US-12628159-B2 - Uplink transmission repetition with multiple transport blocks

US12628159B2US 12628159 B2US12628159 B2US 12628159B2US-12628159-B2

Abstract

Mechanisms for transmitting a plurality of uplink (UL) transmission block (TB) repetitions associated with a plurality of TBs in a configured grant (CG) resource are provided. In one aspect, a method for multi-TB PUSCH repetition performed by a CE includes determining, based on a first parameter and a second parameter, a number of transport blocks (TBS) for a multi-TB repetition uplink (UL) communication in a configured grant (CG) resource, where the first parameter indicates a first number of TB repetitions, and where the second parameter indicates a second number of TB repetitions. The method further includes transmitting, to a base station (BS) using the CG resource in an unlicensed band, a plurality of TB repetitions based on the determined number of TBs.

Inventors

Shaozhen Guo
Changlong Xu
Jing Sun
Xiaoxia Zhang
Hao Xu
Rajat Prakash
Luanxia YANG
Siyi Chen

Assignees

QUALCOMM INCORPORATED

Dates

Publication Date: 20260512
Application Date: 20210402

Claims (20)

1 . A method for wireless communication using a user equipment (UE), the method comprising: determining, based on a first parameter and a second parameter, a number of transport blocks (TBs) for a multi-TB repetition uplink (UL) communication in a configured grant (CG) resource, wherein the first parameter indicates a number of TB repetitions signaled for transmission by a network entity, and wherein the second parameter indicates a number of TB repetitions actually transmitted by the UE, and wherein the number of TB repetitions actually transmitted by the UE is based on one or more TB repetitions signaled for transmission by the network entity being extended across a slot boundary; and transmitting, to the network entity using the CG resource in an unlicensed band, a plurality of TB repetitions based on the determined number of TBs.
2 . The method of claim 1 , wherein the plurality of TB repetitions includes: a first group of TB repetitions associated with a first TB, and a second group of TB repetitions associated with a second TB different from the first TB, wherein the second group of TB repetitions is contiguous with the first group of TB repetitions.
3 . The method of claim 1 , wherein the determining the number of TBs comprises applying a floor operation to a ratio of the first parameter to the second parameter.
4 . The method of claim 1 , wherein the determining the number of TBs comprises applying a ceiling operation to a ratio of the first parameter to the second parameter.
5 . The method of claim 1 , further comprising: determining an error condition based on a third number of TB repetitions associated with a second CG resource being lower than a fourth number of TB repetitions associated with the second CG resource.
6 . The method of claim 5 , further comprising: receiving an activation for the second CG resource indicating at least the third number of TB repetitions.
7 . The method of claim 1 , further comprising: transmitting, using a second CG resource, one or more TB repetitions associated with a single TB based on a third number of TB repetitions associated with the second CG resource being lower than a fourth number of TB repetitions associated with the second CG resource.
8 . The method of claim 7 , wherein the transmitting the one or more repetitions associated with the single TB comprises: transmitting the third number of TB repetitions based on a presence of an indication of the third number of TB repetitions in a configuration.
9 . The method of claim 7 , wherein the transmitting the one or more repetitions associated with the single TB comprises: transmitting the number of TB repetitions actually transmitted by the UE.
10 . The method of claim 9 , wherein the transmitting the number of TB repetitions actually transmitted by the UE is further based on an absence of any indication of the third number of TB repetitions in a configuration.
11 . The method of claim 1 , wherein the transmitting the plurality of TB repetitions comprises: transmitting one or more nominal TB repetitions and one or more actual TB repetitions.
12 . The method of claim 11 , wherein the transmitting the plurality of TB repetitions comprises: transmitting a configured grant-uplink control information (CG-UCI) indicating a HARQ process identifier (ID) in each of the one or more actual TB repetitions.
13 . The method of claim 11 , wherein the transmitting the plurality of TB repetitions comprises: transmitting a configured grant-uplink control information (CG-UCI) indicating HARQ process identifier (ID) in each of the one or more nominal TB repetitions, wherein the transmitting in each of the one or more nominal TB repetitions comprises: transmitting the CG-UCI in a last actual repetition of the corresponding nominal TB repetition.
14 . A user equipment (UE), comprising: one or more processors configured to: determine, based on a first parameter and a second parameter, a number of transport blocks (TBs) for a multi-TB repetition uplink (UL) communication in a configured grant (CG) resource, wherein the first parameter indicates a number of TB repetitions signaled for transmission by a network entity, and wherein the second parameter indicates a number of TB repetitions actually transmitted by the UE, and wherein the number of TB repetitions actually transmitted by the UE is based on one or more TB repetitions signaled for transmission by the network entity being extended across a slot boundary; and a transceiver coupled with the one or more processors and configured to: transmit, to the network entity using the CG resource in an unlicensed band, a plurality of TB repetitions based on the determined number of TBs.
15 . The UE of claim 14 , wherein the plurality of TB repetitions includes: a first group of TB repetitions associated with a first TB, and a second group of TB repetitions associated with a second TB different from the first TB, wherein the second group of TB repetitions is contiguous with the first group of TB repetitions.
16 . The UE of claim 14 , wherein the one or more processors configured to determine the number of TBs comprises the one or more processors configured to: apply a floor operation to a ratio of the first parameter to the second parameter.
17 . The UE of claim 14 , wherein the one or more processors configured to determine the number of TBs comprises the one or more processors configured to: apply a ceiling operation to a ratio of the first parameter to the second parameter.
18 . The UE of claim 14 , wherein the one or more processors is further configured to: determine an error condition based on a third number of TB repetitions associated with a second CG resource being lower than a fourth number of TB repetitions associated with the second CG resource.
19 . The UE of claim 18 , wherein the one or more processors is further configured to: receive an activation for the second CG resource indicating at least the third number of TB repetitions.
20 . The UE of claim 14 , wherein the transceiver is further configured to: transmit, using a second CG resource, one or more TB repetitions associated with a single TB based on a third number of TB repetitions associated with the second CG resource being lower than a fourth number of TB repetitions associated with the second CG resource.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a 35 U.S.C. 371 National Phase entry of Patent Cooperation Treaty (PCT) Application No. PCT/CN2021/085301, filed Apr. 2, 2021, which is hereby expressly incorporated herein by reference in its entirety. TECHNICAL FIELD The present disclosure is directed to wireless communication systems and methods, and in particular to systems and methods for uplink transmission repetition with multiple transport blocks. INTRODUCTION Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). A wireless multiple-access communications system may include a number of base stations (BSs), each simultaneously supporting communications for multiple communication devices, which may be otherwise known as user equipment (UE). To meet the growing demands for expanded mobile broadband connectivity, wireless communication technologies are advancing from the long term evolution (LTE) technology to a next generation new radio (NR) technology, which may be referred to as 5th Generation (5G). For example, NR is designed to provide a lower latency, a higher bandwidth or a higher throughput, and a higher reliability than LTE. NR is designed to operate over a wide array of spectrum bands, for example, from low-frequency bands below about 1 gigahertz (GHz) and mid-frequency bands from about 1 GHz to about 6 GHz, to high-frequency bands such as millimeter wave (mm Wave) bands. NR is also designed to operate across different spectrum types, from licensed spectrum to unlicensed and shared spectrum. Spectrum sharing enables operators to opportunistically aggregate spectrums to dynamically support high-bandwidth services. Spectrum sharing can extend the benefit of NR technologies to operating entities that may not have access to a licensed spectrum. One approach to providing a high-reliability communication is to use transport block (TB) repetition to transmit an uplink (UL) payload, which may also be referred to as a TB, multiple times. This may increase the chances that the BS successfully receives and/or decodes the payload. To further improve communication reliability, hybrid automatic repeat request (HARQ) techniques can be applied to TB repetition transmission whereby the BS schedules the UE with a retransmission of one or more TBs. BRIEF SUMMARY OF SOME EXAMPLES The following summarizes some aspects of the present disclosure to provide a basic understanding of the discussed technology. This summary is not an extensive overview of all contemplated features of the disclosure and is intended neither to identify key or critical elements of all aspects of the disclosure nor to delineate the scope of any or all aspects of the disclosure. Its sole purpose is to present some concepts of one or more aspects of the disclosure in summary form as a prelude to the more detailed description that is presented later. The present disclosure describes mechanisms for transmitting a plurality of uplink (UL) transmission blocks (TB) repetitions associated with a plurality of TBs in a configured grant (CG) resource. For example, a method for multi-TB repetition may include determining, based on one or more CG configuration parameters, a number of TBs for an UL communication, and transmitting a plurality of TB repetitions based on the determined number of TBs to a base station (BS) in a CG resource. In some aspects, the parameters may include a total number of TB repetitions, a length of each TB repetition (e.g., in symbols), a starting symbol of the first TB repetition, or any other suitable parameter. The mechanisms described herein may also include techniques for determining or indicating a hybrid automatic repeat request (HARQ) process identifier (ID) for each TB, and techniques for requesting and/or performing retransmissions of one or more TBs based on the determined HARQ process IDs. One aspect of the present disclosure includes a method for wireless communication using a user equipment (UE). The method includes determining, based on a first parameter and a second parameter, a number of transport blocks (TBS) for a multi-TB repetition uplink (UL) communication in a configured grant (CG) resource, where the first parameter indicates a first number of TB repetitions, and where the second parameter indicates a second number of TB repetitions. The method also includes transmitting, to a base station (BS) using the CG resource in an unlicensed band, a plurality of TB repetitions based on the determined number of TBs. One aspect of the present disclosure includes a method for wireless communication using a user equipment (UE). The method includes transmitting, to a base station (BS) in a configured grant (CG) resource, a plurality of tr