WO2020169028A1

WO2020169028A1 - Configuration method for sidelink multicast communication, and terminal

Info

Publication number: WO2020169028A1
Application number: PCT/CN2020/075723
Authority: WO
Inventors: 郑倩; 杨晓东
Original assignee: 维沃移动通信有限公司
Priority date: 2019-02-18
Filing date: 2020-02-18
Publication date: 2020-08-27
Also published as: CN111436026A; CN111436026B

Abstract

Embodiments of the present invention provide a configuration method for sidelink multicast communication, and a terminal. The method comprises: sending configuration information of an access layer to a multicast group; and if one of the following conditions is satisfied, determining that configuration is successful: a timer times out; feedback information is received; the feedback information is received before the timer times out; feedback information of N group members is received; the feedback information of the N group members is received before the timer times out; feedback information of target group members is received; and the feedback information of the target group members is received before the timer times out; wherein N is a positive integer greater than or equal to 1 and less than or equal to the number of group members in the multicast group; the timer is started after sending the configuration information at the terminal; and the target group members are some or all of group members in the multicast group.

Description

Configuration method and terminal for secondary link multicast communication

Cross references to related applications

This application claims the priority of Chinese Patent Application No. 201910120312.9 filed in China on February 18, 2019, the entire content of which is incorporated herein by reference.

Technical field

The embodiments of the present disclosure relate to the field of wireless communication technology, and in particular, to a method and terminal for configuring a secondary link multicast communication.

Background technique

The following briefly introduces some content related to the secondary link (sidelink, or translated as side link, side link, etc.).

1. Introduction to Sidelink

The Long Term Evolution (LTE) system has supported sidelink since its 12th release, which is used to directly transmit data between user equipment (UE) without network equipment. Please refer to FIG. 1, which is an example diagram of uplink (Uplink), downlink (Downlink) and sidelink communication links in LTE in the related art. As can be seen from Figure 1, the terminal can communicate with network equipment through the uplink and downlink, or directly communicate with other terminals through the sidelink link.

The design of LTE sidelink is suitable for specific public safety affairs (such as emergency communication in fire sites or disaster sites such as earthquakes) or vehicle to everything (V2X) communications. IoV communications include various services, such as basic safety communications, advanced (automated) driving, formation, sensor expansion, and so on. Since LTE sidelink only supports broadcast communications, it is mainly used for basic security communications. Other advanced V2X services that have strict quality of service (QoS) requirements in terms of delay and reliability will be supported by NR sidelink.

The 5G NR system can be used in working frequency bands above 6GHz that LTE does not support, and supports larger working bandwidth. However, the current version of the NR system only supports the interface between the base station and the terminal, and does not yet support the Sidelink interface for direct communication between the terminals.

2. Transmission form of Sidelink

The current sidelink transmission mainly includes broadcast (broadcast), multicast (groupcast) and unicast (unicast) several transmission forms. Unicast, as its name implies, is one-to-one transmission. Multicast is one-to-many (one-to-many) transmission. Broadcasting is also one-to-many transmission, but broadcasting does not have the concept that UEs belong to the same group.

In sidelink multicast communication, when it is necessary to send access stratum (AS) configuration information to group members in a multicast group, if it is impossible to determine whether the configuration is successful, it will affect the reliability of resource allocation.

Summary of the invention

The embodiments of the present disclosure provide a configuration method and terminal for secondary link multicast communication, which are used to solve the problem that after sending access layer configuration information to group members in a multicast group, it is impossible to determine whether the configuration is successful, which affects the reliability of resource allocation. Sexual issues.

In order to solve the above technical problems, the present disclosure is implemented as follows:

In the first aspect, the embodiments of the present disclosure provide a method for configuring secondary link multicast communication, which is applied to a terminal, and includes:

Send the configuration information of the access layer to the multicast group;

If one of the following conditions is met, the configuration is determined to be successful:

The first timer expires;

Receiving feedback information for the configuration information;

Before the second timer expires, receiving feedback information for the configuration information;

Receiving feedback information for the configuration information sent by N group members;

Before the third timer expires, receiving feedback information for the configuration information sent by N group members;

Receiving feedback information for the configuration information sent by a member of the target group;

Before the fourth timer expires, receiving feedback information from the target group member for the configuration information;

Wherein, N is a positive integer greater than or equal to 1 and less than or equal to the number of group members in the multicast group;

The first timer is started after the terminal sends the configuration information;

The second timer is started after the terminal sends the configuration information;

The third timer is started after the terminal sends the configuration information;

The fourth timer is started after the terminal sends the configuration information;

The target group members are part or all of the group members in the multicast group.

The embodiment of the present disclosure provides a method for configuring a secondary link multicast communication, which is applied to a terminal, and includes:

If the configuration information for the access layer of the multicast group is received, feedback information is sent.

In the third aspect, embodiments of the present disclosure provide a terminal, including:

The sending module is used to send the configuration information of the access layer to the multicast group;

The first determining module is used to determine that the configuration is successful if one of the following conditions is met:

The first timer expires;

Receiving feedback information for the configuration information; before the second timer expires, receiving feedback information for the configuration information;

In a fourth aspect, embodiments of the present disclosure provide a terminal, including:

The feedback module is configured to send feedback information if the configuration information for the access layer of the multicast group is received.

In a fourth aspect, an embodiment of the present disclosure provides a terminal, including a processor, a memory, and a computer program stored on the memory and capable of running on the processor. When the computer program is executed by the processor, The steps of the method for configuring the above-mentioned secondary link multicast communication are realized.

In a fifth aspect, embodiments of the present disclosure provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the method for configuring the above-mentioned secondary link multicast communication is implemented A step of.

In the embodiment of the present disclosure, after sending the configuration information of the access layer to the group members in the multicast group, it is determined whether the configuration is successful, so as to ensure the reliability of resource allocation.

Description of the drawings

By reading the detailed description of the optional embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only used for the purpose of showing alternative embodiments, and are not considered as a limitation to the present disclosure. Also, throughout the drawings, the same reference symbols are used to denote the same components. In the attached picture:

Figure 1 is an example diagram of uplink, downlink and sidelink communication links in LTE in the related art;

2 is a schematic flowchart of a method for configuring a secondary link multicast communication in Embodiment 1 of the present disclosure;

3 is a schematic flowchart of a method for configuring a secondary link multicast communication according to the second embodiment of the disclosure;

4 is a schematic structural diagram of a terminal according to Embodiment 3 of the disclosure;

FIG. 5 is a schematic structural diagram of a terminal according to Embodiment 4 of the disclosure;

FIG. 6 is a schematic structural diagram of a terminal according to Embodiment 5 of the disclosure;

FIG. 7 is a schematic structural diagram of a terminal according to Embodiment 6 of the disclosure;

FIG. 8 is a schematic structural diagram of a terminal according to Embodiment 7 of the disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

The term "comprising" in the specification and claims of this application and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to clear Instead, those steps or units listed below may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment. In addition, the use of "and/or" in the specification and claims means at least one of the connected objects, such as A and/or B, which means that A and B alone are included, and there are three cases for both A and B.

In the embodiments of the present disclosure, words such as "exemplary" or "for example" are used as examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present disclosure should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner.

The following describes embodiments of the present disclosure in conjunction with the drawings. The method and terminal for configuring the secondary link multicast communication provided by the embodiments of the present disclosure can be applied to a wireless communication system. The wireless communication system may adopt a 5G system, or an evolved long-term evolution (evolved Long Term Evolution, eLTE) system, or a subsequent evolved communication system.

The terminal provided by the embodiment of the present disclosure may be a mobile phone, a tablet computer, a notebook computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, or a Personal Digital Assistant (PDA), etc. Those skilled in the art can understand that the terms used do not constitute a limitation.

Please refer to FIG. 2. FIG. 2 is a schematic flowchart of a configuration method of a secondary link multicast communication in Embodiment 1 of the present disclosure. The configuration method of the secondary link multicast communication is applied to a terminal, and the configuration method includes:

Step 21: Send the configuration information of the access layer to the multicast group;

Step 22: If one of the following conditions is met, it is determined that the configuration is successful:

The first timer expires;

Receiving feedback information for the configuration information;

Wherein, N is a positive integer greater than or equal to 1, and less than or equal to the number of group members in the multicast group;

In the embodiments of the present disclosure, after sending the configuration information of the access layer to the group members in the multicast group, it is determined whether the configuration is successful. When it is determined that the configuration is successful, subsequent related operations can be performed to ensure reliable resource allocation. Sex.

In the embodiment of the present disclosure, the timing duration of the first timer, the second timer, the third timer, and the fourth timer may all be the same (that is, the timing duration of the four timers are all the same), or All are different (that is, the timing duration of the four timers are different), or partly different (for example, the timing duration of the first timer and the second timer are the same, the timing duration of the third timer and the fourth timer are the same, but the timing duration of the The first timer and the second timer have different timing durations from the third timer and the fourth timer).

In some embodiments of the present disclosure, if the terminal does not obtain the number and/or identities of the group members in the multicast group, optionally, the condition for determining the successful configuration may be one of the following:

The first timer expires;

Receiving feedback information for the configuration information;

In some other embodiments of the present disclosure, if the terminal obtains the number of group members in the multicast group, optionally, the condition for determining successful configuration may be one of the following:

Before the third timer expires, the feedback information for the configuration information sent by the N group members is received.

In some other embodiments of the present disclosure, if the terminal obtains the identities of the group members in the multicast group, optionally, the condition for determining the successful configuration may be one of the following:

In some embodiments of the present disclosure, optionally, after sending the configuration information of the access layer to the multicast group, the method further includes: if one of the following conditions is met, determining that the configuration fails:

Not receiving feedback information for the configuration information;

Before the second timer expires, no feedback information for the configuration information is received;

N pieces of feedback information for the configuration information are not received;

Before the third timer expires, N pieces of feedback information for the configuration information are not received;

Not receiving the feedback information for the configuration information sent by the target group member;

Before the fourth timer expires, the feedback information for the configuration information sent by the target group member is not received.

In the embodiment of the present disclosure, optionally, the feedback information includes at least one of the following information: secondary link RRC layer feedback information, RLC layer feedback information, and HARQ feedback information.

In some embodiments of the present disclosure, optionally, the sending configuration information of the access layer to the multicast group includes:

Sending the configuration information to the multicast group through a secondary link radio resource control (Radio Resource Control, RRC) broadcast signaling;

and / or

If the terminal obtains the identity of at least one group member in the multicast group, it sends the configuration information to the at least one group member respectively through secondary link RRC unicast signaling.

The secondary link RRC broadcast signaling is sent through the PC5 interface, so it can also be called PC5-RRC broadcast signaling. The secondary link RRC broadcast signaling may be secondary link RRC reconfiguration signaling.

The secondary link RRC unicast signaling is sent through the PC5 interface, so it can also be called PC5-RRC unicast signaling. The secondary link RRC unicast signaling may be secondary link RRC reconfiguration signaling.

In some embodiments of the present disclosure, optionally, if the terminal does not obtain the identity of the group member in the multicast group, it needs to send the configuration to the multicast group through secondary link RRC broadcast signaling information. When sending the configuration information to the multicast group through the secondary link RRC broadcast signaling, the configuration information includes a set of common configuration information, and the common configuration information is available to all members in the multicast group. Used by group members. Optionally, the public configuration information includes secondary link radio resource configuration information and/or secondary link radio bearer high-level configuration information.

In some other embodiments of the present disclosure, optionally, if the terminal obtains the identity of at least one group member in the multicast group, it may send all the information to the multicast group through secondary link RRC broadcast signaling. When the configuration information is sent to the multicast group through secondary link RRC broadcast signaling, the configuration information includes at least one set of dedicated configuration information, wherein, in at least one group member, each of the The identities of the group members are associated with a set of the dedicated configuration information. Optionally, the dedicated configuration information includes secondary link radio resource configuration information.

In some other embodiments of the present disclosure, optionally, if the terminal obtains the identity of at least one group member in the multicast group, it may send all the information to the multicast group through secondary link RRC broadcast signaling. When the configuration information is sent to the multicast group via secondary link RRC broadcast signaling, the configuration information includes at least one set of dedicated configuration information and a set of public configuration information, wherein at least one group member Wherein, the identity of each group member is associated with a set of the dedicated configuration information, and the common configuration information is used by all group members in the multicast group. Optionally, the dedicated configuration information includes secondary link radio resource configuration information. Optionally, the public configuration information includes secondary link radio bearer high-level configuration information.

In some other embodiments of the present disclosure, optionally, if the terminal obtains the identity of at least one group member in the multicast group, it may send all the information to the multicast group through secondary link RRC broadcast signaling. When the configuration information is sent to the multicast group through secondary link RRC broadcast signaling, the configuration information may include a set of common configuration information, and the common configuration information is provided to the multicast group Used by all group members. Optionally, the public configuration information includes secondary link radio resource configuration information and/or secondary link radio bearer high-level configuration information.

In some other embodiments of the present disclosure, optionally, if the terminal obtains the identities of part of the group members in the multicast group, it may send to the part of the group members through the secondary link RRC unicast signaling. Dedicated configuration information, through the secondary link RRC broadcast signaling to send public configuration information to other group members.

The foregoing secondary link radio resource configuration information may include at least one of the following: secondary link radio resources used for data transmission and reception of the terminal and group members, used for hybrid automatic repeat request (HARQ) feedback Secondary link radio resources are used for channel state information (Channel State Information, CSI) measurement and reporting secondary link radio resources, etc.

The above-mentioned secondary link radio bearer high-level configuration may include at least one of the following: Service Data Adaptation Protocol (SDAP) configuration, Packet Data Convergence Protocol (PDCP) configuration, radio link control (Radio Link Control, RLC) configuration, media access control (Medium Access Control, MAC) configuration, etc.

In some embodiments of the present disclosure, if it is determined that the condition for the configuration failure includes: not receiving feedback information for the configuration information sent by the target group member, the method further includes: if the terminal does not receive the first target The feedback information sent by the member group re-sends the configuration information to the first target group members, and the first target group members are part or all of the target members. Optionally, the configuration information is sent to the multicast group through secondary link RRC broadcast signaling; or, the configuration information is sent to each member of the first target group through secondary link RRC unicast signaling. information.

Please refer to FIG. 3. FIG. 3 is a method for configuring a secondary link multicast communication of the present disclosure, which is applied to a terminal and includes:

Step 31: If the configuration information for the access layer of the multicast group is received, send feedback information.

In some embodiments of the present disclosure, optionally, if the configuration information is sent through secondary link RRC broadcast signaling:

The terminal demodulates the secondary link RRC broadcast signaling according to the identifier of the multicast group, and then sends feedback information; or

The terminal demodulates the secondary link RRC broadcast signaling according to the identifier of the multicast group, and the configuration information includes its own identifier, and then sends feedback information.

In some embodiments of the present disclosure, optionally, if the configuration information is sent through secondary link RRC unicast signaling and the terminal demodulates the configuration information according to its own identity or group identity in combination with its own identity, Send feedback information.

Optionally, the feedback information includes at least one of the following information: secondary link RRC layer feedback information, RLC layer feedback information, and HARQ feedback information.

The configuration method of the secondary link multicast communication in the above embodiment can be applied to V2X. At present, in V2X, vehicles for multicast communication have the roles of leader and non-leader. Among the resource scheduling methods for group members in a multicast group, there is a scheduling method for the leader to uniformly schedule resources, that is In other words, not only the sidelink resources of the leader and group members are allocated by the leader, but the sidelink resources between the group members and the group members are also allocated by the leader. For platforming (platooning) fleet multicast communication, if the resource scheduling is allocated by the leader, when the configuration information of the access layer needs to be sent to multiple group members of the multicast communication, how to determine whether the configuration is successful needs to be considered Problem, in the embodiment of the present disclosure, the terminal used to perform the configuration method of the secondary link multicast communication may be the terminal corresponding to the leader, and the terminal corresponding to the leader is sending access to the group members in the multicast group. After the configuration information of the layer, determine whether the configuration is successful, thereby ensuring the reliability of resource allocation.

The following is an example for the configuration method for V2X secondary link multicast communication.

Application scenario one of the embodiment of the present disclosure: In the embodiment of the present disclosure, the leader vehicle (the terminal corresponding to the leader vehicle) does not obtain the number and identity of the group members in the multicast group

The configuration method of the secondary link multicast communication in the embodiment of the present disclosure includes:

Step 41: The leader broadcasts the configuration information of the access layer to the multicast group;

The configuration information may be sent through secondary link RRC broadcast signaling;

Step 42: If a group member (referring to a terminal corresponding to the group member) demodulates the secondary link RRC broadcast signaling according to the identifier of the multicast group, send feedback information for the configuration information;

The secondary link RRC broadcast signaling may be secondary link RRC reconfiguration signaling, and the feedback information may be sent through secondary link RRC reconfiguration completion signaling.

Step 43: When the leader judges that one of the following conditions is met, it is determined that the configuration is successful;

1) Receive feedback information for the configuration information;

2) The first timer expires, and the first timer is started after the terminal sends the configuration information.

3) Before the second timer expires, the feedback information for the configuration information is received, and the second timer is started after the terminal sends the configuration information.

Step 44: If the foregoing conditions include receiving feedback information for the configuration information, when the leader determines that one of the following conditions is met, it is determined that the configuration has failed:

1) No feedback information for the configuration information is received;

2) Before the second timer expires, no feedback information for the configuration information is received.

Application scenario two of the embodiment of the present disclosure: In the embodiment of the present disclosure, the leader obtains the identities of the group members in the multicast group

Step 51: Using one of the following methods, the leader sends the configuration information of the access layer to the multicast group;

1) The leader broadcasts the configuration information of the access layer to the multicast group; the configuration information can be sent through the secondary link RRC broadcast signaling.

a) If the leader obtains the identification of at least one group member in the multicast group, the configuration information may also include at least one set of dedicated configuration information, wherein, in at least one group member, each of the group members The member's identity is associated with a set of the dedicated configuration information.

The dedicated configuration information may include secondary link radio resource configuration information.

The secondary link wireless resource configuration information may include, for example, at least one of the following: secondary link wireless resources used for data transmission and reception of the leader and group members, secondary link wireless resources used for HARQ feedback, and secondary link used for CSI measurement reporting. Link wireless resources, etc.

b) The configuration information may also include a set of common configuration information. The common configuration information is not associated with any group member identifiers and belongs to the common configuration of the multicast group where it belongs.

The public configuration information may include high-level configuration of the secondary link radio bearer.

The secondary link radio bearer high-level configuration may include, for example, at least one of the following: SDAP configuration, PDCP configuration, RLC configuration, MAC configuration, and so on.

2) If the lead vehicle obtains the identification of at least one group member in the multicast group, the lead vehicle sends the configuration information to the at least one group member respectively through secondary link RRC unicast signaling.

Step 52: The group members in the multicast group use one of the following methods to receive the configuration information sent by the leader:

For the first) sending mode, if the group member demodulates the secondary link RRC broadcast signaling according to the multicast group identifier, send feedback information for the configuration information;

For the second) sending mode, if the group member demodulates the secondary link RRC unicast signaling according to its own identity or the group identity combined with its own identity, then send feedback information for the configuration information;

Step 53: When the leader judges that one of the following conditions is met, it is determined that the configuration is successful;

1) Receive feedback information for the configuration information sent by N group members;

2) Receive feedback information for the configuration information sent by the target group member;

3) Before the third timer expires, receiving feedback information for the configuration information sent by N group members;

4) Before the fourth timer expires, receiving feedback information for the configuration information sent by the target group member;

Where N is a positive integer, greater than or equal to 1, and less than or equal to the number of group members in the multicast group.

Step 54: When the leader judges that the condition is not met, it is determined that the configuration fails.

Based on the same inventive concept, please refer to FIG. 4. An embodiment of the present disclosure further provides a terminal 400, including:

The sending module 401 is used to send the access layer configuration information to the multicast group;

The first determining module 402 is configured to determine that the configuration is successful if one of the following conditions is met:

The first timer expires;

Receiving feedback information for the configuration information;

Optionally, the terminal 400 further includes:

The second determining module is configured to, after sending the configuration information of the access layer to the multicast group, further includes:

If one of the following conditions is met, the configuration is determined to fail:

Not receiving feedback information for the configuration information;

Optionally, the sending module 401 includes:

The first sending submodule is configured to send the configuration information to the multicast group through secondary link RRC broadcast signaling; and/or

The second sending submodule is configured to send the configuration information to the at least one group member respectively through secondary link RRC unicast signaling if the terminal obtains the identity of at least one group member in the multicast group.

Optionally, if the terminal does not obtain the identity of the group member in the multicast group and sends the configuration information to the multicast group through secondary link RRC broadcast signaling, the configuration information includes a A set of common configuration information, where the common configuration information is used by all group members in the multicast group.

Optionally, the public configuration information includes secondary link radio resource configuration information and/or secondary link radio bearer high-level configuration information.

Optionally, if the terminal obtains the identity of at least one group member in the multicast group and sends the configuration information to the multicast group through secondary link RRC broadcast signaling,

The configuration information includes at least one set of dedicated configuration information, wherein in at least one group member, the identification of each group member is associated with one set of the dedicated configuration information; and/or

The configuration information includes a set of common configuration information, and the common configuration information is used by all group members in the multicast group.

Optionally, the dedicated configuration information includes secondary link radio resource configuration information.

Optionally, the public configuration information includes secondary link radio bearer high-level configuration information.

Optionally, if it is determined that the condition for configuration failure includes: not receiving feedback information for the configuration information sent by the target group member, the method further includes:

The sending module is configured to resend the configuration information to the first target group member if the terminal does not receive the feedback information sent by the first target group member, and the first target group member is the target Some or all of the members.

Optionally, the sending module is configured to send the configuration information to the multicast group through secondary link RRC broadcast signaling; or, to each of the first target groups through secondary link RRC unicast signaling The members send the configuration information respectively.

The terminal provided in the embodiment of the present disclosure can implement the various processes implemented by the terminal in the method embodiment shown in FIG. 2. To avoid repetition, details are not described herein again.

Referring to FIG. 5, an embodiment of the present disclosure further provides a terminal 500, including:

The feedback module 501 is configured to send feedback information if the configuration information for the access layer of the multicast group is received.

Optionally, if the configuration information is sent through secondary link RRC broadcast signaling:

The feedback module 501 is used for the terminal to demodulate the secondary link RRC broadcast signaling according to the identifier of the multicast group, and then send feedback information; or

The feedback module 501 is configured to demodulate the secondary link RRC broadcast signaling to the secondary link according to the identifier of the multicast group, and send feedback information when the configuration information includes its own identifier.

Optionally, the feedback module 501 is configured to, if the configuration information is sent via secondary link RRC unicast signaling and the terminal demodulates the configuration information according to its own identity or group identity in combination with its own identity, Send feedback information.

The terminal provided in the embodiment of the present disclosure can implement each process implemented by the terminal in the method embodiment shown in FIG. 3, and to avoid repetition, details are not described herein again.

Please refer to FIG. 6, which is a schematic structural diagram of a terminal according to another embodiment of the present disclosure. The terminal 600 includes but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, and a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 6010, a power supply 6011 and other components. Those skilled in the art can understand that the terminal structure shown in FIG. 6 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange different components. In the embodiments of the present disclosure, terminals include, but are not limited to, mobile phones, tablet computers, notebook computers, palmtop computers, vehicle-mounted terminals, wearable devices, and pedometers.

Wherein, the radio frequency unit 601 is used to send configuration information of the access layer to the multicast group;

The processor 6010 is configured to determine that the configuration is successful if one of the following conditions is met:

The first timer expires;

Receiving feedback information for the configuration information;

or,

The processor 6010 is configured to send feedback information if the configuration information for the access layer of the multicast group is received.

It should be understood that, in the embodiment of the present disclosure, the radio frequency unit 601 can be used for receiving and sending signals in the process of sending and receiving information or talking. Specifically, after receiving downlink data from the base station, it is processed by the processor 6010; Uplink data is sent to the base station. Generally, the radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 601 can also communicate with the network and other devices through a wireless communication system.

The terminal provides users with wireless broadband Internet access through the network module 602, such as helping users to send and receive emails, browse web pages, and access streaming media.

The audio output unit 603 can convert the audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into audio signals and output them as sounds. Moreover, the audio output unit 603 may also provide audio output related to a specific function performed by the terminal 600 (for example, call signal reception sound, message reception sound, etc.). The audio output unit 603 includes a speaker, a buzzer, a receiver, and the like.

The input unit 604 is used to receive audio or video signals. The input unit 604 may include a graphics processing unit (GPU) 6041 and a microphone 6042, and the graphics processor 60101 is used to capture images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed. The processed image frame may be displayed on the display unit 606. The image frame processed by the graphics processor 60101 may be stored in the memory 609 (or other storage medium) or sent via the radio frequency unit 601 or the network module 602. The microphone 60602 can receive sound and can process such sound into audio data. The processed audio data can be converted into a format that can be sent to the mobile communication base station via the radio frequency unit 601 for output in the case of a telephone call mode.

The terminal 600 also includes at least one sensor 605, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 6061 according to the brightness of the ambient light. The proximity sensor can close the display panel 6061 and/or when the terminal 600 is moved to the ear. Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify terminal posture (such as horizontal and vertical screen switching, related games, Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, percussion), etc.; sensor 605 can also include fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared Sensors, etc., will not be repeated here.

The display unit 606 is used to display information input by the user or information provided to the user. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.

The user input unit 607 may be used to receive inputted number or character information, and generate key signal input related to user settings and function control of the terminal. Specifically, the user input unit 607 includes a touch panel 6071 and other input devices 6072. The touch panel 6071, also known as a touch screen, can collect user touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 6071 or near the touch panel 6071. operating). The touch panel 6071 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it The processor 6010 receives and executes the commands sent by the processor 6010. In addition, the touch panel 6071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 6071, the user input unit 607 may also include other input devices 6072. Specifically, other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.

Further, the touch panel 6071 can cover the display panel 6061. When the touch panel 6071 detects a touch operation on or near it, it transmits it to the processor 6010 to determine the type of the touch event. The type of event provides corresponding visual output on the display panel 6061. Although in FIG. 6, the touch panel 6071 and the display panel 6061 are used as two independent components to realize the input and output functions of the terminal, in some embodiments, the touch panel 6071 and the display panel 6061 can be integrated. Realize the input and output functions of the terminal, which are not limited here.

The interface unit 608 is an interface for connecting an external device with the terminal 600. For example, the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc. The interface unit 608 can be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the terminal 600 or can be used to communicate between the terminal 600 and the external device. transfer data.

The memory 609 can be used to store software programs and various data. The memory 609 may mainly include a storage program area and a storage data area. The storage program area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data (such as audio data, phone book, etc.) created by the use of mobile phones. In addition, the memory 609 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

The processor 6010 is the control center of the terminal. It uses various interfaces and lines to connect various parts of the entire terminal. It executes by running or executing software programs and/or modules stored in the memory 609, and calling data stored in the memory 609. Various functions of the terminal and processing data, so as to monitor the terminal as a whole. The processor 6010 may include one or more processing units; optionally, the processor 6010 may integrate an application processor and a modem processor. The application processor mainly processes the operating system, user interface, and application programs, etc. The adjustment processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 6010.

The terminal 600 may also include a power supply 6011 (such as a battery) for supplying power to various components. Optionally, the power supply 6011 may be logically connected to the processor 6010 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. And other functions.

In addition, the terminal 600 includes some functional modules not shown, which will not be repeated here.

Please refer to FIG. 7, which is a schematic structural diagram of a terminal according to another embodiment of the present disclosure. The terminal 700 includes a processor 701 and a memory 702. In the embodiment of the present disclosure, the terminal 700 further includes: a computer program stored in the memory 702 and capable of running on the processor 701. When the computer program is executed by the processor 701, the following steps are implemented:

Send the configuration information of the access layer to the multicast group;

The first timer expires;

Receiving feedback information for the configuration information;

The processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 can store data used by the processor 701 when performing operations.

Optionally, the following steps may be implemented when the computer program is executed by the processor 701:

After sending the configuration information of the access layer to the multicast group, the method further includes:

Not receiving feedback information for the configuration information;

The sending configuration information of the access layer to the multicast group includes:

Sending the configuration information to the multicast group via secondary link RRC broadcast signaling; and/or

If the terminal does not receive the feedback information sent by the first target member group, resend the configuration information to the first target group member, and the first target group member is part or all of the target members.

Optionally, send the configuration information to the multicast group through secondary link RRC broadcast signaling; or

The configuration information is sent to each member of the first target group respectively through secondary link RRC unicast signaling.

Please refer to FIG. 8, which is a schematic structural diagram of a terminal according to another embodiment of the present disclosure. The terminal 800 includes a processor 801 and a memory 802. In the embodiment of the present disclosure, the terminal 800 further includes: a computer program stored in the memory 802 and capable of running on the processor 801. When the computer program is executed by the processor 801, the following steps are implemented: if an interface for a multicast group is received Enter the configuration information of the layer, then send feedback information.

Optionally, the following steps may be implemented when the computer program is executed by the processor 801:

If the configuration information is sent through secondary link RRC broadcast signaling:

If the configuration information is sent through secondary link RRC unicast signaling and the terminal demodulates the configuration information according to its own identity or group identity in combination with its own identity, the feedback information is sent.

The embodiments of the present disclosure also provide a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, each of the embodiments of the method for configuring the sub-link multicast communication is realized. Process, and can achieve the same technical effect, in order to avoid repetition, I will not repeat it here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article or device that includes the element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be achieved by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of the present disclosure essentially or the part that contributes to the related technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk). ) Includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present disclosure.

The embodiments of the present disclosure are described above with reference to the accompanying drawings, but the present disclosure is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present disclosure, many forms can be made without departing from the purpose of the present disclosure and the scope of protection of the claims, all of which fall within the protection of the present disclosure.

Claims

A configuration method for secondary link multicast communication, applied to a terminal, includes:

Send the configuration information of the access layer to the multicast group;

If one of the following conditions is met, the configuration is determined to be successful:

The first timer expires;

Receiving feedback information for the configuration information;

Before the second timer expires, receiving feedback information for the configuration information;

Receiving feedback information for the configuration information sent by N group members;

Before the third timer expires, receiving feedback information for the configuration information sent by N group members;

Receiving feedback information for the configuration information sent by a member of the target group;

Before the fourth timer expires, receiving feedback information from the target group member for the configuration information;

Wherein, N is a positive integer greater than or equal to 1 and less than or equal to the number of group members in the multicast group;

The first timer is started after the terminal sends the configuration information;

The second timer is started after the terminal sends the configuration information;

The third timer is started after the terminal sends the configuration information;

The fourth timer is started after the terminal sends the configuration information;

The target group members are part or all of the group members in the multicast group.
The method of claim 1, wherein:

The feedback information includes at least one of the following information: secondary link RRC layer feedback information, RLC layer feedback information, and HARQ feedback information.
The method according to claim 1, wherein after said sending the configuration information of the access layer to the multicast group, the method further comprises:

If one of the following conditions is met, the configuration is determined to fail:

Not receiving feedback information for the configuration information;

Before the second timer expires, no feedback information for the configuration information is received;

N pieces of feedback information for the configuration information are not received;

Before the third timer expires, N pieces of feedback information for the configuration information are not received;

Not receiving the feedback information for the configuration information sent by the target group member;

Before the fourth timer expires, the feedback information for the configuration information sent by the target group member is not received.
The method according to claim 1, wherein said sending configuration information of the access layer to the multicast group comprises:

Sending the configuration information to the multicast group via secondary link RRC broadcast signaling; and/or

If the terminal obtains the identity of at least one group member in the multicast group, it sends the configuration information to the at least one group member respectively through secondary link RRC unicast signaling.
The method of claim 4, wherein:

If the terminal does not obtain the identity of the group member in the multicast group, when sending the configuration information to the multicast group through secondary link RRC broadcast signaling, the configuration information includes a set of common configuration information , The public configuration information is used by all group members in the multicast group.
The method according to claim 5, wherein the common configuration information includes secondary link radio resource configuration information and/or secondary link radio bearer high-level configuration information.
The method according to claim 4, wherein if the terminal obtains the identity of at least one group member in the multicast group, and sends the configuration information to the multicast group through a secondary link RRC broadcast signaling ,

The configuration information includes at least one set of dedicated configuration information, wherein in at least one group member, the identification of each group member is associated with one set of the dedicated configuration information; and/or

The configuration information includes a set of common configuration information, and the common configuration information is used by all group members in the multicast group.
The method according to claim 7, wherein the dedicated configuration information includes secondary link radio resource configuration information.
8. The method according to claim 7, wherein the common configuration information includes secondary link radio bearer high-level configuration information.
The method of claim 3, wherein if it is determined that the configuration fails, the condition includes:

The feedback information for the configuration information sent by the target group member is not received, and the method further includes:

If the terminal does not receive the feedback information sent by the first target member group, resend the configuration information to the first target group member, and the first target group member is part or all of the target members.
The method of claim 10, wherein:

Sending the configuration information to the multicast group through secondary link RRC broadcast signaling; or

The configuration information is sent to each member of the first target group respectively through secondary link RRC unicast signaling.
A configuration method for secondary link multicast communication, applied to a terminal, includes:

If the configuration information for the access layer of the multicast group is received, feedback information is sent.
The method of claim 12, wherein:

If the configuration information is sent through secondary link RRC broadcast signaling:

The terminal demodulates the secondary link RRC broadcast signaling according to the identifier of the multicast group, and then sends feedback information; or

The terminal demodulates the secondary link RRC broadcast signaling according to the identifier of the multicast group, and the configuration information includes its own identifier, then sends feedback information.
The method of claim 12, wherein:

If the configuration information is sent through secondary link RRC unicast signaling and the terminal demodulates the configuration information according to its own identity or group identity in combination with its own identity, the feedback information is sent.
The method of claim 12, wherein:

The feedback information includes at least one of the following information: secondary link RRC layer feedback information, RLC layer feedback information, and HARQ feedback information.
A terminal, including:

The sending module is used to send the configuration information of the access layer to the multicast group;

The first determining module is used to determine that the configuration is successful if one of the following conditions is met:

The first timer expires;

Receiving feedback information for the configuration information;

Before the second timer expires, receiving feedback information for the configuration information;

Receiving feedback information for the configuration information sent by N group members;

Before the third timer expires, receiving feedback information for the configuration information sent by N group members;

Receiving feedback information for the configuration information sent by a member of the target group;

Before the fourth timer expires, receiving feedback information from the target group member for the configuration information;

Wherein, N is a positive integer greater than or equal to 1 and less than or equal to the number of group members in the multicast group;

The first timer is started after the terminal sends the configuration information;

The second timer is started after the terminal sends the configuration information;

The third timer is started after the terminal sends the configuration information;

The fourth timer is started after the terminal sends the configuration information;

The target group members are part or all of the group members in the multicast group.
A terminal, including:

The feedback module is configured to send feedback information if the configuration information for the access layer of the multicast group is received.
A terminal, comprising a processor, a memory, and a computer program stored on the memory and capable of running on the processor. The computer program is executed by the processor to implement any one of claims 1 to 15 The steps of the method for configuring the multicast communication of the secondary link described in the item.
A computer-readable storage medium storing a computer program on the computer-readable storage medium, and when the computer program is executed by a processor, it realizes the sub-link multicast communication according to any one of claims 1 to 15 The steps of the configuration method.