Methods and devices for control of bandwidth part switching

Patent metadata

Field	Value
Publication number	US-11800525-B2
Application number	US-201916322107-A
Country	US
Kind code	B2
Filing date	Jan 7, 2019
Priority date	Jan 11, 2018
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A method in a User Equipment (UE) for control of Bandwidth Part (BWP) switching. The method includes determining that the UE has an active configured grant in a non-default BWP; and refraining from switching from the non-default BWP to a default BWP while the configured grant is active.

First claim

The invention claimed is:

1. A method in a User Equipment (UE) for control of Bandwidth Part (BWP) switching, wherein the UE communicates with a network device for transfer of data utilizing the BWP switching, the method comprising:
establishing a wireless communication link between the UE and the network device for the transfer of data;
determining that the UE has an active configured grant in a non-default BWP by determining that there is a Physical Uplink Shared Channel (PUSCH) or Physical Downlink Shared Channel (PDSCH) transmission, wherein the configured grant is an uplink grant to the UE or a downlink assignment from the network device, wherein a BWP inactivity timer is set to be active for a set duration to maintain the non-default BWP active, and wherein at an expiration of the BWP inactivity timer, the BWP switching is set to switch from the non-default BWP to a default BWP;
receiving from a network device, via Radio Resource Control (RRC) signaling, a message to restart the BWP inactivity timer each time when there is a PUSCH or PDSCH transmission in accordance with the configuration grant; and
refraining from switching from the non-default BWP to the default BWP during a life duration of the configured grant while the configured grant remains active by restarting the BWP inactivity timer in response to the message.

2. The method of claim 1 , further comprising restarting the BWP inactivity timer, when the configured grant is deactivated, with a timer value that can cause the switching from the non-default BWP to the default BWP.

3. A User Equipment (UE) for control of Bandwidth Part (BWP) switching, wherein the UE to communicate with a network device for transfer of data utilizing the BWP switching, comprising:
a transceiver;
a processor; and
a memory, the memory comprising instructions which, when executed by the processor, cause the UE to perform operations to:
establish a wireless communication link, via the transceiver, between the UE and the network device for the transfer of data;
determine that the UE has an active configured grant in a non-default BWP when determined that there is a Physical Uplink Shared Channel (PUSCH) or Physical Downlink Shared Channel (PDSCH) transmission, wherein the configured grant is an uplink grant to the UE or a downlink assignment from the network device, wherein a BWP inactivity timer is set to be active for a set duration to maintain the non-default BWP active, and wherein at an expiration of the BWP inactivity timer, the BWP switching is set to switch from the non-default BWP to a default BWP;
receive from a network device, via Radio Resource Control (RRC) signaling, a message to restart the BWP inactivity timer each time when there is a PUSCH or PDSCH transmission in accordance with the configuration grant; and
refrain from switching from the non-default BWP to the default BWP during a life duration of the configured grant while the configured grant remains active by restarting the BWP inactivity timer in response to the message.

4. A method in a network device for control of Bandwidth Part (BWP) switching, wherein the network device communicates with a User Equipment (UE) for transfer of data utilizing the BWP switching, the method comprising:
establishing a wireless communication link between the network device and the UE for the transfer of data;
determining that there is an active configured grant for the UE in a non-default BWP when there is a Physical Uplink Shared Channel (PUSCH) or Physical Downlink Shared Channel (PDSCH) transmission, wherein the configured grant is an uplink grant to the UE or a downlink assignment from the network device, wherein a BWP inactivity timer is set to be active for a set duration to maintain the non-default BWP active, and wherein at an expiration of the BWP inactivity timer, the BWP switching is set to switch from the non-default BWP to a default BWP;
transmitting to the UE, via Radio Resource Control (RRC) signaling, a message to restart the BWP inactivity timer each time when there is a PUSCH or PDSCH transmission in accordance with the configuration grant; and
refraining from switching a connection with the UE from the non-default BWP to a default BWP during a life duration of the configured grant while the configured grant remains active, wherein the UE refrains from switching from the non-default BWP to the default BWP during the life duration of the configured grant by restating the BWP inactivity timer in response to the message.

5. The method of claim 4 , further comprising restarting the BWP inactivity timer, when the configured grant is deactivated, with a timer value that can cause the switching of the connection with the user equipment from the non-default BWP to the default BWP.

Assignees

• Ericsson Telefon Ab L M

Inventors

• Liu Jinhua
• Pradas Jose Luis
• Enbuske Henrik
• Hofström Björn

Classifications

• H04W72/20

  Control channels or signalling for resource management · CPC title

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W28/08

  Load balancing or load distribution (transferring a connection for handling the traffic H04W36/22; wireless traffic scheduling H04W72/12) · CPC title

• H04L5/0098 Primary

  Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands · CPC title

• H04L5/001

  the frequencies being arranged in component carriers · CPC title