US Patent No. 11,071,142

UPLINK TRANSMISSION METHOD BASED ON LICENSED-ASSISTED ACCESS LAA SYSTEM, AND APPARATUS


Patent No. 11,071,142
Issue Date July 20, 2021
Title Uplink Transmission Method Based On Licensed-assisted Access Laa System, And Apparatus
Inventorship Kai Xu, Shenzhen (CN)
Xiaocui Li, Beijing (CN)
Assignee HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)

Claim of US Patent No. 11,071,142


1. An uplink transmission method based on a licensed-assisted access (LAA) system, comprising:reserving, for a transmission burst transmitted on an unlicensed carrier, at least one single-carrier frequency-division multiple access (SC-FDMA) symbol in a subframe of an uplink transmission burst corresponding to the transmission burst, wherein the at least one SC-FDMA symbol is configured to allow a user equipment to access a channel using a listen-before-talk (LBT) access mechanism, wherein the at least one SC-FDMA symbol is at a position other than a start position of a first subframe of the uplink transmission burst when a channel access operation is performed before the first subframe of the uplink transmission burst, and wherein the at least one SC-FDMA symbol is at a position other than an end position of a last subframe of the uplink transmission burst when no uplink data is transmitted after the last subframe of the uplink transmission burst; and
configuring the at least one SC-FDMA symbol using higher layer configuration signaling or a physical downlink control channel by configuring a quantity of reserved SC-FDMA symbols, a position of the at least one SC-FDMA symbol in a subframe, a type of the at least one SC-FDMA symbol, or a period and an offset of the at least one SC-FDMA symbol.