scope:

The present document specifies the extension of the basic DLC layer functions in TS 101 761-1 [i] and TS 101 761-2 [2] for direct mode operation in home environment. This DLC home extension specification gives first an overview of the H/2 home system concept. It then describes additional rules and elements to transport DM data over the channels introduced in TS 10 1 76 1- 1 [ 11. Forward Error Correction (FEC) is introduced in the DLC layer to achieve a much lower bit error rate for isochronous packet transport without ARQ. The present document also extends the RLC protocols in TS 101 761-2 [2] to support Constant Bit Rate (CBR) traffic by fixed slot allocation, to enable parameter negotiation for multicast connections, to enable association of multiple CLs for wireless terminals, and to enable direct link (DiL) Power Control. Furthermore, It describes some RLC protocols which are only specific for DM operation in home environment, such as DiL Link Quality Calibration, Dynamic CC Selection, and CC Responsibility Handover. Besides, a PIN and time-window based authentication key distribution protocol is specified for HIPERLAN2 Home Devices (H/2-HDs). The DM services can be used by the IEEE 1394 CL (TS 101 493-3-1 and TS 101 493-3-2 (see Bibliography)) for wireless bridging of different IEEE 1394 buses.

The present document does not contain algorithms, which are only performed locally in a device, but describes rules and elements to transport data over the air interface. The goal is to provide interoperability between devices of different manufacturers.

The present document does not address the requirements and technical characteristics for type approval and conformance testing. These are covered in a separate set of documents.