Modulation division multiple access

    公开(公告)号:US08116412B1

    公开(公告)日:2012-02-14

    申请号:US11942492

    申请日:2007-11-19

    IPC分类号: H03D1/00

    摘要: The present invention employs hierarchical modulation to simultaneously transmit information on different modulation layers using a carrier RF signal. Initially, first data to be transmitted is assigned to a first modulation layer and second data is assigned to a second modulation layer. In one embodiment of the present invention, the first and second data are assigned based on reliability criteria. The first and second modulation layers are hierarchical modulation layers of the carrier RF signal. Once assigned, the first data is transmitted using the first modulation layer of the carrier RF signal and the second data is transmitted using the second modulation layer of the carrier RF signal. In one embodiment of the present invention, information may be transmitted to one end user using one modulation layer, and information may be transmitted to a different end user using a different modulation layer.

    Modulation division multiple access
    2.
    发明授权
    Modulation division multiple access 有权
    调制分多址

    公开(公告)号:US08325857B2

    公开(公告)日:2012-12-04

    申请号:US13349169

    申请日:2012-01-12

    IPC分类号: H03D1/00

    摘要: The present invention employs hierarchical modulation to simultaneously transmit information on different modulation layers using a carrier RF signal. Initially, first data to be transmitted is assigned to a first modulation layer and second data is assigned to a second modulation layer. In one embodiment of the present invention, the first and second data are assigned based on reliability criteria. The first and second modulation layers are hierarchical modulation layers of the carrier RF signal. Once assigned, the first data is transmitted using the first modulation layer of the carrier RF signal and the second data is transmitted using the second modulation layer of the carrier RF signal. In one embodiment of the present invention, information may be transmitted to one end user using one modulation layer, and information may be transmitted to a different end user using a different modulation layer.

    摘要翻译: 本发明采用层次调制,使用载波RF信号同时发送不同调制层上的信息。 首先,要发送的第一数据被分配给第一调制层,并且第二数据被分配给第二调制层。 在本发明的一个实施例中,基于可靠性标准来分配第一和第二数据。 第一和第二调制层是载波RF信号的分层调制层。 一旦被分配,使用载波RF信号的第一调制层发送第一数据,并且使用载波RF信号的第二调制层发送第二数据。 在本发明的一个实施例中,可以使用一个调制层向一个终端用户发送信息,并且可以使用不同的调制层向不同的终端用户发送信息。

    MODULATION DIVISION MULTIPLE ACCESS
    3.
    发明申请
    MODULATION DIVISION MULTIPLE ACCESS 有权
    调制部分多路访问

    公开(公告)号:US20120106410A1

    公开(公告)日:2012-05-03

    申请号:US13349169

    申请日:2012-01-12

    IPC分类号: H04W4/00

    摘要: The present invention employs hierarchical modulation to simultaneously transmit information on different modulation layers using a carrier RF signal. Initially, first data to be transmitted is assigned to a first modulation layer and second data is assigned to a second modulation layer. In one embodiment of the present invention, the first and second data are assigned based on reliability criteria. The first and second modulation layers are hierarchical modulation layers of the carrier RF signal. Once assigned, the first data is transmitted using the first modulation layer of the carrier RF signal and the second data is transmitted using the second modulation layer of the carrier RF signal. In one embodiment of the present invention, information may be transmitted to one end user using one modulation layer, and information may be transmitted to a different end user using a different modulation layer.

    摘要翻译: 本发明采用层次调制,使用载波RF信号同时发送不同调制层上的信息。 首先,要发送的第一数据被分配给第一调制层,并且第二数据被分配给第二调制层。 在本发明的一个实施例中,基于可靠性标准来分配第一和第二数据。 第一和第二调制层是载波RF信号的分层调制层。 一旦被分配,使用载波RF信号的第一调制层发送第一数据,并且使用载波RF信号的第二调制层发送第二数据。 在本发明的一个实施例中,可以使用一个调制层向一个终端用户发送信息,并且可以使用不同的调制层向不同的终端用户发送信息。

    Terrestrial and non-terrestrial communication systems, apparatuses, and methods

    公开(公告)号:US11979220B2

    公开(公告)日:2024-05-07

    申请号:US18115851

    申请日:2023-03-01

    IPC分类号: H04B7/185

    摘要: The present disclosure relates, in part, to non-terrestrial communication systems, and in some embodiments to the integration of terrestrial and non-terrestrial communication systems. Non-terrestrial communication systems can provide a more flexible communication system with extended wireless coverage range and enhanced service quality compared to conventional communication systems. A method representative of aspects of the present application includes receiving, by an apparatus connected in a first sub-system, from a radio access network, configuration information for performing a channel condition measurement on a second sub-system, reporting, by the apparatus to the radio access network, channel condition measurement of a downlink reference signal received from the second sub-system, transmitting, by the apparatus, a wireless transmission to the second sub-system responsive to the channel condition measurement meeting a predefined condition.

    Soft handoff in OFDMA system
    10.
    发明授权
    Soft handoff in OFDMA system 有权
    OFDMA系统中的软切换

    公开(公告)号:US08446879B2

    公开(公告)日:2013-05-21

    申请号:US13551726

    申请日:2012-07-18

    IPC分类号: H04W36/18

    摘要: Soft handoff in an OFDMA system is disclosed. If the pilot signal strength for a base station exceeds the defined threshold, the base station is added to an active set list. Subcarriers in a plurality of orthogonal frequency division multiplexing (OFDM) symbols are divided and allocated into subchannels. The OFDM symbols are divided and multiplexed. A soft handoff zone with a first dimension of the subchannels and a second dimension of the divided and multiplexed OFDM symbols is defined. The soft handoff zone has subcarriers with a subchannel definition, for example, an identical permutation.

    摘要翻译: 披露了OFDMA系统中的软切换。 如果基站的导频信号强度超过定义的阈值,则将基站添加到活动集列表中。 多个正交频分复用(OFDM)符号中的子载波被划分并分配给子信道。 OFDM符号被分割和多路复用。 定义了具有子信道的第一维度和分割和多路复用的OFDM符号的第二维度的软切换区域。 软切换区具有子信道定义的子载波,例如相同的置换。