EP4627846A1 - Demande de ressources pour une communication sans fil - Google Patents

Demande de ressources pour une communication sans fil

Info

Publication number
EP4627846A1
EP4627846A1 EP22967356.1A EP22967356A EP4627846A1 EP 4627846 A1 EP4627846 A1 EP 4627846A1 EP 22967356 A EP22967356 A EP 22967356A EP 4627846 A1 EP4627846 A1 EP 4627846A1
Authority
EP
European Patent Office
Prior art keywords
signalling
transmission
information
timing advance
channel
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
EP22967356.1A
Other languages
German (de)
English (en)
Inventor
Robert Baldemair
Claes Tidestav
Erik Eriksson
Stefan Parkvall
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 EP4627846A1 publication Critical patent/EP4627846A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • 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

  • This disclosure pertains to wireless communication, in particular for high frequencies.
  • Shorter symbol times in particular may lead to new issues, e.g. in the context of random access and/or scheduling requests.
  • the approaches described may be utilised for one or more different frequencies ranges. For example, they may be implemented for frequency ranges (e.g., carrier bandwidth and/or system bandwidth) for communication signalling of 1 GHz or more, 2GHz or more, 5 GHz or more, or 6 GHz or more, or 10 GHz or more, and/or for millimetre wave communication, in particular for radio carrier frequencies around and/or above 52.6 GHz, which may be considered high radio frequencies (high frequency) and/or millimetre waves.
  • the carrier frequency/ies may be between 52.6 and 140 GHz, e.g.
  • the carrier frequency may in particular refer to a centre frequency or maximum frequency of the carrier.
  • the radio nodes and/or network described herein may operate in wide-band, e.g. with a carrier bandwidth (or bandwidth or carrier aggregation) of 400MHz or more, in particular 1 GHz or more, or 2 GHz or more, or even larger, e.g.
  • the scheduled or allocated bandwidth may be the carrier bandwidth, or be smaller, e.g. depending on channel and/or procedure.
  • operation may be based on an OFDM wave-form or a SC-FDM wave-form (e.g., downlink and/or uplink), in particular a FDF-SC-FDM-based waveform.
  • SC-FDE which may be pulse-shaped or Frequency Domain Filtered, e.g. based on modulation scheme and/or MGS
  • different wave-forms may be used for different communication directions.
  • Communicating using or utilising a carrier and/or beam may correspond to operating using or utilising the carrier and/or beam, and/or may comprise transmitting on the carrier and/or beam and/or receiving on the carrier and/or beam. Operation may be based on and/or associated to a numerology, which may indicate a subcarrier spacing and/or duration of an allocation unit and/or an equivalent thereof, e.g., in comparison to an OFDM based system.
  • a subcarrier spacing or equivalent frequency interval may for example correspond to 960 kHz, or 1920 kHz, e.g. representing the bandwidth of a subcarrier or equivalent.
  • the approaches are particularly advantageously implemented in a future 6th Generation (6G) telecommunication network or 6G radio access technology or network (RAT /RAN), in particular according to 3GPP (3rd Generation Partnership Project, a standardisation organization).
  • 6G 6th Generation
  • RAT /RAN 6G radio access technology
  • a suitable RAN may in particular be a RAN according to NR, for example release 18 or later, or LTE Evolution.
  • the approaches may also be used with other RAT, for example future 5.5G systems or IEEE based systems.
  • the method comprises transmitting messages requesting transmission resources based on a counter, wherein based on the counter, the messages are transmitted with a first timing advance or a second timing advance.
  • a requesting radio node for a wireless communication network is considered.
  • the requesting radio node is adapted for transmitting messages requesting transmission resources based on a counter, wherein based on the counter, the messages are transmitted with a first timing advance or a second timing advance.
  • the messages may be repetitions, or different messages (e.g., newly encoded for different transmissions).
  • a message requestion transmission resources in general may be a scheduling request (e.g., transmitted on a PUCCH), or a buffer status report (BSR, e.g. transmitted on a PUSCH) or a random access message, e.g. transmitted on a PRACH.
  • BSR buffer status report
  • a BSR may be newly encoded for each transmission.
  • a timing advance may be a shift in transmission timing (to an earlier time) relative to a transmission timing structure, e.g. relative to a DL transmission, and/or to aimed at aligning reception of signals at the receiver to the receiver’s timing.
  • the target of the message may be a network node and/or scheduling radio node or signalling radio node.
  • a message requesting transmission resources may in general indicate to the target that the transmitter has data to transmit, e.g. on PUSCH, and/or requires resources to transmit data.
  • a timing advance in particular the first timing advance, may pertain to an uplink communication link and/or uplink transmission beam, and/or beam pair used for transmitting the message.
  • a message requesting transmission resources may be transmitted until resources are granted, e.g.
  • transmission of the messages requesting transmission resources may for example be periodically, or ape- riodically, or with a first periodicity in a first time interval with the first timing advance, and with a different second periodicity in a second time interval.
  • An occurrence of a repetition may be transmitted on recurring resources, e.g. of the same channel; between occurrence of the repeated message, there may be gaps of one symbol time interval or more, or 4 or more symbol time intervals or more, or a slot or more.
  • a timing advance may become invalid or inaccurate over time, e.g. due to relative movement of devices or obstacles, or generally due to changes in the radio environment.
  • Approaches described herein may in particular accomodate shifts in timing that may occur in dynamic systems, e.g. due to movement of a wireless device and/or an obstacle, which may be particularly impactful when short timescale symbols are used.
  • the counter is based on the validity and/or time of validity of the first timing advance, which for example may be configured and/or configurable with higher layer signalling, or predefined and/or have a default value.
  • the counter may be such that the first timing advance is used during its time of validity; in some cases, the counter may be such that the first timing advance is used during the time of validity plus or minus a buffer time, e.g. to accomodate switching of timing or allowing time for determining and transmitting a response.
  • the first timing advance there is associated transmission of a random access message, in particular a msgA or msgl (which may thus be considered to represent the message requesting transmission resources).
  • the message may be a message with repetition sequences as described herein.
  • a random access message in particular a msgA or msgl.
  • a contention-based message e.g. a msgA or msgl with a randomised and/or non-dedicated random access preamble.
  • first timing advance there may be associated transmission on a first type of resources and/or a first type of physical channel
  • second timing advance there may be associated transmission on a second type of resources and/or a second type of physical channel.
  • Different types of resources may be associated to different channels and/or signalling formats and/or have different sizes, e.g. in terms of time domain extension, and/or frequency domain extension, and/or may have different code resources (e.g., OCC).
  • different types of resources may be different in periodicity of occurrence, and/or whether they a dynamically scheduled or semi-statically configured.
  • the first type of channel and/or resources may be different from the second type of resources and/or channel.
  • the first timing advance there may be associated transmission on a Physical Uplink Control CHannel, PUCCH (e.g., a schedling request), or transmission on Physical Uplink SHared CHannel, PUSCH (e.g., a scheduling request or BSR), or transmission on a Physical Random Access CHannel, PRACH (e.g., msgA or msgl).
  • PUCCH Physical Uplink Control CHannel
  • PUSCH e.g., a scheduling request or BSR
  • PRACH Physical Random Access CHannel
  • PRACH Physical Random Access CHannel
  • PRACH Physical Random Access CHannel
  • the first timing advance there is associated transmission of a scheduling request, e.g. on PUCCH, or on PUSCH, or a BSR, on PUSCH.
  • the second timing advance may be used, which may be less reliable than the first.
  • a method of operating a radio node in a wireless communication network may be considered.
  • the method may comprise communicating utilising a random access message, and/or transmitting message requesting transmission resources, having one or multiple symbol content (s).
  • the message or random access message may have a signalling structure in which for each symbol content, the symbol content may be repeated sequentially NO-times, wherein NO may be an integer of 2 or larger.
  • the radio node may in particular be a requesting radio node or a wireless device, if transmitting, or a network node, if receiving.
  • the method may comprise one or more features of a method as described herein, in particular re: transmission or reception of a message requesting transmission resources.
  • a radio node for a wireless communication network is proposed.
  • the radio node may be adapted for communicating utilising a random access message, and/or transmitting message requesting transmission resources, having one or multiple symbol content(s).
  • the message or random access message may have a signalling structure may have a signalling structure in which for each symbol content, the symbol content may be repeated sequentially NO-times, wherein NO may be an integer of 2 or larger.
  • the radio node may in particular be a requesting radio node or a wireless device, if transmitting, or a network node, if receiving.
  • the radio node may comprise one or more features of a radio node as described herein, in particular re: transmission or reception of a message requesting transmission resources.
  • NO may in particular be 2 or 3. In some cases, NO may be the same for a first timing advance and a second timing advance.
  • a symbol content being repeated NO times may refer to the symbol content being transmitted NO times. Sequential repetition may refer to each occurrence being neighbouring in time by at least one other occurrence, e.g., to form a chain or sequence of neighbouring occurrences of the symbol content; it may be considered that there is no other signalling interspersed into the NO repetitions.
  • a symbol content may pertain to the signalling carried as information and/or content in time interval, e.g. corresponding to a symbol time interval.
  • a cyclic prefix may correspond to part-repetition of the symbol content, e.g. representing the trailing end of a symbol content.
  • the symbol content may pertain to physical characteristics of the signalling, e.g. regarding frequency and/or modulation and/or waveform and/or signal form.
  • a cyclic prefix may precede each repetition sequence of the symbol content.
  • Different sequences may have different cyclic prefixes.
  • the cyclic prefix may be adapted, e.g. in terms of duration, to align a repetition sequence plus the cyclic prefix to a transmission timing structure, e.g. such that the beginning of the cyclic prefix and the end of the repetition sequence (the end of the the last symbol content repetition) may align with a symbol border, e.g. of an uplink transmission timing structure, e.g. an uplink frame structure.
  • This may lead to the same durations for NO symbols according to the timing structure and the NO repetitions plus cyclic prefix; whether actual alignment happens may depend on path delays, at least before a timing advance has been signalled to, or determined by, the radio node.
  • the radio node may be a wireless device or user equipment or terminal. Alternatively, it may be a network node or signalling radio node.
  • a radio node adapted for wireless communication may be a radio node adapted for transmitting and/or receiving communication signalling.
  • Communication signalling may be, and/or comprise, data signalling and/or control signalling and/or reference signalling, e.g. according to a wireless communication standard like a 3GPP standard or IEEE standard.
  • Operating utilising communication signalling may comprise transmitting and/or receiving communication signalling.
  • the radio circuitry and/or processing circuitry and/or antenna circuitry of a radio node may be adapted for handling communication signalling
  • the radio node may be adapted for full-duplex operation, and/or half-duplex operation. Full duplex may refer to transmitting and receiving at the same time, e.g. using the same or different circuitries, and/or using different antenna sub-arrays or separately operable antenna sub-arrays or antenna elements.
  • a program product comprising instructions causing processing circuitry to control and/or perform a method as described herein.
  • a carrier medium arrangement carrying and/or storing a program product as described herein is considered.
  • An information system comprising, and/or connected or connectable, to a radio node is also disclosed.
  • Random access may be performed by a wireless device to access a cell and/or to start communication and/or to synchronise to a network, in particular for uplink synchronisation, and/or for handover or other purposes.
  • a wireless device may be considered to be adapted to perform random access, e.g. to perform one or more actions like transmissions and/or reception associated to a random access procedure on the device side;
  • a network node may be considered to be adapted to perform random access, e.g. to perform one or more actions like transmissions and/or reception associated to a random access procedure on the network side.
  • a wireless device may receive synchronisation signaling transmitted from the network (e.g., a signaling radio node), e.g. a transmitted SS/PBCH beam SSBO, SSB1,. . . . Reception of the SS/PBCH beam SSBO, . . . may be with a reception beam, which may for example be associated to a random access transmission beam PRACH beam 0, 1, . . . for the wireless device, and/or to the SS/PBCH transmission beam (associated in this context may indicate the inverse/reverse beam, and/or a beam in a specific reception direction).
  • a reception beam may be associated to a SS/PBCH transmission beam, or to a group of such, e.g.
  • the wireless device may determine the best received SS/PBCH transmission, e.g. based on reception within a FFT window to sample the signaling, and transmit a random access preamble in response to indicate it wants to perform random access.
  • a random access preamble may also be referred to as message 1 or msgl; it may be represented by a sequence of symbols to be transmitted, e.g.
  • the msgl or preamble may be transmitted in a random access resource (also referred to as random access occasion), which may be indicated by and/or dependent on the SS/PBCH received, and/or be associated to the specific set of preambles the preamble is selected from.
  • a random access resource also referred to as random access occasion
  • the RA preamble is transmitted using a subcarrier spacing or numerology different from the one used for communication; the SCS for RA may be for example be 960 kHz, wherein the communication SCS may be 1920 kHz.
  • the transmission of the RA preamble may comprise a number of repetitions of the preamble and/or a cyclic prefix.
  • a preamble sequence arrives at the network node, may depend on the distance between the wireless device and the receiving network node.
  • the RA preamble transmission may be received with SSB reception beams, to e.g. determine the best reception.
  • the received SSB may in general be used for cell identification and synchronisation by the wireless device.
  • the wireless device may generally acquire a timing advance (TA) value for UL transmissions, which may be provided by the network node.
  • the maximum delay of RA preamble reception may be indicative of a cell size or communication radius, which may be related to a maximum allowed TA.
  • a network node may transmit a random access response (RAR) or message 2 (msg2), which may provide a timing advance value (TAI) and schedule resources for uplink transmission, e.g. on a PUSCH, using a message 3 (msg3).
  • RAR random access response
  • msg2 message 2
  • TAI timing advance value
  • the msg3 may be transmitted using the provided timing advance value (TAI) and/or according to the communication SCS, which may in general shift the transmission to an earlier point in time in relation to the downlink timing to accommodate the signal traveling time for UL transmission (e.g., so that the network may receive synchronised signaling).
  • Msg3 may be a contention resolution request, e.g. containing details of the identity of the wireless device to enable to network to unambiguously identify wireless devices to finish random access.
  • a msg4 transmitted by the network node may resolve the contention and/or provide setup for communication, e.g. to perform an RRC setup procedure.
  • multiple wireless device may try to access the network at the same time, e.g.
  • a wireless device may retransmit the RA preamble with increased power, e.g. using power ramping, until it receives a response and/or a maximum transmission power has been reached.
  • random access messages transmitted by a network node or signaling radio node e.g., msg2, msg4
  • a data channel e.g. PDSCH or PSSCH; such transmission may be scheduled with a control channel message and/or on a PDCCH or PSCCH, e.g.
  • the control channel message may be associated to a search space or CORESET, which may be configured or configurable with higher layer signaling, e.g. with PBCH signaling and/or RRC layer signaling, e.g. in a SS/PBCH transmission and/or a data channel transmission, e.g. on PDSCH (e.g., for specific configuration or as System Information multicast or broadcast, e.g. associated to PBCH signaling).
  • a single message may be transmitted, e.g. a message A or msgA.
  • msgA may comprise a preamble part and/or a part with coded data, similar to a PUSCH transmission.
  • a msgB in response to a msgA, there may be transmitted a msgB, e.g. instead of a msg2 and msg4.
  • msgB may be similar to a PDSCH transmission. This may be part of a 2-step RA procedure. For some uses cases, e.g. synchronisation, it may be sufficient to exchange msgl and msg2 in a shortened 4-step procedure.
  • received signalling may be subjected to a FFT operation, in an FFT window covering a symbol time interval (without cyclic prefix).
  • FFT window covering a symbol time interval (without cyclic prefix).
  • this may lead to a timing issue.
  • upper row for short distances, the window and the symbol time interval (the symbol proper) align.
  • the cyclic prefix allows correct processing.
  • it might be considered to extend the CP (see Figure 1, middle row).
  • FIG 1, middle row there is an increasing likelihood that FFT windows cover two different symbols, or different CPs, leading to misreception of symbols. It is proposed providing a msgA structure in which each symbol is doubled.
  • a CP may be added before the first symbol of a double, with double length of the normal CP. This is shown in the lower row of Figure 1. As can be seen, at least every second FFT now can cover a clean copy of a symbol proper. It may be considered that the first symbol proper (without the leading CP) may serve as a CP for the second symbol.
  • Figure 2 shows a scenario in which msgA is received without (small) timing misalignment, with both FFT windows capturing a clean symbol. Combining outputs from both FFT windows may be performed to improve performance. Combining can be soft-combining in soft-bit domain, coherent addition of pre- and/or post-FFT samples, selection combining (make two independent decoding and picking one with correct CRC check) .
  • TQFDM may refer to a symbol time interval duration of an OFDM symbol (or for a DFT-s-OFDM symbol) according to the numerology used.
  • a msgA may be used for one or more of following purposes: Random access or initial access, e.g., after cell-search; scheduling request (SR), e.g. to request resources for transmission, e.g. on PUSCH, for example if a UE has no scheduling request resources, it can use msgA as scheduling request; beam failure recovery (BFR), e.g. after beam failure to inform network.
  • SR scheduling request
  • BFR beam failure recovery
  • the wireless device may have a valid TA value (this may be at least for SR, for BFR it may at least be approximately valid, at least for synched TRPs). In these cases, the wireless device may use the latest TA value it has received. msgA transmission then may arrive time aligned at TRP. Both FFT windows can be used and combined for improved performance.
  • a timer may be utilised. For example, the UE may repeat SR until it gets a scheduling grant (until an SR timer expires), but after some time the “valid TA” may not be valid any longer.
  • the timing advance value may be provided in a msgB.
  • a format/MAC CE may be used, e.g. enabling large TA changes. This may be information provided in a MAC PDU (MAC protocol data unit), and/or provided via a transport channel, and/or explicitly indicating the TA value, e.g. as an absolute value and/or value range.
  • MAC PDU MAC protocol data unit
  • a Format/MAC CE may be used as subsequent TA command, which allows tracking of timing changes.
  • a change in TA may be indicated, limiting signalling overhead.
  • Radio node 10 comprises processing circuitry (which may also be referred to as control circuitry) 20, which may comprise a controller connected to a memory. Any module of the radio node 10, e.g. a communicating module or determining module, may be implemented in and/or executable by, the processing circuitry 20, in particular as module in the controller. Radio node 10 also comprises radio circuitry 22 providing receiving and transmitting or transceiving functionality (e.g., one or more transmitters and/or receivers and/or transceivers), the radio circuitry 22 being connected or connectable to the processing circuitry.
  • processing circuitry which may also be referred to as control circuitry
  • Any module of the radio node 10 e.g. a communicating module or determining module, may be implemented in and/or executable by, the processing circuitry 20, in particular as module in the controller.
  • Radio node 10 also comprises radio circuitry 22 providing receiving and transmitting or transceiving functionality (e.g., one or more transmitters and/or receivers and/or transceivers), the radio
  • Radio node 100 which may in particular be implemented as a network node 100, for example an eNB or gNB or similar for NR.
  • Radio node 100 comprises processing circuitry (which may also be referred to as control circuitry) 120, which may comprise a controller connected to a memory. Any module, e.g. transmitting module and/or receiving module and/or configuring module of the node 100 may be implemented in and/or executable by the processing circuitry 120.
  • the processing circuitry 120 is connected to control radio circuitry 122 of the node 100, which provides receiver and transmitter and/or transceiver functionality (e.g., comprising one or more transmitters and/or receivers and/or transceivers).
  • An antenna circuitry 124 may be connected or connectable to radio circuitry 122 for signal reception or transmittance and/or amplification.
  • Node 100 may be adapted to carry out any of the methods for operating a radio node or network node disclosed herein; in particular, it may comprise corresponding circuitry, e.g. processing circuitry, and/or modules.
  • the antenna circuitry 124 may be connected to and/or comprise an antenna array.
  • the node 100 respectively its circuitry, may be adapted to perform any of the methods of operating a network node or a radio node as described herein; in particular, it may comprise corresponding circuitry, e.g. processing circuitry, and/or modules.
  • the radio node 100 may generally comprise communication circuitry, e.g.
  • a range may indicate an interval of the delay spread distribution over time/delay, which may cover a predetermined percentage of the delay spread respective received energy or power, e.g. 50% or more, 75% or more, 90% or more, or 100%.
  • a relative delay spread may indicate a relation to a threshold delay, e.g. of the mean delay, and/or a shift relative to an expected and/or configured timing, e.g. a timing at which the signalling would have been expected based on the scheduling, and/or a relation to a cyclic prefix duration (which may be considered on form of a threshold).
  • Energy distribution or power distribution may pertain to the energy or power received over the time interval of the delay spread.
  • Communicating utilizing a first beam pair and/or first beam may be based on, and/or comprise, switching from the second beam pair or second beam to the first beam pair or first beam for communicating.
  • the switching may be controlled by the network, for example a network node (which may be the source or transmitter of the received beam of the first beam pair and/or second beam pair, or be associated thereto, for example associated transmission points or nodes in dual connectivity).
  • Such controlling may comprise transmitting control signalling, e.g. physical layer signalling and/or higher layer signalling.
  • reference signalling may be and/or comprise CSI-RS and/or PT-RS and/or DMRS, e.g. transmitted by the network node.
  • the reference signalling may be transmitted by a UE, e.g. to a network node or other UE, in which case it may comprise and/or be Sounding Reference signalling.
  • Other, e.g. new, forms of reference signalling may be considered and/or used.
  • a modulation symbol of reference signalling respectively a resource element carrying it may be associated to a cyclic prefix.
  • Data signalling may be on a data channel, for example on a PDSCH or PSSCH, or on a dedicated data channel, e.g. for low latency and/or high reliability, e.g. a URLLC channel.
  • Control signalling may be on a control channel, for example on a common control channel or a PDCCH or PSCCH, and/or comprise one or more DCI messages or SCI messages.
  • Reference signalling may be associated to control signalling and/or data signalling, e.g. DM-RS and/or PT-RS.
  • a transmission quality parameter may in general correspond to the number R of retransmissions and/or number T of total transmissions, and/or coding (e.g., number of coding bits, e.g. for error detection coding and/or error correction coding like FEC coding) and/or code rate and/or BLER and/or BER requirements and/or transmission power level (e.g., minimum level and/or target level and/or base power level PO and/or transmission power control command, TPC, step size) and/or signal quality, e.g. SNR and/or SIR and/or SINR and/or power density and/or energy density.
  • coding e.g., number of coding bits, e.g. for error detection coding and/or error correction coding like FEC coding
  • code rate and/or BLER and/or BER requirements e.g., minimum level and/or target level and/or base power level PO and/or transmission power control command, TPC, step size
  • signal quality e.g. S
  • a buffer state report may comprise information representing the presence and/or size of data to be transmitted (e.g., available in one or more buffers, for example provided by higher layers).
  • the size may be indicated explicitly, and/or indexed to range/s of sizes, and/or may pertain to one or more different channel/s and/or acknowledgement processes and/or higher layers and/or channel groups/s, e.g, one or more logical channel/s and/or transport channel/s and/or groups thereof:
  • the structure of a BSR may be predefined and/or configurable of configured, e.g. to override and/or amend a predefined structure, for example with higher layer signalling, e.g. RRC signalling.
  • a carrier medium in particular a guiding/transporting medium, may comprise the electromagnetic field, e.g. radio waves or microwaves, and/or optically transmissive material, e.g. glass fiber, and/or cable.
  • a storage medium may comprise at least one of a memory, which may be volatile or nonvolatile, a buffer, a cache, an optical disc, magnetic memory, flash memory, etc.
  • a system comprising one or more radio nodes as described herein, in particular a network node and a user equipment, is described.
  • the system may be a wireless communication system, and/or provide and/or represent a radio access network.
  • Providing information may comprise providing information for, and/or to, a target system, which may comprise and/or be implemented as radio access network and/or a radio node, in particular a network node or user equipment or terminal.
  • Providing information may comprise transferring and/or streaming and/or sending and/or passing on the information, and/or offering the information for such and/or for download, and/or triggering such providing, e.g. by triggering a different system or node to stream and/or transfer and/or send and/or pass on the information.
  • the information system may comprise, and/or be connected or connectable to, a target, for example via one or more intermediate systems, e.g. a core network and/or internet and/or private or local network. Information may be provided utilising and/or via such intermediate system/s. Providing information may be for radio transmission and/or for transmission via an air interface and/or utilising a RAN or radio node as described herein. Connecting the information system to a target, and/or providing information, may be based on a target indication, and/or adaptive to a target indication.
  • a target indication may indicate the target, and/or one or more parameters of transmission pertaining to the target and/or the paths or connections over which the information is provided to the target.
  • Such parameter/s may in particular pertain to the air interface and/or radio access network and/or radio node and/or network node.
  • Example parameters may indicate for example type and/or nature of the target, and/or transmission capacity (e.g., data rate) and/or latency and/or reliability and/or cost, respectively one or more estimates thereof.
  • the target indication may be provided by the target, or determined by the information system, e.g. based on information received from the target and/or historical information, and/or be provided by a user, for example a user operating the target or a device in communication with the target, e.g. via the RAN and/or air interface.
  • a user may indicate on a user equipment communicating with the information system that information is to be provided via a RAN, e.g. by selecting from a selection provided by the information system, for example on a user application or user interface, which may be a web interface.
  • An information system may comprise one or more information nodes.
  • An information node may generally comprise processing circuitry and/or communication circuitry.
  • an information system and/or an information node may be implemented as a computer and/or a computer arrangement, e.g. a host computer or host computer arrangement and/or server or server arrangement.
  • an interaction server e.g., web server of the information system may provide a user interface, and based on user input may trigger transmitting and/or streaming information provision to the user (and/or the target) from another server, which may be connected or connectable to the interaction server and/or be part of the information system or be connected or connectable thereto.
  • the information may be any kind of data, in particular data intended for a user of for use at a terminal, e.g. video data and/or audio data and/or location data and/or interactive data and/or game-related data and/or environmental data and/or technical data and/or traffic data and/or vehicular data and/or circumstantial data and/or operational data.
  • the information provided by the information system may be mapped to, and/or mappable to, and/or be intended for mapping to, communication or data signalling and/or one or more data channels as described herein (which may be signalling or channel/s of an air interface and/or used within a RAN and/or for radio transmission). It may be considered that the information is formatted based on the target indication and/or target, e.g. regarding data amount and/or data rate and/or data structure and/or timing, which in particular may be pertaining to a mapping to communication or data signalling and/or a data channel. Mapping information to data signalling and/or data channel/s may be considered to refer to using the signalling/ channel/s to carry the data, e.g.
  • a target indication generally may comprise different components, which may have different sources, and/or which may indicate different characteristics of the target and/or communication path/s thereto.
  • a format of information may be specifically selected, e.g. from a set of different formats, for information to be transmitted on an air interface and/or by a RAN as described herein. This may be particularly pertinent since an air interface may be limited in terms of capacity and/or of predictability, and/or potentially be cost sensitive.
  • the format may be selected to be adapted to the transmission indication, which may in particular indicate that a RAN or radio node as described herein is in the path (which may be the indicated and/or planned and/or expected path) of information between the target and the information system.
  • a (communication) path of information may represent the interface/s (e.g., air and/or cable interfaces) and/or the intermediate system/s (if any), between the information system and/or the node providing or transferring the information, and the target, over which the information is, or is to be, passed on.
  • a path may be (at least partly) undetermined when a target indication is provided, and/or the information is provided/transferred by the information system, e.g. if an internet is involved, which may comprise multiple, dynamically chosen paths.
  • Information and/or a format used for information may be packet-based, and/or be mapped, and/or be mappable and/or be intended for mapping, to packets.
  • a target device comprising providing a target indicating to an information system.
  • a target device may be considered, the target device being adapted for providing a target indication to an information system.
  • a target indication tool adapted for, and/or comprising an indication module for, providing a target indication to an information system.
  • the target device may generally be a target as described above.
  • a target indication tool may comprise, and/or be implemented as, software and/or application or app, and/or web interface or user interface, and/or may comprise one or more modules for implementing actions performed and/or controlled by the tool.
  • the tool and/or target device may be adapted for, and/or the method may comprise, receiving a user input, based on which a target indicating may be determined and/or provided.
  • the tool and/or target device may be adapted for, and/or the method may comprise, receiving information and/or communication signalling carrying information, and/or operating on, and/or presenting (e.g., on a screen and/or as audio or as other form of indication), information.
  • the information may be based on received information and/or communication signalling carrying information.
  • Presenting information may comprise processing received information, e.g. decoding and/or transforming, in particular between different formats, and/or for hardware used for presenting.
  • Operating on information may be independent of or without presenting, and/or proceed or succeed presenting, and/or may be without user interaction or even user reception, for example for automatic processes, or target devices without (e.g., regular) user interaction like MTC devices, of for automotive or transport or industrial use.
  • the information or communication signalling may be expected and/or received based on the target indication.
  • Presenting and/or operating on information may generally comprise one or more processing steps, in particular decoding and/or executing and/or interpreting and/or transforming information.
  • Operating on information may generally comprise relaying and/or transmitting the information, e.g. on an air interface, which may include mapping the information onto signalling (such mapping may generally pertain to one or more layers, e.g. one or more layers of an air interface, e.g.
  • the information may be imprinted (or mapped) on communication signalling based on the target indication, which may make it particularly suitable for use in a RAN (e.g., for a target device like a network node or in particular a UE or terminal).
  • the tool may generally be adapted for use on a target device, like a UE or terminal.
  • the tool may provide multiple functionalities, e.g. for providing and/or selecting the target indication, and/or presenting, e.g. video and/or audio, and/or operating on and/or storing received information.
  • Providing a target indication may comprise transmitting or transferring the indication as signalling, and/or carried on signalling, in a RAN, for example if the target device is a UE, or the tool for a UE. It should be noted that such provided information may be transferred to the information system via one or more additionally communication interfaces and/or paths and/or connections.
  • the target indication may be a higher-layer indication and/or the information provided by the information system may be higher-layer information, e.g. application layer or user-layer, in particular above radio layers like transport layer and physical layer.
  • the target indication may be mapped on physical layer radio signalling, e.g. related to or on the user-plane, and/or the information may be mapped on physical layer radio communication signalling, e.g.
  • a user input may for example represent a selection from a plurality of possible transmission modes or formats, and/or paths, e.g. in terms of data rate and/or packaging and/or size of information to be provided by the information system.
  • a numerology and/or subcarrier spacing may indicate the bandwidth (in frequency domain) of a subcarrier of a carrier, and/or the number of subcarriers in a carrier and/or the numbering of the subcarriers in a carrier, and/or the symbol time length.
  • Different numerologies may in particular be different in the bandwidth of a subcarrier.
  • all the subcarriers in a carrier have the same bandwidth associated to them.
  • the numerology and/or subcarrier spacing may be different between carriers in particular regarding the subcarrier bandwidth.
  • a symbol time length, and/or a time length of a timing structure pertaining to a carrier may be dependent on the carrier frequency, and/or the subcarrier spacing and/or the numerology.
  • signalling may generally comprise one or more (e.g., modulation) symbols and/or signals and/or messages.
  • a signal may comprise or represent one or more bits.
  • An indication may represent signalling, and/or be implemented as a signal, or as a plurality of signals.
  • One or more signals may be included in and/or represented by a message, signalling, in particular control signalling, may comprise a plurality of signals and/or messages, which may be transmitted on different carriers and/or be associated to different signalling processes, e.g. representing and/or pertaining to one or more such processes and/or corresponding information.
  • An indication may comprise signalling, and/or a plurality of signals and/or messages and/or may be comprised therein, which may be transmitted on different carriers and/or be associated to different acknowledgement signalling processes, e.g. representing and/or pertaining to one or more such processes, signalling associated to a channel may be transmitted such that represents signalling and/or information for that channel, and/or that the signalling is interpreted by the transmitter and/or receiver to belong to that channel.
  • Such signalling may generally comply with transmission parameters and/or format/s for the channel.
  • An antenna arrangement may comprise one or more antenna elements (radiating elements), which may be combined in antenna arrays.
  • An antenna array or sub-array may comprise one antenna element, or a plurality of antenna elements, which may be arranged e.g. two dimensionally (for example, a panel) or three dimensionally. It may be considered that each antenna array or sub-array or element is separately controllable, respectively that different antenna arrays are controllable separately from each other.
  • a single antenna element /radiator may be considered the smallest example of a sub-array. Examples of antenna arrays comprise one or more multi-antenna panels or one or more individually controllable antenna elements.
  • An antenna arrangement may comprise a plurality of antenna arrays.
  • an antenna arrangement is associated to a (specific and/or single) radio node, e.g. a configuring or informing or scheduling radio node, e.g. to be controlled or controllable by the radio node.
  • An antenna arrangement associated to a UE or terminal may be smaller (e.g., in size and/or number of antenna elements or arrays) than the antenna arrangement associated to a network node.
  • Antenna elements of an antenna arrangement may be configurable for different arrays, e.g. to change the beamforming characteristics.
  • antenna arrays may be formed by combining one or more independently or separately controllable antenna elements or sub-arrays.
  • the beams may be provided by analog beamforming, or in some variants by digital beamforming, or by hybrid beamforming combing analog and digital beamforming.
  • the informing radio nodes may be configured with the manner of beam transmission, e.g. by transmitting a corresponding indicator or indication, for example as beam identify indication. However, there may be considered cases in which the informing radio node/s are not configured with such information, and/or operate transparently, not knowing the way of beamforming used.
  • An antenna arrangement may be considered separately controllable in regard to the phase and/or amplitude/power and/or gain of a signal feed to it for transmission, and/or separately controllable antenna arrangements may comprise an independent or separate transmit and/or receive unit and/or ADC (analog- Digit al- Converter, alternatively an ADC chain) or DCA (Digital-to-analog Converter, alternatively a DCA chain) to convert digital control information into an analog antenna feed for the whole antenna arrangement (the ADC/DCA may be considered part of, and/or connected or connectable to, antenna circuitry) or vice versa.
  • ADC analog- Digit al- Converter
  • DCA Digital-to-analog Converter
  • a scenario in which an ADC or DCA is controlled directly for beamforming may be considered an analog beamforming scenario; such controlling may be performed after encoding/decoding and7or after modulation symbols have been mapped to resource elements. This may be on the level of antenna arrangements using the same ADC/DCA, e.g. one antenna element or a group of antenna elements associated to the same ADC/DCA.
  • Digital beamforming may correspond to a scenario in which processing for beamforming is provided before feeding signalling to the ADC/DCA, e.g. by using one or more precoder/s and/or by precoding information, for example before and/or when mapping modulation symbols to resource elements.
  • Such a precoder for beamforming may provide weights, e.g.
  • DFT beamforming may be considered a form of digital beamforming, wherein a DFT procedure is used to form one or more beams. Hybrid forms of beamforming may be considered.
  • a beam may be defined by a spatial and/or angular and/or spatial angular distribution of radiation and/or a spatial angle (also referred to as solid angle) or spatial (solid) angle distribution into which radiation is transmitted (for transmission beamforming) or from which it is received (for reception beamforming).
  • Reception beamforming may comprise only accepting signals coming in from a reception beam (e.g., using analog beamforming to not receive outside reception beam/s), and/or sorting out signals that do not come in in a reception beam, e.g. in digital postprocessing, e.g. digital beamforming.
  • a beam may have a solid angle equal to or smaller than 4*pi sr (4*pi correspond to a beam covering all directions), in particular smaller than 2* pi, or pi, or pi/2, or pi/4 or pi/8 or pi/16. In particular for high frequencies, smaller beams may be used. Different beams may have different directions and/or sizes (e.g., solid angle and/or reach).
  • a beam may have a main direction, which may be defined by a main lobe (e.g., center of the main lobe, e.g. pertaining to signal strength and/or solid angle, which may be averaged and/or weighted to determine the direction), and may have one or more sidelobes.
  • a lobe may generally be defined to have a continuous or contiguous distribution of energy and/or power transmitted and/or received, e.g. bounded by one or more contiguous or contiguous regions of zero energy (or practically zero energy).
  • a main lobe may comprise the lobe with the largest signal strength and/or energy and/or power content.
  • sidelobes usually appear due to limitations of beamforming, some of which may carry signals with significant strength, and may cause multi-path effects.
  • a sidelobe may generally have a different direction than a main lobe and/or other side lobes, however, due to reflections a sidelobe still may contribute to transmitted and/or received energy or power.
  • a beam may be swept and/or switched over time, e.g., such that its (main) direction is changed, but its shape (angular/solid angle distribution) around the main direction is not changed, e.g. from the transmitter’s views for a transmission beam, or the receiver’s view for a reception beam, respectively.
  • Sweeping may correspond to continuous or near continuous change of main direction (e.g., such that after each change, the main lobe from before the change covers at least partly the main lobe after the change, e.g. at least to 50 or 75 or 90 percent).
  • Switching may correspond to switching direction non-continuously, e.g. such that after each change, the main lobe from before the change does not cover the main lobe after the change, e.g. at most to 50 or 25 or 10 percent.
  • Uplink or sidelink signalling may be OFDMA (Orthogonal Frequency Division Multiple Access) or SC-FDMA (Single Carrier Frequency Division Multiple Access) signalling.
  • Downlink signalling may in particular be OFDMA signalling.
  • signalling like communication signalling is not limited thereto (Filter-Bank based signalling and/or Single-Carrier based signalling, e.g. SC-FDE signalling, may be considered alternatives).
  • a subpattern may generally comprise one or more bits indicating ACK/NACK for a data block, and/or one or more bits for indicating ACK/NACK for a subblock or subblock group, or for more than one subblock or subblock group.
  • a subblock and/or subblock group may comprise information bits (representing the data to be transmitted, e.g. user data and/or downlink/sidelink data or uplink data). It may be considered that a data block and/or subblock and/or subblock group also comprises error one or more error detection bits, which may pertain to, and/or be determined based on, the information bits (for a subblock group, the error detection bit/s may be determined based on the information bits and/or error detection bits and/or error correction bits of the subblock/s of the subblock group).
  • a data block or substructure like subblock or subblock group may comprise error correction bits, which may in particular be determined based on the information bits and error detection bits of the block or substructure, e.g.
  • the error correction coding of a data block structure may cover and/or pertain to information bits and error detection bits of the structure.
  • a subblock group may represent a combination of one or more code blocks, respectively the corresponding bits.
  • a data block may represent a code block or code block group, or a combination of more than one code block groups.
  • a transport block may be split up in code blocks and/or code block groups, for example based on the bit size of the information bits of a higher layer data structure provided for error coding and/or size requirements or preferences for error coding, in particular error correction coding.
  • Such a higher layer data structure is sometimes also referred to as transport block, which in this context represents information bits without the error coding bits described herein, although higher layer error handling information may be included, e.g. for an internet protocol like TCP.
  • error handling information represents information bits in the context of this disclosure, as the acknowledgement signalling procedures described treat it accordingly.
  • a subblock like a code block may comprise error correction bits, which may be determined based on the information bit/s and/or error detection bit/s of the subblock.
  • An error correction coding scheme may be used for determining the error correction bits, e.g. based on LDPC or polar coding or Reed-Mueller coding.
  • a subblock or code block may be considered to be defined as a block or pattern of bits comprising information bits, error detection bit/s determined based on the information bits, and error correction bit/s determined based on the information bits and/or error detection bit/s. It may be considered that in a subblock, e.g.
  • a code block group may comprise one or more code blocks. In some variants, no additional error detection bits and/or error correction bits are applied, however, it may be considered to apply either or both.
  • a transport block may comprise one or more code block groups. It may be considered that no additional error detection bits and/or error correction bits are applied to a transport block, however, it may be considered to apply either or both. In some specific variants, the code block group/s comprise no additional layers of error detection or correction coding, and the transport block may comprise only additional error detection coding bits, but no additional error correction coding.
  • a subpattern of acknowledgement signalling may pertain to a code block, e.g. indicating whether the code block has been correctly received. It may be considered that a subpattern pertains to a subgroup like a code block group or a data block like a transport block. In such cases, it may indicate ACK, if all subblocks or code blocks of the group or data/transport block are received correctly (e.g. based on a logical AND operation), and NACK or another state of noncorrect reception if at least one subblock or code block has not been correctly received. It should be noted that a code block may be considered to be correctly received not only if it actually has been correctly received, but also if it can be correctly reconstructed based on soft-combining and/or the error correction coding.
  • a subpattern may comprise one or more bits, the number of which may be considered to represent its size or bit size.
  • Different bit n-tupels (n being 1 or larger) of a subpattern may be associated to different elements of a data block structure (e.g., data block or subblock or subblock group), and/or represent different resolutions. There may be considered variants in which only one resolution is represented by a bit pattern, e.g. a data block.
  • a bit n-tupel may represent acknowledgement information (also referred to a feedback), in particular ACK or NACK, and optionally, (if n ⁇ ,l), may represent DTX/DRX or other reception states.
  • ACK/NACK may be represented by one bit, or by more than one bit, e.g. to improve disambiguity of bit sequences representing ACK or NACK, and/or to improve transmission reliability.
  • the acknowledgement information or feedback information may pertain to a plurality of different transmissions, which may be associated to and/or represented by data block structures, respectively the associated data blocks or data signalling.
  • the data block structures, and/or the corresponding blocks and/or signalling may be scheduled for simultaneous transmission, e.g. for the same transmission timing structure, in particular within the same slot or subframe, and/or on the same symbol/s.
  • the acknowledgment information may pertain to data blocks scheduled for different transmission timing structures, e.g. different slots (or mini-slots, or slots and mini-slots) or similar, which may correspondingly be received (or not or wrongly received).
  • Scheduling signalling may generally comprise indicating resources, e.g. time and/or frequency resources, for example for receiving or transmitting the scheduled signalling.
  • signalling may generally be considered to represent an electromagnetic wave structure (e.g., over a time interval and frequency interval), which is intended to convey information to at least one specific or generic (e.g., anyone who might pick up the signalling) target.
  • a process of signalling may comprise transmitting the signalling.
  • Transmitting signalling, in particular control signalling or communication signalling, e.g. comprising or representing acknowledgement signalling and/or resource requesting information may comprise encoding and/or modulating.
  • Encoding and/or modulating may comprise error detection coding and/or forward error correction encoding and/or scrambling.
  • Receiving control signalling may comprise corresponding decoding and/or demodulation.
  • Error detection coding may comprise, and/or be based on, parity or checksum approaches, e.g. CRC (Cyclic Redundancy Check).
  • Forward error correction coding may comprise and/or be based on for example turbo coding and/or Reed-Muller coding, and/or polar coding and/or LDPC coding (Low Density Parity Check).
  • the type of coding used may be based on the channel (e.g., physical channel) the coded signal is associated to.
  • a code rate may represent the ratio of the number of information bits before encoding to the number of encoded bits after encoding, considering that encoding adds coding bits for error detection coding and forward error correction.
  • Coded bits may refer to information bits (also called systematic bits) plus coding bits.
  • Communication signalling may comprise, and/or represent, and/or be implemented as, data signalling, and/or user plane signalling.
  • Communication signalling may be associated to a data channel, e.g. a physical downlink channel or physical uplink channel or physical sidelink channel, in particular a PDSCH (Physical Downlink Shared Channel) or PSSCH (Physical Sidelink Shared Channel).
  • a data channel may be a shared channel or a dedicated channel.
  • Data signalling may be signalling associated to and/or on a data channel.
  • Implicit indication may for example be based on position and/or resource used for transmission.
  • Explicit indication may for example be based on a parametrisation with one or more parameters, and/or one or more index or indices, and/or one or more bit patterns representing the information. It may in particular be considered that control signalling as described herein, based on the utilised resource sequence, implicitly indicates the control signalling type.
  • a resource element may generally describe the smallest individually usable and/or encodable and/or decodable and/or modulatable and/or demodulatable time-frequency resource, and/or may describe a time-frequency resource covering a symbol time length in time and a subcarrier in frequency.
  • a signal may be allocatable and/or allocated to a resource element.
  • a subcarrier may be a subband of a carrier, e.g. as defined by a standard.
  • a carrier may define a frequency and/or frequency band for transmission and/or reception.
  • a signal (jointly encoded/modulated) may cover more than one resource elements.
  • a resource element may generally be as defined by a corresponding standard, e.g. NR or LTE. As symbol time length and/or subcarrier spacing (and/or numerology) may be different between different symbols and/or subcarriers, different resource elements may have different extension (length/width) in time and/or frequency domain, in particular resource elements pertaining
  • a border symbol may generally represent a starting symbol or an ending symbol for transmitting and/or receiving.
  • a starting symbol may in particular be a starting symbol of uplink or sidelink signalling, for example control signalling or data signalling.
  • Such signalling may be on a data channel or control channel, e.g. a physical channel, in particular a physical uplink shared channel (like PUSCH) or a sidelink data or shared channel, or a physical uplink control channel (like PUCCH) or a sidelink control channel.
  • the starting symbol is associated to control signalling (e.g., on a control channel)
  • the control signalling may be in response to received signalling (in sidelink or downlink), e.g. representing acknowledgement signalling associated thereto, which may be HARQ or ARQ signalling.
  • An ending symbol may represent an ending symbol (in time) of downlink or sidelink transmission or signalling, which may be intended or scheduled for the radio node or user equipment.
  • Such downlink signalling may in particular be data signalling, e.g. on a physical downlink channel like a shared channel, e.g. a PDSCH (Physical Downlink Shared Channel).
  • a starting symbol may be determined based on, and/or in relation to, such an ending symbol.
  • Configuring a radio node may refer to the radio node being adapted or caused or set and/or instructed to operate according to the configuration. Configuring may be done by another device, e.g., a network node (for example, a radio node of the network like a base station or eNodeB) or network, in which case it may comprise transmitting configuration data to the radio node to be configured.
  • a network node for example, a radio node of the network like a base station or eNodeB
  • Such configuration data may represent the configuration to be configured and/or comprise one or more instruction pertaining to a configuration, e.g. a configuration for transmitting and/or receiving on allocated resources, in particular frequency resources.
  • a radio node may configure itself, e.g., based on configuration data received from a network or network node.
  • a network node may utilise, and/or be adapted to utilise, its circuitry/ies for configuring.
  • Allocation information may be considered a form of configuration data.
  • Configuration data may comprise and/or be represented by configuration information, and/or one or more corresponding indications and/or message/s
  • determining a configuration and transmitting the configuration data to the radio node may be performed by different network nodes or entities, which may be able to communicate via a suitable interface, e.g., an X2 interface in the case of LTE or a corresponding interface for NR.
  • Configuring a terminal may comprise scheduling downlink and/or uplink transmissions for the terminal, e.g. downlink data and/or downlink control signalling and/or DCI and/or uplink control or data or communication signalling, in particular acknowledgement signalling, and/or configuring resources and/or a resource pool therefor.
  • a resource structure may be considered to be neighboured in frequency domain by another resource structure, if they share a common border frequency, e.g. one as an upper frequency border and the other as a lower frequency border.
  • a border may for example be represented by the upper end of a bandwidth assigned to a subcarrier n, which also represents the lower end of a bandwidth assigned to a subcarrier n+1.
  • a resource structure may be considered to be neighboured in time domain by another resource structure, if they share a common border time, e.g. one as an upper (or right in the figures) border and the other as a lower (or left in the figures) border.
  • Such a border may for example be represented by the end of the symbol time interval assigned to a symbol n, which also represents the beginning of a symbol time interval assigned to a symbol n+1.
  • a resource structure being neighboured by another resource structure in a domain may also be referred to as abutting and/or bordering the other resource structure in the domain.
  • a resource structure may general represent a structure in time and/or frequency domain, in particular representing a time interval and a frequency interval.
  • a resource structure may comprise and/or be comprised of resource elements, and/or the time interval of a resource structure may comprise and/or be comprised of symbol time interval/s, and/or the frequency interval of a resource structure may comprise and/or be comprised of sub- carrier/s.
  • a resource element may be considered an example for a resource structure, a slot or mini-slot or a Physical Resource Block (PRB) or parts thereof may be considered others.
  • a resource structure may be associated to a specific channel, e.g. a PUSCH or PUCCH, in particular resource structure smaller than a slot or PRB.
  • Examples of a resource structure in frequency domain comprise a bandwidth or band, or a bandwidth part.
  • a bandwidth part may be a part of a bandwidth available for a radio node for communicating, e.g. due to circuitry and/or configuration and/or regulations and/or a standard.
  • a bandwidth part may be configured or configurable to a radio node.
  • a bandwidth part may be the part of a bandwidth used for communicating, e.g. transmitting and/or receiving, by a radio node.
  • the bandwidth part may be smaller than the bandwidth (which may be a device bandwidth defined by the circuitry/conhguration of a device, and/or a system bandwidth, e.g. available for a RAN).
  • a bandwidth part comprises one or more resource blocks or resource block groups, in particular one or more PRBs or PRB groups.
  • a bandwidth part may pertain to, and/or comprise, one or more carriers.
  • a (e.g., physical) resource block group may comprise a plurality of (e.g., physical) resource blocks, the number may be configured or configurable and/or be dependent on an allocation or scheduling or configuration.
  • a carrier may generally represent a frequency range or band and/or pertain to a central frequency and an associated frequency interval. It may be considered that a carrier comprises a plurality of subcarriers.
  • a carrier may have assigned to it a central frequency or center frequency interval, e.g. represented by one or more subcarriers (to each subcarrier there may be generally assigned a frequency bandwidth or interval).
  • Different carriers may be non-overlapping, and/or may be neighbouring in frequency domain.
  • radio in this disclosure may be considered to pertain to wireless communication in general, and may also include wireless communication utilising millimeter waves, in particular above one of the thresholds 10 GHz or 20 GHz or 50 GHz or 52 GHz or 52.6 GHz or 60 GHz or 72 GHz or 100 GHz or 114 GHz. Such communication may utilise one or more carriers, e.g. in FDD and/or carrier aggregation. Upper frequency boundaries may correspond to 300 GHz or 200 GHz or 120 GHz or any of the thresholds larger than the one representing the lower frequency boundary.
  • a channel may generally be a logical, transport or physical channel.
  • a channel may comprise and/or be arranged on one or more carriers, in particular a plurality of subcarriers.
  • a channel carrying and/or for carrying control signalling/control information may be considered a control channel, in particular if it is a physical layer channel and/or if it carries control plane information.
  • a channel carrying and/or for carrying data signalling/ user information may be considered a data channel, in particular if it is a physical layer channel and/or if it carries user plane information.
  • a channel may be defined for a specific communication direction, or for two complementary communication directions (e.g., UL and DL, or sidelink in two directions), in which case it may be considered to have two component channels, one for each direction.
  • Examples of channels comprise a channel for low latency and/or high reliability transmission, in particular a channel for Ultra- Reliable Low Latency Communication (URLLC), which may be for control and/or data.
  • URLLC Ultra- Reliable Low Latency Communication
  • a symbol may represent and/or be associated to a symbol time length, which may be dependent on the carrier and/or subcarrier spacing and/or numerology of the associated carrier. Accordingly, a symbol may be considered to indicate a time interval having a symbol time length in relation to frequency domain.
  • a symbol time length may be dependent on a carrier frequency and/or bandwidth and/or numerology and/or subcarrier spacing of, or associated to, a symbol. Accordingly, different symbols may have different symbol time lengths.
  • numerologies with different subcarrier spacings may have different symbol time length.
  • a symbol time length may be based on, and/or include, a guard time interval or cyclic extension, e.g. prefix or postfix.
  • a sidelink may generally represent a communication channel (or channel structure) between two UEs and/or terminals, in which data is transmitted between the participants (UEs and/or terminals) via the communication channel, e.g. directly and/or without being relayed via a network node.
  • a sidelink may be established only and/or directly via air interface/s of the participant, which may be directly linked via the sidelink communication channel.
  • sidelink communication may be performed without interaction by a network node, e.g. on fixedly defined resources and/or on resources negotiated between the participants.
  • a network node provides some control functionality, e.g. by configuring resources, in particular one or more resource pool/s, for sidelink communication, and/or monitoring a sidelink, e.g. for charging purposes.
  • Sidelink communication may also be referred to as device-to-device (D2D) communication, and/or in some cases as ProSe (Proximity Services) communication, e.g. in the context of LTE.
  • a sidelink may be implemented in the context of V2x communication (Vehicular communication), e.g. V2V (Vehicle-to- Vehicle), V2I (Vehicle-to-Infrastructure) and/or V2P (Vehicle-to- Person). Any device adapted for sidelink communication may be considered a user equipment or terminal.
  • Participants may share a (physical) channel and/or resources, in particular in frequency domain and/or related to a frequency resource like a carrier) of a sidelink, such that two or more participants transmit thereon, e.g. simultaneously, and/or time-shifted, and/or there may be associated specific channels and/or resources to specific participants, so that for example only one participant transmits on a specific channel or on a specific resource or specific resources, e.g., in frequency domain and/or related to one or more carriers or subcarriers.
  • a (physical) channel and/or resources in particular in frequency domain and/or related to a frequency resource like a carrier) of a sidelink, such that two or more participants transmit thereon, e.g. simultaneously, and/or time-shifted, and/or there may be associated specific channels and/or resources to specific participants, so that for example only one participant transmits on a specific channel or on a specific resource or specific resources, e.g., in frequency domain and/or related to one or more carriers or subcarriers.
  • a sidelink may comply with, and/or be implemented according to, a specific standard, e.g. an LTE-based standard and/or NR.
  • a sidelink may utilise TDD (Time Division Duplex) and/or FDD (Frequency Division Duplex) technology, e.g. as configured by a network node, and/or preconfigured and/or negotiated between the participants.
  • a user equipment may be considered to be adapted for sidelink communication if it, and/or its radio circuitry and/or processing circuitry, is adapted for utilising a sidelink, e.g. on one or more frequency ranges and/or carriers and/or in one or more formats, in particular according to a specific standard.
  • carrier aggregation may refer to the concept of a radio connection and/or communication link between a wireless and/or cellular communication network and/or network node and a terminal or on a sidelink comprising a plurality of carriers for at least one direction of transmission (e.g. DL and/or UL), as well as to the aggregate of carriers.
  • a corresponding communication link may be referred to as carrier aggregated communication link or CA communication link; carriers in a carrier aggregate may be referred to as component carriers (CC).
  • CC component carriers
  • data may be transmitted over more than one of the carriers and/or all the carriers of the carrier aggregation (the aggregate of carriers).
  • a carrier aggregation may comprise one (or more) dedicated control carriers and/or primary carriers (which may e.g. be referred to as primary component carrier or PCC), over which control information may be transmitted, wherein the control information may refer to the primary carrier and other carriers, which may be referred to as secondary carriers (or secondary component carrier, SCC).
  • PCC primary component carrier
  • SCC secondary component carrier
  • control information may be sent over more than one carrier of an aggregate, e.g. one or more PCCs and one PCC and one or more SCCs.
  • a transmission may generally pertain to a specific channel and/or specific resources, in particular with a starting symbol and ending symbol in time, covering the interval therebetween.
  • a scheduled transmission may be a transmission scheduled and/or expected and/or for which resources are scheduled or provided or reserved. However, not every scheduled transmission has to be realized. For example, a scheduled downlink transmission may not be received, or a scheduled uplink transmission may not be transmitted due to power limitations, or other influences (e.g., a channel on an unlicensed carrier being occupied).
  • a transmission may be scheduled for a transmission timing substructure (e.g., a mini-slot, and/or covering only a part of a transmission timing structure) within a transmission timing structure like a slot.
  • a border symbol may be indicative of a symbol in the transmission timing structure at which the transmission starts or ends.
  • Predefined in the context of this disclosure may refer to the related information being defined for example in a standard, and/or being available without specific configuration from a network or network node, e.g. stored in memory, for example independent of being configured. Configured or configurable may be considered to pertain to the corresponding information being set/conhgured, e.g. by the network or a network node.
  • FDE Frequency Domain Equalisation
  • FDF Frequency Domain Filtering
  • FDM Frequency Division Multiplex
  • FFT Fast Fourier Transform GPIO General Purpose Input Output HARQ Hybrid Automatic Repeat Request IAB Integrated Access and Backhaul
  • IFFT Inverse Fast Fourier Transform Im Imaginary part, e.g.

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

Abstract

Est divulgué un procédé de fonctionnement d'un nœud radio (10, 100) dans un réseau de communication sans fil, ledit procédé consistant à transmettre des messages demandant des ressources de transmission sur la base d'un compteur, les messages étant transmis avec une première avance temporelle ou une seconde avance temporelle sur la base du compteur.
EP22967356.1A 2022-11-29 2022-11-29 Demande de ressources pour une communication sans fil Pending EP4627846A1 (fr)

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WO2009061256A1 (fr) * 2007-11-05 2009-05-14 Telefonaktiebolaget L M Ericsson (Publ) Alignement amélioré de la synchronisation dans un système lte
US10070434B2 (en) * 2014-08-08 2018-09-04 Mediatek Inc. User equipment and timing advance value updating method thereof
TWI679869B (zh) * 2016-11-01 2019-12-11 華碩電腦股份有限公司 在無線通訊系統中識別上行鏈路時序前移的方法與裝置
WO2019231305A1 (fr) * 2018-06-01 2019-12-05 Samsung Electronics Co., Ltd. Dispositif et procédé de gestion de procédure d'accès aléatoire dans un système de communication non terrestre
US11082941B2 (en) * 2018-08-09 2021-08-03 Qualcomm Incorporated Timing offset techniques in wireless communications
US11147117B2 (en) * 2018-09-28 2021-10-12 Mediatek Singapore Pte. Ltd. Timing advance validation for transmission in preconfigured uplink resources in NB-IoT
EP4111763A4 (fr) * 2020-10-21 2023-08-09 Samsung Electronics Co., Ltd. Équipement utilisateur et station de base dans un système de communication sans fil, et procédés exécutés par ceux-ci

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