US-12621748-B2 - Dynamic reporting adjustment for fixed wireless access

Abstract

Systems and methods are provided for making dynamic reporting adjustments for fixed wireless access (FWA) devices. Methods include grouping wireless devices connected to an access node in a network into one of a mobile group and a fixed wireless access (FWA) group. The method additionally includes adjusting a periodicity for sending a channel state information (CSI)-reference signal (RS) from the access node to the wireless devices in the FWA group and adjusting a periodicity for receiving a sounding reference signal (SRS) for the FWA group.

Inventors

• Mochamad Mirza

Assignees

• T-MOBILE INNOVATIONS LLC

Dates

Publication Date

20260505

Application Date

20220919

Claims (20)

1. 1 . A method comprising: grouping wireless devices connected to an access node in a network into one of a mobile group and a fixed wireless access (FWA) group; adjusting a periodicity for sending a channel state information (CSI)-reference signal (RS) from the access node to the wireless devices in the FWA group, wherein adjusting includes increasing the periodicity, causing the wireless devices in the FWA group to receive the CSI-RS from the access node less frequently than the wireless devices in the mobile group; and adjusting a periodicity for receiving a sounding reference signal (SRS) from the FWA group, causing the wireless devices in the FWA group to send the SRS to the access node less frequently than the wireless devices in the mobile group.
2. 2 . The method of claim 1 , further comprising grouping the wireless devices into the mobile group and the FWA group based on respective single-network slice selection assistance information (S-NSSAI).
3. 3 . The method of claim 2 , wherein the S-NSSAI includes a slice service type (SST) and a slice differentiator (SD) and grouping the wireless devices includes grouping wireless devices having a first SD value in the FWA group.
4. 4 . The method of claim 3 , further comprising grouping wireless devices with a second SD value in the mobile group.
5. 5 . The method of claim 1 , further comprising grouping the wireless devices based on at least one of a public land mobile network identifier (PLMN-ID), quality of service (QoS) class identifier (QCI), 5G QoS identifier (5QI), service profile identifier/RAT frequency selection priority index (SPID/RFSP), international mobile equipment identity-type allocation code (IMEI-TAC), international mobile station equipment identity software (IMEI-SV) and international mobile station equipment identity software version (IMEISV).
6. 6 . The method of claim 1 , further comprising adjusting the CSI-RS periodicity for the FWA group to a maximum allowed by the network.
7. 7 . The method of claim 6 , wherein the maximum allowed by the network is 640 ms.
8. 8 . The method of claim 1 , further comprising adjusting the SRS periodicity for the wireless devices in the FWA group to a maximum allowed by the network.
9. 9 . The method of claim 8 , wherein the maximum allowed by the network is 80 ms.
10. 10 . The method of claim 1 , further comprising increasing a number of connected wireless devices in the FWA group based on the adjusted SRS periodicity.
11. 11 . A system comprising a processing node; and a processor coupled to the processing node programmed to perform operations comprising: grouping wireless devices connected to an access node in a network into one of a mobile group and a fixed wireless access (FWA) group; adjusting a periodicity of a channel state information (CSI)-reference signal (RS) sent from the access node to the wireless devices in the FWA group, wherein adjusting includes increasing the periodicity, causing the wireless devices in the FWA group to receive the CSI-RS from the access node less frequently than the wireless devices in the mobile group; and adjusting a periodicity for receiving a sounding reference signal (SRS) from the FWA group, causing the wireless devices in the FWA group to send the SRS to the access node less frequently than the wireless devices in the mobile group.
12. 12 . The processing node of claim 11 , the operations further comprising grouping the wireless devices into the mobile group and the FWA group based on respective single-network slice selection assistance information (S-NSSAI).
13. 13 . The processing node of claim 12 , wherein the S-NSSAI includes a slice service type (SST) and a slice differentiator (SD) and the operations further comprise grouping the wireless devices includes grouping wireless devices having a first SD value in the FWA group.
14. 14 . The processing node of claim 13 , further comprising grouping wireless devices with a second SD value in the mobile group.
15. 15 . The processing node of claim 11 , the operations further comprising adjusting the CSI-RS periodicity for the FWA group to a maximum allowed by the network.
16. 16 . The processing node of claim 11 , the operations further comprising adjusting the SRS periodicity for the wireless devices in the FWA group to a maximum allowed by the network.
17. 17 . An access node comprising: a processor programmed to perform operations including: grouping wireless devices connected to an access node in a network into at least two groups including a fixed wireless access (FWA) group; adjusting a periodicity for a channel state information (CSI)-reference signal (RS) sent from the access node to the wireless devices in the FWA group, wherein adjusting includes increasing the periodicity, causing the wireless devices in the FWA group to receive the CSI-RS from the access node less frequently than prior to the adjustment; and adjusting a periodicity for a sounding reference signal (SRS) transmitted from the FWA group, causing the wireless devices in the FWA group to send the SRS to the access node less frequently than prior to the adjustment.
18. 18 . The access node of claim 17 , wherein the at least two groups further comprise a mobile group.
19. 19 . The access node of claim 18 , the operations further comprising adjusting the periodicity for the CSI-RS, causing the wireless devices in the mobile group to receive the CSI-RS more frequently than the wireless devices in the FWA group.
20. 20 . The access node of claim 18 , the operations further comprising allowing additional wireless devices in the FWA group based on adjusting the periodicity for the SRS.

Description

TECHNICAL BACKGROUND A wireless network, such as a cellular network, can include an access node (e.g., base station) serving multiple wireless devices or user equipment (UE) in a geographical area covered by a radio frequency transmission provided by the access node. As technology has evolved, different carriers within the cellular network may utilize different types of radio access technologies (RATs). RATs can include, for example, 3G RATs (e.g., GSM, CDMA etc.), 4G RATs (e.g., WiMax, LTE, etc.), and 5G RATs (new radio (NR)). Further, different types of access nodes may be implemented for deployment for the various RATs. For example, an eNodeB may be utilized for 4G RATs and a gNodeB may be utilized for 5G RATs. Deployment of the evolving RATs in a network provides numerous benefits. For example, newer RATs may provide additional resources to subscribers, faster communications speeds, and other advantages. To ensure consistent coverage through a wide geographic range, existing technologies such as 4G can be used in combination with newer technologies such as 5GNR. For example, in an E-UTRAN New Radio Dual Connectivity (EN-DC) configuration, wireless devices connect to an LTE eNodeB and 5G gNodeB. Further, in order to bring network access to remote areas, network operators employing 5G have begun to utilize fixed wireless access (FWA). FWA enables network operators to deliver broadband services to suburban and rural areas, supporting home and business applications where fiber is prohibitively expensive FWA employs standardized 3GPP architectures and common mobile components to deliver ultra-high-speed broadband services to stationary or fixed devices of residential subscribers and enterprise customers. Thus, FWA can provide suburban and rural consumers with the bandwidth required to support high definition streaming services and high speed Internet access. In order to avoid prolonged decreases in quality of service (QoS) or other performance parameters, the base station sends both fixed and mobile wireless devices a channel state information reference signal (CSI-RS) in the downlink direction. CSI-RS are used for beamforming support and play an important role in performing tasks such as beam acquisition and evaluation, adaptation of the beam, decision making for beam switching, and UE tracking with steerable beams. In response to the CSI-RS, wireless devices measure the quality of the down link channel and report this in the uplink, for example, through CSI or quality channel indicator (QCI) reports. UEs will use these reference signals to report channel status information such as CSI-reference signal received power (RSRP), CSI-reference signal received quality (RSRQ) and CSI-signal to noise and interference ratio (SINR) for mobility procedures. CSI reports tell the access node how good or bad a channel is at a specific time. In response to CSI reports, a network entity can attempt to properly perform modulation coding scheme (MCS) assignment and allocate and schedule resources for each of the wireless devices to positively impact performance. The network entity considers the number of number of resource blocks and MCS for each CQI value to properly allocate the resources for each of the wireless devices. Further, both fixed and mobile wireless devices transmit a sounding reference signal (SRS) to the base station in the uplink direction. The SRS is transmitted for uplink channel sounding, including channel quality estimation and synchronization. The transmission of the SRS can serve to be a contributing factor limiting the number of FWA wireless devices that can be served by a base station. Under certain undesirable conditions, the wireless devices may have a need for increased frequency of reporting to the network entity in order to benefit from resource reallocation. However, under conditions that are predictable and stable, such as for fixed wireless devices experiencing little channel condition variation, repeated re-evaluation is unnecessary and increases overhead. Accordingly, a system is needed that will dynamically alter the stored CSI-RS periodicity and SRS periodicity for transmissions between base stations and selected connected wireless devices. Further, there is a need for systems and methods that can improve overall resource utilization and improve performance within a wireless network. OVERVIEW Exemplary embodiments described herein include systems, methods, and processing nodes for dynamically adjusting periodicity for channel state information-reference signal (CSI-RS) and sounding reference signal (SRS) for fixed wireless access (FWA) devices. Embodiments of the method include grouping wireless devices connected to an access node in a network into one of a mobile group and a FWA group. The method further includes adjusting a periodicity for sending a CSI-RS from the access node to the wireless devices in the FWA group and adjusting a periodicity for receiving a SRS for the FWA group. In