Uplink frequency domain resource determination method and device, storage medium and electronic device

Abstract

The embodiment of the invention provides an uplink frequency domain resource determination method and device, a storage medium and an electronic device. The method comprises: determining a first uplink frequency domain resource in a downlink (DL) symbol; and performing uplink transmission for a random access process of the UE in the first uplink frequency domain resource. Through the embodiment of the invention, the problem that an uplink frequency domain resource which can be used for UE uplink transmission is set in a DL symbol, so that the uplink frequency domain resource can be used for the uplink transmission of the UE in an idle state or an inactive state through the setting of the uplink frequency domain resource is solved. Therefore, the problem that existing SBFD sub-band configuration and operation are not suitable for uplink transmission of UE in an idle state or an inactive state can be solved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a method, device, storage medium, and electronic device for determining uplink frequency domain resources. Background Art

[0002] In order to improve the uplink (UL) coverage of the Time Division Duplex (TDD) system, reduce the latency of UL transmission, and increase the capacity of UL transmission, the Subband Full Duplex (SBFD) technology proposes subband configuration and operation for the User Equipment (UE) in the Radio Resource Control (RRC) connected state.

[0003] However, IDLE / INACTIVE UEs do not have corresponding DL BWP and UL BWP and can only perform random access procedures through a common initial ULBWP and initial DL BWP. Therefore, the existing SBFD subband configuration and operation for connected UEs are not applicable to UL transmission of idle / inactive UEs. Summary of the Invention

[0004] Embodiments of the present invention provide a method, apparatus, storage medium, and electronic device for determining uplink frequency domain resources, to at least solve the problem in the related art that the existing SBFD subband configuration and operation are not applicable to UL transmission of IDLE / INACTIVE UE.

[0005] According to one embodiment of the present invention, a method for determining an uplink frequency domain resource is provided, which is applied to a terminal and includes: determining a first uplink frequency domain resource in a downlink DL symbol; and performing uplink transmission of a random access process for a UE in the first uplink frequency domain resource.

[0006] According to another embodiment of the present invention, a method for determining an uplink frequency domain resource is also provided, which is applied to a base station, including: determining a first uplink frequency domain resource in a downlink DL symbol; and receiving uplink transmission data sent during the random access process of the UE in the first uplink frequency domain resource.

[0007] According to another embodiment of the present invention, an uplink frequency domain resource determination device is provided, which is located on a terminal and includes: a configuration module for configuring a first uplink frequency domain resource in a downlink DL symbol; and a transmission module for using the first uplink frequency domain resource for uplink transmission of a random access process of a terminal UE.

[0008] According to another embodiment of the present invention, an uplink frequency domain resource determination device is also provided, which is located on the base station and includes: a second determination module for determining a first uplink frequency domain resource in a downlink DL symbol; and a receiving module for receiving uplink transmission data sent by the UE during a random access process in the first uplink frequency domain resource.

[0009] According to yet another embodiment of the present invention, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is configured to execute the steps of any one of the above method embodiments when run.

[0010] According to another embodiment of the present invention, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the steps in any one of the above method embodiments.

[0011] Through the above-described embodiments of the present invention, an uplink frequency domain resource is set in a DL symbol that can be used for UE uplink transmission. This uplink frequency domain resource can then be used for uplink transmission by idle or inactive UEs. This resolves the issue that existing SBFD subband configuration and operation are not suitable for uplink transmission by idle / inactive UEs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 1 is a schematic diagram of a first SBFD subband configuration method in a DL symbol in the related art;

[0013] Figure 2 2 is a schematic diagram of a second SBFD subband configuration method in a DL symbol in the related art;

[0014] Figure 3 This is a hardware structure block diagram of a network device that executes an uplink frequency domain resource determination method according to an embodiment of the present invention;

[0015] Figure 4 is a flowchart of a method for determining uplink frequency domain resources according to an embodiment of the present invention;

[0016] Figure 5 is a schematic diagram of determining frequency domain resource A in a DL symbol according to an embodiment of the present invention;

[0017] Figure 6 is a schematic diagram of determining a second initial UL BWP in the frequency domain in a DL symbol according to an embodiment of the present invention;

[0018] Figure 7 is a schematic diagram of determining a second UL subband in a frequency domain in a DL symbol according to an embodiment of the present invention;

[0019] Figure 8 is a flowchart of a method for determining uplink frequency domain resources according to another embodiment of the present invention;

[0020] Figure 9 is a schematic diagram of determining a DL subband according to an embodiment of the present invention;

[0021] Figure 10 is a schematic diagram of determining a DL subband according to another embodiment of the present invention;

[0022] Figure 11 is a schematic diagram of determining a DL subband according to yet another embodiment of the present invention;

[0023] Figure 12 is a schematic diagram of a specific implementation of method 2 according to an embodiment of the present invention;

[0024] Figure 13 is a schematic diagram of a specific implementation of method 3 according to an embodiment of the present invention;

[0025] Figure 14 is a structural block diagram of an uplink frequency domain resource determination apparatus according to an embodiment of the present invention;

[0026] Figure 15 It is a structural block diagram of an uplink frequency domain resource determination device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0027] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and in combination with embodiments.

[0028] In the existing SBFD subband configuration scheme for connected UEs, one UL subband and up to two DL subbands are configured in some or all downlink (DL) symbols / slots. For example, the UL subband and the DL subband are configured in a downlink bandwidth part (DL BWP) and an uplink bandwidth part (UL BWP) pair, and the DL BWP and UL BWP pair have the same center frequency. In the frequency domain, the frequency domain resources of the UL subband and the frequency domain resources of the DL subband are generally considered to be configured within the frequency domain range of the DL BWP, that is, the frequency domain range of the DL BWP includes the frequency domain range of the UL / DL subband, and the DL BWP is valid in the DL symbol or slot. However, the frequency domain resources of the UL subband and the frequency domain resources of the DL subband can also be configured outside the DL BWP, for example, the frequency domain resources of the UL subband and the frequency domain resources of the DL subband may partially or completely exceed the frequency domain range of the DL BWP.

[0029] The above-mentioned UL subbands and DL subbands are also collectively referred to as SBFD subbands. One UL subband and up to two DL subbands are configured in part or all of the DL symbols / slots. That is, one SBFD subband is configured in the DL symbol / slot. The SBFD subband generally includes at least one DL subband and one UL subband.

[0030] For example, in a 100MHz TDD carrier, 20 consecutive RBs are configured as UL subbands in a DL BWP within a DL symbol / slot. The remaining frequency domain resources of the DL BWP are DL subbands (gap resources may not be configured). Alternatively, a DL subband can be configured in a DL BWP within a DL symbol / slot. In this way, within a DL symbol / slot, the UL subband can be used for UL transmissions of connected UEs, and the DL subband can be used for DL transmissions of connected UEs. Figure 1 As shown in FIG, two DL subbands and one UL subband are configured in the DL symbol / slot, and the UL subband is set to be interleaved between the two DL subbands. This structure is generally called "DUD" (based on frequency domain structure); Figure 2 As shown, one UL subband and one DL subband are configured in a DL symbol. This structure is generally called "DU" / "UD" (based on the frequency domain structure).

[0031] At the current stage, sub-band full-duplex technology includes the following features:

[0032] The base station has the ability to simultaneously receive (in the UL subband) and transmit (in the DL subband) in the same time domain. The UE does not have the ability to simultaneously receive (in the DL subband) and transmit (in the UL subband) in the same time domain. The UL subband and DL subband are allocated in the same OFDM symbol / slot and are frequency-divided.

[0033] When a UE in the RRC idle / inactive state performs a random access procedure, the related UL transmission and DL reception are based on the initial UL BWP and initial DL BWP, respectively. The initial UL BWP and initial DL BWP are cell-common channels for the UE, that is, all UEs in the cell have the same initial UL BWP and initial DL BWP. Therefore, since the idle / inactive UE does not have a corresponding DL BWP and UL BWP, but only has a common initial UL BWP and initial DL BWP, the above SBFD subband configuration and operation for connected UEs do not apply to idle / inactive UEs.

[0034] For the convenience of description, some technical terms are as follows:

[0035] A symbol configured with an SBFD subband is called an SBFD symbol, and a slot containing an SBFD symbol is called an SBFD slot. A symbol not configured with an SBFD subband is called a non-SBFD symbol (that is, a regular symbol), and a slot not containing the SBFD symbol is called a non-SBFD slot.

[0036] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0037] The method embodiments provided in the embodiments of the present application can be executed in a network device, a computer terminal or a similar computing device. Taking running on a network device as an example, Figure 3 FIG is a hardware structure block diagram of a network device for running an uplink frequency domain resource configuration method according to an embodiment of the present invention. Figure 3 As shown, the network device may include one or more ( Figure 3 Only one is shown) a processor 102 (the processor 102 may include but is not limited to a microprocessor MCU or a programmable logic device FPGA and other processing devices) and a memory 104 for storing data. The above network device may also include a transmission device 106 and an input and output device 108 for communication functions. It will be understood by those skilled in the art that Figure 3 The structure shown is only for illustration and does not limit the structure of the above network device. Figure 3 More or fewer components than shown, or with Figure 3 Different configurations shown.

[0038] The memory 104 can be used to store computer programs, such as software programs and modules of application software, such as the computer program corresponding to the uplink frequency domain resource configuration method in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, implementing the above-mentioned method. The memory 104 may include a high-speed random access memory and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely located relative to the processor 102, and these remote memories may be connected to a network device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0039] The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned network may include a wireless network provided by a communications provider of the network device. In one embodiment, the transmission device 106 may include a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0040] In related technologies, SBFD subbands (including UL subbands and DL subbands) are configured in DL symbols / F symbols, and the DL subband and UL subband frequency domain resources are configured within the DL BWP and UL BWP frequency domain ranges, and the center frequencies of the DL BWP and UL BWP are aligned. Based on the existing configuration, this embodiment of the invention provides an uplink frequency domain resource configuration method running on the above-mentioned network device, which is applied to a terminal. Figure 4 is a flow chart of a method for configuring uplink frequency domain resources according to an embodiment of the present invention. Figure 4 As shown, the process includes the following steps:

[0041] Step S402: configuring a first uplink frequency domain resource in a downlink DL symbol;

[0042] In related technologies, a first initial UL BWP is configured in a UL symbol for uplink transmission. To support random access procedures for idle / inactive UEs and subsequent data transmission, a UL subband is configured in a DL symbol for UL transmission. Furthermore, this embodiment further configures / determines a first uplink frequency-domain resource in a downlink DL symbol. Specifically, configuring / determining this first uplink frequency-domain resource includes: allocating a plurality of consecutive resource blocks (RBs) (hereinafter referred to as resource A) in the DL symbol based on the first UL subband in the DL symbol, wherein the resource A overlaps with the first UL subband in the DL symbol in the frequency domain. The first UL subband is a cell-common UL subband.

[0043] In this embodiment, the relationship between the frequency domain resources of resource A and the frequency domain resources of the first UL subband includes: a complete inclusion relationship and a partial inclusion relationship, that is, resource A overlaps with the first UL subband in the DL symbol in the frequency domain.

[0044] For example: A typical situation is that the frequency domain range of the first UL subband completely includes the frequency domain resources of resource A. It can also be that the range of the frequency domain resources of resource A completely includes the frequency domain range of the first UL subband, or the frequency domain range of the first UL subband partially overlaps with the frequency domain range of resource A.

[0045] Figure 5 Schematic diagram of configuring frequency domain resource A in DL symbol according to an embodiment of the present invention. Figure 5 , which illustrates the case where the frequency domain range of the first UL subband completely includes the frequency domain range of resource A.

[0046] In this embodiment, the relationship between the frequency domain resources of resource A and the frequency domain resources of the first UL subband includes: the frequency domain resources are continuous, that is, in order to reduce the number of frequency domain gaps between resource A and the UL subband to avoid wasting frequency domain resources, the frequency domain resources of resource A and the first UL subband are configured as continuous frequency domain resources.

[0047] In this embodiment, configuring continuous resources A in the DL symbol includes: determining the resources A based on the starting resource block of the first UL subband or the ending resource block of the first UL subband and in combination with a first offset; wherein the first offset is predefined or notified through base station signaling.

[0048] In one embodiment, if the starting (or ending) RB of the UL subband is not a complete RB (for example, part of the subcarriers of the RB are within the UL subband, and the other part of the subcarriers are not within the UL subband), the base station and the UE agree on the incomplete RB or the next RB of the incomplete RB as the starting point of the offset.

[0049] If the incomplete RB is agreed to be the starting point of the offset, the subcarriers within the incomplete RB and within the UL subband should be counted as part of resource A, and the subcarriers within the incomplete RB and not within the UL subband are not counted as part of resource A.

[0050] In an embodiment of the present invention, the frequency domain of resource A generally does not exceed the frequency domain of the first UL subband, but for some specific scenarios, the frequency domain of resource A may also exceed the frequency domain range of the first UL subband, that is, the frequency domain resources and size of resource A can be independently configured by the base station.

[0051] In this embodiment, resource A and the first UL subband have the same time domain period and / or position. For example, they have the same period and the same slot and / or symbol position within a period. In this way, the configured resource A (maximum frequency domain range) has the same frequency domain size as the first initial UL BWP, but the frequency domain position of resource A is not necessarily the same as the first initial UL BWP. The first initial UL BWP is set in the UL symbol. Figure 5 It is only illustrated that the size of the frequency domain resource of resource A is equal to the size of the frequency domain resource of the first initial UL BWP, and the frequency domain positions of the two are different.

[0052] In this embodiment, the number of RBs does not exceed the number of RBs corresponding to the first initial uplink partial bandwidth UL BWP in the frequency domain, and the first initial UL BWP is configured for UL transmission in a UL symbol.

[0053] In this embodiment, configuring continuous resource A in the DL symbol includes one of the following: determining multiple continuous resource blocks inward based on one side of the first UL subband and using them as resource A; determining multiple resource blocks in the center of the first UL subband as resource A.

[0054] For example, starting from the RB at (or near the center of) the first UL subband and extending toward both sides, the maximum number of RBs for resource A is determined, and this number of RBs still equals the number of RBs in the initial UL BWP. That is, a maximum of m (an integer greater than or equal to 0) RBs at (or near the center of) the first UL subband are configured as resource A, where m equals the number of RBs in the initial UL BWP. There are various methods for determining the specific RB frequency domain positions. For example, the center RB of these m RBs can be determined, and the remaining RBs can be determined by extending toward both sides of the UL subband.

[0055] For another example, a starting RB of resource A is determined, and other RBs are determined extending toward a certain side of the first UL subband.

[0056] For another example, the end RB of resource A is determined, and other RBs are determined by extending to a certain side of the UL subband.

[0057] In a specific configuration method, the location and size of resource A are determined as follows:

[0058] From the first UL sub-band RB starts, among which, is the bandwidth of the first UL subband, that is, the number of RBs in the first UL subband; determining that at most m consecutive RBs are configured as resource A on one side of the UL subband, thereby obtaining resource A, wherein it is pre-agreed whether resource A includes incomplete RBs at the boundary, that is, the base station can pre-agreed with the UE whether resource A includes the incomplete RBs at the boundary. The resource A obtained in this way is generally located at the center of the first UL sub-band, thereby avoiding the use of the edge RBs of the first UL sub-band, thereby reducing the interference in the resource A from the DL sub-band.

[0059] In this embodiment, the purpose of determining a resource A from the first UL subband is to ensure that, when an idle or inactive UE performs UL transmission in the first UL subband, the size of the frequency domain resource obtained from the UL subband's frequency domain does not exceed the size of the frequency domain resource of the initial UL BWP. This allows the UE to perform UL transmission in this obtained resource. Because the base station is unclear about the frequency domain bandwidth capabilities supported by the idle or inactive UE, frequency domain resource allocation to the idle or inactive UE is performed based on the size of the initial UL BWP. The initial UL BWP is assumed to be supported by the UE's capabilities and is generally a relatively small size. After a UE accesses the network, such as a connected UE, if it is not configured with a UE-specific UL subband, it can also use resource A. Furthermore, if a UE is not configured with a UE-specific UL subband, the base station and UE can agree that the connected UE can also use the entire UL subband (which is common to the cell). For example, a connected state UE uses the PUSCH resource set / PUCCH resource set / PRACH (PRACH opportunity) resource set associated with resource A, etc. For example, a connected state UE uses the PUSCH resource set / PUCCH resource set / PRACH (PRACH opportunity) resource set associated with the first UL subband.

[0060] In one embodiment, the base station and the UE may agree not to define a clear name for resource A, but still use the time-frequency resources corresponding to resource A, that is, to define a block of time-frequency resources in the manner of defining resource A. This time-frequency resource replaces the above-mentioned resource A, but it is not necessary to call this time-frequency resource resource resource A. For example, the PUSCH (i.e., msg3) scheduled by the RAR UL grant in the random access process uses the time-frequency resources of the first UL sub-band as follows: in the DL symbol, starting from the starting RB of the first UL sub-band, a maximum of n (n is an integer greater than or equal to 0) consecutive RBs are determined to be used for frequency domain resource allocation for msg3 transmission (for example, these RBs determined in the first UL sub-band can also be used for the transmission of the PRACH sequence or the HARQ-ACK PUCCH corresponding to msg4 or the frequency domain resource allocation of the PUCCH). n is equal to the number of RBs in the initial UL BWP. Or, in another specific example, in a DL symbol, a maximum of k (k is an integer greater than or equal to 0) RBs are determined from the RB at the center (or near the center) of the first UL subband. The k RBs can be used for frequency domain resource allocation for msg3 transmission (for example, these RBs determined in the first UL subband can also be used for HARQ-ACK PUCCH transmission corresponding to msg4 or frequency domain resource allocation of the PUCCH), and k is equal to the number of RBs in the initial UL BWP. That is, a maximum of k RBs in the middle of the first UL subband are used for msg3 transmission, and k is equal to the number of RBs in the initial UL BWP. There are many specific determination methods, for example, determining the center RB of the k RBs of the frequency domain resource allocation corresponding to msg3 transmission, and extending to both sides to determine other RBs; for example, determining the first RB used for msg3 transmission, and then extending to one side to determine k RBs. For example, determining the starting (or ending) RB of the frequency domain resource allocation corresponding to msg3 transmission, and extending to one side to determine k RBs. One method is given as an example. For example, from the first RB of the first UL subband, RBs (the base station and the UE agree whether to include this RB), and at most k RBs are used for the frequency domain resource allocation corresponding to the msg3 transmission (the base station and the UE agree whether to include the incomplete RBs at the boundary). It is the bandwidth of the first UL subband, which is described based on RB, that is, the number of RBs in the UL subband. It can also be that the base station and the UE agree that the frequency domain position and frequency domain size of the block of resources determined in the first UL subband are defaulted to the same as the frequency domain position and size of the initial UL BWP. Alternatively, the block of resources determined in the first UL subband is the resource that overlaps the first UL subband with the initial UL BWP in the frequency domain. The block of time-frequency resources determined in this way can be used for idle UEs or inactive UEs, or for linked UEs (when the cell-common UL subband is configured but the UE-specific UL subband resources are not configured). The first UL subband herein can be a cell-common UL subband or a UE-specific UL subband at the UE level.

[0061] In this embodiment, Resource A in the DL symbol / slot and in the first UL subband has the same function as the configured initial UL BWP. For example, Resource A can be used for UL transmissions during random access for idle / inactive UEs, including but not limited to: PRACH transmission, PUSCH (i.e., msg3) scheduled by an RAR UL grant during random access, HARQ-ACK PUCCH transmission corresponding to msg4, or frequency domain resource allocation for the PUCCH. It can also be used for subsequent UL transmissions, such as UL transmissions for connected UEs. DL transmissions related to random access can be performed based on the initial DL BWP in the DL symbol / F symbol. The base station and UE agree that the frequency domain location and size of Resource A in the first UL subband in the DL symbol can also be determined to have the same size and location as the initial UL BWP. Alternatively, the base station and UE agree that, in the first UL subband in the DL symbol, the overlapping portion of the frequency domain resources of the first UL subband and the frequency domain resources of the initial UL BWP is defined as Resource A.

[0062] Based on the above resource configuration method and in combination with the characteristics of the TDD system, the initial UL BWP (i.e., the first initial UL BWP) and the initial DL BWP appear in pairs and have the same frequency domain center. In this case, the first UL subband or resource A overlaps with the DL BWP in the DL symbol in the frequency domain. That is, in the DL symbol, the initial DL BWP and resource A will overlap in the time-frequency domain. However, the frequency domain resources of the initial DL BWP should not overlap with the frequency domain resources of resource A or the UL subband in the frequency domain. For example, when the base station configures the frequency domain resources of resource A (or the first UL subband), the base station should ensure that its frequency domain resources do not overlap with the frequency domain resources of the initial DL BWP.

[0063] For the case where the first UL subband or resource A overlaps with the initial DL BWP in the DL symbol in the frequency domain, for a UE, the base station avoids overlap in the time domain between DL reception in the initial DL BWP and UL transmission in resource A through configuration or scheduling; or, the UE considers that the initial DL BWP in the DL symbol of resource A is invalid or unavailable.

[0064] For example: the base station and the UE may agree to set the RBs and the initial DL BWP to time division multiplexing; or set the UL transmission of the RBs and the DL reception of the initial DL BWP to different usage priorities, in response to the UL transmission in the RBs and the DL reception in the initial DL BWP overlapping in the time domain.

[0065] In an exemplary embodiment, if the frequency domain resources of resource A (or the first UL subband) configured by the base station overlap with the frequency domain resources of the initial DL BWP, the UE considers that the initial DL BWP has a higher priority, that is, part of the frequency domain resources of resource A (or the first UL subband) located in the frequency domain resources of the initial DL BWP is invalid / unavailable, and this part of the frequency domain resources of resource A cannot be used for UL transmission because DL transmission has a higher priority in this part of the frequency domain resources.

[0066] In an exemplary embodiment, the frequency domain resources of the initial DL BWP can overlap with the frequency domain resources of resource A (or the first UL subband) in the frequency domain, but are time-divided in the time domain (i.e., they cannot overlap). For example, for a UE that knows the frequency domain resource configuration of resource A (or the first UL subband), in the DL symbols / F symbols configured with the frequency domain resources of resource A (or the first UL subband), the initial DL BWP in the overlapping portion is invalid / unusable, that is, in these DL symbols / F symbols, the originally configured initial DL BWP is unusable.

[0067] In this embodiment, resource A is configured through a system information block or system broadcast information.

[0068] For example: resource A is configured in PBCH (ie, MIB), or in SIB1, or in other SIBs; or, resource A can also be configured together with the first UL subband, that is, resource A is configured simultaneously in the RRC signaling of the first UL subband.

[0069] Resource A can also avoid signaling configuration and reduce signaling overhead. For example, the base station and the UE agree that resource A always exists in the first UL subband, including the frequency domain resources of resource A determined from the first UL subband based on the above method, and the time domain resources (symbols and / or slots) of resource A are always the same as the first UL subband.

[0070] In step S402 of this embodiment, configuring / determining a first uplink frequency domain resource in a downlink DL symbol further includes: configuring a second initial UL BWP in the DL symbol as the first uplink frequency domain resource.

[0071] In one embodiment, the frequency domain size of the second initial UL BWP does not exceed the frequency domain size of the first initial UL BWP.

[0072] In one embodiment, the second initial UL BWP has the same frequency domain size as the first initial UL BWP in the uplink UL symbol.

[0073] Configuring the second initial UL BWP in a DL symbol as the first uplink frequency-domain resource may involve extending the first initial UL BWP from the UL symbol into the DL symbol, or by the base station configuring a separate initial UL BWP in the DL symbol. This allows the UE to have a usable initial UL BWP in the DL symbol and perform random access UL transmission and subsequent data transmission. Furthermore, the SCS and / or CP of the initial UL BWP in the DL symbol is determined to be the same as the SCS and / or CP of the initial DL BWP, or the same as the SCS and / or CP of the DL BWP.

[0074] Extending the first initial UL BWP from the UL symbol to the DL symbol includes: configuring the first initial UL BWP in the DL symbol, wherein the first initial UL BWP in the DL symbol is the same as the first initial UL BWP in the UL symbol in the frequency domain; or, in response to the DL symbol being configured with the first UL subband, the first initial UL BWP is configured as valid in the DL symbol (i.e., the base station and the UE agree that if the DL symbol is configured with the first UL subband, the first initial UL BWP is also available in the DL symbol).

[0075] In this embodiment, the second initial UL BWP configured in the DL symbol has the same frequency domain position as the first initial UL BWP in the UL symbol, so as to facilitate the operation of the second initial UL BWP in the DL symbol and the first initial UL BWP in the UL symbol; and in the time domain, the second initial UL BWP in the DL symbol has the same period and / or position as the first UL subband. Figure 6 As shown, the second initial UL BWP in the DL symbol has the same periodic pattern as the UL subband in the time domain, and the symbol and / or slot where the second initial UL BWP in the DL symbol / F symbol is located is the same as the symbol and / or slot where the UL subband is located.

[0076] In one embodiment, the frequency domain position of the second initial UL BWP in the DL symbol may be different from the frequency domain position of the first initial UL BWP in the UL symbol, but maintain the same frequency domain size. A frequency domain offset between the first initial UL BWP and the second initial UL BWP may be defined. For example, an offset may be introduced based on the starting RB or the ending RB of the first initial UL BWP in the UL symbol to determine the second initial UL BWP in the DL symbol. In this way, the second initial UL BWP and the initial UL BWP may be frequency-separated in the frequency domain.

[0077] In one embodiment, if the starting or ending RB is not a complete RB, the base station and the UE agree that the RB or the next RB of the RB is used as the starting point of the offset. Further, if the RB is agreed as the starting point of the offset, the subcarriers within the RB and within the first UL subband should be counted in the second initial UL BWP, and the subcarriers within the RB but not within the first UL subband are not counted in the second initial UL BWP.

[0078] In this embodiment, the frequency domain resources of the second initial UL BWP and the frequency domain resources of the first UL subband in the DL symbol may be fully or partially overlapped, or non-overlapped in the frequency domain.

[0079] For example: A typical situation is that the frequency domain resources of the second initial UL BWP are within the frequency domain range of the first UL subband, or part of the frequency domain resources of the second initial UL BWP are within the frequency domain range of the first UL subband, or all the frequency domain resources of the second initial UL BWP are outside the frequency domain range of the first UL subband.

[0080] The base station configures an independent initial UL BWP (i.e., a second initial UL BWP) in a DL symbol (the DL symbol is configured with an SBFD subband). The independent initial UL BWP is used by a UE that is aware of the SBFD configuration for random access-related UL transmissions and subsequent UL transmissions of the UE. The independent initial UL BWP is different from the first initial UL BWP in the UL symbol and is independent of the first initial UL BWP in the UL symbol.

[0081] Configuring time domain resources for the independent initial UL BWP includes configuring a periodic pattern for the independent initial UL BWP in the time domain, wherein the periodic pattern is configured at a slot or symbol granularity, and within each periodic pattern, the slot or symbol used for the independent initial UL BWP remains the same, and the independent initial UL BWP in the DL symbol has the same periodic pattern as the first UL subband in the time domain. That is, the symbol and / or slot in which the initial UL BWP in the DL symbol is located is the same as the symbol and / or slot in which the first UL subband is located. The frequency domain resources of the independent initial UL BWP in the DL symbol are located within the frequency domain resources of the first UL subband, or the frequency domain resources of the independent initial UL BWP are configured outside of, or partially overlap with, the frequency domain resources of the first UL subband.

[0082] In one embodiment, the frequency domain resources of the independent initial UL BWP that exceed the frequency domain resources of the first UL sub-band are invalid, which means that they cannot be used for UL transmission.

[0083] In one embodiment, the frequency domain resources of the independent initial UL BWP beyond the frequency domain resources of the first UL subband are also valid, that is, they can be used for UL transmission. In this way, the frequency domain resources used for UL transmission in the DL symbol are the union of the frequency domain resources of the independent initial UL BWP and the first UL subband.

[0084] With the above configuration, there are two initial UL BWPs in the system: one in the UL symbol and the other in the DL symbol. The former is applicable to all types of UEs, including UEs that are aware of SBFD configuration and UEs that are not configured with SBFD, while the latter is only applicable to UEs that are aware of SBFD configuration.

[0085] In one embodiment, if one of the initial UL BWPs is not configured, the other configured initial UL BWP applies to both DL and UL symbols. For example, in a typical case, if the initial UL BWP in a DL symbol is not configured, but the initial UL BWP in a UL symbol is configured, the configured initial UL BWP also applies to the DL symbol. In an atypical case, if the initial UL BWP in a UL symbol is not configured, but the initial UL BWP in a DL symbol is configured, the configured initial UL BWP also applies to the UL symbol.

[0086] The independent initial UL BWP in the embodiment of the present invention is just a name, and it can be called by other names, but still has the functions described in the embodiment of the present invention.

[0087] In this embodiment, for UEs supporting SBFD operation, idle / inactive UEs can perform PRACH transmission, PUCCH of msg3, msg4 in the second initial UL BWP of DL symbols.

[0088] In step S402 of this embodiment, configuring the first uplink frequency domain resource in the downlink DL symbol includes: configuring the second UL subband in the DL symbol as the first uplink frequency domain resource.

[0089] The second UL subband is configured and exists independently of the above-mentioned first UL subband. In the time domain, the second UL subband has the same period and / or position as the first UL subband, that is, within a periodic pattern, the second UL subband has the same symbol and slot position as the first UL subband; or, if the second UL subband is not configured with a time domain resource position and period, the time domain resource position and period of the second UL subband are the same as the time domain resource position and period of the UL subband; or the frequency domain starting RB of the second UL subband is defined based on the common RB grid (e.g., the starting RB of the common RB), for example, by introducing an offset relative to the starting RB of the common RB.

[0090] In this embodiment, for a UE aware of the SBFD configuration, the base station configures PRACH transmission resources in the second UL subband. The second UL subband can be used for UL transmissions during random access, such as PRACH transmissions and PUCCHs for msg3 and msg4. The UE performs PRACH transmissions in the resources configured for PRACH transmissions in the second UL subband. In response to this PRACH transmission, the base station sends a DCI-scheduled PDSCH scrambled by the RA-RNTI in the initial DL BWP. In response to this PDSCH, the UE transmits a PUSCH (i.e., msg3) scheduled by the RAR UL grant in the second UL subband. In response to this PUSCH, the base station sends a DCI-scheduled PDSCH (i.e., msg4) scrambled by the TC-RNTI in the initial DL BWP. The UE transmits the HARQ-ACK PUCCH corresponding to this PDSCH (i.e., the PUCCH for msg4) in the second UL subband.

[0091] In one embodiment, Figure 7 As shown, the second UL subband is configured in the frequency domain of the initial DL BWP of the DL symbol. At this time, the second UL subband and the first UL subband will exist simultaneously in the DL symbol. The base station and the UE can agree that the UL transmission in the random access process is performed in the second UL subband.

[0092] In one embodiment, the UE's PRACH transmission may be performed in either the second UL subband or the first UL subband. If the UE chooses to perform a PRACH transmission in the second UL subband (or the first UL subband), other UL transmissions associated with the PRACH transmission (e.g., the subsequent PUCCH of msg3 or msg4) are also performed in the second UL subband (or the first UL subband).

[0093] In this embodiment, to reduce the number of frequency domain gaps between the DL subband and the UL subband, the base station configures the relationship between the frequency domain resources of the second UL subband and the frequency domain resources of the first UL subband to include: a complete inclusion relationship and a partial inclusion relationship.

[0094] For example, in the frequency domain, the first UL subband completely includes the second UL subband, or the second UL subband completely includes the first UL subband, the first UL subband partially includes the second UL subband, or the second UL subband partially includes the first UL subband.

[0095] In one embodiment, there is a frequency domain resource continuity relationship between the first UL sub-band and the second UL sub-band, that is, there is no redundant gap between the first UL sub-band and the second UL sub-band, presenting an effect of frequency domain resource continuity.

[0096] In one embodiment, the second UL subband is configured based on an RB set consisting of consecutive RBs, and there is an offset between the starting RB of the second UL subband and the starting RB of the initial DL BWP in the DL symbol. The offset is predefined or configured by the base station through signaling.

[0097] In one embodiment, the frequency domain size of the second UL subband is not smaller than the frequency domain size of the first initial UL BWP.

[0098] In one embodiment, if the second UL subband is not configured with a frequency domain resource size, the base station and the UE assume that the frequency domain resource size of the second UL subband is equal to the size of the first initial UL BWP.

[0099] In one embodiment, if the second UL subband is not configured with a time domain resource position and period, the time domain resource position and period of the second UL subband are the same as those of the first UL subband.

[0100] In one embodiment, the frequency domain starting RB of the second UL subband is defined based on the common RB grid (eg, the starting RB of the common RB), for example, by introducing an offset relative to the starting RB of the common RB.

[0101] In one embodiment, the second UL subband may be configured within the frequency domain range of the first initial UL BWP. In this case, although the first initial UL BWP is not configured in a DL symbol, the second UL subband is configured in a DL symbol, and the frequency domain resources of the second UL subband are configured within the frequency domain resource range of the first initial UL BWP.

[0102] For UEs that are aware of the SBFD configuration, if the second UL subband and the first initial UL BWP exist simultaneously, the base station and the UE can agree that the UE's PRACH transmission can be performed in either the second UL subband or the first initial UL BWP. Based on this, if the UE chooses to perform a PRACH transmission in the second UL subband (or the first initial UL BWP), other UL transmissions associated with the PRACH transmission (e.g., the subsequent PUCCH of msg3 or msg4) can also be performed in the second UL subband or the first UL subband.

[0103] In order to reduce the number of frequency domain gaps between the DL subband and the UL subband, the relationship between the frequency domain of the second UL subband configured by the base station and the frequency domain resources of the initial UL BWP includes: a complete inclusion relationship and a partial inclusion relationship.

[0104] For example, in the frequency domain, the second UL subband completely includes the initial UL BWP, or the initial UL BWP completely includes the second UL subband, the second UL subband partially includes the initial UL BWP, or the initial UL BWP partially includes the second UL subband.

[0105] In one embodiment, there is a relationship of continuous frequency domain resources between the initial UL BWP and the second UL subband.

[0106] The second UL subband is configured in the frequency domain of the first UL subband. In this case, the second UL subband and the first UL subband coexist in the DL symbol. In this case, the base station and the UE can agree that the UL transmission during the random access process is performed in the second UL subband.

[0107] In one embodiment, a UE's PRACH transmission can be performed in either the second UL subband or the first UL subband. Therefore, if the UE chooses to perform a PRACH transmission in the second UL subband (or the first UL subband), other UL transmissions associated with the PRACH transmission (e.g., the subsequent PUCCH of msg3 or msg4) are also performed in the second UL subband (the first UL subband).

[0108] Similarly, to reduce the number of frequency domain gaps between the DL subband and the UL subband, the base station configures a relationship between the frequency domain resources of the second UL subband and the frequency domain resources of the first UL subband, including complete inclusion, partial inclusion, or contiguous frequency domain resources. The specific relationship between the first UL subband and the second UL subband, as well as the determination of the size and position of the second UL subband, can be found in the previous embodiment and will not be further described in this embodiment.

[0109] In one embodiment, the frequency domain resources of the second UL subband are independently configured and have no frequency domain location restriction relationship with the DL BWP or the initial DLBWP, that is, the frequency domain location and size of the second UL subband are independently configured.

[0110] In one embodiment, the second UL subband is configured to be in the frequency domain of both the initial DL BWP and the first initial UL BWP.

[0111] Step S404: Use the first uplink frequency domain resource for uplink transmission in a random access process of the UE. The UE status includes: connected (state), idle (state), and inactive (state).

[0112] The above embodiment can also be applied to the SFDB subband configuration of the F symbol. The specific application method can refer to the above embodiment, and the embodiment of the present invention will not be described in detail here.

[0113] The embodiment of the present invention also provides a method for determining uplink frequency domain resources, which is applied to a base station, such as Figure 8 As shown, the method includes the following steps:

[0114] Step S802: determining a first uplink frequency domain resource in a downlink DL symbol;

[0115] Step S804: receiving uplink transmission data sent during the random access process of the UE in the first uplink frequency domain resource.

[0116] In this embodiment, the states of the UE include: idle state, inactive state, and active state.

[0117] In one embodiment, determining a first uplink frequency domain resource in a downlink DL symbol includes: configuring a plurality of consecutive resource blocks RBs in the DL symbol based on a first UL subband in the DL symbol, wherein the RBs overlap with the first UL subband in the DL symbol in the frequency domain.

[0118] In one embodiment, configuring a first uplink frequency domain resource in a downlink DL symbol includes: configuring a second initial UL BWP in the DL symbol as the first uplink frequency domain resource, wherein the second initial UL BWP has the same frequency domain size as the first initial UL BWP in the uplink UL symbol.

[0119] In one embodiment, configuring the first uplink frequency domain resource in a downlink DL symbol includes: configuring the first initial UL BWP in the DL symbol, wherein the first initial UL BWP in the DL symbol is the same as the first initial UL BWP in the UL symbol in the frequency domain; or, in response to the DL symbol being configured with a first UL subband, the first initial UL BWP is configured as valid in the DL symbol.

[0120] In one embodiment, configuring a first uplink frequency domain resource in a downlink DL symbol includes configuring a second UL subband in the DL symbol as the first uplink frequency domain resource, wherein in the frequency domain, the second UL subband overlaps with an initial DL BWP in the DL symbol.

[0121] Through the above steps, an uplink frequency domain resource is set in the DL symbol that can be used for UE uplink transmission. This uplink frequency domain resource setting can then be used for uplink transmission of idle or inactive UEs. This solves the problem that existing SBFD subband configuration and operation are not suitable for uplink transmission of idle / inactive UEs.

[0122] To facilitate understanding of the technical solutions provided by the present invention, embodiments of the present invention will be described in detail below with reference to specific scenarios.

[0123] The embodiment of the present invention provides a specific method for UL subband configuration, and in particular relates to a configuration method when a cell-common SBFD subband and a UE-specific SBFD subband coexist. SBFD subbands include at most one UL subband and at most two DL subbands.

[0124] To reduce signaling overhead, the following methods can be considered for configuring SBFD subbands:

[0125] First, the base station configures a UL subband based on the following parameters: the starting point of the UL subband and the number of consecutive RBs in the UL subband (or the ending point of the UL subband). The starting point can be described on an RB basis. For example, it can indicate an RB index or an RB offset from the starting RB (i.e., RB0) (i.e., the starting point is obtained by offsetting n RBs from RB0). The number of consecutive RBs can be described on an RB basis, for example, indicating the number of RBs. The ending point can be described on an RB basis, for example, indicating an RB index.

[0126] Secondly, the base station configures or determines the DL subband based on the following parameters (for example: Figure 9 DL subband 1): the starting point of the DL subband, the number of consecutive RBs of the DL subband (or the ending point of the DL subband).

[0127] For example, Figure 9 For example, the starting point of DL subband 1 is described as being based on RBs; indicating an RB index or an RB offset starting from the starting RB (i.e., RB0) (i.e., the starting point is obtained by offsetting n RBs from RB0). Alternatively, the starting point of DL subband 1 can also be based on the boundary of the UL subband (e.g., the RB at the upper boundary), and then combined with the size of the guard band (Guardband) to derive the starting point of DL subband 1. Alternatively, the starting point of DL subband 1 can also be based on the boundary of the UL subband (e.g., the RB at the upper boundary), and then an RB offset is configured or agreed upon to obtain the starting point of DL subband 1. The RB offset here can be used as the size of the guard band. Figure 9 The size of the DL subband in the UE can be configured based on the number of consecutive RBs or can be derived based on the corresponding boundary of the initial DL BWP (or initial UL BWP, or UE-activated DL BWP). For example, the base station and UE agree that the (another) boundary of DL subband 1 is aligned with the boundary of the UE-activated DL BWP, or the initial DL BWP, or the initial UL BWP, thereby avoiding additional signaling of the number of consecutive RBs or the boundary position of the DL subband.

[0128] For DL subband 2:

[0129] The frequency domain location of another DL subband 2 corresponding to DL subband 1 is determined as follows: The base station configures or determines a DL subband (e.g., DL subband 2 corresponding to DL subband 1) based on the following parameters: the starting point of the DL subband and the number of contiguous RBs in the DL subband (or the ending point of the DL subband). The same principle as for determining the frequency domain location of DL subband 1 is used. Alternatively, the base station and the UE may agree that the frequency domain location of DL subband 2 can also be determined based on the following process: The frequency domain location of DL subband 2 is determined based on the UL subband and the guard band. For example, guard band 1 and guard band 2 have the same size in the frequency domain. The starting point of DL subband 2 is derived based on the UL subband boundary and the size of the guard band. The size of DL subband 2 is then derived based on the UE's activated DL BWP (or initial DL BWP or initial UL BWP). For example, the (other) boundary of DL subband 2 is aligned with the boundary of the UE's activated DL BWP (or initial DL BWP or initial UL BWP), thereby avoiding additional signaling of the number of contiguous RBs or the location of the DL subband boundary.

[0130] Since there can be only one DL subband, an example is Figure 10 As shown. The above method may also be applicable. For example, if the frequency domain position of DL subband 2 is determined based on the above method, and the frequency domain size of DL subband 2 is 0, the base station and the UE agree to consider that DL subband 2 does not exist. That is, at this time, the SBFD subband is configured with only one DL subband. It can also be that the base station notifies the UE that the frequency domain structure of the SBFD subband pattern is "DUD" or "DU" or "UD", where D represents the downlink subband and U represents the uplink subband. If the SBFD is notified that the frequency domain structure of the SBFD pattern is "DU" or "UD", the UE no longer needs to further determine DL subband 2. If the SBFD subband pattern is "DU" or "UD", the above method for determining the UL subband and DL subband 1 can be applied to the UL subband and DL subband 2 through the same principle.

[0131] The above configuration method may be applicable to SBFD subbands specific to a UE, to SBFD subbands common to a cell, or may be applied only to configuration of UL subbands or DL subbands.

[0132] The embodiment of the present invention also provides another SBFD subband configuration method, which is applicable to cell-common SBFD subbands and UE-specific SBFD subbands.

[0133] The base station and the UE agree to configure both cell-common UL subbands (and / or DL subbands) and UE-level UL subbands (and / or DL subbands). The base station and the UE respectively configure or associate their respective subcarrier spacing and / or cyclic prefixes for the cell-common UL subbands (and / or DL subbands) and the UE-level UL subbands (and / or DL subbands), and configure or associate their respective channel / signal resource sets (including channel time domain resources, such as PDSCH, PUSCH, PRACH, PUCCH, and SRS), and / or configure or associate the parameters used for transmission / reception (including transmission power parameters, quasi-co-location characteristics, beam parameters, etc.) for the cell-common UL subbands (and / or DL subbands) and the UE-level UL subbands (and / or DL subbands). In this way, the UE-level UL subbands (and / or DL subbands) of different UEs can correspond to different resource sets and parameters. After adopting this UL subband and / or DL subband configuration, the base station and the UE agree that if a UE-level channel or signal needs to be transmitted or received in the UL subband or DL subband, such transmission or reception is performed based on the resource set and parameters corresponding to the UE-level UL subband or DL subband. If a cell-common channel or signal needs to be transmitted or received in the UL subband or DL subband, such transmission or reception is performed based on the resource set and parameters corresponding to the cell-common UL subband or DL subband. In the embodiments of the present invention, " / " represents an "or" relationship.

[0134] In the case where the corresponding resource set and the parameters are not configured / associated with the UL subband / DL subband at the UE level, the base station and the UE agree that if the UE-level channel or signal needs to be transmitted / received in the UL subband or DL subband, the transmission / reception is performed based on the resource set and the parameters corresponding to the cell-common UL subband / DL subband.

[0135] The base station and the UE agree that the frequency domain location of the UE-level UL subband is within the frequency domain range of the cell-common UL subband. The frequency domain location of the UE-level DL subband is within the frequency domain range of the cell-common DL subband. To achieve this goal, the following solutions are provided:

[0136] If the base station wants to configure a cell-common UL subband in a carrier, the base station determines the subcarrier spacing (SCS) configured for the carrier, determines the common RB (CRB) grid for the carrier based on the SCS, and determines the common RB (CRB) grid for the carrier based on CRB0 (note: the CRBgrid determines one or more CRBs in the carrier, the first CRB of CRB0) or Point A (CRB0 and Point A can be converted, for example, the center of the first subcarrier in CRB0 is aligned with Point A).

[0137] The base station configures the available carrier bandwidth of the carrier based on Point A, for example, by an offset (e.g. Figure 11 The offsetToCarrier parameter in the _offsetToCarrier parameter) is used to obtain the starting point of the carrier bandwidth (for example Figure 11 The starting point of the carrier bandwidth in ). Then, based on the starting point, the starting and size of the UL subband are described by parameters, such as Figure 11 The locationAndSubandwidth parameter in the UL subband is used to encode the frequency domain size and position of the UL subband into a numerical value. By parsing the numerical value, the frequency domain size and position can be obtained. This encoding method (generally also called RIV encoding) refers to the usage of locationAndBandwidth in TS38.213 / TS38.331 / TS38.214. Alternatively, the starting point and size of the UL subband can be notified separately based on the CRB or carrier bandwidth starting point. The method for configuring the UL subband here can be a common UL subband for the cell, and can also be used to configure the UE-level UL subband (if necessary).

[0138] After the UL subband is configured, the base station further configures the frequency domain size and position of DL subband 1 and DL subband 2 (or there can be only one DL subband and the other DL subband does not exist) based on the carrier bandwidth starting point. Figure 11 The locationAndSubandwidth_DL#1 parameter in the DL subband is encoded as a numerical value based on the resource indicator value (RIV). The frequency domain size and position can be obtained by parsing this value. The RIV method is defined in TS 38.214 / TS 38.213. Alternatively, the base station notifies the start point and size of the DL subband separately based on the CRB.

[0139] Based on the same principle, the configuration of DL sub-band 2 reuses the method corresponding to DL sub-band 1, which will not be described in detail in this embodiment of the present invention.

[0140] The following configurations can also be considered for DL subband 2. First, the guard bands on both sides of the UL subband are configured to be the same size. The starting point of DL subband 2 is derived based on the UL subband and the guard band. For example, the starting point of DL subband 2 can be derived by offsetting the starting point of the UL subband by the guard band size. It can be assumed that the size of DL subband 2 is the same as that of DL subband 1. Note: If the frequency domain size and position of DL subband 2 are configured first, and then the frequency domain size and position of DL subband 1 are configured, the above method can be reused with adaptive modifications and is not further described here.

[0141] An embodiment of the present invention also provides another efficient method for configuring cell-common SBFD subbands (including UL subbands and / or DL subbands) and UE-level UL subbands and / or DL subbands in one carrier. The configuration signaling corresponding to this method is sent by the base station to the UE, and the signaling is parsed according to the agreed meaning between the base station and the UE. Some predetermined rules are also agreed in advance between the base station and the UE to complete the configuration of the SBFD subband. For example, cell-common UL subbands and / or DL subbands can also be configured based on the following method. In one carrier, the base station configures the size and position of a cell-common SBFD subband (including UL subbands and / or DL subbands) resource based on the above-mentioned carrier bandwidth (note that the SBFD subband can be just a time-frequency resource, and no downlink or uplink transmission direction attributes can be configured. Then, in the time-frequency resource, the resources for DL reception and UL transmission are further determined from the time-frequency resource according to the following method). Specifically, the size and location information of the SBFD subband resources are encoded as a parameter based on the above-mentioned RIV encoding and based on the carrier bandwidth of the carrier (for example, the frequency domain resource size and location of the SBFD subband are configured based on the above-mentioned carrier bandwidth starting point and the size of the carrier bandwidth). The UE receives and parses the parameter to obtain the configured SBFD subband in the carrier. Alternatively, the starting point and size of the SBFD subband are configured based on the CRB or the carrier bandwidth starting point, including the SCS corresponding to the CRB grid. In this way, the frequency domain size and location of the SBFD subband are determined in the carrier. Furthermore, the base station configures the frequency domain resources of a UL subband within the frequency domain range of the configured SBFD subband based on the above-mentioned method for configuring the frequency domain resources of the UL subband (which can also be a method for reusing the frequency domain resources of the configured SBFD subband, for example, the frequency domain resources of the UL subband are configured based on the configured SBFD subband, for example, the frequency domain size and position of the UL subband are also RIV-encoded, and the RIV coding is based on the starting point of the SBFD subband and the size of the SBFD subband. In this way, the signaling overhead is reduced because the SBFD subband bandwidth is smaller than the carrier bandwidth. Of course, if the signaling overhead issue is not considered, the RIV coding corresponding to the frequency domain size and position of the UL subband can also be based on the starting point of the carrier bandwidth). The base station configures (or the base station and the UE agree on) the frequency domain size of the guard band, and the boundary between the guard band and the UL subband is continuous and outside the UL subband. In the configured SBFD subband, the remaining frequency domain resources after removing the frequency domain resources of the UL subband and the guard band can be used for DL reception (for example, as the frequency domain resources of the DL subband). This approach allows for equal or unequal frequency domain sizes of two DL subbands, with reduced signaling overhead and greater flexibility. Note: The frequency domain resources of the DL subbands obtained in this way can be considered either a cell-wide DL subband or a UE-level DL subband.This results in an SBFD subband that includes both UL and DL subbands. This method can configure a cell-common SBFD subband, a cell-common UL subband, and a cell-common DL subband (if necessary). It can also configure UE-level UL and UE-level DL subbands. If the SBFD subband and the UL subband or subbands are designated as cell-common, the base station and UE agree that the SCS and CP corresponding to the UL subband are the same as those of the initial UL BWP (or initial DL BWP).

[0142] If the configured SBFD subbands, UL subbands, and DL subbands are all cell-common, the following method can be used to further derive UE-level UL and DL subbands by combining the cell-common SBFD subbands, UL subbands, and DL subbands. The base station and UE agree that the frequency-domain overlapping resources between the UE's activated DL BWP and the obtained DL subbands will be used for UE-level channel / signal transmission / reception, and these overlapping resources are configured / associated with the SCS and / or CP of the activated DL BWP. These overlapping resources can also be referred to as UE-level DL subbands. Alternatively, the frequency-domain overlapping resources between the UE's activated DL BWP and the frequency-domain resources in the obtained SBFD subbands, excluding the UL subbands and guard bands, can be used for UE-level channel / signal transmission / reception, and these overlapping resources are configured / associated with the SCS and / or CP of the activated DL BWP. These overlapping resources can also be referred to as UE-level DL subbands. Furthermore, the UL resources used for UE-level transmission are derived from the UL subbands in the following manner. For example, the base station and the UE agree that the resources overlapping in the frequency domain between the UL BWP activated by the UE and the UL subband obtained above are used for UE-level UL channel / signal transmission, and the overlapping resources are configured / associated with the SCS and / or CP of the activated UL BWP (or configured / associated with the SCS and / or CP of the DL BWP activated by the UE because the overlapping resources are located in the DL symbol where the DL BWP activated by the UE is located). The overlapping resources can also be referred to as a UE-level UL subband.

[0143] Based on the above configuration process and signaling, the UE receives and parses the relevant configuration signaling to obtain the frequency domain size and position of the UL / DL subbands within the SBFD subband. Note that the above method for configuring cell-common UL / DL subbands can also be used to configure UE-level UL / DL subbands.

[0144] Based on the configured cell-common UL subband and DL subband, a method for configuring UE-level UL subband / DL subband is provided below.

[0145] Method 1

[0146] The frequency domain resources of the DL BWP activated by the UE are used to determine the UL subband resources and / or DL subband resources at the UE level.

[0147] The base station configures an activated DL BWP for the UE. In the frequency domain, the overlapping frequency resources of this DL BWP and the configured cell-common UL subband serve as the UE-level UL subband for the UE. In the frequency domain, the overlapping frequency resources of this DL BWP and the configured cell-common DL subband serve as the UE-level DL subband for the UE. This configuration eliminates signaling overhead for UE-level UL and DL subband configuration.

[0148] The UE-level UL subband can also be configured in the following manner: the base station configures the size and position of the frequency domain based on the starting point (or boundary) of the common UL subband for the cell. For example, the starting RB and number of RBs of the UE-level UL subband are based on the starting point of the common UL self-band for the cell. Alternatively, the base station notifies the UE-level UL subband size and position and performs RIV encoding on the parameters. The RIV encoding is based on the size / starting point of the common UL subband for the cell, rather than the size / starting point of the SBFD subband described above, which can reduce signaling overhead.

[0149] A specific example of method 1 is Figure 11 shown.

[0150] Method 2

[0151] The frequency domain resources of the DL BWP activated by the UE are used to determine the resources of the DL subband at the UE level, and the frequency domain resources of the ULBWP activated by the UE are used to determine the resources of the UL subband at the UE level.

[0152] The base station configures an activated UL BWP for the UE. In the frequency domain, the frequency resources that overlap with the configured cell-common UL subband are used as the UE-level UL subband for the UE. If the UE's UL BWP and the cell-common UL subband do not overlap in the frequency domain, the base station and UE agree that the UE's UL transmission will be based on the UL BWP without using the cell-common UL subband. Alternatively, the base station and UE agree that the UE is not configured with a UE-level UL subband, but that the UE's UL transmission can use the cell-common UL subband. In this manner, the configuration of UE-level UL and DL subbands does not involve signaling overhead.

[0153] In the frequency domain, the frequency resources where the DL BWP overlaps with the configured cell-common DL subband are used as the UE-level DL subband for the UE. If the UE's DL BWP and the cell-common DL subband do not overlap in the frequency domain, the base station and UE agree that the UE's DL reception is performed based on the DL BWP without using the cell-common DL subband. Alternatively, the base station and UE agree that the UE is not configured with a UE-level DL subband, but that the UE's DL reception can use the cell-common DL subband. In this manner, there is no signaling overhead for the configuration of UE-level UL and DL subbands.

[0154] The UE-level UL subband can also be configured in the following manner: the base station configures the size and position of the frequency domain based on the starting point (or boundary) of the common UL subband for the cell. For example, the starting RB and number of RBs of the UE-level UL subband are based on the starting point of the common UL self-band for the cell. Alternatively, the base station notifies the UE-level UL subband size and position and performs RIV encoding on the parameters. The RIV encoding is based on the size / starting point of the common UL subband for the cell, rather than the size / starting point of the SBFD subband described above, which can reduce signaling overhead.

[0155] A specific example of method 2 is Figure 12 shown.

[0156] Method 3

[0157] Directly configure the frequency domain resources of the UE-level UL subband, and require that the configured UE-level UL subband frequency domain resources be within the frequency domain resource range of the cell-common UL subband. Optionally, use the frequency domain resources of the UE-activated DL BWP to determine the UE-level DL subband resources.

[0158] The base station configures a UE-level UL subband for the UE based on the cell-common UL subband. For example, in the frequency domain, the UE-level UL subband is configured based on the starting point and size of the cell-common UL subband. For example, within the cell-common UL subband, the size and position of the UE-level UL subband are configured based on the starting point and bandwidth of the cell-common UL subband through the aforementioned RIV encoding. Alternatively, the starting RB (relative to the starting point of the cell-common UL subband) and the number of consecutive RBs of the UE-level UL subband can be directly configured.

[0159] In the frequency domain, the frequency resources where the DL BWP overlaps with the configured cell-common DL subband are used as the UE-level DL subband for the UE. If the UE's DL BWP and the cell-common DL subband do not overlap in the frequency domain, the base station and UE agree that the UE's DL reception is performed based on the DL BWP without using the cell-common DL subband. Alternatively, the base station and UE agree that the UE is not configured with a UE-level DL subband, but that the UE's DL reception can use the cell-common DL subband. In this manner, there is no signaling overhead for the configuration of UE-level UL and DL subbands.

[0160] The UE-level UL subband can also be configured in the following manner: the base station configures the size and position of the frequency domain based on the starting point (or boundary) of the common UL subband for the cell. For example, the starting RB and number of RBs of the UE-level UL subband are based on the starting point of the common UL self-band for the cell. Alternatively, the base station notifies the UE-level UL subband size and position and performs RIV encoding on the parameters. The RIV encoding is based on the size / starting point of the common UL subband for the cell, rather than the size / starting point of the SBFD subband described above, which can reduce signaling overhead.

[0161] A specific example of method 3 is Figure 13 shown.

[0162] In addition to the above-mentioned clear definition / configuration of the size and position of the UL subband / DL subband at the UE level, the base station and the UE agree that they can also support unclear definition / configuration of the size and position of the UL subband / DL subband at the UE level, but still configure / associate the corresponding subcarrier spacing and / or cyclic prefix for the transmission ( / reception) of the UE-level channel / signal, and configure or associate the respective resource sets (including the time domain resources of the channel, such as PDSCH, CORESET#0, PDCCH, PUSCH, PRACH, PUCCH and SRS, etc.) and / or configure / associate the respective parameters used to perform transmission / reception for the transmission / reception of the UE-level channel / signal (including transmission power parameters, quasi-co-location characteristics, beam parameters, etc.).

[0163] For example, the base station and the UE agree that if the transmission / reception of a UE-level channel / signal is configured / determined to be in a cell-common UL subband / DL subband, the base station / UE performs the transmission / reception based on at least one of the following:

[0164] Based on the subcarrier spacing and / or cyclic prefix associated with the channel / signal corresponding to the transmission / reception,

[0165] Based on the resource set associated with the channel / signal corresponding to the transmission / reception,

[0166] Based on or based on the parameters associated with the channel / signal corresponding to the transmission / reception (including transmission power parameters, quasi-co-location characteristics, beam parameters, etc.).

[0167] For example, the base station and the UE agree that if the transmission / reception of a cell-common channel / signal (referring to a channel / signal transmitted / received by multiple UEs, such as PRACH, PDCCH associated with CORESET#0, SSB, SIB, etc.) is configured / determined in the cell-common UL subband / DL subband, the base station / UE performs the transmission / reception based on at least one of the following:

[0168] Based on the subcarrier spacing and / or cyclic prefix associated with the common UL subband / DL subband (channel / signal in it) of the cell,

[0169] Based on the resource set associated with the common UL subband / DL subband (channel / signal in it) of the cell,

[0170] Parameters associated with the common UL sub-band / DL sub-band (channels / signals therein) of the cell (including transmission power parameters, quasi-co-location characteristics, beam parameters, etc.).

[0171] This approach does not require configuration of UE-level UL subbands / DL subbands, thereby reducing signaling overhead.

[0172] How do the base station and UE determine whether the transmission / reception of the channel / signal is cell-common or UE-level? If the transmission / reception corresponding to a channel / signal is configured or performed for at least two UEs, the transmission / reception corresponding to the channel is considered cell-common; otherwise, the transmission / reception corresponding to the channel is considered UE-level.

[0173] How do the base station and UE determine whether the transmission / reception of the channel / signal is in the resources of the SBFD subband? If the base station and UE determine the time-frequency resources for the transmission / reception corresponding to a channel / signal, and determine the time-frequency resources of the SBFD subband / determine the time-frequency resources of the SBFD subband at the UE level, if the time-frequency resources for the transmission / reception of the channel / signal fall within the time-frequency resources of the corresponding UL subband / DL subband, then the base station and UE determine that the transmission / reception of the channel / signal is in the resources of the SBFD subband; otherwise, the transmission / reception of the channel / signal is not in the resources of the SBFD subband. Note: If the transmission / reception is at the UE level, the UL subband / DL subband here refers to the UL subband / DL subband at the UE level. If the transmission / reception is at the cell level, then the UL subband / DL subband here refers to the UL subband / DL subband common to the cell.

[0174] The frequency domain resources of the SBFD subband can be configured based on the aforementioned method. The time domain resources of the SBFD subband can be configured based on slots / OFDM symbols.

[0175] In the prior art, SFBD subbands can be configured in flexible symbols (F symbols), and these F symbols can be configured as either DL symbols or UL symbols for DL reception or UL transmission, respectively. For simplicity, the following rules are provided for UL subband configuration after F symbols are configured as SBFD subbands or within SBFD symbols to simplify configuration and implementation complexity.

[0176] The base station and UE agree that if the SBFD subband is configured in the F symbol configured by TDD-UL-DL-ConfigCommon signaling, one of the following operations is supported:

[0177] The F symbol can be configured as a DL symbol of UE1 by dedicated signaling of UE1;

[0178] After the F symbol is converted into a DL symbol of UE1, the original SBFD subband configuration in the F symbol remains unchanged from the perspective of UE1. For example, the frequency domain resources of the DL subband and the UL subband remain unchanged.

[0179] After the F symbol is converted into a DL symbol of UE1, the original SBFD subband configuration in the F symbol is cancelled from the perspective of UE1.

[0180] After converting the F symbols into DL symbols, UE1 still uses the F symbols for UL transmission only in the UL subband resources, and uses the F symbols for DL transmission only in the DL subband resources.

[0181] The F symbol can be configured as a UL symbol of UE1 by the dedicated signaling of UE1;

[0182] After the F symbol is converted to a UL symbol for UE1, the original SBFD subband configuration within the F symbol remains unchanged from the perspective of UE1. For example, the frequency domain resources of the DL and UL subbands remain unchanged. Note: This results in the configuration of SBFD subbands within UE1's UL symbol.

[0183] After the F symbol is converted into the UL symbol of UE1, the original SBFD subband configuration in the F symbol is cancelled from the perspective of UE1.

[0184] After converting the F symbols into UL symbols, UE1 still uses the F symbols for UL transmission only in the UL subband resources, and uses the F symbols for DL transmission only in the DL subband resources.

[0185] The F symbol is prohibited from being reconfigured as a UL symbol or a DL symbol of UE1 by the dedicated signaling of UE1;

[0186] If the F symbol is modified into a DL symbol or a UL symbol by the DCI signaling scrambled by the SFI-RNTI, the UE1 considers that the F symbol configured with the SBFD subband is not applicable to the DCI signaling.

[0187] F symbols configured with SBFD subbands are prohibited from being modified into DL symbols or UL symbols for DCI signaling scrambled by SFI-RNTI.

[0188] The UE does not expect the F symbol to be converted into a UL symbol based on UE1-specific or public signaling.

[0189] If an F symbol is converted into a UL symbol for UE1-specific or public signaling, UE1 does not expect the F symbol to be configured with an SBFD subband.

[0190] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0191] This embodiment also provides an uplink frequency domain resource configuration device for implementing the above-mentioned embodiments and preferred implementations. Details already described are omitted for clarity. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0192] Figure 14 is a structural block diagram of an uplink frequency domain resource determination apparatus according to an embodiment of the present invention, such as Figure 14 As shown, the device is located on the terminal and includes:

[0193] A configuration module 141 is configured to configure a first uplink frequency domain resource in a downlink DL symbol;

[0194] The transmission module 142 is configured to use the first uplink frequency domain resource for uplink transmission in a random access process of a terminal UE.

[0195] Figure 15FIG. 1 is a structural block diagram of an apparatus for determining uplink frequency domain resources according to another embodiment of the present invention. Figure 15 As shown, the device is located on the base station and includes:

[0196] A second determining module 151 is configured to determine a first uplink frequency domain resource in a downlink DL symbol;

[0197] The receiving module 152 is configured to receive, in the first uplink frequency domain resource, uplink transmission data sent by the UE during a random access process.

[0198] It should be noted that the above modules can be implemented through software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0199] An embodiment of the present invention further provides a computer-readable storage medium, in which a computer program is stored. The computer program is configured to execute the steps of any one of the above method embodiments when running.

[0200] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.

[0201] An embodiment of the present invention further provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0202] In an exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0203] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail here.

[0204] Obviously, those skilled in the art will appreciate that the various modules or steps of the present invention described above can be implemented using a general-purpose computing device, can be centralized on a single computing device, or can be distributed across a network of multiple computing devices. They can be implemented using program code executable by the computing device, and thus, can be stored in a storage device and executed by the computing device. In some cases, the steps shown or described herein can be performed in a different order than that shown, or can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0205] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for determining uplink frequency domain resources, characterized in that: include: Determining a first uplink frequency domain resource in a downlink DL symbol; Uplink transmission of a random access procedure for the UE is performed in the first uplink frequency domain resources.

2. The method according to claim 1, characterized in that in, The UE status includes: idle state and inactive state.

3. The method according to claim 1, characterized in that Determining a first uplink frequency domain resource in a downlink DL symbol includes: Based on a first UL subband in the DL symbol, a plurality of consecutive resource blocks (RBs) are configured in the DL symbol, wherein the RBs overlap with the first UL subband in the DL symbol in the frequency domain.

4. The method according to claim 1, characterized in that In response to the first uplink frequency domain resources being consecutive RBs, determining the first uplink frequency domain resources in a downlink DL symbol includes: The RBs are determined according to a starting resource block of the first UL subband or an ending resource block of the first UL subband in the DL symbol and in combination with a first offset; wherein the first offset is predefined or notified through base station signaling.

5. The method according to claim 1, characterized in that in, In response to the first uplink frequency domain resources being continuous RBs, positions of the RBs in the time domain are the same as a period and / or position of the first UL subband in the time domain.

6. The method according to claim 1, characterized in that in, In response to the first uplink frequency domain resources being continuous RBs, the number of the RBs does not exceed the number of resource blocks corresponding to the first initial uplink partial bandwidth UL BWP in the frequency domain, and the first initial UL BWP is configured for UL transmission in a UL symbol.

7. The method according to claim 1, characterized in that In response to the first uplink frequency-domain resources being consecutive RBs, determining the first uplink frequency-domain resources in the DL symbol includes one of the following: Determine a plurality of resource blocks inwardly based on one side of the first UL subband and use them as the RBs; A plurality of resource blocks in the center of the first UL subband are determined as the RBs.

8. The method according to claim 1, characterized in that in, The first UL subband or RBs overlaps with the downlink part bandwidth DL BWP in the DL symbol in the frequency domain.

9. The method according to claim 1, characterized in that In the case where RBs overlap with a DL BWP in the DL symbol in the frequency domain, the method further includes one of the following: Setting the RBs and the DL BWP to time division multiplexing; The UL transmission in the RBs and the DL reception in the initial DL BWP are set to different usage priorities.

10. The method according to claim 1, characterized in that Configuring a first uplink frequency domain resource in a downlink DL symbol includes: A second initial UL BWP is configured in the DL symbol as the first uplink frequency domain resource, wherein the second initial UL BWP has the same frequency domain size as the first initial UL BWP in the uplink UL symbol.

11. The method according to claim 1, wherein in, In response to configuring a second initial UL BWP in the DL symbol as the first uplink frequency domain resource, the second initial UL BWP has the same period and / or position in the time domain as the first UL subband in the DL symbol.

12. The method according to claim 1, characterized in that in, In response to configuring a second initial UL BWP in the DL symbol as the first uplink frequency domain resource, the second initial UL BWP overlaps with the first UL subband in the frequency domain.

13. The method according to claim 1, wherein Configuring a first uplink frequency domain resource in a downlink DL symbol includes: configuring the first initial UL BWP in the DL symbol, wherein the first initial UL BWP in the DL symbol is identical to the first initial UL BWP in the UL symbol in the frequency domain; or, In response to the DL symbol being configured with the first UL subband, the first initial UL BWP is configured to be valid in the DL symbol.

14. The method according to claim 1, wherein Configuring a first uplink frequency domain resource in a downlink DL symbol includes: A second UL subband is configured in the DL symbol as the first uplink frequency domain resource, wherein in the frequency domain, the second UL subband overlaps with an initial DL BWP in the DL symbol.

15. The method according to claim 1, wherein in, In response to configuring a second UL subband in the DL symbol as the first uplink frequency domain resource, in the time domain, the second UL subband has the same period and / or position as the first UL subband in the DL symbol.

16. The method according to claim 1, wherein in, In response to configuring the second UL subband in the DL symbol as the first uplink frequency domain resource, the frequency domain resources between the first UL subband and the second UL subband are continuous.

17. The method according to claim 1, wherein in, In response to configuring a second UL subband in the DL symbol as the first uplink frequency domain resource, the frequency domain resource of the second UL subband is located within the frequency domain resource range of the first initial UL BWP in the uplink UL symbol.

18. A method for determining uplink frequency domain resources, characterized in that: Applied to base stations, including: Determining a first uplink frequency domain resource in a downlink DL symbol; Uplink transmission data sent during the random access process of the UE is received in the first uplink frequency domain resource.

19. The method according to claim 18, characterized in that in, The UE status includes: idle state and inactive state.

20. The method according to claim 18, wherein Determining a first uplink frequency domain resource in a downlink DL symbol includes: Based on a first UL subband in the DL symbol, a plurality of consecutive resource blocks (RBs) are configured in the DL symbol, wherein the RBs overlap with the first UL subband in the DL symbol in the frequency domain.

21. The method according to claim 18, wherein Configuring a first uplink frequency domain resource in a downlink DL symbol includes: A second initial UL BWP is configured in the DL symbol as the first uplink frequency domain resource, wherein the second initial UL BWP has the same frequency domain size as the first initial UL BWP in the uplink UL symbol.

22. The method according to claim 18, wherein Configuring a first uplink frequency domain resource in a downlink DL symbol includes: configuring a first initial UL BWP in the DL symbol, wherein the first initial UL BWP in the DL symbol is identical to the first initial UL BWP in the UL symbol in the frequency domain; or, In response to the DL symbol being configured with the first UL subband, the first initial UL BWP is configured as valid in the DL symbol.

23. The method according to claim 18, wherein Configuring a first uplink frequency domain resource in a downlink DL symbol includes: A second UL subband is configured in the DL symbol as the first uplink frequency domain resource, wherein in the frequency domain, the second UL subband overlaps with an initial DL BWP in the DL symbol.

24. An uplink frequency domain resource determination device, characterized in that: Located on the terminal, including: A first determining module, configured to determine a first uplink frequency domain resource in a downlink DL symbol; A transmission module is used to perform uplink transmission of a random access process for the UE in the first uplink frequency domain resources.

25. An uplink frequency domain resource determination device, characterized in that: Located on the base station, including: A second determining module, configured to determine a first uplink frequency domain resource in a downlink DL symbol; A receiving module is used to receive uplink transmission data sent by the UE during the random access process in the first uplink frequency domain resource.

26. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the computer program implements the steps of the method described in any one of claims 1 to 17, or implements the steps of the method described in any one of claims 18 to 23.

27. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the processor implements the steps of the method described in any one of claims 1 to 17, or implements the steps of the method described in any one of claims 18 to 23.

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