# US 10,484,956 B2 · Transmission timing adjustment method and device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,484,956 B2 - Document ID: US10484956B2 - Status: Granted - Kind: B2 - Application number: 16/225,770 - Filed: 2018-12-19 - Published: 2019-04-25 - Granted: 2019-11-19 - Earliest claimed: 2014-09-30 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Enhua He - Web page: https://patentgrep.com/patent/US10484956B2 ## CPC - H04W 56/0045: {compensating for timing error by altering transmission time} - H04W 24/02: Arrangements for optimising operational condition - H04W 56/00: Synchronisation arrangements - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 74/0833: Random access procedures, e.g. with 4-step 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 transmission timing adjustment method and device are provided. The method includes: determining, by a base station, a transmission delay between user equipment (UE) and the base station; generating, a timing advance (TA) quantized value according to the transmission delay, where the TA quantized value includes a base value and an offset value, quantization precision of the base value is first quantization precision MTs, quantization precision of the offset value is second quantization precision NTs, M is a positive integer less than or equal to 16, N is a nonnegative integer less than M, and Ts is a minimum time unit in a LTE system and has a value of 1/30.72 μs; and sending, by the base station, the TA quantized value to the UE, where the TA quantized value is used for uplink transmission timing adjustment of the UE. The embodiments facilitate network planning and optimization. ## Claims ### Claim 1 A method of transmission timing adjustment, comprising: sending, by user equipment (UE) to a base station, a random access preamble; receiving, by the UE from the base station, a random access response that comprises a timing advance (TA) quantized value, wherein quantization precision of the TA quantized value is MTs, and a quantity of bits occupied by the TA quantized value is more than 11 bits, wherein M is a positive integer less than 16, and Ts has a value of 1/30.72 ρs; determining, by the UE, a transmission timing adjustment amount according to the TA quantized value; and performing, by the UE, uplink transmission timing adjustment according to the transmission timing adjustment amount. ### Claim 2 (depends on 1) The method according to claim 1, wherein during random access, the transmission timing adjustment amount is NTA, NTA=TA_BASE*M, a unit of NTA is Ts, TA_BASE is the TA quantized value. ### Claim 3 (depends on 1) The method according to claim 1, wherein during non-random access, the transmission timing adjustment amount is NTA,new, NTA,new=NTA,old (TA_BASE−m)*M, a unit of NTA,new is Ts, NTA,old is a previous transmission timing adjustment amount, TA_BASE is the TA quantized value, m is [a maximum value of TA_BASE/2], and [ ] represents rounding up or rounding down. ### Claim 4 (depends on 1) The method according to claim 1, wherein the quantization precision of the TA quantized value comprises 1 Ts, 2 Ts, 4 Ts, or 8 Ts. ### Claim 5 A device, comprising: a processor, configured to execute a program stored in a non-transitory computer readable storage medium, when the program is executed by the processor, the following are performed: sending to a base station a random access preamble; receiving from the base station a random access response that comprises a timing advance (TA) quantized value, wherein quantization precision of the TA quantized value is MTs, and a quantity of bits occupied by the TA quantized value is more than 11 bits, wherein M is a positive integer less than 16, and Ts has a value of 1/30.72 μs; determining a transmission timing adjustment amount according to the TA quantized value; and performing uplink transmission timing adjustment according to the transmission timing adjustment amount. ### Claim 6 (depends on 5) The device according to claim 5, wherein during random access, the transmission timing adjustment amount is NTA, NTA=TA_BASE*M, a unit of NTA is Ts, TA_BASE is the TA quantized value. ### Claim 7 (depends on 5) The device according to claim 5, wherein during non-random access, the transmission timing adjustment amount is NTA,new, NTA,new=NTA,old (TA_BASE−m)*M, a unit of NTA,new is Ts, NTA,old is a previous transmission timing adjustment amount, TA_BASE is the TA quantized value, m is [a maximum value of TA_BASE/2], and [ ] represents rounding up or rounding down. ### Claim 8 (depends on 5) The device according to claim 5, wherein the quantization precision of the TA quantized value comprises 1 Ts, 2 Ts, 4 Ts, or 8 Ts. ### Claim 9 A non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium stores a program which, when the program is executed by a processor, the following are performed: sending to a base station a random access preamble; receiving from the base station a random access response that comprises a timing advance (TA) quantized value, wherein quantization precision of the TA quantized value is MTs, and a quantity of bits occupied by the TA quantized value is more than 11 bits, wherein M is a positive integer less than 16, and Ts has a value of 1/30.72 ρs; determining a transmission timing adjustment amount according to the TA quantized value; and performing uplink transmission timing adjustment according to the transmission timing adjustment amount. ### Claim 10 (depends on 9) The non-transitory computer readable storage medium according to claim 9, wherein during random access, the transmission timing adjustment amount is NTA, NTA=TA_BASE*M, a unit of NTA is Ts, TA_BASE is the TA quantized value. ### Claim 11 (depends on 9) The non-transitory computer readable storage medium according to claim 9, wherein the quantization precision of the TA quantized value comprises 1 Ts, 2 Ts, 4 Ts, or 8 Ts. ### Claim 12 (depends on 9) The non-transitory computer readable storage medium according to claim 9, wherein during non-random access, the transmission timing adjustment amount is NTA,new, NTA,new=NTA,old (TA_BASE−m)*M, a unit of NTA,new is Ts, NTA,old is a previous transmission timing adjustment amount, TA_BASE is the TA quantized value, m is [a maximum value of TA_BASE/2], and [ ] represents rounding up or rounding down.