Jungha Hong

A flat name based routing scheme for information-centric networking

The paradigm shift from the current host-centric networking to information-centric networking (ICN) generates much interest in the research community. In ICN, the primary communication entity is contents and uniquely identifiable names are assigned directly to the contents, where the names are independent of their locations. Thus, content naming and routing are the key challenges in ICN. In this paper, we propose a flat name based routing scheme for ICN. For scalable routing, we exploit the structure of container which is a space where contents or information objects reside. We also utilize bloom filters as an aggregated form of the flat names and enable the deepest match routing.

A mobility cost model for ID/LOC separation networks

The number of mobile Internet users has been rapidly increasing. With a variety of emerging services, the mobile environments are expected to play a more important role in the future. In this paper, we propose a mathematical model to analyze the average total cost for quantitatively assessing the effectiveness of ID/LOC separation scheme in supporting mobility. Our model takes into account the source mobility as well as the destination mobility. We also propose the average total cost based on the mobility support protocols such as MIP and PMIP. We provide the criterion for judgment of cost-effectiveness by comparing the average total cost of typical ID/LOC separation schemes and the one of the mobility support protocols.

Qualitative analysis of mapping systems in the Internet architectures based on identifier/locator separation

The current Internet has several known challenges, such as routing scalability, mobility, multihoming, traffic engineering, etc. due to the overloaded semantics of IP address, i.e. it is used as a node identifier (ID) and a node locator (LOC). Thus, the research community has redesigned the Internet architecture based on ID/LOC separation to overcome the limitations of the current Internet. In all Internet architectures based on ID/LOC separation, ID to LOC mapping system is necessarily required to bind ID and its LOC, since ID is no longer dependent to its LOC logically or physically. Thus, how to design the mapping system is a key challenge in ID/LOC separation architecture. In this paper, we analyse qualitatively the mapping systems proposed in ID/LOC separation architectures to provide insights into designing a new mapping system. The main contribution in this paper is that we categorise ID to LOC mapping systems according to the mapping server structure and provide the pros and cons of the mapping systems belonging to each category. Based on our qualitative analysis, we also examine intuitively if the mapping systems in each category satisfy their requirements.

Demonstrating A Scalable Name Resolution System for Information-Centric Networking

In implementing Information-Centric Networking (ICN), an efficient Name Resolution System (NRS) is required since names assigned directly to the named data objects (NDOs) are location independent. On designing NRS, the most important challenge is scalability on the ever increasing number of NDO, which becomes even more critical when flat names are used in ICN. In this demonstration, we present a scalable NRS with flat names for ICN, where bloom filters are utilized to aggregate flat names. Specifically, we show the feasibility of our NRS with flat names and highlight the benefits of utilizing bloom filters.

A normalized average cost model for ID/LOC separation networks

The current Internet has several known challenges, such as mobility, multihoming, routing scalability, traffic engineering, etc. due to the overloaded semantics of IP address, i.e. the IP address is used as a node identifier (ID) as well as a node locator (LOC). Thus, the research community has proposed the ID/LOC separation scheme. In this paper, we propose a normalized average cost model to analyze the ID/LOC separation networks assuming a local caching mechanism under a single source-destination model. We analyze the model assuming the general packet arrival process and the general sojourn time for destination, respectively to show the impact of the packet arrival process and the mobility pattern of the destination on the probability that a packet is delivered to the correct location of the destination.

Challenges of name resolution service for information centric networking toward IoT

Information-Centric Networking (ICN) has been recognized as a promising technology for the future Internet architecture. The primary communication object in ICN is the named data object (NDO) and its main goal is the efficient dissemination and retrieval of the NDOs in a global scale. In this regard, ICN can be a candidate architecture in IoT environment since IoT focuses on data and information rather than end-to-end communications. In ICN, the name identifying the data object is location independent and so Name Resolution service (NRS) is one of the most important design challenges, where NRS is to translate object names into routing hints such as locators. In this paper, we discuss the motivation and challenges of NRS for ICN toward IoT.

Analysis of packet delivery cost for cost-effectiveness of ID/Locator separation networks

It has been shown that the Internet environment has rapidly changed from fixed to mobile one with the wide popularity of smart phones and the emergence of various wireless/mobile networks. Thus, in research community there has been a consensus that separating Identity (ID) from Locator (LOC) is a one promising concept to address intrinsically such a change. In this paper, we propose a mathematical model to analyze the average total cost for ID/LOC separation schemes and analyze the packet delivery cost using the proposed model for cost-effectiveness of ID/LOC separation schemes in supporting mobility, where reliable packet delivery and local caching mechanism are assumed. We provide a factor of packet delivery cost for cost-effectiveness of ID/LOC separation schemes comparing to mobile IP.

New mapping system in networks with locator/identifier separation

The locator/identifier separation is a design principle for new routing architectures that make Internet routing more scalable. Finding the location of a host requires a mapping system that returns appropriate locators in response to mapping requests for specific identifiers. In this paper, we propose a mapping system in networks with locator/identifier separation assuming that the network is divided into many administrative domains (ADs). Each AD in the proposed mapping system manages three mapping tables supporting registration, MAP-request, response, and mobility. We propose to use self-certifying ID to maintain security and privacy, and distributed hash tables (DHTs) to build a scalable mappings system. We show that the proposed scheme efficiently supports registration, MAP-request, response, and mobility.