CN104812017B - Method, system and the mobility management entity of cognitive radio access module - Google Patents
Method, system and the mobility management entity of cognitive radio access module Download PDFInfo
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Abstract
The invention discloses method, system and the mobility management entity of a kind of cognitive radio access module, are related to mobile communication field.The present invention is by improving subdistrict position identification information, setting is used to identify the preset field of wireless-access mode in subdistrict position identification information, when being then initially accessed using user or information exchange when cell switches between base station and mobility management entity occurs for user, mobility management entity obtains subdistrict position identification information, and the wireless-access mode of the information Perception user according to indicated by the preset field in subdistrict position identification information, to realize the wireless-access mode that mobile core network perception user is current under mixed networking mode.And it is possible to not influenced using existing message flow cognitive radio access module and variation on network elements such as wireless side base stations.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a method, a system, and a mobility management entity for sensing a radio access mode.
Background
As is known, for Long Term Evolution (LTE) networks, there are two radio access modes, Frequency Division Duplex (FDD) and Time Division Duplex (TDD), respectively. The international telecommunications union organization allocates different spectrum resources for the two wireless access modes on a global scale. Due to the scarcity of spectrum resources, more and more operators have frequency resources of both TDD and FDD, and deploy wireless networks of both TDD and FDD. In view of the non-direct layer consistency of FDD and TDD access modes, operators typically access both modes to a unified core network using the same network number, e.g. a Public Land Mobile Network (PLMN) number, which is known as a hybrid networking mode.
In the scenario of such hybrid networking, an operator needs to count the distribution of users and services in different wireless access modes, and know in time which wireless mode the user is currently accessing, so as to adopt a differentiated policy. This requires the mobile core network to be aware of the current radio access mode of the user, and unfortunately, the current protocol specifications and procedures do not have the capability of being aware of the radio access mode.
Disclosure of Invention
The embodiment of the invention aims to solve the technical problem that: the problem of how the mobile core network perceives the current radio access mode of the user in the hybrid networking mode.
According to an aspect of the embodiments of the present invention, a system for sensing a radio access mode is provided, including: a base station and a mobility management entity; the base station is used for sending cell position identification information to the mobility management entity when a user initially accesses or the user is switched to a cell, wherein the cell position identification information is provided with a preset field for identifying a wireless access mode; the mobility management entity is configured to acquire cell location identity information sent by a base station, and sense a wireless access mode of a user according to information indicated by a preset field in the cell location identity information, where the wireless access mode includes frequency division duplexing and time division duplexing.
In an embodiment of the system sensing a wireless access mode, the base station is specifically configured to send a session establishment request message to the mobility management entity in response to an attach request message of a user when the user initially accesses; the mobility management entity is specifically configured to receive a session establishment request message sent by a base station; wherein, the attach request message and the session setup request message carry cell location identification information.
In an embodiment of the system sensing a radio access mode, the base station is specifically configured to send a bearer change request message to the mobility management entity in response to a service handover message of a user when the user performs a cell handover; the mobility management entity is specifically configured to receive a bearer change request message sent by a base station; wherein, the service switching message and the bearing change request message carry the cell location identification information.
In one embodiment of the system for sensing radio access mode, the system further comprises: a serving gateway and a packet data network gateway; the mobility management entity is further configured to send an S11 interface message to the serving gateway, the S11 interface message including an extension information element for identifying a radio access mode; the service gateway is used for sending an S5 interface message to the packet data network gateway, and the S5 interface message comprises an extension cell used for identifying a wireless access mode; the packet data network gateway is used for acquiring the wireless access mode of the user from the extension cell of the S5 interface message and sending the wireless access mode of the user to the policy and charging rules function entity or the access network discovery and selection function entity.
In one embodiment of the system for sensing radio access mode, the system further comprises: a policy and charging rule function entity or an access network discovery and selection function entity; the strategy and charging rule function entity is used for receiving the wireless access mode of the user sent by the packet data network gateway and issuing a corresponding service quality control strategy or charging strategy according to the wireless access mode of the user; or the access network discovery and selection functional entity is used for receiving the wireless access mode of the user sent by the packet data network gateway and issuing a corresponding network selection strategy according to the wireless access mode of the user.
According to another aspect of the embodiments of the present invention, a method for sensing a radio access mode is provided, including: a mobility management entity acquires cell location identification information sent by a base station, wherein the cell location identification information is provided with a preset field for identifying a wireless access mode; and the mobility management entity senses the wireless access mode of the user according to the information indicated by the preset field in the cell location identification information, wherein the wireless access mode comprises frequency division duplex and time division duplex.
In one embodiment of the method for sensing wireless access mode, the acquiring, by the mobility management entity, cell location identification information transmitted by the base station comprises: the mobility management entity obtains the cell location identification information sent by the base station through the S1 interface message.
In one embodiment of the method for sensing radio access mode, the acquiring, by the mobility management entity, cell location identification information sent by the base station through the S1 interface message includes: a mobile management entity receives a session establishment request message sent by a base station in response to the initial access of a user, wherein the session establishment request message carries cell location identification information; or, the mobility management entity receives a bearer change request message sent by the base station in response to the cell handover of the user, where the bearer change request message carries the cell location identifier information.
In one embodiment of the method of sensing radio access mode, the method further comprises: the mobility management entity sends an S11 interface message to the serving gateway, wherein the S11 interface message comprises an extension cell for identifying a wireless access mode; the service gateway sends an S5 interface message to the packet data network gateway, the S5 interface message including an extension cell for identifying a wireless access mode; the packet data network gateway acquires the wireless access mode of the user from the extension information element of the S5 interface message and sends the wireless access mode of the user to the policy and charging rules function entity or the access network discovery and selection function entity.
In one embodiment of the method of sensing radio access mode, the method further comprises: the strategy and charging rule functional entity issues a corresponding service quality control strategy or charging strategy according to the wireless access mode of the user; or the access network discovery and selection functional entity issues a corresponding network selection strategy according to the wireless access mode of the user.
According to another aspect of the embodiments of the present invention, a mobility management entity aware of radio access mode is provided, which includes: an identification obtaining unit, configured to obtain cell location identification information sent by a base station, where the cell location identification information is provided with a preset field for identifying a wireless access mode; and a mode sensing unit, configured to sense a wireless access mode of the user according to information indicated by a preset field in the cell location identifier information, where the wireless access mode includes frequency division duplex and time division duplex.
In an embodiment of the mobility management entity aware of radio access mode, the identity acquiring unit is specifically configured to acquire cell location identity information sent by the base station through an S1 interface message.
In an embodiment of a mobility management entity that is aware of a radio access mode, the identifier obtaining unit is specifically configured to: receiving a session establishment request message sent by a base station in response to initial access of a user, wherein the session establishment request message carries cell location identification information; or receiving a bearer change request message sent by the base station in response to the cell handover of the user, wherein the bearer change request message carries the cell location identifier information.
The invention has at least the following beneficial effects:
on one hand, by improving the cell location identification information, setting a preset field for identifying a wireless access mode in the cell location identification information, and then utilizing information interaction between a base station and a mobility management entity when a user initially accesses or the user performs cell switching, the mobility management entity acquires the cell location identification information and perceives the wireless access mode of the user according to information indicated by the preset field in the cell location identification information, thereby realizing that the mobile core network perceives the current wireless access mode of the user in a hybrid networking mode. In addition, the existing message flow can be used for sensing the wireless access mode and the change, and the influence on network elements such as a wireless side base station and the like is avoided.
On the other hand, the wireless access mode of the user can be sent to the strategy and charging rule function entity or the access network discovery and selection function entity through the cell of the expansion interface message, so that the differentiated control strategy can be issued according to different wireless access modes of the user.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a system for sensing a radio access mode according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of another embodiment of a system for sensing radio access mode according to the present invention.
Fig. 3 is a schematic structural diagram of an embodiment of a mobility management entity for sensing a radio access mode according to the present invention.
Fig. 4 is a flowchart illustrating a method for sensing a radio access mode according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating an embodiment of reporting a radio access mode by a mobility management entity according to the present invention.
Detailed Description
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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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 relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In order to solve the problem of how to perceive the current wireless access mode of a user by a mobile core network in a hybrid networking mode, the embodiment of the invention provides a perception scheme of the wireless access mode. The following describes the scheme for sensing the radio access mode according to the present invention.
According to the standard flow of 3GPP, the inventors found that: when a user initiates initial access or the user is subjected to cell switching, flow interaction is carried out between a base station and a Mobility Management Entity (MME), the interaction flow comprises the position information of the cell where the user is currently located, namely the MME can always sense the position of the cell where the user is currently located in real time. The inventor also found that: the identification information related to the cell location is planned by the operator. Based on the foregoing findings, the inventors propose: when planning the cell location identification information, a certain field is specified to identify the radio access mode of the cell (i.e. FDD cell or TDD cell), so that when the MME receives the cell location identification information, the MME can know the radio access mode corresponding to the cell in time through the information indicated by the specific field, and can further transmit the radio access mode to other network elements, so that the other network elements make corresponding control strategies according to the current radio access mode of the user.
Fig. 1 is a schematic structural diagram of a system for sensing a radio access mode according to an embodiment of the present invention. As shown in fig. 1, the system for sensing a radio access mode of the present embodiment includes: a base station 101 and a mobility management entity 102. The base station may be an evolved Node B (eNB) in an LTE network, for example.
The base station 101 is configured to send cell location identifier information to the mobility management entity 102 when a user initially accesses the base station or when the user performs cell handover, where the cell location identifier information includes a preset field for identifying a wireless access mode. The mobility management entity is configured to acquire cell location identity information sent by a base station, and sense a wireless access mode of a user according to information indicated by a preset field in the cell location identity information, where the wireless access mode includes frequency division duplexing and time division duplexing.
In one embodiment of the system for sensing radio access mode, the base station 101 is specifically configured to send the cell location identifier information to the mobility management entity 102 via S1 interface message when the user initially accesses or when the user performs a cell handover. When a user initially accesses or a cell is switched, the base station sends a different S1 interface message to the mobility management entity, and the S1 interface message carries cell location identification information. The S1 interface is also referred to as the S1-MME interface, and correspondingly, the S1 interface messages are also referred to as the S1-MME interface messages.
The following describes the sensing schemes of the wireless access mode respectively for two scenarios when the user initially accesses or when the user performs cell switching.
In an embodiment of the system sensing the radio access mode, when a user initially accesses, for example, when the user sends an attach request message (attach message) to a base station, the base station 101 is specifically configured to send a session establishment request message (create session request message) to the mobility management entity 102 in response to the attach request message of the user; the mobility management entity 102 is specifically configured to receive a session establishment request message sent by the base station 101, and perceive a wireless access mode of a user according to information indicated by a preset field in cell location identifier information carried in the session establishment request message; wherein, the attach request message and the session setup request message both carry cell location identification information.
In an embodiment of the system sensing the radio access mode, when a user performs cell handover, for example, the user sends a service handover message (service handover message) to a base station, the base station 101 is specifically configured to send a bearer change request message (modify bearer request message) to the mobility management entity 102 in response to the service handover message of the user; the mobility management entity 102 is specifically configured to receive a bearer change request message sent by a base station; wherein, the service switching message and the bearing change request message carry the cell location identification information.
As an exemplary embodiment, the cell location Identifier information may be ECGI (E-UTRAN cell global identity under evolved universal terrestrial radio access network), for example, and the cell global identity may be used to identify a cell within a location area. The cell global identity includes MCC (mobile country code), MNC (mobile network number), LAC (location area number), and CI (cell identity). The MCC may uniquely identify the country to which the mobile subscriber belongs, e.g., the MCC of china is 460. The MNC may identify the mobile communication network (PLMN) to which the mobile subscriber belongs, for example, MNC 00 for china mobile and MNC 01 for china unicom. The LAC may identify a location area in the network, which may be customized by the operator. The CI is a cell identity, which may also be customized by the operator. As an exemplary embodiment, a field for identifying a radio access mode may be set in a Cell Identity (CI) allowing customization by an operator, for example, the first bit of the Cell Identity (CI) may be used to identify the radio access mode, for example, 1 indicates FDD and 0 indicates TDD.
After the mobility management entity senses the radio access mode of the user, the mobility management entity can also report the radio access mode of the user to a related network element. The following describes a reporting process of the radio access mode by taking the network elements such as a Policy and Charging Rules Function (PCRF) or an Access Network Discovery and Selection Function (ANDSF) as examples.
Fig. 2 is a schematic structural diagram of another embodiment of a system for sensing radio access mode according to the present invention.
In one embodiment of the system for sensing radio access mode, as shown in fig. 2, the system further comprises: a serving gateway 203 and a packet data network gateway (PGW) 204. The serving gateway is responsible for the transmission, forwarding, route switching, etc. of user data, and under different networks, the serving gateway may be, for example, an SGW (serving gateway) or an SGSN (serving GPRS support node), etc. As an exemplary radio access mode reporting manner, the mobility management entity 102 is further configured to send an S11 interface message to the serving gateway 203, where the S11 interface message includes an extension cell for identifying a radio access mode; the serving gateway 203 is configured to send an S5 interface message to the packet data network gateway 204, the S5 interface message including an extension information element for identifying a radio access mode; the packet data network gateway 204 is configured to obtain the radio access mode of the user from the extension information element of the S5 interface message, and send the radio access mode of the user to the Policy and Charging Rules Function (PCRF) 205 or the Access Network Discovery and Selection Function (ANDSF) 206.
The reporting mode of the wireless access mode utilizes the existing interface message and expands the cell of the interface message to send the wireless access mode of the user to the related network element, so that the related network element can issue the differentiated control strategy according to different wireless access modes of the user.
In one embodiment of the system for sensing radio access mode, as shown in fig. 2, the system further comprises: a policy and charging rules function 205 or an access network discovery and selection function 206. The policy and charging rule function entity is a policy and charging control policy decision point of service data flow and IP bearer resources. The access network discovery and selection function provides access information about the connection for the user equipment. The policy and charging rule function 205 is configured to receive a wireless access mode of a user sent by a packet data network gateway, and issue a corresponding quality of service (QoS) control policy or charging policy according to the wireless access mode of the user; or, the access network discovery and selection functional entity 206 is configured to receive the wireless access mode of the user sent by the packet data network gateway, and issue a corresponding network selection policy according to the wireless access mode of the user.
The differentiated control strategy is illustrated below. For example, for the charging policy, the rate in TDD mode is a, the rate in FDD mode is B, a and B are different rate values; aiming at a service quality control strategy, the maximum bandwidth limit in a TDD mode is A, the maximum bandwidth limit in an FDD mode is B, and A and B are different bandwidths; aiming at the network selection strategy, if the TDD network load is large, the new access user is migrated to the adjacent FDD cell, and if the FDD network load is large, the new access user is migrated to the adjacent TDD cell.
The policy and charging rules function entity may issue different charging policies to a policy and charging enforcement function entity (PCEF), which performs differentiated charging statistics for different wireless access modes according to the charging policies and may also reflect the differentiated charging statistics in the user's call ticket.
Fig. 3 is a schematic structural diagram of an embodiment of a mobility management entity for sensing a radio access mode according to the present invention. As shown in fig. 3, the mobility management entity 102 of the present embodiment includes:
an identifier obtaining unit 301, configured to obtain cell identifier information sent by a base station, where the cell identifier information is provided with a preset field for identifying a wireless access mode;
a mode sensing unit 302, configured to sense a radio access mode of a user according to information indicated by a preset field in the cell location identifier information, where the radio access mode includes frequency division duplex and time division duplex.
In an embodiment of the mobility management entity aware of radio access mode, the identity obtaining unit 301 is specifically configured to obtain cell location identity information sent by the base station through an S1 interface message.
In an embodiment of a mobility management entity that is aware of a radio access mode, the identifier obtaining unit 301 is specifically configured to: receiving a session establishment request message sent by a base station in response to initial access of a user, wherein the session establishment request message carries cell location identification information; or receiving a bearer change request message sent by the base station in response to the cell handover of the user, wherein the bearer change request message carries the cell location identifier information.
Fig. 4 is a flowchart illustrating a method for sensing a radio access mode according to an embodiment of the present invention. As shown in fig. 4, the sensing method of the present embodiment includes the following steps:
step S401, a mobility management entity obtains cell location identification information sent by a base station, wherein the cell location identification information is provided with a preset field for identifying a wireless access mode;
step S402, the mobility management entity perceives the wireless access mode of the user according to the information indicated by the preset field in the cell location identification information, and the wireless access mode comprises frequency division duplex and time division duplex.
In one embodiment of the method for sensing wireless access mode, the acquiring, by the mobility management entity, cell location identification information transmitted by the base station comprises: the mobility management entity obtains the cell location identification information sent by the base station through the S1 interface message.
In one embodiment of the method for sensing radio access mode, the acquiring, by the mobility management entity, cell location identification information sent by the base station through the S1 interface message includes: a mobile management entity receives a session establishment request message sent by a base station in response to the initial access of a user, wherein the session establishment request message carries cell location identification information; or, the mobility management entity receives a bearer change request message sent by the base station in response to the cell handover of the user, where the bearer change request message carries the cell location identifier information.
In one embodiment of the method of sensing radio access mode, the method further comprises: as shown in fig. 5, the process of reporting the radio access mode by the mobility management entity specifically includes:
step S501, the mobility management entity sends an S11 interface message to the serving gateway, the S11 interface message includes an extension cell for identifying a wireless access mode;
step S502, the service gateway sends an S5 interface message to the packet data network gateway, the S5 interface message includes an extension cell for identifying a wireless access mode;
step S503, the packet data network gateway obtains the wireless access mode of the user from the extended cell of the S5 interface message, and sends the wireless access mode of the user to the policy and charging rules function entity or the access network discovery and selection function entity.
In one embodiment of the method of sensing radio access mode, the method further comprises: the strategy and charging rule function entity or the access network discovery and selection function entity carries out differentiated strategy control according to different wireless access modes of users. The method specifically comprises the following steps:
the strategy and charging rule functional entity issues a corresponding service quality control strategy or charging strategy according to the wireless access mode of the user; or the access network discovery and selection functional entity issues a corresponding network selection strategy according to the wireless access mode of the user.
The differentiated control strategy is illustrated below. For example, for the charging policy, the rate in TDD mode is a, the rate in FDD mode is B, a and B are different rate values; aiming at a service quality control strategy, the maximum bandwidth limit in a TDD mode is A, the maximum bandwidth limit in an FDD mode is B, and A and B are different bandwidths; aiming at the network selection strategy, if the TDD network load is large, the new access user is migrated to the adjacent FDD cell, and if the FDD network load is large, the new access user is migrated to the adjacent TDD cell.
The embodiment of the invention at least has the following beneficial effects:
on one hand, by improving the cell location identification information, setting a preset field for identifying a wireless access mode in the cell location identification information, and then utilizing information interaction between a base station and a mobility management entity when a user initially accesses or the user performs cell switching, the mobility management entity acquires the cell location identification information and perceives the wireless access mode of the user according to information indicated by the preset field in the cell location identification information, thereby realizing that the mobile core network perceives the current wireless access mode of the user in a hybrid networking mode. In addition, the existing message flow can be used for sensing the wireless access mode and the change, and the influence on network elements such as a wireless side base station and the like is avoided.
On the other hand, the mobility management entity, the serving gateway and the packet data network gateway can utilize the existing interface message and expand the cell of the interface message to send the wireless access mode of the user to the policy and charging rule functional entity or the access network discovery and selection functional entity so as to issue differentiated control policies according to different wireless access modes of the user.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (11)
1. A system for sensing wireless access mode, comprising: the system comprises a base station, a mobility management entity, a service gateway and a packet data network gateway;
the base station is used for sending cell position identification information to the mobility management entity when a user initially accesses or the user is switched to a cell, wherein the cell position identification information is provided with a preset field for identifying a wireless access mode;
the mobile management entity is used for acquiring cell position identification information sent by a base station and sensing a wireless access mode of a user according to information indicated by a preset field in the cell position identification information, wherein the wireless access mode comprises frequency division duplex and time division duplex;
the mobility management entity is further configured to send an S11 interface message to the serving gateway, the S11 interface message including an extension information element for identifying a radio access mode;
the service gateway is used for sending an S5 interface message to the packet data network gateway, and the S5 interface message comprises an extension cell used for identifying a wireless access mode;
the packet data network gateway is used for acquiring the wireless access mode of the user from the extension cell of the S5 interface message and sending the wireless access mode of the user to the policy and charging rules function entity or the access network discovery and selection function entity.
2. The system of claim 1,
the base station is specifically used for responding to an attachment request message of a user when the user initially accesses, and sending a session establishment request message to the mobility management entity;
the mobility management entity is specifically configured to receive a session establishment request message sent by a base station;
wherein, the attach request message and the session setup request message carry cell location identification information.
3. The system of claim 1,
the base station is specifically used for responding to a service switching message of a user when the user is subjected to cell switching, and sending a bearing change request message to the mobile management entity;
the mobility management entity is specifically configured to receive a bearer change request message sent by a base station;
wherein, the service switching message and the bearing change request message carry the cell location identification information.
4. The system of claim 1, further comprising: a policy and charging rule function entity or an access network discovery and selection function entity;
the strategy and charging rule function entity is used for receiving the wireless access mode of the user sent by the packet data network gateway and issuing a corresponding service quality control strategy or charging strategy according to the wireless access mode of the user; or,
the access network discovery and selection functional entity is used for receiving the wireless access mode of the user sent by the packet data network gateway and issuing a corresponding network selection strategy according to the wireless access mode of the user.
5. A method of sensing radio access mode, comprising:
a mobility management entity acquires cell location identification information sent by a base station, wherein the cell location identification information is provided with a preset field for identifying a wireless access mode;
the mobility management entity senses a wireless access mode of a user according to information indicated by a preset field in the cell location identification information, wherein the wireless access mode comprises frequency division duplex and time division duplex;
the mobility management entity sends an S11 interface message to the serving gateway, wherein the S11 interface message comprises an extension cell for identifying a wireless access mode;
the service gateway sends an S5 interface message to the packet data network gateway, the S5 interface message including an extension cell for identifying a wireless access mode;
the packet data network gateway acquires the wireless access mode of the user from the extension information element of the S5 interface message and sends the wireless access mode of the user to the policy and charging rules function entity or the access network discovery and selection function entity.
6. The method of claim 5, wherein the acquiring the cell location identity information sent by the base station by the mobility management entity comprises:
the mobility management entity obtains the cell location identification information sent by the base station through the S1 interface message.
7. The method of claim 6, wherein the acquiring, by the mobility management entity, the cell location identity information sent by the base station via the S1 interface message comprises:
a mobile management entity receives a session establishment request message sent by a base station in response to the initial access of a user, wherein the session establishment request message carries cell location identification information; or,
the mobility management entity receives a bearing change request message sent by a base station in response to the cell switching of a user, wherein the bearing change request message carries cell position identification information.
8. The method of claim 5, further comprising:
the strategy and charging rule functional entity issues a corresponding service quality control strategy or charging strategy according to the wireless access mode of the user; or,
the access network discovery and selection functional entity issues a corresponding network selection strategy according to the wireless access mode of the user.
9. A radio access mode aware mobility management entity, comprising:
an identification obtaining unit, configured to obtain cell location identification information sent by a base station, where the cell location identification information is provided with a preset field for identifying a wireless access mode;
the mode sensing unit is used for sensing a wireless access mode of a user according to information indicated by a preset field in the cell location identification information, wherein the wireless access mode comprises frequency division duplex and time division duplex;
a sending unit, configured to send an S11 interface message to the serving gateway, where the S11 interface message includes an extension cell for identifying a radio access mode, so that the serving gateway sends an S5 interface message to the packet data network gateway, and the S5 interface message includes an extension cell for identifying a radio access mode, so that the packet data network gateway obtains the radio access mode of the user from the extension cell of the S5 interface message, and sends the radio access mode of the user to the policy and charging rules function entity or the access network discovery and selection function entity.
10. The mobility management entity according to claim 9, wherein the identifier obtaining unit is specifically configured to: and acquiring the cell location identification information sent by the base station through the S1 interface message.
11. The mobility management entity according to claim 10, wherein the identifier obtaining unit is specifically configured to:
receiving a session establishment request message sent by a base station in response to initial access of a user, wherein the session establishment request message carries cell location identification information; or,
receiving a bearing change request message sent by a base station in response to a cell switch of a user, wherein the bearing change request message carries cell position identification information.
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