tailieunhanh - GSM Introduction

Cell tương ứng với một vùng phủ của một bộ phận thu phát - kích cỡ của cell được xác định bởi công suất của bộ phận thu phát Đáp ứng đòi hỏi cho dung lượng lớn Sử dụng hiệu quả các tần số Công suất phát nhỏ hơn • Base Station Controller Quản lý tài nguyên vô tuyến của một hoặc nhiều TBS Xử lý các việc | GSM Introduction 26/09/2005 The Main Cellular Standards 26/09/2005 Ericsson’s Cellular Systems 26/09/2005 GSM Specifications 26/09/2005 System Model 26/09/2005 MOBILE STATION 26/09/2005 Mobile Station 26/09/2005 Ericsson's T28s 26/09/2005 Transmission and Receipt in an MS 26/09/2005 ID-1 SIM Card 26/09/2005 Plug-in SIM Card 26/09/2005 SIM CARD STRUCTURE 26/09/2005 SIM card? 8 (16, 32) bit CPU Often at or MHz RAM : 128 bytes- 16 Kbytes ROM : 1 - 32 Kbytes Contains the code EEPROM : 1 - 32 Kbytes Contains the data 26/09/2005 MF DF EF EF DF EF EF EF EF DF MF Master File (root directory, must always be present) DF Dedicated File (directory file, can contain directory and data files) EF Elementary File (data file) 26/09/2005 Smart Card File Names (ISO 7816-4) Reserved FIDs 3F00 MF root directory 0000 EF PIN and PUK #1 0100 EF PIN and PUK #2 0001 EF application keys 0011 EF management keys 0002 EF manufacturing info 0003 EF card ID info 0004 EF card holder info 0005 EF chip info 3FFF file path selection FFFF reserved for future use MF FID File Identifier (2 bytes) FID File Identifier (2 bytes) DF DF Name (1-16 Bytes) usually ISO 7816-5 AID EF Short-FID (5bits) FID File Identifier (2 bytes) 26/09/2005 FID forming rules • EFs in the same directory cannot have the same FID • Stacked DFs cannot have the same FID • EFs in a directory (MF oder DF) cannot have the same FID as the parent directory Application Identifiers (AIDs) • An AID consists of a 5 byte Registered Identifier (RID) containing a country code, an application category and a provider identifier plus an optional Proprietary Application Identifier (PIX) with a variable length of 011 bytes. • AIDs must be registered with an appointed national registration authority and are usually kept confidential. EEPROM pages 100'000 write cycles 64 byte page size Smart Card Internal File Structure EF Header Body Header: file structure info, access control rights, pointer to data body content changes never | GSM Introduction 26/09/2005 The Main Cellular Standards 26/09/2005 Ericsson’s Cellular Systems 26/09/2005 GSM Specifications 26/09/2005 System Model 26/09/2005 MOBILE STATION 26/09/2005 Mobile Station 26/09/2005 Ericsson's T28s 26/09/2005 Transmission and Receipt in an MS 26/09/2005 ID-1 SIM Card 26/09/2005 Plug-in SIM Card 26/09/2005 SIM CARD STRUCTURE 26/09/2005 SIM card? 8 (16, 32) bit CPU Often at or MHz RAM : 128 bytes- 16 Kbytes ROM : 1 - 32 Kbytes Contains the code EEPROM : 1 - 32 Kbytes Contains the data 26/09/2005 MF DF EF EF DF EF EF EF EF DF MF Master File (root directory, must always be present) DF Dedicated File (directory file, can contain directory and data files) EF Elementary File (data file) 26/09/2005 Smart Card File Names (ISO 7816-4) Reserved FIDs 3F00 MF root directory 0000 EF PIN and PUK #1 0100 EF PIN and PUK #2 0001 EF application keys 0011 EF management keys 0002 EF manufacturing info 0003 EF card ID info 0004 EF card holder info 0005 EF chip .