Amazon.com

About: Amazon.com is a company organization based out in Seattle, Washington, United States. It is known for research contribution in the topics: Computer science & Service (business). The organization has 13363 authors who have published 17317 publications receiving 266589 citations.

Throughput Analysis of Cooperative Mobile Content Distribution in Vehicular Network using Symbol Level Network Coding

Abstract: This paper presents a theoretical study of the throughput of mobile content distribution (MCD) in vehicular ad hoc networks (VANETs). Since VANET is well-known for its fast-changing topology and adverse wireless channel environments, various protocols have been proposed in the literature to enhance the performance of MCD in a vehicular environment, using packet-level network coding (PLNC) and symbol-level network coding (SLNC). However, there still lacks a fundamental understanding of the limits of MCD protocols using network coding in VANETs. In this paper, we develop a theoretical model to compute the achievable throughput of cooperative MCD in VANETs using SLNC. By considering a one-dimensional road topology with an access point (AP) as the content source, the expected achievable throughput for a vehicle at a certain distance from the AP is derived, for both using PLNC and SLNC. Our proposed model is unique since it captures the effects of multiple practical factors, including vehicle distribution and mobility pattern, channel fading and packet collisions. Through numerical results, we provide insights on optimized design choices for network coding-based cooperative MCD systems in VANETs.

System and method for generating a path for a mobile drive unit

Abstract: A method of transporting inventory items includes receiving a route request from a mobile drive unit. The route request identifies a destination location within a workspace. The workspace includes at least one cell associated with a first cell attribute and at least one cell that is not associated with the first cell attribute. The method includes determining a state of the mobile drive unit. The method also includes generating a path to the destination location for the mobile drive unit that traverses cells associated with the first cell attribute, in response to determining that the mobile drive unit is associated with a first state. The method includes generating a path to the destination location for the mobile drive unit that does not traverse cells associated with the first cell attribute, in response to determining the mobile drive unit is not associated with the first state. The method further includes transmitting the path to the mobile drive unit.

Thumb touch interface

Abstract: In some examples, an electronic device may present a user interface that is configured to be controlled using a thumb of a single hand that is holding the device. For instance, the interface may present a plurality of selectable items, each of which may correspond to a respective one of a plurality of touch input areas on the display. In some cases, the touch input areas are within reach of the thumb, while the selectable items may be displayed on an area of the display that is not within reach of the thumb. The thumb may be pressed against the display surface with a force greater than a force threshold to select one of the selectable items. Thus, the thumb may be used to interact with the interface while remaining in contact with the display surface, enabling the user to maintain a grip on the device.

User-to-user payment service with payee-specific pay pages

Abstract: A network-based payment service provides various features for facilitating online, user-to-user payments. One feature involves the ability for users to define customized pay pages for receiving payments from other users. The pay pages are preferably hosted by a service provider site that handles the collection process, and may be created using pay page templates that specify the layouts and behaviors of the pay pages. In one embodiment, a pay page owner can also define one or more “pay boxes” to allow payments to be initiated from other web sites, which may include the web sites of associates who receive commissions on resulting payments. Another feature involves the ability for users to make single-action payments from web sites external to the service provider site. Also disclosed are various features for controlling access to content and services based on whether, or an extent to which, a visitor has made voluntary or mandatory payments.

Processing orders for wireless service

Abstract: Disclosed are various embodiments for processing orders for wireless service. An order for a wireless device and a wireless service plan is obtained in at least one computing device from a client. The wireless service plan is provided by one of a plurality of wireless carriers. A unique identifier of the wireless device is obtained from a fulfillment system after the wireless device has been pulled from an inventory for fulfillment. A request for activation of the wireless device and the wireless service plan is sent to a system of the one of the wireless carriers. The unique identifier is provided in the request to the system of the one of the wireless carriers.