The study of performance enhancement for integrated voice/data wireless networks by link adaptation

Liu, Hung-Huan; Wu, Jean-Lien C.; Lu, Li-Liann

doi:10.1016/j.comcom.2004.09.012

Cited by 6 publications

(20 citation statements)

References 21 publications

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“…To our knowledge, few studies exist ( [2] and [8]) that have evaluated the performance of integrated voice/data cellular networks at the system level when Link Adaptation (LA) is used. However, both [2] and [8] considered neither ARA nor DRA.…”

Section: Introductionmentioning

confidence: 99%

“…: GPRS). Even when GPRS can provide users data connections with multiple data rates through multi-slot allocation (that is, multiple channels can be allocated to a user to increase the transmission rate), it is important to notice that most of the studies on system level performance of GSM/GPRS or integrated voice/data cellular networks reported in the literature have considered single-slot transmission [2], [8]- [13]. Ni and Haggman showed that multi-slot service in GPRS results in higher blocking probability and longer delay than single-slot service [14].…”

Section: Introductionmentioning

confidence: 99%

“…As stated in [2], few studies exist in the literature that addresses the performance of a wireless network with LA by means of a teletraffic analysis (i.e., system level analysis). To our knowledge, only [2] and [8] have paid attention to this issue in an integrated voice/data cellular network (i.e. : GPRS).…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, in EGPRS, nine coding/modulation combination schemes are defined. As stated in [2], the efficiency of LA has been generally demonstrated by means of link level performance evaluations in terms of spectral efficiency (b/s/Hz/Sector) and link throughput (kbps) (i.e., previous works have mainly focused on a specified transmitter receiver pair and studied the bitlevel performance between the pair under certain channel conditions, user mobility, code switching selection, etc.) [3]- [7].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic resource allocation in integrated voice/data wireless networks with link adaptation

Sandoval-Arechiga

Cruz-Perez

Ortigoza-Guerrero³

2005

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005.

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In this paper, the performance of dynamic resource allocation and channel de-allocation in integrated voice/data wireless networks with link adaptation is mathematically analyzed and evaluated. To our knowledge, all previous related works published in the literature have considered only link adaptation (LA) or dynamic resource allocation (DRA) separately. Additionally, a DRA strategy with link quality-aware prioritized channel de-allocation (called DRA LA DAS) is proposed. With the DRA LA DAS scheme that calls with the greatest number of channels and the worst link quality are degraded first. In this way, in DRA LA DAS preference is given to data users with good quality link which, on average, retain resources less time than data users with bad quality link. Numerical results show that the proposed DRA LA DAS strategy significantly improves system performance. The GSM/GPRS system is used as a case study. The GSM voice new call blocking and forced termination probabilities, GPRS packet dropping probability, average GPRS packet transmission time, and channel utilization are analyzed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dynamic resource allocation in integrated voice/data wireless networks with link adaptation

Sandoval-Arechiga

Cruz-Perez

Ortigoza-Guerrero³

2005

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005.

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“…RUNE, originated as a research project at Ericsson, is a special purpose simulator to simulate heterogeneous wireless networks. It is well verified and extensively used in the field of wireless communications [29,91,[135][136][137]. Several models, including system, mobility, propagation, and traffic, are created using RUNE.…”

Section: Simulation Setup and Environmentmentioning

confidence: 99%

VHITS: Vertical Handoff Initiation and Target Selection in a Heterogeneous Wireless Network

Kaleem¹

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Teletraffic Analysis for the Performance Evaluation of De-Allocation/Re-Allocation Strategies in GSM/GPRS Cellular Networks

Sandoval-Arechiga

Cruz-Perez

Ortigoza-Guerrero³

2007

2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications

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A teletraffic analysis for the performance evaluation of the joint use of Dynamic Resource Allocation (DRA), Channel De-Allocation (DAS), and Channel Re-Allocation (RAS) strategies in GSM/GPRS networks is developed. In addition, an efficient DRA strategy with a link quality awareness policy, Channel De-Allocation and Re-Allocation policies as well as user prioritization (called DRA LA DAS RAS) is proposed. To the authors' knowledge, most related works have either studied Link Adaptation (LA) or Dynamic Resource Allocation (DRA) strategies as independent topics but have failed to address their combined effect on GSM/GPRS systems. DRA LA DAS RAS uses both call degradation and call compensation techniques. Calls with the largest number of channels allocated and the worst link quality are degraded first. Conversely, calls with the lowest number of channels allocated and the best link quality are upgraded first. This allows upgraded calls to release resources more rapidly, making them readily available for new calls. Numerical results show that the proposed DRA LA DAS RAS strategy significantly improves system performance, i.e. up to 82% (74%) {58%} [37%] <27%> less blocking probability relative to the DRA (DRA LA with p=0.75) {DRA DAS} [DRA LA DAS with p=0.75] strategy.

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The study of performance enhancement for integrated voice/data wireless networks by link adaptation

Cited by 6 publications

References 21 publications

Dynamic resource allocation in integrated voice/data wireless networks with link adaptation

Dynamic resource allocation in integrated voice/data wireless networks with link adaptation

VHITS: Vertical Handoff Initiation and Target Selection in a Heterogeneous Wireless Network

Teletraffic Analysis for the Performance Evaluation of De-Allocation/Re-Allocation Strategies in GSM/GPRS Cellular Networks

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