Channel rank updates in multiple-input multiple-output communication systems
AssigneeApple Inc.
InventorJayesh Kotecha
Life of this patent
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Abstract
Embodiments of the disclosure provide a system and method for providing channel feedback information (CFI) from a user equipment device to a base station. CFI is transmitted from the user equipment device on first and second communication channels. The user equipment device is operable to measure the channel rank of a downlink channel and to select a preferred channel rank that is used to configure the CFI that is transmitted to the base station. The base station is operable to use the preferred channel rank to interpret the CFI transmitted by the user end device.
Claims19
A method, comprising:
- receiving, by a base station via a first communication channel, a periodic channel feedback information (CFI) report that is generated based on a first measured rank;
- receiving, by the base station via a second communication channel, an aperiodic CFI report that is generated based on a second measured rank;
- selecting one of the first measured rank or the second measured rank based on respective values of the first and second measured ranks;
- and
- processing one or more subsequent CFI reports based on the selected rank.
An apparatus, comprising:
- one or more processors configured to:
- receive, via a first communication channel, a periodic channel feedback information (CFI) report that is generated based on a first measured rank;
- receive, via a second communication channel, an aperiodic CFI report that is generated based on a second measured rank;
- select, one of the first measured rank or the second measured rank based on respective values of the first and second measured ranks;
- and
- process one or more subsequent CFI reports based on the selected rank.
A non-transitory computer-readable medium having instructions stored thereon that are executable by a computing device to perform operations comprising:
- receiving, via a first communication channel, a periodic channel feedback information (CFI) report that is generated based on a first measured rank;
- receiving, via a second communication channel, an aperiodic CFI report that is generated based on a second measured rank;
- selecting one of the first measured rank or the second measured rank based on respective values of the first and second measured ranks;
- and
- processing one or more subsequent CFI reports based on the selected rank.
Dependencies are inferred from the claim text.