Method and apparatus for handover of wireless backhaul node, which minimizes data downtime in next-generation mobile communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsDonggun KIM, June HWANG
Life of this patent
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Abstract
The disclosure relates to: a communication technique for merging an IoT technology with a 5G communication system for supporting a higher data transmission rate than a 4G system; and a system therefor. The disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security- and safety-related services, and the like) on the basis of a 5G communication technology and an IoT-related technology. The disclosure discloses a method and apparatus for handover of a wireless backhaul node.
Claims15
A method performed by a first integrated access and backhaul (IAB) node in a wireless communication system, the method comprising:
- receiving, from a second IAB node, a message related to handover of an IAB node and including target backhaul adaptation protocol (BAP) configuration information;
- performing handover from a source node to a target node based on source BAP configuration information and the message;
- and
- performing communication with the target node based on the target BAP configuration information when random access with the target node is completed,
- wherein downlink data is received from each of the source node and the target node before connection with the source node is released.
A method performed by a second integrated access and backhaul (IAB) node in a wireless communication system, the method comprising:
- transmitting, to a first IAB node, a message related to handover of an IAB node and including target backhaul adaptation protocol (BAP) configuration information;
- wherein handover from a source node to a target node is performed based on source BAP configuration information and the message, and when random access with the target node is completed, the target BAP configuration information is applied for communication with the target node, and the source node and the target node transmit downlink data to the first IAB node, respectively, until connection between the first IAB node and the source node is released.
A first integrated access and backhaul (IAB) node in a wireless communication system, the first IAB node comprising:
- a transceiver configure to transmit or receive a signal;
- and
- a controller connected to the transceiver,
- wherein the controller is configured to:
- receive, from a second IAB node, a message related to handover of an IAB node and including target backhaul adaptation protocol (BAP) configuration information;
- perform handover from a source node to a target node based on source BAP configuration information and the message;
- and
- perform communication with the target node based on the target BAP configuration information when random access with the target node is completed,
- wherein downlink data is received from each of the source node and the target node until connection with the source node is released.
A second integrated access and backhaul (IAB) node in a wireless communication system, the second IAB node comprising:
- a transceiver configure to transmit or receive a signal;
- and
- a controller connected to the transceiver,
- wherein the controller is configured to transmit, to a first IAB node, a message related to handover of an IAB node and including target backhaul adaptation protocol (BAP) configuration information;
- wherein handover from a source node to a target node is performed based on source BAP configuration information and the message, and when random access with the target node is completed, the target BAP configuration information is applied for communication with the target node, and the source node and the target node transmit downlink data to the first IAB node, respectively, until connection between the first IAB node and the source node is released.
Dependencies are inferred from the claim text.