FIELD: physics, communications.
SUBSTANCE: invention relates to wireless communication. A method and an apparatus for serving high speed downlink shared channel (HS-DSCH) cell change are disclosed. A wireless transmit/receive unit (WTRU) may receive a high speed shared control channel (HS-SCCH) order over the target cell and/or a radio resource control (RRC) reconfiguration message over a source cell indicating a serving HS-DSCH cell change to the target cell. The WTRU may act upon the received information elements of the RRC reconfiguration message if the RRC reconfiguration message is received prior to the HS-SCCH order, and act upon the pre-configured serving cell information if the HS-SCCH order is received prior to the RRC reconfiguration message.
EFFECT: providing reliability and avoiding conflicts during serving cell change.
20 cl, 4 dwg
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