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WO2025174320A1 - Équipement utilisateur, nœud de réseau radio et procédés de configuration de prach - Google Patents

Équipement utilisateur, nœud de réseau radio et procédés de configuration de prach

Info

Publication number
WO2025174320A1
WO2025174320A1 PCT/SE2025/050133 SE2025050133W WO2025174320A1 WO 2025174320 A1 WO2025174320 A1 WO 2025174320A1 SE 2025050133 W SE2025050133 W SE 2025050133W WO 2025174320 A1 WO2025174320 A1 WO 2025174320A1
Authority
WO
WIPO (PCT)
Prior art keywords
prach
configuration
prach configuration
network node
radio network
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/SE2025/050133
Other languages
English (en)
Inventor
Magnus ÅSTRÖM
Peter Alriksson
Johan AXNÄS
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of WO2025174320A1 publication Critical patent/WO2025174320A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal

Definitions

  • UEs also known as wireless communication devices, mobile stations, stations (STA) and/or wireless devices, communicate via a Radio Access Network (RAN) with one or more core networks (CN).
  • the RAN covers a geographical area which is divided into service areas or cells, with each service area or cell being served by a radio network node such as an access node, e.g., a Wi-Fi access point or a radio base station (RBS), which in some networks may also be called, for example, a NodeB, a gNodeB, or an eNodeB.
  • the service area or cell is a geographical area where radio coverage is provided by the radio network node.
  • the radio network node operates on radio frequencies to communicate over an air interface with the UEs within range of the radio network node.
  • the radio network node communicates over a downlink (DL) to the UE and the UE communicates over an uplink (UL) to the radio network node.
  • DL downlink
  • UL uplink
  • a Universal Mobile Telecommunications System is a third generation (3G) telecommunication network, which evolved from the second generation (2G) Global System for Mobile Communications (GSM).
  • the UMTS terrestrial radio access network (UTRAN) is essentially a RAN using wideband code division multiple access (WCDMA) and/or High-Speed Packet Access (HSPA) for communication with user equipment.
  • WCDMA wideband code division multiple access
  • HSPA High-Speed Packet Access
  • 3GPP Third Generation Partnership Project
  • telecommunications suppliers propose and agree upon standards for present and future generation networks and investigate e.g. enhanced data rate and radio capacity.
  • 3GPP Third Generation Partnership Project
  • radio network nodes may be connected, e.g., by landlines or microwave, to a controller node, such as a radio network controller (RNC) or a base station controller (BSC), which supervises and coordinates various activities of the plural radio network nodes connected thereto.
  • RNC radio network controller
  • BSC base station controller
  • the RNCs are typically connected to one or more core networks.
  • the Evolved Packet System comprises the Evolved Universal Terrestrial Radio Access Network (E-UTRAN), also known as the Long-Term Evolution (LTE) radio access network, and the Evolved Packet Core (EPC), also known as System Architecture Evolution (SAE) core network.
  • E-UTRAN also known as the Long-Term Evolution (LTE) radio access network
  • EPC also known as System Architecture Evolution (SAE) core network.
  • E-UTRAN/LTE is a 3GPP radio access technology wherein the radio network nodes are directly connected to the EPC core network.
  • the Radio Access Network (RAN) of an EPS has an architecture comprising radio network nodes connected directly to one or more core networks.
  • Transmit-side beamforming means that the transmitter can amplify the transmitted signals in a selected direction or directions, while suppressing the transmitted signals in other directions.
  • a receiver can amplify signals from a selected direction or directions, while suppressing unwanted signals from other directions.
  • NR is connected to the 5G Core Network (5GC) which comprises a number of Network Functions (NF) such as Session Management Function (SMF), User Plane Function (UPF), Access and Mobility Management Function (AMF), Authentication Service Function (AUSF), Policy Control Function (PCF), Unified Data Manager (UDM), Network Repository Function (NRF), Network Exposure Function (NEF), just to mention some.
  • NFs can discover other NFs by using a discovery service provided by the Network Repository Function (NRF).
  • Transmission and reception from a node can be multiplexed in the frequency domain or in the time domain, or combinations thereof.
  • Frequency Division Duplex as illustrated to the left in Fig. 1 implies that downlink and uplink transmission take place in different, sufficiently separated, frequency bands.
  • Time Division Duplex as illustrated to the right in Fig. 1 , implies that downlink and uplink transmission take place in different, non-overlapping time slots.
  • TDD can operate in unpaired spectrum
  • FDD requires paired spectrum.
  • Fig. 1 shows a Frequency- and time-division duplex.
  • the structure of the transmitted signal in a communication system is organized in the form of a frame structure.
  • the pattern at the top of the diagram is what it assumes.
  • the network can make use of the 'F' symbols flexibly, by scheduling and/or triggering either an uplink or a downlink signal and/or channel in a UE specific manner. This allows for very dynamic behavior: the direction is not known to the UE a priori; rather, the direction becomes known once the UE detects a DCI scheduling and/or triggering a particular DL or UL signal and/or channel.
  • TDD-DL-UL- ConfigCommon configures the cell-specific pattern
  • TDD-DL-UL-ConfigDedicated if provided, UE-specifically configures the direction for some or all of the 'F' symbols in the cell-specific pattern.
  • Fig. 3 shows a Conventional TDD carrier or carrier systems.
  • Fig. 5 shows exemplary configurations of 3 RB sets in an SBFD symbol configured as (a) D - II - D and (b) as II - D - II.
  • PRACH physical random access channel
  • the cell-specific (common) TDD LIL/DL pattern is assumed as D-D-D-D- II, which is also shown in Fig. 6.
  • the UE assumes that a RACH occasion is valid if it is within UL symbols according to the following text extract:
  • ROs are configured in the frequency domain via two parameters: msg1-FDM which indicates the number of ROs in the frequency domain (1 , 2, 4, or 8) within an OFDM symbol, and msg 1 -Frequencystart which indicates the lowest indexed RB in the active BWP of the first RO in the frequency domain.
  • RACH-ConfigGeneric :: SEQUENCE ⁇ prach-Configurationlndex INTEGER (0..255), msg1 -FDM ENUMERATED ⁇ one, two, four, eight ⁇ , msg1 -Frequencystart INTEGER (0..maxNrofPhysicalResourceBlocks-1), zeroCorrelationZoneConfig INTEGER(0..15), preambleReceivedTargetPower INTEGER (-202..-60),
  • a value of 1/8, 1/4, or 1/2 means that 1 SS/PBCH block (SSB) is mapped to either 8, 4 or 2 consecutive ROs, respectively.
  • a value of 1, 2, 4, 8, or 16 means that 1, 2, 4, 8, or 16 SSBs, respectively, are mapped to a single RO.
  • SS stands for synchronization signal
  • PBCH stands for physical broadcast channel.
  • the ordering of SSB to RO mapping is defined in 3GPP TS 38.213 Section 8.1 according to the following text extract:
  • SS/PBCH block indexes provided by ssb-PositionsInBurst in SIB1 or in ServingCellConfigCommon are mapped to valid PRACH occasions in the following order where the parameters are described in [4, TS 38.211],
  • mapping is performed based on valid ROs, and follows a frequency first, time second ordering.
  • PRACH configuration example with the following additional configuration:
  • SSB-RO mapping results in the SSB-RO mapping shown in Fig. 7.
  • the association period is equal to 1, i.e., a complete cycle of SSB indices occurs within a single PRACH configuration period.
  • Fig. 7 shows an exemplary SSB-RO mapping assuming 4 FDM'd ROs with each SSB mapped to a single RO.
  • the preamble received target power is configured via the parameter: preambleReceivedTargetPower which indicates the target power level at the receiver side.
  • preambleReceivedTargetPower which indicates the target power level at the receiver side.
  • the UE uses this parameter together with a pathloss estimate and maximum output power compute the transmission power for the PRACH.
  • RACH occasions (RO) in SBFD symbols and ROs in regular TDD symbols differ in terms of the expected signal to interference plus noise ratio (SI NR) at the receiver.
  • SI NR expected signal to interference plus noise ratio
  • SBFD symbols are subject to higher interference levels than regular TDD symbols.
  • the PRACH format configured in SBFD symbols may differ from the one configured in regular TDD symbols.
  • the object is achieved, according to some embodiments herein, by providing a method performed by a UE for handling communication in a wireless communication network.
  • the UE receives an indication of a first PRACH configuration.
  • the UE obtains an indication of a second PRACH configuration.
  • the UE selects an RO and a PRACH preamble for transmission from the first and/or second PRACH configuration, and performs a random access using the selected RO and PRACH preamble.
  • a computer program product comprising instructions, which, when executed on at least one processor, cause the at least one processor to carry out the methods herein, as performed by the UE and the radio network node, respectively.
  • a computer-readable storage medium having stored thereon a computer program product comprising instructions which, when executed on at least one processor, cause the at least one processor to carry out the methods herein, as performed by the UE and the radio network node, respectively.
  • the object is achieved by providing a UE, and a radio network node configured to perform the methods herein, respectively.
  • the object is achieved, according to some embodiments herein, by providing a UE for handling communication in a wireless communication network.
  • the UE is configured to receive an indication of a first PRACH configuration.
  • the UE is configured to obtain an indication of a second PRACH configuration.
  • the UE is configured to select an RO and a PRACH preamble for transmission from the first and/or second PRACH configuration, and perform a random access using the selected RO and PRACH preamble.
  • a UE for transmitting a PRACH preamble to a network node, where both the UE and radio network node may be capable of SBFD operation.
  • the UE receives a first PRACH configuration such as a legacy PRACH configuration, and then the UE obtains a second PRACH configuration such as a SBFD PRACH configuration.
  • the configurations may include, e.g., RO locations, PRACH format, SSB-to-PRACH mapping etc.
  • the UE determines or selects a RO and an associated PRACH preamble.
  • the UE uses the RO and preamble when performing a random access (RA).
  • RA random access
  • embodiments herein handle an efficient communication, for example, by using PRACH configuration for SBFD, in a wireless communication network.
  • Fig. 1 shows FDD according to prior art
  • Fig. 4 shows a portion of a wide bandwidth carrier according to prior art
  • Fig. 5 shows two exemplary RB set configurations according to prior art
  • Fig. 6 shows an example of a PRACH configuration according to prior art
  • Fig. 7 shows an SSB-RO mapping according to prior art
  • Fig. 8 shows an overview depicting a wireless communication network according to embodiments herein;
  • Fig. 9 is a combined flowchart and signalling scheme according to some embodiments herein;
  • Fig. 10 is a schematic flowchart depicting a method performed by a UE according to embodiments herein;
  • Fig. 12 is a schematic overview depicting a method according to some embodiments herein;
  • Fig. 13 shows a block diagram depicting embodiments of a UE according to embodiments herein.
  • Fig. 14 shows a block diagram depicting embodiments of a radio network node according to embodiments herein.
  • one or more UEs such as a user equipment (UE) 10 exemplified herein as a wireless device such as a mobile station, a non-access point (non- AP) station (STA), a STA and/or a wireless terminal, are comprised communicating via e.g. one or more Access Networks (AN), e.g. radio access network (RAN), to one or more core networks (CN).
  • AN e.g. radio access network
  • CN core networks
  • UE is a non-limiting term which means any terminal, wireless communications terminal, user equipment, narrowband internet of things (NB- loT) device, Machine Type Communication (MTC) device, Device to Device (D2D) terminal, or node e.g.
  • the wireless communication network 1 comprises a first radio network node 12, providing radio coverage over a geographical area, a first service area 11 or first cell, of a first radio access technology (RAT), such as NR, LTE, or similar.
  • the first radio network node 12 may be a transmission and reception point such as an access node, an access controller, a base station, A NG-RAN node, e.g.
  • a radio base station such as a gNodeB (gNB), an evolved Node B (eNB, eNode B), a NodeB, a base transceiver station, a radio remote unit, an Access Point Base Station, a NG-RAN-CU-UP node, base station router, a Wireless Local Area Network (WLAN) access point or an Access Point Station (AP STA), a transmission arrangement of a radio base station, a stand-alone access point or any other network unit or node capable of communicating with a UE within the area served by the first radio network node depending e.g. on the first radio access technology and terminology used.
  • gNB gNodeB
  • eNB evolved Node B
  • NodeB a NodeB
  • a base transceiver station such as a radio remote unit, an Access Point Base Station, a NG-RAN-CU-UP node, base station router, a Wireless Local Area Network (WLAN) access point or an Access Point Station (AP STA),
  • the first radio network node may be referred to as a primary node, primary radio network node wherein the service area may be referred to as a primary serving cell, and the primary node communicates with the wireless device in form of DL transmissions to the wireless device and UL transmissions from the wireless device.
  • a service area may be denoted as cell, beam, beam group or similar to define an area of radio coverage.
  • the wireless communication network 1 comprises a second radio network node 13, providing radio coverage over a geographical area, a second service area 14 or second cell, of a second radio access technology (RAT), such as NR, LTE, or similar.
  • the second radio network node 13 may be a transmission and reception point such as an access node, an access controller, a base station, e.g.
  • a radio base station such as a gNodeB (gNB), an evolved Node B (eNB, eNode B), a NodeB, a base transceiver station, a radio remote unit, a NG-RAN-CU-CP node, an Access Point Base Station, a base station router, a Wireless Local Area Network (WLAN) access point or an Access Point Station (AP STA), a transmission arrangement of a radio base station, a stand-alone access point or any other network unit or node capable of communicating with a wireless device within the area served by the second radio network node depending e.g. on the first radio access technology and terminology used.
  • gNB gNodeB
  • eNB evolved Node B
  • eNode B evolved Node B
  • NodeB a NodeB
  • a base transceiver station such as a radio remote unit, a NG-RAN-CU-CP node, an Access Point Base Station, a base station router, a Wireless Local Area Network (W
  • the second radio network node may be referred to as a secondary or secondary serving radio network node, wherein the service area may be referred to as a secondary cell or secondary serving cell, and the second radio network node communicates with the UE in form of DL transmissions to the UE and UL transmissions from the UE.
  • a service area may be denoted as cell, beam, beam group or similar to define an area of radio coverage.
  • Fig. 9 is combined flowchart and signalling scheme according to some embodiments herein.
  • the UE 10 selects or determines the RO and the PRACH preamble for transmission.
  • the UE 10 selects the RO and the PRACH preamble from the first and/or second PRACH configuration. The selection may be based on the first and second PRACH configurations and/or the capability of the UE 10.
  • the RO and PRACH preamble may be selected based on one or more prioritization rules.
  • the one or more prioritization rules may define that:
  • ⁇ An estimated geographical position
  • ⁇ An estimate of signal to interference plus noise ratio, SI NR, at a first RO and/or a second RO;
  • CBRA Contention-based random access
  • CFRA Contention-free random access
  • the UE 10 may receive a selection indication from the radio network node 12, which selection indicates which of the two PRACH configurations should be prioritized.
  • the UE 10 then performs a random access using the selected RO and PRACH preamble.
  • A5. The method according to any of the embodiments A1-A4, and where the UE 10 selects a SBFD RO or SBFD PRACH format based on one or more of: a.
  • a specification specifying the PRACH prioritization order among ROs and PRACH formats b.
  • An estimate of a distance and/or pathloss to the network node c.
  • An estimated geographical position (from GNSS) d.
  • a previous attempt at PRACH at a previous RO or PRACH configuration f.
  • the radio network node 12 transmits to the UE 10 the indication, such as a value or an index value, indicating the first PRACH configuration.
  • the radio network node 12 transmits to the UE 10, the indication of the second PRACH configuration.
  • the second PRACH configuration may comprise a SBFD PRACH configuration.
  • the radio network node 12 may further inform the UE 10 about one or more prioritization rules to use between the legacy PRACH and the novel SBFD PRACH.
  • Fig. 12 presents a flowchart of an exemplary embodiment herein.
  • the UE 10 receives a first (legacy) PRACH configuration, including, e.g., an indication of a set of ROs, PRACH format to use, SSB-to-PRACH mapping etc.
  • the PRACH configuration may be received in a system information block, particularly in a SIB1 message.
  • the UE 10 receives a configuration of a second (SBFD) PRACH configuration, including, e.g., an indication of a set of ROs, PRACH format and SSB-to-PRACH mapping.
  • SBFD second
  • Parts of the second PRACH configuration may be inherited from the first PRACH configuration, such that some of the information from the first configuration is also used for the second configuration.
  • This PRACH configuration may also be received in a SIB1 message or alternatively by UE specific RRC signaling.
  • the UE 10 determines a preferred SSB to which the PRACH should be associated.
  • the preferred SSB is the strongest received SSB, i.e. , the SSB with the best reference signal received power (RSRP) or reference signal received quality (RSRQ), among the received SSBs of a cell.
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • the preferred SSB may further be selected among different cells such that the strongest SSB over all cells is selected.
  • valid and/or related ROs for both PRACH configurations are determined.
  • Validation may depend on the slot or symbol being an UL slot or UL symbol or an UL subband slot or an UL subband symbol.
  • Validation may further depend on a time frequency location in relation to an SSB, or an order among all valid ROs in relation to SSBs such that, e.g., the first and second ROs are associated with the first SSB, the third and fourth ROs to the second SSB, and so on.
  • the SSB-to-RO mapping may be provided as a part of the PRACH configuration.
  • the UE 10 determines in which RO to transmit and which PRACH preamble to transmit. The selection may be done based on one or more of the following one or more prioritization rules or criteria: a. A specification, in which an order of prioritization is specified based on the first and second PRACH configurations. b. An estimate of distance and/or pathloss to the node such that a longer distance or a higher pathloss implies using the longer PRACH format of the first and second PRACH configurations. c. A received signal level such as RSRP, of a DL signal, such as an SSB. If the signal level is below a threshold the UE selects the longer PRACH format. d.
  • RSRP received signal level
  • a DL signal such as an SSB
  • An estimated location such that a certain (more distant) location implies using the longer PRACH format of the first and second PRACH configurations.
  • An estimated SI NR at previous ROs associated to the first and second PRACH configurations such that the previous ROs associated to the first or the second PRACH configuration with a higher SINR compared to the other implies a preference to use such a later RO.
  • a previous attempt at transmitting a PRACH preamble at a previous RO associated to the first or the second PRACH configuration such that a failed attempt for an RO associated to one PRACH configuration implies attempting to transmitting a PRACH preamble in an RO associated with the other PRACH configuration.
  • the duration to an RO associated with the first and second PRACH configurations such that an earlier RO and its associated PRACH format is preferred to a later RO.
  • Contention-based random access (CBRA) or contention-free random access (CFRA) such that an RO is selected based on whether it is one or the other.
  • CBRA Contention-based random access
  • CFRA contention-free random access
  • an extra bit is used to indicate whether to use the UL subband or the UL slot for CFRA.
  • Fig. 13 is a block diagram depicting the UE 10 for handling communication in the wireless communication network 1 according to embodiments herein.
  • the UE 10 and/or the processing circuitry 1301 is configured to obtain the indication of the second PRACH configuration.
  • the second PRACH configuration may comprise a SBFD PRACH configuration.
  • the second PRACH configuration may be received from the radio network node 12 or be determined based on the first PRACH configuration.
  • the second PRACH configuration may be deduced automatically by the UE 10 based on first PRACH configuration.
  • the UE 10 and/or the processing circuitry 1301 may be configured to receive the preferred SSB.
  • the preferred SSB may be the strongest received SSB.
  • the UE 10 and/or the processing circuitry 1301 may be configured to determine one or more valid ROs for the preferred SSB. This may be determined based on both PRACH configurations and the preferred SSB.
  • the UE 10 and/or the processing circuitry 1301 is configured to select or determine the RO and PRACH preamble for transmission. This may be based on the first and second PRACH configurations and/or capability of the UE.
  • the UE 10 and/or the processing circuitry 1301 may be configured to select the RO and the PRACH preamble from the first and/or second PRACH configuration. The selection may be based on the first and second PRACH configurations and/or the capability of the UE.
  • the RO and PRACH preamble may be selected based on one or more prioritization rules.
  • the one or more prioritization rules may define that:
  • the UE 10 and/or the processing circuitry 1301 is configured to perform a random access using the selected RO and PRACH preamble.
  • the computer program product 1307 may be stored on a computer- readable storage medium 1308, e.g., a disc, a universal serial bus (USB) stick or similar.
  • the computer-readable storage medium 1308, having stored thereon the computer program product may comprise the instructions which, when executed on at least one processor, cause the at least one processor to carry out the actions described herein, as performed by the UE 10.
  • the computer-readable storage medium may be a transitory or a non-transitory computer-readable storage medium.
  • embodiments herein may disclose the UE for handling communication in a wireless communication network, wherein UE comprises processing circuitry and a memory, said memory comprising instructions executable by said processing circuitry whereby said UE is operative to perform any of the methods herein.
  • the radio network node 12 may comprise processing circuitry 1401 , e.g., one or more processors, configured to perform the methods herein.
  • processing circuitry 1401 e.g., one or more processors, configured to perform the methods herein.
  • the radio network node 12 and/or the processing circuitry 1401 is configured to transmit to the UE 10, the indication of the second PRACH configuration.
  • the second PRACH configuration may comprise a SBFD PRACH configuration.
  • wireless device or user equipment refers to any type of wireless device communicating with a network node and/or with another wireless device in a cellular or mobile communication system.
  • UE refers to any type of wireless device communicating with a network node and/or with another wireless device in a cellular or mobile communication system.
  • Examples of UE are target device, device to device (D2D) UE, proximity capable UE (aka ProSe UE), loT capable device, machine type UE or UE capable of machine to machine (M2M) communication, Tablet, mobile terminals, smart phone, laptop embedded equipped (LEE), laptop mounted equipment (LME), USB dongles etc.
  • computing devices described herein may include the illustrated combination of hardware components, other embodiments may comprise computing devices with different combinations of components. It is to be understood that these computing devices may comprise any suitable combination of hardware and/or software needed to perform the tasks, features, functions and methods disclosed herein. Determining, calculating, obtaining or similar operations described herein may be performed by processing circuitry, which may process information by, for example, converting the obtained information into other information, comparing the obtained information or converted information to information stored in the network node, and/or performing one or more operations based on the obtained information or converted information, and as a result of said processing making a determination.
  • processing circuitry may process information by, for example, converting the obtained information into other information, comparing the obtained information or converted information to information stored in the network node, and/or performing one or more operations based on the obtained information or converted information, and as a result of said processing making a determination.
  • processing circuitry executing instructions stored on in memory, which in certain embodiments may be a computer program product in the form of a non-transitory computer-readable storage medium.
  • some or all of the functionality may be provided by the processing circuitry without executing instructions stored on a separate or discrete device-readable storage medium, such as in a hard-wired manner.
  • the processing circuitry can be configured to perform the described functionality. The benefits provided by such functionality are not limited to the processing circuitry alone or to other components of the computing device, but are enjoyed by the computing device as a whole, and/or by end users and a wireless network generally.
  • a method performed by a UE for handling communication in a wireless communication network comprising receiving an indication of a first PRACH configuration; obtaining an indication of a second PRACH configuration. determining an RO and PRACH preamble for transmission based on the first and/or second PRACH configuration; and performing a random access using the determined RO and PRACH preamble.
  • a method performed by a radio network node for handling communication in a wireless communication network comprising transmitting an indication indicating a first PRACH configuration to a UE; and transmitting to the UE, an indication of a second PRACH configuration.
  • a UE for handling communication in a wireless communication network wherein the UE is configured to: receive an indication of a first PRACH configuration; obtain an indication of a second PRACH configuration; determine an RO and PRACH preamble for transmission based on the first and/or second PRACH configuration; and perform a random access using the determined RO and PRACH preamble.
  • a radio network node for handling communication in a wireless communication network wherein the radio network node is configured to transmit an indication indicating a first PRACH configuration to a UE; and transmit to the UE, an indication of a second PRACH configuration.
  • a computer-readable storage medium having stored thereon a computer program product comprising instructions which, when executed on at least one processor, cause the at least one processor to carry out the method according to any of the embodiments A1-A4, and B1-B2, as performed by the UE and the radio network node, respectively.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

Des modes de réalisation décrits ici concernent, par exemple, un procédé exécuté par un UE (10) pour gérer une communication dans un réseau de communication sans fil. L'UE (10) reçoit une indication d'une première configuration de PRACH. L'UE (10) obtient une indication d'une seconde configuration de PRACH. L'UE (10) sélectionne une RO et un préambule de PRACH pour une transmission à partir de la première et/ou de la seconde configuration de PRACH, et effectue un accès aléatoire à l'aide de la RO et du préambule de PRACH sélectionnés.
PCT/SE2025/050133 2024-02-16 2025-02-17 Équipement utilisateur, nœud de réseau radio et procédés de configuration de prach Pending WO2025174320A1 (fr)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2562100A (en) * 2017-05-05 2018-11-07 Tcl Communication Ltd Methods and apparatuses for random-access
WO2020060463A1 (fr) * 2018-09-18 2020-03-26 Telefonaktiebolaget Lm Ericsson (Publ) Amélioration de la résistance au brouillage d'un canal physique d'accès aléatoire (prach)
WO2022221984A1 (fr) * 2021-04-19 2022-10-27 Qualcomm Incorporated Configuration d'accès aléatoire et procédure en fonctionnement en duplex intégral
US20230054111A1 (en) * 2021-08-04 2023-02-23 Samsung Electronics Co., Ltd. Random access procedure for full-duplex operation
WO2023030654A1 (fr) * 2021-09-03 2023-03-09 Nokia Technologies Oy Transmission de préambule sur une occasion de canal d'accès aléatoire se chevauchant avec des symboles de liaison descendante
EP4271106A1 (fr) * 2022-04-28 2023-11-01 Nokia Technologies Oy Gestion d'interférence de liaison croisée sur des occasions de canal d'accès aléatoire physique sur des créneaux de duplexage flexibles/intégrales
WO2023211182A1 (fr) * 2022-04-28 2023-11-02 삼성전자 주식회사 Procédé et dispositif d'accès aléatoire dans un système de communication sans fil
WO2024035329A1 (fr) * 2022-08-12 2024-02-15 Telefonaktiebolaget Lm Ericsson (Publ) Canal physique d'accès aléatoire (prach) pour fonctionnement en duplex intégral de sous-bande
WO2024092798A1 (fr) * 2022-11-04 2024-05-10 Nokia Shanghai Bell Co., Ltd. Fonctionnement de canal d'accès aléatoire physique flexible
WO2024192688A1 (fr) * 2023-03-21 2024-09-26 Nec Corporation Dispositif, procédé et support lisible par ordinateur pour communication

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2562100A (en) * 2017-05-05 2018-11-07 Tcl Communication Ltd Methods and apparatuses for random-access
WO2020060463A1 (fr) * 2018-09-18 2020-03-26 Telefonaktiebolaget Lm Ericsson (Publ) Amélioration de la résistance au brouillage d'un canal physique d'accès aléatoire (prach)
WO2022221984A1 (fr) * 2021-04-19 2022-10-27 Qualcomm Incorporated Configuration d'accès aléatoire et procédure en fonctionnement en duplex intégral
US20230054111A1 (en) * 2021-08-04 2023-02-23 Samsung Electronics Co., Ltd. Random access procedure for full-duplex operation
WO2023030654A1 (fr) * 2021-09-03 2023-03-09 Nokia Technologies Oy Transmission de préambule sur une occasion de canal d'accès aléatoire se chevauchant avec des symboles de liaison descendante
EP4271106A1 (fr) * 2022-04-28 2023-11-01 Nokia Technologies Oy Gestion d'interférence de liaison croisée sur des occasions de canal d'accès aléatoire physique sur des créneaux de duplexage flexibles/intégrales
WO2023211182A1 (fr) * 2022-04-28 2023-11-02 삼성전자 주식회사 Procédé et dispositif d'accès aléatoire dans un système de communication sans fil
WO2024035329A1 (fr) * 2022-08-12 2024-02-15 Telefonaktiebolaget Lm Ericsson (Publ) Canal physique d'accès aléatoire (prach) pour fonctionnement en duplex intégral de sous-bande
WO2024092798A1 (fr) * 2022-11-04 2024-05-10 Nokia Shanghai Bell Co., Ltd. Fonctionnement de canal d'accès aléatoire physique flexible
WO2024192688A1 (fr) * 2023-03-21 2024-09-26 Nec Corporation Dispositif, procédé et support lisible par ordinateur pour communication

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