CN102104915A - PMIP-based QoS control method and system - Google Patents
PMIP-based QoS control method and system Download PDFInfo
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- CN102104915A CN102104915A CN2009102436758A CN200910243675A CN102104915A CN 102104915 A CN102104915 A CN 102104915A CN 2009102436758 A CN2009102436758 A CN 2009102436758A CN 200910243675 A CN200910243675 A CN 200910243675A CN 102104915 A CN102104915 A CN 102104915A
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Abstract
The invention discloses a proxy mobile internet protocol (PMIP)-based quality of service (QoS) control method and a PMIP-based QoS control system. The QoS control method mainly comprises the following steps of: carrying out expansion on a PMIP; establishing tunnels for each service of a terminal; and setting QoS type information for each tunnel so as to realize the QoS control of data packets of each service in the tunnels in the transmission process. Compared with the prior art, the method and the system have the characteristics of realizing the QoS control with lower granularity and the differentiation control aiming at services.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of QoS control method and system based on proxy-mobile IP (PMIP).
Background technology
In present PMIP standard, defined multiple tunnel encapsulation modes such as IP IN IP, UDP, also defined the gre tunneling packaged type in the draft of expansion PMIP, by of the transmission of above-mentioned tunnel encapsulation mode to the laggard line data bag of tunnel encapsulation.Undertaken by encapsulation tunnel in the transmission course of packet, transmission network is not treated with a certain discrimination for each tunnel after encapsulating, and that is to say that the Quality of Service of the transmits data packets process in each tunnel is identical.
For the ease of the QoS management to the user, IETF NETEXT working group draft proposes the PMIP signaling of expansion, by increase the QoS option in the PMIP signaling.When at a terminal, when creating a gre tunneling for this terminal between MAG and the LMA, MAG fills in the IPv6 tos field according to the indication of QoS option in outer heading, in order to distinguishing the different QoS attribute in tunnel, and divide into the gre tunneling of different MN establishments with tunnel ID.
In present QoS control mode based on PMIP, can only carry out QoS control at the tunnel that each terminal is created, can't realize further fine-grained QoS control.
Summary of the invention
The embodiment of the invention provides a kind of QoS control method and system based on PMIP, realizes fine-grained QoS control and at the differentiation management of business.
A kind of method of controlling based on the QoS of PMIP, described method comprises:
At every pending business of terminal, create the tunnel of the packet of this pending business of transmission;
Be respectively every tunnel the QoS type information is set, the packet by this tunnel transmission is carried out QoS control according to QoS type information for the tunnel setting;
Wherein, the QoS type information in tunnel is according to the pending business setting of this tunnel correspondence.
A kind of system that controls based on the QoS of PMIP, described system comprises:
The tunnel creation unit is used for every pending business at terminal, creates the tunnel of the packet of this pending business of transmission;
Information setting unit is used for the pending business according to this tunnel correspondence, is respectively every tunnel the QoS type information is set;
Control unit is used for according to the QoS type information for the tunnel setting packet by this tunnel transmission being carried out QoS control.
Because the embodiment of the invention is expanded the PMIP agreement, every service creation tunnel at terminal, and by the QoS type information being set for every tunnel, realized being the QoS control of each professional packet in the tunnel in transmission course, therefore, compared with prior art, realized more fine-grained QoS control, and realized differentiation control at business.
Description of drawings
Fig. 1 is based on the QoS control method schematic diagram of PMIP in the embodiment of the invention one;
Fig. 2 is based on the QoS control system structural representation of PMIP in the embodiment of the invention two.
Embodiment
In order to realize QoS precision management and control at user class, the embodiment of the invention proposes the service creation gre tunneling at the terminal execution, on at each tunnel of service creation, define different QoS type informations, use the QoS type information of definition that the packet by tunnel transmission is carried out QoS control, realize fine-grained QoS control and at the differentiation management of business.
Below in conjunction with Figure of description the embodiment of the invention is described in detail.
Embodiment one:
As shown in Figure 1, in the embodiment of the invention one based on the QoS control method schematic diagram of PMIP, said method comprising the steps of:
Step 101:, create the tunnel of the packet of this pending business of transmission respectively at every pending pending business of terminal.
In the present embodiment, tunnel is used to transmit the packet of a business.
The tunnel of creating can be the tunnel that encapsulates by the GRE mode between MAG and the LMA, the tunnel that also can be other encapsulate such as IP IN IP mode or UDP mode.
This step can be created the purpose in tunnel by every pending business that expansion PMIP agreement is reached for terminal respectively.Specific practice is: increase the channel type option in the PMIP protocol contents, terminal is tunnel of each service definition in the channel type option, and the PMIP agreement request that will carry the channel type option is notified to MAG, is tunnel of each service creation by MAG according to the content in the channel type option.
Step 102: be respectively every tunnel the QoS type information is set.
The QoS type information in tunnel is according to the pending business setting of this tunnel correspondence, for example: at tunnel of terminal Online Video service creation, during the QoS type information that is provided with for this tunnel, can be according to information such as Business Nature, transmission states, make to the QoS type information of this tunnel setting and the quantity of data packets of this tunnel transmission to adapt.
The specific implementation of this step can be:
Increase the QoS option in the PMIP in every tunnel signaling, the QoS type information of this tunnel correspondence is set in this QoS option, the QoS type information includes but not limited to: the maximum packet loss of the maximum bandwidth of permission, permission and the maximum transmitted time delay of permission.
Step 103: the packet by this tunnel transmission is carried out QoS control according to QoS type information for the tunnel setting.
In the present embodiment, be after a tunnel is provided with the QoS type information, need this QoS type information is mapped in the corresponding QoS controlling mechanism of IP transmission network that soon the content map in the QoS type information is in the IP route system.
For example: when being the tunnel that encapsulates by the GRE mode between MAG and the LMA in the tunnel of creating, at first need MAG and LMA are carried out the function expansion, make MAG and LMA support to control at the QoS in each tunnel, and other transmission nodes of being used to transmit this tunnel data packet loaded between MAG and the LMA router etc. of transfer (as be used to transmit) are carried out the function expansion, make other transmission nodes also support QoS control at each tunnel.This QoS type information is mapped in the corresponding QoS controlling mechanism of IP transmission network, just make the transmission node of tunnel data packet loaded transmission process can both be known as the QoS type information that this is provided with this tunnel, and according to this QoS type information the transmission state of packet is controlled, make the transmission state of packet satisfy the requirement of QoS type information all the time.
Different QoS control mode when illustrating below at the different QoS type information:
Give an example 1:
Suppose that the tunnel of creating is the tunnel that encapsulates by the GRE mode between MAG and the LMA, the QoS type information comprises the maximum bandwidth of permission, then at the maximum bandwidth that allows to the QoS control mode of transmission of data packets is:
The bandwidth that the tunnel that detection is created on MAG takies and the actual bandwidth that takies of packet of current this tunnel transmission, MAG or other network elements can compare the maximum bandwidth of actual bandwidth that takies of packet and permission, if the actual bandwidth that takies of packet reaches the maximum bandwidth of permission, then reduce the bandwidth that data packets for transmission takies in the tunnel, the bandwidth that the flow in restriction tunnel takies is no more than the maximum bandwidth of permission.
Give an example 2:
Suppose that the tunnel of creating is the tunnel that encapsulates by the GRE mode between MAG and the LMA, the QoS type information comprises the maximum packet loss of permission, then at the maximum packet loss that allows to the QoS control mode of transmission of data packets is:
At a router in the transmission of data packets, on this router, detect the actual packet loss of the packet of the tunnel transmission of creating, this router can compare the actual packet loss of packet and the maximum packet loss of permission, if the actual packet loss of packet reaches the maximum packet loss of permission, then improve the tunnel transmission priority of data packets, minimizing is preferentially satisfied the transmission requirement of the packet in this tunnel to the packet loss of data packets for transmission in the tunnel.
Embodiment two:
The embodiment of the invention two also provides a kind of system that controls based on the QoS of PMIP, as shown in Figure 2, described system comprises tunnel creation unit 11, information setting unit 12 and control unit 13, wherein: tunnel creation unit 11 is used for every pending business at terminal, creates the tunnel of the packet of this pending business of transmission; Information setting unit 12 is used for the pending business according to this tunnel correspondence, is respectively every tunnel the QoS type information is set; Control unit 13 is used for according to the QoS type information for the tunnel setting packet by this tunnel transmission being carried out QoS control.
The described tunnel that described tunnel creation unit 11 is created is the tunnel that encapsulates by the GRE mode.
The QoS type information that described information setting unit 12 is provided with includes but not limited to following at least a information:
The maximum bandwidth, the maximum packet loss of permission and the maximum transmitted time delay of permission that allow.
According to the content difference that the QoS type information comprises, the mode that the packet of 13 pairs of tunnel transmission of control unit carries out QoS control is also different:
When described QoS type information comprises the maximum bandwidth of permission, described control unit 13 specifically is used to detect the actual bandwidth that takies of packet of tunnel transmission, when the actual bandwidth that takies of packet reaches the maximum bandwidth that allows in the QoS type information of this tunnel correspondence, reduce the bandwidth that data packets for transmission takies in the tunnel.
When described QoS type information comprises the maximum packet loss of permission, described control unit 13 specifically is used to detect the actual packet loss of the packet of tunnel transmission, when the actual packet loss of data packets for transmission reaches the maximum packet loss that allows in the QoS type information of this tunnel correspondence, reduce packet loss to data packets for transmission in the tunnel.
Should be noted that, the content that the QoS type information of putting down in writing in the embodiment of the invention comprises is the feasible scheme of the embodiment of the invention, and the embodiment of the invention also is not limited to other contents that can control the transmission state of packet as the content in the QoS type information.Control unit 13 carries out QoS control according to the content that comprises in the QoS type information to data packets for transmission in the tunnel, and the transmission state of packet and state that the QoS type information requires are adapted.
The method and system that provides by the embodiment of the invention, transmission node in PMIP agreement and the transmission of data packets is expanded, in the PMIP agreement, increase the channel type option, every service creation tunnel at terminal, for the tunnel of creating is provided with the QoS type information, and the QoS type information in tunnel is mapped in the IP route system, realize fine-grained QoS control at business.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. method based on the quality of service QoS of PMIP control is characterized in that described method comprises:
At every pending business of terminal, create the tunnel of the packet of this pending business of transmission;
Be respectively every tunnel the QoS type information is set, the packet by this tunnel transmission is carried out QoS control according to QoS type information for the tunnel setting;
Wherein, the QoS type information in tunnel is according to the pending business setting of this tunnel correspondence.
2. the method for claim 1 is characterized in that, described QoS type information comprises following at least a information:
The maximum bandwidth, the maximum packet loss of permission and the maximum transmitted time delay of permission that allow.
3. the method for claim 1 is characterized in that, when described QoS type information comprises the maximum bandwidth of permission, the packet of tunnel transmission is carried out QoS control, comprising:
Detect the actual bandwidth that takies of packet of tunnel transmission, when the actual bandwidth that takies of packet reaches the maximum bandwidth that allows in the QoS type information of this tunnel correspondence, reduce the bandwidth that data packets for transmission takies in the tunnel.
4. the method for claim 1 is characterized in that, when described QoS type information comprises the maximum packet loss of permission, the packet of tunnel transmission is carried out QoS control, comprising:
Detect the actual packet loss of the packet of tunnel transmission, when the actual packet loss of data packets for transmission reaches the maximum packet loss that allows in the QoS type information of this tunnel correspondence, reduce packet loss data packets for transmission in the tunnel.
5. as the arbitrary described method of claim 1～4, it is characterized in that,
The described tunnel of creating is the tunnel that encapsulates by the GRE mode.
6. system based on the quality of service QoS of PMIP control is characterized in that described system comprises:
The tunnel creation unit is used for every pending business at terminal, creates the tunnel of the packet of this pending business of transmission;
Information setting unit is used for the pending business according to this tunnel correspondence, is respectively every tunnel the QoS type information is set;
Control unit is used for according to the QoS type information for the tunnel setting packet by this tunnel transmission being carried out QoS control.
7. system as claimed in claim 6 is characterized in that,
The QoS type information of described information setting unit sets comprises following at least a information:
The maximum bandwidth, the maximum packet loss of permission and the maximum transmitted time delay of permission that allow.
8. system as claimed in claim 6 is characterized in that,
Described control unit, specifically be used for when described QoS type information comprises the maximum bandwidth of permission, detect the actual bandwidth that takies of packet of tunnel transmission, when the actual bandwidth that takies of packet reaches the maximum bandwidth that allows in the QoS type information of this tunnel correspondence, reduce the bandwidth that data packets for transmission takies in the tunnel.
9. system as claimed in claim 6 is characterized in that,
Described control unit, specifically be used for when described QoS type information comprises the maximum packet loss of permission, detect the actual packet loss of the packet of tunnel transmission, when the actual packet loss of data packets for transmission reaches the maximum packet loss that allows in the QoS type information of this tunnel correspondence, reduce packet loss to data packets for transmission in the tunnel.
10. as the arbitrary described system of claim 6～9, it is characterized in that,
The described tunnel that described tunnel creation unit is created is the tunnel that encapsulates by the GRE mode.
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