Patent ID: 8305920

Claim:
A method for determining Quality of Service (QoS) level, comprising: receiving, by a Coaxial-cable Line Terminal (CLT), a first packet of a user terminal from a Coaxial-cable Network Unit (CNU); wherein the first packet is transmitted by the CNU according to a default QoS level pre-set in the CNU for the user terminal; obtaining, by the CLT, QoS characteristic information from the first packet, assigning, by the CLT, a QoS level for the user terminal according to the QoS characteristic information and a QoS classification principle stored in the CLT; sending, by the CLT, relevant information of the assigned QoS level to the CNU which determines the QoS level for subsequent packets sent by the user terminal according to the relevant information of the assigned QoS level, wherein the sending the relevant information of the assigned QoS level to the CNU comprises: sending, by the CLT, a corresponding relationship between an address of the user terminal and the assigned QoS level to the CNU, which determines the QoS level for the subsequent packets sent by the user terminal according to the address of the user terminal carried in the subsequent packets and the corresponding relationship between the address of the user terminal and the assigned QoS level.