CN115226164A - Relay communication method and device - Google Patents

Relay communication method and device Download PDF

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Publication number
CN115226164A
CN115226164A CN202110428551.8A CN202110428551A CN115226164A CN 115226164 A CN115226164 A CN 115226164A CN 202110428551 A CN202110428551 A CN 202110428551A CN 115226164 A CN115226164 A CN 115226164A
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qos
network element
parameter set
parameters
user equipment
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CN202110428551.8A
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许胜锋
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN202110428551.8A priority Critical patent/CN115226164A/en
Priority to PCT/CN2022/085260 priority patent/WO2022222748A1/en
Publication of CN115226164A publication Critical patent/CN115226164A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The application provides a relay communication method and a device, wherein the communication method comprises the following steps: a first network element acquires the QoS requirement of a data stream of remote user equipment; the first network element generates a first candidate parameter set for the data stream according to the QoS requirement of the data stream and sends the first candidate parameter set to a second network element; the second network element sends an alternative QoS configuration file to the RAN according to the first alternative parameter set, and the alternative QoS configuration file is used for the RAN node to select a matching alternative QoS configuration file which meets the requirement of data stream transmission between the current relay user equipment and the user plane network element; and the second network element determines the PC5QoS parameter of the PC5 link according to the matched alternative QoS configuration file, so that the QoS parameter adjustment of the PC5 link is realized, and the end-to-end QoS requirement of the remote user equipment is guaranteed.

Description

Relay communication method and device
Technical Field
The present application relates to the field of communications, and more particularly, to a relay communication method and apparatus.
Background
In a fifth generation (5generation, 5g) mobile communication system, device-to-Device (D2D) communication allows direct communication between User Equipments (UEs), and when a UE is out of network coverage or has a poor communication signal with AN Access Network (AN)/Radio Access Network (RAN), a Remote User Equipment (Remote UE) may perform auxiliary transmission through a Relay User Equipment (Relay UE). For example, communication between the Remote UE and the Relay UE and communication between the Relay UE and the network side server are achieved.
Currently, D2D Communication may support relaying, that is, a Remote UE may implement uplink and downlink transmission of data through a Proximity-based Services Communication (pc5) link between the Remote UE and the Relay UE and a Protocol Data Unit (PDU) session of the Remote UE.
How to guarantee the end-to-end QoS requirement of Remote UE in the relay scenario becomes an urgent problem to be solved in the industry.
Disclosure of Invention
The application provides a relay communication method and a relay communication device, which can guarantee end-to-end QoS requirements of Remote UE.
In a first aspect, a relay communication method is provided, and includes: a first network element acquires the QoS requirement of a data stream of remote user equipment; the first network element sends a first candidate parameter set to a second network element according to the QoS requirement of the data stream, wherein the first candidate parameter set is used for determining a target QoS parameter set, and QoS parameters in the target QoS parameter set are used for transmitting the data stream between the relay user equipment and the user plane function network element.
According to the Relay communication method provided by the application, a first network element, for example, a PCF network element, may generate a first candidate parameter set for a far-end user equipment data stream according to a QoS requirement of the data stream acquired from an AF network element, so that a RAN node selects a matching candidate QoS configuration file that satisfies a requirement for transmitting the data stream between a current Relay user equipment and a user plane network element, and further, a second network element, for example, an SMF network element or a Relay user equipment, determines a PC5QoS parameter of a PC5 link according to the matching candidate QoS configuration file, thereby achieving adjustment of QoS configuration of the PC5 link and Relay UE PDU session, and guaranteeing end-to-end QoS requirements of the far-end user equipment.
In a possible implementation, the first network element obtains identification information of the remote user equipment and data flow information, and stores the identification information of the remote user equipment and the data flow information.
In a possible implementation manner, the first network element determines that the requested service data flow is a data flow of the remote user equipment according to the stored identification information of the remote user equipment, the data flow information, and the obtained QoS requirement of the data flow of the remote user equipment.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the first set of alternative parameters includes at least one set of QoS parameters.
According to the technical scheme, the first alternative parameter set comprises a plurality of QoS parameter sets, so that a plurality of alternative QoS configuration files can be generated, RAN can select and match the alternative QoS configuration files conveniently, and then the SMF network element or the Relay user equipment determines PC5QoS parameters updated by the PC5 link according to the matched alternative QoS configuration files, qoS configuration of the PC5 link and Relay UE PDU session is adjusted, and end-to-end QoS requirements of remote user equipment are guaranteed.
For example, the QoS requirement of the data stream of the remote user equipment acquired by the first network element is (x, y, z), where x, y, and z are three different QoS parameters, and x, y, and z are greater than or equal to 0. The first network element may generate a different set of QoS parameters, e.g., (x 1, y1, z 1), (x 2, y2, z 2), (x 3, y3, z 3) …, depending on the QoS requirements. Wherein, x1, x2, x3 are three QoS parameters meeting the requirement of the parameter x, y1, y2, y3 are three QoS parameters meeting the requirement of the parameter y, and z1, z2, z3 are three QoS parameters meeting the requirement of the parameter z.
For another example, in the QoS requirements of the data stream of the remote user equipment acquired by the first network element, x is a delay parameter, and the delay parameter requirement is 10ms, the first network element may generate different sets of QoS parameters according to the delay requirement, for example, the delay parameters may be 6ms,7ms,8ms, x1, x2, and x3, respectively, 6ms,7ms, and 8ms, that is, three sets of QoS parameters may be generated, and the delay parameters in the three sets of QoS parameters are 6ms,7ms, and 8ms, respectively.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the first network element sends a second candidate parameter set to the second network element according to the QoS requirement of the data stream; or, the first network element sends a second candidate parameter set to the second network element according to the first candidate parameter set; wherein the second set of alternative parameters is used to determine a set of target proximity services communication, PC5, qoS parameters of the set of target PC5QoS parameters, PC5QoS parameters of which are used to transmit the data stream between the relaying user equipment and the far-end user equipment.
According to the technical scheme, the first network element can also send a second candidate parameter set, and then the second network element selects a target PC5QoS parameter set according to the second candidate parameter set, and then determines the PC5QoS parameters updated by the PC5 link according to the matched candidate QoS configuration file. And the QoS configuration of the PC5 link and the Relay UE PDU session is adjusted, and the end-to-end QoS requirement of the remote user equipment is ensured.
In a possible embodiment, the first network element generates a first set of alternative parameters, wherein the QoS parameters are used for transmitting the data stream between the relaying user equipment and the user plane function network element, and the first network element may further generate a second set of alternative parameters, wherein the PC5QoS parameters are used for transmitting the data stream between the relaying user equipment and the remote user equipment.
In a possible implementation manner, the first network element may generate the second candidate parameter set according to the QoS requirement of the data flow, or may determine the second candidate parameter set according to the generated first candidate parameter set.
For example, the QoS requirement of the data stream of the remote user equipment acquired by the first network element is (x, y, z), where x, y, and z are three different QoS parameters, and x, y, and z are greater than or equal to 0. The first network element may generate a different set of QoS parameters (first set of parameters) according to the QoS requirements, e.g., (x 1, y1, z 1), (x 2, y2, z 2), (x 3, y3, z 3) …. Wherein, x1, x2 and x3 are three QoS parameters meeting the requirement of the parameter x, y1, y2 and y3 are three QoS parameters meeting the requirement of the parameter y, and z1, z2 and z3 are three QoS parameters meeting the requirement of the parameter z; the first network element may generate different sets of PC5QoS parameters, e.g., (x 1', y1', z1 '), (x 2', y2', z2 '), (x 3', y3', z3 ') …, according to the QoS requirement or the first set of alternative parameters. Wherein, x1' and x1 are respectively used as the QoS parameter of the PC5 link and the QoS parameter of the PDU session, and the requirement of the parameter x should be satisfied, and y1' and y1, and z1' and z1 are the same.
For another example, in the QoS requirements of the data stream of the remote user equipment obtained by the first network element, x is a delay parameter, and the delay parameter requirement is 10ms, the first network element may generate different QoS parameter sets according to the delay requirement, for example, the delay parameters may be 6ms,7ms,8ms, x1, x2, and x3, respectively, 6ms,7ms, and 8ms, that is, three QoS parameter sets may be generated, where the delay parameters in the three QoS parameter sets are 6ms,7ms, and 8ms, respectively; the first network element may generate different PC5QoS parameter sets according to the QoS requirement or the first candidate parameter set, for example, the delay parameters may be 4ms,3ms,2ms, x1', x2', and x3' are 4ms,3ms, and 2ms, that is, three PC5QoS parameter sets may be generated, where the delay parameters in the three PC5QoS parameter sets are 4ms,3ms, and 2ms, respectively.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the second set of alternative parameters comprises at least one set of PC5QoS parameters.
According to the technical scheme, the second alternative parameter set comprises a plurality of PC5QoS parameter sets and is used for determining a target PC5QoS parameter set, further determining updated PC5QoS parameters of a PC5 link by combining the target PC5QoS parameter set and a matched alternative QoS configuration file, realizing the adjustment of QoS configuration of the PC5 link and Relay UE PDU session, and guaranteeing the end-to-end QoS requirement of remote user equipment.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the first network element sends the corresponding relation between the first QoS parameter set and the second QoS parameter set to the second network element, or the first network element sends the corresponding relation between the QoS parameters in the first QoS parameter set and the QoS parameters in the second QoS parameter set to the second network element; the first set of QoS parameters belongs to the first set of candidate parameters and the second set of QoS parameters belongs to the second set of candidate parameters.
According to the technical scheme, the first network element sends the corresponding relation between the first QoS parameter set and the second QoS parameter set or the corresponding relation between the QoS parameters in the two parameter sets, and then the second network element determines the updated PC5QoS parameter of the PC5 link according to the corresponding relation and the matched alternative QoS configuration file, so that the adjustment of the QoS parameter of the PC5 link is realized, and the end-to-end QoS requirement of the remote user equipment is guaranteed.
In a possible implementation manner, the first network element selects one parameter set in the first candidate parameter set as a first QoS parameter set, the first network element selects one parameter set corresponding to the first QoS parameter set in the second candidate parameter set as a second QoS parameter set, and sends the first QoS parameter set and the second QoS parameter set; or the first network element sends the QoS parameters in the first QoS parameter set and the PC5QoS parameters corresponding to the QoS parameters in the second QoS parameter set.
For example, the first set of candidate parameters includes: (x 1, y1, z 1), (x 2, y2, z 2), (x 3, y3, z 3) …, the second set of candidate parameters comprising: (x 1', y1', z1 '), (x 2', y2', z2 '), (x 3', y3', z3 ') …. Then, the first network element may send the first set of QoS parameters (x 1, y1, z 1) and the second set of QoS parameters (x 1', y1', z1 ') to the second network element. It should be noted that x1 and x1' are corresponding QoS parameters, where the correspondence here means that x1 is a QoS parameter for transmitting a data stream between the relay user equipment and the user plane functional network element, x1' is a PC5QoS parameter for transmitting a data stream between the remote user equipment and the relay user equipment, and x1' satisfy the QoS requirement of the data stream.
For another example, the first network element may send the correspondence between x1 and x1' to the second network element.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the first network element determines the first candidate parameter set according to the QoS requirement of the data flow.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the first network element determines the first candidate parameter set according to the QoS requirement of the data flow and the identification information of the remote user equipment.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the first network element determines the first candidate parameter set according to the QoS requirement of the data stream and the subscription information of the remote user equipment; or the first network element determines the first candidate parameter set according to the QoS requirement of the data stream and the subscription information of the relay user equipment; or the first network element determines the first candidate parameter set according to the QoS requirement of the data stream, the subscription information of the remote user equipment, and the subscription information of the relay user equipment.
According to the technical scheme, the first network element determines the first candidate parameter set according to the QoS requirement of the data stream and the subscription information of the remote user equipment or the relay user equipment, which means that possible QoS parameters for the relay user equipment and the user plane to transmit the data stream are determined according to the QoS requirement of the data stream and the QoS parameters included in the subscription information, and the subscription information of the remote user equipment and the relay user equipment is combined to help further meet the QoS requirement for the user equipment to transmit the data stream.
For example, the QoS requirement of the data stream of the remote user equipment acquired by the first network element is (x, y, z), where x, y, and z are three different QoS parameters, and x, y, and z are greater than or equal to 0. The subscription information of the remote user equipment includes QoS parameters x2, x3, and x5, and the first network element may generate a first candidate parameter set according to the QoS requirement and the subscription information: (x 2, y2, z 2), (x 3, y3, z 3), (x 5, y5, z 5).
With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the first network element is a policy control function network element or a unified data management function network element, and the second network element is a session management function network element.
In a second aspect, a relay communication method is provided, and includes: the second network element receives a first alternative parameter set from the first network element, wherein the first alternative parameter set is used for determining a target QoS parameter set, and QoS parameters in the target QoS parameter set are used for transmitting data streams of remote user equipment between the relay user equipment and the user plane function network element; the second network element sends an alternative QoS configuration file to a Radio Access Network (RAN) node according to the first alternative parameter set, wherein the alternative QoS configuration file is used for the RAN node to determine and match the alternative QoS configuration file; the second network element receives a matching alternative QoS configuration file from the RAN node, wherein the matching alternative QoS configuration file is a QoS configuration file met by the RAN node, and the matching alternative QoS configuration file belongs to the alternative QoS configuration file; and the second network element sends a PC5QoS parameter to the relay user equipment according to the matched alternative QoS configuration file, wherein the PC5QoS parameter is used for transmitting the data stream between the relay user equipment and the remote user equipment.
According to the relay communication method provided by the application, the second network element receives the first alternative parameter set, determines an alternative QoS configuration file and sends the alternative QoS configuration file to the RAN, the RAN selects a matched alternative QoS configuration file, the second network element determines a PC5QoS parameter for transmitting the data stream between the relay user equipment and the far-end user equipment according to the matched alternative QoS configuration file, further adjustment of the PC5 link configuration parameter is achieved, and end-to-end QoS requirements of the far-end user equipment are guaranteed.
In a possible implementation manner, the second network element may generate multiple QoS profiles for the data stream according to the first candidate parameter set and send the QoS profiles to the RAN node, the RAN node selects a matching candidate QoS profile that meets the current transmission requirement according to the QoS requirement that the current QoS stream meets, associates the matching candidate QoS profile, and sends the matching candidate QoS profile to the second network element, and the second network element may determine the PC5QoS parameter according to the matching candidate QoS profile.
With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the second network element determines the PC5QoS parameter according to the matched alternative QoS configuration file; the second network element sends the PC5QoS parameter to the relay user equipment.
According to the technical scheme, the second network element determines the PC5QoS parameter according to the matched alternative QoS configuration file sent by the RAN and sends the parameter to the relay user equipment. The method is used for the relay user equipment to inform the remote user equipment to adjust the PC5QoS parameters of the PC5 link, and the end-to-end QoS requirement of the remote user equipment is guaranteed.
With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the second network element receives a second alternative parameter set from the first network element, wherein the second alternative parameter set comprises at least one PC5QoS parameter set; and the second network element determines a target PC5QoS parameter set according to the second candidate parameter set and the matched candidate QoS configuration file, wherein the target PC5QoS parameter set comprises the PC5QoS parameters.
According to the technical scheme, the second network element may receive a second candidate parameter set, may determine a target PC5QoS parameter set according to the second candidate parameter set and the matching candidate QoS configuration file, and further may determine a PC5QoS parameter according to the target PC5QoS parameter set, so that the relay user equipment notifies the remote user equipment to adjust the PC5QoS parameter of the PC5 link, thereby ensuring the end-to-end QoS requirement of the remote user equipment.
For example, the first set of alternative parameters received by the second network element includes: (x 1, y1, z 1), (x 2, y2, z 2), (x 3, y3, z 3), the second set of candidate parameters comprising: (x 1', y1', z1 '), (x 2', y2', z 2'), (x 3', y3', z3 '), the second network element determines from the matching alternative QoS profile a target PC5QoS parameter set as (x 1', y1', z 1') and further determines from the target PC5QoS parameter set a PC5QoS parameter.
With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the second network element receives a corresponding relationship between a first QoS parameter set and a second QoS parameter set from the first network element, or the second network element receives a corresponding relationship between QoS parameters in the first QoS parameter set and QoS parameters in the second QoS parameter set from the first network element, the first QoS parameter set belongs to the first candidate parameter set, and the second QoS parameter set belongs to the second candidate parameter set; and the second network element determines the PC5QoS parameter according to the corresponding relation and the matched alternative QoS configuration file.
According to the technical scheme, the second network element receives the corresponding relation between the first QoS parameter set and the second QoS parameter set or the corresponding relation between the QoS parameters in the two parameter sets, and then the second network element determines the PC5QoS parameters of the PC5 link according to the corresponding relation and the matched alternative QoS configuration file, so that the adjustment of the PC5 link QoS parameters is realized, and the end-to-end QoS requirements of the remote user equipment are guaranteed.
For example, the correspondence relationship between the first parameter set and the second parameter set received by the second network element is: (x 1, y1, z 1) corresponds to (x 1', y1', z1 '), or the corresponding relationship between receiving the QoS parameters of the first set of parameters and the QoS parameters of the second set of parameters is: x1 corresponds to x1'. And further the second network element determines the PC5QoS parameter according to the corresponding relation and the matched alternative QoS configuration file.
With reference to the second aspect, in certain implementations of the second aspect, the method further includes: if the relay user equipment is pre-configured or network authorization is configured with the corresponding relation between the QoS parameters in the first QoS parameter set and the PC5QoS parameters in the second QoS parameter set, the relay user equipment determines the PC5QoS parameters according to the corresponding relation, and the corresponding relation can be the corresponding relation between 5QI and PQI.
With reference to the second aspect, in some implementation manners of the second aspect, the first network element is a policy control function network element or a unified data management function network element, and the second network element is a session management function network element.
In a third aspect, a relay communication method is provided, and includes: a first network element acquires the QoS requirement of a data stream of remote user equipment; the first network element sends a corresponding relation to a second network element according to the QoS requirement of the data stream; the corresponding relationship at least comprises a first corresponding relationship and a second corresponding relationship, the first corresponding relationship comprises a corresponding relationship between a first QoS parameter and a second QoS parameter, and the second corresponding relationship comprises a corresponding relationship between a third QoS parameter and a fourth QoS parameter; wherein the first QoS parameter and the third QoS parameter are used for transmitting the data flow between a relaying user equipment and the far-end user equipment, the second QoS parameter and the fourth QoS parameter are used for transmitting the data flow between the relaying user equipment and a user plane function network element, and the second QoS parameter is different from the fourth QoS parameter.
In one possible embodiment, the corresponding relationship refers to the corresponding relationship between the PC5QoS parameter and the QoS parameter corresponding to the PDU session of the Relay UE.
According to the relay communication method provided by the application, a first network element can generate a plurality of sets of QoS parameter corresponding relations for a data stream of a remote user equipment according to QoS requirements of the data stream, wherein the QoS parameter corresponding relations refer to the correspondence between QoS parameters used for transmitting the data stream between the relay user equipment and the remote user equipment and QoS parameters used for transmitting the data stream between the relay user equipment and a user plane functional network element, the QoS parameters are used for a RAN node to select a current matching alternative QoS configuration file, and further an SMF network element or the relay user equipment determines the PC5QoS parameters of a PC5 link according to the matching alternative QoS configuration file, so that the QoS configuration of the PC5 link is adjusted, and the end-to-end QoS requirements of the remote user equipment are guaranteed.
For example, the QoS requirement of the data stream of the remote user equipment obtained by the first network element is (x, y, z), where x, y, and z are three different QoS parameters, and x, y, and z are greater than or equal to 0. The first network element may generate different correspondences according to the QoS requirement, for example, the first correspondence is a correspondence between x1 and x1', and the second correspondence is a correspondence between x2 and x 2'. Where x1, x2, x1', x2' are three QoS parameters that satisfy the requirement of the parameter x, where it should be understood that x1 and x1 'are a first QoS parameter and a third QoS parameter, respectively, for transmitting the data stream between the relaying user equipment and the remote user equipment, and x2' are a second QoS parameter and a fourth QoS parameter, respectively, for transmitting the data stream between the relaying user equipment and the user plane function network element.
It should be noted that the second network element generates QoS parameters corresponding to PDU sessions of two different sets of Relay UEs according to QoS requirements, that is, the second QoS parameter is different from the fourth QoS parameter.
With reference to the third aspect, in certain implementations of the third aspect, the method further includes: the first network element sends indication information to the second network element according to the QoS requirement of the data stream; the indication information is used for indicating to generate an alternative QoS configuration file, where the alternative QoS configuration file is used for the RAN node to determine a matching alternative QoS configuration file, and the matching alternative QoS configuration file is a QoS configuration file that is satisfied by the RAN node.
According to the technical scheme, the first network element generates indication information for indicating the second network element to generate an alternative QoS configuration file, so that the indication information is used for determining a matching alternative QoS configuration file meeting the transmission data flow between the current relay user equipment and the user plane network element by the RAN node, the indication information ensures that the second network element generates the matching alternative QoS configuration file, preconditions are provided for subsequently determining the PC5QoS parameter of the PC5 link, qoS configuration of the PC5 link is adjusted, and the end-to-end QoS requirement of the remote user equipment is guaranteed.
With reference to the third aspect, in certain implementations of the third aspect, the method further includes: and the first network element determines the corresponding relation according to the QoS (quality of service) requirement of the data stream.
With reference to the third aspect, in certain implementations of the third aspect, the method further includes: the first network element determines a corresponding relationship according to the QoS requirement of the data stream and the identification information of the remote user equipment.
With reference to the third aspect, in certain implementations of the third aspect, the method further includes: the first network element determines the corresponding relation according to the QoS requirement of the data stream and the subscription information of the remote user equipment; or the first network element determines the corresponding relationship according to the QoS requirement of the data stream and the subscription information of the relay user equipment; or the first network element determines the corresponding relationship according to the QoS requirement of the data stream, the subscription information of the remote user equipment, and the subscription information of the relay user equipment.
According to the technical scheme, the first network element determines multiple groups of corresponding relations according to the QoS requirement of the data stream and the subscription information of the remote user equipment or the Relay user equipment, which means that the possible corresponding relation between the PC5QoS parameter and the QoS parameter corresponding to the PDU session of the Relay UE is determined according to the QoS requirement of the data stream and the QoS parameter included in the subscription information, and the subscription information of the remote user equipment and the Relay user equipment is combined to help further meet the QoS requirement of the user equipment for transmitting the data stream.
For example, the QoS requirement of the data stream of the remote user equipment acquired by the first network element is (x, y, z), where x, y, and z are three different QoS parameters, and x, y, and z are greater than or equal to 0. The subscription information of the remote user equipment includes QoS parameters x3, x5, and the first network element may generate a corresponding relationship according to the QoS requirement and the subscription information: x3 and x3', x5 and x5'.
With reference to the third aspect, in certain implementations of the third aspect, the method further includes: the first network element is a policy control function network element or a unified data management function network element, and the second network element is a session management function network element.
In a fourth aspect, a relay communication method is provided, and includes: the second network element receives the corresponding relation from the first network element; the second network element sends a fifth QoS parameter to the relay user equipment according to the corresponding relation and a sixth QoS parameter, wherein the sixth QoS parameter is a QoS parameter which is satisfied by a link between the relay user equipment and a user plane function network element; the corresponding relationship at least comprises a first corresponding relationship and a second corresponding relationship, the first corresponding relationship comprises a corresponding relationship between a first QoS parameter and a second QoS parameter, and the second corresponding relationship comprises a corresponding relationship between a third QoS parameter and a fourth QoS parameter; the first QoS parameter and the third QoS parameter are used for transmitting a data flow of the remote user equipment between the relay user equipment and the remote user equipment, the second QoS parameter and the fourth QoS parameter are used for transmitting the data flow between the relay user equipment and a user plane function network element, and the second QoS parameter is different from the fourth QoS parameter.
According to the relay communication method provided by the application, the second network element receives at least two groups of corresponding relations, determines an alternative QoS configuration file according to the corresponding relation and sends the alternative QoS configuration file to the RAN, the RAN selects and matches the alternative QoS configuration file, the second network element determines a sixth QoS parameter for transmitting data streams between the relay user equipment and the user plane network element according to the matched alternative QoS configuration file, further determines a fifth QoS parameter (PC 5QoS parameter) for transmitting the data streams between the remote user equipment according to the sixth QoS parameter and the corresponding relation, further realizes PC5 link configuration parameter adjustment, and guarantees end-to-end QoS requirements of the remote user equipment.
With reference to the fourth aspect, in certain implementations of the fourth aspect, the method further includes: the second network element determines the fifth QoS parameter according to the sixth QoS parameter and the corresponding relationship; the second network element sends the fifth QoS parameter to the relaying user equipment.
According to the technical scheme, the second network element can determine the corresponding PC5QoS parameter according to the PDU session parameter and the corresponding relation of the Relay UE, and the second network element sends the PC5QoS parameter to the Relay user equipment, so that the Relay user equipment indicates the remote user equipment to realize PC5 link configuration parameter adjustment, and the end-to-end QoS requirement of the remote user equipment is guaranteed.
For example, the correspondence received by the second network element is: the first correspondence is the correspondence of x1 and x1', and the second correspondence is the correspondence of x2 and x 2'. Where x1, x2, x1', x2' are four QoS parameters that satisfy the requirement of the parameter x, where it should be understood that x1 and x1 'are a first QoS parameter and a third QoS parameter, respectively, for transmitting the data stream between the relaying user equipment and the remote user equipment, and x2' are a second QoS parameter and a fourth QoS parameter, respectively, for transmitting the data stream between the relaying user equipment and the user plane function network element. The second network element can generate an alternative QoS configuration file according to x1 'and x2', the RAN node determines a matching alternative QoS configuration file which meets the requirement of data stream transmission between the current relay user equipment and the user plane network element, determines a sixth QoS parameter x3 'used for transmission between the relay user equipment and the user plane network element according to the matching alternative QoS configuration file, and determines a fifth QoS parameter x3 corresponding to the sixth QoS parameter x3' according to the first corresponding relation and the second corresponding relation.
The QoS requirement of the data stream of the remote user equipment, acquired by the first network element, is (x, y, z), where x, y, and z are three different QoS parameters, respectively, and x, y, and z are greater than or equal to 0. The first network element may generate different correspondences according to the QoS requirement, for example, the first correspondence is a correspondence between x1 and x1', and the second correspondence is a correspondence between x2 and x 2'. Where x1, x2, x1', x2' are three QoS parameters that satisfy the requirement of the parameter x, where it should be understood that x1 and x1 'are a first QoS parameter and a third QoS parameter, respectively, for transmitting the data stream between the relaying user equipment and the remote user equipment, and x2' are a second QoS parameter and a fourth QoS parameter, respectively, for transmitting the data stream between the relaying user equipment and the user plane function network element.
It should be noted that the second network element generates two different sets of QoS parameters corresponding to PDU sessions of Relay UEs according to the QoS requirements, that is, the second QoS parameter is different from the fourth QoS parameter.
With reference to the fourth aspect, in certain implementations of the fourth aspect, the method further includes: the second network element receives a matching alternative QoS configuration file from a RAN node, wherein the matching alternative QoS configuration file is a QoS configuration file met by the RAN node; and the second network element determines the sixth QoS parameter according to the matched alternative QoS configuration file.
According to the technical scheme, the second network element receives a matching alternative QoS configuration file which meets the requirement of data stream transmission between the current relay user equipment and the user plane network element from the RAN node, and the second network element further determines QoS parameters for the relay user equipment to transmit between the user plane network element according to the matching alternative QoS configuration file.
With reference to the fourth aspect, in certain implementations of the fourth aspect, the method further includes: and the second network element sends an alternative QoS configuration file to the RAN node according to the corresponding relation, wherein the alternative QoS configuration file is used for the RAN node to determine and match the alternative QoS configuration file.
According to the technical scheme, the second network element generates an alternative QoS configuration file according to the corresponding relation and sends the alternative QoS configuration file to the RAN node, and the alternative QoS configuration file is used for the RAN node to determine the matching alternative QoS configuration file which meets the requirement of the transmission data flow between the current relay user equipment and the user plane network element.
With reference to the fourth aspect, in certain implementations of the fourth aspect, the method further includes: the second network element generates the alternative QoS configuration file according to the second QoS parameter and the fourth QoS parameter; the second network element sends the alternative QoS profile to the RAN node.
According to the technical scheme, the second network element generates a corresponding relation according to QoS parameters used for transmitting data streams between the relay user equipment and the user plane network element in the corresponding relation, generates an alternative QoS configuration file and sends the alternative QoS configuration file to the RAN node, and the alternative QoS configuration file is used for the RAN node to determine that the alternative QoS configuration file meets the requirement of the transmission data streams between the current relay user equipment and the user plane network element.
With reference to the fourth aspect, in certain implementations of the fourth aspect, the method further includes: the second network element receives indication information from the first network element, wherein the indication information is used for indicating generation of an alternative QoS configuration file; the second network element generates the alternative QoS configuration file according to the second QoS parameter and the fourth QoS parameter, including: and the second network element generates the alternative QoS configuration file according to the indication information, the second QoS parameter and the fourth QoS parameter.
According to the technical scheme, the second network element generates an alternative QoS configuration file according to the indication information, and the alternative QoS configuration file is used for the RAN node to determine the matching alternative QoS configuration file which meets the requirement of the transmission data flow between the current relay user equipment and the user plane network element.
With reference to the fourth aspect, in certain implementations of the fourth aspect, the method further includes: the first network element is a policy control function network element or a unified data management function network element, and the second network element is a session management function network element.
In a fifth aspect, there is provided a relay communication device performing the elements of the method of the first aspect or its various embodiments.
Based on the above solution, the Relay communication device determines the PC5QoS parameter of the PC5 link by matching the alternative QoS configuration file by executing the method in the first aspect or the various embodiments thereof, thereby implementing adjustment of QoS configuration of the PC5 link and the Relay UE PDU session, and ensuring end-to-end QoS requirements of the remote user equipment.
In a sixth aspect, there is provided a relay communication device performing the elements of the method of the second aspect or its various embodiments.
Based on the above solution, the Relay communication device determines the PC5QoS parameter of the PC5 link by matching the candidate QoS configuration file by executing the method in the second aspect or the various embodiments thereof, thereby implementing adjustment of QoS configuration of the PC5 link and the Relay UE PDU session, and guaranteeing end-to-end QoS requirements of the remote user equipment.
In a seventh aspect, there is provided a relay communication device that performs the elements of the method of the third aspect or its various embodiments.
Based on the above solution, the Relay communication device determines the PC5QoS parameter of the PC5 link by matching the candidate QoS configuration file by executing the method in the third aspect or the various embodiments thereof, thereby implementing adjustment of QoS configuration of the PC5 link and the Relay UE PDU session, and ensuring end-to-end QoS requirements of the remote user equipment.
In an eighth aspect, there is provided a relay communication device that performs the elements of the method of the fourth aspect or its various embodiments.
Based on the above solution, the Relay communication device determines the PC5QoS parameter of the PC5 link by matching the alternative QoS configuration file by executing the method in the fourth aspect or various embodiments thereof, thereby implementing adjustment of QoS configuration of the PC5 link and the Relay UE PDU session, and ensuring end-to-end QoS requirements of the remote user equipment.
A ninth aspect provides a relay communication device comprising a memory for storing computer instructions, and a processor for executing the computer instructions stored in the memory, so that the relay communication device executes the relay communication method in the first or second aspect or the third or fourth aspect and various possible implementations thereof.
Based on the technical scheme, the Relay communication device determines the PC5QoS parameter of the PC5 link by matching the alternative QoS configuration file by executing the method in the embodiment, so that the QoS configuration of the PC5 link and the Relay UE PDU session is adjusted, and the end-to-end QoS requirement of the remote user equipment is guaranteed.
Optionally, the number of the processors is one or more, and the number of the memories is one or more.
Alternatively, the memory may be integral to the processor or provided separately from the processor.
In a tenth aspect, a relay communication apparatus is provided, which includes one of the first network element, the second network element, the remote user equipment, and the relay user equipment.
In an eleventh aspect, a computer-readable medium is provided, which stores a computer program (which may also be referred to as code or instructions) that, when executed on a computer, causes the computer to perform the method of any one of the possible implementations of the first, second, third and fourth aspects described above.
In a twelfth aspect, there is provided a computer program product comprising: a computer program (which may also be referred to as code, or instructions), which when executed, causes the method of any one of the possible implementations of the first or second aspect or the third or fourth aspect described above to be performed.
Drawings
Fig. 1 shows a schematic diagram of a relay communication system architecture 100 suitable for use in embodiments of the present application.
Fig. 2 shows a schematic diagram of a network architecture 200 of a relay communication system suitable for use in the embodiments of the present application.
Fig. 3 shows a schematic block diagram of a relay communication method suitable for use in the embodiments of the present application.
Fig. 4 shows a schematic interaction diagram suitable for the relay communication method provided in the embodiment of the present application.
Fig. 5 shows another schematic block diagram applicable to the relay communication method provided in the embodiment of the present application.
Fig. 6 shows another schematic interaction diagram suitable for the relay communication method provided in the embodiment of the present application.
Fig. 7 shows a schematic block diagram of a relay communication device suitable for use in embodiments of the present application.
Fig. 8 shows a schematic architecture diagram of a relay communication device suitable for use in embodiments of the present application.
Detailed Description
The technical solution in the present application will be described below with reference to the accompanying drawings.
The wireless communication system mentioned in the embodiments of the present application includes but is not limited to: a Long Term Evolution (LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD) System, a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, a fifth generation (5g) System, a future sixth generation (6g) or New Radio (NR) System, etc.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.
To facilitate understanding of the embodiments of the present application, first, a schematic structural diagram of a communication system 100 according to the embodiments of the present application is briefly described with reference to fig. 1. As shown in fig. 1, the communication system 100 may include two user equipments, such as the user equipment 111 and the user equipment 112 shown in fig. 1, and the communication system 100 may further include an access network equipment, such as the access network equipment 121 shown in fig. 1. When the user equipment 111 is out of network coverage or the communication signal with the access network equipment 121 is not good, the user equipment 112 may communicate with the access network equipment 121 by communicating with the user equipment 112, so that the communication between the user equipment 111 and the access network equipment 121 may be implemented, and the access network equipment 121 forwards data to a data network through the UPF.
The user equipment 111 is connected to the network through indirect communication, and may be referred to as a Remote user equipment (Remote UE) in this embodiment, and the user equipment 121 may be regarded as a user equipment that assists the Remote UE to access to the network, and may be referred to as a Relay user equipment (Relay UE) in this embodiment. That is, the Remote UE communicates with the network through the Relay UE, and uplink and downlink data transmission between the Remote UE and the network is realized.
Fig. 2 shows a schematic diagram of a network architecture 200 of the communication system of the present application.
As shown in fig. 2, the network architecture of the communication system includes, but is not limited to, the following network elements:
1. user Equipment (UE): the user equipment in the embodiment of the present application may also be referred to as: user Equipment (UE), mobile Station (MS), mobile Terminal (MT), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device, etc.
The user device may be a device that provides voice/data connectivity to a user, such as a handheld device, a vehicle mounted device, etc. with wireless connectivity. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (smart), a wireless terminal in city (smart city), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol), SIP) phone, wireless Local Loop (WLL) station, personal Digital Assistant (PDA), handheld device with wireless communication function, computing device or other processing device connected to wireless modem, vehicle-mounted device, wearable device, user equipment in future 5G network or user equipment in future evolved Public Land Mobile Network (PLMN), etc., which is not limited by the embodiments of the present application.
By way of example and not limitation, in embodiments of the present application, the user device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.
In addition, in the embodiment of the present application, the user equipment may also be a user equipment in an internet of things (IoT) system. The IoT is an important component of future information technology development, and is mainly technically characterized in that articles are connected with a network through a communication technology, so that an intelligent network with man-machine interconnection and object interconnection is realized.
In the embodiment of the present application, the IOT technology may achieve massive connection, deep coverage, and power saving for the terminal through a narrowband (narrowband band) NB technology, for example. For example, the NB may include one Resource Block (RB), i.e., the bandwidth of the NB is only 180KB. The communication method according to the embodiment of the application can effectively solve the problem of congestion of the IOT technology mass terminals when the mass terminals access the network through the NB.
In addition, the access device in this embodiment may be a device for communicating with a user equipment, and the access device may also be referred to as an access network device or a radio access network device, for example, the access device may be an evolved NodeB (eNB or eNodeB) in an LTE system, and may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the access device may be an access device in a relay station, an access point, a vehicle-mounted device, a wearable device, and a future 5G network or an access device in a future evolved PLMN network, and may also be an Access Point (AP) in a WLAN, and may be a gNB in a new radio system (NR) system.
In addition, in the embodiment of the present application, the ue may also communicate with ues of other communication systems, for example, inter-device communication. For example, the user equipment may also perform transmission (e.g., sending and/or receiving) of time synchronization messages with user equipment of other communication systems.
2. Access equipment (AN/RAN): the access device in this embodiment may be a device for communicating with a user equipment, and the access device may also be referred to as an access network device or a radio access network device, for example, the access device may be an evolved NodeB (eNB or eNodeB) in an LTE system, and may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the access device may be an access device in a relay station, an access point, a vehicle-mounted device, a wearable device, and a 5G network or an access device in a future evolved PLMN network, and may be an Access Point (AP) in a WLAN, and may be a gNB in an NR system.
In addition, in this embodiment of the present application, the access device is a device in a RAN, or in other words, a RAN node that accesses a user equipment to a wireless network. For example, by way of example and not limitation, as access devices, mention may be made of: a gbb, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP), etc. In one network configuration, a network device may include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node (CU-CP node) and a user plane CU node (CU-UP node), and a RAN device of a DU node.
An access device provides service for a cell, and a user equipment communicates with the access device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the access device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell (small cell), where the small cell may include: urban cell (metro cell), micro cell (microcell), pico cell (pico cell), femto cell (femto cell), etc., and these small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission service.
In addition, multiple cells can simultaneously work at the same frequency on a carrier in an LTE system or a 5G system, and under some special scenes, the concepts of the carrier and the cells can also be considered to be equivalent. For example, in a Carrier Aggregation (CA) scenario, when a secondary carrier is configured for a UE, a carrier index of the secondary carrier and a Cell identification (Cell ID) of a secondary Cell operating on the secondary carrier are carried at the same time, and in this case, it may be considered that the carrier and the Cell are equivalent in concept, for example, it is equivalent that a UE accesses one carrier and one Cell.
The communication system of the present application may also be applicable to vehicle to evolution (V2X) technology, i.e., the user equipment of the present application may also be an automobile, e.g., an intelligent automobile or an autonomous automobile.
"X" in V2X represents a different communication target, and V2X may include, but is not limited to: vehicle to vehicle (V2V), vehicle to road sign (V2I), vehicle to network (V2N), and vehicle to pedestrian (V2P).
In V2X, an access device may configure a "zone" for a UE. Wherein the area may also be referred to as a geographical area. When a region is configured, the world will be divided into a number of regions defined by reference points, length, and width. When the UE determines the area Identifier (ID), the remaining operations are performed by using the length, the width, the number of areas above the length, the number of areas above the width, and the reference point. The above information may be configured by the access device.
The service of V2X can be provided in two ways: namely, a Proximity-based Services Communication (pc5) interface-based mode and a Uu interface-based mode. Where the PC5 interface is an interface defined on the basis of a straight-through link (sidelink), with which communication transmission between communication devices (e.g., automobiles) can be directly performed. The PC5 interface can be used both out of coverage (OOC) and In Coverage (IC), but only authorized communication devices can transmit using the PC5 interface.
3. Access and Mobility Management Function (AMF) network elements: the method is mainly used for mobility management, access management and the like, and can be used for realizing other functions except session management in Mobility Management Entity (MME) functions in the LTE system, for example, functions such as lawful interception and access authorization/authentication. When the AMF network element provides a service for a session in the user equipment, a storage resource of a control plane is provided for the session, so as to store a session identifier, an SMF network element identifier associated with the session identifier, and the like. In the embodiment of the present application, the method and the device can be used for implementing the functions of the access and mobility management network element.
4. Session Management Function (SMF) network element: the method is mainly used for session management, internet Protocol (IP) address allocation and management of the user equipment, selection and management of a termination point of a user plane function, policy control or charging function interface, downlink data notification and the like. In the embodiment of the present application, the method and the device can be used for implementing the function of the session management network element.
5. Policy Control Function (PCF) network element: the unified policy framework is used for guiding network behavior, providing policy rule information and a flow-based charging control function for control plane functional network elements (such as AMF, SMF network elements and the like).
6. Unified Data Management (UDM) network elements: the method is mainly responsible for processing subscription data of the UE, including storage and management of user identification, user subscription data, authentication data and the like.
7. User Plane Function (UPF) network elements: the method can be used for packet routing and forwarding, or quality of service (QoS) processing of user plane data, and the like. The user data can be accessed to a Data Network (DN) through the network element, and the user data can also be received from the data network and transmitted to the user equipment through the access network equipment. The transmission resources and scheduling functions in the UPF network element for providing services to the user equipment are managed and controlled by the SMF network element. In the embodiment of the present application, the method and the device can be used for realizing the function of the user plane network element.
8. Network capability Exposure Function (NEF) Network element: the method is used for safely opening services and capabilities provided by 3GPP network functions to the outside, and mainly supports the safe interaction of the 3GPP network and third-party applications.
9. Application Function (AF) network element: the method is used for carrying out data routing influenced by application, accessing a network open function network element, or carrying out policy control by interacting with a policy framework, and the like, such as influencing data routing decision, a policy control function or providing some services of a third party to a network side.
10. Network Slice Selection Function (NSSF) Network element: the method is mainly responsible for network slice selection, and network slice examples allowed to be accessed by the UE are determined according to slice selection auxiliary information, subscription information and the like of the UE.
11. Authentication Server Function (AUSF) network element: 3GPP and non-3 GPP access authentication is supported.
12. Network storage Function (NRF) Network element: registration and discovery of network functions is supported.
13. A Unified Data storage function (UDR) network element: subscription data used by the UDM and PCF is stored and retrieved.
In the network architecture, an N2 interface is a reference point of RAN and AMF entities, and is used for sending NAS (Non-Access Stratum) messages and the like; the N3 interface is a reference point between the RAN and the UPF network element and is used for transmitting data of a user plane and the like; the N4 interface is a reference point between the SMF network element and the UPF network element, and is used to transmit information such as tunnel identification information, data cache indication information, and downlink data notification message of the N3 connection.
It should be understood that the UE, (R) AN, UPF and DN in fig. 2 are generally referred to as data plane network functions and entities, and data traffic of the user may be transmitted through a PDU session established between the UE and the DN, and the transmission may pass through both network function entities (R) AN and UPF; the other parts are called control plane network functions and entities and are mainly responsible for functions such as authentication and authorization, registration management, session management, mobility management, policy control and the like, so that reliable and stable transmission of user layer traffic is realized.
It should be understood that the network architecture applied to the embodiments of the present application is only an exemplary network architecture described in terms of a conventional point-to-point architecture and a service architecture, and the network architecture to which the embodiments of the present application are applied is not limited thereto, and any network architecture capable of implementing the functions of the network elements described above is applicable to the embodiments of the present application.
It should be understood that the name of the interface between each network element in fig. 2 is only an example, and the name of the interface in the specific implementation may be other names, which is not specifically limited in this application. In addition, the name of the transmitted message (or signaling) between the network elements is only an example, and the function of the message itself is not limited in any way.
It should be noted that the "network element" may also be referred to as an entity, a device, an apparatus, a module, or the like, and the present application is not particularly limited. In the present application, for convenience of understanding and explanation, a description of "network element" is omitted in the partial description, for example, an SMF network element is abbreviated as SMF, in which case, the "SMF" should be understood as an SMF network element or an SMF entity, and explanation of the same or similar cases is omitted below.
It will be appreciated that the above entities or functions may be network elements in a hardware device, or may be software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform).
The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 3 is a schematic block diagram of a relay communication method provided in an embodiment of the present application, where the method 300 may include the following steps:
s301, the first network element obtains a QoS requirement of a data stream # a of a remote user equipment.
Specifically, the first network element may obtain a QoS requirement of the remote user equipment from the application function network element AF, where the QoS requirement may include a delay parameter, a rate, a priority, reliability, and a data Flow description (Flow description) corresponding to the data Flow # a. The data flow description may be in the form of a triplet (destination IP address, destination port and transport layer protocol) or a quintuple (source IP address, source port, destination IP address, destination port and transport layer protocol).
The first network element may further obtain a UE address (UE address), an AF Identifier (AF Identifier), and Identifier information of the remote UE.
It should be understood that the application function network element AF may obtain the QoS requirement and other information by performing service requirement interaction with the remote user equipment.
The first network element may be a PCF network element or a UDM network element.
S302, the first network element generates a first candidate parameter set for the data stream # a according to the QoS requirement, and sends the first candidate parameter set to the second network element.
Specifically, the first network element determines a first candidate parameter set according to the QoS requirement and the identification information of the remote user equipment, where the first candidate parameter set refers to an optional QoS parameter set (Alternative QoS parameter sets) including at least one QoS parameter set (QoS parameter set), the first candidate parameter set is used to determine a target QoS parameter set, and the QoS parameters in the target QoS parameter set are used to transmit the data stream # a between the second device and the UPF network element.
In a possible implementation, the first network element may determine the first set of alternative parameters according to the QoS requirements of the data flow # a and subscription information of the remote user equipment. The subscription information of the remote UE may include a QoS parameter authorized for use, and may further include a corresponding relationship between a QoS parameter of a Relay UE PDU session and a PC5 link QoS parameter.
In a possible implementation, the first network element may further determine the first set of alternative parameters according to the QoS requirement of the data flow # a and subscription information of the relay user equipment. The subscription information of the Relay user equipment may include a QoS parameter authorized for use, and may further include a correspondence between a QoS parameter of a Relay UE PDU session and a PC5 link QoS parameter.
In a possible implementation, the first network element may further determine the first candidate parameter set according to the QoS requirement of the data flow # a and subscription information of the remote user equipment and the relay user equipment. The subscription information of the remote ue and the relay ue may include QoS parameters authorized to be used.
In a possible implementation, the first network element may further generate and send a second set of candidate parameters to the second network element.
The second set of candidate parameters refers to an optional set of PC5QoS parameters (Alternative PC5QoS parameter sets) comprising at least one set of PC5QoS parameters (PC 5QoS parameter set) for determining a target set of PC5QoS parameters, the QoS parameters in the target set of PC5QoS parameters being used for transmitting data stream # a between the second device and the first device.
In a possible implementation manner, the first network element further sends, to the second network element, a corresponding relationship between a first QoS parameter set and a second QoS parameter set, where the first QoS parameter set belongs to the first candidate parameter set, and the second QoS parameter set belongs to the second candidate parameter set.
And S303, the second network element sends an alternative QoS configuration file to the RAN node according to the first alternative parameter set.
Specifically, the second network element generates and sends Alternative QoS Profiles (AQPs) according to the first Alternative parameter set, where the Alternative QoS profiles refer to that the second network element can provide multiple sets of QoS profiles for the RAN for the same QoS flow, and any one of the multiple sets of QoS profiles can be used for relaying the data flow between the user equipment and the user plane functional network element.
In a possible implementation, the second network element generates an alternative QoS profile for data stream # a according to the first alternative parameter set. Specifically, each of the candidate QoS profiles is generated according to a QoS parameter set in the first candidate parameter set, and QoS parameters in the QoS profiles are the same as QoS parameters in the QoS parameter set.
The second network element may be an SMF network element.
S304, the second network element or the relay user equipment determines the QoS parameter of the PC 5.
Specifically, when discovering that the profile associated with the current QoS flow cannot be satisfied, the RAN node selects and sends index information matching the alternative QoS profile to the second network element from the alternative QoS profile.
Specifically, the second network element determines the PC5QoS parameter according to the matching candidate QoS profile.
In a possible implementation, the second network element receives a second candidate parameter set while receiving the first candidate parameter set from the first network element, where the QoS parameters in the first candidate parameter set and the QoS parameters in the second candidate parameter set may have a one-to-one relationship, for example, an nth QoS parameter in the first candidate parameter set corresponds to an nth QoS parameter in the second candidate parameter set, and N may be the number of QoS parameters in the first candidate parameter set. And the second network element determines the PC5QoS parameters according to the second candidate parameter set and the matched candidate QoS configuration file. Specifically, the second network element determines a QoS parameter set in the first candidate parameter set corresponding to the matched candidate QoS configuration file, and then determines the PC5QoS parameter according to the QoS parameter set in the first candidate parameter set and the QoS parameter set in the second candidate parameter set.
In a possible implementation manner, the second network element receives a corresponding relationship between a QoS parameter in a first QoS parameter set and a QoS parameter in a second QoS parameter set sent from the first network element, where the first QoS parameter set belongs to the first candidate parameter set, and the second QoS parameter set belongs to the second candidate parameter set. And the second network element determines the PC5QoS parameters according to the corresponding relation and the matched alternative QoS configuration file. Specifically, the second network element determines the QoS parameter of the corresponding Relay UE PDU session according to the matched candidate QoS configuration file, and further, the second network element determines the corresponding PC5QoS parameter according to the QoS parameter of the Relay UE PDU session and the corresponding relationship.
The above determination of the PC5QoS parameters may also be performed by the relay user equipment.
Specifically, if the relay user equipment has been preconfigured or network authorized to configure a corresponding relationship between the QoS parameters in the first QoS parameter set and the PC5QoS parameters in the second QoS parameter set, the relay user equipment determines the PC5QoS parameters according to the corresponding relationship, where the corresponding relationship may be a corresponding relationship between 5QI and PQI.
Based on the embodiment of the application, a first network element generates multiple candidate parameter sets or multiple groups of parameter corresponding relations according to the QoS requirement of a data stream of remote user equipment, a second network element can generate candidate QoS configuration files according to the multiple candidate parameter sets or multiple groups of parameter corresponding relations, a RAN node selects matched candidate QoS configuration files from the candidate QoS configuration files according to the transmission requirement of the current data stream and sends the matched candidate QoS configuration files to the second network element, and further, the second network element or Relay user equipment can determine updated PC5QoS parameters of a PC5 link according to the matched candidate QoS configuration files, so that the QoS configuration of the PC5 link and the Relay UE PDU session is adjusted, and the end-to-end QoS requirement of the first equipment is guaranteed.
It should be understood that the PC5 link may also be a PC5 connection.
In the following embodiments, for differentiation and without loss of generality, a first device serves as an example of a Remote UE, a second device serves as an example of a Relay UE, a PCF serves as an example of a first network element, and an SMF serves as an example of a second network element, and the first device communicates with the network side through the second device.
It should be understood that the first network element may also be a UDM.
Fig. 4 is a schematic interaction diagram of a relay communication method according to an embodiment of the present application. The method 400 of fig. 4 is a detailed implementation of steps corresponding to the method 300 of fig. 3. The method shown in fig. 4 may include steps S401-S412, which are described in detail below for steps S401-S412, respectively.
S401, the first device establishes PC5 link with the second device, the second device establishes PDU conversation, and completes the establishment of data plane connection with the user plane functional network element.
The user plane function network element may be a UPF network element.
The process of establishing connection between the first device and the network side is mainly divided into two parts, namely establishing PC5 link between the first device and the second device, and establishing PDU session by the second device.
The method comprises the following steps:
in the first step, the first device and the second device respectively obtain authorization information and communication parameter information from a network.
The authorization information specifically includes authorizing the first device and the second device to be a Remote UE and a Relay UE, respectively, and the communication parameter information includes a network-authorized QoS parameter of PC5 used for the first device and the second device to communicate, and may be used for QoS parameter configuration of PC5 link between the first device and the second device.
In the second step, the second device establishes a PDU session.
And the session management function network element SMF allocates an address #1 to the second device, and the address #1 is used for the second device and the UPF to transmit uplink and downlink data. Address #1 may be an IP address, MAC address, etc.
Third, the first device establishes a PC5 link with the second device.
The second device and the first device discover each other and establish a PC5 link, the second device allocates an IP address #2 for PC5 communication to the first device, the second device also allocates an address #3 for network side communication to the first device, and the second device can forward uplink or downlink data for the first device according to the address #3, so that data transmission between the first device and the UPF is realized, and communication between the first device and the network side is guaranteed. Here, the address #3 may be an IP address, and may also be an IP address and a port number. It should be understood that this step is similar to the prior art, and the scheme given in this step is only an example, and other ways of establishing a link may be used in the specific implementation, which is not limited in this application. In addition, the sequence of the specific processes in the above steps is only an example, and the specific implementation of the scheme is not limited at all.
S402, the second device reports the information # A to PCF.
This step includes the second device sending message # a to the SMF, which sends message # a to the PCF.
Specifically, the second device may send the information # a through a Remote UE Report message, and the SMF sends the information # a to the PCF through the session management policy negotiation procedure.
The information # a includes: identification information of the first device, address #3 of the first device.
The identification information of the first device may be a user hidden Identifier (SUCI), a user persistent Identifier (SUPI), a general Public user Identifier (GPSI), or an application layer Identifier (APP layer ID).
It should be noted that the address #3 of the first device may be understood as address information used by the first device to transmit data, i.e., data stream information of the first device.
The PCF acquires the information # a, and stores the information # a.
S403, the PCF acquires information # B.
The PCF may obtain information # B from the application function network element AF.
Specifically, the information # B includes a UE address (UE address) of the first device, an AF Identifier (AF Identifier), a data Flow description (Flow description), a QoS requirement (QoS reference), and identification information of the first device.
The UE address may be an IP address or a MAC address, among others.
The data flow description may be in the form of a triplet (destination IP address, destination port, and transport layer protocol) or a quintuple (source IP address, source port, destination IP address, destination port, and transport layer protocol). The data flow corresponding to the data flow description is denoted as service data flow # a, and accordingly, the PCF acquires information # B, which can also be understood as PCF acquiring information # B of service data flow # a.
It should be noted that the QoS requirement may include a delay parameter, a rate, a priority, a reliability, and the like.
The process of the AF sending information # B to the PCF is: the AF initiates a QoS AF session creation request message to the NEF at first, the request message comprises information # B, the NEF further sends a policy authorization creation request message to the PCF, and the request message carries the information # B.
It should be understood that the AF may perform service requirement interaction with the first device through an application layer to acquire the information # B, and the embodiment of the present application provides only an example of acquiring the information # B, and the information # B may be acquired through other manners during specific implementation, and implementation of other steps is not affected, and all the information may be applied to the embodiment of the present application, and the application is not limited thereto.
S404, the PCF determines a first set of candidate parameters for data stream # a of the first device according to information # B.
The first set of candidate parameters refers to an optional set of QoS parameters (Alternative QoS parameter sets) including at least one OoS parameter set (QoS parameter set), the first set of candidate parameters is used to determine a target set of QoS parameters, the QoS parameters in the target set of QoS parameters are used to transmit the data flow # a between the second device and the UPF network element.
The QoS parameter set may specifically include: and QoS parameters such as a 5G QoS indicator (5 QI), a Packet Delay Budget (Packet Delay Budget), an uplink guaranteed bit rate (UL-guaranteed bit rate), a downlink guaranteed bit rate (DL-guaranteed bit rate), and a Packet error rate.
In one possible implementation, the PCF determines the first set of alternative parameters based on the QoS requirements of data flow # a in information # B and the information of the first device. The information of the first device may be address #3 information of the first device.
Specifically, the data flow corresponding to the data flow # a is described as a data flow of a first device, the first device is a remote user equipment, and the PCF network element determines that the data flow # a is a data flow of the remote user equipment, and further determines a first candidate parameter set for the remote user equipment according to a QoS requirement of the data flow # a. Or, the PCF determines that the data flow # a is the same as the address #3 of the first device in the information # a according to the description of the data flow corresponding to the data flow # a, and further determines the first candidate parameter set for the remote user equipment according to the QoS requirement of the data flow # a. The description of the data flow corresponding to the data flow # a is the same as the address #3 of the first device in the information # a, and it can be understood that any one of the information in the description of the data flow is the same as the corresponding information in the address #3 of the first device, such as the source address in the description of the data flow is the same as the source address in the address #3 of the first device.
In a possible implementation manner, the PCF may determine the first candidate parameter set according to the QoS requirement of the data flow # a and the subscription information of the first device, where the subscription information of the first device may include a QoS parameter authorized to be used, and may also be a corresponding relationship between a QoS parameter of a Relay UE PDU session and a PC5 link QoS parameter. The PCF may determine the first set of alternative parameters in combination with the QoS requirements of data flow # a and the authorized QoS parameters or the correspondence.
For example, if the delay parameter requirement in the QoS requirements of data stream # a in information # B is 10ms, and the subscription information of the first device includes the delay QoS parameters authorized for use, which are 4ms,5ms, and 6ms, the PCF may determine that the delay parameters in the first candidate parameter set are 4ms,5ms, and 6ms, respectively.
For another example, the delay parameter requirement in the QoS requirement of the data flow # a in the information # B is 10ms, and the correspondence between the QoS parameter of the Relay UE PDU session included in the subscription information of the first device and the PC5 link QoS parameter is (4 ms,6 ms), (5 ms ), (6 ms,4 ms), then the PCF may determine that the delay parameters in the first candidate parameter set are 4ms,5ms, and 6ms, respectively.
In one possible implementation, the PCF may determine the first set of alternative parameters according to the QoS requirement of data flow # a and the subscription information of the second device, where the subscription information of the second device may include a QoS parameter authorized for use or a corresponding relationship between a QoS parameter of a Relay UE PDU session and a PC5 link QoS parameter. The PCF may determine the first set of alternative parameters in combination with the QoS requirements of data flow # a and the authorized QoS parameters or the correspondence.
For example, if the delay parameter requirement in the QoS requirement of the data stream # a in the information # B is 10ms, and the subscription information of the second device includes the delay QoS parameters authorized to be used, which are 4ms,5ms and 6ms, the PCF may determine that the delay parameters in the first candidate parameter set are 4ms,5ms and 6ms, respectively.
For another example, the delay parameter requirement in the QoS requirements of data flow # a in information # B is 10ms, and the correspondence between the QoS parameters of the Relay UE PDU session included in the subscription information of the second device and the PC5 link QoS parameters is (4 ms,6 ms), (5 ms ), (6 ms,4 ms), then the PCF may determine that the delay parameters in the first candidate parameter set are 4ms,5ms, and 6ms, respectively.
In a possible implementation, the PCF may determine the first candidate parameter set according to the QoS requirement of the data flow # a and the subscription information of the first device and the second device, and the PCF may determine the first candidate parameter set according to the QoS requirement of the data flow # a and the QoS parameters authorized to be used by the first device and the second device.
For example, in the QoS requirements of data stream # a in information # B, the delay parameter requirement is 10ms, the subscription information of the first device includes delay QoS parameters authorized for use of 4ms,6ms,8ms and 12ms, the subscription information of the second device includes delay QoS parameters authorized for use of 3ms,4ms,6ms and 12ms, the pcf may obtain intersection parameter information of the delay QoS parameters authorized for use by the first device and the second device, that is, 4ms,6ms and 12ms, and the pcf may determine, in combination with the QoS requirements of data stream # a and the intersection parameter information, that the delay parameters in the first candidate parameter set are 4ms and 6ms, respectively.
For another example, the delay parameter requirement in the QoS requirement of the data stream # a in the information # B is 10ms, the subscription information of the first device includes delay QoS parameters authorized for use of 4ms,6ms,8ms and 12ms, the subscription information of the second device includes delay QoS parameters authorized for use of 3ms,4ms,6ms and 12ms, the pcf may determine the delay QoS parameter of the Relay UE PDU session to be 3ms,4ms,6ms according to the subscription information of the second device, then determine the delay QoS parameter of the PC5 to be 4ms,6ms,8ms according to the subscription information of the first device, and the delay parameters in the first candidate parameter set determined to satisfy the delay requirement in combination with the delay parameter requirement are respectively: 4ms and 6ms.
In one possible implementation, the PCF may also identify its preferred set of QoS parameters.
In one possible implementation, the PCF may also generate a second set of alternative parameters.
The second set of candidate parameters refers to an optional set of PC5QoS parameters (Alternative PC5QoS parameter sets) comprising at least one set of PC5QoS parameters (PC 5QoS parameter set) for determining a target set of PC5QoS parameters, the QoS parameters in the target set of PC5QoS parameters being used for transmitting data stream # a between the second device and the first device.
The PC5 OoS parameter set may specifically include: a PC 5G QoS indicator (PQI), a Packet Delay Budget (Packet Delay Budget), an uplink guaranteed bit rate (UL-guaranteed bitrate), a downlink guaranteed bit rate (DL-guaranteed bitrate), a Packet error rate, and other QoS parameters.
Wherein each set of PC5QoS parameters in the second set of candidate parameters corresponds to each set of QoS parameters in the first set of candidate parameters.
In one possible implementation, the PCF determines the second set of alternative parameters based on the QoS requirements of data flow # a and the identification information of the first device in information # B.
Specifically, the data stream # a is a data stream of a first device, the first device is a remote user equipment, and the PCF network element determines, according to the identification information of the remote user equipment, that the data stream # a is a data stream of the remote user equipment, and further determines, according to the QoS requirement of the data stream # a, a second candidate parameter set for the remote user equipment.
In a possible implementation manner, the PCF may determine the second candidate parameter set according to the QoS requirement of the data flow # a and the subscription information of the first device, where the subscription information of the first device may include a QoS parameter authorized to be used, and may also be a corresponding relationship between a QoS parameter of a Relay UE PDU session and a PC5 link QoS parameter. The PCF may determine the second set of alternative parameters in combination with the QoS requirements of data flow # a and the authorized QoS parameters or the corresponding relationship.
For example, if the delay parameter requirement in the QoS requirements of data flow # a in information # B is 10ms, and the subscription information of the first device includes delay QoS parameters authorized for use, which are 4ms,5ms and 6ms, the PCF may determine that the delay parameters in the second candidate parameter set are 6ms,5ms and 4ms, respectively.
For another example, the delay parameter requirement in the QoS requirement of the data flow # a in the information # B is 10ms, and the correspondence between the QoS parameter of the Relay UE PDU session included in the subscription information of the first device and the PC5 link QoS parameter is (4 ms,6 ms), (5 ms ), (6 ms,4 ms), then the PCF may determine that the delay parameters in the second candidate parameter set are respectively 6ms,5ms, and 4ms.
In a possible implementation, the PCF may determine the second candidate parameter set according to the QoS requirement of data flow # a and subscription information of the second device, where the subscription information of the second device may include a QoS parameter authorized to be used or a corresponding relationship between a QoS parameter of a Relay UE PDU session and a PC5 link QoS parameter. The PCF may determine the second set of alternative parameters in combination with the QoS requirements of data flow # a and the authorized QoS parameters or the corresponding relationship.
For example, if the delay parameter requirement in the QoS requirements of data flow # a in information # B is 10ms, and the subscription information of the second device includes delay QoS parameters authorized for use of 4ms,5ms, and 6ms, the PCF may determine that the delay parameters in the second candidate parameter set are respectively 6ms,5ms, and 4ms.
For another example, the delay parameter requirement in the QoS requirement of the data flow # a in the information # B is 10ms, and the correspondence between the QoS parameter of the Relay UE PDU session included in the subscription information of the second device and the PC5 link QoS parameter is (4 ms,6 ms), (5 ms ), (6 ms,4 ms), then the PCF may determine that the delay parameters in the second candidate parameter set are respectively 6ms,5ms, and 4ms.
In a possible implementation manner, specifically, the PCF may determine the second candidate parameter set according to the QoS requirement of the data flow # a and the subscription information of the first device and the second device, and the PCF may determine the second candidate parameter set by combining the QoS requirement of the data flow # a and the QoS parameters authorized to be used by the first device and the second device.
For example, in the QoS requirement of the data stream # a in the information # B, the delay parameter requirement is 10ms, the subscription information of the first device includes the delay QoS parameters authorized to be used, which are 4ms,6ms,8ms and 12ms, the subscription information of the second device includes the delay QoS parameters authorized to be used, which are 3ms,4ms,6ms and 12ms, and the pcf may obtain the intersection parameter information of the delay QoS parameters authorized to be used by the first device and the second device, that is, 4ms,6ms and 12ms, and the pcf may determine that the delay parameters in the second candidate parameter set are 6ms and 4ms, respectively, according to the QoS requirement of the data stream # a and the intersection parameter information.
For another example, the delay parameter requirement in the QoS requirement of the data stream # a in the information # B is 10ms, the subscription information of the first device includes delay QoS parameters authorized for use of 4ms,6ms,8ms and 12ms, the subscription information of the second device includes delay QoS parameters authorized for use of 3ms,4ms,6ms and 12ms, the pcf may determine the delay QoS parameter of the Relay UE PDU session to be 3ms,4ms,6ms according to the subscription information of the second device, then determine the delay QoS parameter of the PC5 to be 4ms,6ms,8ms according to the subscription information of the first device, and the delay parameters in the second candidate parameter set determined to satisfy the delay requirement in combination with the delay parameter requirement are respectively: 6ms and 4ms.
In one possible implementation, the PCF is based on the firstThe set of candidate parameters determines a second set of candidate parameters. For example, the delay parameter requirement in the QoS requirement of the data stream # a in the information # B is 10ms, the pcf needs to split the delay of the PC5 link and the Relay UE PDU session according to the end-to-end 10ms delay requirement, the delay of the PC5 link is xms, and the delay of the Relay UE PDU session is x 'ms, where x ≧ 0,x' ≧ 0. Then, the delay of the PC5 link and the delay of the Relay UE PDU session need to satisfy: x + x' is less than or equal to 10ms. The delay in the first set of alternative parameters generated by the PCF may be 6ms,7ms and 8ms, i.e. the first set of alternative parameters comprises three different sets of QoS parameters, where the delay parameters are x, respectively 1 ’＝6ms，x 2 ’＝7ms，x 3 ’＝8ms。
The PCF generates a second candidate parameter set, specifically, for example, if the time delay in the first candidate parameter set generated by the PCF is 6ms,7ms and 8ms, the PCF splits the time delay of the PC5 link and the time delay of the Relay UE PDU session according to the 10ms time delay requirement, that is, the PC5 link time delay x 1 ≤4ms，x 2 ≤3ms，x 3 Less than or equal to 2ms. That is, the second alternative set of parameters combines a medium latency of x 1 ，x 2 ，x 3 。
It should be understood that the latency of the PC5 link refers to the latency of the transmission of data stream # a between the first device and the second device, and the latency of the Relay UE PDU session refers to the latency of the transmission of data stream # a between the second device and the UPF.
S405, the PCF transmits information # C.
Specifically, the PCF sends information # C to the SMF in the session management policy negotiation flow.
According to step S404, the PCF may generate two kinds of information, and the PCF sends information # C in two cases:
in case one, the PCF sends information # C to the SMF, which includes the first set of candidate parameters, the QoS notification control message and the data stream # a information of the first device. The PCF generates a PCC rule according to the service requirement requested by the AF and sends the PCC rule to the SMF, optionally, the information # C may be placed in the PCC rule, that is, the PCF may place the first candidate parameter set, the QoS notification control message, and the data stream # a of the first device in the PCC rule for sending.
In case two, the information # C includes a first candidate parameter set, a second candidate parameter set, a QoS notification control message, and data stream # a information of the first device. The specific transmission method is the same as the case one.
In a possible implementation, the PCF may further send, to the SMF, a correspondence between the first set of parameters and the second set of parameters, or a correspondence between QoS parameters in the first set of parameters and QoS parameters in the second set of parameters, for example, send a set of parameters (x) 1 ，x 2 ，x 3 ) And parameter set (x) 1 ’，x 2 ’，x 3 ') of a plurality of groups, wherein x 1 And x 1 ' correspond, x 2 And x 2 ' correspond, x 3 And x 3 ' correspond to. Or transmitting a correspondence between the 5QI in the first parameter set and the PQI in the second parameter set, which may be understood as a correspondence of specific parameters, e.g., x 1 And x 1 ' meet the total delay requirement. It is to be understood that the first set of parameters is one of a first set of alternative parameters and the second set of parameters is one of a second set of alternative parameters.
Accordingly, the SMF receives the information # C and stores the information # C.
S406, the SMF generates Alternative QoS profiles (Alternative QoS profiles, AQPs) according to the information # C.
The alternative QoS configuration file means that the SMF may provide multiple sets of QoS configuration files for the RAN for the same QoS flow, and any one of the multiple sets of QoS configuration files may be used for transmitting the data flow between the relay user equipment and the user plane function network element.
The candidate QoS configuration files comprise at least one QoS configuration file, and the QoS configuration files in the candidate QoS configuration files correspond to QoS parameter sets in the first candidate parameter set. The specific QoS parameters in each QoS profile are: 5QI (5G QoS identifier,5G QoS indicator), ARP (Allocation and Retention Priority), GFBR (Guaranteed Flow Bit Rate), and MFBR (Maximum Flow Bit Rate), optionally including QNC (QoS Notification Control), or 5QI, ARP; optionally containing RQA (Reflective QoS Attribute, reverse QoS Attribute). Consistent with the specific content of the configuration file in the prior art.
The SMF generates or modifies QoS flow #1 for the PDU session according to the PCC rules obtained from the PCF.
It should be appreciated that QoS flow #1 is associated with an alternative QoS profile. Data Flow # a is associated to a corresponding QoS Flow #1, which QoS Flow #1 is identified as QFI #1 (QoS Flow Identifier, QFI).
It should be appreciated that for a user equipment, one or more PDU sessions may be established with the 5G network, each PDU session may establish one or more QoS flows, each QoS Flow is identified by a QFI (QoS Flow Identifier) that uniquely identifies a QoS Flow in the session. Each QoS flow may carry multiple traffic data flows with the same QoS requirements.
In a possible implementation manner, the information # C includes a first candidate parameter set, and the SMF generates an candidate QoS profile for the data stream # a according to the first candidate parameter set.
Specifically, each of the candidate QoS profiles is generated according to a QoS parameter set in the first candidate parameter set, and QoS parameters in the QoS profiles are the same as QoS parameters in the QoS parameter set.
For example, the first candidate parameter set includes three parameter sets, respectively: (x) 1 ，y 1 ，z 1 )，(x 2 ，y 2 ，z 2 )，(x 3 ，y 3 ，z 3 ) Wherein x is 1 ，x 2 ，x 3 Three QoS parameters, y, to satisfy the requirement of parameter x 1 ，y 2 ，y 3 Three QoS parameters, z, to meet the requirement of parameter y 1 ，z 2 ，z 3 In order to satisfy three QoS parameters required by the parameter z, x, y and z are respectively three different QoS parameter requirements, and x, y and z are more than or equal to 0. The SMF can generate three QoS profiles according to the three parameter sets, which are: (x) 1 ，y 1 ，z 1 )，(x 2 ，y 2 ，z 2 )，(x 3 ，y 3 ，z 3 )。
It should be understood that the QoS parameter may be a delay parameter, a rate, a priority, and the like, which is not limited in this embodiment.
S407, the SMF transmits information # D to the RAN.
This information # D includes an alternative QoS profile, QFI #1 and a notification control message. This information # D is used to inform the RAN QoS profile alternative to which flow #1 is associated. The notification control message is used to instruct the RAN to enable a notification control mechanism when the RAN detects that the profile associated with the current QoS flow #1 cannot be met or can meet a more preferred profile, send a notification message to the SMF, and notify the SMF of currently supported QoS profile information or better profile information. The RAN may determine, according to the QoS requirement and the current data transmission condition, that the current profile cannot be guaranteed or that the preferred profile can be satisfied.
It should be understood that, among other things, a more preferred profile may be understood that the QoS parameter that the current Relay UE PDU session satisfies may be better than the QoS parameter of the currently associated profile, e.g., the latency parameter of the profile associated with the current QoS flow #1Relay UE PDU session is 6ms, but the RAN monitors that the latency parameter that the current QoS flow can satisfy is 4ms, in which case the RAN also notifies the control mechanism, sends a notification message to the SMF, and informs the SMF of the better profile information that is currently supported.
S408, the RAN transmits information # E to the SMF according to the information # D.
The RAN sends the index information of the supported QoS profile information or the more optimal profile information when it finds that the profile associated with the current QoS flow #1 cannot be satisfied or there is a more optimal profile. Therefore, the information # E includes the notification message, index information of the matching alternative QoS profile.
It should be understood that the matching candidate QoS profile is the QoS profile that the RAN satisfies, which means that the RAN selects the QoS profile for QoS flow #1 from the candidate QoS profiles that satisfies the current transmission data flow # a between the second device and the UPF.
It should be understood that the matching alternative QoS profile corresponds to one of the first set of alternative parameters.
S409, the SMF determines the PC5QoS parameter of the current PC5 link according to the information # E.
The PC5QoS parameter is used for the second device to relay the data stream # a with the first device.
Specifically, the SMF receives a second candidate parameter set sent from the PCF, and determines the PC5QoS parameter according to the second candidate parameter set and the matching candidate QoS profile.
In a possible implementation manner, the second network element receives the first set of candidate parameters from the first network element and also receives the second set of candidate parameters sent from the first network element, where the QoS parameters in the first set of candidate parameters and the QoS parameters in the second set of candidate parameters may have a one-to-one relationship, for example, an nth QoS parameter in the first set of candidate parameters corresponds to an nth QoS parameter in the second set of candidate parameters, and N may be the number of QoS parameters in the first set of candidate parameters. And the second network element determines the PC5QoS parameters according to the second alternative parameter set and the matched alternative QoS configuration file. Specifically, the second network element determines a QoS parameter set in the first candidate parameter set corresponding to the matched candidate QoS configuration file, and then determines the PC5QoS parameter according to the QoS parameter set in the first candidate parameter set and the QoS parameter set in the second candidate parameter set.
In a possible implementation manner, the SMF receives a corresponding relationship between a first set of QoS parameters and a second set of QoS parameters sent by the PCF, wherein the first set of QoS parameters belongs to a first candidate parameter set, and the second set of QoS parameters belongs to a second candidate parameter set. The SMF may determine a target PC5QoS parameter set according to the correspondence and the second candidate parameter set, where the target PC5QoS parameter set includes the PC5QoS parameter, and further determine the PC5QoS parameter according to the target PC5QoS parameter set and the matching candidate QoS profile.
In a possible implementation manner, the SMF receives a corresponding relation between the QoS parameters in the first QoS parameter set and the QoS parameters in the second QoS parameter set sent by the PCF, and determines the PC5QoS parameters according to the corresponding relation and the matching candidate QoS configuration file.
For example, the SMF receives a second set of alternative parameters from the PCF transmission as: (x) 1 ’，y 1 ’，z 1 ’)，(x 2 ’，y 2 ’，z 2 ’)，(x 3 ’，y 3 ’，z 3 ') match the alternative QoS profile to (x) 2 ，y 2 ，z 2 ) The target PC5QoS parameter set may be determined to be (x) 2 ’，y 2 ’，z 2 ') to a host; the first set of QoS parameters and the second set of QoS parameters have a corresponding relationship of (x) 1 ，y 1 ，z 1 ) And (x) 1 ’，y 1 ’，z 1 ') may be determined in conjunction with the correspondence.
In a possible implementation, the SMF may determine a target PC5QoS parameter set according to a preconfigured correspondence between the first QoS parameter set and the second QoS parameter set, and the second candidate parameter set, where the target PC5QoS parameter set includes the PC5QoS parameter, and further determine the PC5QoS parameter according to the target PC5QoS parameter set and the matching candidate QoS profile.
In one possible implementation, the SMF determines the PC5QoS parameters according to the preconfigured correspondence of the first set of QoS parameters and the second set of QoS parameters, and the matching alternative QoS profile.
It should be understood that the SMF may determine the matching alternative QoS profile according to the index information of the matching alternative QoS profile in the information # E. It should be noted that, when the matching candidate QoS profile indicated by the indication information # a includes a more optimal profile, the SMF may not perform the step of determining the PQI. In this case, the current QoS flow #1 may satisfy the QoS parameter of the Relay UE PDU session more preferably, for example, the delay parameter may be increased from the current 6ms to 4ms, the delay requirement of the QoS flow #1 is 10ms, and the corresponding PC5QoS parameter may not be adjusted, for example, the delay parameter of the PC5 link is currently 4ms, and the total delay requirement is still satisfied without adjustment.
It should be noted that this step is an optional step. If the second device has configured a corresponding relationship between the QoS parameters in the first QoS parameter set and the PC5QoS parameters in the second QoS parameter set, and the PC5QoS parameters are determined by the second device according to the corresponding relationship, the SMF does not need to perform this step. The correspondence may be a 5QI to PQI correspondence. S410, the SMF transmits the information # F to the second device.
Specifically, the SMF transmits the information # F to the second device through the NAS message of the AMF.
The information # F is used for indicating the QoS parameter that the current Relay UE PDU session of the second device satisfies. The information # F includes: and matching the QoS parameter of the candidate QoS configuration file with the identifier QFI #1 of the QoS flow #1, wherein the QoS parameter met by the Relay UE PDU session can be 5QI #1.
Optionally, the information # F further includes a PC5QoS parameter, such as PQI.
The SMF may determine whether the PC5QoS parameters need to be included in the information # F. Specifically, the SMF determines the QoS parameter of the first QoS parameter set and the QoS parameter of the second QoS parameter set according to whether the second device is preconfigured or network authorized. If configured, the PC5QoS parameters are not included in the information # F; if not configured, the PC5QoS parameters are included in the information # F.
S411, the second device determines the PC5QoS parameters from the information # F.
Optionally, if the information # F does not include the PC5QoS parameter, the second device determines the QoS parameter according to the information # F, and further determines the PC5QoS parameter according to a correspondence between the QoS parameter in the first QoS parameter set and the QoS parameter in the second QoS parameter set. The corresponding relationship may be pre-configured in the second device or obtained from the network, and specifically may be a corresponding relationship between the 5QI and the PQI. The second device determines PQI according to the 5QI information and the correspondence in the information # F.
It should be noted that this step is an optional step, and is performed when the PC5QoS parameter is not included in the information # F.
S412, the second device sends the request message to the first device.
The request message includes PC5QoS flow information and PC5QoS parameters, e.g., PFI #1 and PQI #1. The request message is used for requesting the first device to modify the PC5QoS parameters corresponding to the PC5QoS flow in the current PC5 link, and the PC5QoS parameter adjustment is realized through the PC5 link modification flow. The request message may be a link modification request message.
According to the communication method provided by the embodiment of the application, the PCF generates a first alternative parameter set for the data stream # A of the first device according to the QoS request provided by the AF, the SMF generates a plurality of alternative QoS configuration files for the data stream # A according to the alternative parameter set, the SMF acquires the current Relay UE PDU session matching alternative QoS configuration files from the RAN, and further the SMF or the second device determines the updated PC5QoS parameters of the PC5 link according to the matching configuration files, so that the QoS configuration of the PC5 link and the Relay UE PDU session is adjusted, and the end-to-end QoS requirement of the first device is guaranteed.
Fig. 5 is another schematic block diagram of a relay communication method provided in an embodiment of the present application, where the method 500 may include the following steps:
s501, the first network element obtains a QoS requirement of a data stream # a of a remote user equipment.
Specifically, the first network element may obtain a QoS requirement of the remote user equipment from the application function network element AF, where the QoS requirement may include a delay parameter, a rate, a priority, reliability, and a data Flow description (Flow description) corresponding to the data Flow # a. The data flow description may be in the form of a triplet (destination IP address, destination port and transport layer protocol) or a quintuple (source IP address, source port, destination IP address, destination port and transport layer protocol).
The first network element may further obtain a UE address (UE address), an AF Identifier (AF Identifier), and Identifier information of the remote UE.
It should be understood that the application function network element AF may obtain the QoS requirements and other information by interacting with the service requirements of the remote user equipment.
The first network element may be a PCF network element or a UDM network element.
S502, the first network element generates a corresponding relation of a plurality of groups of PC5QoS parameters and QoS parameters of the Relay UE PDU conversation for the data flow # A according to the QoS requirement, and sends the corresponding relation to the second network element.
Specifically, the first network element determines, according to the QoS requirement and the identification information of the remote user equipment, a correspondence between multiple sets of PC5QoS parameters and QoS parameters of a Relay UE PDU session, where the multiple sets of correspondence may include a first correspondence and a second correspondence, the first correspondence includes a correspondence between a first QoS parameter and a second QoS parameter, and the second correspondence includes a correspondence between a third QoS parameter and a fourth QoS parameter. The first QoS parameter and the third QoS parameter refer to a PC5QoS parameter, which is used to transmit the data stream # a between the remote user equipment and the Relay user equipment, and the second QoS parameter and the fourth QoS parameter refer to a QoS parameter corresponding to a PDU session of the Relay UE, which is used to transmit the data stream # a between the Relay user equipment and the user plane function network element.
In a possible implementation manner, the first network element may determine, according to the QoS requirement of the data stream # a and the subscription information of the remote user equipment, a correspondence between the sets of PC5QoS parameters and the QoS parameters of the Relay UE PDU session. The subscription information of the remote UE may include a QoS parameter authorized for use, and may further include a corresponding relationship between a QoS parameter of a Relay UE PDU session and a PC5 link QoS parameter.
In a possible implementation manner, the first network element may further determine, according to the QoS requirement of the data flow # a and the subscription information of the Relay user equipment, a correspondence between the sets of PC5QoS parameters and QoS parameters of the Relay UE PDU session. The subscription information of the Relay user equipment may include a QoS parameter authorized for use, and may further include a correspondence between a QoS parameter of a Relay UE PDU session and a PC5 link QoS parameter.
In a possible implementation manner, the first network element may further determine, according to the QoS requirement of the data stream # a and subscription information of the remote user equipment and the Relay user equipment, a correspondence between the multiple sets of PC5QoS parameters and QoS parameters of the Relay UE PDU session. The subscription information of the remote ue and the relay ue may include QoS parameters authorized to be used.
In a possible implementation, the first network element may further send, to the second network element, indication information according to the QoS requirement of the data flow # a, where the indication information is used to indicate that an alternative QoS profile is generated, and the alternative QoS profile is used for the RAN node to determine a matching alternative QoS profile, and the matching alternative QoS profile is a QoS profile that is satisfied by the RAN node.
S503, the second network element sends the alternative QoS configuration file to the RAN node according to the corresponding relation between the multiple sets of PC5QoS parameters and the QoS parameters of the Relay UE PDU session.
In a possible implementation manner, the second network element generates an alternative QoS configuration file for the data stream # a according to QoS parameters (for example, the second parameter and the fourth parameter) of the Relay UE PDU session included in the correspondence between the multiple sets of PC5QoS parameters and the QoS parameters of the Relay UE PDU session. Specifically, each QoS configuration file in the alternative QoS configuration files is generated according to the QoS parameters of the Relay UE PDU session included in the corresponding relationship between the set of PC5QoS parameters and the QoS parameters of the Relay UE PDU session, and the QoS parameters in the QoS configuration files are the same as the QoS parameters of the Relay UE PDU session in the set of corresponding relationship.
In a possible implementation manner, the second network element generates an alternative QoS configuration file for the data stream # a according to the QoS parameters of the Relay UE PDU session included in the correspondence between the indication information and the QoS parameters of the multiple sets of PC5QoS parameters and the Relay UE PDU session.
The second network element may be an SMF network element.
S504, the second network element or the relay user equipment determines the PC5QoS parameter.
Specifically, when discovering that the profile associated with the current QoS flow cannot be satisfied, the RAN node selects and sends index information matching the alternative QoS profile to the second network element from the alternative QoS profile.
Specifically, the second network element determines the PC5QoS parameter according to the matching candidate QoS profile.
In a possible implementation manner, the second network element determines the QoS parameter of the Relay UE PDU session according to the matching candidate QoS configuration file, and determines the PC5QoS parameter according to the QoS parameter of the Relay UE PDU session and the corresponding relationship between the PC5QoS parameter and the QoS parameter of the Relay UE PDU session.
The above determination of the PC5QoS parameters may also be performed by the relay user equipment.
Specifically, if the relay user equipment is preconfigured or network authorized to configure a corresponding relationship between the QoS parameters in the first QoS parameter set and the PC5QoS parameters in the second QoS parameter set, the relay user equipment determines the PC5QoS parameters according to the corresponding relationship, where the corresponding relationship may be a corresponding relationship between a 5QI and a PQI.
Based on the embodiment of the application, a first network element generates multiple sets of QoS parameters of Relay UE PDU sessions and corresponding relations between the PC5QoS parameters and the QoS parameters of Relay UE PDU sessions according to QoS requirements of remote user equipment data streams, a second network element can generate alternative QoS configuration files according to the multiple sets of corresponding relations, and a RAN node selects matched alternative QoS configuration files from the alternative QoS configuration files according to current data stream transmission requirements and sends the matched alternative QoS configuration files to the second network element.
It should be understood that the PC5 link may also be a PC5 connection.
Fig. 6 is another schematic interaction diagram of a relay communication method according to an embodiment of the present application. Method 600 of fig. 6 is a detailed implementation of steps corresponding to method 500 of fig. 5.
The method shown in FIG. 6 may include steps S601-S611, which are described in detail below for steps S601-S611, respectively.
S601-S603 are substantially the same as steps S401-S403 of the method 400, and repeated descriptions are omitted for avoiding redundancy.
S604, the PCF generates multiple sets of correspondences for the data stream # a of the first device based on the information # B.
The corresponding relation refers to the corresponding relation between the PC5QoS parameter and the QoS parameter corresponding to the PDU session of the Relay UE.
For example, the PCF generates a first correspondence comprising a correspondence of the first QoS parameter to the second QoS parameter and a second correspondence comprising a correspondence of the third QoS parameter to the fourth QoS parameter. The first QoS parameter and the third QoS parameter refer to a PC5QoS parameter for transmitting the data stream # a between the second device and the first device, the second QoS parameter and the fourth QoS parameter refer to a QoS parameter corresponding to a PDU session of the Relay UE for transmitting the data stream # a between the second device and the user plane function network element, and the second device forwards the data stream # a between the first device and the user plane function network element.
The QoS parameter set may specifically include: and QoS parameters such as a 5G QoS indicator (5 QI), a Packet Delay Budget (Packet Delay Budget), an uplink guaranteed bit rate (UL-guaranteed bit rate), a downlink guaranteed bit rate (DL-guaranteed bit rate), and a Packet error rate.
It should be understood that,
it should be noted that the second QoS parameter is different from the fourth QoS parameter, which means that the PCF generates two different sets of QoS parameters corresponding to the PDU sessions of the Relay UE according to the QoS requirement in the information # B.
And the PCF determines a plurality of groups of corresponding relations according to the QoS requirement of the data flow # A in the information # B and the identification information of the first equipment.
Specifically, the data stream # a is a data stream of a first device, the first device is a remote user equipment, and the PCF network element determines, according to the identification information of the remote user equipment, that the data stream # a is a data stream of the remote user equipment, and further determines, according to the QoS requirement of the data stream # a, multiple sets of correspondence for the remote user equipment.
In a possible implementation manner, the PCF may determine the multiple sets of corresponding relationships according to the QoS requirement of the data stream # a and the subscription information of the first device, where the subscription information of the first device may include a QoS parameter authorized for use, and may also be a corresponding relationship between a session QoS parameter of Relay UE PDU and a link QoS parameter of PC 5. The PCF may determine multiple sets of correspondences in combination with the QoS requirements of data stream # a and the authorized QoS parameters or the correspondences.
Specifically, the PCF may determine the corresponding relationship according to the QoS requirement of the data flow # a and the subscription information of the first device, where the subscription information of the first device includes the QoS parameter authorized for use. The PCF may determine multiple sets of correspondences in conjunction with the QoS requirements of data stream # a and the authorized QoS parameters.
For example, if the delay parameter requirement in the QoS requirement of the data stream # a in the information # B is 10ms, and the subscription information of the first device includes the delay QoS parameters authorized for use, i.e., 4ms,5ms, and 6ms, the PCF may determine that the multiple sets of correspondence relationships are (4 ms,6 ms), (5 ms ), and (6 ms,4 ms).
For another example, the delay parameter requirement in the QoS requirement of the data flow # a in the information # B is 10ms, and the correspondence between the Relay UE PDU session QoS parameter included in the subscription information of the first device and the PC5 link QoS parameter is (4 ms,6 ms), (5 ms ), (6 ms,4 ms), then the PCF may determine that the multiple sets of correspondence are (4 ms,6 ms), (5 ms ), (6 ms,4 ms).
In one possible implementation, the PCF may determine multiple sets of correspondences according to the QoS requirement of the data stream # a and the subscription information of the second device, where the subscription information of the second device includes the QoS parameter authorized for use, and may also be a correspondence between the session QoS parameter of the Relay UE PDU and the link QoS parameter of the PC 5. The PCF may determine multiple sets of correspondences in combination with the QoS requirements of data stream # a and the authorized QoS parameters or the correspondences.
For example, if the delay parameter requirement in the QoS requirement of the data stream # a in the information # B is 10ms, and the subscription information of the second device includes the delay QoS parameters authorized for use, which are 4ms,5ms, and 6ms, the PCF may determine the corresponding relationship to be (4 ms,6 ms), (5 ms ), and (6 ms,4 ms).
For another example, the delay parameter requirement in the QoS requirement of the data flow # a in the information # B is 10ms, and the correspondence between the Relay UE PDU session QoS parameter included in the subscription information of the second device and the PC5 link QoS parameter is (4 ms,6 ms), (5 ms ), (6 ms,4 ms), then the PCF may determine that the multiple sets of correspondence are (4 ms,6 ms), (5 ms ), (6 ms,4 ms).
In one possible implementation, the PCF may determine multiple sets of correspondences according to the QoS requirements of data stream # a and the subscription information of the first device and the second device, and the PCF may determine multiple sets of correspondences by combining the QoS requirements of data stream # a and the QoS parameters authorized to be used by the first device and the second device.
For example, in the QoS requirement of data stream # a in information # B, the delay parameter requirement is 10ms, the subscription information of the first device includes delay QoS parameters authorized to be used, which are 4ms,6ms,8ms and 12ms, the subscription information of the second device includes delay QoS parameters authorized to be used, which are 3ms,4ms,6ms and 12ms, and pcf may obtain intersection parameter information of the delay QoS parameters authorized to be used by the first device and the second device, that is, 4ms,6ms and 12ms, pcf may determine, in combination with the QoS requirement of data stream # a and the intersection parameter information, that sets of corresponding relationships are (4 ms,6 ms) and (6 ms,4 ms), respectively.
For another example, the delay parameter requirement in the QoS requirement of the data stream # a in the information # B is 10ms, the subscription information of the first device includes delay QoS parameters authorized for use of 4ms,6ms,8ms and 12ms, the subscription information of the second device includes delay QoS parameters authorized for use of 3ms,4ms,6ms and 12ms, the pcf may determine the delay QoS parameter of the Relay UE PDU session to be 3ms,4ms,6ms according to the subscription information of the second device, then determine the delay QoS parameter of the PC5 to be 4ms,6ms,8ms according to the subscription information of the first device, and determine multiple sets of corresponding relationships meeting the delay requirement by combining the delay parameter requirement as follows: (4 ms,6 ms), (6 ms,4 ms).
In one possible implementation, the PCF may also generate an indication from the information # B, the indication instructing the SMF to generate an alternative QoS profile from the information # B.
The alternative QoS configuration file means that the SMF may provide multiple sets of QoS configuration files for the RAN for the same QoS flow, and any one of the multiple sets of QoS configuration files may be used for the relay user equipment to transmit the data flow between the relay user equipment and the user plane functional network element.
The candidate QoS configuration files comprise at least one QoS configuration file, and the QoS configuration files in the candidate QoS configuration files correspond to QoS parameter sets in the first candidate parameter set. The specific QoS parameters of each QoS profile are: 5QI (5G QoS identifier,5G QoS indicator), ARP (Allocation and Retention Priority), GFBR (Guaranteed Flow Bit Rate), and MFBR (Maximum Flow Bit Rate), optionally including QNC (QoS Notification Control), or 5QI, ARP; optionally containing RQA (Reflective QoS Attribute, reverse QoS Attribute). Consistent with the specific content of the configuration file in the prior art.
In a possible implementation manner, the second network element generates an alternative QoS configuration file for the data stream # a according to the QoS parameters of the Relay UE PDU session included in the correspondence between the multiple sets of PC5QoS parameters and the QoS parameters of the Relay UE PDU session. Specifically, each QoS configuration file in the alternative QoS configuration files is generated according to the QoS parameters of the Relay UE PDU session included in the corresponding relationship between the set of PC5QoS parameters and the QoS parameters of the Relay UE PDU session, and the QoS parameters in the QoS configuration files are the same as the QoS parameters of the Relay UE PDU session in the set of corresponding relationship.
In one possible implementation, the PCF sends the indication information.
S605, the PCF transmits information # G to the SMF.
The information # G includes information of the data flow # a, a plurality of sets of correspondence and QoS notification control messages.
The PCF generates a PCC rule according to the service requirement requested by the AF and sends the PCC rule to the SMF, optionally, the information # G may be placed in the PCC rule, that is, the PCF may place the information of the correspondence, the QoS notification control message, and the data flow # a in the PCC rule and send the information.
In one possible approach, the information # G may also include indication information.
S606, the SMF generates Alternative QoS Profiles (AQPs) for the data stream # a of the first device according to the information # G, and sends the Alternative QoS Profiles (AQPs) to the RAN.
The SMF generates or modifies QoS flow #1 for the PDU session according to the PCC rules obtained from the PCF.
It should be appreciated that the association of QoS Flow #1 to an alternative QoS profile associates data Flow # a to a corresponding QoS Flow #1, identified as QFI #1 (QoS Flow Identifier, QFI).
Specifically, the SMF generates the alternative QoS profile for the data flow # a according to the QoS parameters (for example, the second parameter and the fourth parameter) of the PDU session of the second device included in the multiple sets of correspondence relationship in the information # G.
For example, the multiple sets of corresponding relationships are: (x) 1 ，x 1 ’)，(x 2 ，x 2 ') wherein x is 1 And x 2 For the PC5 link QoS parameter, x 1 ' and x 2 ' for the QoS parameter of the second device PDU session, the SMF may generate an alternative QoS profile according to the QoS parameter of the second device PDU session, which respectively is: x is a radical of a fluorine atom 1 ' and x 2 ’。
It should be understood that the QoS parameter may be a delay parameter, a rate, a priority, and the like, which is not limited in this embodiment.
In one possible implementation manner, the information # G includes indication information, and the SMF generates an alternative QoS profile for the data stream # a according to the indication information and the corresponding relationship.
S607, the SMF transmits the information # D to the RAN.
This information # D includes an alternative QoS profile, QFI #1 and a notification control message. This information # D is used to inform the RAN QoS flow #1 of the associated alternative QoS profile. The notification control message is used to instruct the RAN to enable a notification control mechanism when the RAN detects that the profile associated with the current QoS flow #1 cannot be met or can meet a more preferred profile, send a notification message to the SMF, and notify the SMF of currently supported QoS profile information or better profile information. The RAN may determine, according to the QoS requirement and the current data transmission condition, that the current profile cannot be guaranteed or that the preferred profile can be satisfied.
Wherein the more preferable configuration file may be understood as that the QoS parameter satisfied by the QoS flow #1 of the current Relay UE PDU session may be better than the QoS parameter of the currently associated configuration file, for example, the delay parameter of the configuration file associated with the QoS flow #1 of the current Relay UE PDU session is 6ms, but the RAN detects that the delay parameter that the current QoS flow can satisfy is 4ms, in this case, the RAN also notifies the control mechanism, sends a notification message to the SMF, and notifies the SMF of the currently supported more preferable configuration file information.
S608, the RAN transmits the information # E to the SMF according to the information # D.
The RAN selects and transmits supported QoS profile information or index information of more optimal profile information from the alternative QoS profile in the information # D when it finds that the profile associated with the current QoS flow #1 cannot be satisfied or there is a more preferred profile. Therefore, the information # E includes a notification message, index information matching an alternative QoS profile (including supported profile information or more preferred profile information).
It should be understood that the matching candidate QoS profile is a QoS profile that the RAN satisfies, which means that the RAN selects a QoS profile for QoS flow #1 from the candidate QoS profiles that satisfies the current transmission data flow # a between the second device and the UPF.
S609, the SMF determines a fifth QoS parameter according to the information # E.
And the SMF determines a matched alternative QoS configuration file according to the information # E, and determines a corresponding sixth QoS parameter according to the matched alternative QoS configuration file.
Further, the SMF determines a corresponding fifth QoS parameter according to the sixth QoS parameter and the correspondence.
For example, the alternative QoS profile generated by the SMF according to the QoS parameters (the second parameter and the fourth parameter) of the PDU session of the second device is: x is the number of 1 ' and x 2 ', the matching alternative QoS file notified by RAN is x 2 ', the SMF determines a sixth QoS parameter (the QoS parameter for the second device PDU session) as x based on the matching candidate QoS profile 2 ', the corresponding relation is (x) 1 ，x 1 ’)，(x 2 ，x 2 '), the SMF determines the fifth QoS parameter as x according to the sixth QoS parameter and the corresponding relation 2 。
The SMF sends a fifth QoS parameter to the second device, the fifth QoS parameter being for QoS parameter configuration of the PC5 link.
Steps S610-S612 are similar to steps S410-412 of method 400 and will not be described in detail herein.
According to the communication method provided by the embodiment of the application, the PCF generates a plurality of groups of corresponding relations for the data stream # A of the first equipment according to the QoS request provided by the AF, the SMF generates a plurality of alternative QoS configuration files for the data stream # A according to the plurality of groups of corresponding relations, the SMF acquires the QoS configuration file matched with the current Relay UE PDU session from the RAN, and further the SMF or the second equipment determines a fifth QoS parameter, namely the updated QoS parameter of the PC5 link according to the matched configuration files and the corresponding relations, so that the QoS configuration of the PC5 link and the Relay UE PDU session is adjusted, and the end-to-end QoS requirement of the first equipment is guaranteed.
The various embodiments described herein may be implemented as stand-alone solutions or combined in accordance with inherent logic and are intended to fall within the scope of the present application.
It should be understood that each step in the foregoing embodiments is only one possible implementation manner, and the embodiments of the present application are not limited thereto.
It is to be understood that, in the foregoing method embodiments, the method and the operation implemented by the user equipment may also be implemented by a component (e.g., a chip or a circuit) available to the user equipment, and the method and the operation implemented by the access network equipment (e.g., a RAN node) may also be implemented by a component (e.g., a chip or a circuit) available to the access network equipment.
The above description mainly introduces the scheme provided by the embodiments of the present application from various interaction perspectives. It is understood that each network element, for example, the transmitting end device or the receiving end device, includes a corresponding hardware structure and/or software module for performing each function in order to implement the above functions. Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiment of the present application, the sending end device or the receiving end device may be divided into functional modules according to the above method examples, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a form of hardware or a form of a software functional module. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and another division manner may be available in actual implementation. The following description will be given by taking an example in which each functional module is divided by using a corresponding function.
The method provided by the embodiment of the present application is described in detail above with reference to fig. 3 to 5. Hereinafter, the apparatus provided in the embodiment of the present application will be described in detail with reference to fig. 6 to 7. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, for brevity, details are not repeated here, since the details that are not described in detail may be referred to the above method embodiments.
Fig. 7 is a schematic block diagram of a relay communication apparatus provided in an embodiment of the present application. The relay communication apparatus 700 includes a transceiver unit 710 and a processing unit 720. The transceiver unit 710 may implement corresponding communication functions, and the processing unit 720 is configured to perform data processing, so that the communication apparatus implements the foregoing method embodiments. The transceiving unit 710 may also be referred to as a communication interface or a communication unit.
Optionally, the relay communication device 700 may further include a storage unit, where the storage unit may be configured to store instructions and/or data, and the processing unit 720 may read the instructions and/or data in the storage unit, so as to enable the communication device to implement the foregoing method embodiments.
The relay communication apparatus 700 may be configured to perform the actions performed by the first network element in the foregoing method embodiments, in this case, the relay communication apparatus 700 may be the first network element or a component configurable to the first network element, the transceiver 710 is configured to perform operations related to transceiving of the first network element side in the foregoing method embodiments, the storage 720 is configured to perform operations related to data or instruction storage of the first network element side in the foregoing method embodiments, and the processing unit 730 is configured to perform operations related to processing of the first network element side in the foregoing method embodiments. The first network element may be a PCF network element or a UDM network element.
Alternatively, the relay communication apparatus 700 may be configured to perform the actions performed by the second network element in the foregoing method embodiments, in this case, the relay communication apparatus 700 may be the second network element or a component configurable in the second network element, the transceiver 710 is configured to perform the operations related to transceiving of the second network element side in the foregoing method embodiments, the storage 720 is configured to perform the operations related to data or instruction storage of the second network element side in the foregoing method embodiments, and the processing unit 730 is configured to perform the operations related to processing of the second network element side in the foregoing method embodiments. The second network element may be an SMF network element.
As a design, the relay communication apparatus 700 is configured to perform the actions performed by the first network element in the embodiment shown in fig. 4, and the transceiver 710 is configured to obtain a QoS requirement of a data flow of a remote user equipment, and according to the QoS requirement of the data flow, further configured to send a first candidate parameter set to the second network element, where the first candidate parameter set is used to determine a target QoS parameter set, and a QoS parameter in the target QoS parameter set is used to transmit the data flow between the relay user equipment and the user plane function network element. The processing unit 720 is configured to determine the first candidate parameter set according to the QoS requirement of the data flow.
The relay communication device 700 may implement the steps or the flow corresponding to the steps executed by the first network element in the method 400 and the method 600 according to the embodiment of the present application, and the relay communication device 700 may include units for executing the methods executed by the first network element in the method 400 in fig. 4 and the method 600 in fig. 6. Also, the units and other operations and/or functions described above in the relay communication device 700 are respectively for implementing the corresponding flows of the method 400 in fig. 4 and the method 600 in fig. 6.
Wherein, when the communication apparatus 700 is configured to execute the method 400 in fig. 4, the transceiver 710 is configured to execute the steps 403 and 405 in the method 400, and the processing unit 720 is configured to execute the step 404 in the method 400.
When the communication apparatus 700 is configured to perform the method 600 in fig. 6, the transceiver unit 710 may be configured to perform the steps 603 and 605 in the method 600, and the processing unit 720 may be configured to perform the step 604 in the method 600.
It should be understood that the specific processes of the units for executing the corresponding steps have been described in detail in the above method embodiments, and are not described herein again for brevity.
As another design, the relay communication apparatus 700 is configured to perform the actions performed by the second network element in the embodiment shown in fig. 4, and the transceiver unit 710 is configured to receive a first alternative parameter set from the first network element, where the first alternative parameter set is used to determine a target QoS parameter set, and a QoS parameter in the target QoS parameter set is used to transmit a data stream of a remote user equipment between the relay user equipment and the user plane function network element; and the server is further configured to send a PC5QoS parameter to the relay user equipment according to the matching candidate QoS profile, where the PC5QoS parameter is used to transmit the data stream between the relay user equipment and the remote user equipment. The processing unit 720 is configured to determine the PC5QoS parameter according to the matching candidate QoS profile.
The relay communication device 700 may implement the steps or processes corresponding to those performed by the second network element in the method 400 and the method 600 according to the embodiment of the present application, and the relay communication device 700 may include units for performing the methods performed by the second network element in the method 400 in fig. 4 and the method 600 in fig. 6. Also, the units and other operations and/or functions in the relay communication device 700 are respectively for realizing the corresponding flows of the method 400 in fig. 4 and the method 600 in fig. 6.
Wherein, when the relay communication device 700 is configured to execute the method 400 in fig. 4, the transceiver unit 710 is configured to execute the step 404, the step 407, the step 408 and the step 410 in the method 400, and the processing unit 720 is configured to execute the step 406 and the step 409 in the method 400.
When the relay communication device 700 is configured to perform the method 600 in fig. 6, the transceiver unit 710 may be configured to perform the steps 605, 607, 608 and 610 in the method 600, and the processing unit 720 may be configured to perform the steps 606 and 609 in the method 600.
The processing unit 720 in the above embodiments may be implemented by at least one processor or processor-related circuitry. The transceiving unit 710 may be implemented by a transceiver or transceiver-related circuitry. The transceiving unit 710 may also be referred to as a communication unit or a communication interface. The storage unit may be implemented by at least one memory.
As shown in fig. 8, an embodiment of the present application further provides a relay communication apparatus 800. The relay communication device 800 comprises a processor 810, the processor 810 is coupled to a memory 820, the memory 820 is used for storing computer programs or instructions and/or data, and the processor 810 is used for executing the computer programs or instructions and/or data stored by the memory 820.
Optionally, the relay communication device 800 includes one or more processors 810.
Optionally, as shown in fig. 8, the communication apparatus 800 may further include a memory 820.
Optionally, the relay communication apparatus 800 may include one or more memories 820.
Alternatively, the memory 820 may be integrated with the processor 810 or separately provided.
As a solution, the relay communication apparatus 800 is configured to implement the operations performed by the first network element in the above method embodiments.
For example, the processor 810 is configured to implement the processing-related operations performed by the first network element in the above method embodiments.
Alternatively, the relay communication apparatus 800 is configured to implement the operations performed by the second network element in the above method embodiments.
For example, the processor 810 is configured to implement the processing-related operations performed by the second network element in the above method embodiments.
It should be noted that the above method embodiments of the present application may be applied to or implemented by a processor. The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.
It will be appreciated that the memory in the embodiments of the subject application 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 SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (31)

1. A relay communication method, comprising:
a first network element acquires the QoS requirement of a data stream of remote user equipment;
and the first network element sends a first candidate parameter set to a second network element according to the QoS requirement of the data stream, wherein the first candidate parameter set is used for determining a target QoS parameter set, and QoS parameters in the target QoS parameter set are used for transmitting the data stream between the relay user equipment and the user plane function network element.
2. The method of claim 1, wherein the first set of alternative parameters comprises at least one set of QoS parameters.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
the first network element sends a second alternative parameter set to the second network element according to the QoS requirement of the data stream; or,
the first network element sends a second candidate parameter set to the second network element according to the first candidate parameter set;
wherein the second set of candidate parameters is used to determine a target set of proximity services communication 5PC5 QoS parameters, a PC5QoS parameter of the target set of PC5QoS parameters being used to transmit the data flow between the relay user equipment and the remote user equipment.
4. The method of claim 3, wherein the second set of alternative parameters comprises at least one set of PC5QoS parameters.
5. The method according to claim 3 or 4, characterized in that the method further comprises:
the first network element sends the corresponding relation between the first QoS parameter set and the second QoS parameter set to the second network element, or the first network element sends the corresponding relation between the QoS parameters in the first QoS parameter set and the QoS parameters in the second QoS parameter set to the second network element;
the first set of QoS parameters belongs to the first set of candidate parameters, and the second set of QoS parameters belongs to the second set of candidate parameters.
6. The method according to any one of claims 1-5, further comprising:
and the first network element determines the first candidate parameter set according to the QoS requirement of the data flow.
7. The method of claim 6, wherein the determining, by the first network element, the first set of candidate parameters according to the QoS requirement of the data flow comprises:
and the first network element determines the first candidate parameter set according to the QoS requirement of the data stream and the information of the remote user equipment.
8. The method of claim 6, wherein the determining, by the first network element, the first set of candidate parameters according to the QoS requirement of the data flow comprises:
the first network element determines the first candidate parameter set according to the QoS requirement of the data stream and the subscription information of the remote user equipment; or
The first network element determines the first candidate parameter set according to the QoS requirement of the data stream and the subscription information of the relay user equipment; or
And the first network element determines the first alternative parameter set according to the QoS requirement of the data stream, the subscription information of the remote user equipment and the subscription information of the relay user equipment.
9. The method according to any of claims 1-8, wherein the first network element is a policy control function network element or a unified data management function network element, and the second network element is a session management function network element.
10. A relay communication method, comprising:
the second network element receives a first alternative parameter set from the first network element, wherein the first alternative parameter set is used for determining a target QoS parameter set, and QoS parameters in the target QoS parameter set are used for transmitting data streams of remote user equipment between the relay user equipment and the user plane function network element;
the second network element sends an alternative QoS configuration file to a Radio Access Network (RAN) node according to the first alternative parameter set, wherein the alternative QoS configuration file is used for the RAN node to determine and match the alternative QoS configuration file;
the second network element receives a matching alternative QoS configuration file from the RAN node, wherein the matching alternative QoS configuration file is a QoS configuration file met by the RAN node, and the matching alternative QoS configuration file belongs to the alternative QoS configuration file;
and the second network element sends PC5QoS parameters to the relay user equipment according to the matching candidate QoS configuration file, wherein the PC5QoS parameters are used for transmitting the data stream between the relay user equipment and the remote user equipment.
11. The method of claim 10, wherein the second network element sending the PC5QoS parameters to the relay user equipment according to the matching candidate QoS profile comprises:
the second network element determines the PC5QoS parameters according to the matched alternative QoS configuration file;
and the second network element sends the PC5QoS parameter to the relay user equipment.
12. The method of claim 11, wherein the determining, by the second network element, the PC5QoS parameter according to the matching candidate QoS profile comprises:
the second network element receives a second alternative parameter set from the first network element, wherein the second alternative parameter set comprises at least one PC5QoS parameter set;
and the second network element determines a target PC5QoS parameter set according to the second candidate parameter set and the matched candidate QoS configuration file, wherein the target PC5QoS parameter set comprises the PC5QoS parameters.
13. The method of claim 11, wherein the determining, by the second network element, the PC5QoS parameter according to the matching candidate QoS profile comprises:
the second network element receives a corresponding relationship between a first QoS parameter set and a second QoS parameter set from the first network element, or the second network element receives a corresponding relationship between QoS parameters in the first QoS parameter set and QoS parameters in the second QoS parameter set from the first network element, where the first QoS parameter set belongs to the first candidate parameter set and the second QoS parameter set belongs to the second candidate parameter set;
and the second network element determines the PC5QoS parameters according to the corresponding relation and the matched alternative QoS configuration file.
14. The method according to any of claims 1-13, wherein the first network element is a policy control function network element or a unified data management function network element, and the second network element is a session management function network element.
15. A relay communication apparatus, comprising:
a receiving and sending unit, configured to obtain a QoS requirement of a data flow of a remote user equipment;
the transceiver unit is further configured to send a first candidate parameter set to a second network element according to a QoS requirement of the data stream, where the first candidate parameter set is used to determine a target QoS parameter set, and a QoS parameter in the target QoS parameter set is used to transmit the data stream between the relay user equipment and the user plane function network element.
16. The relay communication device of claim 15, wherein the first set of alternative parameters comprises at least one set of QoS parameters.
17. The relay communication device according to claim 15 or 16, wherein the transceiver unit is further configured to transmit a second set of alternative parameters according to QoS requirements of the data flow;
or sending a second candidate parameter set according to the first candidate parameter set;
wherein the second set of alternative parameters is used to determine a target set of proximity services communication 5PC5 QoS parameters, of which PC5QoS parameters are used to transmit the data flow between the relay user equipment and the remote user equipment.
18. The relay communication device according to claim 17, wherein the second set of alternative parameters comprises at least one set of PC5QoS parameters.
19. The relay communication device according to claim 17 or 18, wherein the transceiving unit is further configured to send a correspondence between a first QoS parameter set and a second QoS parameter set, or a correspondence between QoS parameters in the first QoS parameter set and QoS parameters in the second QoS parameter set;
the first set of QoS parameters belongs to the first set of candidate parameters, and the second set of QoS parameters belongs to the second set of candidate parameters.
20. The relay communication device according to any one of claims 15 to 19, comprising:
and the processing unit is used for determining the first candidate parameter set according to the QoS requirement of the data flow.
21. The relay communication device according to claim 20, wherein the processing unit is specifically configured to determine the first candidate parameter set according to a QoS requirement of the data flow and identification information of the remote user equipment.
22. The relay communication device according to claim 20, wherein the processing unit is further configured to determine the first candidate parameter set according to a QoS requirement of the data flow and subscription information of the remote ue; or
The first candidate parameter set is determined according to the QoS requirement of the data stream and subscription information of the relay user equipment; or
And the second candidate parameter set is determined according to the QoS requirement of the data stream, the subscription information of the remote user equipment, and the subscription information of the relay user equipment.
23. The relay communication device according to any one of claims 15 to 22, wherein the first network element is a policy control function network element or a unified data management function network element, and the second network element is a session management function network element.
24. A relay communication apparatus, comprising:
a transceiving unit, configured to receive a first candidate parameter set from a first network element, where the first candidate parameter set is used to determine a target QoS parameter set, and a QoS parameter in the target QoS parameter set is used to transmit a data stream of a remote user equipment between a relay user equipment and a user plane function network element;
the transceiver unit is further configured to send an alternative QoS configuration file to a radio access network RAN node according to the first alternative parameter set, where the alternative QoS configuration file is used for the RAN node to determine to match an alternative QoS configuration file;
the transceiver unit is further configured to receive a matching alternative QoS profile from the RAN node, where the matching alternative QoS profile is a QoS profile that is satisfied by the RAN node, and the matching alternative QoS profile belongs to the alternative QoS profile;
the transceiver unit is further configured to send a PC5QoS parameter to the relay user equipment according to the matching candidate QoS profile, where the PC5QoS parameter is used to transmit the data stream between the relay user equipment and the remote user equipment.
25. The relay communication device according to claim 24, comprising:
and the processing unit is used for determining the PC5QoS parameters according to the matched alternative QoS configuration file.
26. The relay communication device according to claim 25, wherein said transceiver unit is specifically configured to receive a second set of alternative parameters from said first network element, said second set of alternative parameters comprising at least one PC5QoS parameter set;
the processing unit is specifically configured to determine a target PC5QoS parameter set according to the second candidate parameter set and the matching candidate QoS profile, where the target PC5QoS parameter set includes the PC5QoS parameters.
27. The relay communication device according to claim 25, wherein the transceiver unit is further configured to receive a correspondence between a first QoS parameter set and a second QoS parameter set from the first network element, or receive a correspondence between a QoS parameter in the first QoS parameter set and a QoS parameter in the second QoS parameter set from the first network element, where the first QoS parameter set belongs to the first candidate parameter set, and the second QoS parameter set belongs to the second candidate parameter set;
the processing unit is further configured to determine the PC5QoS parameter according to the correspondence and the matching candidate QoS profile.
28. The relay communication device according to any of claims 24 to 27, wherein the first network element is a policy control function network element or a unified data management function network element, and the second network element is a session management function network element.
29. A relay communication apparatus, comprising:
a processor for executing a computer program stored in a memory to cause the communication device to perform the communication method of any one of claims 1 to 28.
30. A computer-readable storage medium, having stored thereon a computer program which, when run on a computer, causes the computer to perform the communication method according to any one of claims 1 to 28.
31. A computer program product, characterized in that it comprises instructions for carrying out the communication method according to any one of claims 1 to 28.
CN202110428551.8A 2021-04-21 2021-04-21 Relay communication method and device Pending CN115226164A (en)

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EP3462795B1 (en) * 2017-10-02 2024-03-20 Apple Inc. Mobile communication system, user equipment, access node, transceiver, baseband circuitry, apparatus, method, and machine readable media and computer programs for processing baseband signals
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