Factors Affecting QoS in Tanzania Cellular Networks

Quality of service in cellular communication system is a topic that recently has raised much interest for many researchers. This paper presents the findings obtained from the study on factors affecting QoS in Tanzania cellular networks. The study was carried out in Dodoma Municipal, Tanzania. The study employed cross sectional research design. Information was gathered from structured questionnaire of 240 subscribers during the study of quality of service for the four leading cellular networks in Tanzania. Both qualitative and quantitative data from field survey were collected and analyzed using Statistical Package for Social Sciences and Excel software. The study findings show that the major factors that degrade QoS in Tanzania cellular networks are inadequate network infrastructure, lack of fairness from service providers and little efforts taken by the government in enforcing the national agreed standards. Other factors are lack of reliable end to end systems, geographical terrain, low quality handsets, poor government monitoring on standards and lack of subscriber skills and training.

💡 Research Summary

The paper investigates the determinants of Quality of Service (QoS) in Tanzania’s cellular networks, focusing on the capital region of Dodoma. Using a cross‑sectional design, the authors collected data from 240 mobile subscribers through a structured questionnaire that covered demographic information, the operator used, usage patterns, satisfaction levels, and specific incidents of service degradation. Both quantitative and qualitative data were processed with SPSS and Excel, allowing for descriptive statistics, correlation analysis, and factor analysis, while open‑ended responses were thematically coded to enrich the findings.

The analysis identified three primary factors that most significantly degrade QoS: (1) inadequate network infrastructure, (2) unfair practices by service providers, and (3) insufficient governmental enforcement of national standards. Infrastructure shortcomings manifested as low base‑station density, unreliable power supply, and limited back‑haul capacity, especially acute in Dodoma’s inland setting where electricity and fiber‑optic networks are sparse. These constraints produce coverage gaps, weak signal strength, and high latency, directly affecting voice call clarity and data throughput.

Unfair provider behavior was reported through inconsistent data caps, opaque throttling policies, and uneven handling of customer complaints. Respondents noted that identical tariff plans delivered markedly different data speeds and volumes across operators, eroding trust and perceived value. The lack of transparent grievance mechanisms further amplified dissatisfaction.

Governmental oversight was deemed weak; existing regulations do not align closely with international standards such as ITU‑R or 3GPP, and penalties for non‑compliance are rarely enforced. This regulatory vacuum permits operators to set divergent quality benchmarks, widening the QoS gap between networks.

Secondary contributors included: (a) the absence of reliable end‑to‑end management systems (NMS, OSS/BSS), which hampers real‑time fault detection and prolongs mean time to repair; (b) challenging terrain—Dodoma’s high‑land and mountainous topography causes significant propagation loss, creating micro‑areas of poor reception; (c) low‑quality handsets that lack advanced antenna designs and support for newer standards (LTE‑Advanced, 5G), limiting users’ ability to experience the network’s full capabilities; and (d) limited subscriber skills and training, which result in suboptimal device configuration, poor data‑usage management, and a general inability to troubleshoot connectivity issues.

The authors propose a multi‑pronged strategy to improve QoS: (1) accelerate infrastructure investment through public‑private partnerships, focusing on expanding base‑station sites, stabilizing power supply, and upgrading back‑haul links; (2) institute transparent, standardized tariff structures and enforce fair‑play policies, coupled with a robust, time‑bound complaint resolution framework; (3) revise the regulatory framework to align with global standards, introduce measurable QoS metrics, and apply enforceable sanctions for violations; (4) deploy integrated network management platforms that provide end‑to‑end visibility and rapid fault remediation; (5) adopt terrain‑aware network planning, employing higher‑gain antennas and adaptive modulation schemes to mitigate propagation loss; (6) promote the distribution of certified, higher‑quality handsets and discourage the market penetration of sub‑standard devices; and (7) launch nationwide consumer‑education campaigns to raise awareness of optimal device settings, data‑usage best practices, and basic troubleshooting.

By addressing infrastructure, policy, and user‑behavior dimensions simultaneously, the paper argues that Tanzania can achieve a measurable uplift in cellular QoS, fostering greater consumer confidence, higher data consumption, and ultimately supporting the country’s broader digital development goals.