# US 12,598,562 B2 · Signaling TA-offset in NR > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,598,562 B2 - Document ID: US12598562B2 - Status: Granted - Kind: B2 - Application number: 18/657,288 - Filed: 2024-05-07 - Published: 2024-10-31 - Granted: 2026-04-07 - Earliest claimed: 2017-11-17 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget Lm Ericsson (Publ) - Inventors: Torgny Palenius; Magnus Sandgren; Magnus Larsson; Muhammad Kazmi; Robert Baldemair; Henning Wiemann - Web page: https://patentgrep.com/patent/US12598562B2 ## CPC - H04W 56/0005: {synchronizing of arrival of multiple uplinks} - H04L 5/14: Two-way operation using the same type of signal, i.e. duplex - H04W 56/0045: {compensating for timing error by altering transmission time} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method performed by a wireless device for determining a timing advance (TA) offset in a new radio (NR) network is described herein along with associated network devices and systems. An exemplary method includes obtaining an indication of whether a carrier frequency of the NR network coexists with a carrier frequency of a long term evolution (LTE) network, determining, based on whether the carrier frequency of the NR network coexists with carrier frequency of the LTE network, a TA offset for uplink transmission; and transmitting an uplink transmission using the determined TA offset. ## Claims ### Claim 1 A method performed by a wireless device for determining a timing advance (TA) offset in a new radio (NR) network, the method comprising: obtaining, by broadcast signaling from a network node, an indication of whether a carrier frequency of the NR network coexists with a carrier frequency of a long term evolution (LTE) network; determining, based on the indication obtained by broadcast signalling from the network node, a TA offset for uplink transmission; and transmitting an uplink transmission using the determined TA offset. ### Claim 2 (depends on 1) The method of claim 1, wherein the TA offset depends on a duplex mode of the frequency band of the carrier frequency of the NR network that coexists with the carrier frequency of the LTE network. ### Claim 3 (depends on 1) The method of claim 1, wherein: the signaling includes an explicit TA offset value; and determining the TA offset comprises using the received explicit TA offset value. ### Claim 4 (depends on 1) The method of claim 1, wherein the carrier frequency of the NR network is not a time division duplex (TDD) network and the TA offset is equal to zero. ### Claim 5 (depends on 1) The method of claim 1, wherein the NR network is a time division duplex (TDD) network, the carrier frequency of the NR network is below a threshold value, the NR network does not coexist with an LTE network, and the TA offset is equal to a first value greater than 0. ### Claim 6 (depends on 1) The method of claim 1, wherein the NR network is a time division duplex (TDD) network, the carrier frequency of the NR network is above a threshold value, the NR network does not coexist with an LTE network, and the TA offset is equal to a second value greater than 0. ### Claim 7 (depends on 1) The method of claim 1, wherein the NR network is a time division duplex (TDD) network, the carrier frequency of the NR network is above a threshold value, the NR network coexists with an LTE network, and the TA offset is equal to a third value greater than 0. ### Claim 8 (depends on 1) The method of claim 1, wherein the uplink transmission is a random access to a cell on the carrier frequency of the NR network. ### Claim 9 (depends on 1) The method of claim 1, wherein the TA offset relates uplink transmission timing with respect to downlink transmission timing in a cell belonging to the carrier frequency of the NR network. ### Claim 10 A method performed by a network node for signaling a timing advance (TA) offset to a wireless device in a new radio (NR) network, the method comprising: sending, in broadcast signalling, an indication of whether the carrier frequency of the NR network coexists with a carrier frequency of a long term evolution (LTE) network, which the wireless device uses to determine a timing advance (TA) offset for a carrier frequency of the NR network to the wireless device; and receiving an uplink transmission sent by the wireless device using the TA offset. ### Claim 11 (depends on 10) The method of claim 10, wherein the TA offset depends on a duplex mode of the frequency band of the carrier frequency of the NR network that coexists with the carrier frequency of the LTE network. ### Claim 12 (depends on 11) The method of claim 11, wherein the duplex mode is one of: a frequency division duplex (FDD) and a time division duplex (TDD). ### Claim 13 (depends on 10) The method of claim 10, wherein the indication of the timing offset comprises an explicit indication of an amount of time. ### Claim 14 (depends on 13) The method of claim 13, wherein the NR network is not a time division duplex (TDD) network and the TA offset is equal to zero. ### Claim 15 (depends on 13) The method of claim 13, wherein the NR network is a time division duplex (TDD) network, the carrier frequency of the NR network is below a threshold value, the NR network does not coexist with an LTE network, and the TA offset is equal to a first value greater than 0. ### Claim 16 (depends on 10) The method of claim 10, wherein the indication of the timing offset comprises an indication of whether the carrier frequency of the NR network coexists with an LTE network. ### Claim 17 (depends on 10) The method of claim 10, wherein the uplink transmission is a random access to a cell on the carrier frequency of the NR network. ### Claim 18 (depends on 10) The method of claim 10, wherein the TA offset relates uplink transmission timing with respect to downlink transmission timing in a cell belonging to the carrier frequency of the NR network. ### Claim 19 A wireless device for determining a timing advance (TA) offset in a new radio (NR) network, the wireless device comprising: processing circuitry configured to perform operations comprising: obtaining, via broadcast signaling from a network node, an indication of whether the NR network is a time division duplex (TDD) network, a carrier frequency of the NR network, and whether the NR network coexists with a long term evolution (LTE) network, determining, based on indication, a TA offset for uplink transmission, and transmitting an uplink transmission using the determined TA offset; and power supply circuitry configured to supply power to the wireless device.