公开(公告)号：US20070183303A1

公开(公告)日：2007-08-09

申请号：US11442639

申请日：2006-05-26

申请人： Zhouyue Pi ,  Fei Zhou ,  Zhigang Rong ,  Lin Ma

发明人： Zhouyue Pi ,  Fei Zhou ,  Zhigang Rong ,  Lin Ma

IPC分类号： H04J11/00

CPC分类号： H04L1/0026 ,  H04L1/0002 ,  H04L1/0029 ,  H04L1/0041 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0085 ,  H04L5/0096

摘要： An approach is provided for specifying channel state information in a multi-carrier communication system. A determination of either spectral locations of a first carrier and a second carrier, or correlation between the first carrier and the second carrier is made. A report format among a plurality of report formats is selected based on either the determined correlation or spectral locations. Each of the report formats specifies channel state information for the first carrier and the second carrier. The channel state information includes data rate information.

摘要翻译： 提供了一种用于在多载波通信系统中指定信道状态信息的方法。 确定第一载波和第二载波的频谱位置，或第一载波和第二载波之间的相关性。 基于确定的相关性或光谱位置来选择多种报告格式之间的报告格式。 每个报告格式指定第一载波和第二载波的信道状态信息。 信道状态信息包括数据速率信息。

公开(公告)号：US20060034340A1

公开(公告)日：2006-02-16

申请号：US10918542

申请日：2004-08-12

申请人： Zhigang Rong ,  Lin Ma ,  Steven Greer ,  Zhigang Liu ,  Zhouyue Pi

发明人： Zhigang Rong ,  Lin Ma ,  Steven Greer ,  Zhigang Liu ,  Zhouyue Pi

IPC分类号： H04J3/10

CPC分类号： H04L65/1069 ,  H04L29/06027 ,  H04L65/80 ,  H04W28/06 ,  H04W80/00

摘要： 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 1/2 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.

摘要翻译： 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1/2和速率1/8的每20毫秒的语音产生171,80和16比特。 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，并选择其中的一些进一步传输。 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。

公开(公告)号：US06587696B1

公开(公告)日：2003-07-01

申请号：US09363583

申请日：1999-07-29

申请人： Lin Ma ,  Zhigang Rong

发明人： Lin Ma ,  Zhigang Rong

IPC分类号： H04Q700

CPC分类号： H04W52/143 ,  H04W24/10 ,  H04W48/08 ,  H04W52/08 ,  H04W52/12 ,  H04W52/243 ,  H04W52/50

摘要： A method and system for providing efficient transmission power control commands to a base station. In a third generation IS-95 CDMA network, for example, cdma2000, the forward pilot channel is used to estimate the received signal power level. In the presently preferred embodiment, a mobile station measures the received pilot channel power, on a forward link pilot channel. The loss experienced on the pilot channel is estimated as the difference between the pilot channel power transmitted at the base station and the pilot channel power received at the mobile station. The pilot power transmission power is typically fixed based upon the operating environment of the base station. The fixed pilot channel transmission power can be transmitted via a message from the base station. Based on the estimated channel loss, the received traffic power is calculated as the difference between the initial traffic channel transmission power, that is, the power when the mobile station is assigned a traffic channel, and the estimated loss added to any power control gain corrections that have occurred. The initial traffic channel transmission power can be a default value or can be assigned by the base station using signaling messages, e.g., a forward common control channel (or F-CCCH) message. Power control decisions are made based on the ratio of received traffic channel energy with an estimate of interference and noise on the channel. A “power control decision” is made by comparing the ratio with a predetermined threshold to determine if the power level should be raised or lowered.

摘要翻译： 一种用于向基站提供有效的发射功率控制命令的方法和系统。 在第三代IS-95 CDMA网络中，例如cdma2000，使用前向导频信道来估计接收信号功率电平。 在当前的优选实施例中，移动台在前向链路导频信道上测量所接收的导频信道功率。 在导频信道上经历的损耗被估计为在基站发送的导频信道功率与在移动台处接收到的导频信道功率之间的差。 导频功率传输功率通常基于基站的操作环境而固定。 可以经由来自基站的消息来发送固定的导频信道发送功率。 基于估计的信道损失，接收到的业务功率被计算为初始业务信道发射功率之间的差异，即当移动台被分配业务信道时的功率和添加到任何功率控制增益校正的估计损耗 发生了。 初始业务信道传输功率可以是默认值，或者可以由基站使用信令消息（例如，前向公共控制信道（或F-CCCH）消息）来分配。 功率控制决定是基于接收的业务信道能量与信道上的干扰和噪声估计的比率来进行的。 通过将比率与预定阈值进行比较来确定功率电平是否应该升高或降低来进行“功率控制决定”。