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WO2025171566A1 - Commutation de partie de bande passante - Google Patents

Commutation de partie de bande passante

Info

Publication number
WO2025171566A1
WO2025171566A1 PCT/CN2024/077249 CN2024077249W WO2025171566A1 WO 2025171566 A1 WO2025171566 A1 WO 2025171566A1 CN 2024077249 W CN2024077249 W CN 2024077249W WO 2025171566 A1 WO2025171566 A1 WO 2025171566A1
Authority
WO
WIPO (PCT)
Prior art keywords
sbfd
sub
bwp
configuration
bands
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/CN2024/077249
Other languages
English (en)
Inventor
Erika PORTELA LOPES DE ALMEIDA
Nhat-Quang NHAN
Jing Yuan Sun
Guillermo POCOVI
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.)
Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
Nokia Technologies Oy
Original Assignee
Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
Nokia Technologies Oy
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 Nokia Shanghai Bell Co Ltd, Nokia Solutions and Networks Oy, Nokia Technologies Oy filed Critical Nokia Shanghai Bell Co Ltd
Priority to PCT/CN2024/077249 priority Critical patent/WO2025171566A1/fr
Publication of WO2025171566A1 publication Critical patent/WO2025171566A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • 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
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0457—Variable allocation of band or rate

Definitions

  • Various example embodiments of the present disclosure generally relate to the field of telecommunication and in particular, to methods, devices, apparatuses and computer readable storage medium for bandwidth part (BWP) switching.
  • BWP bandwidth part
  • the 5th Generation Mobile Communication Technology (5G) New Radio (NR) currently supports two duplexing modes, namely Frequency Division Duplexing (FDD) for paired bands and Time division duplex (TDD) for unpaired bands.
  • FDD Frequency Division Duplexing
  • TDD Time division duplex
  • the time domain resource may be split between downlink and uplink. Allocation of a limited time duration for the uplink in TDD may result in reduced coverage, increased latency, and reduced capacity. Therefore, a study of sub-band non-overlapping full duplex (SBFD) is required.
  • SBFD sub-band non-overlapping full duplex
  • a first apparatus comprising at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the first apparatus at least to: receive a SBFD configuration from a second apparatus; determine, based on the SBFD configuration, whether an active BWP of the first apparatus contains at least one SBFD sub-band or whether the active BWP of the first apparatus overlaps with one or more SBFD sub-bands; and perform, based on the determination, a SBFD operation by using the SBFD configuration.
  • a second apparatus comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the second apparatus at least to: transmit, to a first apparatus, a SBFD configuration indicating resources allocated for a SBFD operation in at least one BWP or in a carrier, wherein the active BWP of the first apparatus contains one or more SBFD sub-bands in the at least one BWP or overlaps with one or more SBFD sub-bands within the carrier.
  • a method comprises: transmitting, from a second apparatus to a first apparatus, a SBFD configuration indicating resources allocated for a SBFD operation in at least one BWP or in a carrier, wherein the active BWP of the first apparatus contains one or more SBFD sub-bands in the at least one BWP or overlaps with one or more SBFD sub-bands within the carrier.
  • a second apparatus comprises means for transmitting, to a first apparatus, a SBFD configuration indicating resources allocated for a SBFD operation in at least one BWP or in a carrier, wherein the active BWP of the first apparatus contains one or more SBFD sub-bands in the at least one BWP or overlaps with one or more SBFD sub-bands within the carrier.
  • a computer readable medium comprises instructions stored thereon for causing an apparatus to perform at least the method according to the third aspect.
  • a computer readable medium comprises instructions stored thereon for causing an apparatus to perform at least the method according to the fourth aspect.
  • FIG. 1 illustrates an example communication environment in which example embodiments of the present disclosure can be implemented
  • FIG. 2 illustrates an example of SBFD and non-SBFD slots according to some example embodiments of the present disclosure
  • FIG. 3 illustrates a signaling chart illustrating an example of process according to some example embodiments of the present disclosure
  • FIG. 5 illustrates a flowchart illustrating an example of process according to some example embodiments of the present disclosure
  • FIG. 6 illustrates a flowchart illustrating an example of process according to some example embodiments of the present disclosure
  • FIG. 7 illustrates a flowchart of a method implemented at a first apparatus according to some example embodiments of the present disclosure
  • FIG. 8 illustrates a flowchart of a method implemented at a second apparatus according to some example embodiments of the present disclosure
  • references in the present disclosure to “one embodiment, ” “an embodiment, ” “an example embodiment, ” and the like indicate that the embodiment described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
  • circuitry may refer to one or more or all of the following:
  • circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware.
  • circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
  • the term “communication network” refers to a network following any suitable communication standards, such as New Radio (NR) , Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , Narrow Band Internet of Things (NB-IoT) and so on.
  • NR New Radio
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • NB-IoT Narrow Band Internet of Things
  • the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) , the sixth generation (6G) communication protocols, and/or any other protocols either currently known or to be developed in the future.
  • Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned system.
  • the term “network device” refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom.
  • the network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , an NR NB (also referred to as a gNB) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, an Integrated Access and Backhaul (IAB) node, a low power node such as a femto, a pico, a non-terrestrial network (NTN) or non-ground network device such as a satellite network device, a low earth orbit (LEO) satellite and a geosynchronous earth orbit (GEO) satellite, an aircraft network device, and so forth, depending on the applied terminology and technology
  • radio access network (RAN) split architecture comprises a Centralized Unit (CU) and a Distributed Unit (DU) at an IAB donor node.
  • An IAB node comprises a Mobile Terminal (IAB-MT) part that behaves like a UE toward the parent node, and a DU part of an IAB node behaves like a base station toward the next-hop IAB node.
  • IAB-MT Mobile Terminal
  • the terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA) , portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , USB dongles, smart devices, wireless customer-premises equipment (CPE) , an Internet of Things (IoT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications (e.g., remote surgery) , an industrial device and applications (e.g., a robot and/or other wireless devices operating in an industrial and/or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and/
  • the terminal device may also correspond to a Mobile Termination (MT) part of an IAB node (e.g., a relay node) .
  • MT Mobile Termination
  • IAB node e.g., a relay node
  • the terms “terminal device” , “communication device” , “terminal” , “user equipment” and “UE” may be used interchangeably.
  • the term “resource, ” “transmission resource, ” “resource block, ” “physical resource block” (PRB) , “uplink resource, ” or “downlink resource” may refer to any resource for performing a communication, for example, a communication between a terminal device and a network device, such as a resource in time domain, a resource in frequency domain, a resource in space domain, a resource in code domain, or any other combination of the time, frequency, space and/or code domain resource enabling a communication, and the like.
  • a resource in both frequency domain and time domain will be used as an example of a transmission resource for describing some example embodiments of the present disclosure. It is noted that example embodiments of the present disclosure are equally applicable to other resources in other domains.
  • FIG. 1 shows an example communication network 100 in which embodiments of the present disclosure may be implemented.
  • the communication network 100 may include a first apparatus 110.
  • the first apparatus 110 may also be referred to as a UE or a terminal device.
  • the communication network 100 may include any suitable number of network devices and terminal devices.
  • links from the second apparatus 120 to the first apparatus 110 may be referred to as a downlink (DL)
  • links from the first apparatus 110 to the second apparatus 120 may be referred to as an uplink (UL)
  • the second apparatus 120 is a transmitting (TX) device (or a transmitter)
  • the first apparatus 110 is a receiving (RX) device (or receiver)
  • the first apparatus 110 is a TX device (or transmitter)
  • the second apparatus 120 is a RX device (or a receiver) .
  • Communications in the communication environment 100 may be implemented according to any proper communication protocol (s) , includes, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) , 5G, the sixth generation (6G) , and the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • IEEE Institute for Electrical and Electronics Engineers
  • 5G NR currently supports two duplexing modes: FDD for paired bands and TDD for unpaired bands.
  • TDD the time domain resource is split between downlink and uplink. Allocation of a limited time duration for the uplink in TDD would result in reduced coverage, increased latency, and reduced capacity.
  • 3GPP conducted a study item on the evolution of duplexing operation in NR that addresses the challenges above.
  • One of the main objectives of the study item is to allow simultaneous DL and UL transmission on different physical resource blocks (RBs) /sub-bands within an unpaired wideband NR cell, which is referred to as SBFD.
  • RBs physical resource blocks
  • a guardband is expected to be placed between DL and UL RBs. This provides better isolation between UL and DL transmissions and is expected to be essential for reducing the impact of the self-interference (due to gNB’s own DL transmissions and the gNB’s own UL reception) as well as cross-link interference (CLI) between UE to UE links, and gNB to gNB links.
  • CLI cross-link interference
  • the present disclosure proposes a mechanism for BWP switching.
  • the second apparatus 120 transmits, to a first apparatus 110, a SBFD configuration indicating resources allocated for a SBFD operation.
  • the first apparatus 110 determines, based on the SBFD configuration, whether an active BWP of the first apparatus contains at least one SBFD sub-band or whether the active BWP of the first apparatus overlaps with one or more SBFD sub-bands and performs, based on the determination, a SBFD operation by using the SBFD configuration.
  • the solution of the present disclosure proposes a fast switching from SBFD and legacy TDD operations by leveraging the existing BWP switch framework to enable /disable the SBFD UL sub-band.
  • FIG. 3 shows a signaling chart 300 for communication according to some example embodiments of the present disclosure.
  • the signaling chart 300 involves the first apparatus 110 and the second apparatus 120.
  • FIG. 1 and FIG. 2 For the purpose of discussion, reference is made to FIG. 1 and FIG. 2 to describe the signaling chart 300.
  • the second apparatus transmits (302) SBFD configuration to the first apparatus 110.
  • the SBFD configuration includes a time domain indication indicating a location of SBFD resources in a time domain and/or a frequency domain indication indicating a location of SBFD resources in a frequency domain.
  • the time domain indication may contain the TDD pattern to be used by a UE when SBFD is enabled (SBFD-UL-DL-Config) , in addition to the TDD pattern configuration already indicated for TDD UEs (TDD-UL-DL-Config) .
  • the SBFD time domain configuration can be dedicated to each UE or common to all SBFD aware UEs in this cell. In one example, it may consist of a sequence of different symbol or slot types e.g., DXXXUDDDSU, where D, U and X are respectively downlink, uplink and SBFD (mixed UL and DL) slots, with each slot consisting of 14 symbols.
  • the SBFD time domain configuration may also be provided with symbol-level resolution.
  • the frequency domain indication may contain information related to the location of the SBFD UL sub-band, and SBFD DL sub-bands and/or guardbands.
  • the SBFD configuration may be configured per BWP level. In another alternative, the SBFD configuration may be configured per carrier level. For both alternative, the first apparatus 110 may obtain a time-domain SBFD configuration, additionally to a frequency-domain SBFD configuration.
  • the first apparatus 110 may determine (304) whether the SBFD operation is enabled in the active BWP of the first apparatus 110. In other words, the first apparatus 110 may determine whether the first apparatus 110 operates in a SBFD mode in the active BWP of the first apparatus 110.
  • the second apparatus 120 may further transmit (306) a BWP switch command to the first apparatus 110.
  • the first apparatus 110 determines (308) whether a fast BWP switching is to be performed based on, e.g., a center frequency or a subcarrier spacing of the indicated BWP indicated in the BWP switch command.
  • the SBFD configuration may be configured per BWP level or per carrier level.
  • the first apparatus 110 can be configured with two overlapping BWPs in the frequency domain.
  • a first BWP may be configured in the legacy manner and the second BWP may additionally contain the SBFD sub-bands configuration.
  • the first apparatus 110 When the first BWP is activated, the first apparatus 110 operates in TDD mode, so it also assumes that the TDD time configuration (TDD-UL-DL-Config) is to be used.
  • TDD time configuration TDD-UL-DL-Config
  • SBFD-UL-DL-Config SBFD-UL-DL-Config
  • At least the frequency domain indication of the UL sub-bands is done per BWP.
  • the first apparatus 110 receives a SBFD configuration for each BWP and determines whether SBFD is enabled or not in an active BWP indicated by second apparatus 120, wherein the determination may be performed as follows:
  • the first apparatus 110 may determine that SBFD operation is enabled.
  • the first apparatus 110 may, at block 415, apply the SBFD time and frequency domain configuration and at block 425, operate in SBFD mode.
  • the first apparatus 110 may determine that SBFD operation is not enabled.
  • the first apparatus 110 may, at block 420, apply normal BWP configuration and TDD time-domain configuration and at block 430, operate in TDD mode as a legacy UE (as it does not know the position of UL sub-band) .
  • a SBFD configuration may contain both time and frequency domain indication or only frequency domain indication.
  • time domain indication may be commonly configured and applicable to all BWPs.
  • BWPs may be configured with the same frequency domain information (in terms of starting RB, bandwidth and subcarrier spacing (SCS) ) , but differentiate whether SBFD is active or not.
  • SCS subcarrier spacing
  • the network may ensure that legacy UEs are not allocated in the UL sub-band during SBFD symbols. It is to be understood that in case there are no UEs with active UL transmission in the UL sub-band and/or operating in the BWP configured with SBFD mode, the second apparatus 120 may also schedule the UE in the DL direction in resources overlapping with the UL sub-band; this is up to second apparatus 120 scheduler implementation.
  • the network sends a BWP switch command to the UEs that are in a further BWP (i.e., the second BWP as mentioned above) .
  • a BWP switch command By receiving the BWP switch command, the UEs assume the TDD pattern DDDSUDDDSU. During the BWP switch delay, the UEs are not expected to be scheduled.
  • the first apparatus 110 may receive a BWP switch command from the second apparatus 120.
  • the first apparatus 110 may determine whether a fast BWP switching (shorter switching time compared to legacy) is to be applied.
  • the active BWP switch can be done by means of DCI or a RRC reconfiguration message. That is, the first apparatus 110 may receive the BWP switch command via a DCI or an RRC message.
  • the DCI based active BWP indication may have a short delay.
  • the network would need to do an active BWP switch to all UEs that are in BWPs in which SBFD is enabled.
  • the active BWP switch delay usually takes into account the delay for the radio frequency (RF) retuning and filtering at the UE. If the BWP switch is done between BWPs that have the same center frequency, SCS and bandwidth, it can be expected that the BWP switching delay is shorter.
  • RF radio frequency
  • the first apparatus 110 may also obtain a dedicated configuration with SBFD-specific parameters for BWPs in which SBFD is enabled.
  • this configuration can include PUCCH configuration (power control information, DL data to UL acknowledgement and others) and PUSCH configuration, for example.
  • PUCCH configuration power control information, DL data to UL acknowledgement and others
  • PUSCH configuration for example.
  • PUCCH configuration power control information, DL data to UL acknowledgement and others
  • PUSCH configuration for example.
  • PUCCH configuration power control information, DL data to UL acknowledgement and others
  • PUSCH configuration for example.
  • PDCCH configuration power control information, DL data to UL acknowledgement and others
  • PUSCH configuration for example.
  • PDCCH configuration power control information, DL data to UL acknowledgement and others
  • PUSCH configuration for example.
  • PDCCH configuration power control information, DL data to UL acknowledgement and others
  • PUSCH configuration for example.
  • PDCCH configuration power control information, DL data to UL
  • the frequency domain and time domain indication are done separately from the BWP configuration, e.g. at carrier level.
  • FIG. 5 illustrates a flowchart illustrating an example of process 500 according to some example embodiments of the present disclosure. For the purpose of discussion, the process 500 will be described from the perspective of the first apparatus 110 in FIG. 1.
  • SBFD frequency configuration is cell-specific or signaled separately from the BWP configuration.
  • the second apparatus 120 can use 1 bit to enable or disable SBFD in BWPs that overlap with the UL sub-band. That is, the first apparatus 110 may evaluate whether SBFD is enabled or disabled by assessing whether the active BWP overlaps with the UL sub-band and/or whether SBFD is enabled in this BWP.
  • the first apparatus 110 uses the SBFD time domain configuration (SBFD-UL-DL-Config) .
  • SBFD-UL-DL-Config the first apparatus 110 assumes the TDD time domain configuration (TDD-UL-DL-Config) .
  • the first apparatus 110 may receive a BWP switch command from the second apparatus 120.
  • the first apparatus 110 may determine whether a fast BWP switching (shorter switching time compared to legacy) is to be applied.
  • the process 600 shows another option where an additional indication is received by the first apparatus 110 from the second apparatus 120.
  • the first apparatus 110 further receives, in each BWP that overlaps with the SBFD sub-band (e.g., UL sub-band) , an additional indication informing the first apparatus 110 whether SBFD operation is enabled or not in the BWP.
  • the first apparatus 110 may obtain the additional indication via a MAC-CE or via a RRC configuration message.
  • the first apparatus 110 applies the SBFD time and frequency domain configuration (considering the DL and UL sub-bands within the BWP) and considers that SBFD is used in the TDD symbols indicated as SBFD.
  • the first apparatus 110 operates in SBFD mode.
  • the first apparatus 110 may operate in TDD mode according to the configured time-domain pattern (TDD-UL-DL-Config) .
  • the first apparatus 110 can still use the knowledge of the UL sub-bands for different purposes.
  • the first apparatus 110 is not expected to transmit/receive (or scheduled to transmit/receive) on the SBFD UL sub-band in the BWP, e.g., the first apparatus 110 does not expect to be scheduled with a transmission on the UL sub-band that overlaps with the BWP.
  • the first apparatus 110 can also use the knowledge of the UL sub-bands to e.g. perform rate matching of DL signals to exclude the RBs overlapping with the UL sub-band from the signaled DL allocation.
  • the first apparatus 110 applies legacy TDD operation.
  • the first apparatus 110 may also determine, at block 635, whether an indication for enabling or disabling the SBFD operation is received. If so, the process 600 may be performed from block 610 again. If not, the first apparatus 110 may determine whether a BWP switch command is received from the second apparatus 120, at block 640 and further determine whether a fast BWP switching is to be applied, which has been described with reference to FIGS. 4 and 5 and will be omitted here.
  • the UE is allowed to do a fast transition between a TDD operation and an SBFD operation, by doing an active BWP switch and to be configured/reconfigured with SBFD without an RRC reconfiguration and without the need to support a dynamic version of SBFD.
  • the NW can also configure different parameters for the signals and channels in SBFD symbols and non-SBFD symbols, such as search spaces (PDCCH) , transmit power control for PUSCH, PUCCH, SRS, rate matching pattern, resource block group size (PDSCH) and so on.
  • search spaces PUCCH
  • SRS search spaces
  • PDSCH resource block group size
  • FIG. 7 shows a flowchart of an example method 700 implemented at a first apparatus in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the method 700 will be described from the perspective of the first apparatus 110 in FIG. 1.
  • the first apparatus 110 performs, based on the determination, a SBFD operation by using the SBFD configuration.
  • the method 700 further comprises: receiving the SBFD configuration per BWP level or per carrier level.
  • the SBFD configuration includes at least one of: a time domain indication indicating a location of SBFD resources in a time domain, or a frequency domain indication indicating a location of SBFD resources in a frequency domain.
  • the SBFD resources comprises: one or more SBFD uplink sub-bands consisting of a set of resource blocks for uplink transmission, and/or one or more guardbands of a set of resource blocks for neither uplink or downlink transmission, and/or one or more SBFD downlink sub-bands consisting of a set of resource blocks for downlink transmission.
  • the first apparatus is caused to: in accordance with a determination that the active BWP contains the at least one SBFD sub-band, determining that the SBFD operation is enabled in the active BWP; and performing the SBFD operation by using the SBFD configuration.
  • the method 700 further comprises: receiving, from the second apparatus, a dedicated configuration of at least one SBFD-specific parameter for one or more BWPs in which the SBFD operation is enabled.
  • the method 700 further comprises: in accordance with a determination that the active BWP of the first apparatus overlaps with one or more SBFD sub-bands, performing the SBFD operation by using the SBFD configuration in the one or more SBFD sub-bands.
  • the method 700 further comprises: obtaining, from the second apparatus, an additional indication whether the SBFD operation is enabled or not in the active BWP; in accordance with a determination that the active BWP of the first apparatus overlaps with one or more SBFD sub-bands, determining, based on the additional indication, whether the SBFD operation is enabled in the active BWP; and in accordance with a determination, based on the additional indication, that the SBFD operation is enabled in the active BWP, perform the SBFD operation by using the SBFD configuration.
  • the method 700 further comprises: obtaining the additional indication via a medium access control-control element, MAC-CE or via Radio Resource Control, RRC, configuration.
  • the method 700 further comprises: in accordance with a determination, based on the additional indication, that the SBFD operation is not enabled in the active BWP, operate in a time division duplexing, TDD, mode that is different from a time-domain pattern configured for the SBFD operation while avoiding a transmission or a reception on one or more SBFD uplink sub-bands, or receiving a downlink transmission on one or more SBFD downlink sub-bands or one or more SBFD uplink sub-bands.
  • TDD time division duplexing
  • the method 700 further comprises: receiving, from the second apparatus, a BWP switch command; and in accordance with a determination that an indicated BWP indicated in the BWP switch command has a same center frequency and/or a same subcarrier spacing with the active BWP, performing a fast BWP switching based on the BWP switch command.
  • the method 700 further comprises: receiving the BWP switch command via a downlink control information, DCI, or an RRC message.
  • the first apparatus comprises a terminal device and the second apparatus comprises a network device.
  • FIG. 8 shows a flowchart of an example method 800 implemented at a second apparatus in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the method 800 will be described from the perspective of the second apparatus 120 in FIG. 1.
  • the second apparatus 120 transmits, to a first apparatus, a SBFD configuration indicating resources allocated for a SBFD operation in at least one BWP or in a carrier, wherein the active BWP of the first apparatus contains one or more SBFD sub-bands in the at least one BWP or overlaps with one or more SBFD sub-bands within the carrier.
  • the SBFD configuration includes at least one of: a time domain indication indicating a location of SBFD resources in a time domain, or a frequency domain indication indicating a location of SBFD resources in a frequency domain.
  • the SBFD resources comprises: one or more SBFD uplink sub-bands consisting of a set of resource blocks for uplink transmission, and/or one or more guardbands of a set of resource blocks for neither uplink or downlink transmission, and/or one or more SBFD downlink sub-bands consisting of a set of resource blocks for downlink transmission.
  • the method 800 further comprises: transmitting, to the first apparatus, a dedicated configuration of at least one SBFD-specific parameter for one or more BWPs in which the SBFD operation is enabled.
  • the method 800 further comprises: transmitting, to the first apparatus, an additional indication whether the SBFD operation is enabled or not in each BWP overlapping with the one or more SBFD sub-bands.
  • the method 800 further comprises: transmitting the additional indication via a medium access control-control element, MAC-CE or via Radio Resource Control, RRC, configuration.
  • the method 800 further comprises: transmitting, to the first apparatus, a BWP switch command via a downlink control information, DCI, or an RRC message.
  • the first apparatus comprises a terminal device and the second apparatus comprises a network device.
  • a first apparatus capable of performing any of the method 700 may comprise means for performing the respective operations of the method 700.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the first apparatus may be implemented as or included in the first apparatus 110 in FIG. 1.
  • the first apparatus comprises means for receiving a SBFD configuration from a second apparatus; means for determining, based on the SBFD configuration, whether an active BWP of the first apparatus contains at least one SBFD sub-band or whether the active BWP of the first apparatus overlaps with one or more SBFD sub-bands; and means for performing, based on the determination, a SBFD operation by using the SBFD configuration.
  • the first apparatus further comprises: means for receiving the SBFD configuration per BWP level or per carrier level.
  • the SBFD configuration includes at least one of: a time domain indication indicating a location of SBFD resources in a time domain, or a frequency domain indication indicating a location of SBFD resources in a frequency domain.
  • the SBFD resources comprises: one or more SBFD uplink sub-bands consisting of a set of resource blocks for uplink transmission, and/or one or more guardbands of a set of resource blocks for neither uplink or downlink transmission, and/or one or more SBFD downlink sub-bands consisting of a set of resource blocks for downlink transmission.
  • the first apparatus further comprises: means for in accordance with a determination that the active BWP contains the at least one SBFD sub-band, determining that the SBFD operation is enabled in the active BWP; and means for performing the SBFD operation by using the SBFD configuration.
  • the first apparatus further comprises: means for receiving, from the second apparatus, a dedicated configuration of at least one SBFD-specific parameter for one or more BWPs in which the SBFD operation is enabled.
  • the first apparatus further comprises: means for in accordance with a determination that the active BWP of the first apparatus overlaps with one or more SBFD sub-bands, performing the SBFD operation by using the SBFD configuration in the one or more SBFD sub-bands.
  • the first apparatus further comprises: means for obtaining, from the second apparatus, an additional indication whether the SBFD operation is enabled or not in the active BWP; means for in accordance with a determination that the active BWP of the first apparatus overlaps with one or more SBFD sub-bands, determining, based on the additional indication, whether the SBFD operation is enabled in the active BWP; and means for in accordance with a determination, based on the additional indication, that the SBFD operation is enabled in the active BWP, perform the SBFD operation by using the SBFD configuration.
  • the first apparatus further comprises: means for obtaining the additional indication via a medium access control-control element, MAC-CE or via Radio Resource Control, RRC, configuration.
  • MAC-CE medium access control-control element
  • RRC Radio Resource Control
  • the first apparatus further comprises: means for in accordance with a determination, based on the additional indication, that the SBFD operation is not enabled in the active BWP, operate in a time division duplexing, TDD, mode that is different from a time-domain pattern configured for the SBFD operation while avoiding a transmission or a reception on one or more SBFD uplink sub-bands, or receiving a downlink transmission on one or more SBFD downlink sub-bands or one or more SBFD uplink sub-bands.
  • TDD time division duplexing
  • the first apparatus further comprises: means for receiving, from the second apparatus, a BWP switch command; and means for in accordance with a determination that an indicated BWP indicated in the BWP switch command has a same center frequency and/or a same subcarrier spacing with the active BWP, performing a fast BWP switching based on the BWP switch command.
  • the first apparatus further comprises: means for receiving the BWP switch command via a downlink control information, DCI, or an RRC message.
  • the first apparatus comprises a terminal device and the second apparatus comprises a network device.
  • the first apparatus further comprises means for performing other operations in some example embodiments of the method 700 or the first apparatus 110.
  • the means comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the performance of the first apparatus.
  • a second apparatus capable of performing any of the method 800 may comprise means for performing the respective operations of the method 800.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the second apparatus may be implemented as or included in the second apparatus 120 in FIG. 1.
  • the second apparatus comprises means for transmitting, to a first apparatus, a SBFD configuration indicating resources allocated for a SBFD operation in at least one BWP or in a carrier, wherein the active BWP of the first apparatus contains one or more SBFD sub-bands in the at least one BWP or overlaps with one or more SBFD sub-bands within the carrier.
  • the SBFD configuration includes at least one of: a time domain indication indicating a location of SBFD resources in a time domain, or a frequency domain indication indicating a location of SBFD resources in a frequency domain.
  • the SBFD resources comprises: one or more SBFD uplink sub-bands consisting of a set of resource blocks for uplink transmission, and/or one or more guardbands of a set of resource blocks for neither uplink or downlink transmission, and/or one or more SBFD downlink sub-bands consisting of a set of resource blocks for downlink transmission.
  • the second apparatus further comprises: means for transmitting, to the first apparatus, a dedicated configuration of at least one SBFD-specific parameter for one or more BWPs in which the SBFD operation is enabled.
  • the second apparatus further comprises: means for transmitting, to the first apparatus, an additional indication whether the SBFD operation is enabled or not in each BWP overlapping with the one or more SBFD sub-bands.
  • the second apparatus further comprises: means for transmitting the additional indication via a medium access control-control element, MAC-CE or via Radio Resource Control, RRC, configuration.
  • MAC-CE medium access control-control element
  • RRC Radio Resource Control
  • the second apparatus further comprises: means for transmitting, to the first apparatus, a BWP switch command via a downlink control information, DCI, or an RRC message.
  • the first apparatus comprises a terminal device and the second apparatus comprises a network device.
  • the second apparatus further comprises means for performing other operations in some example embodiments of the method 800 or the second apparatus 120.
  • the means comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the performance of the second apparatus.

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

Abstract

Des exemples de modes de réalisation de la présente divulgation concernent des procédés, des dispositifs, des appareils et un support de stockage lisible par ordinateur permettant une commutation d'une partie de bande passante (BWP). Le procédé comprend les étapes consistant à : au niveau d'un premier appareil, recevoir d'un second appareil une configuration de duplex intégral de sous-bande (SBFD) sans chevauchement ; sur la base de la configuration de SBFD, déterminer si une partie de bande passante active du premier appareil contient au moins une sous-bande de SBFD ou si la BWP active du premier appareil chevauche une ou plusieurs sous-bandes de SBFD ; et, sur la base de la détermination, effectuer une opération de SBFD à l'aide de la configuration de SBFD.
PCT/CN2024/077249 2024-02-15 2024-02-15 Commutation de partie de bande passante Pending WO2025171566A1 (fr)

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PCT/CN2024/077249 WO2025171566A1 (fr) 2024-02-15 2024-02-15 Commutation de partie de bande passante

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/077249 WO2025171566A1 (fr) 2024-02-15 2024-02-15 Commutation de partie de bande passante

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Publication number Priority date Publication date Assignee Title
CN116724641A (zh) * 2023-03-28 2023-09-08 北京小米移动软件有限公司 资源确定、资源指示方法及装置
US20230292294A1 (en) * 2022-03-14 2023-09-14 Samsung Electronics Co., Ltd. Uplink transmission in full-duplex systems
CN116918434A (zh) * 2021-03-12 2023-10-20 高通股份有限公司 用于全双工通信的先听后说技术
US20230421222A1 (en) * 2022-09-28 2023-12-28 Debdeep CHATTERJEE Subband reporting for full duplex operation
US20240014995A1 (en) * 2022-09-27 2024-01-11 Debdeep CHATTERJEE Timing for non-overlapping sub-band full duplex (sbfd) operations in 5g nr
CN117500075A (zh) * 2022-07-22 2024-02-02 中国移动通信有限公司研究院 时频资源指示方法、装置、终端、网络设备及存储介质

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116918434A (zh) * 2021-03-12 2023-10-20 高通股份有限公司 用于全双工通信的先听后说技术
US20230292294A1 (en) * 2022-03-14 2023-09-14 Samsung Electronics Co., Ltd. Uplink transmission in full-duplex systems
CN117500075A (zh) * 2022-07-22 2024-02-02 中国移动通信有限公司研究院 时频资源指示方法、装置、终端、网络设备及存储介质
US20240014995A1 (en) * 2022-09-27 2024-01-11 Debdeep CHATTERJEE Timing for non-overlapping sub-band full duplex (sbfd) operations in 5g nr
US20230421222A1 (en) * 2022-09-28 2023-12-28 Debdeep CHATTERJEE Subband reporting for full duplex operation
CN116724641A (zh) * 2023-03-28 2023-09-08 北京小米移动软件有限公司 资源确定、资源指示方法及装置

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