Method used in terminal for wireless communication, and equipment

Abstract

Disclosed in the present application are a method used in a terminal for wireless communication, and equipment. The method comprises: receiving first signaling by means of a first interface, wherein the first signaling requests local information of a terminal; and in response to receiving the first signaling, sending a first message by means of the first interface, wherein the first message indicates that mobile equipment (ME) is in an inactive state, the first message comprises a first timing advance value, the first message indicates the freshness of the first timing advance value, and the first interface is an interface between an integrated circuit card of the terminal and the ME of the terminal. The present application can indicate timing advance information more accurately.

Description

A method and apparatus in a terminal used for wireless communication

[0001] The present application claims priority from the Chinese patent application No. 202410718105.4 filed on June 04, 2024 with the State Intellectual Property Office, the title of which is "A method and apparatus in a terminal used for wireless communication", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to a method for reporting timing advance on an interface between an integrated circuit card and a mobile device in a cellular wireless communication terminal. BACKGROUND

[0003] The application scenarios of future wireless communication systems are increasingly diversified, and different application scenarios have different performance requirements for systems. In order to meet the different performance requirements of various application scenarios, it is decided at the 72nd plenary meeting of 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) to study the New Radio (NR) (or Fifth Generation, 5G), and the NR WI (Work Item) is passed at the 75th plenary meeting of 3GPP RAN, and the standardization work of NR is started.

[0004] In communication, whether it is LTE (Long Term Evolution) or 5G NR, it involves accurate reception of reliable information, optimized energy efficiency, determination of information effectiveness, flexible resource allocation, scalable system structure, efficient non-access layer information processing, low service interruption and drop rate, support for low power consumption, which is of great significance to the normal communication of base stations and user equipment, reasonable scheduling of resources, balancing of system load. It can be said that it is the cornerstone of high throughput, meeting the communication needs of various services, improving spectrum utilization, and improving service quality. Whether it is eMBB (enhanced Mobile BroadBand), URLLC (Ultra Reliable Low Latency Communication) or eMTC (enhanced Machine Type Communication) is indispensable. At the same time, in IIoT (Industrial Internet of Things), in V2X (Vehicular to X) communication, in Device to Device communication, in unlicensed spectrum communication, in user communication quality monitoring, in network planning optimization, in TN (Territerial Network) communication, in Dual connectivity system, in wireless resource management and multi-antenna codebook selection, in signaling design, neighbor management, service management, and in beamforming, there are extensive demands. The transmission mode of information is divided into broadcast and unicast, and the two transmission modes are indispensable for 5G system because they are very helpful to meet the above requirements.

[0005] With the increasing complexity and scenarios of the system, higher requirements are put forward for reducing the interruption rate, reducing the delay, enhancing the reliability, enhancing the stability of the system, the flexibility of the service, and the power saving. At the same time, when designing the system, the compatibility between different systems and different versions also needs to be considered. SUMMARY

[0006] Researchers have found that when the ME needs to report the timing advance on the integrated circuit card and the mobile device interface, how to more accurately report the timing advance information, and further, how to indicate the freshness of the timing advance value, is a problem to be solved. In view of the above problems, the present application provides a solution.

[0007] It should be noted that the embodiments in any node and the features in the embodiments of the present application can be applied to any other node without conflict. The embodiments and the features in the embodiments of the present application can be combined with each other without conflict. At the same time, the method proposed in the present application can also be used to solve other problems in communication, such as problems in NR evolution and 6G system.

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

[0009] As an embodiment, the explanation of the terminology in the present application refers to the definition of the specification agreement TS37 series of 3GPP.

[0010] As an embodiment, the explanation of the terminology in the present application refers to the definition of the specification agreement TS31 series of 3GPP.

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

[0012] receiving 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, the first message indicating the freshness of the first timing advance value.

[0014] The first interface is an interface between an integrated circuit card of the terminal and a 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 timing advance information to an integrated circuit card or a SIM (Subscriber Identity Module), especially the freshness of the timing advance value.

[0016] As an embodiment, the benefits of the above method include: the reported timing advance information is more accurate, more usable, more practical, better supports 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) based services, is conducive to more accurate billing, and is conducive to avoiding misoperation.

[0017] Specifically, according to an aspect of the present application, the first message indicating the freshness of the first TA value comprises: the first message indicating a time of acquisition of the first TA value.

[0018] Specifically, according to an aspect of the present application, the first message indicating the freshness of the first TA value comprises: the first message indicating whether a TA timer associated with the first TA value is expired.

[0019] Specifically, according to an aspect of the present application, the first message indicating the freshness of the first TA value comprises: the first message indicating how long the TA timer associated with the first TA value is expired.

[0020] Specifically, according to an aspect of the present application, the first message indicating the freshness of the first TA value comprises: the first message indicating whether a serving cell to which the first TA value is applied is a current serving cell.

[0021] Specifically, according to an aspect of the present application, the first message indicating the freshness of the first TA value comprises: the first message comprising a sub-state of the ME, the sub-state being a sub-state of the inactive state, the sub-state reflecting the freshness of the first TA value.

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

[0023] Specifically, according to an aspect of the present application, the first message indicating the freshness of the first TA value comprises: the first message indicating whether the terminal is in a stationary state.

[0024] Specifically, according to an aspect of the present application, in response to receiving the first signaling, initiating a random access procedure over an air interface comprises: receiving a TA command;

[0025] wherein the first TA value is dependent on the TA command.

[0026] Specifically, according to an aspect of the present application, the first TA value is adjusted by a TA maintained by the terminal.

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

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

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

[0030] Specifically, according to an 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 comprises one or more processors and a memory;

[0033] The memory is coupled with the one or more processors, and the memory is configured to store computer program codes, the computer program codes comprising computer instructions, the one or more processors invoking the computer instructions to cause the terminal to perform the method according to any one of the claims.

[0034] As an embodiment, compared with the conventional scheme, the present application has the following advantages:

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

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

[0037] The application of the SIM card is an important service provided by the network operator. The method proposed in the present application is beneficial to the network to better provide services.

[0038] Avoids confusion and misoperation. BRIEF DESCRIPTION OF DRAWINGS

[0039] Other features, objects, and advantages of the application will become more apparent from the following detailed description when read in conjunction with the accompanying drawings:

[0040] Fig. 1 shows a schematic diagram of receiving a first signaling via a first interface and transmitting a first message via the first interface according to an embodiment of the application;

[0041] Fig. 2 shows a schematic diagram of a network architecture according to an embodiment of the application;

[0042] Fig. 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user and control planes according to an embodiment of the application;

[0043] Fig. 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the application;

[0044] Fig. 5 shows a flow chart of a wireless signal transmission according to an embodiment of the application;

[0045] Fig. 6 shows a schematic diagram of a terminal structure according to an embodiment of the application;

[0046] Fig. 7 shows a schematic diagram of a timing advance according to an embodiment of the application;

[0047] Fig. 8 shows a schematic diagram of a terminal maintaining multiple timing advances according to an embodiment of the application;

[0048] Fig. 9 shows a schematic diagram of a first message indicating whether there is at least one of an ongoing session, an ongoing data transmission and an ongoing random access procedure according to an embodiment of the application;

[0049] Fig. 10 shows a schematic diagram of a timing advance adjustment resulting from a first timing advance value maintained by a terminal according to an embodiment of the application;

[0050] Fig. 11 shows a schematic diagram of a processing device for use in a terminal according to an embodiment of the application.

[0051] Embodiments

[0052] The technical solutions of the present application will be further described below in conjunction with the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0053] Embodiment 1

[0054] Embodiment 1 illustrates a flowchart of receiving a first signaling via a first interface, and sending a first message via the first interface, according to an embodiment of the present application, as shown in FIG. 1. In FIG. 1, each block represents a step, and it is particularly emphasized that the order of the blocks in the figure does not represent the time sequence between the steps represented.

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

[0056] The first signaling requests local information of the terminal, and as a response to receiving the first signaling, the step 102 is performed, 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. The first interface is an interface between an integrated circuit card of the terminal and a 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 first cell depends on the number of timing advances maintained by the terminal.

[0060] As an embodiment, the meaning of whether the first message indicates the first cell depending 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 a user equipment (UE).

[0064] As an embodiment, any parameter in the present application is either configured by a network or can be generated by the terminal according to an internal algorithm, for example, 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 one embodiment, the value of a timer is the running time of the timer when it is not intervened.

[0067] As one embodiment, the value of any parameter in this application, including but not limited to the value of a timer, the value of a counter, is finite, unless specifically stated otherwise.

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

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

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

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

[0072] As one embodiment, this application is for NR.

[0073] As one embodiment, this application is for a wireless communication network of NR evolution.

[0074] As one embodiment, a serving cell refers to a cell in which a UE camps. Performing a cell search includes that the UE searches for a suitable cell of a selected PLMN (Public Land Mobile Network) or SNPN (Stand-alone Non-Public Network), selects the suitable cell to provide available services, and monitors the control channel of the suitable cell, which is defined as camping on a cell; that is, a camped cell, with respect to the UE, is the serving cell of the UE. The benefits of camping on a cell in RRC idle state or RRC inactive state include that the UE can receive system messages from the PLMN or SNPN; if the UE wishes to establish an RRC connection or continue a suspended RRC connection after registration, the UE can do so by performing initial access on the control channel of the camped 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 RRC CONNECTED state without configured CA / DC (carrier aggregation / dual connectivity), there is only one serving cell including a primary cell. For a UE in RRC CONNECTED state with configured CA / DC (carrier aggregation / dual connectivity), serving cells refer to a set of cells including a special cell (SpCell) and all secondary cells. The primary cell (PCell) is the MCG (Master Cell Group) cell operating on the primary frequency, on which the UE performs the initial connection establishment procedure or initiates connection re-establishment. For dual connectivity operation, the special cell refers to the PCell of the MCG or the PSCell of the SCG (Secondary Cell Group); if not dual connectivity operation, the special cell refers to the PCell.

[0076] As an embodiment, the frequency on which the SCell (Secondary Cell) operates is a secondary frequency.

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

[0078] As an embodiment, the individual content of the information element is referred to as a field.

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

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

[0081] As an embodiment, MCG refers to a set of serving cells associated with the master node in MR-DC, including the SpCell, and optionally, one or more SCells.

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

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

[0084] As an embodiment, in MR-DC, the wireless access node that provides the UE with additional resources is a secondary node. The secondary node can be an en-gNB, a from ng-eNB or a from gNB.

[0085] As an embodiment, in MR-DC, the set of serving cells associated with the secondary 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 RRC inactive state, DC is not used.

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

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

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

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

[0092] As an embodiment, L2 is Layer-2.

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

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

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

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

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

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

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

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

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

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

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

[0104] As one sub-embodiment of this embodiment, the network is a radio access network (RAN).

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

[0106] As one sub-embodiment of this embodiment, the network is a radio access network (RAN).

[0107] As one embodiment, the terminal enters an RRC inactive state when the terminal suspends an RRC connection with the network.

[0108] As one sub-embodiment of this embodiment, the network is a radio access network (RAN).

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

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

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

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

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

[0114] As one 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 the art, the signaling of the Uu interface, i.e. 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 internal refers to the physical internal.

[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 consider the delay, channel environment, and communication resources, while the first interface is the interface within the terminal, and generally does not need to consider the problems urgently needed to be considered in the air interface, so the technical route adopted is completely different.

[0122] As an embodiment, the first interface is the 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 can be provided by different operators, so the interface between the integrated circuit card and the ME is needed to be standardized.

[0128] As an embodiment, the SIM includes a low-power 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 one embodiment, the integrated circuit card stores a core parameter.

[0132] As one embodiment, the core parameter comprises a permanent identity of the terminal.

[0133] As one embodiment, the permanent identity comprises a SUPI (Subscription Permanent Identifier).

[0134] As one embodiment, the core parameter comprises a generic access control parameter.

[0135] As one embodiment, the core parameter comprises a key.

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

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

[0138] As one embodiment, the SIM application toolkit is or comprises a signaling and a signaling flow defined over the first interface.

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

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

[0141] As one embodiment, the terminal is a UE or a handset.

[0142] As one embodiment, the terminal comprises the integrated circuit card and a ME.

[0143] As one embodiment, the terminal comprises a ME.

[0144] As one embodiment, the receiving the first signaling over the first interface means that the first signaling is a signaling defined over the first interface.

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

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

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

[0148] As one embodiment, the first signaling is proactive signaling.

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

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

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

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

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

[0154] As one embodiment, the first message indicates that the first cell relies on the first signaling including instruction '05'.

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

[0156] As one embodiment, the ME needs to provide feedback for the first signaling.

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

[0158] As one embodiment, the first message is feedback for the first signaling.

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

[0160] As one embodiment, the meaning of sending the first message through the first interface includes that the first message is a protocol on the first interface.

[0161] As one embodiment, the meaning of sending the first message through the first interface includes that the ME sends the first message to the UICC through the first interface.

[0162] As one embodiment, the first message is local information included in a TERMINAL RESPONSE.

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

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

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

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

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

[0168] As one embodiment, the timing advance information includes NG-RAN / Satellite NG-RAN Primary Timing Advance Information.

[0169] As one embodiment, the timing advance information includes eNG-RAN Primary Timing Advance Information.

[0170] As one embodiment, the timing advance information includes eNG-RAN / Satellite eNG-RAN Primary Timing Advance Information.

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

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

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

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

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

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

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

[0178] As one embodiment, the first timing advance is for the first cell, including: 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 one embodiment, the uplink radio frame and the downlink radio frame of the terminal are for a same cell.

[0180] As one embodiment, the same cell comprises the first cell.

[0181] As one embodiment, the uplink radio frame and the downlink radio frame of the terminal have a correspondence.

[0182] As one embodiment, the offset between the uplink radio frame and the downlink radio frame of the terminal is an offset in time.

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

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

[0185] As one embodiment, the timing advance maintained by the terminal comprises a timing advance configured for the terminal.

[0186] As one embodiment, the timing advance maintained by the terminal comprises a timing advance of a timing advance group configured for the terminal.

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

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

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

[0190] As one embodiment, the timing advance maintained by the terminal comprises receiving an instruction of a network to update the maintained timing advance.

[0191] As one embodiment, the timing advance maintained by the terminal comprises initiating a random access procedure to obtain the maintained timing advance.

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

[0193] As one embodiment, the timing advance maintained by the terminal comprises a timing advance maintained respectively for communication with a corresponding cell.

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

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

[0196] As one embodiment, one timing advance group includes one timing advance.

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

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

[0199] As one 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 one embodiment, the method proposed in the present application is especially suitable for the scenario that the values of the timing advances maintained by the terminal are different.

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

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

[0203] As one embodiment, the format suitable for the transmission of the first message includes a radix.

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

[0205] As one embodiment, the format suitable for the transmission of the first message includes a bit number.

[0206] As one embodiment, the first timing advance value is for the first cell includes that the first timing advance value is or indicates the timing advance of the first cell.

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

[0208] As one embodiment, the first timing advance value is for the first cell includes that the first timing advance value is derived from the timing advance of the timing advance group to which the first cell belongs.

[0209] As one embodiment, the terminal communicates with the first cell in dependence of the first timing advance value.

[0210] As one embodiment, the terminal sends a signal to the first cell in dependence of the first timing advance value.

[0211] As one embodiment, the dependence of the first timing advance value is to determine an uplink transmission time according to the first timing advance value.

[0212] As one embodiment, the dependence of the first timing advance value is to determine an uplink transmission time according to the first timing advance value and a reception time of a downlink radio frame.

[0213] As one embodiment, the integrated circuit card is in a terminal of a mobile phone.

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

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

[0216] As one 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 a reference point. 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 termination and terminal equipment components to explicitly show the connection relationship between different functional groups.

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

[0218] As one embodiment, a mobile equipment (ME) is functionally divided into multiple entities or components, i.e., one or more mobile terminations (MTs), and one or more terminal equipments (TEs).

[0219] As one embodiment, a TE refers to a device that provides necessary functions for user operation access protocols. These functions are a functional group on the user side of the user interface with the network.

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

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

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

[0223] As one embodiment, the integrated circuit card communicates with the network over a set of bearers independent of the protocol, i.e. the ME provides the mechanism to the SIM application on the integrated circuit card to access the data bearers supported by the ME and the network.

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

[0225] As one embodiment, the communication context multiplexed on the physical channel on the first interface is also referred to as a logical channel, such logical channel is different from the logical channel of the MAC sublayer.

[0226] As one embodiment, the communication context comprises a command or a response.

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

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

[0229] As one embodiment, the SIM Application Toolkit procedure is a communication protocol between the ME and the integrated circuit card, the function of which includes the sending of commands by the application of the integrated circuit card to the ME.

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

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

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

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

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

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

[0236] As one embodiment, the first message is required to be the ME is required.

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

[0238] As one embodiment, the first signaling indicates the first cell comprises: the first signaling requests a timing advance value for the first cell.

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

[0240] As one embodiment, the first timing advance value is for the first cell means: the first timing advance is a timing advance of the first cell.

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

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

[0243] As one embodiment, the first message indicates the first cell comprises: the first message indicates an identity of the first cell.

[0244] As one embodiment, the identity of the first cell comprises a PCI (Physical Cell Identifier).

[0245] As one embodiment, the identity of the first cell comprises a CGI (Cell Global Identifier).

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

[0247] As one embodiment, the identity of the first cell comprises a CGI and a PCI.

[0248] As one embodiment, the PCI comprises being indicated by system information of the first cell.

[0249] As one embodiment, the PCI comprises is indicated by ServingCellConfigCommon.

[0250] As one embodiment, the PCI comprises additionalPCI.

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

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

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

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

[0255] As one embodiment, one timing advance group comprises or is associated with at least one cell, the at least one cell comprised or associated with the one timing advance group has the same timing advance.

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

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

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

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

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

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

[0262] As one embodiment, the multiple timing advance groups are all primary timing advance groups.

[0263] As one embodiment, the multiple timing advance groups being all primary timing advance groups means that the terminal has multiple primary timing advance groups.

[0264] As an embodiment, each timing advance group has an identity, and the identities of different timing advance groups are different.

[0265] As an embodiment, a 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, the group of serving cells are partially or totally configured with uplink.

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

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

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

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

[0271] As an embodiment, the plurality of timing advances comprises two timing advances.

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

[0273] As an embodiment, the plurality of timing advances comprises more than two timing advances.

[0274] As a sub-embodiment of this embodiment, the plurality of timing advances are the plurality of 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 the first cell depending on the number of timing advances maintained by the terminal comprises: 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 the first cell is optional.

[0277] As a sub-embodiment of this embodiment, the first message indicating the first cell refers to the first message being 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] wherein the terminal maintains a plurality of timing advances.

[0280] As an embodiment, the first message indicates a plurality of cells and a timing advance value for each of the plurality of cells, respectively, includes that the first message indicates an identity of each of the plurality of cells.

[0281] As an embodiment, the identity of each of the cells includes a PCI.

[0282] As an embodiment, the identity of each of the cells includes a CGI.

[0283] As an embodiment, the plurality of 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, respectively.

[0285] wherein the terminal maintains a plurality of timing advances.

[0286] As an embodiment, the plurality of PCIs includes at least one additionalPCI.

[0287] As an embodiment, at least two of the plurality of PCIs belong to a same serving 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 indicates a freshness of the first timing advance value includes that the first message indicates that the first timing advance value is fresh.

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

[0292] As an embodiment, the first timing advance value being fresh refers to that a timing advance timer of the terminal is not expired.

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

[0294] As one embodiment, the first TA value is not fresh means that a TA timer of the terminal is expired.

[0295] As one embodiment, the first message indicating the freshness of the first TA value includes the first message indicating whether a TA timer associated with the first TA value is expired.

[0296] As one embodiment, the first message indicating the freshness of the first TA value includes the first message indicating how long the TA timer associated with the first TA value is expired.

[0297] As one embodiment, the freshness includes whether it is recently obtained.

[0298] As one embodiment, the freshness includes the time of obtaining.

[0299] As one embodiment, the first message indicating the freshness of the first TA value includes the first message indicating the time of obtaining the first TA value.

[0300] As one embodiment, the first message indicates the time of obtaining the first TA value by a time stamp.

[0301] As one embodiment, the time stamp indicates the time of obtaining the first TA value.

[0302] As one embodiment, the time stamp indicates the time of indicating the first TA value.

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

[0304] As one embodiment, the time stamp is system time.

[0305] As one embodiment, the time stamp is universal time.

[0306] As one embodiment, the time stamp is absolute time.

[0307] As one embodiment, the time stamp is the time inside the terminal.

[0308] As one embodiment, the time stamp is not air interface time.

[0309] As one embodiment, the above method has the advantage that, since the integrated circuit card is not directly connected to the wireless network, using non-air interface time is beneficial for the integrated circuit card to more directly master the freshness of the first TA value.

[0310] As one embodiment, the first message indicating the freshness of the first TA value comprises the first message indicating whether a TA timer associated with the first TA value is expired.

[0311] As one embodiment, the first message indicating whether a TA timer associated with the first TA value is expired comprises the first TA value is not expired when the first message does not indicate the first TA value is expired.

[0312] As one embodiment, the first message indicating whether a TA timer associated with the first TA value is expired comprises the first TA value is expired when the first message does not indicate the first TA value is not expired.

[0313] As one embodiment, the first message indicating the freshness of the first TA value comprises the first message indicating how long a TA timer associated with the first TA value is expired.

[0314] As one embodiment, the first message indicating how long a TA timer associated with the first TA value is expired comprises the first TA value is an expired TA.

[0315] As one embodiment, the expired TA is a TA timer associated with the expired TA has expired.

[0316] As one embodiment, the expired TA is a TA acquired at last access to a network.

[0317] As one embodiment, the expired TA is a TA acquired at last time in RRC connected state.

[0318] As one embodiment, the first message indicating the freshness of the first TA value comprises the first message indicating how long the first TA value is expired.

[0319] As one embodiment, the first TA value is not expired when the first message indicates the first TA value is a special value.

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

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

[0322] As one embodiment, the first message indicating how long the TA timer associated with the first TA value has expired comprises: the first message indicating whether the TA timer associated with the first TA value has expired beyond a first threshold.

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

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

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

[0326] As one embodiment, using the first threshold facilitates efficiency and avoids misunderstanding.

[0327] As one embodiment, the first message indicating the freshness of the first TA value comprises: the first message indicating whether the serving cell targeted by the first TA value is a current serving cell.

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

[0329] As one embodiment, when the first TA value is not for the current serving cell, the first TA value can be determined as not fresh enough.

[0330] As one embodiment, the first message indicating whether the serving cell targeted by the first TA value is a current serving cell comprises: the first message indicating that the first TA value is for a serving cell other than the current serving cell.

[0331] As one embodiment, the first TA value is fresher when the first message indicates that the serving cell targeted by the first TA value is a current serving cell than when the first message indicates that the serving cell targeted by the first TA value is not a current serving cell.

[0332] As one embodiment, the first message indicating the freshness of the first TA value comprises: the first message including a sub-state of the ME, the sub-state being a sub-state of the inactive state, the sub-state reflecting the freshness of the first TA value.

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

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

[0335] As one embodiment, one of the sub-states indicates that the first TA value is outdated shortly.

[0336] As one embodiment, one of the sub-states indicates that the first TA value is outdated for a long time.

[0337] As one embodiment, one of the sub-states indicates that the first TA value is not of reference.

[0338] As one embodiment, there is a mapping between the sub-states and the freshness.

[0339] As one embodiment, the first message indicating the freshness of the first TA value comprises: the first message indicating whether the terminal is in a stationary state.

[0340] As one embodiment, the stationary state comprises being stationary all the time.

[0341] As one embodiment, the stationary state comprises being stationary at least after obtaining the first TA value.

[0342] As one embodiment, whether being in the stationary state depends on whether a measured RSRP (Reference Signal Receiving Power) satisfies a first criterion.

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

[0344] As one embodiment, the RSRP is for a cell for which the TA is for.

[0345] As one embodiment, the RSRP is for a cell for which the first TA value is for.

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

[0347] As one embodiment, the first criterion is that the measured RSRP changes less than a certain given threshold.

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

[0349] As one embodiment, the certain given threshold is determined by the terminal itself, e.g. according to simulation.

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

[0351] As one embodiment, the certain given threshold is determined according to experiment or drive test.

[0352] As one embodiment, the first message indicates a moving speed of the terminal.

[0353] As one embodiment, the first TA value is obtained according to a maintained TA adjustment.

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

[0355] As one embodiment, the first TA value is determined to be fresh when the terminal is in a stationary state and a TA timer associated with the first TA value expires.

[0356] As one embodiment, the first TA value is determined to be fresh when the terminal is in a stationary state and the first TA value is expired.

[0357] As one embodiment, the first TA value is determined to be fresh when the terminal is in a stationary state and the first TA value is obtained for a long time.

[0358] As one embodiment, the first TA value is determined to be not fresh when the terminal is not in a stationary state and the first TA value is obtained for a long time.

[0359] As one embodiment, the long time is determined by the ME.

[0360] As one embodiment, the long time is determined by a size of the cell.

[0361] As one embodiment, the long time is determined by a signal strength of the wireless network.

[0362] As one embodiment, the long time is indicated by the UICC.

[0363] As one embodiment, the above method has the advantage that the freshness of the first TA value can be more accurately evaluated by the stationary state.

[0364] Embodiment 2

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

[0366] FIG. 2 illustrates a diagram of a network architecture 200 for a 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) system. The 5G NR or LTE network architecture 200 can be referred to as a 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS / EPS 200 can 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 can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown, the 5GS / EPS provides packet-switched services, however, those skilled in the art will readily appreciate, that the various concepts presented throughout this application are amenable to use with networked packet-switched services or other cellular networks providing circuit-switched services. The NG-RAN includes an NR Node-B (gNB) 203 and other gNBs 204. The gNB 203 provides user and control plane protocol terminations toward the UE 201. The gNB 203 can be connected to the other gNBs 204 via an Xn interface (e.g., backhaul). The gNB 203 can 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 (Transmission Reception Point), or some other suitable terminology. The gNB 203 provides access to the 5GC / EPC 210 for the UE 201. Examples of UEs 201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a non-tethered radio, a navigation device, a media player, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a drone, a vehicle, an automobile, a wearable device, or any other similar functional device that includes a mobile terminal.A person of skill in the art would further also be aware that the UE 201 can be referred to 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 by some other suitable terminology. The gNB 203 is connected by means of an S1 / NG interface to the 5GC / EPC 210. The 5GC / EPC 210 comprises a MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF 214, a S-GW (Service Gateway) / UPF (User Plane Function) 212, and a P-GW (Packet Data Network Gateway) / UPF 213. The MME / AMF / SMF 211 is a control node that handles signaling between the UE 201 and the 5GC / EPC 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocal) packets are transferred through the S-GW / UPF 212, which itself is connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation as well as other functions. The P-GW / UPF 213 is connected to Internet services 230. The Internet services 230 comprise operator corresponding Internet protocol services, which can in particular comprise the Internet, an intranet, IMS (IP Multimedia Subsystem), and packet switched streaming services.

[0367] As one embodiment, the terminal in the present application is the UE 201.

[0368] As one embodiment, the base station of the second node in the present application is the gNB 203.

[0369] As one embodiment, the wireless link from the UE 201 to the NR Node B is an uplink.

[0370] As one embodiment, the wireless link from the NR Node B to the UE 201 is a downlink.

[0371] As one embodiment, the UE 201 is a mobile phone.

[0372] As one example, the UE 201 is a special purpose device or special equipment having communication functionality.

[0373] As one example, the gNB 203 is a Micro Cell base station.

[0374] As one example, the gNB 203 is a Pico Cell base station.

[0375] As one example, the gNB 203 is a base station used in a home network.

[0376] As one example, the gNB 203 is a base station used in a private network.

[0377] Embodiment 3

[0378] Embodiment 3 shows a diagram of an embodiment of a radio protocol architecture for a user plane and a control plane according to the present application, as shown in Figure 3. Figure 3 is a diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3 showing the radio protocol architecture for the control plane 300 between a terminal (UE, gNB) and a second node (gNB, UE), or two UEs, 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 the PHY 301 herein. Layer 2 (L2 layer) 305 is above the PHY 301 and is responsible for the link between the terminal and the second node, as well as between two UEs, over the PHY 301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, a RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which are terminated at the second node. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security functions, such as ciphering of the data packets, and packet header compression, as well as handover support for the terminal between 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 the various radio resources (e.g., resource blocks) in one cell among the 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 handling the signaling protocol for the PC5 interface. The radio protocol architecture for the user plane 350 includes Layer 1 (L1 layer) and Layer 2 (L2 layer), which are generally 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 for the terminal and the second node in the user plane 350, 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 a SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS (Quality of Service) flows and data radio bearers (DRBs) to support the diversity of services. SRBs can be seen as services or interfaces provided by the PDCP layer to higher layers, 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. SRBs are bearers between the UE and the access network for transmitting control signaling including RRC signaling. SRB1 is of particular significance to the UE, and each UE establishes an RRC connection after which there is SRB1 for transmitting RRC signaling, and most signaling is transmitted through SRB1. If SRB1 is interrupted or cannot be used, the UE must perform RRC reestablishment. SRB2 is generally used only to transmit NAS signaling or signaling related to security. The UE can not configure SRB3. Except for emergency services, the UE must establish an RRC connection with the network to perform subsequent communication. Although not shown, the terminal can have several upper layers above the L2 layer 355. In addition, a network layer (e.g., an IP layer) that terminates at a P-GW on the network side and an application layer that terminates at the other end (e.g., a remote UE, a server, etc.) of the connection are also included. The protocol layers can also be referred to as protocol sublayers. FIG. 3 shows a general protocol layer structure, and the nodes used in the present application can lack some protocol layers.

[0379] As one embodiment, the wireless protocol architecture in FIG. 3 is applicable to the terminal in the present application.

[0380] As one embodiment, the wireless protocol architecture in FIG. 3 is applicable to the second node in the present application.

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

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

[0383] Embodiment 4

[0384] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to one embodiment of the present application, as shown in FIG. 4. FIG. 4 is a block diagram of a first communication device 450 and a second communication device 410 that communicate 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 optionally, 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 receive processor 470, a transmit processor 416, and optionally, a multi-antenna receive processor 472, a multi-antenna transmit 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, upper layer packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements functionality of the L2 layer. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, ciphering, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocations for the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets, and signaling to the first communication device 450. The transmit processor 416 and the multiple antenna transmit processor 471 implement various signal processing functions for the LI layer (i.e., physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, and mapping of coded and interleaved data onto various 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 multiple antenna transmit processor 471 performs digital spatial pre-coding of the coded and modulated symbols, including codebook-based and non-codebook-based pre-coding, and beamforming processing, to generate one or more spatial streams. The transmit processor 416 then maps to each spatial stream to the subcarriers, multiplexes with reference signals (e.g., pilots) in the time and / or frequency domain, and then performs an inverse fast Fourier transform (IFFT) to generate a time-domain multicarrier symbol stream for the physical channel. The multiple antenna transmit processor 471 then performs transmit analog pre-coding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multiple antenna transmit processor 471 into a radio frequency stream, and then provides the radio frequency stream to the corresponding antenna 420.

[0388] In transmissions 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 respective antenna 452. Each receiver 454 recovers information modulated onto an RF carrier and provides the recovered information at baseband as a stream of symbols to a receive processor 456. The receive processor 456 and a multiple access receiver processor 458 implement various signal processing functions of the Ll layer. The multiple access receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multiple access symbol streams from the receivers 454. The receive processor 456 converts the baseband multiple access symbol streams from the time-domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals are demultiplexed from the received symbol streams to recover the physical layer data signals and the reference signals for channel estimation. The data signals are recovered after multiple access detection in the multiple access receiver processor 458 to recover any spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered to generate soft decisions by the receive processor 456. The receive processor 456 then decodes and de-interleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channels. The upper layer data and control signals are then provided to a controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 can be associated with a memory 460 that stores program codes and data. The memory 460 can be referred to as a computer-readable medium. In transmissions from the second communication device 410 to the first communication device 450, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover 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 can also be provided to the 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 a controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmit 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, ciphering, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocations, implements L2 layer functionality for the user plane and control plane. The controller / processor 459 is also responsible for error detection, retransmission of lost packets, and signaling to the second communication device 410. A transmit processor 468 performs modulation mapping, channel coding processing, and a multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, and then the transmit processor 468 modulates the resulting spatial streams into multi-carrier / single-carrier symbol streams, which are then provided to different antennas 452 via transmitters 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 signal, and then provides the radio frequency signal to the antenna 452.

[0390] In the transmission from the first communication device 450 to the second communication device 410, the functions at the second communication device 410 are similar to the receive functions 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 respective antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement the functionality of the L1 layer. A controller / processor 475 implements the functionality of the L2 layer. The controller / processor 475 can be associated with a memory 476 that stores 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 demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer data packets from the UE 450. Upper layer data packets from the controller / processor 475 can be provided to a core network.

[0391] As one embodiment, the first communication device 450 comprises at least one processor and at least one memory including a computer program code; the at least one memory and the computer program code are configured to, with the at least one processor, cause the first communication device 450 to perform at least: receive, through a first interface, a first signaling; the first signaling requests local information of the terminal; in response to the receiving of the first signaling, send, through the first interface, a first message, the first message indicates that the ME is in an inactive state, the first message comprises a first timing advance value, the first message indicates 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.

[0392] As one embodiment, the first communication device 450 comprises a memory storing a program of computer readable instructions to produce actions when executed by at least one processor, the actions comprising: receiving, through a first interface, a first signaling; the first signaling requests local information of the terminal; in response to the receiving of the first signaling, sending, through the first interface, a first message, the first message indicates that the ME is in an inactive state, the first message comprises a first timing advance value, the first message indicates 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.

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

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

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

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

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

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

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

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

[0401] As an example, the signaling or message in the random access procedure is transmitted over an air interface.

[0402] Embodiment 5

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

[0404] For the ME U01, a first signaling is received in step S5101; a first message is sent in step S5102; and a first random access procedure is initiated in step S5103.

[0405] For the integrated circuit card U02, a first signaling is sent in step S5201; and a first message is received in step S5202.

[0406] In embodiment 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; and the first interface is an interface between the integrated circuit card of the terminal and the mobile equipment (ME) of the terminal.

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

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

[0409] As an example, 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 a network, and the integrated circuit card U02 and the ME U01 together constitute a terminal that can access a wireless network.

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

[0411] As an example, the internal requirement includes a positioning requirement.

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

[0413] As one embodiment, the integrated circuit card U02 communicates with the core network using a bearer independent protocol.

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

[0415] As one embodiment, the core network comprises a location management function.

[0416] As one embodiment, the core network comprises a charging function.

[0417] As one embodiment, the core network comprises a monitoring unit.

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

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

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

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

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

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

[0424] As one embodiment, the above method has the advantage of fast feedback and low latency.

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

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

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

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

[0429] As one sub-embodiment of this embodiment, obtaining or re-obtaining timing advance over the air interface is to obtain the latest timing advance.

[0430] As one embodiment of the method, obtaining or re-obtaining timing advance over the air interface comprises initiating a random access procedure.

[0431] As one embodiment of the method, obtaining or re-obtaining timing advance over the air interface comprises requesting from the network an indication of the timing advance.

[0432] As one embodiment of the method, the first random access procedure comprises sending a random access signal.

[0433] As one embodiment of the method, the first random access procedure comprises receiving signaling from the network indicating the timing advance.

[0434] As one embodiment of the method, the first random access procedure uses the air interface.

[0435] As one embodiment of the method, the first random access procedure is directed to the network.

[0436] As one embodiment of the method, the first random access procedure is for obtaining or re-obtaining timing advance.

[0437] As one embodiment of the method, the ME U01 obtains or re-obtains timing advance over the air interface when the timing advance maintained by the terminal does not comprise the timing advance requested by the first signaling.

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

[0439] As one embodiment of the method, whether to obtain or re-obtain timing advance over the air interface depends on whether the timing advance maintained by the terminal is valid.

[0440] As one embodiment of the method, when the terminal maintains a valid timing advance, obtaining or re-obtaining timing advance over the air interface is not triggered, otherwise the first signaling triggers obtaining or re-obtaining timing advance over the air interface.

[0441] As one embodiment of the method, whether to obtain or re-obtain timing advance over the air interface depends on whether the timing advance release requested by the first signaling maintained by the terminal is valid.

[0442] As one embodiment of the method, when the terminal maintains a valid timing advance release requested by the first signaling, obtaining or re-obtaining timing advance over the air interface is not triggered, otherwise the first signaling triggers obtaining or re-obtaining timing advance over the air interface.

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

[0444] As one embodiment, the first signaling triggers the terminal to obtain or re-obtain the timing advance over the air interface when the terminal does not maintain a fresh enough timing advance, otherwise, the first signaling does not trigger the terminal to obtain or re-obtain the timing advance over the air interface.

[0445] As one 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 one embodiment, the timing delay requested by the first signaling is a timing delay for a cell requested by the first signaling.

[0447] As one 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 one embodiment, the fresh enough means that a start of a timing advance timer associated with the timing advance is not earlier than a threshold from a current time.

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

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

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

[0452] As one embodiment, the benefit of triggering the terminal to obtain or re-obtain the timing advance is that the most accurate timing delay can be obtained, and performance is improved.

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

[0454] As one embodiment, the reception of the first message triggers the integrated circuit card U02 to adjust a charging policy.

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

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

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

[0458] As one embodiment, the first report indicates entering a new charging mode.

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

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

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

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

[0463] Embodiment 6

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

[0465] FIG. 6 shows a structure of a terminal, which is a UE.

[0466] As one 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 a reference point. 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 Termination and Terminal Equipment components to explicitly show the connection relationship between different functional groups.

[0467] As one embodiment, what is a reference point and how to distinguish different domains through a reference point is prior art.

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

[0469] As one embodiment, a Mobile Equipment (ME) is functionally divided into multiple entities or components, i.e., one or more Mobile Termination (MT) and one or more Terminal Equipment (TE).

[0470] As one embodiment, TE refers to a device that provides necessary functions for user operation of access protocols. These functions are a functional group on the user side of the user and network interface.

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

[0472] As one embodiment, the MT is a component of the ME for supporting functions related to managing the access interface to the PLMN.

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

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

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

[0476] As one embodiment, Fig. 6 shows that the first interface is an interface inside the UE.

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

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

[0479] As one embodiment, the air interface in Fig. 6 is a Uu interface.

[0480] As one embodiment, the Uu interface is a 3GPP defined air interface.

[0481] As one embodiment, Fig. 6 shows that the ME includes only one MT, but the method proposed in this application is applicable to the case where the ME includes multiple MTs.

[0482] As one embodiment, Fig. 6 shows that the ME includes only one TE, but the method proposed in this application is applicable to the case where the ME includes multiple TEs.

[0483] As one embodiment, Fig. 6 shows that the network includes a radio access network.

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

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

[0486] Embodiment 7

[0487] Embodiment 7 shows a schematic diagram of timing advance according to one embodiment of this application, as shown in Fig. 7.

[0488] Fig. 7 shows the principle of timing advance, and the timing advance in this application also conforms to other definitions, explanations and applications of timing advance by 3GPP, if any.

[0489] As an embodiment, the rectangular marks in Figure 7 identify radio frames. Due to different UE distances to the transmission point, the downlink radio frames arrive at different UEs at different times due to propagation delay, for example, T1 time to UE1 and T2 time to UE2.

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

[0491] As an embodiment, the timing advance is 2 times the propagation delay.

[0492] As an embodiment, the network can also configure the timing advance to be 2 times the propagation delay plus an offset.

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

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

[0495] As an embodiment, as can be seen from Figure 7, the timing advance of different UEs is different, and 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 transmission point includes the first cell.

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

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

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

[0500] As an embodiment, the transmission 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 the corresponding timing advance.

[0504] Embodiment 8

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

[0506] As one embodiment, node A in FIG. 8 corresponds to the second node of the application.

[0507] As one embodiment, node A in FIG. 8 corresponds to a node other than the second node of the application.

[0508] As one embodiment, node B in FIG. 8 is a downlink transmission node.

[0509] As one embodiment, the downlink transmission node comprises a cell.

[0510] As one embodiment, the downlink transmission node comprises an antenna.

[0511] As one embodiment, the downlink transmission node comprises a base station.

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

[0513] As one embodiment, the terminal maintains a timing advance for the node B.

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

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

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

[0517] As one embodiment, the node A corresponds to a PCell of the terminal, and the node B corresponds to an additional PCI of the PCell of the terminal.

[0518] As one embodiment, the node A corresponds to a PSCell of the terminal, and the node B corresponds to an additional PCI of the PSCell of the terminal.

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

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

[0521] As one embodiment, in the scenario of FIG. 8, the first message indicates the first cell as the one the terminal maintains multiple timing advances.

[0522] As one embodiment, the identity of the node A is different from the identity of the node B.

[0523] As one embodiment, the identity of the node A is PCI.

[0524] As one embodiment, the identity of the node A is CGI.

[0525] As one embodiment, the identity of the node A is both CGI and PCI.

[0526] As one embodiment, the CGI identity of the identity of the node A is the same as the CGI identity of the identity of the node B, and the PCI identity of the identity of the node A is different from the PCI identity of the identity of the node B.

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

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

[0529] As one embodiment, the CGI identity of the identity of the node A is different from the CGI identity of the identity of the node B.

[0530] As one sub-embodiment of this embodiment, the PCI of the identity of the node A is different from the PCI of the identity of the node B.

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

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

[0533] As one embodiment, the above method helps to accurately report the object of the first timing advance value.

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

[0535] As one embodiment, the first timing advance value is the freshest one of the timing advances maintained by the terminal.

[0536] As one embodiment, the above method helps the UICC to obtain the freshest timing advance, and thus the most reliable positioning.

[0537] Embodiment 9

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

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

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

[0541] As one embodiment, the ongoing session is an RRC-inactive ongoing session.

[0542] As one embodiment, the ongoing session includes a small data transmission.

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

[0544] As one embodiment, the first message indicating that there is an ongoing session facilitates determining that the first TA value is fresh.

[0545] As one embodiment, the first message indicating that there is no ongoing session facilitates determining that the first TA value is not fresh.

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

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

[0548] As one embodiment, the data transmission includes an RRC-inactive data transmission.

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

[0550] As one embodiment, the first message indicating that there is an ongoing data transmission facilitates determining that the first TA value is fresh.

[0551] As one embodiment, the first message indicating that there is no ongoing data transmission facilitates determining that the first TA value is not fresh.

[0552] As one embodiment, the first message indicates an ongoing random access procedure.

[0553] As one embodiment, the first message indicates that there is no ongoing random access procedure.

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

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

[0556] As one embodiment, the first message is in pending state until sent after receiving a timing advance command.

[0557] As one embodiment, the first message is sent immediately after receiving the first signaling without waiting for the ongoing random access procedure to complete.

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

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

[0560] As one embodiment, the first message indicates that there is an ongoing random access procedure to facilitate triggering the integrated circuit card to send a new request for timing advance signaling to obtain the latest timing advance.

[0561] Embodiment 10

[0562] Embodiment 10 illustrates a diagram of timing advance adjustment by a terminal maintaining a first timing advance value according to one embodiment of the present application, as shown in FIG. 10.

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

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

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

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

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

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

[0569] As one embodiment, the offset is determined by a moving direction and a moving speed of the terminal.

[0570] As one embodiment, the one offset is negative when the terminal moves towards the corresponding transmission point, and vice versa.

[0571] As one embodiment, the one offset is determined based on the running time of a timing advance timer corresponding to the timing advance maintained by the terminal and the speed of movement towards the transmission point corresponding to the timing advance.

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

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

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

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

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

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

[0578] As one embodiment, the ME adjusts the first timing advance value based on the accuracy requirement of the timing advance requested by the first signaling.

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

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

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

[0582] Embodiment 11

[0583] Embodiment 11 illustrates a structural block diagram of a processing device in a terminal according to one embodiment of the present application; as shown in FIG. 11. In FIG. 11, 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 with the one or more processors, and is configured to store computer program codes, the computer program codes comprising computer instructions, which are invoked by the one or more processors to cause the terminal to perform at least:

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

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

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

[0589] As an embodiment, the first message indicating the freshness of the first timing advance value comprises: the first message indicating a time of obtaining the first timing advance value.

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

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

[0592] As an embodiment, the first message indicating the freshness of the first timing advance value comprises: the first message indicating whether a serving cell to which the first timing advance value is directed is a current serving cell.

[0593] As an embodiment, the first message indicating the freshness of the first timing advance value comprises: the first message comprising a sub-state of the ME, the sub-state being a sub-state of the inactive state, the sub-state reflecting 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 procedure.

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

[0596] As one embodiment, in response to receiving the first signaling, initiating a random access procedure over the air interface, including receiving a timing advance command;

[0597] wherein the first timing advance value is dependent on the timing advance command.

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

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

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

[0601] As one embodiment, the terminal is a low latency enabled communication device.

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

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

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

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

[0606] Those skilled in the art can understand that all or part of the steps in the foregoing method can be instructed by programs to the relevant hardware to complete, and the programs can be stored in a computer readable storage medium, such as a read-only memory, a hard disk, an optical disk or the like. Alternatively, all or part of the steps of the foregoing embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the foregoing embodiments 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 combination of software and hardware. The user equipment, terminal and UE in the present application include but are not limited to unmanned aerial vehicles, communication modules on unmanned aerial vehicles, remote control aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication devices, wireless sensors, network cards, Internet of Things terminals, RFID (Radio Frequency Identification) terminals, NB-IoT (Narrow Band Internet of Things) terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, network cards, vehicle-mounted communication devices, low-cost mobile phones, low-cost tablet computers, satellite communication devices, ship communication devices, NTN user equipment and other wireless communication devices. The base station or system equipment in the present application includes but is not limited to macro cellular base stations, micro cellular base stations, home base stations, relay base stations, gNB (NR NodeB) NR NodeB, TRP (Transmitter Receiver Point), NTN (Non-Terrestrial Network) base station, satellite equipment, flight platform equipment and other wireless communication devices.

[0607] The present application can be implemented in other specified forms without departing from the core or essential characteristics thereof. Therefore, the presently disclosed embodiments should in no way be considered as descriptive rather than limiting. The scope of the present application is determined by the appended claims rather than the preceding description, and all modifications within the equivalent meaning and range of the claims are considered to be included therein.

Claims

1. A method in a terminal used for wireless communication, wherein, Comprising: receiving a 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 indicates that the ME is in an inactive state, the first message includes a first timing advance value, the first message indicates 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.

2. The method in the terminal of claim 1, wherein the first message indicating the freshness of the first timing advance value comprises: the first message indicating a time of acquisition of the first timing advance value.

3. The method in the terminal of claim 1, wherein the first message indicating the freshness of the first timing advance value comprises: the first message indicating whether a timing advance timer associated with the first timing advance value is expired.

4. The method in the terminal of claim 1 or 3, wherein the first message indicating the freshness of the first timing advance value comprises: the first message indicating how long the timing advance timer associated with the first timing advance value is expired.

5. The method in the terminal of any of claims 1 to 4, wherein the first message indicating the freshness of the first timing advance value comprises: the first message indicating whether a serving cell to which the first timing advance value is for is a current serving cell.

6. The method in the terminal of any of claims 1 to 5, wherein the first message indicating the freshness of the first timing advance value comprises: the first message including a sub-state of the ME, the sub-state is a sub-state of the inactive state, the sub-state reflects the freshness of the first timing advance value.

7. The method in the terminal of any of claims 1 to 6, wherein 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 the terminal of any of claims 1 to 6, wherein the first message indicating the freshness of the first timing advance value comprises: the first message indicating whether the terminal is in a stationary state.

9. The method in the terminal of any of claims 1 to 8, wherein in response to receiving the first signaling, initiating a random access procedure over an air interface, comprising: receiving a timing advance command; wherein the first timing advance value is dependent on the timing advance command.

10. A terminal for wireless communication, wherein, Comprising: the terminal comprising: one or more processors and a memory; the memory coupled with the one or more processors, the memory configured to store computer program code comprising computer instructions, the one or more processors configured to invoke the computer instructions to cause the terminal to perform the method of any of claims 1-9.

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