WO2017173584A1 - 传输方案的确定方法、装置和设备 - Google Patents

传输方案的确定方法、装置和设备 Download PDF

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Publication number
WO2017173584A1
WO2017173584A1 PCT/CN2016/078501 CN2016078501W WO2017173584A1 WO 2017173584 A1 WO2017173584 A1 WO 2017173584A1 CN 2016078501 W CN2016078501 W CN 2016078501W WO 2017173584 A1 WO2017173584 A1 WO 2017173584A1
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WIPO (PCT)
Prior art keywords
base station
transmission scheme
message
transmission
indication
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PCT/CN2016/078501
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English (en)
French (fr)
Inventor
李晨琬
于映辉
黄正磊
单宝堃
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201680071196.0A priority Critical patent/CN108370498B/zh
Priority to EP16897519.1A priority patent/EP3432617A4/en
Priority to PCT/CN2016/078501 priority patent/WO2017173584A1/zh
Publication of WO2017173584A1 publication Critical patent/WO2017173584A1/zh
Priority to US16/151,093 priority patent/US20190037385A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016Hand-off preparation specially adapted for end-to-end data sessions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055Physical resource allocation for ACK/NACK
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/18Management of setup rejection or failure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/27Transitions between radio resource control [RRC] states
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08Mobility data transfer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/20Selecting an access point

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a method, an apparatus, and a device for determining a transmission scheme.
  • M2M machine-to-machine communication
  • MTC Machine Type Communications
  • CP Control Plane
  • UP User plane
  • RRC Radio Resource Control
  • the capability of the UE is indicated by the more preferred network behavior; the base station sends the initial UE message to the core network device in the form of a non-access stratum (NAS) message, and the core network device selects a solution for the UE, if The selected one is that the UP scheme can be sent to the base station by using the NAS message carried in the initial context setup request, and the base station sends the NAS message to the UE through the selected scheme carried in the attach and receive information carried in the RRC connection reconfiguration message. If the core network device selects the CP solution, the selection scheme is sent to the base station by using the downlink NAS transmission, and is transparently transmitted by the base station to the UE, thereby completing the negotiation of the transmission scheme of the UE.
  • NAS non-access stratum
  • the UE if the UE enters the idle state from the connected state, due to the mobility of the UE, the UE selects other base stations when the cell is reselected, and the capabilities supported by the base station and the UE and the core network are set. If the capability of the standby negotiation is different, or the core network device is overloaded, the UE does not work normally under the base station, and there is no suitable solution for this problem.
  • An embodiment of the present invention provides a method, a device, and a device for determining a transmission scheme, which are used to solve the problem.
  • a UE enters an idle state from a connected state, the UE selects another base station when the cell is reselected due to mobility of the UE. If the capability supported by the base station is different from the capability of the UE to negotiate with the core network device, or the core network device is overloaded, the UE does not work normally under the base station.
  • a first aspect of the present invention provides a method for determining a transmission scheme, including:
  • the base station acquires a transmission scheme switching indication of the UE; the transmission scheme switching indication of the UE is used to indicate that the transmission scheme of the UE is switched from the user plane transmission to the control plane transmission or the control plane transmission is switched to the user plane transmission;
  • the base station performs, according to the transmission scheme, a configuration of a transmission scheme that is instructed to perform handover with the UE.
  • the base station is the base station to which the UE is currently connected, and the base station may generate an indication of the handover indication of the transmission scheme of the UE, or may be an indication sent by the receiving core network device, or may be switched according to the transmission scheme actively triggered by the UE.
  • the above instructions are generated, and no specific restrictions are imposed on this.
  • the base station obtains the transmission scheme switching indication by using the state of the UE and the core network device, and performs the configuration of the transmission scheme after the handover with the UE, and does not need to re-do the UE and the core network device.
  • the attachment and tracking area are updated to implement the handover of the transmission scheme of the UE, and the UE and the base station can perform the handover of the transmission scheme to continue working under the condition that the capability does not match.
  • the base station performs a handover scheme after the handover is performed according to the transmission scheme switching indication.
  • Configuration including:
  • the base station sends a first indication to the UE, where the first indication is used to instruct the UE to suspend or release context information used by the user plane transmission;
  • the base station receives a context information suspension complete message sent by the UE.
  • the sending, by the base station, the first indication to the UE includes:
  • the base station sends a radio resource control (RRC) connection reconfiguration message to the UE; the RRC connection reconfiguration message carries the first indication;
  • RRC radio resource control
  • the base station sends an RRC connection suspension request message to the UE; the RRC connection suspension request message carries the first indication.
  • the base station acquires a transmission scheme switching indication of the UE, including:
  • the base station receives a downlink non-access stratum transmission message sent by the core network device, where the downlink NAS transport message carries a transmission scheme switching indication of the UE.
  • the foregoing solutions provide a specific implementation manner in which the transmission scheme of the UE is switched from the user plane transmission to the control plane transmission, and the user plane transmission is switched to the control plane transmission process, and the process of security establishment is not required, and only the UE needs to be performed.
  • the indication indicates that the UE suspends or releases the context information used in the user plane transmission process, so that the next time the user plane is used for transmission, the transmission can be directly performed according to the suspended information, and the context information does not need to be re-executed.
  • the base station performs the configuration of the transmission scheme after the handover with the UE according to the transmission scheme switching indication.
  • the base station receives an RRC connection reconfiguration complete message sent by the UE.
  • the base station acquires a transmission scheme switching indication of the UE, including:
  • the base station forwards the NAS message to the core network device
  • the base station receives the transmission scheme switching indication of the UE that is sent by the core network device.
  • the receiving, by the base station, the NAS message that is sent by the UE and that is sent by using the user plane includes:
  • the base station forwards the NAS message to the core network device, including:
  • the base station sends an initial UE message to the core network device; the initial UE message carries the NAS message.
  • the above solutions provide a specific implementation manner in which the transmission scheme of the UE is switched from the control plane transmission to the user plane transmission.
  • the base station needs to establish a security mode with the UE, and the base station firstly
  • the UE initiates a security mode command, so that after establishing a corresponding security mode with the UE, after the UE returns to the security mode setup complete message, the base station initiates an RRC connection reconfiguration message to the UE, and after directly completing the RRC connection reconfiguration, directly enters the user.
  • the plane transmission realizes the transmission scheme switching of the UE, and can switch the transmission mode of the UE to continue working when the capability is not matched.
  • the base station acquires a transmission scheme switching indication of the UE, including:
  • the base station If the second transmission scheme supported by the base station is different from the first transmission scheme, the base station performs a transmission scheme switching indication to the UE.
  • the receiving, by the base station, the first transmission scheme that is negotiated by the UE and negotiated with the core network by the UE including:
  • the UE indicates, in the RRC connection request message, the transmission scheme negotiated by the UE with the core network device, and when the base station finds that it does not match the transmission scheme supported by the UE, the RRC connection completion message may indicate to the UE that the transmission scheme is performed. Switch. Then, in the initial UE message, the UE transmits a transmission scheme switching indication of the UE to the core network device.
  • the base station may also notify the UE to perform handover by using another signaling, and The network device is determined.
  • the base station acquires a transmission scheme switching indication of the UE, including:
  • the base station If the overload indication indicates that the control plane of the core network device is overloaded, the base station generates the transmission scheme switching indication of the UE, and the transmission scheme switching indication indicates that the transmission scheme of the UE is transmitted by the control plane. Switch to user plane transmission.
  • the core network device may send an overload indication caused by the control plane transmission scheme to the base station, and the base station may, according to the overload indication information, when the base station carries the indication that the control plane transmission scheme is used in the RRC connection request message sent by the UE.
  • the RRC connection completion message carries the transmission scheme handover indication, instructing the UE to switch to the user plane transmission scheme, so that the UE can continue to work by switching the transmission scheme in case of overload.
  • a second aspect of the present invention provides a method for determining a transmission scheme, which is a UE-side solution corresponding to the first aspect, and specifically includes:
  • the UE obtains a transmission scheme switching indication, where the transmission scheme switching indication is used to indicate that the transmission scheme of the UE is switched from user plane transmission to control plane transmission or control plane transmission to user plane transmission;
  • the UE switches the configuration of the transmission scheme after the handover with the base station according to the transmission scheme.
  • the UE performs the configuration of the transmission scheme after the handover with the base station according to the transmission scheme switching indication, include:
  • the UE Receiving, by the UE, a first indication sent by the base station; the first indication is used to indicate the UE Suspend or release context information used by user plane transport;
  • the UE suspends or releases the context information used by the user plane transmission
  • the UE sends a context information suspension complete message to the base station.
  • the receiving, by the UE, the first indication sent by the base station includes:
  • the UE receives an RRC connection reconfiguration message sent by the base station; the RRC connection reconfiguration message carries the first indication.
  • the UE performs the configuration of the transmission scheme after the handover with the base station according to the transmission scheme switching indication, include:
  • the UE establishes a security mode and sends a security mode complete message to the base station;
  • the UE Receiving, by the UE, an RRC connection reconfiguration message sent by the base station; the RRC connection reconfiguration message carrying information indicating that the control plane transmission is stopped;
  • the UE performs an RRC connection configuration and sends an RRC Connection Reconfiguration Complete message to the base station.
  • the acquiring, by the UE, the transmission scheme switching indication includes:
  • the UE receives an RRC connection reject message sent by the base station, and generates the transmission scheme switching indication according to the RRC connection reject message.
  • the UE receives an RRC connection release message sent by the base station, and generates the transmission scheme switching indication according to the RRC connection release message.
  • a third aspect of the present invention provides a method for determining a transmission scheme, which is applied to a core network device side, and includes:
  • the core network device sends a first message to the base station; the first message is used to enable the base station to determine a transmission scheme handover indication of the UE; and the transmission scheme handover indication is used to indicate that the transmission scheme of the UE is switched from user plane transmission to Control plane transmission;
  • the core network device receives a transmission plan handover complete message of the UE returned by the base station.
  • the core network device sends the first message to the base station, including:
  • the core network device Sending, by the core network device, an initial context setup request message to the base station; the first message is the initial context setup request message;
  • the core network device sends a downlink NAS transmission message to the base station, where the first message is the downlink NAS transmission message, and the downlink NAS transmission message carries a transmission scheme switching indication of the UE.
  • the method before the sending, by the core network device, the first message to the base station, the method further includes:
  • the core network device receives an initial UE message sent by the base station;
  • the initial UE message includes a BSR, a DVI of the UE, or a transmission scheme switching indication of the UE;
  • the core network device receives an uplink NAS transmission message sent by the base station; the uplink NAS transmission message includes a BSR, a DVI of the UE, or a transmission scheme switching indication of the UE.
  • the first information further includes an overload indication, where the overload indication is used to indicate that the core network device control plane transmits an overload.
  • a fourth aspect of the present invention provides a method for determining a transmission scheme, which is applied to a first base station side to which a UE is currently connected, and specifically includes:
  • the first base station sends a handover request message to the second base station;
  • the handover request message includes a transmission scheme used by the UE;
  • the first base station receives a handover confirmation message or a handover rejection message returned by the second base station.
  • a fifth aspect of the present invention provides a method for determining a transmission scheme, which is applied to a target base station side that is selected by the first base station for the UE to be switched to the UE, that is, the second base station, and the specific solution includes:
  • the second base station receives the handover request message sent by the first base station;
  • the handover request message includes a transmission scheme currently used by the UE; and the first base station is a base station currently used by the UE;
  • the second base station determines to allow the UE to access, returning a handover confirmation message to the first base station; otherwise, returning a handover rejection message to the first base station.
  • the handover request message further includes transmission capability information of the UE, and the transmission capability information of the UE is used to indicate a transmission scheme supported by the UE.
  • the second base station determines, according to the handover request message, whether to allow the UE to access, including:
  • the UE is allowed to access; otherwise, the UE is not allowed to access.
  • the second base station determines, according to the handover request message, whether to allow the UE to access, and further includes:
  • the handover confirm message further includes a handover indication indicating that the UE switches to a transmission scheme supported by the second base station.
  • the first base station determines to perform the handover operation, and the first base station
  • the second base station (target base station) base station sends a handover request, and the CP/UP scheme to be used in the handover request is indicated.
  • the capability supported by the UE may be indicated, for example, only CP, or UP or both are supported. And what are more inclined to support.
  • These two kinds of information can be placed in the uplink and downlink information of the UE, or can be stored as a separate IE.
  • the acknowledgment indication may be performed in the handover confirm message, and then the first base station receives the handover request acknowledgement message,
  • the UE sends the RRC reconfiguration information, and the scheme for its use can be indicated in the information.
  • the second base station may indicate, by using a handover acknowledgement message sent to the first base station, a scheme that the UE should use, that is, instruct the UE to perform After the transmission of the transmission scheme, the first base station sends the RRC connection reconfiguration message to the UE after receiving the message. After receiving the message, the UE sends the RRC connection reconfiguration to the second base station to complete the handover of the transmission scheme.
  • a fifth aspect of the present invention provides a method for determining a transmission scheme, which is applied to a base station side.
  • the base station Before a UE establishes a connection with a base station, the base station broadcasts a broadcast message to notify all UEs of the transmission scheme supported by the base station, for example, supporting control plane transmission or Only the ability to transfer user planes is supported.
  • the UE performs cell reselection, when the broadcast message of the cell is read, the base station of the cell and its own are determined.
  • the transmission schemes do not match, the access of the transmission scheme is not directly performed, and other cell access or renegotiation is sought, or the UE directly performs handover of the transmission scheme.
  • the sixth aspect of the present invention provides a method for determining a transmission scheme.
  • the core network device may increase the overload cause on the basis of the existing signaling, and notify the base station of the overload indication to increase the overload caused by the control plane transmission. Due to the transmission overload of the control plane, the base station may indicate whether the core network device is overloaded in the broadcast message, so that the UE directly switches the transmission scheme or searches for other cells to camp when establishing a connection, or re-negotiates.
  • the UE performs access control by using the broadcast message of the base station carrying the overload indication to avoid the connection of the core network device after the access is refused, which is simple and efficient.
  • a seventh aspect of the present invention provides a method for determining a transmission scheme.
  • the core network device is still in an overload condition caused by using a control plane transmission.
  • an overload indication is sent to the base station, and the UE sends an RRC carrying the control plane transmission.
  • the connection establishment request message may be directly rejected according to the overload indication of the core network device when the base station receives the RRC connection setup request message sent by the UE, and may carry the rejection reason and/or the indication message through the RRC connection rejection message, and / or redirect message instructing the UE to reconnect to other base stations.
  • the indication message may indicate that the UE performs the handover of the transmission scheme, and may also instruct the UE to perform the avoidance. The UE performs backoff according to the relevant parameters therein, and reduces the load of the core network device.
  • An eighth aspect of the present invention provides a method for determining a transmission scheme, where a core network device sends an overload indication to a base station that causes an overload of a control plane, and after the UE sends an RRC connection request message using a control plane transmission scheme to the base station, the base station according to the overload And indicating, by the RRC connection setup message, the transmission scheme switching indication, indicating that the UE switches to the user plane transmission scheme, and notifying the core network device by using the initial UE message. If the UE does not support user plane transmission, the connection is released. The base station notifies the UE to perform the transmission scheme switching according to the overload condition of the core network device, and reduces the load of the core network device.
  • a ninth aspect of the present invention provides a method for determining a transmission scheme.
  • the UE in the connected state may trigger an S1 release process, and notify the UE to perform the tracking area by using an RRC connection recovery message.
  • the update enables the base station to select other core network devices when selecting the core network device to implement load balancing between the core network devices.
  • a tenth aspect of the present invention provides a method for determining a transmission scheme, in which a base station selects a new core network device for a UE according to an indication of a core network device, and specifically, may interact between core network devices, and select one.
  • the core network device that also supports the control plane transmission scheme is sent to the base station, Perform rerouting to reduce the load on the original core network device.
  • An eleventh aspect of the present invention provides a determining apparatus for a transmission scheme, including:
  • a receiving module for receiving a message, a transmitting module for transmitting a message, and a processing module for controlling execution of the program instruction
  • the receiving module is configured to acquire a transmission scheme switching indication of the UE, where the transmission scheme switching indication of the UE is used to indicate that the transmission scheme of the UE is switched from user plane transmission to control plane transmission or control plane transmission to user plane transmission;
  • the processing module is configured to switch, according to the transmission scheme, a configuration of a transmission scheme after the handover with the UE.
  • the determining device of the transmission scheme may be implemented by software or implemented in combination with a hardware device, the receiving module may be implemented as a receiver, the sending module may be embodied as a transmitter, and the processing module may be implemented as a processor for executing The technical solution of the base station in any of the above solutions.
  • a twelfth aspect of the present invention provides a device for determining a transmission scheme, including:
  • a receiving module for receiving a message, a transmitting module for transmitting a message, and a processing module for controlling execution of the program instruction
  • the receiving module is configured to acquire a transmission scheme switching indication; the transmission scheme switching indication is used to indicate that the transmission scheme of the determining apparatus of the transmission scheme is switched from a user plane transmission to a control plane transmission or a control plane transmission to a user plane transmission;
  • the processing module is configured to switch, according to the transmission scheme, a configuration of a transmission scheme after the handover with the base station.
  • the determining device of the transmission scheme may be implemented by software or implemented in combination with a hardware device, the receiving module may be implemented as a receiver, the sending module may be embodied as a transmitter, and the processing module may be implemented as a processor for executing The technical solution of the user equipment in any of the above solutions.
  • a thirteenth aspect of the present invention provides a device for determining a transmission scheme, including:
  • a receiving module for receiving a message, a transmitting module for transmitting a message, and a processing module for controlling execution of the program instruction
  • the sending module is configured to send a first message to the base station, where the first message is used to enable the base station to determine a transmission scheme switching indication of the UE, and the transmission scheme switching indication is used to indicate that the UE Transfer to control plane transmission;
  • the receiving module is configured to receive a transmission plan handover complete message of the UE returned by the base station.
  • the determining device of the transmission scheme may be implemented by software or implemented in combination with a hardware device, the receiving module may be implemented as a receiver, the sending module may be embodied as a transmitter, and the processing module may be implemented as a processor for executing The technical solution of the core network device in any of the above solutions.
  • a fourteenth aspect of the present invention provides a base station, comprising: a memory storing program instructions, a processor for controlling execution of program instructions, a receiver for receiving a message, and a transmitter for transmitting a message;
  • the processor is used to:
  • Obtaining a transmission scheme switching indication of the UE where the transmission scheme switching indication of the UE is used to indicate that the transmission scheme of the UE is switched from a user plane transmission to a control plane transmission or a control plane transmission handover to a user plane transmission;
  • a fifteenth aspect of the present invention provides a UE, including: a memory storing program instructions, a processor for controlling execution of program instructions, a receiver for receiving a message, and a transmitter for transmitting a message;
  • the processor is used to:
  • Obtaining a transmission scheme switching indication where the transmission scheme switching indication is used to indicate that the UE's transmission scheme is switched from user plane transmission to control plane transmission or control plane transmission to user plane transmission;
  • a sixteenth aspect of the present invention provides a core network device, including: a memory storing program instructions, a processor for controlling execution of program instructions, a receiver for receiving a message, and a transmitter for transmitting a message;
  • the transmitter is configured to send a first message to a base station, where the first message is used to enable the base station to determine a transmission scheme handover indication of the UE, and the transmission scheme handover indication is used to indicate that the transmission scheme of the UE is transmitted by a user plane Switch to control plane transmission;
  • the receiver is configured to receive a transmission scheme handover complete message of the UE returned by the base station.
  • the base station obtains the transmission scheme switching indication by using the state of the UE and the core network device, and performs the configuration of the transmission scheme after the handover with the UE, without the UE and the core
  • the network device re-attaches and tracks the area update, and implements the handover of the transmission scheme of the UE, ensuring that the UE and the base station can perform the handover of the transmission scheme to continue working under the condition that the capability is not matched.
  • FIG. 1 is a schematic diagram of an application scenario of a method for determining a transmission scheme according to the present invention
  • Embodiment 1 is a flowchart of Embodiment 1 of a method for determining a transmission scheme according to the present invention
  • Embodiment 3 is a flowchart of Embodiment 2 of a method for determining a transmission scheme according to the present invention
  • Embodiment 4 is a flowchart of Embodiment 3 of a method for determining a transmission scheme according to the present invention
  • FIG. 5 is a schematic diagram of interaction of an example 1 of a method for determining a transmission scheme according to the present invention
  • FIG. 6 is a schematic diagram of interaction of an example 2 of a method for determining a transmission scheme according to the present invention
  • Embodiment 7 is a flowchart of Embodiment 4 of a method for determining a transmission scheme according to the present invention.
  • FIG. 8 is a schematic diagram of interaction of an example 3 of a method for determining a transmission scheme according to the present invention.
  • FIG. 9 is a schematic diagram of interaction of an example 6 of a method for determining a transmission scheme according to the present invention.
  • FIG. 10 is a schematic structural diagram of Embodiment 1 of a determining apparatus for a transmission scheme according to the present invention.
  • Embodiment 11 is a schematic structural diagram of Embodiment 2 of a determining apparatus for a transmission scheme according to the present invention.
  • FIG. 12 is a schematic structural diagram of Embodiment 3 of a determining apparatus for a transmission scheme according to the present invention.
  • FIG. 1 is a schematic diagram of an application scenario of a method for determining a transmission scheme according to the present invention.
  • the solution of the present invention can be applied to a wireless communication system with large coverage and multiple connections, as shown in FIG. 2, which is mainly used in a system supporting M2M communication, and relates to
  • the network element includes a User Equipment (UE), a base station, and a core network device.
  • UE User Equipment
  • the UE here refers to support M2M, enhanced machine type communication (enhanced machine) Type communication, EMTC), narrowband IoT, Long Term Evolution (LTE), and other communication type terminal devices.
  • the base station is used to connect the UE and the core network device, and may be an evolved base station, a base station, an Internet of Things base station, or the like.
  • the core network device may include: a service gateway node (CIoT Serving Gateway Node, C-SGN), a mobility management entity (Mobility Management Entity (MME), a service gateway (Serving GateWay, S-GW), and a PDN gateway (PDN GateWay, P). -GW) and so on.
  • C-SGN service gateway node
  • MME Mobility Management Entity
  • S-GW service gateway
  • PDN gateway PDN gateway
  • the UE may select other base stations during cell reselection due to mobility, and the capabilities supported by the selected base station are negotiated with the UE and the core network device. If the packets are inconsistent, they cannot work normally. For example, the UE and the MME negotiate to use the UP scheme, and the UE selects a cell under the base station that only supports the CP capability to camp in the idle state.
  • the MME when the MME is overloaded by using the CP scheme, it is necessary to prohibit the use of the CP scheme or switch the UE to the UP scheme.
  • the UE also needs to perform CP/UP conversion according to service requirements.
  • the present invention introduces a related scheme for the CP/UP to perform handover, and solves the problem that the UE cannot work normally when the capabilities of the UE and the base station do not match.
  • Embodiment 1 is a flowchart of Embodiment 1 of a method for determining a transmission scheme of the present invention; as shown in FIG. 2, an execution body of the scheme is a base station, and specific implementation steps of the method for determining the transmission scheme are:
  • the base station acquires a transmission scheme switching indication of the UE.
  • the transmission scheme switching indication of the UE is used to indicate that the transmission scheme of the UE is switched from user plane transmission to control plane transmission or control plane transmission to user plane transmission. That is, the transmission scheme switching indication is used to indicate the transmission mode of the UE, or the transmission scheme may be instructed to perform the determination again.
  • the transmission scheme switching indication may be determined by the base station according to the current transmission scheme of the UE and the performance of the base station itself, or may be sent by the receiving core network device (for example, the MME), or may be triggered by the UE to trigger the transmission scheme.
  • the specific method does not limit.
  • the base station performs, according to the transmission scheme, a configuration of a transmission scheme after the handover is performed with the UE.
  • the configuration process of the UE and the base station is different, if the transmission scheme switching indication indicates that the transmission scheme of the UE is switched by the user plane.
  • the specific process of the base station switching the indication of the transmission scheme after the handover with the UE according to the transmission scheme is: the base station sends a first indication to the UE; the first indication is used for Instructing the UE to suspend or release context information used by the user plane transmission; the base station receives a context information suspension completion message sent by the UE.
  • the base station may send a downlink message to the UE, and add an indication to the message, that is, the first indication is used to indicate that the UE performs the context information of the user plane transmission scheme. Suspend or release.
  • the base station receives the context information suspension completion or release completion message returned by the UE, the configuration process is completed, and the control plane transmission scheme can be directly accessed.
  • the base station may also directly send the first indication without being carried in the message.
  • the base station sends a radio resource control RRC connection reconfiguration message to the UE; the RRC connection reconfiguration message carries the first indication.
  • the base station sends an RRC connection suspension request message to the UE; the RRC connection suspension request message carries the first indication.
  • the specific manner in which the base station acquires the transmission scheme switching indication of the user equipment UE includes at least the following: In the first manner, the base station receives the core network device to send.
  • An initial context setup request message carries the transmission scheme handover indication of the UE; in a second manner, the base station receives a UE context recovery message sent by a core network device; The message carries the transmission scheme switching indication of the UE; in a third manner, the base station receives a downlink non-access stratum transmission message sent by the core network device, and the downlink non-access stratum (Non-Access Stratum, The NAS) transport message carries a transmission scheme handover indication of the UE.
  • the NAS downlink non-access stratum
  • the specific process of the base station switching the indication according to the transmission scheme and the configuration of the transmission scheme after the handover of the UE is:
  • the base station determines to transmit the transmission scheme of the UE, that is, obtains the transmission side. After the handover indication, the base station initiates a security mode command to the UE to perform security establishment. After receiving the message, the UE sends a security mode complete message to the base station to complete the security establishment, and the base station sends an RRC connection reconfiguration message to the UE again to perform SRB2. During the establishment process of the DRB, the UE sends an RRC connection reconfiguration complete message to the base station, completes the configuration process of the transmission scheme switching, and performs a user plane transmission scheme.
  • the specific manner of the base station acquiring the transmission scheme switching indication of the UE by the control plane switching scheme to the user plane transmission scheme is: the base station receives the NAS message sent by the UE indicating that the user plane is transmitted; the base station will The NAS message is forwarded to the core network device; the base station receives the transmission scheme switching indication of the UE sent by the core network device.
  • the eNB receives the RRC connection setup complete message sent by the UE, and the RRC connection setup complete message carries the NAS message; the base station forwards the NAS message to the core network device.
  • the specific manner is: the base station sends an initial UE message to the core network device; the initial UE message carries the NAS message.
  • the base station obtains the transmission scheme switching indication by using the state of the UE and the core network device, and configures the transmission scheme after the handover with the UE, and does not need to re-establish the UE and the core network device.
  • Performing the attachment and tracking area update to implement the handover of the transmission scheme of the UE ensuring that the UE and the base station can continue the operation of the handover of the transmission scheme if the capability is not matched, and can send an indication through the NAS message, which can reduce the signaling. Overhead.
  • FIG. 3 is a flowchart of Embodiment 2 of a method for determining a transmission scheme of the present invention. As shown in FIG. 3, an execution entity of the scheme is a base station, and specific implementation steps of the method for determining the transmission scheme are:
  • S201 The UE acquires a transmission scheme switching indication.
  • the transmission scheme switching indication is used to indicate that the transmission scheme of the UE is switched from user plane transmission to control plane transmission or control plane transmission to user plane transmission
  • the acquisition transmission scheme switching indication includes at least the following implementations. the way:
  • the UE receives the transmission scheme switching indication sent by the base station.
  • the UE sends an RRC connection setup request message to the base station; the UE receives an RRC connection reject message sent by the base station, and generates the transmission scheme switching indication according to the RRC connection reject message.
  • the UE sends an RRC connection setup complete message to the base station; the UE receives an RRC connection release message sent by the base station, and is released according to the RRC connection. a message, generating the transmission scheme switching indication.
  • S202 The UE switches the configuration of the transmission scheme after the handover with the base station according to the transmission scheme.
  • the UE may receive the transmission scheme switching indication sent by the base station, or obtain the transmission scheme switching indication according to the overload information of the core network device in the received broadcast information, and after the UE determines that the transmission scheme is required to be switched, different The switching direction is handled differently. specific:
  • the transmission scheme switching indication indicates that the transmission scheme of the UE is switched from the user plane transmission to the control plane transmission
  • the configuration of the transmission scheme after the UE performs the handover according to the transmission scheme switching indication and the base station is specifically implemented as:
  • the UE receives the first indication sent by the base station; the first indication is used to indicate that the UE suspends or releases the context information used by the user plane transmission; the UE suspends or releases the context information used by the user plane transmission.
  • the UE sends a context information suspension complete message or a release complete message to the base station.
  • the first indication may also be carried by other messages, and the specific limitation is not limited thereto.
  • the receiving the first indication by the UE may be implemented by receiving an RRC connection reconfiguration message sent by the base station, where the RRC connection reconfiguration message carries the first indication.
  • the transmission scheme switching indication indicates that the transmission scheme of the UE is switched from the control plane transmission to the user plane transmission
  • the configuration of the transmission scheme after the UE performs handover according to the transmission scheme switching indication may be specifically implemented. for:
  • a security mode command message sent by the base station Receiving, by the UE, a security mode command message sent by the base station; the UE establishing a security mode, and sending a security mode complete message to the base station; the UE receiving an RRC connection reconfiguration message sent by the base station; The connection reconfiguration message carries information indicating that the control plane transmission is stopped; the UE performs an RRC connection configuration and transmits an RRC connection reconfiguration complete message to the base station.
  • the UE obtains the transmission scheme switching indication by using the base station or other information received, and performs the configuration of the switched transmission scheme with the base station, and does not require the UE and the core network device to reattach.
  • the tracking area is updated to implement the handover of the transmission scheme of the UE, and the UE and the base station can perform the handover of the transmission scheme to continue the operation if the capability is not matched, and the indication can be sent through the NAS message, and the signaling overhead can be reduced.
  • Embodiment 4 is a flowchart of Embodiment 3 of a method for determining a transmission scheme according to the present invention. As shown in FIG. 4, The execution entity of the solution is a core network device, and the specific implementation steps of the determining method of the transmission scheme are:
  • S301 The core network device sends a first message to the base station.
  • the first message is used to enable the base station to determine a transmission scheme handover indication of the UE, and the transmission scheme handover indication is used to indicate that the transmission scheme of the UE is switched from user plane transmission to control plane transmission.
  • the UE may directly send an indication to the base station to instruct the UE to switch the transmission scheme, or may send the overload information or other information to the base station, so that the base station determines the transmission scheme switching indication of the UE, and specifically sends the first
  • the message can specifically include the following situations:
  • the first mode the core network device sends an initial context setup request message to the base station.
  • the first message is the initial context setup request message; after receiving the initial context setup request message, because the user plane transmission does not require the establishment of the initial context, the base station may determine that the core network device indicates to use the control plane transmission scheme. If the UE is originally using control plane transmission, no handover is required; if the user plane transmission is used by the user, the base station generates a handover indication, instructing the user to switch to control plane transmission.
  • the core network device sends a downlink non-access stratum NAS transmission message to the base station. That is, the first message is the downlink NAS transmission message; the downlink NAS transmission message carries the transmission scheme switching indication of the UE.
  • the first information further includes an overload indication, where the overload indication is used to indicate that the core network device control plane transmits an overload.
  • the base station is configured to instruct the UE to switch to the user plane transmission according to the overload indication, and generate a corresponding transmission scheme switching indication.
  • the core network device receives a transmission plan handover complete message of the UE returned by the base station.
  • the base station and the UE need to report to the core network when the configuration of the switched transmission scheme is completed, that is, the base station can notify the core network device by sending a transmission scheme handover completion message, and the handover has been completed.
  • the core network device receives an initial UE message sent by the base station; and the initial UE message includes a buffer status report of the UE. (Buffer Status Report, BSR), Data Volume Indication (DVI) or the transmission scheme switching indication of the UE.
  • BSR Buffer Status Report
  • DVI Data Volume Indication
  • the core network device receives an uplink NAS transmission message sent by the base station, where the uplink NAS transmission message includes the UE BSR, DVI or transmission scheme switching indication of the UE.
  • the base station can indicate the transmission scheme of the UE to the core network device through the BSR and or the DVI.
  • the core network device sends the handover indication or the overload information or the context establishment request message to the base station to notify the base station that the transmission scheme of the UE needs to be switched, and the base station and the UE according to the transmission scheme
  • the handover instruction completes the configuration of the transmission scheme after the handover, and implements the handover of the transmission scheme of the UE, so as to ensure that the handover between the UE and the base station can continue to work after the capability is not matched.
  • the UE, the eNB, and the MME are taken as an example to describe the handover process of the UE transmission scheme in detail:
  • FIG. 5 is an interaction diagram of an example 1 of a method for determining a transmission scheme of the present invention.
  • the UE negotiates with the MME to use the CP scheme, how to switch to the UP scheme.
  • the detailed implementation steps of the UE switching from the control plane transmission to the user plane transmission are as follows:
  • S401 The UE sends a random access request message to the base station.
  • the base station returns a random access response message to the UE.
  • the UE sends a random access request (Random Access Request) message to the base station (eNB).
  • the base station sends a random access response (Random Access Response) message to the UE.
  • S403 The UE sends an RRC connection request message to the base station.
  • the UE sends an RRC Connection Request (RRCConnection Request) message to the eNB, including an SAE-temporary mobile subscriber identity (S-TMSI).
  • RRCConnection Request RRC Connection Request
  • S-TMSI SAE-temporary mobile subscriber identity
  • the base station returns an RRC connection setup message to the UE.
  • S405 The UE sends an RRC connection setup complete message to the base station.
  • the UE After receiving the message, the UE sends an RRC Connection Setup Complete message.
  • the RRC connection setup complete message may carry a NAS message, where the data NAS PDU is included.
  • the RRC connection setup complete message may also carry a service request (SR) or an extended service request. (Extended Service Request, ESR) and add an indication to the UE to use the UP scheme, which can be expressed by using 1 bit. That is, the UE triggers switching the transmission scheme from the control plane transmission to the user plane transmission.
  • SR service request
  • ESR Extended Service Request
  • the base station sends an initial UE message to the MME.
  • the steps S406 and S405 are two different triggering modes, and the paralleling scheme can be implemented in any one of the specific implementations.
  • the eNB may send the NAS message to the MME through the Initial UE Message.
  • the initial UE message may include an indication of the amount of data sent by the base station to the MME, or the base station performs a handover scheme indication to the MME according to the BSR or DVI reported by the UE to the base station, or the UE performs the handover indication to the MME in the NAS message. .
  • the MME itself decides to switch to the UP scheme.
  • the MME returns an initial context setup request message or a downlink NAS transport message to the base station.
  • the base station supports both the CP scheme and the UP scheme, and the MME and the base station can know the capabilities supported by each other through specific signaling or operation, administration and maintenance (OAM) configurations.
  • the MME decides to use the UP scheme to send an Initial Context Setup Request to the base station or a downlink NAS transport to perform an indication according to specific indication information or other information such as load conditions.
  • the base station sends a security mode command to the UE.
  • the base station After receiving the message sent by the MME, the base station initiates a security mode command (SMC) to the UE to perform security establishment.
  • SMC security mode command
  • S409 The UE returns to the base station to complete the security mode.
  • the UE After receiving the message, the UE sends a Security Mode Complete to the base station, and the security establishment is completed.
  • the base station sends an RRC connection reconfiguration message to the UE.
  • the base station sends an RRC Connection Reconfiguration (RRC Connection Reconfiguration) message to the UE, and performs a signaling radio bearer (SRB2), a data radio bearer (DRB), and the like.
  • RRC Connection Reconfiguration RRC Connection Reconfiguration
  • SRB2 signaling radio bearer
  • DRB2 data radio bearer
  • S411 The UE returns an RRC connection reconfiguration complete message to the base station.
  • the UE sends an RRC connection reconfiguration complete to the base station (RRC Connection). Reconfiguration Complete) message.
  • RRC Connection RRC Connection
  • Reconfiguration Complete The configuration is complete and the UP scheme is entered.
  • FIG. 6 is a schematic diagram of the interaction of the second method for determining the transmission scheme of the present invention. As shown in FIG. 6 , when the UE is in the connected state, the specific implementation steps of the UE switching from the UP to the CP solution are as follows:
  • S501 The UE sends a random access request message to the base station.
  • the base station returns a random access response message to the UE.
  • the UE sends a random access request (Random Access Request) message to the base station (eNB).
  • the base station sends a random access response (Random Access Response) message to the UE.
  • S503 The UE sends an RRC connection request message to the base station.
  • the base station returns an RRC connection setup message to the UE.
  • S505 The UE sends an RRC connection setup complete message to the base station.
  • the UE sends an RRC Connection Request message to the eNB, including the S-TMSI.
  • the eNB sends an RRC Connection Setup message to the UE.
  • the UE After receiving the message, the UE sends an RRC Connection Setup Complete message to complete the RRC connection establishment.
  • S506 The base station sends an initial UE message to the MME.
  • S508 The base station sends a security mode command to the UE.
  • the base station sends an RRC connection reconfiguration message to the UE.
  • S511 The UE returns an RRC connection reconfiguration complete message to the base station.
  • the UE may send a message to the base station by using an uplink message, which may include a BSR/DVI, and may also include the information in the NAS message.
  • an uplink message which may include a BSR/DVI, and may also include the information in the NAS message.
  • the eNB may send the NAS message to the MME by using an initial UE message or an uplink uplink NAS (NAS Transport) message.
  • the message may include an indication of the amount of data sent by the base station to the MME, or the base station performs a handover scheme indication to the MME according to the BSR/DVI reported by the UE to the base station, or the UE performs a handover indication to the MME in the NAS message. Or the MME decides to switch to the CP scheme.
  • the downlink NAS transmits a message, and carries a control plane transmission indication.
  • S512 and S513 are two parallel schemes, which may be performed alternatively, S512 is a base station triggering handover, and S513 is an MME triggering handover.
  • the eNB may perform an indication to the base station by using a Downlink NAS Transport message, including the indication information.
  • the downlink data can also be directly carried in the signaling.
  • the implementation manner is: the UE sends the SR or the ESR to the base station, and adds an indication (same embodiment).
  • the indication is converted to a CP scheme, which the base station forwards to the MME.
  • the UE directly sends an uplink direct transmission message to the base station, where the NAS PDU carries an evolved packet system bearer indication (EBI), and the EBI may be a default bearer or a corresponding DRB, or Obtained by other means.
  • EBI evolved packet system bearer indication
  • the base station forwards the message to the MME through the uplink NAS transmission.
  • the MME may use the Downlink NAS Transport to indicate to the base station to use the CP solution, and the base station sends the indication message to the UE by using the downlink message direct transmission, and then the data can be sent by using the CP scheme. If there is downlink data at this time, it can be directly transmitted using the NAS, and no additional instructions can be made.
  • the base station sends an RRC connection reconfiguration message to the UE.
  • the base station may send an RRC Connection Reconfiguration (RRC Connection Reconfiguration) message to the UE, and add an indication to the message to indicate that the UP scheme such as DRB is required to be released or suspended. Information used.
  • RRC Connection Reconfiguration RRC Connection Reconfiguration
  • S515 The UE returns an RRC connection reconfiguration complete message to the base station.
  • the UE sends an RRC Connection Reconfiguration Complete message to the base station.
  • the configuration is complete. Enter the CP program.
  • the context of the UE required in the UP scheme may be Suspend at the UE.
  • the base station may also suspend the context of the UE required in the UP scheme. It is also possible to release the UP connection directly.
  • the base station may also send a Suspend signaling indication, such as an RRC Connection Suspend Request message, to the UE to suspend information such as DRB.
  • a Suspend signaling indication such as an RRC Connection Suspend Request message
  • the UE will reply to the RRC Connection Suspend complete, the suspend process is optional, and may also be released at the last connection. Signaling is suspended or released.
  • the CP solution that completes the above configuration is AS-safe.
  • the UE in the process of the UE switching the transmission scheme, the UE does not need to re-attach or track the area update process with the MME to negotiate the transmission scheme, but directly replaces the transmission scheme according to the indication and information carried in the transmission message. , solved the problem of capacity mismatch.
  • the base station of the camped cell supports only the CP capability when the UE is reselected.
  • the UE sends an RRC Connection Request message to the base station, where the RRC Connection Request message carries an UP scheme that is negotiated with the MME before the UE. Matching, sending an RRC Connection Reject message to the UE to the UE, and carrying a new rejection reason, or redirection information. That is, the base station directly rejects the connection of the UE, and returns an RRC connection reject message to the UE.
  • the base station can obtain other base station capability information through the X2 interface, and can send the cell information of the base station or the base station that supports the capability information to the UE by using a redirect message, and the information is carried by the redirect information.
  • the UE sends an RRC Connection Setup Complete (RRC Connection Setup Complete) message to the base station, and carries an UP scheme indication (UP preferred) negotiated with the MME before the UE is received in the RRC Connection Setup Complete message. It finds that it does not match its own capability, sends an RRC Connection Release to the UE to the UE, and carries a new reason for rejection, or redirect information.
  • the base station can obtain other base station capability information through the X2 interface, and can send the cell information of the base station or the base station that supports the capability information to the UE by using a redirect message, and the information is carried by the redirect information.
  • the base station directly rejects the connection of the UE, or directly indicates the base station that the UE can access through the redirect message, and avoids the problem that the capability is still not matched when the selection is again.
  • the UE is in the RRC Connection Request message indicating the previously negotiated UP scheme in the RRC Connection Request message, and the base station finds that it is not compatible with its own capability. And the UE is instructed to change the CP scheme through an RRC Connection Setup message. An indication message of the replacement scheme is then sent to the MME through the initial UE message.
  • the base station may notify the UE to perform handover by using an additional signaling, and confirm to the MME.
  • the re-attachment of the UE and the MME or the tracking area update process may be triggered to perform renegotiation.
  • the base station acquires the transmission scheme switching indication of the UE, and may also use the first transmission scheme that is sent by the UE and negotiated by the UE with the core network device; When the second transmission scheme is different from the first transmission scheme, the base station performs a transmission scheme switching indication to the UE.
  • the transmission scheme switching indication can be directly sent to the UE.
  • the specific implementation scheme of the base station receiving the first transmission scheme that is negotiated by the UE and negotiated with the core network by the UE includes:
  • an RRC connection setup request message sent by the UE receives, by the base station, an RRC connection setup request message sent by the UE; the RRC connection setup request message carrying the first transmission scheme; or the base station receiving an RRC connection setup complete message sent by the UE;
  • the completion message carries the first transmission scheme; or the base station receives an RRC connection recovery message sent by the UE; the RRC connection recovery message carries the first transmission scheme; or the base station receives the UE transmission
  • the RRC recovery complete message; the RRC recovery complete message carries the first transmission scheme.
  • the base station directly informs the UE to switch the transmission scheme, which effectively saves signaling overhead.
  • the UE may not report the CP/UP indication to the base station, and after receiving the initial UE message, the MME knows the capability of the UE to negotiate before, and when the MME finds that the selected base station does not support After this capability, the base station (initial message or downlink NAS message) is notified by the downlink S1 message, and the base station will release the connection and carry the cause value and the redirect message to trigger the UE to switch the transmission scheme or access other base stations.
  • the base station initial message or downlink NAS message
  • FIG. 7 is a flowchart of Embodiment 4 of a method for determining a transmission scheme according to the present invention. As shown in FIG. 7, in this scheme, an execution entity is a first base station to which a UE is currently connected, and a UE is determined to access other bases.
  • the interaction between the first base station and the second base station when the station is, for example, the second base station, the specific process is:
  • the first base station sends a handover request message to the second base station.
  • the handover request message when it is determined that the UE is handed over from the first base station to the second base station, the handover request message includes a transmission scheme used by the UE.
  • the second base station receives the handover request message sent by the first base station.
  • the handover request message includes a transmission scheme currently used by the user equipment UE; the first base station is a base station currently used by the UE.
  • the handover request message further includes transmission capability information of the UE, and the transmission capability information of the UE is used to indicate a transmission scheme supported by the UE.
  • the second base station determines, according to the handover request message, whether to allow the UE to access.
  • a specific implementation manner is: if the transmission scheme supported by the second base station is the same as the transmission scheme currently used by the UE, the UE is allowed to access; otherwise, the UE is not allowed to access. .
  • the transmission scheme supported by the second base station is different from the transmission scheme currently used by the UE, and the access is also allowed, in the returned handover confirmation message.
  • the carrying mode indicating that the UE supports using the second base station may be carried.
  • the handover confirmation message further includes a transmission scheme indicating that the UE switches to the second base station. Switching instructions.
  • the first base station receives a handover confirmation message or a handover rejection message returned by the second base station.
  • the specific process of the implementation manner is described in detail below by taking the UE, the source base station (corresponding to the first base station), and the target base station (corresponding to the second base station) as an example.
  • FIG. 8 is a schematic diagram of interaction of example 3 of a method for determining a transmission scheme according to the present invention, as shown in FIG.
  • the source base station sends a handover request message to the target base station.
  • the source base station when the UE communicates with the network side using the CP/UP scheme, when the source base station decides to perform the handover operation, the source base station sends a handover request to the target base station.
  • a (handover request) message indicates that the CP/UP scheme currently used by the UE is indicated in the handover request.
  • the capability supported by the UE may also be indicated, such as only supporting the CP, or UP or both, and what is more inclined to support.
  • the two types of information may be placed in the uplink and downlink information of the UE, or may be stored as a separate IE.
  • the target base station determines whether to allow the UE to access according to.
  • the target base station determines whether the transmission scheme currently used by the UE is the same as the transmission scheme supported by the UE. If the same, the UE is allowed to access, otherwise the UE is not allowed to access.
  • the target base station may indicate, by using the Handover Request Ack sent to the original base station, a scheme that the UE should use.
  • the target base station sends a handover confirmation message to the source base station.
  • the source base station sends an RRC connection reconfiguration message to the UE.
  • S705 The UE sends an RRC connection reconfiguration complete message to the target base station.
  • the target base station when the target base station grants access, if the target base station supports the scheme indicated by the source base station, an acknowledgement indication may be made in the handover acknowledgement.
  • the source base station After receiving the handover request acknowledgement message, the source base station sends the RRC reconfiguration information to the UE, and may indicate the scheme used by the source base station.
  • the UE performs connection configuration on the target base station, and then sends a connection reconfiguration complete message to the target base station.
  • the target base station may indicate, by using the Handover Request Ack sent to the original base station, a scheme that the UE should use, after the source base station receives the message.
  • the RRC connection reconfiguration message is sent to the UE by the RRC connection, and after receiving the RRC connection reconfiguration, the UE sends the RRC connection reconfiguration to the target base station.
  • the base station finds that the capability supported by the UE does not match its own, if it can fall back to the transmission scheme of other capabilities such as legacy LTE, the fallback scheme can be used. If it is not supported, the handover can be sent to the source by Handover Preparation Falure. The base station carries the cause value indicating that the capability is not supported.
  • the source base station only indicates the capability of the UE to use on the source base station, and does not indicate the capability supported by the UE, if the target base station supports the transmission scheme indicated by the source base station, if the target base station supports the transmission scheme indicated by the source base station, Confirm the indication in the switch confirmation.
  • the source base station receives the handover request acknowledgement After the message, the RRC reconfiguration information is sent to the UE, and the scheme used by the UE can be indicated in the message.
  • the handover confirmation information may be used to indicate a scheme that the UE needs to use, and after receiving, the source base station forwards the message to the UE through the reconfiguration message, if the UE supports Then, an acknowledgment indication is made in the RRC Connection Reconfiguration Complete message sent to the target base station, and the indicated scheme is used in the connection established with the target base station.
  • the RRC connection reconfiguration failure is sent to the target base station.
  • the handover rejection message returned to the source base station may carry the rejection reason.
  • the target base station may directly reject the access of the UE when the UE accesses.
  • the method for determining the transmission scheme provided in this embodiment is applied to the base station to which the UE is currently connected and the target base station to be handed over to the UE.
  • the UE itself does not have to switch the transmission scheme, and the problem of the capability mismatch can also be solved by switching the base station.
  • the present invention further provides a manner in which a base station indicates a transmission scheme by means of a broadcast, and the specific implementation process is:
  • the base station may perform an indication of the transmission scheme by broadcasting, and may specifically indicate the CP/UP capability supported by the base station, or the default CP capability support.
  • the base station may use 1 bit to indicate in the broadcast, and may be placed in the MIB, or the SIB1. , as well as other news.
  • the UE performs cell reselection, when the broadcast message of the cell is read, it is found that the UE may not perform data service access, but does not restrict signaling access, when it does not match the transmission scheme supported by the UE.
  • the UE initiates an attach or tracking area update for renegotiation of the CP solution and the UP solution.
  • the capability is supported by the renegotiated base station support; or the UE directly performs the handover of the transmission scheme, and then accesses the network for renegotiation and data transmission using the changed CP solution or the UP solution.
  • the UE can obtain the capability of the base station through the support of the transmission scheme broadcast by the base station, and prevent the situation that the normal operation cannot be performed after the access is not matched, that is, the system message is used for broadcasting.
  • the UE In addition to the above-mentioned situation due to the capability mismatch, the UE cannot access the base station after accessing the base station.
  • services such as smart meter reading are generally mainly small packet reporting services, and the amount of data is small.
  • User plane transmission scheme Using the user plane transmission scheme, the data passes through the S-GW to the P-GW, and the signaling passes through the MME. In addition to the signaling scheme passing through the MME, the data will also pass through the MME, so the MME overload situation may occur.
  • the base station acquires the transmission scheme switching indication of the user equipment UE, and may further include: the base station receiving the overload indication sent by the core network device; and if the overload indication indicates that the control plane of the core network device is overloaded, And the base station generates the transmission scheme switching indication of the UE, where the transmission scheme switching indication indicates that the transmission scheme of the UE is switched from control plane transmission to user plane transmission.
  • the specific implementation manner is: the MME sends an overload indication to the base station, where the overload indication increases the overload cause based on the existing signaling, because the MME is overloaded due to the CP scheme.
  • the base station indicates whether the MME is overloaded in the broadcast, and includes whether the MME rejects the CP scheme (except for the exception report) and whether the (CP solution with Non-exception report) function is activated.
  • the activation indication can be represented by 1 bit, placed in the MIB, or placed in SIB1, or other system messages;
  • the UE may perform two operations as needed:
  • the UE does not initiate data access and feeds back to the NAS layer the cause value. It is up to the NAS layer to decide whether to re-initiate access. Before the next time accessing the network, the UE re-checks whether the MME overload function in the system message is activated.
  • the UE (also supports UP) initiates attach or TAU for renegotiation of the CP solution and the UP solution.
  • the UE that supports both the CP and the UP can initiate the connection and carry the service request (Service Request) in the RRC Connection Setup Complete message, triggering the use of the UP scheme. Or if the context of the UP scheme is already suspended, the RRC recovery procedure is performed.
  • the UE using the CP scheme can determine whether to perform access control on the basis of the broadcast indication, avoid the connection, and refuse to connect, and quickly solve the MME overload caused by the CP scheme.
  • the resulting problem is simple and efficient, and effectively saves the power of the UE. the amount.
  • the flow of the MME transmitting the base station overload indication information is the same as the foregoing solution.
  • the base station can also be processed in the following two ways:
  • the UE performs the CP indication in the RRC connection request message, and indicates that the CP scheme is used in the RRC connection request message. If the base station rejects according to the MME overload indication, the base station may reply to the UE RRC connection reject message, where the UE carries Reason for rejection, and/or indication message and/or redirect message.
  • the rejection reason refers to the rejection due to the MME overload, and the indication information may include the time when the UE retreats using the CP scheme.
  • the UE performs the CP indication in the RRC connection setup complete message, and the base station rejects according to the MME overload indication, and the base station may reply to the UE RRC connection release message, carrying the rejection reason, or indicating the message and/or the redirect message.
  • the rejection reason refers to the rejection due to the MME overload
  • the indication information may include the time when the UE retreats using the CP scheme.
  • the possible operations are: the UE may perform backoff according to the waiting time related parameter carried in the indication message; or the UE initiates a TAU or attach change CP scheme selection, and uses the UP scheme to continue data transmission.
  • the method is applicable to UEs that also support the UP scheme.
  • the determining method of the transmission scheme provided in this embodiment adds a reject reason to the RRC connection reject message returned by the base station to the UE, and the UE can perform backoff or re-attach or track area update according to the indication information, effectively reducing the load of the MME, and avoiding The problem of not working properly after access due to overload.
  • a specific processing manner of the core network device overload is provided, and the base station determines the transmission mode of the UE by using the indication information of the transmission scheme carried in the RRC connection request sent by the UE. If the base station receives the transmission scheme overload indication information that is currently used by the UE, the base station sets the bearer transmission mode handover indication by using the RRC connection, and sends the indication to the UE, indicating that the UE switches to a different manner from the current transmission mode.
  • the MME is used as an example.
  • the RRC Connection Request sent by the UE to the base station carries an indication of using the CP scheme.
  • the base station passes the RRC Connection Setup according to the overload indication information.
  • Carry notification UE After receiving the message, the UE sends an RRC Connection Setup Complete to the base station, performs a handover completion confirmation, and sends the MME Connection message to the MME to perform a scheme replacement instruction. If the UE does not support, the base station is notified using RRC Connection Setup Complete and the release connection process is entered.
  • the UE or the MME may also send the capability information supported by the UE to the base station. Therefore, if the base station knows that the UE does not support UP, the base station may directly release the connection.
  • the UE releases the connection, other cell camping may be selected, or the appropriate core network device may be reselected according to the information acquired by the base station.
  • the processing of overloading the MME is implemented in the above manner.
  • the S1 release process may be triggered for the UE in the connected state, the triggering reason is that the CP solution is overloaded, and the UE release context command is sent to the base station, and the UE is in the UE.
  • the reason for the release of the context command is "load balancing TAU required", and the UE is notified by the RRC connection release, and the TAU is performed, so that the base station can select another MME when selecting the MME, and specifically determine the weight value of the MME by sending the MME to the base station to determine,
  • the MME's weight value can be set to 0 or a smaller probability. Or proceed with the renegotiation process.
  • the idle state UE For the idle state UE, it can be first put into the connected state by paging, and then the above process is performed.
  • the UE using the CP scheme may select another MME through the TAU or re-negotiate.
  • the load balancing between the MMEs is implemented to prevent the UE from using the CP for transmission for a long time. For other core network devices that use the UP solution, load balancing can be performed in the same manner.
  • FIG. 9 is a schematic diagram of interaction of the sixth embodiment of the method for determining a transmission scheme according to the present invention.
  • the current core network device that is, the first core network device in the figure
  • the NAS message redirection procedure is sent to the base station, and the base station selects a new core network device based on the group identifier of the core network device included in the reroute parameters in the message.
  • the core network device may interact with other core network devices to select a core network device that also supports the CP capability, that is, the second core network device in the figure, and send the specific identifier to the base station for rerouting.
  • the same method can be used for UP overload.
  • the specific implementation steps are as follows:
  • S801 NAS redirect message.
  • the base station selects the second core network device in the corresponding group according to the group identifier carried in the NAS redirect message.
  • the second core network device supports the CP transmission scheme as well as the first core network.
  • the base station sends an initial UE message or uplink data to the second reselected second core network device.
  • the MME when the MME is overloaded by using the CP scheme, the MME sends a "NAS Message Redirection Procedure" to the base station, and the base station selects a new MME based on the group identifier included in the "reroute parameters" in the message.
  • the MME may also select an MME that also supports the CP capability by interacting with other MMEs, and send the specific ID to the base station for rerouting.
  • a specific implementation manner of the method for determining a transmission scheme provided by the embodiment, the base station re-routing the new core network device according to the indication of the core network device, reducing the load of the original core network device, and the mode UE may be overloaded by the core network device. The problem caused by the transmission failure.
  • the UE performs the handover of the transmission scheme, after the handover is completed, the UE needs to report to the MME, and the UE may directly report to the MME through the uplink NAS transmission message, or may also send the initial UE message or other The uplink message is reported to the MME.
  • FIG. 10 is a schematic structural diagram of Embodiment 1 of a determining apparatus for a transmission scheme according to the present invention.
  • the determining apparatus 10 of the transmission scheme includes a receiving module 11 for receiving a message, a sending module 12 for transmitting a message, and a processing module 13 executed by the control program instruction;
  • the receiving module 11 is configured to acquire a transmission scheme switching indication of the user equipment UE, where the transmission scheme switching indication of the UE is used to indicate that the transmission scheme of the UE is switched from the user plane transmission to the control plane transmission or the control plane transmission is switched to the user.
  • the processing module 13 is configured to switch, according to the transmission scheme, a configuration of a transmission scheme after the handover with the UE.
  • the determining device of the transmission scheme provided in this embodiment is used to perform the technical solution of the base station in the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the sending module 12 is configured to send a first indication to the UE;
  • the first indication is used to instruct the UE to suspend or release context information used by the user plane transmission;
  • the receiving module 11 is further configured to receive a context information suspension completion message sent by the UE.
  • the sending module 12 is specifically configured to:
  • the RRC connection suspension request message carries the first indication.
  • the receiving module 11 is specifically configured to:
  • the initial context setup request message carrying the transmission scheme switching indication of the UE;
  • the UE context recovery message carrying the transmission scheme switching indication of the UE;
  • the core network device Receiving a downlink non-access stratum transmission message sent by the core network device, where the downlink NAS transport message carries a transmission scheme switching indication of the UE.
  • the sending module 12 is further configured to send a security mode command message to the UE;
  • the receiving module 11 is further configured to receive a security mode complete message sent by the UE;
  • the sending module 12 is further configured to send an RRC connection to the UE, where the RRC connection reconfiguration message carries information indicating that the control plane transmission is stopped;
  • the receiving module 11 is further configured to receive an RRC connection reconfiguration complete message sent by the UE.
  • the receiving module 11 is further configured to receive, by the UE, an NAS message that is sent by using a user plane.
  • the sending module 12 is further configured to forward the NAS message to the core network device.
  • the receiving module 11 is further configured to receive the transmission scheme switching indication of the UE sent by the core network device.
  • the receiving module 11 is specifically configured to:
  • the sending module 12 is further configured to send an initial UE message to the core network device, where the initial UE message carries the NAS message.
  • the receiving module 11 is further configured to receive, by the UE, a first transmission scheme that is negotiated by the UE and a core network device.
  • the sending module 12 is further configured to perform a transmission scheme switching indication to the UE.
  • the receiving module 11 is specifically configured to:
  • the RRC connection setup complete message carries the first transmission scheme
  • the RRC recovery complete message carries the first transmission scheme.
  • the receiving module 11 is further configured to receive an overload indication sent by the core network device.
  • the processing module 13 is further configured to generate the transmission scheme switching indication of the UE, where the overload indication indicates that the core network device control plane transmission is overloaded, where the transmission scheme switching indication indicates that the UE is transmitted.
  • the scheme is switched from control plane transmission to user plane transmission.
  • the determining device of the transmission scheme provided in this embodiment is used to perform the technical solution of the base station in the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of Embodiment 2 of a determining apparatus for a transmission scheme according to the present invention. As shown in FIG. 11, the determining apparatus 20 of the transmission scheme includes:
  • a receiving module 21 for receiving a message, a sending module 22 for transmitting a message, and a processing module 23 for controlling execution of the program instructions;
  • the receiving module 21 is configured to acquire a transmission scheme switching indication;
  • the transmission scheme of the determining device indicating the transmission scheme is switched from user plane transmission to control plane transmission or control plane transmission to user plane transmission;
  • the processing module 23 is configured to switch the configuration of the transmission scheme after the handover with the base station according to the transmission scheme.
  • the device for determining the transmission scheme provided in this embodiment is used to perform the technical solution of the user equipment in any of the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the receiving module 21 is further configured to receive the An indication, the first indication is used to instruct the UE to suspend or release context information used by the user plane transmission;
  • the processing module 23 is further configured to suspend or release context information used by the user plane transmission
  • the sending module 22 is configured to send a context information suspension complete message to the base station.
  • the receiving module 21 is specifically configured to receive a radio resource control RRC connection reconfiguration message sent by the base station, where the RRC connection reconfiguration message carries the first indication.
  • the receiving module 21 is further configured to receive the security mode command sent by the base station.
  • the processing module 23 is further configured to establish a security mode
  • the sending module 22 is further configured to send a security mode complete message to the base station;
  • the receiving module 21 is further configured to receive an RRC connection reconfiguration message sent by the base station; the RRC connection reconfiguration message carries information indicating that the control plane transmission is stopped;
  • the processing module 23 is further configured to perform an RRC connection configuration.
  • the sending module 22 is further configured to send an RRC connection reconfiguration complete message to the base station.
  • the receiving module 21 is further configured to receive the transmission scheme switching indication sent by the base station;
  • the sending module 22 is further configured to send an RRC connection setup request message to the base station;
  • the receiving module 21 is further configured to receive an RRC connection reject message sent by the base station, and generate the transmission scheme switching indication according to the RRC connection reject message.
  • the sending module 22 is further configured to send an RRC connection setup complete message to the base station;
  • the receiving module 21 is further configured to receive an RRC connection release message sent by the base station, and generate the transmission scheme switching indication according to the RRC connection release message.
  • the device for determining the transmission scheme provided in this embodiment is used to perform the technical solution of the user equipment in any of the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 12 is a schematic structural diagram of Embodiment 3 of a determining apparatus of a transmission scheme according to the present invention.
  • the determining apparatus 30 of the transmission scheme includes: a receiving module 31 for receiving a message, and a sending module 32 for sending a message. And a processing module 33 for controlling execution of the program instructions;
  • the sending module 32 is configured to send a first message to the base station, where the first message is used to enable the base station to determine a transmission scheme switching indication of the user equipment UE, and the transmission scheme switching indication is used to indicate a transmission scheme of the UE Switching from user plane transmission to control plane transmission;
  • the receiving module 31 is configured to receive a transmission plan handover complete message of the UE returned by the base station.
  • the sending module 32 is specifically configured to:
  • the first message is the initial context setup request message
  • a downlink non-access stratum NAS transport message where the first message is the downlink NAS transport message, and the downlink NAS transport message carries a transmission scheme handover indication of the UE.
  • the receiving module 31 is specifically configured to:
  • the initial UE message includes a buffer status report BSR of the UE, a data volume indication DVI, or a transmission scheme switching indication of the UE;
  • the uplink NAS transmission message includes a BSR, a DVI of the UE, or a transmission scheme switching indication of the UE.
  • the first information sent by the sending module 32 further includes an overload indication; the overload indication is used to indicate that the determining device control plane transmission overload of the transmission scheme is.
  • the device for determining the transmission scheme provided in this embodiment is used to perform the technical solution of the core network device in any of the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the determining apparatus of the transmission scheme shown in FIG. 10 above may be embodied as a base station, wherein the base station includes a memory storing program instructions, a processor for controlling execution of program instructions, a receiver for receiving messages, and the like.
  • the determining apparatus of the transmission scheme shown in FIG. 11 above may be embodied as a user equipment, wherein the user equipment includes a memory storing program instructions, a processor for controlling execution of program instructions, and a receiver for receiving a message. And a transmitter for transmitting a message; that is, the receiving module can be implemented as a receiver, the transmitting module can be embodied as a transmitter, and the processing module can be implemented as a processor.
  • the determining apparatus of the transmission scheme shown in FIG. 12 above may be embodied as a core network device, such as an MME, where the core network device includes a memory storing program instructions, a processor for controlling execution of program instructions, and A receiver that receives the message and a transmitter that transmits the message; that is, the receiving module can be implemented as a receiver, the transmitting module can be embodied as a transmitter, and the processing module can be implemented as a processor.
  • the core network device such as an MME
  • the core network device includes a memory storing program instructions, a processor for controlling execution of program instructions, and A receiver that receives the message and a transmitter that transmits the message; that is, the receiving module can be implemented as a receiver, the transmitting module can be embodied as a transmitter, and the processing module can be implemented as a processor.
  • the processor may be a central processing unit (English: Central Processing Unit, CPU for short), or may be other general-purpose processors, digital signal processors ( English: Digital Signal Processor (DSP), Application Specific Integrated Circuit (ASIC).
  • the general purpose processor may be a microprocessor or the processor 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 user equipment may further include a user interface, a display (eg, a touch screen, LCD, CRT, Holographic or Projector, etc.), a keyboard or a pointing device (eg, a mouse, a trackball, Touchpad or touch screen, etc.).
  • a display eg, a touch screen, LCD, CRT, Holographic or Projector, etc.
  • a keyboard or a pointing device eg, a mouse, a trackball, Touchpad or touch screen, etc.
  • the receiver and the transmitter may specifically include a transmitting circuit and a receiving circuit, respectively, and a carrier thereof to allow data transmission and reception between the user equipment and the base station or the wireless network router.
  • the transmit and receive circuits can be implemented by coupling into an antenna.
  • the memory stores the following elements, executable modules or data structures, or a subset thereof, or their extended set: an operating system, including various system programs, such as a framework layer, a core library layer, a driver. Layers, etc., used to implement various basic services and handle hardware-based tasks; optional, it can also include application modules, including various applications, such as Figure 1.
  • an operating system including various system programs, such as a framework layer, a core library layer, a driver. Layers, etc., used to implement various basic services and handle hardware-based tasks; optional, it can also include application modules, including various applications, such as Figure 1.
  • the illustrated desktop, media player (Media Player), browser (Browser), etc. are used to implement various application services.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the steps including the foregoing method embodiments are performed; and the foregoing storage medium includes: read-only memory (English: read-only memory, abbreviation: ROM), RAM, flash memory, hard disk, solid state hard disk, Magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.

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Abstract

本发明提供一种传输方案的确定方法、装置和设备,该方法包括:基站获取UE的传输方案切换指示,所述UE的传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输,所述基站根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置。基站通过UE或者核心网设备的状态获取传输方案切换指示,并与UE之间进行切换后的传输方案的配置,不需要UE与核心网设备重新进行附着和跟踪区更新,实现UE的传输方案的切换,确保UE和基站在能力不匹配的情况下可以进行传输方案的切换继续进行工作。

Description

传输方案的确定方法、装置和设备 技术领域
本发明实施例涉及通信技术,尤其涉及一种传输方案的确定方法、装置和设备。
背景技术
随着无线通信的快速发展,物联网(Internet of Thing,IoT)技术应运而生,主要涉及机器与机器之间的通信(Machine to Machine,M2M)和机器类型通信(Machine Type Communications,MTC),M2M是机器与机器之间通过无线网络互相传递信息和数据的通信方式,M2M设备多是比较小巧、电池供电的***,如智能抄表***,需要对水、电煤气等使用情况进行周期性监测并上报。MTC业务的传输数据量小、业务周期特性明显、低功耗和终端数量大。
针对IoT中的此类业务现在主要有两种传输方案,一种是控制面(Control plane,CP)传输方案,一种是用户面(User plane,UP)传输方案。用户设备(User Equipment,UE)具体使用何种方案,是通过UE在初始附着或跟踪区更新(Tracking Area Update,TAU)与核心网设备协商过程来确定的。以附着过程为例,UE首先发起随机接入过程,接入后与基站进行无线资源控制(Radio Resource Control,RRC)连接,并在UE发送给基站的RRC连接建立完成消息中携带的附着请求中通过更倾向的网络行为指出UE支持的能力;基站以非接入层(Non-access stratum,NAS)消息的形式通过初始UE消息发送给核心网设备,核心网设备为该UE选择方案后,如果选择的是UP方案可通过初始上下文建立请求携带的NAS消息发送给基站,基站通过RRC连接重配置消息中携带的附着接受信息中携带的选择的方案发送给UE。如果核心网设备选择的是CP方案,则可以通过下行NAS传输把选择方案放在NAS消息里发送给基站,并由基站透传给UE,进而完成UE的传输方案的协商。
然而,在实际应用中,如果UE从连接态进入空闲态,由于UE的移动性,UE在小区重选时选择了其他基站,且该基站所支持的能力与UE与核心网设 备协商的能力不同,或者该核心网设备已经过载等情况下,UE驻留在该基站下并不能正常工作,针对该问题目前还没有合适的解决方案。
发明内容
本发明实施例提供一种传输方案的确定方法、装置和设备,用于解决在实际应用中,如果UE从连接态进入空闲态,由于UE的移动性,UE在小区重选时选择了其他基站,且该基站所支持的能力与UE与核心网设备协商的能力不同,或者该核心网设备已经过载等情况下,UE驻留在该基站下并不能正常工作的问题。
本发明第一方面提供一种传输方案的确定方法,包括:
基站获取UE的传输方案切换指示;所述UE的传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输;
所述基站根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置。
在本方案中,基站为UE当前连接的基站,基站可以自己生成对UE的传输方案进行切换指示的指示,也可以是接收核心网设备发送的指示,也可以是根据UE主动触发的传输方案切换生成上述指示,对此不做具体限制。
本方案提供的传输方案的确定方法,基站通过UE和自身或者核心网设备的状态获取传输方案切换指示,并与UE之间进行切换后的传输方案的配置,不需要UE与核心网设备重新进行附着和跟踪区更新,实现UE的传输方案的切换,确保UE和基站在能力不匹配的情况下可以进行传输方案的切换继续进行工作。
具体的实现方式中,若所述传输方案切换指示指示所述UE的传输方案由用户面传输切换至控制面传输,所述基站根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置,包括:
所述基站向所述UE发送第一指示;所述第一指示用于指示所述UE将用户面传输使用的上下文信息挂起或者释放;
所述基站接收所述UE发送的上下文信息挂起完成消息。
进一步地,所述基站向所述UE发送第一指示,包括:
所述基站向所述UE发送无线资源控制(Radio Resource Control,RRC)连接重配置消息;所述RRC连接重配置消息中携带所述第一指示;
或者,
所述基站向所述UE发送RRC连接挂起请求消息;所述RRC连接挂起请求消息中携带所述第一指示。
可选的,所述基站获取UE的传输方案切换指示,包括:
所述基站接收核心网设备发送的初始上下文建立请求消息;所述初始上下文建立请求消息携带所述UE的所述传输方案切换指示;
或者,
所述基站接收核心网设备发送的UE上下文恢复消息;所述UE上下文恢复消息携带所述UE的所述传输方案切换指示;
或者,
所述基站接收所述核心网设备发送的下行非接入层传输消息,所述下行NAS传输消息携带所述UE的传输方案切换指示。
上述几个方案提供了在UE的传输方案由用户面传输切换到控制面传输的具体实现方式,用户面传输切换至控制面传输的过程中,不需要进行安全建立的过程,只需要对UE进行指示,指示UE挂起或者释放在用户面传输过程中使用的上下文信息即可,以便在下次使用的用户面传输的时候可以直接根据挂起的信息进行传输即可,不需要重新进行上下文信息的获取。
可选的,若所述传输方案切换指示指示所述UE的传输方案由控制面传输切换至用户面传输,所述基站根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置,包括:
所述基站向所述UE发送安全模式命令消息;
所述基站接收所述UE发送的安全模式完成消息;
所述基站向所述UE发送RRC连接重配置消息,所述RRC连接重配置消息携带指示停止使用控制面传输的信息;
所述基站接收所述UE发送的RRC连接重配置完成消息。
可选的,所述基站获取UE的传输方案切换指示,包括:
所述基站接收所述UE发送的指示使用用户面传输的NAS消息;
所述基站将所述NAS消息转发给所述核心网设备;
所述基站接收核心网设备发送的所述UE的所述传输方案切换指示。
可选的,所述基站接收所述UE发送的指示使用用户面传输的NAS消息,包括:
所述基站接收所述UE发送的RRC连接建立完成消息,所述RRC连接建立完成消息携带所述NAS消息;
则所述基站将所述NAS消息转发给所述核心网设备,包括:
所述基站向所述核心网设备发送初始UE消息;所述初始UE消息携带所述NAS消息。
上述几个方案提供了在UE的传输方案由控制面传输切换至用户面传输的具体实现方式,控制面传输切换至用户面传输的过程中,基站需要与UE之间建立安全模式,基站首先向UE发起安全模式命令,以使在与UE之间建立相应的安全模式,UE返回安全模式建立完成消息之后,基站再向UE发起RRC连接重配置消息,进行RRC连接重配置完成之后,直接进入用户面传输,实现UE的传输方案切换,在能力不匹配时可以切换UE的传输方式继续进行工作。
另外,所述基站获取UE的传输方案切换指示,包括:
所述基站接收所述UE发送的所述UE与核心网设备协商的第一传输方案;
若所述基站自身支持的第二传输方案与所述第一传输方案不同,则所述基站将对所述UE进行传输方案切换指示。
可选的,所述基站接收所述UE发送的所述UE与核心网协商的第一传输方案,包括:
所述基站接收UE发送的RRC连接建立请求消息;所述RRC连接建立请求消息携带所述第一传输方案;
或者,
所述基站接收所述UE发送的RRC连接建立完成消息;所述RRC连接建立完成消息携带所述第一传输方案;
或者,
所述基站接收所述UE发送的RRC连接恢复消息;所述RRC连接恢复消息携带所述第一传输方案;
或者,
所述基站接收所述UE发送的RRC恢复完成消息;所述RRC恢复完成消息携带所述第一传输方案。
在上述方案中,UE在RRC连接请求消息中向基站指示了UE与核心网设备协商的传输方案,基站发现与自身支持的传输方案不匹配时,可以RRC连接完成消息向UE指示进行传输方案的切换。之后在初始UE消息中向核心网设备发送UE的传输方案切换指示,可选的,如果UE在其他消息中上报协商的传输方案,基站也可以通过另外的信令通知UE进行切换,并向核心网设备确定。
可选的,所述基站获取UE的传输方案切换指示,包括:
所述基站接收核心网设备发送的过载指示;
若所述过载指示指出所述核心网设备控制面传输过载,则所述基站生成所述UE的所述传输方案切换指示,所述传输方案切换指示指示将所述UE的传输方案由控制面传输切换为用户面传输。
在该方案中,核心网设备可以向基站发送控制面传输方案引起的过载指示,基站在接收到UE发送的RRC连接请求消息中携带了指示使用控制面传输方案时,基站可以根据该过载指示信息,通过RRC连接完成消息,携带该传输方案切换指示,指示UE切换至用户面传输方案,使得在过载的情况下UE也可以通过切换传输方案继续工作。
本发明第二方面提供一种传输方案的确定方法,为与第一方面对应的UE侧的方案,具体包括:
UE获取传输方案切换指示;所述传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输;
所述UE根据所述传输方案切换指示与基站进行切换后的传输方案的配置。
可选的,若所述传输方案切换指示指示所述UE的传输方案由用户面传输切换至控制面传输,则所述UE根据所述传输方案切换指示与基站进行切换后的传输方案的配置,包括:
所述UE接收所述基站发送的第一指示;所述第一指示用于指示所述UE 将用户面传输使用的上下文信息挂起或者释放;
所述UE将用户面传输使用的上下文信息挂起或者释放;
所述UE向所述基站发送上下文信息挂起完成消息。
可选的,所述UE接收所述基站发送的第一指示,包括:
所述UE接收所述基站发送的RRC连接重配置消息;所述RRC连接重配置消息中携带所述第一指示。
可选的,若所述传输方案切换指示指示所述UE的传输方案由控制面传输切换至用户面传输,则所述UE根据所述传输方案切换指示与基站进行切换后的传输方案的配置,包括:
所述UE接收所述基站发送的安全模式命令消息;
所述UE建立安全模式,并向所述基站发送安全模式完成消息;
所述UE接收所述基站发送的RRC连接重配置消息;所述RRC连接重配置消息携带指示停止使用控制面传输的信息;
所述UE进行RRC连接配置,并向所述基站发送RRC连接重配置完成消息。
可选的,所述UE获取传输方案切换指示,包括:
所述UE接收所述基站发送的所述传输方案切换指示;
或者,
所述UE向所述基站发送RRC连接建立请求消息;
所述UE接收所述基站发送的RRC连接拒绝消息,并根据所述RRC连接拒绝消息,生成所述传输方案切换指示。
或者,
所述UE向所述基站发送RRC连接建立完成消息;
所述UE接收所述基站发送的RRC连接释放消息,并根据所述RRC连接释放消息,生成所述传输方案切换指示。
本发明第三方面提供一种传输方案的确定方法,应用于核心网设备侧,包括:
核心网设备向基站发送第一消息;所述第一消息用于使所述基站确定UE的传输方案切换指示;所述传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输;
核心网设备接收基站返回的所述UE的传输方案切换完成消息。
可选的,所述核心网设备向基站发送第一消息,包括:
所述核心网设备向所述基站发送初始上下文建立请求消息;所述第一消息为所述初始上下文建立请求消息;
或者,
所述核心网设备向所述基站发送下行NAS传输消息,所述第一消息为所述下行NAS传输消息;所述下行NAS传输消息携带所述UE的传输方案切换指示。
可选的,所述核心网设备向所述基站发送第一消息之前,所述方法还包括:
所述核心网设备接收所述基站发送的初始UE消息;所述初始UE消息包括所述UE的BSR、DVI或者所述UE的传输方案切换指示;
或者,
所述核心网设备接收所述基站发送的上行NAS传输消息;所述上行NAS传输消息包括所述UE的BSR、DVI或者所述UE的传输方案切换指示。
可选的,所述第一信息还包括过载指示;所述过载指示用于指出所述核心网设备控制面传输过载。
本发明第四方面提供一种传输方案的确定方法,应用在UE当前连接的第一基站侧,具体包括:
第一基站向第二基站发送切换请求消息;所述切换请求消息中包括所述UE使用的传输方案;
所述第一基站接收所述第二基站返回的切换确认消息或者切换拒绝消息。
本发明第五方面提供一种传输方案的确定方法,应用在第一基站为UE选择的要切换至UE连接的目标基站侧,即第二基站,具体方案包括:
第二基站接收第一基站发送的切换请求消息;所述切换请求消息中包括UE当前使用的传输方案;所述第一基站为所述UE当前使用的基站;
所述第二基站根据所述切换请求消息,确定是否允许所述UE接入;
若所述第二基站确定允许所述UE接入,则向所述第一基站返回切换确认消息;否则所述向所述第一基站返回切换拒绝消息。
可选的,所述切换请求消息还包括所述UE的传输能力信息;所述UE的传输能力信息用于指示所述UE支持的传输方案。
可选的,所述第二基站根据所述切换请求消息,确定是否允许所述UE接入,包括:
若所述第二基站支持的传输方案与所述UE当前使用的传输方案相同,则允许所述UE接入;否则不允许所述UE接入。
可选的,所述第二基站根据所述切换请求消息,确定是否允许所述UE接入,还包括:
若所述UE支持的传输方案包括所述第二基站支持的传输方案,则允许所述UE接入;
所述切换确认消息还包括指示所述UE切换至所述第二基站支持的传输方案的切换指示。
在上述第四方面和第五方面的方案中,对于需要切换的场景,当UE与网络侧使用CP/UP方案进行通信时,第一基站(源基站)决定进行切换操作时,第一基站向第二基站(目标基站)基站发送切换请求,切换请求中将使用的CP/UP方案进行指示,可选的,也可将UE支持的能力进行指示,如只支持CP,或者UP或者都支持,以及更倾向于支持什么方案。此两种信息可以放在UE上下行信息中,也可以作为单独的IE进行存放。如果第二基站在准许接入的情况下,且第二基站支持第一基站指示的传输的方案时,可以在切换确认消息中进行确认指示,然后第一基站接收到切换请求确认消息后,向UE发送RRC重配置信息,可以在信息中指示其使用的方案。
另外,如果第二基站支持的能力与第一基站指示的UE和网络侧使用的能力不一致时,第二基站可以通过向第一基站发送的切换确认消息指示UE应使用的方案,即指示UE进行传输方案的切换,第一基站接收到该消息后,通过RRC连接重配置消息将其发送给UE,UE收到后,向第二基站发送RRC连接重配置完成,实现传输方案的切换。
本发明第五方面提供一种传输方案的确定方法,应用在基站侧,在UE与基站建立连接之前,基站通过广播消息,广播通知所有的UE该基站支持的传输方案,例如支持控制面传输或者只支持用户面传输的能力。当UE在进行小区重选时,通过读取小区的广播消息时,确定该小区的基站与自身的 传输方案不匹配时,直接不进行该传输方案的接入,寻找其他的小区接入或者重新协商,或者UE直接进行传输方案的切换。
本发明第六方面提供一种传输方案的确定方法,核心网设备对于使用控制面传输造成的过载的情况,可以在现有信令的基础上,增加过载原因,通知给基站的过载指示中增加了由于控制面传输过载造成,基站可以在广播消息中指示核心网设备是否过载,以使UE在建立连接的时候直接切换传输方案或者寻找其他小区驻留,或者重新进行协商。UE通过携带过载指示的基站的广播消息进行接入控制,避免接入后被核心网设备拒绝连接,简单高效。
本发明第七方面提供一种传输方案的确定方法,核心网设备依然是对于使用控制面传输造成的过载的情况,增加过载原因之后,向基站发送过载指示,UE发送携带使用控制面传输的RRC连接建立请求消息,在基站接收到UE发送的RRC连接建立请求消息时,可以根据核心网设备的过载指示直接进行拒绝,并且可以通过RRC连接拒绝消息中携带拒绝原因,和/或指示消息,和/或指示UE重新连接其他基站的重定向消息。该指示消息可以指示UE进行传输方案切换,也可以指示UE进行避让,UE根据其中的相关参数进行退避,减轻核心网设备的负载。
本发明第八方面提供一种传输方案的确定方法,核心网设备向基站发送原因为控制面传输过载的过载指示,UE向基站发送使用控制面传输方案的RRC连接请求消息之后,基站根据该过载指示信息,通过RRC连接建立消息携带传输方案切换指示,指示UE切换为用户面传输方案,并通过初试UE消息告知核心网设备。如果UE不支持用户面传输,则进行连接释放。基站根据核心网设备的过载原因通知UE进行传输方案切换,减轻核心网设备的负载。
本发明第九方面提供一种传输方案的确定方法,在该方案中,核心网设备由于控制面传输过载后,对于连接态的UE可以触发S1释放流程,通过RRC连接恢复消息通知UE进行跟踪区更新,使得基站在选择核心网设备时,可以选择其他的核心网设备,实现核心网设备之间的负载均衡。
本发明第十方面提供一种传输方案的确定方法,在该方案中,基站根据核心网设备的指示,为UE选择新的核心网设备,具体的可以是核心网设备之间进行交互,选择一个同样支持控制面传输方案的核心网设备发送给基站, 进行重新路由,减轻原来的核心网设备的负载。
本发明第十一方面提供一种传输方案的确定装置,包括:
用于接收消息的接收模块、用于发送消息的发送模块以及用于控制程序指令执行的处理模块;
所述接收模块用于获取UE的传输方案切换指示;所述UE的传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输;
所述处理模块用于根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置。
该传输方案的确定装置,可以通过软件实现,也可以结合硬件设备实现,接收模块可以被实现为接收器、发送模块可以被具体实现为发送器,处理模块可以被实现为处理器,用于执行上述任一种方案中基站的技术方案。
本发明第十二方面提供一种传输方案的确定装置,包括:
用于接收消息的接收模块、用于发送消息的发送模块以及用于控制程序指令执行的处理模块;
所述接收模块用于获取传输方案切换指示;所述传输方案切换指示用于指示所述传输方案的确定装置的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输;
所述处理模块用于根据所述传输方案切换指示与基站进行切换后的传输方案的配置。
该传输方案的确定装置,可以通过软件实现,也可以结合硬件设备实现,接收模块可以被实现为接收器、发送模块可以被具体实现为发送器,处理模块可以被实现为处理器,用于执行上述任一种方案中用户设备的技术方案。
本发明第十三方面提供一种传输方案的确定装置,包括:
用于接收消息的接收模块、用于发送消息的发送模块以及用于控制程序指令执行的处理模块;
所述发送模块用于向基站发送第一消息;所述第一消息用于使所述基站确定UE的传输方案切换指示;所述传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输;
所述接收模块用于接收基站返回的所述UE的传输方案切换完成消息。
该传输方案的确定装置,可以通过软件实现,也可以结合硬件设备实现,接收模块可以被实现为接收器、发送模块可以被具体实现为发送器,处理模块可以被实现为处理器,用于执行上述任一种方案中核心网设备的技术方案。
本发明第十四方面提供一种基站,包括:存储有程序指令的存储器、用于控制程序指令执行的处理器、用于接收消息的接收器和用于发送消息的发送器;
所述处理器用于:
获取UE的传输方案切换指示;所述UE的传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输;
根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置。
本发明第十五方面提供一种UE,包括:存储有程序指令的存储器、用于控制程序指令执行的处理器、用于接收消息的接收器和用于发送消息的发送器;
所述处理器用于:
获取传输方案切换指示;所述传输方案切换指示用于指示UE的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输;
根据所述传输方案切换指示与基站进行切换后的传输方案的配置。
本发明第十六方面提供一种核心网设备,包括:存储有程序指令的存储器、用于控制程序指令执行的处理器、用于接收消息的接收器和用于发送消息的发送器;
所述发送器用于向基站发送第一消息;所述第一消息用于使所述基站确定UE的传输方案切换指示;所述传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输;
所述接收器用于接收基站返回的所述UE的传输方案切换完成消息。
本发明提供的传输方案的确定方法、装置和设备,基站通过UE和自身或者核心网设备的状态获取传输方案切换指示,并与UE之间进行切换后的传输方案的配置,不需要UE与核心网设备重新进行附着和跟踪区更新,实现UE的传输方案的切换,确保UE和基站在能力不匹配的情况下可以进行传输方案的切换继续进行工作。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本发明传输方案的确定方法的应用场景示意图;
图2为本发明传输方案的确定方法实施例一的流程图;
图3为本发明传输方案的确定方法实施例二的流程图;
图4为本发明传输方案的确定方法实施例三的流程图;
图5为本发明传输方案的确定方法实例一的交互示意图;
图6为本发明传输方案的确定方法实例二的交互示意图;
图7为本发明传输方案的确定方法实施例四的流程图;
图8为本发明传输方案的确定方法实例三的交互示意图;
图9为本发明传输方案的确定方法实例六的交互示意图;
图10为本发明传输方案的确定装置实施例一的结构示意图;
图11为本发明传输方案的确定装置实施例二的结构示意图;
图12为本发明传输方案的确定装置实施例三的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
图1为本发明传输方案的确定方法的应用场景示意图,本发明的方案可以应用于网络大覆盖、多连接的无线通信***,如图2所示,主要应用在支持M2M通信的***中,涉及网元包括用户设备(User Equipment,UE)、基站以及核心网设备。
这里的UE指的是支持M2M、增强类机器类型通信(enhanced Machine  Type Communications,EMTC)、窄频IoT、长期演进(Long Term Evolution,LTE)等的通信类型的终端设备,基站用于连接UE和核心网设备,可以是演进型基站、基站、物联网基站等,核心网设备可以包括:服务网关节点(CIoT Serving Gateway Node,C-SGN),移动性管理实体(Mobility Management Entity,MME),业务网关(Serving GateWay,S-GW)以及PDN网关(PDN GateWay,P-GW)等。
在上述***架构下,当UE从连接态进入空闲态时,UE可能由于移动性,而在小区重选时选择了其他基站,而选择的基站所支持的能力与UE和核心网设备协商的能力可能不一致,则不能正常工作,例如:UE和MME协商使用UP方案,而UE在空闲态时选择了一个只支持CP能力的基站下的小区进行驻留。第二种场景,当MME由于使用CP方案进行过载时,则需要禁止使用CP方案,或者让UE切换成UP方案。另外,在一些场景下,如根据业务需求,UE也需要进行CP/UP转换。当需要连接业务生成环境功能(Service Creation Environment Function,SCEF)时,只能使用CP方案。针对上述问题以及应用场景,本发明介绍CP/UP进行切换的相关方案,解决UE与基站的能力不匹配时,UE无法正常工作的问题。
图2为本发明传输方案的确定方法实施例一的流程图;如图2所示,该方案的执行主体为基站,该传输方案的确定方法的具体实现步骤为:
S101:基站获取UE的传输方案切换指示。
在本步骤中,所述UE的传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输。即该传输方案切换指示用来指示UE的传输方式进行切换,或者还可以指示传输方案重新进行确定。该传输方案切换指示可以是基站根据UE当前使用的传输方案和基站自身的性能确定生成的,也可以是接收核心网设备(例如:MME)发送的,还可以是UE主动触发传输方案进行切换生成的,具体方式不做限制。
S102:所述基站根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置。
在本方案中,传输方案切换方向不同的时候,UE与基站的配置过程有所不同,若所述传输方案切换指示指示所述UE的传输方案由用户面传输切换 至控制面传输,则基站根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置的具体过程为:所述基站向所述UE发送第一指示;所述第一指示用于指示所述UE将用户面传输使用的上下文信息挂起或者释放;所述基站接收所述UE发送的上下文信息挂起完成消息。
即基站在确定了上述传输方案切换指示之后,基站可以向UE发送下行的消息,并在该消息中增加一个指示,即上述第一指示,用来指示UE将用户面传输方案时的上下文信息进行挂起或者释放,当基站接收到UE返回的上下文信息挂起完成或者释放完成消息时,配置过程完成,直接进入控制面传输方案既可。可选的,基站也可以直接发送该第一指示不用携带在消息中。
可选的,提供下面几种发送第一种指示的方式:
第一种方式,所述基站向所述UE发送无线资源控制RRC连接重配置消息;所述RRC连接重配置消息中携带所述第一指示。
第二种方式,所述基站向所述UE发送RRC连接挂起请求消息;所述RRC连接挂起请求消息中携带所述第一指示。
进一步的在传输方案由用户面切换至控制面的过程中,所述基站获取用户设备UE的传输方案切换指示的具体方式至少包括以下几种:第一种方式,所述基站接收核心网设备发送的初始上下文建立请求消息;所述初始上下文建立请求消息携带所述UE的所述传输方案切换指示;第二种方式,所述基站接收核心网设备发送的UE上下文恢复消息;所述UE上下文恢复消息携带所述UE的所述传输方案切换指示;第三种方式,所述基站接收所述核心网设备发送的下行非接入层传输消息,所述下行非接入层(Non-Access Stratum,NAS)传输消息携带所述UE的传输方案切换指示。
若所述传输方案切换指示指示所述UE的传输方案由控制面传输切换至用户面传输,则基站根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置的具体过程为:
所述基站向所述UE发送安全模式命令消息;所述基站接收所述UE发送的安全模式完成消息;所述基站向所述UE发送RRC连接重配置消息,所述RRC连接重配置消息携带指示停止使用控制面传输的信息;所述基站接收所述UE发送的RRC连接重配置完成消息。
其含义是:基站在确定要对UE的传输方案进行切换,即获取到传输方 案切换指示之后,基站向UE发起安全模式命令,进行安全的建立,UE在收到消息后向基站发送安全模式完成的消息完成安全建立,基站再次向UE发送RRC连接重配置消息,进行SRB2、DRB等的建立过程,UE再向基站发送RRC连接重配置完成消息,完成传输方案切换的配置过程,进行用户面传输方案。
在该控制面传输方案切换至用户面传输方案的所述基站获取UE的传输方案切换指示的具体方式为:所述基站接收所述UE发送的指示使用用户面传输的NAS消息;所述基站将所述NAS消息转发给所述核心网设备;所述基站接收核心网设备发送的所述UE的所述传输方案切换指示。
其中,基站接收UE发送的指示使用用户面传输的NAS消息的具体方式为:基站接收UE发送的RRC连接建立完成消息,RRC连接建立完成消息携带NAS消息;则基站将NAS消息转发给核心网设备具体方式为:基站向核心网设备发送初始UE消息;初始UE消息携带NAS消息。
本实施例提供的传输方案的确定方法,基站通过UE和自身或者核心网设备的状态获取传输方案切换指示,并与UE之间进行切换后的传输方案的配置,不需要UE与核心网设备重新进行附着和跟踪区更新,实现UE的传输方案的切换,确保UE和基站在能力不匹配的情况下可以进行传输方案的切换继续进行工作,并且可以通过NAS消息来发送指示,可以减小信令开销。
图3为本发明传输方案的确定方法实施例二的流程图;如图3所示,该方案的执行主体为基站,该传输方案的确定方法的具体实现步骤为:
S201:UE获取传输方案切换指示。
在本步骤中,所述传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输,获取传输方案切换指示至少包括以下几种实现方式:
第一种实现方式,所述UE接收所述基站发送的所述传输方案切换指示。
第二种实现方式,所述UE向所述基站发送RRC连接建立请求消息;所述UE接收所述基站发送的RRC连接拒绝消息,并根据所述RRC连接拒绝消息,生成所述传输方案切换指示。
第三种实现方式,所述UE向所述基站发送RRC连接建立完成消息;所述UE接收所述基站发送的RRC连接释放消息,并根据所述RRC连接释放 消息,生成所述传输方案切换指示。
S202:所述UE根据所述传输方案切换指示与基站进行切换后的传输方案的配置。
在本步骤中,UE可以接收基站发的传输方案切换指示,也可以根据接收到的广播信息中的核心网设备的过载信息获取该传输方案切换指示,在UE确定需要接收传输方案切换之后,不同的切换方向的处理方式不同。具体的:
若所述传输方案切换指示指示所述UE的传输方案由用户面传输切换至控制面传输,则UE根据所述传输方案切换指示与基站进行切换后的传输方案的配置具体实现为:
UE接收所述基站发送的第一指示;所述第一指示用于指示所述UE将用户面传输使用的上下文信息挂起或者释放;所述UE将用户面传输使用的上下文信息挂起或者释放;所述UE向所述基站发送上下文信息挂起完成消息或者释放完成消息。该第一指示也可以通过其他的消息携带,对此具体不做限制。
其中,UE接收第一指示可以通过接收基站发送的RRC连接重配置消息来实现,所述RRC连接重配置消息中携带所述第一指示。
可选的,若所述传输方案切换指示指示所述UE的传输方案由控制面传输切换至用户面传输,则UE根据所述传输方案切换指示与基站进行切换后的传输方案的配置可以具体实现为:
所述UE接收所述基站发送的安全模式命令消息;所述UE建立安全模式,并向所述基站发送安全模式完成消息;所述UE接收所述基站发送的RRC连接重配置消息;所述RRC连接重配置消息携带指示停止使用控制面传输的信息;所述UE进行RRC连接配置,并向所述基站发送RRC连接重配置完成消息。
本实施例提供的传输方案的确定方法,UE通过基站或者接收到的其他信息获取传输方案切换指示,并与基站之间进行切换后的传输方案的配置,不需要UE与核心网设备重新进行附着和跟踪区更新,实现UE的传输方案的切换,确保UE和基站在能力不匹配的情况下可以进行传输方案的切换继续进行工作,并且可以通过NAS消息来发送指示,可以减小信令开销。
图4为本发明传输方案的确定方法实施例三的流程图;如图4所示,该 方案的执行主体为核心网设备,该传输方案的确定方法的具体实现步骤为:
S301:核心网设备向基站发送第一消息。
在本步骤中,所述第一消息用于使所述基站确定UE的传输方案切换指示;所述传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输。
对于核心网设备来说,可以直接向基站发送指示,指示UE切换传输方案,也可以向基站发送过载信息或者其他的信息,以使基站确定UE的传输方案切换指示,具体的发送的该第一消息可以具体包括以下几种情况:
第一种方式:核心网设备向所述基站发送初始上下文建立请求消息。
即所述第一消息为所述初始上下文建立请求消息;在接收到该初始上下文建立请求消息之后,由于用户面传输不需要该初始上下文的建立,基站可以确定核心网设备指示使用控制面传输方案,如果UE使用的本来是控制面传输,则不需要切换;如果用户使用的用户面传输,则基站生成切换指示,指示用户切换至控制面传输。
第二种方式,核心网设备向所述基站发送下行非接入层NAS传输消息。即第一消息为所述下行NAS传输消息;所述下行NAS传输消息携带所述UE的传输方案切换指示。
可选的,所述第一信息还包括过载指示;所述过载指示用于指出所述核心网设备控制面传输过载。以使基站根据该过载指示指示UE切换至用户面传输,生成对应的传输方案切换指示。
S302:核心网设备接收基站返回的所述UE的传输方案切换完成消息。
在本步骤中,基站和UE完成切换后的传输方案的配置时,需要向核心网报告,即基站可以通过发送传输方案切换完成消息告知核心网设备,已完成切换。
在该方案中,可选的,核心网设备向所述基站发送第一消息之前,所述核心网设备接收所述基站发送的初始UE消息;所述初始UE消息包括所述UE的缓存状态报告(Buffer Status Report,BSR)、数据量指示(Data Volume Indication,DVI)或者所述UE的传输方案切换指示。
可选的,核心网设备向所述基站发送第一消息之前,核心网设备接收所述基站发送的上行NAS传输消息;所述上行NAS传输消息包括所述UE的 BSR、DVI或者所述UE的传输方案切换指示。
其含义是基站可以通过BSR和或DVI对核心网设备进行UE的传输方案的指示。
本实施例提供的传输方案的切换方法,核心网设备通过向基站发送切换指示或者过载信息,或者上下文建立请求消息等信息,告知基站需要进行UE的传输方案的切换,基站和UE根据该传输方案切换指示,完成切换后传输方案的配置,实现UE的传输方案的切换,确保UE和基站在能力不匹配的情况下可以进行传输方案的切换继续进行工作。
结合上述几个实施例的描述,下面以UE、eNB和MME(作为核心网设备的一具体实例)为例,详细说明UE传输方案的切换过程:
图5为本发明传输方案的确定方法实例一的交互示意图,当UE与MME协商使用CP方案时,如何切换成UP方案,场景:UE在上一次连接过程中,与MME协商使用CP方案,当UE进入空闲态后,UE的NAS层决定使用UP方案,如图5所示,UE从控制面传输切换至用户面传输的详细实现步骤为:
S401:UE向基站发送随机接入请求消息。
S402:基站向UE返回随机接入应答消息。
在上述步骤中,UE发送随机接入请求(Random Access Request)消息给基站(eNB),作为回应,基站发送随机接入应答(Random Access Response)消息给UE。
S403:UE向基站发送RRC连接请求消息。
在本步骤中,UE发送RRC连接请求(RRCConnection Request)消息给eNB,包含SEA临时移动用户标识(SAE-temporary mobile subscriber identity,S-TMSI)。
S404:基站向UE返回RRC连接建立消息。
S405:UE向基站发送RRC连接建立完成消息。
在上述步骤中,UE接收到消息后,发送RRC连接建立完成(RRC Connection Setup Complete)消息。一种具体实现中红,该RRC连接建立完成消息可以携带NAS消息,其中包含数据NAS PDU。可选的其中RRC连接建立完成消息也可以携带服务请求(Service Request,SR)或者扩展服务请求 (Extended Service Request,ESR)并增加一个指示,指示该UE使用UP方案,具体可以使用1个比特进行表示。即UE触发将传输方案由控制面传输切换至用户面传输。
S406:基站向MME发送初始UE消息。
该步骤S406和S405为两种不同的触发方式,并列方案,具体实现中可选择其中任一种方式进行实现。
在该步骤S406中,eNB收到消息后,可将NAS消息通过Initial UE Message发送给MME。可选的,其中该初始UE消息可包含基站发送给MME的数据量指示,或者根据UE上报给基站的BSR或者DVI,基站向MME进行切换方案指示,或者UE在NAS消息中向MME进行切换指示。或者MME自身决定切换成UP方案。
S407:MME向基站返回初始上下文建立请求消息或者下行NAS传输消息。
在本步骤中,假设基站既支持CP方案又支持UP方案,且MME和基站可通过具体信令或者操作、管理和维护(operation,administration and maintenance,OAM)配置知道彼此支持的能力。MME根据具体的指示信息或者负载情况等其他信息,决定使用UP方案后,向基站发送Initial Context Setup Request,或者下行NAS transport进行指示。
S408:基站向UE发送安全模式命令。
在本步骤中,基站接收到MME发来的消息后,向UE发起安全模式命令(Security Mode Command,SMC),进行安全的建立。
S409:UE向基站返回安全模式完成。
在本步骤中,UE收到消息后向基站发送Security Mode Complete,安全建立完成。
S410:基站向UE发送RRC连接重配置消息。
在本步骤中,基站向UE发送RRC连接重配置(RRC Connection Reconfiguration)消息,进行信令无线承载(signaling radio bearer,SRB2),数据无线承载(Data Radio Bearer,DRB)等建立过程。
S411:UE向基站返回RRC连接重配置完成消息。
在本步骤中,UE向基站发送RRC连接重配置完成(RRC Connection  Reconfiguration Complete)消息。配置完成,进入UP方案。
图6为本发明传输方案的确定方法实例二的交互示意图,如图6所示,当UE处于连接态,UE从UP切换至CP方案的具体实现步骤如下:
S501:UE向基站发送随机接入请求消息。
S502:基站向UE返回随机接入应答消息。
在上述步骤中,UE发送随机接入请求(Random Access Request)消息给基站(eNB),作为回应,基站发送随机接入应答(Random Access Response)消息给UE。
S503:UE向基站发送RRC连接请求消息。
S504:基站向UE返回RRC连接建立消息。
S505:UE向基站发送RRC连接建立完成消息。
在上述步骤中,UE发送RRC连接请求(RRC Connection Request)消息给eNB,包含S-TMSI。eNB向UE发送RRC连接建立(RRC Connection Setup)消息。UE接收到消息后,发送RRC连接建立完成(RRC Connection Setup Complete)消息,完成RRC连接建立。
S506:基站向MME发送初始UE消息。
S507:MME向基站返回初始上下文建立请求消息。
S508:基站向UE发送安全模式命令。
S509:UE向基站返回安全模式完成。
S510:基站向UE发送RRC连接重配置消息。
S511:UE向基站返回RRC连接重配置完成消息。
通过上述步骤完成SMC和重配置过程。
之后,可选的,UE可通过上行消息向基站发送消息,可包括BSR/DVI,也可在NAS消息中包含这些信息。
S512:上行NAS传输消息。
在本步骤中,eNB收到消息后,可将NAS消息通过初始UE消息(Initial UE Message)或者上行上行NAS传输(NAS Transport)消息发送给MME。其中该条消息可包含基站发送给MME的数据量指示,或者根据UE上报给基站的BSR/DVI,基站向MME进行切换方案指示,或者UE在NAS消息中向MME进行切换指示。或者MME自己决定切换成CP方案。
S513:下行NAS传输消息,携带控制面传输指示。
在本步骤中,S512和S513为并列的两种方案,择一执行即可,S512为基站触发切换,S513为MME触发切换。
在S513中,当MME触发转换CP方案时,可以通过下行NAS传输(Downlink NAS Transport)消息向基站进行指示,包含指示信息。当有下行数据时,也可将下行数据直接携带在该信令中。
在该方案中,可选的,当UE的NAS层决定在连接态从UP切换成CP方案时,一种实现方式为:UE向基站发送SR或者ESR,增加一个指示(同上述实施例),指示转换为CP方案,基站将其转发给MME。另一种实现方式为:UE直接发送上行直传消息给基站,其中NAS PDU携带演进分组***承载指示(evolved packet system Bearer Indication,EBI),EBI可以为默认承载也可以使用之前DRB对应的,或者通过其他方式获得的。基站通过上行NAS传输将此消息进行转发给MME。
对于上述两种实现方式,MME可以通过Downlink NAS Transport向基站进行指示使用CP方案,基站通过下行消息直传将指示消息发给UE,此时即可使用CP方案发送数据。若此时有下行数据可以直接使用NAS进行传输,也可以不进行额外指示。
S514:基站向UE发送RRC连接重配置消息。
在本步骤中,若基站收到切换方案的指示,基站可以向UE发送RRC连接重配置(RRC Connection Reconfiguration)消息,在此消息中增加一个指示,用于指示释放或者挂起DRB等UP方案需要使用的信息。
S515:UE向基站返回RRC连接重配置完成消息。
在本步骤中,UE向基站发送RRC连接重配置完成(RRC Connection Reconfiguration Complete)消息。配置完成。进入CP方案。可选的可将UP方案中需要的UE的上下文在UE处进行Suspend.基站接收到消息后也可将UP方案中需要的UE的上下文进行Suspend。也可直接释放UP连接。
与上述S514和S515并列的一种可选方案为,基站也可以向UE发送Suspend信令指示,如RRC连接挂起请求(RRC Connection Suspend Request)消息,将DRB等信息进行挂起。UE将回复基站RRC连接挂起完成(RRC Connection Suspend complete),挂起过程是可选的,也可以在最后连接释放 信令进行挂起或释放。
完成上述配置的CP方案是有AS安全的。可选的,如果不需要也可以在,重配置消息或者其他消息中,进行安全去激活或者释放安全上下等操作。
在上述两个实例中,UE切换传输方案的过程中,UE不需要和MME重新进行附着或者跟踪区更新过程来协商传输方案,而是直接根据传输消息携带的指示和信息,进行传输方案的更换,解决了能力不匹配的问题。
在上述两种切换方案的基础上,一种具体的应用场景中,如果UE和MME协商为UP方案,而当UE小区重选后驻留小区的基站只支持CP能力。还可以又以下两种实现方式:
第一种方式,UE向基站发送RRC连接请求(RRC Connection Request)消息,其中该RRC Connection Request消息携带UE之前与MME协商的UP方案指示(UP preferred),基站收到信息后发现与自己能力不匹配,向UE发送RRC连接拒绝(RRC Connection Reject)消息给UE,并携带新的拒绝原因,或者重定向信息。即基站直接拒绝UE的连接,向UE返回RRC连接拒绝消息。基站可以通过X2口获得其他基站能力信息,可以通过重定向消息将支持该能力信息的基站或者基站下的小区信息发送给UE,这个信息通过重定向信息携带。
第二种方式,UE向基站发送RRC连接建立完成(RRC Connection Setup Complete)消息,并在该RRC Connection Setup Complete消息中携带UE之前与MME协商的UP方案指示(UP preferred),基站收到信息后发现与自己能力不匹配,向UE发送RRC Connection Release给UE,并携带新的拒绝原因,或者重定向信息。基站可以通过X2口获得其他基站能力信息,可以通过重定向消息将支持该能力信息的基站或者基站下的小区信息发送给UE,这个信息通过重定向信息携带。
在该可选的方案中,基站直接拒绝UE的连接,或者通过重定向消息直接指示UE可以接入的基站,避免再次选择时仍然能力不匹配的问题。
假设与上述可选方案的场景相同,UE在RRC连接请求(Connection Request)消息中向基站指示之前协商的UP方案,基站发现与自己的能力不匹 配,则通过RRC连接建立(Connection Setup)消息向UE指示更换CP方案。之后在通过初始UE消息向MME发送更换方案的指示消息。
同理,如果UE在消息RRC连接建立完成(Connection Setup Complete)消息中上报,则基站可通过额外的一条信令通知UE进行切换,并向MME确认。
可选的,基站通知后,可触发UE和MME的重新附着或者跟踪区更新过程,进行重新协商。
可选的,结合上述任一实现方案可知,基站获取UE的传输方案切换指示还可以通过所述UE发送的所述UE与核心网设备协商的第一传输方案;然后所述基站确定自身支持的第二传输方案与所述第一传输方案不同时,则所述基站将对所述UE进行传输方案切换指示。可以直接向UE发送传输方案切换指示。
在该方式中,基站接收所述UE发送的所述UE与核心网协商的第一传输方案的具体实现方案包括:
所述基站接收UE发送的RRC连接建立请求消息;所述RRC连接建立请求消息携带所述第一传输方案;或者,所述基站接收所述UE发送的RRC连接建立完成消息;所述RRC连接建立完成消息携带所述第一传输方案;或者,所述基站接收所述UE发送的RRC连接恢复消息;所述RRC连接恢复消息携带所述第一传输方案;或者,所述基站接收所述UE发送的RRC恢复完成消息;所述RRC恢复完成消息携带所述第一传输方案。
在上述方案中,基站直接通知UE切换传输方案,有效节省信令开销。
可选的,在与上述方案同样的场景下,UE也可以不向基站进行上报CP/UP指示,MME收到初始UE消息后,知道此UE之前协商的能力,当MME发现其选择基站不支持这种能力后,通过下行S1消息通知基站(初始消息或下行NAS消息),基站将释放连接,并携带原因值和重定向消息,触发UE切换传输方案,或者接入其他的基站。
图7为本发明传输方案的确定方法实施例四的流程图;如图7所示,在该方案中,执行主体为UE当前连接的第一基站,以及UE在确定接入其他基 站,例如第二基站时,第一基站和第二基站之间的交互,其具体过程为:
S601:第一基站向第二基站发送切换请求消息。
在本步骤中,在确定了将该UE由第一基站切换至第二基站时,所述切换请求消息中包括所述UE使用的传输方案。
S602:第二基站接收第一基站发送的切换请求消息。
所述切换请求消息中包括用户设备UE当前使用的传输方案;所述第一基站为所述UE当前使用的基站。
可选的,所述切换请求消息还包括所述UE的传输能力信息;所述UE的传输能力信息用于指示所述UE支持的传输方案。
S603:所述第二基站根据所述切换请求消息,确定是否允许所述UE接入。
在本步骤中,一种具体的实现方式为:若所述第二基站支持的传输方案与所述UE当前使用的传输方案相同,则允许所述UE接入;否则不允许所述UE接入。
可选的,若UE即支持CP传输也支持UP传输,这种情况下第二基站支持的传输方案与所述UE当前使用的传输方案不相同,也允许接入,在返回的切换确认消息中携带指示UE使用第二基站支持的传输方式即可。
即若所述UE支持的传输方案包括所述第二基站支持的传输方案,则允许所述UE接入;所述切换确认消息还包括指示所述UE切换至所述第二基站支持的传输方案的切换指示。
S604:若所述第二基站确定允许所述UE接入,则向所述第一基站返回切换确认消息;否则所述向所述第一基站返回切换拒绝消息。
S605:所述第一基站接收所述第二基站返回的切换确认消息或者切换拒绝消息。
结合上述的实现步骤,下面以UE、源基站(相当于第一基站)和目标基站(相当于第二基站)为例,详细说明该实现方式的具体过程:
图8为本发明传输方案的确定方法实例三的交互示意图,如图8所示,
S701:源基站向目标基站发送切换请求消息。
在本步骤中,对于需要切换的场景,当UE与网络侧使用CP/UP方案进行通信时,源基站决定进行切换操作时,源基站向目标基站发送切换请求 (handover Request)消息,切换请求中将UE当前使用的CP/UP方案进行指示。
可选的,在该切换请求消息中,也可将UE支持的能力进行指示,如只支持CP,或者UP或者都支持,以及更倾向于支持什么方案。
可选的,此两种信息可以放在UE上下行信息中,也可以作为单独的IE进行存放。
S702:目标基站确定根据是否允许UE接入。
在本步骤中,目标基站判断UE当前使用的传输方案与自身支持的传输方案是否相同,如果相同,则允许该UE接入,否则不允许该UE接入。
可选的,目标基站支持的能力与源基站指示的UE和网络侧使用的能力不一致时,目标基站可以通过向原基站发送的Handover Request Ack中指示UE应使用的方案。
S703:目标基站向源基站发送切换确认消息。
S704:源基站向UE发送RRC连接重配置消息。
S705:UE向目标基站发送RRC连接重配置完成消息。
在上述几个步骤中,目标基站在准许接入的情况下,如果目标基站支持源基站指示的传输的方案时,可以在切换确认中进行确认指示。源基站接收到切换请求确认消息后,向UE发送RRC重配置信息,可以在信息中指示其使用的方案,UE对目标基站进行连接配置,然后向目标基站发送连接重配置完成消息。
可选的,目标基站支持的能力与源基站指示的UE和网络侧使用的能力不一致时,目标基站可以通过向原基站发送的Handover Request Ack中指示UE应使用的方案,源基站接收到该消息后,通过RRC连接重配置消息将其发送给UE,UE收到后,向目标基站发送RRC连接重配置完成。
若基站发现UE支持的能力与自己的不匹配,如果可以回退到其他能力上如legacy LTE的传输方案,则可以使用回退方案,如果不支持,可以通过发送切换拒绝信息Handover Preparation Falure给源基站,并携带原因值表示能力不支持。
可选的,若源基站仅指示UE在源基站上使用的能力,而不指示UE支持的能力,目标基站在准许接入的情况下,如果目标基站支持源基站指示的传输的方案时,可以在切换确认中进行确认指示。源基站接收到切换请求确认 消息后,向UE发送RRC重配置信息,可以在信息中指示其使用的方案。
可选的,如果目标基站支持不支持源基站指示的传输的方案时,可以在切换确认信息中,指示UE需要使用的方案,源基站接收后将其转发给UE通过重配置消息,如果UE支持则在向目标基站发送的RRC连接重配置完成消息中进行确认指示,并在与目标基站建立的连接中使用指示的方案。
如果UE不支持,则向目标基站发送RRC连接重配置失败。
在本方案中,若目标基站拒绝接入,即向源基站返回的切换拒绝消息中可以携带拒绝原因。
可选的,目标基站在确定UE当前使用的传输方案与自身支持的传输方案能力不同时,可以在UE接入时直接拒绝UE的接入。
本实施例提供的传输方案的确定方法,应用于UE当前连接的基站和要切换到的目标基站,UE本身不一定要切换传输方案,也可以通过切换基站的方式解决能力不匹配的问题。
在上述任一种实现方式的基础上,本发明还提供一种基站通过广播的形式指示传输方案的方式,具体实现过程为:
基站通过广播进行传输方案的指示,具体可以指示基站支持的CP/UP能力,或者默认CP能力支持,当基站支持UP能力时,可以使用1比特在广播中指示,可以放在MIB中,或者SIB1,以及其他消息中。当UE进行小区重选后,在读取小区的广播消息时,发现与自己支持的传输方案不匹配时,UE可以不进行数据业务接入,但不限制信令接入。
UE发起附着或者跟踪区更新进行CP解决方案和UP解决方案的重新协商。使用重新协商的基站支持的能力接入;或者UE直接进行传输方案的切换,然后使用变更后的CP解决方案或者UP解决方案接入网络进行重新协商和数据传输。
本实现方式提供的传输方案的确定方法,UE通过基站广播的传输方案的支持,可以获得基站的能力,防止接入后不匹配而不能进行正常工作的情况,即使用***消息进行广播。
除了上述提供的由于能力不匹配的情况造成的UE接入基站后无法正常 工作的各种情况,对于智能抄表等类型的业务一般主要是小数据包上报业务,数据量小,针对此类业务现在主要有两种传输方案,一种是控制面传输方案,一种是用户面传输方案。使用用户面传输方案,数据通过S-GW向P-GW,而信令通过MME。而控制方案除了信令通过MME,数据也将经过MME,因此会出现MME过载的情况。
针对这种情况,所述基站获取用户设备UE的传输方案切换指示,还可以包括:所述基站接收核心网设备发送的过载指示;若所述过载指示指出所述核心网设备控制面传输过载,则所述基站生成所述UE的所述传输方案切换指示,所述传输方案切换指示指示将所述UE的传输方案由控制面传输切换为用户面传输。
具体实现方式为:MME向基站发送过载指示,该过载指示在现有信令的基础上,增加过载原因,指示是因为MME因为CP方案而过载。
基站在广播中指示MME是否过载信息,详细包括MME拒绝CP方案(异常报告除外),(CP solution with Non-exception report)功能是否激活。为了保证更省电,该激活指示可以用1比特进行表示,放到MIB中,也可以放在SIB1,或者其他***消息中;
当该功能激活后,如果使用CP方案的UE需要发起业务接入时,UE根据需要可能做两种操作:
1、UE不发起数据接入,反馈给NAS层原因值。由NAS层决定是否重新发起接入。下次接入网络前,UE重新检查***消息中的MME过载功能是否激活;
2、UE(也支持UP)发起attach或者TAU进行CP解决方案和UP解决方案的重新协商。
3、对于CP和UP同时支持的UE,可以直接发起连接并在,RRC连接建立完成(RRC Connection Setup Complete)消息中携带服务请求(Service Request),触发使用UP方案。或者如果已有挂起UP方案的上下文,则进行RRC恢复流程。
本实施例提供的传输方案的确定方法中,使用CP方案的UE可根据广播指示来判断是否对自己进行接入控制,避免接入后,而被拒绝连接,快速解决由于CP方案引起的MME过载导致的问题,简单高效,有效节省UE的电 量。
在上述实施例的基础上,MME发送给基站过载指示信息流程与上述方案一样。则基站还可以有如下两种处理方式:
第一种方式,UE在RRC连接请求消息中进行CP指示,在RRC连接请求消息中指示其使用的是CP方案,基站根据MME过载指示进行拒绝,则基站可以回复UE RRC连接拒绝消息,其中携带拒绝原因,和/或指示消息和/或重定向消息。拒绝原因指的是由于MME过载而拒绝,指示信息可包括使用CP方案的该UE退避的时间。
第二种方式,UE在RRC连接建立完成消息中进行CP指示,基站根据MME过载指示进行拒绝,则基站可以回复UE RRC连接释放消息,携带拒绝原因,或指示消息和/或重定向消息。拒绝原因指的是由于MME过载而拒绝,指示信息可包括使用CP方案的该UE退避的时间。
当UE被拒绝后,可能的操作有:UE可以根据指示消息中携带的等待时间相关参数,进行退避;或者,UE发起TAU或者attach变更CP方案的选择,使用UP方案,继续进行数据传输,这种方法适用于也支持UP方案的UE。
本实施例方式提供的传输方案的确定方法,在基站返回给UE的RRC连接拒绝消息中增加拒绝原因,UE可以根据指示信息进行退避或者重新附着或者跟踪区更新,有效减轻MME的负载,并避免由于过载造成的接入后不能正常工作的问题。
针对MME过载的情况,在一种具体实施方式中,提供一种核心网设备过载的具体处理方式,基站通过UE发送的RRC连接请求中携带的传输方案的指示信息,确定该UE的传输方式之后,若基站接收到核心网设备发送的UE当前使用的传输方案过载指示信息,则基站通过RRC连接设置携带传输方式切换指示,发送给UE,指示UE切换为与当前传输方式不同的方式。
具体的,以MME为例,UE向基站发送的RRC Connection Request中携带使用CP方案的指示,MME向基站发送原因值为CP方案引起的过载指示信息后,基站根据过载指示信息,通过RRC Connection Setup携带通知UE 切换成UP方案的指示信息,UE接收到消息后,向基站发送RRC Connection Setup Complete,进行切换完成确认,并通过Initial UE message发送给MME,进行方案更换指示。如果UE不支持,则使用RRC Connection Setup Complete通知基站,并进入释放连接过程。可选的,UE或者MME也可以向基站发送UE支持的能力信息,因此,基站如果知道UE不支持UP,可以直接释放连接。
进一步的,UE释放连接之后可以选择其他的小区驻留,或者根据基站获取到的信息重新选择合适核心网设备。
通过上述方式实现对MME过载的处理。
可选的,在一种具体实现中,当MME由于使用CP方案过载后,对于连接态的UE可以触发S1释放流程,触发原因是CP方案过载,向基站发送UE释放上下文命令,并在该UE释放上下文命令中携带原因为“load balancing TAU required”,并通过RRC连接释放通知UE,进行TAU,使得基站在选择MME时可以选择其他MME,具体通过MME发给基站选择MME的权重值来确定,可以将该MME的权重值设为0或者一个较小的概率。或者进行重新协商过程。对于空闲态UE,可以先通过寻呼使其进入连接态,再进行上述过程。可以将使用CP方案的UE,通过TAU选择其他MME,或者重新进行协商。实现MME间负载均衡,避免UE长时间不能使用CP进行传输,针对其他的使用UP方案的核心网设备,也可以采用同样的方式进行负载均衡。
图9为本发明传输方案的确定方法实例六的交互示意图,如图9所示,在该方案中,当前的核心网设备,即图中的第一核心网设备在确定使用控制面传输方案过载之后,向基站发送NAS重定向消息(即NAS Message Redirection Procedure),基站基于该消息中的路由参数(reroute parameters)中包含的核心网设备的群组标识选择一个新的核心网设备。具体也可以核心网设备通过与其他核心网设备交互,选择一个同样支持CP能力的核心网设备,即图中的第二核心网设备,并将其具体标识发送给基站,进行重新路由。同样的,对于UP过载时,也可以采用同样的方式。具体实现步骤为:
S801:NAS重定向消息。
S802:基站根据NAS重定向消息中携带的群组标识,在对应的群组中选择第二核心网设备。
该第二核心网设备与第一核心网同样支持CP传输方案。
S803:基站向第二重新选择的第二核心网设备发送初始UE消息或上行数据。
以MME为例,MME由于使用CP方案过载时,向基站发送“NAS Message Redirection Procedure”,基站基于该消息中的“reroute parameters”中包含的群组标识选择一个新的MME。也可以由MME通过与其他MME交互,选择一个同样支持CP能力的MME,并将其具体ID发送给基站,进行重新路由。
本实施例提供的传输方案的确定方法的一种具体实现方式,基站根据核心网设备的指示,重新路由新的核心网设备,减轻原核心网设备的负载,并且可以方式UE由于核心网设备过载造成的传输失败的问题。
在上述任一种方案中,若UE进行传输方案的切换,在切换完成后,需要上报给MME,UE可以通过上行NAS传输消息直接报告给MME,也可以通过基站发送的初始UE消息或者其他的上行消息上报给MME。
图10为本发明传输方案的确定装置实施例一的结构示意图,如图10所示,该传输方案的确定装置10包括用于接收消息的接收模块11、用于发送消息的发送模块12以及用于控制程序指令执行的处理模块13;
所述接收模块11用于获取用户设备UE的传输方案切换指示;所述UE的传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输;
所述处理模块13用于根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置。
本实施例提供的传输方案的确定装置,用于执行上述任一方法实施例中基站的技术方案,其实现原理和技术效果类似,在此不再赘述。
在上述实施例的基础上,若所述传输方案切换指示指示所述UE的传输方案由用户面传输切换至控制面传输,所述发送模块12用于向所述UE发送第一指示;所述第一指示用于指示所述UE将用户面传输使用的上下文信息挂起或者释放;
所述接收模块11还用于接收所述UE发送的上下文信息挂起完成消息。
在上述两个方案的基础上,所述发送模块12具体用于:
向所述UE发送无线资源控制RRC连接重配置消息;所述RRC连接重配置消息中携带所述第一指示;
或者,
向所述UE发送RRC连接挂起请求消息;所述RRC连接挂起请求消息中携带所述第一指示。
可选的,所述接收模块11具体用于:
接收核心网设备发送的初始上下文建立请求消息;所述初始上下文建立请求消息携带所述UE的所述传输方案切换指示;
或者,
接收核心网设备发送的UE上下文恢复消息;所述UE上下文恢复消息携带所述UE的所述传输方案切换指示;
或者,
接收所述核心网设备发送的下行非接入层传输消息,所述下行NAS传输消息携带所述UE的传输方案切换指示。
可选的,若所述传输方案切换指示指示所述UE的传输方案由控制面传输切换至用户面传输,所述发送模块12还用于向所述UE发送安全模式命令消息;
所述接收模块11还用于接收所述UE发送的安全模式完成消息;
所述发送模块12还用于向所述UE发送RRC连接,所述RRC连接重配置消息携带指示停止使用控制面传输的信息;
所述接收模块11还用于接收所述UE发送的RRC连接重配置完成消息。
可选的,所述接收模块11还用于接收所述UE发送的指示使用用户面传输的NAS消息;
所述发送模块12还用于将所述NAS消息转发给所述核心网设备;
所述接收模块11还用于接收核心网设备发送的所述UE的所述传输方案切换指示。
可选的,所述接收模块11具体用于:
接收所述UE发送的RRC连接建立完成消息,所述RRC连接建立完成 消息携带所述NAS消息;
则所述发送模块12还用于向所述核心网设备发送初始UE消息;所述初始UE消息携带所述NAS消息。
可选的,所述接收模块11还用于接收所述UE发送的所述UE与核心网设备协商的第一传输方案;
若所述传输方案的确定装置10自身支持的第二传输方案与所述第一传输方案不同,则所述发送模块12还用于将对所述UE进行传输方案切换指示。
可选的,所述接收模块11具体用于:
接收UE发送的RRC连接建立请求消息;所述RRC连接建立请求消息携带所述第一传输方案;
或者,
接收所述UE发送的RRC连接建立完成消息;所述RRC连接建立完成消息携带所述第一传输方案;
或者,
接收所述UE发送的RRC连接恢复消息;所述RRC连接恢复消息携带所述第一传输方案;
或者,
接收所述UE发送的RRC恢复完成消息;所述RRC恢复完成消息携带所述第一传输方案。
可选的,所述接收模块11还用于接收核心网设备发送的过载指示;
若所述过载指示指出所述核心网设备控制面传输过载,则所述处理模块13还用于生成所述UE的所述传输方案切换指示,所述传输方案切换指示指示将所述UE的传输方案由控制面传输切换为用户面传输。
本实施例提供的传输方案的确定装置,用于执行上述任一方法实施例中基站的技术方案,其实现原理和技术效果类似,在此不再赘述。
图11为本发明传输方案的确定装置实施例二的结构示意图,如图11所示,该传输方案的确定装置20,包括:
用于接收消息的接收模块21、用于发送消息的发送模块22以及用于控制程序指令执行的处理模块23;
所述接收模块21用于获取传输方案切换指示;所述传输方案切换指示用 于指示所述传输方案的确定装置的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输;
所述处理模块23用于根据所述传输方案切换指示与基站进行切换后的传输方案的配置。
本实施例提供的传输方案的确定装置,用于执行上述任一方法实施例中用户设备的技术方案,其实现原理和技术效果类似,在此不再赘述。
在上述方案的基础上,若所述传输方案切换指示指示所述传输方案的确定装置的传输方案由用户面传输切换至控制面传输,所述接收模块21还用于接收所述基站发送的第一指示;所述第一指示用于指示所述UE将用户面传输使用的上下文信息挂起或者释放;
所述处理模块23还用于将用户面传输使用的上下文信息挂起或者释放;
所述发送模块22用于向所述基站发送上下文信息挂起完成消息。
在上述实施例的基础上,所述接收模块21具体用于接收所述基站发送的无线资源控制RRC连接重配置消息;所述RRC连接重配置消息中携带所述第一指示。
可选的,若所述传输方案切换指示指示所述传输方案的确定装置的传输方案由控制面传输切换至用户面传输,则所述接收模块21还用于接收所述基站发送的安全模式命令消息;
所述处理模块23还用于建立安全模式;
所述发送模块22还用于向所述基站发送安全模式完成消息;
所述接收模块21还用于接收所述基站发送的RRC连接重配置消息;所述RRC连接重配置消息携带指示停止使用控制面传输的信息;
所述处理模块23还用于进行RRC连接配置;
所述发送模块22还用于向所述基站发送RRC连接重配置完成消息。
可选的,接收模块21还用于接收所述基站发送的所述传输方案切换指示;
或者,
所述发送模块22还用于向所述基站发送RRC连接建立请求消息;
所述接收模块21还用于接收所述基站发送的RRC连接拒绝消息,并根据所述RRC连接拒绝消息,生成所述传输方案切换指示。
或者,
所述发送模块22还用于向所述基站发送RRC连接建立完成消息;
所述接收模块21还用于接收所述基站发送的RRC连接释放消息,并根据所述RRC连接释放消息,生成所述传输方案切换指示。
本实施例提供的传输方案的确定装置,用于执行上述任一方法实施例中用户设备的技术方案,其实现原理和技术效果类似,在此不再赘述。
图12为本发明传输方案的确定装置实施例三的结构示意图,如图12所示,该传输方案的确定装置30,包括:用于接收消息的接收模块31、用于发送消息的发送模块32以及用于控制程序指令执行的处理模块33;
所述发送模块32用于向基站发送第一消息;所述第一消息用于使所述基站确定用户设备UE的传输方案切换指示;所述传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输;
所述接收模块31用于接收基站返回的所述UE的传输方案切换完成消息。
可选的,所述发送模块32具体用于:
向所述基站发送初始上下文建立请求消息;所述第一消息为所述初始上下文建立请求消息;
或者,
向所述基站发送下行非接入层NAS传输消息,所述第一消息为所述下行NAS传输消息;所述下行NAS传输消息携带所述UE的传输方案切换指示。
可选的,所述接收模块31具体用于:
接收所述基站发送的初始UE消息;所述初始UE消息包括所述UE的缓存状态报告BSR、数据量指示DVI或者所述UE的传输方案切换指示;
或者,
接收所述基站发送的上行NAS传输消息;所述上行NAS传输消息包括所述UE的BSR、DVI或者所述UE的传输方案切换指示。
可选的,所述发送模块32发送的所述第一信息还包括过载指示;所述过载指示用于指出所述传输方案的确定装置控制面传输过载。
本实施例提供的传输方案的确定装置,用于执行上述任一方法实施例中核心网设备的技术方案,其实现原理和技术效果类似,在此不再赘述。
上述图10所示的传输方案的确定装置可以被具体实现为一种基站,其中该基站包括存储有程序指令的存储器、用于控制程序指令执行的处理器、用于接收消息的接收器和用于发送消息的发送器;即接收模块可以被实现为接收器、发送模块可以被具体实现为发送器,处理模块可以被实现为处理器。
上述图11所示的传输方案的确定装置可以被具体实现为一种用户设备,其中该用户设备包括存储有程序指令的存储器、用于控制程序指令执行的处理器、用于接收消息的接收器和用于发送消息的发送器;即接收模块可以被实现为接收器、发送模块可以被具体实现为发送器,处理模块可以被实现为处理器。
上述图12所示的传输方案的确定装置可以被具体实现为一种核心网设备,例如MME,其中该核心网设备包括存储有程序指令的存储器、用于控制程序指令执行的处理器、用于接收消息的接收器和用于发送消息的发送器;即接收模块可以被实现为接收器、发送模块可以被具体实现为发送器,处理模块可以被实现为处理器。
在上述用户设备、基站或者核心网设备的实施例中,应理解,处理器可以是中央处理单元(英文:Central Processing Unit,简称:CPU),还可以是其他通用处理器、数字信号处理器(英文:Digital Signal Processor,简称:DSP)、专用集成电路(英文:Application Specific Integrated Circuit,简称:ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。可选的,用户设备还可以包含用户接口,显示器(例如,触摸屏、LCD、CRT、全息成像(Holographic)或者投影(Projector)等),键盘或者点击设备(例如,鼠标,轨迹球(trackball),触感板或者触摸屏等)。
接收器和发送器分别可以具体包括发射电路和接收电路,以及其载体,以允许用户设备和基站或者无线网络路由器之间进行数据发射和接收。发射电路和接收电路可以耦合到天线中来实现。
在一些实施方式中,存储器存储了如下的元素,可执行模块或者数据结构,或者他们的子集,或者他们的扩展集:操作***,包含各种***程序,例如框架层、核心库层、驱动层等,用于实现各种基础业务以及处理基于硬件的任务;可选的,还可以包括应用程序模块,包含各种应用程序,例如图1 所示的桌面(launcher)、媒体播放器(Media Player)、浏览器(Browser)等,用于实现各种应用业务。
本领域普通技术人员可以理解:实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时,执行包括上述各方法实施例的步骤;而前述的存储介质包括:只读存储器(英文:read-only memory,缩写:ROM)、RAM、快闪存储器、硬盘、固态硬盘、磁带(英文:magnetic tape)、软盘(英文:floppy disk)、光盘(英文:optical disc)及其任意组合。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (38)

  1. 一种传输方案的确定方法,其特征在于,包括:
    基站获取用户设备UE的传输方案切换指示;所述UE的传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输;
    所述基站根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置。
  2. 根据权利要求1所述的方法,其特征在于,若所述传输方案切换指示指示所述UE的传输方案由用户面传输切换至控制面传输,所述基站根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置,包括:
    所述基站向所述UE发送第一指示;所述第一指示用于指示所述UE将用户面传输使用的上下文信息挂起或者释放;
    所述基站接收所述UE发送的上下文信息挂起完成消息。
  3. 根据权利要求2所述的方法,其特征在于,所述基站向所述UE发送第一指示,包括:
    所述基站向所述UE发送无线资源控制RRC连接重配置消息;所述RRC连接重配置消息中携带所述第一指示;
    或者,
    所述基站向所述UE发送RRC连接挂起请求消息;所述RRC连接挂起请求消息中携带所述第一指示。
  4. 根据权利要求2或3所述的方法,其特征在于,所述基站获取用户设备UE的传输方案切换指示,包括:
    所述基站接收核心网设备发送的初始上下文建立请求消息;所述初始上下文建立请求消息携带所述UE的所述传输方案切换指示;
    或者,
    所述基站接收核心网设备发送的UE上下文恢复消息;所述UE上下文恢复消息携带所述UE的所述传输方案切换指示;
    或者,
    所述基站接收所述核心网设备发送的下行非接入层传输消息,所述下行NAS传输消息携带所述UE的传输方案切换指示。
  5. 根据权利要求1所述的方法,其特征在于,若所述传输方案切换指示指示所述UE的传输方案由控制面传输切换至用户面传输,所述基站根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置,包括:
    所述基站向所述UE发送安全模式命令消息;
    所述基站接收所述UE发送的安全模式完成消息;
    所述基站向所述UE发送RRC连接重配置消息,所述RRC连接重配置消息携带指示停止使用控制面传输的信息;
    所述基站接收所述UE发送的RRC连接重配置完成消息。
  6. 根据权利要求5所述的方法,其特征在于,所述基站获取用户设备UE的传输方案切换指示,包括:
    所述基站接收所述UE发送的指示使用用户面传输的NAS消息;
    所述基站将所述NAS消息转发给所述核心网设备;
    所述基站接收核心网设备发送的所述UE的所述传输方案切换指示。
  7. 根据权利要求6所述的方法,其特征在于,所述基站接收所述UE发送的指示使用用户面传输的NAS消息,包括:
    所述基站接收所述UE发送的RRC连接建立完成消息,所述RRC连接建立完成消息携带所述NAS消息;
    则所述基站将所述NAS消息转发给所述核心网设备,包括:
    所述基站向所述核心网设备发送初始UE消息;所述初始UE消息携带所述NAS消息。
  8. 根据权利要求1所述的方法,其特征在于,所述基站获取用户设备UE的传输方案切换指示,包括:
    所述基站接收所述UE发送的所述UE与核心网设备协商的第一传输方案;
    若所述基站自身支持的第二传输方案与所述第一传输方案不同,则所述基站将对所述UE进行传输方案切换指示。
  9. 根据权利要求8所述的方法,其特征在于,所述基站接收所述UE发送的所述UE与核心网协商的第一传输方案,包括:
    所述基站接收UE发送的RRC连接建立请求消息;所述RRC连接建立请求消息携带所述第一传输方案;
    或者,
    所述基站接收所述UE发送的RRC连接建立完成消息;所述RRC连接建立完成消息携带所述第一传输方案;
    或者,
    所述基站接收所述UE发送的RRC连接恢复消息;所述RRC连接恢复消息携带所述第一传输方案;
    或者,
    所述基站接收所述UE发送的RRC恢复完成消息;所述RRC恢复完成消息携带所述第一传输方案。
  10. 根据权利要求1所述的方法,其特征在于,所述基站获取用户设备UE的传输方案切换指示,包括:
    所述基站接收核心网设备发送的过载指示;
    若所述过载指示指出所述核心网设备控制面传输过载,则所述基站生成所述UE的所述传输方案切换指示,所述传输方案切换指示指示将所述UE的传输方案由控制面传输切换为用户面传输。
  11. 一种传输方案的确定方法,其特征在于,包括:
    用户设备UE获取传输方案切换指示;所述传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输;
    所述UE根据所述传输方案切换指示与基站进行切换后的传输方案的配置。
  12. 根据权利要求11所述的方法,其特征在于,若所述传输方案切换指示指示所述UE的传输方案由用户面传输切换至控制面传输,则所述UE根据所述传输方案切换指示与基站进行切换后的传输方案的配置,包括:
    所述UE接收所述基站发送的第一指示;所述第一指示用于指示所述UE将用户面传输使用的上下文信息挂起或者释放;
    所述UE将用户面传输使用的上下文信息挂起或者释放;
    所述UE向所述基站发送上下文信息挂起完成消息。
  13. 根据权利要求12所述的方法,其特征在于,所述UE接收所述基站发送的第一指示,包括:
    所述UE接收所述基站发送的无线资源控制RRC连接重配置消息;所述RRC连接重配置消息中携带所述第一指示。
  14. 根据权利要求11所述的方法,其特征在于,若所述传输方案切换指示指示所述UE的传输方案由控制面传输切换至用户面传输,则所述UE根据所述传输方案切换指示与基站进行切换后的传输方案的配置,包括:
    所述UE接收所述基站发送的安全模式命令消息;
    所述UE建立安全模式,并向所述基站发送安全模式完成消息;
    所述UE接收所述基站发送的RRC连接重配置消息;所述RRC连接重配置消息携带指示停止使用控制面传输的信息;
    所述UE进行RRC连接配置,并向所述基站发送RRC连接重配置完成消息。
  15. 根据权利要求11至14任一项所述的方法,其特征在于,所述用户设备UE获取传输方案切换指示,包括:
    所述UE接收所述基站发送的所述传输方案切换指示;
    或者,
    所述UE向所述基站发送RRC连接建立请求消息;
    所述UE接收所述基站发送的RRC连接拒绝消息,并根据所述RRC连接拒绝消息,生成所述传输方案切换指示。
    或者,
    所述UE向所述基站发送RRC连接建立完成消息;
    所述UE接收所述基站发送的RRC连接释放消息,并根据所述RRC连接释放消息,生成所述传输方案切换指示。
  16. 一种传输方案的确定方法,其特征在于,包括:
    核心网设备向基站发送第一消息;所述第一消息用于使所述基站确定用户设备UE的传输方案切换指示;所述传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输;
    核心网设备接收基站返回的所述UE的传输方案切换完成消息。
  17. 根据权利要求16所述的方法,其特征在于,所述核心网设备向基站发送第一消息,包括:
    所述核心网设备向所述基站发送初始上下文建立请求消息;所述第一消 息为所述初始上下文建立请求消息;
    或者,
    所述核心网设备向所述基站发送下行非接入层NAS传输消息,所述第一消息为所述下行NAS传输消息;所述下行NAS传输消息携带所述UE的传输方案切换指示。
  18. 根据权利要求16后或17所述的方法,其特征在于,所述核心网设备向所述基站发送第一消息之前,所述方法还包括:
    所述核心网设备接收所述基站发送的初始UE消息;所述初始UE消息包括所述UE的缓存状态报告BSR、数据量指示DVI或者所述UE的传输方案切换指示;
    或者,
    所述核心网设备接收所述基站发送的上行NAS传输消息;所述上行NAS传输消息包括所述UE的BSR、DVI或者所述UE的传输方案切换指示。
  19. 根据权利要求16所述的方法,其特征在于,所述第一信息还包括过载指示;所述过载指示用于指出所述核心网设备控制面传输过载。
  20. 一种传输方案的确定装置,其特征在于,包括:
    用于接收消息的接收模块、用于发送消息的发送模块以及用于控制程序指令执行的处理模块;
    所述接收模块用于获取用户设备UE的传输方案切换指示;所述UE的传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输;
    所述处理模块用于根据所述传输方案切换指示与所述UE进行切换后的传输方案的配置。
  21. 根据权利要求20所述的装置,其特征在于,若所述传输方案切换指示指示所述UE的传输方案由用户面传输切换至控制面传输,所述发送模块用于向所述UE发送第一指示;所述第一指示用于指示所述UE将用户面传输使用的上下文信息挂起或者释放;
    所述接收模块还用于接收所述UE发送的上下文信息挂起完成消息。
  22. 根据权利要求21所述的装置,其特征在于,所述发送模块具体用于:
    向所述UE发送无线资源控制RRC连接重配置消息;所述RRC连接重 配置消息中携带所述第一指示;
    或者,
    向所述UE发送RRC连接挂起请求消息;所述RRC连接挂起请求消息中携带所述第一指示。
  23. 根据权利要求21或22所述的装置,其特征在于,所述接收模块具体用于:
    接收核心网设备发送的初始上下文建立请求消息;所述初始上下文建立请求消息携带所述UE的所述传输方案切换指示;
    或者,
    接收核心网设备发送的UE上下文恢复消息;所述UE上下文恢复消息携带所述UE的所述传输方案切换指示;
    或者,
    接收所述核心网设备发送的下行非接入层传输消息,所述下行NAS传输消息携带所述UE的传输方案切换指示。
  24. 根据权利要求21所述的装置,其特征在于,若所述传输方案切换指示指示所述UE的传输方案由控制面传输切换至用户面传输,所述发送模块还用于向所述UE发送安全模式命令消息;
    所述接收模块还用于接收所述UE发送的安全模式完成消息;
    所述发送模块还用于向所述UE发送RRC连接重配置消息,所述RRC连接重配置消息携带指示停止使用控制面传输的信息;
    所述接收模块还用于接收所述UE发送的RRC连接重配置完成消息。
  25. 根据权利要求24所述的装置,其特征在于,所述接收模块还用于接收所述UE发送的指示使用用户面传输的NAS消息;
    所述发送模块还用于将所述NAS消息转发给所述核心网设备;
    所述接收模块还用于接收核心网设备发送的所述UE的所述传输方案切换指示。
  26. 根据权利要求25所述的装置,其特征在于,所述接收模块具体用于:
    接收所述UE发送的RRC连接建立完成消息,所述RRC连接建立完成消息携带所述NAS消息;
    则所述发送模块还用于向所述核心网设备发送初始UE消息;所述初始 UE消息携带所述NAS消息。
  27. 根据权利要求21所述的装置,其特征在于,所述接收模块还用于接收所述UE发送的所述UE与核心网设备协商的第一传输方案;
    若所述基站自身支持的第二传输方案与所述第一传输方案不同,则所述发送模块还用于将对所述UE进行传输方案切换指示。
  28. 根据权利要求27所述的装置,其特征在于,所述接收模块具体用于:
    接收UE发送的RRC连接建立请求消息;所述RRC连接建立请求消息携带所述第一传输方案;
    或者,
    接收所述UE发送的RRC连接建立完成消息;所述RRC连接建立完成消息携带所述第一传输方案;
    或者,
    接收所述UE发送的RRC连接恢复消息;所述RRC连接恢复消息携带所述第一传输方案;
    或者,
    接收所述UE发送的RRC恢复完成消息;所述RRC恢复完成消息携带所述第一传输方案。
  29. 根据权利要求20所述的装置,其特征在于,所述接收模块还用于接收核心网设备发送的过载指示;
    若所述过载指示指出所述核心网设备控制面传输过载,则所述处理模块还用于生成所述UE的所述传输方案切换指示,所述传输方案切换指示指示将所述UE的传输方案由控制面传输切换为用户面传输。
  30. 一种传输方案的确定装置,其特征在于,包括:
    用于接收消息的接收模块、用于发送消息的发送模块以及用于控制程序指令执行的处理模块;
    所述接收模块用于获取传输方案切换指示;所述传输方案切换指示用于指示所述传输方案的确定装置的传输方案由用户面传输切换至控制面传输或者控制面传输切换至用户面传输;
    所述处理模块用于根据所述传输方案切换指示与基站进行切换后的传输方案的配置。
  31. 根据权利要求30所述的装置,其特征在于,若所述传输方案切换指示指示所述传输方案的确定装置的传输方案由用户面传输切换至控制面传输,则所述接收模块用于接收所述基站发送的第一指示;所述第一指示用于指示所述UE将用户面传输使用的上下文信息挂起或者释放;
    所述处理模块还用于将用户面传输使用的上下文信息挂起或者释放;
    所述发送模块用于向所述基站发送上下文信息挂起完成消息。
  32. 根据权利要求31所述的装置,其特征在于,所述接收模块具体用于接收所述基站发送的无线资源控制RRC连接重配置消息;所述RRC连接重配置消息中携带所述第一指示。
  33. 根据权利要求30所述的装置,其特征在于,若所述传输方案切换指示指示所述传输方案的确定装置的传输方案由控制面传输切换至用户面传输,则所述接收模块还用于接收所述基站发送的安全模式命令消息;
    所述处理模块还用于建立安全模式;
    所述发送模块还用于向所述基站发送安全模式完成消息;
    所述接收模块还用于接收所述基站发送的RRC连接重配置消息;所述RRC连接重配置消息携带指示停止使用控制面传输的信息;
    所述处理模块还用于进行RRC连接配置;
    所述发送模块还用于向所述基站发送RRC连接重配置完成消息。
  34. 根据权利要求30至33任一项所述的装置,其特征在于,所述接收模块还用于接收所述基站发送的所述传输方案切换指示;
    或者,
    所述发送模块还用于向所述基站发送RRC连接建立请求消息;
    所述接收模块还用于接收所述基站发送的RRC连接拒绝消息,并根据所述RRC连接拒绝消息,生成所述传输方案切换指示。
    或者,
    所述发送模块还用于向所述基站发送RRC连接建立完成消息;
    所述接收模块还用于接收所述基站发送的RRC连接释放消息,并根据所述RRC连接释放消息,生成所述传输方案切换指示。
  35. 一种传输方案的确定装置,其特征在于,包括:
    用于接收消息的接收模块、用于发送消息的发送模块以及用于控制程序 指令执行的处理模块;
    所述发送模块用于向基站发送第一消息;所述第一消息用于使所述基站确定用户设备UE的传输方案切换指示;所述传输方案切换指示用于指示所述UE的传输方案由用户面传输切换至控制面传输;
    所述接收模块用于接收基站返回的所述UE的传输方案切换完成消息。
  36. 根据权利要求35所述的装置,其特征在于,所述发送模块具体用于:
    向所述基站发送初始上下文建立请求消息;所述第一消息为所述初始上下文建立请求消息;
    或者,
    向所述基站发送下行非接入层NAS传输消息,所述第一消息为所述下行NAS传输消息;所述下行NAS传输消息携带所述UE的传输方案切换指示。
  37. 根据权利要求35后或36所述的装置,其特征在于,所述接收模块具体用于:
    接收所述基站发送的初始UE消息;所述初始UE消息包括所述UE的缓存状态报告BSR、数据量指示DVI或者所述UE的传输方案切换指示;
    或者,
    接收所述基站发送的上行NAS传输消息;所述上行NAS传输消息包括所述UE的BSR、DVI或者所述UE的传输方案切换指示。
  38. 根据权利要求35所述的装置,其特征在于,所述发送模块发送的所述第一信息还包括过载指示;所述过载指示用于指出所述传输方案的确定装置控制面传输过载。
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