Systems and methods for reduced overhead in wireless communication systems
First Claim
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1. A method of wireless communication, comprising:
- determining, based on a channel condition for at least one channel between a user equipment (UE) and a base station, if a reference signal (RS) frequency-domain bundling pattern providing reduced RS presence is to be used for the at least one channel, wherein the RS frequency-domain bundling pattern comprises a bundle of two or more resource blocks spanning a frequency domain, wherein RS presence is omitted from at least a first resource block of the bundle of two or more resource blocks and RS presence is included in at least a second resource block of the bundle of two or more resource blocks, and wherein the second resource block is selected to have the RS presence based on a proximity of the second resource block to other resource blocks in the bundle of two or more resource blocks; and
communicating using the at least one channel based on the RS frequency-domain bundling pattern with reduced RS presence.
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Abstract
Systems and methods are disclosed which implement one or more overhead reduction technique, if channel conditions favorable to implementation of overhead reduction are present. The one or more overhead reduction technique may have one or more restriction corresponding to the channel for which the overhead reduction technique is implemented. The one or more overhead reduction technique implemented may include time-domain bundling, frequency-domain bundling, and pattern adaptation. Pattern adaptation may include pattern code-domain reduction, pattern timing-domain reduction, and pattern frequency-domain reduction.
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Citations
71 Claims
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1. A method of wireless communication, comprising:
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determining, based on a channel condition for at least one channel between a user equipment (UE) and a base station, if a reference signal (RS) frequency-domain bundling pattern providing reduced RS presence is to be used for the at least one channel, wherein the RS frequency-domain bundling pattern comprises a bundle of two or more resource blocks spanning a frequency domain, wherein RS presence is omitted from at least a first resource block of the bundle of two or more resource blocks and RS presence is included in at least a second resource block of the bundle of two or more resource blocks, and wherein the second resource block is selected to have the RS presence based on a proximity of the second resource block to other resource blocks in the bundle of two or more resource blocks; and communicating using the at least one channel based on the RS frequency-domain bundling pattern with reduced RS presence. - 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. A method of wireless communication, comprising:
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determining, based on a channel condition for at least one channel between a user equipment (UE) and a base station, if a first reference signal (RS) pattern with a first spreading factor is to be used, or a RS code-domain reduction pattern providing reduced RS presence with a second spreading factor higher than the first spreading factor is to be used for the at least one channel, wherein at least one of the first RS pattern or the RS code-domain reduction pattern comprises a bundle of two or more resource blocks spanning a frequency domain, wherein RS presence is omitted from at least a first resource block of the bundle of two or more resource blocks and RS presence is included in at least a second resource block of the bundle of two or more resource blocks, and wherein the second resource block is selected to have the RS presence based on a proximity of the second resource block to other resource blocks in the bundle of two or more resource blocks; and communicating using the at least one channel based on the determined first RS pattern or the determined RS code-domain reduction pattern with reduced RS presence. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A non-transitory computer-readable medium having program code recorded thereon, comprising:
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program code to determine, based on a channel condition for at least one channel between a user equipment (UE) and a base station, if a first reference signal (RS) pattern with a first spreading factor is to be used, or a RS code-domain reduction pattern providing reduced RS presence with a second spreading factor higher than the first spreading factor is to be used for the at least one channel, wherein at least one of the first RS pattern or the RS code-domain reduction pattern comprises a bundle of two or more resource blocks spanning a frequency domain, wherein RS presence is omitted from at least a first resource block of the bundle of two or more resource blocks and RS presence is included in at least a second resource block of the bundle of two or more resource blocks, and wherein the second resource block is selected to have the RS presence based on a proximity of the second resource block to other resource blocks in the bundle of two or more resource blocks; and program code to communicate using the at least one channel based on the determined first RS pattern or the determined RS code-domain reduction pattern with reduced RS presence.
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47. A non-transitory computer-readable medium having program code recorded thereon, comprising:
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program code to determine, based on a channel condition for at least one channel between a user equipment (UE) and a base station, if a reference signal (RS) frequency-domain bundling pattern providing reduced RS presence is to be used for the at least one channel, wherein the RS frequency-domain bundling pattern comprises a bundle of two or more resource blocks spanning a frequency domain, wherein RS presence is omitted from at least a first resource block of the bundle of two or more resource blocks and RS presence is included in at least a second resource block of the bundle of two or more resource blocks, and wherein the second resource block is selected to have the RS presence based on a proximity of the second resource block to other resource blocks in the bundle of two or more resource blocks; and program code to communicate using the at least one channel based on the RS frequency-domain bundling pattern with reduced RS presence.
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48. An apparatus configured for wireless communication, comprising:
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means for determining, based on a channel condition for at least one channel between a user equipment (UE) and a base station, if a first reference signal (RS) pattern with a first spreading factor is to be used, or a RS code-domain reduction pattern providing reduced RS presence with a second spreading factor higher than the first spreading factor is to be used for the at least one channel, wherein at least one of the first RS pattern or the RS code-domain reduction pattern comprises a bundle of two or more resource blocks spanning a frequency domain, wherein RS presence is omitted from at least a first resource block of the bundle of two or more resource blocks and RS presence is included in at least a second resource block of the bundle of two or more resource blocks, and wherein the second resource block is selected to have the RS presence based on a proximity of the second resource block to other resource blocks in the bundle of two or more resource blocks; and means for communicating using the at least one channel based on determined first RS pattern or the determined the RS code-domain reduction pattern with reduced RS presence.
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49. An apparatus configured for wireless communication, comprising:
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means for determining, based on a channel condition for at least one channel between a user equipment (UE) and a base station, if a reference signal (RS) frequency-domain bundling pattern providing reduced RS presence is to be used for the at least one channel, wherein the RS frequency-domain bundling pattern comprises a bundle of two or more resource blocks spanning a frequency domain, wherein RS presence is omitted from at least a first resource block of the bundle of two or more resource blocks and RS presence is included in at least a second resource block of the bundle of two or more resource blocks, and wherein the second resource block is selected to have the RS presence based on a proximity of the second resource block to other resource blocks in the bundle of two or more resource blocks; and means for communicating using the at least one channel based on the RS frequency-domain bundling pattern with reduced RS presence.
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50. An apparatus configured for wireless communication, the apparatus comprising:
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at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor is configured; to determine, based on a channel condition for at least one channel between a user equipment (UE) and a base station, if a reference signal (RS) frequency-domain bundling pattern providing reduced RS presence is to be used for the at least one channel, wherein the RS frequency-domain bundling pattern comprises a bundle of two or more resource blocks spanning a frequency domain, wherein RS presence is omitted from at least a first resource block of the bundle of two or more resource blocks and RS presence is included in at least a second resource block of the bundle of two or more resource blocks, and wherein the second resource block is selected to have the RS presence based on a proximity of the second resource block to other resource blocks in the bundle of two or more resource blocks; and to communicate using the at least one channel based on a RS frequency-domain bundling pattern with reduced RS presence. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. An apparatus configured for wireless communication, the apparatus comprising:
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at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor is configured; to determine, based on a channel condition for at least one channel between a user equipment (UE) and a base station, if a first reference signal (RS) pattern with a first spreading factor is to be used, or a RS code-domain reduction pattern providing reduced RS presence with a second spreading factor higher than the first spreading factor is to be used for the at least one channel, wherein at least one of the first RS pattern or the RS code-domain reduction pattern comprises a bundle of two or more resource blocks spanning a frequency domain, wherein RS presence is omitted from at least a first resource block of the bundle of two or more resource blocks and RS presence is included in at least a second resource block of the bundle of two or more resource blocks, and wherein the second resource block is selected to have the RS presence based on a proximity of the second resource block to other resource blocks in the bundle of two or more resource blocks; and to communicate using the at least one channel based on the determined first RS pattern or the determined RS code-domain reduction pattern with reduced RS presence.
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Specification