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US-12627408-B2 - Sidelink retransmission of messages

US12627408B2US 12627408 B2US12627408 B2US 12627408B2US-12627408-B2

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a second user equipment (UE) may receive, from a network node, at least one message, the at least one message comprising at least one of a first common message directed to a first UE or a first private message directed to the first UE. The second UE may decode the at least one message. The second UE may receive, from the network node, a retransmission indication instructing the second UE to transmit, to the first UE, at least one retransmission of the at least one message. The second UE may transmit, to the first UE, the retransmission of the at least one message. Numerous other aspects are described.

Inventors

  • Marwen Zorgui
  • Ahmed Elshafie
  • Muhammad Sayed Khairy Abdelghaffar
  • Ahmed Attia ABOTABL

Assignees

  • QUALCOMM INCORPORATED

Dates

Publication Date
20260512
Application Date
20230406

Claims (20)

  1. 1 . A second user equipment (UE) for wireless communication, comprising: a memory; and one or more processors coupled to the memory and configured to cause the second UE to: receive, from a network node, a plurality of messages, the plurality of messages comprising a common message and a private message directed to a first UE; decode the plurality of messages; receive, from the network node, a retransmission indication instructing the second UE to transmit, to the first UE, at least one retransmission of the plurality of messages; and transmit, to the first UE, the at least one retransmission of the plurality of messages, wherein the common message is retransmitted in accordance with a first delay parameter and the private message is retransmitted in accordance with a second delay parameter, the first delay parameter and the second delay parameter based at least in part on a remaining packet delay budget.
  2. 2 . The second UE of claim 1 , wherein the one or more processors are further configured to cause the second UE to receive, from the network node, a sidelink resource allocation associated with a set of allocated sidelink resources, wherein the one or more processors, to cause the second UE to transmit the at least one retransmission of the plurality of messages, are configured to cause the second UE to transmit the at least one retransmission of the plurality of messages using the set of allocated sidelink resources.
  3. 3 . The second UE of claim 1 , wherein the one or more processors are further configured to cause the second UE to select a set of sidelink resources, wherein the one or more processors, to cause the second UE to transmit the retransmission of the plurality of messages, are configured to cause the second UE to transmit the retransmission of the plurality of messages using the set of sidelink resources.
  4. 4 . The second UE of claim 1 , wherein the network node comprises at least one of a third UE or a programmable logic controller (PLC).
  5. 5 . The second UE of claim 4 , wherein the one or more processors are further configured to cause the second UE to: transmit, to an additional network node, a sidelink resource allocation request; and receive, from the additional network node, a sidelink resource allocation associated with a set of allocated sidelink resources, wherein the one or more processors, to cause the second UE to transmit the retransmission of the plurality of messages, are configured to cause the second UE to transmit the retransmission of the plurality of messages using the set of allocated sidelink resources.
  6. 6 . The second UE of claim 4 , wherein the one or more processors are further configured to cause the second UE to receive, from the network node, a set of selected sidelink resources, wherein the one or more processors, to cause the second UE to transmit the retransmission of the plurality of messages, are configured to cause the second UE to transmit the retransmission of the plurality of messages using the set of selected sidelink resources.
  7. 7 . The second UE of claim 4 , wherein the one or more processors are further configured to cause the second UE to receive, from the first UE, a set of selected sidelink resources, wherein the one or more processors, to cause the second UE to transmit the retransmission of the plurality of messages, are configured to cause the second UE to transmit the retransmission of the plurality of messages using the set of selected sidelink resources.
  8. 8 . The second UE of claim 4 , wherein the one or more processors are further configured to cause the second UE to select a set of selected sidelink resources, wherein the one or more processors, to cause the second UE to transmit the retransmission of the plurality of messages, are configured to cause the second UE to transmit the retransmission of the plurality of messages using the set of selected sidelink resources.
  9. 9 . The second UE of claim 1 , wherein at least one priority is associated with the plurality of messages.
  10. 10 . The second UE of claim 9 , wherein the at least one priority comprises a first priority associated with the common message and a second priority associated with the private message.
  11. 11 . The second UE of claim 9 , wherein the at least one priority comprises a joint priority associated with the first common message and the private message.
  12. 12 . The second UE of claim 9 , wherein the one or more processors are further configured to cause the UE to receive configuration information indicating the at least one priority.
  13. 13 . The second UE of claim 9 , wherein the at least one priority is associated with at least one of a mode 1 sidelink resource allocation operation or a mode 2 resource allocation operation.
  14. 14 . The second UE of claim 9 , wherein the one or more processors, to transmit the retransmission of the plurality of messages, are configured to cause the second UE to transmit at least one of the first-common message or the private message based on the at least one priority.
  15. 15 . The second UE of claim 1 , wherein the one or more processors are further configured to cause the second UE to transmit a retransmission mode indication indicating that the at least one retransmission is to be transmitted by the second UE.
  16. 16 . The second UE of claim 15 , wherein the one or more processors, to cause the second UE to transmit the retransmission mode indication, are configured to cause the second UE to transmit the retransmission mode indication via a PC5 interface.
  17. 17 . The second UE of claim 1 , wherein the one or more processors, to cause the second UE to transmit the retransmission of the plurality of messages, are configured to cause the second UE to transmit the at least one retransmission based on a retransmission mode corresponding to the second UE, wherein the retransmission mode is based on at least one of a priority associated with the plurality of messages or a function of a remaining delay associated with the plurality of messages.
  18. 18 . The second UE of claim 17 , wherein the one or more processors are further configured to cause the second UE to transmit a retransmission mode indication indicating the priority.
  19. 19 . The second UE of claim 1 , wherein the one or more processors, to cause the second UE to transmit the at least one retransmission of the plurality of messages, are configured to cause the second UE to transmit the at least one retransmission based on at least one delay parameter.
  20. 20 . A first user equipment (UE) for wireless communication, comprising: a memory; and one or more processors coupled to the memory and configured to cause the first UE to: receive, from a first network node, a plurality of messages, the plurality of messages comprising a common message and a private message directed to the first UE; and receive, from at least one of the first network node or a second network node and based on a failure, by the first UE, to decode the plurality of messages, at least one retransmission of the plurality of messages, wherein the common message is retransmitted in accordance with a first delay parameter and the private message is retransmitted in accordance with a second delay parameter, the first delay parameter and the second delay parameter based at least in part on a remaining packet delay budget.

Description

FIELD OF THE DISCLOSURE Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for sidelink retransmission of messages. BACKGROUND Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or the like). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP). A wireless network may include one or more network nodes that support communication for wireless communication devices, such as a user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. “Downlink” (or “DL”) refers to a communication link from the network node to the UE, and “uplink” (or “UL”) refers to a communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (SL), a wireless local area network (WLAN) link, and/or a wireless personal area network (WPAN) link, among other examples). The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate on a municipal, national, regional, and/or global level. New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. SUMMARY Some aspects described herein relate to a second user equipment (UE) for wireless communication. The second UE may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive, from a network node, at least one message, the at least one message comprising at least one of a first common message directed to a first UE or a first private message directed to the first UE. The one or more processors may be configured to decode the at least one message. The one or more processors may be configured to receive, from the network node, a retransmission indication instructing the second UE to transmit, to the first UE, at least one retransmission of the at least one message. The one or more processors may be configured to transmit, to the first UE, the retransmission of the at least one message. Some aspects described herein relate to a first UE for wireless communication. The first UE may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive, from a first network node, at least one message, the at least one message comprising at least one of a first common message directed to a first UE or a first private message directed to the first UE. The one or more processors may be configured to receive, from at least one of the first network node or a second network node and based on a failure, by the first UE, to decode the at least one message, at least one retransmission of the at least one message. Some aspects described herein relate to a method of wireless communication performed by a second UE. The method may include receiving, from a network node, at least one message, the at least one message comprising at least one of a first common message directed to a first UE or a first private message directed to the first UE. The method may include decoding the at least one message. The method may include receiving, from the network node, a retransmission indication instructing the second UE to transm