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WO2025148269A1 - Systèmes et procédés pour prendre en charge l'émission ou la réception de signaux selon la périodicité adaptative d'un canal commun - Google Patents

Systèmes et procédés pour prendre en charge l'émission ou la réception de signaux selon la périodicité adaptative d'un canal commun

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Publication number
WO2025148269A1
WO2025148269A1 PCT/CN2024/106385 CN2024106385W WO2025148269A1 WO 2025148269 A1 WO2025148269 A1 WO 2025148269A1 CN 2024106385 W CN2024106385 W CN 2024106385W WO 2025148269 A1 WO2025148269 A1 WO 2025148269A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
periodicity
occasion
index
wireless communication
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/CN2024/106385
Other languages
English (en)
Inventor
Ziyang Li
Nan Zhang
Fangyu CUI
Wei Cao
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.)
ZTE Corp
Original Assignee
ZTE Corp
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 ZTE Corp filed Critical ZTE Corp
Priority to PCT/CN2024/106385 priority Critical patent/WO2025148269A1/fr
Publication of WO2025148269A1 publication Critical patent/WO2025148269A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/115—Grant-free or autonomous transmission
    • 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

Definitions

  • the disclosure relates generally to wireless communications, including but not limited to systems and methods for supporting transmission or reception of signals according to the adaptive periodicity of a common channel.
  • a wireless communication device e.g., UE
  • the wireless communication device can determine a resource for transmission or reception of a signal.
  • the wireless communication device can perform the transmission or reception of the signal, according to the resource.
  • the wireless communication device can receive a resource configuration (e.g., implicitly or explicitly provides active/inactive time information) from a wireless communication node (e.g., BS) .
  • the wireless communication device can receive the resource configuration via system information (e.g., SIB1, SIB19, MIB) signaling or radio resource control (RRC) signaling.
  • the resource configuration may include at least one of the following: information of at least one type of active or inactive time, or information of at least one synchronization signal (SS) (e.g., SSB) .
  • SS synchronization signal
  • the at least one type of active or inactive time can be associated with the at least one SS. In some implementations, at least one of: one type of active or inactive time can be associated with one SS or SS index; one type of active or inactive time can be associated with a plurality of SSes or SS indices; or one type of active or inactive time can be associated with all of the at least one SS.
  • the resource may include at least one of the following: a valid or invalid occasion for the signal; a valid or invalid random access channel (RACH) occasion (RO) ; a valid or invalid physical RACH (PRACH) repetition; an association between at least one index of the synchronization signal and at least one occasion for the signal; a mapping ratio N for mapping between an index of the synchronization signal and an occasion for the signal; a PRACH repetition number; a random access response (RAR) window length; or a valid or invalid physical uplink shared channel (PUSCH) occasion of a configured grant (CG) transmission.
  • RACH random access channel
  • PRACH physical RACH
  • the occasion for the signal for validation can be from a candidate occasion list/set/group.
  • the candidate occasion list may include at least one of the following: all occasions for the signal; occasions for the signal after the mapping between at least one index of one or more synchronization signals and at least one occasion for the signal; occasions for the signal that are associated or mapped with at least one index of one or more synchronization signals; occasions for the signal that are associated with at least one index of one or more synchronization signals with first periodicity; or occasions for the signal that are associated with at least one synchronization signal with a first index.
  • the wireless communication device can determine for initial cell selection that half frames with synchronization signal (SS) /physical broadcast channel (PBCH) blocks occur with a periodicity of N frames, where N can be determined according to at least one of the following: a type or capability of the wireless communication device, whether the wireless communication device is served by a satellite, or whether the wireless communication device is served by a repeater node.
  • SS synchronization signal
  • PBCH physical broadcast channel
  • N when the type or capability is normal, N is a first value; when the type or capability includes support for non-terrestrial network (NTN) , N is a second value; when the wireless communication device is not served by a satellite or a repeater node, N is a first value; or when the wireless communication device is served by a satellite or a repeater node, N is a second value, where the first value and the second value are each a respective integer value.
  • N non-terrestrial network
  • the signal may include a random access signal or a physical random access channel (PRACH) transmission; one or more occasions of the signal (e.g., PRACH occasions) can be validated by a synchronization signal associated with the signal; the wireless communication device can determine one or more valid or invalid occasions of the signal according to the resource configuration; or the wireless communication device can determine one or more valid or invalid repetitions of the signal according to the resource configuration.
  • PRACH physical random access channel
  • the signal may include a random access signal or a physical random access channel (PRACH) transmission; one or more occasions of the signal can be validated by a synchronization signal associated with the signal; the wireless communication device can determine one or more valid or invalid occasions of the signal according to at least one location, time period, periodicity, or configuration of the synchronization signal; the wireless communication device can determine one or more valid or invalid repetitions of the signal according to at least one location, time period, periodicity, or configuration of the synchronization signal; at least one synchronization signal in a first time period may have a different periodicity as at least one synchronization signal in a second time period; or at least one synchronization signal with a first index may have a different periodicity as at least one synchronization signal with a second index.
  • PRACH physical random access channel
  • the signal may include a random access signal or a physical random access channel (PRACH) transmission; one or more occasions of the signal can be validated by a synchronization signal associated with the signal; the wireless communication device can determine a sequence of the signal according to a sequence of the synchronization signal; the wireless communication device can determine one or more valid or invalid occasions of the signal according to a sequence of the synchronization signal; the wireless communication device can determine a mapping ratio N for mapping between an index of the synchronization signal and an occasion for the signal, where the mapping ratio can correspond to the index, a periodicity of the synchronization signal, or a list/set of synchronization signals, and where N can be defined as: a number of occasions associated with the index of the synchronization signal or a number of SSBs corresponding to all candidate SSBs within an association period; or the wireless communication device can determine a number of frequency division multiplexed occasions of the signal, where the number of frequency division multiplexed occasions multiplied by the mapping ratio
  • PRACH physical random access channel
  • Example configuration 1 Explicitly introducing a new PRACH configuration to adapt to the periodicity of SSB (or other SS) .
  • Example configuration 2 Implicitly associating PRACH (or other random access signaling) occasions with synchronization signals.
  • FIG. 1 illustrates an example cellular communication network in which techniques disclosed herein may be implemented, in accordance with an embodiment of the present disclosure
  • FIG. 4 illustrates an example arrangement/configuration of a satellite footprint and a beam footprint, in accordance with some embodiments of the present disclosure
  • FIG. 5 illustrates an example arrangement/configuration of an active/inactive time (e.g., active time and/or inactive time) configuration, in accordance with some embodiments of the present disclosure
  • FIG. 6 illustrates another example arrangement/configuration of an active/inactive time configuration, in accordance with some embodiments of the present disclosure
  • FIG. 7 illustrates another example arrangement/configuration of an active/inactive time configuration, in accordance with some embodiments of the present disclosure
  • FIG. 8 illustrates another example arrangement/configuration of an active/inactive time configuration, in accordance with some embodiments of the present disclosure
  • FIG. 9 illustrates an example arrangement/configuration of SSB periodicities, in accordance with some embodiments of the present disclosure.
  • FIG. 10 illustrates another example arrangement/configuration of SSB periodicities, in accordance with some embodiments of the present disclosure
  • FIG. 11 illustrates an example arrangement/configuration of a number of FDMed ROs, mapping ratio (s) , and SSB index/indices, in accordance with some embodiments of the present disclosure
  • FIG. 12 illustrates an example configuration of an RAR window design, mapping ratio, and SSB index, in accordance with some embodiments of the present disclosure.
  • FIG. 13 illustrates a flow diagram of an example method for supporting transmission and/or reception of signals according to adaptive periodicity of a common channel, in accordance with an embodiment of the present disclosure.
  • Such an example network 100 includes a base station 102 (hereinafter “BS 102” ; also referred to as wireless communication node) and a user equipment device 104 (hereinafter “UE 104” ; also referred to as wireless communication device) that can communicate with each other via a communication link 110 (e.g., a wireless communication channel) , and a cluster of cells 126, 130, 132, 134, 136, 138 and 140 overlaying a geographical area 101.
  • the BS 102 and UE 104 are contained within a respective geographic boundary of cell 126.
  • Each of the other cells 130, 132, 134, 136, 138 and 140 may include at least one base station operating at its allocated bandwidth to provide adequate radio coverage to its intended users.
  • the BS 102 may operate at an allocated channel transmission bandwidth to provide adequate coverage to the UE 104.
  • the BS 102 and the UE 104 may communicate via a downlink radio frame 118, and an uplink radio frame 124 respectively.
  • Each radio frame 118/124 may be further divided into sub-frames 120/127 which may include data symbols 122/128.
  • the BS 102 and UE 104 are described herein as non-limiting examples of “communication nodes, ” generally, which can practice the methods disclosed herein. Such communication nodes may be capable of wireless and/or wired communications, in accordance with various embodiments of the present solution.
  • FIG. 2 illustrates a block diagram of an example wireless communication system 200 for transmitting and receiving wireless communication signals (e.g., OFDM/OFDMA signals) in accordance with some embodiments of the present solution.
  • the system 200 may include components and elements configured to support known or conventional operating features that need not be described in detail herein.
  • system 200 can be used to communicate (e.g., transmit and receive) data symbols in a wireless communication environment such as the wireless communication environment 100 of Figure 1, as described above.
  • the System 200 generally includes a base station 202 (hereinafter “BS 202” ) and a user equipment device 204 (hereinafter “UE 204” ) .
  • the BS 202 includes a BS (base station) transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218, each module being coupled and interconnected with one another as necessary via a data communication bus 220.
  • the UE 204 includes a UE (user equipment) transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each module being coupled and interconnected with one another as necessary via a data communication bus 240.
  • the BS 202 communicates with the UE 204 via a communication channel 250, which can be any wireless channel or other medium suitable for transmission of data as described herein.
  • system 200 may further include any number of modules other than the modules shown in Figure 2.
  • modules other than the modules shown in Figure 2.
  • Those skilled in the art will understand that the various illustrative blocks, modules, circuits, and processing logic described in connection with the embodiments disclosed herein may be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps are described generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software can depend upon the particular application and design constraints imposed on the overall system. Those familiar with the concepts described herein may implement such functionality in a suitable manner for each particular application, but such implementation decisions should not be interpreted as limiting the scope of the present disclosure.
  • the UE transceiver 230 may be referred to herein as an “uplink” transceiver 230 that includes a radio frequency (RF) transmitter and a RF receiver each comprising circuitry that is coupled to the antenna 232.
  • a duplex switch (not shown) may alternatively couple the uplink transmitter or receiver to the uplink antenna in time duplex fashion.
  • the BS transceiver 210 may be referred to herein as a “downlink” transceiver 210 that includes a RF transmitter and a RF receiver each comprising circuity that is coupled to the antenna 212.
  • a downlink duplex switch may alternatively couple the downlink transmitter or receiver to the downlink antenna 212 in time duplex fashion.
  • the operations of the two transceiver modules 210 and 230 may be coordinated in time such that the uplink receiver circuitry is coupled to the uplink antenna 232 for reception of transmissions over the wireless transmission link 250 at the same time that the downlink transmitter is coupled to the downlink antenna 212. Conversely, the operations of the two transceivers 210 and 230 may be coordinated in time such that the downlink receiver is coupled to the downlink antenna 212 for reception of transmissions over the wireless transmission link 250 at the same time that the uplink transmitter is coupled to the uplink antenna 232. In some embodiments, there is close time synchronization with a minimal guard time between changes in duplex direction.
  • the network communication module 218 generally represents the hardware, software, firmware, processing logic, and/or other components of the base station 202 that enable bi-directional communication between base station transceiver 210 and other network components and communication nodes configured to communicate with the base station 202.
  • network communication module 218 may be configured to support internet or WiMAX traffic.
  • network communication module 218 provides an 802.3 Ethernet interface such that base station transceiver 210 can communicate with a conventional Ethernet based computer network.
  • the network communication module 218 may include a physical interface for connection to the computer network (e.g., Mobile Switching Center (MSC) ) .
  • MSC Mobile Switching Center
  • the Open Systems Interconnection (OSI) Model (referred to herein as, “open system interconnection model” ) is a conceptual and logical layout that defines network communication used by systems (e.g., wireless communication device, wireless communication node) open to interconnection and communication with other systems.
  • the model is broken into seven subcomponents, or layers, each of which represents a conceptual collection of services provided to the layers above and below it.
  • the OSI Model also defines a logical network and effectively describes computer packet transfer by using different layer protocols.
  • the OSI Model may also be referred to as the seven-layer OSI Model or the seven-layer model.
  • a first layer may be a physical layer.
  • a second layer may be a Medium Access Control (MAC) layer.
  • MAC Medium Access Control
  • the SSB periodicity may be extended accordingly to a larger or more adaptive value, e.g., 640 ms.
  • the larger/adaptive SSB periodicity may have an impact on other signal/channel designs/configurations.
  • the technical solutions described herein can provide an initial access design with adaptive periodicity for the common channel.
  • the present disclosure can be applied to 5G and/or 6G.
  • the structure of transparent NTN is shown in FIG. 3.
  • the link between UE and satellite is a service link.
  • the link between BS and satellite is a feeder link that can be common for all UEs within the same cell.
  • beaming hopping can facilitate coverage of a huge area with limited simultaneous beams.
  • the coverage availability, based on beam sweeping periodicity, can be adaptive to the traffic load in different areas.
  • the entire/whole footprint of a satellite can be exceedingly large.
  • a typical low-earth orbit (LEO) satellite at a 600km orbital height can cover a circular area with a radius of approximately 1000km, given a minimum elevation angle of 30 degrees.
  • LEO low-earth orbit
  • repeaters e.g., NCR
  • reconfigurable intelligent surface (RIS) with beam sweeping capability can be used to deal with coverage holes/gaps.
  • the common signal from the base station (BS) can be forwarded by the repeater, or RIS, using beam hopping.
  • network energy saving (NES) can be considered by a BS using beam hopping to serve low traffic areas or off-peak hours.
  • beam can be a transmission configuration indicator (TCI) state, a spatial filter, an associated RS with a quasi-colocation (QCL) relationship, or a beam index for a communication node.
  • the communication node can be a network node or a terminal.
  • active time can refer to the time period when a service (e.g., including uplink (UL) and/or downlink (DL) transmission access) is available to a certain UE/cell or beam (s) .
  • the active time can refer to serving time, beam active time, activated time ON-duration, and the like.
  • a satellite may cover a huge area/footprint (e.g., larger than one cell) with beam hopping, and one cell or one UE may be served within the active time when the corresponding beam is available (e.g., switched on or hopped) to such an area, cell, or UE.
  • inactive time can refer to the time period when the service is not available to a certain UE/cell or beam (s) .
  • the inactive time can refer to sleep time, beam inactive time, de-activated time, OFF-duration, and the like.
  • the inactive time may be periodic, such as when the inactive time pattern is certain over a relatively long time period.
  • the inactive time may be aperiodic, such as when the traffic is unexpected and no certain pattern can be maintained.
  • the UE within the inactive time, the UE may not be expected to transmit and/or receive.
  • the transmission and/or reception may be canceled.
  • the transmission and/or reception may be postponed.
  • the UE can receive/obtain configuration information via signaling (e.g., system information, SIB1, SIB19, MIB, RRC) from a gNB/BS related to at least one of the following: one or more types of active/inactive time, or one or more SSBs.
  • the configuration information of one or more SSBs may include at least one of the following: one or more SSB indexes; one or more periodicities; one or more offsets; one or more locations; or one or more patterns, e.g., SSB patterns, SSB to PRACH association pattern, among others.
  • the active time configuration can be/include/specify/indicate a regular pattern. In each period, there can be one duration of active time.
  • the active time configuration can be determined by a periodicity, an offset (which may also be a combination of a slot level offset and a symbol level offset) , and/or a duration. The meaning or relationship of these parameters is illustrated in FIG. 5.
  • the active time configuration can be an irregular pattern. In each period, there can be more than one duration of active time. In some implementations, the more than one duration of active time can correspond to more than one type of active time.
  • the active time configuration can be determined by a periodicity, a plurality of offsets (each offset may also be a combination of a slot level offset and a symbol level offset) , and a plurality of durations. The meaning or relationship of these parameters is illustrated in FIG. 6. As shown, the first offset can be defined as the time interval between the reference time and the start (slot or symbol) of the first duration of active time in the period. The second offset can be defined as the time interval between the reference time and the start (slot or symbol) of the second duration of active time in the period.
  • Type 1 active time can be associated with SSB indexes with the first periodicity
  • Type 2 active time can be associated with SSB indexes with the second periodicity.
  • Type 1 active time can be associated with SSB indexes indicated by one parameter, e.g., ssb-PositionsInBurst in SIB1
  • Type 2 active time can be associated with SSB indexes indicated by another parameter, e.g., a new parameter in SIB1.
  • one type of active/inactive time can correspond to both UL and DL.
  • one type of active/inactive can correspond to an UL operation
  • another type of active/inactive can correspond to a DL operation.
  • n can be applied to any row, where x*n equals to SSB periodicity/10ms, e.g., when SSB periodicity is 160 ms, x*n equals to 16, and when SSB periodicity is 320 ms, x*n equals to 32.
  • n f can refer to the frame index at which a RACH occasion is configured.
  • the SSB periodicity when the SSB periodicity is extended, different SSBs have different periodicities, or more than one SSB is multiplexed in the same time and frequency domain resources, there can be further restrictions on the association between PRACH occasions and SSBs.
  • the UE can determine valid or invalid PRACH occasions according to the active/inactive time configuration, as shown in FIG. 8.
  • SSB periodicity can be unchanged, e.g., different SSBs may have the same periodicity.
  • the PRACH occasion is not valid if the PRACH occasion is not within the active time. In some implementations, the PRACH occasion is not valid if the PRACH occasion overlaps with the inactive time. In some implementations, the PRACH occasion is not valid if the PRACH occasion is not within the active time corresponding to the associated SSB (s) . In some implementations, the PRACH occasion is not valid if the PRACH occasion overlaps with the inactive time corresponding to the associated SSB (s) .
  • the UE can determine valid or invalid PRACH repetitions according to the active/inactive time configuration.
  • the SSB periodicity can be unchanged, e.g., different SSBs may have the same periodicity.
  • the PRACH repetition is not valid if the PRACH repetition is not within the active time.
  • the PRACH repetition is not valid if the PRACH repetition overlaps with the inactive time.
  • the PRACH repetition is not valid if the PRACH occasion is not within the active time corresponding to the associated SSB(s) .
  • the PRACH repetition is not valid if the PRACH occasion overlaps with the inactive time corresponding to the associated SSB (s) .
  • a new validation rule can be applied when SSB periodicity changes, such that some PRACH occasions can be determined to be invalid according to the changed SSB periodicity and location.
  • the new validation rule can ensure that UE selects a proper PRACH occasion to transmit PRACH using the beam that is active. For example, as shown in FIG. 9, during the first time interval [t1, t2] , e.g., during initial cell selection or before the UE connects to the network, the SSBs (e.g., in an SSB burst) may have the first periodicity P1.
  • the second periodicity P2 can be indicated to the UE via UE specific or cell specific signaling.
  • the mapping between SSBs and PRACH can be updated based on the new SSB periodicity, or the UE can re-validate (using the validation based on the new P2) and identify the RO (with the newly assumed P2) from the originally associated ROs (by assuming P1) .
  • the SSBs e.g., in an SSB burst
  • the SSBs (e.g., in another SSB burst) may have the second periodicity.
  • the SSBs may have the first periodicity.
  • the SSBs may have the second periodicity.
  • different SSBs may have different periodicities.
  • the mapping and/or validation for PRACH are to be done for the SSBs with different SSB periodicities.
  • at least one synchronization signal (SS) with a first index may have a different periodicity than at least one SS signal with a second index.
  • some of the PRACH occasions associated with a specific SSB can be invalid.
  • the PRACH configuration can be pre-defined. In some implementations, the same number of PRACH occasions or preambles can be associated with each SSB.
  • a new validation rule can be applied, such that some PRACH occasions may be invalid according to the SSB periodicity and location of the associated SSB.
  • the new validation rule can ensure that UE selects a proper PRACH occasion to transmit PRACH using the beam that is active.
  • the first SSB can be transmitted to normal UEs.
  • the first SSB may have the first periodicity.
  • the second SSB can be forwarded by NCR/RIS to UEs.
  • the periodicity can be different after forwarding.
  • the second SSB may have the second periodicity.
  • the first SSB can correspond to a beam that serves an area with higher traffic.
  • the first SSB may have the first periodicity.
  • the second SSB can correspond to a beam that serves an area with lower traffic.
  • the second SSB may have the second periodicity.
  • the first SSB can correspond to a beam that allows the functionality of beam hopping.
  • the first SSB can have the first periodicity.
  • the second SSB can correspond to a beam that disables the functionality of beam hopping.
  • the second SSB may have the second periodicity.
  • the elements of the sequences can be applied to at least one of PSS, SSS, PBCH, or the whole/entire SS/PBCH blocks (SSB) .
  • the first SSB and the second SSB can be multiplexed in the same time and frequency domain resources with the first sequence and the second sequence, respectively.
  • the UE detects 2 SSBs they may be associated with more than PRACH occasions or preambles.
  • the UE can select one of them and determine the exact PRACH occasion for transmitting PRACH according to the sequence of the selected SSB.
  • the first SSB and the second SSB can be multiplexed in the same time and frequency domain resources with the first sequence and the second sequence, respectively.
  • the UE detects 2 SSBs they may be associated with the same PRACH occasion.
  • the UE can select one of the SSBs and determine the sequence for PRACH transmission according to the sequence of the selected SSB.
  • the mapping ratio can be defined as per the SSB index, e.g., different SSBs may have different mapping ratios.
  • the mapping ratio can be defined as per periodicity, where each periodicity can correspond to one or more SSBs and a mapping ratio.
  • the mapping ratio can be defined as per the SSB list, where each list of SSBs may have a specific mapping ratio. Each list/set can include one or more consecutive or non-consecutive SSB indexes.
  • each SSB may have a specific mapping ratio.
  • the first SSB may have the first mapping ratio N1
  • the second SSB may have the second mapping ratio N2.
  • the SSBs may have different periodicities, e.g., ⁇ SSB 1, 3, 5 ⁇ may have a first periodicity P1, and ⁇ SSB 2, 4, 6 ⁇ may have a second periodicity P2.
  • the SSBs may have the first mapping ratio N1.
  • the SSBs with periodicity P2 the SSBs may have the second mapping ratio P2.
  • each list/set of SSBs may have a specific mapping ratio.
  • restrictions on the network configuration can include the number of FDMed ROs and/or mapping ratio.
  • the network can configure several FDMed ROs.
  • FDMed ROs are associated with different SSBs
  • the network configuration may require that gNB have different reception beams to simultaneously receive the PRACH.
  • the approach may not be applicable for NTN scenarios.
  • four cases are listed to illustrate the meaning of the number of FDMed ROs, mapping ratio (s) , and SSB index (es) . Each rectangle can refer to an RO, and “SSB x” within the rectangle can refer to the associated SSB index (es) .
  • the BS reception beam can associate with one SSB at the same time.
  • the length of the window in number of slots, based on the SCS for Type1-PDCCH CSS set, is provided by ra-ResponseWindow.
  • the UE may not be able to receive any signals outside of the beam’s active time, such that the start and length of the RAR window can be adapted according to the beam’s active time.
  • the RAR window design can limit the window within the active time.
  • the design of the RAR window may include at least one of the following: the window starts after the start of active time; the window starts after the start of active time associated with the selected SSB; the window ends before the end of active time; the window ends before the end of active time associated with the selected SSB; or the length of the window can be adjusted according to the duration of active time. For example, as shown in FIG.
  • the RAR window can start at t0 according to existing standards and end at t1, where t1-t0 is the configured RAR window length, e.g., indicated by ra-ResponseWindow or msgB-ResponseWindow.
  • the RAR window may be adjusted to [t0’ , t1’ ] , where t1’ -t0’ is the duration of active time.
  • the design on the configured grant PUSCH transmission can be extended or adapted to the periodicity of synchronization signals.
  • SSBs are mapped to valid PUSCH occasions.
  • not all PUSCH occasions can be within the beam active time, such that the validation rule is to be revised according to the beam’s active time.
  • the PUSCH occasions require re-validation according to at least one of active/inactive time configurations or synchronization signal configurations.
  • the validation rule for PUSCH occasions can be as follows. In some implementations, not all PUSCH occasions can be within the beam’s active time, such that the validation rule is to be revised according to the beam’s active time. In some implementations, after the mapping between the SSBs and valid PUSCH occasions, the PUSCH occasions require re-validation according to at least one of active/inactive time configurations or synchronization signal configurations. In some approaches, a PUSCH occasion is valid if it does not overlap with a valid PRACH occasion.
  • the PUSCH occasion is validated by a synchronization signal associated with the CG based transmission, for example, this validation is performed after the mapping between the SSBs and valid PUSCH occasions.
  • the PUSCH occasion is validated by a sequence of synchronization signals associated with the CG based transmission, for example, this validation is performed after the mapping between the SSBs and valid PUSCH occasions.
  • the PUSCH occasion is valid if it does not overlap with inactive time.
  • the PUSCH occasion is invalid if it overlaps with inactive time.
  • the PUSCH occasion is valid if the PUSCH occasion is within the active time.
  • the PUSCH occasion is invalid if the PUSCH occasion is not within the active time.
  • the active/inactive time can be associated with at least one of the following: all SSBs, all SSBs configured for the CG transmission, an SSB index, or a list/set of SSB indexes, which can be consecutive or non-consecutive.
  • FIG. 13 illustrates a flow diagram of a method 1300 for supporting transmission or reception of signals according to the adaptive periodicity of a common channel.
  • the method 1300 may be implemented using any of the components and devices detailed herein in conjunction with FIGS. 1–12.
  • the method 1300 may include a wireless communication device determining a resource for transmission or reception of a signal (STEP 1302) .
  • the method 1300 may include the wireless communication device performing the transmission or reception of the signal, according to the resource (STEP 1304) .
  • a wireless communication device e.g., UE can determine a resource for transmission or reception of a signal (STEP 1302) .
  • the wireless communication device can perform the transmission or reception of the signal, according to the resource (STEP 1304) .
  • the wireless communication device can receive a resource configuration (e.g., implicitly or explicitly provides active/inactive time information) from a wireless communication node (e.g., BS) .
  • the wireless communication device can receive the resource configuration via system information (e.g., SIB1, SIB19, MIB) signaling or radio resource control (RRC) signaling.
  • the resource configuration may include at least one of the following: information of at least one type of active or inactive time, or information of at least one synchronization signal (SS) (e.g., SSB) .
  • SS synchronization signal
  • the SS may include at least one of the following: a synchronization signal block, a physical broadcast channel (PBCH) signal, a SS/PBCH block (SSB) , a primary SS, or a secondary SS (SSS) ;
  • the information of the at least one SS may include at least one of the following: at least one SS index (e.g., SSB index) , at least one SS periodicity, at least one SS offset, at least one SS location, or at least one SS pattern; at least one of the SS periodicity, the SS offset, the SS location, or the SS pattern can be configured for a specific SS or SS index, or for a plurality (e.g., or a list/set) of SSes or SS indices; the plurality of SSes or SS indices may include at least one of the following: all SSes or SS indices, a number of consecutive SS indices
  • the information of at least one type of active or inactive time may include at least one of the following: an indication of whether beam hopping is enabled or disabled; an indication of whether a repeater node is used to serve a cell; an indication of whether one or more SSes are disabled or canceled; an index of a configuration of active or inactive time; an indication of one or more periodicities for active or inactive time; an indication of one or more offset values (e.g., frame level, sub-frame level, ms level, slot level, or symbol level) ; or an indication of one or more durations (e.g., frame level, sub-frame level, ms level, slot level, or symbol level) .
  • the occasion for the signal for validation can be from a candidate occasion list/set.
  • the candidate occasion list may include at least one of the following: all occasions for the signal; occasions for the signal after the mapping between at least one index of one or more synchronization signals and at least one occasion for the signal; occasions for the signal that are associated or mapped with at least one index of one or more synchronization signals; occasions for the signal that are associated with at least one index of one or more synchronization signals with first periodicity; or occasions for the signal that are associated with at least one synchronization signal with a first index.
  • the wireless communication device can determine for initial cell selection that half frames with synchronization signal (SS) /physical broadcast channel (PBCH) blocks occur with a periodicity of N frames, where N can be determined according to at least one of the following: a type or capability of the wireless communication device, whether the wireless communication device is served by a satellite, or whether the wireless communication device is served by a repeater node.
  • SS synchronization signal
  • PBCH physical broadcast channel
  • N when the type or capability is normal, N is a first value; when the type or capability includes support for non-terrestrial network (NTN) , N is a second value; when the wireless communication device is not served by a satellite or a repeater node, N is a first value; or when the wireless communication device is served by a satellite or a repeater node, N is a second value, where the first value and the second value are each a respective integer value.
  • N non-terrestrial network
  • the signal may include a random access signal or a physical random access channel (PRACH) transmission; one or more occasions of the signal (e.g., PRACH occasions) can be validated by a synchronization signal associated with the signal; the wireless communication device can determine one or more valid or invalid occasions of the signal according to the resource configuration; or the wireless communication device can determine one or more valid or invalid repetitions of the signal according to the resource configuration.
  • PRACH physical random access channel
  • the signal may include a random access signal or a physical random access channel (PRACH) transmission; one or more occasions of the signal can be validated by a synchronization signal associated with the signal; the wireless communication device can determine one or more valid or invalid occasions of the signal according to at least one location, time period, periodicity, or configuration of the synchronization signal; the wireless communication device can determine one or more valid or invalid repetitions of the signal according to at least one location, time period, periodicity, or configuration of the synchronization signal; at least one synchronization signal in a first time period may have a different periodicity as at least one synchronization signal in a second time period; or at least one synchronization signal with a first index may have a different periodicity as at least one synchronization signal with a second index.
  • PRACH physical random access channel
  • the signal may include a random access response (RAR) .
  • a window for reception of the signal may include at least one of the following: a window that starts after a start of an active time; a window that starts after a start of an active time associated with a selected synchronization signal; a window that ends before an end of the active time; a window that ends before an end of an active time associated with the selected synchronization signal; or a window with a length that is adjusted according to a duration of the active time.
  • the signal may include a configured grant (CG) transmission
  • a physical uplink shared channel (PUSCH) occasion for the signal may include at least one of the following: a PUSCH occasion that is validated by a synchronization signal associated with the signal; a PUSCH occasion that is validated by a sequence of a synchronization signal associated with the signal; a PUSCH occasion that is valid if the PUSCH occasion does not overlap with an inactive time; a PUSCH occasion that is invalid if the PUSCH occasion overlaps with an inactive time; a PUSCH occasion that is valid if the PUSCH occasion is within the active time; or a PUSCH occasion that is invalid if the PUSCH occasion is not within the active time.
  • CG configured grant
  • PUSCH occasion for the signal may include at least one of the following: a PUSCH occasion that is validated by a synchronization signal associated with the signal; a PUSCH occasion that is validated by a sequence of a synchronization signal associated with the signal;
  • the wireless communication node e.g., BS
  • the wireless communication node can determine a resource for transmission or reception of a signal.
  • the wireless communication node can perform the reception or transmission of the signal, according to the resource.
  • any reference to an element herein using a designation such as “first, ” “second, ” and so forth does not generally limit the quantity or order of those elements. Rather, these designations can be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to first and second elements does not mean that only two elements can be employed, or that the first element must precede the second element in some manner.
  • any of the various illustrative logical blocks, modules, processors, means, circuits, methods and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of the two) , firmware, various forms of program or design code incorporating instructions (which can be referred to herein, for convenience, as “software” or a “software module) , or any combination of these techniques.
  • firmware e.g., a digital implementation, an analog implementation, or a combination of the two
  • firmware various forms of program or design code incorporating instructions
  • software or a “software module”
  • IC integrated circuit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the logical blocks, modules, and circuits can further include antennas and/or transceivers to communicate with various components within the network or within the device.
  • a general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine.
  • a processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or multiple microprocessors in conjunction with a DSP core, or any other suitable configuration to perform the functions described herein.
  • Computer-readable media includes both computer storage media and communication media including any medium that can be enabled to transfer a computer program or code from one place to another.
  • a storage media can be any available media that can be accessed by a computer.
  • such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • module refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Additionally, for purpose of discussion, the various modules are described as discrete modules; however, as would be apparent to one of ordinary skill in the art, two or more modules may be combined to form a single module that performs the associated functions according to embodiments of the present solution.
  • memory or other storage may be employed in embodiments of the present solution.
  • memory or other storage may be employed in embodiments of the present solution.
  • any suitable distribution of functionality between different functional units, processing logic elements or domains may be used without detracting from the present solution.
  • functionality illustrated to be performed by separate processing logic elements, or controllers may be performed by the same processing logic element, or controller.
  • references to specific functional units are only references to a suitable means for providing the described functionality, rather than indicative of a strict logical or physical structure or organization.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention concerne des systèmes et des procédés pour prendre en charge l'émission ou la réception de signaux en fonction de la périodicité adaptative d'un canal commun. Un dispositif de communication sans fil peut déterminer une ressource pour l'émission ou la réception d'un signal. Le dispositif de communication sans fil peut effectuer l'émission ou la réception du signal, selon la ressource.
PCT/CN2024/106385 2024-07-19 2024-07-19 Systèmes et procédés pour prendre en charge l'émission ou la réception de signaux selon la périodicité adaptative d'un canal commun Pending WO2025148269A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/106385 WO2025148269A1 (fr) 2024-07-19 2024-07-19 Systèmes et procédés pour prendre en charge l'émission ou la réception de signaux selon la périodicité adaptative d'un canal commun

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PCT/CN2024/106385 WO2025148269A1 (fr) 2024-07-19 2024-07-19 Systèmes et procédés pour prendre en charge l'émission ou la réception de signaux selon la périodicité adaptative d'un canal commun

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EP2741558A2 (fr) * 2012-12-07 2014-06-11 Kabushiki Kaisha Toshiba Dispositif et procédé de communication sans fil
US20220361157A1 (en) * 2017-03-24 2022-11-10 Samsung Electronics Co., Ltd. Apparatus and method for semi-persistent scheduling and power control in wireless communication system

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US20060293043A1 (en) * 2005-06-27 2006-12-28 Nec Corporation Wireless communication network and method for broadcasting high priority information using downlink common channels
EP2741558A2 (fr) * 2012-12-07 2014-06-11 Kabushiki Kaisha Toshiba Dispositif et procédé de communication sans fil
US20220361157A1 (en) * 2017-03-24 2022-11-10 Samsung Electronics Co., Ltd. Apparatus and method for semi-persistent scheduling and power control in wireless communication system

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