Cross-Layer Optimization for Opportunistic Multi-MAC Aggregation

Elkourdi, Tariq; Chincholi, Amith; Le, Tan; Demir, Alpaslan

doi:10.1109/vtcspring.2013.6692496

Cited by 7 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the proportion of traffic λ i assigned to each RAT i can be optimized according to certain objectives. For example, the DOCT scheme in [13] proposes to minimize the maximum delay across multiple RATs, while the OMMA scheme in [12] attempts to minimize the average delay of all RATs. Then the packets are dispatched to each RAT with a probability proportional to its assigned ratio λ i .…”

Section: B Packet Dispatching Policiesmentioning

confidence: 99%

“…where λ i , E[B i ], ρ i = λ i G/μ i denote the arrival rate, the average holding cost, and the offered load of RAT i, respectively, all according to a state-independent batch-specific policy such as DOCT [13], OMMA [12]. The second term corresponds to the expected increase in cumulative costs that the later arriving batches experience with the given basic policy.…”

Section: B Packet Dispatching Policiesmentioning

confidence: 99%

“…As a fair comparison, we also implement the DOCT scheme proposed in [12] as a state independent-policy, and the JSQ scheme as a state-dependent policy. Note that the DOCT scheme is adopted as the basic policy to obtain the average arrived rate for each RAT , which is used in the admittance cost for the OPD scheme.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…Some new functions and protocols are proposed for interworking scenarios in the recent 3GPP releases (e.g., Rel. [10][11][12] [5] [6]. The HotSpot 2.0 specification [7] is developed by Wi-Fi Alliance to support automatic network discovery, use authentication and admission control for the integrated WLANs and other wireless networks.…”

Section: Introductionmentioning

confidence: 99%

“…For example, a Generic Link Layer (GLL) between IP and MAC layers is proposed to map user service demands to different RATs in the link layer [10], [11]. In [12], the authors propose the Opportunistic Multi-MAC Aggregation (OMMA) scheme to aggregate the transmission over multiple RATs. In [13], a convex optimization problem is formulated that attempts to reduce the out-of-order delay with optimal traffic splitting over multiple RATs.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Online Packet Dispatching for Concurrent Transmissions in Heterogeneous Multi-RAT Networks

Hua

2015

2015 IEEE Global Communications Conference (GLOBECOM)

View full text Add to dashboard Cite

The heterogeneity of different radio access technologies (RATs) in the tightly integrated multi-RAT networks can be exploited to support bandwidth hungry applications. However, the out-of-order problem due to concurrent transmissions over multiple RATs may compromise the performance gain if packets are not well dispatched between different RATs. In this paper, we address this problem by adopting value function as a measure of the admittance cost based on current RAT and queuing states, with which the online packet dispatching problem is formulated as a nonlinear mix-integer programming problem. We obtain the close-form solution for this problem for the special case of two RATs and design a gradient algorithm based on the dual decomposition technique for general cases. Simulation results show that the proposed scheme significantly reduces the delay variation over different RATs, which is effective in alleviating the out-of-order problem in concurrent transmissions.

show abstract

Section: B Packet Dispatching Policiesmentioning

confidence: 99%

Section: B Packet Dispatching Policiesmentioning

confidence: 99%

Section: Performance Evaluationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Online Packet Dispatching for Concurrent Transmissions in Heterogeneous Multi-RAT Networks

Hua

2015

2015 IEEE Global Communications Conference (GLOBECOM)

View full text Add to dashboard Cite

show abstract

On the packet allocation of multi-band aggregation wireless networks

Goyal

Chincholi

et al. 2017

Wireless Netw

Self Cite

View full text Add to dashboard Cite

Abstract-The use of heterogeneous networks with multiple radio access technologies (RATs) is a system concept that both academia and industry are studying. In such system, integrated use of available multiple RATs is essential to achieve beyond additive throughput and connectivity gains using multi-dimensional diversity. This paper considers an aggregation module called opportunistic multi-MAC aggregation (OMMA). It resides between the IP layer and the air interface protocol stacks, common to all RATs in the device. We present a theoretical framework for such system while considering a special case of multi-RAT systems, i.e., a multi-band wireless LAN (WLAN) system. An optimal packet distribution approach is derived which minimizes the average packet latency (the sum of queueing delay and serving delay) over multiple bands. It supports multiple user terminals with different QoS classes simultaneously. We further propose a packet scheduling algorithm, OMMA Leaky Bucket, which minimizes the packet end-to-end delay, i.e., the sum of average packet latency and average packet reordering delay. We also describe the system architecture of the proposed OMMA system, which is applicable for the general case of the multi-RAT devices. It includes functional description, discovery and association processes, and dynamic RAT update management. We finally present simulation results for a multi-band WLAN system. It shows the performance gains of the proposed OMMA Leaky Bucket scheme in comparison to other existing packet scheduling mechanisms.

show abstract