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US 9,883,525 B2Granted
Method and apparatus of configuring timing of uplink transmission
AssigneeSamsung Electronics Co., Ltd.
InventorsYingyang Li, Chengjun Sun
Life of this patent
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Abstract
The present disclosure is to provide a method of configuring timing of uplink (UL) transmission, comprising, receiving, by a user equipment (UE), configuration information on carrier aggregation (CA) of at least one frequency division duplex (FDD) cell and at least one time division duplex (TDD) cell; and adjusting, by the UE, starting timing of a UL subframe in a cell participating in the CA.
Claims14
A method of configuring timing of an uplink (UL) transmission of a carrier aggregation (CA) system, the method comprising:
- receiving, by a user equipment (UE), information related to a first time advance offset for the CA system which includes both at least one frequency division duplex (FDD) cell and at least one time division duplex (TDD) cell, wherein the first time advance offset is configured by a base station (BS) for a first secondary cell (Scell);
- adjusting, by the UE, a starting timing of a UL subframe in a second Scell participating in the CA system based on a second time advance offset and the first time advance offset;
- and
- transmitting data based on the adjusted starting timing of the UL subframe,
- wherein the first Scell and the second Scell belong to a time advance group (TAG) to which a primary cell (Pcell) does not belong, and the first Scell is duplexed in a mode different from the second Scell.
2 more elements
An apparatus comprising:
- a transceiver configured to receive information related to a first time advance offset for a carrier aggregation (CA) system which includes both at least one frequency division duplex (FDD) cell and at least one time division duplex (TDD) cell, wherein the first time advance offset is configured by a base station (BS) for a first secondary cell (Scell);
- and
- a controller including a processor and a memory, wherein the controller is configured to adjust a starting timing of an uplink (UL) subframe in a second Scell participating in the CA system by using a second time advance offset and the first time advance offset,
- wherein the transceiver is configured to transmit data based on the adjusted starting timing of the UL subframe,
- wherein the first Scell and the second Scell belong to a time advance group (TAG) to which a primary cell (Pcell) does not belong, and the first Scell is duplexed in a mode different from the second Scell.
2 more elements
Dependencies are inferred from the claim text.