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    • 52. 发明专利
    • Open loop rate control for tdd communication system
    • 用于TDD通信系统的开环速率控制
    • JP2010213291A
    • 2010-09-24
    • JP2010086978
    • 2010-04-05
    • Qualcomm Incクゥアルコム・インコーポレイテッドQualcomm Incorporated
    • WALTON JAY RODNEYSURINENI SHRAVAN KMEYLAN ARNAUDNANDA SANJIV
    • H04W28/18H04J99/00H04W28/06H04W28/22
    • H04L1/0015H04B17/309H04L1/0002H04L1/1607Y02D50/10
    • PROBLEM TO BE SOLVED: To provide techniques for performing open-loop rate control in a TDD communication system. SOLUTION: In the open-loop rate control, the channel quality of a first link (B, A) is estimated based on a transmission received via the first link (B, A). The channel quality of a second link (A, B) is estimated based on the estimated channel quality of the first link (B, A) and an asymmetric parameter. A rate for a data transmission via the second link (A, B) is selected based on the estimated channel quality of the second link (A, B). The estimated channel quality for each link may be given by a set of SNR estimates for a set of transmission channels on that link. The asymmetric parameter may be determined based on (1) the capabilities (e.g., transmission power, receiver noise figure, and number of antennas) of the transmitting and receiving stations or (2) received SNRs for the first link (B, A) and second link (A, B). COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供在TDD通信系统中执行开环速率控制的技术。 解决方案:在开环速率控制中,基于经由第一链路(B,A)接收的传输来估计第一链路(B,A)的信道质量。 基于第一链路(B,A)的估计信道质量和非对称参数来估计第二链路(A,B)的信道质量。 基于第二链路(A,B)的估计信道质量来选择经由第二链路(A,B)进行数据传输的速率。 每个链路的估计信道质量可以由对该链路上的一组传输信道的一组SNR估计给出。 可以基于(1)发射和接收站的能力(例如,发射功率,接收机噪声系数和天线数量)来确定非对称参数,或者(2)第一链路(B,A)和 第二连接(A,B)。 版权所有(C)2010,JPO&INPIT
    • 56. 发明专利
    • Method and apparatus for polling in wireless communication system
    • 无线通信系统中的查询方法与装置
    • JP2013059047A
    • 2013-03-28
    • JP2012227324
    • 2012-10-12
    • Qualcomm Incクゥアルコム・インコーポレイテッドQualcomm Incorporated
    • MEYLAN ARNAUD
    • H04W28/04H04W28/06H04W74/06
    • H04W28/06H04L1/1664H04L1/1685H04L1/1812H04L47/10H04L47/33H04L47/365H04W74/06
    • PROBLEM TO BE SOLVED: To provide a data packet communication system which enables Automatic Repeat Request (ARQ) whereby polling of a receiver is accomplished with a reduced amount of redundantly transmitted data.SOLUTION: Upon a polling event, such as emptying of a transmission buffer of a transmitter, expiration of a polling timer, or reaching a radio link control (RLC) protocol data unit (PDU) count threshold, the transmitter sends a polling command to a receiver. This polling command is smaller than any of the RLC PDUs by resegmenting to a variably sized PDU sending a reduced amount of data. With evolving communication standards tending toward larger PDUs, such as in excess of a kilobyte for HSPA+ (High-Speed Packet Access Evolution) and 3GPP LTE (Long Term Evolution), this inefficiency can be of increasing impact.
    • 要解决的问题:提供一种能够进行自动重传请求(ARQ)的数据分组通信系统,其中通过减少量的冗余传输数据完成对接收机的轮询。 解决方案:在轮询事件(例如,清空发射机的传输缓冲器,轮询定时器到期或达到无线电链路控制(RLC)协议数据单元(PDU)计数阈值)之后,发射机发送轮询 命令接收器。 该轮询命令比任何一个RLC PDU小,通过重新分组到发送减少的数据量的可变大小的PDU。 随着不断变化的通信标准趋向于更大的PDU,例如超过一千字节的HSPA +(高速分组接入演进)和3GPP LTE(长期演进)),这种低效率可能会产生越来越大的影响。 版权所有(C)2013,JPO&INPIT
    • 58. 发明专利
    • Open-loop rate control for tdd communication system
    • TDD通信系统的开环速率控制
    • JP2013168967A
    • 2013-08-29
    • JP2013058281
    • 2013-03-21
    • Qualcomm Incクゥアルコム・インコーポレイテッドQualcomm Incorporated
    • WALTON JAY RODNEYSURINENI SHRAVAN KMEYLAN ARNAUDNANDA SANJIV
    • H04W28/06H04J99/00H04W28/18H04W72/04
    • H04L1/0015H04B17/309H04L1/0002H04L1/1607Y02D50/10
    • PROBLEM TO BE SOLVED: To provide techniques for performing open-loop rate control in a TDD communication system.SOLUTION: The channel quality of a first link is estimated based on a transmission received via the first link (114). The channel quality of a second link is estimated based on the estimated channel quality of the first link and an asymmetric parameter (116). At least one rate for a data transmission via the second link is selected based on the estimated channel quality of the second link (118). The estimated channel quality for each link may be given by a set of SNR estimates for a set of transmission channels on that link (120). The asymmetric parameter may be determined based on (1) the capabilities (e.g., transmit power, receiver noise figure, and number of antennas) of the transmitting and receiving stations or (2) received SNRs for the first and the second links.
    • 要解决的问题:提供在TDD通信系统中执行开环速率控制的技术。解决方案:基于经由第一链路(114)接收的传输来估计第一链路的信道质量。 基于第一链路的估计信道质量和非对称参数来估计第二链路的信道质量(116)。 基于第二链路(118)的估计信道质量来选择用于经由第二链路的数据传输的至少一个速率。 每个链路的估计信道质量可以由针对该链路(120)上的一组传输信道的一组SNR估计来给出。 可以基于(1)发射和接收站的能力(例如,发射功率,接收机噪声系数和天线数)来确定非对称参数,或者(2)第一和第二链路的接收SNR。