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    • 4. 发明申请
    • SYSTEM AND METHOD FOR NEGATIVE ACKNOWLEDGEMENT-BASED CONGESTION CONTROL
    • 用于基于负值确认控制的系统和方法
    • WO2005011187A1
    • 2005-02-03
    • PCT/IB2004/002343
    • 2004-07-22
    • NOKIA CORPORATIONLE, HuihuaWU, HaitaoJIN, YuehuiZHANG, DongmeiMA, Jian
    • LE, HuihuaWU, HaitaoJIN, YuehuiZHANG, DongmeiMA, Jian
    • H04L1/18
    • H04W80/06H04L1/0001H04L1/0002H04L1/1628H04L1/1867H04L1/187H04L1/20H04W28/0242
    • The invention provides a method and system for transmitting information between a sending means and a receiving means using packets for information transmission. The receipt of transmitted packets is acknowledged and unacknowledged packets are retransmitted from the sending means. The amount of transmitted unacknowledged information or the number of consecutive unacknowledged packets is detected, and the reason for information or packet loss is determined based on the amount of transmitted unacknowledged information or the number of consecutive unacknowledged packets. This amount is compared with a path maximum transmission unit (PMTU) to determine the reason for loss. A single or small number of unacknowledged packets is determined to be a result of Bit Error Rate (BER), whereas a larger number of consecutive unacknowledged packets may be determined to be congestion. Congestion control parameters are kept unchanged when the reason for loss is caused by Bit Error Rate (BER), whereas control parameters are changed when the reason for loss is congestion.
    • 本发明提供一种用于在发送装置和接收装置之间使用用于信息传输的分组来发送信息的方法和系统。 发送的分组的接收被确认,并且从发送装置重传未确认的分组。 检测到发送的未确认信息的数量或连续的未确认分组的数量,并且基于发送的未确认信息的量或连续的未确认分组的数量来确定信息或分组丢失的原因。 将该量与路径最大传输单元(PMTU)进行比较,以确定丢失的原因。 一个或多个未确认的分组被确定为误码率(BER)的结果,而较大数量的连续未确认分组可被确定为拥塞。 当丢包原因是由误码率(BER)引起的,拥塞控制参数保持不变,而丢失原因拥塞时控制参数会发生变化。