Efficient srs resource indication methods

A wireless device for facilitating communications in a wireless communication network by obtaining an indication of reference signal resources to be used, the wireless device comprising:

• a memory containing computer readable instructions;
• and
• processing circuitry configured to execute the computer readable instructions, whereby the wireless device is operable to:
• receive signaling that configures the wireless device with a plurality of reference signal resource groups, each group comprising a plurality of reference signal resources;
• receive an indication, in a control channel, of a selection of reference signal resources to be used, wherein each of the plurality of reference signal resources to be used is selected from a different one of the plurality of reference signal resource groups such that reference signal resources belonging to the same reference signal resource group are not selected for simultaneous use;
• and
• transmit a reference signal to a network node in the network using the indicated selection of reference signal resources.

A method in a network node, of configuring and indicating use of reference signal transmission settings in a wireless device operable in a wireless communication network, the method comprising:

• transmitting signaling configuring the wireless device with a plurality of reference signal resource groups, each group comprising a plurality of reference signal resources;
• and
• transmitting an indication, in a control channel, of a selection of reference signal resources to be used, wherein the network node selects each of the plurality of reference signal resources to be used from a different one of the plurality of reference signal resource groups such that reference signal resources belonging to the same reference signal resource group are not selected for simultaneous use;
• and
• receiving a reference signal from the wireless device using the indicated selection of reference signal resources.