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    • 5. 发明申请
    • APPARATUS AND METHOD FOR EFFICIENTLY SUPPORTING VOIP IN A WIRELESS COMMUNICATION SYSTEM
    • 在无线通信系统中有效支持VOIP的设备和方法
    • WO2006018688B1
    • 2006-04-20
    • PCT/IB2005002329
    • 2005-08-04
    • NOKIA CORPNOKIA INCRONG ZHIGANGMA LINGREER STEVEN CRAIGLIU ZHIGANGPI ZHOUYUE
    • RONG ZHIGANGMA LINGREER STEVEN CRAIGLIU ZHIGANGPI ZHOUYUE
    • G10L19/00H04L12/56
    • H04L65/1069H04L29/06027H04L65/80H04W28/06H04W80/00
    • The present invention concerns methods for efficiently supporting Voice over Internet Protocol (VoIP) on the Forward Packet Data Channel (F PDCH) in CDMA 2000 1xEV-DV systems. Active speech in VoIP is encoded using, for example enhanced variable rate codec (EVRC), which produces 171, 80 and 16 bits per 20 ms of speech for Rate 1, Rate %2 and Rate 1/8, respectively. However, about 60% of the time a user is inactive during a speech session, so an inordinate amount of system bandwidth is comprised of rate 1/8 VoIP packets. In one embodiment of the present invention the apparatus of the present invention identifies the Rate 1/8 voice frame packets and discards them. In another embodiment of the present invention, the apparatus of the present invention identifies the Rate 1/8 voice frame packets and selects some of them for further transmission. In both embodiments the efficiency of channel utilization is increased since the amount of channel band width used to communicate relatively little information, e.g., gaps of silence, is decreased.
    • 本发明涉及在CDMA 2000 1xEV-DV系统中有效支持前向分组数据信道(F PDCH)上的因特网协议语音(VoIP)的方法。 VoIP中的活动语音使用例如增强型可变速率编解码器(EVRC)进行编码,其分别为速率1,速率%2和速率1/8的每20毫秒的语音产生171,80和16位。 然而,在用户在语音会话期间不活动的时间的大约60%,因此系统带宽的过多是由速率1/8的VoIP分组组成的。 在本发明的一个实施例中,本发明的装置识别速率1/8语音帧分组并丢弃它们。 在本发明的另一个实施例中,本发明的装置识别速率1/8的语音帧分组,并选择其中一些用于进一步传输。 在两个实施例中,信道利用的效率增加,因为用于传达相对较少的信息的信道带宽的量,例如,沉默的间隙被减少。
    • 6. 发明申请
    • ADAPTIVE POWER MARGIN ADJUSTMENT FOR A 1xEV-DV SYSTEM
    • 适用于1xEV-DV系统的自适应电源调整
    • WO2004112259A3
    • 2006-07-13
    • PCT/IB2004001852
    • 2004-06-07
    • NOKIA CORPNOKIA INCRONG ZHIGANGMA LIN
    • RONG ZHIGANGMA LIN
    • H04B1/00H04B7/005H04B7/204H04B7/216H04L12/28H04W52/26H04W52/50
    • H04W52/50H04W52/262
    • A method for adaptively adjusting power margin over a forward control channel PDCCH from a base station BS to a mobile station MS during a call. Corresponding message packets are sent in parallel over PDCCH and a data channel PDCH to an MS. The BS monitors a reverse channel ACKCH for an expected reply from the MS. If the reply is ACK, the power margin for the next subsequent transmission on PDCCH is lowered. If the reply is NACK, the power margin for the next subsequent transmission on PDCCH is lowered. If no reply is timely received, the power margin for the next subsequent transmission on PDCCH is raised. If the method is applied also to PDCH, an ACK reply causes the power margin on PDCH to decrease; a NACK reply causes the power margin on PDCH to increase, and no reply leaves the power margin on PDCH unchanged.
    • 一种用于在呼叫期间自适应地调整从基站BS到移动台MS的前向控制信道PDCCH的功率余量的方法。 相应的消息分组通过PDCCH和数据信道PDCH并行发送到MS。 BS监视来自MS的预期回复的反向信道ACKCH。 如果应答为ACK,则PDCCH上下一次后续传输的功率余量降低。 如果应答为NACK,则PDCCH上下一次后续发送的功率余量降低。 如果没有及时收到回复,则增加了下一次在PDCCH上传输的功率余量。 如果该方法也适用于PDCH,则ACK应答使得PDCH上的功率余量减小; NACK应答导致PDCH上的功率余量增加,没有应答使PDCH上的功率余量保持不变。