Throughput of the 1x EV-DO system with various scheduling algorithms

Choi, Eun Ho; Choi, Wan; Andrews, Jeffrey G.

doi:10.1109/isssta.2004.1371722

Cited by 10 publications

(5 citation statements)

References 8 publications

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“…This is an issue that has to be addressed by any QoS aware scheduler. 8 A ÓÐ user can clog the entire network if he stays within range of a BTS with Ec/Nt that does not match his throughput requirements. An extension to the policy is needed that would move such users to a lower QoS class that matches their current Ec/Nt.…”

Section: Discussionmentioning

confidence: 99%

Policy-Based QoS-Aware Packet Scheduling for CDMA 1x Ev-DO

Hwang

Refaei

Choi

et al. 2007

2007 IEEE International Conference on Communications

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Abstract-CDMA 1x Ev-DO is an evolution of the CDMA2000 3G wireless standard to enable high rate packet data services up to 2.4Mbps in Rev 0, 3.1Mbps in Rev A, and 4.9Mbps in Rev B. To support such high data rates, CDMA 1x Ev-DO utilizes TDMA technology on the downlink allowing a single receiver per time slot. Accordingly, a scheduling algorithm is necessary to determine which user receives data in a given time slot. Typically, schedulers consider efficiency (increasing network throughput) or fairness (fair allocation of resources among users) as the basis for scheduling. To realize a reasonable tradeoff between efficiency and fairness, opportunistic schedulers have been proposed that take advantage of instantaneous improvements in users radio conditions by serving them at higher rates. However, given the increasing demand to support user QoS requirements, a QoS-aware scheduler may need to serve users even at times of inadequate radio conditions. In this paper, we propose a QoS-aware packet scheduling algorithm that takes into account policy rules that govern the relationships between different user QoS classes. Our scheduler uses marginal utility functions defined to embody the given rules when selecting users to be served on the downlink. Our scheduling algorithm is implemented in the OPNET module of the CDMA 1x Ev-DO system that we have developed, and its performance is compared to other scheduling algorithms. The simulation results show that our scheduler performs well ensuring the policy rules are followed, meeting users' QoS requirements, and providing fairness among users within the same QoS class.

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Section: Discussionmentioning

confidence: 99%

Policy-Based QoS-Aware Packet Scheduling for CDMA 1x Ev-DO

Hwang

Refaei

Choi

et al. 2007

2007 IEEE International Conference on Communications

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“…For EVDO, one second measurement to establish a relationship between DRC request and SINR by mobile terminal for throughput lead to no conclusion to authors [2]. However, in 2000 1x EVDO, when being served, the mobile calculates its Signal-to-Interference-plus-Noise Ratio (SINR) and determines the highest data rate supportable among 11data rates with the calculated SINR at every slot [9]. For EDGE, with the measured C/I and SNR values and the knowledge of CS/MCS the effective throughput per user can be derived [1] .Variation of throughput with SIR for different MCS has been plotted by authors in [8].…”

Section: Section Ii: Literature Surveymentioning

confidence: 99%

Assessment of spectral efficiency about 900 MHz using GSM and CDMA technologies for mobile cognitive radio

Mule

Manna²,

Nathani

2015

2015 International Conference on Pervasive Computing (ICPC)

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Basis of cognitive radio is to exploit unused frequency channels in licensed bands. Recently standardised IEEE 802.22 set of cognitive radio protocols envisages fixed and nomadic receivers at below 800 MHz bands. Existing mobile communication system uses CDMA in 800 MHz band and GSM in 900 MHz band. Research works has established that there are some vacant channels in these mobile communications bands which are permanently available and can be deployed as cognitive control channel (CCC) and cognitive pilot channel (CPC). Dynamically available vacant channels in these frequency bands can be deployed for cognitive traffic. In the present study, conventional Radio frequency scanners available for different bands and dedicated engineering handsets are used for measurement of data speed in these bands. Drive tests were carried out in dense city of Kolkata across the length and breadth and spectral efficiency value was measured from data speed. The results can be utilized to take decision for appropriate radio access technologies (RAT) to deploy for mobile cognitive radio in uplink and downlink directions in these frequency bands.

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“…The received SNR of the ith user can be approximated as a lognormal random variable with a mean m γ dB i and a standard derivation σ γ dB i [10]. In this paper, we only discuss TDM mode and the weightedtype packet scheduling algorithm.…”

Section: Capacity Dimensioning Of Wcdma With Hsdpamentioning

confidence: 99%

“…γ i can also be approximated as a lognormal random variable with a mean dB value m γ dB i and a standard derivation of dB value σ γ dB i [10]. RoT at BS can be expressed as…”

Section: Capacity Dimensioning Of Wcdma With Hsupamentioning

confidence: 99%

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An Analytical Method for Capacity Dimensioning of WCDMA with High Speed Wireless Link

Zhao¹,

Qi²,

Liang³

et al. 2007

2007 IEEE Wireless Communications and Networking Conference

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Capacity dimensioning is one of the key problems in wireless network planning. Analytical and simulation methods are usually used to pursue the accurate capacity dimensioning of wireless network. In this paper, an analytical capacity dimensioning method for WCDMA with high speed wireless link is proposed based on the analysis on relations among system performance and high speed wireless transmission technologies, such as H-ARQ, AMC and fast scheduling. It evaluates system capacity in closed-form expressions from link level and system level. Numerical results show that the proposed method can calculate link level and system level capacity for WCDMA system with HSDPA and HSUPA.

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Throughput of the 1x EV-DO system with various scheduling algorithms

Cited by 10 publications

References 8 publications

Policy-Based QoS-Aware Packet Scheduling for CDMA 1x Ev-DO

Policy-Based QoS-Aware Packet Scheduling for CDMA 1x Ev-DO

Assessment of spectral efficiency about 900 MHz using GSM and CDMA technologies for mobile cognitive radio

An Analytical Method for Capacity Dimensioning of WCDMA with High Speed Wireless Link

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