接包括：网关分别指示PGW和移动管理实体MME去激活UE的PDN连接。
根据本发明的另一个实施例，提供了一种控制用户设备的装置，包括：确定模块，设置为确定用户设备UE处于空闲态；指示模块，设置为指示分组数据网网关PGW去激活UE的PDN连接。
根据本发明的另一个实施例，提供了一种网关，设置为确定用户设备UE处于空闲态，并指示分组数据网网关PGW去激活UE的PDN连接。
根据本发明的另一个实施例，提供了一种控制用户设备的系统，包括：网关，设置为确定用户设备UE处于空闲态，并指示分组数据网网关PGW去激活UE的PDN连接；PGW，设置为按照网关的指示去激活UE的PDN连接。
根据本发明的又一个实施例，还提供了一种存储介质。该存储介质设置为存储用于执行以下步骤的程序代码：网关确定用户设备UE处于空闲态；网关指示分组数据网网关PGW去激活UE的PDN连接。
通过本发明实施例，由于在网关确定UE处于空闲态的情况下，指示 PGW去激活UE的PDN连接，使得UE在发起附着接入到控制面和用户面分离的EPS网络后，在UE位置发生变化时，UE可以重新激活，有效避免了新的SGwU和之前接入的PGwU由于物理位置距离较远而导致的承载资源浪费、投递用户报文时延拉长，提高用户使用业务的体验。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1是EPC的架构图；
图2是非漫游场景下GW控制面和用户面分离的架构示意图；
图3是根据本发明实施例的控制用户设备的方法的流程图；
图4是根据本发明实施例的SGwU改变的跟踪区更新过程中控制用户设备的方法的流程图；
图5是根据本发明实施例的SGwU改变的普通切换过程中控制用户设备的方法的流程图；
图6是根据本发明实施例的SGwU改变的路径切换过程中控制用户设备的方法的流程图；
图7是根据本发明实施例的控制用户设备的装置的结构框图；
图8是根据本发明实施例的控制用户设备的系统的示意图。
详述
下文中将参考附图并结合实施例来详细说明本申请。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
在本实施例中提供了一种控制用户设备的方法，图3是根据本发明实施例的控制用户设备的方法的流程图，如图3所示，该流程包括如下步 骤：
步骤S302，网关确定用户设备UE处于空闲态；
步骤S304，网关指示分组数据网网关PGW去激活UE的PDN连接。
通过上述步骤，由于在网关确定UE处于空闲态的情况下，指示PGW去激活UE的PDN连接，使得UE在发起附着接入到控制面和用户面分离的EPS网络后，在UE位置发生变化时，UE可以重新激活，有效避免了新的SGwU和之前接入的PGwU由于物理位置距离较远而导致的承载资源浪费、投递用户报文时延拉长，提高用户使用业务的体验。
在一实施方式中，网关指示PGW去激活UE的PDN连接包括：网关在确定UE处于空闲态之后，立即指示PGW去激活UE的PDN连接；或者网关在确定UE处于空闲态之后，检测预设时间间隔后UE是否处于空闲态，在预设时间间隔后UE处于空闲态的情况下，网关指示PGW去激活UE的PDN连接。
例如，SGW在10:00获知UE处于空闲态，则检测5分钟后，也即10:05时，UE是否处于空闲态。其中，在10:00至10:05之间，UE可能始终是空闲态，也可能出现了连接态。
在一实施方式中，网关确定用户设备UE处于空闲态包括：网关接收移动管理实体MME发送的用于通知网关UE进入空闲态的通知消息。
在该实施例中，网关可以在接收到MME发送的通知消息之后，立即指示PGW去激活UE；或者，也可以检测接收到MME发送的通知消息之后的预设时间间隔后，UE是否处于空闲态，如果处于空闲态，则指示PGW去激活UE的PDN连接。
在一实施方式中，网关在确定UE处于空闲态之后，检测预设时间间隔后UE是否处于空闲态包括：网关检测在确定UE处于空闲态之后，直到经过预设时间间隔，是否始终未接收到移动管理实体MME发送的用于通知网关UE进入连接态的通知消息。
例如，SGW在10:00获知UE处于空闲态，在10:00到10:05之间，SGW始终未接收到MME发送的用于通知SGW用户设备UE进入连接态的 通知消息，则确认SGW在获知UE处于空闲态的5分钟后，UE处于空闲态。
在一实施方式中，在网关指示PGW去激活UE的PDN连接之后，还包括：网关接收PGW发送的第一重新激活指示；网关向UE发送第二重新激活指示，以指示UE的PDN连接重新激活。
在一实施方式中，第一重新激活指示和第二重新激活指示中携带有重新激活原因值，其中，重新激活原因值用于指示使UE重新激活的原因。
在一实施方式中，网关向UE发送第二重新激活指示包括：网关将重新激活原因值透传给移动管理实体MME；MME将重新激活原因值转换为非接入层原因值NAS cause，并将携带有NAS cause的第二重新激活指示发送给UE。
在该实施例中，重新激活原因值是指UE重新激活的原因，UE可以基于该原因值确定是否重新激活。例如，如果该重新激活原因值指示的原因符合UE的业务需求，则UE重新激活。
在一实施方式中，上述实施例中的网关包括以下之一：服务网关SGW；控制面功能CPF。
在该实施例中，SGW为用于2G/3G/4G网络接入的网关，CPF为用于5G网络接入的网关。
在一实施方式中，网关指示PGW去激活UE的PDN连接包括：网关判断数据传输路由是否需要优化；在数据传输路由需要优化的情况下，网关指示PGW去激活UE的PDN连接。
例如，根据APN判断出数据传输路由需要优化，可再根据SGW/UPF(User Plane Function，用户面功能)和PGW/UPF的地址判断路由是否需要优化。
在一实施方式中，网关指示PGW去激活UE的PDN连接包括：网关分别指示PGW和移动管理实体MME去激活UE的PDN连接。
需要说明的是，本发明上述实施例中的方法适用于GW控制面和用户面分离的场景。但是，本发明实施例不仅限于此。
在上述实施例中，当用户设备切换或跟踪区更新，发生SGwU改变、后续无线连接释放的情况下，MME通知SGW用户设备进入空闲态，网关立即通知PGW去激活用户设备的PDN连接，或者网关在一定的时间间隔后获知用户还是处于空闲态，则通知PGW去激活用户设备的PDN连接，进而PGW发起去激活用户流程，其中，还可携带指示用户重新激活原因值给网关，进而UE可重新发起激活流程。通过本发明实施例，当用户设备位置发生移动，发生SGwU改变时，避免了在部分场景下不能节约承载资源、无法保证用户业务体验良好性，进而便于选择合一或路由较短的SGwU和PGwU转发用户数据，从而有利于减少承载资源的浪费，有利于提高用户使用业务的体验。
下面提供了根据本发明实施例的控制用户设备的方法的实施方式。
实施例一
图4是根据本发明实施例的SGwU改变的跟踪区更新过程中控制用户设备的方法的流程图。该方法包括：
步骤S401，用户设备(也即，终端)发起跟踪区更新消息至网络。
步骤S402，进行跟踪区更新的其他流程处理，其中，SGwC选择新的SGwU建立资源。
步骤S403，基站(也即，无线接入网元)向移动管理实体发送S1释放请求消息。
步骤S404，移动管理实体MME向服务网关控制面SGwC发送释放接入承载请求消息。
上述的用于通知UE进入空闲态的通知消息可以为该释放接入承载请求消息。
步骤S405，服务网关控制面SGwC向移动管理实体发送释放接入承载响应消息。
步骤S406，移动管理实体向基站发送S1释放命令消息。
步骤S407，服务网关立即通知PGW去激活用户设备；或者，在一定的时间间隔后用户设备还是处于空闲态，服务网关通知PGW去激活用户设备 的PDN连接。
步骤S408，服务网关向分组数据网网关发送去激活用户设备的PDN连接的通知消息。
步骤S409，分组数据网网关发起去激活用户流程，其中，可将携带指示用户重新激活原因值的消息发送给SGW。
步骤S410，用户设备发起重新激活流程。
在该实施例中，通过在SGW获知UE处于空闲态的情况下，SGW指示PGW去激活UE的PDN连接，使得UE在发起附着接入到控制面和用户面分离的EPS网络后，在UE位置发生变化时，UE可以重新激活，有效避免了新的SGwU和之前接入的PGwU由于物理位置距离较远而导致的承载资源浪费、投递用户报文时延拉长，提高用户使用业务的体验。
实施例二
图5是根据本发明实施例的SGwU改变的普通切换过程中控制用户设备的方法的流程图。该方法包括：
步骤S501，无线接入网元发送切换请求消息。
其中，该切换请求消息可以是用户设备的普通切换。
在该步骤中，无线接入网元执行切换准备过程，源侧无线接入网元发送切换请求消息。
步骤S502，进行切换的其他流程处理，其中，SGwC选择新的SGwU建立资源。
上述步骤S501-502，由无线接入网元和网络侧完成。
步骤S503，基站向移动管理实体MME发送S1释放请求消息。
步骤S504，移动管理实体向服务网关控制面SGwC发送释放接入承载请求消息。
上述的用于通知UE进入空闲态的通知消息可以为该释放接入承载请求消息。
步骤S505，服务网关控制面SGwC向移动管理实体发送释放接入承载 响应消息。
步骤S506，移动管理实体向基站发送S1释放命令消息。
步骤S507，服务网关立即通知PGW去激活用户设备；或者，在一定的时间间隔后用户设备还是处于空闲态，服务网关通知PGW去激活用户设备。
步骤S508，服务网关向分组数据网网关发送去激活用户设备的通知消息。
步骤S509，分组数据网网关发起去激活用户设备的PDN连接的流程，其中，将携带有指示用户设备重新激活原因值的消息发送给SGW。
步骤S510，用户设备发起重新激活流程。
在该实施例中，源侧无线接入网元通知网络侧发起切换，网络侧通知目的侧无线接入网元切换(也即，切换准备过程)，目的侧切换资源建立完成，源侧切换资源释放(也即，切换执行过程)，在上述过程中，通过在SGW获知UE处于空闲态的情况下，SGW指示PGW去激活UE的PDN连接，使得UE在发起附着接入到控制面和用户面分离的EPS网络后，在UE位置发生变化时，UE可以重新激活，有效避免了新的SGwU和之前接入的PGwU由于物理位置距离较远而导致的承载资源浪费、投递用户报文时延拉长，提高用户使用业务的体验。
实施例三
图6是根据本发明实施例的SGwU改变的路径切换过程中控制用户设备的方法的流程图。该方法包括：
步骤S601，无线接入网元发送路径切换请求消息。
在该步骤中，无线接入网元完成切换准备过程和切换执行过程后，发送路径切换请求消息。
步骤S602，进行路径切换的其他流程处理，其中，SGwC选择新的SGwU建立资源。
上述步骤S601-602由无线接入网元完成之后，通知网络侧切换承载路径。
步骤S603，基站向移动管理实体MME发送S1释放请求消息。
步骤S604，移动管理实体向服务网关控制面SGwC发送释放接入承载请求消息。
上述的用于通知UE进入空闲态的通知消息可以为该释放接入承载请求消息。
步骤S605，服务网关控制面SGwC向移动管理实体发送释放接入承载响应消息。
步骤S606，移动管理实体向基站发送S1释放命令消息。
步骤S607，服务网关立即通知PGW去激活用户设备；或者，在一定的时间间隔后用户设备还是处于空闲态时，服务网关通知PGW去激活用户设备。
步骤S608，服务网关向分组数据网网关发送去激活用户设备的通知消息。
步骤S609，分组数据网网关发起去激活用户设备的PDN连接的流程，其中，将携带有指示用户设备重新激活原因值的消息发送给SGW。
步骤S610，用户设备重新发起激活流程。
在该实施例中，目的侧无线接入网元通知网络侧发起切换，无线接入网元完成切换准备过程和切换执行过程后，发送路径切换请求消息。在上述过程中，通过在SGW获知UE处于空闲态的情况下，SGW指示PGW去激活UE，使得UE在发起附着接入到控制面和用户面分离的EPS网络后，在UE位置发生变化时，UE可以重新激活，有效避免了新的SGwU和之前接入的PGwU由于物理位置距离较远而导致的承载资源浪费、投递用户报文时延拉长，提高用户使用业务的体验。
在上述实施例中，在不同的场景下，在用户设备位置发生移动，发生SGwU改变，后续用户进入空闲态时，SGW立即通知PGW去激活用户，或者，在一定的时间间隔后用户还处于空闲态时，SGW通知PGW去激活用户，进而PGW发起去激活该用户设备流程，用户设备重新接入，避免了在一些场景下不能节约承载资源、无法保证用户业务体验良好性，进而便于 选择合一或路由较短的SGwU和PGwU转发用户数据，从而有利于减少承载资源的浪费，有利于提高用户使用业务的体验。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明实施例的技术方案可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
在本实施例中还提供了一种控制用户设备的装置，该装置用于实现上述实施例及实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置可以以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图7是根据本发明实施例的控制用户设备的装置的结构框图，如图7所示，该装置包括：
确定模块72，设置为确定用户设备UE处于空闲态
指示模块74，设置为指示分组数据网网关PGW去激活UE的PDN连接。
在一实施方式中，上述的控制用户设备的装置可以是服务网关SGW或者控制面功能CPF。
通过该实施例，在确定模块72确定用户设备UE处于空闲态的情况下，指示模块74指示分组数据网网关PGW去激活UE的PDN连接，使得UE在发起附着接入到控制面和用户面分离的EPS网络后，在UE位置发生变化时，UE可以重新激活，有效避免了新的SGwU和之前接入的PGwU由于物理位置距离较远而导致的承载资源浪费、投递用户报文时延拉长，提高用户使用业务的体验。
根据本发明的另一个实施例，还提供了一种网关，设置为确定用户设 备UE处于空闲态，并指示分组数据网网关PGW去激活UE的PDN连接。
需要说明的是，该网关可以用于执行上述实施例中的控制用户设备的方法。
需要说明的是，该网关可以是服务网关SGW或者控制面功能CPF。
通过该实施例，通过上述网关去确定用户设备UE处于空闲态，并指示分组数据网网关PGW去激活UE的PDN连接，使得UE在发起附着接入到控制面和用户面分离的EPS网络后，在UE位置发生变化时，UE可以重新激活，有效避免了新的SGwU和之前接入的PGwU由于物理位置距离较远而导致的承载资源浪费、投递用户报文时延拉长，提高用户使用业务的体验。
根据本发明的另一个实施例，还提供了一种控制用户设备的系统，如图8所示，该系统包括：
网关82，设置为确定用户设备UE处于空闲态，并指示分组数据网网关PGW去激活UE的PDN连接；
PGW 84，设置为按照网关82的指示去激活UE的PDN连接。
通过该实施例，在网关确定用户设备UE处于空闲态的情况下，指示分组数据网网关PGW去激活UE的PDN连接，使得UE在发起附着接入到控制面和用户面分离的EPS网络后，在UE位置发生变化时，UE可以重新激活，有效避免了新的SGwU和之前接入的PGwU由于物理位置距离较远而导致的承载资源浪费、投递用户报文时延拉长，提高用户使用业务的体验。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
本发明的实施例还提供了一种存储介质。在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的程序代码：
S1，网关确定用户设备UE处于空闲态；
S2，网关指示分组数据网网关PGW去激活UE的PDN连接。
在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
本实施例中的示例可以参考上述实施例及实施方式中所描述的示例，本实施例在此不再赘述。
上述的本发明实施例的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明实施例不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。
工业实用性
通过本发明实施例，由于在网关确定UE处于空闲态的情况下，指示PGW去激活UE的PDN连接，使得UE在发起附着接入到控制面和用户面分离的EPS网络后，在UE位置发生变化时，UE可以重新激活，有效避免了新的SGwU和之前接入的PGwU由于物理位置距离较远而导致的承载资源浪费、投递用户报文时延拉长，提高用户使用业务的体验。

Claims (14)

  1. 一种控制用户设备的方法，包括：
    网关确定用户设备UE处于空闲态；
    所述网关指示分组数据网网关PGW去激活所述UE的分组数据网PDN连接。
  2. 根据权利要求1所述的方法，其中，所述网关指示所述PGW去激活所述UE的PDN连接包括：
    所述网关在确定所述UE处于空闲态之后，立即指示所述PGW去激活所述UE的PDN连接；或者
    所述网关在确定所述UE处于空闲态之后，检测预设时间间隔后所述UE是否处于空闲态；在所述预设时间间隔后所述UE处于空闲态的情况下，所述网关指示所述PGW去激活所述UE的PDN连接。
  3. 根据权利要求1或者2所述的方法，其中，网关确定用户设备UE处于空闲态包括：
    所述网关接收移动管理实体MME发送的用于通知所述网关所述UE进入空闲态的通知消息。
  4. 根据权利要求2所述的方法，其中，所述网关在确定所述UE处于空闲态之后，检测预设时间间隔后所述UE是否处于空闲态包括：
    所述网关检测在确定所述UE处于空闲态之后，直到经过所述预设时间间隔，是否始终未接收到移动管理实体MME发送的用于通知所述网关所述UE进入连接态的通知消息。
  5. 根据权利要求1所述的方法，其中，在所述网关指示所述PGW去激活所述UE的PDN连接之后，还包括：
    所述网关接收所述PGW发送第一重新激活指示；
    所述网关向所述UE发送第二重新激活指示，以指示所述UE的PDN连接重新激活。
  6. 根据权利要求5所述的方法，其中，所述第一重新激活指示和所述第 二重新激活指示中携带有重新激活原因值，其中，所述重新激活原因值用于指示使所述UE重新激活的原因。
  7. 根据权利要求6所述的方法，其中，所述网关向所述UE发送第二重新激活指示包括：
    所述网关将所述重新激活原因值透传给移动管理实体MME；
    所述MME将所述重新激活原因值转换为非接入层原因值NAS cause，并将携带有所述NAS cause的所述第二重新激活指示发送给所述UE。
  8. 根据权利要求1所述的方法，其中，所述网关包括以下之一：
    服务网关SGW；控制面功能CPF。
  9. 根据权利要求1所述的方法，其中，所述网关指示所述PGW去激活所述UE的PDN连接包括：
    所述网关判断数据传输路由是否需要优化；
    在所述数据传输路由需要优化的情况下，所述网关指示所述PGW去激活所述UE的PDN连接。
  10. 根据权利要求1所述的方法，其中，所述网关指示所述PGW去激活所述UE的PDN连接包括：
    所述网关分别指示所述PGW和移动管理实体MME去激活所述UE的PDN连接。
  11. 一种控制用户设备的装置，包括：
    确定模块，设置为确定用户设备UE处于空闲态；
    指示模块，设置为指示分组数据网网关PGW去激活所述UE的分组数据网PDN连接。
  12. 一种网关，设置为确定用户设备UE处于空闲态，并指示分组数据网网关PGW去激活所述UE的PDN连接。
  13. 一种控制用户设备的系统，包括：
    网关，设置为确定用户设备UE处于空闲态，并指示分组数据网网关PGW去激活所述UE的PDN连接；
    所述PGW，设置为按照所述网关的指示去激活所述UE的PDN连接。
  14. 一种存储介质，所述存储介质设置为存储用于执行权利要求1-10任一项的控制用户设备的方法。
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