inhibitor bulk In this paper, this level is termed Identification Confidence Level (ICL).To conduct the study of mixed scenarios a Discrete Time Markov Chain (DTMC) Inhibitors,Modulators,Libraries is used to obtain the cumulative distribution function of the identification time of a group of tags of size N. From it the ICL is computed as a function Inhibitors,Modulators,Libraries of the sojourn time. Moreover, based on the previous results, a splitting strategy of the tag set is considered. That is, given a number of tags N entering the checking area we seek to find which is the best size of subsets that minimizes the global duration of the identification process guaranteeing the ICL level.Overall, the results provided in this paper are useful to help manufacturers and system operators to improve the RFID system performance in mixed scenarios.

Designers must rely on physical parameters to control the performance of the system, such as, conveyor belt speed, coverage range, etc. The usefulness of the results of this paper Inhibitors,Modulators,Libraries is twofold. First, given an ICL bound and a packet tag size N the minimum sojourn time is computed in Section 3 and from it the physical parameters of the facility (e.g., conveyor belt speed) can be determined. Second, if tags repackaging is possible the optimal packet size is derived from the results exposed in Section 5. Let us remark that the results derived are valid for any FSA protocol with fixed frame size. This includes most active and passive RFID standards used in logistic currently.The rest of the paper is organized as follows: a review of the related work is provided in Section 2. The analysis of mixed scenarios is addressed in Sections 3 and 4.

Section 5 discusses the feasibility of a splitting strategy in the tag set. Finally, Section 6 points out the main conclusions of the work.2.?Related WorkA large number of studies has been conducted in the last years with the aim of evaluating the performance of passive RFID systems. Most of them focused on suggesting new protocols and algorithms to improve the performance of RFID Inhibitors,Modulators,Libraries installations. The proposals Batimastat cover a wide range of topics, with an emphasis in security, e.g., [7�C9] and anti-collision protocols, e.g., [10�C13]. However, the vast majority of these proposals cannot be implemented in off-the-self readers, due to their high computational cost or due to incompatibilities with the current standards [14].

Hence, additional effort must be also devoted to study configuration and deployment techniques to achieve the best performance of RFID systems with the currently available commercial readers. In [15�C18] the authors performed several empirical studies to determine the factors that degrade performance and reliability only of UHF RFID systems under EPC-C1G2 standard in a static scenario. In [15] the authors compute the read range by means of simulations, while in [16] the authors show how the bit error rate degrades the EPC-C1G2 performance.