Multi-antenna information transmitting method, network equipment and storage medium

Abstract

The invention relates to a multi-antenna information transmitting method, network equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: detecting the downlink congestion degree of a remote radio unit (RRU) and the existence state of a target service to obtain a detection result; determining the working mode of the RRU based on the detection result; wherein the transmitting ports of the RRU in different working modes are in different working states; and sending information to a terminal side through the determined working mode of the RRU. Through the method, the starting of the transmitting port can be adapted to the actual demand of information transmission, and unnecessary starting of the transmitting port can be avoided while the transmitting demand is met, so that the purposes of saving energy consumption and improving user perception can be achieved, and the information transmission effect in a multi-antenna mode is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to a multi-antenna information transmission method, a network device, and a storage medium. Background Art

[0002] To increase network capacity, operators will choose to deploy multi-antenna RRU (Remote Radio Unit), such as FDD (Frequency division duplex) LTE (Long Term Evolution) BAND1 / 3 / 7 and FNR 700M, FNR2.1G, which are widely applicable to 4T4R (4Transmit 4Receive, 4 transmitters and 4 receivers). However, after air interface transmission, multiple transmission ports cannot be orthogonal, resulting in multi-antenna RRU failing to achieve expected capacity gain and increasing base station energy consumption.

[0003] In the related technology, in order to save energy, when the base station detects a decrease in the number of users, the base station will shut down the channel (for example, shut down the two transmission channels in the base station 4T). However, during the channel shutdown period, the user experience gain brought by multiple antennas cannot be enjoyed, making it impossible to balance energy saving and user perception. Therefore, a solution is needed that can balance energy saving and user perception. Summary of the invention

[0004] The embodiment of the present application provides a multi-antenna information transmission method, a network device and a storage medium, which can achieve the purpose of saving energy consumption and improving user perception, and improve the information transmission effect in the multi-antenna mode. The technical solution is as follows:

[0005] On the one hand, a multi-antenna information transmission method is provided, the method comprising:

[0006] Detecting the downlink congestion level of the radio remote unit RRU and the existence status of the detection target service to obtain the detection result;

[0007] Determine the working mode of the RRU based on the detection result; wherein each transmitting port of the RRU is in a different working state under different working modes;

[0008] Information is sent to the terminal side through the determined working mode of the RRU.

[0009] On the other hand, a network device is provided, comprising a processor and a memory, wherein the memory stores at least one computer program, and the at least one computer program is loaded and executed by the processor to implement the above-mentioned multi-antenna information transmission method.

[0010] On the other hand, a readable storage medium is provided, wherein at least one computer program is stored in the readable storage medium, and the computer program is loaded and executed by a processor to implement the above-mentioned multi-antenna information transmission method.

[0011] On the other hand, a computer program product is provided, the computer program product comprising at least one computer program, the computer program being loaded and executed by a processor to implement the multi-antenna information transmission method provided in the above-mentioned various optional implementations.

[0012] The technical solution provided by this application may have the following beneficial effects:

[0013] The multi-antenna information transmission method provided in the embodiment of the present application, the multi-antenna information transmission method provided in the embodiment of the present application, obtains the detection result by detecting the downlink congestion level of the RRU and the existence status of the target service, determines the working mode of the RRU based on the detection result, and sends information to the terminal side through the determined working mode of the RRU; since each transmitting port of the RRU is in a different working state in different working modes, it is possible to achieve the adaptation of the activation of the transmitting port to the actual needs of information transmission, while meeting the transmission needs, it is also possible to avoid unnecessary activation of the transmitting port, thereby achieving the purpose of saving energy consumption and improving user perception, and improving the information transmission effect in the multi-antenna mode.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0016] Figure 1 A flowchart of a multi-antenna information transmission method provided by an exemplary embodiment of the present application is shown;

[0017] Figure 2 A flowchart of a multi-antenna information transmission method provided by an exemplary embodiment of the present application is shown;

[0018] Figure 3 A schematic diagram of RRU working mode switching provided by an exemplary embodiment of the present application is shown;

[0019] Figure 4 A schematic diagram of RRU working mode switching provided by an exemplary embodiment of the present application is shown;

[0020] Figure 5A schematic diagram of a process of inter-cell interference coordination provided by an exemplary embodiment of the present application is shown;

[0021] Figure 6 A schematic diagram showing a base station system structure provided by an exemplary embodiment of the present application is shown;

[0022] Figure 7 It is a block diagram of a network device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0023] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0024] In an embodiment of the present application, a multi-antenna mode (such as 4T4R, 8T8R) corresponds to a few-antenna mode (such as 2T4R). Due to the inability to ensure orthogonality of multi-antenna signals after air interface transmission, compared with the few-antenna mode, it is far from possible to achieve the effect of transmitting a preset multiple of power. Correspondingly, the downlink air interface capacity cannot be increased by a preset multiple. For example, the 4T4R mode is far from being able to transmit twice the power compared to the 2T4R mode, thereby doubling the downlink air interface capacity. Therefore, the power efficiency of the multi-antenna mode is much lower than that of the few-antenna mode, but the multi-antenna mode still has better air interface performance than the few-antenna mode. Therefore: the multi-antenna mode is "high performance + low power efficiency", and the few-antenna mode is "low performance + high power efficiency". Therefore, by changing the working mode of the RRU, switching between the multi-antenna mode and the few-antenna mode can be achieved, and applying the corresponding RRU working mode in the adapted scenario can achieve the effect of balancing energy saving and user perception.

[0025] Based on the above description, the present application provides a multi-antenna information transmission method, which can solve the problem of balancing energy saving and user perception. Figure 1 A flowchart of a multi-antenna information transmission method provided by an exemplary embodiment of the present application is shown. The method can be executed by a network device, which can be a management device on the base station side, such as Figure 1 As shown, the multi-antenna information transmission method may include the following steps:

[0026] Step 110, detecting the downlink congestion level of the remote radio unit RRU and the existence status of the detection target service to obtain a detection result.

[0027] The detection result corresponding to the downlink congestion level in the detection result can indicate whether the RRU has downlink congestion or no downlink congestion. Further, it can also indicate the level of downlink congestion when there is downlink congestion. The detection result corresponding to the target service in the detection result can indicate the existence of the target service and the absence of the target service. The detection result can be different combinations of the downlink congestion level and the existence status of the target service.

[0028] Step 120, determining the working mode of the RRU based on the detection result; wherein, in different working modes, each transmitting port of the RRU is in a different working state.

[0029] In the embodiment of the present application, the working mode of the RRU determined based on different detection results is also different. In different working modes, each transmitting port of the RRU is in a different working state, wherein the correspondence between the working mode and the working state of each transmitting port of the RRU can be preset, and different types and numbers of RRU working modes can be set based on different requirements.

[0030] Step 130: Send information to the terminal side through the determined working mode of the RRU.

[0031] To summarize, the multi-antenna information transmission method provided in the embodiment of the present application obtains the detection result by detecting the downlink congestion level of the RRU and the existence status of the target service, determines the working mode of the RRU based on the detection result, and sends information to the terminal side through the determined working mode of the RRU; since each transmitting port of the RRU is in a different working state under different working modes, it is possible to achieve the adaptation of the activation of the transmitting port to the actual needs of information transmission, and while meeting the transmission requirements, it is also possible to avoid unnecessary activation of the transmitting port, thereby achieving the purpose of saving energy consumption and improving user perception, and improving the information transmission effect under the multi-antenna mode.

[0032] The embodiment of the present application schematically provides three RRU working modes, namely, the first mode, the second mode and the third mode, wherein in the first mode, the RRU enables some transmission ports, and the unenabled transmission ports are in a silent state, that is, a state of not working but the power amplifier is powered on; in the second mode, the RRU increases the number of enabled transmission ports, wherein the number of transmission ports enabled by the RRU in the second mode is greater than the number of transmission ports enabled in the first mode; in the third mode, the RRU enables some transmission ports, and the unenabled transmission ports are in a shutdown state, that is, a state of not working and the power amplifier is powered off. The number of transmission ports enabled in each mode can be set based on actual needs, and the present application does not limit this; based on the above-mentioned setting of the RRU working mode, Figure 2A flowchart of a multi-antenna information transmission method provided by an exemplary embodiment of the present application is shown. The method can be executed by a network device, which can be a management device on the base station side, such as Figure 2 As shown, the multi-antenna information transmission method may include the following steps:

[0033] Step 210: Detect the downlink congestion level of the remote radio unit RRU and the existence status of the detection target service to obtain a detection result.

[0034] For downlink data cached in the MAC (Media Access Control) layer, the base station will send it out at the maximum air interface capacity. Data that cannot be sent in time will be cached in the MAC layer. Generally speaking, when data is cached, the downlink PRB (Physical Resource Block) utilization rate will reach 100%, and downlink congestion will occur at this time. In the embodiment of the present application, the process of detecting the downlink congestion level of the RRU can be implemented as follows:

[0035] Obtain the congestion duration required for the RRU to send the information buffer on the base station side to the terminal side;

[0036] When the congestion duration is greater than or equal to the first congestion duration threshold, it is determined that downlink congestion exists;

[0037] When the congestion duration is less than the first congestion duration threshold, it is determined that the downlink is not congested.

[0038] Among them, the process of obtaining the congestion duration required for the RRU to send the information cache on the base station side to the terminal side can be implemented as follows: obtaining the information cache to be sent to each UE (User Equipment) on the base station side; based on the air interface capability of each UE and the information cache corresponding to each UE, obtaining the minimum information sending duration required for each UE; and determining the sum of the minimum information sending duration required for each UE as the congestion duration required for the RRU to send the information cache on the base station side to the terminal side. Schematically, assuming that there are n UEs with information to be sent on the downlink MAC layer on the base station side, namely UE1, UE2, ...UEn, according to the air interface capability of each UE, assuming that the RB resources are allocated to one of the UEs, then the minimum information sending duration required to clear the data cache of these n UEs is T1, T2, ...Tn, respectively, then the time to clear the entire base station data cache is T_block = T1 + T2 + ... + Tn, and T_block is the congestion duration.

[0039] In the embodiments of the present application, multiple congestion duration thresholds may be set, and based on the multiple congestion duration thresholds, congestion level划分 of the congestion degree may be implemented; among them, the first congestion duration threshold is used to determine whether there is downlink congestion; further, a second congestion duration threshold and a third congestion duration threshold may also be included; illustratively, if the first congestion duration threshold is BlockThr1, the second congestion duration threshold is BlockThr2, and the third congestion duration threshold is BlockThr3, then, if T_block < BlockThr1, it is determined that "downlink is not congested"; if BlockThr1 ≤ T_block < BlockThr2, the congestion level is determined to be "downlink lightly congested"; if BlockThr2 ≤ T_block < BlockThr3, the congestion level is determined to be "downlink moderately congested"; if T_block > BlockThr3, the congestion level is determined to be "downlink severely congested". The values of each congestion duration threshold may be set based on actual requirements, and the present application does not limit this.

[0040] In the embodiments of the present application, the existence of a target service may mean the existence of a weak field for critical tasks. Among them, critical tasks usually refer to services such as VoLTE (Voice over Long-Term Evolution), VoIP (Voice over Internet Protocol), and VoNR (Voice over New Radio) that are small packets and affect the user experience. Due to the small TBsize (Transport Block size), even if the MCS (Modulation and Coding Scheme) is 0, the number of RBs (Resource Blocks) is not large, and the downlink power and RB resources of the base station cannot be fully utilized, resulting in limited weak field performance. Whether there is a weak field can be judged by the relationship between the downlink MCS and the index value threshold. Therefore, in the embodiments of the present application, the process of detecting the existence state of the target service may be implemented as:

[0041] When the current service is within the specified service range and the MCS index value corresponding to the base station side is lower than the index value threshold, it is determined that there is a target service;

[0042] When the current service is not within the specified service range, or the MCS index value corresponding to the base station side is higher than or equal to the index value threshold, it is determined that there is no target service.

[0043] The designated service range may be set based on actual needs, and the index value threshold may also be set based on actual needs; schematically, when the index value threshold is set to 4, when the current service is within the designated service range and the MCS corresponding to the base station side is less than 4, it is determined that the target service exists; when the current service is not within the designated range, or the MCS corresponding to the base station side is greater than or equal to 4, it is determined that the target service does not exist. Optionally, the MCS corresponding to the base station side may refer to the average MCS within the target time period, and the length of the target time period may also be set based on actual needs.

[0044] Optionally, in order to improve the comprehensiveness of the weak field characterization, on the basis of using the downlink MCS to characterize the weak field, the downlink BLER (Block Error Rate) can be further introduced to characterize the weak field, that is, when the corresponding MCS index value on the base station side is lower than the index value threshold and the downlink block error rate is greater than the error rate threshold, it is determined that a weak field exists; when the corresponding MCS index value on the base station side is higher than or equal to the index value threshold, or the downlink block error rate is less than or equal to the error rate threshold, it is determined that there is no weak field.

[0045] Step 220, when the detection result indicates that the downlink uncongested duration does not exceed the first duration threshold and there is no target service, some of the transmitting ports of the RRU are enabled, and the unenabled transmitting ports are set to a silent state. Correspondingly, the working mode of the RRU is determined to be the first mode; the silent state refers to a state in which the RRU is not working and the power amplifier is powered on.

[0046] When the detection result indicates that the duration of downlink non-congestion does not exceed the first duration threshold and there is no target service, it means that the "low performance + high power efficiency" low-antenna mode can be entered, and energy consumption can be saved without losing user experience; in general, in order to reduce mutual interference between cells covered by the base station and improve energy saving effect, the working mode of the RRU usually defaults to the first mode; taking the multi-antenna mode as the xTyR mode, the downlink is N transmitting ports as an example, where xT represents x antennas transmitting and yR represents y antennas receiving; the first mode can be the xTyR (port2~N mute) mode, that is, the downlink port0~1 works normally, and the downlink port2~N is in a silent state. At this time, port2~N does not send any information to achieve energy saving effect, but the power amplifier of the downlink port2~N is still in a powered-on state, and can be switched to the second mode at any time to improve downlink performance. It should be noted that the above illustration of the first mode is only for illustration, and the number and type of some transmitting ports enabled in the first mode can be set based on actual needs. For example, the first mode can be the xTyR (port3~N mute) mode, etc.

[0047] Step 230, when the detection result indicates that there is downlink congestion or there is a target service, the number of transmission ports enabled by the RRU is increased, and correspondingly, the working mode of the RRU is determined to be the second mode; the number of transmission ports enabled in the second mode is greater than the number of transmission ports enabled in the first mode.

[0048] When the detection result indicates that there is downlink congestion or the target service exists, it means that the downlink performance needs to be improved, that is, entering the multi-antenna mode of "high performance + low power efficiency" to ensure user experience and improve the downlink capacity of the cell; the number of transmitting ports enabled in the second mode satisfies the condition that it is greater than the number of transmitting ports enabled in the first mode. Assuming that the first mode is the xTyR (port3~N mute) mode, and still taking the multi-antenna mode as the xTyR mode as an example, the second mode can be the xTyR (port2~N mute) mode; optionally, the base station side can configure the second mode by configuring the port difference, and the configured port difference is the difference between the number of transmitting ports enabled in the second mode and the number of transmitting ports enabled in the first mode; or, the transmitting ports enabled in the second mode can be all transmitting ports, and the second mode is the xTyR mode. At this time, the downlink port0, port1,...portN all work normally.

[0049] Step 240, when the detection result indicates that the downlink uncongested duration exceeds the first duration threshold and there is no target service, some of the transmitting ports of the RRU are enabled, and the unenabled transmitting ports are set to the shutdown state. Correspondingly, the working mode of the RRU is determined to be the third mode; the shutdown state refers to a state in which the RRU is not working and the power amplifier is powered off.

[0050] When the detection result indicates that the downlink uncongested duration exceeds the first duration threshold and there is no target service, it means that the energy consumption can be further reduced. At this time, the base station side can change the working mode of the RRU to the third mode. Since the unenabled transmitting ports in the third mode are in the off state, that is, not working and the power amplifier is powered off, the energy consumption caused by powering the power amplifier can be further reduced, thereby improving the energy saving effect.

[0051] In a possible implementation, some transmit ports of the RRU enabled in the third mode may be the same as some transmit ports enabled in the first mode. In this case, the air interface performance of the third mode is the same as that of the first mode, but because the power amplifier corresponding to the transmit port not enabled in the third mode is powered off, the energy consumption is lower.

[0052] In another possible implementation manner, the number of some transmit ports of the RRU enabled in the third mode may be smaller than the number of some transmit ports enabled in the first mode.

[0053] In another possible implementation, when the information sending time of the RRU is within the target time range, some transmitting ports of the RRU are enabled, and the unenabled transmitting ports are set to the off state, and correspondingly, the working mode of the RRU is determined to be the third mode.

[0054] Among them, the target time range can be determined based on the historical statistics of the working mode of the RRU. Schematically, if in some time periods, the probability of the RRU's working mode entering the second mode is lower than the probability threshold, these time periods can be determined as the target time range, and when the information sending time of the RRU is within the target time range, the working mode of the RRU is determined to be the third mode.

[0055] Step 250: Send information to the terminal side through the determined working mode of the RRU.

[0056] To summarize, the multi-antenna information transmission method provided in the embodiment of the present application obtains the detection result by detecting the downlink congestion level of the RRU and the existence status of the target service, determines the working mode of the RRU based on the detection result, and sends information to the terminal side through the determined working mode of the RRU; since each transmitting port of the RRU is in a different working state under different working modes, it is possible to achieve the adaptation of the activation of the transmitting port to the actual needs of information transmission, and while meeting the transmission requirements, it is also possible to avoid unnecessary activation of the transmitting port, thereby achieving the purpose of saving energy consumption and improving user perception, and improving the information transmission effect under the multi-antenna mode.

[0057] In such Figure 1 or Figure 2 On the basis of the embodiment shown, in the embodiment of the present application, it also involves automatic mode switching between various working modes of the RRU. Optionally, the base station side detects the downlink congestion level of the RRU and the existence status of the target service with a target period, so as to switch the working mode of the RRU according to the obtained detection results to adapt to different business scenario requirements. The length of the target period can be set based on actual needs. The switching between various modes is described below:

[0058] When the current working mode of the RRU is the first mode:

[0059] 1. When the detection result indicates that there is downlink congestion or there is a target service, the number of transmitting ports enabled by the RRU is increased, and correspondingly, the working mode of the RRU is switched to the second mode.

[0060] 2. When the detection result indicates that the downlink uncongested duration exceeds the first duration threshold and there is no target service, some transmitting ports of the RRU are enabled and the unenabled transmitting ports are set to the shutdown state. Correspondingly, the working mode of the RRU is switched to the third mode.

[0061] When the current working mode of the RRU is the second mode:

[0062] 1. When it is determined that the duration of downlink uncongestion is within a preset time interval and meets the target conditions, some transmitting ports of the RRU are enabled, and the unenabled transmitting ports are set to a silent state. Correspondingly, the working mode of the RRU is switched to the first mode; wherein the upper limit of the preset time interval is a first duration threshold, and the target conditions include: there is no target service and the duration of sending information through the second mode is greater than the second duration threshold.

[0063] That is to say, after the RRU sends information in the second mode, the information cache on the base station side will be reduced, and the congestion duration will be reduced accordingly. When the downlink non-congestion duration is within the preset time interval, there is no target service, and the duration of sending information in the second mode exceeds the second duration threshold, the working mode of the RRU is switched from the second mode to the first mode. The second duration threshold can be set to limit the shortest duration of staying in the second mode to reduce state ping-pong.

[0064] 2. When it is determined that the downlink uncongested duration exceeds the first duration threshold and meets the target condition, some transmitting ports of the RRU are enabled, and the unenabled transmitting ports are set to the shutdown state. Correspondingly, the working mode of the RRU is switched to the third mode.

[0065] Illustratively, if the first duration threshold is 500ms, the preset time interval is 20ms to 500ms, and the second duration threshold is 1000ms, then the timing starts from sending information through the second mode of the RRU. When the duration reaches 1000ms, the downlink uncongested duration is obtained. If the downlink uncongested duration is less than 20ms, the information is still sent through the second mode of the RRU. If the downlink uncongested duration is within the time interval of 20ms to 500ms, the working mode of the RRU is switched from the second mode to the first mode. If the downlink uncongested duration is greater than 1000ms, the working mode of the RRU is switched from the second mode to the third mode.

[0066] When the current working mode of the RRU is the third mode:

[0067] 1. When it is detected that the congestion duration is greater than the second congestion duration threshold or there is a target service, the number of transmitting ports enabled by the RRU is increased, and correspondingly, the working mode of the RRU is switched to the second mode.

[0068] When the congestion duration is greater than the second congestion duration threshold, it indicates that the downlink congestion level is "downlink severe congestion" or "downlink severe congestion".

[0069] The third mode is an energy-saving state, but when the downlink congestion level is high or the downlink weak field performance of key services needs to be improved (that is, there is a target service), it is necessary to enter the relatively high-performance second mode. Therefore, there is no need to switch from the third mode to the first mode.

[0070] Take the 4T4R mode for example. Figure 3 A schematic diagram of RRU working mode switching provided by an exemplary embodiment of the present application is shown. Figure 3 As shown, in the multi-antenna mode of 4T4R mode, if the three working modes of RRU are: the first mode: 4T4R mode (port2~3mute), at this time, the downlink port0~1 works normally, port2~3 does not transmit any data and the power amplifier of port2~3 is still in the power-on state; the second mode: 4T4R mode, at this time, the downlink port0~3 all works normally; the third mode: 4T4R mode (port2~3 off), at this time, the downlink port0~1 works normally, port2~3 does not transmit any data and the power amplifier of port2~3 is still in the power-off state; then, when the working mode of RRU is switched:

[0071] When the working mode of the RRU is the first mode: 4T4R mode (port2-3 mute):

[0072] When downlink congestion or target service is detected, the working mode of the RRU is switched from the first mode to the second mode: 4T4R mode;

[0073] When it is detected that the downlink non-congestion duration exceeds the first duration threshold and there is no target service, the working mode of the RRU is switched from the first mode to the third mode: 4T4R mode (ports 2-3 are turned off).

[0074] When the working mode of the RRU is the second mode: 4T4R mode:

[0075] When it is detected that the following conditions are met at the same time, the working mode of the RRU is switched from the second mode to the first mode: 4T4R mode (port2~3mute), and the above conditions include: the duration of downlink uncongestion is within the preset time interval, there is no target service and T12 timeout, wherein T12 timeout represents the second duration threshold, and T12 timeout indicates that the duration of sending information through the second mode is greater than the second duration threshold.

[0076] When it is detected that the following conditions are met at the same time, the working mode of the RRU is switched from the second mode to the third mode: 4T4R mode (port2~3 are shut down), and the above conditions include: the duration of downlink uncongestion exceeds the first duration threshold, there is no target service, and the duration of sending information through the second mode is greater than the second duration threshold.

[0077] When the working mode of the RRU is the third mode: 4T4R mode (ports 2 and 3 are shut down):

[0078] When it is detected that the downlink congestion level is downlink moderate congestion or downlink moderate congestion, or there is a target service, the working mode of the RRU is switched from the third mode to the second mode: 4T4R mode.

[0079] Take the 8T8R mode for example. Figure 4 A schematic diagram of RRU working mode switching provided by an exemplary embodiment of the present application is shown. Figure 4 As shown, when the multi-antenna mode is 8T8R mode, if the three working modes of RRU are: the first mode: 8T8R mode (port2~7mute), at this time, the downlink port0~1 works normally, port2~7 does not transmit any data and the power amplifier of port2~7 is still in the power-on state; the second mode: 8T8R mode, at this time, the downlink port0~7 all works normally; the third mode: 8T8R mode (port2~7 is turned off), at this time, the downlink port0~1 works normally, port2~7 does not transmit any data and the power amplifier of port2~7 is still in the power-off state, the RRU working mode switching process of 8T8R mode is similar to the RRU working mode switching process of 8T8R mode, which will not be repeated here.

[0080] To summarize, in the multi-antenna information transmission method provided in the embodiment of the present application, the base station side periodically detects the downlink congestion level of the RRU and the existence status of the target service, and adaptively switches the working mode of the RRU based on the detection results, so that the working mode of the RRU can be more adaptable to the requirements of different business scenarios, while taking into account both energy saving and user perception, thereby improving the information transmission effect of the RRU.

[0081] In order to reduce downlink interference between cells, the multi-antenna information transmission method provided in the embodiment of the present application can also realize interference coordination between cells. In this method, the base station side can adaptively adjust the first congestion duration threshold and / or the index value threshold based on the load level of the neighboring cell to realize interference coordination between cells; wherein the target cell indicates the neighboring cell to perform the first congestion duration and / or the index value threshold adjustment process can be implemented as follows:

[0082] Obtaining the downlink comprehensive congestion degree of the target cell corresponding to the base station side; the downlink comprehensive congestion degree is used to indicate the load degree of the target cell;

[0083] Determine the load level of the target cell based on the comprehensive downlink congestion;

[0084] When the load level of the target cell is higher than the level threshold, first notification information is sent to neighboring cells of the target cell to instruct the neighboring cells to perform at least one of the following operations: increase the value of the first congestion duration threshold and increase the index value threshold.

[0085] By sending a first notification message to a neighboring cell so that the neighboring cell increases the value of the first congestion duration threshold, and / or increases the index value threshold, the difficulty of the neighboring cell entering the second mode to send information is increased, so that the neighboring cell enters the second mode as little as possible to reduce the interference of the neighboring cell to the target cell. Among them, the neighboring cell can be the N neighboring cells with the largest number of switching times, or the neighboring cell can be the N neighboring cells with the largest coverage, N is a positive integer, or the neighboring cell can also be customized based on actual needs, which is not limited in this application.

[0086] The downlink comprehensive congestion degree is used to determine the degree to which the cell needs help from other cells. The downlink comprehensive congestion degree can be determined based on the cumulative duration of downlink congestion within the target duration, the average duration of downlink congestion within the target duration, and the number of users with the target service. The calculation method of the downlink comprehensive congestion degree can be expressed as follows:

[0087] BlockDegree=Min((AvgBT / 30) 3 *(AvgBL / 100) 2 +weakNum,x)

[0088] Among them, BlockDegree represents the comprehensive downlink congestion, AvgBT represents the cumulative duration of downlink congestion within the target duration, AvgBL represents the average duration of downlink congestion within the target duration, and weakNum represents the number of users with target services; it can be seen from the above formula that the longer the cumulative duration of downlink congestion within the target duration, the larger the BlockDegree is, and it increases exponentially; the larger the average duration of downlink congestion within the target duration, the larger the BlockDegree is, and it increases exponentially; for each additional user with target services, BlockDegree+1; the upper limit of BlockDegree is x, and the upper limit value of BlockDegree can be set based on actual needs. Schematically, the value of x can be 72; the value of the target duration can be set based on actual needs. Schematically, the target duration can be set to 60s or other values, and this application does not limit this.

[0089] After obtaining the downlink comprehensive congestion degree, the process of determining the load level of the target cell based on the downlink comprehensive congestion degree can be implemented as follows:

[0090] When the target congestion duration exceeds the second threshold duration and the target cell's downlink comprehensive congestion is greater than the congestion threshold, it is determined that the load level of the target cell is higher than the level threshold; the target congestion duration is the congestion duration required for the target cell to send the most recent information.

[0091] When the target congestion duration exceeds the second threshold duration, it indicates that the congestion level of information transmission of the target cell is "moderate downlink congestion" or moderate downlink congestion. On this basis, if the comprehensive downlink congestion of the target cell is greater than the congestion threshold, it indicates that other cells help the target cell.

[0092] Correspondingly, when the target cell corresponding to the base station side receives the notification information sent by other cells, the value of the first congestion duration threshold of the target cell can also be adjusted according to the notification message. Therefore, the method further includes:

[0093] When receiving the second notification information sent by the neighboring cell, perform at least one of the following operations based on the second notification information: increase the value of the first congestion duration threshold and increase the index value threshold; the second notification information is used to indicate that the load level of the neighboring cell is higher than the level threshold.

[0094] In an embodiment of the present application, a threshold offset value BlockOffset may be defined, and the value range of the threshold offset value may be set based on actual needs. Schematically, the value range of the threshold offset value may be 0ms to 100ms. When the notification message is not received, the value of the threshold offset value may be 0ms by default. After receiving the notification message, the cell receiving the notification message may adjust the first congestion duration threshold by adjusting the value of the threshold offset value, that is, the new first congestion duration threshold = the first congestion duration threshold + the threshold offset value; optionally, the cell receiving the notification message may also synchronously adjust the second congestion duration threshold and the third congestion duration threshold. In this case, the adjustment of the congestion duration threshold may be expressed as:

[0095] BlockThr1'=BlockThr1+BlockOffset

[0096] BlockThr2'=BlockThr2+BlockOffset

[0097] BlockThr3'=BlockThr3+BlockOffset

[0098] Among them, corresponding to the first congestion duration threshold BlockThr1, the second congestion duration threshold BlockThr2 and the third congestion duration threshold BlockThr3, BlockThr1', BlockThr2', BlockThr3' respectively represent the new first congestion duration threshold, the new second congestion duration threshold and the new third congestion duration threshold. The larger the BlockOffset, the higher the corresponding congestion duration threshold, the more difficult it is to enter the congestion state, and thus the more difficult it is to change the working mode of the RRU to the second mode.

[0099] Optionally, the target cell may receive a second notification message sent by one or more neighboring cells. Indicatively, when there is severe congestion in the neighboring cell, the target cell will be notified of its own load level through a second notification message, and the notification message may include the downlink comprehensive congestion of the corresponding cell; based on this, assuming that the target cell receives the BlockDegrees of p neighboring cells, namely: nbBlockDegree(1), nbBlockDegree(2), ..., nbBlockDegree(p), and adjusts the BlockOffset of the cell, and the adjustment method is as follows:

[0100]

[0101] Among them, y represents the upper limit of BlockOffset. If the value range of BlockOffset is 0 to 100 ms, the value of y is 100 ms. The larger the value of BlockOffset is, the more difficult it is to determine that there is downlink congestion, and the more difficult it is to switch the working mode to the second mode.

[0102] In addition, the cell may also adjust the index value threshold to increase the difficulty of determining the existence of the target service, so as to increase the difficulty of switching the working mode to the second mode. The adjustment method is as follows:

[0103]

[0104] Among them, McsOffset represents the index value threshold, z represents the upper limit of McsOffset, and the upper limit of McsOffset can be limited based on actual needs. Indicatively, z can be 4db. The larger the value of McsOffset, the more difficult it is to determine the existence of the target business, and the more difficult it is to switch the working mode to the second mode.

[0105] Take the target cell as an example. Figure 5 FIG. 4 shows a schematic diagram of a process flow of inter-cell interference coordination provided by an exemplary embodiment of the present application. Figure 5 As shown, the process may include the following steps:

[0106] S501, the target cell periodically calculates the comprehensive downlink congestion degree of the cell.

[0107] The period for the target cell to calculate the comprehensive downlink congestion of the cell can be set based on actual needs.

[0108] S502: Based on the downlink comprehensive congestion of the cell, determine whether it is necessary to notify the neighboring cell to perform interference coordination. If so, execute S503; otherwise, return to S501.

[0109] S503: Send a first notification message to a neighboring cell.

[0110] S504: Receive a second notification message sent by a neighboring cell.

[0111] While the target cell detects whether it needs interference coordination with the neighboring cell, it also receives the second notification information fed back by the neighboring cell.

[0112] S505: Adaptively control the difficulty of the RRU's working mode entering the second mode according to the received second notification message.

[0113] After adaptively adjusting the first congestion duration threshold and / or the index value threshold to complete adaptive adjustment of the difficulty of the RRU's working mode entering the second mode, return to S501.

[0114] To sum up, in the embodiments of the present application, through interference coordination between cells, when the overall load of the cell is high and the working mode of the RRU needs to be switched to the second mode of high performance and low power efficiency, the difficulty of the neighboring cell to enter the second mode can be increased, and the interference of the neighboring cell to the cell can be reduced, thereby increasing the downlink capacity of the cell and improving the downlink air interface performance of the cell, further improving the user perception effect.

[0115] Figure 6 A schematic diagram showing a base station system structure provided by an exemplary embodiment of the present application is shown in FIG. Figure 6As shown, the base station system 600 includes a MAC layer scheduling module 610, a downlink baseband processing module 620 and a radio frequency module 630; wherein the MAC layer scheduling module 610 is used to evaluate the downlink congestion level and detect the existence status of the target service, and determine the working mode of the RRU; the determined working mode of the RRU is sent to the downlink baseband processing module 620 through configuration information, and accordingly, the downlink baseband processing module 620 receives the configuration information from the MAC layer scheduling module, and adjusts the working state of each transmitting port based on the working mode of the RRU indicated by the configuration information to ensure optimal transmission efficiency; the downlink baseband processing module sends the working mode of the RRU to the radio frequency module 630 through the configuration information, and accordingly, the radio frequency module 630 performs power on and off of the power amplifier on the corresponding port according to the acquired working mode of the RRU; through the coordination of the various modules in the above-mentioned base station system, the multi-antenna information transmission method provided in the present application can be implemented.

[0116] The embodiment of the present application also provides a network device, which may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (RAN), a radio access network function, or a radio access network unit. The access network device may include a base station, a WLAN access point, or a WiFi node, etc. In the embodiment of the present application, the network device may be implemented as a management device on the base station side.

[0117] Figure 7 is a block diagram of a network device provided by an exemplary embodiment of the present application, such as Figure 7 As shown, the network device 700 includes: an antenna 701, a radio frequency device 702, a baseband device 703, a processor 704 and a memory 705. The antenna 701 is connected to the radio frequency device 702. In the uplink direction, the radio frequency device 702 receives information through the antenna 701 and sends the received information to the baseband device 703 for processing. In the downlink direction, the baseband device 703 processes the information to be sent and sends it to the radio frequency device 702, and the radio frequency device 702 processes the received information and sends it out through the antenna 701.

[0118] The baseband device 703 may include, for example, at least one baseband board on which a plurality of chips are arranged. Figure 7 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 705 through a bus interface to call the program in the memory 705 to execute the network device operations shown in the above method embodiment.

[0119] The network device may further include a network interface 706, which is, for example, a Common Public Radio Interface (CPRI).

[0120] Specifically, the network device 700 of the embodiment of the present application further includes: instructions or programs stored in the memory 705 and executable on the processor 704, and the processor 704 calls the instructions or programs in the memory 705 to execute. Figure 6 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0121] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned multi-antenna information transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0122] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0123] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned multi-antenna information transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0124] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned multi-antenna information transmission method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0125] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims.

[0126] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A multi-antenna information transmission method, characterized in that: The method comprises: Detecting the downlink congestion level of the radio remote unit RRU and the existence status of the detection target service to obtain the detection result; Determine the working mode of the RRU based on the detection result; wherein each transmitting port of the RRU is in a different working state under different working modes; Information is sent to the terminal side through the determined working mode of the RRU.

2. The method according to claim 1, characterized in that The determining the working mode of the RRU based on the detection result includes: When the detection result indicates that the duration of downlink non-congestion does not exceed the first duration threshold and the target service does not exist, some transmitting ports of the RRU are enabled, and the unenabled transmitting ports are set to a silent state, and correspondingly, the working mode of the RRU is determined to be the first mode; the silent state refers to a state in which the RRU is not working and the power amplifier is powered on; When the detection result indicates that there is downlink congestion or there is a target service, the number of transmission ports enabled by the RRU is increased, and correspondingly, the working mode of the RRU is determined to be a second mode; the number of transmission ports enabled in the second mode is greater than the number of transmission ports enabled in the first mode; When the detection result indicates that the duration of downlink uncongestion exceeds the first duration threshold and the target service does not exist, some transmitting ports of the RRU are enabled, and the unenabled transmitting ports are set to the shutdown state. Correspondingly, the working mode of the RRU is determined to be the third mode; the shutdown state refers to a state in which the RRU is not working and the power amplifier is powered off.

3. The method according to claim 2, characterized in that The detecting the downlink congestion level of the RRU includes: Obtaining the congestion duration required for the RRU to send the information cache on the base station side to the terminal side; When the congestion duration is greater than or equal to the first congestion duration threshold, determining that downlink congestion exists; When the congestion duration is less than the first congestion duration threshold, it is determined that the downlink is not congested.

4. The method according to claim 3, characterized in that The detecting the existence status of the target service includes: When the current service is within the specified service range and the modulation and coding scheme MCS index value corresponding to the base station side is lower than the index value threshold, determining that the target service exists; When the current service is not within the specified service range, or the modulation and coding scheme MCS index value corresponding to the base station side is higher than or equal to the index value threshold, it is determined that the target service does not exist.

5. The method according to claim 2, characterized in that: After determining the working mode of the RRU to be the second mode, the method further includes: When it is determined that the duration of downlink non-congestion is within a preset time interval and meets the target condition, some transmitting ports of the RRU are enabled, and the unenabled transmitting ports are set to a silent state, and correspondingly, the working mode of the RRU is switched to the first mode; wherein the upper limit of the preset time interval is the first duration threshold, and the target condition includes: the target service does not exist and the duration of sending information through the second mode is greater than the second duration threshold; When it is determined that the downlink uncongested duration is greater than the first duration threshold and meets the target condition, some transmission ports of the RRU are enabled, and the unenabled transmission ports are set to the shutdown state. Correspondingly, the working mode of the RRU is switched to the third mode.

6. The method according to claim 2, characterized in that The method further comprises: When the information sending time of the RRU is within the target time range, some transmission ports of the RRU are enabled, and the unenabled transmission ports are set to the shutdown state, and correspondingly, the working mode of the RRU is determined to be the third mode.

7. The method according to claim 6, characterized in that After determining the working mode of the RRU to be the third mode, the method further includes: Obtaining a congestion duration required for the RRU to send the information buffer on the base station side to the terminal side; When it is detected that the congestion duration is greater than the second congestion duration threshold or there is a target service, the number of transmission ports enabled by the RRU is increased, and correspondingly, the working mode of the RRU is switched to the second mode.

8. The method according to claim 4, characterized in that The method further comprises: Acquire a downlink comprehensive congestion degree of a target cell corresponding to the base station side; the downlink comprehensive congestion degree is used to indicate a load degree of the target cell; Determining a load level of the target cell based on the downlink comprehensive congestion degree; When the load level of the target cell is higher than the level threshold, a first notification message is sent to a neighboring cell of the target cell to instruct the neighboring cell to perform at least one of the following operations through the first notification message: increase the value of the first congestion duration threshold and increase the index value threshold.

9. The method according to claim 8, characterized in that The determining the load level of the target cell based on the downlink comprehensive congestion degree includes: When the target congestion duration exceeds the second threshold duration threshold and the downlink comprehensive congestion of the target cell is greater than the congestion threshold, it is determined that the load level of the target cell is higher than the level threshold; the target congestion duration is the congestion duration required for the target cell to send the most recent information.

10. The method according to claim 8, characterized in that The method further comprises: When receiving the second notification information sent by the neighboring cell, perform at least one of the following operations based on the second notification information: increase the value of the first congestion duration threshold and increase the index value threshold; the second notification information is used to indicate that the load level of the neighboring cell is higher than the level threshold.

11. A network device, characterized in that: It comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the multi-antenna information transmission method as described in any one of claims 1 to 10 is implemented.

12. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the multi-antenna information transmission method according to any one of claims 1 to 10 is implemented.

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