Frequency-Hopping Method for LTE Aperiodic Sounding Reference Signals
First Claim
1. A method for operating an enhanced node B (eNB) in a wireless communication network, the method comprising:
- configuring, by the eNB, a plurality of aperiodic sounding reference signaling configurations, each of said aperiodic sounding reference signaling configurations containing at least one parameter that indicates one of a plurality of aperiodic frequency hopping patterns; and
indicating, by the eNB, one of the plurality of aperiodic sounding reference signaling configurations to a user equipment (UE) in the network such that the UE uses the aperiodic sounding reference signaling configuration and its associated aperiodic frequency hopping pattern within a sounding reference signal (SRS) subframe.
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Abstract
Methods and apparatus are provided to enable aperiodic sounding reference signaling including frequency hopping through the use of additional RRC configuration. The methods can require little or no additional L1 overhead to support narrowband frequency hopping for aperiodic sounding transmissions. In some embodiments, an approach is provided for extending an LTE periodic sounding reference signal methodology to include aperiodic sounding. One benefit of the proposed technique is that it enables each UE to perform aperiodic channel sounding in sounding subframes, using a frequency-hopping pattern, in which the sounding bandwidth of the UE can be narrowed appropriately to match its link capability. Additional benefits of the new approach include better resource utilization, lower signaling overhead, faster channel information update rates, and lower blocking probabilities.
57 Citations
36 Claims
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1. A method for operating an enhanced node B (eNB) in a wireless communication network, the method comprising:
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configuring, by the eNB, a plurality of aperiodic sounding reference signaling configurations, each of said aperiodic sounding reference signaling configurations containing at least one parameter that indicates one of a plurality of aperiodic frequency hopping patterns; and indicating, by the eNB, one of the plurality of aperiodic sounding reference signaling configurations to a user equipment (UE) in the network such that the UE uses the aperiodic sounding reference signaling configuration and its associated aperiodic frequency hopping pattern within a sounding reference signal (SRS) subframe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for operating a user equipment (UE) in a wireless communication network, the method comprising:
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receiving, by the UE, an indication of one of a plurality of aperiodic sounding reference signaling configurations configured by an enhanced node B (eNB) in the network, each of said aperiodic sounding reference signaling configurations containing at least one parameter that indicates one of a plurality of aperiodic frequency hopping patterns; and transmitting, by the UE, an aperiodic sounding reference signaling within a sounding reference signal (SRS) subframe, using the one of the plurality of aperiodic sounding reference signaling configurations and its associated aperiodic frequency hopping pattern. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An access device for use in a wireless communication network, the access device comprising:
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a processor configured such that the access device configures a plurality of aperiodic sounding reference signaling configurations, each of said aperiodic sounding reference signaling configurations containing at least one parameter that indicates one of a plurality of aperiodic frequency hopping patterns, wherein the access device is configured to indicate one of the plurality of aperiodic sounding reference signaling configurations to a user equipment (UE) in the network such that the UE uses the aperiodic sounding reference signaling configuration and its associated aperiodic frequency hopping pattern within a sounding reference signal (SRS) subframe.
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19-27. -27. (canceled)
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28. A user equipment (UE) for use in a wireless communication network, the UE comprising:
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a processor configured such that the UE receives an indication of one of a plurality of aperiodic sounding reference signaling configurations configured by an enhanced node B (eNB) in the network, two or more of said aperiodic sounding reference signaling configurations containing at least one parameter that indicates one of a plurality of aperiodic frequency hopping patterns, wherein the UE is configured to transmit an aperiodic sounding reference signaling within a sounding reference signal (SRS) subframe, using the one of the plurality of aperiodic sounding reference signaling configurations and its associated aperiodic frequency hopping pattern.
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29-34. -34. (canceled)
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35. A method for operating a wireless communication network, the method comprising:
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configuring, by an enhanced node B (eNB) in the network, a plurality of aperiodic frequency hopping patterns; and indicating, by the eNB, one of the plurality of aperiodic frequency hopping patterns to a user equipment (UE) in the network such that the UE uses the resources associated with said frequency hopping pattern within a sounding reference signal (SRS) subframe.
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36-46. -46. (canceled)
Specification