Wireless communication method, wireless communication device and computer readable medium

Abstract

Methods, systems, and devices are described for transmitting and receiving channel quality indication (CQI) information over a physical channel to facilitate, e.g., meet block error rate requirements in emerging systems. An example method includes transmitting an index associated with a quality of a physical channel, wherein the index corresponds to an entry in a set of parameter tables. Another example method includes receiving an index associated with a quality of a downlink physical channel, and transmitting a plurality of data blocks wherein content of the plurality of data blocks is encoded and modulated using a code rate and a modulation scheme, respectively, selected from entries in a parameter table corresponding to the index. In both exemplary methods, one or more parameter tables include at least three entries including a code rate of less than or equal to 120 / 1024.

Description

[0001] This application is a divisional application of the Chinese patent application with application number "201880092181.1", application date "April 4, 2018", and title "Channel Quality Indication Information Transmission and Reception". Technical Field

[0002] This document relates generally to wireless communications. Background Art

[0003] Wireless communication technologies are driving the world into an increasingly interconnected and networked society. The rapid development of wireless communications and technological advancements have led to greater demands for capacity and connectivity. Other aspects, such as energy consumption, equipment cost, spectrum efficiency, and latency, are also crucial to meeting the demands of various communication scenarios. Compared to existing wireless networks, next-generation systems and wireless communication technologies must provide adaptive waveforms that can withstand time-varying fading channel conditions and interference from a large number of users. Summary of the Invention

[0004] This document relates to methods, systems, and devices for sending and receiving channel quality indication (CQI) information. The CQI table is one aspect of implementing adaptive coding and modulation techniques, which are used to ensure that data transmission meets corresponding block error rate requirements.

[0005] In one exemplary aspect, a wireless communication method is disclosed. The method may be implemented in a wireless device (e.g., a user equipment), comprising transmitting, via an uplink physical channel, an index associated with a quality of a downlink physical channel, wherein the index corresponds to an entry in a parameter table of a parameter table set, the entry including a modulation scheme, a code rate, and an efficiency associated with the index, and wherein one or more parameter tables in the parameter table set include at least three entries including a code rate less than or equal to 120 / 1024.

[0006] In another exemplary aspect, a wireless communication method is disclosed. The method may be implemented in a network node (e.g., a base station, eNB, or gNB), comprising receiving an index associated with a quality of a downlink physical channel over an uplink physical channel, and transmitting a plurality of data blocks, wherein content of the plurality of data blocks is determined by a block size and a modulation scheme corresponding to an entry associated with an index in a parameter table of a set of parameter tables, wherein the entry may further include an efficiency, and wherein one or more parameter tables in the set of parameter tables include at least three entries including a code rate less than or equal to 120 / 1024.

[0007] In yet another exemplary aspect, the above method is implemented in the form of processor-executable code and stored in a computer-readable program medium.

[0008] In yet another exemplary embodiment, a device configured or operable to perform the above methods is disclosed. The device may include a processor programmed to implement these methods.

[0009] The above and other aspects and their implementation are described in more detail in the drawings and the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Examples of a base station (BS) and a user equipment (UE) in wireless communications according to some embodiments of the disclosed technology are shown.

[0011] Figure 2 An example of a 4-bit CQI table with modulation schemes up to 64-QAM (Quadrature Amplitude Modulation) is shown.

[0012] Figure 3 Another example of a CQI table is shown.

[0013] Figure 4 Another example of a CQI table is shown.

[0014] Figure 5A and Figure 5B Examples of unaligned and aligned CQI tables are shown.

[0015] Figure 6A and Figure 6B Another example of an unaligned CQI table and an aligned CQI table is shown.

[0016] Figure 7 An example of a wireless communication method for transmitting and receiving CQI information is shown.

[0017] Figure 8 Another example of a wireless communication method for transmitting and receiving CQI information is shown.

[0018] Figure 9 is a block diagram representation of a portion of an apparatus that can implement the methods or techniques described in this patent document. DETAILED DESCRIPTION

[0019] Due to the time-varying nature of wireless fading channels, mobile communication systems can adaptively adjust their transmission power, modulation and coding schemes, and data frame length based on instantaneous channel conditions to overcome these time-varying characteristics and achieve the best possible performance. This mechanism, known as adaptive coding and modulation, is part of most current link adaptation technologies.

[0020] Channel quality indicator (CQI) is part of the physical channel state information (CSI). The CQI table is an important part of implementing adaptive coding and modulation technology. After channel estimation, the wireless device (e.g., user equipment (UE) or terminal) reports the CQI to the network node (e.g., base station (BS) or gNB), and the base station selects the appropriate modulation and coding scheme (MCS) and transport block size based on the CQI information to ensure that the transport block can meet the corresponding block error rate requirements. The current CQI table does not meet the requirements of the new radio (NR) system. In addition to other features, the technology described in this document can be embodied in an implementation that overcomes this limitation of the current CQI table.

[0021] Figure 1 An example of a wireless communication system including a base station (BS) 120 and one or more user equipment (UEs) 111, 112, and 113 is shown. In some embodiments, the UEs may report CQIs (131, 132, 133) to the BS. For each reported CQI, the BS may refer to an MCS (modulation and coding scheme) table to determine the modulation scheme and code rate corresponding to the CQI index, and then transmit data blocks (141, 142, 143) to the UEs using the modulation scheme and code rate for the respective UEs. For example, the UEs may be smartphones, tablets, mobile computers, machine-to-machine (M2M) devices, Internet of Things (IoT) devices, and the like.

[0022] The current version of the upcoming New Radio Enhanced Mobile Broadband (NR-eMBB) standard uses the same CQI table as in the Long Term Evolution (LTE) standard. Due to the low NR-URLLC (Ultra-Reliable and Low Latency Communication) latency (e.g., user plane latency may be less than 1ms) and high reliability (e.g., block error rate (BLER) requirements may be ≤1e -5 ) requirements, the existing CQI table may not be sufficient. The embodiments of the disclosed technology are not limited to NR-URLLC and can be applied to other systems and operation modes.

[0023] Figure 2 An example CQI table is shown. Figure 2As shown in the table, CQI can be represented by integer values ​​from 0 to 15, which represent different CQI levels corresponding to different channel conditions. In the table, the digital modulation methods listed are QAM (Quadrature Amplitude Modulation) and QPSK (Quadrature Phase Shift Keying). In addition, the spectral efficiency (or simply "efficiency") listed in the table is defined as the product of the code rate and the modulation order. For QPSK, 16-QAM and 64-QAM modulation methods, the modulation order is 2, 4 and 6 respectively. In other words, for a channel with 2 m The base station selects the appropriate MCS and transport block size based on the CQI information reported by the terminal (from the CQI table) to ensure that the transport block can meet the corresponding block error rate requirements.

[0024] Embodiments of the disclosed technology may include one or more CQI tables (e.g., two tables), at least one of which may be defined as described herein. Figure 1 As described in the context of , an entry in the CQI table may include a CQI index and a corresponding modulation scheme, code rate, and efficiency (where efficiency = code rate × modulation order). Section headings are used in this document to improve readability and do not in any way limit the discussion or embodiments to only the respective sections.

[0025] In some embodiments, a UE or terminal may support more than one scenario, each of which requires one or more CQI tables. The UE may require higher-layer parameters from a base station (BS; eNB or gNB) to inform the UE which CQI table to use for CQI reporting.

[0026] In some embodiments, a UE may support eMBB and URLLC. In one example, eMBB supports two CQI tables with different maximum modulation orders, one of which is CQI Table 1 and the other is CQI Table 2. Similarly, URLLC may also support two CQI tables for different BLER requirements, one of which is CQI Table 1 and the other is CQI Table 3. Two higher-layer parameters, such as para1 and para2, may be required to indicate which CQI table the UE should use.

[0027] In one example, its operation may include the following steps: (1) when para1 is in state S1_1 or para2 is in state S2_1, the UE or terminal uses CQI table 1 to perform CQI reporting, (2) when para1 is in state S1_2, the UE or terminal uses CQI table 2 to perform CQI reporting, and (3) when para2 is in state S2_2, the UE or terminal uses CQI table 3 to perform CQI reporting.

[0028] In some embodiments, para2 has a higher priority than para1, and when configuring the higher-layer parameters para1 and para2, the following rules can be followed:

[0029] (1) If para2 is in state S2_2 and para1 is in state S1_1, the UE or terminal uses CQI table 3 for CQI reporting.

[0030] (2) If para2 is in state S2_2 and para1 is in state S1_2, the UE or terminal uses CQI table 3 for CQI reporting, and

[0031] (3) If para2 is in state S2_1 and para1 is in state S1_2, the UE or terminal uses CQI table 1 for CQI reporting.

[0032] Example Embodiment 1:

[0033] In some embodiments, the CQI table may include L1 entries with a QPSK modulation scheme and code rates R1 and R2, where R1 < R2 and L1 = 2.

[0034] In some embodiments, the CQI table may include L2 entries with a QPSK modulation scheme and code rates R1, r1, r2,..., rn, and R2, where R1 < r1 < r2 <... < rn < R2, n = 1, 2, 4, or 5, and L2 = 2 + n.

[0035] In some embodiments, the supported minimum code rate may be R1.

[0036] In some embodiments, 30 / 1024 ≤ R1 ≤ 40 / 1024 and R2 = 78 / 1024.

[0037] Example 1.1 Define R1 between 30 / 1024 and 34 / 2014, R2 = 78 / 2014, and

[0038] r1 = operation((R1 + R2) / 2) + Δ1,

[0039] where the operation can be a round-off operation, a ceiling function, or a floor function, and

[0040] -5 / 1024 ≤ Δ1 ≤ 5 / 1024.

[0041] Example 1.2 R1 and the corresponding range of r1 are defined in the following table, where x in [a, b) defines a range that includes "a" but does not include "b", for example, a ≤ x < b.

[0042]

[0043]

[0044] In one example, at least one of the CQI tables may include entries with the following modulation schemes and code rates, which correspond to entries with the lowest spectral efficiency: (QPSK, 30 / 1024), (QPSK, 50 / 1024), and (QPSK, 78 / 1024).

[0045] Example embodiment 2:

[0046] In some embodiments, the CQI table may include L4 entries corresponding to Figure 2 For example, the L4 entries in the CQI table may include the same number of entries as Figure 2 The modulation schemes are the same as those in the corresponding entries in the table shown, but the code rates of the L4 entries in the CQI table can be different from Figure 2 The code rates of corresponding entries in the shown table differ by a value Δ2.

[0047] In some embodiments, the CQI table may include L4 entries corresponding to Figure 2 For example, the L4 entries in the CQI table may include the same number of entries as Figure 2 The modulation schemes are the same as those in the corresponding entries in the table shown, but the efficiency of the L4 entries in the CQI table can be the same as those in the table shown. Figure 2 The efficiencies of the corresponding L4 entries in the shown table differ by a value Δ3.

[0048] In some embodiments, the value of Δ2 or Δ3 may be offset by δ1, where -2 / 1024≤δ1≤2 / 1024. In other embodiments, the value of δ1 may be different in different entries.

[0049] In some embodiments, L4 entries may be the majority of entries in the CQI table. For example, L4 / L11 may be no less than P1, where L11 is the total number of entries in the CQI table and P1 may be 0.5, 0.6, 0.7, 0.8, or 0.95. In other words, L4 entries may constitute 50% to 95% of the entries in the CQI table.

[0050] In the context of the above embodiments, various implementations of the values ​​{Δ2 and Δ3} are possible. For example, these values ​​may be predetermined, randomly selected, and / or chosen based on various factors, including but not limited to other waveform parameters, channel conditions, or signaling. For example, Δ2 is ±2 j / 1024, Δ3 can be ±i×2 j / 1024, where i and j are non-negative integers.

[0051] Example 2.1 A set of entries with CQI indices I1 to I9 are defined, such as Figure 3 As shown, it corresponds to Figure 2 The table shown has entries for CQI indices 3 to 11. In this example, ( Figure 3 and Figure 2 The modulation schemes of the entries between the two tables are the same, but the corresponding code rates between the two tables differ by 16 / 1024.

[0052] Example 2.2 A set of entries with CQI indices I1 to I9 are defined, such as Figure 4 As shown, it corresponds to Figure 2 The table shown has entries for CQI indices 3 to 11. In this example, ( Figure 4 and Figure 2 The modulation schemes of the entries between the two tables are the same, but the corresponding efficiencies between the two tables differ by 16 / 1024.

[0053] Example 2.3 A set of entries with CQI indices I1 to I9 are defined, corresponding to Figure 2 The table shown has entries for CQI indices 3 to 11. In this example, the modulation schemes of the entries between the two tables are the same, but the corresponding efficiencies between the two tables differ by 32 / 1024.

[0054] Examples 2.1-2.3 illustrate different situations where the code rate or efficiency of each entry in the second table differs from the value of the corresponding parameter in the first table by an offset value. Figure 3 and Figure 4 The result table shown includes "..." to indicate entries in the dependent columns that are calculated based on offset values. For example, if the code rate is offset (e.g. Figure 3 As shown), the entry in the efficiency column is calculated as the product of the offset code rate and the modulation order of the entry.

[0055] Example 3:

[0056] In some embodiments, the highest modulation order of the entries in the CQI table may be 64-QAM, and the highest code rate R4 may be 666 / 1024 or 873 / 1024.

[0057] Example 3.1The entry in the CQI table with the maximum spectral efficiency is defined. For example, the entry in the CQI table corresponding to the maximum spectral efficiency has a 64-QAM modulation scheme and a code rate of 666 / 1024. For another example, the entry in the CQI table corresponding to the maximum spectral efficiency has a 64-QAM modulation scheme and a code rate of 873 / 1024. For another example, two entries in the CQI table corresponding to two maximum spectral efficiencies have a 64-QAM modulation scheme and code rates of 666 / 1024 and 873 / 1024, respectively.

[0058] In one example, features 1 to 3 describe embodiments of at least one of one or more CQI tables that may be present, which may be used by the system to support lower code rates, higher data transmission reliability, and better coverage.

[0059] Example 4:

[0060] Current and emerging wireless systems may need to meet different requirements when serving multiple users and supporting multiple services. In some embodiments, different BLER requirements may need to be supported, which may require the use of multiple CQI tables. In one example, CQI Table I may be designed for BLER1, while CQI Table II may be designed for BLER2, where the BLER thresholds may be 1e-1, 1e-2, 1e-3, 1e-4, or 1e-5.

[0061] In some embodiments, the CQI table set (or more generally, the parameter table set) includes CQI Table I and CQI Table II, where CQI Table I may include L5 entries corresponding to an equal number of entries in CQI Table II. For example, the L5 entries in CQI Table I may include the same modulation schemes as those in the corresponding entries in CQI Table II, but the code rates of the L5 entries in CQI Table I may differ from the code rates of the corresponding L5 entries in CQI Table II by a value Δ4.

[0062] In another example, the L5 entries in CQI Table I may include the same modulation schemes as those in the corresponding entries in CQI Table II, but the efficiencies of the L5 entries in CQI Table I may differ from the efficiencies of the corresponding L5 entries in CQI Table II by a value Δ5.

[0063] In some embodiments, the value Δ4 or Δ5 may be offset by δ2, where -2 / 1024≤δ2≤2 / 1024. In other embodiments, the value of δ2 may be different in different entries.

[0064] In some embodiments, L5 entries may be the majority of entries in CQI Table 1. For example, L5 / L222 may be no less than P1, where L2 is the total number of entries in CQI Table 1, and P2 may be 0.5, 0.6, 0.7, 0.8, or 0.95. In other words, L5 entries may constitute 50% to 95% of the entries in the CQI table.

[0065] In the context of the above embodiments, various implementations of the values ​​{Δ4 and Δ5} are possible. For example, these values ​​may be predetermined, randomly selected, and / or chosen based on various factors, including but not limited to other waveform parameters, channel conditions, or signaling. For example, Δ4 is ​​±2 j / 1024, Δ5 can be ±i×2 j / 1024, where i and j are non-negative integers.

[0066] Example 5:

[0067] As mentioned above, supporting different requirements may require the use of multiple CQI tables, and advantageously, the CQI indexes corresponding to the same modulation scheme and code rate are themselves the same.

[0068] Example 5.1 A set of entries for two CQI tables is defined, such as Figure 5A and Figure 5B For example, in Figure 5A In the CQI table design, CQI Table I does not include the second row of the table (e.g., (modulation, code rate × 1024, efficiency) = (QPSK, 32, 0.0625)), and CQI Table II does not include the last row of the table (e.g., (modulation, code rate × 1024, efficiency) = (64QAM, 873, 5.1152)). The other entries in CQI Table I and CQI Table II have the same modulation scheme and code rate combination, but are associated with different CQI indices in each table. For example, for (modulation, code rate × 1024, efficiency) = (QPSK, 120, 0.2344), the index in CQI Table I is 3, while the index in CQI Table II is 4.

[0069] As expected, the difference in indexes may cause problems. During the period when the base station sends the signaling instruction to switch the CQI table and the terminal does not respond to the instruction signaling, the base station and the terminal have different understandings of the scheduled CQI table.

[0070] You can use Figure 5B The problem is improved by using the table shown in FIG. 1 , in which the same modulation scheme and code rate combination is assigned to the same CQI index in CQI Tables I and II. Figure 5BAs shown, even if the base station and the terminal have different understandings of the entries in the CQI table, most of the CQI indexes in the table are the same, thereby reducing scheduling problems.

[0071] like Figure 6A and Figure 6B As shown, Example 5.2 is another example of two CQI tables that can be aligned to ensure that the vast majority of CQI indices in the tables are the same, thereby reducing scheduling issues. Figure 6A In the CQI table design of FIG1 , CQI Table I does not include the second and third rows of the table (e.g., depending on the code rate of R1 and r1 defined in Example 1.2), and CQI Table II does not include the last row of the table and the third to last rows (e.g., (modulation, code rate × 1024, efficiency) = (64QAM, 772, 4.5234) and (64QAM, 948, 5.5547)). The other entries in CQI Table I and CQI Table II have the same modulation scheme and code rate combination, but are associated with different CQI indices in each table.

[0072] And as shown in Example 5.1, Figure 6B The shown tables are realigned so that the same modulation scheme and code rate combination is assigned the same CQI index in CQI tables I and II, thereby reducing the difference between the CQI tables.

[0073] Example Methods for CQI Tables

[0074] Figure 7 An example of a wireless communication method 700 for transmitting and receiving CQI information over a physical channel is shown, which can be implemented on a wireless device. The method 700 includes, at step 710, transmitting, over an uplink physical channel, an index associated with a quality of a downlink physical channel, wherein the index corresponds to an entry in a parameter table of a set of parameter tables, which includes a modulation scheme, a code rate, and an efficiency associated with the index, and wherein one or more parameter tables in the set of parameter tables include at least three entries including a code rate less than or equal to 120 / 1024. In some embodiments, the uplink physical channel is a physical channel from the wireless device to a network node, and the downlink physical channel is a physical channel from the network node to the wireless device.

[0075] Method 700 may also include the steps of performing channel estimation and selecting an index based on the channel estimation. In some embodiments, the index may be based on the fidelity of the channel estimation. In other embodiments, a statistical measure of the channel estimation may be used to determine the index.

[0076] The method 700 may further comprise the step of receiving a plurality of data blocks, wherein content of the plurality of data blocks is determined by a block size and a modulation scheme, and wherein the block size and the modulation scheme correspond to entries associated with an index in at least one parameter table.

[0077] Method 700 may also include decoding each of the plurality of data blocks such that a block error rate (BLER) resulting from the decoding is less than or equal to a predetermined threshold. In some embodiments, the BLER meeting the predetermined threshold occurs after a single decoding pass. In other embodiments, the BLER meeting the predetermined threshold occurs after iterative decoding of the plurality of data blocks.

[0078] Figure 8 Another example of a wireless communication method 800 for transmitting and receiving CQI information via a physical channel is shown, which can be implemented at a network node. The method 800 includes, at step 810, receiving an index associated with a quality of a downlink physical channel via an uplink physical channel. In some embodiments, the uplink physical channel is a physical channel from a wireless device to the network node, and the downlink physical channel is a physical channel from the network node to the wireless device.

[0079] The method 800 includes, at step 820, sending a plurality of data blocks, wherein the content of the plurality of data blocks is determined by a block size and a modulation scheme, wherein the block size and the modulation scheme correspond to an entry associated with an index in a parameter table of a parameter table set, wherein the entry also includes an efficiency, and wherein one or more parameter tables in the parameter table set include at least three entries including a code rate less than or equal to 120 / 1024.

[0080] An embodiment of the disclosed technology may implement method 700 or method 800 and may include at least one CQI table described in the context of example embodiments 1 to 5.

[0081] For example, the modulation scheme of each entry in the at least one parameter table may be quadrature phase shift keying (QPSK). In addition, the code rate corresponding to the maximum index in the at least one parameter table may be 78 / 1024, and the code rate corresponding to the minimum index in the at least one parameter table may be between 30 / 1024 and 40 / 1024.

[0082] For example, the modulation scheme of each entry in the at least one parameter table may be quadrature phase shift keying (QPSK). In addition, the code rate corresponding to the maximum index of the at least one parameter table may be 120 / 1024, and the code rate corresponding to the minimum index of the at least one parameter table may be 78 / 1024.

[0083] For example, the first parameter table of the parameter table set may be a predetermined parameter table, wherein each entry in the first parameter table further includes an efficiency associated with an index.

[0084] For example, a second parameter table may be defined based on the first parameter table.

[0085] In one example, each entry in the second parameter table may include a modulation scheme that is the same as the modulation scheme associated with the corresponding entry in the first parameter table, and may further include a code rate that differs from the code rate associated with the corresponding entry in the first parameter table by a predetermined value.

[0086] In another example, each entry in the second parameter table may include a modulation scheme that is the same as the modulation scheme associated with the corresponding entry in the first parameter table and may further include an efficiency that differs from the efficiency associated with the corresponding entry in the first parameter table by a predetermined value.

[0087] For example, the predetermined value may be based on a modulation order of a modulation scheme.

[0088] For example, the predetermined value may be offset by a value greater than or equal to -2 / 1024 and less than or equal to 2 / 1024.

[0089] For example, the modulation scheme corresponding to the maximum index in the at least one parameter table may be 64-QAM.

[0090] For example, the code rate corresponding to the maximum index in the at least one parameter table may be 666 / 1024 or 873 / 1024.

[0091] For example, when two CQI tables are used to meet two different BLER requirements, a large number of entries between the two tables may be the same. In other words, the same modulation scheme and code rate combination will be assigned to the same CQI index.

[0092] In some embodiments, a parameter table set may include a table having one or more entries associated with modulation schemes that are the same as the modulation schemes corresponding to one or more entries in a reference table (e.g., an eMBB CQI table, which is not part of the parameter table set). In one example, a table in the parameter table set may include a code rate that is offset from the code rate in the corresponding entry in the reference table (as described in Example 2.1). In another example, a table in the parameter table set may include an efficiency that is offset from the efficiency in the corresponding entry in the reference table set (as described in Example 2.2). The efficiency and code rate of the parameter table may be calculated as described herein.

[0093] Figure 9is a block diagram representation of a portion of an apparatus according to some embodiments of the disclosed technology. Apparatus 905, such as a base station or wireless device, may include processor electronics 910, such as a microprocessor that implements one or more techniques described in this document. Apparatus 905 may include transceiver electronics 915 to send and / or receive wireless signals via one or more communication interfaces such as one or more antennas 920. Apparatus 905 may include other communication interfaces for sending and receiving data. Apparatus 905 may include one or more memories (not explicitly shown) configured to store information such as data and / or instructions. In some implementations, processor electronics 910 may include at least a portion of transceiver electronics 915. In some embodiments, radio 905 is used to implement at least some of the disclosed techniques, modules, or functions (including method 700 and method 800 described in this document).

[0094] It is intended that this specification, together with the drawings, be regarded as illustrative only, wherein exemplary refers to examples and does not imply ideal or preferred embodiments unless otherwise specified. Further, the use of "or" is intended to include "and / or" unless the context clearly dictates otherwise.

[0095] Some embodiments described herein are described in the context of methods or processes, which may be implemented in one embodiment by a computer program product embodied in a computer-readable medium, including computer-executable instructions, such as program code, executed by a computer in a network environment. Computer-readable media may include removable and non-removable storage devices, including but not limited to read-only memory (ROM), random access memory (RAM), compact discs (CD), digital versatile discs (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 specific tasks or implement specific abstract data types. Computer or processor executable instructions, related data structures, and program modules represent examples of program code for executing the method steps disclosed herein. A specific sequence of such executable instructions or related data structures represents an example of corresponding actions for implementing the functions described in such steps or processes.

[0096] Some disclosed embodiments can be implemented as devices or modules using hardware circuits, software or a combination thereof. For example, a hardware circuit implementation can include discrete analog and / or digital components, for example, which are integrated as a part of a printed circuit board. Alternatively, or in addition, the disclosed components or modules can be implemented as application specific integrated circuits (ASICs) and / or field programmable gate arrays (FPGAs). Some implementations can additionally or alternatively include a digital signal processor (DSP), which is a dedicated microprocessor with an architecture optimized for the operational needs of digital signal processing associated with the disclosed functions of the present application. Similarly, the various components or subcomponents within each module can be implemented with software, hardware or firmware. The connection between the modules and / or the components within the modules can be provided using any connection method and medium known in the art, including but not limited to communications on the Internet, wired or wireless networks using appropriate protocols.

[0097] Although this document contains many details, these should not be interpreted as limitations on the scope of the claimed invention or what may be claimed, but rather as descriptions of features for particular embodiments. Certain features described in this document in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable subcombination in multiple embodiments. In addition, although the above-mentioned features may be described as working in certain combinations and even initially claimed as such, in some cases one or more features from the claimed combination may be deleted from the combination, and the combination may involve subcombinations or variations of subcombinations. Similarly, although operations are described in a particular order in the accompanying drawings, this should not be understood as a requirement that the operations be performed in the particular order or sequence shown, or that all of the shown operations be performed to obtain the desired result.

[0098] Only a few implementations and examples are described, and other implementations, enhancements, and variations can be made based on what is described and illustrated in this disclosure.

Claims

1. A wireless communication method implemented at a wireless device, the method comprising: Transmitting an index associated with the quality of a physical channel via a physical channel, wherein the transmission is via the physical channel from the wireless device to a network node, wherein the quality of the one physical channel is for a physical channel from the network node to the wireless device, wherein the index corresponds to an entry in a parameter table of a set of parameter tables, wherein the entry includes a modulation scheme, a code rate, and an efficiency associated with the index, wherein one or more parameter tables in the set of parameter tables include at least three entries, which include code rates equal to 30 / 1024, 50 / 1024, and 78 / 1024, and wherein the modulation scheme of the at least three entries is quadrature phase shift keying QPSK, wherein the set of parameter tables includes one or two parameter tables, wherein the parameter table selected from the set of parameter tables corresponding to the index is determined according to a high-layer parameter sent by the network node.

2. The method according to claim 1, wherein The modulation scheme of a subset of entries in at least one parameter table in the set of parameter tables is QPSK, and wherein the subset of entries includes code rates R1, r1, r2,..., rn, and R2, wherein n is in the set {0, 1, 2, 4, 5}, wherein R1 < r1 < r2 <... < rn < R2, and wherein R2 < 120 / 1024.

3. The method according to claim 2, wherein: 30 / 1024 ≤ R1 ≤ 40 / 1024 and R2 = 78 / 1024.

4. The method according to claim 1, wherein One or more entries in the second parameter table include a code rate or an efficiency that respectively differ from the code rate or efficiency of the corresponding entry in the first parameter table by a predetermined value, the predetermined value being offset by a value greater than or equal to -2 / 1024 and less than or equal to 2 / 1024.

5. The method according to claim 1, wherein The modulation scheme and code rate of the first parameter table of the set of parameter tables are defined as:

6. The method according to claim 1, wherein One or more entries in the parameter table of the set of parameter tables include a modulation scheme that is the same as the modulation scheme of a corresponding one or more entries in a reference parameter table, wherein one or more entries in the parameter table include a code rate that differs from the code rate of the corresponding entry in the reference parameter table by a first predetermined value, or wherein one or more entries in the parameter table include an efficiency that differs from the efficiency of the corresponding entry in the reference parameter table by a second predetermined value.

7. The method according to claim 1, wherein The modulation scheme corresponding to the maximum efficiency in at least one parameter table of the set of parameter tables is 64-QAM (quadrature amplitude modulation).

8. The method according to claim 7, wherein: [[ID=X]]The code rate corresponding to the maximum efficiency in the at least one parameter table is 666 / 1024 or 873 / 1024.

9. The method according to claim 1, wherein: The first parameter table and the second parameter table in the set of parameter tables include the same set of entries, wherein the first parameter table is associated with a first block error rate requirement, and wherein the second parameter table is associated with a second block error rate requirement.

10. A wireless communication method implemented at a network node, the method comprising: Receiving an index associated with the quality of a physical channel via a physical channel; and Transmitting a plurality of data blocks, Note: There seems to be a mistake in the original text where the code rate in ID=13 should be a fraction within the range of 0 to 1. I assume it should be 666 / 1024 and 873 / 1024 as corrected in the translation. If this is not what you intended, please let me know. Also, in the translation, I've added "respectively" in ID=9 according to the context to make the sentence more complete. And I've marked the correction in ID=13 as "X" for your reference. Wherein, the reception is performed via the physical channel from the wireless device to the network node, where the quality of the one physical channel is for a physical channel from the network node to the wireless device, wherein the index corresponds to an entry in a parameter table of a set of parameter tables, wherein the entry includes a modulation scheme, a code rate, and an efficiency associated with the index, wherein one or more parameter tables in the set of parameter tables include at least three entries, which include code rates equal to 30 / 1024, 50 / 1024, and 78 / 1024, and wherein the modulation scheme of the at least three entries is quadrature phase shift keying QPSK, wherein the set of parameter tables includes one or two parameter tables, wherein the parameter table selected from the set of parameter tables corresponding to the index is determined according to high-layer parameters sent by the network node.

11. The method according to claim 10, wherein: The modulation scheme of a subset of entries in at least one parameter table of the set of parameter tables is QPSK, and wherein the subset of entries includes code rates R1, r1, r2, …, rn and R2, wherein n is in the set {0, 1, 2, 4, 5}, wherein R1 < r1 < r2 < … < rn < R2, and wherein R2 < 120 / 1024.

12. The method according to claim 11, wherein 30 / 1024 ≤ R1 ≤ 40 / 1024 and R2 = 78 / 1024.

13. The method according to claim 10, wherein: One or more entries in the second parameter table include a code rate or an efficiency that differs from the code rate or efficiency associated with the corresponding entry in the first parameter table by a predetermined value, and the predetermined value is offset by a value greater than or equal to -2 / 1024 and less than or equal to 2 / 1024.

14. The method according to claim 10, wherein: The wireless device is a user equipment operating in a mobile communication network, wherein the index associated with the quality of the one physical channel is a channel quality indicator (CQI), and wherein the mobile communication network supports new radio - massive machine type communication (NR - mMTC) services, or new radio - ultra - reliable low - latency communication (NR - URLLC) services.

15. A wireless communication device comprising a processor, wherein: The processor is configured to implement the method according to any one of claims 1 to 14.

16. A computer - readable medium having code stored thereon, which when executed by a processor, causes the processor to implement the method according to any one of claims 1 to 14.

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