Tài liệu Điện thoại di động mạng lưới Radio P12 ppt

... DLC ATM and Mobility Support Management Radio Resource Application Layer Convergence SAAL AAL-X ATM RADIO DLC RADIO PHY RADIO PHY PHY ATM PHY Q2931 m Radio Resource and Mobility Management SAAL Q2931 m  ✂✁☎✄✝✆✟✞✡✠☞☛☎✌ ✍ ✞✡✄✝✁☎✌✎✁☎✏☎✏✒✑✓ ✂✔ ✍ ✞✡✄✝✁☎✌✎✁☎✏☎✏✕✑✖ ✂✔✗✑✓✘☎✘☎✁☎✏☎✏✒✙✛✚✂✞✎✠✢✜ ✑✖ ✂✔✤✣✦✥✧✞★✜✩✘✢✪ ✔✒✚✂✫☞✞✡✌✎✞✬✜✮✭✰✯✮✱✛✠✂✪☞☛☎✠✂✘☎✁☎✲ Figure ... architecture Support Mobility Applicat...

Ngày tải lên: 24/12/2013, 13:17

... TC Dialling In Trunk Code DDI Direct DDI NDCCC SN IP NDC = TC + DN Destination Code National Evaluation max. 6 Digits SA ISDN-Sub-Address max. 40 Digits Subscriber Number Nat. No. = max. 15 Digits ... protocol, called the radio link protocol (RLP), is used, which corresponds to layer 2 of the ISO/OSI reference model. 3.9.4.1 Characteristics of the Radio Link Protocol The radio link p...

Ngày tải lên: 15/12/2013, 06:15

... the technical parameters for the radio interfaces of the digital public mobile radio systems (GSM, USDC and PDC). 318 4 Other Public Mobile Radio Systems Studies show that the user capacity in ... (MPT) made the decision in April 1989 to develop a digital mobile radio standard. Compared with existing ana- logue systems, this digital mobile radio system was to be more cost-effective a...

Ngày tải lên: 15/12/2013, 06:15

... to integrate worldwide the di erent mobile communications systems available today, such as mobile telephone and telepoint, trunked radio, data radio, and satellite radio systems, into one system. What ... IMT 2000 327 • R1: radio interface between mobile station (MS) and base station (BS) • R2: radio interface between personal station (PS) and personal base station • R3: radio inte...

Ngày tải lên: 15/12/2013, 06:15

... convolutional coder after coding. 6 Trunked Mobile Radio and Packet Data Radio In addition to the public radio telephone service and the paging service, there are other radio services that are not ... In Proceedings of 6th International Symposium on Personal and Indoors Mobile Radio Communications, pp. 799–802, The Hague, Netherlands, Sept. 1994. 372 6 Trunked Mobile Radio and Pac...

Ngày tải lên: 15/12/2013, 06:15

... first ever mobile radio system in which the base station as well as the mobile terminal transmit on the same radio channel. Yet the two transmission directions are not separated by di erent frequencies; ... range between 864 Table 8.2: The main parameters of cordless digital telephone systems System CT2/CAI DECT Signal transmission Digital Digital Frequency band [MHz] 864–868 1880–1900 No...

Ngày tải lên: 24/12/2013, 13:17

... Channel grid [MHz] 24.549 . . . 26.061 PMP radio relay 3.5, 7, 14 17 Radio relay for Hiperlan/4 3.41 . . . 3.60 PMP radio relay 3.5 2.5 . . . 2.67 PMP radio relay 1.88 . . . 1.9 DECT-WLL 1.7 RFP) ... re- stricted area, e.g., in a radio cell defined by an internal base station. Systems in which users enjoy the same kind of mobility as in cellular mobile radio Mobile Radio Networks...

Ngày tải lên: 24/12/2013, 13:17

... importance. This direct control has now been replaced by indirect dialling systems, which is why it is necessary to establish an association between telephone number and location of user B. In an indirect dialling ... to minimize the number of digits to be dialled. • It must be possible to dial the UPT number from any terminal in the PSTN. Therefore digits have already been reserved (digits 0...

Ngày tải lên: 26/01/2014, 15:20

... have a software radio that, using the software- defined configuration of the mobile terminal, adapts to the grade of service 16.3 Closing Remarks 807 of the radio interface, depending on the service ... situation and to the service to ensure that the software radio is switched to the corresponding mode and the most favourable mobile radio service is being used. UMTS-based PLMNs have bee...

Ngày tải lên: 26/01/2014, 15:20

... Radio TETRA digital Satellite Radio Broadband Radio Cellular Radio Data Packet Radio Trunked Radio Paging Systems Telephony Cordless 1974: Private MPT 1327Mobile Radio D-Netz digital 1998: Iridium Figure ... digital 1992: Data Radio Modacom INMARSAT-C 1988: LEO Satellite Sys. W-ATM 2000:1997:1996: W-LAN 802.11 HIPERLAN/1 2002: UMTS 1991: DECT digital 1991: Trunked Radio anal...

Ngày tải lên: 15/12/2013, 06:15