Mobility parameter adjustment and mobility state estimation in heterogeneous networks
First Claim
1. A method of operating user equipment (UE) in a wireless communications network, the method comprising:
- identifying, by the UE, a cell change type associated with a neighboring cell, wherein the cell change type is based, at least in part, on a transmission power level of the UE'"'"'s serving cell and a transmission power level of the neighboring cell;
determining, by the UE, one or more mobility parameters based on the cell change type, wherein the one or more mobility parameters include a timer-to-trigger parameter, the time-to-trigger parameter determined by applying a scaling factor associated with the cell change type to a nominal time-to-trigger value, the scaling factor associated with the cell change type is based, at least in part, on the transmission power level of the neighboring cell and the transmission power level of the UE'"'"'s serving cell; and
executing, by the UE, a mobility procedure with the neighboring cell using the one or more mobility parameters.
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Abstract
Systems and methods for mobility parameter adjustment and mobility state estimation in heterogeneous networks are provided. The mobility parameters may be adjusted based on the cell change types associated with the mobility procedure. The mobility procedure may be a cell handover procedure or a cell reselection procedure. The cell change type may be dependent on the transmission power level of the UE'"'"'s serving cell and neighboring cells. In some implementations, the UE may provide a speed information to the serving cell such that the serving eNB may prioritize or optimize the mobility procedure for the UE. The UE may also estimate its mobility state by counting the number of cell changes within certain period of time and applying scaling factors to the number of cell changes based on the associated cell change types.
30 Citations
62 Claims
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1. A method of operating user equipment (UE) in a wireless communications network, the method comprising:
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identifying, by the UE, a cell change type associated with a neighboring cell, wherein the cell change type is based, at least in part, on a transmission power level of the UE'"'"'s serving cell and a transmission power level of the neighboring cell; determining, by the UE, one or more mobility parameters based on the cell change type, wherein the one or more mobility parameters include a timer-to-trigger parameter, the time-to-trigger parameter determined by applying a scaling factor associated with the cell change type to a nominal time-to-trigger value, the scaling factor associated with the cell change type is based, at least in part, on the transmission power level of the neighboring cell and the transmission power level of the UE'"'"'s serving cell; and executing, by the UE, a mobility procedure with the neighboring cell using the one or more mobility parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. User equipment (UE) for operating in a wireless communications network, comprising one or more processors configured to:
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identify a cell change type associated with a neighboring cell, wherein the cell change type is based, at least in part, on a transmission power level of the UE'"'"'s serving cell and a transmission power level of the neighboring cell; determine one or more mobility parameters based on the cell change type, wherein the one or more mobility parameters include a timer-to-trigger parameter, the time-to-trigger parameter determined by applying a scaling factor associated with the cell change type to a nominal time-to-trigger value, the scaling factor associated with the cell change type is based, at least in part, on the transmission power level of the neighboring cell and the transmission power level of the UE'"'"'s serving cell; and execute a mobility procedure with the neighboring cell using the one or more mobility parameters. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A non-transitory computer-readable medium coupled to the one or more processors having instructions stored thereon which, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
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identifying a cell change type associated with a neighboring cell, wherein the cell change type is based, at least in part, on a transmission power level of a user equipment'"'"'s (UE) serving cell and a transmission power level of the neighboring cell; determining one or more mobility parameters based on the cell change type, wherein the one or more mobility parameters include a timer-to-trigger parameter, the time-to-trigger parameter determined by applying a scaling factor associated with the cell change type to a nominal time-to-trigger value, the scaling factor associated with the cell change type is based, at least in part, on the transmission power level of the neighboring cell and the transmission power level of the UE'"'"'s serving cell; and executing a mobility procedure with the neighboring cell using the one or more mobility parameters. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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Specification