Abstract
PROBLEM TO BE SOLVED: To provide a channel information feedback method using a code book, an apparatus, and a system.SOLUTION: A terminal in a communication system measures a parameter of a downlink channel between the terminal and a base station of the communication system (203), selects a plurality of precoding matrices, usable for both a single user multi-input multi-output transmission method and a multi-user multi-input multi-output transmission method, from a precoding code book using the downlink channel parameter (205), and feeds back first information indicative of the plurality of precoding matrices to the base station (207). The precoding code book is an aggregation of the precoding matrices.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 4G | 22/04/2014 | ISLD-201404-004 | SONY CORP | No | Family Member | ||||
| 4G | 29/07/2021 | ISLD-202106-034 | SONY CORP | No | Family Member | ||||
| 5G | 29/07/2021 | ISLD-202106-034 | SONY CORP | No | Family Member | ||||
Specification Information
Specification Information
Technologies
Family Information
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
| EP2536058A1 | 4G | 22/04/2014 | ISLD-201404-004 | SONY CORP | Yes | Basis Patent | ||||
| EP2536058A1 | 4G | 29/07/2021 | ISLD-202106-034 | SONY CORP | Yes | Basis Patent | ||||
| EP2536058A1 | 5G | 29/07/2021 | ISLD-202106-034 | SONY CORP | Yes | Basis Patent | ||||
| EP2536058A4 | 4G | 22/04/2014 | ISLD-201404-004 | SONY CORP | Yes | Basis Patent | ||||
| EP2536058A4 | 4G | 29/07/2021 | ISLD-202106-034 | SONY CORP | Yes | Basis Patent | ||||
| EP2536058A4 | 5G | 29/07/2021 | ISLD-202106-034 | SONY CORP | Yes | Basis Patent | ||||
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| CN102158263B | 4G | 29/07/2021 | ISLD-202106-034 | SONY CORP | No | Family Member | ||||
| CN102158263B | 5G | 29/07/2021 | ISLD-202106-034 | SONY CORP | No | Family Member | ||||
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| EP2536058B1 | 4G | 22/04/2014 | ISLD-201404-004 | SONY CORP | Yes | Basis Patent | ||||
| EP2536058B1 | 4G | 29/07/2021 | ISLD-202106-034 | SONY CORP | Yes | Basis Patent | ||||
| EP2536058B1 | 5G | 29/07/2021 | ISLD-202106-034 | SONY CORP | Yes | Basis Patent | ||||
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Technologies
Multiple-Input Multiple-Output(MIMO)/Massive MIMO Feedback
Product
Use Cases
Wireless communication
Services
Claim
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SUMMARY
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