# US 2020/0288474 A1 · Bandwidth part configuration switching for multiple transceiver nodes

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

- Number: US 2020/0288474 A1
- Document ID: US20200288474A1
- Status: Published application
- Kind: A1
- Application number: 16/708,265
- Filed: 2019-12-09
- Published: 2020-09-10
- Earliest claimed: 2019-03-05
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Sungwoo Park; Mostafa Khoshnevisan; Xiaoxia Zhang; Tao Luo; Jing Sun; Wooseok Nam
- Web page: https://patentgrep.com/patent/US20200288474A1

## CPC

- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 36/06: Reselecting a communication resource in the serving access point
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04B 7/024: Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/0035: {Resource allocation in a cooperative multipoint environment}
- H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands}
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Methods, systems, and devices for wireless communications are described. A first transceiver node of a set of transceiver nodes may transmit a control message (e.g., downlink control information (DCI)) to a user equipment (UE). Upon receiving the control message, the UE may switch from a first bandwidth part (BWP) configuration for the first transceiver node to a second BWP configuration for the first transceiver node. Additionally, the UE may switch from BWP configurations for other transceiver nodes of the set of transceiver nodes. Upon switching from the first BWP configuration, the UE may start a timer and may switch from the second BWP configuration to a third BWP configuration upon expiration of the timer. The timer may be restarted each time the UE receives a communication from any of the set of transceiver nodes, a subset of the set of transceiver nodes, or from the first transceiver node.

## Claims

### Claim 1

A method for wireless communications at a user equipment (UE), comprising:
identifying a transceiver node cluster comprising a plurality of transceiver nodes configured for communication with the UE;
receiving a control message from a first transceiver node of the plurality of transceiver nodes; and
switching from a first bandwidth part configuration for the first transceiver node to a second bandwidth part configuration for the first transceiver node based at least in part on the control message.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
switching from a first bandwidth part configuration for a second transceiver node of the plurality of transceiver nodes to a second bandwidth part configuration for the second transceiver node based at least in part on the control message.

### Claim 3 (depends on 2)

The method of claim 2, wherein the first bandwidth part configuration for the first transceiver node spans a same radio frequency bandwidth as the first bandwidth part configuration for the second transceiver node, and wherein the second bandwidth part configuration for the first transceiver node spans a same radio frequency bandwidth as the second bandwidth part configuration for the second transceiver node.

### Claim 4 (depends on 2)

The method of claim 2, further comprising:
receiving a configuration message that identifies at least the first transceiver node as a master transceiver node, wherein the switching from the first bandwidth part configuration for the second transceiver node to the second bandwidth part configuration for the second transceiver node is further based at least in part on the first transceiver node being identified as the master transceiver node.

### Claim 5 (depends on 1)

The method of claim 1, further comprising:
starting a common timer for the plurality of transceiver nodes based at least in part on switching from the first bandwidth part configuration for the first transceiver node to the second bandwidth part configuration for the first transceiver node;
receiving a communication from any of the plurality of transceiver nodes; and
restarting the common timer for the plurality of transceiver nodes based at least in part on receiving the communication from any of the plurality of transceiver nodes.

### Claim 6 (depends on 5)

The method of claim 5, further comprising:
switching from the second bandwidth part configuration for the first transceiver node to a third bandwidth part configuration for the first transceiver node upon expiration of the common timer for the plurality of transceiver nodes; and
switching from a first bandwidth part configuration for a second transceiver node of the plurality of transceiver nodes to a second bandwidth part configuration for the second transceiver node upon expiration of the common timer for the plurality of transceiver nodes, wherein the third bandwidth part configuration for the first transceiver node and the second bandwidth part configuration for the second transceiver node comprise default bandwidth part configurations.

### Claim 7 (depends on 1)

The method of claim 1, further comprising:
receiving a configuration message that identifies a subset of the plurality of transceiver nodes as master transceiver nodes;
starting a common timer for the subset of the plurality of transceiver nodes based at least in part on switching from the first bandwidth part configuration for the first transceiver node to the second bandwidth part configuration for the first transceiver node;
receiving a communication from a transceiver node of the subset of the plurality of transceiver nodes; and
restarting the common timer for the subset of the plurality of transceiver nodes based at least in part on receiving the communication from the transceiver node of the subset of the plurality of transceiver nodes.

### Claim 8 (depends on 7)

The method of claim 7, further comprising:
switching from the second bandwidth part configuration for the first transceiver node to a third bandwidth part configuration for the first transceiver node upon expiration of the common timer for the subset of the plurality of transceiver nodes; and
switching from a first bandwidth part configuration for a transceiver node of the subset of the plurality of transceiver nodes to a second bandwidth part configuration for the transceiver node of the subset of the plurality of transceiver nodes upon expiration of the common timer for the subset of the plurality of transceiver nodes, wherein the third bandwidth part configuration for the first transceiver node and the second bandwidth part configuration for the transceiver node of the subset of the plurality of transceiver nodes comprise default bandwidth part configurations.

### Claim 9 (depends on 7)

The method of claim 7, further comprising:
receiving a communication from a transceiver node of the plurality of transceiver nodes that is outside the subset of the plurality of transceiver nodes; and
maintaining the common timer for the subset of the plurality of transceiver nodes after receiving the communication from the transceiver node that is outside the subset of the plurality of transceiver nodes.

### Claim 10 (depends on 1)

The method of claim 1, further comprising:
starting a plurality of separate timers for each of the plurality of transceiver nodes based at least in part on switching from the first bandwidth part configuration for the first transceiver node to the second bandwidth part configuration for the first transceiver node;
receiving a communication from the first transceiver node; and
restarting a separate timer at the first transceiver node based at least in part on receiving the communication from the first transceiver node.

### Claim 11 (depends on 10)

The method of claim 10, further comprising:
switching from the second bandwidth part configuration for the first transceiver node to a third bandwidth part configuration for the first transceiver node upon expiration of a first expiring timer of the plurality of separate timers; and
switching from a first bandwidth part configuration for a second transceiver node of the plurality of transceiver nodes to a second bandwidth part configuration for the second transceiver node upon expiration of the first expiring timer of the plurality of separate timers, wherein the third bandwidth part configuration for the first transceiver node and the second bandwidth part configuration for the second transceiver node comprise default bandwidth part configurations.

### Claim 12 (depends on 1)

The method of claim 1, further comprising:
maintaining a first bandwidth part configuration for a second transceiver node of the plurality of transceiver nodes after switching from the first bandwidth part configuration for the first transceiver node to the second bandwidth part configuration for the first transceiver node.

### Claim 13 (depends on 12)

The method of claim 12, further comprising:
starting a first timer for the first transceiver node based at least in part on switching from the first bandwidth part configuration for the first transceiver node to the second bandwidth part configuration for the first transceiver node.

### Claim 14 (depends on 13)

The method of claim 13, further comprising:
receiving a second control message from the second transceiver node;
switching from the first bandwidth part configuration for the second transceiver node to a second bandwidth part configuration for the second transceiver node;
starting a second timer for the second transceiver node based at least in part on switching from the first bandwidth part configuration for the second transceiver node to the second bandwidth part configuration for the second transceiver node; and
maintaining the first timer after switching from the first bandwidth part configuration for the second transceiver node to the second bandwidth part configuration for the second transceiver node.

### Claim 15

A method for wireless communications, comprising:
identifying a transceiver node cluster comprising a plurality of transceiver nodes configured for communication with a user equipment (UE);
transmitting, from a first transceiver node of the plurality of transceiver nodes, a control message; and
switching from a first bandwidth part configuration for the first transceiver node to a second bandwidth part configuration for the first transceiver node after transmitting the control message.

### Claim 16 (depends on 15)

The method of claim 15, wherein switching from the first bandwidth part configuration for the first transceiver node to the second bandwidth part configuration for the first transceiver node comprises:
switching from a first plurality of bandwidth part configurations for each transceiver node of the plurality of transceiver nodes to a second plurality of bandwidth part configurations for each transceiver node of the plurality of transceiver nodes after transmitting the control message.

### Claim 17 (depends on 16)

The method of claim 16, wherein each of the first plurality of bandwidth part configurations for each transceiver node of the plurality of transceiver nodes spans a same radio frequency bandwidth and wherein each of the second plurality of bandwidth part configurations for each transceiver node of the plurality of transceiver nodes spans a same frequency radio frequency bandwidth.

### Claim 18 (depends on 16)

The method of claim 16, further comprising:
transmitting a configuration message that identifies at least the first transceiver node as a master transceiver node, wherein switching from the first plurality of bandwidth part configurations for each transceiver node of the plurality of transceiver nodes to the second plurality of bandwidth part configurations for each transceiver node of the plurality of transceiver nodes is based at least in part on the first transceiver node being the master transceiver node.

### Claim 19 (depends on 15)

The method of claim 15, further comprising:
determining an expiration time of a common timer for the plurality of transceiver nodes based at least in part on switching from the first bandwidth part configuration for the first transceiver node to the second bandwidth part configuration for the first transceiver node;
transmitting a communication from any of the plurality of transceiver nodes; and
updating the expiration time based at least in part on transmitting the communication from any of the plurality of transceiver nodes.

### Claim 20 (depends on 19)

The method of claim 19, further comprising:
switching from the second bandwidth part configuration for the first transceiver node to a third bandwidth part configuration for the first transceiver node upon reaching the determined expiration time; and
switching from a first bandwidth part configuration for a second transceiver node of the plurality of transceiver nodes to a second bandwidth part configuration for the second transceiver node upon reaching the determined expiration time, wherein the third bandwidth part configuration for the first transceiver node and the second bandwidth part configuration for the second transceiver node comprise default bandwidth part configurations.

### Claim 21 (depends on 15)

The method of claim 15, further comprising:
transmitting a configuration message that identifies a subset of the plurality of transceiver nodes as master transceiver nodes;
determining an expiration time for a common timer for the subset of the plurality of transceiver nodes based at least in part on switching from the first bandwidth part configuration for the first transceiver node to the second bandwidth part configuration for the first transceiver node;
transmitting a communication from a transceiver node of the subset of the plurality of transceiver nodes; and
updating the expiration time based at least in part on transmitting the communication from the transceiver node of the subset of the plurality of transceiver nodes.

### Claim 22 (depends on 21)

The method of claim 21, further comprising:
switching from the second bandwidth part configuration for the first transceiver node to a third bandwidth part configuration for the first transceiver node upon reaching the determined expiration time; and
switching from a first bandwidth part configuration for a transceiver of the subset of the plurality of transceiver nodes to a second bandwidth part configuration for the transceiver of the subset of the plurality of transceiver nodes upon reaching the determined expiration time, wherein the third bandwidth part configuration for the first transceiver node and the second bandwidth part configuration for transceiver of the subset of the plurality of transceiver nodes comprise default bandwidth part configurations.

### Claim 23 (depends on 21)

The method of claim 21, further comprising:
transmitting a communication from a transceiver node of the plurality of transceiver nodes that is outside the subset of the plurality of transceiver nodes; and
refraining from updating the expiration time based at least in part on transmitting the communication from the transceiver node of the plurality of transceiver nodes that is outside the subset of the plurality of transceiver nodes.

### Claim 24 (depends on 15)

The method of claim 15, further comprising:
determining a plurality of expiration times for each of the plurality of transceiver nodes based at least in part on switching from the first bandwidth part configuration for the first transceiver node to the second bandwidth part configuration for the first transceiver node;
transmitting a communication from a transceiver node of the plurality of transceiver nodes; and
updating an expiration time for the transceiver node of the plurality of transceiver nodes based at least in part on transmitting the communication.

### Claim 25 (depends on 24)

The method of claim 24, further comprising:
switching from the second bandwidth part configuration for the first transceiver node to a third bandwidth part configuration for the first transceiver node upon reaching a first expiration time of the plurality of expiration times; and
switching from a first bandwidth part configuration for a second transceiver of the plurality of transceiver nodes to a second bandwidth part configuration for the second transceiver upon reaching the determined expiration time, wherein the third bandwidth part configuration for the first transceiver node and the second bandwidth part configuration for the second transceiver node comprise default bandwidth part configurations.

### Claim 26 (depends on 15)

The method of claim 15, further comprising:
maintaining a first bandwidth part configuration for a second transceiver node of the plurality of transceiver nodes after switching from the first bandwidth part configuration for the first transceiver node to the second bandwidth part configuration for the first transceiver node.

### Claim 27 (depends on 26)

The method of claim 26, further comprising:
determining a first expiration time at the first transceiver node based at least in part on switching from the first bandwidth part configuration for the first transceiver node to the second bandwidth part configuration for the first transceiver node.

### Claim 28 (depends on 27)

The method of claim 27, further comprising:
transmitting a second control message from the second transceiver node;
switching from the first bandwidth part configuration for the second transceiver node to a second bandwidth part configuration for the second transceiver node;
determining a second expiration time at the second transceiver node based at least in part on switching from the first bandwidth part configuration for the second transceiver node to the second bandwidth part configuration for the second transceiver node; and
refraining from updating the first expiration time after switching from the first bandwidth part configuration for the second transceiver node to the second bandwidth part configuration for the second transceiver node.

### Claim 29

An apparatus for wireless communications at a user equipment (UE), comprising:
a processor,
memory in electronic communication with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
identify a transceiver node cluster comprising a plurality of transceiver nodes configured for communication with the UE;
receive a control message from a first transceiver node of the plurality of transceiver nodes; and
switch from a first bandwidth part configuration for the first transceiver node to a second bandwidth part configuration for the first transceiver node based at least in part on the control message.

### Claim 30

An apparatus for wireless communications, comprising:
a processor,
memory in electronic communication with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
identify a transceiver node cluster comprising a plurality of transceiver nodes configured for communication with a user equipment (UE);
transmit, from a first transceiver node of the plurality of transceiver nodes, a control message; and
switch from a first bandwidth part configuration for the first transceiver node to a second bandwidth part configuration for the first transceiver node after transmitting the control message.