scholarly journals Congestion control of mobile node in wireless mobile and communication using 802.15.4/ZigBee

2017 ◽  
Vol 14 (6) ◽  
pp. 60-69
2011 ◽  
Vol 267 ◽  
pp. 1038-1043
Author(s):  
Byung Joo Park ◽  
Farkhod A. Alisherov ◽  
Byeong Yun Chang

Using a hierarchy that differentiates local mobility from global mobility is more appropriate to the Internet because it improves handoff performance, minimizes the loss of packets that may occur during transition and significantly reduces the mobility management signaling load on the Internet. But the only disadvantage of the Hierarchical Mobile IPv6 is that Mobility Anchor Point are sometimes "far away" and there is too much signaling from the mobile node. This paper assumes a new messaging architecture for the Hierarchical Mobile IPv6, which can shorten the signaling from the mobile node and minimize the handoff latency.


The advancement in wireless mobile networks (WMNs) and their technologies are becoming the most popular technologies today and are widely used in various communication services. Devices for communication are equipped with wireless network interfaces through which they can efficiently stream data to their network-wide devices. However, due to the extreme use of different services, and TCP incapacity to control congestion, it causes a high overload in wireless communication, which makes the network extremely unstable and congested. Conventional routing methods with congestion control mechanisms for multimedia streams are not reliable for transport layer protocols. In such a case, it makes wireless networks very complex and challenging to perform smooth routing due to its dynamic characteristics and resource constraints. It can be overcome through scheduling flow control in multiple network interfaces for smooth packets streaming data, and even it can play an important role in congestion control by overwhelming the buffers of intermediate nodes and reduction in packet loss. In this paper, we propose a Routing Delay Reduction Approach (RDRA) based on dynamic switching by estimating the transmission rate and delay probability through congestion prediction. The goal of RDRA is to reduce routing latency and packet loss and improve throughput at different traffic rates. Experimental evaluation measures at different traffic rate variation it shows an improved performance in terms of throughput and low latency compared to the related protocols.


2012 ◽  
Vol 488-489 ◽  
pp. 417-423
Author(s):  
Zan Qiang Dong ◽  
Su Bin Shen

The technology on network interconnection handoff with the QoS guarantee is becoming an important research issue in wireless mobile networks. Most of the current researches focus on the cell mobile networks, the schemes of which are comparatively complex in solving the QoS guarantee in mobile node handoff and the utilization rate of resource is lower. In order to reduce these disadvantages to the minimal extent, the model (HDBRA) on the mobile node handoff with service guarantee applied in the wireless mobile networks is presented in the paper based on the dynamic network bandwidth resource allocation in the real-time detection on the data flow state and network traffic-load in interconnection gateway nodes. And according to the state of the applications data in mobile node handoff, the model describes and analyzes in detail the dynamic resource allocation and reservation, and the release of the reserved resource as well. In the scheme, the real-time adjustment on resource allocation is achieved based on the real-time measurement on network traffic-load in interconnection gateway nodes and the method also achieves the balance on network traffic-load. Theoretic analysis and simulation test the correctness and validity of the model in the paper.


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