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US-12621879-B2 - Dual-connectivity architecture and setup procedures

US12621879B2US 12621879 B2US12621879 B2US 12621879B2US-12621879-B2

Abstract

A remote UE may detect one or more relay UEs for a dual connectivity configuration for communication with a first network entity and a second network entity. The dual connectivity configuration may include a primary connection with the first network entity and a secondary connection with the second network entity. The remote UE may receive, from the first network entity, a configuration for establishing the secondary connection via one of the one or more relay UEs based on a decision at the first network entity. The remote UE may establish the secondary connection via the one of the one or more relay UEs for communication with the second network entity. The remote UE may configure one or more second bearers for the secondary connection via the one of the one or more relay UEs. The one or more second bearers may support data transmission via the secondary connection.

Inventors

  • Karthika Paladugu
  • Gavin Bernard Horn
  • Hong Cheng
  • Peng Cheng
  • Ozcan Ozturk

Assignees

  • QUALCOMM INCORPORATED

Dates

Publication Date
20260505
Application Date
20210607

Claims (20)

  1. 1 . An apparatus for wireless communication at a remote user equipment (UE), comprising: a memory; and at least one processor coupled to the memory and configured to: detect one or more relay UEs for a secondary connection with a second network entity in a dual connectivity configuration for communication with a first network entity and the second network entity, the dual connectivity configuration including a primary connection with the first network entity and the secondary connection with the second network entity; receive, from the first network entity, a configuration for establishing the secondary connection with the second network entity via one of the one or more relay UEs; establish the secondary connection via the one of the one or more relay UEs for communication with the second network entity based on the received configuration for establishing the secondary connection; and configure one or more second bearers for the secondary connection via the one of the one or more relay UEs, the one or more second bearers supporting data transmission via the secondary connection.
  2. 2 . The apparatus of claim 1 , wherein the primary connection with the first network entity comprises a direct connection or a relayed connection.
  3. 3 . The apparatus of claim 1 , wherein the detection of the one or more relay UEs is based on a list of network entities suitable for the secondary connection.
  4. 4 . The apparatus of claim 3 , wherein the list of network entities suitable for the secondary connection is preconfigured, or is received from the first network entity in a system information block (SIB) or a radio resource control (RRC) message.
  5. 5 . The apparatus of claim 1 , the at least one processor being further configured to: receive, from the first network entity, an indication of dual connectivity.
  6. 6 . The apparatus of claim 1 , the at least one processor being further configured to: transmit, to the first network entity, an indication of the detected one or more relay UEs.
  7. 7 . The apparatus of claim 6 , wherein the indication of the detected one or more relay UEs is transmitted to the first network entity in a radio resource control (RRC) message.
  8. 8 . The apparatus of claim 1 , wherein the configuration for establishing the secondary connection is received from the first network entity in a radio resource control (RRC) message.
  9. 9 . The apparatus of claim 1 , wherein the first network entity is a master node and the second network entity is a secondary node.
  10. 10 . The apparatus of claim 1 , wherein the secondary connection comprises a new local link or a previously existing local link with the one of the one or more relay UEs.
  11. 11 . The apparatus of claim 10 , wherein, if the secondary connection comprises the previously existing link, the at least one processor is further configured to configure the previously existing link to support a relaying capability.
  12. 12 . The apparatus of claim 10 , wherein the new local link or the previously existing local link comprises one of a sidelink, a peer-to-peer communication link, a device-to-device communication link, a Bluetooth link or a Wi-Fi link.
  13. 13 . The apparatus of claim 1 , the at least one processor being further configured to: communicate with the first network entity via one or more first bearers for the primary connection; and communicate with the second network entity via the one or more second bearers for the secondary connection.
  14. 14 . The apparatus of claim 13 , the at least one processor being further configured to: transmit a same protocol data unit (PDU) via one of the one or more first bearers for the primary connection and via one of the one or more second bearers for the secondary connection.
  15. 15 . The apparatus of claim 1 , further comprising a transceiver coupled to the at least one processor.
  16. 16 . A method of wireless communication at a remote user equipment (UE), comprising: detecting one or more relay UEs for a dual connectivity configuration for communication with a first network entity and a second network entity, the dual connectivity configuration including a primary connection with the first network entity and a secondary connection with the second network entity; receiving, from the first network entity, a configuration for establishing the secondary connection via one of the one or more relay UEs; establishing the secondary connection via the one of the one or more relay UEs for communication with the second network entity; and configuring one or more second bearers for the secondary connection via the one of the one or more relay UEs, the one or more second bearers supporting data transmission via the secondary connection.
  17. 17 . An apparatus for wireless communication at a first network entity, comprising: a memory; and at least one processor coupled to the memory and configured to: receive, from a remote user equipment (UE), an indication of one or more relay UEs for a secondary connection with a second network entity in a dual connectivity configuration for communication with the first network entity and the second network entity, the dual connectivity configuration including a primary connection with the first network entity and the secondary connection with the second network entity; select, based at least on the received indication, one of the one or more relay UEs for the secondary connection; transmit, to the second network entity, an indication to prepare the second network entity for the secondary connection with the remote UE via the one of the one or more relay UEs; and transmit, to the remote UE, a configuration for establishing the secondary connection with the second network entity via the one of the one or more relay UEs.
  18. 18 . The apparatus of claim 17 , wherein the primary connection with the remote UE comprises a direct connection or a relayed connection.
  19. 19 . The apparatus of claim 17 , the at least one processor being further configured to: transmit, to the remote UE, a list of network entities suitable for the secondary connection in a system information block (SIB) or a radio resource control (RRC) message.
  20. 20 . The apparatus of claim 17 , the at least one processor being further configured to: transmit, to the remote UE, an indication of the dual connectivity configuration.

Description

CROSS REFERENCE TO RELATED APPLICATION(S) This application is National Stage Application filed under 35 U.S.C. § 371 of PCT International Application Serial No. PCT/CN2021/098548 entitled “DUAL-CONNECTIVITY ARCHITECTURE AND SETUP PROCEDURES” and filed on Jun. 7, 2021, which is expressly incorporated by reference herein in its entirety. TECHNICAL FIELD The present disclosure relates generally to communication systems, and more particularly, to dual connectivity and user equipment (UE)-to-network relays. INTRODUCTION Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies 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, and time division synchronous code division multiple access (TD-SCDMA) systems. These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There exists a need for further improvements in 5G NR technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies. BRIEF SUMMARY The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a remote user equipment (UE). The apparatus may detect one or more relay UEs for a dual connectivity configuration for communication with a first network entity and a second network entity. The dual connectivity configuration may include a primary connection with the first network entity and a secondary connection with the second network entity. The apparatus may receive, from the first network entity, a configuration for establishing the secondary connection via one of the one or more relay UEs. The apparatus may establish the secondary connection via the one of the one or more relay UEs for communication with the second network entity. The apparatus may configure one or more second bearers for the secondary connection via the one of the one or more relay UEs. The one or more second bearers may support data transmission via the secondary connection. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a first network entity. The apparatus may receive, from a remote UE, an indication of one or more relay UEs for a dual connectivity configuration for communication with the first network entity and a second network entity. The dual connectivity configuration may include a primary connection with the first network entity and a secondary connection with the second network entity. The apparatus may select, based at least on the received indication, one of the one or more relay UEs for the secondary connection. The apparatus may prepare the secondary connection with the second network entity for connectivity with the remote UE via the one of the one or more relay UEs. The apparatus may transmit, to the remote UE, a configuration for establishing the secondary connection with the second network entity via the one of the one or more relay UEs. To the accomplishment of the foregoing and related ends, the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrativ