Power control between integrated access and backhaul (IAB) nodes
A method, system and apparatus are disclosed for power control between integrated access and backhaul (IAB) nodes. In one embodiment, a first node is provided. The first node includes processing circuitry configured to transmit a power control request to a parent, integrated access and backhaul, IAB, node where the power control request is configured to request an adjustment of a transmission power of the parent IAB node, receive a power control response from the parent IAB node, and perform at least one action associated with a second node based at least in part on the power control response.
1 . A first node comprising:
processing circuitry configured to:
transmit a power control request to a parent, integrated access and backhaul, IAB, node, the power control request configured to request an adjustment of a transmission power of the parent IAB node;
receive a power control response from the parent IAB node; and
perform at least one action associated with a second node based at least in part on the power control response, the at least one action comprising:
at least temporarily pausing a scheduling for a wireless device that is outside of a distance threshold; and
scheduling a wireless device that is within the distance threshold.
2 . A method implemented by a first node, the method comprising:
transmitting a power control request to a parent, integrated access and backhaul, IAB, node, the power control request configured to request an adjustment of a transmission power of the parent IAB node;
receiving a power control response from the parent IAB node; and
performing at least one action associated with a second node based at least in part on the power control response, the at least one action comprising:
at least temporarily pausing a scheduling for a wireless device that is outside of a distance threshold; and
scheduling a wireless device that is within the distance threshold.
3 . The method of claim 2 , wherein the at least one action includes scheduling the second node simultaneously with a scheduling of the first node.
4 . The method of claim 3 , wherein the power control response is an acknowledgment that indicates the transmission power of the parent IAB node is being adjusted.
5 . The method of claim 2 , wherein the at least one action includes adjusting at least one parameter of transmission of the second node.
6 . The method of claim 5 , wherein the adjusting of the at least one parameter of transmission of the second node includes at least one of:
adjusting an uplink scheduling modulation and coding scheme, MCS, of the second node;
adjusting a transmit power of the second node;
adjusting a resource allocation assigned to the second node; and
setting a multiplexing scheme of the second node with respect to resources allocated to the first node by the parent IAB node.
7 . The method of claim 2 , wherein the at least one action includes adjusting at least one parameter of transmission of the first node.
8 . The method of claim 7 , wherein the adjusting of the at least one parameter of transmission of the first node includes at least one of:
adjusting precoder weights of the first node to downscale a required dynamic range of the parent IAB node;
adjusting a beam direction to avoid receiving a maximum transmission power from the parent IAB node; and
adjusting an availability indicator to the second node.
9 . The method of claim 5 , wherein the power control response is a negative acknowledgment that indicates the transmission power of the parent IAB node is not being adjusted.
10 . The method of claim 2 , wherein the second node is one of a child IAB node and wireless device.
11 . The method of claim 2 , wherein the first node is one of an IAB node and wireless device.
12 . A parent, integrated access and backhaul, IAB, node comprising:
processing circuitry configured to:
receive a power control request from a first node, the power control request is configured to request an adjustment of a transmission power of the parent IAB node; and
cause transmission of a power control response to the first node, the power control response being a negative acknowledgment that indicates the transmission power of the parent IAB node is not being adjusted.
13 . A method implemented by a parent, integrated access and backhaul, IAB, node, the method comprising:
receiving a power control request from a first node, the power control request is configured to request an adjustment of a transmission power of the parent IAB node; and
causing transmission of a power control response to the first node, the power control response being a negative acknowledgment that indicates the transmission power of the parent IAB node is not being adjusted.
14 . The method of claim 13 , wherein the power control response is configured to at least in part cause the first node to perform at least one action associated with a second node.
15 . The method of claim 14 , wherein the at least one action includes scheduling the second node simultaneously with a scheduling of the first node.
16 . The method of claim 15 , wherein the power control response is an acknowledgment that indicates the transmission power of the parent IAB node is being adjusted.
17 . The method of claim 14 , wherein the at least one action includes adjusting at least one parameter of transmission of the second node.
18 . The method of claim 17 , wherein the adjusting of the at least one parameter of transmission of the second node includes at least one of:
adjusting an uplink scheduling modulation and coding scheme, MCS, of the second node;
adjusting a transmit power of the second node;
adjusting a resource allocation assigned to the second node; and
setting a multiplexing scheme of the second node with respect to resources allocated to the first node by the parent IAB node.
19 . The method of claim 14 , wherein the at least one action includes adjusting at least one parameter of transmission of the first node.