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1. WO2020222196 - BEARER MAPPING IN IAB NODES

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

CLAIMS:

1. A method performed by a first network node in an integrated access and backhaul (IAB) network comprising an IAB donor central unit (CU) network node, IAB donor distributed unit (DU) network node, and at least one of an access IAB network node and an intermediate IAB network node, the method comprising:

receiving (1712) a backhaul channel configuration from a second network node, the backhaul channel configuration comprising a mapping of one or more traffic identifiers to one or more wireless backhaul channels;

receiving (1716) incoming traffic on an ingress link for transmission on a wireless backhaul channel;

determining (1718) the wireless backhaul channel on an egress link for transmitting the incoming traffic based on a type of the incoming traffic and the mapping of one or more traffic identifiers to one or more wireless backhaul channels; and

transmitting (1720) the received incoming traffic on the determined wireless backhaul channel on the egress link

2. The method of claim 1, wherein receiving the backhaul channel configuration comprises receiving radio resource control (RRC) signaling from the second network node.

3. The method of claim 1, wherein receiving the backhaul channel configuration comprises receiving FI signaling from the second network node.

4. The method of any one of claims 1-3, wherein the traffic identifier comprises a traffic type.

5. The method of claim 4, wherein the traffic type comprises one or more of FI traffic, operations and maintenance (OAM) traffic, general packet radio service (GPRS) tunnelling protocol (GTP) traffic, and a fifth generation (5G) quality of service (QoS) indicator (5QI).

6. The method of any one of claims 1-3, wherein the traffic identifier comprises a general packet radio service (GPRS) tunnelling protocol (GTP) tunnel endpoint identifier (TEID).

7. The method of any one of claims 1-6, wherein the backhaul channel configuration further comprises an identification of a default wireless backhaul channel.

8. The method of any one of claims 1-3, wherein each of the one or more traffic identifiers comprise first traffic identifiers and the method further comprises:

receiving (1714) a mapping of one or more second traffic identifiers to the one or more first traffic identifiers; and

wherein determining the wireless backhaul channel on the egress link for transmitting the incoming traffic is based on the mapping of one or more second traffic identifiers to the one or more first traffic identifiers and the mapping of the one or more first traffic identifiers to the one or more wireless backhaul channels.

9. The method of claim 8, wherein the one or more first identifiers comprise one of an Internet protocol (IP) differentiated services code point (DSCP) and an IP flow label.

10. The method of any one of claims 8-9, wherein the second traffic identifier comprises a traffic type.

11. The method of claim 10, wherein the traffic type comprises one or more of FI traffic, operations and maintenance (OAM) traffic, general packet radio service (GPRS) tunnelling protocol (GTP) traffic, and a fifth generation (5G) quality of service (QoS) indicator (5QI).

12. The method of any one of claims 8-9, wherein the second traffic identifier comprises a general packet radio service (GPRS) tunnelling protocol (GTP) tunnel endpoint identifier (TEID).

13. The method of any one of claims 8-12, wherein the mapping of one or more second traffic identifiers to the one or more first traffic identifiers further comprises an identification of a default first traffic identifier.

14. The method of any one of claims 1-13, wherein the first network node is the access IAB network node.

15. The method of any one of claims 1-13, wherein the second network node is the IAB donor CU.

16. A first network node (160) in an integrated access and backhaul (IAB) network comprising an IAB donor central unit (CU) network node, IAB donor distributed unit (DU) network node, and at least one of an access IAB network node and an intermediate IAB network node, the first network node comprising processing circuitry (170) operable to:

receive a backhaul channel configuration from a second network node, the backhaul channel configuration comprising a mapping of one or more traffic identifiers to one or more wireless backhaul channels;

receive incoming traffic on an ingress link for transmission on a wireless backhaul channel;

determine the wireless backhaul channel on an egress link for transmitting the incoming traffic based on a type of the incoming traffic and the mapping of one or more traffic identifiers to one or more wireless backhaul channels; and

transmit the received incoming traffic on the determined wireless backhaul channel on the egress link.

17. The network node of claim 16, wherein the processing circuitry is operable to receive the backhaul channel configuration by receiving radio resource control (RRC) signaling from the second network node.

18. The network node of claim 16, wherein the processing circuitry is operable to receive the backhaul channel configuration by receiving FI signaling from the second network node.

19. The network node of any one of claims 16-18, wherein the traffic identifier comprises a traffic type.

20. The network node of claim 19, wherein the traffic type comprises one or more of FI traffic, operations and maintenance (OAM ) traffic, general packet radio service (GPRS) tunnelling protocol (GTP) traffic, and fifth generation (5G) quality of service (QoS) indicator (5QI).

21. The network node of any one of claims 16-18, wherein the traffic identifier comprises a general packet radio service (GPRS) tunnelling protocol (GTP) tunnel endpoint identifier (TEID).

22. The network node of any one of claims 16-21, wherein the backhaul channel configuration further comprises an identification of a default wireless backhaul channel.

23. The network node of any one of claims 16-18, wherein each of the one or more traffic identifiers comprise first traffic identifiers and the processing circuitry is further operable to:

receive a mapping of one or more second traffic identifiers to the one or more first traffic identifiers; and

wherein the processing circuitry is operable to determine the wireless backhaul channel on the egress link for transmitting the incoming traffic based on the mapping of one or more second traffic identifiers to the one or more first traffic identifiers and the mapping of the one or more first traffic identifiers to the one or more wireless backhaul channels.

24. The network node of claim 23, wherein the one or more first identifiers comprise one of an Internet protocol (IP) differentiated services code point (DSCP) and an IP flow label.

25. The network node of any one of claims 23-24, wherein the second traffic identifier comprises a traffic type.

26. The network node of claim 25, wherein the traffic type comprises one or more of FI traffic, operations and maintenance (OAM ) traffic, general packet radio service (GPRS) tunnelling protocol (GTP) traffic, and fifth generation (5G) quality of service (QoS) indicator (5QI).

27 The network node of any one of claims 23-24, wherein the second traffic identifier comprises a general packet radio service (GPRS) tunnelling protocol (GTP) tunnel endpoint identifier (TEID).

28. The network node of any one of claims 23-27, wherein the mapping of one or more second traffic identifiers to the one or more first traffic identifiers further comprises an identification of a default first traffic identifier.

29. The network node of any one of claims 16-28, wherein the first network node is the access IAB network node.

30. The network node of any one of claims 16-28, wherein the second network node is the IAB donor CU.