Cross-layer quality of service (QoS) indication for sidelink communications
AssigneeIntel Corporation
InventorsAnsab Ali, Sangeetha L. Bangolae, Youn Hyoung Heo
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Abstract
Technologies and techniques associated with cross-layer quality of service (QOS) indication for sidelink communications are provided. In particular, mechanisms to handle priority and/or communication range requirements for medium access control (MAC) protocol data units (PDUs) with multiple logical channels (LCHs) are described. Other technologies and techniques may be described and/or claimed.
Claims14
One or more non-transitory computer-readable media (NTCRM) comprising instructions, wherein execution of the instructions by one or more processors cause a user equipment (UE) to:
- when a medium access control (MAC) protocol data unit (PDU) with data from one or more logical channels (LCHs) has been obtained for a sidelink transmission, identify a four-bit LCH priority of the MAC PDU as a priority value of a highest priority LCH among the one or more LCHs, wherein the four-bit LCH priority is one of a plurality of four-bit LCH priorities;
- identify, based on a 2:1 mapping of the plurality of four-bit LCH priorities to a plurality of three-bit sidelink control information (SCI) priorities, a three-bit SCI priority of the plurality of three-bit SCI priorities of the MAC PDU, wherein the 2:1 mapping is a mapping of two of the plurality of four-bit LCH priorities to a single one of the plurality of three-bit SCI priorities;
- when hybrid automatic repeat request (HARQ) feedback is enabled for groupcast, and when negative-only acknowledgement is to be used for the HARQ feedback, set a communication range requirement to be a longest communication range of the one or more LCHs in the MAC PDU;
- and
- cause the sidelink transmission of the MAC PDU based on the set communication range requirement and the identified SCI priority of the MAC PDU.
One or more non-transitory computer-readable media (NTCRM) comprising instructions of a sidelink hybrid automatic repeat request (HARQ) entity, wherein execution of the instructions by one or more processors is to cause a user equipment (UE) to:
- when a medium access control (MAC) protocol data unit (PDU) with data from one or more logical channels (LCHs) has been obtained for sidelink transmission, identify a four-bit LCH priority of the MAC PDU of a plurality of four-bit LCH priorities;
- set the identified four-bit LCH priority as a priority value of a highest priority LCH among the one or more LCHs;
- identify, based on a 2:1 mapping of the plurality of four-bit LCH priorities to a plurality of three-bit sidelink control information (SCI) priorities, a three-bit SCI priority of the plurality of three-bit SCI priorities of the MAC PDU, wherein the 2:1 mapping is a mapping of two of the plurality of four-bit LCH priorities to a single one of the plurality of three-bit SCI priorities;
- when HARQ feedback is enabled for groupcast, and when negative-only acknowledgement is to be used for the HARQ feedback, set a communication range requirement to be a longest communication range of the LCHs in the MAC PDU;
- and
- provide the MAC PDU to an associated sidelink process for transmission of the MAC PDU according to the communication range requirement and the identified SCI priority of the MAC PDU.
A user equipment (UE) comprising:
- baseband circuitry connected to radiofrequency (RF) circuitry, wherein the baseband circuitry is to:
- when a medium access control (MAC) protocol data unit (PDU) with data from one or more logical channels (LCHs) has been obtained for sidelink transmission, set identify a four-bit LCH priority of the MAC PDU as a priority value of a highest priority LCH among the one or more LCHs;
- identify a 2:1 mapping of a plurality of four-bit LCH priorities to a plurality of three-bit sidelink control information (SCI) priorities, wherein the 2:1 mapping is a mapping of two of the plurality of four-bit LCH priorities to a single one of the plurality of three-bit SCI priorities;
- identify, based on the mapping and the identified four-bit LCH priority, an SCI priority of the plurality of three-bit SCI priorities of the MAC PDU;
- when hybrid automatic repeat request (HARQ) feedback is enabled for groupcast, and when negative-only acknowledgement is to be used for the HARQ feedback, set a communication range requirement to be a longest communication range of the one or more LCHs in the MAC PDU;
- and
- provide the MAC PDU to a physical layer entity for transmission;
- and
- radiofrequency (RF) circuitry connected to the baseband circuitry, wherein the RF circuitry is to transmit the MAC PDU over a sidelink channel based on the set communication range requirement and the identified SCI priority of the MAC PDU.
Dependencies are inferred from the claim text.