Method and apparatus for processing transmission based on uplink subband.

Abstract

The present disclosure is directed generally to wireless communication systems and methods, and particularly to resource configuration and allocation for time division duplexing. Various implementations described below relate to scheduling and allocation of time-frequency communication resources within an uplink subband configured within a set of resources otherwise configured for downlink transmission or for transmission with flexible direction. Various embodiments are described below for dynamically scheduling downlink transmissions within resources of an uplink subband to modify / extend resources for the uplink subband in order to improve the balance of uplink and downlink transmission resources in real time. The disclosure below further provides various implementations for resolving uplink and downlink transmission time conflicts within an uplink subband and for transmitting a downlink reference signal across a UL subband.

Description

【Technical Field】 【0001】 The present disclosure generally relates to wireless communication systems and methods, and more particularly to resource configurations and allocations for time division multiplexing. 【Background Art】 【0002】 Terrestrial radio resources are important components in a wireless communication network. Effective communication greatly depends on the efficient allocation of these resources. Communication between a base station and a terminal device, either in the uplink direction or the downlink direction, shares these resources. Reduction and elimination of signal interference and contention during such sharing are often important aspects when designing an efficient wireless communication system. 【Summary of the Invention】 【Means for Solving the Problems】 【0003】 The present disclosure generally relates to wireless communication systems and methods, and more particularly to time division multiplexing of frequency resources. 【0004】 In some exemplary implementations, a method implemented by a wireless terminal device is disclosed. The method includes receiving, from a radio access network node, an allocation of a first set of time-frequency resources as downlink or direction-flexible time-frequency resources, and receiving, from the radio access network node, a configuration of an uplink sub-band for uplink transmission, the uplink sub-band occupying contiguous resource blocks within a frequency within the first set of time-frequency resources and a set of symbols within time. 【0005】 In the exemplary implementation described above, the method may further include the step of receiving a scheduling of a second set of time-frequency resources for uplink transmission from a radio access network node, wherein the second set of time-frequency resources is partially located within and partially outside the uplink subband in time. 【0006】 In any one of the above implementations, the uplink subband configuration is received from the radio access network node via semi-static radio resource control (RRC) signaling or a media access control (MAC) control element (CE). 【0007】 In any one of the above implementations, a portion of the second set of time-frequency resources outside the uplink subband is implemented as time-domain tuning for the uplink subband. 【0008】 In any one of the above implementations, time-domain adjustment for the uplink subband is effective only during the scheduling of the second set of time-frequency resources for uplink transmission, or until the next time-domain adjustment for the uplink subband, or over a predetermined or configured period following the scheduling of the second set of time-frequency resources for uplink transmission. 【0009】 In any one of the above implementations, the scheduling of the second set of time-frequency resources is received from the radio access network node as a downlink control information (DCI) message. 【0010】 In any one of the above implementations, the uplink subband configuration is transmitted in response to a radio access network node receiving a capability report from a radio terminal device, the capability report indicating that the radio terminal device supports subband full duplex (SBFD) or supports the use of a second set of time-frequency resources for uplink transmission. 【0011】 In any one of the above implementations, the DCI message includes one or more parameters indicating the time and frequency location of a second set of time-frequency resources to the wireless terminal device. 【0012】 In any one of the above implementations, the DCI message includes an indicator to the wireless terminal device that the uplink subband should be extended according to a second set of time-frequency resources. 【0013】 In any one of the above implementations, the radio access network node is prohibited from further scheduling any resources that are outside the uplink subband but within the frequency resource range of the uplink subband and that coexist in time with a second set of time-frequency resources. 【0014】 In any one of the above implementations, a flexible resource is configured within the uplink subband time-frequency resource by signaling from radio access network nodes relating to the uplink subband, or a portion of the uplink subband time-frequency resource is configured as a flexible resource by signaling. 【0015】 In any one of the above implementations, the transmission direction of the flexible resource is determined based on the transmission direction scheduled within the flexible resource. 【0016】 In any one of the above implementations, the flexible resource configured within the uplink subband contains one or more OFDM symbols across the entire frequency range of the uplink subband. 【0017】 In any one of the above implementations, the flexible resources configured within the uplink subband include one or more frequency resource blocks spanning the entire OFDM symbol range of the uplink subband. 【0018】 In any one of the above implementations, signaling includes RRC signaling. 【0019】 In any one of the above implementations, the flexible resource is configured in response to a radio access network node receiving a capability report from a radio terminal device, which indicates that the radio terminal device supports subband full duplex (SBFD) or that the radio terminal device supports a flexible resource within the uplink subband. 【0020】 Another exemplary implementation discloses a method implemented by a wireless terminal. This method may include the steps of: receiving an allocation of a first set of time-frequency resources from a wireless access network node as a downlink or directional flexible time-frequency resource; receiving a configuration of an uplink subband for uplink transmission from the wireless access network node, wherein the uplink subband occupies a contiguous block of resources in the frequencies within the first set of time-frequency resources and a set of OFDM symbols in time; and receiving a downlink transmission from the wireless access network node within the configured uplink subband. 【0021】 In the above implementation, the step of receiving downlink transmissions within the configured uplink subband may include receiving signaling from a radio access network node for scheduling downlink transmissions within at least one portion of the uplink subband. 【0022】 In any one of the above implementations, at least one portion of the uplink subband overlaps with at least one other portion of the uplink subband and does not correspond to any other portion of the uplink subband scheduled for uplink transmission. 【0023】 In any one of the above implementations, signaling is included within the DCI from the radio access network node when scheduling downlink transmissions. 【0024】 In any one of the above implementations, the radio access network node is prohibited from further scheduling uplink transmissions over a second set of time-frequency resources that overlap with at least one portion of the configured uplink subband in time and are within the frequency resource range of the configured uplink subband. 【0025】 In any one of the above implementations, the method may further include the step of determining a first priority level for an uplink subband, the first priority level being used as a basis for determining whether downlink transmissions are allowed to be scheduled within the uplink subband. 【0026】 In any one of the above implementations, downlink transmission is enabled when the first priority level of the uplink subband is lower than the second priority level associated with downlink transmission, and downlink transmission is prohibited when the first priority level of the uplink subband is higher than the second priority level associated with downlink transmission. 【0027】 In any one of the above implementations, the method may further include steps of resolving scheduling conflicts between two downlink transmissions of the same priority or between a downlink transmission and an uplink transmission, with time duplication within the uplink sub-band, by maintaining transmissions inside the frequency range of the uplink sub-band and discarding transmissions outside the frequency range of the uplink sub-band. 【0028】 In any one of the above implementations, the method may further include steps of prohibiting dynamic PDSCH downlink transmissions and dynamic PUSCH / PUCCH from being scheduled by the same PDCCH with overlapping time within the uplink sub-band. 【0029】 In any one of the above implementations, the method may further include steps of resolving scheduling conflicts between dynamic PDSCH downlink transmissions and dynamic PUSCH / PUCCH uplink transmissions that overlap in time within the uplink sub-band, based on the timing of individual scheduling PDCCHs for the dynamic PDSCH downlink transmissions and the dynamic PUSCH / PUCCH uplink transmissions. 【0030】 In any one of the above implementations, the method may further include steps of resolving scheduling conflicts between dynamic PDSCH downlink transmissions and semi-static PUSCH / PUCCH uplink transmissions that overlap in time within the uplink sub-band, based on OFDM symbol-level time separation between individual scheduling PDCCHs for the dynamic PDSCH downlink transmissions and the semi-static PUSCH / PUCCH uplink transmissions. 【0031】 In any one of the above implementations, the method may further include the step of resolving scheduling conflicts between dynamic PDSCH downlink transmissions and semi-static PUSCH / PUCCH uplink transmissions that overlap within the time frame of the uplink subband by maintaining semi-static PUSCH / PUCCH uplink transmissions and discarding dynamic PDSCH downlink transmissions. 【0032】 In any one of the above implementations, the method may further include the step of resolving scheduling conflicts between semi-static PDSCH downlink transmissions and dynamic PUSCH / PUCCH uplink transmissions that overlap within the time frame of the uplink subband by maintaining dynamic PUSCH / PUCCH uplink transmissions and discarding semi-static PDSCH downlink transmissions. 【0033】 In any one of the above implementations, the method may further include the step of resolving scheduling conflicts between semi-static PDSCH downlink transmissions and semi-static PUSCH / PUCCH uplink transmissions that overlap within the time frame of the uplink subband by maintaining semi-static PUSCH / PUCCH uplink transmissions and discarding semi-static PDSCH downlink transmissions. 【0034】 In any one of the above implementations, the method may further include configuring the downlink transmission to transmit a downlink reference signal within the uplink subband. 【0035】 In some other implementations, methods are disclosed that are carried out by radio access network nodes (or base stations). These methods correspond to methods carried out by the above-mentioned radio terminal devices during their communications in the step of semi-statically and dynamically configuring and reconfiguring uplink subbands, uplink transmission / reception and downlink transmission / reception across uplink subbands. 【0036】 In some other implementations, a wireless communication device is disclosed. The wireless communication device may include a processor and memory, the processor being configured to read code from memory and implement one of the methods described above. 【0037】 Furthermore, several other implementations disclose a computer program product comprising a non-transient computer-readable program medium on which computer code is stored. When the computer code is executed by a processor, the processor may be prompted to implement one of the methods described above. 【0038】 The above embodiments and other aspects and alternatives of their implementation are described in more detail in the following drawings, description, and claims. The present invention provides, for example, the following: (Item 1) A method implemented by a wireless access network node, Allocating a first set of time-frequency resources to user equipment (UE) as downlink or directional flexible time-frequency resources, To constitute an uplink subband for uplink transmission relating to the above UE, wherein the uplink subband occupies a contiguous resource block in frequency within a first set of time-frequency resources and a set of symbols in time. Methods that include... (Item 2) The method according to item 1, further comprising scheduling a second set of time-frequency resources for uplink transmission with respect to the above-mentioned UE, wherein the second set of time-frequency resources is partially located within and partially outside the above-mentioned uplink subband in time. (Item 3) The method described in item 2, wherein the configuration of the uplink subband is performed by the radio access network node via semi-static radio resource control (RRC) signaling or media access control (MAC) control element (CE). (Item 4) The method according to item 3, wherein a portion of the second set of time-frequency resources located outside the uplink subband is implemented as time-domain adjustment for the uplink subband. (Item 5) The method of item 4, wherein the time domain adjustment for the uplink subband is effective only during the scheduling of the second set of time-frequency resources for the uplink transmission, or until the next time domain adjustment for the uplink subband, or over a predetermined or configured period following the scheduling of the second set of time-frequency resources for the uplink transmission. (Item 6) The scheduling of the second set of time-frequency resources is performed by the radio access network node via downlink control information (DCI) messages, as described in item 3. (Item 7) The method of item 6, wherein the configuration of the uplink subband is performed in response to the radio access network node receiving a capability report from the UE, the capability report indicating that the UE supports subband full duplex (SBFD) or that the UE supports using a second set of time-frequency resources for the uplink transmission. (Item 8) The method described in item 6, wherein the DCI message includes one or more parameters indicating the time and frequency locations of a second set of time-frequency resources to the UE. (Item 9) The method according to item 6, wherein the DCI message includes an indicator to the UE indicating that the uplink subband should be extended according to a second set of time-frequency resources. (Item 10) The method of item 2, wherein the above-mentioned wireless access network node is outside the above-mentioned uplink subband and is prohibited from further scheduling any resources that coexist in time with a portion of the above-mentioned second set of time-frequency resources that are within the frequency resource range of the above-mentioned uplink subband. (Item 11) Flexible resources are configured within the time-frequency resources of the uplink subband by signaling relating to the uplink subband, or A portion of the time-frequency resources in the uplink subband described above can be configured as a flexible resource through the signaling described above. The method described in item 1. (Item 12) The method according to item 11, wherein the transmission direction of the flexible resource is determined based on the transmission direction scheduled within the flexible resource. (Item 13) The method described in item 12, wherein the flexible resource configured within the uplink subband includes one or more OFDM symbols across the entire frequency range of the uplink subband. (Item 14) The method described in item 12, wherein the flexible resources configured within the uplink subband include one or more frequency resource blocks spanning the entire OFDM symbol range of the uplink subband. (Item 15) The above signaling is the method described in item 11, including RRC signaling. (Item 16) The method described in item 11, wherein the flexible resource is configured in response to the radio access network node receiving a capability report from the UE, the capability report indicating that the UE supports subband full duplex (SBFD) or that the UE supports the flexible resource within the uplink subband. (Item 17) A method implemented by a wireless access network node, Allocating a first set of time-frequency resources to user equipment (UE) as downlink or directional flexible time-frequency resources, To constitute an uplink subband for uplink transmission relating to the above UE, wherein the uplink subband occupies a contiguous resource block within a frequency within a first set of the above time-frequency resources and a set of OFDM symbols within a time. The downlink transmission is transmitted within the uplink subband configured as described above. Methods that include... (Item 18) The method of item 17, wherein transmitting the downlink transmission within the uplink subband configured above includes generating signaling to the UE for scheduling the downlink transmission within at least one portion of the uplink subband. (Item 19) The method according to item 18, wherein at least one portion of the uplink subband overlaps with at least one portion of the uplink subband and does not correspond to any other portion of the uplink subband that is scheduled for uplink transmission. (Item 20) The above signaling is included in the DCI to the UE when scheduling the above downlink transmission, as described in item 18. (Item 21) The method according to item 20, wherein the above-mentioned wireless access network node is prohibited from further scheduling uplink transmissions over a second set of time-frequency resources that overlap with at least one portion of the above-mentioned configured uplink subband in time and are within the frequency resource range of the above-mentioned configured uplink subband. (Item 22) The method of item 17, further comprising configuring a first priority level for the uplink subband, wherein the first priority level is used as a basis for determining whether downlink transmissions are allowed to be scheduled within the uplink subband. (Item 23) The downlink transmission described above is enabled when the first priority level of the uplink subband is lower than the second priority level associated with the downlink transmission. The downlink transmission described above is prohibited if the first priority level of the uplink subband is higher than the second priority level associated with the downlink transmission described above. The method described in item 22. (Item 24) The method of item 17, further comprising resolving scheduling conflicts between two downlink transmissions of the same priority with time overlap within the uplink subband, or between a downlink transmission and an uplink transmission, by maintaining transmissions within the frequency range of the uplink subband and discarding transmissions outside the frequency range of the uplink subband. (Item 25) The method of item 17, further comprising prohibiting the scheduling of dynamic PDSCH downlink transmission and dynamic PUSCH / PUCCH by the same PDCCH with overlapping time within the uplink subband. (Item 26) The method of item 17, further comprising resolving scheduling conflicts between overlapping dynamic PDSCH downlink transmissions and dynamic PUSCH / PUCCH uplink transmissions within the time frame of the uplink subband, based on the timing of separate scheduled PDCCHs for the above-mentioned dynamic PDSCH downlink transmissions and the above-mentioned dynamic PUSCH / PUCCH uplink transmissions. (Item 27) The method of item 17, further comprising resolving scheduling conflicts between overlapping dynamic PDSCH downlink transmissions and semi-static PUSCH / PUCCH uplink transmissions within the uplink subband, based on OFDM symbol-level time separation between separate scheduled PDCCHs for the dynamic PDSCH downlink transmissions and the semi-static PUSCH / PUCCH uplink transmissions. (Item 28) The method of item 17, further comprising resolving scheduling conflicts between overlapping dynamic PDSCH downlink transmissions and semi-static PUSCH / PUCCH uplink transmissions within the uplink subband in time, by maintaining the above-mentioned semi-static PUSCH / PUCCH uplink transmissions and discarding the above-mentioned dynamic PDSCH downlink transmissions. (Item 29) The method of item 17, further comprising resolving scheduling conflicts between overlapping semi-static PDSCH downlink transmissions and dynamic PUSCH / PUCCH uplink transmissions within the uplink subband in time, by maintaining the dynamic PUSCH / PUCCH uplink transmissions and discarding the semi-static PDSCH downlink transmissions. (Item 30) The method of item 17, further comprising resolving scheduling conflicts between overlapping semi-static PDSCH downlink transmissions and semi-static PUSCH / PUCCH uplink transmissions within the time frame of the uplink subband by maintaining the above-mentioned semi-static PUSCH / PUCCH uplink transmissions and discarding the above-mentioned semi-static PDSCH downlink transmissions. (Item 31) The downlink transmission described above is configured to transmit a downlink reference signal within the uplink subband, as described in item 17. (Item 32) A method carried out by a wireless terminal device, Receiving an allocation of a first set of time-frequency resources from a wireless access network node as a downlink or directional flexible time-frequency resource, Receiving the configuration of an uplink subband for uplink transmission from the above-mentioned wireless access network node, wherein the uplink subband occupies a contiguous resource block in frequency within the first set of time-frequency resources and a set of symbols in time. Methods that include... (Item 33) The method of item 32, further comprising receiving the scheduling of a second set of time-frequency resources for uplink transmission from the above-mentioned wireless access network node, wherein the second set of time-frequency resources is partially located within and partially outside the above-mentioned uplink subband in time. (Item 34) The configuration of the uplink subband described above is received from the radio access network node via semi-static radio resource control (RRC) signaling or media access control (MAC) control element (CE), as described in item 33. (Item 35) The method according to item 34, wherein a portion of the second set of time-frequency resources located outside the uplink subband is implemented as time-domain adjustment for the uplink subband. (Item 36) The method of item 35, wherein the time domain adjustment for the uplink subband is effective only during the scheduling of the second set of time-frequency resources for the uplink transmission, or until the next time domain adjustment for the uplink subband, or over a predetermined or configured period following the scheduling of the second set of time-frequency resources for the uplink transmission. (Item 37) The scheduling of the second set of time-frequency resources described above is received from the radio access network node as downlink control information (DCI) messages, as described in item 34. (Item 38) The configuration of the uplink subband described above is transmitted in response to the radio access network node receiving a capability report from the radio terminal device, the capability report indicating that the radio terminal device supports subband full duplex (SBFD) or that the radio terminal device supports using a second set of time-frequency resources for the uplink transmission, as described in Item 37. (Item 39) The method according to item 37, wherein the DCI message includes one or more parameters indicating the time and frequency location of a second set of time-frequency resources to the wireless terminal device. (Item 40) The method according to item 37, wherein the DCI message includes an indicator to the wireless terminal device indicating that the uplink subband should be extended according to a second set of time-frequency resources. (Item 41) The method of item 33, wherein the above-mentioned wireless access network node is outside the above-mentioned uplink subband and is prohibited from further scheduling any resources that coexist in time with a portion of the above-mentioned second set of time-frequency resources that are within the frequency resource range of the above-mentioned uplink subband. (Item 42) The flexible resource is comprised of signaling from the radio access network node relating to the uplink subband within the time-frequency resource of the uplink subband, or A portion of the time-frequency resources in the uplink subband described above can be configured as a flexible resource through the signaling described above. The method described in item 32. (Item 43) The method according to item 42, wherein the transmission direction of the flexible resource is determined based on the transmission direction scheduled within the flexible resource. (Item 44) The flexible resource configured within the uplink subband includes one or more OFDM symbols across the entire frequency range of the uplink subband, as described in item 43. (Item 45) The method described in item 43, wherein the flexible resources configured within the uplink subband include one or more frequency resource blocks spanning the entire OFDM symbol range of the uplink subband. (Item 46) The above signaling is the method described in item 42, including RRC signaling. (Item 47) The method described in item 42, wherein the flexible resource is configured in response to the radio access network node receiving a capability report from the radio terminal device, the capability report indicating that the radio terminal device supports subband full duplex (SBFD) or that the radio terminal device supports the flexible resource within the uplink subband. (Item 48) A method carried out by a wireless terminal device, Receiving an allocation of a first set of time-frequency resources from a wireless access network node as a downlink or directional flexible time-frequency resource, Receiving the configuration of an uplink subband for uplink transmission from the above-mentioned wireless access network node, wherein the uplink subband occupies a contiguous resource block within a frequency within a first set of time-frequency resources and a set of OFDM symbols within a time. The above wireless access network node receives downlink transmissions within the configured uplink subband. Methods that include... (Item 49) The method of item 48, wherein receiving the downlink transmission within the uplink subband configured above includes receiving a signal from the radio access network node for scheduling the downlink transmission within at least one portion of the uplink subband. (Item 50) The method according to item 49, wherein at least one portion of the uplink subband overlaps with at least one portion of the uplink subband and does not correspond to any other portion of the uplink subband that is scheduled for uplink transmission. (Item 51) The above signaling is included in the DCI from the radio access network node when scheduling the downlink transmission, as described in item 49. (Item 52) The method according to item 51, wherein the above-mentioned wireless access network node is prohibited from further scheduling uplink transmissions over a second set of time-frequency resources that overlap with at least one portion of the above-mentioned configured uplink subband in time and are within the frequency resource range of the above-mentioned configured uplink subband. (Item 53) The method of item 48, further comprising determining a first priority level for the uplink subband, wherein the first priority level is used as a basis for determining whether downlink transmissions are allowed to be scheduled within the uplink subband. (Item 54) The downlink transmission described above is enabled when the first priority level of the uplink subband is lower than the second priority level associated with the downlink transmission. The downlink transmission described above is prohibited if the first priority level of the uplink subband is higher than the second priority level associated with the downlink transmission described above. The method described in item 53. (Item 55) The method of item 48, further comprising resolving scheduling conflicts between two downlink transmissions of the same priority with time overlap within the uplink subband, or between a downlink transmission and an uplink transmission, by maintaining transmissions within the frequency range of the uplink subband and discarding transmissions outside the frequency range of the uplink subband. (Item 56) The method of item 48, further comprising prohibiting the scheduling of dynamic PDSCH downlink transmission and dynamic PUSCH / PUCCH by the same PDCCH with overlapping time within the uplink subband. (Item 57) The method of item 48, further comprising resolving scheduling conflicts between overlapping dynamic PDSCH downlink transmissions and dynamic PUSCH / PUCCH uplink transmissions within the time frame of the uplink subband, based on the timing of separate scheduling PDCCHs for the above-mentioned dynamic PDSCH downlink transmissions and the above-mentioned dynamic PUSCH / PUCCH uplink transmissions. (Item 58) The method of item 48, further comprising resolving scheduling conflicts between overlapping dynamic PDSCH downlink transmissions and semi-static PUSCH / PUCCH uplink transmissions within the uplink subband, based on OFDM symbol-level time separation between separate scheduled PDCCHs for the dynamic PDSCH downlink transmissions and the semi-static PUSCH / PUCCH uplink transmissions. (Item 59) The method of item 48, further comprising resolving scheduling conflicts between overlapping dynamic PDSCH downlink transmissions and semi-static PUSCH / PUCCH uplink transmissions within the uplink subband in time, by maintaining the above-mentioned semi-static PUSCH / PUCCH uplink transmissions and discarding the above-mentioned dynamic PDSCH downlink transmissions. (Item 60) The method of item 48, further comprising resolving scheduling conflicts between overlapping semi-static PDSCH downlink transmissions and dynamic PUSCH / PUCCH uplink transmissions within the time frame of the uplink subband by maintaining the dynamic PUSCH / PUCCH uplink transmissions and discarding the semi-static PDSCH downlink transmissions. (Item 61) The method of item 48, further comprising resolving scheduling conflicts between overlapping semi-static PDSCH downlink transmissions and semi-static PUSCH / PUCCH uplink transmissions within the time frame of the uplink subband by maintaining the above-mentioned semi-static PUSCH / PUCCH uplink transmissions and discarding the above-mentioned semi-static PDSCH downlink transmissions. (Item 62) The downlink transmission described above is configured to transmit a downlink reference signal within the uplink subband, as described in item 48. (Item 63) A wireless access network node according to any one of items 1-62, comprising memory for storing instructions and a processor for executing the instructions described in any one of items 1-62. (Item 64) A computer-readable non-transient medium for storing computer instructions, wherein the computer instructions, when executed by a processor of a wireless access network node described in any one of items 1-62, perform the method described in any one of items 1-62. [Brief explanation of the drawing] 【0039】 [Figure 1] Figure 1 illustrates an exemplary wireless communication network, including a wireless access network, a core network, and a data network. 【0040】 [Figure 2] Figure 2 illustrates an exemplary radio access network, which includes multiple mobile stations or UEs and radio access network nodes communicating with each other via a terrestrial radio communication interface. 【0041】 [Figure 3] Figure 3 shows an exemplary time slot structure illustrating the time-frequency resources for the uplink subband. 【0042】 [Figure 4] Figure 4 shows an exemplary time slot structure illustrating the time-frequency resources for the uplink subband. 【0043】 [Figure 5] Figure 5 shows an exemplary time slot structure illustrating the time-frequency resources for the uplink subband. 【0044】 [Figure 6]Figure 6 shows an exemplary time slot structure illustrating the adjustment of time-frequency resources for the uplink subband. 【0045】 [Figure 7] Figure 7 shows an exemplary time slot structure illustrating the adjustment of time-frequency resources for the uplink subband. 【0046】 [Figure 8] Figure 8 shows an exemplary time slot structure illustrating the adjustment of time-frequency resources for the uplink subband. 【0047】 [Figure 9] Figure 9 shows an exemplary time slot structure illustrating the adjustment of time-frequency resources for the uplink subband. 【0048】 [Figure 10] Figure 10 shows an exemplary time slot structure illustrating the configuration of downlink resources within the uplink subband. 【0049】 [Figure 11] Figure 11 shows an exemplary time slot structure illustrating the configuration of downlink resources within the uplink subband. 【0050】 [Figure 12] Figure 12 shows an exemplary time slot structure illustrating the configuration of downlink resources within the uplink subband. 【0051】 [Figure 13] Figure 13 shows an exemplary time slot structure illustrating the configuration of downlink resources within the uplink subband. 【0052】 [Figure 14] Figure 14 shows an exemplary time slot structure illustrating the configuration of downlink resources within the uplink subband. 【0053】 [Figure 15] Figure 15 shows an exemplary time slot structure illustrating the configuration of downlink resources within the uplink subband. 【0054】 [Figure 16] Figure 16 shows an exemplary time slot structure illustrating the configuration of downlink resources within the uplink subband. [Modes for carrying out the invention] 【0055】 Detailed explanation The techniques and examples of the implementations and / or embodiments described herein can be used to facilitate the efficient configuration and allocation of uplink and downlink time-frequency communication resources within a radio access network. The term “exemplary” is used to mean “an example of” and does not imply an ideal or preferred embodiment, implementation, or designation unless otherwise noted. Section headings are used in this disclosure to facilitate understanding of the disclosed implementations and are not intended to limit the techniques disclosed in a section to only the corresponding section. The disclosed implementations may further be embodied in a variety of different forms, and therefore the scope of this disclosure or claimed subject matter is intended to be construed as not being limited to any of the embodiments described below. Various implementations may be embodied as methods, devices, components, systems, or non-transient computer-readable media. Thus, embodiments of this disclosure may take the form of, for example, hardware, software, firmware, or any combination thereof. 【0056】 This disclosure generally pertains to wireless communication systems and methods, and more specifically to resource configuration and allocation for time-division duplexing. Various implementations described in detail below relate to scheduling and allocation of time-frequency communication resources within an uplink subband, configured within a set of resources otherwise configured for downlink transmission or for transmission with flexible direction. Various embodiments for dynamically scheduling downlink transmissions within uplink subband resources to improve the balance of uplink and downlink transmission resources in real time, to modify / expand resources for the uplink subband, and to improve the balance of uplink and downlink transmission resources in real time are described below. The following disclosure further provides various implementations for resolving uplink and downlink transmission time competition within an uplink subband and for transmitting downlink reference signals across UL subbands. Overview of Wireless Networks 【0057】 An exemplary wireless communication network, shown as 100 in Figure 1, may include wireless terminal devices or user equipment (UEs) 110, 111, and 112, a carrier network 102, various service applications 140, and other data networks 150. The carrier network 102 may include, for example, access networks 120 and 121 and a core network 130. The carrier network 110 may be configured to transmit voice, data, and other information (collectively referred to as data traffic) between UEs 110, 111, and 112, between UEs and service applications 140, or between UEs and other data networks 150. The access networks 120 and 121 may be configured as various wireless access network nodes (WANNs, hereafter referred to as base stations) for interacting with UEs on one side of a communication session and with the core network 130 on the other side. The core network 130 may include various network nodes configured to control the communication session and perform network access management and traffic routing. The service application 140 is deployed outside the core network 130, but may be hosted by various application servers connected to it. Similarly, other data networks 150 may also be connected to the core network 130. 【0058】 In the wireless communication network 100 of Figure 1, the UEs may communicate with each other via a wireless access network. For example, UEs 110 and 112 may be connected and communicate via the same access network 120. The UEs may communicate with each other via both the access network and the core network. For example, UE 110 may be connected to access network 120, while UE 111 may be connected to access network 121, and therefore UEs 110 and UE 111 may communicate with each other via access networks 120 and 121 and the core network 130. The UEs may further communicate with service applications 140 and data networks 150 via the core network 130. Furthermore, the UEs may communicate with each other directly via sidelink communication, as shown by 113. 【0059】 Figure 2 further shows an exemplary system diagram of a wireless access network 120, including a WANN 202 that provides service to UEs 110 and 112 via a terrestrial interface 204. The wireless transmission resources for the terrestrial interface 204 include a combination of frequency, time, and / or spatial resources. UEs 110 and 112 may each be mobile or fixed terminal devices deployed with a mobile access unit such as a SIM / USIM module to access the wireless communication network 100. UEs 110 and 112 may each be implemented as terminal devices, including, but not limited to, mobile phones, smartphones, tablets, laptop computers, vehicle-mounted communication equipment, roadside communication equipment, sensor devices, smart appliances (such as televisions, refrigerators, and ovens), or other devices capable of communicating wirelessly over the network. As shown in Figure 2, each UE, such as UE 112, may include a transceiver network 206 coupled to one or more antennas 208, resulting in wireless communication with the WANN 120, or another UE, such as UE 110. The transceiver network 206 may also be coupled to a processor 210, which may also be coupled to a memory 212 or other storage device. The memory 212 may be transient or non-transient and may store computer instructions or code therein that, when read and executed by the processor 210, cause the processor 210 to implement various methods described herein. 【0060】 Similarly, WANN120 may include base stations or other radio network access points capable of radio communication with one or more UEs via the terrestrial interface 204 and communicating with the core network 130. For example, WANN120 may be implemented in the form of, but is not limited to, a 2G base station, a 3G nodeB, an LTE eNB, a 4G LTE base station, a 5G NR base station, a 5G central unit base station, or a 5G distributed unit base station. Each of these types of WANNs may be configured to implement a corresponding set of radio network functions. WANN202 may include a transceiver network 214 coupled to one or more antennas 216, which may include an antenna tower 218 in various forms for radio communication with UEs 110 and 112. The transceiver network 214 may be coupled to one or more processors 220, which may be coupled to memory 222 or other storage devices. Memory 222 may store instructions or code that, when read and executed by one or more processors 220, either transient or non-transient, cause one or more processors 220 to implement various functions of the WANN120 described herein. 【0061】 Data packets within a wireless access network, such as those described in the embodiment shown in Figure 2, may be transmitted as protocol data units (PDUs). The data contained therein may be packaged as PDUs in various network layers wrapped using nested and / or hierarchical protocol headers. PDUs may be communicated between a transmitting device or transmission end (these two terms are used synonymously) and a receiving device or reception end (these two terms are also used synonymously) once a connection (e.g., a radio link control (RRC) connection) is established between the transmitting and receiving ends. Either the transmitting or receiving device may be a wireless terminal device such as devices 110 and 120 in Figure 2, or a wireless access network node such as node 202 in Figure 2. Each device may be both a transmitting and receiving device for bidirectional communication. UL subband 【0062】 In a radio access communication network, with respect to a carrier or frequency band configured for time-division duplexing (TDD), each time slot is configured for either downlink (DL) or uplink (UL) communication. A time slot may also be configured as a flexible slot, which can be used for either DL or UL communication, but not for both. The term “time slot” is hereby referred to as “slot” for simplification. DL slots are usually configured in greater numbers than UL slots, as DL traffic typically dominates UL traffic in radio access networks. An exemplary typical periodic slot structure may be DDDSU, where D represents “DL slot”, U represents “UL slot”, and S represents “flexible slot”. A flexible slot may contain, for example, DL symbols and UL symbols. UL slots are therefore usually fewer in number and often discontinuous, thereby limiting the performance of UL transmission. For example, UL data volume may be limited, and more importantly, the timeliness and edge coverage of UL transmission are relatively insufficient due to frequent UL slot discontinuities. 【0063】 In some exemplary implementations, subband full duplex (SBFD) technology may be employed to provide improved UL support. For example, a time-frequency resource containing several consecutive resource blocks (RBs) in the frequency domain and several consecutive OFDM symbols in a DL or flexible slot may be configured as a UL subband. In other words, the piece of time-frequency resource referred to as the UL subband may otherwise be configured to support UL transmission in a DL or flexible slot. 【0064】 Examples of SBFD time-frequency resource configurations are illustrated in Figure 3-5. In each of Figures 3-5, the horizontal axis represents time slots in units of OFDM symbols, while the vertical axis represents frequency resources in resource blocks (RBs). A particular time slot may be configured using an allocation of DL, UL, or F (flexible) OFDM symbols (OFDM symbols will hereafter be referred to as "symbols" for simplification). For example, the time slot in Figure 3 includes nine DL symbols followed by five UL symbols. In another embodiment, the time slot in Figure 4 includes nine DL symbols followed by two F symbols, followed by three UL symbols. In yet another embodiment, the time slot in Figure 5 includes nine F symbols followed by five UL symbols. In each of Figures 3-5, an exemplary UL subband is configured, occupying one or more RBs within a frequency and several (e.g., seven) OFDM symbols within a time, otherwise in the DL (Figures 3 and 4) or F (Figure 5) OFDM symbols. Those skilled in the art will understand that the DL, UL, F symbol configurations and UL subband configurations shown in Figures 3-5 are merely non-limiting embodiments. 【0065】 In some exemplary implementations of SBFD described above, the UL subband may be configured by RRC signaling. Alternatively, the allocation and reallocation of the UL subband within DL or F-time frequency resources is therefore not entirely dynamic, but semi-static. As a result, such implementations allow for overall additional UL support when needed, but are very limited, or impossible, in providing dynamic balancing of UL and DL resources according to the real-time needs of various services and applications. In particular, SBFD based on RRC signaling does not provide dynamic and rapid reconfiguration of the UL subband when UL traffic decreases and more resources are needed for DL ​​transmission. 【0066】 One potential solution for providing more real-time allocation in SBFD is to enable dynamic scheduling of DL transmissions within the time-frequency resources of the UL subband already configured by the RRC, as will be described in more detail in the various embodiments below. 【0067】 Furthermore, if DL transmission is enabled within the time-frequency resources of the UL subband, this will create new problems. For example, within the time-frequency resources of the UL subband, various potential DL transmissions and various potential UL transmissions may overlap in the time domain. How to resolve these time-domain overlaps? This application also presents several solutions. 【0068】 In addition, this disclosure also provides a new UL scheduling transmission based on UL subband, which can dynamically balance DL and UL resources, thereby improving resource utilization. Dynamic adjustment of the UL subband to include additional symbols 【0069】 In some exemplary implementations, UL transmission within the UL subband at configuration may be dynamically adjusted when it is determined that more UL time-frequency resources are required in real time, and may be extended within slots in the time domain to include additional OFDM symbols outside the UL subband at configuration. 【0070】 In such a configuration, the original RRC allocation by the base station of the UL subband within a DL or F time slot may be determined based on the expected UL transmission needs of the service or application associated with a particular RRC session. The semi-static RRC allocation of the UL subband may be made toward conservative purposes (smaller UL resource allocation), taking into account that the UL subband may be dynamically adjusted / expanded over time. If, during an RRC session, UL traffic becomes more congested than expected and the conservative semi-static UL subband allocation becomes insufficient to effectively handle the UL traffic at that time, the UL transmissions scheduled within the UL subband may be dynamically adjusted / expanded within the time domain to additional OFDM symbols outside the UL subband. In some exemplary implementations, the expanded UL symbols may occupy RBs within the semi-statically configured UL subband. In some specific implementations, the expanded UL symbols may occupy the same RBs in the semi-statically configured UL subband allocated / scheduled for UL transmission. 【0071】 The above exemplary implementation may be significant in providing adaptive and dynamic balancing between UL resource allocation and DL resource allocation while leaving any preceding subband filtering techniques (including filter design, and frequency locking, and equivalents) unimpeded, since the frequency domain resources of the UL subband may not need to change (only time resources are extended) (which is beneficial for subband filter design and frequency locking). 【0072】 The time-frequency resources of the UL subband, including symbols extended within the RB of the UL subband, may be used by any UL transmission, including, but not limited to, one of the following: PUSCH (Physical Uplink Shared Channel), PRACH (Physical Random Access Channel), PUCCH (Physical Uplink Control Channel), or SRS (Sounding Reference Signal), which are scheduled by DCI (Downlink Control Information) and / or constituted by RRC signaling. PUCCH communication includes, for example, uplink communication carrying HARQ-ACK (Hybrid Auto Retransmission Request Acknowledgment), CSI (Channel Status Indication), or SR (Scheduling Request). HARQ-ACK includes, for example, an uplink HARQ-ACK corresponding to PDSCH (Physical Downlink Shared Channel) communication and an uplink HARQ-ACK corresponding to PDCCH (Physical Downlink Control Channel) communication. 【0073】 In some exemplary implementations, dynamic time extension of UL transmissions may be scheduled using DCI. In certain exemplary implementations, the UL subband may be semi-statically configured for the UE so that the UE is aware of the time-frequency resources of the UL subband. Then, when the DCI from the corresponding base station is used within the PDCCH to schedule uplink transmissions (e.g., PUSCH / PUCCH / PRACH transmissions) using the UL subband resources, parameters may be introduced into the DCI to achieve the dynamic time extension described above. These parameters may be included, for example, for one of the following purposes: 【0074】 (1) This may be used to indicate that the time domain resources of the UL subband are being regulated, and that the regulated time domain resources of the UL subband further include symbols outside the UL subband that are configured / indicated / scheduled by the DCI for UL transmissions (e.g., PUSCH / PUCCH / PRACH transmissions). In this case, the effective time window of the regulated time domain resources of the UL subband, as scheduled by the DCI, may be one of the following: the regulated time domain resources of the UL subband by the DCI scheduling the UL transmission are valid only for the current UL transmission scheduling; or the regulated time domain resources of the UL subband by the DCI scheduling the UL transmission are valid until the next time the time domain resources of the UL subband are regulated by another DCI scheduling the UL transmission; or the regulated time domain resources of the UL subband are valid for a subsequent predefined or configured period once the regulation is indicated within the DCI scheduling the current UL transmission. For this purpose, the time-domain resources of the UL subband are adjusted between the various arbitrary time windows described above, and therefore all symbols scheduled for UL transmission become part of the UL subband adjusted between the valid time windows. 【0075】 (2) This may also be used to indicate that scheduled uplink transmissions (e.g., PUSCH / PUCCH / PRACH transmissions) should be transmitted according to symbols configured / indicated / scheduled for uplink transmissions within DCI, even if the symbols thus scheduled for uplink transmissions (e.g., PUSCH / PUCCH / PRACH transmissions) exceed the time domain resources of the UL subband. For this purpose, the time domain resources of the UL subband are not adjusted, but some of the symbols scheduled for UL transmissions may be outside the UL subband in the time domain. 【0076】 In some exemplary implementations, the DCI associated with a PUSCH transmission may correspond to a DCI format used to schedule PUSCH transmissions. A DCI associated with a PRACH transmission may correspond to a DCI format used to trigger PRACH transmissions. Similarly, a DCI associated with a PUCCH transmission may correspond to a DCI format that schedules PDSCH transmissions, or a DCI that does not schedule PDSCH transmissions. In some exemplary implementations, a dedicated or special DCI format for DCI may be configured by the base station to schedule / indicate UL transmissions within the UL subband. Alternatively, a dedicated or special CORESET / PDCCH monitoring opportunity (MO) for DCI may be configured by the base station to schedule / indicate UL transmissions within the UL subband. 【0077】 Therefore, this method does not require a new / dedicated DCI or DCI format to modify the UL subband, but reuses the DCI format and framework to schedule UL transmissions, which is done solely by adding the above parameters or a number of parameters to the DCI. If a base station wishes to adjust the time-domain resources of the UL subband, the base station may set the value of a parameter for a certain state A as, for example, an indicator or flag, to indicate that the UL subband should be modified. For example, the base station sets the value of a parameter in the DCI for a certain state A, schedules a UL transmission (e.g., a PUSCH / PUCCH / PRACH transmission) through the DCI, and then the symbols configured / indicated / scheduled in the DCI for the UL transmission are automatically configured for the UL subband and for the UL transmission. In such a manner, the time-domain resources of the UL subband are dynamically adjusted / expanded while scheduling UL transmissions so that a dynamic balance between UL resources and DL resources can be achieved. If the uplink transmission is PUSCH, PUSCH may include both "with UL SCH" and "without UL SCH". 【0078】 The above parameters may be implemented in various forms and may include more additional items. For example, a set of parameters may be used to represent the number and location of UL symbol adjustments / extensions. These parameters may be included within the DCI. In some other implementations, the DCI may only need to include an indicator to show whether adjustments / extensions exist for UL subbands. Parameters that define the actual form in which adjustments / extensions should be made may be included within the DCI scheduling, or alternatively, pre-configured / pre-defined, or semi-statically configured, for example, via RRC signaling or MAC CE signaling. Such pre-configured / pre-defined or semi-statically configured parameters indicating the adjustment / extension form may be in an effective state when an indicator in the DCI exists or is activated, or otherwise ineffective. Different choices may exist, represented by different sets of pre-configured / pre-defined or semi-statically configured parameters in the form of adjustments / extensions. These sets of parameters may be identified via an index. The indicators within DCI may, in addition, specify a particular set of parameters, pre-configured / predefined or semi-statically configured, which, for example, use an index to indicate the mode of symbol adjustment / expansion within the time domain of the UL subband. 【0079】 In some implementations, parameters can be configured for the UE by higher-layer signaling (such as RRC signaling or MAC CE signaling). Once RRC configures the parameters to be present for the UE, the parameters can then be included within the DCI for dynamic scheduling of UL transmissions outside the UL subband. Otherwise, the parameters do not need to be included within the DCI for dynamic scheduling. 【0080】 In some other implementations, the above parameters or indicators may not need to be included in or reconfigured within the DCI. Instead, the UE and base station may follow predefined and agreed rules for the dynamic scheduling of UL transmissions through the DCI. For example, the predefined and agreed rules serve one of two purposes corresponding to the above parameters. For example, with respect to a UE supporting SBFD, the DCI from the base station may schedule UL transmissions (e.g., PUSCH / PUCCH / PRACH transmissions) within the UL subband, and the scheduled time domain resources configured / indicated for UL transmissions may exceed (or otherwise be outside) the time domain resources of the UL subband, and the UE should then perform the UL transmissions within the configured / indicated resources, including time resources outside the time domain range of the UL subband, but the frequency domain resources for the scheduled UL transmissions are still within the frequency domain resource range of the UL subband. Thus, when a base station needs to schedule UL transmissions for SBFD UEs through DCI, the time domain resources for the UL transmission may be configured or indicated to exceed the time domain resources of the UL subband, and the UL transmission will be carried out while configured / indicated within the time domain resources. 【0081】 An example of dynamic time-domain extension of a semi-statically configured UL subband is illustrated in Figure 6-9. Again in Figure 6-9, the horizontal axis represents time slots in units of OFDM symbols, while the vertical axis represents frequency resources in RB. In Figure 6, for example, the UL subband starts at symbol #2 and ends at symbol #8. UL transmissions may be scheduled by the base station via DCI with respect to all or part of the frequency resources and with respect to regulated time-domain resources beyond the UL subband (for example, the base station may schedule PUSCH / PUCCH / PRACH within the UL subband through a scheduling DCI within PDCCH). In the embodiment of Figure 6, several additional symbols outside the UL subband (for example, symbols #9 and #10 outside the UL subband, in addition to symbols #2-#8 within the UL subband) may be scheduled by DCI for UL transmissions. Specifically, the base station may schedule PUSCH / PUCCH / PRACH transmissions to occupy symbols #2-#10. The time domain location of the UL transmission, as shown in Figure 6, which involves time adjustment, may be defined within the scheduling DCI. 【0082】 The DCI may include the above parameter (alternatively referred to as an indicator or flat) with a value A for signaling the UE to perform UL transmission within the scheduled time domain resource symbol #2–symbol #10. To prevent the UE from performing UL transmission extensions outside the UL subband under such scheduling, the DCI will set the parameter value to B instead of A. When the parameter is set to value A, this may further indicate a modification of the UL subband, such as including resources provided by the DCI outside the semi-statically configured UL subband within a valid time window, as described above. In other words, when the above scheduling DCI includes a parameter with a value B, the UE will perform UL transmission only within the scheduled time domain resource symbol #2–symbol #8, and not within symbol #9–symbol #10. 【0083】 To illustrate the above exemplary implementation in a different form, note that in Figure 6, in one DL slot, one UL subband is configured within the time domain to occupy a total of seven consecutive symbols from symbol #2 to symbol #8. The base station schedules exemplary PUSCH / PUCCH / PRACH within the UL subband through DCI in PDCCH. PUSCH / PUCCH / PRACH may be indicated by DCI to occupy time domain resources from symbol #2 to symbol #10. Symbols #9 and #10, on the other hand, are not configured for the UL subband (where symbols #9 and #10 are originally configured as DL symbols, but can also be UL symbols or flexible symbols). If the base station sets a parameter value in DCI to indicate that the time domain resources of the UL subband are adjusted to include symbols configured / indicated for PUSCH / PUCCH / PRACH in DCI, then it would be as follows: Therefore, the UE should consider that symbols #9 and #10 are dynamically configured for the UL subband to transmit PUSCH / PUCCH / PRACH. That is, the UL subband is dynamically adjusted to contain symbols #2-#10 over a valid time window, as described above. Thus, the UE transmits PUSCH / PUCCH / PRACH within symbols #2-#10 of the UL subband. Alternatively, if the base station sets a parameter value in the DCI to indicate that PUSCH / PUCCH / PRACH is transmitted according to the symbols configured / indicated for PUSCH / PUCCH / PRACH in the DCI, then the following occurs: Thus, the UE transmits PUSCH / PUCCH / PRACH within symbols #2-#10 of the UL subband, but symbols #9 and #10 are not originally configured for the UL subband. 【0084】 The embodiments illustrated in Figures 7-9 are similar to those in Figure 6, with the differences that (1) in Figure 7, additional symbols that can be scheduled outside the UL subband by DCI may be pre-configured UL symbols; (2) in Figure 8, additional symbols that can be scheduled outside the UL subband by DCI may be pre-configured F (flexible) symbols; and (3) in Figure 9, the UL subband is configured within F symbols (e.g., by RRC), and additional symbols that can be scheduled outside the UL subband by DCI may be pre-configured UL symbols. The underlying principles for scheduling UL transmissions apply to these situations. 【0085】 To better support the dynamic UL subband adjustment described above, a corresponding UE capability may be introduced. In other words, a UE may or may not support dynamic UL subband adjustment for UL transmission. The UE may therefore report such capability or lack thereof to the base station. If the UE reports to the base station that such capability is supported in the UE, the base station may dynamically schedule / configure the UE to perform UE transmissions outside the symbol of the UL subband in the manner illustrated above. Otherwise, the base station would prohibit the dynamic scheduling / configuration of the UE to perform these UL transmission operations. For example, if the UE does not report capability or does not explicitly report lack of capability, the base station would avoid scheduling PUSCH / PUCCH / PRACH that exceed the time domain range of the UL subband. 【0086】 In some exemplary implementations, as may already be suggested above, the dynamic UL transmission scheduling and operation described above may be limited to the frequency domain of the UL subband. For example, in the embodiment described above in Figure 6-9, with respect to the dynamically tuned symbols #9 and #10 for UL transmission, only resources within the frequency domain of the UL subband may be dynamically scheduled as frequency resources for UL transmission. Thus, the subband filter design and frequency locking may not require modification, among other advantages. 【0087】 In some exemplary implementations, several additional scheduling or configuration restrictions may be predefined and adopted to avoid / reduce interference of DL transmissions with UL transmissions. For example, in Figure 6, with respect to symbols outside the time-domain resources of the UL subband that are dynamically scheduled for UL PUSCH / PUCCH / PRACH transmissions, the base station may not allow scheduling of DL transmissions within the frequency domain of the UL subband. In other words, DL transmissions may be prohibited from being scheduled for symbols #9 and #10 within the frequency resource range of the UL subband in Figure 6. Dynamic scheduling of DL transmissions within UL subband resources 【0088】 In some other situations, at a given time, a UL subband, such as one configured via RRC, may not be fully utilized for UL transmission, and DL traffic may become excessively congested. In such cases, dynamic scheduling may be implemented to use the UL subband for DL ​​transmission. Thus, in some exemplary implementations, methods are provided for scheduling DL transmission within the resources of the UL subband, so that the resources of the UL subband can be used for DL ​​transmission in a dynamic manner. The underlying principles for dynamically scheduling UL transmission in the various implementations described above, related to Figure 6-9, apply to such dynamic DL transmission scheduling. 【0089】 For example, if a UE is configured with a UL subband via RRC signaling, the UE should be scheduled by DCI within the PDCCH to perform DL reception (i.e., DL transmission by the base station) within resource A, and resource A overlaps with a resource in the UL subband within the time domain, then the UE should perform DL reception from resource A. 【0090】 In this case, the base station can ensure that UE's UL transmission within the UL subband and DL reception using UL subband resources do not overlap in the time domain. In this way, UL subband resources are dynamically used for DL ​​reception (DL transmission by the base station), thereby enabling flexible and dynamic use of UL subband resources. 【0091】 In another embodiment, if the UE is configured with a UL subband by RRC signaling, the base station may schedule UL transmissions to occupy some symbols within the UL subband, and if the UL subband still has some idle symbols, the base station may schedule DL transmissions within the idle symbols, as shown in Figure 10. For example, as shown in Figure 10, the PDSCH for DL ​​transmission (by the base station) and the corresponding DL reception by the UE are scheduled to use symbols that are not used for UL transmission within the UL subband, in addition to symbols that are outside the UL subband (for example, resource A is partially within the UL subband in the time domain and partially outside the UL subband, as shown in Figure 10). With respect to the partial symbols of the UL subband used for PDSCH transmission, a parameter may also be introduced in the DCI of the PDCCH that schedules the PDSCH, and the value of the parameter may be used to inform the UE whether to receive or not receive the PDSCH in the UL subband. Alternatively, the base station may use the value of this parameter to inform the UE to ignore PDSCH transmissions within the UL subband time resource. In other words, the UE may consider some PDSCH transmissions located within the UL subband as not being transmitted. 【0092】 With respect to Figure 6-9, the implementation of parameters or indicators for performing dynamic DCI scheduling as described above is applied here to the scheduling of DL transmission / reception within the UL subband. Similarly, with respect to Figure 6-9, and with respect to such dynamic scheduling, UE capability reporting, and the UE's capability to support the operation by the UE and base station based on such reporting, the implementation described above can here be applied to the dynamic scheduling of DL transmission / reception within the UL subband. 【0093】 Simply put, as an example, parameters related to dynamic scheduling can be configured for the UE by higher-layer signaling (such as RRC signaling or MAC CE signaling). Once RRC configures the parameters to be present for the UE, the parameters can be included within DCI to schedule DL transmissions that overlap with the UL subband and time; otherwise, the parameters are not included within DCI scheduling. 【0094】 Simply put, as another embodiment, a corresponding UE capability may be introduced to better support dynamic scheduling of DL transmission / reception within UL subband time resources. If the UE reports to the base station that the capability is supported, i.e., that the UE is capable of performing the DL reception described above, the base station may schedule / configure the UE to perform dynamic DL reception operations partially within UL subband time resources. Otherwise, the base station will prohibit the UE from scheduling / configuring the UE to perform such operations. For example, if the UE does not report capability or does not report lack of capability, the base station will prohibit scheduling a PDSCH to use UL subband resources. 【0095】 To avoid interference between UL transmission and DL transmission, the following restrictions may be optionally adopted: for example, in Figure 5, one PDSCH is scheduled within the UL subband resources within symbols #9 and #10, and then UL transmission is prohibited with respect to the remaining frequency domain resources within symbols #9 and #10 of the UL subband. In other words, DL reception and UL transmission cannot be scheduled simultaneously within a single UL subband resource, even if the DL reception and UL transmission are for different UEs. 【0096】 Similar to the exemplary implementation described above and associated with Figure 6-9, several scheduling restrictions may be adopted to avoid / reduce DL transmission interference with UL transmission. For example, in Figure 10, one PDSCH within symbols #9 and #10 is scheduled within the UL subband resources, and then UL transmission may be prohibited (to reduce DL and UL interference with the UL subband within the frequency) with respect to the remaining frequency domain resources within symbols #9 and #10 in the UL subband. That is, within a single UL subband resource, DL reception and UL transmission do not have to be scheduled simultaneously, even if DL reception and UL transmission are for different UEs, respectively. UL subband configuration 【0097】 In some implementations, in addition to generally configuring time-frequency resources in the UL subband for the UE (e.g., some OFDM symbols in the time domain and some consecutive RBs in the frequency domain for the UL subband), the base station may also configure some flexible resources within the resource range of the UL subband, either in the time domain or the frequency domain, or in both the time and frequency domains. Here, "flexible resource" is merely a designation. It is a resource located within the UL subband, and it is flexible and special in that this resource is enabled for DL ​​transmission when needed, even though it is part of the UL subband (obviously, it can also be used for UL transmission because it belongs to the UL subband). For example, within the time domain, some OFDM symbols within the resource range of the UL subband may be configured to be flexible resources. In another embodiment, within the frequency domain, some RBs within the UL subband may be configured to be flexible resources. Within the time-frequency resource range of the UL subband, the transmission direction of the flexible resource can then be determined based on the transmission direction configured or scheduled by the base station. 【0098】 The above approach is analogous to the structure of flexible symbols within a time slot structure. Configuration by the base station may be semi-static or dynamic. When these flexible resources within the UL subband are dynamically configured by the base station, it can facilitate the balancing of resources for real-time DL and UL transmissions. 【0099】 An exemplary slot structure, configured based on the UL subband configuration described above, is shown in Figure 11 in the context of an originally configured DL slot having a semi-statically configured UL subband. All symbols are originally configured as DL symbols. Figure 11 shows an exemplary new slot structure with an SBFD UE UL subband, configured with flexible resources according to the implementation described above. In Figure 11, the 3rd to 14th DL symbols are configured for the UL subband relating to the SBFD UE in the time domain, and several consecutive RBs are configured for the UL subband in the frequency domain. The base station may further configure the 11th to 14th symbols as flexible resources for the UL subband within the time domain resources within the UL subband and across the entire frequency resource range of the UL subband. Thus, in the time-frequency domain of the UL subband, these flexible resources can be used across these flexible resources according to the direction of transmission scheduled / configured by the base station. Base stations and UEs can therefore be scheduled to use flexible resources within the UL subband to perform DL reception (by the UE) or UL transmission (from the UE) within the new slot structure. 【0100】 Figures 12 and 13 illustrate other exemplary slot structures in which the UL subband is configured by the base station with flexible resources within the UL subband. The embodiments in Figures 12 and 13 are similar to those in Figure 11, except that the illustrated slots are originally configured as flexible slots (with all flexible symbols) and mixed slots with mixed DL symbols and flexible symbols. The number of flexible symbols within the UL subband may be configured according to the requirements for all of Figures 11-13. Furthermore, if the flexible symbols and UL symbols within the UL subband need to be interlaced for all of Figures 11-13, the slot structure may be configured in such a way by the base station. 【0101】 In the embodiment illustrated in Figure 14, the flexible resources within the UL subband are configured in the frequency domain, not the time domain. In other words, some RBs in the UL subband may be configured as flexible RBs. As specifically shown in Figure 14, the base station may configure a new slot structure. In Figure 14, the slot is originally configured as a DL slot containing all DL symbols. The 3rd to 14th DL symbols are configured for the UL subband with respect to the SBFD UE in the time domain, and some consecutive RBs are configured for the UL subband in the frequency domain. The base station may then further configure some RBs as flexible resources for the UL subband within the frequency domain resources of the UL subband and across all symbols of the UL subband in the time domain. Thus, in the time-frequency domain of the UL subband, these flexible resources can be used according to the direction of transmission, which is scheduled / configured by the base station within the flexible resources. The base station and UE may perform DL or UL transmission within the flexible resources in the UL subband of the new slot structure. 【0102】 Figures 15 and 16 illustrate other exemplary slot structures in which the UL subband is configured by the base station with flexible frequency resources within the UL subband. The embodiments in Figures 12 and 13 are similar to those in Figure 14, except that the illustrated slots are originally configured as flexible slots (with all flexible symbols) and mixed slots with mixed DL symbols and flexible symbols. The number of flexible RB resources within the UL subband may be configured according to the requirements for all of Figures 14-16. Furthermore, for all of Figures 14-16, if the flexible bands of the RBs within the UL subband and the UL symbols within the UL subband need to be interlaced, the slot structure may be configured in such a way by the base station. 【0103】 Exemplary configuration implementations are further described below, including those carried out by a base station and a UE. The base station may configure the UL subband for the UE based on RRC signaling. The base station may also, as described above, simultaneously or subsequently, configure the UL subband flexible resources for the UE within the UL subband time-frequency resources based, for example, RRC signaling, MAC CE signaling, DCI signaling, and equivalents. The base station may schedule / configure UL reception or DL ​​transmission over the transmission flexible resources within the UL subband with respect to the UE with the corresponding capabilities. 【0104】 From the UE side, the UE receives RRC signaling from the base station to configure the UL subband and acquires the UL subband. Simultaneously, or subsequently, the UE receives signaling from the base station to configure flexible resources within the UL subband and acquires the UL subband with the flexible resources. The UE then receives scheduling / configuration signaling from the base station and may perform UL transmission or DL ​​reception within the UL subband over the flexible resources. 【0105】 In some further implementations, the underlying principles of Figure 6-10 can be applied and combined with flexible resources for scheduling UL transmission or DL ​​reception within the UL subband, and adaptive modifications are sufficient, for example, in terms of DCI design, UL transmission, and DL reception. 【0106】 Furthermore, to simplify UE design and support UL subbands with flexible resources, corresponding UE capabilities are also introduced. If a UE reports this capability, the base station may configure a UL subband with flexible resources for the UE, enabling scheduling of UL transmissions or DL ​​receptions within the UL subband. Otherwise, if the UE does not report this capability or does not explicitly report the lack of capability, the base station will be prohibited from configuring a UL subband with flexible resources for the UE. Embodiment 4 【0107】 Enabling DL reception within the UL subband can facilitate the dynamic balancing of DL and UL resources. However, if DL reception is enabled within the UL subband, such DL reception may also overlap in the time domain with other possible UL transmissions within the UL subband. Even if such DL reception and UL transmission may be on different RBs, they may need to be avoided to avoid complicating the air interface design. In addition, some DL reception may be scheduled or configured outside the UL subband, potentially overlapping in time with DL reception or UL transmissions within the UL subband. This may need to be avoided for the same reasons as above. Therefore, several predefined options and rules may need to be specified to avoid these overlapping transmissions / receptions and to select transmission or reception when conflicts arise. 【0108】 In general, UL transmissions as described herein include, but are not limited to, semi-statically configured PUSCH / PUCCH and dynamically scheduled PUSCH / PUCCH. Similarly, DL receptions as described herein include, but are not limited to, semi-statically configured SPS PDSCH / CSI-RS / DL PRS and dynamically scheduled PDSCH / CSI-RS / DL PRS. Option 1: Prioritizing UL subband 【0109】 In some exemplary implementations, the base station may configure priorities or priority levels with respect to the UL subband of the UE. The conflicts described above may then be resolved according to the various priorities. 【0110】 For example, with respect to DL reception, if its priority is higher than that of UL subband reception, the base station may allow DL reception to be scheduled or configured within the UL subband. Otherwise, DL reception may be prohibited from being scheduled or configured within the UL subband. 【0111】 Similarly, under such rules, if predefined, a UE would not expect a DL reception to be scheduled or configured within the UL subband if the DL reception priority is lower than or equal to the UL subband priority. In such a situation, the UE would not receive / process the DL reception. Also, under such rules, if a DL reception is scheduled or configured within the UL subband, the base station should ensure that such DL reception has a higher priority than those in the UL subband. 【0112】 In some exemplary implementations, the priority of a UL subband, as configured by the base station described above, may not be considered valid for UL transmission. In other words, UL transmission can always be scheduled or configured within the UL subband, even if the priority of the UL transmission differs from the priority of the UL subband. The base station may ignore the UL subband priority when scheduling / configuring UL transmission within the UL subband. 【0113】 In some further exemplary implementations, in the UL subband, if DL reception and UL transmission overlap within the time domain, the higher-priority channel / signal may survive and be transmitted, while the lower-priority channel / signal is discarded for transmission / reception. Within the UL subband, the UE would not expect DL reception and UL transmission of the same priority to overlap within the time domain. Therefore, the base station should ensure during the scheduling process that DL reception and UL transmission of the same priority within the UL subband do not overlap within the time domain. Option 2 - Absolute priority and same priority solutions 【0114】 In some exemplary implementations, the base station and UE may agree on pre-established rules that if time domains overlap between DL receptions of the same priority, between DL receptions and UL transmissions of the same priority, or between UL transmissions of the same priority, DL receptions or UL transmissions within the UL subband are allowed to survive, while DL receptions or UL transmissions outside the UL subband are discarded. 【0115】 Within the UL subband, the UE would therefore not expect DL reception and UL transmission of the same priority to overlap within the time domain. Accordingly, the base station should ensure that DL reception and UL transmission of the same priority within the UL subband do not overlap within the time domain. 【0116】 In some other exemplary implementations, DL reception and UL transmission with the same priority within the UL subband overlap in the time domain, and the base station and UE may agree that UL transmission should always persist while DL reception is discarded, for the reason that UL transmission should be preferentially transmitted within the UL subband. 【0117】 If channels / signals with different priorities (DL reception / UL transmission) overlap within the time domain, regardless of whether they are within the UL subband, the higher-priority channel / signal may survive and be transmitted, while the lower-priority channel / signal transmission is abandoned. Option 3 - Absence of time overlap, made possible between DG PDSCH and DG PUSCH / PUCCH within the UL subband. 【0118】 In some exemplary implementations, within the UL subband, if dynamic PDSCH (DL transmission) scheduled by PDCCH (indicated as DG PDSCH) and dynamic PUSCH / PUCCH (UL transmission) scheduled by PDCCH (indicated as DG PUSCH / PUCCH) overlap in the time domain, the following rules may be predefined and considered: 【0119】 For example, if a DG PDSCH is to be transmitted within the UL subband, the base station and UE may agree to follow predefined rules to ensure that the base station does not, at all times, have overlapping DG PDSCHs and DG PUSCH / PUCCHs within the UL subband in a time domain. Otherwise, if a DG PDSCH or DG PUSCH / PUCCH is scheduled within a time domain resource within the UL subband, the DG PUSCH / PUCCH or DG PDSCH cannot be scheduled within that time domain resource in a way that avoids their time domain overlap. From the UE's perspective, the UE would not expect one DG PDSCH and one DG PUSCH / PUCCH to overlap within a time domain within the UL subband. If they do overlap within a time domain, the UE will not process them and will consider the situation as a base station scheduling error. Option 4 - DG PDSCH and DG PUSCH / PUCCH in the UL subband: Time-based scheduling 【0120】 In some exemplary implementations, in the UL subband, if DG PDSCH scheduled by PDCCH and DG PUSCH / PUCCH scheduled by PDCCH overlap within the time domain and have the same priority, one of the following rules may be predefined and implemented: Rule 1 【0121】 If a DG PDSCH is scheduled by PDCCH1 and a DG PUSCH / PUCCH is scheduled by PDCCH2, and the DG PDSCH and DG PUSCH / PUCCH overlap within the UL subband in the time domain, then the DG PDSCH or DG PUSCH / PUCCH corresponding to the PDCCH with a later start (or end) symbol between PDCCH1 and PDCCH2 will persist in terms of transmission, while the DG PDSCH or DG PUSCH / PUCCH corresponding to the PDCCH with an earlier start (or end) symbol will be discarded. 【0122】 For example, if the start (or end) symbol of PDCCH1 is later than the start (or end) symbol of PDCCH2, DG PDSCH will survive and DG PUSCH / PUCCH will be discarded. If the start (or end) symbol of PDCCH2 is later than the start (or end) symbol of PDCCH1, DG PUSCH / PUCCH will survive and DG PDSCH will be discarded. Rule 2 【0123】 Contrary to Rule 1 above, if a DG PDSCH is scheduled by PDCCH1 and a DG PUSCH / PUCCH is scheduled by PDCCH2, and the DG PDSCH and DG PUSCH / PUCCH overlap within the UL subband in the time domain, then the DG PDSCH or DG PUSCH / PUCCH corresponding to the PDCCH with the earlier start (or end) symbol between PDCCH1 and PDCCH2 is retained, and the DG PDSCH or DG PUSCH / PUCCH corresponding to the PDCCH with the later (or end) symbol is discarded. 【0124】 For example, if the start (or end) symbol of PDCCH1 is earlier than the start (or end) symbol of PDCCH2, DG PDSCH will persist for transmission and DG PUSCH / PUCCH will be discarded. If the start (or end) symbol of PDCCH2 is earlier than the start (or end) symbol of PDCCH1, DG PUSCH / PUCCH will persist for transmission and DG PDSCH will be discarded. Rule 3 【0125】 If DG PDSCH is scheduled by PDCCH1 and DG PUSCH / PUCCH is scheduled by PDCCH2, and DG PDSCH and DG PUSCH / PUCCH overlap within the UL subband in the time domain, and one of them has multiple repeated transmissions, then the channel with repeated transmissions will survive with respect to transmission, and the channel without repeated transmissions will be discarded. 【0126】 For example, if DG PDSCH is scheduled with repeated transmissions and DG PUSCH / PUCCH is scheduled without repeated transmissions, DG PDSCH will persist while DG PUSCH / PUCCH will be discarded. In another embodiment, if DG PDSCH is scheduled without repeated transmissions and DG PUSCH / PUCCH is scheduled with repeated transmissions, DG PUSCH / PUCCH will persist while DG PDSCH will be discarded. Rule 4 【0127】 If DG PDSCH is scheduled by PDCCH1 and DG PUSCH / PUCCH is scheduled by PDCCH2, and DG PDSCH and DG PUSCH / PUCCH overlap within the UL subband in the time domain, and both have multiple repeated transmissions, then Rule 1 or Rule 2 above may be used to determine which of them should survive and which should be discarded. Option 5 - DG PDSCH and CG PUSCH / PUCCH within the UL subband: Scheduling based on time or assumed priority. 【0128】 In some exemplary implementations, within the UL subband, if DG PDSCH and semi-static / configured grant PUSCH / PUCCH (indicated as CG PUSCH / PUCCH) scheduled by PDCCH overlap in the time domain and have the same priority, one of the following rules may be predefined and considered: Rule 5 【0129】 If there is a duration of at least T between the termination point of the PDCCH termination symbol corresponding to DG PDSCH and the start point of the CG PUSCH / PUCCH start symbol, then DG PDSCH is continued and transmitted, while CG PUSCH / PUCCH is discarded. Otherwise, CG PUSCH / PUCCH is continued and transmitted, and DG PDSCH is discarded. Here, the start of the duration T is from the termination point of the PDCCH termination symbol. 【0130】 Here, the duration of T may be defined as follows: T may be defined based on N1 in the existing protocol TS38.213, or based on N2 in the existing protocol TS38.213, or may be defined as 14 symbols. Rule 6 【0131】 In some implementations, CG PUSCH / PUCCH signals are always present and transmitted, while DG PDSCH signals are discarded. In other words, when they overlap within the UL subband in the time domain, higher priority may be given to UL transmission. Option 6 - SPS PDSCH and DG PUSCH / PUCCH within the UL subband: Scheduling based on time or assumed priority. 【0132】 In some exemplary implementations, within the UL subband, if semi-static PDSCHs (indicated as SPS PDSCH) and dynamic PUSCH / PUCCHs (indicated as DG PUSCH / PUCCH) scheduled by PDCCHs overlap in the time domain and have the same priority, one of the following rules may be predefined and considered: Rule 7 【0133】 If there is at least a duration of Q between the end point of the PDCCH ending symbol corresponding to DG PUSCH / PUCCH and the start point of the SPS PDSCH starting symbol, then DG PUSCH / PUCCH is continued and transmitted while SPS PDSCH is discarded; otherwise, SPS PDSCH is continued and transmitted, and DG PUSCH / PUCCH is discarded. Here, the start of the duration of Q is from the end point of the PDCCH ending symbol. 【0134】 Here, the duration of Q may be defined as follows: Q may be defined based on N1 in the existing protocol TS38.213, or based on N2 in the existing protocol TS38.213, or may be defined as 14 symbols. Rule 8 【0135】 In some exemplary implementations, DG PUSCH / PUCCH is always present and transmitted, while SPS PDSCH is discarded. Due to their time domain overlap within the UL subband, UL transmission may be given higher priority. In other words, if the resources of DG PUSCH / PUCCH and SPS PDSCH scheduled / configured by the base station for an SBFD UE overlap within the time domain of the UL subband, the base station will assume that the UE transmits DG PUSCH / PUCCH, and therefore the base station will not transmit SPS PDSCH. The UE finds that the resources of DG PUSCH / PUCCH and SPS PDSCH overlap within the time domain of the UL subband, and therefore the UE transmits DG PUSCH / PUCCH, and the UE does not receive SPS PDSCH under this rule. Option 7 - SPS PDSCH and CG PUSCH / PUCCH within the UL subband 【0136】 In some exemplary implementations, within the UL subband, if SPS PDSCH and CG PUSCH / PUCCH overlap in the time domain and have the same priority, one of the following rules may be predefined and considered: Rule 9 【0137】 Under this exemplary rule, CG PUSCH / PUCCH is always present and transmitted, while SPS PDSCH is discarded. Since their time domain overlap is within the UL subband, UL transmission may be given higher priority. In other words, if the resources of CG PUSCH / PUCCH and SPS PDSCH configured by the base station with respect to an SBFD UE overlap within the time domain of the UL subband, the base station may, under this rule, assume that the UE is transmitting CG PUSCH / PUCCH, and therefore the base station does not transmit SPS PDSCH. The UE may find that the resources of CG PUSCH / PUCCH and SPS PDSCH overlap within the time domain of the UL subband under this exemplary rule, and then the UE transmits CG PUSCH / PUCCH and the UE does not receive SPS PDSCH. Rule 10 【0138】 The UE does not expect CG PUSCH / PUCCH and SPS PDSCH to overlap within the time domain of the UL subband. That is, the base station configures CG PUSCH / PUCCH and SPS PDSCH with respect to the SBFD UE, and the base station should ensure that the resources of CG PUSCH / PUCCH and SPS PDSCH within the UL subband do not overlap within the time domain. Under this rule, if the UE finds that the resources of CG PUSCH / PUCCH and SPS PDSCH within the UL subband overlap within the time domain, the UE will not perform any reception or transmission. Transmission of DL reference signals within the UL subband 【0139】 In some exemplary implementations, downlink reference signals, such as those used in general DL transmissions, may be made available for transmission within the resources of the UL subband. The downlink reference signals here include, but are not limited to, reference signals for channel measurement (e.g., a semi-static CSI-RS (Channel State Information Reference Signal) or CSI-RS triggered based on PDCCH) or reference signals for positioning (e.g., DL PRS). If the reference signals are configured to use resources in the UL subband for transmission (e.g., symbols within the UL subband), the UE and base station may consider one of the following implementations, where the UL subband resources used to transmit the reference signals are denoted as "resource B". 1) When the reference signal is an SBFD-compatible UE: In some exemplary implementations, the reference signal is always transmitted over resource B. If the SBFD UE's UL transmission is scheduled / configured to include resource B, the SBFD UE should be instructed to perform rate matching with respect to resource B. In other words, the UL transmission is punctured over resource B, i.e., the UL transmission skips resource B. Specifically, the UE uses a UL subband resource other than resource B for the UL transmission. In some alternative exemplary implementations, if no UL transmission of any SBFD UE is scheduled / configured to include resource B, the reference signal is transmitted within resource B. Otherwise, the base station does not transmit the reference signal within resource B. The base station should indicate, by signaling to the UE, whether the reference signal is transmitted over resource B for the SBFD UE. In some other alternative exemplary implementations, the base station explicitly signals to the UE whether resource B is to be used for reference signaling or UL transmission. The UE, in turn, determines whether resource B is to be used for reference signaling or whether resource B is to be used for UL transmission according to the base station's signaling. The signaling may be RRC signaling / MAC CE, or the signaling may be DCI signaling (for example, in DCI for scheduling UL transmission). In some other alternative implementations, when the UE requests a reference signal, the UE may simultaneously inform the base station whether the reference signal should be transmitted within resource B. For example, when the UE needs to request a reference signal, the UE sends a request signaling to the base station and, at the same time, (if resource B is known) informs the base station within the request signaling that resource B should be used for UL transmission or that resource B should be used for receiving the reference signal. In some other alternative implementations, if a DL PDSCH reception of an SBFD UE is scheduled / configured within resource C, and resource C contains resource B, and it is determined that the DL PDSCH reception is received from the UE (i.e., the base station determines that the DL PDSCH reception is transmitted within source B), the UE assumes that the reference signal is transmitted within resource B, but the DL PDSCH reception is transmitted within resource C except for resource B (skipping resource B). 2) When the reference signal is for a conventional UE (i.e., a UE without SBFD capability): In some implementations, the reference signal is always transmitted over resource B. Therefore, conventional UEs will receive the reference signal. SBFD-enabled UEs will perform rate matching over resource B if the SBFD UE's UL transmission is scheduled / configured to include resource B. SBFD UEs will always perform rate matching over resource B, or they will be signaled whether they will perform rate matching over resource B. Resolution of duplicate NACKs with different priorities within the time domain. 【0140】 In some embodiments, the network may configure priorities for physical channels with respect to the UE. If a first physical channel with a higher priority overlaps with a second physical channel with a lower priority in the time domain, the first physical channel may cancel the second physical channel. This implies that the UE may drop (i.e., cancel) the transmission of the second physical channel and transmit only the first physical channel. Alternatively, the UE may drop information about the second physical channel or may not multiplex information about the second physical channel within the first physical channel. 【0141】 The network may configure a NACK-only feedback mode for the UE. The configured NACK-only feedback mode may be applied for the physical downlink shared channel (PDSCH). With respect to the PDSCH, the network may configure or indicate a NACK-only physical uplink control channel (PUCCH). When the UE accurately decodes the PDSCH, the UE does not need to transmit the NACK-only PUCCH. When the UE does not accurately decode the PDSCH, the UE may transmit the NACK-only PUCCH. 【0142】 A first NACK-only PUCCH may correspond to a first group of PDSCHs. The first group of PDSCHs may contain one or more PDSCHs. A first NACK-only PUCCH with a higher priority overlaps with a second physical channel with a lower priority in the time domain. In some embodiments, a first NACK-only PUCCH with a higher priority may cancel a second physical channel with a lower priority. This implies that the UE may drop (i.e., cancel) the transmission of the second physical channel regardless of the decoding result of the first group of PDSCHs. More specifically, the UE may drop (i.e., cancel) the second physical channel even if the UE accurately decodes the first group of PDSCHs. When the UE accurately decodes the first group of PDSCHs, the UE does not have to transmit the first NACK-only PUCCH, or the UE does not transmit anything. The UE may determine the PUCCH resource based solely on the decoding result of the first group of PDSCHs. 【0143】 In some embodiments, a first NACK-only PUCCH with higher priority does not have to cancel a second physical channel with lower priority. Furthermore, a first NACK-only PUCCH with higher priority does not have to cancel a second physical channel with lower priority when the UE accurately decodes the first group of PDSCHs. This implies that the UE may transmit the second physical channel when the UE accurately decodes the first group of PDSCHs. 【0144】 A second NACK-only PUCCH may correspond to a second group of PDSCHs. The second group of PDSCHs may contain one or more PDSCHs. A first NACK-only PUCCH with a higher priority may overlap with a second NACK-only PUCCH with a lower priority in the time domain. A first NACK-only PUCCH with a higher priority may not cancel out a second NACK-only PUCCH with a lower priority. The UE may determine the PUCCH resource according to the decoding results of both the first group of PDSCHs and the second group of PDSCHs. 【0145】 Furthermore, a first NACK-only PUCCH with higher priority does not need to cancel a second NACK-only PUCCH with lower priority if the UE accurately decodes the first group of PDSCH. The UE may transmit the first NACK-only PUCCH if it does not decode at least one of the first groups of PDSCH. The UE may transmit the second NACK-only PUCCH if it accurately decodes the first group of PDSCH but does not decode at least one of the second groups of PDSCH. The UE does not need to transmit the first NACK-only PUCCH or the second NACK-only PUCCH if it accurately decodes the first group of PDSCH and accurately decodes the second group of PDSCH. 【0146】 Depending on the embodiment, the UE can avoid unnecessary drops or cancellations, and therefore, spectral efficiency can be improved. 【0147】 The above description and accompanying drawings provide specific exemplary embodiments and implementations. However, the subject matter described may be embodied in a variety of different forms, and therefore, the subject matter covered or claimed is intended to be construed as not being limited to any exemplary embodiments described herein. A reasonably broad scope for the claimed or covered subject matter is intended. In particular, for example, the subject matter may be embodied as a method, device, component, system, or non-transient computer-readable medium for storing computer code. Thus, embodiments may take the form of, for example, hardware, software, firmware, storage medium, or any combination thereof. For example, the method embodiment described above may be implemented by a component, device, or system including memory and a processor by executing computer code stored in memory. 【0148】 Throughout this specification and the claims, terms may have nuances implied or suggested in context beyond their explicitly stated meanings. Similarly, the phrase "in one embodiment / implementation" as used herein does not necessarily refer to the same embodiment, and the phrase "in another embodiment / implementation" as used herein does not necessarily refer to a different embodiment. For example, the claimed subject matter is intended to include a combination of exemplary embodiments, whether in whole or in part. 【0149】 In general, technical terms can be understood, at least in part, from their usage in context. For example, terms such as “and,” “or,” or “and / or,” as used herein, can have various meanings, at least in part, depending on the context in which such terms are used. Typically, when “or” is used to relate a list such as “A, B, or C,” it is intended to mean both “A, B, and C,” used here in an inclusive sense, and “A, B or C,” used here in an exclusive sense. In addition, as used herein, the term “one or more” can be used, at least in part, depending on the context, to describe any feature, structure, or characteristic in a singular sense, or to describe a combination of features, structures, or characteristics in a plural sense. Similarly, terms such as "a," "an," or "the" can be understood, at least partially, depending on the context, to convey singular or plural usage. In addition, the term "based on" can be understood not as intended to convey an exclusive set of factors, but rather, again, at least partially, depending on the context, to allow for the presence of additional factors that are not necessarily explicitly stated. 【0150】 Throughout this specification, references to features, benefits, or similar terms do not imply that all features and benefits that can be realized using the Solution should be included in, or are included in, any single implementation thereof. Rather, terms referring to features and benefits should be understood to mean that specific features, benefits, or characteristics described in relation to a particular embodiment are included in at least one embodiment of the Solution. Accordingly, discussions of features, benefits, and similar terms throughout this specification may, but not necessarily, refer to the same embodiment. 【0151】 Furthermore, the described features, benefits, and characteristics of this solution may be combined in any preferred manner in one or more embodiments. Those skilled in the art will recognize, in light of the description herein, that this solution may be practiced without any particular features or benefits of a specific embodiment being surpassed. In other instances, additional features and benefits that may not be present in all embodiments of this solution may be recognized in certain embodiments.

Claims

[Claim 1] A method performed by a wireless access network node, the method is Based on a first signaling, an uplink subband for uplink transmission relating to user equipment (UE) is configured, wherein the uplink subband occupies a contiguous set of resource blocks and a set of symbols in time within a first set of resources. Includes, The flexible resource is configured within the uplink subband resource by a second signaling relating to the uplink subband, or A portion of the uplink subband resources is made available as a flexible resource through the second signaling. The first set of resources is configured as a downlink or directional flexible resource to the UE, The first signaling is a method used to configure the time-frequency resources of the uplink subband. [Claim 2] A method performed by a wireless access network node, the method is Based on a first signaling, an uplink subband for uplink transmission relating to user equipment (UE) is configured, wherein the uplink subband occupies a contiguous set of resource blocks within a frequency range and a set of OFDM symbols within a time range within a first set of resources. Transmitting downlink transmission within the aforementioned uplink subband Includes, The first set of resources is configured as a downlink or directional flexible resource to the UE, The first signaling described above is used to constitute the time-frequency resources of the uplink subband, The flexible resource is configured within the uplink subband resource by a second signaling relating to the uplink subband, or A method that enables a portion of the uplink subband resources to be configured as flexible resources by the second signaling. [Claim 3] A method performed by a wireless terminal device, wherein the method is Determining an uplink subband for uplink transmission based on the configuration from a wireless access network node, wherein the uplink subband occupies a contiguous set of resource blocks and a set of symbols in time within a first set of resources. Includes, Flexible resources are configured within the resources of the uplink subband by signaling relating to the uplink subband, or A portion of the uplink subband resources is made available as a flexible resource through the signaling. The first set of resources is configured as a downlink or directional flexible resource for the wireless terminal device. The above configuration is used as a time-frequency resource in the uplink subband. [Claim 4] The method further includes receiving scheduling of a second set of resources for uplink transmission from the wireless access network node, The method according to claim 3, wherein the second set of resources is partially within and partially outside the uplink subband in a time domain with respect to the OFDM symbol range defining the uplink subband via downlink control information (DCI) messages. [Claim 5] The method according to claim 4, wherein a portion of the second set of resources located outside the uplink subband is implemented as time-domain adjustment for the uplink subband. [Claim 6] The method according to claim 5, wherein the time domain adjustment for the uplink subband is effective only during the scheduling of the second set of resources for the uplink transmission, or effective until the next time domain adjustment for the uplink subband, or effective over a predetermined or configured period following the scheduling of the second set of resources for the uplink transmission. [Claim 7] The uplink subband configuration is transmitted in response to the radio access network node receiving a capability report from the radio terminal device, the capability report indicating that the radio terminal device supports subband full duplex (SBFD) or that the radio terminal device supports using the second set of resources for the uplink transmission, the method of claim 4. [Claim 8] The DCI message is, At least one parameter indicating the time and frequency location of the second set of resources to the wireless terminal device, An indicator in the wireless terminal device that indicates the uplink subband should be extended according to the second set of resources. The method according to claim 4, including the method described in claim 4. [Claim 9] The method according to claim 4, wherein the wireless access network node is prohibited from further scheduling any resources that are outside the uplink subband and that coexist in time with the second set of resources that are within the frequency resource range of the uplink subband. [Claim 10] The transmission direction of the flexible resource is determined based on the transmission direction scheduled within the flexible resource. The flexible resources configured within the uplink subband are One or more OFDM symbols that span the entire frequency range of the uplink subband, One or more frequency resource blocks that span the entire OFDM symbol range of the uplink subband and The method according to claim 3, including the method described in claim 3. [Claim 11] The method according to claim 3, wherein the flexible resource is configured in response to the wireless access network node receiving a capability report from the wireless terminal device, the capability report indicating that the wireless terminal device supports subband full duplex (SBFD) or that the wireless terminal device supports the flexible resource within the uplink subband. [Claim 12] A method performed by a wireless terminal device, wherein the method is Determining an uplink subband for uplink transmission based on the configuration from a wireless access network node, wherein the uplink subband occupies a contiguous set of resource blocks within a frequency range within a first set of resources and a set of OFDM symbols within a time range. To receive downlink transmissions from the aforementioned wireless access network node within the uplink subband. Includes, The first set of resources is configured as a downlink or directional flexible resource for the wireless terminal device. The above configuration is used for the time-frequency resources of the uplink subband, Flexible resources are configured within the resources of the uplink subband by signaling relating to the uplink subband, or A method that enables a portion of the uplink subband resources to be configured as flexible resources through the signaling. [Claim 13] The method according to claim 12, wherein receiving the downlink transmission within the uplink subband comprises receiving a signal from the radio access network node for scheduling the downlink transmission within at least one portion of the uplink subband, the at least one portion of the uplink subband overlapping with at least one portion of the uplink subband and not corresponding to any other portion of the uplink subband scheduled for uplink transmission. [Claim 14] The method according to claim 13, wherein the wireless access network node is prohibited from further scheduling uplink transmissions over a second set of resources that overlap with the at least one portion of the uplink subband in time and are within the frequency resource range of the uplink subband. [Claim 15] The method further comprises determining a first priority level for the uplink subband, the first priority level being used as a basis for determining whether downlink transmissions are to be scheduled within the uplink subband, The downlink transmission is enabled when the first priority level of the uplink subband is lower than the second priority level associated with the downlink transmission. The method according to claim 12, wherein the downlink transmission is prohibited if the first priority level of the uplink subband is higher than the second priority level associated with the downlink transmission. [Claim 16] The method according to claim 12, further comprising resolving a scheduling conflict between two downlink transmissions of the same priority with time overlap within the uplink subband, or between a downlink transmission and an uplink transmission, by maintaining transmissions within the frequency range of the uplink subband and discarding transmissions outside the frequency range of the uplink subband. [Claim 17] The method according to claim 12, further comprising prohibiting the scheduling of dynamic PDSCH downlink transmission and dynamic PUSCH / PUCCH by the same PDCCH with overlapping time within the uplink subband. [Claim 18] The method according to claim 12, further comprising resolving scheduling conflicts between the dynamic PDSCH downlink transmission and the dynamic PUSCH / PUCCH uplink transmission that overlap within the time in the uplink subband, based on the timing of separate scheduling PDCCHs for dynamic PDSCH downlink transmission and dynamic PUSCH / PUCCH uplink transmission. [Claim 19] The method described above is: Based on OFDM symbol-level time isolation between separate scheduled PDCCHs for dynamic PDSCH downlink transmission and semi-static PUSCH / PUCCH uplink transmission, or By maintaining the semi-static PUSCH / PUCCH uplink transmission and discarding the dynamic PDSCH downlink transmission, The method according to claim 12, further comprising resolving scheduling conflicts between the dynamic PDSCH downlink transmission and the semi-static PUSCH / PUCCH uplink transmission that overlap within the time frame of the uplink subband. [Claim 20] The method according to claim 12, further comprising resolving a scheduling conflict between the semi-static PDSCH downlink transmission and the dynamic or semi-static PUSCH / PUCCH uplink transmission that overlap within the time in the uplink subband by maintaining the dynamic or semi-static PUSCH / PUCCH uplink transmission and discarding the semi-static PDSCH downlink transmission.

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