Handoff Performance Research Articles

Comparing the impact of PASS-BAR handoff education for new nurses between simulation-based and case-based approaches: A quasi-experimental design

AimTo develop a patient, assessment, situation, safety concerns, background, action, recommendation (PASS-BAR) handoff training program and compare the educational effects of the program between simulation-based (experimental group) and case-based (control group) groups using repeated measures among new nurses. BackgroundNew nurses are not well prepared to provide clear handoff reports because nursing schools and healthcare institutions rarely offer structured programs or training for handoff communication practices. DesignThis study used a pretest–posttest quasi-experimental design with repeated measures with two non-randomized groups. MethodsThis study targeted new nurses with less than 12 months of experience and was conducted at a university hospital’s clinical nursing education center in Seoul, South Korea, between September 2022 and April 2023. Seventeen participants were allocated to the experimental group and 17 participants to the control group. Both groups were given lectures and exercises for both scenarios. Participants were asked to complete a questionnaire on nursing handoff competency, handover performance competency and perceived self-efficacy of handoff at pre- and posttest and two weeks after training. Satisfaction with learning was measured after the intervention. ResultsWe developed a simulation-based learning handoff program that includes a simulated handoff performance and debriefing and a case-based learning handoff program that includes discussion, handoff performance and feedback. This study found no immediate difference in the educational effect of PASS-BAR handoff training between simulation-based learning and case-based learning; however, over time, simulation-based learning was more effective than case-based learning in improving nursing handoff competency and handover performance competency. ConclusionsBased on the results of this study, a simulation-based handoff training program using PASS-BAR can enhance handoff competencies and help new nurses strengthen their communication skills to understand patients and convey important information. Tweetable AbstractDeveloping a simulation-based handoff training program using PASS-BAR helps nurses strengthen their communication skills with colleagues.

Fog-computing based mobility and resource management for resilient mobile networks

Mobile networks are facing unprecedented challenges due to the traits of large scale, heterogeneity, and high mobility. Fortunately, the emergence of fog computing offers surprisingly perfect solutions considering the features of consumer proximity, wide-spread geographical distribution, and elastic resource sharing. In this paper, we propose a novel mobile networking framework based on fog computing which outperforms others in resilience. Our scheme is constituted of two parts: the personalized customization mobility management (MM) and the market-driven resource management (RM). The former provides a dynamically customized MM framework for any specific mobile node to optimize the handoff performance according to its traffic and mobility traits; the latter makes room for economic tussles to find out the competitive service providers offering a high level of service quality at sound prices. Synergistically, our proposed MM and RM schemes can holistically support a full-fledged resilient mobile network, which has been practically corroborated by numerical experiments.

시뮬레이션 기반 인수인계 교육이 간호대학생의 지식, 비판적 사고 성향, 임상 판단력에 미치는 효과

Purpose Clinical nurses work in three shifts due to the specificity of the ward's work, and there is a handoff of nursing work for each shift. The nurse's handoff maintains the continuity of nursing care, ensuring the safety of patients and the quality of nursing care and medical care. Handoff is an important nursing activity that exchanges patient information, and it is the responsibility and duty of medical staff to accurately deliver this information. In addition, simulation-based education is an educational method that provides opportunities for clinical practice without having harmful results in nursing and medicine. This study was conducted to evaluate handoff knowledge, critical thinking disposition, and clinical judgment by developing and applying a simulation-based handoff education program for nursing college students. Method This study is a one-group pretest-posttest design to develop and operate a simulation-based handoff training program to verify its effectiveness. The subjects were 4th year students enrolled in the Department of Nursing at the College of Nursing in Gyeonggi-do, The data were collected from February 19 to March 2, 2018. For data analysis, SPSS Version 22.0 was used, and general characteristics were analyzed by numbers, percentages, averages, and standard deviations. Before and after participating in the educational program, the subject's handoff knowledge, critical thinking disposition, and clinical judgment were analyzed using a paired t-test. Results Thirty people participated in this study as subjects. All participants were female and the average age was 22 years. The main results of the study are as follows. There was a significant difference in handoff knowledge from 4.63±1.61 before education to 5.83±0.95 after education (t=-3.71, p=0.001). There was a significant difference from 3.39±0.46 before education to 3.75±0.42 after education (t=-4.69, p<0.001). There was a significant difference in clinical judgment from 1.79±0.37 before education to 3.15±0.48 after education (t=-15.67 , p<0.001). Conclusion As a result of this study, it was confirmed that the simulation-based handoff education program was effective in improving the handoff knowledge, critical thinking disposition, and clinical judgment of nursing students. Therefore, based on the results of this study, it is expected that it will be used as basic data for establishing an education system to improve the performance of handoff in the future. In addition, it is considered that it can be used for education for new nurses and idle nurses, contributing to the improvement of the quality of handoff in the future.

Measurement of the Performance of a Cognitive Radio Spectrum Handoff Model

Wireless access has become an essential part of modern society. Consequently, new wireless applications and services, as well as the number of wireless users, are sharply increasing. Cognitive radio has improved the spectral efficiency of licensed radio frequency bands by accessing unused part of the band opportunistically without interfering with a licensed primary user. Spectrum mobility improves fast and smooth transition that lead to minimum performance degradation. An important requirement of mobility management protocols is a good performance in relation to spectrum handoff. To reduce the adverse effects of spectrum handoff interrupted secondary users may be provided with a higher priority over new secondary users for utilizing the available spectrum band. In this paper a queuing model of a spectrum handoff scheme for cognitive radio wireless networks is proposed. The handoff performance of the secondary users operating in a heterogeneous spectrum situation composed of licensed channels and unlicensed channels is tested., Three types of users: primary users, new secondary users, and handoff (Interrupted) secondary users are considered. The discrete event Simulator Matrix Laboratory (MATLAB) package tool is used to carry numerical calculations illustrating the effect of a priority queuing system on the performance of handoff of Secondary Users (SUs).

Using Simulation to Test Validity and Reliability of I-BIDS: A New Handoff Tool

Background Patient safety and improved outcomes are core priorities in healthcare, and effective handoffs are essential to these priorities. Validating handoff tools using simulation is a novel approach. Methods The construct validity and instrument reliability of the I-BIDS© tool were tested. In Phase I, construct validity was substantiated with a convenience sample of 21 healthcare providers through an electronic survey. Content Validity Ratio (CVR) was tabulated using Lawshe’s CVR. Interrater reliability was tested in a simulated handoff scenario, in Phase II, with graduate nursing students and two raters, and simulation effectiveness was assessed by students. Results Construct validity was evaluated, and 17 of the 25 items were found significant at the critical level (0.42). Items scoring below were removed, and the tool was reduced by one category. Weighted kappa (Kw) with quadratic weights was run from the scenario data to determine if there was an agreement between raters of handoff performance. There was a statistically significant agreement between the two raters, Kw = .627 (95% CI: .549–.705), p < .001) with good strength of the agreement. SET-M Total mean was 55.64 ( SD = 2.46). Discussion The tool showed beginning validity and interrater reliability. The SET-M Learning subscale showed the widest range of scores which suggests the most opportunity for improvement. Use of the tool in simulated scenarios may be one way to test the items further. Conclusions Simulation was effective in facilitating the evaluation of the tool.

NeuroTracker Multiple Object Tracking Ability Predicts Novice Performance on a Simulated Air Traffic Control Task

ABSTRACT Objective To explore the utility of multiple object tracking (MOT) ability, measured using NeuroTracker, as a predictor of air traffic control (ATC) task performance. Background The perceptual-cognitive abilities required for MOT are also important for ATC performance. The current study provides a novel examination of NeuroTracker’s utility to predict novice performance on a simulated ATC task, relative to two discrete measures of working memory (WM). Method Forty-six participants completed computer-based assessments of MOT ability (NeuroTracker) and WM (Corsi Block Tapping, Automated Operation Span) followed by the simulated ATC task. Regression analyses were performed to determine the associations between ATC task performance and the MOT and WM measures. Results After controlling for age and video game playing, MOT ability significantly predicted more correct detections of conflicts between aircraft, fewer false alarm responses to conflicts, and faster aircraft acceptance and hand-off. When WM measures were included in regressions, MOT was a stronger predictor of performance than WM on those outcomes, and remained a statistically significant predictor of better conflict detection, false alarm response, and hand-off performance. Conclusion The findings demonstrate the relevance of MOT ability to ATC task performance and support the potential utility of NeuroTracker for controller applicant screening and selection. Research is required to validate the findings in larger and more representative samples under more realistic conditions.

Improving handover competency in preclinical medical and health professions students: establishing the reliability and construct validity of an assessment instrument

BackgroundAs part of the worldwide call to enhance the safety of patient handovers of care, the Association of American Medical Colleges (AAMC) requires that all graduating students “give or receive a patient handover to transition care responsibly” as one of its Core Entrustable Professional Activities (EPAs) for Entering Residency. Students therefore require educational activities that build the necessary teamwork skills to perform structured handovers. To date, a reliable instrument designed to assess teamwork competencies, like structured communication, throughout their preclinical and clinical years does not exist.MethodOur team developed an assessment instrument that evaluates both the use of structured communication and two additional teamwork competencies necessary to perform safe patient handovers. This instrument was utilized to assess 192 handovers that were recorded from a sample of 229 preclinical medical students and 25 health professions students who participated in a virtual course on safe patient handovers. Five raters were trained on utilization of the assessment instrument, and consensus was established. Each handover was reviewed independently by two separate raters.ResultsThe raters achieved 72.22 % agreement across items in the reviewed handovers. Krippendorff’s alpha coefficient to assess inter-rater reliability was 0.6245, indicating substantial agreement among the raters. A confirmatory factor analysis (CFA) demonstrated the orthogonal characteristics of items in this instrument with rotated item loadings onto three distinct factors providing preliminary evidence of construct validity.ConclusionsWe present an assessment instrument with substantial reliability and preliminary evidence of construct validity designed to evaluate both use of structured handover format as well as two team competencies necessary for safe patient handovers. Our assessment instrument can be used by educators to evaluate learners’ handoff performance as early as their preclinical years and is broadly applicable in the clinical context in which it is utilized. In the journey to optimize safe patient care through improved teamwork during handovers, our instrument achieves a critical step in the process of developing a validated assessment instrument to evaluate learners as they seek to accomplish this goal.

Handoff Performance Evaluation based on RSS Measurement and Threshold Distance

Handoff Performance Evaluation based on RSS Measurement and Threshold Distance

Effects of Handoff Education using Concept Mapping and PASS-BAR

Purpose: The purpose of this study was to identify effects of Handoff Education using Concept mapping and PASS-BAR (HECPAR) on clinical reasoning competence, self-efficacy for handoff, and handoff performance of new nurses.Methods: Participants were randomly allocated into an experimental group (n=20) and control group (n=21). The experimental group received HECPAR which consisted of a one hour lecture, case based clinical practicum, and mentoring for a week. The control group received the usual informal handoffs education from senior nurses. Clinical reasoning competence, self-efficacy for handoff, and handoff performance were measured before and a week after HECPAR. Data were analyzed using Mann-Whitney U test, independent t-test, Fisher’s exact test, and chi-sqaure test. Results: The experimental group showed significant improvement in clinical reasoning competence (z=-2.29, p=.022), handoff performance (z=-2.23, p=.026), and self-efficacy of handoff (t=3.47, p=.001) compared to the control group.Conclusion: The results indicate that HECPAR is effective in improving clinical reasoning competence, self-efficacy for handoff, and handoff performance by new nurses. In addition, integrating concept mapping, PASS-BAR, and mentoring proved beneficial for handoff education for new nurses.

Optimization techniques for spectrum handoff in cognitive radio networks using cluster based cooperative spectrum sensing

Spectrum handoff has an undesirable effect in utilizing the space for Secondary user (SU) in the spectrum, which causes a handoff delay in cognitive radio network. The SU frequently faces the problem of handoff process which is likely to interrupt the service and substantial delay over the quality of service during the transmission. It struggles towards identifying the channel during the handoff by occupying a major role in today’s era. Based on this research, an effectual spectrum handoff scheme is anticipated using Spectrum Binary Particle Swarm Optimization (SpecBPSO) algorithm and M/G/1 queuing model. Towards improving the efficiency of SU and reducing the congestion over channel, Cluster Based Cooperative Spectrum Sensing (CBCSS) is used. The cluster head is selected dynamically based on the sensing signal of the SU. The cluster head is associated with the SU base station to report the active and inactive channel in the spectrum and later decision report is generated by the fusion center. In this proposed method, SpecBPSO uses the Boolean variable to reduce the total service time for handoff to find the optimal global value using bitwise and mutation operator format. This study work also presents an outline to observe the outcome of primary user’s activity and the delay performance of spectrum handoff with the possible interruptions in a CR network. The simulation setup of the proposed work is compared with spectrum particle swarm optimization (SpecPSO), binary particle swarm optimization (BPSO) and ant colony optimization that provide a better tradeoff over the delay achievement, maximize the SNR with the three benchmark functions and optimal handoff.

Use of a warm handoff interprofessional simulation to model asynchronous and patient-centered teamwork

An interprofessional education simulation in an outpatient clinic setting was utilized to allow pharmacy and social work students to practice the warm handoff communication technique. This event included 157 pharmacy and social work students. The primary objective of this encounter was for the learner to better understand the role of the partnering profession and demonstrate an appropriate warm handoff. The simulation included pre-event didactic education, performance of a warm handoff, and faculty-led debriefing. A novel warm handoff evaluation checklist was created to evaluate the performance of the students using the warm handoff communication technique. Students successfully initiated the warm handoff and demonstrated patient engagement by asking permission and using introductions. However, students did not perform as well with the more complex skills of communicating the patient's background, situation, and assessment to their colleagues. Students were asked to complete an anonymous, pre- and post-questionnaire to assess the impact and value of the interprofessional simulation and the likelihood that they would refer a patient to the partnering profession in the future. The post-questionnaire was evaluated both quantitatively and qualitatively using a content analysis of the open-ended questions. The quantitative analysis showed that students valued the simulation and the opportunity to practice and would use the skills gained in the future. The results also revealed an increased likelihood that students would refer patients to the partnering profession post-simulation. The content analysis of the open-ended question asking the learners what they thought was valuable about the simulation demonstrated that students value communicating with another healthcare team member with the patient in the room, learning about the role of other healthcare professionals, and practicing the warm handoff communication tool. Overall, this simulation was shown to be an effective activity to promote interprofessional care between pharmacy and social work students and to practice a warm handoff that promotes integrated patient care in outpatient healthcare settings.

MROM Scheme to Improve Handoff Performance in Mobile Networks

Mobile Router (MR) mobility supported by Network Mobility Basic Support Protocol (NEMO BS) is a Mobile IPv6 (MIPv6) extension that supports Host Mobility. Proposed Multihoming and Route Optimization for MANEMO (MROM) scheme is designed to provide Route Optimization (RO) and Multihomed in NEMO architectures. This paper proposes two novel schemes; MANEMO routing scheme and Multihoming-based scheme. These are to provide support for next generation networks. The proposed MROM scheme differs from other schemes for NEMO environment because it considers the requirements of more application flows parameters as packet lost delivery, handoff delay as well as throughput). Another difference is that not only the network infrastructure can begin the functionality of flow routing, but also an Edge Mobile Router (EMR) can do this flow for routing. Moreover, it utilizes the state of the art and presently active access network to perform the separation of each flow in mobile network. Thus, proposed MROM exhibits multihoming features and improves handoff performance by initiating flow-based fast registration process in NEMO environment. A handoff method is proposed with enhanced functionalities of the Local Mobility Anchors (LMA), Mobile Routers (MRs) and signaling messages with a view to achieve continuous connectivity through handoff in NEMO. Both analytical and simulation approaches are used. Analytical evaluation is carried out to analyze packet delivery lost and handoff delay of our proposed scheme. It was also shown that cost of signaling messages and packet delivery are contributing to total handoff cost. At the simulation part, network simulator 3 (NS 3) has been used as the tool to get performance metrics that have been considered like packet delivery ratio, handoff delay, and packet loss. Our proposed scheme (MROM) has been benchmarking to the standard NEMO BS Protocol and P-NEMO. In this paper, we discuss proposed MROM for next generation networks, providing detailed analysis with a numerical model, proposed MROM, by maximizing the handoff performance, has been justified to have better mobility support than the ordinary NEMO BS Protocol and PNEMO.

Inter-shift handoff: Changes over a 6-year interval.

To capture inter-shift handoff changes over a 6-year interval and to verify whether the handoff supporting system and aids (e.g., guidelines, training, and protocols) and environment really affect handoff performance. A non-experimental cross-sectional research design. Data from the 2017 and 2011 surveys were used for comparisons. A questionnaire survey was conducted among nursing staff in 31 general hospitals in 2017 and 4,282 staff responses were collected from inpatient wards such as internal medicine and surgery, the intensive care unit, emergency department and operating room. These were compared with the 1,182 responses collected in the previous 2011 survey. Changes in the 6-year interval included the introduction of handoff guidelines and increased provision of training. The handoff approach changed significantly and relied more on electronic systems, especially in inpatient wards. However, there was no significant improvement in interruptions. Information transfer improvement was limited and only observed in the surgery wards. Significant correlations verified that in hospitals where nursing staff more positively evaluated the effectiveness of the guidelines, faced fewer interruptions and had more time, handoff performance was better overall, and a higher frequency of sufficient information transfer was evident. Although the inter-shift handoff supporting system had great changes, improvement of information transfer occurred only in the surgery wards and was limited. It was verified that more effective handoff guidelines and a better handoff environment contributed significantly to improving inter-shift handoff performance. This study addressed the question as to whether inter-shift handoffs have really improved. The answer is yes, but in a limited way. Based on the survey results and handoff practices in Japanese hospitals, a mixed approach (verbal, written, technological) is suggested for inter-shift handoffs. In addition, it is important to improve the current handoff procedures, guidelines and training.

Handoff in WLAN/cellular systems based on a hybrid of WLAN bandwidth and ad hoc relaying strategies

The seamless vertical handoff from a wireless local area network (WLAN) to a cellular system yet poses a big challenge. While serving by a WLAN, a mobile node (MN) may enter a region with a low data rate before completing a handoff towards a cellular network. To maintain quality of service, a large amount of WLAN bandwidth must be allocated to compensate for the weakness of MN link. However, this mechanism does not work properly in dense hotspots because of the lack of WLAN bandwidth. An alternative is to employ relay nodes (RN) to remain connected to the AP. This scheme also does not operate well in a low-density hotspot because the chance of finding a suitable RN is low. In this paper, a hybrid solution that uses both WLAN bandwidth and potential RNs is proposed. It uses the trade-off between the WLAN bandwidth and the potential RNs to reach an optimum handoff performance in terms of call dropping probability. Initially, the probability of call dropping in relay mode is theoretically evaluated and compared with the simulation results. Next, the proposed Hybrid approach is modelled by assuming 5% and 10% of nods as the relay nodes. The results show the proposed method can significantly reduce call dropping probability in both low and high-density hotspots when compared with a relay or bandwidth-based approach. It also reduces new call blocking probability of the bandwidth only but slightly worse than the relay only methods.

Improving Patient Handoffs and Transitions through Adaptation and Implementation of I-PASS Across Multiple Handoff Settings.

Introduction:Communication failures are common root causes of serious medical errors. Standardized, structured handoffs improve communication and patient safety. I-PASS is a handoff program that decreases medical errors and preventable patient harm. The I-PASS mnemonic is defined as illness severity, patient information, action list, situational awareness and contingency plans, and synthesis by receiver. I-PASS was validated for physician handoffs, yet has the potential for broader application. The objectives of this quality improvement initiative were to adapt and implement I-PASS to handoff contexts throughout a pediatric hospital, including those with little or no known evidence of using I-PASS.Methods:We adapted and implemented I-PASS for inpatient nursing bedside report, physician handoff, and imaging/procedures handoff. Throughout the initiative, end-user stakeholders participated as team members and informed the adaptation of the I-PASS mnemonic, handoff processes, written handoff documents, and performance evaluation methods. Peers observed handoffs, scored performance, and provided formative feedback. Adherence to I-PASS was the primary outcome. We also evaluated changes in handoff-related error frequency and clinician attitudes about the effects of I-PASS on personal and overall handoff performance.Results:All 5 elements of the I-PASS mnemonic were used in 87% of inpatient nursing, 76% of physician, and 89% of imaging/procedures handoffs. Inpatient nurses reported reductions in handoff-related errors following I-PASS implementation. Clinicians across most handoff settings reported that using I-PASS improved both general and personal handoff performance.Conclusions:I-PASS is adaptable to many handoff settings, which expands its potential to improve patient safety. Clinicians reported reductions in errors and improvements in handoff performance. We identified broad institutional support, customized written handoff documents, and peer observations with feedback as crucial factors in sustaining I-PASS usage.

MUACLP Modeling Unified Architecture of Cross Layer Parameters Strategy of Handoff for Next Generation Wireless Network

The Quality of Service and Quality of experience is always a goal of future generation wireless systems. A suitably designed handoff plays an important role in achieving these goals. The traditional methods of handoff for wireless systems pose challenges in handling the smooth transition in the heterogeneous architecture of future generation architecture. This paper induces a model for synchronization of seamless handoff for a mobile user from a unified access point of a large cell to the small cell. The study is carried out considering a novel analytical model for facilitating a better form of vertical handoff mechanism in order to facilitate communication over 5G networks. The modeling is carried out considering the efficiency of channel capacity as well as considering near real-time constraint of latency and throughput. The typical design assumption for the unified architecture of the model for the handoff is for future generation wireless network that includes various physical layer parameters. For an effective analysis, the study considers that the receiving node will be identified on the basis of the non-erroneous node as the idea is to increase the proper utilization of the network resources. The core agenda of the study will be to ensure that irrespective of any form of traffic intensity as well as variable resource availability, the proposed scheme should be able to offer an extensive communication with the seamless performance during handoff operation. The study outcome exhibits that the proposed system offers better vertical handoff performance in contrast to the existing system on various test cases.

SFSH: a novel smart factory SDN-layer handoff scheme in 5G-enabled mobile networks

A smart factory network integrates various wireless networks to provide administrators with advanced factory network management capabilities and optimized services. Supporting smooth handoff management is an important issue in network architecture. Existing handoff management protocols are not sufficient to ensure handoff support in smart factories. This work was conducted to achieve the agility required by the smart factory network. The Smart Factory SDN-layer Handoff (SFSH) technique is proposed to guarantee Quality of Service (QoS) by supporting efficient handoff of devices in a smart factory. We proposes the SDN framework called SFSH for smart factory and a handover algorithm considering and the Received Signal Strength (RSS) and speed for SFSH. Through simple simulation, the SDN framework can flexibly cope with the conditions required by the smart factory, and it can be seen that the performance of SFSH considering RSS is improved over the existing handover process. SFSH uses the location and handoff signaling-delay information of devices in the factory to support mobility management and improve handoff performance in a wireless network environment. The sensitivity of the link layer and network layer is analyzed for handoff performance. Theoretical analysis shows that SFSH works better performance than other solutions.

Development of an aviation-style computerized checklist displayed on a tablet computer for improving handoff communication in the post-anesthesia care unit.

Critical patient care information is often omitted or misunderstood during handoffs, which can lead to inefficiencies, delays, and sometimes patient harm. We implemented an aviation-style post-anesthesia care unit (PACU) handoff checklist displayed on a tablet computer to improve PACU handoff communication. We developed an aviation-style computerized checklist system for use in procedural rooms and adapted it for tablet computers to facilitate the performance of PACU handoffs. We then compared the proportion of PACU handoff items communicated before and after the implementation of the PACU handoff checklist on a tablet computer. A trained observer recorded the proportion of PACU handoff information items communicated, any resistance during the performance of the checklist, the type of provider participating in the handoff, and the time required to perform the handoff. We also obtained these patient outcomes: PACU length of stay, respiratory events, post-operative nausea and vomiting, and pain. A total of 209 PACU handoffs were observed before and 210 after the implementation of the tablet-based PACU handoff checklist. The average proportion of PACU handoff items communicated increased from 49.3% (95% CI 47.7-51.0%) before checklist implementation to 72.0% (95% CI 69.2-74.9%) after checklist implementation (p < 0.001). A tablet-based aviation-style handoff checklist resulted in an increase in PACU handoff items communicated, but did not have an effect on patient outcomes.

Assessment of Spectrum Handoff Performance in Cognitive Radio Cellular Networks

Spectrum Handoff is an essential process to assure unified, effective, and robust service for cognitive users (CUs) in cognitive radio cellular networks (CRCNs). This letter models the key handoff performance measuring metrics: link maintenance probability, link failure probability, and service completion probability of a non-stationary CU and analyzes the impact of mobility parameters to investigate the characteristics and behavior of a CRCN. In addition, we present the impact of general service time distributions on service completion probability. Results show that the service time distributions have a significant impact on spectrum handoff performance metrics for cases of higher mobility.

Different Techniques for Successful Handoff and Prevention of New Call Blocking Probability

The unsuccessful handoff and call dropping have been a fast growing, challenging and interesting area in real time application. The immense advancement in cellular networks communication study, has made tremendous improvement in the sphere of wireless technologies which are complementary to other and their union for specific area and services has created single wireless network system. The different wireless network systems having separate function have been combined under the concept of Next-Generation Wireless Communications Systems (NGNS) with a view to provide seamless high-quality wireless network services to mobile users. A set of mechanism are proposed for successful handoff process during the transfer of active calls or date session from one cell in a cellular network to another or from one channel in a cell to another maintaining uninterrupted service to a data session user. In this paper factors responsible for unsuccessful handoff and new call dropping probability method with probable control measures are reviewed. Methods are also proposed to increase handoff performance of mobile IP by decreasing the probability of false handoff initiation to a great extent under handoff management protocol of NGWS considering MT speed and handoff signaling which are directly proportional to false handoff initiation. In is reported that electromagnetic radiation is reduced to a considerable limit with the use of multi antennas instead of a single big antenna.