Signal processing method

Abstract

The invention provides a signal processing method, which comprises the following steps that: a first node generates low-frequency detection signal configuration information and sends the low-frequency detection signal configuration information to a second node; if the bit sequence length of the service packet to be sent by the second node is greater than a bit sequence length threshold, sending a low-frequency detection signal to a third node according to the low-frequency detection signal configuration information; if the third node determines that the intensity of the received low-frequency detection signal is greater than the first receiving intensity value, sending the sending beam description information used by the high-frequency communication to the second node, and sending the related information of the low-frequency detection signal to the first node; if the third node determines that the intensity of the received low-frequency detection signal is smaller than or equal to the first receiving intensity value, sending the sending beam description information used for high-frequency communication and the related information of the low-frequency detection signal to the first node; the second node determines a sending beam and sends a service packet bit sequence; a first node receives a service packet bit sequence.

Description

Technical Field

[0001] The present invention relates to the field of mobile communications, and in particular to a signal processing method. Background Art

[0002] 5G will meet people's diverse business needs in various areas such as living, working, leisure and transportation. Even in densely populated residential areas, offices, stadiums, open-air gatherings, subways, expressways, high-speed railways and wide-area coverage with ultra-high traffic density, ultra-high connection density and ultra-high mobility, it can provide users with the ultimate business experience of ultra-high-definition video, virtual reality, augmented reality, cloud desktop, online games, etc. At the same time, 5G will also penetrate into the Internet of Things and various industries, deeply integrate with industrial facilities, medical equipment, transportation, etc., effectively meet the diversified business needs of vertical industries such as industry, medical care, transportation, and realize the true "Internet of Everything".

[0003] 5G application scenarios can be divided into two categories, namely Mobile Broadband (MBB) and Internet of Things (IoT). Among them, the main technical requirements for mobile broadband access are high capacity and high data rate to meet the growing demand for data services. The Internet of Things is mainly driven by the demand for machine type communication (MTC), which can be further divided into two types, including low-rate massive machine communication (MMC) and low-latency and high-reliability machine communication. Among them, for low-rate massive machine communication, massive nodes access at a low rate, the transmitted data packets are usually small, the interval time will be relatively long, and the cost and power consumption of such nodes will usually be low; for low-latency and high-reliability machine communication, it is mainly aimed at machine communication with relatively high real-time and reliability requirements, such as real-time alarms, real-time monitoring, etc.

[0004] In the fifth generation and future mobile communication systems, efficient signal processing methods are an important means to achieve high and low frequency communications and urgently need in-depth research. Summary of the invention

[0005] Aiming at the problem of inflexible use of high and low frequencies in current mobile communication networks, an intelligent signal processing method is proposed.

[0006] The present application provides a signal processing method, the method comprising:

[0007] Step 1: The first node generates low-frequency detection signal configuration information, and the first node sends the low-frequency detection signal configuration information to the second node, wherein the low-frequency detection signal configuration information at least includes the starting transmission power of the second node, the transmission power adjustment step, the resources used to send the low-frequency detection signal, the sequence set used to send the low-frequency detection signal, and the bit sequence length threshold required for sending the low-frequency detection signal, wherein the second node supports both low-frequency communication and high-frequency communication;

[0008] Step 2: The second node receives the low-frequency reference signal configuration information from the first node. If the bit sequence length of the service packet to be sent by the second node is greater than the bit sequence length threshold, the second node sends a low-frequency detection signal to a third node according to the low-frequency detection signal configuration information, wherein the third node supports both low-frequency communication and high-frequency communication and has performed high-frequency communication with the first node within t milliseconds, t>0;

[0009] Step 3: After the third node receives the low-frequency detection signal, if the third node determines that the strength of the received low-frequency detection signal is greater than the first receiving strength value, the third node sends the transmission beam description information used by the third node and the first node for high-frequency communication to the second node, and sends the relevant information of the low-frequency detection signal to the first node, and the first node determines the receiving beam for receiving the service packet bit sequence sent by the second node according to the relevant information of the low-frequency detection signal;

[0010] If the third node determines that the strength of the received low-frequency detection signal is less than or equal to the first receiving strength value, the third node sends the transmission beam description information used by the third node to perform high-frequency communication with the first node and the related information of the low-frequency detection signal to the first node, the first node determines the receiving beam used to receive the service packet bit sequence sent by the second node according to the related information of the low-frequency detection signal, and the first node sends the transmission beam description information used by the third node to perform high-frequency communication with the first node to the second node;

[0011] Step 4: the second node determines a transmission beam according to the transmission beam description information used by the third node and the first node for high-frequency communication, and uses the transmission beam to send the service packet bit sequence through high-frequency communication;

[0012] Step 5: The first node receives the service packet bit sequence through a receiving beam.

[0013] In combination with the first aspect, in a possible implementation, the method also includes: if after the second node sends the low-frequency detection signal, within a set time threshold, it does not receive the transmission beam description information sent by the first node or the third node for high-frequency communication between the first node and the third node, the second node sends the low-frequency detection signal again, wherein the transmission power of the second node is the starting transmission power plus the transmission power adjustment step.

[0014] In combination with the first aspect, in a possible implementation method, when the length of the service packet bit sequence of the second node is greater than or equal to 4096 and less than 6144, the transmission power adjustment step value is 3dB; when the length of the service packet bit sequence of the second node is greater than or equal to 6144 and less than or equal to 9182, the transmission power adjustment step value is 6dB.

[0015] In combination with the first aspect, in a possible implementation manner, the bit sequence length threshold is 4096.

[0016] In combination with the first aspect, in a possible implementation manner, the initial transmission power of the low-frequency detection signal is 13 dBm.

[0017] In combination with the first aspect, in a possible implementation manner, the sequence set used by the low-frequency detection signal includes at least an m-sequence and a pseudo-random sequence.

[0018] In combination with the first aspect, in a possible implementation method, if the resources used by the low-frequency detection signal only include one OFDM symbol, the m sequence is used as the sending sequence of the low-frequency detection signal; if the resources used by the low-frequency detection signal include greater than or equal to two OFDM symbols, the m sequence and the pseudo-random sequence are alternately used as the sending sequence of the low-frequency detection signal on different OFDM symbols.

[0019] In combination with the first aspect, in a possible implementation manner, the value of the variable t is a real number between 1 and 5.

[0020] In combination with the first aspect, in a possible implementation manner, the transmission beams generated by the second node and the third node are the same, or the beam widths of the generated transmission beams differ by no more than 3 degrees.

[0021] In combination with the first aspect, in a possible implementation method, if the first node fails to successfully receive the service packet bit sequence, the first node sends beam training configuration information to the second node, and the beam training configuration information includes at least description information of the beam training method and resource information of the beam training, wherein the description information of the beam training method is a beam training method based on a neural network of no more than 6 layers; the second node performs beam training based on the beam training configuration information to determine the optimal transmission beam, and uses the optimal transmission beam to retransmit the service packet bit sequence to the first node.

[0022] The present application provides a signal processing method, the method comprising: step 1: a first node generates low-frequency detection signal configuration information, the first node sends the low-frequency detection signal configuration information to a second node, wherein the low-frequency detection signal configuration information at least includes a starting transmission power of the second node, a transmission power adjustment step, a resource used to send the low-frequency detection signal, a sequence set used to send the low-frequency detection signal, and a bit sequence length threshold required to send the low-frequency detection signal, wherein the second node supports both low-frequency communication and high-frequency communication;

[0023] Step 2: The second node receives the low-frequency reference signal configuration information from the first node. If the bit sequence length of the service packet to be sent by the second node is greater than the bit sequence length threshold, the second node sends a low-frequency detection signal to a third node according to the low-frequency detection signal configuration information, wherein the third node supports both low-frequency communication and high-frequency communication and has performed high-frequency communication with the first node within t milliseconds, t>0;

[0024] Step 3: After the third node receives the low-frequency detection signal, if the third node determines that the strength of the received low-frequency detection signal is greater than the first receiving strength value, the third node sends the transmission beam description information used by the third node and the first node for high-frequency communication to the second node, and sends the relevant information of the low-frequency detection signal to the first node, and the first node determines the receiving beam for receiving the service packet bit sequence sent by the second node according to the relevant information of the low-frequency detection signal;

[0025] If the third node determines that the strength of the received low-frequency detection signal is less than or equal to the first receiving strength value, the third node sends the transmission beam description information used by the third node to perform high-frequency communication with the first node and the related information of the low-frequency detection signal to the first node, the first node determines the receiving beam used to receive the service packet bit sequence sent by the second node according to the related information of the low-frequency detection signal, and the first node sends the transmission beam description information used by the third node to perform high-frequency communication with the first node to the second node;

[0026] Step 4: the second node determines a transmission beam according to the transmission beam description information used by the third node and the first node for high-frequency communication, and uses the transmission beam to send the service packet bit sequence through high-frequency communication;

[0027] Step 5: The first node receives the service packet bit sequence through a receiving beam.

[0028] Compared with the prior art, the method of the present invention overcomes the problem of high-frequency transmission beam training overhead and improves the service quality of the mobile network. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A flowchart of a signal processing method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0031] The term "and / or" in this application can be a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0032] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or modules is not necessarily limited to those steps or modules that are clearly listed, but may include other steps or modules that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] In the fifth generation and future mobile communication systems, efficient signal processing methods are an important means to achieve high and low frequency communications and urgently need in-depth research.

[0034] In view of this, the present application provides a signal processing method. Figure 1 , the method comprising:

[0035] 101. The first node generates low-frequency detection signal configuration information, and the first node sends the low-frequency detection signal configuration information to the second node, wherein the low-frequency detection signal configuration information at least includes the starting transmission power of the second node, the transmission power adjustment step, the resources used for sending the low-frequency detection signal, the sequence set used for sending the low-frequency detection signal, and the bit sequence length threshold required for sending the low-frequency detection signal, wherein the second node supports both low-frequency communication and high-frequency communication.

[0036] The first node may be a base station, and the second node may be a first terminal.

[0037] 102. The second node receives low-frequency reference signal configuration information from the first node. If the bit sequence length of the service packet to be sent by the second node is greater than the bit sequence length threshold, the second node sends a low-frequency detection signal to the third node according to the low-frequency detection signal configuration information, wherein the third node supports both low-frequency communication and high-frequency communication and has conducted high-frequency communication with the first node within t milliseconds, and t>0.

[0038] The third node may also be the second terminal. The reason for doing so is to only find terminals that have recently communicated with the base station and are relatively close to the first terminal as references for subsequent beam selection, which can reduce beam training overhead and improve system spectrum efficiency.

[0039] 103. After the third node receives the low-frequency detection signal, if the third node determines that the strength of the received low-frequency detection signal is greater than the first receiving strength value, the third node sends the transmission beam description information used by the third node and the first node for high-frequency communication to the second node, and sends the relevant information of the low-frequency detection signal to the first node, and the first node determines the receiving beam for receiving the service packet bit sequence sent by the second node according to the relevant information of the low-frequency detection signal;

[0040] If the third node determines that the strength of the received low-frequency detection signal is less than or equal to the first receiving strength value, the third node sends the transmission beam description information used for high-frequency communication between the third node and the first node and the related information of the low-frequency detection signal to the first node, the first node determines the receiving beam used to receive the service packet bit sequence sent by the second node based on the related information of the low-frequency detection signal, and the first node sends the transmission beam description information used for high-frequency communication between the third node and the first node to the second node.

[0041] It should be noted that the first receiving strength value can be 15dB. After the second terminal receives the low-frequency detection signal, if the receiving strength of the low-frequency detection signal is greater than 15dB, the second terminal sends the transmission beam description information used by the second terminal and the base station for high-frequency communication to the first terminal, and sends the relevant information of the low-frequency detection signal to the base station. The base station determines the receiving beam for receiving the service packet bit sequence sent by the first terminal according to the relevant information of the low-frequency detection signal. The reason for doing this is that the second terminal is relatively close to the first terminal at this time, and the energy consumption of direct communication between the two is relatively low, thereby achieving the effect of terminal energy saving;

[0042] If the receiving strength of the low-frequency detection signal is less than or equal to 15dB, the second terminal sends the transmission beam description information used by the second terminal for high-frequency communication with the base station and the related information of the low-frequency detection signal to the base station. The base station determines the receiving beam for receiving the service packet bit sequence sent by the first terminal based on the related information of the low-frequency detection signal, and sends the transmission beam description information used by the second terminal for high-frequency communication with the base station to the first terminal.

[0043] 104. The second node determines a transmission beam according to the transmission beam description information used by the third node for high-frequency communication with the first node, and uses the transmission beam to send a service packet bit sequence through high-frequency communication.

[0044] 105. The first node receives the service packet bit sequence through a receiving beam.

[0045] In one implementation, the bit sequence length threshold is set to 4096. The reason for this is that if the traffic volume is not large, high frequency does not need to be used for communication, thereby effectively controlling the energy consumption of the system.

[0046] In one implementation, the initial transmission power of the low-frequency detection signal is 13 dBm. The reason for this is that field test results show that this power value can ensure the coverage of the low-frequency detection signal, thereby finding the terminal near the first terminal relatively quickly.

[0047] In one implementation, if the first terminal does not receive the transmission beam description information sent by the base station or the second terminal for the second terminal to communicate with the base station at a high frequency after sending a low-frequency detection signal, the first terminal needs to send a low-frequency detection signal again, and the transmission power is (initial transmission power + transmission power adjustment step length), wherein when the length of the service packet bit sequence of the first terminal is greater than or equal to 4096 and less than 6144, the transmission power adjustment step length is 3dB, and when the length of the service packet bit sequence of the first terminal is greater than or equal to 6144 and less than or equal to 9182, the transmission power adjustment step length is 6dB. The reason for this is that the longer the bit packet is, the more high-frequency transmission is required, so the first terminal can find the qualified second terminal as soon as possible through a large adjustment of the power.

[0048] In one implementation, the sequence set used to send the low-frequency detection signal includes at least an m-sequence and a pseudo-random sequence.

[0049] In one implementation, when the resource used to send the low-frequency detection signal contains only one OFDM symbol, the m sequence is used as the transmission sequence of the low-frequency detection signal; when the resource used to send the low-frequency detection signal contains more than or equal to two OFDM symbols, the m sequence and the pseudo-random sequence are used alternately on different OFDM symbols as the transmission sequence of the low-frequency detection signal. The reason for doing this is that the characteristics of different sequences can be used to improve the coverage and receiving sensitivity of the low-frequency detection signal.

[0050] In one implementation, the variable t is a real number between 1 and 5. The reason for this is that the base station configures the variable according to its own high-frequency scheduling situation. If there are many schedulings, the variable is configured to be smaller, otherwise it is configured to be larger.

[0051] In one implementation, the transmission beams of the first terminal and the second terminal are generated in the same manner, or the beam widths of the transmission beams generated by the first terminal and the transmission beams generated by the second terminal differ by no more than 3 degrees. The reason for this is to ensure that the two terminal beams are implemented in a similar manner as much as possible, to ensure that the high-frequency beams can be effectively aligned, and to avoid degradation of high-frequency transmission performance.

[0052] In one implementation, if the base station fails to successfully receive the service packet bit sequence, the base station sends beam training configuration information to the first terminal, where the beam training configuration information includes at least description information of the beam training method and resource information of the beam training, wherein the description information of the beam training method is a beam training method based on a neural network with no more than 6 layers. The reason for doing this is that the overhead of beam training can be effectively reduced through the neural network.

[0053] In one implementation, the first terminal performs beam training based on the beam training configuration information, determines an optimal transmission beam, and uses the optimal transmission beam to retransmit a service packet bit sequence to the base station.

[0054] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0055] In the embodiments provided in this application, it should be understood that the disclosed methods can be implemented in other ways without exceeding the spirit and scope of this application. The current embodiment is only an illustrative example and should not be used as a limitation. The specific content given should not limit the purpose of this application. For example, some features can be ignored or not executed.

[0056] The technical means disclosed in the present application are not limited to the technical means disclosed in the above-mentioned implementation methods, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications are also regarded as the protection scope of this application.

[0057] The above is a detailed introduction to a signal processing method provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and its core idea of ​​the present application. At the same time, for those of ordinary skill in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A signal processing method, characterized in that: The method comprises: Step 1: The first node generates low-frequency detection signal configuration information, and the first node sends the low-frequency detection signal configuration information to the second node, wherein the low-frequency detection signal configuration information at least includes the starting transmission power of the second node, the transmission power adjustment step, the resources used to send the low-frequency detection signal, the sequence set used to send the low-frequency detection signal, and the bit sequence length threshold required for sending the low-frequency detection signal, wherein the second node supports both low-frequency communication and high-frequency communication; Step 2: The second node receives the low-frequency reference signal configuration information from the first node. If the bit sequence length of the service packet to be sent by the second node is greater than the bit sequence length threshold, the second node sends a low-frequency detection signal to a third node according to the low-frequency detection signal configuration information, wherein the third node supports both low-frequency communication and high-frequency communication and has performed high-frequency communication with the first node within t milliseconds, t>0; Step 3: After the third node receives the low-frequency detection signal, if the third node determines that the strength of the received low-frequency detection signal is greater than the first receiving strength value, the third node sends the transmission beam description information used by the third node and the first node for high-frequency communication to the second node, and sends the relevant information of the low-frequency detection signal to the first node, and the first node determines the receiving beam for receiving the service packet bit sequence sent by the second node according to the relevant information of the low-frequency detection signal; If the third node determines that the strength of the received low-frequency detection signal is less than or equal to the first receiving strength value, the third node sends the transmission beam description information used by the third node to perform high-frequency communication with the first node and the related information of the low-frequency detection signal to the first node, the first node determines the receiving beam used to receive the service packet bit sequence sent by the second node according to the related information of the low-frequency detection signal, and the first node sends the transmission beam description information used by the third node to perform high-frequency communication with the first node to the second node; Step 4: the second node determines a transmission beam according to the transmission beam description information used by the third node and the first node for high-frequency communication, and uses the transmission beam to send the service packet bit sequence through high-frequency communication; Step 5: The first node receives the service packet bit sequence through a receiving beam.

2. The signal processing method according to claim 1, characterized in that: The method further comprises: If, after the second node sends the low-frequency detection signal, it does not receive the transmission beam description information sent by the first node or the third node for high-frequency communication between the first node and the third node within a set time threshold, the second node sends the low-frequency detection signal again, wherein the transmission power of the second node is the starting transmission power plus the transmission power adjustment step.

3. The signal processing method according to claim 2, characterized in that: When the length of the service packet bit sequence of the second node is greater than or equal to 4096 and less than 6144, the transmission power adjustment step is 3dB; when the length of the service packet bit sequence of the second node is greater than or equal to 6144 and less than or equal to 9182, the transmission power adjustment step is 6dB.

4. The signal processing method according to claim 1, characterized in that: The bit sequence length threshold is 4096.

5. The signal processing method according to claim 1, characterized in that: The initial transmission power of the low-frequency detection signal is 13dBm.

6. The signal processing method according to claim 1, characterized in that: The sequence set used by the low-frequency detection signal at least includes an m-sequence and a pseudo-random sequence.

7. The signal processing method according to claim 6, characterized in that: If the resource used by the low-frequency detection signal includes only one OFDM symbol, an m sequence is used as a transmission sequence of the low-frequency detection signal; If the resources used by the low-frequency detection signal include more than or equal to two OFDM symbols, an m-sequence and a pseudo-random sequence are alternately used as a transmission sequence of the low-frequency detection signal on different OFDM symbols.

8. The signal processing method according to claim 1, characterized in that: The variable t is a real number between 1 and 5.

9. The signal processing method according to claim 1, characterized in that: The transmission beams generated by the second node and the third node are the same, or the beam widths of the generated transmission beams differ by no more than 3 degrees.

10. The signal processing method according to claim 1, characterized in that: If the first node fails to successfully receive the service packet bit sequence, the first node sends beam training configuration information to the second node, where the beam training configuration information at least includes description information of a beam training method and resource information of the beam training, wherein the description information of the beam training method is a beam training method based on a neural network with no more than 6 layers; The second node performs beam training based on the beam training configuration information to determine an optimal transmission beam, and uses the optimal transmission beam to retransmit the service packet bit sequence to the first node.

Images