Signal processing method and apparatus, device, and storage medium

Abstract

Embodiments of the present application provide a signal processing method, device and equipment and storage medium, belonging to the technical field of communication, the method comprises: respectively performing delay processing on each first PICO signal in a first PICO signal set, and obtaining a second PICO signal corresponding to each first PICO signal respectively; merging the second PICO signal corresponding to each first PICO signal respectively to obtain a third PICO signal; obtaining a PICO signal to which a terminal belongs based on the third PICO signal; and merging the PICO signal to which the terminal belongs. The embodiments of the present application can avoid the bottom noise lifting caused by direct merging by performing delay processing on each first PICO signal in a first PICO signal set, then merging, and selecting the PICO signal to which the terminal belongs from the merged signal, and finally merging the PICO signal to which the terminal belongs.

Description

Technical Field

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

[0002] In a distributed indoor scenario, a hub can directly connect multiple Pico Radio Remote Units (picoRRUs) to form a distributed system, where multiple picoRRUs can simultaneously broadcast and receive signals from the same cell.

[0003] Due to the geographical differences in the distribution of various picoRRUs, when receiving uplink data sent by users, some picoRRUs can receive useful signals while others cannot. This leads to an increase in uplink noise floor after the HUB performs time-domain or frequency-domain signal combining of multiple picoRRUs. The increase in uplink noise floor may affect the number of picoRRUs that a single cell can support, thus limiting the coverage of distributed deployment of indoor small base stations.

[0004] Therefore, how to avoid the increase in noise floor caused by the HUB merging picoRRU signals has become an urgent problem to be solved. Summary of the Invention

[0005] To address the problems existing in the prior art, embodiments of this application provide a signal processing method, apparatus, device, and storage medium.

[0006] In a first aspect, embodiments of this application provide a signal processing method applied to a hub unit (HUB), comprising:

[0007] Each first PICO signal in the first PICO signal set is delayed to obtain a second PICO signal corresponding to each first PICO signal. Each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit PicoRRU connected to the hub unit HUB.

[0008] The second PICO signals corresponding to each first PICO signal are merged to obtain the third PICO signal;

[0009] Based on the third PICO signal, the PICO signal to which the terminal belongs is obtained, and the PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set.

[0010] Merge the PICO signals belonging to the terminal.

[0011] Optionally, according to a signal processing method of one embodiment of this application, each first PICO signal in the first PICO signal set is subjected to delay processing to obtain a second PICO signal corresponding to each PICO signal, including:

[0012] Determine the time-domain data carried by the probe reference signal (SRS) on each first PICO signal;

[0013] Delayed samples are added to the time-domain data carried by the probe reference signal SRS on each first PICO signal to obtain the second PICO signal corresponding to each first PICO signal.

[0014] Optionally, according to a signal processing method of one embodiment of this application, delay samples are added to the time-domain data carried by the probe reference signal SRS on each first PICO signal to obtain the second PICO signal corresponding to each first PICO signal, including any one of the following:

[0015] Add the target number of zeros before the cyclic prefix CP corresponding to the time-domain data carried by the probe reference signal SRS on each first PICO signal; or

[0016] The target number of zeros are added to the tail of the OFDM symbol corresponding to the time-domain data carried by the probe reference signal SRS on each first PICO signal;

[0017] Among them, the number of targets is less than or equal to the length of CP, and on any first PICO signal, the number of zeros added to the time domain data of the same SRS is different, while the number of zeros added to the time domain data of different SRS is the same.

[0018] Optionally, according to one embodiment of the signal processing method of this application, obtaining the PICO signal to which the terminal belongs based on the third PICO signal includes:

[0019] Send a third PICO signal to the baseband processing unit (BBU);

[0020] Receive the PICO signal of the terminal affiliation determined by the BBU based on the third PICO signal.

[0021] Optionally, according to a signal processing method of one embodiment of this application, merging the PICO signals belonging to the terminal includes:

[0022] Obtain the resource configuration table from the BBU;

[0023] Based on the resource configuration table, the PICO signals to which the terminal belongs are filtered;

[0024] The PICO signals obtained after filtering are merged.

[0025] Secondly, embodiments of this application also provide a signal processing method applied to a baseband processing unit (BBU), comprising:

[0026] The system receives a third PICO signal sent by the hub unit (HUB). The third PICO signal is obtained by merging multiple second PICO signals. Any one of the multiple second PICO signals is obtained by delaying a first PICO signal corresponding to that second PICO signal. The first PICO signal is any one of the first PICO signals in the set of first PICO signals.

[0027] Based on the third PICO signal, the PICO signal to which the terminal belongs is determined; the PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set, and each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit PicoRRU connected to the hub unit HUB.

[0028] Send the PICO signal indicating the terminal's affiliation to the HUB.

[0029] Optionally, according to one embodiment of the signal processing method of this application, determining the PICO signal to which the terminal belongs based on a third PICO signal includes:

[0030] The PICO signal to which the terminal belongs is determined based on the detection reference signal SRS on the third PICO signal.

[0031] Optionally, according to one embodiment of the signal processing method of this application, determining the PICO signal to which the terminal belongs based on the detection reference signal (SRS) on the third PICO signal includes:

[0032] Based on SRS, obtain the distribution of SRS signal path;

[0033] Based on the distribution of SRS signal paths, the PICO signal to which the terminal belongs is determined.

[0034] Optionally, according to one embodiment of the signal processing method of this application, determining the PICO signal to which the terminal belongs based on the distribution of the SRS signal path includes:

[0035] Based on the distribution of the SRS signal path, the mapping relationship between the first PICO signal and the SRS signal path is determined;

[0036] Based on the mapping relationship, the PICO signal to which the terminal belongs is determined.

[0037] Optionally, according to a signal processing method of one embodiment of this application, determining the mapping relationship between the first PICO signal and the SRS signal path based on the distribution of the SRS signal path includes:

[0038] Based on the distribution of SRS signal paths, determine the first SRS IRT value corresponding to each SRS signal path;

[0039] Based on the relationship between each first SRS IRT value and the number of delay samples corresponding to each first PICO signal when the delay processing is performed, the mapping relationship is determined.

[0040] Optionally, according to one embodiment of the signal processing method of this application, determining the mapping relationship between the first PICO signal and the SRS signal path based on the distribution of the SRS signal path includes:

[0041] Determine the DMRS IRT measurement value, and based on the distribution of SRS signal paths, determine the first SRS IRT value corresponding to each SRS signal path;

[0042] Based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path, determine the second SRS IRT value corresponding to each SRS signal path.

[0043] Based on the relationship between each second SRS IRT value and the number of delay samples corresponding to each first PICO signal when it is delayed, the mapping relationship is determined.

[0044] Optionally, according to a signal processing method of one embodiment of this application, determining a second SRS IRT value corresponding to each SRS signal path based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path includes:

[0045] Based on the DMRS IRT measurement value and the first SRS IRT value corresponding to the target SRS signal path among all SRS signal paths, determine the second SRS IRT value corresponding to the target SRS signal path.

[0046] Determine the second SRS IRT value corresponding to each SRS signal path.

[0047] Optionally, according to one embodiment of the signal processing method of this application, after determining the PICO signal to which the terminal belongs based on the third PICO signal, the method further includes:

[0048] Determine the time-domain resources corresponding to the PICO signal to which the terminal belongs;

[0049] Based on time-domain resources, a resource configuration table is generated.

[0050] Optionally, according to one embodiment of the signal processing method of this application, the method further includes:

[0051] Send the resource configuration table to the HUB.

[0052] Thirdly, embodiments of this application also provide a hub unit (HUB), including a memory, a transceiver, and a processor, wherein:

[0053] A memory is used to store computer programs; a transceiver is used to send and receive data under the control of a processor; and a processor is used to read the computer programs from the memory and implement the signal processing steps of the first aspect above.

[0054] Fourthly, embodiments of this application also provide a baseband processing unit (BBU), comprising: a memory, a transceiver, and a processor; wherein:

[0055] The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and implement the signal processing method described in the second aspect above.

[0056] Fifthly, embodiments of this application also provide a signal processing apparatus applied to a hub unit (HUB), comprising: a first acquisition unit, a second acquisition unit, a third acquisition unit, and a merging unit, wherein:

[0057] The first acquisition unit is used to perform delay processing on each first PICO signal in the first PICO signal set to acquire the second PICO signal corresponding to each first PICO signal. Each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit PicoRRU connected to the hub unit HUB.

[0058] The second acquisition unit is used to merge the second PICO signals corresponding to each first PICO signal to obtain the third PICO signal.

[0059] The third acquisition unit is used to acquire the PICO signal to which the terminal belongs based on the third PICO signal, wherein the PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set.

[0060] The merging unit is used to merge the PICO signals belonging to the terminal.

[0061] Sixthly, embodiments of this application also provide a signal processing apparatus applied to a baseband processing unit (BBU), comprising: a receiving unit, a determining unit, and a first transmitting unit, wherein:

[0062] The receiving unit is used to receive the third PICO signal sent by the hub unit HUB. The third PICO signal is obtained by merging multiple second PICO signals. Any one of the multiple second PICO signals is obtained by delaying the first PICO signal corresponding to the second PICO signal. The first PICO signal is any one of the first PICO signals in the set of first PICO signals.

[0063] The determining unit is used to determine the PICO signal to which the terminal belongs based on the third PICO signal; the PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set, and each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit PicoRRU connected to the hub unit HUB.

[0064] The first transmitting unit is used to send the PICO signal belonging to the terminal to the HUB.

[0065] In a seventh aspect, embodiments of this application also provide a processor-readable storage medium storing a computer program for causing the processor to perform the steps of the signal processing method of the first aspect above, or to perform the steps of the signal processing method of the second aspect above.

[0066] The signal processing method, apparatus, device, and storage medium provided in this application embodiment perform delay processing on each first PICO signal in the first PICO signal set and then merge them, and filter out the PICO signal to which the terminal belongs from the merged signal. Finally, the filtered PICO signals to which the terminal belongs are merged. This can avoid the defect of increased background noise caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area. Attached Figure Description

[0067] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0068] Figure 1 This is a structural diagram of an indoor distributed system provided by related technologies;

[0069] Figure 2 This is one of the flowcharts illustrating the signal processing method provided in the embodiments of this application;

[0070] Figure 3 This is a second schematic flowchart of the signal processing method provided in the embodiments of this application;

[0071] Figure 4 This is a schematic diagram of the structure of a hub unit (HUB) provided in an embodiment of this application;

[0072] Figure 5 This is a schematic diagram of the structure of a baseband processing unit (BBU) provided in an embodiment of this application;

[0073] Figure 6 This is one of the structural schematic diagrams of the signal processing device provided in the embodiments of this application;

[0074] Figure 7 This is a second schematic diagram of the signal processing device provided in the embodiments of this application. Detailed Implementation

[0075] In the embodiments of this application, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0076] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0077] 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.

[0078] 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) General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), 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 systems may also include a core network component, such as Evolved Packet System (EPS) and 5G systems (5GS).

[0079] 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 is not limited to these terms in the embodiments of this application.

[0080] 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) system, 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.

[0081] To facilitate a clearer understanding of the various embodiments of this application, some relevant background knowledge will be introduced as follows.

[0082] Indoor distributed scenarios are playing an increasingly important role in the numerous application scenarios of communication systems. For distributed indoor scenarios, a HUB can directly connect to multiple picoRRUs to form a distributed system. Multiple picoRRUs extend the coverage of indoor small base stations by simultaneously broadcasting and receiving signals from the same cell. This approach reduces the construction cost per unit area of ​​indoor coverage to some extent.

[0083] However, due to the geographical differences in the distribution of each picoRRU, when receiving uplink data sent by users, some picoRRUs can receive useful signals while others cannot. This leads to an increase in uplink noise floor after the HUB combines the time-domain or frequency-domain signals from multiple picoRRUs. This increase in uplink noise floor will seriously affect the number of picoRRUs that a single cell can support, limiting the coverage of distributed indoor small cell deployments. Therefore, there is an urgent need for new technical means to solve the problem of increased noise floor caused by HUB combining, so as to expand the coverage of a single cell and reduce the construction cost of indoor coverage.

[0084] Figure 1 This is a structural diagram of an indoor distributed system provided by related technologies, such as... Figure 1 As shown, taking a 5G distributed indoor scenario as an example, the 5G distributed indoor scenario system consists of a Building Baseband Unit (BBU), a signal combining unit (hub unit), and a picoRRU. The HUB and BBU can be directly connected via optical fiber, and the picoRRU and HUB can be directly connected via network cable or wired cable. Data exchange between the picoRRU and BBU is relayed through the HUB. Multiple picoRRUs can simultaneously receive uplink signals from the cell and directly combine them at the HUB, transmitting the combined signal from the HUB to the BBU. Signal combining can enhance indoor coverage and reduce the probability of user handover.

[0085] When time-domain or frequency-domain data from multiple picoRRUs are merged on a hub, it can lead to an increase in noise floor. The more picoRRUs are merged, the more pronounced the increase in noise floor becomes. This increase in noise floor will severely affect the number of picoRRUs that a single cell can support, thus limiting the coverage of distributed deployment of indoor small base stations. Therefore, a hub merging and noise reduction solution is urgently needed to overcome the existing defects in noise floor.

[0086] To overcome the above-mentioned defects, various embodiments of this application provide a signal processing method, apparatus, device, and storage medium.

[0087] Figure 2 This is one of the flowcharts illustrating the signal processing method provided in the embodiments of this application, such as... Figure 2 As shown, this application provides a signal processing method, the execution subject of which can be a hub unit (HUB). The method includes:

[0088] Step 201: Delay processing is performed on each first PICO signal in the first PICO signal set to obtain the second PICO signal corresponding to each first PICO signal. Each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit PicoRRU connected to the hub unit HUB.

[0089] Step 202: Merge the second PICO signals corresponding to each first PICO signal to obtain the third PICO signal;

[0090] Step 203: Based on the third PICO signal, obtain the PICO signal to which the terminal belongs. The PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set.

[0091] Step 204: Merge the PICO signals belonging to the terminal.

[0092] Specifically, in order to overcome the defect of increased noise floor caused by data merging on multiple picoRRUs in related technologies after HUB, in this embodiment, each first PICO signal in the first PICO signal set is delayed to obtain the second PICO signal corresponding to each first PICO signal. Then, all second PICO signals are merged to obtain a third PICO signal. Based on the third PICO signal, the PICO signal to which the terminal belongs is further filtered and obtained. Finally, the PICO signals to which the terminal belongs are merged. This can avoid the defect of increased noise floor caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0093] Optionally, the HUB can perform delay processing on each of the first PICO signals in the first PICO signal set to obtain the second PICO signal corresponding to each of the first PICO signals. Each of the first PICO signals in the first PICO signal set can come from different miniature remote radio units (PicoRRUs) connected to the hub unit HUB.

[0094] It is understandable that the second PICO signal is obtained by delaying the first PICO signal.

[0095] For example, there are 5 miniature remote radio units (PicoRRUs) in the cell. The first PICO signals received by each of the 5 PicoRRUs form a first PICO signal set, which can be represented as {PICO1, PICO2, PICO3, PICO4, PICO5}. The HUB can perform delay processing on each of the 5 first PICO signals in the first PICO signal set to obtain 5 second PICO signals {PICO1', PICO2', PICO3', PICO4', PICO5'} corresponding to the 5 first PICO signals.

[0096] It should be noted that the above examples are merely illustrative of the embodiments of this application and are not intended to limit the embodiments of this application.

[0097] Optionally, the data of each first PICO signal in the first PICO signal set can be transmitted via a single antenna or via multiple antennas.

[0098] Optionally, when transmitting the first PICO signal via multiple antennas, the HUB can perform the same delay processing on the data from each antenna in the same first PICO signal.

[0099] Optionally, when transmitting the first PICO signal via multiple antennas, the HUB can perform different delay processing on the data in different first PICO signals.

[0100] Optionally, the HUB can merge the second PICO signals corresponding to each first PICO signal in the first PICO signal set into a single signal to obtain the third PICO signal.

[0101] Optionally, the HUB can obtain the PICO signal to which the terminal belongs based on the third PICO signal, wherein the PICO signal to which the terminal belongs can be one or more first PICO signals from the first PICO signal set.

[0102] For example, the PICO signal to which the terminal belongs can be {PICO1}, or {PICO2}, or {PICO1, PICO2}, or {PICO2, PICO3, PICO4, PICO5} from the above five first PICO signals {PICO1, PICO2, PICO3, PICO4}, or any other combination of the five first PICO signals.

[0103] It should be noted that the above examples are merely illustrative of the embodiments of this application and are not intended to limit the embodiments of this application.

[0104] Optionally, the HUB can merge the PICO signals belonging to the terminal into a single signal and then transmit it to the BBU for processing.

[0105] The signal processing method provided in this application embodiment performs delay processing on each of the first PICO signals in the first PICO signal set and then merges them, and filters out the PICO signal to which the terminal belongs from the merged signals. Finally, the filtered PICO signals to which the terminal belongs are merged. This can avoid the defect of increased noise floor caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0106] Optionally, each of the first PICO signals in the first PICO signal set is subjected to delay processing to obtain a second PICO signal corresponding to each PICO signal, including:

[0107] Determine the time-domain data carried by the probe reference signal (SRS) on each first PICO signal;

[0108] Delayed samples are added to the time-domain data carried by the probe reference signal SRS on each first PICO signal to obtain the second PICO signal corresponding to each first PICO signal.

[0109] Specifically, after the HUB receives a first PICO signal set composed of first PICO signals sent by multiple PicoRRUs, the HUB can determine the time-domain data carried by the Sounding Reference Signal (SRS) on each first PICO signal in the first PICO signal set, and then add delay samples to the SRS time-domain data corresponding to each first PICO signal to obtain the second PICO signal corresponding to each first PICO signal.

[0110] Optionally, before the HUB determines the time-domain data carried by the SRS on each first PICO signal, it can obtain the location of the time-domain data transmitted on the SRS symbol from the BBU, and then extract the data transmitted at the time-domain location on the SRS symbol as the time-domain data carried by the SRS.

[0111] Optionally, the location of the time-domain data transmitted on the SRS symbol may include the location of the last two or the last four symbols within each slot.

[0112] Optionally, the HUB can add delay samples to the time-domain data carried by the SRS on each first PICO signal to obtain the second PICO signal corresponding to each first PICO signal.

[0113] Optionally, delay samples are added to the time-domain data carried by the probe reference signal SRS on each first PICO signal to obtain the second PICO signal corresponding to each first PICO signal, including any one of the following:

[0114] Add the target number of zeros before the cyclic prefix CP corresponding to the time-domain data carried by the probe reference signal SRS on each first PICO signal; or

[0115] The target number of zeros are added to the tail of the OFDM symbol corresponding to the time-domain data carried by the probe reference signal SRS on each first PICO signal;

[0116] Among them, the number of targets is less than or equal to the length of CP, and on any first PICO signal, the number of zeros added to the time domain data of the same SRS is different, while the number of zeros added to the time domain data of different SRS is the same.

[0117] Specifically, the method by which the HUB performs delay processing on the first PICO signal can include any of the following:

[0118] Method 1: The HUB adds N zeros before the cyclic prefix (CP) corresponding to the time-domain data carried or transmitted on the SRS symbol, and can also truncate the corresponding number of N samples at the end of the OFDM symbol (for example, adding 3 zeros before the CP can truncate 3 samples at the end of the OFDM symbol) to ensure that the length of the time-domain data transmitted on the SRS symbol remains unchanged, thereby avoiding system performance degradation caused by delay.

[0119] Method 2: The HUB adds N zeros to the end of the OFDM symbol corresponding to the time-domain data carried or transmitted on the SRS symbol, and can also truncate the corresponding number of N samples in the OFDM symbol header to ensure that the length of the time-domain data transmitted on the SRS symbol remains unchanged, thereby avoiding system performance degradation caused by delay.

[0120] Optionally, for any first PICO signal, different numbers of delay samples can be added to the time-domain data transmitted on the same SRS symbol. In other words, different numbers of zeros can be added to the time-domain data carried by the same SRS on any first PICO signal.

[0121] Optionally, for any first PICO signal, the same number of delay samples can be added to the time-domain data transmitted on different SRS symbols. In other words, the same number of zeros can be added to the time-domain data carried by different SRS on any first PICO signal.

[0122] For example, suppose there are two PICO signals being combined, and each PICO signal has two SRS symbols. If the first SRS symbol on one PICO signal carries S delay samples of time-domain data, and the first SRS symbol on the other PICO signal carries R delay samples of time-domain data, then the second SRS symbols on the two PICO signals also carry S delay samples of time-domain data, respectively.

[0123] Optionally, based on the third PICO signal, the PICO signal to which the terminal belongs is obtained, including:

[0124] Send a third PICO signal to the baseband processing unit (BBU);

[0125] Receive the PICO signal of the terminal affiliation determined by the BBU based on the third PICO signal.

[0126] Specifically, after the HUB obtains the third PICO signal, the HUB can send the third PICO signal to the BBU. After receiving the third PICO signal, the BBU will determine the PICO signal to which the terminal belongs based on the third PICO signal and send the determined PICO signal to which the terminal belongs to the HUB.

[0127] Optionally, the HUB can send a third PICO signal to the BBU.

[0128] Optionally, the receiver can receive the PICO signal of the terminal affiliation determined by the BBU based on the third PICO signal.

[0129] For example, the first PICO signal received by the miniature remote radio unit PicoRRU includes {PICO1, PICO2, PICO3, PICO4, PICO5}. The BBU determines the PICO signal to which the terminal belongs based on the third PICO signal sent by the HUB, which is {PICO2, PICO3, PICO5} in the first PICO signal.

[0130] Optionally, the PICO signals belonging to the terminal are merged, including:

[0131] Obtain the resource configuration table from the BBU;

[0132] Based on the resource configuration table, the PICO signals to which the terminal belongs are filtered;

[0133] The PICO signals obtained after filtering are merged.

[0134] Specifically, after the HUB obtains the PICO signal to which the terminal belongs from the BBU, or at the same time, it can also obtain the resource configuration table from the BBU. Then, the HUB can filter the PICO signals to which the terminal belongs based on the resource configuration table, and finally merge the PICO signals obtained after filtering.

[0135] Optionally, the HUB can obtain the resource configuration table corresponding to the PICO signal to which the terminal belongs from the BBU.

[0136] Optionally, the HUB can filter the PICO signals to which the terminal belongs based on the resource configuration table to obtain the valid PICO signals among the PICO signals to which the terminal belongs.

[0137] Optionally, if the signal path of any first target PICO signal in the PICO signals to which the terminal belongs is greater than or equal to a preset threshold, then the first target PICO signal can be considered a valid PICO signal, and the position of the time domain resource occupied by the first target PICO signal can be marked as 1 in the resource configuration table.

[0138] Optionally, if the signal path of any second target PICO signal in the PICO signals to which the terminal belongs is less than a preset threshold, then the second target PICO signal can be considered an invalid PICO signal, and the position of the time domain resources occupied by the second target PICO signal can be marked as 0 in the resource configuration table.

[0139] Optionally, the preset threshold value can be the value obtained after the strongest signal path is attenuated by a certain decibel (dB) value, and this dB value is configurable.

[0140] For example, the PICO signals to which the terminal belongs include PICO1, PICO2, and PICO3. The signal paths corresponding to PICO1 and PICO3 are both greater than a preset threshold, while the signal path corresponding to PICO2 is less than the preset threshold. In the resource configuration table, the positions of the time domain resources occupied by PICO1 and PICO3 are marked as 1, and the positions of the time domain resources occupied by PICO2 are marked as 0. Therefore, the HUB can filter out all PICO signals whose positions of time domain resources are marked as 1 based on the resource configuration table.

[0141] Understandably, the HUB filters the PICO signals belonging to the terminal based on the resource configuration table, and the filtered signals are the valid PICO signals among the PICO signals belonging to the terminal.

[0142] Optionally, the HUB can merge the effective PICO signals obtained after filtering to overcome the defect of increased noise floor caused by directly merging PICO signals.

[0143] The signal processing method provided in this application embodiment performs delay processing on each of the first PICO signals in the first PICO signal set and then merges them, and filters out the PICO signal to which the terminal belongs from the merged signals. Finally, the filtered PICO signals to which the terminal belongs are merged. This can avoid the defect of increased noise floor caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0144] Figure 3 This is a second schematic flowchart of the signal processing method provided in the embodiments of this application, as shown below. Figure 3 As shown in the figure, this application provides a signal processing method, the execution subject of which can be a baseband processing unit (BBU). The method includes:

[0145] Step 301: Receive the third PICO signal sent by the hub unit HUB. The third PICO signal is obtained by merging multiple second PICO signals. Any one of the multiple second PICO signals is obtained by delaying the first PICO signal corresponding to any one of the second PICO signals. The first PICO signal is any one of the first PICO signals in the set of first PICO signals.

[0146] Step 302: Based on the third PICO signal, determine the PICO signal to which the terminal belongs; the PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set, and each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit PicoRRU connected to the hub unit HUB.

[0147] Step 303: Send the PICO signal to which the terminal belongs to the HUB.

[0148] Specifically, after the HUB performs delay processing on multiple first PICO signals to obtain multiple second PICO signals, and merges the multiple second PICO signals into a third PICO signal, the HUB can send the third PICO signal to the BBU. Then, the BBU can receive the third PICO signal sent by the HUB, and determine the PICO signal to which the terminal belongs based on the third PICO signal. Finally, the BBU can send the PICO signal to which the terminal belongs that it has determined to the HUB.

[0149] Optionally, the BBU can receive a third PICO signal sent by the HUB.

[0150] Optionally, the third PICO signal can be obtained by merging multiple second PICO signals.

[0151] Optionally, any one of the multiple second PICO signals can be obtained by delaying the first PICO signal corresponding to any one of the second PICO signals.

[0152] For example, there are 5 miniature remote radio units (PicoRRUs) in the cell. The first PICO signals received by each of the 5 PicoRRUs form a first PICO signal set, which can be represented as {PICO1, PICO2, PICO3, PICO4, PICO5}. The HUB can perform delay processing on each of the 5 first PICO signals in the first PICO signal set to obtain 5 second PICO signals {PICO1', PICO2', PICO3', PICO4', PICO5'} corresponding to the 5 first PICO signals.

[0153] It should be noted that the above examples are merely illustrative of the embodiments of this application and are not intended to limit the embodiments of this application.

[0154] Optionally, the BBU can determine the PICO signal to which the terminal belongs based on the third PICO signal.

[0155] Optionally, the PICO signal to which the terminal belongs can be one or more first PICO signals from a first set of PICO signals.

[0156] For example, the PICO signal to which the terminal belongs can be {PICO1}, or {PICO2}, or {PICO1, PICO2}, or {PICO2, PICO3, PICO4, PICO5} from the above five first PICO signals {PICO1, PICO2, PICO3, PICO4}, or any other combination of the five first PICO signals.

[0157] It should be noted that the above examples are merely illustrative of the embodiments of this application and are not intended to limit the embodiments of this application.

[0158] Optionally, each of the first PICO signals in the first PICO signal set may come from a different miniature remote radio unit (PicoRRU) connected to the hub unit (HUB).

[0159] Optionally, the BBU can send the terminal's PICO signal to the HUB, so that the HUB can merge the terminal's PICO signal into a single signal before transmitting it to the BBU for processing.

[0160] The signal processing method provided in this application receives a third PICO signal sent by a hub unit (HUB), determines the PICO signal to which the terminal belongs based on the third PICO signal, and finally sends the PICO signal to which the terminal belongs to the HUB. This allows the HUB to merge the PICO signals to which the terminal belongs into one signal before transmitting it to the BBU for processing. This avoids the defect of increased noise floor caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0161] Optionally, based on the third PICO signal, the PICO signal to which the terminal belongs is determined, including:

[0162] The PICO signal to which the terminal belongs is determined based on the detection reference signal SRS on the third PICO signal.

[0163] Specifically, the BBU can determine the PICO signal to which the terminal belongs based on the SRS on the third PICO signal.

[0164] For example, the BBU can determine the time delay corresponding to different SRS signal paths based on the SRS on the third PICO signal, and then determine the PICO signal to which the terminal belongs based on the time delay corresponding to different SRS signal paths.

[0165] Optionally, the PICO signal to which the terminal belongs is determined based on the detection reference signal (SRS) on the third PICO signal, including:

[0166] Based on SRS, obtain the distribution of SRS signal path;

[0167] Based on the distribution of SRS signal paths, the PICO signal to which the terminal belongs is determined.

[0168] Specifically, the BBU can first obtain the distribution of SRS signal paths included in the SRS signal window based on the SRS on the third PICO signal, and then determine the PICO signal to which the terminal belongs based on the distribution of all SRS signal paths.

[0169] Optionally, the BBU can obtain the distribution of the SRS signal path within the SRS signal window based on the SRS on the third PICO signal.

[0170] Optionally, the BBU can determine the PICO signal to which the terminal belongs based on the distribution of SRS signal paths within the SRS signal window.

[0171] Optionally, based on the distribution of the SRS signal path, the PICO signal to which the terminal belongs is determined, including:

[0172] Based on the distribution of the SRS signal path, the mapping relationship between the first PICO signal and the SRS signal path is determined;

[0173] Based on the mapping relationship, the PICO signal to which the terminal belongs is determined.

[0174] Specifically, the BBU determines the PICO signal to which the terminal belongs based on the distribution of the SRS signal path, which may include the following steps (a) and (b):

[0175] Step (a): The BBU determines the mapping relationship between the first PICO signal and the SRS signal path based on the distribution of the SRS signal path;

[0176] Step (b): The BBU determines the PICO signal to which the terminal belongs based on the mapping relationship between the first PICO signal and the SRS signal path.

[0177] Optionally, the BBU can determine the mapping relationship between the first PICO signal and the SRS signal path based on the distribution of the SRS signal path.

[0178] Optionally, the BBU can determine the PICO signal to which the terminal belongs based on the mapping relationship between the first PICO signal and the SRS signal path.

[0179] Optionally, based on the distribution of the SRS signal path, the mapping relationship between the first PICO signal and the SRS signal path is determined, including:

[0180] Based on the distribution of SRS signal paths, determine the first SRS IRT value corresponding to each SRS signal path;

[0181] Based on the relationship between each first SRS IRT value and the number of delay samples corresponding to each first PICO signal when the delay processing is performed, the mapping relationship is determined.

[0182] Specifically, the BBU determines the mapping relationship between the first PICO signal and the SRS signal path based on the distribution of the SRS signal path, which may include the following steps (c) and (d):

[0183] Step (c): Based on the distribution of SRS signal paths included in the SRS signal window, the BBU determines the first SRS impulse response time (IRT) value corresponding to each SRS signal path.

[0184] Step (d): Based on the relationship between each first SRS IRT value and the number of delay samples corresponding to each first PICO signal when performing delay processing, the BBU determines the mapping relationship between the first PICO signal and the SRS signal path.

[0185] Optionally, in an ideal environment, i.e. when there is no system delay, the BBU can determine the mapping relationship between the first PICO signal and the SRS signal path based on the above steps (c) and (d).

[0186] Optionally, the BBU can determine the first SRS IRT value corresponding to each SRS signal path based on the distribution of SRS signal paths included in the SRS signal window.

[0187] Optionally, the BBU can determine the mapping relationship between the first PICO signal and the SRS signal path based on the relationship between each first SRS IRT value and the number of delay samples corresponding to each first PICO signal when it is delayed.

[0188] For example, if the absolute difference between a first SRS IRT value and the number of delay samples corresponding to one of the target PICO signals among all first PICO signals satisfies a preset threshold, it can be determined that the SRS signal path corresponding to the first SRS IRT value matches the target PICO signal.

[0189] It should be noted that the above examples are merely illustrative of the embodiments of this application and are not intended to limit the embodiments of this application.

[0190] Optionally, based on the distribution of the SRS signal path, the mapping relationship between the first PICO signal and the SRS signal path is determined, including:

[0191] Determine the DMRS IRT measurement value, and based on the distribution of SRS signal paths, determine the first SRS IRT value corresponding to each SRS signal path;

[0192] Based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path, determine the second SRS IRT value corresponding to each SRS signal path.

[0193] Based on the relationship between each second SRS IRT value and the number of delay samples corresponding to each first PICO signal when the delay processing is performed, the mapping relationship is determined.

[0194] Specifically, the BBU determines the mapping relationship between the first PICO signal and the SRS signal path based on the distribution of the SRS signal path, which may include the following steps (e)-(g):

[0195] Step (e): The BBU determines the measured value of the demodulation reference signal (DMRS) IRT and, based on the distribution of the SRS signal paths included in the SRS signal window, determines the first SRS IRT value corresponding to each SRS signal path.

[0196] Step (f): Based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path, the BBU determines the second SRS IRT value corresponding to each SRS signal path.

[0197] Step (g): Based on the relationship between each second SRS IRT value and the number of delay samples corresponding to each first PICO signal when performing delay processing, the BBU determines the mapping relationship between the first PICO signal and the SRS signal path.

[0198] Optionally, since there may be system delay due to non-ideal factors in the actual environment, in the case of system delay, the mapping relationship between the first PICO signal and the SRS signal path can be determined based on the above steps (e)-(g) to accurately identify the information of the first PICO signal.

[0199] Optionally, the BBU can determine the DMRS IRT measurement value based on the DMRS of the Physical Uplink Shared Channel (PUSCH), and the DMRS IRT measurement value is the delay value of the current system.

[0200] Optionally, the BBU can determine the first SRS IRT value corresponding to each SRS signal path based on the distribution of SRS signal paths included in the SRS signal window.

[0201] Optionally, the BBU can determine the second SRS IRT value corresponding to each SRS signal path based on the DMRS IRT measurement value and the first SRSIRT value corresponding to each SRS signal path.

[0202] For example, the BBU can subtract the DMRS IRT measurement from the first SRS IRT value to obtain the second SRS IRT value.

[0203] Optionally, the BBU can determine the mapping relationship between the first PICO signal and the SRS signal path based on the relationship between each second SRS IRT value and the number of delay samples corresponding to each first PICO signal when it is delayed.

[0204] For example, if the absolute difference between a second SRS IRT value and the number of delay samples corresponding to one of the target PICO signals among all the first PICO signals satisfies a preset threshold, it can be determined that the SRS signal path corresponding to the second SRS IRT value matches the target PICO signal.

[0205] It should be noted that the above examples are merely illustrative of the embodiments of this application and are not intended to limit the embodiments of this application.

[0206] Optionally, based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path, a second SRS IRT value corresponding to each SRS signal path is determined, including:

[0207] Based on the DMRS IRT measurement value and the first SRS IRT value corresponding to the target SRS signal path among all SRS signal paths, determine the second SRS IRT value corresponding to the target SRS signal path.

[0208] Determine the second SRS IRT value corresponding to each SRS signal path.

[0209] Optionally, the BBU can determine the second SRS IRT value corresponding to the target SRS signal path based on the DMRS IRT measurement value and the first SRS IRT value corresponding to the target SRS signal path among all SRS signal paths.

[0210] Optionally, the BBU can determine the second SRS IRT value corresponding to each SRS signal path.

[0211] For example, if the SRS signal window includes three SRS signal paths, the BBU can determine the second SRS IRT value corresponding to the first SRS signal path based on the DMRS IRT measurement value and the first SRS IRT value corresponding to the first SRS signal path; the BBU can determine the second SRS IRT value corresponding to the second SRS signal path based on the DMRS IRT measurement value and the first SRS IRT value corresponding to the second SRS signal path; and the BBU can determine the second SRS IRT value corresponding to the third SRS signal path based on the DMRS IRT measurement value and the first SRS IRT value corresponding to the third SRS signal path.

[0212] It should be noted that the above examples are merely illustrative of the embodiments of this application and are not intended to limit the embodiments of this application.

[0213] Optionally, after determining the PICO signal to which the terminal belongs based on the third PICO signal, the method further includes:

[0214] Determine the time-domain resources corresponding to the PICO signal to which the terminal belongs;

[0215] Based on time-domain resources, a resource configuration table is generated.

[0216] Specifically, after the BBU determines the PICO signal to which the terminal belongs based on the third PICO signal, the BBU can also determine the time domain resources corresponding to the PICO signal to which the terminal belongs, and generate a resource configuration table based on the time domain resources.

[0217] It is understandable that valid PICO signals occupy time-domain resources, while invalid PICO signals do not. Therefore, the time-domain resource location corresponding to the valid PICO signal in the terminal's PICO signal can be marked as 1, and the time-domain resource location corresponding to the invalid PICO signal in the terminal's PICO signal can be marked as 0.

[0218] Optionally, the BBU can obtain the time-domain resources corresponding to the PICO signal to which the terminal belongs, and generate a resource configuration table based on the time-domain resources corresponding to each PICO signal to which the terminal belongs. In the generated resource configuration table, valid PICO signals can be marked as 1, and invalid PICO signals can be marked as 0.

[0219] Optionally, the signal processing method provided in this application embodiment further includes:

[0220] Send the resource configuration table to the HUB.

[0221] Specifically, after the BBU generates the resource configuration table, the BBU can send the resource configuration table to the HUB, so that the HUB can filter the PICO signals to which the terminal belongs based on the resource configuration table, and merge the PICO signals obtained after filtering.

[0222] The signal processing method provided in this application receives a third PICO signal sent by a hub unit (HUB), determines the PICO signal to which the terminal belongs based on the third PICO signal, and finally sends the PICO signal to which the terminal belongs to the HUB. This allows the HUB to merge the PICO signals to which the terminal belongs into one signal before transmitting it to the BBU for processing. This avoids the defect of increased noise floor caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0223] In one embodiment, the HUB can obtain time-domain data carried or transmitted on the SRS symbols of the M first PICO signals.

[0224] Optionally, the BBU can notify the HUB of the location of the time-domain data carried or transmitted on the SRS symbol of the terminal.

[0225] Optionally, the HUB can extract the data carried or transmitted at the time domain location of the SRS symbol and add different time delays to the SRS time domain data on the M first PICO signals respectively. The delays are consistent across different SRS symbols.

[0226] Optionally, the HUB can merge the delayed first PICO signals and transmit the merged signal to the BBU.

[0227] Optionally, the location of the time-domain data carried or transmitted on the SRS symbol can be the location of the last two or the last four symbols in each slot.

[0228] Optionally, the execution process of the HUB may include the following steps (1.1)-(1.3):

[0229] Step (1.1): Determine the number of first PICO signals and the time-domain data of the corresponding SRS symbol positions;

[0230] For example, the HUB determines the M first PICO signals corresponding to the logical PICO signal and obtains the time-domain data of the SRS symbol positions on the M first PICO signals, named Data_srs(n, m), where n is the index, n = 1...N, N is the number of logical PICO signals, m = 1...M, M is the number of first PICO signals corresponding to each logical PICO signal, and the logical PICO signal is the PICO signal output after being combined by the HUB.

[0231] Step (1.2): Add different delay samples to the SRS time domain data corresponding to each first PICO signal to obtain the second PICO signal corresponding to each first PICO signal;

[0232] Optionally, different delay samples can be added to the time-domain data of the SRS symbol positions on the M first PICO signals. This may include adding S zeros before the CP, or adding S zeros at the end of the OFDM symbol, or other methods of adding delay samples. This application embodiment does not specifically limit this.

[0233] Optionally, regardless of which method is used to add delay samples, the number of delay samples must be less than or equal to the length of the cyclic prefix (CP). This ensures the integrity of the OFDM symbol and avoids performance degradation due to delay.

[0234] Step (1.3): Merge the second PICO signals corresponding to each first PICO signal, and transmit the merged third PICO signal to the BBU so that the BBU can process the third PICO signal.

[0235] In one embodiment, the BBU can receive the third PICO signal transmitted by the HUB and determine the mapping relationship between the first PICO signal and the SRS signal path based on the SRS on the third PICO signal.

[0236] Optionally, after the BBU receives the third PICO signal and obtains the SRS on the third PICO signal, it can calculate the SRS channel estimate and determine the PICO signal to which the terminal belongs by means of the SRS signal path distribution in the SRS signal window.

[0237] Alternatively, the BBU can parse the SRS on the third PICO signal based on the following two schemes:

[0238] Option 1: Determine the mapping relationship between the first PICO signal and the SRS signal path based on SRS IRT;

[0239] Option 2: Determine the mapping relationship between the first PICO signal and the SRS signal path based on the collaborative determination of DMRS IRT and SRS IRT.

[0240] It is understandable that Scheme 2 is an enhancement of Scheme 1. Due to the influence of non-ideal factors in the actual environment, there may be system delay. When the system delay is large, Scheme 1 alone cannot accurately obtain the corresponding number of the first PICO signal. Moreover, if only part of the SRS signal path is detected in the SRS signal window, it is impossible to determine whether it is due to the SRS signal path going out of the window or due to the absence of signal on part of the first PICO signal. In this case, Scheme 2 can be used to accurately identify the information of the first PICO signal.

[0241] Optionally, the BBU determines the mapping relationship between the first PICO signal and the SRS signal path based on the SRS, which may include the following steps (2.1)-(2.4):

[0242] Step (2.1): Obtain the signal distribution of the M first PICO signals based on SRS channel estimation;

[0243] Specifically, the distribution of SRS signal paths within the SRS signal window can be obtained by calculating the SRS channel estimate, thereby determining the SRS IRT value of each SRS signal path.

[0244] Optionally, if the BBU uses the above scheme 1 to parse the SRS on the third PICO signal, it can skip the following steps (2.2) and (2.3) and directly execute step (2.4); if the BBU uses the above scheme 2 to parse the SRS on the third PICO signal, it needs to execute the following steps (2.2)-step (2.4).

[0245] Step (2.2): Obtain the total delay of the current signal based on the DMRS IRT measurement value;

[0246] Specifically, the current system delay value can be determined by DMRS IRT measurement, and then the total delay value can be obtained based on the SRS IRT values ​​of each SRS signal path determined in step (2.1).

[0247] Step (2.3): Obtain the SRS signal delay measurement value for each SRS signal path;

[0248] Specifically, the DMRS IRT measurement value can be discarded from the total delay value to obtain the number of actual delay samples for each SRS signal path, i.e., the SRS IRT value for each SRS signal path (the difference from the SRS IRT value obtained in step (2.1) is that this value discards the influence of system delay).

[0249] Step (2.4): Determine the mapping relationship between the first PICO signal and each SRS signal path.

[0250] Specifically, the mapping relationship between the first PICO signal and the SRS signal path can be obtained by the correspondence between the SRS IRT value of each SRS signal path and the number of delay samples corresponding to each first PICO signal, thereby obtaining the PICO signal to which the terminal belongs.

[0251] Optionally, the BBU can generate a resource configuration table based on the PICO signal of the terminal's affiliation, according to the rules, for the time-domain resources scheduled by the user to which the terminal belongs.

[0252] Optionally, the HUB can obtain a resource configuration table from the BBU, filter the PICO signals to which the terminal belongs based on the resource configuration table, and merge the filtered PICO signals.

[0253] The signal processing method provided in this application embodiment performs delay processing on each of the first PICO signals in the first PICO signal set and then merges them, and filters out the PICO signal to which the terminal belongs from the merged signals. Finally, the filtered PICO signals to which the terminal belongs are merged. This can avoid the defect of increased noise floor caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0254] The methods and apparatuses provided in the various embodiments of this application are based on the same concept. Since the methods and apparatuses solve problems in similar ways, the implementations of the apparatuses and methods can refer to each other, and repeated details will not be repeated.

[0255] Figure 4This is a schematic diagram of the structure of a hub unit (HUB) provided in an embodiment of this application, as shown below. Figure 4 As shown, the network-side device includes a memory 420, a transceiver 400, and a processor 410, wherein:

[0256] The memory 420 is used to store computer programs; the transceiver 400 is used to send and receive data under the control of the processor 410; the processor 410 is used to read the computer program in the memory 420 and perform the following operations:

[0257] Each first PICO signal in the first PICO signal set is delayed to obtain a second PICO signal corresponding to each first PICO signal. Each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit (PicoRRU) connected to the hub unit (HUB).

[0258] The second PICO signals corresponding to each of the first PICO signals are merged to obtain the third PICO signal;

[0259] Based on the third PICO signal, the PICO signal to which the terminal belongs is obtained, wherein the PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set.

[0260] The PICO signals belonging to the terminal are merged.

[0261] The hub unit HUB provided in this application embodiment performs delay processing on each first PICO signal in the first PICO signal set and then merges them, and filters out the PICO signal to which the terminal belongs from the merged signal. Finally, the filtered PICO signals to which the terminal belongs are merged. This can avoid the defect of increased noise floor caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0262] Specifically, transceiver 400 is used to receive and send data under the control of processor 410.

[0263] Among them, Figure 4In 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 410) and memory (memory 420). The bus architecture can also link 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 400 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 410 is responsible for managing the bus architecture and general processing, and the memory 420 can store data used by the processor 410 during operation.

[0264] The processor 410 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.

[0265] Optionally, the step of performing delay processing on each of the first PICO signals in the first PICO signal set to obtain the second PICO signal corresponding to each PICO signal includes:

[0266] Determine the time-domain data carried by the probe reference signal SRS on each of the first PICO signals;

[0267] Delayed samples are added to the time-domain data carried by the probe reference signal SRS on each of the first PICO signals to obtain the second PICO signal corresponding to each of the first PICO signals.

[0268] Optionally, adding delayed samples to the time-domain data carried by the probe reference signal (SRS) on each of the first PICO signals to obtain the second PICO signal corresponding to each of the first PICO signals includes any one of the following:

[0269] Add the target number of zeros before the cyclic prefix CP corresponding to the time-domain data carried by the probe reference signal SRS on each of the first PICO signals; or

[0270] The target number of zeros are added to the tail of the OFDM symbol corresponding to the time-domain data carried by the probe reference signal SRS on each of the first PICO signals;

[0271] Wherein, the target number is less than or equal to the length of the CP, and on any first PICO signal, the number of zeros added to the time-domain data of the same SRS carrier is different, while the number of zeros added to the time-domain data of different SRS carriers is the same.

[0272] Optionally, obtaining the terminal's home PICO signal based on the third PICO signal includes:

[0273] Send the third PICO signal to the baseband processing unit (BBU);

[0274] The BBU receives the PICO signal to which the terminal belongs, determined based on the third PICO signal.

[0275] Optionally, the merging of the PICO signals to which the terminal belongs includes:

[0276] Obtain the resource configuration table from the BBU;

[0277] Based on the resource configuration table, the PICO signals to which the terminal belongs are filtered;

[0278] The PICO signals obtained after filtering are merged.

[0279] The hub unit HUB provided in this application embodiment performs delay processing on each first PICO signal in the first PICO signal set and then merges them, and filters out the PICO signal to which the terminal belongs from the merged signal. Finally, the filtered PICO signals to which the terminal belongs are merged. This can avoid the defect of increased noise floor caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0280] It should be noted that the hub unit HUB provided in this application embodiment can implement all the method steps implemented by the method embodiment with the hub unit HUB as the execution subject, 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.

[0281] Figure 5 This is a schematic diagram of the structure of a baseband processing unit (BBU) provided in an embodiment of this application, as shown below. Figure 5 As shown, the network-side device includes a memory 520, a transceiver 500, and a processor 510, wherein:

[0282] The memory 520 is used to store computer programs; the transceiver 500 is used to send and receive data under the control of the processor 510; the processor 510 is used to read the computer program in the memory 520 and perform the following operations:

[0283] The system receives a third PICO signal sent by a hub unit (HUB). The third PICO signal is obtained by merging multiple second PICO signals. Any one of the multiple second PICO signals is obtained by delaying a first PICO signal corresponding to that second PICO signal. The first PICO signal is any one of the first PICO signals in the set of first PICO signals.

[0284] Based on the third PICO signal, the PICO signal to which the terminal belongs is determined; the PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set, and each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit PicoRRU connected to the hub unit HUB.

[0285] Send the PICO signal to which the terminal belongs to the HUB.

[0286] The baseband processing unit (BBU) provided in this application embodiment receives a third PICO signal sent by a hub unit (HUB), determines the PICO signal to which the terminal belongs based on the third PICO signal, and finally sends the PICO signal to which the terminal belongs to the HUB. This allows the HUB to merge the PICO signals to which the terminal belongs into one signal before transmitting it to the BBU for processing. This avoids the defect of increased noise floor caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0287] Specifically, transceiver 500 is used to receive and send data under the control of processor 510.

[0288] Among them, Figure 5In 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 510) and memory (memory 520). The bus architecture can also link 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 500 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 510 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 510 during operation.

[0289] The processor 510 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.

[0290] Optionally, determining the PICO signal to which the terminal belongs based on the third PICO signal includes:

[0291] The PICO signal to which the terminal belongs is determined based on the detection reference signal SRS on the third PICO signal.

[0292] Optionally, determining the PICO signal to which the terminal belongs based on the detection reference signal (SRS) on the third PICO signal includes:

[0293] Based on the SRS, the distribution of the SRS signal path is obtained;

[0294] Based on the distribution of the SRS signal path, the PICO signal to which the terminal belongs is determined.

[0295] Optionally, determining the PICO signal to which the terminal belongs based on the distribution of the SRS signal path includes:

[0296] Based on the distribution of the SRS signal path, the mapping relationship between the first PICO signal and the SRS signal path is determined;

[0297] Based on the mapping relationship, the PICO signal to which the terminal belongs is determined.

[0298] Optionally, determining the mapping relationship between the first PICO signal and the SRS signal path based on the distribution of the SRS signal path includes:

[0299] Based on the distribution of the SRS signal paths, determine the first SRS IRT value corresponding to each of the SRS signal paths;

[0300] The mapping relationship is determined based on the relationship between each of the first SRS IRT values ​​and the number of delay samples corresponding to each of the first PICO signals when they are subjected to delay processing.

[0301] Optionally, determining the mapping relationship between the first PICO signal and the SRS signal path based on the distribution of the SRS signal path includes:

[0302] Determine the DMRS IRT measurement value, and based on the distribution of the SRS signal path, determine the first SRS IRT value corresponding to each of the SRS signal paths;

[0303] Based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path, the second SRS IRT value corresponding to each SRS signal path is determined.

[0304] The mapping relationship is determined based on the relationship between each of the second SRS IRT values ​​and the number of delay samples corresponding to each of the first PICO signals when they are subjected to delay processing.

[0305] Optionally, determining the second SRS IRT value corresponding to each SRS signal path based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path includes:

[0306] Based on the DMRS IRT measurement value and the first SRS IRT value corresponding to the target SRS signal path among all the SRS signal paths, determine the second SRS IRT value corresponding to the target SRS signal path;

[0307] Determine the second SRS IRT value corresponding to each of the SRS signal paths.

[0308] Optionally, after determining the PICO signal to which the terminal belongs based on the third PICO signal, the method further includes:

[0309] Determine the time-domain resources corresponding to the PICO signal to which the terminal belongs;

[0310] Based on the aforementioned time-domain resources, a resource configuration table is generated.

[0311] Optionally, the operation further includes:

[0312] Send the resource configuration table to the HUB.

[0313] The baseband processing unit (BBU) provided in this application embodiment receives a third PICO signal sent by a hub unit (HUB), determines the PICO signal to which the terminal belongs based on the third PICO signal, and finally sends the PICO signal to which the terminal belongs to the HUB. This allows the HUB to merge the PICO signals to which the terminal belongs into one signal before transmitting it to the BBU for processing. This avoids the defect of increased noise floor caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0314] It should be noted that the baseband processing unit BBU provided in this application embodiment can implement all the method steps implemented by the method embodiment with the baseband processing unit BBU as the execution subject, 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.

[0315] Figure 6 This is one of the structural schematic diagrams of the signal processing device provided in the embodiments of this application, such as... Figure 6 As shown, the device includes: a first acquisition unit 601, a second acquisition unit 602, a third acquisition unit 603, and a merging unit 604, wherein:

[0316] The first acquisition unit 601 is used to perform delay processing on each first PICO signal in the first PICO signal set to acquire the second PICO signal corresponding to each first PICO signal. Each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit PicoRRU connected to the hub unit HUB.

[0317] The second acquisition unit 602 is used to merge the second PICO signals corresponding to each of the first PICO signals to obtain the third PICO signal.

[0318] The third acquisition unit 603 is used to acquire the terminal's associated PICO signal based on the third PICO signal, wherein the terminal's associated PICO signal is one or more of the first PICO signals in combination with the first PICO signals.

[0319] The merging unit 604 is used to merge the PICO signals belonging to the terminal.

[0320] The signal processing apparatus provided in this application embodiment performs delay processing on each of the first PICO signals in the first PICO signal set and then merges them, and filters out the PICO signal to which the terminal belongs from the merged signals. Finally, the filtered PICO signals to which the terminal belongs are merged. This can avoid the defect of increased background noise caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0321] Optionally, the first acquisition unit is further configured to:

[0322] Determine the time-domain data carried by the probe reference signal SRS on each of the first PICO signals;

[0323] Delayed samples are added to the time-domain data carried by the probe reference signal SRS on each of the first PICO signals to obtain the second PICO signal corresponding to each of the first PICO signals.

[0324] Optionally, the first acquisition unit is further configured to:

[0325] Add the target number of zeros before the cyclic prefix CP corresponding to the time-domain data carried by the probe reference signal SRS on each of the first PICO signals; or

[0326] The target number of zeros are added to the tail of the OFDM symbol corresponding to the time-domain data carried by the probe reference signal SRS on each of the first PICO signals;

[0327] Wherein, the target number is less than or equal to the length of the CP, and on any first PICO signal, the number of zeros added to the time-domain data of the same SRS carrier is different, while the number of zeros added to the time-domain data of different SRS carriers is the same.

[0328] Optionally, the third acquisition unit is further configured to:

[0329] Send the third PICO signal to the baseband processing unit (BBU);

[0330] The BBU receives the PICO signal to which the terminal belongs, determined based on the third PICO signal.

[0331] Optionally, the merging unit is further configured to:

[0332] Obtain the resource configuration table from the BBU;

[0333] Based on the resource configuration table, the PICO signals to which the terminal belongs are filtered;

[0334] The PICO signals obtained after filtering are merged.

[0335] The signal processing apparatus provided in this application embodiment performs delay processing on each of the first PICO signals in the first PICO signal set and then merges them, and filters out the PICO signal to which the terminal belongs from the merged signals. Finally, the filtered PICO signals to which the terminal belongs are merged. This can avoid the defect of increased background noise caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0336] Figure 7 This is a second schematic diagram of the signal processing device provided in the embodiments of this application, as shown below. Figure 7 As shown, the device includes: a receiving unit 701, a determining unit 702, and a first transmitting unit 703, wherein:

[0337] The receiving unit 701 is used to receive a third PICO signal sent by the hub unit HUB. The third PICO signal is obtained by merging multiple second PICO signals. Any one of the multiple second PICO signals is obtained by delaying a first PICO signal corresponding to the first PICO signal. The first PICO signal is any one of the first PICO signals in the set of first PICO signals.

[0338] The determining unit 702 is used to determine the PICO signal to which the terminal belongs based on the third PICO signal; the PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set, and each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit PicoRRU connected to the hub unit HUB.

[0339] The first transmitting unit 703 is used to transmit the PICO signal to which the terminal belongs to the HUB.

[0340] The signal processing apparatus provided in this application receives a third PICO signal sent by a hub unit (HUB), determines the PICO signal to which the terminal belongs based on the third PICO signal, and finally sends the PICO signal to which the terminal belongs to the HUB. This allows the HUB to merge the PICO signals to which the terminal belongs into one signal before transmitting it to the BBU for processing. This avoids the defect of increased noise floor caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0341] Optionally, the determining unit is further configured to:

[0342] The PICO signal to which the terminal belongs is determined based on the detection reference signal SRS on the third PICO signal.

[0343] Optionally, the determining unit is further configured to:

[0344] Based on the SRS, the distribution of the SRS signal path is obtained;

[0345] Based on the distribution of the SRS signal path, the PICO signal to which the terminal belongs is determined.

[0346] Optionally, the determining unit is further configured to:

[0347] Based on the distribution of the SRS signal path, the mapping relationship between the first PICO signal and the SRS signal path is determined;

[0348] Based on the mapping relationship, the PICO signal to which the terminal belongs is determined.

[0349] Optionally, the determining unit is further configured to:

[0350] Based on the distribution of the SRS signal paths, determine the first SRS IRT value corresponding to each of the SRS signal paths;

[0351] The mapping relationship is determined based on the relationship between each of the first SRS IRT values ​​and the number of delay samples corresponding to each of the first PICO signals when they are subjected to delay processing.

[0352] Optionally, the determining unit is further configured to:

[0353] Determine the DMRS IRT measurement value, and based on the distribution of the SRS signal path, determine the first SRS IRT value corresponding to each of the SRS signal paths;

[0354] Based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path, the second SRS IRT value corresponding to each SRS signal path is determined.

[0355] Based on the relationship between each of the second SRS IRT values ​​and the number of delay samples corresponding to each of the first PICO signals when they are subjected to delay processing, the mapping relationship is determined, wherein the total number of delay samples is the number of delay samples corresponding to each of the first PICO signals when they are subjected to delay processing.

[0356] Optionally, the determining unit is further configured to:

[0357] Based on the DMRS IRT measurement value and the first SRS IRT value corresponding to the target SRS signal path among all the SRS signal paths, determine the second SRS IRT value corresponding to the target SRS signal path;

[0358] Determine the second SRS IRT value corresponding to each of the SRS signal paths.

[0359] Optionally, the apparatus further includes a generation unit, the generation unit being used for:

[0360] Determine the time-domain resources corresponding to the PICO signal to which the terminal belongs;

[0361] Based on the aforementioned time-domain resources, a resource configuration table is generated.

[0362] Optionally, the apparatus further includes a second transmitting unit, the second transmitting unit being used for:

[0363] Send the resource configuration table to the HUB.

[0364] The signal processing apparatus provided in this application receives a third PICO signal sent by a hub unit (HUB), determines the PICO signal to which the terminal belongs based on the third PICO signal, and finally sends the PICO signal to which the terminal belongs to the HUB. This allows the HUB to merge the PICO signals to which the terminal belongs into one signal before transmitting it to the BBU for processing. This avoids the defect of increased noise floor caused by directly merging PICO signals, thereby expanding the coverage of indoor small base stations and reducing the construction cost of indoor coverage area.

[0365] 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.

[0366] 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-side 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.

[0367] It should be noted that the apparatus provided in this embodiment of the invention can implement all the method steps implemented in the above method embodiment 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.

[0368] On the other hand, embodiments of this application also provide a processor-readable storage medium storing a computer program for causing the processor to execute the methods provided in the above embodiments, such as including:

[0369] Each first PICO signal in the first PICO signal set is delayed to obtain a second PICO signal corresponding to each first PICO signal. Each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit (PicoRRU) connected to the hub unit (HUB).

[0370] The second PICO signals corresponding to each of the first PICO signals are merged to obtain the third PICO signal;

[0371] Based on the third PICO signal, the PICO signal to which the terminal belongs is obtained, wherein the PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set.

[0372] The PICO signals belonging to the terminal are merged.

[0373] Or, for example, including:

[0374] The system receives a third PICO signal sent by a hub unit (HUB). The third PICO signal is obtained by merging multiple second PICO signals. Any one of the multiple second PICO signals is obtained by delaying a first PICO signal corresponding to that second PICO signal. The first PICO signal is any one of the first PICO signals in the set of first PICO signals.

[0375] Based on the third PICO signal, the PICO signal to which the terminal belongs is determined; the PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set, and each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit PicoRRU connected to the hub unit HUB.

[0376] Send the PICO signal to which the terminal belongs to the HUB.

[0377] The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), and semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0378] 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.

[0379] 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.

[0380] 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.

[0381] 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 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0382] 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, characterized in that, Applications to hub units include: Each first PICO signal in the first PICO signal set is delayed to obtain a second PICO signal corresponding to each first PICO signal. Each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit (PicoRRU) connected to the hub unit (HUB). The second PICO signals corresponding to each of the first PICO signals are merged to obtain the third PICO signal; Based on the third PICO signal, the PICO signal to which the terminal belongs is obtained. The PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set. The PICO signal to which the terminal belongs is determined based on the mapping relationship between the first PICO signal and the SRS signal path. The SRS signal path is the SRS signal path of the detection reference signal SRS on the third PICO signal. The mapping relationship is a relationship between each first SRS IRT value or second SRS IRT value and the number of delay samples corresponding to each first PICO signal when performing delay processing. The first SRS IRT value includes the first SRS IRT value corresponding to each SRS signal path determined based on the distribution of the SRS signal path. The second SRS IRT value includes the second SRS IRT value corresponding to each SRS signal path determined based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path. The PICO signals belonging to the terminal are merged.

2. The signal processing method according to claim 1, characterized in that, The step of performing delay processing on each of the first PICO signals in the first PICO signal set to obtain the second PICO signal corresponding to each PICO signal includes: Determine the time-domain data carried by the probe reference signal SRS on each of the first PICO signals; Delayed samples are added to the time-domain data carried by the probe reference signal SRS on each of the first PICO signals to obtain the second PICO signal corresponding to each of the first PICO signals.

3. The signal processing method according to claim 2, characterized in that, Adding delayed samples to the time-domain data carried by the probe reference signal (SRS) on each of the first PICO signals to obtain the second PICO signal corresponding to each of the first PICO signals includes any one of the following: Add the target number of zeros before the cyclic prefix CP corresponding to the time-domain data carried by the probe reference signal SRS on each of the first PICO signals; or The target number of zeros are added to the tail of the OFDM symbol corresponding to the time-domain data carried by the probe reference signal SRS on each of the first PICO signals; Wherein, the target number is less than or equal to the length of the CP, and on any first PICO signal, the number of zeros added to the time-domain data of the same SRS carrier is different, while the number of zeros added to the time-domain data of different SRS carriers is the same.

4. The signal processing method according to claim 2 or 3, characterized in that, The step of obtaining the PICO signal to which the terminal belongs based on the third PICO signal includes: Send the third PICO signal to the baseband processing unit (BBU); The BBU receives the PICO signal to which the terminal belongs, determined based on the third PICO signal.

5. The signal processing method according to claim 4, characterized in that, The merging of the PICO signals belonging to the terminal includes: Obtain the resource configuration table from the BBU; Based on the resource configuration table, the PICO signals to which the terminal belongs are filtered; The PICO signals obtained after filtering are merged.

6. A signal processing method, characterized in that, Applied to the baseband processing unit (BBU), including: The system receives a third PICO signal sent by a hub unit (HUB). The third PICO signal is obtained by merging multiple second PICO signals. Any one of the multiple second PICO signals is obtained by delaying a first PICO signal corresponding to that second PICO signal. The first PICO signal is any one of the first PICO signals in the set of first PICO signals. Based on the distribution of the SRS signal path of the detection reference signal SRS on the third PICO signal, a mapping relationship between the first PICO signal and the SRS signal path is determined; based on the mapping relationship, the PICO signal to which the terminal belongs is determined; the PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set, each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit PicoRRU connected to the hub unit HUB; the mapping relationship is a mapping relationship determined by the relationship between each first SRS IRT value or second SRS IRT value and the number of delay samples corresponding to each first PICO signal when performing delay processing; the first SRS IRT value includes the first SRS IRT value corresponding to each SRS signal path determined based on the distribution of the SRS signal path; the second SRS IRT value includes the second SRS IRT value corresponding to each SRS signal path determined based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path. Send the PICO signal to which the terminal belongs to the HUB.

7. The signal processing method according to claim 6, characterized in that, The process of determining the mapping relationship includes: Based on the distribution of the SRS signal paths, determine the first SRS IRT value corresponding to each of the SRS signal paths; The mapping relationship is determined based on the relationship between each of the first SRS IRT values ​​and the number of delay samples corresponding to each of the first PICO signals when they are subjected to delay processing.

8. The signal processing method according to claim 6, characterized in that, The process of determining the mapping relationship includes: The DMRS IRT measurement value is determined, and based on the distribution of the SRS signal path, the first SRS IRT value corresponding to each SRS signal path is determined; Based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path, the second SRS IRT value corresponding to each SRS signal path is determined. The mapping relationship is determined based on the relationship between each of the second SRS IRT values ​​and the number of delay samples corresponding to each of the first PICO signals when they are subjected to delay processing.

9. The signal processing method according to claim 8, characterized in that, The step of determining the second SRS IRT value corresponding to each SRS signal path based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path includes: Based on the DMRS IRT measurement value and the first SRSIRT value corresponding to the target SRS signal path among all the SRS signal paths, determine the second SRS IRT value corresponding to the target SRS signal path; Determine the second SRS IRT value corresponding to each of the SRS signal paths.

10. The signal processing method according to any one of claims 6-9, characterized in that, After determining the PICO signal to which the terminal belongs based on the third PICO signal, the method further includes: Determine the time-domain resources corresponding to the PICO signal to which the terminal belongs; Based on the aforementioned time-domain resources, a resource configuration table is generated.

11. The signal processing method according to claim 10, characterized in that, The method further includes: Send the resource configuration table to the HUB.

12. A hub unit (HUB), characterized in that, Includes memory, transceiver, and processor: 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: Each first PICO signal in the first PICO signal set is delayed to obtain a second PICO signal corresponding to each first PICO signal. Each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit (PicoRRU) connected to the hub unit (HUB). The second PICO signals corresponding to each of the first PICO signals are merged to obtain the third PICO signal; Based on the third PICO signal, the PICO signal to which the terminal belongs is obtained. The PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set. The PICO signal to which the terminal belongs is determined based on the mapping relationship between the first PICO signal and the SRS signal path. The SRS signal path is the SRS signal path of the detection reference signal SRS on the third PICO signal. The mapping relationship is a relationship between each first SRS IRT value or second SRS IRT value and the number of delay samples corresponding to each first PICO signal when performing delay processing. The first SRS IRT value includes the first SRS IRT value corresponding to each SRS signal path determined based on the distribution of the SRS signal path. The second SRS IRT value includes the second SRS IRT value corresponding to each SRS signal path determined based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path. The PICO signals belonging to the terminal are merged.

13. The hub unit (HUB) according to claim 12, characterized in that, The step of performing delay processing on each of the first PICO signals in the first PICO signal set to obtain the second PICO signal corresponding to each PICO signal includes: Determine the time-domain data carried by the probe reference signal SRS on each of the first PICO signals; Delayed samples are added to the time-domain data carried by the probe reference signal SRS on each of the first PICO signals to obtain the second PICO signal corresponding to each of the first PICO signals.

14. The hub unit (HUB) according to claim 13, characterized in that, Adding delayed samples to the time-domain data carried by the probe reference signal (SRS) on each of the first PICO signals to obtain the second PICO signal corresponding to each of the first PICO signals includes any one of the following: Add the target number of zeros before the cyclic prefix CP corresponding to the time-domain data carried by the probe reference signal SRS on each of the first PICO signals; or The target number of zeros are added to the tail of the OFDM symbol corresponding to the time-domain data carried by the probe reference signal SRS on each of the first PICO signals; Wherein, the target number is less than or equal to the length of the CP, and on any first PICO signal, the number of zeros added to the time-domain data of the same SRS carrier is different, while the number of zeros added to the time-domain data of different SRS carriers is the same.

15. The hub unit (HUB) according to claim 13 or 14, characterized in that, The step of obtaining the PICO signal to which the terminal belongs based on the third PICO signal includes: Send the third PICO signal to the baseband processing unit (BBU); The BBU receives the PICO signal to which the terminal belongs, determined based on the third PICO signal.

16. The hub unit (HUB) according to claim 15, characterized in that, The merging of the PICO signals belonging to the terminal includes: Obtain the resource configuration table from the BBU; Based on the resource configuration table, the PICO signals to which the terminal belongs are filtered; The PICO signals obtained after filtering are merged.

17. A baseband processing unit (BBU), comprising a memory, a transceiver, and a processor; characterized in that: 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: The system receives a third PICO signal sent by a hub unit (HUB). The third PICO signal is obtained by merging multiple second PICO signals. Any one of the multiple second PICO signals is obtained by delaying a first PICO signal corresponding to that second PICO signal. The first PICO signal is any one of the first PICO signals in the set of first PICO signals. Based on the distribution of the SRS signal path of the detection reference signal SRS on the third PICO signal, the mapping relationship between the first PICO signal and the SRS signal path is determined; based on the mapping relationship, the PICO signal to which the terminal belongs is determined. The PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set, and each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit (PicoRRU) connected to the hub unit (HUB); the mapping relationship is a mapping relationship determined by the relationship between each first SRS IRT value or second SRS IRT value and the number of delay samples corresponding to each first PICO signal when performing delay processing; the first SRS IRT value includes the first SRS IRT value corresponding to each SRS signal path determined based on the distribution of the SRS signal path; the second SRS IRT value includes the second SRS IRT value corresponding to each SRS signal path determined based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path. Send the PICO signal to which the terminal belongs to the HUB.

18. The baseband processing unit (BBU) according to claim 17, characterized in that, The process of determining the mapping relationship includes: Based on the distribution of the SRS signal paths, determine the first SRS IRT value corresponding to each of the SRS signal paths; The mapping relationship is determined based on the relationship between each of the first SRS IRT values ​​and the number of delay samples corresponding to each of the first PICO signals when they are subjected to delay processing.

19. The baseband processing unit (BBU) according to claim 17, characterized in that, The process of determining the mapping relationship includes: The DMRS IRT measurement value is determined, and based on the distribution of the SRS signal path, the first SRS IRT value corresponding to each SRS signal path is determined; Based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path, the second SRS IRT value corresponding to each SRS signal path is determined. The mapping relationship is determined based on the relationship between each of the second SRS IRT values ​​and the number of delay samples corresponding to each of the first PICO signals when they are subjected to delay processing.

20. The baseband processing unit (BBU) according to claim 19, characterized in that, The step of determining the second SRS IRT value corresponding to each SRS signal path based on the DMRS IRT measurement value and the first SRS IRT value corresponding to each SRS signal path includes: Based on the DMRS IRT measurement value and the first SRSIRT value corresponding to the target SRS signal path among all the SRS signal paths, determine the second SRS IRT value corresponding to the target SRS signal path; Determine the second SRS IRT value corresponding to each of the SRS signal paths.

21. The baseband processing unit (BBU) according to any one of claims 17-20, characterized in that, After determining the PICO signal to which the terminal belongs based on the third PICO signal, the operation further includes: Determine the time-domain resources corresponding to the PICO signal to which the terminal belongs; Based on the aforementioned time-domain resources, a resource configuration table is generated.

22. The baseband processing unit (BBU) according to claim 21, characterized in that, The operation also includes: Send the resource configuration table to the HUB.

23. A signal processing apparatus, characterized in that, Applications to hub units include: The first acquisition unit is used to perform delay processing on each first PICO signal in the first PICO signal set to acquire the second PICO signal corresponding to each first PICO signal. Each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit (PicoRRU) connected to the hub unit (HUB). The second acquisition unit is used to merge the second PICO signals corresponding to each of the first PICO signals to obtain the third PICO signal. The third acquisition unit is used to acquire the PICO signal to which the terminal belongs based on the third PICO signal, wherein the PICO signal to which the terminal belongs is one or more first PICO signals in the first PICO signal set; the PICO signal to which the terminal belongs is determined based on the mapping relationship between the first PICO signal and the SRS signal path; the SRS signal path is the SRS signal path of the detection reference signal SRS on the third PICO signal; the mapping relationship is a mapping relationship determined by the relationship between each first SRS IRT value or second SRS IRT value and the number of delay samples corresponding to each first PICO signal when performing delay processing; the first SRS IRT value includes the first SRS IRT value corresponding to each SRS signal path determined based on the distribution of the SRS signal path; the second SRS IRT value includes the second SRS IRT value corresponding to each SRS signal path determined based on the DMRSIRT measurement value and the first SRS IRT value corresponding to each SRS signal path. The merging unit is used to merge the PICO signals belonging to the terminal.

24. A signal processing apparatus, characterized in that, Applied to the baseband processing unit (BBU), including: The receiving unit is used to receive a third PICO signal sent by the hub unit HUB. The third PICO signal is obtained by merging multiple second PICO signals. Any one of the multiple second PICO signals is obtained by delaying a first PICO signal corresponding to the first PICO signal. The first PICO signal is any one of the first PICO signals in the set of first PICO signals. The determining unit is configured to determine the mapping relationship between the first PICO signal and the SRS signal path based on the distribution of the SRS signal path of the probe reference signal SRS on the third PICO signal; and to determine the PICO signal to which the terminal belongs based on the mapping relationship. The PICO signal to which the terminal belongs is one or more first PICO signals in all the first PICO signal sets, and each first PICO signal in the first PICO signal set comes from a different miniature remote radio unit (PicoRRU) connected to the hub unit (HUB). The mapping relationship is a relationship between each first SRS IRT value or second SRS IRT value and the number of delay samples corresponding to each first PICO signal when performing delay processing. The first SRS IRT value includes the first SRS IRT value corresponding to each SRS signal path determined based on the distribution of the SRS signal path; the second SRS IRT value includes the second SRS IRT value corresponding to each SRS signal path determined based on the DMRSIRT measurement value and the first SRS IRT value corresponding to each SRS signal path. The first transmitting unit is used to transmit the PICO signal to which the terminal belongs to the HUB.

25. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a computer program that causes the processor to perform the method according to any one of claims 1 to 5, or to perform the method according to any one of claims 6 to 11.

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