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    • 61. 发明申请
    • Cellular Communication System Support for Limited Bandwidth Communication Devices
    • 蜂窝通信系统支持有限带宽通信设备
    • US20120327895A1
    • 2012-12-27
    • US13398787
    • 2012-02-16
    • Anders WallénBengt LindoffErik ErikssonJoakim AxmonLeif Wilhelmsson
    • Anders WallénBengt LindoffErik ErikssonJoakim AxmonLeif Wilhelmsson
    • H04W72/04
    • H04W48/12H04L5/0053H04L5/0091H04L5/0094
    • A communication system node transmits first control channel information on a control channel that extends over a first bandwidth of a radiofrequency resource. The first control channel information is necessary to enable a first type of communication device, capable of receiving a signal having the first bandwidth, to establish a connection with a host cell. A MIB, occupying a second bandwidth-size part of the first bandwidth, is transmitted. The second bandwidth is smaller than the first bandwidth and is receivable by a second type of communication device having reduced receive bandwidth capabilities. The MIB has a first part comprising first part information necessary to enable the first type of communication device to establish the connection with the host cell, and a second part comprising second part information directly or indirectly enabling the second type of communication device to obtain parameters that enable connection establishment with the host cell.
    • 通信系统节点在通过射频资源的第一带宽上延伸的控制信道上发送第一控制信道信息。 第一控制信道信息对于能够接收具有第一带宽的信号的第一类型的通信设备来建立与主机小区的连接是必需的。 占用第一带宽的第二带宽大小部分的MIB被发送。 第二带宽小于第一带宽,并且可以由具有降低的接收带宽能力的第二类型的通信设备接收。 MIB具有第一部分,其包括使得第一类型的通信设备能够建立与主机小区的连接所必需的第一部分信息,以及包括第二部分信息的第二部分直接或间接地使第二类型的通信设备获得参数, 启用与主机单元的连接建立。
    • 65. 发明申请
    • Scheduling Retransmissions for Contention-Based Access
    • 基于竞争性访问的计划重传
    • US20110249632A1
    • 2011-10-13
    • US12908310
    • 2010-10-20
    • Erik ErikssonAnna LarmoStefano Sorrentino
    • Erik ErikssonAnna LarmoStefano Sorrentino
    • H04W72/12
    • H04L1/1887H04W74/02H04W74/085
    • A base station supports a contention-based channel and a schedule-based channel. If too many mobile terminals simultaneously transmit on the contention-based channel, the base station schedules retransmissions to those terminals on the schedule-based channel. Supporting this, a terminal transmits a user transmission on the contention-based channel that includes both a data transmission and a reference signal. The terminal derives this reference signal by selecting one of a plurality of cyclic shifts (CSs). Correspondingly, the base station receives the user transmission and can determine the selected CS even if it is unable to demodulate the data transmission. The base station then determines a retransmission identifier (RTI) mapped to that CS, according to a mapping between CSs and RTIs, and sends scheduling information for any needed retransmission to the terminal by addressing that information to the RTI. Meanwhile, the terminal knows this mapping and monitors for scheduling information addressed to that RTI.
    • 基站支持基于竞争的频道和基于日程表的频道。 如果太多的移动终端在基于竞争的信道上同时发送,则基站在基于调度的信道上调度到这些终端的重传。 支持这一点,终端在基于竞争的信道上发送包括数据传输和参考信号的用户传输。 终端通过选择多个循环移位(CS)中的一个来导出该参考信号。 相应地,基站接收用户传输,并且即使不能解调数据传输也可以确定所选择的CS。 然后,基站根据CS和RTI之间的映射来确定映射到该CS的重传标识符(RTI),并且通过将该信息解码到RTI来向终端发送任何所需重传的调度信息。 同时,终端知道该映射并监视寻址到该RTI的调度信息。