CN-116137961-B - Recording information related to multi-event conditional handoff execution for a wireless network

Abstract

According to an example embodiment, a method may include recording, by a user equipment in a wireless network, information related to a multi-event conditional handover execution, wherein the multi-event conditional handover execution is based on joint evaluation of the multi-event by the user equipment, and transmitting, by the user equipment, a report including at least a portion of the information.

Inventors

• I. balan
• A. Awada
• R. Waldhauser
• DECARREAU GUILLAUME
• 1. Weilin

Assignees

• 诺基亚技术有限公司

Dates

Publication Date

20260505

Application Date

20210521

Priority Date

20200521

Claims (20)

1. 1. A method of communication, comprising: Recording, by a user equipment in a wireless network, information related to a multi-event conditional handover execution, wherein the multi-event conditional handover execution is based on joint evaluation of multiple events by the user equipment, and A report comprising at least a portion of the information is sent by the user equipment, wherein the recording comprises at least recording an occurrence of an event related condition, a number of occurrences of the event related condition, or a time or timing of occurrence of the event related condition for one or more of the plurality of events.
2. 2. The method of claim 1, wherein the multi-event conditional switch execution comprises a dual-event conditional switch execution based on a joint evaluation of two events.
3. 3. The method of claim 1, wherein the transmitting comprises: After the user equipment has failed a handover or a radio link, a report comprising at least a part of the information is sent by the user equipment after the user equipment re-establishes a connection to a cell.
4. 4. A method according to claim 3, wherein the transmitting comprises at least one of: Transmitting a report comprising at least part of said information by said user equipment in response to a radio link failure or a handover failure, or A report comprising at least a part of the information is sent by the user equipment in response to a request from a network node.
5. 5. The method of claim 1, wherein the event-related conditions comprise at least one of: The state of the trigger time timer for an event, including a state that is not started, has been started, stopped after start, or expired; an event that satisfies an entry condition for the event; an event that satisfies a departure condition for the event; for the occurrence of a handover failure of the user equipment, or Whether or not an execution condition for the multi-event conditional switch execution is satisfied.
6. 6. The method of claim 1, wherein the multi-event conditional switch execution is based on a plurality of events; Wherein the record includes at least one of: recording information indicating whether an event-related condition has occurred for one or more of the plurality of events; Recording information indicating a number of times an event-related condition has occurred for one or more of the plurality of events; recording a time relationship of event related conditions of at least two events of the plurality of events or a time difference therebetween; recording information indicating a time when an event-related condition has occurred for one or more of the plurality of events; Recording information indicating the event-related conditions for which event occurs first, or The number of handover failures of the user equipment due to the plurality of events not satisfying the execution condition for the multi-event conditional handover execution is recorded.
7. 7. The method of claim 1, wherein the multi-event conditional switch execution is based on a plurality of events; Wherein the recording includes recording information indicating whether an event-related condition has occurred for one or more of the plurality of events.
8. 8. The method of claim 7, wherein the information indicating whether an event-related condition has occurred for one or more of the plurality of events comprises at least one of: recording information indicating which event, if any, has met the entry conditions for the event and starting a trigger time timer; Recording information indicating which event, if any, has met an entry condition for the event, starting a trigger time timer, and expiration of the trigger time timer for the event; Based on the joint evaluation of the multiple events by the user equipment, recording information indicating whether or not an execution condition for conditional handover execution of the multiple events is satisfied; recording information indicating whether a first event having an expired trigger time timer satisfies a leave condition for a second event when the trigger time timer for the first event expires, or Information is recorded indicating which event, if any, satisfies the entry condition of the event, starting its trigger time timer, and the trigger time timer for the event is stopped before expiration.
9. 9. The method of claim 1, wherein the multi-event conditional switch execution is based on a plurality of events; wherein the recording comprises recording information indicating a number of times an event related condition has occurred for one or more of the plurality of events.
10. 10. The method of claim 9, wherein the recording comprising recording information indicating a number of times an event-related condition has occurred for one or more of the plurality of events comprises at least: information is recorded indicating the number of times each event (if any) started its trigger time timer, and the number of times the trigger time timer for the event was stopped before expiration.
11. 11. The method of claim 1, wherein the multi-event conditional switch execution is based on a plurality of events including at least a first event and a second event; Wherein the record comprises at least a record of information indicating a relationship of a first event related condition for the first event relative to a second event related condition for the second event.
12. 12. The method of claim 11, wherein the information indicative of a relationship comprises at least one of: A sequence of the first event related condition for the first event and the second event related condition for the second event; a time between the occurrence of the first event related condition for the first event and the occurrence of the second event related condition for the second event, or The occurrence time of the first event related condition for the first event and the occurrence time of the second event related condition for the second event.
13. 13. The method of claim 11, wherein the record of information indicative of relationships comprises at least one of: Recording whether the first event or the second event firstly meets the entering condition; Recording the values of the trigger time timers of said first event and said second event when one of the trigger time timers is stopped or expired, or Recording a time or period of time when the trigger time timers of the first event and the second event run in parallel.
14. 14. The method of claim 1, wherein the multi-event conditional switch execution is based on a plurality of events; wherein the recording comprises recording information indicating a time when an event related condition has occurred for one or more of the plurality of events.
15. 15. The method of claim 14, wherein the recording comprising recording information indicative of a time when an event-related condition has occurred for one or more of the plurality of events comprises at least one of: recording information indicating a time when a trigger time timer for an event is started; Recording information indicating a time when a trigger time timer for an event expires; recording information indicating the time when the trigger time timer for the event stopped, or Information indicating a time when the trigger time timer for the first event runs in parallel with the trigger time timer for the second event is recorded.
16. 16. The method of claim 1, wherein the multi-event conditional switch execution is based on a plurality of events, wherein the recording comprises: information indicating for which event an event-related condition occurs first is recorded.
17. 17. The method of claim 16, wherein the information indicating for which event an event related condition occurs first comprises at least one of: Recording information indicating which event, if any, satisfies an entry condition for the event and first starting a trigger time timer; recording information indicating which event (if any) the trigger time timer expires first; information is recorded indicating which event, if any, satisfies the entry condition of the event, a trigger time timer is started, and then the trigger time timer is stopped first.
18. 18. The method of claim 1, wherein the multi-event conditional switch execution is based on a plurality of events, including at least a first event and a second event; Wherein the recording includes recording a failure counter that counts a number of failures of the conditional handover of the user equipment due to the plurality of events not satisfying an execution condition for the multi-event conditional handover execution.
19. 19. The method of claim 18, wherein the recording a failure counter comprises recording one or more of the following information if both the first event and the second event are non-dual threshold measurement events: A number of conditional switch failures when the trigger time timer for the first event has not expired, or The number of conditional switch failures when the trigger time timer for the second event has not expired.
20. 20. The method of claim 18, wherein the recording a failure counter comprises recording one or more of the following information if both the first event and the second event are dual threshold measurement events: a number of conditional handover failures when a trigger time timer for the first event has not expired because the source cell measurement is not less than a first threshold; A number of conditional handover failures when a trigger time timer for the second event has not expired because the target cell measurement is not greater than a second threshold; A number of conditional handover failures when the trigger time timer for said second event has not expired due to the source cell measurement value not being less than the first threshold value, or A number of conditional handover failures when the trigger time timer for the first event has not expired because the target cell measurement is not greater than the second threshold.

Description

Recording information related to multi-event conditional handoff execution for a wireless network Technical Field The present description relates to wireless communications. Background A communication system may be a facility capable of communicating between two or more nodes or devices, such as fixed or mobile communication devices. The signals may be carried by a wired or wireless carrier. One example of a cellular communication system is an architecture standardized by the third generation partnership project (3 GPP). Recent developments in this field are often referred to as Long Term Evolution (LTE) of the Universal Mobile Telecommunications System (UMTS) radio access technology. E-UTRA (evolved UMTS terrestrial radio Access) is the air interface for the 3GPP Long Term Evolution (LTE) upgrade path of mobile networks. In LTE, a base station or Access Point (AP), referred to as an enhanced node AP (eNB), provides radio access within a coverage area or cell. In LTE, a mobile device or mobile station is referred to as a User Equipment (UE). LTE has included many improvements or developments. Various aspects of LTE are also continually improving. The 5G New Radio (NR) evolution is part of the continuous mobile broadband evolution process to meet the 5G requirements, similar to the early evolution of 3G and 4G wireless networks. In addition to mobile broadband, 5G is also targeting emerging use cases. The goal of 5G is to significantly improve wireless performance, which may include higher levels of data rate, latency, reliability, and security. The 5G NR can also be extended to efficiently connect to large-scale internet of things (IoT) and can propose new mission critical services. For example, ultra-reliable and low-latency communication (URLLC) devices may require high reliability and very low latency. Disclosure of Invention According to an example embodiment, a method may include recording, by a user equipment in a wireless network, information related to a multi-event conditional handover execution, wherein the multi-event conditional handover execution is based on joint evaluation of the multi-event by the user equipment, and transmitting, by the user equipment, a report including at least a portion of the information. According to another example embodiment, a method may include transmitting, by a network node, a handover command to a user equipment with joint event configuration information including a configuration of multiple events to be evaluated jointly by the user equipment for conditional handover execution, receiving, by the network node, a report including information recorded by the user equipment relating to a failure of the multiple event conditional handover execution of the user equipment, wherein the multiple event conditional handover execution is based on the multiple events, and modifying, by the network node, one or more parameters associated with the configuration of one or more events for the multiple event conditional handover execution based on the report. Other example embodiments are provided or described for each of the example methods, including means for performing any of the example methods, a non-transitory computer-readable storage medium including instructions stored thereon that, when executed by at least one processor, are configured to cause a computing system to perform any of the example methods, and an apparatus including at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least any of the example methods. The details of one or more embodiments are set forth in the accompanying drawings and the description below. Other features will be apparent from the description and drawings, and from the claims. Drawings Fig. 1 is a block diagram of a wireless network according to an example embodiment. Fig. 2 is a flowchart illustrating an operation of a User Equipment (UE) according to an example embodiment. Fig. 3 is a flowchart illustrating operation of a network node (e.g., BS or gNB) according to an example embodiment. Fig. 4 is a schematic diagram illustrating a multi-event Conditional Handoff (CHO) according to an example embodiment. FIG. 5 is a schematic diagram illustrating dual event Conditional Handoff (CHO) execution according to an example embodiment. Fig. 6 is a block diagram of a wireless station or wireless node (e.g., AP, BS, gNB, RAN node, relay node, UE or user equipment or other node) according to an example embodiment. Detailed Description Fig. 1 is a block diagram of a wireless network 130 according to an example embodiment. In the wireless network 130 of fig. 1, user equipment 131, 132, 133, and 135 (which may also be referred to as a Mobile Station (MS) or User Equipment (UE)) may be connected to (and communicate with) a Base Station (BS) 134, which base station 134 may also be referred t