Device and method for modifying cell measurements based on device mobility
First Claim
1. A user equipment (UE) comprising:
- an interface configured to receive a plurality of signals from one or more cells, with each cell associated with an evolved node B (eNB); and
circuitry configured to;
determine the plurality of signals from one or more cells;
determine a first value for a first performance metric associated with a first cell of the one or more cells, wherein the first value is determined from a first measurement;
select the first cell for a first communication based on the first value;
determine first location information associated with the UE;
determine, following the first measurement and using the first location information, whether the UE is stationary;
delay, in response to a determination that the UE is stationary, a second measurement of the first performance metric;
based on the selection of the first cell, periodically determine a value for the first performance metric associated with the first cell following the determination that the UE is stationary;
wherein the delay, in response to the determination that the UE is stationary, of the second measurement comprises delaying a determination of a second value for the first performance metric associated with a second cell of the one or more cells that is different than the first cell.
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Accused Products
Abstract
User Equipment (UE), computer readable media, and methods to modify communication channel measurement timing based on a mobility of the UE are disclosed. The UE may include circuitry configured to determine a plurality of signals from one or more cells, determine a first value for a first performance metric associated with a first cell of the one or more cells, wherein the first value is determined from a first measurement, select the first cell for a first communication based on the first value, determine first location information associated with the UE, determine, following the first measurement and using the first location information, that the UE is stationary, and delay, in response to the determination that the UE is stationary, a second measurement of the first performance metric. In various alternate embodiments, different measurement types may be used for mobility and channel quality determinations. In further embodiments, only measurements for unused channels may be delayed.
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Citations
25 Claims
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1. A user equipment (UE) comprising:
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an interface configured to receive a plurality of signals from one or more cells, with each cell associated with an evolved node B (eNB); and circuitry configured to; determine the plurality of signals from one or more cells; determine a first value for a first performance metric associated with a first cell of the one or more cells, wherein the first value is determined from a first measurement; select the first cell for a first communication based on the first value; determine first location information associated with the UE; determine, following the first measurement and using the first location information, whether the UE is stationary; delay, in response to a determination that the UE is stationary, a second measurement of the first performance metric; based on the selection of the first cell, periodically determine a value for the first performance metric associated with the first cell following the determination that the UE is stationary; wherein the delay, in response to the determination that the UE is stationary, of the second measurement comprises delaying a determination of a second value for the first performance metric associated with a second cell of the one or more cells that is different than the first cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for selecting a first cell comprising:
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determining, by a user equipment (UE) comprising processing circuitry and wireless communication circuitry, a plurality of wireless signals from a plurality of cells; determining a first signal quality for a first cell of the plurality of cells, wherein the first signal quality is determined from a first measurement of a first wireless signal; determining a second signal quality for a second cell of the plurality of cells, wherein the second signal quality is determined from a second measurement of a second wireless signal; selecting the first cell for a first communication based on a comparison of the second signal quality to the first signal quality; determining first location information associated with the UE; and delaying, based on the first location information a third measurement for a third signal quality determination; determining a plurality of signals from the first cell, wherein each signal of the plurality of signals is at least one from the following group;
a reference signal receive power (RSRP), a reference signal receive quality (RSRQ), a received signal strength indicator (RSSI), a signal-to-noise ratio (SNR), a signal-to-interference-ratio (SIR), a signal-to-interference-plus-noise ratio (SINR), and a channel quality indication (CQI);determining a second plurality of signals from the second cell, wherein each signal of the second plurality of signals is at least one from the following group;
a reference signal receive power (RSRP), a reference signal receive quality (RSRQ), a received signal strength indicator (RSSI), a signal-to-noise ratio (SNR), a signal-to-interference-ratio (SIR), a signal-to-interference-plus-noise ratio (SINR), and a channel quality indication (CQI);determining a plurality of offsets between each signal of the plurality of signals from the first cell and the corresponding signal of the second plurality of signals from the second cell; determining one or more measures for each of a window size of the plurality of offsets, wherein each measure of the one or more measures is at least one from the following group;
a variance of the plurality of offsets, a standard deviation of the plurality of offsets, a percent confidence interval (CI) of a mean of the plurality of offsets, and a linear combination of two or more of the one or more measures; anddetermining whether the UE is stationary based on the one or more measures. - View Dependent Claims (20, 21, 22, 23)
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24. A non-transitory computer readable medium comprising computer readable instructions that, when executed by one or more processors, causes a user equipment (UE) to:
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measure a first signal quality for a first connection from the UE to a first cell; measure a second signal quality for a second connection from the UE to a second cell; measure a mobility of the UE; adjust, based on the mobility of the UE, a subsequent signal quality measurement based on the mobility of the UE; and measure a third signal quality for a third connection to a third cell, wherein the third cell is different from the first cell and the second cell; wherein adjusting the subsequent signal quality measurement comprises delaying a fourth signal quality for the first connection, a fifth signal quality for the second connection, and a sixth signal quality for the third connection. - View Dependent Claims (25)
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Specification