Physical layer procedures for user equipment in power saving mode

Patent metadata

Field	Value
Publication number	US-11418994-B2
Application number	US-202016929676-A
Country	US
Kind code	B2
Filing date	Jul 15, 2020
Priority date	Dec 13, 2017
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A user equipment can send a notification to a network node indicating that the user equipment is entering a battery saving mode of operation. Reduced physical layer procedures can be implemented based on reduced capabilities indicated by the user equipment. Reduced physical layer procedures can also be implemented based on the network node's reconfiguration of parameters to facilitate the activation of the reduced physical layer procedures. The user equipment can also send to the network node recommendations of reduced physical layer procedures.

First claim

What is claimed is:

1. A user equipment, comprising:
a processor; and
a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:
detecting that a decrease in a level of charge of a battery of the user equipment has transitioned below a threshold level of charge;
in response to the decrease in the level of charge, facilitating transmitting a first notification to network equipment that the user equipment is entering a battery saving mode of operation;
receiving an acknowledgement of the first notification from the network equipment;
determining a reduced group of physical layer operating capabilities smaller than a current group of physical layer operating capabilities, the reduced group of physical layer operating capabilities being related to transmissions via a physical uplink channel from the user equipment to the network equipment and via a physical downlink channel from the network equipment to the user equipment;
facilitating transmitting a second notification informing the network equipment of the reduced group of physical layer operating capabilities, wherein the second notification comprises configuration data representative of a configuration of the reduced group of physical layer operating capabilities; and
facilitating operating the user equipment according to the reduced group of physical layer operating capabilities, wherein the operating comprises receiving the transmissions from the network equipment, and wherein the transmissions are in response to the second notification and reflect compliance by the network equipment with the reduced group of physical layer operating capabilities determined by the user equipment.

2. The user equipment of claim 1 , wherein the reduced group of physical layer operating capabilities are further related to measurements of a channel state information reference signal from a single transmission device, and wherein the channel state information reference signal is received from the network equipment.

3. The user equipment of claim 1 , wherein the reduced group of physical layer operating capabilities are further related to a reduction in a number of transmission layers using a multiple input multiple output antenna transmission protocol.

4. The user equipment of claim 1 , wherein the reduced group of physical layer operating capabilities are further related to a reduction in an amount of bandwidth allocated to the user equipment from the network equipment.

5. The user equipment of claim 1 , wherein the reduced group of physical layer operating capabilities are further related to a reduction of a transmit power of an antenna of the user equipment that is used to transmit data to the network equipment.

6. The user equipment of claim 1 , wherein the reduced group of physical layer operating capabilities are further related to a reduction in a number of blind decoding operations performed by the user equipment.

7. The user equipment of claim 1 , wherein the reduced group of physical layer operating capabilities are further related to a reduction in a quantity of radio resource measurements by the user equipment within a period.

8. Network equipment, comprising:
a processor; and
a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:
receiving, from a user equipment, a notification that the user equipment is entering a battery saving mode of operation, wherein the notification comprises configuration data associated with a configuration of reduced physical layer communications procedures;
in response to receiving the notification, facilitating transmitting, to the user equipment, an acknowledgement of the notification;
determining, without regard to power saving implementation capabilities of the user equipment, the reduced physical layer communications procedures comprising fewer procedures than physical layer communications procedures when the user equipment is not in the battery saving mode of operation, the reduced physical layer communications procedures comprising an uplink and downlink procedure applicable to first transmissions via a physical uplink channel from the user equipment to the network equipment and second transmissions via a physical downlink channel from the network equipment to the user equipment; and
reconfiguring second parameters to facilitate an activation of the reduced physical layer communications procedures by the network equipment and at the user equipment.

9. The network equipment of claim 8 , wherein the reduced physical layer communications procedures further comprise a blind decoding procedure that reduces a number of blind decoding operations to be performed by the user equipment.

10. The network equipment of claim 8 , wherein the reduced physical layer communications procedures further comprise a transmit power procedure that reduces a transmit power of an antenna of the user equipment that is used to transmit data to the network equipment.

11. The network equipment of claim 8 , wherein the reduced physical layer communications procedures further comprise a radio resource measurement procedure that reduces a quantity of radio resource measurements taken by the user equipment within a period.

12. The network equipment of claim 8 , wherein the channel state information feedback procedure further comprises a reduction in a number of channel state information reference signals sent to the user equipment by the network equipment.

13. The network equipment of claim 8 , wherein the reduced physical layer communications procedures further comprise a reduction in a number of communication channels used for the first transmissions and the second transmissions.

14. A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processor, facilitate performance of operations, comprising:
detecting a drop in a level of charge of a battery of a user equipment below a threshold;
in response to the drop in the level of charge, facilitating transmitting a notification, to a network node device, that the user equipment is entering a battery power preservation mode of operation that is to consume less battery power than a standard power mode of operation;
receiving an acknowledgement from the network node device of the notification; and
facilitating transmitting, to the network node device, a signal comprising a recommendation, which is deniable by the network node device, of first physical layer communications procedures fewer in number than second physical layer procedures that are applicable to the standard power mode of operation, wherein the signal further comprises configuration data representative of the first physical layer communications procedures, the recommendation of the first physical layer communications procedures relating to transmissions via a physical uplink channel from the user equipment to the network node device and via a physical downlink channel from the network node device to the user equipment.

15. The non-transitory machine-readable medium of claim 14 , wherein the signal comprises a radio resource control signal.

16. The non-transitory machine-readable medium of claim 14 , wherein the recommendation of the first physical layer communications procedures comprises, in an error checking protocol, an increase of an amount of time that the network node device waits before sending a request for retransmission of data sent by the user equipment to the network node device.

17. The non-transitory machine-

Assignees

• At & T Ip I Lp
• At&T Iniellectual Property I L P

Inventors

• Wang Xiaoyi
• Ghosh Arunabha
• Majmundar Milap
• Akoum Salam
• Nammi Sairamesh
• Novlan Thomas

Classifications

• H04W74/0833

  Random access procedures, e.g. with 4-step access · CPC title

• H04W52/0209 Primary

  in terminal devices · CPC title

• H04W52/0261 Primary

  managing power supply demand, e.g. depending on battery level · CPC title

• H04W24/10

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

• H04W72/1268

  of uplink data flows · CPC title