Channel state information framework design for 5G multiple input multiple output transmissions
First Claim
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1. A network node device, comprising:
- a processor; and
a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising;
based on a signal received from a user equipment indicating that the user equipment has decomposed a multiple input multiple output channel into multiple domains comprising at least an H domain and a V domain related to a co-variance between correlated antenna elements, and a U domain related to a co-phasing between multiple antenna sub-groups, configuring channel state information reference signal resources for the user equipment to measure the multiple domains;
transmitting a message to the user equipment indicating the channel state information reference signal resources for the user equipment to facilitate measurement of the multiple domains, wherein the message comprises a group of feedback formats;
transmitting a channel state information reference signal using the channel state information reference signal resources configured for the multiple domains;
receiving feedback from the user equipment, wherein the feedback comprises a feedback format selected from the group of feedback formats; and
based on a decoding of the feedback, determining a transmission parameter comprising a transmission protocol for transmissions between the network node device and the user equipment.
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Abstract
A user equipment can be configured to decompose a multiple input multiple output (MIMO) channel into multiple domains, measure the channel state information reference signal (CSI-RS) for each domain, and select a feedback format for transmission to network node based on the measurements. The network node can use the feedback to determine transmission parameters to be transmitted to the user equipment.
186 Citations
20 Claims
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1. A network node device, comprising:
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a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising; based on a signal received from a user equipment indicating that the user equipment has decomposed a multiple input multiple output channel into multiple domains comprising at least an H domain and a V domain related to a co-variance between correlated antenna elements, and a U domain related to a co-phasing between multiple antenna sub-groups, configuring channel state information reference signal resources for the user equipment to measure the multiple domains; transmitting a message to the user equipment indicating the channel state information reference signal resources for the user equipment to facilitate measurement of the multiple domains, wherein the message comprises a group of feedback formats; transmitting a channel state information reference signal using the channel state information reference signal resources configured for the multiple domains; receiving feedback from the user equipment, wherein the feedback comprises a feedback format selected from the group of feedback formats; and based on a decoding of the feedback, determining a transmission parameter comprising a transmission protocol for transmissions between the network node device and the user equipment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 17)
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8. A user equipment, comprising:
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a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising; decomposing a multiple input multiple output channel into multiple domains; transmitting a message to a network node device indicating that the user equipment has decomposed the multiple input multiple output channel into the multiple domains; measuring a channel state information reference signal for the multiple domains based on channel state information reference signal resource configurations received from the network node device; selecting a feedback format from a group of feedback formats received from the network node device, wherein; the feedback format to the network node device comprises an indicator of channel state information for the multiple domains, the indicator is used for selection of a transmission parameter defining a transmission protocol for transmissions between the user equipment and the network node device, and the feedback formats relate to the transmission protocol; and transmitting, to the network node device, feedback conforming to the feedback format. - View Dependent Claims (9, 10, 11, 12, 18)
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13. A method, comprising:
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based on a signal received from a user equipment indicating that the user equipment has decomposed a multiple input multiple output channel into multiple domains, configuring channel state information reference signal resources for the user equipment to measure on the multiple domains; transmitting a message to the user equipment indicating the channel state information reference signal resources for the user equipment to measure on the multiple domains, wherein the message further comprises format information representative of a group of feedback formats; transmitting a channel state information reference signal on the channel state information reference signal resources configured for the multiple domains; receiving feedback from the user equipment, wherein the feedback comprises a feedback format selected from the group of feedback formats, wherein; the feedback format comprises an indicator of channel state information for the multiple domains, and the indicator of channel state information indicates a code-book entry related to a multiple input multiple output matrix for transmission of signals between the user equipment and the network device; decoding the feedback resulting in decoded feedback; based on the decoded feedback, selecting a transmission parameter comprising a transmission protocol for the transmission of the signals between the user equipment and the network device, wherein the selection of the transmission parameter is based on the indicator; and transmitting the transmission parameter to the user equipment. - View Dependent Claims (14, 15, 16, 19, 20)
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Specification