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US-12627417-B2 - Multiple cells scheduling with hybrid automatic repeat request

US12627417B2US 12627417 B2US12627417 B2US 12627417B2US-12627417-B2

Abstract

A wireless device receives downlink control information (DCI) scheduling a first transport block via a first cell and a second transport block via a second cell. The DCI also comprises a hybrid automatic repeat request (HARQ) process number. The wireless device decodes the first transport block, received via the first cell, based on a first HARQ process identified by the HARQ process number and decodes the second transport block, received via the second cell, based on the first HARQ process and an offset value.

Inventors

  • Kai Xu
  • Hua Zhou
  • Esmael Hejazi Dinan
  • Ali Cagatay Cirik
  • Hyoungsuk Jeon

Assignees

  • OFINNO, LLC

Dates

Publication Date
20260512
Application Date
20230627

Claims (20)

  1. 1 . A wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device to: receive downlink control information: scheduling a first transport block via a first cell and a second transport block via a second cell; and comprising a hybrid automatic repeat request (HARQ) process number for a first HARQ process and the first cell; receive a medium access control control element (MAC CE) indicating an offset value based on an identifier of the second cell; determine a second HARQ process, for the second transport block, identified based on the HARQ process number for the first HARQ process and the offset value; and decode: the first transport block, received via the first cell, based on the first HARQ process identified by the HARQ process number; and the second transport block, received via the second cell, based on the second HARQ process.
  2. 2 . The wireless device of claim 1 , wherein the second transport block is decoded based on a summation of the HARQ process number and the offset value.
  3. 3 . The wireless device of claim 1 , wherein the first transport block is different from the second transport block.
  4. 4 . The wireless device of claim 1 , wherein the instructions further cause the wireless device to determine the first HARQ process based on the HARQ process number.
  5. 5 . The wireless device of claim 4 , wherein the instructions further cause the wireless device to determine a HARQ process identity (ID), of the first HARQ process, equal to the HARQ process number.
  6. 6 . The wireless device of claim 4 , wherein the instructions further cause the wireless device to determine a HARQ process ID, of the second HARQ process, equal to the HARQ process number plus the offset value.
  7. 7 . The wireless device of claim 4 , wherein the instructions further cause the wireless device to determine the second HARQ process using a modulo operation based on a summation of the HARQ process number, the offset value, and a maximum number of HARQ processes.
  8. 8 . The wireless device of claim 1 , wherein the downlink control information comprises a bitfield indicating the HARQ process number.
  9. 9 . The wireless device of claim 1 , wherein the instructions further cause the wireless device to: receive a configuration parameter indicating a plurality of cells; and receive the medium access control control element indicating a subset of cells from the plurality of cells, wherein the subset of cells comprises the first cell and the second cell.
  10. 10 . A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to: receive downlink control information: scheduling a first transport block via a first cell and a second transport block via a second cell; and comprising a hybrid automatic repeat request (HARQ) process number for a first HARQ process and the first cell; receive a medium access control control element (MAC CE) indicating an offset value based on an identifier of the second cell; determine a second HARQ process, for the second transport block, identified based on the HARQ process number for the first HARQ process and the offset value; and decode: the first transport block, received via the first cell, based on the first HARQ process identified by the HARQ process number; and the second transport block, received via the second cell, based on the second HARQ process and an offset value.
  11. 11 . The non-transitory computer-readable medium of claim 10 , wherein the second transport block is decoded based on a summation of the HARQ process number and the offset value.
  12. 12 . The non-transitory computer-readable medium of claim 10 , wherein the first transport block is different from the second transport block.
  13. 13 . The non-transitory computer-readable medium of claim 10 , wherein the instructions further cause the wireless device to determine the first HARQ process based on the HARQ process number.
  14. 14 . The non-transitory computer-readable medium of claim 13 , wherein the instructions further cause the wireless device to determine a HARQ process identity (ID), of the first HARQ process, equal to the HARQ process number.
  15. 15 . The non-transitory computer-readable medium of claim 13 , wherein the instructions further cause the wireless device to determine a HARQ process ID, of the second HARQ process, equal to the HARQ process number plus the offset value.
  16. 16 . The non-transitory computer-readable medium of claim 13 , wherein the instructions further cause the wireless device to determine the second HARQ process using a modulo operation based on a summation of the HARQ process number, the offset value, and a maximum number of HARQ processes.
  17. 17 . The non-transitory computer-readable medium of claim 10 , wherein the downlink control information comprises a bitfield indicating the HARQ process number.
  18. 18 . The non-transitory computer-readable medium of claim 10 , wherein the instructions further cause the wireless device to: receive a configuration parameter indicating a plurality of cells; and receive the medium access control control element indicating a subset of cells from the plurality of cells, wherein the subset of cells comprises the first cell and the second cell.
  19. 19 . A method, comprising: receiving, by a wireless device, downlink control information: scheduling a first transport block via a first cell and a second transport block via a second cell; and comprising a hybrid automatic repeat request (HARQ) process number for a first HARQ process and the first cell; receiving a medium access control control element (MAC CE) indicating an offset value based on an identifier of the second cell; determining a second HARQ process, for the second transport block, identified based on the HARQ process number for the first HARQ process and the offset value; and decoding: the first transport block, received via the first cell, based on the first HARQ process identified by the HARQ process number; and the second transport block, received via the second cell, based on the second HARQ process.
  20. 20 . The method of claim 19 , further comprising determining the first HARQ process based on the HARQ process number.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of U.S. Provisional Application No. 63/356,822, filed Jun. 29, 2022, which is hereby incorporated by reference in its entirety. BRIEF DESCRIPTION OF THE DRAWINGS Examples of several of the various embodiments of the present disclosure are described herein with reference to the drawings. FIG. 1A and FIG. 1B illustrate example mobile communication networks in which embodiments of the present disclosure may be implemented. FIG. 2A and FIG. 2B respectively illustrate a New Radio (NR) user plane and control plane protocol stack. FIG. 3 illustrates an example of services provided between protocol layers of the NR user plane protocol stack of FIG. 2A. FIG. 4A illustrates an example downlink data flow through the NR user plane protocol stack of FIG. 2A. FIG. 4B illustrates an example format of a MAC subheader in a MAC PDU. FIG. 5A and FIG. 5B respectively illustrate a mapping between logical channels, transport channels, and physical channels for the downlink and uplink. FIG. 6 is an example diagram showing RRC state transitions of a UE. FIG. 7 illustrates an example configuration of an NR frame into which OFDM symbols are grouped. FIG. 8 illustrates an example configuration of a slot in the time and frequency domain for an NR carrier. FIG. 9 illustrates an example of bandwidth adaptation using three configured BWPs for an NR carrier. FIG. 10A illustrates three carrier aggregation configurations with two component carriers. FIG. 10B illustrates an example of how aggregated cells may be configured into one or more PUCCH groups. FIG. 11A illustrates an example of an SS/PBCH block structure and location. FIG. 11B illustrates an example of CSI-RSs that are mapped in the time and frequency domains. FIG. 12A and FIG. 12B respectively illustrate examples of three downlink and uplink beam management procedures. FIG. 13A, FIG. 13B, and FIG. 13C respectively illustrate a four-step contention-based random access procedure, a two-step contention-free random access procedure, and another two-step random access procedure. FIG. 14A illustrates an example of CORESET configurations for a bandwidth part. FIG. 14B illustrates an example of a CCE-to-REG mapping for DCI transmission on a CORESET and PDCCH processing. FIG. 15 illustrates an example of a wireless device in communication with a base station. FIG. 16A, FIG. 16B, FIG. 16C, and FIG. 16D illustrate example structures for uplink and downlink transmission. FIG. 17 illustrates a downlink control information schedules one or more transport blocks via a cell as per an aspect of an example embodiment of the present disclosure. FIG. 18 illustrates a format of DCI indicating HARQ process number as per an aspect of an example embodiment of the present disclosure. FIG. 19 illustrates a downlink control information schedules one or more transport blocks via a plurality of cells as per an aspect of an example embodiment of the present disclosure. FIG. 20 illustrates a format of DCI indicating HARQ process numbers for a plurality of cells as per an aspect of an example embodiment of the present disclosure. FIG. 21 illustrates determinations of HARQ processes for a plurality of cells scheduled by a DCI as per an aspect of an example embodiment of the present disclosure. FIG. 22 illustrates determinations of HARQ processes for a plurality of cells scheduled by a DCI as per an aspect of an example embodiment of the present disclosure. FIG. 23 illustrates determinations of HARQ processes for a plurality of cells scheduled by a DCI as per an aspect of an example embodiment of the present disclosure. FIG. 24 illustrates determinations of HARQ processes for a plurality of cell groups scheduled by a DCI as per an aspect of an example embodiment of the present disclosure. FIG. 25 illustrates cells selection by a MAC CE as per an aspect of an example embodiment of the present disclosure. FIG. 26 illustrates a format of a MAC CE for cells selection as per an aspect of an example embodiment of the present disclosure. FIG. 27 illustrates a flow diagram of determinations of HARQ processes for a plurality of cells scheduled by a DCI as per an aspect of an example embodiment of the present disclosure. DETAILED DESCRIPTION In the present disclosure, various embodiments are presented as examples of how the disclosed techniques may be implemented and/or how the disclosed techniques may be practiced in environments and scenarios. It will be apparent to persons skilled in the relevant art that various changes in form and detail can be made therein without departing from the scope. In fact, after reading the description, it will be apparent to one skilled in the relevant art how to implement alternative embodiments. The present embodiments should not be limited by any of the described exemplary embodiments. The embodiments of the present disclosure will be described with reference to the accompanying drawings. Limitations, features, an