State conversion method and link state MTCH indication method, device, storage medium, terminal, base station

Abstract

A state conversion method and a method, device, storage medium, terminal, and base station for indicating a linked MTCH, wherein the state conversion method comprises: if data transmitted by a linked MTCH is received, starting or restarting a data inactive timer, wherein the linked MTCH refers to an MTCH that the terminal needs to maintain in an RRC linked state for reception; if the data inactive timer expires, converting the state from the RRC linked state to the idle state. The solution of the present invention enables the UE to perform state conversion more reasonably to avoid affecting the reception of MBS services.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a state conversion method and a method, device, storage medium, terminal, and base station for indicating a linked MTCH. Background Art

[0002] For Multicast and Broadcast Services (MBS), recent protocol discussions indicate that in the future there may be MBS services that can only be received in the Radio Resource Control (RRC) connection state. If such MBS services exist, even in the absence of unicast service data transmission, the User Equipment (UE) cannot be switched from the RRC connection state to the idle state.

[0003] In the Long Term Evolution (LTE) system, the reception of MBS services will not be affected by the RRC state of the UE. The UE can receive MBS services even in the idle state, so the above problem will not occur. This also leads to the fact that the existing technology has no solution to deal with the UE having to maintain the RRC connection state during the transmission of MBS services. In fact, based on the existing technology, as long as the UE does not receive unicast data for more than a certain period of time, it will switch to the idle state. If the UE is currently performing an MBS service that must be in the RRC connection state, it will inevitably lead to the failure of the MBS service and affect the UE performance. Summary of the invention

[0004] The technical problem solved by the present invention is how to perform UE state conversion more reasonably to avoid affecting the reception of MBS services.

[0005] To solve the above technical problems, an embodiment of the present invention provides a state transition method, including: if data transmitted by a linked state MTCH is received, starting or restarting a data inactivity timer, wherein the linked state MTCH refers to an MTCH that the terminal needs to maintain in an RRC linked state for reception; if the data inactivity timer expires, converting the state from the RRC linked state to the idle state.

[0006] Optionally, the received data transmitted by the link-state MTCH includes: a MAC entity corresponding to the link-state MTCH receives a MAC SDU transmitted by the link-state MTCH.

[0007] Optionally, converting the state from the RRC linked state to the idle state includes: releasing the RRC link.

[0008] Optionally, the release reason includes RRC connection failure.

[0009] To solve the above technical problems, an embodiment of the present invention also provides a state transition method, including: if the data inactivation timer expires and there is no need to receive data transmitted by the linked state MTCH, the state is converted from the RRC linked state to the idle state; wherein the linked state MTCH refers to the MTCH that the terminal needs to maintain in the RRC linked state for reception.

[0010] Optionally, the reception requirement for data transmitted by the link state MTCH includes: currently receiving the data transmitted by the link state MTCH, and preparing to receive the data transmitted by the link state MTCH.

[0011] Optionally, the data transmitted by the link-state MTCH is transmitted periodically, and the preparation for receiving the data transmitted by the link-state MTCH refers to preparing to receive the data transmitted by the link-state MTCH in the next nearest transmission period.

[0012] Optionally, the MTCH is used to carry MBS services.

[0013] Optionally, the linked state MTCH includes at least: an MTCH configured with an indication of supporting HARQ or configured with HARQ configuration information.

[0014] Optionally, the state transition method further includes: receiving indication information, wherein the indication information is used to indicate whether the configured MTCH is a linked state MTCH; and / or determining whether the MTCH is a linked state MTCH according to received configuration information of the MTCH.

[0015] To solve the above technical problem, an embodiment of the present invention further provides a method for indicating a linked MTCH, comprising: for a linked MTCH, sending reception configuration information of the linked MTCH to indicate that a terminal needs to remain in an RRC linked state to receive the linked MTCH.

[0016] Optionally, sending the reception configuration information of the linked-state MTCH to indicate that the terminal needs to remain in the RRC linked state to receive the linked-state MTCH includes: indicating that the terminal needs to remain in the RRC linked state to receive the linked-state MTCH through an indication of supporting HARQ configured in the reception configuration information.

[0017] Optionally, sending the reception configuration information of the linked-state MTCH to indicate that the terminal needs to remain in the RRC linked state to receive the linked-state MTCH includes: indicating that the terminal needs to remain in the RRC linked state to receive the linked-state MTCH through the HARQ configuration information of the MTCH configured in the reception configuration information.

[0018] Optionally, the sending of the reception configuration information of the linked-state MTCH to indicate that the terminal needs to remain in the RRC linked state to receive the linked-state MTCH includes: receiving RRC status information contained in the reception configuration information, and the receiving RRC status information only includes the RRC linked state to indicate that the terminal needs to remain in the RRC linked state to receive the linked-state MTCH, wherein the receiving RRC status information is used to indicate the RRC state required for receiving data transmitted by the MTCH.

[0019] Optionally, the received RRC status information only includes the RRC link state, including: indicating through a bitmap that the received RRC status information of the link state MTCH only includes the RRC link state.

[0020] Optionally, the sending of the reception configuration information of the linked MTCH includes: sending the reception configuration information via system information or MCCH.

[0021] To solve the above technical problems, an embodiment of the present invention also provides a state conversion device, including: a start module, which starts or restarts a data inactivity timer if data transmitted by a linked state MTCH is received, wherein the linked state MTCH refers to an MTCH that the terminal needs to maintain in an RRC linked state for reception; a conversion module, which converts the state from the RRC linked state to the idle state if the data inactivity timer expires.

[0022] To solve the above technical problems, an embodiment of the present invention also provides a state conversion device, including: a conversion module, if the data inactivation timer expires and there is no need to receive data transmitted in the linked state MTCH, the state is converted from the RRC linked state to the idle state, wherein the linked state MTCH refers to the MTCH that the terminal needs to maintain in the RRC linked state for reception.

[0023] To solve the above technical problems, an embodiment of the present invention further provides an indication device for a linked MTCH, comprising: a sending module, for a linked MTCH, sending reception configuration information of the linked MTCH to indicate that a terminal needs to remain in an RRC linked state to receive the linked MTCH.

[0024] In order to solve the above technical problem, an embodiment of the present invention further provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the above method are executed.

[0025] To solve the above technical problem, an embodiment of the present invention further provides a terminal, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of the above state transition method when running the computer program.

[0026] To solve the above technical problems, an embodiment of the present invention further provides a base station, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of the above-mentioned method for indicating the linked state MTCH when running the computer program.

[0027] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0028] For the user equipment side, an embodiment of the present invention provides a state transition method, including: if data transmitted by a linked state MTCH is received, starting or restarting a data inactivity timer, wherein the linked state MTCH refers to an MTCH that the terminal needs to maintain in an RRC linked state for reception; if the data inactivity timer expires, converting the state from the RRC linked state to the idle state.

[0029] By adopting the solution of this embodiment, the UE can perform state transition more reasonably to avoid affecting the reception of MBS services. Specifically, the data inactivity timer is timely set or reset by monitoring the data transmission on the linked MTCH. As a result, the data inactivity timer can always remain in a non-timeout state during the MBS service transmission, ensuring that the UE will not switch to the idle state when the MBS service is not completed.

[0030] For the user equipment side, an embodiment of the present invention also provides a state transition method, including: if the data inactivation timer expires and there is no need to receive data transmitted by the linked state MTCH, the state is converted from the RRC linked state to the idle state; wherein the linked state MTCH refers to the MTCH that the terminal needs to maintain in the RRC linked state for reception.

[0031] By adopting the solution of this embodiment, the UE can perform state transition more reasonably to avoid affecting the reception of MBS services. Specifically, when the timer expires, before executing the state transition operation, it is determined whether there is a need to receive data transmitted by the linked MTCH. Therefore, by adding a pre-judgment logic before executing the state transition operation, it is ensured that the UE can still remain in the RRC linked state when the timer expires but there is a need to receive data transmitted by the linked MTCH.

[0032] For the network side, an embodiment of the present invention further provides a method for indicating a linked MTCH, comprising: for a linked MTCH, sending reception configuration information of the linked MTCH to indicate that a terminal needs to remain in an RRC linked state to receive the linked MTCH.

[0033] By adopting the scheme of this embodiment, the network indicates whether the MTCH configured to the UE is a linked MTCH by receiving configuration information, so that the UE determines whether the RRC linked state must be maintained during the reception of data on the configured MTCH. Further, the UE that receives the reception configuration information can execute the above-mentioned state transition method to accurately control the switching of its own state when the configured MTCH is a linked MTCH, so as to avoid affecting its own reception of MBS services. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a flow chart of a first state transition method according to an embodiment of the present invention;

[0035] Figure 2 is a flow chart of a second state transition method according to an embodiment of the present invention;

[0036] Figure 3 It is a flow chart of a method for indicating a link-state MTCH according to an embodiment of the present invention;

[0037] Figure 4 It is a structural schematic diagram of a first state conversion device according to an embodiment of the present invention;

[0038] Figure 5 is a schematic diagram of the structure of a second state conversion device according to an embodiment of the present invention;

[0039] Figure 6 It is a structural diagram of a link-state MTCH indication device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0040] As mentioned in the background art, the prior art does not have a solution to the problem that the UE must maintain the RRC connection state during MBS service transmission. If the UE unicasts service data during MBS service transmission, the UE will switch to the idle state, resulting in failure to receive the MBS service.

[0041] To solve the above technical problems, an embodiment of the present invention provides a state transition method, including: if data transmitted by a linked state MTCH is received, starting or restarting a data inactivity timer, wherein the linked state MTCH refers to an MTCH that the terminal needs to maintain in an RRC linked state for reception; when the data inactivity timer expires, converting the state from the RRC linked state to the idle state.

[0042] By adopting the solution of this embodiment, the UE can perform state transition more reasonably to avoid affecting the reception of MBS services. Specifically, the data inactivity timer is timely set or reset by monitoring the data transmission on the linked MTCH. As a result, the data inactivity timer can always remain in a non-timeout state during the MBS service transmission, ensuring that the UE will not switch to the idle state when the MBS service is not completed.

[0043] In order to make the above-mentioned objects, features and beneficial effects of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0044] Figure 1 It is a flow chart of the first state transition method of an embodiment of the present invention.

[0045] This implementation can be executed by the user equipment side, such as by the UE on the user equipment side. The UE executing this implementation is configured with a data inactivity timer. If the data inactivity timer times out, the UE enters an idle state.

[0046] This implementation scheme can be applied to scenarios where MBS services exist, such as when the UE is receiving data in a logical channel that carries MBS service data. The logical channel that carries MBS service data for multicast or broadcast in the cell can be defined as a multicast traffic channel (MTCH for short), and the MTCH from which the UE can receive data only in the RRC linked state can be defined as a linked state MTCH.

[0047] Specifically, refer to Figure 1 The state conversion method described in this embodiment may include the following steps:

[0048] Step S101, if data transmitted by a linked MTCH is received, start or restart a data inactivity timer, wherein the linked MTCH refers to an MTCH that the terminal needs to maintain in an RRC linked state for reception;

[0049] Step S102: If the data inactivity timer expires, the state is converted from the RRC connection state to the idle state.

[0050] In a specific implementation, the UE may be configured with one or more Medium Access Control (MAC) entities, wherein each MAC entity is responsible for data processing of one or more logical channels.

[0051] Accordingly, the step S101 may include the step of: the MAC entity corresponding to the linked-state MTCH receives the MAC service data unit (MAC Service Data Unit, MAC SDU for short) transmitted by the linked-state MTCH.

[0052] In a specific implementation, in addition to the linked MTCH, if there is data transmission on other logical channels, it may also trigger the start or restart of the data inactivity timer.

[0053] For example, the other logical channels may include: dedicated traffic channel (DTCH); dedicated control channel (DCCH); common control channel (CCCH). These logical channels may correspond to the same MAC entity or to different MAC entities.

[0054] Accordingly, the step S101 may include the step of: if any MAC entity of the UE receives a MAC SDU from a DTCH, a DCCH, a CCCH or a linked MTCH, restarting or starting the data inactivity timer.

[0055] In a specific implementation, the step S102 may include the step of: releasing the RRC connection, wherein the release reason may include RRC connection failure, thereby achieving accurate release of the RRC connection without affecting the reception of the MBS service.

[0056] By adopting the solution of this embodiment, the UE can perform state transition more reasonably to avoid affecting the reception of MBS services. Specifically, the data inactivity timer is timely set or reset by monitoring the data transmission on the linked MTCH. As a result, the data inactivity timer can always remain in a non-timeout state during the MBS service transmission, ensuring that the UE will not switch to the idle state when the MBS service is not completed.

[0057] That is to say, using Figure 1 In the embodiment shown, the UE will enter the idle state only when it does not receive the MAC SDU in the linked MTCH within a certain period of time (ie, the data inactivity timer expires), thereby not affecting the UE's reception of the MAC SDU in the linked MTCH.

[0058] Figure 2 It is a flow chart of the second state transition method of an embodiment of the present invention.

[0059] This implementation can be executed by the user equipment side, such as by the UE on the user equipment side. The UE executing this implementation is configured with a data inactivity timer. If the data inactivity timer times out, the UE enters an idle state.

[0060] This implementation scheme can be applied to scenarios where MBS services exist or may exist, such as when the UE is receiving or is interested in receiving data in a logical channel that carries MBS service data. Among them, the logical channel that carries MBS service data for multicast or broadcast in the cell can be defined as a multicast traffic channel (MTCH for short), and the MTCH from which the UE can receive data only in the RRC linked state can be defined as a linked state MTCH.

[0061] Specifically, refer to Figure 2 The state conversion method described in this embodiment may include the following steps:

[0062] Step S201: If the data inactivity timer expires and there is no need to receive data transmitted by the linked state MTCH, the state is converted from the RRC linked state to the idle state.

[0063] The linked MTCH refers to the MTCH that the terminal needs to maintain in the RRC linked state for reception.

[0064] Specifically, step S201 may include the following steps:

[0065] If the data inactivity timer expires, it is determined whether there is a need to receive data transmitted in the linked state MTCH; further, when the determination result is negative, that is, there is no need to receive data transmitted in the linked state MTCH, the state is converted from the RRC linked state to the idle state.

[0066] Further, the state transition method of this embodiment may further include step S203, when the judgment result of step S201 is positive, that is, there is a need to receive data transmitted by the linked state MTCH, the state is maintained in the RRC linked state. Further, after the data reception on the linked state MTCH is terminated, the UE may switch from the RRC linked state to the idle state.

[0067] In a specific implementation, the reception requirement for the data transmitted by the link state MTCH may include: currently receiving the data transmitted by the link state MTCH

[0068] Furthermore, the requirement for receiving data transmitted by the link-state MTCH may also include: preparing to receive data transmitted by the link-state MTCH.

[0069] For example, the data transmitted by the link state MTCH may be transmitted periodically, and the data transmitted by the link state MTCH to be received may mean that although the data transmitted on the link state MTCH is not currently received, the data transmitted by the link state MTCH is ready to be received in the next transmission cycle.

[0070] In a specific implementation, the data inactivity timer may be restarted or started because any MAC entity of the UE receives a MAC SDU from a DTCH, DCCH or CCCH. That is, this embodiment optimizes the timing of UE state transitions based on the processing logic after the data inactivity timer is started or restarted. Although the data inactivity timer will not be restarted or started due to data transmission on the linked MTCH, when the data inactivity timer expires, the UE will preferentially determine whether there is a need to receive data transmitted on the linked MTCH, so as to ensure that the UE can accurately remain in the RRC linked state when there is or will be an MBS service. In particular, for MBS services that have not yet been carried out but will be carried out in the future, the UE using the solution of this embodiment can actively remain in the RRC linked state to avoid delaying the reception of MBS services due to re-establishing the RRC connection in the future.

[0071] In a specific implementation, the step S202 may include the step of: releasing the RRC connection, wherein the release reason includes RRC connection failure. Thus, the RRC connection can be accurately released without affecting the reception of MBS services.

[0072] For example, when it is determined in step S201 that there is no MBS service, or the MBS service of the UE does not need to be performed in the RRC connection state, an RRC release operation is performed.

[0073] From the above, by adopting the solution of this embodiment, the UE can perform state transition more reasonably to avoid affecting the reception of MBS services. Specifically, when the timer expires, before executing the state transition operation, it is determined whether there is a need to receive data transmitted by the linked state MTCH. Therefore, by adding a pre-judgment logic before executing the state transition operation, it is ensured that when the timer expires but there is a need to receive data transmitted by the linked state MTCH, the UE can still remain in the RRC linked state.

[0074] That is to say, using Figure 2 In the scheme shown, if the data inactivity timer times out and the UE is not interested in receiving or is not receiving data in the linked MTCH, the UE in the RRC linked state switches to the idle state, thereby ensuring that the UE can still successfully receive data in the linked MTCH when there is no data in other logical channels.

[0075] exist Figure 1 and Figure 2 In a common implementation of the illustrated embodiment, the MTCH may be used to carry MBS services. Further, the linked MTCH may be used to carry MBS services that require the UE to receive data in the RRC linked state.

[0076] exist Figure 1 and Figure 2 In a common implementation of the illustrated embodiment, the linked-state MTCH may at least include: an MTCH configured with a feedback indication supporting a hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ for short) or configured with HARQ configuration information.

[0077] For example, the downlink data of the linked state MTCH requires the UE to perform HARQ feedback, so the UE must receive the data transmitted through the MTCH in the RRC linked state. At this time, the MTCH can be called a linked state MTCH.

[0078] For another example, the downlink data transmission of the linked MTCH requires the UE to report other feedback information, which also requires the UE to remain in the RRC linked state. For example, the UE needs to report channel state information to the base station in the RRC linked state.

[0079] exist Figure 1 and Figure 2 In a common implementation of the illustrated embodiment, the state transition method may further include the step of: receiving indication information, wherein the indication information is used to indicate whether the configured MTCH is a linked state MTCH.

[0080] For example, the indication information may be dedicated or public signaling.

[0081] For another example, the indication information may be included in the received configuration information, and the received configuration information is used to indicate the relevant information of the MTCH configured by the base station to the UE. For example, the indication information may include RRC state information, and the RRC state information is used to indicate the RRC state of the UE receiving the MTCH. The RRC state of the UE includes an RRC idle state (referred to as idle state), an RRC inactive state, and an RRC linked state. The received RRC state information of the linked state MTCH only includes the RRC linked state.

[0082] Furthermore, the state transition method may further include the step of: determining whether the MTCH is a linked state MTCH according to reception configuration information of the MTCH.

[0083] The base station and the UE may not exchange additional indication information, and the reception configuration information does not add additional fields. The UE may determine whether the MTCH configured by the base station supports HARQ or whether HARQ configuration information is configured based on the reception configuration information. Specifically, the reception configuration information of the MTCH includes an indication of whether HARQ is supported, or includes HARQ configuration information of the MTCH, for example, the HARQ configuration information may include the configuration of HARQ feedback parameters or feedback resources. Thus, it is determined whether the reception RRC state information of the MTCH only includes the RRC link state. This can save signaling overhead.

[0084] For example, if the received MTCH configuration information indicates that the MTCH configuration configured by the base station for the UE supports HARQ, it can be determined that the MTCH is a linked MTCH.

[0085] If the received MTCH configuration information includes HARQ configuration information of the MTCH, it can be determined that the MTCH is a linked MTCH.

[0086] Furthermore, the reception configuration information and the MTCH may correspond one to one.

[0087] Figure 3 The present invention is a flowchart of a method for indicating a link-state MTCH according to an embodiment of the present invention.

[0088] This implementation scheme can be executed by the network side, such as by a base station on the network side. The cell maintained by the base station can support MBS services. In the cell supporting MBS services, there may be MTCHs that require the UE to remain in the RRC linked state for data reception. Therefore, the base station can inform the UE in advance whether the MTCH configured for the UE is a linked state MTCH.

[0089] Specifically, refer to Figure 3 The method for indicating the link-state MTCH in this embodiment may include the following steps:

[0090] Step S301: for a linked MTCH, receiving configuration information of the linked MTCH is sent to indicate that the terminal needs to remain in the RRC linked state to receive the linked MTCH.

[0091] More specifically, before step S301, the method may further include: for each configured MTCH, determining whether the MTCH is a linked MTCH. If it is determined to be a linked MTCH, corresponding receiving configuration information may be generated for the MTCH, and step S301 may be executed to send the information to the UE.

[0092] In a specific implementation, the step S301 may be performed for all MTCHs, such as traversing all MTCHs in the configured cell to determine whether each MTCH is a linked MTCH.

[0093] In a specific implementation, the step S301 may include the step of: indicating, through the HARQ configuration information configured in the reception configuration information, that the terminal needs to remain in the RRC linked state to receive the linked state MTCH.

[0094] In a specific implementation, the step S301 may include the step of: indicating that the terminal needs to remain in the RRC linked state to receive the linked state MTCH through the HARQ support indication configured in the reception configuration information.

[0095] For example, when the reception configuration information is configured with an indication of supporting HARQ or configured with HARQ configuration information, it can be implicitly indicated that the MTCH is a linked state MTCH. Correspondingly, for the UE that receives the reception configuration information, when it is found that the MTCH configured this time is configured with an indication of supporting HARQ or has HARQ configuration information, it can be determined that the MTCH is a linked state MTCH, and it needs to remain in the RRC linked state during the reception of data transmitted by the MTCH.

[0096] In a specific implementation, the step S301 may include the steps of: receiving RRC status information contained in the receiving configuration information, and the received RRC status information only includes the RRC link state to indicate that the terminal needs to remain in the RRC link state to receive the linked state MTCH, wherein the received RRC status information is used to indicate the RRC state required to receive data transmitted by the MTCH.

[0097] Specifically, a bitmap may be used to indicate that the received RRC state information of the linked state MTCH only includes the RRC linked state. That is, the base station may indicate whether the received RRC state information of the MTCH only includes the RRC linked state in a bitmap manner.

[0098] For example, the base station may send reception configuration information of MTCH1, MTCH2, MTCH3, MTCH4 and MTCH5, and a 5-bit character string may be used to indicate whether the RRC state information of the five MTCHs only includes the RRC link state.

[0099] Assuming that a certain bit position is 1, it indicates that the received RRC state information of the corresponding MTCH only includes the RRC link state. Accordingly, if the character string of the received configuration information is 11101, it indicates that the received RRC state information of MTCH1, MTCH2, MTCH3 and MTCH5 only includes the RRC link state, while the received RRC state information of MTCH4 does not only include the RRC link state.

[0100] In a specific implementation, the step S301 may include the step of sending the reception configuration information of the linked MTCH via system information or a multicast control channel (Multicast Control Channel, MCCH for short).

[0101] For example, the base station may indicate the reception RRC state information of each MTCH in the system information or MCCH, wherein the MCCH is a control channel indicating reception configuration information such as the transmission period of the MTCH.

[0102] From the above, using the solution of this embodiment, the network indicates whether the MTCH configured to the UE is a linked state MTCH by receiving configuration information, so that the UE determines whether the RRC linked state must be maintained during the reception of data on the configured MTCH. Further, the UE that receives the reception configuration information can execute the above state transition method to accurately control the switching of its own state when the configured MTCH is a linked state MTCH, so as to avoid affecting its own reception of MBS services.

[0103] That is, by indicating the receiving RRC state information of the MTCH on the network side, the UE can receive the MTCH data in a suitable RRC state, thereby better realizing the MBS service.

[0104] Figure 4 It is a schematic diagram of the structure of the first state conversion device of the embodiment of the present invention. Those skilled in the art will appreciate that the state conversion device 4 described in this embodiment can be used to implement the above Figure 1 The method and technical solution described in the embodiments.

[0105] Specifically, refer to Figure 4 The state conversion device 4 in this embodiment may include: a start module 41, if data transmitted by a linked state MTCH is received, start or restart a data inactivity timer, wherein the linked state MTCH refers to an MTCH that the terminal needs to maintain in an RRC linked state for reception; a conversion module 42, if the data inactivity timer expires, converts the state from the RRC linked state to the idle state.

[0106] For more information about the working principle and working mode of the state conversion device 4, please refer to the above Figure 1The relevant description in will not be repeated here.

[0107] Figure 5 It is a schematic diagram of the structure of the second state conversion device of the embodiment of the present invention. Those skilled in the art will appreciate that the state conversion device 5 described in this embodiment can be used to implement the above Figure 2 The method and technical solution described in the embodiments.

[0108] Specifically, refer to Figure 5 The state conversion device 5 described in this embodiment may include: a conversion module 51, if the data inactivation timer expires and there is no need to receive data transmitted by the linked state MTCH, the state is converted from the RRC linked state to the idle state; wherein the linked state MTCH refers to the MTCH that the terminal needs to maintain in the RRC linked state for reception.

[0109] For more information about the working principle and working mode of the state conversion device 5, please refer to the above Figure 2 The relevant description in will not be repeated here.

[0110] Figure 6 1 is a schematic diagram of a structure of a link state MTCH indication device according to an embodiment of the present invention. A person skilled in the art will appreciate that the link state MTCH indication device 6 described in this embodiment can be used to implement the above Figure 3 The method and technical solution described in the embodiments.

[0111] Specifically, refer to Figure 6 In this embodiment, the indication device 6 for the linked-state MTCH may include: a sending module 61, for the linked-state MTCH, sending the reception configuration information of the linked-state MTCH to indicate that the terminal needs to remain in the RRC linked state to receive the linked-state MTCH.

[0112] For more information about the working principle and working method of the link state MTCH indication device 6, please refer to the above Figure 3 The relevant description in will not be repeated here.

[0113] Furthermore, an embodiment of the present invention also discloses a storage medium having a computer program stored thereon, wherein the computer program is executed by a processor Figures 1 to 3 The method and technical solution described in the illustrated embodiment. Preferably, the storage medium may include a computer-readable storage medium such as a non-volatile memory or a non-transitory memory. The storage medium may include a ROM, a RAM, a magnetic disk or an optical disk, etc.

[0114] Furthermore, an embodiment of the present invention also discloses a terminal, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the above-mentioned Figure 1 and Figure 2 The method and technical solution described in the illustrated embodiment. Specifically, the terminal may be a UE.

[0115] Furthermore, an embodiment of the present invention also discloses a base station, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the above-mentioned Figure 3 The method and technical solution described in the illustrated embodiment. Specifically, the base station may be a NR base station.

[0116] The technical solution of this invention can be applied to 5G (5Generation) communication systems, as well as 4G and 3G communication systems, and can also be applied to various new communication systems in the future, such as 6G and 7G.

[0117] The technical solution of the present invention is also applicable to different network architectures, including but not limited to relay network architecture, dual-link architecture, Vehicle-to-Everything (vehicle-to-anything communication) architecture and other architectures.

[0118] The core network described in the embodiments of the present application may be an evolved packet core network (EPC for short), a 5G Core Network (5G Core Network), or a new core network in a future communication system. The 5G Core Network is composed of a group of devices, and implements access and mobility management functions (AMF) that implement mobility management and other functions, user plane functions (UPF) that provide packet routing and forwarding and QoS (Quality of Service) management and other functions, and session management functions (SMF) that provide session management, IP address allocation and management and other functions. The EPC may be composed of an MME that provides mobility management, gateway selection and other functions, a Serving Gateway (S-GW) that provides packet forwarding and other functions, and a PDN Gateway (P-GW) that provides terminal address allocation, rate control and other functions.

[0119] For MBS services, the core network may include several new network elements to implement functions such as data packet forwarding, MBS session management, QoS management, transmission mode switching (switching between unicast and multicast / broadcast transmission modes), etc. Another way is that the functions can be implemented by network elements in the existing core network.

[0120] The base station (BS) in the embodiment of the present application, which may also be referred to as a base station device, is a device deployed in a radio access network (RAN) to provide wireless communication functions. For example, the device that provides base station functions in a 2G network includes a base transceiver station (BTS), the device that provides base station functions in a 3G network includes a node B (NodeB), the device that provides base station functions in a 4G network includes an evolved node B (evolvedNodeB, eNB), and in wireless local area networks (WLANs), the device that provides base station functions is an access point (AP), and the device that provides base station functions in 5G New Radio (NR) is a gNB, and a node B (ng-eNB) that continues to evolve, wherein the gNB and the terminal use NR technology for communication, and the ng-eNB and the terminal use E-UTRA (Evolved Universal Terrestrial Radio Access) technology for communication, and both the gNB and the ng-eNB can be connected to the 5G core network. The base station in the embodiment of the present application also includes a device that provides base station functions in a new communication system in the future.

[0121] The base station controller in the embodiment of the present application is a device for managing base stations, such as a base station controller (BSC) in a 2G network, a radio network controller (RNC) in a 3G network, and may also refer to a device for controlling and managing base stations in future new communication systems.

[0122] The network side in the embodiment of the present invention refers to a communication network that provides communication services for terminals, including base stations of a wireless access network, and may also include a base station controller of the wireless access network, and may also include equipment on the core network side.

[0123] The terminal in the embodiments of the present application may refer to various forms of user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal equipment, wireless communication equipment, user agent or user device. The terminal equipment may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc., and the embodiments of the present application are not limited to this.

[0124] The embodiment of the present application defines the unidirectional communication link from the access network to the terminal as a downlink, the data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called the downlink direction; and the unidirectional communication link from the terminal to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is called the uplink direction.

[0125] It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article indicates that the associated objects before and after are in an "or" relationship.

[0126] The "plurality" appearing in the embodiments of the present application refers to two or more.

[0127] The first, second, etc. descriptions appearing in the embodiments of the present application are only used for illustration and distinction of the description objects. There is no order, nor do they indicate any special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0128] The "connection" that appears in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection to achieve communication between devices, and the embodiments of the present application do not impose any limitations on this.

[0129] It should be understood that in the embodiments of the present application, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0130] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM) and direct rambus RAM (DR RAM).

[0131] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0132] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0133] In the several embodiments provided in the present application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the device embodiments described above are merely schematic; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0134] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0135] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0136] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0137] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A state transition method, characterized in that: include: If any MAC entity receives data transmitted by a linked MTCH, a data inactivity timer is started or restarted, wherein the linked MTCH refers to an MTCH that the terminal needs to maintain in the RRC linked state for reception; If the data inactivity timer expires, converting the state from the RRC connected state to the idle state; Also includes: receiving indication information, wherein the indication information is used to indicate whether the configured MTCH is a linked MTCH; and / or Determine whether the MTCH is a linked MTCH according to the reception configuration information of the MTCH.

2. The state conversion method according to claim 1, characterized in that: The data received from the link state MTCH transmission includes: The MAC entity corresponding to the linked-state MTCH receives the MAC SDU transmitted by the linked-state MTCH.

3. The state conversion method according to claim 1, characterized in that: The converting the state from the RRC linked state to the idle state comprises: Release the RRC connection.

4. The state transition method according to any one of claims 1 to 3, characterized in that: The MTCH is used to carry MBS services.

5. The state transition method according to any one of claims 1 to 3, characterized in that: The linked-state MTCH at least includes: an MTCH configured with an indication of supporting HARQ or configured with HARQ configuration information.

6. A state transition method, characterized in that: include: If the data inactivity timer expires and there is no need to receive data transmitted by the linked state MTCH, convert the state from the RRC linked state to the idle state; The linked MTCH refers to the MTCH that the terminal needs to maintain in the RRC linked state for reception; Also includes: receiving indication information, wherein the indication information is used to indicate whether the configured MTCH is a linked MTCH; and / or Determine whether the MTCH is a linked MTCH according to the reception configuration information of the MTCH.

7. The state conversion method according to claim 6, characterized in that: The reception requirement for the data transmitted by the link state MTCH includes: currently receiving the data transmitted by the link state MTCH, and preparing to receive the data transmitted by the link state MTCH.

8. The state conversion method according to claim 7, characterized in that: The data transmitted by the link-state MTCH is transmitted periodically, and the preparation for receiving the data transmitted by the link-state MTCH refers to preparing to receive the data transmitted by the link-state MTCH in the next nearest transmission period.

9. The state transition method according to any one of claims 6 to 8, characterized in that: The MTCH is used to carry MBS services.

10. The state transition method according to any one of claims 6 to 8, characterized in that: The linked-state MTCH at least includes: an MTCH configured with an indication of supporting HARQ or configured with HARQ configuration information.

11. A method for indicating a link-state MTCH, characterized in that: include: For a linked MTCH, sending reception configuration information of the linked MTCH to indicate that the terminal needs to remain in the RRC linked state to receive the linked MTCH; The receiving configuration information is used to instruct the terminal to start or restart the data inactivity timer if any MAC entity receives data transmitted by the linked state MTCH; if the data inactivity timer expires, the state is converted from the RRC linked state to the idle state; or, if the data inactivity timer expires and there is no need to receive data transmitted by the linked state MTCH, the state is converted from the RRC linked state to the idle state; wherein the linked state MTCH refers to the MTCH that the terminal needs to maintain in the RRC linked state for reception; Also includes: Sending indication information, wherein the indication information is used to indicate whether the configured MTCH is a linked MTCH; and / or The reception configuration information of the MTCH indicates whether the MTCH is a linked MTCH.

12. The indicating method according to claim 11, characterized in that: The sending of the reception configuration information of the linked state MTCH to indicate that the terminal needs to remain in the RRC linked state to receive the linked state MTCH includes: The HARQ support indication configured in the reception configuration information is used to indicate that the terminal needs to remain in the RRC linked state to receive the linked state MTCH.

13. The indicating method according to claim 11, characterized in that: The sending of the reception configuration information of the linked state MTCH to indicate that the terminal needs to remain in the RRC linked state to receive the linked state MTCH includes: The HARQ configuration information of the MTCH configured in the reception configuration information indicates that the terminal needs to remain in the RRC linked state to receive the linked state MTCH.

14. The indicating method according to claim 11, characterized in that: The sending of the reception configuration information of the linked state MTCH to indicate that the terminal needs to remain in the RRC linked state to receive the linked state MTCH includes: The receiving RRC state information contained in the receiving configuration information and the receiving RRC state information only including the RRC link state is used to indicate that the terminal needs to remain in the RRC link state to receive the link state MTCH, wherein the receiving RRC state information is used to indicate the RRC state required for receiving data transmitted by the MTCH.

15. The indicating method according to claim 14, characterized in that: The receiving RRC status information only includes the RRC link status including: The received RRC state information of the linked state MTCH indicated by the bitmap only includes the RRC linked state.

16. The indicating method according to claim 11, characterized in that: The receiving configuration information of sending the link state MTCH includes: The reception configuration information is sent through system information or MCCH.

17. A state conversion device, characterized in that: include: The starting module starts or restarts the data inactivation timer if any MAC entity receives data transmitted by the linked MTCH, wherein the linked MTCH refers to the MTCH that the terminal needs to maintain in the RRC linked state for reception; A conversion module, if the data inactivity timer expires, converts the state from the RRC connection state to the idle state; The state conversion device further performs the following steps: receiving indication information, wherein the indication information is used to indicate whether the configured MTCH is a linked MTCH; and / or Determine whether the MTCH is a linked MTCH according to the reception configuration information of the MTCH.

18. A state conversion device, characterized in that: include: A conversion module, if the data inactivation timer expires and there is no need to receive data transmitted by the linked state MTCH, converting the state from the RRC linked state to the idle state; The linked MTCH refers to the MTCH that the terminal needs to maintain in the RRC linked state for reception; The state conversion device further performs the following steps: receiving indication information, wherein the indication information is used to indicate whether the configured MTCH is a linked MTCH; and / or Determine whether the MTCH is a linked MTCH according to the reception configuration information of the MTCH.

19. A link-state MTCH indication device, characterized in that: include: A sending module, for a linked MTCH, sending reception configuration information of the linked MTCH to indicate that the terminal needs to remain in an RRC linked state to receive the linked MTCH; The receiving configuration information is used to instruct the terminal to start or restart the data inactivity timer if any MAC entity receives data transmitted by the linked state MTCH; if the data inactivity timer expires, the state is converted from the RRC linked state to the idle state; or, if the data inactivity timer expires and there is no need to receive data transmitted by the linked state MTCH, the state is converted from the RRC linked state to the idle state; wherein the linked state MTCH refers to the MTCH that the terminal needs to maintain in the RRC linked state for reception; The link-state MTCH indication device further performs the following steps: Sending indication information, wherein the indication information is used to indicate whether the configured MTCH is a linked MTCH; and / or The reception configuration information of the MTCH indicates whether the MTCH is a linked MTCH.

20. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 16 are performed.

21. A terminal comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the steps of the method according to any one of claims 1 to 10 are performed.

22. A base station, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the steps of the method according to any one of claims 11 to 16 are performed.

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