Communication parameter configuration method, device, equipment, medium and program product

Abstract

The invention discloses a communication parameter configuration method and device, equipment, a medium and a program product. A base station side receives terminal capability information reported by a terminal; wherein the terminal capability is related to the data receiving capability of the terminal; the base station side configures a data transmission stream number and an antenna characteristic switching period according to the terminal capability information and the base station capability information, so that the antenna characteristic switching period is aligned with the duration of an OFDM symbol, and the data transmission stream number and the antenna characteristic switching period are issued to the terminal; wherein the capacity information of the base station is related to the data sending capacity of the base station, and the antenna characteristic switching period is a switching period of an antenna characteristic pattern within the duration of an OFDM (Orthogonal Frequency Division Multiplexing) symbol. By adopting the method and the device, the consistency of the virtual MIMO equivalent channel is realized by comprehensively configuring the data transmission stream number and the antenna characteristic switching period, so that the data can be smoothly transmitted.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a communication parameter configuration method, apparatus, device, medium, and program product. Background Technology

[0002] Multiple-in multiple-out (MIMO) systems are antenna systems that use multiple antennas at both the transmitting and receiving ends to greatly increase channel capacity, forming multiple channels between transmission and reception. However, the actual number of radio frequency (RF) channels at the transmitting or receiving end of existing practical MIMO systems is limited. The number of data streams that can be transmitted simultaneously is constrained by the physical number of RF channels at both ends. Therefore, due to limitations in RF front-end design, existing practical MIMO systems are not well-suited to the wireless channel environment, and there is room for further improvement.

[0003] To address the aforementioned issues, existing technologies have proposed a novel MIMO transmission scheme known as Virtual MIMO. In this scheme, the receiver can switch the receiver antenna characteristic pattern multiple times within the duration of an OFDM (Orthogonal Frequency Division Multiplexing) symbol and perform oversampling, thereby enabling the number of data streams that can be transmitted simultaneously to exceed the number of physical RF channels at the receiver.

[0004] However, the inventors have discovered that the existing technology has at least the following problems: the existing solutions may have a mismatch between the configured antenna characteristic switching period and the OFDM symbol length, which will result in different receiving antenna characteristic patterns for each OFDM symbol, directly leading to the failure of virtual MIMO system transmission. Summary of the Invention

[0005] The purpose of this invention is to provide a communication parameter configuration method, apparatus, device, medium, and program product. By comprehensively configuring the number of data transmission streams and the antenna characteristic switching period, the consistency of the virtual MIMO equivalent channel is achieved, thereby ensuring that data can be transmitted smoothly.

[0006] To achieve the above objectives, embodiments of the present invention provide a communication parameter configuration method applied to the base station side, the method comprising:

[0007] The terminal capability information reported by the receiving terminal is received; wherein the terminal capability is related to the data receiving capability of the terminal.

[0008] Based on the terminal capability information and base station capability information, configure the number of data transmission streams and the antenna characteristic switching period so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol; wherein, the base station capability information is related to the data transmission capability of the base station, and the antenna characteristic switching period is the switching period of the antenna characteristic pattern within the duration of one OFDM symbol;

[0009] The data transmission stream count and the antenna characteristic switching cycle are sent to the terminal.

[0010] As an improvement to the above scheme, the terminal capability information includes the number of receiving radio frequency channels and the number of antenna elements connected to each receiving radio frequency channel; the base station capability information includes the number of transmitting radio frequency channels.

[0011] As an improvement to the above scheme, the step of configuring the data transmission stream number and antenna characteristic switching period based on the terminal capability information and base station capability information, so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol, includes:

[0012] The number of data transmission streams is determined based on the number of receiving radio frequency channels, the number of antenna elements connected to each receiving radio frequency channel, and the number of transmitting radio frequency channels;

[0013] Based on the number of data transmission streams, determine the channel expansion factor of the receiving radio frequency channel;

[0014] The antenna characteristic switching period is determined based on the channel spread factor, such that the product of the antenna characteristic switching period and the channel spread factor satisfies the common divisor of the duration of the effective data of the OFDM symbol and the duration of the cyclic prefix.

[0015] As an improvement to the above scheme, the terminal capability information also includes an upper limit for antenna characteristic switching speed;

[0016] The step of configuring the number of data transmission streams and the antenna characteristic switching period based on the terminal capability information and the base station capability information, so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol, further includes:

[0017] The antenna characteristic switching period is determined based on the upper limit of the antenna characteristic switching speed, so that the antenna characteristic switching period is greater than or equal to the upper limit of the antenna characteristic switching speed.

[0018] As an improvement to the above scheme, the number of data transmission streams is less than or equal to the minimum of the number of transmitting radio frequency channels and the total number of antenna elements connected to the receiving radio frequency channels, and the number of data transmission streams is an integer multiple of the number of receiving radio frequency channels.

[0019] As an improvement to the above scheme, the upper limit of the antenna characteristic switching speed reported by the receiving terminal includes:

[0020] The terminal reports the hardware capability requirements of the antenna characteristic switching device; wherein the hardware capability requirements are related to the antenna characteristic switching speed.

[0021] This invention also provides another communication parameter configuration method, applied to the terminal side, the method comprising:

[0022] The terminal capability information is reported to the base station so that the base station can configure the number of data transmission streams and the antenna characteristic switching period according to the terminal capability information and the base station capability information, so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol; wherein, the terminal capability is related to the data receiving capability of the terminal, the base station capability information is related to the data transmitting capability of the base station, and the antenna characteristic switching period is the switching period of the antenna characteristic pattern within the duration of one OFDM symbol;

[0023] Receive the data transmission stream number and the antenna characteristic switching period sent by the base station.

[0024] As an improvement to the above solution, the method further includes:

[0025] The channel expansion factor of the receiving radio frequency channel is determined based on the number of data transmission streams.

[0026] Based on the channel expansion factor and the antenna characteristic switching period, different antenna characteristic patterns are switched and upsampled to create a virtual receiving radio frequency channel.

[0027] This invention also provides a communication parameter configuration device, applied to the base station side, the device comprising:

[0028] A terminal capability information receiving module is used to receive terminal capability information reported by the terminal; wherein, the terminal capability is related to the terminal's data receiving capability;

[0029] The communication parameter configuration module is used to configure the number of data transmission streams and the antenna characteristic switching period according to the terminal capability information and the base station capability information, so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol; wherein, the base station capability information is related to the data transmission capability of the base station, and the antenna characteristic switching period is the switching period of the antenna characteristic pattern within the duration of one OFDM symbol;

[0030] The communication parameter sending module is used to send the data transmission stream number and the antenna characteristic switching period to the terminal.

[0031] This invention also provides another communication parameter configuration device, applied to the terminal side, the device comprising:

[0032] The terminal capability information reporting module is used to report terminal capability information to the base station, so that the base station can configure the number of data transmission streams and the antenna characteristic switching period according to the terminal capability information and the base station capability information, and make the antenna characteristic switching period aligned with the duration of the OFDM symbol; wherein, the terminal capability is related to the data receiving capability of the terminal, the base station capability information is related to the data transmitting capability of the base station, and the antenna characteristic switching period is the switching period of the antenna characteristic pattern within the duration of one OFDM symbol;

[0033] The communication parameter receiving module is used to receive the data transmission stream number and the antenna characteristic switching period sent by the base station.

[0034] This invention also provides a communication parameter configuration device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the communication parameter configuration method as described in any of the above embodiments.

[0035] This invention also provides a computer-readable storage medium, which includes a stored computer program, wherein the computer program, when running, controls the device where the computer-readable storage medium is located to execute the communication parameter configuration method as described in any of the above embodiments.

[0036] This invention also provides a computer program product, which includes a computer program or computer instructions. When the computer program or computer instructions are executed by a processor, they implement the communication parameter configuration method as described in any of the above embodiments.

[0037] Compared with existing technologies, the communication parameter configuration method, apparatus, device, medium, and program products disclosed in this invention, based on existing virtual MIMO systems, consider the relationship between antenna characteristic switching period and OFDM symbol duration to configure the data transmission stream number and antenna characteristic switching period. This achieves the effect of aligning the antenna characteristic switching period with the OFDM symbol duration, ensuring consistent receiving antenna characteristic patterns for different OFDM symbols. It avoids situations where the equivalent channels corresponding to two symbols differ, preventing proper digital precoding and correct signal decoding. This effectively realizes the consistency of the virtual MIMO equivalent channel, thereby ensuring smooth data transmission. Attached Figure Description

[0038] Figure 1 This is a flowchart illustrating a communication parameter configuration method provided in an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram illustrating the principle of signal reception using different antenna characteristic patterns in an embodiment of the present invention;

[0040] Figure 3 This is another schematic diagram illustrating the principle of signal reception using different antenna characteristic patterns in this embodiment of the invention;

[0041] Figure 4 This is a flowchart illustrating another communication parameter configuration method provided in an embodiment of the present invention;

[0042] Figure 5 This is a schematic diagram of the structure of a communication parameter configuration device provided in an embodiment of the present invention;

[0043] Figure 6 This is a schematic diagram of another communication parameter configuration device provided in an embodiment of the present invention. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0046] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0047] See Figure 1 This is a flowchart illustrating a communication parameter configuration method provided by an embodiment of the present invention. The embodiment of the present invention provides a communication parameter configuration method applied to the base station side, and the method specifically includes steps S11 to S13:

[0048] S11. Receive terminal capability information reported by the terminal; wherein, the terminal capability is related to the terminal's data receiving capability;

[0049] S12. Based on the terminal capability information and base station capability information, configure the data transmission stream number and antenna characteristic switching period so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol; wherein, the base station capability information is related to the data transmission capability of the base station, and the antenna characteristic switching period is the switching period of the antenna characteristic pattern within the duration of one OFDM symbol;

[0050] S13. Send the data transmission stream number and the antenna characteristic switching cycle to the terminal.

[0051] It should be noted that the embodiments of the present invention are applicable to scenarios where data transmission and reception are performed in a virtual MIMO communication system. In virtual MIMO technology, the receiver can switch the antenna characteristic pattern of the receiver multiple times within the duration of an OFDM symbol and perform oversampling, thereby achieving the effect that the number of data transmission streams that can be transmitted simultaneously is greater than the number of physical radio frequency channels at the receiver.

[0052] To address the problem of data transmission failure in virtual MIMO systems caused by the failure to consider the configuration relationship between antenna characteristic switching period and OFDM symbol duration in existing technologies, this invention enhances existing virtual MIMO systems by optimizing the configuration of communication parameters such as the number of data transmission streams and the antenna characteristic switching period. Specifically, the terminal needs to report terminal capability information representing its own data reception capability to the base station. The base station, based on the terminal capability information and its own data transmission capability-related base station capability information, configures the number of data transmission streams and the antenna characteristic switching period. The configuration result must ensure that the antenna characteristic switching period is aligned with the duration of the OFDM symbol, where the duration of the OFDM symbol is the duration of the OFDM symbol after adding a cyclic prefix (CP). The base station sends the configured data transmission stream number and antenna characteristic switching period and other communication parameters to the terminal. The terminal determines the channel expansion factor of the receiving radio frequency channel based on the data transmission stream number, and then determines the number of different antenna characteristic patterns. The terminal switches between different antenna characteristic patterns (which may be the antenna's directivity, polarization, phase, etc.) according to the antenna characteristic switching period, and combines upsampling technology to create a virtual receiving radio frequency channel to achieve data transmission that meets the data transmission stream number.

[0053] By employing the technical means of this invention, based on the existing virtual MIMO system, the relationship between the antenna characteristic switching period and the duration of the OFDM symbol is considered when configuring the number of data transmission streams and the antenna characteristic switching period. This achieves the effect of aligning the antenna characteristic switching period with the duration of the OFDM symbol, ensuring that the receiving antenna characteristic patterns for different OFDM symbols are consistent. This avoids situations where the equivalent channels corresponding to two symbols differ, preventing proper digital precoding and correct signal decoding. It effectively realizes the consistency of the virtual MIMO equivalent channel, thereby ensuring that data can be transmitted smoothly.

[0054] As a preferred embodiment, the present invention further implements the above embodiments, wherein the terminal capability information includes the number of receiving radio frequency channels and the number of antenna elements connected to each receiving radio frequency channel; and the base station capability information includes the number of transmitting radio frequency channels.

[0055] Step S12, namely configuring the data transmission stream number and antenna characteristic switching period according to the terminal capability information and base station capability information, so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol, includes steps S121 to S123:

[0056] S121. Determine the number of data transmission streams based on the number of receiving radio frequency channels, the number of antenna elements connected to each receiving radio frequency channel, and the number of transmitting radio frequency channels;

[0057] S122. Determine the channel expansion factor of the receiving radio frequency channel based on the number of data transmission streams;

[0058] S123. Determine the antenna characteristic switching period based on the channel spread factor, so that the product of the antenna characteristic switching period and the channel spread factor satisfies the common divisor of the duration of the effective data of the OFDM symbol and the duration of the cyclic prefix.

[0059] Preferably, the number of data transmission streams is less than or equal to the minimum of the number of transmitting RF channels and the total number of antenna elements connected to the receiving RF channels, and the number of data transmission streams is an integer multiple of the number of receiving RF channels.

[0060] It should be noted that in a virtual MIMO communication system, the base station side (i.e., the transmitting end) is equipped with One transmit radio frequency channel, the terminal side (i.e., the receiver) is equipped with The system has N0 receive RF channels, and each receive RF channel is connected to N0 antenna elements. In this system, by using multiple different receiver antenna characteristic patterns to receive signals and upsampling them within one OFDM symbol duration, more virtual receive RF channels are simulated. This achieves the effect of supporting a data transmission stream greater than the actual number of receive RF channels without increasing the number of physical RF channels. Since the actual number of RF channels at the transmitter or receiver end of a MIMO system is limited, the number of data transmission streams N0 that the system can support simultaneously is limited. s Limited by the number of physical radio frequency channels at the transmitting and receiving ends, the following relationship must be satisfied:

[0061]

[0062] in, This indicates the total number of antenna elements at the receiving end. And N s It can be Divisible by an integer. Therefore, the antenna array connected to each receiving RF channel needs to be in... The receiver switches sequentially through different antenna characteristic patterns, with the antenna characteristic switching period T at the receiving end. p The following relationship must be satisfied:

[0063]

[0064] Among them, T s This represents the sampling interval of the original OFDM symbol before upsampling; m is a positive integer that can be set by the user and is related to the duration of the OFDM symbol and the hardware performance of the antenna characteristic switching device at the receiver.

[0065] For example, such as Figure 2 As shown, Figure 2 This is a schematic diagram illustrating the principle of signal reception using different antenna characteristic patterns in an embodiment of the present invention. Figure 2 This diagram illustrates signal reception using two different receiver antenna characteristic patterns within a sampling interval of an OFDM symbol. In this diagram, solid arrows represent the original sampling points of the OFDM symbol, while dashed arrows represent sampling points generated by upsampling at the receiver. If the antenna characteristic switching period does not match the duration of the OFDM symbol after adding the cyclic prefix (CP), for example, assuming the duration of the CP and the duration of the effective data portion of the OFDM symbol are respectively:

[0066]

[0067] The antenna characteristic switching period is:

[0068] T p =64T s ;

[0069] At this time, as Figure 3 As shown, Figure 3 This is another schematic diagram illustrating the principle of signal reception using different antenna characteristic patterns in this embodiment of the invention, due to the duration of CP. Cannot be switched by antenna characteristics during period T p Divisibility occurs because the receiving antenna characteristics differ for different OFDM symbols, resulting in differences in the equivalent channels corresponding to the two symbols, which makes proper digital precoding and correct signal decoding impossible.

[0070] Therefore, based on this, the embodiments of the present invention further optimize the configuration of the number of data transmission streams and the antenna characteristic switching period, based on the number of received radio frequency channels. The number of antenna elements N0 connected to each of the received radio frequency channels and the number of transmitted radio frequency channels The number of data transmission streams N is determined. s After determining the possible value range, further based on the data transmission stream number N... s This determines the number of antenna characteristic patterns used by the receiver for signal reception, which is also known as the channel spread factor of the receiving RF channel. Then, based on the channel expansion factor N p The antenna characteristic switching period is determined such that the product of the antenna characteristic switching period and the channel spread factor satisfies the duration of the effective data of the OFDM symbol. Duration of the cyclic prefix The greatest common divisor. That is, the antenna characteristic switching period T. p The following conditions also need to be met:

[0071] Where k1 is a positive integer;

[0072] Where k2 is a positive integer.

[0073] The above conditions indicate that T p N p yes and The greatest common divisor of N. A cycle is defined as switching sequentially from the first pattern to the last pattern. Since N = ... p There are different receiving antenna characteristic patterns, so satisfying the above conditions can guarantee that N N antennas will be effective within one OFDM duration. p The antenna characteristic pattern can be switched multiple times to ensure that the receiving antenna characteristic pattern for different OFDM symbols is consistent.

[0074] As a preferred embodiment, the present invention further implements the above embodiments, wherein the terminal capability information also includes an upper limit T for antenna characteristic switching speed. h .

[0075] Then step S12, namely configuring the number of data transmission streams and the antenna characteristic switching period according to the terminal capability information and the base station capability information, so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol, further includes step S124:

[0076] S124. Determine the antenna characteristic switching period based on the upper limit of the antenna characteristic switching speed, so that the antenna characteristic switching period is greater than or equal to the upper limit of the antenna characteristic switching speed.

[0077] In this embodiment of the invention, the base station switches antenna characteristics for a period T. p The configuration also needs to consider the switching speed achievable by the hardware capabilities of the terminal's antenna characteristic switching device. The terminal needs to limit its own antenna characteristic switching speed T. h As terminal capability information is reported to the base station, the base station performs an antenna characteristic switching period T. p In addition to meeting the conditions mentioned in the above embodiments, the following conditions also need to be met during the configuration process:

[0078] T p Greater than or equal to the upper limit of antenna characteristic switching speed T h That is, T p ≥T h .

[0079] Optionally, the base station receives the upper limit of antenna characteristic switching speed reported by the terminal, including:

[0080] The terminal reports the hardware capability requirements of the antenna characteristic switching device; wherein the hardware capability requirements are related to the antenna characteristic switching speed.

[0081] Specifically, in this embodiment of the invention, the terminal reports the antenna characteristic switching speed T. h There are two ways:

[0082] One method is to directly report the switching speed T of the antenna characteristic switching device. h The specific value.

[0083] Another approach is to predefine several hardware capability requirements, with the terminal reporting its own hardware capability requirements for the switching speed it can achieve as an index.

[0084] For example, as shown in Table 1, four levels of hardware capability requirements are specified:

[0085] Table 1

[0086]

[0087] Therefore, the base station can determine the corresponding upper limit of antenna characteristic switching speed T based on the hardware capability requirements reported by the terminal. h .

[0088] The base station completes the antenna characteristic switching period T p and data transmission stream number N s After configuration, the terminal needs to be informed. Optionally, the antenna characteristic switching speed T p The OFDM symbol sampling interval T can be used. s Units are used. For example, a base station requires the terminal to use units of T. p =2T s If the feature switching is performed periodically, the base station can notify the terminal of coefficient 2.

[0089] The embodiments of the present invention will be explained and illustrated using specific implementation scenarios.

[0090] In one specific implementation, consider μ = 0, Normal CP, In a virtual MIMO communication system, the base station is equipped with four transmit radio frequency channels, and the terminal is equipped with one receive radio frequency channel. This one receive radio frequency channel connects to four antenna elements, and the maximum speed of the antenna characteristic switching device is T. h =T s / 3. That is to say N0 = 4.

[0091] It should be noted that, This indicates the number of sampling points for the cyclic prefix CP of the OFDM symbol. This represents the number of sampling points for the valid data of an OFDM symbol. Current protocols specify the number of sampling points for an OFDM symbol as follows:

[0092]

[0093] The number of sampling points for the cyclic prefix CP is:

[0094]

[0095] The correspondence between the number of sampling points and the duration is as follows:

[0096]

[0097] Among them, T s =1 / (Δf) ref ·N f,ref ), Δf ref =15×103 Hz, and N f,ref =2048. μ is related to the subcarrier spacing, and its specific value will not be elaborated here.

[0098] First, the terminal needs to report its capabilities to the base station, including one receive radio frequency channel, four antenna elements, and the upper limit of antenna characteristic switching speed T. h =T s / 3.

[0099] Base station according to And N s It can be The divisibility condition allows the terminal to be equipped with 4-stream OFDM data, i.e., N. s =4. This leads to the channel expansion factor of the receiving RF channel. For configuring the antenna characteristic switching period, the receiving end antenna characteristic switching period must meet the following conditions:

[0100]

[0101] Where k1 is a positive integer;

[0102] Where k2 is a positive integer.

[0103] That is, T must be satisfied. p =mT s / 4, where m is a positive integer that can be set by the user. Since T p N p =mT s And T must be guaranteed p N p yes and Since the common divisors of 144 and 2048 are 1, 2, 4, 8, and 16, the possible values ​​of m are 1, 2, 4, 8, and 16. Correspondingly, the antenna characteristic switching period can be set as:

[0104]

[0105] Furthermore, considering that the antenna characteristic switching period must satisfy: T p ≥T h .

[0106] Considering that the upper limit of the terminal's hardware capabilities is T h =T s / 3, therefore the appropriate antenna characteristic switching period is T p =T s / 2.

[0107] Therefore, the base station notifies the terminal that it will transmit four streams of data and also informs the terminal of the handover speed coefficient, i.e., 1 / 2. During the duration of each OFDM symbol, the terminal switches according to the antenna characteristics over the period T. p =T s / 2, the antenna array connected to each receiving RF channel will sequentially use N... p = Four different antenna characteristic patterns are used to receive signals and upsample them to create three additional radio frequency channels, thus completing four-stream data transmission.

[0108] In another specific implementation, consider μ = 1, Normal CP, In a virtual MIMO communication system, the base station is equipped with four transmit radio frequency channels, and the terminal is equipped with one receive radio frequency channel, which is connected to four antenna elements. The terminal has four levels of hardware capability requirements, as shown in Table 3.

[0109] Table 3

[0110]

[0111]

[0112] Assuming that due to hardware limitations, the terminal can only meet hardware capability requirement 3, then the terminal reports the hardware capability index, i.e., "requirement 3," to the base station. At this point, the maximum speed of the antenna characteristic switching device is T. h =3T s .

[0113] The number of data transmission streams N can be obtained through calculation. s ≤4, if the base station simultaneously transmits 4 independent OFDM data streams, i.e., N s =4, thus obtaining the channel expansion factor N of the receiving RF channel. p =4. The antenna characteristic switching period must satisfy T. p =mT s / 4, due to T p N p =mT s T must be guaranteed p N p yes and The common divisor of 72 and 1024. Since the common divisors of 72 and 1024 are 1, 2, 4, and 8, the possible values ​​of m are 1, 2, 4, and 8. Accordingly, the antenna characteristic switching period can be set as:

[0114]

[0115] However, due to T h =3T sIf the receiving end hardware cannot support the simultaneous transmission of four data streams, then the base station will transmit N data streams. s A re-determination is performed if the base station simultaneously transmits two independent OFDM data streams, i.e., N. s =2, N p =2. The antenna characteristic switching period must satisfy T. p =mT s / 2, due to T p N p =mT s T must be guaranteed p N p yes and The common divisor of 72 and 1024. Since the common divisors of 72 and 1024 are 1, 2, 4, and 8, the possible values ​​of m are 1, 2, 4, and 8. Accordingly, the antenna characteristic switching period can be set as:

[0116]

[0117] Consider T h =3T s Therefore, the appropriate antenna characteristic switching period is T. p =4T s .

[0118] Therefore, the base station notifies the terminal that it will transmit two streams of data and also notifies the terminal of the handover speed coefficient, which is 4. During the duration of each OFDM symbol, the terminal follows T... p =4T s It uses two different beams to receive signals and upsamples them, creating an additional radio frequency channel to complete two-stream data transmission.

[0119] By employing the technical means of this invention, based on existing virtual MIMO systems, the relationship between the antenna characteristic switching period and the duration of OFDM symbols is considered when configuring the number of data transmission streams and the antenna characteristic switching period. This ensures that the number of data transmission streams is less than or equal to the minimum of the number of transmitting RF channels and the total number of antenna elements at the receiving end, and is divisible by the number of receiving RF channels. Simultaneously, the product of the antenna characteristic switching period and the channel extension factor of the virtual MIMO system must satisfy the common divisor of the CP duration and the effective data duration, achieving the effect of aligning the antenna characteristic switching period with the duration of OFDM symbols. This ensures that the receiving antenna characteristic patterns for different OFDM symbols are consistent, avoiding situations where the equivalent channels corresponding to two symbols differ, preventing proper digital precoding and correct signal decoding. This effectively achieves the consistency of the virtual MIMO equivalent channel, thereby ensuring smooth data transmission.

[0120] See Figure 4This is a flowchart illustrating another communication parameter configuration method provided by an embodiment of the present invention. The embodiment of the present invention provides a communication parameter configuration method applied to the terminal side, and the method specifically includes steps S21 and S22:

[0121] S21. Report terminal capability information to the base station so that the base station configures the number of data transmission streams and the antenna characteristic switching period according to the terminal capability information and the base station capability information, so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol; wherein, the terminal capability is related to the data receiving capability of the terminal, the base station capability information is related to the data transmitting capability of the base station, and the antenna characteristic switching period is the switching period of the antenna characteristic pattern within the duration of one OFDM symbol;

[0122] S22. Receive the data transmission stream number and the antenna characteristic switching period sent by the base station.

[0123] Preferably, the terminal capability information includes the number of receiving radio frequency channels and the number of antenna elements connected to each receiving radio frequency channel; the base station capability information includes the number of transmitting radio frequency channels.

[0124] Preferably, the number of data transmission streams is less than or equal to the minimum of the number of transmitting RF channels and the total number of antenna elements connected to the receiving RF channels, and the number of data transmission streams is an integer multiple of the number of receiving RF channels.

[0125] Preferably, the product of the antenna characteristic switching period and the channel spread factor of the received radio frequency channel satisfies the common divisor of the duration of the effective data of the OFDM symbol and the duration of the cyclic prefix; the channel spread factor is determined according to the number of data transmission streams.

[0126] Preferably, the terminal capability information further includes an upper limit for antenna characteristic switching speed, in which case the antenna characteristic switching period must also be greater than or equal to the upper limit for antenna characteristic switching speed.

[0127] In a preferred embodiment, the method further includes steps S23 and S24:

[0128] S23. Determine the channel expansion factor of the receiving radio frequency channel based on the number of data transmission streams;

[0129] S24. Based on the channel expansion factor and the antenna characteristic switching period, switch and upsample different antenna characteristic patterns to create a virtual receiving radio frequency channel.

[0130] It should be noted that the communication parameter configuration method applied to the terminal side provided in this embodiment of the invention corresponds one-to-one with all the process steps of the communication parameter configuration method applied to the base station side in the above embodiment. The working principle and beneficial effects of the two are the same, so they will not be described again.

[0131] By employing the technical means of this invention, based on the existing virtual MIMO system, the relationship between the antenna characteristic switching period and the duration of the OFDM symbol is considered when configuring the number of data transmission streams and the antenna characteristic switching period. This achieves the effect of aligning the antenna characteristic switching period with the duration of the OFDM symbol, ensuring that the receiving antenna characteristic patterns for different OFDM symbols are consistent. This avoids situations where the equivalent channels corresponding to two symbols differ, preventing proper digital precoding and correct signal decoding. It effectively realizes the consistency of the virtual MIMO equivalent channel, thereby ensuring that data can be transmitted smoothly.

[0132] See Figure 5 This is a schematic diagram of a communication parameter configuration device provided in an embodiment of the present invention. The present invention also provides a communication parameter configuration device 30, applied to the base station side. The device 30 specifically includes:

[0133] The terminal capability information receiving module 31 is used to receive terminal capability information reported by the terminal; wherein, the terminal capability is related to the data receiving capability of the terminal;

[0134] The communication parameter configuration module 32 is used to configure the number of data transmission streams and the antenna characteristic switching period according to the terminal capability information and the base station capability information, so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol; wherein, the base station capability information is related to the data transmission capability of the base station, and the antenna characteristic switching period is the switching period of the antenna characteristic pattern within the duration of one OFDM symbol;

[0135] The communication parameter sending module 33 is used to send the data transmission stream number and the antenna characteristic switching period to the terminal.

[0136] It should be noted that the communication parameter configuration device 30 provided in this embodiment of the invention is used to execute all the process steps of the communication parameter configuration method applied to the base station side in the above embodiment. The working principle and beneficial effect of the two are one-to-one, so they will not be described again.

[0137] See Figure 6 This is a schematic diagram of another communication parameter configuration device provided in an embodiment of the present invention. The present invention also provides another communication parameter configuration device 40, applied to the terminal side. The device 40 specifically includes:

[0138] The terminal capability information reporting module 41 is used to report terminal capability information to the base station, so that the base station configures the number of data transmission streams and the antenna characteristic switching period according to the terminal capability information and the base station capability information, and aligns the antenna characteristic switching period with the duration of the OFDM symbol; wherein, the terminal capability is related to the data receiving capability of the terminal, the base station capability information is related to the data transmitting capability of the base station, and the antenna characteristic switching period is the switching period of the antenna characteristic pattern within the duration of one OFDM symbol;

[0139] The communication parameter receiving module 42 is used to receive the data transmission stream number and the antenna characteristic switching period sent by the base station.

[0140] It should be noted that the communication parameter configuration device 40 provided in the embodiments of the present invention is used to execute all the process steps of the communication parameter configuration method applied to the terminal side in the above embodiments. The working principle and beneficial effect of the two are one-to-one, so they will not be described again.

[0141] This invention also provides a communication parameter configuration device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the communication parameter configuration method as described in any of the above embodiments.

[0142] It should be noted that the communication parameter configuration device provided in this embodiment of the invention is used to execute all the process steps of the communication parameter configuration method in the above embodiment. The working principle and beneficial effects of the two are one-to-one, so they will not be described again.

[0143] This invention also provides a computer-readable storage medium, which includes a stored computer program, wherein the computer program, when running, controls the device where the computer-readable storage medium is located to execute the communication parameter configuration method as described in any of the above embodiments.

[0144] This invention also provides a computer program product, which includes a computer program or computer instructions. When the computer program or computer instructions are executed by a processor, they implement the communication parameter configuration method as described in any of the above embodiments.

[0145] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0146] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for configuring communication parameters, characterized in that, Applied to the base station side, the method includes: The terminal capability information reported by the receiving terminal is received; wherein the terminal capability is related to the data receiving capability of the terminal. Based on the terminal capability information and base station capability information, configure the number of data transmission streams and the antenna characteristic switching period so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol; wherein, the base station capability information is related to the data transmission capability of the base station, and the antenna characteristic switching period is the switching period of the antenna characteristic pattern within the duration of one OFDM symbol; The data transmission stream count and the antenna characteristic switching cycle are sent to the terminal.

2. The communication parameter configuration method as described in claim 1, characterized in that, The terminal capability information includes the number of receiving radio frequency channels and the number of antenna elements connected to each receiving radio frequency channel; the base station capability information includes the number of transmitting radio frequency channels.

3. The communication parameter configuration method as described in claim 2, characterized in that, The step of configuring the data transmission stream number and antenna characteristic switching period based on the terminal capability information and base station capability information, so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol, includes: The number of data transmission streams is determined based on the number of receiving radio frequency channels, the number of antenna elements connected to each receiving radio frequency channel, and the number of transmitting radio frequency channels; Based on the number of data transmission streams, determine the channel expansion factor of the receiving radio frequency channel; The antenna characteristic switching period is determined based on the channel spread factor, such that the product of the antenna characteristic switching period and the channel spread factor satisfies the common divisor of the duration of the effective data of the OFDM symbol and the duration of the cyclic prefix.

4. The communication parameter configuration method as described in claim 3, characterized in that, The terminal capability information also includes the upper limit of antenna characteristic switching speed; The step of configuring the number of data transmission streams and the antenna characteristic switching period based on the terminal capability information and the base station capability information, so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol, further includes: The antenna characteristic switching period is determined based on the upper limit of the antenna characteristic switching speed, so that the antenna characteristic switching period is greater than or equal to the upper limit of the antenna characteristic switching speed.

5. The communication parameter configuration method as described in claim 3, characterized in that, The number of data transmission streams is less than or equal to the minimum of the number of transmitting RF channels and the total number of antenna elements connected to the receiving RF channels, and the number of data transmission streams is an integer multiple of the number of receiving RF channels.

6. The communication parameter configuration method as described in claim 4, characterized in that, Receiving the upper limit of antenna characteristic switching speed reported by the terminal includes: The terminal reports the hardware capability requirements of the antenna characteristic switching device; wherein the hardware capability requirements are related to the antenna characteristic switching speed.

7. A method for configuring communication parameters, characterized in that, Applied to the terminal side, the method includes: The terminal capability information is reported to the base station so that the base station can configure the number of data transmission streams and the antenna characteristic switching period according to the terminal capability information and the base station capability information, so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol; wherein, the terminal capability is related to the data receiving capability of the terminal, the base station capability information is related to the data transmitting capability of the base station, and the antenna characteristic switching period is the switching period of the antenna characteristic pattern within the duration of one OFDM symbol; Receive the data transmission stream number and the antenna characteristic switching period sent by the base station.

8. The communication parameter configuration method as described in claim 7, characterized in that, The method further includes: The channel expansion factor of the receiving radio frequency channel is determined based on the number of data transmission streams. Based on the channel expansion factor and the antenna characteristic switching period, different antenna characteristic patterns are switched and upsampled to create a virtual receiving radio frequency channel.

9. A communication parameter configuration device, characterized in that, Applied to the base station side, the device includes: A terminal capability information receiving module is used to receive terminal capability information reported by the terminal; wherein, the terminal capability is related to the terminal's data receiving capability; The communication parameter configuration module is used to configure the number of data transmission streams and the antenna characteristic switching period according to the terminal capability information and the base station capability information, so that the antenna characteristic switching period is aligned with the duration of the OFDM symbol; wherein, the base station capability information is related to the data transmission capability of the base station, and the antenna characteristic switching period is the switching period of the antenna characteristic pattern within the duration of one OFDM symbol; The communication parameter sending module is used to send the data transmission stream number and the antenna characteristic switching period to the terminal.

10. A communication parameter configuration device, characterized in that, Applied to the terminal side, the device includes: The terminal capability information reporting module is used to report terminal capability information to the base station, so that the base station can configure the number of data transmission streams and the antenna characteristic switching period according to the terminal capability information and the base station capability information, and make the antenna characteristic switching period aligned with the duration of the OFDM symbol; wherein, the terminal capability is related to the data receiving capability of the terminal, the base station capability information is related to the data transmitting capability of the base station, and the antenna characteristic switching period is the switching period of the antenna characteristic pattern within the duration of one OFDM symbol; The communication parameter receiving module is used to receive the data transmission stream number and the antenna characteristic switching period sent by the base station.

11. A communication parameter configuration device, characterized in that, It includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor, when executing the computer program, implements the communication parameter configuration method as described in any one of claims 1 to 8.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored computer program, wherein, when the computer program is executed, it controls the device on which the computer-readable storage medium is located to perform the communication parameter configuration method as described in any one of claims 1 to 8.

13. A computer program product, characterized in that, The computer program product includes a computer program or computer instructions, which, when executed by a processor, implement the communication parameter configuration method as described in any one of claims 1 to 8.

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