Interference mitigation by puncturing transmission of interfering cells
First Claim
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1. A method that facilitates controlling interference in a wireless communication environment, comprising:
- determining a first transmit power for a first transmission symbol from a puncturing pattern as a function of a cell identifier (ID) of an interfering base station and a first transmit time in a first subframe;
determining a second transmit power for a second transmission symbol from the puncturing pattern as a function of the cell ID and a second transmit time in a second subframe,wherein the puncturing pattern is defined on a subframe basis and sets the first transmit power for the first transmission symbol in the first subframe from a frame at a first level and sets the second transmit power for the second transmission symbol in the second subframe from the frame at a second level that is lower than the first level;
sending the first transmission symbol at the first transmit power; and
sending the second transmission symbol at the second transmit power.
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Abstract
Systems and methodologies are described that facilitate controlling interference in a heterogeneous wireless communication environment. A Physical Broadcast Channel (PBCH) transmission from an interfering base station can be punctured based upon a puncturing pattern as a function of a cell identifier (ID) and a transmit time. Puncturing can be effectuated by applying power control. Thus, a punctured symbol or subframe can have a reduced transmit power or a transmit power set to zero. Further, the puncturing pattern can be defined on a subframe basis or on a symbol basis.
199 Citations
41 Claims
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1. A method that facilitates controlling interference in a wireless communication environment, comprising:
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determining a first transmit power for a first transmission symbol from a puncturing pattern as a function of a cell identifier (ID) of an interfering base station and a first transmit time in a first subframe; determining a second transmit power for a second transmission symbol from the puncturing pattern as a function of the cell ID and a second transmit time in a second subframe, wherein the puncturing pattern is defined on a subframe basis and sets the first transmit power for the first transmission symbol in the first subframe from a frame at a first level and sets the second transmit power for the second transmission symbol in the second subframe from the frame at a second level that is lower than the first level; sending the first transmission symbol at the first transmit power; and sending the second transmission symbol at the second transmit power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method that facilitates controlling interference in a heterogeneous wireless communication environment, comprising:
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determining a first transmit power for a first transmission symbol from a puncturing pattern as a function of a cell identifier (ID) of an interfering base station and a first transmit time; determining a second transmit power for a second transmission symbol from the puncturing pattern as a function of the cell ID and a second transmit time, wherein the puncturing pattern is defined on a symbol basis and sets a transmit power for the first transmission symbol from a frame at a first level and sets a second transmit power for the second transmission symbol from the frame at a second level that is lower than the first level to puncture the second transmission symbol; sending the first transmission symbol at the first transmit power; and sending the second transmission symbol at the second transmit power. - View Dependent Claims (15)
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16. A wireless communications apparatus, comprising:
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a memory that retains instructions related to determining a first transmit power for a first transmission symbol from a puncturing pattern as a function of a cell identifier (ID) of an interfering base station and a first transmit time in a first subframe, determining a second transmit power for a second transmission symbol from the puncturing pattern as a function of the cell ID and a second transmit time in a second subframe, wherein the puncturing pattern is defined on a subframe basis and sets the first transmit power for the first transmission in the in the first subframe from a frame at a first level and sets the second transmit power for a second transmission symbol in the second subframe from the frame at a second level that is lower than the first level, broadcasting the first transmission symbol at the first transmit power, and broadcasting the second transmission symbol at the second transmit power; and a processor, coupled to the memory, configured to execute the instructions retained in the memory. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 27)
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25. A wireless communications apparatus, comprising:
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a memory that retains instructions related to determining a first transmit power for a first transmission symbol from a puncturing pattern as a function of a cell identifier (ID) of an interfering base station and a first transmit time, determining a second transmit power for a second transmission symbol from the puncturing pattern as a function of the cell ID and a second transmit time, broadcasting the first transmission symbol at the first transmit power, and broadcasting the second transmission symbol at the second transmit power; and a processor, coupled to the memory, configured to execute the instructions retained in the memory, wherein the puncturing pattern is defined on a symbol basis and sets the first transmit power for the first transmission symbol from a frame at a first level and sets the second transmit power for the second transmission symbol from the frame at a second level that is lower than the first level to puncture the second transmission symbol. - View Dependent Claims (26)
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28. A wireless communications apparatus that enables managing interference in a heterogeneous wireless communication environment, comprising:
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means for determining a first transmit power for a transmission symbol from a puncturing pattern as a function of a cell identifier (ID) of an interfering base station and a first transmit time in a first subframe and determining a second transmit power for a second transmission symbol from the puncturing pattern as a function of the cell ID and a second transmit time in a second subframe, wherein the puncturing pattern is defined on a subframe basis and sets the first transmit power for the first transmission symbol in the first subframe from a frame at a first level and sets a transmit power for a second transmission symbol in the second subframe from the frame at a second level that is lower than the first level; and means for sending the first transmission symbol at the first transmit power and sending the second transmission symbol at the second transmit power. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A computer program product, comprising:
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a non-transitory computer-readable medium comprising; code for determining a first transmit power for a first transmission symbol from a puncturing pattern as a function of a cell identifier (ID) of an interfering base station and a first transmit time in a first subframe; code for determining a second transmit power for a second transmission symbol from the puncturing pattern as a function of the cell ID and a second transmit time in a second subframe, wherein the puncturing pattern is defined on a subframe basis and sets the first transmit power for the first transmission symbol in the first subframe from a frame at a first level and sets the second transmit power for the second transmission symbol in the second subframe from the frame at a second level that is lower than the first; code for sending the first transmission symbol at the first transmit power; and code for sending the second transmission symbol at the second transmit power. - View Dependent Claims (36, 37)
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38. A wireless communications apparatus, comprising:
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a processor configured to; determine a first transmit power for a first transmission symbol from a puncturing pattern as a function of a cell identifier (ID) of an interfering base station and a first transmit time in a first subframe; determine a second transmit power for a second transmission symbol from the puncturing pattern as a function of the cell ID and a second transmit time in a second subframe, wherein the puncturing pattern is defined on a subframe basis and sets the first transmit power for the first transmission symbol in the first subframe from a frame at a first level and sets a transmit power for the second transmission symbol in the second subframe from the frame at a second level that is lower than the first level; send the first transmission symbol at the first transmit power; and send the second transmission symbol at the second transmit power.
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39. A wireless communications apparatus that enables managing interference in a wireless communication environment, comprising:
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means for determining a first transmit power for a first transmission symbol from a puncturing pattern as a function of a cell identifier (ID) of an interfering base station and a first transmit time and determining a second transmit power for a second transmission symbol from the puncturing pattern as a function of the cell ID and a second transmit time, wherein the puncturing pattern is defined on a symbol basis and sets a transmit power for the first transmission symbol from a frame at a first level and sets a transmit power for the second transmission symbol from the frame at a second level that is lower than the first level to puncture the second transmission symbol; and means for sending the first transmission symbol at the first transmit power and sending the second transmission symbol at the second transmit power.
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40. A computer program product, comprising:
a non-transitory computer-readable medium comprising; code for determining a first transmit power for a first transmission symbol from a puncturing pattern as a function of a cell identifier (ID) of an interfering base station and a first transmit time; code for determining a second transmit power for a second transmission symbol from the puncturing pattern as a function of the cell ID and a second transmit time, wherein the puncturing pattern is defined on a symbol basis and sets a transmit power for the first transmission symbol from a frame at a first level and sets a transmit power for the second transmission symbol from the frame at a second level that is lower than the first level to puncture the second transmission symbol; code for sending the first transmission symbol at the first transmit power; and code for sending the second transmission symbol at the second transmit power.
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41. A wireless communications apparatus, comprising:
a processor configured to; determine a first transmit power for a first transmission symbol from a puncturing pattern as a function of a cell identifier (ID) of an interfering base station and a first transmit time; determine a second transmit power for a second transmission symbol from the puncturing pattern as a function of the cell ID and a second transmit time, wherein the puncturing pattern is defined on a symbol basis and sets a transmit power for the first transmission symbol from a frame at a first level and sets a transmit power for the second transmission symbol from the frame at a second level that is lower than the first level to puncture the second transmission symbol; send the first transmission symbol at the first transmit power; and send the second transmission symbol at the second transmit power.
Specification