# US 10,873,439 B2 · Method and apparatus for multiplexing channel state information > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,439 B2 - Document ID: US10873439B2 - Status: Granted - Kind: B2 - Application number: 15/833,746 - Filed: 2017-12-06 - Published: 2018-06-21 - Granted: 2020-12-22 - Earliest claimed: 2016-12-16 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Eko Onggosanusi; Md Saifur Rahman; Aris Papasakellariou - Web page: https://patentgrep.com/patent/US10873439B2 ## CPC - H04L 5/0057: {Physical resource allocation for CQI} - H04B 7/0417: Feedback systems - H04B 7/0478: {Special codebook structures directed to feedback optimisation} - H04B 7/0486: {taking channel rank into account} - H04B 7/0639: {Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 72/542: using measured or perceived quality - H04W 72/563: of the wireless resources - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04B 7/0632: {Channel quality parameters, e.g. channel quality indicator [CQI]} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Methods and apparatuses for multiplexing channel state information (CSI). A user equipment (UE) includes a transceiver configured to receive configuration information for CSI reporting. The UE further includes a processor configured to decode the configuration information and calculate a CSI according to the configuration information. The transceiver is further configured to transmit the calculated CSI on an uplink (UL) channel. The CSI includes N segments and is transmitted in one slot, where N>1. A first of the N segments includes a rank indicator (RI) and at least one other CSI parameter. A base station (BS) includes a processor configured to generate configuration information for CSI reporting. The BS further includes a transceiver configured to transmit, to a UE, the configuration information via a downlink (DL) channel; and receive, from the UE, a CSI report calculated in accordance with the configuration information on an uplink UL channel. ## Claims ### Claim 1 A user equipment (UE), comprising: a transceiver configured to receive configuration information for channel state information (CSI) reporting; and a processor operably connected to the transceiver, the processor configured to decode the configuration information and calculate a CSI according to the configuration information, wherein the transceiver is further configured to transmit the calculated CSI on an uplink (UL) channel, wherein the CSI includes N segments and is transmitted in one slot, wherein N is two, wherein a first of the two segments includes a rank indicator (RI) and a channel quality indicator (CQI) for a first codeword (CW), wherein, in case that the RI reported in the first segment is greater than four, a second of the two segments contains a precoding matrix indicator (PMI) and CQI relating to a second CW, wherein, in case that the RI reported in the first segment is equal to or less than four, the second of the two segments contains the PMI without the CQI relating to the second CW, and wherein the first segment and the second segment are separately encoded. ### Claim 2 (depends on 1) The UE of claim 1, wherein the first segment further includes two indicators that correspond to a number of reported wideband amplitude coefficients for a first and a second layer, respectively. ### Claim 3 (depends on 1) The UE of claim 1, wherein the PMI includes PMI part 1 and PMI part 2. ### Claim 4 (depends on 1) The UE of claim 1, wherein the PMI and the CQI relating to the second CW in the second segment are jointly encoded in case that the RI reported in the first segment is greater than four. ### Claim 5 (depends on 1) The UE of claim 1, wherein a payload of the second segment is identified based on a value reported in the first segment. ### Claim 6 (depends on 1) The UE of claim 1, wherein the RI and the CQI for the first CW in the first segment are jointly encoded. ### Claim 7 (depends on 1) The UE of claim 1, wherein the calculated CSI is transmitted on a physical shared channel (PUSCH). ### Claim 8 (depends on 1) The UE of claim 1, wherein the first segment further includes a CSI reference signal resource indicator (CRI). ### Claim 9 A base station (BS), comprising: a processor configured to generate configuration information for channel state information (CSI) reporting; and a transceiver operably connected to the processor, the transceiver configured to: transmit, to a user equipment (UE), the configuration information via a downlink (DL) channel, and receive, from the UE a CSI calculated in accordance with the configuration information on an uplink (UL) channel, wherein the CSI includes separately encoded N segments, and is received in one slot, wherein N is two, wherein a first of the two segments includes a rank indicator (RI), and a channel quality indicator (CQI) for a first codeword (CW), and wherein, in case that the RI reported in the first segment is greater than four, a second of the two segments contains a precoding matrix indicator (PMI) and CQI relating to a second CW, and wherein, in case that the RI reported in the first segment is equal to or less than four, the second of the two segments contains the PMI without the CQI relating to the second CW. ### Claim 10 (depends on 9) The BS of claim 9, wherein the first segment further includes two indicators that correspond to a number of reported wideband amplitude coefficients for a first and a second layer, respectively. ### Claim 11 (depends on 9) The BS of claim 9, wherein the PMI includes PMI part 1 and PMI part 2. ### Claim 12 (depends on 9) The BS of claim 9, wherein the second segment includes jointly encoded the PMI and the CQI relating to the second CW in case that the RI reported in the first segment is greater than four. ### Claim 13 (depends on 9) The BS of claim 9, wherein a payload of the second segment is identified based on a value reported in the first segment. ### Claim 14 (depends on 9) The UE of claim 9, wherein the RI and the CQI for the first CW in the first segment are jointly encoded. ### Claim 15 (depends on 9) The UE of claim 9, wherein the calculated CSI is transmitted on a physical shared channel (PUSCH). ### Claim 16 A method for operating a user equipment (UE), the method comprising: receiving and decoding configuration information for channel state information (CSI) reporting; decoding the configuration information; calculating a CSI according to the configuration information; and transmitting the calculated CSI on an uplink (UL) channel, wherein the CSI includes N segments and is transmitted in one slot, wherein N is two, wherein a first of the two segments includes a rank indicator (RI) and a channel quality indicator (CQI) for a first codeword (CW), and wherein, in case that the RI reported in the first segment is greater than four, a second of the two segments contains a precoding matrix indicator (PMI) and CQI relating to a second CW, wherein, in case that the RI reported in the first segment is equal to or less than four, the second of the two segments contains the PMI without the CQI relating to the second CW, and wherein the first segment and the second segment are separately encoded. ### Claim 17 (depends on 16) The method of claim 16, wherein the first segment further includes two indicators that correspond to a number of reported wideband amplitude coefficients for a first and a second layer, respectively. ### Claim 18 (depends on 16) The method of claim 16, wherein the second of the two segments includes CSI parameters associated with a precoding matrix indicator (PMI). ### Claim 19 (depends on 18) The method of claim 18, wherein the second segment further includes the CQI for a second CW when the RI reported in the first segment is greater than four. ### Claim 20 (depends on 16) The method of claim 16, wherein the first segment further includes a CSI reference signal resource indicator (CRI).