CN111278139A

CN111278139A - Method, device and storage medium for managing PDU session

Info

Publication number: CN111278139A
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: 2020-06-12
Anticipated expiration: 2040-02-13
Also published as: CN111278139B

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 sending a service request message when the built 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. According to the method and the device, 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 condition that more interactive signaling is needed when the user plane resources are activated in the related technology is avoided, the time 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 and an apparatus for managing a Protocol Data Unit (PDU) session, and a storage medium.

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 to different DNs. In a fifth Generation (5rd Generation, 5G) network architecture, a PDU session can be set to active or inactive.

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 ue of the PDU session by using different procedures according to whether the ue of the PDU session is established and/or suspended.

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

Disclosure of Invention

In view of the above, the present disclosure provides a method, an apparatus, and a 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 for managing a protocol data unit, PDU, session, for use in a user equipment, the method including:

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

acquiring a PDU session identification list when the built PDU session has uplink data to be sent, wherein the PDU session identification list comprises a PDU session identifier to be activated;

and sending the service request message, wherein an uplink data state information unit of the service request message carries the PDU session identification list.

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

when the built 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 parameter 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, where the method is used in a network side device, and the method includes:

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 the PDU session with the uplink data to be sent.

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

acquiring a PDU session identification list from an uplink data state information unit of the service request message, wherein the PDU session identification 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 PDU session identifiers;

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

determining a target PDU session from the 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, in a user equipment, the apparatus including:

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 the activation of the user plane resource of the PDU session.

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

the acquiring unit is configured to acquire 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 configured to send the service request message, where an uplink data state information unit of the service request message carries the PDU session identifier list.

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

According to another aspect of the present disclosure, an apparatus for managing a PDU session is provided, where the apparatus is used in a network side device, and the apparatus includes:

a receiving module for receiving a 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 the PDU session with the 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 state information unit of the service request message, where the PDU session identifier list includes the PDU session identifier to be activated;

the activation unit is configured to activate 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 activation 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.

The method comprises the steps that user equipment sends a service request message when uplink data to be sent exist in an established PDU session, wherein the service request message is used for indicating to activate user plane resources of the PDU session; the user equipment can uniformly use the service request flow to activate the user plane resources for the uplink data to be sent, thereby avoiding the condition that more interactive signaling is needed when the user plane resources are activated in the related technology, shortening the time required for activating the user plane resources and reducing the realization complexity of the user equipment.

Drawings

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

Fig. 1 is a schematic structural diagram of a mobile communication system provided in 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 structural diagram of an apparatus for managing a PDU session according to an exemplary embodiment of the present disclosure;

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

fig. 6 shows a schematic structural diagram of a user equipment provided in 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 present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used exclusively 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.

Furthermore, in the following detailed description, numerous specific details are set forth 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 that are well known to those skilled in the art have not been described in detail so as 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 a fifth Generation (5rd Generation, 5G) network architecture, a PDU session can be set to active or inactive. When the PDU session is in an active state, the user plane resource and the control plane resource of the PDU session are established, and data can be transmitted 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 transmitted 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 ue of the PDU session by using different procedures according to whether the ue of the PDU session is established and/or suspended. However, more interactive signaling is required to activate the user plane resources, which requires a longer time and increases the complexity of the implementation of the user equipment. A suitable solution has not been provided in the related art.

Therefore, the embodiment of the disclosure provides a method, a device and a storage medium for managing a PDU session, and the embodiment of the disclosure transmits a service request message by a user equipment when an established PDU session has uplink data to be transmitted, wherein the service request message is used for indicating to activate a user plane resource of the PDU session; the user equipment can uniformly use the service request flow to activate the user plane resources for the uplink data to be sent, thereby avoiding the condition that more interactive signaling is needed when the user plane resources are activated in the related technology, shortening the time required for activating the user plane resources and reducing the realization complexity of the user equipment.

Referring to fig. 1, a schematic structural 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 (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, and this embodiment is not limited thereto.

Optionally, the mobile communication system is suitable for different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle to internet (V2X) architecture, and the like.

The mobile communication system includes: a network side device 120 and a 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), which may also be referred to as a base station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, the device providing the base station function in the 2G network includes a Base Transceiver Station (BTS), the device providing the base station function in the 3G network includes a node B (NodeB), the device providing the base station function in the 4G network includes an evolved node B (evolved NodeB, eNB), the device providing the base station function in the Wireless Local Area Network (WLAN) is an Access Point (AP), the device providing the base station function in the 5G system is a gNB, and a node B (ng-eNB) that continues to evolve, the access network device in the embodiment of the present disclosure further includes a device providing the base station function in a new communication system in the future, and the specific implementation manner of the network side device 120 in the embodiment of the present disclosure is not limited. The access network equipment may also include home base stations (HomeeNB, HeNB), relays (Relay), Pico base stations Pico, etc.

The core Network may be an Evolved Packet Core (EPC), a 5G core Network (5GCore Network), or a new core Network in a future communication system. The 5G CoreNetwork is composed of a set of devices, and implements Access and mobility Management functions (AMF) of functions such as mobility Management, User Plane Functions (UPF) providing functions such as packet routing forwarding and Quality of Service (QoS) Management, Session Management Functions (SMF) providing functions such as Session Management, IP address allocation and Management, and the like. The EPC may be composed of an MME providing functions such as mobility management, Gateway selection, etc., a Serving Gateway (S-GW) providing functions such as packet forwarding, etc., and a PDN Gateway (P-GW) providing functions such as terminal address allocation, rate control, etc.

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

The network side device 120 and the user equipment 140 establish a wireless connection over a wireless air interface. Optionally, the wireless air interface is a wireless air interface based on a 5G standard, for example, the wireless air interface is NR; or, the wireless air interface may also be a wireless air interface based on a 5G next generation mobile communication network technology standard; 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 the uplink data sent by the user equipment 140 through the wireless connection.

The user equipment 140 may refer to a device in data communication with the 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 unit, subscriber station, Mobile Station (MS), remote station, remote terminal equipment, mobile device, terminal equipment (terminal equipment), wireless communication device, user agent, or user equipment. The user equipment 140 may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc. Fig. 1 is only illustrated by using the user equipment 140 shown as a mobile phone, and the present embodiment does not limit the type of the user equipment 140. The user equipment 140 may receive the 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 a 5G system or a 5G next generation mobile communication technology system, the above network elements may have different names in the 5G system or the 5G next generation mobile communication technology system, but have the same or similar functions, and the embodiment of the present disclosure is not limited thereto.

It should be noted 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 technical solutions provided by the embodiments of the present disclosure, some terms related to the embodiments of the present disclosure are described below.

The state of the user equipment includes 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 recover the bearer through a Connection recovery (Connection Resume) procedure, so that the terminal enters a connected state. In the embodiment of the present disclosure, when there is uplink data to be sent, the ue uniformly uses a Service Request (english: Service Request) procedure to activate the user plane resource, so that the bearer can be quickly recovered.

A PDU session is a connection between a user equipment and a DN for providing a PDU connection service. The connection type may be an Internet Protocol (IP) connection, an ethernet connection, or an unstructured data connection. The PDU connection service supported by the 5G core network refers to a service providing PDU exchange between the user equipment and a DN determined by a 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 a PDU session based on a set of core network elements.

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

Referring to fig. 2, a flowchart of a method for managing a PDU session according to an exemplary embodiment of the present disclosure is shown, which is illustrated in the embodiment of fig. 1 when the method is used in the ue. The method comprises the following steps.

Step 201, when the built PDU session has uplink data to be sent, the ue sends a service request message.

Wherein the service request message is used to indicate the user plane resources activating the PDU session.

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

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

No matter the user plane resource of the PDU session is a suspended user plane resource or a user plane resource which is not established, the user equipment does not need to judge, but uniformly adopts a service request process to activate the user plane resource, namely, a service request message is sent to activate the user plane resource.

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

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

Step 203, the network side device activates the user plane resource of the PDU session according to the service request message.

And after receiving the service request message, the network side equipment activates the user plane resources of the PDU session. The PDU session is a PDU session with uplink data to be sent. Namely, the PDU session is established by the user equipment and there is uplink data to be sent.

To sum up, the embodiment of the present disclosure transmits, by the user equipment, a service request message when the established PDU session has uplink data to be transmitted, where the service request message is used to indicate to activate a user plane resource of the PDU session; the user equipment can uniformly use the service request flow to activate the user plane resources for the uplink data to be sent, thereby avoiding the condition that more interactive signaling is needed when the user plane resources are activated in the related technology, shortening the time required for activating the user plane resources and reducing the realization complexity of the user equipment.

Referring to fig. 3, a flowchart of a method for managing a PDU session according to another exemplary embodiment of the present disclosure is shown, which is illustrated in the embodiment of fig. 1 when the method is used in the ue. The method comprises the following steps.

Step 301, when the built PDU session has uplink data to be sent, the user equipment obtains a PDU session identifier list, where the PDU session identifier list includes a PDU session identifier to be activated.

When the PDU session established by the user equipment is in an activated state, if uplink data to be sent exists, the user equipment acquires user plane resources in which the uplink data to be sent exists; mapping user plane resources to PDU session identifiers according to configuration parameters of a Service Data Adaptation Protocol (SDAP) sub-layer; a PDU session identification list is generated that includes the PDU session identifier.

Optionally, the user plane resource where the uplink data to be sent exists includes a user plane resource corresponding to each of the multiple 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 forms the PDU conversation identifiers into a PDU conversation identification list, and the PDU conversation identification list comprises the PDU conversation 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 stratum and a non-access stratum. When uplink data to be sent exist, the access layer acquires user plane resources of 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 sublayer; the access layer makes the PDU conversation identifier into a PDU conversation identification list. The access stratum informs the non-access stratum of the user equipment of the PDU session identification list.

Step 302, the user equipment sends a service request message, and an uplink data state information unit of the service request message carries a PDU session identifier list.

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

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 a wireless air interface. The uplink data state information unit of the service request message carries a PDU session identifier list.

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

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

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

The PDU session is a PDU session with uplink data to be sent.

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

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

Optionally, the resource recovery process includes: when the user plane resources corresponding to the multiple PDU sessions are established and suspended, the network side equipment determines a target PDU session from the multiple 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 sorts the multiple PDU sessions according to the order of the service priorities corresponding to the multiple PDU sessions from high to low, and determines the first n PDU sessions as target PDU sessions, where n is a positive integer. Wherein, the service priority of the PDU conversation is preset.

Illustratively, the predetermined condition includes that the service priority is higher than a priority threshold, and/or that a Qos Class Identifier (QCI) is a specified value. Wherein, the priority threshold value and the designated value are set by default or are set by self-definition.

The embodiment of the present disclosure does not limit the setting manner of the preset condition.

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

The network side equipment recovers 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 establishing process includes: when the user plane resources corresponding to the multiple PDU sessions are not established, the network side equipment determines a target PDU session from the multiple PDU sessions and establishes the user plane resources of the target PDU session.

It should be noted that, in the process of determining the target PDU session from multiple PDU sessions, reference may be made to the process of determining the target PDU session in the resource recovery procedure, which is not described herein again.

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.

And after activating the user plane resources, 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 resources.

The activation result is used to indicate whether the activation of the user plane resource was successful. 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 activation is successful, and the second activation result is used to indicate that the user plane resource activation is failed.

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

Step 307, the user equipment receives a service reception message.

And 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 obtains an activation result from a PDU session reactivation result information unit of the service reception message, where the activation result is used to indicate whether the user plane resource is successfully activated.

To sum up, the embodiment of the present disclosure further determines, by the network side device, a target PDU session from the plurality of PDU sessions when the user plane resource corresponding to each of the plurality of PDU sessions is established and suspended; recovering the user plane resources 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 embodiments of the apparatus of the embodiments of the present disclosure, and for portions of the embodiments of the apparatus not described in detail, reference may be made to technical details disclosed in the above-mentioned method embodiments.

Referring to fig. 4, a schematic structural diagram of an apparatus for managing a PDU session 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, or a combination of both. The apparatus for managing a PDU session includes: a sending module 410.

A sending module 410, configured to send a service request message when there is uplink data to be sent in the established PDU session, where the service request message is used to indicate that a user plane resource of the PDU session is activated.

In a possible implementation manner, the sending module 410 further includes an obtaining unit and a sending unit;

the device comprises an acquisition unit, a sending unit and a receiving unit, wherein the acquisition unit is used for acquiring a PDU session identification list when the built PDU session has uplink data to be sent, and the PDU session identification list comprises a PDU session identifier to be activated;

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

In another possible implementation manner, the obtaining unit is further configured to: when the built PDU session has uplink data to be sent, acquiring user plane resources with the uplink data to be sent; mapping user plane resources to PDU session identifiers according to configuration parameters of a service data adaptation protocol SDAP sublayer; a PDU session identification list is generated that includes the PDU session identifier.

It should be noted that, when the apparatus provided in the foregoing embodiment implements the functions thereof, only the division of the above functional modules is illustrated, and in practical applications, the above functions may be distributed 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 complete all or part of the functions described above.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Referring to fig. 5, a schematic structural diagram of an apparatus for managing a PDU session according to another exemplary embodiment of the present disclosure is shown. The PDU session management device can be implemented by software, hardware or a combination of both as all or a part of the network side equipment. 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 a user plane resource of a PDU session according to the service request message, where the PDU session is a PDU session in which uplink data to be sent exists.

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 state information unit of a service request message, where the PDU session identifier list includes a PDU session identifier to be activated;

and the activation unit is used for 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 activation unit is further configured to: determining a PDU session corresponding to each of the plurality of PDU session identifiers; according to the configuration parameters of the SDAP sub-layer, judging whether the user plane resources corresponding to the PDU sessions are established and suspended; determining a target PDU session from the 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.

Referring to fig. 6, a schematic structural diagram of a user equipment according to an exemplary embodiment of the present disclosure is shown, where the user equipment may be the user equipment 140 in the mobile communication system shown in fig. 1. In this embodiment, a user equipment is taken as an example of a UE in an LTE system or a 5G system for explanation, where the user equipment 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.

The processor 61 includes one or more processing cores, and the 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 a communication component, which may be a communication chip, and the communication chip may include a receiving module, a transmitting module, a modulation and demodulation module, and the like, for modulating and/or demodulating information and receiving or transmitting the information through a wireless signal.

The memory 64 may be used to store instructions executable by the processor 61.

Memory 64 may store at least one application module 66 that functions as described. The application modules 66 may include: a sending module 661.

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

Further, 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 an eNB in an LTE system, or a gNB in a 5G system, and 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 connected to the processor 71 by a bus 75.

The processor 71 includes one or more processing cores, and the 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 a communication component, which may be a communication chip, and the communication chip may include a receiving module, a transmitting module, a modulation and demodulation module, and the like, for performing modulation and demodulation on information and receiving or transmitting the information through a wireless signal.

The memory 74 may be used to store processor 101 executable instructions.

The memory 74 may store at least one application module 76 that functions as described. 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 of the receiving step performed by the network side device in the above-mentioned method embodiments; the processor 71 is configured to execute the activation module 762 to implement the functions of the activation steps performed by the network side device in the foregoing method embodiments.

Further, the memory 74 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 disks.

An embodiment of the present disclosure further provides a user equipment, where the user equipment includes: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: the steps executed by the user equipment in the above method embodiments are realized.

The embodiment of the present disclosure further provides a network side device, where the network side device includes: 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-mentioned 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 in the various method embodiments described above.

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

The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory 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: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical 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 via 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 transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter 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.

The computer program instructions for carrying out operations of the present disclosure may be assembler 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 execute 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 type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).

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 storing the instructions comprises 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 flowchart 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.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques 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 a protocol data unit, PDU, session, for use in a user equipment, the method comprising:

2. The method of claim 1, wherein the sending a service request message when there is uplink data to be sent in the established PDU session comprises:

3. The method according to claim 2, wherein the obtaining a PDU session identifier list when there is uplink data to be sent in the established PDU session comprises:

4. A method for managing PDU sessions, which is used in a network side device, the method comprising:

receiving a service request message;

5. The method of claim 4, wherein the activating the user plane resources of the PDU session 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 a PDU session, the apparatus being used in a user equipment and comprising:

8. An apparatus for managing a PDU session, configured in a network side device, the apparatus comprising:

a receiving module for receiving a service request message;

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

wherein the processor is configured to:

10. A network side device, wherein 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;

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