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CN-122029844-A - Indicating parameters associated with radio access network sharing at a cell

CN122029844ACN 122029844 ACN122029844 ACN 122029844ACN-122029844-A

Abstract

Various aspects of the present disclosure relate generally to wireless communications. A User Equipment (UE) may receive a Public Land Mobile Network (PLMN) level Information Element (IE) indicating whether a PLMN associated with a cell supports emergency calls. The PLMNs may be public PLMNs or private PLMNs, both of which may be supported by the cell. The PLMN level IE may indicate a plurality of PLMNs associated with the cell, and for each PLMN, the PLMN level IE may indicate whether the PLMN supports emergency calls or does not support emergency calls. The UE may select a PLMN based on the PLMN level IE. The UE may send signaling to the network node for establishing an emergency call using the PLMN.

Inventors

  • REN YI
  • PANT NITIN
  • DENG JUN
  • GU HEWU
  • U. Puyal

Assignees

  • 高通股份有限公司

Dates

Publication Date
20260512
Application Date
20230928

Claims (20)

  1. 1. An apparatus for wireless communication at a User Equipment (UE), the apparatus comprising: One or more of the memories may be provided, the one or more memories store processor executable code; and One or more processors coupled with the one or more memories, at least one of the one or more processors configured to cause the UE to: receiving a first parameter for a cell via a System Information Block (SIB), wherein the first parameter is a cell-level parameter associated with an internet protocol multimedia subsystem (IMS) emergency call; Receiving a second parameter supporting Radio Access Network (RAN) sharing at the cell via the SIB, wherein the second parameter is a Public Land Mobile Network (PLMN) level parameter associated with an IMS emergency call, and Signaling is sent for establishing an IMS emergency call using one or more of the first parameter or the second parameter.
  2. 2. The apparatus of claim 1, wherein the second parameter is associated with a finer granularity than the first parameter to support the RAN sharing at the cell.
  3. 3. The apparatus of claim 1, wherein: The first parameter is a cell-level IMS emergency support Information Element (IE) indicating whether the cell supports IMS emergency bearer services, and The second parameter is a PLMN level IMS emergency support IE indicating whether a PLMN associated with the cell supports an IMS emergency call.
  4. 4. The apparatus of claim 3, wherein the at least one processor is further configured to cause the UE to: selecting the PLMN according to the PLMN level IMS emergency support IE, and The signaling for establishing the IMS emergency call using the PLMN is sent according to the PLMN level IMS emergency support IE.
  5. 5. The apparatus of claim 3, wherein a field of the PLMN level IMS emergency support IE is set to true in response to the PLMN supporting the IMS emergency call.
  6. 6. The apparatus of claim 3, wherein a field of the PLMN level IMS emergency support IE is set to false in response to the PLMN not supporting the IMS emergency call.
  7. 7. The apparatus of claim 3, wherein the PLMN level IMS emergency support IE is a list of entries, wherein an entry in the list of entries is associated with a PLMN in a PLMN identity list, and the entry indicates whether the PLMN supports the IMS emergency call.
  8. 8. The apparatus of claim 3, wherein the PLMN is a public PLMN associated with the cell or a private PLMN associated with the cell.
  9. 9. The apparatus of claim 1, wherein the cell is a multi-operator core network (MOCN) cell.
  10. 10. The apparatus of claim 1, wherein the SIB is SIB type 1 (SIB 1).
  11. 11. A method of wireless communication performed at a User Equipment (UE), the method comprising: receiving a first parameter for a cell via a System Information Block (SIB), wherein the first parameter is a cell-level parameter associated with an internet protocol multimedia subsystem (IMS) emergency call; Receiving a second parameter supporting Radio Access Network (RAN) sharing at the cell via the SIB, wherein the second parameter is a Public Land Mobile Network (PLMN) level parameter associated with an IMS emergency call, and Signaling is sent for establishing an IMS emergency call using one or more of the first parameter or the second parameter.
  12. 12. The method of claim 11, wherein the second parameter is associated with a finer granularity than the first parameter to support the RAN sharing at the cell.
  13. 13. The method according to claim 11, wherein: The first parameter is a cell-level IMS emergency support Information Element (IE) indicating whether the cell supports IMS emergency bearer services, and The second parameter is a PLMN level IMS emergency support IE indicating whether a PLMN associated with the cell supports an IMS emergency call.
  14. 14. The method of claim 13, wherein the capability associated with using the PLMN level IMS emergency support IE is supported by the UE.
  15. 15. The method of claim 13, wherein the PLMN level IMS emergency support IE is associated with PLMN identity information in the SIB.
  16. 16. An apparatus for wireless communication at a network node, the apparatus comprising: One or more of the memories may be provided, the one or more memories store processor executable code; and One or more processors coupled with the one or more memories, at least one of the one or more processors configured to cause the network node to: Transmitting a first parameter for a cell via a System Information Block (SIB), wherein the first parameter is a cell-level parameter associated with an internet protocol multimedia subsystem (IMS) emergency call; Transmitting via the SIB a second parameter supporting Radio Access Network (RAN) sharing at the cell, wherein the second parameter is a Public Land Mobile Network (PLMN) level parameter associated with an IMS emergency call, and Signaling is received for establishing an IMS emergency call using one or more of the first parameter or the second parameter.
  17. 17. The apparatus of claim 16, wherein the second parameter is associated with finer granularity than the first parameter to support the RAN sharing at the cell.
  18. 18. The apparatus of claim 16, wherein: The first parameter is a cell-level IMS emergency support Information Element (IE) indicating whether the cell supports IMS emergency bearer services, and The second parameter is a PLMN level IMS emergency support IE indicating whether a PLMN associated with the cell supports an IMS emergency call.
  19. 19. The apparatus of claim 18, wherein the capability associated with using the PLMN level IMS emergency support IE is supported by a User Equipment (UE).
  20. 20. The apparatus of claim 18, wherein the PLMN level IMS emergency support IE is associated with PLMN identity information in the SIB.

Description

Indicating parameters associated with radio access network sharing at a cell Technical Field Aspects of the present disclosure relate generally to wireless communications and, in particular, relate to techniques and apparatuses for indicating parameters associated with Radio Access Network (RAN) sharing at a cell. Background Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. A typical wireless communication system may employ multiple-access techniques capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth or transmit power). Examples of such multiple-access techniques include Code Division Multiple Access (CDMA) systems, time Division Multiple Access (TDMA) systems, frequency Division Multiple Access (FDMA) systems, orthogonal Frequency Division Multiple Access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-advanced is an enhanced set of Universal Mobile Telecommunications System (UMTS) mobile standards promulgated by the third generation partnership project (3 GPP). The above multiple access techniques have been employed in various telecommunication standards to provide a common protocol that enables different User Equipment (UEs) to communicate at a city, country, region, or global level. The New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by 3 GPP. NR is designed to better support mobile broadband internet access by using Orthogonal Frequency Division Multiplexing (OFDM) with cyclic prefix (CP-OFDM) on the downlink, CP-OFDM or single carrier frequency division multiplexing (SC-FDM) on the uplink (also known as discrete fourier transform spread OFDM (DFT-s-OFDM) and support beamforming, multiple Input Multiple Output (MIMO) antenna technology and carrier aggregation to improve spectral efficiency, reduce cost, improve services, utilize new spectrum, and integrate better with other open standards. In wireless communication networks, an Internet Protocol (IP) multimedia subsystem (IMS) framework may implement voice, video, and other multimedia services over IP networks. IMS emergency calls may be supported by the IMS framework. An IMS emergency call may be an emergency call routed through an IMS network instead of a non-IMS network. A given cell may or may not support IMS emergency calls. UEs in a cell may be notified whether the cell supports IMS emergency calls. When supported by a cell, the UE may initiate an IMS emergency call in an emergency situation. Disclosure of Invention In some implementations, an apparatus for wireless communication at a User Equipment (UE) includes one or more memories storing processor executable code. The apparatus includes one or more processors coupled with one or more memories. At least one processor of the one or more processors is configured to cause the UE to receive a first parameter for a cell via a System Information Block (SIB), wherein the first parameter is a cell-level parameter associated with an internet protocol multimedia subsystem (IMS) emergency call. At least one processor of the one or more processors is configured to cause the UE to receive, via the SIB, a second parameter shared by a Radio Access Network (RAN) at the supporting cell, wherein the second parameter is a Public Land Mobile Network (PLMN) level parameter associated with the IMS emergency call. At least one processor of the one or more processors is configured to cause the UE to send signaling for establishing an IMS emergency call using one or more of the first parameter or the second parameter. In some implementations, an apparatus for wireless communication at a network node includes one or more memories storing processor executable code. The apparatus includes one or more processors coupled with one or more memories. At least one processor of the one or more processors is configured to cause the network node to transmit a first parameter for a cell via the SIB, wherein the first parameter is a cell level parameter associated with the IMS emergency call. At least one processor of the one or more processors is configured to cause the network node to transmit a second parameter supporting RAN sharing at the cell via the SIB, wherein the second parameter is a PLMN level parameter associated with the IMS emergency call. At least one processor of the one or more processors is configured to cause the network node to receive signaling for establishing an IMS emergency call using one or more of the first parameter or the second parameter. In some implementations, a method of wireless communication performed at a UE includes receiving a first parameter for a cell via a SIB, wherein the first parameter is a cell-level parameter