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EP-4108035-B1 - DATA COLLECTION AND PERFORMANCE ENHANCEMENT FOR COMMUNICATION NETWORK

EP4108035B1EP 4108035 B1EP4108035 B1EP 4108035B1EP-4108035-B1

Inventors

  • FANG, JIANMIN
  • HUANG, HE

Dates

Publication Date
20260506
Application Date
20200219

Claims (13)

  1. A wireless communication method, comprising: transmitting, by a communication device, a mobility enhancement related information, wherein in response to an occurrence of a mobility failure when transitioning from a first base station to a second base station, the mobility enhancement related information includes at least one of: a Dual Active Protocol Stack, DAPS, related information, a Conditional Primary secondary cell group cell Addition or Change, CPAC, failure information, or a Conditional Handover, CHO, failure information, and wherein in response to an occurrence of a successful handover when transitioning from the first base station to the second base station, the mobility enhancement related information includes a successful handover related information, wherein the successful handover related information includes a two-step Random Access Channel, RACH, related information that includes an indicator that indicates two-step RACH fallback to four-step RACH related to a beam.
  2. A wireless communication method, comprising: receiving, by a network device, a mobility enhancement related information, wherein in response to an occurrence of a mobility failure when transitioning from a first base station to a second base station, the mobility enhancement related information includes at least one of: a Dual Active Protocol Stack, DAPS, related information, a Conditional Primary secondary cell group cell Addition or Change, CPAC, failure information, or a Conditional Handover, CHO, failure information, and wherein in response to an occurrence of a successful handover when transitioning from the first base station to the second base station, the mobility enhancement related information includes a successful handover related information, wherein the successful handover related information includes a two-step Random Access Channel, RACH, related information that includes an indicator that indicates two-step RACH fallback to four-step RACH related to a beam; and finding a root cause of the mobility failure based on the mobility enhancement related information that is received.
  3. The method of claim 1 or 2, wherein the DAPS related information includes at least one of a Packet Data Convergence Protocol, PDCP, type or an indication whether a maximum number of aggregated carriers are reached.
  4. The method of claim 1 or 2, wherein the CHO failure information includes at least one of a CHO candidate cell identifier, ID, or a CHO failure cause.
  5. The method of claim 1 or 2, wherein the successful handover related information includes a handover type.
  6. The method of claim 1 or 2, wherein the CPAC failure information indicates whether a conditional Primary Secondary cell group Cell, PSCell, change is triggered by a master node or a secondary node.
  7. The method of claim 1 or 2, wherein the CPAC failure information includes at least one of a source base station identifier, a target base station identifier, or a type of trigger node.
  8. The method of claim 1, wherein the two-step RACH related information includes at least one of: indexes of tried beams and number of preambles sent on each tried beam listed in chronological order of attempts, contention detected indication per beam, or list of beam type selected in chronological order per RACH procedure.
  9. The method of claim 8, wherein the beam type includes a synchronization signal block, SSB, and/or a channel state information reference signal, CSI-RS.
  10. The method of claim 1 or 2, wherein the successful handover related information includes a contention detected indication per beam, wherein a contention detection indication for a beam is set as true in response to at least one failed contention resolution being detected on the beam, or wherein the successful handover related information includes an indication to indicate which type of beam is selected per RACH procedure.
  11. The method of claim 1 or 2, wherein the successful handover related information includes indexes of tried beams and a number of preambles sent on each tried beam listed in chronological order of attempts, or wherein the indicator indicate the fallback between 2-step random access channel, RACH, and 4-step RACH per beam, wherein the indicator is set to true in response to the 2-step RACH fallback to the 4-step RACH at least once for a beam during a RACH procedure.
  12. An apparatus for wireless communication comprising a processor, wherein the apparatus is a communication device that is configured to implement the method recited in one or more of claims 1 and 3 to 11 or wherein the apparatus is a network device that is configured to implement the method recited in one or more of claims 2 to 11.
  13. A computer readable program storage medium having code stored thereon, the code, when executed by a processor in a communication device, causing the processor to implement a method recited in one or more of claims 1 and 3 to 11, or when executed by a processor in a network device, causing the processor to implement a method recited in one or more of claims 2 to 11.

Description

TECHNICAL FIELD This disclosure is directed generally to digital wireless communications. BACKGROUND Mobile telecommunication technologies are moving the world toward an increasingly connected and networked society. In comparison with the existing wireless networks, next generation systems and wireless communication techniques will need to support a much wider range of use-case characteristics and provide a more complex and sophisticated range of access requirements and flexibilities. Long-Term Evolution (LTE) is a standard for wireless communication for mobile devices and data terminals developed by 3rd Generation Partnership Project (3GPP). LTE Advanced (LTE-A) is a wireless communication standard that enhances the LTE standard. The 5th generation of wireless system, known as 5G, advances the LTE and LTE-A wireless standards and is committed to supporting higher data-rates, large number of connections, ultra-low latency, high reliability and other emerging business needs. 3GPP Draft R2-1915497, WO 2018/175721 A1, 3GPP Draft R2-1912147, WO 2019/137453 A1 and 3GPP Draft R2-2000656 are related prior art documents. SUMMARY Techniques are disclosed for data collection and/or performance enhancement of a wireless network. A wireless network configuration can be optimized by analyzing the related data reported by a user equipment (UE) or base station (RAN node) to enhance the performance of the wireless network. The invention is specified by the independent claims. Preferred embodiments are defined in the dependent claims. In the following description, although numerous features may be designated as optional, it is nevertheless acknowledged that all features comprised in the independent claims are not to be read as optional BRIEF DESCRIPTION OF THE DRAWING FIG. 1 illustrates an example 5G network architecture.FIG. 2 illustrates a Dual Connectivity (DC) schematic.FIG. 3 shows a measurement reporting signaling procedure.FIG. 4 illustrates an example signaling procedure for early measurement.FIG. 5 illustrates an example signaling procedure for data collection for an invalid early measurement.FIG. 6 illustrates an example signaling procedure for data collection for secondary cell group (SCG) failure and primary SCG Cell (PSCell) being on dormancy Bandwidth Part (BWP).FIG. 7 illustrates an example signaling procedure for data collection for handover failure and being configured with Dual Active Protocol Stack (DAPS) Packet Data Convergence Protocol (PDCP).FIG. 8 illustrates an example signaling procedure for data collection for Conditional PSCell Addition/Change (CPAC) failure.FIG. 9 illustrates an example signaling procedure for data collection for Conditional Handover (CHO) failure.FIG. 10 illustrates an example signaling procedure for data collection for a successful handover.FIG. 11 illustrates an example signaling procedure for data collection for usage of User Equipment (UE) assistant information.FIG. 12 illustrates an example signaling procedure for Quality of Service (QoS) or Quality of Experience (QoE) enhancementFIG. 13A shows an exemplary flowchart for performing a measurement based on a received delay time.FIG. 13B shows an exemplary flowchart for transmitting a report in response to an occurrence of a SCG failure.FIG. 13C shows an exemplary flowchart for processing a report in response to an occurrence of a SCG failure.FIG. 13D shows an exemplary flowchart for transmitting a mobility enhancement related information in response to an occurrence of a handover failure.FIG. 13E shows an exemplary flowchart for transmitting a usage related information for a user equipment (UE) assistant information.FIG. 13F shows an exemplary flowchart for receiving a special QoS parameter.FIG. 13G shows an exemplary flowchart for transmitting a special QoS parameter.FIG. 14 shows an exemplary block diagram of a hardware platform that may be a part of a network node or a communication node or a network. DETAILED DESCRIPTION FIG. 1 illustrates an example 5G network architecture. As shown in FIG. 1, a fifth generation (5G) network architecture may include a 5G core network (5GC) and a next generation radio access network (NG-RAN). The 5GC may include any of an Access Mobility Function (AMF), a Session Management Function (SMF), and a User Plane Function (UPF). NG-RAN may include base stations with different radio access technologies (RATs), such as an evolved 4G base station (ng-eNB), a 5G base station (gNB). The NG-RAN base station may be connected to the 5GC through the NG interface, and the NG-RAN base stations may be connected through the Xn interface. FIG. 2 illustrates a Dual Connectivity (DC) schematic. As shown in FIG. 2, various networks (e.g., 4G and 5G systems) may support Dual Connectivity (DC) functionality. A DC enabled UE may remain connection simultaneously with two base stations, where a first base station may be a Master Node (MN), and a second base station is a Secondary Node (SN). Participation of a DC enab