CN110519842B - Communication method and device - Google Patents
Communication method and device Download PDFInfo
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- CN110519842B CN110519842B CN201910808996.1A CN201910808996A CN110519842B CN 110519842 B CN110519842 B CN 110519842B CN 201910808996 A CN201910808996 A CN 201910808996A CN 110519842 B CN110519842 B CN 110519842B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a communication method and a device, wherein the communication method comprises the following steps: the control function acquires the information of the terminal from the information management function; the control function triggers a connection establishment process or a paging operation for the terminal according to the information of the terminal, so that signaling overhead is reduced, for example, after the terminal of a plurality of network slices connected simultaneously enters an idle state in each network slice, each network slice can be prevented from paging the UE respectively.
Description
The present application is a divisional application of patent applications filed 2016, 19.2. 201610094055.2 entitled "a communication method and apparatus".
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communication method and apparatus.
Background
While a Mobile communication network supports a conventional Mobile Broadband (MBB) scenario, it also needs to support a new scenario. New scenarios place different demands on the network, e.g. different demands on functions like charging, policy control, security and mobility. Mobile broadband scenarios may require application-dependent charging and policy control, whereas other scenarios may require simpler charging or policy.
To better support different scenarios, it is necessary to isolate the traffic of the different scenarios. For example, a large number of electronic sensor failures cannot affect MBB users. By means of network slicing techniques, a single physical network can be divided into multiple virtual networks, providing optimal support for different services used by different user groups. The definition of network Slice (Slice) is as follows: the network slice consists of three layers: a service instance layer, a network slice instance layer and a resource layer. As shown in fig. 1, the three layers are described as follows: (1) the service instance layer represents the supported service (end user service or business service). Each service instance represents a service. Generally, services may be provided by a network operator or a third party. Thus, a service instance may represent an operator service or a service provided by a third party. (2) The network slice instance provides the service instance with its required network characteristics. Multiple service instances provided by a network operator may share one network slice instance. The network slice instances may include 0, 1, or more subnet instances that may be shared by other network slice instances. A subnet instance consists of a set of network functions that run on top of physical/logical resources. (3) The resource layer comprises physical resources and logical resources. Where the physical resource is a collection of computers, storage and transmission resources (including radio access). A logical resource is a physical resource that is either specifically partitioned for a network function or shared by a group of network functions. Each network slice includes a set of logical network functions that support the communication traffic needs of a particular scenario. The logical function may be a location management function, a handover control function, a session management function, etc. The specific logic functions included in the network slice are different according to the services provided by the network slice, for example, a slice supporting mobile broadband services needs to support the three functions, while a slice supporting internet-of-things services does not need to support a location management function and a handover control function.
Referring to fig. 2, a paging procedure in the prior art is shown, which includes the following specific steps:
After the service request process is finished, the Data connection is successfully established, and the SGW sends the buffered Downlink Data to the UE (Downlink Data E-UTRN).
Referring to fig. 3, a service request process in the prior art is shown, which includes the following specific steps:
According to the existing method, when a network receives a data packet of idle-state UE, the network triggers the UE to enter a connected state through paging operation, and then sends data to the UE. Each network slice behaves as an independent network since each network slice provides a different service to the terminal. When a terminal is connected to multiple network slices, if the terminal is in an idle state, each network slice will perform paging operation when receiving downlink data of the terminal, which may result in a large amount of overhead of air interface resources.
Disclosure of Invention
In view of the above technical problems, the present invention provides a communication method and apparatus to reduce signaling overhead.
According to an aspect of the present invention, there is provided a communication method including: the control function acquires the information of the terminal from the information management function; and the control function triggers a connection establishment process or a paging operation for the terminal according to the information of the terminal.
Optionally, the obtaining, by the control function, the information of the terminal from the information management function includes: the control function sends a first request message to the information management function, wherein the first request message carries an identifier of a terminal; the control function receives a first reply message returned by the information management function, where the first reply message carries information of the terminal, where the information of the terminal includes: status information and/or location information.
Optionally, the triggering, by the control function, a paging operation for the terminal according to the information of the terminal includes triggering, by the control function, a paging operation for the terminal when the terminal is in an idle state or when the location information of the terminal is a tracking area list.
Optionally, the triggering, by the control function, a connection establishment procedure for the terminal according to the information of the terminal includes: and when the terminal is in a connected state or the position information of the terminal is the information of the access equipment connected with the terminal, the control function sends a connection establishment request message to the access equipment connected with the terminal according to the position information in the information of the terminal.
Optionally, the communication method further includes: and the control function sends a second request message to the information management function, and the information management function sends a third request message to the terminal to trigger the terminal to initiate a service request process, wherein the third request message carries information of a network slice where the control function is located.
Optionally, the communication method further includes: the control function sends a first notification message to the information management function, wherein the first notification message comprises: identification of the terminal, status information and/or location information.
Optionally, the communication method further includes: when the control function detects that the state of the terminal is changed, the control function sends a second notification message to the information management function, wherein if the terminal enters a connected state, the second notification message comprises: identification, status information and/or location information of the terminal; if the terminal enters an idle state, the second notification message includes: identification of the terminal and status information.
Optionally, the communication method further includes: when the control function detects that the position of the terminal is changed, the control function sends a third notification message to the information management function, wherein the third notification message comprises: identification of the terminal and location information.
Optionally, the communication method further includes: the control function detects whether or not there is a right to send the information of the terminal to the information management function.
According to another aspect of the present invention, there is also provided a communication method, including: the information management function sends terminal information to a control function, and the control function triggers a connection establishment process or paging operation for the terminal according to the terminal information; or the information management function indicates the terminal to initiate a service request process according to the stored terminal information.
Optionally, the instructing, by the information management function, the terminal to initiate a service request process according to the stored information of the terminal, includes: and the information management function sends a second request message to the terminal according to the stored terminal information to indicate the terminal to initiate a service request process, wherein the second request message carries the information of the network slice where the control function is located.
Optionally, the communication method further includes: when the terminal enters an idle state in a network slice where the control function is located, the information management function receives the state information of the terminal sent by the control function; and the information management function modifies the stored state information of the terminal in the network slice into an idle state.
Optionally, the communication method further includes: the information management function selects one network slice from a plurality of network slices in a connected state of the terminal, and the control function of the selected network slice transmits information of the terminal to the information management function.
According to still another aspect of the present invention, there is also provided a communication apparatus including: the acquisition module is used for acquiring the information of the terminal from the information management function; and the triggering module is used for triggering a connection establishment process or a paging operation for the terminal according to the information of the terminal.
Optionally, the obtaining module is further configured to: sending a first request message to the information management function, wherein the first request message carries an identifier of a terminal; receiving a first reply message returned by the information management function, where the first reply message carries information of the terminal, where the information of the terminal includes: status information and/or location information.
Optionally, the triggering module is further configured to trigger a paging operation for the terminal when the terminal is in an idle state or when the location information of the terminal is a tracking area list.
Optionally, the triggering module is further configured to send a connection establishment request message to the access device connected to the terminal according to the location information in the terminal information when the terminal is in a connected state or when the location information of the terminal is information of the access device connected to the terminal.
Optionally, the communication device further comprises:
a second request message sending module, configured to send a second request message to the information management function, where the information management function sends a third request message to the terminal to trigger the terminal to initiate a service request process, where the third request message carries information of a network slice where the control function is located.
Optionally, the communication device further comprises:
a first notification message sending module, configured to send a first notification message to the information management function, where the first notification message includes: identification of the terminal, status information and/or location information.
Optionally, the communication device further comprises:
a second notification message sending module, configured to send a second notification message to the information management function when detecting that the state of the terminal changes, where, if the terminal enters a connected state, the second notification message includes: identification, status information and/or location information of the terminal; if the terminal enters an idle state, the second notification message includes: identification of the terminal and status information.
Optionally, the communication device further comprises:
a third notification message sending module, configured to send a third notification message to the information management function when detecting that the location of the terminal changes, where the third notification message includes: identification of the terminal and location information.
Optionally, the communication device further comprises:
and the permission judging module is used for detecting whether the permission of sending the information of the terminal to the information management function exists.
According to yet another aspect of the present invention, there is also provided a control function comprising a communication device as described above.
According to still another aspect of the present invention, there is also provided a communication apparatus including: the information sending module is used for sending the information of the terminal to a control function, and the control function triggers a connection establishment process or a paging operation for the terminal according to the information of the terminal; and/or an indication module, configured to indicate the terminal to initiate a service request process according to the stored information of the terminal.
Optionally, the indication module is further configured to: and sending a second request message to the terminal according to the stored terminal information, and indicating the terminal to initiate a service request process, wherein the second request message carries information of the network slice where the control function is located.
Optionally, the communication device further comprises:
the state information modification module is used for receiving the state information of the terminal sent by the control function when the terminal enters an idle state in a network slice where the control function is located; and modifying the stored state information of the terminal in the network slice into an idle state.
Optionally, the communication device further comprises:
and the control function selection module is used for selecting one network slice from the plurality of network slices of the terminal in the connection state, and sending the information of the terminal to the information management function by the control function of the selected network slice.
According to still another aspect of the present invention, there is also provided an information management function including the communication apparatus as described above.
The beneficial effects of the invention are: the control function acquires the information of the terminal from the information management function, and triggers a connection establishment process or a paging operation for the terminal according to the information of the terminal, so that signaling overhead is reduced, and for example, after the terminal of a plurality of network slices connected simultaneously enters an idle state in each network slice, each network slice can be prevented from paging the UE respectively.
Drawings
FIG. 1 is a schematic diagram of a prior art network slice;
FIG. 2 is a diagram illustrating a conventional paging process;
fig. 3 is a schematic diagram of a conventional service request process;
FIG. 4 is a block diagram illustrating a terminal simultaneously connected to multiple network slices according to the present invention;
FIG. 5 is a schematic diagram of the connection of the information management function of the present invention to one of a plurality of network slices;
fig. 6 is a flow chart of a communication method in a first embodiment of the present invention;
fig. 7 is a flowchart of a connection establishment procedure or a paging procedure in the first embodiment of the present invention;
fig. 8 is a flowchart of service request initiation to a UE in the first embodiment of the present invention;
fig. 9 is a schematic diagram illustrating a process of acquiring terminal information by an information management function according to a second embodiment of the present invention;
FIG. 10 is a diagram illustrating a process of obtaining status information by an information management function according to a third embodiment of the present invention;
FIG. 11 is a diagram illustrating a process of obtaining status information by an information management function according to a fourth embodiment of the present invention;
fig. 12 is a diagram illustrating a process in which an information management function can select one of a plurality of network slices in which a terminal is in a connected state according to a fifth embodiment of the present invention;
FIG. 13 is a schematic illustration of paging in a sixth embodiment of the present invention;
fig. 14 is a diagram illustrating a process of performing connection establishment according to a seventh embodiment of the present invention;
fig. 15 is a schematic diagram of a process of initiating a service request in a ninth embodiment of the present invention;
fig. 16 is a flowchart of a communication method of a tenth embodiment of the present invention;
fig. 17 is a schematic structural diagram of a communication apparatus according to an eleventh embodiment of the present invention;
fig. 18 is a schematic structural diagram of a communication device according to a twelfth embodiment of the present invention;
fig. 19 is a schematic structural diagram of a communication device in a fifteenth embodiment of the present invention;
fig. 20 is a schematic structural diagram of a communication device according to a sixteenth embodiment of the present invention.
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.
Referring to fig. 4, there is shown an architectural diagram of a terminal simultaneously connecting to a plurality of network slices (e.g., a first network slice, a second network slice, … …, an nth network slice), wherein each network slice is connected to an application server, each network slice comprising: the control function provides specific services for users by controlling the user plane function, and the control functions of different network slices may be different because the services provided by different network slices are different. In particular, the control function may support mobility management, session management, or handover control functions, among other functions. The user plane function is mainly responsible for routing the data of the terminal, such as: the user plane function may be a gateway in an existing network.
With continued reference to fig. 4, the first access network and the second access network shown in the figure may be access networks formed using different access technologies (e.g., LTE (Long Term Evolution), WLAN (wireless local area network), etc.), and the access networks may be composed of one or more access devices, such as base stations. In this embodiment, a base station generally refers to a device in a radio Access network that accesses a terminal to the network through a radio interface, for example, an eNB (evolved Node B) in LTE, a wireless network Access device (implementing a function similar to the eNB) in a future 5G network, an AP (Access Point) of WLAN or a TWAG (trusted radio Access gateway), and the like.
Referring to fig. 5, the information management function shown in the figure is used for storing the information of the terminal, wherein the information of the terminal may include: the state information and/or the location information, for example, the state information of the terminal may be in an idle state or a connected state, and if the terminal is in the connected state, the information management function further stores the location information of the terminal, for example, the location information or the identifier of the access device to which the terminal is connected, or the identifier of the cell in which the terminal is located. The information management function may interact with the control function in the network slice and the access device in the access network to obtain the information of the terminal, and the specific connection is as shown in fig. 5. It should be noted that fig. 5 only illustrates the information management function interacting with the control function in one network slice, but it is understood that the information management function may be shared by a plurality of network slices.
First embodiment
Referring to fig. 6, a flow of a communication method is shown, where an execution subject of the communication method may be a control function in a network slice, and the specific steps are as follows:
Specifically, in step 601, the control function sends a first request message to the information management function, where the first request message carries an identifier of the terminal; the control function receives a first reply message returned by the information management function, wherein the first reply message carries information of the terminal, and the information of the terminal comprises: the information management function stores state information (connected state) and valid location information when the terminal is in the connected state, for example, the location information may be location information or an identifier of an access device to which the terminal is connected, or an identifier of a cell in which the terminal is located. When the terminal is in an idle state, no valid location information is stored in the information management function, for example, state information (idle state) and a tracking area list of the terminal are stored in the information management function.
Step 602, the control function triggers a connection establishment procedure or a paging operation for the terminal according to the information of the terminal.
Optionally, in step 602, when the terminal is in an idle state, or when the location information of the terminal is a tracking area list, the control function triggers a paging operation for the terminal, or when the terminal is in a connected state, or when the location information of the terminal is information (such as an identifier or an IP address of a base station, etc.) of an access device to which the terminal is connected, the control function sends a connection establishment request message to the access device to which the terminal is connected according to the location information in the information of the terminal, and then instructs the access device to establish a radio bearer for the terminal, where the access device may be a base station, but is not limited thereto.
Referring to fig. 7, a flowchart of a connection establishment procedure or a paging procedure in the first embodiment is shown, and the specific steps are as follows:
step 701, a user plane function in a network slice receives downlink data of a user;
step 702, the user plane function sends a downlink data notification message to the control function;
step 703, the control function sends a first request message to the information management function, where the message carries an identifier of the terminal, such as an IMSI (International Mobile Subscriber identity Number) or another newly defined identifier;
step 704, the information management function returns a first reply message to the control function, where the message carries the information of the terminal.
And according to different information of the terminal carried in the first reply message, the behavior of the control function is different. If the control function determines that the state of the terminal is a connection state, or the control function determines that the received information of the terminal includes valid location information (for example, the location information is an identifier of the access device or a cell identifier), the control function triggers a connection establishment procedure. The subsequent process is as follows: the control function sends a connection establishment request message (for example, an initial context establishment request message in the prior art) to an access device connected to the terminal, requests the access device to establish an air interface connection for the terminal (that is, an air interface is established for the connection established by the terminal in the network slice), and after establishing the air interface for the connection, the access device returns a connection establishment reply message (for example, an initial context establishment completion message in the prior art) to the control function, and the control function sends the information of the access device to the user plane function.
If the control function judges that the terminal is in an idle state or when the position information of the terminal is a tracking area list, the control function triggers paging operation.
It should be noted that, if the current network slice connected to the terminal receives downlink data of the terminal and the terminal enters a connected state in another network slice connected to the terminal, the information management function stores location information of the terminal, for example, information of a base station, and the information management function may send a message to the UE, so that the UE initiates a service request process. Specifically, the control function sends a second request message to the information management function, and the information management function sends a third request message to the terminal to trigger the terminal to initiate a service request process, where the third request message carries information of a network slice where the control function is located.
Referring to fig. 8, which shows a flowchart of initiating a service request to a UE in the first embodiment, in fig. 8, the second reply message in step 804 and the third reply message in step 806 may be acknowledgement messages. The second request message of step 803 may carry information of the network slice (e.g. slice identifier, identifier of control function, service identifier, or APN) where the downlink data is received. If the information management function can deduce from the source IP address of the second request message of step 803 the network slice that sent the message, no parameters may be carried in the second request message of step 803.
The third request message in step 805 carries information of the network slice where the control function is located (or information of the network slice where the downlink data is received), such as a slice identifier, an identifier of the control function, a service identifier, or an APN.
The terminal in step 807 may determine that a connection establishment procedure needs to be initiated to the corresponding control function according to the third request message.
Second embodiment
On the basis of the first embodiment, the following describes a procedure for acquiring terminal information by the information management function. Referring to fig. 9, a process of acquiring terminal information by the information management function is shown, and the specific process is as follows:
step 901, the control function sends a first notification message to the information management function, where the first notification message at least carries an identifier of the terminal.
It should be noted that the first notification message may further include status information, location information, and/or information of a network slice where the control function is located, where the status information may be in a connected state or an idle state; the location information may be information of an access device to which the terminal is connected, a tracking area list, or an identifier of a cell in which the terminal is located; the information of the network slice may be a slice identifier or APN (Access Point Name) or other newly defined identifier.
Step 902, the information management function returns a first acknowledgement message to the control function.
Third embodiment
On the basis of the first embodiment, a process of acquiring terminal information by the information management function is described below. Referring to fig. 10, a process of acquiring terminal information by the information management function is shown, and the specific process is as follows:
step 1001, the control function detects whether the state information of the terminal changes, and when the control function finds that the state information of the terminal changes, the control function sends a second notification message to the information management function.
And the parameters of the second notification message are different according to different states of the terminal. If the terminal enters the connected state, the parameters of the second notification message at least comprise: the identity, state information (e.g., connection state), and/or location information (e.g., base station identity or cell identity) of the terminal, in which case the second notification message may also include information of the network slice in which the control function is located, such as a slice identity or APN. If the terminal enters the idle state, the parameters of the second notification message at least include the identifier and the state information of the terminal (idle state), and at this time, the second notification message may further include information of the network slice where the control function is located, such as a slice identifier or an APN.
Step 1002, the information management function stores the information of the terminal and returns a second confirmation message to the control function.
Fourth embodiment
On the basis of the first embodiment, a procedure in which the information management function acquires the location information is described. When the UE in the connected state moves (for example, the base station to which the UE is connected changes), the control function within the network slice needs to notify the information management function of the information. The specific process is shown in fig. 11.
Step 1101, the control function detects whether the location information has changed, and when the control function finds that the location information has changed (for example, a base station to which the terminal is connected has changed), the control function sends a third notification message to the information management function.
The parameters of the third notification message at least include the identity and location information (e.g. base station identity or cell identity) of the terminal, and in this case, the third notification message may also include information of the network slice in which the control function is located, such as a slice identity or APN.
Step 1102, the information management function updates the information of the terminal and returns a third confirmation message to the control function.
Fifth embodiment
When a terminal enters a connected state in multiple network slices, if information of the terminal changes (for example, a base station to which the terminal is connected changes due to movement of the terminal), the information management function needs to be notified of the changed location information. Since the plurality of network slices can all sense the event, if the network slices all send messages to the information management function, there is a problem of signaling waste. In this embodiment, the information management function may select one of the multiple network slices in the connected state of the terminal, and the control function of the selected network slice needs to report the information of the terminal to the information management function.
Based on the third embodiment, when the control function in the network slice indicates to the information management function that the terminal enters the connected state, and the information management function returns a second acknowledgement message to the control function, optionally, the second acknowledgement message carries indication information indicating whether it is needed to report location information subsequently. If the indication information indicates that reporting is required, the control function in the network slice needs to execute the process of the fourth embodiment; otherwise, the control function within the network slice does not need to perform the process of the fourth embodiment.
For the control function specified by the information management function, if the network slice where the terminal is located in the control function enters the idle state, the information management function needs to determine whether the terminal is in the connected state in another network slice, if so, the information management function selects one of the network slices, and the control function in the network slice reports the information of the terminal, and the specific process is as shown in fig. 12. Otherwise, the information management function does not perform any operation.
Step 1201, the information management function sends a fourth notification message to the control function, which indicates to the control function that the control function needs to report the information (e.g. location information) when the information of the terminal changes.
Step 1202, the control function returns a fourth acknowledgement message to the information management function.
Sixth embodiment
This embodiment describes that a network slice receives downlink data of a terminal, and a control function within the network slice does not receive valid location information from an information management function and performs a procedure of paging a UE.
The scenario in which this process may occur is as follows:
scene 1, the information management function does not store effective position information, that is, the position information of the terminal is not stored or the position information of the terminal stored by the terminal management function is a tracking area list of the terminal, and the terminal is in an idle state in all network slices;
scenario 2 and the information management function store the location information of the terminal, but the base station to which the terminal is connected cannot be connected to the network slice, and for example, there is no connection between the base station and the network slice. The information management function can judge whether a base station connected with the terminal is connected with a certain network slice or not through the configuration information.
Referring to fig. 13, a schematic diagram of paging is shown, which includes the following specific steps:
step 1301, a user plane function in the network slice receives downlink data of a user;
step 1302, the user plane function sends a downlink data notification message to the control function;
step 1303, the control function sends a fifth request message to the information management function, where the fifth request message carries an identifier of the terminal, such as an IMSI or another newly defined identifier;
in step 1304, the information management function returns a fifth reply message to the control function, where the fifth reply message carries a prompt message indicating to the control function that there is no valid location information, or the fifth reply message carries the status information (idle state) of the terminal, or the fifth reply message carries the location information (tracking area list) of the terminal.
Step 1305, the control function sends a paging message to the access device. The paging message may carry information of the network slice in which the control function is located. The extent to which the control function sends the paging message may be similar to existing mechanisms, i.e. sending the paging message to access devices within all TAs in a TA (Tracking Area) list.
Seventh embodiment
This embodiment describes a process in which a network slice receives downlink data of a terminal, and a control function in the network slice receives location information from an information management function to perform connection establishment. This process occurs in a scenario where the information management function stores location information, e.g. the terminal has entered a connected state within another network slice. If the base station deployed by the operator cannot connect all the network slices, the information management function further needs to further determine whether the access device connected to the terminal is connected to the network slice. The specific process is shown in fig. 14.
1401, a user plane function in a network slice receives downlink data of a user;
step 1402, the user plane function sends a downlink data notification message to the control function;
step 1403, the control function sends a sixth request message to the information management function, where the sixth request message carries an identifier of the terminal, such as an IMSI or another newly defined identifier;
step 1404, the information management function returns a sixth reply message to the control function, where the sixth reply message carries the location information of the terminal, such as information of a base station connected to the terminal or a cell identifier.
Step 1405, the control function sends an initial context setup request message to the base station.
Step 1406, the base station establishes a radio bearer for the UE.
Step 1407, the base station returns the initial context setup complete message to the control function.
Step 1408, the control function sends a modify bearer request message to the user plane function.
Step 1409 the user plane function returns a modify bearer reply message to the control function.
Description of the drawings: steps 1405 to 1409 in the figure are all existing messages. If the base station does not know the information of the control function within the network slice, the step 1405 needs to be extended, and the initial context setup message of the step 1405 needs to be extended if the base station does not know the information of the network slice where the control function is located.
Eighth embodiment
Scene assumption is as follows: the terminal is in a connected state in the network slice 1 and the network slice 2 and is in an idle state in the network slice 3; the terminal is connected to the network slice 1 through the base station 1 and connected to the network slice 2 through the base station 2; the information stored in the information management function may include: < network slice 1: connected state, base station 1>, < network slice 2: connected state, base station 2 >; the network slice 3 receives downlink data of the terminal.
The control function within the network slice 3 receives location information, i.e. location information of base station 1 and location information of base station 2, from the information management function. The control function within the network slice 3 selects an access device (base station, e.g. closest to SGW-U) with the shortest routing path and initiates the connection establishment procedure. And if the establishment fails, selecting the suboptimal base station to establish the connection.
Ninth embodiment
In this embodiment, a certain network slice receives downlink data of a terminal, and the terminal enters a connected state in another network slice at this time, and the information management function stores location information of the terminal, such as information of a base station. The information management function triggers the terminal to initiate a service request process to establish a user plane connection. The specific process is shown in fig. 15.
Step 1501, receiving downlink data of a user by a user plane function in a network slice;
step 1502, the user plane function sends a downlink data notification message to the control function;
step 1503, the control function sends a downlink data notification message to the information management function;
step 1504, the information management function returns a DDN acknowledge message to the control function.
Step 1505, the information management function sends a seventh request message to the terminal, where the seventh request message carries information related to the slice, such as the service type, the identifier or IP address of the control function in the slice, or the slice identifier.
Step 1506, the terminal returns a seventh confirmation message to the information management function.
Step 1507, the terminal initiates a service request procedure.
In the above scenario, if the terminal does not enter the connected state in another network slice, the step in the virtual frame is not executed (steps 1505-1507), and in step 1504, the fifth acknowledgement message returned by the information management function to the control function carries a reason or a reason value, which indicates that the terminal does not enter the connected state in another network slice. At this time, the control function initiates a paging operation.
Tenth embodiment
Referring to fig. 16, a flow of a communication method in the tenth embodiment is shown, the communication method including:
Specifically, the information management function sends a second request message to the terminal according to the stored information of the terminal, and instructs the terminal to initiate a service request process, where the second request message carries information of a network slice where the control function is located.
Optionally, the communication method further includes: when the terminal enters an idle state in a network slice where the control function is located, the information management function receives the state information of the terminal sent by the control function; and the information management function modifies the stored state information of the terminal in the network slice into an idle state.
Optionally, the communication method further includes: the information management function selects one network slice from a plurality of network slices in which the terminal is in a connected state, and the control function of the selected network slice transmits information of the terminal to the information management function.
Eleventh embodiment
Referring to fig. 17, a schematic diagram of a communication apparatus is shown, wherein the communication apparatus 170 includes: an obtaining module 171, configured to obtain information of the terminal from the information management function; a triggering module 172, configured to trigger a connection establishment procedure or a paging operation for the terminal according to the terminal information.
In this embodiment, optionally, the obtaining module 171 is further configured to: sending a first request message to the information management function, wherein the first request message carries an identifier of a terminal; receiving a first reply message returned by the information management function, where the first reply message carries information of the terminal, where the information of the terminal includes: status information and/or location information.
In this embodiment, optionally, the triggering module 172 is further configured to trigger a paging operation for the terminal when the terminal is in an idle state or when the location information of the terminal is a tracking area list.
In this embodiment, optionally, the triggering module 172 is further configured to, when the terminal is in a connected state, or when the location information of the terminal is information (for example, an identifier or an IP address of a base station) of an access device to which the terminal is connected, send a connection establishment request message to the access device to which the terminal is connected according to the location information in the information of the terminal.
In this embodiment, optionally, the communication device 170 further includes: a second request message sending module 173, configured to send a second request message to the information management function, where the information management function sends a third request message to the terminal to trigger the terminal to initiate a service request process, where the third request message carries information of a network slice where the control function is located.
In this embodiment, optionally, the communication device 170 further includes: a first notification message sending module 174, configured to send a first notification message to the information management function, where the first notification message includes: identification of the terminal, status information and/or location information.
In this embodiment, optionally, the communication device 170 further includes: a second notification message sending module 175, configured to send a second notification message to the information management function when detecting that the state of the terminal changes, where the second notification message includes, if the terminal enters a connected state: identification, status information and/or location information of the terminal; if the terminal enters an idle state, the second notification message includes: identification of the terminal and status information.
In this embodiment, optionally, the communication device 170 further includes: a third notification message sending module 176, configured to send a third notification message to the information management function when detecting that the location of the terminal changes, where the third notification message includes: identification of the terminal and location information.
In this embodiment, optionally, the communication device 170 further includes: and the permission judging module 177 is configured to detect whether there is a permission to send the information of the terminal to the information management function.
Twelfth embodiment
The present embodiment provides a control function comprising the communication device as described in the eleventh embodiment. The control function provides a specific service to the user by controlling the user plane function, and the control functions of different network slices may be different because the services provided by different network slices are different. In particular, the control function may support mobility management, session management, or handover control functions, among other functions. The user plane function is mainly responsible for routing the data of the terminal, such as: the user plane function may be a gateway in an existing network.
Thirteenth embodiment
Referring to fig. 18, a schematic diagram of a communication device is shown, wherein the communication device 180: an information sending module 181, configured to send information of a terminal to a control function, where the control function triggers a connection establishment procedure or a paging operation for the terminal according to the information of the terminal; and/or an indicating module 182, configured to indicate the terminal to initiate a service request process according to the stored information of the terminal.
In this embodiment, optionally, the indicating module 182 is further configured to: and sending a second request message to the terminal according to the stored terminal information, and indicating the terminal to initiate a service request process, wherein the second request message carries information of the network slice where the control function is located.
In this embodiment, optionally, the communication device 180 further includes: a state information modification module 183, configured to receive, when the terminal enters an idle state in a network slice where the control function is located, state information of the terminal sent by the control function; and modifying the stored state information of the terminal in the network slice into an idle state.
In this embodiment, optionally, the communication device 180 further includes: a control function selection module 184, configured to select a network slice from the multiple network slices in the connected state of the terminal, and send the terminal information to the information management function by the control function of the selected network slice.
Fourteenth embodiment
The present embodiment provides an information management function including the communication apparatus as described in the thirteenth embodiment.
Fifteenth embodiment
In this embodiment a control function is provided comprising a communication device as described in the above eleventh embodiment.
Referring to fig. 19, a control function is shown comprising: a first processor 1901, a first memory 1902, and a first transceiver 1903, wherein
The first processor 1901 is configured to read the program in the first memory 1902, and performs the following processes: acquiring information of a terminal from an information management function; and triggering a connection establishment process or a paging operation for the terminal according to the information of the terminal.
The first transceiver 1903 is used for receiving and transmitting data under the control of the first processor 1901.
Optionally, the first processor 1901 is specifically configured to: sending a first request message to the information management function, wherein the first request message carries an identifier of a terminal; receiving a first reply message returned by the information management function, where the first reply message carries information of the terminal, where the information of the terminal includes: status information and/or location information.
Optionally, the first processor 1901 is specifically configured to: and when the terminal is in an idle state or the position information of the terminal is a tracking area list, triggering paging operation for the terminal.
Optionally, the first processor 1901 is specifically configured to: and when the terminal is in a connected state or the position information of the terminal is the information of the access equipment connected with the terminal, sending a connection establishment request message to the access equipment connected with the terminal according to the position information in the information of the terminal.
Optionally, the first processor 1901 is specifically configured to: and sending a second request message to the information management function, and sending a third request message to the terminal by the information management function to trigger the terminal to initiate a service request process, wherein the third request message carries information of a network slice where the control function is located.
Optionally, the first processor 1901 is specifically configured to: sending a first notification message to the information management function, wherein the first notification message comprises: identification of the terminal, status information and/or location information.
Optionally, the first processor 1901 is specifically configured to: when detecting that the state of the terminal is changed, the control function sends a second notification message to the information management function, wherein if the terminal enters a connected state, the second notification message comprises: identification, status information and/or location information of the terminal; if the terminal enters an idle state, the second notification message includes: identification of the terminal and status information.
Optionally, the first processor 1901 is specifically configured to: when detecting that the location of the terminal changes, the control function sends a third notification message to the information management function, where the third notification message includes: identification of the terminal and location information.
Optionally, the first processor 1901 is specifically configured to: and detecting whether the authority of sending the information of the terminal to the information management function is available.
Alternatively, the first processor 1901 may be a CPU (central processing unit), an ASIC (Application specific integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device).
In fig. 19, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by the first processor 1901 and various circuits of the memory represented by the first memory 1002 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The first transceiver 1903 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The first processor 1901 is responsible for managing a bus architecture and general processing, and the first memory 1902 may store data used by the first processor 1901 when performing operations.
Sixteenth embodiment
In the present embodiment, there is provided an information management function including the communication apparatus as described in the above-described thirteenth embodiment.
Referring to fig. 20, an information management function is shown, comprising: a second processor 2001, a second memory 2002 and a second transceiver 2003, wherein
The second processor 2001 is configured to read the program in the second memory 2002, and execute the following processes: sending terminal information to a control function, and triggering a connection establishment process or a paging operation for the terminal by the control function according to the terminal information; or indicating the terminal to initiate a service request process according to the stored terminal information.
The second transceiver 2003 is used to receive and transmit data under the control of the second processor 2001.
Optionally, the second processor 2001 is specifically configured to: and sending a second request message to the terminal according to the stored terminal information, and indicating the terminal to initiate a service request process, wherein the second request message carries information of the network slice where the control function is located.
Optionally, the second processor 2001 is specifically configured to: when the terminal enters an idle state in a network slice where the control function is located, receiving state information of the terminal sent by the control function; and modifying the stored state information of the terminal in the network slice into an idle state.
Optionally, the second processor 2001 is specifically configured to: the control function of the selected network slice sends the information of the terminal to the information management function.
Alternatively, the second processor 2001 may be a CPU (central processing unit), an ASIC (Application specific integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device).
Where in fig. 20 the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by the second processor 2001 and various circuits of the memory represented by the second memory 2002, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The second transceiver 2003 may be a number of elements including a transmitter and a receiver providing a means for communicating with various other apparatus over a transmission medium. The second processor 2001 is responsible for managing a bus architecture and general processing, and the second memory 2002 may store data used by the second processor 2001 in performing operations. 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.
Claims (14)
1. A method of communication, comprising:
the control function acquires the information of the terminal from the information management function;
the control function triggers a connection establishment process or a paging operation for the terminal according to the information of the terminal;
the control function triggers a connection establishment process for the terminal according to the information of the terminal, and the method comprises the following steps:
when the terminal is in a connection state or when the position information in the terminal information is the information of the access equipment connected with the terminal, the control function sends a connection establishment request message to the access equipment connected with the terminal;
wherein the information of the terminal includes: the terminal is connected with a plurality of network slices simultaneously, and the control function is the control function of the network slices.
2. The communication method according to claim 1, wherein the control function acquires information of the terminal from an information management function, comprising:
the control function sends a first request message to the information management function, wherein the first request message carries an identifier of a terminal;
and the control function receives a first reply message returned by the information management function, wherein the first reply message carries the information of the terminal.
3. The communication method according to claim 1, wherein the control function triggers a paging operation for the terminal according to the information of the terminal, comprising:
and when the terminal is in an idle state or when the position information of the terminal is a tracking area list, the control function triggers paging operation for the terminal.
4. The communication method according to claim 1, further comprising:
and the control function sends a second request message to the information management function, and the information management function sends a third request message to the terminal to trigger the terminal to initiate a service request process, wherein the third request message carries information of a network slice where the control function is located.
5. The communication method according to claim 1, further comprising:
the control function sends a first notification message to the information management function, wherein the first notification message comprises: identification of the terminal, status information and/or location information.
6. The communication method according to claim 1, further comprising:
when the control function detects that the state of the terminal is changed, the control function sends a second notification message to the information management function, wherein if the terminal enters a connection state, the second notification message comprises: identification, status information and/or location information of the terminal; if the terminal enters an idle state, the second notification message includes: identification of the terminal and status information.
7. The communication method according to claim 1, further comprising:
when the control function detects that the position of the terminal is changed, the control function sends a third notification message to the information management function, wherein the third notification message comprises: identification of the terminal and location information.
8. The communication method according to claim 6 or 7, characterized in that the communication method further comprises:
the control function detects whether or not there is a right to send the information of the terminal to the information management function.
9. A method of communication, comprising:
the method comprises the following steps that an information management function sends terminal information to a control function, the control function triggers a connection establishment process or paging operation for a terminal according to the terminal information, and the control function triggers the connection establishment process for the terminal according to the terminal information, and the method comprises the following steps: when the terminal is in a connected state or when the location information in the information of the terminal is the information of the access device connected to the terminal, the control function sends a connection establishment request message to the access device connected to the terminal, and the communication method further includes:
the information management function selects one network slice from a plurality of network slices of the terminal in a connected state, and the control function of the selected network slice sends the information of the terminal to the information management function; wherein the information of the terminal includes: the terminal is connected with a plurality of network slices simultaneously, and the control function is the control function of the network slices.
10. The communication method according to claim 9, further comprising:
when the terminal enters an idle state in a network slice where the control function is located, the information management function receives the state information of the terminal sent by the control function;
and the information management function modifies the stored state information of the terminal in the network slice into an idle state.
11. A communications apparatus, comprising:
the acquisition module is used for acquiring the information of the terminal from the information management function;
the triggering module is used for triggering a connection establishment process or a paging operation for the terminal according to the information of the terminal;
the triggering module is further used for sending a connection establishment request message to the access equipment connected with the terminal when the terminal is in a connection state or the position information in the information of the terminal is the information of the access equipment connected with the terminal;
wherein the information of the terminal includes: the terminal is connected with a plurality of network slices simultaneously, and the control function is the control function of the network slices.
12. A control function device comprising the communication device of claim 11.
13. A communications apparatus, comprising:
an information sending module, configured to send information of a terminal to a control function, where the control function triggers a connection establishment procedure or a paging operation for the terminal according to the information of the terminal, and the control function triggers the connection establishment procedure for the terminal according to the information of the terminal, including: when the terminal is in a connection state or when the position information in the terminal information is the information of the access equipment connected with the terminal, the control function sends a connection establishment request message to the access equipment connected with the terminal;
the communication apparatus further includes:
the control function selection module is used for selecting one network slice from a plurality of network slices of the terminal in a connection state, and sending the information of the terminal to the information management function by the control function of the selected network slice;
wherein the information of the terminal includes: the terminal is connected with a plurality of network slices simultaneously, and the control function is the control function of the network slices.
14. An information management function apparatus comprising the communication apparatus according to claim 13.
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| US10904947B2 (en) | 2018-05-16 | 2021-01-26 | Huawei Technologies Co., Ltd. | Message and system for application function influence on traffic routing |
| WO2021081731A1 (en) * | 2019-10-29 | 2021-05-06 | 北京小米移动软件有限公司 | Method and apparatus for connection establishment, base station, user equipment, and core network device |
| CN113127380A (en) * | 2019-12-31 | 2021-07-16 | 华为技术有限公司 | Method for deploying instances, instance management node, computing node and computing equipment |
| CN111294725A (en) * | 2020-01-16 | 2020-06-16 | 芜湖美的厨卫电器制造有限公司 | Water drinking equipment, method for monitoring water drinking equipment, server and water drinking equipment system |
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