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EP-4098019-B1 - METHOD AND APPARATUS FOR REPORTING DATA TRANSMISSION PROCEDURE FAILURE FOR NETWORK OPTIMIZATION IN A WIRELESS COMMUNICATION SYSTEM

EP4098019B1EP 4098019 B1EP4098019 B1EP 4098019B1EP-4098019-B1

Inventors

  • CHOE, Hyunjung
  • JUNG, SUNGHOON
  • KIM, SANGWON

Dates

Publication Date
20260506
Application Date
20210127

Claims (11)

  1. A method performed by a wireless device in a wireless communication system, the method comprising, receiving, from a network, information for a Preconfigured Uplink Resource, PUR, for data transmission while in idle state or inactive state; receiving, from the network, a report configuration information for data logging; receiving, from the network, information for a threshold value for data transmission based on the PUR; configuring (S1501) a logging validity timer for failure reporting of data transmissions; starting the logging validity timer upon entering into idle state or inactive state; attempting (S1502) one or more data transmissions based on the PUR to the network while in idle state or inactive state; incrementing a counter upon detecting (S1503) a failure of the attempted data transmission based on the PUR; performing the data logging (S1504) based on the report configuration upon detecting the failure of the attempted data transmission only while the logging validity timer is running, wherein logged information includes the (i) information informing that the attempted data transmission is based on the PUR, (ii) information related to the detected failures, and (iii) information related to a number of the counter for the detected failure; establishing or resuming (S1505) a Radio Resource Control, RRC, connection with the network based on the counter being reached to the threshold value; and transmitting (S1506), to the network, the logged information based on the RRC connection.
  2. The method of claim 1, wherein the establishing or resuming (S1505) the RRC connection with the network further comprises, establishing or resuming the RRC connection with the network, based on the counter being reached to the threshold value only while the logging validity timer is running.
  3. The method of claim 1, wherein a value for the logging validity timer is a preconfigured by the wireless device.
  4. The method of claim 1, wherein a value for the logging validity timer is a configured via broadcast or dedicated signalling by the network.
  5. The method of claim 1, wherein a value for the logging validity timer is a fixed value.
  6. The method of claim 1, wherein the method further comprises, transmitting, to the network, a report availability; and receiving, from the network, an uplink information request in response to the report availability, wherein the logged information is transmitted to the network upon receiving the uplink information request.
  7. The method of claim 6, wherein the report availability is transmitted to the network via at least one of Uplink Control Information, UCI, Medium Access Control, MAC, Control Element, CE, or a Radio Resource Control, RRC, message.
  8. The method of claim 1, wherein the method further comprises, stopping the logging validity timer and resetting the counter to zero, upon detecting a successful data transmission based on the PUR.
  9. The method of claim 1, wherein the wireless device is in communication with at least one of a user equipment, a network, or an autonomous vehicle other than the wireless device.
  10. A wireless device (100) in a wireless communication system comprising: a transceiver (106); a memory (104); and at least one processor (102) operatively coupled to the transceiver (106) and the memory (104), and configured to: receive, from a network, information for a Preconfigured Uplink Resource, PUR, for data transmission while in idle state or inactive state; receive, from the network, a report configuration information for data logging; receive, from the network, information for a threshold value for data transmission based on the PUR; configure a logging validity timer for failure reporting of data transmissions; start the logging validity timer upon entering into idle state or inactive state; attempt one or more data transmissions based on the PUR to the network while in idle state or inactive state; increment a counter upon detecting a failure of the attempted data transmission based on the PUR; perform the data logging based on the report configuration upon detecting the failure of the attempted data transmission only while the logging validity timer is running, wherein logged information includes the (i) information informing that the attempted data transmission is based on the PUR, (ii) information related to the detected failures, and (iii) information related to a number of the counter for the detected failure; establish or resume a Radio Resource Control, RRC, connection with the network based on the counter being reached to the threshold value; and transmit, to the network, the logged information based on the RRC connection.
  11. A non-transitory computer-readable medium (104) having stored thereon a plurality of instructions, which, when executed by a processor (102) of a wireless device (100), cause the wireless device (100) to: receive, from a network, information for a Preconfigured Uplink Resource, PUR, for data transmission while in idle state or inactive state; receive, from the network, a report configuration information for data logging; receive, from the network, information for a threshold value for data transmission based on the PUR; configure a logging validity timer for failure reporting of data transmissions; start the logging validity timer upon entering into idle state or inactive state; attempt one or more data transmissions based on the PUR to the network while in idle state or inactive state; increment a counter upon detecting a failure of the attempted data transmission based on the PUR; perform the data logging based on the report configuration upon detecting the failure of the attempted data transmission only while the logging validity timer is running, wherein logged information includes the (i) information informing that the attempted data transmission is based on the PUR, (ii) information related to the detected failures, and (iii) information related to a number of the counter for the detected failure; establish or resume a Radio Resource Control, RRC, connection with the network based on the counter being reached to the threshold value; and transmit, to the network, the logged information based on the RRC connection.

Description

BACKGROUND Technical Field The present disclosure relates to a method and apparatus for reporting data transmission procedure failure for network optimization in a wireless communication system. Related Art 3rd generation partnership project (3GPP) long-term evolution (LTE) is a technology for enabling high-speed packet communications. Many schemes have been proposed for the LTE objective including those that aim to reduce user and provider costs, improve service quality, and expand and improve coverage and system capacity. The 3GPP LTE requires reduced cost per bit, increased service availability, flexible use of a frequency band, a simple structure, an open interface, and adequate power consumption of a terminal as an upper-level requirement. Work has started in international telecommunication union (ITU) and 3GPP to develop requirements and specifications for new radio (NR) systems. 3GPP has to identify and develop the technology components needed for successfully standardizing the new RAT timely satisfying both the urgent market needs, and the more long-term requirements set forth by the ITU radio communication sector (ITU-R) international mobile telecommunications (IMT)-2020 process. Further, the NR should be able to use any spectrum band ranging at least up to 100 GHz that may be made available for wireless communications even in a more distant future. The NR targets a single technical framework addressing all usage scenarios, requirements and deployment scenarios including enhanced mobile broadband (eMBB), massive machine-type-communications (mMTC), ultra-reliable and low latency communications (URLLC), etc. The NR shall be inherently forward compatible. In Rel-13, narrowband internet-of-things (NB-IoT) and LTE for machine-type communication (LTE-M) were standardized to provide wide-area connectivity for IoT. The technologies in Rel-14 evolved beyond the basic functionality specified in Rel-13. In Rel-15, to optimize the support for infrequent small data packet transmissions. For internet-of-things (IOT) user equipment (UE) such as MTC UE and NB-IOT, there are high requirements on the life of battery. Power consumption of wireless device is a key improvement indicator. In the long term evolution (LTE) R-16, one technical requirement is to support uplink transmission in RRC idle mode so that the wireless device could save the power used to enter RRC connected mode. Prior art is found in US 2012/309404 A1 which generally relates to methods and apparatus to perform measurements, in Catt, "Logged MDT in IDLE or INACTIVE mode", R2-1908761, in US 9 743 456 B2 which generally relates to a communication control method, user terminal, processor, storage medium, and base station, in Catt, "Consideration on Beam Level Measurement Result", R2-1905865, and in US 2004/085894 A1 which generally relates to an apparatus for link failure detection on high availability ethernet backplane. SUMMARY Technical Objects Self-optimization process may use performance measurements to automatically adopt neighbour list optimization, and coverage and capacity control, etc. For example, the network may send report configuration via RRC dedicated signalling or System Information for the self-optimization process. If a wireless device has stored measurement result or failure information for report such as RACH report, RLF report, Logged measurement report, and/or Connection establishment fail report, the wireless device may send Report availability in message 5 (Msg5) of a random access process. If the network requests the report via UL Information Request, the wireless device may transmit the requested report via UL Information Response in a connected mode. However, if the wireless device does not transit to a connected mode or does not receive the request for report from the network, the wireless device may discard the reports. In this case, the network could not collect the information to be used for network optimization. Therefore, studies for reporting data transmission procedure failure for network optimization in a wireless communication system are required. Technical Solutions The invention is set out in the independent claims. Preferred embodiments of the invention are set out in the dependent claims. In an aspect, a method performed by a wireless device in a wireless communication system is described. A wireless device performs the data transmissions to a network in idle state and/or inactive state. A wireless device detects failures of the data transmissions. A wireless device logs information related to each of the failures and counts a number of the failures, while the logging validity timer is running. A wireless device establishes or resumes a connection with the network based on that the counted number is equal to or bigger than a threshold value. In another aspect, an apparatus for implementing the above method is provided. Technical Effects The present disclosure can have various advantageous effects. According to