CN108064062B - Cross-base-station information processing method and device - Google Patents
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Abstract
The embodiment of the invention provides a method and a device for processing information of a cross-base station, relates to the technical field of communication, and solves the problem of data loss in the process of switching base stations when a vehicle runs in the prior art. The scheme is as follows: the method comprises the steps that a central processing node receives first information which is sent by a service MEC node of a vehicle and used for indicating the position of the vehicle, wherein the vehicle is a vehicle which runs to the edge of the coverage range of a service base station of the vehicle; determining a candidate base station set according to the first information, wherein the candidate base station set consists of candidate base stations, and the coverage range of the candidate base stations is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station; and sending second information to candidate MEC nodes respectively corresponding to each candidate base station in the candidate base station set, wherein the second information comprises the identification of the vehicle and is used for enabling the candidate MEC nodes of the vehicle to monitor whether the vehicle indicated by the second information enters the coverage range of the candidate base station.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for processing information across base stations.
Background
Along with the development of networks, the requirement on time delay in many fields such as the internet of vehicles and the like is higher and higher, along with the advance of LTE and 5G technologies, the enhancement of the transmission capability of a wireless side provides a network basis for the rapid development of the internet of vehicles, can provide automatic driving perception capability for users, meets the requirements on vehicle-mounted information entertainment such as AR/VR, games, movies and mobile office and high precision, and can support the real-time reconstruction of a local map fused with vehicle-mounted sensor information and the modeling and analysis of dangerous situations.
The Mobile Edge Computing (MEC) technology is an important direction for 5G development, and provides services and cloud Computing functions that are not needed by telecommunication users nearby through a wireless access network to create a telecommunication-level service environment with high performance, low delay and high bandwidth, so that rapid downloading of various contents, services and applications in the network can be accelerated, and consumers can enjoy uninterrupted high-quality network experience.
Currently, after applying MEC technology to the internet of vehicles, the internet of vehicles cloud can be "sunk" to highly distributed deployed mobile communication base stations. The MEC node deployed on a base station and a small cell (small cell) side provides various vehicle networking functions by running an MEC application (e.g., APP). The MEC node also allows data and applications to be stored close to the vehicle, reducing latency and enabling a layer of abstraction from applications provided by the core network and the internet. As shown in fig. 1, which is an application scenario diagram of the MEC technology in the car networking, the MEC node directly receives data of a vehicle from the vehicle-mounted terminal, analyzes the data, and transmits a conclusion (for example, hazard alarm information) to other networked vehicles within the coverage area of the base station where the vehicle is located with extremely low delay, and the whole process can be completed within millisecond-level time, so that a driver can make a decision in time.
When a vehicle crosses a base station during driving, in the prior art, after the vehicle enters the coverage area of another base station from the coverage area of the current base station, a vehicle-mounted terminal sends a request to an MEC node deployed on the side of the another base station, and then the vehicle establishes a connection with the MEC node, so that the MEC node monitors and processes relevant information of the vehicle. However, when a vehicle is switched during traveling, after the vehicle enters the coverage area of another base station, the vehicle-mounted terminal requests the corresponding MEC node and then can establish a connection with the MEC node, which may cause a problem of data loss, and thus, seamless switching cannot be realized.
Disclosure of Invention
The embodiment of the invention provides a method and a device for processing information across base stations, which solve the problem of data loss in the process of switching base stations when a vehicle runs in the prior art.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect of the embodiments of the present invention, a method for cross-base station information processing is provided, where the method includes:
the method comprises the steps that a central processing node receives first information sent by a service MEC node of a vehicle, the vehicle is a vehicle running to the edge of the coverage range of a service base station of the vehicle, and the first information is used for indicating the position of the vehicle;
determining a candidate base station set according to the first information, wherein the candidate base station set consists of candidate base stations, and the coverage range of the candidate base stations is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station;
and sending second information to candidate MEC nodes respectively corresponding to the candidate base stations in the candidate base station set, wherein the second information comprises vehicle identifiers, and is used for enabling the candidate MEC nodes of the vehicle to monitor whether the vehicle indicated by the second information enters the coverage range of the candidate base stations.
Optionally, the first information includes an identification of a serving base station of the vehicle; the determining a set of candidate base stations according to the first information comprises:
determining each adjacent base station of the service base station of the vehicle according to the identification of the service base station of the vehicle, wherein each adjacent base station of the service base station of the vehicle forms a candidate base station set;
or, the first information includes an identification of a serving base station of a vehicle and coordinates of the vehicle; the determining a set of candidate base stations according to the first information comprises:
and determining each adjacent base station of the service base station of the vehicle according to the identifier of the service base station of the vehicle, and determining a candidate base station set from each adjacent base station of the service base station of the vehicle according to the coordinates of the vehicle.
Further optionally, the method further comprises:
receiving an authentication request message of a vehicle sent by a service MEC node of the vehicle, wherein the authentication request message comprises an identification of the vehicle;
authenticating the vehicle according to the identity of the vehicle;
and after the authentication is passed, sending a reply message of passing the authentication to the service MEC node.
In a second aspect of the embodiments of the present invention, a method for cross-base station information processing is provided, where the method includes:
the method comprises the steps that an MEC node sends first information to a central processing node under the condition that a vehicle is determined to be at the edge of the coverage range of a service base station of the vehicle, wherein the first information is used for indicating the position of the vehicle; so that the central processing node determines a candidate base station set according to the first information, wherein the candidate base station set consists of candidate base stations, and the coverage range of the candidate base stations is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station; the MEC node is a serving MEC node of the vehicle.
Optionally, the method further includes:
sending an acquired authentication request message of the vehicle to a central processing node, wherein the authentication request message comprises an identifier of the vehicle;
and receiving an authentication passing reply message returned by the central processing node, and returning the authentication passing message to the vehicle-mounted terminal of the vehicle.
Optionally, the method further includes:
acquiring the signal intensity of the position of a vehicle reported by a vehicle-mounted terminal in real time;
and when the signal intensity of the position of the vehicle is smaller than or equal to a threshold value, determining that the vehicle is at the edge of the coverage range of the service base station of the vehicle.
In a third aspect of the embodiments of the present invention, a method for cross-base-station information processing is provided, where the method includes:
the MEC node receives second information sent by the central processing node, wherein the second information comprises an identifier of a vehicle;
and under the condition that the vehicle enters the coverage range of the candidate base station within a time period, establishing connection with the vehicle according to the identification of the vehicle, wherein the MEC node is a candidate MEC node corresponding to the candidate base station.
Optionally, the method further includes:
and stopping monitoring under the condition that the vehicle is not monitored to enter the coverage range of the candidate base station within a time period.
In a fourth aspect of the embodiments of the present invention, a central processing node is provided, where the central processing node includes:
the system comprises a receiving module, a sending module and a processing module, wherein the receiving module is used for receiving first information sent by a service MEC node of a vehicle, the vehicle is a vehicle driving to the edge of the coverage area of a service base station of the vehicle, and the first information is used for indicating the position of the vehicle;
a processing module, configured to determine a candidate base station set according to the first information, where the candidate base station set is composed of candidate base stations, and a coverage area of the candidate base station is a coverage area that the vehicle may enter after moving out of a coverage area of the serving base station;
a sending module, configured to send second information to candidate MEC nodes corresponding to each candidate base station in the candidate base station set, where the second information includes an identifier of a vehicle, and is used to enable the candidate MEC node of the vehicle to monitor whether the vehicle indicated by the second information enters a coverage area of the candidate base station.
Optionally, the first information includes an identification of a serving base station of the vehicle; the processing module is specifically configured to:
determining each adjacent base station of the service base station of the vehicle according to the identification of the service base station of the vehicle, wherein each adjacent base station of the service base station of the vehicle forms a candidate base station set;
or, the first information includes an identification of a serving base station of a vehicle and coordinates of the vehicle; the processing module is specifically configured to:
and determining each adjacent base station of the service base station of the vehicle according to the identifier of the service base station of the vehicle, and determining a candidate base station set from each adjacent base station of the service base station of the vehicle according to the coordinates of the vehicle.
Further optionally, the central processing node further includes:
the receiving module is further configured to receive an authentication request message of the vehicle sent by a serving MEC node of the vehicle, where the authentication request message includes an identifier of the vehicle;
the authentication module is used for authenticating the vehicle according to the identification of the vehicle;
the sending module is further configured to send a reply message that the vehicle passes the authentication to the serving MEC node of the vehicle after the vehicle passes the authentication.
In a fifth aspect of the embodiments of the present invention, an MEC node is provided, where the MEC node includes:
a processing module to determine whether a vehicle is at an edge of a coverage area of a serving base station of the vehicle;
a sending module, configured to send first information to a central processing node, where the processing module determines that a vehicle is at an edge of a coverage area of a serving base station of the vehicle, the first information being used to indicate a location of the vehicle; so that the central processing node determines a candidate base station set according to the first information, wherein the candidate base station set is composed of candidate base stations, and the coverage range of the candidate base stations is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station.
Optionally, the MEC node further includes:
the sending module is further configured to send an acquired authentication request message of the vehicle to the central processing node, where the authentication request message includes an identifier of the vehicle;
and the receiving module is used for receiving the authentication passing reply message returned by the central processing node and returning the authentication passing message to the vehicle-mounted terminal of the vehicle.
Optionally, the MEC node further includes:
the acquisition module is used for acquiring the signal intensity of the position of the vehicle reported by the vehicle-mounted terminal in real time;
the processing module is further configured to determine that the vehicle is located at an edge of a coverage area of a serving base station of the vehicle when the signal strength of the location of the vehicle is less than or equal to a threshold.
A sixth aspect of the present invention provides an MEC node, including:
the receiving module is used for receiving second information sent by the central processing node, and the second information comprises an identifier of a vehicle;
and the connection establishing module is used for establishing connection with a vehicle-mounted terminal of the vehicle according to the identification of the vehicle under the condition that the vehicle is monitored to enter the coverage range of the candidate base station within a time period.
Optionally, the MEC node further includes:
and the stopping module is used for stopping monitoring under the condition that the vehicle is not monitored to enter the coverage range of the candidate base station within a time period.
A seventh aspect of the present invention provides a central processing node, including: a processor, a memory, and a communication interface, wherein: the memory is configured to store computer executable instructions which, when the apparatus is run, the processor executes the computer executable instructions stored by the memory to cause the apparatus to perform a method of information processing across base stations as described in the first aspect.
In an eighth aspect of the embodiments of the present invention, an MEC node is provided, including: a processor, a memory, and a communication interface, wherein:
the memory is configured to store computer executable instructions, and when the apparatus is running, the processor executes the computer executable instructions stored by the memory to cause the apparatus to perform the method of information processing across base stations as set forth in the second aspect or the third aspect.
A ninth aspect of embodiments of the present invention provides a computer storage medium including computer instructions which, when run on a computer, cause the computer to perform information processing across base stations as described in the first aspect, the second aspect, or the third aspect.
A tenth aspect of embodiments of the present invention provides a computer program product, which when run on a computer, causes the computer to perform information processing across base stations as described in the first aspect, the second aspect, or the third aspect.
Compared with the prior art, according to the method and the device for processing information across base stations, provided by the embodiment of the invention, the central processing node receives the first information which is sent by the service MEC node of the vehicle running to the edge of the coverage area of the service base station of the vehicle and is used for indicating the position of the vehicle, and can inform the central processing node of the position of the vehicle in advance when the vehicle is not switched; then, the central processing node determines a candidate base station set according to the first information, wherein the coverage range of the candidate base station is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station of the vehicle, so that the central processing node determines the coverage range of the base station which the vehicle can enter soon; and finally, the central processing node sends second information including the identification of the vehicle to the candidate MEC nodes corresponding to the candidate base stations in the candidate base station set, so that the candidate nodes monitor whether the vehicle indicated by the second information enters the coverage range of the candidate base stations, and the candidate MEC nodes are connected with the vehicle.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an application scenario diagram of an MEC technology in the prior art in an internet of vehicles according to an embodiment of the present invention;
fig. 2 is a first application scenario provided in the embodiment of the present invention;
fig. 3 is a second application scenario provided in the embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for processing information across base stations according to an embodiment of the present invention;
fig. 5 is a distribution scenario diagram of a plurality of base stations according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating another method for processing information across base stations according to fig. 4 according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a central processing node according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an MEC node according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another MEC node according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The central processing node involved in the embodiment of the present invention may be deployed between a mobile backhaul Network and a Core Network (Core Network, hereinafter referred to as CN). The mobile backhaul Network may be a Packet Transport Network (PTN) or an IP Radio Access Network (IP-RAN), and the embodiment of the present invention is described by taking IP-RAN as an example. Specifically, the central processing node is deployed between the IP-RAN and the CN and comprises the IP-RAN side and the CN side. Fig. 2 and fig. 3 are diagrams of two application scenarios provided in the embodiment of the present invention. As shown in fig. 2, the structure diagram is a schematic diagram of a central processing node deployed on the IP-RAN side, and specifically, the central processing node is located behind a aggregation node in the IP-RAN. As shown in fig. 3, the structure diagram is a schematic diagram that a central processing node is deployed at the CN side, and specifically, the central processing node is located behind a PDN GateWay (english: PDN GateWay, abbreviated as P-GW) in the CN. Based on the foregoing fig. 2 and fig. 3, in an actual existing network, if a central processing node is deployed on an IP-RAN side, the central processing node may be an independent network element, or the functions of the central processing node may be integrated in a sink node in the IP-RAN, and when the central processing node is an independent network element, the central processing node and the sink node may be devices of different manufacturers. Similarly, the central processing node may be a separate network element deployed on the CN side or the function of the central processing node may be integrated in the P-GW.
Based on the foregoing fig. 2 and fig. 3, an embodiment of the present invention provides a method for processing information across base stations, as shown in fig. 4, the method includes:
101. the MEC node sends first information to a central processing node if it is determined that the vehicle is at an edge of a coverage area of a serving base station of the vehicle, the MEC node being a serving MEC node of the vehicle.
The vehicle is a vehicle traveling to the edge of the coverage area of the service base station of the vehicle, and the first information is used to indicate the position of the vehicle, which generally refers to the position of the vehicle-mounted terminal on the vehicle.
A serving MEC node of a vehicle refers to an MEC node serving the vehicle (or in-vehicle terminal on the vehicle), and a serving base station of a vehicle refers to a base station serving the vehicle (or in-vehicle terminal on the vehicle). A base station generally serves vehicles within the coverage area of the base station, vehicles within the coverage area of the same base station can be served by the same MEC node, vehicles within different base station ranges can be served by different MEC nodes, that is, the MEC nodes serving the vehicles within the same coverage area and the base station can have a one-to-one correspondence relationship; of course, an MEC node may also serve vehicles within the coverage of multiple base stations, and in this case, an MEC node may be said to correspond to multiple base stations.
The MEC node may communicate with a corresponding base station to obtain, from the base station, data related to a vehicle within a coverage area of the base station (e.g., information including an identifier of the vehicle, a location of the vehicle, etc.), for example, an on-board terminal on a vehicle within the coverage area of the base station uploads the data related to the vehicle to a serving base station of the vehicle, and the serving MEC node of the vehicle may obtain the data related to the vehicle from the serving base station of the vehicle.
Referring to fig. 2 or fig. 3, taking an example that an MEC node corresponds to a base station, an MEC node may be a separate network element deployed behind a single base station. The architecture scheme can be applied to hot spot areas such as campuses, shopping malls and the like, and has the advantage that the serving MEC node can more conveniently acquire the wireless related information of the base station side by monitoring and analyzing the signaling of the S1 interface. Of course, the functionality of the MEC node may also be integrated in the base station. The MEC nodes, whether separate network elements or integrated in a base station, may be collectively referred to as MEC nodes deployed on the base station side. If the MEC node is an individual network element, the base station corresponding to the MEC node may be a device of a different manufacturer. In a 4G Network, if the MEC node is a platform based on Network Function Virtualization (NFV), the MEC node may share a unified hardware resource platform with a base station and a core Network, and smoothly transition to a 5G Network.
For example, when the vehicle in fig. 2 or fig. 3 travels into the coverage of eNodeB1, the serving base station of the vehicle is eNodeB1, and the serving MEC node of the vehicle is MEC node 1; when the vehicle travels within the coverage of eNodeB2 after leaving the coverage of eNodeB1, the serving base station of the vehicle is eNodeB2 and the serving MEC node of the vehicle is MEC node 2.
Illustratively, before the step 101, the method further includes:
101a1, the MEC node obtains the signal intensity of the position of the vehicle reported by the vehicle-mounted terminal in real time.
101a2, when the signal strength of the vehicle location is less than or equal to the threshold, the MEC node determines that the vehicle is at the edge of the coverage area of the vehicle's serving base station.
Illustratively, the threshold is set according to actual needs, and the threshold is different for different base stations and is adjustable.
102. And the central processing node determines a candidate base station set according to the first information.
The candidate base station set is composed of candidate base stations, and the coverage range of the candidate base stations is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station.
For example, since the identifier of the serving base station of the vehicle can reflect which base station is the serving base station of the vehicle, so that it can be known that the vehicle is within the coverage area of the base station, i.e., the location of the vehicle is reflected, the first information includes the identifier of the serving base station of the vehicle. The identity of the base station may be, for example, an eNodeB-ID, which is unique under a Public Land Mobile Network (PLMN). The step 102 specifically includes the following steps:
102a, the central processing node determines each adjacent base station of the service base station of the vehicle according to the identification of the service base station of the vehicle, and each adjacent base station of the service base station forms a candidate base station set.
For example, in order that the determined candidate base station set is more accurate, the first information includes an identifier of a serving base station of the vehicle and coordinates of the vehicle, and step 102 specifically includes the following steps:
102b, the central processing node determines each adjacent base station of the service base station according to the identification of the service base station of the vehicle, and determines a candidate base station set from each adjacent base station of the service base station of the vehicle according to the coordinates of the vehicle.
For example, the coordinates of the vehicle may be longitude and latitude coordinates of a position where the vehicle is located. Specifically, the coordinates of the vehicle may be obtained by positioning the base station, or may be obtained by performing GPS positioning by an in-vehicle terminal (the in-vehicle terminal has a GPS function) on the vehicle.
Specifically, the base station positioning is to determine the vehicle position by measuring and calculating the distance of the vehicle (in which the vehicle-mounted terminal is installed) by using the base station. The positioning of the GPS is to utilize a GPS positioning module on the vehicle-mounted terminal to send a position signal of the vehicle to a positioning background to position the position of the vehicle, and then the vehicle-mounted terminal reports the position signal to a service base station of the vehicle or a service MEC node of the vehicle.
The specific implementation process of step 2 is described based on fig. 2 or fig. 3. As shown in fig. 2 or fig. 3, if a vehicle in the coverage of the eNodeB1 moves to the edge of the coverage of the eNodeB1, the candidate base station set may be composed of neighboring base stations of the eNodeB1, or may be one or more neighboring base stations screened from all neighboring base stations of the eNodeB1 according to the coordinates of the vehicle, and the one or more neighboring base stations constitute the candidate base station set.
Based on the contents of step 102b described above, a specific example of this step is given below. Fig. 5 is a diagram illustrating a distribution scenario of a plurality of base stations according to an embodiment of the present invention. However, if the eNodeB1 in fig. 5 is a serving base station of a vehicle, it can be seen from fig. 5 that the eNodeB2, the eNodeB3, and the eNodeB4 are all adjacent base stations (may also be referred to as adjacent cells) of the eNodeB1, and based on each adjacent base station of the serving base station, since a location point (e.g., longitude and latitude coordinates) of the vehicle in fig. 5 is less than a threshold from the coverage of the eNodeB2 and the eNodeB3, the eNodeB2 and the eNodeB3 may both be candidate base stations, and a set of the eNodeB2 and the eNodeB3 is a candidate base station set. If a vehicle is outside the coverage area of a base station, the distance between the location point of the vehicle and the coverage area of the base station may be: the shortest distance from the location point of the vehicle to the coverage area of the base station is geometrically the shortest distance from the location point of the vehicle to the contour line of the coverage area of the base station. If a vehicle is within the coverage of a base station, the distance between the location point of the vehicle and the coverage of the base station may be considered to be 0.
Of course, fig. 5 is only an example for illustration, and is not limited thereto, and in an actual process, the distances between the location point where the vehicle is located and the coverage areas of the plurality of base stations may be ranked, and the top N (N is greater than or equal to 1, and usually greater than or equal to 2) base stations from small to large may be selected to form a candidate base station set, and the like.
103. And the central processing node sends second information to candidate MEC nodes respectively corresponding to each candidate base station in the candidate base station set.
The second information includes an identifier of the vehicle, and is used for enabling the candidate MEC node of the vehicle to monitor whether the vehicle indicated by the second information enters the coverage range of the candidate base station.
The candidate base station corresponds to the candidate MEC node, and specific reference may be made to the content of the service base station of the vehicle and the corresponding part of the service MEC node of the vehicle, which is not described herein again.
For example, the second information further includes historical data of the vehicle, which is vehicle data that the vehicle is in the coverage of other base stations before entering the coverage of the candidate base station of the vehicle. The vehicle data includes position information, a traveling direction, a traveling time, a traveling speed, and the like of the vehicle.
For example, the vehicle identifier is used to distinguish different vehicles, specifically: the vehicle identification may be an ID of a vehicle-mounted terminal installed in the vehicle, or a license plate number of the vehicle.
104. And the MEC node establishes connection with the vehicle according to the identification of the vehicle under the condition that the MEC node monitors that the vehicle enters the coverage range of the candidate base station within a time period, wherein the MEC node is a candidate MEC node of the vehicle.
For example, the connection with the vehicle is established according to the identifier of the vehicle, that is, the connection with the vehicle-mounted terminal is established.
Optionally, the method further includes:
104a, stopping monitoring when the vehicle is not monitored to enter the coverage range of the candidate base station in a time period.
Compared with the prior art, according to the method and the device for processing information across base stations, provided by the embodiment of the invention, the central processing node receives the first information which is sent by the service MEC node of the vehicle running to the edge of the coverage area of the service base station of the vehicle and is used for indicating the position of the vehicle, and can inform the central processing node of the position of the vehicle in advance when the vehicle is not switched; then, the central processing node determines a candidate base station set according to the first information, wherein the coverage range of the candidate base station is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station of the vehicle, so that the central processing node determines the coverage range of the base station which the vehicle can enter soon; and finally, the central processing node sends second information including the identification of the vehicle to the candidate MEC nodes corresponding to the candidate base stations in the candidate base station set, so that the candidate nodes monitor whether the vehicle indicated by the second information enters the coverage range of the candidate base stations, and the candidate MEC nodes are connected with the vehicle.
Based on the above, the embodiment of the present invention further provides the steps of the vehicle authentication process, as shown in fig. 6, before the implementation of the above steps 101-104, the method further includes the following steps:
101b1, the MEC node obtains the authentication request message of the vehicle, and the MEC node serves the MEC node for the vehicle.
Wherein, the authentication request message includes the identification of the vehicle.
Illustratively, the step 101b1 is specifically as follows: the service MEC node of the vehicle receives an authentication request message of the vehicle transmitted from a vehicle-mounted terminal installed in the vehicle.
101b2, the MEC node sends the vehicle authentication request message to the central processing node.
101b3, the central processing node authenticates the vehicle according to the identification of the vehicle;
101b4, after passing the authentication, sends a reply message that the authentication is passed to the vehicle's serving MEC node.
Illustratively, the specific implementation process of step 101b3 is as follows: and after receiving the identification of the vehicle, the central processing node searches the database of the central processing node, matches the database with the data stored in the database, and passes the authentication when the identification of the vehicle can be found in the database. In addition, the central processing node can acquire relevant data from the vehicle network data center in real time so as to update the database of the central processing node.
Based on the above steps 101b1-b4, after the vehicle establishes a connection with the serving MEC node, the vehicle performs message interaction with the MEC node. Specifically, a vehicle-mounted terminal installed on a vehicle reports a message such as a vehicle position or sends an information acquisition request, and a service MEC node of the vehicle processes the message by itself. If the request of cross-base station or non-real-time data occurs, the service MEC node of the vehicle reports to the central processing node, the central processing node judges whether the request can be processed, and if the request can be processed, a reply message is sent to the service MEC node of the vehicle; if not, reporting to the vehicle network cloud, processing the vehicle network cloud, sending a reply message to the central processing node, sending the reply message to the service MEC node of the vehicle by the central processing node, and finally reaching the vehicle-mounted terminal.
A central processing node provided in the embodiment of the present invention will be described below based on the related description in the embodiment of the method for processing information across base stations corresponding to fig. 4. Technical terms, concepts and the like related to the above embodiments in the following embodiments may refer to the above embodiments, and are not described in detail herein.
An embodiment of the present invention provides a central processing node, as shown in fig. 7, where the central processing node 7 includes: a receiving module 71, a processing module 72 and a transmitting module 73, wherein:
the receiving module 71 is configured to receive first information sent by a serving MEC node of a vehicle.
The vehicle is a vehicle traveling to the edge of the coverage area of the service base station of the vehicle, and the first information is used to indicate the position of the vehicle, which generally refers to the position of the vehicle-mounted terminal on the vehicle.
A serving MEC node of a vehicle refers to an MEC node serving the vehicle (or in-vehicle terminal on the vehicle), and a serving base station of a vehicle refers to a base station serving the vehicle (or in-vehicle terminal on the vehicle). A base station generally serves vehicles within the coverage area of the base station, vehicles within the coverage area of the same base station can be served by the same MEC node, vehicles within different base station ranges can be served by different MEC nodes, that is, the MEC nodes serving the vehicles within the same coverage area and the base station can have a one-to-one correspondence relationship; of course, an MEC node may also serve vehicles within the coverage of multiple base stations, and in this case, an MEC node may be said to correspond to multiple base stations.
A processing module 72, configured to determine a candidate base station set according to the first information.
The candidate base station set consists of candidate base stations, and the coverage range of the candidate base stations is the coverage range which can be entered after the vehicle moves out of the coverage range of the service base station.
Optionally, the identifier of the service base station of the vehicle may reflect which base station is used as the service base station of the vehicle, so that it can be known that the vehicle is located within the coverage of the base station, and the location of the vehicle is also reflected, and therefore the first information includes the identifier of the service base station of the vehicle. The identity of the base station may be, for example, an eNodeB-ID, which is unique under a Public Land Mobile Network (PLMN). The first information includes an identification of a serving base station of the vehicle; the processing module 72 is specifically configured to:
and determining each adjacent base station of the service base station of the vehicle according to the identification of the service base station of the vehicle, wherein each adjacent base station of the service base station of the vehicle forms a candidate base station set.
Or, in order to determine that the set of candidate base stations is accurate, the first information includes an identifier of a serving base station of the vehicle and coordinates of the vehicle; the processing module 72 is specifically configured to:
and determining each adjacent base station of the service base station of the vehicle according to the identifier of the service base station of the vehicle, and determining a candidate base station set from each adjacent base station of the service base station of the vehicle according to the coordinates of the vehicle.
For example, the coordinates of the vehicle may be longitude and latitude coordinates of a position where the vehicle is located. Specifically, the coordinates of the vehicle may be obtained by positioning the base station, or may be obtained by performing GPS positioning by an in-vehicle terminal (the in-vehicle terminal has a GPS function) on the vehicle.
The specific implementation process of step 2 is described based on fig. 2 or fig. 3. As shown in fig. 2 or fig. 3, if a vehicle in the coverage of the eNodeB1 moves to the edge of the coverage of the eNodeB1, the candidate base station set may be composed of neighboring base stations of the eNodeB1, or may be one or more neighboring base stations screened from all neighboring base stations of the eNodeB1 according to the coordinates of the vehicle, and the one or more neighboring base stations constitute the candidate base station set.
A sending module 73, configured to send the second information to candidate MEC nodes corresponding to each candidate base station in the candidate base station set.
The second information includes an identifier of the vehicle, and is used for enabling the candidate MEC node of the vehicle to monitor whether the vehicle indicated by the second information enters the coverage range of the candidate base station.
The candidate base station corresponds to the candidate MEC node, and specific reference may be made to the content of the service base station of the vehicle and the corresponding part of the service MEC node of the vehicle, which is not described herein again.
For example, the second information further includes historical data of the vehicle, which is vehicle data that the vehicle is in the coverage of other base stations before entering the coverage of the candidate base station of the vehicle. The vehicle data includes position information, a traveling direction, a traveling time, a traveling speed, and the like of the vehicle.
For example, the vehicle identifier is used to distinguish different vehicles, specifically: the vehicle identification may be an ID of a vehicle-mounted terminal installed in the vehicle, or a license plate number of the vehicle.
Further optionally, the central processing node 7 further includes: an authentication module 74, wherein:
the receiving module 71 is further configured to receive an authentication request message of the vehicle sent by a serving MEC node of the vehicle, where the authentication request message includes an identifier of the vehicle.
An authentication module 74 for authenticating the vehicle based on the identity of the vehicle.
And the sending module 73 is further configured to send a reply message that the vehicle passes the authentication to the serving MEC node of the vehicle after the authentication passes.
Illustratively, the specific authentication process of the authentication module is as follows: and after receiving the identification of the vehicle, the central processing node searches the database of the central processing node, matches the database with the data stored in the database, and passes the authentication when the identification of the vehicle can be found in the database. In addition, the central processing node can acquire relevant data from the vehicle network data center in real time so as to update the database of the central processing node.
Based on the above, an entity corresponding to each module in the central processing node is provided, where the central processing node includes: a receiver, a processor, and a transmitter, wherein:
the receiver is used for receiving first information sent by a service MEC node of the vehicle.
The vehicle is a vehicle traveling to the edge of the coverage area of the service base station of the vehicle, and the first information is used to indicate the position of the vehicle, which generally refers to the position of the vehicle-mounted terminal on the vehicle.
A processor configured to determine a set of candidate base stations according to the first information.
The candidate base station set consists of candidate base stations, and the coverage range of the candidate base stations is the coverage range which can be entered after the vehicle moves out of the coverage range of the service base station.
And the transmitter is used for transmitting the second information to candidate MEC nodes respectively corresponding to each candidate base station in the candidate base station set.
The second information includes an identifier of the vehicle, and is used for enabling the candidate MEC node of the vehicle to monitor whether the vehicle indicated by the second information enters the coverage range of the candidate base station.
It should be noted that other corresponding descriptions corresponding to each device in the central processing node provided in the embodiment of the present invention may refer to corresponding descriptions of each module in fig. 7, and are not described herein again.
Compared with the prior art, the central processing node provided by the embodiment of the invention receives the first information which is sent by the service MEC node of the vehicle running to the edge of the coverage area of the service base station of the vehicle and used for indicating the position of the vehicle, and can inform the central processing node of the position of the vehicle in advance when the vehicle is not switched; then, the central processing node determines a candidate base station set according to the first information, wherein the coverage range of the candidate base station is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station of the vehicle, so that the central processing node determines the coverage range of the base station which the vehicle can enter soon; and finally, the central processing node sends second information including the identification of the vehicle to the candidate MEC nodes corresponding to the candidate base stations in the candidate base station set, so that the candidate nodes monitor whether the vehicle indicated by the second information enters the coverage range of the candidate base stations, and the candidate MEC nodes are connected with the vehicle.
An MEC node provided in an embodiment of the present invention will be described below based on a related description in an embodiment of a method for processing information across base stations corresponding to fig. 4. Technical terms, concepts and the like related to the above embodiments in the following embodiments may refer to the above embodiments, and are not described in detail herein.
An embodiment of the present invention provides an MEC node, as shown in fig. 8, where the MEC node 8 includes: a processing module 81 and a sending module 82, wherein:
the processing module 81 is configured to determine whether the vehicle is at an edge of a coverage area of a serving base station of the vehicle.
A sending module 82, configured to send, to the central processing node, first information indicating a location of the vehicle if the processing module 81 determines that the vehicle is at an edge of a coverage area of a serving base station of the vehicle; and the central processing node determines a candidate base station set according to the first information, wherein the candidate base station set consists of candidate base stations, and the coverage range of the candidate base stations is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station.
Optionally, as shown in fig. 8, the MEC node further includes: a receiving module 83, wherein:
the sending module 82 is further configured to send the acquired authentication request message of the vehicle to the central processing node, where the authentication request message includes an identifier of the vehicle.
And the receiving module 83 is configured to receive the authentication passing reply message returned by the central processing node, and return the authentication passing message to the vehicle-mounted terminal of the vehicle.
Optionally, the MEC node 8 further includes: an acquisition module 84, wherein:
and an obtaining module 84, configured to obtain the signal strength of the position where the vehicle is located, where the vehicle is reported by the vehicle-mounted terminal in real time.
The processing module 81 is further configured to determine that the vehicle is located at an edge of a coverage area of a serving base station of the vehicle when the signal strength of the location of the vehicle is less than or equal to a threshold.
Illustratively, the threshold is set according to actual needs, and the threshold is different for different base stations and is adjustable.
Based on the above, an entity corresponding to each module in the MEC node is provided, where the MEC node includes: a processor and a transmitter, wherein:
a processor to determine whether the vehicle is at an edge of a coverage area of a serving base station of the vehicle.
A transmitter for transmitting first information to the central processing node, the first information indicating a location of the vehicle, if the processor determines that the vehicle is at an edge of a coverage area of a serving base station of the vehicle; and the central processing node determines a candidate base station set according to the first information, wherein the candidate base station set consists of candidate base stations, and the coverage range of the candidate base stations is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station.
An MEC node provided in an embodiment of the present invention will be described below based on a related description in an embodiment of a method for processing information across base stations corresponding to fig. 4. Technical terms, concepts and the like related to the above embodiments in the following embodiments may refer to the above embodiments, and are not described in detail herein.
An embodiment of the present invention provides an MEC node, as shown in fig. 9, where the MEC node includes: a receiving module 91 and a connection establishing module 92, wherein:
and the receiving module 91 is configured to receive second information sent by the central processing node, where the second information includes an identifier of the vehicle.
And the connection establishing module 92 is used for establishing connection with the vehicle-mounted terminal of the vehicle according to the identification of the vehicle under the condition that the vehicle is monitored to enter the coverage range of the candidate base station within a time period.
Optionally, the MEC node 9 further includes: a stop module 93, wherein:
and a stopping module 93, configured to stop the monitoring if it is not monitored that the vehicle enters the coverage area of the candidate base station within a time period.
Based on the above, an entity corresponding to each module in the MEC node is provided, where the MEC node includes: a receiver and a processor, wherein:
and the receiver is used for receiving second information sent by the central processing node, and the second information comprises the identification of the vehicle.
And the processor is used for establishing connection with the vehicle-mounted terminal of the vehicle according to the identification of the vehicle under the condition that the vehicle is monitored to enter the coverage range of the candidate base station within a time period.
An embodiment of the present invention provides a central processing node, including: a processor, a memory, and a communication interface, wherein: the memory is for storing computer executable instructions which, when the central processing node is run, the processor executes the computer executable instructions stored by the memory to cause the central processing node to perform the method of cross base station information processing as described above.
Illustratively, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a magnetic disk storage device, a flash memory device, or other volatile solid-state storage device.
Illustratively, the communication interface is used for receiving a request sent by the MEC node, and the communication interface may be an interface circuit.
For example, the Processor may be a Central Processing Unit (CPU), a general purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.
For example, the receiving module may be an interface circuit with a receiving function on the central processing node, such as a receiver or an information receiving interface; the sending module may be an interface circuit with a sending function on the central processing node, such as a transmitter or an information sending interface. The receiving module and the transmitting module can be integrated into a communication interface circuit such as a transceiver. The processing module may be implemented in one or more processors of the central processing node, or may be stored in the memory of the central processing node in the form of program code, which may be invoked by one or more processors of the central processing node to perform the functions of the processing module.
An embodiment of the present invention provides an MEC node, including: a processor, a memory, and a communication interface, wherein: the memory is for storing computer executable instructions which, when executed by the MEC node, the processor executes to cause the MEC node to perform the method of information processing across base stations as described above.
Illustratively, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a magnetic disk storage device, a flash memory device, or other volatile solid-state storage device.
Illustratively, the communication interface is used for receiving a request sent by the MEC node, and the communication interface may be an interface circuit.
For example, the receiving module may be an interface circuit with a receiving function on the MEC node, such as a receiver or an information receiving interface; the sending module may be an interface circuit, such as a transmitter or an information sending interface, with a sending function on the MEC node. The receiving module and the transmitting module can be integrated into a communication interface circuit such as a transceiver. The processing module may be implemented in one or more processors of the MEC node, or may be stored in the memory of the MEC node in the form of program code, and the one or more processors of the MEC node may call and execute the functions of the processing module. The connection establishing module may be implemented in one or more processors of the MEC node, or may be stored in a memory of the MEC node in the form of program codes, and the one or more processors of the MEC node may call and execute the above-mentioned function of establishing the connection module. The processor may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present invention.
An embodiment of the present invention provides a computer storage medium, including computer instructions, which, when run on a computer, cause the computer to perform information processing across base stations as described in the first aspect, the second aspect, or the third aspect.
By way of example, computer-readable storage media can be any available media that can be accessed by a computer or a data storage device, such as a server, data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
An embodiment of the present invention provides a computer program product, which when run on a computer, causes the computer to perform information processing across base stations as described in the first aspect, the second aspect or the third aspect.
Illustratively, the computer program product described above comprises one or more computer instructions.
Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, only the division of the functional modules is illustrated, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be 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.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. A method of information processing across base stations, the method comprising:
the method comprises the steps that a central processing node receives first information sent by a service MEC node of a vehicle, the vehicle is a vehicle running to the edge of the coverage range of a service base station of the vehicle, and the first information is used for indicating the position of the vehicle;
determining a candidate base station set according to the first information, wherein the candidate base station set consists of candidate base stations, and the coverage range of the candidate base stations is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station;
sending second information to candidate MEC nodes respectively corresponding to the candidate base stations in the candidate base station set, wherein the second information comprises vehicle identifiers, and is used for enabling the candidate MEC nodes of the vehicle to monitor whether the vehicle indicated by the second information enters the coverage range of the candidate base stations;
the first information includes an identification of a serving base station of the vehicle; the determining a set of candidate base stations according to the first information comprises:
determining each adjacent base station of the service base station of the vehicle according to the identification of the service base station of the vehicle, wherein each adjacent base station of the service base station of the vehicle forms a candidate base station set;
or, the first information includes an identification of a serving base station of a vehicle and coordinates of the vehicle; the determining a set of candidate base stations according to the first information comprises:
and determining each adjacent base station of the service base station of the vehicle according to the identifier of the service base station of the vehicle, and determining a candidate base station set from each adjacent base station of the service base station of the vehicle according to the coordinates of the vehicle.
2. The method of claim 1, further comprising:
receiving an authentication request message of a vehicle sent by a service MEC node of the vehicle, wherein the authentication request message comprises an identification of the vehicle;
authenticating the vehicle according to the identity of the vehicle;
and after the vehicle passes the authentication, sending a reply message that the vehicle passes the authentication to a service MEC node of the vehicle.
3. A method of information processing across base stations, the method comprising:
the method comprises the steps that an MEC node sends first information to a central processing node under the condition that a vehicle is determined to be at the edge of the coverage range of a service base station of the vehicle, wherein the first information is used for indicating the position of the vehicle; so that the central processing node determines a candidate base station set according to the first information, wherein the candidate base station set consists of candidate base stations, and the coverage range of the candidate base stations is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station; the MEC node is a serving MEC node of the vehicle;
the first information includes an identification of a serving base station of the vehicle; the determining a set of candidate base stations according to the first information comprises:
determining each adjacent base station of the service base station of the vehicle according to the identification of the service base station of the vehicle, wherein each adjacent base station of the service base station of the vehicle forms a candidate base station set;
or, the first information includes an identification of a serving base station of a vehicle and coordinates of the vehicle; the determining a set of candidate base stations according to the first information comprises:
and determining each adjacent base station of the service base station of the vehicle according to the identifier of the service base station of the vehicle, and determining a candidate base station set from each adjacent base station of the service base station of the vehicle according to the coordinates of the vehicle.
4. The method of claim 3, further comprising:
sending an acquired authentication request message of the vehicle to a central processing node, wherein the authentication request message comprises an identifier of the vehicle;
and receiving an authentication passing reply message returned by the central processing node, and returning the authentication passing message to the vehicle-mounted terminal of the vehicle.
5. The method of claim 3, further comprising:
acquiring the signal intensity of the position of a vehicle reported by a vehicle-mounted terminal in real time;
and when the signal intensity of the position of the vehicle is smaller than or equal to a threshold value, determining that the vehicle is at the edge of the coverage range of the service base station of the vehicle.
6. The method of claim 3, further comprising:
the MEC node receives second information sent by the central processing node, wherein the second information comprises an identifier of a vehicle;
and under the condition that the vehicle enters the coverage range of the candidate base station within a time period, establishing connection with the vehicle according to the identification of the vehicle, wherein the MEC node is a candidate MEC node corresponding to the candidate base station.
7. The method of claim 6, further comprising:
and stopping monitoring under the condition that the vehicle is not monitored to enter the coverage range of the candidate base station within a time period.
8. A central processing node, comprising:
the system comprises a receiving module, a sending module and a processing module, wherein the receiving module is used for receiving first information sent by a service MEC node of a vehicle, the vehicle is a vehicle driving to the edge of the coverage area of a service base station of the vehicle, and the first information is used for indicating the position of the vehicle;
a processing module, configured to determine a candidate base station set according to the first information, where the candidate base station set is composed of candidate base stations, and a coverage area of the candidate base station is a coverage area that the vehicle may enter after moving out of a coverage area of the serving base station;
a sending module, configured to send second information to candidate MEC nodes respectively corresponding to each candidate base station in the candidate base station set, where the second information includes an identifier of a vehicle, and is used to enable the candidate MEC node of the vehicle to monitor whether the vehicle indicated by the second information enters a coverage area of the candidate base station;
the first information includes an identification of a serving base station of the vehicle; the processing module is specifically configured to:
determining each adjacent base station of the service base station of the vehicle according to the identification of the service base station of the vehicle, wherein each adjacent base station of the service base station forms a candidate base station set;
or, the first information includes an identification of a serving base station of a vehicle and coordinates of the vehicle; the determining module is specifically configured to:
and determining each adjacent base station of the service base station of the vehicle according to the identifier of the service base station of the vehicle, and determining a candidate base station set from each adjacent base station of the service base station of the vehicle according to the coordinates of the vehicle.
9. An MEC node, wherein the MEC node comprises:
a processing module to determine whether a vehicle is at an edge of a coverage area of a serving base station of the vehicle;
a sending module, configured to send first information to a central processing node, where the processing module determines that a vehicle is at an edge of a coverage area of a serving base station of the vehicle, the first information being used to indicate a location of the vehicle; so that the central processing node determines a candidate base station set according to the first information, wherein the candidate base station set consists of candidate base stations, and the coverage range of the candidate base stations is the coverage range which the vehicle can enter after moving out of the coverage range of the service base station;
the first information includes an identification of a serving base station of the vehicle; the processing module is specifically configured to:
determining each adjacent base station of the service base station of the vehicle according to the identification of the service base station of the vehicle, wherein each adjacent base station of the service base station forms a candidate base station set;
or, the first information includes an identification of a serving base station of a vehicle and coordinates of the vehicle; the determining module is specifically configured to:
and determining each adjacent base station of the service base station of the vehicle according to the identifier of the service base station of the vehicle, and determining a candidate base station set from each adjacent base station of the service base station of the vehicle according to the coordinates of the vehicle.
10. The MEC node of claim 9, wherein the MEC node further comprises:
the receiving module is used for receiving second information sent by the central processing node, and the second information comprises an identifier of a vehicle;
and the connection establishing module is used for establishing connection with a vehicle-mounted terminal of the vehicle according to the identification of the vehicle under the condition that the vehicle is monitored to enter the coverage range of the candidate base station within a time period.
11. A computer storage medium comprising computer instructions which, when run on a computer, cause the computer to perform a method of information processing across base stations as claimed in any one of claims 1-2 or 3-7.
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