# US 2021/0345301 A1 · Data transmission method, user equipment, and radio access device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0345301 A1 - Document ID: US20210345301A1 - Status: Published application - Kind: A1 - Application number: 17/378,456 - Filed: 2021-07-16 - Published: 2021-11-04 - Earliest claimed: 2016-12-29 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Lifeng HAN; Jian ZHANG; Qinghai ZENG - Web page: https://patentgrep.com/patent/US20210345301A1 ## CPC - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/04: Wireless resource allocation - H04W 28/06: Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 80/02: Data link layer protocols - H04W 80/08: Upper layer protocols {(network arrangements or communication protocols for networked applications H04L67/00)} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Embodiments of this application disclose a data transmission method, where the method includes: receiving, by user equipment, first information from a radio access device, where the first information indicates different transmission classes corresponding to a plurality of logical channels; determining, by the user equipment based on the first information, a transmission format of uplink data on at least one logical channel corresponding to at least one transmission class in the different transmission classes, and determining a transmission resource in the transmission format; and sending, by the user equipment, the uplink data by using the transmission format and the transmission resource in the transmission format. In this application, different transmission resources are allocated to uplink data on logical channels LCHs of different transmission classes, so that different requirements of different uplink data can be met. ## Claims ### Claim 1 A method, comprising: sending, by a radio access device to user equipment, first information indicating a transmission class associated with a logical channel, wherein the transmission class depends on a reliability requirement and latency requirement of a service; sending, by the radio access device to the user equipment, third information indicating a transmission format associated with the transmission class and a transmission resource in the transmission format, wherein the transmission format is subcarrier spacing for orthogonal frequency division multiplexing at a physical layer; and receiving, by the radio access device from the user equipment based on the first information and the third information, uplink data on the logical channel associated with the transmission class using the transmission format associated with the transmission class and the transmission resource in the transmission format. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first information indicating different transmission classes associated with different logical channels and the different transmission classes associated with the different logical channels comprises the transmission class associated with the logical channel. ### Claim 3 (depends on 1) The method according to claim 1, wherein the step of the receiving comprises: receiving, by the radio access device from the user equipment based on the transmission class associated with the logical channel, the transmission format associated with the transmission class, the transmission resource in the transmission format and a service priority associated with the logical channel, the uplink data on the logical channel, wherein the service priority associated with logical channel is different from the transmission class associated with the logical channel. ### Claim 4 (depends on 1) The method according to claim 1, wherein the method further comprises: configuring, by the radio access device for the user equipment, different timers corresponding to different types of data packets, wherein the different types of data packets comprises key data packets and non-key data packets; wherein the received uplink data on the logical channel comprises a data packet of the different types of data packets the timer corresponding to which does not expires. ### Claim 5 (depends on 4) The method according to claim 4, wherein the key data packets are I frames of a same video service and the non-key data packets are P frames of the same video service. ### Claim 6 An apparatus, comprising: at least one processor and a memory storing instructions; wherein the instructions are executed by the at least one processor to cause the apparatus to perform the method of: sending to user equipment, first information indicating a transmission class associated with a logical channel, wherein the transmission class depends on a reliability requirement and latency requirement of a service; sending to the user equipment, third information indicating a transmission format associated with the transmission class and a transmission resource in the transmission format, wherein the transmission format is subcarrier spacing for orthogonal frequency division multiplexing at a physical layer; and receiving from the user equipment based on the first information and the third information, uplink data on the logical channel associated with the transmission class using the transmission format associated with the transmission class and the transmission resource in the transmission format. ### Claim 7 (depends on 6) The apparatus according to claim 6, wherein the first information indicating different transmission classes associated with different logical channels and the different transmission classes associated with the different logical channels comprises the transmission class associated with the logical channel. ### Claim 8 (depends on 6) The apparatus according to claim 6, wherein the step of the receiving comprises: receiving from the user equipment based on the transmission class associated with the logical channel, the transmission format associated with the transmission class, the transmission resource in the transmission format and a service priority associated with the logical channel, the uplink data on the logical channel, wherein the service priority associated with logical channel is different from the transmission class associated with the logical channel. ### Claim 9 (depends on 1) The apparatus according to claim 1, wherein the method further comprises: configuring for the user equipment, different timers corresponding to different types of data packets, wherein the different types of data packets comprises key data packets and non-key data packets; wherein the received uplink data on the logical channel comprises a data packet of the different types of data packets the timer corresponding to which does not expires. ### Claim 10 (depends on 9) The apparatus according to claim 9, wherein the key data packets are I frames of a same video service and the non-key data packets are P frames of the same video service. ### Claim 11 A method, comprising: receiving, by a user equipment from a radio access device, first information indicating a transmission class associated with a logical channel, wherein the transmission class depends on a reliability requirement and latency requirement of a service; receiving, by the user equipment from the radio access device, third information indicating a transmission format associated with the transmission class and a transmission resource in the transmission format, wherein the transmission format is subcarrier spacing for orthogonal frequency division multiplexing at a physical layer; and sending, by the user equipment to the radio access device based on the first information and the third information, uplink data on the logical channel associated with the transmission class using the transmission format associated with the transmission class and the transmission resource in the transmission format. ### Claim 12 (depends on 11) The method according to claim 11, wherein the first information indicating different transmission classes associated with different logical channels and the different transmission classes associated with the different logical channels comprises the transmission class associated with the logical channel. ### Claim 13 (depends on 11) The method according to claim 11, wherein the step of the sending comprises: sending, by the user equipment to the radio access device based on the transmission class associated with the logical channel, the transmission format associated with the transmission class, the transmission resource in the transmission format and a service priority associated with the logical channel, the uplink data on the logical channel, wherein the service priority associated with logical channel is different from the transmission class associated with the logical channel. ### Claim 14 (depends on 11) The method according to claim 11, wherein the method further comprises: receiving, by the user equipment from the radio access device, configuration of different timers corresponding to different types of data packets, wherein the different types of data packets comprises key data packets and non-key data packets; discarding, by the user equipment, a data packet of the different types of data packets the timer corresponding to which expires; wherein the sent uplink data on the logical channel comprises a data packet of the different types of data packets the timer corresponding to which does not expires. ### Claim 15 (depends on 14) The method according to claim 14, wherein the key data packets are I frames of a same video service and the non-key data packets are P frames of the same video service. ### Claim 16 An apparatus, comprising at least one processor and a memory storing instructions; wherein the instructions are executed by the at least one processor to cause the apparatus to perform the method of: receiving from a radio access device, first information indicating a transmission class associated with a logical channel, wherein the transmission class depends on a reliability requirement and latency requirement of a service; receiving from the radio access device, third information indicating a transmission format associated with the transmission class and a transmission resource in the transmission format, wherein the transmission format is subcarrier spacing for orthogonal frequency division multiplexing at a physical layer; and sending to the radio access device based on the first information and the third information, uplink data on the logical channel associated with the transmission class using the transmission format associated with the transmission class and the transmission resource in the transmission format. ### Claim 17 (depends on 16) The apparatus according to claim 16, wherein the first information indicating different transmission classes associated with different logical channels and the different transmission classes associated with the different logical channels comprises the transmission class associated with the logical channel. ### Claim 18 (depends on 16) The apparatus according to claim 16, wherein the step of the sending comprises: sending to the radio access device based on the transmission class associated with the logical channel, the transmission format associated with the transmission class, the transmission resource in the transmission format and a service priority associated with the logical channel, the uplink data on the logical channel, wherein the service priority associated with logical channel is different from the transmission class associated with the logical channel. ### Claim 19 (depends on 11) The apparatus according to claim 11, wherein the method further comprises: receiving from the radio access device, configuration of different timers corresponding to different types of data packets, wherein the different types of data packets comprises key data packets and non-key data packets; discarding a data packet of the different types of data packets the timer corresponding to which expires; wherein the sent uplink data on the logical channel comprises a data packet of the different types of data packets the timer corresponding to which does not expires. ### Claim 20 (depends on 19) The apparatus according to claim 19, wherein the key data packets are I frames of a same video service and the non-key data packets are P frames of the same video service.