# US 11,910,425 B2 · User equipment and base station involved in the transmission of data > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,425 B2 - Document ID: US11910425B2 - Status: Granted - Kind: B2 - Application number: 17/093,163 - Filed: 2020-11-09 - Published: 2021-03-18 - Granted: 2024-02-20 - Earliest claimed: 2018-09-27 - Assignees: Panasonic Intellectual Property Corporation of America - Applicants: Panasonic Intellectual Property Corporation of America - Inventors: Ankit Bhamri; Hidetoshi Suzuki; Hongchao Li; Tetsuya Yamamoto; Quan Kuang; Rikin Shah - Web page: https://patentgrep.com/patent/US11910425B2 ## CPC - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04W 72/542: using measured or perceived quality - H04L 1/0026: {Transmission of channel quality indication} - H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0057: {Physical resource allocation for CQI} - H04L 1/1825: Adaptation of specific ARQ protocol parameters according to transmission conditions - H04L 1/1848: {Time-out mechanisms} - H04L 1/188: {Time-out mechanisms} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The present disclosure relates to a user equipment (UE) which comprises a transmitter, which transmits a signal to a base station over a channel, wherein the signal is transmitted based on an initial channel quality information indicating a first channel quality of the channel. A receiver of the UE receives a transmission quality information indicating a second channel quality of the channel used for transmitting the signal. A processing circuitry of the UE estimates a transmission quality based on the initial channel quality information and the transmission quality information, wherein the transmission quality indicates whether the transmission of the signal over the channel was successful or not. ## Claims ### Claim 1 A user equipment, comprising: a transmitter, which in operation, transmits a signal to a base station over a channel, wherein the signal is transmitted based on an initial channel quality information indicating a first channel quality of the channel and obtained by the user equipment before transmitting the signal; a receiver, which in operation, receives, after transmitting the signal, a transmission quality information that is not an acknowledgement (ACK) or a non-acknowledgement (NACK) and that indicates a second channel quality of the channel used for transmitting the signal; and a processing circuitry, which in operation, estimates a transmission quality based on the initial channel quality information and the transmission quality information; compares the transmission quality to a threshold; and determines that the transmission of the signal over the channel was successful in response to the transmission quality exceeding the threshold. ### Claim 2 (depends on 1) The user equipment according to claim 1, wherein the transmission quality information is determined by the base station upon receiving at least a part of the transmitted signal. ### Claim 3 (depends on 1) The user equipment according to claim 1, wherein the transmission quality information is determined by the base station based on a reference signal. ### Claim 4 (depends on 1) The user equipment according to claim 1, wherein after the processing circuitry estimates that the transmission of the signal over the channel was not successful, the transmitter, in operation, performs signal transmission based on the transmission quality information. ### Claim 5 (depends on 1) The user equipment according to claim 1, wherein the processing circuitry, in operation, determines that the transmission of the signal was not successful if the receiver, in operation, receives a retransmission request for retransmitting at least a part of the signal. ### Claim 6 (depends on 1) The user equipment according to claim 1, wherein the receiver, in operation, receives a grant for retransmission of the signal over the channel. ### Claim 7 (depends on 1) The user equipment according to claim 1, wherein in case that the processing circuitry estimates that the transmission of the signal over the channel was successful, the processing circuitry, in operation, deletes the signal from a transmission buffer of the user equipment; or the processing circuitry, in operation, aborts transmission repetition of the signal. ### Claim 8 (depends on 1) The user equipment according to claim 1, wherein the initial channel quality information indicates at least a transmission parameter including a modulation scheme or a code rate. ### Claim 9 A base station, comprising: a receiver, which in operation, receives at least a part of a signal from a user equipment over a channel, wherein the signal is transmitted based on an initial channel quality information obtained by the user equipment before transmitting the signal and indicating a first channel quality of the channel; a processing circuitry, which in operation, determines during processing the received signal a transmission quality information that is not an acknowledgement (ACK) or a non-acknowledgement (NACK) and that indicates a second channel quality of the channel used for receiving the signal; and a transmitter, which in operation, transmits the transmission quality information upon determining the transmission quality information, wherein the user equipment estimates a transmission quality based on the initial channel quality information and the transmission quality information, compares the transmission quality to a threshold and determines that the transmission of the signal over the channel was successful in response to the transmission quality exceeding the threshold. ### Claim 10 (depends on 9) The base station according to claim 9, wherein the processing circuitry, in operation, determines the transmission quality information based on a reference signal. ### Claim 11 (depends on 9) The base station according to claim 9, wherein the receiver, in operation, monitors, upon expiry of a retransmission timer, the channel for retransmission or repetition of the signal. ### Claim 12 (depends on 9) The base station according to claim 9, wherein the processing circuitry, in operation, determines after processing the received signal whether the reception of the signal over the channel was successful or not. ### Claim 13 A method performed by a user equipment, comprising: transmitting a signal to a base station over a channel, wherein the signal is transmitted based on an initial channel quality information indicating a first channel quality of the channel and obtained by the user equipment before transmitting the signal; receiving, after transmitting the signal, a transmission quality information that is not an acknowledgement (ACK) or a non-acknowledgement (NACK) and that indicates a second channel quality of the channel used for transmitting the signal; estimating a transmission quality based on the initial channel quality information and the transmission quality information; comparing the transmission quality to a threshold; and determining that the transmission of the signal over the channel was successful in response to the transmission quality exceeding the threshold.