Channel State Information Measurement and Reporting Extension

Abstract

An aspect of this technical solution includes: receiving, by a wireless communication device, a plurality of reference signal resources and a plurality of configuration parameters from a network, where the plurality of reference signal resources include a plurality of channel state information-reference signal (CSI-RS) resources and a plurality of channel state information-interference measurement (CSI-IM) resources, and the plurality of configuration parameters include a codebook subset restriction (CBSR); determining, by the wireless communication device, a channel state information (CSI) report based on the plurality of reference signal resources and the plurality of configuration parameters; and transmitting, by the wireless communication device, the CSI report to the network.

Description

[Technical Field]

[0001] Technical Field The present implementations relate generally to wireless communications, and more particularly to systems, methods, apparatus, and non-transitory computer-readable media for channel state information measurement and reporting enhancements. [Background technology]

[0002] background Multiple-input multiple-output (MIMO) is one of the key technologies in New Radio (NR) systems and has been successfully deployed commercially. MIMO features are specified for both frequency division duplex (FDD) and time division duplex (TDD) systems. Considering ideal backhaul and synchronization, as well as the same number of antenna ports across the TRP, enhancements in channel state information (CSI) acquisition for coherent joint transmission (CJT) are required. Significant user equipment (UE) performance losses at high or medium speeds can occur in commercial deployments, especially in multi-user MIMO (MU-MIMO) scenarios. Because performance losses are partially caused by CSI, enhancements to CSI measurement and reporting to mitigate such losses can be beneficial. Summary of the Invention [Means for solving the problem]

[0003] overview This technical solution may include a new design of CSI-RS and CSI-IM configurations for CJT CSI measurement and reporting. Furthermore, this technical solution may include a new design of codebook subset restriction for Type II codebook refinement for CJT and high / medium speed CSI measurement and reporting.

[0004] At least one aspect relates to a wireless communication method. The method may include receiving, by a wireless communication device, a plurality of reference signal resources and a plurality of configuration parameters from a network, where the plurality of reference signal resources include a plurality of channel state information-reference signal (CSI-RS) resources and a plurality of channel state information-interference measurement (CSI-IM) resources, and the plurality of configuration parameters include a codebook subset restriction (CBSR). The method may include determining, by the wireless communication device, a channel state information (CSI) report based on the plurality of reference signal resources and the plurality of configuration parameters. The method may include transmitting, by the wireless communication device, the CSI report to the network.

[0005] At least one aspect relates to a wireless communication method. The method can include transmitting, by a network, to a wireless communication device, a plurality of reference signal resources and a plurality of configuration parameters, the plurality of reference signal resources including a channel state information-reference signal (CSI-RS) resource and a channel state information-interference measurement (CSI-IM) resource, and the plurality of configuration parameters including a codebook subset restriction (CBS). The method can include receiving, by the network, from the wireless communication device, a channel state information (CSI) report determined by the wireless communication device based on the plurality of reference signal resources and the plurality of configuration parameters.

[0006] These and other aspects and their implementations are described in more detail in the drawings, description, and claims. [Brief explanation of the drawings]

[0007] These and other aspects and features of the present implementations will become apparent to those skilled in the art upon review of the following description of specific implementations in conjunction with the accompanying drawings.

[0008] [Figure 1] FIG. 1 illustrates an exemplary wireless communication network in various configurations.

[0009] [Figure 2] FIG. 2 illustrates a block diagram of an exemplary wireless communication system for transmitting and receiving downlink and uplink communication signals according to various arrangements.

[0010] [Figure 3] FIG. 3 illustrates an exemplary CMR configuration according to this implementation.

[0011] [Figure 4] FIG. 4 illustrates an exemplary CMR configuration according to this implementation.

[0012] [Figure 5] FIG. 5 illustrates an exemplary CMR configuration according to this implementation.

[0013] [Figure 6] FIG. 6 illustrates an exemplary CMR configuration according to this implementation.

[0014] [Figure 7] FIG. 7 illustrates an exemplary CMR configuration according to this implementation.

[0015] [Figure 8] FIG. 8 illustrates an exemplary CMR configuration according to this implementation.

[0016] [Figure 9] FIG. 9 illustrates an exemplary CMR configuration according to this implementation.

[0017] [Figure 10] FIG. 10 illustrates an exemplary CMR configuration according to this implementation.

[0018] [Figure 11] FIG. 11 illustrates an exemplary CMR configuration according to this implementation.

[0019] [Figure 12] FIG. 12 illustrates an exemplary method for channel state information measurement and reporting enhancement according to this implementation.

[0020] [Figure 13] FIG. 13 illustrates an exemplary method for channel state information measurement and reporting enhancement according to this implementation.

[0021] [Figure 14] FIG. 14 illustrates an exemplary method for channel state information measurement and reporting enhancement according to this implementation. DETAILED DESCRIPTION OF THE INVENTION

[0022] Detailed Description The present implementation will now be described in detail with reference to the drawings, which are provided as illustrative examples of implementations to enable those skilled in the art to implement implementations and alternatives that will be apparent to those skilled in the art. In particular, the following figures and examples are not intended to limit the scope of the present implementation to a single implementation; other implementations are possible by replacing some or all of the described or illustrated elements. Furthermore, if a particular element of the present implementation can be implemented partially or completely using known components, only the portions of such known components necessary for understanding the present implementation will be described, and detailed descriptions of other portions of such known components will be omitted so as not to obscure the present implementation. An implementation described as being implemented in software should not be limited thereto and, unless otherwise specified herein, can include implementations implemented in hardware, or a combination of software and hardware, and vice versa, as will be apparent to those skilled in the art. Herein, implementations depicting a single component should not be considered limiting. Rather, the present disclosure is intended to encompass other implementations including multiple identical components, and vice versa, unless otherwise specified herein. Furthermore, applicant does not intend any term in the specification or claims to be ascribed an uncommon or special meaning unless expressly so stated. Furthermore, the present implementation encompasses present and future known equivalents to known components referenced herein by way of example.

[0023] FIG. 1 illustrates an exemplary wireless communication network 100. The wireless communication network 100 supports group communication or multicast services within a cellular network. In the wireless communication network 100, a network-side communication node or base station (BS) may include one or more of a Next Generation Node B (gNB), an E-Utran Node B (also known as an Evolved Node B, eNodeB, or eNB), a pico station, a femto station, a transmission / reception point (TRP), an access point (AP), etc. A terminal-side node or UE may include a long-range communication system (such as a mobile device, a smartphone, a personal digital assistant (PDA), a tablet, a laptop computer, etc.) or a short-range communication system (such as, but not limited to, a wearable device, a vehicle with a vehicular communication system, etc.). As in FIG. 1, the network-side communication node is represented by a BS 102, and the terminal-side communication node is represented by a UE 104a or 104b. In some arrangements, the BS 102 may be referred to as a “wireless communication node,” and the UE 104a / 104b may be referred to as a “wireless communication device.”

[0024] As shown in Figure 1, BS 102 can provide wireless communication services to UEs 104a and 104b within cell 101. UE 104a can communicate with BS 102 via communication channel 103a. Similarly, UE 104b can communicate with BS 102 via communication channel 103b. The communication channels (e.g., 103a and 103b) can be over an interface such as, but not limited to, the Uu interface, also known as the Universal Mobile Telecommunications System (UMTS) air interface. BS 102 is connected to a core network (CN) 108 via an external interface 107, e.g., an NG interface.

[0025] 2 shows a block diagram of an example wireless communication system 150 for transmitting and receiving downlink and uplink communication signals in accordance with some arrangements of the present disclosure. Referring to FIGS. 1 and 2, system 150 is part of network 100. In system 150, data symbols can be transmitted and received in a wireless communication environment, such as wireless communication network 100 of FIG.

[0026] The system 150 generally includes a BS 102 and UEs 104a and 104b. The BS 102 includes a BS transceiver module 110, a BS antenna 112, a BS memory module 116, a BS processor module 114, and a network communication module 118. The modules / components are coupled and interconnected with each other as needed via a data communication bus 120. The UE 104a includes a UE transceiver module 130a, a UE antenna 132a, a UE memory module 134a, and a UE processor module 136a. The modules / components are coupled and interconnected with each other as needed via a data communication bus 140a. Similarly, the UE 104b includes a UE transceiver module 130b, a UE antenna 132b, a UE memory module 134b, and a UE processor module 136b. The modules / components are coupled and interconnected with each other as needed via a data communication bus 140b. BS 102 communicates with UEs 104a and 104b via a communication channel 155, which may be any wireless channel or other medium known in the art suitable for transmitting data as described herein.

[0027] System 150 may further include any number of modules / elements other than those illustrated in FIG. 2 . The various example blocks, modules, elements, circuits, and processing logic described in connection with the arrangements disclosed herein may be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, the various example components, blocks, modules, circuits, and steps are described generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software depends on the particular application and design constraints imposed on the overall system. Those familiar with the concepts described herein may implement such functionality in a manner suitable for each particular application, but such implementation decisions should not be construed as limiting the scope of the present disclosure.

[0028] Wireless transmissions from the antennas of each of the UEs 104a, 104b to the antennas of the BS 102 are known as uplink transmissions, and wireless transmissions from the antennas of the BS 102 to the antennas of each of the UEs 104a, 104b are known as downlink transmissions. According to some arrangements, each of the UE transceiver modules 130a and 130b may be referred to herein as an uplink transceiver or a UE transceiver. The uplink transceivers may include transmitter and receiver circuits coupled to the respective antennas 132a and 132b. Alternatively, a duplexing switch may couple the uplink transmitter or receiver to the uplink antennas in a time-duplexing manner. Similarly, the BS transceiver module 110 may be referred to herein as a downlink transceiver or a BS transceiver. The downlink transceivers may include RF transmitter and receiver circuits coupled to the antennas 112. Alternatively, a downlink duplexing switch may couple the downlink transmitter or receiver to the antennas 112 in a time-duplexing manner. The operation of the transceivers 110, 130a, and 130b is coordinated in time such that the downlink transmitter is coupled to the antenna 112 while the uplink receiver is coupled to the antennas 132a and 132b for receiving transmissions over the wireless communication channel 155. In some deployments, the UEs 104a and 104b can use the UE transceivers 130a and 130b via their respective antennas 132a and 132b to communicate with the BS 102 over the wireless communication channel 155. The wireless communication channel 155 can be any wireless channel or other medium suitable for downlink (DL) and / or uplink (UL) transmission of data as described herein.

[0029] The UE transceivers 130a / 130b and the BS transceiver 110 are configured to communicate over a wireless data communication channel 155 and cooperate with appropriately configured antenna arrangements capable of supporting a particular wireless communication protocol and modulation scheme. In some arrangements, the UE transceivers 130a / 130b and the BS transceiver 110 are configured to support industry standards such as Long Term Evolution (LTE) and emerging 5G standards. However, it will be understood that the present disclosure is not necessarily limited in application to a particular standard and associated protocol. Rather, the UE transceivers 130a / 130b and the BS transceiver 110 may be configured to support alternative or additional wireless data communication protocols, including future standards or variations thereof.

[0030] Processor modules 136a and 136b and 114 may each be implemented or realized using a general purpose processor, an associative memory, a digital signal processor, an application specific integrated circuit, a field programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. In this manner, a processor may be realized as a microprocessor, a controller, a microcontroller, a state machine, etc. A processor may also be implemented as a combination of computing devices, e.g., a combination of a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other such configuration.

[0031] Furthermore, the methods or algorithms described in connection with the arrangements disclosed herein may be embodied directly in hardware, in firmware, in software modules executed by processor modules 114, 136a, and 136b, respectively, or in any practical combination thereof. Memory modules 116, 134a, and 134b may be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other suitable form of storage medium. In this regard, memory modules 116, 134a, and 134b may be coupled to processor modules 114, 136a, and 136b, respectively, such that processor modules 114, 136a, and 136b can read information from and write information to memory modules 116, 134a, and 134b, respectively. Memory modules 116, 134a, and 134b may also be integrated into their respective processor modules 114, 136a, and 136b. In some arrangements, memory modules 116, 134a, and 134b may each include cache memory for storing temporary variables or other intermediate information during execution of instructions to be executed by processor modules 114, 136a, and 136b, respectively. Memory modules 116, 134a, and 134b may also each include non-volatile memory for storing instructions to be executed by processor modules 114, 136a, and 136b, respectively.

[0032] The network interface 118 generally represents hardware, software, firmware, processing logic, and / or other components of the BS 102 that enable bidirectional communication between the BS transceiver 110 and other network components and communication nodes configured to communicate with the BS 102. For example, the network interface 118 may be configured to support Internet or WiMAX traffic. In a typical deployment, but not limited to, the network interface 118 provides an 802.3 Ethernet interface to enable the BS transceiver 110 to communicate with conventional Ethernet-based computer networks. In this manner, the network interface 118 may include a physical interface for connecting to a computer network (e.g., a mobile switching center (MSC)). The terms “configured for” or “configured to,” as used herein with respect to a specified operation or function, refer to devices, components, circuits, structures, machines, signals, etc. that are physically constructed, programmed, formatted, and / or arranged to perform the specified operation or function. The network interface 118 may enable the BS 102 to communicate with other BSs or a core network via wired or wireless connections.

[0033] The BS 102 can communicate with multiple UEs (including UEs 104a and 104b) using multicast or broadcast, collectively referred to as MBS. The multiple UEs can each receive the MBS service via multicast and / or broadcast. To receive the MBS service, the multiple UEs have a common understanding of the configuration of the MBS service, including, but not limited to, frequency resource ranges for resource allocation, scrambling sequences, etc., referred to herein as a PTM configuration, multicast configuration, or MBS configuration. The network (e.g., BS 102 or cell 101) can distribute the PTM configuration for MBS multicast reception for the UEs 104a or 104b in different RRC states.

[0034] In some deployments, the UE 104a or 104b receives the PTM configuration or an update thereof from the network (e.g., the BS 102 or the cell 101) via dedicated signaling specific to the UE. An example of dedicated signaling includes RRC reconfiguration signaling. For example, a UE in an RRC inactive state initiates an RRC connection resumption process to receive the PTM configuration update. When the UE is in an RRC connected state, the PTM configuration is delivered by the network via dedicated signaling.

[0035] At least one aspect relates to higher layer parameter configuration of CJT CSI for measurement and reporting. For a type II codebook refinement for multiple transmit receive point (MTRP) coherent joint transmission (CJT), higher layer parameters are configured by the gNB and received by the UE. For example, codebookType is set to "typeII-r18" or "typeII-MultiPanel-r18."

[0036] At least one aspect relates to the configuration of channel measurement resources (CMRs) and interference measurement resources (IMRs) of CJT CSI for measurement and reporting. For type II codebook refinement for multiple transmit / receive points (MTRPs), the coherent joint transmission (CJT), CMR, and IMR configurations can be extended. For example, a CMR set includes K CMRs, and each CMR is associated with one transmit / receive point (TRP). For example, multiple IMRs are configured, and each of the multiple IMRs is associated with K CMRs.

[0037] 3 shows an exemplary CMR configuration according to the present implementation. As shown in FIG. 3 as an example, the exemplary CMR configuration 300 may include at least a resource link 302, a CMR set 310, CMR resources 320, 322, 324, 326, 330, 332, 334, and 336, and IMR resources 340, 342, 344, 346, 350, 352, 354, and 356. For example, K IMRs are configured, and each CMR is associated with one IMR. The K IMRs may be zero-power IMRs (ZP-IMRs) and / or non-zero-power IMRs (NZP-IMRs).

[0038] 4 illustrates an exemplary CMR configuration according to this implementation. As illustrated in FIG. 4 as an example, the exemplary CMR configuration 400 may include at least a multiple resource link 402, a single resource link 404, multiple CMR resource blocks 410 and 412, single CMR resource blocks 420 and 422, multiple IM resource blocks 430 and 432, and single IMR resource blocks 440 and 442. For example, M IMRs are configured. One or more CMRs are associated with one IMR. For example, M is equal to or less than K. The M IMRs may be ZP-IMRs and / or NZP-IMRs.

[0039] 5 illustrates an exemplary CMR configuration according to this implementation. As illustrated in FIG. 5 as an example, the exemplary CMR configuration 500 may include at least a resource link 502, a multiple CMR resource block 510, and a single IMR resource 520. For example, only one IMR is configured, and all CMR groups are associated with this IMR. This IMR may be a ZP-IMR and / or an NZP-IMR.

[0040] 6 shows an exemplary CMR configuration according to the present implementation. As shown in FIG. 6 as an example, the exemplary CMR configuration 600 may include at least a resource link 602, a resource link 604, NZP-IMR resources 610, 612, 614, 616, 620, 622, 624, and 626, and a ZP-IMR resource 630. For example, multiple NZP-IMRs and only one ZP-IMR may be configured, with each CMR associated with one NZP-IMR and all CMRs associated with a ZP-IMR.

[0041] 7 illustrates an exemplary CMR configuration according to the present implementation. As illustrated in FIG. 7 as an example, the exemplary CMR configuration 700 may include at least resource links 702, 704, and 706. For example, M NZP-IMRs and only one ZP-IMR may be configured. Here, one or more CMRs may be associated with one NZP-IMR. For example, M is less than or equal to K. For example, all CMR groups may be associated with a ZP-IMR.

[0042] At least one aspect relates to a codebook subset restriction (CBSR) configuration of CJT CSI for measurement and reporting. For example, this aspect may relate to 38.214 5.2.2.2.5 Extended Type II Codebook. The bitmap parameter n1-n2-codebookSubsetRestriction-r16 forms a bit string B=B1B2 and is related to the vector group index g as per Section 5.2.2.2.3. (k) Configure the bit [ka] is the group g indexed by x1,x2 (k) the maximum allowable mean amplitude of the coefficients associated with the vectors in [ka] where the maximum amplitude is given in Table 1 and the average coefficient amplitude is [ka] is restricted to: [ka] [Table 1]

[0043] For example, Type II codebook refinement for multiple transmit-receive points (MTRP) coherent joint transmission (CJT), a CBSR configuration, can be extended. For CJT, a CMR set includes K CMRs. The K CMRs form N CMR groups. For example, N is less than or equal to K, and each CMR group is associated with one transmit-receive point (TRP), K1+K2+...+K. N =K.

[0044] For example, the bitmap parameters can be configured by the gNB and received by the UE. For each layer and each polarization, the average coefficient amplitude can be determined based on the wideband amplitude and the subband amplitude across the L CMR groups. [ka] is the group g indexed by x1,x2 (k) the maximum allowable mean amplitude of the coefficients associated with the vectors in [ka] It can be shown that the maximum amplitude is given in Table 1 and the average coefficient amplitude is [ka] is restricted to: [ka]

[0045] For example, N bitmap parameters are configured by the gNB and received by the UE. Each bitmap parameter is associated with one CMR group. For each layer, polarization, and CMR group, the average coefficient amplitude can be determined based on the wideband amplitude and the subband amplitude. [ka] is the group g indexed by x1,x2 (k) the maximum allowable mean amplitude of the coefficients associated with the vectors in [ka] It can be shown that the maximum amplitude is given in Table 1 and the average coefficient amplitude is [ka] is restricted to: [ka]

[0046] In Rel-16, the UE is configured with a restriction of four vector groups for only one bitmap parameter. In Rel-18, the UE can be configured with a restriction of a different number of vector groups for N bitmap parameters. For example, [K0,K1,...,KN -1 ] is associated with N CMR groups, where K0,=K1,=...,=K N-1 = 4 and [K0,K1,...,KN -1 ] is constructed by gNB, and [K0,K1,...,KN -1 ] depends on UE capabilities.

[0047] At least one aspect relates to a CBSR configuration of Doppler CSI for measurement and reporting. For example, a Type II codebook refinement for high / medium speed, time-domain correlation / Doppler-domain information is used for CSI measurement and reporting. Q Doppler-domain basis vectors are selected to obtain the Type II codebook. As a result, the CBSR configuration for Doppler CSI measurement and reporting can be extended. For example, bitmap parameters are configured by the gNB and received by the UE.

[0048] For each layer and each polarization, the average coefficient amplitude is determined based on the wideband and subband amplitudes across the Q Doppler domain bases. [ka] is the group g indexed by x1,x2 (k) the maximum allowable mean amplitude of the coefficients associated with the vectors in [ka] where the maximum amplitude is given in Table 1 and the average coefficient amplitude is [ka] is restricted to: [ka]

[0049] For example, Q bitmap parameters are configured by the gNB and received by the UE, and each bitmap parameter is associated with one demultiplexing domain (DD) basis vector. For each layer, each polarization, and each DD basis vector, the average coefficient amplitude is determined based on the wideband amplitude and the subband amplitude. [ka] is the group g indexed by x1,x2 (k) the maximum allowable mean amplitude of the coefficients associated with the vectors in [ka] It can be shown that the maximum amplitude is given in Table 1 and the average coefficient amplitude is [ka] is restricted to: [ka]

[0050] For example, the bit string [ka] is the group index g (k) Bit string B2 for k=0,1,...,3 corresponding to (k) The bit string B2 (k) is defined as follows: [ka]

[0051] bit [ka] is the group g indexed by x1,x2 (k) Maximum allowable amplitude coefficient for vectors in [ka] For example, in Rel-18, B2 and B2 (k,q) can be expanded, for example, [ka] For example, [ka] For example, n1-n2-codebookSubsetRestriction can correspond to the number of antenna ports in the first (n1) and second (n2) dimensions and the codebook subset restriction. For example, the number of bits for the codebook subset restriction is [ka] where [ka] For example, the bit string size of n1-n2-codebookSubsetRestriction can be expanded.

[0052] At least one aspect relates to a CMR and IMR configuration of Doppler CSI for measurement and reporting. For example, a Type II codebook refinement for high / medium speed and time-domain correlation / Doppler-domain information is used for CSI measurement and reporting. In this case, the CMR and IMR configuration can be extended. In the case of an aperiodic CSI-RS configuration, a semi-persistent CSI-RS configuration, or a periodic CSI-RS configuration, the CMR set includes K CMRs. For example, multiple IMRs are configured and associated with the K CMRs.

[0053] 8 shows an exemplary CMR configuration according to this implementation. As shown in FIG. 8 as an example, the exemplary CMR configuration 800 may include at least multiple IMR resource blocks 810 and 812 and single IMR resource blocks 820 and 822. For example, M IMRs are configured, and one or more CMRs are associated with one IMR. For example, M is less than or equal to K. For example, the M IMRs may be ZP-IMR and / or NZP-IMR.

[0054] 9 illustrates an exemplary CMR configuration according to the present implementation. As illustrated in FIG. 9 as an example, the exemplary CMR configuration 900 may include at least a single IMR resource 910. For example, only one IMR is configured, and all CMRs are associated with this IMR. For example, the IMR may be a ZP-IMR and / or an NZP-IMR.

[0055] 10 illustrates an exemplary CMR configuration according to the present implementation. As illustrated by way of example in FIG. 10, the exemplary CMR configuration 1000 may include at least a single ZP-IMR resource 1010. For example, K NZP-IMRs and only one ZP-IMR may be configured, with each CMR associated with one NZP-IMR and all CMRs associated with a ZP-IMR.

[0056] 11 illustrates an exemplary CMR configuration according to the present implementation. As illustrated by way of example in FIG. 11, the exemplary CMR configuration 1100 may include at least a single ZP-IMR resource 1110. For example, M NZP-IMRs and only one ZP-IMR may be configured, with one CMR or more CMRs associated with one NZP-IMR. For example, M is less than or equal to K, and all CMR groups are associated with a ZP-IMR.

[0057] At least one aspect relates to a priority formulation for Doppler CSI. For example, the priority value is determined by one or more of a frequency domain (FD) basis, a spatial domain (SD) basis, and a layer. For an extended Type II report, for a given CSI report n, each reported element of subband amplitude, subband phase, and coefficient location, indexed by l, i, and f, is assigned a priority value [ka] can be associated with [ka] and [ka] and [ka] is defined in Section 5.2.2.2.5. The element with the highest priority has the lowest associated value Pri(l,i,f). For example, the value of Pri can be based on an FD basis over an SD basis on the layer. For example, a Type II codebook refinement for high / medium speed, time-domain correlation / Doppler-domain information is used for CSI measurement and reporting. For example, Q Doppler-domain basis vectors are selected to obtain a Type II codebook. For example, in a Type II codebook refinement for high / medium speed, parameter Q or another parameter Q is used for time compression.

[0058] For Type II codebook refinement for high / medium speeds, the priority formulation can be extended. For example, the priority value is determined by the Doppler domain (DD) basis, FD basis, SD basis, and layer. For example, [ka] and [ka] is.

[0059] For Type II codebook refinement for high / medium speeds, the priority formulation can be extended. For example, the priority value is determined by the FD basis, DD basis, SD basis, and layer. For example, [ka] and [ka] For example, the priority value of each element is [ka] is determined by, where: [ka] and [ka] is.

[0060] For example, the priority value of each element is [ka] is determined by, where: [ka] and [ka] and [ka] is.

[0061] 12 shows an example method for channel state information measurement and reporting enhancement according to this implementation. At least one of the UE 104a or 104b or the BS 102 may perform the method 1200. At 1210, the method 1200 may transmit RS resources and configuration parameters, where the RS resources include CSI-RS resources and CSI-IM resources, and the configuration parameters include the CBSR. At 1220, the method 1200 may receive RS resources and configuration parameters, where the RS resources include CSI-RS resources and CSI-IM resources, and the configuration parameters include the CBSR. At 1230, the method 1200 may determine a CSI report based on the RS resources and the configuration parameters. At 1240, the method 1200 may transmit the CSI report. At 1250, the method 1200 may receive the CSI report determined by the UE based on the RS resources and the configuration parameters.

[0062] FIG. 13 shows an example method for channel state information measurement and reporting enhancement according to this implementation. At least one of the UE 104a or 104b or the BS 102 may perform the method 1300. At 1310, the method 1300 may receive reference signal resources and configuration parameters. At 1312, the method 1300 may receive reference signal resources and configuration parameters from a network by a wireless communication device. At 1314, the method 1300 may receive reference signal resources comprising CSI-RS resources and CSI-IM resources. At 1316, the method 1300 may receive configuration parameters comprising CBSR. At 1320, the method 1300 may determine a CSI report. At 1322, the method 1300 may determine a CSI report by the wireless communication device. At 1324, the method 1300 may determine the CSI report based on the reference signal resources and configuration parameters. At 1330, method 1300 can transmit the CSI report. At 1332, method 1300 can be transmitted by the wireless communication device to a network.

[0063] FIG. 14 shows an example method for channel state information measurement and reporting enhancement according to this implementation. At least one of the UE 104a or 104b or the BS 102 may perform the method 1400. At 1410, the method 1400 may transmit a plurality of reference signal resources and a plurality of configuration parameters. At 1412, the method 1400 may transmit the reference signal resources and the configuration parameters over a network to a wireless communication device. At 1414, the method 1400 may transmit the reference signal resources comprising CSI-RS resources and CSI-IM resources. At 1416, the method 1400 may transmit the configuration parameters comprising CBSR. At 1420, the method 1400 may receive a CSI report determined by the wireless communication device. At 1422, the method 1400 may receive a CSI report from the wireless communication device over a network. At 1424, the method 1400 may receive the CSI report based on the reference signal resources and the configuration parameters.

[0064] Finally, one aspect relates to determining, by a wireless communication device, that a CSI report includes a first CSI portion and a second CSI portion, the second CSI portion including Group 0, Group 1, and Group 2. Here, Group 1 includes a bitmap indicating pairs of non-zero coefficients associated with at least one precoder. The pairs may be associated with frequency domain basis vectors and Doppler domain basis vectors, spatial domain basis vectors and frequency domain basis vectors, or spatial domain basis vectors and Doppler domain basis vectors. Each of the at least one coefficient of the corresponding precoder may be associated with a priority value. The priority value may be determined based on an SD basis index, pair index, and layer index, a DD basis index, pair index, and layer index, or an FD basis index, pair index, and layer index. Group 2 may include a bitmap indicating the lowest priority of half of the non-zero coefficients associated with the precoder. Group 1 may include a bitmap indicating the highest priority of the remaining coefficients of Group 2 associated with the precoder.

[0065] For example, the method may include receiving, via wireless communication, from a network, higher layer parameters indicating that a codebook type can include a Type II codebook, where the CSI report is configured using a codebook corresponding to the codebook type. For example, the method may include receiving, via wireless communication, from the network, a plurality of channel measurement resources (CMRs) and at least one interference measurement resource (IMR) associated with the plurality of CMRs, where the plurality of CSI-RS resources can include the plurality of CMRs and the at least one IMR, where the CSI-IM resource can include the at least one IMR, and where the CSI report is configured for a coherent joint transmission (CJT) CSI report.

[0066] For example, in the method, the at least one IMR may include a plurality of IMRs. The method may include associating each of the plurality of CMRs with a respective one of the plurality of IMRs. For example, in the method, the at least one IMR may include a plurality of IMRs. The method may include associating one or more CMRs of the plurality of CMRs with a respective one of the plurality of IMRs. For example, in the method, the at least one IMR may include a single IMR. The method may include associating the plurality of CMRs with a single IMR. For example, in the method, the at least one IMR may include a plurality of non-zero power (NZP)-IMRs and a zero power (ZP)-IMR. The method may include associating each of the plurality of CMRs with a respective one of the plurality of NZP-IMRs. The method may include associating the plurality of CMRs with a single ZP-IMR. For example, in the method, the at least one IMR may include a plurality of non-zero power (NZP)-IMRs and a zero power (ZP)-IMR. The method may include associating at least one CMR of the plurality of CMRs with a respective one of the plurality of NZP-IMRs.The method may include associating the plurality of CMRs with one ZP-IMR.

[0067] For example, the method may include receiving, via wireless communication, a plurality of channel measurement resources (CMRs) from a network, where each of the plurality of CMRs is associated with a transmission reception point (TRP), and the CSI report is configured for a coherent joint transmission (CJT) CSI report. For example, in the method, the CBS may include a bitmap parameter having a plurality of bits, where the plurality of bits in the bitmap parameter indicate a maximum allowable average amplitude. The method may further include determining, by the wireless communication device, an average coefficient amplitude based on wideband amplitude and subband amplitudes across the plurality of CMRs, for each layer and each polarization. For example, in the method, the CBS may include a plurality of bitmap parameters having a plurality of bits, where the plurality of bits in each bitmap parameter indicate a maximum allowable average amplitude for a respective one of the plurality of CMRs. The method may further include determining, by the wireless communication device, an average coefficient amplitude based on wideband amplitude and subband amplitude for each layer, each polarization, and each of the plurality of CMRs.

[0068] For example, in the method, a plurality of vector groups may correspond to a plurality of CMRs, each of the plurality of vector groups being configured by the network. For example, in the method, a plurality of vector groups may correspond to a plurality of CMRs, each of the plurality of vector groups being determined based on the capabilities of the wireless communication device. For example, in the method, the CSI report may include a Doppler CSI report. For example, in the method, the CBSR may include a bitmap parameter having a plurality of bits, wherein the plurality of bits in the bitmap parameter indicate a maximum allowable average amplitude. The method may further include the wireless communication device determining, for each layer and each polarization, an average coefficient amplitude based on wideband amplitudes and subband amplitudes across several Doppler domain bases. For example, in the method, the CBSR may include a plurality of bitmap parameters each having a plurality of bits, wherein the plurality of bits in each bitmap parameter indicate a maximum allowable average amplitude for a respective Doppler domain basis vector. The method may include that the method may further include determining, by the wireless communication device, for each layer, each polarization, and each Doppler domain basis vector, an average coefficient amplitude based on the wideband amplitude and the sub-band amplitude.

[0069] For example, the plurality of vector groups can correspond to a plurality of Doppler domain basis vectors, each of the plurality of vector groups being four. The method can include the plurality of vector groups can correspond to a plurality of Doppler domain basis vectors, the plurality of vector groups being configured by a network. The method can include the plurality of vector groups can correspond to a plurality of Doppler domain basis vectors, each of the plurality of vector groups being determined based on capabilities of the wireless communication device.

[0070] For example, the method may include receiving, via wireless communication, from a network, a plurality of channel measurement resources (CMRs) and at least one interference measurement resource (IMR) associated with the plurality of CMRs, wherein the plurality of CSI-RS resources may include the plurality of CMRs and at least one IMR, and the CSI-IM resource may include the at least one IMR.

[0071] For example, the method may include receiving, via wireless communication, from a network, a plurality of channel measurement resources (CMRs) and at least one interference measurement resource (IMR) associated with the plurality of CMRs, wherein the plurality of CSI-RS resources may include a plurality of CMRs and at least one IMR, the CSI-IM resource may include at least one IMR, and the CSI report is configured for a Doppler CSI report.

[0072] For example, in the method, the at least one IMR may include multiple IMRs. The method may include associating one or more CMRs of the multiple CMRs with a respective one of the multiple IMRs. For example, in the method, the at least one IMR may include one IMR. The method may include associating multiple CMRs with an IMR. For example, in the method, the at least one IMR may include multiple non-zero power (NZP)-IMRs and one zero power (ZP)-IMR. The method may include associating each of the multiple CMRs with a respective one of the multiple NZP-IMRs. The method may include associating the multiple CMRs with one ZP-IMR. For example, in the method, the at least one IMR may include multiple non-zero power (NZP)-IMRs and one zero power (ZP)-IMR. The method may include associating one or more of the multiple CMRs with a respective one of the multiple NZP-IMRs. The method may include associating the multiple CMRs with one ZP-IMR.

[0073] For example, the method may include determining, by the wireless communication device, that the CSI may include at least one coefficient associated with at least one precoding matrix indicator (PMI). For example, in the method, each of the at least one coefficient is associated with a priority value. The method may include the priority value being determined by a DD basis, an FD basis, an SD basis, and a layer index. For example, in the method, the CSI report may include at least one element, and each of the at least one element may include a subband amplitude, a subband phase, and a position of the coefficient. The method may include each reported element being associated with a priority value.

[0074] For example, as described herein, various terminologies may be applied to aspects of this technical solution. However, this technical solution is not limited to the following terms, which are included for illustrative purposes. Therefore, aspects of this technical solution may relate to one or more of a discrete Fourier transform (DFT), a channel state information reference signal (CSI-RS), a precoding matrix indicator (PMI), a strongest coefficient indicator (SCI), a non-zero coefficient (NZC), and a multiple transmission reception point (MTRP).

[0075] The subject matter described herein may depict different components contained within or connected to different other components. It should be understood that the architectures depicted are exemplary, and that in fact many other architectures that achieve the same functionality may be implemented. In a conceptual sense, any arrangement of components to achieve the same functionality is effectively “associated” such that the desired functionality is achieved. Thus, any two components herein that are combined to achieve a particular function can be considered to be “associated” with each other such that the desired functionality is achieved, regardless of the architecture or intermediate components. Similarly, any two components so associated can also be considered to be “operably connected” or “operably coupled” to each other to achieve the desired functionality, and any two components that can be so associated can also be considered to be “operably coupleable” to each other to achieve the desired functionality. Specific examples of operably coupleable include, but are not limited to, physically matable and / or physically interacting components and / or wirelessly interacting and / or wirelessly interacting components and / or logically interacting and / or logically interacting components.

[0076] With respect to the use of plural and / or singular terms herein, those of skill in the art can convert from plural to singular and / or from singular to plural as appropriate to the context and / or application. Various singular / plural permutations may be expressly set forth herein for clarity.

[0077] In general, it will be understood by those skilled in the art that the terms used in this specification, and particularly in the appended claims (e.g., the body of the appended claims), are generally intended as "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," and the term "including" should be interpreted as "including but not limited to").

[0078] While the figures and description may indicate a particular order of method steps, the order of such steps may differ from that shown and described unless otherwise specified above. Also, unless otherwise specified above, two or more steps may be performed simultaneously or in partial parallel fashion. Such variations may depend, for example, on the software and hardware systems selected and the designer's preferences. All such variations are within the scope of this disclosure. Similarly, software implementations of the described methods may be achieved using standard programming techniques with rule-based logic and other logic to accomplish the various connection, processing, comparison, and decision steps.

[0079] When a specific number of introduced claim recitations is intended, such intention will be explicitly stated in the claim; absent such recitation, it will be further understood by those skilled in the art that no such intention exists. For example, to aid in understanding, the following appended claims may include the use of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be interpreted as meaning that the introduction of a claim recitation with the indefinite article "a" or "an" limits any particular claim that includes such an introduced claim recitation to a disclosure that includes only one such recitation, even if the same claim includes the introductory phrase "one or more" or "at least one" and an indefinite article such as "a" or "an" (e.g., "a" and / or "an" should typically be interpreted to mean "at least one" or "one or more"), and the same applies to the use of definite articles used to introduce claim recitations. Furthermore, even if a particular number of introduced claim recitations is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations" without other modifiers typically means at least two recitations, or two or more recitations).

[0080] Furthermore, when a convention similar to "at least one of A, B, and C, etc." is used, generally such a configuration is intended in the sense that one of ordinary skill in the art would understand the convention (e.g., "a system having at least one of A, B, and C" includes, but is not limited to, systems having A only, B only, C only, A and B together, A and C together, B and C together, and / or A, B, and C together, etc.). When a convention similar to "at least one of A, B, or C, etc." is used, generally such a configuration is intended in the sense that one of ordinary skill in the art would understand the convention (e.g., "a system having at least one of A, B, or C" includes, but is not limited to, systems having A only, B only, C only, A and B together, A and C together, B and C together, and / or A, B, and C together, etc.). It will be further understood by those skilled in the art that virtually any disjunctive word and / or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibility of including one of the terms, either of the terms, or both terms. For example, the phrase "A or B" is understood to include the possibilities of "A" or "B" or "A and B."

[0081] Additionally, unless otherwise specified, the use of words such as "approximate," "about," "around," "substantially," etc. means plus or minus 10%.

[0082] The foregoing description of exemplary implementations has been presented for purposes of illustration and description. It is not intended to be exhaustive or limiting with respect to the precise forms disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the disclosed implementations. It is intended that the scope of the present disclosure be defined by the appended claims and their equivalents.

Claims

1. 1. A wireless communication method, comprising: a wireless communication device receiving, from a network, a plurality of reference signal resources and a plurality of configuration parameters, the plurality of reference signal resources including a plurality of channel state information-reference signal (CSI-RS) resources and a plurality of channel state information-interference measurement (CSI-IM) resources, and the plurality of configuration parameters including a codebook subset restriction (CBSR); determining, by the wireless communication device, a channel state information (CSI) report based on the plurality of reference signal resources and the plurality of configuration parameters; the wireless communication device transmitting the CSI report to the network; A method comprising:

2. The method of claim 1 , wherein the CSI report is determined based on a codebook corresponding to a Type II codebook.

3. The method of claim 1 , wherein the CSI report is used for coherent joint transmission (CJT) CSI report.

4. 2. The method of claim 1, wherein the wireless communication includes receiving a plurality of channel measurement resources (CMRs) and at least one interference measurement resource (IMR) from the network, the plurality of CSI-RS resources including the plurality of CMRs and the at least one IMR, and the CSI-IM resource including the at least one IMR.

5. the at least one IMR includes a plurality of IMRs; The method of claim 4 , wherein each of the plurality of CMRs is associated with a respective one of the plurality of IMRs.

6. the at least one IMR includes a plurality of IMRs; The method of claim 4 , wherein one or more of the plurality of CMRs is associated with a respective one of the plurality of IMRs.

7. the at least one IMR includes one IMR; The method of claim 4 , wherein the multiple CMRs are associated with the single IMR.

8. the at least one IMR includes a plurality of non-zero power (NZP)-IMRs and one zero power (ZP)-IMR; each of the plurality of CMRs is associated with a respective one of the plurality of NZP-IMRs; The method of claim 4 , wherein the plurality of CMRs are associated with the single ZP-IMR.

9. the at least one IMR includes a plurality of non-zero power (NZP)-IMRs and one zero power (ZP)-IMR; At least one CMR of the plurality of CMRs is associated with a respective one of the plurality of NZP-IMRs; The method of claim 4 , wherein the plurality of CMRs are associated with the single ZP-IMR.

10. 10. The method of claim 1, wherein the wireless communication includes receiving a plurality of channel measurement resources (CMRs) from the network.

11. The method of claim 10 , wherein each of the plurality of CMRs is associated with a transmission reception point (TRP).

12. The method of claim 1 , wherein the CBSR comprises a bitmap parameter having a plurality of bits, the plurality of bits indicating a maximum allowable average amplitude.

13. 13. The method of claim 12, further comprising the wireless communication device determining, for each layer and each polarization, an average coefficient amplitude based on wideband and sub-band amplitudes across the plurality of CMRs according to the maximum allowed average amplitude.

14. 10. The method of claim 9, wherein the CBSR includes a plurality of bitmap parameters having a plurality of bits, the plurality of bits in each bitmap parameter indicating a maximum allowable average amplitude for a respective one of the plurality of CMRs.

15. 15. The method of claim 14, further comprising: the wireless communication device determining, for each layer, each polarization, and each of the plurality of CMRs, an average coefficient amplitude based on wideband and sub-band amplitudes of a corresponding CMR according to the maximum allowed average amplitude.

16. a plurality of vector groups corresponding to the plurality of CMRs, each of the plurality of vector groups being four; A plurality of vector groups correspond to the plurality of CMRs, and the plurality of vector groups are configured by the network; or The method of claim 14 , wherein a plurality of vector groups correspond to the plurality of CMRs, and each of the plurality of vector groups is determined based on a capability of the wireless communication device.

17. The method of claim 1 , wherein the CSI report is used for a Doppler CSI report, and the plurality of configuration parameters includes a number of Doppler domain bases.

18. The method of claim 1 , wherein the CBSR includes a bitmap parameter having a plurality of bits, the plurality of bits in the bitmap parameter indicating a maximum allowable average amplitude.

19. 20. The method of claim 18, further comprising the wireless communication device determining, for each layer and each polarization, an average coefficient amplitude based on wideband and sub-band amplitudes across several Doppler region bases according to the maximum allowable average amplitude.

20. 2. The method of claim 1, wherein the CBSR includes a plurality of bitmap parameters each having a plurality of bits, the plurality of bits in each bitmap parameter indicating a maximum allowable average amplitude for a respective Doppler domain basis.

21. 21. The method of claim 20, further comprising: the wireless communication device determining, for each layer, each polarization, and each Doppler domain basis vector, average coefficient amplitudes based on wideband and subband amplitudes of corresponding Doppler domain bases according to the maximum allowable average amplitudes.

22. a plurality of vector groups corresponding to a plurality of Doppler domain basis vectors, each of the plurality of vector groups being four; a plurality of vector groups corresponding to the plurality of Doppler domain basis vectors, the plurality of vector groups being configured by the network; or 21. The method of claim 20, wherein a plurality of vector groups correspond to the plurality of Doppler domain basis vectors, and each of the plurality of vector groups is determined based on capabilities of the wireless communication device.

23. 2. The method of claim 1, wherein the wireless communication includes receiving a plurality of channel measurement resources (CMRs) and at least one interference measurement resource (IMR) from the network, the plurality of CSI-RS resources including the plurality of CMRs and the at least one IMR, and the CSI-IM resource including the at least one IMR.

24. the at least one IMR includes a plurality of IMRs; 24. The method of claim 23, wherein one or more of the plurality of CMRs is associated with a respective one of the plurality of IMRs.

25. the at least one IMR includes one IMR; The method of claim 24 , wherein the plurality of CMRs are associated with the IMR.

26. the at least one IMR includes a plurality of non-zero power (NZP)-IMRs and one zero power (ZP)-IMR; each of the plurality of CMRs is associated with a respective one of the plurality of NZP-IMRs; The method of claim 23, wherein the multiple CMRs are associated with the one ZP-IMR.

27. the at least one IMR includes a plurality of non-zero power (NZP)-IMRs and one zero power (ZP)-IMR; one or more of the plurality of CMRs is associated with a respective one of the plurality of NZP-IMRs; The method of claim 23, wherein the multiple CMRs are associated with the one ZP-IMR.

28. 10. The method of claim 1, comprising a wireless communication device determining that the CSI report includes at least one coefficient associated with at least one precoder indicated by the CSI report.

29. each of the at least one coefficient is associated with a priority value; 29. The method of claim 28, wherein the priority value is determined based on a DD basis index, an FD basis index, an SD basis index and a layer index of the corresponding precoder.

30. determining that the CSI report includes CSI Part 1 and CSI Part 2; The method of claim 1 , wherein the CSI Part 2 includes Group 0, Group 1, and Group 2.

31. 31. The method of claim 30, wherein the group 1 includes a bitmap indicating the pairs of non-zero coefficients associated with at least one precoder.

32. The pair is Frequency domain basis vectors and Doppler domain basis vectors, spatial domain basis vectors and frequency domain basis vectors, or Spatial and Doppler domain basis vectors The method of claim 31 , wherein the

33. 26. The method of claim 25, wherein each of the at least one coefficient of the corresponding precoder is associated with a priority value.

34. The priority value is SD basis index, pair index and layer index, DD basis index, pair index and layer index, or FD basis index, pair index and layer index The method of claim 33, wherein the determination is based on

35. 31. The method of claim 30, wherein the group 2 includes a bitmap indicating the lowest priority of half of the non-zero coefficients associated with the precoder.

36. 31. The method of claim 30, wherein the group 1 includes a bitmap indicating the highest priority of the remaining coefficients in group 2 associated with the precoder.

37. A wireless communication device comprising at least one processor and a memory, the at least one processor configured to read code from the memory and to implement the method of claim 1.

38. 10. A computer program product having stored thereon a computer-readable program medium code that, when executed by at least one processor, causes the at least one processor to perform the method of claim 1.

39. 1. A wireless communication method, comprising: a network transmitting, to a wireless communication device, a plurality of reference signal resources and a plurality of configuration parameters, the plurality of reference signal resources including a channel state information-reference signal (CSI-RS) resource and a channel state information-interference measurement (CSI-IM) resource, and the plurality of configuration parameters including a codebook subset restriction (CBSR); the network receiving, from the wireless communication device, a channel state information (CSI) report determined by the wireless communication device based on the plurality of reference signal resources and the plurality of configuration parameters; A method comprising:

40. 40. A wireless communications device comprising at least one processor and a memory, the at least one processor configured to read code from the memory and to implement the method of claim 39.

41. 40. A computer program product having stored thereon a computer readable program medium code that, when executed by at least one processor, causes the at least one processor to perform the method of claim 39.

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