# US 11,452,047 B2 · Method and apparatus for transmitting an uplink transmission based on a pathloss estimate > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,452,047 B2 - Document ID: US11452047B2 - Status: Granted - Kind: B2 - Application number: 17/128,155 - Filed: 2020-12-20 - Published: 2021-05-20 - Granted: 2022-09-20 - Earliest claimed: 2018-05-11 - Assignees: Lenovo (Singapore) Pte. Ltd. - Applicants: Lenovo (Singapore) Pte. Ltd. - Inventors: Ebrahim MolavianJazi; Hyejung Jung; Vijay Nangia - Web page: https://patentgrep.com/patent/US11452047B2 ## CPC - H04W 52/242: {taking into account path loss} - H04B 17/347: {Path loss} - 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)} - H04W 48/16: Discovering, processing access restriction or access information - H04W 52/146: {Uplink power control} - H04W 52/16: Deriving transmission power values from another channel - H04W 52/325: {Power control of control or pilot channels} - H04W 52/40: during macro-diversity or soft handoff - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Configuration information including a cell identifier can be transmitted on a first cell. A pathloss reference signal associated with a second cell can be transmitted. An uplink transmission can be received from a user equipment on the first cell. A transmit power of the uplink transmission can be determined by the user equipment based on the pathloss reference signal. The pathloss reference signal can be based on the configuration information including the cell identifier. ## Claims ### Claim 1 A method in a network entity, the method comprising: transmitting configuration information on a first cell, the configuration information including a cell identifier; transmitting a pathloss reference signal associated with a second cell; and receiving, at the network entity, an uplink transmission from a user equipment on the first cell, where a transmit power of the uplink transmission is determined by the user equipment based on the pathloss reference signal, where the pathloss reference signal is based on the configuration information including the cell identifier. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first and second cells are serving cells of the user equipment, and the second cell is different from the first cell. ### Claim 3 (depends on 1) The method according to claim 1, wherein transmitting the pathloss reference signal comprises transmitting the pathloss reference signal on the second cell. ### Claim 4 (depends on 1) The method according to claim 1, wherein the configuration information includes an identification of the pathloss reference signal. ### Claim 5 (depends on 1) The method according to claim 1, wherein the cell identifier in the configuration information indicates the second cell, and wherein the transmit power of the uplink transmission is determined by the user equipment based on a pathloss estimate, where the pathloss estimate is determined based on the pathloss reference signal associated with the second cell when the configuration information includes the cell identifier indicating the second cell. ### Claim 6 (depends on 1) The method according to claim 1, wherein the configuration information comprises first configuration information, the user equipment comprises a first user equipment, the pathloss reference signal comprises a first pathloss reference signal, and the uplink transmission comprises a first uplink transmission, and wherein the method further comprises: transmitting second configuration information without a cell identifier on the first cell; transmitting a second pathloss reference signal on the first cell; and receiving a second uplink transmission from a second user equipment on the first cell, where a transmit power of the second uplink transmission is determined by the second user equipment based on the second pathloss reference signal, where the second pathloss reference signal is based on the second configuration information without the cell identifier. ### Claim 7 (depends on 1) The method according to claim 1, wherein the configuration information comprises spatial relation information configuring at least one physical uplink control channel spatial relation, and wherein the uplink transmission comprises a physical uplink control channel. ### Claim 8 (depends on 7) The method according to claim 7, wherein the spatial relation information includes an indication of a spatial relation reference signal, wherein the method further comprises transmitting the spatial relation reference signal associated with the second cell when the spatial relation information includes the cell identifier, and wherein the physical uplink control channel is transmitted by the user equipment on the first cell based on a same spatial domain filter as a spatial domain filter used by the user equipment for communication of the spatial relation reference signal on the second cell. ### Claim 9 (depends on 8) The method according to claim 8, wherein the spatial relation reference signal comprises a sounding reference signal, and wherein communication of the spatial relation reference signal comprises transmission of the sounding reference signal from the user equipment on the second cell. ### Claim 10 (depends on 8) The method according to claim 8, wherein the spatial relation reference signal comprises at least one selected from a synchronization signal/physical broadcast channel block and a channel state information-reference signal, and wherein communication of the spatial relation reference signal comprises reception of the at least one selected from the synchronization signal/physical broadcast channel block and the channel state information-reference signal by the user equipment on the second cell. ### Claim 11 (depends on 7) The method according to claim 7, wherein the spatial relation information includes at least one power control related parameter indicating the pathloss reference signal, and wherein the transmit power of the physical uplink control channel is determined by the user equipment based on the pathloss reference signal associated with the second cell when the spatial relation information includes the cell identifier. ### Claim 12 (depends on 1) The method according to claim 1, wherein the configuration information including the cell identifier corresponds to a pathloss linking parameter indicating that the pathloss reference signal is associated with the second cell. ### Claim 13 (depends on 12) The method according to claim 12, wherein the configuration information further comprises sounding reference signal resource set information, and wherein the uplink transmission comprises a sounding reference signal. ### Claim 14 (depends on 12) The method according to claim 12, wherein the uplink transmission comprises a physical uplink shared channel, wherein the method further comprises transmitting sounding reference signal resource indicator-physical uplink shared channel power control configuration mapping information, where the sounding reference signal resource indicator-physical uplink shared channel power control configuration mapping information maps physical uplink shared channel power control parameters to each of at least two sounding reference signal resource indicator values for a sounding reference signal resource indicator field in a downlink control information for the physical uplink shared channel, and wherein the transmit power of the physical uplink shared channel is determined by the user equipment based on the pathloss reference signal and the sounding reference signal resource indicator-physical uplink shared channel power control configuration mapping information. ### Claim 15 (depends on 14) The method according to claim 14, further comprising transmitting downlink control information in a control channel, the downlink control information including a sounding reference signal resource indicator field, wherein a physical uplink shared channel power control parameter for the physical uplink shared channel is based on a sounding reference signal resource indicator value of the sounding reference signal resource indicator values indicated by the sounding reference signal resource indicator field and the sounding reference signal resource indicator-physical uplink shared channel power control configuration mapping information, wherein the transmit power of the physical uplink shared channel is determined by the user equipment based on the pathloss reference signal and the physical uplink shared channel power control parameter. ### Claim 16 An apparatus comprising: a controller that controls operations of the apparatus; and a transceiver coupled to the controller, where the transceiver transmits configuration information on a first cell, the configuration information including a cell identifier, transmits a pathloss reference signal associated with a second cell, and receives an uplink transmission from a user equipment on the first cell, where a transmit power of the uplink transmission is determined by the user equipment based on the pathloss reference signal, where the pathloss reference signal is based on the configuration information including the cell identifier. ### Claim 17 (depends on 16) The apparatus according to claim 16, wherein the first and second cells are serving cells of the user equipment, and the second cell is different from the first cell. ### Claim 18 (depends on 16) The apparatus according to claim 16, wherein transmitting the pathloss reference signal comprises transmitting the pathloss reference signal on the second cell. ### Claim 19 (depends on 16) The apparatus according to claim 16, wherein the configuration information includes an identification of the pathloss reference signal. ### Claim 20 (depends on 16) The apparatus according to claim 16, wherein the cell identifier in the configuration information indicates the second cell, and wherein the transmit power of the uplink transmission is determined by the user equipment based on a pathloss estimate, where the pathloss estimate is determined based on the pathloss reference signal associated with the second cell when the configuration information includes the cell identifier indicating the second cell.