Beam change

An apparatus, comprising:

• at least one processor;
• and
• at least one memory including computer program code,
• the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to:
• receive, by a user equipment from an access point in a wireless communications network, a downlink control information message;
• and
• in response to
• the message indicating a physical uplink control channel feedback resource and comprising a beam change indication wherein no medium access control, MAC, layer data is granted, or
• the message indicating a downlink grant, wherein the downlink grant is decoded by the user equipment to detect a beam change indication MAC control element transmitted by the network, and no channel state information, CSI, -feedback is scheduled for the physical uplink control channel feedback resource,
• echo a new beam index by the user equipment in the physical uplink control channel feedback resource.

A method comprising:

• receiving, by a user equipment from an access point in a wireless communications network, a downlink control information message;
• and
• in response to
• the message indicating a physical uplink control channel feedback resource and comprising a beam change indication wherein no medium access control, MAC, layer data is granted, or
• the message indicating a downlink grant, wherein the downlink grant is decoded by the user equipment to detect a beam change indication MAC control element transmitted by the network, and no channel state information, CSI, -feedback is scheduled for the physical uplink control channel feedback resource,
• echoing a new beam index by the user equipment in the physical uplink control channel feedback resource.

A non-transitory computer readable medium comprising program instructions for causing an apparatus to perform at least the following:

• receiving, by a user equipment from an access point in a wireless communications network, a downlink control information message;
• and
• in response to
• the message indicating a physical uplink control channel feedback resource and comprising a beam change indication wherein no medium access control, MAC, layer data is granted, or
• the message indicating a downlink grant, wherein the downlink grant is decoded by the user equipment to detect a beam change indication MAC control element transmitted by the network, and no channel state information, CSI, -feedback is scheduled for the physical uplink control channel feedback resource,
• echoing a new beam index by the user equipment in the physical uplink control channel feedback resource.