CN117460019A - Method, device and system for determining relay terminal - Google Patents
Method, device and system for determining relay terminal Download PDFInfo
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- CN117460019A CN117460019A CN202210847307.XA CN202210847307A CN117460019A CN 117460019 A CN117460019 A CN 117460019A CN 202210847307 A CN202210847307 A CN 202210847307A CN 117460019 A CN117460019 A CN 117460019A
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- 238000004891 communication Methods 0.000 claims description 8
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- 238000010295 mobile communication Methods 0.000 abstract description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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Abstract
The disclosure relates to a method, a device and a system for determining a relay terminal, and relates to the technical field of mobile communication. The method is applied to the remote terminal and comprises the following steps: in a first mode, a discovery request message is sent to a plurality of relay terminals, wherein the discovery request message carries a plurality of relay mode identifiers; receiving a discovery response message sent by at least one of the plurality of relay terminals; and determining the relay terminal serving the remote terminal according to the discovery response message. By the method, the processing efficiency of relay terminal selection can be improved.
Description
Technical Field
The present disclosure relates to the field of mobile communications technologies, and in particular, to a method, an apparatus, and a system for determining a relay terminal.
Background
Device-to-device communication is also referred to as proximity services (Proximity Service, proSe) in the third generation partnership project (3 rd Generation Partnership Project, 3GPP for short).
In proximity services, a remote terminal may connect to a network through a relay terminal in proximity. The remote terminal may select the relay terminal for which to serve. For example, when a relay terminal serving a remote terminal is no longer suitable, the remote terminal may perform a reselection of the relay terminal.
Disclosure of Invention
The disclosure provides a method, a device and a system for determining a relay terminal.
According to a first aspect of the present disclosure, there is provided a method of determining a relay terminal, comprising: in a first mode, a discovery request message is sent to a plurality of relay terminals, wherein the discovery request message carries a plurality of relay mode identifiers; receiving a discovery response message sent by at least one of the plurality of relay terminals; and determining the relay terminal serving the remote terminal according to the discovery response message.
In some embodiments, the sending the discovery request message to the plurality of relay terminals includes: and sending a plurality of discovery request messages to a plurality of relay terminals, wherein each of the plurality of discovery request messages carries a relay mode identifier.
In some embodiments, multiple discovery request messages are sent simultaneously to multiple relay terminals in a broadcast manner.
In some embodiments, the relay mode identification includes a relay service code.
In some embodiments, determining, from the discovery response message, a relay terminal serving the remote terminal includes: and determining the relay terminal serving the remote terminal according to all the discovery response messages received in the timer.
In some embodiments, determining a relay terminal serving the remote terminal based on all discovery response messages received within a timer time comprises: determining information of candidate relay terminals according to all discovery response messages received in the timer time; and determining the relay terminal serving the remote terminal according to the relay terminal selection strategy and the information of the candidate relay terminal.
In some embodiments, determining a relay terminal serving the remote terminal based on a relay terminal selection policy and information of the candidate relay terminal comprises: and under the condition that the to-be-relayed services of the remote terminal are multiple, determining the to-be-relayed services as the relay terminal according to the relay terminal selection strategy and the information of the candidate relay terminal.
In some embodiments, the method of determining a relay terminal is performed if a relay terminal reselection trigger condition is met.
In some embodiments, the relay terminal reselection trigger condition includes: the communication signal strength of the relay terminal currently serving the remote terminal is below a threshold.
In some embodiments, further comprising: sending a relay reselection request to a proximity service application server; receiving a relay reselection rule from the proximity service application server; and determining the relay terminal selection strategy according to the relay reselection rule.
In some embodiments, the relay terminal selection policy includes: priority order rules of the relay scheme.
In some embodiments, further comprising: in a second mode, receiving a discovery notification message sent by a relay terminal, wherein the discovery notification message carries a relay mode supported by the relay terminal; and determining a relay terminal serving the remote terminal according to the discovery notification message.
In some embodiments, the receiving the discovery notification message sent by the relay terminal includes: and receiving a plurality of discovery notification messages sent by the relay terminal under the condition that the relay terminal supports a plurality of relay modes, wherein each of the plurality of discovery notification messages carries one relay mode supported by the relay terminal.
In some embodiments, determining, from the discovery notification message, a relay terminal serving the remote terminal includes: determining information of candidate relay terminals according to all discovery notification messages received in the timer time; and determining the relay terminal serving the remote terminal according to the relay terminal selection strategy and the information of the candidate relay terminal.
In some embodiments, the discovery request message is a 5G proximity services terminal-to-network relay discovery request message and the discovery response message is a 5G proximity services terminal-to-network relay discovery response message.
According to a second aspect of the present disclosure, there is provided an apparatus for determining a relay terminal, provided at a remote terminal, including: the sending module is configured to send a discovery request message to a plurality of relay terminals in a first mode, wherein the discovery request message carries a plurality of relay mode identifiers; a receiving module configured to receive a discovery response message transmitted by at least one of the plurality of relay terminals; and the determining module is configured to determine a relay terminal serving the remote terminal according to the discovery response message.
According to a third aspect of the present disclosure, there is provided an apparatus for determining a relay terminal, including: a memory; and a processor coupled to the memory, the processor configured to perform the method of determining a relay terminal of any of the embodiments described above based on instructions stored in the memory.
According to a fourth aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of determining a relay terminal according to any of the above embodiments.
According to a fifth aspect of the present disclosure, there is provided a remote terminal comprising: the apparatus for determining a relay terminal according to any one of the above embodiments.
According to a sixth aspect of the present disclosure, there is provided a proximity services system comprising: the remote terminal is configured to send a discovery request message to a plurality of relay terminals in a first mode, wherein the discovery request message carries a plurality of relay mode identifiers; at least one of the plurality of relay terminals configured to transmit a discovery response message to the remote terminal; the remote terminal is further configured to determine a relay terminal serving the remote terminal based on the discovery response message.
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The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a flowchart illustrating a method of determining a relay terminal according to some embodiments of the present disclosure;
fig. 2 is a flowchart illustrating a method of determining a relay terminal according to further embodiments of the present disclosure;
fig. 3 is a flowchart illustrating a method of determining a relay terminal according to further embodiments of the present disclosure;
fig. 4 is a block diagram illustrating an apparatus for determining a relay terminal according to some embodiments of the present disclosure;
FIG. 5 is a block diagram illustrating a remote terminal according to some embodiments of the present disclosure;
fig. 6 is a schematic diagram illustrating a component architecture of a proximity services system in accordance with some embodiments of the present disclosure;
fig. 7 is a block diagram illustrating an apparatus for determining a relay terminal according to other embodiments of the present disclosure;
FIG. 8 is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the related art, the relay terminal selection process in the proximity service system has the problems of low processing efficiency, non-ideal selection effect and the like. For example, in the related art, the remote terminal sends a discovery request message carrying a relay mode identifier, and then there may be a situation that the relay terminal feedback message is not available for a long time, which results in that the relay terminal selection process takes too long.
Fig. 1 is a flowchart illustrating a method of determining a relay terminal according to some embodiments of the present disclosure. The method of the disclosed embodiments is performed by a remote terminal. As shown in fig. 1, a method for determining a relay terminal according to an embodiment of the present disclosure includes:
step S110: and sending the discovery request message to the plurality of relay terminals.
The discovery request message sent by the remote terminal carries multiple relay mode identifiers. The multiple relay mode identifiers carried by the discovery request message are used for indicating multiple optional relay modes required by the remote terminal. Illustratively, the relay modes required by the remote terminal include at least one of an L2 relay mode, a relay mode in which L3 supports a Non-3GPP interworking function (Non-3 GPP InterWorking Function, abbreviated as N3 IWF), and a relay mode in which L3 does not support a Non-3GPP interworking function.
In some embodiments, the remote terminal sends a plurality of discovery request messages to a plurality of relay terminals, and each discovery request message carries a relay mode identifier. For example, the remote terminal sends multiple discovery request messages simultaneously in a broadcast manner, and each discovery request message carries a relay manner identifier. By broadcasting a plurality of discovery request messages carrying different relay mode identifiers at the same time, the remote terminal can receive the discovery response message of the appropriate relay terminal more quickly, and the processing efficiency of the relay terminal selection flow is improved.
In other embodiments, the remote terminal sends a discovery request message to the plurality of relay terminals, and the discovery request message carries a plurality of relay mode identifiers. For example, the remote terminal sends a discovery request message in a broadcast manner, and the discovery request message carries multiple relay mode identifiers. By carrying multiple relay mode identifiers in one broadcasted discovery request message, the remote terminal can receive the discovery response message of the appropriate relay terminal more quickly, and the processing efficiency of the relay terminal selection flow is improved.
In some embodiments, the relay mode identification includes a relay service code (Relay Service Code, RSC for short).
In some embodiments, the method of an embodiment of the present disclosure further comprises: before step S110, it is confirmed that the relay terminal selection trigger condition is satisfied. Illustratively, the relay terminal selection trigger condition includes at least one of a relay terminal reselection trigger condition, and a relay terminal initial selection trigger condition. The relay terminal reselection triggering condition refers to a triggering condition that the remote terminal has established a connection with the relay terminal, but needs to perform relay terminal reselection for some reasons, and the relay terminal initial selection triggering condition refers to a triggering condition that the relay terminal initially selects the relay terminal.
In some embodiments, the relay terminal reselection trigger condition includes: the communication signal strength of the relay terminal currently serving the remote terminal is below a threshold.
Step S120: a discovery response message transmitted by at least one of the plurality of relay terminals is received.
In some embodiments, the discovery response message includes an identification of the relay mode supported by the relay terminal. For example, the discovery response message includes a relay service code supported by the relay terminal. In addition, the discovery response message may further include information such as a type of the discovery message, an identification of the relay terminal, and the like.
Step S130: and determining the relay terminal serving the remote terminal according to the discovery response message.
In some embodiments, the remote terminal determines the relay terminal serving the remote terminal based on all discovery response messages received within a timer time. For example, assuming that the duration of the timer in the start and end time is t1, the remote terminal determines, according to all discovery response messages received during the duration of t1, a relay terminal serving the remote terminal. By setting the timer time, the time consumed by the remote terminal for waiting for the feedback information of the relay terminal can be reduced, and the processing efficiency of selecting the relay terminal by the remote terminal can be improved.
In some embodiments, the remote terminal determining a relay terminal serving the remote terminal based on all discovery response messages received in the timer time includes: the remote terminal determines the information of the candidate relay terminal according to all discovery response messages received in the timer time; and determining the relay terminal serving as the remote terminal according to the relay terminal selection strategy and the candidate relay terminal information.
Illustratively, the relay terminal selection policy includes a priority ordering rule of the relay mode, and the information of the candidate relay terminal includes an identification of the relay mode supported by the candidate relay terminal.
For example, the remote terminal parses all discovery response messages received within the timer time to determine which relay terminals are candidates and which relay modes are supported by the candidate relay terminals; and the remote terminal selects the optimal relay terminal from the candidate relay terminals as the relay terminal serving the remote terminal according to the priority ordering rule of the relay mode and the relay mode supported by the candidate relay terminal.
In the embodiment of the disclosure, the relay terminal selection process is optimized through the steps, so that the processing efficiency of relay terminal selection and the selection effect of the relay terminal can be improved, and the relay service performance and the user experience are improved. Compared with the related art, the method has the advantages that the discovery request messages carrying the identifiers of different relay modes are sent at the same time, and when the discovery response messages are received, the relay terminals are selected by combining the strategies in a timer mode, so that the appropriate relay terminals can be selected more quickly.
Fig. 2 is a flowchart illustrating a method of determining a relay terminal according to further embodiments of the present disclosure. As shown in fig. 2, a method for determining a relay terminal according to an embodiment of the present disclosure includes:
step 210: the remote terminal obtains a relay terminal selection policy.
In the related art, the direct discovery of devices in proximity services includes two modes: a first mode and a second mode. The method for determining a relay terminal in the embodiment of the disclosure includes a first mode. I.e. in the first mode, the relay terminal is determined by the flow shown in fig. 2.
In some embodiments, the remote terminal obtains the relay terminal selection policy after confirming that the relay terminal reselection trigger condition is satisfied, including: the remote terminal sends a relay reselection request to a proximity service application server; the remote terminal receives the relay reselection rule from the proximity service application server; and the remote terminal determines a relay terminal selection strategy according to the relay reselection rule.
Illustratively, the relay reselection request carries information such as an identification of a connection mode (or an identification called a relay mode) between the remote terminal and the current relay terminal. Illustratively, the relay reselection rule includes a relay-style prioritization rule.
For example, when detecting that the communication quality of the currently connected relay terminal is poor, the remote terminal confirms that the relay terminal reselection trigger condition is satisfied. The remote terminal then sends a relay reselection request to the proximity services application server. After receiving the relay reselection request, the proximity service application server configures a corresponding relay mode priority ordering rule for the remote terminal, and sends the relay mode priority ordering rule corresponding to the remote terminal. Under the condition that no other routing rules exist locally, the remote terminal takes the relay mode priority ordering rule as a relay terminal selection strategy; and under the condition that other routing rules exist locally, determining a relay terminal selection strategy according to the other routing rules and the relay mode priority ordering rules. And dynamically acquiring a relay terminal selection strategy from the adjacent service application server after confirming that the relay terminal reselection is needed, so that more reasonable relay reselection rules are configured for the remote terminal, the relay terminal reselection effect is improved, and session continuity and service continuity are ensured as much as possible.
In other embodiments, the remote terminal obtains the relay terminal selection policy after confirming that the relay terminal reselection trigger condition is satisfied, including: the remote terminal obtains relay terminal selection policy from the local. For example, the remote terminal receives and stores the relay terminal selection policy issued by the proximity service application server in advance, and after confirming that the relay terminal reselection trigger condition is satisfied, the remote terminal obtains the relay terminal selection policy from the local. And after confirming that the relay terminal reselection is needed, acquiring a relay terminal selection strategy from the local, so that communication with a proximity service application server is reduced, and the processing efficiency of a relay terminal selection flow is improved.
Step 220: the remote terminal transmits a plurality of discovery request messages to the relay terminal.
In some embodiments, the discovery request message is a 5G proximity services terminal-to-network relay discovery request message (5G ProSe UE-to-Network Relay Discovery Solicitation message).
The discovery request message carries a relay mode identifier and is used for indicating a relay mode required by the remote terminal. In some embodiments, the relay mode identification includes a relay service code (Relay Service Code, RSC for short).
In some embodiments, the remote terminal broadcasts multiple discovery request messages simultaneously, each carrying a relay mode identification. For example, the remote terminal broadcasts discovery request messages 1, 2 and 3 simultaneously, wherein the discovery request message 1 carries an identifier of a relay mode of L2, the discovery request message 2 carries an identifier of a relay mode of L3 supporting a non-3GPP interworking function, and the discovery request message 3 carries an identifier of a relay mode of L3 not supporting a non-3GPP interworking function.
Step 230: the relay terminal transmits a discovery response message to the remote terminal.
In some embodiments, after the relay terminal monitors the discovery request message, judging whether the discovery request message is matched with the requirement of the remote terminal according to factors such as a self-supported relay mode, and sending a discovery response message to the remote terminal when judging that the discovery request message is matched with the requirement of the remote terminal; and in the case that the demand of the remote terminal is not matched, the discovery response message is not sent to the remote terminal. For example, after monitoring the discovery request message broadcast by the remote terminal 1, the relay terminal 1 determines that the supported relay method matches the requirement of the remote terminal 1, and thus transmits a discovery response message to the remote terminal 1, and the relay terminal 2 determines that the supported relay method does not match the requirement of the remote terminal 1, and thus does not transmit a discovery response message to the remote terminal 1.
In some embodiments, the discovery response message is a 5G proximity services terminal-to-network relay discovery response message.
In some embodiments, the discovery response message includes an identification of the relay mode supported by the relay terminal.
Step 240: and the remote terminal determines the relay terminal serving the remote terminal according to the relay terminal selection strategy and the discovery response message received in the timer time.
In some embodiments, step S240 includes: the remote terminal determines the information of the candidate relay terminal according to the discovery response message received in the timer time; and under the condition that the service to be relayed of the remote terminal is one type, determining the relay terminal serving the remote terminal according to the relay terminal selection strategy and the candidate relay terminal information.
In other embodiments, step S240 includes: the remote terminal determines the information of the candidate relay terminal according to the discovery response message received in the timer time; and under the condition that the to-be-relayed services of the remote terminal are multiple, determining the to-be-relayed services as the relay terminal of each to-be-relayed service according to the relay terminal selection strategy and the candidate relay terminal information. Through the steps, the relay requirements of the multi-service scene can be met, and the service performance and the user experience are improved.
In some embodiments, the relay terminal selection policy includes: priority ordering rules of the relay mode; the information of the candidate relay terminal includes: and (5) identifying the relay modes supported by the candidate relay terminals.
In the embodiment of the disclosure, the relay terminal selection process is optimized through the steps, so that the processing efficiency of relay terminal selection and the selection effect of the relay terminal can be improved, and the relay service performance and the user experience are improved. Compared with the related art, the method has the advantages that the discovery request messages carrying the identifiers of different relay modes are sent at the same time, and when the discovery response messages are received, the relay terminals are selected by combining the strategies in a timer mode, so that the appropriate relay terminals can be selected more quickly.
Fig. 3 is a flowchart illustrating a method of determining a relay terminal according to further embodiments of the present disclosure. The method for determining the relay terminal in the embodiment of the disclosure comprises two modes of direct discovery of devices, wherein a first mode is shown in fig. 2, and a second mode is shown in fig. 3. The process flow in the second mode includes:
step 310: the remote terminal obtains a relay terminal selection policy.
In some embodiments, the remote terminal obtains the relay terminal selection policy after confirming that the relay terminal reselection trigger condition is satisfied, including: the remote terminal sends a relay reselection request to a proximity service application server; the remote terminal receives the relay reselection rule from the proximity service application server; and the remote terminal determines a relay terminal selection strategy according to the relay reselection rule.
Illustratively, the relay reselection request carries information such as an identification of a connection mode (or an identification called a relay mode) between the remote terminal and the current relay terminal. Illustratively, the relay reselection rule includes a relay-style prioritization rule.
For example, when detecting that the communication quality of the currently connected relay terminal is poor, the remote terminal confirms that the relay terminal reselection trigger condition is satisfied. The remote terminal then sends a relay reselection request to the proximity services application server. After receiving the relay reselection request, the proximity service application server configures a corresponding relay mode priority ordering rule for the remote terminal, and sends the relay mode priority ordering rule corresponding to the remote terminal. Under the condition that no other routing rules exist locally, the remote terminal takes the relay mode priority ordering rule as a relay terminal selection strategy; and under the condition that other routing rules exist locally, determining a relay terminal selection strategy according to the other routing rules and the relay mode priority ordering rules. And dynamically acquiring a relay terminal selection strategy from the adjacent service application server after confirming that the relay terminal reselection is needed, so that more reasonable relay reselection rules are configured for the remote terminal, the relay terminal reselection effect is improved, and session continuity and service continuity are ensured as much as possible.
In other embodiments, the remote terminal obtains the relay terminal selection policy after confirming that the relay terminal reselection trigger condition is satisfied, including: the remote terminal obtains relay terminal selection policy from the local. For example, the remote terminal receives and stores the relay terminal selection policy issued by the proximity service application server in advance, and after confirming that the relay terminal reselection trigger condition is satisfied, the remote terminal obtains the relay terminal selection policy from the local. And after confirming that the relay terminal reselection is needed, acquiring a relay terminal selection strategy from the local, so that communication with a proximity service application server is reduced, and the processing efficiency of a relay terminal selection flow is improved.
Step 320: the relay terminal transmits a discovery notification message.
In some embodiments, the discovery notification message carries information such as a relay mode supported by the relay terminal, an identifier of the relay terminal, and the like.
In some embodiments, in the case that the relay terminal supports multiple relay modes, the relay terminal simultaneously transmits multiple discovery notification messages, each of which carries one relay mode supported by the relay terminal. For example, the relay terminal simultaneously transmits a plurality of discovery notification messages in a broadcast manner, and different discovery notification messages carry identifiers of different relay manners supported by the relay terminal.
In other embodiments, in the case that the relay terminal supports multiple relay modes, the relay terminal sends one discovery notification message, and the discovery notification message carries multiple relay modes supported by the relay terminal.
Step 330: and the remote terminal determines the relay terminal serving the remote terminal according to the relay terminal selection strategy and the discovery notification message received in the timer time.
In some embodiments, the remote terminal determines information of candidate relay terminals based on all discovery notification messages (Discovery Announcement message) received within a timer time; and the remote terminal determines the relay terminal serving the remote terminal according to the relay terminal selection strategy and the candidate relay terminal information.
In some embodiments, the discovery notification message is a terminal-to-network relay discovery notification message.
In some embodiments, the relay terminal selection policy includes a priority ordering rule of the relay mode; the information of the candidate relay terminal includes an identification of a relay mode supported by the candidate relay terminal. For example, the remote terminal parses all discovery notification messages received within the timer time to determine which relay terminals are candidates and which relay modes are supported by the candidate relay terminals; and the remote terminal selects the optimal relay terminal from the candidate relay terminals as the relay terminal serving the remote terminal according to the priority ordering rule of the relay mode and the relay mode supported by the candidate relay terminal.
In the embodiment of the disclosure, the relay terminal selection process is optimized through the steps, so that the processing efficiency of relay terminal selection and the selection effect of the relay terminal can be improved, and the relay service performance and the user experience are improved.
Fig. 4 is a block diagram illustrating an apparatus for determining a relay terminal according to some embodiments of the present disclosure. As shown in fig. 4, an apparatus 400 for determining a relay terminal according to an embodiment of the present disclosure is provided at a remote terminal, and includes: a transmitting module 410, a receiving module 420, a determining module 430.
The sending module 410 is configured to send a discovery request message to the plurality of relay terminals in the first mode, where the discovery request message carries a plurality of relay mode identifiers.
In some embodiments, the sending module 410 sends a plurality of discovery request messages to a plurality of relay terminals, and each discovery request message carries a relay mode identifier. For example, the sending module 410 sends multiple discovery request messages simultaneously in a broadcast manner, and each discovery request message carries a relay manner identifier. By broadcasting a plurality of discovery request messages carrying different relay mode identifiers at the same time, the remote terminal can receive the discovery response message of the appropriate relay terminal more quickly, and the processing efficiency of the relay terminal selection flow is improved.
In other embodiments, the sending module 410 sends one discovery request message to a plurality of relay terminals, where the discovery request message carries a plurality of relay mode identifiers. For example, the sending module 410 sends one discovery request message in a broadcast manner, and the discovery request message carries multiple relay mode identifiers. By carrying multiple relay mode identifiers in one broadcasted discovery request message, the remote terminal can receive the discovery response message of the appropriate relay terminal more quickly, and the processing efficiency of the relay terminal selection flow is improved.
In some embodiments, the relay mode identification includes a relay service code (Relay Service Code, RSC for short).
The receiving module 420 is configured to receive a discovery response message transmitted by at least one of the plurality of relay terminals.
In some embodiments, the discovery response message includes an identification of the relay mode supported by the relay terminal.
The determining module 430 is configured to determine, based on the discovery response message, a relay terminal serving the remote terminal.
In some embodiments, the determination module 430 determines a relay terminal serving the remote terminal based on all discovery response messages received within a timer time. For example, assuming that the duration of the timer in the start and end time is t1, the determining module 430 determines a relay terminal serving the remote terminal according to all discovery response messages received in the duration of t 1. By setting the timer time, the time consumed by the remote terminal for waiting for the feedback information of the relay terminal can be reduced, and the processing efficiency of selecting the relay terminal by the remote terminal can be improved.
In some embodiments, the determining module 430 determines information of the candidate relay terminal according to all discovery response messages received within the timer time; the determining module 430 determines a relay terminal serving a remote terminal according to the relay terminal selection policy and information of the candidate relay terminal. Illustratively, the relay terminal selection policy includes a priority ordering rule of the relay mode, and the information of the candidate relay terminal includes an identification of the relay mode supported by the candidate relay terminal.
For example, the determining module 430 parses all discovery response messages received within the timer time to determine which relay terminals are candidates and which relay modes are supported by the relay terminals. The determining module 430 selects an optimal relay terminal from the candidate relay terminals as a relay terminal serving the remote terminal according to the priority ranking rule of the relay mode and the relay mode supported by the candidate relay terminal.
In the embodiment of the disclosure, the relay terminal selection process is optimized by the device, so that the processing efficiency of relay terminal selection and the selection effect of the relay terminal can be improved, and the relay service performance and the user experience are improved. Compared with the related art, the method has the advantages that the discovery request messages carrying the identifiers of different relay modes are sent at the same time, and when the discovery response messages are received, the relay terminals are selected by combining the strategies in a timer mode, so that the appropriate relay terminals can be selected more quickly.
Fig. 5 is a block diagram illustrating a remote terminal according to some embodiments of the present disclosure. As shown in fig. 5, the remote terminal 500 comprises means 510 for determining a relay terminal.
In some embodiments, the means 510 for determining a relay terminal is configured to send a discovery request message to a plurality of relay terminals in a first mode, where the discovery request message carries a plurality of relay mode identities; receiving a discovery response message transmitted by at least one of a plurality of relay terminals; and determining the relay terminal serving the remote terminal according to the discovery response message.
The remote terminal provided by the embodiment of the disclosure can improve the processing efficiency of relay terminal selection and the selection effect of the relay terminal, and improve the relay service performance and the user experience.
Fig. 6 is a schematic diagram illustrating a component architecture of a proximity services system in accordance with some embodiments of the present disclosure. As shown in fig. 6, a proximity service system 600 of an embodiment of the present disclosure includes: a remote terminal 610, and a plurality of relay terminals 620.
The remote terminal 610 is configured to send a discovery request message to the plurality of relay terminals 620 in the first mode, where the discovery request message carries a plurality of relay mode identities. For example, if the relay mode required by the remote terminal 610 is any one of the L2 relay mode, the relay mode that the L3 supports the non-3GPP interworking function, or the relay mode that the L3 does not support the non-3GPP interworking function, the following relay mode identifier is carried by the discovery request message: the identification of the L2 relay mode, the identification of the relay mode that L3 supports the non-3GPP interworking function, and the identification of the relay mode that L3 does not support the non-3GPP interworking function.
In some embodiments, the remote terminal 610 sends multiple discovery request messages to multiple relay terminals 620, and each discovery request message carries a relay mode identification. For example, the remote terminal 610 simultaneously transmits a plurality of discovery request messages in a broadcast manner, and each discovery request message carries a relay manner identifier. By broadcasting a plurality of discovery request messages carrying different relay mode identifiers at the same time, the remote terminal can receive the discovery response message of the appropriate relay terminal more quickly, and the processing efficiency of the relay terminal selection flow is improved.
In other embodiments, the remote terminal 610 sends a discovery request message to the plurality of relay terminals 620, and the discovery request message carries a plurality of relay mode identities. For example, the remote terminal sends a discovery request message in a broadcast manner, and the discovery request message carries multiple relay mode identifiers. By carrying multiple relay mode identifiers in one broadcasted discovery request message, the remote terminal can receive the discovery response message of the appropriate relay terminal more quickly, and the processing efficiency of the relay terminal selection flow is improved.
At least one of the plurality of relay terminals 620 is configured to transmit a discovery response message to the remote terminal 610.
The remote terminal 610 is further configured to determine a relay terminal serving the remote terminal based on the discovery response message.
In the embodiment of the disclosure, the processing efficiency of relay terminal selection and the selection effect of the relay terminal can be improved through the system, and the relay service performance and the user experience are improved.
Fig. 7 is a block diagram illustrating an apparatus for determining a relay terminal according to other embodiments of the present disclosure.
As shown in fig. 7, the apparatus 700 for determining a relay terminal includes a memory 710; and a processor 720 coupled to the memory 710. The memory 710 is used for storing instructions for performing corresponding embodiments of the method of determining a relay terminal. Processor 720 is configured to perform the method of determining a relay terminal in any of the embodiments of the present disclosure based on instructions stored in memory 710.
FIG. 8 is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure.
As shown in FIG. 8, computer system 800 may be in the form of a general purpose computing device. Computer system 800 includes a memory 810, a processor 820, and a bus 830 that connects the various system components.
Memory 810 may include, for example, system memory, non-volatile storage media, and the like. The system memory stores, for example, an operating system, application programs, boot Loader (Boot Loader), and other programs. The system memory may include volatile storage media, such as Random Access Memory (RAM) and/or cache memory. The non-volatile storage medium stores, for example, instructions for performing a corresponding embodiment of at least one of the methods of determining a relay terminal. Non-volatile storage media include, but are not limited to, disk storage, optical storage, flash memory, and the like.
Processor 820 may be implemented as discrete hardware components such as 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, discrete gates or transistors, and the like. Accordingly, each of the modules, such as the transmitting module, the receiving module, and the determining module, may be implemented by a Central Processing Unit (CPU) executing instructions for performing the corresponding steps in a memory, or may be implemented by dedicated circuitry for performing the corresponding steps.
Bus 830 may employ any of a variety of bus architectures. For example, bus structures include, but are not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MCA) bus, and a Peripheral Component Interconnect (PCI) bus.
Computer system 800 may also include an input-output interface 840, a network interface 850, a storage interface 860, and the like. These interfaces 840, 850, 860 may be connected between the memory 810 and the processor 820 via a bus 830. The input output interface 840 may provide a connection interface for input output devices such as a display, mouse, keyboard, etc. Network interface 850 provides a connection interface for various networking devices. The storage interface 860 provides a connection interface for external storage devices such as a floppy disk, a USB flash disk, an SD card, and the like.
Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable apparatus to produce a machine, such that the instructions, which execute via the processor, create means for implementing the functions specified in the flowchart and/or block diagram block or blocks.
These computer readable program instructions may also be stored in a computer readable memory that can direct a computer to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart and/or block diagram block or blocks.
The present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects.
By the method, the device and the system for determining the relay terminal in the embodiment, the appropriate relay terminal can be found for the remote terminal more quickly, so that the service performance and the user experience are improved.
Heretofore, a method, apparatus and system for determining a relay terminal according to the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
Claims (20)
1. A method of determining a relay terminal, for use in a remote terminal, comprising:
in a first mode, a discovery request message is sent to a plurality of relay terminals, wherein the discovery request message carries a plurality of relay mode identifiers;
receiving a discovery response message sent by at least one of the plurality of relay terminals;
and determining the relay terminal serving the remote terminal according to the discovery response message.
2. The method for determining a relay terminal according to claim 1, wherein the transmitting the discovery request message to the plurality of relay terminals comprises:
and sending a plurality of discovery request messages to a plurality of relay terminals, wherein each of the plurality of discovery request messages carries a relay mode identifier.
3. The method of determining a relay terminal according to claim 2, wherein a plurality of discovery request messages are simultaneously transmitted to a plurality of relay terminals in a broadcast manner.
4. A method of determining a relay terminal according to any of claims 1 to 3, wherein the relay mode identity comprises a relay service code.
5. The method of determining a relay terminal according to claim 1, wherein determining a relay terminal serving the remote terminal according to the discovery response message comprises:
and determining the relay terminal serving the remote terminal according to all the discovery response messages received in the timer.
6. The method of determining a relay terminal according to claim 5, wherein determining a relay terminal serving the remote terminal based on all discovery response messages received within a timer time comprises:
determining information of candidate relay terminals according to all discovery response messages received in the timer time;
and determining the relay terminal serving the remote terminal according to the relay terminal selection strategy and the information of the candidate relay terminal.
7. The method of determining a relay terminal according to claim 6, wherein determining a relay terminal serving the remote terminal according to a relay terminal selection policy and information of the candidate relay terminal comprises:
and under the condition that the to-be-relayed services of the remote terminal are multiple, determining the to-be-relayed services as the relay terminal according to the relay terminal selection strategy and the information of the candidate relay terminal.
8. The method of determining a relay terminal according to claim 1, wherein,
the method for determining the relay terminal is executed under the condition that the relay terminal reselection triggering condition is met.
9. The method for determining a relay terminal according to claim 8, wherein the relay terminal reselection trigger condition comprises:
the communication signal strength of the relay terminal currently serving the remote terminal is below a threshold.
10. The method for determining a relay terminal according to claim 6, further comprising:
sending a relay reselection request to a proximity service application server;
receiving a relay reselection rule from the proximity service application server;
and determining the relay terminal selection strategy according to the relay reselection rule.
11. The method for determining a relay terminal according to any one of claims 6 to 10, wherein the relay terminal selection policy includes: priority order rules of the relay scheme.
12. The method of determining a relay terminal according to claim 1, further comprising:
in a second mode, receiving a discovery notification message sent by a relay terminal, wherein the discovery notification message carries a relay mode supported by the relay terminal;
and determining a relay terminal serving the remote terminal according to the discovery notification message.
13. The method for determining a relay terminal according to claim 12, wherein the receiving the discovery notification message sent by the relay terminal comprises:
and receiving a plurality of discovery notification messages sent by the relay terminal under the condition that the relay terminal supports a plurality of relay modes, wherein each of the plurality of discovery notification messages carries one relay mode supported by the relay terminal.
14. The method of determining a relay terminal according to claim 12, wherein determining a relay terminal serving the remote terminal according to the discovery notification message comprises:
determining information of candidate relay terminals according to all discovery notification messages received in the timer time;
and determining the relay terminal serving the remote terminal according to the relay terminal selection strategy and the information of the candidate relay terminal.
15. The method of determining a relay terminal according to claim 1, wherein the discovery request message is a 5G proximity service terminal-to-network relay discovery request message and the discovery response message is a 5G proximity service terminal-to-network relay discovery response message.
16. An apparatus for determining a relay terminal, disposed at a remote terminal, comprising:
the sending module is configured to send a discovery request message to a plurality of relay terminals in a first mode, wherein the discovery request message carries a plurality of relay mode identifiers;
a receiving module configured to receive a discovery response message transmitted by at least one of the plurality of relay terminals;
and the determining module is configured to determine a relay terminal serving the remote terminal according to the discovery response message.
17. An apparatus for determining a relay terminal, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the method of determining a relay terminal according to any of claims 1 to 15 based on instructions stored in the memory.
18. A computer-readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of determining a relay terminal according to any of claims 1 to 15.
19. A remote terminal, comprising:
an apparatus for determining a relay terminal according to claim 16 or 17.
20. A proximity services system, comprising:
the remote terminal is configured to send a discovery request message to a plurality of relay terminals in a first mode, wherein the discovery request message carries a plurality of relay mode identifiers;
at least one of the plurality of relay terminals configured to transmit a discovery response message to the remote terminal;
the remote terminal is further configured to determine a relay terminal serving the remote terminal based on the discovery response message.
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| CN202210847307.XA CN117460019A (en) | 2022-07-19 | 2022-07-19 | Method, device and system for determining relay terminal |
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| CN202210847307.XA CN117460019A (en) | 2022-07-19 | 2022-07-19 | Method, device and system for determining relay terminal |
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