Data transmission method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsDao PAN, Zefeng LIN
Life of this patent
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Abstract
Embodiments of this application disclose a data transmission method and apparatus, and relate to the communication field, to improve reliability of data transmission in a power line communication system. A master device allocates a first time-frequency resource block to a terminal device, where the first time-frequency resource block is determined based on an available frequency band locally stored in the master device, the available frequency band includes M consecutive subcarriers, each OFDM symbol in the first time-frequency resource block includes N discrete subcarriers in frequency domain, and M is greater than N; and the master device transmits data to the terminal device on the first time-frequency resource block.
Claims20
A data transmission method for power line communication, comprising:
- allocating, by a master device, a first time-frequency resource block to a terminal device, wherein the first time-frequency resource block is determined based on an available frequency band locally stored in the master device, the available frequency band comprises M consecutive subcarriers, an orthogonal frequency division multiplexing (OFDM) symbol in the first time-frequency resource block comprises N discrete subcarriers in a frequency domain, and M is greater than N;
- and
- transmitting, by the master device, data to the terminal device on the first time-frequency resource block.
A data transmission method for power line communication, comprising:
- receiving, by a terminal device, scheduling information from a master device, wherein the scheduling information comprises indication information that indicates a time-frequency resource location of a first time-frequency resource block corresponding to the terminal device, the first time-frequency resource block is determined based on an available frequency band locally stored in the master device, the available frequency band comprises M consecutive subcarriers, an orthogonal frequency division multiplexing (OFDM) symbol in the first time-frequency resource block comprises N discrete subcarriers in frequency domain, and M is greater than N;
- and
- transmitting, by the terminal device, data on the first time-frequency resource block based on the scheduling information.
A data transmission apparatus, comprising:
- a transceiver;
- and
- a processor configured to:
- allocate a first time-frequency resource block to a terminal device, wherein the first time-frequency resource block is determined based on an available frequency band locally stored in the data transmission apparatus, the available frequency band comprises M consecutive subcarriers, an orthogonal frequency division multiplexing (OFDM) symbol in the first time-frequency resource block comprises N discrete subcarriers in frequency domain, and M is greater than N;
- and
- transmit data to the terminal device on the first time-frequency resource block by using the transceiver.
Dependencies are inferred from the claim text.