CN112243223A - Method and equipment for distributing D2D communication by central network node - Google Patents
Method and equipment for distributing D2D communication by central network node Download PDFInfo
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- H04W8/005—Discovery of network devices, e.g. terminals
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Abstract
The invention provides a method and equipment for distributing D2D communication by a central network node, wherein the method comprises the following steps: the method comprises the steps that a central network node receives a monitoring report of discovery D2D equipment reported by each terminal, wherein each terminal at least comprises a requester and a target; acquiring a service intention of a requester; the central network node judges whether a target party capable of establishing D2D direct communication with the requester exists according to the service intention of the requester and the monitoring report of the D2D discovery device; and if so, allocating corresponding channel resources to the requester and the target, and assigning the requester and the target to establish direct communication. The method accurately matches the target terminal related to the service intention with the available channel resources for the requesting terminal, further unloads the node flow of the central network, shares the service pressure of the central network flow, improves the whole network efficiency and improves the user experience.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a method and equipment for distributing D2D communication by a central network node.
Background
5G D2D (Device-to-Device) terminal direct technology means that a nearby terminal can perform data transmission by direct communication in a short distance without forwarding through a base station. Due to the advantages of short distance and direct connection, the D2D technology can improve the use efficiency of wireless resources and expand the network coverage, so that a great deal of research is carried out in the 5G construction, and the D2D technology can be applied to more scenes in the future to improve the user experience.
The D2D terminal needs the central network to reserve a part of resources for D2D discovery in the discovery process, and is dedicated to the transmission and detection of D2D discovery signals, and needs to perform common configuration on D2D discovery through the base station, and inform all other terminals supporting D2D discovery function in the central network of relevant configuration information through a system broadcast message. The discovered D2D terminal randomly or purposefully selects time-frequency resources according to the public configuration information of the central network to transmit discovery signals; the discovery end device performs blind detection in the D2D discovery signal resource pool according to the central network configuration information, and completes the discovery process of D2D in this process. In addition, in the conventional D2D scheme, when a terminal wants to perform D2D communication with a target terminal, a user needs to select a specific target terminal to complete service communication, and this way cannot dynamically adjust in real time according to the load pressure of a central network, thereby achieving the purpose of traffic offloading.
The invention provides a method and equipment for distributing D2D communication by a central network node in the background.
Disclosure of Invention
In view of the foregoing disadvantages of the prior art, an object of the present invention is to provide a method and an apparatus for allocating D2D communication by a central network node, which aims to solve the problem of how to provide a target terminal matching with a service intention of a requester terminal for direct communication and offload central network traffic by the central network node.
In order to achieve the purpose, the invention adopts the following technical scheme:
a first aspect of the present invention provides a method for a central network node to distribute D2D communications, the method comprising:
the method comprises the steps that a central network node receives a monitoring report of discovery D2D equipment reported by each terminal, wherein each terminal at least comprises an ID-1 of a requester and an ID-2 of a target;
obtaining a service intention of a requester, wherein the service intention comprises a destination address of a service requester;
the central network node judges whether a target party capable of establishing D2D direct communication with the requester exists according to the service intention of the requester and the monitoring report of the D2D discovery device;
and if so, allocating corresponding channel resources to the requester and the target, and assigning the requester and the target to establish direct communication.
In a preferred embodiment of the first aspect, the central network node is a 5G base station
In a preferred embodiment of the first aspect, the central network node is a WiFi hotspot
In a preferred embodiment provided by the first aspect, the central network node is a 5 GCPE.
A second aspect of the present invention provides a method for a central network node to distribute D2D communications, the method comprising:
requesting a central network node to report a monitoring report of discovering D2D equipment, wherein the monitoring report at least comprises an ID-2 of a target party;
generating and sending a service request so that the central network node receives and requests to distribute the service;
and if the central network node allocates the channel resources, establishing direct connection communication with a target party in the channel resources.
A third aspect of the present invention provides a method for a central network node to distribute D2D communications, the method comprising:
a target direction central network node reports a monitoring report of discovering D2D equipment, wherein the monitoring report at least comprises ID-1 of a requester;
and receiving channel resources distributed by the central network node, and establishing direct connection communication with a requester in the channel resources.
A fourth aspect of the present invention provides a central network node, comprising:
the receiving module is used for receiving monitoring reports of discovering D2D devices reported by all terminals in real time;
the acquisition module is used for acquiring the service request of each terminal;
the detection module is used for detecting whether a terminal with the service exists in the terminals in the central network node;
and the allocation module is used for allocating channel resources to the requester sending the service request and the target storing the service, and prompting the requester sending the service request and the target storing the service to establish direct communication.
In a preferred embodiment of the fourth aspect, the central network node is one of a 5G base station, a WiFi hotspot, and a 5 GCPE.
A fifth aspect of the present invention provides a requester terminal, including:
the reporting module is used for reporting a monitoring report of the D2D device;
the message generating module is used for generating a service request message and sending the service request message to the central network node so that the central network node receives the service request message;
the receiving module is used for receiving the channel resources distributed by the central network node;
and the connection module is used for establishing direct connection communication with the target party according to the channel resources distributed by the central network node.
A sixth aspect of the present invention provides a destination terminal, including:
the reporting module is used for reporting a monitoring report of the D2D device;
the receiving module is used for receiving channel resources distributed by the central network node and a direct connection communication establishment request sent by a requesting party;
and the connection module is used for receiving the direct connection communication request sent by the requester according to the channel resources distributed by the central network node and establishing direct connection communication connection with the requester.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a method and equipment for distributing D2D communication by a central network node, wherein the method comprises the following steps: the method comprises the steps that a central network node receives a monitoring report of discovery D2D equipment reported by each terminal, wherein each terminal at least comprises an ID-1 of a requester and an ID-2 of a target; obtaining a service intention of a requester, wherein the service intention comprises a destination address of a service requester; the central network node judges whether a target party capable of establishing D2D direct communication with the requester exists according to the service intention of the requester and the monitoring report of the D2D discovery device; and if so, allocating corresponding channel resources to the requester and the target, and assigning the requester and the target to establish direct communication. The method accurately matches the target terminal related to the service intention with the available channel resources for the requester terminal, and prompts the requester and the target terminal D2D to communicate directly, thereby unloading the node traffic of the central network, sharing the traffic pressure of the central network, improving the whole network efficiency and improving the user experience.
Drawings
FIG. 1 is a schematic block diagram of the flow of a first method of the present invention.
FIG. 2 is a schematic block diagram of a second process of the present invention.
FIG. 3 is a schematic flow chart of a third method of the present invention.
Fig. 4 is a schematic block diagram of a central network node structure in the present invention.
Fig. 5 is a block diagram schematically illustrating a structure of a requester terminal in the present invention.
Fig. 6 is a block diagram schematically illustrating a structure of a target terminal in the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a first aspect of the present invention provides a method for a central network node to distribute D2D communications, the method comprising the steps of:
s11, the central network node receives a monitoring report of discovering D2D equipment reported by each terminal, wherein each terminal at least comprises ID-1 of a requester and ID-2 of a target;
s12, acquiring the service intention of the requester, wherein the service intention comprises the destination address of the service requester;
s13, the central network node judges whether a target party capable of establishing D2D direct communication with the requester exists according to the service intention of the requester and the monitoring report of the discovered D2D equipment;
and S14, if yes, allocating corresponding channel resources to the requester and the target, and assigning the requester and the target to establish direct communication.
Generally, when the monitoring report of the discovery D2D device of the requesting terminal includes information such as the ID-2 of the target terminal, the monitoring report of the discovery D2D device of the target terminal also includes information such as the ID-1 of the requesting terminal.
It should be noted that the central network node is one of a 5G base station, a WiFi hotspot, and a 5 GCPE; the central network node is a 5G base station (5GgNB), and the corresponding central network is a 5G cellular network; the central network node is a WiFi hotspot; the corresponding central network is a WiFi network, the central network node is 5GCPE, and the corresponding network is 5 GCPE.
It should be noted that there may be many D2D terminals in the coverage area of the central network node, first, the central network node receives the monitoring reports of discovering D2D devices reported by these terminals in real time, wherein, the request terminal sends service intention to the central network node, after the central network node receives the service intention, judging whether a target terminal meeting the service intention of the requesting terminal exists in the network coverage range, if so, checking whether the ID-2 of the target terminal exists in the monitoring report of the discovery D2D device sent by the requesting terminal, if so, checking whether the ID-1 of the requesting terminal exists in the monitoring report of the discovery D2D device sent by the target terminal, if so, the central network node assigns the corresponding target terminal and the corresponding channel resource to the requester terminal, and facilitates the requester terminal and the target terminal to establish D2D direct communication.
The corresponding channel resources include the ID-2 of the target terminal, the channel, the frequency band, and other information resources required for establishing the D2D direct communication.
The invention gives the task of selecting the target terminal by the requester terminal and the task of using which frequency band to the central network node, because the central network node can clearly know how the current network load is and which terminals can become the target terminals of the requester terminal; an adaptive selection can be made automatically, if at this time it finds that its network load is relatively high, and for the case that its load is relatively high, traffic offloading is made.
In summary, the method for allocating D2D communication by a central network node in the present invention accurately matches a target terminal related to a service intention with available channel resources for a requester terminal, and prompts the requester and the target terminal D2D to communicate directly, thereby offloading the central network node traffic, sharing the traffic pressure of the central network traffic, improving the efficiency of the whole network, and improving the user experience.
Referring to fig. 2, a second aspect of the present invention provides a method for a central network node to distribute D2D communications, the method comprising the steps of:
s21, requesting a central network node to report a monitoring report for discovering D2D equipment, wherein the monitoring report at least comprises ID-2 of a target party;
s22, generating and sending a service request so that the central network node receives and requests to distribute the service;
and S23, if the central network node allocates the channel resources, establishing direct connection communication with a target party in the channel resources.
The method comprises the steps that a requester terminal reports a monitoring report for finding D2D equipment to a central network node, wherein the monitoring report comprises all D2D terminals in a searching range of the requester terminal, wherein the monitoring report at least comprises ID-2 of a target party, and the requester terminal generates and sends a service request so that the central network node receives and requests to distribute the service; the central network node allocates channel resources for the D2D direct connection communication to the requester terminal, and the requester terminal establishes the D2D direct connection communication with a target terminal in the channel resources by using information in the channel resources, so that a service purpose is achieved through the target terminal.
It should be noted that there may be many D2D terminals in the coverage area of the central network node, first, the central network node receives the monitoring reports of discovering D2D devices reported by these terminals in real time, wherein, the request terminal sends service intention to the central network node, after the central network node receives the service intention, judging whether a target terminal meeting the service intention of the requesting terminal exists in the network coverage range, if so, checking whether the ID-2 of the target terminal exists in the monitoring report of the discovery D2D device sent by the requesting terminal, if so, checking whether the ID-1 of the requesting terminal exists in the monitoring report of the discovery D2D device sent by the target terminal, if so, the central network node assigns the corresponding target terminal and the corresponding channel resource to the requester terminal, and facilitates the requester terminal and the target terminal to establish D2D direct communication.
The corresponding channel resources include the ID-2 of the target terminal, the channel, the frequency band, and other information resources required for establishing the D2D direct communication.
The invention gives the task of selecting the target terminal by the requester terminal and the task of using which frequency band to the central network node, because for the central network node, it can be clear how the current network load is, that is, it can be clear which frequency bands are overloaded, which frequency bands are idle, and which terminals can become the target terminal of the requester terminal; an adaptive selection can be made automatically, if at this time it finds that its network load is relatively high, and for the case that its load is relatively high, traffic offloading is made.
In summary, the method for allocating D2D communication by a central network node in the present invention accurately matches a target terminal related to a service intention with available channel resources for a requester terminal, and prompts the requester and the target terminal D2D to communicate directly, thereby offloading the central network node traffic, sharing the traffic pressure of the central network traffic, improving the efficiency of the whole network, and improving the user experience.
Referring to fig. 3, a third aspect of the present invention provides a method for a central network node to distribute D2D communications, the method comprising the steps of:
s31, the target direction center network node reports a monitoring report for discovering the D2D equipment, wherein the monitoring report at least comprises ID-1 of a requesting party;
and S32, receiving the channel resources distributed by the central network node, and establishing direct connection communication with the requesting party in the channel resources.
The target side terminal is also a terminal within the coverage range of the central network node, and similarly, the target side terminal reports a monitoring report for finding the D2D equipment to the central network node in real time, wherein the monitoring report at least comprises the ID-1 of the requesting side; and when the target terminal receives the channel resources distributed by the central network node and receives a request for establishing D2D direct connection communication initiated by the requester terminal contained in the channel resources, establishing direct connection communication with the requester terminal.
The channel resources comprise ID-1 of the requesting terminal, channels, frequency bands and other information resources required for establishing D2D direct communication.
The invention gives the task of selecting the target terminal by the requester terminal and the task of using which frequency band to the central network node, because for the central network node, it can be clear how the current network load is, that is, it can be clear which frequency bands are overloaded, which frequency bands are idle, and which terminals can become the target terminal of the requester terminal; an adaptive selection can be made automatically, if at this time it finds that its network load is relatively high, and for the case that its load is relatively high, traffic offloading is made.
In summary, the method for allocating D2D communication by a central network node in the present invention accurately matches a target terminal related to a service intention with available channel resources for a requester terminal, and prompts the requester and the target terminal D2D to communicate directly, thereby offloading the central network node traffic, sharing the traffic pressure of the central network traffic, improving the efficiency of the whole network, and improving the user experience.
Referring to fig. 4, a fourth aspect of the present invention provides a central network node according to a method for distributing D2D communications by the respective central network node, the central network node comprising:
a receiving module 101, configured to receive, in real time, a monitoring report of discovering D2D devices reported by each terminal;
an obtaining module 102, configured to obtain a service request of each terminal;
a detection module 103, configured to detect whether there is a terminal storing the service in terminals in the central network node;
the allocating module 104 allocates channel resources to the requester sending the service request and the target storing the service, and prompts the requester sending the service request and the target storing the service to establish direct communication.
It should be noted that the central network node is one of a 5G base station, a WiFi hotspot, and a 5 GCPE; the central network node is a 5G base station (5GgNB), and the corresponding central network is a 5G cellular network; the central network node is a WiFi hotspot; the corresponding central network is a WiFi network, the central network node is 5GCPE, and the corresponding network is 5 GCPE.
It should be noted that there may be many D2D terminals in the coverage area of the central network node, first, the central network node receives the monitoring reports of discovering D2D devices reported by these terminals in real time, wherein, the request terminal sends service intention to the central network node, after the central network node receives the service intention, judging whether a target terminal meeting the service intention of the requesting terminal exists in the network coverage range, if so, checking whether the ID-2 of the target terminal exists in the monitoring report of the discovery D2D device sent by the requesting terminal, if so, checking whether the ID-1 of the requesting terminal exists in the monitoring report of the discovery D2D device sent by the target terminal, if so, the central network node assigns the corresponding target terminal and the corresponding channel resource to the requester terminal, and facilitates the requester terminal and the target terminal to establish D2D direct communication.
The corresponding channel resources include the ID-2 of the target terminal, the channel, the frequency band, and other information resources required for establishing the D2D direct communication.
The invention gives the task of selecting the target terminal by the requester terminal and the task of using which frequency band to the central network node, because the central network node can clearly know how the current network load is and which terminals can become the target terminals of the requester terminal; an adaptive selection can be made automatically, if at this time it finds that its network load is relatively high, and for the case that its load is relatively high, traffic offloading is made.
In summary, the method for allocating D2D communication by a central network node in the present invention accurately matches a target terminal related to a service intention with available channel resources for a requester terminal, and prompts the requester and the target terminal D2D to communicate directly, thereby offloading the central network node traffic, sharing the traffic pressure of the central network traffic, improving the efficiency of the whole network, and improving the user experience.
Referring to fig. 5, a fifth aspect of the present invention provides a requester terminal according to a method of allocating D2D communications by a respective central network node, the requester terminal comprising:
a reporting module 201, configured to report a monitoring report of discovering the D2D device;
a message generating module 202, configured to generate a service request message and send the service request message to a central network node, so that the central network node receives the service request message;
a receiving module 203, configured to receive a channel resource allocated by a central network node;
the connection module 204 is configured to establish direct connection communication with a target party according to the channel resources allocated by the central network node.
The method comprises the steps that a requester terminal reports a monitoring report for finding D2D equipment to a central network node, wherein the monitoring report comprises all D2D terminals in a searching range of the requester terminal, wherein the monitoring report at least comprises ID-2 of a target party, and the requester terminal generates and sends a service request so that the central network node receives and requests to distribute the service; the central network node allocates channel resources for the D2D direct connection communication to the requester terminal, and the requester terminal establishes the D2D direct connection communication with a target terminal in the channel resources by using information in the channel resources, so that a service purpose is achieved through the target terminal.
It should be noted that there may be many D2D terminals in the coverage area of the central network node, first, the central network node receives the monitoring reports of discovering D2D devices reported by these terminals in real time, wherein, the request terminal sends service intention to the central network node, after the central network node receives the service intention, judging whether a target terminal meeting the service intention of the requesting terminal exists in the network coverage range, if so, checking whether the ID-2 of the target terminal exists in the monitoring report of the discovery D2D device sent by the requesting terminal, if so, checking whether the ID-1 of the requesting terminal exists in the monitoring report of the discovery D2D device sent by the target terminal, if so, the central network node assigns the corresponding target terminal and the corresponding channel resource to the requester terminal, and facilitates the requester terminal and the target terminal to establish D2D direct communication.
The corresponding channel resources include the ID-2 of the target terminal, the channel, the frequency band, and other information resources required for establishing the D2D direct communication.
The invention gives the task of selecting the target terminal by the requester terminal and the task of using which frequency band to the central network node, because for the central network node, it can be clear how the current network load is, that is, it can be clear which frequency bands are overloaded, which frequency bands are idle, and which terminals can become the target terminal of the requester terminal; an adaptive selection can be made automatically, if at this time it finds that its network load is relatively high, and for the case that its load is relatively high, traffic offloading is made.
In summary, the method for allocating D2D communication by a central network node in the present invention accurately matches a target terminal related to a service intention with available channel resources for a requester terminal, and prompts the requester and the target terminal D2D to communicate directly, thereby offloading the central network node traffic, sharing the traffic pressure of the central network traffic, improving the efficiency of the whole network, and improving the user experience.
Referring to fig. 6, a sixth aspect of the present invention provides a destination terminal according to a method of allocating D2D communications by a respective central network node, the destination terminal comprising:
a reporting module 301, configured to report a monitoring report of a device D2D;
a receiving module 302, configured to receive a channel resource allocated by a central network node and a direct connection communication establishment request sent by a requester;
the connection module 303 is configured to receive a direct connection communication request sent by a requester according to a channel resource allocated by the central network node, and establish a direct connection communication connection with the requester.
The target side terminal is also a terminal within the coverage range of the central network node, and similarly, the target side terminal reports a monitoring report for finding the D2D equipment to the central network node in real time, wherein the monitoring report at least comprises the ID-1 of the requesting side; and when the target terminal receives the channel resources distributed by the central network node and receives a request for establishing D2D direct connection communication initiated by the requester terminal contained in the channel resources, establishing direct connection communication with the requester terminal.
The channel resources comprise ID-1 of the requesting terminal, channels, frequency bands and other information resources required for establishing D2D direct communication.
The invention gives the task of selecting the target terminal by the requester terminal and the task of using which frequency band to the central network node, because for the central network node, it can be clear how the current network load is, that is, it can be clear which frequency bands are overloaded, which frequency bands are idle, and which terminals can become the target terminal of the requester terminal; an adaptive selection can be made automatically, if at this time it finds that its network load is relatively high, and for the case that its load is relatively high, traffic offloading is made.
In summary, the method for allocating D2D communication by a central network node in the present invention accurately matches a target terminal related to a service intention with available channel resources for a requester terminal, and prompts the requester and the target terminal D2D to communicate directly, thereby offloading the central network node traffic, sharing the traffic pressure of the central network traffic, improving the efficiency of the whole network, and improving the user experience.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (10)
1. A method for a central network node to distribute D2D communications, the method comprising:
the method comprises the steps that a central network node receives a monitoring report of discovery D2D equipment reported by each terminal, wherein each terminal at least comprises an ID-1 of a requester and an ID-2 of a target;
acquiring a service intention of a requester;
the central network node judges whether a target party capable of establishing D2D direct communication with the requester exists according to the service intention of the requester and the monitoring report of the D2D discovery device;
and if so, allocating corresponding channel resources to the requester and the target, and assigning the requester and the target to establish direct communication.
2. The method of claim 1, wherein the central network node is a 5G base station
3. The method of claim 1, wherein the central network node is a WiFi hotspot
4. The method of claim 1, wherein the central network node is a 5 GCPE.
5. A method for a central network node to distribute D2D communications, the method comprising:
requesting a central network node to report a monitoring report of discovering D2D equipment, wherein the monitoring report at least comprises an ID-2 of a target party;
generating and sending a service request so that the central network node receives and requests to distribute the service;
and if the central network node allocates the channel resources, establishing direct connection communication with a target party in the channel resources.
6. A method for a central network node to distribute D2D communications, the method comprising:
a target direction central network node reports a monitoring report of discovering D2D equipment, wherein the monitoring report at least comprises ID-1 of a requester;
and receiving channel resources distributed by the central network node, and establishing direct connection communication with a requester in the channel resources.
7. A central network node, characterized in that the central network node comprises:
the receiving module is used for receiving monitoring reports of discovering D2D devices reported by all terminals in real time;
the acquisition module is used for acquiring the service request of each terminal;
the detection module is used for detecting whether a terminal with the service exists in the terminals in the central network node;
and the allocation module is used for allocating channel resources to the requester sending the service request and the target storing the service, and prompting the requester sending the service request and the target storing the service to establish direct communication.
8. The central network node of claim 7, wherein the central network node is one of a 5G base station, a WiFi hotspot, and a 5 GCPE.
9. A requestor terminal, characterized in that the requestor terminal comprises:
the reporting module is used for reporting a monitoring report of the D2D device;
the message generating module is used for generating a service request message and sending the service request message to the central network node so that the central network node receives the service request message;
the receiving module is used for receiving the channel resources distributed by the central network node;
and the connection module is used for establishing direct connection communication with the target party according to the channel resources distributed by the central network node.
10. A target terminal, the target terminal comprising:
the reporting module is used for reporting a monitoring report of the D2D device;
the receiving module is used for receiving channel resources distributed by the central network node and a direct connection communication establishment request sent by a requesting party;
and the connection module is used for receiving the direct connection communication request sent by the requester according to the channel resources distributed by the central network node and establishing direct connection communication connection with the requester.
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