# US 11,445,498 B2 · Control channel monitoring

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,445,498 B2
- Document ID: US11445498B2
- Status: Granted
- Kind: B2
- Application number: 16/631,433
- Filed: 2018-07-12
- Published: 2020-06-11
- Granted: 2022-09-13
- Earliest claimed: 2017-08-10
- Assignees: Telefonaktiebolaget LM Ericsson (publ)
- Applicants: Telefonaktiebolaget LM Ericsson (publ)
- Inventors: Peter Alriksson; Tai Do; Reem Karaki; Gen Li; Amitav Mukherjee; Yu Yang
- Web page: https://patentgrep.com/patent/US11445498B2

## CPC

- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- 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 method for use in a User Equipment configured to operate according to the New Radio (5G) standard, said method comprising: monitoring a control region for mini-slots for a transmission; detecting a start of the transmission; monitoring a control region of said transmission for regular slots; detecting that the transmission has ended; and in response thereto monitoring the control region for mini-slots again.

## Claims

### Claim 1

A method for use in a User Equipment, said method comprising:
switching between monitoring a control region of mini-slots and monitoring a control region of regular slots, wherein each of the mini-slots has a shorter duration than each of the regular slots, wherein said switching comprises:
monitoring the control region of mini-slots;
detecting a start of a transmission by a network node or another device, where said detecting is by correlation to a known reference signal or preamble, or by decoding a physical control channel or physical broadcast channel;
during a time when said transmission is ongoing, switching from monitoring the control region of mini-slots to monitoring the control region of regular slots;
detecting that the transmission has ended and in response thereto,
switching from monitoring the control region of regular slots to monitoring the control region of mini-slots again.

### Claim 2 (depends on 1)

The method of claim 1, further comprising postponing the switch from monitoring the control region of mini-slots to monitoring the control region of regular slots until a slot border.

### Claim 3 (depends on 1)

The method of claim 1, further comprising receiving information regarding whether a particular slot mini-slot is allocated for downlink or uplink, and in case of uplink allocation, stopping monitoring of the control region for said slot and resuming monitoring in time intervals allocated to downlink transmissions.

### Claim 4 (depends on 1)

The method of claim 1, further comprising adaptation of a bandwidth that is monitored.

### Claim 5 (depends on 1)

The method of claim 1, wherein the User Equipment is configured to operate according to the New Radio (5G) standard.

### Claim 6

A non-transitory computer readable storage medium encoded with instructions that, when executed on a processor, perform a method for use in a User Equipment, said method comprising:
switching between monitoring a control region of mini-slots and monitoring a control region of regular slots, wherein each of the mini-slots has a shorter duration than each of the regular slots, wherein said switching comprises:
monitoring the control region of mini-slots;
detecting a start of a transmission by a network node or another device, where said detecting is by correlation to a known reference signal or preamble, or by decoding a physical control channel or physical broadcast channel;
during a time when said transmission is ongoing, switching from monitoring the control region of mini-slots to monitoring the control region of regular slots;
detecting that the transmission has ended and in response thereto,
switching from monitoring the control region of regular slots to monitoring the control region of mini-slots again.

### Claim 7

A User Equipment comprising a controller configured to:
switch between monitoring a control region of mini-slots and monitoring a control region of regular slots, wherein each of the mini-slots has a shorter duration than each of the regular slots, wherein said switching comprises:
monitoring the control region of mini-slots;
detecting a start of a transmission by a network node or another device, where said detecting is by correlation to a known reference signal or preamble, or by decoding a physical control channel or physical broadcast channel;
during a time when said transmission is ongoing, switching from monitoring the control region of mini-slots to monitoring the control region of regular slots;
detecting that the transmission has ended and in response thereto,
switching from monitoring the control region of regular slots to monitoring the control region of mini-slots again.

### Claim 8 (depends on 7)

The User Equipment of claim 7, being further configured to operate according to the New Radio (5G) standard.