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EP-4740343-A1 - UPLINK CONTROL CHANNEL COVERAGE ENHANCEMENT BEFORE DEDICATED CONFIGURATION

EP4740343A1EP 4740343 A1EP4740343 A1EP 4740343A1EP-4740343-A1

Abstract

This disclosure relates to techniques for performing physical uplink control channel repetitions before dedicated physical uplink control channel resource configuration in a wireless communication system. A wireless device may receive configuration information indicating that physical uplink control channel repetition before dedicated physical uplink control channel resource configuration is supported. The wireless device may perform a physical uplink control channel transmission with repetition before dedicated physical uplink control channel resource configuration based at least in part on the configuration information.

Inventors

  • SUN, HAITONG
  • NIU, HUANING
  • YE, CHUNXUAN
  • ZHANG, DAWEI
  • ZENG, WEI
  • CHEN, XIANG
  • BHAMRI, ANKIT
  • CUI, JIE

Assignees

  • Apple Inc.

Dates

Publication Date
20260513
Application Date
20240809

Claims (20)

  1. 1. A method, comprising: by a wireless device: receiving configuration information indicating that physical uplink control channel (PUCCH) repetition before dedicated PUCCH resource configuration is supported; and performing a PUCCH transmission with repetition before dedicated PUCCH resource configuration based at least in part on the configuration information.
  2. 2. The method of claim 1, wherein the PUCCH transmission with repetition includes hybrid automatic repeat request (HARQ) acknowledgement (ACK) information for a message 4 of a random access channel (RACH) procedure.
  3. 3. The method of claim 1, wherein the PUCCH transmission with repetition is performed after hybrid automatic repeat request (HARQ) acknowledgement (ACK) information is provided for a message 4 of a random access channel (RACH) procedure.
  4. 4. The method of claim 1, wherein PUCCH repetition before dedicated PUCCH resource configuration is supported when physical downlink shared channel scheduling by downlink control information format 1 0 with cyclic redundancy check scrambled by one or more of: cell radio network temporary identifier (C-RNTI); temporary C-RNTI (TC-RNTI); configured scheduling RNTI (CS-RNTI); or modulation and coding scheme C-RNTI (MCS-C-RNTI).
  5. 5. The method of claim 1, wherein PUCCH repetition before dedicated PUCCH resource configuration is supported for one or more of: PUCCH format 0; or PUCCH format 1.
  6. 6. The method of claim 1, wherein the configuration information configures one or more of: slot based PUCCH repetition before dedicated PUCCH resource configuration; or sub-slot based PUCCH repetition before dedicated PUCCH resource configuration.
  7. 7. An apparatus, comprising: a processor configured to cause a wireless device to: receive configuration information indicating that physical uplink control channel (PUCCH) repetition before dedicated PUCCH resource configuration is supported; and perform a PUCCH transmission with repetition before dedicated PUCCH resource configuration based at least in part on the configuration information.
  8. 8. The apparatus of claim 7, wherein the PUCCH transmission is performed in frequency division duplexing (FDD) spectrum, wherein repetitions of the PUCCH transmission are performed in multiple consecutive slots or sub-slots.
  9. 9. The apparatus of claim 7, wherein the PUCCH transmission is performed in time division duplexing (TDD) spectrum, wherein repetitions of the PUCCH transmission are performed in multiple consecutive slots or sub-slots with repetitions omitted when a slot or sub-slot has a duplexing direction conflict.
  10. 10. The apparatus of claim 7, wherein the PUCCH transmission is performed in time division duplexing (TDD) spectrum, wherein repetitions of the PUCCH transmission are performed in multiple consecutive slots or sub-slots that do not have a duplexing direction conflict.
  11. 11. The apparatus of claim 7, wherein the PUCCH transmission is performed in time division duplexing (TDD) spectrum, wherein when a PUCCH transmission slot or sub-slot has a duplexing direction conflict, the processor is further configured to cause the wireless device to perform one of, for the slot or sub-slot with the duplexing direction conflict: omit all symbols in the slot or sub-slot; omit all symbols after a first symbol of the slot or sub-slot with the duplexing direction conflict; or omit only symbols of the slot or sub-slot with the duplexing direction conflict.
  12. 12. The apparatus of claim 7, wherein the PUCCH transmission is performed in time division duplexing (TDD) spectrum, wherein when a PUCCH transmission slot or sub-slot has a duplexing direction conflict, the processor is further configured to cause the wireless device to perform one of, after the slot or sub-slot with the duplexing direction conflict: transmit any following repetitions for the PUCCH transmission without impact from the slot or sub-slot with the duplexing direction conflict; or omit all following repetitions for the PUCCH transmission.
  13. 13. The apparatus of claim 7, wherein the processor is further configured to cause the wireless to: provide wireless device capability information indicating whether the wireless device supports PUCCH repetition before dedicated PUCCH resource configuration for one or more of: PUCCH transmission for responding to a message 4 of a random access channel (RACH) procedure; or PUCCH transmission after responding to a message 4 of a RACH procedure.
  14. 14. A cellular base station, comprising: an antenna; a radio operably coupled to the antenna; and a processor operably coupled to the radio; wherein the cellular base station is configured to: transmit configuration information to a wireless device indicating that physical uplink control channel (PUCCH) repetition before dedicated PUCCH resource configuration is supported; and receive a PUCCH transmission with repetition from the wireless device before dedicated PUCCH resource configuration.
  15. 15. The cellular base station of claim 14, wherein the configuration information further indicates one or more PUCCH repetition values for one or more PUCCH resource indexes for one or both of PUCCH transmission for responding to a message 4 of a random access channel (RACH) procedure or PUCCH transmission after responding to a message 4 of a RACH procedure.
  16. 16. The cellular base station of claim 14, wherein the cellular base station is further configured to: provide downlink control information (DCI) scheduling the PUCCH transmission, wherein the DCI includes a PUCCH resource indicator field that indicates a repetition configuration for the PUCCH transmission.
  17. 17. The cellular base station of claim 14, wherein the configuration information configures PUCCH repetitions for PUCCH transmission for responding to a message 4 of a random access channel (RACH) procedure and for PUCCH transmission after responding to a message 4 of a RACH procedure together.
  18. 18. The cellular base station of claim 14, wherein the configuration information configures PUCCH repetitions for PUCCH transmission for responding to a message 4 of a random access channel (RACH) procedure separately from PUCCH repetitions for PUCCH transmission after responding to a message 4 of a RACH procedure.
  19. 19. The cellular base station of claim 18, wherein the configuration information that configures PUCCH repetitions for PUCCH transmission for responding to a message 4 of a random access channel (RACH) procedure includes configuration parameters for one or more of: number of repetitions; slot or sub-slot based repetition; applicable PUCCH resource(s); or applicable PUCCH format(s), wherein the configuration information that configures PUCCH repetitions for PUCCH transmission after responding to a message 4 of a RACH procedure includes an indication of whether PUCCH repetitions for PUCCH transmission after responding to a message 4 of a RACH procedure is enabled, wherein if PUCCH repetitions for PUCCH transmission after responding to a message 4 of a RACH procedure is enabled, same configuration parameters are used as for PUCCH repetitions for PUCCH transmission for responding to a message 4 of a RACH procedure.
  20. 20. The cellular base station of claim 18, wherein each of the configuration information that configures PUCCH repetitions for PUCCH transmission for responding to a message 4 of a random access channel (RACH) procedure and the configuration information that configures PUCCH repetitions for PUCCH transmission after responding to a message 4 of a RACH procedure includes configuration parameters for one or more of number of repetitions; slot or sub-slot based repetition; applicable PUCCH resource(s); or applicable PUCCH format(s).

Description

UPLINK CONTROL CHANNEL COVERAGE ENHANCEMENT BEFORE DEDICATED CONFIGURATION FIELD [0001] The present application relates to wireless communications, and more particularly to systems, apparatuses, and methods for performing robust uplink control channel transmission before dedicated configuration in a wireless communication system. DESCRIPTION OF THE RELATED ART [0002] Wireless communication systems are rapidly growing in usage. In recent years, wireless devices such as smart phones and tablet computers have become increasingly sophisticated. In addition to supporting telephone calls, many mobile devices (i.e., user equipment devices or UEs) now provide access to the internet, email, text messaging, and navigation using the global positioning system (GPS), and are capable of operating sophisticated applications that utilize these functionalities. Additionally, there exist numerous different wireless communication technologies and standards. Some examples of wireless communication standards include GSM, UMTS (associated with, for example, WCDMA or TD-SCDMA air interfaces), LTE, LTE Advanced (LTE- A), NR, HSPA, 3GPP2 CDMA2000 (e g., IxRTT, IxEV-DO, HRPD, eHRPD), IEEE 802.11 (WLAN or Wi-Fi), BLUETOOTH™, etc. [0003] The ever-increasing number of features and functionality introduced in wireless communication devices also creates a continuous need for improvement in both wireless communications and in wireless communication devices. In particular, it is important to ensure the accuracy of transmitted and received signals through user equipment (UE) devices, e.g., through wireless devices such as cellular phones, base stations and relay stations used in wireless cellular communications. In addition, increasing the functionality of a UE device can place a significant strain on the battery life of the UE device. Thus, it is very important to also reduce power requirements in UE device designs while allowing the UE device to maintain good transmit and receive abilities for improved communications. Accordingly, improvements in the field are desired. SUMMARY [0004] Embodiments are presented herein of apparatuses, systems, and methods for robust uplink control channel transmission before dedicated configuration in a wireless communication system. [0005] According to the techniques described herein, a cellular base station may provide configuration information indicating whether physical uplink control channel repetition is supported before dedicated physical uplink control channel resource configuration is performed. The configuration information may indicate various aspects of the repetition configuration, for example including under which circumstances before dedicated configuration the repetition is supported, and various details of how to perform the repetitions. [0006] Based on the configuration information, a wireless device may perform a physical uplink control channel transmission with repetition before dedicated physical uplink control channel resource configuration is performed for the wireless device. The wireless device may perform such a transmission to respond to (e.g., to acknowledge) a message 4 of a random access channel procedure, and/or for another uplink transmission before dedicated physical uplink control channel resource configuration is performed for the wireless device. [0007] Note that the techniques described herein may be implemented in and/or used with a number of different types of devices, including but not limited to base stations, access points, cellular phones, portable media players, tablet computers, wearable devices, unmanned aerial vehicles, unmanned aerial controllers, automobiles and/or motorized vehicles, and various other computing devices. [0008] This Summary is intended to provide a brief overview of some of the subject matter described in this document. Accordingly, it will be appreciated that the above-described features are merely examples and should not be construed to narrow the scope or spirit of the subject matter described herein in any way. Other features, aspects, and advantages of the subject matter described herein will become apparent from the following Detailed Description, Figures, and Claims. BRIEF DESCRIPTION OF THE DRAWINGS [0009] A better understanding of the present subject matter can be obtained when the following detailed description of various embodiments is considered in conjunction with the following drawings, in which: [0010] Figure 1 illustrates an exemplary (and simplified) wireless communication system, according to some embodiments; [0011] Figure 2 illustrates an exemplary base station in communication with an exemplary wireless user equipment (UE) device, according to some embodiments; [0012] Figure 3 illustrates an exemplary block diagram of a UE, according to some embodiments; [0013] Figure 4 illustrates an exemplary block diagram of a base station, according to some embodiments; [0014] Figure 5 is a flowchart diagram illustrating aspects