Method and device in terminal used for wireless communication

Abstract

The invention discloses a method and equipment used in a terminal for wireless communication. The method comprises the following steps: receiving a first signaling through a first interface; the first signaling requests local information of the terminal; sending a first message through the first interface as a response to receiving the first signaling, the first message indicating that the ME is in an inactive state, the first message including a first timing advance value, the first message indicating a freshness of the first timing advance value; wherein the first interface is an interface between an integrated circuit card of the terminal and a mobile equipment (ME) of the terminal, and the first interface is an interface between the integrated circuit card of the terminal and the ME of the terminal. According to the invention, the timing advance information can be indicated more accurately.

Description

Technical Field

[0001] The present application relates to a method for reporting timing advance on an integrated circuit card and a mobile device interface in a cellular wireless communication terminal. Background Art

[0002] In the future, the application scenarios of wireless communication systems will become more and more diversified, and different application scenarios will put forward different performance requirements for the system. In order to meet the different performance requirements of various application scenarios, the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting decided to study the new radio (NR) (or Fifth Generation, 5G) technology, and the NR WI (Work Item) was passed at the 3GPP RAN #75 plenary meeting, starting the standardization work on NR.

[0003] In communication, both LTE (Long Term Evolution) and 5G NR involve accurate reception of reliable information, optimized energy efficiency, determination of information validity, flexible resource allocation, scalable system structure, efficient non-access layer information processing, low service interruption and drop rate, and support for low power consumption. This is of great significance to the normal communication between base stations and user equipment, the reasonable scheduling of resources, and the balancing of system loads. It can be said to be the cornerstone of high throughput, meeting the communication needs of various services, improving spectrum utilization, and improving service quality. It is indispensable for eMBB (ehanced Mobile BroadBand), URLLC (Ultra Reliable Low Latency Communication) and eMTC (enhanced Machine Type Communication). At the same time, in IIoT (Industrial Internet of Things), V2X (Vehicular to X), device to device, unlicensed spectrum communication, user communication quality monitoring, network planning and optimization, TN (Territial Network), dual connectivity system, wireless resource management and multi-antenna codebook selection, signaling design, neighbor management, business management, and beamforming, there are extensive demands. Information transmission methods are divided into broadcast and unicast. Both transmission methods are essential for 5G systems because they are very helpful in meeting the above requirements.

[0004] As the scenarios and complexity of the system continue to increase, higher requirements are placed on reducing interruption rates, reducing latency, enhancing reliability, enhancing system stability, business flexibility, and power saving. At the same time, compatibility between different versions of different systems also needs to be considered during system design. Summary of the invention

[0005] The researchers found that when the ME needs to report the timing advance at the interface between the integrated circuit card and the mobile device, how to report the timing advance information more accurately and, further, how to indicate the freshness of the timing advance value is a problem that needs to be solved.

[0006] In view of the above-mentioned problems, this application provides a solution.

[0007] It should be noted that, in the absence of conflict, the embodiments and features in any node of the present application can be applied to any other node. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other. At the same time, the method proposed in the present application can also be used to solve other problems in communication, such as NR evolution and problems in 6G systems.

[0008] As an embodiment, the interpretation of the terminology in the present application refers to the definition of the 3GPP specification protocol TS38 series.

[0009] As an example, the interpretation of the terms in the present application refers to the definitions of the TS37 series of specification protocols of 3GPP.

[0010] As an example, the interpretation of the terms in the present application refers to the definitions of the TS31 series of specification protocols of 3GPP.

[0011] The present application discloses a method in a terminal used for wireless communication, comprising:

[0012] Receiving a first signaling through a first interface; the first signaling requests local information of the terminal;

[0013] In response to receiving the first signaling, sending a first message through the first interface, the first message indicating that the ME is in an inactive state, the first message including a first timing advance value, and the first message indicating the freshness of the first timing advance value;

[0014] The first interface is an interface between the integrated circuit card of the terminal and the mobile equipment (Mobile Equipment, ME) of the terminal.

[0015] As an embodiment, the problem to be solved by the present application includes: how to more accurately report the timing advance information, especially the freshness of the timing advance value, to an integrated circuit card or a SIM (Subscriber Identity Module).

[0016] As an embodiment, the benefits of the above method include: the reported timing advance information is more accurate, more available, more practical, better supports the maintenance of multiple timing advance scenarios, is conducive to supporting more accurate positioning, is conducive to better supporting location-based services, is conducive to supporting AI (artificial intelligence, artificial intelligence)-based services, is conducive to more accurate billing, and is conducive to avoiding misoperation.

[0017] Specifically, according to one aspect of the present application, the first message indicates that the freshness of the first timing advance value includes: the first message indicates the acquisition time of the first timing advance value.

[0018] Specifically, according to one aspect of the present application, the first message indicating the freshness of the first timing advance value includes: the first message indicating whether a timing advance timer associated with the first timing advance value has expired.

[0019] Specifically, according to one aspect of the present application, the first message indicating the freshness of the first timing advance value includes: the first message indicating how long a timing advance timer associated with the first timing advance value has expired.

[0020] Specifically, according to one aspect of the present application, the first message indicating the freshness of the first timing advance value includes: whether the serving cell targeted by the first timing advance value indicated by the first message is the current serving cell.

[0021] Specifically, according to one aspect of the present application, the first message indicating the freshness of the first timing advance value includes: the first message includes a substate of the ME, the substate is a substate of the inactive state, and the substate reflects the freshness of the first timing advance value.

[0022] Specifically, according to one aspect of the present application, the first message indicates whether there is at least one of an ongoing session, ongoing data transmission, and an ongoing random access process.

[0023] Specifically, according to one aspect of the present application, the first message indicating the freshness of the first timing advance value includes: the first message indicating whether the terminal is in a stationary state.

[0024] Specifically, according to one aspect of the present application, initiating a random access process on an air interface as a response to receiving the first signaling includes: receiving a timing advance command;

[0025] The first timing advance value depends on the timing advance command.

[0026] Specifically, according to one aspect of the present application, the first timing advance value is adjusted by the timing advance maintained by the terminal.

[0027] Specifically, according to one aspect of the present application, the terminal is an Internet of Things terminal.

[0028] Specifically, according to one aspect of the present application, the terminal is a user equipment.

[0029] Specifically, according to one aspect of the present application, the terminal is a vehicle-mounted terminal.

[0030] Specifically, according to one aspect of the present application, the terminal is a mobile phone.

[0031] The present application discloses a terminal used for wireless communication, comprising:

[0032] The terminal includes: one or more processors and a memory;

[0033] The memory is coupled to the one or more processors, and the memory is used to store computer program codes, where the computer program codes include computer instructions. The one or more processors call the computer instructions to enable the terminal to execute the method according to any one of claims 1 to 6.

[0034] As an embodiment, compared with the traditional solution, this application has the following advantages:

[0035] In wireless communication, it is necessary to use various forms of SIM cards. SIM cards are integrated circuit cards. In the discussion of 3GPP, UICC (Universal Integrated Circuit Card) is defined. UICC carries SIM applications and has a specific interface with ME. This interface is located inside the mobile phone and is a circuit interface. This interface has a unique information interaction method and unique performance requirements. The SIM card stores key information for accessing the network, such as keys, information related to billing, etc. At the same time, the SIM card also has other important functions and applications. At the same time, the SIM card also has certain data processing capabilities. These functions and applications require the ME to input parameters through the above-mentioned specific interface. The SIM card only masters and only masters part of the information of the ME. The above parameters include the timing advance involved in this application. Timing advance can be used for a variety of functions including positioning. Timing advance information is information between the ME and the network, and is not mastered by the SIM card. Therefore, the SIM needs to request timing advance from the ME. The method proposed in this application helps the SIM card to obtain more accurate timing advance information, thereby obtaining more accurate positioning, supporting more accurate location-based services, supporting location-based billing, and so on.

[0036] At the same time, the method proposed in this application helps to support the terminal to maintain multiple timing advances.

[0037] The application of SIM cards is an important service provided by network operators. The method proposed in this application is conducive to the network providing better services.

[0038] Avoid confusion and misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0040] Figure 1 A schematic diagram showing receiving a first signaling through a first interface and sending a first message through the first interface according to an embodiment of the present application is shown;

[0041] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present application is shown;

[0042] Figure 3 A schematic diagram showing an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0043] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0044] Figure 5 A flow chart showing wireless signal transmission according to an embodiment of the present application is shown;

[0045] Figure 6 A schematic diagram showing a terminal structure according to an embodiment of the present application is shown;

[0046] Figure 7 A schematic diagram showing a timing advance according to an embodiment of the present application is shown;

[0047] Figure 8 A schematic diagram showing a terminal maintaining multiple timing advances according to an embodiment of the present application is shown;

[0048] Fig. 9 A schematic diagram showing whether a first message indicates at least one of an ongoing session, ongoing data transmission and an ongoing random access process according to an embodiment of the present application;

[0049] Fig.10 A schematic diagram showing a first timing advance value obtained by adjusting the timing advance maintained by a terminal according to an embodiment of the present application is shown;

[0050] Fig.11 The following is a schematic diagram illustrating a processing device used in a terminal according to an embodiment of the present application. Implementation

[0052] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0053] Example 1

[0054] Embodiment 1 illustrates a flowchart of receiving a first signaling through an interface and sending a first message through a first interface according to an embodiment of the present application, as shown in the attached Figure 1 Attached Figure 1 In the figure, each box represents a step. It should be emphasized that the order of the boxes in the figure does not represent the temporal relationship between the steps represented.

[0055] In Example 1, the terminal in the present application receives a first signaling through a first interface in step 101; and sends a first message through the first interface in step 102.

[0056] The first signaling requests local information of the terminal; as a response to receiving the first signaling, step 102 is executed, the first message indicates that the ME is in an inactive state, the first message includes a first timing advance value, and the first message indicates the freshness of the first timing advance value; wherein the first interface is an interface between an integrated circuit card of the terminal and a mobile equipment (Mobile Equipment, ME) of the terminal.

[0057] As an embodiment, the first message indicates the first cell.

[0058] As an embodiment, the first timing advance value is for the first cell.

[0059] As an embodiment, whether the first message indicates the amount of timing advance that the first cell relies on maintained by the terminal.

[0060] As an embodiment, the meaning of whether the first message indicates that the first cell depends on the number of timing advances maintained by the terminal includes: the first message indicates the first cell only when the terminal maintains multiple timing advances.

[0061] As an embodiment, the first signaling triggers the first message.

[0062] As an embodiment, the first message is a response to the first signaling.

[0063] As an embodiment, the terminal is UE (User Equipment).

[0064] As an embodiment, any parameter in the present application may be either configured by the network or generated by the terminal according to an internal algorithm, such as randomly.

[0065] As an embodiment, the values ​​of the timers in the present application are all limited and do not exceed 2560 milliseconds.

[0066] As an embodiment, the value of the timer is the running time when the timer is not interfered with.

[0067] As an example, the value of any parameter in the present application, including but not limited to the value of a timer and the value of a counter, is limited unless otherwise stated.

[0068] As a sub-embodiment of this embodiment, the upper limit of the value of any parameter in this application is 1024 times of 65536.

[0069] As a sub-embodiment of this embodiment, the upper limit of the value of any parameter in this application is 65536 or 65535.

[0070] As a sub-embodiment of this embodiment, the upper limit of the value of any parameter in this application is 1024.

[0071] As a sub-embodiment of this embodiment, the upper limit of the value of any parameter in this application is 640 or 320.

[0072] As an embodiment, the present application is directed to NR.

[0073] As an embodiment, the present application is directed to a NR evolved wireless communication network.

[0074] As an embodiment, the serving cell refers to the cell where the UE resides. Performing a cell search includes the UE searching for a suitable cell of the selected PLMN (Public Land Mobile Network) or SNPN (Stand-alone Non-Public Network), selecting the suitable cell to provide available services, and monitoring the control channel of the suitable cell. This process is defined as residing on the cell; that is, a residing cell is the serving cell of the UE relative to the UE. Residing on a cell in the RRC idle state or the RRC inactive state has the following benefits: it enables the UE to receive system messages from the PLMN or SNPN; after registration, if the UE wishes to establish an RRC connection or continue a suspended RRC connection, the UE can do so by performing initial access on the control channel of the residing cell; the network can page the UE; and the UE can receive ETWS (Earthquake and Tsunami Warning System) and CMAS (Commercial Mobile Alert System) notifications.

[0075] As an embodiment, for a UE in an RRC connected state that is not configured with CA / DC (carrier aggregation / dual connectivity), there is only one service cell including a primary cell. For a UE in an RRC connected state that is configured with CA / DC (carrier aggregation / dual connectivity), the service cell is used to indicate a set of cells including a special cell (SpCell) and all cells from the small cell. The primary cell (Primary Cell) is an MCG (Master Cell Group) cell that operates on the main frequency. The UE performs an initial connection establishment process or initiates connection reconstruction on the primary cell. For dual connection operations, the special cell refers to the PCell (Primary Cell) of the MCG or the PSCell (Primary SCGCell) of the SCG (Secondary Cell Group); if it is not a dual connection operation, the special cell refers to the PCell.

[0076] As an embodiment, the operating frequency of the SCell (Secondary Cell) is a secondary frequency.

[0077] As an embodiment, the terminal is only configured with MCG.

[0078] As an example, individual contents of an information element are referred to as fields.

[0079] As an embodiment, MR-DC (Multi-Radio Dual Connectivity) refers to dual connectivity between E-UTRA and NR nodes, or dual connectivity between two NR nodes.

[0080] As an embodiment, in MR-DC, the wireless access node that provides the control plane connection to the core network is the master node, which may be a master eNB, a master ng-eNB, or a master gNB.

[0081] As an embodiment, MCG refers to a group of service cells associated with a master node in MR-DC, including SpCells, and may also, optionally, include one or more SCells.

[0082] As an embodiment, PCell is the SpCell of MCG.

[0083] As an embodiment, the PSCell is the SpCell of the SCG.

[0084] As an embodiment, in MR-DC, the control plane connection to the core network is not provided, and the radio access node that provides additional resources to the UE is a slave node. The slave node can be an en-gNB, a slave ng-eNB or a slave gNB.

[0085] As an embodiment, in MR-DC, a group of service cells associated with a slave node is a SCG (secondary cell group), including a SpCell and, optionally, one or more SCells.

[0086] As an embodiment, the SpCell is a PCell or the SpCell is a PSCell.

[0087] As an embodiment, in the RRC inactive state, DC is not used.

[0088] As an example, in the RRC inactive state, CA is typically not used.

[0089] As an embodiment, the RRC information block refers to an information block (information element) in an RRC message.

[0090] As an embodiment, SSB may be referred to as SS\PBCH, or SS block.

[0091] As an embodiment, L1 is layer 1 (Layer-1) or physical layer.

[0092] As an example, L2 is Layer-2

[0093] As an embodiment, the present application is directed to NR and NR evolved networks, such as 6G networks.

[0094] As an embodiment, one RRC information block may include one or more RRC information blocks.

[0095] As an embodiment, an RRC information block may not include any RRC information block, but only include at least one parameter.

[0096] As an embodiment, the radio bearer includes at least a signaling radio bearer and a data radio bearer.

[0097] As an embodiment, the radio bearer is a service or an interface of a service provided by the PDCP layer to a higher layer.

[0098] As a sub-embodiment of this embodiment, the higher layer includes one of the RRC sublayer, NAS, and SDAP layer.

[0099] As an embodiment, the signaling radio bearer is a service or an interface of services provided by PDCP to a higher layer.

[0100] As a sub-embodiment of this embodiment, the higher layer includes an RRC sublayer, at least the former in NAS.

[0101] As an embodiment, the data radio bearer is a service or an interface of services provided by PDCP to a higher layer.

[0102] As a sub-embodiment of this embodiment, the higher layer includes the SDAP layer, at least the former in NAS.

[0103] As an embodiment, after the terminal establishes an RRC connection with the network, the terminal enters an RRC connection state.

[0104] As a sub-embodiment of this embodiment, the network is a Radio Access Network (RAN).

[0105] As an embodiment, when the terminal does not establish an RRC connection with the network, the terminal is in an RRC idle state.

[0106] As a sub-embodiment of this embodiment, the network is a Radio Access Network (RAN).

[0107] As an embodiment, when the RRC connection established between the terminal and the network is suspended, the terminal enters an RRC inactive state.

[0108] As a sub-embodiment of this embodiment, the network is a Radio Access Network (RAN).

[0109] As an embodiment, different functions are supported in different RRC states.

[0110] As an embodiment, only very limited functions are supported in the non-RRC connected state.

[0111] As an embodiment, the non-RRC connected state is or includes an RRC idle state.

[0112] As an embodiment, the non-RRC connected state is or includes an RRC inactive state.

[0113] As an embodiment, the first signaling in the present application is not signaling of the Uu interface.

[0114] As an embodiment, the signaling of the Uu interface includes RRC signaling, NAS signaling, MAC layer control signaling, and physical layer control signaling.

[0115] As an embodiment, in this field, the signaling of the Uu interface, that is, the signaling between the UE and the network, cannot solve the problem to be solved by the present application.

[0116] As an embodiment, the first interface is an internal interface of the terminal.

[0117] As an embodiment, the internal interface is an interface that needs to be standardized.

[0118] As an embodiment, the interior refers to the physical interior.

[0119] As an embodiment, the first interface is an electrical or circuit interface.

[0120] As an embodiment, the first interface is not an air interface.

[0121] As an embodiment, the technical solution of the air interface must take into account latency, channel environment, and communication resources, while the first interface is an interface within the terminal and generally does not need to consider issues that urgently need to be considered in the air interface, so the technical route adopted is completely different.

[0122] As an embodiment, the first interface is an interface between the integrated circuit card of the terminal and the mobile equipment (ME) of the terminal.

[0123] As an embodiment, the integrated circuit card includes a UICC (Universal Integrated Circuit Card).

[0124] As an embodiment, the UICC includes a SIM.

[0125] As an embodiment, the integrated circuit card includes a SIM.

[0126] As an embodiment, the integrated circuit card includes a SIM card.

[0127] As an embodiment, the integrated circuit card may be provided by different operators, so the interface between the integrated circuit card and the ME needs to be defined by a standard.

[0128] As an embodiment, the SIM includes a low power consumption SIM.

[0129] As an embodiment, the SIM includes a USIM (Universal SIM).

[0130] As an embodiment, the SIM includes an eSIM (electronic SIM).

[0131] As an embodiment, the integrated circuit card stores core parameters.

[0132] As an embodiment, the core parameters include a permanent identification of the terminal.

[0133] As an embodiment, the permanent identifier includes a SUPI (subscription permanent identifier).

[0134] As an embodiment, the core parameters include general access control parameters.

[0135] As an embodiment, the core parameters include a key.

[0136] As an embodiment, the first signaling belongs to a SIM application toolkit.

[0137] As an embodiment, the first message belongs to a SIM application toolkit.

[0138] As an embodiment, the SIM application toolbox is or includes signaling and signaling flow defined on the first interface.

[0139] As an embodiment, the first signaling belongs to a SIM application.

[0140] As an embodiment, the first message belongs to a SIM application.

[0141] As an embodiment, the terminal is a UE or a mobile phone.

[0142] As an embodiment, the terminal includes the integrated circuit card and the ME.

[0143] As an embodiment, the terminal includes a ME.

[0144] As an embodiment, receiving the first signaling through the first interface means that: the first signaling is a signaling defined on the first interface.

[0145] As an embodiment, the first signaling is sent by the integrated circuit card or SIM of the terminal to the ME.

[0146] As an embodiment, the first signaling complies with a protocol between the UICC and the ME.

[0147] As an embodiment, the first message complies with the protocol between the UICC and the ME.

[0148] As an embodiment, the first signaling is active signaling.

[0149] As an embodiment, the first signaling requests the ME to send current local information to the UICC.

[0150] As an embodiment, the first signaling is PROVIDE LOCAL INFORMATION.

[0151] As an embodiment, the first signaling includes instruction '05', indicating a request for timing advance.

[0152] As an embodiment, the first signaling includes an instruction other than '05', indicating a request for multiple timing advances.

[0153] As an embodiment, the first signaling includes an instruction other than '05', indicating a request for timing advance of the first cell.

[0154] As an embodiment, the first message indicating that the first cell relies on the first signaling includes instruction '05'.

[0155] As an embodiment, the first message indicates that the first cell relies on the first signaling including the instructions other than instruction '05'.

[0156] As an embodiment, the ME needs to provide feedback on the first signaling.

[0157] As an embodiment, the first signaling triggers the first message.

[0158] As an embodiment, the first message is feedback to the first signaling.

[0159] As an embodiment, the meaning of sending the first message through the first interface includes: the first message is a message on the first interface.

[0160] As an embodiment, the meaning of sending the first message through the first interface includes: the protocol of the first message on the first interface.

[0161] As an embodiment, the sending of the first message through the first interface means: the ME sends the first message to the UICC through the first interface.

[0162] As an embodiment, the first message is localinformation included in the TERMINAL RESPONSE.

[0163] As an embodiment, the first message is or includes timing advance information.

[0164] As an embodiment, the timing advance information is local information of the terminal.

[0165] As an embodiment, the timing advance information is timing advance information maintained locally by the terminal.

[0166] As an embodiment, the local information included in the first message includes the first timing advance value.

[0167] As an embodiment, the timing advance information includes the first timing advance value.

[0168] As an embodiment, the timing advance information includes NG-RAN / Satellite NG-RAN PrimaryTiming Advance Information.

[0169] As an embodiment, the timing advance information includes eNG-RAN Primary Timing AdvanceInformation.

[0170] As an embodiment, the timing advance information includes eNG-RAN / Satellite eNG-RAN PrimaryTiming Advance Information.

[0171] As an embodiment, the timing advance information is the timing advance information of a 6G wireless access network.

[0172] As an embodiment, the timing advance information includes at least 6 bytes.

[0173] As an embodiment, the timing advance information includes at least 8 bytes.

[0174] As an embodiment, the first timing advance value is a timing advance value.

[0175] As an embodiment, the first timing advance value occupies 3 bytes.

[0176] As an embodiment, the first timing advance value is a timing advance value maintained by the terminal.

[0177] As an embodiment, the first timing advance value is a value of one of the timing advances maintained by the terminal.

[0178] As an embodiment, the first timing advance is for the first cell and includes: the first timing advance is an offset between a downlink frame of the first cell and an uplink frame sent to the first cell.

[0179] As an embodiment, the uplink radio frame and the downlink radio frame of the terminal are for the same cell.

[0180] As an embodiment, the same cell includes the first cell.

[0181] As an embodiment, there is a corresponding relationship between the uplink wireless frame and the downlink wireless frame of the terminal.

[0182] As an embodiment, the offset between the uplink wireless frame and the downlink wireless frame of the terminal is a time offset.

[0183] As an embodiment, the uplink wireless frame of the terminal is an uplink frame transmitted by the terminal.

[0184] As an embodiment, the downlink wireless frame of the terminal is a downlink wireless frame received by the terminal.

[0185] As an embodiment, the timing advance maintained by the terminal includes: the timing advance configured for the terminal.

[0186] As an embodiment, the timing advance maintained by the terminal includes: the timing advance of the timing advance group configured for the terminal.

[0187] As an embodiment, the timing advance maintained by the terminal includes: the terminal starts a corresponding timer for any maintained timing advance, and when the corresponding timer expires, any maintained timing advance is considered unavailable.

[0188] As an embodiment, when the maintained timing advance is valid, the terminal remains synchronized with the network.

[0189] As a sub-embodiment of this embodiment, the network is the network to which the timing advance is directed.

[0190] As an embodiment, the timing advance maintained by the terminal includes: receiving an instruction from a network to update the maintained timing advance.

[0191] As an embodiment, the timing advance maintained by the terminal includes: initiating a random access process to obtain the maintained timing advance.

[0192] As an embodiment, the timing advance maintained by the terminal includes: measuring an uplink or downlink delay to obtain the maintained timing advance.

[0193] As an embodiment, the timing advance maintained by the terminal includes: timing advances respectively maintained for communicating with corresponding cells.

[0194] As an embodiment, different timing advances correspond to different cells.

[0195] As an embodiment, the timing advance is caused by a certain distance between the terminal and the network antenna.

[0196] As an embodiment, a timing advance group includes a timing advance.

[0197] As an embodiment, when the terminal is configured with multiple timing advance groups, the terminal maintains multiple timing advances.

[0198] As an embodiment, a timing advance group corresponds to or is associated with at least one cell.

[0199] As an embodiment, the meaning that one timing advance group corresponds to or is associated with at least one cell is that the timing advance of the at least one cell is the timing advance of the one timing advance group.

[0200] As an embodiment, the method proposed in the present application is particularly suitable for a scenario where the timing advance values ​​maintained by the terminals are different.

[0201] As an embodiment, the first timing advance value is a timing advance value.

[0202] As an embodiment, the value of the timing advance adopts a format suitable for transmission of the first message.

[0203] As an embodiment, the format suitable for transmitting the first message includes a base.

[0204] As an embodiment, the format suitable for transmission of the first message includes precision.

[0205] As an embodiment, the format suitable for transmission of the first message includes the number of bits.

[0206] As an embodiment, the first timing advance value is for the first cell and includes: the first timing advance value is or indicates the timing advance of the first cell.

[0207] As an embodiment, the first timing advance value is for the first cell and includes: the first timing advance value is a timing advance value of a timing advance group to which the first cell belongs.

[0208] As an embodiment, the first timing advance value is for the first cell and includes: the first timing advance value is obtained by the timing advance of the timing advance group to which the first cell belongs.

[0209] As an embodiment, the communication between the terminal and the first cell depends on the first timing advance value.

[0210] As an embodiment, the terminal sends a signal to the first cell depending on the first timing advance value.

[0211] As an embodiment, the reliance on the first timing advance value is to determine the uplink sending time according to the first timing advance value.

[0212] As an embodiment, the reliance on the first timing advance value is to determine the uplink sending time according to the first timing advance value and the reception time of the downlink wireless frame.

[0213] As an embodiment, the integrated circuit card refers to an integrated circuit card in a mobile phone terminal.

[0214] As an embodiment, the integrated circuit card is pluggable.

[0215] As an embodiment, the integrated circuit card corresponds to or stores a SIM application.

[0216] As an embodiment, a user equipment (UE) is a device that allows a user to access network services. The interface between the user equipment and the network is an air interface. A user equipment can be further subdivided into at least one domain, and different domains are separated by reference points. The user equipment is subdivided into an integrated circuit card domain and a mobile equipment (ME) domain. The mobile equipment domain can be further subdivided into one or more mobile terminals and terminal equipment components to show the connection relationship between different functional groups.

[0217] As an embodiment, one mobile station (MS) corresponds to one UE.

[0218] As an embodiment, a mobile equipment (Mobile Equipment, ME), the mobile equipment is functionally divided into multiple entities or components, namely, one or more mobile terminals (Mobile Terminations, MT), and one or more (Terminal Equipments, TE).

[0219] As an example, TE refers to a device that provides necessary functions for a user to operate an access protocol. These functions are a user-side function group on the user and network interface.

[0220] As an embodiment, the MT is a component of the ME for supporting functions related to managing the PLMN access interface.

[0221] As an embodiment, MT is implemented as a functional entity.

[0222] As an embodiment, the access interface includes 3GPP and non-3GPP interfaces.

[0223] As an embodiment, the integrated circuit card communicates with the network via a set of bearer-independent protocols, ie, the ME provides a mechanism for the SIM application on the integrated circuit card to access data bearers supported by the ME and the network.

[0224] As an embodiment, the protocol of the air interface is bearer dependent.

[0225] As an embodiment, the communication context multiplexed on the physical channel on the first interface is also called a logical channel, and such a logical channel is different from the logical channel of the MAC sublayer.

[0226] As an embodiment, the communication context includes a command or a response.

[0227] As an embodiment, the first signaling is the command.

[0228] As an embodiment, the first message is the response.

[0229] As an embodiment, the SIM application toolbox process is a communication protocol between the ME and the integrated circuit card, and its function includes the application of the integrated circuit card sending commands to the ME.

[0230] As an embodiment, the terminal in the present application has only one ME.

[0231] As an embodiment, the ME in the present application is any ME of the terminal.

[0232] As an embodiment, the timing advance maintained by the terminal is the timing advance maintained by the ME.

[0233] As an embodiment, the first message indicates the first cell only when the terminal maintains multiple timing advances, including: when the terminal maintains at most one timing advance, the first message does not indicate the first cell.

[0234] As an embodiment, the first message indicates the first cell only when the terminal maintains multiple timing advances, including: when the terminal maintains at most one timing advance, the first message is not required to indicate the first cell.

[0235] As an embodiment, only when the terminal maintains multiple timing advances, the first message indicates the first cell includes: when the terminal maintains multiple timing advances, the first message is required to indicate the first cell.

[0236] As an embodiment, the first message is required by the ME.

[0237] As an embodiment, the first signaling indicates the first cell.

[0238] As an embodiment, the first signaling indicating the first cell includes: the first signaling requests a timing advance value for the first cell.

[0239] As a sub-embodiment of this embodiment, the first cell is a cell other than the PCell of the terminal.

[0240] As an embodiment, the first timing advance value is for the first cell, which means that the first timing advance is the timing advance of the first cell.

[0241] As an embodiment, the first timing advance value is for the first cell, which means that the first timing advance is the timing advance of the timing advance group to which the first cell belongs.

[0242] As an embodiment, the first timing advance value is for the first cell, which means that the first timing advance is the timing advance of a timing advance group corresponding to or associated with the first cell.

[0243] As an embodiment, the first message indicating the first cell includes: the first message indicates an identifier of the first cell.

[0244] As an embodiment, the identifier of the first cell includes a PCI (physical cell identifier).

[0245] As an embodiment, the identifier of the first cell includes a CGI (Cell Global Identifier).

[0246] As an embodiment, the CGI includes NCGI (NR CGI).

[0247] As an embodiment, the identifier of the first cell includes CGI and PCI.

[0248] As an embodiment, the PCI is indicated by system information of the first cell.

[0249] As an embodiment, the PCI includes is indicated by ServingCellConfigCommon.

[0250] As an embodiment, the PCI includes additionalPCI.

[0251] As an embodiment, at least one of the timing advances maintained by the terminal is for NTN.

[0252] As an embodiment, at least one of the timing advances maintained by the terminal is for TN.

[0253] As an embodiment, the multiple timing advances belong to multiple timing advance groups (TAGs) respectively.

[0254] As an embodiment, the multiple timing advances belong to at least two timing advance groups.

[0255] As an embodiment, a timing advance group includes or is associated with at least one cell, and the at least one cell included in or associated with the timing advance group has the same timing advance.

[0256] As an embodiment, the at least one cell included in or associated with the one timing advance group is synchronized.

[0257] As an embodiment, the at least one cell included in or associated with the one timing advance group is co-located.

[0258] As an embodiment, the at least one cell included in or associated with the one timing advance group has the same offset between the uplink radio frame and the downlink radio frame.

[0259] As an embodiment, the offset between the uplink radio frame and the downlink radio frame of the at least one cell included in or associated with the one timing advance group is less than a threshold.

[0260] As an embodiment, the one threshold is the accuracy of the timing advance.

[0261] As an embodiment, any timing advance belongs to a certain TAG.

[0262] As an embodiment, the multiple timing advance groups are all master timing advance groups.

[0263] As an embodiment, the multiple timing advance groups are all primary timing advance groups, which means that the terminal has multiple primary timing advance groups.

[0264] As an embodiment, each timing advance group has an identifier, and different timing advance groups have different identifiers.

[0265] As an embodiment, the timing advance group refers to: a group of serving cells configured by RRC signaling, using the same timing reference cell and the same timing advance value.

[0266] As an embodiment, part or all of the group of service cells are configured with uplink.

[0267] As an embodiment, the timing advance group of the SpCell including a MAC entity is a primary timing advance group (PTAG).

[0268] As an embodiment, the timing advance group other than the primary timing advance group is a secondary timing advance group (STAG).

[0269] As an embodiment, at least two timing advances among the multiple timing advances belong to the same timing advance group.

[0270] As a sub-embodiment of this embodiment, the multiple timing advances are the multiple timing advances maintained by the terminal.

[0271] As an embodiment, the multiple timing advances include two timing advances.

[0272] As a sub-embodiment of this embodiment, the multiple timing advances are the multiple timing advances maintained by the terminal.

[0273] As an embodiment, the multiple timing advances include more than two timing advances.

[0274] As a sub-embodiment of this embodiment, the multiple timing advances are the multiple timing advances maintained by the terminal.

[0275] As an embodiment, one serving cell belongs to only one TAG.

[0276] As an embodiment, the meaning of whether the first message indicates that the first cell depends on the number of timing advances maintained by the terminal includes: when the number of timing advances maintained by the terminal is greater than 1, the first message indicates the first cell; when the number of timing advances maintained by the terminal is 1, whether the first message indicates that the first cell is optional.

[0277] As a sub-embodiment of this embodiment, the first message indicating the first cell means that the first message is required to indicate the first cell.

[0278] As an embodiment, the first message indicates a plurality of cells and a timing advance value for each of the plurality of cells respectively;

[0279] The terminal maintains multiple timing advances.

[0280] As an embodiment, the first message indicating multiple cells and the timing advance value for each of the multiple cells respectively includes: the first message indicating the identifier of each of the multiple cells.

[0281] As an embodiment, the identifier of each cell includes PCI.

[0282] As an embodiment, the identifier of each cell includes CGI.

[0283] As an embodiment, the multiple cells are all SpCells.

[0284] As an embodiment, the first message indicates a plurality of PCIs and a timing advance value for each of the plurality of PCIs;

[0285] The terminal maintains multiple timing advances.

[0286] As an embodiment, the multiple PCIs include at least one additional PCI.

[0287] As an embodiment, at least two of the multiple PCIs belong to the same service cell.

[0288] As an embodiment, the inactive state refers to being in an RRC inactive state.

[0289] As an embodiment, the RRC inactive state is an RRC_INACTIVE state.

[0290] As an embodiment, the first message indicating the freshness of the first timing advance value includes: the first message indicating that the first timing advance value is fresh.

[0291] As an embodiment, the first message indicating the freshness of the first timing advance value includes: the first message indicating that the first timing advance value is not fresh.

[0292] As an embodiment, the first timing advance value being fresh means that: the timing advance timer of the terminal has not expired.

[0293] As an embodiment, the first timing advance value is associated with the timing advance timer.

[0294] As an embodiment, the first timing advance value being out of date refers to: the timing advance timer of the terminal is expired.

[0295] As an embodiment, the first message indicating the freshness of the first timing advance value includes: the first message indicating whether a timing advance timer associated with the first timing advance value has expired.

[0296] As an embodiment, the first message indicating the freshness of the first timing advance value includes: the first message indicating how long a timing advance timer associated with the first timing advance value has expired.

[0297] As an embodiment, the freshness includes: whether it is recently acquired.

[0298] As an embodiment, the freshness includes: the time of acquisition.

[0299] As an embodiment, the first message indicates that the freshness of the first timing advance value includes: the first message indicates the acquisition time of the first timing advance value.

[0300] As an embodiment, the first message indicates the acquisition time of the first timing advance value through a timestamp.

[0301] As an embodiment, the timestamp indicates the time when the first timing advance value is obtained.

[0302] As an embodiment, the timestamp indicates the time when the first timing advance value is indicated.

[0303] As a sub-embodiment of this embodiment, the indicated time is the time indicated by the network.

[0304] As an embodiment, the timestamp is the system time.

[0305] As an embodiment, the timestamp is the Coordinated Universal Time.

[0306] As an embodiment, the timestamp is an absolute time.

[0307] As an embodiment, the timestamp is the time inside the terminal.

[0308] As an embodiment, the timestamp is not the air interface time.

[0309] As an embodiment, the advantage of the above method is that since the integrated circuit card is not directly connected to the wireless network and uses non-air interface time, it is beneficial for the integrated circuit card to more directly grasp the freshness of the first timing advance.

[0310] As an embodiment, the first message indicating the freshness of the first timing advance value includes: the first message indicating whether a timing advance timer associated with the first timing advance value has expired.

[0311] As an embodiment, the first message indicates whether a timing advance timer associated with the first timing advance value has expired, including: when the first message does not indicate that the first timing advance value has expired, the first timing advance value has not expired.

[0312] As an embodiment, the first message indicates whether a timing advance timer associated with the first timing advance value has expired, including: when the first message does not indicate that the first timing advance value has not expired, the first timing advance value has expired.

[0313] As an embodiment, the first message indicating the freshness of the first timing advance value includes: the first message indicating how long a timing advance timer associated with the first timing advance value has expired.

[0314] As an embodiment, the first message indicates how long a timing advance timer associated with the first timing advance value has expired, including: the first timing advance value is an expired timing advance.

[0315] As an embodiment, the expired timing advance is that a timing advance timer associated with the expired timing advance has expired.

[0316] As an embodiment, the expired timing advance is the timing advance obtained when accessing the network last time.

[0317] As an embodiment, the expired timing advance is the timing advance obtained when the RRC connection state was last established.

[0318] As an embodiment, the first message indicates that the freshness of the first timing advance value includes: how long the first message indicates that the first timing advance value has expired.

[0319] As an embodiment, when the first message indicates that the first timing advance value is a special value, the first timing advance value is not expired.

[0320] As an embodiment, the special value is 0.

[0321] As an embodiment, the special value is negative.

[0322] As an embodiment, the first message indicating how long the timing advance timer associated with the first timing advance value has expired includes: whether the first message indicates that the timing advance timer associated with the first timing advance value has expired for more than a first threshold.

[0323] As an embodiment, the first signaling indicates the first threshold.

[0324] As an embodiment, the first threshold is fixed.

[0325] As an embodiment, the first threshold is determined by the ME of the terminal itself.

[0326] As an embodiment, using the first threshold is beneficial to improving efficiency and avoiding misunderstanding.

[0327] As an embodiment, the first message indicating the freshness of the first timing advance value includes: whether the serving cell targeted by the first timing advance value indicated by the first message is the current serving cell.

[0328] As an embodiment, when the first message indicates the current cell of the terminal or the ME.

[0329] As an embodiment, when the first timing advance value is not for a current serving cell, the first timing advance value may be determined to be not fresh enough.

[0330] As an embodiment, the first message indicating whether the serving cell targeted by the first timing advance value is the current serving cell includes: the first message indicating that the first timing advance value is targeted at a serving cell other than the current serving cell.

[0331] As an embodiment, compared to when the first message indicates that the serving cell targeted by the first timing advance value is not the current serving cell, the first timing advance value is more fresh when the first message indicates that the serving cell targeted by the first timing advance value is the current serving cell.

[0332] As an embodiment, the first message indicating the freshness of the first timing advance value includes: the first message includes a sub-state of the ME, the sub-state is a sub-state of the inactive state, and the sub-state reflects the freshness of the first timing advance value.

[0333] As an embodiment, one of the sub-states indicates that the first timing advance value is fresh.

[0334] As an embodiment, one of the sub-states indicates that the first timing advance value is not fresh.

[0335] As an embodiment, one of the sub-states indicates that the first timing advance value expires soon.

[0336] As an embodiment, one of the sub-states indicates that the first timing advance value is long expired.

[0337] As an embodiment, one of the sub-states indicates that the first timing advance value has no reference significance.

[0338] As an embodiment, there is a mapping relationship between the sub-state and the freshness.

[0339] As an embodiment, the first message indicating the freshness of the first timing advance value includes: the first message indicating whether the terminal is in a stationary state.

[0340] As an embodiment, being in a stationary state includes being in a stationary state all the time.

[0341] As an embodiment, being in a stationary state includes being in a stationary state at least after obtaining the first timing advance value.

[0342] As an embodiment, whether it is in a stationary state depends on whether the measured RSRP (Reference Signal Receiving Power) meets the first criterion.

[0343] As an embodiment, the RSRP is for a serving cell.

[0344] As an embodiment, the RSRP is for the cell to which the timing advance is directed.

[0345] As an embodiment, the RSRP is for the cell to which the first timing advance value is directed.

[0346] As an embodiment, the first criterion is that the measured RSRP changes slowly.

[0347] As an embodiment, the first criterion is: a change in the measured RSRP is less than a given threshold.

[0348] As an embodiment, the given threshold is indicated by the network.

[0349] As an embodiment, the given threshold is determined by the terminal itself, for example, based on simulation.

[0350] As an embodiment, the given threshold is fixed by the protocol.

[0351] As an embodiment, the given threshold is determined based on experiments or road tests.

[0352] As an embodiment, the first message indicates the movement speed of the terminal.

[0353] As an embodiment, the first timing advance value is obtained according to the maintained timing advance adjustment.

[0354] As an embodiment, when the movement speed of the terminal is low enough, the terminal is determined to be in a stationary state.

[0355] As an embodiment, when the terminal is in a stationary state and a timing advance timer associated with the first timing advance value has expired, it can also be determined that the first timing advance value is fresh.

[0356] As an embodiment, when the terminal is in a stationary state and the first timing advance value is expired, it can also be determined that the first timing advance value is fresh.

[0357] As an embodiment, when the terminal is in a stationary state and the first timing advance value is acquired for a long time, it can also be determined that the first timing advance value is fresh.

[0358] As an embodiment, when the terminal is not in a stationary state and the first timing advance value is acquired for a long time, it can be determined that the first timing advance value is not fresh.

[0359] As an embodiment, the longer time is determined by the ME itself.

[0360] As an embodiment, the longer time is determined by the size of the cell.

[0361] As an embodiment, the signal strength of the longer wireless network is determined.

[0362] As an embodiment, the longer time is indicated by the UICC.

[0363] As an embodiment, the advantage of the above method is that the freshness of the first timing advance value can be evaluated more accurately through the static state.

[0364] Example 2

[0365] Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in the attached Figure 2 shown.

[0366] Attached Figure 2A diagram of a network architecture 200 for 5G NR, LTE (Long-Term Evolution) and LTE-A (Long-Term Evolution Advanced) systems is illustrated. The 5G NR or LTE network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS / EPS 200 may include one or more UEs (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet services 230. The 5GS / EPS may be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, 5GS / EPS provides packet-switched services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol terminations toward UE 201. gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (transmitting receiving node), or some other suitable term. gNB 203 provides an access point to 5GC / EPC 210 for UE 201. Examples of UE 201 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine type communication devices, land vehicles, cars, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE 201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term.gNB203 is connected to 5GC / EPC210 via the S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF213. MME / AMF / SMF211 is the control node that handles signaling between UE201 and 5GC / EPC210. ​​In general, MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW / UPF212, which itself is connected to P-GW / UPF213. P-GW provides UE IP address allocation and other functions. P-GW / UPF213 is connected to Internet service 230. Internet service 230 includes operator-corresponding Internet protocol services, which may specifically include Internet, Intranet, IMS (IP Multimedia Subsystem) and packet-switched streaming services.

[0367] As an embodiment, the terminal in the present application is UE201.

[0368] As an embodiment, the base station of the second node in the present application is gNB203.

[0369] As an embodiment, the wireless link from the UE201 to the NR Node B is an uplink.

[0370] As an embodiment, the wireless link from the NR Node B to UE201 is a downlink.

[0371] As an embodiment, the UE 201 includes a mobile phone.

[0372] As an embodiment, the UE201 is a dedicated device or special device with communication function.

[0373] As an embodiment, the gNB203 is a micro cell base station.

[0374] As an embodiment, the gNB203 is a pico cell base station.

[0375] As an embodiment, the gNB203 is a base station used in a home network.

[0376] As an embodiment, the gNB203 is a base station used in a private network.

[0377] Example 3

[0378] Embodiment 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture of the control plane 300 for the terminal (UE, gNB) and the second node (gNB, UE), or between two UEs is shown in three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to as PHY301 in this article. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the terminal and the second node and the two UEs through PHY301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets, and provides support for inter-zone mobility of the terminal between the second nodes. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between terminals. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second node and the terminal. The PC5-S (PC5 Signaling Protocol) sublayer 307 is responsible for processing the signaling protocol of the PC5 interface. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the terminal and the second node in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS flows and data radio bearers (DRBs) to support the diversity of services. SRB can be regarded as a service or interface provided by the PDCP layer to a higher layer, such as the RRC sublayer. In the NR system, SRBs include SRB1, SRB2, and SRB3, which are used to transmit different types of control signaling. SRB is a bearer between the UE and the access network, and is used to transmit control signaling including RRC signaling between the UE and the access network. SRB1 has special significance for the UE. After each UE establishes an RRC connection, there will be SRB1 for transmitting RRC signaling. Most of the signaling is transmitted through SRB1. If SRB1 is interrupted or cannot be used, the UE must perform RRC reconstruction. SRB2 is generally only used to transmit NAS signaling or security-related signaling. The UE may not configure SRB3. Except for emergency services, the UE must establish an RRC connection with the network for subsequent communications. Although not shown, the terminal may have several upper layers above the L2 layer 355. In addition, it also includes a network layer (e.g., IP layer) terminated at the P-GW on the network side and an application layer terminated at the other end of the connection (e.g., remote UE, server, etc.). The protocol layer may also be referred to as a protocol sublayer. Attached. Figure 3 What is shown is a general protocol layer structure, and the nodes used in this application may lack some protocol layers.

[0379] As an example, Figure 3 The wireless protocol architecture in is applicable to the terminal described in this application.

[0380] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0381] As an embodiment, the first signaling in the present application is generated on an integrated circuit card.

[0382] As an embodiment, the first message in the present application is generated in the ME.

[0383] Example 4

[0384] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in the attached figure. Figure 4 shown. Figure 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0385] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, and may optionally also include a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454 and an antenna 452.

[0386] The second communication device 410 includes a controller / processor 475 , a memory 476 , a receiving processor 470 , a transmitting processor 416 , and may optionally also include a multi-antenna receiving processor 472 , a multi-antenna transmitting processor 471 , a transmitter / receiver 418 and an antenna 420 .

[0387] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, the upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 (Layer-2) layer. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for the retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0388] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

[0389] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0390] In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the reception function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 storing program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0391] As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor, and the first communication device 450 apparatus at least: receives a first signaling through a first interface; the first signaling requests the local information of the terminal; as a response to receiving the first signaling, sends a first message through the first interface, the first message indicates that the ME is in an inactive state, the first message includes a first timing advance value, and the first message indicates the freshness of the first timing advance value; wherein the first interface is an interface between an integrated circuit card of the terminal and a mobile equipment (Mobile Equipment, ME) of the terminal.

[0392] As an embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates an action when executed by at least one processor, and the action includes: receiving a first signaling through a first interface; the first signaling requests the local information of the terminal; as a response to receiving the first signaling, sending a first message through the first interface, the first message indicating that the ME is in an inactive state, the first message including a first timing advance value, and the first message indicating the freshness of the first timing advance value; wherein the first interface is an interface between an integrated circuit card of the terminal and a mobile equipment (Mobile Equipment, ME) of the terminal.

[0393] As an embodiment, the first communication device 450 corresponds to the terminal in this application.

[0394] As an embodiment, the second communication device 410 corresponds to the second node in this application.

[0395] As an embodiment, the first communication device 450 is a UE.

[0396] As an embodiment, the first communication device 450 is a mobile phone.

[0397] As an embodiment, the second communication device 450 is a relay.

[0398] As an embodiment, the second communication device 410 is a base station.

[0399] As an embodiment, neither the first signaling nor the first message is transmitted through an air interface.

[0400] As an embodiment, the first signaling and the first message are both transmitted through the first interface.

[0401] As an embodiment, the signaling or message in the random access process is transmitted via an air interface.

[0402] Example 5

[0403] Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 5 Attached Figure 5 In the example, U01 corresponds to the ME of the present application, and U02 corresponds to the integrated circuit card of the present application. It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in the present application, wherein the steps in F51 are optional.

[0404] for ME U01 , receiving a first signaling in step S5101; sending a first message in step S5102; initiating a first random access process in step S5103.

[0405] for Integrated Circuit Card U02 , sending a first signaling in step S5201; receiving a first message in step S5202.

[0406] In Example 5, the first signaling requests local information of the terminal; the first message indicates that the ME is in an inactive state, the first message includes a first timing advance value, and the first message indicates the freshness of the first timing advance value; wherein the first interface is an interface between the integrated circuit card of the terminal and the mobile equipment (MobileEquipment, ME) of the terminal.

[0407] As an embodiment, in response to receiving the first signaling, the ME U01 executes step S5102.

[0408] As an embodiment, the ME U01 and the integrated circuit card U02 both belong to the terminal.

[0409] As an embodiment, a typical integrated circuit card is provided by an operator, but the integrated circuit card U02, such as a SIM card, is necessary for the terminal to access the network. The integrated circuit card U02 and the ME U01 together constitute a terminal that can access the wireless network.

[0410] As an embodiment, the integrated circuit card U02 triggers the first signaling according to an internal algorithm or internal demand.

[0411] As an embodiment, the internal requirements include positioning requirements.

[0412] As an embodiment, the integrated circuit card U02 triggers the first signaling according to the instruction of the core network.

[0413] As an embodiment, the communication between the integrated circuit card U02 and the core network uses a bearer-independent protocol.

[0414] As an embodiment, the integrated circuit card U02 is provided by the operator of the core network.

[0415] As an embodiment, the core network includes a location management functional unit.

[0416] As an embodiment, the core network includes a billing function unit.

[0417] As an embodiment, the core network includes a monitoring unit.

[0418] As an embodiment, the communication between the integrated circuit card U02 and the core network is transparent to the ME U01.

[0419] As an embodiment, the first message is a response to the first signaling.

[0420] As an embodiment, upon receiving the first signaling, the ME U01 does not need to obtain or re-acquire timing advance on the air interface.

[0421] As a sub-embodiment of this embodiment, the timing advance is the timing advance of the first cell.

[0422] As a sub-embodiment of this embodiment, the first signaling indicates the first cell.

[0423] As a sub-embodiment of this embodiment, the first signaling requests a timing advance of the first cell.

[0424] As an embodiment, the above method has the advantages of providing quick feedback and reducing latency.

[0425] As an embodiment, upon receiving the first signaling, the ME U01 obtains or re-obtains timing advance on the air interface.

[0426] As a sub-embodiment of this embodiment, the timing advance is the timing advance of the first cell.

[0427] As a sub-embodiment of this embodiment, the first signaling indicates the first cell.

[0428] As a sub-embodiment of this embodiment, the first signaling requests a timing advance of the first cell.

[0429] As a sub-embodiment of this embodiment, obtaining or re-obtaining the timing advance on the air interface is obtaining the latest timing advance.

[0430] As a sub-embodiment of this embodiment, obtaining or re-obtaining timing advance on the air interface includes initiating a random access procedure.

[0431] As a sub-embodiment of this embodiment, obtaining or re-obtaining the timing advance on the air interface requests the network to indicate the timing advance.

[0432] As an embodiment, the first random access process includes sending a random access signal.

[0433] As an embodiment, the first random access process includes receiving signaling from the network indicating timing advance.

[0434] As an embodiment, the first random access procedure uses an air interface.

[0435] As an embodiment, the first random access process is for the network.

[0436] As an embodiment, the first random access process is to obtain or regain timing advance.

[0437] As an embodiment, when the timing advance maintained by the terminal does not include the timing advance requested by the first signaling, the ME U01 obtains or re-obtains the timing advance on the air interface.

[0438] As an embodiment, when the terminal does not maintain a valid timing advance, the ME U01 obtains or re-acquires the timing advance over the air interface.

[0439] As an embodiment, whether to obtain or re-acquire the timing advance on the air interface depends on whether the timing advance release maintained by the terminal is valid.

[0440] As an embodiment, when the terminal maintains a valid timing advance, it does not trigger obtaining or re-obtaining the timing advance on the air interface. Otherwise, the first signaling triggers obtaining or re-obtaining the timing advance on the air interface.

[0441] As an embodiment, whether to obtain or regain timing advance on the air interface depends on whether the timing advance release requested by the first signaling maintained by the terminal is valid.

[0442] As an embodiment, when the terminal maintains a valid timing advance requested by the first signaling, it does not trigger obtaining or re-obtaining the timing advance on the air interface; otherwise, the first signaling triggers obtaining or re-obtaining the timing advance on the air interface.

[0443] As an embodiment, whether to obtain or re-acquire the timing advance on the air interface depends on the freshness of the timing advance maintained by the terminal.

[0444] As an embodiment, when the terminal maintains a sufficiently fresh timing advance, it does not trigger obtaining or re-obtaining the timing advance on the air interface. Otherwise, the first signaling triggers obtaining or re-obtaining the timing advance on the air interface.

[0445] As an embodiment, the benefit of obtaining or re-obtaining the timing advance is that a fresh timing advance can be obtained and reported to the integrated circuit card U02.

[0446] As an embodiment, the timing delay requested by the first signaling is a timing delay for the cell requested by the first signaling.

[0447] As an embodiment, the timing delay requested by the first signaling is a timing delay for a timing advance group requested by the first signaling.

[0448] As an embodiment, being sufficiently fresh means that the start time of the timing advance timer associated with the timing advance is no longer than a threshold from the current time.

[0449] As a sub-embodiment of this embodiment, the threshold is indicated by the network, or indicated by the first signaling, or determined by ME U01 itself.

[0450] As an embodiment, the sufficiently fresh means that the expiration time of the timing advance timer associated with the timing advance is not shorter than a certain threshold from the current time.

[0451] As a sub-embodiment of this embodiment, the certain threshold is indicated by the network, or indicated by the first signaling, or determined by ME U01 itself.

[0452] As an embodiment, the benefit of triggering to obtain or re-obtain the timing advance is that the most accurate timing delay can be obtained, thereby improving performance.

[0453] As an embodiment, the receipt of the first message triggers the integrated circuit card U02 to update the access control parameters.

[0454] As an embodiment, the receipt of the first message triggers the integrated circuit card U02 to adjust the billing policy.

[0455] As an embodiment, the receipt of the first message triggers the integrated circuit card U02 to send a first report to the network.

[0456] As a sub-embodiment of this embodiment, the network includes a core network.

[0457] As an embodiment, the first report indicates the location of the terminal.

[0458] As an embodiment, the first report indicates entering into a new billing mode.

[0459] As an embodiment, the first report indicates entering into a new access control mode.

[0460] As an embodiment, the first report indicates a predicted trajectory or position.

[0461] As an embodiment, the first report indicates a predicted timing advance.

[0462] As an embodiment, the first signaling triggers the step S5103.

[0463] Example 6

[0464] Embodiment 6 illustrates a schematic diagram of a terminal structure according to an embodiment of the present application, as shown in the attached Figure 6 shown.

[0465] Attached Figure 6 The structure of a terminal is shown, and the terminal is a UE.

[0466] As an embodiment, a user equipment (UE) is a device that allows a user to access network services. The interface between the user equipment and the network is an air interface. A user equipment can be further subdivided into at least one domain, and different domains are separated by reference points. The user equipment is subdivided into an integrated circuit card domain and a mobile equipment (ME) domain. The mobile equipment domain can be further subdivided into one or more mobile terminals and terminal equipment components to show the connection relationship between different functional groups.

[0467] As an example, what is a reference point and how to distinguish different fields through a reference point is a prior art.

[0468] As an embodiment, one mobile station (MS) corresponds to one UE.

[0469] As an embodiment, a mobile equipment (Mobile Equipment, ME) is functionally divided into multiple entities or components, namely, one or more mobile terminals (Mobile Termination, MT) and one or more terminal equipment (Terminal Equipment, TE).

[0470] As an example, TE refers to a device that provides necessary functions for a user to operate an access protocol. These functions are a user-side function group on the user and network interface.

[0471] As an embodiment, an example of the terminal device is a keyboard.

[0472] As an embodiment, the MT is a component of the ME used to support functions related to managing the PLMN access interface.

[0473] As an embodiment, MT is implemented as a functional entity.

[0474] As an embodiment, an example of the MT is a functional component consisting of a baseband, a radio frequency, a processor, a memory and corresponding programs.

[0475] As an embodiment, the access interface includes 3GPP and non-3GPP interfaces.

[0476] As an example, Figure 6 It can be seen that the first interface is an interface inside the UE.

[0477] As an embodiment, the integrated circuit card includes a UICC.

[0478] As an embodiment, the integrated circuit card includes a SIM application.

[0479] As an example, Figure 6 The air interface in is the Uu interface.

[0480] As an embodiment, the Uu interface is an air interface defined by 3GPP.

[0481] As an example, Figure 6 The ME in the embodiment includes only one MT, but the method proposed in the present application is applicable to the case where one ME includes multiple MTs.

[0482] As an example, Figure 6 The ME in the example only includes one TE, but the method proposed in this application is applicable to the case where one ME includes multiple TEs.

[0483] As an example, Figure 6 The network includes a wireless access network.

[0484] As an embodiment, there may be an interface between the MT and the TE.

[0485] As an embodiment, the method proposed in the present application is applicable to a scenario where the terminal includes multiple integrated circuit cards, and the integrated circuit card in the present application is any one of the multiple integrated circuit cards.

[0486] Example 7

[0487] Embodiment 7 illustrates a schematic diagram of timing advance according to an embodiment of the present application, as shown in the attached Figure 7 shown.

[0488] Attached Figure 7 The principle of timing advance is shown. The timing advance in this application also complies with other definitions, interpretations and applications of timing advance in 3GPP, if any.

[0489] As an example, Figure 7 The rectangle in the figure indicates a wireless frame. Since different UEs are at different distances from the transmitting point, the downlink wireless frame arrives at different UEs at different times due to propagation delay. For example, it takes T1 to reach UE1 and T2 to reach UE2.

[0490] As an embodiment, when the uplink transmission time of UE1 is earlier than the reception time of the downlink wireless frame by 2x T1, the time when the uplink wireless frame of UE1 arrives at the downlink transmission point is equal to the transmission time of the downlink wireless frame. Similarly, when the uplink transmission time of UE2 is earlier than the reception time of the downlink wireless frame by 2x T2, the time when the uplink wireless frame of UE1 arrives at the downlink transmission point is equal to the transmission time of the downlink wireless frame. At this time, the uplink wireless frames of UE1 and UE2 arrive at the downlink transmission point at the same time, that is, they arrive synchronously.

[0491] As an embodiment, the timing advance is twice the propagation delay.

[0492] As an embodiment, the network may also configure the timing advance to be twice the propagation delay plus an offset.

[0493] As an embodiment, the offset is the same for different UEs.

[0494] As an embodiment, the one offset is fixed.

[0495] As an example, from the attached Figure 7 It can be seen that different UEs have different timing advances. When the UE moves, the timing advance also needs to be updated accordingly, so the timing advance needs to be maintained.

[0496] As an embodiment, the transmitting point includes the first cell.

[0497] As an embodiment, the transmitting point includes a cell.

[0498] As an embodiment, the transmitting point includes an antenna.

[0499] As an embodiment, the transmitting point includes a base station.

[0500] As an embodiment, the transmitting point is downlink.

[0501] As an embodiment, the terminal is UE1.

[0502] As an embodiment, the terminal is UE2.

[0503] As an embodiment, for different downlink transmission points, the terminal needs to maintain corresponding timing advances.

[0504] Example 8

[0505] Embodiment 8 illustrates a schematic diagram of a terminal maintaining multiple timing advances according to an embodiment of the present application, as shown in the attached figure. Figure 8 shown.

[0506] As an example, Figure 8 Node A in corresponds to the second node of this application.

[0507] As an example, Figure 8 Node A in corresponds to a node other than the second node in this application.

[0508] As an example, Figure 8 Node B in the UDP is a downlink transmitting node.

[0509] As an embodiment, the downlink transmission point includes a cell.

[0510] As an embodiment, the downlink transmission point includes an antenna.

[0511] As an embodiment, the downlink transmission point includes a base station.

[0512] As an embodiment, the terminal maintains a timing advance for the node A.

[0513] As an embodiment, the terminal maintains a timing advance for the Node B.

[0514] As an embodiment, the timing advance for the node A and the timing advance for the node B are different.

[0515] As an embodiment, the node A corresponds to the PCell of the terminal, and the node B corresponds to the PSCell of the terminal.

[0516] As an embodiment, the node B corresponds to the PCell of the terminal, and the node A corresponds to the PSCell of the terminal.

[0517] As an embodiment, the node A corresponds to the PCell of the terminal, and the node B corresponds to the additionalPCI of the PCell of the terminal.

[0518] As an embodiment, the node A corresponds to the PSCell of the terminal, and the node B corresponds to the additionalPCI of the PSCell of the terminal.

[0519] As an embodiment, one of the node A and the node B is a SpCell and the other is a SCell.

[0520] As an embodiment, the first message is required to indicate the first cell.

[0521] As an example, in the attached Figure 8 In the scenario where the terminal maintains multiple timing advances, the first message indicates the first cell.

[0522] As an embodiment, the identifiers of the node A and the node B are different.

[0523] As an embodiment, the identifier of the node A and the node B is PCI.

[0524] As an embodiment, the identifiers of the node A and the node B are CGI.

[0525] As an embodiment, the identifiers of the node A and the node B are CGI and PCI.

[0526] As an embodiment, the CGI identifiers of the identifiers of the node A and the node B are the same, but the PCI identifiers are different.

[0527] As a sub-embodiment of this embodiment, the PCI of the node B is additionalPCI.

[0528] As a sub-embodiment of this embodiment, the PCI of the node B is the additional PCI of the node A.

[0529] As an embodiment, the CGI identifiers of the identifiers of the node A and the node B are different.

[0530] As a sub-embodiment of this embodiment, the PCIs of the identifiers of the node A and the node B are different.

[0531] As a sub-embodiment of this embodiment, one of the node A and the node B is the PCell of the terminal, and the other is the PSCell.

[0532] As a sub-embodiment of this embodiment, the node A is the PCell of the terminal.

[0533] As an embodiment, the above method helps to accurately report the object to which the first timing advance value is directed.

[0534] As an embodiment, the freshness of the multiple timing advances maintained by the terminal may be different.

[0535] As an embodiment, the first timing advance value is the latest one among the timing advances maintained by the terminal.

[0536] As an embodiment, the above method helps the UICC to obtain the latest timing advance, thereby obtaining the most reliable positioning.

[0537] Example 9

[0538] Embodiment 9 illustrates a schematic diagram of a first message indicating whether there is at least one of an ongoing session, ongoing data transmission, and an ongoing random access process according to an embodiment of the present application, as shown in the attached Fig. 9 shown.

[0539] As an embodiment, the first message indicates whether there is an ongoing session.

[0540] As an embodiment, the first message indicates that there is an ongoing session.

[0541] As an embodiment, the ongoing session is a session conducted in an RRC inactive state.

[0542] As an embodiment, the ongoing session includes a small data transfer.

[0543] As an embodiment, the ongoing session includes multicast service reception.

[0544] As an embodiment, the first message indicating that there is an ongoing session is conducive to determining that the first timing advance value has a high freshness.

[0545] As an embodiment, the first message indicating that there is no ongoing session is conducive to determining that the first timing advance value is not fresh.

[0546] As an embodiment, the first message indicates ongoing data transmission.

[0547] As an embodiment, the data transmission includes small data transmission.

[0548] As an embodiment, the data transmission includes data transmission in an RRC inactive state.

[0549] As an embodiment, the data transmission includes uplink data transmission.

[0550] As an embodiment, the first message indicating that there is ongoing data transmission is conducive to determining that the first timing advance value has a high freshness.

[0551] As an embodiment, the first message indicating that there is no ongoing data transmission is conducive to determining that the first timing advance value is not fresh.

[0552] As an embodiment, the first message indicates that there is an ongoing random access process.

[0553] As an embodiment, the first message indicates that there is no random access procedure in progress.

[0554] As an embodiment, the first message indicates the purpose of the ongoing random access procedure.

[0555] As an embodiment, the first message is sent after receiving the timing advance command.

[0556] As an embodiment, the first message is in a pending state and is not sent until a timing advance command is received.

[0557] As an embodiment, the first message is sent immediately after receiving the first signaling, without waiting for the ongoing random access process to be completed.

[0558] As an embodiment, the first message is sent immediately after receiving the first signaling without waiting for the timing advance command.

[0559] As an embodiment, the timing advance command belongs to a random access process.

[0560] As an embodiment, the first message indicates that there is an ongoing random access process, which helps to trigger the integrated circuit card to send a new signaling requesting timing advance to obtain the latest timing advance.

[0561] Example 10

[0562] Embodiment 10 illustrates a schematic diagram of a first timing advance value obtained by adjusting the timing advance maintained by a terminal according to an embodiment of the present application, as shown in the attached figure. Fig.10 shown.

[0563] As an embodiment, the timing advance maintained by the terminal is a timing advance for the first cell.

[0564] As an embodiment, the first timing advance value may be equal to the timing advance maintained by the terminal.

[0565] As an embodiment, the first timing advance value is the sum of the timing advance maintained by the terminal and an offset.

[0566] As an embodiment, the one offset is fixed.

[0567] As an embodiment, the offset is indicated by the first signaling.

[0568] As an embodiment, the one offset is obtained by an air interface.

[0569] As an embodiment, the offset is determined by the movement direction and movement speed of the terminal.

[0570] As an embodiment, when the terminal moves toward the corresponding transmission point, the offset is negative, otherwise it is positive.

[0571] As an embodiment, the movement speed and the running time of the timing advance timer corresponding to the timing advance maintained by the terminal are used together to determine the one offset.

[0572] As an embodiment, the absolute value of the offset is equal to the product of the running time of the timing advance timer corresponding to the timing advance maintained by the terminal and the moving speed component toward the transmission point corresponding to the timing advance.

[0573] As an embodiment, the advantage of the above method is that a more accurate timing advance value can be reported.

[0574] As an embodiment, the first timing advance value is a predicted value predicted based on the timing advance maintained by the terminal.

[0575] As an embodiment, the ME makes the prediction based on an artificial intelligence algorithm.

[0576] As an embodiment, the input of the artificial intelligence algorithm includes channel measurement results.

[0577] As an embodiment, the input to the artificial intelligence algorithm includes multiple timing advances.

[0578] As an embodiment, the ME makes adjustments according to the accuracy requirement of the timing advance requested by the first signaling to obtain the first timing advance value.

[0579] As an embodiment, the first message indicates whether the first timing advance value is adjusted based on the timing advance maintained by the terminal.

[0580] As an embodiment, the first timing advance value is obtained from multiple timing advances.

[0581] As an embodiment, the first timing advance value is an average of multiple timing advances.

[0582] Embodiment 11

[0583] Embodiment 11 illustrates a structural block diagram of a processing device used in a terminal according to an embodiment of the present application; Fig.11 As shown in the attached Fig.11 In the embodiment, the processing device 1100 in the terminal includes a first receiver 1101, a first transmitter 1102 and a first processor 1103.

[0584] In embodiment 11, the terminal includes: one or more processors and a memory;

[0585] The memory is coupled to the one or more processors, and the memory is used to store computer program codes, wherein the computer program codes include computer instructions, and the one or more processors call the computer instructions to cause the terminal to execute at least:

[0586] Receiving a first signaling through a first interface; the first signaling requests local information of the terminal;

[0587] In response to receiving the first signaling, sending a first message through the first interface, the first message indicating that the ME is in an inactive state, the first message including a first timing advance value, and the first message indicating the freshness of the first timing advance value;

[0588] The first interface is an interface between the integrated circuit card of the terminal and the mobile equipment (Mobile Equipment, ME) of the terminal.

[0589] As an embodiment, the first message indicates that the freshness of the first timing advance value includes: the first message indicates the acquisition time of the first timing advance value.

[0590] As an embodiment, the first message indicating the freshness of the first timing advance value includes: the first message indicating whether a timing advance timer associated with the first timing advance value has expired.

[0591] As an embodiment, the first message indicating the freshness of the first timing advance value includes: the first message indicating how long a timing advance timer associated with the first timing advance value has expired.

[0592] As an embodiment, the first message indicating the freshness of the first timing advance value includes: whether the serving cell targeted by the first timing advance value indicated by the first message is the current serving cell.

[0593] As an embodiment, the first message indicating the freshness of the first timing advance value includes: the first message includes a sub-state of the ME, the sub-state is a sub-state of the inactive state, and the sub-state reflects the freshness of the first timing advance value.

[0594] As an embodiment, the first message indicates whether there is at least one of an ongoing session, an ongoing data transmission, and an ongoing random access process.

[0595] As an embodiment, the first message indicating the freshness of the first timing advance value includes: the first message indicating whether the terminal is in a stationary state.

[0596] As an embodiment, initiating a random access process on an air interface as a response to receiving the first signaling includes: receiving a timing advance command;

[0597] The first timing advance value depends on the timing advance command.

[0598] As an embodiment, the first timing advance value is adjusted by the timing advance maintained by the terminal.

[0599] As an embodiment, the terminal is a user equipment (UE).

[0600] As an embodiment, the terminal is a mobile phone.

[0601] As an embodiment, the terminal is a communication device supporting low latency.

[0602] As an embodiment, the terminal is an industrial communication device.

[0603] As an embodiment, the terminal is an Internet of Things terminal or an industrial Internet of Things terminal.

[0604] As an embodiment, the first receiver 1101 includes at least one of the antenna 452, receiver 454, receiving processor 456, multi-antenna receiving processor 458, controller / processor 459, memory 460, or data source 467 in Example 4.

[0605] As an embodiment, the first transmitter 1102 includes at least one of the antenna 452, transmitter 454, transmit processor 468, multi-antenna transmit processor 457, controller / processor 459, memory 460, or data source 467 in Embodiment 4.

[0606] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The user equipment, terminal and UE in the present application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, wireless sensors, Internet cards, Internet of Things terminals, RFID terminals, NB-IoT terminals, MTC (Machine Type Communication, machine type communication) terminals, eMTC (enhancedMTC, enhanced MTC) terminals, data cards, Internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers, satellite communication equipment, ship communication equipment, NTN user equipment and other wireless communication equipment. The base stations or system equipment in this application include but are not limited to macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B) NR Node B, TRP (Transmitter Receiver Point, sending and receiving node), NTN base stations, satellite equipment, flight platform equipment and other wireless communication equipment.

[0607] The present invention may be implemented in other specified forms without departing from its core or essential features. Therefore, the embodiments disclosed herein should be considered as illustrative rather than restrictive in any way. The scope of the invention is determined by the appended claims rather than the preceding description, and all modifications within their equivalent meanings and regions are considered to be included therein.

Claims

1. A method in a terminal for wireless communication, wherein: include: Receiving first signaling through a first interface; The first signaling requests local information of the terminal; In response to receiving the first signaling, sending a first message through the first interface, the first message indicating that the ME is in an inactive state, the first message including a first timing advance value, and the first message indicating the freshness of the first timing advance value; The first interface is an interface between the integrated circuit card of the terminal and the mobile equipment (Mobile Equipment, ME) of the terminal.

2. The method in the terminal according to claim 1, characterized in that: The first message indicating the freshness of the first timing advance value includes: the first message indicating the acquisition time of the first timing advance value.

3. The method in the terminal according to claim 1, characterized in that: The first message indicating the freshness of the first timing advance value includes: the first message indicating whether a timing advance timer associated with the first timing advance value has expired.

4. The method in a terminal according to claim 1 or 3, characterized in that: The first message indicating the freshness of the first timing advance value includes: the first message indicating how long a timing advance timer associated with the first timing advance value has expired.

5. The method in a terminal according to any one of claims 1 to 4, characterized in that: The first message indicating the freshness of the first timing advance value includes: whether the serving cell for which the first timing advance value is indicated by the first message is a current serving cell.

6. The method in a terminal according to any one of claims 1 to 5, characterized in that: The first message indicating the freshness of the first timing advance value includes: the first message includes a sub-state of the ME, the sub-state is a sub-state of the inactive state, and the sub-state reflects the freshness of the first timing advance value.

7. The method in a terminal according to any one of claims 1 to 6, characterized in that: The first message indicates whether there is at least one of an ongoing session, an ongoing data transmission, and an ongoing random access procedure.

8. The method in a terminal according to any one of claims 1 to 9, characterized in that: The first message indicating the freshness of the first timing advance value includes: the first message indicating whether the terminal is in a stationary state.

9. The method in a terminal according to any one of claims 1 to 8, characterized in that: Initiating a random access procedure on an air interface in response to receiving the first signaling, including: receiving a timing advance command; The first timing advance value depends on the timing advance command.

10. A terminal for wireless communication, wherein: include: The terminal includes: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program codes, where the computer program codes include computer instructions. The one or more processors call the computer instructions to enable the terminal to execute the method according to any one of claims 1 to 9.

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