DYNAMIC SWITCHING BETWEEN COMMON REFERENCE SIGNAL INTERFERENCE CANCELATION AND RESOURCE ELEMENT PUNCTURING IN A CO-CHANNEL HETEROGENEOUS NETWORK
First Claim
1. A method for wireless communications, comprising:
- identifying subframes with interference between transmissions of a serving Node B and one or more non-serving Node Bs, wherein the subframes are identified based on cooperative partitioning of resources between the serving Node B and the one or more non-serving Node Bs;
measuring a parameter related to the interference; and
based on the measured parameter, determining whether to puncture resource elements (REs) of the subframes or to perform common reference signal interference cancellation (CRS IC) to reduce the interference.
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Accused Products
Abstract
Communication in a dominant interference scenario may be supported by performing inter-cell interference coordination (ICIC). Resource coordination/partitioning may be performed to allocate resources to a serving Node B located near the vicinity of a strong interfering Node B. The interfering Node B may avoid transmitting on the allocated/protected resources, possibly except for a common reference signal (CRS). A UE can then communicate with the serving Node B on the protected resources in the presence of the interfering Node B and may observe no interference (possibly except for the CRS) from the interfering Node B. When CRS tones of an interferer may collide with control/data tones of a serving cell, CRS interference cancellation (CRS IC) or puncturing of interfered resource elements (REs) may be appropriate. Certain aspects of the present disclosure provide techniques, where the UE may dynamically switch between CRS IC and RE puncturing based on certain parameters.
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Citations
44 Claims
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1. A method for wireless communications, comprising:
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identifying subframes with interference between transmissions of a serving Node B and one or more non-serving Node Bs, wherein the subframes are identified based on cooperative partitioning of resources between the serving Node B and the one or more non-serving Node Bs; measuring a parameter related to the interference; and based on the measured parameter, determining whether to puncture resource elements (REs) of the subframes or to perform common reference signal interference cancellation (CRS IC) to reduce the interference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus for wireless communications, comprising:
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means for identifying subframes with interference between transmissions of a serving Node B and one or more non-serving Node Bs, wherein the subframes are identified based on cooperative partitioning of resources between the serving Node B and the one or more non-serving Node Bs; means for measuring a parameter related to the interference; and based on the measured parameter, means for determining whether to puncture resource elements (REs) of the subframes or to perform common reference signal interference cancellation (CRS IC) to reduce the interference. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An apparatus for wireless communications, comprising:
at least one processor configured to; identify subframes with interference between transmissions of a serving Node B and one or more non-serving Node Bs, wherein the subframes are identified based on cooperative partitioning of resources between the serving Node B and the one or more non-serving Node Bs; measure a parameter related to the interference; and based on the measured parameter, determine whether to puncture resource elements (REs) of the subframes or to perform common reference signal interference cancellation (CRS IC) to reduce the interference; and
a memory coupled to the at least one processor.- View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A computer-program product for wireless communications, the computer-program product comprising:
a computer-readable medium having code for; identifying subframes with interference between transmissions of a serving Node B and one or more non-serving Node Bs, wherein the subframes are identified based on cooperative partitioning of resources between the serving Node B and the one or more non-serving Node Bs; measuring a parameter related to the interference; and based on the measured parameter, determining whether to puncture resource elements (REs) of the subframes or to perform common reference signal interference cancellation (CRS IC) to reduce the interference. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
Specification