A method, chip, and terminal for receiving NR SIB messages.

Abstract

The application provides a terminal receiving NR SIB message method, a chip and a terminal, and the terminal supports a first antenna receiving scheme, a second antenna receiving scheme,..., and an mth antenna receiving scheme with an increasing number of antennas. The method comprises: dynamically adjusting the number of antennas for receiving the NR SIB message sent by the base station according to the wireless channel quality between the base station and the terminal; wherein the better the wireless channel quality, the fewer the number of antennas for receiving the NR SIB message sent by the base station; the worse the wireless channel quality, the more the number of antennas for receiving the NR SIB message sent by the base station; and receiving the NR SIB message sent by the base station by using the antenna receiving scheme corresponding to the dynamically adjusted number of antennas. By dynamically adjusting the number of antennas for receiving the NR SIB message by the terminal, the power consumption and the demodulation success rate are considered to achieve a better comprehensive performance between the power consumption and the SIB message demodulation success rate.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a method, chip, and terminal for a terminal to receive NR SIB messages. Background Technology

[0002] Currently, in the process of a terminal receiving 5G NR SIB messages transmitted from a base station, the terminal uses a fixed number of antennas to receive these messages. For example, there is a fixed single-antenna scheme for receiving 5G NR SIB messages. Although this scheme has low power consumption, it cannot cope with situations where the PDSCH channel quality between the base station and the terminal is poor. Another example is a fixed four-antenna scheme for receiving 5G NR SIB messages. While this scheme provides diversity gain that can address situations where the PDSCH channel quality between the base station and the terminal is poor, its power consumption is relatively high. Summary of the Invention

[0003] This invention provides a method, chip, and terminal for receiving NR SIB messages, which balances power consumption and demodulation success rate to achieve a better overall performance between power consumption and NR SIB message demodulation success rate.

[0004] In a first aspect, the present invention provides a method for a terminal to receive NR SIB messages, wherein the terminal supports a first antenna reception scheme, a second antenna reception scheme, ..., an m-th antenna reception scheme with an increasing number of antennas. The method includes:

[0005] The number of antennas receiving NR SIB messages from the base station is dynamically adjusted based on the quality of the wireless channel between the base station and the terminal. Specifically, the better the wireless channel quality, the fewer antennas are needed to receive NR SIB messages from the base station; the worse the wireless channel quality, the more antennas are needed to receive NR SIB messages from the base station.

[0006] The antenna reception scheme corresponding to the dynamically adjusted number of antennas is used to receive NR SIB messages sent by the base station.

[0007] In the above scheme, the number of antennas used by the terminal to receive NR SIB messages is dynamically adjusted based on the wireless channel quality between the base station and the terminal. Specifically, different antenna counts are used to receive NR SIB messages from the base station under different wireless channel quality conditions. Higher wireless channel quality requires fewer antennas, while lower quality requires more. Compared to existing technologies that use a fixed number of antennas to receive 5G NR SIB messages, this application achieves a better overall performance by dynamically adjusting the number of antennas used by the terminal to receive NR SIB messages, balancing power consumption and demodulation success rate.

[0008] In one specific implementation, dynamically adjusting the number of antennas receiving NR SIB messages transmitted by the base station based on the wireless channel quality between the base station and the terminal includes: dynamically adjusting the number of antennas receiving NR SIB messages transmitted by the base station based on the signal-to-noise ratio (SNR) of the wireless channel between the base station and the terminal; wherein, the higher the SNR, the fewer antennas are needed to receive NR SIB messages transmitted by the base station; the lower the SNR, the more antennas are needed to receive NR SIB messages transmitted by the base station. By dynamically adjusting the number of antennas receiving NR SIB messages transmitted by the base station based on the SNR index, which reflects the wireless channel quality between the base station and the terminal, the difficulty of dynamic adjustment is simplified.

[0009] In one specific implementation, dynamically adjusting the number of antennas receiving NR SIB messages from the base station based on the signal-to-noise ratio (SNR) of the wireless channel between the base station and the terminal includes: presetting demodulation thresholds for the first to m-th antenna receiving schemes as decreasing values ​​of D1, D2, ..., Dm; if the SNR is greater than or equal to D1, dynamically adjusting the first antenna receiving scheme to receive NR SIB messages from the base station; if the SNR is less than Dm, dynamically adjusting the m-th antenna receiving scheme to receive NR SIB messages from the base station; if the SNR is greater than or equal to Di and less than Di-1, dynamically adjusting the i-th antenna receiving scheme to receive NR SIB messages from the base station; where i is an integer greater than 1 and less than m. By presetting the reception thresholds for different antenna receiving schemes, and comparing the demodulation threshold for the terminal receiving NR SIB messages with the SNR of the wireless channel, the number of antennas receiving NR SIB messages is adaptively and quantitatively adjusted with precision.

[0010] In one specific implementation, dynamically adjusting the number of antennas used to receive NR SIB messages from the base station, based on the signal-to-noise ratio (SNR) of the wireless channel between the base station and the terminal, further includes: the number of antennas used when receiving the (N+1)th NR SIB message from the base station, dynamically adjusted based on the SNR of the wireless channel and the demodulation thresholds of different antenna reception schemes when receiving the Nth NR SIB message; where N is a positive integer. By dynamically adjusting the number of antennas based on the SNR of the wireless channel and the demodulation thresholds of different antenna reception schemes when receiving the previous NR SIB message, the number of antennas for receiving the next NR SIB message is determined, increasing the frequency of dynamically adjusting the number of antennas, thereby achieving a better overall performance in terms of power consumption and SIB message demodulation success rate.

[0011] In one specific implementation, dynamically adjusting the number of antennas for receiving NR SIB messages transmitted by the base station based on the signal-to-noise ratio (SNR) of the wireless channel between the base station and the terminal further includes: using a first antenna receiving scheme to receive the first NR SIB message sent by the base station to the terminal; when the first antenna receiving scheme fails to receive and demodulate the first NR SIB message sent by the base station, the terminal learns the SNR of the wireless channel when it first received the NR SIB message. For the first reception of the NR SIB message transmitted by the base station, since the terminal cannot know the quality of the wireless channel transmitting the NR SIB message, the terminal can use the first antenna receiving scheme with the fewest antennas and lower power consumption; when the first antenna receiving scheme fails to receive and demodulate the first NR SIB message sent by the base station, the terminal learns the SNR of the wireless channel when it first received the NR SIB message, which facilitates finding an adjustment basis for subsequently dynamically adjusting the number of antennas for receiving NR SIB messages.

[0012] In one specific implementation, dynamically adjusting the number of antennas receiving NR SIB messages sent by the base station based on the signal-to-noise ratio of the wireless channel between the base station and the terminal further includes: before receiving the first NR SIB message sent by the base station to the terminal, determining the number of antennas for receiving the first NR SIB message from the base station based on the signal-to-noise ratio of the wireless channel obtained when demodulating the MIB message and the demodulation threshold of different antenna receiving schemes, so as to find an adjustment basis for the number of antennas for receiving the first NR SIB message.

[0013] In one specific implementation, dynamically adjusting the number of antennas receiving NR SIB messages from the base station based on the signal-to-noise ratio (SNR) of the wireless channel between the base station and the terminal further includes: after the number of failed attempts to receive and demodulate NR SIB messages from the base station reaches P times, dynamically adjusting the reception scheme to use the m-th antenna to receive NR SIB messages from the base station. This is to account for the rapid changes and unpredictability of the wireless channel, and to avoid the scenario where the antenna reception scheme derived from the previous wireless channel SNR becomes inapplicable due to the rapid deterioration of the wireless channel during the next NR SIB message demodulation process, aiming to maximize the demodulation success rate of NR SIB messages through diversity gain.

[0014] In one specific implementation, P∈[2, SIB protection timer / SIB repetition period], to avoid SIB protection being activated due to too many demodulation failures.

[0015] In one specific implementation, dynamically adjusting the number of antennas receiving NR SIB messages from the base station based on the wireless channel quality between the base station and the terminal includes: setting a preset demodulation failure threshold; and dynamically increasing the number of antennas receiving NR SIB messages from the base station after the number of failures in receiving and demodulating NR SIB messages using the same number of antennas exceeds the demodulation failure threshold. The number of demodulation failures, which indirectly reflects the wireless channel quality, is used as the basis for dynamically adjusting the number of antennas receiving NR SIB messages.

[0016] In one specific implementation, dynamically adjusting the number of antennas receiving NR SIB messages from the base station based on the wireless channel quality between the base station and the terminal includes: setting a preset demodulation block error rate threshold; and dynamically increasing the number of antennas receiving NR SIB messages from the base station if the demodulation block error rate of the previous reception and demodulation of NR SIB messages with a certain number of antennas exceeds the demodulation block error rate threshold. The number of antennas receiving NR SIB messages is dynamically adjusted based on the demodulation block error rate, which indirectly reflects the wireless channel quality.

[0017] Secondly, the present invention also provides a chip applied to a terminal, the terminal supporting a first antenna receiving scheme, a second antenna receiving scheme, ..., an m-th antenna receiving scheme with an increasing number of antennas. The chip dynamically adjusts the number of antennas used by the terminal to receive NR SIB messages sent by the base station based on the quality of the wireless channel between the base station and the terminal, so that the terminal uses the antenna receiving scheme corresponding to the dynamically adjusted number of antennas to receive the NR SIB messages sent by the base station. Specifically, the better the wireless channel quality, the fewer antennas are needed to receive NR SIB messages sent by the base station; conversely, the worse the wireless channel quality, the more antennas are needed.

[0018] In the above scheme, the number of antennas used by the terminal to receive NR SIB messages is dynamically adjusted by a chip built into the terminal based on the wireless channel quality between the base station and the terminal. That is, different antenna numbers are used to receive NR SIB messages sent by the base station under different wireless channel quality conditions. Specifically, the better the wireless channel quality, the fewer antennas are used to receive NR SIB messages; the worse the wireless channel quality, the more antennas are used. Compared to existing technologies that use a fixed number of antennas to receive 5G NR SIB messages, this application can achieve a better overall performance in terms of power consumption and SIB message demodulation success rate by dynamically adjusting the number of antennas used by the terminal to receive NR SIB messages, balancing power consumption and demodulation success rate.

[0019] Thirdly, the present invention also provides a terminal, which includes an antenna module supporting a first antenna receiving scheme, a second antenna receiving scheme, ..., an m-th antenna receiving scheme with an increasing number of antennas. The terminal also includes any of the aforementioned chips that are communicatively connected to the antenna module.

[0020] In the above scheme, the chip built into the terminal dynamically adjusts the number of antennas in the terminal's antenna module to receive NR SIB messages based on the wireless channel quality between the base station and the terminal. That is, under different wireless channel quality conditions, a different number of antennas are used to receive NR SIB messages sent by the base station. Specifically, the better the wireless channel quality, the fewer antennas are used to receive NR SIB messages; the worse the wireless channel quality, the more antennas are used. Compared to existing technologies that use a fixed number of antennas to receive 5G NR SIB messages, this application can achieve a better overall performance in terms of power consumption and SIB message demodulation success rate by dynamically adjusting the number of antennas in the terminal to receive NR SIB messages, balancing power consumption and demodulation success rate. Attached Figure Description

[0021] Figure 1 A flowchart illustrating a method for a terminal to receive NR SIB messages, provided in an embodiment of the present invention;

[0022] Figure 2 A flowchart illustrating another method for a terminal to receive NR SIB messages provided in an embodiment of the present invention;

[0023] Figure 3 A flowchart illustrating another method for a terminal to receive NR SIB messages provided in an embodiment of the present invention;

[0024] Figure 4The figure shows the simulation results of the PDSCH demodulation threshold for single-antenna reception of NR SIB messages provided in the embodiments of the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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.

[0026] To facilitate understanding of the method for a terminal to receive NR SIB messages provided in this embodiment of the invention, the application scenario of this method is first described below. This method is applied to a terminal, specifically a mobile phone, computer, etc. The terminal supports a first antenna receiving scheme, a second antenna receiving scheme, ..., an m-th antenna receiving scheme with increasing antenna count, to receive NR SIB messages sent from the base station. The method for receiving NR SIB messages will now be described in detail with reference to the accompanying drawings.

[0027] refer to Figure 1 The method for a terminal to receive NR SIB messages provided in this embodiment of the invention includes:

[0028] S10: Dynamically adjust the number of antennas receiving NR SIB messages sent by the base station based on the quality of the wireless channel between the base station and the terminal; where the better the wireless channel quality, the fewer antennas are needed to receive NR SIB messages sent by the base station; the worse the wireless channel quality, the more antennas are needed to receive NR SIB messages sent by the base station.

[0029] S20: Receive NR SIB messages sent by the base station using the antenna reception scheme corresponding to the dynamically adjusted number of antennas.

[0030] In the above scheme, the number of antennas used by the terminal to receive NR SIB messages is dynamically adjusted based on the wireless channel quality between the base station and the terminal. Specifically, under different wireless channel quality conditions, a different number of antennas is used to receive NR SIB messages sent by the base station. Higher wireless channel quality requires fewer antennas, while lower quality requires more. Compared to existing technologies that use a fixed number of antennas to receive 5G NR SIB messages, this application achieves a better overall performance by dynamically adjusting the number of antennas used by the terminal to receive NR SIB messages, balancing power consumption and demodulation success rate. The following detailed description of each step, in conjunction with the accompanying drawings, further illustrates this approach.

[0031] It should be explained that the aforementioned base station can be a base station of type such as, but not limited to, 5G base stations, and the NR SIB message received by the terminal from the base station can specifically be as follows: Figure 2 and Figure 3 ( Figure 2 and Figure 3 In this context, UE represents the terminal. Figure 2 and Figure 3 The PDSCH transmission channel in the diagram represents the wireless channel between the base station and the terminal. Figure 2 and Figure 3 The SNR in the diagram represents the signal-to-noise ratio (SNR), and the NR SIB message can be of any type. When implementing a terminal that supports an increasing number of antennas (first antenna, second antenna, ..., m-th antenna), the terminal can support single-antenna, dual-antenna, and four-antenna reception schemes. Specifically, in this case, m = 3, where the first antenna reception scheme is a single-antenna scheme, the second antenna reception scheme is a dual-antenna scheme, and the third antenna reception scheme is a four-antenna scheme. It should be understood that the terminal's support for multiple antenna reception schemes is not limited to the methods shown above; other support methods can also be used. For example, m = 2, in which case the terminal can specifically support only single-antenna and dual-antenna reception schemes, i.e., the first antenna reception scheme is a single-antenna scheme, and the second antenna reception scheme is a dual-antenna scheme. Alternatively, the terminal can support only dual-antenna and four-antenna reception schemes, i.e., the first antenna reception scheme is a dual-antenna scheme, and the second antenna reception scheme is a four-antenna scheme. Alternatively, the terminal may support only a single-antenna reception scheme and a four-antenna reception scheme, that is, the first antenna reception scheme is a single-antenna reception scheme, and the second antenna reception scheme is a four-antenna reception scheme.

[0032] refer to Figure 1First, the number of antennas receiving NRSIB messages from the base station is dynamically adjusted based on the quality of the wireless channel between the base station and the terminal. Specifically, the better the wireless channel quality, the fewer antennas are used to receive NRSIB messages; conversely, the worse the wireless channel quality, the more antennas are used. After dynamic adjustment, the antenna reception scheme corresponding to the dynamically adjusted number of antennas is used to receive NRSIB messages from the base station. This involves dynamically adjusting the number of antennas used by the terminal to receive NRSIB messages based on the quality of the wireless channel between the base station and the terminal. In other words, different antenna reception schemes with different numbers of antennas are used to receive NRSIB messages from the base station under different wireless channel quality conditions; specifically, the better the wireless channel quality, the fewer antennas are used to receive NRSIB messages, and the worse the wireless channel quality, the more antennas are used. Compared to existing technologies that use a fixed number of antennas to receive 5G NR SIB messages, this application can dynamically adjust the number of antennas used by the terminal to receive NR SIB messages, balancing power consumption and demodulation success rate, to achieve a better overall performance in terms of power consumption and SIB message demodulation success rate.

[0033] When dynamically adjusting the number of antennas receiving NR SIB messages from the base station based on the specific wireless channel quality between the base station and the terminal, refer to... Figure 2 The number of antennas receiving NR SIB messages from the base station can be dynamically adjusted based on the signal-to-noise ratio (SNR) of the wireless channel between the base station and the terminal. Specifically, the higher the SNR of the wireless channel between the base station and the terminal, the fewer antennas are needed to receive NR SIB messages; conversely, the lower the SNR, the more antennas are needed. By dynamically adjusting the number of antennas receiving NR SIB messages based on the SNR indicator, which reflects the quality of the wireless channel between the base station and the terminal, the complexity of dynamic adjustment is simplified.

[0034] When dynamically adjusting the number of antennas receiving NRSIB messages from the base station based on the signal-to-noise ratio of the wireless channel between the base station and the terminal, refer to... Figure 2The demodulation thresholds for the first to m-th antenna receiving schemes can be preset as decreasing values ​​D1, D2, ..., Dm, respectively. If the signal-to-noise ratio (SNR) is greater than or equal to D1, the first antenna receiving scheme is dynamically adjusted to receive NR SIB messages sent by the base station. If the SNR is less than Dm, the m-th antenna receiving scheme is dynamically adjusted to receive NR SIB messages sent by the base station. If the SNR is greater than or equal to Di and less than Di-1, the i-th antenna receiving scheme is dynamically adjusted to receive NR SIB messages sent by the base station. Here, i is an integer greater than 1 and less than m. By preset the receiving thresholds for different antenna receiving schemes, and comparing the demodulation threshold for the terminal to receive NR SIB messages with the SNR of the wireless channel, the number of antennas receiving NR SIB messages is adaptively and quantitatively adjusted with precision.

[0035] For example, when m=3, the first antenna receiving scheme is a single-antenna receiving scheme, the second antenna receiving scheme is a dual-antenna receiving scheme, and the third antenna receiving scheme is a four-antenna receiving scheme. The demodulation thresholds for the first to third antenna receiving schemes can be preset to decrease sequentially as D1, D2, and D3, respectively. (Reference) Figure 2 and Figure 3 The 5G base station sends NR SIB messages to the terminal through the PDSCH channel, using QPSK modulation, and the MCS value is [0, 9]. Based on the analysis of a large amount of real-world test data, this application classifies the MCS used by different equipment vendors into three main tiers, as shown in Table 1 below.

[0036] Table 1 - MCS values ​​for NRSIB messages sent by 5G base stations from different equipment vendors

[0037] gear MCS value 1st gear 0 or 1 2nd gear 4 or 5 3rd gear 9

[0038] When setting the demodulation thresholds for the first to third antenna reception schemes, this application, in one preset mode, takes the terminal's ability to cope with the most severe wireless environment as the starting point, selects MCS=9 for algorithm simulation, and obtains the PDSCH demodulation thresholds for single-antenna, dual-antenna, and four-antenna reception of NR SIB messages for the XX chip as shown in Table 2 below.

[0039] Table 2 - PDSCH demodulation thresholds for receiving NR SIB messages with MCS=9, for chip with single, dual, and quad antennas.

[0040]

[0041] As shown in Table 2 above, the preset demodulation thresholds for the first to third antenna receiving schemes are: D1 = -2dB, D2 = -5dB, and D3 = -8dB, respectively. The above algorithm simulation determines the approximate demodulation thresholds by simulating a typical configuration of DCI 1-0 scheduling SIB information. The main configuration is: 1 layer, 24RBs, 64QAM table, symb 2-12, 3 dmrs, dmrstype1, MCS = 9. Taking single-antenna reception as an example, the simulation results are as follows. Figure 4 As shown. According to the 3GPP protocol, the default retransmission period for NRSIB messages is 20ms, but the actual retransmission time depends on the network implementation. For SSB and CORESET multiplexing pattern 1, the SIB retransmission period is 20ms; for SSB and CORESET multiplexing patterns 2 / 3, the SIB retransmission period is the same as the SSB period. From the above description, it can be seen that the terminal has multiple opportunities to demodulate NRSIB messages. It should be understood that the preset demodulation thresholds for the first to m-th antenna reception schemes, which are decreasing D1, D2, ..., Dm respectively, are not limited to the methods shown above; other preset methods can also be used.

[0042] After setting the demodulation thresholds for the first to m-th antenna reception schemes, the number of antennas used by the terminal to receive NR SIB messages from the base station can be dynamically adjusted according to the preset demodulation thresholds for each antenna reception scheme and the signal-to-noise ratio (SNR) of the wireless channel between the base station and the terminal. When the base station first sends an NR SIB message to the terminal, specifically during the process of dynamically adjusting the number of antennas to receive the NR SIB message based on the SNR of the wireless channel between the base station and the terminal, the first antenna reception scheme with the fewest antennas can be used initially to receive the first NR SIB message sent by the base station. If the first antenna reception scheme fails to receive and demodulate the first NR SIB message sent by the base station, the terminal can obtain the SNR of the wireless channel when it first received the NR SIB message. For the first reception of the NR SIB message transmitted by the base station, since the terminal cannot know the quality of the wireless channel transmitting the NR SIB message, the terminal can use the first antenna reception scheme with the fewest antennas and the lowest power consumption. When the first antenna reception scheme fails to receive and demodulate the first NR SIB message sent by the base station, the terminal can obtain the signal-to-noise ratio of the wireless channel when the NR SIB message was first received by the base station, which is convenient for finding the adjustment basis for dynamically adjusting the number of antennas to receive NR SIB messages in the future.

[0043] For example, when m=3, the first antenna reception scheme is a single-antenna reception scheme, the second antenna reception scheme is a dual-antenna reception scheme, and the third antenna reception scheme is a four-antenna reception scheme. For the first demodulation of the NR SIB message, since the terminal cannot know the PDSCH channel quality transmitting the SIB message, the terminal can use a single-antenna reception scheme. If the first demodulation of the NR SIB message fails, the terminal can know the signal-to-noise ratio of the PDSCH transmission channel corresponding to the antenna, and then compare it with the preset demodulation threshold of different receiving antenna reception schemes to determine the number of antennas for the terminal to receive the NR SIB message sent by the base station for the second time. Specifically, the method for determining the number of antennas for receiving the NR SIB message sent by the base station for the second time can be as follows:

[0044] A. When the signal-to-noise ratio of the PDSCH transmission channel is greater than or equal to the demodulation threshold D1 corresponding to the single-antenna reception scheme, the terminal can maintain the single-antenna reception scheme to receive the second NR SIB message.

[0045] B. When the demodulation threshold D1 of the single-antenna reception scheme is greater than the signal-to-noise ratio of the PDSCH transmission channel and is greater than or equal to the demodulation threshold D2 of the dual-antenna reception scheme, the terminal adjusts to the dual-antenna reception scheme to receive the second NR SIB message.

[0046] C. When the signal-to-noise ratio of the PDSCH transmission channel is less than the demodulation threshold D2 of the dual-antenna reception, the terminal adjusts to a four-antenna reception scheme to receive the second NR SIB message.

[0047] It should be understood that when the base station sends the NR SIB message to the terminal for the first time, other methods can also be used to dynamically adjust the number of antennas on the terminal to receive the NR SIB message sent by the base station for the first time. For example, refer to... Figure 3 In the process of dynamically adjusting the number of antennas receiving NR SIB messages sent by the base station based on the signal-to-noise ratio of the wireless channel between the base station and the terminal, before receiving the first NR SIB message sent by the base station to the terminal, the number of antennas for receiving the first NR SIB message can be determined based on the signal-to-noise ratio of the wireless channel obtained when demodulating the MIB message and the demodulation threshold of different antenna receiving schemes. This makes it easier to find an adjustment basis for the number of antennas for receiving the first NR SIB message.

[0048] For example, when m=3, the first antenna reception scheme is a single-antenna reception scheme, the second antenna reception scheme is a dual-antenna reception scheme, and the third antenna reception scheme is a four-antenna reception scheme. Compared to the above scheme where the first antenna reception scheme is used by default to receive the NR SIB message when the base station first sends it to the terminal, refer to... Figure 3The difference in this scheme lies in the fact that, during the first demodulation of the NR SIB message, the terminal determines the number of antennas to use for the first reception of the NR SIB message based on the PBCH channel quality obtained during the demodulation of the MIB message. Specifically, the method for determining the number of antennas to receive the NR SIB message sent by the base station for the first time can be as follows:

[0049] A. When the signal-to-noise ratio of the PDSCH transmission channel is greater than or equal to the demodulation threshold D1 corresponding to the single-antenna reception scheme, the terminal can maintain the single-antenna reception scheme to receive the first NR SIB message.

[0050] B. When the demodulation threshold D1 of the single-antenna reception scheme is greater than the signal-to-noise ratio of the PDSCH transmission channel and is greater than or equal to the demodulation threshold D2 of the dual-antenna reception scheme, the terminal adjusts to the dual-antenna reception scheme to receive the first NR SIB message.

[0051] C. When the signal-to-noise ratio of the PDSCH transmission channel is less than the demodulation threshold D2 of the dual-antenna reception, the terminal adjusts to a four-antenna reception scheme to receive the first NR SIB message.

[0052] Furthermore, the two methods described above for receiving the first NR SIB message from the base station can be combined. Specifically, based on the signal-to-noise ratio (SNR) of the wireless channel obtained during MIB message demodulation and the demodulation thresholds for different antenna reception schemes, the number of antennas required to receive the first NR SIB message from the base station is determined. After receiving and demodulating the NR SIB message from the base station for the first time based on the determined number of antennas, if the first demodulation of the NR SIB message fails, the terminal can obtain the SNR of the PDSCH transmission channel corresponding to the antenna and compare it with the preset PDSCH demodulation threshold for receiving the SIB message to determine the number of antennas required to receive the second NR SIB message from the base station:

[0053] A. When the signal-to-noise ratio of the PDSCH transmission channel is greater than or equal to the demodulation threshold D1 corresponding to the single-antenna reception scheme, the terminal can maintain the single-antenna reception scheme to receive the second NR SIB message.

[0054] B. When the demodulation threshold D1 of the single-antenna reception scheme is greater than the signal-to-noise ratio of the PDSCH transmission channel and is greater than or equal to the demodulation threshold D2 of the dual-antenna reception scheme, the terminal adjusts to the dual-antenna reception scheme to receive the second NR SIB message.

[0055] C. When the signal-to-noise ratio of the PDSCH transmission channel is less than the demodulation threshold D2 of the dual-antenna reception, the terminal adjusts to a four-antenna reception scheme to receive the second NR SIB message.

[0056] In addition, during the process of dynamically adjusting the number of antennas receiving NRSIB messages from the base station based on the signal-to-noise ratio of the wireless channel between the base station and the terminal, reference is made to... Figure 2 and Figure 3 Similarly, the number of antennas used when receiving the N+1th NRSIB message from the base station can be dynamically adjusted based on the signal-to-noise ratio of the wireless channel and the demodulation threshold of different antenna reception schemes when receiving the Nth Nth NRSIB message; where N is a positive integer. By dynamically adjusting the number of antennas based on the signal-to-noise ratio of the wireless channel and the demodulation threshold of different antenna reception schemes during the previous NRSIB message reception, the number of antennas for the subsequent NRSIB message reception is determined. This increases the frequency of dynamically adjusting the number of antennas, thereby achieving a better overall performance in terms of power consumption and SIB message demodulation success rate.

[0057] In addition, during the process of dynamically adjusting the number of antennas receiving NRSIB messages from the base station based on the signal-to-noise ratio of the wireless channel between the base station and the terminal, reference is made to... Figure 2 and Figure 3 After the number of failures to receive and demodulate NR SIB messages sent by the base station reaches P times, a fixed m-th antenna reception scheme can be dynamically adjusted to receive NR SIB messages sent by the base station. This is to account for the rapid changes and unpredictability of the wireless channel, and to avoid the scenario where the antenna reception scheme derived from the previous wireless channel signal-to-noise ratio becomes inapplicable due to the rapid deterioration of the wireless channel during the next NR SIB message demodulation. The aforementioned P∈[2, SIB protection timer / SIB repetition period], that is, the value range of P is an integer between 2 and the SIB protection timer / SIB repetition period, i.e., N is limited to a positive integer not greater than P, to avoid triggering SIB protection due to excessive demodulation failures.

[0058] For example, refer to Figure 2 and Figure 3 When m=3, the first antenna receiving scheme is a single-antenna receiving scheme, the second antenna receiving scheme is a dual-antenna receiving scheme, and the third antenna receiving scheme is a four-antenna receiving scheme. Considering the rapid changes and unpredictability of the wireless channel, in order to avoid the antenna receiving scheme derived from the signal-to-noise ratio of the previous PDSCH transmission channel becoming inapplicable in the next NR SIB message demodulation process due to the rapid deterioration of the wireless channel, when the number of NR SIB message demodulation failures increases to the Pth time, the terminal will always use the four-antenna receiving scheme in order to maximize the demodulation success rate of NR SIB messages through diversity gain.

[0059] It is important to note that the adjustment basis for dynamically adjusting the terminal's reception of NR SIB messages sent by the base station is not limited to the signal-to-noise ratio of the wireless channel shown above. Other methods can also be used. For example, the number of demodulation failures, which indirectly reflects the quality of the wireless channel, can be used as the adjustment basis. Specifically, in the process of dynamically adjusting the number of antennas receiving NR SIB messages from the base station based on the quality of the wireless channel between the base station and the terminal, a demodulation failure threshold can be preset. If the number of failures in receiving and demodulating NR SIB messages from the base station using the same number of antennas exceeds the demodulation failure threshold, the number of antennas receiving NR SIB messages from the base station is dynamically increased. The number of antennas receiving NR SIB messages is dynamically adjusted by using the number of demodulation failures, which indirectly reflects the quality of the wireless channel, as the adjustment basis. For example, the preset demodulation failure threshold can be H. In the process of receiving and demodulating NR SIB messages from the base station using a single-antenna reception scheme, if the number of demodulation failures exceeds H, the reception scheme is switched to a dual-antenna reception scheme. If the number of demodulation failures exceeds H when receiving and demodulating NR SIB messages sent by the base station using a dual-antenna receiving scheme, the system will switch to a four-antenna receiving scheme to receive NR SIB messages sent by the base station.

[0060] For example, the demodulation block error rate, which indirectly reflects the quality of the wireless channel, can also be used as the adjustment basis. Specifically, in the process of dynamically adjusting the number of antennas receiving NR SIB messages sent by the base station based on the quality of the wireless channel between the base station and the terminal, a demodulation block error rate threshold can be preset. If the demodulation block error rate of the previous reception and demodulation of NR SIB messages sent by the base station using a certain number of antennas exceeds the demodulation block error rate threshold, the number of antennas receiving NR SIB messages sent by the base station is dynamically increased. The number of antennas receiving NR SIB messages is dynamically adjusted by using the demodulation block error rate, which indirectly reflects the quality of the wireless channel, as the adjustment basis. For example, the preset demodulation block error rate can be 10% (of course, this value is adjustable). In the process of receiving and demodulating NR SIB messages sent by the base station using a single-antenna reception scheme, if the demodulation block error rate is greater than 10%, the reception scheme is switched to a dual-antenna reception scheme to receive NR SIB messages sent by the base station. If the demodulation block error rate is greater than 10% when receiving and demodulating NR SIB messages sent by the base station using a dual-antenna receiving scheme, the system will switch to a four-antenna receiving scheme to receive NR SIB messages sent by the base station.

[0061] In the various embodiments described above, the number of antennas used by the terminal to receive NR SIB messages is dynamically adjusted based on the wireless channel quality of the wireless environment between the base station and the terminal. That is, under different wireless channel quality conditions, a different number of antennas is used to receive NR SIB messages sent by the base station. Specifically, the better the wireless channel quality, the fewer antennas are used to receive NR SIB messages; conversely, the worse the wireless channel quality, the more antennas are used. Compared to the existing technology that uses a fixed number of antennas to receive 5G NR SIB messages, this application can achieve a better overall performance in terms of power consumption and SIB message demodulation success rate by dynamically adjusting the number of antennas used by the terminal to receive NR SIB messages, thus balancing power consumption and demodulation success rate.

[0062] In addition, this invention also provides a chip applied to a terminal, specifically a 5G chip or a 5G chip module. The terminal supports a first antenna receiving scheme, a second antenna receiving scheme, ..., an m-th antenna receiving scheme with increasing antenna numbers. The chip dynamically adjusts the number of antennas used by the terminal to receive NR SIB messages sent by the base station based on the wireless channel quality between the base station and the terminal, so that the terminal uses the antenna receiving scheme corresponding to the dynamically adjusted number of antennas to receive the NR SIB messages sent by the base station. Specifically, the better the wireless channel quality, the fewer antennas are used to receive NR SIB messages; the worse the wireless channel quality, the more antennas are used. The chip built into the terminal dynamically adjusts the number of antennas used by the terminal to receive NR SIB messages based on the wireless channel quality between the base station and the terminal. That is, under different wireless channel quality conditions, different antenna number receiving schemes are used to receive NR SIB messages sent by the base station. Specifically, if the wireless channel quality is better, the fewer antennas are used to receive NR SIB messages; if the wireless channel quality is worse, the more antennas are used. Compared to existing technologies that use a fixed number of antennas to receive 5G NR SIB messages, this application can dynamically adjust the number of antennas used by the terminal to receive NR SIB messages, balancing power consumption and demodulation success rate, to achieve a better overall performance in terms of power consumption and SIB message demodulation success rate.

[0063] It should be noted that when the chip dynamically adjusts the number of antennas for receiving NR SIB messages from the base station based on the wireless channel quality between the base station and the terminal, it can use any of the methods shown in the section on methods for receiving NR SIB messages. The specific dynamic adjustment methods will not be elaborated here.

[0064] Furthermore, this invention also provides a terminal, which includes an antenna module supporting a first antenna receiving scheme, a second antenna receiving scheme, ..., an m-th antenna receiving scheme with an increasing number of antennas. The terminal also includes any of the aforementioned chips that are communicatively connected to the antenna module. The chip built into the terminal dynamically adjusts the number of antennas in the antenna module that receive NR SIB messages based on the wireless channel quality between the base station and the terminal. That is, under different wireless channel quality conditions, different antenna numbers are used to receive NR SIB messages sent by the base station. Specifically, the better the wireless channel quality, the fewer antennas are used to receive NR SIB messages; conversely, the worse the wireless channel quality, the more antennas are used. Compared to the prior art's method of receiving 5G NR SIB messages with a fixed number of antennas, this application can achieve a better overall performance in terms of power consumption and SIB message demodulation success rate by dynamically adjusting the number of antennas in the terminal to receive NR SIB messages, balancing power consumption and demodulation success rate.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for a terminal to receive NR SIB messages, wherein, The terminal supports a first antenna reception scheme, a second antenna reception scheme, ..., an m-th antenna reception scheme with an increasing number of antennas; characterized in that the method includes: Before receiving the first NR SIB message sent by the base station to the terminal, the number of antennas to receive the first NR SIB message sent by the base station is determined based on the signal-to-noise ratio of the wireless channel obtained when demodulating the MIB message and the demodulation threshold of different antenna receiving schemes. The number of antennas receiving NR SIB messages sent by the base station is dynamically adjusted based on the wireless channel quality between the base station and the terminal; wherein, the better the wireless channel quality, the fewer antennas are needed to receive NR SIB messages sent by the base station; and the worse the wireless channel quality, the more antennas are needed to receive NR SIB messages sent by the base station. The antenna receiving scheme corresponding to the dynamically adjusted number of antennas is used to receive the NR SIB message sent by the base station.

2. The method as described in claim 1, characterized in that, The step of dynamically adjusting the number of antennas receiving NR SIB messages sent by the base station based on the wireless channel quality between the base station and the terminal includes: The number of antennas receiving NR SIB messages sent by the base station is dynamically adjusted based on the signal-to-noise ratio (SNR) of the wireless channel between the base station and the terminal; wherein, the higher the SNR, the fewer antennas are needed to receive NR SIB messages sent by the base station; and the lower the SNR, the more antennas are needed to receive NR SIB messages sent by the base station.

3. The method as described in claim 2, characterized in that, The step of dynamically adjusting the number of antennas receiving NR SIB messages sent by the base station based on the signal-to-noise ratio of the wireless channel between the base station and the terminal includes: The demodulation thresholds of the first to m-th antenna receiving schemes are preset to be decreasing D1, D2, ..., Dm, respectively; If the signal-to-noise ratio is greater than or equal to D1, the first antenna receiving scheme is dynamically adjusted to receive the NR SIB message sent by the base station. If the signal-to-noise ratio is less than Dm, then the m-th antenna receiving scheme is dynamically adjusted to receive the NRSIB message sent by the base station; If the signal-to-noise ratio is greater than or equal to Di and less than Di-1, then the i-th antenna receiving scheme is dynamically adjusted to receive the NR SIB message sent by the base station; where i is an integer greater than 1 and less than m.

4. The method as described in claim 3, characterized in that, The step of dynamically adjusting the number of antennas receiving NR SIB messages sent by the base station based on the signal-to-noise ratio of the wireless channel between the base station and the terminal further includes: The number of antennas used when receiving the NR SIB message sent by the base station for the (N+1)th time is dynamically adjusted based on the signal-to-noise ratio of the wireless channel and the demodulation threshold of different antenna reception schemes when receiving the NR SIB message sent by the base station for the Nth time; where N is a positive integer.

5. The method as described in claim 4, characterized in that, The step of dynamically adjusting the number of antennas receiving NR SIB messages sent by the base station based on the signal-to-noise ratio of the wireless channel between the base station and the terminal further includes: Using the first antenna receiving scheme, the NR SIB message sent by the base station to the terminal for the first time is received; When the terminal fails to receive and demodulate the first NR SIB message sent by the base station using the first antenna receiving scheme, it learns the signal-to-noise ratio of the wireless channel when it first received the NR SIB message sent by the base station.

6. The method as described in claim 4, characterized in that, The step of dynamically adjusting the number of antennas receiving NR SIB messages sent by the base station based on the signal-to-noise ratio of the wireless channel between the base station and the terminal further includes: After the number of failures to receive and demodulate the NR SIB message sent by the base station reaches P times, the m-th antenna receiving scheme is dynamically adjusted to receive the NR SIB message sent by the base station.

7. The method as described in claim 6, characterized in that, P∈[2, SIB protection timer / SIB repetition period].

8. The method as described in claim 1, characterized in that, The step of dynamically adjusting the number of antennas receiving NR SIB messages sent by the base station based on the wireless channel quality between the base station and the terminal includes: Preset demodulation failure count threshold; After the number of failures to receive and demodulate NR SIB messages sent by the base station using the same number of antennas exceeds the demodulation failure threshold, the number of antennas for receiving NR SIB messages sent by the base station is dynamically increased.

9. The method as described in claim 1, characterized in that, The step of dynamically adjusting the number of antennas receiving NR SIB messages sent by the base station based on the wireless channel quality between the base station and the terminal includes: Preset demodulation block error rate threshold; If the demodulation block error rate of the previous reception and demodulation of NR SIB messages sent by the base station using a certain number of antennas is greater than the demodulation block error rate threshold, the number of antennas receiving NR SIB messages sent by the base station is dynamically increased.

10. A chip, applied in a terminal, the terminal supporting a first antenna receiving scheme, a second antenna receiving scheme, ..., an m-th antenna receiving scheme with an increasing number of antennas; characterized in that, The chip dynamically adjusts the number of antennas used by the terminal to receive NR SIB messages sent by the base station based on the quality of the wireless channel between the base station and the terminal, so that the terminal can use the antenna reception scheme corresponding to the dynamically adjusted number of antennas to receive NR SIB messages sent by the base station; wherein, before receiving the first NR SIB message sent by the base station to the terminal, the number of antennas for receiving the first NR SIB message sent by the base station is determined based on the signal-to-noise ratio of the wireless channel obtained when demodulating the MIB message and the demodulation threshold of different antenna reception schemes. The better the quality of the wireless channel, the fewer antennas are needed to receive the NR SIB messages sent by the base station; the worse the quality of the wireless channel, the more antennas are needed to receive the NR SIB messages sent by the base station.

11. A terminal, characterized in that, include: Antenna module, wherein the antenna module supports a first antenna receiving scheme, a second antenna receiving scheme, ..., an m-th antenna receiving scheme with an increasing number of antennas; The chip as described in claim 10 is communicatively connected to the antenna module.

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