Data communication interface and communication devices incorporating same

Abstract

A communication interface facilitates connection of a plurality of wireless USB compatible hosts with at least a WUSB device in a wireless USB environment at the same time. The communication interface includes a host detector that detects the presence of an active host or a plurality of active hosts, a host communicator for establishing wireless USB connection with a plurality of hosts, and a controller for causing time division multiplexed (TDM) data communication between active hosts and at least one device.

Description

FIELD OF THE INVENTION[0001]The present invention relates to data communication interface and, more particularly, to data communication interface for WUSB applications and communication devices incorporating same.BACKGROUND OF THE INVENTION[0002]Wireless USB (WUSB) is a logical evolution of USB and has become an important standard for many applications because of its various advantages, including flexibility in deployment. The physical layer (“PHY”) of WUSB is described in the Multiband OFDM Aliance (MBOA) UWB PHY specification-“Multiband OFDM Physical Layer Specification” (Revision 1.) Jan. 14, 2005, WiMedia Alliance, which is incorporated herein by reference. PHY currently supports data rates of 53.3, 80, 106.7, 160, 200, 320, 400 and 480 Mb / s and multiple channels. PHY also provides error detection and correction schemes to provide a robust communication channel. Logically, WUSB is a polled, TDMA based protocol, similar to wired USB. In a WUSB system, the host initiates all data ...

AI Technical Summary

Benefits of technology

[0005]By implementing a system in which a second active host will be detected for data connection while the system is already in data connection or communication with a first active host, the conventional constraint of a single host in a system can be alleviated to achieve a more efficient use of resources.

[0012]In a preferred embodiment, data communication between said active hosts and said at least one device is by time division multiplexing (TDM). The use of a TDM scheme will facilitate the sharing of a WUSB device among a plurality of WUSB hosts at the same time. More particularly, the utilisation of a TDM based data exchange scheme or mechanism as an intermediary between a plurality of WUSB hosts and a WUSB devices alleviates the constraint imposed by a conventional WUSB system in which one a single host can operate at a specific time.

Problems solved by technology

An important constraint of conventional WUSB applications is the limitation that there can be only a single host for a WUSB system at a specific time.

Such a constraint in a conventional WUSB system means that no more than one host connections can be supported by one device simultaneously and this would mean a less-than-optimum utilisation of device resources in many instances.

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