Abstract
A technique of operating a wireless communication system includes determining respective geometries of multiple subscriber stations which include a first subscriber station and a second subscriber station with respect to a serving base station. Respective channel sounding bandwidths for sounding the channel between the multiple subscriber stations and the serving base station are then scheduled based on the respective geometries. The respective channel sounding bandwidths include a first channel sounding bandwidth (associated with the first subscriber station) and a second channel sounding bandwidth (associated with the second subscriber station). The first channel sounding bandwidth is greater than or equal to the second channel sounding bandwidth and the first subscriber station has a lower geometry than the second subscriber station.
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Specification Information
Specification Information
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Technologies
Resource configuration Channel Arrangement/Coding
Product
User Equipment (UE/Terminal)Base Station (eNB/gNB)
Use Cases
Wireless communication
Services
Channel Quality Measurement/Estimation
Claim
1. A method of operating a wireless communication system, comprising:
determining respective geometries of multiple subscriber stations with respect to a serving base station, the multiple subscriber stations including a first subscriber station and a second subscriber station; and
scheduling, based on the determining the respective geometries, respective channel sounding bandwidths for sounding a channel between the multiple subscriber stations and the serving base station, wherein the respective channel sounding bandwidths include a first channel sounding bandwidth associated with the first subscriber station and a second channel sounding bandwidth associated with the second subscriber station, and wherein the first channel sounding bandwidth is greater than the second channel sounding bandwidth and the first subscriber station has a lower geometry than the second subscriber station.', 'determining respective geometries of multiple subscriber stations with respect to a serving base station, the multiple subscriber stations including a first subscriber station and a second subscriber station; and', 'scheduling, based on the determining the respective geometries, respective channel sounding bandwidths for sounding a channel between the multiple subscriber stations and the serving base station, wherein the respective channel sounding bandwidths include a first channel sounding bandwidth associated with the first subscriber station and a second channel sounding bandwidth associated with the second subscriber station, and wherein the first channel sounding bandwidth is greater than the second channel sounding bandwidth and the first subscriber station has a lower geometry than the second subscriber station.
2. The method of claim 1, wherein the scheduling further comprises:
scheduling, based on the determining the respective geometries, the first subscriber station to sound an entire system bandwidth in a first sounding symbol.', 'scheduling, based on the determining the respective geometries, the first subscriber station to sound an entire system bandwidth in a first sounding symbol.
3. The method of claim 1, wherein the scheduling further comprises:
scheduling, based on the determining the respective geometries, the second subscriber station to sound less than an entire system bandwidth in a second sounding symbol.', 'scheduling, based on the determining the respective geometries, the second subscriber station to sound less than an entire system bandwidth in a second sounding symbol.
4. The method of claim 1, wherein the determining respective geometries further comprises:
determining respective carrier to interference and noise ratios for the multiple subscriber stations, wherein the respective carrier to interference and noise ratio of the first subscriber station is lower than the respective carrier to interference and noise ratio of the second subscriber station.', 'determining respective carrier to interference and noise ratios for the multiple subscriber stations, wherein the respective carrier to interference and noise ratio of the first subscriber station is lower than the respective carrier to interference and noise ratio of the second subscriber station.
5. The method of claim 1, further comprising:
assigning respective channel sounding burst schedules to the multiple subscriber stations; and
communicating, to the multiple subscriber stations, the respective channel sounding burst schedules.', 'assigning respective channel sounding burst schedules to the multiple subscriber stations; and', 'communicating, to the multiple subscriber stations, the respective channel sounding burst schedules.
6. The method of claim 5, further comprising:
receiving, from the multiple subscriber stations, respective channel sounding bursts on the channel based on the respective channel sounding burst schedules.', 'receiving, from the multiple subscriber stations, respective channel sounding bursts on the channel based on the respective channel sounding burst schedules.
7. The method of claim 6, further comprising:
characterizing, for the multiple subscriber stations, the channel based on the received respective channel sounding bursts, wherein the characterizing includes determining respective carrier to interference and noise ratios for the multiple subscriber stations.', 'characterizing, for the multiple subscriber stations, the channel based on the received respective channel sounding bursts, wherein the characterizing includes determining respective carrier to interference and noise ratios for the multiple subscriber stations.
8. The method of claim 6, wherein at least some of the multiple subscriber stations are assigned to a same portion of an uplink subframe of the channel and the receiving further comprises:
receiving, from each of the multiple subscriber stations that are assigned to the same portion of the uplink subframe, respective orthogonal channel sounding symbols, included within the respective channel sounding bursts, based on the respective channel sounding burst schedules.', 'receiving, from each of the multiple subscriber stations that are assigned to the same portion of the uplink subframe, respective orthogonal channel sounding symbols, included within the respective channel sounding bursts, based on the respective channel sounding burst schedules.
9. The method of claim 1, further comprising:
performing data demodulation based on received respective channel sounding bursts and received respective demodulation reference signals associated with the multiple subscriber stations.', 'performing data demodulation based on received respective channel sounding bursts and received respective demodulation reference signals associated with the multiple subscriber stations
10. The method of claim 1, further comprising:
receiving, from the first subscriber station, a first channel sounding burst transmitted at a scaled target transmit power spectral density level over the first channel sounding bandwidth, wherein the scaled target transmit power spectral density level is based on a power control target that specifies a target transmit power spectral density level for a target channel sounding burst that has an associated first bandwidth, and wherein the scaled target transmit power spectral density level is based on a relationship of the first bandwidth to the first channel sounding bandwidth.', 'receiving, from the first subscriber station, a first channel sounding burst transmitted at a scaled target transmit power spectral density level over the first channel sounding bandwidth, wherein the scaled target transmit power spectral density level is based on a power control target that specifies a target transmit power spectral density level for a target channel sounding burst that has an associated first bandwidth, and wherein the scaled target transmit power spectral density level is based on a relationship of the first bandwidth to the first channel sounding bandwidth
11. A wireless communication system, comprising:
a base station configured to determine respective geometries of multiple subscriber stations with respect to the base station; and
a scheduler configured to set respective channel sounding bandwidths for sounding a channel between the multiple subscriber stations and the base station based on the respective geometries of the multiple subscriber stations, wherein the respective channel sounding bandwidths of lower geometry subscriber stations, included within the multiple subscriber stations, are greater than the respective channel sounding bandwidths of higher geometry subscriber stations, included within the multiple subscriber stations.', 'a base station configured to determine respective geometries of multiple subscriber stations with respect to the base station; and', 'a scheduler configured to set respective channel sounding bandwidths for sounding a channel between the multiple subscriber stations and the base station based on the respective geometries of the multiple subscriber stations, wherein the respective channel sounding bandwidths of lower geometry subscriber stations, included within the multiple subscriber stations, are greater than the respective channel sounding bandwidths of higher geometry subscriber stations, included within the multiple subscriber stations.12. The wireless communication system of claim 11, wherein the multiple subscriber stations are each configured to:
receive a power control target that specifies a target transmit power spectral density level for transmitting a target channel sounding burst having an associated first bandwidth;
scale the target transmit power spectral density level based on a relationship of the first bandwidth to the respective channel sounding bandwidths for respective channel sounding bursts; and
transmit the respective channel sounding bursts at the scaled target transmit power spectral density level, wherein the respective channel sounding bursts are code division multiplexed signals.', 'receive a power control target that specifies a target transmit power spectral density level for transmitting a target channel sounding burst having an associated first bandwidth;', 'scale the target transmit power spectral density level based on a relationship of the first bandwidth to the respective channel sounding bandwidths for respective channel sounding bursts; and', 'transmit the respective channel sounding bursts at the scaled target transmit power spectral density level, wherein the respective channel sounding bursts are code division multiplexed signals.13. The wireless communication system of claim 11, wherein the base station is further configured to:
receive respective channel sounding bursts from the multiple subscriber stations on the channel; and
characterize, for the multiple subscriber stations, the channel based on the received respective channel sounding bursts.', 'receive respective channel sounding bursts from the multiple subscriber stations on the channel; and', 'characterize, for the multiple subscriber stations, the channel based on the received respective channel sounding bursts.14. The wireless communication system of claim 13, wherein the base station is further configured to perform data demodulation based on the received respective channel sounding bursts and received respective demodulation reference signals associated with the multiple subscriber stations.15. A method of operating a wireless communication system, comprising:
determining respective geometries of multiple subscriber stations with respect to a serving base station, the multiple subscriber stations including a first subscriber station and a second subscriber station; and
scheduling, based on the determining the respective geometries, respective channel sounding bandwidths for sounding a channel between the multiple subscriber stations and the serving base station, wherein the respective channel sounding bandwidths include a first channel sounding bandwidth associated with the first subscriber station and a second channel sounding bandwidth associated with the second subscriber station, and wherein the first channel sounding bandwidth is greater than the second channel sounding bandwidth and the first subscriber station has a lower geometry than the second subscriber station, where the determining respective geometries further comprises determining respective carrier to interference and noise ratios for the multiple subscriber stations, and where the respective carrier to interference and noise ratio of the first subscriber station is lower than the respective carrier to interference and noise ratio of the second subscriber station.', 'determining respective geometries of multiple subscriber stations with respect to a serving base station, the multiple subscriber stations including a first subscriber station and a second subscriber station; and', 'scheduling, based on the determining the respective geometries, respective channel sounding bandwidths for sounding a channel between the multiple subscriber stations and the serving base station, wherein the respective channel sounding bandwidths include a first channel sounding bandwidth associated with the first subscriber station and a second channel sounding bandwidth associated with the second subscriber station, and wherein the first channel sounding bandwidth is greater than the second channel sounding bandwidth and the first subscriber station has a lower geometry than the second subscriber station, where the determining respective geometries further comprises determining respective carrier to interference and noise ratios for the multiple subscriber stations, and where the respective carrier to interference and noise ratio of the first subscriber station is lower than the respective carrier to interference and noise ratio of the second subscriber station.16. The method of claim 15, wherein the scheduling further comprises:
scheduling, based on the determining the respective geometries, the first subscriber station to sound an entire system bandwidth in a first sounding symbol; and
scheduling, based on the determining the respective geometries, the second subscriber station to sound less than the entire system bandwidth in a second sounding symbol.', 'scheduling, based on the determining the respective geometries, the first subscriber station to sound an entire system bandwidth in a first sounding symbol; and', 'scheduling, based on the determining the respective geometries, the second subscriber station to sound less than the entire system bandwidth in a second sounding symbol.17. The method of claim 15, further comprising:
assigning respective channel sounding burst schedules to the multiple subscriber stations;
communicating, to the multiple subscriber stations, the respective channel sounding burst schedules; and
receiving, from the multiple subscriber stations, respective channel sounding bursts on the channel based on the respective channel sounding burst schedules.', 'assigning respective channel sounding burst schedules to the multiple subscriber stations;', 'communicating, to the multiple subscriber stations, the respective channel sounding burst schedules; and', 'receiving, from the multiple subscriber stations, respective channel sounding bursts on the channel based on the respective channel sounding burst schedules.18. The method of claim 17, further comprising:
characterizing, for the multiple subscriber stations, the channel based on the received respective channel sounding bursts, wherein the characterizing includes determining respective carrier to interference and noise ratios for the multiple subscriber stations.', 'characterizing, for the multiple subscriber stations, the channel based on the received respective channel sounding bursts, wherein the characterizing includes determining respective carrier to interference and noise ratios for the multiple subscriber stations.']
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ClaimChart-US7881721B2-STO
Patent number:US7881721B2
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