Methods and systems for maximizing throughput for a device operating in multi-RAT mode

Patent metadata

Field	Value
Publication number	US-12167271-B2
Application number	US-202117503129-A
Country	US
Kind code	B2
Filing date	Oct 15, 2021
Priority date	Oct 16, 2020
Publication date	Dec 10, 2024
Grant date	Dec 10, 2024

Abstract

In an embodiment, a method for selecting a frequency combination for a User Equipment (UE), is disclosed. The method includes determining, by the UE, at least one of a bandwidth or multiple-input multiple-output (MIMO) layer information associated with each of a plurality of cells upon detecting the plurality of cells present in a network. The method includes identifying, by the UE, at least one combination of cells amongst the plurality of cells providing a maximum throughput based on the determined bandwidth and the MIMO layer information associated with each of the plurality of cells. The method further includes latching, by the UE, onto the combination of cells with the maximum throughput.

First claim

What is claimed is:

1. A method for selecting a frequency combination for a user equipment (UE), the method comprising:
determining, by the UE, bandwidth information and multiple-input multiple-output (MIMO) layer information associated with each of a plurality of cells upon detecting the plurality of cells present in a network, wherein the MIMO layer information indicates a number of MIMO layers supported by the UE in a frequency band corresponding to each of the plurality of cells;
determining, based on the bandwidth information and the MIMO layer information, that a first cell in a combination of cells has more MIMO layers and a lower bandwidth than a second cell in the combination of cells;
sending a channel status information (CSI) report to the network, wherein the CSI report indicates a lower rank index (RI) for the first cell and the CSI report indicates a higher RI for the second cell;
identifying, by the UE, at least one combination of cells among the plurality of cells that provides a maximum throughput based on the bandwidth information and the MIMO layer information associated with each of the plurality of cells; and
connecting, by the UE, to a combination of cells that provides the maximum throughput.

2. The method of claim 1 , further comprising:
determining, by the UE, another combination of cells among the plurality of cells that provides a throughput less than the maximum throughput, upon failing to determine the at least one combination of cells that provides the maximum throughput,
wherein determining the other combination of cells comprises:
ranking combinations of cells among the plurality of cells;
selecting a higher ranked combination among the ranked combinations; and
selecting a lower ranked combination among the ranked combinations when there is failure to connect to any one cell from the higher ranked combination, wherein the lower ranked combination has a next highest rank among the ranked combinations.

3. The method of claim 1 , further comprising:
acquiring duplexing mode information for each of the plurality of cells; and
determining the combination of cells based on the duplexing mode information.

4. The method of claim 1 , further comprising:
sending, by the UE to the network, a Tracking Area Update (TAU) request indicating an update in UE capability information, upon determining that a combination of cells configured by the network is unable to provide the maximum throughput;
receiving, by the UE from the network, an inquiry associated with a UE carrier aggregation capability in response to sending the TAU request; and
sending, by the UE, updated UE capability information to the network in response to receiving the inquiry from the network.

5. The method of claim 4 , wherein, the TAU request comprises a flag set, by the UE, to a UE radio capability information update needed flag.

6. The method of claim 4 , wherein the updated UE capability information comprises reduced MIMO capabilities on a band supporting lower bandwidths than another available band among the bands of the combination of cells configured by the network, removing a support for EN-DC, and removing a support for the band supporting the lower bandwidths.

7. The method of claim 1 , wherein determining the bandwidth information comprises:
determining, by the UE, a bandwidth associated with a new radio (NR) cell among the plurality of cells, in response to determining that a B1 measurement of the NR cell is configured by the network, wherein the UE is operating on maximum component carriers;
comparing, by the UE, the bandwidth associated with the NR cell with a bandwidth associated with a Long Term Evolution (LTE) cell that is part of a previously configured combination of cells for the UE; and
performing, by the UE, one of:
sending the B1 measurement associated with the NR cell, upon determining that addition of the NR cell to the previously configured combination of cells in place of the LTE cell would result in a higher total bandwidth and the maximum throughput as compared to the previously configured combination of cells; or
continuing operation with the previously configured combination of cells, upon determining that the addition of the NR cell to the previously configured combination of cells in place of the LTE cell would result in a lower total bandwidth and a lower throughput as compared to the previously configured combination of cells.

8. The method of claim 1 , wherein determining the bandwidth information comprises:
determining, by the UE, a bandwidth associated with a new radio (NR) cell that is part of a previously configured combination of cells for the UE;
determining, by the UE, a bandwidth associated with a Long Term Evolution (LTE) cell among the plurality of cells;
comparing, by the UE, the bandwidth associated with the NR cell with the bandwidth associated with the LTE cell; and
sending, by the UE, an SCGFailureInfo message to the network for removal of the NR cell in response to determining that the bandwidth of the NR cell is less than the bandwidth associated with the LTE cell.

9. The method of claim 1 , wherein determining the bandwidth information further comprises:
determining, by the UE, a bandwidth associated with a cell among the plurality of cells for which a measurement event is configured by the network, wherein the measurement event is configured by the network for modification of one or more cells that are part of a previously configured combination of cells;
comparing, by the UE, the bandwidth associated with the cell for which the measurement event is configured with a bandwidth associated with the one or more cells that are part of the previously configured combination of cells;
performing by the UE, one of:
sending, to the network, a measurement associated with the cell for which the measurement event is configured, upon determining that addition of the cell to the previously configured combination of cells in place of the one or more cells that are part of the previously configured combination of cells would result in a higher total bandwidth and a higher throughput as compared to the previously configured combination of cells; and
continuing operation with the previously configured combination of cells, upon determining that the addition of the cell for which the measurement event is configured to the previously configured combination of cells in place of the one or more cells that are part of the previously configured combination of cells would result in a lower total bandwidth and a lower throughput as compared to the previously configured combination of cells.

10. The method of claim 9 , wherein the one or more previously configured cells are LTE cells.

11. The method of claim 1 , wherein the network is configured, in response to the CSI report, to increase the MIMO layers on the second cell and decrease the MIMO layers on the first cell.

12. The method of claim 1 , further comprising:
receiving, by the UE from the network, a configuration for a new radio (NR) measurement for addition of an NR cell in an E-UTRAN New Radio-Dual Connectivity (EN-DC) mode, wherein the UE is operating in an LTE mode and transferring data;
determining, by the UE, whether the NR measurement is configured for one or more Time Division Duplex (TDD) bands and one or more Frequency Division Duplex (FDD) bands; and
sending, by the UE to the network, upon determining that the NR measurement is configured for the one or more TDD bands and the one or more FDD bands, a measurement report for the one or more TDD bands.

13. The method of claim 12 , wherein the network is configured to add an NR cell associate

Assignees

• Samsung Electronics Co Ltd

Inventors

• JHA Kailash Kumar
• Kaswan Abhishek
• Jangid Alok Kumar
• Nishant
• Jain Sidhant

Classifications

• H04W36/00692

  using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO] (allocation of physical resources in CoMP or in CA H04L5/0035) · CPC title

• H04W76/10

  Connection setup · CPC title

• H04B7/0413

  MIMO systems · CPC title

• H04W88/06

  adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals · CPC title

• H04W24/10

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title