• The Journal of Engineering Research
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• v.6 no.2
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• pp.125-130
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• 2004

In the current Internet, IP addresses does not support Mobility and Multi-homming because it depend on their topological location. To resolve these problems, IETF hip WG introduces Host Identity Protocol that separates the endpoint identifier and locator roles of IP addresses. However the DNS that was presented for the HIP had only a part of the expansion design from the existing DNS function, so it was not an absolute complete method. This paper propose how the dymanic DNS has been designed so that it support the HIP completely. We added the Host Identity Namespace and the Rendezvous Server Namespace, defined the new PRs in DNS.

• Journal of Internet of Things and Convergence
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• v.2 no.4
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• pp.41-47
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• 2016

The IP address used in the Internet has the role of both identifier and locator to bind a host and the application, however, this binding restricts some functions such as mobility and multi-homing. As a result, we suggested a host ID-LOC separation protocol using DHT with SDN features. The proposed scheme is a network-based scheme, and uses IPv6 addresses. The underlying network is partitioned into Host Identity domain and IP domain for identifiers and locators. In this paper, we present a simple cost model for analyzing both the proposed scheme and one of the previous works, the MOFI. The result of cost analysis shows better performance of the proposed scheme.

• The KIPS Transactions:PartC
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• v.18C no.6
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• pp.405-412
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• 2011

Our proposed mobility management scheme is based on Multicasting and HIP(Host Identity Protocol) in PMIPv6(Proxy Mobile IPv6) Networks, and allows users to handoff within and across different administrative domains. The main advantage of our scheme is to enable the inter-domain handoff of both types of nodes with a reduced signalling overhead and packet losses. Specifically, the scheme enables the interworking between host-based and network-based mobility support, by means of the interaction between PMIPv6 with Multicasting and HIP. Performance evaluations demonstrate that our scheme improves the handoff latency and packet losses compared to other global mobility management protocols.

• Journal of Internet of Things and Convergence
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• v.2 no.2
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• pp.37-49
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• 2016

An IP address is used as a host identifier and a locator to bind hosts and applications to their location in existing Internet. Several protocols are proposed to eliminate this binding. Most of these protocols use IPv6-based host identifiers to maintain compatibility with existing Internet, but these identifiers cannot be handled by standard IPv6 routers because such identifiers are unroutable. Therefore, host identifiers need to be usually converted to locators at hosts, and the standard IPv6 protocol should be modified to interoperate with these protocols. In this paper, we propose a network-based host identifier locator separating scheme in software-defined networking. The proposed scheme separates the underlying network into Host Identity and IP domains in order to directly forward unroutable identifiers. The Host Identity domain operates as an overlaid network over IP domain, and it makes the unroutable identifiers to be routable using distributed hash table based routing strategy. For the evaluation, we compared the proposed scheme with the previous scheme using signaling costs and packet delivery costs. The result shows that the proposed scheme is more suitable in the recent mobile-based environments.

• Electronics and Telecommunications Trends
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• v.28 no.3
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• pp.95-105
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• 2013

현재의 인터넷은 라우팅과 어드레싱에 대한 심각한 확장성 문제를 가지고 있다. 이러한 확장성의 가장 큰 원인은 멀티호밍, 트래픽 엔지니어링, 집적되지 못하는 주소 할당 등이며, 이로 인하여 백본 지역의 라우팅 테이블 크기가 기하급수적으로 증가하는 현상을 보이고 있다. 또한 현재의 IP 주소는 호스트의 식별자와 위치자의 의미를 함께 사용하기 때문에 호스트의 이동성 및 멀티호밍을 지원하는 데 한계점이 있다. 이러한 현재 인터넷의 문제점 해결 방안으로 식별자와 위치자 분리 구조가 연구되고 있다. 본고에서는 식별자와 위치자 분리 구조에서 필수적으로 요구되는 식별자와 위치자 간의 매핑 시스템에 관한 연구들을 소개하고 각각의 장단점을 분석한다. 본고에서는 현재 인터넷 기반의 대표적 식별자와 위치자 분리 구조 중 IETF(Internet Engineering Task Force)에서 잘 알려진 LISP(Locator Identifier Separation Protocol), HIP(Host Identity Protocol), ILNP(Identifier Locator Network Protocol)에서 제안하는 매핑 시스템들과 미래인터넷 기반의 대표적 식별자와 위치자 분리 구조 중 미국의 MobilityFirst와 한국의 MOFI(Mobile-Oriented Future Internet)에서 제안하는 매핑 시스템들을 중점적으로 소개한다.

• Journal of KIISE:Computer Systems and Theory
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• v.32 no.3
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• pp.125-132
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• 2005

Wireless access always has to include the authentication of communication partners and the encryption of communication data in order to use secure M-Commerce services. However, wireless systems have limitations compared with the wired systems, so we need an efficient authentication and key exchange protocol considering these limitations. In this paper, we propose an efficient authentication and key exchange protocol for M-Commerce users using elliptic curve crypto systems. The proposed protocol reduces the computational load of mobile users because the wireless service provider accomplishes some parts of computations instead of the mobile user, and it uses the password-based authentication in wireless links. Also, it guarantees the anonymity of the mobile user not to reveal directly the real identity of the user to the M-Commerce host, and preserves the confidentiality of communication data between the M-Commerce host and the user not to know the contents of communication between them to others including the wireless service provider.

• Journal of Information Processing Systems
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• v.9 no.4
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• pp.651-659
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• 2013

In the Host Identity Protocol (HIP), the existing host-based handover scheme tends to induce large handover delays and packet loss rates. To deal with this problem, we are proposing a network-based handover scheme for HIP in the mobile networks, in which the access routers of the mobile node will establish a handover tunnel and will perform the route optimization for data transmission. We also discuss how to extend the HIP Update message to use the proposed handover scheme. From ns-2 simulations, we can see that the proposed handover scheme can significantly reduce the handover delay and packet losses during handover, as compared to the existing handover schemes.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.1485-1488
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• 2005

현재 인터넷을 구성하고 있는 두가지 중요 이름공간(name space)인 IP(Internet Protocol) 주소와 DNS(Domain Name Service) 이름의 단점을 보완하기 위해 연구되고 있는 HIP(Host Identity Protocol)는 IP와 트랜스포트 계층 사이에 새로운 계층과 프로토콜을 제안함으로써 제한된 형태의 신뢰성을 제공하고 이동(mobility), 멀티홈(multihome), 동적 IP주소변경 등을 지원하며 DoS(Denial of Service) 공격 등을 방어한다. 본 논문에서는 현재까지 IETF에서 진행된 HIP관련 연구 동향을 분석한다.

• Review of KIISC
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• v.15 no.4
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• pp.61-71
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• 2005

현재 인터넷에서 사용되고 있는 IP주소는 호스트 위치와 신원을 동시에 식별할 수 있도록 설계되어 있다. 이러한 설계 패러다임은 호스트가 고정된 위치에서 하나의 IP주소를 갖는 기존의 인터넷 환경에 적응적이다. 하지만 차세대 인터넷에서는 호스트 이동성, 멀티호밍, 보안등이 중요한 핵심서비스로 부각되고 있다. 이러한 환경에서는 위치를 나타내는 IP주소가 동적으로 변경되고, 하나의 호스트에 두개 이상의 IP주소가 할당되고, 호스트 보안의 강화를 요구하는 새로운 환경이다. 따라서 현재의 IP주소가 호스트 위치와 신원을 동시에 나타내는 설계 패러다임으로는 새로운 차세대 인터넷 환경을 원활하게 지원할 수 없다. 본 논문에서는 차세대 인터넷 환경에서 부각되고 있는 호스트 이동성(Mobility), 멀티호밍(Multi-Homing), 보안등의 서비스를 원활하게 지원할 수 있는 하나의 새로운 기술로 HIP(Host Identity Protocol)을 소개하였다. HIP은 2004년 IETF hip WG가 결성되어 현재 표준화가 진행 중인 차세대 인터넷 기술이다. 기본 아이디어는 호스트 신원과 위치정보를 분리하여 차세대 인터넷 환경에 적응적인 프로토콜을 새롭게 재구성한 것이다.

• ETRI Journal
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• v.35 no.4
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• pp.666-676
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• 2013

With the recent growth in smartphone services, the "mobile" environment has become a key factor to consider in the design of the future Internet. In this paper, we propose Mobile-Oriented Future Internet (MOFI), which is a new architecture for the future Internet for mobile-oriented environments. The MOFI architecture is designed with three functional features: global identifier and local locator in the identifier-locator separation, query-first data delivery for route optimization, and distributed control of identifier-locator mapping. The proposed architecture and functional operations are implemented and tested using the Linux platform. From the experiment results, we see that the MOFI architecture performs better than the existing identifier-locator separation schemes, such as Proxy Mobile IP and Host Identity Protocol, in terms of data throughout, mapping control overhead, and handover delay.