In this paper, we propose contribution-level -based opportunistic flooding for wireless multihop networks that achieves outstanding transmission efficiency and reliability. The predetermined relay node may fail to receive the broadcast packet owing to the inherent instability in wireless networks. On the other hand, our proposed flooding increases reliability by applying the concept of opportunistic routing […]
Jan
Jan
Next-generation digital broadcasting system transmits the DASH segment files. Delays and inefficient use of resources are the major challenges in the transmission of DASH segment files in broadcasting systems. Because the size of DASH segment files varies even though the files have the same quality, and broadcasting systems uses the fixed resource. Delay is an […]
Feb
Recently, there has been an increase in user interest in multimedia services, such as VoIP, using mobile stations equipped with the IEEE 802.11 Wireless Local Area Network (WLAN) module in fast moving environments like Vehicle Ad hoc Networks (VANETs). In order to provide mobility and guarantee bandwidth in a wide area, a handoff among access […]
Feb
We propose MBAP(Multi-rate Broadcast Active Probing) technique to get the right measurements for link quality in Wireless Mesh Network (WMN). Most routing protocols for WMN make use of link quality-aware routing metrics, such as ETX(Expected Transmission Count) and ETT(Expected Transmission Time), while the hop count is usually used in MANET (Mobile Ad-hoc NETwork). A broadcast […]
Feb
The Wi-Fi broadcast system using the broadcast packet transmits the multimedia contents to many local mobile users in real time and it must use the FEC technology to recover the broadcast packet loss, because Media Access Control layer retransmission is not supported for broadcast packet loss. Equally adding the redundant packet is not very efficient […]
Sep
In the wireless sensor network, there are cluster based routing protocols for the network monitoring like LEACH. In earlier works, the data aggregation periods of these protocols are the same, although each cluster can have different environments or situations for time-varying. Thus, it occurred to inefficiently consume energy in non-interested areas. In addition, it is […]
May
DTN (Delay- or disruption- tolerant networking)is often found in heterogeneous networks, mobile or extreme terrestrial networks, or planned networks in space. In this paper,we examine the metropolitan bus network as a research target of DTN. We analyze the metropolitan bus network through spatial and temporal modeling by reusing the existing database of the Bus Information […]
May
ecent trend in the research of networking in defense development tends to communicate via DDS (Data Distribution Service)-based middleware, since target environments often integrate thousands of nodes through heterogeneous networks. Heterogeneous network often consists of wired and wireless coexisted network; however constructing DDS-based system in the wireless network is challenging work because recent DDS is […]
May
This paper presents an interactive data broadcast algorithm for T-DNB/CDMA converged environment. The proposed algorithm improves responsiveness to user requests and resource efficiency by adapting to the various changes of user requests. Authors: Hyocheol Jang, Chunghyun Ahn, Byungjun Bae, Jongdeok Kim Conference: Proceedings of IEEE Vehicular Technology Conference Publisher: IEEE Publish Date: 2006. 5. 11 Proceeding: PDF
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