Multi-resolution CSI feedback
First Claim
1. A method performed by a radio device for Channel State Information, CSI, feedback in a communication system comprising a Radio Access Network, RAN, node, the method comprising:
- receiving, from the RAN node, information about a Channel State Information Reference Signal, CSI-RS, resource, a first CSI type and a second CSI type for feedback;
receiving, from the RAN node, a CSI feedback request for CSI measurement and feedback of the first CSI type or the second CSI type;
measuring CSI of the indicated type based on signals received in the CSI-RS resource; and
sending, to the RAN node, a CSI report of the requested CSI type.
1 Assignment
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Accused Products
Abstract
A method performed by a radio device 6 for Channel State Information (CSI) feedback in a communication system 1 comprising a Radio Access Network (RAN) node 3 comprises receiving, from the RAN node, information about a CSI Reference Signal (RS) resource, a first CSI type and a second CSI type for feedback. The method also comprises receiving, from the RAN node, a CSI feedback request for CSI measurement and feedback of the first CSI type or the second CSI type. The method also comprises measuring CSI of the indicated type based on signals received on the CSI-RS resource. The method also comprises sending, to the RAN node, a CSI report of the requested CSI type. A corresponding method in a RAN node is furthermore presented herein.
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Citations
28 Claims
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1. A method performed by a radio device for Channel State Information, CSI, feedback in a communication system comprising a Radio Access Network, RAN, node, the method comprising:
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receiving, from the RAN node, information about a Channel State Information Reference Signal, CSI-RS, resource, a first CSI type and a second CSI type for feedback; receiving, from the RAN node, a CSI feedback request for CSI measurement and feedback of the first CSI type or the second CSI type; measuring CSI of the indicated type based on signals received in the CSI-RS resource; and sending, to the RAN node, a CSI report of the requested CSI type. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method performed by a Radio Access Network, RAN, node, equipped with multiple transmit antenna ports for transmitting data to a radio device in a communication system and for receiving for Channel State Information, CSI, feedback from the radio device, the method comprising
sending, to the radio device, information about a CSI Reference Signal, CSI-RS, resource, a first CSI type and a second CSI type for feedback; -
sending, to the radio device, a CSI feedback request for CSI measurement and feedback of the first CSI type or the second CSI type; transmitting at least one CSI-RS signal in the CSI-RS resource; and receiving, from the radio device, a CSI report of the requested CSI type. - View Dependent Claims (26)
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27. A radio device for Channel State Information, CSI, feedback in a communication system comprising a Radio Access Network, RAN, node, the radio device comprising:
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processor circuitry; and storage storing instructions executable by said processor circuitry whereby said radio device is operative to; receive, from the RAN node, information about a Channel State Information Reference Signal, CSI-RS, resource, a first CSI type and a second CSI type for feedback; receive, from the RAN node, a CSI feedback request for CSI measurement and feedback of the first CSI type or the second CSI type; measure CSI of the indicated type based on signals received in the CSI-RS resource; and send, to the RAN node, a CSI report of the requested CSI type.
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28. A Radio Access Network, RAN, node for Channel State Information, CSI, feedback in a communication system comprising the RAN node equipped with multiple transmit antenna ports for transmitting data to a radio device, the RAN node comprising:
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processor circuitry; and storage storing instructions executable by said processor circuitry whereby said RAN node is operative to; send, to the radio device, information about a Channel State Information Reference Signal, CSI-RS, resource, a first CSI type and a second CSI type for feedback; send, to the radio device, a CSI feedback request for CSI measurement and feedback of the first CSI type or the second CSI type; transmit at least one CSI-RS signal in the CSI-RS resource; and receive, from the radio device, a CSI report of the requested CSI type.
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Specification