In wireless communications, the parameters employed for quality of service (QoS) estimations include the delay, the throughput, the blocking rate and the link cost.
Then, the minimum and maximum thresholds of network loads ( n l th min, n l th max ) in Equation (2) for rtPS, ertPS, and nrtPS can be derived, respectively, depending on the currently estimated system capacity B. The performances are indexed as the connection blocking rate and the achieved QoS in terms of per-flow throughput, i.e., the average data rates supported per established connection.
Figure 12a, b shows the new-connection blocking rate and handoff dropping rate, respectively, when the ratio of handoff arrival rates λ h to new-connection arrival rates λ n is 1 20.
Performance evaluation results obtained using simulation analysis show that the proposed re-authentication protocol enhances handover parameters such as handover latency, handover blocking rate and packet loss rate.
The performance metrics are indexed as the new connection blocking rates and handoff dropping rates.
This article first introduces a novel architecture of the two-hop-relay cellular system in the dead spots, and then analyzes and compares the call blocking rate of the traditional cellular and the two-hop-relay cellular system respectively under three different conditions.
As a consequence, network control plane strategies passed from one extreme to the other, from being totally energy-unaware to exclusively energy-efficient at the expenses of load-balancing, with obvious impacts on the power consumption in the former case and on the blocking rate in the latter one.
In order to compare the various policies and scenarios, three different metrics are considered, the blocking rate, dropping rate, and MOS.
The blocking rate with the Static-max scheme is the highest among all due to its strictest admission criterion.
For example, when the arrival rate λ is equal to 0.8 (λ n = λ h = 0.4) in particular, the blocking rate with FT, DT, and the proposed scheme is about 0.54, 0.53, and 0.47, respectively, while the dropping rate with the three schemes is about 0, 0.007, and 0.009, respectively.
Our numerical results enabled us to validate our analytical model and to quantify the gains obtained by such a joint HM and adaptive relaying scheme, in terms of mean transfer time and blocking rate, as compared to the classical relaying scheme.
