The invention discloses network uplink and downlink data processing methods, electronic equipment and systems. The network downlink data processing method is applied to a data transmission network; the data transmission network comprises center node equipment and remote node equipment; the center node equipment is edge equipment of a backbone network in the data transmission network; and the remote node equipment is edge equipment of a user network in the data transmission network. The network downlink data processing method comprises the following steps that: the center node equipment performs downlink digital signal processing on a first data frame received from a network side to obtain a downlink data frame to be transmitted; and the center node equipment transmits the downlink data frame to be transmitted to the remote node equipment. According to the technical scheme, the downlink digital signal processing is performed through the center node equipment, so that a digital signal processing unit does not need to be configured in the remote node equipment for performing digital signal processing; the technical problem of complexity in operation and maintenance management in the remote node equipment in the prior art is solved; and the operation and maintenance management complexity of the remote node equipment is lowered.