Resource coordination for integrated access and backhaul

Abstract

The described technology is generally directed towards dynamic resource coordination that supports multi-hop based relaying for integrated access and backhaul (IAB) in New Radio (5G). Described is a technology in which an IAB node and a serving parent node use wireless signaling to dynamically adapt downlink and uplink resources used for access and backhaul links. An IAB node receives scheduling data from a parent node, configures a frame structure comprising mobile termination function subframes and distributed unit component subframes, and communicates data based on the frame structure. The parent node explicitly or implicitly indicates that a portion of the scheduling data is adaptable, e.g., sends a dynamic frame structure coordination message. In response, the IAB node can adapt the frame structure into a modified frame structure and can communicate further data based on the modified frame structure.

What is claimed is: 
     
         1 . A method, comprising:
 detecting, by an integrated access and backhaul device comprising a processor, that a parent node device has not scheduled a resource allocation for the integrated access and backhaul device at a defined scheduling time; and   in response to the detecting, determining, by the integrated access and backhaul device, that an implicit indication has been received, from the parent node device, that a frame structure associated with a previously scheduled resource allocation for the integrated access and backhaul device by the parent node device is able to be modified by the integrated access and backhaul device into a modified frame structure for communications by the integrated access and backhaul device.   
     
     
         2 . The method of  claim 1 , further comprising modifying, by the integrated access and backhaul device, the frame structure to adapt downlink resources for use by the integrated access and backhaul device. 
     
     
         3 . The method of  claim 1 , further comprising modifying, by the integrated access and backhaul device, the frame structure to adapt uplink resources for use by the integrated access and backhaul device. 
     
     
         4 . The method of  claim 1 , further comprising modifying, by the integrated access and backhaul device, the frame structure into the modified frame structure for use on an access link employed by the integrated access and backhaul device. 
     
     
         5 . The method of  claim 1 , further comprising modifying, by the integrated access and backhaul device, the frame structure into the modified frame structure for use on a backhaul link employed by the integrated access and backhaul device. 
     
     
         6 . The method of  claim 1 , wherein the determining that the implicit indication has been received from the parent node device, comprises determining that the frame structure previously scheduled by the parent node device for the integrated access and backhaul device is able be modified into the modified frame structure until a next scheduled resource allocation for the integrated access and backhaul device. 
     
     
         7 . The method of  claim 1 , further comprising modifying, by the integrated access and backhaul device, the frame structure into the modified frame structure for use in a communication with a user equipment. 
     
     
         8 . An integrated access and backhaul device, comprising:
 a processor; and   a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:
 detecting that a donor node device has not scheduled a resource allocation for the integrated access and backhaul device at a defined scheduling time; and 
 in response to the detecting that the donor node device has not scheduled the resource allocation for the integrated access and backhaul device at the defined scheduling time, determining that the donor node device has provided an implicit indication that the integrated access and backhaul device is able to adapt a frame structure associated with a previously scheduled resource allocation for the integrated access and backhaul device by the donor node device into an adapted frame structure for communications by the integrated access and backhaul device. 
   
     
     
         9 . The integrated access and backhaul device of  claim 8 , wherein the operations further comprise adapting the frame structure to reallocate downlink resources for use by the integrated access and backhaul device. 
     
     
         10 . The integrated access and backhaul device of  claim 8 , wherein the operations further comprise adapting the frame structure to reallocate uplink resources for use by the integrated access and backhaul device. 
     
     
         11 . The integrated access and backhaul device of  claim 8 , wherein the operations further comprise adapting the frame structure into the adapted frame structure for use on an access link employed by the integrated access and backhaul device. 
     
     
         12 . The integrated access and backhaul device of  claim 8 , wherein the operations further comprise adapting the frame structure into the adapted frame structure for use on a backhaul link employed by the integrated access and backhaul device. 
     
     
         13 . The integrated access and backhaul device of  claim 8 , wherein the determining that the donor node device has provided the implicit indication, comprises determining that the frame structure previously scheduled by the donor node device for the integrated access and backhaul device is able to be adapted into the adapted frame structure until a next scheduled resource allocation for the integrated access and backhaul device. 
     
     
         14 . The integrated access and backhaul device of  claim 8 , wherein the integrated access and backhaul device is a first integrated access and backhaul device, and the operations further comprise adapting the frame structure into the adapted frame structure for use in a communication with a second integrated access and backhaul device. 
     
     
         15 . A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processor of an integrated access and backhaul device, facilitate performance of operations, comprising:
 detecting that a parent node device has not scheduled a resource allocation for the integrated access and backhaul device at a defined scheduling time; and   in response to the detecting, determining that the parent node device has provided an implicit indication that a frame structure associated with a previously scheduled resource allocation for the integrated access and backhaul device by the parent node device is alterable by the integrated access and backhaul device into a temporary frame structure for communications by the integrated access and backhaul device.   
     
     
         16 . The non-transitory machine-readable medium of  claim 15 , wherein the operations further comprise altering the frame structure to adapt downlink resources for use by the integrated access and backhaul device. 
     
     
         17 . The non-transitory machine-readable medium of  claim 15 , wherein the operations further comprise altering the frame structure to adapt uplink resources for use by the integrated access and backhaul device. 
     
     
         18 . The non-transitory machine-readable medium of  claim 15 , wherein the operations further comprise altering the frame structure into the temporary frame structure for use on an access link employed by the integrated access and backhaul device. 
     
     
         19 . The non-transitory machine-readable medium of  claim 15 , wherein the operations further comprise altering the frame structure into the temporary frame structure for use on a backhaul link employed by the integrated access and backhaul device. 
     
     
         20 . The non-transitory machine-readable medium of  claim 15 , wherein the determining that the parent node device has provided the implicit indication, comprises determining that the frame structure previously scheduled by the parent node device for the integrated access and backhaul device is alterable into the temporary frame structure until a next scheduled resource allocation for the integrated access and backhaul device.