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    • 32. 发明申请
    • Smart Adjustment of Backoff Counter and Contention Window for Improved Random Access
    • 智能调整后退计数器和竞争窗口,改进随机访问
    • US20100195664A1
    • 2010-08-05
    • US12697098
    • 2010-01-29
    • Jin-Meng Ho
    • Jin-Meng Ho
    • H04L12/413
    • H04L12/413
    • A method and system for random access control is disclosed. A backoff counter is used to determine the start time of a contended allocation for a device. The backoff counter is set to an integer randomly drawn from the interval [1, CW], where CW is a contention window value selected based upon the priority of the traffic to be transmitted. The backoff counter is decremented for each idle contention slot detected. When the backoff counter reaches zero, the device attempts to transmit in the next contention slot. If the device receives no acknowledgement or an incorrect acknowledgment, then the transmission has failed. After a failed transmission, CW is set by alternately doubling the CW value up to a CWmax value for the user priority. CW is unchanged, if it was doubled in the last setting; and CW is doubled, if it was unchanged in the last setting.
    • 公开了一种用于随机存取控制的方法和系统。 退货计数器用于确定设备的竞争分配的开始时间。 退避计数器设置为从区间[1,CW]中随机抽取的整数,其中CW是基于要发送的流量的优先级选择的竞争窗口值。 对于检测到的每个空闲争用时隙,退避计数器递减。 当退避计数器达到零时,设备尝试在下一个争用时隙中进行传输。 如果设备没有收到确认或错误的确认,则传输失败。 发送失败后,通过将CW值交替加倍至用户优先级的CWmax值来设置CW。 CW在不变的情况下,如果在最后一个环境中翻倍; 如果在最后一个设置中没有变化,CW将加倍。
    • 34. 发明申请
    • CENTRALIZED CONTENTION AND RESERVATION REQUEST FOR QOS-DRIVEN WIRELESS LANS
    • QOS-DRIVEN无线局域网的集中式内容和预留请求
    • US20100080188A1
    • 2010-04-01
    • US12633769
    • 2009-12-08
    • Jin-Meng HoWei Lin
    • Jin-Meng HoWei Lin
    • H04W4/00
    • H04W74/0808H04W28/14H04W28/26H04W74/006H04W74/08H04W84/12
    • A method and a system is disclosed for providing quality of service (QoS)-driven channel access within a basic service set (BSS) in a wireless local area network (WLAN). A contention control (CC) frame is sent from a point coordinator (PC) of the BSS during a contention-free period (CFP) of a superframe that includes the contention-free period (CFP) and a contention period (CP). The CC frame contains information relating to at least one of a priority limit for a next centralized contention interval (CCI), a length of the next CCI, a permission probability associated with the next CCI and information relating to a reservation request (RR) frame successfully received by the PC in a previous CCI. A non-colliding RR frame is then received at the PC in the CCI following the CC frame. The received RR frame is sent from a non-PC station in the BSS when at least one centralized contention opportunity (CCO) is available during the CCI after the CC frame. The RR frame indicates that the non-PC station sending the RR frame has at least one buffered data frame for transmission.
    • 公开了用于在无线局域网(WLAN)中的基本服务集(BSS)内提供服务质量(QoS) - 驱动信道访问的方法和系统。 在包含无竞争周期(CFP)和争用周期(CP)的超帧的无争用时段(CFP)期间,从BSS的点协调器(PC)发送争用控制(CC)帧。 CC帧包含与下一个集中式争用间隔(CCI)的优先级限制,下一个CCI的长度,与下一个CCI相关联的许可概率以及与预留请求(RR)帧有关的信息中的至少一个的信息 PC在以前的CCI中成功接收。 然后在CC帧之后的CCI处,在PC处接收非冲突的RR帧。 当在CC帧之后的CCI期间至少有一个集中式竞争机会(CCO)可用时,接收到的RR帧从BSS中的非PC站发送。 RR帧指示发送RR帧的非PC站具有至少一个用于传输的缓冲数据帧。
    • 35. 发明授权
    • Beacon coordination and medium access
    • 信标协调和媒体访问
    • US07668126B2
    • 2010-02-23
    • US11011963
    • 2004-12-14
    • Jin-Meng Ho
    • Jin-Meng Ho
    • H04B13/00H04L12/28H04L12/56
    • H04W48/12
    • Each of a plurality of nodes in a wireless network is capable of generating, transmitting, and receiving beacons in a distribute fashion. Each beacon contains information regarding the order of which other nodes are to transmit beacons and wireless medium access information at to when various nodes are to access the network. Nodes that are in separate “extended neighborhoods” are permitted to transmit their beacons simultaneously without risking beacon collisions. The beacons contain information that is used to ensure this result. Using the distributed beacon mechanism, each nod can reserve access to the wireless medium. In the disclosed embodiments, a central coordinator is not needed.
    • 无线网络中的多个节点中的每一个能够以分布的方式生成,发送和接收信标。 每个信标包含关于其他节点要传送信标的顺序的信息和当各种节点要访问网络时的无线介质访问信息。 在不同的“扩展邻域”中的节点被允许同时发送它们的信标而不会发生信标冲突的风险。 信标包含用于确保此结果的信息。 使用分布式信标机制,每个节点可以预留对无线介质的访问。 在所公开的实施例中,不需要中央协调器。
    • 38. 发明授权
    • Centralized contention and reservation request for QoS-driven wireless LANs
    • QoS驱动无线局域网的集中竞争和预留请求
    • US07639657B1
    • 2009-12-29
    • US11333501
    • 2006-01-17
    • Jin-Meng HoWei Lin
    • Jin-Meng HoWei Lin
    • H04Q7/24
    • H04W74/0808H04W28/14H04W28/26H04W74/006H04W74/08H04W84/12
    • A method and a system is disclosed for providing quality of service (QoS)-driven channel access within a basic service set (BSS) in a wireless local area network (WLAN). A contention control (CC) frame is sent from a point coordinator (PC) of the BSS during a contention-free period (CFP) of a superframe that includes the contention-free period (CFP) and a contention period (CP). The CC frame contains information relating to at least one of a priority limit for a next centralized contention interval (CCI), a length of the next CCI, a permission probability associated with the next CCI and information relating to a reservation request (RR) frame successfully received by the PC in a previous CCI. A non-colliding RR frame is then received at the PC in the CCI following the CC frame. The received RR frame is sent from a non-PC station in the BSS when at least one centralized contention opportunity (CCO) is available during the CCI after the CC frame. The RR frame indicates that the non-PC station sending the RR frame has at least one buffered data frame for transmission.
    • 公开了用于在无线局域网(WLAN)中的基本服务集(BSS)内提供服务质量(QoS) - 驱动信道访问的方法和系统。 在包含无竞争周期(CFP)和争用周期(CP)的超帧的无争用时段(CFP)期间,从BSS的点协调器(PC)发送争用控制(CC)帧。 CC帧包含与下一个集中式争用间隔(CCI)的优先级限制,下一个CCI的长度,与下一个CCI相关联的许可概率以及与预留请求(RR)帧有关的信息中的至少一个的信息 PC在以前的CCI中成功接收。 然后在CC帧之后的CCI处,在PC处接收非冲突的RR帧。 当在CC帧之后的CCI期间至少有一个集中式竞争机会(CCO)可用时,接收到的RR帧从BSS中的非PC站发送。 RR帧指示发送RR帧的非PC站具有至少一个用于传输的缓冲数据帧。
    • 39. 发明申请
    • METHOD AND APPARATUS FOR CONTROLLING ACCESS TO A COMMUNICATION CHANNEL
    • 用于控制通信通道访问的方法和装置
    • US20090092155A1
    • 2009-04-09
    • US12267258
    • 2008-11-07
    • Herman CHIENJin-Meng HoLiang A. HongElliott HooleKin K. Leung
    • Herman CHIENJin-Meng HoLiang A. HongElliott HooleKin K. Leung
    • H04J3/00
    • H04W74/0816H04W74/002H04W74/0833
    • A method and an apparatus provide for controlled access to a shared communication medium. Time slots on a forward channel include information regarding status useful for remote units to determine whether a reverse channel is available for seizure. Additionally, information along the forward channel provides guidance to the remote units to control attempts to seize the reverse channel. In one embodiment a remote unit divides a data package into a plurality of portions and attempts to seize the reverse channel using a single portion of the data package which corresponds to one time slot on the reverse channel. It then waits until it receives notification along the forward channel that the first data portion was successfully received before it attempts to send any of the remainder of its data in consecutive time slots on the reverse channel.
    • 方法和装置提供对共享通信介质的受控访问。 前向信道上的时隙包括关于用于远程单元确定反向信道是否可用于发作的状态的信息。 此外,沿着前向信道的信息为远程单元提供指导以控制占用反向信道的尝试。 在一个实施例中,远程单元将数据包分成多个部分,并尝试使用对应于反向信道上的一个时隙的数据包的单个部分来占用反向信道。 然后它等待直到它在前向信道上接收到第一数据部分被成功接收到的通知,然后它尝试在反向信道上的连续时隙中发送其数据的其余部分。
    • 40. 发明授权
    • Wireless personal area networks with rotation of frequency hopping sequences
    • 具有跳频序列旋转的无线个域网
    • US07474686B2
    • 2009-01-06
    • US10734316
    • 2003-12-12
    • Jin-Meng Ho
    • Jin-Meng Ho
    • H04B1/00
    • H04W48/08H04B1/715H04B2001/7154H04L5/023H04W84/12H04W84/18
    • Wireless personal area networks with frequency hopping and rotation of the frequency hopping sequences. In one embodiment, a method of wireless communication is provided, the method including: transmitting a beacon frame by a piconet coordinator that specifies a rotation index and hopping index; receiving a beacon frame by a device associated with or to be associated with the piconet coordinator; extracting the rotation index and hopping index by the MAC of the recipient device and communicating them to the PHY for transmission and reception in a current superframe; missing a subsequent beacon frame by a recipient device; and using the rotation index and hopping index previously received to determine a current frequency hopping sequence for a current superframe following the missed beacon frame.
    • 无线个域网具有跳频和跳频序列的旋转。 在一个实施例中,提供了一种无线通信的方法,所述方法包括:通过指定旋转指数和跳频指数的微微网协调器发送信标帧; 通过与微微网协调器相关联或与之相关联的设备接收信标帧; 通过接收方设备的MAC提取旋转指标和跳跃指数,并将其传送到PHY,以便在当前超帧中进行发送和接收; 由接收设备丢失后续的信标帧; 并且使用先前接收到的旋转索引和跳频索引来确定在错过的信标帧之后的当前超帧的当前跳频序列。