# US 11,116,032 B2 · Power saving mechanism

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- Number: US 11,116,032 B2
- Document ID: US11116032B2
- Status: Granted
- Kind: B2
- Application number: 17/084,341
- Filed: 2020-10-29
- Published: 2021-02-18
- Granted: 2021-09-07
- Earliest claimed: 2019-01-08
- Assignees: Ofinno, LLC
- Applicants: Ofinno, LLC
- Inventors: Hua Zhou; Esmael Dinan; Ali Cagatay Cirik; Hyoungsuk Jeon; Alireza Babaei; Kyungmin Park; Kai Xu
- Web page: https://patentgrep.com/patent/US11116032B2

## CPC

- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- H04L 5/0032: {Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation}
- H04W 52/0206: {in access points, e.g. base stations}
- H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame}
- H04W 52/0219: {where the power saving management affects multiple terminals}
- H04W 52/0229: {where the received signal is a wanted signal}
- H04W 52/0235: {where the received signal is a power saving command}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 76/11: Allocation or use of connection identifiers
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

A wireless device receives a radio resource control message comprising: a radio network temporary identifier, RNTI, for a downlink control information used for power saving; and a location parameter for the wireless device. Based on the RNTI, a first DCI comprising blocks is received. The location parameter indicates a location of a block, of the blocks, for the wireless device. The block comprises: a wake-up indication for the wireless device; and a dormancy indication for at least one secondary cell of the wireless device. The wireless device transitions to a wake-up state in response to the wake-up indication. The wireless device transitions the at least one secondary cell transitions to a dormant state based on the dormancy indication.

## Claims

### Claim 1

A method comprising:
receiving, by a wireless device, a radio resource control message comprising:
a radio network temporary identifier, RNTI, for a downlink control information (DCI) used for power saving; and
a location parameter of a block, for the wireless device, in the DCI;
receiving, based on the RNTI, a first DCI comprising blocks, wherein:
the location parameter indicates a location of a first block, of the blocks, for the wireless device; and
the first block comprises:
a wake-up indication for the wireless device; and
a dormancy indication for at least one secondary cell of the wireless device;
transitioning to a wake-up state in response to the wake-up indication; and
transitioning the at least one secondary cell to a dormant state based on the dormancy indication.

### Claim 2 (depends on 1)

The method of claim 1, further comprising, while in the wake-up state, receiving a second DCI comprising at least one of:
a downlink assignment; and
an uplink grant.

### Claim 3 (depends on 1)

The method of claim 1, further comprising, while the at least one secondary cell is in the dormant state, stopping monitoring a downlink control channel on the at least one secondary cell.

### Claim 4 (depends on 3)

The method of claim 3, wherein the stopping monitoring the downlink control channel comprises stopping monitoring downlink control channels on one or more cells in a discontinuous reception active time of a discontinuous reception cycle.

### Claim 5 (depends on 1)

The method of claim 1, further comprising, while the at least one secondary cell is in the dormant state, at least one of:
stopping receiving a downlink data packet via the at least one secondary cell; and
stopping transmitting an uplink signal on the at least one secondary cell.

### Claim 6 (depends on 1)

The method of claim 1, further comprising, while the at least one secondary cell is in the dormant state, transmitting a channel state information report for the at least one secondary cell.

### Claim 7 (depends on 1)

The method of claim 1, wherein:
the radio resource control message indicates a format of the DCI used for power saving; and
the receiving the first DCI is based on:
a first format of the first DCI being the format of the DCI used for power saving; and
cyclic redundancy check bits of the first DCI being scrambled with the RNTI.

### Claim 8 (depends on 1)

The method of claim 1, wherein each of the blocks in the first DCI:
corresponds to a respective wireless device of a plurality of wireless devices; and
notifies power saving information for the respective wireless device.

### Claim 9

A method comprising:
receiving, by a wireless device, a radio resource control message comprising:
a radio network temporary identifier, RNTI, for a downlink control information (DCI) used for power saving for wireless devices comprising the wireless device; and
a location parameter for the wireless device;
receiving, based on the RNTI, a first DCI comprising blocks, wherein:
the location parameter indicates a location of a block, of the blocks, for the wireless device; and
the block comprises a wake-up indication; and
transitioning, in response to the wake-up indication, to a wake-up state comprising monitoring one or more downlink control channels in a discontinuous reception active time of a discontinuous reception cycle.

### Claim 10 (depends on 9)

The method of claim 9, further comprising, while in the wake-up state, receiving a second DCI comprising at least one of:
a downlink assignment; and
an uplink grant.

### Claim 11 (depends on 9)

The method of claim 9, further comprising, while in the wake-up state, at least one of:
monitoring downlink control channels on one or more cells;
receiving downlink data packets via the one or more cells; and
transmitting uplink signals on the one or more cells.

### Claim 12 (depends on 9)

The method of claim 9, wherein:
the radio resource control message indicates a format of the DCI used for power saving; and
the receiving the first DCI is based on:
a first format of the first downlink control information DCI being the format of the DCI used for power saving; and
cyclic redundancy check bits of the first DCI being scrambled with the RNTI.

### Claim 13 (depends on 9)

The method of claim 9, wherein each of the blocks in the first DCI:
corresponds to a respective wireless device of a plurality of wireless devices; and
notifies power saving information for the respective wireless device.

### Claim 14

A method comprising:
receiving, by a wireless device, a radio resource control message comprising:
a radio network temporary identifier, RNTI, for a downlink control information (DCI) used for power saving;
a location parameter for the wireless device; and
configuration parameters of one or more secondary cells;
receiving, based on the RNTI, a first DCI comprising blocks, wherein:
the location parameter indicates a location of a block, of the blocks, for the wireless device; and
the block comprises a dormancy indication for at least one secondary cell of the one or more secondary cells; and
transitioning the at least one secondary cell to a dormant state in response to the dormancy indication indicating the dormant state.

### Claim 15 (depends on 14)

The method of claim 14, further comprising, while the at least one secondary cell is in the dormant state, stopping monitoring a downlink control channel on the at least one secondary cell.

### Claim 16 (depends on 15)

The method of claim 15, wherein the stopping monitoring the downlink control channel comprises stopping monitoring downlink control channels on one or more cells in a discontinuous reception active time of a discontinuous reception cycle.

### Claim 17 (depends on 14)

The method of claim 14, further comprising, while the at least one secondary cell is in the dormant state, at least one of:
stopping receiving a downlink data packet via the at least one secondary cell; and
stopping transmitting an uplink signal on the at least one secondary cell.

### Claim 18 (depends on 14)

The method of claim 14, further comprising, while the at least one secondary cell is in the dormant state, transmitting a channel state information report for the at least one secondary cell.

### Claim 19 (depends on 14)

The method of claim 14, wherein:
the radio resource control message indicates a format of the DCI used for power saving; and
the receiving the first DCI is based on:
a first format of the first DCI being the format of the DCI used for power saving; and
cyclic redundancy check bits of the first DCI being scrambled with the RNTI.

### Claim 20 (depends on 14)

The method of claim 14, wherein each of the blocks in the first DCI:
corresponds to a respective wireless device of a plurality of wireless devices; and
notifies power saving information for the respective wireless device.