Reference signaling for radio access networks

A radio network node for a radio access network, the radio network node being configured to:

• transmit reference signaling indicating an identity associated to the network node involved in BS-to-BS interference, the reference signaling having a signal structure including at least one differentiable connection between at least one pair of adjacent resource elements in a time domain covering a first symbol that repeats in a time domain, a part of the first symbol being appended to the first symbol either as a prefix or a suffix such that the first symbol and a repeated succeeding symbol have a differentiable connection in the time domain at a symbol border between the first symbol and the repeated succeeding symbol, the first symbol and the repeated succeeding symbol being mapped to a pair of adjacent resource elements in the time-domain.

A method of operating a receiving network node in a radio access network, the method comprising:

• receiving, by the receiving network node, reference signaling from a second network node involved in BS-to-BS interference, the reference signaling indicating an identity associated to the second network node, the reference signaling having a signal structure including at least one differentiable connection between at least one pair of adjacent resource elements in a time domain covering a first symbol that repeats in a time domain, a part of the first symbol being appended to the first symbol either as a prefix or a suffix such that the first symbol and a repeated succeeding symbol have a differentiable connection in the time domain at a symbol border between the first symbol and the repeated succeeding symbol, the first symbol and the repeated succeeding symbol being mapped to a pair of adjacent resource elements in the time-domain.

A receiving network node for a radio access network, the receiving node being configured to:

• receive reference signaling from a second network node involved in BS-to-BS interference, the reference signaling indicating an identity associated to the second network node, the reference signaling having a signal structure including at least one differentiable connection between at least one pair of adjacent resource elements in a time domain covering a first symbol that repeats in a time domain, a part of the first symbol being appended to the first symbol either as a prefix or a suffix such that the first symbol and a repeated succeeding symbol have a differentiable connection in the time domain at a symbol border between the first symbol and the repeated succeeding symbol, the first symbol and the repeated succeeding symbol being mapped to a pair of adjacent resource elements in the time-domain.

A non-transitory computer storage medium storing executable program instructions configured to cause processing circuitry to at least one of control and perform a method of operating a radio network node for a radio access network, the method comprising:

• transmitting reference signaling indicating an identity associated to the network node involved in BS-to-BS interference, the reference signaling having a signal structure including at least one differentiable connection between at least one pair of adjacent resource elements in a time domain covering a first symbol that repeats in a time domain, a part of the first symbol being appended to the first symbol either as a prefix or a suffix such that the first symbol and a repeated succeeding symbol have a differentiable connection in the time domain at a symbol border between the first symbol and the repeated succeeding symbol, the first symbol and the repeated succeeding symbol being mapped to a pair of adjacent resource elements in the time-domain.