Browsing Prof. William Tucker by Title

Now showing items 59-78 of 89

    • Reflection on three years of rural wireless Internet Protocol communication 

      Tucker, William David; Blake, Edwin H.; Marsden, Gary; Pearson, Murray; Westerveld, Rudi (Telkom, 2007)
      This paper reports on three years of research and fieldwork with a rural wireless Internet Protocol communication project. We built a long-range WiFi network and custom communication software to support a rural telehealth ...

    • Reliable communication across ad hoc networks 

      Daniels, Francois; Tucker, William David (Telkom, 2008)
      This paper presents a fully decentralised peer-topeer voice communication tool intended for use across mobile ad hoc networks (MANET) by distributed groups who desired collaboration. We examined the synergy between MANETs ...

    • The role of Outcome Mapping in developing a rural telemedicine system 

      Tucker, William David; Blake, Edwin H. (International Information Management Corporation, 2008)
      We describe the use of Outcome Mapping to guide the design of a rural telemedicine consultation system in South Africa. While Outcome Mapping was not primarily intended to guide design, we show that it tied in well with a ...

    • Rural Wireless Mesh Network Analysis on Mobile Devices 

      Tiemeni, Ghislaine Livie Ngangom; Venter, Isabella; Tucker, William David (Telkom SA, 2014)
      The aim of this research effort is to build an efficient and accurate mobile traffic generator based on open source computer-based traffic generator software. A high performance mobile traffic generator would make the ...

    • Secure contactless smart card transactions on mobile devices 

      Poroye, Adeola; Tucker, William David; Norman, Michael (Telkom, 2009)
      This paper presents work in progress to explore the utility of Near Field Communication technology to secure mobile financial services. The objective is to evaluate the potential of this approach as an upcoming technology ...

    • Security of a Mesh Potato Network in Ad Hoc Mode 

      Mauwa, H.; Tucker, William David (Telkom, 2013)
      Wireless Mesh Networks can provide low cost and reliable community-owned connectivity in developing rural areas. A rural community can use mesh networks to access a wide range of modern information and communication ...

    • SignSupport: a limited communication domain mobile aid for a Deaf patient at the pharmacy 

      Motlhabi, Michael B.; Glaser, Meryl; Tucker, William David (Telkom, 2013)
      This paper discusses a prototype for a communication aid on a mobile phone to support a Deaf1 person visiting a public hospital pharmacy. The aim is to prevent problems of non-compliance to treatment due to poor communication ...

    • SIP presence location service 

      Wu, Wilson; Radovanovic, Aleksander; Tucker, William David (Telkom, 2005)
      This paper presents an innovative use of the Session Initiation Protocol (SIP) for the subscription and notification of geographic information in order to provide a privacy concerned location-based service. SIP is a signaling ...

    • Situation-aware routing based on link quality for static mesh networks with mobile nodes 

      Kobo, Hlabishi Isaac; Tucker, William David; Liu, Xiao Ming (Telkom, 2011)
      Situation-aware routing seeks to improve quality of service on hybrid wireless mesh networks by making routing decisions based on the current situation of the network. BATMAN-adv is a mesh routing protocol that counts ...

    • Situation-aware routing for wireless mesh networks with mobile nodes 

      Kobo, Hlabishi Isaac; Tucker, William David (IIMC International Information Management Corporation, 2012)
      This paper describes a situation-aware algorithm based on the current situation of a mesh network with mobile nodes that improves quality of service. After running laboratory performance tests, we concluded that a ...

    • Socially aware software engineering for the developing world 

      Blake, Edwin H.; Tucker, William David (IIMC International Information Management Corporation, 2006)
      While the social effects of Information Technology (IT) have received much attention there is very little work on targeted methodologies to develop IT applications and content in a developing world environment. This paper ...

    • Socio-economic aspects of voice-over-IP technology in rural SA 

      Roro, Zukile; Rey-Moreno, Carlos; Tucker, William David; Siya, Masbulele Jay (Telkom, 2012)
      This paper describes work in progress towards developing a business case and preliminary design for an 802.11-based mesh network in the remote rural community of Mankosi in the Eastern Cape province of South Africa. Aside ...

    • SoftBridge in action: the first Deaf telephony pilot 

      Tucker, William David; Glaser, Meryl; Lewis, John (Telkom, 2003)
      Following on several partial prototypes, we built an automated Deaf Telephony bridging application with the SoftBridge platform. The SoftBridge performs multi-modal bridging in real-time using Text-to-Speech (TTS) and ...

    • A Softbridge with carrier grade reliability using JAIN SLEE 

      Sun, Tao; Tucker, William David (Telkom, 2004)
      We have built a SoftBridge prototype within a JAIN (Java APIs for the Integrated Network) SLEE (Service Logic Execution Environment). A SoftBridge is a semi-synchronous multimodal IP (Internet Protocol) -based communication ...

    • SoftBridge: a multimodal instant messaging bridging system 

      Lewis, John; Tucker, William David; Blake, Edwin H. (Telkom, 2003)
      Instant Messaging is traditionally a text only a air. However, there are instances when it would be useful to bridge to other types of media, like speech. The SoftBridge is an application framework that enables this kind ...

    • SoftBridge: an architecture for building IP-based bridges over the digital divide 

      Lewis, John; Tucker, William David; Blake, Edwin H. (Telkom, 2002)
      Users and computing equipment have varying capabilities that include the abilities to exchange text and audio, engage in high bandwidth communication, etc. As the technological options increase, e ective communication ...

    • Telecommunications bridging between deaf and hearing users in South Africa 

      Glaser, Meryl; Tucker, William David (2004)
      This paper presents a description of telecommunications for Deaf people in South Africa by contrasting the situation in the developed world. We explain the main motivations for providing a locally appropriate solution. ...

    • Telemedicine using VoIP combined with a store and forward approach 

      Chetty, Marshini; Tucker, William David; Blake, Edwin H. (Telkom, 2004)
      Rural areas in South Africa have unique conditions such as remoteness and scarcity of reliable public facilities. Information and Communication Technologies (ICTs) introduced into these areas must be suitable for these ...

    • Telgo323: an H.323 Bridge for deaf telephony 

      Penton, Jason; Tucker, William David; Glaser, Meryl (Telkom, 2002)
      We have developed a prototype bridge that relays text and speech between Teldem, a text telephone for the Deaf, and a standard telephone or H.323 endpoint. Telgo323 uses modified H.323 media gateways and open source Text ...

    • Towards a scalability model for wireless mesh networks 

      Om, Shree; Rey-Moreno, Carlos; Tucker, William David (Telkom, 2015)
      Zenzeleni mesh network is a wireless ad-hoc mesh network that provides voice services using public analogue telephones to the Mankosi community in the Eastern Cape Province. We would like to improve on the network ...