WO2017076156A1 - Procédé de commande de libération de contexte d'équipement utilisateur (ue) et appareil associé, et procédé et appareil de radiomessagerie - Google Patents

Procédé de commande de libération de contexte d'équipement utilisateur (ue) et appareil associé, et procédé et appareil de radiomessagerie Download PDF

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Publication number
WO2017076156A1
WO2017076156A1 PCT/CN2016/102046 CN2016102046W WO2017076156A1 WO 2017076156 A1 WO2017076156 A1 WO 2017076156A1 CN 2016102046 W CN2016102046 W CN 2016102046W WO 2017076156 A1 WO2017076156 A1 WO 2017076156A1
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WIPO (PCT)
Prior art keywords
base station
context
notification
coverage
leave
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PCT/CN2016/102046
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English (en)
Chinese (zh)
Inventor
梁靖
刘建华
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电信科学技术研究院
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Publication of WO2017076156A1 publication Critical patent/WO2017076156A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/34—Selective release of ongoing connections

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a UE context and a control method and apparatus thereof, and a paging method and apparatus.
  • MTC Machine Type Communication
  • the MTC device In many application scenarios of Machine Type Communication (MTC), the MTC device only sends small data volume data to the network side.
  • the traditional data transmission method will generate large signaling overhead and the system efficiency is low.
  • UE User Equipment
  • RRC Radio Resource Control
  • the handover signaling overhead due to UE mobility will increase. Therefore, a suspended state is introduced, in which the context of the access layer (AS) and the non-access stratum (NAS) of the UE is maintained, but the state of the RRC of the UE is similar to the idle (Idle) state. Under the behavior, mobility is achieved through the cell reselection process.
  • the network When the UE has no data to send, the network will configure the UE in this state.
  • MTC aims to integrate many different types of communication technologies, such as machine-to-machine communication, machine control communication, human-computer interaction communication, and mobile internet communication, thereby promoting social production and lifestyle. development of. It is expected that the business of human-to-human communication may only account for 1/3 of the entire UE market, and a larger amount of communication is the inter-machine (small bandwidth system) communication service.
  • NB-IoT is introduced as follows:
  • Narrow Band Internet of Things (NB-IoT) Work Item (WI) was adopted and launched in the 3GPP Release 13 (Release 13) phase.
  • the goal of the narrowband Internet WI phase is the absence of the Cellular Internet of Things (CIoT).
  • Line access is standardized for technology.
  • the technology is extended based on LTE/LTE-A.
  • the main network characteristics/targets are: enhanced indoor coverage, support for a large number of low-speed device access, low latency sensitivity, reduced device cost, reduced device power consumption, and optimized network architecture.
  • NB-IOT user equipment has low mobility
  • the time for data transmission between the NB-IOT user equipment and the network side is controllable; that is, the NB-IOT user equipment can only access during the specified time period of the network;
  • the data transmission performed by the NB-IOT user equipment and the network side does not require high real-time data transmission, that is, it has time tolerance;
  • NB-IOT user equipment is energy limited and requires extremely low power consumption
  • NB-IOT user equipment has low implementation complexity.
  • An actual NB-IOT user equipment may have one or more of the above characteristics.
  • the configuration of the AS layer of the UE such as the AS layer security configuration, the bearer related configuration, and the L1/L2 related configuration, will be maintained.
  • the eNB will assign a Resume ID to the UE to recover the relevant configuration.
  • the associated network node stores the context information associated with the S1-MME and the S1-U, which means that the base station (eNB) and the Mobility Management Entity (MME) will hold the S1AP UE context information.
  • the UE's mobility procedure is the same as the Idle state, such as performing cell reselection and the like.
  • the eNB when the UE enters the suspended state, the eNB saves its UE content, and restores the RRC connection for the next time the UE performs data transmission. For example, when transmitting infrequent data, the NB-IOT user equipment may be in a suspended state for a long time, during which the UE may move to another eNB to cause UE content to fail. The source eNB cannot release the UE context in time because it does not know that the UE has left its coverage, and also affects the overall performance of the system.
  • An embodiment of the present application provides a method and device for releasing a UE context and a control thereof, and a paging method and apparatus, for enabling a source base station to release a UE when a UE in a suspended state is about to leave the source base station Context, improve the overall performance of the system.
  • the UE determines that the UE is in a radio resource control suspended state, and is about to leave the coverage of the base station currently serving the UE;
  • the UE sends a notification to the base station to instruct the base station to release the context of the UE.
  • the source base station can obtain a notification for instructing the base station to release the context of the UE, thereby releasing the UE context of the UE, and improving the system. Overall performance.
  • the notification is a physical layer notification or a high layer notification.
  • the notification when the notification is a physical layer notification, the notification carries a random access code that is pre-configured by the base station to the UE to notify the base station that the UE is about to leave the coverage of the base station.
  • the random access code is configured by the base station to the UE before the UE enters a suspended state, or is pre-defined in a protocol.
  • the notification further carries an identifier of the UE.
  • the notification when the notification is a high layer notification, the notification carries indication information that the UE is about to leave the coverage of the base station.
  • the indication information is obtained from the base station by broadcast or dedicated signaling before the UE enters the suspended state, or is pre-defined in the protocol.
  • the method further comprises:
  • the method further comprises:
  • the UE When the coverage of the UE leaving the base station fails, the UE returns to an idle state; or,
  • the UE When the coverage of the UE leaving the base station fails, if the UE returns to the coverage of the base station, the UE sends a notification to the base station to return to the coverage of the base station.
  • the context of the UE is released.
  • the mobility management entity MME determines that the UE needs to be paged
  • the MME pages the UE within a range of base stations in which the context of the UE is stored.
  • the paging method is adopted, so that the MME does not need to page the UE in the entire tracking area, and only the paging of the UE is performed within the range of the base station in which the context of the UE is stored, thereby reducing the paging range and improving the searching. Calling efficiency and saving resources.
  • a determining unit configured to determine that the UE is in a suspended state, and is about to leave a coverage of a base station currently serving the UE;
  • a notification unit configured to send, to the base station, a notification for instructing the base station to release a context of the UE.
  • a receiving unit configured to receive a notification sent by the UE to indicate that the UE is released from the context
  • a releasing unit configured to release a context of the UE according to the notification.
  • a first unit configured to determine that a UE needs to be paged
  • a second unit configured to page the UE within a range of base stations in which the context of the UE is stored.
  • the device for releasing UE context provided by another embodiment of the present application includes: a processor, a memory, a transceiver, and a bus interface;
  • the processor is configured to read a program in the memory and perform the following process:
  • a paging apparatus provided by another embodiment of the present application includes: a processor, a memory, a transceiver, and a bus interface;
  • the processor is configured to read a program in the memory and perform the following process:
  • the UE is paged within the range of base stations in which the context of the UE is stored.
  • FIG. 1 is a schematic flowchart of a method for releasing a UE context according to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a method for releasing a UE context according to an embodiment of the present disclosure
  • FIG. 3 is a schematic flowchart of a paging method according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a device for releasing a UE context according to an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of an apparatus for releasing a UE context according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a paging apparatus according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of an apparatus for releasing a UE context according to another embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a paging apparatus according to another embodiment of the present application.
  • An embodiment of the present application provides a method and device for releasing a UE context and a control thereof, and a paging method and apparatus, for enabling a source base station to release a UE when a UE in a suspended state is about to leave the source base station Context, improve the overall performance of the system.
  • the technical solution provided by the embodiment of the present application for a UE in a suspended state, is notified by an explicit or implicit manner when the UE is about to leave the current base station coverage (for example, a cell reselection is about to occur).
  • the base station After receiving the notification, the base station releases the UE context information (UE context).
  • a method for controlling a UE context for releasing a user equipment includes:
  • the UE determines that the UE is in a radio resource control suspended state, and is about to leave a coverage range of a base station currently serving the UE.
  • the UE sends a notification to the base station to instruct the base station to release a context of the UE.
  • the notification is a physical layer notification or a high layer notification.
  • Method 1 Physical layer notification.
  • the UE in the suspended state determines that the current base station coverage is about to leave (for example, the cell reselection is about to occur);
  • the UE sends a physical layer signal to the current eNB, including a random access code (preamble), and further includes a UE ID, which is pre-configured by the network to notify the UE to leave the current base station coverage (for example, The cell reselection is about to occur, and the UE ID is an ID that uniquely identifies the UE within the cell range;
  • the eNB After receiving the preamble and the UE ID, the eNB considers that the UE is about to leave the base station (for example, a cell reselection is about to occur), and the eNB deletes the UE context information (UE context) of the UE.
  • the UE context UE context information
  • the pre-configured preamble mode of the network may be configured to notify the available preamble resource that is about to leave the coverage of the current base station in the protocol, or configure the preamble resource to the UE before the UE enters the suspended state; the UE ID may be used for the UE configuration recovery. Resume ID.
  • the base station may also configure a specific preamble for the UE before the UE enters the suspended state, where the preamble is in one-to-one correspondence with the UE ID (such as the Resume ID), so that the UE only needs to send the preamble without sending the UE ID.
  • the base station side stores the corresponding relationship between the preamble and the UE ID, and the preamble sent by the UE can find the corresponding UE ID.
  • the UE may also notify the current eNB of the target cell identifier (for example, the Cell ID) to be relocated after the cell is reselected, and the eNB may send the context information of the UE to the target eNB, that is, the eNB to which the target cell belongs. From Therefore, the target eNB can acquire the context of the UE without re-establishing the context of the UE.
  • the target cell identifier for example, the Cell ID
  • the MME may page the UE only within the range of the base station in which the UE context information is stored.
  • the coverage of the upcoming cell reselection in the embodiment of the present application, or the coverage of the base station that is currently serving the UE, refers to the time when the UE completes the cell reselection evaluation and is about to access the target cell. For example, the moment when the downlink synchronization with the target cell is initiated is initiated.
  • the UE rolls back from the suspended state to the idle state, and subsequently performs the execution process in the traditional idle state.
  • the cell reselection fails, if the UE returns to the source base station coverage, the source base station UE is notified to return to the source base station coverage, that is, the source base station is receiving.
  • the UE sends a notification for instructing the base station to release the context of the UE, the UE context is maintained, and the base station starts a timer, and the UE is still under the coverage of the current base station before the timer expires.
  • the notification is sent, the UE context is maintained. If the timer expires and the UE is still not notified of the coverage of the current base station, the base station deletes the UE context of the UE.
  • the UE in the suspended state determines that the current base station coverage is about to leave, for example, the cell reselection is about to occur;
  • the UE sends an uplink message to the source eNB, where the message includes a UE ID and indicator information that leaves the current base station coverage;
  • the eNB After receiving the uplink message, the eNB considers that the UE is about to leave the base station. For example, the cell reselection is about to occur, and the eNB may delete the UE context saved by the UE at the eNB.
  • the uplink message may be a MAC Control Element (CE) or an RRC message.
  • CE MAC Control Element
  • RRC Radio Resource Control
  • the indication information of the coverage of the current base station is notified by the base station to the UE by means of broadcast or dedicated signaling before the UE enters the suspended state; or the indication information pre-defined in the protocol.
  • the UE may also notify the current eNB, the target cell identifier to be camped on after the cell is reselected, for example, the Cell ID of the target cell, and the eNB may send the context information of the UE to the target eNB, that is, the target cell belongs to eNB.
  • the MME may page the UE only within the range of the base station in which the UE context information is stored.
  • the coverage of the upcoming cell reselection in the embodiment of the present application, or the coverage of the base station that is currently serving the UE, refers to the time when the UE completes the cell reselection evaluation and is about to access the target cell. For example, the moment when the downlink synchronization with the target cell is initiated is initiated.
  • the UE rolls back from the suspended state to the idle state, and subsequently performs the execution process in the traditional idle state.
  • the cell reselection fails, if the UE returns to the source base station coverage, the source base station UE is notified to return to the source base station coverage, that is, the source base station is receiving.
  • the UE sends a notification for instructing the base station to release the context of the UE, the UE context is maintained, and the base station starts a timer, and the UE is still under the coverage of the current base station before the timer expires.
  • the notification is sent, the UE context is maintained. If the timer expires and the UE is still not notified of the coverage of the current base station, the base station deletes the UE context of the UE.
  • a method for releasing the UE context includes:
  • S201 Receive a notification sent by the UE to indicate that the UE is released.
  • a paging method provided by an embodiment of the present application includes:
  • the MME determines that the UE needs to be paged.
  • the MME pages the UE within a range of base stations in which the context of the UE is stored.
  • Embodiment 1 Physical layer notification
  • the UE enters the connection state and performs data communication with the network. Thereafter, because the UE traffic is small, the network decides to configure the UE to the suspended state.
  • the network configures a set of preamble resources for the UE before the UE enters the suspended state.
  • the set of preamble resources is used to indicate that the UE is about to leave the current base station coverage.
  • the UE in the suspended state determines that the current base station coverage is about to leave (for example, the cell reselection is about to occur), selects a preamble that is configured before the current eNB to notify the leaving of the coverage, and then sends the preamble to the current eNB.
  • the Resume ID of the UE is used to indicate that the UE is about to leave the current base station coverage.
  • the eNB After receiving the preamble and the Resume ID, the eNB considers that the UE is about to leave the base station (for example, a cell reselection is about to occur), and the eNB deletes the UE context information (UE context) of the UE.
  • the UE context information UE context
  • the UE may also notify the current eNB, after receiving the preamble and the Resume ID, the target cell identifier (eg, Cell ID) to be camped on after the cell is reselected, and the eNB may send the context information of the UE to the target.
  • the target cell identifier eg, Cell ID
  • the eNB may send the context information of the UE to the target.
  • eNB eNB to which the target cell belongs).
  • the UE When the UE fails to leave the current base station coverage (for example, the cell reselection fails), the UE rolls back from the suspended state to the idle state, and subsequently performs the execution process in the traditional idle state.
  • immediate cell reselection refers to the time when the UE completes the cell reselection evaluation and is about to access the target cell. (For example, start to initiate downlink synchronization with the target cell).
  • Embodiment 2 High-level notification.
  • the UE enters the connection state and performs data communication with the network. Thereafter, because the UE traffic is small, the network decides to configure the UE to the suspended state.
  • the UE in the suspended state determines that the current base station coverage is about to leave (for example, the cell reselection is about to occur); the UE sends an uplink RRC message to the source eNB, where the message includes the UE ID and an indication to leave the current base station coverage.
  • the eNB considers that the UE is about to leave the base station (for example, a cell reselection is about to occur), and the eNB deletes the UE context information (UE context) of the UE.
  • UE context UE context information
  • the UE may also carry the target cell identifier (eg, Cell ID) to be camped on after the cell reselection in the RRC message, and the eNB may send the context information of the UE to the target eNB (the target cell belongs to eNB).
  • the target cell identifier eg, Cell ID
  • the eNB may send the context information of the UE to the target eNB (the target cell belongs to eNB).
  • the UE fails to leave the current base station coverage (for example, the cell reselection fails)
  • the source base station is notified by the RRC message, and the source base station continues to maintain the UE context at this time (when the UE notifies, The base station starts a timer.
  • the UE receives the notification of the current base station before the timer expires, the UE keeps the UE context. If the timer expires, the UE context is deleted.
  • immediate cell reselection refers to the time when the UE completes the cell reselection evaluation, that is, the time when the target cell is to be accessed (for example, starting to initiate downlink synchronization with the target cell).
  • a control device for releasing a UE context provided by an embodiment of the present application includes:
  • a determining unit 11 configured to determine that the UE is in a suspended state, and is about to leave a coverage area of a base station currently serving the UE;
  • the notification unit 12 is configured to send, to the base station, a notification for instructing the base station to release the context of the UE.
  • an apparatus for releasing a UE context provided by the embodiment of the present application includes:
  • the receiving unit 21 is configured to receive a notification sent by the UE to indicate that the UE is released from the context;
  • the releasing unit 22 is configured to release the context of the UE according to the notification.
  • a paging apparatus provided by an embodiment of the present application includes:
  • the first unit 31 is configured to determine that the UE needs to be paged
  • the second unit 32 is configured to page the UE within a range of base stations in which the context of the UE is stored.
  • Each of the units described above can be implemented by a physical device such as a processor.
  • FIG. 7 is a schematic structural diagram of an apparatus for releasing a UE context according to another embodiment of the present application.
  • the apparatus can include a processor 701, a memory 702, a transceiver 703, and a bus interface.
  • the processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 can store data used by the processor 701 in performing operations.
  • the transceiver 703 is configured to receive and transmit data under the control of the processor 701.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 701 and various circuits of memory represented by memory 702.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 can store data used by the processor 701 in performing operations.
  • the flow disclosed in the embodiment of the present invention may be applied to the processor 701 or implemented by the processor 701.
  • each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 701 or an instruction in the form of software.
  • the processor 701 can be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or perform the embodiments of the present invention.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702 and completes the steps of the signal processing flow in conjunction with its hardware.
  • the processor 701 is configured to read a program in the memory 702, and perform the following process: determining that the UE is in a radio resource control suspended state, and is about to leave the coverage of the base station currently serving the UE; Sending a notification to the base station to instruct the base station to release the context of the UE.
  • FIG. 8 is a schematic structural diagram of a paging apparatus according to another embodiment of the present application. As shown, the apparatus can include a processor 801, a memory 802, a transceiver 803, and a bus interface.
  • the processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 can store data used by the processor 801 in performing operations.
  • the transceiver 803 is configured to receive and transmit data under the control of the processor 801.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 801 and various circuits of memory represented by memory 802.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 can store data used by the processor 801 in performing operations.
  • the flow disclosed in the embodiment of the present invention may be applied to the processor 801 or implemented by the processor 801.
  • the steps of the signal processing flow can be completed by the integrated logic circuit of the hardware in the processor 801 or the instruction in the form of software.
  • the processor 801 can be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or perform the embodiments of the present invention.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 802, and the processor 801 reads the information in the memory 802 in conjunction with its hardware to complete the steps of the signal processing flow.
  • the processor 801 is configured to read a program in the memory 802, and perform the following process: determining that the UE needs to be paged; paging the UE within a range of the base station storing the context of the UE.
  • the UE in the suspended state may leave the current base station coverage (for example, the cell reselection is about to occur), by explicit or implicit.
  • the way to notify the base station After receiving the notification, the base station releases the UE context information (UE context). Therefore, when the mobility of the UE in the suspended state is reduced, the signaling overhead of the data transmission is restored, and the eNB can release the UE context in time, thereby optimizing the overall performance of the network.
  • UE context information UE context
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory include instructions.
  • the instruction means implements the functions specified in a block or blocks of a flow or a flow and/or a block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention concerne un procédé de commande de libération de contexte d'équipement utilisateur (UE) et un appareil associé, ainsi qu'un procédé et un appareil de radiomessagerie, destinés à être utilisés pour permettre à une station de base source de libérer un contexte d'UE dans un cas dans lequel l'UE dans un état interrompu est sur le point de quitter la station source, permettant ainsi d'améliorer les performances globales d'un système. Le procédé de commande pour une libération de contexte d'équipement utilisateur (UE) proposé dans la présente invention comprend les opérations suivantes : un UE détermine que l'UE est dans un état interrompu de commande de ressource radio et est sur le point de quitter la couverture d'une station de base desservant actuellement l'UE; et l'UE envoie, à la station de base, une notification pour donner l'instruction à la station de base de libérer un contexte de l'UE.
PCT/CN2016/102046 2015-11-06 2016-10-13 Procédé de commande de libération de contexte d'équipement utilisateur (ue) et appareil associé, et procédé et appareil de radiomessagerie WO2017076156A1 (fr)

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CN201510751059.9A CN106686723B (zh) 2015-11-06 2015-11-06 释放ue上下文及其控制方法及装置、寻呼方法及装置
CN201510751059.9 2015-11-06

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Cited By (3)

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RU2742713C1 (ru) * 2017-08-04 2021-02-10 Гуандун Оппо Мобайл Телекоммьюникейшнс Корп., Лтд. Способ обработки данных и относящееся к нему устройство
CN114128394A (zh) * 2019-08-02 2022-03-01 华为技术有限公司 资源处理方法及装置
GB2605849A (en) * 2021-04-15 2022-10-19 Nec Corp Communication system

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