Channel state evaluation and reporting scheme in wireless communication

Abstract

Methods, systems, and devices are described for channel state assessment and reporting schemes in wireless communications. In one aspect, a method of wireless communication is provided to include transmitting, by a communication device, a channel state report message including at least one of a first field indicating a value of a parameter or a second field including a bias or rate of change of the parameter.

Description

[0001] This application is a divisional application of Chinese patent application No. 201980090161.5, filed on January 25, 2019, entitled "Channel State Assessment and Reporting Scheme in Wireless Communication". Technical Field

[0002] This patent application generally relates to systems, devices, and technologies for wireless communication. Background Technology

[0003] Wireless communication technology is propelling the world towards an increasingly interconnected and networked society. The rapid development and technological advancements in wireless communication have led to greater demands for capacity and connectivity. Other factors, such as energy consumption, equipment cost, spectrum efficiency, and latency, are also important for meeting the needs of various communication scenarios. Compared to existing wireless networks, next-generation systems and wireless communication technologies need to support an ever-growing number of users and devices. Summary of the Invention

[0004] This application relates to methods, systems, and apparatus for channel state assessment and reporting schemes in wireless communications. Some embodiments of the disclosed technology provide improved flexibility to meet the needs of a wider range of communication scenarios with high mobility and long round-trip times. Some embodiments of the disclosed technology can address issues including channel state information aging and signaling overhead.

[0005] In one aspect, a wireless communication method is provided, comprising transmitting a channel state reporting message by a communication device, the channel state reporting message including at least one of a first field indicating the value of a parameter or a second field including a deviation or rate of change of the parameter.

[0006] In another aspect, a wireless communication method is provided, comprising receiving a channel state reporting message by a network device, the channel state reporting message including at least one of a first field indicating the value of a parameter or a second field including the deviation or rate of change of the parameter.

[0007] In another aspect, a wireless communication device is disclosed, which includes a processor configured to perform the disclosed method.

[0008] In another aspect, a computer-readable medium having code stored thereon is disclosed. When implemented by a processor, the code causes the processor to implement the methods described in this application.

[0009] The foregoing and other aspects and their embodiments are described in more detail in the accompanying drawings, description and claims. Attached Figure Description

[0010] Figure 1 Examples of base stations (BS) and user equipment (UE) in wireless communication based on some implementations of the disclosed technology are shown.

[0011] Figure 2 An example block diagram of a portion of an apparatus based on some embodiments of the disclosed technology is shown.

[0012] Figure 3 Examples of channel state assessment and reporting schemes performed on communication devices based on some implementations of the disclosed technology are shown.

[0013] Figure 4 Examples of channel state assessment and reporting schemes performed on network devices based on some implementations of the disclosed technology are shown.

[0014] Figure 5 An example of a channel state assessment and reporting scheme is shown when the channel state reporting configuration includes one or more offset CQIs.

[0015] Figure 6 An example of a channel state assessment and reporting scheme is shown when the channel state reporting configuration includes the rate of change of CQI.

[0016] Figure 7 Another example of a channel state assessment and reporting scheme is shown when the channel state reporting configuration includes the rate of change of CQI.

[0017] Figure 8 An example of a framework for CSI trigger configuration based on some implementations of the disclosed technology is shown.

[0018] Figure 9 An example of a channel state assessment and reporting scheme is shown when the channel state reporting configuration includes the offset RSRP.

[0019] Figure 10 An example of a channel state assessment and reporting scheme is shown when the channel state reporting configuration includes the rate of change of RSRP.

[0020] Figure 11 An example of a channel state assessment and reporting scheme is shown when the channel state reporting configuration includes the deviation SINR.

[0021] Figure 12 An example of a channel state assessment and reporting scheme is shown when the channel state reporting configuration includes the rate of change of SINR. Detailed Implementation

[0022] The use of chapter headings in this application is for ease of understanding only, and the scope of the embodiments and techniques described in each chapter is not limited to that chapter. Furthermore, while the term 5G is used in some cases to aid in understanding the disclosed technologies, it can be applied to wireless systems and devices using communication protocols other than 5G or 3GPP protocols.

[0023] The disclosed techniques can be implemented to provide channel state assessment and reporting schemes in wireless communications. Some implementations of the disclosed techniques provide novel channel state assessment and reporting schemes in wireless communications, which can provide improved flexibility to support a wider range of scenarios while addressing signaling overhead.

[0024] With the rapid development of wireless communication technology, applications in various vertical fields are flourishing. To meet the ever-increasing communication demands, fifth-generation mobile communication (5G) technology and further enhancements based on 5G have become the future trend of wireless communication. With the evolution of wireless communication technology, new scenarios with high mobility and long round-trip time (RTT) have emerged, and current existing mechanisms have limited capacity to handle these scenarios. For example, in existing systems, for downlink (DL) transmission, Channel State Information (CSI) is obtained based on dedicated resources (i.e., CSI-RS (CSI Reference Signal), CRS (Cell-Specific Reference Signal), or SSB (SS / PBCH block for BM only)). The reporting and calculation of the corresponding content are determined by configuration information (e.g., CQI in a periodic / semi-persistent or aperiodic manner).

[0025] However, current mechanisms face issues such as CSI aging and RS overhead. Firstly, regarding CSI aging, in scenarios with high mobility or long RTT, reported channel state information will age for proper scheduling. For example, with high mobility, channel conditions change rapidly with varying channel gain and main path. Therefore, a CSI obtained at time t1 will age at the next time t2, leading to improper configurations for scheduling, such as MCS (modulation and coding scheme) configuration and rank. To address the aging problem in dynamically changing scenarios, more frequent reporting in a periodic manner could be considered. However, this leads to high reporting overhead due to the repeated transmission of redundant information with the same reporting format. In scenarios with long RTT, even with relatively low or normal mobility, received CSIs may expire after long transmission times, making effective scheduling difficult.

[0026] Second, regarding RS overhead, in existing solutions, CSI is calculated based on associated RSs (e.g., CSI-RS, SSB, which is dedicated to CSI calculation, or even CQI updates for BS-side transmission precoding without changes). To support more frequent reporting, multiple AP RS triggers or more intensive semi / periodic RS transmissions are required, which will lead to greater RS ​​overhead for CSI reporting and updates.

[0027] Recognizing the aforementioned problems, the disclosed technologies provide various implementations of channel state assessment and reporting schemes, which can offer more flexible and effective methods for channel state assessment and reporting. Furthermore, the disclosed technologies can support new scenarios with high mobility and long RTT, such as HST and non-terrestrial communications with satellites.

[0028] Figure 1 An example of a wireless communication system (e.g., a 5G or NR cellular network) including a BS 120 and one or more user equipments (UEs) 111, 112, 113 is shown. In some embodiments, the UE accesses the BS (e.g., a network) using implementations of the disclosed technologies (131, 132, 133), which then enables subsequent communication from the BS to the UE (141, 142, 143). The UE may be, for example, a smartphone, tablet, mobile computer, machine-to-machine (M2M) device, Internet of Things (IoT) device, etc.

[0029] Figure 2 An example block diagram representing a portion of the apparatus is shown. Apparatus 210, such as a base station or wireless device (or UE), may include processor electronics 220, such as a microprocessor implementing one or more technologies presented in this application. Apparatus 210 may include transceiver electronics 230 for transmitting and / or receiving wireless signals via one or more communication interfaces, such as an antenna 240. Apparatus 210 may include other communication interfaces for transmitting and receiving data. Apparatus 210 may include one or more memories (not shown) configured to store information such as data and / or instructions. In some embodiments, processor electronics 220 may include at least a portion of transceiver electronics 230. In some embodiments, apparatus 210 is used to implement at least some of the disclosed technologies, modules, or functions.

[0030] Figure 3 Examples of channel state assessment and reporting schemes performed on communication devices based on some embodiments of the disclosed technology are shown. In some embodiments, the channel state assessment and reporting scheme includes the communication device transmitting a channel state reporting message, which includes at least one of a first field indicating the value of a parameter or a second field including the deviation or rate of change of the parameter.

[0031] Figure 4 Examples of channel state assessment and reporting schemes performed on network devices based on some embodiments of the disclosed technology are shown. In some embodiments, the channel state assessment and reporting scheme includes the network device receiving a channel state reporting message, which includes at least one of a first field indicating the value of a parameter or a second field including the deviation or rate of change of the parameter.

[0032] The channel state reporting message may include a channel state reporting message, which includes at least one of the following:

[0033] -PMI (Precoding Matrix Indicator)

[0034] -CQI0: Reference CQI (Channel Quality Indicator)

[0035] -RSRP0: Reference RSRP (Reference Signal Received Power)

[0036] -SINR0: Reference SINR (Signal-to-Interference-Ratio)

[0037] -RI (rank indicator)

[0038] -CRI (CSI-RS Resource Index)

[0039] -SSB (Synchronization Signal Block) Index

[0040] -Delta CQIx The Xth deviation of CQI

[0041] -R CQI Rate of change of CQI

[0042] -Delta RSRPx The Xth deviation of RSRPI

[0043] -R RSRP Rate of change of RSRP

[0044] -Delta SINRx The Xth deviation of SINR

[0045] -R SINR Rate of change of SINR

[0046] -R CQI R RSRP Or R SINR Granularity index

[0047] -R CQI R RSRP Or R SINR granularity value

[0048] The above parameters can be grouped into the first or second field of the channel state reporting message. The first field of the channel state reporting message may include at least one of the following: CQI0, RSRP0, SINR0, PMI, RI, CRI, SSB-Index, or a first granularity indicator. The second field of the channel state reporting message may include at least one of the following: Delta CQIx R CQI Delta RSRPx R RSRP Delta SINRx R SINR The first or second granularity indicator may be an index to a value that can be organized as a table or list, or the indicator may be a value itself. Parameters included in the second field of the channel state reporting message may correspond to the first field of the channel state reporting message. The reporting of the first and second fields of the channel state reporting message may be triggered together via the same channel state reporting configuration, or may be triggered separately via different channel state reporting configurations. The triggering mechanism will be discussed in detail later in this application.

[0049] Configure channel status reporting message

[0050] The configuration for executing channel state reporting messages can include at least one of the following: i) reporting quantity configuration, ii) reporting resource configuration and priority rules, or iii) UE capabilities for CSI calculation and / or reporting.

[0051] Item 1: Reporting Quantity Configuration

[0052] The reporting quantity configuration is transmitted in response to at least one of the channel state reporting configuration or the triggering of channel state reporting, and is received by the communication device from the network device (e.g., BS). In the example below, the configuration information includes the deviation of CQI (X deviations in CQI) or the rate of change of CQI (R). CQI At least one of them.

[0053] Scenario 1: CQI Deviation

[0054] The reported quantity must include at least the CQI deviation. In some implementations, one or more corresponding sets of CRI, PMI, RI, and CQI0 may be reported along with the CQI deviation. If there are no reports regarding CRI, CQI0, PMI, and RI, the CQI deviation is calculated based on the latest or previously reported PMI / RI / CQI0. In this case, the CQI deviation refers to the CQI change based on the latest CQI or a reference CQI (CQI0). In some implementations, when X deviation CQIs refer to the corresponding PMI / RI / CRI, the channel state reporting configuration may include a reference CQI (CQI0) and X deviation CQIs.

[0055] Figure 5 An example of a channel state assessment and reporting scheme is shown when the channel state reporting configuration includes one or more offset CQIs. References Figure 5 At time t0, the BS transmits a channel state reporting configuration, including one or more offset CQIs, to the UE. At time t1 (t1≥t0), the channel state reporting message is triggered by the BS using any of the periodic, semi-persistent, or aperiodic (AP) mechanisms. The triggering mechanism can include at least one of the following: 1) If a channel state reporting configuration contains parameters corresponding to the first and second fields, the first and second fields of the channel state reporting message are triggered by a single signaling. 2) If the parameters corresponding to the first and second fields belong to different channel state reporting configurations, the first and second fields can be triggered by different signaling. 3) If a channel state reporting configuration contains parameters corresponding to the first and second fields, the first and second fields can be triggered by different signaling. For case iii), the triggering can be completed in two steps. For triggering mechanisms 1) and 3), although all parameters corresponding to the first and second fields are included as reporting quantities in a single channel state reporting configuration, whether the triggering is based on a single signaling or different signaling depends on the reporting type and scheduling mechanism from the BS. In some implementations where the reporting type is periodic, once configured, both the first and second fields will be triggered by the same signaling. In some implementations where the reporting type is non-periodic, the first-level DCI can be used to trigger the reporting of the first field, and the second-level DCI can be used to trigger the reporting of the second field if necessary.

[0056] Although now Figure 5As shown, however, after triggering a channel state reporting message, a mechanism can be provided to disable either the first or second field of the channel state reporting message. In some implementations, when the reporting type is periodic, to save reporting resources, MAC-CE or DCI can be used to disable either the first or second field of the channel state reporting message, even if the first and second fields are triggered together in a single signaling message. In various implementations, the condition for disabling one of the first or second fields of the channel state reporting message can be set accordingly based on the communication scenario.

[0057] In response to this trigger, the UE transmits a channel state reporting message including at least one of a first field (e.g., a reference CQI) or a second field (e.g., one or more offset CQIs). In some embodiments, the reporting of the first field and the reporting of the second field of the channel state reporting message can be transmitted simultaneously. In some embodiments, the reporting of the first field and the reporting of the second field of the channel state reporting message can be transmitted at different times. To report the first and second fields at different times, a time offset can be configured such that the time requirements for calculating / reporting the first and second fields of the channel state reporting message are met. Figure 5 In the specific example shown, the reporting of the first field of the channel state reporting message and the reporting of the second field of the channel state reporting message are transmitted at different times. Additionally, in Figure 5 In this context, the reporting of the second field of the channel state reporting message is transmitted at different times.

[0058] like Figure 5 As shown, at time t2, the UE transmits the first field of its channel state reporting message, which includes at least one of CQI_0, PMI, and RI. At time t3, obtained from equation t2+Δt*1, the UE transmits the second field of the channel state reporting message, Delta CQI_1. At time t4, obtained from equation t2+Δt*2, the UE transmits the second field of the channel state reporting message, Delta CQI_2. At time t... x At this point, the UE transmits the second field, Delta CQI_X, of the Channel Status Reporting message. In this example, Δt refers to the reporting pre-configured time offset, which indicates the time distance between two adjacent transmissions in the CQI reporting.

[0059] The second field calculation (e.g., calculating the deviation CQI(Delta CQI_x)) can be performed using at least one of Equation 1 (for Mode 1) or Equation 2 (for Mode 2):

[0060] Delta_CQI_x=CQI measurNew-CQI0 [Equation 1]

[0061]

[0062] In equations 1 and 2, CQI measureNew This refers to reporting Delta based on the corresponding PMI / RI / CRI values. CQIx The latest CQI calculated previously on the UE side. In some implementations, CQI... measureNew This is after the latest report using gap Δt_z1 and the Delta report using gap Δt_z2. CQIx Calculated before the specified time. In some implementations, CQI0 and Delta... CQIx Quantization will be achieved through different granularities and bit lengths. In some implementations, Delta... CQIx Its bit length is less than CQI0.

[0063] Scenario 2: Rate of Change of CQI

[0064] The reported quantities should include at least the rate of change of the CQI (RC). QI In some implementations, one or more corresponding sets of CRI, CQI, PMI, and RI may also be associated with R. CQI They are reported together. If there are no reports on one or more corresponding sets, the CQI deviation is calculated based on the latest or previously reported PMI / RI / CQI. In this case, R CQI Using time granularity G t Or frequency granularity G f The calculation is based on the latest or previously reported PMI / RI / CQI.

[0065] To determine the particle size, at least one of the following methods can be considered:

[0066] 1. Granularity can be configured by the BS using L values ​​(L>=1). If more than one value is configured (i.e., L>1), the UE will select one and match the selected index with CRI / CQI / PMI / RI or R. CQI Report them together. If only one value is configured (i.e., L=1), the UE does not need to report its value.

[0067] 2. The granularity can be configured from a predefined table with L values ​​(L > 1). In this case, the UE will select one of the values ​​based on signaling from the BS.

[0068] 3. When there is no pre-configured value, the UE will determine the value itself and report the determined value directly to the BS.

[0069] Given a defined granularity, the calculation of the second field (e.g., calculating the rate of change of CQI) can be performed using, for example, Equation 3 (for Mode 1):

[0070] R CQI =(CQI) measurNew -CQI0) / granularity [Equation 3]

[0071] In Equation 3, CQI measureNew This refers to reporting R based on the corresponding PMI / RI / CRI values. CQI The latest CQI calculated previously on the UE side. In some implementations, CQI... measureNew This is after the latest report using gap Δt_z1 and the Delta report using gap Δt_z2. CQＩx Calculated before the specified time. In some implementations, CQI0 and R... CQI Quantization will be performed using different granularities and bit lengths. In some implementations, R CQI The bit length is less than CQI0. In some embodiments, granularity refers to a duration or frequency unit used to evaluate the variation of a parameter (e.g., CQI) over a given duration or frequency unit. In some embodiments, multiple granularities may also be determined. In this case, each granularity corresponds to a different domain, such as the time domain or the frequency domain. Granularity determination can be performed through configuration or UE selection.

[0072] Once reporting is triggered by any of the periodic / semi / AP methods, the required reporting content (e.g., including parameters (e.g., referencing CQI and R)) must be included. CQI The reports will be submitted at different times or at the same time.

[0073] Figure 6 This shows the configuration when the channel state reporting includes R. CQI An example of a channel state assessment and reporting scheme. Figure 6 At time t0, the BS transmits at least R to the UE. CQI The channel state reporting configuration. At time t1 (t1≥t0), the configuration is triggered by the BS via periodic, semi, or AP triggering. (Already referenced...) Figure 5 The triggering mechanism has been explained, and a similar explanation can be applied here. In response to this trigger, at time t2, the UE transmits the first field of a channel state reporting message, which includes at least one of CQI_0, PMI, and RI. At time t3, obtained from equation t2+Δt, the UE transmits a message including R... CQI The second field of the channel status reporting message. Therefore, in such... Figure 6 In the specific implementation shown, reference is made to CQI and RCQI Reported at different times t2 and t3. For example, regarding... Figure 5 As illustrated in the example, in order to report the first and second fields at different times, a time offset can be configured so that the time requirements for calculating / reporting the first and second fields of the channel state reporting message are met. In some implementations, the pre-configured reporting offset Δt is greater than G. t .

[0074] Figure 7 This shows the configuration when the channel state reporting includes R. CQI Another example of a channel state assessment and reporting scheme. Figure 7 At time t0, the BS transmits at least R to the UE. CQI The channel state reporting configuration. At time t1 (t1≥t0), the configuration is triggered by the BS via periodic, semi, or AP triggering. (Already referenced...) Figure 5 The triggering mechanism has been explained, and a similar explanation can be applied here. In response to this trigger, at time t2 obtained from equation t1+Δt, the UE transmits the first field of a channel state reporting message, which includes at least one of CQI_0, PMI, and RI; and transmits information including R... CQI The second field of the channel status reporting message is reported. Therefore, in situations such as Figure 6 In the specific implementation shown, reference is made to CQI and R CQI Reported at the same time t2. In some implementations, the pre-configured reporting offset Δt is greater than G. t .

[0075] In some implementations, R CQI CQI can be considered in the presence of gap G t The calculation is based on one or more differences at a given time. Filtering multiple values ​​can be seen as a solution. In some implementations, reported parameters (e.g., referencing CQI and R) are used. CQI The effective duration of the timer can also be configured by the UE based on channel state reporting. Once the timer expires or the verification window is exceeded, the UE will update the value through another report, or the BS should trigger another round of reporting.

[0076] In the examples of Cases 1 and 2, two modes (Mode 1 and Mode 2) for calculating the deviation of the CQI and one mode (Mode 1) for calculating the rate of change of the CQI have been discussed. Modes used for calculating the second field, such as Mode 1 and Mode 2 for calculating the deviation of the CQI and Mode 1 for calculating the rate of change of the CQI, can be included in the second field. The mode used for calculating the second field can be determined by at least one of the following methods:

[0077] 1. In the channel state reporting configuration, the reporting quantity (e.g., at least the second field of the channel state reporting message) is configured together with the mode used for calculating the second field.

[0078] 2. In the channel state reporting configuration, configure the reporting quantity (e.g., at least the second field of the channel state reporting message). The UE will select the mode used for calculating the second field.

[0079] In some implementations, the mode selection can be further extended to define a channel state reporting mechanism that takes into account the potential applications of AI (artificial intelligence). In this case, the CSI reporting mechanism will include at least one of the following:

[0080] 1. Calculation Mode. A calculation mode is used to determine how to calculate channel state information. For a calculation mode, one or more modes are indexed by at least one of a corresponding set of input parameters and output parameters. Here, the output parameters may be the content of a channel state reporting message, such as a first field and / or a second field and / or extracted parameters for channel condition modeling (e.g., Doppler spread, Doppler shift, delay spread, delay shift). Input parameters may include, for example, the granularity used for calculation (e.g., bandwidth including broadband or sub-bands, or frequency range or duration), filtering parameters for CSI smoothing, or weights or RS indices used for calculation (e.g., RS configuration / mode index). Alternatively, if multiple methods are explicitly defined for a calculation mode in the specification, the method index may also be one of the input parameters. In some implementations, the mapping between method indices and calculation modes is one-to-one. In some implementations, only the required parameters are explicitly mentioned without defining a method for calculating the second field, simply for implementation purposes.

[0081] 2. Reporting Mode. The reporting mode is used to determine at least one of the following: 1. How to report channel state information, e.g., periodically / or via AP; 2. Resources used for reporting (e.g., single or individual reporting of channel state reporting messages).

[0082] 3. Content to be reported

[0083] 4. The granularity used for reporting, such as broadband or sub-band.

[0084] For the calculation mode, resource configuration for calculating channel state information may also be included. Furthermore, the calculation mode may be part of the configuration of the reporting mode, or it may be independent of the configuration of the reporting mode. Alternatively, if the calculation mode is part of the reporting mode, then the calculation index will be part of the content of the reporting mode. In some implementations, if the reporting type is periodic, the calculation mode may be part of the configuration of the reporting mode. Otherwise, the calculation mode is independent of the configuration of the reporting mode.

[0085] The triggering mechanisms (e.g., timing and signaling) used for computation mode and reporting mode can also be the same or different. Figure 8 An example of a framework for CSI trigger configuration is shown. Figure 8 As shown, the association between computing mode, resource mode / configuration, and reporting mode will be completed within the corresponding trigger configuration (e.g., the index of these modes), and this configuration will be part of the content of the trigger configuration.

[0086] In the examples of cases 1 and 2, the parameter CQI is used so that the deviation of CQI is transmitted in case 1 and the rate of change of CQI is transmitted in case 2. In some implementations, other parameters such as RSRP or SINR can be used instead of CQI. By replacing the parameter of CQI with the parameter of RSRP or SINR, most of the interpretation for case 1 is applied to cases 3 and 5, while most of the interpretation for case 2 is applied to cases 4 and 6.

[0087] Scenario 3: RSRP deviation

[0088] Figure 9 An example of a channel state assessment and reporting scheme is shown when the channel state reporting configuration includes a deviation RSRP. The process is similar to the configuration and operation of CQI in Case 1. In this case, the RSRP deviation can be configured along with the reporting of CRI or SSB-index.

[0089] Case 4: Rate of change of RSRP

[0090] Figure 10 An example of a channel state assessment and reporting scheme is shown when the channel state reporting configuration includes the rate of change of RSRP. The process is similar to the configuration and operation of CQI in Case 2. In this case, the rate of change of RSRP can be configured along with the reporting of CRI or SSB-index. Although Figure 9 The report shows the first field (e.g., RSRP_0 / CRI / SSB-index) and the second field (e.g., R...). RSRP Examples of reports being transmitted at different times, but the first and second fields may also be transmitted simultaneously.

[0091] Case 5: SINR deviation

[0092] Figure 11 An example of a channel state assessment and reporting scheme is shown when the channel state reporting configuration includes a deviation SINR. The process is similar to the configuration and operation of CQI in Case 1. In this case, the SINR deviation can be configured along with the reporting of either CRI or SSB-index.

[0093] Case 6: Rate of change of SINR

[0094] Figure 12 An example of a channel state assessment and reporting scheme is shown when the channel state reporting configuration includes the rate of change of SINR. The process is similar to the configuration and operation of CQI in Case 2. In this case, the rate of change of SINR can be configured along with the reporting of CRI or SSB-index. Although Figure 11 The report shows the first field (e.g., SINR_0 / CRI / SSB-index) and the second field (e.g., R...). SINR Examples of reports being transmitted at different times, but the first and second fields may also be transmitted simultaneously.

[0095] For cases 1 to 6, it should be noted that: 1) the CQI / RSRP / SINR in the first field of the channel state reporting message is calculated based on the corresponding PMI / RI / CRI / SSB indices listed in the first field of the channel state reporting message or previously reported; and 2) the second field of the channel state reporting message is calculated based on the corresponding values ​​listed in item 1) above. If multiple sets of CQI / RSRP / SINR and PMI / RI / CRI / SSB are needed in the first field, a one-to-one mapping between the first and second fields of the channel state reporting message can be followed. In some implementations, the strategy for reporting multiple sets of the first CQI may include different sets of "PMI and / or RI and / or CQI and / or CRI" for different frequency bands or for optimal and suboptimal results. The optimal PMI is similar to the adjacent PMI (here, adjacent refers to the spatial orientation of the represented precoding matrix). In some embodiments, the number of sets may also be indicated by the network device.

[0096] Item 2: Reporting resource allocation and priority rules

[0097] Scenario 1: Reporting resource allocation

[0098] To support channel state reporting messages that include at least one of the first and second fields, different time offsets can be configured for reporting each field. Each component will be carried by either the PUCCH (Physical Uplink Control Channel) or the PUSCH (Physical Uplink Shared Channel), satisfying time constraints between offset, CSI calculation, and resource preparation. In some embodiments, the time offset refers to the offset within a time period, such as a slot offset or symbol offset spanning multiple slots or symbols within the reporting time period. In some embodiments, the time offset refers to the time offset between reporting and reception triggered by a CSI report.

[0099] In some implementations, the BS may indicate one or more resources for calculating channel state information, including any one of a DM-RS (demodulation reference signal), a CSI-RS for CSI, or a CSI-RS for tracking. In some implementations, the one or more resources for calculating channel state information may be indicated to satisfy at least one of the following: i) indicating the same or different resources for the first and second fields, ii) using the DM-RS for the second field, or iii) configuring a power offset between the one or more resources if different resources are indicated for the first and second fields.

[0100] Case 2: Priority Rules

[0101] At least one of the following rules can be set to support channel state reporting messages, which includes at least one of the first and second fields of the channel state reporting message.

[0102] Rule 1: The first field of the channel state reporting message takes precedence over the corresponding second field of the channel state reporting message.

[0103] Rule-2: When multiple sets of channel state reporting messages are reported, the second field of the i-th group of channel state reporting messages takes precedence over the j-th group of channel state reporting messages. <j。

[0104] Rule 3: Reports triggered in different ways follow the following priority order: AP > Semi > P.

[0105] Rule 4: Channel state reporting messages for broadband take precedence over sub-band results.

[0106] Rule 5: In the second field of the channel state reporting message (e.g., DeltaCQI_x / Delta_RSRP / Delta_SINR), if the k-th value of DeltaCQI_x / Delta_RSRP / Delta_SINR and the l-th value of DeltaCQI_x / Delta_RSRP / Delta_SINR will be reported in the same resource (i.e., the same PUSCH / PUCCH), then the k-th value of DeltaCQI_x / Delta_RSRP / Delta_SINR will be discarded, where l>k;

[0107] Rule 6: In the second field of the channel state reporting message (e.g., DeltaCQI_x / Delta_RSRP / Delta_SINR), if the k-th value of DeltaCQI_x / Delta_RSRP / Delta_SINR and the l-th value of DeltaCQI_x / Delta_RSRP / Delta_SINR will be reported in different resources (e.g., PUSCH and PUCCH) but in the same scheduling unit (e.g., time slot) used for transmission, then the k-th value of DeltaCQI_x / Delta_RSRP / Delta_SINR will be discarded, where l>k;

[0108] Rule 7: If processing of the first channel state report message and / or the second channel state report message is to be stopped, another report of the first channel state report message shall be triggered unless there is another instruction from the BS to maintain such parallel processing and within the UE's capabilities.

[0109] Item 3: UE capabilities used for channel state calculation and / or reporting

[0110] Scenario 1: The UE reports whether it supports the channel state calculation and reporting proposed in this patent application. If the UE does not support it, this configuration will not be enabled for the UE.

[0111] Case 2: If the resources required to support the calculations and reporting proposed in this patent application exceed the available resources / units in time or duration, the channel state reporting message will be discarded according to the predefined priority rule defined as rule-2.

[0112] Implementation method: Configuration of resources used for reporting

[0113] In this example, to support channel state reporting messages that include at least one of the first and second fields, the relevant resources used to calculate, for example, the second field, include DM-RS (Demodulation Reference Signal), which is allocated for transmission via DCI (Downlink Control Information) for dynamic scheduling or PDSCH (Physical Downlink Shared Channel) configured with authorized RRC (Radio Resource Control) for configuration. Furthermore, the following example can be implemented.

[0114] Scenario 1: For channel state reporting configurations that include both the first and second fields of the channel state reporting message, different resources can be configured for the channel state calculation of the first and second fields. For example, CSI-RS or SSB can be configured in the configuration for the first field, and DM-RS can be instructed through configuration or predefined rules to obtain the second field of the channel state reporting message. Before the RS used for the second field of the channel state reporting message, the resources used for the first field of the channel state reporting message can be transmitted by the BS or received by the UE.

[0115] Scenario 2: For channel state reporting configured to include only the second field of the channel state reporting message, the DM-RS is instructed via configuration or predefined rules to obtain the second field of the channel state reporting message. If channel state reporting is triggered by the AP, the bits used for channel state reporting need to be in the same DCI as the scheduling bits used for PDSCH and DM-RS allocation. The DM-RS can obtain the indication of the second field of the channel state reporting message in any of the following ways:

[0116] 1) Configuration: In the channel state reporting configuration, a set of DM-RS indices (e.g., port indices) will be configured via RRC or MAC CE signaling. Once scheduling is complete, the second field of the channel state reporting message is calculated based on the DM-RS indices according to the scheduled transport.

[0117] 2) Predefined rule: There is no dedicated signaling for the RS configuration associated with the reporting configuration. Once channel state reporting is triggered, the UE will attempt to obtain the second field of the channel state reporting message based on the DM-RS allocated for PDSCH transmission.

[0118] If different RSs are used, the power offset between the RSs in the first and second fields of the channel state reporting message can also be indicated via signaling delta_P to assist in CSI calculation.

[0119] The following uses a clause-based description format to describe additional features and embodiments of the methods / techniques discussed above.

[0120] 1. A wireless communication method, comprising: transmitting a channel status reporting message by a communication device, the channel status reporting message including at least one of a first field indicating the value of a parameter or a second field including the deviation or rate of change of the parameter.

[0121] 2. The wireless communication method according to Clause 1, wherein the channel state reporting message is transmitted in response to a channel state reporting configuration received by the communication device from the network device or a triggering of a channel state report received by the communication device from the network device.

[0122] 3. The wireless communication method according to Clause 2, wherein, based on the channel state reporting configuration, the triggering of channel state reporting is performed by using a single signaling or multiple signaling signals.

[0123] 4. The wireless communication method according to Clause 1, wherein the value of the parameter includes the value of CQI (Channel Quality Indicator), the value of RSRP (Reference Signal Received Power), or the value of SINR (Signal-to-Interference-plus-Noise Ratio), and the deviation or rate of change of the parameter includes the deviation or rate of change of CQI, RSRP, or SINR.

[0124] 5. The wireless communication method according to Clause 1, wherein the first field further includes at least one of PMI (precoding matrix indicator), RI (rank indicator), CRI (CSI-RS resource index), SSB (synchronization signal block) index or a first granularity indicator, and the second field further includes a second granularity indicator or a pattern for calculating the second field.

[0125] 6. The wireless communication method according to Clause 5, wherein at least one of the first granularity indicator or the second granularity indicator is configured by a network device, or configured according to a predefined table, or determined by a communication device according to a predefined table.

[0126] 7. The wireless communication method according to Clause 1 further includes calculating the second field by means of a calculation mode determined by a predefined channel state reporting configuration received by the communication device from the network device or selected by the communication device from a predefined candidate set.

[0127] 8. The wireless communication method according to Clause 7, wherein the computing mode is defined by using at least one of the following:

[0128] Equation 1: P measurNew -P0,

[0129] Equation 2: or

[0130] Equation 3: (P measurNew -P0) / granularity,

[0131] Among them, P measureNew This refers to the latest parameter value obtained at the communication device, and P0 refers to the value of that parameter.

[0132] Equations 1 and 2 are defined as calculating the x-th deviation of the parameters in the first and second modes, respectively, and Equation 3 is defined as calculating the rate of change of the parameters in the third mode.

[0133] 9. The wireless communication method according to Clause 1, wherein the first field and the second field are transmitted simultaneously.

[0134] 10. The wireless communication method according to Clause 1, wherein the first field and the second field are transmitted at different times, the different times having time offsets that satisfy the time requirements for transmitting the channel status reporting message, the time offsets corresponding to the first field and the second field respectively.

[0135] 11. The wireless communication method according to Clause 1 further includes resources configured for transmitting the channel status reporting message, wherein different resources are respectively configured for the first field and the second field.

[0136] 12. The wireless communication method according to Clause 1, wherein at least one of the first field or the second field is transmitted via PUCCH (Physical Uplink Control Channel) or PUSCH (Physical Uplink Shared Channel).

[0137] 13. The wireless communication method according to Clause 1 further includes the transmission of the channel state reporting message by a communication device according to priority rules configured or predefined by a network device.

[0138] 14. The wireless communication method according to clause 13, wherein the priority rule includes at least one of the following: i) the first field of the channel state reporting message takes precedence over the corresponding second field of the channel state reporting message; ii) when the wireless communication method further includes transmitting an additional channel state reporting message, the second field of the i-th group of channel state reporting messages takes precedence over the second field of the j-th group of channel state reporting messages, where i and j are natural numbers satisfying i < j; iii) the trigger of channel state reporting has a priority order of aperiodic > semi-persistent > periodic; iv) the channel state reporting message of the wideband takes precedence over the channel state reporting message of the sub-band; v) if the k-th value and the l-th value in the second field of the channel state reporting message are reported in the same resource, the k-th value is discarded, where k and l are natural numbers satisfying l > k; vi) if the k-th value and the l-th value in the second field of the channel state reporting message are reported in different resources and within the same transmission unit, the k-th value is discarded, where k and l are natural numbers satisfying l > k; or vii) when the wireless communication method further includes transmitting an additional channel state reporting message, if the processing of the channel state reporting message or the additional channel state reporting message is stopped, the channel state reporting message is triggered again.

[0139] 15. The wireless communication method according to clause 1 further includes reporting the capabilities of the communication device, which indicates whether the communication device supports a channel state reporting message including at least one of the first field or the second field.

[0140] 16. The wireless communication method according to clause 1 further includes obtaining the second field based on one of DM-RS (demodulation reference signal), CSI-RS (CSI reference signal) for CSI, or CSI-RS for tracking.

[0141] 17. A wireless communication method includes a network device receiving a channel state reporting message, which includes at least one of a first field indicating a value of a parameter or a second field including a deviation or a rate of change of the parameter.

[0142] 18. The wireless communication method according to clause 17, wherein the value of the parameter includes a value of CQI (channel quality indicator), a value of RSRP (reference signal receiving power), or a value of SINR (signal-to-interference-plus-noise ratio), and the deviation or the rate of change of the parameter includes a deviation or a rate of change of CQI, RSRP, or SINR.

[0143] 19. The wireless communication method according to Clause 18, wherein the first field further includes at least one of PMI (precoding matrix indicator), RI (rank indicator), CRI (CSI-RS resource index), SSB (synchronization signal block) index, or a first granularity indicator, and the second field further includes a second granularity indicator or a pattern for calculating the second field.

[0144] 20. The wireless communication method according to Clause 19, wherein at least one of the first granularity indicator or the second granularity indicator is configured by a network device, or configured according to a predefined table, or determined by a user equipment according to a predefined table.

[0145] 21. The wireless communication method according to Clause 17 further includes at least one of transmitting channel state reporting configuration or channel state reporting triggering from the network device to the user equipment.

[0146] 22. The wireless communication method according to Clause 17 further includes notifying the user equipment of any one of the first to third modes for calculating the second field via one of Equations 1 to 3, wherein Equations 1 to 3 are defined as follows:

[0147] Equation 1: P measurNew -P0,

[0148] Equation 2: or

[0149] Equation 3: (P measurNew -P0)granularity,

[0150] Among them, P measureNew This refers to the latest value of the parameter obtained at the user equipment, and P0 refers to the value of that parameter.

[0151] Equations 1 and 2 are defined as calculating the x-th deviation of the parameters in the first and second modes, respectively, while Equation 3 is defined as calculating the rate of change of the parameters in the third mode.

[0152] 23. The wireless communication method according to Clause 22, wherein the first field and the second field are quantized with different granularities and bit lengths, and the bit length of the second field is less than the bit length of the first field.

[0153] 24. The wireless communication method according to Clause 17, wherein the first field and the second field are received simultaneously.

[0154] 25. The wireless communication method according to Clause 17, wherein a first field and a second field are received at different times, the different times having different time offsets that satisfy the time requirements for transmitting the channel state reporting message, the time offsets corresponding to the first field and the second field respectively.

[0155] 26. The wireless communication method according to Clause 17, wherein at least one of the first field or the second field is transmitted via PUCCH (Physical Uplink Control Channel) or PUSCH (Physical Uplink Shared Channel).

[0156] 27. The wireless communication method according to Clause 17 further includes instructing one or more resources for calculating channel state reporting messages, said one or more resources including any one of a DM-RS (demodulation reference signal), a CSI-RS for CSI, or a CSI-RS for tracking.

[0157] 28. The wireless communication method according to Clause 17 further includes indicating one or more resources for calculating channel state reporting messages, wherein the one or more resources satisfy at least one of the following: i) indicating the same resource or different resources for the first field and the second field, ii) using DM-RS (demodulation reference signal) for the second field, or iii) configuring a power offset between the one or more resources if the first field and the second field indicate different resources.

[0158] 29. A wireless communication device comprising a processor and a memory, wherein the processor is configured to read code from the memory and implement the method according to any one of claims 1 to 28.

[0159] 30. A computer program product comprising computer-readable program medium code stored thereon, which, when executed by a processor, causes the processor to perform the method according to any one of claims 1 to 28.

[0160] This specification and accompanying drawings are to be considered exemplary only, where exemplary means example, and unless otherwise stated, do not imply an ideal or preferred embodiment. As used herein, the use of "or" is intended to include "and / or".

[0161] Some embodiments described herein are described within the broader context of methods or processes that may be implemented in one embodiment by a computer program product contained in a computer-readable medium, including computer-executable instructions such as program code that are executed by a computer in a networked environment. The computer-readable medium may include removable and non-removable storage devices, including but not limited to read-only memory (ROM), random access memory (RAM), optical disc (CD), digital versatile optical disc (DVD), etc. Therefore, the computer-readable medium may include non-transitory storage media. Typically, program modules may include routines, programs, objects, components, data structures, etc., that perform a specific task or implement a specific abstract data type. Computer or processor-executable instructions, associated data structures, and program modules represent examples of program code for performing the method steps disclosed herein. Specific sequences of such executable instructions or associated data structures represent examples of corresponding actions for implementing the functionality described in such steps or processes.

[0162] Some of the disclosed embodiments may be implemented as devices or modules using hardware circuitry, software, or a combination thereof. For example, hardware circuitry implementations may include discrete analog and / or digital components, which may be integrated, for example, as part of a printed circuit board. Alternatively, or additionally, the disclosed components or modules may be implemented as application-specific integrated circuits (ASICs) and / or field-programmable gate arrays (FPGAs). Some implementations may additionally or alternatively include digital signal processors (DSPs), which are dedicated microprocessors with an architecture optimized for the operational needs of digital signal processing associated with the disclosed functions of this application. Similarly, various components or sub-components within each module may be implemented using software, hardware, or firmware. Interconnectivity between modules and / or components within modules may be provided using any connection methods and media known in the art, including but not limited to communication over the Internet, wired, or wireless networks using appropriate protocols.

[0163] While this application contains numerous details, these should not be construed as limiting the scope of the claimed invention or any potentially claimed content, but rather as descriptions of features specific to particular embodiments. Certain features described herein may also be implemented in combination in a single embodiment within the context of individual embodiments. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments. Furthermore, although the foregoing features may be described as functioning in certain combinations, or even originally claimed in this way, in some cases one or more features from said combination may be removed from that combination, and said combination may involve sub-combinations or variations thereof. Similarly, although operations are described in a specific order in the drawings, this should not be construed as requiring these operations to be performed in the specific order or sequence shown, or requiring all of the operations shown to obtain the desired result.

[0164] Only some implementation methods and examples have been described, and other implementation methods, enhancements and modifications can be made based on the content described and illustrated in this disclosure.

Claims

1. A channel state information (CSI) feedback method based on artificial intelligence, the feedback method comprising: Determine the calculation mode used to calculate CSI. The calculation mode includes multiple modes for calculating the CSI using different formulas, wherein the multiple modes are indexed by at least one corresponding set of input parameters and output parameters, and The input parameters include: granularity for calculation, filtering parameters for CSI smoothing, or weights or RS indexes for calculation. The output parameters include a first field indicating a reference value for the CSI parameter and a second field containing the deviation or rate of change of the CSI parameter. The second field can be calculated from one or more patterns determined by indexing, and the second field is calculated based on the corresponding value of the first field.

2. The CSI feedback method according to claim 1, wherein the feedback method further comprises determining at least one of the following: i) a reporting mode for reporting the CSI, the reporting mode providing information on whether the CSI is periodically or non-periodically reported, and one or more resources for reporting the CSI; ii) the content for reporting; and iii) the granularity for reporting.

3. The CSI feedback method according to claim 1, wherein, The output parameters of the calculation mode also include: Extracted parameters for channel condition modeling.

4. The CSI feedback method according to claim 1, wherein, The first field further includes a first granularity indicator, and the second field further includes a second granularity indicator, wherein at least one of the first granularity indicator and the second granularity indicator is configured by the network device, or configured according to a predefined table, or determined by the communication device according to the predefined table.

5. The CSI feedback method according to claim 3, wherein, The extracted parameters used for channel condition modeling include Doppler spread, Doppler shift, delay spread, and delay shift.

6. The CSI feedback method according to claim 1, wherein, Where multiple methods are explicitly defined for the computation mode in the specification, the input parameters include method indexes.

7. The CSI feedback method according to claim 1, wherein, The computing mode includes resource configuration for CSI computing.

8. The CSI feedback method according to claim 2, wherein, The granularity used for reporting includes broadband or sub-band.

9. The CSI feedback method according to claim 2, wherein, The methods for reporting CSI include one of the following: periodic, aperiodic, and semi-continuous.

10. The CSI feedback method according to claim 2, wherein, The configuration information for the computing mode is included in the configuration of the reporting mode; or The configuration information for the calculation mode is configured separately from the reporting mode; or The configuration information for the computing mode is included in the trigger configuration.

11. The CSI feedback method according to claim 2, wherein, The calculation mode and the reporting mode are indicated by the network device to the communication device.

12. The CSI feedback method according to claim 1, wherein the feedback method further comprises: A channel status reporting message is transmitted by a communication device. The channel status reporting message includes at least one of a first field indicating the value of a parameter and a second field including the deviation or rate of change of the parameter.

13. A wireless communication device, comprising a processor and a memory, wherein, The processor is configured to read code from the memory and implement the method according to any one of claims 1 to 12.

14. A computer-readable medium comprising computer-readable program medium code stored thereon, which, when executed by a processor, causes the processor to perform the method according to any one of claims 1 to 12.

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