In wireless communication the data is transmitted over the frequencies. For data transfer over the air we need to think about the interference .
Guard Band : In FDD different frequencies are used for transmitting and receiving the data . Frequency gap is required between the uplink and downlink frequencies to avoid the interference between the uplink and downlink transmission , this frequency gap is known as the guard band i.e the frequency band between the uplink and downlink frequency to avoid interference is guard band.
Guard Time : in TDD , The data transmits as well as receives at same frequency but not at same time . For one particular period of time the device only receives the data and for another period of time it only transmits the data . The time gap between the transmitting time and receiving time is guard time i.e as soon as the device stop transmitting the data it waits for some time (Guard time) before it starts receiving the data.
Guard Band : In FDD different frequencies are used for transmitting and receiving the data . Frequency gap is required between the uplink and downlink frequencies to avoid the interference between the uplink and downlink transmission , this frequency gap is known as the guard band i.e the frequency band between the uplink and downlink frequency to avoid interference is guard band.
Guard Time : in TDD , The data transmits as well as receives at same frequency but not at same time . For one particular period of time the device only receives the data and for another period of time it only transmits the data . The time gap between the transmitting time and receiving time is guard time i.e as soon as the device stop transmitting the data it waits for some time (Guard time) before it starts receiving the data.
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