Search

EP-4290977-B1 - APPARATUS AND METHOD OF WIRELESS COMMUNICATION

EP4290977B1EP 4290977 B1EP4290977 B1EP 4290977B1EP-4290977-B1

Inventors

  • LIN, HUEI-MING

Dates

Publication Date
20260506
Application Date
20200316

Claims (15)

  1. A user equipment, UE, for wireless communication, comprising: a memory; a transceiver; and a processor coupled to the memory and the transceiver; wherein the processor is configured to: control the transceiver to receive, from a base station, a sidelink resource configuration signaling for more than one radio access technology, RAT; and the processor is further configured to: control the transceiver to report to the base station a UE capability, wherein the UE capability comprises a UE cross-RAT capability, the UE cross-RAT capability being configured to use either or both a new radio, NR, RAT and a long term evolution, LTE, RAT for sidelink V2X communication.
  2. The user equipment of claim 1, wherein the processor is configured to control the transceiver to receive, from the base station, an enquiry request related to the UE capability of the UE.
  3. The user equipment of claim 1 or 2, wherein the sidelink resource configuration signaling is conveyed using different system information blocks for different RATs.
  4. The user equipment of any one of claims 1 to 3, wherein the UE capability further comprises a UE inter-RAT capability, the UE inter-RAT capability being configured to perform processing and signaling exchange between a NR RAT and an LTE RAT.
  5. The user equipment of claim 4, wherein an indication of the UE cross-RAT capability configured to use either or both the NR RAT and the LTE RAT for sidelink V2X communication is performed by the transceiver reporting, to the base station, a list of UE supported features along with UE supported frequency bands and band combinations for each RAT.
  6. The user equipment of claim 5, wherein if the list of UE supported features along with UE supported frequency bands and band combinations comprises a frequency band dedicated for vehicle-to-everything, V2X, operation for one RAT, the UE supports sidelink V2X communication on the one RAT.
  7. The user equipment of claim 4, wherein the UE inter-RAT capability comprises a measure of minimum or maximum time duration/offset that takes from a time point the transceiver receives a signaling information in downlink in one RAT module of the UE to a time point the signaling information is passed to another RAT module of the UE.
  8. A method of wireless communication of a user equipment, comprising: receiving, from a base station, a sidelink resource configuration signaling for more than one radio access technology, RAT; wherein the method further comprises: reporting to the base station a UE capability, wherein the UE capability comprises a UE cross-RAT capability, the UE cross-RAT capability being configured to use either or both a new radio, NR, RAT and a long term evolution, LTE, RAT for sidelink V2X communication.
  9. The method of claim 8, further comprising receiving, from the base station, an enquiry request related to the UE capability of the UE.
  10. The method of claim 8 or 9, wherein the sidelink resource configuration signaling is conveyed using different system information blocks for different RATs.
  11. The method of any one of claims 8 to 10, wherein the UE capability further comprises a UE inter-RAT capability, the UE inter-RAT capability being configured to perform processing and signaling exchange between a NR RAT and an LTE RAT.
  12. The method of claim 11, wherein an indication of the UE cross-RAT capability configured to use either or both the NR RAT and the LTE RAT for sidelink V2X communication is performed by the UE reporting, to the base station, a list of UE supported features along with UE supported frequency bands and band combinations for each RAT.
  13. The method of claim 12, wherein if the list of UE supported features along with UE supported frequency bands and band combinations comprises a frequency band dedicated for vehicle-to-everything, V2X, operation for one RAT, the UE supports sidelink V2X communication on the one RAT.
  14. The method of claim 11, wherein the UE inter-RAT capability comprises a measure of minimum or maximum time duration/offset that takes from a time point the UE receives a signaling information in downlink in one RAT module of the UE to a time point the signaling information is passed to another RAT module of the UE.
  15. The method of any one of claims 8 to 14, wherein if the UE is in an RRC connection state, the UE receives, from the base station, the enquiry request related to the UE capability.

Description

BACKGROUND OF DISCLOSURE 1. Field of the Disclosure The present disclosure relates to the field of communication systems, and more particularly, to an apparatus and a method of wireless communication of the same, which can provide good sidelink (SL) system operation performance and saving SL resources. 2. Description of the Related Art In the evolution of vehicle-to-everything (V2X) communication for advancing intelligent transportation systems (ITSs), 3rd generation partnership project (3GPP) in Release 14 developed its first version of direct device-to-device sidelink (SL) wireless communication to support basic V2X services based on 4th generation - long term evolution (4G-LTE) radio access technology (RAT). After that, LTE-V2X is further enhanced in Release 15 to include additional features such as carrier aggregation, SL resource sensing and reporting to an LTE network base station (BS), and etc.. However, due to an inherently long physical layer structure of LTE subframes, and constraints of current resource sensing and selection procedure design in LTE-V2X, 3GPP has turned its focus from further enhancing the current LTE-V2X technologies to developing a brand new sidelink communication technology based on newly released 5th generation - new radio (5G-NR) RAT, namely NR-V2X, in Release 16. Therefore, there is a need for an apparatus and a method of wireless communication of the same, which can provide good sidelink (SL) system operation performance and saving SL resources. QUALCOMM INCORPORATED: "Co-existence aspects for NR-V2X and LTE-V2X", 3GPPDRAFT; Rl-1811268, 29 September 2018, discloses a UE for wireless communication using both LTE V2X and NR V2X. US 2018/219652 AI discloses a system and method of transmitting carrier aggregation capabilities for User Equipment. INTERDIGITAL INC: "MultiRAT CP Aspects in NR V2X", 3GPP DRAFT; R2-1904219, 29March 2019, discloses the impacts of multiRAT operation on system information and cell reselection. INTERDIGITAL INC: "TP to TR 38.885 on MultiRAT CP Aspects in V2X", 3GPP DRAFT; R2-1901577, 15 February 2019, discloses the impacts of multiRAT operation on system information and cell reselection. LG ELECTRONICS INC: "Reporting of Sidelink UE Information for cross-RAT resource allocation", 3GP DRAFT; R2-1905056, 29 March 2019, discloses how to support UE report to assist gNB/eNB scheduling for cross-RAT resource allocation. SUMMARY An object of the present disclosure is to propose an apparatus and a method of wireless communication of the same capable of providing good sidelink (SL) system operation performance and saving SL resources. In a first aspect of the present disclosure, a user equipment for wireless communication includes a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to control the transceiver to receive, from a base station, a sidelink resource configuration signaling for more than one radio access technology (RAT) and control the transceiver to report to the base station a UE capability. The UE capability includes a UE cross-RAT capability. The UE cross-RAT capability is configured to use either or both a new radio, NR, RAT and a long term evolution, LTE, RAT for sidelink V2X communication. In a second aspect of the present disclosure, a method of wireless communication of a user equipment includes receiving, from a base station, a sidelink resource configuration signaling for more than one radio access technology (RAT) and reporting to the base station a UE capability. The UE capability includes a UE cross-RAT capability. The UE cross-RAT capability is configured to use either or both a new radio, NR, RAT and a long term evolution, LTE, RAT for sidelink V2X communication. BRIEF DESCRIPTION OF DRAWINGS In order to more clearly illustrate the embodiments of the present disclosure or related art, the following figures that will be described in the embodiments are briefly introduced. It is obvious that the drawings are merely some embodiments of the present disclosure, a person having ordinary skill in this field can obtain other figures according to these figures. FIG. 1 is an exemplary illustration of a base station controlling a user equipment having an inter-radio access technology (inter-RAT) module communication interface.FIG. 2 is a block diagram of a user equipment (UE) for wireless communication and a base station in a communication network system according to the present disclosure.FIG. 3 is a flowchart illustrating a method of wireless communication of a user equipment according to the present disclosure.FIG. 4 is a flowchart illustrating a method of wireless communication of a base station according to the present disclosure.FIG. 5 is a flowchart illustrating a method of UE reporting cross-RAT sidelink communication and inter-RAT signaling exchange capabilities according to the present disclosure.FIG. 6 is a block diagram of a system for wireless communication according to the