Proposta de política de adaptação de enlace EDGE como caminho de evolução para provimento de serviços IMS de terceira Geração / Proposal for a policy of EDGE link adaptation as way of evolution for provisions of third generation IMS services

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

With the increasing demand for wireless packet data services, 3G wireless carriers today are faced with the challenge of offering multimedia applications with quality of service requirements while at the same time effectively utilizing precious wireless bandwidth. These new data services require increased bandwidth and data throughput, due to their intrinsic nature. This increasing demand for bandwidth and throughput has driven the work of third generation standardization committees, resulting in the specification of improved modulation and coding schemes, besides the introduction of more advanced link quality control mechanisms. Among the several proposals for the evolution from 2G to 3G, GPRS (General Packet Radio Services) and EDGE (Enhanced Data Rates for GSM Evolution) stand out as transitional solutions for existing GSM networks (it is also referred to as 2.5G system). This work considers to presenting a proposal of politics of link adaptation, that it support services of 3rd generation, based on GERAN model (GSM EDGE Radio Access Network) defined by 3GPP (3rd Generation Partnership Project), and allows to control session admission in subsystem IMS using a IP signaling protocol known as SIP. This proposal is based on the theoretical and experimental results, measured in the field, in a real network.

ASSUNTO(S)

gsm / edge redes móveis adaptação de enlace ip multimídia subsystem telecomunicacoes

ACESSO AO ARTIGO

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