Network-controlled wtru address/anchor selection

A network access device comprising:

• a processor and a transceiver;
• the processor and the transceiver configured to establish a session with a wireless transmit/receive unit (WTRU);
• the processor and the transceiver configured to receive a request for an IP address, based on an IP mobility requirement of an application on the WTRU, when establishing the session;
• and
• the processor and the transceiver configured to transmit an IP address, selected from a plurality of available IP addresses, based on the IP mobility requirement;
• wherein the IP mobility requirement corresponds to one of at least three IP mobility capabilities of the network access device.

A method for use in a network access device, the method comprising:

• establishing a session with a wireless transmit/receive unit (WTRU);
• receiving, from the WTRU, a request for an IP address, based on an IP mobility requirement of an application on the WTRU, when establishing the session;
• and
• transmitting, to the WTRU, an IP address selected from a plurality of available IP addresses, based on the IP mobility requirement,
• wherein the IP mobility requirement corresponds to one of at least three IP mobility capabilities of the network access device.