CN107333338B - Dynamic bearer policy control method, device and communication network based on LIPA - Google Patents
Dynamic bearer policy control method, device and communication network based on LIPA Download PDFInfo
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- CN107333338B CN107333338B CN201610284425.9A CN201610284425A CN107333338B CN 107333338 B CN107333338 B CN 107333338B CN 201610284425 A CN201610284425 A CN 201610284425A CN 107333338 B CN107333338 B CN 107333338B
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Abstract
The invention discloses a dynamic bearer policy control method, a device and a communication network based on LIPA connection, relating to the technical field of communication, wherein the method comprises the following steps: the eNB sends a first bearer connection channel request message to the MME; and the eNB sends a second bearer connection channel request message to the MME, establishes a second bearer connection between the eNB and a packet data gateway (PGW), receives the Qos control parameter issued by the PCRF, and configures the parameters of the user terminal UE based on the Qos control parameter. According to the establishment method, the establishment device and the communication network, the eNB is established through the secondary bearer channel, the bearer connection is respectively established with the LGW and the PGW, and the Qos policy control parameters issued by the PCRF in real time are transmitted through the signaling bearer control signaling connection channel among the eNB, the PGW and the PCRF, so that the Qos dynamic adjustment control on the LIPA user is realized, and the method, the device and the communication network are suitable for realizing the dynamic policy control of local offload.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a communication network for controlling a dynamic bearer policy based on LIPA connection.
Background
LIPA (Local IP Access, Local offload Access or Local IP Access) enables a user UE to directly Access (offload) to a home network and an enterprise network (legacy/enterprise IP network) through a HeNB (base station). Currently, 3GPP analyzes and studies LIPA technology in TR23.829, and proposes a technical solution, and in the published technical material, when a network performs LIPA, Qos control is generally performed in a HeNB (LGW) by using a static policy, which is mainly because a Gx interface is not yet deployed in the HeNB-LGW for interworking with a PCRF. Therefore, deployment of the LIPA method in the LTE industrial park urgently needs to perform Qos control on the bearer access of the UE user using local offload access based on factors such as dynamic load and base station user capacity on the henb (lgw) under the existing PCC architecture.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method, an apparatus and a communication network for controlling a dynamic bearer policy based on LIPA connection.
According to an aspect of the present invention, a method for controlling a dynamic bearer policy based on local IP access LIPA connection is provided, which includes: an evolved node B eNB sends a first bearer connection channel request message to a mobile management entity MME, and establishes a first bearer connection between the eNB and a local gateway LGW; the eNB sends a second bearer connection channel request message to the MME, establishes a second bearer connection between the eNB and a packet data gateway (PGW), and receives a Qos control parameter issued by a Policy and Charging Rules Function (PCRF); and the eNB associates the first bearer connection with the second bearer connection and configures parameters of the User Equipment (UE) based on the Qos control parameters.
Optionally, the sending, by the eNB, the first bearer connection channel request message to the MME, and the establishing of the first bearer connection between the eNB and the local gateway LGW includes: the eNB sends a first Initial UE message request message to the MME, wherein a GW Transport Layer Address parameter in the first Initial UE message request message carries address information of the LGW; and the eNB receives first PDN bearer channel information returned by the MME, and acquires an uplink TEID (traffic engineering identifier) distributed to the LGW by the MME carried in the first PDN bearer channel information.
Optionally, the MME receives the first Initial UE message request message, and acquires the APN of the UE from a home subscriber server HSS; the MME judges whether a GWTransport Layer Adress parameter of the first Initial UE message request message is empty or not; and if not, the MME initiates a bearer creation request to a Serving Gateway (SGW).
Optionally, the sending, by the eNB, the second bearer connection channel request to the MME and establishing the second bearer connection between the eNB and the packet data gateway PGW includes: the eNB sends a second Initial UE message request message to the MME, wherein a GW Transport Layer address parameter of the second Initial UE message request message is set to be null, and an estabilishment cause parameter of the second Initial UE message is set to be virualdataaccess; and the eNB receives second PDN bearer channel information returned by the MME, and acquires an uplink TEID distributed to the PGW by the MME and a Qos control parameter distributed by the PCRF.
Optionally, the MME receives the second Initial UE message request message, and determines whether an S-TMSI parameter value in the second Initial UE message request message is the same as an S-TMSI parameter value of the first Initial UE message request message; if yes, judging whether a GW Transport Layer address parameter in the second Initial UE message request message is empty; if yes, judging whether the value of the establistensionCause parameter in the second Initial UE message request message is set to the virtual data access, if yes, the MME sends a request for establishing the PDN bearing connection channel to the SGW.
Optionally, the SGW and the PGW establish a loop back channel; and the SGW sends a Createbear Request message to the PWG, wherein a Selection Mode parameter in the Createbear Request message is set as a preset parameter value.
Optionally, the PGW determines whether a Selection Mode parameter in the Create Bear Request message is set to a predetermined parameter value, and if so, the PGW requests Qos control policy and charging rule information from the PCRF; and the PGW sends a Create Bear Response message to the SGW, and carries downlink TEID, Qos control parameters and charging rule information.
Optionally, the associating, by the eNB, the first bearer connection with the second bearer connection includes: and the eNB associates the first bearer connection with the second bearer connection according to the UE S1AP ID, the uplink TEID and the downlink TEID, and maps the Qos control parameter in a parameter related to Qos in the first PDN bearer channel information.
Optionally, configuring the connection parameters of the UE based on the Qos control parameters includes: and the eNB initiates RRC connection configuration reset to the UE according to the parameters related to the Qos in the first PDN bearer channel information, and configures wireless air interface Qos parameters.
According to another aspect of the present invention, there is provided an evolved nodeb, eNB, comprising: a first connection establishing module, configured to send a first bearer connection channel request message to a mobility management entity MME, and establish a first bearer connection between the eNB and a local gateway LGW; a second connection establishing module, configured to send a second bearer connection channel request message to the MME, establish a second bearer connection between the eNB and a packet data gateway PGW, and receive a Qos control parameter delivered by a policy and charging rules function unit PCRF; and a parameter configuration module, configured to associate the first bearer connection with the second bearer connection, and configure a parameter of a user equipment UE based on the Qos control parameter.
Optionally, the first connection establishing module sends a first Initial UE message request message to the MME, where a GW Transport Layer address parameter in the first Initial UE message request message carries address information of the LGW; and the first connection establishing module receives first PDN bearer channel information returned by the MME, and acquires an uplink TEID (traffic engineering identifier) distributed to the LGW by the MME carried in the first PDN bearer channel information.
Optionally, the second connection establishing module sends a second Initial UE message request message to the MME, where a GW Transport Layer address parameter of the second Initial UE message request message is set to null, and an establlish cause parameter of the second Initial UE message is set to virualdataaccess; and the second connection establishing module receives second PDN bearer channel information returned by the MME, and acquires an uplink TEID distributed to the PGW by the MME and a Qos control parameter distributed by the PCRF.
Optionally, the parameter configuration module is specifically configured to associate the first bearer connection with the second bearer connection according to the UE S1AP ID, the uplink TEID, and the downlink TEID, and map the Qos control parameter in a parameter related to Qos in the first PDN bearer channel information.
Optionally, the parameter configuration module initiates RRC connection configuration reset to the UE according to the parameter related to Qos in the first PDN bearer channel information, and configures a wireless air interface Qos parameter.
According to yet another aspect of the present invention, there is provided a mobility management entity MME comprising: the first resource management module is used for receiving a first bearer connection channel request message sent by an eNB and returning first PDN bearer channel information to the eNB; wherein the eNB establishes a first bearer connection with a local gateway LGW based on the first PDN bearer channel information; a second resource management module, configured to receive a second bearer connection channel request message sent by the eNB, and return second PDN bearer channel information to the eNB; and the eNB establishes a second bearer connection with a packet data gateway (PGW) based on the second PDN bearer channel information and receives a Qos control parameter issued by the PCRF.
Optionally, the first resource management module sets an uplink TEID allocated to the LGW in the first PDN bearer channel information.
Optionally, the first resource management module is specifically configured to receive the first Initial UE message request message, and acquire an APN of the UE from a home subscriber server HSS; the first resource management module judges whether a GW Transport Layer address parameter of the first Initial UE message request message is empty; and if not, the MME initiates a bearer creation request to a Serving Gateway (SGW).
Optionally, the second resource management module sets, in the second PDN bearer channel information, an uplink TEID allocated to the PGW and a Qos control parameter allocated to the PCRF.
Optionally, the second resource management module is further configured to receive the second Initial UE message request message, and determine whether an S-TMSI parameter value in the second Initial UE message request message is the same as an S-TMSI parameter value in the first Initial UE message request message; if yes, judging whether a GW Transport Layer address parameter in the second Initial UEmessage request message is empty; if yes, judging whether the estabilishment cause parameter in the second Initial UE message request message is set to be the virualdataaccess or not, and if yes, sending a PDN bearer connection channel establishment request to the SGW.
According to yet another aspect of the present invention, there is provided a communication network comprising: eNB as described above, MME as described above.
According to the dynamic bearer policy control method, device and communication network based on LIPA connection, the eNB establishes bearer connection with the LGW and the PGW respectively through the secondary bearer channel, the eNB realizes the association of the two bearer channel logical links, and realizes the transmission of Qos policy control parameters issued by the PCRF in real time through the signaling bearer control signaling connection channel among the eNB, the PGW and the PCRF, so that the eNB realizes the Qos dynamic adjustment control function of distributing wireless air interfaces, LGW bearer layers and the like of LIPA users locally, no additional link is interacted with users, no change is needed to be carried out on a network architecture, and the method and device are suitable for realizing the dynamic policy control of local distribution.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of an embodiment of a method for controlling a dynamic bearer policy based on LIPA connection according to the present invention;
fig. 2 is a signaling flow diagram illustrating an embodiment of a method for controlling a dynamic bearer policy based on LIPA connection according to the present invention;
fig. 3 is a flowchart illustrating an eNB determination according to an embodiment of the method for controlling a dynamic bearer policy based on LIPA connection according to the present invention;
fig. 4 is a flowchart illustrating MME determination according to an embodiment of a method for controlling dynamic bearer policy based on LIPA connection according to the present invention;
fig. 5 is a flowchart illustrating a PGW determination process according to an embodiment of the method for controlling a dynamic bearer policy based on LIPA connectivity;
FIG. 6 is a block diagram of an embodiment of an eNB in accordance with the present invention;
fig. 7 is a block diagram of an embodiment of an MME according to the present invention.
Detailed Description
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The technical solution of the present invention is described in various aspects below with reference to various figures and embodiments.
The terms "first", "second", and the like are used hereinafter for descriptive distinction and not for other specific meanings.
Fig. 1 is a flowchart of an embodiment of a method for controlling a dynamic bearer policy based on LIPA connection according to the present invention, as shown in fig. 1:
And 103, associating the first bearer connection with the second bearer connection by the eNB, and configuring parameters of the user equipment UE based on the Qos control parameters.
The method for controlling dynamic bearer policy based on LIPA connection in the above embodiment provides a method for controlling dynamic bearer policy based on LTE local breakout, which is used for implementing PCC policy control for LIPA local breakout, where an eNB establishes bearer connections with an LGW and a PGW through a secondary bearer channel, and the eNB implements association of two bearer channel logical links, so as to implement Qos policy control parameters delivered by a PCRF in real time through a signaling bearer control signaling connection channel between the eNB, the PGW, and the PCRF, and implement a Qos dynamic adjustment control function of the eNB on a wireless air interface, an LGW bearer layer, and the like of a local breakout LIPA user.
In an embodiment, after receiving a LIPA-based data connection request sent by a UE terminal, an eNB initiates a UE bearer connection path request to an MME for the first time according to a specified requirement for LIPA bearer connection in 3GPP, and establishes a normal LIPA PDN connection path. The eNB initiates a UE bearer connection channel request of the same APN to the MME for the second time under the current connection; and the MME selects a local PGW to establish an LOOPBACK virtual connection channel according to the RCC estimationCause parameter indication in the second UE bearing connection channel request.
And the local PGW initiates IP CAN connection based on the LIPA APN user to the PCRF, and acquires an APN Qos control strategy scheme of the PCRF for the LIPA user. The MME returns a response message of the second bearer connection request to the eNB, where the response message includes a PGW uplink Tunnel TEID (Tunnel Endpoint ID, Tunnel Endpoint identifier) and a Qos parameter corresponding to the LIPA user. And the eNB correlates the first UE bearing connection response message and the second UE bearing connection response message, and maps the Qos control parameter of the second PDN context connection response to the Qos control parameter of the first PDN context connection response message.
And sending a PDN context connection response parameter to the mapped first MME, initiating RRC connection configuration reset to the UE, and configuring related wireless air interface Qos strategy control parameters. QoS quality guarantee based on PCRF control is realized.
The method for establishing the LIPA connection based on the LTE in the above embodiment does not need to add a Gx interface, and does not need to build a Policy and Charging Enforcement Function (PCEF) Function, and establishes a Qos Policy channel with the PCRF only through a virtual PDN (Public data network) connection by using an existing interworking interface protocol, so as to implement Qos guarantee for locally offloading LIPA users by the eNB.
Fig. 2 is a signaling flow diagram of an embodiment of a method for controlling a dynamic bearer policy based on LIPA connection according to the present invention, as shown in fig. 2:
step 201, LIPA UE user initiates ATTACH request of ATTACH data bearer layer to eNB user, and requires to establish bearer data channel.
In step 202, the eNB sends an Initial UE message to the MME, wherein the eNB provides local L-GW address information in the "GW Transport LayerAddress" parameter.
Step 203, the MME sends a Create Session Request message to the Serving GW, requesting to establish a user plane bearer channel at the LGW side.
Step 204, the Serving GW sends a Create SessionRequest message to the LGW according to the LGW address provided by the MME, requesting that a PDN bearer channel be provided at the LGW side.
In step 205, the LGW provides pdnaddrses and LGW TEID-C and LGW TEID-U information to Serving GW through Create Session Response message.
Step 206, the Serving GW sends the PDN bearer channel to the MME.
Step 207, the MME returns the constructed PDN bearer path information to the eNB through the InitalContext Setup Request message.
Step 207, the eNB starts the eNB to establish the PDN Request procedure for the second time after receiving the initial context Setup Request message for the first time.
And step 208, sending an Initial UE message to the MME for the second time, wherein the "GW transport layer Address" parameter is set to "null", and the "equality backup cause" parameter needs to be marked as "virtual data access".
Step 209, the MME receives the second Initial UE message, determines that the "S-TMSI" in the two Initial UE messages is consistent, and simultaneously determines that the "GW Transport Layer Address" parameter is set to "null", and the "virtual data access" parameter is marked as "virtual data access"; and the MME initiates a second Create Session Request message to the Serving GW to Request the establishment of a user plane bearer channel at the local PGW side.
Step 210, the Serving GW sends a Create SessionRequest message to the PGW according to the PGW address provided by the MME, and requires to provide a PDN bearer channel on the PGW side.
Step 211, the PGW initiates an IP CAN connection to the PCRF according to the user identity, the user access network information, and the like carried in the Create Session Request message by the Serving GW, and acquires the Qos control policy information of the user APN attribute from the PCRF.
Step 212, the PGW provides PDNAddress, PGW TEID-C, PGW TEID-U, Qos control policy, and other information to Serving GW through Create Session Response message.
Step 213, the Serving GW sends the PDN bearer channel to the MME along with the information and Qos control policy.
In step 214, the MME returns the constructed PDN bearer path information and Qos control policy to the eNB through the InitalContextSetup Request message.
Step 215, according to the information of the UE S1AP ID, S-TIMSI and the like, the TEID of the LGW is associated with the TEID of the PGW, and meanwhile, the Qos control parameter of the second PDN context connection response is mapped to the first PDN context connection response parameter.
In step 216, the eNB sends an RRC connection reconfiguration message to the UE user side, where the message includes the reconfiguration SRB1, radio resource configuration, and radio Qos policy parameters, and establishes bearer channels such as SRB2, DBR, APN-AMBR, and the like.
In step 217, the UE returns an RRC ConnectionReconfiguration Complete message to the eNB.
In step 218, the eNB sends an Initial Context Setup Response message to the MME to indicate that the UE Context Setup is completed.
In step 219, the UE returns an RRC Direct Transfer message to the eNB.
Step 220, eNB sends S1AP to MME: PDN Connectivity Complete message.
After the eNB receives the initial context connection response message of the MME for the second time, the eNB associates the TEID of the LGW with the TEID of the PGW according to the information of the UE S1AP ID, S-TIMSI and the like, and maps the Qos control parameter of the PDN context connection response for the second time to the PDN context connection response parameter for the first time.
Before the LIPA UE user completes the radio bearer NAS Attach, the eNB sends a PDN context connection response parameter according to the mapped first MME, initiates RRC connection configuration reset for the UE, and configures a related radio air interface Qos parameter.
Fig. 3 is a schematic flowchart illustrating an eNB determination process according to an embodiment of the method for controlling a dynamic bearer policy based on LIPA connectivity, as shown in fig. 3:
in step 301, the eNB receives a LIPA-based PDN connectivity request of the UE.
And 305, the eNB receives the initial context connection response message of the MME for the second time, and temporarily stores the uplink tunnel TEID allocated to the PGW by the MME and the Qos control parameter allocated to the PCRF.
And 307, the eNB gives a PDN context connection response parameter according to the mapped first MME, initiates RRC connection configuration reset to the UE, and configures related wireless air interface Qos parameters.
In an embodiment, after an MME starts an SGW (Serving GateWay) to send a local PGW PDN bearer connection establishment request, the S-GW and the local PGW establish a LOOPback channel in the local PGW according to the MME request.
The PGW generates a LOOPback virtual bearer internally according to whether the parameter of the Selection Mode in the Create Bear Request is '03', if so, the PGW initiates a normal QoS strategy and charging rule Request to the PCRF, and replies a Create Bear Resqonse to the SGW to carry the QoS strategy control parameter. The value of "Selection Mode" may be set as appropriate, and may be, for example, 02, 04, or the like.
Fig. 4 is a schematic flowchart illustrating a MME judgment process according to an embodiment of the method for controlling a dynamic bearer policy based on LIPA connectivity in the present invention, as shown in fig. 4:
In step 403, the MME sends an initial context attach response message to the eNB, which is allocated to the uplink tunnel TEID of the LGW.
In step 405, the MME initiates a request for creating a local PGW bearer path to the SGW, and requests the local PGW to establish a LOOPback path for the eNB. And is set to "03" in the "Selection Mode" parameter in the Create Bear Request.
In step 406, the MME sends an initial context connection response message, PDN bearer channel information (including the uplink tunnel TEID of the PGW) and Qos control policy to the eNB.
Fig. 5 is a flowchart illustrating a PGW determination process according to an embodiment of the method for controlling a dynamic bearer policy based on LIPA connectivity, as shown in fig. 5:
step 501, the PGW receives a Create Bear Request from the SGW.
Step 502, the PGW determines whether the parameter "Selection Mode" in the Create Bear Request is "03", and if not, the PGW establishes a normal bearer channel according to the existing 3GPP specification.
In step 503, if the value is 03, the PGW generates an LOOPback virtual bearer channel inside, and forms a downlink TEID.
Step 504, the PGW requests Qos control policy and charging rule information to the PCRF;
step 505, the PGW sends Create Bear Response message to the SGW, and carries downlink TEID, Qos control policy and charging rule information.
In one embodiment, as shown in fig. 6, the present invention provides an eNB60, comprising: a first connection establishing module 61, a second connection establishing module 62 and a parameter configuration module 63. The first connection establishing module 61 sends a first bearer connection channel request message to the mobility management entity MME, and establishes a first bearer connection between the eNB and the local gateway LGW.
The second connection establishing module 62 sends a second bearer connection channel request message to the MME, establishes a second bearer connection between the eNB and the packet data gateway PGW, and receives a Qos control parameter delivered by the policy and charging rules function unit PCRF. The parameter configuration module 63 associates the first bearer connection with the second bearer connection, and configures parameters of the UE based on the Qos control parameters.
The first connection establishing module 61 sends a first Initial UE message request message to the MME, where a GW Transport Layer address parameter in the first Initial UE message request message carries address information of the LGW. The first connection establishing module 61 receives the first PDN bearer channel information returned by the MME, and obtains an uplink TEID allocated to the LGW by the MME carried in the first PDN bearer channel information.
The second connection establishing module 62 sends a second Initial UE message request message to the MME, wherein a GW Transport Layer address parameter of the second Initial UE message request message is set to null, and an estabilishment cause parameter of the second Initial UE message is set to virtual dataaccess; the second connection establishing module 62 receives the second PDN bearer channel information returned by the MME, and acquires the uplink TEID allocated by the MME to the PGW and the Qos control parameter allocated by the PCRF.
The parameter configuration module 63 associates the first bearer connection with the second bearer connection according to the UE S1AP ID, the uplink TEID, and the downlink TEID, and maps the Qos control parameter to the parameter related to Qos in the first PDN bearer channel information. The parameter configuration module 63 initiates RRC connection configuration reset to the UE according to the Qos-related parameter in the first PDN bearer channel information, and configures a wireless air interface Qos parameter.
In one embodiment, as shown in fig. 7, the present invention provides a mobility management entity MME70, including: a first resource management module 71 and a second resource management module 72. The first resource management module 71 receives the first bearer connection channel request message sent by the eNB, and returns the first PDN bearer channel information to the eNB. And the eNB establishes a first bearer connection with the local gateway LGW based on the first PDN bearer channel information.
The second resource management module 72 receives the second bearer connection channel request message sent by the eNB, and returns the second PDN bearer channel information to the eNB. And the eNB establishes a second bearer connection with the packet data gateway (PGW) based on the second PDN bearer channel information and receives the Qos control parameter issued by the PCRF.
The first resource management module 71 sets an uplink TEID allocated to the LGW in the first PDN bearer channel information. The first resource management module 71 receives the first Initial UE message request message, and obtains the APN of the UE from the home subscriber server HSS. The first resource management module 71 determines whether the GWTransport Layer address parameter of the first Initial UE message request message is empty, and if not, the MME initiates a bearer creation request to the serving gateway SGW.
The second resource management module 72 sets the uplink TEID allocated to the PGW and the Qos control parameter allocated to the PCRF in the second PDN bearer information. The second resource management module 72 receives the second Initial UE message request message, determines whether the S-TMSI parameter value in the second Initial UE message request message is the same as the S-TMSI parameter value in the first Initial UE message request message, if so, the second resource management module 72 determines whether the GW Transport Layer address parameter in the second Initial UE message request message is empty; if the request message is empty, the second resource management module 72 determines whether the value of the establistensincause parameter in the second Initial UE message request message is set to virtual data access, and if the value of the establistensincause parameter is set to virtual data access, the second resource management module 72 sends a request for establishing the PDN bearer connection path to the SGW.
In one embodiment, the present invention provides a communication network comprising: an eNB as above, an MME as above.
In the method, the apparatus, and the IMS network for controlling a dynamic bearer policy based on LIPA connection provided in the embodiments, an eNB establishes bearer connections with an LGW and a PGW respectively through a secondary bearer channel, and the eNB implements association of two bearer channel logical links, so as to implement that Qos policy control parameters delivered in real time by a PCRF are transmitted through a signaling bearer control signaling connection channel between the eNB, the PGW (PCEF), and the PCRF, and implement that the eNB dynamically adjusts and controls Qos of a local breakout LIPA user, such as a radio air interface and an LGW bearer layer, and an interworking interface protocol between the eNB and the MME, the MME and the SGW, the SGW and the PGW, and the PGW and the PCRF is used, and there is no additional link of interaction with the user, and there is no need to change a network architecture, and is suitable for implementing dynamic policy control of local breakout.
The method and system of the present invention may be implemented in a number of ways. For example, the methods and systems of the present invention may be implemented in software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustrative purposes only, and the steps of the method of the present invention are not limited to the order specifically described above unless specifically indicated otherwise. Furthermore, in some embodiments, the present invention may also be embodied as a program recorded in a recording medium, the program including machine-readable instructions for implementing a method according to the present invention. Thus, the present invention also covers a recording medium storing a program for executing the method according to the present invention.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (14)
1. A dynamic bearing strategy control method based on local IP access LIPA connection is characterized by comprising the following steps:
an evolved node B eNB sends a first bearer connection channel request message to a mobile management entity MME, and establishes a first bearer connection between the eNB and a local gateway LGW;
the eNB sends a first Initial UE message request message to the MME, wherein a GW Transport Layer Address parameter in the first Initial UE message request message carries address information of the LGW; the eNB receives first PDN bearer channel information returned by the MME, and acquires an uplink TEID (traffic engineering identifier) distributed to the LGW by the MME carried in the first PDN bearer channel information;
the eNB sends a second bearer connection channel request message to the MME, establishes a second bearer connection between the eNB and a packet data gateway (PGW), and receives a Qos control parameter issued by a Policy and Charging Rules Function (PCRF);
the eNB sends a second Initial UE message request message to the MME, wherein a GW Transport Layer address parameter of the second Initial UE message request message is set to be null, and an estabilishment cause parameter of the second Initial UE message is set to be virtual data access; the eNB receives second PDN bearer channel information returned by the MME, and acquires an uplink TEID distributed to the PGW by the MME and a Qos control parameter distributed by the PCRF;
and the eNB associates the first bearer connection with the second bearer connection and configures parameters of the User Equipment (UE) based on the Qos control parameters.
2. The method of claim 1, comprising:
the MME receives the first Initial UE message request message and acquires the APN of the UE from a Home Subscriber Server (HSS);
the MME judges whether a GW Transport Layer address parameter of the first Initial UE message request message is empty or not;
and if not, the MME initiates a bearer creation request to a Serving Gateway (SGW).
3. The method of claim 2, comprising:
the MME receives the second Initial UE message request message and judges whether an S-TMSI parameter value in the second Initial UE message request message is the same as that of the first Initial UE message request message or not;
if yes, judging whether a GW Transport LayerAddress parameter in the second Initial UE message request message is empty;
if yes, judging whether the value of the establistensionCause parameter in the second Initial UE message request message is set to the virtual data access, if yes, the MME sends a request for establishing the PDN bearing connection channel to the SGW.
4. The method of claim 3, comprising:
establishing a LOOPback channel by the SGW and the PGW;
the SGW sends a Create Bear Request message to the PGW, wherein a Selection Mode parameter in the Create Bear Request message is set as a preset parameter value.
5. The method of claim 4, comprising:
the PGW judges whether a Selection Mode parameter in the Create Bear Request message is set as a preset parameter value, if so, the PGW requests Qos control strategy and charging rule information to the PCRF;
and the PGW sends a Create Bear Response message to the SGW, and carries downlink TEID, Qos control parameters and charging rule information.
6. The method of claim 5, wherein the eNB associating the first bearer connection with the second bearer connection comprises:
and the eNB associates the first bearer connection with the second bearer connection according to the UE S1AP ID, the uplink TEID and the downlink TEID, and maps the Qos control parameter in a parameter related to Qos in the first PDN bearer channel information.
7. The method of claim 6, wherein configuring connection parameters for a user terminal (UE) based on Qos control parameters comprises:
and the eNB initiates RRC connection configuration reset to the UE according to the parameters related to the Qos in the first PDN bearer channel information, and configures wireless air interface Qos parameters.
8. An evolved node B, eNB, comprising:
a first connection establishing module, configured to send a first bearer connection channel request message to a mobility management entity MME, and establish a first bearer connection between the eNB and a local gateway LGW;
the first connection establishing module sends a first Initial UE message request message to the MME, where a GW Transport Layer address parameter in the first Initial UE message request message carries address information of the LGW; the first connection establishing module receives first PDN bearer channel information returned by the MME, and acquires an uplink TEID (traffic engineering identifier) distributed to the LGW by the MME carried in the first PDN bearer channel information;
a second connection establishing module, configured to send a second bearer connection channel request message to the MME, establish a second bearer connection between the eNB and a packet data gateway PGW, and receive a Qos control parameter delivered by a policy and charging rules function unit PCRF;
the second connection establishing module sends a second Initial UE message request message to the MME, wherein a GW Transport Layer address parameter of the second Initial UE message request message is set to null, and an estabilishment cause parameter of the second Initial UE message is set to virualdataaccess; the second connection establishing module receives second PDN bearer channel information returned by the MME, and acquires an uplink TEID distributed to the PGW by the MME and a Qos control parameter distributed by the PCRF;
and a parameter configuration module, configured to associate the first bearer connection with the second bearer connection, and configure a parameter of a user equipment UE based on the Qos control parameter.
9. The eNB of claim 8, wherein:
the parameter configuration module is specifically configured to associate the first bearer connection with the second bearer connection according to the UE S1AP ID, the uplink TEID, and the downlink TEID, and map the Qos control parameter in a parameter related to Qos in the first PDN bearer channel information.
10. The eNB of claim 9, wherein:
and the parameter configuration module initiates RRC connection configuration reset to the UE according to the parameters related to the Qos in the first PDN bearer channel information, and configures wireless air interface Qos parameters.
11. A Mobility Management Entity (MME), comprising:
the first resource management module is used for receiving a first bearer connection channel request message sent by an eNB and returning first PDN bearer channel information to the eNB; wherein the eNB establishes a first bearer connection with a local gateway LGW based on the first PDN bearer channel information;
the first resource management module is specifically configured to receive a first Initial UE message request message, and acquire an APN of the UE from a home subscriber server HSS; the first resource management module judges whether a GW Transport Layer Adress parameter of the first InitialUE message request message is empty; if not, the MME initiates a bearer creation request to a Serving Gateway (SGW);
a second resource management module, configured to receive a second bearer connection channel request message sent by the eNB, and return second PDN bearer channel information to the eNB; the eNB establishes a second bearer connection with a packet data gateway (PGW) based on the second PDN bearer channel information, and receives a Qos control parameter issued by a PCRF;
the second resource management module is further configured to receive a second Initial UE message request message, and determine whether an S-TMSI parameter value in the second Initial UE message request message is the same as an S-TMSI parameter value in the first Initial UE message request message; if yes, judging whether a GW Transport Layer address parameter in the second Initial UE message request message is empty; if yes, judging whether the value of the establistensionCause parameter in the second Initial UE message request message is set to the virtual data access, and if yes, sending a PDN bearer connection channel establishment request to the SGW.
12. The MME of claim 11, wherein:
the first resource management module sets an uplink TEID allocated to the LGW in the first PDN bearer channel information.
13. The MME of claim 12, wherein:
and the second resource management module sets an uplink TEID allocated to the PGW and a Qos control parameter allocated to the PCRF in the second PDN bearer channel information.
14. A communication network, comprising:
the eNB of any of claims 8 to 10, the MME of any of claims 11 to 13.
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