公开(公告)号：US20180309659A1

公开(公告)日：2018-10-25

申请号：US15927746

申请日：2018-03-21

Applicant: MEDIATEK INC.

Inventor： LI-CHUN KO ,  RONGSHENG HUANG

IPC: H04L12/721 ,  H04W40/08

CPC classification number: H04L45/124 ,  H04W40/08 ,  H04W40/246 ,  H04W84/18

Abstract: Methods of establishing a bidirectional route between a route originator node and a route destination node in a wireless mesh network include the route originator node broadcasting a route request message to relay nodes in the network. The route request message identifies the route destination node as the final destination for the route request message and also identifies a transmitted power level. The relay nodes determine whether the link with the route originator node is bidirectional using the transmitted power level and the received signal strength to determine the power loss over the link and then by comparing its transmission power level to that power loss. The relay node forwards the route request message when the first link is bidirectional. This process is repeated at each node that receives the route request message until the route request message reaches the route destination mode.

公开(公告)号：US20160183305A1

公开(公告)日：2016-06-23

申请号：US14977632

申请日：2015-12-21

Applicant: MEDIATEK INC.

Inventor： RONGSHENG HUANG ,  Tianyu Wu ,  Jianhan Liu ,  Chao-Chun Wang ,  Chih-Shi Yee

IPC: H04W74/08

CPC classification number: H04W74/0833 ,  H04W74/02

Abstract: A method of improved allocation of uplink resources in an OFDMA network is proposed. A wireless communications station (an AP) reserves both dedicated resource and contention resource for uplink OFDMA operation for a list of communications devices (STAs). The AP can switch between random access operation and non-random access operation without the need for any special protection mechanisms. In the event of an increase in uplink OFDMA frame collisions the AP can switch from random operation to non-random operation to reduce the number of collisions. In the event of a decrease in uplink OFDMA frame collisions the AP can switch from non-random operation to random operation to reduce required AP processing. The AP can also dynamically control a STA access probability to reduce the number of collisions by reducing the number of uplink OFDMA frames each STA transmits.

Abstract translation: 提出了一种改善OFDMA网络中上行链路资源分配的方法。 无线通信站（AP）为通信设备（STA）列表的上行链路OFDMA操作保留专用资源和争用资源。 AP可以在随机访问操作和非随机访问操作之间切换，而不需要任何特殊的保护机制。 在上行链路OFDMA帧冲突增加的情况下，AP可以从随机操作切换到非随机操作，以减少冲突次数。 在上行链路OFDMA帧冲突减少的情况下，AP可以从非随机操作切换到随机操作，以减少所需的AP处理。 AP还可以通过减少每个STA发送的上行链路OFDMA帧的数量来动态地控制STA接入概率以减少冲突的数量。