MOBILE TELECOMMUNICATIONS PROTOCOLS FOR DATA NETWORKS phần 4 pot

... problems 4. 1: What is the role of network and native service access points? 4. 2: What is the RS-ISMA? 4. 3: What are the functions of HAMAC protocol? 4. 4: How is transmission performed in ARCMA? 4. 5: ... the frame configuration information, the connection setup, the allocation information, the request information, and the data to all mobile devices. The information and the data...

Ngày tải lên: 13/08/2014, 22:21

... architecture of mobile and wireless networks, their protocols, and quality-of- service (QoS) issues. MOBILE TELECOMMUNICATIONS PROTOCOLS FOR DATA NETWORKS 2 MOBILE AGENT PLATFORMS AND SYSTEMS • ... (MAC) protocols for wideband wireless local access 41 3.2 .4 IEEE 802.11 41 3.2.5 ETSI HIPERLAN 44 3.2.6 Dynamic slot assignment 46 3.3 Summary 50 Problems to Chapter...

Ngày tải lên: 13/08/2014, 22:21

... bandwidth of existing mobile phone systems is sufficient for data and voice, but it is still insufficient for real-time multimedia traffic. ATM has more efficient networking technology for integrating services, ... better performance than the Hop-limited handoff scheme in certain cases. Its performance can be adjusted by tuning the threshold at which it performs the chain routing calcul...

Ngày tải lên: 13/08/2014, 22:21

... data access at 3 84 kb s −1 nominal data rates for macrocellular wire- less access. WCDMA provides simultaneous voice and data services. WCDMA is the radio interface technology for Universal Mobile ... overhead for OFDM block guard time, synchronization, slot separation, and DPA control, a peak data rate of 2.1296 (3.3792 × 22/ 24 × 11/13 × 1 04/ 128) Mb s −1 is available f...

Ngày tải lên: 13/08/2014, 22:21

... the frame configuration information, the connection setup, the allocation information, the request information, and the data to all mobile devices. The information and the data can be broadcast using a ... suitable form for the wireless medium. Encryption is performed for confidentiality while fragmentation and Forward Error Correction (FEC) coding functions are added for better pro...

Ngày tải lên: 13/08/2014, 22:21

... 2 1 7 12 15 17 16 19 20 6 8 11 13 4 9 10 14 18 21 You have 4 new voice mails Accept Deny Select a voice mail to retrieve 1. 7:30 PM Today 2. 5: 24 PM 5/25/02 3. 1:03 PM 5/25/02 4. 6:56 AM 5/23/02 Playing message Mobile client User agent Repository GET ... entities, which contain either parsed or unparsed data. Parsed data is made up of characters, some of which form character da...

Ngày tải lên: 13/08/2014, 22:21

... of profile information by each server/gateway/proxy is hard to predict. Therefore, gateways/proxies should forward all profile information to the server. Any requests for profile information that ... used for server-initiated transactions, for example: 1. Server sends to proxy 2. Proxy retrieves profile from client (or checks against a cache) 3. Client returns profile 4. Proxy formats infor...

Ngày tải lên: 13/08/2014, 22:21

... communication end point, for instance, a laptop. It also supports intermediate devices, which form part of a communications link, for instance, modems. 168 ROUTING PROTOCOLS IN MOBILE AND WIRELESS NETWORKS LMS. ... other Blue- tooth devices; • quality of service management for higher layer protocols. 172 ROUTING PROTOCOLS IN MOBILE AND WIRELESS NETWORKS request packet prop...

Ngày tải lên: 13/08/2014, 22:21

... hops. 180 ROUTING PROTOCOLS IN MOBILE AND WIRELESS NETWORKS Practice problems 9.1: What is an ad hoc network? 9.2: What are the two categories of routing protocols for ad hoc networks? 9.3: What ... PRP algorithm waits for a free channel. A reserved channel corresponds to the potential arrival Figure 10 .4 The PRP reservation principle. 1 94 HANDOFF IN MOBILE AND WIRELESS N...

Ngày tải lên: 13/08/2014, 22:21

... 33, 41 44 , 50, 142 – 145 , 157, 159, 160 IETF Policy on Character Sets and Language 123 Independent BSS (IBSS) 144 , 145 , 160 Industrial, Scientific and Medical (ISM) 140 , 146 Infrared (IR) 139, 140 , ... point 1–2 European Telecommunications Standards Institute (ETSI) 41 , 44 , 46 , 143 Extended Service Set (ESS) network 144 Extensible Markup Language (XML) 74, 76, 78–85, 95, 111...

Ngày tải lên: 13/08/2014, 22:21