Transmission mode with user equipment independent physical downlink shared channel scrambling for inter-cell and intra-cell PDSCH-to-PDSCH interference cancellation

An apparatus, comprising:

• at least one processor;
• and
• at least one memory including computer program code,
• wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to
• receive, from a network element, a first identifier;
• apply the first identifier in a decoding process at the apparatus of a physical downlink control channel;
• receive, from the network element, a second identifier and a third identifier,
• wherein the second identifier is for at least one of scrambling a physical downlink shared channel of the apparatus at the network element, or descrambling the physical downlink shared channel of the apparatus at a second user equipment;
• the third identifier is for at least one of scrambling a physical downlink shared channel of the second user equipment at the network element, or descrambling the physical downlink shared channel of the second user equipment at the second user equipment;
• descramble, based on the second identifier, the physical downlink shared channel of the apparatus;
• descramble, based on the third identifier, the physical downlink shared channel of the second user equipment;
• wherein the first identifier is different from the second identifier;
• and
• perform cancellation of interference caused to the reception of the physical downlink shared channel of the apparatus from transmission of the physical downlink shared channel of the second user equipment to the second user equipment.

A method, comprising:

• receiving, at a first user equipment, a first identifier from a network element;
• applying the first identifier in a decoding process at the first user equipment of a physical downlink control channel;
• receiving, from the network element, a second identifier and a third identifier,
• wherein the second identifier is for at least one of scrambling a physical downlink shared channel of the first user equipment, or descrambling the physical downlink shared channel of the first user equipment at a second user equipment;
• the third identifier is for at least one of scrambling a physical downlink shared channel of the second user equipment at the network element, or descrambling the physical downlink shared channel of the second user equipment at the second user equipment;
• descrambling, based on the second identifier, the physical downlink shared channel of the first user equipment at the first user equipment;
• descrambling, based on the third identifier, the physical downlink shared channel of the second user equipment at the first user equipment,
• wherein the first identifier is different from the second identifier;
• and
• performing cancellation of interference caused to the reception of the physical downlink shared channel of the first user equipment at the first user equipment from transmission of the physical downlink shared channel of the second user equipment to the second user equipment.