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A mobile ad hoc network (MANET) has several intrinsic features that create unique queuing dynamics, and thus congestion control inside a MANET must be achieved under time-critical conditions. Meanwhile, the Named Data Networking (NDN) architecture ensures traffic optimization and has attracted renewed attention as part of the future internet. The synergy between NDN and MANETs can be exploited in order to improve the performance of dynamic content routing and congestion control mechanisms. This overview identifies the key concepts involved in congestion control for NDN-based MANETs. It also proposes some criteria for categorising existing congestion control solutions for NDN-based MANETs and discusses the advantages and disadvantages of each category. Future challenges regarding congestion control for NDN-based MANETs are also highlighted.

Mobile ad-hoc networks (MANETs) are composed of mobile nodes communicating through wireless medium, without any fixed centralized infrastructure. Providing quality of service (QoS) support to multimedia streaming applications over MANETs is vital. This paper focuses on QoS support, provided by the stream control transmission protocol (SCTP) and the TCP-friendly rate control (TFRC) protocol to multimedia streaming applications over MANETs. In this study, three QoS parameters were considered jointly: (1) packet delivery ratio (PDR), (2) end-to-end delay, (3) and throughput. Specifically, the authors analyzed and compared the simulated performance of the SCTP and TFRC transport protocols for delivering multimedia streaming over MANETs. Two simulation scenarios were conducted to study the impact of traffic load and node speed (mobility) to their performance. Based on the simulation results, the authors found that the PDR and the end-to-end delay of TFRC are slightly better than those of SCTP in both scenarios. Additionally, the performance of SCTP is significantly better than TFRC in terms of throughput.

Mobile ad hoc networks (MANETs) use algorithms that schedule transmissions in a fair and efficient manner. A multihop scheduler schedules transmissions so that the channel utilization is maximized while guaranteeing the quality of service (QoS) for all nodes. QoS-based scheduling in MANETs must be obtained under time-critical conditions as these networks have several features that produce unique queuing dynamics. Schedulers in MANETs take into account various QoS parameters such as end-to-end packet delay, packet delivery ratio, flow priority, etc. Also, scheduling in MANETs takes many forms such as distributed priority, fair, opportunistic, etc. This article provides a survey of scheduling techniques for MANETs and discusses the advantages and disadvantages of each category.

In a MANET, there is no need to deploy any infrastructure to make nodes to communicate with each other. MANETs have unique characteristics that complicate congestion control. The standard TCP congestion control mechanism is not able to handle the special properties of a shared wireless multi-hop channel well. The frequent changes of the network topology and the shared nature of the wireless channel pose significant challenges. Therefore, various congestion control approaches for MANETs have been proposed. This paper discusses TCP enhancements for wireless links. It analyzes design challenges for an enhanced transport protocol, and presents congestion control schemes for MANETs.

In MANETs, various QoS problems exist such as high error rates, handling node mobility, inefficient routing, power conservation, and limited processing capabilities of network devices. To obtain secure ad hoc routing, misbehaving or malicious nodes should be detected and isolated. Otherwise, the overall network performance will be decreased. The participating nodes should establish a network with an acceptable level of trust relationships among themselves. This problem is solved with the adoption of a trust management framework and by extending the conventional routing protocol. This paper proposes a new routing protocol (TRUST_AODV) that extends the AODV routing protocol by incorporating a trust algorithm that detects misbehaving nodes. For each node, the proposed algorithm computes the weighted trust by taking into account the packet delivery ratio, energy consumption rate and buffer length. TRUST_AODV secures the MANET against potential packet drop attacks and denial-of-service attacks. It also improves the network performance under heavy network load conditions. The simulation results demonstrate that it supports secure routing and optimised performance.

The proposed techniques facilitate semantic discovery and interoperability of web services that manage and deliver web media content. As a test-bed, a web management system is discussed that provides vocational monographs for occupational guidance. The key idea of the proposed web service based architecture is that the WS of participating members share their vocational monographs and related resources, resulting in the overall system capacity increase. Mechanisms and techniques are presented concerning: an 'information desk', which provides an adaptive search user interface; discovery functions based on semantic representation of the WS' monographs; mining into monographs based on their semantic representation; a metric-based evaluation model for the web monographs; dynamic ranking of retrieved content list; consumption mechanisms for the career counsellors' local WS; e-payment; universal usability access. This analysis can be exploited in the practice of a new Occupational Guidance Policy.