# US 2019/0357085 A1 · Bandwidth part (bwp) switching

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- Number: US 2019/0357085 A1
- Document ID: US20190357085A1
- Status: Published application
- Kind: A1
- Application number: 16/417,992
- Filed: 2019-05-21
- Published: 2019-11-21
- Earliest claimed: 2018-05-21
- Assignees: Intel Corporation
- Applicants: Intel Corporation
- Inventors: Andrey Chervyakov; Rui Huang; Yang Tang; Jie Cui; Yuhan Zhou
- Web page: https://patentgrep.com/patent/US20190357085A1

## CPC

- H04W 16/14: Spectrum sharing arrangements {between different networks}
- H04W 28/20: Negotiating bandwidth
- H04L 1/0009: {by adapting the channel coding (H04L1/1812 takes precedence)}
- H04L 5/0012: {Hopping in multicarrier systems}
- 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
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH}
- H04W 36/20: for optimising the interference level
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- 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)

## Abstract

User equipment (UE) includes processing circuitry coupled to memory. To configure the UE for active bandwidth part (BWP) switching, the processing circuitry is to decode RRC signaling configuring a plurality of BWPs for the UE. The RRC signaling further includes an indicator for an initial BWP of the plurality of BWPs for initial use by the UE as an active BWP. DCI received on a PDCCH is decoded, which includes a BWP indicator for switching the active BWP from the initial BWP to another BWP of the plurality of BWPs. RF and baseband parameters to switch the active BWP from the initial BWP to the another BWP are reconfigured. Reconfiguring the RF and baseband parameters cause an interruption of one or more slots of a serving cell of the UE. A starting time of the interruption is within a time duration of a BWP switching delay supported by the UE.

## Claims

### Claim 1

An apparatus of a user equipment (UE), the apparatus comprising:
processing circuitry, wherein to configure the UE for active bandwidth part (BWP) switching, the processing circuitry is to:
decode radio resource control (RRC) signaling configuring a plurality of BWPs for the UE, the RRC signaling further including an indicator for an initial BWP of the plurality of BWPs for initial use by the UE as an active BWP;
decode downlink control information (DCI) received on a physical downlink control channel (PDCCH), the DCI including a BWP indicator for switching the active BWP from the initial BWP to another BWP of the plurality of BWPs; and
reconfigure radio frequency (RF) and baseband parameters to switch the active BWP from the initial BWP to the another BWP, wherein reconfiguring the RF and baseband parameters cause an interruption of one or more slots of a serving cell of the UE, and wherein a starting time of the interruption is within a time duration of a BWP switching delay supported by the UE; and
memory coupled to the processing circuitry, the memory configured to store the RRC signaling and the DCI.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the processing circuitry is to:
perform encoding of uplink data while decoding the DCI, the uplink data for transmission within the serving cell.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the processing circuitry is to:
perform decoding of downlink data while decoding the DCI, the downlink data received from a base station within the serving cell.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein to reconfigure the RF and baseband parameters, the processing circuitry is to:
perform phase locked loop (PLL) resettling and synthesizer reprogramming associated with a transceiver circuit of the UE, based on a center frequency of the active BWP after the switching.

### Claim 5 (depends on 1)

The apparatus of claim 1, wherein to reconfigure the RF and baseband parameters, the processing circuitry is to:
adjust a center frequency of a transceiver circuit of the UE to a center frequency of the active BWP after the switching.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein to reconfigure the RF and baseband parameters, the processing circuitry is to:
adjust sub-carrier spacing (SCS) for uplink and downlink communications based on BWP SCS configuration information in the RRC signaling.

### Claim 7 (depends on 1)

The apparatus of claim 1, wherein the BWP indicator is a BWP index of the another BWP of the plurality of BWPs.

### Claim 8 (depends on 1)

The apparatus of claim 1, wherein the DCI is received in slot N, reconfiguring of the RF and baseband parameters concludes at an end of slot (N+M+1), and the BWP switching delay is from a start of slot N to the end of slot (N+M+1), wherein N and M are integers.

### Claim 9 (depends on 8)

The apparatus of claim 8, wherein the interruption starts at a time instance between an end of slot N and the end of slot (N+M+1).

### Claim 10 (depends on 1)

The apparatus of claim 1, further comprising transceiver circuitry coupled to the processing circuitry; and, one or more antennas coupled to the transceiver circuitry.

### Claim 11

A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a base station (BS) operating in a 5G network, the instructions to configure the one or more processors for active bandwidth part (BWP) switching during New Radio (NR) communications and to cause the BS to:
encode radio resource control (RRC) signaling configuring a plurality of BWPs for a user equipment (UE), the RRC signaling further including an indicator for an initial BWP of the plurality of BWPs for initial use by the UE as an active BWP; and
encode downlink control information (DCI) for transmission to the UE on a physical downlink control channel (PDCCH), the DCI including a BWP indicator for switching the active BWP from the initial BWP to another BWP of the plurality of BWPs;
wherein the RRC signaling and the DCI further cause reconfiguration of radio frequency (RF) and baseband parameters for switching the active BWP from the initial BWP to the another BWP, wherein reconfiguring the RF and baseband parameters cause an interruption of one or more slots of a serving cell of the UE, and wherein a starting time of the interruption is within a time duration of a BWP switching delay supported by the UE.

### Claim 12 (depends on 11)

The non-transitory computer-readable storage medium of claim 11, wherein the BWP indicator is a BWP index of the another BWP of the plurality of BWPs.

### Claim 13

A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a user equipment (UE) operating in a 5G network, the instructions to configure the one or more processors for active bandwidth part (BWP) switching during New Radio (NR) communications and to cause the UE to:
decode radio resource control (RRC) signaling configuring a plurality of BWPs for the UE, the RRC signaling further including an indicator for an initial BWP of the plurality of BWPs for initial use by the UE as an active BWP;
decode downlink control information (DCI) received on a physical downlink control channel (PDCCH), the DCI including a BWP indicator for switching the active BWP from the initial BWP to another BWP of the plurality of BWPs; and
reconfigure radio frequency (RF) and baseband parameters to switch the active BWP from the initial BWP to the another BWP, wherein reconfiguring the RF and baseband parameters cause an interruption of one or more slots of a serving cell of the UE, and wherein a starting time of the interruption is within a time duration of a BWP switching delay supported by the UE.

### Claim 14 (depends on 13)

The non-transitory computer-readable storage medium of claim 13, wherein the instructions cause the UE to:
perform encoding of uplink data while decoding the DCI, the uplink data for transmission within the serving cell.

### Claim 15 (depends on 13)

The non-transitory computer-readable storage medium of claim 13, wherein the instructions cause the UE to:
perform decoding of downlink data while decoding the DCI, the downlink data received from a base station within the serving cell.

### Claim 16 (depends on 13)

The non-transitory computer-readable storage medium of claim 13, wherein to reconfigure the RF and baseband parameters, the instructions cause the UE to:
perform phase locked loop (PLL) resettling and synthesizer reprogramming associated with a transceiver circuit of the UE, based on a center frequency of the active BWP after the switching.

### Claim 17 (depends on 13)

The non-transitory computer-readable storage medium of claim 13, wherein to reconfigure the RF and baseband parameters, the instructions cause the UE to:
adjust a center frequency of a transceiver circuit of the UE to a center frequency of the active BWP after the switching; and
adjust sub-carrier spacing (SCS) for uplink and downlink communications based on BWP SCS configuration information in the RRC signaling.

### Claim 18 (depends on 13)

The non-transitory computer-readable storage medium of claim 13, wherein the BWP indicator is a BWP index of the another BWP of the plurality of BWPs.

### Claim 19 (depends on 13)

The non-transitory computer-readable storage medium of claim 13, wherein the DCI is received in slot N, reconfiguring of the RF and baseband parameters concludes at an end of slot (N+M+1), and the BWP switching delay is from a start of slot N to the end of slot (N+M+1), wherein N and M are integers.

### Claim 20 (depends on 19)

The non-transitory computer-readable storage medium of claim 19, wherein the interruption starts at a time instance between an end of slot N and the end of slot (N+M+1).