WO2023277777A1 - Transmission en liaison montante avec saut semi-statique - Google Patents

Transmission en liaison montante avec saut semi-statique Download PDF

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Publication number
WO2023277777A1
WO2023277777A1 PCT/SE2022/050653 SE2022050653W WO2023277777A1 WO 2023277777 A1 WO2023277777 A1 WO 2023277777A1 SE 2022050653 W SE2022050653 W SE 2022050653W WO 2023277777 A1 WO2023277777 A1 WO 2023277777A1
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WIPO (PCT)
Prior art keywords
uplink transmission
mac
skipping
disabling
enabling
Prior art date
Application number
PCT/SE2022/050653
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English (en)
Inventor
Rongyan Lin
Ying Sun
Zhenhua Zou
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
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 (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Priority to EP22738088.8A priority Critical patent/EP4364504A1/fr
Publication of WO2023277777A1 publication Critical patent/WO2023277777A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling

Definitions

  • [001] Disclosed are embodiments related to controlling (e.g., enabling or disabling) skipping uplink transmission.
  • New Radio (NR) (a.k.a., 5G or Next Generation (NG)) architecture may include one or more of a user equipment (UE) and a network node (e.g., an NG NodeB (gNB)).
  • UE user equipment
  • gNB NG NodeB
  • a user equipment (UE) is any device (e.g., smartphone, computer, tablet, sensor, appliance, vehicle, etc.) capable of wireless communication with another device (e.g., another UE or an access point, such as a base station).
  • the network node may be a 5G node.
  • NR supports skipping uplink transmission when the UE buffer is empty.
  • RRC Radio Resource Control
  • whether the UE can skip uplink transmission on dynamic grant is configured via Radio Resource Control (RRC) signal (i.e., skipUplinkTxDynamic), and the RRC signal applies for a cell group (i.e., per Medium Access Control (MAC) entity).
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • uplink transmission skipping is mandatorily supported and turned-on by default. That is, there is no need for a separate RRC configuration parameter.
  • this document refers to an RRC parameter skipUplinkTxConfigured that is always configured with value true.
  • NRRel-16 introduced two enhanced versions of uplink skipping (i.e., enhancedSkipUplinkTxDynamic and enhancedSkipUplinkTxConfigured).
  • the enhanced versions can be separately configured by RRC, one for dynamic grant and another one for configured grant.
  • the UE cannot skip the uplink transmission if there is Uplink Control Information (UCI) to be multiplexed on the physical uplink shared channel (PUSCH).
  • UCI Uplink Control Information
  • PUSCH physical uplink shared channel
  • HARQ is an acronym for hybrid automatic repeat request
  • C-RNTI is an acronym for a cell radio network temporary identifier
  • SDU is an acronym for a service data unit
  • CSI is an acronym for channel state information
  • PDU is an acronym for protocol data unit
  • BSR is an acronym for buffer status report
  • LCG is an acronym for logical channel group.
  • the MAC entity shall:
  • the MAC PDU includes only the periodic BSR and there is no data available for any LCG, or the MAC PDU includes only the padding BSR:
  • the MAC PDU includes only the periodic BSR and there is no data available for any LCG, or the MAC PDU includes only the padding BSR:
  • the IE MAC-CellGroupConfig is used to configure MAC parameters for a cell group, including DRX.
  • MAC-CellGroupConfig SEQUENCE ⁇ drx-Config SetupRelease ⁇ DRX-Config ⁇ OPTIONAL
  • OPTIONAL Need R schedulingRequestID-LBT-SCell-rl 6 SchedulingRequestld OPTIONAL, — Need R lch-BasedPrioritization-rl6 ENUMERATED ⁇ enabled ⁇
  • OPTIONAL Need R schedulingRequestID-BFR-SCell-rl 6 SchedulingRequestld OPTIONAL, — Need R drx-ConfigSecondaryGroup-rl6 SetupRelease ⁇ DRX-ConfigSecondaryGroup ⁇ OPTIONAL - Need M
  • Datalnactivity Timer ENUMERATED ⁇ si, s2, s3, s5, s7, slO, si 5, s20, s40, s50, s60, s80, slOO, si 20, sl50, sl80 ⁇
  • Rel-16 PUSCH skipping including both enhancedSkipUplinkTxDynamic-rl 6 and enhancedSkipUplinkTxConfigured-rl 6
  • PUSCH repetitions including both type A and type B
  • the skipping uplink transmission is intended for user equipment (UE) battery saving when there are no data in UE buffer, hence it is conducted by UE directly without network control.
  • network should control the UE behavior to avoid ambiguity (e.g., in discontinuous transmission (DTX) detection).
  • DTX discontinuous transmission
  • two error cases might happen: a false positive/alarm and a false negative.
  • the false positive/alarm may occur when the UE skips the transmission (e.g., DTX) but the network node (e.g., gNB) detects uplink (UL) transmission.
  • the false negative may occur when the UE transmits in the UL but the network node does not detect the UL transmission (e.g., false DTX).
  • the network node may not be able to differentiate the following three cases, in particular in the low signal-to- noise and interference ratio (SINR) case: (1) the UE has decoded the scheduling dynamic grant, but the UE does not have data in the buffer; (2) the UE has mis-detected the scheduling dynamic grant, and the UE does not transmit anything in the Uplink; and (3) the UE has decoded the scheduling dynamic grant, the UE transmits something in the Uplink, but the network node does not detect any transmission due to the SINR in demodulation reference signal (DMRS) sequence detection.
  • SINR demodulation reference signal
  • the network node If the UE has data to transmit but the UE does not correctly receive the physical downlink control channel (PDCCH), and the network node thinks the UE skipped that uplink transmission because the UE does not have data, the network node will not perform retransmission (e.g., the network node is confused with the above cases 1 and 2). More dangerously, if the UE has transmitted, but the network node mis-detects the PUSCH transmission and thinks UE has skipped uplink transmission, the network node will not perform retransmission (e.g., the network node is confused with the above cases 1 and 3), and the transmitted uplink transport block (TB) will be lost.
  • PDCCH physical downlink control channel
  • the network node may not be able to differentiate the following two casesL (1) the UE does not have data in the buffer, and the UE does not transmit anything in the Uplink (e.g., actual DTX); and (2) the UE transmits something in the Uplink, but the network node does not detect any transmission due to the low SINR in DMRS sequence detection.
  • the difference is that the configured grant is pre configured, and the grant itself would not be mis-detected by the UE.
  • the case (2) above for dynamic grant does not exist for configured grant.
  • an RRC signal switches on/off uplink skipping transmission.
  • the RRC reconfiguration typically takes time from 20 milliseconds up to 100 milliseconds, and the RRC signal could encounter transmission failure (especially in bad radio channel condition) and lead to UE radio link failure (RLF) and release eventually.
  • RLF radio link failure
  • the network can only turn-off the Rel-16 version of uplink skipping by setting enhancedSkipUplinkTxConfigured with value false. Rel-15 skipping uplink is always enabled, and there are no ways for the network to control the functionality on and off.
  • the network node e.g., gNB
  • the network node e.g., gNB
  • aspects of the invention may provide a set of new Medium Access Control (MAC) Control Elements (CEs) (e.g., skipUplinkTxSemi-Static) for control of skipping uplink transmission.
  • the MAC CEs may enable/disable skip uplink transmission.
  • the MAC CEs may control (e.g., turn on or turn off) different versions of skip uplink transmissions (e.g., dynamic grant, configured grant, and/or whether Uplink Control Information (UCI) is or is not considered).
  • the enable/disable by the MAC CE may interact with the Radio Resource Control (RRC) configuration.
  • RRC Radio Resource Control
  • Aspects of the invention may relate to a network implementation to decide when and how to use the MAC CEs (e.g., depending on channel quality).
  • aspects of the invention may overcome one or more of the problems with the existing solutions by providing the advantage of ensuring the functionally of skipping uplink transmission under control of a network node (e.g., gNB).
  • a network node may easily and dynamically control skipping uplink transmission via an MAC CE.
  • Some aspects of the invention may additionally or alternatively provide the advantage of allowing a network node to flexibly enable or disable skipping uplink transmission with dynamic grant, configured grant, with/without repetition, and/or with/without uplink carrier aggregation (CA).
  • CA uplink carrier aggregation
  • One aspect of the invention may provide a method performed by a network node (104) (e.g., gNB, eNB, base station, or access node).
  • the method may include determining to control skipping uplink transmission for a user equipment (UE).
  • the method may include, if skipping uplink transmission for the UE is determined to be controlled, sending a medium access control (MAC) control element (CE) to control skipping uplink transmission for the UE.
  • MAC medium access control
  • CE control element
  • determining to control skipping uplink transmission for the UE may include determining a signal-to-noise and interference ratio (SINR). In some aspects, determining the SINR may include using a measured channel quality in uplink and/or a measured channel quality in downlink. In some aspects, determining to control skipping uplink transmission for the UE may include determining that the SINR is low and, if the SINR is determined to be low, determining to disable skipping uplink transmission for the UE.
  • SINR signal-to-noise and interference ratio
  • determining to control skipping uplink transmission for the UE may include determining that a measured channel quality in uplink plus hysteresis is less than an uplink channel quality threshold and, if the measured channel quality in uplink plus hysteresis is determined to be less than the uplink channel quality threshold, determining to disable skipping uplink transmission for the UE.
  • the uplink channel quality threshold may be a threshold of channel quality of physical uplink shared channel (PUSCH), a threshold of channel quality of PUSCH with repetition, or a maximum value of the threshold of channel quality of PUSCH and the threshold of channel quality of PUSCH with repetition.
  • determining to control skipping uplink transmission for the UE may include determining that the measured channel quality in downlink plus hysteresis is less than a downlink channel quality threshold and, if the measured channel quality in downlink plus hysteresis is determined to be less than the downlink channel quality threshold, determining to disable skipping uplink transmission for the UE.
  • the downlink channel quality threshold may be a threshold of channel quality of physical downlink control channel (PDCCH).
  • determining to control skipping uplink transmission for the UE may include determining that a measured channel quality in uplink minus hysteresis is greater than an uplink channel quality threshold and/or determining that the measured channel quality in downlink minus hysteresis is greater than a downlink channel quality threshold. In some aspects, determining to control skipping uplink transmission for the UE may include, if the measured channel quality in uplink minus hysteresis is determined to be greater than the uplink channel quality threshold and/or the measured channel quality in downlink minus hysteresis is determined to be greater than a downlink channel quality threshold, determining to enable skipping uplink transmission for the UE.
  • the method may further include configuring or reconfiguring the UE via Radio Resource Control (RRC), and configuring or reconfiguring the UE via RRC may include activating or deactivating skipping uplink transmission for the UE.
  • RRC Radio Resource Control
  • the MAC CE may have a logical channel identifier (LCID) value (e.g., 46 or 47) or an extended LCID (eLCID) that indicates that the MAC CE is for controlling skipping uplink transmission.
  • the MAC CE may have a logical channel identifier (LCID) value (e.g., 46 or 47) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission.
  • the MAC CE may include an enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for the UE.
  • the MAC CE may include a bit map, and each bit of the bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for a serving cell for the UE.
  • the MAC CE may include an identification (ID) of a serving cell of the UE and an enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for the serving cell of the UE.
  • ID identification
  • enable/disable indicator e.g., one bit
  • determining to control skipping uplink transmission for the UE may include determining to control skipping uplink transmission for one or both of configured grant and dynamic grant; the MAC CE may include a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant; and the MAC CE may include a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant.
  • the MAC CE may include a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant.
  • determining to control skipping uplink transmission for the UE may include determining to control skipping uplink transmission in one of configured grant and dynamic grant; and the MAC CE may have a logical channel identifier (LCID) value that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission in the one of configured grant and dynamic grant.
  • LCID logical channel identifier
  • the MAC CE may include a configured grant bit map and a dynamic grant bit map, each bit of the configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for a serving cell for the UE, and each bit of the dynamic grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for a serving cell for the UE.
  • the MAC CE may include: an identification (ID) of a serving cell of the UE; a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for the serving cell of the UE; and a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for the serving cell of the UE.
  • the MAC CE may additionally include an indicator on whether to check whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission.
  • UCI uplink control information
  • the MAC CE may include: a first configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission; a first dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission; a second configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission; and a second dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission
  • the MAC CE may have a logical channel identifier (LCID) value that indicates that the MAC CE is for one of (i) enabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission, (ii) disabling skipping uplink transmission for configured grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iii) enabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iv) disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (v) enabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission, (vi) disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplex.
  • LCID
  • the MAC CE may include a first configured grant bit map, a first dynamic grant bit map, a second configured grant bit map, and a second dynamic grant bit map; each bit of the first configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for a serving cell for the UE; each bit of the first dynamic grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE; each bit of the second configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE; and each bit of the second dynamic grant bit map
  • the MAC CE may include: an identification (ID) of a serving cell of the UE; a first configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for the serving cell of the UE; a first dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for the serving cell of the UE; a second configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission for the serving cell
  • determining to control skipping uplink transmission for the UE may include determining to disable skipping uplink transmission for the UE, the MAC CE to control skipping uplink transmission for the UE may be a first MAC CE to disable skipping uplink transmission for the UE.
  • the method may further include determining to enable skipping uplink transmission for the UE.
  • the method may further include, if skipping uplink transmission for the UE is determined to be enabled, sending a second MAC CE to enable skipping uplink transmission for the UE.
  • the first and second MAC CEs may have the same logical channel identifier (LCID) value (e.g., 46).
  • the first and second MAC CEs may have different logical channel identifier (LCID) values (e.g., 47 and 46, respectively).
  • LCID logical channel identifier
  • determining to enable skipping uplink transmission for the UE may include determining that a signal-to-noise and interference ratio (SINR) is not low.
  • SINR signal-to-noise and interference ratio
  • determining to enable skipping uplink transmission for the UE may include: determining that a measured channel quality in uplink minus hysteresis is greater than an uplink channel quality threshold; and/or determining that the measured channel quality in downlink minus hysteresis is greater than a downlink channel quality threshold.
  • Another aspect of the invention may provide a network node (e.g., gNB, eNB, base station, or access node).
  • the network node may be adapted to determine to control skipping uplink transmission for a user equipment (UE).
  • the network node may be adapted to, if skipping uplink transmission for the UE is determined to be controlled, send a medium access control (MAC) control element (CE) to control skipping uplink transmission for the UE.
  • MAC medium access control
  • CE control element
  • Still another aspect of the invention may provide a method performed by a user equipment (UE).
  • the method may include receiving a medium access control (MAC) control element (CE).
  • the method may include determining that the MAC CE is for controlling skipping uplink transmission.
  • the method may include, if the received MAC CE is determined to be for controlling skipping uplink transmission, enabling or disabling skipping uplink transmission.
  • MAC medium access control
  • the method may further include determining an uplink grant; determining that a buffer of the UE does not have data to transmit; if an uplink grant is determined, the buffer of the UE is determined to not have data to transmit, and skipping uplink transmission is enabled, skipping uplink transmission; and, if an uplink grant is determined, the buffer of the UE is determined to not have data to transmit, and skipping uplink transmission is disabled, transmitting dummy data.
  • the method may further include: determining an uplink grant; determining that a buffer of the UE has data to transmit; and, if an uplink grant is determined and the buffer of the UE is determined to have data to transmit, transmitting the data.
  • the method may further include determining an uplink grant; determining that a buffer of the UE does not have data to transmit; determining that uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission; and, if an uplink grant is determined, the buffer of the UE is determined to not have data to transmit, skipping uplink transmission is enabled, and UCI is determined to be multiplexed on a PUSCH transmission, transmitting dummy data.
  • UCI uplink control information
  • the method may further include configuring or reconfiguring the UE via Radio Resource Control (RRC).
  • RRC Radio Resource Control
  • configuring or reconfiguring the UE via RRC may include activating or deactivating skipping uplink transmission for the UE.
  • determining that the MAC CE is for controlling skipping uplink transmission may include determining that the MAC CE has a logical channel identifier (LCID) value (e.g., 46 or 47) or an extended LCID (eLCID) that indicates that the MAC CE is for controlling skipping uplink transmission.
  • determining that the MAC CE is for controlling skipping uplink transmission may include determining that the MAC CE has a logical channel identifier (LCID) value (e.g., 46 or 47) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission.
  • LCID logical channel identifier
  • the method may include, if the LCID value indicates that the MAC CE is for enabling skipping uplink transmission, enabling skipping uplink transmission. In some aspects, the method may include, if the LCID value indicates that the MAC CE is for disabling skipping uplink transmission, disabling skipping uplink transmission.
  • the MAC CE may include an enable/disable indicator (e.g., one bit) having a value that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission.
  • the method may include, if the enable/disable indicator has a value that indicates that the MAC CE is for enabling skipping uplink transmission, enabling skipping uplink transmission.
  • the method may include, if the enable/disable indicator has a value that indicates that the MAC CE is for disabling skipping uplink transmission, disabling skipping uplink transmission.
  • determining that the MAC CE is for controlling skipping uplink transmission may include determining that the MAC CE is for controlling skipping uplink transmission for one or more serving cells for the UE, and enabling or disabling skipping uplink transmission may include enabling or disabling skipping uplink transmission for the one or more serving cells for the UE.
  • the MAC CE may include a bit map, and each bit of the bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for a serving cell for the UE.
  • the MAC CE may include an identification (ID) of a serving cell of the UE and an enable/disable indicator (e.g., one bit) of the MAC CE has a value that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for the serving cell of the UE.
  • ID an identification
  • enable/disable indicator e.g., one bit
  • determining that the MAC CE is for controlling skipping uplink transmission may include determining that the MAC CE is for controlling skipping uplink transmission for one or both of configured grant and dynamic grant, and enabling or disabling skipping uplink transmission may include enabling or disabling skipping uplink transmission for the one or both of configured grant and dynamic grant.
  • the MAC CE may include a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant; the MAC CE may include a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant; and enabling or disabling skipping uplink transmission may include enabling or disabling skipping uplink transmission for configured grant based on a value of the configured grant enable/disable indicator and enabling or disabling skipping uplink transmission for dynamic grant based on a value of the dynamic grant enable/disable indicator.
  • a configured grant enable/disable indicator e.g., one bit
  • the MAC CE may include a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant
  • determining that the MAC CE is for controlling skipping uplink transmission may include determining that a value of a logical channel identifier (LCID) of the MAC CE indicates whether the MAC CE is for (i) enabling skipping uplink transmission for configured grant, (ii) disabling skipping uplink transmission for configured grant, (iii) enabling skipping uplink transmission for dynamic grant, and (iv) disabling skipping uplink transmission for dynamic grant.
  • the method may include, based on the value of the LCID, enabling or disabling skipping uplink transmission for one of configured grant and dynamic grant.
  • the MAC CE may include a configured grant bit map and a dynamic grant bit map; each bit of the configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for a serving cell for the UE; each bit of the dynamic grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for a serving cell for the UE; and enabling or disabling skipping uplink transmission may include enabling or disabling skipping uplink transmission for configured grant and/or dynamic grant for one or more serving cells for the UE based on the configured grant and dynamic grant bit maps.
  • the MAC CE may include: an identification (ID) of a serving cell of the UE; a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for the serving cell of the UE; and a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for the serving cell of the UE.
  • ID identification
  • a configured grant enable/disable indicator e.g., one bit
  • a dynamic grant enable/disable indicator e.g., one bit
  • the MAC CE may include: a first configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission; a first dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission; a second configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission; and a second dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission
  • the MAC CE may have a logical channel identifier (LCID) value that indicates that the MAC CE is for one of (i) enabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission, (ii) disabling skipping uplink transmission for configured grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iii) enabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iv) disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (v) enabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission, (vi) disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplex.
  • LCID
  • the MAC CE may include a first configured grant bit map, a first dynamic grant bit map, a second configured grant bit map, and a second dynamic grant bit map; each bit of the first configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for a serving cell for the UE; each bit of the first dynamic grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE; each bit of the second configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE; and each bit of the second dynamic grant bit map
  • the MAC CE may include: an identification (ID) of a serving cell of the UE; a first configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for the serving cell of the UE; a first dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for the serving cell of the UE; a second configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission for the serving cell
  • enabling or disabling skipping uplink transmission if the received MAC CE is determined to be for controlling skipping uplink transmission may include, in accordance with the MAC CE, enabling or disabling one or more of (i) skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission, (ii) skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iii) skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission, and (iv) skipping uplink transmission for dynamic grant with a check on whether UCI is to be multiplexed on a PUSCH transmission.
  • UCI uplink control information
  • PUSCH physical uplink shared channel
  • enabling or disabling skipping uplink transmission if the received MAC CE is determined to be for controlling skipping uplink transmission does not comprise: enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission if skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission was not previously enabled via radio resource control (RRC); enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission if skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission was not previously enabled via RRC; and/or enabling or disabling skipping uplink transmission for dynamic grant with a check on whether UCI is to be multiplexed on a PUSCH transmission if skipping uplink transmission for dynamic grant with a check on whether UCI is to be multiplexed on a PU
  • the MAC CE may be a first MAC CE for disabling skipping uplink transmission, and the method may further include: receiving a second MAC CE; determining that the second MAC CE is for enabling skipping uplink transmission; and, if the second MAC CE is determined to be for enabling skipping uplink transmission, enabling skipping uplink transmission.
  • the first and second MAC CEs may have the same logical channel identifier (LCID) value (e.g., 46).
  • the first and second MAC CEs have different logical channel identifier (LCID) values (e.g., 47 and 46, respectively).
  • Yet another aspect of the invention may provide a user equipment (UE).
  • the UE may be adapted to receive a medium access control (MAC) control element (CE).
  • the UE may be adapted to determine that the MAC CE is for controlling skipping uplink transmission.
  • the UE may be adapted to, if the received MAC CE is determined to be for controlling skipping uplink transmission, enable or disable skipping uplink transmission.
  • MAC medium access control
  • CE medium access control element
  • Still another aspect of the invention may provide a computer program including instructions for adapting an apparatus to perform any of the methods set forth above.
  • Yet another aspect of the invention may provide a carrier containing the computer program, and the carrier may be one of an electronic signal, optical signal, radio signal, or compute readable storage medium.
  • Still another aspect of the invention may provide an apparatus including processing circuitry and a memory.
  • the memory containing instructions executable by the processing circuitry, whereby the apparatus is operative to perform any of the methods set forth above.
  • Yet another aspect of the invention may provide an apparatus adapted to any of the methods set forth above.
  • Still another aspect of the invention may provide any combination of the aspects set forth above.
  • FIG. 1 is a message flow diagram illustrating steps of a process performed by a user equipment and a network node according to some aspects.
  • FIG. 2 is a message flow diagram illustrating steps of a process performed by a user equipment and a network node according to some aspects.
  • FIG. 3 is a message flow diagram illustrating steps of a process performed by a user equipment and a network node according to some aspects.
  • FIG. 4 is a message flow diagram illustrating steps of a process performed by a user equipment and a network node according to some aspects.
  • FIG. 5 illustrates a cell edge with bad radio frequency condition according to some aspects.
  • FIG. 6 illustrates the contents of a Medium Access Control (MAC) Control Elements (CE) for control of skipping uplink transmission according to some aspects.
  • MAC Medium Access Control
  • CE Control Elements
  • FIG. 7 illustrates the contents of a MAC CE for control of skipping uplink transmission according to some aspects.
  • FIG. 8 illustrates the contents of a MAC CE for control of skipping uplink transmission according to some aspects.
  • FIG. 9 illustrates the contents of a MAC CE for control of skipping uplink transmission according to some aspects.
  • FIG. 10 illustrates the contents of a MAC CE for control of skipping uplink transmission according to some aspects.
  • FIG. 11 illustrates the contents of a MAC CE for control of skipping uplink transmission according to some aspects.
  • FIG. 12 is a flowchart illustrating a process according to some aspects.
  • FIG. 13 is a flowchart illustrating a process according to some aspects.
  • FIG. 14 illustrates a UE according to some aspects.
  • FIG. 15 illustrates a network node according to some aspects.
  • node can be a network node or a user equipment (UE).
  • network nodes include, but are not limited to, a NodeB, a base station (BS), a multi standard radio (MSR) radio node such as a MSR BS, an eNodeB, a gNodeB, a Master eNB (MeNB), a Secondary eNB (SeNB), integrated access backhaul (IAB) node, network controller, radio network controller (RNC), base station controller (BSC), relay, donor node controlling relay, base transceiver station (BTS), Central Unit (e.g. in a gNB), Distributed Unit (e.g.
  • MSR multi standard radio
  • gNB Baseband Unit
  • Centralized Baseband C-RAN
  • AP access point
  • RRU remote radio unit
  • RRH remote radio head
  • DAS distributed antenna system
  • core network node e.g. MSC, MME, etc.
  • O&M core network node
  • OSS e.g. SON
  • positioning node e.g. E-SMLC
  • the term “user equipment” or “UE” is a non-limiting term that refers to any type of wireless device communicating with a network node and/or with another UE in a cellular or mobile communication system.
  • UEs include, but are not limited to, a target device, a device to device (D2D) UE, a vehicular to vehicular (V2V), a machine type UE, an machine type communication (MTC) UE, a UE capable of machine to machine (M2M) communication, a PDA, a Tablet, a mobile terminal(s), a smart phone, laptop embedded equipment (LEE), laptop mounted equipment (LME), and USB dongles.
  • D2D device to device
  • V2V vehicular to vehicular
  • MTC machine type communication
  • M2M machine to machine
  • PDA tablet
  • Tablet a mobile terminal(s)
  • smart phone laptop embedded equipment
  • LME laptop mounted equipment
  • USB dongles USB dongles.
  • radio network node is generic terminology that refers to any kind of network node including but not limited to a base station, a radio base station, a base transceiver station, a base station controller, a network controller, an evolved Node B (eNB), a Node B, a gNodeB (gNB), a relay node, an access point (AP), a radio access point, a Remote Radio Unit (RRU), a Remote Radio Head (RRH), a Central Unit (e.g. in a gNB), a Distributed Unit (e.g. in a gNB), a Baseband Unit, a Centralized Baseband, and a C-RAN.
  • eNB evolved Node B
  • gNB gNodeB
  • AP access point
  • RRU Remote Radio Unit
  • RRH Remote Radio Head
  • Central Unit e.g. in a gNB
  • Distributed Unit e.g. in a gNB
  • Baseband Unit e.g. in a g
  • radio access technology may refer to any RAT including, for example and without limitation, UTRA, E-UTRA, narrow band internet of things (NB-IoT), WiFi, Bluetooth, next generation RAT, New Radio (NR), 4G, and 5G.
  • RAT radio access technology
  • Any of the equipment denoted by the terms “node,” “network node,” or “radio network node” may be capable of supporting a single or multiple RATs.
  • FIG. 1 is a message flow diagram illustrating steps of a process 100 performed by a user equipment (UE) 102 and a network node 104 (e.g., gNB, eNB, base station, or access node) according to some aspects.
  • the UE 102 may be a medium access control (MAC) entity.
  • MAC medium access control
  • the UE 102 may be configured or reconfigured with skipping uplink transmission for dynamic grant enabled (e.g., skipUplinkTxDynamic may be configured with the value true). In some aspects, the UE 102 may be be configured or reconfigured with skipping uplink transmission for dynamic grant enabled via Radio Resource Control (RRC).
  • RRC Radio Resource Control
  • the process 100 may include a step 112 in which the network node 104 decides to disable skipping uplink transmission.
  • the step 112 may include the network node 104 sending a MAC control element (CE) (e.g., skipUplinkTxSemi-Static) to disable skipping uplink transmission for the UE 102 (at least for dynamic grant).
  • CE MAC control element
  • the UE 102 may receive the MAC CE sent by the network node 104. In some aspects, as shown in FIG. 1, the UE 102 may send an acknowledgment message (e.g., HARQ ACK and/or HARQ-NACK) indicating receipt of the MAC CE.
  • an acknowledgment message e.g., HARQ ACK and/or HARQ-NACK
  • the process 100 may include a step 114 in which the UE 102 determines that the MAC CE is for disabling skipping uplink transmission.
  • the step 114 may include, if the UE 102 determines that the received MAC CE is for disabling skipping uplink transmission, disabling skipping uplink transmission (e.g., at least for dynamic grant).
  • FIG. 2 is a message flow diagram illustrating steps of a process 200 performed by a user equipment (UE) 102 and a network node 104 (e.g., gNB, eNB, base station, or access node) according to some aspects.
  • the UE 102 may be a MAC entity.
  • the process 200 may include a step 208 in which the network node 104 decides to configure (or reconfigure) the UE 102 and enable skipping uplink transmission for dynamic grant.
  • the step 208 may include the network node 104 configuring or reconfiguring the UE 102 with skipping uplink transmission for dynamic grant enabled via RRC (e.g., skipUplinkTxDynamic may be configured with the value true).
  • the process 200 may include a step 210 in which the network node 104 enables uplink transmission for dynamic grant.
  • the process 200 may include a step 212 in which the network node 104 decides to disable skipping uplink transmission.
  • the step 212 may include the network node 104 sending a MAC CE (e.g., skipUplinkTxSemi-Static) to disable skipping uplink transmission for the UE 102 (e.g., at least for dynamic grant).
  • a MAC CE e.g., skipUplinkTxSemi-Static
  • the UE 102 may receive the MAC CE sent by the network node 104. In some aspects, as shown in FIG. 2, the UE 102 may send an acknowledgment message (e.g., HARQ-AN) indicating receipt of the MAC CE.
  • an acknowledgment message e.g., HARQ-AN
  • the process 200 may include a step 214 in which the UE 102 determines that the MAC CE is for disabling skipping uplink transmission.
  • the step 214 may include, if the UE 102 determines that the received MAC CE is for disabling skipping uplink transmission, disabling skipping uplink transmission (at least for dynamic grant).
  • the process 200 may include a step 216 in which the network node 104 decides to enable skipping uplink transmission (e.g., at least for dynamic grant).
  • the step 216 may include the network node 104 sending a second MAC CE (e.g., skipUplinkTxSemi-Static) to enable skipping uplink transmission for the UE 102 (e.g., at least for dynamic grant).
  • a second MAC CE e.g., skipUplinkTxSemi-Static
  • the UE 102 may receive the second MAC CE sent by the network node 104. In some aspects, as shown in FIG. 2, the UE 102 may send an acknowledgment message (e.g., HARQ-AN) indicating receipt of the second MAC CE.
  • the process 200 may include a step 218 in which the UE 102 determines that the MAC CE is for enabling skipping uplink transmission. In some aspects, the step 218 may include, if the UE 102 determines that the received MAC CE is for enabling skipping uplink transmission, enabling skipping uplink transmission (e.g., at least for dynamic grant).
  • FIG. 3 is a message flow diagram illustrating steps of a process 300 performed by a UE 102 and a network node 104 according to some aspects.
  • the UE 102 may be a MAC entity.
  • the UE 102 may be configured or reconfigured with skipping uplink transmission for configured grant enabled (e.g., skipUplinkTxDynamic may be configured with the value true). In some aspects, the UE 102 may be be configured or reconfigured with skipping uplink transmission for configured grant enabled via RRC. In some aspects, the UE 102 may be be configured or reconfigured with skipping uplink transmission for configured grant enabled by default.
  • configured grant enabled e.g., skipUplinkTxDynamic may be configured with the value true.
  • the UE 102 may be configured or reconfigured with skipping uplink transmission for configured grant enabled via RRC. In some aspects, the UE 102 may be be configured or reconfigured with skipping uplink transmission for configured grant enabled by default.
  • the process 300 may include a step 312 in which the network node 104 decides to disable skipping uplink transmission.
  • the step 312 may include the network node 104 sending a MAC CE (e.g., skipUplinkTxSemi-Static) to disable skipping uplink transmission for the UE 102 (e.g., at least for configured grant).
  • a MAC CE e.g., skipUplinkTxSemi-Static
  • the UE 102 may receive the MAC CE sent by the network node 104. In some aspects, as shown in FIG. 3, the UE 102 may send an acknowledgment message (e.g., HARQ-AN) indicating receipt of the MAC CE.
  • an acknowledgment message e.g., HARQ-AN
  • the process 300 may include a step 314 in which the UE 102 determines that the MAC CE is for disabling skipping uplink transmission.
  • the step 314 may include, if the UE 102 determines that the received MAC CE is for disabling skipping uplink transmission, disabling skipping uplink transmission (e.g., at least for configured grant).
  • FIG. 4 is a message flow diagram illustrating steps of a process 200 performed by a UE 102 and a network node 104 according to some aspects.
  • the UE 102 may be a MAC entity.
  • the UE 102 may be configured or reconfigured with skipping uplink transmission for configured grant enabled (e.g., skipUplinkTxDynamic may be configured with the value true).
  • the UE 102 may be be configured or reconfigured with skipping uplink transmission for configured grant enabled via RRC.
  • the UE 102 may be be configured or reconfigured with skipping uplink transmission for configured grant enabled by default.
  • the process 400 may include a step 412 in which the network node 104 decides to disable skipping uplink transmission.
  • the step 412 may include the network node 104 sending a MAC CE (e.g., skipUplinkTxSemi-Static) to disable skipping uplink transmission for the UE 102 (e.g., at least for configured grant).
  • a MAC CE e.g., skipUplinkTxSemi-Static
  • the UE 102 may receive the MAC CE sent by the network node 104. In some aspects, as shown in FIG. 4, the UE 102 may send an acknowledgment message (e.g., HARQ-AN) indicating receipt of the MAC CE.
  • an acknowledgment message e.g., HARQ-AN
  • the process 400 may include a step 414 in which the UE 102 determines that the MAC CE is for disabling skipping uplink transmission.
  • the step 414 may include, if the UE 102 determines that the received MAC CE is for disabling skipping uplink transmission, disabling skipping uplink transmission (e.g., at least for configured grant).
  • the process 400 may include a step 416 in which the network node 104 decides to enable skipping uplink transmission (e.g., at least for configured grant).
  • the step 416 may include the network node 104 sending a second MAC CE (e.g., skipUplinkTxSemi-Static) to enable skipping uplink transmission for the UE 102 (at least for configured grant).
  • a second MAC CE e.g., skipUplinkTxSemi-Static
  • the UE 102 may receive the second MAC CE sent by the network node 104. In some aspects, as shown in FIG. 4, the UE 102 may send an acknowledgment message (e.g., HARQ-AN) indicating receipt of the second MAC CE.
  • an acknowledgment message e.g., HARQ-AN
  • the process 400 may include a step 418 in which the UE 102 determines that the MAC CE is for enabling skipping uplink transmission.
  • the step 418 may include, if the UE 102 determines that the received MAC CE is for enabling skipping uplink transmission, enabling skipping uplink transmission (e.g., at least for configured grant).
  • the MAC CE for controlling (e.g., enabling or disabling) skipping uplink transmission may be a new MAC CE for semi-static controlling of skip uplink transmission for both dynamic grant scheduling and configured grant scheduling between the network node 104 (e.g., gNB) and the UE 102.
  • the cell may include an area 501 without discontinuous transmission (DTX) detection ambiguity and an area 502 in which DTX detection ambiguity may occur.
  • the area 502 may be at the cell edge.
  • DTX detection ambiguity may occur when the UE 102 enters the area 502 because, due to the bad RF condition, the network node 104 may be unable to differentiate between uplink skipping from actual DTX.
  • RF radio frequency
  • the network node 104 may configure the UE 102 with uplink transmission skipping enabled in the area 501 (e.g., the area without DTX detection ambiguity).
  • uplink transmission skipping may be enabled implicitly (e.g., as specified in Rel- 15).
  • the UE 102 may skip uplink transmission if there are no data in the UE buffer and there is uplink grant.
  • the network node 104 when the network node 104 decides to disable uplink skipping (e.g., based on measured channel quality, which may indicate that the UE 101 has entered the area 502 in which DTX detection ambiguity may occur), the network node 104 may send out MAC CE for skipUplinkTxSemi-Static to disable uplink skipping.
  • the UE 102 with skipping uplink transmission disabled, the UE 102 will not skip uplink transmission if there are no data in UE buffer and there is uplink grant (e.g., the UE may transmit dummy data in this case).
  • the network node 104 may send out MAC CE for skipUplinkTxSemi-Static to enable uplink skipping.
  • the UE 102 may skip uplink transmission if there are no data in the UE buffer and there is uplink grant.
  • the network node 104 may avoid both the ambiguity for DTX detection and the RRC reconfiguration procedure in dynamic grant scheduling by controlling uplink skipping on or off dynamically (e.g., using a MAC CE).
  • the network node 104 may additionally or alternatively avoid the ambiguity in configured grant scheduling by controlling uplink transmission skipping on or off dynamically (e.g., using a MAC CE).
  • the ability to control uplink transmission skilling dynamically is may provide an advantage over the state-of-art, as there are no ways in current specification to switch off uplink skipping for configured grant configuration.
  • the network node 104 may determine to disable skipping uplink transmission (e.g., in step 112 of FIG. 1, step 212 of FIG. 2, step 312 of FIG. 3, and/or step 412 of FIG. 4) if the network node 204 determines that (a) ULCQ measured + Hysteresis ⁇ an uplink channel quality threshold or (b) DLCQ measured + Hysteresis ⁇ a downlink channel quality threshold, where ULCQ measured is the measured channel quality in uplink, and DLCQ measured is the measured channel quality in downlink.
  • the network node 104 may determine to enable skipping uplink transmission (e.g., in step 216 of FIG. 2 and/or step 416 of FIG.
  • the uplink channel quality threshold may be equal to max(CQ_threshold_PUSCH_misdetection, CQ threshold PUSCH repetition misdetection), wherein CQ threshold PUSCH misdetection is the threshold of channel quality of physical uplink shared channel (PUSCH), and CQ threshold PUSCH repetition misdetection is the threshold of channel quality of PUSCH with repetition.
  • the downlink channel quality threshold may be CQ threshold PDCCH misdetection, which may be the threshold of channel quality of physical downlink control channel (PDCCH).
  • the network node 104 may determine whether to disable or enable skipping uplink transmission in these manners for one or both of configured grant and dynamic grant.
  • a MAC CE may be used to enable (e.g., turn-on) and disable (e.g., turn-off) skipping uplink transmission for the MAC entity (e.g., UE 102) to which the MAC CE is transmitted.
  • the MAC CE may use a logical channel identifier (LCID) value that indicates that the MAC CE is for controlling (e.g., enabling or disabling) skipping uplink transmission.
  • the LCID value of the MAC CE may be a reserved value of the LCID (e.g., 46). See Table 1 below.
  • the MAC CE can use an extended LCID (eLCID) value to indicate that the MAC CE is for controlling (e.g., enabling or disabling) skipping uplink transmission.
  • the MAC CE may include enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission in the MAC entity (e.g., the UE 102).
  • the MAC CE may include an E bit that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission.
  • the MAC CE may also include one or more reserved bits R.
  • a first value (e.g., 1) of the enable/disable indicator may indicate that the MAC CE is for enabling skipping uplink transmission
  • a second value (e.g., 0) of the enable/disable indicator may indicate that the MAC CE is for disabling skipping uplink transmission.
  • the UE 102 may enable skipping uplink transmission.
  • the UE 102 may disable skipping uplink transmission.
  • two MAC CEs may be separately defined.
  • the two MAC CEs may have only have a subheader and no content.
  • a first one of the two MAC CEs may be used to enable skipping uplink transmission, and a second one of the two MAC CEs may be used to disable skipping uplink transmission.
  • the first and second MAC CEs may have different LCIDs. For example, in some aspects, an LCID equal to 46 may be used to indicate that MAC CE is for enabling skipping uplink transmission, and an LCID equal to 47 may be used to indicate that the MAC CE is for disabling skipping uplink transmission.
  • the MAC CE may be used to enable (e.g., turn-on) and disable (e.g., turn-off) skipping uplink transmission for all configured serving cells for the MAC entity (e.g., UE 102) to which the MAC CE is transmitted.
  • the MAC CE may include a bit map indicating whether to enable or disable uplink transmission skipping for each cell.
  • content of the MAC CE may include one bit for each cell, a first bit value (e.g., 1) may indicate that the MAC CE is for enabling skipping uplink transmission for the corresponding cell, and a second bit value (e.g., 0) may indicate that the MAC CE is for disabling skipping uplink transmission for the corresponding cell.
  • each bit Ci may correspond to a cell id i.
  • the MAC CE may include one byte of content.
  • a MAC CE may include four bytes of content, and the MAC CE may be capable of indicating whether to enable or disable up to 32 configured cells.
  • both a MAC CE having one byte of content and a MAC CE having four bytes of content are introduced, and the network node 104 may select one of the MAC CEs depending on the number of cells for which skipping uplink transmission is being enabled or disabled.
  • the MAC CE may be used to enable (e.g., turn-on) and disable (e.g., turn-off) skipping uplink transmission for one configured serving cell for the MAC entity (e.g., UE 102) to which the MAC CE is transmitted.
  • the MAC CE may include a serving cell ID and an enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for the serving cell identified by the serving cell ID.
  • the MAC CE may include an E bit that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for the identified serving cell.
  • an enable/disable indicator e.g., one bit
  • the MAC CE may also include one or more reserved bits R.
  • a first value (e.g., 1) of the enable/disable indicator may indicate that the MAC CE is for enabling skipping uplink transmission
  • a second value (e.g., 0) of the enable/disable indicator may indicate that the MAC CE is for disabling skipping uplink transmission.
  • the UE 102 may enable skipping uplink transmission for the identified serving cell.
  • the UE 102 may disable skipping uplink transmission for the identified serving cell.
  • a per serving cell indication may be useful because, in one MAC entity (e.g., one cell group), the serving cells can be in different location and thus different channel conditions to the UE 102.
  • the MAC CE may be used to enable (e.g., turn-on) and disable (e.g., turn-off) skipping uplink transmission separately for configured grant and dynamic grant.
  • This separate control of skipping uplink transmission for configured grant and dynamic grant is applicable to all of the aspects above.
  • the MAC CE may include a configured grant enable/disable indicator (e.g., one bit E C) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for the MAC entity (e.g., UE 102) and a dynamic grant enable/disable indicator (e.g., one bit E D) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for the MAC entity (e.g., UE 102).
  • the MAC CE may also include one or more reserved bits R.
  • four MAC CEs may be defined: (i) a first MAC CE to enable skipping uplink transmission for dynamic grant, (ii) a second MAC CE to disable skipping uplink transmission for dynamic grant for dynamic grant, (iii) a third MAC CE to enable skipping uplink transmission for configured grant, and (iv) a fourth MAC CE disable skipping uplink transmission for configured grant.
  • each of the four MAC CEs may have a different LCID.
  • the MAC CE may be used to separately enable (e.g., turn-on) or disable (e.g., turn-off) skipping uplink transmission for configured grant and dynamic grant aspects for all configured serving cells for the MAC entity to which the MAC CE is transmitted.
  • the MAC CE may include a first bit map indicating whether to enable or disable uplink transmission skipping for dynamic grant for each cell, and a second bit map indicating whether to enable or disable uplink transmission skipping for configured grant for each cell.
  • content of the MAC CE may include the first and second bit maps, and each of the bit maps may include one bit for each cell.
  • a first bit value (e.g., 1) may indicate that the MAC CE is for enabling skipping uplink transmission for the corresponding cell
  • a second bit value (e.g., 0) may indicate that the MAC CE is for disabling skipping uplink transmission for the corresponding cell.
  • each bit Ci of the first and second bitmaps may correspond to a cell id i.
  • the MAC CE may include two octets of content: one octet for dynamic grant, and another octet for configured grant.
  • one MAC CE may be for one serving cell, which is identified by a serving cell ID, which is included in the MAC CE.
  • the MAC CE may include a configured grant enable/disable indicator (e.g., one bit E C) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for the identified serving cell of the UE 102
  • the MAC CE may include a dynamic grant enable/disable indicator (e.g., one bit E D) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for the identified serving cell of the UE 102.
  • a MAC CE may enable or disable simultaneously the Rel-15 version of skipping uplink transmission (RRC configured value SkipUplinkTxDynamic and the implicit SkipUplinkTxConfigured, which is true by default) and the Rel-16 version of skipping uplink transmission (RRC configured value of enhancedSkipUplinkTxDynamic and enhancedSkipUplinkTxConfigured).
  • a MAC CE may enable or disable only one version (either Rel-16 version or Rel-15 version) of skipping uplink transmission.
  • the version to which the MAC CE applies may be fixed in the specification, identified by different LCIDs for different MAC CEs, or identified by a separate bit in the MAC CE.
  • the MAC CE may be enable or disable the skipping uplink transmission status regardless of what has been configured by RRC. For example, in some aspects, skipping uplink transmission may be disabled by a MAC CE even if RRC configuration has not configured skipping uplink transmission to be enabled. This ability of the MAC CE to enable or disable skipping uplink transmission may apply to both configured grant and dynamic grant and/or to both skipping uplink transmission with or without checking on uplink control information (UCI). In some alternative aspects, the MAC CE may only be able to enable or disable what has been configured with true by RRC, including the implicitly configured with true for configured grant in Rel-15 (i.e., skipUplinkTxConfigured).
  • enhancedSkipUplinkTxDynamic if enhancedSkipUplinkTxDynamic is configured by RRC with false, then the UE 102 shall ignore the indication of the MAC CE, when applied to Rel-16 skipping uplink transmission for dynamic grant (e.g., as configured by enhancedSkipUplinkTxDynamic).
  • skipUplinkTxDynamic but not the enhancedSkipUplinkTxDynamic
  • the UE 102 does not enable enhancedSkipUplinkTxDynamic.
  • the MAC CE may be used to turn-on and turn-off the skipUplinkTransmission separately for configured grant and dynamic grant and also separately for the functionality supported in Rel-15 version (no checking on UCI, i.e., skipUplinkTxDynamic and skipUplinkTxConfigured) and supported in Rel-16 version (checking on UCI, i.e., enhancedSkipUplinkTxDynamic and enhancedSkipUplinkTxConfigured).
  • Rel-15 version no checking on UCI, i.e., skipUplinkTxDynamic and skipUplinkTxConfigured
  • Rel-16 version checking on UCI, i.e., enhancedSkipUplinkTxDynamic and enhancedSkipUplinkTxConfigured.
  • the MAC CE may include four bit maps: a first configured grant bit map, a first dynamic grant bit map, a second configured grant bit map, and a second dynamic grant bit map.
  • each bit of the first configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for a serving cell for the UE.
  • each bit of the first dynamic grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE.
  • each bit of the second configured grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE.
  • each bit of the second dynamic grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic with a check on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE.
  • Some aspects may include some or all of the features disclosed in the following specification implementation, in which underlining is used to show changes relative to the current MAC protocol specification.
  • the MAC entity shall:
  • the MAC PDU includes only the periodic BSR and there is no data available for any LCG, or the MAC PDU includes only the padding BSR:
  • the MAC PDU includes only the periodic BSR and there is no data available for any LCG, or the MAC PDU includes only the padding BSR:
  • UE shall set the value of the SkipUplinkTxDvanmic. SkipUplinkTxConfigured. enhancedSkipUplinkTxDvanmic. and enhancedSkipUplinkTxConfigured according to the content in the MAC CE.
  • UE shall set the value of the SkipUplinkTxConfigured according to the content in the MAC CE.
  • UE shall set the value of SkipUplinkTxDynamic according to the MAC CE if RRC has configured SkipUplinkTxDynamic to be true otherwise the UE shall not change the value of SkipUplinkTxDynamic.
  • RRC has configured SkipUplinkTxDynamic to be true otherwise the UE shall not change the value of SkipUplinkTxDynamic.
  • FIG. 12 illustrates a process 1200 performed by the network node (104) (e.g., gNB, eNB, base station, or access node) according to some aspects.
  • the network node (104) e.g., gNB, eNB, base station, or access node
  • the process 1200 may include an optional step 1202 in which the network node 104 configures or reconfigures a user equipment (UE) 102 via Radio Resource Control (RRC).
  • RRC Radio Resource Control
  • configuring or reconfiguring the UE 102 via RRC may include activating or deactivating skipping uplink transmission for the UE 102.
  • the process 1200 may include a step 1204 in which the network node 104 determines to control skipping uplink transmission for the UE 102.
  • determining to control skipping uplink transmission for the UE 102 in step 1204 may include determining a signal-to-noise and interference ratio (SINR).
  • SINR may include using a measured channel quality in uplink and/or a measured channel quality in downlink.
  • determining to control skipping uplink transmission for the UE 102 may include determining that the SINR is low and, if the SINR is determined to be low, determining to disable skipping uplink transmission for the UE 102.
  • determining to control skipping uplink transmission for the UE 102 in step 1204 may include determining that a measured channel quality in uplink plus hysteresis is less than an uplink channel quality threshold and, if the measured channel quality in uplink plus hysteresis is determined to be less than the uplink channel quality threshold, determining to disable skipping uplink transmission for the UE 102.
  • the uplink channel quality threshold may be a threshold of channel quality of physical uplink shared channel (PUSCH), a threshold of channel quality of PUSCH with repetition, or a maximum value of the threshold of channel quality of PUSCH and the threshold of channel quality of PUSCH with repetition.
  • determining to control skipping uplink transmission for the UE 102 in step 1204 may include determining that the measured channel quality in downlink plus hysteresis is less than a downlink channel quality threshold and, if the measured channel quality in downlink plus hysteresis is determined to be less than the downlink channel quality threshold, determining to disable skipping uplink transmission for the UE 102.
  • the downlink channel quality threshold may be a threshold of channel quality of physical downlink control channel (PDCCH).
  • determining to control skipping uplink transmission for the UE 102 in step 1204 may include determining that a measured channel quality in uplink minus hysteresis is greater than an uplink channel quality threshold and/or determining that the measured channel quality in downlink minus hysteresis is greater than a downlink channel quality threshold.
  • determining to control skipping uplink transmission for the UE 102 in step 1204 may include, if the measured channel quality in uplink minus hysteresis is determined to be greater than the uplink channel quality threshold and/or the measured channel quality in downlink minus hysteresis is determined to be greater than a downlink channel quality threshold, determining to enable skipping uplink transmission for the UE.
  • the process 1200 may include a step 1206 in which the network node 104, if skipping uplink transmission for the UE is determined to be controlled, sends a medium access control (MAC) control element (CE) to control skipping uplink transmission for the UE 102
  • MAC medium access control
  • CE control element
  • the MAC CE may have a logical channel identifier (LCID) value (e.g., 46 or 47) or an extended LCID (eLCID) that indicates that the MAC CE is for controlling skipping uplink transmission.
  • the MAC CE may have a logical channel identifier (LCID) value (e.g., 46 or 47) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission.
  • the MAC CE may include an enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for the UE 102.
  • the MAC CE may include a bit map, and each bit of the bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for a serving cell for the UE 102.
  • the MAC CE may include an identification (ID) of a serving cell of the UE and an enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for the serving cell of the UE.
  • ID identification
  • an enable/disable indicator e.g., one bit
  • determining to control skipping uplink transmission for the UE 102 in step 1204 may include determining to control skipping uplink transmission for one or both of configured grant and dynamic grant.
  • the MAC CE sent in step 1206 may include (i) a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant and (ii) a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant.
  • determining to control skipping uplink transmission for the UE 102 in step 1204 may include determining to control skipping uplink transmission in one of configured grant and dynamic grant.
  • the MAC CE sent in step 1206 may have a logical channel identifier (LCID) value that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission in the one of configured grant and dynamic grant.
  • LCID logical channel identifier
  • the MAC CE sent in step 1206 may include a configured grant bit map and a dynamic grant bit map, each bit of the configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for a serving cell for the UE 102, and each bit of the dynamic grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for a serving cell for the EE 102.
  • the MAC CE sent in step 1206 may include an identification (ID) of a serving cell of the UE 102.
  • the MAC CE may include a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for the serving cell of the UE 102.
  • the MAC CE may include a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for the serving cell of the UE 102.
  • the MAC CE sent in step 1206 may include: (i) a first configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission; (ii) a first dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission; (iii) a second configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission; and (iv) a second dynamic grant enable/disable indicator (
  • the MAC CE sent in step 1206 may have a logical channel identifier (LCID) value that indicates that the MAC CE is for one of (i) enabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission, (ii) disabling skipping uplink transmission for configured grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iii) enabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iv) disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (v) enabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission, (vi) disabling skipping uplink transmission for configured grant with a check on whether UCI
  • LCID logical
  • the MAC CE sent in step 1206 may include a first configured grant bit map, a first dynamic grant bit map, a second configured grant bit map, and a second dynamic grant bit map.
  • each bit of the first configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for a serving cell for the UE 102.
  • UCI uplink control information
  • PUSCH physical uplink shared channel
  • each bit of the first dynamic grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE 102.
  • each bit of the second configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE 102.
  • each bit of the second dynamic grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic with a check on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE 102.
  • the MAC CE sent in step 1206 may include: (i) an identification (ID) of a serving cell of the UE 102; (ii) a first configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for the serving cell of the UE; (iii) a first dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for the serving cell of the UE; (iv) a second configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a
  • the MAC CE sent in step 1206 may additionally include an indicator on whether to check whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission.
  • UCI uplink control information
  • PUSCH physical uplink shared channel
  • determining to control skipping uplink transmission for the UE 102 in step 1204 may include determining to disable skipping uplink transmission for the UE 102.
  • the MAC CE to control skipping uplink transmission for the UE 102 may be a first MAC CE to disable skipping uplink transmission for the UE 102.
  • the process 1200 may further include a step in which the network node 104 determines to enable skipping uplink transmission for the UE 102.
  • the process 1200 may further include a step in which the network node 104, if skipping uplink transmission for the UE 102 is determined to be enabled, sends a second MAC CE to enable skipping uplink transmission for the UE 102.
  • the first and second MAC CEs may have the same logical channel identifier (LCID) value (e.g., 46). In some alternative aspects, the first and second MAC CEs may have different logical channel identifier (LCID) values (e.g., 47 and 46, respectively). In some aspects, determining to enable skipping uplink transmission for the UE 102 may include determining that a signal-to-noise and interference ratio (SINR) is not low.
  • SINR signal-to-noise and interference ratio
  • determining to enable skipping uplink transmission for the UE 102 may include: determining that a measured channel quality in uplink minus hysteresis is greater than an uplink channel quality threshold; and/or determining that the measured channel quality in downlink minus hysteresis is greater than a downlink channel quality threshold.
  • FIG. 13 illustrates a process 1300 performed by the user equipment (UE) 102 according to some aspects.
  • the UE 102 may be a MAC entity.
  • the process 1300 may include an optional step 1302 of configuring or reconfiguring the UE 102 via Radio Resource Control (RRC).
  • RRC Radio Resource Control
  • configuring or reconfiguring the UE 102 via RRC may include activating or deactivating skipping uplink transmission for the UE 102.
  • the process 1300 may include a step 1304 in which the UE 102 receives a medium access control (MAC) control element (CE).
  • MAC medium access control
  • CE control element
  • the process 1300 may include a step 1306 in which the UE 102 determines that the MAC CE is for controlling skipping uplink transmission.
  • the process 1300 may include a step 1308 in which the UE 102, if the received MAC CE is determined to be for controlling skipping uplink transmission, enables or disables skipping uplink transmission.
  • determining that the MAC CE is for controlling skipping uplink transmission in step 1306 may include the UE 102 determining that the MAC CE has a logical channel identifier (LCID) value (e.g., 46 or 47) or an extended LCID (eLCID) that indicates that the MAC CE is for controlling skipping uplink transmission.
  • determining that the MAC CE is for controlling skipping uplink transmission in step 1306 may include determining that the MAC CE has a logical channel identifier (LCID) value (e.g., 46 or 47) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission.
  • LCID logical channel identifier
  • the step 1308 may include the UE 102, if the LCID value indicates that the MAC CE is for enabling skipping uplink transmission, enabling skipping uplink transmission. In some aspects, the step 1308 may include the UE 102, if the LCID value indicates that the MAC CE is for disabling skipping uplink transmission, disabling skipping uplink transmission.
  • the MAC CE may include an enable/disable indicator (e.g., one bit) having a value that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission.
  • the step 1308 may include the UE 102, if the enable/disable indicator has a value that indicates that the MAC CE is for enabling skipping uplink transmission, enabling skipping uplink transmission.
  • the step 1308 may include the UE 102, if the enable/disable indicator has a value that indicates that the MAC CE is for disabling skipping uplink transmission, disabling skipping uplink transmission.
  • determining that the MAC CE is for controlling skipping uplink transmission in step 1306 may include determining that the MAC CE is for controlling skipping uplink transmission for one or more serving cells for the UE 102, and enabling or disabling skipping uplink transmission in step 1308 may include enabling or disabling skipping uplink transmission for the one or more serving cells for the UE 102.
  • the MAC CE may include a bit map, and each bit of the bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for a serving cell for the UE. In some aspects, as shown in FIG.
  • the MAC CE may include an identification (ID) of a serving cell of the UE 102 and an enable/disable indicator (e.g., one bit) of the MAC CE has a value that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for the serving cell of the UE 102.
  • ID an identification
  • enable/disable indicator e.g., one bit
  • determining that the MAC CE is for controlling skipping uplink transmission in step 1306 may include the UE 102 determining that the MAC CE is for controlling skipping uplink transmission for one or both of configured grant and dynamic grant
  • enabling or disabling skipping uplink transmission in step 1308 may include the UE 102 enabling or disabling skipping uplink transmission for the one or both of configured grant and dynamic grant.
  • the MAC CE may include (i) a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant and (ii) the MAC CE may include a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant.
  • a configured grant enable/disable indicator e.g., one bit
  • the MAC CE may include a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant.
  • enabling or disabling skipping uplink transmission in step 1308 may include the UE 102 enabling or disabling skipping uplink transmission for configured grant based on a value of the configured grant enable/disable indicator and enabling or disabling skipping uplink transmission for dynamic grant based on a value of the dynamic grant enable/disable indicator.
  • determining that the MAC CE is for controlling skipping uplink transmission in step 1306 may include the UE 102 determining that a value of a logical channel identifier (LCID) of the MAC CE indicates whether the MAC CE is for (i) enabling skipping uplink transmission for configured grant, (ii) disabling skipping uplink transmission for configured grant, (iii) enabling skipping uplink transmission for dynamic grant, and (iv) disabling skipping uplink transmission for dynamic grant.
  • the step 1308 may include the UE 102, based on the value of the LCID, enabling or disabling skipping uplink transmission for one of configured grant and dynamic grant.
  • the MAC CE received in step 1304 may include a configured grant bit map and a dynamic grant bit map.
  • each bit of the configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for a serving cell for the UE 102.
  • each bit of the dynamic grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for a serving cell for the UE.
  • enabling or disabling skipping uplink transmission in step 1308 may include the UE 102 enabling or disabling skipping uplink transmission for configured grant and/or dynamic grant for one or more serving cells for the UE 102 based on the configured grant and dynamic grant bit maps.
  • the MAC CE received in step 1304 may include: (i) an identification (ID) of a serving cell of the UE 102, (ii) a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for the serving cell of the UE 102, and (iii) a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for the serving cell ofthe UE 102.
  • ID identification
  • a configured grant enable/disable indicator e.g., one bit
  • a dynamic grant enable/disable indicator e.g., one bit
  • the MAC CE received in step 1304 may include: (i) a first configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission; (ii) a first dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission; (iii) a second configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission; and (iv) a second dynamic grant enable/disable indicator (
  • the MAC CE received in step 1304 may have a logical channel identifier (LCID) value that indicates that the MAC CE is for one of (i) enabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission, (ii) disabling skipping uplink transmission for configured grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iii) enabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iv) disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (v) enabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission, (vi) disabling skipping uplink transmission for configured grant with a check on whether UCI
  • LCID logical
  • the MAC CE received in step 1304 may include a first configured grant bit map, a first dynamic grant bit map, a second configured grant bit map, and a second dynamic grant bit map.
  • each bit of the first configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for a serving cell for the UE 102.
  • UCI uplink control information
  • PUSCH physical uplink shared channel
  • each bit of the first dynamic grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE.
  • each bit of the second configured grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE.
  • each bit of the second dynamic grant bit map may indicate whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic with a check on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE.
  • the MAC CE received in step 1304 may include: (i) an identification (ID) of a serving cell of the UE 102; (ii) a first configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for the serving cell of the UE 102; (iii) a first dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for the serving cell of the UE 102; (iv) a second configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured
  • enabling or disabling skipping uplink transmission in step 1308 if the received MAC CE is determined to be for controlling skipping uplink transmission in step 1306 may include, in accordance with the MAC CE, enabling or disabling one or more of (i) skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission, (ii) skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iii) skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission, and (iv) skipping uplink transmission for dynamic grant with a check on whether UCI is to be multiplexed on a PUSCH transmission.
  • UCI uplink control information
  • PUSCH physical uplink shared channel
  • enabling or disabling skipping uplink transmission if the received MAC CE is determined to be for controlling skipping uplink transmission does not comprise: (i) enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission if skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission was not previously enabled via radio resource control (RRC); (ii) enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission if skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission was not previously enabled via RRC; and/or (iii) enabling or disabling skipping uplink transmission for dynamic grant with a check on whether UCI is to be multiplexed on a PUSCH transmission if skipping uplink transmission for dynamic grant with a check on
  • the MAC CE received in step 1304 may be a first MAC CE for disabling skipping uplink transmission
  • the process 1300 may further include a step in which the UE 102 receives a second MAC CE and a step in which the UE 102 determines that the second MAC CE is for enabling skipping uplink transmission.
  • the UE 102 may enable skipping uplink transmission.
  • the first and second MAC CEs may have the same logical channel identifier (LCID) value (e.g., 46).
  • the first and second MAC CEs have different logical channel identifier (LCID) values (e.g., 47 and 46, respectively).
  • the process 1300 may further include a step in which the UE 102 determines an uplink grant and a step in which the UE 102 determines that a buffer of the UE 102 does not have data to transmit.
  • the UE 102 may, if an uplink grant is determined, the buffer of the UE 102 is determined to not have data to transmit, and skipping uplink transmission is enabled, skip uplink transmission.
  • the UE 102 may, if an uplink grant is determined, the buffer of the UE 102 is determined to not have data to transmit, and skipping uplink transmission is disabled, transmit dummy data.
  • the process 1300 may further include a step in which the UE 102 determines an uplink grant, a step in which the UE 102 determines that a buffer of the UE 102 has data to transmit. In some aspects, the UE 102 may, if an uplink grant is determined and the buffer of the UE 102 is determined to have data to transmit, transmit the data.
  • the process 1300 may further include a step in which the UE 102 determines an uplink grant, a step in which the UE 102 determines that a buffer of the UE 102 does not have data to transmit, and step in which the UE 102 determines that uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission.
  • the UE 102 may, if an uplink grant is determined, the buffer of the UE is determined to not have data to transmit, skipping uplink transmission is enabled, and UCI is determined to be multiplexed on a PUSCH transmission, transmit dummy data.
  • FIG. 14 is a block diagram of a UE 102 according to some aspects.
  • UE 102 may include: processing circuitry (PC) 1402, which may include one or more processors (P) 1455 (e.g., one or more general purpose microprocessors and/or one or more other processors, such as an application specific integrated circuit (ASIC), field-programmable gate arrays (FPGAs), and the like); communication circuitry 1448, which is coupled to an antenna arrangement 1449 comprising one or more antennas and which comprises a transmitter (Tx)
  • processors e.g., one or more general purpose microprocessors and/or one or more other processors, such as an application specific integrated circuit (ASIC), field-programmable gate arrays (FPGAs), and the like
  • communication circuitry 1448 which is coupled to an antenna arrangement 1449 comprising one or more antennas and which comprises a transmitter (Tx)
  • CPP computer program product
  • CPP 1441 includes a computer readable medium (CRM) 1442 storing a computer program (CP) 1443 comprising computer readable instructions (CRI) 1444.
  • CRM 1442 may be a non-transitory computer readable medium, such as, magnetic media (e.g., a hard disk), optical media, memory devices (e.g., random access memory, flash memory), and the like.
  • the CRI 1444 of computer program 1443 is configured such that when executed by PC 1402, the CRI causes UE 1400 to perform steps described herein (e.g., steps described herein with reference to the flowcharts herein).
  • UE 102 may be configured to perform steps described herein without the need for code. That is, for example, PC 1402 may consist merely of one or more ASICs. Hence, the features of the aspects described herein may be implemented in hardware and/or software. [00155] FIG.
  • the network node 504 may comprise: processing circuitry (PC) 1502, which may include one or more processors (P) 1555 (e.g., one or more general purpose microprocessors and/or one or more other processors, such as an application specific integrated circuit (ASIC), field-programmable gate arrays (FPGAs), and the like), which processors may be co-located in a single housing or in a single data center or may be geographically distributed (i.e., the network node 104 may be a distributed computing apparatus); a network interface 1568 comprising a transmitter (Tx) 1565 and a receiver (Rx) 1567 for enabling the network node 1104 to transmit data to and receive data from other nodes connected to a network 110 (e.g., an Internet Protocol (IP) network) to which network interface 1568 is connected; communication circuitry 1548, which is coupled to an antenna arrangement 1549 comprising one or more antennas and which
  • IP Internet Protocol
  • CPP 1541 includes a computer readable medium (CRM) 1542 storing a computer program (CP) 1543 comprising computer readable instructions (CRI) 1544.
  • CRM 1542 may be a non-transitory computer readable medium, such as, magnetic media (e.g., a hard disk), optical media, memory devices (e.g., random access memory, flash memory), and the like.
  • the CRI 1544 of computer program 1543 is configured such that when executed by PC 1502, the CRI causes the network node 104 to perform steps described herein (e.g., steps described herein with reference to the flowcharts herein).
  • the network node 104 may be configured to perform steps described herein without the need for code. That is, for example, PC 1502 may consist merely of one or more ASICs. Hence, the features of the aspects described herein may be implemented in hardware and/or software.
  • a method (1200) performed by a network node (104) (e.g., gNB, eNB, base station, or access node), the method comprising: determining to control skipping uplink transmission for a user equipment (HE) (102); and, if skipping uplink transmission for the UE is determined to be controlled, sending a medium access control (MAC) control element (CE) to control skipping uplink transmission for the UE.
  • a network node (104) e.g., gNB, eNB, base station, or access node
  • HE user equipment
  • CE medium access control element
  • determining to control skipping uplink transmission for the UE comprises determining a signal-to-noise and interference ratio (SINR).
  • SINR signal-to-noise and interference ratio
  • determining the SINR comprises using a measured channel quality in uplink and/or a measured channel quality in downlink.
  • determining to control skipping uplink transmission for the UE comprises determining that the SINR is low and, if the SINR is determined to be low, determining to disable skipping uplink transmission for the UE.
  • determining to control skipping uplink transmission for the UE comprises determining that a measured channel quality in uplink plus hysteresis is less than an uplink channel quality threshold and, if the measured channel quality in uplink plus hysteresis is determined to be less than the uplink channel quality threshold, determining to disable skipping uplink transmission for the UE.
  • the uplink channel quality threshold is a threshold of channel quality of physical uplink shared channel (PUSCH), a threshold of channel quality of PUSCH with repetition, or a maximum value of the threshold of channel quality of PUSCH and the threshold of channel quality of PUSCH with repetition.
  • PUSCH physical uplink shared channel
  • determining to control skipping uplink transmission for the UE comprises determining that the measured channel quality in downlink plus hysteresis is less than a downlink channel quality threshold and, if the measured channel quality in downlink plus hysteresis is determined to be less than the downlink channel quality threshold, determining to disable skipping uplink transmission for the UE.
  • the downlink channel quality threshold is a threshold of channel quality of physical downlink control channel (PDCCH).
  • PDCH physical downlink control channel
  • determining to control skipping uplink transmission for the UE comprises determining that a measured channel quality in uplink minus hysteresis is greater than an uplink channel quality threshold and/or determining that the measured channel quality in downlink minus hysteresis is greater than a downlink channel quality threshold.
  • determining to control skipping uplink transmission for the UE comprises, if the measured channel quality in uplink minus hysteresis is determined to be greater than the uplink channel quality threshold and/or the measured channel quality in downlink minus hysteresis is determined to be greater than a downlink channel quality threshold, determining to enable skipping uplink transmission for the UE.
  • A12 The method of any one of embodiments Al-Al 1, wherein the MAC CE has a logical channel identifier (LCID) value (e.g., 46 or 47) or an extended LCID (eLCID) that indicates that the MAC CE is for controlling skipping uplink transmission.
  • LCID logical channel identifier
  • eLCID extended LCID
  • A13 The method of any one of embodiments A1-A12, wherein the MAC CE has a logical channel identifier (LCID) value (e.g., 46 or 47) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission.
  • LCID logical channel identifier
  • A14 The method of any one of embodiments Al-Al 2, wherein the MAC CE includes an enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for the UE.
  • an enable/disable indicator e.g., one bit
  • A15 The method of any one of embodiments A1-A12, wherein the MAC CE includes a bit map, and each bit of the bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for a serving cell for the UE.
  • A16 The method of any one of embodiments Al-Al 2, wherein the MAC CE includes an identification (ID) of a serving cell of the UE and an enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for the serving cell of the UE.
  • ID an identification
  • enable/disable indicator e.g., one bit
  • determining to control skipping uplink transmission for the UE comprises determining to control skipping uplink transmission for one or both of configured grant and dynamic grant;
  • the MAC CE includes a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant;
  • the MAC CE includes a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant.
  • determining to control skipping uplink transmission for the UE comprises determining to control skipping uplink transmission in one of configured grant and dynamic grant; and the MAC CE has a logical channel identifier (LCID) value that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission in the one of configured grant and dynamic grant.
  • LCID logical channel identifier
  • each bit of the configured grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for a serving cell for the UE
  • each bit of the dynamic grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for a serving cell for the UE.
  • A20 The method of any one of embodiments A1-A12, wherein the MAC CE includes: an identification (ID) of a serving cell of the UE; a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for the serving cell of the UE; and a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for the serving cell of the UE.
  • ID identification
  • a configured grant enable/disable indicator e.g., one bit
  • a dynamic grant enable/disable indicator e.g., one bit
  • the MAC CE includes: a first configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission; a first dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission; a second configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission; and a second dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for
  • A22 The method of any one of embodiments A1-A12, wherein the MAC CE has a logical channel identifier (LCID) value that indicates that the MAC CE is for one of (i) enabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission, (ii) disabling skipping uplink transmission for configured grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iii) enabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iv) disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (v) enabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission, (vi) disabling skipping uplink transmission for configured
  • the MAC CE includes a first configured grant bit map, a first dynamic grant bit map, a second configured grant bit map, and a second dynamic grant bit map; each bit of the first configured grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for a serving cell for the UE; each bit of the first dynamic grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE; each bit of the second configured grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for
  • the MAC CE includes: an identification (ID) of a serving cell of the UE; a first configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for the serving cell of the UE; a first dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for the serving cell of the UE; a second configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiple
  • ID identification
  • a first configured grant enable/disable indicator e.g.
  • determining to control skipping uplink transmission for the UE comprises determining to disable skipping uplink transmission for the UE, the MAC CE to control skipping uplink transmission for the UE is a first MAC CE to disable skipping uplink transmission for the UE, and the method further comprises: determining to enable skipping uplink transmission for the UE; and, if skipping uplink transmission for the UE is determined to be enabled, sending a second MAC CE to enable skipping uplink transmission for the UE.
  • A26 The method of embodiment A25, wherein the first and second MAC CEs have the same logical channel identifier (LCID) value (e.g., 46).
  • A27 The method of embodiment A25, wherein the first and second MAC CEs have different logical channel identifier (LCID) values (e.g., 47 and 46, respectively).
  • A28 The method of any one of embodiments A25-A27, wherein determining to enable skipping uplink transmission for the UE comprises determining that a signal-to-noise and interference ratio (SINR) is not low.
  • SINR signal-to-noise and interference ratio
  • a network node (104) e.g., gNB, eNB, base station, or access node
  • UE user equipment
  • CE medium access control control element
  • MAC medium access control
  • C2 The method of embodiment Cl, further comprising: determining an uplink grant; determining that a buffer of the UE does not have data to transmit; if an uplink grant is determined, the buffer of the UE is determined to not have data to transmit, and skipping uplink transmission is enabled, skipping uplink transmission; and, if an uplink grant is determined, the buffer of the UE is determined to not have data to transmit, and skipping uplink transmission is disabled, transmitting dummy data.
  • RRC comprises activating or deactivating skipping uplink transmission for the UE.
  • LCID logical channel identifier
  • eLCID extended LCID
  • determining that the MAC CE is for controlling skipping uplink transmission comprises determining that the MAC CE has a logical channel identifier (LCID) value (e.g., 46 or 47) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission; if the LCID value indicates that the MAC CE is for enabling skipping uplink transmission, enabling skipping uplink transmission; and, if the LCID value indicates that the MAC CE is for disabling skipping uplink transmission, disabling skipping uplink transmission.
  • LCID logical channel identifier
  • the MAC CE comprises an enable/disable indicator (e.g., one bit) having a value that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission; if the enable/disable indicator has a value that indicates that the MAC CE is for enabling skipping uplink transmission, enabling skipping uplink transmission; and, if the enable/disable indicator has a value that indicates that the MAC CE is for disabling skipping uplink transmission, disabling skipping uplink transmission.
  • an enable/disable indicator e.g., one bit
  • Cl 1 The method of embodiment C9, wherein the MAC CE includes an identification (ID) of a serving cell of the UE and an enable/disable indicator (e.g., one bit) of the MAC CE has a value that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for the serving cell of the UE.
  • ID an identification
  • enable/disable indicator e.g., one bit
  • the MAC CE includes a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant;
  • the MAC CE includes a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant;
  • enabling or disabling skipping uplink transmission comprises enabling or disabling skipping uplink transmission for configured grant based on a value of the configured grant enable/disable indicator and enabling or disabling skipping uplink transmission for dynamic grant based on a value of the dynamic grant enable/disable indicator.
  • MAC CE is for controlling skipping uplink transmission comprises determining that a value of a logical channel identifier (LCID) of the MAC CE indicates whether the MAC CE is for (i) enabling skipping uplink transmission for configured grant, (ii) disabling skipping uplink transmission for configured grant, (iii) enabling skipping uplink transmission for dynamic grant, and (iv) disabling skipping uplink transmission for dynamic grant; based on the value of the LCID, enabling or disabling skipping uplink transmission for one of configured grant and dynamic grant.
  • LCID logical channel identifier
  • the MAC CE includes a configured grant bit map and a dynamic grant bit map; each bit of the configured grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for a serving cell for the UE; each bit of the dynamic grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for a serving cell for the UE; and enabling or disabling skipping uplink transmission comprises enabling or disabling skipping uplink transmission for configured grant and/or dynamic grant for one or more serving cells for the UE based on the configured grant and dynamic grant bit maps.
  • the MAC CE includes: an identification (ID) of a serving cell of the UE; a configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant for the serving cell of the UE; and a dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant for the serving cell of the UE.
  • ID identification
  • a configured grant enable/disable indicator e.g., one bit
  • a dynamic grant enable/disable indicator e.g., one bit
  • Cl 7. The method of any one of embodiments C1-C6, wherein the MAC CE includes: a first configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission; a first dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission; a second configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission; and a second dynamic grant enable/disable indicator (e.g., one bit) that
  • the MAC CE includes a first configured grant bit map, a first dynamic grant bit map, a second configured grant bit map, and a second dynamic grant bit map; each bit of the first configured grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for a serving cell for the UE; each bit of the first dynamic grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the UE; each bit of the second configured grant bit map indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission for a serving cell for the
  • C20 The method of any one of embodiments C1-C6, wherein the MAC CE includes: an identification (ID) of a serving cell of the UE; a first configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission for the serving cell of the UE; a first dynamic grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission for the serving cell of the UE; a second configured grant enable/disable indicator (e.g., one bit) that indicates whether the MAC CE is for enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplex
  • ID
  • enabling or disabling skipping uplink transmission if the received MAC CE is determined to be for controlling skipping uplink transmission comprises, in accordance with the MAC CE, enabling or disabling one or more of (i) skipping uplink transmission for configured grant without checking on whether uplink control information (UCI) is to be multiplexed on a physical uplink shared channel (PUSCH) transmission, (ii) skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission, (iii) skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission, and (iv) skipping uplink transmission for dynamic grant with a check on whether UCI is to be multiplexed on a PUSCH transmission.
  • UCI uplink control information
  • PUSCH physical uplink shared channel
  • enabling or disabling skipping uplink transmission if the received MAC CE is determined to be for controlling skipping uplink transmission does not comprise: enabling or disabling skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission if skipping uplink transmission for dynamic grant without checking on whether UCI is to be multiplexed on a PUSCH transmission was not previously enabled via radio resource control (RRC); enabling or disabling skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission if skipping uplink transmission for configured grant with a check on whether UCI is to be multiplexed on a PUSCH transmission was not previously enabled via RRC; and/or enabling or disabling skipping uplink transmission for dynamic grant with a check on whether UCI is to be multiplexed on a PUSCH transmission if skipping uplink transmission for dynamic grant with a check on
  • C23 The method of any one of embodiments C1-C22, wherein the MAC CE is a first MAC CE for disabling skipping uplink transmission, and the method further comprises: receiving a second MAC CE; determining that the second MAC CE is for enabling skipping uplink transmission; and, if the second MAC CE is determined to be for enabling skipping uplink transmission, enabling skipping uplink transmission.
  • a user equipment (UE) (102) adapted to: receive a medium access control (MAC) control element (CE); determine that the MAC CE is for controlling skipping uplink transmission; and, if the received MAC CE is determined to be for controlling skipping uplink transmission, enable or disable skipping uplink transmission.
  • MAC medium access control
  • a computer program comprising instructions for adapting an apparatus to perform the method of any one of embodiments A1-A28 and C1-C25.
  • An apparatus (102 or 104), the apparatus comprising: processing circuitry (1102); and a memory (1142), said memory containing instructions (1144) executable by said processing circuitry, whereby said apparatus is operative to perform the method of any one of the embodiments A1-A28 and C1-C25.
  • An apparatus (102 or 104) adapted to perform the method of any one of embodiments A1-A28 and C1-C25.

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

Abstract

L'invention concerne des procédés, des systèmes et des appareils servant à commander (p. ex. à activer ou à désactiver) un saut de transmission en liaison montante pour un équipement d'utilisateur (UE) à l'aide d'un élément de commande (CE) de commande d'accès au support (MAC). Un nœud de réseau peut, par exemple, déterminer qu'il convient de désactiver le saut de transmission en liaison montante pour l'UE si l'UE entre dans une zone où une qualité de canal mesurée indique une ambigüité de détection de transmission discontinue (DTX). Un UE peut recevoir un CE de MAC, déterminer que le CE de MAC sert à commander le saut de transmission en liaison montante, et, s'il est déterminé que le CE de MAC reçu sert à commander le saut de transmission en liaison montante, activer ou désactiver le saut de transmission en liaison montante.
PCT/SE2022/050653 2021-06-30 2022-06-29 Transmission en liaison montante avec saut semi-statique WO2023277777A1 (fr)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019183891A1 (fr) * 2018-03-29 2019-10-03 Telefonaktiebolaget Lm Ericsson (Publ) Nœud de réseau et procédé dans un réseau de communication sans fil
WO2021018221A1 (fr) * 2019-08-01 2021-02-04 FG Innovation Company Limited Procédé et appareil pour transmission de liaison descendante dans un ntn

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019183891A1 (fr) * 2018-03-29 2019-10-03 Telefonaktiebolaget Lm Ericsson (Publ) Nœud de réseau et procédé dans un réseau de communication sans fil
WO2021018221A1 (fr) * 2019-08-01 2021-02-04 FG Innovation Company Limited Procédé et appareil pour transmission de liaison descendante dans un ntn

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Title
3GPP TS 38.331
NOKIA ET AL: "Reliability Improvements for RRC_CONNECTED UEs", vol. RAN WG1, no. e-Meeting; 20210519 - 20210527, 11 May 2021 (2021-05-11), XP052006216, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_105-e/Docs/R1-2104551.zip R1-2104551.docx> [retrieved on 20210511] *
VIVO: "Remaining Issues on PUSCH Skipping with UCI in Rel-16", vol. RAN WG2, no. electronic; 20210125 - 20210205, 15 January 2021 (2021-01-15), XP051973354, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG2_RL2/TSGR2_113-e/Docs/R2-2100138.zip R2-2100138 Remaining Issues on PUSCH Skipping with UCI in Rel-16.docx> [retrieved on 20210115] *

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