Arnaud Meylan

Bio: Arnaud Meylan is an academic researcher from Qualcomm. The author has contributed to research in topics: Network packet & Wireless network. The author has an hindex of 42, co-authored 186 publications receiving 5002 citations.

High speed media access control

Abstract: Embodiments disclosed herein for MAC processing for efficient use of high throughput systems and that may be backward compatible with various types of legacy systems. In one aspect, a data transmission structure comprises a consolidated poll and one or more frames transmitted in accordance with the consolidated poll. In another aspect, a Time Division Duplexing (TDD) data transmission structure comprises a pilot, a consolidated poll, and zero or more access point to remote station frames in accordance with the consolidated poll. In one aspect, frames are transmitted sequentially with no or substantially reduced interframe spacing. In another aspect, a guard interframe spacing may be introduced between frames transmitted from different sources, or with substantially different power levels. In another aspect, a single preamble is transmitted in association with one or more frames. In another aspect, a block acknowledgement is transmitted subsequent to the transmission of one or more sequential frames.

Method and system for providing beamforming feedback in wireless communication systems

Abstract: Techniques for quickly sending feedback information for beamforming are described A transmitter/initiator sends a first frame comprising training symbols A receiver/responder receives the first frame, determines the amount of time to generate feedback information, and determines the amount of time to send the feedback information The receiver then determines the length of a second frame carrying the feedback information based on the amounts of time to generate and send the feedback information The receiver sends the second frame after waiting a short interframe space (SIFS) period from the end of the first frame, without performing channel access The receiver generates the feedback information based on the training symbols and sends the information in the second frame when ready The transmitter receives the second frame, derives at least one steering matrix based on the feedback information, and sends a third frame with the at least one steering matrix

System and method of offloading traffic to a wireless local area network

Abstract: Methods and apparatus for offloading traffic from a cellular network to a wireless local area network (WLAN) are described. One example method generally includes receiving, from a serving base station, a request to measure one or more WLAN access points (APs), determining one or more metrics for the WLAN APs, comparing the metrics for the WLAN APs to a threshold, and reporting metrics for at least a first AP of the WLAN APs if the metrics for the first AP exceed the threshold.

Efficient operation for co-located WLAN and Bluetooth

Abstract: Techniques to enable efficient operation of co-located WLAN and Bluetooth devices are described. A station (e.g., a cellular phone or a laptop computer) determines the activity of a Bluetooth device and ascertains idle periods of the Bluetooth device. The station communicates with an access point in a WLAN during the idle periods of the Bluetooth device. The station may operate in a power save mode with the access point, send a poll frame to the access point during an idle period, and retrieve the buffered data from the access point during the idle period. The station may also operate in an unscheduled APSD mode with the access point, send a trigger frame to the access point during an idle period to start a service period, and exchange data with the access point during the service period.

Wireless handoffs between multiple networks

Abstract: The disclosure is directed to an access terminal, and method for selecting an access point for handing off the access terminal. The access terminal may include a processor. The processor may be configured to access a list access points and select one of the access points on the list based on the current traffic state of the access terminal.

MIMO WLAN system

Abstract: A multiple-access MIMO WLAN system that employs MIMO, OFDM, and TDD. The system (1) uses a channel structure with a number of configurable transport channels, (2) supports multiple rates and transmission modes, which are configurable based on channel conditions and user terminal capabilities, (3) employs a pilot structure with several types of pilot (e.g., beacon, MIMO, steered reference, and carrier pilots) for different functions, (4) implements rate, timing, and power control loops for proper system operation, and (5) employs random access for system access by the user terminals, fast acknowledgment, and quick resource assignments. Calibration may be performed to account for differences in the frequency responses of transmit/receive chains at the access point and user terminals. The spatial processing may then be simplified by taking advantage of the reciprocal nature of the downlink and uplink and the calibration.

Telecommunications apparatus and methods

Abstract: A wireless telecommunication system comprises base stations for communicating with terminal devices. One or more base stations support a power boost operating mode in which a base station's available transmission power is concentrated in a subset of its available transmission resources to provide enhanced transmission powers as compared to transmission powers on these transmission resources when the base station is not operating in the power boost mode. A base station establishes an extent to which one or more base stations in the wireless telecommunications system support the power boost operating mode conveys an indication of this to a terminal device. The terminal device receives the indication and uses the corresponding information to control its acquisition of a base station of the wireless telecommunication system, for example by taking account of which base stations support power boosting and/or when power boosting is supported during a cell attach procedure.

Mobile communication method and radio base station

Abstract: In a mobile communication method by which a mobile station (UE) transmits a control signal to a radio base station (eNB) in an uplink by using an uplink dedicated resource, different methods for determining whether or not a synchronization state is established in the uplink, are used depending on whether or not the uplink dedicated resource is set up.

Method and arrangement in a telecommunication system

Abstract: There is provided a method of determining latency in a remote network element of a telecommunications network. In one embodiment, the method comprises receiving a message at a network element, the message comprising a time stamp of the time at which it was sent from a source network element. On receiving the message, the network element obtains another time stamp, and so may determine the time for the message to be sent between the network elements. In further embodiments, a source network element may gain an implicit indication of the workload of the remote network element by sending a first message to the remote network element and determining a length of time before the remote network element sends a second message back to the source network element.

Method of performing random access procedure in wireless communication system

Abstract: A method includes transmitting a random access preamble, receiving a random access response as a response of the random access preamble, wherein the random access response comprises an uplink resource assignment and a request for transmission of a Channel Quality Indicator (CQI), and transmitting the CQI in the uplink resource assignment.