Methods for inter IAB-donor-DU BAP tunneling
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsThomas Walldeen, Filip Barac, Jose Luis Pradas, Marco Belleschi
Life of this patent
Estimating the term…
Abstract
There is provided a method performed by a first donor distributed unit (DU) for routing traffic to a second donor DU in an Integrated Access Backhaul (IAB) network. The method may comprise: receiving an uplink (UL) packet, destined to the second donor DU, from an IAB node, which has a communication path to the second donor DU that is unavailable; appending a header pertaining to a tunnel to the UL packet; and sending the UL packet through the tunnel to the second donor DU, the tunnel being established between the first donor DU and the second donor DU.
Claims20
A method performed by a first donor distributed unit (DU) connected to a first centralized unit (CU) for routing traffic to a second donor DU in an Integrated Access Backhaul (IAB) network, the method comprising:
- receiving an uplink (UL) packet, destined to the second donor DU connected to a second CU different from the first CU, from an IAB node, which has a communication path to the second donor DU that is unavailable;
- appending a header pertaining to a tunnel to the UL packet;
- and
- sending the UL packet through the tunnel to the second donor DU, the tunnel being established between the first donor DU and the second donor DU.
A method performed by a second donor distributed unit (DU) connected to a second centralized unit (CU) for receiving traffic from a first donor DU, in an Integrated Access Backhaul (IAB) network, the method comprising:
- receiving an uplink (UL) packet from the first donor DU connected to a first centralized unit (CU) different from the second CU, via a tunnel being established between the first donor DU and the second donor DU, the UL packet having a header pertaining to the tunnel and destined to the second donor DU and originated from an IAB node which has a communication path to the second donor DU that is unavailable;
- removing the header pertaining to the tunnel from the UL packet;
- and
- sending the UL packet to a network node.
A method performed by a first donor distributed unit (DU) connected to a first centralized unit (CU) for routing traffic to a second donor DU in an Integrated Access Backhaul (IAB) network, the method comprising:
- eceiving a downlink (DL) packet, from the first centralized unit (CU);
- appending a header pertaining a tunnel to the DL packet, the DL packet destined to an IAB node which has a communication path to the first donor DU that is unavailable;
- and
- sending the DL packet with the appended header to the second donor DU via the tunnel, the tunnel being established between the first donor DU and the second donor DU, wherein the second donor DU is connected to a second CU, different from the first CU.
Dependencies are inferred from the claim text.