Method and apparatus of managing backhaul(BH) links in integrated access and BH(IAB)
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method of configuring a reference signal to manage backhaul (BH) links in an integrated access and BH (IAB) is provided. The method includes providing channel measurement and reporting information, and using the channel measurement and reporting information to discover and maintain backup BH links.
1. A method in an integrated access and backhaul (IAB), the method comprising:
receiving information on resource allocation;
determining one of a synchronization signal block (SSB)-based solution or a channel state information-reference signal (CSI-RS)-based solution for configuring a reference signal to manage backhaul (BH) links based on the information; and
discovering backup BH links based on the solution for configuring the reference signal,
wherein the SSB-based solution is associated with time division multiplexing (TDM) of SSBs based on a hop order, and
wherein the configuring of the reference signal is carried out in one of a centralized manner or a distributed manner.
2. The method of claim 1 , wherein the reference signal is configured based on differing transmission periodicity.
3. The method of claim 2 , wherein the differing transmission periodicity is compared to a periodicity used by access user equipments (UEs).
4. The method of claim 1 , wherein the reference signal is configured based on differing transmission offset in at least one of a reference signal burst level or an individual reference signal level.
5. The method of claim 1 ,
wherein the centralized manner comprises a donor node configuring the reference signal configuration, and
wherein the distributed manner comprises a relay node that is associated with other relay nodes configuring the reference signal configuration.
6. An apparatus in an integrated access and backhaul (IAB), the apparatus comprising:
a transceiver; and
a processor configured to:
control the transceiver to receive information on resource allocation,
determine one of a synchronization signal block (SSB)-based solution or a channel state information-reference signal (CSI-RS)-based solution for configuring a reference signal to manage backhaul (BH) links based on the information, and
discover backup BH links based on the solution for configuring the reference signal,
wherein the SSB-based solution is associated with time division multiplexing (TDM) of SSBs based on a hop order, and
wherein the configuring of the reference signal configuration is carried out in one of a centralized manner or a distributed manner.
7. The apparatus of claim 6 , wherein the apparatus comprises a base station.