Method and apparatus for controlling transmission power in a communication system
    112.
    发明授权
    Method and apparatus for controlling transmission power in a communication system 失效
    一种用于在通信系统中的传输功率控制方法和装置

    公开(公告)号:EP0978170B1

    公开(公告)日:2007-03-14

    申请号:EP98917971.8

    申请日:1998-04-16

    IPC分类号: H04B7/005

    摘要: A forward link power control mechanism in a remote station (6) measures reverse link power control bits which are transmitted by one or more base stations (4a, 4b, 4n) on a forward traffic channel (10a). At the remote station (6) the reverse link power control bits from multiple base stations (4a, 4b, 4n) or multiple signal paths are measured, combined, and filtered to yield an improved measurement of the forward link signal quality. The reverse link (12a, 12b) power control bits which are deemed unreliable are omitted from use in the power control loop. The remote station (6) generates a set of forward link power control bits in accordance with the measurements and transmits these bits to all base stations (4a, 4b, 4n) in communication with the remote station (6). Each base station (4a, 4b, 4n) adjusts its gain of the forward traffic channel (10a) in accordance to its measurement of the forward link power control bit. The gains of the forward traffic channels (10a) of the base stations (4a, 4b, 4n) are corrected periodically so that erroneous reception of the forward link power control bits by the base stations do not accumulate.

    METHOD AND APPARATUS FOR TIME EFFICIENT RETRANSMISSION USING SYMBOL ACCUMULATION
    113.
    发明授权
    METHOD AND APPARATUS FOR TIME EFFICIENT RETRANSMISSION USING SYMBOL ACCUMULATION 有权
    VERFAHREN UND VORRICHTUNG ZUR EFFIZIENTENWIEDERÜBERTRAGUNGMITTELS SYMBOLAKKULULATION

    公开(公告)号:EP1033005B1

    公开(公告)日:2006-08-02

    申请号:EP98957886.9

    申请日:1998-11-12

    IPC分类号: H04L1/18

    摘要: In a method for efficient retransmission of data, symbol accumulation is used to retransmit a packet received in error at a lower energy-per-bit level concurrently in the same frame with a new packet. The destination device receives the data transmission and retransmission, demodulates the signal, and separates the received data into the new and retransmitted packet. The destination device then accumulates the energy of the retransmitted packet with the energy already accumulated for the packet received in error and decodes the accumulated packet. The accumulation of the additional energy provided by the subsequent retransmissions improves the probability of a correct decoding. The throughput rate can be improved since the packet received in error is retransmitted concurrently with the transmission of the new data packet. The capacity is maximized since the retransmission of the packet received in error is at a lower energy level than that of the new packet. The method includes puncturing the code symbols of a data packet for transmission in accordance with a first puncturing pattern. If decoding of the punctured transmitted packet of data is unsuccessful, a negative acknowledgement is received at the source device and the code symbols of the data packet are then punctured in accordance with a second pattern for transmission in response to the receipt of the negative acknowledgement.

    摘要翻译: 在用于有效重发数据的方法中,使用符号累加来以与新分组相同的帧同时以较低的每比特能级重传错误接收的分组。 目的设备接收数据传输和重传,对信号进行解调,并将接收到的数据分离成新的和重发的分组。 然后目的地设备以错误地接收到的分组已经累积的能量累积重传的分组的能量,并对累积的分组进行解码。 由后续重传提供的附加能量的累积提高了正确解码的概率。 可以提高吞吐率,因为与新数据分组的传输同时重发错误接收的分组。 容量被最大化,因为错误接收的分组的重传处于比新分组更低的能级。 该方法包括根据第一穿孔模式对用于传输的数据分组的代码符号进行删截。 如果对穿孔的所发送的数据分组的解码不成功,则在源设备处接收到否定的确认,并且响应于接收到否定确认,根据用于发送的第二模式,对数据分组的代码符号进行穿孔。

    REVERSE LINK CHANNEL ARCHITECTURE FOR A WIRELESS COMMUNICATION SYSTEM
    115.
    发明公开
    REVERSE LINK CHANNEL ARCHITECTURE FOR A WIRELESS COMMUNICATION SYSTEM 有权
    反向链接通道架构在无线通信系统

    公开(公告)号:EP1436910A2

    公开(公告)日:2004-07-14

    申请号:EP02724979.6

    申请日:2002-02-14

    IPC分类号: H04B7/005 H04Q7/38

    摘要: A channel structure and mechanisms that support effective and efficient allocation and utilization of the reverse link resources. In one aspect, mechanisms are provided to quickly assign resources (e.g., a supplemental channel) as needed, and to quickly de-assign the resources when not needed or to maintain system stability. The reverse link resources may be quickly assigned and de-assigned via short messages (412, 418) exchanged on control channels on the forward and reverse links. In another aspect, mechanisms are provided to facilitate efficient and reliable data transmission. A reliable acknowledgment/negative acknowledgment scheme and an efficient retransmission scheme are provided. Mechanisms are also provided to control the transmit power and/or data rate of the remote terminals to achieve high performance and avoid instability.

    PAGE MONITORING METHOD AND APPARATUS
    119.
    发明公开
    PAGE MONITORING METHOD AND APPARATUS 审中-公开
    PAGE监测方法和设备

    公开(公告)号:EP1303921A1

    公开(公告)日:2003-04-23

    申请号:EP01954781.9

    申请日:2001-07-17

    IPC分类号: H04B1/707 H04B7/02 H04Q7/38

    摘要: A novel and improved method for performing paging is described. In one embodiment of the invention a searcher (206) is used to detect spread spectrum signals. The searcher (206) searches several pilot channels associated with several base stations. A controller (210) selects at least two base stations that have associated pilot signal (501-02) energies exceeding a threshold (510). A demodulator (208) demodulates for paging channels transmitted by the at least two base stations. The paging channels are transmitted over substantially overlapping time slots. A combiner (212) combines a result of the demodulation generated by demodulating each of the paging channels.

    摘要翻译: 描述了用于执行寻呼的新颖且改进的方法。 在本发明的一个实施例中,搜索器(206)被用于检测扩频信号。 搜索器(206)搜索与几个基站相关的几个导频信道。 控制器(210)选择具有超过阈值(510)的相关导频信号(501-02)能量的至少两个基站。 解调器(208)解调由至少两个基站发送的寻呼信道。 寻呼信道在基本重叠的时隙上传输。 组合器(212)组合通过解调每个寻呼信道而产生的解调结果。

    METHOD AND APPARATUS FOR TRANSMISSION RATE MODIFICATION OF COMMUNICATION CHANNELS
    120.
    发明公开
    METHOD AND APPARATUS FOR TRANSMISSION RATE MODIFICATION OF COMMUNICATION CHANNELS 有权
    方法和装置进行修改通信信道的传输速率

    公开(公告)号:EP1282993A1

    公开(公告)日:2003-02-12

    申请号:EP00936058.7

    申请日:2000-05-17

    IPC分类号: H04Q7/38

    摘要: Access to a variable rate multiple access system is controlled based upon a current loading. The current loading level is used to determine a transmission rate set point. The transmission rate set point may include a maximum transmission rate and a transmission probability. The transmission rate set point is passed to the remote unit (100) which may access the system. A remote unit (100) with data to send determines a desired transmission data rate (106). If the desire transmission data rate is equal to or greater than the maximum transmission data rate, the remote unit (100) transmits at the maximum transmission data rate with a probability equal to the transmission probability.