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CN-121986459-A - On-demand synchronization signal block transmission in a cell

CN121986459ACN 121986459 ACN121986459 ACN 121986459ACN-121986459-A

Abstract

A method can include receiving, by a wireless device, one or more Radio Resource Control (RRC) messages of a configuration of a secondary cell (SCell) from a base station. These messages can include an on-demand synchronization signal block (OD-SSB) configuration of one or more OD-SSBs of the SCell, an initial state of the OD-SSB configuration indicating whether the one or more OD-SSBs were transmitted by the base station at the time of configuration of the SCell, or both the OD-SSB configuration and the initial state of the OD-SSB configuration.

Inventors

  • ZHOU HUA
  • A. C. HILIC
  • E. H. Dinan
  • H. Jean
  • K. Parker
  • R. Keating

Assignees

  • 欧芬诺有限责任公司

Dates

Publication Date
20260505
Application Date
20240920
Priority Date
20230921

Claims (20)

  1. 1. A method, comprising: Receiving, by a wireless device, one or more radio resource control, RRC, messages for configuration of a secondary cell, SCell, wherein the one or more RRC messages comprise at least one of: An SCell status indication indicating whether the SCell is in an active state at the configuration of the SCell; an OD-SSB configuration of one or more on-demand synchronization signal blocks OD-SSB of the SCell, and An initial state of the OD-SSB configuration, the initial state indicating whether the OD-SSB configuration of the SCell is enabled or disabled when the OD-SSB configuration is performed; activating the SCell based on the SCell status indication indicating that the SCell is in an active state upon the configuration of the SCell, and Transmitting a cell measurement report of the SCell for the one or more OD-SSB measurements of the SCell based on enabling the OD-SSB configuration for the SCell based on the initial state.
  2. 2. A method, comprising: Receiving, by the wireless device, one or more radio resource control, RRC, messages for configuration of the secondary cell, SCell, from the base station, wherein the one or more RRC messages include at least one of: An SCell status indication indicating whether the SCell is in an active state at the configuration of the SCell; an OD-SSB configuration of one or more on-demand synchronization signal blocks OD-SSB of the SCell, and An initial state indicating whether the one or more OD-SSBs are transmitted by the base station at the time of the OD-SSB configuration; activating the SCell based on the SCell status indication indicating that the SCell is in an active state upon the configuration of the SCell, and A cell measurement report of the SCell measured by the one or more OD-SSBs of the SCell is transmitted based on the initial state indicating that the one or more OD-SSBs are transmitted.
  3. 3. A method, comprising: Receiving, by a wireless device, one or more radio resource control, RRC, messages for configuration of a secondary cell, SCell, wherein the one or more RRC messages comprise at least one of: An SCell status indication indicating whether the SCell is in an active state at the configuration of the SCell; an OD-SSB configuration of one or more on-demand synchronization signal blocks OD-SSB of the SCell, and An initial state of the OD-SSB configuration of the SCell; activating the SCell based on the SCell status indication indicating that the SCell is in an active state upon the configuration of the SCell, and A cell measurement report of the SCell measured by the one or more OD-SSBs of the SCell is transmitted based on the value of the initial state.
  4. 4. A method, comprising: Receiving, by the wireless device, one or more radio resource control, RRC, messages for configuration of the secondary cell, SCell, from the base station, wherein the one or more RRC messages include at least one of: An SCell status indication indicating whether the SCell is in an active state at the configuration of the SCell; an OD-SSB configuration of one or more on-demand synchronization signal blocks OD-SSB of the SCell, and An initial state of the OD-SSB configuration, the initial state indicating whether the one or more OD-SSBs are transmitted by the base station upon activation of the SCell.
  5. 5. A method, comprising: Receiving, by the wireless device, one or more radio resource control, RRC, messages of a configuration of a secondary cell, SCell, from the base station, the one or more radio resource control, RRC, messages comprising at least one of: an OD-SSB configuration of one or more on-demand synchronization signal blocks OD-SSB of the SCell, and An initial state of the OD-SSB configuration, the initial state indicating whether the one or more OD-SSBs are transmitted by the base station at the time of configuration of the SCell.
  6. 6. The method of any one of claims 1-5, wherein the OD-SSB configuration is associated with one or more parameters included in the one or more RRC messages, the one or more parameters indicating that the OD-SSB is triggered by the base station based on at least one of: The initial state included in the one or more RRC messages, the initial state indicating that the OD-SSB configuration is enabled/activated, and A medium access control element, MAC CE, indicating activation of the OD-SSB configuration.
  7. 7. The method of any one of claims 1 to 6, wherein the one or more parameters included in the one or more RRC messages include at least one of: one or more SSB periodicity values for the one or more OD-SSBs; A subcarrier spacing of the one or more OD-SSBs; The transmission power of the one or more OD-SSB, and The frequency location of the one or more OD-SSBs is indicative.
  8. 8. The method of claim 7, wherein the one or more SSB periodicity values associated with the OD-SSB configuration are different from SSB periodicity values associated with a normally open SSB of the SCell.
  9. 9. The method of any of claims 7-8, wherein the one or more SSB periodicity values associated with the OD-SSB configuration are less than the SSB periodicity values associated with a normally open SSB of the SCell.
  10. 10. The method according to any of claims 1 to 9, wherein the normally open SSB is transmitted by the base station via the SCell at the configuration of the SCell and until the SCell is released or the configuration of the normally open SSB is released by a second RRC message.
  11. 11. The method of any of claims 7 to 10, wherein the one or more SSB periodicity values present in the OD-SSB configuration indicate that the OD-SSB is triggered by the base station.
  12. 12. The method according to any of claims 1 to 11, wherein a frequency location indication is different from a second frequency location indication of the normally open SSB of the SCell, wherein the normally open SSB is transmitted via the SCell and in the frequency resources indicated by the second frequency location indication at the configuration of the SCell.
  13. 13. The method of any of claims 1 to 12, wherein a frequency location indication present in the OD-SSB configuration indicates that the OD-SSB is triggered by the base station.
  14. 14. The method of any one of claims 1 to 13, wherein the one or more RRC messages include a configuration of the normally open SSB of the SCell, wherein the one or more RRC messages include a frequency location indication for the normally open SSB, wherein the normally open SSB is transmitted by the base station after the configuration of the SCell until at least one of: releasing the SCell by a second RRC message, and Releasing the configuration of the normally open SSB by a third RRC message.
  15. 15. The method of any one of claims 1 to 14, wherein the one or more RRC messages include a configuration of the normally open SSB of the SCell, wherein the one or more RRC messages include at least one of: A subcarrier spacing indication for the normally open SSB; the transmission power of the normally open SSB, and The transmission of the normally open SSB is periodic.
  16. 16. The method of any one of claims 1 to 15, wherein the absence of a frequency location indication of the normally open SSB in the one or more RRC messages indicates that the normally open SSB is not configured and is not transmitted on the SCell.
  17. 17. The method according to any of claims 1 to 16, wherein the initial state is applied at/after the configuration of the SCell and before the SCell is activated and/or before receiving a command indicating a state change of the OD-SSB configuration, wherein the absence of the SCell state indication in the one or more RRC messages indicates that the SCell is in a deactivated state at the configuration of the SCell.
  18. 18. The method according to any of claims 1 to 17, wherein the initial state is applied at/after the SCell is configured and activated and/or before receiving a command indicating a state change of the OD-SSB configuration, wherein the presence of the SCell state indication in the one or more RRC messages indicates that the SCell is in an activated state at the configuration of the SCell.
  19. 19. The method of any of claims 1-18, wherein a command indicating the state change of the OD-SSB configuration indicates at least one of: activating the OD-SSB configuration in a deactivated/disabled state prior to receiving the command, and Deactivating the OD-SSB configuration in an active/enabled state prior to receiving the command.
  20. 20. The method of any one of claims 1 to 19, further comprising at least one of: Transmitting a cell measurement report of the SCell measured by the one or more OD-SSBs of the SCell based on one or more parameters of the OD-SSB configuration in the active state in response to the initial state indicating that the one or more OD-SSBs were transmitted at the activation of the SCell, and The method further includes, in response to the initial state indicating that the one or more OD-SSBs are not transmitted at the activation of the SCell, skipping transmission of the cell measurement report.

Description

On-demand synchronization signal block transmission in a cell Cross Reference to Related Applications The present application claims priority from U.S. provisional application 63/539,737 filed on month 21 of 2023, the entire contents of which are hereby incorporated by reference. Drawings Examples of several of the various embodiments of the present disclosure are described herein with reference to the accompanying drawings. Fig. 1A and 1B illustrate an example mobile communication network in which embodiments of the present disclosure may be implemented. Fig. 2A and 2B illustrate a new air interface (NR) user plane and control plane protocol stacks, respectively. Fig. 3 shows an example of services provided between protocol layers of the NR user plane protocol stack of fig. 2A. Fig. 4A shows an example downlink data flow through the NR user plane protocol stack of fig. 2A. Fig. 4B shows an example format of a MAC sub-header in a MAC PDU. Fig. 5A and 5B show the mapping between logical channels, transport channels and physical channels for downlink and uplink, respectively. Fig. 6 is an example diagram illustrating RRC state transitions of a UE. Fig. 7 shows an example configuration of an NR frame into which OFDM symbols are grouped. Fig. 8 shows an example configuration of slots in the time and frequency domains of an NR carrier. Fig. 9 shows an example of bandwidth adaptation using three configured BWPs of NR carriers. Fig. 10A shows three carrier aggregation configurations with two component carriers. Fig. 10B shows an example of how an aggregated cell may be configured into one or more PUCCH groups. Fig. 11A shows an example of SS/PBCH block structure and location. Fig. 11B illustrates an example of CSI-RS mapped in time and frequency domains. Fig. 12A and 12B show examples of three downlink and uplink beam management procedures, respectively. Fig. 13A, 13B and 13C show a four-step contention-based random access procedure, a two-step contention-free random access procedure and another two-step random access procedure, respectively. Fig. 14A shows an example of CORESET configuration of a bandwidth portion. Fig. 14B shows an example of CCE-to-REG mapping for DCI transmission on CORESET and PDCCH processing. Fig. 15 shows an example of a wireless device in communication with a base station. Fig. 16A, 16B, 16C, and 16D illustrate example structures for uplink and downlink transmissions. Fig. 17A, 17B, and 17C illustrate examples of MAC sub-headers. Fig. 18A shows an example of DL MAC PDU. Fig. 18B shows an example of UL MAC PDU. Fig. 19 shows an example of a plurality of LCIDs of the downlink. Fig. 20 shows an example of a plurality of LCIDs of an uplink. Fig. 21A and 21B illustrate examples of SCell activation/deactivation MAC CE formats. Fig. 22 shows an example of BWP activation/deactivation on a cell. Fig. 23 shows examples of various DCI formats. Fig. 24A shows an example of MIB message. Fig. 24B shows an example of the configuration of CORESET 0. Fig. 24C shows an example of the configuration of the search space 0. Fig. 25 shows an example of a SIB1 message. Fig. 26 shows an example of RRC configuration of BWP, PDCCH, and CORESET. Fig. 27 shows an example of RRC configuration of the search space. Fig. 28 illustrates an example of cell inactivity for power saving of a wireless device. Fig. 29 illustrates an example of a DRX configuration for a wireless device. Fig. 30 illustrates an example of DRX operation for a wireless device. Fig. 31A and 31B illustrate examples of wake-up signals and sleep-on signals for power saving of a wireless device. Fig. 32A and 32B illustrate examples of search space cluster group switching for power saving of a wireless device. Fig. 33 shows an example of PDCCH skipping for power saving of a wireless device. Fig. 34 shows an example of activation and deactivation of a cell DTX configuration for network energy saving. Fig. 35 shows an example of PDCCH monitoring occasions for DCI indicating activation/deactivation of a cell DTX configuration for network energy saving. Fig. 36 shows an example of SSB configuration. Fig. 37 shows an example of SSB transmission. Fig. 38 shows an example of SSB transmission. Fig. 39 shows an example of SCell activation delay. Fig. 40 shows an example of a layer 3 beam/cell measurement procedure. Fig. 41 shows an example of a layer 3 measurement configuration. Fig. 42 shows an example of a layer 3 measurement configuration. Fig. 43 shows an example of a layer 3 measurement configuration. Fig. 44 shows an example of a layer 3 measurement configuration. Fig. 45 illustrates an example problem of SSB and/or DRS transmissions in a cell. Fig. 46 illustrates an example embodiment of SSB and/or DRS transmissions in a cell. Fig. 47 shows an example embodiment of SSB and/or DRS transmissions in a cell. Fig. 48 illustrates an example embodiment of SSB and/or DRS transmissions in a cell. Fig. 49 shows an example embodiment of SSB and/or DRS transmissions in