Method and apparatus for performing radio-resource-management measurements

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, with the at least one processor, to cause the apparatus at least to
• receive mapping information from at least one network node, wherein the mapping information indicates restrictions with respect to antenna ports to be used for measurements on each of one or more channel-state-information-reference-signal resources transmitted by the at least one network node;
• transmit a message to a user equipment, wherein the message configures the user equipment to measure channel-state-information-reference-signal-received power from at least one of said one or more channel-state-information-reference-signal resources;
• and
• receive a reporting from the user equipment.

A method, comprising:

• receiving, by a user equipment, a message from a first network node, wherein the message indicates restrictions with respect to antenna ports to be used for measurements on each of one or more channel-state-information-reference-signal resources transmitted by at least one second network node, and wherein the message configures the user equipment to measure channel-state-information-reference-signal-received power from at least one of said one or more channel-state-information-reference-signal resources;
• measuring channel-state-information-reference-signal-received-power based on the received message;
• and
• reporting the measurement results to the first network node.

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, with the at least one processor, to cause a user equipment at least to:
• receive a message from a first network node, wherein the message indicates restrictions with respect to antenna ports to be used for measurements on each of one or more channel-state-information-reference-signal resources transmitted by at least one second network node, and wherein the message configures the user equipment to measure channel-state-information-reference-signal-received power from at least one of said one or more channel-state-information-reference-signal resources;
• measure channel-state-information-reference-signal-received-power based on the received message;
• and
• report the measurement results to the first network node.