Dynamic resource allocation in wireless network
Backhaul resources may be allocated to different wireless communication links between different base stations, and local redistribution of resources among base stations may be utilized to account for variations in signal quality and/or variations in traffic experienced by different nodes of the backhaul network. A first access node function (ANF) may determine a need for additional backhaul resources, and may transmit a request message to one or more user equipment functions (UEFs) for additional backhaul resources. A UEF that receives the request message may forward the request to an associated second ANF. The second ANF, if it has backhaul resources available that the first ANF can use, may send a response to the first ANF, via the associated UEF, and the first ANF may use the additional resources that were originally allocated to the second ANF.
1 . An apparatus for wireless communication at a first access node in an integrated access and backhaul (IAB) network, comprising:
one or more memories; and
one or more processors coupled with the one or more memories and configured to cause the apparatus to:
receive, via first signaling, a plurality of resources that are pre-allocated among a plurality of access nodes in the IAB network, wherein the first access node comprises a first node function and a second node function different from the first node function; and
receive, at the first node function of the first access node and via second signaling from a second access node, an availability indication of one or more available resources for communication from the plurality of resources, wherein the one or more available resources correspond to frequency-multiplexed resources and are available for a period of time for communication with an additional node associated with the IAB network, wherein the plurality of access nodes includes the first access node and the second access node, and wherein the first signaling is different from the second signaling.
2 . The apparatus of claim 1 , wherein the plurality of resources that are pre-allocated is received via radio resource control (RRC) signaling.
3 . The apparatus of claim 1 , wherein the availability indication of the one or more available resources is received via a downlink control channel.
4 . The apparatus of claim 1 , wherein the one or more available resources further correspond to time-multiplexed resources, spatially-multiplexed resources, or a combination thereof.
5 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the apparatus to:
select at least one resource from the one or more available resources; and
transmit data using the at least one resource.
6 . The apparatus of claim 5 , wherein the one or more processors are further configured to cause the apparatus to:
select the at least one resource based at least in part on managing inter-link interference or on inter-node beam coordination.
7 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the apparatus to:
forward, from the second node function of the first access node, the availability indication to one or more other access nodes associated with the IAB network.
8 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the apparatus to:
restrict resource shifting of at least one resource from the plurality of resources that are pre-allocated.
9 . The apparatus of claim 1 , wherein the plurality of resources that are pre-allocated comprises at least one resource associated with a directional beam.
10 . The apparatus of claim 1 , wherein the availability indication of the one or more available resources is received from an access node function (ANF) of the second access node, wherein the second access node is the additional node.
11 . The apparatus of claim 1 , wherein the first node function comprises a user equipment function (UEF) and the second node function comprises an access node function (ANF).
12 . The apparatus of claim 1 , wherein the first access node comprises a first base station and the second access node comprises a second base station.
13 . A method for wireless communication at a first access node in an integrated access and backhaul (IAB) network, comprising:
receiving, by the first access node and via first signaling, a plurality of resources that are pre-allocated among a plurality of access nodes in the IAB network, wherein the first access node comprises a first node function and a second node function different from the first node function; and
receiving, at the first node function of the first access node and via second signaling from a second access node, an availability indication of one or more available resources for communication from the plurality of resources, wherein the one or more available resources correspond to frequency-multiplexed resources and are available for a period of time a for communication with an additional node associated with the IAB network, wherein the plurality of access nodes includes the first access node and the second access node, and wherein the first signaling is different from the second signaling.
14 . The method of claim 13 , wherein the availability indication comprises an indication that the one or more available resources further correspond to time-multiplexed resources, spatially-multiplexed resources, or a combination thereof.
15 . The method of claim 13 , further comprising:
selecting, based at least in part on managing inter-link interference or on inter-node beam coordination, at least one resource from the one or more available resources; and
transmitting data using the at least one resource.
16 . The method of claim 13 , further comprising:
forwarding, from the second node function of the first access node, the availability indication to one or more other access nodes associated with the IAB network.
17 . The method of claim 13 , further comprising:
restricting resource shifting of at least one resource from the plurality of resources that are pre-allocated.
18 . A non-transitory computer-readable medium storing code for wireless communication at a first access node in an integrated access and backhaul (IAB) network, the code comprising instructions executable by one or more processors to:
receive, by the first access node and via first signaling, a plurality of resources that are pre-allocated among a plurality of access nodes in the IAB network, wherein the first access node comprises a first node function and a second node function different from the first node function; and
receive, at the first node function of the first access node and via second signaling from a second access node, an availability indication of one or more available resources for communication from the plurality of resources, wherein the one or more available resources correspond to frequency-multiplexed resources and are available for a period of time for communication with an additional node associated with the IAB network, wherein the plurality of access nodes includes the first access node and the second access node, and wherein the first signaling is different from the second signaling.
19 . The non-transitory computer-readable medium of claim 18 , wherein the plurality of resources that are pre-allocated is received via radio resource control (RRC) signaling.
20 . The non-transitory computer-readable medium of claim 18 , wherein the availability indication of the one or more available resources is received via a downlink control channel.