A network element comprising means for: configuring and transmitting a first identifier to a first user equipment; configuring and indicating a second identifier to the first user equipment; configuring and indicating a third identifier to the first user equipment; and applying the first identifier in a coding process of a physical downlink control channel of the first user equipment; wherein: the first identifier is used for identifying a recipient of a physical downlink control channel and for a decoding process at the first user equipment of the physical downlink control channel; the second identifier is for scrambling a physical downlink shared channel of the first user equipment at the network element, descrambling the physical downlink shared channel of the first user equipment at the first user equipment, and descrambling the physical downlink shared channel of the first user equipment at a second user equipment; the first identifier is different from the second identifier; and the third identifier is for scrambling a physical downlink shared channel of the second user equipment at the network element, descrambling the physical downlink shared channel of the second user equipment at the second user equipment, and descrambling the physical downlink shared channel of the second user equipment at the first user equipment, to cancel interference of a transmission of the physical downlink shared channel of the second user equipment to the second user equipment to reception of the physical downlink shared channel of the first user equipment at the first user equipment. configuring and transmitting a first identifier to a first user equipment; configuring and indicating a second identifier to the first user equipment; configuring and indicating a third identifier to the first user equipment; and applying the first identifier in a coding process of a physical downlink control channel of the first user equipment; wherein: the first identifier is used for identifying a recipient of a physical downlink control channel and for a decoding process at the first user equipment of the physical downlink control channel; the second identifier is for scrambling a physical downlink shared channel of the first user equipment at the network element, descrambling the physical downlink shared channel of the first user equipment at the first user equipment, and descrambling the physical downlink shared channel of the first user equipment at a second user equipment; the first identifier is different from the second identifier; and the third identifier is for scrambling a physical downlink shared channel of the second user equipment at the network element, descrambling the physical downlink shared channel of the second user equipment at the second user equipment, and descrambling the physical downlink shared channel of the second user equipment at the first user equipment, to cancel interference of a transmission of the physical downlink shared channel of the second user equipment to the second user equipment to reception of the physical downlink shared channel of the first user equipment at the first user equipment. the first identifier is used for identifying a recipient of a physical downlink control channel and for a decoding process at the first user equipment of the physical downlink control channel; the second identifier is for scrambling a physical downlink shared channel of the first user equipment at the network element, descrambling the physical downlink shared channel of the first user equipment at the first user equipment, and descrambling the physical downlink shared channel of the first user equipment at a second user equipment; the first identifier is different from the second identifier; and the third identifier is for scrambling a physical downlink shared channel of the second user equipment at the network element, descrambling the physical downlink shared channel of the second user equipment at the second user equipment, and descrambling the physical downlink shared channel of the second user equipment at the first user equipment, to cancel interference of a transmission of the physical downlink shared channel of the second user equipment to the second user equipment to reception of the physical downlink shared channel of the first user equipment at the first user equipment.