A communication device for reporting control information, the communication device comprising: a storage unit for storing instructions of: receiving a first period for transmitting first antenna array dimension precoding information from a network; receiving a second period for transmitting second antenna array dimension precoding information from the network, wherein the first period is different from the second period, and the first period and the second period are received in a control signal; transmitting the first antenna array dimension precoding information to the network according to the first period and a first time instant; transmitting the second antenna array dimension precoding information to the network according to the second period and a second time instant, wherein the first time instant and the second time instant are different; receiving a third period for transmitting the first antenna array dimension precoding information from the network; and transmitting the first antenna array dimension precoding information to the network according to the third period; and a processing means, coupled to the storage unit, configured to execute the instructions stored in the storage unit. a storage unit for storing instructions of: receiving a first period for transmitting first antenna array dimension precoding information from a network; receiving a second period for transmitting second antenna array dimension precoding information from the network, wherein the first period is different from the second period, and the first period and the second period are received in a control signal; transmitting the first antenna array dimension precoding information to the network according to the first period and a first time instant; transmitting the second antenna array dimension precoding information to the network according to the second period and a second time instant, wherein the first time instant and the second time instant are different; receiving a third period for transmitting the first antenna array dimension precoding information from the network; and transmitting the first antenna array dimension precoding information to the network according to the third period; and receiving a first period for transmitting first antenna array dimension precoding information from a network; receiving a second period for transmitting second antenna array dimension precoding information from the network, wherein the first period is different from the second period, and the first period and the second period are received in a control signal; transmitting the first antenna array dimension precoding information to the network according to the first period and a first time instant; transmitting the second antenna array dimension precoding information to the network according to the second period and a second time instant, wherein the first time instant and the second time instant are different; receiving a third period for transmitting the first antenna array dimension precoding information from the network; and transmitting the first antenna array dimension precoding information to the network according to the third period; and a processing means, coupled to the storage unit, configured to execute the instructions stored in the storage unit.