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US 11,057,095 B2Granted
Low-overhead high-rank codebook
AssigneeNokia Technologies Oy
InventorsFrederick Vook, William Hillery, Mihai Enescu, Eugene Visotsky, Xiaomao Mao, Nitin Mangalvedhe
Life of this patent
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Abstract
Various communication system may benefit from the appropriate selection of communication parameters. For example, certain wireless communication systems may benefit from the user of a low-overhead high-rank codebook. A method can include determining a first partition of a precoding matrix with a higher resolution and a second partition of the precoding matrix with a lower resolution. The method can also include feeding back the first partition and the second partition.
Claims20
An apparatus comprising:
- at least one processor;
- and
- at least one memory including computer program code;
- the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
- determine a first partition of a precoding matrix with a higher resolution and a second partition of the precoding matrix with a lower resolution;
- and,
- feed back an index of the precoding matrix to a base station, wherein
- the precoding matrix including the first partition and the second partition indicates codeword to layer mapping.
5 more elements
A method comprising:
- determining, at a user equipment, a first partition of a precoding matrix with a higher resolution and a second partition of the precoding matrix with a lower resolution;
- and,
- feeding back an index of the precoding matrix to a base station, wherein
- the precoding matrix including the first partition and the second partition indicates codeword to layer mapping.
1 more element
An apparatus comprising:
- at least one processor;
- and
- at least one memory including computer program code;
- the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
- receive, from a user equipment, as feedback, an index of a precoding matrix, wherein the precoding matrix comprises a first partition of the precoding matrix with a higher resolution and a second partition of the precoding matrix with a lower resolution, and the precoding matrix indicates codeword to layer mapping;
- and,
- communicate with the user equipment based on the received index.
4 more elements
Dependencies are inferred from the claim text.