Resource management in power‐controlled cellular wireless systems

Xiao, M.; Shroff, Ness B.; Chong, Edwin K. P.

doi:10.1002/wcm.6

Cited by 10 publications

(8 citation statements)

References 74 publications

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“…This is the solution adopted by the IS-95 standard (Xiao, Shroff, and Chong, 2001). Considerations on the Signal-to-Interference (SIR)-based power control are given in Section 5, where a model generalization is proposed.…”

Section: Resource Allocation Constraintsmentioning

confidence: 99%

“…The above formula (20) states that transmission power levels are related to the interference level, as expected with the SIR-based power control employed in the UTRA-TDD standard (Xiao, Shroff, and Chong, 2001). Moreover, our scheduling algorithm is assumed to operate under the assumption that the following transmission power rations are fulfilled for a user in the generic j-th ring, with j ∈ {1, 2}:…”

Section: A Model Extension and Future Research Directionsmentioning

confidence: 99%

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Packet scheduling in third-generation mobile systems with UTRA-TDD air interface

et al. 2007

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UTRA-TDD is one of the adopted air interfaces for third-generation mobile communication systems (UMTS). In UTRA-TDD, information packets are transmitted organized into radio frames. A radio frame is divided into a fixed number of time slots and different packets can be sent on the same time slot by means of the Code Division Multiple Access technique. Packets belong to different traffic classes and have different formats and Quality of Service (QoS) requirements in terms of delay, transmission error probability and priority level. In this paper, we address the problem of scheduling packets for downlink transmissions in the time slots of a frame, in such a way that QoS requirements are fulfilled. In particular, exact pseudo-polynomial and heuristic scheduling algorithms are compared in terms of typical performance parameters. Computational results for three traffic classes show that the proposed algorithms are suitable for UTRA-TDD implementation, both for solution quality and computational time.

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Section: Resource Allocation Constraintsmentioning

confidence: 99%

Section: A Model Extension and Future Research Directionsmentioning

confidence: 99%

Packet scheduling in third-generation mobile systems with UTRA-TDD air interface

et al. 2007

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“…In order to appropriately plan a mobile cellular radio network it is necessary to allocate channels to base stations (BS) so as to ensure that the network can carry sufficient traffic while avoiding interference problem [12].…”

Section: The Proposed Schemementioning

confidence: 99%

Evaluation of a channel assignment scheme in mobile network systems

Nurelmadina

Nafea

Younas

2016

Hum. Cent. Comput. Inf. Sci.

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The channel assignment problem is a complex problem which requires that under certain constraints a minimum number of channels have to be assigned to mobile calls in the wireless mobile system. In this paper, we propose a new scheme, which is based on double band frequency and channel borrowing strategy. The proposed scheme takes into account factors such as limited bandwidth of wireless networks and the capacity of underlying servers involved in processing mobile calls. It aims to ensure end-to-end performance by considering the characteristics of mobile devices. This is achieved by determining the position of users (or mobile stations) in wireless mobile systems. The proposed scheme is simulated in order to investigate its efficiency within a specific area of a large city in Saudi Arabia. Experimental results demonstrate that the proposed scheme significantly improves the performance of mobile calls as well as reduces the blocking when the number of mobile call increases.

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“…The reverse link performance of CDMA systems has been analyzed theoretically considering the use of various technologies, such as beamforming and spatial diversity. Gilhousen et al [1] estimated CDMA reverse link user capacity, considering voice traffic only, where strength-based power control [2] is assumed in the CDMA systems and total other-cell interference is modeled as Gaussian noise. Using similar methods as [1], Kim and Sung estimated the reverse link user capacity of signal-to-interference ratio (SIR)-based power-controlled CDMA systems in [3].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Performance Evaluation of 3G CDMA Networks with Beamforming

Shyy¹,

Yu²,

Yao³

2006

Wireless Pers Commun

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The second generation (2G) code-division multiple access (CDMA) IS-95A cellular network has been deployed for almost ten years. Although the system design rules and operating procedures for voice services are well established and understood, these rules and procedures need to be re-examined in light of several technology innovations. These innovations include the launch of third generation (3G) cdma2000 1× high-rate data services and the new research results in interference cancellation, antenna array and multiple-input multiple-output (MIMO) technologies.We have built a 3G cdma2000 1× cellular simulator, which simulates the physical layer using MATLAB and networking layers using OPNET Modeler, to investigate various design issues of cdma2000 1× networks. This paper explores the use of a simple beamforming model and investigates the effectiveness of deploying antenna array techniques in cdma2000 1× networks. The capacity improvement for CDMA networks using antenna array techniques is evaluated under different deployment scenarios (voice versus data services and various number of antenna elements). Based on the performance evaluation results it is proposed to utilize beamforming as one of the elements in quality of service (QOS) provisioning for data services and to couple antenna arrays with dynamic soft handoff threshold adjustment for further improvement in the system capacity.

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Resource management in power‐controlled cellular wireless systems

Cited by 10 publications

References 74 publications

Packet scheduling in third-generation mobile systems with UTRA-TDD air interface

Packet scheduling in third-generation mobile systems with UTRA-TDD air interface

Evaluation of a channel assignment scheme in mobile network systems

Modeling and Performance Evaluation of 3G CDMA Networks with Beamforming

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