# US 2023/0054077 A1 · Dynamic quantization of channel quality information > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0054077 A1 - Document ID: US20230054077A1 - Status: Published application - Kind: A1 - Application number: 17/821,125 - Filed: 2022-08-19 - Published: 2023-02-23 - Earliest claimed: 2021-08-20 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Yi HUANG; Peter GAAL; Wanshi CHEN - Web page: https://patentgrep.com/patent/US20230054077A1 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0057: {Physical resource allocation for CQI} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a signal associated with a communication channel. The UE may transmit a channel quality indicator (CQI) report comprising one or more CQI values based at least in part on a determined number of bits used to represent the one or more CQI values. The number of bits used to represent the one or more CQI values is based at least in part on a number of the one or more subbands. Numerous other aspects are described. ## Claims ### Claim 1 A method of wireless communication performed by a user equipment (UE), comprising: receiving a control message that includes a quantization indication that indicates a number of bits used to represent one or more channel quality indicator (CQI) values corresponding to one or more subbands to be reported in a CQI report, wherein the number of bits used to represent each of the one or more CQI values is based at least in part on a number of the one or more subbands to be reported in the CQI report; receiving a signal associated with a communication channel; and transmitting the CQI report comprising the one or more CQI values based at least in part on the quantization indication. ### Claim 2 (depends on 1) The method of claim 1, wherein the number of bits used to represent the one or more CQI values is a first number of bits based at least in part on a determination that the number of subbands to be reported in the CQI report comprises a first number of subbands or the number of bits used to represent the one or more CQI values is a second number of bits based at least in part on a determination that the number of subbands to be reported in the CQI report comprises a second number of subbands, wherein the first number of bits is greater than the second number of bits, and wherein the first number of subbands is less than the second number of subbands. ### Claim 3 (depends on 1) The method of claim 1, wherein each of the one or more CQI values is a differential CQI value representing a difference between a CQI index corresponding to a subband associated with each CQI and a CQI index corresponding to a wideband CQI. ### Claim 4 (depends on 3) The method of claim 3, wherein each of the one or more differential CQI values corresponds to a quantized CQI offset value. ### Claim 5 (depends on 1) The method of claim 1, wherein each of the one or more CQI values is a CQI index. ### Claim 6 (depends on 1) The method of claim 1, wherein the control message comprises a radio resource control message or a downlink control information transmission. ### Claim 7 A method of wireless communication performed by a user equipment (UE), comprising: receiving a signal associated with a communication channel; determining a number of bits used to represent one or more channel quality indicator (CQI) values corresponding to one or more subbands to be reported in a CQI report, wherein the number of bits used to represent each of the one or more CQI values is based at least in part on a number of the one or more subbands to be reported in the CQI report; and transmitting the CQI report comprising the one or more CQI values based at least in part on the determined number of bits. ### Claim 8 (depends on 7) The method of claim 7, further comprising: performing a comparison between the number of the one or more subbands and at least one subband threshold, wherein determining the number of bits comprises determining the number of bits based at least in part on a result of the comparison. ### Claim 9 (depends on 8) The method of claim 8, wherein performing the comparison comprises determining that the number of the one or more subbands satisfies the at least one subband threshold, and wherein determining the number of bits comprises selecting three bits to represent the one or more CQI values. ### Claim 10 (depends on 8) The method of claim 8, wherein performing the comparison comprises determining that the number of the one or more subbands fails to satisfy the at least one subband threshold, and wherein determining the number of bits comprises selecting two bits to represent the one or more CQI values. ### Claim 11 (depends on 8) The method of claim 8, further comprising obtaining the at least one subband threshold. ### Claim 12 (depends on 11) The method of claim 11, wherein the at least one subband threshold is based at least in part on a wireless communication standard. ### Claim 13 (depends on 11) The method of claim 11, wherein obtaining the at least one subband threshold comprises receiving an indication of the at least one subband threshold. ### Claim 14 (depends on 13) The method of claim 13, wherein receiving the indication of the at least one subband threshold comprises receiving a radio resource control (RRC) message that includes the indication of the at least one subband threshold. ### Claim 15 A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors, coupled to the memory, configured to: receive a control message that includes a quantization indication that indicates a number of bits used to represent one or more channel quality indicator (CQI) values corresponding one or more subbands to be reported in a CQI report, wherein the number of bits used to represent each of the one or more CQI values is based at least in part on a number of the one or more subbands to be reported in the CQI report; receive a signal associated with a communication channel; and transmit the CQI report comprising the one or more CQI values based at least in part on the quantization indication. ### Claim 16 (depends on 15) The UE of claim 15, wherein the number of bits used to represent the one or more CQI values is a first number of bits based at least in part on a determination that the number of subbands to be reported in the CQI report comprises a first number of subbands or the number of bits used to represent the one or more CQI values is a second number of bits based at least in part on a determination that the number of subbands to be reported in the CQI report comprises a second number of subbands, wherein the first number of bits is greater than the second number of bits, and wherein the first number of subbands is less than the second number of subbands. ### Claim 17 (depends on 15) The UE of claim 15, wherein each of the one or more CQI values is a differential CQI value representing a difference between a CQI index corresponding to a subband associated with each CQI and a CQI index corresponding to a wideband CQI. ### Claim 18 (depends on 17) The UE of claim 17, wherein each of the one or more differential CQI values corresponds to a quantized CQI offset value. ### Claim 19 (depends on 15) The UE of claim 15, wherein each of the one or more CQI values is a CQI index. ### Claim 20 A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors, coupled to the memory, configured to: receive a signal associated with a communication channel; determine a number of bits used to represent one or more channel quality indicator (CQI) values corresponding to one or more subbands to be reported in a CQI report, wherein the number of bits used to represent each of the one or more CQI values is based at least in part on a number of the one or more subbands to be reported in the CQI report; and transmit the CQI report comprising the one or more CQI values based at least in part on the determined number of bits. ### Claim 21 (depends on 20) The UE of claim 20, wherein the one or more processors are further configured to: performing a comparison between the number of the one or more subbands and at least one subband threshold, wherein the one or more processors, to determine the number of bits, are configured to determine the number of bits based at least in part on a result of the comparison. ### Claim 22 (depends on 21) The UE of claim 21, wherein the one or more processors, to perform the comparison, are configured to determine that the number of the one or more subbands satisfies the at least one subband threshold, and wherein the one or more processors, to determine the number of bits, are configured to select three bits to represent the one or more CQI values. ### Claim 23 (depends on 21) The UE of claim 21, wherein the one or more processors, to perform the comparison, are configured to determine that the number of the one or more subbands fails to satisfy the at least one subband threshold, and wherein the one or more processors, to determine the number of bits, are configured to select two bits to represent the one or more CQI values. ### Claim 24 (depends on 21) The UE of claim 21, wherein the one or more processors are further configured to obtain the at least one subband threshold. ### Claim 25 (depends on 24) The UE of claim 24, wherein the one or more processors, to obtain the at least one subband threshold, are configured to obtain the at least one subband threshold from a wireless communication standard. ### Claim 26 (depends on 24) The UE of claim 24, wherein the one or more processors, to obtain the at least one subband threshold, are configured to receive an indication of the at least one subband threshold. ### Claim 27 (depends on 26) The UE of claim 26, wherein the one or more processors, to receive the indication of the at least one subband threshold, are configured to receive a radio resource control (RRC) message that includes the indication of the at least one subband threshold. ### Claim 28 (depends on 20) The UE of claim 20, wherein the one or more processors are further configured to receive a quantization indication that indicates the number of bits used to represent the CQI value. ### Claim 29 (depends on 28) The UE of claim 28, wherein the one or more processors, to receive the quantization indication, are configured to receive at least one of a radio resource control (RRC) message that includes the quantization indication or a downlink control information (DCI) transmission that includes the quantization indication. ### Claim 30 (depends on 20) The UE of claim 20, wherein the control message comprises a radio resource control message or a downlink control information transmission.