WO2024148614A1 - 无线资源控制rrc连接处理方法及装置 - Google Patents

无线资源控制rrc连接处理方法及装置 Download PDF

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Publication number
WO2024148614A1
WO2024148614A1 PCT/CN2023/072169 CN2023072169W WO2024148614A1 WO 2024148614 A1 WO2024148614 A1 WO 2024148614A1 CN 2023072169 W CN2023072169 W CN 2023072169W WO 2024148614 A1 WO2024148614 A1 WO 2024148614A1
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WIPO (PCT)
Prior art keywords
terminal device
connection
resource control
path
base station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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PCT/CN2023/072169
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English (en)
French (fr)
Inventor
杨星
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2023/072169 priority Critical patent/WO2024148614A1/zh
Priority to CN202380008093.XA priority patent/CN116458209A/zh
Priority to EP23915383.6A priority patent/EP4651619A4/en
Publication of WO2024148614A1 publication Critical patent/WO2024148614A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/03—Reselecting a link using a direct mode connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/03—Reselecting a link using a direct mode connection
    • H04W36/033—Reselecting a link using a direct mode connection in pre-organised networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/23—Manipulation of direct-mode connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a method and device for processing a radio resource control (RRC) connection.
  • RRC radio resource control
  • the side link (SideLink, SL) transmission communication mode is introduced, and three transmission modes are supported on SideLink: unicast, multicast and broadcast.
  • a UE can communicate with the base station through the relay of another UE instead of directly connecting to the base station.
  • the UE that is not connected to the base station is called the remote UE (remote UE), and the UE that provides relay function is called the relay UE (relay UE).
  • the remote UE and the relay UE communicate through SideLink unicast.
  • the remote UE experiences radio link failure, switching, or cell reselection
  • the remote UE needs to trigger the radio resource control (Radio Resource Control, RRC) connection reconstruction, but the RRC connection reconstruction will cause interruption and signaling consumption of the remote UE.
  • RRC Radio Resource Control
  • the present disclosure provides a radio resource control (RRC) connection processing method and device, which can avoid the interruption and signaling consumption of the remote UE caused by the RRC connection reconstruction when the relay UE has a radio link failure, switching, or cell reselection.
  • RRC radio resource control
  • a first aspect of the present disclosure provides a radio resource control (RRC) connection processing method, which is applied to a first terminal device.
  • the method includes:
  • determining whether to reestablish a radio resource control (RRC) connection is performed, wherein the second terminal device is a relay terminal device that performs sidelink communication with the first terminal device.
  • RRC radio resource control
  • the determining whether to perform radio resource control RRC connection reestablishment includes:
  • the multi-path connection includes a direct path where the first terminal device is directly connected to the base station and an indirect path where the first terminal device is connected to the base station via the second terminal device;
  • no radio resource control RRC connection reconstruction is performed.
  • determining whether to perform wireless resource control RRC connection reconstruction based on whether the first terminal device is configured with multi-path connection also includes: in response to determining that the first terminal device is not configured with multi-path connection, performing wireless resource control RRC connection reconstruction.
  • not performing a radio resource control RRC connection reestablishment includes at least one of the following:
  • radio resource control RRC connection reconstruction is not performed.
  • the determining that a direct path in the multi-path connection is available comprises at least one of the following:
  • the determining that the direct path in the multipath connection supports SRB transmission of a radio signaling bearer includes at least one of the following:
  • the radio link layer control protocol RLC of the SRB is located on a direct path in the multipath connection;
  • SRB is configured as split SRB or duplicated SRB.
  • the method further includes:
  • the handover indication is sent to the base station via the direct path.
  • the method further includes:
  • the base station Send switching information of the second terminal device to the base station, where the switching information includes a target cell to which the second terminal device switches.
  • the method further includes:
  • the method further includes:
  • the sidelink connection with the second terminal device is released.
  • determining whether the target cell to which the second terminal device is switched belongs to a specific target cell includes:
  • the cell identifier of the target cell is matched with the cell identifiers in the specific target list to determine whether the target cell belongs to a specific target cell.
  • the method further includes:
  • the specific target list sent by the base station is received, where the specific target list carries the cell identifier of the specific target cell.
  • the method further includes:
  • a second aspect of the present disclosure provides a method for processing a radio resource control (RRC) connection, which is applied to a base station.
  • the method includes:
  • a switching instruction of a second terminal device is received, which is sent by the first terminal device through a direct path.
  • the method further includes:
  • the method further includes:
  • a specific target list is sent to the first terminal device, where the specific target list carries the cell identifier of the specific target cell.
  • the method further includes:
  • a third aspect of the present disclosure provides a radio resource control (RRC) connection processing device, which is applied to a first terminal device.
  • the device includes:
  • a processing module is used to determine whether to reestablish a radio resource control (RRC) connection in response to receiving a switching indication sent by a second terminal device, wherein the second terminal device is a relay terminal device that performs side link communication with the first terminal device.
  • RRC radio resource control
  • a fourth aspect of the present disclosure provides a radio resource control (RRC) connection processing device, the device being applied to a base station, the device comprising:
  • the receiving module is used to receive a switching indication of a second terminal device sent by a first terminal device via a direct path.
  • the fifth aspect embodiment of the present disclosure provides a communication device, which includes: a transceiver; a memory; a processor, which is connected to the transceiver and the memory respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and can implement the method of the first aspect embodiment or the second aspect embodiment of the present disclosure.
  • the sixth aspect embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer executable instructions; after the computer executable instructions are executed by a processor, the method of the first aspect embodiment or the second aspect embodiment of the present disclosure can be implemented.
  • a seventh aspect of the present disclosure provides a communication system, the communication system comprising a first terminal device, a second terminal device, and a base station, wherein: the first terminal device is configured to execute the method of the first aspect of the present disclosure; the base station is configured to execute the method of the first aspect of the present disclosure; A method of an embodiment of the second aspect is disclosed.
  • the embodiment of the present disclosure provides a method and apparatus for processing a radio resource control RRC connection, wherein a first terminal device can determine whether to reestablish a radio resource control RRC connection upon receiving a switching indication sent by a second terminal device.
  • the management of the radio resource control RRC connection can be performed based on the determination result of whether there is a multipath connection.
  • the direct path connected to the base station can be used to communicate with the base station, so there is no need to reestablish the RRC connection, which can effectively avoid the interruption and signaling consumption of the remote UE caused by the RRC connection reconstruction.
  • FIG1 is a schematic diagram of a flow chart of a method for processing a radio resource control (RRC) connection according to an embodiment of the present disclosure
  • FIG2 is a schematic diagram of a flow chart of a method for processing a radio resource control RRC connection according to an embodiment of the present disclosure
  • FIG3 is a schematic diagram of a flow chart of a method for processing a radio resource control RRC connection according to an embodiment of the present disclosure
  • FIG4 is a schematic diagram of a flow chart of a method for processing a radio resource control RRC connection according to an embodiment of the present disclosure
  • FIG5 is a schematic diagram of a flow chart of a method for processing a radio resource control RRC connection according to an embodiment of the present disclosure
  • FIG6 is a schematic diagram of a flow chart of a method for processing a radio resource control RRC connection according to an embodiment of the present disclosure
  • FIG7 is a schematic diagram of a flow chart of a method for processing a radio resource control RRC connection according to an embodiment of the present disclosure
  • FIG8 is a schematic diagram of a flow chart of a method for processing a radio resource control RRC connection according to an embodiment of the present disclosure
  • FIG9 is a schematic diagram of a flow chart of a method for processing a radio resource control RRC connection according to an embodiment of the present disclosure
  • FIG10 is a timing diagram of a radio resource control RRC connection processing method according to an embodiment of the present disclosure.
  • FIG11 is a block diagram of a radio resource control RRC connection processing device according to an embodiment of the present disclosure.
  • FIG12 is a block diagram of a radio resource control RRC connection processing device according to an embodiment of the present disclosure.
  • FIG13 is a schematic diagram of the structure of a communication device according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure.
  • the side link (SideLink, SL) transmission communication mode is introduced, and three transmission modes are supported on SideLink: unicast, multicast and broadcast.
  • a UE can communicate with the base station through the relay of another UE instead of directly connecting to the base station.
  • the UE that is not connected to the base station is called the remote UE (remote UE), and the UE that provides relay function is called the relay UE (relay UE).
  • the remote UE and the relay UE communicate through SideLink unicast.
  • the remote UE experiences radio link failure, switching, or cell reselection
  • the remote UE needs to trigger the radio resource control (Radio Resource Control, RRC) connection reconstruction, but the RRC connection reconstruction will cause interruption and signaling consumption of the remote UE.
  • RRC Radio Resource Control
  • the present disclosure proposes a radio resource control (RRC) connection processing method and device, which can avoid the interruption and signaling consumption of the remote UE caused by RRC connection reconstruction when the relay UE encounters radio link failure, switching, or cell reselection.
  • RRC radio resource control
  • first, second, third, etc. may be used to describe various information in the disclosed embodiments, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information.
  • word "if” as used herein may be interpreted as "at the time of” or "when” or "in response to determining”.
  • FIG. 1 shows a radio resource control RRC connection processing method according to an embodiment of the present disclosure. As shown in Figure 1, the method is applied to a first terminal device.
  • the first terminal device may be a terminal device (User Equipment, UE) that is not directly connected to a base station but communicates with the base station through another relay terminal device, that is, a remote UE (remote UE), and may include the following steps.
  • UE User Equipment
  • remote UE remote UE
  • Step 101 In response to receiving a switching indication sent by a second terminal device, determine whether to reestablish a radio resource control RRC connection.
  • the second terminal device is a relay terminal device that performs sidelink communication with the first terminal device; the switching indication is used to indicate that a service cell switching has occurred in the second terminal device.
  • the first terminal device and the second terminal device can communicate with each other through sidelink unicast.
  • a notification message (Notification Message Sidelink) can be sent to the connected first terminal device through the sidelink, and the notification message can carry a switching indication for indicating that the second terminal device has a service cell switching.
  • the first terminal device can determine that the second terminal device has a service cell switching in response to the received switching indication, and at this time, the first terminal device can further determine whether to perform radio resource control RRC connection reconstruction.
  • the radio resource control RRC connection reconstruction may not be performed; as a possible implementation method, when the first terminal device determines that the switching of the second terminal device affects the communication connection between the first terminal device and the base station (such as the switching of the second terminal device, causing the first terminal device and the base station to be unable to continue the communication connection normally), the radio resource control RRC connection reconstruction needs to be performed.
  • the first terminal device can determine whether to reestablish the wireless resource control RRC connection when receiving a switching indication sent by the second terminal device.
  • the first terminal device after receiving the switching indication sent by the second terminal device, the first terminal device performs a judgment process for reestablishing the wireless resource control RRC connection, and when the switching of the second terminal device does not affect the communication connection between the first terminal device and the base station, the RRC connection reconstruction is not performed, which can effectively avoid the interruption and signaling consumption of the first terminal device caused by the RRC connection reconstruction.
  • FIG2 shows a method for processing a radio resource control RRC connection according to an embodiment of the present disclosure.
  • the method is applied to a first terminal device, based on the embodiment shown in FIG1 , as shown in FIG2 , and may include the following steps.
  • Step 201 In response to receiving a switching instruction sent by a second terminal device, determine whether a first terminal device is configured with a multi-path connection.
  • the multi-path connection includes a direct path in which the first terminal device is directly connected to the base station and an indirect path in which the first terminal device is connected to the base station through the second terminal device.
  • the direct path is a link in which the first terminal device directly establishes a communication connection with the base station without passing through the second terminal device;
  • the indirect path is a link in which the first terminal device needs to pass through the relay of the second terminal device to establish a communication connection with the base station.
  • the first terminal device may determine that a service interruption has occurred in the second terminal device in response to the received switching instruction. Zone switching, at this time, the first terminal device can further determine whether a multi-path connection with the base station is configured, and determine whether to perform radio resource control RRC connection reconstruction based on whether the first terminal device is configured with a multi-path connection.
  • the first terminal device can still maintain the RRC connection with the base station through a direct path, so there is no need to reconstruct the RRC connection; on the contrary, when a multi-path connection is not configured, that is, only an indirect path is configured between the first terminal device and the base station, RRC connection reconstruction is required.
  • Step 202 In response to determining that the first terminal device is configured with a multi-path connection, no radio resource control RRC connection reconstruction is performed.
  • a multipath connection between the first terminal device and the base station is configured, and the bearer of the first terminal device can be transmitted only through a direct path, namely a direct bearer (Direct Bearer); the bearer of the first terminal device can also be transmitted only through an indirect path, which is called an indirect bearer (Indirect Bearer); the bearer of the first terminal device can also be transmitted through both a direct path and an indirect path, which is called a multipath bearer (Multipath Bearer).
  • the first terminal device can maintain a connection with the network through both a direct path and an indirect path, which can improve the transmission rate and transmission reliability.
  • the first terminal device When the first terminal device is configured with a multipath connection, the first terminal device has established a direct path and an indirect path connection with the serving cell and the serving relay. Even if the relay UE (i.e., the second terminal device) is switched, the first terminal device can still maintain an RRC connection with the network through a direct path, so there is no need to reestablish the RRC connection, which can avoid the first terminal device from performing an RRC connection reconstruction when the second terminal device is switched, resulting in communication interruption and signaling consumption of the first terminal device.
  • the relay UE i.e., the second terminal device
  • Step 203 In response to determining that the first terminal device is not configured with a multi-path connection, reestablishing the radio resource control RRC connection.
  • the first terminal device may determine whether to configure a multi-path connection when receiving a switching indication sent by the second terminal device, and in response to determining that a multi-path connection is configured, determine not to reestablish the wireless resource control RRC connection.
  • the first terminal device may determine whether to configure a multi-path connection when receiving a switching indication sent by the second terminal device, and in response to determining that a multi-path connection is not configured, it is necessary to reestablish the wireless resource control RRC connection.
  • the wireless resource control RRC connection can be managed based on the result of determining whether a multi-path connection is configured.
  • the direct path connected to the base station can be further used to communicate with the base station, so there is no need to reestablish the RRC connection, which can effectively avoid the interruption and signaling consumption of the remote UE caused by the RRC connection reconstruction.
  • Figure 3 shows a radio resource control RRC connection processing method according to an embodiment of the present disclosure. The method is applied to a first terminal device, based on the embodiments shown in Figures 1 and 2, as shown in Figure 3, and may include the following steps.
  • Step 301 In response to receiving a switching instruction sent by a second terminal device, determine whether a first terminal device is configured with a multi-path connection.
  • step 201 of the embodiment can refer to the relevant description in step 201 of the embodiment, which will not be repeated here.
  • Step 302 In response to determining that the first terminal device is configured with a multi-path connection and that a direct path in the multi-path connection is available, no radio resource control RRC connection reconstruction is performed.
  • the first terminal device may further determine whether the direct path in the multi-path connection is available to ensure that the direct path can be used for normal communication with the base station.
  • the direct path in the multi-path connection it is determined not to perform radio resource control RRC connection reconstruction; conversely, when it is determined that the direct path in the multi-path connection is not available, RRC connection reconstruction is required.
  • Determining that the direct path in the multipath connection is available may include at least one of the following: determining that the direct path in the multipath connection has not failed, the failure including a wireless link failure; determining that the transmission of the direct path in the multipath connection has not been suspended.
  • RRC connection re-establishment When it is determined that the direct path in the multi-path connection has not failed, it can be determined that the direct link can be used for communication with the base station, and there is no need to perform radio resource control RRC connection re-establishment.
  • the direct path fails and/or the transmission of the direct path is suspended, it can be determined that the direct link cannot be used for communication with the base station and radio resource control RRC connection reconstruction is required; when it is determined that the direct path does not fail and the transmission of the direct path is not suspended, it can be determined that the direct link can be used for communication with the base station and radio resource control RRC connection reconstruction is not required.
  • Step 303 Send a switching indication of the second terminal device and switching information of the second terminal device to the base station via a direct path, where the switching information includes a target cell for switching of the second terminal device.
  • the target cell can be acquired by the first terminal device based on the discovery signal of the second terminal device.
  • the first terminal device and the second terminal device can discover each other through a discovery process.
  • the first terminal device can send or receive a discovery signal.
  • the discovery signal carries information such as the service cell identifier and UE identifier of the terminal device.
  • the first terminal device can receive the discovery signal of the second terminal device through the discovery process, and determine the service cell after the second terminal device is switched, that is, the target cell, according to the service cell identifier in the discovery signal.
  • the service cells of the direct path and the indirect path in the multi-path connection can only belong to the same base station.
  • the first terminal device when it is determined that the first terminal device is configured with a multi-path connection and the direct path in the multi-path connection is available, the first terminal device can send a switching indication of the second terminal device to the base station through the direct path, as well as switching information including the target cell for switching of the second terminal device, so that the base station can subsequently send a candidate cell list to the first terminal device, and the cells in the candidate cell list belong to the same base station as the service cell of the direct path.
  • the base station can also determine whether to release the connection with the second terminal device based on the switching indication of the second terminal device sent by the first terminal device and the target cell for switching of the second terminal device, and send indication information to the first terminal device to indicate whether to release the side link connection with the second terminal device.
  • the first terminal device when the first terminal device sends the switching indication and switching information of the second terminal device to the base station, as a possible implementation method, the first terminal device may send the switching indication and switching information of the second terminal device to the base station respectively, and the order of sending the switching indication and the switching information is not specifically limited here; as a possible implementation method, the first terminal device may send the switching indication and switching information of the second terminal device to the base station at the same time, such as the switching indication may also carry the switching information, etc., and there is no specific limitation on this.
  • Step 304 Release the sidelink connection with the second terminal device.
  • the first terminal device in response to the first terminal device being configured with a multi-path connection, after the first terminal device determines not to perform radio resource control RRC connection reconstruction, it can directly release the side link connection with the second terminal device.
  • the first terminal device may determine whether the target cell to which the second terminal device switches belongs to a specific target cell; in response to the target cell belonging to the specific target cell, maintain the sidelink connection with the second terminal device; in response to the target cell not belonging to the specific target cell, release the sidelink connection with the second terminal device.
  • a specific target list (i.e., a candidate cell list) sent by a base station may be received, and the specific target list carries a cell identifier of a specific target cell; when determining whether the target cell to which the second terminal device switches belongs to the specific target cell, the cell identifier of the target cell may be matched with the cell identifier in the specific target list to determine whether the target cell belongs to the specific target cell.
  • the specific The target cell is a candidate cell belonging to the same base station as the serving cell of the direct path.
  • the first terminal device may receive indication information sent by the base station, and the indication information is used to indicate whether to release the side link connection with the second terminal device.
  • the first terminal device further determines whether to release the side link connection with the second terminal device in response to the indication information sent by the base station. If the indication information sent by the base station indicates to release the side link connection with the second terminal device, the first terminal device performs a corresponding release process; if the indication information sent by the base station indicates to maintain the side link connection with the second terminal device, the first terminal device does not perform the corresponding release process and maintains the side link connection with the second terminal device.
  • the first terminal device when receiving a switching indication sent by the second terminal device, the first terminal device can manage the wireless resource control RRC connection based on the determination result of whether there is a multipath connection and whether the direct path is available.
  • the direct path connected to the base station can be further used to communicate with the base station. Therefore, there is no need to reestablish the RRC connection, which can effectively avoid the interruption of the remote UE and signaling consumption caused by the RRC connection reconstruction.
  • Figure 4 shows a radio resource control RRC connection processing method according to an embodiment of the present disclosure. The method is applied to a first terminal device, based on the embodiments shown in Figures 1, 2, and 3, as shown in Figure 4, and may include the following steps.
  • Step 401 In response to receiving a switching instruction sent by a second terminal device, determine whether a first terminal device is configured with a multi-path connection.
  • step 201 of the embodiment can refer to the relevant description in step 201 of the embodiment, which will not be repeated here.
  • Step 402 In response to determining that the first terminal device is configured with a multi-path connection and determining that the direct path in the multi-path connection supports radio signaling bearer SRB transmission, no radio resource control RRC connection reconstruction is performed.
  • the base station can configure the Radio Link Control (RLC) of the Signaling Radio Bearer (SRB) on a direct path or an indirect path, and transmit it through the direct path or the indirect path.
  • the SRB can also be connected to two RLCs, which are located on the direct path and the indirect path.
  • the SRB can be transmitted through the direct path and the indirect path at the same time, including split SRB or duplicated SRB.
  • split SRB and duplicated SRB the SRB can be connected to two RLCs, which are located on the direct link and the indirect link respectively.
  • the first terminal device may further determine whether the direct path in the multi-path connection supports wireless signaling bearer SRB transmission to ensure that the direct path can be used for normal communication with the base station.
  • wireless resource control RRC connection reconstruction is not performed; conversely, when it is determined that the direct path in the multi-path connection does not support wireless signaling bearer SRB transmission, RRC connection reconstruction is required.
  • determining that the direct path in the multipath connection supports the transmission of wireless signaling bearer SRB includes at least one of the following: the radio link layer control protocol RLC of SRB is located on the direct path in the multipath connection; the SRB is configured as split SRB or duplicated SRB.
  • the wireless link layer control protocol RLC of SRB is not located on a direct path in a multi-path connection, it can be determined that the direct path does not support wireless signaling carrying SRB transmission, and wireless resource control RRC connection reconstruction is required; when it is determined that the wireless link layer control protocol RLC of SRB is located on a direct path in a multi-path connection, it can be determined that the direct path supports wireless signaling carrying SRB transmission, and wireless resource control RRC connection reconstruction is not required.
  • the SRB is not configured as a split SRB or a duplicated SRB, it can be determined that the direct path does not support the SRB transmission of the wireless signaling bearer, and it is necessary to perform Radio resource control RRC connection reestablishment; when it is determined that the SRB configuration is split SRB or duplicated SRB, it can be determined that the direct path supports radio signaling bearer SRB transmission, and radio resource control RRC connection reestablishment is not required.
  • the radio link layer control protocol RLC of the SRB is located on a direct path in a multi-path connection, and to determine whether the SRB is configured as a split SRB or a duplicated SRB.
  • the direct path does not support SRB transmission carried by wireless signaling, and wireless resource control RRC connection reconstruction is required; when it is determined that the radio link layer control protocol RLC of the SRB is located on a direct path in a multi-path connection, and/or when it is determined that the SRB is configured as a split SRB or a duplicated SRB, it can be determined that the direct path supports SRB transmission carried by wireless signaling, and wireless resource control RRC connection reconstruction is not required.
  • Step 403 Send a switching indication of the second terminal device and switching information of the second terminal device to the base station through a direct path, where the switching information includes a target cell for switching of the second terminal device.
  • step 303 of the embodiment can refer to the relevant description in step 303 of the embodiment, which will not be repeated here.
  • Step 404 Release the sidelink connection with the second terminal device.
  • step 304 of the embodiment please refer to the relevant description in step 304 of the embodiment, which will not be repeated here.
  • the first terminal device when receiving a switching indication sent by the second terminal device, can manage the wireless resource control RRC connection based on the determination result of whether there is a multi-path connection and whether the direct path in the multi-path connection supports the wireless signaling bearer SRB transmission.
  • the direct path connected to the base station can be further used to communicate with the base station. Therefore, there is no need to reestablish the RRC connection, which can effectively avoid the interruption of the remote UE and signaling consumption caused by the RRC connection reconstruction.
  • Figure 5 shows a radio resource control RRC connection processing method according to an embodiment of the present disclosure. The method is applied to a first terminal device, based on the embodiments shown in Figures 1, 2, 3, and 4, as shown in Figure 5, and may include the following steps.
  • Step 501 In response to receiving a switching instruction sent by a second terminal device, determine whether a first terminal device is configured with a multi-path connection.
  • step 201 of the embodiment can refer to the relevant description in step 201 of the embodiment, which will not be repeated here.
  • Step 502 In response to determining that the first terminal device is configured with a multi-path connection, determining that a direct path in the multi-path connection is available, and determining that the direct path in the multi-path connection supports radio signaling bearer SRB transmission, no radio resource control RRC connection reconstruction is performed.
  • the first terminal device may further determine whether the direct path in the multi-path connection is available and whether the direct path in the multi-path connection supports wireless signaling bearer SRB transmission to ensure that the direct path can be used for normal communication with the base station.
  • the direct path in the multi-path connection can be used for communication with the base station and that the direct path in the multi-path connection supports wireless signaling bearer SRB transmission
  • it is determined not to perform wireless resource control RRC connection reconstruction when it is determined that the direct path in the multi-path connection is not available and/or it is determined that the direct path in the multi-path connection does not support wireless signaling bearer SRB transmission, RRC connection reconstruction is required.
  • determining that the direct path in the multipath connection is available includes at least one of the following: determining that the direct path in the multipath connection has not failed, and the failure includes a wireless link failure; determining that the transmission of the direct path in the multipath connection has not been suspended.
  • the specific implementation process can be referred to the relevant description in step 302 of the embodiment, which will not be repeated here.
  • Determining that the direct path in the multipath connection supports the transmission of the radio signaling bearer SRB includes at least one of the following: the radio link layer control protocol RLC of the SRB is located in the direct path in the multipath connection; the SRB is configured as a split SRB or a duplicated SRB.
  • the radio link layer control protocol RLC of the SRB is located in the direct path in the multipath connection; the SRB is configured as a split SRB or a duplicated SRB.
  • Step 503 Send a switching indication of the second terminal device and switching information of the second terminal device to the base station through a direct path, where the switching information includes a target cell for switching of the second terminal device.
  • step 303 of the embodiment can refer to the relevant description in step 303 of the embodiment, which will not be repeated here.
  • Step 504 Release the sidelink connection with the second terminal device.
  • step 304 of the embodiment please refer to the relevant description in step 304 of the embodiment, which will not be repeated here.
  • the first terminal device when receiving a switching indication sent by the second terminal device, can manage the wireless resource control RRC connection based on the determination results of whether there is a multipath connection, whether the direct path is available, and whether the direct path in the multipath connection supports the wireless signaling bearer SRB transmission.
  • the direct path connected to the base station can be further used to communicate with the base station. Therefore, there is no need to reestablish the RRC connection, which can effectively avoid the interruption of the remote UE and signaling consumption caused by the RRC connection reconstruction.
  • FIG6 shows a method for processing a radio resource control (RRC) connection according to an embodiment of the present disclosure. As shown in FIG6 , the method is applied to a base station and may include the following steps.
  • RRC radio resource control
  • Step 601 Receive a switching instruction of a second terminal device sent by a first terminal device via a direct path.
  • the second terminal device is a relay terminal device that performs side link communication with the first terminal device, and the second terminal device is used to provide a relay function for the first terminal device to realize communication between the first terminal device and the base station.
  • the first terminal device and the second terminal device can communicate with each other via sidelink unicast.
  • a notification message (Notification Message Sidelink) can be sent to the connected first terminal device via the sidelink, and the notification message carries a switching indication for indicating that the second terminal device has switched its service cell.
  • the first terminal device After receiving the switching indication from the second terminal device and determining that the second terminal device has switched its service cell, the first terminal device can send a switching indication for the second terminal device to the base station.
  • the base station can obtain information about the service cell to which the second terminal device has switched based on the received switching indication, and can further send a candidate cell list to the first terminal device, so that the first terminal device can verify whether the target cell to which the second terminal device switches and the service cell of the direct path belong to the same base station based on the candidate cell list, and determine whether to release the connection with the second terminal device based on the verification result; or, the base station can also determine whether to release the connection with the second terminal device based on the switching indication of the second terminal device sent by the first terminal device, and send indication information to the first terminal device to indicate whether to release the side link connection with the second terminal device.
  • the base station can provide corresponding information to the first terminal device based on the switching indication of the second terminal device sent by the first terminal device through a direct path, so as to facilitate the first terminal device to manage the wireless resource control RRC connection.
  • the direct path connected to the base station can be further used to communicate with the base station. Therefore, there is no need to reestablish the RRC connection, which can effectively avoid the interruption of the remote UE and signaling consumption caused by the RRC connection reconstruction.
  • FIG. 7 shows a method for processing a radio resource control (RRC) connection according to an embodiment of the present disclosure.
  • the method is applied to a base station, based on the embodiment shown in FIG. 6 , as shown in FIG. 7 , and may include the following steps.
  • RRC radio resource control
  • Step 701 Receive switching information of a second terminal device sent by a first terminal device, where the switching information includes a target cell for switching of the second terminal device.
  • the target cell can be acquired by the first terminal device based on the discovery signal of the second terminal device.
  • the first terminal device and the second terminal device can discover each other through a discovery process.
  • the first terminal device can send or receive a discovery signal.
  • the discovery signal carries information such as the service cell identifier and UE identifier of the terminal device.
  • the first terminal device can receive the discovery signal of the second terminal device through the discovery process, and determine the service cell after the second terminal device is switched, that is, the target cell, according to the service cell identifier in the discovery signal.
  • the base station can obtain information that the second terminal device has switched service cells based on the received switching indication and the target cell, and can further send a candidate cell list to the first terminal device, so that the first terminal device can verify whether the target cell switched by the second terminal device and the service cell of the direct path belong to the same base station according to the candidate cell list, and determine whether to release the connection with the second terminal device according to the verification result; or, the base station can also determine whether to release the connection with the second terminal device based on the target cell switched by the second terminal device sent by the first terminal device, and send indication information to the first terminal device to indicate whether to release the side link connection with the second terminal device.
  • the switching indication and the switching information received by the base station may be sent separately by the first terminal device, and the order of sending the switching indication and the switching information is not specifically limited here; as a possible implementation method, the switching indication and the switching information received by the base station may be sent simultaneously by the first terminal device, such as the switching indication may also carry the switching information, etc., and no specific limitation is made to this.
  • the base station can provide corresponding information to the first terminal device based on the target cell for switching of the second terminal device sent by the first terminal device, so as to facilitate the management of the wireless resource control RRC connection by the first terminal device.
  • the direct path connected to the base station can be further utilized to communicate with the base station, so there is no need to reestablish the RRC connection, which can effectively avoid the interruption of the remote UE and signaling consumption caused by the RRC connection reconstruction.
  • FIG8 shows a method for processing a radio resource control RRC connection according to an embodiment of the present disclosure.
  • the method is applied to a base station, based on the embodiments shown in FIG6 , FIG7 and FIG8 , as shown in FIG8 , and may include the following steps.
  • Step 801 Send a specific target list to a first terminal device, where the specific target list carries a cell identifier of a specific target cell.
  • the specific target cell is a candidate cell that belongs to the same base station as the service cell of the direct path.
  • the cells in the candidate cell list and the serving cell of the direct path belong to the same base station, so that the first terminal device can verify whether the target cell and the serving cell of the direct path belong to the same base station according to the candidate cell list, and determine whether to release the connection with the second terminal device according to the verification result.
  • the cell identifier of the target cell can be matched with the cell identifier in the specific target list to determine whether the target cell belongs to the specific target cell.
  • the base station can send a specific target list to the first terminal device, so that the first terminal device manages the wireless resource control RRC connection based on the specific target list.
  • the direct path connected to the base station is further utilized to communicate with the base station. Therefore, there is no need to rebuild the RRC connection, which can effectively avoid the interruption of the remote UE and signaling consumption caused by the RRC connection reconstruction.
  • Figure 9 shows a radio resource control RRC connection processing method according to an embodiment of the present disclosure. The method is applied to a second terminal device, based on the embodiments shown in Figures 6, 7, and 8, as shown in Figure 9, and may include the following steps.
  • Step 801 Send indication information to a first terminal device, where the indication information is used to indicate whether to release a side link connection with a second terminal device.
  • the base station may determine whether to release the connection with the second terminal device based on the switching indication of the second terminal device sent by the first terminal device, and/or the target cell to which the second terminal device switches, and send indication information to the first terminal device for indicating whether to release the sidelink connection with the second terminal device.
  • the purpose of the base station sending the indication information to the first terminal device is to enable the first terminal device to determine whether to release the sidelink connection with the second terminal device in response to the indication information sent by the base station.
  • the first terminal device executes the corresponding release process; if the indication information sent by the base station indicates to maintain the sidelink connection with the second terminal device, the first terminal device does not execute the corresponding release process and maintains the sidelink connection with the second terminal device.
  • the base station can send indication information to the first terminal device to indicate whether to release the side link connection with the second terminal device, so that the first terminal device manages the wireless resource control RRC connection based on the indication information, and when it is determined that a multi-path connection is configured, further communicates with the base station by utilizing the direct path connected to the base station. Therefore, there is no need to reestablish the RRC connection, which can effectively avoid the interruption of the remote UE and signaling consumption caused by the RRC connection reconstruction.
  • FIG10 is a timing diagram of a method for processing a radio resource control RRC connection according to an embodiment of the present disclosure.
  • the method is applied to a communication system, which includes: a first terminal device, a second terminal device, and a base station.
  • the first terminal device may be a terminal device (User Equipment, UE) that is not directly connected to the base station but communicates with the base station through the relay of another terminal device, that is, a remote UE (remote UE);
  • the second terminal device is a relay terminal device that performs side link communication with the first terminal device, and the second terminal device is used to provide a relay function for the first terminal device to realize communication between the first terminal device and the base station.
  • UE User Equipment
  • the second terminal device may send a switching indication to the first terminal device; the first terminal device determines whether to configure a multi-path connection in response to receiving the switching indication sent by the second terminal device; the first terminal device determines not to perform wireless resource control RRC connection reconstruction in response to determining that a multi-path connection is configured and that a direct path in the multi-path connection is available, and/or determines not to perform wireless resource control RRC connection reconstruction in response to determining that a multi-path connection is configured and that the direct path in the multi-path connection supports wireless signaling bearer SRB transmission; the first terminal device sends a switching indication of the second terminal device to the base station via the direct path; the first terminal device sends a target cell for the second terminal device to switch to the base station; the first The terminal device releases the sidelink connection with the second terminal device; the base station sends a specific target list to the first terminal device, the specific target list carries the cell identifier of the specific target cell; the first terminal device determines whether the target cell to which the second terminal device
  • Step 1001 The second terminal device sends a switching instruction to the first terminal device.
  • the second terminal device is a relay terminal device that performs side link communication with the first terminal device.
  • the first terminal device and the second terminal device can communicate with each other via sidelink unicast.
  • a notification message (Notification Message Sidelink) can be sent to the connected first terminal device via the sidelink, and the notification message can carry a switching indication for indicating that the second terminal device has switched its service cell.
  • Step 1002 In response to receiving a switching instruction sent by a second terminal device, the first terminal device determines whether the first terminal device is configured with a multi-path connection.
  • the multi-path connection includes a direct path in which the first terminal device is directly connected to the base station and an indirect path in which the first terminal device is connected to the base station through the second terminal device.
  • the direct path is a link in which the first terminal device directly establishes a communication connection with the base station without passing through the second terminal device;
  • the indirect path is a link in which the first terminal device needs to pass through the relay of the second terminal device to establish a communication connection with the base station.
  • the first terminal device may determine that the second terminal device has a serving cell in response to the received switching indication. Switching, at this time, the first terminal device can further determine whether a multi-path connection with the base station is configured. When a multi-path connection is configured, even if the second terminal device that plays a relay role in the indirect path is switched, the first terminal device can still maintain the RRC connection with the base station through a direct path, so there is no need to rebuild the RRC connection; on the contrary, when a multi-path connection is not configured, that is, only an indirect path is configured between the first terminal device and the base station, RRC connection reconstruction is required.
  • Step 1003 In response to determining that a multi-path connection is configured and that a direct path in the multi-path connection is available, the first terminal device does not reestablish the wireless resource control RRC connection, and/or, in response to determining that a multi-path connection is configured and that the direct path in the multi-path connection supports wireless signaling bearer SRB transmission, the first terminal device does not reestablish the wireless resource control RRC connection.
  • the first terminal device may determine not to perform radio resource control RRC connection reconstruction in response to determining that a multi-path connection is configured and that a direct path in the multi-path connection is available.
  • RRC connection reconstruction in response to determining that a multi-path connection is configured and that a direct path in the multi-path connection is available.
  • the first terminal device may determine not to reestablish the radio resource control RRC connection in response to determining that a multi-path connection is configured and that a direct path in the multi-path connection supports SRB transmission of a radio signaling bearer.
  • the specific implementation process can be found in the relevant description in step 402 of the embodiment, which will not be repeated here.
  • the first terminal device may determine not to perform radio resource control RRC connection reconstruction in response to determining that a multipath connection is configured, determining that a direct path in the multipath connection is available, and determining that the direct path in the multipath connection supports radio signaling bearer SRB transmission.
  • the specific implementation process can be found in the relevant description in step 502 of the embodiment, which will not be repeated here.
  • Step 1004 In response to determining that a multi-path connection is configured, the first terminal device sends a switching indication of the second terminal device to the base station via a direct path.
  • Step 1005 The first terminal device sends a target cell for switching of the second terminal device to the base station.
  • the target cell can be acquired by the first terminal device based on the discovery signal of the second terminal device.
  • the first terminal device and the second terminal device can discover each other through a discovery process.
  • the first terminal device can send or receive a discovery signal.
  • the discovery signal carries information such as the service cell identifier and UE identifier of the terminal device.
  • the first terminal device can receive the discovery signal of the second terminal device through the discovery process, and determine the service cell after the second terminal device is switched, that is, the target cell, according to the service cell identifier in the discovery signal.
  • the service cells of the direct path and the indirect path in the multi-path connection can only belong to the same base station.
  • the first terminal device when it is determined that the first terminal device is configured with a multi-path connection and the direct path in the multi-path connection is available, the first terminal device can send a switching indication of the second terminal device to the base station through the direct path, as well as switching information including the target cell for the switching of the second terminal device, so that the base station can subsequently send a candidate cell list to the first terminal device, so that the first terminal device can verify whether the target cell and the service cell of the direct path belong to the same base station according to the candidate cell list, and determine whether to release the connection with the second terminal device according to the verification result; or the base station can also determine whether to release the connection with the second terminal device based on the switching indication of the second terminal device sent by the first terminal device and the target cell for the switching of the second terminal device, and send indication information to the first terminal device to indicate whether to release the side link connection with the second terminal device.
  • the first terminal device when the first terminal device sends the switching indication and switching information of the second terminal device to the base station, as a possible implementation method, the first terminal device may send the switching indication and switching information of the second terminal device to the base station respectively, and the order of sending the switching indication and the switching information is not specifically limited here; as a possible implementation method, the first terminal device may send the switching indication and switching information of the second terminal device to the base station at the same time, such as the switching indication may also carry the switching information, etc., and there is no specific limitation on this.
  • Step 1006 The first terminal device releases the sidelink connection with the second terminal device.
  • the first terminal device in response to the first terminal device being configured with a multi-path connection, may directly release the side link connection with the second terminal device after determining not to perform radio resource control RRC connection reconstruction.
  • Step 1007 The base station sends a specific target list to the first terminal device, where the specific target list carries the cell identifier of the specific target cell.
  • the specific target cell is a candidate cell that belongs to the same base station as the service cell of the direct path.
  • the base station sends a specific target list (i.e., a candidate cell list) to the first terminal device, so that the first terminal device can verify whether the target cell and the service cell of the direct path belong to the same base station based on the candidate cell list, and determine whether to release the connection with the second terminal device based on the verification result.
  • a specific target list i.e., a candidate cell list
  • Step 1008 the first terminal device determines whether the target cell to which the second terminal device switches belongs to a specific target cell. In response to the target cell belonging to the specific target cell, the first terminal device maintains a sidelink connection with the second terminal device. In response to the target cell not belonging to the specific target cell, the first terminal device releases the sidelink connection with the second terminal device.
  • the cell identifier of the target cell may be matched with the cell identifier in the specific target list to determine whether the target cell belongs to the specific target cell.
  • the specific target cell is a candidate cell that belongs to the same base station as the serving cell of the direct path.
  • Step 1009 The base station sends indication information to the first terminal device, where the indication information is used to indicate whether to release the sidelink connection with the second terminal device.
  • the base station may determine whether to release the connection with the second terminal device based on the switching indication of the second terminal device sent by the first terminal device and/or the target cell to which the second terminal device switches, and send indication information to the first terminal device to indicate whether to release the side link connection with the second terminal device.
  • Step 1010 The first terminal device determines whether to release the sidelink connection with the second terminal device in response to the indication information sent by the base station.
  • the first terminal device after the first terminal device receives the indication information sent by the base station, it can further respond to the indication information to determine whether to release the sidelink connection with the second terminal device. If the indication information sent by the base station indicates to release the sidelink connection with the second terminal device, the first terminal device performs the corresponding release process; if the indication information sent by the base station indicates to maintain the sidelink connection with the second terminal device, the first terminal device does not perform the corresponding release process and maintains the sidelink connection with the second terminal device.
  • the first terminal device can determine whether to configure a multi-path connection when receiving a switching indication sent by the second terminal device, and in response to determining that a multi-path connection is configured, determine not to reestablish the wireless resource control RRC connection.
  • the wireless resource control RRC connection can be managed based on the result of determining whether a multi-path connection is configured.
  • the direct path connected to the base station can be further used to communicate with the base station, so there is no need to reestablish the RRC connection, which can effectively avoid the interruption and signaling consumption of the remote UE caused by the RRC connection reconstruction.
  • the methods provided by the embodiments of the present application are introduced from the perspectives of the first terminal device, the second terminal device, and the base station.
  • the first terminal device, the second terminal device, and the base station may include hardware structures and software modules, and implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules.
  • a function of the above functions may be executed in the form of hardware structures, software modules, or hardware structures plus software modules.
  • the present disclosure also provides a wireless resource control RRC connection processing device. Since the wireless resource control RRC connection processing device provided in the embodiment of the present disclosure corresponds to the wireless resource control RRC connection processing method provided in the above-mentioned embodiments, the implementation method of the wireless resource control RRC connection processing method is also applicable to the wireless resource control RRC connection processing device provided in this embodiment, and will not be described in detail in this embodiment.
  • FIG11 is a schematic structural diagram of a radio resource control RRC connection processing device 1100 provided according to an embodiment of the present disclosure.
  • the radio resource control RRC connection processing device 1100 may be applied to a first terminal device.
  • the apparatus 1100 may include:
  • the processing module 1110 can be used to determine whether to reestablish the radio resource control RRC connection in response to receiving a switching indication sent by a second terminal device, wherein the second terminal device is a relay terminal device that performs side link communication with the first terminal device.
  • the processing module 1110 may be used to determine whether to perform wireless resource control RRC connection reconstruction based on whether the first terminal device is configured with a multi-path connection, wherein the multi-path connection includes a direct path in which the first terminal device is directly connected to the base station and an indirect path in which the first terminal device is connected to the base station via a second terminal device; and in response to determining that the first terminal device is configured with a multi-path connection, the wireless resource control RRC connection reconstruction is not performed.
  • the processing module 1110 may be used to perform radio resource control RRC connection reconstruction in response to determining that the first terminal device is not configured with a multi-path connection.
  • the processing module 1110 in response to determining that the first terminal device is configured with a multi-path connection, does not perform wireless resource control RRC connection reconstruction, including at least one of the following: in response to determining that the first terminal device is configured with a multi-path connection, and determining that a direct path in the multi-path connection is available, does not perform wireless resource control RRC connection reconstruction; in response to determining that the first terminal device is configured with a multi-path connection, and determining that the direct path in the multi-path connection supports wireless signaling bearer SRB transmission, does not perform wireless resource control RRC connection reconstruction.
  • determining that a direct path in a multipath connection is available includes at least one of the following: determining that no failure has occurred in the direct path in the multipath connection; and determining that transmission of the direct path in the multipath connection is not suspended.
  • determining that a direct path in a multipath connection supports SRB transmission of wireless signaling includes at least one of the following: a wireless link layer control protocol RLC of the SRB is located on the direct path in the multipath connection; and the SRB is configured as a split SRB or a duplicated SRB.
  • the apparatus 1100 further includes: a sending module 1120;
  • the sending module 1120 may be configured to send a switching indication of the second terminal device to the base station via a direct path.
  • the sending module 1120 may be used to send switching information of the second terminal device to the base station, where the switching information includes a target cell to which the second terminal device switches.
  • the processing module 1110 may also be used to directly release the side link connection with the second terminal device.
  • the processing module 1110 can be used to determine whether the target cell to which the second terminal device switches belongs to a specific target cell; in response to the target cell belonging to the specific target cell, maintain the side link connection with the second terminal device; in response to the target cell not belonging to the specific target cell, release the side link connection with the second terminal device.
  • the processing module 1110 may be used to match the cell identifier of the target cell with the cell identifiers in the specific target list to determine whether the target cell belongs to the specific target cell.
  • the apparatus 1100 further includes: a receiving module 1130;
  • the receiving module 1130 may be configured to receive a specific target list sent by a base station, wherein the specific target list carries a cell identifier of a specific target cell.
  • the receiving module 1130 may be used to receive indication information sent by a base station, where the indication information is used to indicate whether to release the side link connection with the second terminal device; the processing module 1110 may be used to determine whether to release the side link connection with the second terminal device based on the indication message.
  • Fig. 12 is a schematic diagram of the structure of a radio resource control RRC connection processing device 1200 provided in an embodiment of the present disclosure.
  • the radio resource control RRC connection processing device 1200 can be applied to a second terminal device.
  • the apparatus 1200 may include:
  • the receiving module 1210 may be configured to receive a switching instruction of a second terminal device sent by a first terminal device via a direct path.
  • the receiving module 1210 may be used to receive switching information of a second terminal device sent by a first terminal device, where the switching information includes a target cell to which the second terminal device switches.
  • the apparatus 1200 further includes: a sending module 1220;
  • the sending module 1220 may be configured to send a specific target list to the first terminal device, wherein the specific target list carries a cell identifier of a specific target cell.
  • the sending module 1220 may be used to send indication information to the first terminal device, where the indication information is used to indicate whether to release the side link connection with the second terminal device.
  • FIG. 13 is a schematic diagram of the structure of a communication device 1300 provided in an embodiment of the present application.
  • the communication device 1300 can be a network device, or a user device, or a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the user device to implement the above method.
  • the device can be used to implement the method described in the above method embodiment, and the details can be referred to the description in the above method embodiment.
  • the communication device 1300 may include one or more processors 1301.
  • the processor 1301 may be a general-purpose processor or a dedicated processor, etc.
  • it may be a baseband processor or a central processing unit.
  • the baseband processor may be used to process the communication protocol and communication data
  • the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a computer program, and process the data of the computer program.
  • the communication device 1300 may further include one or more memories 1302, on which a computer program 1304 may be stored, and the processor 1301 executes the computer program 1304 so that the communication device 1300 performs the method described in the above method embodiment.
  • data may also be stored in the memory 1302.
  • the communication device 1300 and the memory 1302 may be provided separately or integrated together.
  • the communication device 1300 may further include a transceiver 1305 and an antenna 1306.
  • the transceiver 1305 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function.
  • the transceiver 1305 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., and is used to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is used to implement a transmitting function.
  • the communication device 1300 may further include one or more interface circuits 1307.
  • the interface circuit 1307 is used to receive code instructions and transmit them to the processor 1301.
  • the processor 1301 executes the code instructions to enable the communication device 1300 to execute the method described in the above method embodiment.
  • the processor 1301 may include a transceiver for implementing receiving and sending functions.
  • the transceiver may It can be a transceiver circuit, or an interface, or an interface circuit.
  • the transceiver circuit, interface, or interface circuit used to realize the receiving and sending functions can be separate or integrated.
  • the above-mentioned transceiver circuit, interface, or interface circuit can be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface, or interface circuit can be used for transmitting or transferring signals.
  • the processor 1301 may store a computer program 1303, which runs on the processor 1301 and enables the communication device 1300 to perform the method described in the above method embodiment.
  • the computer program 1303 may be fixed in the processor 1301, in which case the processor 1301 may be implemented by hardware.
  • the communication device 1300 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiment.
  • the processor and transceiver described in the present application can be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc.
  • the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS N-type metal oxide semiconductor
  • PMOS P-type metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the communication device described in the above embodiments may be a network device or a user device, but the scope of the communication device described in the present application is not limited thereto, and the structure of the communication device may not be limited by FIG. 13.
  • the communication device may be an independent device or may be part of a larger device.
  • the communication device may be:
  • the IC set may also include a storage component for storing data and computer programs;
  • ASIC such as modem
  • the communication device can be a chip or a chip system
  • the communication device can be a chip or a chip system
  • the schematic diagram of the chip structure shown in Figure 14 includes a processor 1401 and an interface 1402.
  • the number of processors 1401 can be one or more, and the number of interfaces 1402 can be multiple.
  • the chip further includes a memory 1403, and the memory 1403 is used to store necessary computer programs and data.
  • the present application also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.
  • the present application also provides a computer program product, which, when executed by a computer, implements any of the above method embodiments. Function.
  • the computer program product includes one or more computer programs.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer program can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer program can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that contains one or more available media integrated.
  • Available media can be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks (SSD)), etc.
  • magnetic media e.g., floppy disks, hard disks, tapes
  • optical media e.g., high-density digital video discs (DVD)
  • DVD digital video discs
  • semiconductor media e.g., solid state disks (SSD)
  • the present disclosure proposes a radio resource control (RRC) connection processing method, which can avoid the interruption and signaling consumption of the remote UE caused by the RRC connection reconstruction when the relay UE has a radio link failure, handover, or cell reselection.
  • RRC radio resource control
  • the remote UE receives the handover instruction sent by the relay UE, if the remote UE is configured with a multipath connection, it is determined not to perform RRC connection reestablishment. Otherwise, RRC connection reestablishment is performed.
  • the switching indication may be indicated in a Notification Message Sidelink message.
  • the remote UE is configured with a multi-path connection and a direct path is available, it is determined not to perform RRC connection reestablishment. Otherwise, RRC connection reestablishment is performed.
  • a direct path is determined to be available by:
  • the remote UE is configured with a multi-path connection and the SRB can be transmitted through a direct path, it is determined not to perform RRC connection reestablishment.
  • the SRB can be transmitted via the direct path by the following conditions:
  • i.SRB's RLC is located on the direct path
  • SRB is configured as split SRB or duplicated SRB
  • the remote UE reports the relay UE handover indication via a direct path.
  • the relay UE switching indication may be reported via an RRC message.
  • the remote UE can also report the target cell to which the relay UE is switched.
  • the remote UE releases the sidelink connection with the relay UE.
  • the remote UE determines that the handover target cell of the relay UE belongs to the candidate cell (ie, the specific target cell), and continues to maintain the sidelink connection with the relay UE, otherwise, releases the sidelink connection with the relay UE.
  • the remote UE obtains a candidate cell list (ie, a specific target list), and the candidate cell list is provided by the base station.
  • a candidate cell list ie, a specific target list
  • the candidate cell list carries a cell identifier, and the cell and the serving cell of the direct path belong to the same base station.
  • the present disclosure has the following beneficial technical effects: based on the determination result of whether there is a multi-path connection, the management of the wireless resource control RRC connection can be performed; when it is determined that a multi-path connection is configured, the direct path connected to the base station can be further utilized to communicate with the base station, so there is no need to reestablish the RRC connection, and the interruption and signaling consumption of the remote UE caused by the RRC connection reconstruction can be effectively avoided.
  • At least one in the present application can also be described as one or more, and a plurality can be two, three, four or more, which is not limited in the present application.
  • the technical features in the technical feature are distinguished by “first”, “second”, “third”, “A”, “B”, “C” and “D”, etc., and there is no order of precedence or size between the technical features described by the "first”, “second”, “third”, “A”, “B”, “C” and “D”.
  • machine-readable medium and “computer-readable medium” refer to any computer program product, apparatus, and/or device (e.g., disk, optical disk, memory, programmable logic device (PLD)) for providing machine instructions and/or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal.
  • machine-readable signal refers to any signal for providing machine instructions and/or data to a programmable processor.
  • the systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components.
  • the components of the system may be interconnected by any form or medium of digital data communication (e.g., a communications network). Examples of communications networks include: a local area network (LAN), a wide area network (WAN), and the Internet.
  • a computer system may include clients and servers.
  • Clients and servers are generally remote from each other and usually interact through a communication network.
  • the relationship of client and server is generated by computer programs running on respective computers and having a client-server relationship to each other.

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Abstract

本公开提出了一种无线资源控制RRC连接处理方法及装置，涉及通信技术领域，根据本公开实施例提供了的无线资源控制RRC连接处理方法，其中，第一终端设备可响应于接收到第二终端设备发送的切换指示，确定是否进行无线资源控制RRC连接重建，其中，所述第二终端设备为与所述第一终端设备进行侧行链路通信的中继终端设备。本公开可在中继UE发生无线链路失败、切换、小区重选时，避免RRC连接重建导致远端UE的中断和信令消耗。

Description

无线资源控制RRC连接处理方法及装置 技术领域
本公开涉及通信技术领域，尤其涉及到一种无线资源控制RRC连接处理方法及装置。
背景技术
为了支持终端设备(User Equipment,UE)与终端设备之间的直接通信，引入了侧行链路(SideLink,SL)传输通信方式，在SideLink上支持三种传输方式，单播，组播和广播。一个UE可以不直接与基站连接而通过另外一个UE的中继实现与基站的通信，其中与基站没有连接的UE称为远端UE(remote UE)，提供中继功能的UE称为中继UE(relay UE)，远端UE与中继UE之间通过SideLink单播通信。当中继UE发生无线链路失败、切换、小区重选时，远端UE需要触发无线资源控制(Radio Resource Control，RRC)连接重建，但进行RRC连接重建会导致远端UE的中断和信令消耗。
发明内容
本公开提供了一种无线资源控制RRC连接处理方法及装置，可在中继UE发生无线链路失败、切换、小区重选时，避免RRC连接重建导致远端UE的中断和信令消耗。
本公开的第一方面实施例提供了一种无线资源控制RRC连接处理方法，应用于第一终端设备，所述方法包括：
响应于接收到第二终端设备发送的切换指示，确定是否进行无线资源控制RRC连接重建，其中，所述第二终端设备为与所述第一终端设备进行侧行链路通信的中继终端设备。
在本公开的一些实施例中，所述确定是否进行无线资源控制RRC连接重建，包括：
基于所述第一终端设备是否配置有多路径连接，确定是否进行无线资源控制RRC连接重建，其中，所述多路径连接包括第一终端设备与基站直接连接的直接路径和第一终端设备通过所述第二终端设备与基站连接的间接路径；并且
响应于确定所述第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建。
在本公开的一些实施例中，所述基于所述第一终端设备是否配置有多路径连接，确定是否进行无线资源控制RRC连接重建，还包括：响应于确定所述第一终端设备未配置有多路径连接，进行无线资源控制RRC连接重建。
在本公开的一些实施例中，所述响应于确定所述第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建，包括以下至少一项：
响应于确定所述第一终端设备配置有多路径连接，且确定所述多路径连接中的直接路径可用，不进行无线资源控制RRC连接重建；
响应于确定所述第一终端设备配置有多路径连接，且确定所述多路径连接中的直接路径支持无线信令承载SRB传输，不进行无线资源控制RRC连接重建。
在本公开的一些实施例中，所述确定所述多路径连接中的直接路径可用，包括以下至少之一：
确定所述多路径连接中的直接路径未发生失败；
确定所述多路径连接中的直接路径的传输未被暂停。
在本公开的一些实施例中，所述确定所述多路径连接中的直接路径支持无线信令承载SRB传输，包括以下至少之一：
SRB的无线链路层控制协议RLC位于所述多路径连接中的直接路径；
SRB配置为split SRB或duplicated SRB。
在本公开的一些实施例中，所述方法还包括：
通过所述直接路径向所述基站发送所述切换指示。
在本公开的一些实施例中，所述方法还包括：
向所述基站发送所述第二终端设备的切换信息，所述切换信息中包括所述第二终端设备切换的目标小区。
在本公开的一些实施例中，在所述响应于确定所述第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建之后，所述方法还包括：
直接释放与所述第二终端设备的侧行链路连接。
在本公开的一些实施例中，在所述响应于确定所述第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建之后，所述方法还包括：
确定所述第二终端设备切换的目标小区是否属于特定目标小区；
响应于所述目标小区属于特定目标小区，保持与所述第二终端设备的侧行链路连接；
响应于所述目标小区不属于特定目标小区，释放与所述第二终端设备的侧行链路连接。
在本公开的一些实施例中，所述确定所述第二终端设备切换的目标小区是否属于特定目标小区，包括：
将所述目标小区的小区标识与特定目标列表中的小区标识匹配，确定所述目标小区是否属于特定目标小区。
在本公开的一些实施例中，所述方法还包括：
接收所述基站发送的所述特定目标列表，所述特定目标列表中携带有所述特定目标小区的小区标识。
在本公开的一些实施例中，在所述响应于确定所述第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建之后，所述方法还包括：
接收基站发送的指示信息，所述指示信息用于指示是否释放与所述第二终端设备的侧行链路连接；
根据所述指示消息确定是否释放与所述第二终端设备的侧行链路连接。
本公开的第二方面实施例提供了一种无线资源控制RRC连接处理方法，应用于基站，所述方法包括：
接收第一终端设备通过直接路径发送的第二终端设备的切换指示。
在本公开的一些实施例中，所述方法还包括：
接收所述第一终端设备发送的所述第二终端设备的切换信息，所述切换信息中包括所述第二终端设备切换的目标小区。
在本公开的一些实施例中，所述方法还包括：
向所述第一终端设备发送特定目标列表，所述特定目标列表中携带有特定目标小区的小区标识。
在本公开的一些实施例中，所述方法还包括：
向所述第一终端设备发送指示信息，所述指示信息用于指示是否释放与所述第二终端设备的侧行链路连接。
本公开的第三方面实施例提供了一种无线资源控制RRC连接处理装置，应用于第一终端设备，所述装置包括：
处理模块，用于响应于接收到第二终端设备发送的切换指示，确定是否进行无线资源控制RRC连接重建，其中，所述第二终端设备为与所述第一终端设备进行侧行链路通信的中继终端设备。
本公开的第四方面实施例提供了一种无线资源控制RRC连接处理装置，所述装置应用于基站，所述装置包括：
接收模块，用于接收第一终端设备通过直接路径发送的第二终端设备的切换指示。
本公开的第五方面实施例提供了一种通信设备，该通信设备包括：收发器；存储器；处理器，分别与收发器及存储器连接，配置为通过执行存储器上的计算机可执行指令，控制收发器的无线信号收发，并能够实现如本公开第一方面实施例或第二方面实施例的方法。
本公开的第六方面实施例提供了一种计算机存储介质，其中，计算机存储介质存储有计算机可执行指令；计算机可执行指令被处理器执行后，能够实现如本公开第一方面实施例或第二方面实施例的方法。
本公开的第七方面实施例提供了一种通信系统，该通信系统包括第一终端设备、第二终端设备、基站，其中：所述第一终端设备被配置为执行如本公开第一方面实施例的方法；所述基站被配置为执行本 公开第二方面实施例的方法。
本公开实施例提供的一种无线资源控制RRC连接处理方法及装置，第一终端设备可在收到第二终端设备发送的切换指示时，确定是否进行无线资源控制RRC连接重建。通过本公开实施例，可基于是否有多径连接的确定结果，进行无线资源控制RRC连接的管理，在确定配置有多路径连接时，可利用与基站连接的直接路径与基站进行通信，因此不需要进行RRC连接重建，能够有效避免RRC连接重建导致远端UE的中断和信令消耗。
本公开附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
本公开上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：
图1为根据本公开实施例的一种无线资源控制RRC连接处理方法的流程示意图；
图2为根据本公开实施例的一种无线资源控制RRC连接处理方法的流程示意图；
图3为根据本公开实施例的一种无线资源控制RRC连接处理方法的流程示意图；
图4为根据本公开实施例的一种无线资源控制RRC连接处理方法的流程示意图；
图5为根据本公开实施例的一种无线资源控制RRC连接处理方法的流程示意图；
图6为根据本公开实施例的一种无线资源控制RRC连接处理方法的流程示意图；
图7为根据本公开实施例的一种无线资源控制RRC连接处理方法的流程示意图；
图8为根据本公开实施例的一种无线资源控制RRC连接处理方法的流程示意图；
图9为根据本公开实施例的一种无线资源控制RRC连接处理方法的流程示意图；
图10为根据本公开实施例的一种无线资源控制RRC连接处理方法的时序图；
图11为根据本公开实施例的一种无线资源控制RRC连接处理装置的框图；
图12为根据本公开实施例的一种无线资源控制RRC连接处理装置的框图；
图13为根据本公开实施例的一种通信装置的结构示意图；
图14为本公开实施例提供的一种芯片的结构示意图。
具体实施方式
下面详细描述本公开的实施例，实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
为了支持终端设备(User Equipment,UE)与终端设备之间的直接通信，引入了侧行链路(SideLink,SL)传输通信方式，在SideLink上支持三种传输方式，单播，组播和广播。一个UE可以不直接与基站连接而通过另外一个UE的中继实现与基站的通信，其中与基站没有连接的UE称为远端UE(remote UE)，提供中继功能的UE称为中继UE(relay UE)，远端UE与中继UE之间通过SideLink单播通信。当中继UE发生无线链路失败、切换、小区重选时，远端UE需要触发无线资源控制(Radio Resource Control，RRC)连接重建，但进行RRC连接重建会导致远端UE的中断和信令消耗。
为此，本公开提出了一种无线资源控制RRC连接处理方法及装置，可在中继UE发生无线链路失败、切换、小区重选时，避免RRC连接重建导致远端UE的中断和信令消耗。
下面结合附图对本申请所提供的无线资源控制RRC连接处理方法及装置进行详细地介绍。
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面 相一致的装置和方法的例子。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
图1示出了根据本公开实施例的一种无线资源控制RRC连接处理方法，如图1所示，该方法应用于第一终端设备，第一终端设备可为不直接与基站连接，而通过另外一个中继终端设备与基站进行通信的终端设备(User Equipment,UE)，即远端UE(remote UE)，且可以包括以下步骤。
步骤101、响应于接收到第二终端设备发送的切换指示，确定是否进行无线资源控制RRC连接重建。
其中，第二终端设备为与第一终端设备进行侧行链路通信的中继终端设备；切换指示用于指示第二终端设备发生了服务小区的切换。
对于本公开实施例，在具体的应用场景中，第一终端设备和第二终端设备之间可通过侧行链路单播通信。当第二终端设备发生无线链路失败，切换，小区重选等，造成无线资源控制(Radio Resource Control，RRC)连接失败时，可通过侧行链路向连接的第一终端设备发送通知消息(Notification Message Sidelink)，在该通知消息中可携带用于指示第二终端设备发生服务小区切换的切换指示。相应的，第一终端设备可响应于接收到的切换指示，确定第二终端设备发生了服务小区切换，此时第一终端设备可进一步确定是否进行无线资源控制RRC连接重建。作为一种可能的实现方式，第一终端设备在确定第二终端设备的切换对第一终端设备与基站之间的通信连接不构成影响时，可不进行无线资源控制RRC的连接重建；作为一种可能的实现方式，第一终端设备在确定第二终端设备的切换对第一终端设备与基站之间的通信连接构成影响(如第二终端设备的切换，造成第一终端设备与基站无法正常继续通信连接)时，需要进行无线资源控制RRC的连接重建。
综上，根据本公开提供的一种无线资源控制RRC连接处理方法，第一终端设备可在收到第二终端设备发送的切换指示时，确定是否进行无线资源控制RRC连接重建。通过本公开实施例，第一终端设备在接收到第二终端设备发送的切换指示后，进行无线资源控制RRC连接重建的判断过程，可在第二终端设备的切换对第一终端设备与基站之间的通信连接不构成影响时，不进行RRC连接重建，能够有效避免RRC连接重建导致第一终端设备的中断和信令消耗。
图2示出了根据本公开实施例的一种无线资源控制RRC连接处理方法，该方法应用于第一终端设备，基于图1所示实施例，如图2所示，且可以包括以下步骤。
步骤201、响应于接收到第二终端设备发送的切换指示，确定第一终端设备是否配置多路径连接。
其中，多路径连接包括第一终端设备与基站直接连接的直接路径和第一终端设备通过第二终端设备与基站连接的间接路径。直接路径为第一终端设备不经过第二终端设备，直接与基站建立通信连接的链路；间接路径为第一终端设备需要经过第二终端设备的中继，与基站建立通信连接的链路。
在具体的应用场景中，第一终端设备可响应于接收到的切换指示，确定第二终端设备发生了服务小 区切换，此时第一终端设备可进一步确定是否配置有与基站的多路径连接，基于第一终端设备是否配置有多路径连接，确定是否进行无线资源控制RRC连接重建。当配置有多路径连接时，即使间接路径中起到中继作用的第二终端设备发生了切换，第一终端设备还可以通过直接路径保持与基站的RRC连接，因此不需要进行RRC连接重建；反之，当未配置多路径连接时，即第一终端设备与基站之间只配置有间接路径，此时需要进行RRC连接重建。
步骤202、响应于确定第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建。
本公开中的技术方案，第一终端设备中配置有与基站之间的多路径连接，第一终端设备的承载可以只通过直接路径传输，即直接承载(Direct Bearer)；第一终端设备的承载也可以只通过间接路径传输，称为间接承载(Indirect Bearer)；第一终端设备的承载也可以同时通过直接路径和间接路径传输，称为多路径承载(Multipath Bearer)。第一终端设备可以同时通过直接路径和间接路径与网络保持连接，能够提高传输速率和传输可靠性。当第一终端设备配置了多路径连接，第一终端设备已经与服务小区和服务中继建立了直接路径和间接路径的连接，即使中继UE(即第二终端设备)发生了切换，第一终端设备还可以通过直接路径保持与网络的RRC连接，因此不需要进行RRC连接重建，能够避免第一终端设备在第二终端设备发生了切换时，进行RRC连接重建导致第一终端设备的通信中断和信令消耗。
步骤203、响应于确定第一终端设备未配置有多路径连接，进行无线资源控制RRC连接重建。
综上，根据本公开提供的一种无线资源控制RRC连接处理方法，第一终端设备可在收到第二终端设备发送的切换指示时，确定是否配置多路径连接，响应于确定配置有多路径连接，确定不进行无线资源控制RRC连接重建。第一终端设备可在收到第二终端设备发送的切换指示时，确定是否配置多路径连接，响应于确定未配置有多路径连接，需要进行无线资源控制RRC连接重建。通过本公开实施例，可基于是否有多径连接的确定结果，进行无线资源控制RRC连接的管理，在确定配置有多路径连接时，可进一步利用与基站连接的直接路径与基站进行通信，因此不需要进行RRC连接重建，能够有效避免RRC连接重建导致远端UE的中断和信令消耗。
图3示出了根据本公开实施例的一种无线资源控制RRC连接处理方法，该方法应用于第一终端设备，基于图1、图2所示实施例，如图3所示，且可以包括以下步骤。
步骤301、响应于接收到第二终端设备发送的切换指示，确定第一终端设备是否配置多路径连接。
对于本公开实施例，其具体实现过程可参见实施例步骤201中的相关描述，在此不再赘述。
步骤302、响应于确定第一终端设备配置有多路径连接，且确定多路径连接中的直接路径可用，不进行无线资源控制RRC连接重建。
对于本公开实施例，第一终端设备在确定配置有多路径连接后，为保证直接路径能够用于与基站的正常通信，还可进一步确定多路径连接中的直接路径是否可用，在确定多路径连接中的直接路径可用于与基站的通信时，确定不进行无线资源控制RRC连接重建；反之，在确定多路径连接中的直接路径不可用时，需要进行RRC连接重建。
其中，确定多路径连接中的直接路径可用，可包括以下至少之一：确定多路径连接中的直接路径未发生失败，该失败包括无线链路失败；确定多路径连接中的直接路径的传输未被暂停。
相应的，在确定多路径连接中的直接路径是否可用时：
作为一种可能的实现方式，可确定多路径连接中的直接路径的数据传输是否正常，在存在失败或发生多次累计传输失败等传输异常时，可确定该直接链路不可用于与基站的通信，需要进行无线资源控制 RRC连接重建；在确定多路径连接中的直接路径未发生失败时，可确定该直接链路可用于与基站的通信，不需要进行无线资源控制RRC连接重建。
作为一种可能的实现方式，可确定多路径连接中的直接路径的传输是否被暂停，在确定传输被暂停时，可确定该直接链路不可用于与基站的通信，需要进行无线资源控制RRC连接重建；在确定多路径连接中的直接路径的传输未被暂停时，可确定该直接链路可用于与基站的通信，不需要进行无线资源控制RRC连接重建。
作为一种可能的实现方式，可确定多路径连接中的直接路径的数据传输是否正常以及确定多路径连接中的直接路径的传输是否被暂停，在确定该直接路径发生失败和/或该直接路径的传输被暂停时，可确定该直接链路不可用于与基站的通信，需要进行无线资源控制RRC连接重建；在确定该直接路径未发生失败且该直接路径的传输未被暂停时，可确定该直接链路可用于与基站的通信，不需要进行无线资源控制RRC连接重建。
步骤303、通过直接路径向基站发送第二终端设备的切换指示，以及第二终端设备的切换信息，切换信息中包括第二终端设备切换的目标小区。
其中，目标小区可由第一终端设备基于第二终端设备的发现信号获取。在具体的应用场景中，第一终端设备和第二终端设备之间可以通过发现过程进行彼此的发现，在发现过程启动后，第一终端设备可以发送或者接收发现信号。发现信号中携带终端设备的服务小区标识，UE标识等信息。第一终端设备在接收到第二终端设备的切换指示，确定第二终端设备发生了服务小区的切换后，可通过发现过程接收第二终端设备的发现信号，根据发现信号中的服务小区标识确定第二终端设备切换后的服务小区，即目标小区。
多路径连接中的直接路径和间接路径的服务小区只能属于同一个基站。对于本公开实施例，在确定第一终端设备配置有多路径连接，且确定多路径连接中的直接路径可用时，第一终端设备可通过直接路径向基站发送第二终端设备的切换指示，以及包括第二终端设备切换的目标小区的切换信息，以便后续基站向第一终端设备发送候选小区列表，候选小区列表中的小区与直接路径的服务小区属于相同的基站，可根据候选小区列表验证目标小区与直接路径的服务小区是否属于相同的基站，并根据验证结果确定是否释放与第二终端设备的连接；或者基站还可基于第一终端设备发送的第二终端设备的切换指示，以及第二终端设备切换的目标小区，确定是否释放与第二终端设备的连接，并向第一终端设备发送用于指示是否释放与第二终端设备的侧行链路连接的指示信息。需要说明的是，第一终端设备在向基站发送第二终端设备的切换指示以及切换信息时，作为一种可能的实现方式，第一终端设备可向基站分别发送第二终端设备的切换指示以及切换信息，针对切换指示以及切换信息的发送顺序在此不进行具体的限定；作为一种可能的实现方式，第一终端设备可向基站同时发送第二终端设备的切换指示以及切换信息，如可在切换指示中同时携带有切换信息等，对此不进行具体的限定。
步骤304、释放与第二终端设备的侧行链路连接。
对于本公开实施例，作为一种可能的实现方式，响应于第一终端设备配置有多路径连接，第一终端设备确定不进行无线资源控制RRC连接重建后，可直接释放与第二终端设备的侧行链路连接。
对于本公开实施例，作为一种可能的实现方式，第一终端设备在确定不进行无线资源控制RRC连接重建后，可确定第二终端设备切换的目标小区是否属于特定目标小区；响应于目标小区属于特定目标小区，保持与第二终端设备的侧行链路连接；响应于目标小区不属于特定目标小区，释放与第二终端设备的侧行链路连接。具体的，可接收基站发送的特定目标列表(即候选小区列表)，特定目标列表中携带有特定目标小区的小区标识；在确定第二终端设备切换的目标小区是否属于特定目标小区时，可将目标小区的小区标识与特定目标列表中的小区标识匹配，确定目标小区是否属于特定目标小区。其中，特定 目标小区为与直接路径的服务小区属于相同基站的候选小区。
对于本公开实施例，作为一种可能的实现方式，第一终端设备在确定不进行无线资源控制RRC连接重建后，可接收基站发送的指示信息，指示信息用于指示是否释放与第二终端设备的侧行链路连接。第一终端设备进一步响应于基站发送的指示信息，确定是否释放与第二终端设备的侧行链路连接。若基站发送的指示信息中指示释放与第二终端设备的侧行链路连接，第一终端设备则执行相应的释放过程；若基站发送的指示信息中指示保持与第二终端设备的侧行链路连接，第一终端设备则不执行相应的释放过程，保持与第二终端设备的侧行链路连接。
综上，根据本公开提供的一种无线资源控制RRC连接处理方法，第一终端设备可在收到第二终端设备发送的切换指示时，基于是否有多径连接以及直接路径是否可用的确定结果，进行无线资源控制RRC连接的管理，在确定配置有多路径连接且多路径连接中的直接路径可用时，可进一步利用与基站连接的直接路径与基站进行通信，因此不需要进行RRC连接重建，能够有效避免RRC连接重建导致远端UE的中断和信令消耗。
图4示出了根据本公开实施例的一种无线资源控制RRC连接处理方法，该方法应用于第一终端设备，基于图1、2、3所示实施例，如图4所示，且可以包括以下步骤。
步骤401、响应于收到第二终端设备发送的切换指示，确定第一终端设备是否配置多路径连接。
对于本公开实施例，其具体实现过程可参见实施例步骤201中的相关描述，在此不再赘述。
步骤402、响应于确定第一终端设备配置有多路径连接，且确定多路径连接中的直接路径支持无线信令承载SRB传输，不进行无线资源控制RRC连接重建。
在具体的应用场景中，基站可以将无线信令承载(Signaling Radio Bearer，SRB)的无线链路层控制协议(Radio Link Control，RLC)配置在直接路径或者间接路径，通过直接路径或者间接路径传输。也可以将SRB与两个RLC连接，两个RLC位于直接路径和间接路径，此时SRB可以通过直接路径和间接路径同时传输，包括split SRB或duplicated SRB，在split SRB和duplicated SRB中，SRB可以连接两个RLC，分别位于直接链路和间接链路。
对于本公开实施例，第一终端设备在确定配置有多路径连接后，为保证直接路径能够用于与基站的正常通信，还可进一步确定多路径连接中的直接路径是否支持无线信令承载SRB传输，在确定多路径连接中的直接路径支持无线信令承载SRB传输时，不进行无线资源控制RRC连接重建；反之，在确定多路径连接中的直接路径不支持无线信令承载SRB传输时，需要进行RRC连接重建。
其中，确定多路径连接中的直接路径支持无线信令承载SRB传输，包括以下至少之一：SRB的无线链路层控制协议RLC位于多路径连接中的直接路径；SRB配置为split SRB或duplicated SRB。
相应的，在确定多路径连接中的直接路径是否支持无线信令承载SRB传输时：
作为一种可能的实现方式，可确定SRB的无线链路层控制协议RLC是否位于多路径连接中的直接路径，在确定SRB的无线链路层控制协议RLC没有位于多路径连接中的直接路径时，可确定该直接路径不支持无线信令承载SRB传输，需要进行无线资源控制RRC连接重建；在确定SRB的无线链路层控制协议RLC位于多路径连接中的直接路径时，可确定该直接路径支持无线信令承载SRB传输，不需要进行无线资源控制RRC连接重建。
作为一种可能的实现方式，可确定SRB是否配置为split SRB或duplicated SRB，在确定SRB未配置为split SRB或duplicated SRB时，可确定该直接路径不支持无线信令承载SRB传输，需要进行 无线资源控制RRC连接重建；在确定SRB配置为split SRB或duplicated SRB时，可确定该直接路径支持无线信令承载SRB传输，不需要进行无线资源控制RRC连接重建。
作为一种可能的实现方式，可确定SRB的无线链路层控制协议RLC是否位于多路径连接中的直接路径，以及确定SRB是否配置为split SRB或duplicated SRB，在确定SRB的无线链路层控制协议RLC没有位于多路径连接中的直接路径，且确定SRB未配置为split SRB或duplicated SRB时，可确定该直接路径不支持无线信令承载SRB传输，需要进行无线资源控制RRC连接重建；在确定SRB的无线链路层控制协议RLC位于多路径连接中的直接路径，和/或确定SRB配置为split SRB或duplicated SRB时，可确定该直接路径支持无线信令承载SRB传输，不需要进行无线资源控制RRC连接重建。
步骤403、通过直接路径向基站发送第二终端设备的切换指示，以及第二终端设备的切换信息，切换信息中包括第二终端设备切换的目标小区。
对于本公开实施例，其具体实现过程可参见实施例步骤303中的相关描述，在此不再赘述。
步骤404、释放与第二终端设备的侧行链路连接。
对于本公开实施例，其具体实现过程可参见实施例步骤304中的相关描述，在此不再赘述。
综上，根据本公开提供的一种无线资源控制RRC连接处理方法，第一终端设备可在收到第二终端设备发送的切换指示时，基于是否有多径连接以及多路径连接中的直接路径是否支持无线信令承载SRB传输的确定结果，进行无线资源控制RRC连接的管理，在确定配置有多路径连接且多路径连接中的直接路径支持无线信令承载SRB传输时，可进一步利用与基站连接的直接路径与基站进行通信，因此不需要进行RRC连接重建，能够有效避免RRC连接重建导致远端UE的中断和信令消耗。
图5示出了根据本公开实施例的一种无线资源控制RRC连接处理方法，该方法应用于第一终端设备，基于图1、图2、图3、图4所示实施例，如图5所示，且可以包括以下步骤。
步骤501、响应于收到第二终端设备发送的切换指示，确定第一终端设备是否配置多路径连接。
对于本公开实施例，其具体实现过程可参见实施例步骤201中的相关描述，在此不再赘述。
步骤502、响应于确定第一终端设备配置有多路径连接，确定多路径连接中的直接路径可用以及确定多路径连接中的直接路径支持无线信令承载SRB传输，不进行无线资源控制RRC连接重建。
对于本公开实施例，第一终端设备在确定配置有多路径连接后，为保证直接路径能够用于与基站的正常通信，还可进一步确定多路径连接中的直接路径是否可用以及确定多路径连接中的直接路径是否支持无线信令承载SRB传输，在确定多路径连接中的直接路径可用于与基站的通信以及多路径连接中的直接路径支持无线信令承载SRB传输时，确定不进行无线资源控制RRC连接重建；反之，在确定多路径连接中的直接路径不可用，和/或确定多路径连接中的直接路径不支持无线信令承载SRB传输时，需要进行RRC连接重建。
其中，确定多路径连接中的直接路径可用，包括以下至少之一：确定多路径连接中的直接路径未发生失败，该失败包括无线链路失败；确定多路径连接中的直接路径的传输未被暂停。其具体实现过程可参见实施例步骤302中的相关描述，在此不再赘述。
确定多路径连接中的直接路径支持无线信令承载SRB传输，包括以下至少之一：SRB的无线链路层控制协议RLC位于多路径连接中的直接路径；SRB配置为split SRB或duplicated SRB。其具体实现过程可参见实施例步骤402中的相关描述，在此不再赘述。
步骤503、通过直接路径向基站发送第二终端设备的切换指示，以及第二终端设备的切换信息，切换信息中包括第二终端设备切换的目标小区。
对于本公开实施例，其具体实现过程可参见实施例步骤303中的相关描述，在此不再赘述。
步骤504、释放与第二终端设备的侧行链路连接。
对于本公开实施例，其具体实现过程可参见实施例步骤304中的相关描述，在此不再赘述。
综上，根据本公开提供的一种无线资源控制RRC连接处理方法，第一终端设备可在收到第二终端设备发送的切换指示时，基于是否有多径连接、直接路径是否可用，以及多路径连接中的直接路径是否支持无线信令承载SRB传输的确定结果，进行无线资源控制RRC连接的管理，在确定配置有多路径连接且直接路径可用且直接路径支持无线信令承载SRB传输时，可进一步利用与基站连接的直接路径与基站进行通信，因此不需要进行RRC连接重建，能够有效避免RRC连接重建导致远端UE的中断和信令消耗。
图6示出了根据本公开实施例的一种无线资源控制RRC连接处理方法，如图6所示，该方法应用于基站，且可以包括以下步骤。
步骤601、接收第一终端设备通过直接路径发送的第二终端设备的切换指示。
其中，第二终端设备为与第一终端设备进行侧行链路通信的中继终端设备，第二终端设备用于为第一终端设备提供中继功能，以实现第一终端设备与基站的通信。
在具体的应用场景中，第一终端设备和第二终端设备之间可通过侧行链路单播通信。当第二终端设备发生无线链路失败，切换，小区重选等，造成无线资源控制(Radio Resource Control，RRC)连接失败时，可通过侧行链路向连接的第一终端设备发送通知消息(Notification Message Sidelink)，在该通知消息中携带用于指示第二终端设备发生服务小区切换的切换指示。第一终端设备在接收到第二终端设备的切换指示，确定第二终端设备发生了服务小区的切换后，可向基站发送第二终端设备的切换指示。
对于本公开实施例，基站依据接收到的切换指示能够获取到第二终端设备已切换服务小区的信息，可进一步向第一终端设备发送候选小区列表，使第一终端设备能够根据候选小区列表验证第二终端设备切换的目标小区与直接路径的服务小区是否属于相同的基站，并根据验证结果确定是否释放与第二终端设备的连接；或者，基站还可基于第一终端设备发送的第二终端设备的切换指示，确定是否释放与第二终端设备的连接，并向第一终端设备发送用于指示是否释放与第二终端设备的侧行链路连接的指示信息。
综上，根据本公开提供的一种无线资源控制RRC连接处理方法，基站可依据接收到的第一终端设备通过直接路径发送的第二终端设备的切换指示，为第一终端设备提供相应的信息，便于第一终端设备进行无线资源控制RRC连接的管理，在确定配置有多路径连接时，可进一步利用与基站连接的直接路径与基站进行通信，因此不需要进行RRC连接重建，能够有效避免RRC连接重建导致远端UE的中断和信令消耗。
图7示出了根据本公开实施例的一种无线资源控制RRC连接处理方法，该方法应用于基站，基于图6所示实施例，如图7所示，且可以包括以下步骤。
步骤701、接收第一终端设备发送的第二终端设备的切换信息，切换信息中包括第二终端设备切换的目标小区。
其中，目标小区可由第一终端设备基于第二终端设备的发现信号获取。在具体的应用场景中，第一终端设备和第二终端设备之间可以通过发现过程进行彼此的发现，在发现过程启动后，第一终端设备可以发送或者接收发现信号。发现信号中携带终端设备的服务小区标识，UE标识等信息。第一终端设备在接收到第二终端设备的切换指示，确定第二终端设备发生了服务小区的切换后，可通过发现过程接收第二终端设备的发现信号，根据发现信号中的服务小区标识确定第二终端设备切换后的服务小区，即目标小区。
对于本公开实施例，基站依据接收到的切换指示以及目标小区能够获取到第二终端设备已切换服务小区的信息，可进一步向第一终端设备发送候选小区列表，使第一终端设备能够根据候选小区列表验证第二终端设备切换的目标小区与直接路径的服务小区是否属于相同的基站，并根据验证结果确定是否释放与第二终端设备的连接；或者，基站还可基于第一终端设备发送的第二终端设备切换的目标小区，确定是否释放与第二终端设备的连接，并向第一终端设备发送用于指示是否释放与第二终端设备的侧行链路连接的指示信息。
需要说明的是，对于实施例步骤601和701，作为一种可能的实现方式，基站接收到的切换指示以及切换信息，可由第一终端设备分别发送，针对切换指示以及切换信息的发送顺序在此不进行具体的限定；作为一种可能的实现方式，基站接收到的切换指示以及切换信息，可由第一终端设备同时发送，如可在切换指示中同时携带有切换信息等，对此不进行具体的限定。
综上，根据本公开提供的一种无线资源控制RRC连接处理方法，基站可依据接收到的第一终端设备发送的第二终端设备切换的目标小区，为第一终端设备提供相应的信息，便于第一终端设备进行无线资源控制RRC连接的管理，在确定配置有多路径连接时，可进一步利用与基站连接的直接路径与基站进行通信，因此不需要进行RRC连接重建，能够有效避免RRC连接重建导致远端UE的中断和信令消耗。
图8示出了根据本公开实施例的一种无线资源控制RRC连接处理方法，该方法应用于基站，基于图6、图7以及图8所示实施例，如图8所示，且可以包括以下步骤。
步骤801、向第一终端设备发送特定目标列表，特定目标列表中携带有特定目标小区的小区标识。
其中，特定目标小区为与直接路径的服务小区属于相同基站的候选小区。
对于本公开实施例，通过向第一终端设备发送特定目标列表(即候选小区列表)，候选小区列表中的小区与直接路径的服务小区属于相同的基站，使第一终端设备能够根据候选小区列表验证目标小区与直接路径的服务小区是否属于相同的基站，并根据验证结果确定是否释放与第二终端设备的连接。具体的，可将目标小区的小区标识与特定目标列表中的小区标识匹配，确定目标小区是否属于特定目标小区。
综上，根据本公开提供的一种无线资源控制RRC连接处理方法，基站可向第一终端设备发送特定目标列表，以便第一终端设备基于特定目标列表进行无线资源控制RRC连接的管理，在确定配置有多路径连接时，进一步利用与基站连接的直接路径与基站进行通信，因此不需要进行RRC连接重建，能够有效避免RRC连接重建导致远端UE的中断和信令消耗。
图9示出了根据本公开实施例的一种无线资源控制RRC连接处理方法，该方法应用于第二终端设备，基于图6、图7、图8所示实施例，如图9所示，且可以包括以下步骤。
步骤801、向第一终端设备发送指示信息，指示信息用于指示是否释放与第二终端设备的侧行链路连接。
对于本公开实施例，基站可基于第一终端设备发送的第二终端设备的切换指示，和/或第二终端设备切换的目标小区，确定是否释放与第二终端设备的连接，并向第一终端设备发送用于指示是否释放与第二终端设备的侧行链路连接的指示信息。基站向第一终端设备发送指示信息的目的为：使第一终端设备能够响应于基站发送的指示信息，确定是否释放与第二终端设备的侧行链路连接。若基站发送的指示信息中指示释放与第二终端设备的侧行链路连接，第一终端设备则执行相应的释放过程；若基站发送的指示信息中指示保持与第二终端设备的侧行链路连接，第一终端设备则不执行相应的释放过程，保持与第二终端设备的侧行链路连接。
综上，根据本公开提供的一种无线资源控制RRC连接处理方法，基站可向第一终端设备发送用于指示是否释放与第二终端设备的侧行链路连接的指示信息，以便第一终端设备基于指示信息进行无线资源控制RRC连接的管理，在确定配置有多路径连接时，进一步利用与基站连接的直接路径与基站进行通信，因此不需要进行RRC连接重建，能够有效避免RRC连接重建导致远端UE的中断和信令消耗。
图10为根据本公开实施例的一种无线资源控制RRC连接处理方法的时序图。该方法应用于一种通信系统，该系统包括：第一终端设备、第二终端设备、基站。其中，第一终端设备可为不直接与基站连接而通过另外一个终端设备的中继实现与基站的通信的终端设备(User Equipment,UE)，即远端UE(remote UE)；第二终端设备为与第一终端设备进行侧行链路通信的中继终端设备，第二终端设备用于为第一终端设备提供中继功能，以实现第一终端设备与基站的通信。在具体的执行时，第二终端设备可向第一终端设备发送切换指示；第一终端设备响应于收到第二终端设备发送的切换指示，确定是否配置多路径连接；第一终端设备响应于确定配置有多路径连接，且确定多路径连接中的直接路径可用，确定不进行无线资源控制RRC连接重建，和/或，响应于确定配置有多路径连接，且确定多路径连接中的直接路径支持无线信令承载SRB传输，确定不进行无线资源控制RRC连接重建；第一终端设备通过直接路径向基站发送第二终端设备的切换指示；第一终端设备向基站发送第二终端设备切换的目标小区；第一终端设备释放与第二终端设备的侧行链路连接；基站向第一终端设备发送特定目标列表，特定目标列表中携带有特定目标小区的小区标识；第一终端设备确定第二终端设备切换的目标小区是否属于特定目标小区；响应于目标小区属于特定目标小区，保持与第二终端设备的侧行链路连接，响应于目标小区不属于特定目标小区，释放与第二终端设备的侧行链路连接；基站向第一终端设备发送指示信息，指示信息用于指示是否释放与第二终端设备的侧行链路连接；第一终端设备响应于基站发送的指示信息，确定是否释放与第二终端设备的侧行链路连接。
步骤1001、第二终端设备向第一终端设备发送切换指示。
其中，第二终端设备为与第一终端设备进行侧行链路通信的中继终端设备。
在具体的应用场景中，第一终端设备和第二终端设备之间可通过侧行链路单播通信。当第二终端设备发生无线链路失败，切换，小区重选等，造成无线资源控制(Radio Resource Control，RRC)连接失败时，可通过侧行链路向连接的第一终端设备发送通知消息(Notification Message Sidelink)，在该通知消息可中携带用于指示第二终端设备发生服务小区切换的切换指示。
步骤1002、第一终端设备响应于收到第二终端设备发送的切换指示，确定第一终端设备是否配置多路径连接。
其中，多路径连接包括第一终端设备与基站直接连接的直接路径和第一终端设备通过第二终端设备与基站连接的间接路径。直接路径为第一终端设备不经过第二终端设备，直接与基站建立通信连接的链路；间接路径为第一终端设备需要经过第二终端设备的中继，与基站建立通信连接的链路。
对于本公开实施例，第一终端设备可响应于接收到的切换指示，确定第二终端设备发生了服务小区 切换，此时第一终端设备可进一步确定是否配置有与基站的多路径连接，当配置有多路径连接时，即使间接路径中起到中继作用的第二终端设备发生了切换，第一终端设备还可以通过直接路径保持与基站的RRC连接，因此不需要进行RRC连接重建；反之，当未配置多路径连接时，即第一终端设备与基站之间只配置间接路径，此时需要进行RRC连接重建。
步骤1003、第一终端设备响应于确定配置有多路径连接，且确定多路径连接中的直接路径可用，不进行无线资源控制RRC连接重建，和/或，响应于确定配置有多路径连接，且确定多路径连接中的直接路径支持无线信令承载SRB传输，不进行无线资源控制RRC连接重建。
作为一种可能的实现方式，第一终端设备可响应于确定配置有多路径连接，且确定多路径连接中的直接路径可用，确定不进行无线资源控制RRC连接重建。其具体实现过程可参见实施例步骤302中的相关描述，在此不再赘述。
作为一种可能的实现方式，第一终端设备可响应于确定配置有多路径连接，且确定多路径连接中的直接路径支持无线信令承载SRB传输，确定不进行无线资源控制RRC连接重建。其具体实现过程可参见实施例步骤402中的相关描述，在此不再赘述。
作为一种可能的实现方式，第一终端设备可响应于确定配置有多路径连接，确定多路径连接中的直接路径可用以及确定多路径连接中的直接路径支持无线信令承载SRB传输，确定不进行无线资源控制RRC连接重建。其具体实现过程可参见实施例步骤502中的相关描述，在此不再赘述。
步骤1004、响应于确定配置有多路径连接，第一终端设备通过直接路径向基站发送第二终端设备的切换指示。
步骤1005、第一终端设备向基站发送第二终端设备切换的目标小区。
其中，目标小区可由第一终端设备基于第二终端设备的发现信号获取。在具体的应用场景中，第一终端设备和第二终端设备之间可以通过发现过程进行彼此的发现，在发现过程启动后，第一终端设备可以发送或者接收发现信号。发现信号中携带终端设备的服务小区标识，UE标识等信息。第一终端设备在接收到第二终端设备的切换指示，确定第二终端设备发生了服务小区的切换后，可通过发现过程接收第二终端设备的发现信号，根据发现信号中的服务小区标识确定第二终端设备切换后的服务小区，即目标小区。
多路径连接中的直接路径和间接路径的服务小区只能属于同一个基站。对于本公开实施例，在确定第一终端设备配置有多路径连接，且确定多路径连接中的直接路径可用时，第一终端设备可通过直接路径向基站发送第二终端设备的切换指示，以及包括第二终端设备切换的目标小区的切换信息，以便后续基站向第一终端设备发送候选小区列表，使第一终端设备能够根据候选小区列表验证目标小区与直接路径的服务小区是否属于相同的基站，并根据验证结果确定是否释放与第二终端设备的连接；或者基站还可基于第一终端设备发送的第二终端设备的切换指示，以及第二终端设备切换的目标小区，确定是否释放与第二终端设备的连接，并向第一终端设备发送用于指示是否释放与第二终端设备的侧行链路连接的指示信息。
需要说明的是，第一终端设备在向基站发送第二终端设备的切换指示以及切换信息时，作为一种可能的实现方式，第一终端设备可向基站分别发送第二终端设备的切换指示以及切换信息，针对切换指示以及切换信息的发送顺序在此不进行具体的限定；作为一种可能的实现方式，第一终端设备可向基站同时发送第二终端设备的切换指示以及切换信息，如可在切换指示中同时携带有切换信息等，对此不进行具体的限定。
步骤1006、第一终端设备释放与第二终端设备的侧行链路连接。
对于本公开实施例，作为一种可能的实现方式，响应于第一终端设备配置有多路径连接，第一终端设备在确定不进行无线资源控制RRC连接重建后，可直接释放与第二终端设备的侧行链路连接。
步骤1007、基站向第一终端设备发送特定目标列表，特定目标列表中携带有特定目标小区的小区标识。
其中，特定目标小区为与直接路径的服务小区属于相同基站的候选小区。
对于本公开实施例，基站通过向第一终端设备发送特定目标列表(即候选小区列表)，使第一终端设备能够根据候选小区列表验证目标小区与直接路径的服务小区是否属于相同的基站，并根据验证结果确定是否释放与第二终端设备的连接。
步骤1008、第一终端设备确定第二终端设备切换的目标小区是否属于特定目标小区，响应于目标小区属于特定目标小区，保持与第二终端设备的侧行链路连接，响应于目标小区不属于特定目标小区，释放与第二终端设备的侧行链路连接。
对于本公开实施例，作为一种可能的实现方式，第一终端设备接收到基站发送的特定目标列表(即候选小区列表)后，在确定第二终端设备切换的目标小区是否属于特定目标小区时，可将目标小区的小区标识与特定目标列表中的小区标识匹配，确定目标小区是否属于特定目标小区。其中，特定目标小区为与直接路径的服务小区属于相同基站的候选小区。
步骤1009、基站向第一终端设备发送指示信息，指示信息用于指示是否释放与第二终端设备的侧行链路连接。
对于本公开实施例，基站可基于第一终端设备发送的第二终端设备的切换指示，和/或第二终端设备切换的目标小区，确定是否释放与第二终端设备的连接，并向第一终端设备发送用于指示是否释放与第二终端设备的侧行链路连接的指示信息。
步骤1010、第一终端设备响应于基站发送的指示信息，确定是否释放与第二终端设备的侧行链路连接。
对于本公开实施例，作为一种可能的实现方式，第一终端设备接收基站发送的指示信息后，可进一步响应于指示信息，确定是否释放与第二终端设备的侧行链路连接。若基站发送的指示信息中指示释放与第二终端设备的侧行链路连接，第一终端设备则执行相应的释放过程；若基站发送的指示信息中指示保持与第二终端设备的侧行链路连接，第一终端设备则不执行相应的释放过程，保持与第二终端设备的侧行链路连接。
综上，根据本公开提供的一种无线资源控制RRC连接处理方法，第一终端设备可在收到第二终端设备发送的切换指示时，确定是否配置多路径连接，响应于确定配置有多路径连接，确定不进行无线资源控制RRC连接重建。通过本公开实施例，可基于是否有多径连接的确定结果，进行无线资源控制RRC连接的管理，在确定配置有多路径连接时，可进一步利用与基站连接的直接路径与基站进行通信，因此不需要进行RRC连接重建，能够有效避免RRC连接重建导致远端UE的中断和信令消耗。
上述本申请提供的实施例中，分别从第一终端设备、第二终端设备、基站的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，第一终端设备、第二终端设备、基站可以包括硬件结构、软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能可以以硬件结构、软件模块、或者硬件结构加软件模块的方式来执行。
与上述几种实施例提供的无线资源控制RRC连接处理方法相对应，本公开还提供一种无线资源控制RRC连接处理装置，由于本公开实施例提供的无线资源控制RRC连接处理装置与上述几种实施例提供的无线资源控制RRC连接处理方法相对应，因此无线资源控制RRC连接处理方法的实施方式也适用于本实施例提供的无线资源控制RRC连接处理装置，在本实施例中不再详细描述。
图11为根据本公开实施例提供的一种无线资源控制RRC连接处理装置1100的结构示意图，该无线资源控制RRC连接处理装置1100可应用于第一终端设备。
如图11所示，该装置1100可包括：
处理模块1110，可用于响应于接收到第二终端设备发送的切换指示，确定是否进行无线资源控制RRC连接重建，其中，第二终端设备为与第一终端设备进行侧行链路通信的中继终端设备。
在本公开的一些实施例中，处理模块1110，可用于基于第一终端设备是否配置有多路径连接，确定是否进行无线资源控制RRC连接重建，其中，多路径连接包括第一终端设备与基站直接连接的直接路径和第一终端设备通过第二终端设备与基站连接的间接路径；并且响应于确定第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建。
在本公开的一些实施例中，处理模块1110，可用于响应于确定第一终端设备未配置有多路径连接，进行无线资源控制RRC连接重建。
在本公开的一些实施例中，处理模块1110，在响应于确定第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建，包括以下至少一项：响应于确定第一终端设备配置有多路径连接，且确定多路径连接中的直接路径可用，不进行无线资源控制RRC连接重建；响应于确定第一终端设备配置有多路径连接，且确定多路径连接中的直接路径支持无线信令承载SRB传输，不进行无线资源控制RRC连接重建。
在本公开的一些实施例中，确定多路径连接中的直接路径可用，包括以下至少之一：确定多路径连接中的直接路径未发生失败；确定多路径连接中的直接路径的传输未被暂停。
在本公开的一些实施例中，确定多路径连接中的直接路径支持无线信令承载SRB传输，包括以下至少之一：SRB的无线链路层控制协议RLC位于多路径连接中的直接路径；SRB配置为split SRB或duplicated SRB。
在本公开的一些实施例中，如图11所示，该装置1100还包括：发送模块1120；
发送模块1120，可用于通过直接路径向基站发送第二终端设备的切换指示。
在本公开的一些实施例中，发送模块1120，可用于向基站发送第二终端设备的切换信息，切换信息中包括第二终端设备切换的目标小区。
在本公开的一些实施例中，处理模块1110，还可用于直接释放与第二终端设备的侧行链路连接。
在本公开的一些实施例中，处理模块1110，可用于确定第二终端设备切换的目标小区是否属于特定目标小区；响应于目标小区属于特定目标小区，保持与第二终端设备的侧行链路连接；响应于目标小区不属于特定目标小区，释放与第二终端设备的侧行链路连接。
在本公开的一些实施例中，处理模块1110，可用于将目标小区的小区标识与特定目标列表中的小区标识匹配，确定目标小区是否属于特定目标小区。
在本公开的一些实施例中，如图11所示，该装置1100还包括：接收模块1130；
接收模块1130，可用于接收基站发送的特定目标列表，特定目标列表中携带有特定目标小区的小区标识。
在本公开的一些实施例中，接收模块1130，可用于接收基站发送的指示信息，指示信息用于指示是否释放与第二终端设备的侧行链路连接；处理模块1110，可用于根据指示消息确定是否释放与第二终端设备的侧行链路连接。
图12为本公开实施例提供的一种无线资源控制RRC连接处理装置1200的结构示意图。该无线资源控制RRC连接处理装置1200可应用于第二终端设备。
如图12所示，该装置1200可包括：
接收模块1210，可用于接收第一终端设备通过直接路径发送的第二终端设备的切换指示。
在本公开的一些实施例中，接收模块1210，可用于接收第一终端设备发送的第二终端设备的切换信息，切换信息中包括第二终端设备切换的目标小区。
在本公开的一些实施例中，如图12所示，该装置1200还包括：发送模块1220；
发送模块1220，可用于向第一终端设备发送特定目标列表，特定目标列表中携带有特定目标小区的小区标识。
在本公开的一些实施例中，发送模块1220，可用于向第一终端设备发送指示信息，指示信息用于指示是否释放与第二终端设备的侧行链路连接。
请参见图13，图13是本申请实施例提供的一种通信装置1300的结构示意图。通信装置1300可以是网络设备，也可以是用户设备，也可以是支持网络设备实现上述方法的芯片、芯片系统、或处理器等，还可以是支持用户设备实现上述方法的芯片、芯片系统、或处理器等。该装置可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
通信装置1300可以包括一个或多个处理器1301。处理器1301可以是通用处理器或者专用处理器等。例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、基带芯片，终端设备、终端设备芯片，DU或CU等)进行控制，执行计算机程序，处理计算机程序的数据。
可选的，通信装置1300中还可以包括一个或多个存储器1302，其上可以存有计算机程序1304，处理器1301执行计算机程序1304，以使得通信装置1300执行上述方法实施例中描述的方法。可选的，存储器1302中还可以存储有数据。通信装置1300和存储器1302可以单独设置，也可以集成在一起。
可选的，通信装置1300还可以包括收发器1305、天线1306。收发器1305可以称为收发单元、收发机、或收发电路等，用于实现收发功能。收发器1305可以包括接收器和发送器，接收器可以称为接收机或接收电路等，用于实现接收功能；发送器可以称为发送机或发送电路等，用于实现发送功能。
可选的，通信装置1300中还可以包括一个或多个接口电路1307。接口电路1307用于接收代码指令并传输至处理器1301。处理器1301运行代码指令以使通信装置1300执行上述方法实施例中描述的方法。
在一种实现方式中，处理器1301中可以包括用于实现接收和发送功能的收发器。例如该收发器可 以是收发电路，或者是接口，或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的，也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在一种实现方式中，处理器1301可以存有计算机程序1303，计算机程序1303在处理器1301上运行，可使得通信装置1300执行上述方法实施例中描述的方法。计算机程序1303可能固化在处理器1301中，该种情况下，处理器1301可能由硬件实现。
在一种实现方式中，通信装置1300可以包括电路，该电路可以实现前述方法实施例中发送或接收或者通信的功能。本申请中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor，PMOS)、双极结型晶体管(bipolar junction transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的通信装置可以是网络设备或者用户设备，但本申请中描述的通信装置的范围并不限于此，而且通信装置的结构可以不受图13的限制。通信装置可以是独立的设备或者可以是较大设备的一部分。例如该通信装置可以是：
(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；
(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据，计算机程序的存储部件；
(3)ASIC，例如调制解调器(Modem)；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；
(6)其他等等。
对于通信装置可以是芯片或芯片系统的情况，可参见图14所示的芯片的结构示意图。图14所示的芯片包括处理器1401和接口1402。其中，处理器1401的数量可以是一个或多个，接口1402的数量可以是多个。
可选的，芯片还包括存储器1403，存储器1403用于存储必要的计算机程序和数据。
本领域技术人员还可以了解到本申请实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件，或两者的结合进行实现。这样的功能是通过硬件还是软件来实现取决于特定的应用和整个系统的设计要求。本领域技术人员可以对于每种特定的应用，可以使用各种方法实现的功能，但这种实现不应被理解为超出本申请实施例保护的范围。
本申请还提供一种可读存储介质，其上存储有指令，该指令被计算机执行时实现上述任一方法实施例的功能。
本申请还提供一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的 功能。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。计算机程序产品包括一个或多个计算机程序。在计算机上加载和执行计算机程序时，全部或部分地产生按照本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。计算机程序可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，计算机程序可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
本公开提出一种无线资源控制RRC连接处理方法，可在中继UE发生无线链路失败、切换、小区重选时，避免RRC连接重建导致远端UE的中断和信令消耗。
基于本公开，一种具体方案的示例如下：
1.当远端UE收到中继UE发送的切换指示时，如果远端UE配置了多路径连接，确定不进行RRC连接重建。否则，进行RRC连接重建。
作为实施例，切换指示可通过Notification Message Sidelink消息中指示。
2.基于1，进一步的，如果远端UE配置了多路径连接，并且直接路径可用时，确定不进行RRC连接重建。否则，进行RRC连接重建。
作为实施例，直接路径通过以下情况确定为可用：
i.直接路径未发生失败
ii.直接路径的传输未被暂停
3.基于1或2，进一步的，如果远端UE配置了多路径连接，并且SRB可以通过直接路径传输时，确定不进行RRC连接重建。
作为实施例，可通过以下情况确定SRB可以通过直接路径传输，
i.SRB的RLC位于直接路径
ii.SRB配置为split SRB或duplicated SRB
4.基于1，远端UE通过直接路径上报中继UE切换指示。
作为实施例，可以通过RRC消息上报中继UE切换指示。
5.基于4，远端UE还可以上报中继UE切换的目标小区。
6.基于1，远端UE释放与中继UE的sidelink连接。
7.基于1，远端UE确定中继UE的切换目标小区属于候选小区(即特定目标小区)，继续保持与中继UE的sidelink连接，否则，释放与中继UE的sidelink连接。
8.基于7，远端UE获取候选小区列表(即特定目标列表)，候选小区列表由基站提供。
作为实施例，候选项小区列表中携带小区标识，小区与直接路径的服务小区属于相同的基站。
9.基于4，接收基站发送的指示，确定是否释放与中继UE的连接。
综上，本公开具有以下有益技术效果：可基于是否有多径连接的确定结果，进行无线资源控制RRC连接的管理，在确定配置有多路径连接时，可进一步利用与基站连接的直接路径与基站进行通信，因此不需要进行RRC连接重建，能够有效避免RRC连接重建导致远端UE的中断和信令消耗。
本领域普通技术人员可以理解：本申请中涉及的第一、第二等各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围，也表示先后顺序。
本申请中的至少一个还可以描述为一个或多个，多个可以是两个、三个、四个或者更多个，本申请不做限制。在本申请实施例中，对于一种技术特征，通过“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”等区分该种技术特征中的技术特征，该“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”描述的技术特征间无先后顺序或者大小顺序。
如本文使用的，术语“机器可读介质”和“计算机可读介质”指的是用于将机器指令和/或数据提供给可编程处理器的任何计算机程序产品、设备、和/或装置(例如，磁盘、光盘、存储器、可编程逻辑装置(PLD))，包括，接收作为机器可读信号的机器指令的机器可读介质。术语“机器可读信号”指的是用于将机器指令和/或数据提供给可编程处理器的任何信号。
可以将此处描述的系统和技术实施在包括后台部件的计算系统(例如，作为数据服务器)、或者包括中间件部件的计算系统(例如，应用服务器)、或者包括前端部件的计算系统(例如，具有图形用户界面或者网络浏览器的用户计算机，用户可以通过该图形用户界面或者该网络浏览器来与此处描述的系统和技术的实施方式交互)、或者包括这种后台部件、中间件部件、或者前端部件的任何组合的计算系统中。可以通过任何形式或者介质的数字数据通信(例如，通信网络)来将系统的部件相互连接。通信网络的示例包括：局域网(LAN)、广域网(WAN)和互联网。
计算机系统可以包括客户端和服务器。客户端和服务器一般远离彼此并且通常通过通信网络进行交互。通过在相应的计算机上运行并且彼此具有客户端-服务器关系的计算机程序来产生客户端和服务器的关系。
应该理解，可以使用上面所示的各种形式的流程，重新排序、增加或删除步骤。例如，本公开中记载的各步骤可以并行地执行也可以顺序地执行也可以不同的次序执行，只要能够实现本公开公开的技术方案所期望的结果，本文在此不进行限制。
此外，应该理解，本申请的各种实施例可以单独实施，也可以在方案允许的情况下与其他实施例组合实施。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
以上，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (22)

  1. 一种无线资源控制RRC连接处理方法，应用于第一终端设备，其特征在于，所述方法包括：
    响应于接收到第二终端设备发送的切换指示，确定是否进行无线资源控制RRC连接重建，其中，所述第二终端设备为与所述第一终端设备进行侧行链路通信的中继终端设备。
  2. 根据权利要求1所述的方法，其中，所述确定是否进行无线资源控制RRC连接重建，包括：
    基于所述第一终端设备是否配置有多路径连接，确定是否进行无线资源控制RRC连接重建，其中，所述多路径连接包括第一终端设备与基站直接连接的直接路径和第一终端设备通过所述第二终端设备与基站连接的间接路径；并且
    响应于确定所述第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建。
  3. 根据权利要求2所述的方法，所述基于所述第一终端设备是否配置有多路径连接，确定是否进行无线资源控制RRC连接重建，还包括：响应于确定所述第一终端设备未配置有多路径连接，进行无线资源控制RRC连接重建。
  4. 根据权利要求2所述的方法，其特征在于，所述响应于确定所述第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建，包括以下至少一项：
    响应于确定所述第一终端设备配置有多路径连接，且确定所述多路径连接中的直接路径可用，不进行无线资源控制RRC连接重建；
    响应于确定所述第一终端设备配置有多路径连接，且确定所述多路径连接中的直接路径支持无线信令承载SRB传输，不进行无线资源控制RRC连接重建。
  5. 根据权利要求4所述的方法，其特征在于，所述确定所述多路径连接中的直接路径可用，包括以下至少之一：
    确定所述多路径连接中的直接路径未发生失败；
    确定所述多路径连接中的直接路径的传输未被暂停。
  6. 根据权利要求4所述的方法，其特征在于，所述确定所述多路径连接中的直接路径支持无线信令承载SRB传输，包括以下至少之一：
    SRB的无线链路层控制协议RLC位于所述多路径连接中的直接路径；
    SRB配置为split SRB或duplicated SRB。
  7. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    通过所述直接路径向所述基站发送所述切换指示。
  8. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    向所述基站发送所述第二终端设备的切换信息，所述切换信息中包括所述第二终端设备切换的目标小区。
  9. 根据权利要求2所述的方法，其特征在于，在所述响应于确定所述第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建之后，所述方法还包括：
    直接释放与所述第二终端设备的侧行链路连接。
  10. 根据权利要求2所述的方法，其特征在于，在所述响应于确定所述第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建之后，所述方法还包括：
    确定所述第二终端设备切换的目标小区是否属于特定目标小区；
    响应于所述目标小区属于特定目标小区，保持与所述第二终端设备的侧行链路连接；
    响应于所述目标小区不属于特定目标小区，释放与所述第二终端设备的侧行链路连接。
  11. 根据权利要求10所述的方法，其特征在于，所述确定所述第二终端设备切换的目标小区是否属于特定目标小区，包括：
    将所述目标小区的小区标识与特定目标列表中的小区标识匹配，确定所述目标小区是否属于特定目标小区。
  12. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    接收所述基站发送的所述特定目标列表，所述特定目标列表中携带有所述特定目标小区的小区标识。
  13. 根据权利要求2所述的方法，其特征在于，在所述响应于确定所述第一终端设备配置有多路径连接，不进行无线资源控制RRC连接重建之后，所述方法还包括：
    接收基站发送的指示信息，所述指示信息用于指示是否释放与所述第二终端设备的侧行链路连接；
    根据所述指示消息确定是否释放与所述第二终端设备的侧行链路连接。
  14. 一种无线资源控制RRC连接处理方法，应用于基站，其特征在于，所述方法包括：
    接收第一终端设备通过直接路径发送的第二终端设备的切换指示。
  15. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    接收所述第一终端设备发送的所述第二终端设备的切换信息，所述切换信息中包括所述第二终端设备切换的目标小区。
  16. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    向所述第一终端设备发送特定目标列表，所述特定目标列表中携带有特定目标小区的小区标识。
  17. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    向所述第一终端设备发送指示信息，所述指示信息用于指示是否释放与所述第二终端设备的侧行链路连接。
  18. 一种无线资源控制RRC连接处理装置，应用于第一终端设备，其特征在于，所述装置包括：
    处理模块，用于响应于接收到第二终端设备发送的切换指示，确定是否进行无线资源控制RRC连接重建，其中，所述第二终端设备为与所述第一终端设备进行侧行链路通信的中继终端设备。
  19. 一种无线资源控制RRC连接处理装置，其特征在于，所述装置应用于基站，所述装置包括：
    接收模块，用于接收第一终端设备通过直接路径发送的第二终端设备的切换指示。
  20. 一种通信设备，其中，包括：收发器；存储器；处理器，分别与所述收发器及所述存储器连接， 配置为通过执行所述存储器上的计算机可执行指令，控制所述收发器的无线信号收发，并能够实现权利要求1-17中任一项所述的方法。
  21. 一种计算机存储介质，其中，所述计算机存储介质存储有计算机可执行指令；所述计算机可执行指令被处理器执行后，能够实现权利要求1-17中任一项所述的方法。
  22. 一种通信系统，包括第一终端设备、第二终端设备、基站，其特征在于：
    所述第一终端设备被配置为执行如权利要求1-13中任一项所述的方法；
    所述基站被配置为执行如权利要求14-17中任一项所述的方法。
PCT/CN2023/072169 2023-01-13 2023-01-13 无线资源控制rrc连接处理方法及装置 Ceased WO2024148614A1 (zh)

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