ISO/IEC TR 29181-4:2013 describes the problem statements of current network and the requirements for Future Network in the mobility perspective. It mainly specifies

• problems of the current network in mobile environment, and
• requirements for mobility support in Future Network.

In addition, ISO/IEC TR 29181-4:2013 gives information on

• existing mobility control schemes in the current network,
• examples of high-level mobility control architecture for Future Network,
• distributed mobility control in the Proxy Mobile IPv6 networks, and
• additional considerations for Future Network mobility.