Method and system for medium access control in communication networks
    71.
    发明申请
    Method and system for medium access control in communication networks 有权
    通信网络介质访问控制方法与系统

    公开(公告)号:US20090109938A1

    公开(公告)日:2009-04-30

    申请号:US11981018

    申请日:2007-10-31

    IPC分类号: H04B7/212

    摘要: A method and a system for medium access control among devices in a communication system is provided. One implementation involves selecting a contention-based control period for access to a shared communication medium; dividing the contention-based control period into multiple time slots, wherein each slot has a duration that is a function of one or more of the duration of transmission of a request to send (RTS) frame, the duration of transmission of a clear to send (CTS) frame, and an inter frame space (IFS) duration therebetween; and transmitting an RTS frame in a selected slot for allocating a reservation period for accessing the medium for data transmission.

    摘要翻译: 提供了一种用于通信系统中的设备之间的媒体访问控制的方法和系统。 一个实现涉及选择用于访问共享通信介质的基于竞争的控制周期; 将基于竞争的控制周期划分成多个时隙,其中每个时隙具有作为发送请求(RTS)帧的发送的持续时间中的一个或多个的功能的持续时间,发送的清除持续时间 (CTS)帧,以及帧间间隔(IFS)间隔; 以及在所选择的时隙中发送RTS帧,以分配用于访问用于数据传输的介质的预留时段。

    SYSTEM AND METHOD FOR WIRELESS COMMUNICATION OF UNCOMPRESSED VIDEO USING MODE CHANGES BASED ON CHANNEL FEEDBACK (CF)
    72.
    发明申请
    SYSTEM AND METHOD FOR WIRELESS COMMUNICATION OF UNCOMPRESSED VIDEO USING MODE CHANGES BASED ON CHANNEL FEEDBACK (CF) 有权
    基于频道反馈(CF)的模式变化对无缝视频进行无线通信的系统和方法

    公开(公告)号:US20080253462A1

    公开(公告)日:2008-10-16

    申请号:US11733633

    申请日:2007-04-10

    IPC分类号: H04N7/12

    摘要: Method and system for transmission of uncompressed video information from a sender to a receiver over wireless channels are disclosed. For example, according to one embodiment, when channel conditions (e.g., noise or interference) worsens, one or more least significant bits (LSB) of pixel data are not transmitted to save bandwidth for more efficient transmission. Furthermore, the remaining one or more of the most significant bits (MSB) of the pixel data are transmitted with coding and/or modulation schemes that provides extra error protection, relative to what is needed in regular channel conditions.

    摘要翻译: 公开了一种用于通过无线信道从发送方发送到接收者的未压缩视频信息的方法和系统。 例如,根据一个实施例,当信道条件(例如,噪声或干扰)恶化时,不传输像素数据的一个或多个最低有效位(LSB)以节省用于更有效传输的带宽。 此外,相对于常规信道条件中需要的,通过提供额外的错误保护的编码和/或调制方案来发送像素数据的剩余一个或多个最高有效位(MSB)。

    SYSTEM AND METHOD FOR WIRELESS COMMUNICATION
    73.
    发明申请
    SYSTEM AND METHOD FOR WIRELESS COMMUNICATION 审中-公开
    无线通信系统与方法

    公开(公告)号:US20080130561A1

    公开(公告)日:2008-06-05

    申请号:US11864846

    申请日:2007-09-28

    IPC分类号: H04Q7/00

    CPC分类号: H04L1/1621 H04L1/0061

    摘要: A system and method for wireless communication is disclosed. In one aspect, the method comprises generating a physical (PHY) frame comprising a PRY layer header and a PHY payload data packet, wherein the PHY layer header comprises an aggregation indication bit for indicating whether the PHY payload data packet comprises two or more sub-packets received from the application layer. The method further comprises transmitting the PHY frame.

    摘要翻译: 公开了一种用于无线通信的系统和方法。 在一个方面,该方法包括生成包括PRY层头和PHY有效载荷数据分组的物理(PHY)帧,其中PHY层报头包括用于指示PHY有效载荷数据分组是否包括两个或多个子载波数据分组的聚合指示位, 从应用层收到的数据包。 该方法还包括发送PHY帧。

    METHOD AND APPARATUS OF FIXED SIZE MAC HEADER WITH AN EXTENSION IN WIRELESSHD
    74.
    发明申请
    METHOD AND APPARATUS OF FIXED SIZE MAC HEADER WITH AN EXTENSION IN WIRELESSHD 有权
    固定尺寸MAC头与无线宽带扩展的方法与装置

    公开(公告)号:US20080037540A1

    公开(公告)日:2008-02-14

    申请号:US11690290

    申请日:2007-03-23

    IPC分类号: H04L12/56

    摘要: A data structure of a MAC header for a WirelessHD communication system including an application layer, a media access controller (MAC) layer, and a physical (PHY) layer, includes, a payload data packet from the application layer; a MAC header of a fixed length; a MAC header extension of a variable length; a MAC header extension control field which signals if a particular field needs to be included or excluded; a PHY header for synchronizing the behavior of the PHY layer; a first CRC segment for a cyclic redundancy checksum for checking transmission of the MAC header and the PHY header; and a second CRC segment for a cyclic redundancy checksum for checking transmission of the MAC header extension. Either the MAC header or the MAC header extension includes a size indication of the MAC header extension for facilitating checking of the second CRC segment.

    摘要翻译: 包括应用层,媒体接入控制器(MAC)层和物理(PHY)层的WirelessHD通信系统的MAC报头的数据结构包括来自应用层的有效载荷数据分组; 一个固定长度的MAC头; 可变长度的MAC标头扩展名; MAC报头扩展控制字段,其指示是否需要包括或排除特定字段; 用于同步PHY层的行为的PHY报头; 用于检查MAC报头和PHY报头的传输的循环冗余校验和的第一CRC段; 以及用于检查MAC报头扩展的传输的循环冗余校验和的第二CRC段。 MAC报头或MAC报头扩展包括用于便于检查第二CRC段的MAC报头扩展的大小指示。

    System and method for wireless communication of uncompressed video having acknowledgment (ACK) frames
    75.
    发明申请
    System and method for wireless communication of uncompressed video having acknowledgment (ACK) frames 有权
    具有确认(ACK)帧的未压缩视频的无线通信系统和方法

    公开(公告)号:US20080037466A1

    公开(公告)日:2008-02-14

    申请号:US11726084

    申请日:2007-03-20

    IPC分类号: H04Q7/00

    CPC分类号: H04L1/1822

    摘要: A system and method for wireless communication of uncompressed video data are disclosed. One embodiment of the system includes a wireless communication device. The device includes a receiver configured to receive a data packet, and a transmitter configured to send an acknowledgment (ACK) signal upon receiving a data packet. The ACK signal includes a physical layer preamble, a physical layer header including a plurality of bits indicative of the status of the data packet, and a cyclic redundancy check (CRC) field. The ACK signal optionally includes a payload field containing beam-tracking data.

    摘要翻译: 公开了一种用于无压缩视频数据的无线通信的系统和方法。 该系统的一个实施例包括无线通信设备。 该设备包括被配置为接收数据分组的接收机,以及被配置为在接收到数据分组时发送确认(ACK)信号的发射机。 ACK信号包括物理层前导码,包括指示数据分组的状态的多个比特的物理层报头,以及循环冗余校验(CRC)字段。 ACK信号可选地包括包含波束跟踪数据的有效载荷字段。

    System and method for wireless communication of uncompressed video having acknowledgement (ACK) frames
    76.
    发明申请
    System and method for wireless communication of uncompressed video having acknowledgement (ACK) frames 有权
    具有确认(ACK)帧的未压缩视频的无线通信系统和方法

    公开(公告)号:US20080037465A1

    公开(公告)日:2008-02-14

    申请号:US11726056

    申请日:2007-03-20

    IPC分类号: H04Q7/00

    摘要: A wireless communication system and method for wireless communication are disclosed. One embodiment of the system includes a wireless communication device. The device includes a receiver configured to receive a data packet via a channel. The device further includes a transmitter configured to send an acknowledgment (ACK) signal via a low-rate channel upon receiving the data packet. The low-rate channel has a directional mode and an omni-directional mode. The acknowledgment signal includes a low-rate physical layer (LRP) preamble and an acknowledgment (ACK) header including a mode index field. The mode index field includes a plurality of bits indicative of whether the ACK signal is transmitted using the directional mode or the omni-directional mode.

    摘要翻译: 公开了一种用于无线通信的无线通信系统和方法。 该系统的一个实施例包括无线通信设备。 该设备包括被配置为经由信道接收数据分组的接收机。 该设备还包括发射机,其被配置为在接收到数据分组时经由低速率信道发送确认(ACK)信号。 低速率信道具有定向模式和全向模式。 确认信号包括低速率物理层(LRP)前导码和包括模式索引字段的确认(ACK)报头。 模式索引字段包括表示使用定向模式或全向模式来发送ACK信号的多个比特。

    Method and system for establishing a channel for a wireless video area network
    77.
    发明申请
    Method and system for establishing a channel for a wireless video area network 有权
    用于建立无线视频区域网络的信道的方法和系统

    公开(公告)号:US20070270121A1

    公开(公告)日:2007-11-22

    申请号:US11801611

    申请日:2007-05-10

    IPC分类号: H04Q7/20

    摘要: A method and system for establishing a channel in a wireless video area network, is provided. Establishing a channel involves scanning available high-rate and low-rate channels, selecting a channel from the available channels with minimal interference with other networks, determining if the selected channel remains available for a listening period, and if the selected channel remains available, then starting communication on the selected channel. The selected channel is a high-rate channel and a corresponding low-rate channel.

    摘要翻译: 提供了一种在无线视频区域网络中建立信道的方法和系统。 建立频道包括扫描可用的高速率和低速率信道,从可用信道中选择一个信道,对其他网络的干扰最小,确定所选信道是否在监听期间保持可用,如果所选信道保持可用,则 在所选频道上启动通讯。 选择的信道是高速率信道和相应的低速率信道。

    Method and system for partitioning and encoding of uncompressed video for transmission over wireless medium
    79.
    发明申请
    Method and system for partitioning and encoding of uncompressed video for transmission over wireless medium 失效
    用于通过无线介质传输的未压缩视频的分割和编码方法和系统

    公开(公告)号:US20070202842A1

    公开(公告)日:2007-08-30

    申请号:US11598920

    申请日:2006-11-13

    IPC分类号: H04Q7/20

    CPC分类号: H04N19/89

    摘要: A method and system for transmitting uncompressed video over a wireless channel by inputting a frame of pixel information, partitioning spatially correlated pixels into different packets, and transmitting the packets separately over a wireless channel. For robust transmission, error detection data can be generated for each packet and appended to each packet before transmission. A receiver receives the transmitted packets and checks if a received packet is corrupt based on the appended error detection data. For a corrupt packet, the receiver corrects the corrupt pixels using pixel information in other received packets containing neighboring pixels to recover each corrupt pixel in the corrupt packet.

    摘要翻译: 一种方法和系统,用于通过输入像素信息的帧,通过无线信道发送未压缩的视频,将空间相关的像素划分成不同的分组,以及通过无线信道分别发送分组。 对于鲁棒传输,可以为每个分组生成错误检测数据,并在传输之前附加到每个分组。 接收器接收所发送的分组,并根据所附的错误检测数据来检查接收的分组是否损坏。 对于损坏的数据包,接收器使用包含相邻像素的其他接收数据包中的像素信息来校正损坏的像素,以恢复损坏的数据包中的每个损坏的像素。

    Method and system for medium access control in communication networks
    80.
    发明授权
    Method and system for medium access control in communication networks 有权
    通信网络介质访问控制方法与系统

    公开(公告)号:US08837435B2

    公开(公告)日:2014-09-16

    申请号:US11981018

    申请日:2007-10-31

    摘要: A method and a system for medium access control among devices in a communication system is provided. One implementation involves selecting a contention-based control period for access to a shared communication medium; dividing the contention-based control period into multiple time slots, wherein each slot has a duration that is a function of one or more of the duration of transmission of a request to send (RTS) frame, the duration of transmission of a clear to send (CTS) frame, and an inter frame space (IFS) duration therebetween; and transmitting an RTS frame in a selected slot for allocating a reservation period for accessing the medium for data transmission.

    摘要翻译: 提供了一种用于通信系统中的设备之间的媒体访问控制的方法和系统。 一个实现涉及选择用于访问共享通信介质的基于竞争的控制周期; 将基于竞争的控制周期划分成多个时隙,其中每个时隙具有作为发送请求(RTS)帧的发送的持续时间中的一个或多个的功能的持续时间,发送的清除持续时间 (CTS)帧,以及帧间间隔(IFS)的间隔; 以及在所选择的时隙中发送RTS帧,以分配用于访问用于数据传输的介质的预留时段。