Apparatus and method for initial access in wireless communication system

Abstract

The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments of the disclosure provide a method, device and apparatus for initial access, wherein a method for initial access includes: receiving a first configuration message; and establishing a connection between a relay node and an anchor node, based on the first configuration message. The method provided in this disclosure establishes a connection between the relay node and a central unit of the anchor node through the information interaction between base stations and the information interaction between base station and relay node. The present disclosure provides a scheduling method and a first node. The method includes: receiving second scheduling related information reported by at least one second node and first scheduling related information reported by at least one UE that is connected to the at least one second node; generating scheduling information used by the at least one second node for scheduling the connected UE; and transmitting the generated scheduling information to the at least one second node and/or the connected UE. A corresponding second node, third node, and computer readable medium are also provided.

1 - 9 . (canceled) 
     
     
         10 . A method performed by a first node in a wireless communication system, the method comprising:
 receiving, from a second node, a first uplink (UL) radio resource control (RRC) message including information regarding an internet protocol (IP) address for a distributed unit (DU) of the second node and a second UL RRC message including information indicating that the second node is an integrated access and backhaul (IAB) node;   establishing an F1 connection between the DU of the second node and a central unit (CU) of the first node, based on the IP address for the DU of the second node;   transmitting, to a third node, a handover request message including the information indicating that the second node is the IAB node;   receiving, from the third node, a handover response message in response to the handover request message.   
     
     
         11 . The method of  claim 10 , further comprising:
 transmitting, to the second node, a downlink (DL) RRC message including configuration information on at least one internet protocol (IP) address for the second node.   
     
     
         12 . The method of  claim 11 ,
 wherein the DL RRC message further includes configuration information regarding a list including the IP address for the DU of the second node.   
     
     
         13 . The method of  claim 10 , further comprising:
 transmitting, via a cell of the first node, an RRC message including information associated with the cell,   wherein the information associated with the cell indicates that the cell supporting an access of the IAB node allows the access of the second node.   
     
     
         14 . The method of  claim 10 , further comprising:
 transmitting, to the third node, the information regarding the IP address for the DU of the second node,   wherein the third node is to be operated as an evolved-universal radio access network-new radeo (en)-gNodeB (gNB), and   wherein the first node is a master base station, and the third node is a secondary gNB (SGNB).   
     
     
         15 . A method performed by a second node in a wireless communication system, the method comprising:
 transmitting, to a first node, a first uplink (UL) radio resource control (RRC) message including information regarding an internet protocol (IP) address for a distributed unit (DU) of the second node and a second UL RRC message including information indicating that the second node is an integrated access and backhaul (IAB) node;   establishing an F1 connection between the DU of the second node and a central unit (CU) of the first node, based on the IP address for the DU of the second node; and   establishing, by a mobile termination (MT) of the second node, dual connectivity with the first node and a third node,   wherein the information indicating that the second node is the IAB node included in a handover request message is transmitted to the third node.   
     
     
         16 . The method of  claim 15 , further comprising:
 receiving, from the first node, a downlink (DL) RRC message including configuration information regarding at least one internet protocol (IP) address for the second node.   
     
     
         17 . The method of  claim 16 ,
 wherein the DL RRC message further includes configuration information regarding a list including the IP address for the DU of the second node.   
     
     
         18 . The method of  claim 17 , further comprising:
 receiving, via a cell of the first node, an RRC message including information associated with the cell,   wherein the information associated with the cell indicates that the cell supporting an access of the IAB node allows the access of the second node.   
     
     
         19 . The method of  claim 15 ,
 wherein the information on the IP address for the DU of the second node is transmitted to the third node,   wherein the third node is configured to be operated as an evolved-universal radio access network-new radeo (en)-gNodeB (gNB), and   wherein the first node is a master base station, and the third node is a secondary gNB (SGNB).   
     
     
         20 . A first node in a wireless communication system, the first node comprising:
 a transceiver; and   a controller coupled with the transceiver and configured to:   receive, from a second node, a first uplink (UL) radio resource control (RRC) message including information regarding an internet protocol (IP) address for a distributed unit (DU) of the second node and a second UL RRC message including information indicating that the second node is an integrated access and backhaul (IAB) node;   establish an F1 connection between the DU of the second node and a central unit (CU) of the first node, based on the IP address for the DU of the second node;   control to transmit, to a third node, a handover request message including the information indicating that the second node is the IAB node;   receive, from the third node, a handover response message in response to the handover request message.   
     
     
         21 . The first node of  claim 20 , wherein the controller is further configured to:
 control to transmit, to the second node, a downlink (DL) RRC message including configuration information on at least one internet protocol (IP) address for the second node.   
     
     
         22 . The first node of  claim 20 ,
 wherein the DL RRC message further includes configuration information regarding a list including the IP address for the DU of the second node.   
     
     
         23 . The first node of  claim 20 , wherein the controller is further configured to:
 control to transmit, via a cell of the first node, an RRC message including information associated with the cell,   wherein the information associated with the cell indicates that the cell supporting an access of the IAB node allows the access of the second node.   
     
     
         24 . The first node of  claim 20 , wherein the controller is further configured to:
 control to transmit, to the third node, the information on the IP address for the DU of the second node,   wherein the third node is configured to be operated as an evolved-universal radio access network-new radeo (en)-gNodeB (gNB), and   wherein the first node is a master base station, and the third node is a secondary gNB (SGNB).   
     
     
         25 . A second node in a wireless communication system, the second node comprising:
 a transceiver; and   a controller coupled with the transceiver and configured to:   transmit, to a first node, a first uplink (UL) radio resource control (RRC) message including information on an internet protocol (IP) address for a distributed unit (DU) of the second node and a second UL RRC message including information indicating that the second node is an integrated access and backhaul (IAB) node;   establish an F  1  connection between the DU of the second node and a central unit (CU) of the first node, based on the IP address for the DU of the second node; and   establish, by a mobile termination (MT) of the second node, dual connectivity with the first node and a third node,   wherein the information indicating that the second node is the IAB node included in a handover request message is transmitted to the third node.   
     
     
         26 . The second node of  claim 25 , wherein the controller is further configured to:
 receive, from the first node, a downlink (DL) RRC message including configuration information on at least one internet protocol (IP) address for the second node.   
     
     
         27 . The second node of  claim 26 ,
 wherein the DL RRC message further includes configuration information on a list including the IP address for the DU of the second node.   
     
     
         28 . The second node of  claim 25 , wherein the controller is further configured to:
 receive, via a cell of the first node, an RRC message including information associated with the cell,   wherein the information associated with the cell indicates that the cell supporting an access of the IAB node allows the access of the second node.   
     
     
         29 . The second node of  claim 25 ,
 wherein the information on the IP address for the DU of the second node is transmitted to the third node,   wherein the third node is configured to be operated as an evolved-universal radio access network-new radeo (en)-gNodeB (gNB), and   wherein the first node is a master base station, and the third node is a secondary gNB (SGNB).