Abstract
This paper studies the connection admission control for PCS-to-Internet protocol internetworking. In order to provide QoS to the Internet and avoid scalability problems, several recent papers proposed endpoint measurement-based admission control (EMAC) schemes, in which admission decisions are based on measurement results from probe packets exchanged between end hosts. Although EMAC has many desirable features in the wireline networks as shown in previous work, we show in this paper that several distinct characteristics in mobile wireless networks, such as low bandwidth, user mobility, and high bit error rate, make EMAC difficult to implement. Observing that networks offering 3rd-generation (3G) personal communication service (PCS), such as UMTS, already incorporate their own connection admission control functions, we propose a mobile-EMAC (M-EMAC) scheme for PCS-to-IP internetworking. Simulation results show that M-EMAC outperforms EMAC in the wireless domain by improving channel utilization while reducing packet losses.
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