System and method for channel state information feedback in wireless communications systems
AssigneeFuturewei Technologies, Inc.
InventorsJianguo Wang, Yang Tang, Yongxing Zhou, David Jean-Marie Mazzarese, Mattias Frenne
Life of this patent
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Abstract
A system and method for channel state information feedback in wireless communications systems are provided. A method for reporting channel information includes determining, at a user equipment, a channel information type for first channel information to be reported to a communications controller, determining the first channel information conditioned on previously reported channel information and on the channel information type, and reporting the first channel information, the channel information type, or a combination thereof, to the communications controller.
Claims32
A method for reporting channel information, the method comprising:
- determining, by a user equipment, a precoding type indication (PTI) for first channel information to be reported to a communications controller of a wireless communications system;
- determining, by the user equipment, the first channel information conditioned on second channel information comprising a last reported rank indicator and a first precoding matrix indicator, and on the PTI;
- and
- reporting, by the user equipment to the communications controller, the first channel information in a subframe of the wireless communications system.
A user equipment comprising:
- a processor configured to determine a precoding type indication (PTI) for first channel information to be reported to a communications controller of a wireless communications system, and to determine the first channel information conditioned on second channel information comprising a last reported rank indicator and a first precoding matrix indicator, and on the PTI;
- and
- a transmitter coupled to the processor, the transmitter configured to report the first channel information in a subframe of the wireless communications system.
A communications system comprising:
- a user equipment comprising:
- a wireless interface communicatively coupled to a communications controller;
- and
- a processor configured to determine a precoding type indication (PTI) for first channel information to be reported to the communication controller, to determine the first channel information conditioned on second channel information comprising a last reported rank indicator and a first precoding matrix indicator, and on the PTI, and to report the first channel information in a subframe to the communications controller.
Dependencies are inferred from the claim text.