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TS 37.213
Physical Layer Procedures
for Shared Spectrum Channel Access

3GPP‑Page   ETSI‑search   fToC↓   Partial Content →
V19.0.0 (PDF)  2025/09  51 p.
V18.6.0  2025/06  51 p.
V17.8.0  2024/06  42 p.
V16.14.0  2024/06  32 p.
V15.3.0  2020/03  22 p.
Rapporteur:
Dr. Falahati, Sorour
Ericsson LM

full Table of Contents for  TS 37.213  Word version:  19.0.0

each clause number in 'red' refers to the equivalent title in the Partial Content
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1Scope  p. 6
2References  p. 6
3Definitions of terms, symbols and abbreviations  p. 6
3.1Terms  p. 6
3.2Symbols  p. 7
3.3Abbreviations  p. 7
4Channel access procedure  p. 7
4.0General |R16|  p. 7
4.1Downlink channel access procedures  p. 8
4.1.1Type 1 DL channel access procedures  p. 8
4.1.1.1Regional limitations on channel occupancy time |R16|  p. 9
4.1.2Type 2 DL channel access procedures  p. 9
4.1.2.1Type 2A DL channel access procedures |R16|  p. 10
4.1.2.2Type 2B DL channel access procedures |R16|  p. 10
4.1.2.3Type 2C DL channel access procedures |R16|  p. 10
4.1.3DL channel access procedures in a shared channel occupancy  p. 10
4.1.4Contention window adjustment procedures  p. 11
4.1.4.1Contention window adjustment procedures for transmissions by eNB |R16|  p. 11
4.1.4.2Contention window adjustment procedures for DL transmissions by gNB |R16|  p. 12
4.1.4.3Common procedures for CWS adjustments for DL transmissions |R16|  p. 13
4.1.5Energy detection threshold adaptation procedures  p. 13
4.1.6Channel access procedures for transmission(s) on multiple channels  p. 14
4.1.6.1Type A multi-channel access procedures  p. 14
4.1.6.1.1Type A1 multi-channel access procedures  p. 14
4.1.6.1.2Type A2 multi-channel access procedures  p. 14
4.1.6.2Type B multi-channel access procedure  p. 15
4.1.6.2.1Type B1 multi-channel access procedure  p. 15
4.1.6.2.2Type B2 multi-channel access procedure  p. 15
4.2Uplink channel access procedures  p. 16
4.2.1Channel access procedures for uplink transmission(s)  p. 16
4.2.1.0Channel access procedures and UL related signaling |R16|  p. 17
4.2.1.0.0Channel access procedures upon detection of a common DCI  p. 17
4.2.1.0.1Channel access procedures for consecutive UL transmission(s)  p. 18
4.2.1.0.2Conditions for maintaining Type 1 UL channel access procedures  p. 20
4.2.1.0.3Conditions for indicating Type 2 channel access procedures  p. 20
4.2.1.0.4Channel access procedures for UL multi-channel transmission(s)  p. 21
4.2.1.1Type 1 UL channel access procedure  p. 21
4.2.1.2Type 2 UL channel access procedure  p. 22
4.2.1.2.1Type 2A UL channel access procedure |R16|  p. 22
4.2.1.2.2Type 2B UL channel access procedure |R16|  p. 22
4.2.1.2.3Type 2C UL channel access procedure |R16|  p. 22
4.2.2Contention window adjustment procedures  p. 22
4.2.2.1Contention window adjustment procedures for UL transmissions scheduled/configured by eNB |R16|  p. 23
4.2.2.2Contention window adjustment procedures for UL transmissions scheduled/configured by gNB |R16|  p. 24
4.2.2.3Common procedures for CWS adjustments for UL transmissions |R16|  p. 25
4.2.3Energy detection threshold adaptation procedure  p. 25
4.2.3.1Default maximum energy detection threshold computation procedure  p. 26
4.3Channel access procedures for semi-static channel occupancy |R16|  p. 26
4.3.1Channel access procedures to initiate a channel occupancy |R17|  p. 27
4.3.1.1Channel occupancy initiated only by gNB  p. 27
4.3.1.2Channel occupancy initiated by gNB or UE  p. 28
4.3.1.2.1Channel occupancy initiated by gNB and sensing procedures  p. 28
4.3.1.2.2Channel occupancy initiated by UE and sensing procedures  p. 28
4.3.1.2.3Association with initiated channel occupancy for configured UL transmissions  p. 29
4.3.1.2.4Association with initiated channel occupancy for scheduled UL transmissions  p. 30
4.3.1.2.4.1Intra-period scheduled UL transmissions  p. 30
4.3.1.2.4.2Cross-period scheduled UL transmissions  p. 31
4.3.2Channel access related procedures for UL transmissions |R17|  p. 32
4.3.3Channel access procedures for transmission(s) on multiple channels |R17|  p. 33
4.4Channel access procedures for frequency range 2-2 |R17|  p. 33
4.4.1Type 1 channel access procedures  p. 34
4.4.2Type 2 channel access procedures  p. 35
4.4.3Type 3 channel access procedures  p. 35
4.4.4Channel access procedures in an initiated channel occupancy  p. 35
4.4.5Exempted transmissions from sensing  p. 36
4.4.6Channel access procedures for transmission(s) on multiple channels or beams  p. 36
4.4.7Energy detection threshold adaptation procedures  p. 37
4.5Sidelink channel access procedures |R18|  p. 37
4.5.1Type 1 SL channel access procedure  p. 38
4.5.2Type 2 SL channel access procedure  p. 39
4.5.2.1Type 2A SL channel access procedure  p. 39
4.5.2.2Type 2B SL channel access procedure  p. 39
4.5.2.3Type 2C SL channel access procedure  p. 40
4.5.3SL channel access procedures in a shared channel occupancy  p. 40
4.5.4Contention window adjustment procedures for SL transmissions  p. 41
4.5.5Energy detection threshold adaptation procedure  p. 42
4.5.5.1Default maximum energy detection threshold computation procedure  p. 43
4.5.6Channel access procedures for transmission(s) on multiple channels  p. 44
4.5.6.1Type A multi-channel access procedures for PSFCH or S-SSB transmissions  p. 44
4.5.6.1.1Type A1 multi-channel access procedures  p. 44
4.5.6.1.2Type A2 multi-channel access procedures  p. 44
4.5.6.2Type B multi-channel access procedures for PSFCH or S-SSB transmissions  p. 44
4.5.6.2.1Type B1 multi-channel access procedure  p. 45
4.5.6.2.2Type B2 multi-channel access procedure  p. 45
4.5.6.3Multi-channel access procedures for SL transmissions  p. 45
$Change history  p. 47

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