Terminal capability reporting method and system, and storage medium and electronic device

Abstract

The embodiments of the present disclosure relate to the technical field of communications, and relate to a terminal capability reporting method and system, and a storage medium and an electronic device. The method comprises: a terminal reporting, to a base station, support information for the maximum number of spatial multiplexing layers for downlink reception, wherein the support information indicates five layers or six layers.

Description

Terminal capability reporting method and system, storage medium, and electronic device

[0001] Related applications

[0002] The present application claims priority to the Chinese patent application No. 2024118052381, filed on December 9, 2024, and entitled "Terminal capability reporting method and system, storage medium, and electronic device", the contents of which are hereby incorporated by reference in their entirety. TECHNICAL FIELD

[0003] Embodiments of the present disclosure relate to the field of communication technology, in particular to a terminal capability reporting method, a terminal capability reporting system, a computer readable storage medium, and an electronic device. BACKGROUND

[0004] For the design of the downlink data transmission capability of a Rank6 (Channel Rank 6) terminal, compared with the original Rank2 (Channel Rank 2) or Rank4 (Channel Rank 4), the use scenarios, applicable network configurations, and receiver implementation methods of Rank6 need to be further specified; however, in the traditional scheme, the use scenarios, applicable network configurations, and receiver implementation methods of Rank6 are not limited, and thus the downlink data transmission in the Rank6 scenario cannot be realized. SUMMARY

[0005] The present disclosure provides a terminal capability reporting method, a terminal capability reporting system, a computer readable storage medium, and an electronic device.

[0006] According to an aspect of the present disclosure, a terminal capability reporting method is provided, applied to a terminal, comprising:

[0007] The terminal reports support information of the maximum number of spatial division multiplexing layers for downlink reception to the base station, and the support information indicates that the maximum number of spatial division multiplexing layers supported by the terminal is one of 5 layers and 6 layers.

[0008] In an exemplary embodiment of the present disclosure, the terminal reports support information of the maximum number of spatial division multiplexing layers for downlink reception to the base station, comprising:

[0009] The terminal reports transmission capability to the base station in response to capability query signaling from the network side; and the transmission capability indicates that the support information of the maximum number of spatial division multiplexing layers for downlink reception of the terminal is one of 5 layers and 6 layers.

[0010] In an exemplary embodiment of the present disclosure, the transmission capability comprises at least one of the following:

[0011] whether to support maximum 5-layer or 6-layer downlink transmission in a specific transmission environment;

[0012] whether to support maximum 5-layer or 6-layer downlink transmission in a specific base station side or terminal side antenna implementation;

[0013] whether to support a specific demodulation reference signal (DMRS) configuration;

[0014] whether to support a specific resource allocation type of a physical downlink shared channel (PDSCH);

[0015] whether to support a specific modulation order;

[0016] whether to support a specific receiving algorithm;

[0017] a terminal type supported by the transmission capability;

[0018] a frequency range to which the transmission capability is applied.

[0019] In an example embodiment of the present disclosure, the specific transmission environment includes at least one of a transmission environment at a first speed, a transmission environment at a first delay spread, a transmission environment at a second speed, and a transmission environment at a second delay spread; the first speed is less than the second speed; and the first delay is less than the second delay.

[0020] the specific base station side or terminal side antenna implementation includes at least one of a number of antennas and a correlation between antennas;

[0021] the specific DMRS configuration includes at least one of a DMRS type, a symbol length of a DMRS, an additional position of a DMRS, and a version of a DMRS;

[0022] the specific receiving algorithm includes at least one of an MMSE-IRC algorithm, an E-MMSE-IRC algorithm, and an R-ML algorithm;

[0023] the terminal type includes at least one of a handheld terminal, a foldable terminal, a vehicle-mounted terminal, an industrial terminal, and a fixed wireless access terminal;

[0024] the frequency range includes at least one of an FR1 frequency band and an FR2 frequency band.

[0025] In an example embodiment of the present disclosure, the DMRS type includes at least one of a DMRS type 1 and a DMRS type 2;

[0026] The symbol length of the demodulation reference signal includes at least one of a single-symbol demodulation reference signal and a double-symbol demodulation reference signal;

[0027] The additional positions of the demodulation reference signal include at least one of 0 additional positions, 1 additional position, 2 additional positions, and 3 additional positions;

[0028] The demodulation reference signal version includes at least one of R15 and R18.

[0029] In one exemplary embodiment of this disclosure, the reporting granularity of transmission capability includes at least one of each user equipment, each frequency band, each frequency band combination, each feature set, and each feature set of each carrier unit.

[0030] In one exemplary embodiment of this disclosure, the method further includes: reporting channel state information to a base station when the maximum rank indicator is 6; the channel state information is used to instruct the base station to determine whether the channel environment of the terminal is suitable for downlink transmission at a maximum of layer 5 or layer 6.

[0031] In one exemplary embodiment of this disclosure, the method further includes:

[0032] Receive feedback from the base station regarding the Hybrid Automatic Repeat Request-Acknowledgement Response;

[0033] If the interval between the feedback time of the allocated Hybrid Automatic Repeat Request-Acknowledgement Response and the reception time of the received downlink data is greater than or equal to the first duration, a Hybrid Automatic Repeat Request-Acknowledgement Response is sent back to the base station.

[0034] According to one aspect of this disclosure, a method for reporting terminal capabilities is provided, applied to a base station, comprising:

[0035] The receiving terminal reports support information for the maximum number of spatial multiplexing layers used for downlink reception, wherein the support information indicates that the terminal supports a maximum number of spatial multiplexing layers of either 5 or 6.

[0036] In one exemplary embodiment of this disclosure, the support information for the maximum number of spatial multiplexing layers for downlink reception reported by the receiving terminal includes:

[0037] Based on the downlink reception transmission capability, configure the signal configuration corresponding to the transmission capability for the terminal, and schedule the transmission of the physical downlink shared channel; the transmission capability indicates that the terminal supports a maximum number of spatial multiplexing layers for downlink reception, which is either 5 layers or 6 layers.

[0038] In one exemplary embodiment of this disclosure, configuring a signal configuration for the terminal corresponding to the transmission capability includes:

[0039] Configure the terminal with channel state information measurement corresponding to the transmission capability.

[0040] In one exemplary embodiment of this disclosure, configuring channel state information measurement corresponding to the transmission capability for the terminal includes: configuring a channel state information reference signal corresponding to the transmission capability for the terminal, and configuring the terminal to report channel state information when the maximum rank indicator is 6.

[0041] In one exemplary embodiment of this disclosure, the method further includes:

[0042] The channel state information reported by the receiving terminal when the maximum rank indicator is 6;

[0043] Based on the channel state information, determine whether the terminal's channel environment is suitable for downlink transmission at a maximum of 5 or 6 layers.

[0044] In one exemplary embodiment of this disclosure, determining whether the channel environment of the terminal is suitable for downlink transmission at a maximum of layer 5 or layer 6 based on channel state information includes:

[0045] If the channel state information indicates that the terminal is currently in a high-speed transmission environment and needs to be configured with a demodulation reference signal with a first preset density, then it is determined that the terminal's channel environment is not suitable for downlink transmission of up to 5 or 6 layers.

[0046] If the channel state information meets the preset channel environment, then the terminal's channel environment is determined to be suitable for downlink transmission at a maximum of 5 or 6 layers.

[0047] In one exemplary embodiment of this disclosure, the method further includes:

[0048] If the channel environment of the terminal is not suitable for downlink transmission of up to 5 or 6 layers, then the Rank4+ method is used to configure the terminal with a demodulation reference signal with a second preset density to obtain the optimal downlink rate of the terminal.

[0049] If the channel environment of the terminal is suitable for downlink transmission of up to 5 or 6 layers, then the terminal is configured to perform downlink transmission of up to the maximum layer according to the receiving algorithm that the terminal can support.

[0050] In one exemplary embodiment of this disclosure, configuring downlink maximum layer transmission for the terminal according to the receiving algorithm supported by the terminal includes:

[0051] If the terminal does not support a specific receiving algorithm, then single-user MIMO Rank6 transmission is scheduled for the terminal to obtain the maximum throughput of the terminal.

[0052] If the terminal supports a specific receiving algorithm, then other terminals corresponding to that terminal are matched, and multi-user MIMO transmission is invoked for that terminal and other terminals to obtain the highest total network throughput corresponding to that terminal and other terminals.

[0053] In one exemplary embodiment of this disclosure, during the scheduling of multi-user MIMO transmission, if the total number of the terminal and other terminals exceeds a first preset number threshold, a Rel-18 enhanced demodulation reference signal is scheduled to support the transmission of data streams with a maximum level of 24.

[0054] In one exemplary embodiment of this disclosure, the method further includes:

[0055] If the terminal supports a specific receiving algorithm, then auxiliary information is sent to the terminal so that the terminal can receive multi-level data streams sent by the base station based on the auxiliary information and the receiving algorithm.

[0056] In one exemplary embodiment of this disclosure, the auxiliary information includes at least one of the following: first auxiliary information corresponding to the MMSE-IRC algorithm, second auxiliary information corresponding to the E-MMSE-IRC algorithm, and third auxiliary information corresponding to the R-ML algorithm;

[0057] The first auxiliary information includes at least one of the following: number of multiplexed users, modulation order of multiplexed users, number of multiplexed user streams, current transmission time-frequency resource allocation information of multiplexed users, port allocation information of multiplexed user DMRS, configuration information of multiplexed user PT-RS reference signal, configuration information of multiplexed user CSI-RS reference signal, configuration information of multiplexed user TRS reference signal, and modulation and coding strategy table information configured by the network for multiplexed users.

[0058] The second auxiliary information includes at least one of the following: multiplexed user channel information, number of multiplexed users, modulation order of multiplexed users, number of multiplexed user streams, current transmission time-frequency resource allocation information of multiplexed users, port allocation information of multiplexed user DMRS, configuration information of multiplexed user PT-RS reference signal, configuration information of multiplexed user CSI-RS reference signal, configuration information of multiplexed user TRS reference signal, and modulation and coding strategy table information configured by the network for multiplexed users;

[0059] The third auxiliary information includes at least one of the following: constellation diagram information at the RE level of multiplexed users, number of multiplexed users, modulation order of multiplexed users, number of multiplexed user streams, current transmission time-frequency resource allocation information of multiplexed users, port allocation information of multiplexed user DMRS, configuration information of multiplexed user PT-RS reference signal, configuration information of multiplexed user CSI-RS reference signal, configuration information of multiplexed user TRS reference signal, and modulation and coding strategy table information configured by the network for multiplexed users.

[0060] In one exemplary embodiment of this disclosure, the terminal capability reporting method further includes:

[0061] Assign feedback to the terminal using a hybrid automatic repeat request-acknowledgment response;

[0062] If the interval between the feedback time of the allocated Hybrid Automatic Repeat Request-Acknowledgement and the reception time of the received downlink data is greater than or equal to the first duration, the receiving terminal will send a Hybrid Automatic Repeat Request-Acknowledgement.

[0063] In one exemplary embodiment of this disclosure, the first duration is related to the number of layers of downlink data received by the terminal.

[0064] According to one aspect of this disclosure, a terminal capability reporting system is provided, comprising:

[0065] The terminal and the base station, wherein the terminal is communicatively connected to the base station;

[0066] The terminal is used to report support information for the maximum number of spatial multiplexing layers for downlink reception to the base station. The support information indicates that the maximum number of spatial multiplexing layers supported by the terminal is one of 5 layers and 6 layers.

[0067] The base station is used to configure a signal configuration corresponding to the transmission capability reported by the terminal, and to schedule the transmission of the physical downlink shared channel; the transmission capability indicates that the maximum number of spatial multiplexing layers supported by the terminal for downlink reception is either 5 layers or 6 layers.

[0068] According to one aspect of this disclosure, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the method for reporting terminal capabilities as described in any of the preceding claims.

[0069] According to one aspect of this disclosure, an electronic device is provided, comprising:

[0070] processor;

[0071] transceiver; and

[0072] Memory for storing the executable instructions of the processor;

[0073] The processor is configured to execute any of the above-described terminal capability reporting methods applied to the terminal by executing the executable instructions.

[0074] According to one aspect of this disclosure, an electronic device is provided, comprising:

[0075] processor;

[0076] transceiver; and

[0077] Memory for storing the executable instructions of the processor;

[0078] The processor is configured to execute any of the above-described methods for reporting terminal capabilities applied to a base station by executing the executable instructions. Attached Figure Description

[0079] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0080] Figure 1 is a schematic diagram of a comparison scenario of the throughput of the theoretical peak of downlink maximum 6 data layers MIMO transmission at the peak rate of a 5G single user according to an exemplary embodiment of the present disclosure.

[0081] Figure 2 is a schematic diagram of a scenario based on a link-level simulation result obtained according to an example embodiment of the present disclosure, taking into account practical factors such as actual channel, code rate, reference signal configuration, and the high antenna correlation of the handheld 6Rx antenna terminal.

[0082] Figure 3 is a schematic diagram showing the comparison of transmission speeds between 6 data layers and 4 data layers under the assumptions of a high-latency extended channel or high correlation of terminal antennas, according to an example embodiment of the present disclosure.

[0083] Figure 4 is a flowchart illustrating a terminal capability reporting method according to an example embodiment of the present disclosure.

[0084] Figure 5 is a schematic diagram of a scenario of a terminal capability reporting system according to an example embodiment of the present disclosure.

[0085] Figure 6 is a block diagram of a terminal capability reporting device according to an exemplary embodiment of the present disclosure.

[0086] Figure 7 shows an electronic device for implementing a terminal capability reporting method according to an example embodiment of the present disclosure. Detailed Implementation

[0087] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0088] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in at least one of different networks, processor devices, and microcontroller devices.

[0089] 4G LTE (Long Term Evolution) terminals typically have two receiver antennas. 4Rx (Receiver) handheld terminals were gradually introduced in LTE evolution versions. Furthermore, 5G NR (New Radio), starting with the initial Rel-15 standard, supports 2Rx or 4Rx handheld terminals and supports streaming data transmission of up to 2 or 4 data layers. 4Rx handheld terminals are a mandatory feature for certain high-frequency bands of FR1 (Frequency Range 1), such as the 3.5GHz band. Further, 5G Rel-18 introduced 8Rx terminal types for automotive terminals, industrial terminals, and FWA (Fixed Wireless Access) terminals, supporting data transmission of up to 4 or 8 data layers. Moreover, the 5G Rel-19 standard introduced 6Rx handheld terminals for the first time. In practical applications, 6Rx handheld terminals can further improve the reliability of 4-stream data transmission and potentially increase the theoretical peak throughput of downlink maximum 6-data-layer MIMO transmission by 50% by using spatial multiplexing of 5-data-layer or 6-data-layer data streams for a single user (see Figure 1 for a scenario illustration of the specific comparison results). Considering practical factors such as actual channel conditions, code rate, reference signal configuration, and the high antenna correlation of handheld 6Rx antenna terminals, the observable throughput improvement in link-level simulation results is 20%–30% (see Figure 2 for a scenario illustration of the specific comparison results).

[0090] 3GPP is conducting a feasibility study on whether handheld 6Rx antenna terminals can support downlink 6 data layer transmission. The main focus of the study is whether, considering actual network scenarios and equipment conditions, a higher data rate than Rank 4 can be achieved in Rank 5 or Rank 6 scenarios. Link-level simulations have observed that, under assumptions such as high-latency spread channels or high correlation of terminal antennas, the performance of 6 data layer transmission deteriorates sharply, falling below Rank 4 transmission. A scenario illustration of the specific comparison results can be found in Figure 3.

[0091] However, the design of downlink data transmission capability for Rank6 terminals requires further clarification of parameters such as the use cases, applicable network configurations, and receiver implementation methods compared to the original Rank2 or Rank4. This allows the base station to allocate corresponding transmission resources to 6Rx terminals based on the terminal capability reporting method designed in the example embodiments disclosed herein.

[0092] This exemplary embodiment first provides a method for reporting terminal capabilities, which can run on terminal devices, servers, server clusters, or cloud servers, etc. Of course, those skilled in the art can also run the method disclosed herein on other platforms as needed, and this exemplary embodiment does not impose any special limitations on this. Specifically, referring to Figure 4, the method for reporting terminal capabilities may include the following steps:

[0093] Step S410: The terminal reports to the base station the support information for the maximum number of spatial multiplexing layers used for downlink reception, wherein the support information indicates that the maximum number of spatial multiplexing layers supported by the terminal is one of 5 layers and 6 layers.

[0094] In the terminal capability reporting method described above, since the terminal can report to the base station the maximum spatial multiplexing layer support information for downlink reception as 5 or 6 layers, the base station can configure the signal configuration corresponding to the transmission capability of the terminal based on the reported downlink reception maximum spatial multiplexing layer support information of 5 or 6 layers, and schedule the transmission of the physical downlink shared channel. This solves the problem in traditional schemes that downlink data transmission cannot be achieved in Rank6 scenarios because the use cases, applicable network configurations, and receiver implementation methods of Rank6 are not limited. Thus, the goal of downlink data transmission in Rank6 scenarios is achieved.

[0095] The following will provide a detailed explanation and description of the terminal capability reporting method involved in the exemplary embodiments of this disclosure, in conjunction with the accompanying drawings.

[0096] First, the technical implementation principles of the exemplary embodiments of this disclosure are explained and described. Specifically, the terminal capability reporting method involved in the exemplary embodiments of this disclosure defines the transmission capability design of a multi-antenna terminal to report a maximum of 5 or 6 layers of downlink data streams to the network (base station) based on network capability query signaling. In practical applications, the exemplary embodiments of this disclosure take into account the conclusion that "different types of terminals have different implementation complexities" and the conclusion obtained through link-level simulation studies that "terminals can achieve better performance than 2 or 4 layers of data transmission under limited simulation configurations," and further design the specific characteristics of the terminal's transmission capabilities, including supported scenarios, antenna configuration, reference signal configuration modulation order, receiver algorithms, etc. Furthermore, the exemplary embodiments of this disclosure further disclose the terminal capability reporting method, that is, the reporting method can include, but is not limited to, per user equipment (per UE) and per frequency band (per band), encompassing various terminal implementations. Furthermore, the terminal capability reporting method described in the example embodiments of this disclosure can help further improve the peak rate of 5G single users, thereby enabling the base station to allocate corresponding transmission resources to 6Rx terminals based on the terminal capability reporting, and improve the overall network throughput.

[0097] Secondly, the terminal capability reporting system involved in the exemplary embodiments of this disclosure will be explained and described. Specifically, referring to Figure 5, the terminal capability reporting system may include a terminal 510 and a base station 520; wherein, the terminal can communicate with the base station through a wired network or a wireless network; in practical applications, the terminal can be used to report to the base station the maximum spatial multiplexing layer support information for downlink reception as 5 layers or 6 layers; the base station can be used to configure the signal configuration corresponding to the transmission capability reported by the terminal, and schedule the transmission of the physical downlink shared channel. The transmission capability indicates that the terminal supports either 5 layers or 6 layers for the maximum spatial multiplexing layer support information for downlink reception.

[0098] The following section will further explain and illustrate the terminal capability reporting method shown in Figure 4, using Figure 5 as a reference. Specifically:

[0099] In step S410, the terminal reports to the base station the support information for the maximum number of spatial multiplexing layers used for downlink reception, which is 5 or 6 layers.

[0100] Specifically, in practical applications, the reporting process for the maximum spatial multiplexing layer support information can be implemented as follows: The terminal responds to the network-side capability query signaling and reports to the base station the maximum spatial multiplexing layer support information for downlink reception, indicating a transmission capability of 5 or 6 layers. That is, in practical applications, if the network needs to send a data stream to the terminal, it can first send a capability query signaling to the terminal; after receiving the capability query signaling from the network side, the terminal can respond to the signaling and report the maximum spatial multiplexing layer support information to the base station.

[0101] In one example embodiment, the transmission capability of Layer 5 or Layer 6 may include, but is not limited to:

[0102] ① Whether it supports downlink transmission at a maximum of layer 5 or 6 under specific transmission environments. Specific transmission environments include at least one of the following: a transmission environment at a first speed, a transmission environment with a first delay extension, a transmission environment at a second speed, and a transmission environment with a second delay extension; wherein, the first speed is less than the second speed; and the first delay is less than the second delay. For example, the transmission environment at the first speed can be a low-speed transmission environment, the transmission environment under the first delay spread can be a low-delay spread transmission environment, the transmission environment at the second speed can be a high-speed transmission environment, and the transmission environment under the second delay spread can be a high-delay spread transmission environment. In practical applications, due to the relative motion between the terminal and the base station, the carrier frequency of the received signal undergoes Doppler shift. This Doppler shift leads to a broadening of the power spectrum of the received signal, known as frequency dispersion or frequency chromatic aberration. Furthermore, when the relative speed between the terminal and the base station is low, the Doppler shift is also low, resulting in a weaker frequency dispersion or chromatic aberration, with less impact on signal reception reliability. Conversely, when the relative speed between the terminal and the base station is high, the Doppler shift is also high, resulting in a stronger frequency dispersion or chromatic aberration, which has a greater impact on signal reception reliability. Reliability is significantly affected; the time delay spread described here refers to the time difference between the arrival time of a signal at the terminal after passing through different paths in a multipath propagation environment; in practical applications, when a signal is emitted from a base station, it will propagate through multiple paths, each with a different length, resulting in different arrival times at the terminal. This time difference can be called time delay spread; at the same time, the transmission environment under low time delay spread described here can be TDLA30-10; when the relative moving speed between the terminal and the base station is high, the Doppler frequency shift is also high, resulting in strong frequency dispersion or frequency chromatic aberration, which has a significant impact on signal reception reliability; the transmission environment under high time delay spread described here can be TDLC300-100. In some examples, the low moving speed scenario can be below 3km / h, and the high moving speed scenario can be above 100km / h.

[0103] ② Whether it supports downlink transmission at a maximum of 5 or 6 layers under specific antenna implementation methods on the base station side or terminal side. The specific antenna implementation methods on the base station side or terminal side described here may include, but are not limited to, the number of antennas and the correlation between antennas, etc.

[0104] ③ Whether it supports the configuration of a specific demodulation reference signal (DMRS).

[0105] The specific demodulation reference signal (DMRS) configuration described herein may include, but is not limited to, the demodulation reference signal type, the symbol length of the demodulation reference signal, additional positions of the demodulation reference signal, and the version of the demodulation reference signal, etc.; at the same time, the demodulation reference signal type described herein may include demodulation reference signal type 1 and demodulation reference signal type 2, etc.

[0106] It should be noted that Demodulation Reference Signal Type 1 (DMRS Type 1) and Demodulation Reference Signal Type 2 (DMRS Type 2) refer to two core configuration modes defined by 3GPP (the 5G international standards organization) in TS 38.211. Demodulation Reference Signal Type 1 uses a discrete symbol layout, with the reference signal distributed across multiple time-domain symbols of the PDSCH (Physical Downlink Shared Channel), supporting up to 8 DMRS ports, suitable for slow-changing channels (such as low-speed terminal movement and low-latency extended scenarios). Demodulation Reference Signal Type 2 uses a centralized symbol layout, with the reference signal concentrated at the beginning of the PDSCH, supporting up to 12 DMRS ports, suitable for fast-changing channels (such as high-speed terminal movement and high Doppler shift scenarios). When the terminal supports Demodulation Reference Signal Type 2, the base station can schedule Layer 6 transmission in high-speed scenarios; if only Demodulation Reference Signal Type 1 is used, Layer 6 transmission must be restricted to low-speed scenarios.

[0107] The symbol length of the demodulation reference signal described here includes single-symbol demodulation reference signals and double-symbol demodulation reference signals, etc. A single-symbol demodulation reference signal refers to a signal occupying one consecutive OFDM (Orthogonal Frequency Division Multiplexing) symbol in the time domain, supporting up to 8 DMRS ports, suitable for Layer 5 transmission in low-mobility (e.g., walking, stationary) and low-latency scenarios. A double-symbol demodulation reference signal refers to a signal occupying two consecutive OFDM symbols in the time domain, supporting up to 12 DMRS ports, suitable for Layer 6 transmission in high-mobility (e.g., vehicle-mounted, high-speed rail) and high-frequency (e.g., FR2) scenarios.

[0108] The additional positions of the demodulation reference signal described here may include, but are not limited to, 0 additional positions, 1 additional position, 2 additional positions, and 3 additional positions, etc. It should be noted that additional positions refer to the additional symbol configuration options of the demodulation reference signal (DMRS) in the time domain. The time domain configuration of the DMRS is divided into basic symbols and additional symbols, which together constitute a complete reference signal sequence. The basic DMRS symbol is the core reference symbol of the DMRS and must be configured in a fixed position. An additional position refers to the number of additional DMRS symbols added in the time domain beyond the basic symbols. 0 additional positions means no additional symbols are added; 1 additional position, 2 additional positions, and 3 additional positions mean adding 1, 2, and 3 discrete DMRS symbols after the basic symbols, respectively. Each additional position corresponds to a fixed OFDM symbol time slot.

[0109] The demodulation reference signal version described herein may include, but is not limited to, at least one of Release 15 (R15) and Release 18 (R18). It should be noted that Release 15 refers to the first basic standard version of 5G, and Release 18 refers to the first standard version for 5G-Advanced (5G-A). The demodulation reference signal in Release 18 can also be referred to as an enhanced demodulation reference information type (i.e., enhanced DMRS). It should also be noted that in practical applications, on the one hand, because Layer 6 transmission requires high accuracy in downlink channel estimation, a denser DMRS configuration is needed; however, on the other hand, because different densities of DMRS configuration occupy different radio resources, when more radio resources are occupied (such as the dual-symbol DMRS of Release 18 + 2 additional positions), the peak rate may actually be lower than that of downlink 4-stream transmission using a conventional DMRS configuration. Therefore, even if a terminal supports Layer 6 transmission, it may only support a portion of the DMRS configuration, or implement different DMRS configurations differently.

[0110] ④ Whether it supports specific resource allocation types for the Physical Downlink Shared Channel (PDSCH); where the resource allocation types described here may include, but are not limited to, Type A and Type B, etc. It should also be noted that since Type B only supports a maximum of one additional DMRS symbol, it limits the accuracy of channel estimation and significantly restricts Layer 6 transmission performance; therefore, the terminal may not be able to support Layer 6 data stream transmission (6-layer transmission) for Type B.

[0111] ⑤ Does it support specific modulation orders? Specific modulation orders mentioned here may include, but are not limited to, QPSK (Physical Downlink Shared Channel), 16QAM (Quadrature Amplitude Modulation), 64QAM, 256QAM, and 1024QAM, etc. It should also be noted that due to severe interference between transport layers 5 and 6, different modulation orders correspond to different demodulation thresholds, which may result in transport layer 6 not being able to support all higher-order modulation orders.

[0112] ⑥ Does it support specific receiving algorithms? Specifically, the specific receiving algorithms described here may include, but are not limited to, MMSE-IRC (Minimum Mean Square Error-Interference Rejection Combining) algorithm, E-MMSE-IRC (Enhanced-Minimum Mean Square Error-Interference Rejection Combining) algorithm, and R-ML (Reduced-Maximum Likelihood) algorithm. It should also be noted that advanced interference processing algorithms can effectively eliminate interference between transport layers 5 or 6. Therefore, interference processing based on advanced interference processing algorithms can effectively improve the downlink transmission peak rate.

[0113] ⑦ Terminal types supported by transmission capabilities; specifically, the terminal types described here include, but are not limited to, handheld terminals, foldable terminals, vehicle-mounted terminals, industrial terminals, and fixed wireless access (FWA) terminals, etc.; it should be noted that, due to the different antenna arrangements of different types of terminals, small terminals may not be able to be configured with 6 antennas, which may result in small terminals not being able to support data transmission of 5 or 6 transmission layers.

[0114] ⑧ The frequency range applicable to the transmission capability; specifically, the frequency range described here may include, but is not limited to, the FR1 band and the FR2 band, etc. It should be noted that the FR1 band (also known as the Sub-6GHz band) specifically refers to the frequency band between 450MHz and 7.125GHz. The FR2 band (also known as the millimeter-wave band) specifically refers to the frequency band between 24.25GHz and 52.6GHz.

[0115] It should be further noted that if the terminal does not support the "maximum 5 or 6 transmission layers" transmission under the transmission environment, antenna implementation, reference signal configuration, resource allocation type, modulation order, receiving algorithm, terminal type, and frequency range described above, the terminal can also report to the base station that the downlink maximum 6 or 5 layer transmission performance is limited under a specific configuration or scenario.

[0116] In one exemplary embodiment, the reporting granularity of the transmission capabilities of the 5th or 6th transport layer described above may include, but is not limited to, per user equipment (i.e., per UE), per band, per band combination, per feature set, and per feature set per component carrier (per FSPC, per feature set per component carrier), etc. By setting different reporting granularities, different types of terminals can be supported to select different reporting methods according to their chip complexity.

[0117] In an exemplary embodiment, after receiving the transmission capability reported by the terminal, the base station can allocate a corresponding signal configuration to the terminal. Specifically, this can be achieved as follows: the base station configures a signal configuration corresponding to the downlink received transmission capability for the terminal and schedules the transmission of the physical downlink shared channel. The transmission capability indicates that the terminal supports a maximum number of spatial multiplexing layers for downlink reception, which is either 5 layers or 6 layers. Specifically, during the process of the base station configuring the signal configuration corresponding to the transmission capability for the terminal, this can be achieved as follows: configuring channel state information measurement corresponding to the transmission capability for the terminal; furthermore, configuring channel state information measurement corresponding to the transmission capability for the terminal can be achieved as follows: configuring a channel state information reference signal corresponding to the transmission capability for the terminal, and configuring the terminal to report channel state information when the maximum rank indicator is 6. In other words, in practical applications, during the process of the base station configuring channel state information measurement to the terminal, the base station can configure the terminal to use the channel state information reference signal CRS-RS (Cross-connect Redundancy Switching-Reference Signal) and configure the terminal to report channel state information with a maximum RI (Rank Indicator) of 6.

[0118] In one example embodiment, after signal configuration is completed, the terminal capability reporting method may further include: the terminal reporting channel state information to the base station when the maximum rank indicator is 6; the base station determining whether the terminal's channel environment is suitable for downlink maximum layer 5 or 6 transmission based on the channel state information. The specific determination process for the channel environment can be implemented as follows: if the channel state information indicates that the terminal is currently in a high-speed transmission environment and requires the configuration of a demodulation reference signal with a first preset density, then it is determined that the terminal's channel environment is not suitable for downlink maximum layer 5 or 6 transmission; if the channel state information meets the preset channel environment, then it is determined that the terminal's channel environment is suitable for downlink maximum layer 5 or 6 transmission. Further, if the terminal's channel environment is not suitable for downlink maximum layer 5 or 6 transmission, then a demodulation reference signal with a second preset density is configured for the terminal using a Rank 4+ approach to obtain the terminal's optimal downlink rate; if the terminal's channel environment is suitable for downlink maximum layer 5 or 6 transmission, then downlink maximum layer transmission is configured for the terminal according to the receiving algorithms supported by the terminal. It should be noted that Rank4+ refers to a transmission method that supports ranks of 4 and above.

[0119] In one exemplary embodiment, configuring downlink maximum layer transmission for the terminal based on the receiving algorithm supported by the terminal can be achieved as follows: If the terminal does not support a specific receiving algorithm, single-user MIMO Rank 6 transmission is scheduled for the terminal to obtain the maximum throughput of the terminal; if the terminal supports a specific receiving algorithm, other terminals corresponding to the terminal are matched, and multi-user MIMO transmission is invoked for the terminal and other terminals to obtain the highest total network throughput corresponding to the terminal and other terminals; wherein, during the scheduling of multi-user MIMO transmission, if the total number of the terminal and other terminals is greater than a first preset number threshold, a Rel-18 enhanced demodulation reference signal is scheduled to support the transmission of data streams with a maximum layer of 24. It should be noted that MIMO Rank 6 transmission refers to the transmission mode with a rank of 6 used in a 5G multiple-input multiple-output (MIMO) system.

[0120] The following section will further explain and illustrate the specific process for determining the channel environment.

[0121] In practical applications, the terminal first reports channel state information to the base station. The base station then determines whether the terminal's channel conditions are suitable for transmission at transport layer 5 or transport layer 6 based on the reported channel state information. Specifically, this can be achieved in the following ways: First, if the terminal is currently in a high-speed mobile scenario (or with high Doppler shift or high-frequency dispersion, etc.), and the terminal requires a more dense DMRS reference signal for configuration in the time domain; however, since overly dense reference signal configuration will reduce peak throughput, the terminal needs to use a lower-density DMRS time domain configuration at Rank 4+ to obtain the optimal downlink rate. Second, if the terminal's current channel conditions are good (i.e., the terminal is currently in a low-speed mobile scenario or with low Doppler shift or low-frequency dispersion, etc., and does not require a dense DMRS reference signal for configuration in the time domain), and the terminal does not support advanced receiving algorithms such as MMSE-IRC, E-MMSE-IRC, and R-ML, then the base station schedules single-user SU-MIMO for the terminal. Rank 6 transmission is used to obtain the maximum throughput for the user. On the other hand, if the terminal's current channel conditions are good (i.e., the terminal is currently in a low-speed movement scenario, or has low Doppler shift or low frequency domain dispersion, and does not require time-domain dense DMRS reference signals for configuration), and the terminal supports advanced receiving algorithms such as MMSE-IRC, E-MMSE-IRC, and R-ML, the base station can match this terminal with other terminals and schedule multi-user MU-MIMO transmission to obtain the highest total network throughput. At the same time, during the scheduling of multi-user MU-MIMO transmission, when the total number of streams of all scheduled terminals is greater than 12, the base station schedules Rel-18 enhanced DMRS to support a maximum of 24 streams.

[0122] In an exemplary embodiment, the terminal capability reporting method may further include: if the terminal supports a specific receiving algorithm, then sending auxiliary information to the terminal so that the terminal can receive multi-level data streams sent by the base station based on the auxiliary information and the receiving algorithm; wherein, the auxiliary information described herein may include, but is not limited to, first auxiliary information corresponding to the MMSE-IRC algorithm, second auxiliary information corresponding to the E-MMSE-IRC algorithm, and third auxiliary information corresponding to the R-ML algorithm, etc.; further, the first auxiliary information described herein may include, but is not limited to, the number of multiplexed users, the modulation order of multiplexed users, the number of multiplexed user streams, the current transmission time-frequency resource allocation information of multiplexed users, the port allocation information of the DMRS of multiplexed users, the PT-RS reference signal configuration information of multiplexed users, the CSI-RS reference signal configuration information of multiplexed users, the TRS reference signal configuration information of multiplexed users, and the modulation and coding strategy table information configured by the network for multiplexed users, etc. The second auxiliary information described herein may include, but is not limited to, multiplexed user channel information, number of multiplexed users, modulation order of multiplexed users, number of multiplexed user streams, current transmission time-frequency resource allocation information of multiplexed users, port allocation information of multiplexed user DMRS, configuration information of multiplexed user PT-RS reference signal, configuration information of multiplexed user CSI-RS reference signal, configuration information of multiplexed user TRS reference signal, and modulation and coding strategy table information configured by the network for multiplexed users, etc.; the third auxiliary information described herein may include, but is not limited to, constellation diagram information at the RE level of multiplexed users, number of multiplexed users, modulation order of multiplexed users, number of multiplexed user streams, current transmission time-frequency resource allocation information of multiplexed users, port allocation information of multiplexed user DMRS, configuration information of multiplexed user PT-RS reference signal, configuration information of multiplexed user CSI-RS reference signal, configuration information of multiplexed user TRS reference signal, and modulation and coding strategy table information configured by the network for multiplexed users, etc.

[0123] The following section will further explain and illustrate the auxiliary information sent by the terminal to the base station. Specifically, in practical applications, for terminals capable of advanced reception algorithms, the base station also needs to send auxiliary information to ensure that the terminal can perform relevant reception. In addition to the basic auxiliary information, the E-MMSE-IRC algorithm requires additional reuse of user channel information; while the R-ML algorithm requires additional reuse of constellation diagram information at the user RE (Resource Element, subcarrier) level for interference symbol search. Furthermore, the basic auxiliary details described herein may include, but are not limited to, the number of multiplexed users, the modulation order of multiplexed users (QPSK, 16QAM, 64QAM, 256QAM), the number of multiplexed user streams (Layer), the current transmission time-frequency resource allocation information of multiplexed users, the port allocation information of multiplexed user DMRS, the configuration information of multiplexed user PT-RS (Phase-Tracking Reference Signals), CSI-RS (Channel State Information-Reference Signal), TRS (Tracking Reference Signal), and the modulation and coding strategy table information configured by the network for multiplexed users, etc.

[0124] In one example embodiment, the terminal capability reporting method may further include: the base station scheduling downlink data for the terminal and simultaneously allocating hybrid automatic repeat request-acknowledgment (HARQ) feedback to the terminal; if the interval between the allocated HARQ feedback time and the reception time of the received downlink data is greater than or equal to a first duration (more specifically, when the interval between the last symbol of the PDSCH channel carrying the transport block and the first uplink symbol of the resource used for HARQ feedback is greater than the first duration), the terminal sends a HARQ to the base station; wherein, the first duration described herein is related to the layer number of the downlink data received by the terminal. That is, in practical applications, the 5G standard specifies the downlink data reception processing time (PDSCH processing time), but the current downlink data reception processing time is unrelated to the terminal's reception capability. However, the computational complexity of a 6Rx terminal receiving data streams from transport layers 5 or 6 is significantly increased, potentially rendering the originally specified processing time insufficient and requiring additional processing time. Therefore, this example embodiment defines a feedback time for Hybrid Automatic Repeat Request-Acknowledgment (HARQ-ACK). In practical applications, the base station allocates HARQ-ACK feedback to the terminal. If the interval between the allocated HARQ-ACK feedback time and the reception time of the received downlink data is greater than a first duration, the terminal needs to send a HARQ-ACK to the base station. Furthermore, the first duration described here is related to the number of data layers received by the terminal; that is, the more data layers the terminal receives, the longer the first duration, and vice versa. In practical applications, the first duration can be set according to actual needs; this example does not impose any special restrictions on this.

[0125] Thus, the terminal capability reporting method described in the exemplary embodiments of this disclosure has been fully implemented. Based on the foregoing description, the terminal capability reporting method described in the exemplary embodiments of this disclosure has at least the following advantages: On the one hand, it defines that a multi-antenna terminal can report the maximum downlink data stream transmission capability of 5 or 6 transmission layers to the base station based on the network capability query signaling issued by the network side; at the same time, considering that different types of terminals have different implementation complexities, and the conclusion obtained through link-level simulation studies that "the terminal can achieve better performance than the streaming data transmission of 2 or 4 transmission layers under limited simulation configurations," the terminal's transmission capability is further designed to include, but is not limited to, specific characteristics such as supported scenarios, antenna configuration, reference signal configuration modulation order, and receiver algorithm; on the other hand, due to the size limitation of the handheld terminal itself, the correlation between antennas of a 6Rx terminal may be high, and the 6 transmission layers... The increased complexity of the baseband algorithm processing matrix for downlink data reception, with its larger matrix dimension, may further sacrifice algorithm performance. Therefore, in many configurations, it cannot achieve performance superior to 2-layer or 4-layer streaming data transmission. Thus, in certain specific scenarios, 4-layer streaming data transmission may still be applicable. Furthermore, the specific implementation methods, such as size, antenna arrangement, and baseband performance, inevitably have different impacts on different types of 6Rx terminals. Therefore, terminals cannot simply report support for up to 6 layers of transmission to the base station. Based on this, it is necessary to clarify the use cases, applicable network configurations, and receiver implementation methods for terminals supporting up to 6 layers of transmission to avoid the network indiscriminately scheduling 6-layer transmission for terminals, resulting in network performance that is actually lower than the original 2-layer or 4-layer streaming data transmission, thus wasting network resources.

[0126] The following are embodiments of the apparatus disclosed herein, which can be used to execute embodiments of the method disclosed herein. For details not disclosed in the apparatus embodiments of this disclosure, please refer to the embodiments of the method disclosed herein.

[0127] This disclosure also provides a terminal capability reporting device in an exemplary embodiment. Specifically, referring to FIG6, the terminal capability reporting device may include a support information reporting module 610. Wherein:

[0128] The information reporting module 610 can be used to report information about the maximum number of spatial multiplexing layers for downlink reception to the base station via the terminal, which is either 5 or 6 layers.

[0129] In one exemplary embodiment of this disclosure, the terminal reports to the base station that the maximum number of spatial multiplexing layers for downlink reception is supported by 5 or 6 layers, including: the terminal responding to the capability query signaling on the network side and reporting to the base station that the maximum number of spatial multiplexing layers for downlink reception is supported by 5 or 6 layers.

[0130] In one exemplary embodiment of this disclosure, the 5-layer or 6-layer transmission capability includes at least one of the following: whether it supports downlink transmission of up to 5 or 6 layers under a specific transmission environment; whether it supports downlink transmission of up to 5 or 6 layers under a specific antenna implementation method on the base station side or terminal side; whether it supports the configuration of a specific demodulation reference signal (DMRS); whether it supports a specific resource allocation type for the downlink data sharing channel (PDSCH); whether it supports a specific modulation order; whether it supports a specific receiving algorithm; the terminal type supported by the transmission capability; and the frequency range to which the transmission capability applies.

[0131] In one exemplary embodiment of this disclosure, the specific transmission environment includes at least one of a transmission environment at a first speed, a transmission environment with a first delay spread, a transmission environment at a second speed, and a transmission environment with a second delay spread; wherein the first speed is less than the second speed; the first delay is less than the second delay; the specific antenna implementation on the base station side or terminal side includes at least one of the number of antennas and the correlation between antennas; the specific demodulation reference signal (DMRS) configuration includes at least one of the demodulation reference signal type, the symbol length of the demodulation reference signal, the additional position of the demodulation reference signal, and the version of the demodulation reference signal; the specific receiving algorithm includes at least one of the MMSE-IRC algorithm, the E-MMSE-IRC algorithm, and the R-ML algorithm; the terminal type includes at least one of a handheld terminal, a foldable terminal, a vehicle-mounted terminal, an industrial terminal, and a fixed wireless access terminal; and the frequency range includes at least one of the FR1 band and the FR2 band.

[0132] In an exemplary embodiment of this disclosure, the demodulation reference signal type includes at least one of demodulation reference signal type 1 and demodulation reference signal type 2; the symbol length of the demodulation reference signal includes at least one of a single-symbol demodulation reference signal and a double-symbol demodulation reference signal; the additional positions of the demodulation reference signal include at least one of 0 additional positions, 1 additional position, 2 additional positions, and 3 additional positions; and the version of the demodulation reference signal includes at least one of R15 version and R18 version.

[0133] In one exemplary embodiment of this disclosure, the reporting granularity of the 5-layer or 6-layer transmission capability includes at least one of each user equipment, each frequency band, each frequency band combination, each feature set, and each feature set of each carrier unit.

[0134] In one exemplary embodiment of this disclosure, the terminal capability reporting device further includes:

[0135] The signal configuration module can be used by the base station to configure a signal configuration corresponding to the downlink reception transmission capability for the terminal, and to schedule the transmission of the physical downlink shared channel. The transmission capability indicates that the terminal supports a maximum number of spatial multiplexing layers for downlink reception, which is either 5 layers or 6 layers.

[0136] In one exemplary embodiment of this disclosure, configuring a signal configuration corresponding to the transmission capability for a terminal includes: configuring a channel state information measurement corresponding to the transmission capability for the terminal; wherein configuring a channel state information measurement corresponding to the transmission capability for the terminal includes: configuring a channel state information reference signal corresponding to the transmission capability for the terminal, and configuring the terminal to report channel state information when the maximum rank indicator is 6.

[0137] In one exemplary embodiment of this disclosure, the terminal capability reporting device further includes:

[0138] The channel state information reporting module can be used to report channel state information to the base station through the terminal when the maximum rank indicator is 6;

[0139] The channel environment determination module can be used to determine whether the channel environment of the terminal is suitable for downlink transmission at a maximum of layer 5 or layer 6 based on the channel state information by the base station.

[0140] In an exemplary embodiment of this disclosure, determining whether the channel environment of a terminal is suitable for downlink transmission at a maximum of 5 or 6 layers based on channel state information includes: if the channel state information indicates that the terminal is currently in a high-speed transmission environment and requires the configuration of a demodulation reference signal with a first preset density, then it is determined that the channel environment of the terminal is not suitable for downlink transmission at a maximum of 5 or 6 layers; if the channel state information satisfies the preset channel environment, then it is determined that the channel environment of the terminal is suitable for downlink transmission at a maximum of 5 or 6 layers.

[0141] In one exemplary embodiment of this disclosure, the terminal capability reporting device further includes:

[0142] The first configuration module can be used to configure a demodulation reference signal with a second preset density in the Rank4+ manner if the channel environment of the terminal is not suitable for downlink transmission of up to 5 or 6 layers, so as to obtain the optimal downlink rate of the terminal.

[0143] The second configuration module can be used to configure downlink maximum layer transmission for the terminal according to the receiving algorithm that the terminal can support if the channel environment of the terminal is suitable for downlink maximum layer 5 or 6 layer transmission.

[0144] In one exemplary embodiment of this disclosure, configuring downlink maximum layer transmission for the terminal according to the receiving algorithm supported by the terminal includes: if the terminal does not support a specific receiving algorithm, scheduling single-user MIMO Rank6 transmission for the terminal to obtain the maximum throughput of the terminal; if the terminal supports a specific receiving algorithm, matching other terminals corresponding to the terminal, and calling multi-user MIMO transmission for the terminal and other terminals to obtain the highest total network throughput corresponding to the terminal and other terminals.

[0145] In one exemplary embodiment of this disclosure, during the scheduling of multi-user MIMO transmission, if the total number of the terminal and other terminals exceeds a first preset number threshold, a Rel-18 enhanced demodulation reference signal is scheduled to support the transmission of data streams with a maximum level of 24.

[0146] In one exemplary embodiment of this disclosure, the terminal capability reporting device further includes:

[0147] The auxiliary information delivery module can be used to deliver auxiliary information to the terminal if the terminal supports a specific receiving algorithm, so that the terminal can receive multi-level data streams delivered by the base station based on the auxiliary information and the receiving algorithm.

[0148] In one exemplary embodiment of this disclosure, the auxiliary information includes at least one of the following: first auxiliary information corresponding to the MMSE-IRC algorithm, second auxiliary information corresponding to the E-MMSE-IRC algorithm, and third auxiliary information corresponding to the R-ML algorithm; the first auxiliary information includes at least one of the following: number of multiplexed users, modulation order of multiplexed users, number of multiplexed user streams, current transmission time-frequency resource allocation information of multiplexed users, port allocation information of multiplexed user DMRS, PT-RS reference signal configuration information of multiplexed users, CSI-RS reference signal configuration information of multiplexed users, TRS reference signal configuration information of multiplexed users, and modulation and coding strategy table information configured by the network for multiplexed users; the second auxiliary information includes multiplexed user channel information, number of multiplexed users, modulation order of multiplexed users, and multiplexed user streams. The third auxiliary information includes at least one of the following: the number of multiplexed users, the current transmission time-frequency resource allocation information of multiplexed users, the port allocation information of the DMRS of multiplexed users, the PT-RS reference signal configuration information of multiplexed users, the CSI-RS reference signal configuration information of multiplexed users, the TRS reference signal configuration information of multiplexed users, and the modulation and coding strategy table information configured by the network for multiplexed users;

[0149] In one exemplary embodiment of this disclosure, the terminal capability reporting device further includes:

[0150] The third configuration module can be used to allocate hybrid automatic repeat request-acknowledgment response feedback to the terminal through the base station;

[0151] The confirmation response feedback module can be used to send a hybrid automatic repeat request-acknowledgment response to the base station if the interval between the feedback time of the allocated hybrid automatic repeat request-acknowledgment response and the reception time of the received downlink data is greater than or equal to a first duration.

[0152] In one exemplary embodiment of this disclosure, the first duration is related to the number of layers of downlink data received by the terminal.

[0153] The specific details of each module in the aforementioned terminal capability reporting device have been described in detail in the corresponding terminal capability reporting method, so they will not be repeated here.

[0154] As used herein, the terms “component,” “module,” and “system,” etc., are intended to refer to a computer-related entity. It can be hardware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, executable code, a thread of execution, a program, and / or a computer. For illustration, an application running on a server and the server itself can both be components. One or more components may reside in a process and / or a thread of execution, and components may be located within a single computer and / or distributed across two or more computers.

[0155] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0156] Furthermore, although the steps of the method in this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and or one step may be broken down into multiple steps.

[0157] In exemplary embodiments of this disclosure, an electronic device capable of implementing the above-described method is also provided. The electronic device can be applied to a terminal and includes: a processor; a transceiver; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute any of the above-described terminal capability reporting methods applied to the terminal via executing the executable instructions. The electronic device can be applied to a base station and includes: a processor; a transceiver; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute any of the above-described terminal capability reporting methods applied to the base station via executing the executable instructions.

[0158] Those skilled in the art will understand that various aspects of this disclosure can be implemented as systems, methods, or program products. Therefore, various aspects of this disclosure can be specifically implemented in the following forms: entirely hardware implementations, entirely software implementations (including firmware, microcode, etc.), or implementations combining hardware and software aspects, collectively referred to herein as circuits, modules, or systems.

[0159] The electronic device 700 according to this embodiment of the present disclosure will now be described with reference to FIG7. The electronic device 700 shown in FIG7 is merely an example and should not be construed as limiting the functionality and scope of the embodiments of the present disclosure.

[0160] As shown in Figure 7, the electronic device 700 is presented in the form of a general-purpose computing device. The components of the electronic device 700 may include, but are not limited to: at least one processing unit 710, at least one storage unit 720, a bus 730 connecting different system components (including storage unit 720 and processing unit 710), and a display unit 740.

[0161] The storage unit stores program code that can be executed by the processing unit 710, causing the processing unit 710 to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of this disclosure. For example, the processing unit 710 can perform step S410 as shown in FIG4: the terminal reports to the base station the support information for the maximum number of spatial multiplexing layers for downlink reception as 5 or 6 layers.

[0162] Storage unit 720 may include a readable medium in the form of a volatile storage unit, such as at least one of a random access memory unit (RAM) 7201 and a cache memory unit 7202, and may further include a read-only memory unit (ROM) 7203.

[0163] The storage unit 720 may also include at least one of a program or utility 7204 having a set (at least one) program module 7205, such program module 7205 including but not limited to: an operating system, one or more application programs, other program modules and program data, each or some combination of these examples may include an implementation of a network environment.

[0164] Bus 730 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0165] Electronic device 700 can also communicate with one or more external devices 800 (e.g., keyboard, pointing device, Bluetooth device, etc.). Electronic device 700 can also communicate with one or more devices that enable a user to interact with it. Electronic device 700 can also communicate with any device that enables it to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 750. Furthermore, electronic device 700 can also communicate with one or more networks (e.g., at least one of a local area network (LAN), a wide area network (WAN), and a public network, such as the Internet) via network adapter 760. As shown, network adapter 760 communicates with other modules of electronic device 700 via bus 730. It should be understood that, although not shown in the figures, at least one of other hardware and software modules can be used in conjunction with electronic device 700, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0166] From the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, terminal device, or network device, etc.) to execute the methods according to the embodiments of this disclosure.

[0167] In exemplary embodiments of this disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the methods described above is stored. In some possible implementations, various aspects of this disclosure may also be implemented as a program product including program code that, when the program product is run on a terminal device, causes the terminal device to perform the steps of the various exemplary embodiments of this disclosure described in the "Exemplary Methods" section above.

[0168] The program product for implementing the above-described method according to embodiments of the present disclosure may employ a portable compact disc read-only memory (CD-ROM) and include program code, and may run on a terminal device, such as a personal computer. However, the program product of the present disclosure is not limited thereto. In this document, the readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0169] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0170] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0171] The program code contained on the readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0172] Program code for performing the operations of this disclosure can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0173] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0174] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for reporting terminal capabilities, the method being applied to a terminal, comprising: The terminal reports support information for the maximum number of spatial multiplexing layers used for downlink reception to the base station. The support information indicates that the maximum number of spatial multiplexing layers supported by the terminal is either 5 or 6.

2. The terminal capability reporting method according to claim 1, wherein, Report to the base station the support information for the maximum number of spatial multiplexing layers used for downlink reception, including: In response to a capability query signaling from the network side, the terminal reports its transmission capabilities to the base station; the transmission capabilities indicate that the terminal supports either 5 or 6 layers for downlink reception.

3. The method for reporting terminal capabilities according to any one of claims 1 to 2, wherein, The transmission capability includes at least one of the following: Does it support downlink transmission at a maximum of 5 or 6 layers under specific transmission environments? Does it support downlink transmission of up to 5 or 6 layers under specific antenna implementation methods on the base station side or terminal side? Does it support the configuration of a specific demodulation reference signal (DMRS)? Does it support specific resource allocation types for the downlink data sharing channel (PDSCH)? Does it support a specific modulation order? Does it support specific receiving algorithms? The types of terminals supported by the transmission capability; The frequency range to which the transmission capability applies.

4. The terminal capability reporting method according to claim 3, wherein, The specific transmission environment includes at least one of the following: a transmission environment at a first speed, a transmission environment with a first delay extension, a transmission environment at a second speed, and a transmission environment with a second delay extension; wherein the first speed is less than the second speed; and the first delay is less than the second delay. The specific antenna implementation method on the base station side or terminal side includes at least one of the following: the number of antennas and the correlation between antennas. The configuration of the specific demodulation reference signal (DMRS) includes at least one of the following: demodulation reference signal type, symbol length of demodulation reference signal, additional positions of demodulation reference signal, and version of demodulation reference signal; The specific receiving algorithm includes at least one of the MMSE-IRC algorithm, the E-MMSE-IRC algorithm, and the R-ML algorithm; The terminal type includes at least one of handheld terminals, foldable terminals, vehicle-mounted terminals, industrial terminals, and fixed wireless access terminals. The frequency range includes at least one of the FR1 and FR2 bands.

5. The terminal capability reporting method according to claim 4, wherein, The demodulation reference signal type includes at least one of demodulation reference signal type 1 and demodulation reference signal type 2; The symbol length of the demodulation reference signal includes at least one of a single-symbol demodulation reference signal and a double-symbol demodulation reference signal; The additional positions of the demodulation reference signal include at least one of 0 additional positions, 1 additional position, 2 additional positions, and 3 additional positions; The demodulation reference signal version includes at least one of R15 and R18.

6. The method for reporting terminal capabilities according to any one of claims 1 to 5, wherein, The granularity of the transmission capability reporting includes at least one of each user equipment, each frequency band, each frequency band combination, each feature set, and each feature set of each carrier unit.

7. The method for reporting terminal capabilities according to any one of claims 1 to 6, wherein, The method also includes: When the maximum rank indicator is 6, the terminal reports channel state information to the base station; the channel state information is used to instruct the base station to determine whether the terminal's channel environment is suitable for downlink transmission at a maximum of layer 5 or layer 6.

8. The method for reporting terminal capabilities according to any one of claims 1 to 7, wherein, The method also includes: Receive feedback from the base station regarding the Hybrid Automatic Repeat Request-Acknowledgement Response; If the interval between the feedback time of the allocated Hybrid Automatic Repeat Request-Acknowledgement Response and the reception time of the received downlink data is greater than or equal to the first duration, a Hybrid Automatic Repeat Request-Acknowledgement Response is sent back to the base station.

9. A method for reporting terminal capabilities, the method being applied to a base station, comprising: The receiving terminal reports support information for the maximum number of spatial multiplexing layers used for downlink reception, wherein the support information indicates that the terminal supports a maximum number of spatial multiplexing layers of either 5 or 6.

10. The terminal capability reporting method according to claim 9, wherein, The receiving terminal reports the maximum number of spatial multiplexing layers supported for downlink reception, including: Based on the downlink reception transmission capability, configure the signal configuration corresponding to the transmission capability for the terminal, and schedule the transmission of the physical downlink shared channel; the transmission capability indicates that the terminal supports a maximum number of spatial multiplexing layers for downlink reception, which is either 5 layers or 6 layers.

11. The terminal capability reporting method according to claim 10, wherein, Configuring a signal configuration for the terminal that corresponds to the transmission capability includes: Configure the terminal with channel state information measurement corresponding to the transmission capability.

12. The terminal capability reporting method according to claim 11, wherein, The step of configuring channel state information measurement for the terminal corresponding to the transmission capability includes: Configure a channel state information reference signal corresponding to the transmission capability for the terminal, and configure the terminal to report channel state information when the maximum rank indicator is 6.

13. The method for reporting terminal capabilities according to any one of claims 9 to 12, wherein, The method further includes: The channel state information reported by the receiving terminal when the maximum rank indicator is 6; Based on the channel state information, determine whether the terminal's channel environment is suitable for downlink transmission at a maximum of 5 or 6 layers.

14. The terminal capability reporting method according to claim 13, wherein, Determine whether the terminal's channel environment is suitable for downlink transmission at a maximum of Layer 5 or Layer 6 based on channel state information, including: If the channel state information indicates that the terminal is currently in a transmission environment at a first speed and needs to be configured with a demodulation reference signal with a first preset density, then it is determined that the terminal's channel environment is not suitable for downlink transmission at a maximum of 5 or 6 layers. If the channel state information meets the preset channel environment, then the terminal's channel environment is determined to be suitable for downlink transmission at a maximum of 5 or 6 layers.

15. The method for reporting terminal capabilities according to any one of claims 9 to 14, wherein, The method further includes: If the channel environment of the terminal is not suitable for downlink transmission of up to 5 or 6 layers, then the Rank4+ method is used to configure the terminal with a demodulation reference signal with a second preset density to obtain the optimal downlink rate of the terminal. If the channel environment of the terminal is suitable for downlink transmission of up to 5 or 6 layers, then the terminal is configured to perform downlink transmission of up to the maximum layer according to the receiving algorithm that the terminal can support.

16. The terminal capability reporting method according to claim 15, wherein, Based on the receiving algorithms supported by the terminal, configure the downlink maximum layer transmission for the terminal, including: If the terminal does not support a specific receiving algorithm, then single-user MIMO Rank6 transmission is scheduled for the terminal to obtain the maximum throughput of the terminal. If the terminal supports a specific receiving algorithm, then other terminals corresponding to that terminal are matched, and multi-user MIMO transmission is invoked for that terminal and other terminals to obtain the highest total network throughput corresponding to that terminal and other terminals.

17. The method for reporting terminal capabilities according to any one of claims 9 to 16, wherein, During the scheduling of multi-user MIMO transmission, if the total number of the terminal and other terminals exceeds a first preset threshold, the Rel-18 enhanced demodulation reference signal is scheduled to support the transmission of data streams with a maximum of 24 levels.

18. The method for reporting terminal capabilities according to any one of claims 9 to 17, wherein, The method for reporting terminal capabilities also includes: If the terminal supports a specific receiving algorithm, then auxiliary information is sent to the terminal so that the terminal can receive multi-level data streams sent by the base station based on the auxiliary information and the receiving algorithm.

19. The terminal capability reporting method according to claim 18, wherein, The auxiliary information includes at least one of the following: first auxiliary information corresponding to the MMSE-IRC algorithm, second auxiliary information corresponding to the E-MMSE-IRC algorithm, and third auxiliary information corresponding to the R-ML algorithm; The first auxiliary information includes at least one of the following: number of multiplexed users, modulation order of multiplexed users, number of multiplexed user streams, current transmission time-frequency resource allocation information of multiplexed users, port allocation information of multiplexed user DMRS, configuration information of multiplexed user PT-RS reference signal, configuration information of multiplexed user CSI-RS reference signal, configuration information of multiplexed user TRS reference signal, and modulation and coding strategy table information configured by the network for multiplexed users. The second auxiliary information includes at least one of the following: multiplexed user channel information, number of multiplexed users, modulation order of multiplexed users, number of multiplexed user streams, current transmission time-frequency resource allocation information of multiplexed users, port allocation information of multiplexed user DMRS, configuration information of multiplexed user PT-RS reference signal, configuration information of multiplexed user CSI-RS reference signal, configuration information of multiplexed user TRS reference signal, and modulation and coding strategy table information configured by the network for multiplexed users; The third auxiliary information includes at least one of the following: constellation diagram information at the RE level of multiplexed users, number of multiplexed users, modulation order of multiplexed users, number of multiplexed user streams, current transmission time-frequency resource allocation information of multiplexed users, port allocation information of multiplexed user DMRS, configuration information of multiplexed user PT-RS reference signal, configuration information of multiplexed user CSI-RS reference signal, configuration information of multiplexed user TRS reference signal, and modulation and coding strategy table information configured by the network for multiplexed users.

20. The method for reporting terminal capabilities according to any one of claims 9 to 19, wherein, The method further includes: Assign feedback to the terminal using a hybrid automatic repeat request-acknowledgment response; If the interval between the feedback time of the allocated Hybrid Automatic Repeat Request-Acknowledgement and the reception time of the received downlink data is greater than or equal to the first duration, the receiving terminal will send a Hybrid Automatic Repeat Request-Acknowledgement.

21. The terminal capability reporting method according to claim 20, wherein, The first duration is related to the number of layers of downlink data received by the terminal.

22. A terminal capability reporting system, comprising: The terminal and the base station, wherein the terminal is communicatively connected to the base station; The terminal is used to report support information for the maximum number of spatial multiplexing layers for downlink reception to the base station. The support information indicates that the maximum number of spatial multiplexing layers supported by the terminal is one of 5 layers and 6 layers. The base station is used to configure a signal configuration corresponding to the transmission capability reported by the terminal, and to schedule the transmission of the physical downlink shared channel; the transmission capability indicates that the maximum number of spatial multiplexing layers supported by the terminal for downlink reception is either 5 layers or 6 layers.

23. A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for reporting terminal capabilities as described in any one of claims 1 to 8 or 9 to 21.

24. An electronic device, comprising: processor; transceiver; as well as Memory for storing the executable instructions of the processor; The processor is configured to execute the terminal capability reporting method according to any one of claims 1 to 8 by executing the executable instructions.

25. An electronic device, comprising: processor; transceiver; as well as Memory for storing the executable instructions of the processor; The processor is configured to execute the terminal capability reporting method according to any one of claims 9 to 21 by executing the executable instructions.

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