Method and user equipment for controlling PDCP aggregation

Patent metadata

Field	Value
Publication number	US-12483928-B2
Application number	US-202218088116-A
Country	US
Kind code	B2
Filing date	Dec 23, 2022
Priority date	Dec 23, 2021
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

A method for controlling, by a user equipment (UE), PDCP aggregation in a dual connectivity mode includes receiving a first Uplink (UL) data threshold value from a network; monitoring a throughput of a UL data of the UE and occurrence of at least one UL channel condition, wherein the at least one UL channel condition includes at least one of a network condition and a UE condition; determining whether to perform a calculation of a second UL data threshold value based on the occurrence of the at least one UL channel condition; calculating the second UL data threshold value based on a plurality of network parameters and a plurality of UE parameters, based on determining to perform the calculation of the second UL data threshold value; comparing an amount of the UL data with the second UL data threshold value; and controlling PCDP aggregation based on a result of the comparison.

First claim

What is claimed is:

1 . A method for controlling, by a User Equipment (UE), Packet Data Convergence Protocol (PDCP) aggregation in a dual connectivity mode, the method comprising:
receiving a first Uplink (UL) data threshold value from a network; monitoring a throughput of UL data of the UE and occurrence of at least one UL channel condition; determining whether to perform a calculation of a second UL data threshold value, based on the occurrence of the at least one UL channel condition; calculating the second UL data threshold value based on a plurality of network parameters and a plurality of UE parameters, based on determining to perform the calculation of the second UL data threshold value, wherein the plurality of network parameters include at least one of network-configured UL parameters, and dynamic UL parameters, and the plurality of UE parameters is related to at least one of a battery, a temperature and a Tx power of the UE; comparing an amount of the UL data with the second UL data threshold value; and based on the comparing indicating that the amount of the UL data is greater than the second UL data threshold value:
monitoring a throughput variation in lower layers until expiration of a time period of a timer;
determining whether the throughput variation is stable after the expiration of the time period of the timer; and
enabling PDCP aggregation based on determining that the throughput variation is stable.

2 . The method of claim 1 , further comprising:
disabling the PDCP aggregation based on the comparing indicating that the amount of the UL data is less than the second UL data threshold value.

3 . The method of claim 1 , further comprising:
recalculating the second UL data threshold value based on determining that the throughput variation is not stable after the expiration of the time period of the timer; and obtaining a third UL data threshold value with respect to the second UL data threshold value based on the recalculating.

4 . The method of claim 1 , wherein the first UL data threshold value and the second UL data threshold value indicate respective limits in the amount of UL data for controlling PDCP aggregation, and
wherein the amount of UL data is configured to flow through one of a primary leg or a secondary leg of an NR RLC entity and an LTE RLC entity.

5 . The method of claim 1 , further comprising:
determining an occurrence of a poor UL channel condition, as the network condition on a primary leg of one of an NR RLC entity or an LTE RLC entity based on the monitoring of the UL channel condition, the throughput variation in the lower layers, and a data requirement in upper layers; calculating the second UL data threshold value to be lower with respect to the first UL data threshold value based on the determining of the occurrence of the poor UL channel condition; aggregating the amount of the UL data over both a primary and a secondary leg of one of the NR RLC entity or the LTE RLC entity while PDCP aggregation is enabled; and sending a dummy BSR to the network on the primary leg of the one of the NR RLC entity or the LTE RLC entity.

6 . The method of claim 5 , further comprising:
determining an improvement in at least one of the UL channel condition, the data requirement in the upper layers, or the throughput variation in the lower layers; and recalculating the second UL data threshold value to increase the second UL data threshold value to the first UL data threshold value based on the determining of the improvement in the at least one of the UL channel condition, the data requirement in the upper layers, or the throughput variation in the lower layers.

7 . The method of claim 1 , further comprising:
measuring UE parameters including at least one of an available power headroom in a primary leg of one of an NR RLC entity or an LTE RLC entity, a transmission power of the UE, or a Maximum Transmission Power Level (MPTL) in the primary leg; determining occurrence of the at least one UL channel condition indicating that the transmission power of the UE is greater than the MPTL in the primary leg based on a comparison of the transmission power of the UE with the MPTL in the primary leg; and calculating the second UL data threshold value to be decreased with respect to the first UL data threshold value based on determining the occurrence of the transmission power of the UE being greater than the MPTL in the primary leg.

8 . The method of claim 7 , further comprising:
determining occurrence of the at least one UL channel condition indicating that the transmission power of the UE is less than the MPTL in the primary leg based on the comparison of the transmission power of the UE with the MPTL in the primary leg; determining the available power headroom in the primary leg is high based on the determination of the occurrence of the at least one UL channel condition indicating that the transmission power of the UE is less than the MPTL in the primary leg, wherein the available power headroom in the primary leg being high indicates that the UE is allowed to transmit with a transmission power greater than a current transmission power; and calculating the second UL data threshold value to be increased with respect to the first UL data threshold value based on determining the available power headroom in the primary leg is high.

9 . The method of claim 8 , further comprising:
determining the available power headroom in the primary leg is low based on determining occurrence of the at least one UL channel condition indicating that the transmission power of the UE is close to the MPTL in the primary leg, wherein the available power headroom in the primary leg being low indicates the UE is not allowed to transmit with much higher the transmission power; and calculating the second UL data threshold value to be decreased with respect to the first UL data threshold value based on determining the available power headroom in the primary leg is low.

10 . The method of claim 7 , further comprising:
determining a UL data split ratio during PDCP aggregation based on the available power headroom, a current transmission power of the UE, or a MTPL in the primary leg and a secondary leg; and determining whether the available power headroom is high on the primary leg or in the secondary leg, wherein the UL data split ratio is higher on one of the primary leg or the secondary leg based on a result of the determining.

11 . The method of claim 1 , further comprising:
determining whether an ongoing service is related to a voice call; determining, based on determining that the ongoing service is related to the voice call, whether the ongoing service is provided over a primary leg; and calculating the second UL data threshold value to be increased with respect to the first UL data threshold value based on determining that the ongoing service is provided over the primary leg, wherein the second UL data threshold value is calculated to be decreased with respect to the first UL data threshold value based on determining that the ongoing service is not provided over a secondary leg.

12 . The method of claim 1 , further comprising:
measuring UE parameters including at least one of a thermal mitigation temperature value configured in the UE, a current temperature of the UE, an ambient temperature at a particular instant of time, an average temperature increase caused due to an NR transmission at a current NR signal condition, or an average temperature increase caused due to LTE transmission at a current LTE signal condition; inputting the UE parameters into a machine learning (ML) model; predicting, using the ML model, a the

Assignees

• Samsung Electronics Co Ltd

Inventors

• Sen Arijit
• Roy Koustav
• Pooniya Ankur
• Mazumdar Subhrodip
• Satyaganapati Pratibha K
• EKKUNDI Manasi
• Mattam Jajohn Mathew

Classifications

• H04W28/0967

  Quality of Service [QoS] parameters · CPC title

• H04W76/15

  Setup of multiple wireless link connections · CPC title

• H04W28/0268 Primary

  using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] (negotiating SLA or negotiating QoS H04W28/24) · CPC title