METHOD AND APPARATUS FOR MINIMISING TOTAL TRANSMISSION ENERGY IN A COMMUNICATION SYSTEM BY USING CHANNEL QUALITY
    51.
    发明授权
    METHOD AND APPARATUS FOR MINIMISING TOTAL TRANSMISSION ENERGY IN A COMMUNICATION SYSTEM BY USING CHANNEL QUALITY 有权
    方法和设备以最小化总能量传输在通信系统中使用的信道质量

    公开(公告)号:EP1219044B1

    公开(公告)日:2010-06-16

    申请号:EP00967333.6

    申请日:2000-10-07

    IPC分类号: H04W52/02 H04L1/18

    摘要: Method and apparatus for transmitting a signal at a predetermined level of reliability using retransmission of erroneously transmitted frames so as to minimize total transmission energy. The transmitting station evaluates the frame error rate (FER) as a function of energy. Next, the transmitting station determines a combination of initial transmission energies and retransmission energies that will provide the target level of reliability while minimizing the total transmission energy employed in the initial transmission and the retransmissions. The transmitting station transmits a frame with an initial transmission energy. Employing conventional feedback methods the transmitting station is alerted to the occurrence of frame errors at the receiving station. The transmitting station upon notification of a frame error retransmits the frame with an energy determined to minimize the total energy required to transmit the frame with a predetermined level of reliability.

    TIME OFFSET TECHNIQUE FOR INCREASING THE CAPACITY OF A CDMA SYSTEM
    55.
    发明授权
    TIME OFFSET TECHNIQUE FOR INCREASING THE CAPACITY OF A CDMA SYSTEM 有权
    ZEIT-OFFSET TECHNIK ZURKAPAZITÄTSERHÖHUNGEINER CDMA系统

    公开(公告)号:EP1105976B1

    公开(公告)日:2007-11-28

    申请号:EP99941226.5

    申请日:1999-08-17

    IPC分类号: H04B1/707 H04B7/005 H04L27/26

    摘要: A method for limiting peak transmit power in a CDMA communication system by transmitting a first communication signal having a first high transmit power region, and transmitting a second communication signal having a second high transmit power region. A first and a second communication signal are time offset to prevent the first and second high transmit power regions from occurring simultaneously. Time shifting only a portion of the first and second communication signals is also taught. The first and second communication signals can also include respective first and second low transmit power regions. The time offset can be selected to align one of the first and second high transmit power regions with one of the first and second low transmit power regions. The total transmit power signal can be determined and the time offset can be selected to minimize a peak level of the total transmit power signal. The communication signals are separated into a plurality of portions and portions of the first and second communication signals are time offset to re-order the sequence of transmission of the plurality of portions.

    摘要翻译: 一种通过发送具有第一高发射功率区域的第一通信信号并发送具有第二高发射功率区域的第二通信信号来限制CDMA通信系统中的峰值发射功率的方法。 第一和第二通信信号是时间偏移,以防止第一和第二高发射功率区域同时发生。 还教导了仅移动第一和第二通信信号的一部分的时移。 第一和第二通信信号还可以包括相应的第一和第二低发射功率区域。 可以选择时间偏移以将第一和第二高发射功率区域中的一个与第一和第二低发射功率区域中的一个对准。 可以确定总发射功率信号并且可以选择时间偏移以使总发射功率信号的峰值电平最小化。 通信信号被分成多个部分,并且第一和第二通信信号的部分被时间偏移以重新排列多个部分的传输顺序。

    METHOD AND APPARATUS FOR MAXIMIZING THE USE OF AVAILABLE CAPACITY IN A COMMUNICATION SYSTEM
    57.
    发明授权
    METHOD AND APPARATUS FOR MAXIMIZING THE USE OF AVAILABLE CAPACITY IN A COMMUNICATION SYSTEM 有权
    方法和设备充分利用现有能力的USE IN的通信系统

    公开(公告)号:EP1159792B1

    公开(公告)日:2006-05-03

    申请号:EP00917754.4

    申请日:2000-03-06

    IPC分类号: H04B7/26 H04Q7/38 H04L1/08

    摘要: A method and apparatus for maximizing the use of available capacity in a communication system having a base station and a plurality of mobile stations. The forward link in the mobile radio system includes a plurality of traffic streams sent on at least one channel from the base station to the mobile stations. The forward link is subject to a maximum power ceiling. A first output power level associated with simultaneously transmitting a first set of one or more traffic streams from the base station to the mobile stations on the forward link is initially determined. Next, the first output power level is compared to the maximum power ceiling. In response to the comparing step, at least one time frame in the forward link having available capacity for transmitting a portion of at least one further traffic stream is identified. The first set of traffic streams and the portion of the at least one further traffic stream are then transmitted simultaneously during the at least one frame on the forward link.