Wireless data center networking with steered-beam mmWave links

Katayama, Y.; Takano, Kohji; Kohda, Yasuteru; Ohba, Norio; Nakano, Daiju

doi:10.1109/wcnc.2011.5779470

Cited by 51 publications

(27 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2) Beamforming: Katayama et al propose wireless packetswitching networking in DCs using steered-beam mmWave links [47]. Wireless transceivers are placed atop racks and LOS links between adjacent rows of racks are realized.…”

Section: A Hybrid Rf Dcnsmentioning

confidence: 99%

Wireless Communication in Data Centers: A Survey

Hamza

Deogun

Alexander

2016

IEEE Commun. Surv. Tutorials

103

View full text Add to dashboard Cite

Abstract-Data centers (DCs) is becoming increasingly an integral part of the computing infrastructures of most enterprises. Therefore, the concept of DC networks (DCNs) is receiving an increased attention in the network research community. Most DCNs deployed today can be classified as wired DCNs as copper and optical fiber cables are used for intra-and inter-rack connections in the network. Despite recent advances, wired DCNs face two inevitable problems; cabling complexity and hotspots.To address these problems, recent research works suggest the incorporation of wireless communication technology into DCNs. Wireless links can be used to either augment conventional wired DCNs, or to realize a pure wireless DCN. As the design spectrum of DCs broadens, so does the need for a clear classification to differentiate various design options. In this paper, we analyze the free space optical (FSO) communication and the 60 GHz radio frequency (RF), the two key candidate technologies for implementing wireless links in DCNs. We present a generic classification scheme that can be used to classify current and future DCNs based on the communication technology used in the network. The proposed classification is then used to review and summarize major research in this area. We also discuss open questions and future research directions in the area of wireless DCs.Index Terms-Wireless data centers, 60 GHz, free space optical (FSO), optical wireless communication (OWC), data centers, data center network.

show abstract

Section: A Hybrid Rf Dcnsmentioning

confidence: 99%

Wireless Communication in Data Centers: A Survey

Hamza

Deogun

Alexander

2016

IEEE Commun. Surv. Tutorials

103

View full text Add to dashboard Cite

show abstract

“…By taking advantage of clean LOS channels on top of server racks, Katayama et al have implemented a robust wireless packet-switching network for wired DCN using mmWave LOS channels [9,10]. They have presented the architecture considerations for the wireless crossbar switching.…”

Section: Wireless Solutionsmentioning

confidence: 99%

“…Input: Topology graph G(V, E), , , route length limit Output: a set of routes for ( , ) (1) Tabu list T = 0, Route set S = 0, Node set N = { }; (2) for each node in set N do (3) if the length of the path from to is larger than then (4) Break; (5) end (6) for each neighbor a of node do (7) if a is equal to then (8) Add the path from to in the tree to S; (9) Add the nodes in the path to T except ; (10) else (11) if a is already included in T then (12) Cut and the subtree rooted at from the tree; (13) end (14) end (15) Add to N if ∉ N; (16) end (17) Remove from N; (18) end (19) Return S Algorithm 2: Route calculation.…”

Section: Wfn Schedulingmentioning

confidence: 99%

Layout-Independent Wireless Facility Constructing and Scheduling for Data Center Networks

Wei¹,

Sun²

2017

Wireless Communications and Mobile Computing

View full text Add to dashboard Cite

The control packets in the data center networks (DCNs) have to contest with the data packets although they are usually much shorter in size and much more important in network management. Moreover, the uneven distribution of the packets may create potential traffic hotspots in the DCN which could degrade network performance drastically. To bridge these gaps, a layout-independent constructing algorithm and a scheduling method are put forward towards layout-independent wireless facility in data centers. First of all, a conflict aware spanning tree algorithm is developed to construct the wireless facility network (WFN). Secondly, a scheduling method which contains three steps, route calculation, traffic estimation, and flow scheduling, is presented. In the route calculation step, a route set between each node pair is calculated in advance for later usage. The scheduler estimates the traffic loads on the links on a regular basis in the traffic estimation step. Then, arrived data and control flows are scheduled according to multiple policies based on given route sets and scheduling objectives in the flow scheduling step. Finally, a series of experiments have been conducted on NS3 based on two typical data center layouts. Experimental results in both scenarios have validated our proposal' effectiveness.

show abstract

“…Wireless links can address the cabling complexity in data centers [15,17,18,23,26]. As shown in Figure 1(a)-(b), wireless radios can be placed on the top of each rack or shipping container, connecting the topof-rack (ToR) switches wirelessly.…”

Section: Wireless Data Centersmentioning

confidence: 99%

“…Existing designs [15,17,18,26] adopt 60 GHz wireless technologies because of two reasons. First, the 7GHz available spectrum offers ample opportunity to achieve multi-Gbps data rates required by data centers.…”

Section: Ghz Wirelessmentioning

confidence: 99%

3D beamforming for wireless data centers

Zhang

Zhou

Yang

et al. 2011

Proceedings of the 10th ACM Workshop on Hot Topics in Networks

View full text Add to dashboard Cite

Contrary to prior assumptions, recent measurements show that data center traffic is not constrained by network bisection bandwidth, but is instead prone to congestion loss caused by short traffic bursts. Compared to the cost and complexity of modifying data center architectures, a much more attractive option is to augment wired links with flexible wireless links in the 60 GHz band. Current proposals, however, are severely constrained by two factors. First, 60 GHz wireless links are limited by line-of-sight, and can be blocked by even small obstacles between the endpoints. Second, even beamforming links leak power, and potential interference will severely limit concurrent transmissions in dense data centers. In this paper, we explore the feasibility of a new wireless primitive for data centers, 3D beamforming. We explore the design space, and show how bouncing 60 GHz wireless links off reflective ceilings can address both link blockage and link interference, thus improving link range and number of current transmissions in the data center.

show abstract

Wireless data center networking with steered-beam mmWave links

Cited by 51 publications

References 12 publications

Wireless Communication in Data Centers: A Survey

Wireless Communication in Data Centers: A Survey

Layout-Independent Wireless Facility Constructing and Scheduling for Data Center Networks

3D beamforming for wireless data centers

Contact Info

Product

Resources

About