tokens: ['in', 'WCDMA', 'this', 'solution', 'is', 'not', 'applicable', 'due', 'to', 'soft', 'handover', 'procedure', 'defined', 'for', 'the', 'dedicated', 'traffic', 'channels', 'Thus', 'the', 'AMR', 'mode', 'control', 'function', 'should', 'be', 'a', 'part', 'of', 'the', 'RNC', 'functionality', 'The', 'control', 'of', 'the', 'AMR', 'mode', 'is', 'part', 'of', 'the', 'RRM', 'strategies', 'due', 'to', 'its', 'implications', 'on', 'reserving', 'and', 'controlling', 'resources', 'from', 'the', 'air', 'interface', 'Figure', '', 'In', 'the', 'WCDMA', 'the', 'AMR', 'mode', 'adaptation', 'is', 'carried', 'out', 'with', 'the', 'aid', 'of', 'AMR', 'mode', 'control', 'function', 'which', 'is', 'responsible', 'for', 'detecting', 'the', 'need', 'of', 'the', 'AMR', 'mode', 'adaptation', 'and', 'to', 'initiate', 'required', 'procedures', 'to', 'change', 'the', 'current', 'AMR', 'mode', 'to', 'the', 'newly', 'selected', 'AMR', 'mode', 'The', 'AMR', 'mode', 'change', 'request', 'can', 'be', 'made', 'with', 'the', 'aid', 'of', 'the', 'AMR', 'mode', 'commands', 'which', 'are', 'sent', 'from', 'the', 'RNC', 'either', 'to', 'the', 'Transcoder', 'for', 'downlink', 'data', 'transfer', 'or', 'to', 'the', 'UE', 'for', 'uplink', 'data', 'transfer', 'In', 'principle', 'the', 'supported', 'AMR', 'mode', 'adaptation', 'can', 'be', 'asymmetric', 'which', 'implies', 'the', 'possibility', 'to', 'use', 'different', 'AMR', 'modes', 'in', 'uplink', 'and', 'downlink', 'during', 'active', 'speech', 'call', 'Therefore']