公开(公告)号：US20090241005A1

公开(公告)日：2009-09-24

申请号：US12442020

申请日：2007-09-21

申请人： Tae-Chul Hong ,  Kun-Seok Kang ,  Do-Seob Ahn ,  Ho-Jin Lee

发明人： Tae-Chul Hong ,  Kun-Seok Kang ,  Do-Seob Ahn ,  Ho-Jin Lee

IPC分类号： H04L1/18 ,  G06F11/14

CPC分类号： H04L1/1887 ,  H04L1/1819 ,  H04L1/1835

摘要： There is provided a method for packet scheduling in a selective hybrid automatic repeat request (HARQ) including the steps of: increasing a priority of a receiver buffer after a packet is transmitted to the receiver; receiving a feedback packet for the transmitted packet and determining whether the feedback packet is an ACK packet or a NACK packet; lowering the priority of the receiver buffer if the feedback packet is an ACK packet; determining whether the feedback packet is a NACK packet for initial transmission or the feedback packet is a NACK packet for retransmission if the feedback packet is the NACK packet, increasing the priority of the receiver buffer if the feedback packet is the NACK packet for the initial transmission, and lowering the priority of the receiver buffer if the feedback packet is the NACK packet for retransmission; and scheduling packets after calculating a priority of each receiver buffer by performing the priority increasing step to the determining step for all of receivers.

摘要翻译： 提供了一种用于选择性混合自动重复请求（HARQ）中的分组调度的方法，包括以下步骤：在分组被发送到接收机之后增加接收机缓冲器的优先级; 接收所发送的分组的反馈分组，并确定反馈分组是ACK分组还是NACK分组; 如果反馈分组是ACK分组，则降低接收机缓冲器的优先级; 确定反馈分组是否是用于初始传输的NACK分组，或者如果反馈分组是NACK分组，则反馈分组是用于重传的NACK分组，如果反馈分组是用于初始传输的NACK分组，则增加接收机缓冲器的优先级 并且如果反馈分组是用于重发的NACK分组，则降低接收机缓冲器的优先级; 以及通过对所有接收机执行到确定步骤的优先级增加步骤来计算每个接收器缓冲器的优先级之后调度分组。

公开(公告)号：US20100050035A1

公开(公告)日：2010-02-25

申请号：US12441277

申请日：2007-09-13

申请人： Tae-Chul Hong ,  Kun-Seok Kang ,  Do-Seob Ahn ,  Ho-Jin Lee

发明人： Tae-Chul Hong ,  Kun-Seok Kang ,  Do-Seob Ahn ,  Ho-Jin Lee

IPC分类号： H04L1/08 ,  G06F11/14

CPC分类号： H04L1/1819 ,  H04L1/1809

摘要： Provided is a method for preventing consecutive packet errors in a transmitter by combining a hybrid automatic repeat request (HARQ) type II with a selective automatic repeat request (ARQ), including: transmitting a data packet from the transmitter to a receiver; when a negative acknowledgement (NACK) packet corresponding to the data packet is received from the receiver, checking stored information in the NACK packet wherein the stored information represent whether or not the data packet is stored in a buffer; when the data packet is stored in the buffer, transmitting a packet having parity bits to the receiver and storing the data packet in a retransmission queue; and when the data packet is not stored in the buffer, re-transmitting the data packet and maintaining the data packet stored in a transmission queue.

摘要翻译： 提供了一种通过将II型混合自动重复请求（HARQ）与选择性自动重传请求（ARQ）组合来防止发射机中的连续分组错误的方法，包括：将数据分组从发射机发射到接收机; 当从接收器接收到对应于数据分组的否定确认（NACK）分组时，检查NACK分组中存储的信息，其中所存储的信息表示数据分组是否存储在缓冲器中; 当数据分组存储在缓冲器中时，向接收机发送具有奇偶校验位的分组，并将数据分组存储在重传队列中; 并且当数据分组未存储在缓冲器中时，重新发送数据分组并维护存储在传输队列中的数据分组。

公开(公告)号：US20080253333A1

公开(公告)日：2008-10-16

申请号：US12066723

申请日：2006-07-24

申请人： Tae-Chul Hong ,  Kun-Seok Kang ,  Do-Seob Ahn ,  Ho-Jin Lee

发明人： Tae-Chul Hong ,  Kun-Seok Kang ,  Do-Seob Ahn ,  Ho-Jin Lee

IPC分类号： H04Q7/00

CPC分类号： H04W28/20 ,  H04W28/26 ,  H04W36/22

摘要： Provided is a call admission control method for use in a packet based communication system, which can secure a handoff and a quality of service (QoS) by discriminating a new call and a handoff call and borrowing a shared bandwidth, a reserved bandwidth, and a bandwidth of other service according to kinds of services and their characteristics. The call admission control method includes the steps of: a) dividing frequency band into a reservation band and a shared band for communication service handoff call and multicast service handoff call, and determining whether a call admission request of users is a new call or a handoff call; b) when the call admission request is the new call, determining whether to accept the call admission request by allocating the shared band and a band borrowed from other service; and c) when the call admission request is the handoff call, determining whether to accept the call admission request by allocating the shared band, the reserved band, and the borrowed band according to services and bandwidth resources.

摘要翻译： 提供一种在基于分组的通信系统中使用的呼叫准入控制方法，其可以通过区分新的呼叫和切换呼叫并借用共享带宽，保留带宽和保留带宽来确保切换和服务质量（QoS） 其他服务的带宽根据服务种类及其特点。 呼叫准入控制方法包括以下步骤：a）将频带划分为用于通信业务切换呼叫和组播服务切换呼叫的预留频带和共享频带，以及确定用户的呼叫准入请求是新呼叫还是切换 呼叫; b）当呼叫许可请求是新呼叫时，通过分配共享频带和从其他服务借用的频段确定是否接受呼叫准入请求; 以及c）当呼叫许可请求是越区切换呼叫时，根据服务和带宽资源来分配共享频带，保留频带和借用频带来确定是否接受呼叫许可请求。

公开(公告)号：US08411615B2

公开(公告)日：2013-04-02

申请号：US12943182

申请日：2010-11-10

申请人： Tae-Chul Hong ,  Kunseok Kang ,  Do-Seob Ahn ,  Ho-Jin Lee

发明人： Tae-Chul Hong ,  Kunseok Kang ,  Do-Seob Ahn ,  Ho-Jin Lee

IPC分类号： H04B7/185

CPC分类号： H04B7/18543 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0021 ,  H04L1/0026 ,  H04L1/0028 ,  H04W52/262 ,  H04W52/58

摘要： A power controlled adaptive modulation and coding (AMC) scheme in a satellite communications system includes: calculating, by a user terminal, a received signal-to-noise ratio (SNR) through a packet received from a base station; removing a power control level applied to a packet received before the received packet from the calculated received SNR, and deciding the value obtained by decreasing the calculated received SNR by the power control level; deciding an AMC mode based on the decided received SNR; determining whether power control is required, and deciding a required power control magnitude depending on a channel state positioned in the AMC mode range; transmitting the decided AMC mode and the decided power control information to the base station through channel quality indicator (CQI) feedback; and applying the AMC mode based on information received, and increasing a power by a power control magnitude decided from the received information.

摘要翻译： 卫星通信系统中的功率控制自适应调制和编码（AMC）方案包括：由用户终端通过从基站接收的分组来计算接收信噪比（SNR）; 从所计算的接收到的SNR中去除应用于在接收到的分组之前接收到的分组的功率控制电平，以及通过将所计算的接收SNR减小所获得的值来确定功率控制电平; 基于所确定的接收到的SNR来决定AMC模式; 确定是否需要功率控制，以及根据位于AMC模式范围内的信道状态来确定所需的功率控制幅度; 通过信道质量指示符（CQI）反馈将决定的AMC模式和决定的功率控制信息发送到基站; 以及基于所接收的信息应用AMC模式，并且通过从所接收的信息确定的功率控制量来增加功率。