# US 2021/0345281 A1 · Timing advance adjustment schemes in wireless communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0345281 A1 - Document ID: US20210345281A1 - Status: Published application - Kind: A1 - Application number: 17/369,805 - Filed: 2021-07-07 - Published: 2021-11-04 - Earliest claimed: 2019-01-11 - Assignees: Zte Corporation - Applicants: ZTE Corporation - Inventors: Zhen YANG; Nan ZHANG; Wei CAO; Kaibo TIAN - Web page: https://patentgrep.com/patent/US20210345281A1 ## CPC - H04W 56/0045: {compensating for timing error by altering transmission time} - H04B 7/1851: {Systems using a satellite or space-based relay (H04B7/18508, H04B7/18521 take precedence; providing specific services H04B7/18523 - H04B7/18576)} - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Methods, systems, and devices for TA adjustment schemes in a wireless communication are described. A wireless communication method is provided to include transmitting, by a network device, to a user device, a timing advance (TA) signaling including one or more TA adjustment parameters, the one or more TA adjustment parameters determined partially depending on the group of the user device. ## Claims ### Claim 1 A wireless communication method including: transmitting, by a network device, to a user device, a timing advance (TA) signaling including one or more TA adjustment parameters, the one or more TA adjustment parameters determined depending on a group of the user device. ### Claim 2 (depends on 1) The wireless communication method of claim 1, further comprising receiving, by the network device, information from the user device, and wherein the information includes a capability information including whether the user device has an autonomous TA adjustment capability or whether the user device has a group-based TA adjustment capability, or a physical location or a serving beam of the user device. ### Claim 3 (depends on 1) The wireless communication method of claim 1, further comprising grouping the user device in the group based on the information, and wherein the grouping the user device includes grouping the user device based on whether the use device has an autonomous TA adjustment capability or based on geographical location of the user device. ### Claim 4 (depends on 1) The wireless communication method of claim 1, further comprising: transmitting, by the network device, to the user device, a packet group configuration information including at least one of i) a group index of the user device, ii) a validation duration or timer of a group configuration, iii) mapping relationship between the group index and the one or more TA adjustment parameters, or iv) identification (ID) of the user device. ### Claim 5 (depends on 1) The wireless communication method of claim 1, wherein the one or more TA adjustment parameters include at least one of i) a first TA value shared with another device in the group, ii) a second TA value, iii) a group index, iv) mapping relationship between the group index and the one or more TA adjustment parameters, v) a TA variation rate, or vi) a validation duration or timer of the one or more TA adjustment parameters. ### Claim 6 (depends on 5) The wireless communication method of claim 5, wherein the first TA value is transmitted together with the group index by the TA signaling, or multiple TA parameters are transmitted by the TA signaling. ### Claim 7 (depends on 1) The wireless communication method of claim 1, wherein the TA signaling includes at least one of a system information, an RRC (Radio Resource Control) configuration, or MAC CE (MAC Control Element). ### Claim 8 (depends on 1) The wireless communication method of claim 1, wherein the transmitting the TA signaling includes: (i) transmitting the TA signaling to the user device in an unicast manner if the user device falls in a first group having an autonomous TA adjustment capability, (ii) transmitting the TA signaling to the user device only, if the user device falls in a second group having no autonomous TA adjustment capability and a smaller number of uplink errors reaches a threshold, or (iii) transmitting the TA signaling to the user device and an additional user device of the second group in the unicast manner, if the user device falls in the second group and a great number of uplink errors reaches the threshold. ### Claim 9 (depends on 1) The wireless communication method of claim 1, further comprising: updating the group of the user device based on i) monitoring of a communication from the user device, or ii) detecting of an uplink timing deviation of user devices in the group. ### Claim 10 (depends on 9) The wireless communication method of claim 9, wherein the updating the group of the user device includes at least one of i) moving the user device to another group, or ii) changing a subgroup of the user device in the group. ### Claim 11 A wireless communication method including: receiving, by a user device, from a network device, at least one of i) a group information indicating a group assigned to the user device; or ii) one or more TA adjustment parameters included in a timing advance (TA) signaling; and determining, by the user device, a TA value for an uplink transmission based on the receiving. ### Claim 12 (depends on 11) The wireless communication method of claim 11, further comprising transmitting, by a user device, to a network device, an information, and wherein the information of the user device includes information related to at least one of a positioning capability, a positioning accuracy, a calculation level of the user device, a GPS transmit information, a geographical location of the user device, a serving beam of the user device, an autonomous TA adjustment capability, or a group-based TA adjustment capability. ### Claim 13 (depends on 11) The wireless communication method of claim 11, wherein the TA value is determined based on at least one of a first TA adjustment parameter shared by the group, a second TA adjustment parameter that is specific to the user device, a TA variation rate, or a previous TA value. ### Claim 14 (depends on 11) The wireless communication method of claim 11, further comprising: performing, by the user device, a capability reporting including whether the user device has an autonomous TA adjustment capability or whether the user device has a group-based TA adjustment capability. ### Claim 15 (depends on 11) The wireless communication method of claim 11, wherein if the group information indicates the user device falls in a first group having an autonomous TA calculation capability, the receiving step includes receiving the TA signaling sent in an unicast form and if the group information indicates the user device falls in a second group having no autonomous TA calculation capability, the receiving step includes simultaneously receiving the TA signaling sent in the unicast form and a broadcast form. ### Claim 16 A wireless communications apparatus comprising a processor and a memory, wherein the processor is configured to read code from the memory and implement a method comprising: transmitting, by a network device, to a user device, a timing advance (TA) signaling including one or more TA adjustment parameters, the one or more TA adjustment parameters determined depending on a group of the user device.