US-12628024-B2 - Quality of experience measurements for mobility robustness

US12628024B2US 12628024 B2US12628024 B2US 12628024B2US-12628024-B2

Abstract

Methods, systems, and devices for wireless communications are described. A communication link between the UE and a serving base station may be established. The UE may measure, at an application layer of the UE, a set of quality of experience variables associated with different service types. The UE may measure, at an access stratum of the UE, a set of radio resource management variables associated with the communication link between the UE and the serving base station and a communication link between the UE and a corresponding set of one or more neighboring base stations associated with the communication links. The UE may transmit a measurement report to the serving base station indicating information associated with the quality of experience variables and the radio resource management variables in a multi-layer readable format.

Inventors

Rajeev Kumar
Xipeng Zhu
Shankar Krishnan
Gavin Bernard Horn

Assignees

QUALCOMM INCORPORATED

Dates

Publication Date: 20260512
Application Date: 20231113

Claims (20)

1 . A serving network device, comprising: one or more memories storing processor-executable code; and one or more processors coupled with the one or more memories and operable to execute the code to cause the serving network device to: establish a first communication link with a user equipment (UE); receive a measurement report from the UE indicating information associated with a set of quality of experience variables and a set of radio resource management variables in a multi-layer readable format, wherein the set of quality of experience variables is associated with at least two different service types and with an application layer at the UE, and wherein the set of radio resource management variables is associated with the first communication link between the UE and the serving network device and a second communication link between the UE and a neighboring network device and with an access stratum layer at the UE; and adjust, in response to the measurement report, the first communication link between the UE and the serving network device.
2 . The serving network device of claim 1 , wherein the one or more processors are further operable to execute the code to cause the serving network device to: transmit a measurement request to the UE indicating quality of experience variables to include in the set of quality of experience variables, wherein the measurement report indicating the set of quality of experience variables is received in response to the measurement request.
3 . The serving network device of claim 1 , wherein, to adjust the first communication link, the one or more processors are operable to execute the code to cause the serving network device to: perform, based at least in part on the set of quality of experience variables, a handover procedure of the UE from the serving network device to a target network device for the UE to establish a new communication link with the target network device.
4 . The serving network device of claim 3 , wherein the one or more processors are further operable to execute the code to cause the serving network device to: determine that the set of quality of experience variables fail to satisfy a threshold; transmit a resource status request to a set of one or more target network devices comprising the target network device indicated in the measurement report, the resource status request indicating a quality of experience constraint of the UE and the set of quality of experience variables of the UE; receive a resource status response from the target network device indicating support of the quality of experience constraint of the UE; and transmit, based at least in part on the resource status response, a connection reconfiguration message to the UE identifying the target network device to perform the handover procedure to establish the new communication link.
5 . The serving network device of claim 4 , wherein the one or more processors are further operable to execute the code to cause the serving network device to: receive multiple resource status responses from at least a portion of respective target network devices of the set of one or more target network devices, each resource status response indicating a respective ability of the target network device to satisfy the quality of experience constraint of the UE; select a subset of available target network devices from the portion of the respective target network devices of the set of one or more target network devices based at least in part on the respective ability to satisfy the quality of experience constraint of the UE; and select the target network device from the subset of available target network devices based at least in part on the respective ability of the target network device to satisfy the quality of experience constraint of the UE and one or more radio resource management of the set of radio resource management variables.
6 . The serving network device of claim 4 , wherein the one or more processors are further operable to execute the code to cause the serving network device to: transmit a handover request to the target network device based at least in part on selecting the target network device, the handover request indicating that the handover procedure of the UE is to be performed to the target network device; and receive a handover response from the target network device, wherein the handover procedure of the UE is performed with the target network device based at least in part on the handover response.
7 . The serving network device of claim 1 , wherein, to adjust the first communication link, the one or more processors are operable to execute the code to cause the serving network device to: adjust one or more communication parameters configured for the first communication link between the UE and the serving network device.
8 . The serving network device of claim 1 , wherein the one or more processors are further operable to execute the code to cause the serving network device to: receive a UE capability message indicating support for generating a radio access network aware summary quality of experience report.
9 . The serving network device of claim 1 , wherein the measurement report comprises a summary quality of experience report indicating the information associated with the set of quality of experience variables, the summary quality of experience report comprising a summary of the set of quality of experience variables or a generic score of an overall satisfaction level.
10 . The serving network device of claim 1 , wherein the set of quality of experience variables comprise one or more of a cell identifier of the serving network device, or a service type for a service being communicated over the first communication link, or an average application layer throughput rate, or an average application layer round-trip-time measurement, or an average application layer jitter, or an average application layer packet drop rate, or a failure rate of the average application layer throughput rate, or a failure rate of the average application layer round-trip-time measurement, or a failure rate of the average application layer jitter, or a failure rate of the average application layer packet drop rate.
11 . A method for wireless communication at a serving network device, comprising: establishing a first communication link with a user equipment (UE); receiving a measurement report from the UE indicating information associated with a set of quality of experience variables and a set of radio resource management variables in a multi-layer readable format, wherein the set of quality of experience variables is associated with at least two different service types and with an application layer at the UE, and wherein the set of radio resource management variables is associated with the first communication link between the UE and the serving network device and a second communication link between the UE and a neighboring network device and with an access stratum layer at the UE; and adjusting, in response to the measurement report, the first communication link between the UE and the serving network device.
12 . The method of claim 11 , further comprising: transmitting a measurement request to the UE indicating quality of experience variables to include in the set of quality of experience variables, wherein the measurement report indicating the set of quality of experience variables is received in response to the measurement request.
13 . The method of claim 11 , wherein adjusting the first communication link comprises: performing, based at least in part on the set of quality of experience variables, a handover procedure of the UE from the serving network device to a target network device for the UE to establish a new communication link with the target network device.
14 . The method of claim 13 , further comprising: determining that the set of quality of experience variables fail to satisfy a threshold; transmitting a resource status request to a set of one or more target network devices comprising the target network device indicated in the measurement report, the resource status request indicating a quality of experience constraint of the UE and the set of quality of experience variables of the UE; receiving a resource status response from the target network device indicating support of the quality of experience constraint of the UE; and transmitting, based at least in part on the resource status response, a connection reconfiguration message to the UE identifying the target network device to perform the handover procedure to establish the new communication link.
15 . The method of claim 14 , further comprising: receiving multiple resource status responses from at least a portion of respective target network devices of the set of one or more target network devices, each resource status response indicating a respective ability of the target network device to satisfy the quality of experience constraint of the UE; selecting a subset of available target network devices from the portion of the respective target network devices of the set of one or more target network devices based at least in part on the respective ability to satisfy the quality of experience constraint of the UE; and selecting the target network device from the subset of available target network devices based at least in part on the respective ability of the target network device to satisfy the quality of experience constraint of the UE and one or more radio resource management of the set of radio resource management variables.
16 . The method of claim 14 , further comprising: transmitting a handover request to the target network device based at least in part on selecting the target network device, the handover request indicating that the handover procedure of the UE is to be performed to the target network device; and receiving a handover response from the target network device, wherein the handover procedure of the UE is performed with the target network device based at least in part on the handover response.
17 . The method of claim 11 , wherein adjusting the first communication link comprises: adjusting one or more communication parameters configured for the first communication link between the UE and the serving network device.
18 . The method of claim 11 , further comprising: receiving a UE capability message indicating support for generating a radio access network aware summary quality of experience report.
19 . The method of claim 11 , wherein the measurement report comprises a summary quality of experience report indicating the information associated with the set of quality of experience variables, the summary quality of experience report comprising a summary of the set of quality of experience variables or a generic score of an overall satisfaction level.
20 . The method of claim 11 , wherein the set of quality of experience variables comprise one or more of a cell identifier of the serving network device, or a service type for a service being communicated over the first communication link, or an average application layer throughput rate, or an average application layer round-trip-time measurement, or an average application layer jitter, or an average application layer packet drop rate, or a failure rate of the average application layer throughput rate, or a failure rate of the average application layer round-trip-time measurement, or a failure rate of the average application layer jitter, or a failure rate of the average application layer packet drop rate.

Description

CROSS REFERENCE The present application for patent is a Divisional of U.S. patent application Ser. No. 17/382,688 by KUMAR et al., entitled “QUALITY OF EXPERIENCE MEASUREMENTS FOR MOBILITY ROBUSTNESS” filed Jul. 22, 2021, which claims the benefit of U.S. Provisional Patent Application No. 63/059,150 by KUMAR et al., entitled “QUALITY OF EXPERIENCE MEASUREMENTS FOR MOBILITY ROBUSTNESS,” filed Jul. 30, 2020, each of which is assigned to the assignee hereof, and each of which is expressly incorporated by reference in its entirety herein. FIELD OF TECHNOLOGY The following relates to wireless communications, including quality of experience measurements for mobility robustness. BACKGROUND Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communications system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE). SUMMARY The described techniques relate to improved methods, systems, devices, and apparatuses that support quality of experience (QoE) measurements for mobility robustness. Generally, the described techniques provide for a user equipment (UE) to convert, at least to some degree, QoE variables (e.g., measurements of one or more QoE variables) at a layer, such as the application layer, into a format that is readable by a second layer, such as a access stratum of the UE and/or radio access network (RAN) layer of a base station. In some aspects, the UE may obtain a generic QoE score based on the application layer QoE measurement or identify a subset of the application layer QoE measurement for RAN optimization, send these QoE variables to the access stratum of the UE, thereafter the access stratum may transmit it to the RAN of a base station. The UE may have an active communication link established with the UE's serving base station. The UE may measure, observe, or otherwise identify a set of RAN aware QoE variables, for example, at the application layer of the UE. The UE may also measure, observe, or otherwise identify a set of radio resource management (RRM) variables, for example, at the access stratum of the UE, e.g., reference signal received power (RSRP), reference signal strength indicator (RSSI, channel state information (CSI), etc. The RRM variables may relate to the communication link between the UE and its serving base station as well as or alternatively for communication link(s) between the UE and target base station(s) of the UE (e.g., neighboring base stations that may be able to support wireless communication link(s) with the UE). The UE may transmit or otherwise provide a measurement report to its serving base station indicating information associated with a set of QoE variables (RAN aware QoE) in addition to the set of RRM variables. In some aspects, the UE may transmit the measurement report in a multi-layer readable format, e.g., in a format readable by the application layer and the access stratum of the UE, among other examples. For example, the UE may convert the QoE variables into a format readable by the access stratum and transfer the converted QoE variables or generic metrics to the access stratum. In another example, the UE may generate a summary of the QoE variables, package the summary in a transparent container, and provide the indication of the summary of the QoE variables to the access stratum (e.g., package the summary of the QoE variables in a format readable by the access stratum of the UE and/or a base station) via the transparent container. In some aspects, the UE or serving base station or both may update or otherwise adjust the communication link (e.g., the active communication link) based on the set of RRM variables and/or the set of QoE variables or generic QoE metrics. As one example when the communication link is performing at an acceptable level (e.g., various parameters are within a threshold), this may include adjusting or otherwise updating various communication parameters used for the communication link (e.g., adjusting a modulation and coding scheme