In one aspect of the present invention, a network gateway is configured to facilitate on line and off line bi-directional communication between a number of near end data and telephony devices with far end data termination devices via a hybrid fiber coaxial network and a cable modem termination system. The described network gateway combines a QAM receiver, a transmitter, a DOCSIS MAC, a CPU, a voice and audio processor, an Ethernet MAC, and a USB controller to provide high performance and robust operation.

Gateway with voice

A data interface for transferring digital data between a host and a client over a communication path using packet structures linked together to form a communication protocol for communicating a pre-selected set of digital control and presentation data. The signal protocol is used by link controllers configured to generate, transmit, and receive packets forming the communications protocol, and to form digital data into one or more types of data packets, with at least one residing in the host device and being coupled to the client through the communications path. The interface provides a cost-effective, low power, bi-directional, high-speed data transfer mechanism over a short-range “serial” type data link, which lends itself to implementation with miniature connectors and thin flexible cables which are especially useful in connecting display elements such as wearable micro-displays to portable computers and wireless communication devices.

High data rate interface apparatus and method

Range expansion and inter-cell interference coordination (ICIC) can improve the capacity and fairness of heterogeneous network (HetNet) deployments by off-loading macrocell users to low-power nodes. Due to difficulties in analytical treatment, current studies for range expansion and ICIC in HetNets rely mostly on simulations. In this letter, first, off-loading benefits of range expansion in HetNets are captured through cumulative distribution functions (CDFs) of the downlink signal to interference plus noise ratio (SINR) difference between the macrocell and strongest picocell signals. Then, these CDFs are used to investigate the system capacity and fairness as a continuous function of the range expansion bias, and benefits of using ICIC with range expansion are demonstrated through numerical results.

Capacity and Fairness Analysis of Heterogeneous Networks with Range Expansion and Interference Coordination

Disclosed is a communication system in which information about the number of active users in each cell can be shared between base stations A communication system according to the present exemplary embodiment includes a first base station controlling a first cell and a second base station connected to the first base station through an inter-base-station interface, wherein the first base station transmits operation information on the first cell to the second base station through the inter-base-station interface, wherein the operation information on the first cell includes information about a load on the first cell and information about the number of active users in the first cell

Communication system, base station, and communication method

The Mobile and wireless communications Enablers for the Twenty-twenty Information Society (METIS) project is laying the foundations of Fifth Generation (5G) mobile and wireless communication system putting together the point of view of vendors, operators, vertical players, and academia. METIS envisions a 5G system concept that efficiently integrates new applications developed in the METIS horizontal topics and evolved versions of existing services and systems. This article provides a first view on the METIS system concept, highlights the main features including architecture, and addresses the challenges while discussing perspectives for the further research work.

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METIS research advances towards the 5G mobile and wireless system definition

Deploying Pico eNodeBs (PeNBs) throughout a Macro cell layout is a promising solution to enhance system capacity and user throughput. However, strong received power from Macro eNodeBs (MeNBs) makes the Pico cell areas narrow. This causes limited cell splitting gain. Cell Range Expansion (CRE), which allows a User Equipment (UE) to be served by a cell with weaker received power, is simple and typical one of alternative cell associations to enhance offloading but it causes downlink (DL) interference issue in not only data and also control channels (CCHs). In this paper, we investigate performance of CRE with various bias settings and show that a moderate bias setting is effective to enhance capacity and user throughput. With respect to the DL interference issue in CCHs, we propose to support coordination of Lightly Loaded CCH transmission Subframe (LLCS) in LTE-Advanced.

Pico Cell Range Expansion with Interference Mitigation toward LTE-Advanced Heterogeneous Networks

A radio communication system comprises a macro-cell base station (MeNB) and a pico-cell base station (PeNB). The macro-cell base station (MeNB) transmits, to the pico-cell base station (PeNB), a throughput representative value (MT) determined from the throughput of each of a plurality of radio terminals connected to the macro-cell base station (MeNB). The pico-cell base station (PeNB) receives the throughput representative value (MT) from the macro-cell base station (MeNB) and changes a bias value on the basis of the received throughput representative value (MT) and a throughput representative value (PT) determined from the throughput of each of a plurality of radio terminals connected to the pico-cell base station (PeNB), thereby adjusting the coverage of the pico-cell base station (PeNB).

Radio communication system, radio base station, and communication control method

An acoustic echo canceller for cancelling an acoustic echo component produced when a signal on a receiving communication line appears on a transmitting communication line via an acoustic echo path. In the acoustic echo canceller, a variable coefficient series is divided into blocks, among which selected is a block requiring a coefficient correction amount update operation conforming to the attenuation characteristic of an impulse response in a sound field. A coefficient fitted to the attenuation characteristic of the impulse response in the sound field is set for the selected block. Therefore, convergence speed degradation of the acoustic echo cancellation characteristic involved in divided update can be compensated, and even if an echo path characteristic fluctuates, an excellent follow-up characteristic is provided, so that stable and high-speed acoustic echo cancellation can always be executed.

Acoustic echo canceller

Disclosed is a wireless base station (eNB1) provided with a storage unit (130) for storing base station information for selecting the destination of a message, a network communication unit (140) for transmitting the message to another wireless base station selected according to the base station information, and a control unit (120) for controlling the storage unit (130) to set as base station information the priority level of the wireless base station to which the message was sent according to the state of response to the transmitted message.

Wireless base station, wireless communication system, and control method

A radio base station (eNB1), which is used in a radio communication system that can autonomously adjust, based on load information transmitted/received between radio base stations, the radio base station parameters used for defining coverage, comprises: a network communication unit (140) that can receive, from another radio base station, first load information indicating the load level of the other radio base station and that can transmit, to the other radio base station, a request for transmission of second load information the information amount of which is greater than that of the first load information; and a control unit (120) that, when the load level of the other radio base station indicated by the received first load information satisfies a given condition, controls such that the request for transmission of the second load information is transmitted to the other radio base station.

Yoshimasa Kusano

Papers

Pico Cell Range Expansion with Interference Mitigation toward LTE-Advanced Heterogeneous Networks

Radio communication system, radio base station, and communication control method

Acoustic echo canceller

Wireless base station, wireless communication system, and control method

Radio base station, radio communication system, and control method