
PRODUCT OVERVIEW
General Description
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2.10
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19.01.2007
2. Product
Overview
The DECT transceiver module HW 86012 and the Frequency Hopping Spread Spectrum
(FHSS) transceiver module HW 86022 are highly versatile and powerful engines for popular
and advanced DECT / FHSS applications. They provide both RF and baseband signal
processing as well as a complete protocol stack and allow for data and voice transmission.
2.1 General
Description
The protocol stack has been implemented as firmware running on the micro controller of the
HW 86012/22. It comprises the DECT protocol layers MAC (EN 300 175-3), DLC (EN 300
175-4) and NWK (EN 300 175-5). Data service is provided according to the DSP C.1/C.2
profile based on LU3 connection. It offers payload data rates of 26 kbit/s in point-to-point
applications and up to four times 26 kbit/s in point-to-multipoint applications.
Aditionally the CLDPS (Connection-Less DECT Packet System) protocol is implemented. It
offers connection-less, packed based data transmission on DECT with payload data rates of
500 kBit/s per radio cell. A base station allocates up to 12 DECT channels (time / frequency
multiplexing) and uses a dedicated slot format. The capacity can dynamically be shared
between the subscribed portables according to the actual demand. CLDPS allows 64
simultaneously connected portables and therefore is capable to support even large wireless
networks.
Based on CLDPS lower layer protocol, an TCP/IP stack is implemented. This allows PT
mode modules to operate with CLDPS base stations (such as HW 8614 Ethernet Base
Station) using TCP/IP protocol.
Data-Unwired embedded DECT / FHSS modules support both connection-based DECT and
packet-based CLDPS, which can be configured by software.