Hybrid Wireless Ad Hoc Networks

h 1 Hybrid Wireless Ad Hoc network is formed by wireless Ad Hoc etworks and base stations. Due to the lack of infrastructure, wireess ad hoc network data is forwarded to the destination via a ulti-hop fashion. In other scenarios, a set of base stations are onnected by wired links and placed within the ad-hoc networks o form a wired infrastructure, aiming to enhance the whole netork performance. This resulting network is referred to hybrid ireless ad hoc networks. This special issue contains 31 papers elected from submissions to the open call for papers on hybrid ireless ad hoc networks. These papers highlight some of the curent research interests and achievements in this area. The explosion of mobile traffic and highly dynamic property ofen make it increasingly stressful for a cellular service provider to rovide sufficient cellular spectrum resources to support the dyamic change of traffic demand in a day. The paper, “Reverse specrum auction algorithm for cellular network offloading,” by F. Zhao t al considers the dynamic characteristics of the cellular network raffic demands, and proposes an optimal, truthful reverse auction ncentive framework, which can minimize the leasing costs susained by the mobile network operator at the premise of meeting he traffic demand of each time period. The paper, “Approaching the capacity of K-user MIMO intererence channel with interference counteraction scheme,” by Z. Li t al studies the general K-user MIMO interference channel with M ntennas at each transmitter and N antennas at the corresponding eceiver. Interference counteraction scheme is proposed to improve he entire achievable rate of such channel under the assumption hat the global channel state information (CSI) is available to the eceivers. Distribute antenna system (DAS) can provide high date rate ransmission to satisfy the service requirements for the rapid rowing wireless applications. Besides, the increasing deployment f wireless applications make the demand for spectrum resource row rapidly, thus cognitive radio (CR) has emerged as a promising echnology to improve spectrum utilization, and spectrum auction s a promising approach to allocate spectrum bands in CR. A few xisting works considered the combination of DAS and CR to get etter system performance, but they have never studied the specrum auction in these systems. The paper, “A spectrum auction alorithm for cognitive distributed antenna systems,” by F. Zhao et al tudies the spectrum auction problem for cognitive DAS to improve pectrum utilization. As the future Internet architecture, information centric netorking(ICN) can also offer superior architectural support for moile ad hoc networking. Therefore, information-centric mobile ad