公开(公告)号：US08249094B2

公开(公告)日：2012-08-21

申请号：US11501388

申请日：2006-08-09

申请人： Pradeep K. Singh ,  Alain J. Cohen ,  Alejandro Talavera-Martinez ,  Arun Pasupathy ,  Poonam Singh ,  Ibrahim Utku Moral

发明人： Pradeep K. Singh ,  Alain J. Cohen ,  Alejandro Talavera-Martinez ,  Arun Pasupathy ,  Poonam Singh ,  Ibrahim Utku Moral

IPC分类号： H04L12/413

CPC分类号： H04W16/225 ,  H04W74/00

摘要： Simulation models of media access control and physical layer characteristics facilitate the simulation/emulation of a variety of phenomena that affect transmissions via a wireless media. Such phenomena include media access contention delays, packet drops, and retransmissions that are generally dependent upon changes in transmitter/receiver locations. Each wireless environment is characterized by a model of the communication channel that characterizes transmission effects based on the number of competing transmitters in the environment, which is dynamically determined based on the location of each node in the environment. Additionally, the location of nodes is used to simulate the effects of ‘hidden nodes’, nodes that are unknown to a transmitting node but can interfere with the reception of transmissions at a receiving node. Each device/node model in the wireless environment preferably accesses the same model of the communication channel, thereby minimizing the amount of detail required at each device model.

摘要翻译： 介质访问控制和物理层特性的仿真模型有助于模拟/仿真影响通过无线介质传输的各种现象。 这种现象包括通常取决于发射机/接收机位置的改变的媒体接入争用延迟，分组丢弃和重传。 每个无线环境的特征在于基于环境中的竞争发射机的数量来表征传输效应的通信信道的模型，其基于环境中的每个节点的位置动态地确定。 另外，节点的位置用于模拟“隐藏节点”，发送节点未知的节点的影响，但可能会干扰接收节点的传输接收。 无线环境中的每个设备/节点模型优选地访问通信信道的相同模型，从而最小化每个设备模型所需的细节量。

公开(公告)号：US08693493B2

公开(公告)日：2014-04-08

申请号：US13590088

申请日：2012-08-20

申请人： Pradeep K. Singh ,  Alain J. Cohen ,  Alejandro Talavera-Martinez ,  Arun Pasupathy ,  Vinod Jeyachandran ,  Ibrahim Utku Moral

发明人： Pradeep K. Singh ,  Alain J. Cohen ,  Alejandro Talavera-Martinez ,  Arun Pasupathy ,  Vinod Jeyachandran ,  Ibrahim Utku Moral

IPC分类号： H04L12/413

CPC分类号： H04W16/225 ,  H04W74/00

摘要： The embodiments relate to modeling wireless communications in a network. In wireless communications, the nodes share one or more wireless communication channels. When a node has data to transmit, it must contend with the other nodes for access to the wireless communication channel. In the embodiments, the model is configured to simulate the throughput effects of contention including delays caused by retransmissions due to interference and collisions, listen-and-backoff, unavailability of time slots, etc. The occurrence of failed/dropped transmissions due to buffer overflows, excessive retransmission attempts, and unintended collisions are modeled as well. In addition, the embodiments may simulate the effect of mobility by the nodes and the effect of the location of the nodes relative to each other.

摘要翻译： 实施例涉及对网络中的无线通信进行建模。 在无线通信中，节点共享一个或多个无线通信信道。 当节点具有要发送的数据时，它必须与其他节点进行竞争以访问无线通信信道。 在实施例中，该模型被配置为模拟由于干扰和冲突，收听和回退，时隙不可用等引起的重传引起的争用的吞吐量效应。由于缓冲区溢出而发生故障/丢弃的传输 ，过多的重传尝试和意外的冲突也被建模。 此外，实施例可以模拟节点的移动性的影响以及节点相对于彼此的位置的影响。

公开(公告)号：US20070036088A1

公开(公告)日：2007-02-15

申请号：US11501388

申请日：2006-08-09

申请人： Pradeep Singh ,  Alain Cohen ,  Alejandro Talavera-Martinez ,  Arun Pasupathy ,  Poonam Singh ,  Ibrahim Moral

发明人： Pradeep Singh ,  Alain Cohen ,  Alejandro Talavera-Martinez ,  Arun Pasupathy ,  Poonam Singh ,  Ibrahim Moral

IPC分类号： H04J1/16 ,  H04L12/413

CPC分类号： H04W16/225 ,  H04W74/00

摘要： Simulation models of media access control and physical layer characteristics facilitate the simulation/emulation of a variety of phenomena that affect transmissions via a wireless media. Such phenomena include media access contention delays, packet drops, and retransmissions that are generally dependent upon changes in transmitter/receiver locations. Each wireless environment is characterized by a model of the communication channel that characterizes transmission effects based on the number of competing transmitters in the environment, which is dynamically determined based on the location of each node in the environment. Additionally, the location of nodes is used to simulate the effects of ‘hidden nodes’, nodes that are unknown to a transmitting node but can interfere with the reception of transmissions at a receiving node. Each device/node model in the wireless environment preferably accesses the same model of the communication channel, thereby minimizing the amount of detail required at each device model.

摘要翻译： 介质访问控制和物理层特性的仿真模型有助于模拟/仿真影响通过无线介质传输的各种现象。 这种现象包括通常取决于发射机/接收机位置的改变的媒体接入争用延迟，分组丢弃和重传。 每个无线环境的特征在于基于环境中的竞争发射机的数量来表征传输效应的通信信道的模型，其基于环境中的每个节点的位置动态地确定。 另外，节点的位置用于模拟“隐藏节点”，发送节点未知的节点的影响，但可能会干扰接收节点的传输接收。 无线环境中的每个设备/节点模型优选地访问通信信道的相同模型，从而最小化每个设备模型所需的细节量。