# US 2019/0246407 A1 · Terminal operation method in accordance with uplink sps in wireless communication system and terminal using same

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- Number: US 2019/0246407 A1
- Document ID: US20190246407A1
- Status: Published application
- Kind: A1
- Application number: 16/389,120
- Filed: 2019-04-19
- Published: 2019-08-08
- Earliest claimed: 2016-04-01
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Seungmin LEE; Hanbyul SEO; Myoungseob KIM; Youngdae LEE; Jaewook LEE
- Web page: https://patentgrep.com/patent/US20190246407A1

## CPC

- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 5/0042: {Intra-user or intra-terminal allocation}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority}
- H04L 5/0082: {at predetermined intervals}
- H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information}
- H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W 72/044: based on the type of the allocated resource
- H04W 72/12: Wireless traffic scheduling
- H04W 72/121: for groups of terminals or users
- H04W 72/20: Control channels or signalling for resource management
- H04W 72/53: based on regulatory allocation policies
- H04W 72/535: {based on resource usage policies}
- H04W 72/56: based on priority criteria
- H04W 74/04: Scheduled access (hybrid access H04W74/02)
- H04W 76/14: Direct-mode setup
- H04W 76/30: Connection release
- H04W 84/04: Large scale networks; Deep hierarchical networks
- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- 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

Provided are an operation method in accordance with uplink semi-persistent scheduling (SPS) of a terminal in a wireless communication system and a terminal using the method. The method is characterized by: receiving, from a base station, downlink control information (DCI) for indicating activation or release of uplink SPS; and decoding the DCI on the basis of a first radio network temporary identifier (RNTI) or a second RNTI. If the DCI is a first DCI for SPS for transmitting a signal to the base station, the DCI is decoded on the basis of the first RNTI, and, if the DCI is a second DCI for SPS for transmitting a vehicle-to-everything (V2X) signal, the DCI is decoded on the basis of the second RNTI. And the first RNTI and second RNTI are RNTIs that are different from each other.

## Claims

### Claim 1

A method of operating a user equipment (UE) according to uplink semi-persistent scheduling (SPS) in a wireless communication system, the method comprising:
receiving, from a base station, downlink control information (DCI) that has a DCI format 0 and that instructs activation of the uplink SPS from a base station;
determining whether the DCI is decodable using a first radio network temporary identifier (RNTI);
based on a determination that the DCI is decodable using the first RNTI: determining that the DCI comprises an index of an uplink SPS configuration; and
based on a determination that the DCI is not decodable using the first RNTI: determining that the DCI comprises a cyclic shift value for a demodulation-reference signal (DM-RS).

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
based on the determination that the DCI is decodable using the first RNTI: (i) decoding the DCI using the first RNTI, and (ii) determining, based on the decoded DCI, a DM-RS cyclic shift field that indicates the index of the uplink SPS configuration; and
based on the determination that the DCI is not decodable using the first RNTI: (i) decoding the DCI using a second RNTI different from the first RNTI, and (ii) determining, based on the decoded DCI, the DM-RS cyclic shift field that indicates the cyclic shift value for the DM-RS.

### Claim 3 (depends on 1)

The method of claim 1, wherein receiving the DCI comprises:
receiving the DCI through a physical downlink control channel (PDCCH) or enhanced PDCCH (EPDCCH).

### Claim 4 (depends on 1)

The method of claim 1, wherein the DCI is a first DCI, and
wherein the method further comprises receiving, from the base station, a second DCI that has the DCI format 0 and that instructs release of the uplink SPS, wherein the first DCI and the second DCI have a same bit size.

### Claim 5 (depends on 1)

The method of claim 1, wherein the DCI comprises a DM-RS cyclic shift field of 3 bits that indicates, based on whether the DCI is decodable using the first RNTI, either (i) the index of the uplink SPS configuration, or (ii) the cyclic shift value for the DM-RS.

### Claim 6 (depends on 1)

The method of claim 1, wherein the index of the uplink SPS configuration enumerates 8 possible uplink SPS configurations.

### Claim 7 (depends on 2)

The method of claim 2, wherein the first RNTI is an SPS V-RNTI for scheduling Vehicle-to-Everything (V2X) sidelink communication, and
wherein the second RNTI is an SPS cell-RNTI (C-RNTI).

### Claim 8 (depends on 1)

The method of claim 1, further comprising:
based on the determination that the DCI is decodable using the first RNTI, transmitting a V2X signal to a vehicle or a base station according to the index of the uplink SPS configuration that was determined from the DCI.

### Claim 9 (depends on 1)

The method of claim 1, further comprising:
validating the DCI as having a DCI format for V2X sidelink SPS activation or release, based on at least one field of the DCI.

### Claim 10

A user equipment (UE) configured to perform uplink semi-persistent scheduling (SPS) in a wireless communication system, the UE comprising:
a transceiver;
at least one processor; and
at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:
receiving, via the transceiver and from a base station, downlink control information (DCI) that has a DCI format 0 and that instructs activation of the uplink SPS;
determining whether the DCI is decodable using a first radio network temporary identifier (RNTI);
based on a determination that the DCI is decodable using the first RNTI: determining that the DCI comprises an index of an uplink SPS configuration; and
based on a determination that the DCI is not decodable using the first RNTI: determining that the DCI comprises a cyclic shift value for a demodulation-reference signal (DM-RS).

### Claim 11 (depends on 10)

The user equipment of claim 10, wherein the operations further comprise:
based on the determination that the DCI is decodable using the first RNTI: (i) decoding the DCI using the first RNTI, and (ii) determining, based on the decoded DCI, a DM-RS cyclic shift field that indicates the index of the uplink SPS configuration; and
based on the determination that the DCI is not decodable using the first RNTI: (i) decoding the DCI using a second RNTI different from the first RNTI, and (ii) determining, based on the decoded DCI, the DM-RS cyclic shift field that indicates the cyclic shift value for the DM-RS.

### Claim 12 (depends on 10)

The user equipment of claim 10, wherein receiving the DCI comprises:
receiving the DCI through a physical downlink control channel (PDCCH) or enhanced PDCCH (EPDCCH).

### Claim 13 (depends on 10)

The user equipment of claim 10, wherein the DCI is a first DCI, and
wherein the operations further comprise receiving, from the base station, a second DCI that has the DCI format 0 and that instructs release of the uplink SPS, wherein the first DCI and the second DCI have a same bit size.

### Claim 14 (depends on 10)

The user equipment of claim 10, wherein the DCI comprises a DM-RS cyclic shift field of 3 bits that indicates, based on whether the DCI is decodable using the first RNTI, either (i) the index of the uplink SPS configuration, or (ii) the cyclic shift value for the DM-RS.

### Claim 15 (depends on 10)

The user equipment of claim 10, wherein the index of the uplink SPS configuration enumerates 8 possible uplink SPS configurations.

### Claim 16 (depends on 11)

The user equipment of claim 11, wherein the first RNTI is an SPS V-RNTI for scheduling Vehicle-to-Everything (V2X) sidelink communication, and
wherein the second RNTI is an SPS cell-RNTI (C-RNTI).

### Claim 17 (depends on 10)

The user equipment of claim 10, wherein the operations further comprise:
based on the determination that the DCI is decodable using the first RNTI, transmitting a V2X signal to a vehicle or a base station according to the index of the uplink SPS configuration that was determined from the DCI.

### Claim 18 (depends on 10)

The user equipment of claim 10, wherein the operations further comprise:
validating the DCI as having a DCI format for V2X sidelink SPS activation or release, based on at least one field of the DCI.