Method and apparatus employing transparent session initiation protocol (SIP) technique for communication especially between a user device in one domain and an application/service provide in an external domain. The transparent SIP technique is usable in wired or wireless systems such as 3G systems and wireless local area networks (WLANs).

 
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> Encoding of signals to facilitate traffic analysis

> Wireless communication method and apparatus for detecting and decoding enhanced dedicated channel hybrid automatic repeat request indicator channel transmissions
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