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WO2015101013A1 - Procédé, dispositif et système pour traiter des transferts intercellulaires inutiles - Google Patents

Procédé, dispositif et système pour traiter des transferts intercellulaires inutiles Download PDF

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Publication number
WO2015101013A1
WO2015101013A1 PCT/CN2014/082281 CN2014082281W WO2015101013A1 WO 2015101013 A1 WO2015101013 A1 WO 2015101013A1 CN 2014082281 W CN2014082281 W CN 2014082281W WO 2015101013 A1 WO2015101013 A1 WO 2015101013A1
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WIPO (PCT)
Prior art keywords
handover
cell
utran
unnecessary
neighboring
Prior art date
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PCT/CN2014/082281
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English (en)
Chinese (zh)
Inventor
孙杨
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ZTE Corp
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ZTE Corp
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Priority to MYPI2016702442A priority Critical patent/MY184779A/en
Priority to JP2016543118A priority patent/JP6289644B2/ja
Publication of WO2015101013A1 publication Critical patent/WO2015101013A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off
    • 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

Definitions

  • the present invention relates to an unnecessary handover of a mobile communication system, and in particular, a processing method, apparatus, and system for a UE (user equipment) that does not need to be switched between an LTE (Long Term Evolution) network and a different system network.
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partners Project
  • SON Self-Organizing Networks, Organizational network
  • Mobile robust optimization is an important feature of SON. Mobile robustness optimization changes switching conditions by optimizing switching parameters, reducing switching failures in the network and unnecessary switching.
  • the UE switches from the E-UT AN (Enhanced UT AN) to the heterogeneous system network, for example: UTRAN (UMTS Terrestrial Radio Access Network, UMTS Terrestrial Radio Access Network; ), GERAN (GSM EDGE Radio Access Network, GSM EDGE Radio Access Network), etc.
  • UTRAN UMTS Terrestrial Radio Access Network, UMTS Terrestrial Radio Access Network
  • GERAN GSM EDGE Radio Access Network, GSM EDGE Radio Access Network
  • the present invention mainly provides a processing method, apparatus and system for unnecessary switching of different systems.
  • the processing method of unnecessary handover includes: identifying a fault type of unnecessary handover; counting the number of occurrences of various unnecessary handover fault types; when an unnecessary handover fault type occurs When the number of times reaches the set threshold, a request message for adjusting the corresponding parameter is sent.
  • the embodiment of the present invention further provides a processing device that does not need to be switched, and includes: an identification module, a statistics module, and a sending module; the identifying module is configured to identify a fault type that is not necessary to be switched, and notify the statistics module; And configured to count the number of times of unnecessary switching of the fault type, and notify the sending module when the number of occurrences of the same type of unnecessary switching fault type reaches a set threshold; the sending module is configured to not reach the set threshold The type of fault that needs to be switched sends the corresponding request message.
  • the processing system of the unnecessary handover includes a source cell base station, a target cell base station, and a UE; wherein, the source cell and the target cell are different network cells;
  • the embodiment of the invention further provides a computer storage medium, wherein a computer program for executing the above-mentioned unnecessary switching processing method is stored.
  • the processing method, device or system for unnecessary handover proposed by the present invention can accurately identify and split scenes that are not necessarily switched by different systems, and implement different optimization schemes according to different scenarios, thereby being able to solve more accurately and directly.
  • Different systems do not need to switch faults, so that users can preferentially stay in the LTE network when the network coverage and signal quality are normal, instead of switching to the 2G or 3G network, ensuring the quality of the user's resident network and improving the user's online experience.
  • FIG. 1 is a flowchart of basic steps of a method for implementing unnecessary handover according to an embodiment of the present invention
  • FIG. 2 is a flowchart of identifying a fault type of unnecessary handover according to an embodiment of the present invention
  • Figure 3a is a schematic view of a first embodiment of the present invention.
  • Figure 3b is a flow chart of the first embodiment of the present invention.
  • Figure 4a is a schematic view of a second embodiment of the present invention
  • Figure 4b is a flow chart of a second embodiment of the present invention
  • Figure 5a is a schematic view of a third embodiment of the present invention.
  • Figure 5b is a flow chart of a third embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a processing device for implementing unnecessary handover according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a processing system for implementing unnecessary handover according to an embodiment of the present invention.
  • Step 101 Identify a fault type that is unnecessary to be switched;
  • Step 102 Count the number of occurrences of various unnecessary switching fault types
  • Step 103 When the number of occurrences of an unnecessary handover failure type reaches a set threshold, a request message for adjusting the corresponding parameter is sent.
  • the types of faults that need to be switched may include: the timing of switching to the neighboring system of the different system is too early, the timing of switching to the neighboring system is too late, or the timing of switching to the neighboring system of the different system is too early and the neighboring system is switched to the same system. Too late; Specifically, the type of failure that is unnecessary to be switched may be determined according to a HO Report message including a HO Report Type, a HO Type, and a candidate E-UTRAN cell list.
  • the set threshold can be determined comprehensively according to the user's needs and the number of times of switching in the current network and the frequency of unnecessary switching of different systems.
  • the LTE communication system is taken as an example to describe a specific implementation method for identifying a fault type that is unnecessary to be switched in the foregoing step 101. As shown in FIG. 2, the method includes:
  • Step 201 After the UE performs handover from the LTE network cell A to the different system neighbor B, the eNodeB where the cell B is located notifies the UE to perform coverage measurement.
  • the coverage measurement includes at least measuring a cell that has coverage at a current location
  • Step 202 The UE performs measurement coverage and reports the measurement result to the eNodeB where the cell B is located.
  • the measurement result includes at least a candidate E-UTRAN cell list, where the candidate E-UTRAN cell list is written with an E-UTRAN cell that has coverage at the current location.
  • logo The eNodeB where the cell B is located determines the handover message according to the measurement result, and sends the message to the eNodeB where the cell A is located.
  • the handover report message includes: a handover report type, a handover type, and a candidate E-UTRAN cell list; the handover report message may be carried in an MME Direct Information Transfer (MME) to be sent to the eNodeB where the cell A is located.
  • MME MME Direct Information Transfer
  • the handover report type may be used to indicate whether the handover is an unnecessary handover of the different system; the handover type may be used to indicate that the handover is a handover of the LTE network to the different system neighboring cell; the specific content is specified in the 3GPP protocol. , No longer.
  • Step 204 The eNodeB where the cell A is located determines whether the system is unnecessary handover according to the handover report message, and if yes, further determines the specific type of the different system handover, for example: the different system cell is UTRAN, or GERAN, etc., and jumps Go to step 205; if not, end the current process;
  • the specific type of the handover is differentiated according to the handover type, and the statistics are separately processed.
  • the specific type of handover is LTE to UTRAN (LTE to UTRAN) or LTE to GE AN (LTE) according to the handover type. Go to GERAN) and then perform statistical processing separately.
  • Step 205 The eNodeB where the cell A is located determines the type of the fault that the different system does not need to switch according to the candidate E-UTRAN cell list;
  • the candidate E-UTRAN cell only includes the handover source cell, it indicates that the E-UTRAN handover source cell can still be detected after the inter-system handover occurs, and the UE should continue to camp on the LTE network without switching too early. System network. Therefore, in this case, it is determined that the type of failure that is not necessary to switch is too early to switch to the adjacent system, and it is noted that the timing of switching to the adjacent system is too early; If the candidate E-UTRAN cell does not include the handover source cell, but includes other E-UTRAN cells, and one of the other E-UTRAN cells has a neighbor relationship with the handover source cell, it indicates that E- cannot be detected after the different system handover.
  • the UTRAN switches the source cell, there is no premature handover to the neighboring cell of the different system; and the neighboring cell of the E-UTRAN handover source cell can be detected, indicating that the E-UTRAN neighboring cell is available in the E-UTRAN handover source cell at the handover point. But there is no switching. Therefore, in this case, it is determined that the type of failure that is not necessary to switch is too late to switch to the neighboring system of the same system, and it is recorded that the timing of switching to the E-UTRAN neighboring area is too late;
  • the candidate E-UTRAN cell includes both the E-UTRAN handover source cell and other E-UTRAN cells, and one of the other E-UTRAN cells has a neighbor relationship with the handover source cell, according to the above analysis, the situation is determined.
  • the type of fault that needs to be switched is that the timing of the handover to the adjacent system is too early and the timing of the handover to the neighboring system is too late. It is recorded as the timing of the handover to the adjacent system and the timing of the handover to the E-UTRAN neighbor. Too late.
  • the E-UTRAN neighbor relationship mismatch processing according to the prior art is not involved in the present invention.
  • step 103 when the number of occurrences of an unnecessary switching failure type reaches a set threshold, a request message is sent to request adjustment of the corresponding parameter.
  • the specific implementation manners and principles are as follows: For a different system that is too early to switch to a different system, the LTE communication system is taken as an example. According to the entry condition formula of the B2 event:
  • Mn is the measurement result of the adjacent zone of the different system
  • 0 is the frequency offset of the neighbor of the different system
  • Hys is the event hysteresis parameter
  • Thresh2 is the event threshold
  • the Mn can be obtained from the measurement, and the Ofn, Hys, and Thresh2 can be configured through the background network management system, which is a prior art in the field and will not be described again.
  • the UE will switch to the adjacent system neighboring cell. In order to make the user switch to the different system neighboring area more difficult, it is necessary to adjust the parameters to make the event threshold Thresh2 more difficult to achieve.
  • the base station when the number of premature occurrences of the handover to the different system neighboring cell reaches the set threshold, the base station sends a request for the frequency offset Ofn of the neighboring system to the background network management, and the background network management After the request is adjusted, D, Ofn, the purpose of adjusting the threshold of the different system neighboring cells at different frequency points is achieved, thereby optimizing the unnecessary switching problem of the different system of the type.
  • the background network controller adjusts the OFn, it sends a message that the parameter adjustment succeeds to the base station. After receiving the message that the parameter adjustment is successful, the base station sets the number of premature handover timings to the different system to zero.
  • the LTE communication system is used as an example.
  • the entry condition formula of the A3 event is used as an example.
  • Mn and Mp can be obtained from the measurement.
  • Ocn, Ocp, Hys, Off, and Thresh2 can be configured through the background network management system, which is a prior art in the art and will not be described again.
  • the UE When the above conditional formula is established, the UE will switch to the same system neighboring cell. In order to make it easier for users to switch to the E-UTRAN neighbor, it is necessary to adjust the parameters to make the formula easier to satisfy. Specifically, in the embodiment of the present invention, when the switching timing to the neighboring system of the same system occurs too late, the number of times is reached.
  • the base station sends a request for the specific offset Ocn of the E-UTRAN neighboring area to the background network management system. After receiving the request, the background network management device adjusts the specific offset Ocn of the neighboring area to adjust the threshold of the single E-UTRAN neighboring area. Purpose, thereby optimizing the unnecessary switching problem of this type of heterogeneous system.
  • the background network controller adjusts the specific offset Ocn of the neighboring cell
  • the message that the parameter adjustment succeeds is sent to the base station, and after receiving the message that the parameter adjustment succeeds, the base station sets the number of times to the different system neighboring cell switching timing to be zero.
  • the frequency offset Ofn in the neighboring area of the different system can be simultaneously adjusted in the above manner, and the specific partial deviation of the E-UTRAN neighboring area can be adjusted.
  • Move Ocn to achieve the purpose of adjusting the handover threshold of the heterogeneous system and the E-UTRAN neighbor, making it easier for users to switch to the E-UTRAN neighbor and more difficult to switch to the different system. Thereby optimizing the unnecessary switching problem of this type of different system.
  • the fault type of the unnecessary handover that occurs at the same time when the handover timing of the adjacent system is too early and the handover timing to the same neighbor of the system is too late is counted as too early.
  • the timing of switching to the E-UTRAN neighboring area is too late; that is, when the timing of the simultaneous presence of the adjacent system neighboring area is too early and the timing of switching to the same system neighboring area is too late, the timing of the switching of the different system neighboring area is too early and
  • the number of statistics that are too late for the switching of the neighboring system is increased by one, and is not treated as a single statistic type.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the scenario presented in this embodiment is a handover of a UE from an LTE network E-UTRAN cell to a heterogeneous system GE AN cell.
  • the type of failure that the different system does not need to switch is that the handover time to the different system cell is too early.
  • the UE moves from the cell A in the direction of the arrow.
  • the handover point (HO Triggering) is reached, the UE is switched to the different system neighbor B.
  • the cell A is an E-UTRAN cell
  • the cell B is a different system.
  • the other RAT is specifically a GERAN cell.
  • the method for unnecessary switching optimization in this embodiment includes:
  • Step 301 After the UE performs handover from the LTE cell A to the different system neighbor B, the eNodeB in which the cell B is located notifies the UE to perform coverage measurement.
  • Step 302 The UE performs measurement coverage and reports the measurement result to the eNodeB where the cell B is located. Specifically, the UE measures the coverage of the cell A at the current location, and writes the identifier of the cell A into the candidate E-UTRAN cell list and reports the cell to the cell. The eNodeB where B is located.
  • Step 303 The eNodeB where the cell B is located determines the handover message according to the measurement result and sends the message to the eNodeB where the cell A is located.
  • the handover report message includes: a handover report type, a handover type, and a candidate E-UTRAN cell list; the handover report message is carried in the MME Direct Information Transfer and sent to the eNodeB where the cell A is located.
  • Step 304 The eNodeB where the cell A is located determines, according to the handover report message, that the handover is an unnecessary handover of the serving cell to the heterogeneous system GERAN cell.
  • the eNodeB where the cell A is located according to the handover report message in the handover report message is an Unnecessary HO to another RAT, and determines that the handover is an unnecessary handover of the different system; according to the handover type, the LTE to GE AN determines that the handover is to the hetero-system GERAN cell. It is not necessary to switch.
  • Step 305 The eNodeB where the cell A is located determines the fault type of the unnecessary handover of the different system according to the candidate E-UTRAN cell list. Specifically, according to the candidate E-UTRAN cell, only the handover source cell is included, and it is determined that the different system is unnecessary.
  • the type of fault that is switched is that the timing of the handover to the neighboring system is too early, and it is noted that the timing of switching to the GERAN neighbor is too early;
  • Step 306 The eNodeB where the cell A is located counts the number of times the GERAN neighboring cell handover timing occurs prematurely and determines whether the threshold is reached. If yes, the process jumps to 307. Otherwise, the current process ends.
  • Step 307 The eNodeB where the cell A is located sends a request for the frequency offset Ofn of the GERAN neighboring cell to the background network management.
  • Step 308 After receiving the message that the parameter adjustment succeeded by the background network management is successful, the eNodeB where the cell A is located sets the number of premature handover times to the GERAN neighboring area to zero to start the next round of statistics.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the scenario given in this embodiment is that the UE switches from the LTE network E-UTRAN cell to the different system UT AN cell, and the fault type of the different system unnecessary handover is too late to the same system cell handover timing.
  • the UE moves from the cell A in the direction of the arrow.
  • the handover point HO Triggering
  • the UE is switched to the different system neighbor B.
  • the cell A is an E-UTRAN cell
  • the cell 8 is a 1711 cell.
  • the method for unnecessary switching optimization in this embodiment includes:
  • Step 401 After the UE performs handover from the cell A to the neighboring system B, the eNodeB where the cell B is located notifies the UE to perform coverage measurement.
  • Step 402 The UE performs measurement coverage and reports the measurement result to the eNodeB where the cell B is located. Specifically, the UE measures the coverage of the cell C at the current location, and writes the identifier of the cell C into the candidate E-UTRAN cell list and reports it to the cell. B, where cell C is an E-UTRAN cell.
  • Step 403 The eNodeB where the cell B is located determines the handover report information according to the measurement result, and sends the information to the eNodeB where the cell A is located.
  • the handover report message includes: a handover report type, a handover type, and a candidate E-UTRAN cell list; the handover report message may be carried in the MME Direct Information Transfer and sent to the eNodeB where the cell A is located.
  • Step 404 The eNodeB where the cell A is located determines, according to the handover report message, that the handover is an unnecessary handover of the serving cell to the UTRAN of the different system cell;
  • Step 405 The eNodeB where the cell A is located determines the fault type of the unnecessary handover of the different system according to the candidate E-UTRAN cell list. Specifically, the candidate E-UTRAN cell includes only the E-UTRAN neighbor cell C, and the cell C and the handover source cell A have a neighbor relationship, and the fault type of the unnecessary handover of the different system is determined to be the same system neighboring cell handover. The timing is too late, it is recorded that the E-UTRAN neighboring handover timing is too late; Step 406: The eNodeB where the cell A is located counts the number of times the E-UTRAN neighboring handover timing occurs too late and determines whether the threshold is reached. If it is reached, jump Go to step 407, otherwise, end the current process; request for a specific offset Ocn;
  • Step 408 After receiving the message that the parameter adjustment succeeded by the background network management system is received, the eNodeB of the cell A sets the number of times the E-UTRAN neighboring cell handover timing is too late to start the next round of statistics.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the scenario given in this embodiment is that the UE does not need to switch from the E-UTRAN 'J, the area to the UTRAN cell of the different system, and the type of the fault that is not necessary to switch is the same as the timing of the handover to the different system neighboring area and to the same system neighbor. The time to switch the zone is too late.
  • FIG. 5a is a schematic diagram showing that the timing of the handover to the different system neighboring zone is too early and the timing of the handover to the neighboring system of the same system is too late.
  • the UE moves from the LTE system cell A in the direction of the arrow, and when the handover point is reached, HO In the case of Triggering, handover is performed to the neighboring cell B of the different system; wherein the cell A is an E-UTRAN cell and the cell B is a UT AN cell.
  • the optimization method for unnecessary handover in this embodiment includes:
  • Step 501 After the UE performs handover from the LTE cell A to the inter-system neighbor cell B, the eNodeB where the cell B is located notifies the UE to perform coverage measurement.
  • Step 502 The UE performs measurement coverage and reports the measurement result to the eNodeB where the cell B is located. Specifically, the UE measures the coverage of the cell A and the cell C at the current location, and writes the identifiers of the cell A and the cell C into the candidate E-UTRAN. The cell list is reported to the cell B, where the cell C It is an E-UTRAN cell.
  • Step 503 The eNodeB where the cell B is located determines the handover information according to the measurement result and sends the information to the eNodeB where the cell A is located.
  • the handover report message includes: a handover report type, a handover type, and a candidate E-UTRAN cell list, where the handover report message may be carried in the MME Direct Information Transfer and sent to the eNodeB where the cell A is located.
  • Step 504 The eNodeB where the cell A is located determines, according to the handover report message, that the handover is an unnecessary handover of the serving cell to the different system UTRAN cell;
  • Step 505 The eNodeB where the cell A is located determines the fault type of the unnecessary handover of the different system according to the candidate E-UTRAN cell list.
  • the E-UTRAN cell C and the handover source cell A are simultaneously included, and the cell C and the cell A have a neighbor relationship, and the fault type of the unnecessary handover of the different system is determined to be the simultaneous existence to the different system.
  • the timing of the handover of the neighboring area is too early and the timing of the handover to the neighboring system is too late. It is noted that the timing of handover to the heterogeneous UTRAN neighbor is too early and the handover timing to the E-UTRAN neighbor is too late.
  • Step 506 The eNodeB where the cell A is located counts the number of times when the handover timing of the heterogeneous UTRAN neighboring cell is too early and the switching timing to the E-UTRAN neighboring cell is too late, and determines whether the threshold is reached, and according to the judgment result, correspondingly Processing; specific:
  • the eNodeB where the cell A is located sends a request for the frequency offset Ofn of the UTRAN neighboring cell to the background network manager, so that the UE moves to the neighboring system of the different system.
  • the GERAN handover is more difficult, and after receiving the message that the parameter adjustment succeeded by the background network management is successful, the number of times before the UTRAN neighbor handover timing of the different system is set to zero, to start the next round of statistics;
  • the eNodeB where the cell A is located sends a request for the specific offset Ocn of the E-UTRAN neighboring cell to the background network management. It is easier to switch the UE to the neighboring E-UTRAN, and after receiving the message that the parameter adjustment succeeded by the background network management is successful, the number of times the E-UTRAN neighboring cell switching timing is too late is set to zero to start the next round of statistics;
  • FIG. 6 is a schematic diagram of an apparatus for optimizing unnecessary switching provided by the present invention.
  • the apparatus includes: an identification module 61, a statistics module 62, and a sending module 63.
  • the identification module 61 is configured to identify the type of the fault that is not necessary to be switched, and notify the statistic module 62.
  • the statistic module 62 is configured to count the number of times of unnecessary switching of the fault type, and the same kind of unnecessary handover in the same kind of system cell.
  • the sending module 63 is notified; the sending module 63 is configured to send a corresponding request message according to the fault type of the unnecessary handover that reaches the set threshold.
  • the apparatus may further include a receiving module 64 configured to receive a handover report message sent by the handover target cell, and notify the identification module 61; and configured to receive a parameter adjustment success message sent by the background network controller, and notify the statistics.
  • a receiving module 64 configured to receive a handover report message sent by the handover target cell, and notify the identification module 61; and configured to receive a parameter adjustment success message sent by the background network controller, and notify the statistics.
  • a receiving module 64 configured to receive a handover report message sent by the handover target cell, and notify the identification module 61; and configured to receive a parameter adjustment success message sent by the background network controller, and notify the statistics.
  • a receiving module 64 configured to receive a handover report message sent by the handover target cell, and notify the identification module 61
  • a parameter adjustment success message sent by the background network controller and notify the statistics.
  • the statistic module 62 is further configured to, according to the received parameter adjustment success message, zero the corresponding number of statistics.
  • the handover report message includes: a handover report type, a handover type, and a candidate E-UTRAN cell list; wherein the candidate E-UTRAN cell list indicates that the UE measures the location of the covered E-UTRAN cell;
  • the identification module 61 determines whether the handover is unnecessary according to the handover report type in the handover report message; distinguishes the specific type of the handover according to the handover type, and determines the fault type of the unnecessary handover according to the candidate E-UTRAN cell list. Specifically:
  • the candidate E-UTRAN cell only includes the handover source cell, it indicates that the E-UTRAN handover source cell can still be detected after the occurrence of the different system handover, and the UE should continue to camp on the LTE.
  • Network without the need to switch to a different system network too early. Therefore, in this case, it is determined that the type of failure that is not necessary to switch is too early to switch to the adjacent system, and it is noted that the timing of switching to the adjacent system is too early;
  • the candidate E-UTRAN cell does not include the handover source cell, but includes other E-UTRAN cells, and one of the other E-UTRAN cells has a neighbor relationship with the handover source cell, it indicates that E- cannot be detected after the different system handover.
  • the UTRAN switches the source cell, there is no premature handover to the neighboring cell of the different system; and the neighboring cell of the E-UTRAN handover source cell can be detected, indicating that the E-UTRAN neighboring cell is available in the E-UTRAN handover source cell at the handover point. But there is no switching. Therefore, in this case, it is determined that the type of failure that is unnecessary to switch is too late to switch to the neighboring system of the same system, and it is recorded that the timing of switching to the E-UTRAN neighboring area is too late;
  • the candidate E-UTRAN cell includes both the E-UTRAN handover source cell and other E-UTRAN cells, and one of the other E-UTRAN cells has a neighbor relationship with the handover source cell, according to the above analysis, the situation is determined.
  • the type of fault that needs to be switched is that the timing of the handover to the adjacent system is too early and the timing of the handover to the neighboring system is too late. It is recorded as the timing of the handover to the adjacent system and the timing of the handover to the E-UTRAN neighbor. Too late.
  • the E-UTRAN neighbor relationship mismatch processing according to the prior art is not involved in the present invention.
  • the sending module 63 is configured to send the corresponding request message according to the fault type of the unnecessary handover that reaches the set threshold, which is specifically:
  • a request for adjusting the frequency offset 0 of the neighboring system neighboring cell is sent to the gateway backstage;
  • the request to the gateway back office is transmitted to adjust the specific offset Ocn of the neighboring system.
  • the system includes Source cell base station, target cell base station, and UE.
  • the source cell is an LTE network cell;
  • the target cell is an inter-RAT cell, for example, it may be a UTRAN cell or a GERAN cell.
  • the source cell and the target cell have a neighbor relationship.
  • the specific implementation of the system to handle unnecessary switching is as follows:
  • Step 701 After the UE performs handover from the source cell to the target cell, the target cell base station notifies the UE to perform coverage measurement.
  • the coverage measurement includes at least measuring a cell that has coverage at a current location
  • Step 702 The UE performs measurement coverage and reports the measurement result to the target cell base station.
  • the measurement result includes at least a candidate E-UTRAN cell list, where the candidate E-UTRAN cell list is written with the identifier of the E-UTRAN cell that has coverage at the current location. .
  • Step 703 The target cell base station determines a handover report message according to the measurement result, and sends the message to the source cell base station.
  • the handover report message includes: a handover report type, a handover type, and a candidate E-UTRAN cell list; the handover report message may be carried in the MME Direct Information Transfer to the source cell base station.
  • Step 704 The source cell base station determines, according to the handover report message, whether it is an unnecessary handover of the different system, and if yes, further determines the specific type of the different system handover, for example: the different system cell is UTRAN, or GERAN, etc., and jumps to Step 705; if not, ending the current process;
  • the type of the handover report in the handover report message whether it is an unnecessary handover of the different system, and the specific type of the handover is differentiated according to the handover type, and the statistics are separately processed.
  • Step 705 The source cell base station determines, according to the candidate E-UTRAN cell list, a fault type that the different system does not need to switch;
  • the candidate E-UTRAN cell only includes the handover source cell, it is determined that the failure type of the unnecessary handover is too early to switch to the different system neighboring zone, and it is noted that the handover timing to the heterogeneous system neighboring zone is too early; If the candidate E-UTRAN cell does not include the handover source cell but includes other E-UT AN cells, and one of the other E-UTRAN cells has a neighbor relationship with the handover source cell, it is determined that the failure type of the unnecessary handover is The timing of switching with the neighboring system is too late, and it is noted that the timing of switching to the E-UTRAN neighboring area is too late;
  • the candidate E-UTRAN cell includes both the E-UTRAN handover source cell and other E-UTRAN cells, and one of the other E-UTRAN cells has a neighbor relationship with the handover source cell, it is determined that the fault type of the unnecessary handover is simultaneous It is too early to switch to the neighboring zone of the different system and the timing of the switching to the neighboring zone of the same system. It is noted that the timing of the handover to the adjacent system is too early and the timing of the handover to the E-UTRAN neighbor is too late.
  • Step 706 The source cell base station determines statistics and determines whether the timing of the handover of the neighboring system of the different system is too early and the number of times when the timing of the handover to the neighboring system of the same system is too late, and the corresponding threshold is processed according to the judgment result; :
  • the source cell base station When the number of premature handovers to the UTRAN neighboring cell of the different system reaches the set threshold, the source cell base station sends a request for the frequency offset Ofn of the UTRAN neighboring cell to the background network manager, so that the UE switches to the GERAN of the different system neighboring cell. It is more difficult, and after receiving the message that the parameter adjustment succeeded by the background network management is successful, the number of times before the UTRAN neighboring cell switching timing of the different system is set to zero;
  • the source cell base station When the number of times when the E-UTRAN neighbor handover timing is too late reaches the set threshold, the source cell base station sends a request for the specific offset Ocn of the E-UTRAN neighbor to the background network to enable the UE to switch to the neighbor E-UTRAN. It is easier, and after receiving the message that the parameter adjustment success sent by the background network management is successful, the number of times the E-UTRAN neighboring cell switching timing is too late is set to zero;
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can be applied to one or more of its A computer program product embodied on a computer usable storage medium (including but not limited to disk storage and optical storage, etc.) containing computer usable program code.
  • a computer usable storage medium including but not limited to disk storage and optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • the embodiment of the present invention further provides a computer storage medium, wherein a computer program is stored, and the computer program is used to execute a processing method of unnecessary switching in the embodiment of the present invention.

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

Abstract

L'invention concerne un procédé pour traiter des transferts intercellulaires inutiles. Le procédé consiste : à identifier un type d'anomalie d'un transfert intercellulaire inutile ; à compter le nombre de fois où des transferts intercellulaires inutiles de différents types d'anomalies se produisent ; et lorsque le nombre de fois où un transfert intercellulaire inutile d'un certain type d'anomalie se produit atteint un seuil réglé, à envoyer un message de requête pour régler des paramètres correspondants. L'invention concerne également un dispositif et un système pour traiter des transferts intercellulaires inutiles.
PCT/CN2014/082281 2013-12-30 2014-07-15 Procédé, dispositif et système pour traiter des transferts intercellulaires inutiles Ceased WO2015101013A1 (fr)

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MYPI2016702442A MY184779A (en) 2013-12-30 2014-07-15 Method, device and system for processing unnecessary handover
JP2016543118A JP6289644B2 (ja) 2013-12-30 2014-07-15 不必要なハンドオーバーの処理方法、装置及びシステム

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