Connectivity of Heterogeneous Wireless Networks

  title={Connectivity of Heterogeneous Wireless Networks},
  author={Wei Ren and Qing Zhao and Ananthram Swami},
  journal={IEEE Transactions on Information Theory},
We address the percolation-based connectivity of large-scale ad hoc heterogeneous wireless networks, where secondary users exploit channels temporarily unused by primary users and the existence of a communication link between two secondary users depends on not only the distance between them but also the transmitting and receiving activities of nearby primary users. We introduce the concept of connectivity region defined as the set of density pairs-the density of secondary users and the density… 
Connectivity of cognitive radio networks: proximity vs. opportunity
The tradeoff between proximity (the number of neighbors) and the occurrence of spectrum opportunities is revealed by studying the impact of secondary users' transmission power on the connectivity region of thesecondary network, and the transmission power of the secondary users is designed to maximize their tolerance to the primary traffic load.
Connectivity of interference limited cognitive radio networks
The connectivity of cognitive radio networks is considered, which is defined as the existence of an infinite connected component of secondary users, and it is found that the connectivity region without taking interference into consideration is a subset of the authors' connectivity region, which means interference will not adversely affect the connectivity of secondary network.
Connectivity and Transmission Delay in Large-Scale Cognitive Radio Ad Hoc Networks With Unreliable Secondary Links
This paper investigates connectivity and transmission delay of secondary users in large-scale wireless cognitive radio (CR) ad hoc networks from a percolation-based perspective and shows that transmission delay scales linearly and sub-linearly with distance in the long-term connectivity and instantaneous connectivity regions, respectively.
Local connectivity for heterogeneous overlaid wireless networks
Percolation-Based Connectivity of Multiple Cooperative Cognitive Radio Ad Hoc Networks
The connectivity of a cooperative secondary network, under which each secondary network's user may have other secondary networks' users acting as relays, is characterized in terms of percolation threshold, from which the benefits of cooperation are justified.
Connectivity of Clustered and Multi-type User CR Network: A Percolation Based Approach
This work addresses the percolation-based connectivity problem, in which the existence of a communication link between two secondary users depends on not only the distance between them, the transmitting and receiving activities of nearby primary users, but also the neighboring user’s type.
Node density and connectivity of multi-channel ad hoc cognitive radio networks
  • Dong Liu, Erwu Liu, C. Liu
  • Computer Science
    2015 IEEE/CIC International Conference on Communications in China (ICCC)
  • 2015
It is found that more accurate sensing carried by SUs does not necessarily bring better connectivity of the secondary network, and it is shown that more licensed channels can loosen the condition for SUs percolation.
Percolation in multi-channel secondary cognitive radio networks under the SINR model
This paper defines and characterize the connectivity of the secondary network in terms of the available number of channels, deployment density, number of transceivers per node and interference cancellation coefficient, both in the presence and absence of primaries, and shows how cooperation between primary and secondary networks can increase the connectivityof both.
Degree Distribution in Interference-Limited Heterogeneous Wireless Networks and Its Generalizations
Insight is given into fundamental limits of coexistence in interference-limited heterogeneous environment, advantages of different broadcasting schemes and cooperation among heterogeneous networks, using the analytical methods of complex network.
Local connectivity of cognitive radio Ad hoc networks
Stochastic geometry and probability theory is used to derive the distribution of node degree, probability of available spectrum and probability of node isolation of the Secondary Users (SUs), andoretical analysis and simulation results indicate that the average node degree of SUs scales linearly for increases in the density of S Us with the slope determined by thedensity of Primary Users (PUs).


Connectivity and Latency in Large-Scale Wireless Networks with Unreliable Links
  • Z. Kong, E. Yeh
  • Computer Science
    IEEE INFOCOM 2008 - The 27th Conference on Computer Communications
  • 2008
It is shown that due to the dynamic behavior of links, a delay is incurred for any transmission even when propagation delay is ignored, and the delay scales linearly with the Euclidean distance between the sender and the receiver when the network is in the subcritical phase.
On the minimum node degree and connectivity of a wireless multihop network
This paper derives an analytical expression that enables the determination of the required range r0 that creates, for a given node density ρ, an almost surely k--connected network and investigates two fundamental characteristics of a wireless multi -hop network: its minimum node degree and its k--connectivity.
Impact of interferences on connectivity in ad hoc networks
It is proved that if /spl gamma/ is nonzero but small enough, there exist node spatial densities for which the network contains a large (theoretically infinite) cluster of nodes, enabling distant nodes to communicate in multiple hops.
Closing the Gap in the Capacity of Wireless Networks Via Percolation Theory
An achievable bit rate per source-destination pair in a wireless network of n randomly located nodes is determined adopting the scaling limit approach of statistical physics. It is shown that
Connectivity, Percolation, and Information Dissemination in Large-Scale Wireless Networks with Dynamic Links
In the pres ence of a non-negligible propagation delay, the delay for information dissemination scales linearly with the Euclidean distance in both the subcritical and supercritical regimes, with the rates for the linear scaling being differe nt in the two regimes.
On the Connectivity and Multihop Delay of Ad Hoc Cognitive Radio Networks
Using theories and techniques from continuum percolation and ergodicity, the scaling law of the minimum multihop delay with respect to the source-destination distance is established.
Percolation in the signal to interference ratio graph
This paper considers a variation of Poisson percolation models in which a connection between two points depends not only on their Euclidean distance, but also on the positions of all other points of the point process.
Critical Power for Asymptotic Connectivity in Wireless Networks
In wireless data networks each transmitter's power needs to be high enough to reach the intended receivers, while generating minimum interference on other receivers sharing the same channel. In
Connectivity properties of a packet radio network model
A model of a packet radio network in which transmitters with range R are distributed according to a two-dimensional Poisson point process with density D is examined and it is shown that pi R/sup 2/D, the expected number of nearest neighbors of a transmitter, must grow logarithmically with the area of the network.
Power control in cognitive radio networks: how to cross a multi-lane highway
The difference between detecting primary signals and detecting spectrum opportunities is revealed, and the complex relationship between physical layer spectrum sensing and MAC layer throughput is demonstrated, and it is revealed that reliable opportunity detection is achieved in the two extreme regimes.