WO2011006376A1 - 切换失败指示信息的通知方法与装置 - Google Patents

切换失败指示信息的通知方法与装置 Download PDF

Info

Publication number
WO2011006376A1
WO2011006376A1 PCT/CN2010/071313 CN2010071313W WO2011006376A1 WO 2011006376 A1 WO2011006376 A1 WO 2011006376A1 CN 2010071313 W CN2010071313 W CN 2010071313W WO 2011006376 A1 WO2011006376 A1 WO 2011006376A1
Authority
WO
WIPO (PCT)
Prior art keywords
handover
cell
base station
rlf
unit
Prior art date
Application number
PCT/CN2010/071313
Other languages
English (en)
French (fr)
Inventor
韩立锋
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43448915&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2011006376(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to RU2011125659/07A priority Critical patent/RU2470491C1/ru
Priority to BRPI1012347-4A priority patent/BRPI1012347B1/pt
Priority to KR1020117013625A priority patent/KR101265835B1/ko
Priority to US13/139,706 priority patent/US9521594B2/en
Priority to EP10799374.3A priority patent/EP2348771B1/en
Priority to JP2011543972A priority patent/JP5254468B2/ja
Publication of WO2011006376A1 publication Critical patent/WO2011006376A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

Definitions

  • the present invention relates to a handover technique of a user terminal, and in particular, to a notification method and apparatus for handover failure indication information in a Long Term Evolution (LTE) system.
  • LTE Long Term Evolution
  • the LTE network is composed of an Evolved Universal Terrestrial Radio Access Network (E-UTRAN), an evolved base station (eNB, Evolved NodeB), and an Evolved Packet Core (EPC).
  • E-UTRAN includes a set of eNBs connected to the EPC through the SI interface, and the eNBs can be connected through X2. Sl and X2 are logical interfaces.
  • One EPC can manage one or more eNBs, and one eNB can also be controlled by multiple EPCs, and one eNB can manage one or more cells.
  • SON Self Organizing Network
  • the feature of the technology is self-configuration self-optimization.
  • the application of the technology in the LTE network enables the base station in the LTE network to automatically configure network parameters according to certain measurements, and automatically optimize according to network changes, thereby maintaining optimal network performance and saving a large amount of Human and material resources.
  • the handover here refers to the handover within the LTE system and the handover between systems.
  • the handover between systems refers to UTRAN or Global System For Mobile Communication (GSM) or Code Division Multiple Access (CDMA, Code Division Multiple Access). ) Switching between systems.
  • GSM Global System For Mobile Communication
  • CDMA Code Division Multiple Access
  • the process of the user equipment (UE, User Equipment) in the network is: The network side makes a handover decision based on a certain handover algorithm according to the signal quality of the local cell and the neighboring cell reported by the user terminal, and then notifies the user terminal according to the handover decision. Carry out The execution of the body switching process. Inappropriate handover parameter settings can cause ping-pong handovers, causing handover failures and radio link failures (RLFs), which are undesirable handovers that negatively impact the user experience and waste network resources. Therefore, for the handover parameter self-optimization, the accurate judgment of the handover failure or the undesired handover scenario is the basis for the handover parameter adjustment.
  • RLFs radio link failures
  • the user terminal After the radio link fails, the user terminal performs re-establishment of radio resource control (RRC).
  • RRC radio resource control
  • the user's information is retained at the source base station or the target base station for RRC re-establishment.
  • the UE in the RRC re-establishment request message carries the user terminal identifier, which includes the UE's Cell Radio Network Temporary Identifier (C-RNTI), and the short MAC complete '1' health-risk value. (short MAC-I, short medium access control integrity protection) and cell physical address (PCI, Physical Cell Identity), where the C-RNTI is allocated in the source cell (the handover failure scenario), or is triggered in the RRC re-establishment. All other scenarios are allocated in the cell.
  • PCI refers to the physical address of the source cell (the scenario where the handover fails), or the physical address of the cell that triggers the RRC re-establishment (other scenarios).
  • the UE When performing RRC re-establishment, the UE performs cell selection.
  • the cell selection process is mainly based on the quality of the radio signal. Therefore, the cell according to the RLF occurrence cell and the RRC re-establishment cell can perform the handover scenario decision.
  • the undesired handover scenario herein refers to a scenario in which the handover is too early and the handover of the wrong cell is selected. According to the statistics of the specific undesired handover scenario, the handover parameters may be optimized.
  • FIG. 1 is a schematic diagram of a scenario in which a cell handover is too early.
  • a radio link failure occurs in the cell b.
  • the UE selects the cell Cell a to perform RRC re-establishment, that is, returns to the pre-switched cell for RRC re-establishment, indicating that the UE switches from the cell Cell a to the cell Cell b too early.
  • 2 is a schematic diagram of a scenario in which a cell handover selects a handover cell error. As shown in FIG.
  • RRC re-establishment indicates that the selected Cell B is the wrong target cell under the selected eNB B, and the correct target cell is the cell Cell a, that is, the UE should directly perform the handover from the cell Cell c to the cell Cell a.
  • the decision of the cell handover scenario is the basis of the configuration of the handover parameters. If the scenario of the cell handover failure and the cause of the failure are notified to the network side during the cell handover, the network side can switch according to the scenario of the cell handover failure and the failure reason.
  • the configuration of the parameters improves the success rate of the handover, avoids the waste of network resources and the degradation of the communication service quality due to the wrong selection of the handover cell. Summary of the invention
  • the main object of the present invention is to provide a method and a device for notifying a handover failure indication information, which can determine a handover scenario of a user terminal and notify the base station that the handover initiates, so that the handover parameter is adjusted according to the handover reason. Thereby configuring better switching parameters on the network side.
  • a notification method for switching failure indication information including:
  • the first base station determines, by using the received radio resource control radio link failure RLF information in the RRC re-establishment request message, information about the cell in which the RLF occurs before the user terminal initiates the RRC re-establishment, and sends the RLF information to the occurrence.
  • the method further includes: the second base station switching the current handover of the user terminal The base station initiated by the notification switch.
  • the second base station determines that the scenario in which the user terminal switches to the cell in which the RLF occurs is that the handover is too early: the second base station determines that the user terminal is the first base station before the radio link failure occurs. If the current RRC re-establishment cell handover to the RLF-enabled cell, and the handover completion duration is less than the set threshold, determining that the user terminal switches to the RLF-enabled cell is too early;
  • the second base station determines that the scenario in which the user terminal switches to the cell in which the RLF occurs is a handover selection handover cell error:
  • the user terminal Determining, before the second base station determines that the radio link fails, the user terminal is switched by the cell in the third base station to the cell in which the RLF occurs, and the handover completion time is less than a set threshold, determining the user
  • the scenario in which the terminal switches to the cell in which the RLF occurs is a handover selection handover cell error.
  • a notification method for switching failure indication information including:
  • the first base station determines, by using the received radio resource control radio link failure RLF information in the RRC re-establishment request message, information about the cell in which the RLF occurs before the user terminal initiates the RRC re-establishment, and sends the RLF information to the occurrence.
  • the notification condition that the handover is too early or the indication information of the handover cell error is switched is: only the handover initiated by the radio quality is notified, and the second base station determines that the handover cause includes the handover cause of the radio quality, and the radio quality is The switching of the reason for the handover is too early or the indication information of the handover selection handover cell error is notified to the base station in which the handover is initiated.
  • the second base station determines that the user terminal switches to the field of the cell in which the RLF occurs.
  • the scene is switched too early:
  • the user terminal Before the second base station determines that the radio link fails, the user terminal is handed over to the cell in which the RLF is generated by the current RRC re-establishment cell in the first base station, and the handover completion time is less than the set width. And determining, by the user terminal, that the scenario in which the user terminal switches to the cell in which the RLF occurs is that the handover is too early;
  • the second base station determines that the scenario in which the user terminal switches to the cell in which the RLF occurs is a handover selection handover cell error:
  • the user terminal Determining, before the second base station determines that the radio link fails, the user terminal is switched by the cell in the third base station to the cell in which the RLF occurs, and the handover completion time is less than a set threshold, determining the user
  • the scenario in which the terminal switches to the cell in which the RLF occurs is a handover selection handover cell error.
  • a notification device for switching failure indication information comprising: a receiving unit, a first determining unit, a second determining unit, a sending unit, a third determining unit, and a notifying unit, wherein:
  • a receiving unit configured to receive an RRC re-establishment request message
  • a first determining unit configured to determine that the RRC re-establishment request message includes RLF information
  • the second determining unit is configured to determine, according to the RLF information, information about a cell in which the RLF occurs before the user terminal initiates RRC re-establishment
  • a sending unit configured to send the RLF information to a base station to which the cell in which the RLF occurs belongs
  • a third determining unit configured to determine that the scenario in which the user terminal switches to the cell in which the RLF occurs is a handover too early or a handover selection handover cell error
  • a notification unit configured to notify, by the indication information that the handover is too early or to switch the handover cell error, to the base station that initiates the handover;
  • the receiving unit, the first determining unit, the second determining unit, and the sending unit belong to a first base station; the third determining unit and the notification unit belong to a second base station.
  • the device further includes:
  • a searching unit configured to search for a current handover reason of the user terminal, where the notification unit notifies the base station of the handover initiated by the current handover reason of the user terminal that is found by the searching unit, where the search unit belongs to Second base station.
  • a notification device for switching failure indication information comprising: a setting unit, a receiving unit, a first determining unit, a second determining unit, a sending unit, a third determining unit, a determining unit, and a notification unit, wherein:
  • a setting unit configured to set a notification condition that the switching is too early or the indication information of the switching cell error is switched
  • a receiving unit configured to receive an RRC re-establishment request message
  • a first determining unit configured to determine that the RRC re-establishment request message includes RLF information
  • the second determining unit is configured to determine, according to the RLF information, information about a cell in which the RLF occurs before the user terminal initiates RRC re-establishment
  • a sending unit configured to send the RLF information to a base station to which the cell in which the RLF occurs belongs
  • a third determining unit configured to determine that the scenario in which the user terminal switches to the cell in which the RLF occurs is a handover too early or a handover selection handover cell error
  • a determining unit configured to determine whether the handover determined by the third determining unit is too early or whether the handover selection cell error meets the indication information notification condition, and the notification notification unit is met when satisfied;
  • a notification unit configured to notify, to the base station that the handover is initiated, that the handover information that satisfies the notification condition is too early or the handover selection handover cell error is received;
  • the setting unit, the receiving unit, the first determining unit, the second determining unit, and the sending unit belong to a first base station; the third determining unit, the determining unit, and the notification The unit belongs to the second base station.
  • the notification strip that switches too early or switches to select indication information for switching a cell error The device is configured to: notify only the handover initiated by the radio quality, and when the determining unit determines that the handover cause includes the handover cause of the radio quality, trigger the notification unit to switch the handover reason of the radio quality too early or switch the indication of the handover cell error.
  • the information informs the base station that the handover originated.
  • the indication of the cell handover is too early or the indication of the handover cell error and the cause of the failure are notified to the handover initiation.
  • the base station, the base station initiated by the handover reconfigures the handover parameter, so that the user terminal no longer has a phenomenon that the handover is too early or the handover selection handover cell error occurs.
  • the invention improves the success rate of the cell handover by dynamically configuring the handover parameters, saves the network resources in the handover process, and greatly improves the service quality of the communication system.
  • FIG. 1 is a schematic diagram of a scenario in which a cell handover is too early
  • FIG. 2 is a schematic diagram of a scenario in which a cell handover selects a handover cell error
  • FIG. 3 is a flow chart of a method for notifying a handover reason when a UE switches from Cell a to Cell b in the present invention
  • FIG. 4 is a flowchart of a method for notifying a handover reason when a UE switches from Cell C to Cell b to select a handover cell error according to the present invention
  • FIG. 5 is a schematic structural diagram of a component of a notification device for switching failure indication information according to the present invention
  • FIG. 6 is another schematic structural diagram of a notification device for handover failure indication information according to the present invention. detailed description
  • the basic idea of the present invention is: in the process of cell handover, when a scene in which the cell handover of the user terminal is too early or the cell selection is incorrect, the indication information of the cell handover is too early or the handover is incorrectly selected, and the failure reason is notified in time.
  • the base station initiated by the handover reconfigures the handover parameter, so that the user terminal no longer has a phenomenon that the handover is too early or the handover selection handover cell error occurs.
  • the invention improves the cell switching by dynamically configuring the switching parameters
  • the success rate saves network resources during the handover process and greatly improves the service quality of the communication system.
  • FIG. 3 is a flowchart of a handover reason notification method for a UE to switch from Cell a to Cell b in the early stage of the present invention. As shown in FIG. 3, the handover method for the UE to switch from Cell a to Cell b is detected as follows:
  • Step 301 The UE switches from the cell Cell a in the eNB A to the cell Cell b in the eNB B, and the handover request message sent by the eNB A to the eNB B includes the reason for the handover initiation.
  • the UE located in the cell Cell a determines to initiate a handover request to the neighboring cell (Cell B), or the eNB A initiates a handover request of the UE to the cell Cell b to the target base station (eNB B); the reason for the handover may be:
  • the UE performs measurement of the neighboring cell (cell Cell b) radio signal strength in the cell Cell a, and finds that the radio signal strength of the cell Cell b reaches the handover request, and then initiates a handover request to the cell B to the eNB B.
  • the eNB A determines that there are too many access users in the cell Cell a, and needs to share the load of the cell Cell a.
  • Step 302 The radio link failure (RLF) occurs shortly after the UE switches to Cell b.
  • the UE selects RRC re-establishment in the cell Cell a according to the cell selection process, that is, returns to the cell before handover to perform RRC re-establishment.
  • the UE sends an RRC re-establishment request message to the eNB A.
  • Step 303 The eNB A receives the RRC re-establishment request message of the UE, and sends the RLF information to the eNB B according to the RLF occurrence cell information.
  • the RLF information may include the physical address (PCI) or CGI information of the cell Cell b in which the RLF occurs, the PCI of the Cell a a RRC re-establishment attempt, or the Evolved Cell Global Identifier (ECGI) information, and the UE occurs in the RLF.
  • PCI physical address
  • CGI CGI information of the cell Cell b in which the RLF occurs
  • ECGI Evolved Cell Global Identifier
  • the RLF information is sent to the eNB B through the X2/S1 interface, that is, directly through the logical interface X2 between the eNB A and the eNB B.
  • the eNB A first sends the RLF information to the network side, and the network side sends the information to the eNB B. .
  • Step 304 The eNB B receives the RLF information of the eNB A, and learns that the UE has an RLF in the cell b of the local base station, and learns that the UE currently performs an RRC re-establishment attempt in the Cell a in the eNB A.
  • the eNB B locally searches for the handover reason of the last handover of the UE, according to the last handover information of the UE saved in the eNB B, if the UE is just switched from the cell Cell a to the cell Cell b, and the UE switches from Cell a to If the completion duration of the cell Cell b is less than the set threshold, it is determined that the handover from Cell a to Cell b occurring by the UE is too early.
  • the threshold value can be set according to the empirical value, such as 1 second, 0.5 second, etc., where the threshold is set by the OAM (Operation Administration and Maintenance) in the relevant protocol.
  • Step 305 The eNB B notifies the eNB A that the handover behavior of the cell a to the cell b is too early, and notifies the eNB A of the indication information of the handover too early and the handover reason of the previous Cell a to the cell b.
  • the premature indication information and the reason for switching are transmitted through the X2/S1 port.
  • the reason for the handover may be that the radio signal quality of the Cell b detected by the UE is better and the handover condition is reached, or the handover is initiated by the eNB A accessing more users and the load is larger. In short, the discovered Cell is obtained. The actual handover cause of a to Cell b informs eNB A.
  • the eNB B determines whether to notify the eNB A of the indication information of the handover too early according to the specific handover reason. Specifically, for example, when the system setting only informs the eNB A of the indication information that the handover is too early due to the handover reason of the radio signal quality, when the reason for the handover of the radio signal quality is not included in the handover reason, the handover will not be performed anymore.
  • the premature indication information informs the eNB A that the handover reason is not notified; and when the handover cause includes a handover cause due to the radio signal quality, and may further include other handover causes, the indication information indicating that the handover is too early is notified to the eNB A; Here, no The reason for the handover is notified, and the eNB A receives the indication information of the handover too early to determine that the handover is caused by the handover reason of the radio signal quality; thereby achieving the filtering of the handover cause.
  • This scenario can be applied to tests of various switching causes.
  • the indication information notification condition for switching too early may be set according to a specific application scenario, and is not limited to the case where only the reason for switching the quality of the wireless signal is notified.
  • Step 306 The eNB A performs optimization of handover parameters according to the decision of the handover scenario between the corresponding cells, and improves handover performance.
  • FIG. 4 is a flowchart of a method for notifying a handover reason when a UE switches from Cell c to Cell b to select a handover cell error according to the present invention. As shown in FIG. 4, the UE in this example switches from Cell c to Cell b to select a handover cell error when the cell is switched. The method includes the following steps:
  • Step 401 The UE switches from the eNB C to the cell C in the eNB B, and the handover request message sent by the eNB C to the eNB B includes the reason for the handover initiation. Reasons for switching See the related description in step 301.
  • Step 402 The radio link fails to occur after the UE switches to Cell b.
  • the UE selects RRC re-establishment in the cell Cell a according to the cell selection procedure, and the UE sends an RRC re-establishment request message to the eNB A.
  • Step 403 The eNB A receives the RRC re-establishment request message of the UE, and sends the RLF information to the eNB B according to the RLF occurrence cell information.
  • the RLF information may contain PCI or CGI information of the cell Cell b in which the RLF occurs, the RRC re-establishment of the attempted cell Cell a PCI or the evolved ECGI, the information, and the C-RNTI information of the UE in the RLF cell C.
  • the RLF information can be transmitted through the X2/S1 port.
  • Step 404 The eNB B receives the RLF information of the eNB A, and can learn that the UE has an RLF in the cell b of the local base station, and currently performs an RRC re-establishment attempt in the Cell a in the eNB A.
  • the eNB B locally searches for the handover reason of the last handover of the UE, according to the last handover information of the UE saved in the eNB B, if the UE is just switched from the cell Cell c in the eNB C to the cell Cell b, and the UE If the duration of the cell c handover to the cell Cell b is less than the set threshold, then the handover from Cell c to Cell b occurring by the UE is determined to select a handover cell error.
  • the threshold value can be set according to the empirical value, such as 1 second, 0.5 second, etc., where the threshold is set by 0 AM.
  • Step 405 The eNB B notifies the eNB C that a handover of the Cell c to the Cell b occurs, and the handover behavior of the error cell is selected, and the handover reason of the previous Cell c to Cell b is notified to the eNB C. Specifically, the error cell indication and the reason for switching are selected through the X2/S1 port transfer handover.
  • the reason for the handover may be that the radio signal quality of the Cell b detected by the UE is better and the handover condition is reached, or the handover is initiated by the eNB A accessing more users and the load is larger. In short, the discovered Cell is obtained. The actual handover cause of a to Cell b informs eNB A.
  • the eNB B determines whether or not to notify the eNB A of the indication information of the handover selection handover cell error according to the specific handover cause.
  • the handover selection handover cell error is selected.
  • the indication information is sent to the eNB A.
  • the eNB A does not notify the handover reason, and the eNB A receives the indication information of the handover selection handover cell error, and can determine that the handover is caused by the handover reason of the radio signal quality; thereby achieving the filtering of the handover cause.
  • This scenario can be applied to tests of various switching causes.
  • the indication information notification condition for switching the selection handover cell error may be set according to a specific application scenario, and is not limited to the case where only the reason for the handover of the radio signal quality is notified.
  • Step 406 The eNB C optimizes the handover parameters according to the decision of the handover scenario between the corresponding cells, and improves the performance of the handover.
  • FIG. 5 is a schematic structural diagram of a device for notifying a handover failure indication information according to the present invention.
  • the notification device of the handover failure indication information of the present invention includes a receiving unit 50, a first determining unit 51, and a second determining unit 52.
  • the receiving unit 50 is configured to receive an RRC re-establishment request message;
  • the first determining unit 51 is configured to determine that the RRC re-establishment request message includes RLF information;
  • the determining unit 52 is configured to determine, according to the RLF information, information that the user terminal RRC re-establishes the cell in which the RLF occurred before;
  • the sending unit 53 is configured to send the RLF information to the base station to which the cell in which the RLF occurs belongs;
  • the unit 54 is configured to determine that the scenario in which the user terminal switches to the cell in which the RLF occurs is a handover too early or a handover selection handover cell error;
  • the notification unit 55 is configured to notify the handover of the indication information that the handover is too early or the handover selection handover cell error is Initiated base station.
  • the receiving unit 50, the first determining unit 51, the second determining unit 52, and the transmitting unit 53 belong to the first base station; the third determining unit 54 and the notifying unit 55 belong to the second base station.
  • the notification device of the handover failure indication information of the present invention further includes a searching unit 56, configured to search for the current handover reason of the user terminal, and the notification unit 55 searches the local terminal of the user terminal that is found by the searching unit 56.
  • the secondary handover reason informs the base station that the handover is initiated.
  • the searching unit 56 belongs to the second base station.
  • the notification device of the handover failure indication information shown in FIG. 5 is set to implement the foregoing notification method of the handover failure indication information, and the implementation functions of the processing units in the figure may refer to the foregoing first embodiment. Understand the relevant description in the second.
  • the functions of the units in the device shown in Figure 5 can be implemented by a program running on the processor or by a specific logic circuit.
  • FIG. 6 is another schematic structural diagram of a notification device for switching failure indication information according to the present invention.
  • the notification device of the handover failure indication information of the present invention includes a setting unit 60, and receives The unit 61, the first determining unit 62, the second determining unit 63, the sending unit 64, the third determining unit 65, the determining unit 66 and the notifying unit 67, wherein the setting unit 60 is configured to set the switching too early or switch the switching cell error
  • the receiving unit 61 is configured to receive an RRC re-establishment request message; the first determining unit 62 is configured to determine that the RRC re-establishment request message includes RLF information; and the second determining unit 63 is configured to use the RLF according to the RLF.
  • the scenario of the cell to which the RLF occurs is a handover too early or a handover selection handover cell error; the determining unit 66 is configured to determine whether the handover determined by the third determining unit is too early or whether the handover selection handover cell error satisfies the indication information notification condition, The trigger notification unit 67 is satisfied; the notification unit 67 is configured to switch the communication condition that satisfies the notification condition too early or switch the selection to switch the cell error Indication information to notify the base station of the handover.
  • the setting unit 60, the receiving unit 61, the first determining unit 62, the second determining unit 63, and the transmitting unit 64 belong to the first base station; the third determining unit 65, the determining unit 66, and the notifying unit 67 belong to the second base station.
  • the notification condition that the handover is too early or the handover indication information of the handover cell error is changed includes notifying only the handover initiated by the radio quality, and the determining unit 66 determines whether the handover cause includes the handover reason of the radio quality, and includes a trigger notification unit 67, the notification unit 67 notifying the base station of the handover initiation that the handover of the radio quality handover cause is too early or the handover selection handover cell error indication information.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

切换失败指示信息的通知方法与装置 技术领域
本发明涉及用户终端的切换技术， 尤其涉及一种长期演进（LTE, Long Term Evolution ) ***中切换失败指示信息的通知方法与装置。 背景技术
LTE网络由演进的通用陆地无线接入网（E-UTRAN, Evolved Universal Terrestrial Radio Access Network ). 演进的基站（eNB, Evolved NodeB )和 演进分组交换中心 （EPC , Evolved Packet Core )组成。 其中， E-UTRAN 包含与 EPC通过 SI接口连接的 eNB的集合，而 eNB之间能通过 X2连接。 其中 Sl、 X2是逻辑接口。 一个 EPC可以管理一个或多个 eNB, —个 eNB 也可以受控于多个 EPC, —个 eNB可以管理一个或多个小区。
自组网 （ SON, Self Organizing Network )是一种自动进行网络配置和 优化的技术。 该技术的特点是自配置自优化， 该技术在 LTE网络中应用使 得 LTE网络中基站根据一定的测量自动配置网络参数， 并根据网络变化进 行自动优化， 从而保持网络性能最优， 同时节约大量的人力物力。
对于 LTE***的切换参数自优化来说， 需要根据网络的运行状况， 以 及切换相关的测量， 按照一定的算法来优化 d、区重选和切换相关的参数， 以提高网络的性能。这里的切换是指 LTE***内部的切换和***间的切换， ***间的切换是指到 UTRAN或全球移动通讯***（GSM, Global System For Mobile Communication )或码分多址 ( CDMA, Code Division Multiple Access ) ***之间的切换。 在网络中用户终端（UE, User Equipment )进行 切换的过程为： 网络侧根据用户终端上报的本小区和邻区的信号质量， 基 于一定的切换算法做出切换决策， 然后根据切换决策通知用户终端进行具 体的切换流程的执行。 不合适的切换参数设置会导致乒乓切换， 造成切换 失败和无线链路失败（RLF, Radio Link Failure ), 这些都是不期望的切换， 对用户的体验造成负面影响并且会浪费网络资源。 因此， 对于切换参数自 优化来说， 对切换失败或者不期望的切换场景的准确判断是进行切换参数 调整的基础。
用户终端在发生无线链路失败后， 会进行无线资源控制 （RRC, Radio Resource Control ) 的重建立。 在源基站或目标基站会保留用户的信息， 用 于 RRC重建立。 UE在 RRC的重建立请求消息里， 会带有用户终端标识， 含有 UE 在小区的无线网络临时标识 （ C-RNTI , Cell Radio Network Temporary Identifier ),短的 MAC完整' 1"生-险证值（ shortMAC-I, short Medium Access Control integrity protection ) 和小区物理地址 ( PCI, Physical Cell Identity )。 其中， C-RNTI是在源小区分配的（切换失败的场景）， 或者是在 触发 RRC重建立的小区里分配的 (其它场景）。 PCI是指源小区的物理地址 (切换失败的场景）， 或者是在触发 RRC重建立的小区的物理地址（其它 场景）。
UE在进行 RRC重建立时， 进行的是小区选择， 小区选择过程主要是 依据无线信号的质量，所以根据 RLF发生小区和 RRC重建立的小区可以进 行切换场景的判决。 这里的不期望的切换场景是指切换过早、 切换选择错 误小区的场景， 根据具体的不期望的切换场景的统计信息， 可以进行切换 参数的优化。
图 1为小区切换过早的场景示意图，如图 1所示， UE从 eNB A下的小 区 Cell a中切换到 eNB B下的小区 Cell b后不久， 就在 Cell b中发生了无 线链路失败， 然后 UE选择了小区 Cell a进行 RRC重建立， 也就是又回到 切换前的小区中进行 RRC重建立， 则说明 UE从小区 Cell a到小区 Cell b 的切换过早。 图 2为小区切换选择切换小区错误的场景示意图， 如图 2所示， UE 从 eNB C下 Cell c切换到 eNB B下 Cell b之后不久就发生了 RLF,然后 UE 在 eNB A下小区 Cell a进行 RRC重建立， 则说明选择的 eNB B下 Cell b 是错误的目标小区， 正确的目标小区为小区 Cell a, 也就是 UE应该直接进 行从小区 Cell c到小区 Cell a的切换。
小区切换场景的判决是切换参数的配置的基础， 如果能在小区切换时 将小区切换失败的场景及其失败的原因通知到网络侧， 网络侧将能依据小 区切换失败的场景及失败原因进行切换参数的配置， 从而提升切换的成功 率， 避免因切换小区选择错误而导致网络资源的浪费、 通信服务质量下降。 发明内容
有鉴于此， 本发明的主要目的在于提供一种切换失败指示信息的通知 方法与装置， 能对用户终端的切换场景进行判决并通知切换发起的基站， 使其根据切换原因对切换参数进行调整， 从而使网络侧配置更佳的切换参 数。
为达到上述目的， 本发明的技术方案是这样实现的：
一种切换失败指示信息的通知方法， 包括：
第一基站通过接收到的无线资源控制 RRC重建立请求消息中的无线链 路失败 RLF信息， 确定用户终端发起 RRC重建立之前发生 RLF的小区的 信息， 并将所述 RLF信息发送至所述发生 RLF的小区所属的第二基站； 以 及
所述第二基站确定所述用户终端切换到所述发生 RLF的小区的场景为 切换过早或切换选择切换小区错误时， 将切换过早或切换选择切换小区错 误的指示信息通知切换发起的基站。
优选地， 所述将切换过早或切换选择切换小区错误的指示信息通知切 换发起的基站时， 该方法还包括： 第二基站将所述用户终端的本次切换原 因通知切换发起的基站。
优选地， 所述第二基站确定用户终端切换到所述发生 RLF的小区的场 景为切换过早为： 所述第二基站确定发生无线链路失败之前， 所述用户终 端由所述第一基站中的当前的 RRC重建立小区切换到所述发生 RLF的小 区， 并且切换完成持续的时间小于设定阔值， 则确定所述用户终端切换到 所述发生 RLF的小区的场景为切换过早；
所述第二基站确定用户终端切换到所述发生 RLF的小区的场景为切换 选择切换小区错误为：
所述第二基站确定发生无线链路失败之前， 所述用户终端由第三基站 中的小区切换到所述发生 RLF的小区， 并且切换完成持续的时间小于设定 阔值， 则确定所述用户终端切换到所述发生 RLF的小区的场景为切换选择 切换小区错误。
一种切换失败指示信息的通知方法， 包括：
第一基站通过接收到的无线资源控制 RRC重建立请求消息中的无线链 路失败 RLF信息， 确定用户终端发起 RRC重建立之前发生 RLF的小区的 信息， 并将所述 RLF信息发送至所述发生 RLF的小区所属的第二基站； 以 及
所述第二基站根据所设置的切换过早或切换选择切换 d、区错误的指示 信息的通知条件， 将满足通知条件的切换过早或切换选择切换小区错误的 指示信息通知到切换发起的基站。
优选地， 所述切换过早或切换选择切换小区错误的指示信息的通知条 件为： 仅通知因无线质量发起的切换， 所述第二基站判断切换原因包含无 线质量的切换原因时， 将无线质量的切换原因的切换过早或切换选择切换 小区错误的指示信息通知切换发起的基站。
优选地， 所述第二基站确定用户终端切换到所述发生 RLF的小区的场 景为切换过早为：
所述第二基站确定发生无线链路失败之前， 所述用户终端由所述第一 基站中的当前的 RRC重建立小区切换到所述发生 RLF的小区，并且切换完 成持续的时间小于设定阔值， 则确定所述用户终端切换到所述发生 RLF的 小区的场景为切换过早；
所述第二基站确定用户终端切换到所述发生 RLF的小区的场景为切换 选择切换小区错误为：
所述第二基站确定发生无线链路失败之前， 所述用户终端由第三基站 中的小区切换到所述发生 RLF的小区， 并且切换完成持续的时间小于设定 阔值， 则确定所述用户终端切换到所述发生 RLF的小区的场景为切换选择 切换小区错误。
一种切换失败指示信息的通知装置， 包括接收单元、 第一确定单元、 第二确定单元、 发送单元、 第三确定单元和通知单元， 其中：
接收单元， 用于接收 RRC重建立请求消息；
第一确定单元， 用于确定所述 RRC重建立请求消息中包括 RLF信息； 第二确定单元，用于根据所述 RLF信息确定用户终端发起 RRC重建立 之前发生 RLF的小区的信息；
发送单元，用于将所述 RLF信息发送至所述发生 RLF的小区所属的基 站；
第三确定单元， 用于确定所述用户终端切换到所述发生 RLF的小区的 场景为切换过早或切换选择切换小区错误；
通知单元， 用于将切换过早或切换选择切换小区错误的指示信息通知 切换发起的基站；
其中， 所述接收单元、 所述第一确定单元、 所述第二确定单元和所述 发送单元属于第一基站； 所述第三确定单元和所述通知单元属于第二基站。 优选地， 所述装置还包括：
查找单元， 用于查找所述用户终端的本次切换原因， 所述通知单元将 所述查找单元查找到的所述用户终端的本次切换原因通知切换发起的基 站； 其中， 所述查找单元属于第二基站。
一种切换失败指示信息的通知装置， 包括设置单元、 接收单元、 第一 确定单元、 第二确定单元、 发送单元、 第三确定单元、 判断单元和通知单 元， 其中：
设置单元， 用于设置切换过早或切换选择切换小区错误的指示信息的 通知条件；
接收单元， 用于接收 RRC重建立请求消息；
第一确定单元， 用于确定所述 RRC重建立请求消息中包括 RLF信息； 第二确定单元，用于根据所述 RLF信息确定用户终端发起 RRC重建立 之前发生 RLF的小区的信息；
发送单元，用于将所述 RLF信息发送至所述发生 RLF的小区所属的基 站；
第三确定单元， 用于确定所述用户终端切换到所述发生 RLF的小区的 场景为切换过早或切换选择切换小区错误；
判断单元， 用于判断所述第三确定单元确定的切换过早或切换选择切 换小区错误是否满足指示信息通知条件， 满足时触发通知单元；
通知单元， 用于将满足通知条件的切换过早或切换选择切换小区错误 的指示信息通知到切换发起的基站；
其中， 所述设置单元、 所述接收单元、 所述第一确定单元、 所述第二 确定单元、 所述发送单元属于第一基站； 所述第三确定单元、 所述判断单 元和所述通知单元属于第二基站。
优选地， 所述切换过早或切换选择切换小区错误的指示信息的通知条 件为： 仅通知因无线质量发起的切换， 所述判断单元判断切换原因包含无 线质量的切换原因时， 触发所述通知单元将无线质量的切换原因的切换过 早或切换选择切换小区错误的指示信息通知切换发起的基站。
本发明中， 在小区切换过程中， 当出现用户终端小区切换过早或切换 小区选择错误的场景时， 通过将小区切换过早或切换选择切换小区错误的 指示信息及失败原因及时通知到切换发起的基站， 由切换发起的基站对切 换参数重新配置， 以使用户终端不再发生切换过早或切换选择切换小区错 误的现象。 本发明通过切换参数的动态配置， 提升了小区切换的成功率， 节约了切换过程中的网络资源， 大大提升了通信***的服务质量。 附图说明
图 1为小区切换过早的场景示意图；
图 2为小区切换选择切换小区错误的场景示意图；
图 3是本发明 UE从 Cell a到 Cell b切换过早时切换原因通知方法流程 图；
图 4为本发明 UE从 Cell c到 Cell b切换选择切换小区错误时切换原因 通知方法的流程图；
图 5为本发明切换失败指示信息的通知装置的一种组成结构示意图； 图 6为本发明切换失败指示信息的通知装置的另一种组成结构示意图。 具体实施方式
本发明的基本思想是： 在小区切换过程中， 当出现用户终端小区切换 过早或切换小区选择错误的场景时， 通过将小区切换过早或切换选择切换 小区错误的指示信息及失败原因及时通知到切换发起的基站， 由切换发起 的基站对切换参数重新配置， 以使用户终端不再发生切换过早或切换选择 切换小区错误的现象。 本发明通过切换参数的动态配置， 提升了小区切换 的成功率， 节约了切换过程中的网络资源， 大大提升了通信***的服务质 量。
为使本发明的目的、 技术方案和优点更加清楚明白， 以下举实施例并 参照附图， 对本发明进一步详细说明。
实施例一
本示例针对的是图 1所示的应用场景。
图 3是本发明 UE从 Cell a到 Cell b切换过早时切换原因通知方法流程 图， 如图 3所示， 本示例 UE从 Cell a到 Cell b切换过早时切换原因通知方 法包括如下步骤：
步骤 301： UE从 eNB A下的小区 Cell a切换到 eNB B下的小区 Cell b 中， eNB A发送给 eNB B的切换请求消息中包含该次切换发起的原因。
位于小区 Cell a中的 UE确定发起到邻小区（小区 Cell b )的切换请求， 或者， 由 eNB A向目标基站 （ eNB B )发起 UE切换到小区 Cell b 的切换 请求； 切换的原因可能是： UE在小区 Cell a中进行邻小区 （小区 Cell b ) 无线信号强度的测量， 发现小区 Cell b的无线信号强度达到切换要求， 则 向 eNB B发起切换到小区 Cell b的切换请求。或者， eNB A确定小区 Cell a 中的接入用户太多， 需要分担小区 Cell a的负荷。
步骤 302: UE切换到 Cell b中不久发生了无线链路失败（RLF ), UE 根据小区选择过程选择了在小区 Cell a进行 RRC重建立， 也就是又回到切 换前的小区中进行 RRC重建立， UE向 eNB A发送 RRC重建立请求消息。
步骤 303: eNB A收到 UE的 RRC重建立请求消息， 根据其中的 RLF 发生小区信息将 RLF信息发送至 eNB B。
RLF信息可以包含 RLF发生的小区 Cell b的物理地址（ PCI )或 CGI 信息、 RRC重建立尝试的小区 Cell a的 PCI或者演进的全球小区标识（ ECGI, Evolved Cell Global Identifier )信息以及 UE在 RLF发生小区 Cell b里的 C-RNTI信息。 RLF信息具体通过 X2/S1 口发送给 eNB B, 即通过 eNB A 与 eNB B之间的逻辑接口 X2直接传送， 或者， eNB A首先将 RLF信息发 送给网络侧， 由网络侧再发送给 eNB B。
步骤 304: eNB B收到 eNB A的 RLF信息， 可以获知 UE在本基站的 Cell b中发生了 RLF, 并获知 UE当前在 eNB A中的 Cell a中进行了 RRC 重建立尝试。
eNB B在本地查找 UE上一次切换的切换原因， 根据 eNB B中保存的 该 UE上一次的切换信息， 如果该 UE是刚刚从小区 Cell a切换到小区 Cell b的，并且 UE从 Cell a切换到小区 Cell b的完成持续时间小于设定的阔值， 则判决该 UE发生的从 Cell a到 Cell b的切换过早。 这里， 阔值可根据经验 值而设定， 如设置为 1秒钟、 0.5秒钟等， 这里， 该阔值在相关协议中是由 OAM ( Operation Administration and Maintenance ) 实现设定的。
步骤 305: eNB B通知 eNB A发生了一次 Cell a到 Cell b的切换过早的 切换行为，并将切换过早的指示信息以及之前 Cell a到 Cell b的切换原因一 并通知 eNB A。 具体通过 X2/S1口传送过早指示信息及切换原因。
这里，切换原因可能是 UE检测到的 Cell b的无线信号质量较佳而达到 了切换条件， 或者是 eNB A接入用户较多而负荷较大而发起的切换， 总之， 将所查找到的 Cell a到 Cell b的真实切换原因通知 eNB A。
需要说明的是， 当***设置了切换原因过滤条件等切换过早的指示信 息通知条件时， eNB B将根据具体的切换原因决定是否将切换过早的指示 信息通知 eNB A。 具体的， 例如， ***设置仅将因无线信号质量的切换原 因才将切换过早的指示信息通知 eNB A时， 则在切换原因中不包括因无线 信号质量的切换原因时， 将不再将切换过早的指示信息通知 eNB A, 也不 通知切换原因； 而当切换原因中包括因无线信号质量的切换原因时一还可 能还包括其他的切换原因， 将切换过早的指示信息通知 eNB A; 这里， 不 通知切换原因， eNB A接收到切换过早的指示信息即可确定其中包括因无 线信号质量的切换原因导致了本次切换； 从而达到切换原因的过滤。 此场 景可应用于各种切换原因的测试中。 切换过早的指示信息通知条件可根据 具体的应用场景而设置， 并不限定于前述的仅通知无线信号质量的切换原 因的情况。
步骤 306: eNB A根据对应小区间的切换场景的判决， 进行切换参数的 优化， 提高切换的性能。
实施例二
本示例针对的是图 2所示的应用场景。
图 4为本发明 UE从 Cell c到 Cell b切换选择切换小区错误时切换原因 通知方法的流程图， 如图 4所示， 本示例 UE从 Cell c到 Cell b切换选择切 换小区错误时切换原因通知方法包括如下步骤：
步骤 401： UE从 eNB C下 Cell c切换到 eNB B下的小区 Cell b中， eNB C发送给 eNB B的切换请求消息中含有该次切换发起的原因。 切换的原因 参见步骤 301中的相关描述。
步骤 402: UE切换到 Cell b中不久发生了无线链路失败， UE根据小区 选择过程选择了在小区 Cell a进行 RRC重建立， UE向 eNB A发送 RRC重 建立请求消息。
步骤 403: eNB A接收到 UE的 RRC重建立请求消息，根据其中的 RLF 发生小区信息将 RLF信息发送至 eNB B。
RLF信息可以含有 RLF发生的小区 Cell b的 PCI或 CGI信息， RRC 重建立尝试的小区 Cell a的 PCI或者演进的 ECGI,信息以及 UE在 RLF发 生小区 Cell b里的 C-RNTI信息。 具体可通过 X2/S1 口传递 RLF信息。
步骤 404: eNB B收到 eNB A的 RLF信息， 可以获知 UE在本基站的 Cell b中发生了 RLF, 当前在 eNB A中的 Cell a中进行 RRC重建立尝试。 eNB B在本地查找 UE上一次切换的切换原因， 根据 eNB B中保存的 该 UE上一次的切换信息，如果该 UE是刚刚从 eNB C中的小区 Cell c切换 到小区 Cell b的， 并且 UE从 Cell c切换到小区 Cell b的持续时间小于设定 的阔值， 则判决该 UE发生的从 Cell c到 Cell b的切换选择切换小区错误。 这里， 阔值可根据经验值而设定， 如设置为 1秒钟、 0.5秒钟等， 这里， 该 阔值是由 0 AM设定的。
步骤 405: eNB B通知 eNB C发生了一次 Cell c到 Cell b的切换选择了 错误小区的切换行为，并将之前 Cell c到 Cell b的切换原因一并通知 eNB C。 具体通过 X2/S1口传递切换选择错误小区指示及切换原因。
这里，切换原因可能是 UE检测到的 Cell b的无线信号质量较佳而达到 了切换条件， 或者是 eNB A接入用户较多而负荷较大而发起的切换， 总之， 将所查找到的 Cell a到 Cell b的真实切换原因通知 eNB A。
需要说明的是， 当***设置了切换原因过滤条件等切换选择切换小区 错误的指示信息通知条件时， eNB B将根据具体的切换原因决定是否将切 换选择切换小区错误的指示信息通知 eNB A。 具体的， 例如， ***设置仅 将因无线信号质量的切换原因才将切换选择切换小区错误的指示信息通知 eNB A时， 则在切换原因中不包括因无线信号质量的切换原因时， 将不再 将切换选择切换小区错误的指示信息通知 eNB A, 也不通知切换原因； 而 当切换原因中包括因无线信号质量的切换原因时一还可能还包括其他的切 换原因， 将切换选择切换小区错误的指示信息通知 eNB A, 这里， 不通知 切换原因， eNB A接收到切换选择切换小区错误的指示信息即可确定其中 包括因无线信号质量的切换原因导致了本次切换； 从而达到切换原因的过 滤。 此场景可应用于各种切换原因的测试中。 切换选择切换小区错误的指 示信息通知条件可根据具体的应用场景而设置， 并不限定于前述的仅通知 无线信号质量的切换原因的情况。 步骤 406: eNB C根据对应小区间的切换场景的判决， 进行切换参数的 优化， 提高切换的性能。
图 5 为本发明切换失败指示信息的通知装置的一种组成结构示意图， 如图 5所示， 本发明切换失败指示信息的通知装置包括接收单元 50、 第一 确定单元 51、 第二确定单元 52、 发送单元 53、 第三确定单元 54和通知单 元 55 , 其中， 接收单元 50用于接收 RRC重建立请求消息； 第一确定单元 51用于确定所述 RRC重建立请求消息中包括 RLF信息； 第二确定单元 52 用于根据所述 RLF信息确定用户终端 RRC重建立之前发生 RLF的小区的 信息； 发送单元 53用于将所述 RLF信息发送至所述发生 RLF的小区所属 的基站；第三确定单元 54用于确定所述用户终端切换到所述发生 RLF的小 区的场景为切换过早或切换选择切换小区错误； 通知单元 55用于将切换过 早或切换选择切换小区错误的指示信息通知切换发起的基站。
其中， 上述接收单元 50、 第一确定单元 51、 第二确定单元 52、 发送单 元 53属于第一基站； 上述第三确定单元 54和通知单元 55属于第二基站。
如图 5所示，本发明切换失败指示信息的通知装置还包括查找单元 56, 用于查找所述用户终端的本次切换原因， 通知单元 55将查找单元 56查找 到的所述用户终端的本次切换原因通知切换发起的基站。 其中， 查找单元 56属于第二基站。
本领域技术人员应当理解， 图 5 所示的切换失败指示信息的通知装置 是为实现前述切换失败指示信息的通知方法而设置的， 图中的各处理单元 的实现功能可参照前述实施例一、 二中的相关描述而理解。 图 5 所示的装 置中各单元的功能可通过运行于处理器上的程序而实现， 也可通过具体的 逻辑电路而实现。
图 6为本发明切换失败指示信息的通知装置的另一种组成结构示意图， 如图 6所示， 本发明切换失败指示信息的通知装置包括设置单元 60、 接收 单元 61、 第一确定单元 62、 第二确定单元 63、 发送单元 64、 第三确定单 元 65、 判断单元 66和通知单元 67, 其中， 设置单元 60用于设置切换过早 或切换选择切换小区错误的指示信息的通知条件； 接收单元 61 用于接收 RRC重建立请求消息； 第一确定单元 62用于确定所述 RRC重建立请求消 息中包括 RLF信息； 第二确定单元 63用于根据所述 RLF信息确定用户终 端 RRC重建立之前发生 RLF的小区的信息； 发送单元 64用于将所述 RLF 信息发送至所述发生 RLF的小区所属的基站；第三确定单元 65用于确定所 述用户终端切换到所述发生 RLF的小区的场景为切换过早或切换选择切换 小区错误； 判断单元 66用于判断所述第三确定单元确定的切换过早或切换 选择切换小区错误是否满足指示信息通知条件， 满足时触发通知单元 67; 通知单元 67用于将满足通知条件的切换过早或切换选择切换小区错误的指 示信息通知到切换发起的基站。
上述设置单元 60、 接收单元 61、 第一确定单元 62、 第二确定单元 63 和发送单元 64属于第一基站； 上述第三确定单元 65、 判断单元 66和通知 单元 67属于第二基站。
所述切换过早或切换选择切换小区错误的指示信息的通知条件包括仅 通知因无线质量发起的切换， 判断单元 66判断切换原因是否包括无线质量 的切换原因， 包括时触发通知单元 67, 通知单元 67将无线质量的切换原因 的切换过早或切换选择切换小区错误的指示信息通知切换发起的基站。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种切换失败指示信息的通知方法， 其特征在于， 包括：
第一基站通过接收到的无线资源控制 RRC重建立请求消息中的无线链 路失败 RLF信息， 确定用户终端发起 RRC重建立之前发生 RLF的小区的 信息， 并将所述 RLF信息发送至所述发生 RLF的小区所属的第二基站； 以 及
所述第二基站确定所述用户终端切换到所述发生 RLF的小区的场景为 切换过早或切换选择切换小区错误时， 将切换过早或切换选择切换小区错 误的指示信息通知切换发起的基站。
2、 根据权利要求 1所述的方法， 其特征在于， 所述将切换过早或切换 选择切换小区错误的指示信息通知切换发起的基站时， 该方法还包括： 第 二基站将所述用户终端的本次切换原因通知切换发起的基站。
3、 根据权利要求 1所述的方法， 其特征在于， 所述第二基站确定用户 终端切换到所述发生 RLF的小区的场景为切换过早为： 所述第二基站确定 发生无线链路失败之前， 所述用户终端由所述第一基站中的当前的 RRC重 建立小区切换到所述发生 RLF的小区， 并且切换完成持续的时间小于设定 阔值，则确定所述用户终端切换到所述发生 RLF的小区的场景为切换过早； 所述第二基站确定用户终端切换到所述发生 RLF的小区的场景为切换 选择切换小区错误为：
所述第二基站确定发生无线链路失败之前， 所述用户终端由第三基站 中的小区切换到所述发生 RLF的小区， 并且切换完成持续的时间小于设定 阔值， 则确定所述用户终端切换到所述发生 RLF的小区的场景为切换选择 切换小区错误。
4、 一种切换失败指示信息的通知方法， 其特征在于， 包括：
第一基站通过接收到的无线资源控制 RRC重建立请求消息中的无线链 路失败 RLF信息 , 确定用户终端发起 RRC重建立之前发生 RLF的小区的 信息， 并将所述 RLF信息发送至所述发生 RLF的小区所属的第二基站； 以 及
所述第二基站根据所设置的切换过早或切换选择切换 d、区错误的指示 信息的通知条件， 将满足通知条件的切换过早或切换选择切换小区错误的 指示信息通知到切换发起的基站。
5、 根据权利要求 4所述的方法， 其特征在于， 所述切换过早或切换选 择切换小区错误的指示信息的通知条件为： 仅通知因无线质量发起的切换， 所述第二基站判断切换原因包含无线质量的切换原因时， 将无线质量的切 换原因的切换过早或切换选择切换小区错误的指示信息通知切换发起的基 站。
6、 根据权利要求 4所述的方法， 其特征在于， 所述第二基站确定用户 终端切换到所述发生 RLF的小区的场景为切换过早为：
所述第二基站确定发生无线链路失败之前， 所述用户终端由所述第一 基站中的当前的 RRC重建立小区切换到所述发生 RLF的小区，并且切换完 成持续的时间小于设定阔值， 则确定所述用户终端切换到所述发生 RLF的 小区的场景为切换过早；
所述第二基站确定用户终端切换到所述发生 RLF的小区的场景为切换 选择切换小区错误为：
所述第二基站确定发生无线链路失败之前， 所述用户终端由第三基站 中的小区切换到所述发生 RLF的小区， 并且切换完成持续的时间小于设定 阔值， 则确定所述用户终端切换到所述发生 RLF的小区的场景为切换选择 切换小区错误。
7、 一种切换失败指示信息的通知装置， 其特征在于， 包括接收单元、 第一确定单元、 第二确定单元、 发送单元、 第三确定单元和通知单元， 其 中：
接收单元， 用于接收 RRC重建立请求消息；
第一确定单元， 用于确定所述 RRC重建立请求消息中包括 RLF信息； 第二确定单元，用于根据所述 RLF信息确定用户终端发起 RRC重建立 之前发生 RLF的小区的信息；
发送单元，用于将所述 RLF信息发送至所述发生 RLF的小区所属的基 站；
第三确定单元， 用于确定所述用户终端切换到所述发生 RLF的小区的 场景为切换过早或切换选择切换小区错误；
通知单元， 用于将切换过早或切换选择切换小区错误的指示信息通知 切换发起的基站；
其中， 所述接收单元、 所述第一确定单元、 所述第二确定单元和所述 发送单元属于第一基站； 所述第三确定单元和所述通知单元属于第二基站。
8、 根据权利要求 7所述的装置， 其特征在于， 所述装置还包括： 查找单元， 用于查找所述用户终端的本次切换原因， 所述通知单元将 所述查找单元查找到的所述用户终端的本次切换原因通知切换发起的基 站； 其中， 所述查找单元属于第二基站。
9、 一种切换失败指示信息的通知装置， 其特征在于， 包括设置单元、 接收单元、 第一确定单元、 第二确定单元、 发送单元、 第三确定单元、 判 断单元和通知单元， 其中：
设置单元， 用于设置切换过早或切换选择切换小区错误的指示信息的 通知条件；
接收单元， 用于接收 RRC重建立请求消息；
第一确定单元， 用于确定所述 RRC重建立请求消息中包括 RLF信息； 第二确定单元，用于根据所述 RLF信息确定用户终端发起 RRC重建立 之前发生 RLF的小区的信息；
发送单元，用于将所述 RLF信息发送至所述发生 RLF的小区所属的基 站；
第三确定单元， 用于确定所述用户终端切换到所述发生 RLF的小区的 场景为切换过早或切换选择切换小区错误；
判断单元， 用于判断所述第三确定单元确定的切换过早或切换选择切 换小区错误是否满足指示信息通知条件， 满足时触发通知单元；
通知单元， 用于将满足通知条件的切换过早或切换选择切换小区错误 的指示信息通知到切换发起的基站；
其中， 所述设置单元、 所述接收单元、 所述第一确定单元、 所述第二 确定单元、 所述发送单元属于第一基站； 所述第三确定单元、 所述判断单 元和所述通知单元属于第二基站。
10、 根据权利要求 9所述的装置， 其特征在于， 所述切换过早或切换 选择切换 d、区错误的指示信息的通知条件为： 仅通知因无线质量发起的切 换， 所述判断单元判断切换原因包含无线质量的切换原因时， 触发所述通 知单元将无线质量的切换原因的切换过早或切换选择切换小区错误的指示 信息通知切换发起的基站。
PCT/CN2010/071313 2009-07-15 2010-03-25 切换失败指示信息的通知方法与装置 WO2011006376A1 (zh)

Priority Applications (6)

Application Number Priority Date Filing Date Title
RU2011125659/07A RU2470491C1 (ru) 2009-07-15 2010-03-25 Способ и устройство оповещения об информации для указания отказа переключения
BRPI1012347-4A BRPI1012347B1 (pt) 2009-07-15 2010-03-25 Método e dispositivo para notificar informação indicativa de falha de transferência intercelular
KR1020117013625A KR101265835B1 (ko) 2009-07-15 2010-03-25 전환 실패 지시 정보의 통지 방법 및 장치
US13/139,706 US9521594B2 (en) 2009-07-15 2010-03-25 Method and device for notifying handover failure indication information
EP10799374.3A EP2348771B1 (en) 2009-07-15 2010-03-25 Method and device for informing handover failure indication information
JP2011543972A JP5254468B2 (ja) 2009-07-15 2010-03-25 切り替え障害の指示情報の通知方法及び装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910151990.8 2009-07-15
CN200910151990.8A CN101959262B (zh) 2009-07-15 2009-07-15 切换失败指示信息的通知方法与装置

Publications (1)

Publication Number Publication Date
WO2011006376A1 true WO2011006376A1 (zh) 2011-01-20

Family

ID=43448915

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/071313 WO2011006376A1 (zh) 2009-07-15 2010-03-25 切换失败指示信息的通知方法与装置

Country Status (8)

Country Link
US (1) US9521594B2 (zh)
EP (1) EP2348771B1 (zh)
JP (1) JP5254468B2 (zh)
KR (1) KR101265835B1 (zh)
CN (1) CN101959262B (zh)
BR (1) BRPI1012347B1 (zh)
RU (1) RU2470491C1 (zh)
WO (1) WO2011006376A1 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012130170A1 (en) * 2011-03-31 2012-10-04 Mediatek Inc. Failure event report correlation for distributed ran self-organization
WO2012138079A2 (ko) * 2011-04-03 2012-10-11 엘지전자 주식회사 신호 전송 여부 결정 방법
US9167447B2 (en) 2011-03-31 2015-10-20 Mediatek Inc. Failure event report for initial connection setup failure
US9661510B2 (en) 2012-03-30 2017-05-23 Mediatek Inc. Failure event report extension for inter-RAT radio link failure
CN110351895A (zh) * 2018-04-04 2019-10-18 华为技术有限公司 通信方法和装置

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104936242B (zh) * 2009-09-29 2019-07-05 北京三星通信技术研究有限公司 处理无线链路失败报告的方法
CN102223665A (zh) * 2010-04-19 2011-10-19 中兴通讯股份有限公司 无线链路失败rlf信息的处理方法及***
CN102685785B (zh) * 2011-03-18 2016-08-03 华为技术有限公司 无线资源控制rrc连接重建立的方法和设备
US8908504B2 (en) * 2011-07-01 2014-12-09 Qualcomm Incorporated Pre-agreed radio link failure recovery channel sequence
CN103108351B (zh) * 2011-11-14 2015-07-08 华为技术有限公司 一种无线链路失败统计方法和相关装置及通信***
CN102395148B (zh) * 2011-11-15 2013-12-11 电信科学技术研究院 一种提高移动健壮性的方法、***和设备
KR101722897B1 (ko) * 2012-01-20 2017-04-05 후지쯔 가부시끼가이샤 링크 실패의 원인을 분석하기 위한 방법 및 장치
CN103298004A (zh) * 2012-02-28 2013-09-11 北京三星通信技术研究有限公司 汇报无线链路失败信息的方法
CN102821384A (zh) 2012-04-13 2012-12-12 中兴通讯股份有限公司 无线链路的重建方法及装置
WO2014014275A1 (ko) * 2012-07-17 2014-01-23 주식회사 팬택 이종 네트워크 시스템에서 제어정보 전송방법 및 장치
WO2014013846A1 (ja) 2012-07-18 2014-01-23 日本電気株式会社 無線基地局、移動通信システム、ハンドオーバ制御方法およびプログラム
CN110191491B (zh) 2012-09-21 2022-12-23 北京三星通信技术研究有限公司 一种支持指示失败事件给源接入***的方法
US9288720B2 (en) * 2012-10-08 2016-03-15 Apple Inc. Dynamic network cell reselection after a failed handover
CN103856980B (zh) * 2012-11-28 2018-11-02 联发科技股份有限公司 连接建立失败报告方法和用户设备
CN114449603B (zh) * 2012-12-24 2024-06-07 北京三星通信技术研究有限公司 无线通信***中的基站及由其执行的方法
MY177868A (en) 2013-01-18 2020-09-23 Ericsson Telefon Ab L M Adapting a mobile network
KR102037389B1 (ko) * 2013-04-05 2019-10-28 주식회사 팬택 이중 연결성을 지원하는 무선 통신 시스템에서 무선링크 제어 방법 및 그 장치
WO2014180006A1 (zh) * 2013-05-10 2014-11-13 富士通株式会社 参数优化方法、装置和通信***
KR101910777B1 (ko) 2013-07-05 2018-10-22 후지쯔 가부시끼가이샤 정보 취득 방법, 파라미터 최적화 방법, 및 그 장치 및 시스템
US10257775B2 (en) * 2013-08-28 2019-04-09 Telefonaktiebolaget Lm Ericsson (Publ) Attachment of a mobile terminal to a radio access network
CN104519506B (zh) * 2013-09-27 2020-02-07 北京三星通信技术研究有限公司 自优化的方法及设备
US9265086B2 (en) * 2013-10-10 2016-02-16 Qualcomm Incorporated Addressing radio link failures in wireless communication systems
US10172111B2 (en) * 2014-03-18 2019-01-01 Lg Electronics Inc. Method and apparatus for transmitting cause value related to small cell in wireless communication system
WO2015190954A1 (en) * 2014-06-09 2015-12-17 Telefonaktiebolaget L M Ericsson (Publ) A first network node, a second network node and methods relating to handover in a wireless communications network
US10165457B2 (en) * 2015-08-07 2018-12-25 Telefonaktiebolaget Lm Ericsson (Publ) System and method for root cause analysis of call failures in a communication network
US9813968B1 (en) 2015-11-03 2017-11-07 Sprint Communications Company L.P. Management of channel status information for LTE redirects
KR102456331B1 (ko) * 2016-04-08 2022-10-19 삼성전자 주식회사 무선 통신 시스템에서 회선 교환 서비스 제공 방법 및 장치
CN115515196A (zh) 2017-05-04 2022-12-23 三星电子株式会社 Ue自主切换中用于测量报告事件操作和网络信令的方法
KR20180122935A (ko) * 2017-05-04 2018-11-14 삼성전자주식회사 UE autonomous handover에서의 measurement report/event 운용 및 네트워크 시그널링 방법
JP7116094B2 (ja) * 2017-06-15 2022-08-09 エルジー エレクトロニクス インコーポレイティド 無線通信システムにおいてハンドオーバー手順を行う方法及びそのための装置
FI3952453T3 (fi) * 2019-03-29 2024-03-28 Honda Motor Co Ltd Tiedonsiirtolaite, tiedonsiirtojärjestelmä ja ohjelma
CN112399454B (zh) * 2019-08-14 2022-12-13 大唐移动通信设备有限公司 信息传输方法及装置
US11470675B2 (en) * 2021-03-03 2022-10-11 Motorola Mobility Llc Call type selection based on failure probability
US11540179B2 (en) 2021-03-03 2022-12-27 Motorola Mobility Llc Multiple call types for a call event
US11523318B1 (en) 2021-07-15 2022-12-06 Motorola Mobility Llc Call recovery for multiple call failures

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101212775A (zh) * 2006-12-30 2008-07-02 华为技术有限公司 一种切换过程中无线链路失败的处理方法及其装置
CN101374321A (zh) * 2007-08-22 2009-02-25 华为技术有限公司 一种演进网络切换处理方法与***
CN201204698Y (zh) * 2007-04-23 2009-03-04 美商内数位科技公司 用于无线电链路和切换失败处理的无线发射接收单元

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100837351B1 (ko) 2002-04-06 2008-06-12 엘지전자 주식회사 이동통신 시스템의 무선링크 파라미터 갱신 방법
EP1881720A1 (en) * 2006-07-19 2008-01-23 Alcatel Lucent Method of controlling handover, base station and mobile station for use in a mobile communication network
US20080074994A1 (en) 2006-09-21 2008-03-27 Innovative Sonic Limited Method for detecting radio link failure in wireless communications system and related apparatus
JP4965958B2 (ja) 2006-10-03 2012-07-04 株式会社エヌ・ティ・ティ・ドコモ Ｒｒｃ接続時のセル／キャリア切り換えおよび切り戻し制御
EP1940190B1 (en) * 2006-12-29 2013-11-20 Motorola Mobility LLC A cellular wireless communication device and method for managing the receipt of a handover command
US9060316B2 (en) 2007-01-10 2015-06-16 Qualcomm Incorporated Radio resource connection (RCC) establishment for wireless systems
RU2428804C2 (ru) * 2007-04-23 2011-09-10 Интердиджитал Текнолоджи Корпорейшн Обработка сбоев в линии радиосвязи и при передаче обслуживания
DE602007014415D1 (de) * 2007-06-13 2011-06-16 Ericsson Telefon Ab L M Technik zum umgehen mit einem funkstreckenausfall in einem kommunikationsnetz
CN101690322B (zh) * 2007-06-29 2013-04-10 诺基亚公司 避免乒乓切换
US8565753B2 (en) * 2007-11-09 2013-10-22 Nec Corporation Radio communication system, method and program
US9544828B2 (en) * 2007-12-05 2017-01-10 Qualcomm Incorporated Handover failure procedures in communication systems
US8929894B2 (en) * 2009-01-06 2015-01-06 Qualcomm Incorporated Handover failure messaging schemes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101212775A (zh) * 2006-12-30 2008-07-02 华为技术有限公司 一种切换过程中无线链路失败的处理方法及其装置
CN201204698Y (zh) * 2007-04-23 2009-03-04 美商内数位科技公司 用于无线电链路和切换失败处理的无线发射接收单元
CN101374321A (zh) * 2007-08-22 2009-02-25 华为技术有限公司 一种演进网络切换处理方法与***

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012130170A1 (en) * 2011-03-31 2012-10-04 Mediatek Inc. Failure event report correlation for distributed ran self-organization
CN102860078A (zh) * 2011-03-31 2013-01-02 联发科技股份有限公司 分布式无线接入自组网的失败事件报告相关
TWI450545B (zh) * 2011-03-31 2014-08-21 Mediatek Inc 通過相關資訊報告並處理失敗事件的方法和用戶設備
US9167447B2 (en) 2011-03-31 2015-10-20 Mediatek Inc. Failure event report for initial connection setup failure
WO2012138079A2 (ko) * 2011-04-03 2012-10-11 엘지전자 주식회사 신호 전송 여부 결정 방법
WO2012138079A3 (ko) * 2011-04-03 2013-01-10 엘지전자 주식회사 신호 전송 여부 결정 방법
US9432856B2 (en) 2011-04-03 2016-08-30 Lg Electronics Inc. Method for deciding transmission of signal
US9661510B2 (en) 2012-03-30 2017-05-23 Mediatek Inc. Failure event report extension for inter-RAT radio link failure
CN110351895A (zh) * 2018-04-04 2019-10-18 华为技术有限公司 通信方法和装置
CN110351895B (zh) * 2018-04-04 2021-11-09 华为技术有限公司 通信方法和装置

Also Published As

Publication number Publication date
EP2348771B1 (en) 2018-05-09
EP2348771A4 (en) 2015-08-26
BRPI1012347B1 (pt) 2021-03-30
KR20110084534A (ko) 2011-07-25
US9521594B2 (en) 2016-12-13
CN101959262A (zh) 2011-01-26
EP2348771A1 (en) 2011-07-27
RU2470491C1 (ru) 2012-12-20
JP5254468B2 (ja) 2013-08-07
US20110250925A1 (en) 2011-10-13
CN101959262B (zh) 2015-07-22
BRPI1012347A2 (pt) 2016-03-22
KR101265835B1 (ko) 2013-05-20
JP2012514398A (ja) 2012-06-21

Similar Documents

Publication Publication Date Title
WO2011006376A1 (zh) 切换失败指示信息的通知方法与装置
US11665599B2 (en) Light-weight RRC connection setup in multi-rat network
EP2982165B1 (en) Methods of operating radio access network base stations and related network nodes
US10098163B2 (en) Service recovery method, apparatus, and system for a wireless communication network
KR101432913B1 (ko) 핸드오버 시나리오 판단 파라미터를 리포팅하는 방법과 ｕｅ, 및 핸드오버 시나리오 판단 기지국
JP5698843B2 (ja) 情報を提供するための方法、移動局装置、基地局装置及び通信装置
US8903399B2 (en) Methods and network nodes for detecting short stay handover
EP2466936B1 (en) Method and system for identifying a terminal
KR20170115076A (ko) 시그널링 최적화 방법 및 디바이스
JP5787240B2 (ja) ハンドオーバ失敗の処理方法及びユーザ装置
WO2016061785A1 (zh) 无线资源控制rrc连接方法、重连接方法和装置
WO2014154132A1 (zh) 一种针对无线链路失败的网络优化方法、装置及***
CN111866965A (zh) 条件切换方法及对应的用户设备
WO2012013107A1 (zh) 切换场景判决过程中确定目标网元的方法及***
WO2024149066A1 (zh) 无线链路失败报告方法以及用户设备
CN118338348A (zh) 无线链路失败报告方法以及用户设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10799374

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2010799374

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 20117013625

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 13139706

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 2011125659

Country of ref document: RU

ENP Entry into the national phase

Ref document number: 2011543972

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2795/KOLNP/2011

Country of ref document: IN

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: PI1012347

Country of ref document: BR

ENP Entry into the national phase

Ref document number: PI1012347

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20110816