The Experts below are selected from a list of 195 Experts worldwide ranked by ideXlab platform

Debashis Saha - One of the best experts on this subject based on the ideXlab platform.

  • A one-pass method of MIP Registration by WLAN host through GPRS network
    Lecture Notes in Computer Science, 2020
    Co-Authors: Sibaram Khara, Iti Saha Mishra, Debashis Saha
    Abstract:

    This paper proposes a new technique for Mobile IP (MIP) Registration by WLAN host (WH) through GPRS network. The home agent (HA) of WH resides in external IP network. The gateway GPRS support node (GGSN) provides foreign agent (FA) functionality for WH in GPRS. After successful attach with GPRS network, WH needs two mandatory passes for MIP Registration with HA. First it establishes PDP (packet data protocol) context in GPRS network and then it sends MIP Registration Request (MRR) to FA at GGSN. This causes a large delay for handoff from WLAN to GPRS. We propose a one-pass technique of MIP Registration through GPRS network to reduce the handoff delay. We transport MIP-Registration Request of WH in the information field of activate-PDP-context Request message to GGSN. Thus MIP Registration message reaches GGSN before completion of PDP context establishment. This technique reduces the control signaling for handoff from WLAN to GPRS. We observed from simulated results that proposed one-pass technique reduces handoff delay by 18% compared to handoff delay in two-pass method.

  • Global gateway-based UMTS/WLAN integration for improved delay performance
    International Journal of Parallel Emergent and Distributed Systems, 2010
    Co-Authors: Sibaram Khara, Iti Saha Mishra, Debashis Saha
    Abstract:

    This paper proposes a loose coupling-based integration between universal mobile telecommunication system (UMTS) and wireless local area networks (WLANs) using mobile Internet protocol (MIP)-based vertical handoff between the two networks. In loose coupling, an integrated network must provide home agent (HA) functionality when a UMTS subscriber moves to WLAN. The position of HA effects the performance of an integrated network. If HA is deployed at gateway GPRS (general packet radio service) support node (GGSN), delay for data as well as control packets increases when both receiving and transmitting mobile stations (MSs) reside in WLAN. Because each packet travels to GGSN through Gi interface, and routed back to WLAN through the same interface. HA can also be deployed in WLAN Internet protocol (IP) network. This improves delay for data packets, but handoff delay from WLAN to UMTS increases because an MS cannot send MIP Registration Request to HA before the establishment of packet data protocol context in UMTS network. We propose an efficient integration by fixing the position of HA in a global gateway router which is deployed in WLAN IP network. The proposed interworking technique reduces packet delay when both sending and receiving MSs are in WLANs. The methods also update location of a user in UMTS as well as WLAN so that he/she is always reachable from each network irrespective of current position. ns-2-Based simulation results show that our new handoff methods reduce handoff delay from UMTS to WLAN by 10% and that from WLAN to UMTS by 18%.

  • Improving Delay Performance in UMTS/WLAN Integrated Networks with Global Gateway Router
    2008 16th International Conference on Advanced Computing and Communications, 2008
    Co-Authors: Sibaram Khara, Iti Saha Misra, Debashis Saha
    Abstract:

    This paper presents efficient methods of vertical handoffs from UMTS to WLAN and vice versa in a loose coupling architecture. When a mobile terminal (MT) moves from UMTS to WLAN, it performs mobile IP (MIP) Registration with home agent (HA). Subsequently, HA needs to perform location update signaling with UMTS network to make the MT reachable from UMTS. If HA is deployed at gateway GPRS support node (GGSN), all incoming packets from the Internet to an MT are routed via GGSN and average packet-delay increases when the MT is in loosely-coupled WLAN. MIP Registration is also affected by the traffics between the Internet and UMTS. To avoid this problem, HA can be deployed in WLAN IP network, but handoff delay from WLAN to UMTS will be more because an MT cannot send MIP-Registration Request to HA before the establishment of PDP context in UMTS network. We propose efficient handoff methods with simple modification in GPRS tunneling protocol (GTP) and HA functionality by placing a global gateway router. Our ns-2 based simulation results show that the proposed technique improves MIP Registration during handoff from UMTS to WLAN and vice versa. It also provides lower end-to-end packet delay for Internet services when an MT is residing in WLAN.

  • ICDCN - A one-pass method of MIP Registration by WLAN host through GPRS network
    Distributed Computing and Networking, 2006
    Co-Authors: Sibaram Khara, Iti Saha Mishra, Debashis Saha
    Abstract:

    This paper proposes a new technique for Mobile IP (MIP) Registration by WLAN host (WH) through GPRS network. The home agent (HA) of WH resides in external IP network. The gateway GPRS support node (GGSN) provides foreign agent (FA) functionality for WH in GPRS. After successful attach with GPRS network, WH needs two mandatory passes for MIP Registration with HA. First it establishes PDP (packet data protocol) context in GPRS network and then it sends MIP Registration Request (MRR) to FA at GGSN. This causes a large delay for handoff from WLAN to GPRS. We propose a one-pass technique of MIP Registration through GPRS network to reduce the handoff delay. We transport MIP-Registration Request of WH in the information field of activate-PDP-context Request message to GGSN. Thus MIP Registration message reaches GGSN before completion of PDP context establishment. This technique reduces the control signaling for handoff from WLAN to GPRS. We observed from simulated results that proposed one-pass technique reduces handoff delay by 18% compared to handoff delay in two-pass method.

Midriem Mirdanies - One of the best experts on this subject based on the ideXlab platform.

  • Electric vehicle mobile charging station dispatch algorithm
    Energy Procedia, 2015
    Co-Authors: Tinton Dwi Atmaja, Midriem Mirdanies
    Abstract:

    When electric vehicle (EV) arrives at the full occupied fixed charging station (FCS), the EV will have a waiting time for quite some time. EV operator could dispatch mobile charging station (MCS) to the overload FCS providing extra charging pole on the FCS. MCS are determined as an electric vehicle equipped with several charging poles and/or limited energy storage. Dispatched MCS was divided into two categories; MCS_nES and MCS-wES. The MCS-nES was determined as MCS unit equipped with several charging poles without any energy storage. This unit connects the inlet to the power grid and undertake on-grid charging mode to assist the overload FCS. MCS-wES was determined as MCS unit equipped with energy storage so it can undertake offgrid charging to the EV outside FCS without connected to the power grid. The entire algorithm consists of six procedures: Request CS location, EV arrival/Registration, Request MCS, cancel donate MCS, cancel Request MCS and charge complete. An internet-base information management system was designed to facilitate the communication between CS server, EV, MCS and FCS. The procedure helps the EVs to improve their waiting time when they are queued in full FCS.

Sibaram Khara - One of the best experts on this subject based on the ideXlab platform.

  • A one-pass method of MIP Registration by WLAN host through GPRS network
    Lecture Notes in Computer Science, 2020
    Co-Authors: Sibaram Khara, Iti Saha Mishra, Debashis Saha
    Abstract:

    This paper proposes a new technique for Mobile IP (MIP) Registration by WLAN host (WH) through GPRS network. The home agent (HA) of WH resides in external IP network. The gateway GPRS support node (GGSN) provides foreign agent (FA) functionality for WH in GPRS. After successful attach with GPRS network, WH needs two mandatory passes for MIP Registration with HA. First it establishes PDP (packet data protocol) context in GPRS network and then it sends MIP Registration Request (MRR) to FA at GGSN. This causes a large delay for handoff from WLAN to GPRS. We propose a one-pass technique of MIP Registration through GPRS network to reduce the handoff delay. We transport MIP-Registration Request of WH in the information field of activate-PDP-context Request message to GGSN. Thus MIP Registration message reaches GGSN before completion of PDP context establishment. This technique reduces the control signaling for handoff from WLAN to GPRS. We observed from simulated results that proposed one-pass technique reduces handoff delay by 18% compared to handoff delay in two-pass method.

  • Global gateway-based UMTS/WLAN integration for improved delay performance
    International Journal of Parallel Emergent and Distributed Systems, 2010
    Co-Authors: Sibaram Khara, Iti Saha Mishra, Debashis Saha
    Abstract:

    This paper proposes a loose coupling-based integration between universal mobile telecommunication system (UMTS) and wireless local area networks (WLANs) using mobile Internet protocol (MIP)-based vertical handoff between the two networks. In loose coupling, an integrated network must provide home agent (HA) functionality when a UMTS subscriber moves to WLAN. The position of HA effects the performance of an integrated network. If HA is deployed at gateway GPRS (general packet radio service) support node (GGSN), delay for data as well as control packets increases when both receiving and transmitting mobile stations (MSs) reside in WLAN. Because each packet travels to GGSN through Gi interface, and routed back to WLAN through the same interface. HA can also be deployed in WLAN Internet protocol (IP) network. This improves delay for data packets, but handoff delay from WLAN to UMTS increases because an MS cannot send MIP Registration Request to HA before the establishment of packet data protocol context in UMTS network. We propose an efficient integration by fixing the position of HA in a global gateway router which is deployed in WLAN IP network. The proposed interworking technique reduces packet delay when both sending and receiving MSs are in WLANs. The methods also update location of a user in UMTS as well as WLAN so that he/she is always reachable from each network irrespective of current position. ns-2-Based simulation results show that our new handoff methods reduce handoff delay from UMTS to WLAN by 10% and that from WLAN to UMTS by 18%.

  • Improving Delay Performance in UMTS/WLAN Integrated Networks with Global Gateway Router
    2008 16th International Conference on Advanced Computing and Communications, 2008
    Co-Authors: Sibaram Khara, Iti Saha Misra, Debashis Saha
    Abstract:

    This paper presents efficient methods of vertical handoffs from UMTS to WLAN and vice versa in a loose coupling architecture. When a mobile terminal (MT) moves from UMTS to WLAN, it performs mobile IP (MIP) Registration with home agent (HA). Subsequently, HA needs to perform location update signaling with UMTS network to make the MT reachable from UMTS. If HA is deployed at gateway GPRS support node (GGSN), all incoming packets from the Internet to an MT are routed via GGSN and average packet-delay increases when the MT is in loosely-coupled WLAN. MIP Registration is also affected by the traffics between the Internet and UMTS. To avoid this problem, HA can be deployed in WLAN IP network, but handoff delay from WLAN to UMTS will be more because an MT cannot send MIP-Registration Request to HA before the establishment of PDP context in UMTS network. We propose efficient handoff methods with simple modification in GPRS tunneling protocol (GTP) and HA functionality by placing a global gateway router. Our ns-2 based simulation results show that the proposed technique improves MIP Registration during handoff from UMTS to WLAN and vice versa. It also provides lower end-to-end packet delay for Internet services when an MT is residing in WLAN.

  • ICDCN - A one-pass method of MIP Registration by WLAN host through GPRS network
    Distributed Computing and Networking, 2006
    Co-Authors: Sibaram Khara, Iti Saha Mishra, Debashis Saha
    Abstract:

    This paper proposes a new technique for Mobile IP (MIP) Registration by WLAN host (WH) through GPRS network. The home agent (HA) of WH resides in external IP network. The gateway GPRS support node (GGSN) provides foreign agent (FA) functionality for WH in GPRS. After successful attach with GPRS network, WH needs two mandatory passes for MIP Registration with HA. First it establishes PDP (packet data protocol) context in GPRS network and then it sends MIP Registration Request (MRR) to FA at GGSN. This causes a large delay for handoff from WLAN to GPRS. We propose a one-pass technique of MIP Registration through GPRS network to reduce the handoff delay. We transport MIP-Registration Request of WH in the information field of activate-PDP-context Request message to GGSN. Thus MIP Registration message reaches GGSN before completion of PDP context establishment. This technique reduces the control signaling for handoff from WLAN to GPRS. We observed from simulated results that proposed one-pass technique reduces handoff delay by 18% compared to handoff delay in two-pass method.

Tinton Dwi Atmaja - One of the best experts on this subject based on the ideXlab platform.

  • 2nd International Conference on Sustainable Energy Engineering and Application, ICSEEA 2014 Electric vehicle mobile charging station dispatch algorithm
    2020
    Co-Authors: Tinton Dwi Atmaja, Komp Lipi Bandung
    Abstract:

    Abstract When electric vehicle (EV) arrives at the full occupied fixed charging station (FCS), the EV will have a waiting time for quite some time. EV operator could dispatch mobile charging station (MCS) to the overload FCS providing extra charging pole on the FCS. MCS are determined as an electric vehicle equipped with several charging poles and/or limited energy storage. Dispatched MCS was divided into two categories; MCS_nES and MCS_wES. The MCS_nES was determined as MCS unit equipped with several charging poles without any energy storage. This unit connects the inlet to the power grid and undertake on-grid charging mode to assist the overload FCS. MCS_wES was determined as MCS unit equipped with energy storage so it can undertake off-grid charging to the EV outside FCS without connected to the power grid. The entire algorithm consists of six procedures: Request CS location, EV arrival/Registration, Request MCS, cancel donate MCS, cancel Request MCS and charge complete. An internet-base information management system was designed to facilitate the communication between CS server, EV, MCS and FCS. The procedure helps the EVs to improve their waiting time when they are queued in full FCS. © 2015 The Authors. Published by Elsevier B.V. Peer-review under responsibility of Scientific Committee of ICSEEA 2014.

  • Electric vehicle mobile charging station dispatch algorithm
    Energy Procedia, 2015
    Co-Authors: Tinton Dwi Atmaja, Midriem Mirdanies
    Abstract:

    When electric vehicle (EV) arrives at the full occupied fixed charging station (FCS), the EV will have a waiting time for quite some time. EV operator could dispatch mobile charging station (MCS) to the overload FCS providing extra charging pole on the FCS. MCS are determined as an electric vehicle equipped with several charging poles and/or limited energy storage. Dispatched MCS was divided into two categories; MCS_nES and MCS-wES. The MCS-nES was determined as MCS unit equipped with several charging poles without any energy storage. This unit connects the inlet to the power grid and undertake on-grid charging mode to assist the overload FCS. MCS-wES was determined as MCS unit equipped with energy storage so it can undertake offgrid charging to the EV outside FCS without connected to the power grid. The entire algorithm consists of six procedures: Request CS location, EV arrival/Registration, Request MCS, cancel donate MCS, cancel Request MCS and charge complete. An internet-base information management system was designed to facilitate the communication between CS server, EV, MCS and FCS. The procedure helps the EVs to improve their waiting time when they are queued in full FCS.

C. Douligeris - One of the best experts on this subject based on the ideXlab platform.

  • Group Registration with local anchor for location tracking in mobile networks
    IEEE Transactions on Mobile Computing, 2006
    Co-Authors: C. Douligeris
    Abstract:

    In mobile networks, the location of a mobile user needs to be traced for successful and efficient call delivery. In existing cellular networks, as a mobile user changes his/her location area (LA), a location Registration Request is sent to the home location register (HLR) to update the user profile to point to the new LA. With a large number of mobile subscribers, this conventional Registration strategy will incur a high volume of signaling traffic. We propose a new location Registration strategy, called Group Registration (GR), which efficiently reduces the location Registration cost by reporting location changes to the HLR for multiple mobile terminals (MTs) in a single location update Request message. Specifically, the IDs of the MTs newly moving into an LA are buffered and sent to the HLR for location update in the route response message of the next incoming call to any MT in the LA. An analytic model is developed and numerical results are presented. It is shown that the proposed GR strategy can achieve significant cost reductions compared to the conventional strategy and the local anchor strategy over a wide range of system parameters. Moreover, the GR strategy results in a much smaller call delivery latency than the local anchor strategy.

  • LCN - Group Registration for reducing signaling traffic in location tracking
    28th Annual IEEE International Conference on Local Computer Networks 2003. LCN '03. Proceedings., 2003
    Co-Authors: C. Douligeris
    Abstract:

    In this paper, a new location Registration strategy - group Registrations for mobile networks is proposed, in which instead of sending a location Registration Request to the home location register (HLR) for each Registration area (RA) change of a mobile terminal (MT), the identifications of the MTs newly moving into an RA are buffered and sent to the HLR for location Registration when the next incoming call to the RA occurs, i.e., the buffered MT identifications are forwarded to the HLR in the route response message of the call. Upon RA change, a forwarding pointer is set up from the MT's local anchor to its new visitor location register (VLR), so that incoming calls to the MT can be delivered before the MT's local anchor is changed to its current VLR via the next group Registration. An analytic model is developed and numerical results are presented. It is revealed that compared to the conventional RA-based location Registration scheme, the group Registration strategy can achieve a significant cost savings over a wide range of system parameters.

  • Group Registration for reducing signaling traffic in location tracking
    28th Annual IEEE International Conference on Local Computer Networks 2003. LCN '03. Proceedings., 2003
    Co-Authors: C. Douligeris
    Abstract:

    In this paper, a new location Registration strategy - group Registrations for mobile networks is proposed, in which instead of sending a location Registration Request to the home location register (HLR) for each Registration area (RA) change of a mobile terminal (MT), the identifications of the MTs newly moving into an RA are buffered and sent to the HLR for location Registration when the next incoming call to the RA occurs, i.e., the buffered MT identifications are forwarded to the HLR in the route response message of the call. Upon RA change, a forwarding pointer is set up from the MT's local anchor to its new visitor location register (VLR), so that incoming calls to the MT can be delivered before the MT's local anchor is changed to its current VLR via the next group Registration. An analytic model is developed and numerical results are presented. It is revealed that compared to the conventional RA-based location Registration scheme, the group Registration strategy can achieve a significant cost savings over a wide range of system parameters.