Method and apparatus for acquiring information on initial position

Description

1 / 25 METHOD AND APPARATUS FOR ACQUIRING INFORMATION ON INITIAL POSITION TECHNICAL FIELD

[0001] This patent document is generally directed to wireless communications. BACKGROUND

[0002] Wireless communication technologies are moving the world toward an increasingly connected and networked society. The rapid growth of wireless communications and technological advancements have led to a greater demand for capacity and connectivity. Other aspects, such as power consumption, device cost, spectral efficiency, and latency, are also important to meet the needs of diverse communication scenarios. Compared to existing wireless networks, next-generation wireless communication systems and techniques need to support a larger number of users and devices, as well as support an increasingly mobile society. SUMMARY

[0003] Several techniques that can be implemented through modalities in mobile communication technology are described, including 5th generation (5G) systems, new radio (NR) and non-terrestrial network (NTN).

[0004] In an exemplary aspect, a wireless communication method is described. The method includes transmitting, by a wireless device to a network device, an indication that indicates that the wireless device is initiating a position reacquisition procedure at a first time prior to a second time according to a rule for initiating the position reacquisition procedure.

[0005] In another illustrative aspect, another method of wireless communication is described. The method involves receiving, by a device of Petition 870250091193, dated 06 / 10 / 2025, page 7 / 59 2 / 25 network, from a wireless device, an indication that indicates that the wireless device is initiating a position reacquisition procedure at a first time prior to a second time according to a rule for initiating the position reacquisition procedure; and perform a subsequent operation based on the indication.

[0006] In another exemplary aspect, another method of wireless communication is described. The method includes transmitting, by a wireless device to a network device, an indication that indicates that the wireless device has completed a position reacquisition procedure initiated at a first time prior to a second time according to a rule for initiating the position reacquisition procedure.

[0007] In another exemplary aspect, another method of wireless communication is described. The method includes receiving, by a network device, from a wireless device, an indication that the wireless device has completed a position reacquisition procedure initiated at a first time prior to a second time according to a rule for initiating the position reacquisition procedure; and executing a subsequent operation based on the indication.

[0008] In another exemplary aspect, another method of wireless communication is described. The method includes transmitting, by a wireless device to a network device, an indication that the wireless device is initiating a position reacquisition procedure at a first time because the wireless device determines that the remaining validity time of a position fix information is less than a limit.

[0009] In another illustrative aspect, another method of wireless communication is described. The method involves receiving, by a network device, from a wireless device, an indication that the wireless device is initiating a reacquisition procedure of Petition 870250091193, dated 06 / 10 / 2025, page 8 / 59 3 / 25 position initially because the wireless device determines that the remaining validity time of a position fix information is less than a limit; and performs a subsequent operation based on the indication.

[0010] In another illustrative aspect, the methods described above are incorporated in the form of a computer-readable medium that stores processor-executable code to implement the method.

[0011] In another exemplary embodiment, a device configured or operable to execute the methods described above is described. The device comprises a processor configured to implement the method described above.

[0012] The above aspects and others and their implementations are described in more detail in the drawings, descriptions and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 illustrates an example of an NTN network.

[0014] Figure 2 illustrates example options for retrieving position information during an operation in connected mode.

[0015] Figure 3 illustrates an example of a discontinuous reception (Discontinuous Reception - DRX) cycle.

[0016] Figure 4A illustrates examples of early start for reacquisition of position information during the idle state of connected DRX mode (C-DRX).

[0017] Figure 4B illustrates examples of early start for reacquisition of position information during the idle state of connected DRX mode (C-DRX).

[0018] Figure 4C illustrates examples of early start for reacquisition of position information during the idle state of Petition 870250091193, dated 06 / 10 / 2025, page 9 / 59 4 / 25 connected DRX mode (C-DRX).

[0019] Figures 5A-5C are flowcharts that illustrate exemplary methods executed by wireless devices.

[0020] Figures 6A-6C are flowcharts that illustrate exemplary methods executed by network devices.

[0021] Figure 7 is an example of a block diagram of a wireless communication system.

[0022] Figure 8 is a flowchart of an exemplary method of wireless communication. DETAILED DESCRIPTION

[0023] The section headings are used in this document only to improve readability and do not limit the scope of the modalities and techniques described in each section to that section alone. Certain features are described using the example of the Fifth Generation (5G) wireless protocol. However, the applicability of the techniques described is not limited to 5G wireless systems.

[0024] 1. Introduction

[0025] In terrestrial network deployment, users and services are so concentrated that the network is primarily located in cities, factories, rural areas, etc. In sparsely populated locations, network deployment is expensive, difficult, or even unavailable. However, with advances in science and technology, there is a great demand for data collection and communication in remote regions. For example, to collect meteorological data on mountain peaks or in deserts.

[0026] In non-terrestrial deployments, satellites can provide wide coverage, even in remote regions. Deploying a non-terrestrial network can be considered to extend terrestrial network coverage and further expand the business of cellular network operators. The typical scenario for a non-terrestrial network providing access Petition 870250091193, dated 06 / 10 / 2025, page 10 / 59 5 / 25 to the user's equipment is illustrated in Figure 1.

[0027] As illustrated in Figure 1, one or more wireless devices, such as User Equipment (UE), may be within the coverage of a satellite or an Unmanned Aerial System (UAS) platform. Each ellipse on the left shows a coverage area of ​​a geographic region served by a beam.

[0028] The NTN Gateway is a ground station or gateway located on the Earth's surface that provides sufficient RF power and sensitivity for satellite access (respectively, HAPS). The NTN Gateway is a Transport Network Layer (TNL) node. The feed link is the wireless link between the NTN Gateway and the satellite. The service link is the radio link between the satellite and the UE. The satellite (or UAS platform) typically generates multiple beams over a defined service area delimited by its field of view. The beam footprints are typically elliptical in shape.

[0029] The satellite can be placed in Low Earth Orbit (Low Geostationary Earth Orbit (GEO) is a circular orbit 35,786 km above the Earth's equator, following the Earth's rotation direction. A GEO satellite in such an orbit has an orbital period equal to the Earth's rotation period and therefore appears stationary, in a fixed position in the sky, to terrestrial observers. The typical beamwidth of a GEO satellite is 200 to 3,500 km. Low Earth Orbit is an orbit around the Earth with an altitude between 300 km and 1,500 km. A LEO satellite in such an orbit travels around the Earth at a speed of 7.56 km per second. The typical beamwidth of a LEO satellite is 100 to 1,000 km.

[0030] In addition, the connectivity of the Internet of Things (Internet Petition 870250091193, dated 06 / 10 / 2025, p. 11 / 59 The 6 / 25 of Things (IoT) requires wide coverage, making it extremely necessary for the deployment of non-terrestrial networks. Therefore, narrowband IoT (NB-IoT) or enhanced machine-type communication (eMTC) in non-terrestrial networks (abbreviated as IoT NTN) is the trend in technological development.

[0031] 2. Reacquisition by the Global Navigation System by Satellite (Global Navigation Satellite System - GNSS) when the UE is in connected mode.

[0032] In the satellite scenario, the UE can obtain its own position information through GNSS acquisition. The radio network also transmits satellite assistance information, such as ephemeris information, via the system information, which facilitates the UE in tracking the satellite's position and calculating timing advance (TA) information.

[0033] After the UE obtains its own position and the satellite's position, it can calculate the distance between itself and the satellite and combine the timing advance information transmitted by the radio network to calculate the uplink synchronization information needed for the UE and the radio network to maintain uplink synchronization. However, the GNSS position fix information, ephemeris information, and timing advance information are only valid for a certain period of time, and when the validity timer expires, this information becomes invalid. This means that the timing advance calculated by the UE based on this information will also be invalid. The UE then needs to reacquire this information (the position information), calculate the timing advance value, and obtain uplink synchronization again. Here, a validity duration timer in Petition 870250091193, dated 06 / 10 / 2025, page 12 / 59 7 / 25 GNSS and a validity duration timer for TA are used to determine if GNSS and TA are still valid, respectively.

[0034] In version 17 (R17) of 3GPP IoT NTN, the UE connection is generally assumed to be short, as it is primarily intended for short and sporadic services. Therefore, the UE only needs to acquire / reacquire position fixation by GNSS before establishing the connection to avoid interruptions during the connection. However, if, in rare cases, the position fixation by GNSS is still out of date while the UE is in RRC_CONNECTED, the UE will enter idle mode to reacquire position fixation by GNSS.

[0035] For further enhancements to IoT NTN, GNSS position fix reacquisition during long connections is required. It is expected that, for UEs in connected mode, when GNSS position fixation becomes invalid, the UE will be able to reacquire GNSS position fixation and then continue service transmission. However, for an IoT UE in connected mode, when the UE attempts to reacquire GNSS position fixation, the UE cannot simultaneously receive scheduling data from the radio network. In other words, if the radio network sends service data to the UE while the UE is acquiring GNSS position fixation, the UE will lose the service data.To avoid such a problem, the radio network should not schedule service data for the UE when the UE obtains position fixation via GNSS, which requires the radio network to be aware of when the UE begins to reacquire position fixation via GNSS, and also of the total time required for the UE to reacquire position fixation via GNSS.

[0036] The total time required for the UE to regain position fixation by GNSS can be referred to as the GNSS position fixation time duration, which is mainly determined by the GNSS initialization mode. For example, for initialization to Petition 870250091193, dated 06 / 10 / 2025, page 13 / 59 8 / 25 hot, the Position Time To First Fix (TTFF) by GNSS is 1s or 2s, for intermediate initialization, the TTFF time is several seconds, and for cold initialization, the TTFF time is 30s. Here there is an additional assumption that, after the UE successfully acquires the position fix by GNSS when connecting to the NW, the GNSS initialization mode may remain unchanged for the entire duration of the connection, for example, always in hot initialization mode or intermediate initialization mode. Therefore, the duration of the GNSS position fix time may also remain unchanged.

[0037] In the following section, we will discuss the solution to reduce the downtime caused by the reacquisition of position fixation by GNSS during connected mode.

[0038] In general, the UE in connected mode can adopt one of the following methods to perform GNSS reacquisition:

[0039] Option 1: The radio network can send a trigger when the The UE enters RRC connected mode or shortly thereafter. This trigger can be sent only once, primarily to allow the UE to perform GNSS measurements, but it does not mean that the UE needs to start GNSS measurements immediately upon receiving the trigger. Over time, only when the GNSS validity timer expires will the UE begin to reacquire position fixation via GNSS. This can be considered as a periodic reacquisition of position fixation by GNSS, for example, considering the duration of the GNSS validity as a periodicity.

[0040] Option 2: The UE performs GNSS reacquisition only after receiving an explicit trigger from the radio network. The radio network trigger can explicitly indicate the interval and start time of the GNSS measurement. The radio network implementation defines how con Petition 870250091193, dated 06 / 10 / 2025, page 14 / 59 9 / 25 figure the initial position and the duration of the measurement interval. For example, the measurement interval must be equal to or greater than the duration of the position fixation time by the GNSS. The measurement start time can be calculated based on some configured parameters and certain formulas (for example, after the subframe +X + km ac, where k is the subframe where the UE would transmit a HARQ-ACK to the NPDSCH trigger carrier).

[0041] Figure 2 highlights a brief comparison between Option 1 and Option 2. As illustrated in Figure 2, the upper graph shows events occurring along the horizontal (time) axis where a trigger is received from the NW (leftmost rectangle). The duration of the GNSS position hold time is shown by the width of the first rectangle, with additional data transmission occurrences as time increases from left to right. At some point after the initial trigger, the UE may reacquire the GNSS position hold. The time difference between two of these reacquisitions may be equal to the GNSS validity period.

[0042] As illustrated in the graph of Option 2 at the bottom of Figure 2, from left to right along the time axis, a trigger can be received from a network node based on a transmission performed by the network node. The x marks the event described above, where the UE can ignore the trigger and not perform the reacquisition of the position hold by the GNSS due to an ongoing data transmission / reception.

[0043] To reduce downtime caused by GNSS reacquisition of position hold during connected mode, there has been previous discussion about GNSS reacquisition of position hold during the idle state of the Connected XDR. The UE Connected Mode XDR (C-XDR) scheme specifies periodic repetition of the Activity Duration followed by a possible idle period. Petition 870250091193, dated 06 / 10 / 2025, page 15 / 59 10 / 25 (see Figure 3). Here, the inactive state of the Connected XDR corresponds to the opportunity for the XDR in Figure 3.

[0044] In previous discussions, there was a brief analysis that, according to the current C-DRX timer design, the maximum idle period duration in DL / UL is 32 Physical Downlink Control Channel (PDCCH) periods, and the maximum PDCCH periods are 64 times the duration required for the maximum number of repetitions. The corresponding DL / UL idle period can be as long as 1310s. During the idle state, the UE does not need to transmit and receive, including system information and paging. Therefore, it is feasible for the UE (especially for the UE in hot-start via GNSS) to autonomously perform GNSS reacquisition during the DRX-connected idle state without interruption in service data transmission. Furthermore, the UE is able to complete GNSS reacquisition before it ends the idle state and enters the next active DRX-connected state.

[0045] Several modalities are now described with reference to Figures 4A to 4C. In these figures, the horizontal axis represents the time over which various events (e.g., transmission / reception of triggers, data, etc.) are depicted. Several events, such as UE scheduling, UE PDCCH monitoring, and the GNSS reacquisition time window, are represented in the upper parts of the drawings.

[0046] 3. Modality 1 (early commencement of repurchase by GNSS and EU report the start of GNSS reacquisition)

[0047] In Option 1, based on knowledge of the GNSS validity period and the GNSS position hold time reported by the UE, the NW may have the same understanding as the UE of when the GNSS validity period timer will expiry. Petition 870250091193, dated 06 / 10 / 2025, page 16 / 59 11 / 25 pirar (for example, when the GNSS reacquisition will begin) and also how long the GNSS reacquisition will take, therefore it can interrupt the scheduling for the UE at the correct time period, for example, during each moment when the UE performs the GNSS reacquisition.

[0048] When the UE is configured with C-DRX, an ideal case is that the GNSS validity duration timer expiration is within the C-DRX idle state, and the idle state time is also long enough for the UE to complete the reacquisition of the position hold by the GNSS. In this case, there would be no service interruption. And there is no problem for the NW, since the NW can also be aware of such reacquisition by the GNSS and consider it normal. But it is easy to understand that, since the C-DRX is configured flexibly, this ideal situation would not always occur. More commonly, even if the GNSS validity duration timer expiration may be within the C-DRX idle state, the GNSS reacquisition of the UE may last until after the end of the idle state (as illustrated in Figure 3) or the GNSS validity duration timer expiration occurs even after the end of the idle state. In these cases, service interruption is still unavoidable.

[0049] In this Mode 1, instead of the UE starting to reacquire the position fix by GNSS when the GNSS validity duration timer expires (e.g., at time point T2), if the UE determines that it is possible to complete the reacquisition by GNSS during the idle state of the C-XRD, the UE may deliberately interrupt the GNSS validity duration timer and start the reacquisition of the position fix early (e.g., at T1, which is prior to T2) during the idle state of the C-XRD. This is shown in Figure 4A.

[0050] The EU can decide when to start reacquisition by GNSS, Petition 870250091193, dated 06 / 10 / 2025, page 17 / 59 12 / 25 provided that its completion is ensured before the end of the idle state of the C-XRD. However, in order for the GNSS that has undergone reacquisition to cover the longest possible period, it is better that the UE initiates reacquisition by the GNSS as late as possible. One possible way to define T1 is with reference to the time point of the end of the idle state, for example, T3 and the duration of the position fix time by the GNSS:

[0051] T1 = T3 - Duration of the position fix time by GNSS - Gdisplacement (1)

[0052] where Gdisplacement can be set by the UE or NW, with a zero value or a positive value and, the smaller this value, the better.

[0053] However, if the UE initiates GNSS position fix reacquisition prematurely, for example, before the GNSS validity timer expires to align with the inactive C-XRD state, the consistent understanding between the UE and NW regarding the start of each GNSS reacquisition would be disrupted. NW may not be aware of this occurrence and will still begin to interrupt scheduling for the UE at T1, which is completely unnecessary. To avoid this problem, the UE needs to report some kind of indication to inform NW about this premature or temporary GNSS reacquisition.

[0054] In this Implementation 1, before the UE begins performing GNSS position-fixing reacquisition, the UE must report this early start of GNSS reacquisition to the NW. Additionally, the UE can also report the exact expected starting point of GNSS reacquisition, e.g., T1, via RRC singleling, MAC CE, or L1 signaling, etc. It is also possible for the UE to use a specific or dedicated Physical Random Access Channel (PRACH) resource to indicate this early start of GNSS reacquisition to the NW. Based on the UE's report, the NW also Petition 870250091193, dated 06 / 10 / 2025, page 18 / 59 13 / 25 can interrupt your GNSS validity duration timer and restart it after the GNSS reacquires the position hold.

[0055] However, since during the idle state of the CDRX, the NW would not schedule DL or UL for the UE, it will be difficult for the UE to report to the NW shortly before its reacquisition by the GNSS. A possible alternative is for the UE to initiate a Physical Random Access Channel (PRACH) procedure in connected mode and transmit this report during the idle state of the CDRX; see arrow 401 in Figure 4A. If the UE initiates a PRACH in connected mode for this report, it may also include a new reason, explicitly or implicitly, to indicate the real purpose of this PRACH procedure. It is also possible for the UE to use a specific or dedicated PRACH resource to indicate this early start of GNSS reacquisition to the NW.

[0056] Another possible alternative would be that, if the UE can determine T1 in advance, it could inform the network about this expected early start of GNSS reacquisition and also the future start time, for example, T1, before the start of the CDRX idle state. This means that the UE can send this report during the active state of C-DRX, for example, along with other service transmissions, via RRC singleling, CE MAC or L1 signaling, etc. It is also possible for the UE to use a specific or dedicated PRACH resource to indicate this early start of GNSS reacquisition to the NW. See arrow 402 in Figure 4A. In this way, the UE and the NW can be aligned regarding the timing of the early GNSS reacquisition. Note that here, the UE only reports information related to the NW; the UE does not interrupt the GNSS validity duration timer and does not initiate GNSS reacquisition.

[0057] Since we are talking about an early reacquisition by GNSS, this means that the current GNSS is still valid. Even if there is an opportunity to use the inactive state of C-XDR, if the Petition 870250091193, dated 06 / 10 / 2025, page 19 / 59 If the current GNSS validity period (14 / 25) is still relatively long, there is no need to autonomously trigger GNSS acquisition too early. Therefore, to avoid unnecessary GNSS reacquisition, certain conditions can be set to control the UE to trigger GNSS reacquisition only when appropriate. One possible condition is that only when the remaining validity period of the UE's current GNSS is less than a configured limit, the UE can autonomously trigger GNSS reacquisition in the inactive C-XDR state. This limit can be configured by the UE or the NW.

[0058] 4. Modality 2 (early commencement of repurchase by GNSS and EU report end of GNSS reacquisition)

[0059] Consider that it may not be easy for the UE to report the early start of GNSS reacquisition and also the related start time in advance, for example, before the start of GNSS reacquisition, especially when the UE has already entered the inactive C-XRD state. In this Mode 2, another possible way is that the UE can report the early start of GNSS reacquisition after GNSS reacquisition has ended.

[0060] The EU can send this report as soon as the repurchase by GNSS is completed in order to inform NW as soon as possible. Since it is very possible that the idle state of the C-DRX has not been completed (for example, the UE is still in the idle state), the UE also needs to initiate a PRACH procedure in connected mode and transmit this report (see arrow 411 in Figure 4B).

[0061] Since we can assume that the interval between the end of the GNSS reacquisition and the end of the inactive state, for example, Gdisplacement, would be very short, the UE can also wait for this report and send it until the end of the inactive state. This means that the UE can send this report during the active status of the C-XDR, for example, in T4, Petition 870250091193, dated 06 / 10 / 2025, p. 20 / 59 15 / 25 along with other service transmissions, via RRC singleling, MAC CE or L1 signaling, etc. (see arrow 413 in Figure 4A).

[0062] In Figure 4B, since T4 is later than T2 (subcase 1), it would be the case that, when the NW receives the report from the UE, the GNSS validity duration timer on the NW side has already expired and the NW has interrupted the DL / UL scheduling for the UE for a while. Even so, it is still beneficial, since the NW can restart the GNSS validity duration timer as quickly as possible, without waiting for the entire GNSS position fix time.

[0063] It is also possible that, when the NW receives the report, the GNSS validity duration timer on the NW side has NOT yet expired, for example, T2 is later than T4 (subcase 2). In this case, upon receiving the report, the NW can immediately reset the GNSS validity duration timer and resume scheduling for the UE.

[0064] It doesn't matter in subcase 1 and subcase 2, since the Since the EU and the NW reset the GNSS validity duration timer at different points in time, the NW must apply a different time period to the GNSS validity duration timer on its own side, for example, the remaining time of the GNSS validity duration timer on the EU side.

[0065] In short, unlike Mode 1, since the If the EU has completed GNSS reacquisition when submitting the report, it may not be appropriate to include information that GNSS reacquisition is due to begin at some point, for example, T1. Instead, the EU may include one or more of the following in this report:

[0066] An indication that GNSS reacquisition has been performed. The exact starting point of T1 may also be included;

[0067] The point in time at which the EU completes the repurchase by Petition 870250091193, dated 06 / 10 / 2025, p. 21 / 59 16 / 25 GNSS, for example, Tfinal.

[0068] Due to the mobility of the UE, it is possible that the UE will determine that the validity period of the GNSS be changed at the end of the GNSS reacquisition. The UE then needs to report the new validity period of the GNSS to NW.

[0069] We assume that the UE would reset the GNSS validity timer as soon as it completes the reacquisition by the GNSS, for example, at Tfinal. However, as mentioned above, the times when the UE sends the report and when the NW receives it would be after Tfinal. To realign the GNSS validity timer on both the UE and NW sides, the UE also needs to include the remaining time of the current GNSS validity timer or the elapsed time.

[0070] 4. Modality 3 (early commencement of repurchase by GNSS without waiting for the explicit trigger from the NW)

[0071] In Option 2, the EU usually carries out the repurchase by GNSS only after receiving the explicit trigger from the radio network. In Mode 3, if Option 2 is applied, it can also be combined with the early start of GNSS reacquisition without the explicit trigger from the NW, as illustrated in Figure 4C.

[0072] Similar to what is mentioned in Mode 1 and Mode 2, if the UE determines that the remaining time of the current GNSS validity period is less than a configured limit (this limit can be configured by the UE or the NW), even if no explicit trigger is received by the UE, the UE can autonomously trigger GNSS reacquisition in the inactive C-DRX state.

[0073] In addition, to prevent NW from sending another explicit trigger during or shortly after the UE's last GNSS reacquisition, UE must also send a report to NW before it begins performing the GNSS reacquisition (e.g., via the PRACH procedure). Petition 870250091193, dated 06 / 10 / 2025, page 22 / 59 17 / 25 or after GNSS reacquisition is completed and / or the inactive state of C-XDR is finalized.

[0074] The following technical solutions can be preferably implemented by some preferred methods.

[0075] 1. A wireless communication method (for example, method 510 illustrated in Figure 5A) comprising: transmitting (512), by a wireless device to a network device, an indication that indicates that the wireless device is initiating a position reacquisition procedure at a first time that is prior to a second time in accordance with a rule for initiating the position reacquisition procedure.

[0076] 2. A wireless communication method (for example, method 610 illustrated in Figure 6A) comprising: receiving (612), by a network device from a wireless device, an indication that indicates that the wireless device is initiating a position reacquisition procedure at a first time that is prior to a second time according to a rule for initiating the position reacquisition procedure; and executing (614) a subsequent operation based on the indication.

[0077] 3. The method according to either of the solutions 1-2, wherein the first moment corresponds to an instant in time in a discontinuous receive mode operation in connected mode (C-DRX).

[0078] 4. The method according to either of solutions 1-3, wherein: the first moment is within an inactivity period of a discontinuous receive DRX cycle related to a wireless device DRX operation or the first moment is at the beginning of the inactivity period of the DRX cycle related to the wireless device DRX operation.

[0079] 5. The method according to any of the solutions 1-2, Petition 870250091193, dated 06 / 10 / 2025, p. 23 / 59 18 / 25 where the indication is transmitted (by the wireless device) or received (by the network device) while the wireless device is operating in a connected discontinuous receive mode (C-DRX).

[0080] 6. The method according to any of the solutions 1 to 5, where the indication is transmitted (by the wireless device) or received (by the network device) using a physical random access channel (PRACH).

[0081] 7. The method according to any of solutions 1-5, wherein the indication is transmitted (by the wireless device) or received (by the network device) as a medium access control message or a radio resource control message.

[0082] 8. The method according to any of solutions 5-7, wherein the indication is transmitted or received during an inactive period or an active time of an XDR cycle related to a wireless device XDR operation.

[0083] 9. The method according to any of the solutions 1-7, where the indication indicates the first moment.

[0084] 10. The method according to any of solutions 1 to 9, wherein the indication is transmitted if the wireless device determines that a validity period of information about the current position is below a limit.

[0085] 11. The method according to any of solutions 1 to 10, where the wireless device is operating on a non-terrestrial network.

[0086] 12. The method according to any of the solutions 1- 11, where the rule specifies that the second moment corresponds to: an expiration time of a validity duration timer of the global navigation satellite system (GNSS) or a start time of a measurement by the GNSS configured by the network device. Petition 870250091193, dated 06 / 10 / 2025, p. 24 / 59 19 / 25

[0087] In some embodiments, solutions 4 or 8 may comprise an XDR cycle that is either a current XDR cycle or a next XDR cycle related to the wireless device's XDR operation.

[0088] Additional features of the above solutions are described in Section 3 of this document.

[0089] 13. A wireless communication method (for example, method 520 illustrated in Figure 5B) comprising: transmitting (522), by a wireless device to a network device, an indication that indicates that the wireless device has completed a position reacquisition procedure initiated at a first time that is prior to a second time in accordance with a rule for initiating the position reacquisition procedure.

[0090] 14. A wireless communication method (for example, method 620 illustrated in Figure 6B) comprising: receiving, by a network device from a wireless device, an indication that the wireless device has completed a position reacquisition procedure initiated at a first time that is prior to a second time in accordance with a rule for initiating the position reacquisition procedure; and performing (624) a subsequent operation based on the indication.

[0091] 15. The method according to any of the solutions 13- 14, where the first moment corresponds to an instant in time during a discontinuous connected-mode reception operation (C-DRX).

[0092] 16. The method according to any of the solutions 13- 15, wherein: the first moment is within an inactivity period of a discontinuous receive DRX cycle related to a wireless device DRX operation or the first moment is at the beginning of the inactivity period of the DRX cycle related to the wireless device DRX operation. Petition 870250091193, dated 06 / 10 / 2025, p. 25 / 59 20 / 25

[0093] 17. The method according to any of the solutions 13- 14, where the indication is transmitted (by the wireless device) or received (by the network device) while the wireless device is operating in a connected discontinuous receive mode (C-DRX).

[0094] 18. The method according to any of the solutions 13- 17, where the indication is transmitted (by the wireless device) or received (by the network device) using a physical random access channel (PRACH).

[0095] 19. The method according to any of the solutions 13- 17, where the indication is transmitted (by the wireless device) or received (by the network device) as a medium access control message or a radio resource control message.

[0096] 20. The method according to any of the solutions 17- 19, where the indication is transmitted (by the wireless device) or received (by the network device) during an inactive period or an active time of an XDR cycle related to an XDR operation of the wireless device.

[0097] 21. The method according to any of the solutions 13- 20, where the indication shows a final time at which the position repurchase procedure was completed.

[0098] 22. The method according to any of the solutions 13- 21, where the indication suggests a new validity period for acquired position fixation information.

[0099] 23. The method according to any of the solutions 13- 21, where the indication shows the remaining time of a current position hold acquisition timer.

[0100] Additional features of the above solutions are described in Section 4 of this document.

[0101] 24. A wireless communication method (for example, method 530 illustrated in Figure 5C) comprising: transmitting (532), by Petition 870250091193, dated 06 / 10 / 2025, page 26 / 59 21 / 25 a wireless device to a network device, an indication that shows that the wireless device is initiating a position reacquisition procedure initially because the wireless device determines that the remaining validity time of a position fix information is less than a limit.

[0102] 25. A wireless communication method (for example, method 630 illustrated in Figure 6C) comprising: receiving (632), by a network device from a wireless device, an indication that indicates that the wireless device is initiating a position reacquisition procedure at first because the wireless device determines that the remaining validity time of a position fix information is less than a limit; and performing (634) a subsequent operation based on the indication.

[0103] 26. The method according to any of the solutions 24- 25, where the limit is determined by the wireless device. [01 04] 27. The method according to any of the solutions 24- 25, where the limit is received from the network device. [01 05] 28. The method according to any of the solutions 24- 27, where the wireless device transmits the indication while the wireless device is within an inactivity period of a discontinuous receive DRX cycle related to a DRX operation of the wireless device.

[0106] Additional features of the above solutions are described in Section 5 of this document.

[0107] 29. A wireless communication device comprising a processor configured to implement a method described in any of the solutions mentioned above.

[0108] 30. A computer-readable medium containing code stored within it; when executed, the code causes a processor to implement a method as defined in any of the Petition 870250091193, dated 06 / 10 / 2025, page 27 / 59 22 / 25 of the solutions above.

[0109] In the solutions, the subsequent operation performed by the network device may include, for example, downlink communication with the wireless device in accordance with the DRX operation, setting a timer, a control transmission or a data transmission and so on.

[0110] Figure 7 shows an example of a wireless communication system (e.g., a Long Term Evolution (LTE), 5G, or NR cellular network) that includes a BS 120 and one or more user equipment (UE) devices 111, 112, and 113. In some embodiments, the uplink transmissions (131, 132, 133) may include uplink control information (UCI), upper-layer signaling (e.g., UE assistance or UE capacity information), or uplink information. In some embodiments, the downlink transmissions (141, 142, 143) may include DCI or upper-layer signaling or downlink information. The UE may be, for example, a smartphone, a tablet, a mobile computer, a machine-to-machine (M2M) device, a terminal, a mobile device, an Internet of Things (IoT) device, and so on.

[0111] Figure 8 is a block diagram representation of a part of an apparatus according to some embodiments of the technology presently described. An apparatus 205, such as a network device, a base station or a wireless (or UE) device, may include processor electronic components 210, such as a microprocessor implementing one or more of the techniques presented in this document. The apparatus 205 may include transceiver electronic components 215 for sending and / or receiving wireless signals through one or more communication interfaces, such as the(s) Petition 870250091193, dated 06 / 10 / 2025, page 28 / 59 23 / 25 antenna(s) 220. The device 205 may include other communication interfaces for data transmission and reception. The device 205 may include one or more memories (not explicitly shown) configured to store information, such as data and / or instructions. In some implementations, the electronic components of the processor 210 may include at least a portion of the electronic components of the transceiver 215. In some embodiments, at least some of the techniques, modules, or functions described are implemented using the device 205.

[0112] It will be acknowledged that the present document describes various techniques that can be implemented through modalities of a network device (e.g., a base station) or a wireless device (e.g., a UE), so that the reacquisition of position data can be performed with C-DRX in a manner that is compatible with C-DRX operation and, at the same time, allows the UE to perform the reacquisition of position information in a convenient and efficient manner.

[0113] Some of the embodiments described in this document are described in the general context of methods or processes that can be implemented, in one embodiment, by a computer program product, embodied in a computer-readable medium that includes computer-executable instructions, such as program code, executed by computers in network environments. A computer-readable medium may include removable and non-removable storage devices including, but not limited to, Read Only Memory (ROM), Random Access Memory (RAM), compact discs (CDs), digital versatile discs (DVDs), etc. Therefore, a computer-readable medium may include a Petition 870250091193, dated 06 / 10 / 2025, page 29 / 59 24 / 25 non-transient storage medium. In general, program modules may include routines, programs, objects, components, data structures, etc., that perform specific tasks or implement specific abstract data types. Computer or processor executable instructions, associated data structures, and program modules represent examples of program code to execute steps of the methods described in this document. The specific sequence of such executable instructions or associated data structures represents examples of corresponding acts to implement the functions described in such steps or processes.

[0114] Some of the embodiments described may be implemented as devices or modules using hardware circuits, software, or combinations thereof. For example, a hardware circuit implementation may include distinct analog and / or digital components that are, for example, integrated as part of a printed circuit board. Alternatively, or in addition, the components or modules described may be implemented as an Application Specific Integrated Circuit (ASIC) and / or as a Field Programmable Gate Array (FPGA) device. Some implementations may additionally or alternatively include a Digital Signal Processor (DSP), which is a specialized microprocessor with an architecture optimized for the operational needs of digital signal processing associated with the functionalities described in this application.Similarly, the various components or subcomponents within each module can be implemented in software, hardware, or firmware. Connectivity between modules and / or components within modules can be provided using any of the connectivity methods and means known in the art, including, but not limited to, communications. Petition 870250091193, dated 06 / 10 / 2025, page 30 / 59 25 / 25 via the Internet, wired or wireless networks using appropriate protocols.

[0115] Although the present document contains many specifications, these should not be interpreted as limitations to the scope of a claimed invention or of what may be claimed, but rather as descriptions of specific features of particular embodiments. Certain features described in the present document in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, several features described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable subcombination.Furthermore, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features of a claimed combination may, in some cases, be excluded from the combination, and the claimed combination may be directed to a subcombination or a variation of a subcombination. Similarly, although operations are represented in the drawings in a specific order, this should not be understood as a requirement that such operations be performed in the specific order shown or in sequential order, or that all illustrated operations be performed, to achieve the desired results.

[0116] Only a few implementations and examples are described, and other implementations, improvements, and variations may be made based on what is described and illustrated in this document. Petition 870250091193, dated 06 / 10 / 2025, page 31 / 59

Claims

1 / 2 CLAIMS 1. Wireless communication method, characterized in that it comprises: transmitting, by a wireless device to a network device, an indication that shows that the wireless device has completed a position reacquisition procedure initiated at a first time that is prior to a second time in accordance with a rule for initiating the position reacquisition procedure.

2. Wireless communication method, characterized in that it comprises: receiving, by a network device from a wireless device, an indication that the wireless device has completed a position reacquisition procedure initiated at a first time that precedes a second time according to a rule for initiating the position reacquisition procedure; and executing a subsequent operation based on the indication.

3. A method, according to any one of claims 1 to 2, characterized in that the first moment corresponds to an instant in time during a discontinuous connected-mode (C-DRX) reception operation.

4. Method, according to any one of claims 1 to 3, characterized in that: the first moment is within an inactivity period of a discontinuous DRX reception cycle related to a DRX operation of the wireless device.

5. A method, according to any one of claims 1 to 4, characterized in that the indication is transmitted or received using a physical random access channel (PRACH).

6. Method, according to any of the claims Petition 870250091193, dated 06 / 10 / 2025, page 40 / 59 2 / 2 1 to 4, characterized in that the indication is transmitted or received as a medium access control message.

7. A method, according to any one of claims 1 to 6, characterized in that the indication shows a remaining time of validity period of the global navigation satellite system (GNSS).

8. Wireless communication device, characterized in that it comprises electronic processor components configured to cause the device to implement a method as defined in any one of claims 1 to 7.

9. A computer-readable medium, characterized in that it contains code stored therein, the code, upon execution, causing a processor to implement a method as defined in any of claims 1 to 7. Petition 870250091193, dated 06 / 10 / 2025, pp. 41 / 59

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