Apparatus, method, apparatus, and computer readable medium for uplink transmission duration extension

Abstract

Methods and apparatus for uplink transmission duration extension, among other things. Wherein the terminal device may at least: receive at least one first indication from a network device indicating whether the terminal device is allowed to extend an uplink transmission duration in which uplink transmission is allowed after expiration of a location validity period; and if the at least one first indication allows the terminal device to prolong the uplink transmission duration, prolonging the uplink transmission duration according to the at least one first indication until a second indication indicating the terminal device to stop the uplink transmission duration is received from the network device, or if each of the received plurality of first indications allows the terminal device to extend the uplink transmission duration, extending the uplink transmission duration according to each of the received plurality of first indications, and stopping the uplink transmission duration when the uplink transmission duration extended according to each of the first indications expires.

Description

Technical Field Various exemplary embodiments are directed to devices, methods, apparatus, and computer-readable media for uplink transmission duration extension. Background Art Position measurements, such as Global Navigation Satellite System (GNSS) measurements, are necessary for user equipment (UE) in non-terrestrial networks (NTN) to perform pre-compensation of uplink transmissions in terms of time and frequency adjustment. In NTN, the network side can trigger the UE to perform GNSS measurements, for example when the current GNSS validity period is about to expire, and the UE can also trigger GNSS measurements autonomously if the UE does not receive a trigger from the network side. In NTN, the UE cannot communicate with the network side and perform GNSS measurements at the same time. When the UE has to perform GNSS measurements, the UE will move to Radio Resource Control (RRC) idle mode. However, if the UE has a long connection and is non-stationary, moving to RRC idle mode generates overhead in terms of connection establishment signaling. Summary of the invention A brief summary of exemplary embodiments is provided below to provide a basic understanding of some aspects of various embodiments. It should be noted that this summary is not intended to identify key features of essential elements or to define the scope of the embodiments, and its sole purpose is to introduce some concepts in a simplified form as a prelude to the more detailed description provided below. In a first aspect, an apparatus for a terminal device is disclosed. The apparatus may include at least one processor and at least one memory. The at least one memory may store instructions, which when executed by the at least one processor may cause the terminal device to at least: receive at least one first indication from a network device, indicating whether the terminal device is allowed to extend the uplink transmission duration in which the uplink transmission is allowed after the location validity period expires; and perform one of the following operations: if the at least one first indication allows the terminal device to extend the uplink transmission duration, then extend the uplink transmission duration according to the at least one first indication until a second indication is received from the network device indicating that the terminal device stops the uplink transmission duration; or if each of the received multiple first indications allows the terminal device to extend the uplink transmission duration, then extend the uplink transmission duration according to each of the received multiple first indications, and when the uplink transmission duration extended according to each of the first indications expires, stop the uplink transmission duration. In a second aspect, an apparatus for a network device is disclosed. The apparatus may include at least one processor and at least one memory. The at least one memory may store instructions, which, when executed by the at least one processor, may cause the network device to at least: transmit at least one first indication to a terminal device, indicating whether the terminal device is allowed to extend the uplink transmission duration in which the uplink transmission is allowed after the location validity period expires, wherein, if the at least one first indication allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to the at least one first indication until a second indication instructing the terminal device to stop the uplink transmission duration is received from the network device; or if each of the received multiple first indications allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to each of the received multiple first indications, and when the uplink transmission duration extended according to each of the first indications expires, the uplink transmission duration needs to be stopped. In a third aspect, a method performed by an apparatus for a terminal device is disclosed. The method may include: receiving at least one first indication from a network device, which indicates whether the terminal device is allowed to extend the uplink transmission duration in which the uplink transmission is allowed after the location validity period expires; and performing one of the following operations: if the at least one first indication allows the terminal device to extend the uplink transmission duration, the uplink transmission duration is extended according to the at least one first indication until a second indication instructing the terminal device to stop the uplink transmission duration is received from the network device; or, if each of the received multiple first indications allows the terminal device to extend the uplink transmission duration, the uplink transmission duration is extended according to each of the received multiple first indications, and when the uplink transmission duration extended according to each of the first indications expires, the uplink transmission duration is stopped. In a fourth aspect, a method performed by an apparatus for a network device is disclosed. The method may include: transmitting at least one first indication to a terminal device, indicating whether the terminal device is allowed to extend an uplink transmission duration in which uplink transmission is allowed after the location validity period expires, wherein if the at least one first indication allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to the at least one first indication until a second indication instructing the terminal device to stop the uplink transmission duration is received from the network device; or if each of the received multiple first indications allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to each of the received multiple first indications, and when the uplink transmission duration extended according to each of the first indications expires, the uplink transmission duration needs to be stopped. In a fifth aspect, an apparatus for a terminal device is disclosed. The apparatus for the terminal device may include: a device for receiving at least one first indication from a network device, the at least one first indication indicating whether the terminal device is allowed to extend the uplink transmission duration in which the uplink transmission is allowed after the location validity period expires; and a device for performing one of the following: if the at least one first indication allows the terminal device to extend the uplink transmission duration, then extend the uplink transmission duration according to the at least one first indication until a second indication is received from the network device indicating that the terminal device stops the uplink transmission duration; or, if each of the received multiple first indications allows the terminal device to extend the uplink transmission duration, then extend the uplink transmission duration according to each of the received multiple first indications, and when the uplink transmission duration extended according to each of the first indications expires, stop the uplink transmission duration. In a sixth aspect, a device for a network device is disclosed. The device for the network device may include: a device for transmitting at least one first indication to a terminal device, the at least one first indication indicating whether the terminal device is allowed to extend the uplink transmission duration in which the uplink transmission is allowed after the location validity period expires, wherein if the at least one first indication allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to the at least one first indication until a second indication instructing the terminal device to stop the uplink transmission duration is received from the network device; or, if each of the received multiple first indications allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to each of the received multiple first indications, and when the uplink transmission duration extended according to each of the first indications expires, the uplink transmission duration needs to be stopped. In a seventh aspect, a computer-readable medium is disclosed. The computer-readable medium may include program instructions, which, when executed by an apparatus for a terminal device, may cause the terminal device to at least: receive at least one first indication from a network device indicating whether the terminal device is allowed to extend the uplink transmission duration in which the uplink transmission is allowed after the location validity period expires; and perform one of the following operations: if the at least one first indication allows the terminal device to extend the uplink transmission duration, then extend the uplink transmission duration according to the at least one first indication until a second indication instructing the terminal device to stop the uplink transmission duration is received from the network device; or, if each of the received multiple first indications allows the terminal device to extend the uplink transmission duration, then extend the uplink transmission duration according to each of the received multiple first indications, and when the uplink transmission duration extended according to each of the first indications expires, stop the uplink transmission duration. In an eighth aspect, a computer-readable medium is disclosed. The computer-readable medium may include program instructions, which, when executed by an apparatus for a network device, cause the network device to at least: transmit at least one first indication to a terminal device, indicating whether the terminal device is allowed to extend the uplink transmission duration in which the uplink transmission is allowed after the location validity period expires, wherein if the at least one first indication allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to the at least one first indication until a second indication instructing the terminal device to stop the uplink transmission duration is received from the network device; or, if each of the received multiple first indications allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to each of the received multiple first indications, and when the uplink transmission duration extended according to each of the first indications expires, the uplink transmission duration needs to be stopped. Other features and advantages of exemplary embodiments of the present disclosure will also become apparent from the following description of the specific embodiments when read in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of exemplary embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS Some exemplary embodiments will now be described by way of non-limiting examples with reference to the accompanying drawings. Figure 1 An exemplary sequence diagram for uplink transmission duration extension according to an exemplary embodiment of the present disclosure is shown. Figure 2 A flow chart showing an example method 200 for uplink transmission duration extension according to an example embodiment of the present disclosure is shown. Figure 3 A flow chart showing an example method 300 for uplink transmission duration extension according to an example embodiment of the present disclosure is shown. Figure 4 A block diagram showing an example apparatus 400 for uplink transmission duration extension according to an example embodiment of the present disclosure is shown. Figure 5 A block diagram showing an example apparatus 500 for uplink transmission duration extension according to an example embodiment of the present disclosure is shown. Figure 6 A block diagram is shown showing an example apparatus 600 for uplink transmission duration extension according to an example embodiment of the present disclosure. Figure 7 A block diagram is shown showing an example apparatus 700 for uplink transmission duration extension according to an example embodiment of the present disclosure. Throughout the drawings, the same or similar reference numerals denote the same or similar elements, and repeated description of the same elements will be omitted. DETAILED DESCRIPTION Hereinafter, some exemplary embodiments are described in detail with reference to the accompanying drawings. In order to provide a thorough understanding of various concepts, the following description includes specific details. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known circuits, techniques, and components are shown in block diagram form to avoid obscuring the concepts and features described. The network side may allow the UE to perform uplink transmission during the initial uplink transmission duration after the GNSS validity period expires. The initial uplink transmission duration may be a duration X, which may be a remainder of a time alignment timer (TAT), for example, when the TAT is not infinite, such as the timeAlignmentTimer specified in the Third Generation Partnership Project (3GPP) Technical Specification (TS) 36.331. Alternatively, when the TAT is infinite, X may be equal to a configured value Y. The TAT may be used to control how long it takes for the UE's media access control (MAC) entity to consider the network side (e.g., serving cell) as uplink time aligned. It is not clear whether further extension of the uplink transmission duration is allowed, for example, in the case where the UE is stationary and the uplink transmission duration can be further extended for uplink transmission. Furthermore, there is no mechanism to indicate by the network side that such extension is allowed. Exemplary embodiments of the present disclosure provide a solution for extending the uplink transmission duration in NTN. According to exemplary embodiments of the present disclosure, the network side can configure whether to allow the UE to perform uplink transmissions greater than the initial uplink transmission duration after the GNSS validity period expires. In addition, exemplary embodiments of the present disclosure provide a mechanism on how the network side can signal such an extension and how to stop the uplink transmission duration. Figure 1 An exemplary sequence diagram for uplink transmission duration extension according to an exemplary embodiment of the present disclosure is shown. Figure 1 , UE 110 may represent any terminal device in the NTN, and may be, for example, an Internet of Things (IoT) UE, an enhanced Machine Type Communication (eMTC) UE, etc. The network device 150 may represent a network side serving the UE 110 in the NTN, and may be used as a base station (BS), such as an evolved Node B (eNB), a next generation Node B (gNB), etc. Assume that UE 110 is initially in a connection mode with network device 150, the location validity period (e.g., GNSS validity period, also referred to as the remaining GNSS validity period) of UE 110 has expired, and network device 150 has configured an initial uplink transmission duration X for UE 110, which may be the remaining time of a timer (e.g., TAT) for uplink time alignment or a configuration value Y, i.e., X=Y, so when the location validity period expires, UE 110 may start the initial uplink transmission duration X, during which UE 110 may perform uplink transmission and does not need to perform positioning measurements. It may be assumed that UE 110 is not allowed or cannot perform uplink transmission and positioning measurements at the same time. For example, when the timer for uplink time alignment is infinite, the initial uplink transmission duration may have a configuration value Y. refer to Figure 1 , the network device 150 may transmit at least one first indication 152 to the UE 110, indicating whether the UE 110 is allowed to extend the uplink transmission duration after the location validity period expires, during which uplink transmission is allowed. The UE 110 may receive the at least one first indication 152 in the configuration of the initial uplink transmission duration X, alternatively or additionally, the UE 110 may receive the at least one first indication 152 during the uplink transmission duration after receiving the configuration of the initial uplink transmission duration X. If at least one first indication 152 allows the UE 110 to extend the uplink transmission duration, an exemplary embodiment of the present disclosure provides a solution for the UE 110 to extend and stop the uplink transmission duration. According to an exemplary embodiment of the present disclosure, the UE 110 may extend the uplink transmission duration multiple times according to the at least one first indication 152, and when the uplink transmission duration extended multiple times according to the at least one first indication 152 expires, or when a second indication 162 instructing the UE 110 to stop the uplink transmission duration is received from the network device, the uplink transmission duration extension is stopped. In some embodiments, in operation 112, if at least one first indication 152 allows UE 110 to extend the uplink transmission duration, UE 110 may extend the uplink transmission duration according to at least one first indication 152 until a second indication 162 is received from network device 150 to instruct UE 110 to stop the uplink transmission duration. In this case, at least one first indication 152 may be a single first indication 152 that triggers UE 110 to repeat the extension of the uplink transmission duration until a second indication 162 is received. If the second indication 162 is not received before the end of the ongoing extension, UE 110 may continue to extend the uplink transmission duration again and again. On the other hand, if the second indication 162 is received, UE 110 stops the uplink transmission duration, even if UE 110 is still in the initial uplink transmission duration X. The current uplink transmission duration may be stopped immediately upon receiving the second indication 162, or the current uplink transmission duration may be stopped at the end of the current uplink transmission duration, i.e., no further extension should be performed. This embodiment provides low signaling overhead for multiple extensions. Alternatively, in some embodiments, in operation 122, if each of the received plurality of first indications 152 allows the UE 110 to extend the uplink transmission duration, the UE 110 may extend the uplink transmission duration according to each of the received plurality of first indications 152, and in operation 124, when the uplink transmission duration extended according to each of the first indications 152 expires, the uplink transmission duration is stopped. In this case, the network device 150 may indicate the extension separately for each new extension, and when the uplink transmission duration extended according to the first indication 152 expires, the UE 110 is required to stop the uplink transmission duration even without the second indication 162. This embodiment provides increased reliability for multiple extensions for stopping the extension and not allowing the extension to continue for too long. In some embodiments, at least one first indication 152 may indicate a number M, and in this case, the UE 110 may extend the uplink transmission duration by M times X. In this case, there may be a single first indication 152 without a second indication 162. This embodiment allows multiple extensions with very low signaling overhead. In this case, the network device 150 may also stop the extension by, for example, transmitting a second indication 162 after M-1 uplink transmission durations. Thus, this embodiment may also prevent the extension from running indefinitely. In some embodiments, the at least one first indication 152 may indicate a factor K, in which case the UE 110 may extend the uplink transmission duration by a factor X which is K. In some embodiments, the at least one first indication 152 may indicate a duration Z, in which case the UE 110 may extend the uplink transmission duration by Z instead of X. In some embodiments, if the at least one first indication 152 includes the number M, the factor K and / or the duration Z, the at least one first indication 152 may implicitly indicate to the UE 110 that an extension of the uplink transmission duration is allowed. In some embodiments, if at least one first indication 152 is received, then in operation 112 / 122, UE 110 may restart / reset the uplink transmission duration when the current uplink transmission duration expires. For example, if UE 110 receives the first indication 152 during the initial uplink transmission duration X, then in operation 112 / 122, when the current initial uplink transmission duration X expires, UE 110 restarts / resets the uplink transmission duration. Alternatively, in some embodiments, the UE 110 may restart / reset the uplink transmission duration upon receiving at least one first indication 152. For example, if the UE 110 receives the first indication 152 during the initial uplink transmission duration X, then in operation 112 / 122, the UE 110 restarts / resets the uplink transmission duration upon receiving the first indication 152 (e.g., upon having processed the first indication 152), rather than waiting for expiration of the current initial uplink transmission duration X. In some embodiments, the at least one first indication 152 may be received in a MAC control element (CE) 156. For example, the at least one first indication 152 may be received in a GNSS MAC CE. Alternatively or additionally, the at least one first indication 152 may be received in an RRC message 158. Alternatively or additionally, in some embodiments, at least one first indication 152 may be received in a timing advance command (TAC) 154. If a conventional TAC is used for the purpose of extending the uplink transmission duration, for example, the UE 110 restarts / resets the TAT and thus the uplink transmission duration each time the TAC is received, this will prevent the network side from transmitting a TAC to correct the timing advance (TA) without also extending the uplink transmission duration. Table 1 below shows the structure of a conventional TAC. Table 1

[0041] As shown in Table 1, bits 2 to 6 are used to correct the TA, and bits 0 to 1 are used to indicate the identifier (ID) of the timing advance group (TAG). Because NTN deployments generally do not utilize carrier aggregation (CA) or dual connectivity (DC) to which TAGs are generally applied, bits 0 and 1 may be used to extend the uplink transmission duration instead of the TAG ID. For example, bit 0 or 1 may be used as a flag indicating whether an extension of the uplink transmission duration is allowed. Alternatively, if the NTN operation does not require the entire range of TAC values, one or more of bits 2-7 may be used as a flag. Therefore, at least one first indication 152 may be received in the TAC 154, including a flag indicating whether an extension of the uplink transmission duration is allowed. If the flag indicates that an extension of the uplink transmission duration is allowed, in operation 112 / 122, the UE 110 may extend the uplink transmission duration. A TAC including the flag may also be received before the initial uplink transmission duration is extended (ie, when the GNSS validity period has not expired). In this case, the TAC including the flag may be used to indicate whether the initial extension is allowed. During the extended uplink transmission duration, UE 110 may potentially perform uplink transmissions. As described above, in some embodiments, the network device 150 may transmit a second indication 162 to the UE 110 to instruct the UE 110 to stop the uplink transmission duration. In some embodiments, the network device 150 may transmit the second indication 162 in the TAC 164. Similar to the TAC 154, the TAC 164 is a variant of the traditional TAC. For example, if one of bit 0 and bit 1 is used as a flag indicating whether the uplink transmission duration is allowed to be extended, the same bit may be used as a flag indicating that the uplink transmission duration is prohibited from being extended, i.e., the uplink transmission duration is stopped, but with a flipped / opposite value, for example, bit = 1 indicates that the extension is allowed / can continue, while bit = 0 indicates that the extension is not allowed (i.e., prohibited) / should be stopped. Upon receiving the TAC 164 including a flag indicating that the extension of the uplink transmission duration is prohibited, in operation 114, the UE 110 stops the uplink transmission duration. Alternatively or additionally, in some embodiments, the network device 150 may transmit the second indication 162 in a MAC CE 166 (eg, a GNSS MAC CE). Alternatively or additionally, in some embodiments, the network device 150 may transmit the second indication 162 in an RRC message 168. In some embodiments, the second indication 162 may explicitly instruct the UE 110 to stop the uplink transmission duration. Alternatively, in some embodiments, the second indication 162 may implicitly instruct the UE 110 to stop the uplink transmission duration. For example, the second indication 162 may trigger the UE 110 to perform aperiodic location measurement, thereby implicitly instructing the UE 110 to stop the uplink transmission duration. Therefore, in operation 116, the UE 110 may perform aperiodic location measurement. For example, the second indication 162 may release the UE 110 to an idle or inactive mode, thereby implicitly instructing the UE 110 to stop the uplink transmission duration. Therefore, in operation 118, the UE 110 may enter an RRC idle or inactive mode. For example, the UE 110 may be configured to autonomously perform location measurement if the second indication 162 is received. Therefore, the second indication 162 implicitly instructs the UE 110 to stop the uplink transmission duration, and in operation 120, the UE 110 may autonomously perform location measurement. Regardless of whether the second indication 162 explicitly or implicitly instructs UE 110 to stop the uplink transmission duration, if the second indication 162 is received, in some embodiments, UE 110 stops the uplink transmission duration when the current uplink transmission duration expires. Alternatively, in some embodiments, UE 110 stops the uplink transmission duration when the second indication 162 is received (for example, when the second indication 162 has been processed). In the case where UE 110 is required to stop the uplink transmission duration when the uplink transmission duration extended according to (one or more) first indications 152 expires, after the uplink transmission duration expires, in some embodiments, in operation 128, UE 110 can enter RRC idle or inactive mode, or, in some embodiments, in operation 130, UE 110 can autonomously perform location measurement, or, in some embodiments, network device 150 can trigger UE 110 to perform non-periodic location measurement, and in this case, in operation 126, UE 110 performs non-periodic location measurement. Exemplary embodiments of the present disclosure enable the network side to dynamically control whether uplink transmission is allowed, which may be particularly useful in scenarios where the network side is uncertain whether the UE can start moving. In addition, according to exemplary embodiments of the present disclosure, if the UE has initially been indicated a short GNSS validity period, but has not actually moved, i.e., no new GNSS measurements are required, then extending the duration of allowing uplink transmission is very useful. Figure 2A flow chart showing an example method 200 for uplink transmission duration extension according to an exemplary embodiment of the present disclosure is shown. The example method 200 may be performed, for example, by an apparatus for a terminal device such as the UE 110 described above. refer to Figure 2 , the example method 200 may include: an operation 210 of receiving at least one first indication from a network device, the at least one first indication indicating whether a terminal device is allowed to extend an uplink transmission duration in which uplink transmission is allowed after the location validity period expires; and performing one of the following: if the at least one first indication allows the terminal device to extend the uplink transmission duration, then according to the at least one first indication, the uplink transmission duration is extended until a second indication is received from the network device indicating that the terminal device stops the uplink transmission duration. Operation 220, or if each of the received multiple first indications allows the terminal device to extend the uplink transmission duration, then according to each of the multiple first indications, the uplink transmission duration is extended. Operation 230, and when the uplink transmission duration extended according to each of the first indications expires, the uplink transmission duration is stopped. Operation 240. The details of operation 210 have been described above in the description of at least the first indication 152, and a repeated description is omitted here. The details of operation 220 have been described above in the description of at least operations 112 and 114 and the second indication 162 , and a repeated description is omitted here. The details of operation 230 have been described above in the description of at least operation 122, and a repeated description is omitted here. The details of operation 240 have been described above in the description of at least operation 124, and a repeated description is omitted here. In some embodiments, the initial uplink transmission duration is a duration X, which is the remaining time of a timer for uplink time alignment or a configured value when the timer for uplink time alignment is infinite, the at least one first indication indicates a number M, and the example method 200 may include an operation of extending the uplink transmission duration by M times X. More details have been described above in the description of at least operations 112 / 122, and their repeated description is omitted here. In some embodiments, the initial uplink transmission duration is a duration X, which is the remaining time of a timer for uplink time alignment or a configuration value when the timer for uplink time alignment is indefinite, at least one first indication indicates a factor K or a duration Z, and the example method 200 may include: extending the uplink transmission duration by amplifying X by K times or replacing it by Z. More details have been described above in the description of at least operations 112 / 122, and their repeated description is omitted here. In some embodiments, the example method 200 may include: restarting the operation of the uplink transmission duration when the current uplink transmission duration expires. More details have been described above in the description of at least operations 112 / 122, and their repeated description is omitted here. In some embodiments, the example method 200 may include: restarting the operation of the uplink transmission duration upon receiving the at least one first indication. More details have been described above with respect to at least operations 112 / 122, and a repeated description thereof is omitted here. In some embodiments, at least one first indication is received in a TAC including a flag indicating whether extension of uplink transmission duration is allowed. More details have been described above with respect to at least the TAC 154, and a repeated description thereof is omitted here. In some embodiments, the at least one first indication is received in a MAC CE or an RRC message.More details have been described above with respect to at least the MAC CE 156 and the RRC message 158, and a repeated description thereof is omitted here. In some embodiments, the second indication is received in a TAC, a MAC CE, or an RRC message, wherein the TAC includes a flag indicating that the uplink transmission duration is prohibited from being extended. More details have been described above with respect to at least TAC 164, MAC CE 166, and RRC message 168, and their repeated description is omitted here. In some embodiments, the second indication triggers the terminal device to perform aperiodic location measurement.More details have been described above in the description of at least the second indication 162 and operations 114 and 116, and their repeated description is omitted here. In some embodiments, the second indication releases the terminal device to an idle or inactive mode.More details have been described above in the description of at least the second indication 162 and operations 114 and 118, and a repeated description thereof is omitted here. In some embodiments, the example method 200 may include autonomously performing a location measurement operation if the second indication is received. More details have been described above regarding at least the second indication 162 and operations 114 and 120, and a repeated description thereof is omitted here. In some embodiments, the example method 200 may include: if the second indication is received, stopping the operation of the uplink transmission duration when the current uplink transmission duration expires. More details have been described above in the description of at least operations 114 / 124, and their repeated description is omitted here. In some embodiments, the example method 200 may include: stopping the operation of the uplink transmission duration upon receiving the second indication.More details have been described above with respect to at least operations 114 / 124, and a repeated description thereof is omitted here. Figure 3 A flow chart illustrating an example method 300 for uplink transmission duration extension according to an example embodiment of the present disclosure is shown. The example method 300 may be performed, for example, by an apparatus for a network device such as the network device 150 described above. refer to Figure 3 , the example method 300 may include: operation 310, transmitting at least one first indication to the terminal device, which indicates whether the terminal device is allowed to extend the uplink transmission duration in which the uplink transmission is allowed after the location validity period expires, wherein, if the at least one first indication allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to the at least one first indication until a second indication is received from the network device instructing the terminal device to stop the uplink transmission duration; or, if each of the received multiple first indications allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to each of the received multiple first indications, and the uplink transmission duration needs to be stopped when the uplink transmission duration extended according to each of the first indications expires. Details of operation 310 have been described above in the description of at least the first indication 152 , the second indication 162 , operations 112 / 122 , and operations 114 / 124 , and a repeated description is omitted here. In some embodiments, the initial uplink transmission duration is a duration X, which is the remaining time of the uplink time alignment timer or a configuration value when the timer for uplink time alignment is infinite, at least one first indication indicates a number M, and the terminal device is allowed to extend the uplink transmission duration by M times X. More details have been described above in the description of at least operation 112 / 122, and a repeated description thereof is omitted here. In some embodiments, the initial uplink transmission duration is a duration X, which is the remaining time of the uplink time alignment timer or a configuration value when the timer for uplink time alignment is infinite, at least one first indication indicates a factor K or a duration Z, and the terminal device is allowed to extend the uplink transmission duration by X, amplify K times or replace Z. More details have been described in the above description of at least operation 112 / 122, and their repeated description is omitted here. In some embodiments, at least one first indication is transmitted in a timing advance command, the timing advance command including a flag indicating whether extension of uplink transmission duration is allowed.More details have been described above with respect to at least TAC 154, and a repeated description thereof is omitted here. In some embodiments, the at least one first indication is transmitted in a MAC CE or an RRC message.More details have been described above with respect to at least the MAC CE 156 and the RRC message 158, and a repeated description thereof is omitted here. In some embodiments, the second indication is transmitted in a timing advance command, a MAC control element, or a radio resource control message, wherein the timing advance command includes a flag indicating that the uplink transmission duration is prohibited from being extended. More details have been described above with respect to at least TAC 164, MAC CE 166, and RRC message 168, and their repeated description is omitted here. In some embodiments, the second indication triggers the terminal device to perform aperiodic location measurement.More details have been described above in the description of at least the second indication 162 and operations 114 and 116, and their repeated description is omitted here. In some embodiments, the second indication releases the terminal device to an idle or inactive mode.More details have been described above in the description of at least the second indication 162 and operations 114 and 118, and a repeated description thereof is omitted here. Figure 4 A block diagram showing an example apparatus 400 for uplink transmission duration extension according to an exemplary embodiment of the present disclosure is shown. For example, the apparatus may be at least a part of an apparatus for a terminal device such as the UE 110 in the above example. like Figure 4 As shown, the example apparatus 400 may include at least one processor 410 and at least one memory 420 that may store instructions 430. The instructions 430, when executed by the at least one processor 410, may cause the apparatus 400 to perform at least the example method 200 described above. In various exemplary embodiments, at least one processor 410 in the example device 400 may include, but is not limited to, at least one hardware processor, including at least one microprocessor such as a central processing unit (CPU), a portion of at least one hardware processor, and any other suitable dedicated processor such as those developed based on, for example, a field programmable gate array (FPGA) and an application specific integrated circuit (ASIC). In addition, the at least one processor 410 may also include Figure 4 At least one other circuit or element not shown. In various exemplary embodiments, at least one memory 420 in the example device 400 may include at least one storage medium in various forms, such as temporary memory and / or non-temporary memory. Temporary memory may include, but is not limited to, for example, random access memory (RAM), cache, etc. Non-temporary memory may include, but is not limited to, for example, read-only memory (ROM), hard disk, flash memory, etc. As used herein, the term "non-temporary" is a limitation of the medium itself (i.e., tangible, not a signal), rather than a limitation on the persistence of data storage (e.g., RAM versus ROM). In addition, at least one memory 420 may include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or apparatuses, or any combination of the foregoing. Furthermore, in various exemplary embodiments, the example apparatus 400 may further include at least one other circuit, element, and interface, such as at least one I / O interface, at least one antenna element, and the like. In various exemplary embodiments, the circuits, components, elements, and interfaces in the example device 400, including at least one processor 410 and at least one memory 420, can be coupled together in any suitable manner (e.g., electrically, magnetically, optically, electromagnetically, etc.) via any suitable connection (including but not limited to buses, switching lines, wiring, and / or wireless lines). It should be understood that the structure of the device on the UE 110 side is not limited to the above-mentioned example device 400. Figure 5 A block diagram illustrating an example apparatus 500 for uplink transmission duration extension according to an exemplary embodiment of the present disclosure is shown. For example, the apparatus may be at least a portion of an apparatus for a network device such as the network device 150 in the above example. like Figure 5As shown, the example apparatus 500 may include at least one processor 510 and at least one memory 520 that may store instructions 530. The instructions 530, when executed by the at least one processor 510, may cause the device 500 to perform at least the example method 300 described above. In various exemplary embodiments, at least one processor 510 in the example device 500 may include, but is not limited to, at least one hardware processor, including at least one microprocessor such as a central processing unit (CPU), a portion of at least one hardware processor, and any other suitable dedicated processor such as those developed based on, for example, a field programmable gate array (FPGA) and an application specific integrated circuit (ASIC). In addition, the at least one processor 510 may also include Figure 5 At least one other circuit or element not shown. In various exemplary embodiments, at least one memory 520 in the example device 500 may include at least one storage medium in various forms, such as temporary memory and / or non-temporary memory. Temporary memory may include, but is not limited to, for example, random access memory (RAM), cache, etc. Non-temporary memory may include, but is not limited to, for example, read-only memory (ROM), hard disk, flash memory, etc. As used herein, the term "non-temporary" is a limitation of the medium itself (i.e., tangible, not a signal), rather than a limitation on the persistence of data storage (e.g., RAM versus ROM). In addition, at least one memory 520 may include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or apparatuses, or any combination of the foregoing. Furthermore, in various exemplary embodiments, the example apparatus 500 may further include at least one other circuit, element, and interface, such as at least one I / O interface, at least one antenna element, and the like. In various exemplary embodiments, the circuits, components, elements, and interfaces in the example device 500, including at least one processor 510 and at least one memory 520, may be coupled together in any suitable manner (e.g., electrically, magnetically, optically, electromagnetically, etc.) via any suitable connection (including, but not limited to, buses, switching lines, wiring, and / or wireless lines). It should be understood that the structure of the device on the network device 150 side is not limited to the above-mentioned example device 500. Figure 6 A block diagram illustrating an example device 600 for uplink transmission duration extension according to an exemplary embodiment of the present disclosure is shown. For example, the device may be at least a part of a terminal device such as the UE 110 in the above-mentioned example. like Figure 6As shown, the example device 600 may include: a device 610 for receiving at least one first indication from a network device, the at least one first indication indicating whether the terminal device is allowed to extend the uplink transmission duration in which the uplink transmission is allowed after the location validity period expires; and a device 620 for performing one of the following: if the at least one first indication allows the terminal device to extend the uplink transmission duration, then extending the uplink transmission duration according to the at least one first indication until a second indication is received from the network device instructing the terminal device to stop the uplink transmission duration; or, if each of the multiple first indications received allows the terminal device to extend the uplink transmission duration, then extending the uplink transmission duration according to each of the received first indications, and stopping the uplink transmission duration when the uplink transmission duration extended according to each of the first indications expires. In some embodiments, the initial uplink transmission duration is a duration X, which is the remaining time of a timer for uplink time alignment or a configuration value when the timer for uplink time alignment is infinite, the at least one first indication indicates a number M, and the device 600 may include a device for extending the uplink transmission duration by M times X. In some embodiments, the initial uplink transmission duration is a duration X, which is the remaining time of a timer for uplink time alignment or a configured value when the timer for uplink time alignment is infinite, at least one first indication indicates a factor K or a duration Z, and the device 600 may include a device for extending the uplink transmission duration by amplifying X by K times or replacing it by Z. In some embodiments, the apparatus 600 may include means for restarting an uplink transmission duration when a current uplink transmission duration expires. In some embodiments, the apparatus 600 may include means for restarting the uplink transmission duration upon receiving the at least one first indication. In some embodiments, the at least one first indication is received in a TAC comprising a flag indicating whether extension of uplink transmission duration is permitted. In some embodiments, the at least one first indication is received in a MAC CE or an RRC message. In some embodiments, the second indication is received in a TAC, a MAC CE, or an RRC message, the TAC including a flag indicating that extension of uplink transmission duration is prohibited. In some embodiments, the second indication triggers the terminal device to perform aperiodic location measurement. In some embodiments, the second indication releases the terminal device into an idle or inactive mode. In some embodiments, device 600 may include means for autonomously performing a position measurement if the second indication is received. In some embodiments, the apparatus 600 may include means for stopping the uplink transmission duration when the current uplink transmission duration expires if the second indication is received. In some embodiments, the apparatus 600 may include means for stopping the uplink transmission duration upon receiving the second indication. In some exemplary embodiments, an example of an apparatus in example device 600 may include circuitry. For example, an example of apparatus 610 may include circuitry configured to perform operation 210 of example method 200, and an example of apparatus 620 may include circuitry configured to perform operation 220 or operations 230 and 240 of example method 200. The example apparatus 600 may also include an apparatus having circuitry configured to perform the example method 200. In some example embodiments, examples of an apparatus may also include a software module and any other suitable functional entity. Figure 7 A block diagram showing an example device 700 for uplink transmission duration extension according to an exemplary embodiment of the present disclosure is shown. For example, the device may be at least a portion of a network device such as the network device 150 in the above example. like Figure 7 As shown, the example device 700 may include: a device 710 for transmitting to a terminal device at least one first indication indicating whether the terminal device is allowed to extend the uplink transmission duration in which the uplink transmission is allowed after the location validity period expires, wherein, if the at least one first indication allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to the at least one first indication until a second indication is received from the network device indicating that the terminal device stops the uplink transmission duration; or, if each of the received multiple first indications allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to each of the at least one first indication, and when the uplink transmission duration extended according to each of the first indications expires, the uplink transmission duration needs to be stopped. In some embodiments, the initial uplink transmission duration is a duration X, which is the remaining time of a timer for uplink time alignment or a configuration value when the timer for uplink time alignment is infinite, at least one first indication indicates a number M, and the terminal device is allowed to extend the uplink transmission duration by M times X. In some embodiments, the initial uplink transmission duration is a duration X, which is the remaining time of a timer for uplink time alignment or a configuration value when the timer for uplink time alignment is infinite, at least one first indication indicates a factor K or a duration Z, and the terminal device is allowed to extend the uplink transmission duration by amplifying X by K times or replacing it by Z. In some embodiments, the at least one first indication is transmitted in a timing advance command comprising a flag indicating whether extension of uplink transmission duration is permitted. In some embodiments, the at least one first indication is transmitted in a MAC CE or an RRC message. In some embodiments, the second indication is transmitted in a timing advance command, a MAC control element, or a radio resource control message, the timing advance command comprising a flag indicating that extension of the uplink transmission duration is prohibited. In some embodiments, the second indication triggers the terminal device to perform aperiodic location measurement. In some embodiments, the second indication releases the terminal device into an idle or inactive mode. In some example embodiments, an example of means in the example device 700 may include circuitry. For example, an example of means 710 may include circuitry configured to perform operation 310 of the example method 300. The example apparatus 700 may also include an apparatus having circuitry configured to perform the example method 300. In some example embodiments, examples of an apparatus may also include a software module and any other suitable functional entity. Exemplary embodiments of the present disclosure also provide a computer-readable medium comprising program instructions, which, when executed by an apparatus for a terminal device such as UE 110 in the above example, can cause the terminal device to at least: receive at least one first indication from a network device, the at least one first indication indicating whether the terminal device is allowed to extend an uplink transmission duration in which uplink transmission is allowed after the location validity period expires; and perform one of the following operations: if the at least one first indication allows the terminal device to extend the uplink transmission duration, extend the uplink transmission duration according to the at least one first indication until a second indication is received from the network device instructing the terminal device to stop the uplink transmission duration; or, if each of the multiple first indications received allows the terminal device to extend the uplink transmission duration, extend the uplink transmission duration according to each of the multiple first indications received, and when the uplink transmission duration extended according to each of the first indications expires, stop the uplink transmission duration. In some embodiments, the initial uplink transmission duration is a duration X, which is the remaining time of a timer for uplink time alignment or a configuration value when the timer for uplink time alignment is infinite, at least one first indication indicates a number M, and the computer-readable medium may include instructions that, when executed by the apparatus, may cause the terminal device to: extend the uplink transmission duration by M times X. In some embodiments, the initial uplink transmission duration is a duration X, which is the remaining time of a timer for uplink time alignment or a configuration value when the timer for uplink time alignment is infinite, at least one first indication factor K or duration Z, and the computer-readable medium may include instructions that, when executed by the apparatus, may cause the terminal device to: extend the uplink transmission duration by a factor of K or replace it by Z. In some embodiments, the computer-readable medium may include instructions, which when executed by the apparatus may cause the terminal device to: restart the uplink transmission duration when the current uplink transmission duration expires. In some embodiments, the computer-readable medium may include instructions which, when executed by the apparatus, may cause the terminal device to: restart the uplink transmission duration upon receiving at least one first indication. In some embodiments, the at least one first indication is received in a TAC comprising a flag indicating whether extension of uplink transmission duration is permitted. In some embodiments, the at least one first indication is received in a MAC CE or an RRC message. In some embodiments, the second indication is received in a TAC, a MAC CE, or an RRC message, the TAC including a flag indicating that extension of uplink transmission duration is prohibited. In some embodiments, the second indication triggers the terminal device to perform aperiodic location measurement. In some embodiments, the second indication releases the terminal device into an idle or inactive mode. In some embodiments, the computer-readable medium may include instructions that, when executed by the apparatus, may cause the terminal device to autonomously perform position measurement if the second indication is received. In some embodiments, the computer-readable medium may include instructions which, when executed by the apparatus, may cause the terminal device to: if the second indication is received, stop the uplink transmission duration when the current uplink transmission duration expires. In some embodiments, the computer-readable medium may include instructions which, when executed by the apparatus, may cause the terminal device to: stop the uplink transmission duration upon receiving the second indication. An exemplary embodiment of the present disclosure also provides a computer-readable medium including program instructions, which, when executed by an apparatus for a network device such as the network device 150 in the above example, can enable the network device to at least: transmit to a terminal device at least one first indication indicating whether the terminal device is allowed to extend an uplink transmission duration in which uplink transmission is allowed after the location validity period expires, wherein, if the at least one first indication allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to the at least one first indication until a second indication is received from the network device indicating that the terminal device stops the uplink transmission duration; or, if each of the multiple first indications received allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to each of the multiple first indications received, and when the uplink transmission duration extended according to each of the first indications expires, the uplink transmission duration needs to be stopped. In some embodiments, the initial uplink transmission duration is a duration X, which is the remaining time of a timer for uplink time alignment or a configuration value of a timer for uplink time alignment, at least one first indication indicates a number M, and the terminal device is allowed to extend the uplink transmission duration by M times X. In some embodiments, the initial uplink transmission duration is a duration X, which is the remaining time of a timer for uplink time alignment or a configuration value when the timer for uplink time alignment is infinite, at least one first indication indicates a factor K or a duration Z, and the terminal device is allowed to extend the uplink transmission duration by amplifying X by K times or replacing it by Z. In some embodiments, the at least one first indication is transmitted in a timing advance command comprising a flag indicating whether extension of uplink transmission duration is permitted. In some embodiments, the at least one first indication is transmitted in a MAC CE or an RRC message. In some embodiments, the second indication is transmitted in a timing advance command, a MAC control element, or a radio resource control message, the timing advance command comprising a flag indicating that extension of the uplink transmission duration is prohibited. In some embodiments, the second indication triggers the terminal device to perform aperiodic location measurement. In some embodiments, the second indication releases the terminal device into an idle or inactive mode. As used herein, “at least one of: ” and “at least one of ” and similar expressions, where a list of two or more elements is connected by “and” or “or”, mean at least any one of the elements, or at least any two or more of the elements, or at least all of the elements. The term "terminal device" refers to any terminal device capable of wireless communication. As an example and not limitation, the terminal device may also be referred to as a communication device, a user equipment (UE), a subscriber station (SS), a portable subscriber station, a mobile station (MS), or an access terminal (AT). The terminal device may include, but is not limited to, a mobile phone, a cellular phone, a smart phone, a voice over IP (VoIP) phone, a wireless local loop phone, a tablet computer, a wearable terminal device, a personal digital assistant (PDA), a portable computer, a desktop computer, an image capture terminal device such as a digital camera, a game terminal device, a music storage and playback device, a vehicle-mounted wireless terminal device, a wireless endpoint, a mobile station, a laptop embedded device (LEE), a laptop mounted device (LME), a USB dongle, a smart device, a wireless customer premises equipment (CPE), an Internet of Things (IoT) device, a watch or other wearable device, a head mounted display (HMD), a vehicle, a drone, medical equipment and applications (e.g., remote surgery), industrial equipment and applications (e.g., robots and / or other wireless devices operating in industrial and / or automated processing chain environments), consumer electronic devices, equipment operating on commercial and / or industrial wireless networks, etc. The terminal device may also correspond to the mobile terminal (MT) part of an IAB node (eg, a relay node).In the above description, the terms "terminal device", "communication device", "terminal", "user equipment" and "UE" may be used interchangeably. The term "circuitry" throughout this disclosure may refer to one or more or all of the following: (a) a hardware circuit implementation only (such as an implementation in analog and / or digital circuits only); (b) a combination of hardware circuitry and software, such as (i) a combination of analog and / or digital hardware circuitry and software / firmware, as applicable, and (ii) a hardware processor (including a digital signal processor) with software, software, and any portion of memory that work together to enable a device such as a mobile phone or server to perform various functions); and (c) a hardware circuit and / or processor, such as a microprocessor or a portion of a microprocessor, that requires software (e.g., firmware) for operation, but the software may not be present when software is not required for operation. This definition of circuitry applies to one or all uses of the term in this disclosure, including in any claims. As another example, as used in this disclosure, the term circuitry also encompasses an implementation of a hardware circuit or processor (or multiple processors) or a portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term circuitry also encompasses, for example and if applicable to a claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in a server, cellular network device, or other computing or network device. Another exemplary embodiment may involve computer program code or instructions that can cause an apparatus to perform at least the above-described corresponding methods. Another exemplary embodiment may involve a computer readable medium having such computer program code or instructions stored thereon. In some embodiments, such a computer readable medium may include at least one storage medium in various forms, such as volatile memory and / or non-volatile memory. Volatile memory may include, but is not limited to, for example, RAM, cache, etc. Non-volatile memory may include, but is not limited to, ROM, hard disk, flash memory, etc. Non-volatile memory may also include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or apparatuses or any combination of the above. Unless the context clearly requires otherwise, throughout the specification and claims, the words "include", "comprises", etc. should be interpreted as inclusive, rather than exclusive or exhaustive; that is, in the sense of "including but not limited to". As generally used herein, the word "coupled" refers to two or more elements that can be directly connected or connected through one or more intermediate elements. Similarly, as generally used herein, the word "connected" refers to two or more elements that can be directly connected or connected through one or more intermediate elements. In addition, when used in this application, the words "herein", "above", "below" and words with similar meanings should refer to the entire application, rather than to any particular part of the application. Where the context permits, words used in the description in the singular or plural may also include the plural or singular, respectively. The word "or" refers to a list of two or more items, which covers all the following interpretations of the word: any item in the list, all items in the list, and any combination of items in the list. Furthermore, conditional language used herein, such as "can," "may," "might," "could," "for example," "such as," and the like, unless otherwise specifically stated or understood otherwise in the context of use, is generally intended to convey that certain embodiments include and other embodiments do not include certain features, elements, and / or states. Thus, such conditional language is generally not intended to imply that features, elements, and / or states are in any way required for one or more embodiments, or that one or more embodiments must include logic for deciding, with or without author input or prompting, whether such features, elements, and / or states are included in any particular embodiment or are to be executed. As used herein, the term "determine / determine" (and its grammatical variations) may include, but are not limited to: calculate, compute, process, derive, measure, investigate, look up (e.g., look up in a table, a database, or another data structure), determine, etc. In addition, "determine" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), obtaining, etc. In addition, "determine / determine" may include parsing, selecting, choosing, establishing, etc. Although some embodiments have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the present disclosure. In fact, the devices, methods, and systems described herein may be embodied in various other forms; in addition, various omissions, substitutions, and changes may be made to the forms of the methods and systems described herein without departing from the spirit of the present disclosure. For example, although the boxes are presented in a given arrangement, alternative embodiments may utilize different components and / or circuit topologies to perform similar functions, and may delete, move, add, subdivide, combine, and / or modify some boxes. At least one of these boxes may be implemented in various different ways. The order of these boxes may also be changed. Any suitable combination of the elements and actions of some of the above-described embodiments may be combined to provide additional embodiments. The attached claims and their equivalents are intended to cover such forms or modifications that fall within the scope and spirit of the present disclosure. The abbreviations used in the specification and / or drawings are defined as follows: 3GPP TS Third Generation Partnership Project Technical Specification BS Base Station CA Carrier Aggregation CE Control Components DC Dual Connection eMTC Enhanced Machine Type Communication eNB Evolved Node B gNB Next Generation Node B GNSS Global Navigation Satellite System ID Identifier IoT MAC Media Access Control NTN Non-Terrestrial Network RRC Radio Resource Control TA Timing Advance TAC Timing Advance Command TAG Timing Advance Group TAT Time Alignment Timer UE User Equipment

Claims

1. A device for a terminal device, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the terminal device to at least: receiving at least one first indication from a network device indicating whether the terminal device is allowed to extend an uplink transmission duration in which uplink transmission is allowed after expiration of a location validity period; and Do one of the following: If the at least one first indication allows the terminal device to extend the uplink transmission duration, extending the uplink transmission duration according to the at least one first indication until a second indication instructing the terminal device to stop the uplink transmission duration is received from the network device, or If each of the multiple first indications received allows the terminal device to extend the uplink transmission duration, the uplink transmission duration is extended according to each of the multiple first indications received, and when the uplink transmission duration extended according to each of the first indications expires, the uplink transmission duration is stopped.

2. The device according to claim 1, wherein: The initial uplink transmission duration is a duration X, which is a remaining time of a timer for uplink time alignment or a configured value when the timer for uplink time alignment is infinite, the at least one first indication indicates a number M, and the apparatus is configured to: The uplink transmission duration is extended by M times X.

3. The device according to claim 1, wherein: The initial uplink transmission duration is a duration X, the duration X being the remaining time of a timer for uplink time alignment or a configured value when the timer for uplink time alignment is infinite, the at least one first indication indicating a duration Z, and the apparatus being configured to: The uplink transmission duration is extended by X replaced by Z.

4. The device according to any one of claims 1 to 3, wherein: The device is configured to: When the current uplink transmission duration expires, the uplink transmission duration is restarted.

5. The device according to any one of claims 1 to 3, wherein: The device is configured to: The uplink transmission duration is restarted upon receipt of the at least one first indication.

6. The device according to any one of claims 1 to 3, wherein: The at least one first indication is received in a timing advance command, the timing advance command comprising a flag indicating whether extension of the uplink transmission duration is permitted.

7. The device according to any one of claims 1 to 3, wherein: The at least one first indication is received in a radio resource control message.

8. The device according to any one of claims 1 to 3, wherein: The second indication is received in a MAC control element.

9. The device according to any one of claims 1 to 3, wherein: The second indication triggers the terminal device to perform non-periodic location measurement.

10. The device according to any one of claims 1 to 3, wherein: The device is configured to: The uplink transmission duration is stopped upon receiving the second indication.

11. An apparatus for a network device, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the network device to at least: transmitting at least one first indication to a terminal device, which indicates whether the terminal device is allowed to extend an uplink transmission duration in which uplink transmission is allowed after expiration of a location validity period, wherein If the at least one first indication allows the terminal device to extend the uplink transmission duration, allowing the terminal device to extend the uplink transmission duration according to the at least one first indication until a second indication instructing the terminal device to stop the uplink transmission duration is received from the network device, or If each of the multiple first indications received allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to each of the multiple first indications received, and when the uplink transmission duration extended according to each of the first indications expires, the terminal device is required to stop the uplink transmission duration.

12. The device of claim 11, wherein: The initial uplink transmission duration is a duration X, where the duration X is the remaining time of a timer for uplink time alignment or a configuration value when the timer for uplink time alignment is infinite, and the at least one first indication indicates a number M, and allows the terminal device to extend the uplink transmission duration by M times X.

13. The device of claim 12, wherein: The initial uplink transmission duration is a duration X, where the duration X is the remaining time of a timer for uplink time alignment or a configuration value when the timer for uplink time alignment is infinite, and the at least one first indication indicates a duration Z, and allows the terminal device to extend the uplink transmission duration by X replaced by Z.

14. The device according to any one of claims 11 to 13, wherein: The at least one first indication is transmitted in a radio resource control message.

15. The device according to any one of claims 11 to 13, wherein: The second indication is transmitted in a MAC control element.

16. The device according to any one of claims 11 to 13, wherein: The second indication triggers the terminal device to perform non-periodic location measurement.

17. A method performed by an apparatus for a terminal device, comprising: receiving at least one first indication from a network device indicating whether the terminal device is allowed to extend an uplink transmission duration in which uplink transmission is allowed after expiration of a location validity period; and Do one of the following: If the at least one first indication allows the terminal device to extend the uplink transmission duration, extending the uplink transmission duration according to the at least one first indication until a second indication instructing the terminal device to stop the uplink transmission duration is received from the network device, or If each of the multiple first indications received allows the terminal device to extend the uplink transmission duration, the uplink transmission duration is extended according to each of the multiple first indications received, and when the uplink transmission duration extended according to each of the first indications expires, the uplink transmission duration is stopped.

18. The method according to claim 17, wherein: The initial uplink transmission duration is a duration X, the duration X being the remaining time of a timer for uplink time alignment or a configured value when the timer for uplink time alignment is infinite, the at least one first indication indicating a number M, and the method comprising: The uplink transmission duration is extended by M times X.

19. The method according to claim 17, wherein: The initial uplink transmission duration is a duration X, the duration X being the remaining time of a timer for uplink time alignment or a configured value when the timer for uplink time alignment is infinite, the at least one first indication indicating a duration Z, and the method comprising: The uplink transmission duration is extended by X replaced by Z.

20. The method of any one of claims 17 to 19, comprising: The uplink transmission duration is restarted upon receipt of the at least one first indication.

21. The method according to any one of claims 17 to 19, wherein: The at least one first indication is received in a radio resource control message.

22. The method of any one of claims 17 to 19, comprising: The uplink transmission duration is stopped upon receiving the second indication.

23. A method performed by an apparatus for a network device, comprising: transmitting at least one first indication to a terminal device, which indicates whether the terminal device is allowed to extend an uplink transmission duration in which uplink transmission is allowed after expiration of a location validity period, wherein If the at least one first indication allows the terminal device to extend the uplink transmission duration, allowing the terminal device to extend the uplink transmission duration according to the at least one first indication until a second indication instructing the terminal device to stop the uplink transmission duration is received from the network device, or If each of the multiple first indications received allows the terminal device to extend the uplink transmission duration, the terminal device is allowed to extend the uplink transmission duration according to each of the multiple first indications received, and when the uplink transmission duration extended according to each of the first indications expires, the terminal device is required to stop the uplink transmission duration.

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