Radio Interface Technologies for Cooperative Transmission in 3GPP LTE-Advanced

Abe, Toshinori; Kishiyama, Yoshihisa; Kakura, Yoshikazu; Imamura, Daichi

doi:10.1587/transcom.e94.b.3202

Cited by 21 publications

(4 citation statements)

References 22 publications

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“…The second technique which is called coordinated scheduling/beamforming, as shown in Fig. 3, is cell coordinated scheme where each cell can calculate beamforming weights for its scheduled users, so that interference to the scheduled user is mitigated in the nearest cells [19]. In fact, beamforming technique can be applied to maximize the signal energy sent to the desired users, while minimizing the interference sent toward interfering users.…”

Section: Coordinated Multipoint Transmission/reception (Comp)mentioning

confidence: 99%

Current developments in LTE-ADVANCED: Radio resource management review

Ismail

Johal

Isa

2014

2014 IEEE Student Conference on Research and Development

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This paper provides a review of current technology components currently used by OFDMA-based Long Term Evolution-Advanced (LTE-Advanced). LTE-Advanced significantly enhanced the previous versions of LTE Release 8/9 to support higher data rates and wider coverage resulting in best experience for users. Some of the technologies discussed in this paper are enhanced Multiple Input Multiple Output (MIMO), advanced repeaters or known as relaying systems, coordinated multipoint transmission/reception and carrier aggregation to expand the capability of the bandwidth spectrum. Among the issues addressed in this paper are related to balancing of transmit power control for both base stations and relay stations and also frequency spectrum allocation in order to avoid any interference within a mobile cell. This also includes how to manage different types of interferences such as intercell interference, intersymbol and intercarrier interferences in the LTE-Advanced system.

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Section: Coordinated Multipoint Transmission/reception (Comp)mentioning

confidence: 99%

Current developments in LTE-ADVANCED: Radio resource management review

Ismail

Johal

Isa

2014

2014 IEEE Student Conference on Research and Development

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“…Multipoint transmission is a promising technique for the traditional as well as for the higher frequency bands for improving the received signal level, and for providing the channel diversity . In coordinated multipoint transmission, the coordination is developed among the geographically/spatially separated transmission points.…”

Section: Introductionmentioning

confidence: 99%

Analysis of multipoint transmission at higher frequencies using 3‐D ray tracing

Sheikh

Lempiainen

2017

Int J Communication

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The target of this article is to analyze the impact of multipoint transmission e.g. joint transmission (JT) in an outdoor microcellular environment at 15 and 28 GHz frequency through simulations. The impact of the JT threshold i.e. the threshold for switching between the single and multipoint transmission mode is also analyzed in this article. For this research activity, a "sAGA" MATLAB based 3-D ray tracing tool is used for the simulation purpose. The received signal power and throughput are used as a performance metrics for the analysis. The simulation results show that the JT from two transmission ports provides up to 12.46% and 17.78% of relative throughput gain with respect to the transmission from single port at 15 and 28 GHz, respectively. The multipoint transmission with certain decibels (dBs) of JT threshold is found to be more efficient compared with the undefined JT threshold. In the light of simulation results, the JT is found as a promising technique for compensating the propagation loss at higher frequencies, and especially in a critical handover region the multipoint transmission helps in making a smooth handover.

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“…The coordination between different transmission points is based on the geographical location and the spatial separation. CoMP helps to improve the quality and the strength of the received signal [9][10]. Furthermore, the coordination can occur between the cells of the same base station or different base stations [9].…”

mentioning

confidence: 99%

“…CoMP helps to improve the quality and the strength of the received signal [9][10]. Furthermore, the coordination can occur between the cells of the same base station or different base stations [9]. Coordinated Multipoint transmission can be categorized into following three categories, (1) Dynamic Point Selection (DPS) [11], (2) Joint Transmission (JT), and (3) Coordinated Beamforming/ Scheduling (CB/CS) [12].…”

mentioning

confidence: 99%

Assessment of Coordinated Multipoint Transmission Modes for Indoor and Outdoor Users at 28 GHz in Urban Macrocellular Environment

Sheikh¹,

Biswas²,

Lempiainen³

et al. 2019

Adv. sci. technol. eng. syst. j.

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The aim of this article is to analyze and evaluate the performance of Coordinated Multipoint (CoMP) transmission approach at a frequency of 28 GHz using three dimensional ray tracing simulations in an urban macrocellular environment. The new performance metric introduced in this article is the relative power usage. Other performance metrics examined in this article are received power, the Signal to Interference plus Noise Ratio (SINR), user throughput, relative throughput gain, and the percentage of overlapping area with multiple cells. Indoor and outdoor users are separately analyzed for few key performance indicators. Different cases of coordinated multipoint transmission i.e. intra-node and inter-node coordination is analyzed. The post analysis of the acquired simulation data shows that the use of CoMP functionality is more beneficial for the cell edge users compared with the other users in terms of improving the user's experience. The throughput gain as well as the transmission overhead of the CoMP approach increases with the increase in number CoMP ports. Inter-node CoMP is much more power efficient and beneficial in comparison with the intra-node CoMP case.

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Radio Interface Technologies for Cooperative Transmission in 3GPP LTE-Advanced

Cited by 21 publications

References 22 publications

Current developments in LTE-ADVANCED: Radio resource management review

Current developments in LTE-ADVANCED: Radio resource management review

Analysis of multipoint transmission at higher frequencies using 3‐D ray tracing

Assessment of Coordinated Multipoint Transmission Modes for Indoor and Outdoor Users at 28 GHz in Urban Macrocellular Environment

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