METHODS AND APPARATUS FOR RADIO LINK MONITORING IN NEW CARRIER TYPE (NCT) IN A LONG TERM EVOLUTION (LTE) SYSTEM
First Claim
1. A method for wireless communications by a user equipment (UE), comprising:
- determining at least one of a first set of channel state information reference signal (CSI-RS) resources for use in channel estimation to perform radio link monitoring (RLM) measurements or a second set of CSI-RS resources for use in interference estimation to perform the RLM measurements; and
performing the RLM measurements based on the one or more determined sets of CSI-RS resources.
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Accused Products
Abstract
Certain aspects provide methods and apparatus for performing radio link monitoring (RLM) based on channel state information reference signals (CSI-RSs). Such RLM may be performed for certain carriers, such as New Carrier Type (NCT) in a Long Term Evolution (LTE) system, for example, in which reference signals conventionally used for RLM (e.g., common reference signals (CRSs) in LTE Rel-8/9/10) are not available in every subframe. Radio link failure (RLF) may be declared based on the RLM. One example method generally includes determining at least one of a first set of CSI-RS resources for use in channel estimation to perform RLM measurements or a second set of CSI-RS resources for use in interference estimation to perform the RLM measurements and performing the RLM measurements based on the one or more determined sets of CSI-RS resources. Certain aspects provide methods and apparatus for performing radio resource management (RRM) based on CSI-RSs.
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Citations
52 Claims
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1. A method for wireless communications by a user equipment (UE), comprising:
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determining at least one of a first set of channel state information reference signal (CSI-RS) resources for use in channel estimation to perform radio link monitoring (RLM) measurements or a second set of CSI-RS resources for use in interference estimation to perform the RLM measurements; and performing the RLM measurements based on the one or more determined sets of CSI-RS resources. - 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. An apparatus for wireless communications, comprising:
a processing system configured to; determine at least one of a first set of channel state information reference signal (CSI-RS) resources for use in channel estimation to perform radio link monitoring (RLM) measurements or a second set of CSI-RS resources for use in interference estimation to perform the RLM measurements; and perform the RLM measurements based on the one or more determined sets of CSI-RS resources. - 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. An apparatus for wireless communications, comprising:
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means for determining at least one of a first set of channel state information reference signal (CSI-RS) resources for use in channel estimation to perform radio link monitoring (RLM) measurements or a second set of CSI-RS resources for use in interference estimation to perform the RLM measurements; and means for performing the RLM measurements based on the one or more determined sets of CSI-RS resources.
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44. A computer program product for wireless communications by a user equipment (UE), comprising:
a computer-readable medium comprising code for; determining at least one of a first set of channel state information reference signal (CSI-RS) resources for use in channel estimation to perform radio link monitoring (RLM) measurements or a second set of CSI-RS resources for use in interference estimation to perform the RLM measurements; and performing the RLM measurements based on the one or more determined sets of CSI-RS resources.
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45. A method for wireless communications by a user equipment (UE), comprising:
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determining at least one of a first set of channel state information reference signal (CSI-RS) resources for use in channel estimation to perform radio resource management (RRM) measurements or a second set of CSI-RS resources for use in interference estimation to perform the RRM measurements; and performing the RRM measurements based on the one or more determined sets of CSI-RS resources. - View Dependent Claims (46)
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47. An apparatus for wireless communications, comprising:
a processing system configured to; determine at least one of a first set of channel state information reference signal (CSI-RS) resources for use in channel estimation to perform radio resource management (RRM) measurements or a second set of CSI-RS resources for use in interference estimation to perform the RRM measurements; and perform the RRM measurements based on the one or more determined sets of CSI-RS resources. - View Dependent Claims (48)
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49. An apparatus for wireless communications, comprising:
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means for determining at least one of a first set of channel state information reference signal (CSI-RS) resources for use in channel estimation to perform radio resource management (RRM) measurements or a second set of CSI-RS resources for use in interference estimation to perform the RRM measurements; and means for performing the RRM measurements based on the one or more determined sets of CSI-RS resources. - View Dependent Claims (50)
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51. A computer program product for wireless communications by a user equipment (UE), comprising:
a computer-readable medium comprising code for; determining at least one of a first set of channel state information reference signal (CSI-RS) resources for use in channel estimation to perform radio resource management (RRM) measurements or a second set of CSI-RS resources for use in interference estimation to perform the RRM measurements; and performing the RRM measurements based on the one or more determined sets of CSI-RS resources. - View Dependent Claims (52)
Specification