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•EGPRS at 8.8...59.2 kbps in up to 8 time slots
•Modulation and Coding Schemes (MCS 1...9
•Link adaptation combined with Incremental Redundancy (LA / IR).
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EDGE Phase 2 will bring improvements for voice and possibly data services:
•Introduction of real time packet services such as VoIP and Video over IP.
•Handover for packet-switched connections to enable real time services.
•"Enhanced AMR" and "Hi-Fi" speech codecs.
•Multi-call utilizing simultaneous voice and data.
•Co-operation with UMTS Radio Access Networks.
phase2ÊÇphase1µÄ½ø»¯£¬Æ«ÖØÓÚʵʱÊý¾Ý´«Ê䣬ÀýÈçvoipµÈ
•EGPRS at 8.8...59.2 kbps in up to 8 time slots
•Modulation and Coding Schemes (MCS 1...9
•Link adaptation combined with Incremental Redundancy (LA / IR).
phase2ÊÇ3gpp r4/5Ìá³öµÄ£º
EDGE Phase 2 will bring improvements for voice and possibly data services:
•Introduction of real time packet services such as VoIP and Video over IP.
•Handover for packet-switched connections to enable real time services.
•"Enhanced AMR" and "Hi-Fi" speech codecs.
•Multi-call utilizing simultaneous voice and data.
•Co-operation with UMTS Radio Access Networks.
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- CCCH£¨PIM£©One Phase½ÓÈ룺ÔÚEGPRS TBFµÄ½¨Á¢¹ý³ÌÖУ¬Immediate Assignment½ö¸øEGPRS MS·ÖÅäÒ»¸öPDCHÐŵÀ£¬¾¡¹ÜϵͳÒѾ֪µÀMSµÄEGPRS multi-slot class£¬ÕâÊÇÒòΪImmediate Assignment²»ÄÜ·ÖÅä¶àÓÚÒ»¸öPDCH¡£
- £¨P£©CCCH£¨PIM£©Two Phase½ÓÈ룺MSÔÚPacket Resource RequestÏûÏ¢µÄMobile Station Radio Access Capability IEÖÐÏòϵͳ±¨¸æÆäÎÞÏßÄÜÁ¦¡£
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