US-12621702-B2 - Configuration, activation and deactivation of packet duplication

Abstract

Certain aspects of the present disclosure provide techniques for determining a configuration for packet data convergence protocol (PDCP) duplication. Certain aspects provide a method for wireless communication. The method generally includes determining a PDCP duplication configuration corresponding to at least one of multi-connectivity (MC) or carrier-aggregation (CA) for communication of at least one bearer with a user-equipment (UE), wherein the determination is based on an indication corresponding to a link quality for the communication, and sending an indication of the determined configuration for the communication of the at least one bearer.

Inventors

• Vinay JOSEPH
• Luis Fernando Brisson LOPES
• Gavin Bernard Horn
• Peerapol Tinnakornsrisuphap
• Yu-Ting YU

Assignees

• QUALCOMM INCORPORATED

Dates

Publication Date

20260505

Application Date

20211227

Claims (16)

1. 1 . A method for wireless communication by a central unit (CU), comprising: receiving, at the CU from another CU, a request to activate a downlink (DL) packet data convergence protocol (PDCP) duplication configuration; receiving one or more link quality measurements from the another CU, via a measurement report received from the another CU via a radio resource control (RRC) transfer, via an X2 interface message, or via an Xn interface message, wherein the one or more link quality measurements include at least one of channel quality indicator (CQI) or signal strength measurements; determining the DL PDCP duplication configuration corresponding to multi-connectivity (MC) for communication of at least one bearer with a UE, wherein the determination is based on the request from the another CU and the one or more link quality measurements; and sending an indication of the determined DL PDCP duplication configuration for the communication of the at least one bearer.
2. 2 . The method of claim 1 , further comprising: receiving one or more of a plurality of measurement reports sent to the CU by the UE; or receiving a request, from the UE, for the DL PDCP duplication configuration for the at least one bearer.
3. 3 . The method of claim 1 , wherein the determination is further based on at least one of whether: MC is configured for the UE; MC is allowed for the UE; PDCP duplication is configured for the at least one bearer; PDCP duplication is activated for the at least one bearer; PDCP duplication is deactivated for the at least one bearer; the at least one bearer is a master cell group (MCG) bearer; the CU is associated with the MCG of the at least one bearer; the at least one bearer is a secondary cell group (SCG) bearer; the CU is associated with the SCG of the at least one bearer; or the at least one bearer comprises a split bearer.
4. 4 . The method of claim 1 , wherein the DL PDCP duplication configuration is further determined based on historical data, wherein the historical data comprises at least one of: historical link quality measurements; or historical records indicating success of different PDCP duplication configurations, the different PDCP duplication configurations comprising the determined DL PDCP duplication configuration.
5. 5 . The method of claim 4 , wherein the determination is further based on a mobility pattern of the UE.
6. 6 . The method of claim 4 , wherein the determination comprises determining a current mobility phase of the UE, and determining success of the determined DL PDCP duplication configuration for the current mobility phase based on the historical data.
7. 7 . The method of claim 1 , wherein the request to activate the DL PDCP duplication configuration is received via an Xn interface between the CU and the another CU.
8. 8 . The method of claim 1 , wherein the indication of the determined DL PDCP duplication configuration is sent to a distributed unit (DU).
9. 9 . An apparatus for wireless communication by a central unit (CU), comprising: a processing system configured to: receive, at the CU from another CU, a request to activate a downlink (DL) packet data convergence protocol (PDCP) duplication configuration; receive one or more link quality measurements from the another CU, via a measurement report received from the another CU via a radio resource control (RRC) transfer, via an X2 interface message, or via an Xn interface message, wherein the one or more link quality measurements include at least one of channel quality indicator (CQI) or signal strength measurements; determine the DL PDCP duplication configuration corresponding to multi-connectivity (MC) for communication of at least one bearer with a UE, wherein the determination is based on the request from the another CU and the one or more link quality measurements; and send an indication of the determined DL PDCP duplication configuration for the communication of the at least one bearer; and a memory coupled to the processing system.
10. 10 . The apparatus of claim 9 , wherein the processing system is further configured to: receive one or more of a plurality of measurement reports sent to the CU by the UE; or receive a request, from the UE, for the DL PDCP duplication configuration for the at least one bearer.
11. 11 . The apparatus of claim 9 , wherein the processing system is configured to determine the DL PDCP duplication configuration based on at least one of whether: MC is configured for the UE; MC is allowed for the UE; PDCP duplication is configured for the at least one bearer; PDCP duplication is activated for the at least one bearer; PDCP duplication is deactivated for the at least one bearer; the at least one bearer is a master cell group (MCG) bearer; the CU is associated with the MCG of the at least one bearer; the at least one bearer is a secondary cell group (SCG) bearer; the CU is associated with the SCG of the at least one bearer; or the at least one bearer comprises a split bearer.
12. 12 . The apparatus of claim 9 , wherein the DL PDCP duplication configuration is further determined based on historical data, wherein the historical data comprises at least one of: historical link quality measurements; or historical records indicating success of different PDCP duplication configurations, the different PDCP duplication configurations comprising the determined DL PDCP duplication configuration.
13. 13 . The apparatus of claim 12 , wherein the determination is further based on a mobility pattern of the UE.
14. 14 . The apparatus of claim 12 , wherein the determination comprises determining a current mobility phase of the UE, and determining success of the determined DL PDCP duplication configuration for the current mobility phase based on the historical data.
15. 15 . A non-transitory computer-readable medium having instructions stored thereon to cause a central unit (CU) to: receive, at the CU from another CU, a request to activate a downlink (DL) packet data convergence protocol (PDCP) duplication configuration; receive one or more link quality measurements from the another CU, via a measurement report received from the another CU via a radio resource control (RRC) transfer, via an X2 interface message, or via an Xn interface message, wherein the one or more link quality measurements include at least one of channel quality indicator (CQI) or signal strength measurements; determine the DL PDCP duplication configuration corresponding to multi-connectivity (MC) for communication of at least one bearer with a UE, wherein the determination is based on the request from the another CU and the one or more link quality measurements; and send an indication of the determined DL PDCP duplication configuration for the communication of the at least one bearer.
16. 16 . An apparatus for wireless communication by a central unit (CU), comprising: means for receiving, at the CU from another CU, a request to activate a downlink (DL) packet data convergence protocol (PDCP) duplication configuration; means for receiving one or more link quality measurements from the another CU, via a measurement report received from the another CU via a radio resource control (RRC) transfer, via an X2 interface message, or via an Xn interface message, wherein the one or more link quality measurements include at least one of channel quality indicator (CQI) or signal strength measurements; means for determining the DL PDCP duplication configuration corresponding to multi-connectivity (MC) for communication of at least one bearer with a UE, wherein the determination is based on the request from the another CU and the one or more link quality measurements; and means for sending an indication of the determined DL PDCP duplication configuration for the communication of the at least one bearer.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. application Ser. No. 16/273,827, filed Feb. 12, 2019, which claims benefit of U.S. Provisional Patent Application Ser. No. 62/631,052, filed Feb. 15, 2018, which are both expressly incorporated herein by reference in their entireties. BACKGROUND Field of the Disclosure Aspects of the present disclosure relate generally to wireless communications systems, and more particularly, to packet duplication. Description of Related Art Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts, etc. These systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth and transmit power). Examples of such multiple-access systems include 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, LTE Advanced (LTE-A) systems, 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. In some examples, a wireless multiple-access communication system may include a number of base stations (BSs) that each can simultaneously support communication for multiple communication devices, otherwise known as user equipment (UEs). In LTE or LTE-A network, a set of one or more BSs may define an e NodeB (eNB). In other examples (e.g., in a next generation, new radio (NR), or 5G network), a wireless multiple access communication system may include a number of distributed units (DUs) (e.g., edge units (EUs), edge nodes (ENs), radio heads (RHs), smart radio heads (SRHs), transmission reception points (TRPs), etc.) in communication with a number of central units (CUs) (e.g., central nodes (CNs), access node controllers (ANCs), etc.), where a set of one or more distributed units, in communication with a central unit, may define an access node (e.g., a NR BS, a NR NB, a network node, a 5G NB, a next generation NB (gNB), etc.). A BS or DU may communicate with a set of UEs on downlink channels (e.g., for transmissions from a base station or to a UE) and uplink channels (e.g., for transmissions from a UE to a BS or DU). 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. NR (e.g., 5G radio access) is an example of an emerging telecommunication standard. NR is a set of enhancements to the LTE mobile standard promulgated by 3GPP. It is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using OFDMA with a cyclic prefix (CP) on the downlink (DL) and on the uplink (UL) as well as support beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. However, as the demand for mobile broadband access continues to increase, there exists a need for further improvements in NR and LTE technology. Preferably, these improvements should be applicable to other multi-access technologies and the telecommunication standards that employ these technologies. BRIEF SUMMARY The systems, methods, and devices of the disclosure each have several aspects, no single one of which is solely responsible for its desirable attributes. Without limiting the scope of this disclosure as expressed by the claims which follow, some features will now be discussed briefly. After considering this discussion, and particularly after reading the section entitled “Detailed Description” one will understand how the features of this disclosure provide advantages that include improved communications between access points and stations in a wireless network. Certain aspects of the present disclosure provide techniques for determining a configuration for packet data convergence protocol (PDCP) duplication. Certain aspects provide a method for wireless communication. The method generally includes determining a PDCP duplication configuration corresponding to at least one of multi-connectivity (MC) or carrier-aggregation (CA) for communication of at least one bearer with a user-equipment (UE), wherein the determination is based on an indication corresponding to a link quality for the communication, and sending an indication of the determined configuration for the communication of the at least one bearer. Certain aspects provide an apparatus for wireless communication. The apparatus generally includes a processing system configured to determine a PDCP duplicatio