Methods and apparatuses of a mobility robustness optimization (MRO) mechanism for a subsequent conditional primary secondary cell group cell (pscell) addition or change (CPAC) procedure
The MRO mechanism addresses the challenge of configuring trigger conditions for CPAC procedures in wireless communication systems by using network nodes to set T310, T312, and T304 thresholds, thereby enhancing mobility robustness and procedure efficiency.
Patent Information
- Application Number
- PCT/CN2024/105156
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-30
AI Technical Summary
Current wireless communication systems face challenges in configuring and managing trigger conditions for successful reports during subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedures, especially in multi-node scenarios.
The proposed mobility robustness optimization (MRO) mechanism involves configuring trigger conditions, such as T310, T312, and T304 related thresholds, by network nodes for both initial and subsequent phases of CPAC procedures, ensuring seamless communication and handover processes.
This solution enhances the robustness of mobility management in wireless communication systems by optimizing trigger conditions, improving the reliability and efficiency of PSCell addition or change procedures, even in complex network scenarios.
Smart Images

Figure CN2024105156_30052025_PF_FP_ABST
Abstract
Description
METHODS AND APPARATUSES OF A MOBILITY ROBUSTNESS OPTIMIZATION (MRO) MECHANISM FOR A SUBSEQUENT CONDITIONAL PRIMARY SECONDARY CELL GROUP CELL (PSCELL) ADDITION OR CHANGE (CPAC) PROCEDURETECHNICAL FIELD
[0001] The present disclosure relates to wireless communications, and more specifically to methods and apparatuses of a mobility robustness optimization (MRO) mechanism for a subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure.BACKGROUND
[0002] A wireless communications system may include one or multiple network communication devices, such as base stations, which may support wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE) , or other suitable terminology. The wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g. time-domain resources (e.g. symbols, slots, subframes, frames, or the like) or frequency-domain resources (e.g. subcarriers, carriers, or the like) . Additionally, the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g. sixth generation (6G) ) .SUMMARY
[0003] An article "a" before an element is unrestricted and understood to refer to "at least one" of those elements or "one or more" of those elements. The terms "a, " "at least one, " "one or more, " and "at least one of one or more" may be interchangeable. As used herein, including in the claims, "or" as used in a list of items (e.g. a list of items prefaced by a phrase such as "at least one of" or "one or more of" or "one or both of" ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e. A and B and C) . Also, as used herein, the phrase "based on" shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as "based on condition A" may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" shall be construed in the same manner as the phrase "based at least in part on. Further, as used herein, including in the claims, a "set" may include one or more elements.
[0004] Some implementations of the present disclosure provide a user equipment (UE) for wireless communication. The UE includes at least one memory; and at least one processor coupled to the at least one memory and configured to cause the UE to: receive a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one first trigger condition is decided by a first network node; and store the first configuration set.
[0005] In some implementations of the UE described herein, the first network node is: a master node (MN) ; a source secondary node (SN) of the initial CPAC phase; or a target SN of the initial CPAC phase.
[0006] In some implementations of the UE described herein, the first configuration further includes at least one second trigger condition of the first successful report for at least one subsequent conditional PSCell change (CPC) phase following the initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one second trigger condition is decided by: the first network node; or a source secondary node (SN) of anyone of the at least one subsequent CPC phase.
[0007] In some implementations of the UE described herein, if the at least one second trigger condition is decided by the first network node, the at least one processor is configured to cause the UE to receive one of the following: first information indicating that the at least one second trigger condition for each of the at least one subsequent CPC phase is same, and one second trigger condition for the at least one subsequent CPC phase; or two or more second trigger conditions for the at least one subsequent CPC phase, if the at least one second trigger condition for each of the at least one subsequent CPC phase is not same.
[0008] In some implementations of the UE described herein, the first configuration set further includes at least one third trigger condition of the first successful report for at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one third trigger condition is decided by a target SN of anyone of the at least one subsequent CPC phase.
[0009] In some implementations of the UE described herein, the at least one processor is configured to cause the UE to receive one of the following: second information indicating that the at least one third trigger condition for each of the at least one subsequent CPC phase is same, and one third trigger condition for the at least one subsequent CPC phase; or two or more third trigger conditions for the at least one subsequent CPC phase, if the at least one third trigger condition for each of the at least one subsequent CPC phase is not same.
[0010] In some implementations of the UE described herein, at least one of the following is received by the UE from a master node (MN) or from a secondary node (SN) : the at least one first trigger condition, the at least one second trigger condition, the at least one third trigger condition, the first information, the one second trigger condition, the two or more second trigger conditions, the second information, the one third trigger condition, or the two or more third trigger conditions.
[0011] In some implementations of the UE described herein, the at least one first trigger condition includes at least one of the following: one T310 related trigger threshold for the initial CPAC phase of the first subsequent CPAC procedure; one T312 related trigger threshold for the initial CPAC phase of the first subsequent CPAC procedure; or at least one T304 related trigger threshold for the initial CPAC phase of the first subsequent CPAC procedure; wherein the at least one second trigger condition includes at least one of the following: at least one T310 related trigger threshold for the at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure; or at least one T312 related trigger threshold for the at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure; and wherein the at least one third trigger condition includes at least one T304 related trigger threshold for the at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure.
[0012] In some implementations of the UE described herein, the at least one processor is configured to cause the UE to: monitor the first configuration set; evaluate whether one or more trigger conditions within the first configuration set are satisfied; and generate the first successful report in response to satisfaction of the one or more trigger conditions within the first configuration set.
[0013] In some implementations of the UE described herein, the at least one processor is configured to cause the UE to: receive a second configuration set for a second subsequent CPAC procedure, wherein the second subsequent CPAC procedure is initiated by a second network node, wherein the first network node is one of a master node (MN) or a secondary node (SN) , wherein the second network node is another one of the MN or the SN, and wherein the second configuration set includes one or more trigger conditions of a second successful report for the second subsequent CPAC procedure; and store the second configuration set.
[0014] In some implementations of the UE described herein, a third subsequent CPAC procedure to be executed by the UE is the first subsequent CPAC procedure or the second subsequent CPAC procedure, and wherein if the third subsequent CPAC procedure is initiated by the MN or if the third subsequent CPAC procedure is not initiated by the SN or if an execution condition of an initial CPAC phase of the third subsequent CPAC procedure is configured by the MN and is fulfilled, the at least one processor is configured to cause the UE to: monitor a set of configurations associated with one or more trigger conditions of successful report for the initial CPAC phase of the third subsequent CPAC procedure that is configured by the MN; monitor a set of configurations associated with one or more trigger conditions of successful report for at least one subsequent CPC phase of the third subsequent CPAC procedure that is configured by a source SN of anyone of the at least one subsequent CPC phase of the third subsequent CPAC procedure; or monitor a set of configurations associated with one or more trigger conditions of successful report for the at least one subsequent CPC phase of the third subsequent CPAC procedure that is configured by the MN.
[0015] In some implementations of the UE described herein, a third subsequent CPAC procedure to be executed by the UE is the first subsequent CPAC procedure or the second subsequent CPAC procedure, and wherein if the third subsequent CPAC procedure is initiated by the SN or if the third subsequent CPAC procedure is not initiated by the MN or if an execution condition of an initial CPAC phase of the third subsequent CPAC procedure is configured by the SN and is fulfilled, the at least one processor is configured to cause the UE to: monitor a set of configurations associated with one or more trigger conditions of successful report for the initial CPAC phase of the third subsequent CPAC procedure that is configured by the SN, wherein the SN is a source SN of the initial CPAC phase of the third subsequent CPAC procedure; monitor a set of configurations associated with one or more trigger conditions of successful report for at least one subsequent CPC phase of the third subsequent CPAC procedure that is configured by a source SN of anyone of the at least one subsequent CPC phase of the third subsequent CPAC procedure; or monitor a set of configurations associated with one or more trigger conditions of successful report for the at least one subsequent CPC phase of the third subsequent CPAC procedure that is configured by the source SN of the initial CPAC phase of the third subsequent CPAC procedure.
[0016] In some implementations of the UE described herein, the at least one processor is configured to cause the UE to receive at least one of the following: third information indicating that the third subsequent CPAC procedure is initiated by the MN; fourth information indicating that the third subsequent CPAC procedure is not initiated by the MN; fifth information indicating that the third subsequent CPAC procedure is initiated by the SN; or sixth information indicating that the third subsequent CPAC procedure is not initiated by the SN.
[0017] In some implementations of the UE described herein, the at least one processor is configured to cause the UE to: determine that the third subsequent CPAC procedure is initiated by the MN or the third subsequent CPAC procedure is not initiated by the SN: upon receiving the third information; upon receiving the sixth information; not receiving the fourth information; or not receiving the fifth information, or determine that the third subsequent CPAC procedure is initiated by the SN or the third subsequent CPAC procedure is not initiated by the MN: upon receiving the fourth information; upon receiving the fifth information; not receiving the third information; or not receiving the sixth information.
[0018] In some implementations of the UE described herein, the at least one processor is configured to cause the UE to: generate a third successful report of the third subsequent CPAC procedure in response to satisfaction of one or more trigger conditions within the set of configurations associated with the one or more trigger conditions monitored by the UE, wherein the third successful report includes at least one of the first successful report or the second successful report; and wherein the third successful report includes at least one of the following: the third information; the fourth information; the fifth information; or the sixth information; and transmit the third successful report.
[0019] In some implementations of the UE described herein, the at least one processor is configured to cause the UE to: receive a third configuration set for a PSCell addition or change (PAC) procedure or a CPAC procedure, wherein the PAC procedure or the CPAC procedure is initiated by a third network node, wherein each of the first network node and the third network node is one of a master node (MN) or a secondary node (SN) , and wherein the third configuration set includes one or more trigger conditions of a successful primary secondary cell (PSCell) addition or change report (SPR) for the PAC procedure or the CPAC procedure; and store the third configuration set.
[0020] In some implementations of the UE described herein, the at least one processor is configured to cause the UE to: monitor the third configuration set for the PAC procedure, if the PAC procedure is executed at the UE; monitor the third configuration set for the CPAC procedure, if the CPAC procedure is executed at the UE; or monitor the first configuration set for the first subsequent CPAC procedure, if the first subsequent CPAC procedure is executed at the UE.
[0021] In some implementations of the UE described herein, if the first successful report is a first SPR, the at least one processor is configured to cause the UE to receive seventh information indicating that one or more SPR configurations received by the UE is configured for which one of the first subsequent CPAC procedure or the PAC procedure or the CPAC procedure, wherein the one or more SPR configurations include at least one of the first configuration set or the third configuration set.
[0022] In some implementations of the UE described herein, the at least one processor is configured to cause the UE to transmit at least one of the following: a SPR; and eighth information indicating that the SPR is generated for at least one of the following: the first subsequent CPAC procedure; the PAC procedure; or the CPAC procedure.
[0023] In some implementations of the UE described herein, the eighth information includes at least one of the following: a cause value for generating the SPR; an explicit indication indicating for which procedure the SPR is generated; an implicit indication indicating for which procedure the SPR is generated; or an availability indication indicating for which procedure the SPR is available.
[0024] Some implementations of the present disclosure provide a processor for wireless communication, comprising at least one controller coupled with at least one memory and configured to cause the processor to: receive a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one first trigger condition is decided by a first network node; and store the first configuration set.
[0025] Some implementations of the present disclosure provide a method performed by a user equipment (UE) for wireless communication. The method includes: receiving a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one first trigger condition is decided by a first network node; and storing the first configuration set.
[0026] Some implementations of the present disclosure provide a unit of a master node (MN) . The unit includes at least one memory; and at least one processor coupled to the at least one memory and configured to cause the MN to: obtain a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one first trigger condition is decided by a first network node; and transmit the first configuration set to a user equipment (UE) .
[0027] In some implementations of the MN described herein, the at least one processor is configured to cause the MN to: generate the first configuration set; or receive the first configuration set from a secondary node (SN) .
[0028] In some implementations of the MN described herein, the first configuration set further includes at least one second trigger condition of the first successful report for at least one subsequent conditional PSCell change (CPC) phase following the initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one second trigger condition is decided by: the first network node; or a source secondary node (SN) of anyone of the at least one subsequent CPC phase.
[0029] In some implementations of the MN described herein, the at least one processor is configured to cause the MN to transmit one of the following to the UE: first information indicating that the at least one second trigger condition for each of the at least one subsequent CPC phase is same, and one second trigger condition for the at least one subsequent CPC phase; or two or more second trigger conditions for the at least one subsequent CPC phase, if the at least one second trigger condition for each of the at least one subsequent CPC phase is not same.
[0030] In some implementations of the MN described herein, the first configuration set further includes at least one third trigger condition of the first successful report for at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one third trigger condition is decided by a target SN of anyone of the at least one subsequent CPC phase.
[0031] In some implementations of the MN described herein, the at least one processor is configured to cause the MN to transmit one of the following to the UE: second information indicating that the at least one third trigger condition for each of the at least one subsequent CPC phase is same, and one third trigger condition for the at least one subsequent CPC phase; or two or more third trigger conditions for the at least one subsequent CPC phase, if the at least one third trigger condition for each of the at least one subsequent CPC phase is not same.
[0032] In some implementations of the MN described herein, the at least one processor is configured to cause the MN to generate at least one of the following or receive at least one of the following from a secondary node (SN) : the at least one first trigger condition, the at least one second trigger condition, the at least one third trigger condition, the first information, the one second trigger condition, the two or more second trigger conditions, the second information, the one third trigger condition, or the two or more third trigger conditions.
[0033] In some implementations of the MN described herein, the at least one first trigger condition includes at least one of the following: one T310 related trigger threshold for the initial CPAC phase of the first subsequent CPAC procedure; one T312 related trigger threshold for the initial CPAC phase of the first subsequent CPAC procedure; or at least one T304 related trigger threshold for the initial CPAC phase of the first subsequent CPAC procedure; wherein the at least one second trigger condition includes at least one of the following: at least one T310 related trigger threshold for the at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure; or at least one T312 related trigger threshold for the at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure; and wherein the at least one third trigger condition includes at least one T304 related trigger threshold for the at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure.
[0034] In some implementations of the MN described herein, the at least one processor is configured to cause the MN to transmit, to the UE, a second configuration set for a second subsequent CPAC procedure, wherein the second subsequent CPAC procedure is initiated by a second network node, wherein the first network node is one of the MN or a secondary node (SN) , wherein the second network node is another one of the MN or the SN, and wherein the second configuration set includes one or more trigger conditions of a second successful report for the second subsequent CPAC procedure.
[0035] In some implementations of the MN described herein, a third subsequent CPAC procedure to be executed by the UE is the first subsequent CPAC procedure or the second subsequent CPAC procedure, and wherein the at least one processor is configured to cause the MN to transmit at least one of the following to the UE: third information indicating that the third subsequent CPAC procedure is initiated by the MN; fourth information indicating that the third subsequent CPAC procedure is not initiated by the MN; fifth information indicating that the third subsequent CPAC procedure is initiated by the SN; or sixth information indicating that the third subsequent CPAC procedure is not initiated by the SN.
[0036] In some implementations of the MN described herein, the at least one processor is configured to cause the MN to receive a third successful report including at least one of the following: the third information; the fourth information; the fifth information; or the sixth information, and wherein the third successful report includes at least one of the first successful report or the second successful report.
[0037] In some implementations of the MN described herein, the at least one processor is configured to cause the MN to: transmit, to the UE, a third configuration set for a PSCell addition or change (PAC) procedure or a CPAC procedure, wherein the PAC procedure or the CPAC procedure is initiated by a fifth network node, wherein the fifth network node is the MN or the SN, and wherein the third configuration set includes one or more trigger conditions of a successful primary secondary cell (PSCell) addition or change report (SPR) for the PAC procedure or the CPAC procedure.
[0038] In some implementations of the MN described herein, the at least one processor is configured to cause the MN to transmit seventh information indicating that one or more SPR configurations transmitted to the UE is configured for which one of the first subsequent CPAC procedure or the PAC procedure or the CPAC procedure, wherein the one or more SPR configurations include at least one of the first configuration set or the third configuration set.
[0039] In some implementations of the MN described herein, the at least one processor is configured to cause the MN to receive at least one of the following from the UE: a SPR; and eighth information indicating that the SPR is generated for at least one of the following: the first subsequent CPAC procedure; the PAC procedure; or the CPAC procedure.
[0040] In some implementations of the MN described herein, the eighth information includes at least one of the following: a cause value for generating the SPR; an explicit indication indicating for which procedure the SPR is generated; an implicit indication indicating for which procedure the SPR is generated; or an availability indication indicating for which procedure the SPR is available.
[0041] In some implementations of the MN described herein, the at least one processor is configured to cause the MN to identify, based on the eighth information or stored UE context information, the SPR is generated for one of the following: the first subsequent CPAC procedure; the PAC procedure; or the CPAC procedure.
[0042] Some implementations of the present disclosure provide a processor for wireless communication, comprising at least one controller coupled with at least one memory and configured to cause the processor to: obtain a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one first trigger condition is decided by a first network node; and transmit the first configuration set to a user equipment (UE) .
[0043] Some implementations of the present disclosure provide a method performed by a master node (MN) . The method includes: obtaining a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one first trigger condition is decided by a first network node; and transmitting the first configuration set to a user equipment (UE) .
[0044] Some implementations of the present disclosure provide a secondary node (SN) . The UE includes at least one memory; and at least one processor coupled to the at least one memory and configured to cause the SN to: generate a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure; and transmit the first configuration set.
[0045] In some implementations of the SN described herein, the at least one first trigger condition is decided by the SN, and wherein the SN is a source SN of the initial CPAC phase or a target SN of the initial CPAC phase.
[0046] In some implementations of the SN described herein, the first configuration set further includes at least one second trigger condition of the first successful report for at least one subsequent conditional PSCell change (CPC) phase following the initial CPAC phase of the first subsequent CPAC procedure, wherein the at least one second trigger condition is decided by the SN, and wherein the SN is a source SN of anyone of the at least one subsequent CPC phase.
[0047] In some implementations of the SN described herein, the at least one processor is configured to cause the SN to transmit one of the following: first information indicating that the at least one second trigger condition for each of the at least one subsequent CPC phase is same, and one second trigger condition for the at least one subsequent CPC phase; or two or more second trigger conditions for the at least one subsequent CPC phase, if the at least one second trigger condition for each of the at least one subsequent CPC phase is not same.
[0048] In some implementations of the SN described herein, the first configuration set further includes at least one third trigger condition of the first successful report for at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure, wherein the at least one third trigger condition is decided by the SN, and wherein the SN is a target SN of anyone of the at least one subsequent CPC phase.
[0049] In some implementations of the SN described herein, the at least one processor is configured to cause the SN to transmit one of the following : second information indicating that the at least one third trigger condition for each of the at least one subsequent CPC phase is same, and one third trigger condition for the at least one subsequent CPC phase; or two or more third trigger conditions for the at least one subsequent CPC phase, if the at least one third trigger condition for each of the at least one subsequent CPC phase is not same.
[0050] In some implementations of the SN described herein, the at least one first trigger condition includes at least one of the following: one T310 related trigger threshold for the initial CPAC phase of the first subsequent CPAC procedure; one T312 related trigger threshold for the initial CPAC phase of the first subsequent CPAC procedure; or at least one T304 related trigger threshold for the initial CPAC phase of the first subsequent CPAC procedure; wherein the at least one second trigger condition includes at least one of the following: at least one T310 related trigger threshold for the at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure; or at least one T312 related trigger threshold for the at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure; and wherein the at least one third trigger condition includes at least one T304 related trigger threshold for the at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure.
[0051] In some implementations of the SN described herein, the at least one processor is configured to cause the SN to transmit a second configuration set for a second subsequent CPAC procedure, wherein the first subsequent CPAC procedure is initiated by a first network node, wherein the second subsequent CPAC procedure is initiated by a second network node, wherein the first network node is one of a master node (MN) or the SN, wherein the second network node is another one of the MN or the SN, and wherein the second configuration set includes one or more trigger conditions of a second successful report for the second subsequent CPAC procedure.
[0052] In some implementations of the SN described herein, a third subsequent CPAC procedure to be executed by the UE is the first subsequent CPAC procedure or the second subsequent CPAC procedure, and wherein the at least one processor is configured to cause the SN to transmit at least one of the following: third information indicating that the third subsequent CPAC procedure is not initiated by the MN; fourth information indicating that the third subsequent CPAC procedure is not initiated by the MN; fifth information indicating that the third subsequent CPAC procedure is initiated by the SN; or sixth information indicating that the third subsequent CPAC procedure is not initiated by the SN.
[0053] In some implementations of the SN described herein, the at least one processor is configured to cause the SN to receive a third successful report including at least one of the following: the third information; the fourth information; the fifth information; or the sixth information, and wherein the third successful report includes at least one of the first successful report or the second successful report.
[0054] In some implementations of the SN described herein, the at least one processor is configured to cause the SN to: transmit a third configuration set for a PSCell addition or change (PAC) procedure or a CPAC procedure, wherein the PAC procedure or the CPAC procedure is initiated by the SN, and wherein the third configuration set includes one or more trigger conditions of a successful primary secondary cell (PSCell) addition or change report (SPR) for the PAC procedure or the CPAC procedure.
[0055] In some implementations of the SN described herein, the at least one processor is configured to cause the SN to: transmit, seventh information indicating that one or more SPR configurations transmitted to a user equipment (UE) is configured for which one of the first subsequent CPAC procedure or the PAC procedure or the CPAC procedure, wherein the one or more SPR configurations include at least one of the first configuration set or the third configuration set.
[0056] In some implementations of the SN described herein, the at least one processor is configured to cause the SN to receive at least one of the following: a SPR; and eighth information indicating that the SPR is generated for at least one of the following: the first subsequent CPAC procedure; the PAC procedure; or the CPAC procedure.
[0057] In some implementations of the SN described herein, the eighth information includes at least one of the following: a cause value for generating the SPR; an explicit indication indicating for which procedure the SPR is generated; an implicit indication indicating for which procedure the SPR is generated; or an availability indication indicating for which procedure the SPR is available.
[0058] In some implementations of the SN described herein, the at least one processor is configured to cause the SN to identify, based on the eighth information or stored UE context information, the SPR is generated for one of the following: the first subsequent CPAC procedure; the PAC procedure; or the CPAC procedure.
[0059] Some implementations of the present disclosure provide a processor for wireless communication, comprising at least one controller coupled with at least one memory and configured to cause the processor to: generate a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure; and transmit the first configuration set.
[0060] Some implementations of the present disclosure provide a method performed by a user equipment (UE) for wireless communication. The method includes: generating a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure; and transmitting the first configuration set.BRIEF DESCRIPTION OF THE DRAWINGS
[0061] Figure 1 illustrates an example of a wireless communications system in accordance with aspects of the present disclosure.
[0062] Figure 2 illustrates an example of a user equipment (UE) 200 in accordance with aspects of the present disclosure.
[0063] Figure 3 illustrates an example of a processor 300 in accordance with aspects of the present disclosure.
[0064] Figure 4 illustrates an example of a network equipment (NE) 400 in accordance with aspects of the present disclosure.
[0065] Figures 5-7 illustrate flowcharts of methods related to a subsequent CPAC procedure in accordance with some aspects of the present disclosure.DETAILED DESCRIPTION
[0066] Next generation radio access network (NG-RAN) supports a multi-radio dual connectivity (MR-DC) operation. In a MR-DC scenario, a user equipment (UE) with multiple transceivers may be configured to utilize resources provided by two different nodes connected via non-ideal backhauls. One node may provide new radio (NR) access and the other one node may provide either evolved-universal terrestrial radio access (UTRA) (E-UTRA) or NR access. One node may act as a master node (MN) and the other node may act as a secondary node (SN) . The MN and SN are connected via a network interface (for example, X2 or Xn interface as specified in 3rd Generation Partnership Project (3GPP) standard documents) , and at least the MN is connected to the core network. MR-DC includes NR-NR DC, EN-DC, NGEN-DC, and / or NE-DC. A MN can be an eNB, a ng-eNB, or a gNB. A SN can be a ng-eNB, an en-gNB, or a gNB.
[0067] In 3GPP Rel-18, subsequent CPAC was introduced, to enhance PSCell mobility in case of NR-DC. Subsequent CPAC may be performed in any MR-DC cases, which includes NR-NR DC, EN-DC, NGEN-DC, and / or NE-DC. In general, during a subsequent CPAC procedure, after receiving configuration for the subsequent CPAC procedure, a UE may perform several CPAC executions (including initial CPAC execution (e.g. initial CPA execution or initial CPC execution) and one or more subsequent CPC executions) . A Subsequent CPAC is defined as a conditional PSCell addition or change procedure that is executed after a PSCell addition, a PSCell change or a secondary cell group (SCG) release based on pre-configured subsequent CPAC configuration of candidate PSCell (s) without reconfiguration and re-initiation of CPC / CPA. A UE keeps the configured subsequent CPAC configuration and evaluates the execution conditions of candidate PSCells after completion of a PSCell addition or a PSCell change. The subsequent CPAC procedure may consist of one initial CPAC phase and at least one subsequent CPC phase. In an initial CPAC phase of the subsequent CPAC procedure, the UE performs an initial CPAC execution (e.g. initial CPA execution or initial CPC execution) . In a subsequent CPC phase of the subsequent CPAC procedure, wherein the subsequent CPC phase is a phase following the initial CPAC phase, the UE performs a subsequent CPC execution. Intra-SN subsequent CPAC, or inter-SN subsequent CPAC initiated either by a MN or a SN are supported.
[0068] The following principles apply to subsequent CPAC:
[0069] - For a MN initiated subsequent CPAC, the MN initially triggers the candidate cell preparation of subsequent CPAC procedure and generates the execution conditions for CPA execution and initial CPC execution.
[0070] - For a SN initiated subsequent CPAC, the source SN initially triggers the candidate cell preparation of subsequent CPAC procedure and generates the execution conditions for initial CPC execution.
[0071] - For both MN and SN initiated subsequent CPAC, the candidate SN generates the execution conditions for the following execution of the subsequent CPAC when the candidate SN prepares the candidate SCG configuration (s) for candidate PSCell (s) .
[0072] - The subsequent CPAC configuration contains the configuration of candidate PSCell (s) , execution conditions for both the initial CPAC execution and the following subsequent CPAC execution, and may contain the MCG configuration (to be applied when CPAC execution is triggered) , the reference configuration and the security update configuration.
[0073] - The subsequent CPAC configuration for CPA or inter-SN CPC candidate PSCell (s) is provided in MN format. The subsequent CPAC configuration for intra-SN CPC candidate PSCell (s) is provided in MN format or SN format.
[0074] - For one UE, the subsequent CPAC configuration for all CPC candidate PSCells (including inter-SN and / or intra-SN) is provided in the same format, i.e., the MN format, or the SN format. If the configured CPC candidate PSCell (s) includes at least one inter-SN CPC candidate PSCell, the subsequent CPAC configuration can only be provided in MN format. If only intra-SN CPC candidate PSCell (s) is configured, the subsequent CPAC configuration can be provided in either MN format or SN format.
[0075] - Each candidate PSCell configuration can be provided as delta configuration on top of a reference configuration, which is used to form a complete candidate cell configuration. Only one reference configuration is supported.
[0076] - The MN generates the MCG part of the reference configuration (if any) , while the SN (source or candidate) generates the SCG part of the reference configuration. The MN can request an SCG reference configuration from any one of the involved SNs.
[0077] - The network explicitly configures a subsequent CPAC configuration for the current serving PSCell if the network wants to use that PSCell as a candidate PSCell for subsequent CPAC.
[0078] - The network always explicitly releases the subsequent CPAC configuration for candidate PSCells after an inter-MN PCell change.
[0079] - Upon the release of SCG, the UE releases the stored subsequent CPAC configuration in SN format.
[0080] - A candidate PSCell configuration for CPA can be used for the subsequent CPC execution, but with different execution conditions of the candidate PSCell.
[0081] - The subsequent CPAC configuration with CPA execution condition (s) maintained after SCG release can be used for the subsequent CPA execution.
[0082] A MN initiated subsequent CPAC is a subsequent CPAC procedure initiated by a MN for inter-SN subsequent CPAC configuration and inter-SN CPC execution. In particular, following steps 1-25 may be performed in a MN initiated subsequent CPAC.
[0083] In steps 1, 2, 3 and 4, a MN initiates the inter-SN subsequent CPAC by requesting the candidate SN (s) to allocate resources for the UE by means of the SN Addition procedure, indicating that the request is for subsequent CPAC. The MN also provides the candidate cells recommended by MN via the latest measurement results for the candidate SN (s) to choose and configure the SCG cell (s) , provides the lists of candidate PSCells proposed to other candidate SN (s) and provides the upper limit for the number of PSCells that can be prepared by the candidate SN. Within the list of cells as indicated within the measurement results indicated by the MN, the candidate SN decides the list of PSCell (s) to prepare (considering the maximum number indicated by the MN) and, for each prepared PSCell, the candidate SN decides other SCG SCells and provides the new corresponding SCG radio resource configuration to the MN in an NR RRC Reconfiguration message contained in the SN Addition Request Acknowledge message with the prepared PSCell ID (s) . For each prepared PSCell, the candidate SN also decides the execution conditions for the following execution of the subsequent CPAC within the lists of candidate PSCells proposed to other candidate SN (s) . If data forwarding is needed, the candidate SN provides data forwarding addresses to the MN. The candidate SN may also propose data forwarding to the MN or other candidate SN (s) for subsequent CPAC. The candidate SN includes the indication of the full or delta RRC configuration. The candidate SN can either accept or reject each of the candidate cells listed within the measurement results indicated by the MN, i.e. it cannot configure any alternative candidates. The MN may select one of the candidate SN(s) and requests providing the reference configuration as part of the SN Addition procedure. Once obtained, the MN provides the reference configuration to other candidate SN (s) .
[0084] In step 5, for SN terminated bearers using MCG resources, the MN provides Xn-U DL TNL address information in the Xn-U Address Indication message to the candidate SN (s) .
[0085] In steps 6 and 7, if the lists of prepared PSCells received from the candidate SN (s) in steps 2 and 4 are different than the lists of proposed PSCells, the MN initiates the SN Modification procedures towards all candidate SN (s) to inform them about the updated lists of prepared PSCells in other candidate SN (s) .
[0086] In step 8, the MN sends to the UE an RRC Reconfiguration message including the subsequent CPAC configuration, i.e. a list of RRC Reconfiguration messages and associated execution conditions for the subsequent CPAC, in which each RRC Reconfiguration message contains the SCG configuration in the RRC Reconfiguration message received from one of the candidate SN (s) in steps 2 and 4, and possibly an MCG configuration. Besides, the RRC Reconfiguration message can also include an updated MCG configuration, e.g., to configure the required conditional measurements.
[0087] In step 9, the UE applies the RRC Reconfiguration message received in step 3, stores the subsequent CPAC configuration and replies to the MN with an RRC Reconfiguration Complete message. In case the UE is unable to comply with (part of) the configuration included in the RRC Reconfiguration message, it performs the reconfiguration failure procedure.
[0088] In step 10, the UE starts evaluating the execution conditions. If the execution condition of one candidate PSCell is satisfied, the UE applies RRC Reconfiguration message corresponding to the selected candidate PSCell, and sends an MN RRC Reconfiguration Complete message, including an RRC Reconfiguration Complete message for the selected candidate PSCell, and information enabling the MN to identify the SN of the selected candidate PSCell. The RRC Reconfiguration Complete message may also include the sk-Counter value associated with the selected candidate PSCell if a new sk-Counter is selected.
[0089] In step 11, the MN informs the SN of the selected candidate PSCell that the UE has completed the reconfiguration procedure successfully via SN Reconfiguration Complete message, including the RRC Reconfiguration Complete message.
[0090] In step 12, The UE performs synchronisation towards the PSCell indicated in the RRC Reconfiguration message applied in step 11. The order the UE sends the MN RRC Reconfiguration Complete message and performs the Random Access procedure towards the SCG is not defined. The successful RA procedure towards the SCG is not required for a successful completion of the RRC Connection Reconfiguration procedure.
[0091] In step 13, if PDCP termination point is changed to the SN for bearers using RLC AM, and when RRC full configuration is not used, the MN sends the SN Status Transfer message.
[0092] In step 14, for SN terminated bearers or QoS flows moved from the MN, dependent on the characteristics of the respective bearer or QoS flow, the MN may take actions to minimise service interruption due to activation of MR-DC (Data forwarding) .
[0093] In step 15, if data forwarding is needed, the MN may send the Xn-U Address Indication message to the selected candidate SN. The SN may decide to perform, if applicable, early data forwarding for SN-terminated bearers, together with the sending of an Early Status Transfer message to the source MN.
[0094] In step 16, the UE starts evaluating the execution conditions. If the execution condition of one candidate PSCell is satisfied, the UE applies RRC Reconfiguration message corresponding to the selected candidate PSCell, and sends an MN RRC Reconfiguration Complete message, including an RRC Reconfiguration Complete message for the selected candidate PSCell, and information enabling the MN to identify the SN of the selected candidate PSCell. The RRC Reconfiguration Complete message may also include a sk-Counter value associated with the selected candidate PSCell if a new sk-Counter is selected.
[0095] In step 17, the MN informs the SN of the selected candidate PSCell that the UE has completed the reconfiguration procedure successfully via SN Reconfiguration Complete message, including the RRC Reconfiguration Complete message.
[0096] In step 18, The UE performs synchronisation towards the PSCell indicated in the RRC Reconfiguration message applied in step 17. The order the UE sends the MN RRC Reconfiguration Complete message and performs the Random Access procedure towards the SCG is not defined. The successful RA procedure towards the SCG is not required for a successful completion of the RRC Connection Reconfiguration procedure.
[0097] In steps 19, 20 and 21, the MN triggers the MN initiated SN Modification procedure to inform the last serving SN to stop providing user data to the UE, to switch to the prepared state, and if applicable, to allow provisioning of new data forwarding addresses. If applicable, the MN triggers the Xn-U Address Indication procedure to inform the last serving SN the address of the SN of the selected candidate PSCell, to start late data forwarding.
[0098] In steps 22 and 23, if PDCP termination point is changed for bearers using RLC AM, and when RRC full configuration is not used, the SN sends the SN Status Transfer message to MN, which the MN sends then to the SN of the selected candidate PSCell, if needed.
[0099] In step 24, if applicable, data forwarding from the last serving SN takes place. It may be initiated as early as the last serving SN receives the early data forwarding address.
[0100] In step 25, if data forwarding is needed, the MN may send the Xn-U Address Indication message to the selected candidate SN. The SN may decide to perform, if applicable, early data forwarding for SN-terminated bearers, together with the sending of an Early Status Transfer message to the source MN.
[0101] A SN initiated subsequent CPAC is a subsequent CPAC procedure initiated by a SN for inter-SN subsequent CPAC configuration and inter-SN CPC execution. The procedure is initiated with SN Change Required procedure, which is then followed with the steps for the MN-initiated subsequent CPAC.
[0102] In 3GPP Rel-18, Successful PSCell addition or change Report (e.g. SPR) would be introduced, to optimize PSCell change or PSCell addition or CPC or CPA related parameters, e.g. if a physical layer issue is detected by a UE during an ongoing PSCell change or PSCell addition or CPC or CPA procedure. For the SPR, configurations for the UE to log or store or generate SPR is configured by the network, e.g. SPR-Config information element (IE) is configured via the RRC reconfiguration message to the UE, including at least one trigger condition, e.g. T304 related trigger threshold (athreshold e.g. thresholdPercentageT304 generated by target PSCell or target SN, and the threshold may be a percentage value or an absolute value) , T310 related trigger threshold (athreshold e.g. thresholdPercentageT310 generated by MN or source PSCell or source SN, and the threshold may be a percentage value or an absolute value) , or T312 related trigger threshold (athreshold e.g. thresholdPercentageT312 generated by MN or source PSCell or source SN, and the threshold may be a percentage value or an absolute value) . Based on the network configuration, the UE stores successful PSCell change or addition or CPC or CPA related information or generates the VarSuccessPSCellChangeorAddition-Report or SPR when at least one trigger condition is satisfied and / or random access (RA) to a target PSCell is successful. SPR can be generated and reported to the network (e.g. source MN, source SN or target SN or other network node) , including successful PSCell change or PSCell addition or CPC or CPA related information, for example, at least one of: cell information of the source PSCell, cell information of the target PSCell, success PSCell change or addition cause value (e.g. t304, t310, t312 cause, etc. ) , measurement results of source PSCell and / or target PSCell and / or neighbour cell (s) , and RA information (e.g. RACH configurations for target PSCell) . The cell information may include global cell identity, tracking area code of the cell, and / or, PCI and carrier frequency information.
[0103] Currently, details for MRO for a near-failure successful case in a Subsequent CPAC procedure have not been specifically discussed yet in a wireless communication system or the like. For example, the following issues need to be solved: since a MN or SN initiated Subsequent CPAC procedure comprises an initial CPAC phase (or an initial CPAC execution) and at least one following subsequent CPC phase (or at least one following subsequent CPC execution) , how a network side configures trigger condition (s) of a successful report (e.g. SPR, a newly introduced report or a newly named report) for an initial CPAC phase or a following subsequent CPC phase in the Subsequent CPAC procedure; when both a MN initiated Subsequent CPAC procedure and a SN initiated Subsequent CPAC procedure are configured to a UE simultaneously, how does the UE handle the received configuration (s) related with a successful report (e.g. SPR or a newly introduced report or a newly named report) ; how to enable correct forwarding of a successful report (e.g. SPR, a newly introduced report or a newly named report) at a network side especially for the case that a legacy PAC or CPAC procedure and a Subsequent CPAC procedure are configured to a UE simultaneously, e.g. how does the network side identify whether the SPR is generated for the legacy PAC or CPAC procedure or for a Subsequent CPAC procedure; or for a SN initiated Subsequent CPAC procedure, when a UE's context is released at a source SN, how does the source SN identify the UE's context when receiving a SCG failure information report message.
[0104] Embodiments of the present disclosure aim to resolve the abovementioned issues. For example, some embodiments of the present disclosure introduce solutions on how a network side configures trigger condition (s) of a successful report for an initial CPAC phase or a following subsequent CPC phase in a Subsequent CPAC procedure. In particular, in an embodiment, a network node initiating a Subsequent CPAC procedure decides at least one T310 or T312 related trigger threshold for both an initial CPAC phase and following subsequent CPC phase (s) . In another embodiment, a network node initiating a Subsequent CPAC procedure decides at least one T310 or T312 related trigger threshold for an initial CPAC phase, while the corresponding source SN or source PSCell of a following subsequent CPC phase decides at least one T310 or T312 related trigger threshold for the following subsequent CPC phase (s) . For example, at least one T310 or T312 or T034 related trigger threshold for each of at least one subsequent CPC phase of the Subsequent CPAC procedure may be common, and if common, an indication concerning that "at least one T310 or T312 or T034 related trigger threshold for each of at least one subsequent CPC phase of the Subsequent CPAC procedure are common or same" may be sent to the UE.
[0105] Some other embodiments of the present disclosure introduce solutions for a UE's behavior when both a MN initiated Subsequent CPAC procedure and a SN initiated Subsequent CPAC procedure are configured to a UE simultaneously. In particular, a UE may store one or more configurations related with a successful report for a MN initiated Subsequent CPAC procedure and for a SN initiated Subsequent CPAC procedure, respectively. In an embodiment, the UE may only monitor one or more configurations associated with at least one T310 or T312 related trigger threshold of an initial CPAC phase or of at least one subsequent CPC phase which are configured by a network node (e.g. MN or SN) that initiates the Subsequent CPAC procedure, or at least one T310 or T312 related trigger threshold of at least one subsequent CPC phase which are configured by a source SN or a source PSCell of the subsequent CPC phase, e.g. based on a network configured indication which indicates whether the Subsequent CPAC procedure is initiated by a MN or by a SN. In another embodiment, the UE may include "an indication concerning that the executed Subsequent CPAC procedure is initiated by a MN or a SN" in the successful report.
[0106] Some embodiments of the present disclosure introduce solutions about how to enable correct forwarding of a successful report at a network side when a Subsequent CPAC procedure and a legacy PAC or CPAC procedure are configured to a UE simultaneously. For instance, in an embodiment, in a UE-based solution, a UE may indicate to a network node (e.g. MN or SN) about whether a SPR is generated for a legacy PAC or CPAC procedure or for a Subsequent CPAC procedure, e.g. via an indication in the SPR or via a SPR availability indication. Optionally, in an embodiment, the UE may be indicated that one or more SPR configurations are configured for a Subsequent CPAC procedure or for a legacy PAC or CPAC procedure. In another embodiment, in a network-based solution, a network node (e.g. MN or SN) identifies whether a SPR is generated for a legacy PAC or CPAC procedure or for a Subsequent CPAC procedure based on the stored UE's context by implementation.
[0107] Some embodiments of the present disclosure introduce solutions about how does a source SN identify a UE's context when receiving a SCG failure information report message, e.g. when a UE's context is released at a source SN in a SN initiated Subsequent CPAC procedure.
[0108] In the present disclosure, a Subsequent CPAC procedure may also be named as "a SCPAC procedure" or the like. A trigger condition may also be named as "a trigger threshold, " "a trigger event" or the like. For instance, at least one T310 related trigger threshold may also be named as "at least one T310 related trigger condition, " "at least one T310 related trigger event" or the like.
[0109] In the present disclosure, a SCPAC procedure may include one or more subsequent CPC phases, i.e. one or more subsequent CPC phases following an initial CPAC phase of the SCPAC procedure. A subsequent CPC phase following the initial CPAC phase may refer to a first subsequent CPC phase next to the initial CPAC phase, and may also refer to any (e.g. a second or a third or the like) subsequent CPC phase which is after the first subsequent CPC phase and the initial CPAC phase.
[0110] More details of the embodiments of the present disclosure will be illustrated in the following text in combination with the appended drawings.
[0111] Figure 1 illustrates an example of a wireless communications system 100 in accordance with aspects of the present disclosure. The wireless communications system 100 may include one or more NE 102, one or more UE 104, and a core network (CN) 106. The wireless communications system 100 may support various radio access technologies. In some implementations, the wireless communications system 100 may be a 4G network, such as an LTE network or an LTE-Advanced (LTE-A) network. In some other implementations, the wireless communications system 100 may be a NR network, such as a 5G network, a 5G-Advanced (5G-A) network, or a 5G ultrawideband (5G-UWB) network. In other implementations, the wireless communications system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20. The wireless communications system 100 may support radio access technologies beyond 5G, for example, 6G. Additionally, the wireless communications system 100 may support technologies, such as time division multiple access (TDMA) , frequency division multiple access (FDMA) , or code division multiple access (CDMA) , etc.
[0112] The one or more NE 102 may be dispersed throughout a geographic region to form the wireless communications system 100. One or more of the NE 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a network function, a network entity, a radio access network (RAN) , a NodeB, an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. An NE 102 and a UE 104 may communicate via a communication link, which may be a wireless or wired connection. For example, an NE 102 and a UE 104 may perform wireless communication (e.g. receive signaling, transmit signaling) over a Uu interface.
[0113] An NE 102 may provide a geographic coverage area for which the NE 102 may support services for one or more UEs 104 within the geographic coverage area. For example, an NE 102 and a UE 104 may support wireless communication of signals related to services (e.g. voice, video, packet data, messaging, broadcast, etc. ) according to one or multiple radio access technologies. In some implementations, an NE 102 may be moveable, for example, a satellite associated with a non-terrestrial network (NTN) . In some implementations, different geographic coverage areas associated with the same or different radio access technologies may overlap, but the different geographic coverage areas may be associated with different NE 102.
[0114] The one or more UE 104 may be dispersed throughout a geographic region of the wireless communications system 100. A UE 104 may include or may be referred to as a remote unit, a mobile device, a wireless device, a remote device, a subscriber device, a transmitter device, a receiver device, or some other suitable terminology. In some implementations, the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples. Additionally, or alternatively, the UE 104 may be referred to as an Internet-of-Things (IoT) device, an Internet-of-Everything (IoE) device, or machine-type communication (MTC) device, among other examples.
[0115] A UE 104 may be able to support wireless communication directly with other UEs 104 over a communication link. For example, a UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular-V2X deployments, the communication link may be referred to as a sidelink. For example, a UE 104 may support wireless communication directly with another UE 104 over a PC5 interface.
[0116] An NE 102 may support communications with the CN 106, or with another NE 102, or both. For example, an NE 102 may interface with other NE 102 or the CN 106 through one or more backhaul links (e.g. S1, N2, or network interface) . In some implementations, the NE 102 may communicate with each other directly. In some other implementations, the NE 102 may communicate with each other or indirectly (e.g. via the CN 106. In some implementations, one or more NE 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC) . An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as a radio heads, smart radio heads, or transmission-reception points (TRPs) .
[0117] The CN 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. The CN 106 may be an evolved packet core (EPC) , or a 5G core (5GC) , which may include a control plane entity that manages access and mobility (e.g. a mobility management entity (MME) , an access and mobility management functions (AMF) ) and a user plane entity that routes packets or interconnects to external networks (e.g. a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . In some implementations, the control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g. data bearers, signal bearers, etc. ) for the one or more UEs 104 served by the one or more NE 102 associated with the CN 106.
[0118] The CN 106 may communicate with a packet data network over one or more backhaul links (e.g. via an S1, N2, or another network interface) . The packet data network may include an application server. In some implementations, one or more UEs 104 may communicate with the application server. A UE 104 may establish a session (e.g. a protocol data unit (PDU) session, or the like) with the CN 106 via an NE 102. The CN 106 may route traffic (e.g. control information, data, and the like) between the UE 104 and the application server using the established session (e.g. the established PDU session) . The PDU session may be an example of a logical connection between the UE 104 and the CN 106 (e.g. one or more network functions of the CN 106) .
[0119] In the wireless communications system 100, the NEs 102 and the UEs 104 may use resources of the wireless communications system 100 (e.g. time resources (e.g. symbols, slots, subframes, frames, or the like) or frequency resources (e.g. subcarriers, carriers) ) to perform various operations (e.g. wireless communications) . In some implementations, the NEs 102 and the UEs 104 may support different resource structures. For example, the NEs 102 and the UEs 104 may support different frame structures. In some implementations, such as in 4G, the NEs 102 and the UEs 104 may support a single frame structure. In some other implementations, such as in 5G and among other suitable radio access technologies, the NEs 102 and the UEs 104 may support various frame structures (i.e. multiple frame structures) . The NEs 102 and the UEs 104 may support various frame structures based on one or more numerologies.
[0120] One or more numerologies may be supported in the wireless communications system 100, and a numerology may include a subcarrier spacing and a cyclic prefix. A first numerology (e.g. μ=0) may be associated with a first subcarrier spacing (e.g. 15 kHz) and a normal cyclic prefix. In some implementations, the first numerology (e.g. μ=0) associated with the first subcarrier spacing (e.g. 15 kHz) may utilize one slot per subframe. A second numerology (e.g. μ=1) may be associated with a second subcarrier spacing (e.g. 30 kHz) and a normal cyclic prefix. A third numerology (e.g. μ=2) may be associated with a third subcarrier spacing (e.g. 60 kHz) and a normal cyclic prefix or an extended cyclic prefix. A fourth numerology (e.g. μ=3) may be associated with a fourth subcarrier spacing (e.g. 120 kHz) and a normal cyclic prefix. A fifth numerology (e.g. μ=4) may be associated with a fifth subcarrier spacing (e.g. 240 kHz) and a normal cyclic prefix.
[0121] A time interval of a resource (e.g. a communication resource) may be organized according to frames (also referred to as radio frames) . Each frame may have a duration, for example, a 10 millisecond (ms) duration. In some implementations, each frame may include multiple subframes. For example, each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration. In some implementations, each frame may have the same duration. In some implementations, each subframe of a frame may have the same duration.
[0122] Additionally or alternatively, a time interval of a resource (e.g. a communication resource) may be organized according to slots. For example, a subframe may include a number (e.g. quantity) of slots. The number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communications system 100. For instance, the first, second, third, fourth, and fifth numerologies (i.e. μ=0, μ=1, μ=2, μ=3, μ=4) associated with respective subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize a single slot per subframe, two slots per subframe, four slots per subframe, eight slots per subframe, and 16 slots per subframe, respectively. Each slot may include a number (e.g. quantity) of symbols (e.g. OFDM symbols) . In some implementations, the number (e.g. quantity) of slots for a subframe may depend on a numerology. For a normal cyclic prefix, a slot may include 14 symbols. For an extended cyclic prefix (e.g. applicable for 60 kHz subcarrier spacing) , a slot may include 12 symbols. The relationship between the number of symbols per slot, the number of slots per subframe, and the number of slots per frame for a normal cyclic prefix and an extended cyclic prefix may depend on a numerology. It should be understood that reference to a first numerology (e.g. μ=0) associated with a first subcarrier spacing (e.g. 15 kHz) may be used interchangeably between subframes and slots.
[0123] In the wireless communications system 100, an electromagnetic (EM) spectrum may be split, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc. By way of example, the wireless communications system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz –7.125 GHz) , FR2 (24.25 GHz –52.6 GHz) , FR3 (7.125 GHz –24.25 GHz) , FR4 (52.6 GHz –114.25 GHz) , FR4a or FR4-1 (52.6 GHz –71 GHz) , and FR5 (114.25 GHz –300 GHz) . In some implementations, the NEs 102 and the UEs 104 may perform wireless communications over one or more of the operating frequency bands. In some implementations, FR1 may be used by the NEs 102 and the UEs 104, among other equipment or devices for cellular communications traffic (e.g. control information, data) . In some implementations, FR2 may be used by the NEs 102 and the UEs 104, among other equipment or devices for short-range, high data rate capabilities.
[0124] FR1 may be associated with one or multiple numerologies (e.g. at least three numerologies) . For example, FR1 may be associated with a first numerology (e.g. μ=0) , which includes 15 kHz subcarrier spacing; a second numerology (e.g. μ=1) , which includes 30 kHz subcarrier spacing; and a third numerology (e.g. μ=2) , which includes 60 kHz subcarrier spacing. FR2 may be associated with one or multiple numerologies (e.g. at least 2 numerologies) . For example, FR2 may be associated with a third numerology (e.g. μ=2) , which includes 60 kHz subcarrier spacing; and a fourth numerology (e.g. μ=3) , which includes 120 kHz subcarrier spacing.
[0125] Figure 2 illustrates an example of a UE 200 in accordance with aspects of the present disclosure. The UE 200 may include a processor 202, a memory 204, a controller 206, and a transceiver 208. The processor 202, the memory 204, the controller 206, or the transceiver 208, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. These components may be coupled (e.g. operatively, communicatively, functionally, electronically, electrically) via one or more interfaces.
[0126] The processor 202, the memory 204, the controller 206, or the transceiver 208, or various combinations or components thereof may be implemented in hardware (e.g. circuitry) . The hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , or other programmable logic device, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
[0127] The processor 202 may include an intelligent hardware device (e.g. a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof) . In some implementations, the processor 202 may be configured to operate the memory 204. In some other implementations, the memory 204 may be integrated into the processor 202. The processor 202 may be configured to execute computer-readable instructions stored in the memory 204 to cause the UE 200 to perform various functions of the present disclosure.
[0128] The memory 204 may include volatile or non-volatile memory. The memory 204 may store computer-readable, computer-executable code including instructions when executed by the processor 202 cause the UE 200 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such the memory 204 or another type of memory. Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.
[0129] In some implementations, the processor 202 and the memory 204 coupled with the processor 202 may be configured to cause the UE 200 to perform one or more of the functions described herein (e.g. executing, by the processor 202, instructions stored in the memory 204) .
[0130] For example, the processor 202 may support wireless communication at the UE 200 in accordance with examples as disclosed with respect to Figure 5. The UE 200 may be configured to support: a means for receiving a configuration set for a subsequent CPAC procedure, wherein the configuration set includes a trigger condition of a successful report for an initial CPAC phase of the subsequent CPAC procedure, and wherein the trigger condition is decided by a network node; and a means for storing the configuration set.
[0131] The controller 206 may manage input and output signals for the UE 200. The controller 206 may also manage peripherals not integrated into the UE 200. In some implementations, the controller 206 may utilize an operating system such as or other operating systems. In some implementations, the controller 206 may be implemented as part of the processor 202.
[0132] In some implementations, the UE 200 may include at least one transceiver 208. In some other implementations, the UE 200 may have more than one transceiver 208. The transceiver 208 may represent a wireless transceiver. The transceiver 208 may include one or more receiver chains 210, one or more transmitter chains 212, or a combination thereof. The means for receiving abovementioned in the processor 202 or the means for transmitting in the processor 202 may be implemented via at least one transceiver 208.
[0133] A receiver chain 210 may be configured to receive signals (e.g. control information, data, packets) over a wireless medium. For example, the receiver chain 210 may include one or more antennas for receive the signal over the air or wireless medium. The receiver chain 210 may include at least one amplifier (e.g. a low-noise amplifier (LNA) ) configured to amplify the received signal. The receiver chain 210 may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receiver chain 210 may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
[0134] A transmitter chain 212 may be configured to generate and transmit signals (e.g. control information, data, packets) . The transmitter chain 212 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) . The transmitter chain 212 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmitter chain 212 may also include one or more antennas for transmitting the amplified signal into the air or wireless medium.
[0135] Figure 3 illustrates an example of a processor 300 in accordance with aspects of the present disclosure. The processor 300 may be an example of a processor configured to perform various operations in accordance with examples as described herein. The processor 300 may include a controller 302 configured to perform various operations in accordance with examples as described herein. The processor 300 may optionally include at least one memory 304, which may be, for example, an L1 / L2 / L3 cache. Additionally, or alternatively, the processor 300 may optionally include one or more arithmetic-logic units (ALUs) 306. One or more of these components may be in electronic communication or otherwise coupled (e.g. operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g. buses) .
[0136] The processor 300 may be a processor chipset and include a protocol stack (e.g. a software stack) executed by the processor chipset to perform various operations (e.g. receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein. The processor chipset may include one or more cores, one or more caches (e.g. memory local to or included in the processor chipset (e.g. the processor 300) or other memory (e.g. random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
[0137] The controller 302 may be configured to manage and coordinate various operations (e.g. signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 300 to cause the processor 300 to support various operations in accordance with examples as described herein. For example, the controller 302 may operate as a control unit of the processor 300, generating control signals that manage the operation of various components of the processor 300. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
[0138] The controller 302 may be configured to fetch (e.g. obtain, retrieve, receive) instructions from the memory 304 and determine subsequent instruction (s) to be executed to cause the processor 300 to support various operations in accordance with examples as described herein. The controller 302 may be configured to track memory address of instructions associated with the memory 304. The controller 302 may be configured to decode instructions to determine the operation to be performed and the operands involved. For example, the controller 302 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 300 to cause the processor 300 to support various operations in accordance with examples as described herein. Additionally, or alternatively, the controller 302 may be configured to manage flow of data within the processor 300. The controller 302 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 300.
[0139] The memory 304 may include one or more caches (e.g. memory local to or included in the processor 300 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementations, the memory 304 may reside within or on a processor chipset (e.g. local to the processor 300) . In some other implementations, the memory 304 may reside external to the processor chipset (e.g. remote to the processor 300) .
[0140] The memory 304 may store computer-readable, computer-executable code including instructions that, when executed by the processor 300, cause the processor 300 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. The controller 302 and / or the processor 300 may be configured to execute computer-readable instructions stored in the memory 304 to cause the processor 300 to perform various functions. For example, the processor 300 and / or the controller 302 may be coupled with or to the memory 304, the processor 300, the controller 302, and the memory 304 may be configured to perform various functions described herein. In some examples, the processor 300 may include multiple processors and the memory 304 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
[0141] The one or more ALUs 306 may be configured to support various operations in accordance with examples as described herein. In some implementations, the one or more ALUs 306 may reside within or on a processor chipset (e.g. the processor 300) . In some other implementations, the one or more ALUs 306 may reside external to the processor chipset (e.g. the processor 300) . One or more ALUs 306 may perform one or more computations such as addition, subtraction, multiplication, and division on data. For example, one or more ALUs 306 may receive input operands and an operation code, which determines an operation to be executed. One or more ALUs 306 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 306 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 306 to handle conditional operations, comparisons, and bitwise operations.
[0142] The processor 300 may support wireless communication in accordance with examples as disclosed herein.
[0143] In some implementations, the processor 300 may be configured to support a means for performing operations of a UE described with respect to Figure 5. The processor 300 may be configured to or operable to support: a means for receiving a configuration set for a subsequent CPAC procedure, wherein the configuration set includes a trigger condition of a successful report for an initial CPAC phase of the subsequent CPAC procedure, and wherein the trigger condition is decided by a network node; and a means for storing the configuration set.
[0144] In some implementations, the processor 300 may be configured to support a means for performing operations of a MN described with respect to Figure 6. The processor 300 may be configured to or operable to support: a means for obtaining a configuration set for a subsequent CPAC procedure, wherein the configuration set includes a trigger condition of a successful report for an initial CPAC phase of the subsequent CPAC procedure, and wherein the trigger condition is decided by a network node; and a means for transmitting the configuration set to a UE.
[0145] In some implementations, the processor 300 may be configured to support a means for performing operations of a SN as described with respect to Figure 7. The processor 300 may be configured to or operable to support: a means for generating a configuration set for a subsequent CPAC procedure, wherein the configuration set includes a trigger condition of a successful report for an initial CPAC phase of the subsequent CPAC procedure; and a means for transmitting the configuration set.
[0146] It should be appreciated by persons skilled in the art that the components in exemplary processor 300 may be changed, for example, some of the components in exemplary processor 300 may be omitted or modified or new component (s) may be added to exemplary processor 300, without departing from the spirit and scope of the disclosure. For example, in some embodiments, the processor 300 may not include the ALUs 306.
[0147] Figure 4 illustrates an example of a NE 400 in accordance with aspects of the present disclosure. The NE 400 may include a processor 402, a memory 404, a controller 406, and a transceiver 408. The processor 402, the memory 404, the controller 406, or the transceiver 408, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. These components may be coupled (e.g. operatively, communicatively, functionally, electronically, electrically) via one or more interfaces.
[0148] The processor 402, the memory 404, the controller 406, or the transceiver 408, or various combinations or components thereof may be implemented in hardware (e.g. circuitry) . The hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , or other programmable logic device, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
[0149] The processor 402 may include an intelligent hardware device (e.g. a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof) . In some implementations, the processor 402 may be configured to operate the memory 404. In some other implementations, the memory 404 may be integrated into the processor 402. The processor 402 may be configured to execute computer-readable instructions stored in the memory 404 to cause the NE 400 to perform various functions of the present disclosure.
[0150] The memory 404 may include volatile or non-volatile memory. The memory 404 may store computer-readable, computer-executable code including instructions when executed by the processor 402 cause the NE 400 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such the memory 404 or another type of memory. Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.
[0151] In some implementations, the processor 402 and the memory 404 coupled with the processor 402 may be configured to cause the NE 400 to perform one or more of the functions described herein (e.g. executing, by the processor 402, instructions stored in the memory 404) . For example, the processor 402 may support wireless communication at the NE 400 in accordance with examples as disclosed herein.
[0152] In some implementations, the NE 400 may be a MN described with respect to Figure 6 and may be configured to or operable to support: a means for obtaining a configuration set for a subsequent CPAC procedure, wherein the configuration set includes a trigger condition of a successful report for an initial CPAC phase of the subsequent CPAC procedure, and wherein the trigger condition is decided by a network node; and a means for transmitting the configuration set to a UE.
[0153] In some implementations, the NE 400 may be a SN as described with respect to Figure 7 and may be configured to or operable to support: a means for generating a configuration set for a subsequent CPAC procedure, wherein the configuration set includes a trigger condition of a successful report for an initial CPAC phase of the subsequent CPAC procedure; and a means for transmitting the configuration set.
[0154] The controller 406 may manage input and output signals for the NE 400. The controller 406 may also manage peripherals not integrated into the NE 400. In some implementations, the controller 406 may utilize an operating system such as or other operating systems. In some implementations, the controller 406 may be implemented as part of the processor 402.
[0155] In some implementations, the NE 400 may include at least one transceiver 408. In some other implementations, the NE 400 may have more than one transceiver 408. The transceiver 408 may represent a wireless transceiver. The transceiver 408 may include one or more receiver chains 410, one or more transmitter chains 412, or a combination thereof. The means for receiving or the means for transmitting abovementioned in the processor 402 may be implemented via at least one transceiver 408.
[0156] A receiver chain 410 may be configured to receive signals (e.g. control information, data, packets) over a wireless medium. For example, the receiver chain 410 may include one or more antennas for receive the signal over the air or wireless medium. The receiver chain 410 may include at least one amplifier (e.g. a low-noise amplifier (LNA) ) configured to amplify the received signal. The receiver chain 410 may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receiver chain 410 may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
[0157] A transmitter chain 412 may be configured to generate and transmit signals (e.g. control information, data, packets) . The transmitter chain 412 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) . The transmitter chain 412 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmitter chain 412 may also include one or more antennas for transmitting the amplified signal into the air or wireless medium.
[0158] It should be appreciated by persons skilled in the art that the components in exemplary NE 400 may be changed, for example, some of the components in exemplary NE 400 may be omitted or modified or new component (s) may be added to exemplary NE 400, without departing from the spirit and scope of the disclosure. For example, in some embodiments, the NE 400 may not include the controller 406.
[0159] Figure 5 illustrates a flowchart of a method related to a subsequent CPAC procedure in accordance with some aspects of the present disclosure. The operations of the method may be implemented by a UE as described herein. In some implementations, aspects of operations 502 and 504 may be performed by UE 200 as described with reference to Figure 2. Each of operations 502 and 504 may be performed in accordance with examples as described herein. Specific examples are described in Embodiments 1, 2 and 3 as follows.
[0160] At operation 502, a UE may receive a configuration set (denoted as configuration set #1) for a subsequent CPAC procedure (denoted as SCPAC #1) . At operation 504, the UE may store configuration set #1. Configuration set #1 may include at least one trigger condition (denoted as trigger condition (s) #1) of a successful report (denoted as successful report #1) for an initial CPAC phase (or initial CPAC execution) of SCPAC #1.
[0161] In some implementations of the method, the UE may monitor configuration set #1, evaluate whether one or more trigger conditions within configuration set #1 are satisfied, and generate successful report #1 in response to satisfaction of the one or more trigger conditions within configuration set #1.
[0162] In some implementations, trigger condition (s) #1 includes at least one of the following:
[0163] (1) one T310 related trigger threshold for the initial CPAC phase of SCPAC #1;
[0164] (2) one T312 related trigger threshold for the initial CPAC phase of SCPAC #1; or
[0165] (3) at least one T304 related trigger threshold for the initial CPAC phase of SCPAC #1.
[0166] Trigger condition (s) #1 may be decided or generated by a network node (denoted as node #1) , e.g. a MN or a SN. For example, at least oneT310 or T312 related trigger threshold for the initial CPAC phase of SCPAC #1 is decided by a MN or a source SN of the initial CPAC phase. At least one T304 related trigger threshold for the initial CPAC phase of SCPAC #1 is decided by at least one candidate SN or a target SN of the initial CPAC phase.
[0167] In some implementations of the method, configuration set #1 may further include at least one trigger condition (denoted as trigger condition (s) #2) of successful report #1 for at least one subsequent CPC phase, e.g. one subsequent CPC phase is a phase that follows the initial CPAC phase of SCPAC #1. For example, trigger condition (s) #2 includes at least one T310 or T312 related trigger threshold for at least one subsequent CPC phase of SCPAC #1. In some embodiments, trigger condition (s) #2 is decided or generated by node #1 (e.g. a MN or a source SN of the initial CPAC phase which decides trigger condition (s) #1) , or by a source SN of anyone of at least one subsequent CPC phase (i.e. a candidate SN which generates the execution conditions for the following subsequent CPC phase when the candidate SN prepares the candidate SCG configuration (s) for candidate PSCell (s) ) . For example, at least one T310 or T312 related trigger threshold for a subsequent CPC phase of SCPAC #1 is decided by a source SN of the subsequent CPC phase.
[0168] In some embodiments, if trigger condition (s) #2 is decided by node #1, the UE may receive information (denoted as information #1) which indicates that trigger condition (s) #2 for each subsequent CPC phase of SCPAC #1 is the same (or common) . The UE may receive common trigger condition #2 for all the subsequent CPC phases of SCPAC #1.
[0169] In some other embodiments, if trigger condition (s) #2 is decided by node #1 and if trigger condition (s) #2 for each subsequent CPC phase of SCPAC #1 is not the same, the UE may receive two or more trigger conditions #2 for at least one subsequent CPC phase of SCPAC #1. For example, the UE receives two or more RRC reconfiguration messages including separate two or more trigger conditions #2 for two or more subsequent CPC phases of SCPAC #1.
[0170] In some implementations of the method, configuration set #1 further includes at least one trigger condition (denoted as trigger condition (s) #3) of successful report #1 for at least one subsequent CPC phase, e.g. one subsequent CPC phase is a phase that follows the initial CPAC phase of SCPAC #1. For example, trigger condition (s) #3 includes at least one T304 related trigger threshold for at least one subsequent CPC phase of SCPAC #1. Trigger condition (s) #3 may be decided by a candidate SN or a target SN of anyone of at least one subsequent CPC phase of SCPAC #1. For example, at least one T304 related trigger threshold for a subsequent CPC phase of SCPAC #1 is decided by a candidate SN or a target SN of the subsequent CPC phase.
[0171] In some embodiments, the UE may receive information (denoted as information #2) which indicates that trigger condition (s) #3 for each subsequent CPC phase of SCPAC #1 is the same (or common) . The UE may receive common trigger condition #3 for all the subsequent CPC phases of SCPAC #1.
[0172] In some other embodiments, if trigger condition (s) #3 for each subsequent CPC phase of SCPAC #1 is not the same, the UE may receive two or more trigger conditions #3 for at least one subsequent CPC phase of SCPAC #1. For example, the UE receives two or more RRC reconfiguration messages including separate two or more trigger conditions #3 for two or more subsequent CPC phases of SCPAC #1.
[0173] In some implementations of the method, the UE may receive the following information from a MN (e.g. directly or indirectly via the MN) or from a SN (e.g. a source SN of the initial CPAC phase) :
[0174] (1) trigger condition (s) #1;
[0175] (2) trigger condition (s) #2;
[0176] (3) trigger condition (s) #3;
[0177] (4) information #1;
[0178] (5) common trigger condition #2;
[0179] (6) two or more trigger conditions #2;
[0180] (7) information #2;
[0181] (8) common trigger condition #3, or
[0182] (9) two or more trigger conditions #3.
[0183] A specific example is described in Embodiment 1 as follows.
[0184] In some implementations of the method, the UE may receive another configuration set (denoted as configuration set #2) for another subsequent CPAC procedure (denoted as SCPAC #2) . Then, the UE may store configuration set #2. SCPAC #2 is initiated by another network node (denoted as node #2) . For example, node #1 is one of a MN or a SN, and node #2 is the other one of the MN or the SN. Configuration set #2 may include one or more trigger conditions of a successful report (denoted as successful report #2) for SCPAC #2.
[0185] In case that a subsequent CPAC procedure to be executed by the UE (denoted as SCPAC #3) is SCPAC #1 or SCPAC #2, there may be following embodiments.
[0186] In some embodiments, if SCPAC #3 is initiated by a MN (or PCell) or if SCPAC #3 is not initiated by a SN or if an execution condition of an initial CPAC phase (or an initial CPAC execution) of SCPAC #3 is configured by the MN (or PCell) and is fulfilled, the UE may perform at least one of following operations:
[0187] (1) the UE may only monitor a set of configurations associated with one or more trigger conditions of successful report for the initial CPAC phase of SCPAC #3 (i.e. SCPAC #1 or SCPAC #2) that is configured by the MN (or PCell) (e.g. one or more T310 related trigger thresholds and / or one or more T312 related trigger thresholds for the initial CPAC phase of SCPAC #3) ;
[0188] (2) the UE may only monitor a set of configurations associated with one or more trigger conditions of successful report for at least one subsequent CPC phase of SCPAC #3 that is configured by a source SN of anyone of the at least one subsequent CPC phase of SCPAC #3 (e.g. one or more T310 related trigger thresholds and / or one or more T312 related trigger thresholds for at least one subsequent CPC phase of SCPAC #3) , for example, if such trigger conditions are decided by the source SN of anyone of the at least one subsequent CPC phase of SCPAC #3; or
[0189] (3) the UE may only monitor a set of configurations associated with one or more trigger conditions of successful report for the at least one subsequent CPC phase of SCPAC #3 that is configured by the MN (or PCell) (e.g. one or more T310 related trigger thresholds and / or one or more T312 related trigger thresholds for at least one subsequent CPC phase of SCPAC #3) , for example, if such trigger conditions are decided by the MN (or PCell) .
[0190] In some other embodiments, if SCPAC #3 is initiated by a SN or if SCPAC #3 is not initiated by a MN or if an execution condition of an initial CPAC phase of SCPAC #3 is configured by the SN and is fulfilled, the UE may perform at least one of following operations:
[0191] (1) the UE may only monitor a set of configurations associated with one or more trigger conditions of successful report for the initial CPAC phase of SCPAC #3 that is configured by a source SN of the initial CPAC phase of SCPAC #3 (e.g. one or more T310 related trigger thresholds and / or one or more T312 related trigger thresholds for the initial CPAC phase of SCPAC #3) ;
[0192] (2) the UE may only monitor a set of configurations associated with one or more trigger conditions of successful report for at least one subsequent CPC phase of SCPAC #3 that is configured by a source SN of anyone of the at least one subsequent CPC phase of SCPAC #3 (e.g. one or more T310 related trigger thresholds and / or one or more T312 related trigger thresholds for at least one subsequent CPC phase of SCPAC #3) ; or
[0193] (3) the UE may only monitor a set of configurations associated with one or more trigger conditions of successful report for the at least one subsequent CPC phase of SCPAC #3 that is configured by the source SN of the initial CPAC phase of SCPAC #3.
[0194] In some implementations of the method, the UE may receive at least one of the following, e.g. in an RRC reconfiguration message:
[0195] (1) information (denoted as information #3) indicating that SCPAC #3 is initiated by the MN;
[0196] (2) information (denoted as information #4) indicating that SCPAC #3 is not initiated by the MN;
[0197] (3) information (denoted as information #5) indicating that SCPAC #3 is initiated by the SN; or
[0198] (4) information (denoted as information #6) indicating that SCPAC #3 is not initiated by the SN.
[0199] In some embodiments, the UE may determine that SCPAC #3 is initiated by the MN or SCPAC #3 is not initiated by the SN based on the following conditions:
[0200] (1) upon receiving information #3;
[0201] (2) upon receiving information #6;
[0202] (3) not receiving information #4; or
[0203] (4) not receiving information #5.
[0204] In some embodiments, the UE may determine that SCPAC #3 is initiated by the SN or SCPAC #3 is not initiated by the MN based on the following conditions:
[0205] (1) upon receiving information #4;
[0206] (2) upon receiving information #5;
[0207] (3) not receiving information #3; or
[0208] (4) not receiving information #6.
[0209] In some implementations of the method, the UE may generate a successful report (denoted as successful report #3) of SCPAC #3 in response to satisfaction of one or more trigger conditions within the set of configurations associated with the one or more trigger conditions monitored by the UE. Then, the UE may transmit successful report #3. For example, successful report #3 includes successful report #1 and / or successful report #2. Successful report #3 may include at least one of the following:
[0210] (1) information #3;
[0211] (2) information #4;
[0212] (3) information #5; or
[0213] (4) information #6.
[0214] A specific example is described in Embodiment 2 as follows.
[0215] In some implementations of the method, the UE may receive a configuration set (denoted as configuration set #3) , and configuration set #3 may be for a PAC procedure or a CPAC procedure (i.e. a legacy PAC / CPAC procedure) , and the UE may store configuration set #3. The PAC procedure or the CPAC procedure is initiated by a network node (denoted as node #3) . For example, each of node #1 (which decides trigger condition (s) #1) and node #3 may be a MN or a SN. Configuration set #3 may include one or more trigger conditions of a SPR for the PAC procedure or the CPAC procedure.
[0216] For instance, the UE may monitor configuration set #3, and evaluate whether one or more trigger conditions within configuration set #3 are satisfied. Upon satisfaction of one or more trigger conditions of a SPR within configuration set #3, the UE may generate the SPR, for example, if the configuration set #3 is for a PAC procedure, the UE may generate the SPR for the PAC procedure, if the configuration set #3 is for a CPAC procedure, the UE may generate the SPR for the CPAC procedure.
[0217] In some embodiments, the UE may monitor configuration set #3 for the PAC procedure, if the UE receives configuration set #3 for the PAC procedure and the PAC procedure is executed at the UE. The UE may monitor configuration set #3 for the CPAC procedure, if the UE receives configuration set #3 for the CPAC procedure and the CPAC procedure is executed at the UE. The UE may monitor configuration set #1 for SCPAC #1, if the UE receives configuration set #1 for the SCPAC#1 and SCPAC #1 is executed at the UE.
[0218] In some implementations of the method, if successful report #1 is a SPR (e.g. if a SPR is totally reused for SCPAC #1) , the UE may receive information (denoted as information #7) which indicates that one or more SPR configurations received by the UE is configured for "which one of SCPAC #1 or the PAC procedure or the CPAC procedure. " For example, information #7 is included in an RRC reconfiguration message. The one or more SPR configurations may include configuration set #1 and / or configuration set #3.
[0219] In some implementations of the method, the UE may generate a SPR (denoted as SPR #A) and transmit at least one of the following:
[0220] (1) SPR #A; and
[0221] (2) information (denoted as information #8) related to SPR #A. Information #8 may indicate that SPR #A is generated for at least one of the following: SCPAC #1; the PAC procedure; or the CPAC procedure. For example, information #8 may include:
[0222] a) a cause value for generating SPR #A;
[0223] b) an explicit indication indicating "SPR #A is generated for which procedure" ;
[0224] c) an implicit indication indicating "SPR #A is generated for which procedure" ; and / or
[0225] d) an availability indication indicating "SPR #A is available for which procedure" .
[0226] A specific example is described in Embodiment 3 as follows.
[0227] Figure 6 illustrates a flowchart of a method related to a subsequent CPAC procedure in accordance with some aspects of the present disclosure. The operations of the method may be implemented by a MN as described herein. In some implementations, aspects of operations 602 and 604 may be performed by NE 400 as described with reference to Figure 4. Each of operations 602 and 604 may be performed in accordance with examples as described herein. Specific examples are described in Embodiments 1, 2 and 3 as follows.
[0228] At operation 602, a MN may obtain a configuration set (e.g. configuration set #1 as described in the embodiments of Figure 5) for a subsequent CPAC procedure (e.g. SCPAC #1 as described in the embodiments of Figure 5) . In some embodiments, the MN may generate configuration set #1. In some embodiments, the MN may receive configuration set #1 from a SN.
[0229] Configuration set #1 may include at least one trigger condition (e.g. trigger condition (s) #1 as described in the embodiments of Figure 5) of a successful report (e.g. successful report #1 as described in the embodiments of Figure 5) for an initial CPAC phase (or initial CPAC execution) of SCPAC #1. Trigger condition (s) #1 is decided or generated by a network node (e.g. node #1 as described in the embodiments of Figure 5) . In some implementations, trigger condition (s) #1 includes at least one of the following:
[0230] (1) one T310 related trigger threshold for the initial CPAC phase of SCPAC #1;
[0231] (2) one T312 related trigger threshold for the initial CPAC phase of SCPAC #1; or
[0232] (3) at least one T304 related trigger threshold for the initial CPAC phase of SCPAC #1.
[0233] At operation 604, the MN may transmit configuration set #1 obtained at operation 602 to a UE.
[0234] In some implementations of the method, configuration set #1 may further include at least one trigger condition (e.g. trigger condition (s) #2 as described in the embodiments of Figure 5) of successful report #1 for at least one subsequent CPC phase, e.g. one subsequent CPC phase is a phase that follows the initial CPAC phase of SCPAC #1. For example, trigger condition (s) #2 includes at least one T310 or T312 related trigger threshold for at least one subsequent CPC phase of SCPAC #1. In some embodiments, trigger condition (s) #2 is decided or generated by node #1 (e.g. a MN or a source SN of the initial CPAC phase which decides trigger condition (s) #1) , or by a source SN of anyone of at least one subsequent CPC phase (i.e. a candidate SN which generates the execution conditions for the following subsequent CPC phase when the candidate SN prepares the candidate SCG configuration (s) for candidate PSCell (s) ) . For example, at least one T310 or T312 related trigger threshold for a subsequent CPC phase of SCPAC #1 is decided by a source SN of the subsequent CPC phase.
[0235] In some embodiments, if trigger condition (s) #2 is decided by node #1, the MN may transmit, to the UE, information (e.g. information #1 as described in the embodiments of Figure 5) which indicates that trigger condition (s) #2 for each subsequent CPC phase of SCPAC #1 is the same (or common) . The MN may transmit, to the UE, common trigger condition #2 for all the subsequent CPC phases of SCPAC #1.
[0236] In some other embodiments, if trigger condition (s) #2 is decided by node #1 and if trigger condition (s) #2 for each subsequent CPC phase of SCPAC #1 is not the same, the MN may transmit, to the UE, two or more trigger conditions #2 for at least one subsequent CPC phase of SCPAC #1. For example, the MN may transmit, to the UE, two or more RRC reconfiguration messages including separate two or more trigger conditions #2 for two or more subsequent CPC phases of SCPAC #1.
[0237] In some implementations of the method, configuration set #1 further includes at least one trigger condition (e.g. trigger condition (s) #3 as described in the embodiments of Figure 5) of successful report #1 for at least one subsequent CPC phase, e.g. one subsequent CPC phase is a phase that follows the initial CPAC phase of SCPAC #1. For example, trigger condition (s) #3 includes at least one T304 related trigger threshold for at least one subsequent CPC phase of SCPAC #1. Trigger condition (s) #3 may be decided by a candidate SN or a target SN of anyone of at least one subsequent CPC phase of SCPAC #1. For example, at least one T304 related trigger threshold for a subsequent CPC phase of SCPAC #1 is decided by a candidate SN or a target SN of the subsequent CPC phase.
[0238] In some embodiments, the MN may transmit, to the UE, information (e.g. information #2 as described in the embodiments of Figure 5) which indicates that trigger condition (s) #3 for each subsequent CPC phase of SCPAC #1 is the same (or common) . The MN may transmit, to the UE, common trigger condition #3 for all the subsequent CPC phases of SCPAC #1.
[0239] In some other embodiments, if trigger condition (s) #3 for each subsequent CPC phase of SCPAC #1 is not the same, the MN may transmit, to the UE, two or more trigger conditions #3 for at least one subsequent CPC phase of SCPAC #1. For example, the MN may transmit, to the UE, two or more RRC reconfiguration messages including separate two or more trigger conditions #3 for two or more subsequent CPC phases of SCPAC #1.
[0240] In some implementations of the method, the MN may generate at least one of the following or receive at least one of the following from a SN (e.g. a source SN of the initial CPAC phase, or a candidate SN or target SN of the initial CPAC phase, or a candidate SN or target SN of the subsequent CPC phase) :
[0241] (1) trigger condition (s) #1;
[0242] (2) trigger condition (s) #2;
[0243] (3) trigger condition (s) #3;
[0244] (4) information #1;
[0245] (5) common trigger condition #2;
[0246] (6) two or more trigger conditions #2;
[0247] (7) information #2;
[0248] (8) common trigger condition #3, or
[0249] (9) two or more trigger conditions #3.
[0250] A specific example is described in Embodiment 1 as follows.
[0251] In some implementations of the method, the MN may transmit, to the UE, another configuration set (e.g. configuration set #2 as described in the embodiments of Figure 5) for another subsequent CPAC procedure (e.g. SCPAC #2 as described in the embodiments of Figure 5) . SCPAC #2 is initiated by another network node (e.g. node #2 as described in the embodiments of Figure 5) . For example, node #1 is one of a MN or a SN, and node #2 is the other one of the MN or the SN. Configuration set #2 may include one or more trigger conditions of a successful report (e.g. successful report #2 as described in the embodiments of Figure 5) for SCPAC #2.
[0252] In some implementations of the method, the MN may transmit, to the UE, at least one of the following, e.g. in an RRC reconfiguration message:
[0253] (1) information (e.g. information #3 as described in the embodiments of Figure 5) indicating that a subsequent CPAC procedure to be executed by the UE (e.g. SCPAC #3 as described in the embodiments of Figure 5) , which is SCPAC #1 or SCPAC #2, is initiated by the MN;
[0254] (2) information (e.g. information #4 as described in the embodiments of Figure 5) indicating that SCPAC #3 is not initiated by the MN;
[0255] (3) information (e.g. information #5 as described in the embodiments of Figure 5) indicating that SCPAC #3 is initiated by the SN; or
[0256] (4) information (e.g. information #6 as described in the embodiments of Figure 5) indicating that SCPAC #3 is not initiated by the SN.
[0257] In some embodiments, the MN may receive a successful report (e.g. successful report #3 as described in the embodiments of Figure 5) , e.g. from the UE or another network node. Successful report #3 may include successful report #1 and / or successful report #2. For example, successful report #3 may include at least one of the following:
[0258] (1) information #3;
[0259] (2) information #4;
[0260] (3) information #5; or
[0261] (4) information #6.
[0262] A specific example is described in Embodiment 2 as follows.
[0263] In some implementations of the method, the MN may transmit, to the UE, a configuration set (e.g. configuration set #3 as described in the embodiments of Figure 5) , and configuration set #3 may be for a PAC procedure or a CPAC procedure (i.e. a legacy PAC / CPAC procedure) . The PAC procedure or the CPAC procedure is initiated by a network node (e.g. node #3 as described in the embodiments of Figure 5) . For example, each of node #1 (which decides trigger condition (s) #1) and node #3 may be the MN or a SN. Configuration set #3 may include one or more trigger conditions of a SPR for the PAC procedure or the CPAC procedure.
[0264] In some implementations of the method, the MN may transmit, to the UE, information (e.g. information #7 as described in the embodiments of Figure 5) which indicates that one or more SPR configurations transmitted to the UE is configured for "which one of SCPAC #1 or the PAC procedure or the CPAC procedure. " For example, information #7 is included in an RRC reconfiguration message. The one or more SPR configurations may include configuration set #1 and / or configuration set #3.
[0265] In some implementations of the method, the MN may receive at least one of the following from the UE:
[0266] (1) a SPR (e.g. SPR #Aas described in the embodiments of Figure 5) ; and
[0267] (2) information (e.g. information #8 as described in the embodiments of Figure 5) related to SPR #A. Information #8 may indicate that SPR #A is generated for at least one of the following: SCPAC #1; the PAC procedure; or the CPAC procedure. For example, information #8 may include:
[0268] a) a cause value for generating SPR #A;
[0269] b) an explicit indication indicating "SPR #A is generated for which procedure" ;
[0270] c) an implicit indication indicating "SPR #A is generated for which procedure" ; and / or
[0271] d) an availability indication indicating "SPR #A is available for which procedure" .
[0272] In some implementations of the method, the MN may identify, based on information #8 or the stored UE context information, SPR #A is generated for one of the following: SCPAC #1; the PAC procedure; or the CPAC procedure. A specific example is described in Embodiment 3 as follows.
[0273] Figure 7 illustrates a flowchart of a method related to a subsequent CPAC procedure in accordance with some aspects of the present disclosure. The operations of the method may be implemented by a SN as described herein. In some implementations, aspects of operations 702 and 704 may be performed by NE 400 as described with reference to Figure 4. Each of operations 702 and 704 may be performed in accordance with examples as described herein. Specific examples are described in Embodiments 1, 2 and 3 as follows.
[0274] At operation 702, a SN may generate a configuration set (e.g. configuration set #1 as described in the embodiments of Figure 5) for a subsequent CPAC procedure (e.g. SCPAC #1 as described in the embodiments of Figure 5) . At operation 704, the SN may transmit configuration set #1, e.g. to a UE or the MN.
[0275] Configuration set #1 may include at least one trigger condition (e.g. trigger condition (s) #1 as described in the embodiments of Figure 5) of a successful report (e.g. successful report #1 as described in the embodiments of Figure 5) for an initial CPAC phase (or initial CPAC execution) of SCPAC #1. For example, trigger condition (s) #1 is decided or generated by the SN, e.g. a source SN of the initial CPAC phase or a target SN of the initial CPAC phase. In some implementations, trigger condition (s) #1 includes at least one of the following:
[0276] (1) one T310 related trigger threshold for the initial CPAC phase of SCPAC #1;
[0277] (2) one T312 related trigger threshold for the initial CPAC phase of SCPAC #1; or
[0278] (3) at least one T304 related trigger threshold for the initial CPAC phase of SCPAC #1.
[0279] In some implementations of the method, configuration set #1 may further include at least one trigger condition (e.g. trigger condition (s) #2 as described in the embodiments of Figure 5) of successful report #1 for at least one subsequent CPC phase, e.g. one subsequent CPC phase is a phase that follows the initial CPAC phase of SCPAC #1. For example, trigger condition (s) #2 includes at least one T310 or T312 related trigger threshold for at least one subsequent CPC phase of SCPAC #1. In some embodiments, trigger condition (s) #2 is decided or generated by the SN, e.g. a source SN of the initial CPAC phase or a source SN of anyone of at least one subsequent CPC phase. For example, at least one T310 or T312 related trigger threshold for a subsequent CPC phase of SCPAC #1 is decided by a source SN of the initial CPAC phase or a source SN of the subsequent CPC phase.
[0280] In some embodiments, the SN may transmit, to the UE directly or to the UE via the MN, information (e.g. information #1 as described in the embodiments of Figure 5) which indicates that trigger condition (s) #2 for each subsequent CPC phase of SCPAC #1 is the same (or common) . The SN may transmit, to the UE directly or to the UE via the MN, common trigger condition #2 for all the subsequent CPC phases of SCPAC #1.
[0281] In some other embodiments, if trigger condition (s) #2 for each subsequent CPC phase of SCPAC #1 is not the same, the SN may transmit, to the UE directly or to the UE via the MN, two or more trigger conditions #2 for at least one subsequent CPC phase of SCPAC #1. For example, the SN may transmit, to the UE directly or to the UE via the MN, two or more RRC reconfiguration messages including separate two or more trigger conditions #2 for two or more subsequent CPC phases of SCPAC #1.
[0282] In some implementations of the method, configuration set #1 further includes at least one trigger condition (e.g. trigger condition (s) #3 as described in the embodiments of Figure 5) of successful report #1 for at least one subsequent CPC phase, e.g. one subsequent CPC phase is a phase that follows the initial CPAC phase of SCPAC #1. For example, trigger condition (s) #3 includes at least one T304 related trigger threshold for at least one subsequent CPC phase of SCPAC #1. Trigger condition (s) #3 may be decided by the SN, e.g. a candidate SN or a target SN of anyone of at least one subsequent CPC phase of SCPAC #1. For example, at least one T304 related trigger threshold for a subsequent CPC phase of SCPAC #1 is decided by a candidate SN or a target SN of the subsequent CPC phase.
[0283] In some embodiments, the SN may transmit, to the UE directly or to the UE via the MN, information (e.g. information #2 as described in the embodiments of Figure 5) which indicates that trigger condition (s) #3 for each subsequent CPC phase of SCPAC #1 is the same (or common) . The SN may transmit, to the UE directly or to the UE via the MN, common trigger condition #3 for all the subsequent CPC phases of SCPAC #1.
[0284] In some other embodiments, if trigger condition (s) #3 for each subsequent CPC phase of SCPAC #1 is not the same, the SN may transmit, to the UE directly or to the UE via the MN, two or more trigger conditions #3 for at least one subsequent CPC phase of SCPAC #1. For example, the SN may transmit, to the UE directly or to the UE via the MN, two or more RRC reconfiguration messages including separate two or more trigger conditions #3 for two or more subsequent CPC phases of SCPAC #1. A specific example is described in Embodiment 1 as follows.
[0285] In some implementations of the method, the SN may transmit, to the UE directly or to the UE via the MN, another configuration set (e.g. configuration set #2 as described in the embodiments of Figure 5) for another subsequent CPAC procedure (e.g. SCPAC #2 as described in the embodiments of Figure 5) . SCPAC #2 is initiated by another network node (e.g. node #2 as described in the embodiments of Figure 5) . For example, node #1 is one of the MN or the SN, and node #2 is the other one of the MN or the SN. Configuration set #2 may include one or more trigger conditions of a successful report (e.g. successful report #2 as described in the embodiments of Figure 5) for SCPAC #2.
[0286] In some implementations of the method, the SN may transmit, to the UE directly or to the UE via the MN, at least one of the following, e.g. in an RRC reconfiguration message:
[0287] (1) information (e.g. information #3 as described in the embodiments of Figure 5) indicating that a subsequent CPAC procedure to be executed by the UE (e.g. SCPAC #3 as described in the embodiments of Figure 5) , which is SCPAC #1 or SCPAC #2, is initiated by the MN;
[0288] (2) information (e.g. information #4 as described in the embodiments of Figure 5) indicating that SCPAC #3 is not initiated by the MN;
[0289] (3) information (e.g. information #5 as described in the embodiments of Figure 5) indicating that SCPAC #3 is initiated by the SN; or
[0290] (4) information (e.g. information #6 as described in the embodiments of Figure 5) indicating that SCPAC #3 is not initiated by the SN.
[0291] In some embodiments, the SN may receive a successful report (e.g. successful report #3 as described in the embodiments of Figure 5) , e.g. from the UE or the MN. Successful report #3 may include successful report #1 and / or successful report #2. For example, successful report #3 may include at least one of the following:
[0292] (1) information #3;
[0293] (2) information #4;
[0294] (3) information #5; or
[0295] (4) information #6.
[0296] A specific example is described in Embodiment 2 as follows.
[0297] In some implementations of the method, the SN may transmit, to the UE or the MN, a configuration set (e.g. configuration set #3 as described in the embodiments of Figure 5) , and configuration set #3 may be for a PAC procedure or a CPAC procedure (i.e. a legacy PAC / CPAC procedure) . The PAC procedure or the CPAC procedure is initiated by a network node (e.g. node #3 as described in the embodiments of Figure 5) . For example, each of node #1 (which decides trigger condition (s) #1) and node #3 may be the MN or a SN. Configuration set #3 may include one or more trigger conditions of a SPR for the PAC procedure or the CPAC procedure.
[0298] In some implementations of the method, the SN may transmit, to the UE or the MN, information (e.g. information #7 as described in the embodiments of Figure 5) which indicates that one or more SPR configurations transmitted to the UE is configured for "which one of SCPAC #1 or the PAC procedure or the CPAC procedure. " For example, information #7 is included in an RRC reconfiguration message. The one or more SPR configurations may include configuration set #1 and / or configuration set #3.
[0299] In some implementations of the method, the SN may receive at least one of the following from the UE or the MN:
[0300] (1) a SPR (e.g. SPR #Aas described in the embodiments of Figure 5) ; and
[0301] (2) information (e.g. information #8 as described in the embodiments of Figure 5) related to SPR #A. Information #8 may indicate that SPR #A is generated for at least one of the following: SCPAC #1; the PAC procedure; or the CPAC procedure. For example, information #8 may include:
[0302] a) a cause value for generating SPR #A;
[0303] b) an explicit indication indicating "SPR #A is generated for which procedure" ;
[0304] c) an implicit indication indicating "SPR #A is generated for which procedure" ; and / or
[0305] d) an availability indication indicating "SPR #A is available for which procedure" .
[0306] In some implementations of the method, the SN may identify, based on information #8 or the stored UE context information, SPR #A is generated for one of the following: SCPAC #1; the PAC procedure; or the CPAC procedure. A specific example is described in Embodiment 3 as follows.
[0307] It should be noted that the method described in any of Figures 5-7 describes possible implementations, and that the operations and the steps may be rearranged or otherwise eliminated or modified and that other implementations are possible, without departing from the spirit and scope of the disclosure.
[0308] The following text describes specific embodiments of the flowcharts as shown and illustrated above, i.e. Embodiment 1, Embodiment 2, Embodiment 3 and Embodiment 4 as below.
[0309] Embodiment 1
[0310] Since a MN or SN initiated Subsequent CPAC procedure comprises an initial CPAC phase (i.e. an initial CPAC execution) and at least one following subsequent CPC phase (i.e. at least one following subsequent CPC execution) , Embodiment 1 aims to provide solutions to solve an issue of how does a network node configure one or more trigger conditions of a successful report (e.g. SPR, a newly introduced report or a newly named report) for an initial CPAC phase or at least one following subsequent CPC phase in a Subsequent CPAC procedure.
[0311] Embodiment 1 gives methods about how does a network node configure the following information:
[0312] (1) one or more trigger conditions of a successful report (e.g. SPR or a newly introduced report or a newly named report) for an initial CPAC phase or a following subsequent CPC phase in a MN initiated Subsequent CPAC procedure;
[0313] (2) one or more configurations related with the successful report (e.g. SPR or a newly introduced report or a newly named report) for a MN initiated Subsequent CPAC procedure;
[0314] (3) one or more trigger conditions of a successful report (e.g. SPR or a newly introduced report or a newly named report) for an initial CPAC phase or a following subsequent CPC phase in a SN initiated Subsequent CPAC procedure; and / or
[0315] (4) one or more configurations related with the successful report (e.g. SPR or a newly introduced report or a newly named report) for a SN initiated Subsequent CPAC procedure.
[0316] For example, in Embodiment 1, at least one T310 related trigger threshold or T312 related trigger threshold or T304 related trigger threshold may be configured as one or more configurations related with a successful report (e.g. SPR or a newly introduced report or a newly named report) for a MN initiated Subsequent CPAC procedure or a SN initiated Subsequent CPAC procedure.
[0317] Embodiment 1-1 (trigger condition for a MN initiated Subsequent CPAC procedure)
[0318] Embodiment 1-1 provide solutions about how to configure at least one T310 or T312 or T304 related trigger threshold as a trigger condition of a successful report (e.g. SPR or a newly introduced report or a newly named report) for a MN initiated Subsequent CPAC procedure as follows.
[0319] In Embodiment 1-1, a MN decides or generates at least one T310 or T312 related trigger threshold of an initial CPAC phase (or initial CPAC execution) of the MN initiated Subsequent CPAC procedure.
[0320] For at least one subsequent CPC phase (or following subsequent CPC execution) of the MN initiated Subsequent CPAC procedure, there may be following two options according to different embodiments, i.e. Option #1 and Option #2 of Embodiment 1-1.
[0321] (1) Option #1: a (candidate) target SN (i.e. a source SN of the subsequent CPC phase) may decide or generate at least one T310 or T312 related trigger threshold of the subsequent CPC phase (or following subsequent CPC execution) .
[0322] a) In an embodiment, to explicitly enable the MN to know that the (candidate) target SN (i.e. the source SN of subsequent CPC phase) decides or generates at least one T310 related trigger threshold, the (candidate) target SN (i.e. the source SN of the subsequent CPC phase) may send "an indication concerning that the (candidate) target SN (i.e. the source SN of the subsequent CPC phase) decides or generates at least one T310 related trigger threshold" to the MN.
[0323] b) In another embodiment, to explicitly enable the MN to know that the (candidate) target SN (i.e. the source SN of subsequent CPC phase) decides or generates at least one T312 related trigger threshold, the (candidate) target SN (i.e. the source SN of the subsequent CPC phase) may send "an indication concerning that the (candidate) target SN (i.e. the source SN of the subsequent CPC phase) decides or generates at least one T312 related trigger threshold" to the MN.
[0324] (2) Option #2: the MN may decide or generate at least one T310 or T312 related trigger threshold of any subsequent CPC phase (or following subsequent CPC execution) . In Option #2, there may be following two cases according to different embodiments, i.e. Case #1 and Case #2.
[0325] a) Case #1: at least one T310 related trigger threshold for each of at least one subsequent CPC phase (or at least one following subsequent CPC execution) may be common or different. If common (or same) , the common T310 related trigger threshold may be sent to the UE e.g. in a Reference SCG configuration. Optionally, in an embodiment, an indication concerning that at least one T310 related trigger threshold for each of at least one subsequent CPC phase (or at least one following subsequent CPC execution) is the same or common (or an indication concerning that the common T310 related trigger threshold is configured for each of at least one subsequent CPC phase (or at least one following subsequent CPC execution) ) may be sent to the UE. If different, separate T310 related trigger thresholds may be sent to the UE in each RRC reconfiguration message related with corresponding PSCell.
[0326] b) Case #2: at least one T312 related trigger threshold for each of at least one subsequent CPC phase (or at least one following subsequent CPC execution) may be common or different. If common (or same) , the common T312 related trigger threshold may be sent to the UE e.g. in a Reference SCG configuration. Optionally, in an embodiment, an indication concerning that at least one T312 related trigger threshold for each of at least one subsequent CPC phase (or at least one following subsequent CPC execution) is the same or common (or an indication concerning that the common T312 related trigger threshold is configured for each of at least one subsequent CPC phase (or at least one following subsequent CPC execution) ) may be sent to the UE. If different, separate T312 related trigger thresholds may be sent to the UE in each RRC reconfiguration message related with corresponding PSCell.
[0327] In Embodiment 1-1, in the MN initiated Subsequent CPAC procedure, the (candidate) target SN of the initial CPAC phase may decide or generate at least one T304 related trigger threshold of an initial CPAC phase (or initial CPAC execution) of a Subsequent CPAC procedure of the MN initiated Subsequent CPAC procedure.
[0328] In Embodiment 1-1, a (candidate) target SN of a subsequent CPC phase (or following subsequent CPC execution) may decide or generate at least one T304 related trigger threshold of the subsequent CPC phase (or following subsequent CPC execution) of the MN initiated Subsequent CPAC procedure.
[0329] In some embodiments, the T304 related trigger threshold for each subsequent CPC phase (or following subsequent CPC execution) may be common or different. If common (or same) , the common T304 related trigger threshold may be sent to the UE e.g. in a Reference SCG configuration message. Optionally, in an embodiment, an indication concerning that the T304 related trigger threshold for each subsequent CPC phase is the same or common (or an indication concerning that the common T304 related trigger threshold is configured for each subsequent CPC phase) may be sent to the UE via the MN. If different, separate T304 related trigger thresholds may be sent to the UE in each RRC reconfiguration message related with corresponding PSCell.
[0330] Embodiment 1-2 (trigger condition for a SN initiated Subsequent CPAC procedure)
[0331] Embodiment 1-2 provide solutions about how to configure at least one T310 or T312 or T304 related trigger threshold as a trigger condition of a successful report (e.g. SPR or a newly introduced report or a newly named report) for a SN initiated Subsequent CPAC procedure as follows.
[0332] In Embodiment 1-2, a source SN (i.e. a source SN of an initial CPAC phase) decides or generates at least one T310 or T312 related trigger threshold of an initial CPAC phase (or the initial CPAC execution) of the SN initiated Subsequent CPAC procedure.
[0333] For at least one subsequent CPC phase (or following subsequent CPC execution) of the SN initiated Subsequent CPAC procedure, there may be following two options according to different embodiments, i.e. Option #Aand Option #B of Embodiment 1-2.
[0334] (1) Option #A: a (candidate) target SN (i.e. a source SN of a subsequent CPC phase) may decide or generate at least one T310 or T312 related trigger threshold of the subsequent CPC phase (or following subsequent CPC execution) .
[0335] a) In an example, to explicitly enable a MN to know that the (candidate) target SN (i.e. the source SN of the subsequent CPC phase) decides or generates at least one T310 related trigger threshold, the (candidate) target SN (i.e. the source SN of the subsequent CPC phase) may send "an indication concerning that the (candidate) target SN (i.e. the source SN of the subsequent CPC phase) decides or generates at least one T310 related trigger threshold" to the MN.
[0336] b) In another example, to explicitly enable the MN to know that the (candidate) target SN (i.e. the source SN of the subsequent CPC phase) decides or generates at least one T312 related trigger threshold, the (candidate) target SN (i.e. the source SN of the subsequent CPC phase) may send "an indication concerning that the (candidate) target SN (i.e. the source SN of the subsequent CPC phase) decides or generates at least one T312 related trigger threshold" to the MN.
[0337] (2) Option #B: a source SN (i.e. a source SN of initial CPAC phase) may decide or generate at least one T310 or T312 related trigger threshold of any subsequent CPC phase (or following subsequent CPC execution) . In Option B, there may be following two cases according to different embodiments, i.e. Case #A and Case #B.
[0338] a) Case #A: at least one T310 related trigger threshold for each of at least one subsequent CPC phase (or at least one following subsequent CPC execution) may be common or different. If common (or same) , the common T310 related trigger threshold may be sent to the UE e.g. in a Reference SCG configuration. Optionally, an indication concerning that the T310 related trigger threshold for each of at least one subsequent CPC phase (or at least one following subsequent CPC execution) is the same or common (or an indication concerning that the common T310 related trigger threshold is configured for each of at least one subsequent CPC phase (or at least one following subsequent CPC execution) ) may be sent from a source SN (i.e. a source SN of the initial CPAC phase) to the UE directly, or the indication may be sent from the source SN (i.e. the source SN of the initial CPAC phase) to the MN firstly, and then sent from the MN to the UE. If different, separate T310 related trigger thresholds may be sent to the UE in each RRC reconfiguration message related with corresponding PSCell.
[0339] b) Case #B: T312 related trigger threshold for each of at least one subsequent CPC phase (or at least one following subsequent CPC execution) may be common or different. If common (or same) , the common T312 related trigger threshold may be sent to the UE e.g. in Reference SCG configuration. Optionally, an indication concerning that the T312 related trigger threshold for each of at least one subsequent CPC phase (or at least one following subsequent CPC execution) is the same or common (or an indication concerning that the common T312 related trigger threshold is configured for each of at least one subsequent CPC phase (or at least one following subsequent CPC execution) ) may be sent from a source SN (i.e. source SN of initial CPAC phase) to the UE directly, or the indication may be sent from a source SN (i.e. source SN of initial CPAC phase) to the MN firstly, and then from the MN to the UE. If different, separate T312 related trigger thresholds may be sent to the UE in each RRC reconfiguration message related with corresponding PSCell.
[0340] In Embodiment 1-2, in the SN initiated Subsequent CPAC procedure, the (candidate) target SN of initial CPAC phase may decide or generate at least one T304 related trigger threshold of initial CPAC phase (or initial CPAC execution) of the Subsequent CPAC procedure, and the (candidate) target SN of subsequent CPC phase (or following subsequent CPC execution) may decide or generate at least one T304 related trigger threshold of subsequent CPC phase (or following subsequent CPC execution) of the Subsequent CPAC procedure.
[0341] In some embodiments, the T304 related trigger threshold for each subsequent CPC phase (or following subsequent CPC execution) may be common or different. If common, the common T304 related trigger threshold may be sent to the UE e.g. in a reference SCG configuration message. Optionally, in an embodiment, an indication concerning that the T304 related trigger threshold for each subsequent CPC phase is the same or common (or an indication concerning that the common T304 related trigger threshold is configured for each subsequent CPC phase) may be sent to the UE directly or to the UE via the MN. If different, separate T304 related trigger thresholds may be sent to the UE in each RRC reconfiguration message related with corresponding PSCell.
[0342] Embodiment 2
[0343] Embodiment 2 aims to provide solutions to solve an issue that when a MN initiated Subsequent CPAC procedure and a SN initiated Subsequent CPAC procedure are configured to a UE simultaneously, how does the UE handle the received configuration (s) related with a successful report (e.g. SPR or a newly introduced report or a newly named report) .
[0344] For the case that MN initiated Subsequent CPAC procedure and SN initiated Subsequent CPAC procedure are configured to the UE simultaneously, configuration (s) related with successful report (e.g. SPR or a newly introduced report or a newly named report) for MN initiated Subsequent CPAC procedure and configuration (s) related with successful report (e.g. SPR or a newly introduced report or a newly named report) for SN initiated Subsequent CPAC procedure may be configured to the UE respectively.
[0345] In Embodiment 2, the UE may respectively store "the configuration (s) related with a successful report (e.g. SPR or a newly introduced report or a newly named report) for the MN initiated Subsequent CPAC procedure" and "the configuration (s) related with a successful report (e.g. SPR or a newly introduced report or a newly named report) for the SN initiated Subsequent CPAC procedure" .
[0346] In Embodiment 2, the behavior of the UE monitoring the configuration (s) related with successful report (e.g. SPR or a newly introduced report or a newly named report) are as below:
[0347] For an example of Embodiment 2, if the UE receives an indication concerning that a Subsequent CPAC procedure is MN-initiated (e.g. a MN configures an explicit or implicit indication concerning that the Subsequent CPAC procedure is initiated by the MN to the UE e.g. in an RRC reconfiguration message; in such a way, the UE may include an explicit or implicit indication concerning that the Subsequent CPAC procedure is initiated by the MN in the successful report) , or if the UE receives an indication concerning that a Subsequent CPAC procedure is not SN-initiated (e.g. the MN configures an explicit or implicit indication concerning that the Subsequent CPAC procedure is not initiated by a SN to the UE e.g. in an RRC reconfiguration message; in such a way, the UE may include an explicit or implicit indication concerning that the Subsequent CPAC procedure is not initiated by SN in the successful report) , or if the UE does not receive an indication concerning that a Subsequent CPAC procedure is SN-initiated, or if the UE does not receive an indication concerning that a Subsequent CPAC procedure is not MN-initiated, the UE may perform at least one of the following operations:
[0348] (1) the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of initial CPAC phase (or initial CPAC execution) configured by the node that initiated the Subsequent CPAC procedure i.e. the MN or the PCell in case of a MN initiated Subsequent CPAC procedure;
[0349] (2) the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of subsequent CPC phase (or following subsequent CPC execution) configured by (candidate) target SN or PSCell (i.e. source SN or PSCell of subsequent CPC phase) , if Option #1 in Embodiment 1-1 is adopted; or
[0350] (3) the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of subsequent CPC phase (or following subsequent CPC execution) configured by the node that initiated the Subsequent CPAC procedure i.e. the MN or the PCell in case of a MN initiated Subsequent CPAC procedure, if Option #2 in Embodiment 1-1 is adopted.
[0351] For another example of Embodiment 2, if the UE receives an indication concerning that a Subsequent CPAC procedure is SN-initiated (e.g. a MN or a SN configures an explicit or implicit indication concerning that the Subsequent CPAC procedure is initiated by a SN to the UE e.g. in an RRC reconfiguration message; in such a way, the UE may include an explicit or implicit indication concerning that the Subsequent CPAC procedure is initiated by a SN in the successful report) , or if the UE receives an indication concerning that a Subsequent CPAC procedure is not MN-initiated (e.g. the MN or the SN configures an explicit or implicit indication concerning that the Subsequent CPAC procedure is not initiated by a MN to the UE e.g. in an RRC reconfiguration message; in such a way, the UE may include an explicit or implicit indication concerning that the Subsequent CPAC procedure is not initiated by a MN in the successful report) , or if the UE does not receive an indication concerning that a Subsequent CPAC procedure is MN-initiated, or if the UE does not receive an indication concerning that a Subsequent CPAC procedure is not SN-initiated, the UE may perform at least one of the following operations:
[0352] (1) the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of the initial CPAC phase (or initial CPAC execution) configured by the node that initiated the Subsequent CPAC procedure i.e. the source SN or PSCell (i.e. the source SN or PSCell of initial CPAC phase) in case of a SN initiated Subsequent CPAC procedure;
[0353] (2) the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of the subsequent CPC phase (or following subsequent CPC execution) configured by the (candidate) target SN or PSCell (i.e. the source SN or PSCell of subsequent CPC phase) , if Option #A in Embodiment 1-2 is adopted; or
[0354] (3) the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of the subsequent CPC phase (or following subsequent CPC execution) configured by the node that initiated the Subsequent CPAC procedure i.e. the source SN or PSCell (i.e. the source SN or PSCell of initial CPAC phase) in case of a SN initiated Subsequent CPAC procedure, if Option #B in Embodiment 1-2 is adopted.
[0355] For another example of Embodiment 2, if the initial CPAC execution is performed due to an execution condition for the initial CPAC execution configured by the MN or the PCell is fulfilled, the UE may perform at least one of the following operations:
[0356] (1) the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of the initial CPAC phase (or initial CPAC execution) configured by the node that initiated the Subsequent CPAC procedure i.e. the MN or the PCell in case of a MN initiated Subsequent CPAC procedure;
[0357] (2) the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of the subsequent CPC phase (or following subsequent CPC execution) configured by (candidate) target SN or PSCell (i.e. source SN or PSCell of subsequent CPC phase) , if Option #1 in Embodiment 1-1 is adopted; or
[0358] (3) the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of the subsequent CPC phase (or following subsequent CPC execution) configured by the node that initiated the Subsequent CPAC procedure i.e. the MN or the PCell in case of a MN initiated Subsequent CPAC procedure, if Option #2 in Embodiment 1-1 is adopted.
[0359] For another example of Embodiment 2, if the initial CPAC execution is performed due to an execution condition for the initial CPAC execution configured by a source SN or PSCell (i.e. source SN or PSCell of initial CPAC phase) is fulfilled, the UE may perform at least one of the following operations:
[0360] (1) the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of the initial CPAC phase (or initial CPAC execution) configured by the node that initiated the Subsequent CPAC procedure i.e. a source SN or PSCell (i.e. source SN or PSCell of initial CPAC phase) in case of a SN initiated Subsequent CPAC procedure;
[0361] (2) the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of the subsequent CPC phase (or following subsequent CPC execution) configured by the (candidate) target SN or PSCell (i.e. the source SN or PSCell of subsequent CPC phase) , if Option #A in Embodiment 1-2 is adopted; or
[0362] (3) the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of the subsequent CPC phase (or following subsequent CPC execution) configured by the node that initiated the Subsequent CPAC procedure i.e. the source SN or PSCell (i.e. the source SN or PSCell of initial CPAC phase) in case of a SN initiated Subsequent CPAC procedure, if Option #B in Embodiment 1-2 is adopted.
[0363] For another example of Embodiment 2, if following execution of the subsequent CPC is performed due to execution condition for subsequent CPC phase (or following subsequent CPC execution) configured by (candidate) target SN or PSCell (i.e. source SN or PSCell of subsequent CPC phase) is fulfilled (e.g. if Option #1 in Embodiment 1-1 or Option #A in Embodiment 1-2 is adopted) , the UE only monitors the configuration (s) associated with T310 related trigger threshold and / or T312 related trigger threshold of subsequent CPC phase (or following subsequent CPC execution) configured by (candidate) target SN or PSCell (i.e. source SN or PSCell of subsequent CPC phase) .
[0364] For another example of Embodiment 2, the UE monitors all the received configuration (s) related with successful report (e.g. SPR or a newly introduced report or a newly named report) .
[0365] Embodiment 3
[0366] Embodiment 3 aims to provide solutions to solve an issue of how to enable correct forwarding of a successful report (e.g. SPR, a newly introduced report or a newly named report) at the network side especially for the case that legacy PAC or CPAC procedure and a Subsequent CPAC procedure are configured to a UE simultaneously, e.g. how does the network side identify whether the SPR is generated for a legacy PAC or CPAC procedure or for a Subsequent CPAC procedure.
[0367] In Embodiment 3, for the case that "a MN or SN initiated Subsequent CPAC procedure" and "a MN or SN initiated PAC or CPAC procedure" are both configured to a UE simultaneously, "configuration (s) related with a successful report (e.g. SPR or a newly introduced report or a newly named report) for the MN or SN initiated Subsequent CPAC procedure" and "configuration (s) related with SPR for the MN or SN initiated PAC or CPAC procedure" may be configured to the UE respectively.
[0368] In some embodiments, the UE may respectively store "the configuration (s) related with successful report (e.g. SPR or a newly introduced report or a newly named report) for the MN or SN initiated Subsequent CPAC procedure" and "the configuration (s) related with SPR for the MN or SN initiated PAC or CPAC procedure" .
[0369] In some embodiments, the UE only monitors the configuration (s) related to the corresponding procedure that executed or applied at the UE side. In one embodiment, if the UE executes legacy PAC procedure or applies RRC configuration (s) for legacy PAC procedure, the UE monitors the SPR configuration (s) configured for the legacy PAC procedure. In another embodiment, if the UE executes the legacy CPAC procedure or applies RRC configuration (s) for the legacy CPAC procedure, the UE monitors the SPR configuration (s) configured for the legacy CPAC procedure. In an additional embodiment, if the UE executes the Subsequent CPAC procedure or applies the RRC configuration (s) for the Subsequent CPAC procedure, the UE monitors the configuration (s) related with the successful report (e.g. SPR or a newly introduced report or a newly named report) for the Subsequent CPAC procedure.
[0370] In Embodiment 3, if SPR is totally reused for the Subsequent CPAC procedure (e.g. SPR is used to store or report the near-failure successful Subsequent CPAC procedure as legacy without any specific enhancements) , for example, for the case that a network node (e.g. a MN or a SN) configures the SPR configuration (s) to the UE prior to the network node (e.g. the MN or the SN) triggers or initiates or configures the Subsequent CPAC procedure or the legacy PAC or CPAC procedure, to enable the UE to understand which SPR configuration (s) to monitor, the UE may be indicated that the SPR configuration (s) is configured for the Subsequent CPAC procedure or for the legacy PAC or CPAC procedure. For example, the network node (e.g. the MN or the SN) may configure the UE that "the SPR configuration (s) is configured for the legacy PAC procedure" or "the SPR configuration (s) is configured for the legacy CPAC procedure" or "the SPR configuration (s) is configured for the Subsequent CPAC procedure, " e.g. in an RRC reconfiguration message. Then, the UE may only monitor the SPR configuration (s) related to the corresponding procedure that is executed or applied at the UE side. Further, the UE may include an indication, which indicates that the SPR is generated for the Subsequent CPAC procedure or for the legacy PAC procedure or for the legacy CPAC procedure, in the SPR.
[0371] In Embodiment 3, if SPR is totally reused for the Subsequent CPAC procedure (e.g. SPR is used to store or report the near-failure successful Subsequent CPAC procedure as legacy without any specific enhancements) , and Option #1 in Embodiment 1-1 or Option #A in Embodiment 1-2 is adopted, since a SPR forwarding mechanism for the legacy PAC or CPAC procedure and a SPR forwarding mechanism for the Subsequent CPAC procedure is different, to enable correct forwarding of the successful report at the network side, especially for the case that "a MN or SN initiated Subsequent CPAC procedure" and "a MN or SN initiated legacy PAC or CPAC procedure" are configured to the UE simultaneously, after receiving the successful report, the network node (e.g. the MN or source SN of initial CPAC execution) needs to identify whether the SPR is generated for the legacy PAC procedure or the legacy CPAC procedure or for the Subsequent CPAC procedure. For example, there may be following two alternatives according to different embodiments, i.e. Alt #1 and Alt #2.
[0372] Alt #1: (aUE-based solution) the UE may indicate to the network node about whether the SPR is generated for the legacy PAC procedure or the legacy CPAC procedure or for the Subsequent CPAC procedure.
[0373] (1) For one example, the UE may send "a cause value concerning that the SPR is for the PAC procedure or the CPAC procedure" or "a cause value concerning that the SPR is for the Subsequent CPAC procedure" , e.g. in the SPR.
[0374] (2) For another example, the UE may send "an explicit indication concerning that the SPR is for the PAC procedure or the CPAC procedure" or "an explicit indication concerning that the SPR is for the Subsequent CPAC procedure" , e.g. in the SPR or a UE information response message.
[0375] (3) For another example, the UE may send "an implicit indication concerning that the SPR is for the PAC procedure or the CPAC procedure” or “an implicit indication concerning that the SPR is for the Subsequent CPAC procedure" , e.g. in the SPR. For example, if the Subsequent CPAC related information is included in the SPR, the Subsequent CPAC related information is the implicit indication to indicate that the SPR is for the Subsequent CPAC procedure, if no Subsequent CPAC related information is included in the SPR, the SPR implicitly indicates that the SPR is for the legacy PAC procedure or the legacy CPAC procedure.
[0376] (4) For another example, if the UE stores the SPR for the legacy PAC procedure, the UE may send "an indication concerning SPR availability for the legacy PAC procedure" to the network node, e.g. via an RRC Reconfiguration complete message. If the UE stores the SPR for the legacy CPAC procedure, the UE may send "an indication concerning SPR availability for the legacy CPAC procedure" to the network node, e.g. via an RRC Reconfiguration complete message. If the UE stores the SPR for the Subsequent CPAC procedure, the UE may send "an indication concerning the SPR availability for the Subsequent CPAC procedure" to the network node, e.g. via RRC Reconfiguration complete message.
[0377] Alt #2: (anetwork-based solution) a network node (e.g. a MN, or a source SN of initial CPAC phase, or a source SN of subsequent CPC phase) identifies whether the SPR is generated for a legacy PAC procedure or a legacy CPAC procedure or for a Subsequent CPAC procedure by implementation, e.g. based on the stored UE context.
[0378] Embodiment 4 (aUE's context identification)
[0379] In a case of SCG failure occurring shortly in a target PSCell after a successful initial CPAC execution or a following subsequent CPC execution, since a UE releases one or more subsequent CPAC configurations after the successful initial CPAC execution or the following subsequent CPC execution, a network node configured subsequent CPAC configuration cannot be reported by the UE. Additionally, source a SN may have released the UE's context, e.g. including: the one or more subsequent CPAC configurations (e.g. which may contain the configuration of SCPAC candidate PSCell list, SCPAC execution condition (s) (e.g. including execution conditions for the initial CPAC execution and / or the following subsequent CPAC execution) , the MCG configuration (to be applied when CPAC execution is triggered) , the reference configuration for SCPAC (e.g. including MCG part of the reference configuration (if any) and / or SN (source or candidate) generated SCG part of the reference configuration (if any) ) , delta configuration which is on top of a reference configuration and the security update configuration) , when it receives SCPAC failure related information from MN.
[0380] Embodiment 4 aims to solve an issue for a SN initiated SCPAC that when a UE's context is released at a source SN side (e.g. source SN of initial CPAC phase) , how does the source SN identify the UE's context when receiving a SCG failure information report message.
[0381] In Embodiment 4, there may be following options according to different embodiments, i.e. Option #X, Option #Y and Option #Z.
[0382] Option #X: to include at least one subsequent CPAC configuration (e.g. which may contain the configuration of SCPAC candidate PSCell list, SCPAC execution condition (s) (e.g. including execution conditions for the initial CPAC execution and / or the following subsequent CPAC execution) , the MCG configuration (to be applied when CPAC execution is triggered) , the reference configuration for SCPAC (e.g. including MCG part of the reference configuration (if any) and / or SN (source or candidate) generated SCG part of the reference configuration (if any) ) , delta configuration which is on top of a reference configuration and the security update configuration) to the message (e.g. SCG FAILURE INFORMATION REPORT message) from a MN to a SN (e.g. the SN may be the last serving SN, or a source SN of an initial CPAC phase, or a source SN of a subsequent CPC phase, or a target SN of an initial CPAC phase, or a target SN of a subsequent CPC phase) .
[0383] Option #Y
[0384] In Option #Y, in case of a MN initiated subsequent CPAC procedure:
[0385] (1) A source SN of an initial CPAC phase may send the SN Mobility Information to a MN, e.g. via a SN Release Request Acknowledge message.
[0386] (2) A candidate SN, or a source SN of a subsequent CPC phase, or a target SN of an initial CPAC phase, or a target SN of a subsequent CPC phase may send the SN Mobility Information to the MN, e.g. in a SN Addition Request Acknowledge message.
[0387] (3) If received, the MN stores the SN Mobility Information of the source SN of the initial CPAC phase and / or the SN Mobility Information of the candidate SN (or the source SN of the subsequent CPC phase, or the target SN of the initial CPAC phase, or the target SN of the subsequent CPC phase) respectively;
[0388] (4) The MN sends the SN Mobility Information received from the source SN of the initial CPAC phase to the source SN of the initial CPAC phase, along with SCG failure related information (e.g. which is received from the UE) , e.g. via a SCG Failure Information Report message.
[0389] (5) The MN sends the SN Mobility Information received from the candidate SN (or the source SN of subsequent CPC phase, or the target SN of the initial CPAC phase, or the target SN of the subsequent CPC phase) to the candidate SN (or the source SN of the subsequent CPC phase, or the target SN of the initial CPAC phase, or the target SN of the subsequent CPC phase) , along with the SCG failure related information (e.g. which is received from the UE) , e.g. via the SCG Failure Information Report message.
[0390] In Option #Y, in case of a SN initiated subsequent CPAC procedure:
[0391] (1) A source SN of an initial CPAC phase may send the SN Mobility Information to a MN, e.g. via a SN Change Required message.
[0392] (2) A candidate SN, or a source SN of a subsequent CPC phase, or a target SN of the initial CPAC phase, or target SN of subsequent CPC phase may send the SN Mobility Information to MN, e.g. in SN Addition Request Acknowledge message.
[0393] (3) If received, the MN stores the SN Mobility Information of source SN of initial CPAC phase and / or SN Mobility Information of candidate SN (or source SN of subsequent CPC phase, or target SN of initial CPAC phase, or target SN of subsequent CPC phase) respectively.
[0394] (4) The MN sends the SN Mobility Information received from source SN of initial CPAC phase to the source SN of initial CPAC phase, along with SCG failure related information (e.g. which is received from the UE) , e.g. via SCG Failure Information Report message.
[0395] (5) The MN sends the SN Mobility Information received from candidate SN (or source SN of subsequent CPC phase, or target SN of initial CPAC phase, or target SN of subsequent CPC phase) to the candidate SN (or source SN of subsequent CPC phase, or target SN of initial CPAC phase, or target SN of subsequent CPC phase) , along with SCG failure related information (e.g. which is received from the UE) , e.g. via SCG Failure Information Report message.
[0396] Option #Z
[0397] In Option #Z, in case of a MN initiated subsequent CPAC procedure:
[0398] (1) A source SN of an initial CPAC phase may send the SN Mobility Information to a MN, e.g. via a SN Release Request Acknowledge message.
[0399] (2) A candidate SN, or a source SN of a subsequent CPC phase, or a target SN of the initial CPAC phase, or a target SN of the subsequent CPC phase may send the SN Mobility Information to the MN, e.g. in a SN Addition Request Acknowledge message.
[0400] (3) If received, the MN stores the SN Mobility Information of a source SN of an initial CPAC phase and / or the SN Mobility Information of a candidate SN (or a source SN of the subsequent CPC phase, or a target SN of the initial CPAC phase, or a target SN of the subsequent CPC phase) respectively, and sends at least one of these two sets of SN Mobility Information to the UE, respectively. Optionally, the MN may generate its Mobility Information, and then sends it to the UE.
[0401] (4) The UE sends at least one of the SN Mobility Information of the source SN of the initial CPAC phase, the SN Mobility Information of the candidate SN (or the source SN of the subsequent CPC phase, or the target SN of the initial CPAC phase, or the target SN of the subsequent CPC phase) and the Mobility Information of MN to the MN, e.g. in the SCG failure information message.
[0402] (5) If needed, the MN sends the received information included in the SCG failure information message to the corresponding SN e.g. the source SN of the initial CPAC phase, or the candidate SN or the source SN of the subsequent CPC phase, or the target SN of the initial CPAC phase, or the target SN of the subsequent CPC phase.
[0403] In Option #Z, in case of a SN initiated subsequent CPAC procedure:
[0404] (1) A source SN of an initial CPAC phase may send the SN Mobility Information to a MN, e.g. via a SN Change Required message.
[0405] (2) A candidate SN, or a source SN of a subsequent CPC phase, or a target SN of the initial CPAC phase, or a target SN of the subsequent CPC phase may send the SN Mobility Information to the MN, e.g. in a SN Addition Request Acknowledge message.
[0406] (3) If received, the MN stores the SN Mobility Information of the source SN of the initial CPAC phase and / or the SN Mobility Information of the candidate SN (or the source SN of the subsequent CPC phase, or the target SN of the initial CPAC phase, or the target SN of the subsequent CPC phase) respectively, and sends at least one of these two sets of SN Mobility Information to the UE, respectively. Optionally, the MN may generate its Mobility Information, and then sends it to the UE.
[0407] (4) A UE sends at least one of the SN Mobility Information of the source SN of the initial CPAC phase, the SN Mobility Information of the candidate SN (or the source SN of the subsequent CPC phase, or the target SN of the initial CPAC phase, or the target SN of the subsequent CPC phase) and the Mobility Information of the MN to the MN, e.g. in the SCG failure information message.
[0408] (5) If needed, the MN sends the received information included in the SCG failure information message to the corresponding SN e.g. the source SN of the initial CPAC phase, or the candidate SN or the source SN of the subsequent CPC phase, or the target SN of the initial CPAC phase, or the target SN of the subsequent CPC phase.
[0409] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A user equipment (UE) , comprising:at least one memory; andat least one processor coupled to the at least one memory and configured to cause the UE to:receive a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one first trigger condition is decided by a first network node; andstore the first configuration set.2.The UE of Claim 1, wherein the first configuration further includes at least one second trigger condition of the first successful report for at least one subsequent conditional PSCell change (CPC) phase following the initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one second trigger condition is decided by:the first network node; ora source secondary node (SN) of anyone of the at least one subsequent CPC phase.3.The UE of Claim 1, wherein the first configuration set further includes at least one third trigger condition of the first successful report for at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one third trigger condition is decided by a target SN of anyone of the at least one subsequent CPC phase.4.The UE of any of Claims 1-3, wherein the at least one first trigger condition includes at least one of the following:one T310 related trigger threshold for the initial CPAC phase of the first subsequent CPAC procedure;one T312 related trigger threshold for the initial CPAC phase of the first subsequent CPAC procedure; orat least one T304 related trigger threshold for the initial CPAC phase of the first subsequent CPAC procedure;wherein the at least one second trigger condition includes at least one of the following:at least one T310 related trigger threshold for the at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure; orat least one T312 related trigger threshold for the at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure; andwherein the at least one third trigger condition includes at least one T304 related trigger threshold for the at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure.5.The UE of Claim 1, wherein the at least one processor is configured to cause the UE to:receive a second configuration set for a second subsequent CPAC procedure, wherein the second subsequent CPAC procedure is initiated by a second network node, wherein the first network node is one of a master node (MN) or a secondary node (SN) , wherein the second network node is another one of the MN or the SN, and wherein the second configuration set includes one or more trigger conditions of a second successful report for the second subsequent CPAC procedure; andstore the second configuration set.6.The UE of Claim 5, wherein a third subsequent CPAC procedure to be executed by the UE is the first subsequent CPAC procedure or the second subsequent CPAC procedure, and wherein if the third subsequent CPAC procedure is initiated by the MN or if the third subsequent CPAC procedure is not initiated by the SN or if an execution condition of an initial CPAC phase of the third subsequent CPAC procedure is configured by the MN and is fulfilled, the at least one processor is configured to cause the UE to:monitor a set of configurations associated with one or more trigger conditions of successful report for the initial CPAC phase of the third subsequent CPAC procedure that is configured by the MN;monitor a set of configurations associated with one or more trigger conditions of successful report for at least one subsequent CPC phase of the third subsequent CPAC procedure that is configured by a source SN of anyone of the at least one subsequent CPC phase of the third subsequent CPAC procedure; ormonitor a set of configurations associated with one or more trigger conditions of successful report for the at least one subsequent CPC phase of the third subsequent CPAC procedure that is configured by the MN.7.The UE of Claim 5, wherein a third subsequent CPAC procedure to be executed by the UE is the first subsequent CPAC procedure or the second subsequent CPAC procedure, and wherein if the third subsequent CPAC procedure is initiated by the SN or if the third subsequent CPAC procedure is not initiated by the MN or if an execution condition of an initial CPAC phase of the third subsequent CPAC procedure is configured by the SN and is fulfilled, the at least one processor is configured to cause the UE to:monitor a set of configurations associated with one or more trigger conditions of successful report for the initial CPAC phase of the third subsequent CPAC procedure that is configured by the SN, wherein the SN is a source SN of the initial CPAC phase of the third subsequent CPAC procedure;monitor a set of configurations associated with one or more trigger conditions of successful report for at least one subsequent CPC phase of the third subsequent CPAC procedure that is configured by a source SN of anyone of the at least one subsequent CPC phase of the third subsequent CPAC procedure; ormonitor a set of configurations associated with one or more trigger conditions of successful report for the at least one subsequent CPC phase of the third subsequent CPAC procedure that is configured by the source SN of the initial CPAC phase of the third subsequent CPAC procedure.8.The UE of Claim 6 or Claim 7, wherein the at least one processor is configured to cause the UE to receive at least one of the following:third information indicating that the third subsequent CPAC procedure is initiated by the MN;fourth information indicating that the third subsequent CPAC procedure is not initiated by the MN;fifth information indicating that the third subsequent CPAC procedure is initiated by the SN; orsixth information indicating that the third subsequent CPAC procedure is not initiated by the SN.9.The UE of Claim 8, wherein the at least one processor is configured to cause the UE to:generate a third successful report of the third subsequent CPAC procedure in response to satisfaction of one or more trigger conditions within the set of configurations associated with the one or more trigger conditions monitored by the UE, wherein the third successful report includes at least one of the first successful report or the second successful report; and wherein the third successful report includes at least one of the following:the third information;the fourth information;the fifth information; orthe sixth information; andtransmit the third successful report.10.The UE of Claim 1, wherein the at least one processor is configured to cause the UE to:receive a third configuration set for a PSCell addition or change (PAC) procedure or a CPAC procedure, wherein the PAC procedure or the CPAC procedure is initiated by a third network node, wherein each of the first network node and the third network node is one of a master node (MN) or a secondary node (SN) , and wherein the third configuration set includes one or more trigger conditions of a successful primary secondary cell (PSCell) addition or change report (SPR) for the PAC procedure or the CPAC procedure; andstore the third configuration set.11.The UE of Claim 10, wherein the at least one processor is configured to cause the UE to:monitor the third configuration set for the PAC procedure, if the PAC procedure is executed at the UE;monitor the third configuration set for the CPAC procedure, if the CPAC procedure is executed at the UE; ormonitor the first configuration set for the first subsequent CPAC procedure, if the first subsequent CPAC procedure is executed at the UE.12.The UE of Claim 10, wherein if the first successful report is a first SPR, the at least one processor is configured to cause the UE to receive seventh information indicating that one or more SPR configurations received by the UE is configured for which one of the first subsequent CPAC procedure or the PAC procedure or the CPAC procedure, wherein the one or more SPR configurations include at least one of the first configuration set or the third configuration set.13.The UE of Claim 12, wherein the at least one processor is configured to cause the UE to transmit at least one of the following:a SPR; andeighth information indicating that the SPR is generated for at least one of the following:the first subsequent CPAC procedure;the PAC procedure; orthe CPAC procedure.14.A master node (MN) , comprising:at least one memory; andat least one processor coupled to the at least one memory and configured to cause the MN to:obtain a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one first trigger condition is decided by a first network node; andtransmit the first configuration set to a user equipment (UE) .15.The MN of Claim 14, wherein the at least one processor is configured to cause the MN to:generate the first configuration set; orreceive the first configuration set from a secondary node (SN) .16.The MN of Claim 14, wherein the first configuration set further includes at least one third trigger condition of the first successful report for at least one subsequent CPC phase following the initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one third trigger condition is decided by a target SN of anyone of the at least one subsequent CPC phase.17.A secondary node (SN) , comprising:at least one memory; andat least one processor coupled to the at least one memory and configured to cause the SN to:generate a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure; andtransmit the first configuration set.18.The SN of Claim 17, wherein the first configuration set further includes at least one second trigger condition of the first successful report for at least one subsequent conditional PSCell change (CPC) phase following the initial CPAC phase of the first subsequent CPAC procedure, wherein the at least one second trigger condition is decided by the SN, and wherein the SN is a source SN of anyone of the at least one subsequent CPC phase.19.The SN of Claim 17, wherein the at least one processor is configured to cause the SN to transmit a second configuration set for a second subsequent CPAC procedure, wherein the first subsequent CPAC procedure is initiated by a first network node, wherein the second subsequent CPAC procedure is initiated by a second network node, wherein the first network node is one of a master node (MN) or the SN, wherein the second network node is another one of the MN or the SN, and wherein the second configuration set includes one or more trigger conditions of a second successful report for the second subsequent CPAC procedure.20.A processor for wireless communication, comprising:at least one controller coupled with at least one memory and configured to cause the processor to:receive a first configuration set for a first subsequent conditional primary secondary cell group cell (PSCell) addition or change (CPAC) procedure, wherein the first configuration set includes at least one first trigger condition of a first successful report for an initial CPAC phase of the first subsequent CPAC procedure, and wherein the at least one first trigger condition is decided by a first network node; andstore the first configuration set.
Citation Information
Patent Citations
Conditional primary secondary cell change configuration within a conditional cell addition or change configuration
US20240163739A1
Methods and apparatuses for MRO for subsequent CPAC procedure
WO2024082744A1
Conditional mobility for wireless communication devices
WO2024113500A1