Enhanced filters in a wireless communication system
First Claim
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1. An apparatus comprising:
- a receiver that;
detects a reference signal during a first time window of a plurality of time windows during which reception of the reference signal is expected; and
detects the reference signal during a second time window of the plurality of time windows, wherein the second time window occurs an offset time after the first time window; and
a processor that determines a filter coefficient based on the offset time, wherein the filter coefficient is used to generate a filtered measurement, the processor determines the filter coefficient by summing a predetermined filter coefficient and a parameter derived as a function of the offset time, and the filter coefficient is used in a sigmoid forgetting filter.
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Abstract
Apparatuses, methods, and systems are disclosed for enhanced measurements and filters. One apparatus includes a receiver that detects a reference signal during a first time window of a set of time windows during which reception of the reference signal is expected and detects the reference signal during a second time window of the set of time windows. In various embodiments, the second time window occurs an offset time after the first time window. In some embodiments, the apparatus includes a processor that determines a filter coefficient based on the offset time. In such embodiments, the filter coefficient is used to generate a filtered measurement.
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Citations
17 Claims
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1. An apparatus comprising:
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a receiver that; detects a reference signal during a first time window of a plurality of time windows during which reception of the reference signal is expected; and detects the reference signal during a second time window of the plurality of time windows, wherein the second time window occurs an offset time after the first time window; and a processor that determines a filter coefficient based on the offset time, wherein the filter coefficient is used to generate a filtered measurement, the processor determines the filter coefficient by summing a predetermined filter coefficient and a parameter derived as a function of the offset time, and the filter coefficient is used in a sigmoid forgetting filter. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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detecting, by use of a receiver, a reference signal during a first time window of a plurality of time windows during which reception of the reference signal is expected; detecting the reference signal during a second time window of the plurality of time windows, wherein the second time window occurs an offset time after the first time window; and determining a filter coefficient based on the offset time, wherein the filter coefficient is used to generate a filtered measurement, determining the filter coefficient based on the offset time comprises determining the filter coefficient by summing a predetermined filter coefficient and a parameter derived as a function of the offset time, and the filter coefficient is used in a sigmoid forgetting filter. - View Dependent Claims (9, 10, 11, 12)
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13. A method comprising:
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detecting, by use of a receiver, a reference signal during a first time window of a plurality of time windows during which reception of the reference signal is expected; detecting the reference signal during a second time window of the plurality of time windows, wherein the second time window occurs an offset time after the first time window; and determining a filtered measurement based on a previous filtered measurement and a filter parameter, wherein the filter parameter is derived based on the offset time, the filter parameter is determined as a product of a predetermined filter parameter and a result of a mathematical function of the offset time, and the filter coefficient is used in a sigmoid forgetting filter. - View Dependent Claims (14, 15, 16, 17)
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Specification