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    • 1. 发明授权
    • Mechanism to update a NAV timer
    • 更新NAV定时器的机制
    • US08619808B2
    • 2013-12-31
    • US13231668
    • 2011-09-13
    • Liwen ChuGeorge A. Vlantis
    • Liwen ChuGeorge A. Vlantis
    • H04L12/43H04J3/02
    • H04W74/08H04W8/26H04W28/26H04W48/16
    • In a 60 Hz WGA wireless network, not all frames with the duration field are received by a STA in a WGA network because of directional antennas. Therefore, a NAV Timer cannot account for the reserved duration of the channel by only updating with the longest duration field received. A STA can receive two frames each with a source and destination addresses and update the NAV Timer by comparing the received addresses to overcome such problem. Further, a STA can receive one frame with a source and destination addresses and update the NAV Timer by comparing the received addresses with the NAVSRC and NAVDST values.
    • 在60Hz WGA无线网络中,由于定向天线,WGA网络中STA不会收到持续时间字段的所有帧。 因此,NAV定时器不能仅通过接收到的最长持续时间字段来更新信道的保留持续时间。 STA可以接收两个帧,每个帧具有源和目的地址,并通过比较接收到的地址来更新NAV定时器,以克服这种问题。 此外,STA可以接收具有源和目的地地址的一帧,并通过将接收到的地址与NAVSRC和NAVDST值进行比较来更新NAV定时器。
    • 2. 发明申请
    • VHT TXOP POWER SAVE
    • VHT TXOP省电
    • US20130176921A1
    • 2013-07-11
    • US13344351
    • 2012-01-05
    • Liwen ChuGeorge A. Vlantis
    • Liwen ChuGeorge A. Vlantis
    • H04W52/02
    • H04W52/0225H04W52/0206Y02D70/00
    • A wireless, specifically VHT, system that includes APs and STAs can power save during the TXOP. The AP in the system announces whether STAs in the system do SU or MU TXOP power save in a Beacon/Probe Response, and the STAs in the system transmit to the AP whether the STA is capable and willing to save power during a SU, MU, or SU+MU TXOP. For the AP, the process further involves buffering data frames for STAs that have entered doze mode until the end of TXOP. The AP further transmits to STAs a duration of TXOP in the Duration field of a RTS frame. The STA can inform the AP to enter TXOP PM mode in a bit in the HT Control field.
    • 包括AP和STA的无线,特别是VHT系统可以在TXOP期间节电。 系统中的AP宣布系统中的STA是否在信标/探测响应中执行SU或MU TXOP功率保存,并且系统中的STA向AP发送STA是否能够并且愿意在SU,MU期间节省功率 ,或SU + MU TXOP。 对于AP,该过程还涉及缓冲已经进入打盹模式的STA的数据帧,直到TXOP结束。 AP在RTS帧的持续时间字段中进一步向STA发送TXOP的持续时间。 STA可以通知AP在HT控制字段中的一位中进入TXOP PM模式。
    • 5. 发明授权
    • Tunneled direct link setup collision resolution in a wireless local area network
    • 在无线局域网中隧道化的直接链路建立冲突解决
    • US07961693B2
    • 2011-06-14
    • US12403707
    • 2009-03-13
    • Liwen ChuGeorge A. Vlantis
    • Liwen ChuGeorge A. Vlantis
    • H04W4/00
    • H04W74/0841H04W74/0875H04W76/12H04W84/12
    • Collisions between tunneled direct link setup (“TDLS”) requests are resolved by associating each request with a priority value. Upon issuing a TDLS request the encapsulated frame is associated with a priority value. When a station, which is waiting for a response from a recently issued TDLS request, receives a TDLS request from another station, a collision occurs. The collision is resolved by comparing the priority value associated with the TDLS request initiated by the station and the TDLS request received. The TDLS request with the higher priority value is pursued while the TDLS request with the lower priority value is ignored. The priority value can be based on the sending station's MAC address or other value which can differentiate the TDLS requests.
    • 通过将每个请求与优先级值相关联来解决隧道直接链接建立(“TDLS”)请求之间的冲突。 在发出TDLS请求时,封装帧与优先级值相关联。 当等待来自最近发布的TDLS请求的响应的站从另一个站接收到TDLS请求时,发生冲突。 通过比较与由站发起的TDLS请求和接收的TDLS请求相关联的优先级值来解决冲突。 追求具有较高优先级值的TDLS请求被忽略,而具有较低优先级值的TDLS请求被忽略。 优先级值可以基于发送站的MAC地址或可以区分TDLS请求的其他值。
    • 7. 发明授权
    • Method, system, and devices for fast session transfer of wireless devices from one frequency band to another
    • 无线设备从一个频带到另一个频段的快速会话传输的方法,系统和设备
    • US08908862B2
    • 2014-12-09
    • US13448260
    • 2012-04-16
    • Liwen ChuGeorge A. Vlantis
    • Liwen ChuGeorge A. Vlantis
    • H04L9/00
    • H04K1/003H04W36/0033H04W76/22H04W84/12
    • Embodiments are directed to switching of stations STA, access points APs and PCPs that are communicating through a wireless link from one frequency band to another. One embodiment is directed to switching of stations STA that are communicating through a tunneled direct link setup (TDLS) link from one frequency band to another. A multiband element may be added to a TDLS discovery request and TDLS discovery response frames to allow each of the stations communications through a TDLS to determine if the other station has multiband capability. In one embodiment, a pairwise transient key (PTK) is created for both a current band in which the stations STA are communicating and a new band over which the stations may communicate in the future. In this way there is no need to calculate a new pairwise transient key PTK for the new frequency band.
    • 实施例涉及通过无线链路从一个频带到另一个频带进行通信的站STA,接入点AP和PCP的切换。 一个实施例涉及通过隧道直接链路建立(TDLS)链路从一个频带到另一个频带进行通信的站STA的切换。 可以将多频段元素添加到TDLS发现请求和TDLS发现响应帧,以允许每个站通过TDLS进行通信以确定另一站是否具有多频带能力。 在一个实施例中,为站STA正在通信的当前频带和将来可以在其上通信的新频带两者创建成对瞬态密钥(PTK)。 以这种方式,不需要为新的频带计算新的成对瞬态键PTK。
    • 9. 发明申请
    • SP/CBP SCHEDULE INFORMATION DISTRIBUTION
    • SP / CBP时间表信息分配
    • US20120315943A1
    • 2012-12-13
    • US13154972
    • 2011-06-07
    • Liwen ChuGeorge A. Vlantis
    • Liwen ChuGeorge A. Vlantis
    • H04W72/04H04W74/00
    • H04W74/0866
    • The distribution of the service period (SP) and contention-based period (CBP) scheduling information in the data transfer time (DTT) of a beacon interval (BI) defined under the WGA Draft Specification 0.8 is selectively scheduled to optimize channel access contention. STAs in a single antenna scope or groups of STAs in multiple antennas scopes is allocated to different CBPs to decrease collisions. Simultaneous CBPs is further allocated to STAs in multiple antennas scopes where STAs have peer-to-peer traffic with other STAs in the same antenna group during part of the CBP when the personal PCP/AP is unavailable to that antenna group resulting in an increase in network throughput.
    • 选择性地调度在WGA草案规范0.8下定义的信标间隔(BI)的数据传输时间(DTT)中的服务周期(SP)和基于争用的周期(CBP)调度信息的分布,以优化信道访问争用。 在单个天线范围内的STA或多个天线范围内的STA组分配给不同的CBP以减少冲突。 同时CBP被进一步分配给多个天线范围中的STA,其中当个人PCP / AP不可用于该天线组时,STA在部分CBP期间具有与同一天线组中的其他STA的对等业务,从而导致增加 网络吞吐量。