Interdigital Patent Holdings, Inc.

Magurawalage Chathura Madhusanka Sarathchandra

Michelle Perras

Samir Ferdi

Taimoor Abbas

Jung Je Son

Saad Ahmad

A relay node may detect conflicts regarding media access control (MAC) addresses. The relay node may receive a request to establish a links with a source node and a target node. The relay node may receive the MAC addresses of the source node and the target node. The relay node may detect a conflict associated with the MAC addresses of the source node and the target node. The relay node may release the link with the target node.

Wireless transmit/receive unit (WTRU) to WTRU relay media access control (MAC) access conflict support

Systems and methods are described herein for handling connection rejects via a wireless transmit/receive unit (WTRU)-to-WTRU (U2U) relay associated with backoff times on behalf of a source end WTRU. A relay WTRU may retry to establish connection with a target WTRU on behalf of a source WTRU, for example, based on receiving a rejection (e.g., with a backoff value) from the target WTRU. The source WTRU may associate the reject message to the target WTRU, and the relay WTRU may be available to reach other target WTRUs. The relay WTRU may send a reject message to other source WTRUs (e.g., if the back off duration is active, running) for the same target WTRU.

Handling connection rejections via U2U relay associated with backoff times on behalf of a source end WTRU

A relay node may detect conflicts regarding media access control (MAC) addresses. A target node may receive a request from the relay node. The request may comprise a request to establish communications with the target node. The target node may send, to the relay node, an indication of the MAC address of the target node. The target may receive a link release message from the relay node. The link release message may comprise an indication of conflict associated with the MAC address of the target node.

A relay node may detect conflicts regarding media access control (MAC) addresses. A source node may send a request to the relay node. The request may be a request to establish communications with a target node. The source may send, to the relay node, an indication of the MAC address of the source node. The source node may receive a reject message from the relay node. The reject message may comprise an indication of a conflict associated with the MAC address of the source node.

A method for UE-to-UE (U2U) relay discovery security is disclosed. The method may comprise provisioning an end-UE with security material for a direct discovery set and a U2U discovery message and provisioning a U2U relay with security material for the U2U discovery message. The security material for the direct discovery set may comprise at least one of: A ProSe restricted code, associated key material, or an indicator associated with a relay service code (RSC) that indicates whether the RSC supports per ProSe direct discovery set protection. The method may comprise sending, by the end-UE to the U2U relay, a direct connection request (DCR) message. The DCR message may comprise at least one of: an RSC, and end-UE User info identification (ID), or a ProSe restricted code. The method may comprise sending, by the end-UE, an indication for direct discovery set protection.

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London, United Kingdom

Magurawalage Chathura Madhusanka Sarathchandra