Despite the abundance of frequently changing information, the Web lacks a publish-subscribe interface for delivering updates to clients. The use of naı̈ve polling for detecting updates leads to poor performance and limited scalability as clients do not detect updates quickly and servers face high loads imposed by active polling. This paper describes a novel publish-subscribe system for the Web c...

In this paper variable rate control strategies for real-time VBR stream service over IEEE 802.16 broadband networks are investigated. This is done in the context of real-time streaming using variable bit rate technology. A data rate control mechanism is derived for the case where the downlink channel provides real time polling bandwidth allocation service and remains traffic rate parameter cons...

The paper deals with the scheduling of periodic information flow in FieldBus environment. The scheduling problem is defined from an analytical point of view, giving a brief survey of the most well-known solutions, and illustrating multicycle polling scheduling which is based on the hypothesis that all the production period of the periodic processes to be scheduled are harmonic. Although in some...

In this paper, we proposed a Power Saving Scheme (PSS) multi-hop sensor network using partition clusters. It avoids collision and idle listening time of sensor nodes for better overall network life time. The basic sensor nodes are simple and have limited power supplies, whereas the cluster head nodes are much more powerful and have many more power supplies, which organize sensors around them in...

Long polling is a technique that simulates server push using Ajax requests, allowing Web pages to be updated quickly in response to server events. Unfortunately, existing long poll approaches are difficult to use, do not work well with server-side frameworks based on the Model-View-Controller (MVC) pattern, and are not scalable. Vault is an architecture for long polling that integrates cleanly ...

In this paper, we propose a polling-based scheduling strategy for multiple access control in wireless ATM networks (POSTMAN). A pure centrally controlled polling scheme is adopted in our protocol, therefore no contention channel is needed. The POSTMAN protocol assumes a TDMA/TDD frame format, by which wireless bandwidth is allocated flexibly both among multiple mobile terminals and between down...