Enhanced Call Admission Control for WiMAX networks

Congestion Control Call Admission Control (CC-CAC) Algorithm for Mobile Broadband Networks

“…In [11], an enhanced call admission control scheme is proposed to mitigate the unfair treatment of non-UGS connections. The scheme uses a bandwidth reservation technique to reserve bandwidth for non-UGS service classes when VOIP call traffic increases above threshold.…”

Performance Evaluation of Dynamic QoS-Aware CAC (DQA-CAC) Algorithm for Broadband Networks

“…The CAC algorithm decides whether or not a new connection request should be admitted or rejected depending on whether the new connection can be accepted and the QoS of existing connections will still be maintained [5]. Many CAC schemes have been proposed over the years [5][6][7][8][9][10][11][12][13][14][15] to ensure efficient resource utilization and or ensure QoS. More recently, a DQA-CAC was proposed in [15] with its performance evaluated against other schemes.…”

Context-based resource management and slicing for SDN-enabled 5G smart, connected environments

“…We analyze a number of CAC mechanisms so as to highlight the outcomes of the aforementioned observations and identify the gaps in the state of the art. From an overview perspective, the majority of the proposed schemes apply the admission control procedure on the level of the eNodeB ( [45], [46], [48], [49], [50]). The rest ( [47], [51]) have a more generic overview of the network environment when admitting or rejecting new UE sessions.…”

“…In addition, most of the schemes utilize some kind of contextual information. In particular, the bandwidth seems to be the most popular option, as the majority of the schemes ([45]- [48], [51], [52]) take into account the available bandwidth when making a decision. The latter two combine the bandwidth parameter with additional contextual information, such as the type of the service request ( [51]), or the policies of the network ( [52]).…”

“…The afore-mentioned solutions target to reduce the call blocking probability by applying fairness models among mobile terminals (single-mode, dual-mode, triple-mode etc.). Also in [48], the authors propose a CAC scheme for services with unfixed-size data packet or non-periodic transmission (known as non Unsolicited Grant Services -non-UGS) focusing on providing fairness among services, with UGS arrival kept constant. Fairness is achieved through reservation of bandwidth when VoIP traffic exceeds a certain threshold.…”