CN111278139B

CN111278139B - Method, device and storage medium for managing PDU session

Info

Publication number: CN111278139B
Application number: CN202010090726.4A
Authority: CN
Inventors: 陈伟; 金逸
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-02-13
Filing date: 2020-02-13
Publication date: 2023-04-28
Anticipated expiration: 2040-02-13
Also published as: CN111278139A

Abstract

The present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, and a storage medium for managing a PDU session. The method comprises the following steps: and when the established PDU session has uplink data to be sent, sending a service request message, wherein the service request message is used for indicating to activate the user plane resource of the PDU session. According to the method and the device for activating the user plane resources, the user equipment uniformly uses the service request flow to activate the user plane resources for the uplink data to be sent, so that the situation that more interactive signaling is needed when the user plane resources are activated in the related technology is avoided, the time required for activating the user plane resources is shortened, and the implementation complexity of the user equipment is reduced.

Description

Method, device and storage medium for managing PDU session

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, and a storage medium for managing a protocol data unit (ProtocolData Unit, PDU) session.

Background

A PDU session is a connection between a user equipment and a Data Network (DN), and the user equipment may initiate the establishment of multiple PDU sessions to connect to the same DN or different DNs. In the fifth generation (5rd Generation,5G) network architecture, a PDU session may be set to an active state or a deactivated state.

In the related art, when a PDU session is in an active state, if there is uplink data to be transmitted through the PDU session, the ue activates the user plane resources of the PDU session by adopting different procedures according to whether the user plane resources of the PDU session are established and/or suspended.

However, more interactive signaling is required to activate the user plane resources of the PDU session, so that the time required is longer, and the implementation complexity of the user equipment is increased. A suitable solution has not been provided in the related art.

Disclosure of Invention

In view of this, the present disclosure proposes a method, apparatus and storage medium for managing a PDU session.

The technical scheme comprises the following steps:

according to an aspect of the present disclosure, there is provided a method of managing a protocol data unit, PDU, session, for use in a user equipment, the method comprising:

and when the established PDU session has uplink data to be sent, sending a service request message, wherein the service request message is used for indicating to activate the user plane resource of the PDU session.

In one possible implementation manner, the sending a service request message when the PDU session is established and there is uplink data to be sent includes:

When the established PDU session has uplink data to be sent, a PDU session identification list is obtained, wherein the PDU session identification list comprises a PDU session identifier to be activated;

and sending the service request message, wherein the PDU session identifier list is carried in an uplink data state information unit of the service request message.

In another possible implementation manner, the acquiring the PDU session identifier list when the established PDU session has uplink data to be sent includes:

when the established PDU session has uplink data to be sent, acquiring the user plane resource with the uplink data to be sent;

mapping the user plane resource to the PDU session identifier according to the configuration parameters of a service data adaptation protocol SDAP sub-layer;

generating the PDU session identification list including the PDU session identifier.

According to another aspect of the present disclosure, there is provided a method for managing a PDU session, for use in a network side device, the method comprising:

receiving a service request message;

and activating the user plane resource of the PDU session according to the service request message, wherein the PDU session is a PDU session with uplink data to be sent.

In a possible implementation manner, the activating, according to the service request message, a user plane resource of the PDU session includes:

acquiring a PDU session identifier list from an uplink data state information unit of the service request message, wherein the PDU session identifier list comprises the PDU session identifier to be activated;

and activating the user plane resource corresponding to the PDU session identifier.

In another possible implementation manner, the PDU session identifier to be activated includes a plurality of PDU session identifiers, and the activating the user plane resource corresponding to the PDU session identifier includes:

determining the PDU session corresponding to each of the plurality of PDU session identifiers;

judging whether the user plane resources corresponding to each of the PDU sessions are established and suspended according to the configuration parameters of the SDAP sub-layer;

determining a target PDU session from a plurality of PDU sessions when the user plane resources corresponding to each of the plurality of PDU sessions have been established and suspended;

and recovering the user plane resources of the target PDU session.

According to another aspect of the present disclosure, there is provided an apparatus for managing a PDU session, for use in a user equipment, the apparatus comprising:

And the sending module is used for sending a service request message when the established PDU session has uplink data to be sent, wherein the service request message is used for indicating to activate the user plane resource of the PDU session.

In one possible implementation manner, the sending module further comprises an obtaining unit and a sending unit;

the acquiring unit is configured to acquire a PDU session identifier list when uplink data to be sent exists in the established PDU session, where the PDU session identifier list includes a PDU session identifier to be activated;

the sending unit is configured to send the service request message, where the PDU session identifier list is carried in an uplink data status information unit of the service request message.

In another possible implementation manner, the acquiring unit is further configured to:

According to another aspect of the present disclosure, there is provided an apparatus for managing a PDU session, for use in a network side device, the apparatus comprising:

the receiving module is used for receiving the service request message;

and the activation module is used for activating the user plane resource of the PDU session according to the service request message, wherein the PDU session is a PDU session with uplink data to be sent.

In one possible implementation, the activation module includes: an acquisition unit and an activation unit;

the acquiring unit is configured to acquire a PDU session identifier list from an uplink data status information unit of the service request message, where the PDU session identifier list includes the PDU session identifier to be activated;

and the activating unit is used for activating the user plane resource corresponding to the PDU session identifier.

In another possible implementation, the PDU session identifier to be activated includes a plurality of the PDU session identifiers, and the activating unit is further configured to:

and recovering the user plane resources of the target PDU session.

According to another aspect of the present disclosure, there is provided a user equipment including: a processor; a memory for storing processor-executable instructions;

wherein the processor is configured to:

According to another aspect of the present disclosure, there is provided a network side device, including: a processor; a memory for storing processor-executable instructions;

wherein the processor is configured to:

receiving a service request message;

According to another aspect of the present disclosure, there is provided a non-transitory computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the above-described method.

According to the embodiment of the disclosure, when the established PDU session exists uplink data to be transmitted, the user equipment transmits a service request message, wherein the service request message is used for indicating to activate user plane resources of the PDU session; the user equipment uniformly uses the service request flow to activate the user plane resources for the uplink data to be transmitted, so that the condition that more interactive signaling is needed when the user plane resources are activated in the related technology is avoided, the time required for activating the user plane resources is shortened, and the implementation complexity of the user equipment is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features and aspects of the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 illustrates a schematic structure of a mobile communication system provided by an exemplary embodiment of the present disclosure;

FIG. 2 illustrates a flow chart of a method of managing PDU sessions provided by an exemplary embodiment of the present disclosure;

fig. 3 illustrates a flow chart of a method of managing PDU sessions provided by another exemplary embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating a structure of an apparatus for managing PDU sessions according to an exemplary embodiment of the present disclosure;

Fig. 5 is a schematic structural view illustrating an apparatus for managing a PDU session according to another exemplary embodiment of the present disclosure;

fig. 6 illustrates a schematic structure of a user equipment according to an exemplary embodiment of the present disclosure;

fig. 7 shows a schematic structural diagram of a network side device according to an exemplary embodiment of the present disclosure.

Detailed Description

Various exemplary embodiments, features and aspects of the disclosure will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

In addition, numerous specific details are set forth in the following detailed description in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements, and circuits well known to those skilled in the art have not been described in detail in order not to obscure the present disclosure.

A PDU session is a connection between a user equipment and a DN, and the user equipment may initiate the establishment of multiple PDU sessions to connect to the same DN or to different DNs. In the fifth generation (5rd Generation,5G) network architecture, a PDU session may be set to an active state or a deactivated state. When the PDU session is in an active state, both user plane resources and control plane resources of the PDU session are established, and data can be transferred between the user equipment and the DN through the PDU session. When the PDU session is in a deactivated state, the user plane air interface resource and the control plane resource of the PDU session both reserve partial information, and data cannot be transferred between the user equipment and the DN through the PDU session.

In the related art, when a PDU session is in an active state, if there is uplink data to be transmitted through the PDU session, the ue activates the user plane resources of the PDU session by adopting different procedures according to whether the user plane resources of the PDU session are established and/or suspended. However, more interactive signaling is required when the user plane resource is activated, so that the time is longer, and the implementation complexity of the user equipment is increased. A suitable solution has not been provided in the related art.

To this end, embodiments of the present disclosure provide a method, an apparatus, and a storage medium for managing a PDU session, where in the embodiments of the present disclosure, a user equipment sends a service request message when an established PDU session has uplink data to be sent, where the service request message is used to indicate a user plane resource for activating the PDU session; the user equipment uniformly uses the service request flow to activate the user plane resources for the uplink data to be transmitted, so that the condition that more interactive signaling is needed when the user plane resources are activated in the related technology is avoided, the time required for activating the user plane resources is shortened, and the implementation complexity of the user equipment is reduced.

Referring to fig. 1, a schematic diagram of a mobile communication system according to an exemplary embodiment of the present disclosure is shown. The mobile communication system may be a long term evolution (Long Term Evolution, LTE) system, or may be a 5G system, where the 5G system is also called a New Radio (NR) system, or may be a next generation mobile communication technology system of 5G, which is not limited in this embodiment.

Optionally, the mobile communication system is applicable to different network architectures including, but not limited to, a relay network architecture, a dual link architecture, a car networking (Vehicle to Everything, V2X) architecture, etc.

The mobile communication system includes: network-side device 120 and user device 140.

Network-side device 120 may include an access network device, a core network-side device, and a DN.

The access network device may be a Base Station (BS), also referred to as a base station device, and is a device deployed in a radio access network (Radio Access Network, RAN) to provide wireless communication functions. For example, the device for providing a base station function in the 2G network includes a base radio transceiver station (basetransceiver station, BTS), the device for providing a base station function in the 3G network includes a node B (NodeB), the device for providing a base station function in the 4G network includes an evolved NodeB (eNB), the device for providing a base station function in the wireless local area network (wireless local area networks, WLAN) is an Access Point (AP), the device for providing a base station function in the 5G system is a gNB, and the device for providing a base station function in the future new communication system is a continuously evolved NodeB (ng-eNB), and the access network device in the embodiment of the present disclosure further includes a device for providing a base station function in the future new communication system, and the specific implementation of the network side device 120 is not limited. The access network devices may also include home base stations (homeenbs, henbs), relays (relays), pico base stations Pico, etc.

The Core Network may be an evolved packet Core (evolved packet Core, EPC), 5G Core (5G Core Network), or a new Core Network in future communication systems. The 5G CoreNetwork is composed of a set of devices, and implements an access and mobility management function (Access and Mobility Management Function, AMF) for mobility management and the like, a User plane function (User PlaneFunction, UPF) for providing packet routing forwarding and quality of service (Quality of Service, qoS) management and the like, a session management function (Session Management Function, SMF) for providing session management, IP address allocation and management and the like. The EPC may be composed of an MME providing functions of mobility management, gateway selection, etc., a Serving Gateway (S-GW) providing functions of packet forwarding, etc., and a PDN Gateway (P-GW) providing functions of terminal address allocation, rate control, etc.

The DN may be an operator service, internet access, or a third party service, etc. This embodiment is not limited thereto.

The network side device 120 and the user device 140 establish a wireless connection through a wireless air interface. Optionally, the wireless air interface is a wireless air interface based on 5G standard, such as the wireless air interface is NR; or, the wireless air interface can also be a wireless air interface based on the technical standard of the next generation mobile communication network of 5G; alternatively, the wireless air interface may be a wireless air interface based on the 4G standard (LTE system). The network-side device 120 may receive uplink data sent by the user equipment 140 through a wireless connection.

User equipment 140 may refer to a device in data communication with network-side device 120. The user equipment 140 may communicate with one or more core networks via a radio access network. The user equipment 140 may be various forms of user equipment, access terminal equipment, subscriber units, subscriber stations, mobile Stations (MSs), remote stations, remote terminal equipment, mobile equipment, terminals, terminal equipment (terminally), wireless communication devices, user agents, or user equipment. The user equipment 140 may also be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a Personal digital assistant (Personal DigitalAssistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc. In fig. 1, only the user equipment 140 is illustrated as a mobile phone, and the type of the user equipment 140 is not limited in this embodiment. The user equipment 140 may receive downlink data sent by the network side device 120 through a wireless connection with the network side device 120.

It should be noted that, when the mobile communication system shown in fig. 1 adopts the 5G system or the next generation mobile communication technology system of 5G, the above-mentioned network elements may have different names in the 5G system or the next generation mobile communication technology system of 5G, but have the same or similar functions, which is not limited by the embodiments of the present disclosure.

Another point to be noted is that in the mobile communication system shown in fig. 1, one or more network side devices 120 and one or more user devices 140 may be included, and one network side device 120 and one user device 140 are illustrated in fig. 1, but the embodiment of the present disclosure is not limited thereto.

In order to facilitate understanding of the technical solutions provided by the embodiments of the present disclosure, some terms involved in the embodiments of the present disclosure are described below.

The states of the user equipment include a connected state and an idle state. Wherein the suspended state is one of the idle states. In the connection suspension flow, the context of the user equipment and the context of the bearer are reserved, so that the user equipment enters a suspension state. In the related art, when there is uplink data to be sent, the ue may resume the bearer through a connection resume (english: connection Resume) flow, so that the terminal enters a connected state. In the embodiment of the disclosure, when there is uplink data to be sent, the user equipment uniformly uses a Service Request (english) flow to activate the user plane resource, so that the bearer can be quickly recovered.

The PDU session is a connection between the user equipment and the DN for providing a PDU connection service. The connection type may be a protocol (internet protocol, IP) connection, an ethernet connection, or an unstructured data connection, among others, for interconnection between networks. The PDU connection service supported by the 5G core network refers to a service providing PDU exchange between the user equipment and the DN determined by the data network name (Data Network Name, DNN). The user equipment may initiate the establishment of one or more PDU sessions to connect to the same DN or to different DNs. The user equipment may initiate the establishment of the PDU session based on a set of core network elements.

The method for managing PDU session provided by the embodiment of the disclosure comprises the following steps: and the user equipment enters a connection state from a temporary state, and activates user plane resources of the PDU session which is initiated by the user equipment. In the following, several exemplary embodiments are used to describe a method for managing PDU sessions provided by embodiments of the present disclosure.

Referring to fig. 2, a flowchart of a method for managing PDU sessions according to an exemplary embodiment of the present disclosure is shown, and the present embodiment is illustrated by using the method in the user equipment shown in fig. 1. The method comprises the following steps.

In step 201, the ue sends a service request message when the established PDU session has uplink data to be sent.

Wherein the service request message is used for indicating the user plane resource for activating the PDU session.

When the state of the established PDU session is in an active state, if uplink data to be sent exists on the user plane resource of the PDU session, the user equipment sends a service request message to the network side equipment. The service request message is used for indicating the network side equipment to activate the user plane resource of the PDU session.

The PDU session is a connection with the network side equipment established by the user equipment and is used for providing PDU connection service.

Whether the user plane resource of the PDU session is a suspended user plane resource or a user plane resource which is not established yet, the user equipment does not need to judge, but uniformly adopts a service request process to activate the user plane resource, namely, sends a service request message to activate the user plane resource.

In step 202, the network side device receives a service request message.

And the network side equipment receives the service request message sent by the user equipment.

In step 203, the network side device activates user plane resources of the PDU session according to the service request message.

After receiving the service request message, the network side device activates user plane resources of the PDU session. The PDU session is a PDU session in which uplink data to be transmitted exists. I.e. a PDU session established for the user equipment and in which there is uplink data to be transmitted.

In summary, in the embodiment of the disclosure, when the established PDU session has uplink data to be sent, the ue sends a service request message, where the service request message is used to indicate a user plane resource for activating the PDU session; the user equipment uniformly uses the service request flow to activate the user plane resources for the uplink data to be transmitted, so that the condition that more interactive signaling is needed when the user plane resources are activated in the related technology is avoided, the time required for activating the user plane resources is shortened, and the implementation complexity of the user equipment is reduced.

Referring to fig. 3, a flowchart of a method for managing PDU sessions according to another exemplary embodiment of the present disclosure is shown, and this embodiment is illustrated by using the method in the user equipment shown in fig. 1. The method comprises the following steps.

Step 301, when the established PDU session has uplink data to be sent, the user equipment acquires a PDU session identifier list, wherein the PDU session identifier list includes a PDU session identifier to be activated.

When the state of the PDU session established by the user equipment is in an active state, if uplink data to be transmitted exists, the user equipment acquires user plane resources with the uplink data to be transmitted; mapping user plane resources to PDU session identifiers according to configuration parameters of a service data adaptation protocol (Service Data Adaptation Protocol, SDAP) sub-layer; a PDU session identification list including PDU session identifiers is generated.

Optionally, the user plane resources with uplink data to be sent include user plane resources corresponding to each of the plurality of PDU sessions; for the user plane resource of each PDU session, the user equipment maps the user plane resource to the PDU session identifier of the PDU session according to the configuration parameters of the SDAP sub-layer; the user equipment composes a plurality of PDU session identifiers into a PDU session identification list including the plurality of PDU session identifiers.

Wherein the PDU session identifier is used to uniquely identify a PDU session among a plurality of PDU sessions.

Optionally, the user equipment includes an access layer and a non-access layer. When uplink data to be sent exists, the access layer acquires user plane resources with the uplink data to be sent; the access layer maps the user plane resource to the PDU session identifier according to the configuration parameters of the SDAP sub-layer; the access layer composes the PDU session identifiers into a PDU session identification list. The access layer informs the non-access layer of the user equipment of the list of PDU session identifications.

In step 302, the ue sends a service request message, where an uplink data status information unit of the service request message carries a PDU session identifier list.

Optionally, after receiving the PDU session identifier list, the non-access layer of the user equipment sends a service request message carrying the PDU session identifier list through a wireless air interface.

In step 303, the network side device receives the service request message.

And the network side equipment receives the service request message sent by the user equipment through the wireless air interface. The uplink data status information unit of the service request message carries a PDU session identifier list.

In step 304, the network side device obtains a PDU session identifier list from the uplink data status information unit of the service request message, where the PDU session identifier list includes a PDU session identifier to be activated.

After receiving the service request message, the network side device obtains the PDU session identifier list from the uplink data status information unit of the service request message. Wherein the PDU session identification list comprises one or more PDU session identifiers to be activated.

In step 305, the network side device activates the user plane resource corresponding to the PDU session identifier.

The PDU session is a PDU session in which uplink data to be transmitted exists.

Optionally, the network side device activates the user plane resources corresponding to all or part of the PDU session identifiers in the PDU session identifier list according to the PDU session identifier list.

Optionally, the PDU session identifier to be activated included in the PDU session identifier list includes a plurality of PDU session identifiers, and the network side device determines PDU sessions corresponding to the plurality of PDU session identifiers respectively; and judging whether user plane resources corresponding to each of the PDU sessions are established and suspended according to the configuration parameters of the SDAP sub-layer. When the user plane resources corresponding to each of the PDU sessions are established and suspended, recovering the user plane resources by adopting a resource recovery flow; when the user plane resources corresponding to the PDU sessions are not established, the resource establishment flow is adopted to establish the user plane resources.

Optionally, the resource recovery procedure includes: when the user plane resources corresponding to each of the plurality of PDU sessions are established and suspended, the network side equipment determines a target PDU session from the plurality of PDU sessions, and recovers the user plane resources of the target PDU session.

Optionally, the network side device determines the target PDU session from the multiple PDU sessions according to a preset condition.

Illustratively, the network side device orders the plurality of PDU sessions according to the order of the service priorities corresponding to the plurality of PDU sessions from high to low, and determines the PDU session positioned in the first n as the target PDU session, wherein n is a positive integer. Wherein, the service priority of PDU conversation is preset.

Illustratively, the preset conditions include traffic priority above a priority threshold and/or Qos class identification (QoS Class Identifier, QCI) being a specified value. The priority threshold and the specified value are set by default or are set by user.

It should be noted that, the setting manner of the preset condition is not limited in the embodiments of the present disclosure.

The target PDU session may include one or more PDU sessions.

The network side equipment restores the user plane resources of the target PDU session and releases the user plane resources of other PDU sessions, wherein the other PDU sessions are other PDU sessions except the target PDU session in the plurality of PDU sessions.

Optionally, the resource establishment procedure includes: when the user plane resources corresponding to the PDU sessions are not established, the network side equipment determines a target PDU session from the PDU sessions, and establishes the user plane resources of the target PDU session.

It should be noted that, the process of determining the target PDU session from the multiple PDU sessions by the network side device may refer to the process of determining the target PDU session in the above resource recovery procedure, which is not described herein.

In step 306, the network side device sends a service receiving message, where the service receiving message is used to indicate an activation result of the user plane resource.

After the network side equipment activates the user plane resource, the network side equipment sends a service receiving message to the user equipment, wherein the service receiving message is used for indicating the activation result of the user plane resource.

The activation result is used for indicating whether the user plane resource is successfully activated. For example, the activation result includes one of a first activation result and a second activation result, where the first activation result is used to indicate that the user plane resource is successfully activated, and the second activation result is used to indicate that the user plane resource is failed to be activated.

Optionally, the PDU session reactivation result information unit of the service receiving message carries an activation result of the user plane resource.

In step 307, the user equipment receives the service receipt message.

The user equipment receives a service receiving message sent by the network side equipment, wherein the service receiving message is used for indicating the activation result of the user plane resource.

Optionally, the ue acquires an activation result from a PDU session reactivation result information element of the service reception message, where the activation result is used to indicate whether the user plane resource is activated successfully.

In summary, the embodiments of the present disclosure further determine, by the network side device, a target PDU session from among the plurality of PDU sessions when the user plane resources corresponding to each of the plurality of PDU sessions have been established and suspended; restoring the user plane resource of the target PDU session; the network side equipment can selectively recover the suspended user plane resources, and the activation efficiency of the user plane resources is further improved.

The following are device embodiments of the disclosed embodiments, and for parts of the device embodiments that are not described in detail, reference may be made to the technical details disclosed in the method embodiments described above.

Referring to fig. 4, a schematic diagram of an apparatus for managing PDU sessions according to an exemplary embodiment of the present disclosure is shown. The means for managing PDU sessions may be implemented as all or part of the user equipment by software, hardware, and a combination of both. The apparatus for managing a PDU session includes: a transmitting module 410.

A sending module 410, configured to send a service request message when the established PDU session has uplink data to be sent, where the service request message is used to indicate a user plane resource for activating the PDU session.

In one possible implementation, the sending module 410 further includes an acquiring unit and a sending unit;

an obtaining unit, configured to obtain a PDU session identifier list when the established PDU session has uplink data to be sent, where the PDU session identifier list includes a PDU session identifier to be activated;

and the sending unit is used for sending a service request message, and the PDU session identification list is carried in an uplink data state information unit of the service request message.

In another possible implementation, the obtaining unit is further configured to: when the established PDU session has uplink data to be transmitted, acquiring user plane resources with the uplink data to be transmitted; mapping user plane resources to PDU session identifiers according to configuration parameters of a SDAP sub-layer of a service data adaptation protocol; a PDU session identification list including PDU session identifiers is generated.

It should be noted that, when the apparatus provided in the foregoing embodiment implements the functions thereof, only the division of the foregoing functional modules is used as an example, in practical application, the foregoing functional allocation may be implemented by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to implement all or part of the functions described above.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Referring to fig. 5, a schematic structural diagram of an apparatus for managing PDU sessions according to another exemplary embodiment of the present disclosure is shown. The means for managing PDU sessions may be implemented as all or part of the network side device by software, hardware, and a combination of both. The apparatus for managing a PDU session includes: a receiving module 510 and an activating module 520.

A receiving module 510, configured to receive a service request message;

an activating module 520, configured to activate, according to the service request message, a user plane resource of a PDU session, where the PDU session is a PDU session with uplink data to be sent.

In one possible implementation, the activation module 520 includes: an acquisition unit and an activation unit;

an obtaining unit, configured to obtain a PDU session identifier list from an uplink data status information unit of the service request message, where the PDU session identifier list includes a PDU session identifier to be activated;

In another possible implementation, the PDU session identifier to be activated comprises a plurality of PDU session identifiers, the activation unit being further configured to: determining PDU session corresponding to each of the plurality of PDU session identifiers; judging whether user plane resources corresponding to each of the PDU sessions are established and suspended according to configuration parameters of the SDAP sub-layer; when the user plane resources corresponding to each of the plurality of PDU sessions are established and suspended, determining a target PDU session from the plurality of PDU sessions; and recovering the user plane resources of the target PDU session.

Referring to fig. 6, a schematic diagram of a configuration of a ue, which may be the ue 140 in the mobile communication system shown in fig. 1, according to an exemplary embodiment of the present disclosure is shown. The present embodiment is described taking UE in an LTE system or a 5G system as an example, where the UE includes: a processor 61, a receiver 62, a transmitter 63, a memory 64 and a bus 65. The memory 64 is connected to the processor 61 by a bus 65.

Processor 61 includes one or more processing cores, and processor 61 executes various functional applications and information processing by running software programs and modules.

The receiver 62 and the transmitter 63 may be implemented as one communication component, which may be a communication chip, in which a receiving module, a transmitting module, a modem module, etc. may be included for modulating and/or demodulating information and receiving or transmitting the information through a wireless signal.

Memory 64 may be used to store instructions executable by processor 61.

The memory 64 may store at least one functionally described application module 66. The application modules 66 may include: a transmitting module 661.

The processor 61 is configured to execute the sending module 661 to implement the functions related to the sending steps performed by the user equipment in the above-described respective method embodiments.

Furthermore, the memory 64 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

Referring to fig. 7, a schematic structural diagram of a network side device according to an exemplary embodiment of the present disclosure is shown. In this embodiment, a network side device is illustrated by taking an eNB in an LTE system or a gNB in a 5G system as an example, where the network side device includes: a processor 71, a receiver 72, a transmitter 73, a memory 74 and a bus 75. The memory 74 is coupled to the processor 71 by a bus 75.

Processor 71 includes one or more processing cores, and processor 71 executes various functional applications and information processing by running software programs and modules.

The receiver 72 and the transmitter 73 may be implemented as one communication component, which may be a communication chip, and the communication chip may include a receiving module, a transmitting module, a modem module, etc. for modulating and demodulating information and receiving or transmitting the information through a wireless signal.

Memory 74 may be used to store instructions executable by processor 101.

The memory 74 may store at least one functionally described application module 76. The application modules 76 may include: a receiving module 761 and an activating module 762.

The processor 71 is configured to execute the receiving module 761 to implement the functions related to the receiving steps performed by the network side device in the above-described method embodiments; the processor 71 is configured to execute the activation module 762 to implement the functions related to the activation steps performed by the network side device in the above-described method embodiments.

Furthermore, the memory 74 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The embodiment of the disclosure also provides a user equipment, which comprises: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: the steps performed by the user equipment in the above-described respective method embodiments are implemented.

The embodiment of the disclosure also provides a network side device, which comprises: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to implement the steps performed by the network side device in the above-described respective method embodiments.

The disclosed embodiments also provide a non-transitory computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the methods of the various method embodiments described above.

The present disclosure may be a system, method, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for causing a processor to implement aspects of the present disclosure.

The computer readable storage medium may be a tangible device that can hold and store instructions for use by an instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: portable computer disks, hard disks, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static Random Access Memory (SRAM), portable compact disk read-only memory (CD-ROM), digital Versatile Disks (DVD), memory sticks, floppy disks, mechanical coding devices, punch cards or in-groove structures such as punch cards or grooves having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media, as used herein, are not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., optical pulses through fiber optic cables), or electrical signals transmitted through wires.

The computer readable program instructions described herein may be downloaded from a computer readable storage medium to a respective computing/processing device or to an external computer or external storage device over a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmissions, wireless transmissions, routers, firewalls, switches, gateway computers and/or edge servers. The network interface card or network interface in each computing/processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium in the respective computing/processing device.

Computer program instructions for performing the operations of the present disclosure can be assembly instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, c++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer readable program instructions may be executed entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, aspects of the present disclosure are implemented by personalizing electronic circuitry, such as programmable logic circuitry, field Programmable Gate Arrays (FPGAs), or Programmable Logic Arrays (PLAs), with state information of computer readable program instructions, which can execute the computer readable program instructions.

Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.

These computer readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer readable program instructions may also be stored in a computer readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer readable medium having the instructions stored therein includes an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.

The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvement of the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A method for managing protocol data unit, PDU, sessions, for use in a user equipment, the method comprising:

the user equipment enters a connection state from a pause state, and when the established PDU session has uplink data to be sent, a service request message is sent, wherein the service request message is used for indicating to activate user plane resources of the PDU session, and the user plane resources comprise suspended user plane resources;

wherein the suspension state is one of idle states, and the suspension state is used for indicating that the context of the user equipment and the context of the bearer are reserved in a connection suspension flow.

2. The method of claim 1, wherein the sending a service request message when the established PDU session has uplink data to send comprises:

3. The method according to claim 2, wherein the obtaining the PDU session identification list when the established PDU session has uplink data to be transmitted comprises:

4. A method for managing PDU sessions, for use in a network-side device, the method comprising:

Receiving a service request message;

activating user plane resources of the PDU session when the user equipment enters a connection state from a pause state according to the service request message, wherein the PDU session is a PDU session with uplink data to be sent, and the user plane resources comprise suspended user plane resources;

5. The method of claim 4, wherein activating the user plane resources of the PDU session when the user equipment enters the connected state from the suspended state according to the service request message comprises:

6. The method of claim 5, wherein the PDU session identifier to be activated comprises a plurality of PDU session identifiers, and wherein the activating the user plane resource corresponding to the PDU session identifier comprises:

and recovering the user plane resources of the target PDU session.

7. An apparatus for managing PDU sessions, for use in a user equipment, the apparatus comprising:

a sending module, configured to enter a connection state from a suspended state by the ue, and send a service request message when uplink data to be sent exists in the established PDU session, where the service request message is used to indicate a user plane resource for activating the PDU session, and the user plane resource includes a suspended user plane resource;

8. An apparatus for managing PDU sessions, for use in a network-side device, the apparatus comprising:

The receiving module is used for receiving the service request message;

an activation module, configured to activate, according to the service request message, a user plane resource of the PDU session when the ue enters a connection state from a suspended state, where the PDU session is a PDU session in which uplink data to be sent exists, and the user plane resource includes a suspended user plane resource;

9. A user device, the user device comprising: a processor; a memory for storing processor-executable instructions;

wherein the processor is configured to:

10. A network side device, characterized in that the network side device comprises: a processor; a memory for storing processor-executable instructions;

wherein the processor is configured to:

receiving a service request message;

activating user plane resources of a PDU session when the user equipment enters a connection state from a pause state according to the service request message, wherein the PDU session is a PDU session with uplink data to be sent, and the user plane resources comprise suspended user plane resources;

11. A non-transitory computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method of any of claims 1 to 6.