CN111836334A - Method for discovering node, method and equipment for establishing link - Google Patents
Method for discovering node, method and equipment for establishing link Download PDFInfo
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- H—ELECTRICITY
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- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- H—ELECTRICITY
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- H04W76/10—Connection setup
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Abstract
The embodiment of the invention provides a method for discovering nodes, a method for establishing links and equipment, wherein the method comprises the following steps: receiving a relay request, the relay request initiated by a second node; determining the first node as a relay node of the second node if the first node can provide a relay service; or, if the first node can provide the service of the first service, determining the first node as the service node of the second node; wherein the first service comprises: the traffic required by the second node. In the embodiment of the invention, the terminal can discover the relay node or the service node, so that the terminal can indirectly acquire the service of the service required by the terminal through the relay node or directly acquire the service through the service node even if the terminal is not in the area covered by the base station.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method for discovering nodes, a method for establishing links and equipment.
Background
In general, a terminal is connected to a base station through a Uu port and obtains a service of a service required by the terminal through the base station, however, when the terminal is not in an area covered by the base station (for example, the terminal cannot be connected to the base station through the Uu port), how the terminal obtains the service of the service required by the terminal is an urgent problem to be solved.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a method for discovering a node, a method for establishing a link, and a device, which solve the problem of how to acquire a service of a service required by a terminal when the terminal is not in an area covered by a base station.
In a first aspect, an embodiment of the present invention provides a method for discovering a node, which is applied to a first node, and includes:
receiving a relay request, the relay request initiated by a second node;
determining the first node as a relay node of the second node if the first node can provide a relay service; or, if the first node can provide the service of the first service, determining the first node as the service node of the second node;
wherein the first service comprises: the traffic required by the second node.
In a second aspect, an embodiment of the present invention further provides a method for discovering a node, which is applied to a second node, and includes:
sending a relay request to a first node, the relay request comprising one or more of:
information of the second node;
information of a first service, the first service comprising: a service required by the second node;
information of a relay node capable of providing relay service to the second node.
In a third aspect, an embodiment of the present invention further provides a method for establishing a link, which is applied to a fourth node, and includes:
receiving a first establishment request from a third node, the first establishment request requesting establishment of a link between the third node and the fourth node;
judging whether to establish a link between the third node and the fourth node or whether the fourth node can be used as a relay node according to the first establishment request;
wherein the relay node is capable of providing relay service to the third node.
In a fourth aspect, an embodiment of the present invention further provides a first node, including:
a first receiving module, configured to receive a relay request, where the relay request is initiated by a second node;
a first determining module, configured to determine the first node as a relay node of the second node if the first node can provide a relay service; or, if the first node can provide the service of the first service, determining the first node as the service node of the second node; wherein the first service comprises: the traffic required by the second node.
In a fifth aspect, an embodiment of the present invention further provides a second node, including:
a second sending module, configured to send a relay request to the first node, where the relay request includes one or more of:
information of the second node;
information of a first service, the first service comprising: a service required by the second node;
information of a relay node capable of providing relay service to the second node.
In a sixth aspect, an embodiment of the present invention further provides a third node, including:
a second receiving module, configured to receive indication information from a fourth node, where the indication information indicates node information that can serve as a relay node or indicates node information that can provide a service of a second service;
a third sending module, configured to send a first establishment request to the fourth node, where the first establishment request is used to request establishment of a link between the third node and the fourth node;
wherein the relay node is capable of providing relay service to the third node;
the second service comprises: the traffic required by the third node.
In a seventh aspect, an embodiment of the present invention further provides a fourth node, including:
a third receiving module, configured to receive a first establishment request from a third node, where the first establishment request is used to request establishment of a link between the third node and the fourth node;
the first setup request includes one or more of:
information of the third node;
information of the fourth node;
information of a second service, the second service comprising: the traffic required by the third node.
In an eighth aspect, an embodiment of the present invention further provides a terminal, including: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the method of discovering nodes according to the first and second aspects; alternatively, the steps of the method of link establishment as described in the third and fourth aspects are implemented.
In a ninth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for discovering nodes according to the first and second aspects; alternatively, the steps of the method of link establishment as described in the third and fourth aspects are implemented.
In the embodiment of the invention, the terminal can discover the relay node or the service node, so that the terminal can indirectly acquire the service of the service required by the terminal through the relay node or directly acquire the service through the service node even if the terminal is not in the area covered by the base station.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a flowchart of a method for discovering a node according to an embodiment of the present invention;
FIG. 2 is a second flowchart of a method for discovering a node according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for link establishment according to an embodiment of the present invention;
fig. 4 is a second flowchart of a link establishment method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a relay node discovery according to an embodiment of the present invention;
fig. 6 is a schematic diagram of link establishment according to an embodiment of the present invention;
FIG. 7 is a diagram of a first node according to an embodiment of the present invention;
FIG. 8 is a diagram of a second node according to an embodiment of the present invention;
FIG. 9 is a diagram of a third node according to an embodiment of the present invention;
FIG. 10 is a diagram illustrating a fourth node according to an embodiment of the present invention;
fig. 11 is a schematic diagram of a terminal 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 some, not all, embodiments of the present invention. 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 terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The techniques described herein are not limited to Long Time Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems.
The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in literature from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies.
Referring to fig. 1, an embodiment of the present invention provides a method for discovering a node, where an execution subject of the method is a first node, for example, a terminal, and the method includes: step 101 and step 102.
Step 101: receiving a relay request, the relay request initiated by a second node;
the above relay request may be referred to as: relay request between terminals (UE to UE relay request).
Step 102: determining the first node as a relay node of the second node if the first node can provide a relay service; or, if the first node can provide the service of the first service, determining the first node as the service node of the second node; wherein the first service comprises: the traffic required by the second node.
The relay service corresponds to a forwarding service, and if the first node is capable of relaying the service, the first node may forward the relay request to a next node, where the next node may be a terminal or a network device.
For example, UE2 in fig. 5 is located between UE1 and UE5 to provide relay service. Alternatively, the UE5 provides relay service between the UE2 and a base station. That is, the relay node may be connected to the network side through a transmission interface, for example, the first node may be connected to the network side through a Uu interface; or the relay node is not connected with the network side through a transmission interface.
In some embodiments, the relay request may include one or more of:
(1) information of the second node, such as an Internet Protocol (IP) address of the second node, and/or an Identity (ID) of the second node;
(2) information of a first service, the first service comprising: traffic required by the second node, such as direct link traffic (sidelink traffic);
(3) information of the relay node, such as an IP address of the relay node and/or an ID of the relay node.
In some embodiments, the relay node may be connected to the network side through a transmission interface, and after step 102, the method shown in fig. 1 may further include: and establishing a link between the first node and the second node according to the relay request.
For example, in fig. 5 UE2 establishes a link with UE1, or UE5 establishes a link with UE 2.
The specific mode can include: determining a plurality of links between the first node and the second node according to a relay request; an optimal link is selected from a plurality of links between the first node and the second node, for example, a link from a plurality of links according to signal quality or a link from a plurality of links according to transmission time.
In some embodiments, after step 101, the method further comprises:
and if the first node has no transmission interface with the network side or if the first node cannot provide the service of the first service, forwarding a relay request to other nodes.
For example, in fig. 5, there is no transport interface between UE2 and the network side, then UE2 may forward the relay request to UE 5.
In some embodiments, the forwarded relay request may further include one or more of the following:
(1) information of one or more nodes that forwarded the relay request, such as an IP address of a node and/or an ID of a node;
(2) one or more of the relays request information for the link through which it passes, such as an identification of the link.
In the embodiment of the invention, the terminal can discover the relay node or the service node through the relay request, so that the terminal can indirectly acquire the service of the service required by the terminal through the relay node or directly through the service node even if the terminal is not in the area covered by the base station.
Referring to fig. 2, an embodiment of the present invention further provides a method for discovering a node, where an execution subject of the method is a second node, for example, a UE, and the method includes: step 201.
Step 201: sending a relay request to a first node, the relay request comprising one or more of:
(1) information of the second node, such as an IP address of the second node and/or an ID of the second node;
(2) information of a first service, wherein the first service includes: services required by the second node, such as sidelink services;
(3) the relay node can provide a relay service for the second node, and the relay node may be connected to the network side through a transmission interface, or the relay node may not be connected to the network side through a transmission interface.
In some embodiments, in step 201, a discovery request (alternatively referred to as a discovery signal) is sent to the relay node; transmitting the relay request to the first node when a response (response) message of the discovery request is not received.
In some embodiments, in step 201, a discovery request sent by the relay node is intercepted; transmitting the relay request to the first node when the discovery request is not listened to.
In the embodiment of the invention, the terminal can discover the relay node or the service node through the relay request, so that the terminal can indirectly acquire the service of the service required by the terminal through the relay node or directly through the service node even if the terminal is not in the area covered by the base station.
Referring to fig. 3, an embodiment of the present invention further provides a method for establishing a link, where an execution subject of the method is a third node, for example, a UE, and the method includes: step 301 and step 302.
Step 301: receiving indication information from a fourth node, the indication information indicating node information that can serve as a relay node or indicating node information that can provide a service of a second service (e.g., sidelink service);
in some embodiments, the indication information includes one or more of: (1) information of a fourth node; (2) information of the second service, for example, the information may be a service identifier; (3) information of other nodes around the fourth node which can be used as relay nodes; (4) information of other nodes around the fourth node that can provide the service of the second service. Further, the information in (1), (3), and (4) above may be an IP address and/or an ID.
Step 302: sending a first establishment request to the fourth node, wherein the first establishment request is used for requesting to establish a link between the third node and the fourth node;
the relay node can provide a relay service for the third node, and optionally, the relay node is connected with a network side through a transmission interface, or the relay node is not connected with the network side through the transmission interface;
the second service comprises: the traffic required by the third node.
In some embodiments, the first setup request comprises one or more of:
(1) information of the third node, for example, an IP address of the third node and/or an ID of the third node;
(2) information of the fourth node, for example, an IP address of the fourth node and/or an ID of the fourth node;
(3) information of the second service.
In the embodiment of the invention, the terminal can discover the relay node or the service node, so that the terminal can indirectly acquire the service of the service required by the terminal through the relay node or directly acquire the service through the service node even if the terminal is not in the area covered by the base station.
Referring to fig. 4, an embodiment of the present invention further provides a method for establishing a link, where an execution subject of the method is a fourth node, for example, a UE, and the method includes: step 401 and step 402.
Step 401: receiving a first establishment request from a third node, the first establishment request requesting establishment of a link between the third node and the fourth node;
in some embodiments, the first setup request may include one or more of:
(1) information of the third node, for example, an IP address of the third node and/or an ID of the third node;
(2) information of the fourth node, for example, an IP address of the fourth node and/or an ID of the fourth node;
(3) the information of the second service, for example, the service identifier, may be sidelink service.
Step 402: judging whether to establish a link between the third node and the fourth node or whether the fourth node can be used as a relay node according to the first establishment request;
optionally, the relay node may be connected to the network side through a transmission interface (e.g., a Uu interface), or the relay node is not connected to the network side through the transmission interface.
In some embodiments, after step 402, the method further comprises:
and if the fourth node can be used as a relay node, selecting a fifth node with a relay function, and sending a second establishment request to the fifth node, wherein the second establishment request is used for requesting to establish a link between the fourth node and the fifth node.
In the embodiment of the invention, the terminal can discover the relay node or the service node, so that the terminal can indirectly acquire the service of the service required by the terminal through the relay node or directly acquire the service through the service node even if the terminal is not in the area covered by the base station.
The first embodiment is as follows: the UE searches for another UE to serve as a relay node.
One UE may look for another UE as performing sidelink service. As shown in fig. 5, UE1 needs to find UE5 for sidelink service.
Step 1: UE1 sends a discovery signal (discovery signal) to UE5, or UE1 listens to the discovery signal of UE 5.
If the UE1 does not receive a response (response) to the discovery signal of the UE5, or the UE1 does not listen to the discovery signal of the UE5, the UE1 sends a UE to UE relay request to peripheral UEs.
Further, the UE to UE relay request may include: information of UE1 and/or UE5, wherein the information of UE1 includes: UE1 ID and/or UE1 IP, information of UE5 includes: UE5 ID and/or UE5 IP.
Step 2: if a UE receives a UE to UE relay request sent by UE1, and the UE can relay to UE1, for example, the UE is UE 2; or a UE receiving a UE to UE relay request forwards the UE to UE relay request to other peripheral UEs until a UE capable of relaying (relay) and having a Uu interface appears, for example, UE 5.
Each time the UE to UE relay request is forwarded, the UE to UE relay request may carry one or more of the following items: information of a UE (e.g., UE1) that needs a relay; all forwarded UE information; link signal quality between UEs per retransmission.
For example, take the example that the UE6 forwards the UE to UE relay request.
When the UE6 forwards the UE to UE relay request to the UE5, the UE to UE relay request may carry:
(1) information of the UE1, e.g., UE1 ID and/or UE1 IP address;
(2) information of the UE2, e.g., UE2 ID and/or UE2 IP address;
(3) information of the UE6, e.g., UE6 ID and/or UE6 IP address;
(4) information of UE5, e.g., UE5 ID and/or UE5 IP address
(5) Link signal quality between UE1 and UE 2;
(6) link signal quality between UE2 and UE 6;
(7) link signal quality between UE6 and UE 5.
And step 3: after the relay node receives the UE to UE relay request, the relay node behavior may include:
the UE to UE relay is established to connect to the UE that initiated the UE to UE relay request, such as UE1 in fig. 5. The specific mode is as follows:
mode 1: the relay node may select a path (alternatively referred to as a link) to the UE1 according to the UE-to-UE relay request.
For example, the paths that the UE5 may select may be:
route 1: UE5< - > UE2< - > UE1
Route 2: UE5< - > UE6< - > UE2< - > UE1 < >
Mode 2: according to the UE to UE relay request, the optimal or best path is selected. For example: as shown in fig. 6, the way is established: UE5< - > UE2< - > UE 1.
The second embodiment: the UE seeks to serve one service node UE.
The UE needs a serving node of the service (S1), but the UE does not know which UE can provide S1, and the specific steps are as follows:
step 1: the UE sends a discovery signal (discovery signal) of S1 to the peripheral UEs.
For example, the UE1 sends the discovery signal of S1 to the peripheral UE2 and/or UE3, wherein the discovery signal of S1 may include one or more of the following:
(1) information of the UE1, e.g., UE1 ID and/or UE1 IP address;
(2) information of S1, for example, identification information of S1.
Step 2: the peripheral UE (e.g., UE2) receives the discovery signal of S1, and the behavior of the peripheral UE may include:
(1) if the surrounding UEs can provide the service of S1, the UE2 may establish a connection between the UEs 1 and begin serving the UE 1.
(2) If the UE cannot provide the service of S1, the peripheral UE may gradually forward the discovery signal of S1 to other nodes.
For example, the discovery signal that the UE2 forwarded to the UE6 may include:
(1) information of the UE1, e.g., UE1 ID and/or UE1 IP address;
(2) information of S1, such as identification information of S1;
(3) information of the UE2, such as a UE2 ID and/or a UE2 IP address.
(4) Link signal quality between UEs per retransmission, such as: link signal quality between UE1 and UE2, link signal quality between UE2 and UE 6.
In this embodiment, the discovery signal of S1 may be forwarded between UEs until a UE capable of providing S1 service is found.
The third embodiment of the invention: the UE indicates a service that can be a relay node or can provide a certain service.
If one UE can be used as a relay node, the UE broadcasts indication information on an air interface to indicate that the UE can be used as the relay node or can provide services of a certain service.
Optionally, the indication information may include one or more of:
(1) the ID and/or IP of the UE, such as the UE2 ID and/or UE2 IP;
(2) information of service services that the UE can provide;
(3) other peripheral IDs and/or IP addresses capable of serving as relay nodes are arranged around the UE;
(4) information of service services that other UEs around the UE can provide.
When one UE needs to find a relay node or a service capable of providing a certain service, the UE monitors other UEs to send a service signal capable of serving as the relay node or providing the certain service at an air interface.
If a UE (e.g., UE1) finds that a certain UE (e.g., UE2) sends a service signal capable of serving as a relay node or providing a certain service, the UE1 initiates a request message for establishing a transport interface to the UE 2.
Optionally, the request information may include one or more of:
(1) an ID and/or IP address of the UE, e.g., UE2 ID and/or UE2 IP address;
(2) information of service services that the UE can provide.
If a certain UE (e.g., UE2) receives an interface establishment request from another UE (e.g., UE1), UE2 may decide to accept the request to establish the interface and approve the establishment.
If the UE2 agrees to act as a relay node, the UE2 may select a forwarding node (e.g., UE5) and initiate a request message to the UE5 to establish a forwarding interface.
Optionally, the request information of the forwarding interface may include one or more of the following items:
(1) information of the UE1, e.g., UE1 ID and/or UE1 IP address;
(2) information of the service, such as service identification information;
(3) information of the UE2, such as a UE2 ID and/or a UE2 IP address.
The embodiment of the invention also provides a first node, and as the principle of solving the problem of the first node is similar to the method in the embodiment of the invention, the implementation of the first node can refer to the implementation of the method, and the repeated parts are not described again.
Referring to fig. 7, an embodiment of the present invention further provides a first node, where the first node 700 includes:
a first receiving module 701, configured to receive a relay request, where the relay request is initiated by a second node;
a first determining module 702, configured to determine the first node as a relay node of the second node if the first node can provide a relay service; or, if the first node can provide the service of the first service, determining the first node as the service node of the second node; wherein the first service comprises: the traffic required by the second node.
For example, the first node is connected to the network side via a Uu interface.
In some embodiments, the relay request includes one or more of:
(1) information of the second node, such as an Internet Protocol (IP) address of the second node, or an Identity (ID) of the second node;
(2) information of a first service, the first service comprising: a service required by the second node;
(3) information of the relay node, such as an IP address of the relay node, or an ID of the relay node.
In some embodiments, the first node 700 may further comprise: and the first establishing module is used for establishing a link between the first node and the second node according to the relay request when the relay node can be connected with the network side through the transmission interface. The specific mode can include: determining a plurality of links between the first node and the second node according to a relay request; a link is selected from a plurality of links between the first node and the second node, for example, a link from a plurality of links based on signal quality or a link from a plurality of links based on transmission time.
In some embodiments, the first node 700 may further comprise: a first sending module, configured to forward a relay request to another node if there is no transmission interface between the first node and a network side, or if the first node cannot provide the service of the first service.
In some embodiments, the forwarded relay request further includes one or more of:
(1) information of one or more nodes that forwarded the relay request;
(2) information of the link through which one or more of the relays request to traverse, such as the IP address of a node, or the ID of a node.
The first node provided in the embodiment of the present invention may implement the embodiment shown in fig. 1, and the implementation principle and the technical effect are similar, which are not described herein again.
The embodiment of the invention also provides a second node, and as the principle of solving the problem of the second node is similar to the method in the embodiment of the invention, the implementation of the second node can refer to the implementation of the method, and repeated parts are not described again.
Referring to fig. 8, an embodiment of the present invention further provides a second node, where the second node 800 includes:
a second sending module 801, configured to send a relay request to the first node, where the relay request includes one or more of the following:
(1) information of the second node, such as an IP address of the second node, or an ID of the second node;
(2) information of a first service, the first service comprising: a service required by the second node;
(3) the relay node may provide a relay service for the second node, and optionally, the relay node is connected to the network side through a transmission interface, or the relay node is not connected to the network side through a transmission interface.
In some embodiments, the second sending module 801 is further configured to send the relay request to the first node when a response message of the discovery request is not received.
In some embodiments, the second sending module 801 is further configured to send the relay request to the first node when the discovery request sent by the relay node is not intercepted.
The second node provided in the embodiment of the present invention may implement the embodiment shown in fig. 2, which has similar implementation principles and technical effects, and this embodiment is not described herein again.
The embodiment of the invention also provides a third node, and as the principle of solving the problem of the third node is similar to the method in the embodiment of the invention, the implementation of the third node can refer to the implementation of the method, and the repeated parts are not described again.
Referring to fig. 9, an embodiment of the present invention further provides a third node, where the third node 900 includes:
a second receiving module 901, configured to receive indication information from a fourth node, where the indication information indicates node information that can serve as a relay node or indicates node information that can provide a service of a second service;
in some embodiments, the indication information includes one or more of: (1) information of a fourth node; (2) information of a second service; (3) information of other nodes around the fourth node which can be used as relay nodes; (4) information of other nodes around the fourth node that can provide the service of the second service. Further, the information may be an IP address and/or an ID.
A third sending module 902, configured to send a first establishment request to the fourth node, where the first establishment request is used to request establishment of a link between the third node and the fourth node;
the relay node can provide a relay service for the third node, and optionally, the relay node is connected with a network side through a transmission interface, or the relay node is not connected with the network side through the transmission interface;
the second service comprises: the traffic required by the third node.
In some embodiments, the first setup request comprises one or more of:
(1) information of the third node, for example, an IP address of the third node and/or an ID of the third node;
(2) information of the fourth node, for example, an IP address of the fourth node and/or an ID of the fourth node;
(3) information of the second service.
The third node provided in the embodiment of the present invention may execute the embodiment shown in fig. 3, which has similar implementation principles and technical effects, and this embodiment is not described herein again.
The embodiment of the invention also provides a fourth node, and as the principle of solving the problem of the fourth node is similar to the method in the embodiment of the invention, the implementation of the fourth node can refer to the implementation of the method, and repeated parts are not described again.
Referring to fig. 10, an embodiment of the present invention further provides a fourth node, where the fourth node 1000 includes:
a third receiving module 1001, configured to receive a first establishment request from a third node, where the first establishment request is used to request establishment of a link between the third node and the fourth node;
in some embodiments, the first setup request comprises one or more of:
(1) information of the third node, for example, an IP address of the third node and/or an ID of the third node;
(2) information of the fourth node, for example, an IP address of the fourth node and/or an ID of the fourth node;
(3) information of the second service.
A determining module 1002, configured to determine, according to the first establishment request, whether to establish a link between the third node and the fourth node, or determine whether the fourth node can serve as a relay node;
optionally, the relay node is connected to the network side through a transmission interface, or the relay node is not connected to the network side through a transmission interface.
In some embodiments, the fourth node 1000 further comprises: a fourth sending module, configured to select a fifth node with a relay function if the fourth node can serve as a relay node, and send a second establishment request to the fifth node, where the second establishment request is used to request establishment of a link between the fourth node and the fifth node.
The fourth node provided in the embodiment of the present invention may execute the above-described embodiment shown in fig. 4, which has similar implementation principles and technical effects, and this embodiment is not described herein again.
As shown in fig. 11, the terminal 1100 shown in fig. 11 includes: at least one processor 1101, memory 1102, at least one network interface 1104, and a user interface 1103. The various components in terminal 1100 are coupled together by a bus system 1105. It is understood that the bus system 1105 is used to enable communications among the components. The bus system 1105 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 11 as the bus system 1105.
The user interface 1103 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It is to be understood that the memory 1102 in embodiments of the present invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double data rate Synchronous Dynamic random access memory (ddr DRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1102 of the subject systems and methods is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 1102 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 11021 and application programs 11022.
The operating system 11021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 11022 contains various applications such as a Media Player (Media Player), a Browser (Browser), etc. for implementing various application services. Programs that implement methods in accordance with embodiments of the invention may be included in application 11022.
In an embodiment of the present invention, the steps described in the methods shown in fig. 1 to 4 above are implemented by calling a program or an instruction stored in the memory 1102, specifically, a program or an instruction stored in the application 11022.
The terminal provided in the embodiment of the present invention may execute the method embodiments shown in fig. 1 to 4, which have similar implementation principles and technical effects, and are not described herein again.
The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may consist of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable hard disk, a compact disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (21)
1. A method for discovering a node, applied to a first node, includes:
receiving a relay request, the relay request initiated by a second node;
determining the first node as a relay node of the second node if the first node can provide a relay service; or, if the first node can provide the service of the first service, determining the first node as the service node of the second node;
wherein the first service comprises: the traffic required by the second node.
2. The method of claim 1, further comprising:
and if the first node has no transmission interface with the network side or if the first node cannot provide the service of the first service, forwarding a relay request to other nodes.
3. The method of claim 1, wherein the first node is connected to the network side via a transport interface.
4. The method of claim 3, wherein after determining the first node as the relay node for the second node, the method further comprises:
and establishing a link between the first node and the second node according to the relay request.
5. The method of claim 4, wherein establishing the link between the first node and the second node according to the relay request comprises:
determining a plurality of links between the first node and the second node according to the relay request;
selecting an optimal link from a plurality of links between the first node and the second node.
6. The method of claim 1, wherein the relay request comprises one or more of:
information of the second node;
information of a first service, the first service comprising: a service required by the second node;
information of the relay node.
7. The method of claim 6, wherein the forwarded relay request further comprises one or more of:
information of one or more nodes that forwarded the relay request;
one or more of the relays request information for the link through which it passes.
8. A method for discovering a node, applied to a second node, includes:
sending a relay request to a first node, the relay request comprising one or more of:
information of the second node;
information of a first service, the first service comprising: a service required by the second node;
information of a relay node capable of providing relay service to the second node.
9. The method of claim 8, wherein sending a relay request to the first node comprises:
sending a discovery request to the relay node;
when the response message of the discovery request is not received, sending the relay request to the first node;
or,
monitoring a discovery request sent by the relay node;
transmitting the relay request to the first node when the discovery request is not listened to.
10. A method for link establishment applied to a third node, comprising:
receiving indication information from a fourth node, the indication information indicating node information that can serve as a relay node or indicating node information that can provide a service of a second service;
sending a first establishment request to the fourth node, wherein the first establishment request is used for requesting to establish a link between the third node and the fourth node;
wherein the relay node is capable of providing relay service to the third node;
the second service comprises: the traffic required by the third node.
11. The method of claim 10, wherein the indication information comprises one or more of:
information of the fourth node;
information of the second service;
information of other nodes around the fourth node which can be used as relay nodes;
information of other nodes around the fourth node that can provide the service of the second service.
12. The method of claim 10, wherein the first setup request comprises one or more of:
information of the third node;
information of the fourth node;
information of the second service.
13. A method for link establishment, applied to a fourth node, the method comprising:
receiving a first establishment request from a third node, the first establishment request requesting establishment of a link between the third node and the fourth node;
judging whether to establish a link between the third node and the fourth node or whether the fourth node can be used as a relay node according to the first establishment request;
wherein the relay node is capable of providing relay service to the third node.
14. The method of claim 13, further comprising:
and if the fourth node can be used as a relay node, selecting a fifth node with a relay function, and sending a second establishment request to the fifth node, wherein the second establishment request is used for requesting to establish a link between the fourth node and the fifth node.
15. The method of claim 13, wherein the first or second setup request comprises one or more of:
information of the third node;
information of the fourth node;
information of a second service, the second service comprising: the traffic required by the third node.
16. A first node, comprising:
a first receiving module, configured to receive a relay request, where the relay request is initiated by a second node;
a first determining module, configured to determine the first node as a relay node of the second node if the first node can provide a relay service; or, if the first node can provide the service of the first service, determining the first node as the service node of the second node; wherein the first service comprises: the traffic required by the second node.
17. A second node, comprising:
a second sending module, configured to send a relay request to the first node, where the relay request includes one or more of:
information of the second node;
information of a first service, the first service comprising: a service required by the second node;
information of a relay node capable of providing relay service to the second node.
18. A third node, comprising:
a second receiving module, configured to receive indication information from a fourth node, where the indication information indicates node information that can serve as a relay node or indicates node information that can provide a service of a second service;
a third sending module, configured to send a first establishment request to the fourth node, where the first establishment request is used to request establishment of a link between the third node and the fourth node;
wherein the relay node is capable of providing relay service to the third node;
the second service comprises: the traffic required by the third node.
19. A fourth node, comprising:
a third receiving module, configured to receive a first establishment request from a third node, where the first establishment request is used to request establishment of a link between the third node and the fourth node;
the first setup request includes one or more of:
information of the third node;
information of the fourth node;
information of a second service, the second service comprising: the traffic required by the third node.
20. A terminal, comprising: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the method of discovering nodes according to any of claims 1 to 9; or the steps of a method of implementing a link establishment according to any of claims 10 to 15.
21. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of discovering nodes according to any one of claims 1 to 9; or the steps of a method of implementing a link establishment according to any of claims 10 to 15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910775784.8A CN111836334B (en) | 2019-08-21 | 2019-08-21 | Method for discovering node, method and equipment for establishing link |
| PCT/CN2020/110462 WO2021032186A1 (en) | 2019-08-21 | 2020-08-21 | Method for node discovery, link establishment method, and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910775784.8A CN111836334B (en) | 2019-08-21 | 2019-08-21 | Method for discovering node, method and equipment for establishing link |
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| CN111836334B CN111836334B (en) | 2023-03-14 |
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| CN111836334B (en) | 2023-03-14 |
| WO2021032186A1 (en) | 2021-02-25 |
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