R&S®SMW-K130 OneWeb User-Defined Signal Generation

  • Overview
OneWeb User-Defined Signal Generation
OneWeb User-Defined Signal Generation
OneWeb User-Defined Signal Generation

Key facts

  • Fully standard-compliant OneWeb signal generation
  • Highest flexibility for customized signal design
  • Signal generation for forward link (SC-TDM) and reverse link (SC-FDMA)
  • Support of forward link and reverse link parameter settings

Brief description

The R&S®SMW-K130 option allows users to easily generate standard-compliant OneWeb signals. This option support both forward link and reverse link. Users have access to all relevant setting parameters for these transmission links.

Specifications

OneWeb signal generation for the R&S®SMW-K130 option
RF frequencyuser-selectable in entire frequency range
RF output leveldefault: –30 dBm

Key facts

  • Fully standard-compliant OneWeb signal generation
  • Highest flexibility for customized signal design
  • Signal generation for forward link (SC-TDM) and reverse link (SC-FDMA)
  • Support of forward link and reverse link parameter settings
  • Define multicarrier scenarios for reverse link
  • Single carrier scenarios for forward link
  • Test of receivers in user terminal, ground station and satellite payload
  • Test of RF components, ground stations, satellite payloads and user terminals

Brief description

The R&S®SMW-K130 option allows users to easily generate standard-compliant OneWeb signals. This option support both forward link and reverse link. Users have access to all relevant setting parameters for these transmission links. It supports a single-carrier scenario for the forward link with an occupied bandwidth of 250 MHz. For the reverse link, users can configure single-carrier scenarios with a 20 MHz carrier. Multi-carrier scenarios for the reverse link can be generated by using carrier aggregation.

Specifications

General settings
RF Frequency range user-selectable in entire frequency range of respective Rohde & Schwarz instrument
RF output level default: –30 dBm,
user-selectable in entire output level range of respective Rohde & Schwarz instrument
Sequence lengthsequence length can be entered in frames (10 ms each); the maximum length depends on the available ARB memory options and the configured OneWeb settings, e.g. the channel bandwidth and the filter settings
Mode predefined and user defined modes
Baseband filterstandardroot cosine with roll off 0.085
 othersee data sheet of respective Rohde & Schwarz instrument, “baseband generator” section
Clippingsetting of clipping value relative to highest peak in percent; clipping takes place prior to baseband filtering; clipping reduces the crest factor
Modes vector |i + j q|
scalar |i|, |q|
Clipping level 1 % to 100 %
Marker restart
Triggering see data sheet of respective Rohde & Schwarz instrument, “I/Q baseband generator” section
Link direction downlink, uplink
Modes vector |i + j q|
scalar |i|, |q|
Physical layer modedownlinkSC-TDM
 uplinkSC-FDMA
Downlink simulation
Physical settings
Channel bandwidth 250 MHz
Sampling rate 230.4 MHz
Cell ID 0 to 255
RA-RNTI 1 to 240
Downlink reference signal structure
Reference signal powerpower of reference symbol0.00 dB
P-SYNC powerdetermines the power of the primary synchronization signal–80 dB to +10 dB, in steps of 0.001dB
Global MIMO configurationsimulated cell specific antenna configuration1
Number of configurable subframesdetermines the number of configurable subframes; the subframe configurations are used periodically
Note: P-SYNC and PBCH are configured globally and therefore not copied here. The use of this function ensures a valid frame configuration.
up to 40 subframes The actual range depends on the sequence length
Allocation table
Code wordUp to 2 code words can be configured.1/1,1/2, 2/2
Modulationdetermines modulation scheme usedQPSK, 8PSK, 16QAM
Number of resource blocks (RB)defines size of selected allocation in terms of resource blocks1 to 1152
Offset RBdefines start resource block of selected allocation Note: This value is read-only if auto mode is activated for selected allocation.0 to total number of RBs – 1
Data sourcedetermines data source of selected allocation Note: Data sources for users 0 to 3 can be configured in the Configure User panel. td>user 0, user 1, user 2, user 3, PN9, PN11, PN15, PN16, PN20, PN21 to PN 23, data list, pattern, All 0, All 1
Powerdetermines power of selected allocation–80 dB to +10 dB in steps of 0.001 dB
Content typedetermines type of selected allocationPDSCH, PDCCH, PBCH
Statesets state of selected allocationon, off
Enhanced settings PBCH
Scrambling state on, off
Channel coding stateenables channel coding (FEC)on, off
MIB (including SFN)activates automatic MIB generation for PBCHon, off
SFN offsetsets starting system frame number encoded in MIB0 to 1020 in steps of 4
MIB spare bitssets the MIB spare bitspattern of 16 bits
Transport block size 32
Enhanced settings PBSCH
Scrambling state on, off
UE ID/n_RNTIuser equipment identifier (n_RNTI) for selected allocation0 to 65535
Channel codingstate enables channel coding (FEC)on
Transport block size 16 to 850656
Redundancy version index 0 to 3
IR soft buffer size 31296 to 458400
Configuration of PCFICH, PDCCH
Stateenables PCFICH, PDCCHon, off
PCFICH powerdetermines power of PCFICH–80 dB to +10 dB in steps of 0.001 dB
PCFICH scrambling state on, off
PCFICH CFI 1 to 12
PDCCH power –80 dB to +10 dB in steps of 0.001 dB
PDCCH scrambling state on, off
PDCCH format 0 to 4
User User1...4, P-RNTI, SI-RNTI, RA-RNTI
Number of CCEs depends on selected PDCCH format
CCE index 0 to 599
Data source PDCCH PN9, PN11, PN15 to PN 23, data list, pattern, All 0, All 1
DCI format 0, 1ow,1a, 2ow, 3, 3a, 3ow
Search spaces Auto, common, UE-specific
DCI format 0 configuration
Carrier indicator field 0 to 7
Resource block assigment 0 to 8191
Modulation, coding scheme and redundancy version 0 to 31
New data indicator on, off
TPC command for PUSCH 0 to 3
Cyclic shift for DMRS 0 to 11
CSI/CQI request 0 to 3
SRS request 0 to 1
DCI format 1OW configuration
Resource block assignment 0 to 1048575
Modulation and coding scheme 0 to 31
HARQ process number 0 to 63
New data indicator on, off
Redundancy version 0 to 3
TPC command for PDCCH 0 to 3
DCI format 1A configuration
Mode PDSCH, PRACH
Resource block assignment 0 to 26564
Modulation and coding scheme 0 to 31
HARQ process number 0 to 63
New data indicator on, off
Redundancy version 0 to 3
TPC command for PDCCH 0 to 3
SRS request 0 to 1
Preamble index 0 to 63
PRACH mask index 0 to 15
DCI format 2OW configuration
Resource block assignment 0 to 524287
TPC command for PUCCH 0 to 3
HARQ process number 0 to 63
MCS for a first transmission 0 to 31
MCS for a retransmission 0 to 3
New data indicator on, off
Redundancy version 0 to 3
DCI format 3 configuration
TPC command pattern of 64 bits
DCI format 3a configuration
TPC command pattern of 64 bits
DCI format 3a configurationThe configure user dialog makes it possible to define and configure up to four scheduled users that can be distributed over the entire frame configuration by setting the data source of a specific allocation in the allocation table to User. Subframe allocations that are not adjacent or allocations of a different subframe can be configured to allow the use of a common data source.
Transmission modeselects the downlink transmission modemode 1OW, mode 2OW
Scrambling stateenables scrambling for all allocations belonging to the selected useron, off
Channel coding stateenables channel coding (FEC) for all allocations belonging to the selected useron, off
UE ID/n_RNTIuser equipment identifier (n_RNTI) for selected user0 to 65535
Data sourcedetermines data source of user currently being configuredPN9, PN11, PN15, PN16, PN20, PN21. PN 23, data list, pattern, All 0, All 1
UE category 1 to 5
Uplink simulation
General settings
Channel bandwidthdetermines the channel bandwidth used20 MHz
FFT size 2048
Number of resource blocks 100
Cell ID 0 to 255
Physical cell ID group 0 to 167
Physical layer ID 0 to 2
SFN offset 0 to 2
Group hoppingactivates reference signal group hopping while deactivating sequence hoppingon, off
Sequence hoppingonly selectable if group hopping is deactivatedon, off
Delta sequence shift for PUSCH 0 to 29
n(1)_DMRSsets the broadcast part of the DMRS index0 to 11
PRACH configuration 0 to 47
Restricted set on, off
PRACH frequency offset 0 to 94
Number of RBs used for PUCCH 0 to 100
Delta shift 1 to 3
N(1)_csif number of RBs used for PUCCH is 0always 0
 otherwise0 to 6, but only multiples of delta shift
N(2)_RBif N(1)_cs is 00 to number of RBs used for PUCCH
 otherwise0 to number of RBs used for PUCCH - 1
SRS subframe configuration 0 to 15
SRS bandwidth configuration 0 to 7
A/N-SRS simultaneous TXenables simultaneous transmission of SRS and PUCCHon, off
Carrier aggregation settings
Activate carrier aggregation on, off
Cell index 0, 1
Phy cell ID 0 to 503
Bandwidthbandwidth of the SCell20 MHz
Delta f in MHzdefines the frequency shift for this SCell relative to the PCell
   Setting range depends on the respective
Rohde & Schwarz instrument
   Setting resolution 0.1 MHz
Duplexing FDD
n(1)_DMRSsets the broadcast part of the DMRS index0 to 11
SRS subframe configuration 0 to 15
SRS bandwidth configuration 0 to 7
Delay(ns)configures a time delay of the SCell relative to the PCell0 to 700000
Stateactivates/deactivates this cellon, off
Resource allocation uplink
Select user equipment>Up to 4 UEs can be configured individually and allocated to the subframes
Number of configurable subframesdetermines the number of configurable uplink subframes; the subframe configurations are used periodically Note: Sounding reference signals are configured globally and therefore not copied here.up to 40 subframes
Cyclic prefixdetermines whether a normal or extended cyclic prefix is used for a specific subframe Note: It automatically determines the number of SC-FDMA symbols per subframenormal
Allocation table
Content typeUE can be set to PUSCH or PUCCH or PUACHPUSCH, PUCCH, PUACH
Modulationdetermines the modulation scheme used if content type is PUSCH or PUACH or the PUCCH format if content type is PUCCHQPSK, 8PSK,16QAM or format 1, 1a, 1b, 2, 2a, 2b, 3
Number of resource blocks (RB)defines size of selected allocation in terms of resource blocks0 to 100
Offset VRBsets the virtual resource block offset; the physical resource block offset for the two slots of the corresponding subframe is set automatically depending on the frequency hopping settings0 to 99
Powerdetermines power of selected allocation–80 dB to +10 dB in steps of 0.01 dB
Statesets state of selected allocationon, off
User equipment configuration
UE ID/n_RNTIuser equipment identifier (n_RNTI) for selected user equipment0 to 65535
Powersets power level of selected UE–80 dB to +10 dB in steps of 0.01 dB
Mode standard, PRACH
Data sourcedetermines data source used for PUSCH or PUACH of selected UEPN9, PN11, PN15,PN16, PN20,P
Scrambling statevalid for both PUSCH and PUACHon, off
Channel coding stateenables channel coding (FEC) and multiplexing of control and data information valid for both PUSCH and PUACHon, off
Channel coding mode PUSCHselects whether data, control information or both is transmitted on the PUSCHUL-SCH only, UCI + UL-SCH, UCI only
Channel coding mode PUACH PUACH UL-SCH only
DRS power offsetsets power of DRS relative to power level of PUSCH/PUACH/PUCCH allocation of corresponding subframe–80 dB to +10 dB in steps of 0.001 dB
SRS stateenables sending of sounding reference signalson, off
Transmit trigger type 0 SRSenables the transmission of SRS trigger type 0 
SRS power offsetsets power of SRS relative to power level of corresponding UE–80 dB to +10 dB in steps of 0.001 dB
SRS cyclic shiftcyclic shift used for SRS0 to 1
Configuration index I_SRSSRS configuration index0 to 636 for FDD
Bandwidth config. B_SRSSRS bandwidth configuration0 to 3
Transmission comb k_TCSRS transmission comb0 to 1
Hopping bandwidth b_hopSRS hopping bandwidth0 to 3
Frequency domain position n_RRCSRS frequency domain position0 to 100
Enhanced settings for PUSCH
Cyclic shift fieldfor DRS0 to 7
n(2)_DMRS,0sets for layer 0 the part of the DMRS index which is part of the uplink scheduling assignment0, 2, 3, 4, 6, 8, 9, 10
Transport block size UL-SCH 1 to 253440
Enhanced settings for PUCCH
n_PUCCHsets PUCCH indexrange depends on cell-specific settings
ACK/NACK pattern 0, 1
Number of CQI bits 1 to 13
Number of coded CQI bits 20
CQI pattern 0, 1
Enhanced settings for PUACH
Cyclic shift fieldfor DRS1 to 7
n(2)_DMRS,0sets for layer 0 the part of the DMRS index which is part of the uplink scheduling assignment0, 2, 3, 4, 6, 8, 9, 10
Transport block size UL-SCH 1 to 253440
Redundancy version index UL-SCH 0 to 3
Settings for PRACH
Power ramping settings  
   PRACH power ramping state on, off
   Transition time 0.0 to 30.0 µs in steps of 0.01 µs
Preamble formatset indirectly by PRACH configuration0
RB offsetsets the start resource block used for the PRACH Note: Can be set individually for each subframe that is allowed to carry a PRACH in line with the selected PRACH configuration.0 to total number of RBs – 1
N_cs configurationNote: Can be set individually for each subframe that is allowed to carry a PRACH in line with the selected PRACH configuration.0 to 15
Logical root sequence indexNote: Can be set individually for each subframe that is allowed to carry a PRACH in line with the selected PRACH configuration0 to 837
Sequence index (v)Note: Can be set individually for each subframe that is allowed to carry a PRACH in line with the selected PRACH configuration.0 to 63
Δtdelays the corresponding PRACH by Δt in µs Note: Can be set individually for each subframe that is allowed to carry a PRACH in line with the selected PRACH configuration.–500.00 µs to +500.00 µs in steps of 0.01 µs
Stateactivates the PRACH for the corresponding subframe Note: Can be set individually for each subframe that is allowed to carry a PRACH in line with the selected PRACH configuration.on, off
OneWeb User-Defined Signal Generation
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