Narrowband time-division duplex frame structure for narrowband communications
First Claim
1. A method of wireless communication for a base station, comprising:
- determining whether to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications including one or more special subframes, wherein determining whether to transmit a narrowband physical downlink channel includes;
determining to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; and
determining to transmit the narrowband physical downlink channel in the subframe, if the subframe is a special subframe and a number of downlink orthogonal frequency division multiplexing (OFDM) symbols in the special subframe is greater than a predetermined threshold; and
transmitting the narrowband physical downlink channel.
1 Assignment
0 Petitions
Accused Products
Abstract
There is a need to support narrowband TDD frame structure for narrowband communications. The present disclosure provides a solution by supporting one or more narrowband TDD frame structure(s) for narrowband communications. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may determine to transmit a narrowband physical downlink channel in a subframe in a narrowband TDD frame structure of a plurality of narrowband TDD frame structures for narrowband communications. In addition, the apparatus may determine whether the subframe is a special subframe or a downlink subframe when the narrowband TDD frame structure includes one or more special subframes. Further, the apparatus may determine how to transmit a narrowband physical downlink channel based on the determination whether the subframe is a special subframe or a downlink subframe. Additionally, the apparatus may transmit the narrowband physical downlink channel.
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Citations
32 Claims
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1. A method of wireless communication for a base station, comprising:
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determining whether to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications including one or more special subframes, wherein determining whether to transmit a narrowband physical downlink channel includes; determining to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; and determining to transmit the narrowband physical downlink channel in the subframe, if the subframe is a special subframe and a number of downlink orthogonal frequency division multiplexing (OFDM) symbols in the special subframe is greater than a predetermined threshold; and transmitting the narrowband physical downlink channel. - View Dependent Claims (2, 3, 4, 5)
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6. A method of wireless communication for a base station, comprising:
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determining whether to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications including one or more special subframes, wherein determining whether to transmit a narrowband physical downlink channel includes; determining to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; and determining to transmit the narrowband physical downlink channel in the subframe, if the subframe is a special subframe, wherein the narrowband physical downlink channel is mapped to a subset of orthogonal frequency division multiplexing (OFDM) symbols punctured in the special subframe, and the subset of OFDM symbols punctured in the special subframe includes one or more OFDM symbols in a uplink portion of the special subframe; and transmitting the narrowband physical downlink channel. - View Dependent Claims (7)
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8. A method of wireless communication for a base station, comprising:
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determining whether to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications including one or more special subframes, wherein determining whether to transmit a narrowband physical downlink channel includes; determining to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; and determining to transmit the narrowband physical downlink channel in the subframe or rate matching the narrowband physical downlink channel based on a number of downlink orthogonal frequency division multiplexing (OFDM) symbols in the subframe, if the subframe is a special subframe; and transmitting the narrowband physical downlink channel.
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9. An apparatus for wireless communication for a base station, comprising:
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means for determining whether to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications including one or more special subframes, wherein the means for determining whether to transmit a narrowband physical downlink channel is configured to; determine to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; and determine to transmit the narrowband physical downlink channel in the subframe, if the subframe is a special subframe and a number of downlink orthogonal frequency division multiplexing (OFDM) symbols in the special subframe is greater than a predetermined threshold; and means for transmitting the narrowband physical downlink channel. - View Dependent Claims (10, 11, 12, 13)
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14. An apparatus for wireless communication for a base station, comprising:
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means for determining whether to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications including one or more special subframes, wherein the means for determining whether to transmit a narrowband physical downlink channel is configured to; determine to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; determine to transmit the narrowband physical downlink channel in the subframe, if the subframe is a special subframe, wherein the narrowband physical downlink channel is mapped to a subset of orthogonal frequency division multiplexing (OFDM) symbols punctured in the special subframe, and the subset of OFDM symbols punctured in the special subframe includes one or more OFDM symbols in a uplink portion of the special subframe; and means for transmitting the narrowband physical downlink channel. - View Dependent Claims (15)
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16. An apparatus for wireless communication for a base station, comprising:
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means for whether determining to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications including one or more special subframes, wherein the means for determining whether to transmit a narrowband physical downlink channel is configured to; determine to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; and determine to transmit the narrowband physical downlink channel in the subframe or rate matching the narrowband physical downlink channel based on a number of downlink orthogonal frequency division multiplexing (OFDM) symbols in the subframe, if the subframe is a special subframe; and means for transmitting the narrowband physical downlink channel. - View Dependent Claims (19, 20, 21)
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17. An apparatus for wireless communication for a base station, comprising:
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a memory; and at least one processor coupled to the memory and configured to; determine whether to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications including one or more special subframes, wherein the at least one processor is configured to determine whether to transmit a narrowband physical downlink channel by; determining to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; and determining to transmit the narrowband physical downlink channel in the subframe, if the subframe is a special subframe and a number of orthogonal frequency division multiplexing (OFDM) symbols in the special subframe is greater than a predetermined threshold; and transmit the narrowband physical downlink channel. - View Dependent Claims (18)
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22. An apparatus for wireless communication for a base station, comprising:
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a memory; and at least one processor coupled to the memory and configured to; determine whether to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications; determine whether the subframe is a special subframe or a downlink subframe when the narrowband TDD frame structure includes one or more special subframes including one or more special subframes, wherein the at least one processor is configured to determine whether to transmit a narrowband physical downlink channel by; determining to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; and determining to transmit the narrowband physical downlink channel in the subframe, if the subframe is a special subframe, wherein the narrowband physical downlink channel is mapped to a subset of orthogonal frequency division multiplexing (OFDM) symbols punctured in the special subframe, and the subset of OFDM symbols punctured in the special subframe includes one or more OFDM symbols in a uplink portion of the special subframe; and transmit the narrowband physical downlink channel. - View Dependent Claims (23)
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24. An apparatus for wireless communication for a base station, comprising:
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a memory; and at least one processor coupled to the memory and configured to; determine whether to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications including one or more special subframes, wherein the code to determine whether to transmit a narrowband physical downlink channel is configured to; determining to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; and determining to transmit the narrowband physical downlink channel in the subframe or rate matching the narrowband physical downlink channel based on a number of downlink orthogonal frequency division multiplexing (OFDM) symbols in the subframe, if the subframe is a special subframe; and transmit the narrowband physical downlink channel.
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25. A computer-readable medium storing computer executable code for a base station, comprising code to:
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determine whether to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications including one or more special subframes, wherein the code to determine whether to transmit a narrowband physical downlink channel is configured to; determine to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; and determine to transmit the narrowband physical downlink channel in the subframe, if the subframe is a special subframe and a number of orthogonal frequency division multiplexing (OFDM) symbols in the special subframe is greater than a predetermined threshold; and transmit the narrowband physical downlink channel. - View Dependent Claims (26, 27, 28, 29)
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30. A computer-readable medium storing computer executable code for a base station, comprising code to:
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determine whether to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications including one or more special subframes, wherein the code to determine whether to transmit a narrowband physical downlink channel is configured to; determine to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; and determine to transmit the narrowband physical downlink channel in the subframe, if the subframe is a special subframe, the narrowband physical downlink channel is mapped to a subset of orthogonal frequency division multiplexing (OFDM) symbols punctured in the special subframe, and the subset of OFDM symbols punctured in the special subframe includes one or more OFDM symbols in a uplink portion of the special subframe; and transmit the narrowband physical downlink channel. - View Dependent Claims (31)
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32. A computer-readable medium storing computer executable code for a base station, comprising code to:
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determine whether to transmit a narrowband physical downlink channel in a subframe in a time-division duplex (TDD) frame structure of a plurality of TDD frame structures for narrowband communications including one or more special subframes, wherein the code to determine whether to transmit a narrowband physical downlink channel is configured to; determine to transmit the narrowband physical downlink channel in the subframe, if the subframe is a downlink subframe; and determine to transmit the narrowband physical downlink channel in the subframe or rate matching the narrowband physical downlink channel based on a number of downlink orthogonal frequency division multiplexing (OFDM) symbols in the subframe, if the subframe is a special subframe; and transmit the narrowband physical downlink channel.
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Specification