# US 12,010,634 B2 · Power control for message transmissions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,634 B2 - Document ID: US12010634B2 - Status: Granted - Kind: B2 - Application number: 17/730,918 - Filed: 2022-04-27 - Published: 2022-08-18 - Granted: 2024-06-11 - Earliest claimed: 2018-09-27 - Assignees: Comcast Cable Communications, LLC - Applicants: Comcast Cable Communications, LLC - Inventors: Hyoungsuk Jeon; Esmael Hejazi Dinan; Hua Zhou; Kai Xu; Alireza Babaei; Kyungmin Park; Ali Cagatay Cirik - Web page: https://patentgrep.com/patent/US12010634B2 ## CPC - H04W 52/36: with a discrete range or set of values, e.g. step size, ramping or offsets - H04W 52/228: {using past power values or information} - H04W 52/48: during retransmission after error or non-acknowledgment - H04W 52/50: at the moment of starting communication in a multiple access environment - H04W 74/0866: {using a dedicated channel for access} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A wireless device may use power ramping for transmissions of message preambles and/or transport blocks. A first ramped transmission power may be used to transmit a preamble of a message, and a second ramped transmission power may be used to transmit a transport block of the message. Channel access procedures may be used to determine clear channel or busy channel for transmissions. ## Claims ### Claim 1 A method comprising: performing, by a wireless device, a first channel access procedure for transmission of a first preamble of a message; performing a second channel access procedure for transmission of a first transport block of the message; transmitting, based on the first channel access procedure indicating a clear channel and the second channel access procedure indicating a busy channel, a portion of the message comprising the first preamble; based on an expiration of a time duration for reception of the message: transmitting, using a first ramped transmission power, a second preamble; and transmitting, using a second ramped transmission power, the first transport block. ### Claim 2 (depends on 1) The method of claim 1, further comprising: adjusting, based on the transmitting the portion of the message comprising the first preamble, a power ramping counter; and determining, based on the adjusted power ramping counter, the first ramped transmission power and the second ramped transmission power. ### Claim 3 (depends on 1) The method of claim 1, further comprising receiving configuration parameters that indicate: a first random access channel for transmission of the first preamble, and a first uplink channel for transmission of the first transport block. ### Claim 4 (depends on 1) The method of claim 1, further comprising: monitoring, during the time duration, a downlink control channel for an indication of reception of the message; and determining, based on the expiration of the time duration for reception of the message, an unsuccessfully completed reception, wherein the transmitting the second preamble and the transmitting the first transport block are further based on the unsuccessfully completed reception. ### Claim 5 (depends on 1) The method of claim 1, further comprising: determining, based on the expiration of the time duration for reception of the message, that a contention resolution is unsuccessfully completed, wherein the transmitting the second preamble and the transmitting the first transport block are further based on the unsuccessfully completed contention resolution. ### Claim 6 (depends on 1) The method of claim 1, further comprising: determining, based on a transmission power of the transmitting the portion of the message comprising the first preamble, the first ramped transmission power and the second ramped transmission power. ### Claim 7 (depends on 1) The method of claim 1, wherein the first channel access procedure comprises a first listen-before-talk (LBT) procedure and the second channel access procedure comprises a second LBT procedure. ### Claim 8 (depends on 1) The method of claim 1, further comprising: determining, based on the expiration of the time duration for reception of the message, the first ramped transmission power and the second ramped transmission power. ### Claim 9 (depends on 1) The method of claim 1, further comprising: based on the clear channel indicated by the first channel access procedure, determining to transmit the first preamble of the message; and based on the busy channel indicated by the second channel access procedure, determining not to transmit the first transport block of the message. ### Claim 10 (depends on 1) The method of claim 1, wherein the expiration of the time duration for reception of the message comprises not receiving a response to the message by the time duration. ### Claim 11 A wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause configure the wireless device to: perform a first channel access procedure for transmission of a first preamble of a message; perform a second channel access procedure for transmission of a first transport block of the message; transmit, based on the first channel access procedure indicating a clear channel and the second channel access procedure indicating a busy channel, a portion of the message comprising the first preamble; based on an expiration of a time duration for reception of the message: transmit, using a first ramped transmission power, a second preamble; and transmit, using a second ramped transmission power, the first transport block. ### Claim 12 (depends on 11) The wireless device of claim 11, wherein the instructions, when executed by the one or more processors, configure the wireless device to: adjust, based on transmitting the portion of the message comprising the first preamble, a power ramping counter; and determine, based on the adjusted power ramping counter, the first ramped transmission power and the second ramped transmission power. ### Claim 13 (depends on 11) The wireless device of claim 11, wherein the instructions, when executed by the one or more processors, configure the wireless device to: receive configuration parameters that indicate: a first random access channel for transmission of the first preamble, and a first uplink channel for transmission of the first transport block. ### Claim 14 (depends on 11) The wireless device of claim 11, wherein the instructions, when executed by the one or more processors, configure the wireless device to: monitor, during the time duration, a downlink control channel for an indication of reception of the message; determine, based on the expiration of the time duration for reception of the message, an unsuccessfully completed reception; transmit the second preamble by transmitting, based on the unsuccessfully completed reception, the second preamble using the first ramped transmission power; and transmit the first transport block by transmitting, based on the unsuccessfully completed reception, the first transport block using the second ramped transmission power. ### Claim 15 (depends on 11) The wireless device of claim 11, wherein the instructions, when executed by the one or more processors, configure cause the wireless device to: determine, based on the expiration of the time duration for reception of the message, that a contention resolution is unsuccessfully completed; transmit the second preamble by transmitting, based on the unsuccessfully completed contention resolution, the second preamble using the first ramped transmission power; and transmit the first transport block by transmitting, based on the unsuccessfully completed contention resolution, the first transport block using the second ramped transmission power. ### Claim 16 (depends on 11) The wireless device of claim 11, wherein the instructions, when executed by the one or more processors, configure the wireless device to: determine, based on a transmission power of transmitting the portion of the message comprising the first preamble, the first ramped transmission power and the second ramped transmission power. ### Claim 17 (depends on 11) The wireless device of claim 11, wherein the first channel access procedure comprises a first listen-before-talk (LBT) procedure and the second channel access procedure comprises a second LBT procedure. ### Claim 18 (depends on 11) The wireless device of claim 11, wherein the instructions, when executed by the one or more processors, configure the wireless device to: determine, based on the expiration of the time duration for reception of the message, the first ramped transmission power and the second ramped transmission power. ### Claim 19 (depends on 11) The wireless device of claim 11, wherein the instructions, when executed by the one or more processors, configure the wireless device to: based on the clear channel indicated by the first channel access procedure, determine to transmit the first preamble of the message; and based on the busy channel indicated by the second channel access procedure, determine not to transmit the first transport block of the message. ### Claim 20 (depends on 11) The wireless device of claim 11, wherein the expiration of the time duration for reception of the message comprises not receiving a response to the message by the time duration. ### Claim 21 A non-transitory computer-readable medium storing instructions that, when executed, cause a wireless device to: perform a first channel access procedure for transmission of a first preamble of a message; perform a second channel access procedure for transmission of a first transport block of the message; transmit, based on the first channel access procedure indicating a clear channel and the second channel access procedure indicating a busy channel, a portion of the message comprising the first preamble; based on an expiration of a time duration for reception of the message: transmit, using a first ramped transmission power, a second preamble; and transmit, using a second ramped transmission power, the first transport block. ### Claim 22 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the instructions, when executed, cause the wireless device to: adjust, based on transmitting the portion of the message comprising the first preamble, a power ramping counter; and determine, based on the adjusted power ramping counter, the first ramped transmission power and the second ramped transmission power. ### Claim 23 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the instructions, when executed, cause the wireless device to receive configuration parameters that indicate: a first random access channel for transmission of the first preamble, and a first uplink channel for transmission of the first transport block. ### Claim 24 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the instructions, when executed, cause the wireless device to: monitor, during the time duration, a downlink control channel for an indication of reception of the message; determine, based on the expiration of the time duration for reception of the message, an unsuccessfully completed reception; transmit the second preamble by transmitting, based on the unsuccessfully completed reception, the second preamble using the first ramped transmission power; and transmit the first transport block by transmitting, based on the unsuccessfully completed reception, the first transport block using the second ramped transmission power. ### Claim 25 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the instructions, when executed, cause the wireless device to: determine, based on the expiration of the time duration for reception of the message, that a contention resolution is unsuccessfully completed; transmit the second preamble by transmitting, based on the unsuccessfully completed contention resolution, the second preamble using the first ramped transmission power; and transmit the first transport block by transmitting, based on the unsuccessfully completed contention resolution, the first transport block using the second ramped transmission power. ### Claim 26 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the instructions, when executed, cause the wireless device to: determine, based on a transmission power of transmitting the portion of the message comprising the first preamble, the first ramped transmission power and the second ramped transmission power. ### Claim 27 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the first channel access procedure comprises a first listen-before-talk (LBT) procedure and the second channel access procedure comprises a second LBT procedure. ### Claim 28 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the instructions, when executed, cause the wireless device to: determine, based on the expiration of the time duration for reception of the message, the first ramped transmission power and the second ramped transmission power. ### Claim 29 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the instructions, when executed, cause the wireless device to: based on the clear channel indicated by the first channel access procedure, determine to transmit the first preamble of the message; and based on the busy channel indicated by the second channel access procedure, determine not to transmit the first transport block of the message. ### Claim 30 (depends on 21) The non-transitory computer-readable medium of claim 21, wherein the expiration of the time duration for reception of the message comprises not receiving a response to the message by the time duration.