SWRA670A April   2020  – October 2022 CC1350 , CC1352P , CC1352R , CC2400 , CC2420 , CC2430 , CC2500 , CC2520 , CC2530 , CC2538 , CC2540 , CC2541 , CC2543 , CC2544 , CC2545 , CC2564 , CC2590 , CC2591 , CC2592 , CC2620 , CC2630 , CC2640 , CC2650 , CC2652P , CC2652R , CC2652R7 , CC2652RSIP , CC3100 , CC3120 , CC3135 , CC3135MOD , CC3200 , CC3200MOD , CC3220MOD , CC3220MODA , CC3220R , CC3220S , CC3220SF , CC3230S , CC3230SF , CC3235MODAS , CC3235MODASF , CC3235MODS , CC3235MODSF , CC3235S , CC3235SF , WL1801MOD , WL1805MOD , WL1807MOD , WL1831

 

  1.   CE Regulations for SRDs Operating in License-Free 2.4 GHz/5 GHz Bands
  2.   Trademarks
  3. 1 Introduction
  4. 2 Regulation Overview
    1. 2.1 CEPT ERC Recommendation 70-03
  5. 3 Radio Equipment Directive (RED)
    1. 3.1 Essential Requirements
    2. 3.2 Obligations of Manufacturers
    3. 3.3 Conformity of Radio Equipment
      1. 3.3.1 Presumption of Conformity of Radio Equipment
      2. 3.3.2 Conformity Assessment Procedure
      3. 3.3.3 EU Declaration of Conformity
      4. 3.3.4 Rules and Conditions for Affixing the CE Marking
      5. 3.3.5 Technical Documentation
    4. 3.4 Restrictions on Putting into Service
  6. 4 ETSI EN 300 440
    1. 4.1 Technical Requirements
      1. 4.1.1 Environmental Profile
    2. 4.2 Transmitter Requirements
      1. 4.2.1 Transmitter Maximum Radiated Power (e.i.r.p.)
      2. 4.2.2 Permitted Range of Operating Frequencies
      3. 4.2.3 Unwanted Emissions in the Spurious Domain
      4. 4.2.4 Duty Cycle
      5. 4.2.5 Additional Requirements for FHSS Equipment
    3. 4.3 Receiver Requirements
      1. 4.3.1 Receiver Categories
      2. 4.3.2 Receiver Performance Criteria
      3. 4.3.3 Adjacent Channel Selectivity
      4. 4.3.4 Blocking or Desensitization
      5. 4.3.5 Spurious Radiations - Receiver
    4. 4.4 Spectrum Access Techniques
      1. 4.4.1 Listen Before Talk
        1. 4.4.1.1 LBT Timing Paramters
        2. 4.4.1.2 Receiver LBT Threshold and Transmitter Max On-Time
      2. 4.4.2 Detect And Avoid Technique (DAA)
  7. 5 ETSI EN 300 328
    1. 5.1 Technical Requirements
      1. 5.1.1 Environmental Profile
    2. 5.2 Equipment Types
      1. 5.2.1 Wideband Data Transmission Equipment Types
      2. 5.2.2 Adaptive and Non-Adaptive Equipment
      3. 5.2.3 Receiver Categories
      4. 5.2.4 Antenna Types
    3. 5.3 Conformance Requirements
      1. 5.3.1 Conformance Requirements for Frequency Hopping Equipment
        1. 5.3.1.1  RF Output Power
        2. 5.3.1.2  Duty Cycle
        3. 5.3.1.3  Accumulated Transit Time, Frequency Occupation and Hopping Sequence
        4. 5.3.1.4  Hopping Frequency Separation
        5. 5.3.1.5  Medium Utilization (MU) Factor
        6. 5.3.1.6  Adaptivity (Adaptive FHSS)
          1. 5.3.1.6.1 Adaptive FHSS Using LBT
          2. 5.3.1.6.2 Adaptive FHSS Using DAA
          3. 5.3.1.6.3 Adaptive FHSSS - Short Control Signaling Transmissions
        7. 5.3.1.7  Occupied Channel Bandwidth
        8. 5.3.1.8  Transmitter Unwanted Emissions in the Out-of-Band Domain
        9. 5.3.1.9  Transmitter Unwanted Emissions in the Spurious Domain
        10. 5.3.1.10 Receiver Spurious Emissions
        11. 5.3.1.11 Receiver Blocking
        12. 5.3.1.12 Geo-Location Capability
      2. 5.3.2 Conformance Requirements for Wideband Data Transmission Equipment (Non-FHSS)
        1. 5.3.2.1  RF Output Power
        2. 5.3.2.2  Power Spectral Density
        3. 5.3.2.3  Duty Cycle, Tx-sequence and Tx-gap
        4. 5.3.2.4  Medium Utilization Factor
        5. 5.3.2.5  Adaptivity (Non-FHSS)
          1. 5.3.2.5.1 Adaptive Non-FHSS using LBT
            1. 5.3.2.5.1.1 Frame Based Equipment
            2. 5.3.2.5.1.2 Load Based Equipment
          2. 5.3.2.5.2 Adaptive Non-FHSS Using DAA
          3. 5.3.2.5.3 Adaptive Non-FHSS - Short Control Signaling Transmissions
        6. 5.3.2.6  Occupied Channel Bandwidth
        7. 5.3.2.7  Transmitter Unwanted Emissions in the Out-of-Band Domain
        8. 5.3.2.8  74
        9. 5.3.2.9  Transmitter Unwanted Emissions in the Spurious Domain
        10. 5.3.2.10 Receiver Spurious Emissions
        11. 5.3.2.11 Receiving Blocking
        12. 5.3.2.12 Geo-Location Capability
  8. 6 ETSI EN 301 893
    1. 6.1 Technical Requirements
      1. 6.1.1 Environmental Profile
    2. 6.2 Conformance Requirements
      1. 6.2.1  Nominal Center Frequencies
      2. 6.2.2  Nominal Channel Bandwidth and Occupied Channel Bandwidth
      3. 6.2.3  RF Output Power, Transmit Power Control (TPC) and Power Density
      4. 6.2.4  Transmitter Unwanted Emissions - Outside the 5 GHz RLAN Bands
      5. 6.2.5  Transmitter Unwanted Emissions - Within 5 GHz RLAN Bands
      6. 6.2.6  Receiver Spurious Emissions
      7. 6.2.7  Dynamic Frequency Selection (DFS)
      8. 6.2.8  Adaptivity (Channel Access Mechanism)
        1. 6.2.8.1 Frame Based Equipment (FBE)
          1. 6.2.8.1.1 Initiating Device Channel Access Mechanism
          2. 6.2.8.1.2 Responding Device Channel Access Mechanism
        2. 6.2.8.2 Load Based Equipment (LBE)
          1. 6.2.8.2.1 Device Types - Load Based Equipment
          2. 6.2.8.2.2 Multi-Channel Operation - Load Based Equipment
          3. 6.2.8.2.3 Priority Classes - Load Based Equipment
          4. 6.2.8.2.4 ED Threshold Level - Load Based Equipment
          5. 6.2.8.2.5 Initiating Device Channel Access Mechanism - Load Based Equipment
          6. 6.2.8.2.6 Responding Device Channel Access Mechanism - Load Based Equipment
        3. 6.2.8.3 Short Control Signalling Transmissions (FBE and LBE)
      9. 6.2.9  Receiver Blocking
      10. 6.2.10 User Access Restrictions
      11. 6.2.11 Geo-Location Capability
  9. 7 ETSI EN 301 489
    1. 7.1 Technical Requirements
    2. 7.2 Environment Classification
    3. 7.3 Test Conditions
    4. 7.4 RF Exclusion Bands
    5. 7.5 Performance Assessment
      1. 7.5.1 Equipment Classification
    6. 7.6 Performance Criteria
      1. 7.6.1 Minimum Performance Level
    7. 7.7 Emission Requirements
      1. 7.7.1 Radiated Emissions - Enclosure Port
      2. 7.7.2 Conducted Emissions - DC Power Input/Output Ports
      3. 7.7.3 Conducted Emissions - AC Mains Power Input/Output Ports
      4. 7.7.4 Harmonic Current Emissions - AC Mains Power Input Port
      5. 7.7.5 Voltage Fluctuations and Flicker - AC Mains Power Input Port
      6. 7.7.6 Conducted Emissions - Wired Network Ports
    8. 7.8 Immunity Requirements
      1. 7.8.1 RF Electromagnetic Field (80 MHz to 6000 MHz) - Enclosure Port
      2. 7.8.2 Electrostatic Discharge - Enclosure
      3. 7.8.3 Fast Transients - Common Mode
      4. 7.8.4 RF - Common Mode
      5. 7.8.5 Transients and Surges in the Vehicular Environment
      6. 7.8.6 Voltage Dips and Interruptions
      7. 7.8.7 Surges
  10. 8 IEC 62368-1
    1. 8.1 Safety Requirements
  11. 9 EN 62311
    1. 9.1 Requirements and Limits of EN 62311
  12. 10References
  13. 11Revision History
6.2.8.1.1 Initiating Device Channel Access Mechanism

The Initiating Device (Frame Based Equipment) should implement a Channel Access Mechanism that complies with the following requirements:

  • The Fixed Frame Periods supported by the equipment should be declared by the manufacturer. This should be within the range of 1 ms to 10 ms. Transmissions can start only at the beginning of a Fixed Frame Period. An equipment may change its Fixed Frame Period but it should not do more than once every 200 ms.
  • Immediately before starting transmissions on an Operating Channel at the start of a Fixed Frame Period, the Initiating Device should perform a Clear Channel Assessment (CCA) check during a single Observation Slot. The Operating Channel should be considered occupied if the energy level in the channel exceeds the ED Threshold Level (TL) given in point 6) below. If the Initiating Device finds the Operating Channel(s) to be clear, it may transmit immediately. See Figure 3-1.

    If the Initiating Device finds an Operating Channel occupied, then there should be no transmissions on that channel during the next Fixed Frame Period. The Frame Based Equipment is allowed to continue Short Control Signalling Transmissions on this channel providing it complies with the requirements given in Section 6.2.8.3.

    For equipment having simultaneous transmissions on multiple (adjacent or non-adjacent) Operating Channels, the equipment is allowed to continue transmissions on other Operating Channels providing the CCA check did not detect any signals on those channels.

    The total time during which Frame Based Equipment can have transmissions on a given channel without re-evaluating the availability of that channel, is defined as the Channel Occupancy Time (COT).

    The equipment can have multiple transmissions within a Channel Occupancy Time without performing an additional CCA on this Operating Channel providing the gap between such transmissions does not exceed 16 μs.

    If the gap exceeds 16 μs, the equipment may continue transmissions provided that an additional CCA detects no RLAN transmissions with a level above the threshold defined in point 6. The additional CCA should be performed within the gap and within the observation slot immediately before transmission. All gaps are counted as part of the Channel Occupancy Time.
  • An Initiating Device is allowed to grant an authorization to one or more associated Responding Devices to transmit on the current Operating Channel within the current Channel Occupancy Time. A Responding Device that receives such a grant should follow the procedure described in Section 6.2.8.1.2.
  • The Channel Occupancy Time should not be greater than 95% of the Fixed Frame Period defined in point 1 and should be followed by an Idle Period until the start of the next Fixed Frame Period such that the Idle Period is at least 5% of the Channel Occupancy Time, with a minimum of 100 μs.
  • The equipment, upon correct reception of a packet which was intended for this equipment, can skip CCA and immediately proceed with the transmission of management and control frames (for example, ACK and Block ACK frames). A consecutive sequence of such transmissions by the equipment, without it performing a new CCA, should not exceed the Maximum Channel Occupancy Time as defined in point 4 above.
    For the purpose of multi-cast, the ACK transmissions (associated with the same data packet) of the individual devices are allowed to take place in a sequence.
  • The ED Threshold Level (TL), at the input of the receiver, should be proportional to the maximum transmit power (PH) according to the formula which assumes a 0 dBi receive antenna and PH to be specified in dBm e.i.r.p. The levels are shown in Table 6-16.
Table 6-16 Limits on ED Threshol Level - FBE
Maximum Tx Power (e.i.r.p.), dBm (PH)ED Threshold Level (TL) (1)Notes
For PH ≤ 13 dBm-75 dBm/MHzAssumes a 0 dBi receive antenna gain
For 13 dBm < PH < 23 dBm-85 dBm/MHz + (23 dBm - PH)
For PH ≥ 23 dBm-85 dBm/MHz
(1) Equipment should consider a channel to be occupied as long as other RLAN transmissions are detected at a level greater than the TL.