Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2007-12-25
2007-12-25
Milord, Marceau (Department: 2618)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S352000, C370S503000, C370S208000, C709S232000, C709S230000, C455S450000, C455S509000, C455S426100
Reexamination Certificate
active
10403109
ABSTRACT:
Apparatus communicating with a mobile and a remote base station. The mobile is assumed to have a coding unit capable of operating in at least one mode selected from a set, each mode in the set being associated with a coding requirement. The set is characterized in that it has at least one mode that is associated with a greater coding requirement than a “designated” mode. Also, the apparatus comprises a control entity suitable to establish a tandem-free transfer of data received from the mobile to the remote base station. The control entity is operative to send control information to the mobile to cause the coding unit therein to operate in the designated mode prior to establishment of the tandem-free transfer. By forcing the mobile to operate in the designated mode, it is guaranteed that the tandem-free transfer can be achieved.
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3GPP TS 28.062 V4.2.0 (Dec. 2001) 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Inband Tandem Free Operation (TFO) of speech codecs; Service description; Stage 3 (Release 4).
3GPP TS 28.062 V4.3.0 (Mar. 2002) 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Inband Tandem Free Operation (TFO) of speech codecs; Service description; Stage 3 (Release 4).
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ETSI TS 128 062 V4.2.0: “Inband Tandem Free Operation (TFO) of Speech Codecs; Service Description Stage 3 (3GPP TS 28.062 version 4.2.0 Release 4)”; Digital Cellular Telecommunications System (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); URL:http://www.esti.org; Dec. 2001.
European Search Report PCT/CA03/00460; Jun. 16, 2003.
Milord Marceau
Nortel Networks Limited
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