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Method and apparatus for transmitting terminal support data for SPS in wireless communication system

專利號
US10873935B2
公開日期
2020-12-22
申請人
LG ELECTRONICS INC.（KR Seoul）
發(fā)明人
Youngdae Lee; Jaewook Lee
IPC分類
H04W72/04
技術(shù)領(lǐng)域
ue,sps,assistance,enb,sidelink,channel,v2x,logical,persistent,ul
地域： Seoul

摘要

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.

說明書

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is the National Stage filing under 35 U.S.C. 371 of International Application No. PCT/KR2017/0010852, filed on Sep. 28, 2017, which claims the benefit of U.S. Provisional Application No. 62/402,067, filed on Sep. 30, 2016, the contents of which are all hereby incorporated by reference herein in their entirety.

BACKGROUND OF THE INVENTION Field of the Invention

The present invention relates to wireless communication, and more particularly, to a method and apparatus for transmitting user equipment (UE) assistance information for semi-persistent scheduling (SPS) in a wireless communication system.

Related Art

3rd generation partnership project (3GPP) long-term evolution (LTE) is a technology for enabling high-speed packet communications. Many schemes have been proposed for the LTE objective including those that aim to reduce user and provider costs, improve service quality, and expand and improve coverage and system capacity. The 3GPP LTE requires reduced cost per bit, increased service availability, flexible use of a frequency band, a simple structure, an open interface, and adequate power consumption of a terminal as an upper-level requirement.

權(quán)利要求

1
What is claimed is: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; andtransmitting, 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, andwherein 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.2. 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.3. The method of claim 2, wherein the SPS release indication is indicated by the SPS periodicity which is set to 0.4. The method of claim 2, wherein the SPS release indication is indicated by the LCD which is set to a specific value.5. The method of claim 2, wherein the SPS release indication is indicated by the packet size which is set to 0.6. The method of claim 2, wherein a scheduling request (SR) prohibit timer and a SR masking for the any one logical channel are configured.7. 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.8. The method of claim 1, wherein the UE assistance information is transmitted only when there is data available for transmission in a sidelink buffer.9. A user equipment (UE) in a wireless communication system, the UE comprising:a memory;a transceiver; anda 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; andcontrol 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, andwherein 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.10. 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.11. The UE of claim 10, wherein the SPS release indication is indicated by the SPS periodicity which is set to 0.12. The UE of claim 10, wherein the SPS release indication is indicated by the LCD which is set to a specific value.13. The UE of claim 10, wherein the SPS release indication is indicated by the packet size which is set to 0.
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