Method and apparatus for indicating alternative resources when configuring grant collision

Abstract

A communication technology and system for converging a 5th-Generation (5G) communication system with a IoT technology for supporting higher data rates beyond a 4th-Generation (4G) system are provided. The disclosure can be applied to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety related services, etc.) based on 5G communication technology and IoT-related technology. The disclosure provides a method and apparatus for indicating alternative resources in case of configured grant collision.

Description

Technical Field

[0001] This disclosure relates to a method and apparatus for indicating alternative resources when there is a configuration license conflict. Background Technology

[0002] To meet the increased demand for wireless data traffic since the deployment of fourth-generation (4G) communication systems, efforts have been made to develop improved fifth-generation (5G) or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also referred to as "super-4G networks" or "post-LTE systems." The implementation of 5G communication systems in higher frequency (mmWave) bands (e.g., the 60GHz band) is considered to achieve higher data rates. To reduce radio wave propagation loss and increase transmission distance, beamforming, massive MIMO (Multiple-Input Multiple-Output), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive MIMO technologies are discussed in 5G communication systems. Furthermore, in 5G communication systems, development is underway to improve system networks based on advanced small cells, radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, coordinated multi-points (CoMP), and receiver interference cancellation. In 5G systems, hybrid frequency shift keying (FSK), quadrature amplitude modulation (QAM), and sliding window superposition coding (SWSC) have been developed as advanced coding modulation (ACM), while filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA) have been developed as advanced access technologies.

[0003] The Internet, a human-centric network in which humans generate and consume information, is now evolving into the Internet of Things (IoT), in which distributed entities such as things exchange and process information without human intervention. The Internet of Everything (IoE), a combination of IoT technologies connected to cloud servers and big data processing technologies, has emerged. Because IoT implementation requires technological elements such as sensing technology, wired / wireless communication and network infrastructure, service interface technology, and security technology, sensor networks, machine-to-machine (M2M) communication, machine-type communication (MTC), and more have recently been studied. Such an IoT environment can provide intelligent Internet technology services that create new value for human life by collecting and analyzing data generated in connected things. IoT can be applied to various fields through the convergence and combination of existing information technology (IT) and various industrial applications, including smart homes, smart buildings, smart cities, smart cars or connected cars, smart grids, healthcare, smart appliances, and advanced medical services.

[0004] Consistent with this, various attempts have been made to apply 5G communication systems to IoT networks. For example, technologies such as sensor networks, machine-type communication (MTC), and machine-to-machine (M2M) communication can be implemented using beamforming, MIMO, and array antennas. The application of cloud radio access networks (RAN), as a big data processing technology, can also be considered an example of the convergence of 5G and IoT technologies.

[0005] The above information is presented as background information only to aid in understanding this disclosure. No determination or assertion is made as to whether any of the above content can be used as prior art with respect to this disclosure. Summary of the Invention

[0006] Technical issues

[0007] The problem with existing technology is that when there is a conflict between licenses, one of the licenses must be selected and sent.

[0008] Solution to the problem

[0009] The aspects of this disclosure at least address the aforementioned problems and / or disadvantages, and provide at least the following advantages. Therefore, one aspect of this disclosure is to provide a method and apparatus for indicating alternative resources when configuring license conflicts.

[0010] Additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of the presented embodiments.

[0011] According to one aspect of this disclosure, a method for a terminal in a wireless communication system is provided. The method includes: determining whether resources associated with a first grant and resources associated with a second grant conflict; if a conflict is determined to exist, identifying an alternative resource for a lower-priority grant between the first and second grants; determining whether a Media Access Control (MAC) Protocol Data Unit (PDU) corresponding to data associated with the lower-priority grant has been generated; if no MAC PDU has been generated, refreshing a buffer; and transmitting data to a base station via the identified alternative resource.

[0012] According to another aspect of this disclosure, a terminal in a wireless communication system is provided. The terminal includes: a transceiver configured to transmit and receive signals with a base station; and at least one processor configured to determine whether resources associated with a first grant and resources associated with a second grant conflict; if a conflict is determined to exist, identify alternative resources for a lower-priority grant between the first and second grants; determine whether a MAC PDU corresponding to data associated with the lower-priority grant has been generated; if no MAC PDU has been generated, refresh a buffer; and transmit data to the base station via the identified alternative resources.

[0013] According to another aspect of this disclosure, a control signal processing method in a wireless communication system is provided. The control signal processing method includes receiving a first control signal transmitted from a base station, processing the received first control signal, generating a second control signal based on the processing of the received first control signal, and transmitting the second control signal to the base station.

[0014] According to the embodiments disclosed in this disclosure, alternative resources can be configured in the event of a configuration license conflict.

[0015] Other aspects, advantages, and distinctive features of this disclosure will become apparent to those skilled in the art from the following detailed description of various embodiments disclosed in conjunction with the accompanying drawings.

[0016] Beneficial effects of the invention

[0017] In wireless communication systems, efficient communication is possible by using alternative resources. Attached Figure Description

[0018] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 This is a view illustrating operations for configuring configuration authorization according to embodiments of the present disclosure;

[0020] Figure 2 This is a view showing that multiple configuration authorizations are configured according to embodiments of this disclosure;

[0021] Figure 3 This is a view showing the overlapping of multiple configuration authorizations according to embodiments of this disclosure;

[0022] Figure 4 This is a view illustrating operations for configuring configuration authorization according to embodiments of the present disclosure;

[0023] Figure 5 This is a view illustrating a priority configuration method for configuration authorization according to an embodiment of this disclosure;

[0024] Figure 6 This is a view illustrating a processing method when configuration authorization overlaps according to an embodiment of the present disclosure;

[0025] Figure 7 This is a view illustrating the operation of an alternative resource configuration method when configuration authorizations overlap according to embodiments of the present disclosure;

[0026] Figure 8 This is a view illustrating the operation of an alternative resource configuration method when configuration authorizations overlap according to embodiments of the present disclosure;

[0027] Figure 9 This is a view illustrating a method for indicating alternative resources according to an embodiment of this disclosure;

[0028] Figure 10 This is a view illustrating an embodiment of simultaneous transmission configured with a base station according to an embodiment of the present disclosure;

[0029] Figure 11 This is a view illustrating the structure of a terminal according to an embodiment of the present disclosure;

[0030] Figure 12 This is a view illustrating the structure of a base station according to an embodiment of the present disclosure;

[0031] Figure 13 This is a flowchart illustrating an alternative resource transfer method when configuration authorization overlaps according to an embodiment of the present disclosure; and

[0032] Figure 14 This is a flowchart illustrating an alternative resource transfer method when configuration authorization overlaps according to an embodiment of the present disclosure.

[0033] Throughout the accompanying drawings, the same reference numerals will be understood to refer to the same parts, components, and structures. Detailed Implementation

[0034] The following description, provided with reference to the accompanying drawings, is intended to aid in a comprehensive understanding of the various embodiments of this disclosure as defined by the claims and their equivalents. It includes various specific details to aid this understanding, but these details are to be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of this disclosure. Furthermore, for clarity and brevity, descriptions of well-known functions and constructions may be omitted.

[0035] The terms and words used in the following description and claims are not limited to their literal meaning, but are used by the inventors only to enable a clear and consistent understanding of this disclosure. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this disclosure is for illustrative purposes only and not for limiting the disclosure as defined by the appended claims and their equivalents.

[0036] It will be understood that, unless the context explicitly indicates otherwise, the singular forms “a” and “the” include plural indicators. Thus, for example, a reference to “component surface” includes a reference to one or more such surfaces.

[0037] In the following description of this disclosure, descriptions of known functions or configurations incorporated herein will be omitted where such ambiguity may make the subject matter of this disclosure quite unclear. Embodiments of this disclosure will be described below with reference to the accompanying drawings.

[0038] In the following description, for convenience, terms for identifying access nodes, referring to network entities, referring to messages, referring to interfaces between network entities, referring to various types of identification information, etc., are used illustratively. Therefore, this disclosure is not limited to the terms used below, and other terms relating to the subject matter having equivalent technical meaning may be used.

[0039] In the following description, for ease of description, this disclosure uses the terms and names defined in the 3GPP LTE standard. However, this disclosure is not limited to these terms and names and can be applied in the same manner to systems conforming to other standards. In this disclosure, for ease of description, the term "eNB" may be used interchangeably with the term "gNB". For example, a base station described as "eNB" may indicate "gNB".

[0040] Figure 1 This is a view illustrating the operation of configuring configuration authorization according to an embodiment of this disclosure.

[0041] refer to Figure 1Each of configuration grants 110, 120, 130, and 140 is configured to have a certain time period 150. The base station can configure each configuration grant to the terminal and can configure the time period, location, size, modulation, coding rate, etc., of the radio resources. According to embodiments of this disclosure, such configuration grants can be activated immediately upon configuration or can be activated by a separate activation command. It can be assumed that these configuration grants have a fixed service pattern, or that the configuration grants are used for high-priority data. In embodiments of this disclosure, configuration grants can be dedicated to data with short latency requirements. To this end, the base station can configure whether a specific configuration grant can be used for each specific local channel via a Radio Resource Control (RRC) configuration message. According to embodiments of this disclosure, multiple configuration grants can be configured for a terminal, and in this case, the time period, location, size, modulation, coding rate, etc., of each configuration grant of the radio resources can be configured differently.

[0042] Figure 2 This is a view showing that multiple configuration authorizations are configured according to embodiments of this disclosure.

[0043] refer to Figure 2 Two configuration grants are configured: a first configuration grant (CG1) 201, 202, 203, and 204, and a second configuration grant (CG2) 211, 212, 213, and 214. Three or more configuration grants can be configured. In this case, different configuration grants are configured such that the time periods (e.g., time periods 205, 206, and 207 of the first configuration grant and time periods 214 and 215 of the second configuration grant), location, size, modulation, coding rate, etc., of the radio resources are configured individually, and each configuration grant is configured with its own configuration. The location of the radio resources can be configured to be divided into a time axis 210 and a frequency axis 220. In this way, multiple configuration grants can be configured such that each configuration grant can handle data with different requirements, and the base station can configure logical channels that can be transmitted using each configuration grant.

[0044] Figure 3 This is a view showing the overlapping of multiple configuration authorizations according to embodiments of this disclosure.

[0045] refer to Figure 3Two configuration grants, the first configuration grant (CG1) 301, 302, 303 and 304 and the second configuration grant (CG2) 311, 312, 313 and 314, are configured, and three or more configuration grants can be configured. In this case, different configuration grants are configured such that the time period, location, size, modulation, coding rate, etc. of the radio resource configuration grants are configured individually, and each configuration grant is configured for each configuration grant. The location of the radio resources can be configured to be divided into a time axis 310 and a frequency axis 320. In this way, multiple configuration grants can be configured so that each configuration grant can handle data with different requirements, and at this time, the base station can configure the logical channel that can be used to transmit using each configuration grant. In this case, since the time periods 305, 306 and 307 of the first configuration grant are different from the time periods 314 and 315 of the second configuration grant, and the resources allocated on the time axis or the time and frequency axis overlap, the first configuration grant and the second configuration grant can overlap (330). In this case, how the terminal should handle the overlapping part may be a problem.

[0046] At this point, the terminal may need to perform a transmission by selecting one of the configuration grants. This inevitably requires selecting a configuration grant when the terminal has the capability to transmit only one radio resource. As an example of this method, based on predetermined conditions, a transmission corresponding to the first configuration grant 304 may be performed, while a transmission corresponding to the second configuration grant 313 may not be performed. In embodiments of this disclosure, based on predetermined conditions, the resource corresponding to the first configuration grant 340 may be performed only on the resource overlap portion 330, and a transmission corresponding to the second configuration grant may generally be performed on a portion of the second configuration grant 330. Which configuration grant to select can be determined by deriving a relative priority configuration for each configuration grant in advance, or it can be determined based on the type or amount of data the terminal has.

[0047] However, when selecting and sending a configuration license, data that needs to be processed with the unused license may not be sent in a timely manner because one license is not in use, potentially degrading performance. Therefore, how to handle the transmission of data from unused configuration licenses is important.

[0048] Figure 4 This is a view illustrating the operation of configuring configuration authorization according to an embodiment of this disclosure.

[0049] refer to Figure 4Terminal 410 can receive configuration grants from base station 420. Configuration can be performed via RRC configuration messages 430 transmitted from the base station to the terminal. The RRC configuration message may include configuration grant configuration information elements (IEs), and for each configuration grant configuration IE, the time period, location, size, modulation, coding rate, and whether a separate activation message is used for the radio resources can be configured. In this case, when multiple configuration grant configuration IEs are received, the terminal can have multiple configuration grants. Therefore, it is possible to perform... Figure 1 , Figure 2 and Figure 3 The configuration authorization transmission operation is described in [the document]. If the terminal successfully receives the RRC Configuration 420 message and completes the configuration, the terminal can send an RRC Configuration Complete Message 440 to the base station to indicate that the terminal's configuration is complete.

[0050] Figure 5 This is a view illustrating a priority configuration method for configuration authorization according to an embodiment of this disclosure.

[0051] refer to Figure 5 The terminal receives configuration authorization configurations IE 510 and 520 from the base station, which can be configured.

[0052] exist Figure 5 In this embodiment, it is assumed that two configuration licenses configure IE 510 and 520 through two configuration licenses, but this disclosure applies to the case of configuring three or more configuration licenses. Configuration licenses can be assigned their own priorities during configuration. The configuration license corresponding to the first configuration license configuration 510 is assigned priority value 'a', and the configuration license corresponding to the second configuration license configuration 520 is assigned priority value '2'. Generally, a lower priority value can be interpreted as having higher priority, but in the embodiments of this disclosure, a higher priority value can be interpreted as having higher priority. When in Figure 3 When configuration authorization resources overlap as described in section 330, the priority of the configuration authorization can be used. In operation 330, if the priority of the resource overlaps with that of the first and second configuration authorizations, the terminal can determine which configuration authorization to use based on its priority. Specifically, if the priority of the first configuration authorization is higher than that of the second configuration authorization, the first configuration authorization can be used. Figure 5 In this embodiment, since the priority value of the first configuration authorization is low, the priority can be interpreted as high, and the first configuration authorization can be used.

[0053] Figure 6 This is a view illustrating a processing method when configuration authorization overlaps according to an embodiment of the present disclosure.

[0054] refer to Figure 6Assuming a total of two configuration licenses are configured, first configuration licenses 613 and 615 and second configuration licenses 623 and 625, this disclosure applies to the case of configuring three or more configuration licenses. If different configuration licenses overlap on the time axis or frequency axis (630), a terminal with the capability to transmit only one radio resource should select and transmit one resource from the two configuration licenses. For example, since the period 610 of the first configuration license and the period 620 of the second configuration license are different, the resources allocated on the time axis or frequency axis overlap. However, if all resources to be sent to the configuration licenses are important, if only one selected configuration license is selected and transmitted, the data that needs to be sent to configuration licenses that cannot be sent due to not being selected will inevitably degrade transmission performance. Therefore, if the data to be sent to the configuration licenses is important, the degradation in transmission performance can be reduced by providing alternative resources 640 to be sent to resources of configuration licenses that cannot be sent due to not being selected. Figure 6 In this embodiment, this can be referred to as a resource offset. In this case, the physical resource 625 that was actually scheduled to be sent, and can be said to be the physical resource 625 that was actually scheduled to be delivered, is moved to another physical resource 640.

[0055] When a configuration grant overlaps with another configuration grant on the time axis or on both the time and frequency axes, the base station can specify alternative resources to use. This can be configured by configuring RRC to move resources when resources overlap, and rules can be configured for size, modulation, coding rate, and when to move resources (e.g., information on how far away from the overlapping resources on the time and frequency axes when unusable resources overlap). This configuration can be passed in RRC configuration message 430 via configuration grant configurations 510 and 520, etc. In embodiments of this disclosure, these alternative resources can be specified by predetermined rules. The rules for alternative resources can be which resources to use and which resources not to use when configuration grant resources overlap, and where to not use the alternative resources of the configuration grant.

[0056] Figure 7 This is a view illustrating the operation of an alternative resource configuration method when configuration authorizations overlap according to embodiments of the present disclosure.

[0057] refer to Figure 7Assuming a total of two configuration licenses are configured, the first configuration license 710 and the second configuration license 720, this disclosure also applies to the case of configuring three or more configuration licenses. If different configuration licenses overlap on the time axis or the time-frequency axis (730), a terminal capable of transmitting only one radio resource should select and transmit one resource from the two configuration licenses. However, if all resources to be transmitted to the configuration licenses are important, selecting and transmitting only the selected configuration license will inevitably degrade transmission performance by sending data to configuration licenses that cannot be transmitted due to not being selected. Therefore, if the data to be transmitted to the configuration licenses is important, the degradation in transmission performance can be reduced by providing alternative resources 740 to be sent to resources of configuration licenses that cannot be transmitted due to not being selected.

[0058] Therefore, the location of the replacement resource to be moved can be specified based on the unused resources (720). Figure 7 In one embodiment, it is assumed that the first configuration grant 710 has priority, and the disabled second configuration grant 720 uses an alternative resource. In this case, which configuration grant has priority can be determined in advance, and the configuration grant that can be used by the higher-priority logical channel can be prioritized based on the priority of the logical channel that can use each configuration grant. In embodiments of this disclosure, the priority of the logical channel can be applied regardless of whether the logical channel actually has data to send. However, in embodiments of this disclosure, when using an alternative resource, it can be determined which configuration grant is used as is and which configuration grant is moved to the alternative resource for use by the configuration grant index value. For example, configuration grants with small indices are preferred. At this time, an alternative resource 740 has been configured for the resource 720 of the second configuration grant, which is possible by configuring an offset value (time shift) 750 on the time axis and an offset value (frequency shift) 760 on the frequency axis from the position 720 of the previously configured resource. In this case, the unit of the offset value 750 on the time axis can be absolute time, symbol, time slot, subframe, etc. Furthermore, the unit of the offset value of 760 on the frequency axis can be Hertz (Hz), the number of subcarriers, resource blocks, etc. Additionally, the alternative resource can be the same bandwidth portion (BWP) as the existing resource or another bandwidth portion (BWP). To indicate this, the location of the corresponding resource can be notified, including the bandwidth portion identifier (BWPID), cell identifier (ID), and secondary cell (SCell) index, etc.

[0059] Figure 8 This is a view illustrating the operation of an alternative resource configuration method when configuration authorizations overlap according to embodiments of the present disclosure.

[0060] refer to Figure 8Assuming a total of two configuration licenses are configured, the first configuration license 810 and the second configuration license 820, this disclosure also applies to the case of configuring three or more configuration licenses. If different configuration licenses overlap on the time axis or the time-frequency axis (830), a terminal capable of transmitting only one radio resource should select and transmit one resource from the two configuration licenses. However, if all resources to be transmitted to the configuration licenses are important, selecting and transmitting only the selected configuration license will inevitably degrade transmission performance by sending data to configuration licenses that cannot be transmitted due to not being selected. Therefore, if the data to be transmitted to the configuration licenses is important, the degradation in transmission performance can be reduced by providing alternative resources 840 to be sent to resources of configuration licenses that cannot be transmitted due to not being selected.

[0061] Therefore, the location of the replacement resource to be moved can be specified based on the unused resources (810). Figure 8 In one embodiment, it is assumed that the first configuration grant 810 has priority, and the disabled second configuration grant 820 uses an alternative resource. In this case, which configuration grant has priority can be determined in advance, and the configuration grant that can be used by the higher-priority logical channel can be prioritized based on the priority of the logical channel that can use each configuration grant. In embodiments of this disclosure, the priority of the logical channel can be applied regardless of whether the logical channel actually has data to send. However, in embodiments of this disclosure, when using an alternative resource, it can be determined which configuration grant is used as is and which configuration grant is moved to the alternative resource for use by the configuration grant index value, for example, a configuration grant with a small index is preferred. At this time, an alternative resource 840 has been configured for the resource 820 of the second configuration grant, which is possible by configuring an offset value (time shift) 850 on the time axis and an offset value (frequency shift) 860 on the frequency axis from the position 820 of the previously configured resource. In this case, the unit of the offset value 850 on the time axis can be absolute time, symbol, time slot, subframe, etc. Furthermore, the offset value of 860 on the frequency axis can be in Hertz (Hz), the number of subcarriers, resource blocks, etc. Additionally, the alternative resource can be a bandwidth portion (BWP) identical to the existing resource or another BWP. To indicate this, the location of the corresponding resource can be provided, including the BWP ID, cell ID, and SCell index, etc.

[0062] Figure 9 This is a view illustrating a method for indicating alternative resources according to embodiments of the present disclosure. (See reference...) Figure 3 and Figure 6 As stated above, when two or more configuration authorizations overlap on the time axis or the time axis and frequency axis, they can be configured in Figure 6 , Figure 7 and Figure 8 The base station 910 can send a message (930) to the terminal 920 indicating the alternative resource for the resource that is unavailable to the terminal as described in the document. The message may include which resource is provided as an alternative resource, or which of the overlapping configuration authorizations is used. If the configuration authorization for using the alternative resource is required, it may also indicate the location of the alternative resource. The location of the alternative resource may indicate relative to the resource in the document. Figure 7 and Figure 8 The specific configuration authorization distance from the time and frequency axes described in the document can also indicate the absolute position as a system frame number (SFN), slot number, or symbol number within the transmission resource. It may also include the modulation and coding scheme (MCS) of the alternative resource, the logical channel ID available for the alternative resource, and the physical layer priority of the alternative resource. Furthermore, the New Data Indicator (NDI) can be configured as a toggle value indicating that the data is from an alternative resource. The alternative resource indication message can be notified in the form of a DCI using the Physical Downlink Control Channel (PDCCH). The terminal receiving the alternative resource indication message 930 can perform transmission (960) by changing the position of the configuration authorization that cannot be used to change the position of the existing resource 940 to the position 950 of the alternative resource.

[0063] Figure 10 This is a view illustrating an embodiment of simultaneous transmission configured with a base station according to an embodiment of the present disclosure. In some terminals, as shown in reference... Figure 3 and Figure 6 As described above, when two or more configuration grants overlap on the time axis or the time axis and frequency axis, two configuration grants can be transmitted simultaneously. In this case, the terminal can have more usable RF chains than the number of actually configured radio frequency (RF) chains. In this case, the terminal 1010 should notify the base station 1020 that simultaneous transmission of overlapping physical resources in the terminal is possible. This message can be included in the terminal capability message 1030 and sent. Therefore, the base station can identify the scenario in which transmission is possible to the terminal. For example, if the terminal can transmit two physical resources simultaneously, the base station can instruct the terminal to transmit overlapping configuration grants. Such a message can be indicated by including it in the RRC configuration message 1040. In this case, the base station can specify the specific cell or specific BWP to which the terminal simultaneously transmits overlapping configuration grant resources. Therefore, the terminal can determine whether to apply simultaneous transmission to overlapping configuration grant resources or to use... Figure 6 , Figure 7 , Figure 8 and Figure 9 Whether to send using the alternative resources described in the document, or to use only one of the overlapping resources.

[0064] In embodiments of this disclosure, the base station can configure conditions for simultaneous transmission. For example, if there is data to be transmitted by a logical channel with a higher priority, simultaneous transmission can be performed even if the configuration grant resources overlap. For instance, simultaneous transmission can be allowed for logical channels with a priority higher than 4, regardless of the overlapping configuration grant resources. In this case, if the logical channel with the first configuration grant should have a priority of 2 and the logical channel with the second configuration grant should have a priority of 1, both of which are higher than priority 4, all data transmission can be performed even if the two configuration grants overlap.

[0065] Figure 11 This is a view showing the structure of a terminal according to an embodiment of the present disclosure.

[0066] refer to Figure 11 The terminal may include a transceiver 1110, a controller 1120, and a storage device 1130. In this disclosure, the controller may be defined as a circuit or an application-specific integrated circuit or at least one processor.

[0067] Transceiver 1110 can send and receive signals with another network entity. Transceiver 1110 can receive system information from, for example, a base station, and can receive synchronization signals or reference signals.

[0068] According to the embodiments presented in this disclosure, controller 1120 can control the overall operation of the terminal. For example, controller 1120 can control the signal flow between blocks to perform operations according to the flowchart above.

[0069] Storage device 1130 can store at least one of information sent and received by transceiver 1110 and information generated by controller 1120.

[0070] Figure 12 This is a view showing the structure of a base station according to an embodiment of the present disclosure.

[0071] refer to Figure 12 The base station may include a transceiver 1210, a controller 1220, and a storage device 1230. In this disclosure, the controller 1220 may be defined as a circuit or an application-specific integrated circuit or at least one processor.

[0072] Transceiver 1210 can send and receive signals with another network entity. Transceiver 1210 can send system information to, for example, a terminal, and can send synchronization signals or reference signals.

[0073] According to the embodiments presented in this disclosure, controller 1220 can control the overall operation of the terminal. For example, controller 1220 can control the signal flow between blocks to perform operations according to the flowchart above.

[0074] Storage device 1230 can store at least one of the information sent and received by transceiver 1210 and the information generated by controller 1220.

[0075] Figure 13 The operation process of alternative resource transfer when configuration authorization overlaps is illustrated according to an embodiment of the present disclosure.

[0076] refer to Figure 13 As described above, when two or more configuration grant resources overlap, the terminal can be instructed to send to an alternative resource with lower priority radio resources. Furthermore, even when configuration grant resources and dynamic grant resources overlap, or when two or more dynamic grant resources overlap, the terminal can still be instructed to send to an alternative resource. Additionally, if control information such as a scheduling request overlaps with a configuration grant or dynamic grant resource, and the configuration grant or dynamic grant has lower priority, the terminal can still be instructed to send to an alternative resource. According to embodiments of this disclosure, these alternative resources can be communicated in advance via RRC configuration or reconfiguration messages, or via DCI using PDCCH.

[0077] In embodiments of this disclosure, these alternative resources may be retransmission resources for the same Hybrid ARQ (HARQ) process with a lower priority configuration grant or dynamic grant. In the case of configuration grant, the resources allocated by the Configuration Scheduling Radio Network Temporary Identifier RNTI (CS-RNTI) may be alternative resources that use these retransmission resources, rather than enabling or disabling Type 2 configuration grant. In operation 1310, due to radio resource conflicts, the terminal may assume that the configuration grant has a lower priority than other resources. At this time, the terminal may identify whether a Media Access Control Protocol Data Unit (MAC PDU) scheduled to be sent to the lower priority configuration grant has already been generated or sent to a lower physical layer. If a MAC PDU scheduled to be sent to the lower priority configuration grant has been generated in operation 1320, then in operation 1330, the terminal may send or retransmit the MAC PDU already generated in the alternative resources to the lower priority configuration grant. Here, the already generated MAC PDU may mean a MAC PDU stored in the HARQ buffer corresponding to the HARQ process. On the other hand, if a MAC PDU to be sent with a low-priority configuration authorization has not yet been generated in operation 1320, the terminal does not need to generate the corresponding MAC PDU. However, since a previously sent MAC PDU may be retained in the HARQ buffer of the corresponding HARQ process, and this MAC PDU is not the one that the terminal is to send at this time, the retained MAC PDU should be removed. Therefore, in operation 1340, the terminal can clear the HARQ buffer of the same HARQ process without generating a MAC PDU. In this way, the terminal can then recognize that the HARQ buffer is empty when transmitting alternative resources and generate a new MAC PDU to be sent. If so, in operation 1350, the terminal can send the newly generated MAC PDU in the corresponding alternative resource.

[0078] Figure 14 The operation process of alternative resource transfer when configuration authorization overlaps is illustrated according to an embodiment of the present disclosure.

[0079] refer to Figure 14As described above, when two or more configuration grant resources overlap, the terminal can be instructed to send to an alternative resource with a lower priority radio resource. Furthermore, even when configuration grant resources and dynamic grant resources overlap, or when two or more dynamic grant resources overlap, the terminal can still be instructed to send to an alternative resource. Additionally, if control information such as a scheduling request overlaps with a configuration grant or dynamic grant resource, and the configuration grant or dynamic grant has a lower priority, the terminal can still be instructed to send to an alternative resource. According to embodiments of this disclosure, these alternative resources can be communicated in advance via RRC configuration or reconfiguration messages, or they can be notified via DCI using PDCCH.

[0080] In embodiments of this disclosure, these alternative resources may be retransmission resources for the same HARQ process with a lower-priority configuration grant or dynamic grant. In operation 1410, due to radio resource conflicts, the terminal may assume that the dynamic grant has a lower priority than other resources (configuration grant, dynamic grant, control information such as scheduling requests). At this time, the terminal may identify whether a MAC PDU scheduled to be sent to the lower-priority dynamic grant has already been generated or sent to a lower physical layer. If a MAC PDU scheduled to be sent to the lower-priority dynamic grant has been generated in operation 1420, then in operation 1430, the terminal may send or retransmit the MAC PDU already generated in the alternative resources to the lower-priority dynamic grant. Here, the already generated MAC PDU may mean a MAC PDU stored in the HARQ buffer corresponding to the HARQ process. On the other hand, if a MAC PDU to be sent to the lower-priority dynamic grant has not yet been generated in operation 1420, the terminal does not need to generate the corresponding MAC PDU. However, since previously sent MAC PDUs may be retained in the HARQ buffer of the corresponding HARQ process, and this MAC PDU is not the one that the terminal is to send at this time, the retained MAC PDU should be removed. Therefore, in operation 1440, the terminal can clear the HARQ buffer of the same HARQ process without generating a MAC PDU. In this way, the terminal can then recognize that the HARQ buffer is empty when transmitting alternative resources and generate a new MAC PDU to be sent. If so, in operation 1450, the terminal can send the newly generated MAC PDU in the corresponding alternative resource.

[0081] While various embodiments of the present disclosure have been described and illustrated, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents.

Claims

1. A method for a terminal in a wireless communication system, the method comprising: Based on the conflict of resources associated with uplink grants, it is determined whether the first configuration grant is a prioritized uplink grant, wherein the uplink grant includes the first configuration grant and the second configuration grant; If the first configuration authorization is a de-prioritized uplink authorization, identify whether a Media Access Control (MAC) Protocol Data Unit (PDU) corresponding to the data associated with the first configuration authorization has been generated; If the first configuration grant is a de-prioritized uplink grant and no MAC PDU is generated, refresh the buffer corresponding to the Hybrid Automatic Repeat Request (HARQ) process. Obtain configuration information for identifying alternative resources, the configuration information including time-shift information and frequency-shift information for the resources authorized by the configuration; If the first configuration grant is a de-prioritized uplink grant and the MAC PDU is generated, identify alternative resources for the first configuration grant based on the obtained configuration information; as well as The generated MAC PDU is sent on the alternative resource used for the first configuration authorization.

2. The method according to claim 1, further comprising: Identify whether the resources associated with the first configuration authorization conflict with the resources associated with another uplink authorization. Another uplink authorization is at least one of configuration authorization, dynamic authorization, and authorization for control information.

3. A terminal in a wireless communication system, the terminal comprising: A transceiver is configured to send and receive signals; and At least one processor is configured as follows: Based on resource conflicts associated with uplink grants, it is determined whether the first configuration grant is a prioritized uplink grant, wherein the uplink grant includes the first configuration grant and the second configuration grant. If the first configuration grant is a de-prioritized uplink grant, identify whether a Media Access Control (MAC) Protocol Data Unit (PDU) corresponding to the data associated with the first configuration grant has been generated. If the first configuration grant is a de-prioritized uplink grant and no MAC PDU is generated, control is performed to refresh the buffer corresponding to the Hybrid Automatic Repeat Request (HARQ) process. Obtain configuration information for identifying alternative resources, the configuration information including time-shift and frequency-shift information for the resources authorized by the configuration. If the first configuration grant is a de-prioritized uplink grant and the MAC PDU is generated, identify alternative resources for the first configuration grant based on the obtained configuration information, and The generated MAC PDU is transmitted via the transceiver on an alternative resource authorized by the first configuration.

4. The terminal according to claim 3, wherein, The at least one processor is further configured to: Identify whether the resources associated with the first configuration authorization conflict with the resources associated with another uplink authorization. Another uplink authorization is at least one of configuration authorization, dynamic authorization, and authorization for control information.

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