Disclosure of Invention
In view of the foregoing technical problems, embodiments of the present invention provide a method, an apparatus, and a network architecture for accessing a terminal, so as to solve the problem that a user plane function entity cannot obtain context information required for user plane processing after a control plane function is separated from a user plane function.
According to a first aspect of the embodiments of the present invention, there is provided a method for terminal access, the method including:
the control plane function of the central unit receives a connection establishment request from a terminal forwarded by the user plane function of the transmission point;
the control plane function of the central unit distributes an access network terminal identifier for the terminal and configures service area information for the terminal;
the control plane function of the central unit sends a connection establishment response message to the terminal, wherein the connection establishment response message carries the access network terminal identification and the service area information;
and the control plane function of the central unit receives a connection establishment completion message sent by the terminal.
Optionally, the allocating, by the control plane function of the central unit, an access network terminal identifier for a terminal, and configuring service area information for the terminal, includes:
the control surface function of the central unit verifies the identity of the terminal to obtain a verification result;
and if the verification result is that the verification is passed, the control plane function of the central unit allocates an access network terminal identifier for the terminal and configures service area information for the terminal.
Optionally, the method further comprises:
the control surface function of the central unit judges whether the terminal needs to activate the security function;
if the terminal is required to activate the security function, the control plane function of the central unit sends a security activation instruction to the terminal;
and the control plane function of the central unit receives a security activation completion message sent by the terminal.
Optionally, the method further comprises:
the control plane function of the central unit receives the connection updating request forwarded by the user plane function of the transmission point;
the control plane function of the central unit determines the context of the terminal according to the obtained access network terminal identification and configures new service area information for the terminal;
the control plane function of the central unit sends a connection updating response message to the terminal, wherein the connection updating response message carries the new service area information;
and the control plane function of the central unit receives a connection updating completion message sent by the terminal.
Optionally, the access network terminal identifier is obtained from the connection update request or from interface signaling of the transmission point.
According to a second aspect of the embodiments of the present invention, there is also provided a terminal access method, where the method includes:
the terminal sends a connection establishment request through a wireless interface, and the connection establishment request is forwarded to a control plane function of the central unit by a user plane function of a network side;
the terminal receives a connection establishment response message of a wireless interface, wherein the connection establishment response message is assembled by a control plane function of a central unit at a network side and then sent, and carries an access network terminal identifier distributed for the terminal by the control plane function of the central unit and service area information configured for the terminal;
the terminal sends a connection setup complete message through the wireless interface.
Optionally, the method further comprises:
the terminal receives a security activation indication of a wireless interface, the security activation indication being sent by a control plane function of the central unit;
the terminal sends a security activation complete message through a wireless interface.
Optionally, the method further comprises:
the terminal sends a connection updating request through a wireless interface, and the connection updating request is forwarded to a control plane function of the central unit by a user plane function of the transmission point;
the terminal receives a connection update response message of a wireless interface, the connection update response message is assembled by a control plane function of a central unit at a network side and then is sent, the connection update response message carries new service area information, and the new service area information is configured for the terminal by the control plane function of the central unit according to an acquired access network terminal identifier;
the terminal sends a connection update completion message through a wireless interface.
Optionally, the method further comprises:
the terminal sends a connection updating request to the user plane function of the transmission point through a wireless interface, and the user plane function of the transmission point reselects a new central unit for the terminal;
the terminal receives a connection update response message of a wireless interface, the connection update response message is assembled by the control plane function of the new central unit and then sent, and the connection update response message carries an access network terminal identifier distributed for the terminal by the control plane function of the new central unit and new service area information;
the terminal sends a connection update completion message through a wireless interface.
Optionally, the method further comprises:
the terminal receiving a security activation indication of a wireless interface, the security activation indication being sent by a control plane function of the new central unit;
the terminal sends a security activation complete message through a wireless interface.
According to a third aspect of the embodiments of the present invention, there is also provided an apparatus for accessing a terminal, where the apparatus includes:
the first receiving module is used for receiving a request from a terminal for establishing connection forwarded by a user plane function of a transmission point;
a first configuration module, configured to allocate an access network terminal identifier to the terminal, and configure service area information for the terminal;
a first sending module, configured to send a connection establishment response message to the terminal, where the connection establishment response message carries the access network terminal identifier and the service area information;
and the second receiving module is used for receiving the connection establishment completion message sent by the terminal.
Optionally, the first configuration module is further configured to: verifying the identity of the terminal to obtain a verification result; and if the verification result is that the verification is passed, distributing an access network terminal identifier for the terminal, and configuring service area information for the terminal.
Optionally, the apparatus further comprises:
the judging module is used for judging whether the terminal needs to activate the safety function or not;
the second sending module is used for sending a security activation instruction to the terminal if the terminal needs to activate the security function;
and the third receiving module is used for receiving the security activation completion message sent by the terminal.
Optionally, the apparatus further comprises:
a fourth receiving module, configured to receive a connection update request forwarded by the user plane function of the transmission point;
a second configuration module, configured to determine a terminal context according to the obtained access network terminal identifier, and configure new service area information for the terminal;
a third sending module, configured to send a connection update response message to the terminal, where the connection update response message carries the new service area information;
and the fifth receiving module is used for receiving the connection updating completion message sent by the terminal.
Optionally, the access network terminal identifier is obtained from the connection update request or from interface signaling of the transmission point.
According to a fourth aspect of the embodiments of the present invention, there is further provided an apparatus for accessing a terminal, including:
a fourth sending module, configured to send a connection establishment request through a wireless interface, where the connection establishment request is forwarded to a control plane function of the central unit by a user plane function on a network side (or in a network architecture);
a sixth receiving module, configured to receive a connection establishment response message of a wireless interface, where the connection establishment response message is sent after being assembled by a control plane function of a central unit on a network side (or in a network architecture), and carries an access network terminal identifier allocated to a terminal by the control plane function of the central unit, and service area information configured for the terminal;
and a fifth sending module, configured to send the connection establishment completion message through the wireless interface.
Optionally, the apparatus further comprises:
a seventh receiving module, configured to receive a security activation indication of a wireless interface, where the security activation indication is sent by a control plane function of the central unit;
and a sixth sending module, configured to send the security activation complete message through the wireless interface.
Optionally, the apparatus further comprises:
a seventh sending module, configured to send a connection update request through a wireless interface, where the connection update request is forwarded to a control plane function of the central unit by the user plane function of the transmission point;
an eighth receiving module, configured to receive a connection update response message of a wireless interface, where the connection update response message is sent after being assembled by a control plane function of a central unit on a network side, and the connection update response message carries new service area information, where the new service area information is configured for the terminal by the control plane function of the central unit according to an obtained access network terminal identifier;
and an eighth sending module, configured to send the connection update completion message through the wireless interface.
Optionally, the apparatus further comprises:
a ninth sending module, configured to send a connection update request to the user plane function of the transmission point through a wireless interface, where the user plane function of the transmission point reselects a new central unit for the terminal;
a ninth receiving module, configured to receive a connection update response message of the wireless interface, where the connection update response message is sent after being assembled by a control plane function of a new central unit, and the connection update response message carries an access network terminal identifier and new service area information, which are allocated to the terminal by the control plane function of the new central unit;
a tenth sending module, configured to send a connection update completion message through the wireless interface.
Optionally, the apparatus further comprises:
a tenth receiving module, configured to receive a security activation indication of a wireless interface, where the security activation indication is sent by the control plane function of the new central unit;
and an eleventh sending module, configured to send the security activation complete message through the wireless interface.
According to a fifth aspect of the embodiments of the present invention, there is also provided a network architecture, including: the system comprises a central unit and a transmission point, wherein the central unit comprises a control plane function and a user plane function, and the transmission point comprises a user plane function;
the user plane function of the transmission point receives a connection establishment request sent by a terminal;
the control plane function of the central unit is used for receiving a connection establishment request from a terminal forwarded by the user plane function of the transmission point;
the control plane function of the central unit is also used for distributing an access network terminal identifier for the terminal and configuring service area information for the terminal;
the control plane function of the central unit is further configured to send a connection establishment response message to the terminal, where the connection establishment response message carries the access network terminal identifier and the service area information;
the control plane function of the central unit is further configured to receive a connection establishment completion message sent by the terminal.
One of the above technical solutions has the following advantages or beneficial effects: a control plane function of the central unit receives a connection establishment request from a terminal forwarded by a user plane function of a transmission point; the control plane function of the central unit distributes an access network terminal identifier for the terminal and configures service area information for the terminal; the control plane function of the central unit sends a connection establishment response message to the terminal, wherein the connection establishment response message carries the access network terminal identification and the service area information; and the control plane function of the central unit receives the connection establishment completion message sent by the terminal. The embodiment of the invention can realize that the user plane functional entity obtains the context information required by the user plane processing after the control plane function is separated from the user plane function, and can be applied to the future 5G access network.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As will be appreciated by one skilled in the art, embodiments of the present invention may be embodied as a system, apparatus, device, method, or computer program product. Thus, embodiments of the invention may be embodied in the form of: entirely hardware, entirely software (including firmware, resident software, micro-code, etc.), or a combination of hardware and software.
According to the embodiment of the invention, a method, a device and a network architecture for terminal access are provided.
Referring to fig. 2, a network architecture diagram of an exemplary application scenario according to an embodiment of the present invention is schematically illustrated.
As shown in fig. 2, the network architecture includes: a Central Unit (Central Unit) and a transmission point, wherein the transmission point has a radio frequency transmission capability and a certain operation processing capability, it is understood that the transmission point can also be referred to as: remote Unit (Remote Unit), distributed Unit (distributed Unit), Transmission Reception Point (TRP), Base Station (Base Station) or Transmission Point (Access Point), etc. Each central unit may establish connections with multiple transmission points, and each transmission point may also establish connections with multiple central units. The central unit comprises a control plane function and a user plane function; the control plane function of the central unit is responsible for functions of connection management, mobility management, selection of a user plane entity and the like; the user plane function of the central unit is responsible for caching and routing forwarding functions of terminal user plane data and control plane signaling and related processing functions of user plane safety, the user plane function of the central unit is responsible for forwarding data or signaling received from a transmission point to an external network or core network entity in the uplink direction, and the user plane function of the central unit is responsible for forwarding data or signaling received from the external network or core network to the transmission point in the downlink direction.
The user plane function of the transmission point is responsible for forwarding data or signaling received from the terminal to the central unit, or forwarding data received from the terminal to the external network, and the transmission point has a data routing function because the transmission point may need to forward data or signaling to different target networks or nodes in the uplink direction. Furthermore, if data is routed directly from the transfer point to an external data network, the transfer point needs to perform user plane security related processing functions. In the downlink direction, a transmission point is responsible for transmitting data or signaling received from a central unit, an external data network or a core network to a terminal (UE) over an air interface.
The user plane functions on the central unit and the transmission point refer to the functions of caching and routing forwarding of terminal user plane data and control plane signaling, and the user plane safety related processing function. The user plane functions may be realized in a centralized manner at a central location, or in a distributed manner at distributed transmission points. When the end user plane security function is performed in the user plane function of the central unit (e.g. corresponding to the PDCP layer protocol), the transmission point performs only the user plane forwarding function (below the RLC layer), and the user plane data is first converged to the user plane function of the central unit for processing before being routed to the external network. When the user plane security functions and routing functions of the terminal are performed at distributed transmission points (e.g. corresponding PDCP layer protocols and below, and gateway functions), the transmission points may directly route user plane data to external data networks.
First embodiment
A method for terminal access according to an exemplary embodiment of the present invention is described below with reference to fig. 3 in conjunction with a network architecture in an application scenario of fig. 2. It should be noted that the above application scenarios are only presented to facilitate understanding of the spirit and principles of the present invention, and the embodiments of the present invention are not limited in this respect. Rather, embodiments of the present invention may be applied to any scenario where applicable.
Fig. 3 schematically shows a flowchart of an embodiment of a method for terminal access in an embodiment of the present invention, where the network architecture to which the method for terminal access is applied includes: the central unit comprises a control plane function and a user plane function, wherein the control plane function comprises RRC (radio resource control) connection management, mobility management and the like; the user plane function of the transmission point is used for forwarding data or signaling routes, see fig. 2 in particular.
As shown in fig. 3, the terminal access in this embodiment may specifically include:
step 301, the control plane function of the central unit receives the connection establishment request from the terminal forwarded by the user plane function of the transmission point, and then step 302 is entered.
Step 302, the control plane function of the central unit allocates an access network terminal identifier to the terminal, and configures service area information for the terminal, and then step 303 is performed.
Optionally, a control plane function of the central unit verifies the identity of the terminal to obtain a verification result; if the verification result is that the verification is passed, the control plane function of the central unit allocates an access network terminal identifier for the terminal and configures service area information for the terminal.
Step 303, the control plane function of the central unit sends a connection establishment response message to the terminal, where the connection establishment response message carries the access network terminal identifier and the service area information, and then step 304 is performed.
Step 304, the control plane function of the central unit receives a connection establishment completion message sent by the terminal.
Optionally, after step 304, the method further comprises: the control surface function of the central unit judges whether the terminal needs to activate the safety function or not; if the terminal is required to activate the security function, the control surface function of the central unit sends a security activation instruction to the terminal; and the control plane function of the central unit receives the security activation completion message sent by the terminal.
Optionally, after step 304, the method further comprises: a control plane function of the central unit receives a connection updating request forwarded by a user plane function of the transmission point; the control plane function of the central unit determines the context of the terminal according to the obtained access network terminal identification and configures new service area information for the terminal; the control plane function of the central unit sends a connection updating response message to the terminal, wherein the connection updating response message carries the new service area information; and the control plane function of the central unit receives a connection updating completion message sent by the terminal. The access network terminal identifier is obtained from the connection update request or from the interface signaling of the transmission point.
The embodiment of the invention can realize that the user plane functional entity obtains the context information required by the user plane processing after the control plane function is separated from the user plane function, and can be applied to the future 5G access network.
Second embodiment
A method for terminal access according to an exemplary embodiment of the present invention is described below with reference to fig. 4 in conjunction with a network architecture in an application scenario of fig. 2. It should be noted that the above application scenarios are only presented to facilitate understanding of the spirit and principles of the present invention, and the embodiments of the present invention are not limited in this respect. Rather, embodiments of the present invention may be applied to any scenario where applicable.
Fig. 4 schematically shows a flowchart of an embodiment of a method for terminal access in an embodiment of the present invention, where the network architecture to which the method for terminal access is applied includes: the central unit comprises a control plane function and a user plane function, wherein the control plane function comprises RRC (radio resource control) connection management, mobility management and the like; the user plane function of the transmission point is used for forwarding data or signaling routes, see fig. 2 in particular.
As shown in fig. 4, the terminal access in this embodiment may specifically include:
step 401, the terminal sends a connection establishment request through the wireless interface, the connection establishment request is forwarded to the control plane function of the central unit by the user plane function of the network side, and then step 402 is entered.
Specifically, the terminal sends a connection establishment request to the user plane function of the transmission point, and the user plane function of the transmission point forwards the connection establishment request to the control plane function of the central unit.
Step 402, the terminal receives a connection establishment response message of the wireless interface, where the connection establishment response message is assembled by the control plane function of the central unit on the network side and then sent, and carries an access network terminal identifier allocated to the terminal by the control plane function of the central unit, and service area information configured for the terminal, and then step 403 is performed.
Specifically, the terminal receives a connection establishment response message sent by the control plane function of the central unit, where the connection establishment response message carries an access network terminal identifier allocated to the terminal by the control plane function of the central unit, and service area information configured for the terminal.
Step 403, the terminal sends a connection setup complete message through the wireless interface.
Specifically, the terminal sends a connection setup complete message to the control plane function of the central unit.
Optionally, after step 403, the method further comprises: the terminal receives a security activation indication of the wireless interface, the security activation indication being sent by the control plane function of the central unit, and then the terminal sends a security activation complete message through the wireless interface. Specifically, the terminal receives a security activation instruction sent by a control plane function of the central unit; and the terminal sends a security activation completion message to the control plane function of the central unit.
Optionally, after step 403, the method further comprises: the terminal sends a connection updating request through a wireless interface, the connection updating request is forwarded to a control surface function of the central unit by a user surface function of the transmission point, then the terminal receives a connection updating response message of the wireless interface, the connection updating response message is sent after being assembled by the control surface function of the central unit at the network side, the connection updating response message carries new service area information, and the new service area information is configured for the terminal by the control surface function of the central unit according to the obtained access network terminal identifier; the terminal sends a connection update completion message through a wireless interface.
Specifically, the terminal sends a connection update request to the user plane function of the transmission point, and the user plane function of the transmission point forwards the connection update request to the control plane function of the central unit; the terminal receives a connection update response message sent by the control plane function of the central unit, wherein the connection update response message carries new service area information, and the new service area information is configured for the terminal by the control plane function of the central unit according to the acquired access network terminal identifier; the terminal sends a connection update completion message to the control plane function of the central unit.
Optionally, after step 403, the method further comprises: the terminal sends a connection updating request to the user plane function of the transmission point through a wireless interface, and the user plane function of the transmission point reselects a new central unit for the terminal; the terminal receives a connection update response message of a wireless interface, the connection update response message is assembled by the control plane function of the new central unit and then sent, and the connection update response message carries an access network terminal identifier distributed for the terminal by the control plane function of the new central unit and new service area information; the terminal sends a connection update completion message through a wireless interface.
Specifically, the terminal sends a connection update request to the user plane function of the transmission point, and the user plane function of the transmission point reselects a new central unit for the terminal; the terminal receives a connection update response message sent by the control plane function of the new central unit, wherein the connection update response message carries an access network terminal identifier distributed by the control plane function of the new central unit for the terminal and new service area information; the terminal sends a connection update completion message to the control function of the new central unit.
Optionally, after step 403, the method further comprises: the terminal receives a security activation indication of a wireless interface, the security activation indication being sent by the control plane function of the new central unit; the terminal sends a security activation complete message through a wireless interface.
Specifically, the terminal receives a security activation instruction sent by the control plane function of the new central unit; and the terminal sends a security activation completion message to the control plane function of the new central unit.
The embodiment of the invention can realize that the user plane functional entity obtains the context information required by the user plane processing after the control plane function is separated from the user plane function, and can be applied to the future 5G access network.
Third embodiment
The process of the terminal initially accessing the network according to an exemplary embodiment of the present invention is described below with reference to fig. 5 in conjunction with the network architecture in the application scenario of fig. 2. In the process of initially accessing a network, a terminal establishes RRC connection with a control plane function (also referred to as a control plane function entity) of a central unit, the control plane function of the central unit allocates an access network terminal identifier for the terminal, generates a security context for the terminal, and configures service area information for the terminal, and after the terminal moves out of a service area, the terminal needs to initiate a location update process, which specifically includes the following steps:
step 501, after the terminal completes network selection, the terminal triggers a connection establishment process to the network side, the terminal sends a connection establishment request message to the transmission point, if the terminal does not send an access network terminal identifier to the transmission point (the terminal is not distributed with an effective access network terminal identifier in the initial access process) along with the connection request message, the transmission point randomly selects a central unit for the terminal, and forwards the connection establishment request message to a target central unit.
Step 502, after the central unit receives the connection establishment request message, the control plane function of the central unit verifies the terminal identity through interaction with the core network (also referred to as a core network functional entity), and after it is determined that the central unit can provide a service for the terminal, the control plane function of the central unit sends a connection establishment response message to the terminal, where the connection establishment response message carries an access network terminal identifier allocated to the terminal by the control plane function of the central unit and service area information configured for the terminal. The access network terminal identifier allocated to the terminal by the control plane function of the central unit may include identification information of the central unit itself. The core network stores the identification information of the central unit serving the terminal in the context information of the core network terminal.
Step 503, after the terminal saves the configuration information (including the access network terminal identifier and the service area information) obtained from the control plane function of the central unit, the terminal sends a connection establishment completion message to the control plane function of the central unit.
Optionally, in step 504, if the control plane function of the central unit determines that the terminal needs to activate the security function, the control plane function may send a security activation indication to the terminal. After the security function is activated, the control plane messages and the user plane data need to be processed in security.
Optionally, in step 505, the terminal sends a security activation complete message to the control plane function after confirming the security context activation. After the security up-down activation, the signaling of the uplink and downlink control plane can be transmitted only after security related processing.
The embodiment of the invention can realize that the user plane functional entity obtains the context information required by the user plane processing after the control plane function is separated from the user plane function, and can be applied to the future 5G access network.
Fourth embodiment
An update procedure initiated after a terminal moves out of a "service area" according to an exemplary embodiment of the present invention is described below with reference to fig. 6 in conjunction with a network architecture in the application scenario of fig. 2.
In this embodiment, the new "service area" to which the terminal has moved can still be served by the original central unit, so the central unit updates the "service area" information of the terminal. Since the terminal is still served by the original central unit, the terminal identity of the access network of the terminal is unchanged.
Step 601, according to the air interface system broadcast information, after the terminal judges that the terminal moves out of the service area, the terminal sends a connection updating request to the network side. Along with the connection updating request, the terminal sends the self access network terminal identification to the access point, and the transmission point forwards the connection updating request message to the target central unit according to the central unit information in the terminal identification.
Step 602, the central unit determines the terminal context access network terminal identifier according to the obtained access network terminal identifier, and reconfigures the service area information for the terminal.
It should be noted that the access network terminal identifier may be obtained from the connection update request message, or may be obtained from the access point interface signaling, which is not limited to this.
It should be noted that, the central unit may determine the location information of the terminal according to the access point that receives the connection update request, or may carry the current location information of the terminal through the connection update request message, which is not limited to this.
Step 603, the central unit sends a connection update response message to the terminal, wherein the service area information newly allocated to the terminal by the central unit can be carried.
Step 604, the terminal sends a connection update complete message to the central unit.
The embodiment of the invention can realize that the user plane functional entity obtains the context information required by the user plane processing after the control plane function is separated from the user plane function, and can be applied to the future 5G access network.
Fifth embodiment
In connection with the network architecture in the application scenario of fig. 2, a service center unit replacement procedure according to an exemplary embodiment of the present invention is described below with reference to fig. 7.
In this embodiment, after the terminal moves out of the service area of the original central unit, the central unit needs to be replaced by the terminal, and the control plane function of the terminal is transferred to the new central unit in the replacement process of the central unit. In the central unit replacement process, the new central unit serving the terminal will obtain the context information of the terminal from the original service central unit.
Step 701, according to the broadcast information of the air interface system, after the terminal judges that the terminal moves out of the service area, the terminal sends a connection updating request to the network side. And the transmission point randomly selects a new central unit for the terminal again if the transmission point does not establish connection with the central unit reported by the terminal according to the central unit identification information in the terminal identification.
Step 702, the new central unit determines the original service central unit of the terminal according to the central unit identification information in the obtained access network terminal identification. The new central unit reconfigures the service area information for the terminal after obtaining the context information of the terminal from the original central unit. In addition, the new central unit reallocates an access network terminal identifier for the terminal, wherein the identifier information of the new central unit is carried.
It should be noted that the access network terminal identifier may be obtained from the connection update request message, or may be obtained from the access point interface signaling, which is not limited to this.
It should be noted that, the central unit may determine the location information of the terminal according to the access point that receives the connection update request, or may carry the current location information of the terminal through the connection update request message, which is not limited to this.
Step 703, after the terminal saves the configuration information obtained from the control plane function of the central unit, it sends a connection establishment completion message to the control plane function of the central unit.
Step 704, if the control plane function of the central unit determines that the terminal needs to activate the security function, the control plane function may send a security activation indication to the terminal. After the security function is activated, the control plane messages and the user plane data need to be processed in security.
Step 705, after confirming the security context activation, the terminal sends a security activation completion message to the control plane function. After the security up-down activation, the signaling of the uplink and downlink control plane can be transmitted only after security related processing.
And the new central unit or the original central unit triggers the core network to update the service central unit information in the terminal context stored by the core network.
The embodiment of the invention can realize that the user plane functional entity obtains the context information required by the user plane processing after the control plane function is separated from the user plane function, and can be applied to the future 5G access network.
Sixth embodiment
Referring to fig. 8, an apparatus for accessing a terminal is shown, which is suitable for a central unit in a network architecture, and the network architecture further includes: a transmission point connected to the central unit, the central unit comprising: control plane functions and user plane functions, the transmission point comprising: user plane functionality, the apparatus 800 comprising:
a first receiving module 801, configured to receive a connection establishment request from a terminal forwarded by a user plane function of a transmission point;
a first configuration module 802, configured to allocate an access network terminal identifier to the terminal, and configure service area information for the terminal;
a first sending module 803, configured to send a connection establishment response message to the terminal, where the connection establishment response message carries the access network terminal identifier and the service area information;
a second receiving module 804, configured to receive a connection establishment completion message sent by the terminal.
Optionally, the first configuration module is further configured to: verifying the identity of the terminal to obtain a verification result; and if the verification result is that the verification is passed, distributing an access network terminal identifier for the terminal, and configuring service area information for the terminal.
Optionally, the apparatus further comprises:
the judging module is used for judging whether the terminal needs to activate the safety function or not;
the second sending module is used for sending a security activation instruction to the terminal if the terminal needs to activate the security function;
and the third receiving module is used for receiving the security activation completion message sent by the terminal.
Optionally, the apparatus further comprises:
a fourth receiving module, configured to receive a connection update request forwarded by the user plane function of the transmission point;
a second configuration module, configured to determine a terminal context according to the obtained access network terminal identifier, and configure new service area information for the terminal;
a third sending module, configured to send a connection update response message to the terminal, where the connection update response message carries the new service area information;
and the fifth receiving module is used for receiving the connection updating completion message sent by the terminal.
Optionally, the access network terminal identifier is obtained from the connection update request or from interface signaling of the transmission point.
The embodiment of the invention can realize that the user plane functional entity obtains the context information required by the user plane processing after the control plane function is separated from the user plane function, and can be applied to the future 5G access network.
Seventh embodiment
Referring to fig. 9, an apparatus for accessing a terminal is shown, which is suitable for a terminal in a network architecture, where the network architecture further includes: a central unit and a transmission point connected to the central unit, the central unit comprising: control plane functions and user plane functions, the transmission point comprising: user plane functionality, the apparatus 900 comprising:
a fourth sending module 901, configured to send a connection establishment request through a wireless interface, where the connection establishment request is forwarded to a control plane function of the central unit by a user plane function on a network side, and specifically, is used to send the connection establishment request to the user plane function of the transmission point, and the user plane function of the transmission point forwards the connection establishment request to the control plane function of the central unit;
a sixth receiving module 902, configured to receive a connection establishment response message of a wireless interface, where the connection establishment response message is sent after being assembled by a control plane function of a central unit on a network side, and carries an access network terminal identifier allocated to a terminal by the control plane function of the central unit, and service area information configured for the terminal, and specifically, is used to receive the connection establishment response message sent by the control plane function of the central unit, and the connection establishment response message carries the access network terminal identifier allocated to the terminal by the control plane function of the central unit, and the service area information configured for the terminal;
a fifth sending module 903, configured to send a connection setup complete message through a wireless interface, specifically, send the connection setup complete message to a control plane function of the central unit.
Optionally, the apparatus further comprises:
a seventh receiving module, configured to receive a security activation indication of a wireless interface, where the security activation indication is sent by a control plane function of the central unit, and specifically, is used to receive the security activation indication sent by the control plane function of the central unit;
a sixth sending module, configured to send a security activation complete message through a wireless interface, and specifically, send a security activation complete message to a control plane function of the central unit.
Optionally, the apparatus further comprises:
a seventh sending module, configured to send a connection update request through a wireless interface, where the connection update request is forwarded by the user plane function of the transmission point to the control plane function of the central unit, and specifically, is used to send the connection update request to the user plane function of the transmission point, and forward the connection update request to the control plane function of the central unit by the user plane function of the transmission point;
an eighth receiving module, configured to receive a connection update response message of a wireless interface, where the connection update response message is assembled by a control plane function of a central unit on a network side and then sent, where the connection update response message carries new service area information, and the new service area information is configured for the terminal by the control plane function of the central unit according to an obtained identifier of an access network terminal, and specifically, is configured to receive the connection update response message sent by the control plane function of the central unit, where the connection update response message carries new service area information, and the new service area information is configured for the terminal by the control plane function of the central unit according to the obtained identifier of the access network terminal;
an eighth sending module, configured to send a connection update completion message through a wireless interface, and specifically, send the connection update completion message to a control plane function of the central unit.
Optionally, the apparatus further comprises:
a ninth sending module, configured to send a connection update request to the user plane function of the transmission point through a wireless interface, where the user plane function of the transmission point reselects a new central unit for the terminal, and specifically, the ninth sending module is configured to send a connection update request to the user plane function of the transmission point, and the user plane function of the transmission point reselects a new central unit for the terminal;
a ninth receiving module, configured to receive a connection update response message of a wireless interface, where the connection update response message is sent after being assembled by a control plane function of a new central unit, and the connection update response message carries an access network terminal identifier allocated to the terminal and new service area information by the control plane function of the new central unit, and specifically, is used to receive a connection update response message sent by the control plane function of the new central unit, and the connection update response message carries an access network terminal identifier allocated to the terminal and new service area information by the control plane function of the new central unit;
a tenth sending module, configured to send a connection update complete message through a wireless interface, and specifically, send a connection update complete message to the control function of the new central unit.
Optionally, the apparatus further comprises:
a tenth receiving module, configured to receive a security activation indication of a wireless interface, where the security activation indication is sent by the control plane function of the new central unit, and specifically, is used to receive the security activation indication sent by the control plane function of the new central unit;
an eleventh sending module, configured to send a security activation complete message through a wireless interface, and specifically, send a security activation complete message to a control plane function of the new central unit.
The embodiment of the invention can realize that the user plane functional entity obtains the context information required by the user plane processing after the control plane function is separated from the user plane function, and can be applied to the future 5G access network.
Eighth embodiment
The present embodiment provides a network architecture, including: the system comprises a central unit and a transmission point, wherein the central unit comprises a control plane function and a user plane function, and the transmission point comprises a user plane function;
the user plane function of the transmission point receives a connection establishment request sent by a terminal;
the control plane function of the central unit is used for receiving a connection establishment request from a terminal forwarded by the user plane function of the transmission point;
the control plane function of the central unit is also used for distributing an access network terminal identifier for the terminal and configuring service area information for the terminal;
the control plane function of the central unit is further configured to send a connection establishment response message to the terminal, where the connection establishment response message carries the access network terminal identifier and the service area information;
the control plane function of the central unit is further configured to receive a connection establishment completion message sent by the terminal.
It should be noted that the transmission point and the central unit in the network architecture in this embodiment can execute the flows shown in fig. 3 to fig. 7, which are not described herein again.
The embodiment of the invention can realize that the user plane functional entity obtains the context information required by the user plane processing after the control plane function is separated from the user plane function, and can be applied to the future 5G access network.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
In addition, the terms "system" and "network" are often used interchangeably herein.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the preferred embodiments of the present invention have been described, it should be understood that modifications and adaptations to those embodiments may occur to one skilled in the art without departing from the principles of the present invention and are within the scope of the present invention.