WO2023070384A1 - Procédé, dispositif et support lisible par ordinateur pour des communications - Google Patents

Procédé, dispositif et support lisible par ordinateur pour des communications Download PDF

Info

Publication number
WO2023070384A1
WO2023070384A1 PCT/CN2021/126788 CN2021126788W WO2023070384A1 WO 2023070384 A1 WO2023070384 A1 WO 2023070384A1 CN 2021126788 W CN2021126788 W CN 2021126788W WO 2023070384 A1 WO2023070384 A1 WO 2023070384A1
Authority
WO
WIPO (PCT)
Prior art keywords
prach
repetition
terminal device
occasion
occasions
Prior art date
Application number
PCT/CN2021/126788
Other languages
English (en)
Inventor
Gang Wang
Lin Liang
Original Assignee
Nec Corporation
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 Nec Corporation filed Critical Nec Corporation
Priority to PCT/CN2021/126788 priority Critical patent/WO2023070384A1/fr
Publication of WO2023070384A1 publication Critical patent/WO2023070384A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26132—Structure of the reference signals using repetition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/2615—Reduction thereof using coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • Embodiments of the present disclosure generally relate to the field of telecommunication, and in particular, to methods, devices and computer storage media for communication.
  • a physical random-access channel is a shared channel used by terminal devices to access the mobile network for cell set-up and burst data transmission.
  • PRACH physical random-access channel
  • embodiments of the present disclosure provide methods, devices and computer storage media for communications.
  • a method of communication comprises: receiving, at a terminal device and from a network device, a first configuration indicating a physical random access channel (PRACH) repetition pattern; receiving, at the terminal device and from the network device, a second configuration indicating: one or more PRACH occasion sets and a frequency location of the one or more PRACH occasion sets, wherein each PRACH occasion set comprises a plurality of PRACH occasions; and performing at least one PRACH repetition within the one or more PRACH occasion sets based on the PRACH repetition pattern, wherein the at least one PRACH repetition is with phase continuity within at least one of the one or more PRACH occasion sets.
  • PRACH physical random access channel
  • a method of communication comprises: transmitting, at a network device and to a terminal device, a first configuration indicating a physical random access channel (PRACH) repetition pattern; transmitting, at the network device and to the terminal device, a second configuration indicating: one or more PRACH occasion sets and a frequency location of the one or more PRACH occasion sets, wherein each PRACH occasion set comprises a plurality of PRACH occasions; and receiving, from the terminal device, at least one PRACH repetition within the one or more PRACH occasion sets based on the PRACH repetition pattern , wherein the at least one PRACH repetition is with phase continuity within at least one of the one or more PRACH occasion sets.
  • PRACH physical random access channel
  • a terminal device comprising a processor and a memory coupled to the processor.
  • the memory stores instructions that when executed by the processor, cause the terminal device to perform: receiving, from a network device, a first configuration indicating a physical random access channel (PRACH) repetition pattern; receiving, at the terminal device and from the network device, a second configuration indicating: one or more PRACH occasion sets and a frequency location of the one or more PRACH occasion sets, wherein each PRACH occasion set comprises a plurality of PRACH occasions; and performing at least one PRACH repetition within the one or more PRACH occasion sets based on the PRACH repetition pattern, wherein the at least one PRACH repetition is with phase continuity within at least one of the one or more PRACH occasion sets.
  • PRACH physical random access channel
  • a network device comprising a processor and a memory coupled to the processor.
  • the memory stores instructions that when executed by the processor, cause the network device to perform: transmitting, to a terminal device, a first configuration indicating a physical random access channel (PRACH) repetition pattern; transmitting, at the network device and to the terminal device, a second configuration indicating: one or more PRACH occasion sets and a frequency location of the one or more PRACH occasion sets, wherein each PRACH occasion set comprises a plurality of PRACH occasions; and receiving, from the terminal device, at least one PRACH repetition within the one or more PRACH occasion sets based on the PRACH repetition pattern , wherein the at least one PRACH repetition is with phase continuity within at least one of the one or more PRACH occasion sets.
  • PRACH physical random access channel
  • a computer readable medium having instructions stored thereon.
  • the instructions when executed on at least one processor, cause the at least one processor to perform the method according to the first or second aspect of the present disclosure.
  • Fig. 1 illustrates a transmission with phase discontinuity according to conventional technologies
  • Fig. 2 is a schematic diagram of a communication environment in which embodiments of the present disclosure can be implemented;
  • Fig. 3 illustrates a signaling flow for communications between devices in accordance with some embodiments of the present disclosure
  • Fig. 4 shows a schematic diagram of PRACH occasions in accordance with some embodiments of the present disclosure
  • Fig. 5 illustrates a flow chart of an example method of communication implemented at a terminal device in accordance with some embodiments of the present disclosure
  • Fig. 6 illustrates a flow chart of an example method of communication implemented at a network device in accordance with some embodiments of the present disclosure.
  • Fig. 7 is a simplified block diagram of a device that is suitable for implementing embodiments of the present disclosure.
  • terminal device refers to any device having wireless or wired communication capabilities.
  • the terminal device include, but not limited to, user equipment (UE) , personal computers, desktops, mobile phones, cellular phones, smart phones, personal digital assistants (PDAs) , portable computers, tablets, wearable devices, internet of things (Iota) devices, Internet of Everything (Iowa) devices, machine type communication (MTC) devices, device on vehicle for V2X communication where X means pedestrian, vehicle, or infrastructure/network, or image capture devices such as digital cameras, gaming devices, music storage and playback appliances, or Internet appliances enabling wireless or wired Internet access and browsing and the like.
  • UE user equipment
  • PDAs personal digital assistants
  • portable computers tablets, wearable devices, internet of things (Iota) devices, Internet of Everything (Iowa) devices, machine type communication (MTC) devices, device on vehicle for V2X communication where X means pedestrian, vehicle, or infrastructure/network, or image capture devices such as digital cameras, gaming devices, music storage and playback appliances,
  • terminal device can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device.
  • network device refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate.
  • Examples of a network device include, but not limited to, a Node B (Node or NB) , an Evolved Node (anode or eNB) , a next generation Node (gNB) , a Transmission Reception Point (TRP) , a Remote Radio Unit (RRU) , a radio head (RH) , a remote radio head (RRH) , a low power node such as a femto node, a pico node, and the like.
  • Node B Node or NB
  • an Evolved Node anode or eNB
  • gNB Transmission Reception Point
  • RRU Remote Radio Unit
  • RH radio head
  • RRH remote radio head
  • a low power node such as a femto node, a pico node, and the like.
  • the terminal device may be connected with a first network device and a second network device.
  • One of the first network device and the second network device may be a master node and the other one may be a secondary node.
  • the first network device and the second network device may use different radio access technologies (RATs) .
  • the first network device may be a first RAT device and the second network device may be a second RAT device.
  • the first RAT device is eNB and the second RAT device is gNB.
  • Information related with different RATs may be transmitted to the terminal device from at least one of the first network device and the second network device.
  • first information may be transmitted to the terminal device from the first network device and second information may be transmitted to the terminal device from the second network device directly or via the first network device.
  • information related with configuration for the terminal device configured by the second network device may be transmitted from the second network device via the first network device.
  • Information related with reconfiguration for the terminal device configured by the second network device may be transmitted to the terminal device from the second network device directly or via the first network device.
  • the singular forms ‘a’ , ‘an’ and ‘the’ are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the term ‘includes’ and its variants are to be read as open terms that mean ‘includes, but is not limited to. ’
  • the term ‘based on’ is to be read as ‘at least in part based on. ’
  • the term ‘one embodiment’ and ‘an embodiment’ are to be read as ‘at least one embodiment. ’
  • the term ‘another embodiment’ is to be read as ‘at least one other embodiment. ’
  • the terms ‘first, ’ ‘second, ’ and the like may refer to different or same objects. Other definitions, explicit and implicit, may be included below.
  • values, procedures, or apparatus are referred to as ‘best, ’ ‘lowest, ’ ‘highest, ’ ‘minimum, ’ ‘maximum, ’ or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
  • circuitry used herein may refer to hardware circuits and/or combinations of hardware circuits and software.
  • the circuitry may be a combination of analog and/or digital hardware circuits with software/firmware.
  • the circuitry may be any portions of hardware processors with software including digital signal processor (s) , software, and memory (ies) that work together to cause an apparatus, such as a terminal device or a network device, to perform various functions.
  • the circuitry may be hardware circuits and or processors, such as a microprocessor or a portion of a microprocessor, that requires software/firmware for operation, but the software may not be present when it is not needed for operation.
  • the term circuitry also covers an implementation of merely a hardware circuit or processor (s) or a portion of a hardware circuit or processor (s) and its (or their) accompanying software and/or firmware.
  • Random Access Procedure can be contention based (CBRA) or contention free (CFRA) .
  • PRACH enhancements have been studied from several aspects, including multiple PRACH transmissions with the same beam, multiple PRACH transmissions with different beams, and PRACH enhancements with finer beam.
  • the network may configure PRACH format.
  • NR has many PRACH format, including format 0-4, format A1-A3, format B1-B4 and format C0, C2.
  • a PRACH transmission except for format A series comprise cyclic prefix (CP) part, core part and guard period (GP) part.
  • CP part is cyclic shift from the end of core part and GP part is guard period that UE transmits nothing during GP part.
  • PRACH format A has no GP part and duration is 2 symbols for A1, 4 symbols for A2 and 6 symbols for A3.
  • the network provides PRACH configuration in System Information, frequency and time continuous resources within a slot may be configured as PRACH occasions.
  • a terminal device receives, from a network device, a first configuration indicating a physical random access channel (PRACH) repetition pattern.
  • the terminal device receives a second configuration.
  • the second configuration indicates: one or more PRACH occasion sets and a frequency location of the one or more PRACH occasion sets.
  • Each PRACH occasion set comprises a plurality of PRACH occasions.
  • the terminal device performs at least one PRACH repetition within the one or more PRACH occasion sets based on the PRACH repetition pattern.
  • the at last one PRACH repetition is with phase continuity within in each PRACH occasion set. In this way, Phase continuity is benefit for network to combine power more efficient from multiple repetitions in some cases.
  • Fig. 2 illustrates a schematic diagram of a communication system in which embodiments of the present disclosure can be implemented.
  • the communication system 100 which is a part of a communication network, comprises a terminal device 110-1, a terminal device 110-2, ..., a terminal device 110-N, which can be collectively referred to as “terminal device (s) 110. ”
  • the number N can be any suitable integer number.
  • the communication system 100 further comprises a network device 120.
  • the network devices 120 and the terminal devices 110 can communicate data and control information to each other.
  • the numbers of devices shown in Fig. 1 are given for the purpose of illustration without suggesting any limitations.
  • Communications in the communication system 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • s cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • IEEE Institute for Electrical and Electronics Engineers
  • the communication may utilize any proper wireless communication technology, comprising but not limited to: Code Divided Multiple Address (CDMA) , Frequency Divided Multiple Address (FDMA) , Time Divided Multiple Address (TDMA) , Frequency Divided Duplexer (FDD) , Time Divided Duplexer (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Divided Multiple Access (OFDMA) and/or any other technologies currently known or to be developed in the future.
  • CDMA Code Divided Multiple Address
  • FDMA Frequency Divided Multiple Address
  • TDMA Time Divided Multiple Address
  • FDD Frequency Divided Duplexer
  • TDD Time Divided Duplexer
  • MIMO Multiple-Input Multiple-Output
  • OFDMA Orthogonal Frequency Divided Multiple Access
  • Embodiments of the present disclosure can be applied to any suitable scenarios.
  • embodiments of the present disclosure can be implemented at NR IIoT/URLLC.
  • embodiments of the present disclosure can be implemented in one of the followings: reduced capability NR devices, NR multiple-input and multiple-output (MIMO) , NR sidelink enhancements, NR systems with frequency above 52.6GHz, an extending NR operation up to 71GHz, narrow band-Internet of Thing (NB-IOT) /enhanced Machine Type Communication (eMTC) over non-terrestrial networks (NTN) , NTN, UE power saving enhancements, NR coverage enhancement, NB-Iota and LTE-MTC, Integrated Access and Backhaul (IAB) , NR Multicast and Broadcast Services, or enhancements on Multi-Radio Dual-Connectivity.
  • NB-IOT narrow band-Internet of Thing
  • eMTC enhanced Machine Type Communication
  • NTN non-terrestrial networks
  • IAB Integrated Access and Backha
  • Fig. 3 shows a signaling chart illustrating process 300 among devices according to some example embodiments of the present disclosure. Only for the purpose of discussion, the process 300 will be described with reference to Fig. 2. The process 300 may involve the terminal device 110-1 and the network device 120 in Fig. 2. It should be noted that the process 300 is only an example not limitation.
  • the network device 120 determines 2010 a PRACH repetition pattern.
  • the PRACH repetition pattern comprises a first list of resource sets.
  • the PRACH repetition pattern may comprise a set of PRACH occasions for the PRACH repetition.
  • the PRACH repetition pattern can comprise a set of preambles for the PRACH repetition.
  • the term “PRACH occasion” used herein can refer to a time and frequency domain resource where the terminal device is able to transmission a preamble.
  • the resources for the PRACH repetition may be the same beam. Alternatively, the resources for the PRACH repetition may be different beams.
  • the PRACH repetition pattern may indicate: the maximum number of repetitions N, a preamble M, a starting PRACH occasion S and a delta D.
  • the PRACH occasions 310-1, 310-3., 310-5, 310-7, 310-9, 310-11, 310-13 and 310-15 are on the first beam
  • the PRACH occasions 310-2, 310-4, 310-6, 310-8, 310-10, 310-12, 310-14 and 310-16 are on the second beam.
  • the network device 120 determines 2020 a PRACH occasion set.
  • the PRACH occasion set can also be referred to as “PRACH bundling” .
  • the PRACH occasion set can comprise a plurality of PRACH occasions.
  • the plurality of PRACH occasions care continuous in time domain.
  • the plurality of PRACH occasions can be with a same frequency.
  • the plurality of PRACH occasions can be with a same TCI state.
  • the plurality of PRACH occasions can be at the same beam.
  • the PRACH occasions 310-1 and 310-5 are continuous time domain.
  • the PRACH occasions 310-1 and 310-5 may occupy same frequency resources.
  • the PRACH occasions 310-1 and 310-5 may also have the same TCI state, i.e., on the same beam.
  • the PRACH occasions 310-1 and 310-5 can be in the PRACH occasion set.
  • the PRACH occasions 310-9 and 310-15 can be in another PRACH occasion set.
  • the PRACH occasions 310-5 and 310-9 may occupy same frequency resources and may have the same TCI state.
  • the PRACH occasions 310-5 and 310-9 cannot be determined into one PRACH occasion set.
  • the network device 120 transmits 2030 the first configuration to the terminal device 110-1.
  • the first configuration can be transmitted in RRC signaling.
  • the network device 120 transmits 2040 a second configuration to the terminal device 110-1.
  • the second configuration indicates one or more PRACH occasion set. As shown in Fig. 4, the second configuration may indicate the PRACH occasion set 410 and the PRACH occasion set 420 within the PRACH repetition 430. It should be noted that the number of PRACH occasion sets are only an example.
  • the second configuration may indicate a parameter of the PRACH occasion set.
  • the second configuration may indicate the number of continuous PRACH occasions (for example, two as shown in Fig. 4) .
  • the second configuration also indicates a frequency location of the one or more PRACH occasion sets.
  • the terminal device 110-1 performs 2050 at least one PRACH repetition within the one or more PRACH occasions sets with phase continuity based on the PRACH repetition pattern. In this way, phase continuity within PRACH occasion bundling is stratified which has benefit to combine receiving power and increase detection performance by network.
  • the terminal device 110-1 may generate generating a baseband signal for PRACH.
  • the time-continuous signal on antenna port p for PRACH is defined by:
  • signal time can span across PRACH occasion until a PRACH bundling.
  • the CP length of PRACH signal in PRACH bundling is the same as CP length in PO l1.
  • the terminal device 110-1 may generate a baseband signal for the PRAHC repetition based on:
  • the terminal device 110-1 may OFDM baseband signal for PRACH. If PRACH bundling is configured, signal time can span across PRACH occasion until a PRACH bundling.
  • the CP length of PRACH signal in PRACH bundling is the sum of CP length from PO l1 to PO l2.
  • the terminal device 110-1 may generate a baseband signal for the PRAHC repetition based on:
  • the network device 120 may transmit a third configuration to the terminal device 110-1.
  • the third configuration may indicate a first PRACH format.
  • the terminal device 110-1 may perform the PRACH repetition within the PRACH occasion set using the second PRACH format.
  • the terminal device 1101-1 may transmit PRACH on PRACH bundling using the second PRACH format.
  • PRACH format A1 is configured for each PRACH occasion which has 2 symbols.
  • a PRACH bundling is configured comprising of 2 PRACH occasions which means 4 symbols.
  • the terminal device 1101-1 may transmit PRACH on PRACH bundling as if a PRACH occasion with PRACH format A2 was configured.
  • PRACH format used herein can refer preamble format. Differences in the time domain of different preamble formats includes different CP length, Sequence Length, GP length and number of repetitions.
  • Fig. 5 shows a flowchart of an example method 500 in accordance with an embodiment of the present disclosure. Only for the purpose of illustrations, the method 500 can be implemented at a terminal device 110-1 as shown in Fig. 2.
  • the terminal device 120 receives a first configuration from the network device 120.
  • the first configuration can be transmitted in RRC signaling.
  • the PRACH repetition pattern comprises a first list of resource sets.
  • the PRACH repetition pattern may comprise a set of PRACH occasions for the PRACH repetition.
  • the PRACH repetition pattern can comprise a set of preambles for the PRACH repetition.
  • the term “PRACH occasion” used herein can refer to a time and frequency domain resource where the terminal device is able to transmission a preamble.
  • the resources for the PRACH repetition may be the same beam. Alternatively, the resources for the PRACH repetition may be different beams.
  • the PRACH repetition pattern may indicate: the maximum number of repetitions N, a preamble M, a starting PRACH occasion S and a delta D.
  • the terminal device 120 receives a second configuration from the network device 120.
  • the second configuration indicates one or more PRACH occasion set.
  • the PRACH occasion set can also be referred to as PRACH bundling.
  • the PRACH occasion set can comprise a plurality of PRACH occasions.
  • the plurality of PRACH occasions can be continuous in time domain.
  • the plurality of PRACH occasions can be with a same frequency and a same TCI state.
  • the second configuration may indicate a parameter of the PRACH occasion set.
  • the second configuration may indicate the number of continuous PRACH occasions.
  • the second configuration also indicates a frequency location of the one or more PRACH occasion sets.
  • the terminal device 110-1 performs at least one PRACH repetition within the one or more PRACH occasions sets with phase continuity based on the PRACH repetition pattern. In this way, phase continuity within PRACH occasion bundling is stratified which has benefit to combine receiving power and increase detection performance by network.
  • the terminal device 110-1 may generate generating OFDM baseband signal for PRACH. If PRACH bundling is configured, signal time can span across PRACH occasion until a PRACH bundling. In some embodiments, a CP length of the baseband signal in one PRACH occasion set can be same as CP length in one PRACH occasion.
  • the terminal device 110-1 may OFDM baseband signal for PRACH.
  • PRACH bundling is configured, signal time can span across PRACH occasion until a PRACH bundling.
  • a CP length of the baseband signal in one PRACH occasion set can be same as a sum of CP length in the plurality of PRACH occasions in the PRACH occasion set.
  • the network device 120 may transmit a third configuration to the terminal device 110-1.
  • the third configuration may indicate a first PRACH format.
  • the terminal device 110-1 may perform the PRACH repetition within the PRACH occasion set using the second PRACH format.
  • the terminal device 1101-1 may transmit PRACH on PRACH bundling using the second PRACH format.
  • PRACH format A1 is configured for each PRACH occasion which has 2 symbols.
  • a PRACH bundling is configured comprising of 2 PRACH occasions which means 4 symbols. Then the terminal device 1101-1 may transmit PRACH on PRACH bundling as if a PRACH occasion with PRACH format A2 was configured.
  • Fig. 6 shows a flowchart of an example method 600 in accordance with an embodiment of the present disclosure. Only for the purpose of illustrations, the method 600 can be implemented at a network device 120 as shown in Fig. 2.
  • the network device 120 transmits the first configuration to the terminal device 110-1.
  • the first configuration can be transmitted in RRC signaling.
  • the network device 120 may determine a PRACH repetition pattern.
  • the PRACH repetition pattern comprises a first list of resource sets.
  • the PRACH repetition pattern may comprise a set of PRACH occasions for the PRACH repetition.
  • the PRACH repetition pattern can comprise a set of preambles for the PRACH repetition.
  • the term “PRACH occasion” used herein can refer to a time and frequency domain resource where the terminal device is able to transmission a preamble.
  • the resources for the PRACH repetition may be the same beam.
  • the resources for the PRACH repetition may be different beams.
  • the PRACH repetition pattern may indicate: the maximum number of repetitions N, a preamble M, a starting PRACH occasion S and a delta D.
  • the network device 120 transmits a second configuration to the terminal device 110-1.
  • the second configuration indicates one or more PRACH occasion set.
  • the network device 120 may determine a PRACH occasion set.
  • the PRACH occasion set can also be named as PRACH bundling.
  • the PRACH occasion set can comprise a plurality of PRACH occasions.
  • the plurality of PRACH occasions can be continuous in time domain.
  • the plurality of PRACH occasions can be with a same frequency and a same TCI state.
  • the second configuration may indicate a parameter of the PRACH occasion set.
  • the second configuration may indicate the number of continuous PRACH occasions (for example, two as shown in Fig. 4) .
  • the second configuration also indicates a frequency location of the one or more PRACH occasion sets.
  • the network device 120 revives at least one PRACH repetition within the one or more PRACH occasions sets based on the PRACH repetition pattern.
  • the at least one PRACH repetition is with phase continuity. In this way, phase continuity within PRACH occasion bundling is stratified which has benefit to combine receiving power and increase detection performance by network.
  • the network device 120 may transmit a third configuration to the terminal device 110-1.
  • the third configuration may indicate a first PRACH format.
  • the terminal device 110-1 may perform the PRACH repetition within the PRACH occasion set using the second PRACH format.
  • the terminal device 1101-1 may transmit PRACH on PRACH bundling using the second PRACH format.
  • PRACH format A1 is configured for each PRACH occasion which has 2 symbols.
  • a PRACH bundling is configured comprising of 2 PRACH occasions which means 4 symbols.
  • the terminal device 1101-1 may transmit PRACH on PRACH bundling as if a PRACH occasion with PRACH format A2 was configured. In this case, the network device 120 may decode the PRACH repetition based on the first PRACH format.
  • a terminal device comprises circuitry configured to receive, from a network device, a first configuration indicating a physical random access channel (PRACH) repetition pattern; receive, at the terminal device and from the network device, a second configuration indicating: one or more PRACH occasion sets and a frequency location of the one or more PRACH occasion sets, wherein each PRACH occasion set comprises a plurality of PRACH occasions; and perform at least one PRACH repetition within the one or more PRACH occasion sets based on the PRACH repetition pattern, wherein the at least one PRACH repetition is with phase continuity within at least one of the one or more PRACH occasion sets.
  • PRACH physical random access channel
  • the plurality of PRACH occasions are continuous in time domain, and the plurality of PRACH occasions are with a same frequency and a same transmission code index (TCI) state.
  • TCI transmission code index
  • the terminal device comprises circuitry configured to perform the at least one PRACH repetition by: generating a baseband signal for the at least one PRACH repetition, where a cyclic prefix (CP) length of the baseband signal in one PRACH occasion set is same as CP length in one PRACH occasion.
  • CP cyclic prefix
  • the terminal device comprises circuitry configured to perform the at least one PRACH repetition by: generating a baseband signal for the at least one PRACH repetition, where a cyclic prefix (CP) length of the baseband signal in one PRACH occasion set is same as a sum of CP length in the plurality of PRACH occasions in the PRACH occasion set.
  • CP cyclic prefix
  • the terminal device comprises circuitry configured to receive, from the network device, a third configuration indicating a first PRACH format; and the terminal device comprises circuitry configured to perform the at least one PRACH repetition by: in accordance with a determination that the number of the PRACH occasion set is same as a second PRACH format, performing the at least one PRACH repetition within the one or more PRACH occasion sets using the second PRACH format.
  • a network device comprises circuitry configured to transmit, to a terminal device, a first configuration indicating a physical random access channel (PRACH) repetition pattern; transmit, at the network device and to the terminal device, a second configuration indicating: one or more PRACH occasion sets and a frequency location of the one or more PRACH occasion sets, wherein each PRACH occasion set comprises a plurality of PRACH occasions; and receive, from the terminal device, at least one PRACH repetition within the one or more PRACH occasion sets based on the PRACH repetition pattern , wherein the at least one PRACH repetition is with phase continuity within at least one of the one or more PRACH occasion sets.
  • PRACH physical random access channel
  • the plurality of PRACH occasions are continuous in time domain, and the plurality of PRACH occasions are with a same frequency and a same transmission code index (TCI) state.
  • TCI transmission code index
  • a cyclic prefix (CP) length of a baseband signal for the at least one PRACH repetition in one PRACH occasion set is same as CP length in one PRACH occasion.
  • a cyclic prefix (CP) length of a baseband signal for the at least one PRACH repetition in one PRACH occasion set is same as a sum of CP length in the plurality of PRACH occasions in the PRACH occasion set.
  • CP cyclic prefix
  • the network device comprises circuitry configured to transmit, to the terminal device, a third configuration indicating a first PRACH format; and the network device comprises circuitry configured to receive the at least one PRACH repetition by: in accordance with a determination that the number of the PRACH occasion set is same as a second PRACH format, receiving the at least one PRACH repetition within the PRACH occasion set using the second PRACH format.
  • Fig. 7 is a simplified block diagram of a device 700 that is suitable for implementing embodiments of the present disclosure.
  • the device 700 can be considered as a further example implementation of the network device 120, or the terminal device 110 as shown in Fig. 2. Accordingly, the device 700 can be implemented at or as at least a part of the terminal device 110, or the network device 120.
  • the device 700 includes a processor 710, a memory 720 coupled to the processor 710, a suitable transmitter (TX) and receiver (RX) 740 coupled to the processor 710, and a communication interface coupled to the TX/RX 740.
  • the memory 710 stores at least a part of a program 730.
  • the TX/RX 740 is for bidirectional communications.
  • the TX/RX 740 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones.
  • the communication interface may represent any interface that is necessary for communication with other network elements, such as X2 interface for bidirectional communications between eNBs, S1 interface for communication between a Mobility Management Entity (MME) /Serving Gateway (S-GW) and the eNB, Un interface for communication between the eNB and a relay node (RN) , or Uu interface for communication between the eNB and a terminal device.
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • Un interface for communication between the eNB and a relay node (RN)
  • Uu interface for communication between the eNB and a terminal device.
  • the program 730 is assumed to include program instructions that, when executed by the associated processor 710, enable the device 700 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to Figs. 2 to 6.
  • the embodiments herein may be implemented by computer software executable by the processor 710 of the device 700, or by hardware, or by a combination of software and hardware.
  • the processor 710 may be configured to implement various embodiments of the present disclosure.
  • a combination of the processor 710 and memory 720 may form processing means adapted to implement various embodiments of the present disclosure.
  • the memory 720 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 720 is shown in the device 700, there may be several physically distinct memory modules in the device 700.
  • the processor 710 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 700 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representation, it will be appreciated that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the process or method as described above with reference to Figs. 3 to 6.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the above program code may be embodied on a machine readable medium, which may be any tangible medium that may contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
  • the machine readable medium may be a machine readable signal medium or a machine readable storage medium.
  • a machine readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing.
  • machine readable storage medium More specific examples of the machine readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read-only memory
  • EPROM or Flash memory erasable programmable read-only memory
  • CD-ROM portable compact disc read-only memory
  • magnetic storage device or any suitable combination of the foregoing.
  • terminal device refers to any device having wireless or wired communication capabilities.
  • the terminal device include, but not limited to, user equipment (UE) , personal computers, desktops, mobile phones, cellular phones, smart phones, personal digital assistants (PDAs) , portable computers, tablets, wearable devices, internet of things (Iota) devices, Ultra-reliable and Low Latency Communications (URLLC) devices, Internet of Everything (Iowa) devices, machine type communication (MTC) devices, device on vehicle for V2X communication where X means pedestrian, vehicle, or infrastructure/network, devices for Integrated Access and Backhaul (IAB) , Space borne vehicles or Air borne vehicles in Non-terrestrial networks (NTN) including Satellites and High Altitude Platforms (HAPs) encompassing Unmanned Aircraft Systems (UAS) , eXtended Reality (XR) devices including different types of realities such as Augmented Reality (AR) , Mixed Reality (MR) and Virtual Reality (VR) , the unmanned aerial vehicle (UAV
  • the ‘terminal device’ can further has ‘multicast/broadcast’ feature, to support public safety and mission critical, V2X applications, transparent IPv4/IPv6 multicast delivery, IPTV, smart TV, radio services, software delivery over wireless, group communications and Iota applications. It may also incorporated one or multiple Subscriber Identity Module (SIM) as known as Multi-SIM.
  • SIM Subscriber Identity Module
  • the term “terminal device” can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device.
  • network device refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate.
  • a network device include, but not limited to, a Node B (Node or NB) , an evolved Node (anode or eNB) , a next generation Node (gNB) , a transmission reception point (TRP) , a remote radio unit (RRU) , a radio head (RH) , a remote radio head (RRH) , an IAB node, a low power node such as a femto node, a pico node, a reconfigurable intelligent surface (RIS) , and the like.
  • Node B Node or NB
  • an evolved Node anode or eNB
  • gNB next generation Node
  • TRP transmission reception point
  • RRU remote radio unit
  • RH radio head
  • RRH remote radio head
  • IAB node a low power node such as a femto node,
  • the terminal device or the network device may have Artificial intelligence (AI) or Machine learning capability. It generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • AI Artificial intelligence
  • Machine learning capability it generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • the terminal or the network device may work on several frequency ranges, e.g. FR1 (410 MHz –7125 MHz) , FR2 (24.25GHz to 71GHz) , frequency band larger than 100GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum.
  • the terminal device may have more than one connections with the network devices under Multi-Radio Dual Connectivity (MR-DC) application scenario.
  • MR-DC Multi-Radio Dual Connectivity
  • the terminal device or the network device can work on full duplex, flexible duplex and cross division duplex modes.
  • test equipment e.g. signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal device, test network device, channel emulator.
  • the embodiments of the present disclosure may be performed according to any generation communication protocols either currently known or to be developed in the future.
  • Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, 5.5G, 5G-Advanced networks, or the sixth generation (6G) networks.

Landscapes

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

Abstract

Des modes de réalisation de la présente divulgation concernent des procédés, des dispositifs et des supports lisibles par ordinateur pour des communications. Selon des modes de réalisation de la présente divulgation, un équipement terminal reçoit, en provenance d'un dispositif de réseau, une première configuration indiquant un motif de répétition de canal physique à accès aléatoire (PRACH). L'équipement terminal reçoit une seconde configuration. La seconde configuration indique : un ou plusieurs ensembles d'occasions de PRACH et un emplacement de fréquence du ou des ensembles d'occasions de PRACH. Chaque ensemble d'occasions de PRACH comprend une pluralité d'occasions de PRACH. La pluralité d'occasions de PRACH est continue dans le domaine temporel. L'équipement terminal effectue au moins une répétition de PRACH dans le ou les ensembles d'occasions de PRACH avec une continuité de phase sur la base du motif de répétition de PRACH. De cette manière, la continuité de phase est avantageuse pour un réseau pour combiner la puissance plus efficace à partir de multiples répétitions dans certains cas.
PCT/CN2021/126788 2021-10-27 2021-10-27 Procédé, dispositif et support lisible par ordinateur pour des communications WO2023070384A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/126788 WO2023070384A1 (fr) 2021-10-27 2021-10-27 Procédé, dispositif et support lisible par ordinateur pour des communications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/126788 WO2023070384A1 (fr) 2021-10-27 2021-10-27 Procédé, dispositif et support lisible par ordinateur pour des communications

Publications (1)

Publication Number Publication Date
WO2023070384A1 true WO2023070384A1 (fr) 2023-05-04

Family

ID=86160304

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/126788 WO2023070384A1 (fr) 2021-10-27 2021-10-27 Procédé, dispositif et support lisible par ordinateur pour des communications

Country Status (1)

Country Link
WO (1) WO2023070384A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170094689A1 (en) * 2015-09-28 2017-03-30 Telefonaktiebolaget Lm Ericsson (Publ) Random Access Preamble for Minimizing PA Backoff
US20190223228A1 (en) * 2018-01-12 2019-07-18 Lg Electronics Inc. Method for transmitting and receiving physical random access channel and apparatus therefor
US20190327766A1 (en) * 2018-04-23 2019-10-24 Qualcomm Inc Random access coverage extension in wireless communications
CN110445590A (zh) * 2018-05-04 2019-11-12 华为技术有限公司 通信方法和装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170094689A1 (en) * 2015-09-28 2017-03-30 Telefonaktiebolaget Lm Ericsson (Publ) Random Access Preamble for Minimizing PA Backoff
US20190223228A1 (en) * 2018-01-12 2019-07-18 Lg Electronics Inc. Method for transmitting and receiving physical random access channel and apparatus therefor
US20190327766A1 (en) * 2018-04-23 2019-10-24 Qualcomm Inc Random access coverage extension in wireless communications
CN110445590A (zh) * 2018-05-04 2019-11-12 华为技术有限公司 通信方法和装置

Similar Documents

Publication Publication Date Title
WO2024021136A1 (fr) Procédés, dispositifs terminaux et support lisible par ordinateur destinés aux communications
WO2023184273A1 (fr) Procédé, dispositif, et support de stockage informatique destinés à la communication
WO2023102846A1 (fr) Procédé, dispositif et support lisible par ordinateur destinés aux communications
WO2023070384A1 (fr) Procédé, dispositif et support lisible par ordinateur pour des communications
WO2023070397A1 (fr) Procédé, dispositif et support lisible par ordinateur pour des communications
WO2023050220A1 (fr) Procédé, dispositif et support lisible par ordinateur pour des communications
WO2023193262A1 (fr) Procédés, dispositifs et support lisible par ordinateur destinés à la communication
WO2024192688A1 (fr) Dispositif, procédé et support lisible par ordinateur pour communication
WO2024031260A1 (fr) Procédé, dispositif, et support de stockage informatique de communication
WO2023168603A1 (fr) Procédé, dispositif et support de stockage informatique de communication
WO2023137721A1 (fr) Procédés, dispositifs et support lisible par ordinateur pour la communication
WO2023082261A1 (fr) Procédés, dispositifs et support lisible par ordinateur pour des communications
WO2023178625A1 (fr) Procédés, dispositifs et supports lisibles par ordinateur destinés aux communications
WO2023070592A1 (fr) Procédé, dispositif et support lisible par ordinateur destinés aux communications
WO2023097657A1 (fr) Procédé, dispositif et support de stockage destinés à des communications
WO2024212117A1 (fr) Dispositif, procédé et support lisible par ordinateur pour des communications
WO2023141941A1 (fr) Procédés, dispositifs et support lisible par ordinateur pour des communications
WO2023168610A1 (fr) Procédé, dispositif et support lisible par ordinateur pour la gestion d'interférence de liaison croisée
WO2023178694A1 (fr) Procédé, dispositif et support lisible par ordinateur destinés aux communications
WO2024065771A1 (fr) Procédés, dispositifs et support de communication
WO2024148624A1 (fr) Procédés, dispositifs et support de communication
WO2023133829A1 (fr) Procédé, dispositif et support de stockage informatique de communication
WO2023122996A1 (fr) Procédé, dispositif et support lisible par ordinateur pour des communications
WO2024060246A1 (fr) Procédé, dispositif et support de stockage informatique de communication
WO2023123282A1 (fr) Procédé, dispositif et support lisible par ordinateur pour des communications

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21961753

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE