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US 9,853,788 B2Granted
Apparatus and methods for wireless channel sounding
AssigneeApple Inc.
InventorJames McCoy
Life of this patent
Estimating the term…
Abstract
A technique of operating a wireless communication device includes receiving an assigned starting point index and an assigned reference signal bandwidth for a reference signal. The reference signal is then transmitted multiple times, beginning at an initial resource block that is associated with the assigned starting point index and in accordance with the assigned reference signal bandwidth, across a shared channel.
Claims20
An apparatus, comprising:
- a memory;
- and
- a processor in communication with the memory, wherein the processor is configured to:
- receive a configuration for sounding reference signal transmissions comprising a plurality of sounding reference signal bandwidths within a physical uplink shared channel, wherein the physical uplink shared channel is less than a total uplink bandwidth;
- receive at a first time, when channel sounding is warranted and after receiving the configuration, an indication of a first assigned starting point index and a first assigned sounding reference signal bandwidth selected from the plurality of sounding reference signal bandwidths;
- determine a first resource block associated with the first assigned starting point index;
- transmit a sounding reference signal according to the first assigned starting point index and the first selected sounding reference signal bandwidth;
- receive at a second time, when channel sounding is warranted and after the first time, an indication of a second assigned starting point index and a second assigned sounding reference signal bandwidth selected from the plurality of sounding reference signal bandwidths;
- determine a second resource block associated with the second assigned starting point index;
- and
- transmit a sounding reference signal according to the second assigned starting point index and the second selected sounding reference signal bandwidth.
8 more elements
A non-transitory computer readable memory medium storing program instructions executable by a processor of a wireless device to:
- receive a configuration for sounding reference signal transmissions comprising a plurality of sounding reference signal bandwidths within a physical uplink shared channel, wherein the physical uplink shared channel is less than a total uplink bandwidth;
- receive at a first time, when channel sounding is warranted and after receiving the configuration, an indication of a first assigned starting point index and a first assigned sounding reference signal bandwidth selected from the plurality of sounding reference signal bandwidths;
- determine a first resource block associated with the first assigned starting point index;
- generate instructions to transmit a sounding reference signal according to the first assigned starting point index and the first selected sounding reference signal bandwidth;
- receive at a second time, when channel sounding is warranted and after the first time, an indication of a second assigned starting point index and a second assigned sounding reference signal bandwidth selected from the plurality of sounding reference signal bandwidths;
- determine a second resource block associated with the second assigned starting point index;
- and
- generate instructions to transmit a sounding reference signal according to the second assigned starting point index and the second selected sounding reference signal bandwidth.
5 more elements
A wireless device, comprising:
- a processor;
- and
- a transceiver coupled to the processor;
- wherein the processor and transceiver are configured to receive and/or transmit voice and/or data and control signals, and wherein the processor and transceiver are configured to:
- receive a configuration for sounding reference signal transmissions comprising a plurality of sounding reference signal bandwidths within a physical uplink shared channel, wherein the physical uplink shared channel is less than a total uplink bandwidth;
- receive at a first time, when channel sounding is warranted and after receiving the configuration, an indication of a first assigned starting point index and a first assigned sounding reference signal bandwidth selected from the plurality of sounding reference signal bandwidths;
- determine a first resource block associated with the first assigned starting point index;
- transmit a sounding reference signal according to the first assigned starting point index and the first selected sounding reference signal bandwidth;
- receive at a second time, when channel sounding is warranted and after the first time, an indication of a second assigned starting point index and a second assigned sounding reference signal bandwidth selected from the plurality of sounding reference signal bandwidths;
- determine a second resource block associated with the second assigned starting point index;
- and
- transmit a sounding reference signal according to the second assigned starting point index and the second selected sounding reference signal bandwidth.
9 more elements
Dependencies are inferred from the claim text.