Base station

About: Base station is a research topic. Over the lifetime, 85883 publications have been published within this topic receiving 1019303 citations. The topic is also known as: Mobile phone base stations & BS.

Flexible power modeling of LTE base stations

Abstract: With the explosion of wireless communications in number of users and data rates, the reduction of network power consumption becomes more and more critical. This is especially true for base stations which represent a dominant share of the total power in cellular networks. In order to study power reduction techniques, a convenient power model is required, providing estimates of the power consumption in different scenarios. This paper proposes such a model, accurate but simple to use. It evaluates the base station power consumption for different types of cells supporting the 3GPP LTE standard. It is flexible enough to enable comparisons between state-of-the-art and advanced configurations, and an easy adaptation to various scenarios. The model is based on a combination of base station components and sub-components as well as power scaling rules as functions of the main system parameters.

Signaling over MIMO Multi-Base Systems: Combination of Multi-Access and Broadcast Schemes

Abstract: A new structure for multi-base systems is studied in which each user receives data from two nearby base stations, rather than only from the strongest one. This system can be considered as a combination of broadcast andmulti-access channels. By taking advantages of both perspectives, an achievable rate region for a discrete memoryless channel modeled by Pr(y1, y2|x1, x2) is derived. In this model, x1 and x2 represent the transmitted signals by the transmitter one and two, respectively, and y1 and y2 denote the received signals by the receiver one and two, respectively. In this derivation, it is assumed that each transmitter is unaware of the data of the other transmitter, and therefore x1 and x2 are independent. To investigate the advantage of this scheme, an efficient signaling method which works at a corner point of the achievable region for multiple-antenna scenarios is developed. In the proposed scheme, each base station only requires the state information of the channels between the other base station and each user. In this paper, the signaling scheme is elaborated for the case that each transmitter/reciever is equipped with three antennas. It is proven that in such a scenario, the multiplexing gain of four is achievable, which outperforms any other conventional schemes.

Relays, base stations, and meshes: enhancing mobile networks with infrastructure

Abstract: Networks composed of mobile nodes inherently suffer from intermittent connections and high delays Performance can be improved by adding supporting infrastructure, including base stations, meshes, and relays, but the cost-performance trade-offs of different designs is poorly understood To examine these trade-offs, we have deployed a large-scale vehicular network and three infrastructure enhancement alternatives The results of these deployments demonstrate some of the advantages of each kind of infrastructure; however, these conclusions can be applied only to other networks of similar characteristics, including size, wireless technologies, and mobility patterns Thus we complement our deployment with a demonstrably accurate analytical model of large-scale networks in the presence of infrastructureBased on our deployment and analysis, we make several fundamental observations about infrastructure-enhanced mobile networks First, if the average packet delivery delay in a vehicular deployment can be reduced by a factor of two by adding x base stations, the same reduction requires 2x mesh nodes or 5x relays Given the high cost of deploying base stations, relays or mesh nodes can be a more cost-effective enhancement Second, we observe that adding small amount of infrastructure is vastly superior to even a large number of mobile nodes capable of routing to one another, obviating the need for mobile-to-mobile disruption tolerant routing schemes

Method and apparatus for providing channel state information-reference signal (csi-rs) configuration information in a wireless communication system supporting multiple antennas

Abstract: A method and apparatus for transmitting and receiving a Channel State Information-Reference Signal (CSI-RS) in a wireless communication system supporting multiple antennas are disclosed. The method includes transmitting, at a base station, information of one or more CSI-RS configurations to a mobile station, wherein the one or more CSI-RS configurations include one CSI-RS configuration for which the mobile station assumes non-zero transmission power for CSI-RS, transmitting, at the base station, information indicating a CSI-RS configuration for which the mobile station assumes zero transmission power for the CSI-RS among the one or more CSI-RS configurations to the mobile station, mapping, at the base station, CSI-RSs to resource elements of a downlink subframe based on the one or more CSI-RS configurations, and transmitting, at the base station, the downlink subframe mapped with the CSI-RSs to the mobile station.