WO2014101171A1 - 连接失败恢复方法、装置和系统 - Google Patents

连接失败恢复方法、装置和系统 Download PDF

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Publication number
WO2014101171A1
WO2014101171A1 PCT/CN2012/088007 CN2012088007W WO2014101171A1 WO 2014101171 A1 WO2014101171 A1 WO 2014101171A1 CN 2012088007 W CN2012088007 W CN 2012088007W WO 2014101171 A1 WO2014101171 A1 WO 2014101171A1
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WO
WIPO (PCT)
Prior art keywords
cell
terminal device
connection
base station
information
Prior art date
Application number
PCT/CN2012/088007
Other languages
English (en)
French (fr)
Inventor
李兆俊
汪巍崴
Original Assignee
富士通株式会社
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.)
Filing date
Publication date
Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to CN201280078049.8A priority Critical patent/CN104885551A/zh
Priority to EP12891198.9A priority patent/EP2941082A4/en
Priority to JP2015549932A priority patent/JP2016506169A/ja
Priority to KR1020157019899A priority patent/KR20150100839A/ko
Priority to PCT/CN2012/088007 priority patent/WO2014101171A1/zh
Publication of WO2014101171A1 publication Critical patent/WO2014101171A1/zh
Priority to US14/753,866 priority patent/US20150304904A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/19Connection re-establishment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/04Reselecting a cell layer in multi-layered cells
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W68/00User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005Transmission of information for alerting of incoming communication
    • 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
    • H04W36/0079Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices

Definitions

  • the present invention relates to the field of communications, and in particular, to a connection failure recovery method, apparatus, and system. Background technique
  • a terminal device in a Radio Resource Control (RRC) CONNECTED state may fail (such as Radio Link Failure (RLF), mobile handover failure (H0F). , Handover Failure), RRC link reconfiguration failure, etc.) After the occurrence, the RRC link re-establishment process is initiated to maintain and continue the existing RRC link.
  • RLF Radio Link Failure
  • H0F mobile handover failure
  • RRC link reconfiguration failure etc.
  • the purpose of the embodiments of the present invention is to provide a connection failure recovery method, apparatus, and system.
  • the terminal device connection reestablishment fails, the terminal device can be prevented from being disconnected from the connection state, and the impact on the service quality of the terminal device and the user experience quality is reduced.
  • a connection failure recovery method includes: when a terminal device fails to reestablish a connection during a connection reestablishment, the terminal device can perform one or more cell selections.
  • a second aspect of the present invention provides a connection failure recovery method, where the method includes: configuring, for a terminal device, indication information, where the indication information is used to indicate that the terminal device fails to perform connection reestablishment during connection reestablishment, The cell selection can be performed once or more times; the indication information is notified to the terminal device.
  • a third aspect of the embodiments of the present invention provides a connection failure recovery method, where the method includes: receiving information of one or more cell selections when a terminal device fails to perform connection reestablishment during connection reestablishment, and/or The number of times the cell is selected, and/or the identification information of the cell selected each time.
  • a fourth aspect of the present invention provides a method for recovering a connection failure, the method comprising: receiving, when a handover of a terminal device occurs, receiving indication information configured by the base station to which the terminal device belongs, configured for the terminal device, and/or Whether the terminal device is willing to perform one or more cell selections when the connection reestablishment fails during the connection reestablishment process, and the indication information is used to indicate that the terminal device can perform one or more times when the connection reestablishment fails during the connection reestablishment process.
  • Cell selection is used to indicate that the terminal device can perform one or more times when the connection reestablishment fails during the connection reestablishment process.
  • a fifth aspect of the embodiments of the present invention provides a connection failure recovery method, the method includes: receiving, by a terminal device, a reestablished target base station, a reconfiguration request message sent by the terminal device, and returning a connection reestablishment rejection message to the terminal device, and Sending a cell list to the terminal device, so that the terminal device performs one or more cell selections according to the cell list; wherein the cell list includes a cell that includes the terminal device context controlled by the target base station that is connected to the connection.
  • a sixth aspect of the present invention provides a connection failure recovery apparatus, where the apparatus includes: a cell selection unit, where the cell selection unit is used to perform a connection reconnection failure when the terminal device fails in the connection reestablishment process More than one cell selection.
  • a seventh aspect of the present invention provides a connection failure recovery apparatus, the apparatus comprising: an information configuration unit, configured to configure indication information for a terminal device, where the indication information is used to indicate that the terminal device is When connection reconnection fails during connection reestablishment, one or more cell selections can be performed;
  • the first notification unit is configured to notify the terminal device of the indication information.
  • An eighth aspect of the present invention provides a connection failure recovery apparatus, where the apparatus includes: a fifth receiving unit, configured to receive, when a terminal device fails to perform connection reestablishment during connection reestablishment, The information selected by the cell once or more, and/or the number of times the cell is selected, and/or the identification information of the cell selected each time.
  • a ninth aspect of the embodiment of the present invention provides a connection failure recovery apparatus, where the apparatus includes: a sixth receiving unit, configured to: when the terminal device is handed over, the receiving base station belongs to the cell base station to which the terminal device belongs The indication information of the terminal device configuration, and/or information about whether the terminal device is willing to perform one or more cell selections when the connection reestablishment fails during the connection reestablishing process, and the indication information is used to indicate When the terminal device fails to reestablish the connection during the connection reestablishment process, the terminal device can perform one or more cell selections.
  • a connection failure recovery apparatus includes: an eighth receiving unit, configured to receive a reconfiguration request message sent by a terminal device, and a fifth sending unit, The fifth sending unit is configured to return a connection reestablishment reject message to the terminal device, and send a cell list to the terminal device, so that the device on the terminal performs one or more cell selections according to the cell list; wherein the cell list includes the cell list A cell containing the context of the terminal device controlled by the target base station controlled by the connection.
  • a terminal device comprising the apparatus of the sixth aspect described above.
  • a base station comprising: the base station according to the seventh aspect of the present invention, wherein the base station includes the foregoing
  • a fourteenth aspect of the embodiments of the present invention provides a base station comprising the apparatus of the above ninth aspect, or the apparatus comprising the above tenth aspect.
  • a network system comprising: the terminal device of the above tenth aspect.
  • a sixteenth aspect of the embodiments of the present invention provides a computer readable program, wherein when the program is executed in a connection failure recovery device or a terminal device, the program causes a computer to fail in the connection recovery device or A connection failure recovery method as described in the first aspect above is performed in the terminal device.
  • a seventeenth aspect of the embodiments of the present invention provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the first one as in the connection failure recovery device or the terminal device The connection failure recovery method described in the aspect.
  • a computer readable program wherein when the program is executed in a connection failure recovery device or a base station, the program causes the computer to be in the connection failure recovery device or the base station A connection failure recovery method as described in any of the second to fifth aspects above is performed.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute in a connection failure recovery device or a base station as in the second to the A connection failure recovery method as described in any of the five aspects.
  • the terminal device may perform one or more cell selection processes, and perform corresponding connection re-establishment to prevent the terminal device from being disconnected from the connection state and reduce the service to the terminal device.
  • the impact of quality and user experience quality is as follows:
  • FIG. 2 is a flowchart of a connection failure recovery method according to Embodiment 2 of the present invention.
  • FIG. 3 is a flowchart of a connection failure recovery method according to Embodiment 3 of the present invention.
  • FIG. 5 is a flowchart of a connection failure recovery method according to Embodiment 5 of the present invention.
  • FIG. 6 is a flowchart of a connection failure recovery method according to Embodiment 7 of the present invention.
  • FIG. 7 is a flowchart of a connection failure recovery method according to Embodiment 8 of the present invention.
  • Figure 9 is a block diagram showing the structure of a connection failure recovery apparatus according to Embodiment 10 of the present invention.
  • Figure 10 is a block diagram showing the structure of a connection failure recovery apparatus according to Embodiment 11 of the present invention.
  • Figure 11 is a connection failure recovery device of Embodiment 14 of the present invention.
  • Figure 12 is a block diagram showing the structure of a connection failure recovery device in Embodiment 16 of the present invention.
  • Figure 13 is a block diagram showing the structure of a connection failure recovery apparatus according to Embodiment 18 of the present invention
  • Figure 14 is a block diagram showing the configuration of a connection failure recovery apparatus in Embodiment 20 of the present invention. detailed description
  • the terminal device In the existing mechanism, after the failure occurs (such as radio link failure, mobile handover failure, RRC link reconfiguration failure, etc.), the terminal device maintains and continues the existing RRC connection through the radio resource control (RRC) connection re-establishment process.
  • RRC radio resource control
  • a suitable cell such as performing random access, then transmitting an RRC connection reestablishment request message, waiting for an RRC connection reestablishment message or an RRC connection reestablishment reject message
  • the RRC connection reestablishment process may fail due to various reasons, causing the terminal to leave the RRC-CONNECTED state, further seriously affecting the terminal service quality and the user experience quality (QoE). .
  • connection failure recovery method RRC connection re-establishment as an example.
  • connection failure recovery method according to Embodiment 1 of the present invention.
  • the method includes:
  • Step 101 The terminal device can perform one or more cell selections when the connection reestablishment fails during the connection reestablishment process;
  • the connection re-establishment failure may include the following situations: 1) in the connection re-establishment process, the selected cell becomes no longer suitable, or the random access fails, or at a specified time If the RRC connection reestablishment message is not received within the specified time (that is, the RRC connection reestablishment message is not received when the T301 times out), the connection reestablishment fails. 2) The connection reestablishment failed when the rebuild request is rejected;
  • the terminal device may perform one or more cell selections, so that the terminal device may have multiple opportunities to perform the connection re-establishment process, and solve the problems existing in the existing mechanism;
  • Step 102 After performing each cell selection in one or more cell selection processes, perform a subsequent connection re-establishment process on the selected cell (that is, a process performed after selecting a suitable cell in the connection re-establishment process);
  • connection re-establishment process is performed on the selected cell, and the connection re-establishment signaling after the cell selection is similar to the prior art, and details are not described herein again.
  • the terminal device may perform one or more cell selection processes and perform corresponding connection re-establishment to prevent the terminal device from being disconnected from the connection state, thereby reducing service quality and user experience quality of the terminal device. influences.
  • the RRC connection reestablishment failure is respectively as follows: 1) The selected cell becomes no longer suitable or the random access fails or the selected cell is not selected within the specified time or the RRC connection reestablishment is not received within the specified time. Message. 2) Reconstruction request is rejected as an example.
  • connection failure recovery method according to Embodiment 2 of the present invention. This method can be used in the case where all connection reestablishment fails. For the RRC connection reestablishment failure, it can be used in the case where the above two connection reestablishment fails.
  • the method includes:
  • Step 201 Receive indication information that is configured by the network side for the terminal device.
  • the network side may be a base station where the terminal device is located before the terminal device fails (such as a radio link failure, a mobile handover failure, an RRC link reconfiguration failure, etc.); for example, when a mobile handover failure occurs,
  • the base station on the network side may be a source base station;
  • the indication information is used to indicate that the terminal device can perform one or more cell selections when the connection reestablishment fails during the connection reestablishment process; for example, instructing the terminal device to perform one or more cell selections within a predetermined time, or perform a predetermined reservation. Cell selection of times;
  • the base station may configure the predetermined time and/or the predetermined number of times, such that the predetermined time and/or the predetermined number of times may also include notifying the terminal device in the indication message; further, the predetermined time and/or predetermined The number of times can also be sent by other messages;
  • the predetermined time and/or the predetermined number of times may also be configured by the terminal device
  • the terminal device can select one of them to perform cell selection according to a predetermined manner.
  • Step 202 When the connection reestablishment fails, the terminal device performs cell selection according to the indication information configured by the network side.
  • the terminal device when the connection reestablishment fails, the terminal device will be disconnected from the connected state, but in this embodiment, the cell selection may be performed once or more according to the indication information;
  • the terminal device may perform one or more cell selections within a predetermined time according to the indication information, or perform a predetermined number of cell selections;
  • step 202 cell selection is first performed.
  • Step 203 Perform a subsequent connection re-establishment process on the selected cell.
  • Step 204 Determine whether the connection reconstruction succeeds or fails; when the reconstruction connection is successful, the connection fails to recover, and the process ends; otherwise, step 205 is performed.
  • Step 205 in step 204, after the connection reestablishment fails, further determining whether the number of times of cell selection exceeds a predetermined number of times, or whether the time exceeds a predetermined time; when the determination result is yes, the process ends; when the judgment result is no , performing step 206;
  • the terminal device can set a timer or a counter, and start timing or counting when the connection reestablishment fails.
  • Step 206 In step 205, if the predetermined time or the predetermined number of times is not exceeded, the terminal device performs cell selection again, and then performs the subsequent step 203. Then, and so on, until the connection is rebuilt.
  • the terminal device may perform one or more cell selection processes at a predetermined time, or perform a predetermined number of cell selections to prevent the terminal device from being disconnected from the connection state, and reducing service to the terminal device.
  • the impact of quality and user experience quality is not limited to, but not limited to, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi Protectet Access (WPA) selection processes, or perform a predetermined number of cell selections to prevent the terminal device from being disconnected from the connection state, and reducing service to the terminal device.
  • step 201 is an optional step. In the case that the terminal device has received and stored the indication information, the step 201 may be omitted.
  • the method may further include: the terminal device starts to count or count when the connection reestablishment fails.
  • the terminal device can perform one or more cell selection procedures before the timer expires or before the counter reaches the maximum value.
  • the method further includes: reporting, to the base station of the selected cell, the number of times the cell selection is performed once or more, and/or the cell selection is performed, and/or each Identification information of the cell selected by the second time.
  • the foregoing information that is sent to the base station of the selected cell for one or more cell selections, and/or for cell selection, and/or the identification information of the selected cell may be reported to the base station by using an RRC reestablishment request message. , but can be reported through other news.
  • the base station of the selected cell keeps the context of the terminal device (UE Context) for a certain period of time;
  • the information reported by the terminal device is used in a performance optimization mechanism related to a self-optimizing network (SON).
  • the network side can adjust the handover parameter according to the information reported by the terminal device, for example, when the terminal reports the After multiple cell selections are made, the network side can adjust the handover parameters from the source cell to each selected cell.
  • the method further includes: sending, to the network side, information about whether the cell selection is to be performed once or more times.
  • the base station that is, the terminal device may determine to maintain the context of the terminal device for a certain period of time according to the information when the terminal device fails (such as radio link failure, mobile handover failure, and RRC link reconfiguration failure), and / or cause the network side to send the indication information in step 201 to the device terminal according to the information.
  • the step of transmitting information to the network side as to whether or not to perform one or more cell selections is not limited to being transmitted before step 201, and may be transmitted at any time after step 201. In this way, the network side determines, according to the information, that the context of the terminal device is maintained for a certain period of time.
  • the terminal device may perform one or more cell selection processes according to the preset indication information, to prevent the terminal device from being disconnected from the connection state, and reducing the impact on the service quality of the terminal device and the user experience quality.
  • FIG. 3 is a flowchart of a connection failure recovery method according to Embodiment 3 of the present invention.
  • connection reestablishment failure caused by the RRC reestablishment request being rejected during the RRC connection reestablishment process, an example will be described.
  • the method includes:
  • Step 301 In the connection re-establishment process, the terminal device sends a connection re-establishment request to the network side.
  • the terminal device sends the connection re-establishment request to the base station of the cell selected in the cell selection process, where the connection is The rebuild request can be an RRC connection reestablishment request.
  • Step 302 Receive a connection reestablishment reject message returned by the network side, and obtain a cell list.
  • the request after receiving the connection reestablishment request on the network side, the request may be accepted or rejected, and if the request is rejected, a connection reestablishment rejection message is sent to the terminal device, so that the terminal device receives the selected cell.
  • the cell connection list may be included in the connection reestablishment reject message, so that the terminal device can obtain the cell list; wherein the cell list includes a small area controlled by the base station of the selected cell that includes the terminal device.
  • the area, corresponding to the cell indicated by the additionalReestabinfoList in the AS-Context see TS 36.331 vll.l.
  • the cell list may also include a cell that is controlled by another base station and includes a context of the terminal device; thus, all the cells that have been prepared are included in the connection reestablishment reject message (ie, the base station controlling the cell owns the context of the terminal device) , to help the terminal device find a suitable cell, and successfully establish a connection;
  • the connection reestablishment reject message ie, the base station controlling the cell owns the context of the terminal device
  • connection reestablishment reject message may further include a predetermined time or a predetermined number of times to perform one or more cell selections.
  • the predetermined time or the predetermined number of times is set by the base station of the selected cell.
  • the predetermined time or the predetermined number of times is configured by the terminal device (no need to be configured by signaling); in this embodiment, the cell list may also be transmitted in other messages, not limited to the connection reestablishment reject message.
  • Step 303 The terminal device selects a cell from the cell list.
  • Steps 304 to 306 are similar to steps 303 and 305 in Embodiment 2, and are not described herein again.
  • step 307 if the result of the determination in step 306 is no, the cell selection is performed again, that is, the cell is selected from the cell list.
  • the terminal device may perform one or more cell selection processes according to the cell list returned by the network side, thereby preventing the terminal device from being disconnected from the connection state, and reducing the terminal.
  • connection reestablishment failures such as the connection reestablishment failure for the above 1) and 2) during the RRC connection re-establishment process.
  • the terminal device fails (such as radio link failure, mobile handover failure, RRC link reconfiguration failure, etc.)
  • the base station side the base station indicated when the handover fails is the source base station side of the handover.
  • the method includes:
  • Step 401 Configure indication information for the terminal device.
  • the indication information is used to indicate that the terminal device can perform one or more cell selections when the connection reestablishment fails during the connection reestablishment process;
  • the network side that is, the terminal device fails (eg, radio link failure, mobile handover failure, RRC link reconfiguration)
  • the base station in which the previous station is located may configure the indication information for the terminal device that is performing the delay tolerance service and is in the connected state (such as the C_CO ECTED state);
  • Step 402 notifying the terminal device of the indication information;
  • the terminal device may perform one or more cell selection processes when the connection reestablishment fails, to avoid disconnection from the connection state, and reduce the impact on the service quality of the terminal device and the user experience quality.
  • the method may further include: receiving information about whether the terminal device is willing to perform one or more cell selections. And when receiving the information returned by the terminal device is information that is willing to perform one or more cell selections, the method further includes: maintaining the context of the terminal device within a predetermined time; or if the received information is willing to be performed once or once When the information selected by the cell is used, step 401 is performed, that is, the terminal device is configured with the indication information.
  • the method may further include: sending the configured indication information to the target base station during the mobile handover process.
  • the indication information may be sent to the target base station as part of the terminal device context or separately sent to the target base station.
  • information about whether the terminal device is willing to perform one or more cell selections may be sent to the target base station.
  • the network side may configure the indication information for the terminal device.
  • the cell selection process may be performed once or more times according to the indication information, so as to prevent the terminal device from being disconnected from the connection state, and reducing the terminal device. The impact of the quality of service of the equipment and the quality of the user experience.
  • Figure 5 is a flow chart showing a method for recovering connection failure according to Embodiment 5 of the present invention.
  • connection reestablishment failures such as the connection reestablishment failure for the above 1) and 2) during the RRC connection re-establishment process.
  • the connection reestablishment of the terminal device fails, when the cell selection is performed once or more times, the base station side of the selected cell is used.
  • the method includes:
  • Step 501 Receive information of one or more cell selections, and/or number of times of cell selection, and/or identification information of a cell selected each time when the terminal device fails to perform connection reestablishment in the connection reestablishment process;
  • the cell selection process may be performed one or more times according to the preset indication information.
  • the terminal device reports the information of the cell selection once or more to the network.
  • the side that is, the base station of the selected cell
  • the selected cell base station may be a base station when the terminal device fails, or may be another base station.
  • Step 502 Maintain a context of the terminal device.
  • the network side may maintain the context of the terminal device for a certain period of time (UE context).
  • UE context the context of the terminal device for a certain period of time
  • Step 503 Perform performance optimization according to the received information that is performed once or more times of cell selection.
  • the network side may use the information in a performance optimization mechanism related to the SON, such as adjusting a handover parameter of the cell.
  • step 502 and step 503 are not limited thereto, and may be performed simultaneously or in sequence.
  • Embodiment 6 of the present invention further provides a connection failure recovery method. For all connection reestablishment failures, such as the connection reestablishment failure for the above 1) and 2) during the RRC connection re-establishment process. The terminal device switches from the base station before the failure occurs to the target base station side.
  • the method includes:
  • the target base station When the terminal device is switched, the target base station receives the indication information that is configured by the cell base station to which the terminal device belongs, and is configured to indicate that the terminal device can perform the connection re-connection failure during the connection reestablishment process. More than one cell selection. In this way, after receiving the indication information, the target base station does not need to configure the indication information for the terminal device.
  • the target base station may further receive information about whether the terminal device sent by the cell base station to which the terminal device belongs is willing to perform one or more cell selections. In this way, the target base station can determine, according to the information, whether the indication information needs to be configured for the user equipment.
  • the cell base station to which the terminal device belongs may be a source base station.
  • FIG. 6 is a flow chart showing a method for recovering connection failure according to Embodiment 7 of the present invention.
  • the method includes: Step 601: The target device connected to the reestablished terminal device receives the connection reestablishment request message sent by the terminal device, where the target base station may be the base station where the terminal device is located before the failure occurs, or Other base stations.
  • Step 602 Return a connection reestablishment rejection message to the terminal device, and send a cell list to the terminal device, where the cell list includes a cell that is controlled by the target base station that is connected to the connection and includes the terminal device context.
  • the cell list may be sent to the terminal device in the connection reestablishment reject message, or may be separately sent to the terminal device by other messages. In this way, after obtaining the cell list, the terminal device can select a suitable cell from the cell list.
  • connection reestablishment rejection message may further include a predetermined time and/or a predetermined number of times to perform one or more cell selections after the connection reestablishment fails, and the predetermined time and/or the predetermined number of times may also pass.
  • Other messages inform the terminal device.
  • the cell list may further include a cell that is controlled by another base station and includes a context of the terminal device; thus, all the preparations are included in the connection reestablishment rejection message.
  • a good cell ie, the base station controlling the cell owns the context of the terminal device to help the terminal device find a suitable cell and successfully establish a connection.
  • the method may further include: receiving, by the other base station, the cell controlled by the other base station that includes the terminal device context; and the cell list further includes a cell that is controlled by another base station and includes the terminal device context.
  • the network side may send a cell list to the terminal device, where the cell list may include the target base station, and/or a cell controlled by another base station, including the context of the terminal device, In this way, the terminal device that obtains the cell list selects a suitable cell from the cell list, and prevents the terminal device from being disconnected from the connection state, thereby reducing the impact on the service quality of the terminal device and the user experience quality.
  • Figure 7 is a flow chart showing a method for recovering a connection failure according to Embodiment 8 of the present invention.
  • the connection reestablishment fails for the above 1) and 2).
  • the base station where the terminal device is located is the source base station
  • the selected cell base station is the base station of the selected cell in the cell selection process during the connection reestablishment process.
  • Step 701 The network side receives information about whether the terminal device is willing to perform one or more cell selections.
  • Step 702 Configure indication information for the terminal device.
  • the indication information is used to indicate that the terminal device can perform one or more cell selections when the connection reestablishment fails during the connection reestablishment process;
  • the base station where the terminal device is located may be a terminal device that is performing the delay tolerance service and is in the connected state (such as the RRC_CO ECTED state). Configure this indication.
  • Step 703 When receiving information that the terminal device sends information that is willing to perform one or more cell selections, keep the context of the terminal device, and/or use it in performance optimization related to SON;
  • the source base station may determine the time for maintaining the context of the terminal device according to actual conditions.
  • Step 704 Notify the terminal device of the indication information.
  • Step 705 The terminal device receives the indication information.
  • Step 706 During the mobile handover process, the source base station configures the indication information and/or the received terminal is Whether information that is willing to perform one or more cell selections is sent to the target base station;
  • the source base station may send the indication information, and/or whether it is willing to perform one or more cell selections as part of the terminal device context.
  • the target base station is sent to the target base station separately, so that the target base station does not need to configure the indication information for the terminal device.
  • the above step 701 is an optional step
  • Steps 701 and 702 may be performed in an order, so that the network side may configure the indication information for all terminal devices that perform delay services.
  • step 701 may be performed first, and then step 702 is performed, so that the network side may receive the information that the terminal device is willing to perform one or more cell selections.
  • the indication information is configured for the terminal device;
  • Step 703 is an optional step, step 703 and step 702 are interchangeable; step 704 can be interchanged with step 703; step 706 is an optional step, and steps 703 to 706 are performed in an arbitrary order.
  • the terminal device in the RRC_CO ECTED state fails (such as a radio link failure, a mobile handover failure, an RRC connection reconfiguration failure, etc.), for example, a link failure occurs, and the terminal device avoids the link.
  • the RRC_CO ECTED state is left, the connection re-establishment process is initiated.
  • Step 707 the terminal device initiates a connection re-establishment process and the connection reestablishment fails.
  • the terminal device initiates a connection re-establishment process, as described in TS36.331 vl l.1.0, and the content thereof is hereby incorporated herein.
  • Step 708 The terminal device performs one or more cell selection processes according to the indication information, and then performs subsequent connection re-establishment signaling until the connection is successfully established.
  • step 708 is similar to steps 202 to 206 of Embodiment 2, and details are not described herein;
  • the terminal device may also report to the base station of the selected cell that the cell selection is performed once or more times, and/or the cell selection is performed, and/or The identification information of the selected cell may be reported to the base station by using an RRC reestablishment request message, but may be reported by other messages.
  • the base station of the selected cell may maintain the context of the terminal device for a predetermined time, which may be determined by the base station of the selected cell according to actual conditions.
  • Step 710 The base station of the selected cell may also use the foregoing information reported by the terminal device in a performance optimization mechanism related to the SON.
  • the network side may adjust the handover parameter according to the information reported by the terminal device.
  • the terminal device may perform one or more cell selections according to the indication information configured by the network side, thereby avoiding disconnection from the connection state and reducing the impact on the service quality and user experience quality of the terminal device.
  • Figure 8 is a flow chart showing a method for recovering a connection failure according to Embodiment 9 of the present invention.
  • the reconstruction is performed by the RRC connection, and the connection reestablishment failure is rejected as an example of the connection reestablishment request being rejected.
  • the base station in which the receiving terminal device sends the connection reestablishment request is the target base station, and the base station where the terminal device is located before the failure occurs is referred to as the source base station.
  • the terminal device in the RRC_CO ECTED state fails (such as a radio link failure, a mobile handover failure, an RRC connection reconfiguration failure, etc.), for example, a link failure occurs, and the terminal device avoids the link.
  • the RRC_CO ECTED state is left, the connection re-establishment process is initiated.
  • Step 801 The terminal device initiates a connection re-establishment process.
  • the RRC connection re-establishment process is as described in TS36.331 vl l.1.0, and the content is hereby incorporated herein.
  • the terminal device first performs cell selection; after selecting a suitable cell, performs a signaling procedure for the RRC connection reestablishment request in the cell (eg, performing random access, and then the terminal device sends a connection to the target base station) Reestablishing the request message, and the terminal device receives the connection reestablishment reject message returned by the target base station according to the request message;
  • the connection reestablishment reject message may include a cell list;
  • the target base station may be a source base station, or may be another base station. As shown in FIG. 8, in this embodiment, the target base station is another base station;
  • connection reestablishment reject message is an RRC connection reestablishment reject message
  • connection reestablishment reject message further includes a cell list, where the cell list includes a cell that is controlled by the target base station and includes the terminal device context;
  • the cell list is sent to the terminal device in the connection reestablishment rejection message, but is not limited thereto, and the cell list may also be separately sent to the terminal device by using other messages.
  • Step 802 The terminal device receives the connection reestablishment reject message and obtains a cell list.
  • Step 803 The terminal device performs one or more cell selections according to the cell list, and then performs a subsequent connection re-establishment process on the selected cell.
  • the step 803 is similar to the steps 303 to 307 of the embodiment 3, and details are not described herein again.
  • the terminal device may select a suitable cell from the cell list, such as selecting another target base station.
  • the cell list may further include a cell that is controlled by another base station and includes a context of the terminal device; thus, all the cells that have been prepared are included in the connection reestablishment rejection message (ie, The base station controlling the cell has the context of the terminal device to help the terminal device find a suitable cell and successfully establish a connection.
  • the method may further include the step 800: the target base station receives, by the other base station, the cell that is controlled by the other base station and includes the terminal device context; and the foregoing cell list further includes that the other base station controls the terminal device The context of the cell.
  • the above step 800 is an optional step.
  • the cell list can be exchanged between the base stations by using the X2 message, wherein the base station exchanges a complete list of cells prepared in the mobile handover preparation process, and the list includes, in particular, all of the selected target base stations. A prepared cell.
  • the source base station may send a handover preparation message to multiple target base stations, and each switch preparation message includes a list of cells prepared in the base station that receives the message. Thereafter, each target base station can send a list of prepared cells that it controls to other base stations (such as a source base station or other target base stations) through X2 messages. Similarly, the source base station (or a target base station) can also According to the collected cell list of other target base stations, a complete list of the cells prepared under all target base stations is sent to the target base station in the figure.
  • the prepared cell refers to a cell that includes a terminal context.
  • the network side may prepare all the prepared cells in the candidate target base stations for the terminal device.
  • the network device may perform the cell list according to the network side obtained from the network side. Or more than one cell selection process, to avoid the terminal device from being disconnected from the connection state, and reducing the impact on the service quality of the terminal device and the quality of the user experience.
  • the embodiment of the invention further provides a connection failure recovery device, a terminal device and a base station.
  • a connection failure recovery device As described in the examples below. Since the connection failure recovery device, the terminal device, and the base station solve the problem similarly to the foregoing method based on the connection failure recovery device, the terminal device, and the base station, the implementation of the device, the terminal device, and the base station can be referred to the implementation of the method, and the method is repeated. I won't go into details here.
  • Figure 9 is a block diagram showing the configuration of a connection failure recovery apparatus according to a tenth embodiment of the present invention.
  • the device 900 includes: a cell selection unit 901, configured to perform one or more cell selections when the terminal device fails to perform connection reestablishment during connection reestablishment. In this way, the terminal device can be prevented from being disconnected from the connection state, and the impact on the service quality of the terminal device and the quality of the user experience can be reduced.
  • the apparatus 900 may further include a connection reconstruction unit 902 for performing a connection re-establishment process on the selected cell after each cell selection.
  • the connection reestablishment failure when the RRC connection is reestablished, includes: the selected cell becomes no longer suitable, or the random access fails, or the selected cell is not selected within a specified time, or is specified.
  • Figure 10 is a block diagram showing the configuration of a connection failure recovery device in accordance with an eleventh embodiment of the present invention.
  • the case where the terminal device performs cell selection according to the indication information is described as an example, and is applicable to all cases where connection reestablishment fails.
  • the device 1000 On the terminal device side, as shown in FIG. 10, the device 1000 includes: a cell selection unit 1001 and a connection reconstruction unit 1002. Its function is similar to that of Embodiment 10, and will not be described here.
  • the device 1000 further includes a first receiving unit 1006, where the first receiving unit 1006 is configured to receive indication information configured by the network side for the terminal device;
  • the network side is the base station where the terminal device is located before the failure (such as radio link failure, mobile handover failure, RRC link reconfiguration failure, etc.), for example, the base station indicated by the mobile handover failure is the source base station.
  • failure such as radio link failure, mobile handover failure, RRC link reconfiguration failure, etc.
  • the cell selection unit 1001 is configured to perform one or more cell selections according to the indication information configured by the network side, where the indication information is used to indicate that the terminal device can perform cell selection one time or more.
  • the instructing the terminal device to perform one or more cell selections refers to: instructing the terminal device to perform one or more cell selections within a predetermined time, or perform a predetermined number of cell selections.
  • the predetermined time and/or the predetermined number of times may be configured by the network side, or may be configured by the terminal device.
  • the device 1000 may include a first configuration unit (not shown) for configuring the predetermined time and/or the predetermined number of times.
  • the device 1000 may include a third receiving unit (not shown) for receiving the predetermined time and/or the predetermined number of times of the network side configuration.
  • the predetermined time and/or the predetermined number of times may be included in the indication information, and a separate message transmission may also be used.
  • the network side refers to the base station where the terminal device is located before the failure occurs.
  • the apparatus 1000 may further include a timer 1003 (not shown) for starting timing when the connection reconstruction fails; and/or,
  • the device 1000 can also include a counter 1004 for counting the counts when the connection rebuild fails.
  • the apparatus 1000 further includes a first sending unit 1005, and the first sending unit 1005 is configured to report to the base station of the selected cell one or more times after the cell selecting unit 1001 performs one or more cell selections.
  • the apparatus 1000 further includes a second transmitting unit 1007, and the second transmitting unit 1007 is configured to send information to the network side whether it is willing to perform one or more cell selections.
  • the second transmitting unit 1007 is configured to send information to the network side whether it is willing to perform one or more cell selections.
  • the context of the terminal device can be maintained for a predetermined time.
  • Embodiment 11 of the present invention is as described in Embodiments 2 and 8, and details are not described herein again.
  • Embodiment 12 of the present invention also provides a connection failure recovery device.
  • connection failure recovery device When the connection reestablishment failure is rejected for the rebuild request, its composition is similar to that of Embodiment 11, and different indications are explained here.
  • the first receiving unit 1006 may not be included;
  • the cell selection unit is configured to perform one or more cell selections according to the received cell list, where the cell list includes a cell that includes the context of the terminal device controlled by the target base station of the reestablished connection;
  • the cell selection unit includes: a second receiving unit and a selecting unit (not shown); wherein the second receiving unit is configured to receive a cell list from the target base station of the reestablished connection; wherein the cell list includes The cell that controls the context of the terminal device controlled by the target base station of the reestablishment connection, and the target base station may send the connection re-establishment rejection message to the terminal device.
  • the selection unit is configured to select a suitable cell from the list of cells.
  • the cell list also includes cells controlled by other base stations including the context of the terminal device.
  • the working process of Embodiment 12 of the present invention is as described in Embodiments 3 and 9, and details are not described herein again.
  • connection failure recovery device may also be a combination of Embodiment 11 and Embodiment 12.
  • the first transmitting unit 1005, the second transmitting unit 1007, and the timer 1003 or the counter 1004 are optional components.
  • the terminal device may perform one or more cell selections according to the indication information configured by the network side or the cell list sent by the network side, thereby avoiding disconnection from the connection state and reducing the service quality of the terminal device. And the user feels the impact of quality.
  • Embodiment 13 of the present invention further provides a terminal device, which may be the device described in Embodiments 10 to 12.
  • Figure 11 is a diagram showing the connection failure recovery apparatus of the embodiment 14 of the present invention.
  • the terminal device On the source base station side, that is, when the terminal device fails, the terminal device is located on the base station side.
  • the device 1100 includes an information configuration unit 1101 and a first notification unit 1102.
  • the information configuration unit 1101 is configured to configure, for the terminal device, indication information, where the indication information is used to indicate that the terminal device occurs during the connection re-establishment process. When the connection reestablishment fails, one or more cell selections can be made.
  • the first notification unit 1102 is configured to notify the terminal device of the indication information.
  • the indication information may further include a predetermined time and/or a predetermined number of times to perform cell selection.
  • the predetermined time and/or the predetermined number of times may be sent to the terminal device by using other messages.
  • the device 1100 may further include a second notification unit (not shown) for using the second notification unit. The terminal device is notified of the predetermined time and/or the predetermined number of times.
  • the device 1100 further includes a fourth receiving unit 1103, and the fourth receiving unit 1103 is configured to receive information about whether the terminal device is willing to perform one or more cell selections.
  • the device 1100 further includes: a first processing unit 1104, configured to: when the fourth receiving unit 1103 receives information that the information returned by the terminal device is willing to perform one or more cell selections, The context of the terminal device is maintained for a predetermined time.
  • the information configuration unit 1101 may further configure the indication information when the fourth receiving unit 1103 receives the information that is willing to perform one or more cell selections.
  • the device 1100 further includes a third sending unit 1105, and the third sending unit 1105 is configured to: when the mobile switching is performed, the configured indication information and/or whether the received terminal is willing to perform one or more cells at a time.
  • the selected information is sent to the target base station. In this way, the target base station does not need to configure the indication information of the terminal device.
  • the indication information and information whether it is willing to perform one or more cell selections may also be transmitted through different transmitting units.
  • the fourth receiving unit 1103, the first processing unit 1104, and the third sending unit 1105 are optional components, and details are not described herein again.
  • the base station may configure the indication information for the terminal device before the failure occurs, so that when the connection reestablishment fails, the terminal device performs one or more cell selections according to the indication information, so as to avoid disconnection from the connection state. Reduce the impact on the quality of service of the terminal equipment and the quality of the user experience.
  • the embodiment of the present invention further provides a base station, where the base station includes the apparatus described in Embodiment 14, and the base station is a base station where the terminal equipment is located before the failure occurs.
  • Figure 12 is a block diagram showing the configuration of a connection failure recovery apparatus in Embodiment 16 of the present invention. After the terminal device fails to reestablish the connection, when the cell selection is performed, the base station side of the selected cell is used.
  • the apparatus 1200 includes: a fifth receiving unit 1201, where the fifth receiving unit 1201 is configured to receive information that the terminal device performs one or more cell selections when a connection reestablishment fails during connection reestablishment, and/or The number of times the cell is selected, and/or the identification information of the cell selected each time.
  • the device may maintain the terminal device context for a predetermined time based on the information, or use the information in a performance optimization mechanism.
  • the apparatus 1200 further includes a second processing unit 1202 for maintaining the context, and/or performance optimization of the terminal device based on the received information for performing one or more cell selections.
  • the embodiment 17 of the present invention further provides a base station, where the base station includes the apparatus described in Embodiment 16, where the connection reestablishment fails, and the terminal device performs one or more cell selection according to the indication information configured by the network side, At this time, the base station of the cell selected by the terminal device is the base station of Embodiment 17 of the present invention.
  • Figure 13 is a block diagram showing the configuration of a connection failure recovery apparatus in Embodiment 18 of the present invention.
  • the device 1300 includes:
  • a sixth receiving unit 1301 where the sixth receiving unit 1301 is configured to receive, when the terminal device is switched, the indication information that is sent by the cell base station to which the terminal device belongs, configured for the terminal device, where the indication information is used to indicate the end When the end device fails to reestablish the connection during the connection reestablishment process, it can perform one or more cell selections.
  • the sixth receiving unit 1301 is further configured to receive, by the cell base station to which the terminal device belongs, information about whether the terminal is willing to perform one or more cell selections after the connection reestablishment fails.
  • the apparatus 1300 further includes a seventh receiving unit 1302, and the seventh receiving unit 1302 is configured to receive a predetermined time and/or a predetermined number of times for one or more cell selections sent by the cell base station to which the terminal device belongs.
  • the embodiment of the present invention provides a base station, where the base station includes the apparatus described in Embodiment 18, and the connection reestablishment fails in the terminal device, for example, the connection reestablishment failures in the foregoing embodiments 1) and 2) fail.
  • the terminal device receives the indication information configured by the network side (such as the base station before the failure occurs), and when the terminal device switches from the source base station (that is, the base station before the failure occurs) to the target base station, the source base station sends the indication information to the source base station.
  • the target base station may further send, to the target base station, information about whether the terminal device is willing to perform one or more cell selections after the connection fails, or send the predetermined time and/or the predetermined number of times to the target base station.
  • the target base station is the base station of Embodiment 19 of the present invention.
  • Figure 14 is a block diagram showing the configuration of a connection failure recovery apparatus in Embodiment 20 of the present invention.
  • the apparatus 1400 includes: an eighth receiving unit 1401 and a fifth sending unit 1402, where the eighth receiving unit 1401 is configured to receive the retransmission sent by the terminal device. a request message; the fifth sending unit 1402 is configured to return a connection reestablishment rejection message to the terminal device, and send a cell list to the terminal device, where the cell list includes a cell controlled by the target base station that is connected to the connection and includes the terminal device context .
  • the device 1400 further includes: a ninth receiving unit 1403, where the ninth receiving unit 1403 is configured to receive, by the other base station, the cell that is controlled by the other base station and includes the terminal device context;
  • the foregoing cell list further includes a cell controlled by another base station and including the terminal device context.
  • the apparatus 1400 may further include a sixth transmitting unit (not shown) for transmitting to the terminal device a predetermined time and/or a predetermined number of times to perform one or more cell selections.
  • a sixth transmitting unit (not shown) for transmitting to the terminal device a predetermined time and/or a predetermined number of times to perform one or more cell selections.
  • the predetermined time or the predetermined number of times may also be included in the reconstruction rejection message, by the fifth sending unit.
  • Embodiment 21 of the present invention further provides a base station, where the base station includes the apparatus described in Embodiment 20. If the connection reestablishment fails, the terminal device receives the cell list sent by the network side (such as the target base station), and the terminal device performs cell selection according to the cell list. At this time, the target base station The base station of Embodiment 21 of the present invention.
  • Embodiment 22 of the present invention further provides a network system, which includes the terminal device described in Embodiment 13. Furthermore, the system may further include the base station described in Embodiment 15, and/or the base station described in Embodiment 17, and/or the base station described in Embodiment 19, and/or the base station described in Embodiment 21.
  • the network system workflow may refer to the embodiments in FIG. 8 and FIG. 9, and details are not described herein again.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a connection failure recovery device or a terminal device, the program causes the computer to execute in the connection failure recovery device or the terminal device as in Embodiments 1 to 3 The connection failure recovery method described.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to perform the connection as described in Embodiments 1 to 3, 8, and 9 in the connection failure recovery device or the terminal device. Failure recovery method.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a connection failure recovery device or a base station, the program causes the computer to perform the connection as described in 4 to 9 in the connection failure recovery device or the base station Failure recovery method.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to perform the connection failure recovery method described in Embodiments 4 to 9 in a connection failure recovery device or a base station.
  • the cell selection process may be performed once or more times to prevent the terminal device from being disconnected from the connection state, thereby reducing the impact on the quality of service of the terminal device and the quality of the user.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, and the like.

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Abstract

一种连接失败恢复方法、装置和系统。该方法包括:终端设备在连接重建过程中发生连接重建失败时,该终端设备能够进行一次或一次以上小区选择。在每一次小区选择后,在所选择的小区上进行后续的连接重建过程。通过本发明实施例使得终端设备有更多的机会进行连接重建过程,并以此保持现有的连接,避免脱离连接状态,减少对终端服务质量以及用户感受质量的影响。

Description

连接失败恢复方法、 装置和系统 技术领域
本发明涉及通信领域, 特别涉及一种连接失败恢复方法、 装置和系统。 背景技术
基于现有的 3GPP标准, 处于无线资源控制 (Radio Resource Control , RRC) 连 接 (RRC— CONNECTED) 状态的终端设备会在失败 (如无线链路失败 (RLF, Radio Link Failure), 移动切换失败 (H0F, Handover Failure), RRC 链接重配置失败等) 发 生后, 发起 RRC链接重建过程以此来保持并继续现有的 RRC链接。
但发明人在实现本发明的过程中发现, 在现有的重建连接机制中, 只允许执行一 次 "小区选择"过程直到选择到一个适合的小区。如果在此过程中有任何失败发生或 已选小区变得不再适合, 终端都会离开 RRC— CONNECTED状态, 并因此不再执行接入层 (AS, Access Stratum) 快速失败恢复过程, 严重影响终端服务质量以及用户感受质 量 (QoE) c
应该注意, 上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、 完整的说明, 并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发 明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。 发明内容
本发明实施例的目的在于提供一种连接失败恢复方法、装置和系统, 在终端设备 连接重建失败时, 可避免该终端设备脱离连接状态, 减少对终端设备的服务质量和用 户感受质量的影响。
根据本发明实施例的第一个方面提供了一种连接失败恢复方法, 该方法包括: 终 端设备在连接重建过程中发生连接重建失败时,该终端设备能够进行一次或一次以上 小区选择。
根据本发明实施例的第二个方面提供了一种连接失败恢复方法, 该方法包括: 为 终端设备配置指示信息,该指示信息用于指示该终端设备在连接重建过程中发生连接 重建失败时, 能够进行一次或一次以上小区选择; 将该指示信息通知该终端设备。 根据本发明实施例的第三个方面提供了一种连接失败恢复方法, 该方法包括: 接 收终端设备在连接重建过程中发生连接重建失败时,进行一次或一次以上小区选择的 信息、 和 /或进行小区选择的次数、 和 /或每次所选择到的小区的标识信息。
根据本发明实施例的第四个方面提供了一种连接失败恢复方法, 该方法包括: 在 终端设备发生切换时,接收终端设备所属小区基站发送的为该终端设备配置的指示信 息、 和 /或终端设备在连接重建过程中发生连接重建失败时是否愿意进行一次或一次 以上小区选择的信息,该指示信息用于指示该终端设备在连接重建过程中发生连接重 建失败时, 能够进行一次或一次以上小区选择。
根据本发明实施例的第五个方面提供了一种连接失败恢复方法, 该方法包括: 终 端设备连接重建的目标基站接收终端设备发送的重建请求消息; 向该终端设备返回连 接重建拒绝消息, 并向该终端设备发送小区列表, 以使该终端设备根据该小区列表进 行一次或一次以上小区选择; 其中, 该小区列表包含该连接重建的目标基站控制的包 含该终端设备上下文的小区。
根据本发明实施例的第六个方面提供了一种连接失败恢复装置, 该装置包括: 小区选择单元,该小区选择单元用于在终端设备在连接重建过程中发生连接重建 失败时, 进行一次或一次以上小区选择。
根据本发明实施例的第七个方面提供了一种连接失败恢复装置, 该装置包括: 信息配置单元, 该信息配置单元用于为终端设备配置指示信息, 该指示信息用于 指示该终端设备在连接重建过程中发生连接重建失败时,能够进行一次或一次以上小 区选择;
第一通知单元, 该第一通知单元用于将该指示信息通知该终端设备。
根据本发明实施例的第八个方面提供了一种连接失败恢复装置, 该装置包括: 第五接收单元,该第五接收单元用于接收终端设备在连接重建过程中发生连接重 建失败时, 进行一次或一次以上小区选择的信息、 和 /或进行小区选择的次数、 和 /或 每次所选择到的小区的标识信息。
根据本发明实施例的第九个方面提供了一种连接失败恢复装置, 该装置包括: 第六接收单元, 该第六接收单元用于在终端设备发生切换时, 接收终端设备所属 小区基站发送为该终端设备配置的指示信息、 和 /或终端设备在连接重建过程中发生 连接重建失败时是否愿意进行一次或一次以上小区选择的信息,该指示信息用于指示 该终端设备在连接重建过程中发生连接重建失败时,能够进行一次或一次以上小区选 择。
根据本发明实施例的第十个方面提供了一种连接失败恢复装置, 该装置包括: 第八接收单元, 该第八接收单元用于接收终端设备发送的重建请求消息; 第五发送单元, 该第五发送单元用于向该终端设备返回连接重建拒绝消息, 并向 该终端设备发送小区列表, 以使该终端上设备根据该小区列表进行一次或一次以上小 区选择; 其中, 该小区列表包含该连接重建的目标基站控制的包含该终端设备上下文 的小区。
根据本发明实施例的第十一个方面提供了一种终端设备,该终端设备包括上述第 六方面的装置。
根据本发明实施例的第十二个方面提供了一种基站,该基站包括上述第七方面的 根据本发明实施例的第十三个方面提供了一种基站,该基站包括上述第八方面的 根据本发明实施例的第十四个方面提供了一种基站,该基站包括上述第九方面的 装置、 或者包括上述第十方面的装置。
根据本发明实施例的第十五个方面提供了一种网络系统, 该系统包括: 上述第十 一方面的终端设备。
根据本发明实施例的第十六个方面提供了一种计算机可读程序,其中当在连接失 败恢复装置或终端设备中执行所述程序时,所述程序使得计算机在所述连接失败恢复 装置或终端设备中执行如上述第一方面所述的连接失败恢复方法。
根据本发明实施例的第十七个方面提供了一种存储有计算机可读程序的存储 ί介 质,其中所述计算机可读程序使得计算机在连接失败恢复装置或终端设备中执行如上 述第一个方面所述的连接失败恢复方法。
根据本发明实施例第十八个方面提供了一种计算机可读程序,其中当在连接失败 恢复装置或基站中执行所述程序时,所述程序使得计算机在所述连接失败恢复装置或 基站中执行如上述第二个方面至第五方面的任意方面所述的连接失败恢复方法。
根据本发明实施例第十九个方面提供了一种存储有计算机可读程序的存储介质, 其中所述计算机可读程序使得计算机在连接失败恢复装置或基站中执行如第二至第 五方面中的任意方面所述的连接失败恢复方法。
本发明实施例的有益效果在于: 在终端设备连接重建失败时, 该终端设备可进行 一次或一次以上小区选择过程,并进行相应的连接重建,避免终端设备脱离连接状态, 减少对终端设备的服务质量和用户感受质量的影响。
参照后文的说明和附图, 详细公开了本发明的特定实施方式, 指明了本发明的原 理可以被采用的方式。应该理解, 本发明的实施方式在范围上并不因而受到限制。在 所附权利要求的精神和条款的范围内,本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和 /或示出的特征可以以相同或类似的方式在一个或更多 个其它实施方式中使用, 与其它实施方式中的特征相组合, 或替代其它实施方式中的 特征。
应该强调, 术语 "包括 /包含"在本文使用时指特征、 整件、 步骤或组件的存在, 但并不排除一个或更多个其它特征、 整件、 步骤或组件的存在或附加。
附图说明
从以下结合附图的详细描述中, 本发明实施例的上述以及其他目的、 特征和优点 将变得更加显而易见, 在附图中:
图 1是本发明实施例 1的连接失败恢复方法;
图 2是本发明实施例 2的连接失败恢复方法流程图;
图 3是本发明实施例 3的连接失败恢复方法流程图;
图 4是本发明实施例 4的连接失败恢复方法流程图;
图 5是本发明实施例 5的连接失败恢复方法流程图;
图 6是本发明实施例 7的连接失败恢复方法流程图;
图 7是本发明实施例 8的连接失败恢复方法流程图;
图 8是本发明实施例 9的连接失败恢复方法流程图;
图 9是本发明实施例 10的连接失败恢复装置构成示意图;
图 10是本发明实施例 11的连接失败恢复装置的构成示意图;
图 11是本发明实施例 14的连接失败恢复装置;
图 12是本发明实施例 16的连接失败恢复装置构成示意图;
图 13是本发明实施例 18的连接失败恢复装置构成示意图; 图 14是本发明实施例 20的连接失败恢复装置构成示意图。 具体实施方式
下面结合附图对本发明的各种实施方式进行说明。 这些实施方式只是示例性的, 不是对本发明的限制。
在现有机制中, 终端设备在失败发生 (如无线链路失败, 移动切换失败, RRC链 接重配置失败等) 后, 通过无线资源控制 (RRC) 连接重建过程来保持并继续现有的 RRC连接。 目前该 RRC连接重建过程如 TS36. 331 vl l. 1. 0中所述, 在此将其内容合 并于此。 以下对该 RRC连接重建过程进行简要说明。 首先, 进行小区选择; 选择到一 个合适小区后在该小区进行 RRC连接重建请求的信令流程(如进行随机接入, 然后发 送 RRC连接重建请求消息, 等待 RRC连接重建消息或 RRC连接重建拒绝消息, 如果收 到的是 RRC连接重建消息, 终端回复 RRC连接重建完成消息)。
但是在实际系统中 (尤其是 "小小区"场景), 由于各种原因, RRC 连接重建过 程有可能失败, 从而造成终端脱离 RRC— CONNECTED状态, 进一步严重影响终端服务质 量以及用户感受质量 (QoE)。
因此, 为了解决上述问题, 本发明实施例提供一种连接失败恢复方法、 装置和系 统。 以下结合附图对本发明实施例的连接失败恢复方法进行详细说明。其中, 以连接 重建过程为 RRC连接重建为例进行说明。
图 1是本发明实施例 1的连接失败恢复方法。 在终端设备侧, 如图 1所示, 该方 法包括:
步骤 101, 终端设备在连接重建过程中发生连接重建失败时, 能够进行一次或一 次以上小区选择;
在本实施例中, 对于 RRC连接重建过程, 该连接重建失败可包括以下情况: 1 ) 在连接重建过程中, 在所选小区变得不再合适、 或者随机接入发生失败、 或 者在指定时间内未选择到合适的小区 (即 T311 超时时未选择到合适的小区)、 或者在 指定时间内未收到 RRC连接重建消息 (即 T301超时时未收到 RRC连接重建消息) 导致连接重建失败。 2) 重建请求被拒绝时导致的连接重建失败;
当发生上述情况时, 终端设备可进行一次或一次以上小区选择, 这样, 该终端设 备可有多次机会进行连接重建过程, 解决了现有机制中存在的问题; 步骤 102, 在进行一次或一次以上小区选择过程中的每一次小区选择后, 在所选 择的小区上进行后续的连接重建过程(即连接重建过程中选择了合适的小区后所进行 的过程);
其中, 在每一次小区选择后, 在所选择的小区上进行后续的连接重建过程, 小区 选择后的连接重建信令与现有技术类似, 此处不再赘述。
由此可知, 在连接重建失败时, 该终端设备还可进行一次或一次以上小区选择过 程, 并进行相应的连接重建, 避免终端设备脱离连接状态, 减少对终端设备的服务质 量和用户感受质量的影响。
下面结合附图分别以 RRC连接重建失败为: 1 ) 所选小区变得不再合适或者随机 接入发生失败或者在指定时间内未选择到合适的小区或者在指定时间内未收到 RRC 连接重建消息。 2) 重建请求被拒绝为例进行说明。
图 2是本发明实施例 2的连接失败恢复方法流程图。该方法可用于所有连接重建 失败的情况, 对于 RRC连接重建失败, 可用于上述两种连接重建失败的情况。
如图 2所示, 该方法包括:
步骤 201, 接收网络侧为终端设备配置的指示信息;
在本实施例中, 该网络侧可以是终端设备在发生失败(如无线链路失败, 移动切 换失败, RRC链接重配置失败等) 前, 终端设备所在基站; 例如, 在发生移动切换失 败时, 网络侧的基站可为源基站;
该指示信息用于指示该终端设备在连接重建过程中发生连接重建失败时,能够进 行一次或一次以上小区选择; 例如, 指示该终端设备在预定时间内进行一次或一次以 上小区选择、 或者执行预定次数的小区选择;
在本实施例中, 该基站可配置该预定时间和 /或预定次数, 这样该预定时间和 /或 预定次数也可以包含在该指示消息内通知该终端设备; 此外, 该预定时间和 /或预定 次数也可通过其他消息来发送;
此外, 该预定时间和 /或预定次数还可由终端设备配置;
在同时配置了预定时间和预定次数的情况,该终端设备可根据预定的方式选择其 中之一来进行小区选择。
步骤 202, 在连接重建失败时, 该终端设备根据网络侧配置的指示信息进行小区 选择; 在现有机制中, 在连接重建失败时, 该终端设备将脱离连接状态, 但在本实施例 中, 还可根据该指示信息进行一次或一次以上的小区选择;
例如, 该终端设备可根据该指示信息, 在预定时间内进行一次或一次以上小区选 择、 或者执行预定次数的小区选择;
在步骤 202中, 首先进行一次小区选择。
步骤 203, 在所选择的小区上进行后续的连接重建过程。
步骤 204, 确定连接重建成功还是失败; 在重建连接成功时, 连接失败恢复, 过 程结束; 否则执行步骤 205。
步骤 205, 在步骤 204中, 在连接重建失败后, 进一步确定进行小区选择的次数 是否超过预定次数、 或者时间是否超过预定时间; 在判断结果为是时, 结束该过程; 在判断结果为否时, 执行步骤 206;
其中, 在该终端设备可设置计时器或计数器, 在发生连接重建失败时就开始计时 或计数。
步骤 206, 在步骤 205中, 如果未超过预定时间或预定次数, 则该终端设备再次 进行小区选择, 然后执行后续的步骤 203。 然后, 以此类推, 直到连接重建。
由上述实施例可知, 在连接重建失败时, 该终端设备还可在预定时间进行一次或 一次以上小区选择过程,或者进行预定次数的小区选择,避免终端设备脱离连接状态, 减少对终端设备的服务质量和用户感受质量的影响。
在上述步骤中, 步骤 201为可选步骤, 在该终端设备已经接收并储存该指示信息 的情况下, 该步骤 201可省略。
此外, 在本实施例中, 该方法还可包括: 该终端设备在连接重建失败时, 开始进 行计时或计数。 这样, 在该计时器超时前或者计数器达到最大值前, 该终端设备可以 进行一次或一次以上的小区选择过程。
在本实施例中, 在进行一次或者一次以上小区选择之后, 该方法还包括: 向所选 择小区的基站上报进行了一次或一次以上小区选择、 和 /或进行小区选择的次数、 和 / 或每次所选择到的小区的标识信息。上述向所选择小区的基站上报的进行了一次或一 次以上小区选择、 和 /或进行小区选择的次数、 和 /或每次所选择到的小区的标识信息 可通过 RRC重建请求消息向该基站上报, 但可通过其他消息上报。 这样使得所选小 区的基站在一定时间内保持该终端设备的上下文 (UE Context); 此外也可以将该终 端设备上报的上述信息用在与自优化网络 (SON, Self-optimizing Network) 有关的 性能优化机制中, 例如, 网络侧可根据该终端设备上报的上述信息调整切换参数, 如 当终端上报了其进行了多次小区选择后,网络侧就可以调整从源小区到每个选择的小 区的切换参数。
在本实施例中, 在步骤 201终端设备接收到指示信息前, 该方法还包括: 向网络侧发送是否愿意进行一次或一次以上小区选择的信息。这样,使得网络侧, 即该终端设备在发生失败 (如无线链路失败, 移动切换失败, RRC链接重配置失败) 时所在基站可根据该信息决定在一定时间内保持该终端设备的上下文, 和 /或使得网 络侧根据该信息向设备终端发送步骤 201中的指示信息。
此外,向网络侧发送是否愿意进行一次或一次以上小区选择的信息的步骤也不限 于在步骤 201之前发送, 也可在步骤 201之后的任何时候发送。这样, 使得网络侧根 据该信息决定在一定时间内保持该终端设备的上下文。
由上述实施例可知, 在连接重建失败时, 如选择的小区不再合适或随机接入过程 失败或者在指定时间内未选择到合适的小区或者在指定时间内未收到 RRC连接重建 消息, 该终端设备可根据预置的指示信息进行一次或一次以上小区选择过程, 避免终 端设备脱离连接状态, 减少对终端设备的服务质量和用户感受质量的影响。
图 3是本发明实施例 3的连接失败恢复方法流程图。针对在 RRC连接重建过程中, 在 RRC重建请求被拒绝时导致的连接重建失败为例进行说明。
如图 3所示, 该方法包括:
步骤 301, 在连接重建过程中, 该终端设备向网络侧发送连接重建请求; 在本实施例中,该终端设备向在小区选择过程中所选择小区的基站发送该连接重 建请求; 其中, 该连接重建请求可为 RRC 连接重建请求。
步骤 302, 接收网络侧返回的连接重建拒绝消息并获得小区列表;
在本实施例中, 在网络侧接收到该连接重建请求后, 可接受或拒绝该请求, 如果 拒绝该请求, 在向该终端设备发送连接重建拒绝消息, 这样该终端设备接收该所选择 小区的基站返回的连接重建拒绝消息, 该连接重建拒绝消息可为 RRC连接重建拒绝 消息;
其中, 在该连接重建拒绝消息中可包含小区列表, 使得该终端设备可获得该小区 列表;其中该小区列表包含该所选择小区的基站控制的包含该终端设备的上下文的小 区, 对应于在 AS-Context (接入层上下文) 中 additionalReestabinfoList所指示的小区 (具体见 TS36.331vll.l.0,10.3节,在此将其内容合并于此);此外,为了进一步优化, 该小区列表还可包含其他基站控制的包含该终端设备的上下文的小区; 这样, 在该连 接重建拒绝消息中包含了所有已经准备好的小区(即控制该小区的基站拥有该终端设 备的上下文), 以帮助该终端设备找到合适的小区, 重新成功建立连接;
在本实施例中, 在该连接重建拒绝消息中, 还可以包含进行一次或一次以上的小 区选择的预定时间或预定次数, 这种情况下, 该预定时间或预定次数由所选择小区的 基站设置; 此外, 该预定时间或预定次数由终端设备配置 (无需通过信令配置); 在本实施例中, 该小区列表还可在其他消息中传输, 不限于连接重建拒绝消息。 步骤 303, 该终端设备从该小区列表中选择小区。
步骤 304至步骤 306与实施例 2中的步骤 303和步骤 305类似, 此处不再赘述。 在步骤 307中, 在步骤 306的判断结果为否, 则再次进行小区选择, 即从该小区列表 中选择小区。
由上述实施例可知, 在连接重建失败时, 如连接重建请求被拒绝时, 该终端设备 可根据网络侧返回的小区列表进行一次或一次以上小区选择过程,避免终端设备脱离 连接状态, 减少对终端设备的服务质量和用户感受质量的影响。
图 4是本发明实施例 4的连接失败恢复方法流程图。针对所有连接重建失败的情 况, 如在 RRC连接重建过程中, 针对上述 1 ) 和 2 ) 的连接重建失败的情况。 在终端 设备发生失败 (如无线链路失败, 移动切换失败, RRC链接重配置失败等) 前所在基 站侧 (移动切换失败时所指的基站是切换的源基站侧)。
如图 4所述, 该方法包括:
步骤 401, 为终端设备配置指示信息;
其中, 该指示信息用于指示该终端设备在连接重建过程中发生连接重建失败时, 能够进行一次或一次以上小区选择;
在本实施例中, 在为终端设备的延迟宽容业务建立无线承载 (Radio Bearer(s)) 时, 网络侧, 即终端设备在发生失败 (如无线链路失败, 移动切换失败, RRC链接重 配置失败等) 前所在的基站可为正进行延迟宽容业务、 处于连接状态 (如 C_CO ECTED状态) 的终端设备配置该指示信息;
步骤 402, 将该指示信息通知该终端设备; 这样, 使得该终端设备在发生连接重建失败时, 还可进行一次或一次以上的小区 选择过程, 避免脱离连接状态, 减少对终端设备的服务质量和用户感受质量的影响。
在本实施例中, 该方法还可包括: 接收终端设备发送的是否愿意进行一次或一次 以上小区选择的信息。并且在接收该终端设备返回的信息是愿意进行一次或一次以上 小区选择的信息时, 该方法还包括: 在预定时间内保持该终端设备的上下文; 或者在 接收到的信息是愿意进行一次或一次以上小区选择的信息时, 再执行步骤 401, 即为 终端设备配置指示信息。
此外, 当该终端设备发生移动切换时, 该方法还可包括: 在移动切换过程中, 将 配置的该指示信息发送给目标基站。其中可将该指示信息作为该终端设备上下文的一 部分发送给目标基站, 或者单独发送给该目标基站。 此外, 还可以将该终端设备发送 的是否愿意进行一次或一次以上小区选择的信息发送给目标基站。
由上述实施例可知, 网络侧可为该终端设备配置指示信息, 在该终端设备连接重 建失败时, 可根据该指示信息进行一次或一次以上小区选择过程, 避免终端设备脱离 连接状态, 减少对终端设备的服务质量和用户感受质量的影响。
图 5是本发明实施例 5的连接失败恢复方法流程图。针对所有连接重建失败的情 况, 如在 RRC连接重建过程中, 针对上述 1 ) 和 2 ) 的连接重建失败的情况。 在终端 设备发生连接重建失败, 进行一次或一次以上小区选择时, 所选择小区的基站侧。
如图 5所示, 该方法包括:
步骤 501, 接收终端设备在连接重建过程中发生连接重建失败时, 进行一次或一 次以上小区选择的信息、 和 /或进行小区选择的次数、 和 /或每次所选择到的小区的标 识信息;
这样, 在终端设备发生连接重建失败时, 可根据预置的指示信息进行一次或一次 以上小区选择过程, 在这种情况下, 该终端设备会将进行一次或一次以上小区选择的 信息上报给网络侧, 即所选择小区的基站, 该所选小区基站可为该终端设备在发生失 败时的基站、 也可为其他基站。
步骤 502, 保持该终端设备的上下文;
其中, 网络侧收到上述信息后, 可在一定时间内保持该终端设备的上下文 (UE context)
步骤 503, 根据接收的该进行一次或一次以上小区选择的信息进行性能优化; 其中, 网络侧接收到该信息后, 可将该信息用于与 SON有关的性能优化机制中, 如调整小区的切换参数。
在上述实施例中, 步骤 502和步骤 503不限于此, 可同时执行或者前后调换顺序 执行。
本发明实施例 6还提供一种连接失败恢复方法。 针对所有连接重建失败的情况, 如在 RRC连接重建过程中, 针对上述 1 ) 和 2 ) 的连接重建失败的情况。 在终端设备 从发生失败前所在基站切换到目标基站侧。
该方法包括:
在终端设备发生切换时, 目标基站接收终端设备所属小区基站发送的为该终端设 备配置的指示信息,该指示信息用于指示该终端设备在连接重建过程中发生连接重建 失败时,能够进行一次或一次以上小区选择。这样,该目标基站接收到该指示信息后, 就无需为该终端设备配置该指示信息。
此外, 在终端设备发生切换时, 该目标基站还可接收该终端设备所属小区基站发 送的终端设备是否愿意进行一次或一次以上小区选择的信息。这样, 该目标基站可根 据该信息判断是否需要为用户设备配置该指示信息。
其中, 该终端设备所属小区基站可为源基站。
图 6是本发明实施例 7的连接失败恢复方法流程图。 如图 6所示, 该方法包括: 步骤 601,终端设备连接重建的目标基站接收终端设备发送的连接重建请求消息; 其中, 该目标基站可为该终端设备发生失败前所在的基站, 也可为其他基站。 步骤 602, 向该终端设备返回连接重建拒绝消息,并向该终端设备发送小区列表; 其中, 该小区列表包含该连接重建的目标基站控制的包含该终端设备上下文的小区; 在本实施例中, 该小区列表可包含在该连接重建拒绝消息中发送给该终端设备, 也可通过其他消息单独发送给该终端设备。这样, 该终端设备获得该小区列表后, 可 从该小区列表中选择合适的小区。
在本实施例中, 在该连接重建拒绝消息中还可以包含连接重建失败后, 进行一次 或一次以上小区选择的预定时间和 /或预定次数, 此外, 该预定时间和 /或预定次数也 可通过其他消息通知该终端设备。 此外, 在本实施例中, 为了进一步优化, 该小区列表还可包含其他基站控制的包 含该终端设备的上下文的小区; 这样, 在该连接重建拒绝消息中包含了所有已经准备 好的小区 (即控制该小区的基站拥有该终端设备的上下文), 以帮助该终端设备找到 合适的小区, 重新成功建立连接。
在这种情况下, 该方法还可包括: 接收其他基站发送的该其他基站控制的包含所 述终端设备上下文的小区;并且上述小区列表还包括其他基站控制的包含该终端设备 上下文的小区。
由上述实施例可知, 在终端设备连接重建失败后, 网络侧可为终端设备发送小区 列表, 该小区列表中可包含上述目标基站、 和 /或其他基站控制的包含该终端设备的 上下文的小区, 这样, 使得获得该小区列表的终端设备从该小区列表中选择合适的小 区,避免终端设备脱离连接状态,减少对终端设备的服务质量和用户感受质量的影响。
图 7是本发明实施例 8的连接失败恢复方法流程图。针对所有连接重建失败的情 况, 如在 RRC连接重建过程中, 针对上述 1 )和 2 ) 的连接重建失败的情况。。 在发生 失败 (如无线链路失败, 移动切换失败, RRC链接重配置失败等) 前, 终端设备所在 基站为源基站,所选择小区基站是在连接重建过程中小区选择过程中所选择小区的基 站。
如图 7所示, 该方法包括: 步骤 701, 网络侧接收该终端设备发送的是否愿意进行一次或一次以上小区选择 的信息。
步骤 702, 为终端设备配置指示信息;
其中, 该指示信息用于指示该终端设备在连接重建过程中发生连接重建失败时, 能够进行一次或一次以上小区选择;
在本实施例中, 当终端设备进行的是延迟宽容业务时, 该终端设备所在基站(此 处称为源基站)可为正进行延迟宽容业务、 处于连接状态(如 RRC_CO ECTED状 态) 的终端设备配置该指示信息。 步骤 703, 在接收该终端设备发送的信息是愿意进 行一次或一次以上小区选择的信息时, 保持该终端设备的上下文、 和 /或用在与 SON 有关的性能优化中;
其中, 该源基站可根据实际情况来确定保持该终端设备的上下文的时间。
步骤 704, 将该指示信息通知该终端设备。
步骤 705, 该终端设备接收该指示信息。
步骤 706, 在移动切换过程中, 该源基站将配置的该指示信息和 /或收到的终端是 否愿意进行一次或一次以上小区选择的信息发送给目标基站;
例如, 如果该终端设备发生移动切换, 从源基站切换到目标基站, 则该源基站可 将该指示信息、 和 /或是否愿意进行一次或一次以上小区选择的信息作为该终端设备 上下文的一部分发送给目标基站, 或者单独发送给该目标基站, 这样该目标基站不需 再为该终端设备配置该指示信息。
在上述步骤 701至 706中, 上述步骤 701为可选步骤;
步骤 701和步骤 702的执行顺序可任意, 这样, 网络侧可为所有进行延迟业务的 终端设备配置该指示信息;
另外, 为了节省信令开销, 在本实施例中, 还可先执行步骤 701, 然后再执行步 骤 702, 这样, 网络侧可在接收到终端设备愿意进行一次或一次以上小区选择的信息 时, 才会为该终端设备配置该指示信息;
步骤 703为可选步骤,步骤 703与步骤 702可互换;步骤 704可与步骤 703互换; 步骤 706为可选步骤, 步骤 703至步骤 706的执行顺序任意。
在本实施例中, 处于 RRC_CO ECTED状态的终端设备在失败(如无线链路失 败、 移动切换失败、 RRC 连接重配置失败等) 发生后, 此处例如发生链路失败, 该 终端设备为了避免其脱离 RRC_CO ECTED状态, 则发起连接重建过程。
步骤 707, 该终端设备发起连接重建过程并且连接重建失败;
在本实施例中, 该终端设备发起连接重建过程如 TS36. 331 vl l. 1. 0中所述, 在 此将其内容合并于此, 此次不再赘述;
如果按照现有机制, 该终端设备脱离 RRC_CO ECTED状态, 但通过本发明实 施例可避免这种情况发生。
步骤 708, 该终端设备根据该指示信息进行一次或一次以上的小区选择过程, 然 后进行后续的连接重建信令, 直到成功建立连接;
在本实施例中, 步骤 708的执行过程与实施例 2的步骤 202至 206类似, 此处不 再赘述;
其中, 在步骤 708中, 在进行一次或者一次以上小区选择之后, 该终端设备还可 向所选择小区的基站上报进行了一次或一次以上小区选择、 和 /或进行小区选择的次 数、和 /或每次所选择到的小区的标识信息,可通过 RRC重建请求消息向该基站上报, 但可通过其他消息上报。 步骤 709, 所选小区的基站接收该终端设备上报的信息, 即进行了一次或一次以 上小区选择、 和 /或进行小区选择的次数、 和 /或每次所选择到的小区的标识信息, 并 保持该终端设备的上下文 (UE Context);
该所选小区的基站可在预定时间内保持该终端设备的上下文,该预定时间可由该 所选小区的基站根据实际情况确定。
步骤 710, 所选小区的基站还可将终端设备上报的上述信息用在与 SON有关的 性能优化机制中, 例如, 网络侧可根据该终端设备上报的上述信息调整切换参数。
由上述实施例可知, 该终端设备在连接重建失败后, 可根据网络侧配置的指示信 息进行一次或一次以上小区选择, 可避免脱离连接状态, 减少对终端设备的服务质量 和用户感受质量的影响。
图 8是本发明实施例 9的连接失败恢复方法流程图。 以 RRC连接重建, 在连接 重建失败为连接重建请求被拒绝为例进行说明。接收终端设备发送连接重建请求时所 在的基站为目标基站, 在发生失败前终端设备所在基站被称为源基站。
在本实施例中, 处于 RRC_CO ECTED状态的终端设备在失败(如无线链路失 败、 移动切换失败、 RRC 连接重配置失败等) 发生后, 此处例如发生链路失败, 该 终端设备为了避免其脱离 RRC_CO ECTED状态, 则发起连接重建过程。
步骤 801, 该终端设备发起连接重建过程;
在本实施例中, 该 RRC连接重建过程如 TS36. 331 vl l. 1. 0中所述, 在此将其内 容合并于此, 此处不再赘述;
在该连接重建过程中, 该终端设备先进行小区选择; 选择到一个合适小区后在该 小区进行 RRC连接重建请求的信令流程(如进行随机接入, 然后该终端设备向该目标 基站发送连接重建请求消息,并且该终端设备接收到该目标基站根据该请求消息返回 的连接重建拒绝消息; 在本实施例中, 该连接重建拒绝消息可包含小区列表;
其中, 该目标基站可为源基站, 也可为其他基站, 如图 8所示, 在本实施例中, 该目标基站为其他基站;
其中, 该连接重建拒绝消息为 RRC连接重建拒绝消息;
在本实施例中, 该连接重建拒绝消息中还包含小区列表, 其中, 该小区列表包含 该目标基站控制的包含该终端设备上下文的小区; 在本实施例中, 该小区列表包含在该连接重建拒绝消息中发送给该终端设备, 但 不限于此, 该小区列表也可通过其他消息单独发送给该终端设备。
步骤 802, 该终端设备接收到该连接重建拒绝消息, 并获得的小区列表。
步骤 803, 该终端设备根据该小区列表进行一次或一次以上的小区选择, 然后在 所选择的小区上进行后续的连接重建过程;
在本实施例中, 步骤 803与实施例 3的步骤 303至 307类似, 此处不再赘述。 其中, 该终端设备可从该小区列表中选择合适的小区, 如选择其他目标基站。 此外, 在本实施例中, 为了进一步优化, 该小区列表还可包含其他基站控制的包 含该终端设备的上下文的小区; 这样, 在该连接重建拒绝消息中包含了所有已经准备 好的小区 (即控制该小区的基站拥有该终端设备的上下文), 以帮助该终端设备找到 合适的小区, 重新成功建立连接。
在这种情况下, 该方法还可包括步骤 800: 该目标基站接收其他基站发送的该其 他基站控制的包含所述终端设备上下文的小区;并且上述小区列表还包括其他基站控 制的包含该终端设备上下文的小区。 上述步骤 800为可选步骤。
在本实施例中, 基站间可通过该 X2消息来交换该小区列表, 其中基站间交换在 移动切换准备过程中被准备的小区的完全列表,该列表尤其包含多个被选择目标基站 中的所有已准备好的小区。
例如, 在切换过程中, 源基站可能会向多个目标基站发送切换准备消息, 每个切 换准备消息中都会包含一个接收该消息的基站内准备好的小区列表。此后, 每个目标 基站就可以通过 X2消息向其他基站 (如源基站或其他的目标基站) 发送其所控制的 已准备好的小区列表, 同理, 源基站 (或某个目标基站)也可以根据收集到的其他目 标基站的已准备好的小区列表,将所有目标基站下已准备好的小区的完全列表发送给 图中的目标基站。 其中, 已准备好的小区指的就是包含终端上下文的小区。
由上述实施例可知,网络侧可为终端设备准备多个备选目标基站中所有已准备好 的小区, 当该终端设备的连接重建请求被拒绝时, 可根据从网络侧获得的小区列表进 行一次或一次以上小区选择过程, 避免终端设备脱离连接状态, 减少对终端设备的服 务质量和用户感受质量的影响。
本领域普通技术人员可以理解,上述实施例所述的方法中的全部或部分步骤可以 通过程序来指令相关的硬件完成, 所述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, 可以包括上述实施例方法中的全部或部分步骤, 所述的存储介质可 以包括: R0M、 RAM, 磁盘、 光盘等。
本发明实施例还提供一种连接失败恢复装置、终端设备和基站。如下面的实施例 所述。 由于该连接失败恢复装置、终端设备和基站解决问题的原理与上述基于该连接 失败恢复装置、 终端设备和基站的方法相似, 因此该装置、 终端设备和基站的实施可 以参见方法的实施, 重复之处不再赘述。
图 9是本发明实施例 10的连接失败恢复装置构成示意图。在终端设备侧,如图 9 所示, 装置 900包括: 小区选择单元 901, 小区选择单元 901用于在终端设备在连接 重建过程中发生连接重建失败时, 进行一次或一次以上小区选择。这样, 可避免终端 设备脱离连接状态, 减少对终端设备的服务质量和用户感受质量的影响。
如图 9所示, 装置 900还可包括连接重建单元 902, 连接重建单元 902用于在进 行每一次小区选择之后, 在所选择的小区上进行连接重建过程。
本实施例中的装置 900的工作过程如实施例 1所述, 此处不再赘述。
在本实施例中, 在 RRC连接重建时, 该连接重建失败包括: 在所选小区变得不 再合适、 或者随机接入发生失败、 或者在指定时间内未选择到合适的小区、 或者在指 定时间内未收到 RRC连接重建消息、 或者重建请求被拒绝时导致的连接重建失败。
图 10是本发明实施例 11的连接失败恢复装置的构成示意图。 以终端设备根据指 示信息进行小区选择为例进行说明, 适用于所有连接重建失败的情况。
在终端设备侧, 如图 10所示, 装置 1000包括: 小区选择单元 1001和连接重建 单元 1002。 其作用与实施例 10类似, 此处不在赘述。
如图 10所示, 装置 1000还包括第一接收单元 1006, 第一接收单元 1006用于接 收网络侧为该终端设备配置的指示信息;
其中该网络侧为该终端设备在发生失败 (如无线链路失败, 移动切换失败, RRC 链接重配置失败等) 前所在基站, 例如, 移动切换失败时所指的基站是源基站。
在本实施例中, 小区选择单元 1001用于根据网络侧配置的指示信息进行一次或 一次以上小区选择; 其中, 该指示信息用于指示该终端设备能够进行一次或一次以上 小区选择。
在本实施例中, 该指示终端设备进行一次或一次以上小区选择是指: 指示该终端 设备在预定时间内进行一次或一次以上小区选择、 或者执行预定次数的小区选择。 其中, 该预定时间和 /或预定次数可由网络侧进行配置, 或者也可由该终端设备 进行配置。
在由终端设备进行配置的情况下, 装置 1000可包括第一配置单元(未示出), 该 第一配置单元用于配置该预定时间和 /或预定次数。
在由网络侧配置的情况下, 装置 1000可包括第三接收单元(未示出), 该第三接 收单元用于接收网络侧配置的该预定时间和 /或预定次数。 在这种情况下, 该预定时 间和 /或预定次数可包含在该指示信息, 此外也可使用单独的消息发送。 该网络侧是 指终端设备在发生失败前所在基站。
在上述情况下, 装置 1000还可包括计时器 1003 (未示出), 该计时器用于在连接 重建失败时, 开始进行计时; 和 /或,
装置 1000还可包括计数器 1004, 该计数器用于在连接重建失败时, 开始进行计 数。
在本实施例中,装置 1000还包括第一发送单元 1005,第一发送单元 1005用于在 小区选择单元 1001进行一次或者一次以上小区选择之后, 向所选择小区的基站上报 进行了一次或一次以上小区选择、 和 /或进行小区选择的次数、 和 /或每次所选择到的 小区的标识信息。
如图 10所示, 装置 1000还包括第二发送单元 1007, 第二发送单元 1007用于向 网络侧发送是否愿意进行一次或一次以上小区选择的信息。这样, 在网络侧接收到的 信息是愿意进行一次或一次以上小区选择的信息时,可在预定时间内保持该终端设备 的上下文。
本发明实施例 11的工作过程如实施例 2、 8所述, 此处不再赘述。
本发明实施例 12还提供一种连接失败恢复装置。 在连接重建失败为重建请求被 拒绝时, 其构成与实施例 11类似, 此处对不同指出进行说明。
在本实施例中, 可以不包含第一接收单元 1006;
在本实施例中,小区选择单元用于根据接收的小区列表进行一次或一次以上小区 选择; 其中, 该小区列表包含该重建连接的目标基站控制的包含该终端设备的上下文 的小区;
在本实施例中, 该小区选择单元包括: 第二接收单元和选择单元 (未示出); 其 中该第二接收单元用于从重建连接的目标基站接收小区列表; 其中, 该小区列表包含 该重建连接的目标基站控制的包含所述终端设备的上下文的小区,该目标基站可通过 连接重建拒绝消息发送给该终端设备。该选择单元用于从该小区列表中选择合适的小 区。
此外, 该小区列表还包含其他基站控制的包含该终端设备的上下文的小区。 本发明实施例 12的工作过程如实施例 3、 9所述, 此处不再赘述。
此外, 该连接失败恢复装置还可是实施例 11和实施例 12的组合。
在上述实施例中, 如图 10所示, 第一发送单元 1005、第二发送单元 1007和计时 器 1003或计数器 1004为可选部件。
由上述实施例可知, 该终端设备在连接重建失败后, 可根据网络侧配置的指示信 息或者网络侧发送的小区列表进行一次一次以上小区选择, 可避免脱离连接状态, 减 少对终端设备的服务质量和用户感受质量的影响。
本发明实施例 13还提供一种终端设备, 该终端设备可为实施例 10至 12所述的 装置。
图 11是本发明实施例 14的连接失败恢复装置。在源基站侧, 即在终端设备发生 失败时, 该终端设备所在基站侧。 如图 11所示, 装置 1100包括信息配置单元 1101 和第一通知单元 1102; 其中, 信息配置单元 1101用于为终端设备配置指示信息, 该 指示信息用于指示该终端设备在连接重建过程中发生连接重建失败时,能够进行一次 或一次以上小区选择。 第一通知单元 1102用于将该指示信息通知该终端设备。
在本实施例中, 该指示信息中还可包括进行小区选择的预定时间和 /或预定次数。 此外, 该预定时间和 /或预定次数可通过其他消息向该终端设备发送, 在这种情 况下, 装置 1100还可包括第二通知单元(图中未示出), 该第二通知单元用于向该终 端设备通知该预定时间和 /或预定次数。
如图 11所示, 装置 1100还包括第四接收单元 1103, 第四接收单元 1103用于接 收终端设备返回的是否愿意进行一次或一次以上小区选择的信息。
如图 11所示, 装置 1100还包括: 第一处理单元 1104, 第一处理单元 1104用于 在第四接收单元 1103接收终端设备返回的信息是愿意进行一次或一次以上小区选择 的信息时, 在预定时间内保持该终端设备的上下文。
在本实施例中,为了节省信令开销,信息配置单元 1101还可在第四接收单元 1103 接收到愿意进行一次或一次以上小区选择的信息时, 再配置该指示信息。 如图 11所示, 装置 1100还包括第三发送单元 1105, 第三发送单元 1105用于在 移动切换过程中, 将配置的该指示信息和 /或接收到的终端是否愿意进行一次或一次 以上小区选择的信息发送给目标基站。这样, 该目标基站无需配置该终端设备的指示 信息。 此外, 该指示信息、 以及是否愿意进行一次或一次以上小区选择的信息还可通 过不同的发送单元进行发送。
在本实施例中,上述第四接收单元 1103、第一处理单元 1104和第三发送单元 1105 为可选部件, 此处不再赘述。
由上述实施例可知, 终端设备在发生失败前所在基站可为终端设备配置指示信 息, 使得终端设备在连接重建失败时, 根据该指示信息进行一次或一次以上的小区选 择, 可避免脱离连接状态, 减少对终端设备的服务质量和用户感受质量的影响。
本发明实施例 15还提供一种基站, 该基站包括实施例 14所述的装置, 该基站可 为终端设备在发生失败前所在基站。
图 12是本发明实施例 16的连接失败恢复装置构成示意图。在终端设备发生连接 重建失败后, 进行小区选择时, 所选择小区的基站侧。
如图 12所示, 装置 1200包括: 第五接收单元 1201, 第五接收单元 1201用于接 收终端设备在连接重建过程中发生连接重建失败时,进行一次或一次以上小区选择的 信息、 和 /或进行小区选择的次数、 和 /或每次所选择到的小区的标识信息。
在本实施例中, 该装置可根据该信息在预定时间内保持该终端设备上下文, 或者 将该信息用于性能优化机制中。
如图 12所示, 装置 1200还包括第二处理单元 1202, 第二处理单元 1200用于根 据接收的该进行一次或一次以上小区选择的信息保持该终端设备的上下文、 和 /或进 行性能优化。
本发明实施例 17还提供一种基站, 该基站包括实施例 16所述的装置, 在该终端 设备发生连接重建失败,该终端设备将根据网络侧配置的指示信息进行一次或一次以 上小区选择, 这时, 该终端设备所选小区的基站为本发明实施例 17的基站。
图 13是本发明实施例 18的连接失败恢复装置构成示意图。在终端设备发生切换 时的目标基站侧, 如图 13所示, 装置 1300包括:
第六接收单元 1301, 第六接收单元 1301用于在终端设备发生切换时, 接收终端 设备所属小区基站发送的为该终端设备配置的指示信息,该指示信息用于指示所述终 端设备在连接重建过程中发生连接重建失败时, 能够进行一次或一次以上小区选择。 此外, 该第六接收单元 1301还用于接收终端设备所属小区基站发送的关于该终端是 否愿意在连接重建失败后进行一次或一次以上小区选择的信息。
如图 13所示, 装置 1300还包括第七接收单元 1302, 第七接收单元 1302用于接 收终端设备所属小区基站发送的进行一次或一次以上小区选择的预定时间和 /或预定 次数。
本发明实施例 19提供一种基站, 该基站包括实施例 18所述的装置, 在该终端设 备发生连接重建失败, 例如, 发生上述实施例中的 1 ) 和 2) 所述的连接重建失败,, 该终端设备接收网络侧(如发生失败前所在基站)配置的指示信息, 在该终端设备从 源基站(即发生失败前所在基站)切换到目标基站时, 该源基站将该指示信息发送给 该目标基站, 此外, 还可将该终端设备是否愿意在连接失败后进行一次或一次以上小 区选择的信息发送给该目标基站, 或者将该预定时间和 /或预定次数发送给该目标基 站。 此时, 该目标基站为本发明实施例 19的基站。
图 14是本发明实施例 20的连接失败恢复装置构成示意图。接收终端设备发送的 连接重建请求的目标基站侧, 如图 14所示, 装置 1400包括: 第八接收单元 1401和 第五发送单元 1402; 其中, 第八接收单元 1401用于接收终端设备发送的重建请求消 息; 第五发送单元 1402用于向该终端设备返回连接重建拒绝消息, 并向该终端设备 发送小区列表; 其中, 该小区列表包含该连接重建的目标基站控制的包含该终端设备 上下文的小区。
如图 14所示, 装置 1400还包括: 第九接收单元 1403, 第九接收单元 1403用于 接收其他基站发送的所述其他基站控制的包含该终端设备上下文的小区;
并且上述小区列表还包括其他基站控制的包含该终端设备上下文的小区。
在本实施例中, 装置 1400还可包括第六发送单元(未示出), 用于向该终端设备 发送进行一次或一次以上小区选择的预定时间和 /或预定次数。
此外, 该预定时间或预定次数也可包含在该重建拒绝消息中, 由第五发送单元
1402发送。
本发明实施例 21还提供一种基站, 该基站包括实施例 20所述的装置。在终端设 备发生连接重建失败, 如连接重建请求被拒绝时, 该终端设备接收网络侧(如目标基 站)发送的小区列表, 该终端设备根据该小区列表进行小区选择, 此时, 该目标基站 为本发明实施例 21的基站。
本发明实施例 22还提供一种网络系统, 该系统包括实施例 13所述的终端设备。 此外, 该系统还可包括实施例 15所述的基站、 和 /或实施例 17所述的基站、 和 /或实 施例 19所述的基站、 和 /或实施例 21所述的基站。
在本实施例中,该网络系统工作流程可参考图 8和图 9的实施例,此处不再赘述。 本发明实施例还提供一种计算机可读程序,其中当在连接失败恢复装置或终端设 备中执行该程序时,该程序使得计算机在该连接失败恢复装置或终端设备中执行如实 施例 1至 3所述的连接失败恢复方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质,其中该计算机可读 程序使得计算机在连接失败恢复装置或终端设备中执行如实施例 1至 3、 8、 9所述的 连接失败恢复方法。
本发明实施例还提供一种计算机可读程序,其中当在连接失败恢复装置或基站中 执行该程序时,该程序使得计算机在该连接失败恢复装置或基站中执行如 4至 9所述 的连接失败恢复方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质,其中该计算机可读 程序使得计算机在连接失败恢复装置或基站中执行实施例 4至 9所述的连接失败恢复 方法。
由上述实施例可知, 当终端设备的连接重建过程失败时, 可表进行一次或一次以 上小区选择过程, 避免终端设备脱离连接状态, 减少对终端设备的服务质量和用户感 受质量的影响。
本发明以上的装置和方法可以由硬件实现, 也可以由硬件结合软件实现。本发明 涉及这样的计算机可读程序, 当该程序被逻辑部件所执行时, 能够使该逻辑部件实现 上文所述的装置或构成部件, 或使该逻辑部件实现上文所述的各种方法或步骤。本发 明还涉及用于存储以上程序的存储介质, 如硬盘、 磁盘、 光盘、 DVD、 flash 存储器 等。
以上结合具体的实施方式对本发明进行了描述, 但本领域技术人员应该清楚, 这 些描述都是示例性的, 并不是对本发明保护范围的限制。本领域技术人员可以根据本 发明的精神和原理对本发明做出各种变型和修改,这些变型和修改也在本发明的范围 内。

Claims

¾1 ¾ ^ ^
1、 一种连接失败恢复方法, 所述方法包括:
终端设备在连接重建过程中发生连接重建失败时,所述终端设备能够进行一次或 一次以上小区选择。
2、 根据权利要求 1所述的方法, 其中, 所述方法还包括: 在进行每一次小区选 择之后, 在所选择的小区上进行后续的连接重建过程。
3、 根据权利要求 1或 2所述的方法, 其中, 所述连接重建失败包括: 在所选小区变得不再合适、或者随机接入发生失败、或者在指定时间内未选择到 合适的小区、或者在指定时间内未收到连接重建消息、或者重建请求被拒绝时导致的 连接重建失败。
4、 根据权利要求 1或 2或 3所述的方法, 其中, 所述终端设备根据网络侧配置 的指示信息进行一次或一次以上小区选择;
其中, 所述指示信息用于指示所述终端设备能够进行一次或一次以上小区选择。
5、 根据权利要求 4所述的方法, 其中, 在进行一次或者一次以上小区选择之后, 所述方法还包括:
向所选择小区的基站上报进行了一次或一次以上小区选择、 和 /或进行小区选择 的次数、 和 /或每次所选择到的小区的标识信息。
6、 根据权利要求 4所述的方法, 其中, 所述方法还包括:
接收网络侧配置的所述指示信息。
7、 根据权利要求 5所述的方法, 其中, 所述方法还包括:
向网络侧发送是否愿意进行一次或一次以上小区选择的信息。
8、 根据权利要求 3所述的方法, 其中, 在重建请求被拒绝时, 所述终端设备进 行一次或一次以上的小区选择, 包括:
从重建连接的目标基站接收小区列表; 其中, 所述小区列表包含所述重建连接的 目标基站控制的包含所述终端设备的上下文的小区;
所述终端设备从所述小区列表中选择合适的小区。
9、 根据权利要求 8所述的方法, 其中, 所述小区列表还包含其他基站控制的包 含所述终端设备的上下文的小区。
10、 根据权利要求 1或 2或 3所述的方法, 其中, 所述终端设备进行一次或一次 以上小区选择是指: 所述终端设备在预定时间内进行一次或一次以上小区选择、或者 执行预定次数的小区选择。
11、 根据权利要求 10所述的方法, 其中, 在连接重建过程中发生连接重建失败 时, 开始进行计时或计数。
12、 根据权利要求 10或 11所述的方法, 其中, 所述方法还包括:
所述终端设备预先配置所述预定时间和 /或预定次数; 或者,
所述方法还包括: 接收网络侧配置的所述预定时间和 /或预定次数。
13、 一种连接失败恢复方法, 所述方法包括:
为终端设备配置指示信息,所述指示信息用于指示所述终端设备在连接重建过程 中发生连接重建失败时, 能够进行一次或一次以上小区选择;
将所述指示信息通知所述终端设备。
14、 根据权利要求 13所述的方法, 其中, 所述方法还包括:
接收终端设备发送的是否愿意进行一次或一次以上小区选择的信息;
并且在接收终端设备发送的信息是愿意进行一次或一次以上小区选择的信息时, 为终端设备配置指示信息、 和 /或在预定时间内保持所述终端设备的上下文。
15、 根据权利要求 13或 14所述的方法, 其中, 所述方法还包括:
在移动切换过程中, 将配置的所述指示信息发送给目标基站。
16、 根据权利要求 14所述的方法, 其中, 所述方法还包括:
在移动切换过程中,将接收到的终端设备是否愿意进行一次或一次以上小区选择 的信息发送给目标基站。
17、 根据权利要求 13或 14所述的方法, 其中, 所述方法还包括:
向所述终端设备发送进行小区选择的预定时间、 和 /或预定次数。
18、 一种连接失败恢复方法, 所述方法包括:
接收终端设备在连接重建过程中发生连接重建失败时,进行一次或一次以上小区 选择的信息、 和 /或进行小区选择的次数、 和 /或每次所选择到的小区的标识信息。
19、 根据权利要求 18所述的方法, 其中, 所述方法还包括:
保持所述终端设备的上下文, 和 /或根据接收的所述进行一次或一次以上小区选 择的信息进行性能优化。
20、 一种连接失败恢复方法, 所述方法包括: 在终端设备发生切换时,接收终端设备所属小区基站发送的为所述终端设备配置 的指示信息、 和 /或终端设备在连接重建过程中发生连接重建失败时是否愿意进行一 次或一次以上小区选择的信息,所述指示信息用于指示所述终端设备在连接重建过程 中发生连接重建失败时, 能够进行一次或一次以上小区选择。
21、 一种连接失败恢复方法, 所述方法包括:
终端设备连接重建的目标基站接收终端设备发送的重建请求消息;
向所述终端设备返回连接重建拒绝消息, 并向所述终端设备发送小区列表, 以使 所述终端上设备根据所述小区列表进行一次或一次以上小区选择; 其中, 所述小区列 表包含所述连接重建的目标基站控制的包含所述终端设备上下文的小区。
22、 根据权利要求 21所述的方法, 其中, 所述方法还包括: 向所述终端设备发 送进行一次或一次以上小区选择的预定次数和 /或预定时间。
23、 根据权利要求 21或 22所述的方法, 其中, 所述方法还包括:
接收其他基站发送的所述其他基站控制的包含所述终端设备上下文的小区; 并且所述小区列表还包括其他基站控制的包含所述终端设备上下文的小区。
24、 一种连接失败恢复装置, 所述装置包括:
小区选择单元,所述小区选择单元用于在终端设备在连接重建过程中发生连接重 建失败时, 进行一次或一次以上小区选择。
25、 根据权利要求 24所述的装置, 其中, 所述装置还包括:
连接重建单元,所述连接重建单元用于在所述小区选择单元进行每一次小区选择 之后, 在所选择的小区上进行后续的连接重建过程。
26、 根据权利要求 24或 25所述的装置, 其中, 所述连接重建失败包括: 在所选小区变得不再合适、或者随机接入发生失败、或者在指定时间内未选择到 合适的小区、或者在指定时间内未收到连接重建消息、或者重建请求被拒绝时导致的 连接重建失败。
27、 根据权利要求 24或 25或 26所述的装置, 其中, 所述小区选择单元用于根 据网络侧配置的指示信息进行一次或一次以上小区选择;
其中, 所述指示信息用于指示所述终端设备能够进行一次或一次以上小区选择。
28、 根据权利要求 27所述的装置, 其中, 所述装置还包括:
第一发送单元,所述第一发送单元用于向所选择小区的基站上报进行了一次或一 次以上小区选择、和 /或进行小区选择的次数、和 /或每次所选择到的小区的标识信息。
29、 根据权利要求 27所述的装置, 其中, 所述装置还包括:
第一接收单元, 所述第一接收单元用于接收网络侧配置的所述指示信息。
30、 根据权利要求 29所述的装置, 其中, 所述装置还包括:
第二发送单元,所述第二发送单元用于向网络侧发送是否愿意进行一次或一次以 上小区选择的信息;
并且所述第一接收单元用于在所述第二发送单元发送的信息是愿意进行一次或 一次以上小区选择的信息时,接收网络侧根据所述信息为所述终端设备配置的指示信 息。
31、 根据权利要求 26所述的装置, 其中, 在重建请求被拒绝时, 所述小区选择 单元包括:
第二接收单元, 所述第二接收单元用于从重建连接的目标基站接收小区列表; 其 中,所述小区列表包含所述重建连接的目标基站控制的包含所述终端设备的上下文的 小区;
选择单元, 所述选择单元用于从所述小区列表中选择合适的小区。
32、 根据权利要求 31所述的装置, 其中, 所述小区列表还包含其他基站控制的 包含所述终端设备的上下文的小区。
33、 根据权利要求 24或 25所述的装置, 其中, 所述小区选择单元在预定时间内 进行一次或一次以上小区选择、 或者执行预定次数的小区选择。
34、 根据权利要求 33所述的装置, 其中, 所述装置还包括计时器, 所述计时器 用于在连接重建过程中发生连接重建失败时, 开始进行计时; 和 /或,
所述装置还包括计数器, 所述计数器用于在连接重建过程中发生连接重建失败 时, 开始进行计数。
35、 根据权利要求 33或 34所述的装置, 其中, 所述装置还包括第一配置单元, 所述第一配置单元用于配置所述预定时间和 /或预定次数。
36、 根据权利要求 33或 34所述的装置, 其中, 所述装置还包括:
第三接收单元, 所述第三接收单元用于接收网络侧配置的所述预定时间和 /或预 定次数。
37、 一种连接失败恢复装置, 所述装置包括: 信息配置单元, 所述信息配置单元用于为终端设备配置指示信息, 所述指示信息 用于指示所述终端设备在连接重建过程中发生连接重建失败时,能够进行一次或一次 以上小区选择;
第一通知单元, 所述第一通知单元用于将所述指示信息通知所述终端设备。
38、 根据权利要求 37所述的装置, 其中, 所述装置还包括:
第四接收单元,所述第四接收单元用于接收终端设备发送的是否愿意进行一次或 一次以上小区选择的信息;
第一处理单元,所述第一处理单元用于在所述第四接收单元接收的信息是愿意进 行一次或一次以上小区选择的信息时, 保持所述终端设备的上下文;
或者,所述第二配置单元用于在所述第四接收单元接收的信息是愿意进行一次或 一次以上小区选择的信息时, 为终端设备配置所述指示信息。
39、 根据权利要求 37或 38所述的装置, 其中, 所述装置还包括:
第三发送单元, 所述第三发送单元用于在移动切换过程中, 将配置的所述指示信 息发送给目标基站。
40、 根据权利要求 38所述的装置, 其中, 所述装置还包括:
第四发送单元, 所述第四发送单元用于在移动切换过程中, 将接收到的终端设备 是否愿意进行一次或一次以上小区选择的信息发送给目标基站。
41、 根据权利要求 37或 38所述的装置, 其中, 所述装置还包括:
第二通知单元, 所述第二通知单元用于通知进行小区选择的预定时间、 或者预定 次数。
42、 一种连接失败恢复装置, 所述装置包括:
第五接收单元,所述第五接收单元用于接收终端设备在连接重建过程中发生连接 重建失败时, 进行一次或一次以上小区选择的信息、 和 /或进行小区选择的次数、 和 / 或每次所选择到的小区的标识信息。
43、 根据权利要求 42所述的装置, 其中, 所述装置还包括:
第二处理单元, 所述第二处理单元用于保持所述终端设备的上下文, 和 /或根据 接收的所述进行一次或一次以上小区选择的信息进行性能优化。
44、 一种连接失败恢复装置, 所述装置包括:
第六接收单元, 所述第六接收单元用于在终端设备发生切换时, 接收终端设备所 属小区基站发送的为所述终端设备配置的指示信息、 和 /或终端设备在连接重建过程 中发生连接重建失败时是否愿意进行一次或一次以上小区选择的信息,所述指示信息 用于指示所述终端设备在连接重建过程中发生连接重建失败时,能够进行一次或一次 以上小区选择。
45、 根据权利要求 44所述的装置, 其中, 所述装置还包括:
第七接收单元,所述第七接收单元用于接收终端设备所属小区基站发送的进行一 次或一次以上小区选择的预定时间和 /或预定次数。
46、 一种连接失败恢复装置, 所述装置包括:
第八接收单元, 所述第八接收单元用于接收终端设备发送的重建请求消息; 第五发送单元, 所述第五发送单元用于向所述终端设备返回连接重建拒绝消息, 并向所述终端设备发送小区列表, 以使所述终端设备根据所述小区列表进行一次或一 次以上小区选择; 其中, 所述小区列表包含所述连接重建的目标基站控制的包含所述 终端设备上下文的小区。
47、 根据权利要求 46所述的装置, 其中, 所述装置还包括:
第六发送单元,所述第六发送单元用于向所述终端设备发送进行一次或一次以上 小区选择的预定次数和 /或预定时间。
48、 根据权利要求 46或 47所述的装置, 其中, 所述装置还包括:
第九接收单元,所述第九接收单元用于接收其他基站发送的所述其他基站控制的 包含所述终端设备上下文的小区;
并且所述小区列表还包括其他基站控制的包含所述终端设备上下文的小区。
49、 一种终端设备, 所述终端设备包括权利要求 24至 36的任一项权利要求所述 的装置。
50、 一种基站, 所述基站包括权利要求 37至 41的任一项权利要求所述的装置。
51、 一种基站, 所述基站包括权利要求 42或 43所述的装置。
52、 一种基站, 所述基站包括权利要求 44或 45所述的装置、 或者包括权利要求
46至 48的任一项权利要求所述的装置。
53、 一种网络系统, 所述系统包括: 权利要求 49所述的终端设备。
54、 根据权利要求 53所述的网络系统, 所述系统还包括权利要求 50、 和 /或权利 要求 51、 和 /或权利要求 52所述的基站。
55、 一种计算机可读程序, 其中当在连接失败恢复装置或终端设备中执行所述程 序时,所述程序使得计算机在所述连接失败恢复装置或终端设备中执行如权利要 1至 12的任一项权利要求所述的连接失败恢复方法。
56、 一种存储有计算机可读程序的存储介质, 其中所述计算机可读程序使得计算 机在连接失败恢复装置或终端设备中执行如权利要 1至 12的任一项权利要求所述的 连接失败恢复方法。
57、一种计算机可读程序,其中当在连接失败恢复装置或基站中执行所述程序时, 所述程序使得计算机在所述连接失败恢复装置或基站中执行如权利要 13至 23的任一 项权利要求所述的连接失败恢复方法。
58、 一种存储有计算机可读程序的存储介质, 其中所述计算机可读程序使得计算 机在连接失败恢复装置或基站中执行如权利要 13至 23的任一项权利要求所述的连接 失败恢复方法。
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