Device-to-device contention management scheme for mobile broadband networks

摘要

Device-to-device (D2D) contention management systems and methods provide managed offloading of cellular network traffic through a contention-based network. For each link in a group of links between nodes in the contention-based network, a link cost is calculated to determine a number of potential links that may interfere with the link, if activated. Each link is evaluated in the order of ascending link cost to determine whether it complies with predefined conditions and whether activating the link increases or decreases D2D network throughput. If the link increases throughput, the link is activated.

主权项

1. A server for managing network traffic offloaded from a wireless cellular network to a device-to-device (D2D) contention-based network, the server comprising:
a processor; and memory storing instructions that, when executed by the processor, cause the server to manage communications between user equipments (UEs) in the D2D contention-based network, at least two of the UEs configured to selectively communicate with each other through a core network of the wireless cellular network and through the D2D contention-based network, wherein the instructions cause the server to:
define a first set of links in the D2D contention-based network;for each link in the first set, calculate a link cost corresponding to a conflict with one or more other links in the first set, wherein the link cost for each link is based on a total number of links in the first set with which each link would interfere if activated;in order of ascending link cost, evaluate each link in the first set to select a second set of links from among the first set that, when activated, increases a sum throughput of data packets communicated between the UEs; andcommunicate a message to the UEs to activate the second set of links during an offload period.