KR20170109906A - Method and apparatus for uplink transmission in sidelink gap in wireless communication system - Google Patents

Abstract

A method and apparatus for uplink transmission in a side link gap in a wireless communication system. A method for performing UL (Semi-Persistent Scheduling) transmission according to an aspect of the present invention includes: receiving UL SPS setting information and side link (SL) gap setting information from a base station; And receiving, from the base station, based on at least one of a type of the UL SPS sub-frame or a type of the SL gap when an SL gap in a UL SPS subframe indicated by the UL SPS setting information is set Determining whether to process the UL grant that is based on the UL grant or whether to perform UL SPS transmission based on the UL grant.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method and apparatus for uplink transmission in a side link gap in a wireless communication system,

The present invention relates to a wireless communication system, and more particularly to a recording medium in which a method, apparatus, software, or software for uplink transmission in a side link gap is stored.

The side link corresponds to a UE-to-UE interface supporting discovery and communication for direct communication between terminals. The side link may use uplink resources and use a physical channel structure similar to uplink transmission.

Meanwhile, the base station can allocate resources for uplink transmission and potential retransmission in advance. This is referred to as uplink semi-persistent scheduling (SPS).

There may occur a case where a subframe in which the side link gap is set and a subframe in which the uplink SPS transmission is set overlap (or overlap) due to the introduction of the side link. However, in this case, none.

The present invention provides a method and apparatus for processing an uplink grant that establishes uplink SPS transmissions in a subframe that overlaps a side link gap.

The present invention provides a method and apparatus for handling uplink SPS HARQ (Hybrid Automatic Repeat Request) retransmission in a subframe overlapping a side link gap.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

According to an aspect of the present invention, a method of performing UL (Semi-Persistent Scheduling) transmission in an SS in a wireless communication system may be provided. The method includes receiving UL SPS setup information and side link (SL) gap setup information from a base station; And receiving, from the base station, based on at least one of a type of the UL SPS sub-frame or a type of the SL gap when an SL gap in a UL SPS subframe indicated by the UL SPS setting information is set Determining whether to process the UL grant that is based on the UL grant or whether to perform UL SPS transmission based on the UL grant.

The features briefly summarized above for the present invention are only illustrative aspects of the detailed description of the invention which are described below and do not limit the scope of the invention.

According to the present invention, a scheme for handling uplink SPS transmission and HARQ retransmission in a subframe overlapping with a side link gap can be provided.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention, illustrate various embodiments of the invention and, together with the description, serve to explain the principles of the invention.
1 is a view for explaining an UL grant receiving operation during an SL gap according to an example of the present invention.
2 is a view for explaining UL HARQ process operation during SL gap according to an example of the present invention.
3 is a diagram for explaining operations of a terminal according to an example of the present invention.
4 is a diagram for explaining a configuration of a wireless device according to the present invention.

Hereinafter, the contents related to the present invention will be described in detail with reference to exemplary drawings and embodiments. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present disclosure rather unclear.

In addition, the present invention will be described with respect to a wireless communication network. Operations performed in the wireless communication network may be performed in a process of controlling a network and transmitting or receiving a signal from a system (e.g., a base station) And may be performed in a process of transmitting or receiving a signal from a terminal coupled to the wireless network.

That is, it is apparent that various operations performed for communication with a terminal in a network composed of a plurality of network nodes including a base station can be performed by a network node other than the base station or the base station. A 'base station (BS)' may be replaced by a term such as a fixed station, a Node B, an eNode B (eNB), an access point (AP) In addition, 'terminal' may be replaced with terms such as User Equipment (UE), Mobile Station (MS), Mobile Subscriber Station (MSS), Subscriber Station (SS) .

The terms used to describe the embodiments of the present invention may be described by 3GPP LTE or LTE-Advanced (LTE-Advanced) standards documents, except where explicitly stated to be used in different meanings. It should be noted, however, that this is only for economy and clarity of explanation, and that the embodiments of the present invention are not limited to apply only to systems conforming to 3GPP LTE or LTE-A or subsequent standards.

First, SPS and SL (SideLink) gap setting will be described.

Table 1 shows a part related to the uplink SPS setting among the SPS configuration information elements (SPS-Config) provided through the upper layer (e.g., RRC layer) signaling.

Among the fields included in SPS-ConfigUL in Table 1, the semiPersistSchedIntervalUL parameter is defined as shown in Table 2 below. That is, the subframe for uplink SPS transmission or retransmission may be preset according to the period indicated by the semiPersistSchedIntervalUL parameter.

Table 3 below shows the SL Gap Configuration (SL-GapConfig) information element provided via upper layer (e.g., RRC layer) signaling. The SL gap corresponds to a time interval allocated by the base station to receive (or monitor) or transmit the side link discovery signal on the other carrier or PLMN. In addition, the SL gap can be divided into a reception gap (Rx gap) and a transmission gap (Tx gap). The reception gap corresponds to a section for monitoring a neighboring PLMN (Public Land Mobile Network) or a carrier / inter-carrier / cell discovery signal. The transmission gap corresponds to a period for transmitting a neighbor PLMN or a carrier / inter-cell discovery signal.

Of the fields included in the SL-GapConfig in Table 3, gapSubframeBitmap is defined as shown in Table 4 below. That is, the subframe in which the SL gap exists can be indicated in the form of a bitmap.

Next, reception of UL grant (UL Grant) will be described.

In order to transmit a UL-SCH (Uplink-Shared Channel), which is a transport channel corresponding to a Physical Uplink Shared Channel (PUSCH) in the physical layer, a MAC entity must have a valid UL grant. However, in the case of non-adaptive HARQ retransmission, the UL-SCH can be retransmitted using the transmission parameters of the previous transmission as it is without the UL grant.

A valid UL grant may be dynamically provided to a terminal by a base station via a Physical Downlink Control Channel (PDCCH), or may be provided via RAR (Random Access Response), semi-persistently, May be set. To perform the requested transmission, the MAC layer receives HARQ information at a lower layer (e.g., physical (PHY) layer). When UL spatial multiplexing is set in the PHY layer (i.e., when UL MIMO TM is set), the MAC layer can receive up to two UL grants and each UL grant May receive their HARQ processes from the PHY during the same TTI (Transmission Time Interval).

Table 5 below shows an operation for processing a UL grant received by a MAC entity for a certain TTI.

In Table 5, the serving cell is a SpCell (Special Cell). For this TTI, one UL grant is transmitted to the SpCell PDCCH for the SPC C-RNTI (Cell-Radio Network Temporary Identifier) of the MAC entity. When the value of the NDI (New Data Indicator) of the received HARQ information is 1 in the case of receiving, in the case of performing the adpative retransmission for the previous UL-SCH transmission instead of considering the new SPS allocation PDCCH . Here, the SpCell includes a MCG (Primary Cell) or a PSCell (Primary SCell) in a dual connectivity operation mode in which a MCG (Master Cell Group) and a SCG (Secondary Cell Group) (PCCell) or SCC (Primary Secondary Cell).

In Table 5, when the value of the NDI of the received HARQ information is 0, it means that the UE considers the SPS-allocated PDCCH as being valid for SPS transmission as shown in Table 6 below.

In Table 5, the operation of storing the UL grant and related HARQ information as a configured UL grant, other than when the PDCCH content indicates an SPS release, indicates that the PDCCH content is UL It means that the UL grant information for the SPS transmission is stored and considered as the set UL grant.

In Table 5, SPS activation is instructed by the PDCCH, or re-initialization is performed in the already activated state. Therefore, it is possible to perform an operation of applying the set UL grant from the TTI for UL-SCH transmission indicated by the corresponding UL grant. For example, when the SPS is already activated, if the corresponding UL grant is received, it means to re-initialize. Otherwise, the UL grant activates the SPS transmission and the control information for the UL-SCH transmission If instructed, initialization can be considered.

In Table 5, the operation of considering that the NDI bits of the corresponding HARQ process are toggled means that it considers the new SPS transmission.

The operation of transmitting the UL grant and related HARQ information set in Table 5 to the HARQ entity of this TTI means that the established UL grant and the HARQ information associated with the UL grant are delivered to the HARQ entity for the corresponding TTI.

In Table 5, when the serving cell is SpCell and the UL grant for the current TTI is already set for the SpCell, the SPS allocation PDCCH is previously received and the UL-SCH transmission If any) can be performed.

Table 6 below shows the validation operation of PDCCH or EPDCCH (Enhanced PDCCH) for SPS.

The PDCCH / EPDCCH can be validated when all the specific fields in the downlink control information (DCI) transmitted through some PDCCH / EPDCCH are set according to Table 7 or Table 8 below. Table 7 shows the specific fields for SPS activation PDCCH / EPDCCH validation, and Table 8 shows specific fields for SPS release PDCCH / EPDCCH validation. When the validation is performed, the terminal can consider the received DCI information as valid SPS activation or release. If validation is not performed, the received DCI format can be regarded as having an unmatched CRC (Cyclic Redundancy Check).

Table 9 below shows UL SPS operation.

In Table 9, when twoIntervalsConfig is enabled by an upper layer, it means that enhanced Interference Management and Traffic Adaptation (eIMTA) is set. In a TDD network, UEs with eIMTA set can have two subframe sets, and the twoIntervalsConfig corresponds to each subframe set. Here, the description of Subframe_Offset is described in Table 10.

1 is a view for explaining an UL grant receiving operation during an SL gap according to an example of the present invention.

SPS subframes can be set with a certain period and offset by SPS-ConfigUL as shown in Table 1 above.

On the other hand, subframes corresponding to the SL gap can be set by bitmap signaling corresponding to a specific radio frame length according to the SL-GapConfig shown in Table 3 above.

1, an UL grant is received through a PDCCH / EPDCCH scrambled with an SPS C-RNTI in a downlink sub-frame (DL SF) ahead of the SPS subframe (SPS SF # 0) of index 0 in SpCell . In this case, k is performed in a serving cell in which a PDCCH and a data transmission channel (eg PDSCH / PUSCH) that carry an UL grant are different from each other in a frequency division duplex (FDD) serving cell, a TDD- 4 in an FDD serving cell having a TDD (frame structure type 2) scheduling serving cell (i.e., a serving cell in which a (E) PDCCH carrying UL grant is transmitted) set and operated in a TDD serving cell, You can have a value according to -DL configuration. In addition, it may have a value according to the reference UL-DL configuration in an FDD serving cell having a scheduling cell having an inter-band TDD CA TDD serving cell or a TDD frame structure type 2 structure in a TDD-FDD CA setup. 1, the received UL grant provides information on the SPS PUSCH transmission in the SPS SF # 0, and assumes that the NDI field value in the received HARQ information is 0 (i.e., reception of UL grant with NDI = 0).

The SpCell (special cell) is a special secondary serving cell (pSCell) set in the SeNB (secondary eNB) in PCell or Dual-connectivity setting as described above. In the present invention, it is assumed that the SPC transmission is a serving cell do.

Case 1

In this case 1, in a case where one UL grant for the current TTI is received by the PDCCH of SpCell for the SPS C-RNTI of the MAC entity and instructs UL-SCH transmission, the current TTI (for example, Defines an operation when the SPS SF # 0 overlaps (or overlaps) with the SL gap.

Here, when the SL gap overlapping with the SPS SF is an Rx gap, the UL grant processing operation has a higher priority than the Rx gap operation, and the Rx gap operation can be ignored. That is, the operation of monitoring the neighbor PLMN or carrier / cell-to-cell discovery signal defined to perform in the Rx gap may not be performed if the Rx gap overlaps with the SPS SF.

Also, in the Rx gap, the monitoring operation for the DL channel in the DL carrier for LTE DL reception is not performed. If the Rx gap overlaps with the SPS SF and the operation defined in the Rx gap (i.e., neighbor PLMN or carrier / cell-to-cell discovery signal monitoring) is not performed, whether to perform the LTE DL carrier monitoring operation is unclear. According to the present invention, if the Rx gap overlaps the SPS SF, it is defined that the LTE DL carrier monitoring operation is not performed.

More specifically, one UL grant for this TTI is received on the PDCCH of the SpCell for the SPS C-RNTI of the MAC entity and indicates UL-SCH transmission, and the current TTI (for example, SPS SF # 0) overlap with the SL gap set to the Rx gap, the MAC entity can process the corresponding UL grant for this TTI and perform UL-SCH transmission at the same time, but the neighbor PLMN or carrier / Cell-to-cell discovery signal, and does not perform monitoring for any DL channel in the DL carrier for LTE DL reception.

Here, the operation of processing the UL grant may include the following operations.

If the PDCCH content does not correspond to the SPS release, the UE stores the HARQ information associated with the UL grant information as a set UL grant.

- If the SPS is not activated, initialize the set UL grant to start at this TTI while activating the SPS transmission from this TTI by UL grant for the received SPS transmission, or if the SPS has already been activated, Re-initializing the established UL grant to start with, i.e., re-initializing the previously set UL grant to the received UL grant.

- Consider the NDI bit as being toggled (i.e., considered a new transmission).

- Transmit the set UL grant and its associated HARQ information to the corresponding HARQ entity during this TTI.

SPS SF If the overlapping SL gap is a Tx gap, the UL grant processing operation can be ignored during the Tx gap. That is, the operation of transmitting the neighbor PLMN or the carrier / inter-cell discovery signal defined to perform in the Tx gap can perform the discovery transmission during the Tx gap without being affected by the UL grant processing operation and the UL-SCH transmission. On the other hand, in the LTE UL HARQ operation, the MAC entity processes the set UL grant but does not instruct UL-SCH transmission. That is, the PHY should not perform the PUSCH transmission during the corresponding Tx gap.

Also, in the Tx gap, no monitoring operation is performed on the DL channel / signal (e.g., PDCCH, PDSCH, PMCH, PHICH, CRS, DRS, CSI-RS, PRS, etc.) in the DL carrier for LTE DL reception. If the Tx gap overlaps with the SPS SF and the operation defined in the Tx gap (that is, transmission of the neighbor PLMN or carrier / cell-to-cell discovery signal) is performed as described above, whether to perform the LTE DL carrier monitoring operation is unclear Do. According to the present invention, it is defined that the LTE DL carrier monitoring operation is not performed when the Tx gap overlaps with the SPS SF.

More specifically, one UL grant for this TTI is received on the PDCCH of the SpCell for the SPS C-RNTI of the MAC entity and indicates UL-SCH transmission, and the current TTI (for example, SPS SF # 0) overlaps with the SL gap set in the Tx gap, the MAC entity processes the set UL grant but does not perform the UL-SCH transmission and transmits the neighbor PLMN or carrier / cell-to-cell discovery signal in the corresponding Tx gap And does not perform monitoring for any DL channel in the DL carrier for LTE DL reception.

Case 2

In this case 2, when one UL grant is set for the current TTI in the SpCell but there is no UL-SCH transmission (i.e., no UL-SCH data to be transmitted exists), the current TTI 1 in the example of Figure 1) overlap with the SL gap.

If the SL gap overlapping the SPS SF (for example, SPS SF # 1) is Rx gap, the MAC entity can process the UL grant set for this TTI. However, UL-SCH transmission is not performed because there is no uplink data to be transmitted. Additionally, it does not monitor the neighbor PLMN or carrier / cell-to-cell discovery signal in the corresponding Rx gap, whereas the DL carrier for LTE DL reception may or may not monitor for any DL channel.

Alternatively, if the SL gap overlapping the SPS SF (for example, SPS SF # 1) is an Rx gap, the MAC entity may not process the UL grant set for this TTI. Accordingly, UL-SCH transmission is not performed. Additionally, it may not monitor neighbor PLMN or carrier / cell-to-cell discovery signals in the Rx gap, while DL carriers for LTE DL reception may or may not monitor for any DL channels.

On the other hand, if the SL gap overlapping the SPS SF (for example, SPS SF # 1) is a Tx gap, the MAC entity may not process the UL grant set for this TTI. Accordingly, UL-SCH transmission is not performed. Therefore, if the SL gap is Tx gap, the MAC entity performs only the neighbor PLMN or carrier / cell-to-cell discovery signal transmission without performing any operation for the UL grant for this TTI. Additionally, while transmitting the neighbor PLMN or carrier / inter-cell discovery signal in the corresponding Tx gap, the DL carrier for LTE DL reception does not perform monitoring for any DL channel.

Case 3

In this case 3, in the case where one UL grant is set for the present TTI and a UL-SCH transmission is instructed for this TTI in SpCell, the current TTI (for example, SPS SF # 2 in the example of FIG. 1) Is overlapped with the SL gap.

If the SL gap overlapping with the SPS SF (for example, SPS SF # 2) is an Rx gap, the MAC entity can process the corresponding set UL grant for this TTI and perform UL-SCH transmission at the same time, Does not monitor the neighbor PLMN or carrier / cell-to-cell discovery signal in the Rx gap, and does not perform monitoring for any DL channel in the DL carrier for LTE DL reception.

On the other hand, when the SL gap overlapping with the SPS SF (for example, SPS SF # 2) is a Tx gap, the MAC entity processes the set UL grant but does not perform UL-SCH transmission, PLMN or carrier / cell-to-cell discovery signal, and does not perform monitoring on any DL channel in the DL carrier for LTE DL reception.

Alternatively, when the SL gap overlapping with the SPS SF (for example, SPS SF # 2) is a Tx gap, the MAC entity does not process the set UL grant and does not perform UL-SCH transmission accordingly, and transmits the neighbor PLMN or carrier / cell-to-cell discovery signal in the gap, and does not perform monitoring for any DL channel in the DL carrier for LTE DL reception.

2 is a view for explaining UL HARQ process operation during SL gap according to an example of the present invention.

Unlike the measurement gap setting, the SL gap setting may be overlapped with the subframes corresponding to one HARQ process several times. This means that the measurement gap has an MGRP (Measurement Gap Repetition Period) of 40 ms or 80 ms with a period of 5 ms, but the SL gap (Tx gap or Rx gap) , There is a possibility that the SL gap is duplicated in one HARQ process several times. This problem may be more severe in the case of TDD where the available subframes for UL transmission are limited. Therefore, when overlapping SL gaps with the HARQ processes associated with the UL SPS, it is required to define a more clear terminal operation.

Case 4

This Case 4 is for the cases where the SL gap # 0 and SL gap # 1 in FIG. 2 are both Rx gap (or no SL gap).

In this case, if UL grant is set in SL gap # 0 for UL SPS transmission and PUSCH (or UL-SCH) transmission is instructed in SL gap # 0, the UL grant is processed and, PUSCH (or UL-SCH) transmission.

2, the Physical HARQ Indicator Channel (PHICH) indicates transmission of HARQ ACK / NACK information for a previous SPS (PUSCH) transmission, and the UE transmits a subsequent SPS (PUSCH) based on the received HARQ- UL data transmission / retransmission can be performed.

Case 5

In this case 5, SL gap # 0 is the Rx gap (or no SL gap), and SL gap # 1 is the Tx gap.

In this case, if UL grant is set in SL gap # 0 for UL SPS transmission and PUSCH (or UL-SCH) transmission is instructed in SL gap # 0, the UL grant is processed and, PUSCH (or UL-SCH) transmission.

Here, when the HARQ-ACK feedback for the previous PUSCH transmission provided to the UE through the PHICH indicates NACK, if the associated PUSCH retransmission overlaps with the Tx gap with SL gap # 1, the corresponding PUSCH retransmission is not performed (Or delayed). In this case, the PUSCH retransmission not performed in response to the PHICH (NACK) can be performed again at the next PUSCH HARQ timing corresponding to the same HARQ process.

If the indicated PUSCH transmission / retransmission can not be performed by the Tx gap, the value of CURRENT_TX_NB (i.e., the number of times data transmission in the current buffer has occurred) can be incremented by one. If the increased CURRENT_TX_NB value becomes equal to the maximum number of transmissions - 1, the HARQ buffer corresponding to the associated HARQ process can be flushed.

Case 6

In this case 6, the SL gap # 0 is the Tx gap and the SL gap # 1 is the Rx gap (or no SL gap).

In this case, if UL grant is set in SL gap # 0 for UL SPS transmission and PUSCH (or UL-SCH) transmission is instructed in SL gap # 0, the corresponding UL grant is handled. PUSCH (or UL-SCH) transmission may not be performed.

Here, if the subframe corresponding to the next PUSCH HARQ timing for the PUSCH retransmission overlaps with the SL gap # 1 or no SL gap, the indicated PUSCH retransmission can be performed.

Case 7

Case 7 is for the case where SL gap # 0 and SL gap # 1 are both Tx gaps.

In this case, when UL grant is set in SL gap # 0 for UL SPS transmission and PUSCH (or UL-SCH) transmission is instructed in SL gap # 0, the UL grant is handled, PUSCH (or UL-SCH) transmission may not be performed.

Here, if the subframe corresponding to the next PUSCH HARQ timing corresponding to the same HARQ process is continuously overlapped with the SL gap # 1 (i.e., Tx gap) for PUSCH retransmission, the indicated PUSCH transmission may not be performed.

If the indicated PUSCH transmission / retransmission can not be performed by the Tx gap, the value of CURRENT_TX_NB (i.e., the number of times data transmission in the current buffer has occurred) can be incremented by one. If the increased CURRENT_TX_NB value becomes equal to the maximum number of transmissions - 1, the HARQ buffer corresponding to the associated HARQ process can be flushed.

3 is a diagram for explaining an operation according to an example of the present invention.

In step S310, the terminal can receive the UL SPS setting information and the SL gap setting information from the base station.

In step S320, the UE can determine whether the SL gap is set in the UL SPS subframe indicated by the UL SPS setting information. If the UL SPS sub-frame overlaps with the SL gap, the process may proceed to step S330.

In step S330, the UE can determine whether to process the UL grant, or perform UL SPS transmission based on at least one of the type of the corresponding UL SPS subframe or the type of the SL gap. Here, the type of the UL SPS subframe is a subframe immediately after the UL grant initialization or re-initialization (for example, SPS SF # 0 in FIG. 1) for the corresponding subframe (or TTI) (For example, SPS SF # 1 in FIG. 1) or indicated subframe (for example, SPS SF # 2 in FIG. 1) in which UL-SCH transmission is not instructed, (E.g., the first SPS (PUSCH) in FIG. 2 or the SPS (PUSCH) after the PHICH) associated with retransmission. The type of SL gap may include Rx gap, Tx gap. Specific examples can be operated according to the above-described cases 1 to 7. [ For example, if the UL grant is not processed in step S330, the UL SPS transmission is not performed in the corresponding UL SPS subframe, but the UL SPS transmission may not be performed even if the UL grant is processed. If it is determined in step S330 to process the UL grant and perform the UL SPS transmission, the UL SPS transmission may be performed in step S340 based on the UL grant information.

If the SL gap is not set in the UL SPS subframe in step S320, the UL SPS transmission in the corresponding UL SPS subframe may be performed in step S340.

Although the above-described exemplary methods are represented by a series of acts for clarity of explanation, they are not intended to limit the order in which the steps are performed, and if necessary, each step may be performed simultaneously or in a different order. In addition, not all illustrated steps are necessary to implement the method according to the present invention.

The foregoing embodiments include examples of various aspects of the present invention. While it is not possible to describe every possible combination for expressing various aspects, one of ordinary skill in the art will recognize that other combinations are possible. Accordingly, it is intended that the invention include all alternatives, modifications and variations that fall within the scope of the following claims.

The scope of the invention includes an apparatus (e.g., a wireless device and its components described with reference to FIG. 4) that processes or implements an operation in accordance with various embodiments of the present invention.

4 is a diagram for explaining a configuration of a wireless device according to the present invention.

FIG. 3 illustrates a terminal apparatus 100 corresponding to an example of a downlink receiving apparatus or an uplink transmitting apparatus, and a base station apparatus 200 corresponding to an example of a downlink transmitting apparatus or an uplink receiving apparatus.

The terminal device 100 may include a processor 110, an antenna unit 120, a transceiver 130, and a memory 140. [

The processor 110 performs baseband-related signal processing, and may include a first module 111 and a second module 112. The first module 111 may correspond to a higher layer processing unit and may process an operation of a MAC (Medium Access Control) layer, an RRC (Radio Resource Control) layer, or higher layers. The second module 112 may correspond to the physical layer processing unit 112 and may process the operation of the physical (PHY) layer (e.g., uplink transmission signal processing, downlink reception signal processing). However, the present invention is not limited thereto, and the first and second modules may be integrated as one module, or may be divided into three or more modules. The processor 110 may control the overall operation of the terminal device 100, in addition to performing baseband-related signal processing.

The antenna unit 120 may include one or more physical antennas, and may support MIMO transmission / reception when the antenna unit 120 includes a plurality of antennas. The transceiver 130 may include a radio frequency (RF) transmitter and an RF receiver. The memory 140 may store information processed by the processor 110, software related to the operation of the terminal device 100, an operating system, applications, and the like, and may include components such as buffers.

The base station apparatus 200 may include a processor 210, an antenna unit 220, a transceiver 230, and a memory 240.

The processor 210 performs baseband-related signal processing, and may include a first module 211 and a second module 212. The first module 211 may correspond to an upper layer processing unit and may process an operation of a MAC (Medium Access Control) layer, an RRC (Radio Resource Control) layer, or higher layers. The second module 212 may correspond to the physical layer processing unit and may process the operation of the physical (PHY) layer (e.g., uplink received signal processing, downlink transmission signal processing). However, the present invention is not limited thereto, and the first and second modules may be integrated as one module, or may be divided into three or more modules. In addition to performing baseband related signal processing, the processor 210 may also control operation of the entire base station apparatus 200. [

The antenna unit 220 may include one or more physical antennas, and may support MIMO transmission / reception when the antenna unit 220 includes a plurality of antennas. The transceiver 230 may include an RF transmitter and an RF receiver. The memory 240 may store information processed by the processor 210, software related to the operation of the base station 200, an operating system, applications, and the like, and may include components such as buffers.

The first module 111 of the processor 110 of the terminal 100 may perform RRC signaling related operations of the terminal of the present invention, for example. For example, the first module 111 can receive the necessary information from the base station including the UL SPS setting information, the SL gap setting information, and the like, to the lower layer. The second module 112 may, for example, perform MAC entity-related operations of the terminal of the present invention. For example, the second module 112 may perform an operation of processing an UL grant received from the base station. For example, it may be determined whether the SL gap is set in the UL SPS subframe indicated by the UL SPS configuration information. If the UL SPS subframe overlaps with the SL gap, one or more of whether to process the UL grant or whether to perform the UL SPS transmission is determined based on at least one of the type of the UL SPS subframe or the type of the SL gap . If it is determined that UL SPS transmission is to be performed, information necessary for UL-SCH transmission can be transmitted to a lower layer (e.g., PHY layer).

The first module 211 of the processor 210 of the base station 200 may perform RRC signaling related operations of the base station of the present invention, for example. For example, the first module 211 may generate UL SPS configuration information, SL gap configuration information, and the like and transmit the generated information to the terminal. The second module 212 may, for example, perform MAC entity-related operations of the base station of the present invention. For example, the second module 212 may generate DCI information including an UL grant to be transmitted to the UE and transmit the DCI information to a lower layer (e.g., a PHY layer) to be transmitted through the PDCCH / EPDCCH.

The operation of the processor 110 of the terminal 100 or the processor 210 of the base station 200 described above may be implemented by software processing or hardware processing or may be implemented by software and hardware processing.

The scope of the present invention includes software (or an operating system, application, firmware, program, etc.) that enables an operation according to various embodiments of the present invention to be performed on a device or computer, It includes a possible medium.

While various embodiments of the present invention have been described with reference to 3GPP LTE or LTE-A systems, they may be applied to various mobile communication systems.

Claims (1)

A method for performing UL (Semi-Persistent Scheduling) transmission in a wireless communication system,
Receiving UL SPS setup information and side link (SL) gap setup information from a base station; And
Wherein, when an SL gap is set in a UL SPS subframe indicated by the UL SPS setting information, the SL gap is received from the base station based on at least one of the type of the UL SPS subframe or the type of the SL gap Determining whether to process the UL grant or whether to perform UL SPS transmission based on the UL grant.

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