Methods for restricted direct discovery
Techniques may be used for restricted direct discovery in proximity services (ProSe). A ProSe function may receive from a discovery wireless transmit/receive unit (WTRU) a restricted ProSe Application identity (ID) of an application located at the discoverer WTRU requesting ProSe discovery. The ProSe function may derive a first and second ProSe codes for the discoveree WTRU and discoverer WTRU, and provide the ProSe codes to the discoverer and/or discoveree WTRUs. A ProSe application server may receive a revocation message from an announcing WTRU indicating a revoked WTRU. The ProSe application server may provide a ProSe discovery WTRU ID for the revoked WTRU to a ProSe Function. The ProSe function may instruct the announcing WTRU to stop announcing a ProSe code known by the revoked WTRU, and may provide a new ProSe code to at least one WTRU authorized to discover the announcing WTRU.
1. A first wireless transmit/receive unit (WTRU) comprising:
a transceiver; and
a processor, wherein
the transceiver and the processor are configured to:
transmit, directly to other WTRUs, a proximity services code associated with a proximity services application, wherein the proximity services application is running on the first WTRU and wherein the proximity services code is used for proximity services discovery; and
send, to a network device providing a proximity services application server, an indication revoking discovery permission of the proximity services application by a second WTRU.
2. The first WTRU of claim 1 , wherein the indication revoking the discovery permission of the proximity services application by the second WTRU includes an identity of the second WTRU.
3. The first WTRU of claim 1 , wherein the indication revoking the discovery permission of the proximity services application by the second WTRU further revokes discovery permission of the proximity services application by a third WTRU.
4. The first WTRU of claim 1 , wherein the radio interface is a PC5 interface.
5. A method performed by a first wireless transmit/receive unit (WTRU), the method comprising:
transmit, directly to other WTRUs, a proximity services code associated with a proximity services application, wherein the proximity services application is running on the first WTRU and wherein the proximity services code is used for proximity services discovery; and
sending, to a network device providing a proximity services application server, an indication revoking discovery permission of the proximity services application by a second WTRU.
6. The method of claim 5 , wherein the indication revoking the discovery permission of the proximity services application by the second WTRU includes an identity of the second WTRU.
7. The method of claim 5 , wherein the indication revoking the discovery permission of the proximity services application by the second WTRU further revokes discovery Permission of the proximity services application by a third WTRU.
8. The method of claim 5 , wherein the radio interface is a PC5 interface.