METHOD FOR SELECTING QoS POLICY AND SYSTEM THEREOF

Abstract

A method and a system for selecting Quality of Service (QoS) policy is provided. The method includes: setting QoS policy processing information in a QPH; receiving, by a QoS Manager (QM), a QoS request from a CP, selecting a QPH to provide QoS policy for a traffic stream according to the processing information of each QPH in a home network, and providing QoS policy to the traffic stream according to the QoS policy of the selected QPH. Through the provided method and the system, the problem that only the QoS policy of the QPH specified by the CP or the default QoS policy can be used as the QoS policy of the traffic stream when multiple QPHs exist in the home network is solved.

1 . A method for selecting Quality of Service (QoS) policy, comprising:
 receiving a QoS request from a Control Point (CP), by a QoS Manager (QM),   selecting a QoS Policy Holder (QPH) to provide QoS policy for a traffic stream according to a QoS policy processing information of each QPH in a home network, the QoS policy processing information being set for each QPH; and   providing the selected QoS policy for the traffic stream.   
   
   
       2 . The method of  claim 1 , wherein the QoS policy processing information comprises at least one of: a last modified time of the QPH policy (QPH LMT), a start time of the QPH accessing the home network (QPH ST), a total online time of the QPH being selected (QPH TOT) and a QPH priority number configured by a user (QPH PN). 
   
   
       3 . The method of  claim 2 , comprises:
 when a device supporting QPH service accesses the home network, or a program with QPH service starts running in the home network, setting the QPH ST by the QPH;   configuring, by a user, a QoS policy and recording the QPH ST and the QPH PN according to a home network status.   
   
   
       4 . The method of  claim 3 , wherein the step of selecting a QPH to provide QoS policy for a traffic stream according to the QoS policy processing information of each QPH in a home network comprises:
 reading, by the QM, the QoS policy processing information of each QPH in the home network;   selecting, by the QM, the QPH to provide QoS policy for the traffic stream through comparing the QoS policy processing information.   
   
   
       5 . The method of  claim 4 , wherein the step of selecting the QPH to provide QoS policy for the traffic stream through comparing the QoS policy processing information comprises at least one of:
 selecting the QPH having a latest modified QoS policy to serve the traffic stream through comparing the QPH LMT of each QPH;   selecting the QPH accessing the home network first to serve the traffic stream by comparing the QPH ST of each QPH;   selecting the QPH having a longest online time to serve the traffic stream by comparing the QPH TOT of each QPH; and   selecting the QPH having a highest priority level to serve the traffic stream by comparing the QPH PN of each QPH.   
   
   
       6 . The method of  claim 2 , wherein the method further comprises:
 upon receiving a policy synchronization message sent by the QPH, reading, by the QM, the QPH policy processing information in each QPH in a home network;   determining, by the QM, the QPH to provide QoS policy for the traffic stream after comparing the obtained QPH policy processing information;   synchronizing, by the QM, the QoS policies of all the QPHs according to the QoS policy of the determined QPH; and   the step of selecting a QPH to provide QoS policy for the traffic stream according to the QoS policy processing information set in each QPH in the home network comprises:   selecting, by the QM or the CP, any one of the QPHs in the home network as the QPH of the traffic stream and using the QoS policy of the selected QPH as the QoS policy of the traffic stream.   
   
   
       7 . The method of  claim 6 , wherein the step of synchronizing the QoS policies of all the QPHs according to the QoS policy of the determined QPH comprises:
 reading, by the QM, the QoS policy of the determined QPH, and setting the QoS policy of the determined QPH to all the QPHs in the home network.   
   
   
       8 . The method of  claim 6 , wherein the policy synchronization message is sent by the QPH to the QM after the QPH accesses the home network or after the user configures the QPH. 
   
   
       9 . The method of  claim 2 , wherein the step of selecting a QPH to provide QoS policy for the traffic stream according to the QPH policy processing information in each QPH in the home network comprises:
 when the QM determines that the CP has specified a QPH to provide QoS policy for the traffic stream, searching, by the QM, the home network to check whether there exists a selected QPH;   if there is no selected QPH, determining to use the QPH specified by the CP to provide QoS policy for the traffic stream;   if there is a selected QPH, determining whether the QPH specified by the CP is the selected QPH according to the QoS policy processing information of the selected QPH; and   when the QM determines that there is no QPH being specified by the CP to provide QoS policy for the traffic stream, searching, by the QM, the home network to check whether there exists a selected QPH;   if there is no selected QPH, comparing the QPH LMT and selecting a QPH having the latest modified QoS policy to serve the traffic stream; or comparing the QPH ST and selecting the QPH accessing the home network first to serve the traffic stream; or comparing the QPH TOT and selecting the QPH having the longest online time to serve the traffic stream; or comparing the QPH PN and selecting the QPH having the highest priority to serve the traffic stream; or selecting the QPH to serve the traffic stream according to any combination of the above; and   if there exists a selected QPH, determining to use the selected QPH to provide QoS policy for the traffic stream.   
   
   
       10 . The method of  claim 9 , wherein determining whether the QPH specified by the CP is the selected QPH according to the QoS policy processing information of the selected QPH comprises:
 obtaining, by the QM, the QoS policy from the selected QPH and determining the user level of the traffic stream, and comparing the user level of the traffic stream with that of the existing traffic stream in the home network; if the user level of the existing traffic stream is no lower than that of the traffic stream, sending error information to the CP; otherwise, determining the QPH specified by the CP to be the QPH for providing QoS policy to the traffic stream.   
   
   
       11 . The method of  claim 9 , further comprising:
 after determining the QPH specified by the CP to be the QPH for providing QoS policy to the traffic stream, using, by the QM, the QoS policy of the QPH specified by the CP, setting, in the QM, an identifier indicating that there is an used QPH and a QPH identifier for the QPH specified by the CP, and updating the QoS policy of the existing traffic stream; and   notifying, by the QM, other QMs to update the identifier indicating that there is an used QPH for the selected QPH and the QPH identifier for the QPH specified by the CP.   
   
   
       12 . The method of  claim 10 , further comprising:
 after determining the QPH specified by the CP to be the QPH for providing QoS policy to the traffic stream, using, by the QM, the QoS policy of the QPH specified by the CP, setting, in the QM, a used QPH identifier indicating that there is an used QPH and a QPH identifier for the QPH specified by the CP, and updating the QoS policy of the existing traffic stream; and   notifying, by the QM, other QMs to update the identifier indicating that there is an used QPH for the selected QPH and the QPH identifier for the QPH specified by the CP.   
   
   
       13 . The method of  claim 9 , further comprising:
 when the QM determines that there is no QPH being specified by the CP to provide QoS policy for the traffic stream and after the step of selecting a QPH to provide QoS policy for the traffic stream, using, by the QM, the QoS policy of the selected QPH, setting, in the QM, an identifier indicating that there is an used QPH and a QPH identifier for the selected QPH, updating the QoS policy of the existing traffic stream; and   notifying, by the QM, other QMs to update their respective identifier indicating that there is an used QPH and update their respective QPH identifier for the selected QPH.   
   
   
       14 . A system for selecting a Quality of Service (QoS) policy, comprising:
 a QoS Manager (QM), a QoS Policy Holder (QPH) storing QoS policy processing information, and a QoS Device (QD), wherein:
 the QM receives a QoS request from a Control Point (CP), selects one QPH according to the QoS policy processing information respectively obtained from the QPHs in a home network, sends a traffic stream to the selected QPH and requesting for a QoS policy from the selected QPH, and controls the operation of the QD on the QoS of the traffic stream according to the obtained QoS policy; 
 the QPH provides QoS policy processing information to the QM, obtains a QoS policy in the QPH according to the traffic stream provided by the QM, and sends the QoS policy to the QM; and 
 the QD sets up QoS for a traffic stream and performs operation on QoS when the traffic stream is transmitted under the control of the QM.