Random reuse based control channels
First Claim
1. A method that facilitates communicating control information in wireless networks, comprising:
- receiving, at a communications apparatus, control information from a transmitting apparatus, the control information being received over one or more tiles that are a portion of a reserved control segment that is dedicated for transmitting the control information, wherein a tile comprises a set of tones that includes at least one pilot signal and the control information is multiplexed over a plurality of tiles to thereby increase the probability that at least a portion of the tiles are not interfered;
determining, at the communications apparatus, respective levels of interference affecting respective transmissions on the one or more tiles, wherein the respective level of interference affecting transmission on a tile is determined based at least in part on interference affecting transmission of the at least one pilot signal included in the tile; and
weighting, at the communications apparatus, the tiles for channel estimation for subsequent data decoding with a low probability of interference based at least in part on the respective levels of interference, wherein assignment of respective weights is dependent on the respectively associated levels of interference, such that the higher the level of interference, the lower the associated weight and vice versa, and such that a first tile is given less weight for the channel estimation than a second tile if the first tile has a higher level of interference than the second tile.
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Accused Products
Abstract
Systems and methodologies are described that facilitate wireless network transmitters blanking or reducing power on portions of bandwidth reserved for control information transmission. This mitigates interference from disparate transmitters. Furthermore, the control information portion can be divided into a plurality of OFDM tiles that are reusable by transmitters for transmitting the control information. In this regard, interference between transmitters is additionally mitigated as the transmitters can multiplex the control information over a plurality of tiles increasing the chance that at least a portion of the tiles are not interfered. The control information can be decoded by the receivers from the portion of tiles with a low probability of interference.
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Citations
23 Claims
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1. A method that facilitates communicating control information in wireless networks, comprising:
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receiving, at a communications apparatus, control information from a transmitting apparatus, the control information being received over one or more tiles that are a portion of a reserved control segment that is dedicated for transmitting the control information, wherein a tile comprises a set of tones that includes at least one pilot signal and the control information is multiplexed over a plurality of tiles to thereby increase the probability that at least a portion of the tiles are not interfered; determining, at the communications apparatus, respective levels of interference affecting respective transmissions on the one or more tiles, wherein the respective level of interference affecting transmission on a tile is determined based at least in part on interference affecting transmission of the at least one pilot signal included in the tile; and
weighting, at the communications apparatus, the tiles for channel estimation for subsequent data decoding with a low probability of interference based at least in part on the respective levels of interference, wherein assignment of respective weights is dependent on the respectively associated levels of interference, such that the higher the level of interference, the lower the associated weight and vice versa, and such that a first tile is given less weight for the channel estimation than a second tile if the first tile has a higher level of interference than the second tile. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless communications apparatus, comprising:
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at least one processor configured to determine a level of interference affecting transmission on one or more control information tiles received from a transmitting apparatus over a reserved control segment and weight the control information tiles for channel estimation for subsequent data decoding with a low probability of interference based at least in part on the level of interference, wherein the control information tiles are a portion of the reserved control segment and multiplexed over a plurality of tiles to thereby increase the probability that at least a portion of the tiles are not interfered, wherein assignment of a weight is dependent on the associated level of interference, such that the higher the level of interference, the lower the associated weight and vice versa, and such that a first control information tile is given less weight for the channel estimation than a second control information tile if the first control information tile has a higher level of interference than the second control information tile, wherein a control information tile comprises a set of tones that includes at least one pilot signal, and wherein the level of interference affecting transmission on a control information tile is determined based at least in part on interference affecting transmission of the at least one pilot signal included in the control information tile; and a memory coupled to the at least one processor. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A wireless communications apparatus that facilitates communicating control information in wireless networks, comprising:
means for determining respective levels of interference affecting respective transmissions on one or more tiles received from a transmitting apparatus over a reserved control segment that is dedicated for transmitting control information, wherein the one or more tiles are a portion of the reserved control segment and multiplexed over a plurality of tiles to thereby increase the probability that at least a portion of the tiles are not interfered, wherein a tile comprises a set of tones that includes at least one pilot signal, and wherein the respective level of interference affecting transmission on a tile is determined based at least in part on interference affecting transmission of the at least one pilot signal included in the tile; and
means for weighting the tiles for channel estimation for subsequent data decoding with a low probability of interference based at least in part on the respective levels of interference, wherein assignment of respective weights is dependent on the respectively associated levels of interference, such that the higher the level of interference, the lower the associated weight and vice versa, and such that a first tile is given less weight for the channel estimation than a second tile if the first tile has a higher level of interference than the second tile.- View Dependent Claims (18, 19, 20, 21)
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22. A computer program product, comprising:
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a non-transitory computer-readable medium comprising; code for causing at least one computer to receive control information from a transmitting apparatus, the control information being received over one or more tiles that are a portion of a reserved control segment that is dedicated for transmitting the control information and multiplexed over a plurality of tiles to thereby increase the probability that at least a portion of the tiles are not interfered, wherein a tile comprises a set of tones that includes at least one pilot signal;
code for causing the at least one computer to determine respective levels of interference affecting respective transmissions on the one or more tiles, wherein the respective level of interference affecting transmission on a tile is determined based at least in part on interference affecting transmission of the at least one pilot signal included in the tile; andcode for causing the at least one computer to weight the tiles for channel estimation for subsequent data decoding with a low probability of interference based at least in part on the respective levels of interference, wherein assignment of respective weights is dependent on the respectively associated levels of interference, such that the higher the level of interference, the lower the associated weight and vice versa, and such that a first tile is given less weight for the channel estimation than a second tile if the first tile has a higher level of interference than the second tile.
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23. A wireless communication apparatus, comprising:
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a processor configured to; determine respective levels of interference affecting respective transmissions on one or more tiles received from a transmitting apparatus over a reserved control segment that is dedicated for transmitting control information, wherein the one or more tiles are a portion of the reserved control segment, wherein a tile comprises a set of tones that includes at least one pilot signal, and wherein the respective level of interference affecting transmission on a tile is determined based at least in part on interference affecting transmission of the at least one pilot signal included in the tile; and weight the tiles for channel estimation for subsequent data decoding based at least in part on the respective levels of interference, wherein assignment of respective weights is dependent on the respectively associated levels of interference, such that the higher the level of interference, the lower the associated weight and vice versa, and such that a first tile is given less weight for the channel estimation than a second tile if the first tile has a higher level of interference than the second tile; and a memory coupled to the processor.
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Specification