EFFICIENT UPLINK RESOURCE INDICATION FOR CSI FEEDBACK
First Claim
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1. A method of wireless communication, comprising:
- receiving a downlink grant at a mobile device;
detecting, by the mobile device, a channel state information (CSI) trigger in the downlink grant; and
transmitting CSI feedback by the mobile device in response to the CSI trigger.
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Abstract
Channel state information (CSI) feedback reporting is disclosed for multi-cell downlink cooperation networks. In such networks, when a user equipment (UE) has little uplink data traffic, CSI feedback is triggered by the serving base station through a downlink grant to the UE. The UE detects the CSI feedback trigger placed by the base station in the downlink grant and selects a set of uplink resources based, at least in part, on the downlink grant.
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Citations
30 Claims
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1. A method of wireless communication, comprising:
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receiving a downlink grant at a mobile device; detecting, by the mobile device, a channel state information (CSI) trigger in the downlink grant; and transmitting CSI feedback by the mobile device in response to the CSI trigger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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11. The method of claim 11, further including:
dropping any periodic CSI in the other uplink signals.
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13. An apparatus configured for wireless communication, comprising:
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means for receiving a downlink grant at a mobile device; means for detecting, by the mobile device, a channel state information (CSI) trigger in the downlink grant; and means for transmitting CSI feedback by the mobile device in response to the CSI trigger. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A computer program product comprising:
a non-transitory computer-readable medium having program code recorded thereon, the program code, when executed by a computer, causing the computer to; receive a downlink grant at a mobile device; detect, by the mobile device, a channel state information (CSI) trigger in the downlink grant; and transmit CSI feedback by the mobile device in response to the CSI trigger. - View Dependent Claims (26, 27)
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28. An apparatus configured for wireless communication, comprising:
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at least one processor; and a memory coupled to said at least one processor, wherein the at least one processor is configured to; receive a downlink grant at a mobile device; detect, by the mobile device, a channel state information (CSI) trigger in the downlink grant; and transmit CSI feedback by the mobile device in response to the CSI trigger. - View Dependent Claims (29, 30)
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Specification