Frequency Coordination Between UMTS and GSM Systems at 900 MHZ

Vanghi, V.; Sağlam, M.; Jiang, Jindi

doi:10.1109/pimrc.2007.4394049

Cited by 4 publications

(2 citation statements)

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“…Re-farming of 900 MHz band into HSPA has started [1] and it is believed that it can be applied later to LTE. W-CDMA (UMTS) is already deployed in the 900 MHz band [2]. In [3] the performance of UMTS900 is compared with UMTS2100.…”

Section: Introductionmentioning

confidence: 99%

Novel Teletraffic Analysis of GSM/EDGE Orthogonal Sub Channel (OSC) and Application to Spectrum Re-farming

Alaa

Tawfik

2014

Frequenz

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GSM network operators are required to free up some of the spectrum allocated for voice traffic in order to serve 3G and 4G users. Re-farming 900 MHz and 1800 MHz bands into HSPA, W-CDMA (UMTS) and LTE is a challenge faced by operators with growing GSM voice traffic as 3G systems require 5 MHz bandwidth which is 25 times more bandwidth than a typical GSM channel. 4G systems (LTE) may even use 10 MHz to show superiority over the 5 MHz 3G systems. It is required to cope with the GSM voice traffic with significantly less bandwidth in order to accommodate 3/4G users. Orthogonal Sub Channel (OSC) is a novel technique offering efficient hardware utilization that can result in doubling GSM voice capacity. This is achieved by allowing two users to share the same physical radio resources. OSC can be used in phasing-out GSM networks to release significant frequency spectrum for 3/4G users. In this work, a thorough analysis on OSC performance gain is presented. The hard capacity gain offered by OSC is calculated as a function of the OSC penetration and compared with system level simulations. It is shown that hard capacity can be maintained with less number of TRXs (transceivers), and consequently, narrower spectrum. This paves the way for re-farming the released GSM spectrum into 3/4G traffic.

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Section: Introductionmentioning

confidence: 99%

Novel Teletraffic Analysis of GSM/EDGE Orthogonal Sub Channel (OSC) and Application to Spectrum Re-farming

Alaa

Tawfik

2014

Frequenz

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“…Otros trabajos identificados se han centrado en como asegurar la coexistencia de los sistemas GSM con otros sistemas, como UMTS, LTE o WiMAX, sin interferencias. Entre ellos se pueden señalar (H. Holma et al, 2007), (Vanghi, Saglam, & Jiang Jindi, 2007), (Marache & Char, 2008) así como los realizados por el propio CEPT y ECC que analizan la compatibilidad de los sistemas GSM con UMTS (ECC, 2006a) y LTE y WiMAX (CEPT, 2010b). Existen también otros estudios que analizan como optimizar el uso de las frecuencias por los sistemas GSM con el objetivo de liberar espectro para introducir estos nuevos sistemas.…”

Section: Costes Y Beneficios Asociados a La Reutilización De Frecuenc...unclassified

Aplicación del análisis tecno-económico a la gestión del espectro radioeléctrico. El caso de la reutilización de las bandas GSM en Europa

Caballero¹

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WiMAX and Bluetooth

Yoon

2011

IEEE Veh. Technol. Mag.

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Frequency Coordination Between UMTS and GSM Systems at 900 MHZ

Cited by 4 publications

References 1 publication

Novel Teletraffic Analysis of GSM/EDGE Orthogonal Sub Channel (OSC) and Application to Spectrum Re-farming

Novel Teletraffic Analysis of GSM/EDGE Orthogonal Sub Channel (OSC) and Application to Spectrum Re-farming

Aplicación del análisis tecno-económico a la gestión del espectro radioeléctrico. El caso de la reutilización de las bandas GSM en Europa

WiMAX and Bluetooth

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