This paper presents and compares three model-based reinforcement learning schemes for admission policy with handoff prioritization in mobile communication networks. The goal is to reduce the handoff failures while making efficient use of the wireless network resources. A performance measure is formed as a weighted linear function of the blocking probability of new connection requests and the ha...

This paper comes up with a mechanism of optimal joint call admission control based on different service types. Considering practical wireless transmission environment, it divides the heterogeneous wireless network into several areas and also defines the peak rates that its users could get in each area. The process of call admission control is modeled into a semi-Markov process for the two typic...

The problem of handoffs in cellular networks is compounded in a low earth orbit (LEO) satellite-based cellular network due to the relative motion of the satellites with respect to a stationary observer on earth. Typically, the velocity of motion of mobiles can be ignored when compared to the very high velocity of the footprints of satellites. We exploit this property of LEO satellite systems an...

Nowadays, both of network operators and regulators are concerning about adding new end user's features. These features may be added to future networks and current deployed ones. In order to achieve that, network performance as well as its availability must be taken into consideration side-byside for having a successful network operation. The process of coupling of them will be beneficial in the...

In heterogeneous wireless network, vertical handoff plays an important role for guaranteeing quality of service and overall performance of network. Conventional vertical handoff trigger schemes are mostly developed from horizontal handoff in homogeneous cellular network. Basically, they can be summarized as hysteresis-based and dwelling-timer-based algorithms, which are reliable on avoiding unn...

In wireless cellular networks, in order to ensure that ongoing calls are not dropped while the owner mobile stations roam among cells, handoff calls may be admitted with a higher priority as compared with new calls. Since the wireless bandwidth is scarce and therefore precious, efficient schemes which allow a high utilization of the wireless channel, while at the same time guarantee the QoS of ...

Mobile users will have a variety of services including high-speed data and real-time multimedia services with Next Generation Wireless Systems (NGWS). A unified and efficient handoff management is one of the key issues for NGWS to support global roaming of mobile users among different network architectures. In this paper, different artificial intelligence algorithms such as genetic algorithms (...

In this paper, we propose a novel and simple soft handoff algorithm That helps fair distribution of network resources among users. Due to centralized soft handoff mechanism, no further computational complexity is added to the mobile sets. Because we use Fuzzy Inference system (FIS) in adapting thresholds of our algorithm, algorithm is able to release the traffic channels at high traffic load fo...

In Long Term Evolution (LTE) 3GPP Networks, several works were done on call admission control but these works rarely considers the channel quality in the controlling process. The existing techniques don’t provide differentiation between the new call and the handoff call. We propose to design a call admission control algorithm based on channel state. This call admission control algorithm include...

Cognitive radio can significantly improve the spectrum efficiency, and spectrum handoff is considered as an important functionality to guarantee the quality of service (QoS) of primary users (PUs) and the continuity of data transmission of secondary users (SUs). In this paper, we propose an analytical framework based on a preemptive repeat identical (PRI) M/G/1 queuing network model to characte...