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    • 101. 发明授权
    • Method and system for power save multi-poll (PSMP) communication in wireless systems
    • 无线系统中节能多轮询(PSMP)通信的方法和系统
    • US07869390B2
    • 2011-01-11
    • US11598977
    • 2006-11-13
    • Harkirat SinghChiu Ngo
    • Harkirat SinghChiu Ngo
    • G08C17/00
    • H04W74/04H04W72/1289Y02D70/142Y02D70/23
    • The present invention provides a method and a system for PSMP communication in a wireless communication system such as an IEEE 802.11n WLAN including an AP and multiple STAs. An example of such a PSMP communication involves transmitting a PSMP frame from the AP to the STAs over a wireless channel, detecting if the channel is idle for certain duration, and if the channel is idle for said certain duration, then performing a PSMP recovery process. The PSMP frame includes one or more STA info fields which specify schedules of periods for communication over the wireless channel in a PSMP sequence. In performing a PSMP recovery process, the AP constructs and broadcasts a PSMP recovery frame that allows STAs that missed the original PSMP frame to join the PSMP sequence.
    • 本发明提供了一种在诸如包括AP和多个STA的IEEE 802.11n WLAN的无线通信系统中进行PSMP通信的方法和系统。 这样的PSMP通信的一个例子涉及通过无线信道将APMP帧从AP发送到STA,检测该信道是否在某一持续时间内空闲,并且如果该信道在所述特定持续时间内空闲,则执行PSMP恢复过程 。 PSMP帧包括一个或多个STA信息字段,其指定在PSMP序列中通过无线信道进行通信的周期的调度。 在执行PSMP恢复过程中,AP构造并广播允许缺少原始PSMP帧的STA加入PSMP序列的PSMP恢复帧。
    • 102. 发明申请
    • SYSTEM AND METHOD FOR ESTABLISHING A DIRECT LINK ON THE HIGH THROUGHPUT CHANNEL OF A MULTI-RATE CHANNEL WIRELESS COMMUNICATIONS NETWORK
    • 在多通道无线通信网络的高速通道上建立直连链路的系统和方法
    • US20100014458A1
    • 2010-01-21
    • US12482328
    • 2009-06-10
    • Harkirat SinghXiangping QinChiu Ngo
    • Harkirat SinghXiangping QinChiu Ngo
    • H04W4/00H04L27/00
    • H04W72/048
    • A system and method for wireless communication over multi-rate channels are disclosed. One embodiment of the system includes a first wireless device; a second wireless device; and an access point that can communicate over high-rate and low-rate channels. One or more of the first and second wireless devices and the access point can include neighbor information on the wireless stations in the wireless network. One or more of the first and second wireless devices and the access point may be configured to transmit a frame in an attempt to establish a direct link over the first channel between the first and second stations. Before transmitting the frame, the one or more of the first and second wireless devices and the access point may determine whether a direct link can be established over the first channel between the first and second stations, based at least partly on the neighbor information. This scheme can significantly reduce time wasted for unsuccessful direct link setup attempts for the high-rate channel transmissions.
    • 公开了一种用于通过多速率信道进行无线通信的系统和方法。 该系统的一个实施例包括第一无线设备; 第二无线设备; 以及可以通过高速率和低速率通道进行通信的接入点。 第一和第二无线设备和接入点中的一个或多个可以包括无线网络中的无线站上的邻居信息。 第一和第二无线设备和接入点中的一个或多个可以被配置为发送帧以尝试在第一和第二站之间的第一信道上建立直接链路。 在发送帧之前,至少部分地基于邻居信息,第一和第二无线设备和接入点中的一个或多个可以确定是否可以在第一和第二站之间的第一信道上建立直接链路。 该方案可以显着地减少用于高速率信道传输的直接链路建立尝试失败的时间。
    • 104. 发明申请
    • Method and system for data packet communication in wireless communication systems
    • 无线通信系统中数据包通信的方法和系统
    • US20090059949A1
    • 2009-03-05
    • US11897063
    • 2007-08-29
    • Harkirat SinghChiu Ngo
    • Harkirat SinghChiu Ngo
    • H04L12/413
    • H04W72/1221
    • The present invention provides a method and system for data packet communication in wireless communication systems. One embodiment involves determining if one or more data blocks pending transmission in a current transmission opportunity period over the channel will expire before the start of another transmission opportunity period, and if a data block will expire before the start of another transmission opportunity period, then extending the current transmission opportunity period by an extension period for transmitting the expiring data block during the extension period. One or more expiring packets are transmitted during the extension period on a best-effort basis.
    • 本发明提供了一种用于无线通信系统中的数据分组通信的方法和系统。 一个实施例涉及确定在当前传输机会期间待传输的一个或多个数据块是否将在另一个传输机会周期的开始之前到期,并且如果数据块将在另一传输机会周期开始之前到期,则扩展 当前传输机会期间延长期限,用于在延长期间内发送到期数据块。 一个或多个到期数据包是在尽力而为的扩展期内发送的。
    • 105. 发明申请
    • SYSTEM AND METHOD FOR MAINTAINING RELIABLE BEACON TRANSMISSION AND RECEPTION IN A WIRELESS COMMUNICATION NETWORK
    • 在无线通信网络中维护可靠的信标传输和接收的系统和方法
    • US20090054054A1
    • 2009-02-26
    • US12189714
    • 2008-08-11
    • Huai-Rong ShaoHarkirat SinghXiangping QinChiu Ngo
    • Huai-Rong ShaoHarkirat SinghXiangping QinChiu Ngo
    • H04B7/24
    • H04W72/085H04B17/309H04W48/08H04W72/046
    • Systems and methods for maintaining reliable beacon transmission and reception in a wireless communication network are disclosed herein. In one embodiment, there is a method of communicating in a wireless communication network comprising a first device and a second device, the method comprising selecting, by the first device, a wireless communication direction for communication of data, wherein the wireless communication direction comprises at least one of a reception direction of the first device, a reception direction of the second device, a transmission direction of the first device, or a transmission direction of the second device, associating, by the first device, with the second device in the selected wireless communication direction, receiving, by the first device, a plurality of signals transmitted in different directions by the second device, the plurality of signals comprising a first signal in the selected wireless communication direction and a second signal transmitted in another direction different from the selected wireless communication direction, and determining, by the first device, one or more measures of quality of the first and second signals.
    • 本文公开了用于在无线通信网络中维持可靠信标发送和接收的系统和方法。 在一个实施例中,存在在包括第一设备和第二设备的无线通信网络中通信的方法,所述方法包括由所述第一设备选择用于数据通信的无线通信方向,其中所述无线通信方向包括 第一设备的接收方向,第二设备的接收方向,第一设备的传输方向或第二设备的传输方向中的至少一个,由第一设备与所选择的第二设备中的第二设备相关联 无线通信方向,由所述第一设备接收由所述第二设备在不同方向上发送的多个信号,所述多个信号包括所选择的无线通信方向上的第一信号和沿与所选择的不同方向不同的另一方向发送的第二信号 无线通信方向,以及由所述第一设备确定一个或多个措施 的第一和第二信号的质量。
    • 106. 发明申请
    • SYSTEM AND METHOD FOR MULTIPLE CONTENTION ACCESS PERIODS
    • 多种内容访问期的系统与方法
    • US20090052389A1
    • 2009-02-26
    • US12189534
    • 2008-08-11
    • Xiangping QinHarkirat SinghHuai-Rong ShaoChiu Ngo
    • Xiangping QinHarkirat SinghHuai-Rong ShaoChiu Ngo
    • H04W72/12
    • H04W74/08
    • A system and method for multiple contention access periods is disclosed. In one embodiment, the system for wireless communication comprises a coordinator configured to schedule wireless transmissions among a plurality of wireless devices during a plurality of superframes, at least one of the superframes comprising a period during which the coordinator is configured to receive one or more data packets from the wireless devices via at least one random access scheme, the period being partitioned into a plurality of sub-periods which do not overlap with one another, wherein the coordinator is configured to receive at least a first data packet having a first value for a parameter during a first sub-period and a second data packet having a second value for the parameter during a second sub-period, and wherein the first and second values for the parameter are different from each other.
    • 公开了一种用于多个争用访问时段的系统和方法。 在一个实施例中,用于无线通信的系统包括配置为在多个超帧期间在多个无线设备之间调度无线传输的协调器,所述超帧中的至少一个包括协调器被配置为接收一个或多个数据 经由至少一个随机接入方案来自所述无线设备的分组,所述周期被划分为彼此不重叠的多个子周期,其中所述协调器被配置为接收至少第一数据分组,所述第一数据分组具有第一值, 第一子周期期间的参数和在第二子周期期间具有参数的第二值的第二数据分组,并且其中参数的第一和第二值彼此不同。
    • 108. 发明申请
    • Method and system for acknowledgements in wireless communications
    • 无线通信确认方法和系统
    • US20080212612A1
    • 2008-09-04
    • US11713311
    • 2007-03-01
    • Harkirat SinghChiu Ngo
    • Harkirat SinghChiu Ngo
    • H04L12/56
    • H04L1/1685H04L1/1614H04W28/06
    • A packet communication process for a wireless system that includes a sender and a receiver, is provided. The packet communication process dispenses with the need to send multiple block acknowledgments, one per Traffic Identifier (TID), from the receiver to the sender. This involves aggregating multiple MPDUs having a plurality of different TIDs; for each TID, generating a BAR to request an acknowledgment for one or more MPDUs with that TID from the receiver; transmitting the aggregated MPDUs and the BARs from the sender to the receiver over a wireless channel; receiving the aggregated MPDUs and the BARs at the receiver; in response to the BARs, generating a single block acknowledgement that includes an acknowledgment for each MPDU with a different TID; and transmitting the single block acknowledgement to the sender.
    • 提供了一种用于包括发送器和接收器的无线系统的分组通信过程。 分组通信过程不需要从接收机向发送方发送多个块确认(每个业务标识符(TID)一个)。 这涉及聚合具有多个不同TID的多个MPDU; 对于每个TID,生成BAR以从接收器请求具有该TID的一个或多个MPDU的确认; 通过无线信道将聚合的MPDU和BAR从发送者发送到接收者; 在接收端接收聚合的MPDU和BAR; 响应于所述BAR,生成包括对具有不同TID的每个MPDU的确认的单个块确认; 并将单块确认发送给发送方。
    • 109. 发明申请
    • METHOD AND SYSTEM FOR WIRELESS COMMUNICATION BY SPATIAL REUSE
    • 通过空间重用无线通信的方法和系统
    • US20080175198A1
    • 2008-07-24
    • US12014705
    • 2008-01-15
    • Harkirat SinghHuai-Rong ShaoXiangping QinChiu Ngo
    • Harkirat SinghHuai-Rong ShaoXiangping QinChiu Ngo
    • H04Q7/00
    • H04W28/18
    • Wireless communication between a first transmitter and a first receiver for a new transmission is established on the same wireless data channel used for ongoing transmission between a second transmitter and a second receiver. This is achieved by determining if the second receiver can receive signals from the first transmitter, and determining if the first receiver can receive signals from the second transmitter. If the second receiver cannot receive signals from the first transmitter, and the first receiver cannot receive signals from the second transmitter, then a new transmission is performed from the first transmitter to the first receiver by spatial reuse of the wireless data channel at least partially concurrently with said ongoing transmission on said data channel.
    • 用于新传输的第一发射机和第一接收机之间的无线通信在用于第二发射机和第二接收机之间的正在进行的传输的相同无线数据信道上建立。 这通过确定第二接收机是否可以接收来自第一发射机的信号,以及确定第一接收机是否可以接收来自第二发射机的信号来实现。 如果第二接收机不能从第一发射机接收信号,并且第一接收机不能从第二发射机接收信号,则通过至少部分同时地对无线数据信道进行空间重用,从第一发射机到第一接收机执行新的传输 所述正在进行的传输在所述数据信道上。