# US 2019/0174496 A1 · Ul scheduling timing in tdd with 1 ms tti and reduced processing time > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174496 A1 - Document ID: US20190174496A1 - Status: Published application - Kind: A1 - Application number: 16/325,005 - Filed: 2018-08-10 - Published: 2019-06-06 - Earliest claimed: 2016-08-12 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget Lm Ericsson (Publ) - Inventors: Jingya Li; Laetitia Falconetti; Daniel Chen Larsson - Web page: https://patentgrep.com/patent/US20190174496A1 ## CPC - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/1268: of uplink data flows - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Systems and methods are disclosed for determining and utilizing uplink scheduling timing for reduced processing time. In some embodiments, a method of operation of a wireless device in a cellular communications network comprises receiving an uplink grant in a Transmission Time Interval (TTI) n, determining an uplink scheduling timing l based on a configured Time Division Duplexing (TDD) uplink/downlink configuration, and transmitting, in a TTI n+I, an uplink transmission in accordance with the uplink grant received in the TTI n. The uplink scheduling timing I is a number of TTIs that is larger than or equal to a predefined minimum uplink scheduling timing value such that n+I is an uplink TTI and the predefined minimum uplink scheduling timing value is 2 or 3. ## Claims ### Claim 1 A method of operation of a wireless device in a cellular communications network, comprising: receiving an uplink grant in a Transmission Time Interval, TTI, n; determining an uplink scheduling timing l based on a configured Time Division Duplexing, TDD, uplink/downlink configuration; and transmitting, in a TTI n+l, an uplink transmission in accordance with the uplink grant received in the TTI n; wherein the uplink scheduling timing l is a number of TTIs that is larger than or equal to a predefined minimum uplink scheduling timing value such that n+l is an uplink TTI and the predefined minimum uplink scheduling timing value is 2 or 3. ### Claim 2 (depends on 1) The method of claim 1 wherein the uplink scheduling timing l is a smallest integer number of TTIs that is larger than or equal to a predefined minimum uplink scheduling timing value such that n+l is an uplink TTI and the predefined minimum uplink scheduling timing value is 2 or 3. ### Claim 3 (depends on 1) The method of claim 1 wherein the uplink grant schedules multiple uplink TTIs for the same wireless device. ### Claim 4 (depends on 1) The method of claim 1 wherein the uplink grant comprises an indication of one or more uplink TTIs for which the uplink grant is valid. ### Claim 5 (depends on 1) The method of claim 1 wherein an uplink part of special subframes can be used for uplink data transmission, and determining the uplink scheduling timing l comprises determining the uplink scheduling timing l in such a manner that the uplink part of the special subframes are treated as uplink TTIs. ### Claim 6 (depends on 1) The method of claim 1 wherein determining the uplink scheduling timing l comprises determining the uplink scheduling timing l in such a manner that the uplink part of the special subframes are not treated as uplink TTIs. ### Claim at position 7 7-15. (canceled) ### Claim 16 A wireless device for a cellular communications network, comprising: at least one transceiver; at least one processor; and memory comprising instructions executable by the at least one processor whereby the wireless device is operable to: receive an uplink grant in a Transmission Time Interval, TTI, n; determine an uplink scheduling timing l based on a configured Time Division Duplexing, TDD, uplink/downlink configuration; and transmit, in a TTI n+l, an uplink transmission in accordance with the uplink grant received in the TTI n; wherein the uplink scheduling timing l is a number of TTIs that is larger than or equal to a predefined minimum uplink scheduling timing value such that n+l is an uplink TTI and the predefined minimum uplink scheduling timing value is 2 or 3. ### Claim 17 (canceled) ### Claim 18 A method of operation of a radio access node in a cellular communications network, comprising: transmitting an uplink grant to a wireless device in a Transmission Time Interval, TTI, n; and receiving, in a TTI n+l, an uplink transmission from the wireless device in accordance with the uplink grant transmitted to the wireless device in the TTI n, where l is an uplink scheduling timing l and is a function of a configured Time Division Duplexing, TDD, uplink/downlink configuration; wherein the uplink scheduling timing l is a number of TTIs that is larger than or equal to a predefined minimum uplink scheduling timing value such that n+l is an uplink TTI and the predefined minimum uplink scheduling timing value is 2 or 3. ### Claim 19 (depends on 18) The method of claim 18 wherein the uplink scheduling timing l is a smallest integer number of TTIs that is larger than or equal to a predefined minimum uplink scheduling timing value such that n+l is an uplink TTI and the predefined minimum uplink scheduling timing value is 2 or 3. ### Claim 20 (depends on 18) The method of claim 18 wherein the uplink grant schedules multiple uplink TTIs for the same wireless device. ### Claim 21 (depends on 18) The method of claim 18 wherein the uplink grant comprises an indication of one or more uplink TTIs for which the uplink grant is valid. ### Claim 22 (depends on 18) The method of claim 18 wherein an uplink part of special subframes can be used for uplink data transmission, and the uplink scheduling timing l is determined in such a manner that the uplink part of the special subframes are treated as uplink TTIs. ### Claim 23 (depends on 18) The method of claim 18 wherein the uplink scheduling timing l is determined in such a manner that the uplink part of the special subframes are not treated as uplink TTIs. ### Claim at position 16 24-32. (canceled) ### Claim 33 A radio access node for a cellular communications network, comprising: at least one transmitter and at least one receiver; at least one processor; and memory comprising instructions executable by the at least one processor whereby the radio access node is operable to: transmit an uplink grant to a wireless device in a Transmission Time Interval, TTI, n; and receive, in a TTI n+l, an uplink transmission from the wireless device in accordance with the uplink grant transmitted to the wireless device in the TTI n, where l is an uplink scheduling timing and is a function of a configured Time Division Duplexing, TDD, uplink/downlink configuration; wherein the uplink scheduling timing l is a smallest integer number of TTIs that is larger than or equal to a predefined minimum uplink scheduling timing value such that n+l is an uplink TTI and the predefined minimum uplink scheduling timing value is 2 or 3. ### Claim at position 18 34-56. (canceled) ### Claim 57 (depends on 16) The wireless device of claim 16 wherein the uplink scheduling timing l is a smallest integer number of TTIs that is larger than or equal to a predefined minimum uplink scheduling timing value such that n+l is an uplink TTI and the predefined minimum uplink scheduling timing value is 2 or 3. ### Claim 58 (depends on 16) The wireless device of claim 16 wherein the uplink grant schedules multiple uplink TTIs for the same wireless device. ### Claim 59 (depends on 16) The wireless device of claim 16 wherein the uplink grant comprises an indication of one or more uplink TTIs for which the uplink grant is valid. ### Claim 60 (depends on 16) The wireless device of any one of claim 16 wherein an uplink part of special subframes can be used for uplink data transmission, and determining the uplink scheduling timing l comprises determining the uplink scheduling timing l in such a manner that the uplink part of the special subframes are treated as uplink TTIs. ### Claim 61 (depends on 16) The wireless device of claim 16 wherein determining the uplink scheduling timing l comprises determining the uplink scheduling timing l in such a manner that the uplink part of the special subframes are not treated as uplink TTIs. ### Claim 62 (depends on 16) The wireless device of claim 16 wherein the configured TDD uplink/downlink configuration is Long Term Evolution, LTE, TDD uplink/downlink configuration 1, and determining the uplink scheduling timing l comprises determining the uplink scheduling timing l such that: the uplink scheduling timing l is 3 if n=0; the uplink scheduling timing l is 5 if n=1 and if UpPTS contains PUSCH; the uplink scheduling timing l is 3 if n=4; the uplink scheduling timing l is 3 if n=5; the uplink scheduling timing l is 5 if n=6 and if UpPTS contains PUSCH; and the uplink scheduling timing l is 3 if n=9. ### Claim 63 (depends on 16) The wireless device of claim 16 wherein the configured TDD uplink/downlink configuration is Long Term Evolution, LTE, TDD uplink/downlink configuration 2, and determining the uplink scheduling timing l comprises determining the uplink scheduling timing l such that: the uplink scheduling timing l is 3 if n=3 and if UpPTS contains PUSCH; the uplink scheduling timing l is 3 if n=4; the uplink scheduling timing l is 3 if n=8 and if UpPTS contains PUSCH; and the uplink scheduling timing l is 3 if n=9. ### Claim 64 (depends on 16) The wireless device of claim 16 wherein the configured TDD uplink/downlink configuration is Long Term Evolution, LTE, TDD uplink/downlink configuration 3, and determining the uplink scheduling timing l comprises determining the uplink scheduling timing l such that: the uplink scheduling timing l is 3 if n=0; the uplink scheduling timing l is 3 if n=1; the uplink scheduling timing l is 3 if n=8 and if UpPTS contains PUSCH; and the uplink scheduling timing l is 3 if n=9. ### Claim 65 (depends on 16) The wireless device of claim 16 wherein the configured TDD uplink/downlink configuration is Long Term Evolution, LTE, TDD uplink/downlink configuration 4, and determining the uplink scheduling timing l comprises determining the uplink scheduling timing l such that: the uplink scheduling timing l is 3 if n=0; the uplink scheduling timing l is 3 if n=8 and if UpPTS contains PUSCH; and the uplink scheduling timing l is 3 if n=9. ### Claim 66 (depends on 16) The wireless device of claim 16 wherein the configured TDD uplink/downlink configuration is Long Term Evolution, LTE, TDD uplink/downlink configuration 5, and determining the uplink scheduling timing l comprises determining the uplink scheduling timing l such that: the uplink scheduling timing l is 3 if n=8 and if UpPTS contains PUSCH; and the uplink scheduling timing l is 3 if n=9. ### Claim 67 (depends on 16) The wireless device of claim 16 wherein determining the uplink scheduling timing l comprises determining the uplink scheduling timing l based on the configured TDD uplink/downlink configuration and an uplink index comprises the uplink grant received in the TTI n. ### Claim 68 (depends on 16) The wireless device of claim 16 wherein the TTI n and the TTI n+l are 1 millisecond TTIs. ### Claim 69 (depends on 33) The radio access node of claim 33 wherein the uplink scheduling timing l is a smallest integer number of TTIs that is larger than or equal to a predefined minimum uplink scheduling timing value such that n+l is an uplink TTI and the predefined minimum uplink scheduling timing value is 2 or 3. ### Claim 70 (depends on 33) The radio access node of claim 33 wherein the uplink grant schedules multiple uplink TTIs for the same wireless device. ### Claim 71 (depends on 33) The radio access node of claim 33 wherein the uplink grant comprises an indication of one or more uplink TTIs for which the uplink grant is valid. ### Claim 72 (depends on 33) The radio access node of claim 33 wherein an uplink part of special subframes can be used for uplink data transmission, and the uplink scheduling timing l is determined in such a manner that the uplink part of the special subframes are treated as uplink TTIs. ### Claim 73 (depends on 33) The radio access node of claim 33 wherein the uplink scheduling timing l is determined in such a manner that the uplink part of the special subframes are not treated as uplink TTIs. ### Claim 74 (depends on 33) The radio access node of claim 33 wherein the configured TDD uplink/downlink configuration is Long Term Evolution, LTE, TDD uplink/downlink configuration 1, and: the uplink scheduling timing l is 3 if n=0; the uplink scheduling timing l is 5 if n=1 and if UpPTS contains PUSCH; the uplink scheduling timing l is 3 if n=4; the uplink scheduling timing l is 3 if n=5; the uplink scheduling timing l is 5 if n=6 and if UpPTS contains PUSCH; and the uplink scheduling timing l is 3 if n=9. ### Claim 75 (depends on 33) The radio access node of claim 33 wherein the configured TDD uplink/downlink configuration is Long Term Evolution, LTE, TDD uplink/downlink configuration 2, and: the uplink scheduling timing l is 3 if n=3 and if UpPTS contains PUSCH; the uplink scheduling timing l is 3 if n=4; the uplink scheduling timing l is 3 if n=8 and if UpPTS contains PUSCH; and the uplink scheduling timing l is 3 if n=9. ### Claim 76 (depends on 33) The radio access node of claim 33 wherein the configured TDD uplink/downlink configuration is Long Term Evolution, LTE, TDD uplink/downlink configuration 3, and: the uplink scheduling timing l is 3 if n=0; the uplink scheduling timing l is 3 if n=1; the uplink scheduling timing l is 3 if n=8 and if UpPTS contains PUSCH; and the uplink scheduling timing l is 3 if n=9. ### Claim 77 (depends on 33) The radio access node of claim 33 wherein the configured TDD uplink/downlink configuration is Long Term Evolution, LTE, TDD uplink/downlink configuration 4, and: the uplink scheduling timing l is 3 if n=0; the uplink scheduling timing l is 3 if n=8 and if UpPTS contains PUSCH; and the uplink scheduling timing l is 3 if n=9. ### Claim 78 (depends on 33) The radio access node of claim 33 wherein the configured TDD uplink/downlink configuration is Long Term Evolution, LTE, TDD uplink/downlink configuration 5, and: the uplink scheduling timing l is 3 if n=8 and if UpPTS contains PUSCH; and the uplink scheduling timing l is 3 if n=9. ### Claim 79 (depends on 33) The radio access node of claim 33 wherein the uplink scheduling timing l is determined based on the configured TDD uplink/downlink configuration and an uplink index comprised in the uplink grant in the TTI n. ### Claim 80 (depends on 33) The radio access node of claim 33 wherein the TTI n and the TTI n+l are 1 millisecond TTIs.