CN113411909B - Data processing method, device, system and storage medium - Google Patents

Abstract

The invention discloses a data processing method, equipment and a system for detecting physical random access signals, wherein the method comprises the following steps: receiving uplink physical channel data, wherein the uplink physical channel data comprises physical random access channel data and non-physical random access channel data; processing the non-physical random access channel data and the physical random access channel data according to the same preset mode; detecting the physical random access signal from the processed uplink physical channel data. The invention can realize the purposes of reducing the complexity of processing the random access signal at the side of the radio frequency processing unit or the extension unit and reducing the number of forward transmission interaction by executing the data processing flow of multiplexing the physical random access signal and the non-physical random access signal at the side of the radio frequency processing unit or the extension unit.

Description

Data processing method, device, system and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a data processing method, device, system, and storage medium for detecting a physical random access signal.

Background

For indoor coverage of wireless communications, distributed base stations are one of the most dominant deployment modalities today. The distributed base station has lower cost and high construction flexibility. The core of the initial distributed base station structure is to separate a conventional macro base station Baseband processing Unit (BBU) from a Radio frequency processing Unit (RRU), and connect the two units through an optical fiber. In network deployment, the BBU, the core network and the radio network control equipment are centralized in a machine room, and then are connected with the RRU deployed on a planning station through optical fibers to complete network coverage. Thereby reducing the construction cost and improving the efficiency. With the demands for increasing the communication range and reducing the construction cost, modules for forwarding and converging uplink and downlink data between the user and the base station are separated to form an Extended Unit (EU, also called rHuB).

There are many options for the functionality split of a distributed base station based on the third generation partnership project (3 GPP) protocols. The most widely accepted distributed base station consists of three parts: the first part is a host unit (BBU) which completes the modulation and demodulation of baseband signals, the second part is an extension unit (EU or rHuB) which forwards and merges uplink and downlink data, and the third part is a Remote Unit (RU) which receives and transmits uplink and downlink radio frequency signals.

Fig. 1 shows a schematic diagram of an access network protocol stack 100 of a distributed base station. The protocol stack 100 includes a physical layer (PHY layer), a medium access control layer (MAC layer), a logical control layer (RLC layer), a packet convergence protocol (PDCP), a service data adaptation layer (SDAP layer), and a radio resource control layer (RRC layer). Where SDAP is a newly added layer in the New air interface (NR) protocol, represented by the dashed box.

Three units in the distributed base station: the functional partitioning of BBU, rHuB (or EU), and RU (or RRU), as a general understanding, is generally considered to be achieved by dividing the Low-PHY function into RU or RRU or rHuB with High PHY (High-PHY) and Low PHY (Low-PHY) as the division points; the High-PHY function is realized by being divided into a DU (RAN Distributed Unit) or a BBU (base band Unit), and the connection between the DU/BBU and the RU/RRU/rHuB is called forwarding. Because the forwarding transmission is frequency domain data, the segmentation mode can reduce the data volume of the forwarding connection between the DU/BBU and the RU/RRU/rHuB, thereby reducing the network deployment cost.

Taking an uplink in wireless communication as an example, as shown in fig. 2, the Low-PHY function performed by the RU/RRU/rHuB includes analog beamforming, analog domain to digital domain conversion, cyclic prefix removal and fast fourier transform (fft), PRACH (Physical Random Access CHannel) processing, IQ data (I, in-phase, Q, quadrature, etc.); the DU/BBU completes High-PHY functions including IQ data decompression, resource demapping, channel estimation and detection, demodulation, descrambling and the like.

Among them, the random access procedure implemented using PRACH can be used in a cellular wireless communication system such as LTE (Long Term Evolution) and 5G/NR networks, so that a terminal (UE) initiates a connection with a base station. In such a random access procedure, the UE may select a random access preamble and transmit the preamble on the PRACH, that is, transmit a PRACH signal for the base station to perform PRACH signal detection, and then allocate a communication resource to the UE, for example, via a Physical Downlink Control Channel (PDCCH).

In the existing distributed base station, the processing of the PRACH by the RU/RRU/rHuB requires the cooperation of the DU/BBU and the RU/RRU/rHuB, and includes: 1) the DU/BBU sends parameters such as PRACH format, cyclic prefix length (CP length), fast Fourier transform point number (FFT point number), time slot and symbol where PRACH is located, frequency domain resource and the like to the RU/RRU/rHuB; 2) according to the parameters, the RU/RRU/rHuB performs functions of removing a Cyclic Prefix (CP), converting a time domain into a frequency domain, extracting PRACH frequency domain data and the like on the PRACH signal; 3) and the RU/RRU/rHuB transmits the PRACH frequency domain data to the DU/BBU after IQ compression or without IQ compression. The above operations require 2 interactions of DU/BBU and RU/RRU/rHuB, and at the same time, since PRACH subcarrier spacing may be different from other physical channels, and PRACH cyclic prefix length is different from other physical channels, modules such as cyclic prefix removal, fast fourier transform and the like need to be specially added for PRACH by RU/RRU/rHuB, and RU/RRU/rHuB needs to identify which time slots, symbols, frequency domain resources are PRACH, and which are non-PRACH, which increases the complexity of RU/RRU/rHuB side processing.

Therefore, in order to solve the problems of high complexity and many forward interaction times of the RU/RRU/rHuB side for PRACH signal processing, it is necessary to provide a PRACH signal processing scheme that reduces the complexity and the forward interaction times.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a data processing method, equipment, a system and a storage medium for detecting physical random access signals, and the aims of reducing the processing complexity of the RU/RRU/rHuB side on the PRACH signal and reducing the number of forward transmission interaction can be realized through the RU/RRU/rHuB processing flow of multiplexing non-PRACH channels by the PRACH.

To achieve the above object, an embodiment of the present invention provides a data processing method for detecting a physical random access signal, the method including: receiving uplink physical channel data, wherein the uplink physical channel data comprises physical random access channel data and non-physical random access channel data; processing the non-physical random access channel data and the physical random access channel data according to the same preset mode; detecting the physical random access signal from the processed uplink physical channel data.

An embodiment of the present invention further provides a data processing method for detecting a physical random access signal, where the method includes: receiving uplink physical channel data processed according to the same preset mode, wherein the uplink physical channel data comprises physical random access channel data and non-physical random access channel data; and detecting the physical random access signal from the processed uplink physical channel data.

An embodiment of the present invention further provides a data processing apparatus for detecting a physical random access signal, including: the data receiving unit is used for receiving uplink physical channel data processed according to the same preset mode, and the uplink physical channel data comprises physical random access channel data and non-physical random access channel data; and a data detection unit for detecting the physical random access signal from the processed uplink physical channel data.

An embodiment of the present invention further provides a data processing method for detecting a physical random access signal, where the method includes: receiving uplink physical channel data, wherein the uplink physical channel data comprises physical random access channel data and non-physical random access channel data; processing the non-physical random access channel data and the physical random access channel data according to the same preset mode; and sending the processed uplink physical channel data to a subsequent node to detect the physical random access signal.

An embodiment of the present invention further provides a data processing apparatus for detecting a physical random access signal, including: a receiving unit, configured to receive uplink physical channel data, where the uplink physical channel data includes physical random access channel data and non-physical random access channel data; the processing unit is used for processing the non-physical random access channel data and the physical random access channel data according to the same preset mode; and a transmitting unit for transmitting the processed uplink physical channel data to a subsequent node to detect the physical random access signal.

An embodiment of the present invention further provides a data processing system for detecting a physical random access signal, the system including: the first device is used for processing the received uplink physical channel data according to the same preset mode and sending the processed uplink physical channel data to the second device, wherein the uplink physical channel data comprises physical random access channel data and non-physical random access channel data; and second means for detecting the physical random access signal based on the received processed uplink physical channel data.

Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the data processing method for detecting a physical random access signal according to any of the above embodiments.

The invention has the advantages that the data processing method, the equipment, the system and the storage medium for detecting the physical random access signal can be realized, 1) the PRACH in RU/RRU/rHuB is processed by adopting a non-PRACH channel or signal processing mode so as to reduce the interaction overhead of partial forward transmission; 2) the RU/RRU/rHuB performs uniform processing on all the uplink data, such as cyclic prefix removal and fast Fourier transform, so as to reduce the cost of a large amount of hardware resources and software resources; 3) and adding auxiliary information such as a cyclic prefix field, a time domain data field after the cyclic prefix is removed, or a field containing cyclic prefix frequency domain data and the like in the forward signaling from the RU/RRU/rHuB to the DU/BBU for assisting the detection of the PRACH.

Drawings

The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.

Fig. 1 shows a schematic diagram of an access network protocol stack of a distributed base station.

Fig. 2 is a flowchart illustrating a method for processing PRACH signals and non-PRACH signals in uplink data processing of an existing distributed base station system.

Fig. 3 is a flowchart illustrating a data processing method for detecting a PRACH signal according to an embodiment of the present invention.

Fig. 4 to 7 respectively show schematic diagrams of specific exemplary data flows of the data processing method for detecting a PRACH signal according to an embodiment of the present invention.

Fig. 8 shows an exemplary schematic diagram of a time domain signal arrangement when PRACH and non-PRACH subcarrier spacing are the same.

Fig. 9 shows a schematic diagram of a recovery process for recovering time domain data of an original PRACH signal using time domain information including the PRACH signal after cyclic prefix removal.

Fig. 10 is a block diagram illustrating a data processing system for random access signals according to an embodiment of the present invention.

Fig. 11 shows a schematic structural diagram of a first data processing device for detecting a physical random access signal according to an embodiment of the present invention.

Fig. 12 is a schematic structural diagram of a second data processing device for detecting a physical random access signal according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first," "second," "third," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so described are interchangeable under appropriate circumstances. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover a non-exclusive inclusion. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware circuits or integrated circuits, or in different networks and/or processor means and/or micro-indicator means.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The present invention will be described in further detail with reference to the accompanying drawings and detailed description, in order to make the objects, features and advantages thereof more comprehensible.

Fig. 3 is a flowchart illustrating a data processing method for detecting a physical random access signal according to an embodiment of the present invention. It should be understood that the term "physical random access signal" as used in this embodiment refers to a PRACH signal, or physical random access channel data/signal. In the embodiment shown in fig. 3, in order to reduce the complexity and the number of forward transmission interactions of a radio frequency processing unit or an extension unit (RU/RRU/rHuB), the PRACH processing in the RU/RRU/rHuB may use a channel or signal processing method other than the PRACH. In addition, in the forward signaling from the RU/RRU/rHuB to the host unit or the distributed unit (BBU/DU), a cyclic prefix field, or a time domain data field after removing the cyclic prefix, or a field containing cyclic prefix frequency domain data is added to assist in PRACH signal detection on the BBU/DU side.

Specifically, the data processing method for detecting PRACH signals provided by the embodiment of the present invention shown in fig. 3 includes the following steps, in this embodiment, the RU/RRU/rHuB may perform step S10 and step S20, and the BBU/DU may perform step S30.

Step S10, receiving uplink physical channel data, where the uplink physical channel data includes physical random access channel data and non-physical random access channel data;

step S20, processing the non-physical random access channel data and the physical random access channel data according to the same preset mode;

step S30, detecting the physical random access signal from the processed uplink physical channel data.

Specifically, in step S10, the receiving the uplink physical channel data includes receiving time domain data of the physical random access channel and time domain data of the non-physical random access channel. The non-physical random access channel or signal includes a PUSCH (physical uplink shared channel), a PUCCH (physical uplink control channel), an SRS (sounding reference signal), and the like.

In step S20, the processing the non-physical random access channel data and the physical random access channel data according to the same preset manner includes: and performing a cyclic prefix removing operation on the received time domain data of the physical random access channel and the received time domain data of the non-physical random access channel according to a cyclic prefix removing operation mode aiming at the non-physical random access channel so as to obtain the time domain data of the uplink physical channel after the cyclic prefix removing operation. And then, performing a fourier transform operation on the time domain data of the uplink physical channel after the cyclic prefix removing operation to obtain frequency domain data of the uplink physical channel after the cyclic prefix removing operation.

The performing of the cyclic prefix removal operation on the uplink physical channel data according to the cyclic prefix removal operation manner for the non-physical random access channel may be configured to perform the cyclic prefix removal operation on all uplink physical channel data according to a preset cyclic prefix removal operation manner for the non-physical random access channel, where the non-physical random access channel and the physical random access channel have different data formats (different cyclic prefix arrangements) and different cyclic prefix lengths.

Optionally, after processing the non-physical random access channel data and the physical random access channel data according to the same preset manner, step S20 may further include obtaining auxiliary information associated with the time domain data of the uplink physical channel after the cyclic prefix removal operation, where the auxiliary information includes: a time domain cyclic prefix field at a first preset symbol position deleted by a cyclic prefix removal operation in the time domain data of the uplink physical channel; or a field containing cyclic prefix frequency domain data after performing frequency domain transformation on a time domain cyclic prefix field at a second preset symbol position where the time domain data of the uplink physical channel is deleted through cyclic prefix removing operation.

Wherein the time domain cyclic prefix field at the first preset symbol position comprises: a time domain cyclic prefix field at all symbol positions within a slot; or a time domain cyclic prefix field at least one symbol position specified by an apparatus for detecting the physical random access signal. The time domain cyclic prefix field at the second preset symbol position is set to: a time domain cyclic prefix field at least one symbol position specified by an apparatus for detecting the physical random access signal. In this embodiment, the apparatus for detecting the physical random access signal may be a BBU or a DU.

Optionally, after processing the non-physical random access channel data and the physical random access channel data according to the same preset manner to obtain time domain data of the uplink physical channel after the cyclic prefix removal operation, step S20 may further include: and performing a retention operation on a time domain data field of the time domain data of the uplink physical channel at a preset time domain position after the cyclic prefix removing operation is performed, so as to obtain the time domain data field of the physical random access channel at the preset time domain position. Wherein the time domain data field at the preset time domain position is set to: a time domain data field at least one symbol position specified by a device detecting the physical random access signal. In this embodiment, the apparatus for detecting the physical random access signal may be a BBU or a DU.

At step S30, the detecting the physical random access signal from the processed uplink physical channel data includes: extracting the frequency domain data of the physical random access channel subjected to the cyclic prefix removing operation according to a preset rule from the frequency domain data of the uplink physical channel subjected to the cyclic prefix removing operation, and detecting a physical random access signal based on the extracted frequency domain data.

Detecting the physical random access signal from the processed uplink physical channel data further comprises: and detecting the physical random access signal based on the received auxiliary information and the frequency domain data of the uplink physical channel after the operation of removing the cyclic prefix. Specifically, frequency domain data of the physical random access channel after the cyclic prefix removing operation is extracted from the frequency domain data of the uplink physical channel after the cyclic prefix removing operation according to a preset rule, time domain data of the physical random access channel is recovered according to the extracted frequency domain data of the physical random access channel after the cyclic prefix removing operation and the auxiliary information, and the physical random access signal is obtained from the recovered time domain data of the physical random access channel by detecting a random access preamble sequence.

In the case that the auxiliary information of the time domain cyclic prefix field at the first preset symbol position is obtained according to the step 20, recovering the time domain data of the physical random access channel according to the extracted frequency domain data of the physical random access channel after the cyclic prefix removing operation and the auxiliary information includes: and after performing inverse Fourier transform on the extracted frequency domain data of the physical random access channel subjected to the cyclic prefix removing operation to convert the frequency domain data into time domain data, supplementing a time domain cyclic prefix field at a first preset symbol position to a corresponding symbol position of the time domain data to recover the time domain data of the physical random access channel.

In the case that the acquired auxiliary information includes auxiliary information including a field of cyclic prefix frequency domain data according to the step 20, recovering the time domain data of the physical random access channel according to the extracted frequency domain data of the physical random access channel after the cyclic prefix removing operation and the auxiliary information includes: and after performing inverse Fourier transform on the extracted frequency domain data of the physical random access channel subjected to the cyclic prefix removing operation and the field containing the cyclic prefix frequency domain data to convert the frequency domain data into time domain data, restoring the time domain data of the physical random access channel by implementing time domain interpolation on the time domain data.

In the case that the time domain data field of the physical random access channel at the preset time domain position is obtained according to the step 20, detecting the physical random access channel data from the processed uplink physical channel data further includes: copying a field with the last length of each symbol being the cyclic prefix length of the non-physical random access channel data in the acquired time domain data field of the physical random access channel at the preset time domain position to the head of each symbol, thereby recovering the time domain data of the physical random access channel, and acquiring the physical random access signal from the recovered time domain data of the physical random access channel by detecting a random access preamble sequence.

In this embodiment, the extracting, according to the preset rule, the frequency domain data of the physical random access channel after the cyclic prefix removal operation includes determining whether there is a PRACH signal in the frequency domain data of the uplink physical channel after the cyclic prefix removal operation according to a frame number, a subframe number, and a slot number, and if it is determined that there is a PRACH signal, extracting the frequency domain data of the PRACH according to a time-frequency resource location mapped by the PRACH channel.

In this embodiment, the obtaining the physical random access signal from the recovered time domain data of the physical random access channel by detecting a random access preamble sequence may include the following time domain detection scheme of the physical random access signal: and after the restored time domain data of the physical random access channel is subjected to operations such as frequency spectrum shifting, filtering, fast Fourier transform and the like, correlation processing is carried out on the time domain data and each stored preamble sequence, the preamble sequence used by the terminal for sending the random access signal is determined according to the obtained correlation value and a preset detection threshold, and uplink access timing adjustment quantity is obtained, so that the detection of the random access signal is completed.

In this embodiment, the detecting the physical random access signal based on the extracted frequency domain data may include: and performing fast Fourier transform on the extracted frequency domain data to obtain time domain data, and performing a time domain detection scheme of the physical random access signal to detect the physical random access signal.

The data processing method for detecting the PRACH signal provided by the embodiment of the invention can realize that:

when the number of channels in the digital domain is increased and the supported bandwidth is increased, due to the limitation of RU/RRU/rHuB processing capability, the conventional PRACH signal processing method shown in the foregoing fig. 2 cannot support the above-mentioned high specification scenario, but the PRACH signal processing method provided by the embodiment of the present invention can still enable PRACH detection with high performance without losing the RU/RRU/rHuB processing specification.

When the current transmission does not support the interaction of certain parameters of the PRACH (such as the PRACH format), the conventional PRACH signal processing method as shown in fig. 2 cannot work, but the data processing method for PRACH signal detection provided by the embodiment of the present invention can enable the PRACH signal detection with high performance without depending on such a limitation.

Fig. 4 to fig. 7 respectively show schematic diagrams of specific exemplary data flows of the data processing method for detecting a PRACH signal according to an embodiment of the present invention.

Example one:

fig. 4 shows a schematic diagram of an exemplary data flow of a data processing method for transmitting only frequency domain data of all uplink physical channels or signals from the RU/RRU/rHuB to the DU/BBU via the fronthaul interface, and performing PRACH signal detection on the DU/BBU side.

As shown in fig. 4, the RU/RRU/rHuB side needs to perform processing on all uplink physical channels or signals (including physical random access channel data and non-physical random access channel data) in the same preset manner, where the same preset manner includes performing operations such as analog beamforming, analog domain to digital domain conversion, cyclic prefix removal, fast fourier transform, digital beamforming, IQ compression, and the like on all uplink physical channels or signals in a manner that channels are not distinguished, and sending frequency domain data of all processed uplink physical channels or signals to the DU/BBU side to transmit the frequency domain data of all uplink physical channels or signals. It should be understood that the analog domain to digital domain conversion, digital beamforming, IQ compression, etc. operations (represented by dashed boxes) shown in fig. 4 are optional, and in other embodiments, analog domain to digital domain conversion, digital beamforming, IQ compression, etc. operations may not be performed.

At the side of DU/BBU, it needs to distinguish PRACH channel and non-PRACH channel, and makes PRACH signal detection operation aiming at PRACH channel. The DU/BBU side determines whether PRACH signals exist in the frequency domain data of all the processed uplink physical channels or signals according to the frame number, the subframe number and the time slot number, and if the PRACH signals exist, the PRACH frequency domain data are extracted according to the time frequency resource position mapped by the PRACH channels; and extracting frequency domain data of the non-PRACH channel according to the time-frequency resource position of the non-PRACH channel. The operations of resource de-mapping, channel estimation equalization, demodulation descrambling, channel decoding and the like are performed on the frequency domain data of the non-PRACH.

In this embodiment, an exemplary operation of the DU/BBU side to detect the PRACH signal in the extracted PRACH frequency domain data includes: and performing inverse fast Fourier transform on the PRACH frequency domain data to obtain time domain data of the PRACH frequency domain data, performing correlation operation on the time domain data and a known preamble sequence after the operations of frequency spectrum shifting, filtering, fast Fourier transform and the like, determining the preamble sequence used by the terminal for sending the random access signal and acquiring an uplink access timing adjustment quantity, thereby completing the detection of the random access signal.

Fig. 8 shows an exemplary schematic diagram of a time domain signal arrangement with the same PRACH and non-PRACH subcarrier spacing. As shown in fig. 8, due to different time domain signal arrangement manners of the PRACH and the non-PRACH channels, a partial loss of PRACH time domain data may be caused by a cyclic prefix removal operation (for example, removing data corresponding to CPs 0 to CP 3) at the RU/RRU/rHuB side, so that there is a partial performance loss when detecting the PRACH signal at the DU/BBU side, but due to a time domain symbol repetition characteristic of the PRACH signal, the partial performance loss may be accepted, and particularly in a medium signal-to-noise ratio and high signal-to-noise ratio scenario, the DU/BBU side may still reliably detect the PRACH signal.

Example two:

fig. 5 shows a schematic diagram of an exemplary data flow of a data processing method for transmitting, from the RU/RRU/rHuB to the fronthaul interface of the DU/BBU, not only frequency domain data of all uplink physical channels or signals, but also time domain cyclic prefix fields at multiple symbol positions obtained at the RU/RRU/rHuB side. Different from the first example, in the second example, a time domain cyclic prefix field is added to the fronthaul signaling from RU/RRU/rHuB to DU/BBU to recover the time domain data of the PRACH signal on the side of the DU/BBU, thereby assisting the PRACH signal detection.

As shown in fig. 5, similar to the example one, the RU/RRU/rHuB side needs to perform processing on all uplink physical channels or signals (including physical random access channel data and non-physical random access channel data) in the same preset manner, where the same preset manner includes performing operations such as analog beamforming, analog domain to digital domain conversion, cyclic prefix removal, fast fourier transform, digital beamforming, IQ compression, and the like on all uplink physical channels or signals in a manner that does not distinguish channels, and sending the processed frequency domain data of all uplink physical channels or signals to the DU/BBU side to transmit the frequency domain data of all uplink physical channels or signals. It should be understood that the analog domain to digital domain conversion, digital beamforming, IQ compression, etc. operations (represented by dashed boxes) shown in fig. 5 are optional, and in other embodiments, analog domain to digital domain conversion, digital beamforming, IQ compression, etc. operations may not be performed.

At the side of DU/BBU, it needs to distinguish PRACH channel and non-PRACH channel, and makes PRACH signal detection operation aiming at PRACH channel. The DU/BBU side determines whether PRACH signals exist in the frequency domain data of all the processed uplink physical channels or signals according to the frame number, the subframe number and the time slot number, and if the PRACH signals exist, the PRACH frequency domain data are extracted according to the time frequency resource position mapped by the PRACH channels; and extracting frequency domain data of the non-PRACH channel according to the time-frequency resource position of the non-PRACH channel. The operations of resource de-mapping, channel estimation equalization, demodulation descrambling, channel decoding and the like are performed on the frequency domain data of the non-PRACH.

In this example, the RU/RRU/rHuB side further needs to obtain a time domain cyclic prefix field at least one symbol position after performing a cyclic prefix removal operation on all uplink physical channels or signals, and send the time domain cyclic prefix field at the at least one symbol position to the DU/BBU side. As described above, the cyclic prefix removal operation at the RU/RRU/rHuB side may cause partial loss of PRACH time domain data, and the purpose of transmitting the time domain cyclic prefix field is to recover the time domain information lost by the PRACH signal at the DU/BBU side, so as to enhance the PRACH signal detection performance. Referring to fig. 8 again, the non-PRACH time domain signals are arranged in the following manner: cyclic prefix 0 (cp 0), symbol 0 (symb 0), cyclic prefix 1 (cp 1), symbol 1 (symb 1), …; the arrangement mode of the time domain signals of the PRACH is as follows: cyclic prefix (cp _ PRACH), symbol 0 (symb 0), symbol 1 (symb 1), …. When the RU/RRU/rHuB side employs a cyclic prefix removal operation for a non-PRACH signal, part of the information of the PRACH signal is deleted. As shown in fig. 8, the data corresponding to CP 0-CP 3 is cyclic prefix and can be deleted for some non-PRACH signal, but for the PRACH channel, the data corresponding to CP 0-CP 3 is valid information for the PRACH, and if this part of information is directly deleted, the PRACH information is lost, for example, in the exemplary time domain signal of the PRACH channel shown in fig. 8, all three symbols symb0, symb2, and symb3 are deleted with part of information. Therefore, in the second example, the deleted time domain cyclic prefix field is sent to the DU/BBU side, which can ensure that the PRACH signal is not lost. The specific process comprises the following steps: before PRACH signal detection is carried out on the DU/BBU side, Fourier inversion is carried out on the extracted PRACH frequency domain data to obtain time domain data, and the deleted time domain cyclic prefix field is supplemented to the corresponding symbol position of the time domain data of the PRACH signal (namely, the time domain data of the PRACH corresponding to the cyclic prefixes CP 0-CP 3 in the graph 8 are recovered), so that the PRACH information is ensured not to be lost.

The symbol position corresponding to the time domain cyclic prefix information is transmitted in the following ways:

1. case of DU/BBU side scheduling not required: the RU/RRU/rHuB side transmits the cyclic prefixes on all the symbols in a time slot to the DU/BBU side; the DU/BBU side extracts the corresponding cyclic prefix information in one time slot according to the symbol number mapped in the time slot by the PRACH, and uses it to recover the time domain data of the PRACH signal, thereby performing the PRACH signal detection.

2. Case of DU/BBU side scheduling required: the symbol position corresponding to the cyclic prefix is specified by the DU/BBU side, namely the DU/BBU side determines the cyclic prefix of a plurality of symbols to be transmitted and the corresponding symbol number according to the current PRACH format; and after the DU/BBU receives the time domain cyclic prefix information sent by the RU/RRU/rHuB, recovering the time domain data of the PRACH signal according to the actual symbol position mapped by the PRACH, and further detecting the PRACH signal. At this time, the DU/BBU side is required to schedule the RU/RRU/rHuB side to send the time domain cyclic prefix information on which radio frames, subframes, time slots and symbols through forwarding.

It should be understood that, similar to the first example, the step of performing PRACH signal detection may include performing correlation on the time domain data of the recovered PRACH signal and a known preamble sequence, determining a preamble sequence used by a terminal that transmits the random access signal, and acquiring an uplink access timing adjustment amount, thereby completing detection of the random access signal.

Example three:

fig. 6 shows a schematic diagram of an exemplary data flow of a data processing method for transmitting, from the RU/RRU/rHuB to the fronthaul interface of the DU/BBU, not only frequency domain data of all uplink physical channels or signals, but also multi-symbol time domain data fields after the cyclic prefix is removed at the RU/RRU/rHuB side. Different from the foregoing first example and second example, in the third example, a multi-symbol time domain data field after removing a cyclic prefix is added to the fronthaul signaling from RU/RRU/rHuB to DU/BBU, so as to recover the time domain data of the PRACH signal on the side of the DU/BBU, thereby assisting PRACH signal detection.

As shown in fig. 6, similar to the example one, the RU/RRU/rHuB side needs to perform processing on all uplink physical channels or signals (including physical random access channel data and non-physical random access channel data) in the same preset manner, where the same preset manner includes performing operations such as analog beamforming, analog domain to digital domain conversion, cyclic prefix removal, fast fourier transform, digital beamforming, IQ compression, and the like on all uplink physical channels or signals in a manner that does not distinguish channels, and sending the processed frequency domain data of all uplink physical channels or signals to the DU/BBU side to transmit the frequency domain data of all uplink physical channels or signals. It should be understood that the analog domain to digital domain conversion, digital beamforming, IQ compression, etc. operations (represented by dashed boxes) shown in fig. 6 are optional, and in other embodiments, analog domain to digital domain conversion, digital beamforming, IQ compression, etc. operations may not be performed.

In this example, the RU/RRU/rHuB side further needs to obtain the multi-symbol time domain data field after removing the cyclic prefix after performing the cyclic prefix removal operation on all uplink physical channels or signals, and send the multi-symbol time domain data field after removing the cyclic prefix to the DU/BBU side. The purpose of transmitting the multi-symbol time domain data field (i.e., the PRACH-containing time domain information after the cyclic prefix is removed) after the cyclic prefix is removed in this example is to directly recover the time domain data of the PRACH signal on the DU/BBU side and perform PRACH time domain detection on the DU/BBU side. In contrast to the frequency domain information including the PRACH received by the DU/BBU side in example one and example two, in this example, the time domain information including the PRACH is received by the DU/BBU side. After receiving the time domain signal containing PRACH, the DU/BBU side can complete the deleted cyclic prefix part. Specifically, the operation of padding is as shown in fig. 9, after receiving the time domain signal containing PRACH, the DU/BBU side copies the sampling point with the last length of each symbol being the cyclic prefix length to the head of each symbol, thereby recovering the original PRACH time domain signal. Subsequently, the DU/BBU detects the PRACH signal using, for example, a conventional time domain detection scheme, which includes, in this embodiment: frequency domain shifting, filtering, fast fourier transform, sequence correlation, etc.

In this example, the DU/BBU side is required to schedule the multi-symbol time domain data field without the cyclic prefix on which radio frames, subframes, time slots, and symbols are sent by the RU/RRU/rHuB side through fronthaul, and if the RU/RRU/rHuB receives the scheduling information, the time domain data field without the cyclic prefix is reserved at the time domain position scheduled by the DU/BBU, and is sent to the DU/BBU through fronthaul.

Example four:

fig. 7 shows a schematic diagram of an exemplary data flow of a data processing method for transmitting not only frequency domain data of all uplink physical channels or signals but also a data field containing cyclic prefix frequency domain data from a RU/RRU/rHuB to a DU/BBU fronthaul interface. Different from the first example to the third example, in the fourth example, a cyclic prefix-containing frequency domain data field is added to the fronthaul signaling from the RU/RRU/rHuB to the DU/BBU to recover the time domain data of the PRACH signal on the side of the DU/BBU, thereby assisting the PRACH signal detection.

As shown in fig. 7, similar to the example one, the RU/RRU/rHuB side needs to perform processing on all uplink physical channels or signals (including physical random access channel data and non-physical random access channel data) in the same preset manner, where the same preset manner includes performing operations such as analog beamforming, analog domain to digital domain conversion, cyclic prefix removal, fast fourier transform, digital beamforming, IQ compression, and the like on all uplink physical channels or signals in a manner that does not distinguish channels, and sending the processed frequency domain data of all uplink physical channels or signals to the DU/BBU side to transmit the frequency domain data of all uplink physical channels or signals. It should be understood that the analog domain to digital domain conversion, digital beamforming, IQ compression, etc. operations (represented by dashed boxes) shown in fig. 7 are optional, and in other embodiments, analog domain to digital domain conversion, digital beamforming, IQ compression, etc. operations may not be performed.

At the side of DU/BBU, it needs to distinguish PRACH channel and non-PRACH channel, and makes PRACH signal detection operation aiming at PRACH channel. The DU/BBU side determines whether PRACH signals exist in the frequency domain data of all the processed uplink physical channels or signals according to the frame number, the subframe number and the time slot number, and if the PRACH signals exist, the PRACH frequency domain data are extracted according to the time frequency resource position mapped by the PRACH channels; and extracting frequency domain data of the non-PRACH channel according to the time-frequency resource position of the non-PRACH channel. The operations of resource de-mapping, channel estimation equalization, demodulation descrambling, channel decoding and the like are performed on the frequency domain data of the non-PRACH.

In this example, the RU/RRU/rHuB side further needs to obtain a field containing cyclic prefix frequency domain data after performing a cyclic prefix removal operation on all uplink physical channels or signals, and send the field containing cyclic prefix frequency domain data to the DU/BBU side. Since the data length of the time domain data containing the cyclic prefix is short, an M-point fast fourier transform operation can be performed on the time domain data containing the cyclic prefix on the RU/RRU/rHuB side, and the number of points of the M-point fast fourier transform is smaller than that of the fast fourier transform, for example, when the number of points of the fast fourier transform is 2048, the number of points of the M-point fast fourier transform is 256 or 512. An M-point fast fourier transform is used to convert time domain data containing a cyclic prefix into frequency domain data. And after the frequency domain data is sent to the DU/BBU through forward transmission, the DU/BBU completes PRACH detection by combining the frequency domain data containing the cyclic prefix with the extracted PRACH frequency domain data. The specific operation comprises the following steps: and performing inverse fast Fourier transform on the extracted PRACH frequency domain data, performing inverse fast Fourier transform on the frequency domain data containing the cyclic prefix, performing time domain interpolation on the time domain data subjected to inverse Fourier transform to form original PRACH time domain data, and detecting PRACH signals. The step of detecting the PRACH signal may include performing a correlation operation on the recovered PRACH time domain data and a known preamble sequence, determining a preamble sequence used by a terminal that sends the random access signal, and obtaining an uplink access timing adjustment amount, thereby completing detection of the random access signal.

In this example, the DU/BBU side is required to schedule RU/RRU/rHuB on which radio frames, subframes, time slots, and symbols to perform M-point fast fourier transform, and if the RU/RRU/rHuB receives the scheduling information, the RU/RRU/rHuB performs M-point fast fourier transform on the position where the DU/BBU is scheduled to obtain frequency domain data containing a cyclic prefix, and sends the frequency domain data to the DU by forward transmission.

Fig. 10 is a block diagram illustrating a data processing system 200 for random access signals according to an embodiment of the present invention. Specifically, the system 200 includes: the first device 10 processes the received uplink physical channel data according to the same preset mode and sends the processed uplink physical channel data to the second device, wherein the uplink physical channel data comprises physical random access channel data and non-physical random access channel data; and second means 20 for detecting said physical random access signal based on the received processed uplink physical channel data.

The first device 10 performs a cyclic prefix removal operation on the received time domain data of the physical random access channel and the received time domain data of the non-physical random access channel according to a cyclic prefix removal operation mode of the non-physical random access channel, so as to obtain the time domain data of the uplink physical channel after the cyclic prefix removal operation.

It should be understood that specific functions and implementations of the first device 10 and the second device 20 in the system 200 can refer to the foregoing embodiments of the data processing method for detecting a random access signal and the related descriptions of examples one to four corresponding to a radio frequency processing unit or an extended unit (RU/RRU/rHuB) and a host unit or a distributed unit (BBU/DU), respectively, and are not described herein again.

Fig. 11 shows a schematic structural diagram of a first data processing device 300 for detecting a physical random access signal according to an embodiment of the present invention. Specifically, the apparatus 300 includes: a receiving unit 310, configured to receive uplink physical channel data, where the uplink physical channel data includes physical random access channel data and non-physical random access channel data; a processing unit 320 configured to process the non-physical random access channel data and the physical random access channel data in the same preset manner, and a sending unit 330 configured to send the processed uplink physical channel data to a subsequent node to detect the physical random access signal.

The processing unit 320 is configured to: and executing the operation of removing the cyclic prefix on the received time domain data of the physical random access channel and the received time domain data of the non-physical random access channel according to the operation mode of removing the cyclic prefix of the non-physical random access channel so as to obtain the time domain data of the uplink physical channel after the operation of removing the cyclic prefix.

The sending unit 330 is configured to send the time domain data of the uplink physical channel after the cyclic prefix removal operation to a subsequent node that detects the physical random access signal.

The processing unit 320 is further configured to perform a fourier transform operation on the time domain data of the uplink physical channel after the cyclic prefix removing operation is performed, so as to obtain frequency domain data of the uplink physical channel after the cyclic prefix removing operation is performed; and the sending unit 330 is further configured to send the frequency domain data of the uplink physical channel after the cyclic prefix removal operation to a subsequent node that detects the physical random access signal.

The processing unit 320 is further configured to generate auxiliary information associated with the time domain data of the uplink physical channel after the cyclic prefix removing operation is performed after the time domain data of the uplink physical channel after the cyclic prefix removing operation is obtained; and the sending unit 330 is configured to send the assistance information to a subsequent node that detects the physical random access signal, so as to assist in detecting the physical random access signal.

For specific limitations and implementation manners of the units of the apparatus 300, reference may be made to the foregoing embodiments of the data processing method for detecting a physical random access signal and relevant descriptions corresponding to a radio frequency processing unit or an extension unit (RU/RRU/rHuB) in examples one to four, and details are not repeated herein.

Fig. 12 is a schematic structural diagram of a second data processing device 400 for detecting a physical random access signal according to an embodiment of the present invention. Specifically, the apparatus 400 includes: a data receiving unit 410, configured to receive uplink physical channel data processed according to the same preset manner, where the uplink physical channel data includes physical random access channel data and non-physical random access channel data; and a data detection unit 420 for detecting the physical random access signal from the processed uplink physical channel data.

The data receiving unit 410 is further configured to: receiving side information associated with the time domain data of the uplink physical channel after the cyclic prefix removal operation.

The data detection unit 420 is further configured to: and detecting the physical random access signal according to the received frequency domain data and time domain data of the uplink physical channel after the operation of removing the cyclic prefix, or the frequency domain data and the auxiliary information.

For specific limitations and implementation manners of the units of the apparatus 400, reference may be made to the foregoing embodiments of the data processing method for detecting a physical random access signal and relevant descriptions corresponding to a host unit or a distributed unit (BBU/DU) in examples one to four, which are not described herein again.

In another embodiment, a computer readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, implements the data processing method for detecting a physical random access signal as any of the previous described.

For specific limitations and implementation of the above steps, reference may be made to the above embodiments and examples one to four of the data processing method for detecting a physical random access signal, which are not described herein again.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

The data processing method, device, system and storage medium for detecting physical random access signals provided by the embodiments of the present invention are described in detail above, and a specific example is applied in the text to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understanding the technical scheme and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (29)

1. A data processing method for detecting a physical random access signal, the method comprising:

receiving uplink physical channel data, wherein the uplink physical channel data comprises physical random access channel data and non-physical random access channel data;

processing the non-physical random access channel data and the physical random access channel data according to the same preset mode;

detecting the physical random access signal from the processed uplink physical channel data;

wherein the processing the non-physical random access channel data and the physical random access channel data in the same preset manner includes: and performing a cyclic prefix removing operation on the received time domain data of the physical random access channel and the received time domain data of the non-physical random access channel according to a cyclic prefix removing operation mode aiming at the non-physical random access channel so as to obtain the time domain data of the uplink physical channel after the cyclic prefix removing operation.

2. The data processing method for detecting a physical random access signal of claim 1, wherein the receiving the uplink physical channel data comprises receiving time domain data of a physical random access channel and time domain data of a non-physical random access channel.

3. The data processing method for detecting a physical random access signal of claim 2, wherein the processing the non-physical random access channel data and the physical random access channel data in the same predetermined manner further comprises:

performing a fourier transform operation on the time domain data of the uplink physical channel after the cyclic prefix removing operation to obtain frequency domain data of the uplink physical channel after the cyclic prefix removing operation.

4. The data processing method for detecting a physical random access signal as claimed in claim 3, wherein said detecting the physical random access signal from the processed uplink physical channel data comprises:

extracting the frequency domain data of the physical random access channel subjected to the cyclic prefix removing operation according to a preset rule from the frequency domain data of the uplink physical channel subjected to the cyclic prefix removing operation, and detecting a physical random access signal based on the extracted frequency domain data.

5. The data processing method for detecting a physical random access signal of claim 4, wherein prior to detecting the physical random access signal from the processed uplink physical channel data, further comprising: acquiring auxiliary information associated with the time domain data of the uplink physical channel after the cyclic prefix removing operation, wherein the auxiliary information comprises:

a time domain cyclic prefix field at a first preset symbol position deleted by a cyclic prefix removal operation in the time domain data of the uplink physical channel; or

And the field containing the cyclic prefix frequency domain data is obtained by carrying out frequency domain transformation on the time domain cyclic prefix field at the second preset symbol position where the time domain data of the uplink physical channel is deleted through the cyclic prefix removing operation.

6. The data processing method for detecting a physical random access signal of claim 5, wherein the time domain cyclic prefix field at the first preset symbol position comprises:

a time domain cyclic prefix field at all symbol positions within a slot; or

A time domain cyclic prefix field at least one symbol position specified by an apparatus for detecting the physical random access signal.

7. The data processing method for detecting a physical random access signal of claim 5, wherein detecting the physical random access signal from the processed uplink physical channel data further comprises:

and detecting the physical random access signal based on the received auxiliary information and the frequency domain data of the uplink physical channel after the operation of removing the cyclic prefix.

8. The data processing method for detecting a physical random access signal according to claim 7, wherein detecting the physical random access signal according to the received auxiliary information and the frequency domain data of the uplink physical channel after the operation of removing the cyclic prefix further comprises:

extracting the frequency domain data of the physical random access channel after the operation of removing the cyclic prefix from the frequency domain data of the uplink physical channel after the operation of removing the cyclic prefix according to a preset rule, recovering the time domain data of the physical random access channel according to the extracted frequency domain data of the physical random access channel after the operation of removing the cyclic prefix and the auxiliary information, and acquiring the physical random access signal from the recovered time domain data of the physical random access channel by detecting a random access preamble sequence.

9. The data processing method of claim 8, wherein in case that the auxiliary information includes a time domain cyclic prefix field at a first preset symbol position, recovering the time domain data of the physical random access channel according to the extracted frequency domain data of the physical random access channel after the cyclic prefix removal operation and the auxiliary information comprises:

and after performing inverse Fourier transform on the extracted frequency domain data of the physical random access channel subjected to the cyclic prefix removing operation to convert the frequency domain data into time domain data, supplementing a time domain cyclic prefix field at a first preset symbol position to a corresponding symbol position of the time domain data to recover the time domain data of the physical random access channel.

10. The data processing method for detecting a physical random access signal as claimed in claim 8, wherein in case that the auxiliary information includes a field containing cyclic prefix frequency domain data, recovering the time domain data of the physical random access channel according to the extracted frequency domain data of the physical random access channel after the cyclic prefix removal operation and the auxiliary information comprises:

and after performing inverse Fourier transform on the extracted frequency domain data of the physical random access channel subjected to the cyclic prefix removing operation and the field containing the cyclic prefix frequency domain data to convert the frequency domain data into time domain data, restoring the time domain data of the physical random access channel by implementing time domain interpolation on the time domain data.

11. The data processing method for detecting a physical random access signal of claim 2, wherein processing the non-physical random access channel data and the physical random access channel data in a same preset manner further comprises:

performing a retention operation on a time domain data field of the time domain data of the uplink physical channel at a preset time domain position after the cyclic prefix removing operation is performed, so as to obtain the time domain data field of the physical random access channel at the preset time domain position; and

detecting the physical random access channel data from the processed uplink physical channel data further comprises:

copying a field with the last length of each symbol being the cyclic prefix length of the non-physical random access channel data in the acquired time domain data field of the physical random access channel at the preset time domain position to the head of each symbol, thereby recovering the time domain data of the physical random access channel, and acquiring the physical random access signal from the recovered time domain data of the physical random access channel by detecting a random access preamble sequence.

12. A data processing method for detecting a physical random access signal, the method comprising:

receiving uplink physical channel data processed according to the same preset mode, wherein the uplink physical channel data comprises physical random access channel data and non-physical random access channel data; and

detecting the physical random access signal from the processed uplink physical channel data;

wherein, receiving the uplink physical channel data processed according to the same preset mode comprises: and receiving the frequency domain data or the time domain data of the uplink physical channel, which is obtained after the cyclic prefix removing operation is carried out on the time domain data of the physical random access channel and the time domain data of the non-physical random access channel according to the cyclic prefix removing operation mode of the non-physical random access channel.

13. The data processing method for detecting a physical random access signal of claim 12, wherein the method further comprises: receiving side information associated with the time domain data of the uplink physical channel after the cyclic prefix removal operation.

14. The data processing method for detecting a physical random access signal of claim 13, wherein detecting the physical random access signal from the processed uplink physical channel data further comprises:

and detecting the physical random access signal according to the received frequency domain data and time domain data of the uplink physical channel after the operation of removing the cyclic prefix, or the frequency domain data and the auxiliary information.

15. A data processing apparatus for detecting a physical random access signal, the apparatus comprising:

the data receiving unit is used for receiving uplink physical channel data processed according to the same preset mode, and the uplink physical channel data comprises physical random access channel data and non-physical random access channel data; wherein, the receiving, by the data receiving unit, the uplink physical channel data processed according to the same preset mode includes: receiving frequency domain data or time domain data of an uplink physical channel after the operation of removing the cyclic prefix is carried out on the time domain data of the physical random access channel and the time domain data of the non-physical random access channel according to the operation mode of removing the cyclic prefix of the non-physical random access channel; and

and the data detection unit is used for detecting the physical random access signal from the processed uplink physical channel data.

16. The data processing device for detecting a physical random access signal of claim 15, wherein the data receiving unit is further to: receiving side information associated with the time domain data of the uplink physical channel after the cyclic prefix removal operation.

17. The data processing device for detecting a physical random access signal of claim 16, wherein the data detection unit is to: and detecting the physical random access signal according to the received frequency domain data and time domain data of the uplink physical channel after the operation of removing the cyclic prefix, or the frequency domain data and the auxiliary information.

18. A data processing method for detecting a physical random access signal, the method comprising:

receiving uplink physical channel data, wherein the uplink physical channel data comprises physical random access channel data and non-physical random access channel data;

processing the non-physical random access channel data and the physical random access channel data according to the same preset mode; and

sending the processed uplink physical channel data to a subsequent node to detect the physical random access signal;

wherein the processing the non-physical random access channel data and the physical random access channel data in the same preset manner includes: and executing the operation of removing the cyclic prefix on the received time domain data of the physical random access channel and the received time domain data of the non-physical random access channel according to the operation mode of removing the cyclic prefix of the non-physical random access channel so as to obtain the time domain data of the uplink physical channel after the operation of removing the cyclic prefix.

19. The data processing method for detecting a physical random access signal of claim 18, wherein the time domain data of the uplink physical channel after the cyclic prefix removal operation is transmitted to a subsequent node detecting the physical random access signal.

20. The data processing method for detecting a physical random access signal according to claim 18, wherein a fourier transform operation is performed on the time domain data of the uplink physical channel after the cyclic prefix removal operation to obtain frequency domain data of the uplink physical channel after the cyclic prefix removal operation, and the frequency domain data of the uplink physical channel after the cyclic prefix removal operation is transmitted to a subsequent node that detects the physical random access signal.

21. The data processing method for detecting a physical random access signal according to claim 20, wherein after obtaining the time domain data of the uplink physical channel after the cyclic prefix removal operation, the auxiliary information associated with the time domain data of the uplink physical channel after the cyclic prefix removal operation is obtained and sent to a subsequent node for detecting the physical random access signal, so as to assist detection of the physical random access signal.

22. A data processing apparatus for detecting a physical random access signal, the apparatus comprising:

a receiving unit, configured to receive uplink physical channel data, where the uplink physical channel data includes physical random access channel data and non-physical random access channel data;

a processing unit, configured to process the non-physical random access channel data and the physical random access channel data in a same preset manner, where the processing unit processes the non-physical random access channel data and the physical random access channel data in the same preset manner includes: according to a cyclic prefix removing operation mode of a non-physical random access channel, performing cyclic prefix removing operation on the received time domain data of the physical random access channel and the received time domain data of the non-physical random access channel to obtain time domain data of the uplink physical channel after the cyclic prefix removing operation; and

a sending unit, configured to send the processed uplink physical channel data to a subsequent node to detect the physical random access signal.

23. The data processing device for detecting a physical random access signal according to claim 22, wherein the sending unit is configured to send the time domain data of the uplink physical channel after the cyclic prefix removing operation to a subsequent node that detects the physical random access signal.

24. The data processing device for detecting a physical random access signal of claim 22, wherein the processing unit is configured to perform a fourier transform operation on the time domain data of the uplink physical channel after the cyclic prefix removal operation to obtain frequency domain data of the uplink physical channel after the cyclic prefix removal operation; and

the sending unit is configured to send the frequency domain data of the uplink physical channel after the cyclic prefix removal operation to a subsequent node that detects the physical random access signal.

25. The data processing device for detecting a physical random access signal of claim 24, wherein the processing unit is configured to generate the side information associated with the time domain data of the uplink physical channel after the cyclic prefix removing operation after obtaining the time domain data of the uplink physical channel after the cyclic prefix removing operation; and

the sending unit is configured to send the auxiliary information to a subsequent node that detects the physical random access signal, so as to assist in detecting the physical random access signal.

26. A data processing system for detecting a physical random access signal, the system comprising:

the first device is used for processing the received uplink physical channel data according to the same preset mode and sending the processed uplink physical channel data to the second device, wherein the uplink physical channel data comprises physical random access channel data and non-physical random access channel data, and the processing of the received uplink physical channel data according to the same preset mode by the first device comprises the following steps: according to a cyclic prefix removing operation mode of a non-physical random access channel, performing cyclic prefix removing operation on the received time domain data of the physical random access channel and the received time domain data of the non-physical random access channel to obtain time domain data of the uplink physical channel after the cyclic prefix removing operation; and

second means for detecting the physical random access signal based on the received processed uplink physical channel data.

27. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, implements a data processing method for detecting a physical random access signal according to any one of claims 1 to 11.

28. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, implements the data processing method for detecting a physical random access signal according to any one of claims 12 to 14.

29. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, implements a data processing method for detecting a physical random access signal according to any one of claims 18 to 21.

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