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WO2025200559A1 - Adaptation de ressources de prach - Google Patents

Adaptation de ressources de prach

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Publication number
WO2025200559A1
WO2025200559A1 PCT/CN2024/136903 CN2024136903W WO2025200559A1 WO 2025200559 A1 WO2025200559 A1 WO 2025200559A1 CN 2024136903 W CN2024136903 W CN 2024136903W WO 2025200559 A1 WO2025200559 A1 WO 2025200559A1
Authority
WO
WIPO (PCT)
Prior art keywords
time window
paging
pei
dci
processor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/136903
Other languages
English (en)
Inventor
Yuantao Zhang
Ruixiang MA
Hongmei Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lenovo Beijing Ltd
Original Assignee
Lenovo Beijing Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lenovo Beijing Ltd filed Critical Lenovo Beijing Ltd
Priority to PCT/CN2024/136903 priority Critical patent/WO2025200559A1/fr
Publication of WO2025200559A1 publication Critical patent/WO2025200559A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H04W68/025—Indirect paging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal

Definitions

  • the at least one first time window and the at least one second time window are consecutive or partially overlapped.
  • the PEI is transmitted to the UE, and the at least one time window is determined based on the PEI.
  • the at least one time window comprises one time window starting from one paging frame associated with the PEI.
  • the time window is extended to start from an occasion of a PEI associated with the reference paging frame.
  • the time window duration is no shorter than the paging cycle.
  • the time window duration is a positive integer number of times of the paging cycle.
  • the PEI is a first PEI
  • the at least one time window is at least one first time window.
  • Some implementations of the method and apparatuses described herein may further include: transmitting, to the UE in the at least one first time window, a second PEI comprising an indication of availability of PRACH resources, wherein the second PEI is associated with at least one second time window subsequent to the at least one first time window.
  • the PEI is a first PEI, and the at least one time window is at least one first time window.
  • Some implementations of the method and apparatuses described herein may further include: transmitting, to the UE, a second PEI comprising an indication of availability of PRACH resources.
  • the second PEI is associated with at least one second time window subsequent to the at least one first time window.
  • the first PEI further comprises an indication of availability of PRACH resources in the at least one second time window.
  • the at least one first time window and the at least one second time window are consecutive or partially overlapped.
  • Some implementations of the method and apparatuses described herein may further include: performing a synchronization signal and physical broadcast channel (PBCH) block (SSB) to random access channel (RACH) occasion (RO) association in the at least one time window.
  • PBCH physical broadcast channel
  • RACH random access channel
  • a SSB to RO mapping unit with all ROs located within the at least one time window is valid.
  • a time window duration of the at least one time window is infinite or is longer than a threshold.
  • Some implementations of the method and apparatuses described herein may further include: transmitting, to the UE, a configuration associated with an adaptation on the at least one time window.
  • the unavailable PRACH resources start from a first SSB to RO association pattern period after the transmitted indication.
  • FIG. 1A illustrates an example of a wireless communications system that supports PRACH resource adaptation in accordance with aspects of the present disclosure.
  • FIG. 1B illustrates an example diagram of a relationship among the PRACH configuration periods, SSB to RO mapping cycles, SSB to RO association periods and SSB to RO association pattern periods.
  • FIG. 2 illustrates an example signaling chart of a communication process that supports PRACH resource adaptation in accordance with some example embodiments of the present disclosure.
  • FIGs. 3A through 4C illustrate example diagrams of time windows for PRACH resources triggered by the PEIs or paging DCIs in accordance with some example embodiments of the present disclosure.
  • Split of functionality between a CU, a DU, and an RU may be flexible and may support different functionalities depending upon which functions (e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combinations thereof) are performed at a CU, a DU, or an RU.
  • functions e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combinations thereof
  • a functional split of a protocol stack may be employed between a CU and a DU such that the CU may support one or more layers of the protocol stack and the DU may support one or more different layers of the protocol stack.
  • control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc. ) for the one or more UEs 104 served by the one or more network entities 102 associated with the core network 106.
  • NAS non-access stratum
  • One or more numerologies may be supported in the wireless communications system 100, and a numerology may include a subcarrier spacing and a cyclic prefix.
  • a first subcarrier spacing e.g., 15 kHz
  • a normal cyclic prefix e.g. 15 kHz
  • the first numerology associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one slot per subframe.
  • Msg1 is transmitted in PRACH resources.
  • PRACH resources are configured in SIB1 and contains RACH occasions (ROs) .
  • ROs RACH occasions
  • Each RO occupies multiple consecutive resource blocks in frequency domain and a set of OFDM symbols in time domain.
  • ROs are associated with SSBs.
  • the UE may firstly measure the SSBs and find the one with best channel quality. Then based on the association, the UE will select the corresponding RO to transmit Msg1, so that Msg1 can be transmitted more robustly.
  • An association pattern period includes one or more association periods and is determined so that a pattern between ROs and SSB indexes repeats at most every 160 msec. ROs not associated with SSB indexes after an integer number of association periods, if any, are not used for PRACH transmissions.
  • FIG. 1B illustrates an example diagram of a relationship among the PRACH configuration periods, SSB to RO mapping cycles, SSB to RO association periods and SSB to RO association pattern periods.
  • one SSB to RO association pattern period contains two SSB to RO association periods
  • one SSB to RO association period contains two PRACH configuration periods, in which one SSB to RO mapping cycle is formulated.
  • PEI DCI is associated with POs of up to two PFs and is used to indicate the UE whether there is paging (paging message and/or short message) scheduled in the associated POs. Based on the indication, the UE then determines whether to detect the paging DCI in the PO.
  • SIB1 DCI is used to schedule the transmission of SIB1 PDSCH. From UE point of view, the UE needs to monitor SIB1 DCI periodically, e.g., in every other radio frame in one configuration.
  • the additional PRACH resources once triggered, can be assumed to be valid in a time window.
  • the duration of the time window can be configured in SIB1 while UE needs to determine the starting position of the time window.
  • the time window should be aligned as much as possible for UEs (i.e., in contrast to flexible starting of the time window) , such that from BS point of view, it can receive Msg1 in the aligned time window and after that, it can go to sleep mode for energy saving.
  • Enhancements are needed regarding how to determine the (aligned) time window for the triggered additional PRACH resources. Besides, within the time window, the UE needs to determine available ROs and perform SSB to RO association. Lastly, since a paging DCI has limited available bits, the paging DCI can indicate the triggering of PRACH resource adaptation, but is hard to support finer resource adaptation, including e.g., dynamically indicating the disabling of some of the additional resources. Enhancements are needed regarding how to support finer resource adaptation.
  • Embodiments of the present disclosure provide a solution for PRACH resource adaptation.
  • at least one time window for the PRACH resources may be determined based on the PEI or the paging DCI.
  • the at least one time window starts from at least one paging frame associated with the PEI.
  • the at least one time window starts from a paging frame associated with a paging occasion at which the paging DCI is received.
  • the at least one time window starts from a reference paging frame determined based on a time window duration of the at least one time window. In this way, the starting position of the time window is aligned for the PEI triggered PRACH resources and paging DCI triggered PRACH resources. This is beneficial in terms of network energy saving.
  • FIG. 2 illustrates an example signaling chart of a communication process that supports PRACH resource adaptation in accordance with some example embodiments of the present disclosure.
  • the process 200 will be described with reference to FIG. 1A.
  • the process 200 may involve the UE 104 and the network entity 102. It is to be understood that the steps and the order of the steps in FIG. 2 are merely for illustration, and not for limitation. It is to be understood that process 200 may further include additional blocks not shown and/or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
  • the PEI is transmitted to the UE 104, and the at least one time window may be determined based on the PEI. For example, if the UE 104 supports the PEI scheme, the network entity 102 may transmit the PEI to the UE 104 in order to indicate the availability of PRACH resources, and the time window (s) for the PRACH resources may be determined based on the PEI.
  • no PEI is transmitted to the UE 104, and the at least one time window may be determined based on the paging DCI.
  • the network entity 102 may transmit the paging DCI to the UE 104 in order to indicate the availability of PRACH resources, and the time window (s) for the PRACH resources may be determined based on the paging DCI.
  • the duration of the time windows may be configured in SIB1.
  • the PEI triggered time window for PRACH resources and the paging DCI triggered time window for PRACH resources may be aligned.
  • the time window may be extended to start from an occasion or a radio frame at which the PEI is received and ended in a position aligned with the time window determined from paging DCI, i.e., the size of time window determined from a PEI DCI may be equal to the frame offset of PEI relative to the associated PF plus the configured time window duration.
  • an additional time window from the PEI transmission to the paging frame associated with the PEI may be available for PRACH resources for UEs supporting the PEI scheme. This may be beneficial for improving resource efficiency especially in terms of SSB to RO associations without essentially increasing the network power consumption.
  • the time window starts from the beginning of the PEI-associated PF.
  • the time window for the triggered PRACH resources starts from beginning of the PO-associated PF.
  • the starting of the time window for PEI triggered resource is aligned with that for paging DCI triggered resource, where the paging DCI is transmitted in the PEI associated PO.
  • the duration of both time windows follows the one configured in SIB1, so the time duration is also aligned.
  • UEs in the system may or may not support PEI. If a UE supports PEI and PEI is transmitted by the base station, the UE may detect PEI before the target PF. And if the PEI indicates the triggering of PRACH resources, the UE determines that the time window for the additional PRACH resource starts from the PEI associated PF. The UE can then transmit RACH Msg1 in the determined time window (if the UE needs to access the network) . Furthermore, in some implementations, if the PEI indicates the UE to detect a paging DCI in the associated PO, the UE will further detect paging DCI following the indication in the PEI. It is assumed that paging DCI indicated by the PEI also carry the indication to trigger the PRACH resources.
  • the UE will simply follow the indication in the PEI to trigger the additional PRACH resources. If the UE does not support PEI, the UE detects paging DCI directly and get the triggered PRACH resources. Thus, UEs, no matter supporting PEI or not, will determine an aligned time window for the triggered PRACH resources.
  • FIG. 3A illustrates an example diagram of time windows for PRACH resources triggered by the PEIs or paging DCIs in accordance with some example embodiments of the present disclosure.
  • a PEI 301 is associated with one PF 304, and one PF 304 is associated with two POs 302 and 303.
  • one PEI is associated with two POs.
  • a paging cycle contains two PFs, but from the UE point of view, the UE monitors only one PO of one PF in each paging cycle.
  • the time window starts from the PEI associated PF 304.
  • For paging DCI triggered PRACH resources the time window starts from the PO associated PF 304.
  • the time windows for PRACH resources triggered by a PEI and PRACH resources triggered by a paging DCI are then aligned, as shown in the FIG. 3A.
  • the duration 305 of the time window is configured as 1/2 paging cycle in the example in FIG. 3A, it can be configured as other values, e.g., less than 1/2 paging cycle or larger than 1/2 paging cycle.
  • the time duration from the PEI 301 to the PF 304 may also be available for PEI triggered PRACH resources.
  • the at least one time window may include a first time window starting from a first paging frame associated with the PEI and a second time window starting from a second paging frame associated with the PEI.
  • the PEI may be associated with two paging frames, and each paging frame may be associated with at least one paging occasion for paging DCI.
  • the UEs supporting the PEI scheme may determine two time windows for PRACH resources starting from the two paging frames associated with the PEI, respectively.
  • the UEs not supporting the PEI scheme may determine one time window for PRACH resources starting from the paging frame associated with the PO at which the paging DCI is received.
  • the starting of the paging DCI triggered time window for PRACH resources may be aligned with the starting of one of the two PEI triggered time windows for PRACH resources.
  • the duration of the time windows may be configured in SIB1.
  • the PEI triggered time window for PRACH resources and the paging DCI triggered time window for PRACH resources may be aligned.
  • the first paging frame is before the second paging frame, and the first time window may be extended to start from an occasion at which the PEI is received.
  • an additional time window from the PEI transmission to the first paging frame associated with the PEI may be available for PRACH resources for UEs supporting the PEI scheme. This may be beneficial for improving resource efficiency especially in terms of SSB to RO associations without essentially increasing the network power consumption.
  • the time window may contain two segments (which may or may not be time consecutive) .
  • the first segment starts from the first PEI-associated PF and has a time duration as configured in SIB1.
  • the second segment starts from the second PEI-associated PF and has a time duration as configured in SIB1.
  • the time window for the triggered PRACH resources starts from the beginning of the PO-associated PF and has a time duration as configured in SIB1. This ensures that the starting and duration of one segment for PEI triggered PRACH resources is aligned with the time window of resources triggered by the paging DCI received in a PO associated with the PEI.
  • UEs in the system may or may not support PEI. If a UE supports PEI, the UE will detect PEI before the target PF. And if the PEI indicates the triggering of PRACH resources, the UE determines two time-segments for the additional PRACH resources. The UE can then transmit RACH Msg1 in the determined time segments (if the UE needs to access the network) . Furthermore, in some implementations, if the PEI indicates the UE to detect a paging DCI in the associated PO, the UE will further detect paging DCI following the indication in the PEI. It is assumed that paging DCI indicated by the PEI also carry the indication to trigger the PRACH resources.
  • the UE will simply follow the indication in the PEI to trigger the additional PRACH resources. If the UE does not support PEI, the UE detects a paging DCI directly and can determine the time window for the triggered PRACH resources. Thus, UEs, if supporting PEI, can determine a duration covering that determined by UEs not supporting PEI. If the duration of the time windows/segments configured in SIB1 is no larger than 1/2 paging cycle, the UEs, if supporting PEI, can determine a sum duration which is two times of that determined by UEs not supporting PEI. If the duration of the time windows/segments configured in SIB1 is no less than 1/2 paging cycle, the UEs, if supporting PEI, can determine a consecutive duration covering that determined by UEs not supporting PEI.
  • FIG. 3B illustrates an example diagram of time windows for PRACH resources triggered by the PEIs or paging DCIs in accordance with some example embodiments of the present disclosure.
  • a PEI 311 is associated with a first PF 314 and a second PF 317.
  • the PF 314 is associated with two POs 312 and 313.
  • the PF 317 is associated with two POs 315 and 316.
  • a paging cycle contains two PFs, but from the UE point of view, the UE monitors only one PO of one PF in each paging cycle.
  • the time window includes a first segment starting from the first PF 314 associated with the PEI 311 and a second segment starting from the second PF 317 associated with the PEI 311.
  • the time window starts from the PO associated PF 314.
  • the time window starts from the PO associated PF 317.
  • the time window for PRACH resources triggered by a paging DCI (transmitted in the PEI associated PO) is then aligned with a segment of time window for PRACH resources triggered by the PEI, as shown in the FIG. 3B.
  • the duration 305 of the time window is configured to be less than 1/2 paging cycle in the example in FIG. 3B, it can be configured as other values, e.g., equal to 1/2 paging cycle or larger than 1/2 paging cycle.
  • the time duration from the PEI 301 to the PF 304 may also be available for PEI triggered PRACH resources.
  • PEI triggered PRACH resources may start from the PEI-associated PF while paging DCI triggered PRACH resources may start from the PO-associated PF.
  • the time window starts from the beginning of the PEI-associated PF.
  • the time window contains a first segment or both of two segments (which may or may not be time consecutive) , where the first segment starts from the first PEI-associated PF, and the second segment starts from the second PEI-associated PF.
  • a UE detects either a paging DCI or a PEI, indicating the triggering of the PRACH resources, the UE determines that the time window starts from a reference PF, which is the nearest one before the PO at which the paging DCI is received or before the PF (s) associated with the PEI.
  • a UE detects either a paging DCI or a PEI, indicating the triggering of the PRACH resources, the UE determines that the time window starts from a reference PF, which is the nearest one before the PO at which the paging DCI is received or before the PEI.
  • the PEI is a first PEI
  • the at least one time window is at least one first time window.
  • the UE 104 may receive, from the network entity 102 in the at least one first time window, a second PEI comprising an indication of availability of PRACH resources.
  • the second PEI may be associated with at least one second time window subsequent to the at least one first time window.
  • the UE may receive an indication triggering a subsequent time window for PRACH resources before the previous time window ends.
  • the time window may contain more than one PEIs
  • the PEIs in the time window may trigger same or different time windows for PRACH resources.
  • FIG. 4C illustrates an example diagram of time windows for PRACH resources triggered by the PEIs or paging DCIs in accordance with some example embodiments of the present disclosure.
  • the UE 104 may determine at least one time window for PRACH resources and at least one second time window for PRACH resources.
  • the UE 104 may perform a SSB to RO association in the at least one first time window and the at least one second time window.
  • a SSB to RO mapping unit with all ROs located within at least one of the at least one first time window or the at least one first time window is valid.
  • the SSB to RO mapping unit may be a SSB to RO association pattern period.
  • the SSB to RO mapping unit may be a SSB to RO association periods the SSB to RO mapping unit may be a SSB to RO mapping cycle.
  • FIG. 5B illustrates an example diagram of SSB to RO associations in two consecutive time windows for PRACH resources triggered by the PEIs or paging DCIs in accordance with some example embodiments of the present disclosure.
  • SSB to RO mapping units which are association pattern periods in the example in FIG 5B
  • Those SSB to RO mapping units at least partially located outside the two consecutive time windows for PRACH resources are invalid and thus are unavailable for Msg1 transmission.
  • a scheme for SSB to RO mapping within the determined subsequent time windows is designed. Before the end of a time window for the triggered PRACH resources, if the UE is indicated with another time window (e.g., indicated by PEI) that follows the previous one in a time consecutive manner, SSB to RO association can be performed continuously in these time windows.
  • another time window e.g., indicated by PEI
  • the UE 104 may receive, from the network entity 102, an indication of unavailable PRACH resources in the at least one time window.
  • the indication is carried in a system information block 1 (SIB1) DCI or a PEI.
  • SIB1 system information block 1
  • the UE 104 may determine the unavailable PRACH resources in the at least one time window based on the received indication. For example, based on load status, the network entity 102 may indicate whether a subset of the additional PRACH resources are available or not.
  • the UE 104 may receive a paging DCI or PEI, indicating the triggering of the additional PRACH resource, which are available in a time window.
  • the UE 104 may monitor SIB1 DCI or PEI within the time window, to get the subset of unavailable (or truly available) PRACH resources.
  • a time window duration of the at least one time window is infinite or is longer than a threshold. For example, if paging DCI or PEI triggers a long time PRACH resources (e.g., infinity or containing more than K paging cycles, where K is configurable) , then the UE 104 may monitor SIB1 DCI or PEI to get the subset of unavailable PRACH resources. As used herein, the unavailable PRACH resources may be referred to as “muted PRACH resources” .
  • the UE 104 may receive, from the network entity 102, a configuration associated with an adaptation on the at least one time window.
  • a configuration associated with an adaptation on the at least one time window there is may be a specific configuration/indication included in SIB1, which indicates whether the UE needs to monitor SIB1 DCI or PEI for further PRACH adaptation (e.g., to get the subset of unavailable PRACH resources) within the time window for the PRACH resources triggered by paging DCI or PEI.
  • the unavailable PRACH resources start from a first SSB to RO association pattern period after the received indication.
  • the muted PRACH resources start from the first SSB to RO association pattern period after the SIB1 DCI, until an SSB to RO association pattern period indicated in the SIB1 DCI.
  • a scheme for two-stage DCI based PRACH resource adaptation is proposed.
  • the UE receives a paging DCI or PEI, indicating the triggering of the additional PRACH resource, which are available in a time window. Then based on certain conditions or a configuration, the UE may monitor a SIB1 DCI or another PEI within the time window, to get the subset of unavailable (or truly available) PRACH resources.
  • FIG. 6 illustrates an example of a device 600 that supports PRACH resource adaptation in accordance with aspects of the present disclosure.
  • the device 600 may be an example of a network entity 102 or a UE 104 as described herein.
  • the device 600 may support wireless communication with one or more network entities 102, UEs 104, or any combination thereof.
  • the device 600 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 602, a memory 604, a transceiver 606, and, optionally, an I/O controller 608. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
  • interfaces e.g., buses
  • the processor 602, the memory 604, the transceiver 606, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein.
  • the processor 602, the memory 604, the transceiver 606, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
  • the processor 602, the memory 604, the transceiver 606, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) .
  • the hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
  • the processor 602 and the memory 604 coupled with the processor 602 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 602, instructions stored in the memory 604) .
  • the processor 602 may support wireless communication at the device 600 in accordance with examples as disclosed herein.
  • the processor 602 may be configured to operable to support a means for receiving, from a network entity, at least one of a paging early indication (PEI) or paging downlink control information (DCI) comprising an indication of availability of physical random access channel (PRACH) resources; and a means for determining at least one time window for the PRACH resources based on the PEI or the paging DCI, wherein the at least one time window starts from one of the following: at least one paging frame associated with the PEI, a paging frame associated with a paging occasion at which the paging DCI is received, or a reference paging frame determined based on a time window duration of the at least one time window.
  • PEI paging early indication
  • DCI paging downlink control information
  • PRACH physical random access channel
  • the processor 602 may support wireless communication at the device 600 in accordance with examples as disclosed herein.
  • the processor 602 may be configured to operable to support a means for transmitting, to a user equipment (UE) , at least one of a paging early indication (PEI) or paging downlink control information (DCI) comprising an indication of availability of physical random access channel (PRACH) resources; and a means for determining at least one time window for the PRACH resources based on the PEI or the paging DCI, wherein the at least one time window starts from one of the following: at least one paging frame associated with the PEI, a paging frame associated with a paging occasion at which the paging DCI is received, or a reference paging frame determined based on a time window duration of the at least one time window.
  • PEI paging early indication
  • DCI paging downlink control information
  • PRACH physical random access channel
  • the processor 602 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • the processor 602 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 602.
  • the processor 602 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 604) to cause the device 600 to perform various functions of the present disclosure such that the device 600 may perform any process of the disclosure as discussed with reference to FIGS. 2 to 7.
  • the memory 604 may include random access memory (RAM) and read-only memory (ROM) .
  • the memory 604 may store computer-readable, computer-executable code including instructions that, when executed by the processor 602 cause the device 600 to perform various functions described herein.
  • the code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the code may not be directly executable by the processor 602 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the memory 604 may include, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic I/O system
  • the I/O controller 608 may manage input and output signals for the device 600.
  • the I/O controller 608 may also manage peripherals not integrated into the device M02.
  • the I/O controller 608 may represent a physical connection or port to an external peripheral.
  • the I/O controller 608 may utilize an operating system such as or another known operating system.
  • the I/O controller 608 may be implemented as part of a processor, such as the processor 606.
  • a user may interact with the device 600 via the I/O controller 608 or via hardware components controlled by the I/O controller 608.
  • the device 600 may include a single antenna 610. However, in some other implementations, the device 600 may have more than one antenna 610 (i.e., multiple antennas) , including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the transceiver 606 may communicate bi-directionally, via the one or more antennas 610, wired, or wireless links as described herein.
  • the transceiver 606 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 606 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 610 for transmission, and to demodulate packets received from the one or more antennas 610.
  • the transceiver 606 may include one or more transmit chains, one or more receive chains, or a combination thereof.
  • the memory 704 may include one or more caches (e.g., memory local to or included in the processor 700 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementation, the memory 704 may reside within or on a processor chipset (e.g., local to the processor 700) . In some other implementations, the memory 704 may reside external to the processor chipset (e.g., remote to the processor 700) .
  • caches e.g., memory local to or included in the processor 700 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc.
  • the memory 704 may reside within or on a processor chipset (e.g., local to the processor 700) . In some other implementations, the memory 704 may reside external to the processor chipset (e.g., remote to the processor 700) .
  • an article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements.
  • the terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Divers aspects de la présente divulgation concernent l'adaptation de ressources de PRACH. Selon un aspect, un UE reçoit, en provenance d'une entité de réseau, une indication précoce de radiomessagerie (PEI) et/ou des informations de commande de liaison descendante (DCI) de radiomessagerie comprenant une indication de disponibilité de ressources de canal physique à accès aléatoire (PRACH). L'UE détermine au moins une fenêtre temporelle pour les ressources de PRACH sur la base de la PEI ou des DCI de radiomessagerie. La ou les fenêtres temporelles commencent à partir de l'un des éléments suivants : au moins une trame de radiomessagerie associée à la PEI, une trame de radiomessagerie associée à une occasion de radiomessagerie à laquelle les DCI de radiomessagerie sont reçues, ou une trame de radiomessagerie de référence déterminée sur la base d'une durée de fenêtre temporelle de la ou des fenêtres temporelles.
PCT/CN2024/136903 2024-12-04 2024-12-04 Adaptation de ressources de prach Pending WO2025200559A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/136903 WO2025200559A1 (fr) 2024-12-04 2024-12-04 Adaptation de ressources de prach

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/136903 WO2025200559A1 (fr) 2024-12-04 2024-12-04 Adaptation de ressources de prach

Publications (1)

Publication Number Publication Date
WO2025200559A1 true WO2025200559A1 (fr) 2025-10-02

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Family Applications (1)

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PCT/CN2024/136903 Pending WO2025200559A1 (fr) 2024-12-04 2024-12-04 Adaptation de ressources de prach

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Country Link
WO (1) WO2025200559A1 (fr)

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