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EP-4736567-A1 - SYSTEM AND METHOD FOR ACTIVE BANDWIDTH PART (BWP) SELECTION

EP4736567A1EP 4736567 A1EP4736567 A1EP 4736567A1EP-4736567-A1

Abstract

The present disclosure is related to a method of selecting at least one bandwidth part for a user equipment (UE) (204) connected to a network (203). The method includes receiving a radio resource control (RRC) connection setup request from the UE (204). The method includes checking an establishment cause associated with the received RRC connection setup request. The method comprises configuring a plurality of bandwidth parts based on the checked establishment cause. The method includes selecting at least one bandwidth part from the plurality of configured bandwidth parts. The method includes allocating, to the UE (204), the at least one selected bandwidth part. The method includes transmitting, to the UE (204), an RRC reconfiguration message comprising the allocated at least one bandwidth part and attaching the UE (204) to the allocated at least one bandwidth part.

Inventors

  • DUTTA, Tushar
  • Kancharlapalli, N L Sairambabu
  • BHATNAGAR, AAYUSH
  • BHATNAGAR, PRADEEP KUMAR

Assignees

  • Jio Platforms Limited

Dates

Publication Date
20260506
Application Date
20240520

Claims (20)

  1. 1. A method (500) of selecting a bandwidth part for a user equipment (UE) (204) connected to a network (203), the method comprising: receiving (502) a radio resource control (RRC) connection setup request from the UE (204); checking (504) an establishment cause associated with the received RRC connection setup request; configuring (506) a plurality of bandwidth parts based on the checked establishment cause; selecting (508) at least one bandwidth part from the plurality of configured bandwidth parts; allocating (510), to the UE (204), the at least one selected bandwidth part; transmitting (512), to the UE (204), a RRC reconfiguration message comprising the allocated at least one bandwidth part; and attaching (514) the UE (204) to the allocated at least one bandwidth part.
  2. 2. The method (500) as claimed in claim 1, wherein the establishment cause includes a plurality of parameters associated with a service requirement of the UE (204).
  3. 3. The method (500) as claimed in claim 2, wherein the plurality of configured bandwidth parts comprises a plurality of bandwidth part characteristics.
  4. 4. The method (500) as claimed in claim 3, further comprising matching the plurality of bandwidth part characteristics with the plurality of parameters.
  5. 5. The method (500) as claimed in claim 4, further comprising ranking the plurality of bandwidth parts based on the matched plurality of bandwidth part characteristics.
  6. 6. The method (500) as claimed in claim 5, further comprising selecting the at least one bandwidth part from the plurality of ranked bandwidth parts.
  7. 7. The method (500) as claimed in claim 6, wherein the at least one selected bandwidth part comprises of at least one bandwidth part characteristic having a maximum match with the plurality of parameters included in the establishment cause.
  8. 8. The method (500) as claimed in claim 2, wherein the plurality of parameters included in the establishment cause comprising one or more of an emergency access, a high priority access, a mobile terminating (MT) access, a mobile originating (MO) signalling, a mobile originating (MO) data, a mobile originated (MO) voice call, a mobile originated (MO) video call, a mobile originated SMS, a multimedia priority service (MPS) priority access, and a mission critical service (MCS) priority access.
  9. 9. The method (500) as claimed in claim 3, wherein the plurality of bandwidth part characteristics comprising one or more of a subcarrier spacing (SCS), load, an aggregation level, a coreset size, interleaved control channel element (CCE) indexes, non-interleaved control channel element (CCE) indexes, and channel report.
  10. 10. The method (500) as claimed in claim 1, further comprising monitoring a channel measurement report of the UE (204) attached to the allocated at least one bandwidth part.
  11. 11. The method (500) as claimed in claim 10, further comprising switching the UE (204) to at least one other ranked bandwidth part based on the monitored channel measurement report.
  12. 12. A system (210) for selecting at least one bandwidth part for a user equipment (UE) (204) connected to a network (203), the system (210) comprising : a receiving unit (212) configured to receive a radio resource control (RRC) connection setup request from the UE (204); a processing unit (214) coupled to the receiving unit (212) and is configured to: check an establishment cause associated with the received RRC connection setup request; configure a plurality of bandwidth parts based on the checked establishment cause; select at least one bandwidth part from the plurality of configured bandwidth parts; allocate, to the UE (204), the at least one selected bandwidth part; transmit, to the UE (204), a RRC reconfiguration message comprising the allocated at least one bandwidth part; and attach the UE (204) to the allocated at least one bandwidth part.
  13. 13. The system (210) as claimed in claim 12, wherein the establishment cause includes a plurality of parameters associated with a service requirement of the UE (204).
  14. 14. The system (210) as claimed in claim 13, wherein the plurality of configured bandwidth parts comprises a plurality of bandwidth part characteristics.
  15. 15. The system (210) as claimed in claim 14, further configured to match the plurality of bandwidth part characteristics with the plurality of parameters.
  16. 16. The system (210) as claimed in claim 15, further configured to rank the plurality of bandwidth parts based on matched plurality of bandwidth part characteristics.
  17. 17. The system (210) as claimed in claim 16, further configured to select the at least one bandwidth part from the plurality of ranked bandwidth parts.
  18. 18. The system (210) as claimed in claim 17, wherein the at least one selected bandwidth part comprises of at least one bandwidth part characteristic having a maximum match with the plurality of parameters included in the establishment cause.
  19. 19. The system (210) as claimed in claim 13, wherein the plurality of parameters included in the establishment cause comprising one or more of an emergency access, a high priority access, a mobile terminating (MT) access, a mobile originating (MO) signalling, a mobile originating (MO) data, a mobile originated (MO) voice call, a mobile originated (MO) video call, a mobile originated SMS, a multimedia priority service (MPS) priority access, and a mission critical service (MCS) priority access.
  20. 20. The system (210) as claimed in claim 14, wherein the plurality of bandwidth part characteristics comprising one or more of a subcarrier spacing (SCS), load, an aggregation level, a coreset size, interleaved control channel element (CCE) indexes, non-interleaved control channel element (CCE) indexes, and channel report.

Description

SYSTEM AND METHOD FOR ACTIVE BANDWIDTH PART (BWP) SELECTION RESERVATION OF RIGHTS [001] A portion of the disclosure of this patent document contains material which is subject to intellectual property rights such as, but are not limited to, copyright, design, trademark, Integrated Circuit (IC) layout design, and/or trade dress protection, belonging to Jio Platforms Limited (JPL) or its affiliates (herein after referred as owner). The owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent files or records, but otherwise reserves all rights whatsoever. All rights to such intellectual property are fully reserved by the owner. TECHNICAL FIELD [002] The present disclosure relates to wireless communications, and specifically to a system and a method for selecting an active Bandwidth Part (BWP) upon receiving a connection setup request. BACKGROUND [003] The following description of related art is intended to provide background information pertaining to the field of the disclosure. This section may include certain aspects of the art that may be related to various features of the present disclosure. However, it should be appreciated that this section be used only to enhance the understanding of the reader with respect to the present disclosure, and not as admissions of prior art. [004] Conventional mechanisms for selecting an active Bandwidth Part (BWP) from multiple available BWPs are inefficient. This is due to nonconsideration of BWP attributes such as Subcarrier Spacing (SCS), load, aggregation level, core set size, interleaved/non-interleaved Control Channel Element (CCE) indexes, and channel report during the selection and may result in an incorrect matching of the active BWP with respect to a service request received from a User Equipment (UE). [005] There is, therefore, a need in the art for an improved mechanism to select the active BWP that best matches the service request based on the BWP attributes. DEFINITION [006] As used in the present disclosure, the following terms are generally intended to have the meaning as set forth below, except to the extent that the context in which they are used to indicate otherwise. [007] The term RRC as used herein, refers to radio resource control. The RRC is a protocol is used in Universal Mobile Telecommunications Service (UMTS), long-term evolution (LTE) and 5G on the air interface. It is a layer 3 (network layer) protocol used between a user equipment (UE) and a base station. [008] The term SCS as used herein, refers to subcarrier spacing. The SCS is the distance between two adjacent subcarriers in an Orthogonal Frequency Division Multiplexing (OFDM) signal. It is a key parameter that affects the bandwidth and performance of a 5G network. [009] The term SSB as used herein, refers to synchronization signal block. The SSB is used by the UE for 5G NR cell search and synchronization. [0010] The term CORESET as used herein refers to the control resource set. The CORESET is a set of physical resources (i.e., a specific area on the NR downlink resource grid) and a set of parameters that are used to carry Physical Downlink Control Channel (PDDCH))/Downlink Channel Indicator (DCI). [0011] The term PUSCH as used herein, refers to Physical Uplink Shared Channel. The E-UTRA PUSCH is the main uplink channel and is used to carry the uplink shared channel (UL-SCH) transport channel. [0012] The term PUCCH, as used herein, refers to the Physical Uplink Control Channel. The PUCCH carries a set of information called Uplink Control Information (UCI). [0013] The term NAS as used herein, refers to non-access stratum. The Non-Access Stratum (NAS) is a functional layer running between the User Equipment (UE) and the Core Network (CN). [0014] The term BWP as used herein, refers to bandwidth part. The BWP is a part of the total channel bandwidth configured for a cell that is used for a UE at a specific moment of operation. OBJECTS OF THE PRESENT DISCLOSURE [0015] It is an object of the present disclosure to select an active Bandwidth Part (BWP) upon receiving a Radio Resource Control (RRC) setup request. [0016] It is an object of the present disclosure to allocate the active BWP to a User Equipment (UE) while considering BWP attributes. [0017] It is an object of the present disclosure to select the active BWP based on either of a BWP subcarrier spacing attribute, an aggregation level attribute, a current load attribute that best matches a requested service. [0018] It is an object of the present disclosure to provide better resource utilization for a wireless network leading to enhanced user experience. [0019] It is an object of the present disclosure to prioritize the BWP attributes based on an establishment cause mentioned in the received RRC setup request. SUMMARY [0020] In an exemplary embodiment, the present invention discloses a method of selecting at least one bandwidth pa