Abstract: A computer-implemented method and an apparatus facilitate user chat interactions. A chat widget offering chat-based assistance is displayed on one or more Web pages of an enterprise Website. In response to a user selection of the chat widget, a chat window is displayed at a first predetermined position on a Web page. The chat window is repositioned to a second predetermined position in response to a user input indicative of provisioning of a text input. The repositioning of the chat window enables display of a virtual keyboard. The placement of the chat window and the virtual keyboard enables the user to view a substantial portion of the Web page. The chat window is caused to scroll with the Web page in response to a Web page scroll input provided by the user and slide back to a previous position subsequent to completion of a scroll movement of the Web page.

Abstract: A computer-implemented method and an apparatus facilitate user chat interactions. A chat widget offering chat-based assistance is displayed on one or more Web pages of an enterprise Website. In response to a user selection of the chat widget, a chat window is displayed at a first predetermined position on a Web page. The chat window is repositioned to a second predetermined position in response to a user input indicative of provisioning of a text input. The repositioning of the chat window enables display of a virtual keyboard. The placement of the chat window and the virtual keyboard enables the user to view a substantial portion of the Web page. The chat window is caused to scroll with the Web page in response to a Web page scroll input provided by the user and slide back to a previous position subsequent to completion of a scroll movement of the Web page.

Abstract: The throughput of a Request-to-Send and Clear-to-Send (RTS/CTS) based distributed media access control protocol is improved by reserving the medium in a hierarchical fashion. The shared medium is reserved for two stations called the participants. During the reserved period, a master (or primary) attribute and a slave (or secondary) attribute are given to the participants and the medium is shared between them using any suitable coordination algorithm. During the reserved time, the secondary can signal the primary station that it has data to send to the primary station and request that the primary and secondary roles or attributes be exchanged. In the case that a role exchange takes place, control of the medium is transferred from one station to another and data transfer in an opposite direction can take place without requiring another reservation.