WO2025123731A1 - Détermination de ressources de wus - Google Patents

Détermination de ressources de wus Download PDF

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Publication number
WO2025123731A1
WO2025123731A1 PCT/CN2024/111133 CN2024111133W WO2025123731A1 WO 2025123731 A1 WO2025123731 A1 WO 2025123731A1 CN 2024111133 W CN2024111133 W CN 2024111133W WO 2025123731 A1 WO2025123731 A1 WO 2025123731A1
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WIPO (PCT)
Prior art keywords
wus
resources
resource
groups
group
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PCT/CN2024/111133
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English (en)
Inventor
Zhi YAN
Haipeng Lei
Xiaodong Yu
Zhennian SUN
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Lenovo Beijing Ltd
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Lenovo Beijing Ltd
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Priority to PCT/CN2024/111133 priority Critical patent/WO2025123731A1/fr
Publication of WO2025123731A1 publication Critical patent/WO2025123731A1/fr
Pending legal-status Critical Current
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal where the received signal is a power saving command
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to wireless communications, and more specifically to a user equipment, a base station, processors, and methods for a wake up signal (WUS) resource determination.
  • WUS wake up signal
  • the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G) ) .
  • 3G third generation
  • 4G fourth generation
  • 5G fifth generation
  • 6G sixth generation
  • WUS wake-up signal
  • Main radio works for data and/or signaling transmission and reception (e.g., control signal monitoring and paging message receiving) , which can be turned off or set to deep sleep unless it is turned on indicated by wake-up signal.
  • data and/or signaling transmission and reception e.g., control signal monitoring and paging message receiving
  • the present disclosure relates to methods, apparatuses, and systems that support a wake up signal (WUS) resource determination, especially for a user equipment (UE) in idle/inactive states.
  • WUS wake up signal
  • a user equipment comprises: at least one memory; and at least one processor coupled with the at least one memory and configured to cause the UE to: receive a wake-up signal (WUS) configuration; determine a set of one or more WUS resources associated with a paging occasion based on the WUS configuration; determine, among the set of one or more WUS resources, at least one WUS resource based on the following: a group index of an UE group associated with the UE, and an association between UE groups and WUS resources; monitor a WUS signal in the at least one WUS resource; and determine, based on a wake-up indication of the WUS signal, to receive a paging message.
  • WUS wake-up signal
  • the set of one or more WUS resources is determined based on a period of the WUS and a time offset of the WUS.
  • the resource index is determined based on one of the following: an increasing or decreasing order of at least one starting time of the one or more WUS resources; or time offsets between the one or more WUS resources and the paging occasion.
  • the group index is determined based on a shifting value for the group index, and the shifting value for the group index is determined based on the following: a random seed, a scaling factor; and a set of one or more numbers of UE groups for the set of one or more WUS resources.
  • the random seed comprises one of a paging occasion index, a frame number, a subframe number, or slot number.
  • a base station comprises: a processor; and a transceiver coupled to the processor, wherein the processor is configured to: transmit, via the transceiver and to a user equipment (UE) , a wake-up signal (WUS) configuration, wherein the WUS configuration comprises a set of one or more WUS resources associated with a paging occasion; transmit, in at least one WUS resource, a WUS signal to the UE, wherein the at least one WUS resource is determined among the set of one or more WUS resources based on the following: a group index of an UE group associated with the UE, and an association between UE groups and WUS resources; and transmit, via the transceiver and to the UE, a paging message.
  • UE user equipment
  • WUS wake-up signal
  • the resource index is determined based on one of the following: an increasing or decreasing order of least one starting time of the one or more WUS resources; or time offsets between the one or more WUS resources and the paging occasion.
  • the resource index is determined based on a WUS window corresponding to the set of one or more WUS resources, and the resource index is further determined based on an increasing or decreasing order of at least one starting time of the one or more WUS resources within the WUS window.
  • the association is determined based on a number of UE groups for a WUS resource among the set of one or more WUS resources, and the number of UE groups is determined based on the following: a total number of UE groups, a number of WUS resources in the set of one or more WUS resources, a number of WUS beams associated with WUS resources, and a configured number of repetitions for each WUS signal.
  • the number of WUS resources is determined based on a WUS window for transmitting a WUS signal.
  • a first entry of the list of UE groups is mapped to a first group index on a first WUS resource among the set of one or more WUS resources
  • a last entry of the list of UE groups is mapped to a last group index on a last WUS resource among the set of one or more WUS resources.
  • the association is determined based on one of a cell ID, a frame number, or a slot number.
  • the list of UE groups is further determined from multiple lists of UE groups based on at least one time domain parameter.
  • the at least one time domain parameter comprises one or more of a frame number, a subframe number, a slot number, or a paging occasion index.
  • the group index is determined based on a shifting value for the group index, and the shifting value for the group index is determined based on the following: a random seed; a scaling factor; and a set of one or more numbers of UE groups for the set of one or more WUS resources.
  • the random seed comprises one of a paging occasion index, a frame number, a subframe number, or slot number.
  • a processor for wireless communication comprises: at least one memory; and a controller coupled with the at least one memory and configured to cause the controller to: receive, from a base station, a wake-up signal (WUS) configuration; determine a set of one or more WUS resources associated with a paging occasion based on the WUS configuration; determine, among the set of one or more WUS resources, at least one WUS resource based on the following: a group index of an UE group associated with the UE, and an association between UE groups and WUS resources; monitor a WUS signal in the at least one WUS resource; and determine, based on a wake-up indication of the WUS signal, to receive a paging message.
  • WUS wake-up signal
  • a processor for wireless communication comprises: at least one memory; and a controller coupled with the at least one memory and configured to cause the controller to: transmit, to a user equipment (UE) , a wake-up signal (WUS) configuration, wherein the WUS configuration comprises a set of one or more WUS resources associated with a paging occasion; transmit, in at least one WUS resource, a WUS signal to the UE, wherein the at least one WUS resource is determined among the set of one or more WUS resources based on the following: a group index of an UE group associated with the UE, and an association between UE groups and WUS resources; and transmit, to the UE, a paging message.
  • UE user equipment
  • WUS wake-up signal
  • a method performed by a user equipment comprises: receiving, from a base station, a wake-up signal (WUS) configuration; determining a set of one or more WUS resources associated with a paging occasion based on the WUS configuration; determining, among the set of one or more WUS resources, at least one WUS resource based on the following: a group index of an UE group associated with the UE, and an association between UE groups and WUS resources; monitoring a WUS signal in the at least one WUS resource; and determining, based on a wake-up indication of the WUS signal, to receive a paging message.
  • WUS wake-up signal
  • a method performed by a base station comprises: transmitting, to a user equipment (UE) , a wake-up signal (WUS) configuration, wherein the WUS configuration comprises a set of one or more WUS resources associated with a paging occasion; transmitting, in at least one WUS resource, a WUS signal to the UE, wherein the at least one WUS resource is determined among the set of one or more WUS resources based on the following: a group index of an UE group associated with the UE, and an association between UE groups and WUS resources; and transmitting, to the UE, a paging message.
  • UE user equipment
  • WUS wake-up signal
  • FIG. 1A illustrates an example of a wireless communications system that supports WUS resource determination in accordance with aspects of the present disclosure.
  • FIG. 1B illustrates an example interaction between a main radio and a separate ultra-low power wake-up receiver within a UE.
  • FIG. 2A illustrates an example of narrowband internet-of-things (NB-IoT) WUS configuration.
  • NB-IoT narrowband internet-of-things
  • FIG. 2B illustrates an example of enhanced machine type communication (eMTC) WUS configuration.
  • eMTC enhanced machine type communication
  • FIG. 3A illustrates an example of WUS group determination in narrowband internet-of-things (NB-IoT) .
  • FIG. 3B illustrates an example of WUS group determination in enhanced machine type communication (eMTC) .
  • eMTC enhanced machine type communication
  • FIG. 4 illustrates an example signaling procedure for WUS resource determination in accordance with aspects of the present disclosure.
  • the one or more UEs 104 may be dispersed throughout a geographic region of the wireless communications system 100A.
  • a UE 104 may include or may be referred to as a mobile device, a wireless device, a remote device, a remote unit, a handheld device, or a subscriber device, or some other suitable terminology.
  • the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples.
  • the UE 104 may be referred to as an internet-of-things (IoT) device, an internet-of-everything (IoE) device, or machine-type communication (MTC) device, among other examples.
  • IoT internet-of-things
  • IoE internet-of-everything
  • MTC machine-type communication
  • a UE 104 may be stationary in the wireless communications system 100A.
  • a UE 104 may be mobile in the wireless communications system 100A.
  • 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
  • the network entities 102 and the UEs 104 may use resources of the wireless communications system 100A (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) ) to perform various operations (e.g., wireless communications) .
  • the network entities 102 and the UEs 104 may support different resource structures.
  • the network entities 102 and the UEs 104 may support different frame structures.
  • the network entities 102 and the UEs 104 may support a single frame structure.
  • the network entities 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures) .
  • the network entities 102 and the UEs 104 may support various frame structures based on one or more numerologies.
  • One or more numerologies may be supported in the wireless communications system 100A, 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 subcarrier spacing e.g., 15 kHz
  • a time interval of a resource may be organized according to frames (also referred to as radio frames) .
  • Each frame may have a duration, for example, a 10 millisecond (ms) duration.
  • each frame may include multiple subframes.
  • each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration.
  • each frame may have the same duration.
  • each subframe of a frame may have the same duration.
  • a time interval of a resource may be organized according to slots.
  • a subframe may include a number (e.g., quantity) of slots.
  • the number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communications system 100A.
  • Each slot may include a number (e.g., quantity) of symbols (e.g., OFDM symbols) .
  • the number (e.g., quantity) of slots for a subframe may depend on a numerology.
  • a slot For a normal cyclic prefix, a slot may include 14 symbols.
  • a slot For an extended cyclic prefix (e.g., applicable for 60 kHz subcarrier spacing) , a slot may include 12 symbols.
  • the LP-WUS associated parameters are configured by higher layer.
  • the LP-WUS configuration is transmitted to the UE by being included in the system information or being included in a UE specific RRC signaling.
  • the UE monitors the WUS in a first frequency band (e.g., a first carrier, or a first BWP in the first carrier) .
  • the WUS indication e.g., WUS ON indication
  • the UE switches to receive paging message (e.g., in IDLE/INACTIVE states) in a second frequency band (in MR) or switches to DRX ON duration (if DRX configured) or allow UE monitoring control signal (e.g., CONNECTED states) in a second frequency band (in MR) .
  • the sequence of WUS can be generated with random QPSK sequence or ZC sequence.
  • OOK-1 one bit (e.g., the information bit) is transmitted in each OFDM symbol. It means that two different states, one of which modulates ‘on’ chip and the other of which modulates ‘off’ chip, are mapped to REs.
  • the random QPSK sequence or ZC sequence is mapped to REs to modulate ‘on’ chip in time domain, and zeros are mapped to the REs to modulate ‘off’ chip.
  • FIG. 2A illustrates an example of narrowband internet-of-things (NB-IoT) WUS configuration
  • FIG. 2B illustrates an example of enhanced machine type communication (eMTC) WUS configuration.
  • NB-IoT narrowband internet-of-things
  • eMTC enhanced machine type communication
  • a UE supporting group WUS may be configured to monitor a group WUS and a common WUS. Upon detecting either of them, the UE shall monitor POs.
  • the E-UTRAN may configure up to two WUS resources (e.g., numbered as WUS 0 and WUS 1) .
  • the timeoffset, g0, from the end of WUS resource numbered as WUS 0 to the start of corresponding PO is determined or configured.
  • the WUS resource numbered as WUS 0 may share radio resources with wus-Config.
  • the timeoffset from the end of WUS resource numbered as WUS 1 to the start of corresponding PO is a sum of the timeoffset g0 and the maximum WUS duration T max .
  • the E-UTRAN may configure up to 4 WUS resources (numbered as 0, 1, 2, 3) .
  • FIG. 3A illustrates an example of WUS group determination in narrowband internet-of-things (NB-IoT)
  • FIG. 3B illustrates an example of WUS group determination in enhanced machine type communication (eMTC) .
  • NB-IoT narrowband internet-of-things
  • eMTC enhanced machine type communication
  • the UE may determine the WUS group to monitor for each PO and the corresponding timeoffset.
  • the total number of WUS groups (i.e., maxWG as illustrated in FIGS. 3A and 3B) configured for a gap may be determined based on the following Equation (1) .
  • Equation (1) maxWR is the total number of WUS resources configured for the gap, and numGroupsList [i] is the number of WUS groups configured for WUS resource i (for example, WUS resource 0 and WUS resource 1 as illustrated in FIG. 3A) for the gap (e.g., numGroupsList [i] may be provided in gwus-Config) .
  • the UE may select the WUS group to monitor as below.
  • the UE may determines wg with the following Equation (2) .
  • the UE may determines wg with the following Equation (3) .
  • N w is the number of WUS groups in the selected WUS group set
  • wg is the index of the WUS group in the selected WUS group set (i.e., 0, ..., N w -1) .
  • the UE group index may be determined by the configured WUS resource (e.g., N w ) .
  • WUS resource e.g., N w
  • the UE group ID is determined after the WUS resource is determined.
  • Table 1 illustrates the UE group changing and switching among WUS resources for eMTC group WUS. It can be seen from Table 1 that the motivation of UE group changing and switching in eMTC is to solve the following two unfairness conditions.
  • the first unfairness condition relates to different false alarm probability. That is, when common WUS is configured to be eMTC/NB-IoT WUS in eMTC/NB-IoT WUS resource, the R16 UEs in eMTC/NB-IoT WUS resource may have higher false alarm probability than that the R16 UEs have in the NR WUS resource.
  • the second unfairness condition relates to different wake up time. That is, R16 UEs in a TDM-ed NR WUS resource may have to wake up earlier than R16 UEs in eMTC/NB-IoT WUS resource.
  • the UE in GROUP ID ⁇ 0, 1, 2, 3 ⁇ may monitor the WUS sequence at WUS resource 0; at PO#1, the UE in GROUP ID ⁇ 0, 1, 2, 3 ⁇ may monitor the WUS sequence at WUS resource 1; at PO#2, the UE in GROUP ID ⁇ 0, 1, 2, 3 ⁇ may monitor the WUS sequence at WUS resource 1; and at PO#3, the UE in GROUP ID ⁇ 0, 1, 2, 3 ⁇ may monitor the WUS sequence at WUS resource 2.
  • each PO group index will switch a number of four groups each time.
  • the UE may be required to monitor up to two WUS sequences, one is common WUS, another is UE group WUS. If there are two UE groups in one WUS resource to be waken up, the common WUS is expected to be received to guarantee that all of the UEs will wake up to monitor paging message, although the false alarm rate is higher for some UEs (since the WUS signal and paging message are monitored in the same band, there may be no further power consumption for eMTC/NBIoT) .
  • the UE may be required to monitor only one WUS sequence, or only some of the UE groups may be indicated by the WUS signal (e.g., codepoint based WUS indication) . If there are more than one UE group in one WUS resource (corresponding to the PO) to be waken up (e.g., only three UE groups can be waken up at a time) , some of the UE groups may miss the paging message in this PO, so there is a need to randomize the UE groups in one WUS resource to avoid the wake-up collision all the time.
  • the WUS signal e.g., codepoint based WUS indication
  • some embodiments of the present disclosure propose a solution of WUS resource determination, especially for a UE in idle/inactive states.
  • a wake-up signal (WUS) configuration is received, a set of one or more WUS resources associated with a paging occasion based on the WUS configuration is determined, and at least one WUS resource based on the following is determined among the set of one or more WUS resources: a group index of an UE group associated with the UE, and an association between UE groups and WUS resources.
  • a WUS signal in the at least one WUS resource is monitored, and based on a wake-up indication of the WUS signal, it is determined to receive a paging message.
  • a WUS resource determination is provided to trigger one or more UEs to receive a paging message.
  • FIG. 4 illustrates an example signaling procedure 400 for WUS resource determination in accordance with aspects of the present disclosure.
  • a base station 402 may transmit, to a UE 404, a WUS configuration 412, where the base station 402 may be an example of network entity 102 in FIG. 1, and the UE 404 may be an example of UE 104 in FIG. 1. Accordingly, at 414, the UE 404 may receive the WUS configuration 412. At 416, the UE 404 may determine a set of one or more WUS resources associated with a paging occasion based on the WUS configuration. At 418, the UE 404 may determine, among the set of one or more WUS resources, at least one WUS resource based on the following: a group index of an UE group associated with the UE, and an association between UE groups and WUS resources.
  • the UE 404 may monitor a WUS signal in the at least one WUS resource.
  • the base station 402 may transmit, in the at least one WUS resource, a WUS signal 432 to the UE 404.
  • the WUS signal 422 may be received by the UE 404 in the at least one WUS resource.
  • the UE 404 may determine, based on a wake-up indication of the WUS signal 432, to receive a paging message.
  • the base station 402 may transmit, to the UE 404, the paging message 442. It should be noted that, the operation 436 may be carried out before the operation 440 or at the same time with the operation 440.
  • the group index is one of the following: configured in the WUS configuration; or determined based on a UE identity (ID) of the UE.
  • the set of one or more WUS resources is determined based on a period of the WUS and a time offset of the WUS.
  • the UE may determine the at least one WUS resource by: determining a resource index of the set of one or more WUS resources based on a time domain position of the one or more WUS resources.
  • the resource index is determined based on one of the following: an increasing or decreasing order of at least one starting time of the one or more WUS resources; or time offsets between the one or more WUS resources and the paging occasion.
  • the resource index is determined based on a WUS window corresponding to the set of one or more WUS resources, and the resource index is further determined based on an increasing or decreasing order of at least one starting time of the one or more WUS resources within the WUS window.
  • FIG. 5A illustrates an example of WUS resource determination in accordance with aspects of the present disclosure
  • FIG. 5B illustrates another example of WUS resource determination in accordance with aspects of the present disclosure.
  • multiple LP-WUS resources are associated with a paging occasion (PO)
  • the UE may be configured or determined with a first group index
  • the UE may determine one or more of the multiple LP-WUS resources for WUS monitoring based on the first group index and an association between UE groups and LP-WUS resources.
  • the multiple LP-WUS resources may be determined by a LP-WUS period and a time offset.
  • the UE determines the LP-WUS resource with a LP-WUS resource index based on a time domain position of the LP-WUS resource (e.g., starting symbol/slot index of the LP-WUS resource corresponding to the PO) .
  • the LP-WUS resource index is determined by an decreasing order of the starting times of the LP-WUS resources, or the LP-WUS resource index is determined by the time offset between the LP-WUS resource and the corresponding paging occasion.
  • the association is determined based on a number of UE groups for a WUS resource among the set of one or more WUS resources, and the number of UE groups is determined based on the following: a total number of UE groups, a number of WUS resources in the set of one or more WUS resources, a number of WUS beams associated with WUS resources, and a configured number of repetitions for each WUS signal.
  • the number of WUS resources is determined based on a WUS window for receiving a WUS signal.
  • FIG. 6 illustrates an example of UE group number determination in accordance with aspects of the present disclosure.
  • the UE may determine the UE group number for each LP-WUS resource.
  • the UE group number for each LP-WUS resource may be determined by the following: the total UE group number, the total LP-WUS resource number associated with the paging occasion (PO) , the associated LP-WUS beams number, and the configured repetition number for each WUS signal.
  • a first entry of the list of UE groups is mapped to a first group index on a first WUS resource among the set of one or more WUS resources
  • a last entry of the list of UE groups is mapped to a last group index on a last WUS resource among the set of one or more WUS resources.
  • FIG. 7 illustrates an example of UE group list determination in accordance with aspects of the present disclosure.
  • the UE may generate or determine a UE group list based on the UE group indexes, and the UE may map the UE group list to the LP-WUS resources according to the UE group number for each LP-WUS resource.
  • the UE may generate or determine the UE group list from one or more of sequences or orders of the UE group indexes.
  • the first entry of the UE group list is mapped to the first WUS group on the first configured WUS resource, and the last entry corresponds to the last WUS group on the last configured WUS resource.
  • the association is determined based on one of a cell ID, a frame number, or a slot number.
  • the list of UE groups is further determined from multiple lists of UE groups based on at least one time domain parameter.
  • the group index is determined based on a shifting value for the group index, and the shifting value for the group index is determined based on the following: a random seed, a scaling factor; and a set of one or more numbers of UE groups for the set of one or more WUS resources.
  • the random seed comprises one of a paging occasion index, a frame number, a subframe number, or slot number.
  • FIG. 8 illustrates an example of UE group list switch in accordance with aspects of the present disclosure.
  • the association between UE groups and LP-WUS resources may be determined by the cell ID or frame number or slot number.
  • the UE group list may switch among multiple determined UE group lists based on the frame number, e.g., the UE group list may switch every paging occasion (or paging period) .
  • the first group index mentioned above may be determined by a UE group index shifting value, and the UE group index shifting value may be determined by a random seed (e.g., the paging occasion index, the frame number, the subframe number, or the slot number) , a scaling factor, and UE group numbers for each LP-WUS.
  • a random seed e.g., the paging occasion index, the frame number, the subframe number, or the slot number
  • a scaling factor e.g., the paging occasion index, the frame number, the subframe number, or the slot number
  • the first group index may be determined with the following Equation (4) .
  • T cell is the default DRX cycle for the cell
  • SFN is the SFN corresponding to the PO
  • H-SFN is the H-SFN corresponding to the PO
  • maxWG is the total number of WUS groups configured in numGroupsList for the gap.
  • G SFN is the random UE group index shifting value ranging from 1 to maximal of WUS group number amongst all WUS resources for the PO, which may be determined by the frame number, the subframe number, PO index, Cell ID etc.
  • G SFN is a scaling factor of the maximal or minimum of WUS group number amongst all WUS resources for the PO, and the scaling factor is configured by higher layer.
  • WG current is the index of the WUS group (WG) to monitor for the current PO
  • WG initial is the index of the WUS group (WG) .
  • Table 2 illustrates the UE group changing/alternation among WUS resources with fixed group index shift value of 4
  • Table 3 illustrates the UE group changing/alternation among WUS resources in accordance with aspects of the present disclosure.
  • FIG. 9 illustrates an example of a device 900 that supports WUS resource determination in accordance with aspects of the present disclosure.
  • the device 900 may be an example of a UE 104-1 as described herein.
  • the device 900 may support wireless communication with one or more network entities 102, UEs 104, or any combination thereof.
  • the device 900 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 902, a memory 904, a transceiver 906, and, optionally, an I/O controller 908. 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) .
  • the processor 902, the memory 904, the transceiver 906, 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 902, the memory 904, the transceiver 906, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
  • the processor 902, the memory 904, the transceiver 906, 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 902 and the memory 904 coupled with the processor 902 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 902, instructions stored in the memory 904) .
  • the processor 902 may support wireless communication at the device 900 in accordance with examples as disclosed herein.
  • the processor 902 may be configured to operable to support means for receiving, from a base station, a wake-up signal (WUS) configuration; means for determining a set of one or more WUS resources associated with a paging occasion based on the WUS configuration; means for determining, among the set of one or more WUS resources, at least one WUS resource based on the following: a group index of an UE group associated with the UE, and an association between UE groups and WUS resources; means for monitoring a WUS signal in the at least one WUS resource; and means for determining, based on a wake-up indication of the WUS signal, to receive a paging message.
  • WUS wake-up signal
  • the processor 902 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 902 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 902.
  • the processor 902 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 904) to cause the device 900 to perform various functions of the present disclosure.
  • the memory 904 may include random access memory (RAM) and read-only memory (ROM) .
  • the memory 904 may store computer-readable, computer-executable code including instructions that, when executed by the processor 902 cause the device 900 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 902 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the memory 904 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 908 may manage input and output signals for the device 900.
  • the I/O controller 908 may also manage peripherals not integrated into the device M02.
  • the I/O controller 908 may represent a physical connection or port to an external peripheral.
  • the I/O controller 908 may utilize an operating system such as or another known operating system.
  • the I/O controller 908 may be implemented as part of a processor, such as the processor 906.
  • a user may interact with the device 900 via the I/O controller 908 or via hardware components controlled by the I/O controller 908.
  • the device 900 may include a single antenna 910. However, in some other implementations, the device 900 may have more than one antenna 910 (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 906 may communicate bi-directionally, via the one or more antennas 910, wired, or wireless links as described herein.
  • the transceiver 906 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 906 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 910 for transmission, and to demodulate packets received from the one or more antennas 910.
  • the transceiver 906 may include one or more transmit chains, one or more receive chains, or a combination thereof.
  • a transmit chain may be configured to generate and transmit signals (e.g., control information, data, packets) .
  • the transmit chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium.
  • the at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) .
  • the transmit chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium.
  • the transmit chain may also include one or more antennas 910 for transmitting the amplified signal into the air or wireless medium.
  • a receive chain may be configured to receive signals (e.g., control information, data, packets) over a wireless medium.
  • the receive chain may include one or more antennas 910 for receive the signal over the air or wireless medium.
  • the receive chain may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal.
  • the receive chain may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal.
  • the receive chain may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
  • FIG. 10 illustrates an example of a processor 1000 that supports WUS resource determination in accordance with aspects of the present disclosure.
  • the processor 1000 may be an example of a processor configured to perform various operations in accordance with examples as described herein.
  • the processor 1000 may include a controller 1002 configured to perform various operations in accordance with examples as described herein.
  • the processor 1000 may optionally include at least one memory 1004, such as L1/L2/L3 cache. Additionally, or alternatively, the processor 1000 may optionally include one or more arithmetic-logic units (ALUs) 1000.
  • ALUs arithmetic-logic units
  • One or more of 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) .
  • the processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 1000) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
  • RAM random access memory
  • ROM read-only memory
  • DRAM dynamic RAM
  • SDRAM synchronous dynamic RAM
  • SRAM static RAM
  • FeRAM ferroelectric RAM
  • MRAM magnetic RAM
  • RRAM resistive RAM
  • PCM phase change memory
  • the controller 1002 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 1000 to cause the processor 1000 to support various operations of a base station in accordance with examples as described herein.
  • the controller 1002 may operate as a control unit of the processor 1000, generating control signals that manage the operation of various components of the processor 1000. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
  • the controller 1002 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 1004 and determine subsequent instruction (s) to be executed to cause the processor 1000 to support various operations in accordance with examples as described herein.
  • the controller 1002 may be configured to track memory address of instructions associated with the memory 1004.
  • the controller 1002 may be configured to decode instructions to determine the operation to be performed and the operands involved.
  • the controller 1002 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 1000 to cause the processor 1000 to support various operations in accordance with examples as described herein.
  • the controller 1002 may be configured to manage flow of data within the processor 1000.
  • the controller 1002 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 1000.
  • ALUs arithmetic logic units
  • the memory 1004 may include one or more caches (e.g., memory local to or included in the processor 1000 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementation, the memory 1004 may reside within or on a processor chipset (e.g., local to the processor 1000) . In some other implementations, the memory 1004 may reside external to the processor chipset (e.g., remote to the processor 1000) .
  • caches e.g., memory local to or included in the processor 1000 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc.
  • the memory 1004 may reside within or on a processor chipset (e.g., local to the processor 1000) . In some other implementations, the memory 1004 may reside external to the processor chipset (e.g., remote to the processor 1000) .
  • the memory 1004 may store computer-readable, computer-executable code including instructions that, when executed by the processor 1000, cause the processor 1000 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 controller 1002 and/or the processor 1000 may be configured to execute computer-readable instructions stored in the memory 1004 to cause the processor 1000 to perform various functions.
  • the processor 1000 and/or the controller 1002 may be coupled with or to the memory 1004, and the processor 1000, the controller 1002, and the memory 1004 may be configured to perform various functions described herein.
  • the processor 1000 may include multiple processors and the memory 1004 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
  • the one or more ALUs 1000 may be configured to support various operations in accordance with examples as described herein.
  • the one or more ALUs 1000 may reside within or on a processor chipset (e.g., the processor 1000) .
  • the one or more ALUs 1000 may reside external to the processor chipset (e.g., the processor 1000) .
  • One or more ALUs 1000 may perform one or more computations such as addition, subtraction, multiplication, and division on data.
  • one or more ALUs 1000 may receive input operands and an operation code, which determines an operation to be executed.
  • One or more ALUs 1000 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 1000 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 1000 to handle conditional operations, comparisons, and bitwise operations.
  • logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 1000 to handle conditional operations, comparisons, and bitwise operations.
  • the processor 1000 may support wireless communication in accordance with examples as disclosed herein.
  • the processor 1000 may be configured to or operable to support means for transmitting, to a user equipment (UE) , a wake-up signal (WUS) configuration, wherein the WUS configuration comprises a set of one or more WUS resources associated with a paging occasion; means for transmitting, in at least one WUS resource, a WUS signal to the UE, wherein the at least one WUS resource is determined among the set of one or more WUS resources based on the following: a group index of an UE group associated with the UE, and an association between UE groups and WUS resources; and means for transmitting, to the UE, a paging message.
  • UE user equipment
  • WUS wake-up signal
  • FIG. 11 illustrates a flowchart of a method 1100 that supports WUS resource determination in accordance with aspects of the present disclosure.
  • the operations of the method 1100 may be implemented by a device or its components as described herein.
  • the operations of the method 1100 may be performed by a UE 104 as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method may include receiving, from a base station, a wake-up signal (WUS) configuration.
  • WUS wake-up signal
  • the operations of 1110 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1110 may be performed by a device as described with reference to FIG. 1A.
  • the method may include determining a set of one or more WUS resources associated with a paging occasion based on the WUS configuration.
  • the operations of 1120 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1120 may be performed by a device as described with reference to FIG. 1A.
  • the method may include determining, among the set of one or more WUS resources, at least one WUS resource based on the following: a group index of an UE group associated with the UE, and an association between UE groups and WUS resources.
  • the operations of 1130 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1130 may be performed by a device as described with reference to FIG. 1A.
  • the method may include determining, based on a wake-up indication of the WUS signal, to receive a paging message.
  • the operations of 1150 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1150 may be performed by a device as described with reference to FIG. 1A.

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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 un équipement utilisateur, une station de base, des processeurs et des procédés pour une détermination de ressources de signal de réveil (WUS). Selon un aspect, un équipement utilisateur (UE) reçoit depuis une station de base une configuration de signal de réveil (WUS). L'UE détermine un ensemble d'une ou plusieurs ressources WUS associées à une occasion de radiomessagerie sur la base de la configuration de WUS. L'UE détermine, parmi l'ensemble d'une ou de plusieurs ressources WUS, au moins une ressource WUS sur la base des éléments suivants : un indice de groupe d'un groupe d'UE associé à l'UE et une association entre des groupes d'UE et des ressources WUS. L'UE surveille un signal WUS dans la ou les ressources WUS. L'UE détermine, sur la base d'une indication de réveil du signal WUS, la réception d'un message de radiomessagerie.
PCT/CN2024/111133 2024-08-09 2024-08-09 Détermination de ressources de wus Pending WO2025123731A1 (fr)

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