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US 8,559,298 B2Granted
Method and apparatus for automatic handover optimization
AssigneeQUALCOMM Incorporated
InventorsAmer Catovic, Andrea Garavaglia, Sunil S. Patil
Life of this patent
Estimating the term…
Abstract
A method for wireless communications is provided. The method includes determining a set of handover parameters that facilitate a handover between cells in a wireless network and analyzing the set of handover parameters. The method includes dynamically adjusting the parameters to mitigate handover failures between the cells.
Claims28
A method for wireless communications, comprising:
- generating, by a network device, performance measurements relating to a handover failure rate in a wireless communications system;
- analyzing, based on measurement reports from user equipment, a set of handover parameters corresponding to the performance measurements;
- and
- dynamically adjusting, by the network device, at least one parameter from the set of handover parameters to mitigate failures relating to handovers between cells,
- wherein the set of handover parameters include time-to-trigger (TTT), an offset for a serving cell, a Cell Individual Offset (CIO), a cell-specific offset of a neighbor cell (OFS), a cell-specific offset of a serving cell (OCS), or a hysteresis parameter for an event.
2 more elements
A method for wireless communications, comprising:
- generating, by a network device, performance measurements relating to a handover failure rate in a wireless communications system;
- analyzing, based on measurement reports from user equipment, a set of handover parameters corresponding to the performance measurements;
- dynamically adjusting, by the network device, at least one parameter from the set of handover parameters to mitigate failures relating to handovers between cells;
- and
- detecting one or more failures relating to handovers that occur too early or handovers that occur too late, where early and late is defined by analyzing measurement reports or performance indicators and comparing to thresholds.
2 more elements
A communications apparatus, comprising:
- a memory that retains instructions for:
- generating, by the communications apparatus, performance measurements relating to a handover failure rate in a wireless communications system;
- processing, based on based on measurement reports from user equipment, a set of handover parameters corresponding to the performance measurements;
- and
- automatically adjusting by the communications apparatus one or more parameters from the set of handover parameters to mitigate failures associated with handovers between cells,
- wherein the set of handover parameters include time-to-trigger (TTT), an offset for a serving cell, a Cell Individual Offset (CIO), a cell-specific offset of a neighbor cell (OFS), a cell-specific offset of a serving cell (OCS), or a hysteresis parameter for an event;
- and
- a processor that executes the instructions.
5 more elements
A communications apparatus, comprising:
- a memory that retains instructions for:
- generating, by the communications apparatus, performance measurements relating to a handover failure rate in a wireless communications system;
- processing, based on based on measurement reports from user equipment, a set of handover parameters corresponding to the performance measurements;
- automatically adjusting by the communications apparatus one or more parameters from the set of handover parameters to mitigate failures associated with handovers between cells;
- and
- detecting one or more handover failures relating to handovers that occur too early or handovers that occur too late, where early and late is defined by analyzing measurement reports and comparing data from the measurement reports to thresholds;
- and
- a processor that executes the instructions.
5 more elements
A communications apparatus, comprising:
- means for generating, by the communications apparatus, performance measurements relating to a handover failure rate in a wireless communications system;
- means for processing, based on measurement reports from user equipment, a set of handover parameters that facilitate a handover between cells in a wireless network, wherein the set of handover parameters correspond to the performance measurements;
- means for analyzing feedback relating to the set of handover parameters;
- and
- means for adjusting at least one of the set of handover parameters to mitigate failures relating to handovers between the cells,
- wherein the feedback is related to a time-to-trigger (TTT), an offset for a serving cell, a Cell Individual Offset (CIO), a cell-specific offset of a neighbor cell (OFS), a cell-specific offset of a serving cell (OCS), or a hysteresis parameter for an event.
3 more elements
A computer program product comprising:
- a non-transitory computer-readable medium that includes code for managing handovers, the code comprising:
- code for causing a computer to generate performance measurements relating to a handover failure rate in a wireless communications system;
- code for causing a computer to analyze, based on measurement reports from user equipment, a set of handover parameters corresponding to the performance measurements;
- code for causing a computer to determine a range for the set of handover parameters;
- code for causing a computer to increase or decrease the handover parameters within the range in order to adjust when a handover occurs;
- and
- code for causing a computer to adjust how early or how late a handover occurs.
4 more elements
A method for wireless communications, comprising:
- generating, by a network device, performance measurements relating to a handover failure rate in a wireless communications system;
- processing, based on measurement reports from user equipment, a set of handover parameters corresponding to the performance measurements;
- and
- automatically adjusting at least one parameter from the set of handover parameters to mitigate failures relating to handover between cells,
- wherein the set of handover parameters include time-to-trigger (TTT), an offset for a serving cell, a Cell Individual Offset (CIO), a cell-specific offset of a neighbor cell (OFS), a cell-specific offset of a serving cell (OCS), or a hysteresis parameter for an event.
2 more elements
A method for wireless communications, comprising:
- generating, by a network device, performance measurements relating to a handover failure rate in a wireless communications system;
- processing, based on measurement reports from user equipment, a set of handover parameters corresponding to the performance measurements;
- automatically adjusting at least one parameter from the set of handover parameters to mitigate failures relating to handover between cells;
- and
- detecting one or more handover failures relating to handovers that occur too early or handovers that occur too late, where early and late is defined by analyzing measurement reports and comparing data from the measurement reports to timing thresholds.
2 more elements
A communications apparatus, comprising:
- a memory that retains instructions for:
- generating, by the communications apparatus, performance measurements relating to a handover failure rate in a wireless communications system;
- processing, based on measurement reports from user equipment, a set of handover parameters corresponding to the performance measurements;
- and
- automatically adjusting one or more parameters from the set of handover parameters to mitigate failures related to handovers between cells,
- wherein the set of handover parameters include time-to-trigger (TTT), an offset for a serving cell, a Cell Individual Offset (CIO), a cell-specific offset of a neighbor cell (OFS), a cell-specific offset of a serving cell (OCS), or a hysteresis parameter for an event;
- and
- a processor that executes the instructions.
5 more elements
A communications apparatus, comprising:
- means for generating, by a network device, performance measurements relating to a handover failure rate in a wireless communications system;
- means for processing, based on measurement reports from user equipment, a set of handover parameters that facilitate a handover between cells in a wireless network;
- means for processing feedback relating to the set of handover parameters, wherein the set of handover parameters correspond to the performance measurements;
- and
- means for adjusting at least one parameter from the set of handover parameters to mitigate failures related to handovers between the cells,
- wherein the feedback is related to a time-to-trigger (TTT), an offset for a serving cell, a Cell Individual Offset (CIO), a cell-specific offset of a neighbor cell (OFS), a cell-specific offset of a serving cell (OCS), or a hysteresis parameter for an event.
3 more elements
A computer program product comprising:
- a non-transitory computer-readable medium that includes code for managing handovers, the code comprising:
- code for causing a computer to generate performance measurements relating to a handover failure rate in a wireless communications system;
- code for causing a computer to generate, based on measurement reports from user equipment, a set of handover parameters corresponding to the performance measurements;
- code for causing a computer to process a range for the set of handover parameters code for causing a computer to increase or decrease the handover parameters within the range in order to adjust when a handover occurs;
- and
- code for causing a computer to adjust how early or how late a handover occurs.
3 more elements
Dependencies are inferred from the claim text.