Future Work

Following the development of different schemes during the research for this thesis, there are some interesting issues that need further investigation, in order to improve the design, the applicability and the performance of the proposed schemes. Further research in the following directions is therefore recommended:

under a common administrative domain. The schemes also offer DMM support to the mobile nodes moving between networks under different administrative domains having certain levels of trust relationship. It is possible that the mobile nodes‟ movement can involve networks under different administrative domains, with different policies, and security mechanisms. However, this creates security issues. Further studies can address the security issues under this scenario – by proposing an appropriate security mechanism. Moreover, the proposed route optimization mechanism may have administrative policy issues, such as charging. Future studies can focus on charging- related mechanisms for the proposed schemes.

(b) The performance evaluation and analysis of the proposed schemes have been carried out using analytical modelling and simulation. It will be interesting to validate the schemes with a real-life implementation or test-bed, so as to reveal the real-world performance of the schemes.

(c) It will be worthwhile to further improve DM-RMA, in order to support NEMO. This can be achieved by borrowing ideas from ND-RMG, with a few modifications. Also, it will be interesting to compare ND-RMG with N-DMM by means of simulations.

(d) In the design of the route optimization for PMIPv6, the location of the coordinating MAG (CMAG) is externally decided by the network administrator. A further study can be carried out to develop an algorithm that can dynamically ensure that the CMAG is appropriately positioned. Moreover, future research can focus on the validation of the scheme by way of a simulation in bigger scenarios.

(e) The mobile nodes in the proposed distributed mobility schemes configure and use IP addresses obtained from different networks. A mechanism to allow an MN to choose a particular IP address for a specific application may well be investigated in future work.

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