Communication method, network device and terminal device

Abstract

The present disclosure discloses a communication method, an apparatus, a network device, a terminal device, and a storage medium related to the communication technology field. The method includes: an MN transmitting an RRC reconfiguration message to a terminal device, the RRC reconfiguration message including at least one or at least one set of secondary node SN count values ​​configured for each candidate PSCell and / or each candidate SCG; at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs. The present disclosure determines a new key according to the SN count values ​​and uses the new key to improve communication security between the terminal device and a supplemental node. At the same time, since multiple SN count values ​​are configured in the RRC reconfiguration message, signaling overhead for subsequent SN count value updates can be reduced.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This disclosure is based on and claims priority from a Chinese patent application bearing application number 202310114046.5 and filed on February 6, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present disclosure relates to the field of communications technology, and in particular to a communication method, an apparatus, a network device, a terminal device, and a storage medium. [Background technology]

[0003] In the New Radio (NR) Dual Connectivity (NR-DC, NR-NR Dual Connectivity) scenario, especially for Frequency Range 2 (FR2), a selective cell group activation technology direction is proposed to reduce cell change delay and signaling load. The purpose is to enable continuous cell group activation or change without requiring Radio Resource Control (RRC) reconfiguration or restart conditional primary secondary cell change (CPC) or conditional primary secondary cell addition (CPA) processes for the user equipment (UE). Here, the cell group includes at least a secondary cell group (SCG).

[0004] In the traditional dual connection scenario, the UE and the secondary node (SN) share the same SN key.

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[0005] To solve the problems in the related art, embodiments of the present disclosure provide a communication method, an apparatus, a network device, a terminal device, and a storage medium. [Means for solving the problem]

[0006] In a first aspect according to an embodiment of the present disclosure, there is provided a communication method applied to an MN, the method comprising: sending an RRC reconfiguration message to the terminal device, the RRC reconfiguration message comprising: At least one or at least one set of secondary node SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

[0007] In the above aspect, the number or cumulative number of SN count values ​​configured for each candidate PSCell and / or each candidate SCG is used to indicate the maximum permitted number of times to return to or access the same candidate PSCell and / or the same candidate SCG.

[0008] In the above aspect, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs is used to indicate the maximum allowed number of times selective PSCell and / or SCG activation is performed.

[0009] In the above aspect, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs is used to indicate the maximum allowed number of times selective PSCell and / or SCG activation is performed.

[0010] In the above embodiment, the at least one or at least one set of SN count values ​​comprise: at least one SN count value; a range of SN count values ​​and one or more increments; One SN count value, one variation range and one or more increments; and indicated by at least one of an SN count value and one or more increments; Here, the increment is the amount of increase in the SN count value.

[0011] In the above aspect, the plurality of increments is using different increments when the terminal device returns to or accesses the same candidate PSCell and / or the same candidate SCG in subsequent or two consecutive attempts; Using different increments when the terminal device performs selective PSCell and / or SCG activation in the next or two consecutive attempts; using different increments when the terminal device accesses the candidate PSCell and / or SCG in subsequent or two consecutive attempts; and / or the terminal equipment uses different increments the next time it returns to or accesses the same SN on subsequent or two consecutive attempts.

[0012] In the above aspect, the RRC reconfiguration message further includes first information, and the first information is Whether the SN count value is recyclable or reusable; The validity period of the SN count value, and It is used to indicate at least one of the valid times of the SN count value.

[0013] In the above aspect, one piece of first information corresponds to one SN count value, or One first information corresponds to an SN count value of one candidate PSCell and / or one candidate SCG, or One first information corresponds to the SN count values ​​of all candidate PSCells and / or SCGs, or One piece of first information corresponds to the SN count value of one SN.

[0014] In the above aspect, when the first information indicates that the SN count value can be cyclically used or reused, the SN count value that is uniquely set for one candidate PSCell and / or one candidate SCG is used to indicate that the terminal device will use the same SN count value when returning to or accessing the same candidate PSCell and / or the same candidate SCG from the next time onwards or in each attempt.

[0015] In the above aspect, when the first information indicates that the SN count value can be cyclically used or reused, the SN count value that is uniquely set for all candidate PSCells and / or SCGs of one SN is used to indicate that the terminal equipment should use the same SN count value when returning to or accessing the same SN from the next time onwards or on each attempt.

[0016] In the above aspect, when the first information indicates that the SN count value is cyclically usable or reusable, the SN count value that is uniquely set for all candidate PSCells and / or all candidate SCGs is: The terminal device uses the same SN count value when performing selective PSCell and / or SCG activation in the next or each subsequent attempt; and the terminal device uses the same SN count value when accessing the candidate PSCell and / or SCG from the next time onwards or on every attempt.

[0017] In the above aspect, different SN count values ​​of one candidate PSCell and / or one candidate SCG are used to instruct the terminal device to use different SN count values ​​when returning to or accessing the same candidate PSCell and / or the same candidate SCG from the next time onwards or every time or in two consecutive attempts.

[0018] In the above aspect, different SN count values ​​of all candidate PSCells and / or all candidate SCGs of one SN are used to instruct the terminal device to use different SN count values ​​when returning to or accessing the same SN from the next time onwards or every time or in two consecutive attempts.

[0019] In the above-mentioned aspect, the different SN count values ​​of all candidate PSCells and / or all candidate SCGs are This is used to instruct at least one of the following: that the terminal device uses a different SN count value when performing selective PSCell and / or SCG activation from the next time onwards or every time or two consecutive attempts; and that the terminal device uses a different SN count value when accessing a candidate PSCell and / or candidate SCG from the next time onwards or every time or two consecutive attempts.

[0020] In the above aspect, when one candidate PSCell and / or one candidate SCG has only one SN count value, or one SN has only one SN count value, or all candidate PSCells and / or all candidate SCGs have only one SN count value, the method may: The method further includes instructing the terminal device of an updated SN count value if the SN count value expires or if the terminal device fails to access the SN using the SN count value.

[0021] In the above aspect, the method comprises: Further included is storing the SN count value being used and automatically updating the SN count value.

[0022] In a second aspect of the present disclosure, there is further provided a communication method executed by a terminal device, the method including: receiving an RRC reconfiguration message sent from the MN; The RRC reconfiguration message includes at least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

[0023] In the above aspect, the number or cumulative number of SN count values ​​configured for each candidate PSCell and / or each candidate SCG is used to indicate the maximum permitted number of times to return to or access the same candidate PSCell and / or the same candidate SCG.

[0024] In the above aspect, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN is used to indicate the maximum allowed number of times to return to or access the same SN.

[0025] In the above aspect, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs is used to indicate the maximum allowed number of times selective PSCell and / or SCG activation is performed.

[0026] In the above embodiment, the at least one or at least one set of SN count values ​​comprise: at least one SN count value; a range of SN count values ​​and one or more increments; Indicated by at least one of the following: an SN count value, a variation range and one or more increments; and an SN count value and one or more increments; Here, the increment is the amount of increase in the SN count value.

[0027] In the above aspect, the plurality of increments are: This is used to instruct at least one of the following: to use different increments when the terminal device returns to or accesses the same candidate PSCell or the same candidate SCG in the next or subsequent two attempts; to use different increments when the terminal device continuously performs selective SCG activation in the next or subsequent two attempts; to use different increments when the terminal device accesses a candidate PSCell or a candidate SCG in the next or subsequent two attempts; and to use different increments when the terminal device returns to or accesses the same SN in the next or subsequent two attempts.

[0028] In the above aspect, if no SN count value is available, the method further comprises: Not returning, accessing, or evaluating the candidate PSCell and / or candidate SCG corresponding to the SN count value; not returning, accessing, or evaluating the SN corresponding to the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or all candidate SCGs of the SN corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or the corresponding candidate SCG; Deleting the configuration of all candidate PSCells and / or all candidate SCGs of the corresponding SN; Not returning to, accessing, or evaluating all candidate PSCells and / or all candidate SCGs; Deleting the configuration of all candidate PSCells and / or all candidate SCGs; and terminating the execution process of selective PSCell and / or SCG activation.

[0029] In the above aspect, the RRC reconfiguration message further includes first information, and the first information is Whether the SN count value is recyclable or reusable; The validity period of the SN count value, and It is used to indicate at least one of the valid times of the SN count value.

[0030] In the above aspect, one piece of first information corresponds to one SN count value, or One piece of first information corresponds to the SN count value of one candidate PSCell and / or one candidate SCG, or one piece of first information corresponds to the SN count value of all candidate PSCells and / or all candidate SCGs, or one piece of first information corresponds to the SN count value of one SN.

[0031] In the above aspect, the method comprises: The method further includes determining an SN count value to be used when performing at least one of accessing or returning the same SN, accessing or returning the same candidate PSCell and / or the same candidate SCG, accessing the candidate PSCell and / or candidate SCG, and selective PSCell and / or SCG activation.

[0032] In the above aspect, the method further comprises: The method includes at least one of: if one candidate PSCell and / or one candidate SCG has only one SN count value and the first information indicates that the SN count value is cyclically usable or reusable, using the same SN count value each time when returning to or accessing the same candidate PSCell or the same candidate SCG; if all candidate PSCells and / or SCGs of one SN have only one SN count value and the first information indicates that the SN count value is cyclically usable or reusable, using the same SN count value each time when returning to or accessing the same SN; if all candidate PSCells and / or SCGs have only one SN count value and the first information indicates that the SN count value is cyclically usable or reusable, using the same SN count value each time when performing selective PSCell or SCG activation or using the same SN count value each time when accessing the candidate PSCell or candidate SCG.

[0033] In the above aspect, the method comprises: The method further includes at least one of: if one candidate PSCell and / or one candidate SCG has a different SN count value, sequentially using different SN count values ​​when returning to or accessing the same candidate PSCell or the same candidate SCG from the next time onwards or in each or two consecutive attempts; if all candidate PSCells and / or SCGs have different SN count values, sequentially using different SN count values ​​when performing selective PSCell or SCG activation from the next time onwards or in each or two consecutive attempts, or sequentially using different SN count values ​​when accessing a candidate PSCell or SCG from the next time onwards or in each or two consecutive attempts; if one SN has a different SN count value, sequentially using different SN count values ​​when returning to or accessing the same SN from the next time onwards or in each or two consecutive attempts.

[0034] In the above aspect, when the effective time and / or effective number of times of the SN count value indicated by the first information is exceeded, the method further comprises: Deleting the SN count value or not using the SN count value; Not returning, accessing, or evaluating the candidate PSCell and / or candidate SCG corresponding to the SN count value; not returning, accessing, or evaluating the SN corresponding to the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or all candidate SCGs of the SN corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or the corresponding candidate SCG; Deleting the configuration of all candidate PSCells and / or all candidate SCGs of the corresponding SN; Not returning to, accessing, or evaluating all candidate PSCells and / or all candidate SCGs; Deleting the configuration of all candidate PSCells and / or all candidate SCGs; and terminating the execution process of selective PSCell and / or SCG activation.

[0035] In the above aspect, if one candidate PSCell and / or one candidate SCG has only one SN count value, or one SN has only one SN count value, or all candidate PSCells and / or all candidate SCGs have only one SN count value, the method may further include: receiving an updated SN Count value indicated by the MN when the SN Count value expires or when the terminal equipment fails to access the SN using the SN Count value.

[0036] In the above aspect, the method comprises: the first SN count value has expired; and a failure to access the first SN using the first SN count value; and the first SN denies access, accessing the first SN using the second SN count value; The first SN count value and the second SN count value are both SN count values ​​configured for the first SN in the RRC reconfiguration message.

[0037] In the above aspect, the method comprises: Further included is storing the SN count value being used and automatically updating the SN count value.

[0038] In a third aspect according to the embodiments of the present disclosure, there is further provided a communication device, the device comprising: a first transmitting unit configured to transmit an RRC reconfiguration message to a terminal device; The RRC reconfiguration message: At least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

[0039] In a fourth aspect according to the embodiments of the present disclosure, there is further provided a communication device, the device comprising: a first receiving unit configured to receive an RRC reconfiguration message sent from the MN; The RRC reconfiguration message: At least one or at least one set of SN count values ​​configured for each candidate PSCell and / or all candidate SCGs; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

[0040] In a fifth aspect of the embodiment of the present disclosure, there is further provided a network device including a first processor and a first communication interface; the first communication interface is configured to send an RRC reconfiguration message to a terminal device; The RRC reconfiguration message: At least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

[0041] In a sixth aspect of the embodiment of the present disclosure, a terminal device is further provided, the terminal device including a second processor and a second communication interface; the second communication interface is configured to receive an RRC reconfiguration message sent from a MN; The RRC reconfiguration message: At least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

[0042] In a seventh aspect of the present disclosure, there is further provided a network device including a first processor and a first memory for storing a computer program executable by the first processor; The first processor, when executing the computer program, performs the steps of any of the above MN-side methods.

[0043] In an eighth aspect of the embodiment of the present disclosure, there is further provided a terminal device including a second processor and a second memory for storing a computer program executable by the second processor; The second processor executes the steps of any of the above terminal device-side methods when executing the computer program.

[0044] In a ninth aspect of an embodiment of the present disclosure, a storage medium is further provided on which a computer program is stored, and when the computer program is executed by a processor, the steps of any of the methods on the MN side are realized, or the steps of any of the methods on the terminal device side are realized. [Effects of the Invention]

[0045] According to the communication method, device, network device, terminal device, and storage medium disclosed herein, an MN transmits an RRC reconfiguration message to a terminal device, and the terminal device receives the RRC reconfiguration message transmitted from the MN, the RRC reconfiguration message including at least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG, at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN, and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs. By using the above technical means, the MN can configure appropriate SN count values ​​for the candidate PSCells and / or candidate SCGs via the RRC reconfiguration message, so that under an NR-DC scenario, the terminal device determines an SN count value to be used for performing selective cell group activation from the configured SN count values, and then performs a new cell group activation based on the obtained SN count value.

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[0046] [Figure 1] 1 is a schematic flow diagram of a communication method according to an embodiment of the present disclosure. [Figure 2] 1 is a schematic flow diagram of a communication method according to an embodiment of the present disclosure. [Figure 3] 1 is a schematic diagram illustrating the configuration of a communication device according to an embodiment of the present disclosure. [Figure 4] 1 is a schematic diagram illustrating the configuration of a communication device according to an embodiment of the present disclosure. [Figure 5] FIG. 1 is a structural schematic diagram of a network device according to an embodiment of the present disclosure. [Figure 6] FIG. 2 is a structural schematic diagram of a terminal device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0047] In NR-DC scenarios, particularly for FR2, to enable successive cell group activation or modification without requiring the UE to perform RRC reconfiguration or restart CPC / CPA, the network pre-configures the UE with multiple candidate PSCell / SCG configurations and associated execution conditions via an RRC reconfiguration message. The UE evaluates the execution conditions and selects an appropriate PSCell / SCG. After the UE selects one PSCell / SCG, it saves the previous configuration and continues to evaluate the execution conditions to select the next appropriate PSCell / SCG, without releasing the stored configuration as in conventional CPA / CPC. In standard discussions, this process is referred to as selective cell group activation or modification, or successive cell group activation or modification, or selective PSCell activation or modification, or selective SCG activation or modification, or successive CPC / CPA, or successive PSCell or SCG activation or modification. During this process, it is not desirable for the network to perform RRC reconfiguration on the UE.

[0048] In the conventional dual connection scenario, MN is the SN key

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[0049] Here, when one radio bearer (RB) is added to the same SN each time, the MN

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[0050] In a selective cell group activation scenario, RRC reconfiguration is not desired throughout the process, so the UE can only obtain the SN counter from the first RRC reconfiguration message. For example, in the case of a UE moving in a mall or within a limited range, there is a possibility that the UE may access a previously accessed PSCell or SCG, and if the UE is allowed to return to the previously accessed PSCell or SCG, the UE can only obtain the SN counter from the first RRC reconfiguration message.

[0051] If only one SN counter is configured in the initial RRC reconfiguration message, this SN counter can be used for one selective cell group activation, and when the UE returns to or accesses the same PSCell or SCG in subsequent attempts, the original SN counter may be out of date. For example, the RB ID size is limited, so the SN counter may change. In this case, if the UE reuses the original SN counter, the UE will be able to use the latest

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[0052] To overcome the above problem, the present disclosure proposes a solution, in which an MN transmits an RRC reconfiguration message to a terminal device (UE), and the terminal device receives the RRC reconfiguration message transmitted from the MN, the RRC reconfiguration message including at least one of: at least one or one set of SN count values ​​configured for each candidate PSCell and / or SCG; at least one or one set of SN count values ​​configured for all candidate PSCells and / or SCGs for each SN; and at least one or one set of SN count values ​​configured for all candidate PSCells and / or SCGs. In this way, the MN can configure appropriate SN count values ​​for the candidate PSCells and / or SCGs via the RRC reconfiguration message, so that under an NR-DC scenario, the terminal device determines an SN count value to be used for performing selective cell group activation from the configured SN count values, and then performs a new cell group activation based on the obtained SN count value.

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[0053] The present disclosure will now be described in more detail with reference to the drawings and examples.

[0054] An embodiment of the present disclosure provides a communication method performed by a master node MN under dual connectivity (e.g., a master node under an NR-DC scenario). The master node is also called an anchor point and includes a base station and / or network equipment. As shown in FIG. 1 , the method includes the following step 101:

[0055] In step 101, an RRC reconfiguration message is sent to the terminal device.

[0056] The RRC reconfiguration message: At least one or a set of SN count values ​​configured for each candidate PSCell and / or SCG; At least one or one set of SN count values ​​configured for all candidate PSCells and / or SCGs for each SN; and at least one or a set of SN count values ​​configured for all candidate PSCells and / or SCGs.

[0057] Here, the MN can configure an SN count value for each candidate PSCell and / or SCG. The SN count values ​​configured for different candidate PSCells and / or SCGs may be partially or entirely the same, or completely different. The MN can configure an SN count value for all candidate PSCells and / or SCGs for each SN. The SN count values ​​configured for candidate PSCells and / or SCGs for different SNs may be partially or entirely the same, or completely different, in which case the configured SN count value is shared by all candidate PSCells and / or SCGs for a certain SN. The MN can further configure an SN count value for all candidate PSCells and / or SCGs, in which case the configured SN count value is shared by all candidate PSCells and / or SCGs.

[0058] Each candidate PSCell and / or SCG refers to each candidate PSCell and / or each candidate SCG. All candidate PSCells and / or SCGs refers to all candidate PSCells and / or all candidate SCGs. At least one or one set of SN count values ​​refers to at least one SN count value or at least one set of SN count values. At least one set of SN count values ​​includes at least one SN count value. An SN count value is also called an SN counter or an SN counter value.

[0059] It should be noted that if the RRC reconfiguration message includes at least two SN count values, these SN count values ​​are different from each other.

[0060] In one embodiment, the RRC reconfiguration message further includes first information, Whether the SN count value is recyclable or reusable; The validity period of the SN count value, and It is used to indicate at least one of the valid times of the SN count value.

[0061] Here, reuse can be understood as repeated use. If the SN count value can be recycled or reused, the SN count value can be saved.

[0062] The validity time of the SN count value may be an absolute time, such as 10:00, which is used to indicate that the SN count value is valid before the absolute time is reached.

[0063] The valid time of an SN count value may be a time range, such as 9:00 to 9:30, or a combination of an absolute time, such as 9:00+30 minutes, and a time period, which is used to indicate the valid time range.

[0064] In practical application, the MN can convey the first information through at least one bit. The MN can further configure the first information with different granularity. Based on this, in one embodiment, one piece of first information corresponds to one SN count value, or one piece of first information corresponds to the SN count value of one candidate PSCell and / or SCG, or one piece of first information corresponds to the SN count values ​​of all candidate PSCells and / or SCGs, or one piece of first information corresponds to the SN count value of one SN.

[0065] Here, the MN can configure the first information using the SN count value as granularity, or can configure the first information using the candidate PSCell and / or SCG as granularity, or can configure the first information using the SN as granularity.

[0066] When the MN configures the first information with the SN count value as the granularity, one piece of first information corresponds to one SN count value. In this case, the number of pieces of first information is the same as the number of configured SN count values. The validity period and / or validity count of the SN count values ​​indicated by different pieces of first information may be the same or different.

[0067] When the MN configures the first information with the granularity of a candidate PSCell and / or SCG, one piece of first information corresponds to all SN count values ​​of one candidate PSCell and / or one candidate SCG. In this case, all SN count values ​​of the same candidate PSCell and / or the same candidate SCG commonly correspond to one piece of first information. The number of pieces of first information is the same as the number of candidate PSCells and / or candidate SCGs.

[0068] If one first information corresponds to all SN count values ​​of all candidate PSCells and / or SCGs, it indicates that the MN only needs to configure one first information, and all SN count values ​​of all candidate PSCells and / or SCGs commonly correspond to one first information.

[0069] When the MN configures the first information with SN as the granularity, one piece of first information corresponds to all SN count values ​​of one SN. In this case, all SN count values ​​of all candidate PSCells and / or SCGs of the same SN commonly correspond to one piece of first information. The number of pieces of first information is the same as the number of SNs.

[0070] The MN may explicitly or implicitly indicate the maximum number of times a UE is allowed to return to or access the same candidate PSCell and / or the same candidate SCG. Accordingly, in one embodiment, the number or cumulative number of SN count values ​​configured for each candidate PSCell and / or SCG is used to indicate the maximum number of times a UE is allowed to return to or access the same candidate PSCell and / or the same candidate SCG.

[0071] Here, if the protocol specifies the maximum number of times to return to or access the same candidate PSCell and / or the same candidate SCG, the MN can explicitly indicate the maximum number of times to return to or access the same candidate PSCell and / or the same candidate SCG by configuring a (preliminary) corresponding number of SN count values ​​for each candidate PSCell and / or SCG, or an SN count value that is less than the maximum number specified in the protocol. For example, if the maximum number of times to return to the same candidate PSCell is three, the MN configures four SN count values ​​for the candidate PSCell in the RRC reconfiguration message. Adding one to the maximum number of times to return to the candidate PSCell equals the maximum number of times to access the candidate PSCell.

[0072] If the protocol does not specify the maximum number of times to return to or access the same candidate PSCell and / or the same candidate SCG, the MN can implicitly indicate the maximum number of times to return to or access the same candidate PSCell and / or the same candidate SCG via the number or cumulative number of SN count values ​​configured for each candidate PSCell and / or candidate SCG.

[0073] For example, the number of SN count values ​​configured for candidate PSCell 1 / SCG 1 is 4, which is used to indicate that the maximum number of times allowed to return to PSCell 1 is 3, or the maximum number of times allowed to access PSCell 1 / SCG 1 is 4.

[0074] Here, the cumulative number of SN count values ​​configured for each candidate PSCell and / or SCG is used to implicitly indicate the maximum permitted number of times to return to or access the same candidate PSCell and / or the same candidate SCG. The cumulative number of SN count values ​​may be determined according to the number of configured SN count values ​​and the number of times each SN count value can be reused or the valid number of times. For example, if two SN count values ​​are configured for candidate PSCell 1 / SCG 1, and each SN count value can be reused twice, the cumulative number of SN count values ​​for candidate PSCell 1 / SCG 1 is 4, which is used to indicate that the maximum permitted number of times to access candidate PSCell 1 / SCG 1 is 4 or that the maximum permitted number of times to return to PSCell 1 / SCG 1 is 3. For example, if two SN count values ​​are configured for candidate PSCell 1 / SCG 1, with valid times of 1 and 2 respectively, the cumulative number of SN count values ​​for candidate PSCell 1 / SCG 1 is 3, which is used to indicate that the maximum permitted number of times to access candidate PSCell 1 / SCG 1 is 3, or the maximum permitted number of times to return to PSCell 1 / SCG 1 is 2.

[0075] The MN may explicitly or implicitly indicate the maximum number of times a UE is allowed to return to or access the same SN. Accordingly, in one embodiment, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or SCGs for each SN is used to indicate the maximum number of times a UE is allowed to return to or access the same SN.

[0076] Here, if the protocol specifies a maximum number of times to return or access the same SN, the MN can explicitly indicate the maximum number of times to return or access the same SN by configuring a corresponding number of SN count values ​​for each SN or an SN count value less than the maximum number.

[0077] If the protocol does not specify the maximum number of times to return or access the same SN, the MN can implicitly indicate the maximum number of times it is allowed to return or access the same SN via the number or cumulative number of SN count values ​​configured for each SN.

[0078] Here, the number of SN count values ​​configured for all candidate PSCells and / or SCGs for each SN is used to explicitly or implicitly indicate the maximum number of times allowed to return to or access the same SN. The cumulative number of SN count values ​​configured for all candidate PSCells and / or SCGs for each SN is used to implicitly indicate the maximum number of times allowed to return to or access the same SN.

[0079] The MN may explicitly or implicitly indicate the maximum number of times the UE is allowed to perform selective PSCell and / or SCG activation. Accordingly, in one embodiment, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or SCGs is used to indicate the maximum number of times selective PSCell and / or SCG activation is allowed to be performed.

[0080] Here, if the protocol specifies the maximum number of times selective PSCell and / or SCG activation is performed, the MN can explicitly indicate the maximum permitted number of times selective PSCell and / or SCG activation is performed for all candidate PSCells and / or SCGs by configuring a corresponding number of SN count values ​​or an SN count value less than the maximum number specified in the protocol.If the protocol does not specify the maximum number of times selective PSCell and / or SCG activation is performed, the MN can implicitly indicate the maximum permitted number of times selective PSCell and / or SCG activation is performed via the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or SCGs.

[0081] Here, the number of SN count values ​​configured for all candidate PSCells and / or SCGs is used to explicitly or implicitly indicate the maximum permitted number of times selective PSCell and / or SCG activation is performed, and the cumulative number of SN count values ​​configured for all candidate PSCells and / or SCGs is used to implicitly indicate the maximum permitted number of times selective PSCell and / or SCG activation is performed.

[0082] The MN may directly configure a specific SN count value or may configure a range of SN count values. Based on this, in one embodiment, the configured at least one or a set of SN count values ​​are: at least one SN count value; a range of SN count values ​​and one or more increments (delta values); One SN count value, one variation range and one or more increments; and indicated by at least one of an SN count value and one or more increments; Here, the increment is the amount of increase in the SN count value.

[0083] Here, the MN may directly configure a specific SN count value, for example, configure at least one SN count value. For example, the list of SN count values ​​configured in the RRC reconfiguration message is {1, 2, 3, 5}, which represents that the available SN count values ​​are 1, 2, 3, and 5, respectively. The SN count values ​​are integers. In this case, the MN configures four SN count values.

[0084] The MN can configure a range of SN count values ​​and one or more increments to indicate multiple SN count values. An increment can be understood as the difference between every two adjacent SN count values, and the increment is an integer used to calculate the SN count value. Multiple increments can be understood as two or more increments. For example, the MN can directly configure a range of SN count values ​​from 1 to 10 (including the boundary value) and one increment. In this case, if the SN count value range configured by the MN is 1 to 10 and the increment is 1, the MN configures 10 SN count values, and if the increment is 2, the MN configures 5 SN count values. Also, for example, if the SN count value range configured by the MN is 1 to 10 (including the boundary value) and the increments are 1 and 2, the terminal device can calculate the SN count value using different increments sequentially. The available SN count values ​​are 1, 2, 4, 5, 7, 8, and 10, and the MN actually configures 7 SN count values.

[0085] The MN can further configure one SN count value, one variation range, and one or more increments to indicate multiple SN count values. For example, the MN configures one SN count value of 1, one variation range of 9, and one increment of 1. In this case, the SN count value configured by the MN ranges from 1 to 10, and the increment is 1, so the MN configures 10 SN count values, and the difference between the maximum and minimum SN count values ​​is 9. Also, for example, if the MN configures one SN count value of 1, one variation range of 9, and two increments of 1 and 2, respectively, the terminal device can calculate the SN count value using different increments sequentially, and the available SN count values ​​are 1, 2, 4, 5, 7, 8, and 10.

[0086] The MN can further configure one SN count value and one or more increments to indicate multiple SN count values. For example, if the MN configures one SN count value of 1 and one increment of 1, the UE will use 1 as the SN count value the first time and 2 as the SN count value the second time, sequentially incrementing by 1. For example, if the MN configures one SN count value of 1 and two increments of 1 and 2, respectively, the terminal equipment can calculate the SN count value using different increments sequentially, so that the SN count value calculated the first time is 1, the SN count value calculated the second time is 2, the SN count value calculated the third time is 4, and the SN count value calculated the fourth time is 5. That is, each time the SN count value is calculated, 1 or 2 is sequentially added based on the SN count value calculated most recently.

[0087] In one embodiment, the plurality of increments is: using different increments when the terminal device returns to or accesses the same candidate PSCell and / or the same candidate SCG in subsequent or two consecutive attempts; Using different increments when the terminal device performs selective PSCell and / or SCG activation in the next or two consecutive attempts; using different increments when the terminal device accesses the candidate PSCell and / or SCG in subsequent or two consecutive attempts; and / or the terminal equipment uses different increments the next time it returns to or accesses the same SN on subsequent or two consecutive attempts.

[0088] Here, each of the different increments is used to calculate an SN count value.

[0089] When the MN configures multiple increments for one candidate PSCell and / or one candidate SCG, the multiple increments are used to instruct the terminal device to use different increments when returning to or accessing the same candidate PSCell and / or the same candidate SCG in subsequent attempts or in two consecutive attempts.

[0090] When the MN configures multiple increments for a candidate PSCell and / or SCG, the multiple increments are used to instruct the terminal device to use different increments when performing selective PSCell and / or SCG activation in the next or two subsequent attempts, or to instruct the terminal device to use different increments when accessing a candidate PSCell and / or SCG in the next or two subsequent attempts.

[0091] If the MN configures multiple increments for all candidate PSCells and / or SCGs of one SN, the multiple increments are used to indicate that the terminal device should use different increments when returning to or accessing the same SN the next time or in two consecutive attempts.

[0092] An MN can configure only one SN Count value for one candidate PSCell and / or one candidate SCG. Based on this, in one embodiment, if the first information indicates that the SN Count value is cyclically or reusable, the unique SN Count value configured for one candidate PSCell and / or one candidate SCG is used to indicate that the terminal device should use the same SN Count value when returning to or accessing the same candidate PSCell and / or the same candidate SCG from the next time onwards or in each attempt.

[0093] An MN can configure only one SN Count value for one SN. Based on this, in one embodiment, if the first information indicates that the SN Count value is cyclically or reusable, the unique SN Count value configured for all candidate PSCells and / or SCGs of one SN is used to indicate that the terminal device should use the same SN Count value when returning to or accessing the same SN from the next time onwards or at every attempt.

[0094] The MN can configure only one SN Count value for all candidate PSCells and / or SCGs. Based on this, in one embodiment, if the first information indicates that the SN Count value is cyclically or reusable, the unique SN Count value configured for all candidate PSCells and / or SCGs is: The terminal device uses the same SN count value when performing selective PSCell and / or SCG activation in the next or each subsequent attempt; and the terminal device uses the same SN count value when accessing the candidate PSCell and / or SCG from the next time onwards or on every attempt.

[0095] In one embodiment, different SN count values ​​for one candidate PSCell and / or one candidate SCG are used to instruct the terminal device to use different SN count values ​​when returning to or accessing the same candidate PSCell and / or the same candidate SCG from the next time onwards or every time or two consecutive attempts.

[0096] Here, if the MN configures at least two SN Count values ​​(all of which are different) for one candidate PSCell and / or one candidate SCG, the different SN Count values ​​for one candidate PSCell and / or one candidate SCG are used to indicate that the UE should use different SN Count values ​​when returning to or accessing the same candidate PSCell and / or the same candidate SCG from the next time onwards, or for each or two consecutive attempts. If the RRC reconfiguration message does not include the first information or the first information indicates that the SN Count values ​​are not cyclically used or reusable, the MN is only allowed to use each SN Count value configured for the same candidate PSCell and / or the same candidate SCG once, i.e., after all of the SN Count values ​​configured for the same candidate PSCell and / or the same candidate SCG have been used once, the UE is not allowed to re-access the candidate PSCell and / or the candidate SCG, and the UE terminates the selective PSCell and / or SCG activation process. If the first information indicates that the SN count values ​​are cyclically usable or reusable, the SN count values ​​configured by the MN for each candidate PSCell and / or SCG may all be cyclically usable or reusable, where at least two of the SN count values ​​may be configured directly by the MN or may be indicated by the SN count value and the increment and / or change range.

[0097] For example, if the RRC reconfiguration message includes a list of SN count values ​​{1, 3, 4, 6} configured for candidate PSCell 1 / SCG 1 and does not include the first information, the terminal equipment will use SN count value 1 the first time it accesses PSCell 1 / SCG 1, use SN count value 3 the second time it accesses PSCell 1 / SCG 1, use SN count value 4 the third time it accesses PSCell 1 / SCG 1, and use SN count value 6 the fourth time it accesses PSCell 1 / SCG 1.

[0098] For example, if the MN configures two different SN count values, 2 and 5, for the candidate PSCell 1 / SCG 1, and the first information indicates that these two SN count values ​​can be cyclically used or reused, the two SN count values ​​configured for the candidate PSCell 1 / SCG 1 can be inferred as follows: the first SN count value, 2, is used when the terminal device accesses the candidate PSCell 1 / SCG 1 for the first time, the second SN count value, 5, is used when the terminal device accesses the candidate PSCell 1 / SCG 1 for the second time, the first SN count value, 2, is used when the terminal device accesses the candidate PSCell 1 / SCG 1 for the third time, and the second SN count value, 5, is used when the terminal device accesses the candidate PSCell 1 / SCG 1 for the fourth time.

[0099] In one embodiment, different SN count values ​​of all candidate PSCells and / or SCGs of one SN are used to instruct the terminal device to use different SN count values ​​when returning to or accessing the same SN from the next time onwards or every time or two consecutive attempts.

[0100] Here, when an MN configures at least two SN count values ​​(all of which are different) for one SN, the different SN count values ​​of all candidate PSCells and / or SCGs for one SN are used to indicate that the UE should use different SN count values ​​when returning to or accessing the same SN from the next time onwards, or for each or two consecutive attempts. If the RRC reconfiguration message does not include the first information or the first information indicates that SN count values ​​are not cyclically used or reused, each SN count value configured by the MN for the same SN is allowed to be used only once. That is, after all of the SN count values ​​configured by the MN for the same SN have been used once, the UE is not allowed to re-access the SN, or the UE does not evaluate or select candidate PSCells and / or SCGs for the SN in the process of performing cell group selective activation. If the first information is used to indicate that SN count values ​​are cyclically used or reused, the SN count values ​​that can be cyclically used or reused can be determined based on the correspondence between the first information and the SN count values. For example, if one piece of first information corresponds to an SN count value of one SN, all SN count values ​​of this SN can be recycled or reused.Also, if one piece of first information corresponds to an SN count value, only the SN count value that can be recycled or reused indicated by the first information can be recycled or reused.

[0101] In one embodiment, the different SN count values ​​of all candidate PSCells and / or SCGs are: Using different SN count values ​​when the terminal device performs selective PSCell and / or SCG activation from the next time onwards or every time or two consecutive attempts; and using a different SN count value when the terminal device accesses the candidate PSCell and / or SCG from the next time onwards, or every time, or in two consecutive attempts.

[0102] Here, if the MN configures at least two SN Count values ​​(all different SN Count values) for all candidate PSCells and / or SCGs, the different SN Count values ​​are used to instruct the terminal device to use different SN Count values ​​when performing selective PSCell and / or SCG activation in the next or each attempt, or to use different SN Count values ​​when the terminal device accesses a candidate PSCell and / or SCG in the next or each attempt. If the RRC reconfiguration message does not include the first information or the first information indicates that SN Count values ​​cannot be cyclically used or reused, each SN Count value configured by the MN for all candidate PSCells and / or SCGs is allowed to be used only once, that is, after all SN Count values ​​configured by the MN for all candidate PSCells and / or SCGs have been used once, the terminal device re-accesses any candidate PSCell and / or SCG. If the first information is used to indicate that SN Count values ​​can be cyclically used or reused, the SN Count values ​​that can be cyclically used or reused can be determined based on the correspondence between the first information and the SN Count values. For example, if one piece of first information corresponds to all SN count values, all of the SN count values ​​can be recycled or reused.Also, if one piece of first information corresponds to one SN count value, only the SN count value that can be recycled or reused indicated by the first information can be recycled or reused.

[0103] In one embodiment, if one candidate PSCell and / or SCG has only one SN count value, or one SN has only one SN count value, or all candidate PSCells and / or SCGs have only one SN count value, the method further comprises: When an SN count value expires or when the terminal device fails to access an SN using the SN count value, instructing the terminal device of an updated SN count value.

[0104] Here, the fact that the SN Count value has expired may be determined by the MN or fed back to the MN by the terminal device. The fact that the terminal device has failed to access the SN using the SN Count value may be notified to the MN by the SN or reported to the MN by the terminal device. Here, the updated SN Count value instructed by the MN to the terminal device and the expired SN Count value or the SN Count value used by the terminal device may correspond to the same candidate PSCell and / or the same candidate SCG, and may correspond to the same SN.

[0105] In one embodiment, the method further includes storing the SN count value being used and automatically updating the SN count value.

[0106] Here, the MN can store the SN count value used by the terminal device and automatically update the SN count value. The MN can automatically update the SN count value according to a configured update mechanism. For example, in the standard protocol, if the SN count value is incremented by 1 each time, the terminal device stores the SN count value configured by the MN in the initial RRC reconfiguration message and then automatically increments it by 1 each time it accesses the same candidate PSCell and / or the same candidate SCG, and the MN automatically increments the SN count value used most recently to 1 to update the latest SN count value.

number

[0107] Correspondingly, the embodiments of the present disclosure further provide a communication method performed by a terminal device, including a mobile phone, a tablet, a wearable device, etc. As shown in Figure 2, the method includes the following step 201:

[0108] In step 201, an RRC reconfiguration message sent from a mobile node is received. The RRC reconfiguration message includes: At least one or a set of SN count values ​​configured for each candidate PSCell and / or SCG; At least one or one set of SN count values ​​configured for all candidate PSCells and / or SCGs for each SN; and at least one or a set of SN count values ​​configured for all candidate PSCells and / or SCGs.

[0109] In one embodiment, the number or cumulative number of SN count values ​​configured for each candidate PSCell and / or SCG is used to indicate the maximum allowed number of times to return to or access the same candidate PSCell and / or the same candidate SCG.

[0110] In one embodiment, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or SCGs for each SN is used to indicate the maximum allowed number of times to return to or access the same SN.

[0111] In one embodiment, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or SCGs is used to indicate the maximum allowed number of times selective PSCell and / or SCG activation is performed.

[0112] In one embodiment, at least one or a set of SN count values ​​comprise: at least one SN count value; a range of SN count values ​​and one or more increments; One SN count value, one variation range and one or more increments; and indicated by at least one of an SN count value and one or more increments; Here, the increment is the amount of increase in the SN count value.

[0113] In one embodiment, the plurality of increments is: using different increments when the terminal device returns to or accesses the same candidate PSCell or the same candidate SCG in subsequent or two consecutive attempts; The terminal device uses different increments when successively performing selective SCG activation in the next or two consecutive attempts; using different increments when the terminal device accesses the candidate PSCell or SCG in the next or two consecutive attempts, and / or the terminal equipment uses different increments the next time it returns to or accesses the same SN on subsequent or two consecutive attempts.

[0114] In one embodiment, if no SN count value is available, the method further comprises: Not returning, accessing, or evaluating the candidate PSCell and / or SCG corresponding to the SN count value; not returning, accessing, or evaluating the SN corresponding to the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or SCGs of the SN corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or SCG; Deleting the configuration of all candidate PSCells and / or SCGs of the corresponding SN; Not returning, accessing, or evaluating all candidate PSCells and / or SCGs; Deleting the configuration of all candidate PSCells and / or SCGs; and terminating the execution process of selective PSCell and / or SCG activation.

[0115] Here, when the SN count value has the granularity of the candidate PSCell and / or SCG, the SN count value and the candidate PSCell and / or SCG correspond to each other, and the terminal device: Not returning, accessing, or evaluating the candidate PSCell and / or SCG corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or SCG; and terminating the execution process of selective PSCell and / or SCG activation.

[0116] When the SN count value has SN as the granularity, the SN count value and the SN correspond to each other, and the terminal device not returning, accessing, or evaluating the SN corresponding to the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or SCGs of the SN corresponding to the SN count value; Deleting the configuration of all candidate PSCells and / or SCGs of the corresponding SN; and terminating the execution process of selective PSCell and / or SCG activation.

[0117] If the SN count values ​​are configured for all candidate PSCells and / or SCGs, the terminal device: Not returning, accessing, or evaluating all candidate PSCells and / or SCGs; Deleting the configuration of all candidate PSCells and / or SCGs; and terminating the execution process of selective PSCell and / or SCG activation.

[0118] In one embodiment, the RRC reconfiguration message further includes first information, Whether the SN count value is recyclable or reusable; The validity period of the SN count value, and It is used to indicate at least one of the valid times of the SN count value.

[0119] In one embodiment, one piece of first information corresponds to one SN count value, or one piece of first information corresponds to the SN count value of one candidate PSCell and / or SCG, or one piece of first information corresponds to the SN count value of all candidate PSCells and / or SCGs, or one piece of first information corresponds to the SN count value of one SN.

[0120] When the terminal device receives the RRC reconfiguration message, the terminal device can determine the SN calculation value used to perform selective cell group activation based on the SN count value configured in the RRC reconfiguration message. Based on this, in one embodiment, the method includes: Accessing or returning to the same SN; accessing or returning the same candidate PSCell and / or the same candidate SCG; Accessing a candidate PSCell and / or SCG; and determining an SN count value to be used when performing at least one of: selective PSCell and / or SCG activation.

[0121] Here, the terminal device can determine the SN count value to be used based on the SN count value configured in the RRC reconfiguration message. The terminal device can also determine the SN count value to be used based on the SN count value configured in the RRC reconfiguration message and the first information.

[0122] For example, if the RRC reconfiguration message includes only one SN count value but does not include the first information, there is only one available SN count value. If the RRC reconfiguration message includes only one SN count value and includes the first information, the available SN count value and the valid number and / or valid time of the SN count value are determined based on the contents indicated by the first information.

[0123] For example, if the RRC reconfiguration message includes at least two SN count values ​​but does not include the first information, the number of available SN count values ​​is at least two, and the terminal device sequentially uses a different SN count value each time it performs the above operation. For example, the terminal device sequentially uses the next SN count value even when returning to a previously selected candidate PSCell / SCG. If the RRC reconfiguration message includes at least two SN count values ​​and includes the first information, the available SN count values ​​and the validity number and / or validity time of the SN count values ​​are determined based on the at least two configured SN count values ​​and the content indicated by the first information.

[0124] At least two SN count values ​​included in the RRC reconfiguration message are Reading directly from the RRC reconfiguration message; determining based on the range of SN count values ​​and one or more increments included in the RRC reconfiguration message; determining based on an SN count value, a variation range, and one or more increments included in an RRC reconfiguration message; and determining based on a single SN count value and one or more increments.

[0125] For example, the terminal device can determine at least two SN count values ​​based on the range of SN count values ​​and one or more increments. If the SN count value range configured by the MN is 1 to 10 (including the boundary value) and the increment is 2, the SN count values ​​determined by the terminal device are 1, 3, 5, 7, and 9.

[0126] The terminal equipment can determine at least two SN count values ​​based on the SN count value, the change range, and the increments or increments included in the RRC reconfiguration message. If the MN configures an SN count value of 1, a change range of 9, and two increments of 1 and 2, the SN count values ​​determined by the terminal equipment are 1, 2, 4, 5, 7, 8, and 10.

[0127] The terminal device can determine at least two SN count values ​​based on one SN count value and one or more increments. Here, if the RRC reconfiguration message includes at least two increments, the increments used when calculating the SN count value in two consecutive or subsequent attempts are different. For example, if the RRC reconfiguration message includes one SN count value, a first increment and a second increment, the one SN count value included in the RRC reconfiguration message is the first SN count value, and the terminal device calculates or derives the second SN count value using the first SN count value and the first increment, and calculates the third SN count value using the second SN count value and the second increment.

[0128] The process by which the terminal device accesses the SN via the acquired SN count value is as follows.

[0129] The terminal device acquires the SN count value,

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[0130] If the RRC reconfiguration message further includes first information, in one embodiment, the method includes: If the RRC reconfiguration message includes only one SN count value, and the first information indicates that the SN count value can be cyclically used or reused, Using the same SN count value each time when returning to or accessing the same candidate PSCell or the same candidate SCG; Using the same SN count value each time selective PSCell or SCG activation is performed; Use the same SN count value each time you access a candidate PSCell or SCG; and using the same SN count value each time returning to or accessing the same SN.

[0131] If the RRC reconfiguration message further includes first information, in one embodiment, the method includes: If one candidate PSCell and / or SCG has only one SN count value and the first information indicates that the SN count value can be cyclically used or reused, using the same SN count value each time when returning to or accessing the same candidate PSCell or the same candidate SCG; If all candidate PSCells and / or SCGs of one SN have only one SN count value, and the first information indicates that the SN count value can be cyclically used or reused, using the same SN count value each time when returning to or accessing the same SN; If all candidate PSCells and / or SCGs have only one SN count value and the first information indicates that the SN count values ​​are cyclically or reusable, the method further includes at least one of using the same SN count value each time when performing selective PSCell or SCG activation, or using the same SN count value each time when accessing a candidate PSCell or SCG.

[0132] In one embodiment, the method comprises: If one candidate PSCell and / or SCG has a different SN count value, sequentially use the different SN count value when returning to or accessing the same candidate PSCell or the same candidate SCG from the next time onwards or every time or two consecutive attempts; If all candidate PSCells and / or SCGs have different SN count values, sequentially use different SN count values ​​when performing selective PSCell or SCG activation in the next or every or two consecutive attempts, or sequentially use different SN count values ​​when accessing candidate PSCells or SCGs in the next or every or two consecutive attempts; If one SN has a different SN count value, sequentially using the different SN count value when returning to or accessing the same SN from the next time onwards or every time or two consecutive attempts.

[0133] Wherein, if the RRC reconfiguration message does not include the first information or the first information is used to indicate that the SN count value cannot be cyclically used or reused, the terminal device uses a different SN count value when performing the corresponding operation each time or in subsequent attempts. If the RRC reconfiguration message further includes the first information and the first information is used to indicate that the SN count value can be cyclically used or reused, When returning to or accessing the same candidate PSCell or the same candidate SCG in the next or subsequent attempts, different SN count values ​​of the candidate PSCell and / or SCG are sequentially cycled (for example, different SN count values ​​of 2 and 5 are cycled); Sequentially cycling through different SN count values ​​when performing selective PSCell or SCG activation in the next or two subsequent attempts, or sequentially cycling through different SN count values ​​when accessing candidate PSCells or SCGs in the next or two subsequent attempts; and cycling through different SN count values ​​when returning to or accessing the same SN on subsequent or two consecutive attempts.

[0134] In one embodiment, when the effective time and / or effective number of times of the SN count value indicated by the first information is exceeded, the method further comprises: Deleting the SN count value or not using the SN count value; Not returning, accessing, or evaluating the candidate PSCell and / or SCG corresponding to the SN count value; not returning, accessing, or evaluating the SN corresponding to the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or SCGs of the SN corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or SCG; Deleting the configuration of all candidate PSCells and / or SCGs of the corresponding SN; Not returning, accessing, or evaluating all candidate PSCells and / or SCGs; Deleting the configuration of all candidate PSCells and / or SCGs; and terminating the execution process of selective PSCell and / or SCG activation.

[0135] Here, if the valid time and / or valid number of times of the SN count value indicated by the first information is exceeded, the corresponding SN count value becomes invalid. Here, "exceeding the valid time of the SN count value indicated by the first information" means that the current time exceeds the valid time of the SN count value indicated by the first information or the current time is outside the valid time of the SN count value indicated by the first information, and "exceeding the valid number of times of the SN count value indicated by the first information" means that the number of times the SN count value is used is equal to or greater than the valid number of times of the SN count value indicated by the first information.

[0136] The validity time and / or validity count corresponding to different SN Count values ​​may be different. If one SN Count value expires, the terminal device will no longer use this SN Count value. If all SN Count values ​​of one candidate PSCell and / or SCG expire, the terminal device will no longer access or evaluate the corresponding candidate PSCell and / or SCG. If all SN Count values ​​of all candidate PSCells and / or SCGs expire, there are no SN Count values ​​available, and the terminal device releases the configuration and terminates the process of performing selective PSCell or SCG activation.

[0137] Here, if the valid time and / or valid number of times of the SN count value is exceeded and the SN count value is configured with the candidate PSCell and / or SCG as the granularity, the SN count value corresponds to the candidate PSCell and / or SCG, and in this case, the terminal device: Deleting the configuration of the corresponding candidate PSCell or SCG; Deleting the SN count value or not using the SN count value; Not returning, accessing, or evaluating the candidate PSCell and / or SCG corresponding to the SN count value; and terminating the execution process of selective PSCell and / or SCG activation.

[0138] If the valid time and / or valid number of times of the SN count value is exceeded and the SN count value is configured with the SN as the granularity, the SN count value corresponds to the SN, and the terminal device: Deleting the SN count value or not using the SN count value; Deleting the configuration of all candidate PSCells and / or SCGs of the corresponding SN; not returning, accessing, or evaluating the SN corresponding to the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or SCGs of the SN corresponding to the SN count value; and terminating the execution process of selective PSCell and / or SCG activation.

[0139] If the validity time or validity count of the SN count value is exceeded and the SN count value is configured for all candidate PSCells and / or SCGs, the terminal device: Deleting the SN count value or not using the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or SCGs; Deleting the configuration of all candidate PSCells and / or SCGs; and terminating the execution process of selective PSCell and / or SCG activation.

[0140] In one embodiment, if one candidate PSCell and / or SCG has only one SN count value, or one SN has only one SN count value, or all candidate PSCells and / or SCGs have only one SN count value, the method further comprises: receiving an updated SN Count value indicated by the MN when the SN Count value expires or when the terminal equipment fails to access the SN using the SN Count value.

[0141] For example, if one candidate PSCell and / or SCG has only one SN Count value, the terminal device uses the only SN Count value corresponding to the candidate PSCell and / or SCG in the RRC reconfiguration message when accessing the candidate PSCell and / or SCG in the first or subsequent attempts. If the SN Count value is valid, the terminal device can successfully access the candidate PSCell and / or SCG. If the SN Count value has expired, the access by the terminal device fails, and the terminal device feeds back to the MN that the SN Count value has expired, and the MN instructs the terminal device to update the SN Count value, and the terminal device receives the updated SN Count value instructed by the MN.

[0142] If decoding of the SN corresponding to the candidate PSCell and / or SCG fails, the SN replies to the terminal device to deny the terminal device access to the candidate PSCell and / or SCG, the terminal device feeds back to the MN that the terminal device failed to access the SN using the SN count value, the MN instructs the terminal device to update the SN count value, and the terminal device receives the updated SN count value instructed by the MN.

[0143] In addition, the updated SN count value that the MN instructs the terminal device to use and the expired SN count value or the SN count value used by the terminal device may correspond to the same candidate PSCell and / or the same candidate SCG, may correspond to the same SN, or may even correspond to all candidate PSCells and / or SCGs.

[0144] To improve the probability of successful access to the SN, in one embodiment the method comprises: the first SN count value has expired; and a failure to access the first SN using the first SN count value; and the first SN denies access, accessing the first SN using the second SN count value; The first SN count value and the second SN count value are both SN count values ​​configured for the first SN in the RRC reconfiguration message.

[0145] Here, the second SN count value is different from the first SN count value, and the number of the second SN count values ​​may be one or at least two.

[0146] For example, if an MN configures a first SN count value and a second SN count value for a candidate PSCell and / or SCG of a first SN, the terminal device will successfully access the corresponding candidate PSCell and / or SCG using the first SN count value during a first access to the candidate PSCell and / or SCG of the first SN.

[0147] When the terminal device accesses the candidate PSCell and / or SCG of the first SN for the second time, the terminal device first uses the first SN count value to access. If the first SN count value is still valid, the terminal device can successfully access the candidate PSCell and / or SCG of the first SN. If the first SN count value has expired or if access to the first SN using the first SN count value fails, the terminal device accesses the first SN using the second SN count value. If decoding of the first SN fails, the terminal device's access is denied, and the terminal device accesses the first SN using the second SN count value.

[0148] In one embodiment, the method further includes storing the SN count value being used and automatically updating the SN count value.

[0149] Here, the terminal equipment and the MN follow the same update mechanism to automatically update the unused SN count values.

[0150] Hereinafter, embodiments of the present disclosure will be described with reference to application examples.

[0151] Application Example 1: The MN configures a separate SN count value for each candidate PSCell and / or SCG In step 1, the MN sends an RRC reconfiguration message to the terminal device. The RRC reconfiguration message includes at least one or a set of SN count values ​​configured for each candidate PSCell and / or SCG. The signaling architecture of the RRC reconfiguration message is as follows:

[0152] RRC Reconfiguration: Conditional PSCell configuration: {candidate PSCell / SCG 1, SN counter, other configuration} {candidate PSCell / SCG 2, SN counter, other configuration} ... {candidate PSCell / SCG N, SN counter, other configuration}

[0153] In practical application, the SN counter in the RRC reconfiguration message is augmented as follows:

[0154] Option 1: The protocol specifies the maximum number of times to return to or access the same candidate PSCell and / or the same candidate SCG, and the MN configures for each candidate PSCell and / or SCG a corresponding number of SN count values ​​or an SN count value less than the maximum number specified in the protocol, for example, if the protocol specifies that the maximum allowed number of times to return to the same candidate PSCell and / or the same candidate SCG is 3, the MN configures 4 SN count values ​​for the corresponding candidate PSCell and / or SCG in the first RRC reconfiguration message.

[0155] Option 2: The protocol does not specify the maximum number of times to return to or access the same candidate PSCell and / or the same candidate SCG, and the MN implicitly indicates the maximum permitted number of times to return to or access the same candidate PSCell and / or the same candidate SCG via the number or cumulative number of SN Count values ​​configured for each candidate PSCell and / or SCG. For example, if the MN configures three SN Count values ​​for candidate PSCell 1 / SCG 1, this indicates that the UE can access the candidate PSCell 1 / SCG 1 three times or return to the candidate PSCell 1 / SCG 1 twice. Here, the number or cumulative number of SN Count values ​​configured for each candidate PSCell and / or SCG is used to indicate the maximum permitted number of times to return to or access the same candidate PSCell and / or the same candidate SCG.

[0156] Option 3: For the SN Count value configured for each candidate PSCell and / or SCG, the RRC reconfiguration message may include a specific SN Count value. For example, the RRC reconfiguration message may include at least one SN Count value. The RRC reconfiguration message may include one SN Count value, one change range, and one or more increments. The RRC reconfiguration message may further include one SN Count value and one or more increments, where the increment is an increase amount of the SN Count value, and the increment is an integer.

[0157] Here, when the first information indicates that the SN count value can be cyclically used or reused, the SN count value that is uniquely set for one candidate PSCell and / or SCG is used to indicate that the terminal device will use the same SN count value when returning to or accessing the same candidate PSCell and / or the same candidate SCG from the next time onwards or in each attempt.

[0158] Here, different SN count values ​​for one candidate PSCell and / or SCG are used to indicate that the terminal device will use different SN count values ​​when returning to or accessing the same candidate PSCell and / or the same candidate SCG from the next time onwards or every time or in two consecutive attempts.

[0159] Here, if the RRC reconfiguration message includes multiple different increments, the multiple different increments are used to instruct the terminal device to use different increments when returning to or accessing the same candidate PSCell and / or the same candidate SCG in the next or subsequent two attempts.

[0160] For example, if an MN configures an initial SN count value of 0 and two increments for the same candidate PSCell and / or the same candidate SCG, and the two increments are 1 and 2 respectively, the two increments are calculated as follows: when the terminal device accesses the same candidate PSCell and / or the same candidate SCG for the first time, it uses the initial SN count value of 0 and increment 1 to calculate SN count value 1; when the terminal device accesses the same candidate PSCell and / or the same candidate SCG for the second time, it uses SN count value 1 and increment 2 to calculate SN count value 3; and when the terminal device accesses the same candidate PSCell and / or the same candidate SCG for the third time, it uses SN count value 3 and increment 1 to calculate SN count value 4, and so on.

[0161] For example, if an MN configures an initial SN count value of 1 and two increments for the same candidate PSCell and / or the same candidate SCG, and these two increments are 1 and 2 respectively, these two increments can be inferred as follows: the terminal device uses initial SN count value 1 when it accesses the same candidate PSCell and / or the same candidate SCG for the first time, calculates SN count value 2 using SN count value 1 and increment 1 when it accesses the same candidate PSCell and / or the same candidate SCG for the second time, calculates SN count value 4 using SN count value 2 and increment 2 when it accesses the same candidate PSCell and / or the same candidate SCG for the second time, and calculates SN count value 5 using SN count value 4 and increment 1 when it accesses the same candidate PSCell and / or the same candidate SCG for the third time.

[0162] Option 4: The MN may further carry first information via at least one bit, which is used to indicate whether the SN Count value configured by the MN for a candidate PSCell and / or SCG is cyclically or reusable, and the valid time and / or valid number of times of the SN Count value, where one first information corresponds to one SN Count value, or one first information corresponds to the SN Count value of one candidate PSCell and / or one candidate SCG.

[0163] For example, if the MN configures two different SN count values ​​for the candidate PSCell 1 / SCG 1 and the first information indicates that the two SN count values ​​can be cyclically used or reused, the terminal device may use the first SN count value when accessing the candidate PSCell 1 / SCG 1 for the first time, the second SN count value when accessing the candidate PSCell 1 / SCG 1 for the second time, the first SN count value when accessing the candidate PSCell 1 / SCG 1 for the third time, and the second SN count value when accessing the candidate PSCell 1 / SCG 1 for the fourth time, and so on. In this manner, the SN count values ​​can be saved.

[0164] Option 5: If the MN has configured at least two different SN count values, when returning to a candidate PSCell and / or SCG, the terminal device first accesses the candidate PSCell and / or SCG corresponding to the first access using the SN count value used in the first access to the candidate PSCell and / or SCG. If the SN count value is still valid, the terminal device can successfully access the corresponding candidate PSCell and / or SCG. If the SN count value expires, the MN instructs the terminal device to update the SN count value, or if SN decoding fails and the terminal device replies with a denial of access, the terminal device accesses the corresponding candidate PSCell and / or SCG using the second SN count value.

[0165] Here, when one candidate PSCell and / or one candidate SCG has only one SN count value, if the SN count value expires or if the terminal device fails to access the SN using the SN count value, the SN count value to be updated is instructed to the terminal device.

[0166] Option 6: Both the MN and the terminal equipment store the SN count value used and automatically update the SN count value. The MN and the terminal equipment use the same SN count value update mechanism.

[0167] In step 2, the terminal device receives an RRC reconfiguration message sent from the MN.

[0168] In one embodiment, the terminal device determines the SN count value to be used when accessing or returning to the same candidate PSCell and / or the same candidate SCG based on the received RRC reconfiguration message.

[0169] In one embodiment, if the RRC reconfiguration message does not include the first information and there is no available SN count value, the method further comprises: Not returning, accessing, or evaluating the candidate PSCell and / or SCG corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or SCG; and terminating the execution process of selective PSCell and / or SCG activation.

[0170] In one embodiment, if one candidate PSCell and / or SCG has only one SN count value and the first information indicates that the SN count value can be cyclically used or reused, the terminal device uses the same SN count value each time it returns to or accesses the same candidate PSCell or the same candidate SCG.

[0171] In one embodiment, if one candidate PSCell and / or SCG has different SN count values, the terminal device sequentially uses the different SN count values ​​when returning to or accessing the same candidate PSCell or the same candidate SCG from the next time onwards or every time or in two consecutive attempts.

[0172] In one embodiment, when the valid time or the valid number of times of the SN count value indicated by the first information is exceeded, the terminal device further: Deleting the SN count value or not using the SN count value; Not returning, accessing, or evaluating the candidate PSCell and / or SCG corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or SCG; and terminating the execution process of selective PSCell and / or SCG activation.

[0173] In one embodiment, if one candidate PSCell and / or SCG has only one SN count value, the terminal device may further receive an updated SN count value indicated by the MN if the SN count value expires or if the terminal device fails to access the SN using the SN count value.

[0174] In one embodiment, the terminal device further comprises: the first SN count value has expired; and a failure to access the first SN using the first SN count value; and the first SN denies access, the first SN can be accessed using the second SN count value; The first SN count value and the second SN count value are both SN count values ​​configured for the first SN in the RRC reconfiguration message.

[0175] Application Example 2: MN configures the same SN count value for all candidate PSCells and / or SCGs In step 1, the MN sends an RRC reconfiguration message to the terminal device. The RRC reconfiguration message includes at least one or a set of SN count values ​​configured for all candidate PSCells and / or SCGs. The signaling architecture of the RRC reconfiguration message is as follows:

[0176] RRC Reconfiguration: Conditional PSCell configuration: SN counter {candidate PSCell 1, other configuration} {candidate PSCell 2, other configuration} ... {candidate PSCell N, other configuration}

[0177] wherein at least one or one set of SN count values ​​are configured: at least one SN count value; a range of SN count values ​​and one or more increments; One SN count value, one variation range and one or more increments; and indicated by at least one of an SN count value and one or more increments; Here, the increment is the amount of increase in the SN count value.

[0178] In practical application, the SN counter in the RRC reconfiguration message is augmented as follows:

[0179] Option 1: The protocol specifies the maximum number of times selective PSCell and / or SCG activation is performed, and the MN configures a corresponding number of SN count values ​​or an SN count value less than the maximum number specified in the protocol for all candidate PSCells and / or SCGs, for example, if the protocol specifies that the maximum number of times selective PSCell and / or SCG activation is performed is 3, the MN configures 4 SN count values ​​for all candidate PSCells and / or SCGs in the first RRC reconfiguration message.

[0180] Option 2: The protocol does not specify the maximum number of times selective PSCell and / or SCG activation is performed, and the MN implicitly indicates the maximum permitted number of times selective PSCell and / or SCG activation is performed via the number or cumulative number of configured SN Count values. For example, if the MN configures an SN Count value of 3 for all candidate PSCells, this indicates that the maximum permitted number of times the UE is allowed to perform selective PSCell and / or SCG activation is 3. Here, the number or cumulative number of configured SN Count values ​​for all candidate PSCells and / or SCGs is used to indicate the maximum permitted number of times selective PSCell and / or SCG activation is performed.

[0181] Option 3: For SN count values ​​configured for all candidate PSCells and / or SCGs, the RRC reconfiguration message may include specific SN count values. If the RRC reconfiguration message includes at least two different SN count values, the SN count values ​​are used to instruct the terminal device to sequentially use different SN count values ​​each time it performs selective cell group activation, and to sequentially use the next SN count value even when it returns to a previously selected candidate PSCell and / or SCG. Here, if no SN count value is available, the terminal device releases the configuration and stops the selective cell group activation process.

[0182] Here, when all candidate PSCells and / or SCGs have only one SN count value, if the SN count value expires or if the terminal device fails to access the SN using the SN count value, the SN count value to be updated is instructed to the terminal device.

[0183] Here, if the first information indicates that the SN count value can be cyclically used or reused, the SN count value that is uniquely set for all candidate PSCells and / or SCGs is: The terminal device uses the same SN count value when performing selective PSCell and / or SCG activation in the next or each subsequent attempt; and the terminal device uses the same SN count value when accessing the candidate PSCell and / or SCG from the next time onwards or on every attempt.

[0184] In one embodiment, the different SN count values ​​of all candidate PSCells and / or SCGs are: Using different SN count values ​​when the terminal device performs selective PSCell and / or SCG activation from the next time onwards or every time or two consecutive attempts; and using a different SN count value when the terminal device accesses the candidate PSCell and / or SCG from the next time onwards, or every time, or in two consecutive attempts.

[0185] In one embodiment, if the RRC reconfiguration message includes multiple different increments, the multiple different increments may be: using different increments when the terminal device returns to or accesses the same candidate PSCell and / or the same candidate SCG in subsequent or two consecutive attempts; Using different increments when the terminal device performs selective PSCell and / or SCG activation in the next or two consecutive attempts; and using different increments when the terminal device accesses the candidate PSCell and / or SCG in the next or two consecutive attempts.

[0186] Regarding how to calculate the SN count value using different increments, please refer to the related description in Example 1, and the description will be omitted here.

[0187] Option 4: For at least two SN Count values ​​configured for all candidate PSCells and / or SCGs, the RRC reconfiguration message may include one SN Count value and one or more increments (delta values).

[0188] Option 5: For at least two SN count values ​​configured for all candidate PSCells and / or SCGs, the RRC reconfiguration message may include one SN count value range and one or more increments, or the RRC reconfiguration message may include one SN count value, one variation range and one or more increments.

[0189] For example, the range of the SN Count value is 1-5 (inclusive), with an increment of 1. The configured at least two SN Count values ​​can be used to instruct the terminal equipment to sequentially use different SN Count values ​​each time it performs selective cell group activation, for example, using 1 the first time, using 2 the second time, and so on.

[0190] Option 6: The MN can configure SN Count values ​​for all candidate PSCells and / or SCGs, and can also configure first information carried on at least one bit. The first information is used to indicate whether the SN Count values ​​configured by the MN for all candidate PSCells and / or SCGs can be cyclically used or reused, and the validity time and / or validity number of the SN Count values. Here, one piece of first information corresponds to the SN Count values ​​of all candidate PSCells and / or SCGs.

[0191] For example, if the MN configures two different SN count values ​​for all candidate PSCells and / or SCGs, and the first information indicates that the two SN count values ​​are cyclically usable or reusable, the RRC reconfiguration message may be used to instruct the UE to use the first SN count value when performing selective cell group activation for the first time, the second SN count value when performing selective cell group activation for the second time, the first SN count value when performing selective cell group activation for the third time, and the second SN count value when performing selective cell group activation for the fourth time, and so on. In this manner, SN count values ​​can be saved.

[0192] Option 7: Both the MN and the terminal equipment store the SN count value used and automatically update the SN count value. The MN and the terminal equipment use the same SN count value update mechanism.

[0193] In step 2, the terminal device receives an RRC reconfiguration message sent from the MN.

[0194] In one embodiment, the terminal device, based on the received RRC reconfiguration message, accessing or returning the same candidate PSCell and / or the same candidate SCG; Accessing a candidate PSCell and / or SCG; and determining an SN count value to be used when performing at least one of selective PSCell and / or SCG activation.

[0195] In one embodiment, if the RRC reconfiguration message does not include the first information and there is no available SN count value, the method further comprises: Not returning, accessing, or evaluating all candidate PSCells and / or SCGs; Deleting the configuration of all candidate PSCells and / or SCGs; and terminating the execution process of selective PSCell and / or SCG activation.

[0196] In one embodiment, if all candidate PSCells and / or SCGs have only one SN count value, and the first information indicates that the SN count value can be cyclically used or reused, the terminal device: Using the same SN count value each time selective PSCell or SCG activation is performed; and using the same SN count value each time a candidate PSCell or SCG is accessed.

[0197] In one embodiment, if all candidate PSCells and / or SCGs have different SN count values, the terminal device: Sequentially using different SN count values ​​when performing selective PSCell or SCG activation in subsequent attempts or in each or two consecutive attempts; and sequentially using different SN count values ​​when accessing the candidate PSCell or SCG on subsequent attempts or on every attempt or on two consecutive attempts.

[0198] In one embodiment, when the valid time and / or the valid number of times of the SN count value indicated by the first information is exceeded, the terminal device further: Deleting the SN count value or not using the SN count value; Not returning, accessing, or evaluating the candidate PSCell and / or SCG corresponding to the SN count value; Returning or accessing all candidate PSCells and / or SCGs; Deleting the configuration of all candidate PSCells and / or SCGs; and terminating the execution process of selective PSCell and / or SCG activation.

[0199] In one embodiment, if all candidate PSCells and / or SCGs have only one SN count value, the terminal device may further receive an updated SN count value indicated by the MN if the SN count value expires or if the terminal device fails to access an SN using the SN count value.

[0200] In one embodiment, the terminal device further comprises: the first SN count value has expired; and a failure to access the first SN using the first SN count value; and the first SN denies access, the first SN can be accessed using the second SN count value; The first SN count value and the second SN count value are both SN count values ​​configured for the first SN in the RRC reconfiguration message.

[0201] Application Example 3: The MN configures the same SN count value for all candidate PSCells and / or SCGs for each SN In step 1, the MN sends an RRC reconfiguration message to the terminal device. The RRC reconfiguration message includes at least one or a set of SN count values ​​configured for all candidate PSCells and / or SCGs for each SN. Here, the signaling architecture of the RRC reconfiguration message is as follows:

[0202] RRC Reconfiguration: Conditional PSCell configuration: { SN1{ SN counter {candidate PSCell 1, other configuration} {candidate PSCell 2, other configuration}} SN2{ SN counter {candidate PSCell 3, other configuration} ... {candidate PSCell N, other configuration}} }

[0203] In practical application, the SN counter in the RRC reconfiguration message is augmented as follows:

[0204] Option 1: The protocol specifies the maximum number of times to return to or access the same SN, and the MN configures the corresponding number of SN Count values ​​for each SN, or an SN Count value that is less than or equal to the maximum number specified in the protocol. For example, if the protocol specifies that the maximum number of times allowed to return to the same SN is 3, the MN configures 4 SN Count values ​​for the corresponding SN in the first RRC reconfiguration message.

[0205] Option 2: The protocol does not specify the maximum number of times to return to or access the same SN, and the MN implicitly indicates the maximum permitted number of times to return to or access the same SN through the number or cumulative number of SN count values ​​configured for the SNs. For example, if the MN configures three SN count values ​​for SN1, this indicates that the UE can access the SN1 three times or return to SN1 twice. Here, the number or cumulative number of SN count values ​​configured for each SN is used to indicate the maximum permitted number of times to return to or access the same SN.

[0206] Option 3: For an SN Count value configured for each SN, the RRC reconfiguration message may include a specific SN Count value, for example, at least one SN Count value. The RRC reconfiguration message may also include one SN Count value, one change range, and one or more increments. The RRC reconfiguration message may also include one SN Count value and one or more increments, where the increment is an increase amount of the SN Count value, and the increment is an integer.

[0207] Here, if the first information indicates that the SN count value can be cyclically used or reused, the SN count value that is uniquely set for all candidate PSCells and / or SCGs of one SN is used to indicate that the terminal equipment will use the same SN count value when returning to or accessing the same SN from the next time onwards or in each attempt.

[0208] Here, the different SN count values ​​of all candidate PSCells and / or SCGs of one SN are used to indicate that the terminal device will use different SN count values ​​when returning to or accessing the same SN from the next time onwards or every time or in two consecutive attempts.

[0209] Here, if the RRC reconfiguration message includes multiple different increments, the multiple different increments are used to instruct the terminal device to use different increments when returning to or accessing the same SN from the next time onwards or in two consecutive attempts.

[0210] Regarding how to calculate the SN count value using different increments, please refer to the related description in Example 1, and the description will be omitted here.

[0211] Option 4: The MN may further carry first information via at least one bit, which is used to indicate whether the SN Count value configured by the MN for the candidate PSCell and / or SCG is cyclically or reusable, and the valid time and / or valid number of times of the SN Count value, where one piece of first information corresponds to the SN Count value of one SN.

[0212] For example, if the MN configures two different SN count values ​​for the candidate SN1 and the first information indicates that the two SN count values ​​can be cyclically used or reused, the RRC reconfiguration message can instruct the UE to use the first SN count value when accessing SN1 for the first time, the second SN count value when accessing SN1 for the second time, the first SN count value when accessing SN1 for the third time, and the second SN count value when accessing SN1 for the fourth time, and so on. In this manner, the SN count values ​​can be saved.

[0213] Option 5: Both the MN and the terminal equipment store the SN count value used and automatically update the SN count value. The MN and the terminal equipment use the same SN count value update mechanism.

[0214] In step 2, the terminal device receives an RRC reconfiguration message sent from the MN.

[0215] In one embodiment, the terminal device determines the SN count value to be used when accessing or returning to the same SN based on the received RRC reconfiguration message.

[0216] In one embodiment, if the RRC reconfiguration message does not include the first information and there is no available SN count value, the method further comprises: not returning, accessing, or evaluating the SN corresponding to the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or SCGs of the SN corresponding to the SN count value; Deleting the configuration of all candidate PSCells and / or SCGs of the corresponding SN; and terminating the execution process of selective PSCell and / or SCG activation.

[0217] In one embodiment, if all candidate PSCells and / or SCGs for one SN have only one SN count value and the first information indicates that the SN count value can be cyclically used or reused, the terminal device uses the same SN count value each time it returns to or accesses the same SN.

[0218] In one embodiment, if one candidate PSCell and / or SCG has different SN count values, the terminal device sequentially uses the different SN count values ​​when returning to or accessing the same candidate PSCell or the same candidate SCG from the next time onwards or every time or two consecutive attempts.

[0219] In one embodiment, when the valid time or the valid number of times of the SN count value indicated by the first information is exceeded, the terminal device further: Deleting the SN count value or not using the SN count value; Deleting the configuration of all candidate PSCells and / or SCGs of the corresponding SN; not returning, accessing, or evaluating the SN corresponding to the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or SCGs of the SN corresponding to the SN count value; and terminating the execution process of selective PSCell and / or SCG activation.

[0220] In one embodiment, the terminal device further comprises: the first SN count value has expired; and a failure to access the first SN using the first SN count value; and the first SN denies access, the first SN can be accessed using the second SN count value; The first SN count value and the second SN count value are both SN count values ​​configured for the first SN in the RRC reconfiguration message.

[0221] According to the communication method, device, network device, terminal device, and storage medium disclosed herein, an MN transmits an RRC reconfiguration message to a terminal device, and the terminal device receives the RRC reconfiguration message transmitted from the MN, the RRC reconfiguration message including at least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG, at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN, and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs. By using the above technical means, the MN can configure appropriate SN count values ​​for the candidate PSCells and / or candidate SCGs via the RRC reconfiguration message, so that under an NR-DC scenario, the terminal device determines an SN count value to be used for performing selective cell group activation from the configured SN count values, and then performs a new cell group activation based on the obtained SN count value.

number

number

[0222] To realize the communication method of the embodiment of the present disclosure, the embodiment of the present disclosure further provides a communication device provided on the MN, which includes a first sending unit 301, as shown in FIG.

[0223] The first sending unit 301 is configured to send an RRC reconfiguration message to a terminal device, the RRC reconfiguration message including: At least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

[0224] In one embodiment, the number or cumulative number of SN count values ​​configured for each candidate PSCell and / or each candidate SCG is used to indicate the maximum permitted number of times to return to or access the same candidate PSCell and / or the same candidate SCG.

[0225] In one embodiment, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN is used to indicate the maximum allowed number of times to return to or access the same SN.

[0226] In one embodiment, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs is used to indicate the maximum allowed number of times selective PSCell and / or SCG activation is performed.

[0227] In one embodiment, at least one or at least one set of SN count values ​​comprise: at least one SN count value; a range of SN count values ​​and one or more increments; One SN count value, one variation range and one or more increments; and indicated by at least one of an SN count value and one or more increments; Here, the increment is the amount of increase in the SN count value.

[0228] In one embodiment, the plurality of increments is: using different increments when the terminal device returns to or accesses the same candidate PSCell and / or the same candidate SCG in subsequent or two consecutive attempts; Using different increments when the terminal device performs selective PSCell and / or SCG activation in the next or two consecutive attempts; using different increments when the terminal device accesses the candidate PSCell and / or the candidate SCG in subsequent or two consecutive attempts; and / or the terminal equipment uses different increments the next time it returns to or accesses the same SN on subsequent or two consecutive attempts.

[0229] In one embodiment, the RRC reconfiguration message further includes first information, the first information comprising: Whether the SN count value is recyclable or reusable; The validity period of the SN count value, and It is used to indicate at least one of the valid times of the SN count value.

[0230] In one embodiment, the first information corresponds to an SN count value; or One first information corresponds to an SN count value of one candidate PSCell and / or one candidate SCG, or One first information corresponds to the SN count values ​​of all candidate PSCells and / or all candidate SCGs, or One piece of first information corresponds to the SN count value of one SN.

[0231] In one embodiment, when the first information indicates that the SN count value can be cyclically used or reused, the SN count value that is uniquely set for one candidate PSCell and / or one candidate SCG is used to indicate that the terminal device will use the same SN count value when returning to or accessing the same candidate PSCell and / or the same candidate SCG from the next time onwards or in each attempt.

[0232] In one embodiment, when the first information indicates that the SN count value can be cyclically used or reused, the SN count value that is uniquely set for all candidate PSCells and / or all candidate SCGs of one SN is used to indicate that the terminal equipment should use the same SN count value when returning to or accessing the same SN from the next time onwards or on each attempt.

[0233] In one embodiment, when the first information indicates that the SN count value is cyclically or reusable, the SN count value that is uniquely set for all candidate PSCells and / or all candidate SCGs is: The terminal device uses the same SN count value when performing selective PSCell and / or SCG activation in the next or each subsequent attempt; and using the same SN count value when the terminal device accesses the candidate PSCell and / or candidate SCG on subsequent or every attempt.

[0234] In one embodiment, different SN count values ​​for one candidate PSCell and / or one candidate SCG are used to instruct the terminal device to use different SN count values ​​when returning to or accessing the same candidate PSCell and / or the same candidate SCG from the next time onwards or every time or two consecutive attempts.

[0235] In one embodiment, different SN count values ​​for all candidate PSCells and / or all candidate SCGs of an SN are used to instruct the terminal device to use different SN count values ​​when returning to or accessing the same SN from the next time onwards or every time or two consecutive attempts.

[0236] In one embodiment, the different SN count values ​​of all candidate PSCells and / or all candidate SCGs are: Using different SN count values ​​when the terminal device performs selective PSCell and / or SCG activation from the next time onwards or every time or two consecutive attempts; and to instruct the terminal device to use a different SN count value when accessing the candidate PSCell and / or candidate SCG from the next time onwards, or every time, or in two consecutive attempts.

[0237] In one embodiment, when one candidate PSCell and / or one candidate SCG has only one SN count value, or one SN has only one SN count value, or all candidate PSCells and / or all candidate SCGs have only one SN count value, the device further includes a first processing unit, which is configured to instruct the terminal device of an SN count value to be updated when the SN count value expires or when the terminal device fails to access an SN using the SN count value.

[0238] In one embodiment, the first processing unit is further configured to store the SN count value in use and to automatically update the SN count value.

[0239] In practical application, the first sending unit 301 can be realized by a combination of a processor and a communication interface in a communication device, and the first processing unit can be realized by a processor in a communication device.

[0240] Although the above embodiments have been described with reference to the division of each program module when the communication device performs communication, in actual application, the above processes can be completed by allocating them to different program modules as needed, i.e., the internal structure of the device can be divided into different program modules to complete all or part of the above processes. Furthermore, the communication device according to the above embodiments is based on the same concept as the communication method embodiments, and the specific implementation process can be referred to the method embodiments, and the description thereof will be omitted here.

[0241] To realize the communication method of the embodiment of the present disclosure, the embodiment of the present disclosure further provides a communication device provided on a terminal device, and as shown in FIG. 4, the device includes: a first receiving unit 401:

[0242] The first receiving unit 401 is configured to receive an RRC reconfiguration message sent from the MN, the RRC reconfiguration message comprising: At least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

[0243] In one embodiment, the number or cumulative number of SN count values ​​configured for each candidate PSCell and / or each candidate SCG is used to indicate the maximum permitted number of times to return to or access the same candidate PSCell and / or the same candidate SCG.

[0244] In one embodiment, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN is used to indicate the maximum allowed number of times to return to or access the same SN.

[0245] In one embodiment, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs is used to indicate the maximum allowed number of times selective PSCell and / or SCG activation is performed.

[0246] In one embodiment, at least one or at least one set of SN count values ​​comprise: at least one SN count value; a range of SN count values ​​and one or more increments; One SN count value, one variation range and one or more increments; and indicated by at least one of an SN count value and one or more increments; Here, the increment is the amount of increase in the SN count value.

[0247] In one embodiment, the plurality of increments is: using different increments when the terminal device returns to or accesses the same candidate PSCell or the same candidate SCG in subsequent or two consecutive attempts; The terminal device uses different increments when successively performing selective SCG activation in the next or two consecutive attempts; using different increments when the terminal device accesses the candidate PSCell or candidate SCG in the next or two consecutive attempts, and / or the terminal equipment uses different increments the next time it returns to or accesses the same SN on subsequent or two consecutive attempts.

[0248] In one embodiment, if there is no SN count value available, the device further comprises a second processing unit, wherein the second processing unit: Not returning, accessing, or evaluating the candidate PSCell and / or candidate SCG corresponding to the SN count value; not returning, accessing, or evaluating the SN corresponding to the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or all candidate SCGs of the SN corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or the corresponding candidate SCG; Deleting the configuration of all candidate PSCells and / or all candidate SCGs of the corresponding SN; Not returning to, accessing, or evaluating all candidate PSCells and / or all candidate SCGs; Deleting the configuration of all candidate PSCells and / or all candidate SCGs; and terminating the execution process of selective PSCell and / or SCG activation.

[0249] In one embodiment, the RRC reconfiguration message further includes first information, the first information comprising: Whether the SN count value is recyclable or reusable; The validity period of the SN count value, and It is used to indicate at least one of the valid times of the SN count value.

[0250] In one embodiment, the first information corresponds to an SN count value; or One first information corresponds to an SN count value of one candidate PSCell and / or one candidate SCG, or One first information corresponds to the SN count values ​​of all candidate PSCells and / or all candidate SCGs, or One piece of first information corresponds to the SN count value of one SN.

[0251] In one embodiment, the apparatus further comprises a determining unit; The decision unit: Accessing or returning to the same SN; accessing or returning the same candidate PSCell and / or the same candidate SCG; Accessing a candidate PSCell and / or a candidate SCG; and determining an SN count value to be used when performing at least one of selective PSCell and / or SCG activation.

[0252] In one embodiment, the second processing unit further comprises: If one candidate PSCell and / or one candidate SCG has only one SN count value, and the first information indicates that the SN count value can be cyclically used or reused, using the same SN count value each time when returning to or accessing the same candidate PSCell or the same candidate SCG; If all candidate PSCells and / or SCGs of one SN have only one SN count value, and the first information indicates that the SN count value can be cyclically used or reused, using the same SN count value each time when returning to or accessing the same SN; If all candidate PSCells and / or all candidate SCGs have only one SN count value and the first information indicates that the SN count values ​​are cyclically or reusable, the device is configured to perform at least one of: using the same SN count value each time when performing selective PSCell or SCG activation; or using the same SN count value each time when accessing a candidate PSCell or the same candidate SCG.

[0253] In one embodiment, the second processing unit further comprises: If one candidate PSCell and / or one candidate SCG have different SN count values, sequentially use different SN count values ​​when returning to or accessing the same candidate PSCell or the same candidate SCG from the next time onwards or every time or two consecutive attempts; If all candidate PSCells and / or all candidate SCGs have different SN count values, sequentially use different SN count values ​​when performing selective PSCell or SCG activation in the next or every or two consecutive attempts, or sequentially use different SN count values ​​when accessing a candidate PSCell or candidate SCG in the next or every or two consecutive attempts; and if one SN has a different SN count value, sequentially using the different SN count value when returning to or accessing the same SN from the next time onwards or every time or two consecutive attempts.

[0254] In one embodiment, when the valid time and / or the valid number of times of the SN count value indicated by the first information is exceeded, the second processing unit further: Deleting the SN count value or not using the SN count value; Not returning, accessing, or evaluating the candidate PSCell and / or candidate SCG corresponding to the SN count value; not returning, accessing, or evaluating the SN corresponding to the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or all candidate SCGs of the SN corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or the corresponding candidate SCG; Deleting the configuration of all candidate PSCells and / or all candidate SCGs of the corresponding SN; Not returning to, accessing, or evaluating all candidate PSCells and / or all candidate SCGs; Deleting the configuration of all candidate PSCells and / or all candidate SCGs; and terminating the execution process of selective PSCell and / or SCG activation.

[0255] In one embodiment, when one candidate PSCell and / or one candidate SCG has only one SN count value, or one SN has only one SN count value, or all candidate PSCells and / or all candidate SCGs have only one SN count value, the device further includes a second receiving unit; The second receiving unit is configured to receive an updated SN count value indicated by the MN when the SN count value expires or when the terminal equipment fails to access the SN using the SN count value.

[0256] In one embodiment, the second processing unit further comprises: the first SN count value has expired; and a failure to access the first SN using the first SN count value; and the first SN denies access; and if the first SN denies access, the second SN count value is used to access the first SN; The first SN count value and the second SN count value are both SN count values ​​configured for the first SN in the RRC reconfiguration message.

[0257] In one embodiment, the second processing unit is further configured to store the SN count value in use and to automatically update the SN count value.

[0258] In practical application, the first receiving unit 401 and the second receiving unit may be realized by a combination of a processor and a communication interface in a communication device, and the determining unit, the second processing unit and the acquiring unit may be realized by a processor in a communication device.

[0259] Although the above embodiments have been described with reference to the division of each program module when the communication device performs communication, in actual application, the above processes can be completed by allocating them to different program modules as needed, i.e., the internal structure of the device can be divided into different program modules to complete all or part of the above processes. Furthermore, the communication device according to the above embodiments is based on the same concept as the communication method embodiments, and the specific implementation process can be referred to the method embodiments, and the description thereof will be omitted here.

[0260] In order to realize the master node-side method according to the embodiment of the present disclosure based on the hardware implementation of the above program modules, the embodiment of the present disclosure further provides a network device including a master node. As shown in FIG. 5 , the network device 500 includes a first communication interface 501 and a first processor 502; The first communication interface 501 is capable of exchanging information with other network nodes; The first processor 502 is connected to the first communication interface 501, and is used to realize information interaction with other network nodes, and to implement the methods of one or more technical solutions on the master node side when executing a computer program, which is stored in the first memory 503.

[0261] Specifically, the first communication interface 501 is configured to send an RRC reconfiguration message to a terminal device, and the RRC reconfiguration message includes: At least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

[0262] In one embodiment, the number or cumulative number of SN count values ​​configured for each candidate PSCell and / or each candidate SCG is used to indicate the maximum permitted number of times to return to or access the same candidate PSCell and / or the same candidate SCG.

[0263] In one embodiment, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN is used to indicate the maximum allowed number of times to return to or access the same SN.

[0264] In one embodiment, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs is used to indicate the maximum allowed number of times selective PSCell and / or SCG activation is performed.

[0265] In one embodiment, at least one or at least one set of SN count values ​​comprise: at least one SN count value; a range of SN count values ​​and one or more increments; One SN count value, one variation range and one or more increments; and indicated by at least one of an SN count value and one or more increments; Here, the increment is the amount of increase in the SN count value.

[0266] In one embodiment, the plurality of increments is: using different increments when the terminal device returns to or accesses the same candidate PSCell and / or the same candidate SCG in subsequent or two consecutive attempts; Using different increments when the terminal device performs selective PSCell and / or SCG activation in the next or two consecutive attempts; using different increments when the terminal device accesses the candidate PSCell and / or SCG in subsequent or two consecutive attempts; and / or the terminal equipment uses different increments the next time it returns to or accesses the same SN on subsequent or two consecutive attempts.

[0267] In one embodiment, the RRC reconfiguration message further includes first information, Whether the SN count value is recyclable or reusable; The validity period of the SN count value, and It is used to indicate at least one of the valid times of the SN count value.

[0268] In one embodiment, the first information corresponds to an SN count value; or One first information corresponds to an SN count value of one candidate PSCell and / or one candidate SCG, or One first information corresponds to the SN count values ​​of all candidate PSCells and / or all candidate SCGs, or One piece of first information corresponds to the SN count value of one SN.

[0269] In one embodiment, when the first information indicates that the SN count value can be cyclically used or reused, the SN count value that is uniquely set for one candidate PSCell and / or one candidate SCG is used to indicate that the terminal device will use the same SN count value when returning to or accessing the same candidate PSCell and / or the same candidate SCG from the next time onwards or in each attempt.

[0270] In one embodiment, when the first information indicates that the SN count value can be cyclically used or reused, the SN count value that is uniquely set for all candidate PSCells and / or all candidate SCGs of one SN is used to indicate that the terminal equipment should use the same SN count value when returning to or accessing the same SN from the next time onwards or on each attempt.

[0271] In one embodiment, when the first information indicates that the SN count value is cyclically or reusable, the SN count value that is uniquely set for all candidate PSCells and / or all candidate SCGs is: The terminal device uses the same SN count value when performing selective PSCell and / or SCG activation in the next or each subsequent attempt; and using the same SN count value when the terminal device accesses the candidate PSCell and / or candidate SCG on subsequent or every attempt.

[0272] In one embodiment, different SN count values ​​for one candidate PSCell and / or one candidate SCG are used to instruct the terminal device to use different SN count values ​​when returning to or accessing the same candidate PSCell and / or the same candidate SCG from the next time onwards or every time or two consecutive attempts.

[0273] In one embodiment, different SN count values ​​for all candidate PSCells and / or all candidate SCGs of an SN are used to instruct the terminal device to use different SN count values ​​when returning to or accessing the same SN from the next time onwards or every time or two consecutive attempts.

[0274] In one embodiment, the different SN count values ​​of all candidate PSCells and / or all candidate SCGs are: Using different SN count values ​​when the terminal device performs selective PSCell and / or SCG activation from the next time onwards or every time or two consecutive attempts; and to instruct the terminal device to use a different SN count value when accessing the candidate PSCell and / or candidate SCG from the next time onwards, or every time, or in two consecutive attempts.

[0275] In one embodiment, if one candidate PSCell and / or SCG has only one SN count value, or one SN has only one SN count value, or all candidate PSCells and / or all candidate SCGs have only one SN count value, the first processor 502 is configured to instruct the terminal device of an SN count value to be updated if the SN count value expires or if the terminal device fails to access an SN using the SN count value.

[0276] In one embodiment, the first processor 502 is further configured to store the SN count value being used and to automatically update the SN count value.

[0277] The specific processing steps of the first processor 502 and the first communication interface 501 can be understood by referring to the above method.

[0278] Of course, in actual application, each component in the network device 500 is coupled via a bus system 504. It is understood that the bus system 504 is used to realize connection communication between these components. The bus system 504 further includes a power bus, a control bus, and a status signal bus in addition to a data bus. However, for clarity, various buses are referred to as the bus system 504 in FIG. 5.

[0279] The first memory 503 in the embodiments of the present disclosure is used to store various types of data to support the operation of the network device 500. Examples of this data include any computer programs for running on the network device 500.

[0280] The method according to the embodiment of the present disclosure may be implemented within or by the first processor 502. The first processor 502 may be an integrated circuit chip having signal processing capabilities. In the implementation process, each step of the method may be executed by an integrated logic circuit in hardware or by instructions in software form within the first processor 502. The first processor 502 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or the like. The first processor 502 may implement or execute each method, step, and logic block diagram according to the embodiment of the present disclosure. The general-purpose processor may be a microprocessor or any conventional processor, for example. The steps of the method according to the embodiment of the present disclosure may be combined and embodied directly as execution by a hardware decoding processor or as execution by a combination of hardware and software modules within the decoding processor. The software module can be located in a storage medium, which is located in the first memory 503, and the first processor 502 reads the information in the first memory 503 and combines its hardware to complete the steps of the above method.

[0281] In an exemplary embodiment, network device 500 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field-Programmable Gate Arrays (FPGAs), general-purpose processors, controllers, Micro Controller Units (MCUs), microprocessors, or other electronic elements to perform the methods described above.

[0282] In order to realize the method on the terminal device side according to the embodiment of the present disclosure based on the hardware implementation of the above program modules, the embodiment of the present disclosure further provides a terminal device, as shown in FIG. 6 , the terminal device 600 includes a second communication interface 601 and a second processor 602; The second communication interface 601 can exchange information with other network nodes; The second processor 602 is connected to the second communication interface 601, and is used to realize information interaction with other network nodes, and to implement the methods of one or more technical solutions on the terminal device side when executing a computer program, which is stored in the second memory 603.

[0283] Specifically, the second communication interface 601 is configured to receive an RRC reconfiguration message sent from an MN, and the RRC reconfiguration message includes: At least one or at least one set of secondary node SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

[0284] In one embodiment, the number or cumulative number of SN count values ​​configured for each candidate PSCell and / or each candidate SCG is used to indicate the maximum permitted number of times to return to or access the same candidate PSCell and / or the same candidate SCG.

[0285] In one embodiment, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN is used to indicate the maximum allowed number of times to return to or access the same SN.

[0286] In one embodiment, the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs is used to indicate the maximum allowed number of times selective PSCell and / or SCG activation is performed.

[0287] In one embodiment, at least one or at least one set of SN count values ​​comprise: at least one SN count value; a range of SN count values ​​and one or more increments; One SN count value, one variation range and one or more increments; and indicated by at least one of an SN count value and one or more increments; Here, the increment is the amount of increase in the SN count value.

[0288] In one embodiment, the plurality of increments is: using different increments when the terminal device returns to or accesses the same candidate PSCell or the same candidate SCG in subsequent or two consecutive attempts; The terminal device uses different increments when successively performing selective SCG activation in the next or two consecutive attempts; using different increments when the terminal device accesses the candidate PSCell or candidate SCG in the next or two consecutive attempts, and / or the terminal equipment uses different increments the next time it returns to or accesses the same SN on subsequent or two consecutive attempts.

[0289] In one embodiment, if there is no SN count value available, the second processor 602: Not returning, accessing, or evaluating the candidate PSCell and / or candidate SCG corresponding to the SN count value; not returning, accessing, or evaluating the SN corresponding to the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or all candidate SCGs of the SN corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or SCG; Deleting the configuration of all candidate PSCells and / or all candidate SCGs of the corresponding SN; Not returning to, accessing, or evaluating all candidate PSCells and / or all candidate SCGs; Deleting the configuration of all candidate PSCells and / or all candidate SCGs; and terminating the execution process of selective PSCell and / or SCG activation.

[0290] In one embodiment, the RRC reconfiguration message further includes first information, the first information comprising: Whether the SN count value is recyclable or reusable; The validity period of the SN count value, and The SN count value is configured to indicate at least one of the valid times.

[0291] In one embodiment, the first information corresponds to an SN count value; or One first information corresponds to an SN count value of one candidate PSCell and / or one candidate SCG, or One first information corresponds to the SN count values ​​of all candidate PSCells and / or all candidate SCGs, or One piece of first information corresponds to the SN count value of one SN.

[0292] In one embodiment, the second processor 602 further comprises: Accessing or returning to the same SN; accessing or returning the same candidate PSCell and / or the same candidate SCG; Accessing a candidate PSCell and / or SCG; and determining an SN count value to be used when performing at least one of selective PSCell and / or SCG activation.

[0293] In one embodiment, the second processor 602 further comprises: If one candidate PSCell and / or one candidate SCG has only one SN count value, and the first information indicates that the SN count value can be cyclically used or reused, using the same SN count value each time when returning to or accessing the same candidate PSCell or the same candidate SCG; If all candidate PSCells and / or SCGs of one SN have only one SN count value, and the first information indicates that the SN count value can be cyclically used or reused, using the same SN count value each time when returning to or accessing the same SN; If all candidate PSCells and / or SCGs have only one SN count value and the first information indicates that the SN count values ​​are cyclically or reusable, the device is configured to perform at least one of: using the same SN count value each time when performing selective PSCell or SCG activation; or using the same SN count value each time when accessing a candidate PSCell or SCG.

[0294] In one embodiment, the second processor 602 further comprises: If one candidate PSCell and / or one candidate SCG have different SN count values, sequentially use different SN count values ​​when returning to or accessing the same candidate PSCell or the same candidate SCG from the next time onwards or every time or two consecutive attempts; If all candidate PSCells and / or all candidate SCGs have different SN count values, sequentially use different SN count values ​​when performing selective PSCell or SCG activation in the next or every or two consecutive attempts, or sequentially use different SN count values ​​when accessing a candidate PSCell or candidate SCG in the next or every or two consecutive attempts; and if one SN has a different SN count value, sequentially using the different SN count value when returning to or accessing the same SN from the next time onwards or every time or two consecutive attempts.

[0295] In one embodiment, if the valid time and / or the valid number of times of the SN count value indicated by the first information is exceeded, the second processor 602 further: Deleting the SN count value or not using the SN count value; Not returning, accessing, or evaluating the candidate PSCell and / or candidate SCG corresponding to the SN count value; not returning, accessing, or evaluating the SN corresponding to the SN count value; Not returning, accessing, or evaluating all candidate PSCells and / or all candidate SCGs of the SN corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or the corresponding candidate SCG; Deleting the configuration of all candidate PSCells and / or all candidate SCGs of the corresponding SN; Not returning to, accessing, or evaluating all candidate PSCells and / or all candidate SCGs; Deleting the configuration of all candidate PSCells and / or all candidate SCGs; and terminating the execution process of selective PSCell and / or SCG activation.

[0296] In one embodiment, when one candidate PSCell and / or one candidate SCG has only one SN count value, or one SN has only one SN count value, or all candidate PSCells and / or all candidate SCGs have only one SN count value, the second communication interface 601 is further configured to receive an updated SN count value indicated by the MN when the SN count value expires or when the terminal equipment fails to access the SN using the SN count value.

[0297] In one embodiment, the second processor 602 further comprises: the first SN count value has expired; and a failure to access the first SN using the first SN count value; and the first SN denies access; and if the first SN denies access, the second SN count value is used to access the first SN; The first SN count value and the second SN count value are both SN count values ​​configured for the first SN in the RRC reconfiguration message.

[0298] In one embodiment, the second processor 602 is further configured to store the SN count value in use and to automatically update the SN count value.

[0299] The specific processing steps of the second processor 602 and the second communication interface 601 can be understood by referring to the above method.

[0300] Of course, in actual application, each component in the terminal device 600 is coupled via a bus system 604. It is understood that the bus system 604 is used to realize communication between these components. The bus system 604 includes a power bus, a control bus, and a status signal bus in addition to a data bus. However, for clarity, various buses are referred to as the bus system 604 in FIG. 6.

[0301] The second memory 603 in the embodiments of the present disclosure is used to store various types of data to support the operation of the terminal device 600. Examples of these data include any computer programs for running on the terminal device 600.

[0302] The method according to the embodiment of the present disclosure may be implemented in or by the second processor 602. The second processor 602 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the method may be executed by an integrated logic circuit in hardware or by instructions in software form in the second processor 602. The second processor 602 may be a general-purpose processor, a DSP, or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or the like. The second processor 602 may implement or execute each method, step, and logic block diagram according to the embodiment of the present disclosure. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method according to the embodiment of the present disclosure may be combined and directly embodied as execution by a hardware decoding processor or as execution by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in the second memory 603, and the second processor 602 reads information in the second memory 603 and combines the hardware to complete the steps of the method.

[0303] In an exemplary embodiment, the terminal device 600 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic elements to perform the above methods.

[0304] It should be understood that the memory (first memory 503, second memory 603) of the embodiments of the present disclosure may be volatile or nonvolatile memory, or may include both volatile and nonvolatile memory. Here, nonvolatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disk, or compact disc read-only memory (CD-ROM). Magnetic surface memory may be magnetic disk memory or magnetic tape memory. Volatile memory may be random access memory (RAM) used as an external cache. By way of example and not limitation, many forms of RAM are available.For example, the memory may be a static random access memory (SRAM), a synchronous static random access memory (SSRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), or a direct memory bus random access memory (DRRAM). Memory as described in embodiments of the present disclosure is intended to include, but is not limited to, these and any other suitable types of memory.

[0305] In an exemplary embodiment, the embodiment of the present disclosure further provides a storage medium, which is a computer storage medium, specifically a non-transitory computer-readable storage medium, such as a first memory 503 containing a stored computer program, which can be executed by the first processor 502 of the network device 500 to complete the steps of the master node-side method. Also, for example, a second memory 603 containing a stored computer program, which can be executed by the second processor 602 of the terminal device 600 to complete the steps of the terminal device-side method. The computer-readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM.

[0306] Note that "first," "second," etc. do not necessarily describe any particular order or priority, but rather serve to distinguish between similar objects.

[0307] The term "and / or" herein simply refers to a relationship describing related objects and indicates the presence of a triple relationship, for example, A and / or B can indicate that A exists alone, A and B exist together, and B exists alone. Also, the term "at least one" herein refers to any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, and C can indicate any one or more elements selected from the set consisting of A, B, and C.

[0308] In addition, the technical solutions described in the embodiments of the present disclosure may be arbitrarily combined if they do not conflict with each other.

[0309] The above descriptions are merely preferred embodiments of the present disclosure, and are not intended to limit the protection scope of the present disclosure.

Claims

1. A communication method executed by a master node MN, comprising: sending an RRC reconfiguration message to a terminal device; The RRC reconfiguration message At least one or at least one set of secondary node SN count values ​​configured for each candidate primary secondary cell PSCell and / or each candidate secondary cell group SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

2. The method of claim 1, wherein the number or cumulative number of SN count values ​​configured for each candidate PSCell and / or each candidate SCG is used to indicate the maximum permitted number of times to return to or access the same candidate PSCell and / or the same candidate SCG.

3. The method of claim 1, wherein the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN is used to indicate the maximum permitted number of times to return to or access the same SN.

4. The method of claim 1 , wherein the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs is used to indicate the maximum permitted number of times selective PSCell and / or SCG activation is performed.

5. At least one or at least one set of SN count values ​​are configured as follows: at least one SN count value; a range of SN count values ​​and one or more increments; an SN count value, a variation range, and one or more increments; and indicated by at least one of an SN count value and one or more increments; The method of claim 1 , wherein the increment is an increase in the SN count value.

6. The plurality of increments may be: using different increments when the terminal device returns to or accesses the same candidate PSCell and / or the same candidate SCG in subsequent or two consecutive attempts; using different increments when the terminal device performs selective PSCell and / or SCG activation in the next or two consecutive attempts; using different increments when the terminal device accesses the candidate PSCell and / or the candidate SCG in subsequent or two consecutive attempts; and using different increments when the terminal device returns to or accesses the same SN on subsequent or two consecutive attempts.

7. The RRC reconfiguration message further includes first information, and the first information is Whether the SN count value is recyclable or reusable; The validity period of the SN count value, and 2. The method of claim 1, wherein the signal to noise count value is used to indicate at least one of the valid times of the signal to noise count value.

8. One piece of first information corresponds to one SN count value, or One first information corresponds to an SN count value of one candidate PSCell and / or one candidate SCG, or The first information corresponds to the SN count values ​​of all candidate PSCells and / or all candidate SCGs, or The method according to claim 7 , wherein one piece of first information corresponds to an SN count value of one SN.

9. The method of claim 7, wherein, when the first information indicates that the SN count value can be cyclically used or reused, the SN count value that is uniquely set for one candidate PSCell and / or one candidate SCG is used to indicate that the same SN count value is to be used when the terminal device returns to or accesses the same candidate PSCell and / or the same candidate SCG in the next or subsequent attempts.

10. The method of claim 7, wherein, when the first information indicates that the SN count value can be cyclically used or reused, a unique SN count value set for all candidate PSCells and / or all candidate SCGs of one SN is used to indicate that the terminal equipment will use the same SN count value when returning to or accessing the same SN from the next time onwards or on each attempt.

11. When the first information indicates that the SN count value can be cyclically used or reused, the SN count value that is uniquely set for all candidate PSCells and / or all candidate SCGs is: The terminal device uses the same SN count value when performing selective PSCell and / or SCG activation in the next or every attempt; and using the same SN count value when the terminal device accesses the candidate PSCell and / or the candidate SCG in subsequent or every attempt.

12. A method according to any one of claims 1 to 8, wherein different SN count values ​​of one candidate PSCell and / or one candidate SCG are used to instruct a terminal device to use different SN count values ​​when returning to or accessing the same candidate PSCell and / or the same candidate SCG from the next time onwards or every time or in two consecutive attempts.

13. 9. A method according to any one of claims 1 to 8, wherein different SN count values ​​of all candidate PSCells and / or all candidate SCGs of one SN are used to instruct the terminal device to use different SN count values ​​when returning to or accessing the same SN from the next time onwards or every time or in two consecutive attempts.

14. The different SN count values ​​of all candidate PSCells and / or all candidate SCGs are using different SN count values ​​when the terminal device performs selective PSCell and / or SCG activation from the next time onwards or every time or two consecutive attempts; and using a different SN count value when the terminal device accesses the candidate PSCell and / or the candidate SCG from the next time onwards, or in every attempt, or in two consecutive attempts.

15. If one candidate PSCell and / or one candidate SCG has only one SN count value, or one SN has only one SN count value, or all candidate PSCells and / or all candidate SCGs have only one SN count value, the method may further include:

2. The method of claim 1, further comprising instructing the terminal device of an SN count value to be updated if the SN count value expires or if the terminal device fails to access an SN using the SN count value.

16. 10. The method of claim 1, further comprising storing the SN count value being used and automatically updating the SN count value.

17. 1. A communication method performed by a terminal device, the method comprising: receiving an RRC reconfiguration message sent from the MN; The RRC reconfiguration message At least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

18. The method of claim 17, wherein the number or cumulative number of SN count values ​​configured for each candidate PSCell and / or each candidate SCG is used to indicate the maximum permitted number of times to return to or access the same candidate PSCell and / or the same candidate SCG.

19. 18. The method of claim 17, wherein the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN is used to indicate the maximum permitted number of times to return to or access the same SN.

20. 18. The method of claim 17, wherein the number or cumulative number of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs is used to indicate the maximum permitted number of times selective PSCell and / or SCG activation is performed.

21. At least one or at least one set of SN count values ​​are configured as follows: at least one SN count value; a range of SN count values ​​and one or more increments; an SN count value, a variation range, and one or more increments; and indicated by at least one of an SN count value and one or more increments; 18. The method of claim 17, wherein the increment is an increase in the SN count value.

22. The plurality of increments may be: using different increments when the terminal device returns to or accesses the same candidate PSCell or the same candidate SCG in subsequent or two consecutive attempts; Using different increments when the terminal device subsequently performs selective SCG activation in subsequent attempts or in two consecutive attempts; using different increments when the terminal device accesses the candidate PSCell or candidate SCG in subsequent attempts or in two consecutive attempts; and using different increments when the terminal device returns to or accesses the same SN on subsequent or two consecutive attempts.

23. If no SN count value is available, the method further comprises: Not returning to, accessing, or evaluating the candidate PSCell and / or candidate SCG corresponding to the SN count value; not returning or accessing or evaluating the SN corresponding to the SN count value; Not returning to, accessing, or evaluating all candidate PSCells and / or all candidate SCGs of SNs corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or the corresponding candidate SCG; Deleting the configuration of all candidate PSCells and / or all candidate SCGs of the corresponding SN; Not returning to or accessing or evaluating all candidate PSCells and / or all candidate SCGs; Deleting the configuration of all candidate PSCells and / or all candidate SCGs; and terminating the execution of selective PSCell and / or SCG activation.

24. The RRC reconfiguration message further includes first information, and the first information is Whether the SN count value is recyclable or reusable; The validity period of the SN count value, and 18. The method of claim 17, wherein the method is used to indicate at least one of the valid times of the SN count value.

25. One piece of first information corresponds to one SN count value, or One first information corresponds to an SN count value of one candidate PSCell and / or one candidate SCG, or The first information corresponds to the SN count values ​​of all candidate PSCells and / or all candidate SCGs, or The method of claim 24, wherein one piece of first information corresponds to an SN count value of one SN.

26. Accessing or returning to the same SN; accessing or returning to the same candidate PSCell and / or the same candidate SCG; Accessing a candidate PSCell and / or SCG; 26. The method of any one of claims 17 to 22, 24 to 25, further comprising determining an SN count value to be used when performing at least one of: selective PSCell and / or SCG activation.

27. If one candidate PSCell and / or SCG has only one SN count value and the first information indicates that the SN count value can be cyclically used or reused, using the same SN count value each time when returning to or accessing the same candidate PSCell or the same candidate SCG; If all candidate PSCells and / or SCGs of one SN have only one SN count value, and the first information indicates that the SN count value can be cyclically used or reused, using the same SN count value each time when returning to or accessing the same SN; 25. The method of claim 24, further comprising at least one of: if all candidate PSCells and / or SCGs have only one SN count value and the first information indicates that the SN count values ​​are cyclically or reusable, using the same SN count value each time when performing selective PSCell or SCG activation, or using the same SN count value each time when accessing a candidate PSCell or candidate SCG.

28. If one candidate PSCell and / or one candidate SCG have different SN count values, sequentially use different SN count values ​​when returning to or accessing the same candidate PSCell or the same candidate SCG from the next time onwards or every time or two consecutive attempts; If all candidate PSCells and / or SCGs have different SN count values, sequentially use different SN count values ​​when performing selective PSCell or SCG activation in the next or every or two consecutive attempts, or sequentially use different SN count values ​​when accessing candidate PSCells or candidate SCGs in the next or every or two consecutive attempts; 26. The method of any one of claims 17 to 22, 24 to 25, further comprising at least one of: if one SN has a different SN count value, sequentially using a different SN count value when returning to or accessing the same SN from the next time onwards or every time or two consecutive attempts.

29. If the effective time and / or effective number of times of the SN count value indicated by the first information is exceeded, the method further comprises: Deleting the SN count value or not using the SN count value; Not returning to, accessing, or evaluating the candidate PSCell and / or candidate SCG corresponding to the SN count value; not returning or accessing or evaluating the SN corresponding to the SN count value; Not returning to, accessing, or evaluating all candidate PSCells and / or all candidate SCGs of SNs corresponding to the SN count value; Deleting the configuration of the corresponding candidate PSCell and / or the corresponding candidate SCG; Deleting the configuration of all candidate PSCells and / or all candidate SCGs of the corresponding SN; Not returning to or accessing or evaluating all candidate PSCells and / or all candidate SCGs; Deleting the configuration of all candidate PSCells and / or all candidate SCGs; and terminating the execution of selective PSCell and / or SCG activation.

30. If one candidate PSCell and / or one candidate SCG has only one SN count value, or one SN has only one SN count value, or all candidate PSCells and / or all candidate SCGs have only one SN count value, the method may further include:

18. The method of claim 17, comprising receiving an updated SN Count value indicated by the MN when the SN Count value expires or when the terminal equipment fails to access the SN using the SN Count value.

31. the first SN count value has expired; and a failure to access the first SN using the first SN count value; and denying access to the first SN using the second SN count value if the first SN satisfies at least one of the following:

26. The method of claim 17, wherein the first SN count value and the second SN count value are both SN count values ​​configured for the first SN in the RRC reconfiguration message.

32. 18. The method of claim 17, further comprising storing the SN count value being used and automatically updating the SN count value.

33. A communication device, a first transmitting unit configured to transmit an RRC reconfiguration message to a terminal device; The RRC reconfiguration message At least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

34. A communication device, a first receiving unit configured to receive an RRC reconfiguration message sent from the MN; The RRC reconfiguration message At least one or at least one set of SN count values ​​configured for each candidate PSCell and / or all candidate SCGs; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

35. A network device including a first processor and a first communication interface, The first communication interface is configured to send an RRC reconfiguration message to a terminal device; The RRC reconfiguration message At least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

36. a terminal device including a second processor and a second communication interface, the second communication interface is configured to receive an RRC reconfiguration message sent from a MN; The RRC reconfiguration message At least one or at least one set of SN count values ​​configured for each candidate PSCell and / or each candidate SCG; At least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs for each SN; and at least one or at least one set of SN count values ​​configured for all candidate PSCells and / or all candidate SCGs.

37. 1. A network device including a first processor and a first memory for storing a computer program executable by the first processor, 17. A network device, wherein the first processor, when executing the computer program, performs the steps of the method of any one of claims 1 to 16.

38. A terminal device including a second processor and a second memory for storing a computer program executable by the second processor, 33. A terminal device, wherein the second processor, when executing the computer program, performs the steps of the method of any one of claims 17 to 32.

39. 33. A computer-readable storage medium having stored thereon a computer program, the computer program being adapted to implement the steps of the method of any one of claims 1 to 16 or to implement the steps of the method of any one of claims 17 to 32 when executed by a processor.

40. 33. A computer program product comprising instructions which, when executed by a processor, cause the processor to perform the steps of the method of any one of claims 1 to 16 or to implement the steps of the method of any one of claims 17 to 32.

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