Systems, Devices, and Methods for Handling Radio Link Monitoring and Radio Link Failures in Wireless Relay Networks

Abstract

A node comprising monitoring circuitry configured to monitor radio link conditions on one or multiple bandwidth parts (BWPs) of a parent node, and detecting circuitry configured to detect radio link failure (RLF) in at least one downlink BWP.

1 . A method of handling Radio Link Monitoring and Radio Link Failures (RLF) in Wireless Relay Networks, the wireless relay network having a donor node wherein the donor node is an Integrated Access and Backhaul (IAB) node connected to a core network, a first parent node (IAB-node A), a second parent node (IAB-node B), a child node (IAB-node/UE), the method comprising:
 monitoring, by the child node, radio link conditions on one or multiple bandwidth parts (BWP) of the parent node;   detecting, by the child node, a potential RLF in at least one active downlink (DL) BWP;   determining, by the child node, an RLF or Potential RLF based on the monitored BWP of the parent node; and   configuring by the network, active BWP switching to maintain IAB-parent backhaul radio link in active BWP(s) based on the radio link condition.   
     
     
         2 . A node comprising:
 monitoring circuitry configured to monitor radio link conditions on one or multiple bandwidth parts (BWPs) of a parent node; and   detecting circuitry configured to detect radio link failure (RLF) in at least one downlink BWP.   
     
     
         3 . A method of a node comprising:
 monitoring radio link conditions on one or multiple bandwidth parts (BWPs) of a parent node; and   detecting radio link failure (RLF) in at least one downlink BWP.