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WO2025194983A1 - Procédé et appareil associés à un prach dans un nœud utilisé pour une communication sans fil - Google Patents

Procédé et appareil associés à un prach dans un nœud utilisé pour une communication sans fil

Info

Publication number
WO2025194983A1
WO2025194983A1 PCT/CN2025/071451 CN2025071451W WO2025194983A1 WO 2025194983 A1 WO2025194983 A1 WO 2025194983A1 CN 2025071451 W CN2025071451 W CN 2025071451W WO 2025194983 A1 WO2025194983 A1 WO 2025194983A1
Authority
WO
WIPO (PCT)
Prior art keywords
prach
prach opportunity
full
duplex
symbol
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/CN2025/071451
Other languages
English (en)
Chinese (zh)
Inventor
胡杨
武露
张晓博
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.)
Honor Device Co Ltd
Original Assignee
Honor Device Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honor Device Co Ltd filed Critical Honor Device Co Ltd
Publication of WO2025194983A1 publication Critical patent/WO2025194983A1/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access

Definitions

  • the present application relates to a transmission method and apparatus in a wireless communication system, and in particular to a transmission method and apparatus for wireless signals in a wireless communication system supporting a cellular network.
  • 3GPP 3rd Generation Partner Project
  • SBFD SubBand non-overlapping Full Duplex
  • gNB NR Node B
  • the first parameter group includes at least one random access parameter for full-duplex symbols; when the first parameter group is configured, the candidate PRACH opportunity set is the first PRACH opportunity set or the second PRACH opportunity set, the first PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol, and the PRACH opportunities in the second PRACH opportunity set are all PRACH opportunities in non-full-duplex symbols; when the first parameter group is not configured, the candidate PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol and at least one PRACH opportunity in the non-full-duplex symbol.
  • the problem to be solved by the present application includes: how to determine a PRACH opportunity for PRACH transmission in a system configured with full-duplex symbols.
  • the problem to be solved by the present application includes: how to enhance the selection of PRACH transmission resources through flexible configuration.
  • the benefits of the above method include: improving configuration flexibility and facilitating enhanced random access performance.
  • the above method has the following benefits: it is facilitating the use of different methods to determine the candidate PRACH opportunity set for different scenarios, thereby improving the adaptability of PRACH transmission to the transmission scenario and optimizing PRACH resource allocation.
  • the above method is characterized in that:
  • the first node selects the first PRACH opportunity set or the second PRACH opportunity set as the candidate PRACH opportunity set according to a first probability distribution.
  • the benefits of the above method include: being helpful in reducing UE processing complexity.
  • the advantages of the above method include: good compatibility with existing 3GPP protocols and small workload for standardization.
  • the above method is characterized in that:
  • the PRACH opportunities in the full-duplex symbols and the PRACH opportunities in the non-full-duplex symbols in the candidate PRACH opportunity set both depend on the configuration of the first random access parameter, and the first random access parameter is a parameter for configuring the PRACH opportunities.
  • the benefits of the above method include: improving the utilization efficiency of configuration parameters and saving signaling overhead.
  • the above method is characterized in that:
  • the first parameter group is not configured, and the at least part of the PRACH opportunities in the candidate PRACH opportunity set include at least one PRACH opportunity in a full-duplex symbol and at least one PRACH opportunity in a non-full-duplex symbol.
  • the above method is characterized in that:
  • the first PRACH opportunity is randomly selected with equal probability from the at least part of the PRACH opportunities in the candidate PRACH opportunity set.
  • the characteristics of the above method include: when the first parameter group is not configured, allowing at least part of the PRACH opportunities in the candidate PRACH opportunity set to include at least one PRACH opportunity in a full-duplex symbol and at least one PRACH opportunity in a non-full-duplex symbol; such characteristics are conducive to providing more PRACH opportunities (in different types of symbols) for random access to choose from, thereby reducing the probability of random access collision.
  • the above method is characterized in that:
  • the PRACH opportunities in the first PRACH opportunity set are all PRACH opportunities in full-duplex symbols.
  • the benefits of the above method include: it is helpful to reduce the complexity of system design.
  • the above method is characterized in that it includes:
  • this symbol when a symbol is indicated as a downlink by the uplink and downlink TDD configuration signaling and can be used for uplink transmission, this symbol is a full-duplex symbol; when a symbol is indicated as an uplink by the uplink and downlink TDD configuration signaling, this symbol is not a full-duplex symbol; when a symbol is not a full-duplex symbol, this symbol is a non-full-duplex symbol.
  • the above method is characterized in that:
  • the uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.
  • the present application discloses a method in a second node for wireless communication, comprising:
  • the first parameter group includes at least one random access parameter for full-duplex symbols; when the first parameter group is configured, the candidate PRACH opportunity set is the first PRACH opportunity set or the second PRACH opportunity set, the first PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol, and the PRACH opportunities in the second PRACH opportunity set are all PRACH opportunities in non-full-duplex symbols; when the first parameter group is not configured, the candidate PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol and at least one PRACH opportunity in the non-full-duplex symbol.
  • the above method is characterized in that:
  • the candidate PRACH opportunity set is a result of being selected from the first PRACH opportunity set and the second PRACH opportunity set according to a first probability distribution.
  • the above method is characterized in that:
  • the first parameter group is not configured, and the at least part of the PRACH opportunities in the candidate PRACH opportunity set include at least one PRACH opportunity in a full-duplex symbol and at least one PRACH opportunity in a non-full-duplex symbol.
  • the above method is characterized in that:
  • the first PRACH opportunity is randomly selected with equal probability from the at least part of the PRACH opportunities in the candidate PRACH opportunity set.
  • the above method is characterized in that:
  • the PRACH opportunities in the first PRACH opportunity set are all PRACH opportunities in full-duplex symbols.
  • the above method is characterized in that it includes:
  • this symbol when a symbol is indicated as a downlink by the uplink and downlink TDD configuration signaling and can be used for uplink transmission, this symbol is a full-duplex symbol; when a symbol is indicated as an uplink by the uplink and downlink TDD configuration signaling, this symbol is not a full-duplex symbol; when a symbol is not a full-duplex symbol, this symbol is a non-full-duplex symbol.
  • the above method is characterized in that:
  • the uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.
  • the present application discloses a first node used for wireless communication, comprising:
  • a first transmitter transmits a PRACH using a first PRACH opportunity, where the first PRACH opportunity is randomly selected with equal probability from at least some of the PRACH opportunities in the candidate PRACH opportunity set;
  • the first parameter group includes at least one random access parameter for full-duplex symbols; when the first parameter group is configured, the candidate PRACH opportunity set is the first PRACH opportunity set or the second PRACH opportunity set, the first PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol, and the PRACH opportunities in the second PRACH opportunity set are all PRACH opportunities in non-full-duplex symbols; when the first parameter group is not configured, the candidate PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol and at least one PRACH opportunity in the non-full-duplex symbol.
  • the present application discloses a second node used for wireless communication, comprising:
  • a second receiver receiving a PRACH in a first PRACH opportunity, where the first PRACH opportunity is randomly selected with equal probability from at least some of the PRACH opportunities in the candidate PRACH opportunity set;
  • the first parameter group includes at least one random access parameter for full-duplex symbols; when the first parameter group is configured, the candidate PRACH opportunity set is the first PRACH opportunity set or the second PRACH opportunity set, the first PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol, and the PRACH opportunities in the second PRACH opportunity set are all PRACH opportunities in non-full-duplex symbols; when the first parameter group is not configured, the candidate PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol and at least one PRACH opportunity in the non-full-duplex symbol.
  • FIG1 shows a processing flow chart of a first node according to an embodiment of the present application
  • FIG2 shows a schematic diagram of a network architecture according to an embodiment of the present application
  • FIG3 shows a schematic diagram of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application
  • FIG4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application
  • FIG5 shows a signal transmission flow chart according to an embodiment of the present application
  • FIG6 shows a schematic diagram illustrating a candidate PRACH opportunity set when a first parameter group is configured according to an embodiment of the present application
  • FIG7 shows a schematic diagram illustrating a candidate PRACH opportunity set when the first parameter group is not configured according to an embodiment of the present application
  • FIG8 is a schematic diagram illustrating at least some PRACH opportunities in a candidate PRACH opportunity set according to an embodiment of the present application
  • FIG9 shows a schematic diagram illustrating a full-duplex symbol and a non-full-duplex symbol according to an embodiment of the present application
  • FIG10 is a schematic diagram illustrating a first parameter group according to an embodiment of the present application.
  • FIG11 shows a structural block diagram of a processing device in a first node device according to an embodiment of the present application
  • FIG12 shows a structural block diagram of a processing device in a second node device according to an embodiment of the present application.
  • Example 1 illustrates a processing flow chart of a first node according to an embodiment of the present application, as shown in FIG1 .
  • the first node in the present application sends a PRACH using a first PRACH opportunity in step 101.
  • the first PRACH opportunity is randomly selected with equal probability from at least part of the PRACH opportunities in the candidate PRACH opportunity set; the first parameter group includes at least one random access parameter for full-duplex symbols; when the first parameter group is configured, the candidate PRACH opportunity set is the first PRACH opportunity set or the second PRACH opportunity set, the first PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol, and the PRACH opportunities in the second PRACH opportunity set are all PRACH opportunities in non-full-duplex symbols; when the first parameter group is not configured, the candidate PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol and at least one PRACH opportunity in the non-full-duplex symbol.
  • a PRACH opportunity is an opportunity for transmitting a random access channel.
  • a PRACH opportunity is an opportunity for transmitting a random access preamble.
  • a PRACH opportunity belongs to resources configured for PRACH transmission.
  • the using the first PRACH opportunity to send the PRACH includes: using the first PRACH opportunity to send a random access preamble code.
  • the sending of PRACH using the first PRACH opportunity includes: sending a random access preamble code in the first PRACH opportunity.
  • the first node sends PRACH in the time-frequency resources configured for the first PRACH opportunity.
  • the candidate PRACH opportunity set includes multiple PRACH opportunities.
  • the PRACH opportunities in the candidate PRACH opportunity set are all valid PRACH opportunities.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set includes multiple PRACH opportunities.
  • the first PRACH opportunity is a PRACH opportunity in the candidate PRACH opportunity set.
  • the first node determines the candidate PRACH opportunity set.
  • the characteristics of the above method include: the first node needs to first determine the candidate PRACH opportunity set, and determine the first PRACH opportunity based on this; such characteristics are conducive to system optimization for random access resources.
  • the determination of the candidate PRACH opportunity set is related to whether the first parameter group is configured or not.
  • determination of the candidate PRACH opportunity set depends on whether the first parameter group is configured or not.
  • the first node selects between the first PRACH opportunity set and the second PRACH opportunity set, and the candidate PRACH opportunity set is a result of the selection.
  • the first node independently selects the first PRACH opportunity set or the second PRACH opportunity set as the candidate PRACH opportunity set.
  • the advantages of the above method include: high UE processing flexibility.
  • the first node in order to determine the candidate PRACH opportunity set, the first node first selects at least one PRACH opportunity set that can be used for the random access process to be performed from multiple PRACH opportunity sets; when the first parameter group is configured, the at least one PRACH opportunity set includes the first PRACH opportunity set and the second PRACH opportunity set; when the first parameter group is not configured, the at least one PRACH opportunity set is a PRACH opportunity set, and the candidate PRACH opportunity set is the at least one PRACH opportunity set.
  • the step of first selecting the at least one PRACH opportunity set that can be used for the random access procedure to be performed from the multiple PRACH opportunity sets exists or does not exist.
  • each of the multiple PRACH opportunity sets includes multiple PRACH opportunities.
  • each of the multiple PRACH opportunity sets is configurable.
  • the PRACH opportunities in each of the multiple PRACH opportunity sets are configurable.
  • one PRACH opportunity set among the multiple PRACH opportunity sets may be configured to be usable for some random access procedures but unusable for other random access procedures.
  • the first parameter group includes only one parameter.
  • the first parameter group includes multiple parameters.
  • each parameter in the first parameter group is a random access parameter.
  • each parameter in the first parameter group is a random access parameter for full-duplex symbols.
  • the parameter when a parameter is a parameter for configuring a PRACH opportunity in a full-duplex symbol, the parameter is a random access parameter for the full-duplex symbol.
  • the parameter when a parameter configuration is applicable to PRACH transmission on a full-duplex symbol, the parameter is a random access parameter for the full-duplex symbol.
  • the first node receives a signaling including configuration information of one or more parameters in the first parameter group.
  • the first parameter group when at least one parameter in the first parameter group is configured, the first parameter group is configured; when any parameter in the first parameter group is not configured, the first parameter group is not configured.
  • this PRACH opportunity when a PRACH opportunity occupies at least one full-duplex symbol in the time domain, this PRACH opportunity is a PRACH opportunity in a full-duplex symbol; when a PRACH opportunity only occupies a non-full-duplex symbol in the time domain, this PRACH opportunity is a PRACH opportunity in a non-full-duplex symbol.
  • this PRACH opportunity when a PRACH opportunity includes at least one full-duplex symbol in the time domain, this PRACH opportunity is a PRACH opportunity in a full-duplex symbol; when a PRACH opportunity includes only non-full-duplex symbols in the time domain, this PRACH opportunity is a PRACH opportunity in a non-full-duplex symbol.
  • transmission on full-duplex symbols may face stronger interference; for the solution disclosed in this application, the above features are conducive to providing good robustness for PRACH transmission.
  • a PRACH opportunity is either within full-duplex symbols or within non-full-duplex symbols.
  • one PRACH opportunity in a full-duplex symbol is within the full-duplex symbol
  • one PRACH opportunity in a non-full-duplex symbol is within the non-full-duplex symbol.
  • this PRACH opportunity when a PRACH opportunity occupies at least one non-full-duplex symbol in the time domain, this PRACH opportunity is a PRACH opportunity in a non-full-duplex symbol; when a PRACH opportunity occupies only full-duplex symbols in the time domain, this PRACH opportunity is a PRACH opportunity in a full-duplex symbol.
  • this PRACH opportunity when a PRACH opportunity includes at least one non-full-duplex symbol in the time domain, this PRACH opportunity is a PRACH opportunity in a non-full-duplex symbol; when a PRACH opportunity includes only full-duplex symbols in the time domain, this PRACH opportunity is a PRACH opportunity in a full-duplex symbol.
  • a PRACH opportunity is a PRACH opportunity in a full-duplex symbol or a PRACH opportunity in a non-full-duplex symbol, which is viewed from a time domain perspective.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set includes multiple PRACH opportunities.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set is the candidate PRACH opportunity set.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set is a proper subset of the candidate PRACH opportunity set.
  • the first node determines the first PRACH opportunity.
  • the first node selects a first SSB, and at least part of the PRACH opportunities in the candidate PRACH opportunity set are PRACH opportunities corresponding to the first SSB.
  • the first parameter group is configured, and the candidate PRACH opportunity set is the first PRACH opportunity set.
  • the first parameter group is configured, and the candidate PRACH opportunity set is the second PRACH opportunity set.
  • the first parameter group is not configured.
  • the first node first selects the first SSB, then determines the candidate PRACH opportunity set, and then randomly selects the first PRACH opportunity with equal probability from at least part of the PRACH opportunities in the candidate PRACH opportunity set.
  • the first node first determines the candidate PRACH opportunity set, then selects the first SSB, and then randomly selects the first PRACH opportunity with equal probability from at least part of the PRACH opportunities in the candidate PRACH opportunity set.
  • the candidate PRACH opportunity set includes Q PRACH opportunity subsets; each PRACH opportunity subset in the Q PRACH opportunity subsets corresponds to at least one SS/PBCH block index, and the at least part of the PRACH opportunities in the candidate PRACH opportunity set is a PRACH opportunity subset in the Q PRACH opportunity subsets; Q is a configurable positive integer.
  • At least part of the PRACH opportunities in the candidate PRACH opportunity set are continuous PRACH opportunities corresponding to the first SSB.
  • At least part of the PRACH opportunities in the candidate PRACH opportunity set are configured to be mapped to the SS/PBCH block (synchronization signals/physical broadcast channel block, SSB) index of the first SSB.
  • SS/PBCH block synchronization signals/physical broadcast channel block, SSB
  • the at least one PRACH opportunity is a PRACH opportunity corresponding to this SSB.
  • the first node selects the first SSB by itself.
  • the first node measures the SS-RSRP of multiple SSBs; if there is at least one available SSB whose corresponding SS-RSRP is higher than a first threshold, the first SSB is an SSB whose corresponding SS-RSRP is higher than the first threshold; otherwise, the first SSB is an SSB determined by the first node itself; the first threshold is configurable.
  • the plurality of SSBs are configurable.
  • the first parameter group is configured
  • the candidate PRACH opportunity set is the first PRACH opportunity set
  • the multiple SSBs include more than one SSB whose corresponding SS/PBCH block index is mapped to the first PRACH opportunity set.
  • the first parameter group is not configured, and the multiple SSBs include more than one SSB whose corresponding SS/PBCH block index is mapped to the candidate PRACH opportunity set.
  • an available SSB may be used to perform SSB-RSRP measurements.
  • an available SSB is configured to be selected to determine random access resources.
  • the first threshold is configured by RRC signaling.
  • the first threshold is indicated by rsrp-ThresholdSSB.
  • the first threshold is indicated by rsrp-ThresholdSSB-SUL.
  • the first threshold is indicated by rsrp-ThresholdCSI-RS.
  • the first threshold is configured by MAC CE (Medium Access Control layer Control Element).
  • the first node measures the SS-RSRP of multiple SSBs; the first SSB is an SSB with the highest SS-RSRP among the multiple SSBs.
  • the SS-RSRP of an SSB is obtained by measuring at least a portion of the SSB.
  • the SS-RSRP of an SSB is the linear average over the power contributions of the resource elements carrying the secondary synchronization signal in this SSB.
  • the first node selects a first SSB and randomly selects a first random access preamble with medium probability from multiple random access preambles; the first random access preamble is sent in the first PRACH opportunity.
  • random access preamble group B (Random Access Preambles group B) is not configured, and the multiple random access preambles are all random access preambles in random access preamble group A (Random Access Preambles group A).
  • the multiple random access preamble codes are all configured to be mapped to the SS/PBCH block index of the first SSB.
  • the first node selects a first CSI-RS (Channel State Information Reference Signal), and at least part of the PRACH opportunities in the candidate PRACH opportunity set include PRACH opportunities (PRACH occasions) corresponding to the first CSI-RS, and the PRACH opportunities corresponding to the first CSI-RS are PRACH opportunities configured for performing non-contention random access when the candidate beam identified by the first CSI-RS is selected.
  • CSI-RS Channel State Information Reference Signal
  • the first parameter group is configured, and the candidate PRACH opportunity set is the first PRACH opportunity set.
  • the first parameter group is configured, and the candidate PRACH opportunity set is the second PRACH opportunity set.
  • the first parameter group is not configured.
  • the first node first selects the first CSI-RS, then determines the candidate PRACH opportunity set, and then randomly selects the first PRACH opportunity with equal probability from at least part of the PRACH opportunities in the candidate PRACH opportunity set.
  • the first node first determines the candidate PRACH opportunity set, then selects the first CSI-RS, and then randomly selects the first PRACH opportunity with equal probability from at least part of the PRACH opportunities in the candidate PRACH opportunity set.
  • the first node selects the first CSI-RS by itself.
  • the first node measures the CSI-RSRP (CSI Reference Signal Received Power) of multiple CSI-RSs, and there is at least one available CSI-RS whose corresponding CSI-RSRP is higher than a second threshold, and the second threshold is configurable; the first CSI-RS is a CSI-RS whose corresponding CSI-RSRP is higher than the second threshold.
  • CSI-RSRP CSI Reference Signal Received Power
  • an available CSI-RS may be used to perform CSI-RSRP measurement.
  • an available CSI-RS is configured to be selected to determine random access resources.
  • the second threshold is configured by RRC signaling.
  • the second threshold is indicated by rsrp-ThresholdCSI-RS.
  • the second threshold is indicated by rsrp-ThresholdCSI-RS-SUL.
  • the second threshold is indicated by rsrp-ThresholdCSI-RS.
  • the second threshold is configured by MAC CE (Medium Access Control layer Control Element).
  • the first node measures the CSI-RSRP of multiple CSI-RSs; the first CSI-RS is a CSI-RS with the highest CSI-RSRP among the multiple CSI-RSs.
  • the CSI-RSRP of a CSI-RS is obtained by measuring at least a portion of the CSI-RS.
  • the CSI-RSRP of a CSI-RS is the linear average over the power contributions of the resource elements of the antenna ports carrying the CSI-RS configured for RSRP measurement within the considered measurement frequency bandwidth in the configured CSI-RS occasions.
  • the multiple CSI-RSs are configurable.
  • the multiple CSI-RSs include at least one CSI-RS configured for the candidate PRACH opportunity set.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set is the candidate PRACH opportunity set.
  • the first parameter group is not configured, and the PRACH opportunities in full-duplex symbols and the PRACH opportunities in non-full-duplex symbols in the candidate PRACH opportunity set are configured by parameters other than the first parameter group.
  • the first PRACH opportunity set does not include PRACH opportunities in non-full-duplex symbols.
  • the benefits of the above method include: it is helpful to reduce the complexity of system design.
  • the first PRACH opportunity set includes at least one PRACH opportunity in a non-full-duplex symbol.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set includes at least one PRACH opportunity in a full-duplex symbol and at least one PRACH opportunity in a non-full-duplex symbol.
  • the first PRACH opportunity is randomly selected with equal probability from the at least part of the PRACH opportunities in the candidate PRACH opportunity set, including:
  • the first node randomly selects the first PRACH opportunity from the at least part of the PRACH opportunities in the candidate PRACH opportunity set with equal probability.
  • a symbol in the present application is a symbol in the time domain.
  • a symbol is an OFDM (Orthogonal Frequency Division Multiplex) symbol.
  • a symbol is a symbol in a slot.
  • the benefits of the above method include: facilitating improvement of uplink capacity.
  • the symbol when a symbol is configured to be usable for full-duplex operation, the symbol is a full-duplex symbol; when a symbol is not configured to be usable for full-duplex operation, the symbol is a non-full-duplex symbol.
  • the symbols used for SBFD operation are full-duplex symbols, not non-full-duplex symbols.
  • the symbols not used for SBFD operation are non-full-duplex symbols, not full-duplex symbols.
  • SBFD symbols are full-duplex symbols
  • non-SBFD symbols are non-full-duplex symbols.
  • all symbols in a full-duplex time slot are full-duplex symbols.
  • all symbols in a non-full-duplex time slot are non-full-duplex symbols.
  • Example 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in Figure 2.
  • Figure 2 illustrates a network architecture 200 of a 5G NR (New Radio)/LTE (Long-Term Evolution)/LTE-A (Long-Term Evolution Advanced) system.
  • the 5G NR/LTE/LTE-A network architecture 200 may be referred to as 5GS (5G System)/EPS (Evolved Packet System) 200 or some other appropriate terminology.
  • 5GS/EPS 200 includes at least one of a UE (User Equipment) 201, a RAN (Radio Access Network) 202, a 5G Core Network (5GC)/EPC (Evolved Packet Core) 210, a Home Subscriber Server (HSS)/UDM (Unified Data Management) 220, and an Internet service 230.
  • the 5GS/EPS can interconnect with other access networks, but these entities/interfaces are not shown for simplicity.
  • the 5GS/EPS provides packet-switched services.
  • the RAN includes a node 203 and other nodes 204.
  • Node 203 provides user and control plane protocol termination towards UE 201.
  • Node 203 can connect to other nodes 204 via an Xn interface (e.g., backhaul)/X2 interface.
  • Node 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a Transmitter Receiver Point (TRP), or some other suitable terminology.
  • Node 203 provides an access point to the 5GC/EPC 210 for UE 201.
  • Examples of UE 201 include a cellular phone, a smartphone, a Session Initiation Protocol (SIP) phone, a laptop computer, a personal digital assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a drone, an aircraft, a narrowband Internet of Things device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similarly functional device.
  • SIP Session Initiation Protocol
  • PDA personal digital assistant
  • satellite radio non-terrestrial base station communications
  • satellite mobile communications a global positioning system
  • a multimedia device e.g., a digital audio player (e.g., an MP3 player), a camera, a game console, a drone, an aircraft, a narrowband Internet of Things device, a machine type communication device, a land
  • Node 203 is connected to 5GC/EPC 210 via an S1/NG interface.
  • 5GC/EPC 210 includes MME (Mobility Management Entity)/AMF (Authentication Management Field)/SMF (Session Management Function) 211, other MMEs/AMFs/SMFs 214, S-GW (Service Gateway)/UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway)/UPF 213.
  • MME/AMF/SMF211 is the control node that handles signaling between UE201 and 5GC/EPC210.
  • MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW/UPF212, which itself is connected to P-GW/UPF213.
  • P-GW provides UE IP address allocation and other functions.
  • P-GW/UPF213 is connected to Internet Services 230.
  • Internet Services 230 includes operator-specific Internet Protocol services, which may include Internet, Intranet, IMS (IP Multimedia Subsystem), and packet switching services.
  • the UE201 corresponds to the first node in this application.
  • the gNB203 corresponds to the second node in this application.
  • the UE201 corresponds to the first node in this application
  • the gNB203 corresponds to the second node in this application.
  • the gNB203 is a macrocellular base station.
  • the gNB203 is a micro cell base station.
  • the gNB203 is a picocell (PicoCell) base station.
  • the gNB203 is a home base station (Femtocell).
  • the gNB203 is a flying platform device.
  • the gNB203 is a satellite device.
  • Embodiment 3 illustrates a schematic diagram of an embodiment of a radio protocol architecture for a user plane and a control plane according to the present application, as shown in FIG3 .
  • FIG3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300.
  • FIG3 illustrates the radio protocol architecture for a first communication node device (a UE, gNB, or RSU (Road Side Unit) in a V2X (Vehicle to Everything) vehicle, an onboard device, or an onboard communication module) and a second communication node device (a gNB, UE, or RSU in a V2X vehicle, an onboard device, or an onboard communication module), or the control plane 300 between two UEs using three layers: Layer 1 (L1), Layer 2 (L2), and Layer 3 (L3).
  • L1 is the lowest layer and implements various PHY (physical layer) signal processing functions.
  • L1 will be referred to herein as PHY 301.
  • Layer 2 (L2) 305 is above PHY 301 and is responsible for the link between the first and second communication node devices, as well as the two UEs, via PHY 301.
  • L2 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device.
  • the PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels.
  • the PDCP sublayer 304 also provides security by encrypting data packets and supports handover of the first communication node device between the second communication node devices.
  • the RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ (Hybrid Automatic Repeat Request).
  • the MAC sublayer 302 provides multiplexing between logical and transport channels.
  • the MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell between first communication node devices.
  • the MAC sublayer 302 is also responsible for HARQ operations.
  • the RRC (Radio Resource Control) sublayer 306 in L3 of the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring lower layers using RRC signaling between the second communication node device and the first communication node device.
  • the radio protocol architecture of the user plane 350 includes Layer 1 (L1) and Layer 2 (L2).
  • the radio protocol architecture for the first and second communication node devices in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300, including the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355.
  • the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead.
  • the L2 layer 355 in the user plane 350 also includes the SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping QoS (Quality of Service) flows and Data Radio Bearers (DRBs) to support service diversity.
  • SDAP Service Data Adaptation Protocol
  • the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., an IP (Internet Protocol) layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., a remote UE, a server, etc.).
  • IP Internet Protocol
  • the wireless protocol architecture in FIG3 is applicable to the first node in this application.
  • the wireless protocol architecture in FIG3 is applicable to the second node in this application.
  • the uplink and downlink TDD configuration signaling in this application is generated in the RRC sublayer 306.
  • Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in Figure 4.
  • Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.
  • the first communications device 410 includes a controller/processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter/receiver 418 , and an antenna 420 .
  • the second communication device 450 includes a controller/processor 459 , a memory 460 , a data source 467 , a transmit processor 468 , a receive processor 456 , a multi-antenna transmit processor 457 , a multi-antenna receive processor 458 , a transmitter/receiver 454 and an antenna 452 .
  • the controller/processor 475 During transmission from the first communication device 410 to the second communication device 450, upper layer data packets from the core network are provided to the controller/processor 475 at the first communication device 410.
  • the controller/processor 475 implements L2 layer functionality.
  • the controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the second communication device 450 based on various priority metrics.
  • the controller/processor 475 is also responsible for retransmission of lost packets and signaling to the second communication device 450.
  • the transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer).
  • the transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), and M-quadrature amplitude modulation (M-QAM)).
  • FEC forward error correction
  • BPSK binary phase shift keying
  • QPSK quadrature phase shift keying
  • M-PSK M-phase shift keying
  • M-QAM M-quadrature amplitude modulation
  • the multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams.
  • the transmit processor 416 maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time and/or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multi-carrier symbol stream.
  • IFFT inverse fast Fourier transform
  • the multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time-domain multi-carrier symbol stream.
  • Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, which is then provided to a different antenna 420.
  • each receiver 454 at the second communication device 450 receives a signal via its corresponding antenna 452.
  • Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream, which is provided to the receive processor 456.
  • the receive processor 456 and the multi-antenna receive processor 458 implement various L1 signal processing functions.
  • the multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454.
  • the receive processor 456 converts the baseband multi-carrier symbol stream, after the receive analog precoding/beamforming operations, from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the receive processor 456 demultiplexes the physical layer data signal and reference signal, where the reference signal is used for channel estimation. The data signal undergoes multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the second communication device 450. The symbols on each spatial stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communications device 410 on the physical channel.
  • FFT Fast Fourier Transform
  • the upper layer data and control signals are then provided to the controller/processor 459.
  • the controller/processor 459 implements the functions of the L2 layer.
  • the controller/processor 459 may be associated with a memory 460 that stores program code and data.
  • the memory 460 may be referred to as a computer-readable medium.
  • the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the core network.
  • the upper layer data packets are then provided to all protocol layers above the L2 layer.
  • Various control signals may also be provided to the L3 layer for L3 processing.
  • a data source 467 is used at the second communication device 450 to provide upper layer data packets to the controller/processor 459.
  • the data source 467 represents all protocol layers above the L2 layer.
  • the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane.
  • the controller/processor 459 is also responsible for retransmission of lost packets and signaling to the first communication device 410.
  • the transmit processor 468 performs modulation mapping and channel coding, while the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming.
  • the transmit processor 468 then modulates the resulting spatial stream into a multi-carrier/single-carrier symbol stream.
  • the stream is provided to different antennas 452 via the transmitter 454.
  • Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a RF symbol stream before providing it to the antenna 452.
  • the functionality at the first communication device 410 is similar to the reception functionality at the second communication device 450 described for transmission from the first communication device 410 to the second communication device 450.
  • Each receiver 418 receives RF signals via its corresponding antenna 420, converts the received RF signals into baseband signals, and provides the baseband signals to the multi-antenna receive processor 472 and the receive processor 470.
  • the receive processor 470 and the multi-antenna receive processor 472 collectively implement L1 layer functionality.
  • the controller/processor 475 implements L2 layer functionality.
  • the controller/processor 475 may be associated with a memory 476 storing program codes and data.
  • the memory 476 may be referred to as a computer-readable medium.
  • the controller/processor 475 During transmission from the second communication device 450 to the first communication device 410, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the UE 450. Upper layer packets from controller/processor 475 may be provided to the core network.
  • the first node in the present application includes the second communication device 450
  • the second node in the present application includes the first communication device 410 .
  • the first node is a user equipment
  • the second node is a relay node
  • the first node is a user equipment
  • the second node is a base station device.
  • the first node is a relay node
  • the second node is a base station device
  • the second communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor.
  • the second communication device 450 device at least: uses a first PRACH opportunity to send PRACH, the first PRACH opportunity is randomly selected with equal probability from at least part of the PRACH opportunities in the candidate PRACH opportunity set; wherein the first parameter group includes at least one random access parameter for full-duplex symbols; when the first parameter group is configured, the candidate PRACH opportunity set is the first PRACH opportunity set or the second PRACH opportunity set, the first PRACH opportunity set includes at least one PRACH opportunity in full-duplex symbols, and the PRACH opportunities in the second PRACH opportunity set are all PRACH opportunities in non-full-duplex symbols; when the first parameter group is not configured, the candidate PRACH opportunity set includes at least one PRACH opportunity in full-duplex symbols and at least one PRACH opportunity in non-full-duplex symbols.
  • the second communication device 450 corresponds to the first node in this application.
  • the second communication device 450 corresponds to the first node in this application.
  • the first communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor.
  • the first communication device 410 device at least: receives PRACH in a first PRACH opportunity, the first PRACH opportunity being randomly selected with equal probability from at least part of the PRACH opportunities in the candidate PRACH opportunity set; wherein the first parameter group includes at least one random access parameter for full-duplex symbols; when the first parameter group is configured, the candidate PRACH opportunity set is the first PRACH opportunity set or the second PRACH opportunity set, the first PRACH opportunity set includes at least one PRACH opportunity in full-duplex symbols, and the PRACH opportunities in the second PRACH opportunity set are all PRACH opportunities in non-full-duplex symbols; when the first parameter group is not configured, the candidate PRACH opportunity set includes at least one PRACH opportunity in full-duplex symbols and at least one PRACH opportunity in non-full-duplex symbols.
  • the first communication device 410 corresponds to the second node in this application.
  • the first communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating an action when executed by at least one processor, the action including: receiving PRACH in a first PRACH opportunity, the first PRACH opportunity being randomly selected with equal probability from at least part of the PRACH opportunities in the candidate PRACH opportunity set; wherein the first parameter group includes at least one random access parameter for full-duplex symbols; when the first parameter group is configured, the candidate PRACH opportunity set is the first PRACH opportunity set or the second PRACH opportunity set, the first PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol, and the PRACH opportunities in the second PRACH opportunity set are all PRACH opportunities in non-full-duplex symbols; when the first parameter group is not configured, the candidate PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol and at least one PRACH opportunity in the non-full-duplex symbol.
  • the first communication device 410 corresponds to the second node in this application.
  • At least one of ⁇ the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, the controller/processor 459, the memory 460, the data source 467 ⁇ is used to receive the uplink and downlink TDD configuration signaling in this application.
  • At least one of ⁇ the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475, the memory 476 ⁇ is used to send the uplink and downlink TDD configuration signaling in this application.
  • At least one of ⁇ the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459, the memory 460, the data source 467 ⁇ is used to transmit PRACH.
  • At least one of ⁇ the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller/processor 475, and the memory 476 ⁇ is used to receive PRACH.
  • Embodiment 5 illustrates a signal transmission flow chart according to an embodiment of the present application, as shown in FIG5 .
  • the first node U1 and the second node U2 communicate via an air interface.
  • the steps in the dotted box F1 are optional.
  • the first node U1 receives uplink and downlink TDD configuration signaling in step S511; and sends PRACH using the first PRACH opportunity in step S512.
  • the second node U2 sends uplink and downlink TDD configuration signaling in step S521; and receives PRACH in the first PRACH opportunity in step S522.
  • the first PRACH opportunity is randomly selected with equal probability from at least part of the PRACH opportunities in the candidate PRACH opportunity set; the first parameter group includes at least one random access parameter for full-duplex symbols; when the first parameter group is configured, the candidate PRACH opportunity set is the first PRACH opportunity set or the second PRACH opportunity set, the first PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol, and the PRACH opportunities in the second PRACH opportunity set are all PRACH opportunities in non-full-duplex symbols; when the first parameter group is not configured, the candidate PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol and at least one PRACH opportunity in the non-full-duplex symbol.
  • the first node selects the first PRACH opportunity set or the second PRACH opportunity set as the candidate PRACH opportunity set according to a first probability distribution.
  • the PRACH opportunities in the full-duplex symbols and the PRACH opportunities in the non-full-duplex symbols in the candidate PRACH opportunity set both depend on the configuration of the first random access parameter, and the first random access parameter is a parameter for configuring the PRACH opportunities.
  • the first PRACH opportunity is randomly selected with equal probability from the at least part of the PRACH opportunities in the candidate PRACH opportunity set.
  • the PRACH opportunities in the first PRACH opportunity set are all PRACH opportunities in full-duplex symbols.
  • the uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.
  • the first node U1 is the first node in this application.
  • the second node U2 is the second node in this application.
  • the first node U1 is a UE.
  • the second node U2 is a base station.
  • the air interface between the second node U2 and the first node U1 is a Uu interface.
  • the air interface between the second node U2 and the first node U1 includes a cellular link.
  • the air interface between the second node U2 and the first node U1 includes a wireless interface between a base station device and a user equipment.
  • the air interface between the second node U2 and the first node U1 includes a wireless interface between a satellite device and a user equipment.
  • the air interface between the second node U2 and the first node U1 includes a wireless interface between a relay device and a user equipment.
  • the first parameter group is configured, and the configuration of the first parameter group is before the sending/receiving of the uplink/downlink TDD configuration signaling.
  • the first parameter group is configured, and the configuration of the first parameter group is after the sending/receiving of the uplink/downlink TDD configuration signaling.
  • the first parameter group is configured, including: the second node configuring the first parameter group to the first node.
  • the first parameter group is configured, including: the first node receives a signaling, and the signaling includes configuration information of one or more parameters in the first parameter group.
  • the first parameter group is configured to include:
  • the second node sends a signaling including configuration information of one or more parameters in the first parameter group; the first node receives the signaling.
  • the first parameter group is not configured, including: the second node does not configure the first parameter group to the first node.
  • the steps in the dashed box F1 exist.
  • the steps in the dashed box F1 do not exist.
  • Embodiment 6 illustrates a schematic diagram of a candidate PRACH opportunity set when the first parameter group is configured according to an embodiment of the present application, as shown in FIG6 .
  • the first parameter group is configured; the first node selects the first PRACH opportunity set or the second PRACH opportunity set as the candidate PRACH opportunity set according to a first probability distribution; the probability that the first node selects the first PRACH opportunity set as the candidate PRACH opportunity set is P, and the probability of selecting the second PRACH opportunity set as the candidate PRACH opportunity set is 1-P; the P is greater than 0 and less than 1.
  • the first probability distribution is configurable.
  • the first probability distribution is an equal probability distribution.
  • P is equal to 0.5.
  • P is less than 0.5.
  • P is greater than 0.5.
  • the P is configurable.
  • the first PRACH opportunity set includes multiple PRACH opportunities.
  • the second PRACH opportunity set includes multiple PRACH opportunities.
  • the first PRACH opportunity set is configurable.
  • the second PRACH opportunity set is configurable.
  • the PRACH opportunities in the first PRACH opportunity set are configurable.
  • the PRACH opportunities in the second PRACH opportunity set are configurable.
  • one PRACH opportunity in the first PRACH opportunity set is configured by RRC signaling.
  • one PRACH opportunity in the second PRACH opportunity set is configured by RRC signaling.
  • At least one PRACH opportunity in a full-duplex symbol in the first PRACH opportunity set depends on the configuration of parameters in the first parameter group.
  • the first parameter group includes configuration parameters of PRACH opportunities in full-duplex symbols.
  • Embodiment 7 illustrates a schematic diagram of a candidate PRACH opportunity set when the first parameter group is not configured according to an embodiment of the present application, as shown in FIG7 .
  • the PRACH opportunities in the full-duplex symbols and the PRACH opportunities in the non-full-duplex symbols in the candidate PRACH opportunity set all follow the configuration of at least one parameter, each of the at least one parameter is a parameter for configuring the PRACH opportunity, and the at least one parameter includes a first random access parameter.
  • one parameter of the at least one parameter indicates a time domain resource used for a PRACH opportunity.
  • one parameter of the at least one parameter indicates frequency domain resources used for the PRACH opportunity.
  • one of the at least one parameter indicates a PRACH configuration index (PRACH Configuration Index).
  • the first parameter group is not configured, and the PRACH opportunities in the full-duplex symbols in the candidate PRACH opportunity set are mapped to available time-frequency resources on the full-duplex symbols according to the indication of the at least one parameter.
  • the first parameter group is not configured, and the PRACH opportunities in the non-full-duplex symbols in the candidate PRACH opportunity set are mapped to available time-frequency resources on the non-full-duplex symbols according to the indication of the at least one parameter.
  • the first node receives a signaling including configuration information of the at least one parameter.
  • the second node sends a signaling, and the signaling includes configuration information of the at least one parameter.
  • the PRACH opportunities in the full-duplex symbols and the PRACH opportunities in the non-full-duplex symbols in the candidate PRACH opportunity set both depend on the configuration of the first random access parameter, and the first random access parameter is a parameter for configuring the PRACH opportunities.
  • the first random access parameter indicates a time domain resource used for a PRACH opportunity.
  • the first random access parameter indicates frequency domain resources used for PRACH opportunities.
  • the first parameter group is not configured, and the PRACH opportunities in the full-duplex symbols in the candidate PRACH opportunity set are mapped to available frequency domain resources on the full-duplex symbols according to the indication of the first random access parameter.
  • the first parameter group is not configured, and the PRACH opportunities in the non-full-duplex symbols in the candidate PRACH opportunity set are mapped to available frequency domain resources on the non-full-duplex symbols as indicated by the first random access parameter.
  • the first random access parameter indicates a PRACH configuration index (PRACH Configuration Index).
  • the first node receives a signaling including configuration information of the first random access parameter.
  • the second node sends a signaling, and the signaling includes configuration information of the first random access parameter.
  • Embodiment 8 illustrates a schematic diagram of at least some PRACH opportunities in a candidate PRACH opportunity set according to an embodiment of the present application, as shown in FIG8.
  • a gray filled box represents a PRACH opportunity in the at least some PRACH opportunities in the candidate PRACH opportunity set.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set includes 4 PRACH opportunities.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set includes multiple PRACH opportunities.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set includes 2 PRACH opportunities.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set includes more than 4 PRACH opportunities.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set is the candidate PRACH opportunity set.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set is a proper subset of the candidate PRACH opportunity set.
  • the at least part of the PRACH opportunities in the candidate PRACH opportunity set include consecutive PRACH opportunities.
  • the first node selects the first SSB in this application, and at least part of the PRACH opportunities in the candidate PRACH opportunity set are PRACH opportunities corresponding to the first SSB.
  • the first parameter group is configured, and the candidate PRACH opportunity set is the first PRACH opportunity set.
  • the first parameter group is configured, and the candidate PRACH opportunity set is the second PRACH opportunity set.
  • the first parameter group is not configured.
  • the candidate PRACH opportunity set includes Q PRACH opportunity subsets; each PRACH opportunity subset in the Q PRACH opportunity subsets corresponds to at least one SS/PBCH block index, and the at least part of the PRACH opportunities in the candidate PRACH opportunity set is a PRACH opportunity subset in the Q PRACH opportunity subsets; Q is a configurable positive integer.
  • At least part of the PRACH opportunities in the candidate PRACH opportunity set are continuous PRACH opportunities corresponding to the first SSB.
  • At least part of the PRACH opportunities in the candidate PRACH opportunity set are configured to be mapped to the SS/PBCH block (synchronization signals/physical broadcast channel block, SSB) index of the first SSB.
  • SS/PBCH block synchronization signals/physical broadcast channel block, SSB
  • the first node selects the first CSI-RS in this application, and the at least part of the PRACH opportunities in the candidate PRACH opportunity set include PRACH opportunities (PRACH occasions) corresponding to the first CSI-RS, and the PRACH opportunities corresponding to the first CSI-RS are PRACH opportunities configured for performing non-contention random access when the candidate beam identified by the first CSI-RS is selected.
  • the first parameter group is configured, and the candidate PRACH opportunity set is the first PRACH opportunity set.
  • the first parameter group is configured, and the candidate PRACH opportunity set is the second PRACH opportunity set.
  • the first parameter group is not configured.
  • Embodiment 9 illustrates a schematic diagram illustrating full-duplex symbols and non-full-duplex symbols according to an embodiment of the present application, as shown in FIG9 .
  • this symbol when a symbol is indicated as downlink by uplink/downlink TDD configuration signaling and can be used for uplink transmission, this symbol is a full-duplex symbol; when a symbol is indicated as uplink by uplink/downlink TDD configuration signaling, this symbol is a non-full-duplex symbol.
  • the symbols indicated as downlink by the uplink/downlink TDD configuration signaling and available for uplink transmission are full-duplex symbols.
  • the method disclosed in the present application is conducive to improving the transmission performance of PRACH on symbols indicated as downlink by the uplink and downlink TDD configuration signaling and available for uplink transmission.
  • any full-duplex symbol is a symbol indicated as a downlink symbol by the uplink/downlink TDD configuration signaling and can be used for uplink transmission.
  • whether a flexible symbol is a full-duplex symbol is configurable.
  • whether a symbol indicated as a downlink symbol by the uplink and downlink TDD configuration signaling is a full-duplex symbol is configured by RRC signaling.
  • the symbols indicated by the uplink and downlink TDD configuration signaling as downlink symbols and unavailable for uplink transmission are not full-duplex symbols.
  • the symbols indicated as downlink by the uplink/downlink TDD configuration signaling and available for uplink transmission are full-duplex symbols; the symbols indicated as downlink by the uplink/downlink TDD configuration signaling and unavailable for uplink transmission are non-full-duplex symbols.
  • symbols indicated as uplink by the uplink/downlink TDD configuration signaling are not available for downlink transmission.
  • the signal that can be used for uplink transmission includes: at least being used for PUSCH (Physical Uplink Shared CHannel) transmission (transmission(s)).
  • PUSCH Physical Uplink Shared CHannel
  • the method disclosed in this application is conducive to significantly improving the uplink capacity of the system.
  • the channels that can be used for uplink transmission include: at least channels that can be used for PUSCH and PUCCH (Physical Uplink Control CHannel) transmission (transmission(s)).
  • PUCCH Physical Uplink Control CHannel
  • the data that can be used for uplink transmission includes: at least being used for PUSCH and PRACH transmission (transmission(s)).
  • the data that can be used for uplink transmission includes: at least being used for PUCCH and PRACH transmission (transmission(s)).
  • the data that can be used for uplink transmission includes: at least being used for PUSCH transmission, PUCCH transmission and PRACH transmission (transmission(s)).
  • the signaling channel that can be used for uplink transmission includes: at least one of PUSCH transmission, PUCCH transmission, PRACH (Physical Random Access CHannel) transmission (transmission(s)) and SRS (Sounding Reference Signal) transmission (transmission(s)).
  • the signal that can be used for uplink transmission includes: signal that can be used for at least two of PUSCH transmission, PUCCH transmission, PRACH transmission and SRS transmission.
  • the signal that can be used for uplink transmission includes: signal that can be used for PUSCH transmission, PUCCH transmission, PRACH transmission and SRS transmission.
  • the uplink and downlink TDD configuration signaling indicates at least one symbol as downlink.
  • the uplink and downlink TDD configuration signaling indicates at least one symbol as uplink.
  • the uplink and downlink TDD configuration signaling is RRC signaling.
  • the benefits of the above method include: high reliability of signaling transmission.
  • the uplink and downlink TDD configuration signaling is tdd-UL-DL-ConfigurationCommon.
  • the benefits of the above method include: the uplink and downlink TDD configuration signaling can be applicable to multiple users, which is conducive to reducing control signaling overhead.
  • the uplink and downlink TDD configuration signaling is tdd-UL-DL-ConfigurationDedicated.
  • the uplink and downlink TDD configuration signaling includes tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated.
  • the uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.
  • the uplink and downlink TDD configuration signaling includes tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.
  • this symbol is a symbol indicated as uplink/downlink by the uplink/downlink TDD configuration signaling.
  • Embodiment 10 illustrates a schematic diagram of a first parameter group according to an embodiment of the present application, as shown in FIG10 .
  • the first node determines whether the first parameter group is configured.
  • the first parameter group includes higher layer parameters.
  • the first parameter group is an information element of the RRC layer.
  • the first parameter group is configured to the first node by the second node; or, the first parameter group is not configured.
  • the first parameter group is not configured.
  • the first parameter group when the first node does not receive configuration information of the first parameter group, the first parameter group is not configured; when the first node receives configuration information of at least one parameter in the first parameter group, the first parameter group is configured.
  • the first parameter group when at least one parameter in the first parameter group is configured, the first parameter group is configured; when any parameter in the first parameter group is not configured, the first parameter group is not configured.
  • the first parameter group includes only one parameter.
  • the first node device A00 is a user equipment.
  • the first node device A00 is a relay node.
  • the first node device A00 is a vehicle-mounted communication device.
  • the first node device A00 is a conventional user equipment.
  • the first receiver A01 includes at least one of the antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, controller/processor 459, memory 460 and data source 467 in Figure 4 of the present application.
  • the first receiver A01 includes at least the first five of the antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, controller/processor 459, memory 460 and data source 467 in FIG4 of the present application.
  • the first receiver A01 includes at least the first three of the antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, controller/processor 459, memory 460 and data source 467 in Figure 4 of the present application.
  • the first receiver A01 includes at least the first two of the antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, controller/processor 459, memory 460 and data source 467 in Figure 4 of the present application.
  • the first transmitter A02 includes at least one of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller/processor 459, memory 460 and data source 467 in FIG4 of the present application.
  • the first transmitter A02 includes at least the first five of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller/processor 459, memory 460 and data source 467 in FIG4 of the present application.
  • the first transmitter A02 includes at least the first four of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller/processor 459, memory 460 and data source 467 in FIG4 of the present application.
  • the first transmitter A02 includes at least the first three of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller/processor 459, memory 460 and data source 467 in FIG4 of the present application.
  • the first transmitter A02 includes at least the first two of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller/processor 459, memory 460 and data source 467 in FIG4 of the present application.
  • the first node selects the first PRACH opportunity set or the second PRACH opportunity set as the candidate PRACH opportunity set according to a first probability distribution.
  • the PRACH opportunities in the full-duplex symbols and the PRACH opportunities in the non-full-duplex symbols in the candidate PRACH opportunity set both depend on the configuration of the first random access parameter, and the first random access parameter is a parameter for configuring the PRACH opportunities.
  • the first parameter group is not configured, and the at least part of the PRACH opportunities in the candidate PRACH opportunity set includes at least one PRACH opportunity in a full-duplex symbol and at least one PRACH opportunity in a non-full-duplex symbol.
  • the first PRACH opportunity is randomly selected with equal probability from the at least part of the PRACH opportunities in the candidate PRACH opportunity set.
  • the PRACH opportunities in the first PRACH opportunity set are all PRACH opportunities in full-duplex symbols.
  • the first receiver A01 receives uplink and downlink TDD configuration signaling; wherein, when a symbol is indicated as downlink by the uplink and downlink TDD configuration signaling and can be used for uplink transmission, this symbol is a full-duplex symbol; when a symbol is indicated as uplink by the uplink and downlink TDD configuration signaling, this symbol is not a full-duplex symbol; when a symbol is not a full-duplex symbol, this symbol is a non-full-duplex symbol.
  • the uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.
  • the first transmitter A02 uses a first PRACH opportunity to send PRACH, and the first PRACH opportunity is randomly selected with equal probability from at least part of the PRACH opportunities in the candidate PRACH opportunity set; wherein the first parameter group includes at least one random access parameter for full-duplex symbols; when the first parameter group is configured, the candidate PRACH opportunity set is the first PRACH opportunity set or the second PRACH opportunity set, the first PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol, and the PRACH opportunities in the second PRACH opportunity set are all PRACH opportunities in non-full-duplex symbols; when the first parameter group is not configured, the candidate PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol and at least one PRACH opportunity in the non-full-duplex symbol, Both the PRACH opportunities in the full-duplex symbols and the PRACH opportunities in the non-full-duplex symbols in the candidate PRACH opportunity set depend on the configuration of the first random access parameter, which is a parameter for configuring the PRACH opportunities; when the first parameter group includes
  • the first node selects the first PRACH opportunity set or the second PRACH opportunity set as the candidate PRACH opportunity set according to a first probability distribution.
  • the PRACH opportunities in the first PRACH opportunity set are all PRACH opportunities in full-duplex symbols.
  • Embodiment 12 illustrates a structural block diagram of a processing device in a second node device, as shown in FIG12.
  • the second node device processing device B00 includes a second transmitter B01 and a second receiver B02.
  • the second node device B00 is a base station.
  • the second node device B00 is a satellite device.
  • the second node device B00 is a relay node.
  • the second node device B00 is a base station supporting full-duplex operation (non-overlapping sub-bands or other types).
  • the second node device B00 is one of a test device, a test equipment, and a test instrument.
  • the second transmitter B01 includes at least one of the antenna 420, transmitter 418, multi-antenna transmission processor 471, transmission processor 416, controller/processor 475 and memory 476 in FIG. 4 of the present application.
  • the second transmitter B01 includes at least the first five of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller/processor 475 and memory 476 in FIG. 4 of the present application.
  • the second transmitter B01 includes at least the first four of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller/processor 475 and memory 476 in FIG. 4 of the present application.
  • the second transmitter B01 includes at least the first three of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller/processor 475 and memory 476 in FIG. 4 of the present application.
  • the second receiver B02 includes at least one of the antenna 420, receiver 418, multi-antenna reception processor 472, reception processor 470, controller/processor 475 and memory 476 in FIG. 4 of the present application.
  • the second receiver B02 includes at least the first five of the antenna 420, receiver 418, multi-antenna reception processor 472, reception processor 470, controller/processor 475 and memory 476 in FIG. 4 of the present application.
  • the second receiver B02 includes at least the first three of the antenna 420, receiver 418, multi-antenna receiving processor 472, receiving processor 470, controller/processor 475 and memory 476 in FIG. 4 of the present application.
  • the second receiver B02 includes at least the first two of the antenna 420, receiver 418, multi-antenna reception processor 472, reception processor 470, controller/processor 475 and memory 476 in FIG. 4 of the present application.
  • the second receiver B02 receives PRACH in a first PRACH opportunity, and the first PRACH opportunity is randomly selected with equal probability from at least part of the PRACH opportunities in the candidate PRACH opportunity set; wherein, the first parameter group includes at least one random access parameter for full-duplex symbols; when the first parameter group is configured, the candidate PRACH opportunity set is the first PRACH opportunity set or the second PRACH opportunity set, the first PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol, and the PRACH opportunities in the second PRACH opportunity set are all PRACH opportunities in non-full-duplex symbols; when the first parameter group is not configured, the candidate PRACH opportunity set includes at least one PRACH opportunity in the full-duplex symbol and at least one PRACH opportunity in the non-full-duplex symbol.
  • the candidate PRACH opportunity set is a result of being selected from the first PRACH opportunity set and the second PRACH opportunity set according to a first probability distribution.
  • the PRACH opportunities in the full-duplex symbols and the PRACH opportunities in the non-full-duplex symbols in the candidate PRACH opportunity set both depend on the configuration of the first random access parameter, and the first random access parameter is a parameter for configuring the PRACH opportunities.
  • the first parameter group is not configured, and the at least part of the PRACH opportunities in the candidate PRACH opportunity set includes at least one PRACH opportunity in a full-duplex symbol and at least one PRACH opportunity in a non-full-duplex symbol.
  • the first PRACH opportunity is randomly selected with equal probability from the at least part of the PRACH opportunities in the candidate PRACH opportunity set.
  • the PRACH opportunities in the first PRACH opportunity set are all PRACH opportunities in full-duplex symbols.
  • the uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

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

Abstract

La présente demande divulgue un procédé et un appareil associés à un PRACH dans un nœud utilisé pour une communication sans fil. Un premier émetteur utilise une première occasion de PRACH pour envoyer un PRACH, la première occasion de PRACH étant sélectionnée de manière aléatoire à une probabilité égale parmi au moins une partie d'occasions de PRACH dans un ensemble d'occasions de PRACH candidates. Un premier groupe de paramètres comprend au moins un paramètre d'accès aléatoire pour des symboles en duplex intégral. Lorsque le premier groupe de paramètres est configuré, l'ensemble d'occasions de PRACH candidates est un premier ensemble d'occasions de PRACH ou un second ensemble d'occasions de PRACH. Le premier ensemble d'occasions de PRACH comprend au moins une occasion de PRACH dans des symboles en duplex intégral, et des occasions de PRACH dans le second ensemble d'occasions de PRACH sont toutes des occasions de PRACH dans des symboles en duplex non intégral. Lorsque le premier groupe de paramètres n'est pas configuré, l'ensemble d'occasions de PRACH candidates comprend au moins une occasion de PRACH dans les symboles en duplex intégral et au moins une occasion de PRACH dans les symboles en duplex non intégral.
PCT/CN2025/071451 2024-03-19 2025-01-09 Procédé et appareil associés à un prach dans un nœud utilisé pour une communication sans fil Pending WO2025194983A1 (fr)

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CN202410316915.7A CN119815562A (zh) 2024-03-19 2024-03-19 一种被用于无线通信的节点中的与prach有关的方法和装置
CN202410316915.7 2024-03-19

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WO2025194983A1 true WO2025194983A1 (fr) 2025-09-25

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