Signal processing method and apparatus

Abstract

The application provides a signal processing method and device, and solves the problem that the bottom noise is lifted in the existing multi-point PICO remote combining mode under RHUB. The method of the application embodiment comprises: acquiring sounding reference signals (SRS) received by multiple physical PICOs, wherein each SRS corresponds to a terminal; determining the physical PICO to which each SRS corresponds; and sending the uplink signal of the terminal to a baseband processing unit (BBU) according to the physical PICO to which the terminal belongs. According to the physical PICO to which the terminal belongs, all uplink signals of the terminal can be combined on the corresponding physical PICO by RHUB, and noise lifting caused by direct combination of all physical PICOs can be avoided.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a signal processing method and apparatus. Background Technology

[0002] Cell consolidation refers to the process in mobile communication systems, particularly in indoor distribution systems or high-speed scenarios, where the coverage radius of each Radio Remote Unit (RRU) is relatively small. Terminal movement leads to frequent cell reselection and handover, severely impacting communication quality. The solution is to expand the cell's coverage area. Cell consolidation utilizes optical fiber to combine the baseband signals of RRUs installed at different base station sites into a single physical cell via a Base Unit (BBU), thus expanding the cell's coverage. The benefits of cell consolidation include: reduced handover frequency, lower call drop rate, reduced neighbor cell relationships, and the ability to selectively adjust the network structure within a single logical cell, allowing for more flexible network expansion and coverage.

[0003] In 5G distributed indoor scenarios, a multi-picoe node approach based on Remote Radio Unit Hub (RHUB) merging is adopted. This approach achieves cell merging gain while reducing RRU overhead. The multi-point PICO remote merging method under the RHUB reduces product costs. However, in this scenario, because the PICOs at multiple points are merged by directly adding time-domain or frequency-domain signals, the merged signal will result in an increase in noise floor. Summary of the Invention

[0004] The purpose of this application is to provide a signal processing method and apparatus to solve the problem of increased noise floor caused by the existing multi-point PICO remote combining method under RHUB.

[0005] To achieve the above objectives, this application provides a signal processing method executed by a remote radio frequency hub (RHUB), wherein the RHUB corresponds to a logical pico base station (PICO), and the logical PICO corresponds to multiple physical PICOs. The method includes:

[0006] Acquire the detection reference signals (SRS) received through the plurality of physical PICOs, wherein each SRS corresponds to a terminal;

[0007] Determine the physical PICO to which the terminal belongs for each of the SRS;

[0008] Based on the physical PICO to which the terminal belongs, the uplink signal of the terminal is sent to the baseband processing unit (BBU).

[0009] Optionally, determining the physical PICO to which each terminal corresponding to the SRS belongs includes:

[0010] The SRS received by the multiple physical PICOs are sent to the baseband processing unit (BBU) according to a preset polling strategy. The preset polling strategy includes: sending the SRS on a physical PICO corresponding to the logical PICO to the BBU in each SRS cycle of the polling period. The polling period includes M SRS cycles, where M is the number of physical PICOs corresponding to the logical PICO.

[0011] Obtain the first indication information sent by the BBU, the first indication information being used to indicate the physical PICO to which each terminal corresponding to the SRS belongs.

[0012] Optionally, the step of sending the SRS transmitted by the multiple physical PICOs to the baseband processing unit (BBU) according to a preset polling strategy includes:

[0013] In the i-th SRS cycle, the SRS on the physical PICO numbered P(n, x) is transmitted to the BBU, where i is a positive integer;

[0014] Where x = mod(i, M), i = ceil(Tframe ÷ Tsrs), Tframe represents the radio frame index, Tsrs represents the SRS period, and n represents the number of the logical PICO corresponding to the physical PICO.

[0015] Optionally, determining the physical PICO to which each terminal corresponding to the SRS belongs includes:

[0016] The SRS received by each of the plurality of physical PICOs is measured to determine the signal quality value corresponding to the SRS received by each of the plurality of physical PICOs.

[0017] If the signal quality value corresponding to the SRS received by the first physical PICO among the plurality of physical PICOs is greater than a first preset threshold, then it is determined that the terminal corresponding to the SRS belongs to the first physical PICO.

[0018] Optionally, the step of sending the uplink signal of the terminal to the baseband processing unit (BBU) according to the physical PICO to which the terminal belongs includes:

[0019] Based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs, determine the resource configuration table corresponding to each physical PICO among the plurality of physical PICOs;

[0020] According to the resource configuration table corresponding to each physical PICO, the signals on the physical PICO to which the target terminal belongs are merged and sent to the BBU. The signals on the physical PICO to which the target terminal belongs include the uplink signals of the target terminal.

[0021] In the configuration resources corresponding to the resource configuration table, the resources occupied by the target terminal correspond to the first identifier, and the resources not occupied by the target terminal correspond to the second identifier.

[0022] Optionally, determining the resource configuration table corresponding to each physical PICO among the plurality of physical PICOs based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs includes:

[0023] Send the physical PICO to which the target terminal for data transmission and reception in each time slot belongs to the BBU;

[0024] Obtain the resource configuration table sent by the BBU based on the physical PICO to which the target terminal belongs.

[0025] Optionally, the method in this application embodiment further includes:

[0026] The resource configuration table is updated at each scheduling time unit.

[0027] Optionally, the step of merging and sending signals from the physical PICO to which the target terminal belongs to the BBU according to the resource configuration table corresponding to each physical PICO includes:

[0028] Based on the resource configuration table corresponding to each physical PICO, determine the target configuration resource corresponding to the first identifier in the target resource configuration table, wherein the target resource configuration table is the resource configuration table corresponding to the physical PICO to which the target terminal belongs;

[0029] The signals on the target configuration resource are merged and sent to the BBU.

[0030] This application embodiment also provides a signal processing method, executed by a baseband processing unit (BBU), wherein the BBU is connected to a backhaul unit (RHUB), the RHUB corresponds to at least one logical PICO, and each of the at least one logical PICO corresponds to multiple physical PICOs, the method comprising:

[0031] Receive the Sound Reference Signal (SRS) sent by RHUB;

[0032] Based on the SRS, determine the physical PICO to which the terminal belongs for each SRS.

[0033] Optionally, the method in this application embodiment further includes:

[0034] Send a first indication message to the RHUB, the first indication message being used to indicate the physical PICO to which each terminal corresponding to the SRS belongs.

[0035] Optionally, before determining the physical PICO to which the terminal corresponding to each SRS belongs based on the SRS, the method further includes:

[0036] Obtain the SRS sent by the RHUB according to a preset polling strategy, wherein the preset polling strategy includes: in each SRS cycle of the polling period, sending the SRS on a physical PICO corresponding to the logical PICO to the BBU, wherein the polling period includes M SRS cycles, and M is the number of physical PICOs corresponding to the logical PICO.

[0037] Optionally, determining the physical PICO to which the terminal corresponding to each SRS belongs based on the SRS includes:

[0038] The SRS of each logical PICO transmission is measured to determine the signal quality value corresponding to the SRS of each logical PICO transmission.

[0039] If the signal quality value corresponding to the SRS transmitted by the first logical PICO in the at least one logical PICO is greater than the second preset threshold, then it is determined that the terminal corresponding to the SRS belongs to the first logical PICO.

[0040] According to the preset polling strategy, the target physical PICO corresponding to the first SRS cycle is determined;

[0041] The terminal corresponding to the SRS is determined to belong to the target physical PICO of the first logical PICO.

[0042] Optionally, in the i-th SRS cycle, the target physical PICO is numbered P(n, x);

[0043] Where x = mod(i, M)), i = ceil(Tframe ÷ Tsrs), Tframe represents the current radio frame index, Tsrs represents the SRS period, n represents the logical PICO number corresponding to the target physical PICO, and i is a positive integer.

[0044] Optionally, after determining the physical PICO to which each terminal corresponding to the SRS belongs, the method further includes:

[0045] Based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs, determine the resource configuration table corresponding to each physical PICO among the plurality of physical PICOs;

[0046] In the configuration resources corresponding to the resource configuration table, the resources occupied by the target terminal correspond to the first identifier, and the resources not occupied by the target terminal correspond to the second identifier.

[0047] Optionally, after determining the resource configuration table corresponding to each physical PICO, the method further includes:

[0048] Send the resource configuration table corresponding to each physical PICO to the RHUB.

[0049] This application embodiment also provides a signal processing device applied to a radio frequency remote hub (RHUB), wherein the RHUB corresponds to a logical pico base station (PICO) and the logical PICO corresponds to multiple physical PICOs, and the device includes a memory, a transceiver, and a processor.

[0050] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0051] The transceiver acquires the detection reference signals (SRS) received through the plurality of physical PICOs, wherein each SRS corresponds to a terminal; the physical PICO to which the terminal to which each SRS belongs is determined; and the uplink signal of the terminal is sent to the baseband processing unit (BBU) through the transceiver based on the physical PICO to which the terminal belongs.

[0052] Optionally, the processor performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs, including:

[0053] The transceiver receives the SRS from the multiple physical PICOs and sends them to the baseband processing unit (BBU) according to a preset polling strategy. The preset polling strategy includes sending the SRS on a physical PICO corresponding to the logical PICO to the BBU in each SRS cycle of the polling period. The polling period includes M SRS cycles, where M is the number of physical PICOs corresponding to the logical PICO.

[0054] The transceiver obtains the first indication information sent by the BBU, which is used to indicate the physical PICO to which each terminal corresponding to the SRS belongs.

[0055] Optionally, the step of transmitting the SRS of multiple physical PICOs via a transceiver to the baseband processing unit (BBU) according to a preset polling strategy includes:

[0056] In the i-th SRS cycle, the SRS on the physical PICO numbered P(n, x) is transmitted to the BBU, where i is a positive integer;

[0057] Where x = mod(i, M), i = ceil(Tframe ÷ Tsrs), Tframe represents the radio frame index, Tsrs represents the SRS period, and n represents the number of the logical PICO corresponding to the physical PICO.

[0058] Optionally, the processor performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs, including:

[0059] The SRS received by each of the plurality of physical PICOs is measured to determine the signal quality value corresponding to the SRS received by each of the plurality of physical PICOs.

[0060] If the signal quality value corresponding to the SRS received by the first physical PICO among the plurality of physical PICOs is greater than a first preset threshold, then it is determined that the terminal corresponding to the SRS belongs to the first physical PICO.

[0061] Optionally, the processor performs the step of transmitting the uplink signal of the terminal to the baseband processing unit (BBU) via a transceiver according to the physical PICO to which the terminal belongs, including:

[0062] Based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs, determine the resource configuration table corresponding to each physical PICO among the plurality of physical PICOs;

[0063] According to the resource configuration table corresponding to each physical PICO, the signals on the physical PICO to which the target terminal belongs are merged and sent to the BBU. The signals on the physical PICO to which the target terminal belongs include the uplink signals of the target terminal.

[0064] In the configuration resources corresponding to the resource configuration table, the resources occupied by the target terminal correspond to the first identifier, and the resources not occupied by the target terminal correspond to the second identifier.

[0065] Optionally, the processor performs the step of determining the resource configuration table corresponding to each of the plurality of physical PICOs based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs, including:

[0066] The transceiver sends the physical PICO to which the target terminal for data transmission and reception in each time slot belongs to the BBU.

[0067] The BBU obtains the resource configuration table sent by the transceiver based on the physical PICO to which the target terminal belongs.

[0068] Optionally, the processor is further configured to:

[0069] The resource configuration table is updated at each scheduling time unit.

[0070] Optionally, the processor performs the step of combining and transmitting signals from the physical PICO to which the target terminal belongs to the BBU via a transceiver, according to the resource configuration table corresponding to each physical PICO, including:

[0071] Based on the resource configuration table corresponding to each physical PICO, determine the target configuration resource corresponding to the first identifier in the target resource configuration table, wherein the target resource configuration table is the resource configuration table corresponding to the physical PICO to which the target terminal belongs;

[0072] The signals on the target configuration resource are merged and sent to the BBU via a transceiver.

[0073] This application embodiment also provides a signal processing device applied to a baseband processing unit (BBU). The BBU is connected to an RHUB, and the RHUB corresponds to at least one logical PICO. Each logical PICO in the at least one logical PICO corresponds to multiple physical PICOs. The device includes a memory, a transceiver, and a processor.

[0074] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0075] Receive the Sound Reference Signal (SRS) sent by RHUB;

[0076] Based on the SRS, determine the physical PICO to which the terminal belongs for each SRS.

[0077] Optionally, the processor is further configured to:

[0078] The transceiver sends a first indication message to the RHUB, the first indication message being used to indicate the physical PICO to which each terminal corresponding to the SRS belongs.

[0079] Optionally, before the processor determines the physical PICO to which the terminal corresponding to each SRS belongs based on the SRS, it further includes:

[0080] Obtain the SRS sent by the RHUB according to a preset polling strategy, wherein the preset polling strategy includes: in each SRS cycle of the polling period, sending the SRS on a physical PICO corresponding to the logical PICO to the BBU, wherein the polling period includes M SRS cycles, and M is the number of physical PICOs corresponding to the logical PICO.

[0081] Optionally, the processor performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs based on the SRS, including:

[0082] The SRS of each logical PICO transmission is measured to determine the signal quality value corresponding to the SRS of each logical PICO transmission.

[0083] If the signal quality value corresponding to the SRS transmitted by the first logical PICO in the at least one logical PICO is greater than the second preset threshold, then it is determined that the terminal corresponding to the SRS belongs to the first logical PICO.

[0084] According to the preset polling strategy, the target physical PICO corresponding to the first SRS cycle is determined;

[0085] The terminal corresponding to the SRS is determined to belong to the target physical PICO of the first logical PICO.

[0086] Optionally, in the i-th SRS cycle, the target physical PICO is numbered P(n, x);

[0087] Where x = mod(i, M)), i = ceil(Tframe ÷ Tsrs), Tframe represents the current radio frame index, Tsrs represents the SRS period, n represents the logical PICO number corresponding to the target physical PICO, and i is a positive integer.

[0088] Optionally, after the processor performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs, it is further configured to perform the following steps:

[0089] Based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs, determine the resource configuration table corresponding to each physical PICO among the plurality of physical PICOs;

[0090] In the configuration resources corresponding to the resource configuration table, the resources occupied by the target terminal correspond to the first identifier, and the resources not occupied by the target terminal correspond to the second identifier.

[0091] Optionally, after the processor performs the step of determining the resource configuration table corresponding to each physical PICO, it is further configured to perform the following steps:

[0092] The resource configuration table corresponding to each physical PICO is sent to the RHUB via a transceiver.

[0093] This application embodiment also provides a signal processing apparatus applied to a radio frequency remote hub (RHUB), wherein the RHUB corresponds to a logical pico base station (PICO), and the logical PICO corresponds to multiple physical PICOs. The apparatus includes:

[0094] The first acquisition unit is used to acquire the detection reference signal SRS received by the plurality of physical PICOs, wherein each SRS corresponds to a terminal;

[0095] The first determining unit is used to determine the physical PICO to which the terminal corresponding to each SRS belongs;

[0096] The first transmission unit is used to send the uplink signal of the terminal to the baseband processing unit (BBU) according to the physical PICO to which the terminal belongs.

[0097] This application embodiment also provides a signal processing apparatus applied to a baseband processing unit (BBU), wherein the BBU is connected to a backhaul unit (RHUB), the RHUB corresponds to at least one logical PICO, and each of the at least one logical PICO corresponds to multiple physical PICOs. The apparatus includes:

[0098] The first receiving unit is used to receive the probe reference signal SRS sent by the RHUB;

[0099] The second determining unit is used to determine the physical PICO to which the terminal belongs for each SRS based on the SRS.

[0100] This application also provides a processor-readable storage medium storing program instructions for causing the processor to perform the steps of the signal processing method described above.

[0101] The above-mentioned technical solution of this application has at least the following beneficial effects:

[0102] In the above-described scheme of this application embodiment, a probe reference signal (SRS) transmitted through multiple physical PICOs is obtained, wherein each SRS corresponds to a terminal; the physical PICO to which the terminal belongs is determined for each SRS. In this way, based on the physical PICO to which the terminal belongs, all uplink signals of the terminal can be RHUB-combined only on the corresponding physical PICO, which can avoid the noise increase caused by directly combining all physical PICOs. Attached Figure Description

[0103] Figure 1 A block diagram illustrating a wireless communication system to which embodiments of this application may be applied;

[0104] Figure 2 One of the flowcharts illustrating a signal processing method according to an embodiment of this application;

[0105] Figure 3 This diagram illustrates the relationship between BBU and RHUB in the embodiments of this application.

[0106] Figure 4 This is a schematic diagram showing the display of the resource configuration table in an embodiment of this application;

[0107] Figure 5 A second schematic flowchart illustrating the signal processing method according to an embodiment of this application;

[0108] Figure 6 A structural block diagram illustrating the signal processing apparatus according to an embodiment of this application;

[0109] Figure 7 One of the schematic diagrams of a signal processing apparatus according to an embodiment of this application;

[0110] Figure 8 This is a second schematic diagram of a signal processing device according to an embodiment of this application. Detailed Implementation

[0111] The technical solutions provided in this application can be applied to various systems, especially 5G systems. For example, applicable systems include Global System for Mobile communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE) systems (including TD-LTE and FDD-LTE), Long Term Evolution Advanced (LTE-A), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), and 5G New Radio (NR). All of these systems include terminal equipment and network equipment. The system may also include a core network component, such as the Evolved Packet System (EPS) or the 5G system (5GS / 5GC).

[0112] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 can also be referred to as a terminal device or user equipment (UE). The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), or other terminal-side devices. Wearable devices include wristbands, headphones, glasses, etc. It should be noted that this application does not limit the specific type of terminal 11. Network device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0113] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0114] like Figure 2 As shown in the embodiment of this application, a signal processing method is provided, executed by a radio frequency remote hub (RHUB). The RHUB corresponds to a logical pico base station (PICO), and the logical PICO corresponds to multiple physical PICOs. The method includes:

[0115] Step 201: Acquire the probe reference signal (SRS) received through multiple physical PICOs, wherein each SRS corresponds to a terminal.

[0116] In this embodiment, RHUB obtains time-domain data from multiple physical PICOs and then performs a Fast Fourier Transform (FFT) to transform it into frequency-domain data; or, RHUB directly obtains frequency-domain data from multiple physical PICOs.

[0117] like Figure 3 As shown, multiple PICO time-frequency domain data are transmitted to the RHUB. The RHUB performs digital signal merging on the time / frequency domain digital signals of the corresponding channels of multiple PICOs before transmitting them to the BBU side for processing. Multiple RHUBs can be cascaded. The PICO input to the RHUB is defined as a physical PICO, and the output after merging is named a logical PICO. Assume the logical PICO is named P(n), where n is the index, n = 1…N, and N is the number of logical PICOs. The logical PICO inputs M physical PICOs, each named P(n,m), where m ranges from 1 to M, and M is the number of physical PICOs input to each logical PICO.

[0118] For example, such as Figure 3 As shown, the above method is executed by RHUB1, so RHUB1 can obtain the SRS of the physical PICO transmissions numbered P(1,m), P(2,m), P(3,m) and P(4,m).

[0119] Step 202: Determine the physical PICO to which the terminal corresponding to each SRS belongs.

[0120] In this application, the RHUB first performs SRS transmission in the physical PICO corresponding to each logical PICO, without directly performing RHUB merging, and determines the physical PICO to which the terminal corresponding to each SRS belongs based on the transmitted SRS. For example, the physical PICO to which the terminal corresponding to each SRS belongs is determined based on the SRS receiving power, so that the signal can be sent to the BBU based on this in the future.

[0121] Step 203: Based on the physical PICO to which the terminal belongs, send the uplink signal of the terminal to the BBU.

[0122] In this application, based on the physical PICO to which the terminal belongs, all uplink signals of the terminal are combined on the corresponding physical PICO and sent to the BBU, which can avoid the noise increase caused by directly combining all PICOs.

[0123] For example, assuming that the physical PICO to which UE1 belongs is labeled P(1,1), if only UE1 sends uplink signals, then if RHUB merging is directly performed to merge the signals transmitted by physical PICOs from P(1,1) to P(1,M), it will lead to an increase in noise floor. However, in this embodiment, the physical PICO to which UE1 belongs is first determined to be P(1,1), and all uplink signals of UE1 are merged only on the corresponding physical PICO. That is, only the uplink data of P(1,1) is sent to the BBU, without merging the signals on other physical PICOs, thereby effectively reducing noise.

[0124] The signal processing method of this application embodiment acquires a probe reference signal (SRS) transmitted through multiple physical PICOs, wherein each SRS corresponds to a terminal; and determines the physical PICO to which the terminal to which each SRS belongs. In this way, based on the physical PICO to which the terminal belongs, all uplink signals of the terminal can be RHUB-combined only on the corresponding physical PICO, which can avoid the noise increase caused by directly combining all physical PICOs.

[0125] As a first optional implementation, determining the physical PICO to which each terminal corresponding to the SRS belongs includes:

[0126] The SRS received by the multiple physical PICOs are sent to the baseband processing unit (BBU) according to a preset polling strategy. The preset polling strategy includes: sending the SRS on a physical PICO corresponding to the logical PICO to the BBU in each SRS cycle of the polling period. The polling period includes M SRS cycles, where M is the number of physical PICOs corresponding to the logical PICO.

[0127] Obtain the first indication information sent by the BBU, the first indication information being used to indicate the physical PICO to which each terminal corresponding to the SRS belongs.

[0128] In this implementation, the BBU notifies the RHUB of the time-frequency location and period of the SRS of all users. SRS with the same period can be provided with a unified time-frequency location. If the SRS periods of all users are consistent, only one set of time-frequency configuration information needs to be provided. At the same time, the signals of time-frequency resources with the same SRS period are uniformly polled. If the SRS periods are inconsistent, the SRS of users with the same period are processed as a group, and the groups are independent and the processing principle is the same.

[0129] Optionally, in this implementation, the SRS transmitted by the multiple physical PICOs are sent to the baseband processing unit (BBU) according to a preset polling strategy, including:

[0130] In the i-th SRS cycle, the SRS on the physical PICO numbered P(n, x) is transmitted to the BBU, where i is a positive integer;

[0131] Where x = mod(i, M), i = ceil(Tframe ÷ Tsrs), Tframe represents the current radio frame index, Tsrs represents the SRS period, and n represents the logical PICO number corresponding to the physical PICO. Tframe and Tsrs have the same unit, which can be the number of slots, milliseconds, the number of radio frames, etc.

[0132] In a specific embodiment of this application, if an SRS exists in the current slot, the time-frequency location data of the SRS is extracted and transmitted to the BBU in a polling manner. The specific polling strategy is as follows:

[0133] For all users' SRS in the i-th SRS cycle, only the signal at the physical PICO number P(n, mod(i, M)) is transmitted to the BBU; that is:

[0134] In the first SRS cycle, all users' SRS only transmits the signal on the physical PICO number P(n,1) to the BBU;

[0135] In the second SRS cycle, all users' SRS only transmits the signal on the physical PICO number P(n,2) to the BBU;

[0136] ...;

[0137] For all users in the Mth SRS cycle, the SRS only transmits the signal on the physical PICO number P(n,M) to the BBU;

[0138] For all users' SRS in the M+1th SRS cycle, only the signal on the physical PICO number P(n,1) is transmitted to the BBU.

[0139] ...

[0140] The specific polling process can be achieved by calculating the value of x in the current time P(n,x), and then transmitting the current time SRS to the BBU on P(n,x).

[0141] For example, at the first moment, RHUB1 will Figure 3The signals transmitted by P(1,1), P(2,1), P(3,1) and P(4,1) are merged. At the second time, RHUB1 merges the signals transmitted by P(1,2), P(2,2), P(3,2) and P(4,2). At the third time, RHUB1 merges the signals transmitted by P(1,3), P(2,3), P(3,3) and P(4,3), and so on. At the eighth time, RHUB1 merges the signals transmitted by P(1,8), P(2,3), P(3,8) and P(4,8).

[0142] Then, the BBU parses the SRS to determine which logical PICO the terminal's SRS belongs to, thereby determining the corresponding physical PICO. Specifically, after receiving the SRS signal transmitted by the logical PICO number P(n) (n=1……N), the BBU determines the UE's physical PICO affiliation by judging which logical PICO the UE's SRS belongs to. The parsing method can be to measure the SRS Received Reference Power (RSRP) or SNR of each user after SRS channel estimation, and then compare it with a given threshold. If the threshold is exceeded, the user is considered to belong to the physical PICO of this polling under that logical PICO.

[0143] It should be noted that in this embodiment of the application, each logical PICO receives SRS information from only one physical PICO at a time, so that the logical PICO and the physical PICO are in one-to-one correspondence at any given time, thereby distinguishing the ownership of the physical PICO of the end user.

[0144] After determining the physical PICO information to which the terminal belongs, the BBU can transmit it to the RHUB, which will then generate a resource configuration table. Alternatively, the BBU can generate a resource configuration table based on the physical PICO to which the terminal belongs, combined with the user scheduling information on each time-frequency resource, and send the resource configuration table to the RHUB.

[0145] As a second optional implementation, determining the physical PICO to which each terminal corresponding to the SRS belongs includes:

[0146] The SRS received by each of the plurality of physical PICOs is measured to determine the signal quality value corresponding to the SRS received by each of the plurality of physical PICOs.

[0147] If the signal quality value corresponding to the SRS received by the first physical PICO among the plurality of physical PICOs is greater than a first preset threshold, then it is determined that the terminal corresponding to the SRS belongs to the first physical PICO.

[0148] The aforementioned signal quality may include SNR, RSRP, etc.

[0149] In this implementation, the RHUB itself determines the physical PICO to which each terminal corresponding to an SRS belongs. Specifically, the BBU notifies the RHUB of the time-frequency location and period of the SRS for all users. The RHUB extracts the SRS frequency domain data from each physical PICO P(n,m), then calculates channel estimation to obtain the SRS received power or SNR for each user. The specific channel estimation scheme is based on existing technology. Then, it determines whether the SRS received power or SNR of each user exceeds a given threshold. If it does, the user belongs to the corresponding physical PICO.

[0150] Optionally, in this implementation, after the RHUB determines the physical PICO to which the terminal corresponding to each SRS belongs, it can generate a resource configuration table based on the physical PICO to which the terminal belongs, or it can send the physical PICO to which the terminal corresponding to each SRS belongs to the BBU, and the BBU generates a resource configuration table, and then the BBU transmits the resource configuration table to the RHUB.

[0151] Optionally, in this embodiment of the application, sending the uplink signal of the terminal to the BBU according to the physical PICO to which the terminal belongs includes:

[0152] Based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs, determine the resource configuration table corresponding to each physical PICO among the plurality of physical PICOs;

[0153] According to the resource configuration table corresponding to each physical PICO, the signals on the physical PICO to which the target terminal belongs are merged and sent to the BBU. The signals on the physical PICO to which the target terminal belongs include the uplink signals of the target terminal.

[0154] In the configuration resources corresponding to the resource configuration table, the resources occupied by the target terminal correspond to the first identifier, and the resources not occupied by the target terminal correspond to the second identifier.

[0155] The target terminal can send and receive data via PUSCH and / or PUCCH. Preferably, the first identifier is 1 and the second identifier is 0; however, the first identifier can also be 0 and the second identifier can be 1.

[0156] In this embodiment, the RHUB itself can determine the resource configuration table corresponding to each physical PICO based on the physical PICO to which the terminal belongs; alternatively, the RHUB can send the physical PICO to which the terminal belongs to the BBU and obtain the resource configuration table sent by the BBU.

[0157] Optionally, based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs, a resource configuration table corresponding to each of the plurality of physical PICOs is determined, including:

[0158] Send the physical PICO to which the target terminal for data transmission and reception in each time slot belongs to the BBU;

[0159] Obtain the resource configuration table sent by the BBU based on the physical PICO to which the target terminal belongs.

[0160] Optionally, the method in this application embodiment further includes:

[0161] The resource configuration table is updated at each scheduling time unit.

[0162] The aforementioned scheduling time unit can be a time slot.

[0163] Optionally, based on the resource configuration table corresponding to each physical PICO, the signals on the physical PICO to which the target terminal belongs are merged and sent to the BBU, including:

[0164] Based on the resource configuration table corresponding to each physical PICO, determine the target configuration resource corresponding to the first identifier in the target resource configuration table, wherein the target resource configuration table is the resource configuration table corresponding to the physical PICO to which the target terminal belongs;

[0165] The signals on the target configuration resource are merged and sent to the BBU.

[0166] Here, if the application is to reduce noise during uplink receive merging, this resource configuration table guides the merging operation between physical PICOs within the RHUB. Each physical PICO has a resource configuration table, with occupied resources marked as 1 and unoccupied resources marked as 0. This table can be updated once per scheduling time unit (e.g., per time slot).

[0167] In one embodiment of this application, for a given uplink time slot, the BBU knows the actual resource configuration of all users' PUSCH / PUCCH, but may not know the physical PICO affiliation of all users. Therefore, during the random access process, the UE has not yet configured SRS and can only determine the RSRP or SNR of the PRACH on each virtual PICO by parsing the Physical Random Access Channel (PRACH) and comparing it with a given threshold to determine the virtual PICO index where the PRACH is located. Then, the uplink signal of the user is summed up under all physical PICO data in the logical PICO (which can also be described as virtual PICO).

[0168] When parsing PRACH, since SRS is not yet available, the user's physical PICO affiliation cannot be determined. Therefore, all physical PICOs are merged using RHUB to ensure that the PRACH signal is not lost. Specifically, the corresponding time-frequency position in the resource configuration table for the PRACH is set to 1 for all physical PICOs. If there are no scheduled time-frequency resources, the corresponding time-frequency position for all physical PICOs is set to 0.

[0169] Specifically, each physical PICO index P(n,m) corresponds to a resource configuration table, with a table size of PRB*14, and the table value is 0 or 1. The element in the k-th row and l-th column of the table is represented as T(n,m,k,l), where k is the k-th PRB, l is the l-th symbol, 1≤l≤14, and 1≤k≤K.

[0170] Assume the set of all users at the current moment is ψ = {μ} i}, 1≤i≤UE_Num, where the number of users who know the physical PICO affiliation is Λ={μ i}, 1≤i≤UE_pico, UE_pico≤UE_Num, (ψ-Λ) is the set of users whose physical PICO affiliation is unknown.

[0171] The following describes the method for generating the resource table T(n, m, k, l) of P(n, m):

[0172] (1) Initialize table T(n, m, k, l) = 0;

[0173] (2) The frequency domain resources (k,l) occupied by all users' PUSCH / PUCCH under physical P(n,m) are set to T(n,m,k,l)=1;

[0174] (3) The frequency domain resources (k,l) occupied by the user set (Ψ-Λ) whose physical PICO is not determined under logic P(n) are set to T(n,m,k,l)=1.

[0175] The following is a simple example to illustrate this. There are 3 users under BBU, of which UE1 and UE2 exist under P(n,m).

[0176] like Figure 4 As shown, the PUSCH PRB occupied by UE1 is set to 1 in the P(n,m) resource configuration table, the PUCCH PRB occupied by UE2 is set to 1 in the P(n,m) resource configuration table, UE3 does not occupy P(n,m) resources, and the corresponding position is set to 0, and the remaining time and frequency resource positions are not scheduled, and the corresponding positions are all configured to 0.

[0177] Additionally, in this embodiment, if the scenario involves powering up by shutting down physical PICOs during downlink transmission, another resource configuration table can be generated according to the above scheme. This resource configuration table guides the transmission signal operation between physical PICOs within the RHUB. Each physical PICO has a resource configuration table. Resources occupied by broadcast signals, CSI-RS, PDSCH, and PDCCH are marked as 1, while resources not occupied by broadcast signals, CSI-RS, PDSCH, and PDCCH are marked as 0. This table is transmitted from the BBU to the RHUB and updated once per scheduling time unit (e.g., per time slot).

[0178] In the scenario where physical PICOs are turned off for energy saving during downlink transmission, the target resource corresponding to the first identifier in each resource configuration table can be determined according to the resource configuration table corresponding to each physical PICO, and a signal can be sent on the target resource.

[0179] For a given downlink time slot, the BBU knows the actual resource configuration of all users' PDSCH / PDCCH, but may not know the physical PICO affiliation of all users. Therefore, for UEs whose physical PICO affiliation is uncertain, the only way to avoid raising the noise floor is to add up all physical PICO data under the logical PICO determined in the PRACH stage.

[0180] For time-frequency resources such as broadcast signals, the configuration table of the corresponding time-frequency position for all physical PICOs is set to 1 at the time of transmission on all physical PICOs. For time-frequency resources that are not scheduled, the configuration table of the corresponding time-frequency position for all physical PICOs is set to 0.

[0181] In this embodiment, for uplink reception, the RHUB determines the combining method for the corresponding time-frequency position on each physical PICO according to the resource configuration table, and performs RHUB combining. Assuming that logical PICO P(n) corresponds to physical PICO P(n,m), the frequency domain data is represented as S(rx,n,m,k,l), and the combined channel data is S(rx,n,k,l). That is, for data channels where T(n,m,k,l) ​​= 1, the data is added together during combining to obtain all frequency domain data within a logical pico.

[0182] For downlink transmission, RHUB determines the transmission mode for the corresponding time-frequency location on each physical PICO based on the resource configuration table and then transmits the signal. Assuming a logical PICO P(n) corresponds to a physical PICO P(n,m), the frequency domain data is multiplied by the resource configuration table of each physical PICO to obtain the transmission signal for each physical PICO. That is, the signal is transmitted only on the frequency domain resources marked as 1. If all the corresponding identifiers for the resources in the configuration table of a physical PICO are 0, then the corresponding physical PICO can be turned off, and its transmission power is 0.

[0183] The signal processing method of this application embodiment acquires a probe reference signal (SRS) transmitted through multiple physical PICOs, wherein each SRS corresponds to a terminal; determines the physical PICO to which the terminal to which each SRS belongs. Thus, based on the physical PICO to which the terminal belongs, all uplink signals of the terminal can be combined by RHUB only on the corresponding physical PICO and sent to the BBU, which can avoid the noise increase caused by directly combining all PICOs. Alternatively, all downlink signals of the terminal can be transmitted downlink only on the corresponding physical PICO, which can save power and meet energy-saving requirements.

[0184] like Figure 5 As shown in the embodiment of this application, a signal processing unit is also provided, executed by a baseband processing unit (BBU). The BBU is connected to a backhaul unit (RHUB), and the RHUB corresponds to at least one logical PICO. Each logical PICO in the at least one logical PICO corresponds to multiple physical PICOs. The method includes:

[0185] Step 501: Receive the probe reference signal SRS sent by RHUB.

[0186] Step 502: Determine the physical PICO to which the terminal belongs for each SRS based on the SRS.

[0187] In this embodiment, the RHUB obtains time-domain data from multiple physical PICOs and then performs a Fast Fourier Transform (FFT) to transform it into frequency-domain data; alternatively, the RHUB directly obtains frequency-domain data from multiple physical PICOs. The RHUB then transmits the acquired data to the BBU. Here, each SRS corresponds to one terminal.

[0188] In this embodiment of the application, the physical PICO to which the terminal belongs is determined according to the probe reference signal SRS sent by the RHUB, so that the RHUB can perform RHUB merging of all uplink signals of the terminal only on the corresponding physical PICO according to the physical PICO to which the terminal belongs, thereby avoiding the noise increase caused by directly merging all physical PICOs.

[0189] Optionally, the method in this application embodiment further includes:

[0190] Send a first indication message to the RHUB, the first indication message being used to indicate the physical PICO to which each terminal corresponding to the SRS belongs.

[0191] Here, the aforementioned first indication information can directly include the content of the physical PICO to which the terminal corresponding to each SRS belongs, or it can indirectly indicate the physical PICO to which the terminal corresponding to each SRS belongs. For example, the aforementioned first indication information can be a resource configuration table, which indicates the physical PICO to which the terminal corresponding to each SRS belongs. Each physical PICO corresponds to a resource configuration table. In the configuration resources corresponding to the resource configuration table, the resources occupied by the first terminal correspond to a first identifier, and the resources occupied by the second terminal correspond to a second identifier. The first terminal includes: terminals belonging to the physical PICO, and / or terminals whose belonging to the physical PICO is not determined under the logical PICO corresponding to the physical PICO. The second terminal includes terminals that do not belong to the physical PICO.

[0192] In this embodiment, based on the probe reference signal (SRS) sent by the RHUB, the physical PICO to which the terminal belongs for each SRS is determined, and a first indication information is sent to the RHUB. The first indication information is used to indicate the physical PICO to which the terminal belongs for each SRS. In this way, through the first indication information, the RHUB can perform RHUB merging of all uplink signals of the terminal only on the corresponding physical PICO, based on the physical PICO to which the terminal belongs, thus avoiding the noise increase caused by directly merging all PICOs.

[0193] Optionally, before determining the physical PICO to which the terminal corresponding to each SRS belongs based on the SRS, the method further includes:

[0194] Obtain the SRS sent by the RHUB according to a preset polling strategy, wherein the preset polling strategy includes: in each SRS cycle of the polling period, sending the SRS on a physical PICO corresponding to the logical PICO to the BBU, wherein the polling period includes M SRS cycles, and M is the number of physical PICOs corresponding to the logical PICO.

[0195] Optionally, based on the SRS, determining the physical PICO to which the terminal corresponding to each SRS belongs includes:

[0196] The SRS of each logical PICO transmission is measured to determine the signal quality value corresponding to the SRS of each logical PICO transmission.

[0197] If the signal quality value corresponding to the SRS transmitted by the first logical PICO in the at least one logical PICO is greater than the second preset threshold, then it is determined that the terminal corresponding to the SRS belongs to the first logical PICO.

[0198] According to the preset polling strategy, the target physical PICO corresponding to the first SRS period is determined; the first SRS period may specifically be the current SRS period;

[0199] The terminal corresponding to the SRS is determined to belong to the target physical PICO of the first logical PICO.

[0200] In the i-th SRS cycle, the target physical PICO is numbered P(n, x);

[0201] Where x = mod(i, M)), i = ceil(Tframe ÷ Tsrs), Tframe represents the current radio frame index, Tsrs represents the SRS period, n represents the logical PICO number corresponding to the target physical PICO, and i is a positive integer.

[0202] Optionally, after determining the physical PICO to which the terminal corresponding to each SRS belongs, the method further includes:

[0203] Based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs, determine the resource configuration table corresponding to each physical PICO among the plurality of physical PICOs;

[0204] In the configuration resources corresponding to the resource configuration table, the resources occupied by the target terminal correspond to the first identifier, and the resources not occupied by the target terminal correspond to the second identifier.

[0205] Optionally, after determining the resource configuration table corresponding to each physical PICO, the following is also included:

[0206] Send the resource configuration table corresponding to each physical PICO to the RHUB.

[0207] It should be noted that the specific interaction process between BBU and RHUB has been described in detail in the above embodiments, and will not be repeated here.

[0208] In this embodiment of the application, the physical PICO to which the terminal belongs is determined according to the probe reference signal SRS transmitted by the RHUB, so that the RHUB can subsequently combine all uplink signals of the terminal only on the corresponding physical PICO based on the physical PICO to which the terminal belongs, thus avoiding the noise increase caused by directly combining all physical PICOs.

[0209] like Figure 6 As shown, this application provides a signal processing device applied to a radio frequency remote hub (RHUB). The RHUB corresponds to a logical pico base station (PICO), and the logical PICO corresponds to multiple physical PICOs. The device includes a memory 620, a transceiver 600, and a processor 610.

[0210] The memory 620 is used to store computer programs; the transceiver 600 is used to send and receive data under the control of the processor 610; the processor 610 is used to read the computer program in the memory and perform the following operations:

[0211] The transceiver acquires the detection reference signals (SRS) received through the plurality of physical PICOs, wherein each SRS corresponds to a terminal; the physical PICO to which the terminal to which each SRS belongs is determined; and the uplink signal of the terminal is sent to the baseband processing unit (BBU) through the transceiver based on the physical PICO to which the terminal belongs.

[0212] Optionally, the processor 610 performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs, including:

[0213] The transceiver 600 receives the SRS from the plurality of physical PICOs and sends them to the baseband processing unit (BBU) according to a preset polling strategy. The preset polling strategy includes: in each SRS cycle of the polling period, sending the SRS on a physical PICO corresponding to the logical PICO to the BBU. The polling period includes M SRS cycles, where M is the number of physical PICOs corresponding to the logical PICO.

[0214] The transceiver 600 obtains the first indication information sent by the BBU, which is used to indicate the physical PICO to which each terminal corresponding to the SRS belongs.

[0215] Optionally, the transceiver 600 transmits the SRS received by the multiple physical PICOs to the baseband processing unit (BBU) according to a preset polling strategy, including:

[0216] In the i-th SRS cycle, the SRS on the physical PICO numbered P(n, x) is transmitted to the BBU, where i is a positive integer;

[0217] Where x = mod(i, M), i = ceil(Tframe ÷ Tsrs), Tframe represents the current radio frame index, Tsrs represents the SRS period, and n represents the number of the logical PICO corresponding to the physical PICO.

[0218] Optionally, the processor 610 performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs, including:

[0219] The SRS received by each of the plurality of physical PICOs is measured to determine the signal quality value corresponding to the SRS received by each of the plurality of physical PICOs.

[0220] If the signal quality value corresponding to the SRS received by the first physical PICO among the plurality of physical PICOs is greater than a first preset threshold, then it is determined that the terminal corresponding to the SRS belongs to the first physical PICO.

[0221] Optionally, the processor 610 performs the step of transmitting the uplink signal of the terminal to the baseband processing unit (BBU) via a transceiver according to the physical PICO to which the terminal belongs, including:

[0222] Based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs, determine the resource configuration table corresponding to each physical PICO among the plurality of physical PICOs;

[0223] According to the resource configuration table corresponding to each physical PICO, the signals on the physical PICO to which the target terminal belongs are merged and sent to the BBU. The signals on the physical PICO to which the target terminal belongs include the uplink signals of the target terminal.

[0224] In the configuration resources corresponding to the resource configuration table, the resources occupied by the target terminal correspond to the first identifier, and the resources not occupied by the target terminal correspond to the second identifier.

[0225] Optionally, the processor 610 performs the step of determining the resource configuration table corresponding to each of the plurality of physical PICOs based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs, including:

[0226] The transceiver sends the physical PICO to which the target terminal for data transmission and reception in each time slot belongs to the BBU.

[0227] The BBU obtains the resource configuration table sent by the transceiver based on the physical PICO to which the target terminal belongs.

[0228] Optionally, the processor is further configured to:

[0229] The resource configuration table is updated at each scheduling time unit.

[0230] Optionally, the processor 610 performs the step of combining and transmitting signals from the physical PICO to which the target terminal belongs to the BBU via a transceiver, according to the resource configuration table corresponding to each physical PICO, including:

[0231] Based on the resource configuration table corresponding to each physical PICO, determine the target configuration resource corresponding to the first identifier in the target resource configuration table, wherein the target resource configuration table is the resource configuration table corresponding to the physical PICO to which the target terminal belongs;

[0232] The signals on the target configuration resource are merged and sent to the BBU via a transceiver.

[0233] Among them, Figure 6 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (processor 610) and memory (memory 620). The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 600 can be multiple elements, including transmitters and receivers, providing units for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. The processor 610 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 610 during operation.

[0234] The processor 610 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

[0235] It should be noted that the apparatus provided in this application embodiment can implement all the method steps implemented in the above-described signal processing method embodiment applied to RHUB, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0236] This application also provides a signal processing device applied to a baseband processing unit (BBU). The BBU is connected to a backband UB, and the RHUB corresponds to at least one logical PICO. Each logical PICO corresponds to multiple physical PICOs. A schematic diagram of its structure can be found [reference needed]. Figure 6 The device includes a memory, a transceiver, and a processor;

[0237] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0238] Receive the probe reference signal (SRS) sent by the RHUB through the transceiver;

[0239] Based on the SRS, determine the physical PICO to which the terminal belongs for each SRS.

[0240] Optionally, the processor is further configured to:

[0241] The transceiver sends a first indication message to the RHUB, the first indication message being used to indicate the physical PICO to which each terminal corresponding to the SRS belongs.

[0242] Optionally, before the processor determines the physical PICO to which the terminal corresponding to each SRS belongs based on the SRS, it further includes:

[0243] The transceiver obtains the SRS sent by the RHUB according to a preset polling strategy, wherein the preset polling strategy includes: in each SRS cycle of the polling period, sending the SRS on a physical PICO corresponding to the logical PICO to the BBU, wherein the polling period includes M SRS cycles, and M is the number of physical PICOs corresponding to the logical PICO.

[0244] Optionally, the processor performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs based on the SRS, including:

[0245] The SRS of each logical PICO transmission is measured to determine the signal quality value corresponding to the SRS of each logical PICO transmission.

[0246] If the signal quality value corresponding to the SRS transmitted by the first logical PICO in the at least one logical PICO is greater than the second preset threshold, then it is determined that the terminal corresponding to the SRS belongs to the first logical PICO.

[0247] According to the preset polling strategy, the target physical PICO corresponding to the first SRS cycle is determined;

[0248] The terminal corresponding to the SRS is determined to belong to the target physical PICO of the first logical PICO.

[0249] Optionally, in the i-th SRS cycle, the target physical PICO is numbered P(n, x);

[0250] Where x = mod(i, M)), i = ceil(Tframe ÷ Tsrs), Tframe represents the current radio frame index, Tsrs represents the SRS period, n represents the logical PICO number corresponding to the target physical PICO, and i is a positive integer.

[0251] Optionally, after the processor performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs, it is further configured to perform the following steps:

[0252] Based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs, determine the resource configuration table corresponding to each physical PICO among the plurality of physical PICOs;

[0253] In the configuration resources corresponding to the resource configuration table, the resources occupied by the target terminal correspond to the first identifier, and the resources not occupied by the target terminal correspond to the second identifier.

[0254] Optionally, after the processor performs the step of determining the resource configuration table corresponding to each physical PICO, it is further configured to perform the following steps:

[0255] The resource configuration table corresponding to each physical PICO is sent to the RHUB via a transceiver.

[0256] It should be noted that the apparatus provided in this application embodiment can implement all the method steps implemented in the above-described signal processing method embodiment applied to the baseband processing unit (BBU) and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0257] like Figure 7The present application also provides a signal processing apparatus for use in a radio frequency remote hub (RHUB), wherein the RHUB corresponds to a logical pico base station (PICO), and the logical PICO corresponds to multiple physical PICOs. The apparatus includes:

[0258] The first acquisition unit 701 is used to acquire the detection reference signal SRS received by the plurality of physical PICOs, wherein each SRS corresponds to a terminal;

[0259] The first determining unit 702 is used to determine the physical PICO to which the terminal corresponding to each SRS belongs;

[0260] The first transmission unit 703 is used to send the uplink signal of the terminal to the baseband processing unit (BBU) according to the physical PICO to which the terminal belongs.

[0261] Optionally, the first determining unit includes:

[0262] The first transmission subunit is used to send the SRS received by the plurality of physical PICOs to the baseband processing unit (BBU) according to a preset polling strategy. The preset polling strategy includes: sending the SRS on a physical PICO corresponding to the logical PICO to the BBU in each SRS cycle of the polling period. The polling period includes M SRS cycles, where M is the number of physical PICOs corresponding to the logical PICO.

[0263] The first acquisition subunit is used to acquire the first indication information sent by the BBU, the first indication information being used to indicate the physical PICO to which each terminal corresponding to the SRS belongs.

[0264] Optionally, the first transmission subunit is used to transmit the SRS on the physical PICO numbered P(n, x) to the BBU in the i-th SRS cycle, where i is a positive integer;

[0265] Where x = mod(i, M), i = ceil(Tframe ÷ Tsrs), Tframe represents the current radio frame index, Tsrs represents the SRS period, and n represents the number of the logical PICO corresponding to the physical PICO.

[0266] Optionally, the first determining unit includes:

[0267] The first processing subunit is used to measure the SRS received by each of the plurality of physical PICOs and determine the signal quality value corresponding to the SRS received by each of the plurality of physical PICOs.

[0268] The first determining subunit is configured to determine that the terminal corresponding to the SRS belongs to the first physical PICO if the signal quality value corresponding to the SRS received by the first physical PICO among the plurality of physical PICOs is greater than a first preset threshold.

[0269] Optionally, the first transmission unit includes:

[0270] The second determining subunit is used to determine the resource configuration table corresponding to each physical PICO among the plurality of physical PICOs, based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs;

[0271] The second transmission subunit is used to merge and send the signals on the physical PICO to which the target terminal belongs to the BBU according to the resource configuration table corresponding to each physical PICO. The signals on the physical PICO to which the target terminal belongs include the uplink signals of the target terminal.

[0272] In the configuration resources corresponding to the resource configuration table, the resources occupied by the target terminal correspond to the first identifier, and the resources not occupied by the target terminal correspond to the second identifier.

[0273] Optionally, the second determining subunit is used for:

[0274] Send the physical PICO to which the target terminal for data transmission and reception in each time slot belongs to the BBU;

[0275] Obtain the resource configuration table sent by the BBU based on the physical PICO to which the target terminal belongs.

[0276] Optionally, the apparatus in this application embodiment further includes:

[0277] An update unit is used to update the resource configuration table at each scheduling time unit.

[0278] Optionally, the first transmission unit includes:

[0279] The third determining subunit is used to determine the target configuration resource corresponding to the first identifier in the target resource configuration table according to the resource configuration table corresponding to each physical PICO, wherein the target resource configuration table is the resource configuration table corresponding to the physical PICO to which the target terminal belongs;

[0280] The third transmission subunit is used to merge and send the signals on the target configuration resource to the BBU.

[0281] It should be noted that the apparatus provided in this application embodiment can implement all the method steps of the signal processing method embodiment executed by the radio frequency remote hub (RHUB) and achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0282] like Figure 8 As shown in the illustration, this application also provides a signal processing apparatus executed by a baseband processing unit (BBU). The BBU is connected to a backhaul unit (RHUB), and the RHUB corresponds to at least one logical PICO. Each logical PICO corresponds to multiple physical PICOs. The apparatus includes:

[0283] The first receiving unit 801 is used to receive the probe reference signal SRS sent by the RHUB;

[0284] The second determining unit 802 is used to determine the physical PICO to which each terminal corresponding to the SRS belongs, based on the SRS.

[0285] Optionally, the apparatus in this application embodiment further includes:

[0286] The second transmission unit is used to send first indication information to the RHUB, the first indication information being used to indicate the physical PICO to which each terminal corresponding to the SRS belongs.

[0287] Optionally, the apparatus in this application embodiment further includes:

[0288] The second acquisition unit is configured to acquire the SRS sent by the RHUB according to a preset polling strategy before the second determining unit determines the physical PICO to which the terminal corresponding to each SRS belongs based on the SRS. The preset polling strategy includes: sending the SRS on a physical PICO corresponding to the logical PICO to the BBU in each SRS cycle of the polling period. The polling period includes M SRS cycles, where M is the number of physical PICOs corresponding to the logical PICO.

[0289] Optionally, the second determining unit includes:

[0290] The fifth determining subunit is used to measure the SRS of each logical PICO transmission and determine the signal quality value corresponding to the SRS of each logical PICO transmission.

[0291] The sixth determining subunit is used to determine that the terminal corresponding to the SRS belongs to the first logical PICO if the signal quality value corresponding to the SRS transmitted by the first logical PICO in the at least one logical PICO is greater than a second preset threshold.

[0292] The seventh determining subunit is used to determine the target physical PICO corresponding to the first SRS cycle according to the preset polling strategy;

[0293] The eighth determining subunit is used to determine the target physical PICO to which the terminal corresponding to the SRS belongs.

[0294] Optionally, in the i-th SRS cycle, the target physical PICO is numbered P(n, x);

[0295] Where x = mod(i, M)), i = ceil(Tframe ÷ Tsrs), Tframe represents the current radio frame index, Tsrs represents the SRS period, and n represents the logical PICO number corresponding to the target physical PICO.

[0296] Optionally, the apparatus in this application embodiment further includes:

[0297] The third determining unit is used to determine the resource configuration table corresponding to each physical PICO among the plurality of physical PICOs, based on the physical PICO to which the target terminal for data transmission and reception in each time slot belongs;

[0298] In the configuration resources corresponding to the resource configuration table, the resources occupied by the target terminal correspond to the first identifier, and the resources not occupied by the target terminal correspond to the second identifier.

[0299] Optionally, the apparatus in this application embodiment further includes:

[0300] The third transmission unit is used to send the resource configuration table corresponding to each physical PICO to the RHUB after the third determining unit determines the resource configuration table corresponding to each physical PICO.

[0301] It should be noted that the apparatus provided in this application embodiment can implement all the method steps implemented by the signal processing method embodiment executed by the BBU, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0302] It should be noted that the division of units in the embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0303] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0304] In some embodiments of this application, a processor-readable storage medium is also provided, the processor-readable storage medium storing program instructions for causing the processor to perform the following steps:

[0305] Acquire the detection reference signals (SRS) received through the plurality of physical PICOs, wherein each SRS corresponds to a terminal;

[0306] Determine the physical PICO to which the terminal belongs for each of the SRS;

[0307] Based on the physical PICO to which the terminal belongs, the uplink signal of the terminal is sent to the baseband processing unit (BBU).

[0308] Alternatively, the program instructions are used to cause the processor to perform the following steps:

[0309] Receive the Probe Reference Signal (SRS) sent by the RHUB; determine the physical PICO to which the terminal corresponding to each SRS belongs based on the SRS.

[0310] When this program instruction is executed by the processor, it can implement all the implementation methods in the above signal processing method embodiments. To avoid repetition, it will not be described again here.

[0311] The terminal devices involved in the embodiments of this application can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in a 5G system, a terminal device can be called User Equipment (UE). Wireless terminal devices can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but this application embodiment does not limit the terminology.

[0312] The network device involved in this application embodiment can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, a base station may also be called an access point, or a device in an access network that communicates with a wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also coordinate the attribute management of the air interface. For example, the network equipment involved in the embodiments of this application can be a base transceiver station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a NodeB in a Wide-band Code Division Multiple Access (WCDMA) network, an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) system, a 5G base station (gNB) in a Next Generation System, a Home evolved Node B (HeNB), a relay node, a Femto, a Pico, etc., and is not limited in the embodiments of this application. In some network structures, the network equipment may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and distributed unit may be geographically separated.

[0313] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multiple-user MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0314] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0315] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0316] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0317] These processors can execute instructions that can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0318] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A signal processing method, executed by a remote radio frequency hub (RHUB), wherein the RHUB corresponds to a logical pico base station (PICO), and the logical PICO corresponds to multiple physical PICOs, characterized in that, The method comprises: acquiring sounding reference signals (SRS) received by the plurality of physical PICO, wherein each SRS corresponds to a terminal; determining a physical PICO to which each terminal corresponding to the SRS belongs; sending an uplink signal of the terminal to a baseband processing unit (BBU) according to the physical PICO to which the terminal belongs; the sending of the uplink signal of the terminal to the BBU according to the physical PICO to which the terminal belongs comprises: determining a resource configuration table corresponding to each physical PICO in the plurality of physical PICO according to a physical PICO to which a target terminal performing data transmission in each time slot belongs; sending signals on the physical PICO to which the target terminal belongs to the BBU according to the resource configuration table corresponding to each physical PICO, wherein the signals on the physical PICO to which the target terminal belongs include an uplink signal of the target terminal; wherein a resource occupied by the target terminal in a configuration resource corresponding to the resource configuration table corresponds to a first identifier, and a resource not occupied by the target terminal corresponds to a second identifier; the sending of the signals on the physical PICO to which the target terminal belongs to the BBU according to the resource configuration table corresponding to each physical PICO comprises: determining a target configuration resource corresponding to the first identifier in a target resource configuration table according to the resource configuration table corresponding to each physical PICO, wherein the target resource configuration table is a resource configuration table corresponding to the physical PICO to which the target terminal belongs; sending signals on the target configuration resource to the BBU.

2. The method of claim 1, wherein, The determination of the physical PICO to which each terminal corresponding to the SRS belongs comprises: sending the SRS received by the plurality of physical PICO to a baseband processing unit (BBU) according to a preset polling strategy, wherein the preset polling strategy comprises: in each SRS period of a polling period, sending SRS on one physical PICO corresponding to the logical PICO to the BBU, wherein the polling period comprises M SRS periods, and M is the number of physical PICO corresponding to the logical PICO; acquiring first indication information sent by the BBU, wherein the first indication information is used to indicate the physical PICO to which each terminal corresponding to the SRS belongs.

3. The method of claim 2, wherein, The sending of the SRS received by the plurality of physical PICO to the BBU according to the preset polling strategy comprises: in an i-th SRS period, transmitting SRS on a physical PICO numbered P(n, x) to the BBU, wherein i is a positive integer; wherein x = mod(i, M), i = ceil(Tframe ÷ Tsrs), Tframe represents a radio frame index, Tsrs represents an SRS period, and n represents the number of the logical PICO corresponding to the physical PICO.

4. The method of claim 1, wherein, The determination of the physical PICO to which each terminal corresponding to the SRS belongs comprises: measuring the SRS received by each of the plurality of physical PICO, to determine a signal quality value corresponding to the SRS received by each of the plurality of physical PICO; if the signal quality value corresponding to the SRS received by a first physical PICO of the plurality of physical PICO is greater than a first preset threshold, determining that the terminal corresponding to the SRS belongs to the first physical PICO.

5. The method of claim 1, wherein, The method comprises: sending the physical PICO to which the target terminal belongs in each time slot to the BBU; obtaining the resource configuration table sent by the BBU according to the physical PICO to which the target terminal belongs.

6. The method of claim 1, wherein, Further comprising: updating the resource configuration table in each scheduling time unit.

7. A signal processing method, executed by a baseband processing unit (BBU), wherein the BBU is connected to a backband hop (RHUB), the RHUB corresponds to at least one logical PICO, and each logical PICO corresponds to multiple physical PICOs, characterized in that, The method comprises: receiving the SRS sent by the RHUB; determining the physical PICO to which the terminal corresponding to each SRS belongs according to the SRS; receiving the uplink signal of the terminal sent by the RHUB, wherein the uplink signal of the terminal is sent according to the physical PICO to which the terminal belongs. The method comprises: receiving the signal on the physical PICO to which the target terminal belongs sent by the RHUB, wherein the signal on the physical PICO to which the target terminal belongs includes the uplink signal of the target terminal, the signal on the physical PICO to which the target terminal belongs is the signal on the target configuration resource, the target configuration resource is the resource corresponding to the first identifier in the target resource configuration table, and the target resource configuration table is the resource configuration table corresponding to the physical PICO to which the target terminal belongs. The resource in the configuration resource corresponding to the resource configuration table corresponding to the target terminal is occupied by the target terminal, and the resource not occupied by the target terminal corresponds to a second identifier.

8. The method of claim 7, wherein, Further comprising: sending the first indication information to the RHUB, wherein the first indication information is used to indicate the physical PICO to which the terminal corresponding to each SRS belongs.

9. The method of claim 7, wherein, Before determining the physical PICO to which the terminal corresponding to each SRS belongs according to the SRS, the method further comprises: obtaining the SRS sent by the RHUB according to a preset polling strategy, wherein the preset polling strategy comprises: in each SRS period of a polling period, sending the SRS on one physical PICO corresponding to the logical PICO to the BBU, the polling period comprises M SRS periods, and M is the number of physical PICO corresponding to the logical PICO.

10. The method of claim 9, wherein, The method comprises: measuring the SRS transmitted by each logical PICO to determine a signal quality value corresponding to the SRS transmitted by each logical PICO; measuring the SRS transmitted by each logical PICO to determine a signal quality value corresponding to the SRS transmitted by each logical PICO; If a signal quality value corresponding to the SRS transmitted by a first logical PICO of the at least one logical PICO is greater than a second preset threshold, it is determined that a terminal corresponding to the SRS belongs to the first logical PICO; According to the preset polling strategy, a target physical PICO corresponding to a first SRS period is determined; It is determined that the terminal corresponding to the SRS belongs to the target physical PICO of the first logical PICO.

11. The method of claim 10, wherein, In an ith SRS period, a target physical PICO corresponds to a number P(n, x); Wherein, x = mod(i, M), i = ceil(Tframe ÷ Tsrs), Tframe represents a current radio frame index, Tsrs represents an SRS period, n represents a number of a logical PICO corresponding to the target physical PICO, and i is a positive integer.

12. The method of claim 7, wherein, After determining the physical PICO to which each terminal corresponding to each SRS belongs, the method further includes: According to a physical PICO to which a target terminal belonging to each time slot performs data transceiving, a resource configuration table corresponding to each physical PICO of the plurality of physical PICO is determined; Wherein, a resource occupied by the target terminal in a configuration resource corresponding to the resource configuration table corresponds to a first identifier, and a resource not occupied by the target terminal corresponds to a second identifier.

13. The method of claim 12, wherein, After determining the resource configuration table corresponding to each physical PICO, the method further includes: The resource configuration table corresponding to each physical PICO is sent to the RHUB.

14. A signal processing apparatus applied to a radio remote head (RRHUB), the RRHUB corresponding to a logical pico (PICO), the logical PICO corresponding to a plurality of physical PICOs, the signal processing apparatus comprising: a first processor configured to: receive a first signal from a first PICO of the plurality of physical PICOs; and transmit a second signal to a second PICO of the plurality of physical PICOs; and a second processor configured to: receive a third signal from the first PICO; and transmit a fourth signal to the second PICO. The apparatus includes a memory, a transceiver, and a processor; The memory is configured to store a computer program; The transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations: Obtaining, by the transceiver, a sounding reference signal (SRS) received through the plurality of physical PICO, wherein each SRS corresponds to a terminal; determining a physical PICO to which each terminal corresponding to each SRS belongs; and transmitting, by the transceiver, an uplink signal of the terminal to a baseband processing unit (BBU) according to the physical PICO to which the terminal belongs; Wherein, the processor performs the step of transmitting, by the transceiver, the uplink signal of the terminal to the BBU according to the physical PICO to which the terminal belongs, including: According to a physical PICO to which a target terminal belonging to each time slot performs data transceiving, a resource configuration table corresponding to each physical PICO of the plurality of physical PICO is determined; According to the resource configuration table corresponding to each physical PICO, a signal on the physical PICO to which the target terminal belongs is transmitted to the BBU, wherein the signal on the physical PICO to which the target terminal belongs includes an uplink signal of the target terminal; Wherein, a resource occupied by the target terminal in a configuration resource corresponding to the resource configuration table corresponds to a first identifier, and a resource not occupied by the target terminal corresponds to a second identifier. The processor performs the step of sending, by the transceiver, signals on the target physical PICO to which the target terminal belongs to the BBU according to the resource configuration table corresponding to each physical PICO, and the step includes: According to the resource configuration table corresponding to each physical PICO, determining the target configuration resource corresponding to the first identifier in the target resource configuration table, the target resource configuration table being the resource configuration table corresponding to the physical PICO to which the target terminal belongs; The processor performs the step of sending, by the transceiver, signals on the target physical PICO to which the target terminal belongs to the BBU according to the resource configuration table corresponding to each physical PICO, and the step includes:

15. The apparatus of claim 14, wherein, The processor performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs, and the step includes: The transceiver sends the SRS received by the plurality of physical PICO to the baseband processing unit BBU according to a preset polling strategy, wherein the preset polling strategy includes: in each SRS period of a polling period, sending the SRS on one physical PICO corresponding to the logical PICO to the BBU, the polling period includes M SRS periods, and M is the number of physical PICO corresponding to the logical PICO; The transceiver obtains first indication information sent by the BBU, and the first indication information is used to indicate the physical PICO to which the terminal corresponding to each SRS belongs.

16. The apparatus of claim 14, wherein, The transceiver sends the SRS received by the plurality of physical PICO to the baseband processing unit BBU according to a preset polling strategy, wherein the preset polling strategy includes: in each SRS period of a polling period, sending the SRS on one physical PICO corresponding to the logical PICO to the BBU, the polling period includes M SRS periods, and M is the number of physical PICO corresponding to the logical PICO; The transceiver sends the SRS received by the plurality of physical PICO to the baseband processing unit BBU according to a preset polling strategy, wherein the preset polling strategy includes: in each SRS period of a polling period, sending the SRS on one physical PICO corresponding to the logical PICO to the BBU, the polling period includes M SRS periods, and M is the number of physical PICO corresponding to the logical PICO; The processor performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs, and the step includes:

17. The apparatus of claim 14, wherein, The processor performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs, and the step includes: The processor performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs, and the step includes: The processor performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs, and the step includes:

18. The apparatus of claim 14, wherein, The transceiver sends the physical PICO to which the target terminal belongs in each time slot to the BBU; The transceiver obtains the resource configuration table sent by the BBU according to the physical PICO to which the target terminal belongs. The processor is further configured to:

19. The apparatus of claim 14, wherein, Update the resource configuration table in each scheduling time unit. The device includes a memory, a transceiver, and a processor; 20.A signal processing apparatus applied to a baseband processing unit (BBU), wherein the BBU is connected with an R-HUB, the R-HUB corresponds to at least one logical PICO, each of the at least one logical PICO corresponds to a plurality of physical PICO, and the signal processing apparatus is characterized in that, The memory is configured to store a computer program; ​ The transceiver is used for transceiving data under the control of the processor; the processor is used for reading the computer program in the memory and performing the following operations: Receiving a sounding reference signal (SRS) sent by the RHUB; According to the SRS, determining a physical PICO to which a terminal corresponding to each SRS belongs; Receiving an uplink signal of the terminal sent by the RHUB, wherein the uplink signal of the terminal is sent according to the physical PICO to which the terminal belongs; The processor performs the step of receiving the uplink signal of the terminal sent by the RHUB, including: Receiving a signal on a physical PICO to which a target terminal belongs sent by the RHUB, wherein the signal on the physical PICO to which the target terminal belongs includes the uplink signal of the target terminal, the signal on the physical PICO to which the target terminal belongs is a signal on a target configuration resource, the target configuration resource is a resource corresponding to a first identifier in a target resource configuration table, and the target resource configuration table is a resource configuration table corresponding to the physical PICO to which the target terminal belongs; The resource configuration table corresponds to a configuration resource, wherein a resource occupied by the target terminal corresponds to the first identifier, and a resource not occupied by the target terminal corresponds to a second identifier.

21. The apparatus of claim 20, wherein, The processor is further configured to: Sending first indication information to the RHUB through the transceiver, wherein the first indication information is used for indicating the physical PICO to which the terminal corresponding to each SRS belongs.

22. The apparatus of claim 20, wherein, Before the processor determines the physical PICO to which the terminal corresponding to each SRS belongs according to the SRS, the processor further includes: Obtaining the SRS sent by the RHUB according to a preset polling strategy, wherein the preset polling strategy includes: in each SRS period of a polling period, sending the SRS on one physical PICO corresponding to the logical PICO to the BBU, the polling period includes M SRS periods, and M is the number of the physical PICOs corresponding to the logical PICO.

23. The apparatus of claim 22, wherein, The processor performs the step of determining the physical PICO to which the terminal corresponding to each SRS belongs according to the SRS, including: Measuring the SRS transmitted by each logical PICO to determine a signal quality value corresponding to the SRS transmitted by each logical PICO; If a signal quality value corresponding to the SRS transmitted by a first logical PICO in the at least one logical PICO is greater than a second preset threshold, it is determined that the terminal corresponding to the SRS belongs to the first logical PICO; According to the preset polling strategy, determining a target physical PICO corresponding to a first SRS period; Determining that the terminal corresponding to the SRS belongs to the target physical PICO of the first logical PICO.

24. The apparatus of claim 23, wherein, In the ith SRS period, the target physical PICO corresponds to a number P(n, x); Wherein, x = mod(i, M), i = ceil(Tframe ÷ Tsrs), Tframe represents a current radio frame index, Tsrs represents an SRS period, n represents the number of the logical PICO corresponding to the target physical PICO, and i is a positive integer.

25. The apparatus of claim 20, wherein, The processor, after performing the step of determining the physical PICO to which each terminal corresponding to each SRS belongs, is further configured to perform the following steps: determining, according to the physical PICO to which a target terminal belongs, a resource configuration table corresponding to each physical PICO in the plurality of physical PICO, wherein the target terminal performs data transceiving in each time slot; wherein, in the configuration resource corresponding to the resource configuration table, a resource occupied by the target terminal corresponds to a first identifier, and a resource not occupied by the target terminal corresponds to a second identifier.

26. The apparatus of claim 25, wherein, The processor, after performing the step of determining the resource configuration table corresponding to each physical PICO, is further configured to perform the following steps: sending, by the transceiver, the resource configuration table corresponding to each physical PICO to the RHUB.

27. A signal processing apparatus for execution by a radio remote head (RRHUB) corresponding to a logical pico (PICO) corresponding to a plurality of physical PICOs, the apparatus comprising: means for receiving a first signal from a first physical PICO of the plurality of physical PICOs; means for receiving a second signal from a second physical PICO of the plurality of physical PICOs; means for combining the first signal and the second signal to generate a combined signal; and means for transmitting the combined signal to a base station. The apparatus comprises: a first acquisition unit configured to acquire a sounding reference signal (SRS) received by the plurality of physical PICO, wherein each SRS corresponds to a terminal; a first determination unit configured to determine the physical PICO to which each terminal corresponding to each SRS belongs; a first transmission unit configured to transmit, according to the physical PICO to which the terminal belongs, an uplink signal of the terminal to a baseband processing unit (BBU); wherein the first transmission unit comprises: a second determination subunit configured to determine, according to the physical PICO to which a target terminal belongs, a resource configuration table corresponding to each physical PICO in the plurality of physical PICO, wherein the target terminal performs data transceiving in each time slot; a second transmission subunit configured to transmit, according to the resource configuration table corresponding to each physical PICO, a signal on the physical PICO to which the target terminal belongs to the BBU, wherein the signal on the physical PICO to which the target terminal belongs comprises an uplink signal of the target terminal; wherein, in the configuration resource corresponding to the resource configuration table, a resource occupied by the target terminal corresponds to a first identifier, and a resource not occupied by the target terminal corresponds to a second identifier; wherein the first transmission unit comprises: a third determination subunit configured to determine, according to the resource configuration table corresponding to each physical PICO, a target configuration resource corresponding to the first identifier in a target resource configuration table, wherein the target resource configuration table is a resource configuration table corresponding to the physical PICO to which the target terminal belongs; a third transmission subunit configured to transmit, to the BBU, a signal on the target configuration resource. 28.A signal processing apparatus applied to a baseband processing unit (BBU), wherein the BBU is connected with an R-HUB, the R-HUB corresponds to at least one logical PICO, each of the at least one logical PICO corresponds to a plurality of physical PICO, and the signal processing apparatus is characterized in that, The apparatus comprises: a first reception unit configured to receive a sounding reference signal (SRS) sent by the RHUB; a second determination unit configured to determine, according to the SRS, the physical PICO to which each terminal corresponding to each SRS belongs; a second reception unit configured to receive an uplink signal of a terminal sent by the RHUB, wherein the uplink signal of the terminal is transmitted according to the physical PICO to which the terminal belongs; wherein the second reception unit is configured to: The target terminal belonging to a physical PICO receives a signal on the physical PICO, the signal including uplink signals of the target terminal, the signal on the physical PICO being a signal on target configuration resources, the target configuration resources being resources corresponding to the first identifier in a target resource configuration table, the target resource configuration table being a resource configuration table corresponding to the physical PICO to which the target terminal belongs; The resource configuration table corresponds to configuration resources, resources occupied by the target terminal correspond to the first identifier, and resources not occupied by the target terminal correspond to the second identifier.

29. A processor-readable storage medium, comprising: The processor readable storage medium stores program instructions for causing the processor to perform the steps of the signal processing method according to any one of claims 1 to 6, or the steps of the signal processing method according to any one of claims 7 to 13.

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