CN105122854A - Method, apparatus and system for controlling route optimization - Google Patents

Abstract

The embodiment of the invention discloses a method, device and system for controlling route optimization, relates to the communication field, and can realize the control of route optimization channels for distributed mobility management. The specific solution is: the first device obtains the first routing control information, the first device is the home location manager HLM of the MN or the home mobile router HMR of the MN, and the first routing control information is used to indicate the removal The RO channel: the first device sends the first routing control information to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN is removed The RO channel. The invention is used to control the routing optimization channel of distributed mobility management.

Description

A method, device and system for controlling route optimization Technical field

The present invention relates to the communication field, and in particular to a method, device and system for controlling route optimization.

Background technique

In a distributed mobility management (distributed mobility management, referred to as DMM) system, a mobile node (mobile node, referred to as MN) mobile router (mobility router, referred to as MR) is established by using a route optimization (referred to as RO) function. The shortest routing path (that is, the routing optimization channel) between MRs of the corresponding node (correspondent node, CN for short) can avoid the path redundancy caused by the data packets of the MN not passing through the routing optimization channel. It can also avoid the problem that the data packet forwarding point is prone to single point of failure because the data packets of the MN always pass through a certain data packet forwarding point.

However, the routing optimization function in the above-mentioned DMM system is automatically performed when the path of the data packet is redundant, and cannot be used in some specific communication scenarios, such as legal interception, service charging and other scenarios.

Contents of the invention

Embodiments of the present invention provide a method, device, and system for controlling route optimization, which can be used for real-time control of route optimization channels for distributed mobility management.

In order to achieve the above purpose, embodiments of the present invention adopt the following technical solutions:

In the first aspect, a method for controlling route optimization is provided, and the method is used in a distributed mobility management DMM system, and the DMM system uses a route optimization RO function to establish a CMR attached to a mobile node MN and an attached communication node CN RO channel between the CMRs, the method includes:

The first device acquires first routing control information, the first device is the home location manager HLM of the MN or the home mobile router HMR of the MN, and the first routing control information is used to instruct to remove the RO channel ; The first device sends the first routing control information to the MN-attached CMR or the CN-attached CMR, so that the MN-attached CMR or the CN-attached CMR removes the RO channel.

With reference to the first aspect, in a first possible implementation manner, in a case where the RO channel is not established between the CMR to which the MN is attached and the CMR of the CN, the method further includes:

The first device acquires second routing control information, where the second routing control information is used to indicate establishment of the RO channel;

The first device sends the second routing control information to the MN-attached CMR or the CN-attached CMR, so that the MN-attached CMR or the CN-attached CMR establishes the RO channel.

In combination with the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the method further includes:

The first device determines the HLM of the CN from the target address corresponding to the data packet sent by the MN.

In combination with the second possible implementation manner of the first aspect, in a third possible implementation manner, the method further includes:

The first device acquires the address of the CMR attached to the CN from the HLM of the CN.

In the second aspect, a method for controlling route optimization is provided, the method is used in a distributed mobility management DMM system, and the DMM system uses the route optimization RO function to establish the current mobile router CMR attached to the mobile node MN and the communication peer The RO channel between the CMRs attached to the node CN, including:

The CMR attached to the MN or the CMR attached to the CN receives the first routing control information sent by a first device, where the first device is the home location manager HLM of the MN or the home mobile router HMR of the MN, The first routing control information is used to instruct to remove the RO channel;

The CMR attached to the MN or the CMR attached to the CN removes the RO channel according to the first routing control information. With reference to the second aspect, in a first possible implementation manner, in a case where the RO channel is not established between the CMR to which the MN is attached and the CMR of the CN, the method further includes:

The CMR attached to the MN or the CMR attached to the CN receives second routing control information sent by the first device, where the second routing control information is used to indicate establishment of the RO channel;

The CMR attached to the MN or the CMR attached to the CN establishes the RO channel according to the second routing control information.

In a third aspect, an information forwarding device is provided, the information forwarding device is used in a distributed mobility management DMM system, and the DMM system uses a route optimization RO function to establish a CMR attached to a mobile node MN and a corresponding communication node CN to attach The RO channel between the CMRs of the MN, wherein the information forwarding device is the home location manager HLM of the MN or the home mobile router HMR of the MN, and the device includes: a receiving unit, configured to obtain a first routing control information, where the first routing control information is used to indicate to remove the RO channel;

a sending unit, configured to send the first routing control information received by the receiving unit to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN removes all Said RO channel.

With reference to the third aspect, in a first possible implementation manner, when the RO channel is not established between the CMR to which the MN is attached and the CMR of the CN, the receiving unit of the device is further configured to:

Acquiring second routing control information, where the second routing control information is used to indicate establishment of the RO channel;

The sending unit of the device is also used for:

sending the second routing control information received by the receiving unit to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN establishes the RO channel.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, the device further includes: A search unit, configured to determine the HLM of the CN from the target address corresponding to the data packet sent by the MN.

With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner, the device further includes:

An obtaining unit, configured to obtain the address of the CMR to which the CN is attached from the HLM of the CN determined by the searching unit.

In a fourth aspect, a routing control device is provided, and the routing control device is used in a distributed mobility management DMM system, and the DMM system uses a route optimization RO function to establish a current mobile router CMR attached to a mobile node MN and a communication peer An RO channel between CMRs attached to nodes CN, wherein the routing control device is the CMR attached to the MN or the CMR attached to the CN, and the routing control device includes: a receiving unit, configured to receive information sent by the forwarding device The first routing control information, the information forwarding device is the home location manager HLM of the MN or the home mobile router HMR of the MN, and the first routing control information is used to instruct to remove the RO channel;

A processing unit, configured to remove the RO channel according to the first routing control information received by the receiving unit.

With reference to the fourth aspect, in a first possible implementation manner, when the RO channel is not established between the CMR to which the MN is attached and the CMR of the CN, the receiving unit of the device is further configured to:

receiving second routing control information sent by the information forwarding device, where the second routing control information is used to indicate establishment of the RO channel;

The processing unit of the device is also used to:

Establishing the RO channel according to the second routing control information received by the receiving unit. In the fifth aspect, a system for controlling route optimization is provided, including:

At least one information forwarding device and at least one routing control device, the information forwarding device and the routing control device can perform information interaction;

Wherein, the information forwarding device is the information forwarding device described in the third aspect or any one of the possible implementation manners of the third aspect, and the routing control device is the fourth party The routing control device described in any one of the possible implementation manners of the aspect or the fourth aspect. In the above solution, the first device obtains the first routing control information, and the first device sends the first routing control information to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN removes the RO channel. Due to some specific scenarios, such as legal interception, business billing, etc., the use of the RO channel will lead to inaccurate monitoring paths or large errors in business billing. It is required that MN data can be carried out on the original channel without RO. The present invention In the above solution provided by the embodiment, by closing the RO channel in real time, it is possible to control the route optimization channel for distributed mobility management, so as to meet the requirements of some specific scenarios.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Apparently, the drawings in the following description are only These are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Figure 1 is a schematic structural diagram of a DDM network system provided by an embodiment of the present invention;

FIG. 2 is a schematic flowchart of a control routing optimization method provided by an embodiment of the present invention;

Fig. 3 is a schematic flow chart of a control routing optimization method provided by another embodiment of the present invention;

FIG. 4 is a signaling interaction diagram of a control routing optimization method provided by an embodiment of the present invention;

FIG. 5 is a signaling interaction diagram of a control route optimization method provided by another embodiment of the present invention;

FIG. 6 is a signaling interaction diagram of a control route optimization method provided by another embodiment of the present invention;

FIG. 7 is a signaling interaction diagram of a method for controlling route optimization provided by another embodiment of the present invention; FIG. 8 is a signaling interaction diagram of a control route optimization method provided by another embodiment of the present invention;

FIG. 9 is a signaling interaction diagram of a control route optimization method provided by another embodiment of the present invention;

Fig. 10 is a signaling interaction diagram of a control route optimization method provided by another embodiment of the present invention;

Fig. 11 is a schematic structural diagram of an information forwarding device provided by an embodiment of the present invention;

Fig. 12 is a schematic structural diagram of an information forwarding device provided by another embodiment of the present invention;

Fig. 13 is a schematic structural diagram of a routing control device provided by an embodiment of the present invention;

Fig. 14 is a schematic structural diagram of an information forwarding device provided by another embodiment of the present invention;

Fig. 15 is a schematic structural diagram of a routing control device provided by another embodiment of the present invention;

Fig. 16 is a schematic diagram of a control routing optimization system provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The embodiment of the present invention is applied to a distributed mobility management DDM network system, as shown in FIG. (Home Mobility Router, HMR for short), the current mobile router (Current Mobility Router, CMR for short) attached to the MN, and the CMR mobile router attached to the CN Consists of controller and location manager. The HLM of the MN is used to store and monitor the location information and status information of the MN. In addition, the HLM of the MN assigns a home address (Home of Address, ΗοΑ) to the MN, and the ΗοΑ is a session address for data routing; the HRM of the MN is responsible for intercepting data packet, and route the intercepted data packet to the MN. The DMM system uses the route optimization RO function to establish the RO channel between the CMR attached to the mobile node MN and the CMR attached to the correspondent node CN, wherein each RO channel corresponds to a HoA.

The present invention provides a method for controlling route optimization. Referring to FIG. 2, the method is used in a distributed mobility management DMM system. The DMM system uses the route optimization RO function to establish a CMR attached to a mobile node MN and a communication peer node. The RO channel between CN-attached CMRs consists of the following steps:

101. The first device acquires first routing control information.

Wherein, the first device is the HLM of the MN or the HRM of the MN, and the first routing control information is used to instruct to remove the RO channel; wherein, the first routing control information is provided by an operation management and maintenance platform (Operation Administration and Maintenance, referred to as OAM), a listening server , accounting server or other network elements. The first routing control information may be an event used to indicate the removal of the R0 channel, for example, lawful interception, service charging, and the like.

Specifically, if the parameters in the first routing control information are the same as the corresponding parameters in the routing optimization state information stored in the first device, the first routing control information is ignored, that is, the R0 channel is not controlled. That is, if the first device determines whether the route optimization state information indicates that the R0 channel has been removed after obtaining the first route control information. If the route optimization status information indicates that the R0 channel has been removed, the first device does not need to remove the R0 channel after receiving the first routing control information. If the route optimization state information indicates that the R0 channel is not removed, the first device removes the R0 channel after receiving the first routing control information. Further, the first device may report to the OAM, the listening server, the charging server, or other network elements that send the first routing control information that the R0 channel has been removed or whether the removal is successful.

If the parameters in the first route control information are different from the corresponding parameters in the route optimization state information stored in the first device, change the different parameters in the stored route optimization state information to be the same, and continue to control R0 . 102. The first device sends the first routing control information to the CMR attached to the MN or the CMR attached to the CN.

to remove the RO channel from the MN-attached CMR or the CN-attached CMR.

103. The CMR attached to the MN or the CMR attached to the CN receives the first routing control information sent by the first device.

Wherein, the first device is the HLM of the MN or the HMR of the MN, and the first routing control information is used to instruct to remove the RO channel.

104. The CMR attached to the MN or the CMR attached to the CN removes the RO channel according to the first routing control information.

In the above embodiment, the first device obtains the first routing control information, and the first device sends the first routing control information to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN is removed The RO channel. It can realize the teardown control of the routing optimization channel for distributed mobility management.

Optionally, as shown in FIG. 3, in the case where the RO channel is not established between the CMR attached to the MN and the CMR of the CN, before the RO channel is removed, the RO channel must first be established, and the method includes:

201. The first device acquires second routing control information.

The second routing control information is used to indicate the establishment of the RO channel; wherein, the second routing control information is sent by the OAM, listening server, charging server or other network elements.

Specifically, if the parameters in the second routing control information are the same as the corresponding parameters in the routing optimization state information stored in the first device, the second routing control information is ignored, that is, the RO is not controlled. If the parameters in the second routing control information are different from the corresponding parameters in the routing optimization state information stored in the first device, change the different parameters in the stored routing optimization state information to be the same, and continue to control the RO .

That is, if the first device determines whether the route optimization state information indicates that the RO channel has been removed after obtaining the second route control information. If the routing optimization status information indicates that the RO channel has been removed, the first device will establish the RO channel after receiving the first routing control information. If the routing optimization status information indicates that the RO channel has not been dismantled Otherwise, the first device does not need to establish an R0 channel after receiving the first routing control information. Further, the first device may report whether the R0 channel is successfully established to the OAM, the monitoring server, the charging server, or other network elements that send the first routing control information.

202. The first device sends the second routing control information to the CMR attached to the MN or the CMR attached to the CN.

To allow MN-attached CMRs or CN-attached CMRs to establish RO channels.

203. The CMR attached to the MN or the CMR attached to the CN receives the second routing control information sent by the first device.

The second routing control information is used to indicate the establishment of the RO channel;

204. The CMR attached to the MN or the CMR attached to the CN establishes the RO channel according to the second routing control information.

In the above embodiment, the first device acquires the second routing control information, and the first device sends the second routing control information to the MN-attached CMR or CN-attached CMR, so that the MN-attached CMR or the CN-attached CMR is established The RO channel. It can realize the establishment control of the routing optimization channel for distributed mobility management.

Optionally, an embodiment of the present invention provides a method for controlling route optimization, as shown in FIG. 4 (of course, only the key features in the first step are shown in the figure, and the description of the embodiment shall prevail), including The following steps:

301. The HLM of the MN acquires first/second routing control information at an Internet Protocol (Internet Protocol, IP for short) granularity.

Wherein, the first/second routing control information refers to the first routing control information or the second routing control information, which will not be repeated in the following embodiments.

Specifically, the parameters of the first routing control information at IP granularity include at least: the identity of the mobile device and the identity of the mobile node (Mobile Node Identity, MNID for short), where the MNID can identify the identity of the MN in the network; the status information of the MN (MN— Status), the status information of the MN includes establishing a route optimization channel between the CMR attached to the MN and the CMR attached to the CN (MN_Status_Open) or dismantling the route optimization channel between the CMR attached to the MN and the CMR attached to the CN ( MN—Status—Close); at least one MN’s home IP address HoAx, X represents the number of HoA; the status information of HoAx Information (HoAx-Status), the status information of HoAx includes removing the routing optimization channel corresponding to HoAx (HoAx-Status-Close).

The parameters of the second routing control information at IP granularity include at least: the identity of the mobile device and the identity of the mobile node (Mobile Node Identity, MNID for short), the MNID can identify the identity of the MN in the network; the status information of the MN (MN-Status), The status information of the MN includes establishing a route optimization channel (MN_Status_Open) between the CMR attached to the MN and the CMR attached to the CN or dismantling the route optimization channel between the CMR attached to the MN and the CMR attached to the CN (MN_Status_Open) — Close); At least one MN’s home IP address HoAx, X represents the number of HoA; HoAx status information (Ho Ax—Status), HoAx status information includes the establishment of a route optimization channel corresponding to HoAx (HoAx—Status—Open).

The first/second routing control information at IP granularity can control the routing optimization channel corresponding to the IP address (HoAx), where there is at least one IP address, that is, the first routing control information can control routing at multiple IP granularity Optimize channels.

Optionally, the parameters of the first/second routing control information may also include: an identity (Identity, ID for short) of the home mobile router, and the specific form of the ID is an IP address or a domain name system (Domain Name System, DNS for short). the domain name of the current mobile router; the ID of the current mobile router.

When the first/second routing control information is at the IP granularity, it is necessary to judge: MN's identifier MNID, MN status information, MN's hometown IP address HoAx and HoAx status information, and routing optimization status information stored in the MN's HLM Whether the corresponding parameters are consistent, and the inconsistent parameters are updated to be consistent, and if the parameters are consistent, the first routing control information is ignored, that is, the RO is not controlled.

302. The HLM of the MN sends the first/second routing control information to the CMR to which the MN is attached.

Optionally, the HLM of the MN may also send the first/second routing control information to the CMR attached to the MN through the HRM of the MN, which is indicated by a dotted arrow in the figure.

303. The CMR to which the MN is attached removes/establishes the RO channel according to the first/second routing control information. Wherein, removing/establishing the RO channel according to the first/second routing control information refers to: removing the RO channel according to the first routing control information, and establishing the RO channel according to the second routing control information, which will not be repeated in the following embodiments.

Wherein, the first/second routing control information may be control information at IP granularity, when the status information of the MN is MN_Status_Open, the status information of the HoAx is HoAx_Status_Open, representing the establishment of a routing optimization channel corresponding to the HoAx, The status information of HoAx is HoAx—Status—Close, which represents the removal of the routing optimization channel corresponding to HoAx; when the status information of the MN is MN—Status—Close, the status information of HoAx is HoAx—Status—Open, and the routing optimization channel cannot be established. That is, HoAx—Status—Open is an empty command, and the status information of HoAx is HoAx—Status—Close, which means that the routing optimization channel corresponding to HoAx is removed.

After the route optimization channel is established, the CN-attached CMR that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby realizing route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN and the CMR attached to the CN that cut off the route optimization channel cannot receive data from the CMR attached to the MN, and the data flowing from the CMR attached to the MN to the CMR attached to the CN will flow back The HMR of the MN is then transmitted to the CMR attached to the CN through the HMR of the MN, and the CMR attached to the CN transmits the data to the CN.

Optionally, a method for controlling route optimization is provided, as shown in FIG. 5, including the following steps:

401. The HLM of the MN acquires the first/second routing control information at the MN granularity. Wherein, the first/second routing control information refers to the first routing control information or the second routing control information.

Specifically, the parameters of the first routing control information at the MN granularity include at least: the identification MNID of the MN; the status information of the MN, and the status information of the MN includes: the routing optimization channel (MN_Status_Close) of the CMR to which the MN is attached.

The parameters of the first routing control information at the MN granularity include at least: the identifier MNID of the MN; the status information of the MN, and the status information of the MN includes: Establishing a route optimization channel (MN_Status_Open) of the CMR mobile device attached to the MN. The first routing control information at the MN granularity is to control all routing optimization channels of the specified mobile equipment.

Optionally, the parameters of the first/second routing control information may also include: the ID of the home mobile router, where the specific form of the ID is an IP address or a DNS domain name; the ID of the current mobile router.

When the first/second routing control information is at the MN granularity, it is necessary to judge: whether the identification MNID of the MN, the state information of the MN are consistent with the corresponding parameters in the routing optimization state information stored in the HLM of the MN, and update the inconsistent parameters Consistent, if the parameters are consistent, the first routing control information is ignored, that is, the RO is not controlled.

402. The HLM of the MN sends the first/second routing control information to the CMR to which the MN is attached.

Optionally, the HLM of the MN may also send the first/second routing control information to the CMR attached to the MN through the HRM of the MN, which is indicated by a dotted arrow in the figure.

403. The CMR to which the MN is attached removes/establishes the RO channel according to the first/second routing control information.

Wherein, removing/establishing the RO channel according to the first/second routing control information refers to: removing the RO channel according to the first routing control information, establishing the RO channel according to the second routing control information,

Since the first/second routing control information can be MN-granular control control, when the status information of the MN is MN_Status_Open, all HoAx (HoA 1 , ΗοΑ2 , ... , ΗοΑη ) corresponding to the MN are established. Route optimization channel. When the status information of MN is MN_Status_Close, all routing optimization channels corresponding to Ho Ax (HoA1, ΗοΑ2, ..., ΗοΑη) in the MN are removed. Wherein, the RO channels corresponding to all HoAx (HoA 1 , ΗοΑ2 , ... , ΗοΑη ) in the MN are all RO channels of the CMR to which the MN is attached.

404. After the RO is established or removed, the HLM of the MN sends the parameters in the first/second routing control information to other HLMs and HRMs of the MN.

So that other HLMs and HRMs of the MN update the stored route optimization state information according to the parameters in the first/second route control information. After the route optimization channel is established, the CN-attached CMR that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby realizing route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN and the CMR attached to the CN that cut off the route optimization channel cannot receive data from the CMR attached to the MN, and the data flowing from the CMR attached to the MN to the CMR attached to the CN will flow back The HMR of the MN is then transmitted to the CMR attached to the CN through the HMR of the MN, and the CMR attached to the CN transmits the data to the CN.

Optionally, a method for controlling route optimization is provided, as shown in FIG. 6, including the following steps:

501. The HRM of the MN obtains the first/second routing control information at the IP granularity.

The first/second routing control information at IP granularity is specifically described in step 301, and will not be repeated here.

When the first/second routing control information is at the IP granularity, it is necessary to judge: MN's identifier MNID, MN status information, MN's hometown IP address HoAx and HoAx status information, and routing optimization status information stored in the MN's HRM Whether the corresponding parameters are consistent, and the inconsistent parameters are updated to be consistent, and if the parameters are consistent, the first routing control information is ignored, that is, the RO is not controlled.

The HRM of the MN also needs to report the parameters in the first/second routing control information to the HLM of the MN, so that the HLM of the MN can update the stored routing optimization state information according to the parameters in the first/second routing control information.

502. The HRM of the MN sends the first/second routing control information to the CMR attached to the MN.

503. The CMR to which the MN is attached removes/establishes the RO channel according to the first/second routing control information.

Wherein, the specific manner of removing/establishing the RO channel of the first/second routing control information at the IP granularity is described in step 303, and will not be repeated here.

After the route optimization channel is established, the CN-attached CMR that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby realizing route optimization. Similarly, when the routing optimization channel is removed, the CMR attached to the MN The CN-attached CMR that cuts off the routing optimization channel cannot receive data from the MN-attached CMR, and the data flowing from the MN-attached CMR to the CN-attached CMR will flow back to the MN's HMR, and then be transmitted to the CN-attached CMR through the MN's HMR , the CMR attached to the CN transmits data to the CN.

Optionally, a method for controlling route optimization is provided, as shown in FIG. 7, including the following steps:

601. The HRM of the MN obtains the first/second routing control information at the MN granularity. Specifically, the first/second routing control information at the MN granularity is specifically described in step 401, and will not be repeated here.

When the first/second routing control information is at the MN granularity, it is necessary to judge: whether the identification MNID of the MN, the state information of the MN are consistent with the corresponding parameters in the routing optimization state information stored in the HLM of the MN, and update the inconsistent parameters Consistent, if the parameters are consistent, the first routing control information is ignored, that is, the RO is not controlled.

The HRM of the MN also needs to report the parameters in the first/second routing control information to the HLM of the MN, so that the HLM of the MN can update the stored routing optimization state information according to the parameters in the first/second routing control information.

602. The HRM of the MN sends the first/second routing control information to the CMR attached to the MN.

603. The CMR to which the MN is attached removes/establishes the RO channel according to the first/second routing control information.

Wherein, the specific manner of removing/establishing the RO channel of the first/second routing control information at the MN granularity is described in step 403, and will not be repeated here.

604. After the RO is established or removed, the HRM of the MN sends the parameters in the first/second routing control information to other HLMs and HRMs of the MN.

So that other HLMs and HRMs of the MN update the stored route optimization state information according to the parameters in the first/second route control information.

After the route optimization channel is established, the CN-attached CMR that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby realizing route optimization. Similarly, when the routing optimization channel is removed, the CMR attached to the MN The CN-attached CMR that cuts off the routing optimization channel cannot receive data from the MN-attached CMR, and the data flowing from the MN-attached CMR to the CN-attached CMR will flow back to the MN's HMR, and then be transmitted to the CN-attached CMR through the MN's HMR , the CMR attached to the CN transmits data to the CN.

Optionally, a method for controlling route optimization is provided, as shown in FIG. 8, including the following steps:

701. The HRM of the MN obtains the first/second routing control information at the IP granularity.

For the first/second routing control information at the IP granularity, refer to the specific description in step 301, and details will not be repeated here.

When the first/second routing control information is at the IP granularity, it is necessary to judge: MN's identifier MNID, MN status information, MN's hometown IP address HoAx and HoAx status information, and routing optimization status information stored in the MN's HRM Whether the corresponding parameters are consistent, and the inconsistent parameters are updated to be consistent, and if the parameters are consistent, the first routing control information is ignored, that is, the RO is not controlled.

The HRM of the MN also needs to report the parameters in the first/second routing control information to the HLM of the MN, so that the HLM of the MN can update the stored routing optimization state information according to the parameters in the first/second routing control information.

702. The HRM of the MN determines the HLM of the CN from the target address corresponding to the data packet sent by the MN.

703. The HRM of the MN acquires the address of the CMR attached to the CN from the HLM of the CN. In this way, the HRM of the MN obtains the address of the CMR to which the CN is attached.

704. The HRM of the MN sends the first/second routing control information to the CMR attached to the CN.

705. The CMR attached to the CN removes/establishes the RO channel according to the first/second routing control information.

Wherein, the specific manner of removing/establishing the RO channel of the first/second routing control information at the IP granularity is described in step 303, and will not be repeated here.

When the route optimization channel is established, the CMR attached to the CN that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, from And achieve route optimization. Similarly, when the route optimization channel is removed, neither the CMR attached to the MN nor the CMR attached to the CN that cut off the route optimization channel can receive data from the CMR attached to the MN, and the data flowing from the CMR attached to the MN to the CMR attached to the CN will flow back The HMR of the MN is then transmitted to the CMR attached to the CN through the HMR of the MN, and the CMR attached to the CN transmits the data to the CN.

Optionally, a method for controlling route optimization is provided, as shown in FIG. 9, including the following steps:

801. The HLM of the MN obtains the first/second routing control information at the IP granularity.

For the first/second routing control information at the IP granularity, refer to the specific description in step 301, and details will not be repeated here.

When the first/second routing control information is at the IP granularity, it is necessary to judge: MN's identifier MNID, MN status information, MN's hometown IP address HoAx and HoAx status information, and routing optimization status information stored in the MN's HRM Whether the corresponding parameters are consistent, and the inconsistent parameters are updated to be consistent, and if the parameters are consistent, the first routing control information is ignored, that is, the RO is not controlled.

The HRM of the MN also needs to report the parameters in the first/second routing control information to the HLM of the MN, so that the HLM of the MN can update the stored routing optimization state information according to the parameters in the first/second routing control information.

802. The HLM of the MN sends the first/second routing control information to the HRM of the MN.

803. The HRM of the MN determines the HLM of the CN from the target address corresponding to the data packet sent by the MN.

804. The HRM of the MN acquires the address of the CMR attached to the CN from the HLM of the CN. In this way, the HRM of the MN obtains the address of the CMR to which the CN is attached.

805. The HRM of the MN sends the first/second routing control information to the CMR attached to the CN.

806. The CMR attached to the CN removes/establishes the RO channel according to the first/second routing control information.

Among them, the first/second routing control information of IP granularity is removed/established RO channel The specific manner is described in step 303, and will not be repeated here.

After the route optimization channel is established, the CN-attached CMR that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby realizing route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN and the CMR attached to the CN that cut off the route optimization channel cannot receive data from the CMR attached to the MN, and the data flowing from the CMR attached to the MN to the CMR attached to the CN will flow back The HMR of the MN is then transmitted to the CMR attached to the CN through the HMR of the MN, and the CMR attached to the CN transmits the data to the CN.

Optionally, a method for controlling route optimization is provided, as shown in FIG. 10, including the following steps:

901. The HLM of the MN obtains the first/second routing control information at the IP granularity.

For the first/second routing control information at the IP granularity, refer to the specific description in step 301, and details will not be repeated here.

When the first/second routing control information is at the IP granularity, it is necessary to judge: MN's identifier MNID, MN status information, MN's hometown IP address HoAx and HoAx status information, and routing optimization status information stored in the MN's HRM Whether the corresponding parameters are consistent, and the inconsistent parameters are updated to be consistent, and if the parameters are consistent, the first routing control information is ignored, that is, the RO is not controlled.

The HRM of the MN also needs to report the parameters in the first/second routing control information to the HLM of the MN, so that the HLM of the MN can update the stored routing optimization state information according to the parameters in the first/second routing control information.

902. The HRM of the MN determines the HLM of the CN from the target address corresponding to the data packet sent by the MN.

903. The HRM of the MN acquires the address of the CMR attached to the CN from the HLM of the CN.

904. The HRM of the MN sends the address of the CMR to which the CN is attached to the HLM of the MN. In this way, the HLM of the MN obtains the address of the CMR to which the CN is attached.

905. The HLM of the MN sends the first/second routing control information to the CMR attached to the CN.

906. The CMR attached to the CN is removed according to the first/second routing control information/ Create RO channel.

Wherein, the specific manner of removing/establishing the RO channel of the first/second routing control information at the IP granularity is described in step 303, and will not be repeated here.

After the route optimization channel is established, the CN-attached CMR that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby realizing route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN and the CMR attached to the CN that cut off the route optimization channel cannot receive data from the CMR attached to the MN, and the data flowing from the CMR attached to the MN to the CMR attached to the CN will flow back The HMR of the MN is then transmitted to the CMR attached to the CN through the HMR of the MN, and the CMR attached to the CN transmits the data to the CN.

As described above, the first device obtains the first or second routing control information, and the first device sends the first or second routing control information to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN CN-attached CMRs dismantle or establish the RO channel. It can realize the control of the routing optimization channel of the distributed mobility management.

The present invention provides an information forwarding device 1000, as shown in FIG. 11, the information forwarding device 1000 is used in a distributed mobility management DMM system, and the DMM system uses the route optimization RO function to establish the CMR and communication pair attached to the mobile node MN. An RO channel between CMRs attached to end nodes CN, wherein the information forwarding apparatus 1000 is the HLM of the MN or the HMR of the MN, and the information forwarding apparatus 1000 includes: a receiving unit 1001, configured to obtain a first routing control information, the first routing control information is used to indicate to remove the RO channel.

Or, in the case that no RO channel is established between the CMR to which the MN is attached and the CMR of the CN, the receiving unit 1001 is also used to:

Obtain second routing control information, where the second routing control information is used to instruct the establishment of an RO channel.

Wherein, the first/second routing control information is sent by OAM or monitoring server, charging server or other network elements.

Specifically, if the parameters in the first/second route control information are the same as the corresponding parameters in the route optimization state information stored in the information forwarding device 1000, then ignore the first/second route control information. The second routing control information is not to control the RO.

If the parameters in the first/second route control information are different from the corresponding parameters in the route optimization state information stored in the information forwarding device 1000, change the different parameters in the stored route optimization state information to be the same, and continue RO is controlled.

Further, including:

The sending unit 1002 is configured to send the first routing control information received by the receiving unit 1001 to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN removes the RO channel.

Or, in the case that no RO channel is established between the CMR attached by the MN and the CMR of the CN, the sending unit 1002 is also used to:

Send the second routing control information received by the receiving unit 1001 to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN establishes an RO channel.

When the information forwarding device 1000 is the HLM of the MN, the first/second routing control information may also be sent to the CMR attached to the MN or the CMR attached to the CN through the HRM of the MN.

Optionally, as shown in FIG. 12, the information forwarding device 1000 further includes: a search unit 1003, configured to determine the HLM of the CN from the target address corresponding to the data packet sent by the MN.

The obtaining unit 1004 is configured to obtain the address of the CMR to which the CN is attached from the HLM of the CN determined by the searching unit 1003.

When the information forwarding device 1000 is the HRM of the MN, the HRM of the MN may also send the address of the CMR to which the CN is attached to the HLM of the MN.

After the route optimization channel is established, the CN-attached CMR that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby realizing route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN and the CMR attached to the CN that cut off the route optimization channel cannot receive data from the CMR attached to the MN, and the data flowing from the CMR attached to the MN to the CMR attached to the CN will flow back The HMR of the MN is transmitted to the CMR attached to the CN through the HMR of the MN, and the CN The attached CMR transmits data to the CN.

In the above information forwarding device, the first/second routing control information is obtained, and the first/second routing control information is sent to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN Remove/establish the RO channel. It can realize the control of the routing optimization channel of the distributed mobility management.

The present invention provides a routing control device 1100, as shown in FIG. 13, the information forwarding device 1100 is used in a distributed mobility management DMM system, and the DMM system uses the routing optimization RO function to establish the CMR and communication of the mobile node MN attachment. The RO channel between the CMRs attached to the CN of the peer node, wherein the routing control device is the CMR attached to the MN or the CMR attached to the CN, and the routing control device 1 100 includes:

The receiving unit 1 101 is configured to receive the first routing control information sent by the information forwarding device 1 100. The information forwarding device is the home location manager HLM of the MN or the home mobile router HMR of the MN, and the first routing control information is used to instruct the removal of the RO aisle.

Or, in the case that no RO channel is established between the CMR to which the MN is attached and the CMR of the CN, the receiving unit 1 101 is also used to:

The second routing control information sent by the information forwarding device is received, where the second routing control information is used to indicate the establishment of the RO channel.

Further, the processing unit 1102 is configured to remove the RO channel according to the first routing control information received by the receiving unit 1101.

Or, in the case that no RO channel is established between the CMR to which the MN is attached and the CMR of the CN, the processing unit 1 102 is also used to:

The RO channel is established according to the second routing control information received by the receiving unit 1101.

After the route optimization channel is established, the CN-attached CMR that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby realizing route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN and the CMR attached to the CN that cut off the route optimization channel cannot receive data from the CMR attached to the MN, and the data flowing through the CMR attached to the MN to the CMR attached to the CN will flow The data is sent back to the HMR of the MN, and then transmitted to the CMR attached to the CN through the HMR of the MN, and the CMR attached to the CN transmits the data to the CN.

In the above routing control device, the CMR attached to the MN or the CMR attached to the CN receives the first/second routing control information sent by the information forwarding device, and the CMR attached to the MN or the CMR attached to the CN removes/ Establish the RO channel. It can realize the control of the routing optimization channel of the distributed mobility management. An embodiment of the present invention provides an information forwarding device 1200, as shown in FIG. The RO channel between the CMRs attached to the CN of the peer node, wherein the routing control device is the CMR attached to the MN or the CMR attached to the CN, and the routing control device 1200 includes: a processor 1201, a receiver 1202 , a transmitter 1203, a memory 1204, and a bus 1205, wherein the processor 1201, the receiver 1202, and the transmitter 1203 are connected through the bus 1205, and the memory 1204 is used to store data processed by the processor.

The bus 1205 may be an ISA (Industry Standard Architecture, industry standard architecture) bus, a PCI (Peripheral Component, external device interconnection) bus, or an EISA (Extended Industry Standard Architecture, extended industry standard architecture) bus, etc. The bus 1205 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 14, but it does not mean that there is only one bus or one type of bus. Other towels:

The memory 1204 is used to store executable program codes, and the program codes include computer operation instructions. The memory 1204 may include a high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.

The processor 1201 may be a central processing unit (Central Processing Unit, referred to as CPU), or a specific integrated circuit (Application Specific Integrated Circuit, referred to as ASIC), or configured to implement one or more of the embodiments of the present invention integrated circuit.

The receiver 1202 is configured to acquire first routing control information, where the first routing control information is used to instruct to remove the RO channel.

Or, in the case that no RO channel is established between the CMR to which the MN is attached and the CMR of the CN, the receiver 1202 is also used to: Acquiring second routing control information, where the second routing control information is used to indicate the establishment of

RO channel.

Wherein, the first/second routing control information is sent by OAM or monitoring server, charging server or other network elements.

Specifically, if the parameters in the first/second routing control information are the same as the corresponding parameters in the routing optimization state information stored in the information forwarding device 1200, the first/second routing control information is ignored, that is, the RO is not controlled.

If the parameters in the first/second route control information are different from the corresponding parameters in the route optimization state information stored in the information forwarding device 1200, change the different parameters in the stored route optimization state information to be the same, and continue RO is controlled.

Further, include:

The sender 1203 is configured to send the received first routing control information to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN removes the RO channel.

Or, in the case that no RO channel is established between the CMR attached by the MN and the CMR of the CN, the transmitter 1203 is also used to:

Send the second routing control information received by the receiver 1202 to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN establishes an RO channel.

When the information forwarding device 1200 is the HLM of the MN, the first/second routing control information may also be sent to the CMR attached to the MN or the CMR attached to the CN through the HRM of the MN.

Optionally, the processor 1201 of the information forwarding device 1200 is used to:

The destination address corresponding to the data packet sent from the MN determines the HLM of the CN.

It is also used for: obtaining the address of the CMR to which the CN is attached from the HLM of the determined CN. When the information forwarding device 1200 is the HRM of the MN, the HRM of the MN may also send the address of the CMR to which the CN is attached to the HLM of the MN.

When the route optimization channel is established, the CMR attached to the CN that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, from And achieve route optimization. Similarly, when the route optimization channel is removed, neither the CMR attached to the MN nor the CMR attached to the CN that cut off the route optimization channel can receive data from the CMR attached to the MN, and the data flowing from the CMR attached to the MN to the CMR attached to the CN will flow back The HMR of the MN is then transmitted to the CMR attached to the CN through the HMR of the MN, and the CMR attached to the CN transmits the data to the CN.

In the above information forwarding device, the first/second routing control information is obtained, and the first/second routing control information is sent to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN Remove/establish the RO channel. It can realize the control of the routing optimization channel of the distributed mobility management.

The present invention provides a routing control device 1300, as shown in FIG. 15, the routing control device 1300 is used in a distributed mobility management DMM system, and the DMM system uses the routing optimization RO function to establish the CMR attached to the mobile node MN and the communication peer An RO channel between CMRs attached to nodes CN, wherein the routing control device 1300 is the CMR attached to the MN or the CMR attached to the CN, and the routing control device 1300 includes: a processor 1301, a receiver 1302, The transmitter 1303, the memory 1304 and the bus 1305, wherein the processor 1301, the receiver 1302, and the transmitter 1303 are connected through the bus 1305, and the memory 1304 is used to store data processed by the processor.

The bus 1305 may be an ISA (Industry Standard Architecture, industry standard architecture) bus, a PCI (Peripheral Component, external device interconnection) bus, or an EISA (Extended Industry Standard Architecture, extended industry standard architecture) bus, etc. The bus 1305 can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in Figure 15, but it does not mean that there is only one bus or one type of bus. in:

The memory 1304 is used to store executable program codes including computer operation instructions. The memory 1304 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

The processor 1301 may be a central processing unit (Central Processing Unit, referred to as CPU), or a specific integrated circuit (Application Specific Integrated Circuit, referred to as ASIC), or a The receiver 1302 is used to receive the first routing control information sent by the information forwarding device, the information forwarding device is the MN's home location manager HLM or the MN's home mobile router HMR, and the first routing control information is used to indicate the removal of the RO channel.

Or, in the case that no RO channel is established between the CMR to which the MN is attached and the CMR of the CN, the receiver 1302 is also used for:

The second routing control information sent by the information forwarding device is received, where the second routing control information is used to indicate the establishment of the RO channel.

Further, the processor 1301 is configured to remove the RO channel according to the first routing control information received by the receiver 1302.

Or, in the case that no RO channel is established between the CMR to which the MN is attached and the CMR of the CN, the processor 1301 is further configured to:

The RO channel is established according to the second routing control information received by the receiver 1302.

After the route optimization channel is established, the CN-attached CMR that establishes the route optimization channel with the CMR attached to the MN can receive the data sent by the CMR attached to the MN, thereby realizing route optimization. Similarly, when the route optimization channel is removed, the CMR attached to the MN and the CMR attached to the CN that cut off the route optimization channel cannot receive data from the CMR attached to the MN, and the data flowing from the CMR attached to the MN to the CMR attached to the CN will flow back The HMR of the MN is then transmitted to the CMR attached to the CN through the HMR of the MN, and the CMR attached to the CN transmits the data to the CN.

In the above routing control device, the CMR attached to the MN or the CMR attached to the CN receives the first/second routing control information sent by the information forwarding device, and the CMR attached to the MN or the CMR attached to the CN removes/ Establish the RO channel. It can realize the control of the routing optimization channel of the distributed mobility management.

The present invention provides a system 1400 for controlling route optimization. The system for controlling route optimization may be a distributed mobility management DDM network system. For specific functions, refer to the description of the above-mentioned device and method embodiments, as shown in FIG. 16 , include:

At least one information forwarding device (1401-1, ..., 1401-n) and at least one routing control device (1402-1, ... ... , 1402-η), the information forwarding device and the routing control device can perform information interaction;

Among them, the information forwarding device (1401-1, ..., 1401-η) is the information forwarding device 1000 corresponding to Figure 11 and Figure 12, and the routing control device (1402-1, ..., 1402-η) is FIG. 13 corresponds to the current mobile router 1100 .

Or the information forwarding device (1401-1, ..., 1401-η) is the information forwarding device 1200 corresponding to Figure 14, and the routing control device (1402-1, ..., 1402-η) is the corresponding Current mobile router 1300.

Wherein, each routing control device (1402-1, ..., 1402-η) is correspondingly connected to a mobile device to realize information exchange between mobile devices, and the specific functions of each device in the system can be implemented by referring to the above-mentioned method and device. An example mobile device is a mobile node or a peer mobile node (not shown in the figure).

In the above system, the information forwarding device obtains the first routing control information, the routing control device receives the first/second routing control information sent by the information forwarding device, and the routing control device removes/establishes the R according to the first/second routing control information. 0 channels. It can realize the control of the routing optimization channel of the distributed mobility management.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by hardware, firmware, or a combination thereof. When implemented by software, the above functions may be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Take this as an example but not limited to: computer-readable media may include RAM (Random Access Memory, Random Access Memory), ROM (Read Only Memory, Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory, Electrically Erasable Programmable Only Memory, read-only memory devices), CD-ROM (Compact Disc Read Only Memory, ie CD-ROM) or other optical disk storage, magnetic disk storage medium or other magnetic storage devices, or can be used to carry or store instructions or data structures desired program code and can be programmed by the any other media that can be accessed by a computer. also. Any connection can suitably be a computer-readable medium. For example, if the software is running over coaxial cable, fiber optic cable, twisted pair,

DSL (Digital Subscriber Line, Digital Subscriber Line) or wireless technologies such as infrared, radio, and microwave transmitted from a website, server, or other remote source, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, Wireless technologies such as wireless and microwave are included in the fixation of the medium. Discs and discs as used in the present invention include CD (Compact Disc, compact disc), laser disc, optical disc, DVD disc (Digital Versatile Disc, digital versatile optical disc), floppy disc and Blu-ray disc, where discs usually reproduce data magnetically, and Discs use lasers to optically reproduce data. Combinations of the above should also be included within the scope of computer-readable media.

The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (11)

Claims 1. A method for controlling route optimization, characterized in that, the method is used in a distributed mobility management DMM system, and the DMM system uses a route optimization RO function to establish a CMR attached to a mobile node MN and a corresponding communication node CN an RO channel between attached CMRs, the method comprising: The first device obtains first routing control information, the first device is the home location manager HLM of the MN or the home mobile router HMR of the MN, and the first routing control information is used to instruct to remove the RO channel ; The first device sends the first routing control information to the MN-attached CMR or the CN-attached CMR, so that the MN-attached CMR or the CN-attached CMR removes the RO channel. 2. The method according to claim 1, wherein in the case where the RO channel is not established between the CMR to which the MN is attached and the CMR of the CN, the method further comprises: The first device acquires second routing control information, where the second routing control information is used to indicate establishment of the RO channel; The first device sends the second routing control information to the MN-attached CMR or the CN-attached CMR, so that the MN-attached CMR or the CN-attached CMR establishes the RO channel. 3. The method according to any one of claims 1 or 2, characterized in that, the method further comprises: The first device determines the HLM of the CN from the target address corresponding to the data packet sent by the MN. 4. The method according to claim 3, further comprising: the first device obtaining the address of the CMR attached to the CN from the HLM of the CN. 5. A method for controlling route optimization, wherein the method is used in a distributed mobility management DMM system, and the DMM system uses a route optimization RO function to establish a communication pair between the current mobile router CMR attached to the mobile node MN and end node CN RO channels between attached CMRs, including: The CMR attached to the MN or the CMR attached to the CN receives the first routing control information sent by the first device, the first device is the home location manager HLM of the MN or the home mobile router HMR of the MN, The first routing control information is used to instruct to remove the RO channel; The CMR attached to the MN or the CMR attached to the CN removes the RO channel according to the first routing control information. 6. The method according to claim 5, wherein in the case where the RO channel is not established between the CMR to which the MN is attached and the CMR of the CN, the method further comprises: The CMR attached to the MN or the CMR attached to the CN receives second routing control information sent by the first device, where the second routing control information is used to indicate establishment of the RO channel; The CMR attached to the MN or the CMR attached to the CN establishes the RO channel according to the second routing control information. 7. An information forwarding device, characterized in that the information forwarding device is used in a distributed mobility management DMM system, and the DMM system uses a route optimization RO function to establish a CMR attached to a mobile node MN and a corresponding communication node CN An RO channel between attached CMRs, wherein the information forwarding device is the home location manager HLM of the MN or the home mobile router HMR of the MN, and the device includes: a receiving unit configured to obtain a first route Control information, where the first routing control information is used to indicate to remove the RO channel; a sending unit, configured to send the first routing control information received by the receiving unit to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN removes all Said RO channel. 8. The device according to claim 7, wherein when the RO channel is not established between the CMR to which the MN is attached and the CMR of the CN, the receiving unit of the device is further configured to: Acquire second route control information, where the second route control information is used to instruct the establishment of the Said RO channel; The sending unit of the device is also used for: sending the second routing control information received by the receiving unit to the CMR attached to the MN or the CMR attached to the CN, so that the CMR attached to the MN or the CMR attached to the CN establishes the RO channel. 9. The device according to any one of claims 7 or 8, characterized in that the device further comprises: The search unit is configured to determine the HLM of the CN from the target address corresponding to the data packet sent by the MN. 10. The device according to claim 9, further comprising: an obtaining unit, configured to obtain the address of the CMR to which the CN is attached from the HLM of the CN determined by the searching unit. 11. A routing control device, characterized in that the routing control device is used in a distributed mobility management DMM system, and the DMM system uses a route optimization RO function to establish a communication pair between the current mobile router CMR attached to the mobile node MN and An RO channel between CMRs attached to end nodes CN, wherein the routing control device is the CMR attached to the MN or the CMR attached to the CN, and the routing control device includes: The receiving unit is configured to receive the first routing control information sent by the information forwarding device, the information forwarding device is the home location manager HLM of the MN or the home mobile router HMR of the MN, and the first routing control information is used to instruct removal of said RO channel; A processing unit, configured to remove the RO channel according to the first routing control information received by the receiving unit. 12. The device according to claim 11, wherein when the RO channel is not established between the CMR to which the MN is attached and the CMR of the CN, the receiving unit of the device is further configured to : receiving second routing control information sent by the information forwarding device, where the second routing control information is used to indicate the establishment of the RO channel; The processing unit of the device is also used to: Establishing the RO channel according to the second routing control information received by the receiving unit. 13. A system for controlling route optimization, comprising: At least one information forwarding device and at least one routing control device, the information forwarding device and the routing control device can perform information interaction; Wherein, the information forwarding device is the information forwarding device described in any one of claims 6-10, and the routing control device is the routing control device described in any one of claims 11 or 12.