WO2022017522A1 - Transmission efficace d'informations système - Google Patents

Transmission efficace d'informations système Download PDF

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Publication number
WO2022017522A1
WO2022017522A1 PCT/CN2021/108261 CN2021108261W WO2022017522A1 WO 2022017522 A1 WO2022017522 A1 WO 2022017522A1 CN 2021108261 W CN2021108261 W CN 2021108261W WO 2022017522 A1 WO2022017522 A1 WO 2022017522A1
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rmsi
pbch block
coreset
pdsch
pdcch
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English (en)
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Umer Salim
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Huizhou TCL Cloud Internet Corp Technology Co Ltd
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Huizhou TCL Cloud Internet Corp Technology Co Ltd
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Priority to CN202180058625.1A priority Critical patent/CN116325567B/zh
Publication of WO2022017522A1 publication Critical patent/WO2022017522A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • the following disclosure relates to the transmission of system information in a wireless communication system, and more particularly for the transmission of minimum system information in high frequency operation.
  • Wireless communication systems such as the third-generation (3G) of mobile telephone standards and technology are well known.
  • 3G standards and technology have been developed by the Third Generation Partnership Project (3GPP) (RTM) .
  • RTM Third Generation Partnership Project
  • the 3rd generation of wireless communications has generally been developed to support macro-cell mobile phone communications.
  • Communication systems and networks have developed towards a broadband and mobile system.
  • UE User Equipment
  • RAN Radio Access Network
  • CN Core Network
  • LTE Long Term Evolution
  • E-UTRAN Evolved Universal Mobile Telecommunication System Territorial Radio Access Network
  • 5G or NR new radio
  • NR is proposed to utilise an Orthogonal Frequency Division Multiplexed (OFDM) physical transmission format.
  • OFDM Orthogonal Frequency Division Multiplexed
  • the NR protocols are intended to offer options for operating in unlicensed radio bands, to be known as NR-U.
  • NR-U When operating in an unlicensed radio band the gNB and UE must compete with other devices for physical medium/resource access.
  • Wi-Fi RTM
  • NR-U NR-U
  • LAA LAA
  • NR is intended to support Ultra-reliable and low-latency communications (URLLC) and massive Machine-Type Communications (mMTC) are intended to provide low latency and high reliability for small packet sizes (typically 32 bytes) .
  • URLLC Ultra-reliable and low-latency communications
  • mMTC massive Machine-Type Communications
  • a user-plane latency of 1ms has been proposed with a reliability of 99.99999%, and at the physical layer a packet loss rate of 10 -5 or 10 -6 has been proposed.
  • mMTC services are intended to support a large number of devices over a long life-time with highly energy efficient communication channels, where transmission of data to and from each device occurs sporadically and infrequently. For example, a cell may be expected to support many thousands of devices.
  • a UE needs to decode minimum system information (MSI) broadcast by a base station to initiate any form of communication.
  • MSI is broadcast over a physical broadcast channel (PBCH) in the form of a master information block (MIB) , which carries fundamental system information, and remaining system information (RMSI) as a system information block type 1 (SIB1) .
  • PBCH physical broadcast channel
  • MIB master information block
  • RMSI remaining system information
  • SIB1 system information block type 1
  • CORESET control resource set configured through the MIB is called CORESET#0 is used to transmit downlink control information (DCI) which indicates the resources scheduled for the physical downlink shared channel (PDSCH) carrying the SIB1.
  • DCI downlink control information
  • a UE decodes a MIB as part of a cell search procedure, which enables the UE to acquire time and frequency synchronization with a base station, and the detect the physical layer cell indentifier (ID) .
  • the UE receives synchronisation signals (SS) in the form of primary synchronisation signal (PSS) and a secondary synchronization signal (SSS) which are consecutive signals that together define a physical broadcast channel (PBCH) and form a SS/PBCH block.
  • PSS primary synchronisation signal
  • SSS secondary synchronization signal
  • PBCH physical broadcast channel
  • the UE is able to decode the MIB to complete configuration and receive and initiate downlink (DL) and uplink (UL) communications respectively.
  • the disclosure below relates to various improvements to cellular wireless communications systems.
  • a method of transmitting minimum system information from a base station in an OFDM transmission system comprising the steps of: transmitting an MIB in the form of a SS/PBCH block and RMSI information on at least one channel; whereinthe transmitting step includes multiplexing the SS/PBCH with the RMSI information; andtransmitting the RMSI information in the CORESET#0 frequency span.
  • the RMSI information may include at least SIB1 RMSI PDCCH and/or PDSCHchannel.
  • the SS/PBCH may be transmitted over a number n of at least one OFDM symbol and the RMSI SIB1 is transmitted over a number m of at least one OFDM symbol, and wherein n is a multiple of m.
  • the SS/PBCH may be transmitted over a number n of at least one OFDM symbol and the RMSI SIB1 is transmitted over a number m of at least one OFDM symbol, and wherein n is equal to m.
  • the multiplexing step may comprise multiplexing in time.
  • the OFDM system may operate in both licensed and unlicensed spectrum.
  • SCS of the channel carrying the SS/PBCH block may be a multiple of the SCS of the channel carrying the RMSI SIB1, such that the SS/PBCH block and the RMSI SIB1 occupy the same time period.
  • the start of the SS/PBCH block and the start of the RMSI SIB1 may be aligned.
  • the SS/PBCH block and the RMSI SIB1 may be of equivalent length in time and terminate simultaneously.
  • the PDCCH and PDSCH may be transmitted in series or in parallel.
  • a base station configured to perform the methods described herein.
  • a UE configured to decode an MIB transmitted in accordance the methods described herein.
  • Figure 1 shows selected elements of a cellular communications network.
  • FIG. 1 shows a schematic diagram of three base stations (for example, eNB or gNBs depending on the particular cellular standard and terminology) forming a cellular network.
  • each of the base stations will be deployed by one cellular network operator to provide geographic coverage for UEs in the area.
  • the base stations form a Radio Area Network (RAN) .
  • RAN Radio Area Network
  • Each base station provides wireless coverage for UEs in its area or cell.
  • the base stations are interconnected via the X2 interface and are connected to the core network via the S1 interface.
  • a PC5 interface is provided between UEs for SideLink (SL) communications.
  • SL SideLink
  • the base stations each comprise hardware and software to implement the RAN’s functionality, including communications with the core network and other base stations, carriage of control and data signals between the core network and UEs, and maintaining wireless communications with UEs associated with each base station.
  • the core network comprises hardware and software to implement the network functionality, such as overall network management and control, and routing of calls and data.
  • an SS/PBCH block consists of 4 OFDM symbols, numbered in increasing order from 0 to 3 within the SS/PBCH block
  • an SS/PBCH block consists of 240 contiguous subcarriers (20 resource blocks each comprising of 12 sub-carriers) with the subcarriers numbered in increasing order from 0 to 239 within the SS/PBCH block.
  • MIB carries system frame number (SFN) , common sub-carrier spacing (SCS) (common SCS is the SCS used to decode SIB1) , demodulation reference symbols (DMRS) and the necessary information for a UE to decode SIB1. It also provides the information whether the current cell is barred.
  • SFN system frame number
  • SCS common sub-carrier spacing
  • DMRS demodulation reference symbols
  • the base station transmits physical downlink control channel (PDCCH) over a pre-configured region of the time frequency grid, known as control resource set (CORESET) .
  • PDCCH physical downlink control channel
  • CORESET control resource set
  • a search space provides a configuration associated to a given CORESET and specifies symbols and physical resource blocks (PRBs) used by a UE to attempt PDCCH decoding.
  • PRBs physical resource blocks
  • Type 0 common search space is used for PDCCH transmissions, which provide resource allocation for SIB1. This search space is indicated using MIB, carried over PBCH, and can also be indicated using PDCCH-ConfigCommon structure. Type 0 common search space is mapped on the CORESET with identity 0 (CORESET#0) . PDCCH used for SIB1 resource allocation is transmitted with its cyclic redundancy check (CRC) encoded using system information (SI) radio network temporary identifier (RNTI) , which is a fixed parameter known to all devices. This PDCCH is transmitted using DCI format 1_0.
  • SI system information
  • RNTI radio network temporary identifier
  • PBCH embedded in SS/PBCH block carries the following information elements (3GPP TS38.331 and 3GPP TS38.213) :
  • subCarrierSpacingCommon provides the SCS used to transmit PDCCH carrying SIB1 allocation, which can be different from the SCS used to transmit SS/PBCH block.
  • controlResourceSetZero information element provides a row index using a 4-bit indication within a CORESET configuration table.
  • CORESET configuration table For each of its constituent rows, CORESET configuration table provides number of PRBs, number of symbols, resource block offset with respect to the SS/PBCH block, and the multiplexing pattern of SS/PBCH block and the CORESET.
  • 3GPP Technical Standard38.213 contains more details.
  • searchSpaceZero provides an index (4-bit indication) pointing to a specific row within a search space configuration table.
  • 5G NR has specified multiple search space configuration tables, where each table is applicable to a given frequency range and a given multiplexing pattern of SS/PBCH block and CORESET.
  • Search space configuration table provides localization of search space in the frame, slot and the number of search space sets per slot so that the UEs can determine the correct search space for their PDCCH decoding attempts.
  • 3GPP Technical Standard38.213 contains more details.
  • the PDCCH scheduling SIB1 uses DCI format 1_0 which provides the resource allocation and other parameters necessary to decode PDSCH carrying SIB1.
  • DCI format 1_0 carries a field Time domain resource assignment (TDRA) .
  • TDRA indication from the PDCCH and dmrs-TypeA-Position indication from MIB help to choose the appropriate row from TDRA table. Each row from this table provides the information of time resource using slot offset, starting symbol and the length of the scheduled resource for PDSCH which will carry SIB1 information.
  • SIB1 provides base station selection information, system information scheduling information, serving base station configuration and other emergency related information elements.
  • Serving base station configuration comprises of downlink config common, uplink config common.
  • DL config common in turn provides information regarding DL frequency, DL bandwidth part (BWP) and configuration for paging and broadcast control channels.
  • BWP configuration comprises of common configuration for PDCCH and PDSCH.
  • UL configure common provides frequency information for UL, initial UL BWP.
  • BWP UL provides information about RACH, PUCCH and PUSCH configuration.
  • FR1 frequency range 1 and FR2.
  • FR2 was originally supposed to be up to 6 GHz, but later extended to 7.125 GHz.
  • FR2 was originally specified from 24.25 GHz to 52.6 GHz.
  • Release-15 and Release-16 operation for 5G New Radio (NR) was specified for these frequency ranges.
  • Release-17 aims to extend FR2 operation, going up to 71 GHz. These extensions may go to 100 GHz or even beyond due to wide availability of spectrum at such higher carrier frequencies and the progress in antennas/RF that allow efficient communication at these frequencies which was previously deemed very difficult. Systems operating at such higher carrier frequencies will resort to beam based transmissions.
  • SIB1 or RMSI scheduling command in the form of PDCCH and the information in PDSCH
  • the base station may employ up to 64 beams. This incurs considerable overhead and imposes certain scheduling restrictions due to mandatory beam sweeps.
  • the base station will transmit a SS/PBCH block, PDCCH in CORESET 0 and associated PDSCH carrying SIB1 in each beam direction.
  • transmission of SS/PBCH block, PDCCH and PDSCH for SIB1 require the activation of each beam for a minimum duration allowing such transmissions, resulting in waste of time-frequency resource leading to very poor system efficiency.
  • the issue will become more serious with new combinations for SCS of SS/PBCH block and PDCCH scheduling SIB1.
  • the issue is aggravated in case of unlicensed spectrum due to channel uncertainty, where a base station may lose the channel ownership in the gaps between any of these transmissions or due to the requirement of performing channel access procedures between these transmissions.
  • the transmission of minimum system information describes methods of multiplexing between SS/PBCH block and CORESET 0.
  • the gap minimization schemes described herein provide protection against losing the channel ownership. This makes them attractive for operation over shared carriers. Additionally, the schemes described circumvent requirements to ensure channel access after a transmission gap. As a result, the methods described herein are suitable in unlicensed spectrum.
  • CORESET configuration and PDSCH resource scheduling options ensure the transmission of PDCCH in CORESET0 and the scheduled PDSCH confined within the same time duration as of the SS/PBCH block. This leads to the minimum active time requirement in each single beam and minimizes the beam switching which introduces delays and transients.
  • This uses comparatively larger frequency resource span, as different pieces of minimum system information are frequency multiplexed. This may though be quite acceptable at higher carrier frequencies where typically large bandwidths are available. This is suitable for operation over unlicensed shared carriers as it minimizes the requirements for channel sensing in different beams and also reduces the probability of channel ownership being lost to some other devices during the transmission of SS/PBCH block and RMSI.
  • the individual pieces of system information are transmitted in the form of one inseparable cluster.
  • the system transmits minimum system information of master information block (MIB) in a SS/PBCH block and the remaining minimum system information (RMSI) , also called SIB1, with a shortest possible footprint in time.
  • MIB master information block
  • RMSI remaining minimum system information
  • the SS/PBCH block uses fixed structure comprising of 4 OFDM symbols and transmits the RMSI (scheduling PDCCH and PDSCH) in full time overlap with SS/PBCH block despite their different sub-carrier spacings (SCS) .
  • This method uses combinations of SCS where the SCS of SS/PBCH block can be equal, 2x or 4x of the SCS of PDCCH scheduling RMSI.
  • the RMSI is multiplexed into the same time footprint as the SS/PBCH block, so as to avoid the RMSI extending beyond the SS/PBCH block. This in turn reduces the overhead in each beam direction and provide decoding advantages as a result of the increased amount of RMSI data transmitted in the PDSCH.
  • Each base station transmits a SS/PBCH block, allowing each UE to synchronize, and then transmit SIB1 (RMSI) scheduled through search space set 0 over CORESET#0.
  • SIB1 RMSI
  • This obliges the base stations to transmit SS/PBCH blocks, PDCCH transmitted over CORESET#0 scheduling SIB1 and SIB1 in all the beam directions as part of the basic cell coverage, enabling the UEs to bootstrap based upon this minimum system information.
  • SS/PBCH blocks, PDCCH and SIB1 need to be multiplexed in a smallest possible number of symbols.
  • SS/PBCH block is a fixed set of signalling transmitted over 4 OFDM symbols (OS) with the sub-carrier spacing (SCS) of SS/PBCH block.
  • OS OFDM symbols
  • SCS sub-carrier spacing
  • SS/PBCH block and SIB1 use different sub-carrier spacing (SCS)
  • SCS sub-carrier spacing
  • the method enables SIB1 transmission and multiplexing when a SS/PBCH block is using the SCS which is 4 times larger than the SCS of PDCCH scheduling PDSCH carrying SIB1.
  • the 4 symbols carrying SS/PBCH block are equal to just one single symbol in the numerology of PDCCH of SIB1.
  • This setting is applicable to ⁇ SS/PBCH block, PDCCH ⁇ SCS of ⁇ 240, 60 ⁇ , ⁇ 480, 120 ⁇ , ⁇ 960, 240 ⁇ , ⁇ 1920, 480 ⁇ KHz and other potential SCS combinations having similar ratio.
  • the proposal for the multiplexing of CORESET 0 with SS/PBCH block and associated PDSCH carrying SIB1 (RMSI) is shown below.
  • SS/PBCH block is transmitted over 4 OFDM symbols n, n+1, n+2 and n+3. This is equivalent to one OFDM symbol ‘m’ in the numerology used by PDCCH in CORESET 0 and SIB1 PDSCH.
  • CORESET 0 is configured over one OFDM symbol which spans the same time duration as of the 4 OFDM symbols of the SS/PBCH block.
  • PDCCH transmitted in CORESET 0 schedules PDSCH carrying SIB1 (RMSI) over a duration of 1 OFDM symbol which is also aligned with CORESET 0 and SS/PBCH block.
  • SIB1 RMSI
  • the relevant search space configuration table should add entries so that the first symbol index value is aligned with the first OFDM symbol of SS/PBCH block.
  • Default TDRA table for PDSCH resource allocation supports the scheduling of PDSCH such that the starting OFDM symbol, denoted as S in TDRA tables, is aligned with the start of the CORESET0 and length of the allocated resource, denoted as L in TDRA tables, can be configured to be 1 OFDM symbol.
  • S in TDRA tables the starting OFDM symbol
  • L in TDRA tables length of the allocated resource
  • the default active DL bandwidth part is limited to the frequency span of the CORESET 0. This means that the UE is not expected to be scheduled outside of the frequency resource span indicated for CORESET 0.
  • the base station can then update the active DL BWP through SIB1 signalling and requires the base station updates the active DL BWP to be greater than the CORESET 0 frequency span.
  • the system is configured for a CORESET 0 over a frequency span and to use a portion of configured CORESET 0 PRBs for transmission of PDCCH. This allows scheduling of PDSCH carrying RMSI over another portion of frequency resource span indicated for CORSET 0, by transmitting RMSI data over PDSCH scheduled in the resource configured for CORESET 0.
  • Table 1 uses, as an illustration only, a PDCCH transmitted in CORESET 0 using 50%of the available CORESET 0 resource frequency span and the remaining 50%of the available CORESET 0 resource frequency span used for the RMSI PDSCH.
  • One approach allows is that the whole frequency span of CORESET 0 can be indicated in PDCCH as the resource for PDSCH and the UE uses the decoded PDCCH to rate match around it.
  • Another approach is to allocate precisely the frequency location of PDSCH within CORESET 0 using the frequency allocation field in PDCCH.
  • the above example shows a SS/PBCH block, CORESET0 and RMSI PDSCH without any frequency gaps.
  • the actual configuration/scheduling may include frequency gap (PRBs) between blocks.
  • PRBs frequency gap
  • the blocks span the same time duration despite the different SCSs, leading to the minimization of time duration used for the transmission of SS/PBCH block and RMSI.
  • the actual frequency resource span of CORESET 0, RMSI PDSCH can be higher or lower compared to SS/PBCH block, or split around the SS/PBCH block. This can be easily configured through resource block offset indication as part of CORESET 0 configuration.
  • an example of an RMSI transmission with an SS/PBCH block using the SCS which is twice the SCS of PDCCH scheduling PDSCH carrying SIB1 is illustrated in Table 2 below.
  • the 4 OFDM symbols carrying SS/PBCH block are equal to two OFDM symbols in the numerology of PDCCH of SIB1.
  • This setting is applicable to ⁇ SS/PBCH block, PDCCH ⁇ SCS of ⁇ 120, 60 ⁇ , ⁇ 240, 120 ⁇ , ⁇ 480, 240 ⁇ , ⁇ 960, 480 ⁇ , ⁇ 1920, 960 ⁇ KHz and other potential SCS combinations having this ratio.
  • the two OFDM symbols in the numerology of PDCCH are used both for CORESET 0 configuration and the scheduling of RMSI PDSCH in a frequency multiplexed manner with SS/PBCH block.
  • This multiplexing method is shown in Table 2.
  • This table shows SS/PBCH block spanning 4 OFDM symbol n, n+1, n+2 and n+3.
  • the two equivalent OFDM symbols in the numerology of PDCCH, m and m+1, are used to configure CORESET 0 and to allocate resources for RMSI PDSCH scheduled through PDCCH transmitted in CORESET 0.
  • RMSI PDSCH For operation with initial active DL BWP, which is confined to the CORESET 0 configured frequency resource span, RMSI PDSCH must be limited to this resource. Once the active DL BWP has been updated by the base station, RMSI PDSCH can be allocated within the DL BWP which is not necessarily confined within the CORESET 0 configured frequency resource span. In case the initial active DL BWP is restricted to CORESET 0 configured frequency resource span, PDCCH scheduling RMSI PDSCH can be transmitted over a portion of CORESET 0 configured resource and the remaining portion of the active DL BWP can be used to schedule RMSI PDSCH, as shown in Table 2.
  • the scheduling command (PDCCH) and the data carrying MSI (PDSCH) are transmitted frequency multiplexed with SS/PBCH block, while being time domain multiplexed with each other.
  • the 4 symbols of SS/PBCH block are equal to 2 OFDM symbols in the numerology of PDCCH.
  • the two OFDM symbols in the numerology of PDCCH (in CORESET0) are equally split in time, allocating 1 OFDM symbol for CORESET 0 configuration and RMSI PDSCH is scheduled on the second OFDM symbol.
  • This method thus has CORESET 0 configuration and RMSI PDSCH scheduling in a TDMA fashion with each other.
  • CORESET 0 and SIB1 (RMSI) PDSCH jointly are frequency domain multiplexed with SS/PBCH block.
  • Table 3 shows a CORESET0 configuration and RMSI PDSCH scheduling.
  • the SS/PBCH block indicates 1 OFDM symbol CORESET 0 configuration and the PDCCH transmitted within CORESET 0 schedules PDSCH (carrying RMSI) with a start symbol aligned with the last 2 OFDM symbols of SS/PBCH block and a length of 1 OFDM symbol.
  • the CORESET configuration for ⁇ SS/PBCH block, PDCCH ⁇ SCS ⁇ x, x/2 ⁇ KHz supports 1 OFDM symbol CORESET 0 configuration
  • the search space Type 0 needs to define a configuration with an entry such that it is aligned to the first OFDM symbol of the SS/PBCH block, and the default TDRA table has an entry with a PDSCH of length 1 OFDM symbol, starting at symbol m+1, aligned with the last 2 OFDM symbols of the SS/PBCH block.
  • CORESET 0 and PDSCH are multiplexed in time, and thefrequency resource spans scheduled for PDSCH can be restricted within the CORESET 0 configured frequency resource spans and will lie within initial active DL BWP.
  • CORESET 0 may be configured over a single OFDM symbol aligned with the first two OFDM symbols of SS/PBCH block, where SIB1 (RMSI) PDSCH is allocated to a time resource spanning two OFDM symbols aligned with the 4 OFDM symbols of SS/PBCH block and is illustrated in Table 4.
  • RMSI SIB1
  • CORESET 0 and PDSCH can be frequency multiplexed in the first OFDM symbol. This may be utilised when single symbol PDSCH is not deemed sufficient to carry SIB1 data. In this case, PDSCH can be allocated additional resources for better protection.
  • PDCCH and PDSCH for RMSI are frequency multiplexed with SS/PBCH block, but time and frequency multiplexed with each other.
  • RMSI PDSCH For operation with initially active DL BWP, which is confined to the CORESET 0 configured frequency resource span, RMSI PDSCH must be limited to this same resource.
  • the PDCCH is transmitted over a portion of CORESET 0 configured frequency span resource and the remaining portion of CORESET 0 configured frequency resource span can be used to transmit SIB1 PDSCH.
  • a SS/PBCH block and a PDCCH over CORESET 0 scheduling PDSCH carrying RMSI having the same SCS is illustrated in Table 5.
  • Table 5 Four OFDM symbols in the numerology of PDCCH (in CORESET 0) are split such that 1 OFDM symbol is used for CORESET 0 configuration and 3 OFDM symbols are allocated to RMSI PDSCH.
  • the SIB1 can contain a proportionally more information than that carried in the PDCCH transmitted in CORESET 0 and this provides proportionally more RMSI PDSCH resource.
  • time domain resource allocation in TDRA table needs to add new entries allowing scheduling of PDSCH over a length of 3 OFDM symbols, with a start symbol aligned to the 2 nd OFDM symbol n+1 of SS/PBCH block.
  • the frequency resource spans scheduled for PDSCH can be restricted within the CORESET 0 configured frequency resource spans and will lie within initial active DL BWP. This can be use when active DL BWP is restricted to the frequency resource span of the CORESET 0.
  • Table 6 A method where four OFDM symbols in the numerology of PDCCH (in CORESET0) are split such that 1 OFDM symbol is allocated for CORESET 0 configuration and all 4 OFDM symbols aligned with SS/PBCH block are allocated to RMSI PDSCH is illustrated in Table 6.
  • This provides more resource allocation for SIB1 (RMSI) PDSCH compared to the previous example, and may improve the faster transmission of minimum system information.
  • Table 5 shows the proposed design with 1 OFDM symbol CORESET 0 configuration and 4 OFDM symbols used for the scheduling of RMSI PDSCH.
  • PDCCH is transmitted over a portion of CORESET 0 frequency resource span in the first OFDM symbol, and the remaining frequency resource span of DL BWP over the first symbol and the next 3 symbols are used for the transmission of SIB1 (RMSI) PDSCH.
  • SIB1 SIB1
  • any of the devices or apparatus that form part of the network may include at least a processor, a storage unit and a communications interface, wherein the processor unit, storage unit, and communications interface are configured to perform the method of any aspect of the present invention. Further options and choices are described below.
  • the signal processing functionality of the embodiments of the invention especially the gNB and the UE may be achieved using computing systems or architectures known to those who are skilled in the relevant art.
  • Computing systems such as, a desktop, laptop or notebook computer, hand-held computing device (PDA, cell phone, palmtop, etc. ) , mainframe, server, client, or any other type of special or general purpose computing device as may be desirable or appropriate for a given application or environment can be used.
  • the computing system can include one or more processors which can be implemented using a general or special-purpose processing engine such as, for example, a microprocessor, microcontroller or other control module.
  • the computing system can also include a main memory, such as random access memory (RAM) or other dynamic memory, for storing information and instructions to be executed by a processor. Such a main memory also may be used for storing temporary variables or other intermediate information during execution of instructions to be executed by the processor.
  • the computing system may likewise include a read only memory (ROM) or other static storage device for storing static information and instructions for a processor.
  • ROM read only memory
  • the computing system may also include an information storage system which may include, for example, a media drive and a removable storage interface.
  • the media drive may include a drive or other mechanism to support fixed or removable storage media, such as a hard disk drive, a floppy disk drive, a magnetic tape drive, an optical disk drive, a compact disc (CD) or digital video drive (DVD) (RTM) read or write drive (R or RW) , or other removable or fixed media drive.
  • Storage media may include, for example, a hard disk, floppy disk, magnetic tape, optical disk, CD or DVD, or other fixed or removable medium that is read by and written to by media drive.
  • the storage media may include a computer-readable storage medium having particular computer software or data stored therein.
  • an information storage system may include other similar components for allowing computer programs or other instructions or data to be loaded into the computing system.
  • Such components may include, for example, a removable storage unit and an interface , such as a program cartridge and cartridge interface, a removable memory (for example, a flash memory or other removable memory module) and memory slot, and other removable storage units and interfaces that allow software and data to be transferred from the removable storage unit to computing system.
  • the computing system can also include a communications interface.
  • a communications interface can be used to allow software and data to be transferred between a computing system and external devices.
  • Examples of communications interfaces can include a modem, a network interface (such as an Ethernet or other NIC card) , a communications port (such as for example, a universal serial bus (USB) port) , a PCMCIA slot and card, etc.
  • Software and data transferred via a communications interface are in the form of signals which can be electronic, electromagnetic, and optical or other signals capable of being received by a communications interface medium.
  • computer program product may be used generally to refer to tangible media such as, for example, a memory, storage device, or storage unit.
  • These and other forms of computer-readable media may store one or more instructions for use by the processor comprising the computer system to cause the processor to perform specified operations.
  • Such instructions generally 45 referred to as ‘computer program code’ (which may be grouped in the form of computer programs or other groupings) , when executed, enable the computing system to perform functions of embodiments of the present invention.
  • the code may directly cause a processor to perform specified operations, be compiled to do so, and/or be combined with other software, hardware, and/or firmware elements (e.g., libraries for performing standard functions) to do so.
  • the non-transitory computer readable medium may comprise at least one from a group consisting of: a hard disk, a CD-ROM, an optical storage device, a magnetic storage device, a Read Only Memory, a Programmable Read Only Memory, an Erasable Programmable Read Only Memory, EPROM, an Electrically Erasable Programmable Read Only Memory and a Flash memory.
  • the software may be stored in a computer-readable medium and loaded into computing system using, for example, removable storage drive.
  • a control module (in this example, software instructions or executable computer program code) , when executed by the processor in the computer system, causes a processor to perform the functions of the invention as described herein.
  • inventive concept can be applied to any circuit for performing signal processing functionality within a network element. It is further envisaged that, for example, a semiconductor manufacturer may employ the inventive concept in a design of a stand-alone device, such as a microcontroller of a digital signal processor (DSP) , or application-specific integrated circuit (ASIC) and/or any other sub-system element.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • aspects of the invention may be implemented in any suitable form including hardware, software, firmware or any combination of these.
  • the invention may optionally be implemented, at least partly, as computer software running on one or more data processors and/or digital signal processors or configurable module components such as FPGA devices.
  • an embodiment of the invention may be physically, functionally and logically implemented in any suitable way. Indeed, the functionality may be implemented in a single unit, in a plurality of units or as part of other functional units.
  • the present invention has been described in connection with some embodiments, it is not intended to be limited to the specific form set forth herein. Rather, the scope of the present invention is limited only by the accompanying claims. Additionally, although a feature may appear to be described in connection with particular embodiments, one skilled in the art would recognise that various features of the described embodiments may be combined in accordance with the invention. In the claims, the term ‘comprising’ does not exclude the presence of other elements or steps.

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

Abstract

La présente invention concerne des procédés permettant de transmettre des informations système minimum à partir d'une station de base située dans un système de transmission OFDM. Un MIB, sous la forme d'un bloc SS/PBCH, est multiplexé avec des informations RMSI pouvant inclure un PDCCH et un PDSCH et les informations RMSI sont transmises dans la plage de fréquence CORESET#0. Le SS/PBCH et les informations RMSI occupent la même empreinte dans le temps mais peuvent comprendre un nombre différent de symboles OFDM. Le système OFDM peut fonctionner dans le spectre sous licence et sans licence.
PCT/CN2021/108261 2020-07-24 2021-07-23 Transmission efficace d'informations système Ceased WO2022017522A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024020863A1 (fr) 2022-07-27 2024-02-01 Apple Inc. Systèmes et procédés d'amélioration de mesures d'ue de couche 1 et de couche 3
WO2025224585A1 (fr) * 2024-04-26 2025-10-30 Nokia Technologies Oy Indication de dmrs améliorée pour accès à une cellule

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025043503A1 (fr) * 2023-08-29 2025-03-06 Nokia Shanghai Bell Co., Ltd. Répétition d'un canal de commande de liaison descendante physique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180234931A1 (en) * 2017-02-16 2018-08-16 Qualcomm Incorporated Synchronization signal blocks
WO2019050165A1 (fr) * 2017-09-06 2019-03-14 한국전자통신연구원 Procédé d'émission et de réception d'informations de système dans un système de communication
CN110971322A (zh) * 2018-09-30 2020-04-07 维沃移动通信有限公司 一种信息传输方法、网络设备及终端

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3535940B1 (fr) * 2016-12-07 2021-07-21 LG Electronics Inc. Procédé et appareil de configuration d'un canal de commande pour une nouvelle radio (nr) dans un système de communication sans fil
US10492157B2 (en) * 2017-01-04 2019-11-26 Samsung Electronics Co., Ltd. Method and apparatus for system information delivery in advanced wireless systems
KR101999702B1 (ko) * 2017-11-17 2019-07-12 엘지전자 주식회사 하향링크 채널을 송수신하는 방법 및 이를 위한 장치
WO2019216690A1 (fr) * 2018-05-11 2019-11-14 엘지전자 주식회사 Procédé permettant de transmettre et de recevoir des informations de système et appareil associé
US11019588B2 (en) * 2018-09-11 2021-05-25 Samsung Electronics Co., Ltd. Method and apparatus for advanced frequency offset indication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180234931A1 (en) * 2017-02-16 2018-08-16 Qualcomm Incorporated Synchronization signal blocks
WO2019050165A1 (fr) * 2017-09-06 2019-03-14 한국전자통신연구원 Procédé d'émission et de réception d'informations de système dans un système de communication
CN110971322A (zh) * 2018-09-30 2020-04-07 维沃移动通信有限公司 一种信息传输方法、网络设备及终端

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI, HISILICON: "NR Paging Options", 3GPP DRAFT; R2-1805788 PAGING OPTIONS, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Sanya, China; 20180416 - 20180420, 14 April 2018 (2018-04-14), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051429406 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024020863A1 (fr) 2022-07-27 2024-02-01 Apple Inc. Systèmes et procédés d'amélioration de mesures d'ue de couche 1 et de couche 3
EP4548679A4 (fr) * 2022-07-27 2025-08-27 Apple Inc Systèmes et procédés d'amélioration de mesures d'ue de couche 1 et de couche 3
WO2025224585A1 (fr) * 2024-04-26 2025-10-30 Nokia Technologies Oy Indication de dmrs améliorée pour accès à une cellule

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