MOBILE TELECOMMUNICATIONS PROTOCOLS FOR DATA NETWORKS phần 8 pps

... most two 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: ... 9 Routing protocols in mobile and wireless networks Learning objectives After completing this chapter, you are able to • demonstrate an understanding of routing protocols...

Ngày tải lên: 13/08/2014, 22:21

... Chapters 8 through 12 describe architecture of mobile and wireless networks, their protocols, and quality-of- service (QoS) issues. MOBILE TELECOMMUNICATIONS PROTOCOLS FOR DATA NETWORKS 2 MOBILE ... by the networks and protocols. Mobile networks must function efficiently by using their protocols, performing routing and handoff for mobile users. This book focuses...

Ngày tải lên: 13/08/2014, 22:21

... data access at 384 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 ... settings, and scheduling information and address books. The profile directory is a generic database for maintaining user information, which includes application-specific data. Custo...

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

... 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 ... and that data conforming to an abstract schema can be converted to and from XML for transport. The Working Group should propose a mechanism for serializing data representing no...

Ngày tải lên: 13/08/2014, 22:21

... entities, which contain either parsed or unparsed data. Parsed data is made up of characters, some of which form character data and some of which form markup. Markup encodes a description of the ... RDF data model can therefore resemble an entity-relationship diagram. The RDF data model, however, provides no mechanisms for declaring these properties, nor does it provide any mechani...

Ngày tải lên: 13/08/2014, 22:21

... mobility approaches. 8. 4.1 IEEE 80 2.11a and IEEE 80 2.11b IEEE 80 2.11a is an extension to 80 2.11 that applies to WLANs and provides up to 54 Mbps in the 5-GHz band. IEEE 80 2.11a uses an Orthogonal ... 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 infor...

Ngày tải lên: 13/08/2014, 22:21

... ones. PROBLEMS TO CHAPTER 8 159 8. 8: What is BSS? 8. 9: What is the architecture of the DS? 8. 10: What is the role of a portal? 8. 11: What are the architectural services of IEEE 80 2.11? 8. 12: What are the ... communication end point, for instance, a laptop. It also supports intermediate devices, which form part of a communications link, for instance, modems. 1 68 ROUTING PR...

Ngày tải lên: 13/08/2014, 22:21

... ALGORITHM 205 Table 11.1 Required number of VCs for different schemes N 1 N 2 N 3 Total r = 1 11. 78 24 0 35. 78 r = 3 20.6 10 54 84 .6 r = 5 22 .8 5 66 93 .8 r =∞ 23.56 0 72 97.56 VCT 1155 0 0 1155 the ... 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 tec...

Ngày tải lên: 13/08/2014, 22:21

... (WAE) 85 , 87 , 93– 98, 152 Wireless Application Protocol (WAP) Forum 74, 78, 79, 88 , 134 Wireless Application Protocol (WAP) 75, 78, 85 , 87 , 121, 152, 157 Wireless ATM (WATM) 41, 69, 181 , 184 , 194, ... 11 mobile agent-based service configuration 23 mobile agent-based service implementation 11 mobile host (MH) 182 Mobile Multi-User Platform (MMUP) 185 , 188 , 189 Mobile Ne...

Ngày tải lên: 13/08/2014, 22:21