Method for VRB-TO-PRB interleaver, measurement report and sub-band segmentation for SBFD operation and related equipment

Abstract

The present invention provides an interleaving method and a related device for mapping a virtual resource block to a physical resource block (VRB-to-PRB) during a sub-band full duplex (SBFD) period, and a method for mapping a virtual resource block to a physical resource block (VRB-to-PRB) during the SBFD period of the sub-band full duplex (SBFD) period of the sub-band full duplex (SBFD) period of the sub-band full duplex (SBFD) period of the sub-band full duplex (SBFD) period of the virtual resource block to the physical resource block (VRB-to-PRB). In one embodiment, the method includes performing a VRB-to-PRB interleaving during the SBFD to interleave resource blocks (RBs) and map a VRB beam to a PRB beam in a first DL frequency domain and a second DL frequency domain. By the method, the VRB-to-PRB interleaving is enhanced in the SBFD operation, thereby being able to benefit from less frequency selective fading.

Description

TECHNICAL FIELD

[0001] The present application relates to wireless communication technology, and more specifically, to enhanced solutions for SBFD operation, including a method of VRB-TO-PRB interleaver, measurement reporting and sub-band segmentation for SBFD operation, and related devices such as user equipment (UE) and transmission reception points (TRPs) or base stations (BS) in the network. BACKGROUND

[0002] Communication systems and networks have evolved into broadband and mobile systems. In cellular wireless communication systems developed by the Third Generation Partnership Project (3GPP), user equipment (UE) is connected to a radio access network (RAN) over a wireless link. The RAN comprises a set of base stations (BS) that provide the wireless link for UEs located in the cell of the base station and interfaces with a core network (CN) that provides overall network control. As understood, the RAN and CN each perform their respective functions in the overall network. The 3GPP has developed a so-called Long Term Evolution (LTE) system, i.e. an evolved Universal Mobile Telecommunications System Terrestrial Radio Access Network (E-UTRAN), for mobile access networks, where one or more macro cells are supported by base stations called eNodeBs or eNBs (evolved Node Bs). From LTE evolution, a so-called 5G or New Radio (NR) system, where one or more cells are supported by base stations called gNB.

[0003] The 5G NR standard supports a variety of different services, each with very different requirements. These services include enhanced mobile broadband (eMBB) for high data rate transmissions, ultra-reliable low latency communication (URLLC) for devices that require low latency and high link reliability, and massive machine type communication (mMTC) for supporting a large number of low power devices that require long life and efficient energy.

[0004] The explosive growth of data traffic due to the diversification of use cases and exponential growth in the number of UEs in the next generation wireless communication system results in a high requirement for spectral efficiency. To meet the high requirement for spectral efficiency, time division duplex (TDD) systems are widely adopted in commercial new radio (NR) deployments. TDD systems use a single spectrum (frequency band) for downlink (DL) and uplink (UL) in different time slots, and more efficiently utilize the available spectrum compared to frequency division duplex (FDD) systems.

[0005] In traditional TDD systems, time-domain resources are allocated among downlink (DL), uplink (UL), and flexible slots / symbols, where flexible slots / symbols can be used for DL, UL, or as a protection period for DL-UL handover. Allocating limited time for the uplink in traditional TDD leads to reduced coverage, increased latency, and reduced capacity. To enhance the constraints of traditional TDD operation, the 3GPP RAN Working Group approved a research project in Rel-18 focusing on the feasibility of simultaneous DL and UL within traditional TDD bands, i.e., full-duplex, or more specifically, sub-band non-overlapping full-duplex operation. In sub-band full-duplex (SBFD) operation, the gNB operates in full-duplex, meaning simultaneous DL and UL transmissions occur only at the gNB, while the UE operates in half-duplex. This research project has specified objectives regarding sub-band non-overlapping full-duplex and dynamic / flexible TDD operation. Summary of the Invention

[0006] In a first aspect, one embodiment of the present invention provides a method for a Virtual Resource Block to Physical Resource Block (VRB-TO-PRB) interleaver during Sub-Band Full-Duplex (SBFD), the method comprising: performing a VRB-TO-PRB interleaver to interleave resource blocks (RBs) and mapping VRB bundles to PRB bundles in the Bandwidth Part (BWP) during SBFD.

[0007] In a second aspect, one embodiment of the present invention provides a method for a Virtual Resource Block to Physical Resource Block (VRB-TO-PRB) interleaver during Sub-Band Full-Duplex (SBFD), the method comprising: receiving downlink (DL) signals on PRB bundles in a first DL frequency domain and a second DL frequency domain during SBFD, wherein resource blocks (RBs) are interleaved and VRB bundles are mapped to PRB bundles in the first DL frequency domain and the second DL frequency domain during SBFD.

[0008] In a third aspect, one embodiment of the present invention provides a method for receiving a measurement report of sub-band full-duplex (SBFD) operation, the method comprising: notifying a user equipment (UE) that it has an SBFD or non-SBFD specific antenna port mode, wherein the SBFD or non-SBFD specific antenna port mode respectively indicates the antenna port distribution of downlink (DL) transmission during SBFD or non-SBFD.

[0009] In a fourth aspect, one embodiment of the present invention provides a measurement reporting method for sub-band full-duplex (SBFD) operation, the method comprising: being notified of having an SBFD or non-SBFD specific antenna port mode, wherein the SBFD or non-SBFD specific antenna port mode respectively indicates the antenna port distribution of downlink (DL) transmission during SBFD or non-SBFD.

[0010] In a fifth aspect, one embodiment of the present invention provides a subband segmentation method for subband full-duplex (SBFD) operation, the method comprising: dividing subbands in a first DL frequency domain and a second DL frequency domain during SBFD according to default rules.

[0011] In a sixth aspect, one embodiment of the present invention provides a subband segmentation method for subband full-duplex (SBFD) operation, the method comprising: receiving or transmitting signals using subbands divided in a first DL frequency domain and a second DL frequency domain during SBFD according to default rules.

[0012] In a seventh aspect, one embodiment of the invention provides a TRP including a processor and a transmitter, wherein the processor is configured to invoke and execute program instructions stored in memory to perform any of the methods of the first, third, and fifth aspects.

[0013] In an eighth aspect, one embodiment of the invention provides a UE including a processor and a transmitter, wherein the processor is configured to invoke and execute program instructions stored in a memory to perform any of the methods of the second, fourth, and sixth aspects.

[0014] In a ninth aspect, one embodiment of the invention provides a calculator-readable storage medium for storing a calculator program that enables the calculator to perform any of the methods in the first to sixth aspects.

[0015] In a tenth aspect, one embodiment of the invention provides a calculator program product, including calculator program instructions that enable the calculator to perform any of the methods in the first to sixth aspects.

[0016] In an eleventh aspect, one embodiment of the present invention provides a calculator program that, when run on a calculator, enables the calculator to perform any of the methods in the first to sixth aspects. Attached Figure Description

[0017] To more clearly illustrate embodiments of the present invention or related technologies, the illustrations described in the embodiments will be briefly described below. Obviously, these illustrations are merely some embodiments of the present invention, and those skilled in the art can obtain other illustrations based on these illustrations without any prior payment.

[0018] Figure 1 A schematic diagram illustrating an example of a VRB-PRB interleaver with L = 2 in the prior art is provided.

[0019] Figure 2 A schematic diagram of an existing VRB to PRB interleaver that is not applicable to SBFD operation is shown.

[0020] Figure 3 The diagram illustrates a frequency resource partitioning example of SBFD operation in certain embodiments of the present invention.

[0021] Figure 4 A schematic block diagram of a communication network system according to an embodiment of the present invention is provided.

[0022] Figure 5 A schematic diagram illustrating the TRP (or gNB) and the radio protocol architecture within the UE is provided.

[0023] Figure 6 A schematic diagram of a gNB further comprising centralized units (CUs) and multiple distributed units (DUs) is provided.

[0024] Figure 7 A flowchart illustrating a method for VRB to PRB interleaver during SBFD according to certain embodiments of the present invention is provided.

[0025] Figure 8 A schematic diagram illustrating an example of the VRB to PRB interleaver result according to certain embodiments of the present invention is provided.

[0026] Figure 9 A schematic diagram illustrating another example of VRB to PRB interleaver results according to certain embodiments of the present invention is provided.

[0027] Figure 10 A schematic diagram illustrating yet another example of the VRB to PRB interleaver result according to certain embodiments of the present invention.

[0028] Figure 11 A flowchart illustrating a method for receiving SBFD operation measurement reports according to certain embodiments of the present invention is provided.

[0029] Figure 12 Schematic diagrams illustrating examples of non-SBFD and SBFD based on antenna port modes according to certain embodiments of the present invention.

[0030] Figure 13A schematic diagram illustrating examples of CSI measurement and reporting procedures for non-SBFD and SBFD operations according to certain embodiments of the present invention is provided.

[0031] Figure 14 A schematic diagram illustrating examples of different antenna port modes during different SBFDs according to certain embodiments of the present invention.

[0032] Figure 15 This diagram illustrates the application time of the indicator antenna port mode that does not require confirmation of activation information in SBFD operation according to certain embodiments of the present invention.

[0033] Figure 16 This diagram illustrates the application time of the indicator antenna port mode, which indicates the activation information that needs to be confirmed during SBFD operation according to certain embodiments of the present invention.

[0034] Figure 17 A flowchart illustrating a subband segmentation method for SBFD operation according to certain embodiments of the present invention is provided.

[0035] Figure 18 A schematic diagram illustrating a subband segmentation example of SBFD operation according to certain embodiments of the present invention is provided.

[0036] Figure 19 A schematic diagram illustrating another example of subband segmentation of SBFD operation according to certain embodiments of the present invention is provided.

[0037] Figure 20 A schematic diagram illustrating yet another example of subband segmentation of SBFD operation according to certain embodiments of the present invention. Detailed Implementation

[0038] The embodiments of the present invention will be described in detail with reference to the accompanying drawings, the technical content, structural features, implementation objectives, and effects therein. It should be particularly noted that the terminology used in the embodiments of the present invention is only used to describe the purpose of specific embodiments and should not be considered as a limitation of the present invention.

[0039] The embodiments disclosed herein will be described in detail with reference to the accompanying drawings, outlining technical aspects, structural features, achieved objectives, and effects. Specifically, the terminology used in the embodiments of this invention is for the purpose of describing a particular embodiment only and is not intended to limit the invention.

[0040] A combination of “at least one A, B or C”, “one or more A, B or C”, “at least one A, B and C”, “one or more A, B and C” or “A, B and / or C” can be only A, only B, only C, A and B, A and C, B and C, or A, B and C, where any combination may contain one or more members of A, B or C.

[0041] In Rel-15 / 16 / 17, the VRB-to-PRB interleaver is a method to resist frequency-selective fading of the PDSCH transmission. For a BWP, Where L represents the number of RBs within the RB bundle, and the value of L is 2 or 4. The number of RBs within the RB bundle should be consecutive. The size of the first RB bundle (number 0) is... The last RB bundle (num. The size of ) is ,if Otherwise, the size is L. The remaining RB bundles are of size L. VRB bundles numbered j∈{0,1,…,NBundle-1} are mapped to PRB bundles as follows: The VRB bundle numbered NBundle-1 is mapped to the PRB bundle numbered NBundle-1.

[0042] The VRB bundle numbered j∈{0,1,…,NBundle-2} is mapped to the PRB bundle numbered f(j) according to the following formula.

[0043] f(j) = rC+c, j = cR+r, r = 0,1,…,R-1, c = 0,1,…,C-1, R = 2 for L =2, .

[0044] Figure 1 An example with L = 2 is shown.

[0045] For SBFD operations, there are not only DL frequency resources but also UL frequency resources during SBFD. When performing a VRB-to-PRB interleaver, some DL RBs will be located in the UL frequency domain, such as... Figure 2 As shown. In this case, the DL RB cannot be transmitted, otherwise it will interfere with the UL transmission. Therefore, the VRB to PRB interleaver should be enhanced for SBFD operation.

[0046] In Rel-15 / 16 / 17, the UE measures the Channel State Information Reference Signal (CSI-RS) and obtains Channel State Information (CSI), including the Rank Indicator (RI), Precoding Matrix Indicator (PMI), and Channel Quality Indicator (CQI). The UE then reports the CSI to the base station. The base station transmits the Physical Downlink Shared Channel (PDSCH) to the UE based on the PMI in the CSI. The PMI is significantly correlated with the antenna port pattern on the base station.

[0047] Assume the base station has N antenna ports and the UE has M antennas. The base station, according to... y CSI-RS = H CSI-RS xCSI-RS + N The CSI-RS with N ports is transmitted to the UE, where H CSI-RS It is the channel matrix of CSI-RS, H CSI-RS The size is M*N. The UE can be based on H. CSI-RS Inferring the channel matrix H of PDSCH PDSCH The UE then infers the right singular matrix of the HPDSCH and selects the closest matrix P corresponding to RI in the codebook. The size of P is N*RI. The UE then reports the index (PMI) of P. Assuming the base station uses the reported matrix, the base station... y PDSCH = H PDSCH Px PDSCH + N The precoded PDSCH is transmitted to the UE. Note that the precoded PDSCH transmitted by the base station is Px in this formula. PDSCH Its size is N*1. Therefore, regardless of the RI, the precoding matrix P determines that each N port on the base station will transmit signals simultaneously, which is part of the precoded PDSCH, and the number of ports with the precoded PDSCH is the same as that of CSI-RS. Codebooks are typically defined as a set of oversampled DFT vectors, and can be written as .

[0048] Where N is the number of antenna ports on the base station, and O is the number of oversamples between two antenna ports. The total number of DFT vectors in the set is N*O. The UE selects the index of one or more DFT vectors to report. One of the DFT vectors should use... This is used to indicate the antenna port number and oversampling. Therefore, the reported index is related to the number of antenna ports and oversampling. The above discussion only considers one-dimensional antenna port patterns. In practice, antenna port patterns are two-dimensional with dual polarization, so different antenna port patterns should be considered.

[0049] During the DL phase of a traditional TDD configuration, the base station uses all configured antenna ports for PDSCH transmission. For SBFD operation at the base station, both DL and UL frequency resources are available during SBFD. This means the base station will transmit and receive signals simultaneously during SBFD. The non-SBFD phase is the same as the traditional TDD configuration. Due to the UL subband during SBFD, the base station should use some antenna ports to receive UL signals. The base station can only use the remaining antenna ports to transmit DL signals. Therefore, the antenna port pattern changes from the non-SBFD phase to the SBFD phase. This change will significantly affect PMI selection and reporting.

[0050] In Rel-15 / 16 / 17, the UE is configured via RRC signaling to be one of two possible subband sizes for CSI reporting. Subband is defined as... The number of consecutive PRBs, and according to Table 1 below, depends on the total number of PRBs in the BWP. The size of the first sub-band is determined by... Given. The size of the last sub-band is determined by... Given, if , then ,if .

[0051] Table 1. Configurable Subband Sizes

[0052] When performing SBFD (Side-by-Side Frequency Divide) operations at the base station, both downlink and uplink frequency resources are available during the SBFD period. Uplink frequency resources significantly impact subband allocation during SBFD. Therefore, subband allocation should be strengthened to support SBFD operations.

[0053] In addition to the traditional BWP allocations defined by Rel-15 / 16 / 17, a new frequency domain allocation will be defined within the traditional BWP to support SBFD operation in the radio system. A set of signaling can be added that allows the UE to distinguish the transmission direction of the configured frequency domain during SBFD. Therefore, a specific frequency domain allocation type for SBFD can be used and communicated to the UE.

[0054]

[0055] This invention relates to a wireless communication system. Specifically, the concept focuses on enhancements to the VRB-PRB interleaver, (CSI-related) antenna port mode, and (CSI) subband division for subband full-duplex (SBFD) operation. Through this disclosure, SBFD operation can benefit from less frequency-selective fading and more accurate CSI feedback.

[0056] The present invention can be summarized as follows, but is not limited thereto: 1. To enhance the VRB-PRB interleaver during SBFD, the following embodiments are proposed.

[0057] In one embodiment, the VRBs in the first and second downlink frequency domains are respectively arranged into VRB bundles. The VRB bundles in the first and second downlink frequency domains are respectively subjected to conventional interleaving and then mapped to PRB bundles.

[0058] In another embodiment, the VRBs in the first and second downlink frequency domains are respectively arranged into VRB bundles. The VRB bundles in the first and second downlink frequency domains that are closest to the uplink / guard frequency domain are directly mapped to the PRB bundles in the first and second downlink frequency domains. The remaining VRB bundles in the first and second downlink frequency domains are connected together to perform a conventional interleaver and then mapped to the PRB bundles.

[0059] In another embodiment, VRBs in the first and second downlink frequency domains are respectively arranged into VRB bundles. First, the number of VRBs in the VRB bundles in the first and second frequency domains is estimated. If the number of VRBs is less than a configured value, the VRB bundles are directly mapped to PRB bundles. If the number of VRBs is equal to the configured value, the VRB bundles undergo a conventional interleaver and are then mapped to PRB bundles.

[0060] In another embodiment, VRBs in the first and second downlink frequency domains are co-arranged into a VRB bundle. First, it is estimated whether one VRB in the VRB bundle is located in the uplink / guard frequency domain, and then it is estimated whether all VRBs in the VRB bundle are located in the downlink frequency domain. A VRB bundle with one VRB located in the uplink / guard frequency domain is directly mapped to a PRB bundle. A VRB bundle with all VRBs located in the downlink frequency domain undergoes a conventional interleaver operation and is then mapped to a PRB bundle.

[0061] 2. To enhance the antenna port configuration for SBFD operation, the following embodiments are proposed.

[0062] In one embodiment, the base station sends an SBFD-specific antenna port configuration (e.g., an antenna port mode) to the UE via RRC signaling. The UE receives a reference signal and performs measurements during SBFD according to the configuration. The UE then feeds back the measurement results based on the configuration.

[0063] In another embodiment, the base station sends SBFD-specific antenna port configurations (e.g., a list of antenna port modes) to the UE via RRC signaling, and then sends activation information to the UE via MAC CE or DCI. The UE receives a reference signal and performs measurements during SBFD based on the activation information. The UE then feeds back the measurement results based on the activation information.

[0064] 3. To enhance the sub-band division of CSI reports for SBFD operations, the following embodiments are proposed.

[0065] In one embodiment, the size of the first and second downlink frequency domains determines the size of the sub-bands in the first and second downlink frequency domains, respectively.

[0066] In another embodiment, the sum of the sizes of the first and second downlink frequency domains determines the size of the sub-band in the first and second downlink frequency domains.

[0067] In another embodiment, the size of the BWP determines the size of the sub-band in the first and second downlink frequency domains.

[0068] Figure 4 This description illustrates, in some embodiments according to an embodiment of the present invention, a user equipment (UE) 10, a first transmit / receive point (TRP) or base station 20, and a second TRP or base station 30 for a communication network system. The communication network system includes one or more UEs 10, a first TRP (or base station) 20, and a second TRP (or base station) 30. The one or more UEs 10 may include a memory 12, a transceiver 13, and a processor 11 coupled to the memory 12 and the transceiver 13. The first TRP 20 may include a memory 22, a transceiver 23, and a processor 21 coupled to the memory 22 and the transceiver 23. The second TRP 30 may include a memory 32, a transceiver 33, and a processor 31 coupled to the memory 32 and the transceiver 33. The processor 11, 21, or 31 may be configured to implement the proposed functions, procedures, and / or methods described herein. A layer of a wireless interface protocol may be implemented in the processor 11, 21, or 31. Memory 12, 22, or 32 is operatively coupled to processor 11, 21, or 31 and stores various information to operate processor 11, 21, or 31. Transceiver 13, 23, or 33 is operatively coupled to processor 11, 21, or 31 and transmits and / or receives radio signals. The first TRP 20 (and the second TRP 30) and the next-generation core network (5GCN) can also communicate with each other wirelessly or via wired means. When the communication network system conforms to the New Radio (NR) standard of the 3rd Generation Partnership Project (3GPP), the next-generation core network is a back-end service network system that may include Access and Mobility Management Functions (AMF), User Plane Functions (UPF), and Session Management Functions (SMF). In one aspect, user equipment may include virtually any consumer electronic device or appliance that can connect to the radio access network and the core network to support 3GPP versions and higher, such as, but not limited to, NR networks.

[0069] Processor 11, 21, or 31 may include application-specific integrated circuits (ASICs), other chipsets, logic circuits, and / or data processing devices. Memory 12, 22, or 32 may include read-only memory (ROM), random access memory (RAM), flash memory, memory cards, storage media, and / or other storage devices. Transceiver 13, 23, or 33 may include baseband circuitry for processing radio frequency signals. When embodiments are implemented in software, the techniques described herein can be implemented by modules (e.g., programs, functions, etc.) that perform the functions described herein. These modules may be stored in memory 12, 22, or 32 and executed by processor 11, 21, or 31. Memory 12, 22, or 32 may be implemented within or external to processor 11, 21, or 31, in which case it may be communicatively coupled to processor 11, 21, or 31 in various ways known to the art. The user plane radio protocol architecture within the TRP (or gNB) and UE is as follows: Figure 5 As shown, it includes optional Service Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), and Media Access Control (MAC). In RAN function partitioning, the gNB further includes a Central Unit (CU) and multiple Distributed Units (DUs), such as... Figure 6 As shown. The CU's protocol stack includes an RRC layer, an optional SDAP layer, and a PDCP layer, while the DU's protocol stack includes an RLC layer, a MAC layer, and a PHY layer. The F1 interface between the CU and DU is established between the PDCP layer and the RLC layer.

[0070] Figure 7 This is a flowchart of a method 100 for enhancing a VRB-to-PRB interleaver during SBFD according to certain embodiments of the present invention. (See also...) Figure 7 and combined Figure 4Method 100 can be performed by a TRP or a base station. In method 100, the TRP or base station performs downlink (DL) and uplink (UL) transmissions simultaneously during SBFD. Method 100 includes the following steps. In step 110, the TRP or base station performs a VRB-to-PRB interleaver during SBFD to interleave resource blocks (RBs) and map VRB bundles to PRB bundles in a bandwidth portion (BWP). The BWP may include a first DL frequency domain and a second DL frequency domain for DL ​​transmission during SBFD, and a UL frequency domain for UL transmission. The first DL frequency domain and the second DL frequency domain are separated by the UL frequency domain. The BWP may further include a first guard frequency domain located between the first DL frequency domain and the UL frequency domain, and a second guard frequency domain located between the second DL frequency domain and the UL frequency domain. The VRB-to-PRB interleaver can be performed separately in the first DL frequency domain and the second DL frequency domain, or it can be performed by combining the first DL frequency domain and the second DL frequency domain. Furthermore, the VRBs in the first DL frequency domain and the second DL frequency domain can be arranged into VRB bundles separately, or they can be arranged together into VRB bundles.

[0071] On the user equipment (UE) side, the UE performs the corresponding method in which the UE receives downlink (DL) signals on the PRBs of the PRB bundles in the first DL frequency domain and the second DL frequency domain during SBFD, wherein resource blocks (RBs) are interleaved and VRB bundles are mapped to the PRB bundles in the first DL frequency domain and the second DL frequency domain during SBFD.

[0072] The VRB-PRB interleaver is enhanced in SBFD operation using the above method, which can benefit from less frequency-selective fading.

[0073] In some embodiments, when the VRB-to-PRB interleaver is executed in the first DL frequency domain, the number of RB bundles in the first DL frequency domain and the second DL frequency domain are calculated, the number of RBs in each RB bundle is calculated, and then the VRB bundles in the first DL frequency domain and the second DL frequency domain are interleaved and mapped to the PRB bundles respectively.

[0074] In some embodiments, where the VRB-to-PRB interleaver is performed by combining the first DL frequency domain and the second DL frequency domain, the number of RB bundles in the first DL frequency domain and the second DL frequency domain are calculated, the number of RBs in each RB bundle is calculated, the VRB bundle closest to the uplink (UL) frequency domain or the first guard frequency domain in the first DL frequency domain is directly mapped to the PRB bundle in the first DL frequency domain, the VRB bundle closest to the UL frequency domain or the second guard frequency domain in the second DL frequency domain is directly mapped to the PRB bundle in the second DL frequency domain, and the remaining VRB bundles are connected together in the first DL frequency domain and the second DL frequency domain to perform the interleaver, and then mapped to the PRB bundle.

[0075] Alternatively, when the VRB-to-PRB interleaving is performed by combining the first DL frequency domain and the second DL frequency domain, the number of VRBs in the VRB bundle closest to the UL frequency domain or the first protection frequency domain in the first DL frequency domain and the number of VRBs in the VRB bundle closest to the UL frequency domain or the second protection frequency domain in the second DL frequency domain are determined; if the number of VRBs in the VRB bundle closest to the UL frequency domain, the first protection frequency domain, or the second protection frequency domain in the first DL frequency domain or the second DL frequency domain is less than a configured value, the VRB bundle is directly mapped to the PRB bundle in the first DL frequency domain and the second DL frequency domain; if the number of VRBs is equal to the configured value, the VRB bundle is interleaved and then mapped to the PRB bundle.

[0076] In some embodiments, where the VRB-to-PRB interleaver is performed by combining the first DL frequency domain and the second DL frequency domain, and the VRBs in the first DL frequency domain and the second DL frequency domain are co-arranged into a VRB bundle, the VRB-to-PRB interleaver is performed in a BWP that includes the first DL frequency domain, the second DL frequency domain, and the UL frequency domain. The number of RB bundles in the BWP is calculated based on the size of the BWP. The number of RBs in each RB bundle is calculated. It is determined whether one VRB in the VRB bundle is in the UL frequency domain, and whether all VRBs in the VRB bundle are in the first DL frequency domain or the second DL frequency domain. If a VRB bundle has one VRB in the UL frequency domain, it is directly mapped to a PRB bundle. If a VRB bundle has all VRBs in the first DL frequency domain or the second DL frequency domain, an interleaver is performed, and then the bundle is mapped to a PRB bundle.

[0077]

[0078]

[0079]

[0080] Numbered j∈{0,1,…,N Bundle1-2 N Bundle1+1 ,…,N Bundle1 +N Bundle2-2 The VRB bundles are renumbered as j'∈{0,1,…,N} Bundle1 + N Bundle2-4}, or numbered j∈{0,1,…,N Bundle1-2 N Bundle1+1 ,…,N Bundle1 +N Bundle2-2 The VRB bundle is first mapped to the first intermediate RB bundle numbered j'∈{0,1,…,N}. Bundle1 +N Bundle2-4}

[0081] Numbered j'∈{0,1,…,N Bundle1+N Bundle2-4 The VRB bundle or the first intermediate RB bundle is mapped to the second intermediate RB bundle according to the following formula, with the number f(j').

[0082] f(j') = rC+c, j' = cR+r, r = 0,1,…,R-1, c = 0,1,…,C-1, R = 2, .

[0083] The number is f(j')∈{0,1,…,N Bundle1 +N Bundle2-4 The second intermediate RB beam is mapped to the numbered j''∈{0,1,…,N} across two DL frequency domains. Bundle1-2 , N Bundle1+1 ,…,N Bundle1 + N Bundle2-2 The PRB bundle of}

[0084] The VRB bundle numbered 0, spanning two DL frequency domains, is the first VRB bundle in the first DL frequency domain. The VRB bundle numbered N, spanning two DL frequency domains... Bundle1-1 The VRB bundle is the last VRB bundle in the first DL frequency domain and is closest to the UL / protection frequency domain. The bundle spanning two DL frequency domains is numbered N. Bundle1 The VRB bundle is the first VRB bundle in the second DL frequency domain and is closest to the UL / protection frequency domain. It is numbered N. Bundle1 + N Bundle2- The VRB beam of number 1 is the last VRB beam in the second DL frequency domain.

[0085] For the UL frequency domain, numbered j∈{ , ,…, VRBs of} are mapped one by one to the number k∈{ , ,…, The PRBs are mapped one-to-one. A similar mapping method is used for the guard domain (if any). The mapping process between the UL and guard domains is not required when performing a VRB-to-PRB interleaver. Figure 9 An example of the VRB to PRB interleaver results described above is shown. In this example, the guard band is omitted.

[0086]

[0087] Number N Bundle1 +N Bundle2 -1 VRB beam mapped to number N Bundle1 +N Bundle2 -1 PRB beam, spanning two DL frequency domains.

[0088] If number N Bundle1 If the number of RBs within a VRB bundle is less than L, then the number N is... Bundle1 -1 VRB beam mapped to number N Bundle1 -1 PRB beam, spanning two DL frequency domains. If numbered N Bundle1 If the number of RBs within a -1 VRB bundle is equal to L, then the number N is... Bundle1 -1 VRB beam mapped to number N Bundle1 -1 The first RB beam spans two DL frequency domains.

[0089] If number N Bundle1 If the number of RBs within a VRB bundle is less than L, then it is numbered N. Bundle1 VRB beam mapped to number N Bundle1 The PRB beam spans two DL frequency domains. If numbered N... Bundle1 If the number of RBs within a VRB bundle is equal to L, then the number N is... Bundle1 VRB beam mapped to number N Bundle1 The first RB beam spans two DL frequency domains.

[0090] If number N Bundle1 -1 and number N Bundle1 The number of RBs within the VRB bundle is equal to L: Number N Bundle1 -1 VRB beam mapped to number N Bundle1 -1 The first RB beam spans two DL frequency domains.

[0091] Number N Bundle1 VRB beam mapped to number N Bundle1 The first RB beam spans two DL frequency domains.

[0092] Number j∈{0,1,…,N Bundle1 +N Bundle2 -2} The VRB bundles are renumbered as j'∈{0,1,…,N} Bundle1 +N Bundle2 -2}, or the number j∈{0,1,…,N Bundle1 +N Bundle2 -2} VRB bundles are mapped to numbers j'∈{0,1,…, N} Bundle1 +N Bundle2 -2} First intermediate RB bundle.

[0093] Number j'∈{0,1,…,N Bundle1 +N Bundle2 -2} The VRB bundle or the first intermediate RB bundle is mapped to the second intermediate RB bundle numbered f(j') according to the following formula.

[0094] f(j') = rC+c, j' = cR+r, r = 0,1,…,R-1, c = 0,1,…,C-1, R = 2, .

[0095] Number f(j')∈{0,1,…,N Bundle1 +N Bundle2 -2} The second intermediate RB bundle is mapped to the number j''∈{0,1,…,N} Bundle1 + N Bundle2 -2} PRB beam, spanning two DL frequency domains.

[0096] If number N Bundle1 The number of RBs within -1 is equal to L and numbered N. Bundle1 The number of RBs within the VRB bundle is less than L: Number N Bundle1 -1 VRB beam mapped to number N Bundle1 -1 The first RB beam spans two DL frequency domains.

[0097] Number N Bundle1 VRB beam mapped to number N Bundle1 The PRB beam spans two DL frequency domains.

[0098] Number j∈{0,1,…,N Bundle1 -1,N Bundle1 +1,…,N Bundle1 +N Bundle2 -2} VRB bundles are renumbered as j'∈{0,1,…, N} Bundle1 + N Bundle2 -3}, or the number j∈{0,1,…,N Bundle1 -1,N Bundle1 +1,…,N Bundle1 +N Bundle2 -2} VRB bundles are mapped to numbers j'∈{0,1,…, N} Bundle1 + N Bundle2 -3} First intermediate RB bundle.

[0099] Number j'∈{0,1,…,N Bundle1 +N Bundle2 -3} The VRB bundle or the first intermediate RB bundle is mapped to the second intermediate RB bundle numbered f(j') according to the following formula.

[0100] f(j') = rC+c, j' = cR+r, r = 0,1,…,R-1, c = 0,1,…,C-1, R = 2, .

[0101] Number f(j')∈{0,1,…,N Bundle1 +N Bundle2 -3} The second intermediate RB bundle is mapped to the number j''∈{0,1,…,N} Bundle1 -1, N Bundle1 +1,…,N Bundle1 + N Bundle2 -2} PRB beam, spanning two DL frequency domains.

[0102] If number N Bundle1 The number of RBs within -1 is less than L and numbered N Bundle1 The number of RBs within the VRB bundle is equal to L: Number N Bundle1 -1 VRB beam mapped to number N Bundle1 -1 PRB beam, spanning two DL frequency domains.

[0103] Number N Bundle1 VRB beam mapped to number N Bundle1 The first RB beam spans two DL frequency domains.

[0104] Number j∈{0,1,…,N Bundle1 -2,N Bundle1 ,…,N Bundle1 +N Bundle2 -2} VRB bundles are renumbered as j'∈{0,1,…, N} Bundle1 + N Bundle2 -3}, or the number j∈{0,1,…,N Bundle1 -2,N Bundle1 ,…,N Bundle1 +N Bundle2 -2} VRB bundles are mapped to numbers j'∈{0,1,…, N} Bundle1 + N Bundle2 -3} First intermediate RB bundle.

[0105] Number j'∈{0,1,…,N Bundle1 +N Bundle2 -3} The VRB bundle or the first intermediate RB bundle is mapped to the second intermediate RB bundle numbered f(j') according to the following formula.

[0106] f(j') = rC+c, j' = cR+r, r = 0,1,…,R-1, c = 0,1,…,C-1, R = 2, .

[0107] Number f(j')∈{0,1,…,N Bundle1 +NBundle2 -3} The second intermediate RB bundle is mapped to the number j''∈{0,1,…,N} Bundle1 -2, N Bundle1 ,…,N Bundle1 + N Bundle2 -2} PRB beam, spanning two DL frequency domains.

[0108] If number N Bundle1 -1 and number N Bundle1 The number of RBs within the VRB bundle is less than L: Number N Bundle1 -1 VRB beam mapped to number N Bundle1 -1 PRB beam, spanning two DL frequency domains.

[0109] Number N Bundle1 VRB beam mapped to number N Bundle1 The PRB beam spans two DL frequency domains.

[0110] Number j∈{0,1,…,N Bundle1 -2,N Bundle1 +1,…,N Bundle1 +N Bundle2 -2} VRB bundles are renumbered as j'∈{0,1,…, N} Bundle1 + N Bundle2 -4}, or the number j∈{0,1,…,N Bundle1 -2,N Bundle1 +1,…,N Bundle1 +N Bundle2 -2} VRB bundles are mapped to numbers j'∈{0,1,…, N} Bundle1 + N Bundle2 -4} First intermediate RB bundle.

[0111] Number j'∈{0,1,…,N Bundle1 +N Bundle2 -4} The VRB bundle or the first intermediate RB bundle is mapped to the second intermediate RB bundle numbered f(j') according to the following formula.

[0112] f(j') = rC+c, j' = cR+r, r = 0,1,…,R-1, c = 0,1,…,C-1, R = 2, .

[0113] Number f(j')∈{0,1,…,N Bundle1 +N Bundle2 -4} The second intermediate RB bundle is mapped to the number j''∈{0,1,…,N} Bundle1 -2, NBundle1 +1,…,N Bundle1 + N Bundle2 -2} PRB beam, spanning two DL frequency domains.

[0114] VRB beam number 0 spans two DL frequency domains and is the first VRB beam in the first DL frequency domain. VRB beam number N... Bundle1 -1VRB bundle spans two DL frequency domains and is the last VRB bundle in the first DL frequency domain, and is closest to the UL / protection frequency domain. Number N Bundle1 The VRB bundle spanning two DL frequency domains is the first VRB bundle in the second DL frequency domain and is closest to the UL / protection frequency domain. Number N Bundle1 + N Bundle2 -1 VRB beam is the last VRB beam in the second DL frequency domain.

[0115] For the UL frequency domain, number j∈{ , ,…, VRBs are mapped one by one to the number k∈{ , ,…, PRBs. For the protection frequency domain (if any), a similar one-to-one mapping method is used. The mapping process between the UL frequency domain and the protection frequency domain is not required when performing a VRB to PRB interleaver.

[0116] In a fourth possible implementation, it is suggested that the VRB-PRB interleaver be performed across different DL frequency domains during SBFD. For BWP, Where L represents the number of RBs within the RB bundle configured in the higher parameter, and the value of L is 2 or 4. The size of the first RB bundle (number 0) is... The size of the last RB bundle (numbered NBundle-1) is... like Otherwise, it is L. If all VRBs within a VRB bundle are located in the DL frequency domain, then such a VRB bundle is called a DL VRB bundle. The number of these VRB bundles in the first DL frequency domain and the second DL frequency domain are N and N, respectively. Bundle1 and N Bundle2 The remaining RB bundles have a size of L. If any VRB within a VRB bundle is located in the UL frequency domain, the guard frequency domain, or both, then this type of VRB bundle is called a UL VRB bundle. The number of such VRB bundles is represented by N. Bundle3 Therefore, N Bundle1 + N Bundle2 +N Bundle3 = N Bundle Number j∈{0,1,…,N Bundle-1The VRB bundle is mapped to the PRB bundle in the following manner: Number j∈{0,1,…,N Bundle1 The downlink VRB bundle of {-1} corresponds to the number j'∈{0,1,…,N}. Bundle1 The first intermediate RB bundle of -1}, and the number j∈{N} Bundle1 +N Bundle3 -1,…, N Bundle1 +N Bundle3 +N Bundle2 The downlink VRB bundle of -1} corresponds to the number j'∈{N}. Bundle1 ,…, N Bundle1 +N Bundle2 The first medium RB bundle of -1}.

[0117] Number N Bundle1 +N Bundle2 The first intermediate RB bundle of -1 corresponds to the number N. Bundle1 +N Bundle2 -1 is the second medium bundle.

[0118] Number j''∈{0,1,…,N Bundle1 +N Bundle2 The first intermediate RB bundle of -2} corresponds to the second intermediate RB bundle of the number f(j'') according to the following formula.

[0119] f(j'') = rC+c, j'' = cR+r, r = 0,1,…,R-1, c = 0,1,…,C-1, R = 2, .

[0120] Number f(j'')∈{0,1,…,N Bundle1 The second intermediate RB bundle of -1} corresponds to the number k∈{0,1,…,N} Bundle1 PRB bundles in BWP of -1}.

[0121] Number f(j'')∈{N Bundle1 ,…, N Bundle1 +N Bundle2 The second intermediate RB bundle of -1} corresponds to the number k∈{N} Bundle1 +N Bundle3 -1,…, N Bundle1 +N Bundle3 +N Bundle2 PRB bundles in BWP of -1}.

[0122] Number j∈{NBundle1 ,…,N Bundle1 +N Bundle3 The uplink VRB of -1} is bundled to the number j'∈{N}. Bundle1 ,…,N Bundle1 +N Bundle3 The PRB bundle in the BWP of -1}. Here, the uplink VRB bundle is a virtual concept to facilitate the segmentation of RB bundles.

[0123] When performing a VRB to PRB interleaver, the mapping process between the uplink frequency domain and the guard frequency domain is not required.

[0124] Figure 10 shows an example of the VRB to PRB interleaver results described above. In this example, the guard band is omitted.

[0125] Figure 11 is a flowchart of a method 200 for receiving a measurement report of SBFD operation according to some embodiments of the present invention. Referring to Figure 11 in conjunction with Figure 4, method 200 can be performed by a TRP or a base station. Method 200 includes the following steps. In step 210, the TRP or base station notifies the user equipment (UE) of an SBFD or non-SBFD specific antenna port pattern, wherein the SBFD or non-SBFD specific antenna port pattern respectively indicates the antenna port distribution of downlink (DL) transmissions during the duration of SBFD or non-SBFD. The SBFD or non-SBFD specific antenna port pattern can be configured via Radio Resource Control (RRC) signaling.

[0126] At the user equipment (UE) end, the UE executes the corresponding method, wherein the UE is notified of an SBFD or non-SBFD specific antenna port mode, wherein the SBFD or non-SBFD specific antenna port mode respectively indicates the antenna port distribution of downlink (DL) transmission during the SBFD or non-SBFD duration.

[0127] The above method enables measurement reporting for SBFD operations, and SBFD operations can benefit from more accurate CSI feedback.

[0128] In some embodiments, zero-padding bits are added to the Precoded Matrix Indicator (PMI) field in the measurement results associated with SBFD operation. The number of zero-padding bits is equal to the number of PMIs associated with non-SBFD operations minus the number of PMIs associated with SBFD operations.

[0129] In some embodiments, if the SBFD-specific antenna port configuration includes a list of antenna port modes, the method further includes sending activation information to the UE to activate one of the antenna port modes in the list. The activation information can be sent via a Media Access Control (MAC) control element (CE) or downlink control information (DCI). For activation information that does not require acknowledgment, if the time point of the activation information plus a time offset exceeds the SBFD duration, the activated antenna port mode of the SBFD operation is applied immediately. For activation information that does not require acknowledgment, if the time point of the activation information plus a time offset is within the SBFD duration, the activated antenna port mode of the SBFD operation is applied after the SBFD duration ends.

[0130] In some embodiments, if the SBFD specific antenna port configuration includes a list of antenna port modes, the method further includes sending activation information to the UE to activate an antenna port mode in the list; and receiving confirmation information from the UE to confirm the activation of an antenna port mode in the list. For activation information requiring confirmation, if the time point of the confirmation information plus a time offset exceeds the SBFD duration, the activated antenna port mode of the SBFD operation is applied immediately. For activation information requiring confirmation, if the time point of the confirmation information plus a time offset is within the SBFD duration, the activated antenna port mode of the SBFD operation is applied after the SBFD duration ends.

[0131] Further details regarding the enhanced antenna port configuration to support SBFD operation are described below.

[0132] In a first possible implementation, in addition to the conventional antenna port modes defined by Rel-15 / 16 / 17, a new antenna port mode will be defined to support SBFD operation on the base station side of the wireless system. A marker will be added to the antenna port mode so that the user equipment (UE) can distinguish whether the antenna port mode configuration is for non-SBFD operation or SBFD operation, etc. Therefore, an SBFD-specific antenna port mode type is used and indicated to the UE side. This type can be represented as a string, index, or name. Detailed implementations are shown in Table 2.

[0133] Table 2. Direct SBFD specific antenna port mode configuration.

[0134]

[0135] In addition to the methods described above, besides directly indicating the purpose of the UE configuration, implicit indication methods should also be considered, as shown below.

[0136]

[0137] The configuration order distinguishes the purpose of the antenna port modes. This is illustrated using a single-sided board and Type I codebook as examples, but the same applies to other cases. The first antenna port mode configuration 'n1-n2' is used for non-SBFD operation. The second configuration 'n1-n2-SBFD' is used for SBFD operation.

[0138] Figure 12 Examples of antenna port patterns based on non-SBFD and SBFD are shown. For non-SBFD periods (DL), 'four-two-TypeI-SinglePanel-Restriction' is configured in 'n1-n2', so the base station uses all antenna ports to transmit DL signals (e.g., the first PDSCH) during non-SBFD periods (DL). For SBFD periods, 'four-one-TypeI-SinglePanel-Restriction' is configured in 'n1-n2-SBFD', so the base station uses one row (e.g., uplink) of antenna ports to transmit DL signals (e.g., the second PDSCH) and uses another row (e.g., downlink) of antenna ports to receive UL signals during SBFD periods.

[0139] To support SBFD operation, the CSI report configuration can include two types of CSI-RS resources, associated with non-SBFD and SBFD operations respectively. The number of CSI-RS resources is unlimited. One type of CSI-RS resource associated with a non-SBFD operation means the CSI-RS resource is in the non-SBFD period (DL). The other type of CSI-RS resource associated with an SBFD operation means the CSI-RS resource is in the SBFD period. Therefore, the base station will use different antenna port modes to transmit CSI-RS resources in different time periods. Different antenna port modes result in different PMI bit widths. Different PMI bit widths result in different sizes of CSI measurement results reported with the CSI-RS resources. Therefore, there are two types of CSI measurement results in the CSI report configuration, associated with non-SBFD and SBFD operations respectively. The UE will select one CSI measurement result to report in the CSI report configuration. In this case, the base station cannot know which type of CSI measurement result the UE is reporting, so the base station should perform blind detection because there are two types of report sizes. Therefore, alignment of the two types of report sizes can be used to avoid blind detection. Incidentally, if the base station correctly decodes the report, it can distinguish the type of CSI measurement result based on the CRI in the report.

[0140] Because the number of antenna ports performing CSI measurements during SBFD periods is equal to or less than the number of antenna ports during non-SBFD periods, the number of PMI bits in CSI measurements related to SBFD operations is equal to or less than the number of PMI bits related to non-SBFD operations. Therefore, zero-padding bits can be added after the PMI field in CSI measurements related to SBFD operations to align with the PMI field in CSI measurements related to non-SBFD operations. The number of zero-padding bits is equal to the number of PMI bits related to non-SBFD operations minus the number of PMI bits related to SBFD operations.

[0141] Figure 13 This shows an example of a CSI measurement and reporting procedure applicable to both non-SBFD and SBFD operations. For non-SBFD operations, N1 = 4, N2 = 2, O1 = 4, and O2 = 4. The number of bits for information X1 in the PMI associated with non-SBFD operations is represented as follows: If codebookMode = 1. For SBFD operations, N1 = 4, N2 = 1, O1 = 4, and O2 = 1. The number of bits for information X1 in the PMI associated with the SBFD operation is represented as follows: If codebookMode = 1, the number of bits in the PMI associated with both non-SBFD and SBFD operations is the same. Therefore, the PMI associated with SBFD operations has 3 fewer bits than that for non-SBFD operations. Three zero-padding bits are added after the PMI field associated with SBFD operations.

[0142] In a second possible implementation, it is recommended to configure the SBFD dedicated antenna port mode list via RRC signaling and to use the indication of the SBFD dedicated antenna port mode via MAC CE.

[0143] Considering the varying DL or UL traffic during different SBFD durations, the number of antenna ports for DL ​​or UL transmissions may differ across SBFD durations. Different numbers of antenna ports result in different antenna port modes. Therefore, multiple alternative antenna port modes are configured for SBFD operation, and the activation information for which antenna port mode to use for SBFD operation is dynamically transmitted to the UE. The antenna port mode configuration for SBFD operation can be a list in RRC signaling, as shown below.

[0144]

[0145]

[0146] Dynamic activation information regarding the antenna port mode used by the SBFD can be carried by the PDSCH (MAC CE) or PDCCH (DCI). The dynamic activation information can be a bitmap or an ID.Figure 14 Examples of different antenna port modes during different SBFD durations are shown. For example... Figure 14 As shown, if the first activation information is ID '0010', then 'four-one-TypeI-SinglePanel-Restriction' is activated. Therefore, the base station uses one row (e.g., uplink) of antenna ports to transmit DL signals during the SBFD duration (e.g., the first PDSCH) and uses another row (e.g., downlink) of antenna ports to receive UL signals. If the activation information is ID '0001', then 'two-two-TypeI-SinglePanel-Restriction' is activated. Therefore, the base station uses two antenna ports of one row (e.g., uplink) and two antenna ports of another row (e.g., downlink) to transmit DL signals during the SBFD duration (e.g., the second PDSCH) and uses four antenna ports of two rows (e.g., uplink and downlink) to receive UL signals.

[0147] Due to antenna switching time, the time offset and application time of the antenna port mode for SBFD operation should be defined. For activation information that does not require confirmation (e.g., DCI), if the activation information time plus the time offset does not fall within the SBFD duration, the indicator antenna port mode of the SBFD operation can be applied immediately, such as... Figure 15 As shown in (a) above. In this case, the application time is the activation information time plus the time offset. If the activation information time plus the time offset falls within the SBFD duration, the indicator antenna port mode of the SBFD operation can be applied after the SBFD duration ends, as shown below. Figure 15 As shown in (b) above. In this case, the application time is the first time unit after the SBFD duration ends. SBFD operation is performed using the antenna port mode indicated by the last previously activated information, after the activation information time and before the application information time.

[0148] For activation information requiring confirmation (e.g., MAC CE, DCI), if the confirmation information time plus the time offset is not within the SBFD duration, the indicator antenna port mode of SBFD operation can be applied immediately, such as... Figure 16 As shown in (a) above. In this case, the application time is the confirmation message time plus the time offset. If the confirmation message time plus the time offset falls within the SBFD duration, the indicator antenna port mode of the SBFD operation can be applied after the SBFD duration ends, as shown below. Figure 16As shown in (b) above. In this case, the application time is the first time unit after the SBFD duration ends. SBFD operation is performed using the antenna port mode indicated by the last previously activated information, after the activation information time and before the application information time.

[0149] Figure 17 This is a flowchart of a sub-band segmentation method 300 for SBFD operation according to some embodiments of the present invention. (See reference) Figure 17 Combination Figure 4 Method 300 can be performed by a TRP or a base station. In method 300, the TRP or base station performs downlink (DL) and uplink (UL) transmissions simultaneously during the SBFD duration, and the first DL frequency domain and the second DL frequency domain are separated by the UL frequency domain for UL transmission during the SBFD duration. Method 300 includes the following steps. In step 310, the TRP or base station determines the subbands in the first DL frequency domain and the second DL frequency domain during the SBFD duration according to default rules.

[0150] At the user equipment (UE) end, the UE executes a corresponding method in which it determines sub-bands in the first DL frequency domain and the second DL frequency domain during the SBFD duration according to default rules. Through this method, sub-band segmentation is enhanced during the SBFD operation.

[0151] In some embodiments, the sub-band sizes of the first DL frequency domain and the second DL frequency domain during the SBFD duration are determined based on the sizes of the first DL frequency domain and the second DL frequency domain, respectively. In some embodiments, the sub-band sizes of the first DL frequency domain and the second DL frequency domain during the SBFD duration are determined based on the sum of the sizes of the first DL frequency domain and the second DL frequency domain. In some embodiments, the sub-band sizes of the first DL frequency domain and the second DL frequency domain during the SBFD duration are determined based on the size of the BWP.

[0152]

[0153]

[0154]

[0155] The commercial benefits of certain embodiments are as follows: 1. Solving problems in the prior art. 2. Enhancing VRB to PRB interleavers for SBFD operations. 3. Implementing measurement reporting for SBFD operations. 4. Enhancing subband segmentation for SBFD operations. 5. Benefiting from less frequency-selective fading. 6. Benefiting from more accurate CSI feedback. Certain embodiments of the present invention are used by 5G-NR chipset suppliers, V2X communication system development suppliers, automotive manufacturers (including cars, trains, trucks, buses, bicycles, motorcycles, helmets, etc.), drones (unmanned aerial vehicles), smartphone manufacturers, public safety communication equipment manufacturers, and AR / VR device manufacturers (e.g., for gaming, conferences / seminars, educational purposes). Certain embodiments of the present invention are combinations of "technologies / processes" that can be adopted in 3GPP specifications to create the final product. Certain embodiments of the present invention can be adopted in 5G NR unlicensed frequency band communications. Certain embodiments of the present invention propose technical mechanisms.

[0156] Embodiments of the present invention further provide a transmit-receive point (TRP) including a processor and a transmitter. The processor is configured to invoke and execute program instructions stored in memory to perform the corresponding procedures implemented in each method of the embodiments of the present invention. For the sake of brevity, details are not described herein.

[0157] Embodiments of the present invention further provide a user equipment (UE) including a processor and a transmitter. The processor is configured to invoke and execute program instructions stored in memory to perform the corresponding procedures implemented in each method of the embodiments of the present invention. For the sake of brevity, details are not described herein.

[0158] Embodiments of the present invention further provide a calculator-readable storage medium for storing a calculator program. This calculator-readable storage medium enables the calculator to execute the corresponding procedures implemented by the UE / base station (BS) / TRP in each method of the embodiments of the present invention. For the sake of brevity, details are not described herein.

[0159] Embodiments of the present invention further provide a calculator program product, including calculator program instructions. This calculator program product enables the calculator to execute the corresponding processes implemented by the UE / BS / TRP in each method of the embodiments of the present invention. For the sake of brevity, details are not described herein.

[0160] Embodiments of the present invention further provide a calculator program. This calculator program enables the calculator to execute the corresponding processes implemented by the UE / BS / TRP in each method of the embodiments of the present invention. For the sake of brevity, details are not described herein.

[0161] Non-transient calculator-readable media may include at least one of the following combinations: hard disk, CD-ROM, optical storage device, magnetic storage device, read-only memory, programmable read-only memory, erasable programmable read-only memory, EPROM, electrically erasable programmable read-only memory, and flash memory. In embodiments using software implementation components, software may be stored on the calculator-readable medium and loaded into a computing system using, for example, a removable storage drive. When the control module (in this example, software instructions or executable calculator program code) is executed by a processor in the calculator system, the processor performs the inventive functions described herein.

[0162] Furthermore, innovative concepts can be applied to any circuit that performs signal processing functions within network components. Further envisioning, for example, semiconductor manufacturers could use innovative concepts in the design of standalone devices, such as microcontrollers for digital signal processors (DSPs), or by applying application-specific integrated circuits (ASICs) and / or any other subsystem components.

[0163] Those skilled in the art will recognize that, as illustrated by the examples described in conjunction with the embodiments disclosed herein, the units and algorithm steps can be implemented by electronic hardware or a combination of calculator software and electronic hardware. Whether a function is performed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention.

[0164] While the invention has been described in conjunction with embodiments considered to be the most practical and preferred, it should be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various arrangements made without departing from the broadest interpretation of the appended claims.

Claims

1. A method for interleaving virtual resource blocks (VRB) to physical resource blocks (PRB) during sub-band full-duplex SBFD, characterized in that, The method includes: VRB-to-PRB interleaving is performed during SBFD to interleave resource blocks (RBs) and map VRB bundles to PRB bundles in the bandwidth portion (BWP).

2. The method as described in claim 1, characterized in that, The BWP includes a first downlink DL frequency domain and a second DL frequency domain that are separated from each other.

3. The method as described in claim 2, characterized in that, The VRB-to-PRB interleaving is performed in the first DL frequency domain and the second DL frequency domain, respectively.

4. The method as described in claim 3, characterized in that, The number of RB beams in the first DL frequency domain and the second DL frequency domain is calculated based on the size of the first DL frequency domain and the second frequency domain, respectively.

5. The method as described in claim 4, characterized in that, Calculate the number of RBs in each RB bundle.

6. The method as described in claim 5, characterized in that, The VRB bundles in the first DL frequency domain and the second DL frequency domain are interleaved and then mapped to the PRB bundle.

7. The method as described in claim 2, characterized in that, The VRB-to-PRB interleaving is performed by combining the first DL frequency domain and the second DL frequency domain.

8. The method as described in claim 7, characterized in that, The number of RB beams in the first DL frequency domain and the second DL frequency domain is calculated based on the size of the first DL frequency domain and the second frequency domain, respectively.

9. The method as described in claim 8, characterized in that, Calculate the number of RBs in each RB bundle.

10. The method as described in claim 9, characterized in that, The VRB bundle closest to the uplink UL frequency domain or the first guard frequency domain of the BWP in the first DL frequency domain is directly mapped to the PRB bundle in the first DL frequency domain. The VRB bundle closest to the UL frequency domain or the second guard frequency domain in the second DL frequency domain is directly mapped to the PRB bundle in the second DL frequency domain. The remaining VRB bundles in the first DL frequency domain and the second DL frequency domain are connected together to perform interleaving and then mapped to the PRB bundle.

11. The method as described in claim 9, characterized in that, Determine the number of VRBs in the VRB bundle that is closest to the UL frequency domain or the first protection frequency domain of the BWP in the first DL frequency domain, and the number of VRBs in the VRB bundle that is closest to the UL frequency domain or the second protection frequency domain in the second DL frequency domain.

12. The method as described in claim 11, characterized in that, If the number of VRBs in the VRB bundle closest to the UL frequency domain, the first protection frequency domain, or the second protection frequency domain in the first DL frequency domain or the second DL frequency domain is less than the configured value, then the VRB bundle is directly mapped to the PRB bundle in the first DL frequency domain and the second DL frequency domain. If the number of VRBs equals the configured value, the VRB bundles are interleaved and then mapped to the PRB bundles.

13. The method as described in claim 2, characterized in that, The number of RB bundles in the BWP is calculated based on the size of the BWP.

14. The method as described in claim 13, characterized in that, Calculate the number of RBs in each RB bundle.

15. The method as described in claim 14, characterized in that, The BWP further includes a UL frequency domain, determining whether one VRB in the VRB bundle is located in the UL frequency domain, and determining whether all VRBs in the VRB bundle are located in the first DL frequency domain or the second DL frequency domain. The VRB bundle with one VRB located in the UL frequency domain is directly mapped to the PRB bundle. The VRB bundles with all VRBs located in the first DL frequency domain or the second DL frequency domain are interleaved and then mapped to the PRB bundle.

16. The method as described in claim 2, characterized in that, The BWP further includes a UL frequency domain, and for the UL frequency domain, the VRB is mapped to the PRB one by one.

17. The method as described in claim 2, characterized in that, The BWP further includes a protection frequency domain and a UL frequency domain. The protection frequency domain is arranged between the UL frequency domain and the first DL frequency domain or between the UL frequency domain and the second DL frequency domain. For the protection frequency domain, the VRB is mapped to the PRB one by one.

18. An interleaving method for mapping virtual resource blocks to physical resource blocks (VRB-to-PRB) during sub-band full-duplex SBFD, characterized in that, The method includes: During SBFD, downlink DL signals on the PRBs of the PRB bundles in the first DL frequency domain and the second DL frequency domain are received, wherein resource blocks RB are interleaved and VRB bundles are mapped to the PRB bundles in the first DL frequency domain and the second DL frequency domain during SBFD.

19. A Transmitter-Receiver Point (TRP), characterized in that, It includes a processor and a transmitter, wherein the processor is configured to invoke and execute program instructions stored in memory to perform the method as claimed in any one of claims 1 to 17.

20. A user equipment (UE), characterized in that, It includes a processor and a transmitter, wherein the processor is configured to invoke and execute program instructions stored in memory to perform the method of claim 18.

21. A method for receiving measurement reports of sub-band full-duplex SBFD operation, characterized in that, The method includes: The user equipment (UE) is notified that it has an SBFD or non-SBFD specific antenna port mode, wherein the SBFD or non-SBFD specific antenna port mode respectively indicates the antenna port distribution of downlink DL transmission during SBFD or non-SBFD.

22. The method as described in claim 21, characterized in that, The type of the SBFD-specific or non-SBFD-specific antenna port mode is indicated by a string, index, or name.

23. The method as described in claim 21, characterized in that, The type of antenna port mode, whether SBFD-specific or non-SBFD-specific, is indicated by an implicit indication.

24. The method as described in claim 21, characterized in that, Add zero-padding bits to the PMI field of the precoded matrix indicator in the measurement results associated with the SBFD operation.

25. The method as described in claim 24, characterized in that, The number of zero-fill bits is equal to the number of PMIs associated with non-SBFD operations minus the number of PMIs associated with SBFD operations.

26. The method as described in claim 21, characterized in that, The SBFD or non-SBFD specific antenna port mode is configured via Radio Resource Control (RRC) signaling.

27. The method as described in claim 21, characterized in that, The SBFD-specific antenna port mode is included in the antenna port mode list.

28. The method as described in claim 27, characterized in that, The antenna port mode list is configured via Radio Resource Control (RRC) signaling.

29. The method as described in claim 28, characterized in that, Further includes: Send activation information to the UE to activate one of the antenna port modes in the antenna port mode list.

30. The method as described in claim 29, characterized in that, The activation information is sent via Media Access Control (MAC) control element (CE) or Downlink Control Information (DCI).

31. The method as described in claim 29, characterized in that, If the time point of the activation information plus the time offset exceeds the SBFD period, the active antenna port mode of the SBFD operation is applied immediately.

32. The method as described in claim 29, characterized in that, If the activation information's time point plus the time offset falls within the SBFD period, then the activated antenna port mode of the SBFD operation is applied after the SBFD period ends.

33. The method as described in claim 29, characterized in that, Further includes: The UE receives confirmation information to confirm the activation of one of the antenna port modes in the antenna port mode list.

34. The method as described in claim 33, characterized in that, For activation information that requires confirmation, if the time point of the confirmation information plus the time offset exceeds the SBFD period, then the active antenna port mode of the SBFD operation is applied immediately.

35. The method as described in claim 33, characterized in that, For activation information that requires confirmation, if the time point of the confirmation information plus the time offset is within the SBFD period, then the active antenna port mode of the SBFD operation is applied after the SBFD period ends.

36. A Transmitter-Receiver Point (TRP), characterized in that, It includes a processor and a transmitter, wherein the processor is configured to invoke and execute program instructions stored in memory to perform the method as claimed in any one of claims 21 to 35.

37. A measurement reporting method for sub-band full-duplex SBFD operation, characterized in that, The method includes: It is notified that there is an SBFD or non-SBFD specific antenna port mode, wherein the SBFD or non-SBFD specific antenna port mode respectively indicates the antenna port distribution of downlink DL transmission during SBFD or non-SBFD.

38. The method as described in claim 37, characterized in that, The type of the SBFD-specific or non-SBFD-specific antenna port mode is indicated by a string, index, or name.

39. The method as described in claim 37, characterized in that, The type of antenna port mode, whether SBFD-specific or non-SBFD-specific, is indicated by an implicit indication.

40. The method as described in claim 37, characterized in that, Add zero-padding bits to the PMI field of the precoded matrix indicator in the measurement results associated with the SBFD operation.

41. The method as described in claim 40, characterized in that, The number of zero-fill bits is equal to the number of PMIs associated with non-SBFD operations minus the number of PMIs associated with SBFD operations.

42. The method as described in claim 37, characterized in that, The SBFD or non-SBFD specific antenna port mode is configured via Radio Resource Control (RRC) signaling.

43. The method as described in claim 37, characterized in that, The SBFD-specific antenna port mode is included in the antenna port mode list.

44. The method as described in claim 43, characterized in that, The antenna port mode list is configured via Radio Resource Control (RRC) signaling.

45. The method as described in claim 44, characterized in that, Further includes: Receive activation information to activate one of the antenna port modes in the antenna port mode list.

46. ​​The method as described in claim 45, characterized in that, The activation information is sent via Media Access Control (MAC) control element (CE) or Downlink Control Information (DCI).

47. The method as described in claim 45, characterized in that, If the time point of the activation information plus the time offset exceeds the SBFD period, the active antenna port mode of the SBFD operation is applied immediately.

48. The method as described in claim 45, characterized in that, If the activation information's time point plus the time offset falls within the SBFD period, then the active antenna port mode of the SBFD operation is applied after the SBFD period ends.

49. The method as described in claim 45, characterized in that, Further includes: Send a confirmation message to confirm activation of one of the antenna port modes in the antenna port mode list.

50. The method as described in claim 49, characterized in that, For activation information that requires confirmation, if the time point of the confirmation information plus the time offset exceeds the SBFD period, then the active antenna port mode of the SBFD operation is applied immediately.

51. The method as described in claim 49, characterized in that, For activation information that requires confirmation, if the time point of the confirmation information plus the time offset is within the SBFD period, then the active antenna port mode of the SBFD operation is applied after the SBFD period ends.

52. A user equipment (UE), characterized in that, It includes a processor and a transmitter, wherein the processor is configured to invoke and execute program instructions stored in memory to perform the method as claimed in any one of claims 37 to 51.

53. A sub-band division method for full-duplex SBFD operation, characterized in that, The method includes: Sub-bands in the first DL frequency domain and the second DL frequency domain during SBFD are determined based on default rules.

54. The method as described in claim 53, characterized in that, The subband sizes in the first DL frequency domain and the second DL frequency domain during SBFD are determined based on the sizes of the first DL frequency domain and the second DL frequency domain, respectively.

55. The method as described in claim 53, characterized in that, The subband size in the first DL frequency domain and the second DL frequency domain during SBFD is determined based on the sum of the sizes of the first DL frequency domain and the second DL frequency domain.

56. The method as described in claim 53, characterized in that, The subband sizes in the first DL frequency domain and the second DL frequency domain during SBFD are determined based on the size of the BWP.

57. A Transmitter-Receiver Point (TRP), characterized in that, It includes a processor and a transmitter, wherein the processor is configured to invoke and execute program instructions stored in memory to perform the method as claimed in any one of claims 53 to 56.

58. A user equipment (UE), characterized in that, It includes a processor and a transmitter, wherein the processor is configured to invoke and execute program instructions stored in memory to perform the method as claimed in any one of claims 53 to 56.

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