Invention Grant
- Patent Title: Channel rank updates in multiple-input multiple-output communication systems
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Application No.: US14830917Application Date: 2015-08-20
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Publication No.: US09723615B2Publication Date: 2017-08-01
- Inventor: Jayesh H. Kotecha
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Main IPC: H04L1/00
- IPC: H04L1/00 ; H04W72/06 ; H04B7/06 ; H04W72/04 ; H04W24/10

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.
Public/Granted literature
- US20160050673A1 Channel Rank Updates in Multiple-Input Multiple-Output Communication Systems Public/Granted day:2016-02-18
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