Methods and apparatus for allowing connection release after status message from network
By maintaining a timer in UE devices to manage the release of the N1 NAS signaling connection after receiving status or notification messages, the issue of unnecessary power consumption and procedure interruptions in current 3GPP specifications is addressed, ensuring efficient and reliable network operations.
Patent Information
- Application Number
- PCT/CN2024/093575
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-07-25
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-30
AI Technical Summary
Current 3GPP specifications result in unnecessary power consumption by UE devices due to the inability to release the N1 NAS signaling connection after receiving a 5GMM status message, which can interrupt ongoing procedures and lead to network-initiated notification failures.
Implementing methods in UE devices to maintain a timer (e.g., T3540 timer) that allows the network to release the N1 NAS signaling connection, while keeping the timer running upon receipt of specific network messages, such as 5GMM status messages or notification messages, to manage connection release effectively.
This approach reduces unnecessary power consumption in UE devices, prevents interruptions in ongoing procedures, and ensures successful network-initiated notification procedures by allowing controlled release of the N1 NAS signaling connection.
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Figure CN2024093575_30012025_PF_FP_ABST
Abstract
Description
METHODS AND APPARATUS FOR ALLOWING CONNECTION RELEASE AFTER STATUS MESSAGE FROM NETWORK
[0001] CROSS REFERENCE TO RELATED PATENT APPLICATION (S)
[0002] The present disclosure is part of a non-provisional application claiming the priority benefit of Indian Patent Application Nos. 202321049852 and 202321050156, filed 24 July 2023 and 25 July 2023, respectively, the contents of which herein being incorporated by reference in their entirety.TECHNICAL FIELD
[0003] The present disclosure is generally related to mobile communications and, more particularly, to allowing connection release after reception of a status message from a network.BACKGROUND
[0004] In wireless communications such as mobile communications under the current 3rd Generation Partnership Project (3GPP) specification, the purpose of the 5th Generation Mobility Management (5GMM) status procedure is to report, at any time, in a 5GMM STATUS message certain error conditions detected upon receipt of 5GMM protocol data in the Access and Mobility Management Function (AMF) or in a user equipment (UE) . The 5GMM STATUS message can be sent by both the AMF and the UE. To allow the network to release the N1 non-access stratum (NAS) signaling connection, the UE needs to start a T3540 timer.
[0005] When the T3540 timer is running and the 5GMM status message is received, the T3540 timer will be stopped and NAS signaling connection will never be released until the network releases the connection. This tends to result in unnecessary power consumption by the UE, which is especially undesirable for battery-powered UEs. As an example scenario, after a registration procedure, a UE is to start the T3540 timer and send a registration complete message to the network. However, under an erroneous condition at the network side and / or if the network cannot handle or decode the registration complete message, the network would use a 5GMM status message to notify the UE. Yet, the UE would not stop the T3540 timer upon reception of the 5GMM status message since there is no response for this message. Accordingly, further power consumption would be incurred by the UE.
[0006] Moreover, in order to allow the network to release the N1 NAS signaling connection, the UE needs to start the T3540 timer. Under the current 3GPP specification, a notification procedure is used by the network to request the UE (e.g., by sending a notification message over a 3GPP access) to reestablish user-plane resources of protocol data unit (PDU) session (s) associated with a non-3GPP access over the 3GPP access or to deliver 5G Session Management (5GSM) downlink signaling messages associated with the non-3GPP access over the 3GPP access when the UE is in a 5GMM-IDLE mode over the non-3GPP access and in a 5GMM-CONNECTED mode over the 3GPP access. The notification message is sent from the network to the UE via the 3GPP access with access type indicating non-3GPP access. Upon reception of the notification message, the UE is to initiate a service request procedure over the 3GPP access. When the T3540 timer is running and the notification message is received, the UE will not stop T3540 timer. However, if T3540 timer is not stopped, the N1 NAS signaling connection would be released. Undesirably, this would interrupt an ongoing notification procedure and the network-initiated notification procedure would fail.
[0007] Therefore, there is a need for solutions of allowing connection release by a UE after reception of a status message from a network.SUMMARY
[0008] The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce concepts, highlights, benefits, and advantages of the novel and non-obvious techniques described herein. Select implementations are further described below in the detailed description. Thus, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended for use in determining the scope of the claimed subject matter.
[0009] An objective of the present disclosure is to propose solutions or schemes that address the issue (s) described herein. More specifically, various schemes proposed in the present disclosure are believed to provide solutions pertaining to allowing connection release by a UE after reception of a status message from a network. It is believed that implementations of one or more of the schemes proposed herein may address or otherwise alleviate the issues described above.
[0010] In one aspect, a method may involve a UE maintaining a timer which is for allowing a network to release an N1 non-access stratum (NAS) signaling connection. The method may also involve the UE receiving a message from the network. The method may further involve the UE keeping the timer running upon receipt of the message.
[0011] In another aspect, a method may involve a UE receiving a message from a network. The method may also involve the UE acting with respect to a timer upon receipt of the message.
[0012] In another aspect, an apparatus implementable in a UE may include a transceiver configured to communicate wirelessly and a processor coupled to the transceiver. The processor may maintain a timer which is for allowing a network to release an N1 NAS signaling connection. The processor may also receive a message from a network. Upon receipt of the message, the processor may keep the timer running.
[0013] It is noteworthy that, although the description provided herein may be in the context of certain radio access technologies, networks, and network topologies such as 5th Generation (5G) / New Radio (NR) / Beyond Fifth-Generation (B5G) mobile communications, the proposed concepts, schemes and any variation (s) / derivative (s) thereof may be implemented in, for and by other types of radio access technologies, networks and network topologies such as, for example and without limitation, 4th Generation (4G) / Long-Term Evolution (LTE) , LTE-Advanced, LTE-Advanced Pro, Internet-of-Things (IoT) , Narrow Band Internet of Things (NB-IoT) , Industrial Internet of Things (IIoT) , vehicle-to-everything (V2X) , and non-terrestrial network (NTN) communications. Thus, the scope of the present disclosure is not limited to the examples described herein.BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of the present disclosure. The drawings illustrate implementations of the disclosure and, together with the description, serve to explain the principles of the disclosure. It is appreciable that the drawings are not necessarily in scale as some components may be shown to be out of proportion than the size in actual implementation in order to clearly illustrate the concept of the present disclosure.
[0015] FIG. 1 is a diagram of an example network environment in which various solutions and schemes in accordance with the present disclosure may be implemented.
[0016] FIG. 2 is a block diagram of an example communication system in accordance with an implementation of the present disclosure.
[0017] FIG. 3 is a flowchart of a second example process in accordance with an implementation of the present disclosure.
[0018] FIG. 4 is a flowchart of a second example process in accordance with an implementation of the present disclosure.
[0019] DETAILED DESCRIPTION OF PREFERRED IMPLEMENTATIONS
[0020] Detailed embodiments and implementations of the claimed subject matters are disclosed herein. However, it shall be understood that the disclosed embodiments and implementations are merely illustrative of the claimed subject matters which may be embodied in various forms. The present disclosure may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments and implementations set forth herein. Rather, these exemplary embodiments and implementations are provided so that description of the present disclosure is thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. In the description below, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations.
[0021] Overview
[0022] Implementations in accordance with the present disclosure relate to various techniques, methods, schemes and / or solutions pertaining to allowing connection release by a UE after reception of a status message from a network. According to the present disclosure, a number of possible solutions may be implemented separately or jointly. That is, although these possible solutions may be described below separately, two or more of these possible solutions may be implemented in one combination or another.
[0023] FIG. 1 illustrates an example network environment 100 in which various solutions and schemes in accordance with the present disclosure may be implemented. FIG. 2 ~ FIG. 4 illustrate examples of implementation of various proposed schemes in network environment 100 in accordance with the present disclosure. The following description of various proposed schemes is provided with reference to FIG. 1 ~ FIG. 4.
[0024] Referring to FIG. 1, network environment 100 may involve a UE 110, such as a mobile device or smartphone, in wireless communication with a wireless network 120 as part of a communication network. The wireless network 120 may be a public land mobile network (PLMN) including 5G / NR domain and 4G / LTE domain. UE 110 may initially be in wireless communication with wireless network 120 via a base station or network node 125 (e.g., an eNB, gNB or transmit-receive point (TRP) ) . In network environment 100, UE 110 and the wireless network 120 may implement various schemes pertaining to allowing connection release by a UE after reception of a status message from a network in accordance with the present disclosure, as described herein.
[0025] It is noteworthy that, while the various proposed schemes may be individually or separately described below, in actual implementations some or all of the proposed schemes may be utilized or otherwise implemented jointly. Of course, each of the proposed schemes may be utilized or otherwise implemented individually or separately. Moreover, as used herein, a lower layer may refer to a layer in the 5GMM protocol stack that is lower than the radio resource control (RRC) layer, such as a packet data convergence protocol (PDCP) layer, a radio control link (RLC) layer, a medium access control (MAC) layer, a physical (PHY) layer, or so forth.
[0026] Under a first proposed scheme in accordance with the present disclosure, upon receipt of a message of a network-initiated 5GMM common procedure (e.g., a 5GMM status message) from wireless network 120 via network node 125, UE 110 may perform one or more operations individually or in any combination thereof. For instance, UE 110 may not stop T3540 timer (e.g., to allow wireless network 120 to release the N1 NAS signaling connection) . Alternatively, or additionally, UE 110 may keep T3540 timer running (e.g., to allow wireless network 120 to release the N1 NAS signaling connection) . Alternatively, or additionally, UE 110 may locally release a connection (e.g., N1 NAS signaling connection with wireless network 120) upon expiry of T3540 timer. In other words, under the first proposed scheme, upon receipt or reception of a message of a network-initiated 5GMM common procedure except a CONFIGURATION UPDATE COMMAND message, without UE 110 requesting acknowledgement from wireless network 120 and without UE 110 requesting a 5GMM status procedure, UE 110 may stop T3540 timer and may respond to the network-initiated 5GMM common procedure via an existing N1 NAS signaling connection with wireless network 120.
[0027] Under a second proposed scheme in accordance with the present disclosure, when T3540 timer is running and a notification message is received by UE 110 from wireless network 120, UE 110 may perform one or more operations individually or in any combination thereof. For instance, UE 110 may stop T3540 timer (e.g., to keep the existing N1 NAS signaling connection from being released) . Alternatively, or additionally, UE 110 may send an uplink signaling to wireless network 120 via the existing N1 NAS signaling connection. Alternatively, or additionally, UE 110 may initiate a service request procedure over a 3GPP access via the existing N1 NAS signaling connection. That is, under the second proposed scheme, upon receipt or reception of a NOTIFICATION message (e.g., as specified in subclause 5.6.3.1 case a) of the current 3GPP specification) , UE 110 may stop T3540 timer and send an uplink signaling to wireless network 120 via an existing N1 NAS signaling connection.
[0028] Illustrative Implementations
[0029] FIG. 2 illustrates an example communication system 200 having at least an example apparatus 210 and an example apparatus 220 in accordance with an implementation of the present disclosure. Each of apparatus 210 and apparatus 220 may perform various functions to implement schemes, techniques, processes and methods described herein pertaining to allowing connection release by a UE after reception of a status message from a network, including the various schemes described above with respect to various proposed designs, concepts, schemes, systems and methods described above, including network environment 100, as well as processes described below.
[0030] Each of apparatus 210 and apparatus 220 may be a part of an electronic apparatus, which may be a network apparatus or a UE (e.g., UE 110) , such as a portable or mobile apparatus, a wearable apparatus, a vehicular device or a vehicle, a wireless communication apparatus or a computing apparatus. For instance, each of apparatus 210 and apparatus 220 may be implemented in a smartphone, a smart watch, a personal digital assistant, an electronic control unit (ECU) in a vehicle, a digital camera, or a computing equipment such as a tablet computer, a laptop computer or a notebook computer. Each of apparatus 210 and apparatus 220 may also be a part of a machine type apparatus, which may be an IoT apparatus such as an immobile or a stationary apparatus, a home apparatus, a roadside unit (RSU) , a wire communication apparatus or a computing apparatus. For instance, each of apparatus 210 and apparatus 220 may be implemented in a smart thermostat, a smart fridge, a smart door lock, a wireless speaker or a home control center. When implemented in or as a network apparatus, apparatus 210 and / or apparatus 220 may be implemented in an eNodeB in an LTE, LTE-Advanced or LTE-Advanced Pro network or in a gNB or TRP in a 5G network, an NR network, or an IoT network.
[0031] In some implementations, each of apparatus 210 and apparatus 220 may be implemented in the form of one or more integrated-circuit (IC) chips such as, for example and without limitation, one or more single-core processors, one or more multi-core processors, one or more complex-instruction-set-computing (CISC) processors, or one or more reduced-instruction-set-computing (RISC) processors. In the various schemes described above, each of apparatus 210 and apparatus 220 may be implemented in or as a network apparatus or a UE. Each of apparatus 210 and apparatus 220 may include at least some of those components shown in FIG. 2 such as a processor 212 and a processor 222, respectively, for example. Each of apparatus 210 and apparatus 220 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and / or user interface device) , and, thus, such component (s) of apparatus 210 and apparatus 220 are neither shown in FIG. 2 nor described below in the interest of simplicity and brevity.
[0032] In one aspect, each of processor 212 and processor 222 may be implemented in the form of one or more single-core processors, one or more multi-core processors, or one or more CISC or RISC processors. That is, even though a singular term “aprocessor” is used herein to refer to processor 212 and processor 222, each of processor 212 and processor 222 may include multiple processors in some implementations and a single processor in other implementations in accordance with the present disclosure. In another aspect, each of processor 212 and processor 222 may be implemented in the form of hardware (and, optionally, firmware) with electronic components including, for example and without limitation, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors and / or one or more varactors that are configured and arranged to achieve specific purposes in accordance with the present disclosure. In other words, in at least some implementations, each of processor 212 and processor 222 is a special-purpose machine specifically designed, arranged, and configured to perform specific tasks including those pertaining to allowing connection release by a UE after reception of a status message from a network in accordance with various implementations of the present disclosure.
[0033] In some implementations, apparatus 210 may also include a transceiver 216 coupled to processor 212. Transceiver 216 may be capable of wirelessly transmitting and receiving data. In some implementations, transceiver 216 may be capable of wirelessly communicating with different types of wireless networks of different radio access technologies (RATs) . In some implementations, transceiver 216 may be equipped with a plurality of antenna ports (not shown) such as, for example, four antenna ports. That is, transceiver 216 may be equipped with multiple transmit antennas and multiple receive antennas for multiple-input multiple-output (MIMO) wireless communications. In some implementations, apparatus 220 may also include a transceiver 226 coupled to processor 222. Transceiver 226 may include a transceiver capable of wirelessly transmitting and receiving data. In some implementations, transceiver 226 may be capable of wirelessly communicating with different types of UEs / wireless networks of different RATs. In some implementations, transceiver 226 may be equipped with a plurality of antenna ports (not shown) such as, for example, four antenna ports. That is, transceiver 226 may be equipped with multiple transmit antennas and multiple receive antennas for MIMO wireless communications.
[0034] In some implementations, apparatus 210 may further include a memory 214 coupled to processor 212 and capable of being accessed by processor 212 and storing data therein. In some implementations, apparatus 220 may further include a memory 224 coupled to processor 222 and capable of being accessed by processor 222 and storing data therein. Each of memory 214 and memory 224 may include a type of random-access memory (RAM) such as dynamic RAM (DRAM) , static RAM (SRAM) , thyristor RAM (T-RAM) and / or zero-capacitor RAM (Z-RAM) . Alternatively, or additionally, each of memory 214 and memory 224 may include a type of read-only memory (ROM) such as mask ROM, programmable ROM (PROM) , erasable programmable ROM (EPROM) and / or electrically erasable programmable ROM (EEPROM) . Alternatively, or additionally, each of memory 214 and memory 224 may include a type of non-volatile random-access memory (NVRAM) such as flash memory, solid-state memory, ferroelectric RAM (FeRAM) , magnetoresistive RAM (MRAM) and / or phase-change memory.
[0035] Each of apparatus 210 and apparatus 220 may be a communication entity capable of communicating with each other using various proposed schemes in accordance with the present disclosure. For illustrative purposes and without limitation, a description of capabilities of apparatus 210, as a UE (e.g., UE 110) , and apparatus 220, as a network node (e.g., network node 125) of a network (e.g., wireless network 120 as a 5G / NR mobile network) , is provided below in the context of example processes 300 and 400.
[0036] Illustrative Processes
[0037] FIG. 3 illustrates an example process 300 in accordance with an implementation of the present disclosure. Process 300 may represent an aspect of implementing various proposed designs, concepts, schemes, systems and methods described above. More specifically, process 300 may represent an aspect of the proposed concepts and schemes pertaining to allowing connection release by a UE after reception of a status message from a network in accordance with the present disclosure. Process 300 may include one or more operations, actions, or functions as illustrated by one or more of blocks 310, 320 and 330. Although illustrated as discrete blocks, various blocks of process 300 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks / sub-blocks of process 300 may be executed in the order shown in FIG. 3 or, alternatively, in a different order. Furthermore, one or more of the blocks / sub-blocks of process 300 may be executed repeatedly or iteratively. Process 300 may be implemented by or in apparatus 210 and apparatus 220 as well as any variations thereof. Solely for illustrative purposes and without limiting the scope, process 300 is described below in the context of apparatus 210 as a UE (e.g., UE 110) and apparatus 220 as a communication entity such as a network node or base station (e.g., network node 125) of a network (e.g., wireless network 120) . Process 300 may begin at block 310.
[0038] At 310, process 300 may involve processor 212 maintaining a timer which is for allowing a network to release an N1 NAS signaling connection. Process 300 may proceed from 310 to 320.
[0039] At 320, process 300 may involve processor 212 receiving, via transceiver 216, a message from the network (e.g., from wireless network 120 via apparatus 220 as network node 125) . Process 300 may proceed from 310 to 320.
[0040] At 330, process 300 may involve processor 212 keeping the timer running upon receipt of the message.
[0041] In some implementations, the timer may be a T3540 timer.
[0042] In some implementations, the message may include a 5GMM status message.
[0043] In some implementations, in receiving the message, process 300 may involve processor 212 receiving a message of a network-initiated 5GMM common procedure except a CONFIGURATION UPDATE COMMAND message.
[0044] In some implementations, process 300 may also involve processor 212 locally releasing the N1 NAS signaling connection.
[0045] In some implementations, in keeping the timer running, process 300 may also involve processor 212 keeping the timer running without requesting an acknowledgement from the network and without requesting a 5GMM status procedure.
[0046] In some implementations, process 300 may also involve processor 212, upon receipt of a message of a network-initiated 5GMM common procedure except a CONFIGURATION UPDATE COMMAND message, and without requesting an acknowledgement from the network and without requesting a 5GMM status procedure: (a) stopping a timer T3540; and (b) responding to the network-initiated 5GMM common procedure via the N1 NAS signaling connection.
[0047] FIG. 4 illustrates an example process 400 in accordance with an implementation of the present disclosure. Process 400 may represent an aspect of implementing various proposed designs, concepts, schemes, systems and methods described above. More specifically, process 400 may represent an aspect of the proposed concepts and schemes pertaining to allowing connection release by a UE after reception of a status message from a network in accordance with the present disclosure. Process 400 may include one or more operations, actions, or functions as illustrated by one or more of blocks 410 and 420. Although illustrated as discrete blocks, various blocks of process 400 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks / sub-blocks of process 400 may be executed in the order shown in FIG. 4 or, alternatively, in a different order. Furthermore, one or more of the blocks / sub-blocks of process 400 may be executed repeatedly or iteratively. Process 400 may be implemented by or in apparatus 210 and apparatus 220 as well as any variations thereof. Solely for illustrative purposes and without limiting the scope, process 400 is described below in the context of apparatus 210 as a UE (e.g., UE 110) and apparatus 220 as a communication entity such as a network node or base station (e.g., network node 125) of a network (e.g., wireless network 120) . Process 400 may begin at block 410.
[0048] At 410, process 400 may involve processor 212 receiving, via transceiver 216, a message from a network (e.g., from wireless network 120 via apparatus 220 as network node 125) . Process 400 may proceed from 410 to 420.
[0049] At 420, process 400 may involve processor 212 acting with respect to a timer upon receipt of the message.
[0050] In some implementations, in receiving the message, process 400 may involve processor 212 receiving a NOTIFICATION message.
[0051] In some implementations, in acting with respect to the timer, process 400 may involve processor 212 stopping a T3540 timer upon receipt of the message. Moreover, process 400 may also involve processor 212 sending an uplink signaling to the network via the existing N1 NAS signaling connection.
[0052] In some implementations, the timer may be kept running for allowing the network to release an existing N1 NAS signaling connection. Moreover, the timer may be stopped for keeping the existing N1 NAS signaling connection.
[0053] In some implementations, in acting with respect to the timer, process 400 may also involve processor 212 initiating a service request procedure over a 3GPP access via an existing N1 NAS signaling connection.
[0054] In some implementations, in acting with respect to the timer, process 400 may also involve processor 212, upon reception of a NOTIFICATION message: (a) stopping a timer T3540; and (b) sending an uplink signaling to the network via an existing N1 NAS signaling connection.
[0055] Additional Notes
[0056] The herein-described subject matter sometimes illustrates different components contained within, or connected with, different other components. It is to be understood that such depicted architectures are merely examples, and that in fact many other architectures can be implemented which achieve the same functionality. In a conceptual sense, any arrangement of components to achieve the same functionality is effectively "associated" such that the desired functionality is achieved. Hence, any two components herein combined to achieve a particular functionality can be seen as "associated with" each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated can also be viewed as being "operably connected" , or "operably coupled" , to each other to achieve the desired functionality, and any two components capable of being so associated can also be viewed as being "operably couplable" , to each other to achieve the desired functionality. Specific examples of operably couplable include but are not limited to physically mateable and / or physically interacting components and / or wirelessly interactable and / or wirelessly interacting components and / or logically interacting and / or logically interactable components.
[0057] Further, with respect to the use of substantially any plural and / or singular terms herein, those having skill in the art can translate from the plural to the singular and / or from the singular to the plural as is appropriate to the context and / or application. The various singular / plural permutations may be expressly set forth herein for sake of clarity.
[0058] Moreover, it will be understood by those skilled in the art that, in general, terms used herein, and especially in the appended claims, e.g., bodies of the appended claims, are generally intended as “open” terms, e.g., the term “including” should be interpreted as “including but not limited to, ” the term “having” should be interpreted as “having at least, ” the term “includes” should be interpreted as “includes but is not limited to, ” etc. It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to implementations containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an, " e.g., “a” and / or “an” should be interpreted to mean “at least one” or “one or more; ” the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should be interpreted to mean at least the recited number, e.g., the bare recitation of "two recitations, " without other modifiers, means at least two recitations, or two or more recitations. Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc. ” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention, e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. In those instances where a convention analogous to “at least one of A, B, or C, etc. ” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention, e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. It will be further understood by those within the art that virtually any disjunctive word and / or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “Aand B. ”
[0059] From the foregoing, it will be appreciated that various implementations of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. Accordingly, the various implementations disclosed herein are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
Claims
1.A method, comprising:maintaining, by a processor of a user equipment (UE) , a timer which is for allowing a network to release an N1 non-access stratum (NAS) signaling connection;receiving, by the processor, a message from the network; andkeeping, by the processor, the timer running upon receipt of the message.2.The method of claim 1, wherein the timer is T3540.3.The method of claim 1, wherein the message is a 5th Generation Mobility Management (5GMM) status message.4.The method of Claim 1, wherein the receiving of the message comprises receiving a message of a network-initiated 5th Generation Mobility Management (5GMM) common procedure except a CONFIGURATION UPDATE COMMAND message.5.The method of Claim 1, further comprising.locally releasing the N1 NAS signaling connection.6.The method of Claim 1, wherein the keeping of the timer running comprises keeping the timer running without requesting an acknowledgement from the network and without requesting a 5th Generation Mobility Management (5GMM) status procedure.7.The method of Claim 1, further comprising, upon receipt of a message of a network-initiated 5th Generation Mobility Management (5GMM) common procedure except a CONFIGURATION UPDATE COMMAND message, and without requesting an acknowledgement from the network and without requesting a 5GMM status procedure:stopping a timer T3540; andresponding to the network-initiated 5GMM common procedure via the N1 NAS signaling connection.8.A method, comprising:receiving, by a processor of a user equipment (UE) , a message from a network; andacting, by the processor, with respect to a timer upon receipt of the message.9.The method of Claim 8, wherein the receiving of the message comprises receiving a NOTIFICATION message.10.The method of Claim 8, wherein the acting with respect to the timer comprises stopping a T3540 timer upon receipt of the message.11.The method of claim 10, wherein the time is kept running for allowing the network to release an existing N1 non-access stratum (NAS) signaling connection, and wherein the time is stopped for keeping the existing N1 NAS signaling connection.12.The method of Claim 11, wherein the acting with respect to the timer further comprises sending an uplink signaling to the network via the existing N1 NAS signaling connection.13.The method of Claim 8, wherein the acting with respect to the timer comprises initiating a service request procedure over a 3rd Generation Partnership Project (3GPP) access via an existing N1 non-access stratum (NAS) signaling connection.14.The method of Claim 8, wherein the acting with respect to the timer comprises, upon reception of a NOTIFICATION message:stopping a timer T3540; andsending an uplink signaling to the network via an existing N1 non-access stratum (NAS) signaling connection.15.An apparatus implementable in a user equipment (UE) , comprising:a transceiver configured to communicate wirelessly; anda processor coupled to the transceiver and configured to perform operations, via the transceiver, comprising:maintaining a timer which is for allowing a network to release an N1 non-access stratum (NAS) signaling connection;receiving, via the transceiver, a message from the network; andkeeping the timer running upon receipt of the message.16.The apparatus of claim 15, wherein the timer is T3540.17.The apparatus of claim 15, wherein the message is a 5th Generation Mobility Management (5GMM) status message.18.The apparatus of claim 15, wherein the keeping of the timer running comprises keeping the timer running without requesting an acknowledgement from the network and without requesting a 5th Generation Mobility Management (5GMM) status procedure.19.The apparatus of claim 15, wherein the processor is further configured to locally release the N1 NAS signaling connection.20.The apparatus of claim 15, wherein the processor is further configured to perform operations comprising, upon receipt of a message of a network-initiated 5th Generation Mobility Management (5GMM) common procedure except a CONFIGURATION UPDATE COMMAND message, and without requesting an acknowledgement from the network and without requesting a 5GMM status procedure:stopping a timer T3540; andresponding to the network-initiated 5GMM common procedure via the N1 NAS signaling connection.
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