阅读说明：本技术 用户设备、基站及其方法 (User equipment, base station and method thereof ) 是由 肖芳英 刘仁茂 于 2020-04-07 设计创作，主要内容包括：根据本发明,提出了一种由用户设备UE执行的方法,包括：接收配置许可；识别针对接收到的所述配置许可的混合自动重传请求HARQ进程；以及在所述配置许可被配置了自动重传的情况下,如果识别的所述HARQ进程的前一个配置许可满足给定条件,则指示识别的所述HARQ进程来传输针对所述前一个配置许可而获取但并未传输的MAC PDU即媒体访问控制协议数据单元。(According to the invention, a method performed by a user equipment, UE, is proposed, comprising: receiving a configuration permission; identifying a hybrid automatic repeat request, HARQ, process for the received configuration grant; and in the case that the configuration grant is configured with automatic retransmission, if a previous configuration grant of the identified HARQ process satisfies a given condition, instructing the identified HARQ process to transmit a MAC PDU (medium access control protocol data unit) which is acquired for the previous configuration grant but is not transmitted.)

1. A method performed by a User Equipment (UE), comprising:

receiving a configuration permission;

identifying a hybrid automatic repeat request, HARQ, process for the received configuration grant; and

in case the configuration grant is configured for automatic retransmission, if a previous configuration grant of the identified HARQ process satisfies a given condition, the identified HARQ process is instructed to transmit a MAC PDU, i.e. a Medium Access control protocol data Unit, which was acquired for the previous configuration grant but not transmitted.

2. The method of claim 1, wherein,

the given condition includes at least one of the following conditions:

condition a: if the previous configuration grant for the HARQ process is of low priority;

condition B: if the previous, second configured grant of the HARQ process is high priority, but the second configured grant overlaps with a dynamic grant having a priority index the same as or greater than the second configured grant, and a MAC PDU is acquired for the dynamic grant or is being transmitted for the dynamic grant;

condition C: if a previous, second configured grant for the HARQ process is high priority, but the second configured grant overlaps with a third configured grant and either a MAC PDU has been acquired for the third configured grant or a MAC PDU acquirable for the third configured grant is being transmitted;

condition D: if the previous, second configured grant of the HARQ process is high priority, but the second configured grant overlaps with the dynamic grant having the same priority index and has acquired or is transmitting a MAC PDU for the dynamic grant;

condition E: if the previous configuration permission of the HARQ process, namely the second configuration permission, is high-priority, but the second configuration permission is overlapped with the dynamic permission scheduled by the Physical Downlink Control Channel (PDCCH) carrying the aperiodic Channel State Information (CSI), and the priority index of the dynamic permission is greater than or equal to that of the second configuration permission.

3. The method of claim 2, wherein,

when a MAC PDU is acquired aiming at a dynamic permission scheduled by a PDCCH carrying aperiodic CSI and the MAC PDU only contains filling bits, transmitting information indicating that the MAC PDU only contains the filling bits to a physical layer, and setting a priority index of an uplink shared channel (UL-SCH) corresponding to the MAC PDU as a low priority.

4. A method performed by a User Equipment (UE), comprising:

judging whether a Media Access Control (MAC) entity configures effective Physical Uplink Control Channel (PUCCH) resources for a waiting Scheduling Request (SR); and

if a valid PUCCH resource is configured for the waiting SR, a physical layer is instructed to transmit the SR on the valid PUCCH resource if the MAC entity is configured with a logical channel-based MAC priority and the SR satisfies a given condition.

5. The method of claim 4, wherein,

and if the valid PUCCH resources are not configured for the waiting SR, canceling the waiting SR.

6. The method of claim 4, wherein,

the given condition includes at least one of the following conditions:

condition 2A: the PUCCH resource of the SR transmission occasion is not overlapped with the dynamically granted uplink shared channel (UL-SCH) resource containing the aperiodic CSI request, and the priority index of the dynamic grant is larger than that of the PUCCH resource;

condition 2B: the PUCCH resource of the transmission opportunity of the SR overlaps with the UL-SCH with a priority index equal to or less than the PUCCH priority index, and the priority of the logical channel triggering the SR is higher than that of the uplink grant of any UL-SCH resource;

condition 2C: the PUCCH resource of the SR transmission occasion overlaps with the dynamic grant containing the aperiodic CSI request, and the MAC priority of the SR is higher than the MAC priority of the dynamic grant, and a MAC PDU, i.e., a MAC protocol data unit, has not been acquired for the dynamic grant or a MAC PDU acquired for the dynamic grant has not been transmitted;

condition 2D: the PUCCH resource of the transmission occasion of the SR overlaps with the dynamic permission containing the aperiodic CSI request, the MAC priority of the SR is higher than the MAC priority of the dynamic permission, the MAC PDU is acquired for the dynamic permission or is transmitted for the dynamic permission, but the priority index of the SR is larger than the priority index of the dynamic permission;

condition 2E: the PUCCH resource of the transmission occasion of the SR overlaps with the configuration permission, the MAC priority of the SR is higher than the MAC priority of the configuration permission, and the MAC PDU is not acquired for the configuration permission or the MAC PDU acquired for the configuration permission is not transmitted;

condition 2F: the PUCCH resource of the transmission occasion of the SR overlaps with the configuration permission, the priority index of the SR is higher than the priority index of the configuration permission, and the MAC PDU is not acquired for the configuration permission or the MAC PDU acquired for the configuration permission is not transmitted;

condition 2G: the PUCCH resource of the transmission opportunity of the SR is overlapped with the configuration permission, the priority index of the SR is higher than the priority index of the configuration permission, and the MAC PDU is acquired for the configuration permission.

7. The method of claim 6, wherein,

if a valid PUCCH resource is configured for a waiting SR, in case that the MAC entity is configured with a logical channel-based MAC priority and the SR satisfies a given condition, the overlapping configuration grant or dynamic grant is considered as a low priority uplink grant.

8. A user equipment, comprising:

a processor; and

a memory having stored therein instructions that, when executed,

wherein the instructions, when executed by the processor, perform the method of any of claims 1 to 7.

9. A method performed by a base station, comprising:

sending a configuration permission to User Equipment (UE); and

upon receiving the configuration permission, the UE performs the method of claim 1.

10. A base station, comprising:

a processor; and

a memory having stored therein instructions that, when executed,

wherein the instructions, when executed by the processor, perform the method of claim 9.

Technical Field

The present disclosure relates to the field of wireless communication technologies, and in particular, to a user equipment, a base station, and a method thereof.

Background

In 3.2019, a work Project supporting the Internet of Things of the NR industry was approved on the third Generation Partnership Project (3rd Generation Partnership Project: 3GPP) RAN #83 (see non-patent document: RP-190728: New WID: Support of NR Industrial Internet of Things (IoT)). In an industrial application scenario, User Equipments (UEs) need to process data flows (traffic flows) from different applications or devices at the same time, and therefore need to consider priority handling and/or multiplexing when collisions between uplink/downlink data channels and control channels occur within user equipments (intra-UEs) and/or between user equipments, and handling of resource collisions between dynamic grants (grant) DG and configuration grants CG and between two or more configuration grants (i.e. collisions between data channels and data channels or collisions between uplink shared channels UL-SCH). Accordingly, one of the goals of the work item is to enhance in resolving resource conflicts between dynamic permissions and configuration permissions, as well as between two or more configuration permissions.

The second working group of 3GPP (RAN2) defines a mechanism for handling Uplink grant priority in the medium Access control mac (medium Access control), i.e. a physical Uplink Shared channel pusch (physical Uplink Shared channel) priority handling mechanism based on Logical Channel (LCH) priority and Logical Channel Priority (LCP) constraints.

In addition, in order to distinguish different requirements of the ultra-reliable low-delay URLLC service and the enhanced mobile broadband eMBB service on delay, reliability and the like, a 2-level priority structure is defined in the 3GPP RAN1 working group.

Since the medium access control MAC and physical layers are based on different priority mechanisms, which will cause the MAC and physical layers to be inconsistent in determining the priority of data or uplink grants, the present disclosure addresses this issue.

Disclosure of Invention

In order to solve at least part of the above problems, the present invention provides a user equipment, a base station and a method thereof, which can solve the problem of the inconsistency of priority due to the fact that a medium access control entity decides the priority of uplink grant based on the priority of a logical channel and a physical layer determines whether a PUSCH and a PUCCH are transmitted based on a priority index, thereby improving the communication efficiency and reliability of a wireless communication system.

In order to achieve the above object, according to the present invention, there is provided a method performed by a user equipment UE, comprising: receiving a configuration permission; identifying a hybrid automatic repeat request, HARQ, process for the received configuration grant; and in the case that the configuration grant is configured with automatic retransmission, if a previous configuration grant of the identified HARQ process satisfies a given condition, instructing the identified HARQ process to transmit a MAC PDU (medium access control protocol data unit) which is acquired for the previous configuration grant but is not transmitted.

Preferably, the given condition includes at least one of the following conditions:

condition a: if the previous configuration grant for the HARQ process is of low priority;

condition B: if the previous, second configured grant of the HARQ process is high priority, but the second configured grant overlaps with a dynamic grant having a priority index the same as or greater than the second configured grant, and a MAC PDU is acquired for the dynamic grant or is being transmitted for the dynamic grant;

condition C: if a previous, second configured grant for the HARQ process is high priority, but the second configured grant overlaps with a third configured grant and either a MAC PDU has been acquired for the third configured grant or a MAC PDU acquirable for the third configured grant is being transmitted;

condition D: if the previous, second configured grant of the HARQ process is high priority, but the second configured grant overlaps with the dynamic grant having the same priority index and has acquired or is transmitting a MAC PDU for the dynamic grant;

condition E: if the previous configuration permission of the HARQ process, namely the second configuration permission, is high-priority, but the second configuration permission is overlapped with the dynamic permission scheduled by the Physical Downlink Control Channel (PDCCH) carrying the aperiodic Channel State Information (CSI), and the priority index of the dynamic permission is greater than or equal to that of the second configuration permission.

Preferably, when a MAC PDU including only padding bits is acquired for a dynamic grant scheduled by a PDCCH carrying aperiodic CSI, information indicating that the MAC PDU includes only padding bits is transmitted to a physical layer, and a priority index of an uplink shared channel UL-SCH corresponding to the MAC PDU is set to a low priority.

Further, according to the present invention, there is provided a method performed by a user equipment, UE, comprising: judging whether a Media Access Control (MAC) entity configures effective Physical Uplink Control Channel (PUCCH) resources for a waiting Scheduling Request (SR); and if a valid PUCCH resource is configured for the waiting SR, instructing a physical layer to transmit the SR on the valid PUCCH resource in case that the MAC entity is configured with a logical channel based MAC priority and the SR satisfies a given condition.

Preferably, if a valid PUCCH resource is not configured for the waiting SR, the waiting SR is cancelled.

Preferably, the given condition includes at least one of the following conditions:

condition 2A: the PUCCH resource of the SR transmission occasion is not overlapped with the dynamically granted uplink shared channel (UL-SCH) resource containing the aperiodic CSI request, and the priority index of the dynamic grant is larger than that of the PUCCH resource;

condition 2B: the PUCCH resource of the transmission opportunity of the SR overlaps with the UL-SCH with a priority index equal to or less than the PUCCH priority index, and the priority of the logical channel triggering the SR is higher than that of the uplink grant of any UL-SCH resource;

condition 2C: the PUCCH resource of the SR transmission occasion overlaps with the dynamic grant containing the aperiodic CSI request, and the MAC priority of the SR is higher than the MAC priority of the dynamic grant, and a MAC PDU, i.e., a MAC protocol data unit, has not been acquired for the dynamic grant or a MAC PDU acquired for the dynamic grant has not been transmitted;

condition 2D: the PUCCH resource of the transmission occasion of the SR overlaps with the dynamic permission containing the aperiodic CSI request, the MAC priority of the SR is higher than the MAC priority of the dynamic permission, the MAC PDU is acquired for the dynamic permission or is transmitted for the dynamic permission, but the priority index of the SR is larger than the priority index of the dynamic permission;

condition 2E: the PUCCH resource of the transmission occasion of the SR overlaps with the configuration permission, the MAC priority of the SR is higher than the MAC priority of the configuration permission, and the MAC PDU is not acquired for the configuration permission or the MAC PDU acquired for the configuration permission is not transmitted;

condition 2F: the PUCCH resource of the transmission occasion of the SR overlaps with the configuration permission, the priority index of the SR is higher than the priority index of the configuration permission, and the MAC PDU is not acquired for the configuration permission or the MAC PDU acquired for the configuration permission is not transmitted;

condition 2G: the PUCCH resource of the transmission opportunity of the SR is overlapped with the configuration permission, the priority index of the SR is higher than the priority index of the configuration permission, and the MAC PDU is acquired for the configuration permission.

Preferably, if a valid PUCCH resource is configured for the waiting SR, in the case that the MAC entity is configured with a logical channel-based MAC priority and the SR satisfies a given condition, the overlapping configuration grant or dynamic grant is considered to be a low priority uplink grant.

Furthermore, according to the present invention, there is provided a user equipment comprising: a processor; and a memory storing instructions, wherein the instructions, when executed by the processor, perform the method described above.

Further, according to the present invention, there is provided a method performed by a base station, comprising: sending a configuration permission to User Equipment (UE); and when receiving the configuration permission, the UE performs the method.

Furthermore, according to the present invention, there is provided a base station comprising: a processor; and a memory storing instructions, wherein the instructions, when executed by the processor, perform the method described above.

Effects of the invention

According to the present invention, it is possible to solve the problem of the inconsistency of priorities, which is caused by the determination of the uplink grant priority by the medium access control entity based on the logical channel priority and the determination of whether or not the PUSCH and the PUCCH are transmitted by the physical layer based on the priority index, and thus it is possible to improve the communication efficiency and reliability of the wireless communication system.

Drawings

The above and other features of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:

fig. 1 is a flowchart illustrating a method performed by a user equipment according to a first embodiment of the present invention.

Fig. 2 is a flow chart illustrating a method performed by a user equipment according to a second embodiment of the present invention.

Fig. 3 is a flow chart illustrating a method performed by a user equipment according to a third embodiment of the present invention.

Fig. 4 is a block diagram schematically illustrating a user equipment to which the present invention relates.

Fig. 5 is a block diagram schematically illustrating a base station according to the present invention.

Detailed Description

The present disclosure is described in detail below with reference to the attached drawings and detailed description. It should be noted that the present disclosure should not be limited to the specific embodiments described below. In addition, for the sake of brevity, detailed descriptions of well-known technologies not directly related to the present disclosure are omitted to prevent confusion of understanding of the present disclosure.

Some of the terms to which the present disclosure relates, if not specifically stated, are the same as those used in the current latest version of the 3GPP protocol, and are now extracted as follows.

RRC: radio Resource Control, Radio Resource Control.

MAC: medium Access Control, Medium Access Control.

PDCCH: physical Downlink Control Channel, Physical Downlink Control Channel.

PUCCH: physical uplink control channel, Physical uplink control channel.

PUSCH: physical uplink shared channel.

UL-SCH: uplink shared channel (UPLINKSharedChannel)

SDU: ServiceData Unit, service data Unit.

PDU: protocol Data Unit, Protocol Data Unit.

SR: scheduling Request, Scheduling Request.

CSI: Channel-State Information, Channel-State Information.

CG: configured uplink Grant, also called configuration Grant.

DG: the Dynamic Grant refers to an uplink Grant received on the PDCCH. In other words, the uplink grant for the C-RNTI or TC-RNTI of the MAC entity received on the PDCCH or the uplink grant for the CS-RNTI and NDI of the MAC entity received on the PDCCH is 1. The uplink grant for the CS-RNTI of the MAC entity may be used to configure retransmission of the MAC PDU transmitted on the uplink grant, in which case the received New Data Indicator (NDI) value is 1 and the NDI is considered not to be flipped. The uplink grant aiming at the C-RNTI, TC-RNTI or CS-RNTI of the MAC entity received on the PDCCH is an uplink grant indicated by the PDCCH scrambled by the C-RNTI, TC-RNTI or CS-RNTI of the MAC entity, and the two expressions can be used interchangeably.

UL Grant: the uplink grant includes a dynamic grant DG and a configuration grant CG.

configuredGrantTimer: this is a timer whose initial value is configured by the base station through RRC signaling for each CG of the UE, which is several times the corresponding CG period. The configuration of this timer can be referred to the information element (abbreviated as cell, the same below) configuredGrantTimer defined in TS38.331, and the start and stop operations of this timer are described in TS 38.321. When this timer is running, the corresponding configuration license is not a valid configuration license on which data transfer cannot occur.

C-RNTI: cellradio network temporaryidentifier, cell radio network temporary identifier.

CS-RNTI: ConfiguredSchedulingRNTI, configuring a permitted radio network temporary identity.

TC _ RNTI: temporary C-RNTI and Temporary C-RNTI.

Unless specifically stated otherwise, the dynamic grant described in the embodiments of the present disclosure refers to an uplink grant for a C-RNTI of a MAC entity received on a PDCCH or an uplink grant for a CS-RNTI of a MAC entity and an NDI of 1 received on a PDCCH.

HARQ information: HARQ information transmitted on the HARQ information, DL-SCH or UL-SCH consists of NDI, Transport Block Size (TBS), Redundancy Version (RV), and HARQ process number (HARQ process ID). Other information may also be included in the HARQ information.

lch-basedPrioritization: if the base station configures the information element or the information element appears for the MAC entity of the UE, it indicates that the UE or the MAC entity is configured with a priority mechanism (If field is present, the UE is configured with priority between overlapping uplink overlapping grants and between overlapping scheduling requests and overlapping grants based on the logical channel priority) based on the priority of the logical channel. In other words, this information element is used to instruct the MAC entity to determine the priority of the uplink grant and/or the scheduling request SR according to the priority of the logical channel, that is, For the MAC entity configured with lch-basedPrioritization, the priority of the uplink grant is determined by the highest priority among the priorities of the logical channels that have data and can be multiplexed or multiplexed according to the logical channel priority procedure LCP defined in TS38.321 (For the MAC entry configured with lch-basedPrioritization, priority of an uplink grant having specified by the local channels with data available MAC PDU, and uplink grant having specified priority or having specified priority of the uplink channels with data available MAC PDU, and uplink grant having specified priority of the uplink grant in the MAC PDU, and uplink grant priority of the uplink grant in the MAC entity configured with data available channel, priority of the MAC entity, MAC, and MAC, and MAC, and/or MAC, and MAC, For the priority, MAC, For the priority, and/or MAC, and MAC, For the priority, and MAC, and/or MAC, For the priority; the priority of the SR is determined by the priority of the logical channel triggering the SR. In other words, the priority of the uplink grant is the highest priority of the logical channel satisfying the condition, and the priority of the SR is the priority of the logical channel triggering the SR. The MAC entity is configured with lch-basedprioritification, that the MAC entity is configured with a priority based on a logical channel (the priority is referred to as MAC priority), and the received RRC message includes this parameter and/or the value of this parameter is set to "enabled".

Configuredggrantconfig: the cell is used for configuring uplink transmission (The IE configurable grant configuration is used to configure uplink transmission with dynamic grant recording to two possible schemes) without dynamic grant according to two possible mechanisms. The actual uplink grant may be provided by RRC configuration (referred to as type 1) or by PDCCH for CS-RNTI (referred to as type2) (The actual uplink grant map information be configured via RRC (type) or provided via The PDCCH (addressed to CS-RNTI) (type 2)).

autonomousReTx: if this information element appears in the cell configuredggrantconfiguration for configuring configuration upstream transmission that does not require dynamic admission, it indicates that the corresponding configuration admission configuration is Configured with automatic retransmission (If this field is present, the Configured Grant configuration is Configured with automatic retransmission). It should be noted that although referred to as retransmission here, in practice, the HARQ entity processes according to the new transmission, and therefore, the automatic retransmission may also be referred to as automatic transmission or automatic new transmission. More specifically, the autonomousReTx is used to indicate whether transmission of a low priority MAC PDU with the same HARQ process configured with an uplink grant (e.g., the same configured uplink grant) is supported, or to indicate that it is the MAC entity that transmits a low priority MAC PDU with the same HARQ process configured with an uplink grant (e.g., the same configured uplink grant).

The information element lch-basedprioritification, autonomousReTx is configured for the user equipment by the base station through RRC signaling or system information message. lch-basedpropriority may be configured by the base station for each MAC entity of the UE, and autonomousReTx may be configured by the base station for each configuration permission of the UE.

For the MAC entity configured with lch-based priority, the priority of the uplink grant is determined by the highest priority among the priorities of the logical channels that have data and are multiplexed or can be multiplexed in the MAC PDU (For the MAC entry configured with lch-based priority, priority of uplink granted priority such as local channels with data available channel multiplex or can be multiplexed in the MAC PDU), and the multiplexing means is determined according to the mapping restriction between the logical channels and the uplink grant (see section TS38.3215.4.3.1.2). The MAC PDU is a MAC PDU constructed/obtained for the uplink grant, and the MAC PDU is to be transmitted on a PUSCH corresponding to the uplink grant. For convenience of describing the embodiments, in the embodiments subsequent to the present disclosure, the priority of the uplink grant based on the logical channel priority is referred to as the MAC priority of the uplink grant. The priority index of the PUCCH or PUSCH refers to the PUCCH or PUSCH physical layer priority, or if the PUCCH is used to transmit the SR, the priority index of the PUCCH is the physical layer priority of the SR, or the priority index of the PUSCH is the physical layer priority of the uplink grant corresponding thereto. In the disclosed embodiment, the priority index is simply the physical layer priority.

The 3GPP first working group RAN1 determines whether to transmit the overlapping PUCCH or PUSCH based on the level of the priority index (priority index) indicated. Specifically, a priority index of 1 indicates a high priority, and a priority index of 0 indicates a low priority. The priority indexes of the PUCCH and the PUSCH are indicated by corresponding Downlink Control Information (Downlink Control Information) DCI (for dynamic grant) or configured by RRC message (for configuration grant). If neither indicated in the DCI nor configured by the RRC message, the corresponding priority index is 0. The priority index of the dynamic grant or configuration grant or UL-SCH is the priority index of the corresponding PUSCH. The priority index of the PUSCH for transmitting the CSI is the priority index of the corresponding CSI; for aperiodic CSI, its priority index may be the priority index indicated in the DCI of the PDCCH carrying the aperiodic CSI request. The priority index of the PUCCH for transmitting the SR is the priority index of the corresponding SR.

The transmission priority rules defined by the physical layer are as follows: when transmission of a first PUCCH with a priority index of 1 and transmission of a PUSCH or a second PUCCH with a priority index of 0 overlap in a time domain, the UE does not transmit the PUSCH or the second PUCCH; when transmission of a first PUSCH with a priority index of 1 and transmission of a PUCCH with a priority index of 0 overlap in a time domain, the UE does not transmit the PUCCH; when transmission of a first PUSCH with a priority index of 1 and transmission of a second PUSCH with a priority index of 0 on the same serving cell overlap in a time domain, the UE does not transmit the second PUSCH; the priority index of the PUSCH and PDCCH scheduled PUSCH configured with the configuration grant having the priority index configured as 1 is set to 0 by the scheduling DCI or a field for setting the priority index does not appear in the scheduling DCI, and the UE transmits the PUSCH configured with the grant and cancels the PUSCH transmission scheduled by the PDCCH (canceling is started at least from the first symbol of the PUSCH configured with the grant).

In the present disclosure, the collision or overlap (overlap) of the PUSCH duration (duration) of the uplink grant (i.e., the dynamic grant DG or the configuration uplink grant or the UL-SCH) on a certain HARQ process with the scheduling request SR (i.e., the PUCCH duration of the SR or the SR), is referred to as the collision (or overlap) of the uplink grant with the SR (in other words, the UL-SCH or the PUSCH and the SR cannot both be transmitted or cannot be transmitted at the same time). On one serving cell, the PUSCH duration of a dynamic grant DG on one HARQ process overlaps with the PUSCH duration of a configured grant CG on another HARQ process, referred to as a DG/CG collision (or overlap). The PUSCH duration overlap of a configured grant CG on one HARQ process with the PUSCH duration of a configured grant CG on another HARQ process on one serving cell is referred to as a CG/CG collision (or overlap). The DG/CG conflict comprises the situation that one DG conflicts with the PUSCH duration among the CGs on a plurality of different HARQ processes; similarly, a CG/CG conflict also includes the case of a PUSCH duration conflict among multiple CGs; and the case where the collision of the uplink grant with the SR also includes the collision of a plurality of uplink grants with the SR. In the present disclosure, the PUSCH overlap (or collision) or the PUSCH and SR overlap (or collision) of different uplink grants may be that different uplink grants overlap in the time domain, in other words, they cannot both be transmitted or cannot be transmitted simultaneously. The PUSCH duration overlap or PUCCH and PUSCH overlap refers to an intersection of the two in the time domain, where one may be fully or partially contained in the other in the time domain.

In the present disclosure, a certain configuration grant or dynamic grant or scheduling request is considered to be high priority (prioritized) or low priority (prioritized) is considered to be high MAC priority or low MAC priority, i.e. high priority or low priority at the MAC layer.

The following embodiments are applicable to a case where an uplink grant overlaps with each other or an uplink grant overlaps with an SR. In one embodiment, the uplink grant is low priority if the PUSCH corresponding to the uplink grant cannot be transmitted, for example, because the PUSCH or PUCCH overlapping therewith has a higher priority index or is transmitting and will not be cancelled according to the transmission priority rules defined by the physical layer.

In one embodiment, an uplink grant that overlaps with other uplink grants or PUCCHs may be low priority if the PUSCH cannot be transmitted according to the transmission priority rules defined by the physical layer, e.g., because the other uplink grants or PUCCHs that overlap with them have higher priority indices or are transmitting and the other uplink grants or PUCCHs that overlap with them are not cancelled according to the transmission priority rules defined by the physical layer.

In one embodiment, the scheduling request is low priority if the scheduling request overlapping with the other PUSCH or second PUCCH corresponds to the first PUCCH being unable to transmit according to the transmission priority rule defined by the physical layer, e.g., because the PUSCH or second PUCCH overlapping with the first PUCCH has a higher priority index or the PUSCH or second PUCCH overlapping with the first PUCCH is transmitting and the transmission priority rule defined by the physical layer is not cancelled.

The following describes an embodiment of determining the priority of an uplink grant when a dynamic grant conflicts with a configuration grant

In one embodiment, the duration of the PUSCH for the configuration grant and the duration of the PUSCH for the dynamic grant overlap and the priority index for the configuration grant and the priority index for the dynamic grant are the same, and if the MAC priority of the dynamic grant is lower than the MAC priority of the configuration grant but a MAC PDU has already been acquired for the dynamic grant, optionally, it is also satisfied that the MAC PDU acquired for the dynamic grant is being transmitted, the configuration grant is considered to be of low priority (de-prioritized); a configured grant is considered high priority (prioritized) if the dynamically granted MAC priority is lower than the configured granted MAC priority and a MAC PDU has not been acquired for the dynamic grant, or the dynamically granted MAC priority is lower than the configured granted MAC priority and a MAC PDU acquired for the dynamic grant has not been transmitted. In one embodiment, a configuration grant is considered high priority if the PUSCH duration for the configuration grant and the PUSCH duration for the dynamic grant overlap and the priority index for the configuration grant is greater than the priority index for the dynamic grant, optionally also satisfying that the MAC priority for the dynamic grant is lower than the MAC priority for the configuration grant.

In one embodiment, the PUSCH duration for the configuration grant and the PUSCH duration for the dynamic grant overlap and the MAC priority for the configuration grant is satisfied to be higher than the MAC priority for the dynamic grant if at least one of the following (1) - (4) is satisfied: (1) MAC PDUs have been acquired for the dynamic grant, (2) dynamically granted MAC PDUs are being transmitted, (3) the configuration grant is configured for automatic retransmission (i.e., the configuration grant corresponds to a config cell that includes the cell autonomousReTx), (4) the configuration grant has a priority index that is less than or equal to the priority index of the dynamic grant, and the configuration grant is considered low priority; when the configured grant PUSCH duration and the dynamic grant PUSCH duration overlap and the configured grant MAC priority is higher than the dynamic grant MAC priority and a MAC PDU has not been acquired for the dynamic grant (or a MAC PDU has been acquired for the dynamic grant but has not yet been transmitted), the configured grant is considered high priority.

In one embodiment, a configured grant is considered low priority if the PUSCH duration for the configured grant and the PUSCH duration for the dynamic grant overlap, a MAC PDU has been acquired for the dynamic grant and further satisfies that the priority index of the configured grant is less than or equal to the priority index of the dynamic grant, optionally further satisfies that the configured grant is configured for automatic retransmission, and optionally further satisfies that the MAC PDU acquired for the dynamic grant is being transmitted; when the configuration allowed PUSCH duration and the dynamic allowed PUSCH duration are overlapped, the MAC priority of the configuration allowed is higher than the MAC priority of the dynamic allowed and the MAC PDU is not acquired for the dynamic allowed yet (or the MAC PDU is already acquired for the dynamic allowed but is not transmitted yet), the configuration allowed is considered to be of high priority; when the PUSCH duration of the configuration permission and the PUSCH duration of the dynamic permission are overlapped and the priority index of the configuration permission is larger than the priority index of the dynamic permission, the configuration permission is considered to be high-priority.

In one embodiment, a configured grant is considered low priority if it overlaps with a dynamic grant scheduled by a PDCCH carrying an aperiodic CSI request and the priority index of the dynamic grant is greater than or equal to the priority index of the configured grant, optionally also satisfying that a MAC PDU has been acquired for the dynamic grant, optionally that a MAC PDU available for the dynamic grant is being transmitted, optionally that the MAC priority of the configured grant is higher than the MAC priority of the overlapped dynamic grant.

The following describes an embodiment of determining uplink grant priority when a conflict occurs between configuration grants

In one embodiment, the PUSCH duration of the first configuration grant and the PUSCH duration of the second configuration grant overlap if at least one of the following (1) - (4) is satisfied: (1) MAC PDUs have been acquired for the second configuration grant, (2) the priority index of the first configuration grant is less than or equal to the priority index of the second configuration grant, (3) the first configuration grant is configured for automatic retransmission, (4) MAC PDUs available for the second configuration grant are being transmitted, the first configuration grant is considered low priority; the first configured grant is considered high priority when the PUSCH duration of the first configured grant overlaps with the PUSCH duration of the second configured grant and the MAC priority of the first configured grant is higher than the MAC priority of the second configured grant and no MAC PDU has been acquired for the second configured grant or has been acquired for the second configured grant.

In one embodiment, the PUSCH duration of the first configuration uplink grant and the PUSCH duration of the second configuration grant overlap and a MAC PDU has been acquired for the second configuration grant, then the first configuration grant is considered to be of low priority; the first configuration grant is considered high priority if the MAC priority of the second configuration grant is lower than the first configuration grant and a MAC PDU has not been acquired for the second configuration grant.

In one embodiment, a first configuration grant is considered high priority if the PUSCH duration of the first configuration grant overlaps with the PUSCH duration of a second configuration grant, a MAC PDU has been acquired for the second configuration grant, and further the priority index of the first configuration uplink grant is greater than the priority index of the second configuration grant, optionally the MAC PDU acquired for the second configuration grant has not been transmitted, optionally the MAC priority of the first configuration grant is also greater than the MAC priority of the second configuration grant.

In one embodiment, a first configuration grant is considered high priority if the PUSCH duration for the first configuration grant and the PUSCH duration for the second configuration grant overlap, a MAC PDU has not been acquired for the second configuration grant or a MAC PDU has been acquired for the second configuration grant but has not been transmitted, and further the MAC priority of the first configuration grant is higher than the MAC priority of the second configuration grant.

The following describes the process of uplink scheduling priority handling when uplink scheduling reception conflicts.

When the MAC entity is configured with lch-basedPrioritization (which may be referred to as that the MAC entity is configured with priority based on a logical channel), for an uplink grant that is not a low priority, if the uplink grant is configured with an uplink grant, the uplink grant satisfies conditions a to C, and the uplink grant further satisfies at least one of conditions D to G, the configured uplink grant is considered to be a high priority uplink grant (prioritized uplink grant), and other overlapping uplink grants are low priority uplink grants (de-prioritized uplink grant); otherwise, the configured uplink grant may be considered a low priority uplink grant.

A) On the same BWP, there is no other configuration grant (if heat is no overlapping PUSCH duration of appended uplink grant, in the same BWP, which has higher priority) with another PUSCH duration overlapping with the configuration grant;

B) on the same BWP, there is no uplink grant for CS-RNTI with C-RNTI (if heat is no overlapping PUSCH duration with CS-RNTI and NDI 1) with higher priority or same priority as the configuration grant (in the same sampbwp, while the priority is high from the channel to the priority of the uplink grant);

C) there is no PUCCH resource for SR transmission overlapping with the configuration grant, and the priority of the logical channel triggering the SR is higher than the priority of the configuration grant (approach is no overlapping PUCCH resource with an SR transmission where the priority of the local channel is three-ended the SR is high the priority of the uplink grant);

D) on the same BWP, there is no uplink grant (if uplink grant is addressed to C-RNTI or CS-RNTI with NDI ═ 1) with PUSCH duration overlapping with PUSCH duration of the configuration grant and priority index being the same as priority index of the configuration grant but MAC priority being lower than CS-RNTI of the configuration grant for C-RNTI or NDI ═ 1 and HARQ entity has acquired MAC PDU for the uplink grant or the acquired MAC PDU is transmitting; optionally, automatic retransmission is configured according to the configuration permission;

E) on the same BWP, there is no other configuration grant, the PUSCH duration of the other configuration grant overlaps with the PUSCH duration of the configuration grant and a MAC PDU has been acquired for the other configuration grant or is being transmitted; optionally, it is also satisfied that the priority index of the configuration permission is less than or equal to the priority index of another configuration permission; optionally, automatic retransmission is configured according to the configuration permission;

F) on the same BWP, no other uplink permission which aims at C-RNTI and contains an aperiodic CSI request exists, the PUSCH duration of the uplink permission is overlapped with the PUSCH duration of the configuration permission, and the priority index of the uplink permission is larger than or equal to the configuration permission; optionally, it is also satisfied that the uplink grant for the C-RNTI and including the aperiodic CSI request has obtained a MAC PDU or is being transmitted by the MAC PDU, and optionally, it is also satisfied that the configuration grant configures automatic retransmission;

G) there is no PUCCH with a priority index greater than that of the configuration grant (the PUCCH resource is used for transmitting one or more of SR, CSI and hybrid automatic repeat request acknowledgement (HARQ-ACK)), and the PUCCH and PUSCH of the configuration grant overlap; optionally, automatic retransmission is configured according to the configuration permission.

The following describes a process of transmitting, by the HARQ entity, the mac pdu acquired for the previously configured uplink grant but not transmitted on the same HARQ process by using the configured uplink grant.

Example one

Fig. 1 is a flowchart illustrating a method performed by a user equipment according to a first embodiment of the present invention.

As shown in fig. 1, in a first embodiment of the present invention, a user equipment UE performs steps including: step 1001, step 1002, step 1003, step 1004, and step 1005 (including step 1005a or step 1005 b).

In the first embodiment, when the HARQ entity or the multiplexing and demultiplexing entity acquires a MAC PDU (or UL-SCH) for a dynamic grant scheduled by a PDCCH carrying aperiodic CSI and the MAC PDU only includes Padding bits (Padding), it indicates that the MAC PDU (or UL-SCH) of the physical layer only includes indication information of the Padding bits. For an UL-SCH that contains only padding bits, the physical layer considers the priority index of the UL-SCH as low priority (or 0).

In the first embodiment, for each configured uplink Grant submitted (sender) by an uplink Grant reception (UL Grant reception) to the HARQ entity, it is considered that the HARQ entity performs the following operations on the configured uplink Grant for an NDI rollover (containment of the NDI bit for the correcting HARQ process to have occurred) of the uplink Grant for a corresponding HARQ process:

in step 1001, the HARQ process of this configuration grant (denoted as the first configuration grant) is identified, and step 1002 is performed on the identified HARQ process.

It should be noted that this configuration permission satisfies the condition: the uplink grant is not for TC-RNTI on the PDCCH and is not inverted from the NDI provided in the HARQ information compared to the transport block TB (TB corresponds to MAC PDU) of the previous transmission of the HARQ process (the appended HARQ information in the associated HARQ information transmitted from the ue to the ue); alternatively, the upstream grant is part of a configured upstream grant family (bundle) and may be used for initial transmission and no MAC PDU has been obtained for this configured grant family (if the upstream grant is part of a bundle of the configured upstream grant, and may be used for initial transmission to a client 6.1.2.3of TS 38.214, and if no MAC PDU has been accessed by the client for this configured grant family).

In step 1002, if the uplink grant is configured with automatic retransmission, and optionally, the uplink grant is also satisfied as a high-priority (referring to MAC priority) uplink grant, step 1003 is executed.

In step 1003, if this uplink grant satisfies at least one of the following conditions a to E, step 1004 is executed.

Condition a: if the previous configuration grant for this HARQ process was of low priority;

condition B: if the previous configuration grant (referred to as the second configuration grant) for this HARQ process is high priority, but the second configuration grant overlaps with a dynamic grant having a priority index that is the same as or greater than the second configuration grant, and either a MAC PDU is acquired for the dynamic grant or the MAC PDU acquired for the dynamic grant is being transmitted;

condition C: if the previous configured grant on this HARQ process (denoted as second configured grant) is high priority but the second configured grant overlaps with the third configured grant and either a MAC PDU has been acquired for the third configured grant or a MAC PDU acquirable for the third configured grant is being transmitted;

condition D: if the previous configuration grant (denoted as second configuration grant) is high priority but the second configuration grant overlaps with the dynamic grant having the same priority index and either a MAC PDU has been acquired for the dynamic grant or a MAC PDU for the dynamic grant is being transmitted; optionally, it is also satisfied that the priority index of the dynamic grant is greater than or equal to the priority index of the second configuration grant;

condition E: if the previous configured grant is high priority, but it overlaps with the dynamic grant scheduled by the PDCCH carrying aperiodic CSI, and the priority index of the dynamic grant is greater than or equal to the priority index of the previous configured grant.

In step 1004, if a transmission of the updated MAC PDU not but transmitted for this HARQ process has already been acquired, then it is considered that a MAC PDU has been acquired and step 1005a is performed.

In step 1005a, submitting the MAC PDU and uplink grant and HARQ information of the TB to the identified HARQ process (transmitter the MAC PDU and uplink grant and HARQ information for the TB 0the identified HARQ process); indicating that the identified HARQ process triggers a new transmission.

Step 1005a may be replaced with step 1005b to form a new embodiment.

In step 1005b, if the uplink grant is not an uplink grant configured with automatic retransmission or if the uplink grant is a high priority uplink grant, the MAC PDU and the uplink grant and the HARQ information of the TB are delivered to the identified HARQ process to indicate the identified HARQ process to trigger a new transmission.

The scheduling request SR transmission procedure is described below.

Example two

Fig. 2 is a flow chart illustrating a method performed by a user equipment according to a second embodiment of the present invention.

As shown in fig. 2, in the second embodiment of the present invention, the steps performed by the user equipment UE include: step 2001, step 2002 and step 2003.

If there is at least one SR waiting (pending), the MAC entity performs the following for each waiting SR:

in step 2001, if the MAC entity does not have a valid PUCCH resource configured for the waiting SR, a random access procedure is initiated and the waiting SR is cancelled; otherwise, step 2002 is performed.

In step 2002, for the SR configuration corresponding to the waiting SR, if the MAC entity has an SR transmission opportunity (the MAC entry has an SR transmission occasion on the valid PUCCH resource for this SR configuration) and an SR prohibit timer SR-prohibit timer (i.e., a timer prohibiting SR from transmitting on the PUCCH) is not running (SR-prohibit timer is not running at the time of the SR transmission occasion) and the PUCCH resource of this SR transmission occasion does not overlap with a measurement gap (the PUCCH resource for the SR transmission occasion not overlap with a measurement gap), then the step 2003 is performed if this MAC entity is configured with lch-basedprimination, and one of the conditions 2A-2G is also satisfied.

Condition 2A: the PUCCH resource of this SR transmission occasion does not overlap with the UL-SCH resource containing the dynamic grant of the aperiodic CSI request, whose priority index is greater than that of the PUCCH resource.

Condition 2B: the PUCCH resource of this SR transmission occasion overlaps with the UL-SCH whose priority index is equal to or less than the PUCCH priority index, and the priority of the logical channel triggering the SR is higher than that of the uplink grant of any UL-SCH resource.

Condition 2C: the PUCCH resource of this SR transmission occasion overlaps with the dynamic grant containing the aperiodic CSI request, and the MAC priority of the SR is higher than the MAC priority of the dynamic grant, and no MAC PDU has been acquired for this dynamic grant or transmitted yet;

condition 2D: the PUCCH resource of this SR transmission occasion overlaps with the dynamic grant containing the aperiodic CSI request, and the MAC priority of the SR is higher than the MAC priority of the dynamic grant, and a MAC PDU has been acquired for this dynamic grant or is being transmitted, but the SR priority index is greater than the priority index of the dynamic grant;

condition 2E: the PUCCH resource of this SR transmission occasion overlaps with the configuration grant, and the MAC priority of the SR is higher than the MAC priority of the configuration grant, and a MAC PDU has not been acquired for this configuration grant or has not been transmitted; optionally, automatic retransmission is configured according to the configuration permission.

Condition 2F: the PUCCH resource of this SR transmission occasion overlaps with the configuration grant, and the priority index of the SR is higher than the priority index of the configuration grant, and a MAC PDU has not been acquired for this configuration grant or transmitted; optionally, automatic retransmission is configured according to the configuration permission.

Condition 2G: the PUCCH resource of this SR transmission occasion overlaps with the configuration grant, and the priority index of the SR is higher than the priority index of the configuration grant, and a MAC PDU has been acquired for this configuration grant; optionally, it is also satisfied that the configuration permission does not configure automatic retransmission.

At step 2003, at least one of the following operations is performed:

operation 2 a: overlapping uplink grants (if any) are considered low priority uplink grants.

Operation 2 b: if the SR COUNTER SR _ COUNTER is less than the maximum number SR-TsansMax of times that the SR can be sent, the value of SR _ COUNTER is increased by 1, and the physical layer is instructed to send the SR (instruction the physical layer to the signal the SR on one valid PUCCH resource for SR) on the effective PUCCH resource of the SR, and the SR prohibit timer SR-ProhibitTimer is started.

The following describes a priority indexing process for configuring logical channels and scheduling requests.

EXAMPLE III

Fig. 3 is a flow chart illustrating a method performed by a user equipment according to a third embodiment of the present invention.

As shown in fig. 3, in a third embodiment of the present invention, the steps performed by the user equipment UE include: step 3001 and step 3002.

In step 3001, The UE receives an RRC message from The base station, where The RRC message includes a cell LogicalChannelConfig for configuring a logical channel parameter and a cell scheduling request resource config (D-SR) for determining a physical layer resource on a PUCCH where The UE sends a specific scheduling request.

Wherein the logical channel configuration includes a cell allowed PHY-priority index and a cell schedulingrequest id, the cell allowed PHY-priority index applies the restriction only when the uplink scheduling is dynamic grant, if the cell allowed PHY-priority index is present and the dynamic grant has a physical layer priority index, the UL MAC SDU from the logical channel can only be mapped to the dynamic grant with a physical layer priority equal to the physical layer priority indicated by the cell (UL MAC SDUs from the physical layer priority index mapped to the physical layer priority index, the dynamic grant has no physical layer priority, if the cell allowed PHY-priority index is present and the dynamic grant has no physical layer priority index, the cell allowed PHY-priority index indicates that the physical layer priority index is from the physical layer priority index, the cell allowed PHY-priority index is mapped to the physical layer priority index, and only if the cell allowed PHY-priority index is present and the dynamic grant has no physical layer priority index is from the physical layer priority index 89physical layer priority index, the cell allowed PHY-priority index is mapped to the physical layer priority index of the physical layer priority index is from the physical layer priority index 89physical layer priority index, the cell allowed PHY-priority index is from the physical layer priority index is dynamically mapped to the physical layer priority index of the cell-priority index 0, UL MAC SDUs from a local channel can be mapped to a dynamic program if the value of the field is p 0). If the cell allowedPHY-priority index does not appear, UL MAC SDUs from this logical channel can be mapped to any dynamic grants (If the field is not present, UL MAC SDUs from the local channel can be mapped to dynamic grants). The scheduling request id cell is used to indicate a scheduling request (scheduling application) for the logical channel. The scheduling request resource includes a cell, ph-priority index, which is used to indicate whether the corresponding scheduling request resource is high or low in physical layer priority or multiplexing (indicating that the corresponding scheduling request resource is high or low).

The physical layer priority of the scheduling request (indicated by the schedulingRequestID cell) configured or applied or associated for a logical channel (indicated by the phy-priority index contained in the configuration cell schedulingRequestResourceConfig for this scheduling request) must be greater than or equal to the physical layer priority indicated by the cell allowedPHY-priority index contained in the logical channel configuration cell LogicalChannelConfig.

In step 3002, the ue configures a logical channel and a scheduling request according to the RRC message.

In TS38.321, if the DCI scheduling the dynamic grant contains an indication to request aperiodic CSI (i.e. to request the UE to send aperiodic CSI), if none of the logical channels that can be multiplexed to the dynamic grant can be sent at this time, the multiplexing and assembling entity will construct a MAC PDU containing Padding bits (Padding) for the dynamic grant. It can be specified that MAC PDUs containing only Padding have the lowest priority (where no MAC control element CE is contained); in other words, the MAC PDU that does not contain data of any logical channel and MAC CE has the lowest priority.

In addition, it should be noted that, corresponding to the above-mentioned embodiments, the present invention proposes a method performed by a base station. According to the method performed by the base station of the present invention, the base station sends a configuration grant to the user equipment UE. Upon receiving the configuration permission, the UE performs the operations described in the first embodiment above.

[ modified examples ]

As a modification, a user equipment capable of executing the method performed by the user equipment described in detail above of the present invention is explained below with reference to fig. 4.

Fig. 4 is a block diagram showing a user equipment UE according to the present invention.

As shown in fig. 4, the user equipment UE40 includes a processor 401 and a memory 402. The processor 401 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like. The memory 402 may include, for example, volatile memory (e.g., random access memory RAM), a Hard Disk Drive (HDD), non-volatile memory (e.g., flash memory), or other memory, among others. The memory 402 has stored thereon program instructions. Which when executed by the processor 401 may perform the above-described method performed by the user equipment as detailed in the present invention.

As a modification, a base station that can execute the method of the present invention described above by the base station will be described below with reference to fig. 5.

Fig. 5 is a block diagram showing a base station according to the present invention.

As shown in fig. 5, the base station 50 includes a processor 501 and a memory 502. The processor 501 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like. The memory 502 may include, for example, volatile memory (e.g., random access memory RAM), a Hard Disk Drive (HDD), non-volatile memory (e.g., flash memory), or other memory, among others. The memory 502 has stored thereon program instructions. Which when executed by the processor 501 may perform the above-described method performed by the base station as detailed in the present invention.

The computer-executable instructions or programs running on the apparatus according to the present invention may be programs that cause a computer to realize functions of the embodiments of the present invention by controlling a Central Processing Unit (CPU). The program or information processed by the program may be temporarily stored in a volatile memory (such as a random access memory RAM), a Hard Disk Drive (HDD), a nonvolatile memory (such as a flash memory), or other memory system.

Computer-executable instructions or programs for implementing the functions of embodiments of the present invention can be recorded on computer-readable storage media. The corresponding functions can be realized by causing a computer system to read the programs recorded on the recording medium and execute the programs. The term "computer system" as used herein may be a computer system embedded in the device and may include an operating system or hardware (e.g., peripheral devices). The "computer-readable storage medium" may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium that stores a program for short-term dynamics, or any other recording medium that is readable by a computer.

Various features or functional blocks of the devices used in the above-described embodiments may be implemented or performed by circuitry (e.g., a single or multiple chip integrated circuits). Circuitry designed to perform the functions described herein may include a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The circuit may be a digital circuit or an analog circuit. Where new integrated circuit technologies have emerged as a replacement for existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present invention may also be implemented using these new integrated circuit technologies.

Further, the present invention is not limited to the above-described embodiments. While various examples of the embodiments have been described, the present invention is not limited thereto. Fixed or non-mobile electronic devices installed indoors or outdoors may be used as terminal devices or communication devices, such as AV devices, kitchen devices, cleaning devices, air conditioners, office devices, vending machines, and other home appliances.

As above, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, the specific configuration is not limited to the above embodiment, and the present invention includes any design modification without departing from the gist of the present invention. In addition, the present invention can be variously modified within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present invention. Further, components having the same effects described in the above embodiments may be substituted for each other.