WO2018082623A1 - 一种连接重建立方法及装置、电子设备、计算机存储介质 - Google Patents

一种连接重建立方法及装置、电子设备、计算机存储介质 Download PDF

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Publication number
WO2018082623A1
WO2018082623A1 PCT/CN2017/109162 CN2017109162W WO2018082623A1 WO 2018082623 A1 WO2018082623 A1 WO 2018082623A1 CN 2017109162 W CN2017109162 W CN 2017109162W WO 2018082623 A1 WO2018082623 A1 WO 2018082623A1
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WIPO (PCT)
Prior art keywords
message
information
terminal
establishment
connection
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PCT/CN2017/109162
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English (en)
French (fr)
Inventor
陆婷
余媛芳
高音
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中兴通讯股份有限公司
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Publication of WO2018082623A1 publication Critical patent/WO2018082623A1/zh

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    • 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
    • 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

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a connection re-establishment method and apparatus, an electronic device, and a computer storage medium in a Control Plane (CP) optimization manner.
  • CP Control Plane
  • M2M (Machine to Machine) communication is an important subject of the fifth generation of mobile communication technology (5G), and an important application field for wireless communication in the future.
  • the sub-project of the narrowband Internet of Things (NB-IoT, NarowBand-Internet of Things) is proposed for the terminal characteristics such as low cost, low power consumption, low mobility, and low throughput, that is, in the 200 khz band.
  • the NB-IoT low-cost user equipment UE, User Equipment
  • UE User Equipment
  • Control plane optimization mode (hereinafter referred to as CP optimization mode): Data radio bearer (DRB, Data Radio Bearer) will not be established between the terminal and the network, and the AS security context will not be established. The data is encapsulated into NAS PDU attached. Transmission in control plane signaling. The effect of saving signaling in this way is obvious, but the length of the data packet transmitted at one time is limited. For a relatively large data packet, it needs to be divided into multiple small packets to be sent. In the case of poor coverage, the packet loss problem is easily caused. Receiving It is difficult for a party to receive a complete packet.
  • DRB Data Radio Bearer
  • User Plane (UP) optimization mode The terminal establishes a complete connection with the network, and uses DRB to transmit data. After the data transmission is completed, the terminal and the network side save by suspending the process.
  • the bearer information context, the AS security context, etc. when the data is sent again, the two parties restore the previously saved context through the recovery process, and continue to use the DRB bearer to transmit data. This method is not much different from the existing process, and there is no significant limitation on the length of the data packet, but the effect of saving signaling is limited.
  • the existing research allows the terminal using the CP optimized mode to use the re-establishment procedure of the air interface, for example, the terminal detects the wireless link under the old evolved base station (eNB). Failure (RLF, Radio Link Failure), the terminal will attempt to initiate re-establishment of the air interface under the new eNB. After receiving the re-establishment request of the terminal, the new eNB needs to initiate a context fetch procedure to the eNB (hereinafter referred to as the old eNB) that has failed to report the radio link, so as to obtain the context of the terminal from the old eNB. The entire air interface re-establishment process and the switching of the network side S1 path are completed. NAS data retransmissions should also be supported if needed.
  • RLF Radio Link Failure
  • the terminal using the CP optimization mode cannot calculate and report the ShortMAC-I information to the new eNB according to the access layer security algorithm and the key, and the new eNB cannot be in the RLF.
  • the ShortDIC-I is included in the INDICATION message, and other schemes need to be considered to solve the PCI confusion problem on the old eNB.
  • the RETRIEVE UE CONTEXT REQUEST message includes the recovery identifier acquired by the new eNB from the air interface, and also includes ShortMAC-I information, and in the CP mode air interface re-establishment procedure, the new eNB cannot Obtain the recovery identifier and ShortMAC-I based on the access layer security mechanism (access layer security algorithm, access layer security key, etc.) Information, so in this way, other schemes need to be considered to solve the problem of the identification of the base station and the terminal by the old eNB, including the PCI confusion problem.
  • the recovery identifier can be carried in the re-establishment request message, but how to solve the problem caused by the ShortMAC-I deletion needs further research.
  • the terminal uses NAS signaling to transmit data through the air interface's Signaling Radio Bearer (SRB), the E-RAB bearer is not established with the network side, and the AS is not supported by the CP optimization mode.
  • SRB Signaling Radio Bearer
  • an embodiment of the present disclosure provides a connection re-establishment method and apparatus, an electronic device, and a computer storage medium.
  • connection re-establishment method comprising:
  • the terminal sends a first message to the base station, where the first message is used to request re-establishment of the wireless connection;
  • the first message, the second message, and the third message satisfy at least one of the following:
  • the first message includes at least one of the following: temporary mobile subscriber identity S-TMSI information, cell identity information, evolved cell global identity information, preset length S-TMSI information, preset length of cell identity information, cell wireless Network temporary identifier C-RNTI, physical cell identifier PCI, The short medium access control short MAC-I;
  • the second message includes: indication information indicating that the terminal reports S-TMSI information or cell identification information;
  • the third message includes at least one of the following: S-TMSI information, cell identification information, The evolved cell global identifier information, the preset length S-TMSI information, and the preset length of the cell identifier information.
  • the terminal After receiving the second message, the terminal sends a third message to the base station, and the terminal determines whether the indication information is carried in the second message or according to the value of the indication information. Whether the at least one of the following is carried in the third message: the S-TMSI information, the cell identifier information, the evolved cell global identifier information, the preset length S-TMSI information, and the preset length of the cell identifier information.
  • the preset length of S-TMSI information or cell identity information includes partial S-TMSI information or partial cell identity information of a preset length.
  • the manner in which the terminal includes the identification information in the first message includes at least one of the following:
  • the terminal constructs the re-establishment identifier by using the S-TMSI information and the physical cell identifier information;
  • the terminal uses the C-RNTI information and the cell identity information to construct a re-establishment identifier
  • the terminal uses the C-RNTI information, the PCI information, and the short-MAC-I information to construct a re-establishment identifier.
  • the short MAC-I information is configured in one of the following manners: a preset length of S-TMSI information, and a preset length of cell identifier information.
  • connection re-establishment method comprising:
  • the fourth network element After the first network element triggers the reestablishment of the wireless connection, the fourth network element sends a fourth message to the second network element.
  • the fourth message is used to request to acquire a terminal context, or is used to notify the radio link to fail;
  • the first message, the second message, and the third message satisfy at least one of the following:
  • the first message includes at least one of the following: S-TMSI information, cell identity information, evolved cell global identity information, preset length S-TMSI information, preset length cell identity information, and cell wireless network temporary Identifying a C-RNTI, a physical cell identifier PCI, and a short MAC-I;
  • the second message includes: indication information indicating that the terminal reports S-TMSI information or cell identity information;
  • the third message includes at least one of the following: S-TMSI Information, cell identification information, evolved cell global identification information, preset length S-TMSI information, and preset length of cell identification information.
  • the method further includes:
  • the first network element After receiving the third message sent by the terminal, the first network element sends the fourth message to the second network element.
  • the method further includes:
  • the first network element constructs a fourth message according to the first message or the third message, where the fourth message includes at least one of the following: a cell identifier, a terminal identifier, and security information.
  • the fourth message includes at least one of the following: a new message, an existing message; the existing message is one of the following: a radio link failure indication message, a recovery UE context request message.
  • the method further includes:
  • the first network element indicates, by using the second message, whether the terminal includes the identification information in the third message in the third message.
  • the first network element is a base station to which the terminal requests to reestablish the wireless connection
  • the second network element is a base station where the terminal fails to generate a wireless link
  • connection re-establishment method comprising:
  • the first network element sends a fourth message to the second network element, where the fourth message is used to request to acquire the terminal context, or is used to notify the radio link to fail;
  • the fifth message includes at least the following information: Old eNB UE X2AP ID, UE context information.
  • the fifth message is one of the following: a new message, an existing message, and the existing message is one of the following: a handover request message, and a recovery UE context request message.
  • the fifth message When the fifth message is the existing message, the fifth message includes indication information for indicating whether the mandatory field is valid.
  • the first network element When the fifth message is a handover request message, the first network element further sends a sixth message, where the sixth message includes at least the following information: Old eNB UE X2AP ID, New eNB UE X2AP ID.
  • the sixth message is one of the following: a new message, an existing message, and the existing message is: a handover request acknowledgement message.
  • the sixth message When the sixth message is the existing message, the sixth message includes indication information for indicating whether the mandatory field is valid.
  • connection re-establishment method comprising:
  • the first network element After acquiring the terminal context from the second network element, the first network element sends a seventh message to the third network element, where the seventh message is used to request to establish an interface path of the first network element to the third network element;
  • the seventh message includes at least the following information: the eNB UE S1AP ID, the Source MME UE S1AP ID, when the terminal adopts the control plane optimization mode.
  • the method further includes:
  • an eighth message sent by the third network element where the eighth message is the seventh
  • the response message of the message, wherein the eighth message includes at least one of the following: an MME UE S1AP ID, an eNB UE S1AP ID.
  • the seventh message is one of the following: a new message, a first existing message, and a second existing message; the first existing message is: a path selection request message, and the second existing message is: initial UE message.
  • the eighth message is one of the following: a new message, a first existing message, and a second existing message; the first existing message is: a path selection request acknowledgement message, and the second existing message is: Establish a connection indication message.
  • the seventh message When the seventh message is the first existing message or the second existing message, the seventh message includes indication information indicating whether the mandatory field is valid.
  • the eighth message When the eighth message is the existing message, the eighth message includes indication information indicating whether the mandatory field is valid.
  • the seventh message is an initial UE message, extending a radio setup cause value field in the seventh message, so that the field includes an air interface radio re-establishment cause; or, when the seventh message is a new message When the new message is included in the new message, the air interface wireless re-establishment cause is included.
  • connection re-establishment device comprising:
  • a communication unit configured to send a first message to the base station, where the first message is used to request re-establishment of the wireless connection; to receive a second message sent by the base station, where the second message is a response message of the first message; Sending a third message to the base station, where the third message is used to indicate that the wireless connection re-establishment is complete; the first message, the second message, and the third message satisfy at least one of the following:
  • the first message includes at least one of the following: temporary mobile subscriber identity S-TMSI information, cell identity information, evolved cell global identity information, preset length S-TMSI information, preset length of cell identity information, cell wireless Network temporary identifier C-RNTI, physical cell identifier PCI,
  • the second message includes: indication information indicating that the terminal reports S-TMSI information or cell identity information;
  • the third message includes at least one of the following: S-TMSI information, cell identity information, and evolved cell global Identification information, S-TMSI information of a preset length, and cell identification information of a preset length.
  • the communication unit is further configured to: after receiving the second message, send a third message to the base station, and the terminal according to whether the indication information is carried in the second message or according to the indication information
  • the value of the third message carries at least one of the following: S-TMSI information, cell identity information, evolved cell global identifier information, preset length S-TMSI information, and preset length of cell identity information. .
  • the preset length of S-TMSI information or cell identity information includes partial S-TMSI information or partial cell identity information of a preset length.
  • the manner in which the terminal includes the identification information in the first message includes at least one of the following:
  • the terminal constructs the re-establishment identifier by using the S-TMSI information and the physical cell identifier information;
  • the terminal uses the C-RNTI information and the cell identity information to construct a re-establishment identifier
  • the terminal uses the C-RNTI information, the PCI information, and the short-MAC-I information to construct a re-establishment identifier.
  • the short MAC-I information is configured in one of the following manners: a preset length of S-TMSI information, and a preset length of cell identifier information.
  • connection re-establishment device comprising:
  • a communication unit configured to receive a first message sent by the terminal, where the first message is used to request reestablishment of the wireless connection; to send a second message to the terminal, where the second message is a response message of the first message; Receiving a third message of the terminal, where the third message is used to indicate that the wireless connection re-establishment is completed; after triggering the re-establishment of the wireless connection, sending a fourth message to the second network element, where the fourth message is used for requesting Obtaining a terminal context, or for notifying that the radio link fails; the first message, the second message, and the third message satisfy at least one of the following:
  • the first message includes at least one of the following: S-TMSI information, cell identity information, The evolved cell global identifier information, the preset length S-TMSI information, the preset length of the cell identifier information, the cell radio network temporary identifier C-RNTI, the physical cell identifier PCI, the shortMAC-I;
  • the second message includes: an indication The terminal reports the indication information of the S-TMSI information or the cell identity information;
  • the third message includes at least one of the following: S-TMSI information, cell identity information, evolved cell global identifier information, preset length S-TMSI information, Pre-length cell identification information.
  • the communication unit is configured to send the fourth message to the second network element after receiving the third message sent by the terminal.
  • the device also includes:
  • a determining unit configured to determine, according to the first message or the third message, a destination network element to be sent by the fourth message, where the destination network element is one or more second network elements;
  • a constructing unit configured to construct a fourth message according to the first message or the third message, where the fourth message includes at least one of the following: a cell identifier, a terminal identifier, and security information.
  • the fourth message includes at least one of the following: a new message, an existing message; the existing message is one of the following: a radio link failure indication message, a recovery UE context request message.
  • the device also includes:
  • the indicating unit is configured to indicate, by using the second message, whether the terminal includes the identification information in the third message in the third message.
  • the device is disposed in a first network element, where the first network element sends a base station to which the terminal requests reconnection of the wireless connection, and the second network element is a base station in which the terminal fails to generate a radio link.
  • connection re-establishment device comprising:
  • a communication unit configured to receive a first message sent by the terminal, where the first message is used to request re-establishment of the wireless connection; the fourth message is sent to the second network element, where the fourth message is used to request to acquire the terminal context, or The method is configured to notify the wireless link that the communication fails; and receive the fifth message sent by the second network element.
  • the fifth response message includes at least the following Information: Old eNB UE X2AP ID, UE context information.
  • the fifth message is one of the following: a new message, an existing message, and the existing message is one of the following: a handover request message, and a recovery UE context request message.
  • the fifth message When the fifth message is the existing message, the fifth message includes indication information for indicating whether the mandatory field is valid.
  • the first network element When the fifth message is a handover request message, the first network element further sends a sixth message, where the sixth message includes at least the following information: Old eNB UE X2AP ID, New eNB UE X2AP ID.
  • the sixth message is one of the following: a new message, an existing message, and the existing message is: a handover request acknowledgement message.
  • the sixth message When the sixth message is the existing message, the sixth message includes indication information for indicating whether the mandatory field is valid.
  • connection re-establishment device comprising:
  • a communication unit configured to: after acquiring the terminal context from the second network element, send a seventh message to the third network element, where the seventh message is used to request to establish an interface path of the first network element to the third network element;
  • the seventh message includes at least the following information: eNB UE S1AP ID, Source MME UE S1AP ID.
  • the communication unit is further configured to receive an eighth message sent by the third network element, where the eighth message is a response message of the seventh message, where the eighth message includes at least one of the following: MME UE S1AP ID, eNB UE S1AP ID.
  • the seventh message is one of the following: a new message, a first existing message, and a second existing message; the first existing message is: a path selection request message, and the second existing message is: initial UE message.
  • the eighth message is one of the following: a new message, a first existing message, and a second existing message; the first existing message is: a path selection request acknowledgement message, and the second existing message is: Establish a connection indication message.
  • the seventh message When the seventh message is the first existing message or the second existing message, the seventh message includes indication information indicating whether the mandatory field is valid.
  • the eighth message When the eighth message is the existing message, the eighth message includes indication information indicating whether the mandatory field is valid.
  • the seventh message is an initial UE message, extending a radio setup cause value field in the seventh message, so that the field includes an air interface radio re-establishment cause; or, when the seventh message is a new message When the new message is included in the new message, the air interface wireless re-establishment cause is included.
  • An electronic device comprising a processor and a memory storing the processor-executable instructions, the processor executing the connection re-establishment method step when the instructions are executed by a processor.
  • a computer storage medium storing a computer program configured to perform the connection re-establishment method described above.
  • the terminal sends a first message to the base station, where the first message is used to request re-establishment of the wireless connection, and the terminal receives the second message sent by the base station, where the second message is a response message of the first message; the terminal sends a third message to the base station, where the third message is used to indicate that the wireless connection re-establishment is completed; the first message, the second message, and the third message are satisfied.
  • the first message includes at least one of the following: a temporary mobile subscriber identity S-TMSI information, cell identity information, evolved cell global identity information, preset length S-TMSI information, a preset length of the cell
  • the identifier information the cell radio network temporary identifier C-RNTI, the physical cell identifier PCI, the short MAC-I
  • the second message includes: indication information indicating that the terminal reports the S-TMSI information or the cell identifier information
  • the third message includes the following At least one of the following: S-TMSI information, cell identity information, evolved cell global identity information, preset length S-TMSI information, and preset length of cell identity information.
  • the first network element Receiving, by the first network element, a first message sent by the terminal, where the first message is used to request re-establishment of the wireless connection; and the first network element is to the end Sending a second message, where the second message is a response message of the first message; the first network element receives a third message of the terminal, and the third message is used to indicate that the wireless connection is re-established
  • the fourth network message is sent to the second network element, where the fourth message is used to request to acquire the terminal context, or is used to notify the wireless link that the failure is successful.
  • FIG. 1 is a schematic flowchart 1 of a connection re-establishment method according to an embodiment of the present disclosure
  • connection re-establishment method is a second schematic flowchart of a connection re-establishment method according to an embodiment of the present disclosure
  • FIG. 3 is a schematic flowchart 3 of a method for establishing a connection re-establishment according to an embodiment of the present disclosure
  • connection re-establishment method is a schematic flowchart 4 of a connection re-establishment method according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of Embodiment 1 of the present disclosure.
  • Figure 6 is a schematic diagram of Embodiment 2 of the present disclosure.
  • Figure 7 is a schematic diagram of Embodiment 3 of the present disclosure.
  • connection re-establishment device 8 is a schematic structural diagram 1 of a connection re-establishment device according to an embodiment of the present disclosure
  • FIG. 9 is a second structural diagram of a connection re-establishment device according to an embodiment of the present disclosure.
  • connection re-establishment device 10 is a third structural diagram of a connection re-establishment device according to an embodiment of the present disclosure.
  • connection re-establishment device according to an embodiment of the present disclosure
  • FIG. 12 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
  • the context acquisition process between the eNB and the old eNB can be considered in two different ways:
  • the first mode in the existing network side process, when the new eNB receives the air interface re-establishment request initiated by the terminal due to the radio link failure, the new eNB sends a radio link failure indication (RLF INDICATION) to the old eNB.
  • the message, the RLF INDICATION message includes the terminal identifier and the cell acquired by the re-establishment identification information group ⁇ C-RNTI (16bits), PCI (9bits), shortMAC-I (16bits) ⁇ carried by the new eNB through the air interface re-establishment request message.
  • an identifier information unit wherein the short MAC-I is calculated by the terminal according to the access layer security algorithm and the key, and optionally the new eNB may also include a ShortMAC-I information element to assist the old eNB that receives the RLF INDICATION message to resolve the potential.
  • the physical cell identity (PCI) collision problem can accurately determine whether it is the eNB to which the terminal is connected when the radio link fails.
  • the second way: another context acquisition method is to borrow the X2 interface context recovery process introduced for the UP interface optimization air interface recovery process. That is, when the new eNB receives the air interface re-establishment request initiated by the terminal due to the radio link failure, the new eNB may send a RETRIEVE UE CONTEXT REQUEST message to the old eNB to request to acquire the context of the terminal on the old eNB. .
  • the old eNB that received the RLF INDICATION message or the RETRIEVE UE CONTEXT REQUEST message successfully matches the terminal context it will pass the handover request message HANDOVER REQUEST message in the handover preparation process or restore the UE context response RETRIEVE UE CONTEXT
  • the RESPONSE message conveys the terminal context to the new eNB.
  • Both the HANDOVER REQUEST message and the RETRIEVE UE CONTEXT RESPONSE message must include the X2AP of the UE, the S1A interface information, the AS layer security information of the terminal, and the E-RAB bearer information.
  • the terminal initiates re-establishment on the new eNB, and the S1-AP Path Switch process of the S1 interface is also triggered in the standard to establish a new eNB from the new eNB to the Mobility Management Entity (MME).
  • MME Mobility Management Entity
  • FIG. 1 is a first schematic flowchart of a method for establishing a connection re-establishment according to an embodiment of the present disclosure. As shown in FIG. 1 , the method includes:
  • Step 101 The terminal sends a first message to the base station, where the first message is used to request wireless connection re-establishment.
  • Step 102 The terminal receives a second message sent by the base station, where the second message is a response message of the first message.
  • Step 103 The terminal sends a third message to the base station, where the third message is used to indicate that the wireless connection re-establishment is completed.
  • the first message, the second message, and the third message satisfy at least one of the following:
  • the first message includes at least one of the following: temporary mobile subscriber identity S-TMSI information, cell identity information, evolved cell global identity information, preset length S-TMSI information, preset length of cell identity information, cell wireless
  • the second message includes: indication information indicating that the terminal reports S-TMSI information or cell identity information
  • the third message includes at least one of the following: S - TMSI information, cell identity information, evolved cell global identity information, preset length S-TMSI information, preset length cell identity information.
  • the terminal after receiving the second message, the terminal sends a third message to the base station, and the terminal according to whether the indication information is carried in the second message or according to the indication
  • the value of the information is determined whether the third message carries at least one of the following: S-TMSI information, cell identity information, evolved cell global identifier information, preset length S-TMSI information, and preset length of cell identity information. . .
  • the preset length of S-TMSI information or cell identity information includes partial S-TMSI information or partial cell identity information of a preset length.
  • the manner in which the terminal includes the identification information in the first message includes at least one of the following:
  • the terminal constructs the re-establishment identifier by using the S-TMSI information and the physical cell identifier information;
  • the terminal uses the C-RNTI information and the cell identity information to construct a re-establishment identifier
  • the terminal uses the C-RNTI information, the PCI information, and the short-MAC-I information to construct a re-establishment identifier.
  • the short MAC-I information is configured in one of the following manners: a preset length of S-TMSI information, and a preset length of cell identifier information.
  • FIG. 2 is a second schematic flowchart of a method for establishing a connection re-establishment according to an embodiment of the present disclosure. As shown in FIG. 2, the method includes:
  • Step 201 The first network element receives the first message sent by the terminal, where the first message is used to request re-establishment of the wireless connection; the first network element sends a second message to the terminal, where the second message is a response message of the first message; the first network element receives a third message of the terminal, and the third message is used to indicate that the wireless connection re-establishment is completed.
  • Step 202 After the first network element triggers the wireless connection re-establishment, the fourth network message is sent to the second network element, where the fourth message is used to request to acquire the terminal context, or is used to notify the wireless link that the wireless link fails.
  • the first message, the second message, and the third message satisfy at least one of the following:
  • the first message includes at least one of the following: S-TMSI information, cell identity information, evolved cell global identity information, preset length S-TMSI information, preset length cell identity information, and cell wireless network temporary Identifying a C-RNTI, a physical cell identifier PCI, and a short MAC-I;
  • the second message includes: indication information indicating that the terminal reports S-TMSI information or cell identity information;
  • the third message includes at least one of the following: S-TMSI Information, cell identification information, evolved cell global identification information, preset length S-TMSI information, and preset length of cell identification information.
  • the method further includes:
  • the first network element After receiving the third message sent by the terminal, the first network element sends the fourth message to the second network element.
  • the method when the AS layer security of the terminal is not activated or the terminal does not have valid short MAC-I information, the method further includes:
  • the first network element constructs a fourth message according to the first message or the third message, where the fourth message includes at least one of the following: a cell identifier, a terminal identifier, and security information.
  • the fourth message includes at least one of the following: a new message, an existing message; the existing message is one of the following: a radio link failure indication message, and a recovery UE context request message.
  • the method further includes:
  • the first network element indicates, by using the second message, whether the terminal includes the identification information in the third message in the third message.
  • the first network element is a base station to which the terminal requests to reestablish the wireless connection
  • the second network element is a base station where the terminal fails to generate a wireless link
  • FIG. 3 is a third schematic flowchart of a method for establishing a connection re-establishment according to an embodiment of the present disclosure. As shown in FIG. 3, the method includes:
  • Step 301 The first network element receives the first message sent by the terminal, where the first message is used to request wireless connection re-establishment.
  • Step 302 The first network element sends a fourth message to the second network element, where the fourth message is used to request to acquire the terminal context, or is used to notify the wireless link of failure.
  • Step 303 The first network element receives the fifth message sent by the second network element.
  • the fifth message when the terminal adopts a control plane optimization mode, includes at least the following letter Information: Old eNB UE X2AP ID, UE context information.
  • the fifth message is one of the following: a new message, an existing message, and the existing message is one of the following: a handover request message, and a recovery UE context request message.
  • the fifth message when the fifth message is the existing message, the fifth message includes indication information indicating whether the mandatory field is valid.
  • the first network element when the fifth message is a handover request message, the first network element further sends a sixth message, where the sixth message includes at least the following information: Old eNB UE X2AP ID, New eNB UE X2AP ID.
  • the sixth message is one of the following: a new message, an existing message, and the existing message is: a handover request acknowledgement message.
  • the sixth message when the sixth message is the existing message, the sixth message includes indication information indicating whether the mandatory field is valid.
  • FIG. 4 is a schematic flowchart 4 of a method for establishing a connection re-establishment according to an embodiment of the present disclosure. As shown in FIG. 4, the method includes:
  • Step 401 After acquiring the terminal context from the second network element, the first network element sends a seventh message to the third network element, where the seventh message is used to request to establish an interface path of the first network element to the third network element.
  • the seventh message includes at least the following information: the eNB UE S1AP ID, the Source MME UE S1AP ID, when the terminal adopts the control plane optimization mode.
  • the method further includes:
  • the first network element receives the eighth message sent by the third network element, where the eighth message is the response message of the seventh message, where the eighth message includes at least one of the following: MME UE S1AP ID, eNB UE S1AP ID.
  • the seventh message is one of the following: a new message, a first existing message, and a second existing message; the first existing message is: a path selection request message, the second The existing message is: initial UE message.
  • the eighth message is one of the following: a new message, a first existing message, and a second existing message; the first existing message is: a path selection request confirmation message, where the The two existing messages are: establishing a connection indication message.
  • the seventh message when the seventh message is the first existing message or the second existing message, the seventh message includes indication information indicating whether the mandatory field is valid.
  • the eighth message when the eighth message is the existing message, the eighth message includes indication information indicating whether the mandatory field is valid.
  • the wireless establishment cause value field in the seventh message is extended, so that the field includes an air interface wireless re-establishment cause; or, when the seventh message is a new message, the reason for the wireless re-establishment of the air interface is included in the new message through a preset field.
  • FIG. 5 is a schematic diagram of Embodiment 1 of the present disclosure.
  • the terminal AS layer security using the CP optimization mode is not activated, and thus there is no valid short MAC-I information, and the terminal fills the 16-bit truncated S-TMSI into the existing re-establishment.
  • the Reestab UE-Identity is identified and included in the RRC Connection Re-establishment Request message and sent to the new base station eNB1, according to which the eNB1 can more accurately determine the old to which the context recovery request (RLF INDICATION message or RETRIEVE UE CONTEXT REQUEST message) needs to be sent.
  • eNB the new base station
  • the eNB1 may include the received truncated S-TMSI in the X2 interface context acquisition request message, or construct the cell identifier, the terminal identifier, and the security information in the X2 interface context acquisition request message according to the new re-establishment identifier.
  • truncated S-TMSI may also be replaced with truncated CellIdentity.
  • FIG. 6 is a schematic diagram of Embodiment 2 of the present disclosure, which uses a CP optimized manner for terminal AS layer security. Inactive, and thus there is no valid shortMAC-I information, the terminal constructs a new re-establishment identifier new ReestabUE-Identity using 40-bit S-TMSI and 9-bit PCI information, or the terminal uses a length of 16 bits.
  • the C-RNTI and the 34-bit ECGI information construct a new re-establishment identifier new Reestab UE-Identity, and are sent to the new base station eNB1 in the RRC connection re-establishment request message, according to which the eNB1 can more accurately determine the need to The old eNB that sent the context recovery request (RLF INDICATION message or RETRIEVE UE CONTEXT REQUEST message).
  • the eNB1 may also carry a new re-establishment identifier in the X2 interface context acquisition request message, or construct a cell identifier, a terminal identifier, and security information in the X2 interface context acquisition request message according to the new re-establishment identifier.
  • FIG. 7 is a schematic diagram of Embodiment 3 of the present disclosure.
  • the eNB1 After receiving the RRC connection re-establishment request, the eNB1 delays triggering the X2 interface context acquisition process.
  • the eNB1 includes one or a combination of the following indication information in the RRC connection re-establishment message sent to the terminal: an S-TMSI information request indication, and a CellIdentity information request indication.
  • the terminal After receiving the RRC connection re-establishment message, the terminal carries one or a combination of the following information in the RRC connection re-establishment completion message according to the indication information: 40-bit S-TMSI information, and 28-bit CellIdentity information, which is reported to the eNB1.
  • the eNB1 determines, according to the re-establishment identifier carried in the re-establishment request message and the S-TMSI carried in the re-establishment complete message, the old eNB to which the context recovery request (RLF INDICATION message or RETRIEVE UE CONTEXT REQUEST message) needs to be sent, according to S- For TMSI information, eNB1 can determine that eNB2 is a suitable target base station, while eNB3 is not.
  • the preset length of S-TMSI information may be a preset length bit in the intercept S-TMSI.
  • the minimum preset length bit of the S-TMSI is intercepted, or the highest preset length bit of the S-TMSI is intercepted, or the intermediate preset length bit of the S-TMSI is intercepted as the preset length S-TMSI information.
  • the bits of the different parts or segments of the S-TMSI are intercepted into a preset length of S-TMSI information.
  • the preset length of the cell identity information may be a preset length bit in the intercepted cell identity information. For example, the lowest preset length bit of the cell identification information is intercepted, or the highest preset length bit of the cell identification information is intercepted, or the intermediate preset length bit of the cell identification information is intercepted, as the cell identifier information of the preset length. Or, intercepting different parts of the cell identification information or a plurality of bits of the segment into a preset length of cell identification information information.
  • the preset length can be 16 or other lengths.
  • the cell identity information is a global cell identity, different from the physical cell identity.
  • FIG. 8 is a first schematic structural diagram of a connection re-establishment device according to an embodiment of the present disclosure. As shown in FIG. 8, the device includes:
  • the communication unit 81 is configured to send a first message to the base station, where the first message is used to request reconnection of the wireless connection, and the second message sent by the base station is received, where the second message is a response message of the first message.
  • Sending a third message to the base station, the third message is used to indicate that the wireless connection re-establishment is completed; the first message, the second message, and the third message satisfy at least one of the following:
  • the first message includes at least one of the following: temporary mobile subscriber identity S-TMSI information, cell identity information, evolved cell global identity information, preset length S-TMSI information, preset length of cell identity information, cell wireless
  • the second message includes: indication information indicating that the terminal reports S-TMSI information or cell identity information
  • the third message includes at least one of the following: S - TMSI information, cell identity information, evolved cell global identity information, preset length S-TMSI information, preset length cell identity information.
  • the communication unit 81 is further configured to: after receiving the second message, send a third message to the base station, and the terminal according to whether the indication is carried in the second message And determining, according to the value of the indication information, whether to carry at least one of the following in the third message: S-TMSI information, cell identity information, evolved cell global identifier information, and pre- Set the length of the S-TMSI information and the cell ID information of the preset length. .
  • the preset length of S-TMSI information or cell identity information includes partial S-TMSI information or partial cell identity information of a preset length.
  • the manner in which the terminal includes the identification information in the first message includes at least one of the following:
  • the terminal constructs the re-establishment identifier by using the S-TMSI information and the physical cell identifier information;
  • the terminal uses the C-RNTI information and the cell identity information to construct a re-establishment identifier
  • the terminal uses the C-RNTI information, the PCI information, and the short-MAC-I information to construct a re-establishment identifier.
  • the short MAC-I information is configured in one of the following manners: a preset length of S-TMSI information, and a preset length of cell identifier information.
  • each unit in the connection re-establishment device may be performed by a central processing unit (CPU) located in the connection re-establishment device, or a microprocessor (MPU, Micro Processor Unit). ), or a digital signal processor (DSP, Digital Signal Processor), or Field Programmable Gate Array (FPGA).
  • CPU central processing unit
  • MPU Micro Processor Unit
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • FIG. 9 is a second structural diagram of a connection re-establishment device according to an embodiment of the present disclosure. As shown in FIG. 9, the device includes:
  • the communication unit 91 is configured to receive a first message sent by the terminal, where the first message is used to request reestablishment of the wireless connection, and the second message is sent to the terminal, where the second message is a response message of the first message.
  • Receiving a third message of the terminal the third message is used to indicate that the wireless connection re-establishment is completed; after triggering the re-establishment of the wireless connection, sending a fourth message to the second network element, where the fourth message is used for Requesting to acquire a terminal context, or for notifying that the wireless link fails; the first message, the second message, and the third message satisfy at least one of the following:
  • the first message includes at least one of the following: S-TMSI information, cell identity information, evolved cell global identifier information, preset length S-TMSI information, and cell ID of a preset length.
  • the information the cell radio network temporary identifier C-RNTI, the physical cell identifier PCI, the short MAC-I;
  • the second message includes: indication information indicating that the terminal reports the S-TMSI information or the cell identifier information;
  • the third message includes the following at least One of the following: S-TMSI information, cell identification information, evolved cell global identification information, preset length S-TMSI information, and preset length of cell identification information.
  • the communication unit 91 when the AS layer security of the terminal is not activated or the terminal does not have valid short MAC-I information, the communication unit 91 is configured to send the third message to the second network element after receiving the third message sent by the terminal. Fourth message.
  • the device further includes:
  • the determining unit 92 is configured to determine, according to the first message or the third message, the destination network element to be sent by the fourth message, where the destination network element is one or more second network elements;
  • the constructing unit 93 is configured to construct a fourth message according to the first message or the third message, where the fourth message includes at least one of the following: a cell identifier, a terminal identifier, and security information.
  • the fourth message includes at least one of the following: a new message, an existing message; the existing message is one of the following: a radio link failure indication message, and a recovery UE context request message.
  • the device further includes:
  • the indicating unit 94 is configured to indicate, by using the second message, whether the terminal includes the identification information in the third message in the third message.
  • the device is configured in a first network element, where the first network element is a base station to which the terminal requests to reestablish the wireless connection, and the second network element is a base station in which the terminal fails to generate a wireless link. .
  • connection re-establishment device may be implemented by a CPU, an MPU, or a DSP, or an FPGA or the like located in the connection re-establishment device.
  • FIG. 10 is a third structural diagram of a structure of a connection re-establishment apparatus according to an embodiment of the present disclosure. As shown in FIG. 10, the apparatus includes:
  • the communication unit 1001 is configured to receive a first message sent by the terminal, where the first message is used to request re-establishment of the wireless connection, and the fourth message is sent to the second network element, where the fourth message is used to request to acquire the terminal context. Or for notifying that the radio link fails; receiving the fifth message sent by the second network element;
  • the fifth response message includes at least the following information: the Old eNB UE X2AP ID and the UE context information.
  • the fifth message is one of the following: a new message, an existing message, and the existing message is one of the following: a handover request message, and a recovery UE context request message.
  • the fifth message when the fifth message is the existing message, the fifth message includes indication information indicating whether the mandatory field is valid.
  • the first network element when the fifth message is a handover request message, the first network element further sends a sixth message, where the sixth message includes at least the following information: Old eNB UE X2AP ID, New eNB UE X2AP ID.
  • the sixth message is one of the following: a new message, an existing message, and the existing message is: a handover request acknowledgement message.
  • the sixth message when the sixth message is the existing message, the sixth message includes indication information indicating whether the mandatory field is valid.
  • connection re-establishment device may be implemented by a CPU, an MPU, or a DSP, or an FPGA or the like located in the connection re-establishment device.
  • FIG. 11 is a schematic structural diagram of a structure of a connection re-establishment apparatus according to an embodiment of the present disclosure. As shown in FIG. 11, the apparatus includes:
  • the communication unit 1101 is configured to: after acquiring the terminal context from the second network element, send a seventh message to the third network element, where the seventh message is used to request to establish an interface path of the first network element to the third network element;
  • the seventh message includes at least the following information: eNB UE S1AP ID, Source MME UE S1AP ID.
  • the communication unit 1101 is further configured to receive an eighth message sent by the third network element, where the eighth message is a response message of the seventh message, where the eighth message includes the following At least one of: MME UE S1AP ID, eNB UE S1AP ID.
  • the seventh message is one of the following: a new message, a first existing message, and a second existing message; the first existing message is: a path selection request message, the second The existing message is: initial UE message.
  • the eighth message is one of the following: a new message, a first existing message, and a second existing message; the first existing message is: a path selection request confirmation message, where the The two existing messages are: establishing a connection indication message.
  • the seventh message when the seventh message is the first existing message or the second existing message, the seventh message includes indication information indicating whether the mandatory field is valid.
  • the eighth message when the eighth message is the existing message, the eighth message includes indication information indicating whether the mandatory field is valid.
  • the wireless establishment cause value field in the seventh message is extended, so that the field includes an air interface wireless re-establishment cause; or, when the seventh message is a new message, the reason for the wireless re-establishment of the air interface is included in the new message by a preset field.
  • connection re-establishment device may be implemented by a CPU, an MPU, or a DSP, or an FPGA or the like located in the connection re-establishment device.
  • the electronic device includes a processor 1201 and a memory 1202 storing executable instructions of the processor 1201, when the instruction is processed.
  • the device 1201 is executed,
  • the processor 1201 performs the following steps: sending a first message to the base station, the first message is used to request wireless connection re-establishment, and receiving the second message sent by the base station, the second The message is a response message of the first message; sending a third message to the base The third message is used to indicate that the wireless connection re-establishment is completed; wherein the first message includes at least one of the following: temporary mobile subscriber identity S-TMSI information, cell identity information, and evolved cell global identity information.
  • the third message includes at least one of the following: S-TMSI information, cell identity information, evolved cell global identity information, truncated S-TMSI information, and truncated cell identity information.
  • the processor 1201 performs the following steps: receiving a first message sent by the terminal, where the first message is used to request re-establishment of the wireless connection; and after triggering the re-establishment of the wireless connection, to the second network element Sending a fourth message, where the fourth message is used to request to acquire a terminal context, where the first message includes at least one of the following: S-TMSI information, cell identity information, evolved cell global identifier information, truncated S- TMSI information, truncated cell identification information, C-RNTI, physical cell identity, shortMAC-I.
  • the processor 1201 performs the following steps: receiving a first message sent by the terminal, where the first message is used to request reconnection of the wireless connection, and sending a fourth message to the second network element, The fourth message is used to request to acquire the terminal context; the fifth message sent by the second network element is received, and the fifth message is a response message of the fourth message; wherein, when the terminal adopts the control plane optimization mode, the The five messages include at least the following information: message type, eNB UE X2AP ID, target cell identity, GUMMEI, UE context information.
  • the processor 1201 performs the following steps: after acquiring the terminal context from the second network element, sending a seventh message to the third network element, where the seventh message is used to request to establish the first network element.
  • the seventh message includes at least the following information: the message type, the eNB UE S1AP ID, the Source MME UE S1AP ID, the cell access mode, and the source MME. GUMMEI.
  • FIG. 12 can perform any of the present disclosure. Method steps for connection re-establishment in an embodiment.
  • the device for tracking the service signaling described above in the embodiment of the present disclosure may also be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a separate product. Based on such understanding, the technical solution of the embodiments of the present disclosure may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present disclosure.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • program codes such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • embodiments of the present disclosure also provide a computer storage medium in which a computer program for executing a connection re-establishment method of an embodiment of the present disclosure is stored.
  • embodiments of the present disclosure can be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware aspects. Moreover, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • the terminal sends a first message to the base station, where the first message is used to request re-establishment of the wireless connection, and the terminal receives the second message sent by the base station, where the second message is a response message of the first message; the terminal sends a third message to the base station, where the third message is used to indicate that the wireless connection re-establishment is completed, and thus, the connection triggered by the radio link failure in the CP optimized mode may be provided. Re-establish the complete process, reduce the signaling load, and improve the connection re-establishment success rate.

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Abstract

本公开公开了一种连接重建立方法及装置、电子设备、计算机存储介质,包括:终端发送第一消息给基站;所述终端接收所述基站发送的第二消息;所述终端发送第三消息给所述基站;所述第一消息、第二消息及第三消息满足以下至少之一:所述第一消息包括以下至少之一:临时移动用户标识(S-TMSI)信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识(C-RNTI)、物理小区标识(PCI)、短介质访问控制(short MAC-I);所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。

Description

一种连接重建立方法及装置、电子设备、计算机存储介质
相关申请的交叉引用
本申请基于申请号为201610961704.4、申请日为2016年11月04日的中国专利申请提出,并要求该中国专利申请的优先权,该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本公开涉及通信技术领域,尤其涉及控制面(CP,Control Plane)优化方式中的一种连接重建立方法及装置、电子设备、计算机存储介质。
背景技术
机器间(M2M,Machine to Machine)通信是第五代移动通信技术(5G)目前研究的一个重要课题,也是未来无线通信的一个重要应用领域。在M2M课题里,针对低成本、低功耗、低移动性、低吞吐量等终端特性,提出了窄带物联网(NB-IoT,NarowBand-Internet of Things)研究子课题,也就是在200khz的频带内为NB-IoT低成本用户设备(UE,User Equipment)提供低吞吐量的无线通讯服务。
为了减少信令开销,降低NB-IoT终端的耗电,现有研究引入了两种认知IoT(cIoT,Cognitive IoT)优化方式:
1、控制面优化方式(后文简称CP优化方式):终端和网络之间不会建立数据无线承载(DRB,Data Radio Bearer),也不会建立AS安全上下文,数据被封装成NAS PDU附着在控制面信令中传输。这种方式节省信令的效果比较明显,但一次传输的数据包长度有限,对于比较大的数据包,需要分成多个小包发送,在覆盖较差的情况下,容易带来丢包问题,导致接收 方难以接收完整的数据包。
2、用户面优化方式(后文简称用户面控制(UP,User Plane)优化方式):终端和网络建立完整连接,使用DRB传输数据,数据传输完毕后,在终端和网络侧通过挂起流程保存承载信息上下文,AS安全上下文等,后续再次发送数据时,双方通过恢复流程来恢复之前保存的上下文,继续使用DRB承载来传输数据。这种方式和现有流程差异不大,对数据包的长度没有明显限制,但是节省信令的效果有限。
现有研究中为了支持NB-IoT低成本终端在连接态的移动性,允许使用CP优化方式的终端使用空中接口的重建立流程,例如终端在旧的演进基站(eNB)下检测到无线链路失败(RLF,Radio Link Failure),则终端会尝试在新的eNB下发起空中接口的重建立。新eNB收到终端的重建立请求后,需要向终端上报的发生无线链路失败的eNB(后文简称旧eNB)发起上下文获取流程(Context fetch procedure),以便从旧eNB上获取终端的上下文,进而完成整个空中接口重建立流程以及网络侧S1路径的切换。如果需要的话,还应支持NAS数据重传。
对于上述使用CP优化方式的终端触发的连接重建立流程,现有流程中存在如下问题:
1)由于现有CP优化方式不支持AS层安全机制,使用CP优化方式的终端将无法根据接入层安全算法和密钥计算并上报ShortMAC-I信息给新eNB,则新eNB也无法在RLF INDICATION消息中包括ShortMAC-I,需要考虑其他方案来解决旧eNB上的PCI混淆问题。
2)现有标准中,RETRIEVE UE CONTEXT REQUEST消息中包括的是新eNB从空中接口获取的恢复标识,并且还需包括ShortMAC-I信息,而在CP方式的空中接口重建立流程中,新eNB无法获取到该恢复标识以及基于接入层安全机制(接入层安全算法、接入层安全密钥等)的ShortMAC-I 信息,因此采用这种方式同样需要考虑其他方案来解决旧eNB对基站和终端的识别问题,包括PCI混淆问题。目前已有研究提出可以在重建立请求消息中携带恢复标识,但是如何解决ShortMAC-I缺失导致的问题还需要进一步研究。
3)对于CP优化方式,由于终端采用NAS信令通过空口的信令无线承载(SRB,Signalling Radio Bearers)传输数据,因此不会和网络侧建立E-RAB承载,又因为CP优化方式不支持AS安全而没有AS层安全信息,因此上述现有流程消息中的大部分必选字段对CP优化方式而言都是无法获取的,需要考虑解决方案。
4)考虑到CP优化方式中基站和MME之间没有用户面链路,不需要恢复承载上下文,因此需要考虑其他简化的方式来建立从新eNB到服务MME的S1信令连接。
公开内容
为解决上述技术问题,本公开实施例提供了一种连接重建立方法及装置、电子设备、计算机存储介质。
一种连接重建立方法,所述方法包括:
终端发送第一消息给基站,所述第一消息用于请求无线连接重建立;
所述终端接收所述基站发送的第二消息,所述第二消息为所述第一消息的响应消息;
所述终端发送第三消息给所述基站,所述第三消息用于指示所述无线连接重建立完成;
所述第一消息、第二消息及第三消息满足以下至少之一:
所述第一消息包括以下至少之一:临时移动用户标识S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、 短介质访问控制shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
所述终端接收到所述第二消息后,发送第三消息给所述基站,并且,所述终端根据所述第二消息中是否携带所述指示信息或根据所述指示信息的取值,确定是否在第三消息中携带以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
所述预设长度的S-TMSI信息或小区标识信息包括预设长度的部分S-TMSI信息或部分小区标识信息。
终端在第一消息中包括所述识别信息的方式至少包括以下之一:
终端使用S-TMSI信息和物理小区标识信息构造重建立标识;
终端使用C-RNTI信息和小区标识信息构造重建立标识;
终端使用C-RNTI信息、PCI信息以及shortMAC-I信息构造重建立标识;其中,shortMAC-I信息采用以下方式之一来构造:预设长度的S-TMSI信息、预设长度的小区标识信息。
一种连接重建立方法,所述方法包括:
第一网元接收终端发送的第一消息,所述第一消息用于请求无线连接重建立;
所述第一网元向所述终端发送第二消息,所述第二消息为所述第一消息的响应消息;
所述第一网元接收所述终端的第三消息,所述第三消息用于指示所述无线连接重建立完成;
所述第一网元触发无线连接重建立后,向第二网元发送第四消息,所 述第四消息用于请求获取终端上下文,或者用于通知无线链路失败;
所述第一消息、第二消息及第三消息满足以下至少之一:
其中,所述第一消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
当终端的接入层AS层安全未激活或终端没有有效的shortMAC-I信息时,所述方法还包括:
第一网元在收到终端发送的第三消息后再向第二网元发送所述第四消息。
当终端的AS层安全未激活或终端没有有效的shortMAC-I信息时,所述方法还包括:
第一网元根据第一消息或第三消息确定所述第四消息待发送的目的网元,所述目的网元为一个或多个第二网元;
或者,第一网元根据第一消息或第三消息构造第四消息,所述第四消息包括以下至少之一:小区标识、终端标识、安全信息。
所述第四消息包括以下至少之一:新消息、现有消息;所述现有消息为以下之一:无线链路失败指示消息、恢复UE上下文请求消息。
所述方法还包括:
所述第一网元通过第二消息指示终端在第三消息中是否包括所述第三消息中的识别信息。
所述第一网元为终端向其发送请求无线连接重建立的基站,所述第二网元为终端发生无线链路失败的基站。
一种连接重建立方法,所述方法包括:
第一网元收到终端发送的第一消息,所述第一消息用于请求无线连接重建立;
第一网元发送第四消息给第二网元,所述第四消息用于请求获取终端上下文,或者用于通知无线链路失败;
第一网元接收第二网元发送的第五消息;
其中,当终端采用控制面优化方式时,所述第五消息至少包括如下信息:Old eNB UE X2AP ID、UE上下文信息。
所述第五消息为以下之一:新消息、现有消息,所述现有消息为以下之一:切换请求消息、恢复UE上下文请求消息。
当所述第五消息为所述现有消息时,第五消息中包括用于指示必选字段是否有效的指示信息。
当所述第五消息为切换请求消息时,第一网元还发送第六消息,所述第六消息至少包括如下信息:Old eNB UE X2AP ID、New eNB UE X2AP ID。
所述第六消息为以下之一:新的消息、现有消息,所述现有消息为:切换请求确认消息。
当所述第六消息为所述现有消息时,第六消息中包括用于指示必选字段是否有效的指示信息。
一种连接重建立方法,所述方法包括:
第一网元从第二网元获取到终端上下文后,向第三网元发送第七消息,所述第七消息用于请求建立第一网元到第三网元的接口路径;
其中,当终端采用控制面优化方式时,所述第七消息至少包括如下信息:eNB UE S1AP ID、Source MME UE S1AP ID。
所述方法还包括:
第一网元接收第三网元发送的第八消息,所述第八消息为所述第七消 息的应答消息,其中,所述第八消息包括以下至少之一:MME UE S1AP ID、eNB UE S1AP ID。
所述第七消息为以下之一:新的消息、第一现有消息、第二现有消息;所述第一现有消息为:路径选择请求消息,所述第二现有消息为:初始UE消息。
所述第八消息为以下之一:新的消息、第一现有消息、第二现有消息;所述第一现有消息为:路径选择请求确认消息,所述第二现有消息为:建立连接指示消息。
当所述第七消息为所述第一现有消息或第二现有消息时,第七消息中包括用于指示必选字段是否有效的指示信息。
当所述第八消息为所述现有消息时,第八消息中包括用于指示必选字段是否有效的指示信息。
当所述第七消息为初始UE消息时,扩展所述第七消息中的无线建立原因取值字段,使所述字段包括空中接口无线重建立原因;或者,当所述第七消息为新消息时,在所述新的消息中通过预设字段包括空中接口无线重建立原因。
一种连接重建立装置,所述装置包括:
通信单元,配置为发送第一消息给基站,所述第一消息用于请求无线连接重建立;接收所述基站发送的第二消息,所述第二消息为所述第一消息的响应消息;发送第三消息给所述基站,所述第三消息用于指示所述无线连接重建立完成;所述第一消息、第二消息及第三消息满足以下至少之一:
所述第一消息包括以下至少之一:临时移动用户标识S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、 shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
所述通信单元,还配置为接收到所述第二消息后,发送第三消息给所述基站,并且,所述终端根据所述第二消息中是否携带所述指示信息或根据所述指示信息的取值,确定是否在第三消息中携带以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。。
所述预设长度的S-TMSI信息或小区标识信息包括预设长度的部分S-TMSI信息或部分小区标识信息。
终端在第一消息中包括所述识别信息的方式至少包括以下之一:
终端使用S-TMSI信息和物理小区标识信息构造重建立标识;
终端使用C-RNTI信息和小区标识信息构造重建立标识;
终端使用C-RNTI信息、PCI信息以及shortMAC-I信息构造重建立标识;其中,shortMAC-I信息采用以下方式之一来构造:预设长度的S-TMSI信息、预设长度的小区标识信息。
一种连接重建立装置,所述装置包括:
通信单元,配置为接收终端发送的第一消息,所述第一消息用于请求无线连接重建立;向所述终端发送第二消息,所述第二消息为所述第一消息的响应消息;接收所述终端的第三消息,所述第三消息用于指示所述无线连接重建立完成;触发无线连接重建立后,向第二网元发送第四消息,所述第四消息用于请求获取终端上下文,或者用于通知无线链路失败;所述第一消息、第二消息及第三消息满足以下至少之一:
其中,所述第一消息包括以下至少之一:S-TMSI信息、小区标识信息、 演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
当终端的AS层安全未激活或终端没有有效的shortMAC-I信息时,通信单元,配置为在收到终端发送的第三消息后再向第二网元发送所述第四消息。
所述装置还包括:
确定单元,配置为根据第一消息或第三消息确定所述第四消息待发送的目的网元,所述目的网元为一个或多个第二网元;
构建单元,配置为根据第一消息或第三消息构造第四消息,所述第四消息包括以下至少之一:小区标识、终端标识、安全信息。
所述第四消息包括以下至少之一:新消息、现有消息;所述现有消息为以下之一:无线链路失败指示消息、恢复UE上下文请求消息。
所述装置还包括:
指示单元,配置为通过第二消息指示终端在第三消息中是否包括所述第三消息中的识别信息。
所述装置设置在第一网元,所述第一网元为终端向其发送请求无线连接重建立的基站,所述第二网元为终端发生无线链路失败的基站。
一种连接重建立装置,所述装置包括:
通信单元,配置为收到终端发送的第一消息,所述第一消息用于请求无线连接重建立;发送第四消息给第二网元,所述第四消息用于请求获取终端上下文,或者用于通知无线链路失败;接收第二网元发送的第五消息;
其中,当终端采用控制面优化方式时,所述第五应消息至少包括如下 信息:Old eNB UE X2AP ID、UE上下文信息。
所述第五消息为以下之一:新消息、现有消息,所述现有消息为以下之一:切换请求消息、恢复UE上下文请求消息。
当所述第五消息为所述现有消息时,第五消息中包括用于指示必选字段是否有效的指示信息。
当所述第五消息为切换请求消息时,第一网元还发送第六消息,所述第六消息至少包括如下信息:Old eNB UE X2AP ID、New eNB UE X2AP ID。
所述第六消息为以下之一:新的消息、现有消息,所述现有消息为:切换请求确认消息。
当所述第六消息为所述现有消息时,第六消息中包括用于指示必选字段是否有效的指示信息。
一种连接重建立装置,所述装置包括:
通信单元,配置为从第二网元获取到终端上下文后,向第三网元发送第七消息,所述第七消息用于请求建立第一网元到第三网元的接口路径;其中,当终端采用控制面优化方式时,所述第七消息至少包括如下信息:eNB UE S1AP ID、Source MME UE S1AP ID。
所述通信单元,还配置为接收第三网元发送的第八消息,所述第八消息为所述第七消息的应答消息,其中,所述第八消息包括以下至少之一:MME UE S1AP ID、eNB UE S1AP ID。
所述第七消息为以下之一:新的消息、第一现有消息、第二现有消息;所述第一现有消息为:路径选择请求消息,所述第二现有消息为:初始UE消息。
所述第八消息为以下之一:新的消息、第一现有消息、第二现有消息;所述第一现有消息为:路径选择请求确认消息,所述第二现有消息为:建立连接指示消息。
当所述第七消息为所述第一现有消息或第二现有消息时,第七消息中包括用于指示必选字段是否有效的指示信息。
当所述第八消息为所述现有消息时,第八消息中包括用于指示必选字段是否有效的指示信息。
当所述第七消息为初始UE消息时,扩展所述第七消息中的无线建立原因取值字段,使所述字段包括空中接口无线重建立原因;或者,当所述第七消息为新消息时,在所述新的消息中通过预设字段包括空中接口无线重建立原因。
一种电子设备,包括处理器以及存储有所述处理器可执行指令的存储器,当所述指令被处理器执行时,所述处理器执行所述的连接重建立方法步骤。
一种计算机存储介质,该计算机存储介质存储有计算机程序,该计算机程序配置为执行上述连接重建立方法。
本公开实施例的技术方案中,终端发送第一消息给基站,所述第一消息用于请求无线连接重建立;所述终端接收所述基站发送的第二消息,所述第二消息为所述第一消息的响应消息;所述终端发送第三消息给所述基站,所述第三消息用于指示所述无线连接重建立完成;所述第一消息、第二消息及第三消息满足以下至少之一:所述第一消息包括以下至少之一:临时移动用户标识S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。第一网元收到终端发送的第一消息,所述第一消息用于请求无线连接重建立;所述第一网元向所述终 端发送第二消息,所述第二消息为所述第一消息的响应消息;所述第一网元接收所述终端的第三消息,所述第三消息用于指示所述无线连接重建立完成;所述第一网元触发无线连接重建立后,向第二网元发送第四消息,所述第四消息用于请求获取终端上下文,或者用于通知无线链路失败。采用本公开实施例的技术方案,可以提供CP优化方式下无线链路失败触发的连接重建立的完整流程,减少信令负荷,提高连接重建立成功率。
附图说明
图1为本公开实施例的连接重建立方法的流程示意图一;
图2为本公开实施例的连接重建立方法的流程示意图二;
图3为本公开实施例的连接重建立方法的流程示意图三;
图4为本公开实施例的连接重建立方法的流程示意图四;
图5为本公开实施例一的示意图;
图6为本公开实施例二的示意图;
图7为本公开实施例三的示意图;
图8为本公开实施例的连接重建立装置的结构组成示意图一;
图9为本公开实施例的连接重建立装置的结构组成示意图二;
图10为本公开实施例的连接重建立装置的结构组成示意图三;
图11为本公开实施例的连接重建立装置的结构组成示意图四;
图12为本公开实施例的电子设备的结构组成示意图。
具体实施方式
为了能够更加详尽地了解本公开实施例的特点与技术内容,下面结合附图对本公开实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本公开实施例。
对于使用CP优化方式的终端触发的连接重建立流程,首先,对于新 eNB和旧eNB之间的上下文获取流程,可以考虑两种不同的方式:
第一种方式:在现有的网络侧流程中,当新eNB收到终端因无线链路失败而发起的空中接口重建立请求,新eNB会向旧eNB发送无线链路失败指示(RLF INDICATION)消息,RLF INDICATION消息中包括新eNB通过空中接口重建立请求消息所携带的重建立标识信息组{C-RNTI(16bits),PCI(9bits),shortMAC-I(16bits)}获取的终端标识和小区标识信息单元,其中,shortMAC-I由终端根据接入层安全算法和密钥计算得出,可选地新eNB也可以包括ShortMAC-I信息单元,以便辅助接收RLF INDICATION消息的旧eNB来解决潜在的物理小区标识(PCI)冲突问题,从而能够准确判定自己是否是终端发生无线链路失败时所连接的eNB。
第二种方式:另一种上下文获取方式是借用为UP优化方式的空中接口恢复流程而引入的X2接口上下文恢复流程。即当新eNB收到终端因无线链路失败而发起的空中接口重建立请求时,新eNB可以向旧eNB发送恢复UE上下文请求(RETRIEVE UE CONTEXT REQUEST)消息来请求获取终端在旧eNB上的上下文。
其次,在上述流程中,如果接收到RLF INDICATION消息或RETRIEVE UE CONTEXT REQUEST消息的旧eNB成功匹配到终端上下文,它会通过切换准备流程中的切换请求消息HANDOVER REQUEST消息或恢复UE上下文响应RETRIEVE UE CONTEXT RESPONSE消息向新eNB传递终端上下文。无论是HANDOVER REQUEST消息还是RETRIEVE UE CONTEXT RESPONSE消息,都必选包括UE的X2AP、S1A接口信息、终端的AS层安全信息以及E-RAB承载信息。
最后,终端在新eNB上发起重建立,在标准中还会触发S1接口的路径切换(S1-AP Path Switch)流程,以便为UE建立从新eNB到服务移动管理实体(MME,Mobility Management Entity)的S1信令连接,恢复MME上 终端上下文及承载上下文,并更新下行链路路径。
图1为本公开实施例的连接重建立方法的流程示意图一,如图1所示,所述方法包括:
步骤101:终端发送第一消息给基站,所述第一消息用于请求无线连接重建立。
步骤102:所述终端接收所述基站发送的第二消息,所述第二消息为所述第一消息的响应消息。
步骤103:所述终端发送第三消息给所述基站,所述第三消息用于指示所述无线连接重建立完成。
本公开实施例中,所述第一消息、第二消息及第三消息满足以下至少之一:
所述第一消息包括以下至少之一:临时移动用户标识S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
本公开实施例中,所述终端接收到所述第二消息后,发送第三消息给所述基站,并且,所述终端根据所述第二消息中是否携带所述指示信息或根据所述指示信息的取值,确定是否在第三消息中携带以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。。
本公开实施例中,所述预设长度的S-TMSI信息或小区标识信息包括预设长度的部分S-TMSI信息或部分小区标识信息。
本公开实施例中,终端在第一消息中包括所述识别信息的方式至少包括以下之一:
终端使用S-TMSI信息和物理小区标识信息构造重建立标识;
终端使用C-RNTI信息和小区标识信息构造重建立标识;
终端使用C-RNTI信息、PCI信息以及shortMAC-I信息构造重建立标识;其中,shortMAC-I信息采用以下方式之一来构造:预设长度的S-TMSI信息、预设长度的小区标识信息。
图2为本公开实施例的连接重建立方法的流程示意图二,如图2所示,所述方法包括:
步骤201:第一网元接收终端发送的第一消息,所述第一消息用于请求无线连接重建立;所述第一网元向所述终端发送第二消息,所述第二消息为所述第一消息的响应消息;所述第一网元接收所述终端的第三消息,所述第三消息用于指示所述无线连接重建立完成。
步骤202:所述第一网元触发无线连接重建立后,向第二网元发送第四消息,所述第四消息用于请求获取终端上下文,或者用于通知无线链路失败。
本公开实施例中,所述第一消息、第二消息及第三消息满足以下至少之一:
其中,所述第一消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
本公开实施例中,当终端的AS层安全未激活或终端没有有效的 shortMAC-I信息时,所述方法还包括:
第一网元在收到终端发送的第三消息后再向第二网元发送所述第四消息。
本公开实施例中,当终端的AS层安全未激活或终端没有有效的shortMAC-I信息时,所述方法还包括:
第一网元根据第一消息或第三消息确定所述第四消息待发送的目的网元,所述目的网元为一个或多个第二网元;
或者,第一网元根据第一消息或第三消息构造第四消息,所述第四消息包括以下至少之一:小区标识、终端标识、安全信息。
本公开实施例中,所述第四消息包括以下至少之一:新消息、现有消息;所述现有消息为以下之一:无线链路失败指示消息、恢复UE上下文请求消息。
本公开实施例中,所述方法还包括:
所述第一网元通过第二消息指示终端在第三消息中是否包括所述第三消息中的识别信息。
本公开实施例中,所述第一网元为终端向其发送请求无线连接重建立的基站,所述第二网元为终端发生无线链路失败的基站。
图3为本公开实施例的连接重建立方法的流程示意图三,如图3所示,所述方法包括:
步骤301:第一网元收到终端发送的第一消息,所述第一消息用于请求无线连接重建立。
步骤302:第一网元发送第四消息给第二网元,所述第四消息用于请求获取终端上下文,或者用于通知无线链路失败。
步骤303:第一网元接收第二网元发送的第五消息。
其中,当终端采用控制面优化方式时,所述第五消息至少包括如下信 息:Old eNB UE X2AP ID、UE上下文信息。
本公开实施例中,所述第五消息为以下之一:新消息、现有消息,所述现有消息为以下之一:切换请求消息、恢复UE上下文请求消息。
本公开实施例中,当所述第五消息为所述现有消息时,第五消息中包括用于指示必选字段是否有效的指示信息。
本公开实施例中,当所述第五消息为切换请求消息时,第一网元还发送第六消息,所述第六消息至少包括如下信息:Old eNB UE X2AP ID、New eNB UE X2AP ID。
本公开实施例中,所述第六消息为以下之一:新的消息、现有消息,所述现有消息为:切换请求确认消息。
本公开实施例中,当所述第六消息为所述现有消息时,第六消息中包括用于指示必选字段是否有效的指示信息。
图4为本公开实施例的连接重建立方法的流程示意图四,如图4所示,所述方法包括:
步骤401:第一网元从第二网元获取到终端上下文后,向第三网元发送第七消息,所述第七消息用于请求建立第一网元到第三网元的接口路径;其中,当终端采用控制面优化方式时,所述第七消息至少包括如下信息:eNB UE S1AP ID、Source MME UE S1AP ID。
本公开实施例中,所述方法还包括:
第一网元接收第三网元发送的第八消息,所述第八消息为所述第七消息的应答消息,其中,所述第八消息包括以下至少之一:MME UE S1AP ID、eNB UE S1AP ID。
本公开实施例中,所述第七消息为以下之一:新的消息、第一现有消息、第二现有消息;所述第一现有消息为:路径选择请求消息,所述第二现有消息为:初始UE消息。
本公开实施例中,所述第八消息为以下之一:新的消息、第一现有消息、第二现有消息;所述第一现有消息为:路径选择请求确认消息,所述第二现有消息为:建立连接指示消息。
本公开实施例中,当所述第七消息为所述第一现有消息或第二现有消息时,第七消息中包括用于指示必选字段是否有效的指示信息。
本公开实施例中,当所述第八消息为所述现有消息时,第八消息中包括用于指示必选字段是否有效的指示信息。
本公开实施例中,当所述第七消息为初始UE消息时,扩展所述第七消息中的无线建立原因取值字段,使所述字段包括空中接口无线重建立原因;或者,当所述第七消息为新消息时,在所述新的消息中通过预设字段包括空中接口无线重建立原因。
下面结合具体应用对本公开实施例的方案做进一步描述。
实施例一
图5为本公开实施例一的示意图,采用CP优化方式的终端AS层安全未激活,因而没有有效的shortMAC-I信息,终端将长度为16比特的截断的S-TMSI填入现有重建立标识ReestabUE-Identity,并包括在RRC连接重建立请求消息中发送给新基站eNB1,eNB1根据该信息可以更准确地确定需要向其发送上下文恢复请求(RLF INDICATION消息或RETRIEVE UE CONTEXT REQUEST消息)的旧eNB。eNB1可以将收到的截断的S-TMSI包括在X2接口上下文获取请求消息中,或根据新的重建立标识构造X2接口上下文获取请求消息中的小区标识、终端标识、安全信息。
在本公开实施例的图5中,也可以将truncated S-TMSI替换为truncated CellIdentity。
实施例二
图6为本公开实施例二的示意图,采用CP优化方式的终端AS层安全 未激活,因而没有有效的shortMAC-I信息,终端使用长度为40比特的S-TMSI和长度为9比特的PCI信息构造新的重建立标识new ReestabUE-Identity,或者,终端使用长度为16比特的C-RNTI和长度为34比特的ECGI信息构造新的重建立标识new ReestabUE-Identity,并包括在RRC连接重建立请求消息中发送给新基站eNB1,eNB1根据该信息可以更准确地确定需要向其发送上下文恢复请求(RLF INDICATION消息或RETRIEVE UE CONTEXT REQUEST消息)的旧eNB。eNB1还可以在X2接口上下文获取请求消息中携带新的重建立标识,或根据新的重建立标识构造X2接口上下文获取请求消息中的小区标识、终端标识、安全信息。
实施例三
图7为本公开实施例三的示意图,eNB1收到RRC连接重建立请求后,延迟触发X2接口上下文获取流程。eNB1在发送给终端的RRC连接重建立消息中包括以下指示信息之一或其组合:S-TMSI信息请求指示,CellIdentity信息请求指示。终端收到RRC连接重建立消息后,根据所述指示信息在RRC连接重建立完成消息中携带以下信息之一或其组合:40比特S-TMSI信息,28比特CellIdentity信息,上报给eNB1。eNB1根据重建立请求消息中携带的重建立标识以及重建立完成消息中携带的S-TMSI,确定需要向其发送上下文恢复请求(RLF INDICATION消息或RETRIEVE UE CONTEXT REQUEST消息)的旧eNB,根据S-TMSI信息,eNB1可以判断eNB2是合适的目标基站,而eNB3不是。
本公开的实施例中,预设长度的S-TMSI信息可以是截取S-TMSI中的预设长度比特。例如截取S-TMSI的最低预设长度比特,或者,截取S-TMSI的最高预设长度比特,或者,截取S-TMSI的中间预设长度比特,作为预设长度的S-TMSI信息。或者,截取S-TMSI的不同部分或分段的若干比特组合成预设长度的S-TMSI信息。
预设长度的小区标识信息可以是截取小区标识信息中的预设长度比特。例如截取小区标识信息的最低预设长度比特,或者,截取小区标识信息的最高预设长度比特,或者,截取小区标识信息的中间预设长度比特,作为预设长度的小区标识信息信息。或者,截取小区标识信息的不同部分或分段的若干比特组合成预设长度的小区标识信息信息。
所述预设长度可以是16或其他长度。
所述小区标识信息是全局小区标识,不同于物理小区标识。
图8为本公开实施例的连接重建立装置的结构组成示意图一,如图8所述,所述装置包括:
通信单元81,配置为发送第一消息给基站,所述第一消息用于请求无线连接重建立;接收所述基站发送的第二消息,所述第二消息为所述第一消息的响应消息;发送第三消息给所述基站,所述第三消息用于指示所述无线连接重建立完成;所述第一消息、第二消息及第三消息满足以下至少之一:
所述第一消息包括以下至少之一:临时移动用户标识S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
本公开实施例中,所述通信单元81,还配置为接收到所述第二消息后,发送第三消息给所述基站,并且,所述终端根据所述第二消息中是否携带所述指示信息或根据所述指示信息的取值,确定是否在第三消息中携带以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预 设长度的S-TMSI信息、预设长度的小区标识信息。。
本公开实施例中,所述预设长度的S-TMSI信息或小区标识信息包括预设长度的部分S-TMSI信息或部分小区标识信息。
本公开实施例中,终端在第一消息中包括所述识别信息的方式至少包括以下之一:
终端使用S-TMSI信息和物理小区标识信息构造重建立标识;
终端使用C-RNTI信息和小区标识信息构造重建立标识;
终端使用C-RNTI信息、PCI信息以及shortMAC-I信息构造重建立标识;其中,shortMAC-I信息采用以下方式之一来构造:预设长度的S-TMSI信息、预设长度的小区标识信息。
在实际应用中,所述连接重建立装置中的各个单元所实现的功能,均可由位于连接重建立装置中的中央处理器(CPU,Central Processing Unit)、或微处理器(MPU,Micro Processor Unit)、或数字信号处理器(DSP,Digital Signal Processor)、或现场可编程门阵列(FPGA,Field Programmable Gate Array)等实现。
图9为本公开实施例的连接重建立装置的结构组成示意图二,如图9所述,所述装置包括:
通信单元91,配置为接收终端发送的第一消息,所述第一消息用于请求无线连接重建立;向所述终端发送第二消息,所述第二消息为所述第一消息的响应消息;接收所述终端的第三消息,所述第三消息用于指示所述无线连接重建立完成;触发无线连接重建立后,向第二网元发送第四消息,所述第四消息用于请求获取终端上下文,或者用于通知无线链路失败;所述第一消息、第二消息及第三消息满足以下至少之一:
其中,所述第一消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识 信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
本公开实施例中,当终端的AS层安全未激活或终端没有有效的shortMAC-I信息时,通信单元91,配置为在收到终端发送的第三消息后再向第二网元发送所述第四消息。
本公开实施例中,所述装置还包括:
确定单元92,配置为根据第一消息或第三消息确定所述第四消息待发送的目的网元,所述目的网元为一个或多个第二网元;
构建单元93,配置为根据第一消息或第三消息构造第四消息,所述第四消息包括以下至少之一:小区标识、终端标识、安全信息。
本公开实施例中,所述第四消息包括以下至少之一:新消息、现有消息;所述现有消息为以下之一:无线链路失败指示消息、恢复UE上下文请求消息。
本公开实施例中,所述装置还包括:
指示单元94,配置为通过第二消息指示终端在第三消息中是否包括所述第三消息中的识别信息。
本公开实施例中,所述装置设置在第一网元,所述第一网元为终端向其发送请求无线连接重建立的基站,所述第二网元为终端发生无线链路失败的基站。
在实际应用中,所述连接重建立装置中的各个单元所实现的功能,均可由位于连接重建立装置中的CPU、或MPU、或DSP、或FPGA等实现。
图10为本公开实施例的连接重建立装置的结构组成示意图三,如图10所述,所述装置包括:
通信单元1001,配置为收到终端发送的第一消息,所述第一消息用于请求无线连接重建立;发送第四消息给第二网元,所述第四消息用于请求获取终端上下文,或者用于通知无线链路失败;接收第二网元发送的第五消息;
其中,当终端采用控制面优化方式时,所述第五应消息至少包括如下信息:Old eNB UE X2AP ID、UE上下文信息。
本公开实施例中,所述第五消息为以下之一:新消息、现有消息,所述现有消息为以下之一:切换请求消息、恢复UE上下文请求消息。
本公开实施例中,当所述第五消息为所述现有消息时,第五消息中包括用于指示必选字段是否有效的指示信息。
本公开实施例中,当所述第五消息为切换请求消息时,第一网元还发送第六消息,所述第六消息至少包括如下信息:Old eNB UE X2AP ID、New eNB UE X2AP ID。
本公开实施例中,所述第六消息为以下之一:新的消息、现有消息,所述现有消息为:切换请求确认消息。
本公开实施例中,当所述第六消息为所述现有消息时,第六消息中包括用于指示必选字段是否有效的指示信息。
在实际应用中,所述连接重建立装置中的各个单元所实现的功能,均可由位于连接重建立装置中的CPU、或MPU、或DSP、或FPGA等实现。
图11为本公开实施例的连接重建立装置的结构组成示意图四,如图11所述,所述装置包括:
通信单元1101,配置为从第二网元获取到终端上下文后,向第三网元发送第七消息,所述第七消息用于请求建立第一网元到第三网元的接口路径;其中,当终端采用控制面优化方式时,所述第七消息至少包括如下信息:eNB UE S1AP ID、Source MME UE S1AP ID。
本公开实施例中,所述通信单元1101,还配置为接收第三网元发送的第八消息,所述第八消息为所述第七消息的应答消息,其中,所述第八消息包括以下至少之一:MME UE S1AP ID、eNB UE S1AP ID。
本公开实施例中,所述第七消息为以下之一:新的消息、第一现有消息、第二现有消息;所述第一现有消息为:路径选择请求消息,所述第二现有消息为:初始UE消息。
本公开实施例中,所述第八消息为以下之一:新的消息、第一现有消息、第二现有消息;所述第一现有消息为:路径选择请求确认消息,所述第二现有消息为:建立连接指示消息。
本公开实施例中,当所述第七消息为所述第一现有消息或第二现有消息时,第七消息中包括用于指示必选字段是否有效的指示信息。
本公开实施例中,当所述第八消息为所述现有消息时,第八消息中包括用于指示必选字段是否有效的指示信息。
本公开实施例中,当所述第七消息为初始UE消息时,扩展所述第七消息中的无线建立原因取值字段,使所述字段包括空中接口无线重建立原因;或者,当所述第七消息为新消息时,在所述新消息中通过预设字段包括空中接口无线重建立原因。
在实际应用中,所述连接重建立装置中的各个单元所实现的功能,均可由位于连接重建立装置中的CPU、或MPU、或DSP、或FPGA等实现。
图12为本公开实施例的电子设备的结构组成示意图,如图12所述,所述电子设备包括处理器1201以及存储有所述处理器1201可执行指令的存储器1202,当所述指令被处理器1201执行时,
在第一实施方式中,所述处理器1201执行如下步骤:发送第一消息给基站,所述第一消息用于请求无线连接重建立;接收所述基站发送的第二消息,所述第二消息为所述第一消息的响应消息;发送第三消息给所述基 站,所述第三消息用于指示所述无线连接重建立完成;其中,所述第一消息包括以下至少之一:临时移动用户标识S-TMSI信息、小区标识信息、演进的小区全局标识信息、截断的S-TMSI信息、截断的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识、shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、截断的S-TMSI信息、截断的小区标识信息。
在第二实施方式中,所述处理器1201执行如下步骤:收到终端发送的第一消息,所述第一消息用于请求无线连接重建立;触发无线连接重建立后,向第二网元发送第四消息,所述第四消息用于请求获取终端上下文;其中,所述第一消息包括以下至少之一:S-TMSI信息,小区标识信息、演进的小区全局标识信息、截断的S-TMSI信息、截断的小区标识信息、C-RNTI、物理小区标识、shortMAC-I。
在第三实施方式中,所述处理器1201执行如下步骤:收到终端发送的第一消息,所述第一消息用于请求无线连接重建立;发送第四消息给第二网元,所述第四消息用于请求获取终端上下文;接收第二网元发送的第五消息,所述第五消息为所述第四消息的应答消息;其中,当终端采用控制面优化方式时,所述第五消息至少包括如下信息:消息类型、eNB UE X2AP ID、目标小区标识、GUMMEI、UE上下文信息。
在第四实施方式中,所述处理器1201执行如下步骤:从第二网元获取到终端上下文后,向第三网元发送第七消息,所述第七消息用于请求建立第一网元到第三网元的接口路径;其中,当终端采用CP优化方式时,所述第七消息至少包括如下信息:消息类型、eNB UE S1AP ID、Source MME UE S1AP ID、小区接入模式、Source MME GUMMEI。
本领域技术人员应当理解,图12所示的电子设备能够执行本公开任意 实施例中的连接重建立的方法步骤。
本公开实施例上述业务信令跟踪的装置如果以软件功能模块的形式实现并作为独立的产品销售或使用时,也可以存储在一个计算机可读取存储介质中。基于这样的理解,本公开实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本公开各个实施例所述方法的全部或部分。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read Only Memory)、磁碟或者光盘等各种可以存储程序代码的介质。这样,本公开实施例不限制于任何特定的硬件和软件结合。
相应地,本公开实施例还提供一种计算机存储介质,其中存储有计算机程序,该计算机程序用于执行本公开实施例的连接重建立方法。
本领域内的技术人员应明白,本公开的实施例可提供为方法、系统、或计算机程序产品。因此,本公开可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且,本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述,仅为本公开的较佳实施例而已,并非用于限定本公开的保护范围。
工业实用性
本公开实施例的技术方案,终端发送第一消息给基站,所述第一消息用于请求无线连接重建立;所述终端接收所述基站发送的第二消息,所述第二消息为所述第一消息的响应消息;所述终端发送第三消息给所述基站,所述第三消息用于指示所述无线连接重建立完成,如此,可以提供CP优化方式下无线链路失败触发的连接重建立的完整流程,减少信令负荷,提高连接重建立成功率。

Claims (39)

  1. 一种连接重建立方法,所述方法包括:
    终端发送第一消息给基站,所述第一消息用于请求无线连接重建立;
    所述终端接收所述基站发送的第二消息,所述第二消息为所述第一消息的响应消息;
    所述终端发送第三消息给所述基站,所述第三消息用于指示所述无线连接重建立完成;
    所述第一消息、第二消息及第三消息满足以下至少之一:
    所述第一消息包括以下至少之一:临时移动用户标识S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、短介质访问控制shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
  2. 根据权利要求1所述的连接重建立方法,其中,所述终端接收到所述第二消息后,发送第三消息给所述基站,并且,所述终端根据所述第二消息中是否携带所述指示信息或根据所述指示信息的取值,确定是否在第三消息中携带以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
  3. 根据权利要求1所述的连接重建立方法,其中,所述预设长度的S-TMSI信息或小区标识信息包括预设长度的部分S-TMSI信息或部分小区标识信息。
  4. 根据权利要求1所述的连接重建立方法,其中,终端在第一消息中包括所述识别信息的方式至少包括以下之一:
    终端使用S-TMSI信息和物理小区标识信息构造重建立标识;
    终端使用C-RNTI信息和小区标识信息构造重建立标识;
    终端使用C-RNTI信息、PCI信息以及shortMAC-I信息构造重建立标识;其中,shortMAC-I信息采用以下方式之一来构造:预设长度的S-TMSI信息、预设长度的小区标识信息。
  5. 一种连接重建立方法,所述方法包括:
    第一网元接收终端发送的第一消息,所述第一消息用于请求无线连接重建立;
    所述第一网元向所述终端发送第二消息,所述第二消息为所述第一消息的响应消息;
    所述第一网元接收所述终端的第三消息,所述第三消息用于指示所述无线连接重建立完成;
    所述第一网元触发无线连接重建立后,向第二网元发送第四消息,所述第四消息用于请求获取终端上下文,或者用于通知无线链路失败;
    所述第一消息、第二消息及第三消息满足以下至少之一:
    其中,所述第一消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
  6. 根据权利要求5所述的连接重建立方法,其中,当终端的接入层AS层安全未激活或终端没有有效的shortMAC-I信息时,所述方法还包括:
    第一网元在收到终端发送的第三消息后再向第二网元发送所述第四消息。
  7. 根据权利要求5所述的连接重建立方法,其中,当终端的AS层安全未激活或终端没有有效的shortMAC-I信息时,所述方法还包括:
    第一网元根据第一消息或第三消息确定所述第四消息待发送的目的网元,所述目的网元为一个或多个第二网元;
    或者,第一网元根据第一消息或第三消息构造第四消息,所述第四消 息包括以下至少之一:小区标识、终端标识、安全信息。
  8. 根据权利要求5所述的连接重建立方法,其中,所述第四消息包括以下至少之一:新消息、现有消息;所述现有消息为以下之一:无线链路失败指示消息、恢复UE上下文请求消息。
  9. 根据权利要求5所述的连接重建立方法,其中,所述方法还包括:
    所述第一网元通过第二消息指示终端在第三消息中是否包括所述第三消息中的识别信息。
  10. 根据权利要求5所述的连接重建立方法,其中,所述第一网元为终端向其发送请求无线连接重建立的基站,所述第二网元为终端发生无线链路失败的基站。
  11. 一种连接重建立方法,所述方法包括:
    第一网元收到终端发送的第一消息,所述第一消息用于请求无线连接重建立;
    第一网元发送第四消息给第二网元,所述第四消息用于请求获取终端上下文,或者用于通知无线链路失败;
    第一网元接收第二网元发送的第五消息;
    其中,当终端采用控制面优化方式时,所述第五消息至少包括如下信息:Old eNB UE X2AP ID、UE上下文信息。
  12. 根据权利要求11所述的连接重建立方法,其中,所述第五消息为以下之一:新消息、现有消息,所述现有消息为以下之一:切换请求消息、恢复UE上下文请求消息。
  13. 根据权利要求12所述的连接重建立方法,其中,当所述第五消息为所述现有消息时,第五消息中包括用于指示必选字段是否有效的指示信息。
  14. 根据权利要求13所述的连接重建立方法,其中,当所述第五消息为切换请求消息时,第一网元还发送第六消息,所述第六消息至少包括如下信息:Old eNB UE X2AP ID、New eNB UE X2AP ID。
  15. 根据权利要求14所述的连接重建立方法,其中,所述第六消息为 以下之一:新的消息、现有消息,所述现有消息为:切换请求确认消息。
  16. 根据权利要求15所述的连接重建立方法,其中,当所述第六消息为所述现有消息时,第六消息中包括用于指示必选字段是否有效的指示信息。
  17. 一种连接重建立方法,所述方法包括:
    第一网元从第二网元获取到终端上下文后,向第三网元发送第七消息,所述第七消息用于请求建立第一网元到第三网元的接口路径;
    其中,当终端采用控制面优化方式时,所述第七消息至少包括如下信息:eNB UE S1AP ID、Source MME UE S1AP ID。
  18. 根据权利要求17所述的连接重建立方法,其中,所述方法还包括:
    第一网元接收第三网元发送的第八消息,所述第八消息为所述第七消息的应答消息,其中,所述第八消息包括以下至少之一:MME UE S1AP ID、eNB UE S1AP ID。
  19. 根据权利要求17所述的连接重建立方法,其中,所述第七消息为以下之一:新的消息、第一现有消息、第二现有消息;所述第一现有消息为:路径选择请求消息,所述第二现有消息为:初始UE消息。
  20. 根据权利要求18所述的连接重建立方法,其中,所述第八消息为以下之一:新的消息、第一现有消息、第二现有消息;所述第一现有消息为:路径选择请求确认消息,所述第二现有消息为:建立连接指示消息。
  21. 根据权利要求19所述的连接重建立方法,其中,当所述第七消息为所述第一现有消息或第二现有消息时,第七消息中包括用于指示必选字段是否有效的指示信息。
  22. 根据权利要求20所述的连接重建立方法,其中,当所述第八消息为所述现有消息时,第八消息中包括用于指示必选字段是否有效的指示信息。
  23. 根据权利要求19所述的连接重建立方法,其中,当所述第七消息为初始UE消息时,扩展所述第七消息中的无线建立原因取值字段,使所述字段包括空中接口无线重建立原因;或者,当所述第七消息为新消息时, 在所述新的消息中通过预设字段包括空中接口无线重建立原因。
  24. 一种连接重建立装置,所述装置包括:
    通信单元,配置为发送第一消息给基站,所述第一消息用于请求无线连接重建立;接收所述基站发送的第二消息,所述第二消息为所述第一消息的响应消息;发送第三消息给所述基站,所述第三消息用于指示所述无线连接重建立完成;所述第一消息、第二消息及第三消息满足以下至少之一:
    所述第一消息包括以下至少之一:临时移动用户标识S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
  25. 根据权利要求24所述的连接重建立装置,其中,所述通信单元,还配置为接收到所述第二消息后,发送第三消息给所述基站,并且,所述终端根据所述第二消息中是否携带所述指示信息或根据所述指示信息的取值,确定是否在第三消息中携带以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。。
  26. 根据权利要求24所述的连接重建立装置,其中,终端在第一消息中包括所述识别信息的方式至少包括以下之一:
    终端使用S-TMSI信息和物理小区标识信息构造重建立标识;
    终端使用C-RNTI信息和小区标识信息构造重建立标识;
    终端使用C-RNTI信息、PCI信息以及shortMAC-I信息构造重建立标识;其中,shortMAC-I信息采用以下方式之一来构造:预设长度的S-TMSI信息、预设长度的小区标识信息。
  27. 一种连接重建立装置,所述装置包括:
    通信单元,配置为接收终端发送的第一消息,所述第一消息用于请求无线连接重建立;向所述终端发送第二消息,所述第二消息为所述第一消息的响应消息;接收所述终端的第三消息,所述第三消息用于指示所述无线连接重建立完成;触发无线连接重建立后,向第二网元发送第四消息,所述第四消息用于请求获取终端上下文,或者用于通知无线链路失败;所述第一消息、第二消息及第三消息满足以下至少之一:
    其中,所述第一消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息、小区无线网络临时标识C-RNTI、物理小区标识PCI、shortMAC-I;所述第二消息包括:指示终端上报S-TMSI信息或小区标识信息的指示信息;所述第三消息包括以下至少之一:S-TMSI信息、小区标识信息、演进的小区全局标识信息、预设长度的S-TMSI信息、预设长度的小区标识信息。
  28. 根据权利要求27所述的连接重建立装置,其中,当终端的AS层安全未激活或终端没有有效的shortMAC-I信息时,通信单元,配置为在收到终端发送的第三消息后再向第二网元发送所述第四消息。
  29. 根据权利要求27所述的连接重建立装置,其中,所述装置还包括:
    确定单元,配置为根据第一消息或第三消息确定所述第四消息待发送的目的网元,所述目的网元为一个或多个第二网元;
    构建单元,配置为根据第一消息或第三消息构造第四消息,所述第四消息包括以下至少之一:小区标识、终端标识、安全信息。
  30. 根据权利要求27所述的连接重建立装置,其中,所述装置还包括:
    指示单元,配置为通过第二消息指示终端在第三消息中是否包括所述第三消息中的识别信息。
  31. 一种连接重建立装置,所述装置包括:
    通信单元,配置为收到终端发送的第一消息,所述第一消息用于请求无线连接重建立;发送第四消息给第二网元,所述第四消息用于请求获取终端上下文,或者用于通知无线链路失败;接收第二网元发送的第五消息;
    其中,当终端采用控制面优化方式时,所述第五应消息至少包括如下 信息:Old eNB UE X2AP ID、UE上下文信息。
  32. 根据权利要求31所述的连接重建立装置,其中,所述第五消息为以下之一:新消息、现有消息,所述现有消息为以下之一:切换请求消息、恢复UE上下文请求消息。
  33. 一种连接重建立装置,所述装置包括:
    通信单元,配置为从第二网元获取到终端上下文后,向第三网元发送第七消息,所述第七消息用于请求建立第一网元到第三网元的接口路径;其中,当终端采用控制面优化方式时,所述第七消息至少包括如下信息:eNB UE S1AP ID、Source MME UE S1AP ID。
  34. 根据权利要求33所述的连接重建立装置,其中,所述通信单元,还配置为接收第三网元发送的第八消息,所述第八消息为所述第七消息的应答消息,其中,所述第八消息包括以下至少之一:MME UE S1AP ID、eNB UE S1AP ID。
  35. 一种电子设备,包括处理器以及存储有所述处理器可执行指令的存储器,当所述指令被处理器执行时,所述处理器执行权利要求1至4任一项所述的连接重建立方法步骤。
  36. 一种电子设备,包括处理器以及存储有所述处理器可执行指令的存储器,当所述指令被处理器执行时,所述处理器执行权利要求5至10任一项所述的连接重建立方法步骤。
  37. 一种电子设备,包括处理器以及存储有所述处理器可执行指令的存储器,当所述指令被处理器执行时,所述处理器执行权利要求11至16任一项所述的连接重建立方法步骤。
  38. 一种电子设备,包括处理器以及存储有所述处理器可执行指令的存储器,当所述指令被处理器执行时,所述处理器执行权利要求17至23任一项所述的连接重建立方法步骤。
  39. 一种计算机存储介质,所述计算机存储介质中存储有计算机可执行指令,该计算机可执行指令配置为执行权利要求1至4任一项所述 的连接重建立方法,或者权利要求5至10任一项所述的连接重建立方法,或者权利要求11至16任一项所述的连接重建立方法,或者权利要求17至23任一项所述的连接重建立方法。
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