# US 10,873,935 B2 · Method and apparatus for transmitting terminal support data for SPS in wireless communication system

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- Number: US 10,873,935 B2
- Document ID: US10873935B2
- Status: Granted
- Kind: B2
- Application number: 16/338,419
- Filed: 2017-09-28
- Published: 2019-10-10
- Granted: 2020-12-22
- Earliest claimed: 2016-09-30
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Youngdae Lee; Jaewook Lee
- Web page: https://patentgrep.com/patent/US10873935B2

## CPC

- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

User equipment (UE) can transmit UE support data for semi-persistent scheduling (SPS) to an evolved NodeB (eNB) in order to effectively allocate SPS resources for vehicle-to-everything (V2X) communication. The release of SPS can be directed by means of the UE support data. More specifically, a terminal receives, from an eNB, a plurality of SPS configurations for a plurality of logical channels, and transmits, to the eNB, UE support data comprising an SPS release directive for any one logical channel from among the plurality of logical channels.

## Claims

### Claim 1

A method for indicating a semi-persistent scheduling (SPS) release by a user equipment (UE) in a wireless communication system, the method comprising:
selecting a cell on an evolved NodeB (eNB);
receiving, from the cell, a radio resource control (RRC) connection reconfiguration;
receiving, from the cell, a plurality of SPS configurations for a plurality of logical channels; and
transmitting, to the cell, UE assistance information including an SPS release indication for any one logical channel among the plurality of logical channels in response to the RRC connection reconfiguration,
wherein the UE assistance information includes a packet size for the any one logical channel, and
wherein the packet size for the any one logical channel corresponds to a total amount of data available for transmission for the any one logical channel.

### Claim 2 (depends on 1)

The method of claim 1, wherein the UE assistance information further includes a logical channel identifier (LCD), an SPS periodicity and an SPS timing offset, for the any one logical channel.

### Claim 3 (depends on 2)

The method of claim 2, wherein the SPS release indication is indicated by the SPS periodicity which is set to 0.

### Claim 4 (depends on 2)

The method of claim 2, wherein the SPS release indication is indicated by the LCD which is set to a specific value.

### Claim 5 (depends on 2)

The method of claim 2, wherein the SPS release indication is indicated by the packet size which is set to 0.

### Claim 6 (depends on 2)

The method of claim 2, wherein a scheduling request (SR) prohibit timer and a SR masking for the any one logical channel are configured.

### Claim 7 (depends on 2)

The method of claim 2, wherein the LCID is mapped to a ProSe per-packet priority (PPPP) by a configuration by the eNB or a pre-configuration.

### Claim 8 (depends on 1)

The method of claim 1, wherein the UE assistance information is transmitted only when there is data available for transmission in a sidelink buffer.

### Claim 9

A user equipment (UE) in a wireless communication system, the UE comprising:
a memory;
a transceiver; and
a processor, operably coupled to the memory and the transceiver, and configured to:
select a cell on an evolved NodeB (eNB);
control the transceiver to receive, from the cell, a radio resource control (RRC) connection reconfiguration;
control the transceiver to receive, from the cell, a plurality of semi-persistent scheduling (SPS) configurations for a plurality of logical channels; and
control the transceiver to transmit, to the cell, UE assistance information including an SPS release indication for any one logical channel among the plurality of logical channels in response to the RRC connection reconfiguration,
wherein the UE assistance information includes a packet size for the any one logical channel, and
wherein the packet size for the any one logical channel corresponds to a total amount of data available for transmission for the any one logical channel.

### Claim 10 (depends on 9)

The UE of claim 9, wherein the UE assistance information further includes a logical channel identifier (LCD), an SPS periodicity and an SPS timing offset, for the any one logical channel.

### Claim 11 (depends on 10)

The UE of claim 10, wherein the SPS release indication is indicated by the SPS periodicity which is set to 0.

### Claim 12 (depends on 10)

The UE of claim 10, wherein the SPS release indication is indicated by the LCD which is set to a specific value.

### Claim 13 (depends on 10)

The UE of claim 10, wherein the SPS release indication is indicated by the packet size which is set to 0.